JP7403102B2 - Dust collector and nozzle unit - Google Patents

Description

The present disclosure relates to a dust collector and a nozzle unit. More specifically, the present disclosure relates to a dust collector and a nozzle unit that includes a nozzle having an inlet for collecting dust.

Patent Document 1 discloses a collector (dust collector). The collector disclosed in Patent Document 1 includes a drive unit and a dust unit. The dust unit includes a dust case, a filter unit, and a sieve section. The dust case includes a dust collecting section formed in a hollow, substantially rectangular parallelepiped shape, and a nozzle integrally formed on the front surface of the dust collecting section.

JP 2019-80854 Publication

In a collector (dust collector) as disclosed in Patent Document 1, various types of nozzles, such as brushed nozzles and brushless nozzles, are generally attached and detached and replaced depending on the application. However, such replacement by attaching and detaching the nozzle is troublesome, and there is a possibility that the nozzle that is not in use may be lost.

An object of the present invention is to provide a dust collector and a nozzle unit that can use different types of nozzles without having to attach or detach the nozzles.

A dust collector according to one aspect of the present disclosure is a dust collector that includes a nozzle portion, generates suction air that sucks dust, and sucks dust through the nozzle portion. The nozzle portion includes a first nozzle and a second nozzle having front end portions having different shapes. The second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle. The first position and the second position differ in the positional relationship between the front end of the first nozzle and the front end of the second nozzle. The first nozzle is inside the second nozzle. The first nozzle has a first locking portion on an outer surface. The second nozzle has a second locking portion on the inner surface. The first locking portion and the second locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. The first nozzle and the second nozzle further include a protrusion that restricts rotation of the second nozzle about the axis of the first nozzle.
A dust collector according to one aspect of the present disclosure is a dust collector that includes a nozzle portion, generates suction air that sucks dust, and sucks dust through the nozzle portion. The nozzle portion includes a first nozzle and a second nozzle having front end portions having different shapes. The second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle. The first position and the second position differ in the positional relationship between the front end of the first nozzle and the front end of the second nozzle. The second nozzle has a brush portion at its front end. The first nozzle does not have a brush portion at the front end. The first nozzle is inside the second nozzle. The first nozzle has a first locking portion on an outer surface. The second nozzle has a second locking portion on the inner surface. The first locking portion and the second locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. The second nozzle has a first wall extending along the axis of the second nozzle, and a second wall on the opposite side of the first wall with respect to the axis of the second nozzle. The second nozzle is supported by the first nozzle at the first wall so as to be swingable between a reference position and a tilted position around a swing axis that intersects with the axis of the first nozzle. . The reference position is a position where the axes of the first nozzle and the second nozzle are parallel. The tilted position is a position where the axes of the first nozzle and the second nozzle intersect. The second locking portion is located on the second wall of the second nozzle. The first nozzle has a first auxiliary locking portion on an outer surface. The second nozzle has a second auxiliary locking portion on the inner surface. The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. do. The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. do not. The second nozzle has a pair of side walls connecting the first wall and the second wall. The second auxiliary locking portion is located on at least one of the pair of side wall portions of the second nozzle.

A nozzle unit according to one aspect of the present disclosure is a nozzle unit used in a dust collector. The dust collector includes a main body unit that has a suction port at a front end and generates suction air that sucks in dust to suck the dust through the suction port. The nozzle unit is attached to the front end of the main unit. The nozzle unit includes a first nozzle and a second nozzle having front end portions having different shapes. The second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle. The first position and the second position differ in the positional relationship between the front end of the first nozzle and the front end of the second nozzle.The first nozzle is inside the second nozzle. The first nozzle has a first locking portion on an outer surface. The second nozzle has a second locking portion on the inner surface. The first locking portion and the second locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. The first nozzle and the second nozzle further include a protrusion that restricts rotation of the second nozzle about the axis of the first nozzle.
A nozzle unit according to one aspect of the present disclosure is a nozzle unit used in a dust collector. The dust collector includes a main body unit that has a suction port at a front end and generates suction air that sucks in dust to suck the dust through the suction port. The nozzle unit is attached to the front end of the main unit. The nozzle unit includes a first nozzle and a second nozzle having front end portions having different shapes. The second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle. The first position and the second position differ in the positional relationship between the front end of the first nozzle and the front end of the second nozzle. The second nozzle has a brush portion at its front end. The first nozzle does not have a brush portion at the front end. The first nozzle is inside the second nozzle. The first nozzle has a first locking portion on an outer surface. The second nozzle has a second locking portion on the inner surface. The first locking portion and the second locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. The second nozzle has a first wall extending along the axis of the second nozzle, and a second wall on the opposite side of the first wall with respect to the axis of the second nozzle. The second nozzle is supported by the first nozzle at the first wall so as to be swingable between a reference position and a tilted position around a swing axis that intersects with the axis of the first nozzle. . The reference position is a position where the axes of the first nozzle and the second nozzle are parallel. The tilted position is a position where the axes of the first nozzle and the second nozzle intersect. The second locking portion is located on the second wall of the second nozzle. The first nozzle has a first auxiliary locking portion on an outer surface. The second nozzle has a second auxiliary locking portion on the inner surface. The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. do. The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. do not. The second nozzle has a pair of side walls connecting the first wall and the second wall. The second auxiliary locking portion is located on at least one of the pair of side wall portions of the second nozzle.

According to the aspect of the present disclosure, there is an effect that different types of nozzles can be used without attaching or detaching the nozzles.

FIG. 1 is a perspective view of a dust collector according to an embodiment of the present disclosure. FIG. 2 is an exploded perspective view of essential parts of the dust collector. FIG. 3 is an explanatory diagram of the operation of the nozzle unit of the dust collector. FIG. 4 is a sectional view of the nozzle unit in a first state. FIG. 5 is a sectional view of the nozzle unit in a second state. FIG. 6 is a sectional view of the nozzle unit in a third state. FIG. 7 is a sectional view of the nozzle unit in a fourth state. FIG. 8 is an exploded perspective view of the nozzle unit. FIG. 9 is another exploded perspective view of the nozzle unit. FIG. 10 is a bottom view of the second nozzle of the nozzle unit. FIG. 11 is a front view of the second nozzle. FIG. 12 is a bottom view of the first nozzle of the nozzle unit. FIG. 13 is another cross-sectional view of the nozzle unit in the first state. FIG. 14 is another cross-sectional view of the nozzle unit in the fourth state.

Embodiments of the present disclosure will be described below, with reference to the drawings as the case may be. However, the following embodiments are examples for explaining the present disclosure, and are not intended to limit the present disclosure to the following contents. The positional relationships such as top, bottom, left and right are based on the positional relationships shown in the drawings unless otherwise specified. Each figure described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component in each figure does not necessarily reflect the actual size ratio. . Further, the dimensional ratio of each element is not limited to the ratio shown in the drawings.

In the present disclosure, a dust collector (collector) is used to suck dust. That is, the dust collector is used for cleaning purposes. The dust collector is a handy type device. That is, the dust collector is designed to have a size and weight that allows the user to carry it around with one hand and use it for cleaning. Dust collectors are used to collect dust such as chips and debris that are generated when cutting or drilling materials such as wood or concrete during construction or renovation work of facilities such as houses, or during factory processes. used for suction.

(1) Embodiment (1-1) Overview FIGS. 1 and 2 show a dust collector 10 of this embodiment. The dust collector 10 has a nozzle section 30 and generates a suction wind that sucks the dust to suck the dust through the nozzle section 30 . As shown in FIG. 3, the nozzle portion 30 includes a first nozzle 40 and a second nozzle 50 having front end portions 41a and 51a having different shapes. As shown in FIGS. 3 to 7, the second nozzle 50 is located at a first position (the position of the second nozzle 50 in the nozzle sections 30A and 30B in FIG. 3) and a second position along the axis A40 of the first nozzle 40. ((the position of the second nozzle 50 in the nozzle sections 30C and 30D in FIG. 3)). The first position and the second position differ in the positional relationship between the front end 41a of the first nozzle 40 and the front end 51a of the second nozzle 50.

In the dust collector 10 of this embodiment, the nozzle section 30 includes a first nozzle 40 and a second nozzle 50 having front end portions 41a and 51a having different shapes. In the nozzle section 30, by moving the second nozzle 50 with respect to the first nozzle 40 between the first position and the second position, the front end 41a of the first nozzle 40 and the front end 51a of the second nozzle 50 are moved. The positional relationship can be made different. Therefore, according to this embodiment, different types of nozzles can be used without attaching or detaching the nozzles. Therefore, the usability of the dust collector 10 is improved.

(1-2) Details The dust collector 10 will be described in more detail below with reference to the drawings. The dust collector 10 includes a main body unit 20, a nozzle section 30, and a dust box 60.

As shown in FIG. 2, the main unit 20 has a suction port 210 at the front end portion 21, and generates suction air that sucks in dust to suck the dust through the suction port 210. As shown in FIG. 1, the main unit 20 includes a suction section 22, a filter section 23, a dust box attachment section 24, a separation section 25, a battery pack attachment section 26, and a grip 27.

As shown in FIG. 3, the front end portion 21 has a cylindrical shape and has an opening that serves as an inlet 210. As shown in FIG. The front end portion 21 has a pair of protrusions 211 on its outer peripheral surface.

The suction section 22 generates suction air. Suction section 22 includes a motor and a fan. The motor rotates the fan, which generates suction air that sucks in the debris.

The filter section 23 includes one or more filters that capture dust in the suction air. For example, one or more filters trap objects (eg, gypsum powder) with a diameter larger than a predetermined size (on the order of 15 to 45 μm) and allow air to pass through.

The dust box attachment part 24 is a part to which the dust box 60 is attached. The dust box attachment part 24 has an opening 240 and a pair of recesses 241 formed at the edge of the opening 240. The dust box 60 is a box for collecting dust. The dust box 60 is made of, for example, a light-transmitting material. Examples of the light-transmitting material include acrylic resin. The dust box 60 has a cylindrical shape with a bottom. More specifically, the dust box 60 has a cylindrical shape with a bottom. The dust box 60 has a bottom wall 61, a cylindrical peripheral wall 62 protruding from the outer edge of the bottom wall 61, and a pair of protrusions 621 formed on the outer edge of the peripheral wall 62. The dust box 60 is attached to the dust box attachment section 24 by fitting the pair of protrusions 621 into the pair of recesses 241 of the dust box attachment section 24 .

The separation unit 25 separates the dust sucked by the suction wind from the suction wind and accumulates it in the dust box 60. In the present embodiment, the separation unit 25 generates a vortex in the suction air, and extracts dust from the suction air using centrifugal force and accumulates it in the dust box 60 . Such a separation section 25 is also called a cyclone section (vortex generating unit).

The battery pack attachment part 26 is a part to which the battery pack 70 is attached. The battery pack attachment section 26 includes a mechanical connection section for mechanically connecting the battery pack 70 and a connector electrically connected to a terminal of the battery pack 70. The mechanical connection portion and the battery pack 70 are mechanically connected, for example, by fitting the recesses and recesses. The battery pack 70 is a rechargeable battery pack. The battery pack 70 includes an assembled battery configured by connecting a plurality of secondary batteries (for example, lithium ion batteries) in series, and a battery pack case that houses the assembled battery. The battery pack 70 supplies electric power for driving the suction unit 22 to (the motor of) the suction unit 22 . The battery pack 70 is not a component of the dust collector 10. However, the dust collector 10 may include a battery pack 70.

The grip 27 is a hand for the user to grip the main unit 20. The grip 27 has an arcuate shape. The grip 27 is provided at the rear of the main unit 20.

The main body unit 20 described above may have a conventionally well-known structure, so detailed explanation will be omitted.

The nozzle portion 30 is attached to the front end portion 21 of the main unit 20. The nozzle portion 30 constitutes a flow path of suction air connected to the suction port 210 of the front end portion 21 of the main unit 20 . In this embodiment, the nozzle portion 30 is attached to the front end portion 21 of the main body unit 20 by press fitting.

The nozzle section 30 includes a first nozzle 40 and a second nozzle 50, as shown in FIGS. 8 and 9. The first nozzle 40 and the second nozzle 50 have front end portions 41a and 51a of different shapes. In this embodiment, the first nozzle 40 does not have a brush portion. The first nozzle 40 is a so-called brushless nozzle. The second nozzle 50 has a brush portion 520. The second nozzle 50 is a so-called brushed nozzle. In the nozzle section 30, it is possible to select which of the first nozzle 40 and the second nozzle 50 to use depending on the purpose. According to this aspect, different types of nozzles can be used without attaching or detaching the nozzles.

The first nozzle 40 is attached to the front end portion 21 of the main unit 20. The first nozzle 40 is cylindrical. In this embodiment, the first nozzle 40 has a cylindrical shape. As shown in FIGS. 8, 9, and 12, the first nozzle 40 includes a main body portion 41, a pair of support portions 42, a first locking portion 43, a pair of first auxiliary locking portions 44, A pair of first regulating portions 45 and a pair of holes 46 are provided.

The main body portion 41 is the main body of the first nozzle 40 and defines the overall shape of the first nozzle 40 . The main body portion 41 has a cylindrical shape and has an axis A40 (see FIG. 3). In particular, the main body portion 41 has a cylindrical front end side. Axis A40 is the central axis. The axis A40 is along the front-rear direction of the main body portion 41. The axis A40 is also the length axis of the main body portion 41. The main body portion 41 has a front end portion 41a and a rear end portion 41b. The front end portion 41a and the rear end portion 41b are both ends of the main body portion 41 in the axis A40 direction. The front end part 41a and the rear end part 41b define the front end part and the rear end part of the first nozzle 40. The main body portion 41 has a front end opening 410 and a rear end opening 411 at a front end 41a and a rear end 41b, respectively. The rear end opening 411 has a size that allows the front end portion 21 of the main body unit 20 to be press-fitted into the main body portion 41 . The front end surface of the front end portion 41a is flat, and is not perpendicular to the axis A40 but is inclined.

The pair of support portions 42 are provided on the outer surface of the main body portion 41 (that is, on the outer surface of the first nozzle 40). The pair of support parts 42 are arranged at intervals along the direction of the axis A40. The pair of support parts 42 are located closer to the rear end 41b than the front end 41a. Thereby, a space is formed between the first nozzle 40 and the second nozzle 50 on the front end 41a side of the first nozzle 40. In this embodiment, the pair of support parts 42 are rectangular protrusions extending along the axis A40. As will be described in detail later, the pair of support parts 42 move the second nozzle 50 between the reference position and the tilted position around a swing axis that intersects (orthogonally in this embodiment) the axis A40 of the first nozzle 40. It is supported so that it can swing between the two. The reference position is a position where the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 are parallel, as shown by symbols 30A and 30D in FIG. The tilted position is a position where the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 intersect, as indicated by symbols 30B and 30C in FIG. In this embodiment, the front one of the pair of support parts 42 swingably supports the second nozzle 50.

The first locking portion 43 is a locking portion that positions the second nozzle 50 at the first position or the second position in the direction along the axis A40 of the first nozzle 40 together with a second locking portion 53 of the second nozzle 50, which will be described later. Configure a stop mechanism. As will be described in detail later, the first position and the second position differ in the positional relationship between the front end 41a of the first nozzle 40 and the front end 41a of the second nozzle 50. The first locking portion 43 is provided on the outer surface of the main body portion 41 (that is, the outer surface of the first nozzle 40). In this embodiment, the first locking portion 43 is located on the opposite side of the pair of support portions 42 with respect to the axis A40. The first locking portion 43 has a pair of recesses 431 and 432 into which a second locking portion 53, which will be described later, is fitted. The pair of recesses 431 and 432 are spaced apart from each other along the direction of the axis A40. The pair of recesses 431 and 432 are located closer to the front end 41a than the rear end 41b. More specifically, in the main body portion 41, the pair of recesses 431 and 432 are located closer to the front end portion 41a than the pair of support portions 42 are. The recess 432 is located closer to the front end 41a than the recess 431 is.

The pair of first auxiliary locking parts 44 together with a second auxiliary locking part 54 of the second nozzle 50, which will be described later, move the second nozzle 50 to a first position or a second position in the direction along the axis A40 of the first nozzle 40. A locking mechanism for positioning is configured. The pair of first auxiliary locking portions 44 are provided on the outer surface of the main body portion 41 (that is, on the outer surface of the first nozzle 40). In the present embodiment, the pair of first auxiliary locking parts 44 are arranged in the main body in the direction in which the pair of support parts 42 and the first locking part 43 face each other and in the direction orthogonal to each of the axis A40 (the left-right direction in FIG. 12). It is located on both sides of the section 41. The pair of first auxiliary locking parts 44 are located on the opposite side of the axis A40 from the pair of supporting parts 42. The pair of first auxiliary locking parts 44 are located closer to the rear end 41b than the front end 41a. The first auxiliary locking portion 44 includes a pair of recesses 441 and 442 into which the second auxiliary locking portion 54 fits, and a guide groove 443 in which the second auxiliary locking portion 54 slides between the pair of recesses 441 and 442. including. The pair of recesses 441 and 442 are lined up along the axis A40 of the first nozzle 40 (spaced apart). At least a portion of the pair of recesses 441 and 442 extends from the guide groove 443 to the side opposite to the pair of support parts 42 . The recess 442 is located closer to the front end 41a than the recess 441 is. The guide groove 443 is shallower than the pair of recesses 441 and 442.

The pair of first regulating parts 45 together with a pair of second regulating parts 55 of the second nozzle 50 (described later) constitute a regulating mechanism that regulates the movement of the second nozzle 50 around the swing axis by the pair of supporting parts 42. . The pair of first regulating portions 45 hold the second nozzle 50 at the reference position. The pair of first regulating portions 45 are provided on the outer surface of the main body portion 41 (that is, on the outer surface of the first nozzle 40). In the present embodiment, the pair of first restricting parts 45 are connected to the main body part 45 in the direction in which the pair of support parts 42 and the first locking part 43 face each other and in the direction orthogonal to each axis A40 (left-right direction in FIG. 12). on both sides.

The pair of holes 46 are used for positioning the first nozzle 40 with respect to the main unit 20. In the present embodiment, the pair of holes 46 are formed on both sides of the main body 41 in the direction in which the pair of support parts 42 and the first locking part 43 face each other, and in the direction perpendicular to the axis A40 (left-right direction in FIG. 12). It is in. When the front end 21 of the main body unit 20 is press-fitted into the main body 41 from the rear end opening 411 of the main body 41, the pair of projections 211 of the front end 21 of the main body unit 20 fit into the pair of holes 46, respectively. As a result, the first nozzle 40 is positioned with respect to the main unit 20. Therefore, rotation of the first nozzle 40 relative to the main unit 20 can be stopped.

The first nozzle 40 has insulation properties. The first nozzle 40 is made of an insulating resin material. The first nozzle 40 is a molded product made of an insulating resin material. In this embodiment, the main body portion 41, the pair of support portions 42, and the pair of first restriction portions 45 are formed continuously and integrally.

The second nozzle 50 is attached to the first nozzle 40. In particular, the second nozzle 50 is attached to the first nozzle 40 so as to be relatively movable between a first position and a second position along the axis A40 of the first nozzle 40, as shown in FIG. . The second nozzle 50 is cylindrical. In this embodiment, the second nozzle 50 has a cylindrical shape. As shown in FIG. 8, FIG. 9, FIG. 10, and FIG. portion 54, a pair of second restriction portions 55, a pair of contact portions 56, and a pair of index portions 571, 572. The second nozzle 50 includes a brush portion 520. The brush portion 520 may be made of artificial hair (synthetic fiber) or natural hair. Note that for the sake of simplification of illustration, illustration of the brush portion 520 is omitted in FIGS. 3, 10, 11, 13, and 14.

The main body portion 51 is the main body of the second nozzle 50 and defines the overall shape of the second nozzle 50. The main body portion 51 is cylindrical and has an axis A50 (see FIG. 3). In particular, the body portion 51 is generally cylindrical. The main body portion 51 is large enough to accommodate the first nozzle 40 therein. In this embodiment, the inner diameter of the main body 51 is larger than the outer diameter of the main body 41 of the first nozzle 40 . Axis A50 is the central axis. The axis A50 is along the front-rear direction of the main body portion 51. The axis A50 is also the length axis of the main body portion 51. The main body portion 51 has a front end portion 51a and a rear end portion 51b. The front end portion 51a and the rear end portion 51b are both ends of the main body portion 51 in the axis A50 direction. The front end part 51a and the rear end part 51b define the front end part and the rear end part of the second nozzle 50. The main body portion 51 has a front end opening 510 and a rear end opening 511 at a front end portion 51a and a rear end portion 51b, respectively. The rear end opening 511 is large enough to allow the front end 41 a of the first nozzle 40 to be inserted into the main body 51 of the second nozzle 50 . A brush portion 520 is attached to the front end surface of the front end portion 51a. The second nozzle 50 has a brush portion 520 at the front end portion 51a. Therefore, unlike the front end 41a of the first nozzle 40, the front end 51a of the second nozzle 50 has a shape to which the brush part 520 can be attached. The front end surface of the front end portion 51a is not perpendicular to the axis A50 but is inclined. The main body portion 51 has a bottom opening 512 connected to a rear end opening 511.

The main body portion 51 is divided into a first wall portion 513, a pair of side wall portions 514, and a second wall portion 515. The first wall portion 513 extends along the axis A50 of the second nozzle 50. The second wall portion 515 is located on the opposite side of the first wall portion 513 with respect to the axis A50 of the second nozzle 50. In this embodiment, the first wall portion 513 is a wall portion on the front side of the second nozzle 50, and the second wall portion 515 is a wall portion on the back side of the second nozzle 50. A pair of side walls 514 connects the first wall 513 and the second wall 515. More specifically, the pair of side walls 514 connect both ends of the first wall 513 in the width direction and both ends of the second wall 515 in the width direction (see FIG. 11). Therefore, the pair of side wall portions 514 are located on both sides in the direction in which the first wall portion 513 and the second wall portion 515 face each other and in the direction perpendicular to the axis A50 (the left-right direction in FIG. 11). As shown in FIG. 10, the second wall portion 515 constitutes a part of the front end portion 51a and defines the front end opening 510. A rear end opening 511 is formed closer to the rear end portion 51b than the second wall portion 515. Therefore, on the rear end portion 51b side of the main body portion 51, the pair of side wall portions 514 can be deformed so as to separate from each other.

The pair of rotation regulating protrusions 52 are provided on the inner surface of the main body portion 51 (that is, on the inner surface of the second nozzle 50), as shown in FIGS. 9 to 11. A pair of rotation regulating protrusions 52 are located on the first wall portion 513. The pair of rotation regulating protrusions 52 are arranged in a direction in which the first wall portion 513 and the second wall portion 515 face each other and in a direction perpendicular to each axis A50 (left-right direction in FIG. 11). The pair of rotation regulating protrusions 52 restricts the rotation of the second nozzle 50 relative to the first nozzle 40 by sandwiching the pair of support parts 42 of the first nozzle 40 from both sides (see FIGS. 4 and 7).

The second locking part 53 is a locking mechanism that positions the second nozzle 50 at the first position or the second position in the direction along the axis A40 of the first nozzle 40 together with the first locking part 43 of the first nozzle 40. Configure. The first locking part 43 and the second locking part 53 are arranged when the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 are parallel in the first position and the second position (reference position). , combine with each other. The first locking part 43 and the second locking part 53 are arranged when the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 intersect in the first position and the second position (tilted position). , do not combine with each other. That is, by moving the second nozzle 50 from the reference position to the tilted position, the lock by the locking mechanism can be released. The second locking portion 53 is provided on the inner surface of the main body portion 51 (that is, the inner surface of the second nozzle 50). In this embodiment, the second locking portion 53 is located on the opposite side of the first wall portion 513 with respect to the axis A50. The second locking portion 53 is closer to the front end 51a than the rear end 51b. The second locking portion 53 is located on the second wall portion 515. The second locking portion 53 is a protrusion. The second locking portion 53 is sized to fit into the pair of recesses 431 and 432 of the first locking portion 43 .

The pair of second auxiliary locking parts 54 together with the pair of first auxiliary locking parts 44 of the first nozzle 40 move the second nozzle 50 to the first position or the second position in the direction along the axis A40 of the first nozzle 40. It constitutes an auxiliary locking mechanism for positioning. The first auxiliary locking portion 44 and the second auxiliary locking portion 54 are arranged when the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 are parallel in the first position and the second position (reference position ), combine with each other. The first auxiliary locking portion 44 and the second auxiliary locking portion 54 are arranged when the axes A40 and A50 of the first nozzle 40 and the second nozzle 50 intersect in the first position and the second position (tilted position ), do not combine with each other. That is, by moving the second nozzle 50 from the reference position to the tilted position, it is possible to release the lock by the auxiliary locking mechanism. The pair of second auxiliary locking portions 54 are provided on the inner surface of the main body portion 51 (that is, on the inner surface of the second nozzle 50). In the present embodiment, the pair of second auxiliary locking parts 54 are attached to the main body in the direction in which the first wall part 513 and the second wall part 515 face each other and in the direction perpendicular to the axis A50 (left-right direction in FIG. 11). 51 on both sides. The pair of second auxiliary locking portions 54 are located on the opposite side of the first wall portion 513 with respect to the axis A50. The pair of second auxiliary locking portions 54 are provided on each of the pair of side wall portions 514. The pair of second auxiliary locking parts 54 are located closer to the rear end 51b than the front end 51a. Each of the pair of second auxiliary locking portions 54 is a projection. The second auxiliary locking portion 54 is sized to fit into the pair of recesses 441 and 442 of the first auxiliary locking portion 44 .

The pair of second regulating parts 55 together with the pair of first regulating parts 45 of the first nozzle 40 constitute a regulating mechanism that regulates the movement of the second nozzle 50 around the swing axis by the pair of supporting parts 42 . The pair of second regulating portions 55 hold the second nozzle 50 at the reference position. In the present embodiment, the pair of second restricting parts 55 are arranged in the main body part 51 in the direction in which the first wall part 513 and the second wall part 515 face each other and in the direction perpendicular to the axis A50 (the left-right direction in FIG. 11). On both sides. The pair of second restricting portions 55 are located on the opposite side of the first wall portion 513 with respect to the axis A50. The pair of second restricting portions 55 are provided on each of the pair of side wall portions 514 .

The pair of contact portions 56 restrict movement of the second nozzle 50 around the swing axis. The pair of contact parts 56 hold the second nozzle 50 at the reference position. In the present embodiment, the pair of contact parts 56 are provided on both sides of the main body part 51 in the direction in which the first wall part 513 and the second wall part 515 face each other and in the direction orthogonal to the axis A50 (left-right direction in FIG. 11). It is in. The pair of contact portions 56 are on the same side as the first wall portion 513 with respect to the axis A50. The pair of abutting portions 56 are provided on each of the pair of side wall portions 514.

A pair of indicator portions 571 and 572 indicate a pressing position when moving the second nozzle 50 relative to the first nozzle 40. More specifically, the pair of indicator portions 571 and 572 indicate the location where the second nozzle 50 is pressed in order to move the second nozzle 50 from the reference position to the tilted position. The pair of index portions 571 and 572 are provided on the outer surface of the main body portion 51 (that is, on the outer surface of the second nozzle 50). A pair of indicator portions 571 and 572 are located on the first wall portion 513. A pair of index parts 571 and 572 are lined up at intervals along the direction of axis A50. The pair of index parts 571 and 572 are located closer to the front end 51a than the rear end 51b. The pair of index portions 571 and 572 are located closer to the front end portion 51a than the rotation regulating protrusion 52. The index portion 571 is located closer to the front end portion 51a than the index portion 572 is. The indicator portion 571 has a triangular shape pointing to the front end portion 51a of the main body portion 51. The indicator portion 572 has a triangular shape pointing to the rear end portion 51b of the main body portion 51. A pressing part 573 between the pair of index parts 571 and 572 in the main body part 51 is a place where the second nozzle 50 is pressed.

The second nozzle 50 has insulation properties. The second nozzle 50 is made of an insulating resin material. The second nozzle 50 is a molded product made of an insulating resin material. The second nozzle 50 is formed such that at least a pair of side wall portions 514 have elasticity. In this embodiment, a main body portion 51, a pair of rotation regulating protrusions 52, a second locking portion 53, a pair of second auxiliary locking portions 54, a pair of second restricting portions 55, and a pair of abutting portions are provided. The portion 56 and the pair of index portions 571, 572 are formed continuously and integrally.

In the nozzle section 30, the first nozzle 40 is arranged inside the second nozzle 50. For example, the first nozzle 40 is housed in the second nozzle 50 through the rear end opening 511 of the second nozzle 50 from the front end 41a. Here, the pair of support parts 42 of the first nozzle 40 contact the inner surface of the first wall part 513 of the second nozzle 50. The pair of support parts 42 of the first nozzle 40 are sandwiched between the pair of rotation regulating protrusions 52 of the second nozzle 50. As described above, the pair of support parts 42 are located closer to the rear end 41b than the front end 41a. Thereby, a space is formed between the first nozzle 40 and the second nozzle 50 on the front end 41a side of the first nozzle 40. Therefore, the second nozzle 50 is attached to the first nozzle 40 (a pair of supporting parts 42) at the first wall part 513 at a reference position and a tilted position around a swing axis that intersects the axis A40 of the first nozzle 40. (See Fig. 3).

In the nozzle section 30, the second nozzle 50 is relatively movable between a first position and a second position along the axis A40 of the first nozzle 40 (see FIG. 3). The first position and the second position differ in the positional relationship between the front end 41a of the first nozzle 40 and the front end 41a of the second nozzle 50.

The first position is a position where the first nozzle 40 can be used. The first position is a position where the front end 41a of the first nozzle 40 is in front of the front end 51a of the second nozzle 50, as shown in FIG. Note that in the first position, it is not essential that the front end portion 41a of the first nozzle 40 be located in front of the tip of the brush portion 520. In other words, even if the tip of the brush portion 520 protrudes somewhat in front of the front end portion 51a, there is no problem in using the first nozzle 40. In the first position, the first nozzle 40 is available. In the first position, the second locking portion 53 is in a position where it can fit into the recess 431 of the first locking portion 43 . In the first position, the second auxiliary locking portion 54 is in a position where it can fit into the recess 441 of the first auxiliary locking portion 44 . In the first position, if the second nozzle 50 is at the reference position, the second locking part 53 fits into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 441 of. That is, the first locking portion 43 and the second locking portion 53 are coupled to each other, and the first auxiliary locking portion 44 and the second auxiliary locking portion 54 are coupled to each other. Thereby, the second nozzle 50 is positioned at the first position. On the other hand, if the second nozzle 50 is in the tilted position at the first position, the second locking part 53 does not fit into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 It does not fit into the recess 441 of the locking part 44. That is, the first locking part 43 and the second locking part 53 do not connect with each other, and the first auxiliary locking part 44 and the second auxiliary locking part 54 do not connect with each other. This allows the second nozzle 50 to move along the axis A40 of the first nozzle 40.

In the second position, the second nozzle 50 can be used. The second position is a position where the front end 51a of the second nozzle 50 is in front of the front end 41a of the first nozzle 40, as shown in FIG. That is, the second position is a position where the second nozzle 50 is moved from the first position to the front side with respect to the first nozzle 40 along the axis A40. In the second position, the second locking part 53 is in a position where it can fit into the recess 432 of the first locking part 43. In the second position, the second auxiliary locking portion 54 is in a position where it can fit into the recess 442 of the first auxiliary locking portion 44 . In the second position, if the second nozzle 50 is at the reference position, the second locking part 53 fits into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 442 of. That is, the first locking portion 43 and the second locking portion 53 are coupled to each other, and the first auxiliary locking portion 44 and the second auxiliary locking portion 54 are coupled to each other. Thereby, the second nozzle 50 is positioned at the first position. On the other hand, if the second nozzle 50 is in the tilted position at the second position, the second locking part 53 does not fit into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 It does not fit into the recess 442 of the locking part 44. That is, the first locking part 43 and the second locking part 53 do not connect with each other, and the first auxiliary locking part 44 and the second auxiliary locking part 54 do not connect with each other. This allows the second nozzle 50 to move along the axis A40 of the first nozzle 40.

(1-3) Operation of Nozzle Unit The operation for changing the nozzle used in the nozzle unit 30 will be described below with reference to FIGS. 3 to 7, 13, and 14. In FIGS. 3 to 7, the nozzle portions 30 are given different symbols 30A to 30D depending on the positional relationship between the first nozzle 40 and the second nozzle 50. In the nozzle section 30A shown in the upper left of FIG. 3 and in FIG. 4, the second nozzle 50 is at the first position and the reference position (first state). In the nozzle section 30B shown in the upper right of FIG. 3 and in FIG. 5, the second nozzle 50 is in the first position and the tilted position (second state). In the nozzle section 30C shown in the lower left of FIG. 3 and in FIG. 6, the second nozzle 50 is in the second and tilted position (third state). In the nozzle section 30D shown in the lower right of FIG. 3 and in FIG. 7, the second nozzle 50 is at the second and reference position (fourth state).

(1-3-1) Movement from the first position to the second position First, movement from the first position to the second position will be explained. Initially, the nozzle section 30 is assumed to be in the first state (30A). The second nozzle 50 is in the first and reference position. In the first state (30A), the second nozzle 50 is at the reference position, so the second locking part 53 fits into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 441 of the stopper 44 (see FIGS. 3 and 4). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is restricted, and the second nozzle 50 is positioned at the first position. Therefore, in order to move the second nozzle 50 from the first position to the second position, the second nozzle 50 is first moved from the reference position to the tilted position. For example, the user presses the pressing part 573 using the pair of index parts 571 and 572 of the second nozzle 50 as landmarks, so that the front side of the first wall part 513 of the second nozzle 50 approaches the first nozzle 40. , the second nozzle 50 is tilted with respect to the first nozzle 40 such that the rear side of the first wall portion 513 of the second nozzle 50 is separated from the first nozzle 40 . As a result, the second wall portion 515 of the second nozzle 50 separates from the first nozzle 40 , so the second locking portion 53 on the second wall portion 515 comes out of the recess 431 of the first locking portion 43 . Moreover, the first nozzle 40 tends to come out from the rear end opening 511 of the second nozzle 50 relatively. Therefore, the pair of side wall portions 514 are deformed by the first nozzle 40 so as to be separated from each other. As a result, the second auxiliary locking portion 54 comes out of the recess 441 of the first auxiliary locking portion 44 and moves into the guide groove 443. In this way, the nozzle section 30 enters the second state (30B). In the second state (30B), the second locking part 53 is not fitted into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 is not fitted into the recess 441 of the first auxiliary locking part 44. (See Figures 3 and 5). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is possible.

After this, the second nozzle 50 is moved forward while remaining in the tilted position to the second position. As a result, the nozzle section 30 enters the third state (30C). Here, the second locking part 53 does not fit into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 does not fit into the recess 442 of the first auxiliary locking part 44 (Fig. and Figure 6). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 remains possible. Therefore, the second nozzle 50 is moved from the tilted position to the reference position. In this embodiment, the pair of side wall portions 514 have elasticity and are deformed away from each other by the first nozzle 40 in the tilted position. Therefore, in the tilted position, the pair of side wall portions 514 generates a restoring force that tends to return to the original shape (that is, the shape at the reference position). Therefore, when the user stops pressing the pressing portion 573, this return force pushes the first nozzle 40 back inside the second nozzle 50 so that it does not come out from the rear end opening 511 of the second nozzle 50. At this time, either the pair of second restriction parts 55 of the second nozzle 50 contact the pair of first restriction parts 45 of the first nozzle 40, or the main body part 41 of the first nozzle 40 hits the pair of contact parts of the second nozzle 50. 56, the movement of the second nozzle 50 is restricted and the second nozzle 50 is positioned at the reference position (see FIG. 7). In other words, the second nozzle 50 can be correctly returned to the reference position even by using the return force of the pair of side walls 514. In this way, the second nozzle 50 returns from the tilted position to the reference position. As a result, the nozzle section 30 enters the fourth state (30D). In the fourth state (30D), since the second nozzle 50 is at the reference position, the second locking part 53 fits into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 442 of the stop 44 (see FIGS. 3 and 7). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is restricted, and the second nozzle 50 is positioned at the second position.

In this way, the second nozzle 50 moves as shown by arrows F11, F12, and F13 in FIG. 3, and the nozzle section 30 transitions from the first state (30A) to the fourth state (30D). In the fourth state, the second nozzle 50 is at the second and reference position. Therefore, the second nozzle 50 can be used. Further, the second nozzle 50 is positioned at a second position relative to the first nozzle 40 by a locking mechanism and an auxiliary locking mechanism.

(1-3-2) Movement from the second position to the first position Next, movement from the second position to the first position will be explained. Initially, the nozzle section 30 is assumed to be in the fourth state (30D). The second nozzle 50 is in the second and reference position. In the fourth state (30D), since the second nozzle 50 is at the reference position, the second locking part 53 fits into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 442 of the stop 44 (see FIGS. 3 and 7). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is restricted, and the second nozzle 50 is positioned at the second position. Therefore, in order to move the second nozzle 50 from the second position to the first position, the second nozzle 50 is first moved from the reference position to the tilted position. For example, the user presses the pressing part 573 using the pair of index parts 571 and 572 of the second nozzle 50 as landmarks, so that the front side of the first wall part 513 of the second nozzle 50 approaches the first nozzle 40. , the second nozzle 50 is tilted with respect to the first nozzle 40 such that the rear side of the first wall portion 513 of the second nozzle 50 is separated from the first nozzle 40 . As a result, the second wall portion 515 of the second nozzle 50 separates from the first nozzle 40 , so the second locking portion 53 on the second wall portion 515 comes out of the recess 432 of the first locking portion 43 . Moreover, the first nozzle 40 tends to come out from the rear end opening 511 of the second nozzle 50 relatively. Therefore, the pair of side wall portions 514 are deformed by the first nozzle 40 so as to be separated from each other. As a result, the second auxiliary locking portion 54 comes out of the recess 442 of the first auxiliary locking portion 44 and moves into the guide groove 443. In this way, the nozzle section 30 enters the third state (30C). In the third state (30C), the second locking part 53 is not fitted into the recess 432 of the first locking part 43, and the second auxiliary locking part 54 is not fitted into the recess 442 of the first auxiliary locking part 44. (See Figures 3 and 6). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is possible.

After this, the second nozzle 50 is moved rearward while remaining in the tilted position, and is moved to the first position. As a result, the nozzle section 30 enters the second state (30B). Here, the second locking part 53 does not fit into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 does not fit into the recess 441 of the first auxiliary locking part 44 (Fig. and Figure 5). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 remains possible. Therefore, the second nozzle 50 is moved from the tilted position to the reference position. In this embodiment, the pair of side wall portions 514 have elasticity and are deformed away from each other by the first nozzle 40 in the tilted position. Therefore, in the tilted position, the pair of side wall portions 514 generates a restoring force that tends to return to the original shape (that is, the shape at the reference position). Therefore, when the user stops pressing the pressing portion 573, this return force pushes the first nozzle 40 back inside the second nozzle 50 so that it does not come out from the rear end opening 511 of the second nozzle 50. At this time, either the pair of second restriction parts 55 of the second nozzle 50 contact the pair of first restriction parts 45 of the first nozzle 40, or the main body part 41 of the first nozzle 40 hits the pair of contact parts of the second nozzle 50. 56, the movement of the second nozzle 50 is restricted and the second nozzle 50 is positioned at the reference position (see FIG. 4). In other words, the second nozzle 50 can be correctly returned to the reference position even by using the return force of the pair of side walls 514. In this way, the second nozzle 50 returns from the tilted position to the reference position. As a result, the nozzle section 30 enters the first state (30A). In the first state (30A), the second nozzle 50 is at the reference position, so the second locking part 53 fits into the recess 431 of the first locking part 43, and the second auxiliary locking part 54 fits into the first auxiliary locking part 43. It fits into the recess 441 of the stopper 44 (see FIGS. 3 and 4). Therefore, movement of the second nozzle 50 along the axis A40 of the first nozzle 40 is restricted, and the second nozzle 50 is positioned at the first position.

In this way, the second nozzle 50 moves as shown by arrows F21, F22, and F23 in FIG. 3, and the nozzle section 30 transitions from the fourth state (30D) to the first state (30A). In the first state, the second nozzle 50 is at the first and reference position. Therefore, the first nozzle 40 can be used. Further, the second nozzle 50 is positioned at the first position with respect to the first nozzle 40 by a locking mechanism and an auxiliary locking mechanism.

As described above, in the dust collector 10 of this embodiment, the second nozzle 50 is simply moved relative to the first nozzle 40 along the axis A40 of the first nozzle 40 in the nozzle section 30, and then used. Nozzles can be selected. Therefore, according to the dust collector 10 of this embodiment, different types of nozzles can be used without having to attach or detach the nozzles. Therefore, the usability of the dust collector 10 is improved. In particular, simply by tilting the second nozzle 50 with respect to the first nozzle 40, the positioning of the second nozzle 50 at the first or second position can be released.

(2) Modifications Embodiments of the present disclosure are not limited to the above embodiments. The embodiments described above can be modified in various ways depending on the design, etc., as long as the objects of the present disclosure can be achieved. Modifications of the above embodiment are listed below. The modified examples described below can be applied in combination as appropriate.

In one variation, the shapes of the first nozzle 40 and the second nozzle 50 may be different from the embodiments described above. For example, the main body portion 41 of the first nozzle 40 and the main body portion 51 of the second nozzle 50 may not be cylindrical but may have a rectangular tube shape with a polygonal cross section. The first nozzle 40 and the second nozzle 50 may be partially or entirely made of metal instead of an insulating resin material. The second nozzle 50 may be located inside the first nozzle 40. The second nozzle 50 may be attached to the main unit 20, and the first nozzle 40 may be movable relative to the second nozzle 50.

In a modification, the nozzle section 30 may be continuously and integrally provided in the main body unit 20. More specifically, the first nozzle 40 of the nozzle section 30 may be provided continuously and integrally with the main body unit 20. That is, it is not essential that the nozzle portion 30 be separable from the main unit 20.

In one variation, the first nozzle 40 may be a brushed nozzle. In this case, if the first nozzle 40 and the second nozzle 50 differ in at least one of the purpose, length, hardness, thinness, and material of the brush, the first nozzle 40 and the second nozzle 50 have different shapes. It can be said that it has front end portions 41a and 51a. The second nozzle 50 may be a brushless nozzle. In this case, if the first nozzle 40 and the second nozzle 50 differ in at least one of the nozzle purpose, length, hardness, thinness, and material, the first nozzle 40 and the second nozzle 50 have different shapes. It can be said that it has front end portions 41a and 51a.

In a modified example, the first position may be a position where the front end portion 41a of the first nozzle 40 is in front of the tip of the brush portion 520. The second position may be a position where the front end 41 a of the first nozzle 40 is in front of the front end 51 a of the second nozzle 50 but is behind the tip of the brush part 520 . In short, the second position may be any position where the second nozzle 50 can be used.

In a modified example, the number of supporting parts 42 in the first nozzle 40 may be one instead of two, or may be three or more. The first nozzle 40 does not need to have the support part 42. The second nozzle 50 may have a similar structure to the support part 42.

In a modified example, in the second nozzle 50, the number of rotation regulating protrusions 52 may be one instead of two, or may be three or more. The second nozzle 50 does not need to have the rotation regulating protrusion 52. The first nozzle 40 may have the same structure as the rotation regulating protrusion 52.

In a modified example, the number of the first locking portions 43 and the second locking portions 53 may be one instead of two, or may be three or more. The locking mechanism (first locking part 43 and second locking part 53) is not essential. The first locking portion 43 may be a protrusion, and the second locking portion 53 may have a recess.

In a modified example, the number of the first auxiliary locking portions 44 and the second auxiliary locking portions 54 may be one instead of two, or may be three or more. The auxiliary locking mechanism (first auxiliary locking part 44 and second auxiliary locking part 54) is not essential. The first auxiliary locking portion 44 may be a protrusion, and the second auxiliary locking portion 54 may have a recess. In the above embodiment, they are called the first auxiliary locking part 44 and the second auxiliary locking part 54, but "auxiliary" here has no technical meaning and simply refers to the first auxiliary locking part 43 and the second auxiliary locking part 54. It is merely a label for distinguishing the name from the second locking portion 53.

In a modified example, in the first nozzle 40, the number of first regulating portions 45 may be one instead of two, or may be three or more. In the second nozzle 50, the number of second regulating portions 55 may be one instead of two, or may be three or more. The first nozzle 40 does not need to have the first regulating part 45. The second nozzle 50 does not need to have the second restriction part 55.

In one variation, the first nozzle 40 may be removably attached to the main unit 20. That is, the main body unit 20 and the nozzle section 30 may be separable. The nozzle section 30 may constitute a unit independent of the main unit 20. In this case, the nozzle section 30 may also be called a nozzle unit. Further, as described above, the first nozzle 40 may be formed integrally with the front end portion 21 of the main unit 20. That is, the first nozzle 40 may constitute the front end portion 21.

In a modified example, the number of contact portions 56 in the second nozzle 50 may be one instead of two, or may be three or more. The second nozzle 50 does not need to have the contact portion 56. The first nozzle 40 may have a similar structure to the contact portion 56.

In a modified example, in the second nozzle 50, the number of indicator parts 571, 572 may be one instead of two, or may be three or more. In a modification, the index portions 571 and 572 may be separate members from the main body portion 51. As an example, the index portions 571 and 572 may be printed matter.

(3) Aspects As is clear from the above embodiments and modifications, the present disclosure includes the following aspects. In the following, reference numerals are given in parentheses only to clearly indicate the correspondence with the embodiments.

The first aspect is a dust collector (10), which has a nozzle part (30), generates suction air that sucks dust, and sucks the dust through the nozzle part (30). The nozzle portion (30) includes a first nozzle (40) and a second nozzle (50) having front end portions (41a, 51a) having different shapes. The second nozzle (50) is relatively movable between a first position and a second position along the axis (A40) of the first nozzle (40). The first position and the second position differ in the positional relationship between the front end (41a) of the first nozzle (40) and the front end (41a) of the second nozzle (50). According to this aspect, different types of nozzles can be used without attaching or detaching the nozzles.

The second aspect is a dust collector (10) based on the first aspect. In a second aspect, the second nozzle (50) has a brush portion (520) at the front end (51a). The first nozzle (40) does not have a brush part (520) at the front end (41a). According to this aspect, the brush can be used without attaching or detaching the nozzle.

The third aspect is a dust collector (10) based on the second aspect. In a third aspect, the first position is a position where the front end (41a) of the first nozzle (40) is in front of the front end (51a) of the second nozzle (50). The second position is a position where the front end (51a) of the second nozzle (50) is in front of the front end (41a) of the first nozzle (40). According to this aspect, it becomes possible to easily select whether or not to use the brush portion (520).

A fourth aspect is a dust collector (10) based on the second or third aspect. In a fourth aspect, the first nozzle (40) is inside the second nozzle (50). According to this aspect, since the second nozzle (50) having the brush portion (520) is located outside the first nozzle (40), the first position and the second position can be easily distinguished visually.

A fifth aspect is a dust collector (10) based on the fourth aspect. In a fifth aspect, the first nozzle (40) has a first locking part (43) on the outer surface. The second nozzle (50) has a second locking portion (53) on its inner surface. The first locking part (43) and the second locking part (53) are arranged so that the axes of the first nozzle (40) and the second nozzle (50) are aligned in the first position and the second position. When (A40, A50) are parallel, they are combined with each other. The first locking part (43) and the second locking part (53) are arranged so that the axes of the first nozzle (40) and the second nozzle (50) are aligned in the first position and the second position. When (A40, A50) intersect, they do not combine with each other. According to this aspect, it becomes possible to stably position the second nozzle (50) at the first position or the second position.

A sixth aspect is a dust collector (10) based on the fifth aspect. In a sixth aspect, the second nozzle (50) includes a first wall (513) extending along the axis (A50) of the second nozzle (50), and an axis (A50) of the second nozzle (50). A50), the second wall part (515) is located on the opposite side of the first wall part (513). The second nozzle (50) is attached to the first nozzle (40) at the first wall (513) around a swing axis that intersects with the axis (A40) of the first nozzle (40). It is supported so as to be swingable between the position and the tilted position. The reference position is a position where the axes (A40, A50) of the first nozzle (40) and the second nozzle (50) are parallel. The tilted position is a position where the axes (A40, A50) of the first nozzle (40) and the second nozzle (50) intersect. The second locking portion (53) is located on the second wall portion (515) of the second nozzle (50). According to this aspect, the connection between the first locking part (43) and the second locking part (53) is released by simply moving the entire second nozzle (50) from the reference position to the tilted position. The second nozzle (50) can be moved relative to the first nozzle (40).

A seventh aspect is a dust collector (10) based on the sixth aspect. In a seventh aspect, the first nozzle (40) has a first auxiliary locking part (44) on the outer surface. The second nozzle (50) has a second auxiliary locking portion (54) on its inner surface. The first auxiliary locking part (44) and the second auxiliary locking part (54) are connected to the first nozzle (40) and the second nozzle (50) in the first position and the second position. are connected to each other when their axes (A40, A50) are parallel. The first auxiliary locking part (44) and the second auxiliary locking part (54) are connected to the first nozzle (40) and the second nozzle (50) in the first position and the second position. If their axes (A40, A50) intersect, they will not connect to each other. The second nozzle (50) has a pair of side walls (514) connecting the first wall (513) and the second wall (515). The second auxiliary locking portion (54) is located on at least one of the pair of side wall portions (514) of the second nozzle (50). According to this aspect, it becomes possible to stably position the second nozzle (50) at the first position or the second position. Further, according to this aspect, the first auxiliary locking portion (44) and the second auxiliary locking portion (54) can be connected by simply moving the entire second nozzle (50) from the reference position to the tilted position. It can be released to allow relative movement of the second nozzle (50) with respect to the first nozzle (40).

The eighth aspect is a dust collector (10) based on the seventh aspect. In an eighth aspect, the second auxiliary locking portion (54) is a projection. The first auxiliary locking part (44) includes a pair of recesses (441, 442) arranged along the axis (A40) of the first nozzle (40) and into which the projection fits, and a pair of recesses (441, 442). ) between which the protrusion slides. According to this aspect, the second nozzle (50) can be easily moved relative to the first nozzle (40).

A ninth aspect is a dust collector (10) based on the seventh or eighth aspect. In a ninth aspect, the pair of side wall portions (514) have elasticity. In the tilted position, the pair of side walls (514) are deformed by the first nozzle (40) so as to be separated from each other, and generate a restoring force that tends to return to the original shape. According to this aspect, since the second nozzle (50) returns from the tilted position to the reference position by its own return force, the convenience of the dust collector (10) is improved.

A tenth aspect is a dust collector (10) based on any one of the first to ninth aspects. In a tenth aspect, the dust collector (10) includes a suction part (22) that generates the suction air, a dust box attachment part (24) to which the dust box (60) is attached, and a dust collector that generates the suction air. The apparatus further includes a separating section (25) that separates dust from the suction air and collects it in the dust box (60). According to this aspect, trash can be easily disposed of.

An eleventh aspect is a dust collector (10) based on the tenth aspect. In an eleventh aspect, the dust collector (10) includes a battery pack attachment part (26) to which a battery pack (70) that supplies electric power for driving the suction part (22) to the suction part (22) is attached. It further includes: According to this aspect, the dust collector (10) can be used even in places where electric power cannot be obtained from a commercial power source.

A twelfth aspect is a nozzle unit (30) used in a dust collector (10). The dust collector (10) has a suction port (210) at the front end (21), and has a main body unit ( 20). The nozzle unit (30) is attached to the front end (21) of the main unit. The nozzle unit (30) includes a first nozzle (40) and a second nozzle (50) having front end portions (41a, 51a) of different shapes. The second nozzle (50) is relatively movable between a first position and a second position along the axis (A40) of the first nozzle (40). The first position and the second position differ in the positional relationship between the front end (41a) of the first nozzle (40) and the front end (51a) of the second nozzle (50). According to this aspect, different types of nozzles can be used without attaching or detaching the nozzles.

10 dust collector 20 main unit 21 front end 210 suction port 22 suction section 24 dust box mounting section 25 separation section 30 nozzle section (nozzle unit)
40 First nozzle 41a Front end 43 First locking portion 44 First auxiliary locking portion 441, 442 Recess 443 Guide groove 50 Second nozzle 51a Front end 513 First wall 514 Side wall 515 Second wall 520 Brush portion 53 Second locking part 54 Second auxiliary locking part 60 Dust box 70 Battery pack A40 axis A50 axis

Claims (12)

A dust collector that has a nozzle part and generates suction air that sucks dust to suck dust through the nozzle part,
The nozzle part has a first nozzle and a second nozzle having front end parts having different shapes,
the second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle;
The first position and the second position have different positional relationships between the front end of the first nozzle and the front end of the second nozzle,
the first nozzle is inside the second nozzle,
The first nozzle has a first locking part on the outer surface,
The second nozzle has a second locking part on the inner surface,
The first locking part and the second locking part are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position,
The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. ,
The first nozzle and the second nozzle further include a protrusion that restricts rotation of the second nozzle about the axis of the first nozzle.
Dust collector. The second nozzle has a brush portion at the front end,
The first nozzle does not have a brush portion at its front end.
The dust collector according to claim 1. The first position is a position where the front end of the first nozzle is in front of the front end of the second nozzle,
The second position is a position where the front end of the second nozzle is in front of the front end of the first nozzle.
The dust collector according to claim 2. The second nozzle is
a first wall extending along the axis of the second nozzle;
a second wall portion on the opposite side of the first wall portion with respect to the axis of the second nozzle;
The second nozzle is supported by the first nozzle at the first wall portion so as to be swingable between a reference position and a tilted position around a swing axis that intersects with the axis of the first nozzle,
The reference position is a position where the axes of the first nozzle and the second nozzle are parallel,
The tilted position is a position where the axes of the first nozzle and the second nozzle intersect,
the second locking part is on a second wall of the second nozzle;
The dust collector according to any one of claims 1 to 3. The first nozzle has a first auxiliary locking part on the outer surface,
The second nozzle has a second auxiliary locking part on the inner surface,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. death,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. Without,
The second nozzle has a pair of side walls connecting the first wall and the second wall,
The second auxiliary locking portion is located on at least one of the pair of side wall portions of the second nozzle.
The dust collector according to claim 4. A dust collector that has a nozzle part and generates suction air that sucks dust to suck dust through the nozzle part,
The nozzle part has a first nozzle and a second nozzle having front end parts having different shapes,
the second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle;
The first position and the second position have different positional relationships between the front end of the first nozzle and the front end of the second nozzle,
The second nozzle has a brush portion at the front end,
The first nozzle does not have a brush part at the front end,
the first nozzle is inside the second nozzle,
The first nozzle has a first locking part on the outer surface,
The second nozzle has a second locking part on the inner surface,
The first locking part and the second locking part are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position,
The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. ,
The second nozzle is
a first wall extending along the axis of the second nozzle;
a second wall portion on the opposite side of the first wall portion with respect to the axis of the second nozzle;
The second nozzle is supported by the first nozzle at the first wall portion so as to be swingable between a reference position and a tilted position around a swing axis that intersects with the axis of the first nozzle,
The reference position is a position where the axes of the first nozzle and the second nozzle are parallel,
The tilted position is a position where the axes of the first nozzle and the second nozzle intersect,
the second locking portion is on a second wall of the second nozzle;
The first nozzle has a first auxiliary locking part on the outer surface,
The second nozzle has a second auxiliary locking part on the inner surface,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. death,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. Without,
The second nozzle has a pair of side walls connecting the first wall and the second wall,
The second auxiliary locking portion is located on at least one of the pair of side wall portions of the second nozzle.
Dust collector. The second auxiliary locking portion is a protrusion,
The first auxiliary locking portion is
a pair of recesses lined up along the axis of the first nozzle into which the protrusion fits;
a guide groove in which the protrusion slides between the pair of recesses;
including,
The dust collector according to claim 5 or 6. the pair of side walls have elasticity;
In the tilted position, the pair of side wall portions are deformed by the first nozzle so as to be separated from each other, and generate a restoring force that tends to return to the original shape.
The dust collector according to any one of claims 5 to 7. a suction unit that generates the suction wind;
A dust box mounting part to which the dust box is attached;
a separation unit that separates the dust sucked by the suction wind from the suction wind and accumulates it in the dust box;
further comprising;
The dust collector according to any one of claims 1 to 8. further comprising a battery pack attachment part to which a battery pack for supplying electric power for driving the suction part to the suction part is attached;
The dust collector according to claim 9. A nozzle unit used in a dust collector,
The dust collector has a main unit that has a suction port at the front end and generates suction wind that sucks the dust to suck the dust through the suction port,
The nozzle unit is attached to the front end of the main unit,
The nozzle unit has a first nozzle and a second nozzle having front end portions having different shapes,
the second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle;
The first position and the second position have different positional relationships between the front end of the first nozzle and the front end of the second nozzle,
the first nozzle is inside the second nozzle,
The first nozzle has a first locking part on the outer surface,
The second nozzle has a second locking part on the inner surface,
The first locking part and the second locking part are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position,
The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. ,
The first nozzle and the second nozzle further include a protrusion that restricts rotation of the second nozzle about the axis of the first nozzle.
nozzle unit. A nozzle unit used in a dust collector,
The dust collector has a main unit that has a suction port at the front end and generates suction wind that sucks the dust to suck the dust through the suction port,
The nozzle unit is attached to the front end of the main unit,
The nozzle unit has a first nozzle and a second nozzle having front end portions having different shapes,
the second nozzle is relatively movable between a first position and a second position along the axis of the first nozzle;
The first position and the second position have different positional relationships between the front end of the first nozzle and the front end of the second nozzle,
The second nozzle has a brush portion at the front end,
The first nozzle does not have a brush part at the front end,
the first nozzle is inside the second nozzle,
The first nozzle has a first locking part on the outer surface,
The second nozzle has a second locking part on the inner surface,
The first locking part and the second locking part are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position,
The first locking part and the second locking part do not connect to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. ,
The second nozzle is
a first wall extending along the axis of the second nozzle;
a second wall portion on the opposite side of the first wall portion with respect to the axis of the second nozzle;
The second nozzle is supported by the first nozzle at the first wall portion so as to be swingable between a reference position and a tilted position around a swing axis that intersects with the axis of the first nozzle,
The reference position is a position where the axes of the first nozzle and the second nozzle are parallel,
The tilted position is a position where the axes of the first nozzle and the second nozzle intersect,
the second locking portion is on a second wall of the second nozzle;
The first nozzle has a first auxiliary locking part on the outer surface,
The second nozzle has a second auxiliary locking part on the inner surface,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle are parallel in the first position and the second position. death,
The first auxiliary locking portion and the second auxiliary locking portion are coupled to each other when the axes of the first nozzle and the second nozzle intersect in the first position and the second position. Without,
The second nozzle has a pair of side walls connecting the first wall and the second wall,
The second auxiliary locking portion is located on at least one of the pair of side wall portions of the second nozzle.
nozzle unit.

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