JP6137560B2 - Connector and cleaning device - Google Patents

Description

  The present invention relates to a cleaning tool connector for connecting a main body of a cleaning tool and a cleaning tool and transmitting a rotational driving force from the main body to the cleaning tool, and a cleaning device including the same.

  Conventionally, a cleaning device has been proposed in which a cleaning unit such as a brush or a pad is detachably connected to a main body unit having a driving unit, and the cleaning unit is rotated by a rotational driving force from the main body unit ( For example, see Patent Document 1). As shown in FIG. 13, for example, the conventional connecting tool used in such a cleaning apparatus includes a first connecting member 102 mounted on the main body (not shown) and a second connecting member 103 mounted on the cleaning portion C side. And a plurality of locking portions 171 provided on the second connecting member 103 are locked to a groove portion 121 defined between the connecting surface 142 of the first connecting member 102 and the locking member 152, The second connecting member 103 is configured not to be detached from the first connecting member 102. Further, the connection between the first connecting member 102 and the second connecting member 103 using the locking portion 171 can be easily released simply by pressing the cleaning portion while the cleaning device 100A is lifted from the floor surface. Has been.

JP 2013-236760 A

  However, with such a connector 101, there is no problem when cleaning the horizontal plane X1 of the floor X as shown in FIG. 13, but the cleaning device 100A is inclined from the horizontal plane X1 of the floor X to the inclined plane X2 as shown in FIG. When entering the place that has changed, there is a problem that the engagement of some of the locking portions 171 with respect to the groove 121 is disengaged.

  That is, in the state shown in FIG. 13, the first connecting member 102 and the second connecting member 103 are kept horizontal along the flat surface X1, and their axial centers coincide. However, in the state shown in FIG. 14, the first connecting member 102 is kept horizontal, while the second connecting member 103 is inclined by the reaction force from the inclined surface X2, and the axis of the second connecting member 103 is The first connecting member 102 intersects with an axis with respect to the axis. As a result, on the horizontal plane X1 side (the right side in FIG. 14A), a gap G is generated between the first connecting member 102 and the second connecting member 103, and the locking portion 171 is detached from the groove 121. In this way, the locking portion 171 that is disengaged from the groove portion 121 also rotates again to the groove portion 121 again by the reaction force from the inclined surface X2 until it reaches the inclined surface X2 side (left side in FIG. 14A). Although engaged, an abnormal noise is generated at this time. Such engagement and disengagement are repeatedly generated in the plurality of locking portions 171, so that continuous noise is generated in the connecting portion 101, and the cleaning operation is disturbed at the same time. 171 is damaged and the life of the coupler is shortened.

  An object of this invention is to provide the coupling tool which can ensure engagement of the 1st connection member and the 2nd connection member during rotation drive, and the cleaning apparatus provided with the same.

The connector according to claim 1 of the present invention is a connector for connecting a main body having a drive unit to a driven member, and is attached to the main body and rotated by a rotational driving force from the main body. A first connecting member, and a second connecting member attached to the driven member and connected to the first connecting member, wherein the first connecting member is provided with a first protrusion, the second connecting member is provided second protrusions, the first connecting member and the second coupling member by the first projecting portion in the direction of rotation of the first coupling member abuts against the second projecting portion The first protrusion includes a first side surface, and a first claw portion located on a radially outer side of the first connecting member with respect to the first side surface, and the second protrusion The portion is located on the second side surface and on the radially outer side of the second connecting member with respect to the second side surface. And when the first connecting member rotates, the first side surface comes into contact with the second side surface, whereby a rotational driving force is applied from the first connecting member to the second connecting member. There is transmitted, the first pawl portion includes a first engagement surface which is inclined toward the downstream side in the rotational direction toward the distal end of the first protrusion, the second pawl portion, said first 2 It has the 2nd engagement surface which inclines toward the upstream in the said rotation direction as it goes to the front-end | tip of a protrusion part.

The coupler of claim 2 of the present invention, the reference to the state where the rotation axis of the first connecting member is coincident with the vertical direction, the inclination angle with respect to the horizontal direction of the first engagement surface, said first engagement It is larger than the friction angle of the said 2nd nail | claw part with respect to a mating surface, It is characterized by the above-mentioned.

In the connector according to claim 3 of the present invention, the inclination angle of the first engagement surface with respect to the horizontal direction is smaller than 45 degrees with reference to a state in which the rotation axis of the first connection member coincides with the vertical direction. It is characterized by that.

The coupler of claim 4 of the present invention, during rotation of the front Symbol first connecting member, wherein the first engagement surface and the rotation angle is shifted in the first coupling member and the second coupling member the first The first claw portion and the second claw portion engage with each other by abutting against the two engaging surfaces, and the first driving force is generated by a parallel component parallel to the second engaging surface of the rotational driving force. The contact between the engagement surface and the second engagement surface is maintained.

In the connector according to claim 5 of the present invention, the first connecting member is provided with a locked portion, the second connecting member is provided with a locking portion, and the locking portion is the locked member. When the first connecting member and the second connecting member are connected to each other by engaging with the stopper, and the first engaging surface and the second engaging surface are in contact with each other, the engaging portion is And the locked portion are maintained.

According to a sixth aspect of the present invention, there is provided a cleaning apparatus comprising: a main body including a driving unit; a driven member that is rotationally driven by a rotational driving force from the main body; and the main body and the driven member. A coupling device for transmitting a rotational driving force from the main body to the driven member, wherein the coupling device is the coupling device according to any one of claims 1 to 5, the driven member you being a cleaning tool. Moreover, the connection tool of Claim 7 of this invention is a connector for cleaning apparatuses, Comprising: It is a connection tool in any one of Claims 1-5.

According to the connector according to claim 1 of the present invention, the second connecting member rotates integrally with the first connecting member by the first projecting portion coming into contact with the second projecting portion in the rotation direction of the first connecting member. Therefore, the first projecting portion and the second projecting portion function as a rotational drive force transmitting portion. And since the 1st nail | claw part and the 2nd nail | claw part engaged with this are each provided in the 1st protrusion part and 2nd protrusion part which are the transmission parts of a driving force, the rotational driving force from a main body is received. By utilizing this, the engagement between the first claw portion and the second claw portion can be strengthened. In addition, the first engagement surface of the first claw portion is inclined toward the downstream side in the rotation direction toward the tip of the first protrusion, and the second claw portion of the second claw portion that is in contact with the first engagement surface. Since the engagement surface is inclined toward the upstream side in the rotation direction as it goes toward the tip of the second protrusion, when the first engagement member is rotated, the parallel component force of the rotational driving force with respect to the second engagement surface is The direction of releasing the engagement between the first claw portion and the second claw portion works in the opposite direction. Therefore, the engagement between the first claw portion and the second claw portion can be strengthened using the rotational driving force transmitted from the main body. On the other hand, since such a rotational driving force does not work when the first engagement member is not rotating, the first claw is a slight force that exceeds the frictional force between the first claw portion and the second claw portion. The engagement between the part and the second claw part can be easily released.
In addition, since the first claw portion and the second claw portion are positioned radially outside the first and second side surfaces of the first and second projecting portions, respectively, a large torque can be applied to the second claw portion. In addition, the engagement between the first claw portion and the second claw portion during driving can be further strengthened.

According to coupler of claim 2 of the present invention, the inclination angle with respect to the horizontal direction of the first engagement surface is larger than the friction angle of the driven member relative to the first engagement surface, the first coupling member during non-rotating, it is possible to disengage the first teeth and the second pawl portion only by the own weight of the driven member. Therefore, in a state where the rotation driving force is not generated, only lifted to pull the first connecting member from the second coupling member mounted to the driven member, bother first coupling member in a direction opposite to the rotation direction Even if it does not rotate and the 1st nail | claw part and the 2nd nail | claw part are spaced apart in the circumferential direction, a 2nd connection member can be easily removed from a 1st connection member.

According to the coupling tool of the third aspect of the present invention, since the inclination angle of the first engagement surface with respect to the horizontal direction is smaller than 45 degrees, the first drive member rotates when the first connection member rotates. The parallel component of the force becomes relatively large, and the engagement between the first claw portion and the second claw portion using the rotational driving force can be further strengthened.

According to the coupling tool of the fourth aspect of the present invention, when the first engagement surface comes into contact with the second engagement surface during the rotation of the first connection member, the second engagement surface of the rotational driving force. Since the contact between the first engagement surface and the second engagement surface is maintained by the parallel component force parallel to the first engagement portion, the engagement between the first protrusion portion and the second protrusion portion is strengthened using the rotational driving force. can Ru.

According to the coupling tool of the fifth aspect of the present invention, the first coupling member and the second coupling member are coupled by the latching portion latching to the latched portion, and the first engagement surface and the second coupling member are coupled. In the state where the engaging surface is in contact, the locking between the locking portion and the locked portion is maintained, so that by maintaining the engagement between the first claw portion and the second claw portion, the engagement is maintained. It can prevent that a stop part remove | deviates from a to-be-latched part.

According to the cleaning device of the sixth aspect of the present invention, since the connector according to any one of the first to fifth aspects is provided, the same effect as described above can be obtained.

The perspective view of the cleaning apparatus provided with the coupling tool which concerns on embodiment of this invention. The disassembled perspective view which looked at the coupling tool shown in FIG. 1 from diagonally upward. The disassembled perspective view which looked at the coupling tool shown in FIG. 2 from diagonally downward. The disassembled perspective view of the 1st connection member shown in FIG. The expanded perspective view of the 1st protrusion part which the 1st connection member shown in FIG. 2 has. FIG. 6 is a sectional view taken along line VI-VI in FIG. 2. The expansion perspective view of the 2nd projection part which the 2nd connecting member shown in Drawing 2 has. The figure which shows the positional relationship of the 1st protrusion part and the 2nd protrusion part at the time of connecting a 1st connection member and a 2nd connection member. The longitudinal cross-sectional view of the coupling tool shown in FIG. XX sectional drawing of FIG. The side view which shows the contact state of the 1st protrusion part in the state of FIG. 9, and a 2nd protrusion part. The figure explaining the component of the force concerning the nail | claw part of a 2nd protrusion part. (A) is principal part sectional drawing of the cleaning apparatus provided with the conventional connector, (b) is an expanded sectional view of the area | region A in (a). (A) is principal part sectional drawing which shows the state which the cleaning apparatus shown in FIG. 13 got on the inclined surface, (b) is an expanded sectional view of the area | region B in (a).

  Hereinafter, with reference to an accompanying drawing, a cleaning device concerning an embodiment of the present invention is explained.

A cleaning apparatus A shown in FIG. 1 includes a main body B, a cleaning unit (driven member) C such as a brush or a pad, and a connector 1 for connecting the main body B and the cleaning unit C. The main body B is provided with a drive unit and an operation unit (not shown). By driving the main body B in a state where the cleaning unit C is connected to the main body B via the connector 1, the cleaning unit C is rotated with the rotation axis C1. The floor surface and the like can be cleaned by rotating in the rotation direction R (or the opposite direction) around the center.

  The connector 1 includes a first connecting member 2 attached to the main body B and a second connecting member 3 attached to the cleaning unit C. The first connecting member 2 and the second connecting member 3 will be described later. It is detachably connected without requiring complicated operations and tools.

  With reference to FIGS. 2 to 4, the first connecting member 2 includes a first base portion 4 and a bulging portion 5. The first base portion 4 has a ring shape having a circular through-hole 41 in the center, and a concentric bulge concentric with the through-hole 41 on its connecting surface 42 (surface facing the second connecting member 3). A part support part 43 is provided.

  The bulging part 5 is supported by the bulging part support part 43 of the first base part 4, and includes a main body part 51 and a locking member 52. A through-hole 53 is provided at the center of the main body 51, and a substantially cylindrical base end 51a attached to the bulge support 43, and a frustoconical tip 51b whose outer diameter gradually decreases toward the tip. Are integrally formed. The locking member 52 is an annular member, and is externally fitted to the base end portion 51a of the bulging portion 5, whereby an annular groove portion 21 (see FIG. 5) is formed between the locking member 52 and the first base portion 4. 3) is specified.

  The connecting surface 42 of the first base part 4 is further provided with a plurality of first protrusions 6 and a frame-like part 44 standing from the outer peripheral edge of the first base part 4. The plurality of first protrusions 6 are arranged at predetermined intervals in the circumferential direction D2 (rotation direction R) of the first base part 4 so as to surround the bulging part support part 43, and the rotation shaft of the first connecting member 2 is used as the rotation axis. It extends radially in the center. Each first projecting portion 6 includes a pair of claw portions 6A projecting on both sides in the circumferential direction D2. Each first projecting portion 6 gradually decreases in height in the axial direction D1 toward the radially outer side of the first base portion 4 so as to have a vertex 6B on the radially inner side of the first base portion 4. And it is comprised so that it may reduce gradually as it goes to the circumferential direction D2 both sides.

  More specifically, referring to FIG. 5, each first projecting portion 6 is formed integrally with a first connecting portion 60 and a first connecting portion 60 that are located on the radially inner side of the first base portion 4. A second connecting portion 61 located on the radially outer side of the one base portion 4.

  The first connecting portion 60 has a substantially pentagonal vertical cross section, the base end portion 62 has a pair of side surfaces (first side surfaces) 62a extending along the axial direction D1, and the tip end portion 63 of each other becomes closer to the tip end. And a pair of inclined surfaces 63a inclined in the direction approaching. The second connecting portion 61 has a mushroom-shaped longitudinal section, and includes a support portion 64 on the proximal end side and a head portion 65 on the distal end side. In the circumferential direction D2, the width W1 of the support portion 64 of the second connection portion 61 is set to be smaller than the width W2 of the base end portion 62 of the first connection portion 60, and the maximum width of the head 65 of the second connection portion 61 W3 is set to be larger than the width W2 of the base end portion 62 of the first connecting portion 60. The head 65 of the second connecting portion 61 has a pair of engagement surfaces (first engagement surfaces) 65a inclined toward the outer side in the circumferential direction D2 so as to be separated from each other toward the tip, and the engagement surface A pair of inclined surfaces 65b that are located on the tip side of 65a and incline toward the inside so as to approach each other toward the tip, and the pair of engaging surfaces 65a and the pair of inclined surfaces 65b Defines the pair of claw portions 6A described above. Further, the inclined surface 65b is provided continuously with the inclined surface 63a of the first connecting portion 60, and the inclined surfaces 63a and 65b constitute a guided surface.

  Referring to FIG. 2, the second connecting member 3 includes a substantially cylindrical fitting portion 7 and a ring-shaped second base portion 8 formed integrally with the fitting portion 7 on the outer periphery of the fitting portion 7. And having. A plurality of locking portions 71 and a plurality of support portions 72 are alternately formed at the tip of the fitting portion 7 along the circumferential direction of the second base portion 8 (the rotation direction R of the cleaning portion C). The locking part 71 has flexibility and can be locked in the groove part 21 as the locking part described above. Each locking portion 71 has a wall surface portion 73 that extends along the axial direction D <b> 1 and a protruding portion 74 that protrudes toward the center of the second connecting member 3. As shown in FIG. 6, the protrusion 74 has a taper shape in which the thickness in the axial direction D1 gradually decreases toward the center in the radial direction of the second connecting member 3, and is slightly positioned on the proximal end side. It has a lower surface 74a that is curved and an upper surface 74b that is located on the tip side and curves in a concave shape.

  Referring to FIG. 2, the connection surface 82 of the second base part 8 (the surface facing the first connection member 2) is arranged in the circumferential direction D <b> 2 of the second base part 8 so as to surround the fitting part 7. A plurality of second projecting portions 9 arranged at predetermined intervals are formed so as to project, and a frame-shaped portion 84 rising from the outer peripheral edge of the second base portion 8 is provided. The plurality of second projecting portions 9 abuts on the first projecting portion 6 when the first connecting member 2 rotates, thereby enabling the second connecting member 3 to rotate. They have the same shape and arrangement.

  That is, each 2nd protrusion part 9 has a pair of nail | claw part 9A which protrudes in the circumferential direction D2 both sides, and is comprised so that it may have the vertex 9B on the radial direction inner side of the 2nd base part 8. The height dimension in the direction D1 is configured to gradually decrease toward the radially outer side of the second base portion 8 and gradually decrease toward the both sides of the circumferential direction D2. Further, as shown in FIG. 7, each second projecting portion 9 is formed integrally with the first connecting portion 90 and the first connecting portion 90 that are located on the radially inner side of the second base portion 8. And a second connecting portion 91 located on the radially outer side of the portion 8.

  The first connecting portion 90 has a substantially pentagonal longitudinal cross section, the base end portion 92 has a pair of side surfaces (second side surfaces) 92a extending along the axial direction D1, and the distal end portions 93 of the first end portion 93 toward each other. And a pair of inclined surfaces 93a inclined in the direction approaching. The second connecting portion 91 has a mushroom-shaped longitudinal section, and includes a support portion 94 on the proximal end side and a head portion 95 on the distal end side. In the circumferential direction D2, the width W4 of the support portion 94 of the second connecting portion 91 is set to be smaller than the width W5 of the base end portion 92 of the first connecting portion 90, and the maximum width of the head portion 95 of the second connecting portion 91. W6 is set to be larger than the width W4 of the base end portion 92 of the first connecting portion 90. The head portion 95 of the second connecting portion 91 has a pair of engagement surfaces (second engagement surfaces) 95a inclined toward the outer side in the circumferential direction D2 so as to be separated from each other toward the tip, and the engagement surface A pair of inclined surfaces 95b that are located closer to the tip than 95a and are inclined inward so as to approach each other toward the tip, and the pair of engaging surfaces 95a and the pair of inclined surfaces 95b Defines the pair of claw portions 9A described above. Further, the inclined surface 95b is provided continuously with the inclined surface 93a of the first connecting portion 90, and a guide surface is constituted by these inclined surfaces 93a and 95b.

  Next, the connection between the first connecting member 2 and the second connecting member 3 thus configured will be described. In order to connect the first connecting member 2 to the second connecting member 3, the connecting surface 42 of the first connecting member 2 is opposed to the connecting surface 82 of the second connecting member 3 as shown in FIG. The bulging part 5 of the member 2 is inserted into the fitting part 7 of the second connecting member 3. At this time, since the bulging portion 5 has a truncated cone shape, the user places the tip of the bulging portion 5 on the second connecting member 2 (the locking portion 71 and the support portion 72 of the second connecting member 2, the second protrusion). When the first connecting member 2 is slid back and forth and left and right in contact with the portion 9 and the like, the bulging portion 5 is naturally guided into the fitting portion 7.

  At this time, as shown in FIGS. 8A and 8B, the tip of the first protrusion 6 may come into contact with the tip of the second protrusion 9, but in this case also, the first protrusion 6 and the second projecting portion 9 are not in contact with each other on the surface, but are in contact with each other at the apexes 6B and 9B. And since the main body B and the cleaning part C to which the first connecting member 2 and the second connecting member 3 are attached are not fixed to the floor surface or the like, even if the vertices 6B and 9B encounter a tangent state, It becomes extremely unstable. Therefore, the first connecting member 2 slides in the direction of the arrow D3 along the guide surfaces (inclined surfaces 93a and 95b) of the second protrusion 9 by its own weight, and further slides in the direction of the arrow D4 shown in FIG. As shown in FIG. 8D, the first protrusions 6 are aligned with the second protrusions 9 in the circumferential direction D2. Therefore, the problem that the 1st protrusion part 6 and the 2nd protrusion part 9 contact | abut in the axial direction D1, and the bulging part 5 cannot be inserted in the fitting part 7 can be avoided.

  And when the bulging part 5 is inserted in the fitting part 7 in this way, as shown in FIG. 9, the latching | locking part 71 will be latched by the groove part 21 as a to-be-latched part. That is, in the process of inserting the bulging portion 5 into the fitting portion 7, the bulging portion 5 (more specifically, the locking member 52 of the bulging portion 5) is the projection 74 (FIG. 6), and bends the locking portion 71 radially outward while moving along the upper surface 74b. When the bulging portion 5 is completely inserted into the fitting portion 7, the urging portion 5 is released from being pressed against the locking portion 71, and the locking portion 71 returns to its original state. 71 is latched by the groove part 21, and the 1st connection member 2 and the 2nd connection member 3 are connected in the rotating shaft direction D1. In this state, the protrusion 74 does not contact the locking member 52, and a slight play (gap) is defined between them (that is, the rotation between the protrusion 74 and the locking member 52 is rotated). A predetermined distance apart in the axial direction D1).

  Thus, when the 1st connection member 2 and the 2nd connection member 3 are connected, it will be in the state in which the 1st protrusion part 6 and the 2nd protrusion part 9 were located in a line with the circumferential direction D2. And if the main body B is driven in this state and the 1st connection member 2 is rotated, as shown in FIG.10 and FIG.11, the side surface 62a of each 1st protrusion part 6 will be located in the rotation direction R downstream. It contacts the side surface 92a of the second protrusion 9. Thereby, the rotational driving force from the 1st connection member 2 is transmitted to the 2nd connection member 3 when the side surface 62a of the 1st protrusion part 6 presses the side surface 92a of the 2nd protrusion part 9, and the 2nd connection member 3 and the cleaning part C rotate. In this state, the engagement surface 65a of the claw portion 6 and the engagement surface 95a of the claw portion 9A are not in contact with each other, and are separated by a predetermined distance in the rotation axis direction D1, and the predetermined distance is as described above. The distance is set smaller than the distance between the protrusion 74 and the locking member 52.

  Next, as shown in FIG. 14, a case where the cleaning device A being driven enters a place (for example, a slope) where the cleaning device A is changing from a horizontal surface to an inclined surface will be described. Referring also to FIG. 12, when a part of the cleaning device A rides on the inclined surface in this way, a force F <b> 1 acting in a direction (undrawing direction D <b> 5) for releasing the engagement between the locking portion 71 and the groove portion 21 is generated. The first protrusion 6 rises relative to the second protrusion 9 by the force F1 in the pulling direction D5, and the first protrusion 6 is pressed against the engagement surface 95a of the claw 9A. The first protrusion 6 is also pressed against the engagement surface 95a of the claw 9A by the rotational driving force F4 in the rotational direction R from the main body B of the cleaning device A. As described above, the distance between the engagement surface 65a of the claw portion 6 and the engagement surface 95a of the claw portion 9A is smaller than the distance between the projection 74 of the locking portion 71 and the locking member 52. Therefore, even if the first protruding portion 6 rises with respect to the second protruding portion 9 and the claw portion 6A comes into contact with the claw portion 9A in this way, the locking portion 71 is disengaged from the groove portion 21. There is nothing.

  The force F1 acting on the engagement surface 95a in this way can be decomposed into a vertical component force F2 perpendicular to the engagement surface 95a and a parallel component force F3 parallel to the engagement surface 95a, and the rotational driving force F4. Can be broken down into a vertical component force F5 perpendicular to the engagement surface 95a and a parallel component force F6 parallel to the engagement surface 95a. Then, in order to release the engagement between the claw portion 6A and the claw portion 9A while the cleaning device A is driven, a force F1 having a parallel component force F3 larger than the parallel component force F6 of the rotational drive force F4 from the main body B is used. Although necessary, the force F1 has a parallel component force F3 that exceeds the parallel component force F6 of the rotational driving force F4 from the main body B to the extent that the cleaning device A has entered the place where the horizontal surface has changed to the inclined surface. Will not occur. Therefore, even if the cleaning device A enters the place where the horizontal plane changes to the inclined plane, and the rotation angles of the first connecting member 2 and the second connecting member 3 are shifted and the directions of both rotation axes intersect, The engagement between the claw portions 6A and 9A is maintained, whereby the state in which the locking portion 71 is locked to the groove portion 21 is maintained, and problems such as the generation of abnormal noise in the conventional coupler do not occur.

  When the cleaning device A moves away from the horizontal plane to the inclined plane and returns to the horizontal plane (or completely shifts to the inclined plane), the rotation angle of the first connecting member 2 and the second connecting member 3 is shifted. Is eliminated, and the first protrusion 6 and the second protrusion 9 return from the state shown in FIG. 12 to the state shown in FIG. That is, during normal rotation, the first protrusion 6 and the second protrusion 9 abut each other on the side surfaces 62a and 92a, and the rotation angles of the first connecting member 2 and the second connecting member 3 are shifted. The claw portions 6A and 9A are configured to engage with each other only. Unlike the case where it is configured (designed) so that the claws 6A and 9A are always engaged with each other at the time of rotation, the provision of the first protrusion 6 and the second protrusion 9 is assumed. Even if a manufacturing error occurs in the dimensions, the contact between the side surfaces 62a and 92a during normal rotation and the claw portions 6A and 9A in the case where the rotation angles of the first connecting member 2 and the second connecting member 3 are deviated. Engagement can be realized reliably.

  On the other hand, in order to release the connection between the first connecting member 2 and the second connecting member 3, the drive of the main body B is stopped and the cleaning device A is lifted from the floor surface. In this state, since the plurality of locking portions 71 are locked to the groove portion 21, the cleaning portion C to which the second connecting member 3 is attached falls off from the first connecting member 2 attached to the main body B. There is no. And if the cleaning part C is pushed down in this state, engagement with the latching | locking part 71 and the groove part 21 will be released, and the 1st connection member 2 can be easily removed from the 2nd connection member 3. FIG.

  Here, in a state in which the connecting tool 1 stops rotating, the claw portion 6A of the first projecting portion 6 and the claw portion 9A of the second projecting portion 9 are not firmly engaged. The force required to remove the second connecting member 3 from the second connecting member 3 is substantially the same as the force required to remove the first connecting member from the second connecting member in the conventional connector having no claw portions 6A, 9A. That is, since the rotational driving force F4 does not work in the state where the connector 1 stops rotating, in this state, the gap between the engagement surface 65a of the claw portion 6A and the engagement surface 95a of the claw portion 9A. The engagement between the claws 6A and 9A can be easily released by applying a slight force in the direction of the arrow D5 having the parallel component force F3 exceeding the frictional force.

  Therefore, in a state where the connecting tool 1 stops rotating, the user does not bother to rotate the first connecting member 2 to separate the first protruding portion 6 and the second protruding portion 9 in the circumferential direction D2. Also, the engagement between the locking portion 71 and the groove portion 21 and the engagement between the claw portions 6A and 9A can be easily released simply by pulling the first connecting member 2 away from the second connecting member 3 in the axial direction D1. And the connection between the first connecting member 2 and the second connecting member 3 can be released.

  Here, on the basis of the state where the rotation axes of the first and second connecting members 2 and 3 coincide with the vertical direction, the inclination angle α of the engaging surface 65a of the claw portion 6A with respect to the horizontal direction is the engaging surface 65a. It is preferable to set it larger than the friction angle θ of the claw portion 9A against. Thus, by setting the inclination angle α to be larger than the friction angle θ, the engagement between the claw portions 6A and 9A can be released only by the own weight of the cleaning portion C. This is because when the inclination angle α is larger than the friction angle θ, the horizontal component F9 with respect to the engagement surface 65a of the dead weight F7 of the cleaning portion C multiplies the friction coefficient μ between the claw portions 6A and 9A by the vertical component F8. This is because it becomes larger than the obtained value (horizontal component F9> friction coefficient μ × vertical component F8). Therefore, when the connector 1 is not rotated, the user simply lifts the first connecting member 2 from the second connecting member 3 attached to the cleaning unit C, and easily releases the engagement between the claws 6A and 9A. be able to. Moreover, it is preferable to set the inclination angle α of the engagement surface 65a to be smaller than 40 degrees. By making the inclination angle α of the engagement surface 65a smaller than 45 degrees, the parallel component F6 of the rotational driving force F4 during the rotation of the coupler 1 becomes relatively large, and the claw portion 6A using the rotational driving force F4. , 9A can be more firmly engaged with each other.

  Thus, in this embodiment, claw part 6A, 9A is provided in the 1st and 2nd protrusion parts 6 and 9 which are power transmission parts, and the engaging surfaces 65a and 95a are the 1st and 2nd protrusion parts 6. , 9 is configured to incline outward in the circumferential direction D2 (rotation direction R) as it goes to the tip of the claw, 9, so that the claw portion 6A when the cleaning device A is driven using the rotational driving force F4 from the main body B. , 9A can be firmly engaged. And it can prevent that the latching | locking part 71 remove | deviates from the groove part 21 by maintaining the engagement between claw part 6A, 9A in this way.

  Further, since the rotational driving force F4 does not work when the cleaning device A is stopped, the engagement between the claw portions 6A and 9A is performed with a slight force that exceeds the frictional force between the claw portion 6A and the claw portion 9A. The force required for releasing the connection between the first connecting member 2 and the second connecting member 3 is a force required in a conventional connecting tool that does not have the claw portions 6A and 9A. And practically the same.

  Further, in the present embodiment, the claw portions 6A and 9A are provided on the radially outer portions of the first and second projecting portions 6 and 9, so that they are connected to the first and second projecting portions 6 and 9. Compared with the case where it is provided in the radially inner portion, a larger torque can be applied to the claw portion 9A, and the connection between the first connecting member 2 and the second connecting member 3 during driving can be ensured.

  In the present embodiment, the claw portions 6A are provided on both sides of the first protrusion 6 in the circumferential direction D2, and the claw portions 9A are provided on both sides of the second protrusion 9 in the circumferential direction D2. Even when rotated in the direction, the engagement between the claw portion 6A and the claw portion 9A can be realized.

  As mentioned above, although the cleaning apparatus concerning embodiment of this invention was demonstrated with reference to attached drawing, this invention is not limited to this embodiment, Various deformation | transformation thru | or correction | amendment are possible, without deviating from the scope of the present invention. It is.

  For example, in the above-described embodiment, the case where the main body B is attached to the first connecting member 2 and the cleaning unit C is attached to the second connecting member 3 has been described as an example. However, the connecting tool 1 is not limited to such a configuration. The cleaning unit C may be attached to the first connecting member 2 and the main body B may be attached to the second connecting member 3.

  Moreover, in the said embodiment, although the 1st protrusion part 6 and the 2nd protrusion part 9 were set as the structure which has a pair of nail | claw part 6A, 9A on the circumferential direction D2, both sides of the rotation direction of the coupler 1 are limited to one direction. In this case, one of the claw portions 6A and 9A can be omitted. In this case, the claw portion 6A is provided on the downstream side in the rotation direction R for the first protrusion 6, and the engagement surface 65a is inclined toward the downstream side in the circumferential direction R toward the tip of the first protrusion 6. For the two projecting portions 9, a claw portion 9 </ b> A may be provided on the upstream side in the rotational direction R, and the engagement surface 95 a may be inclined toward the upstream side in the rotational direction R as it goes toward the tip of the second projecting portion 9.

DESCRIPTION OF SYMBOLS 1 Connector 2 1st connection member 3 2nd connection member 6 1st protrusion part 6A Claw part (1st claw part)
9 2nd protrusion part 9B Claw part (2nd claw part)
A Cleaning device B Body C Cleaning part R Direction of rotation

Claims (7)

A coupling tool for coupling a main body including a driving unit to a driven member,
A first connecting member mounted on the main body and rotated by a rotational driving force from the main body;
A second connecting member attached to the driven member and connected to the first connecting member;
The first connecting member is provided with a first protruding portion, the second connecting member is provided with a second protruding portion , and the first protruding portion in the rotation direction of the first connecting member is the second protruding portion. The second connecting member rotates integrally with the first connecting member by contacting the
The first projecting portion has a first side surface, and a first claw portion located on a radially outer side of the first connecting member than the first side surface,
The second projecting portion has a second side surface, and a second claw portion located on a radially outer side of the second connecting member than the second side surface,
When the first connecting member rotates, a rotational driving force is transmitted from the first connecting member to the second connecting member by bringing the first side surface into contact with the second side surface,
The first claw portion has a first engagement surface that inclines toward the downstream side in the rotation direction toward the tip of the first protrusion,
The said 2nd nail | claw part has a 2nd engaging surface which inclines toward the upstream in the said rotation direction as it goes to the front-end | tip of the said 2nd protrusion part, The coupling tool characterized by the above-mentioned.   With reference to the state in which the rotation axis of the first connecting member coincides with the vertical direction, the inclination angle of the first engagement surface with respect to the horizontal direction is larger than the friction angle of the second claw portion with respect to the first engagement surface. The connector according to claim 1, wherein the connector is large.   The inclination angle with respect to the horizontal direction of the first engagement surface is smaller than 45 degrees with reference to a state where the rotation axis of the first connection member coincides with the vertical direction. Coupling tool. When the first connecting member is rotated, if the rotation angle of the first connecting member and the second connecting member is deviated, the first engaging surface comes into contact with the second engaging surface, whereby the first claw parts and engages the engagement with the second pawl portion is abutted with the one of the rotational driving force, the second engagement surface and the first engagement surface by parallel component force parallel to the second engagement surface Is maintained, The coupling tool in any one of Claims 1-3 characterized by the above-mentioned.   The first connecting member is provided with a locked portion, the second connecting member is provided with a locking portion, and the locking portion is locked to the locked portion, whereby the first connecting member is provided. When the member and the second connecting member are connected and the first engaging surface and the second engaging surface are in contact with each other, the locking between the locking portion and the locked portion is maintained. The coupling tool according to any one of claims 1 to 4, wherein: A main body including a driving unit, a driven member that is rotationally driven by a rotational driving force from the main body, and the main body and the driven member are connected to each other so that the rotational driving force from the main body is applied to the driven member A cleaning device comprising a connector for transmitting,
The connector is the connector according to any one of claims 1 to 5,
The cleaning device, wherein the driven member is a cleaning tool.   It is a cleaning device connector, The connector in any one of Claims 1-4 characterized by the above-mentioned.

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