JP4223364B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner.

  In order to facilitate movement during cleaning work or between rooms, a shoulder-type vacuum cleaner provided with a shoulder belt on the main body of the vacuum cleaner has been proposed.

  The shoulder belt mechanism in the shoulder-type vacuum cleaner is attached so that the front end portion of the shoulder belt pulled out from the belt winding device provided at the rear portion of the cleaner body is locked to the front locking portion. The shoulder belt attached in this manner is in a state of being stretched along the upper surface of the cleaner body because the belt winding device always acts to wind the shoulder belt.

  When moving the vacuum cleaner main body of such a shoulder-type vacuum cleaner in the form of being suspended by a shoulder belt, the vacuum cleaner body is pulled up by grabbing and pulling the shoulder belt, and then the shoulder belt is Hang it over your shoulder to support the load.

Japanese Utility Model Publication No. 61-190959

Japanese Utility Model Publication No. 61-190960

  In such a shoulder-type vacuum cleaner, a shoulder pad is provided on the shoulder belt in order to avoid concentration of load applied to the shoulder from the shoulder belt. It is desirable that the shoulder pad is positioned so as to be hooked on the shoulder when the shoulder belt is pulled out from the belt winding device and hung on the shoulder. However, the shoulder belt is housed in the belt take-up device when not in use, and the shoulder pad is located at the tip of the shoulder belt. Therefore, the shoulder belt is grasped and the shoulder belt is removed from the belt take-up device. When pulling out, it is difficult to swing the shoulder pad to a position where it touches the shoulder.

  Further, when the belt winding device is located at the rear part of the cleaner body and the engaging part for engaging the front end of the shoulder belt is located at the front part, the shoulder belt in the stored state is placed on the upper surface of the cleaner body. Therefore, the attachment / detachment operation when maintaining the dust collecting means (dust collection bag or cyclone dust collector) is hindered.

  One object of the present invention is to realize a vacuum cleaner that is convenient to handle a shoulder belt.

  Another object of the present invention is to realize a vacuum cleaner that is convenient to handle a shoulder belt and a shoulder pad. More specifically, there is a vacuum cleaner that can easily adjust the position of the shoulder belt and the position of the shoulder pad by pulling out the shoulder belt from the belt winding device.

  Still another object of the present invention is to realize a vacuum cleaner that can reduce wear deterioration of a shoulder belt and a shoulder pad.

  Still another object of the present invention is to suppress an increase in the size of the cleaner body due to the addition of a shoulder belt mechanism.

  Still another object of the present invention is to reduce the deterioration of the operability of the cleaner body by adding a shoulder belt mechanism.

The present invention includes a belt take-up reel to which a take-up force is applied by a take-up spring, a shoulder belt wound around the belt take-up reel, and a shoulder pad that slidably penetrates the shoulder belt. In the vacuum cleaner that attaches the shoulder belt mechanism to the vacuum cleaner body and makes it possible to lift the vacuum cleaner body by the shoulder belt,
The take-up spring in the shoulder belt mechanism holds the vacuum cleaner main body until all of the shoulder belt is unwound from the belt take-up reel when the shoulder belt is pulled out of the belt take-up reel by grasping the shoulder pad and pulling it up. Set the spring constant so that the winding force is not large enough to float ,
Further, the shoulder belt mechanism includes a belt take-up box that houses the belt take-up reel and a take-up spring, and the take-up box rotatably supports the belt take-up reel by a bearing mandrel. A rectangular shape which is flat in the axial direction of the bearing mandrel, and is configured so that the shaft center of the bearing mandrel faces the front-rear direction of the cleaner body on the winding box fitting portion formed on the rear side of the cleaner body. It is configured to be detachably mounted in a posture that becomes flat along the rear side surface.

Further, the present invention provides a belt take-up device that houses a belt take-up reel to which a take-up force is applied by a take-up spring, a shoulder belt wound around the belt take-up reel, and the belt take-up device. In an electric vacuum cleaner in which a shoulder belt mechanism including a shoulder pad that slidably penetrates the shoulder belt is attached to the main body of the vacuum cleaner and the vacuum cleaner body can be lifted by the shoulder belt.
In the shoulder belt mechanism, the belt winding device is attached to the rear side portion of the cleaner body, and hooks coupled to the tips of the shoulder belts pulled out from the belt winding device are connected to the tip portion and the central portion of the cleaner body. Attach it to the main body of the vacuum cleaner by selectively engaging it with the belt locking pin provided at the top,
The take-up spring in the belt take-up device is a main body of the vacuum cleaner until all of the shoulder belt is unwound from the belt take-up reel when the shoulder belt is pulled out of the belt take-up reel by grasping and pulling up the shoulder pad. The spring constant is set so that the winding force is not large enough to float.

  In the present invention, the spring constant of the take-up spring in the belt take-up device for lifting the main body of the vacuum cleaner is adjusted when the shoulder belt is pulled out of the belt take-up reel by grasping the shoulder pad with one hand and pulling it up. Since the winding force is not large enough to lift the vacuum cleaner until it is unwound from the belt take-up reel, the shoulder belt can be easily pulled out and the shoulder pad can be slid. A convenient vacuum cleaner will be realized.

  More specifically, the shoulder belt can be pulled out of the belt winding device and the position of the shoulder pad can be easily adjusted by one-hand operation, and wear deterioration of the shoulder belt and the shoulder pad can be reduced.

  The shoulder belt mechanism includes a belt take-up box that accommodates the belt take-up reel and the take-up spring, and the take-up box rotatably supports the belt take-up reel by a bearing mandrel and includes the bearing. It is configured in a square shape that is flat in the axial direction of the mandrel, and the rear axis of the bearing mandrel faces the front-rear direction of the cleaner body in the winding box fitting portion formed on the rear side of the cleaner body. By configuring so as to be detachable in a posture that becomes flat along the side surface, an increase in the size of the cleaner body due to the addition of the shoulder belt mechanism can be suppressed.

  Further, the shoulder belt mechanism has the belt winding device attached to the rear side portion of the vacuum cleaner body, and hooks coupled to the front ends of the shoulder belts drawn from the belt winding device are connected to the front end portion and the central portion of the vacuum cleaner main body. It is attached to the main body of the vacuum cleaner by selectively engaging with a belt locking pin provided so as to be positioned on the upper part of the main body. It is possible to reduce the decrease in the detachability operability of the.

The vacuum cleaner according to the present invention includes a belt take-up reel to which a take-up force is applied by a mainspring spring, a belt take-up device that houses a shoulder belt wound around the belt take-up reel, and the belt take-up device. In the vacuum cleaner, the shoulder belt mechanism having a shoulder pad that slidably penetrates the shoulder belt is attached to the main body of the vacuum cleaner, and the vacuum cleaner body can be lifted up by the shoulder belt.
The belt take-up device in the shoulder belt mechanism includes a belt take-up box having a rectangular shape flat in the axial direction of the bearing mandrel that rotatably supports and encloses the belt take-up reel by a bearing mandrel. Attach the belt take-up box to the rear side of the cleaner body in a posture that is flat along the rear side of the cleaner body so that the axis of the mandrel faces the front-rear direction of the cleaner body, By selectively engaging a swivel hook coupled to the front end of the shoulder belt pulled out from the belt take-up box with a belt locking pin provided so as to be positioned above the front end portion and the central portion of the cleaner body. Attach it to the vacuum cleaner body
The mainspring spring in the belt take-up device holds the vacuum cleaner main body until all of the shoulder belt is unwound from the belt take-up reel when the shoulder belt is pulled out of the belt take-up reel by grasping and pulling up the shoulder pad. Set the spring constant so that the winding force is not large enough to float.

  1 to 5 show a vacuum cleaner main body in the electric vacuum cleaner according to the first embodiment. FIG. 1 is an external perspective view as seen from the front diagonally upward, and FIG. FIG. 3 is an external perspective view seen from obliquely upward in the state where the handle is raised, and FIG. 4 is an external perspective view seen from obliquely upward from the front where the dust collecting case is removed after raising the handle. FIG. 5 and FIG. 5 are longitudinal side views.

  6 to 11 show a shoulder belt mechanism, FIG. 6 is an external perspective view showing the whole, FIG. 7 is a longitudinal side view of the belt winding device, and FIG. 8 is a longitudinal section of the belt winding device. 9 is a vertical side view of the shoulder pad portion, FIG. 10 is a vertical front view of the shoulder pad portion, and FIG. 11 is a bottom view of the shoulder pad.

  FIG. 12 is a side view of the electric vacuum cleaner showing a state in which the shoulder belt is pulled out.

  The vacuum cleaner in Example 1 is configured to collect dust by sucking dust together with air from the suction port by connecting a hose having a suction port connected to the tip thereof via a joint pipe to the vacuum cleaner body. The vacuum cleaner main body is illustrated and described, and the illustration and description of the joint pipe and the suction port configured in the same manner as a conventional vacuum cleaner are omitted.

  The cleaner body 1 will be described with reference to FIGS. The main body lower case 2 constituting the base body of the vacuum cleaner main body 1 has a hose connection port 201 provided at the tip, and a dust collection box that is located behind the hose connection port 201 and in which the dust collection box 3 is detachably attached. A mounting unit 202, an electric blower storage unit 203 that is positioned behind the dust box mounting unit 202 and stores the electric blower 4, and a battery pack 5 positioned under the electric blower storage unit 203 And a charging terminal accommodating portion 205 for installing a battery charging terminal, and the caster 6 installed on the bottom surface of the front portion and the wheels 7 installed on the lower portions of both side surfaces of the rear portion are supported so as to run. It is a configuration.

  The dust collection box mounting portion 202 is configured to be opened from above so that the dust collection box 3 can be attached and detached from above, and the hose connection port 201 is connected to the dust collection box mounting portion 202. The suction port is configured to communicate with each other.

  The dust collection box 3 includes a main dust collection means 301 located at the front stage, an auxiliary dust collection means 302 located at the rear stage, and a handle portion 303 protruding from the upper surface. As the main dust collecting means 301, a paper pack filter, a cloth bag filter, a cyclone type dust collector or the like can be used. In this embodiment, a cyclone type dust collector is adopted. Although not shown in the drawings, the cyclone type dust collector 301 includes the suction port on the front side and the discharge port on the rear side. Then, the auxiliary dust collecting means 302 is detachably installed at the rear side of the discharge port of the cyclone type dust collector 301. In this embodiment, the auxiliary dust collecting means 302 employs an auxiliary filter configured to bend the filter paper into a bellows shape to increase the ventilation area.

  The dust collection box 3 is configured to hold the handle 303 and attach / detach the dust collection box mounting portion 202. When the dust collection box 3 is attached to the dust collection box mounting portion 202, the main dust collecting means (cyclone type dust collector) is attached. ) The suction port 301 communicates with the hose connection port 201, and the discharge port communicates with the suction port of the electric blower 4 through the auxiliary filter 302.

  The electric blower 4 is constituted by a DC brushless motor using a rechargeable battery pack 5 as a power source and a centrifugal fan driven and rotated by the DC brushless motor, and sucks out air in the cyclone dust collector 301 through an auxiliary filter 302. Then, the air is exhausted into the electric fan housing 203. The decompressed cyclone type dust collector 301 sucks dust-containing air from the hose 13 (see FIG. 12) connected to the hose connection port 201, and centrifuges to collect dust.

  The upper half area of the electric blower housing portion 203 is surrounded by the main body upper case 8 and is configured to discharge the exhaust from the electric blower 4 to the outside from the exhaust window 801. The main body upper case 8 is attached with an arcuate handle 9 that undulates by turning around both ends engaged with the main body upper case 8 and a shoulder belt mechanism 10.

  The handle 9 covers the side periphery (side surface of the protruding portion) of the handle portion 303 protruding from the dust collection box 3 when the handle 9 is tilted, and exposes the side surface of the handle portion 303 when the handle 9 is raised. .

  The shoulder belt mechanism 10 will be described with reference to FIGS. The shoulder belt mechanism 10 includes a shoulder belt 1001, a shoulder pad 1002, a belt winding device 1003, and a swivel hook 1004 with a stopper.

  The shoulder belt 1001 is a woven fabric in which fibers are woven in a strip shape so as to be easily slipped in the length direction. In this embodiment, a woven fabric of PP (polypropylene) fibers was used.

  As shown in detail in FIGS. 9 to 11, the shoulder pad 1002 is a flat rectangular tube-shaped body through which the shoulder belt 1001 is inserted. The shoulder pad 1002 is flexible to fit the shoulder to be worn and slides on the shoulder belt 1001. Resin molded parts with excellent wear resistance and wear resistance. More specifically, the shoulder pad 1002 is a molded part using a hydrogenated liquid polymerization type SBR (styrene-butadiene rubber), and both end opening edges are excellent in wear resistance and shape retention. A flat rectangular annular reinforcing component 10021 using a member (for example, a PP molded member) is insert-molded and enclosed, and a groove 10022 transverse to the belt penetrating direction is formed in the intermediate portion to form a belt penetrating direction. It is configured to be easily bent so as to adapt to the curvature of the shoulder by increasing flexibility.

  As shown in detail in FIGS. 7 and 8, the belt winding device 1003 includes a spring provided as a winding spring in a belt winding box 10034 configured by combining a substrate 10032 on which a bearing mandrel 10031 is erected and an outer case 10033. A belt take-up reel 10036 to which a rotational force in the take-up direction is applied by a spring 1003 is accommodated and rotatably supported by the bearing mandrel 10031, and the shoulder belt wound around the winding body 10036a of the belt take-up reel 10036. The free end portion 1001 is led out from the belt entrance 10037 of the belt take-up box 10034, and the swivel hook 1004 is coupled to the tip through which the shoulder pad 1002 is passed.

  The belt take-up box 10034 is formed in a substantially square box shape that is flat in the axial direction of the bearing mandrel 10031 and is formed on the rear side of the main body upper case 8 constituting the rear side of the cleaner body 1. It is configured to be detachably mounted on the box fitting portion 802 so that the shaft center of the bearing mandrel 10031 faces the front-rear direction of the cleaner body 1 and is flat along the rear side surface of the upper case 8 of the main body. The belt doorway 10037 leads the shoulder belt 1001 unwound from the winding body 10036a of the belt take-up reel 10030 by twisting 90 degrees in the belt take-up box 10034 in a posture along the outer surface of the upper case 3 of the main body. As described above, a horizontally long rectangle along the outer surface of the main body upper case 8 is used. Such a structure of the belt take-up device 1003 (belt take-up box 10034) is effective in suppressing an increase in the dimension in the front-rear direction of the cleaner body 1 by attaching it to the cleaner body 1.

  A swivel hook 1004 coupled to the tip of the shoulder belt 1001 can be selectively hooked and engaged with the upper portion of the hose connection port 201 of the lower body case 2 and the upper portion of the front portion of the upper body case 8. Possible belt locking pins 11 and 12 are installed. Therefore, the belt locking pin 11 is positioned at the upper part of the substantially distal end portion of the cleaner body 1, and the belt locking pin 12 is positioned at the upper part of the substantially central portion of the cleaner body 1. The belt locking pins 11 and 12 are installed so as to be positioned in recessed portions 2011 and 803 formed in the upper portion of the hose connection port 201 and the upper portion of the front portion of the main body upper case 8, and are engaged with the swivel hook 1004 engaged. Reduce the amount of protrusion to the outside of the machine.

  The shoulder belt mechanism 10 has a belt winding device 1003 (belt winding box 10034) fitted to a winding box fitting portion 802 provided on the rear side surface of the upper case 8 and a swivel hook 1004 at the tip of the shoulder belt 1001. Is installed in a form engaged with the belt engaging pin 11 (12).

  When the shoulder belt 1001 is pulled out and used as shown in FIG. 12, the shoulder belt 1001 is pulled out from the belt take-up box 10034 by grasping and pulling the shoulder pad 1002 as shown in FIG. At this time, the belt take-up reel 1003 rotates so as to wind the mainspring 1003 and accumulates a reaction force (belt take-up force) in the mainspring 10034. This reaction force acts in the direction in which the cleaner body 1 in the landing state is lifted. Therefore, at this time, the spring winding force (reaction force) of the mainspring 1003 is not so large as to lift the vacuum cleaner main body 1 until all of the shoulder belt 1001 is unwound from the belt take-up reel 10036. A spring constant of 1003 is set.

  By setting the spring constant of the spring 1003 in this manner, the load in the process of pulling out the shoulder belt 1001 by grasping the shoulder pad 1002 and pulling it up, the belt winding force of the spring 1003 and the shoulder butt 1002. And the frictional resistance of the shoulder belt 1001. Therefore, when the shoulder belt 1001 is unwound, the spring spring 1003 has a sufficiently small force enough to wind the shoulder belt 1001 with the belt winding force accumulated in the spring 1003 free. By setting the spring constant small, the shoulder pad 1002 can be grasped with one hand and the shoulder belt 1001 can be pulled out with a small lifting force, and the frictional resistance due to the pressure contact between the shoulder pad 1002 and the shoulder belt 1001 is also small. In the process of pulling out the shoulder belt 1001 or after pulling out (before the vacuum cleaner body 1 is lifted), the vacuum cleaner body 1 can be suspended in an arbitrary posture (for example, a horizontal state as shown in FIG. 12). In addition, horizontal to the shoulder pad 1002 (direction parallel to the front-rear direction of the cleaner body 1) By applying a force can be easily slid shoulder against pad 1002 to a desired position of the shoulder belt 1001.

  Further, the frictional resistance when sliding the shoulder pad 1002 with respect to the shoulder belt 1001 is an annular shape at both ends of the opening edge of the shoulder pad 1002 where the shoulder belt 1001 is bent sharply by a load acting on the shoulder belt 1001. Although it occurs in a concentrated manner at the contact portion with the outer edge of the reinforcing member 10022, when the load acting on the shoulder belt 1001 is small, the frictional resistance generated by the bending of the shoulder belt 1001 is also small. Therefore, the shoulder pad 1002 can be easily slid, and the annular reinforcing member 10022 at the opening edge of the both ends of the shoulder pad 1002 can be configured simply.

  When the shoulder belt 1001 is lifted with a large force so that the cleaner body 1 is lifted by placing the shoulder pad 1002 on the shoulder, the entire load of the cleaner body 1 acts on the shoulder belt 1001, and the shoulder belt 1001. Is sharply bent at the position of the annular reinforcing member 10022 at the opening edge portions of the both ends of the shoulder pad 1002, and a large concentrated load is generated in the portion. In this state, since the frictional resistance generated between the shoulder belt 1001 and the shoulder pad 1002 is greatly increased, the shoulder pad 1002 is inclined so that the cleaner body 1 tilts due to the influence of the center of gravity of the cleaner body 1. On the other hand, the shoulder belt 1001 does not slide, and the cleaner body 1 can be held in a desired posture.

  When the shoulder belt 1001 is used by engaging the swivel hook 1004 coupled to the front end thereof with the belt engaging pin 11 provided above the hose connection port 201, the shoulder belt 1001 is coupled to the front end and the rear end of the cleaner body 1. The cleaner body 1 can be suspended and lifted and moved in a relatively stable posture. However, when the shoulder belt 1001 is wound around and stored in the belt winding device 1003 in this form, the shoulder belt 1001 lies in the front-rear direction in a form along the upper surface of the dust collection box 3, the main body upper case 8, and the handle 9. As a result, the raising / lowering operation of the handle 8 and the attaching / detaching operation of the dust collection box 3 become an obstacle. Accordingly, in a usage mode in which the handle 8 is frequently raised and lowered and the dust box 3 is frequently attached and detached, the swivel hook 1004 is provided so as to avoid the shoulder belt 1001 from lying on the dust box 3 and the handle 9. It is convenient to use it in the form of being engaged with a belt locking pin 12 provided in the upper part of the front part of the main body case 8.

  Further, when not being used so as to move (carry) on the shoulder, the swivel hook 1004 is detached from the belt engaging pin 11 (12), the belt take-up box 10034 is removed from the take-up box fitting portion 802, and the shoulder belt mechanism By setting 10 as the form removed from the cleaner body 1, the load when moving the cleaner body 1 can be reduced.

It is the external appearance perspective view which looked at the vacuum cleaner main body in the electric vacuum cleaner of Example 1 of this invention from front diagonally upward. FIG. 2 is an external perspective view of the vacuum cleaner main body in the electric vacuum cleaner according to the first embodiment of the present invention as viewed from the rear and obliquely above. It is the external appearance perspective view which looked at the vacuum cleaner main body in the vacuum cleaner of Example 1 of this invention from the side diagonally upward of the state which stood the handle. It is the external appearance perspective view which looked at the vacuum cleaner main body in the vacuum cleaner of Example 1 of this invention from the front diagonally upper direction of the state which raised the handle and removed the dust collecting case. It is a vertical side view of the cleaner main body in the electric vacuum cleaner of Example 1 of this invention. It is an external appearance perspective view which shows the whole shoulder-belt mechanism in the vacuum cleaner of Example 1 of this invention. It is a vertical side view of the belt winding apparatus of the shoulder belt mechanism in the electric vacuum cleaner of Example 1 of this invention. It is a vertical rear view of the belt winding apparatus of the shoulder belt mechanism in the electric vacuum cleaner of Example 1 of this invention. It is a vertical side view of the shoulder pad part of the shoulder belt mechanism in the electric vacuum cleaner of Example 1 of the present invention. It is a vertical front view of the shoulder pad part of the shoulder belt mechanism in the vacuum cleaner of Example 1 of this invention. It is a bottom view of the shoulder pad of the shoulder belt mechanism in the electric vacuum cleaner of Example 1 of the present invention. It is a side view which shows the state which pulled out the shoulder belt of the vacuum cleaner of Example 1 of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 2 ... Main body lower case, 201 ... Hose connection port, 202 ... Dust collection box mounting part, 203 ... Electric blower accommodating part, 204 ... Battery accommodating part, 205 ... Charging terminal accommodating part, 3 ... Dust collecting Box, 301 ... Main dust collecting means (cyclone dust collector), 302 ... Auxiliary dust collecting means (auxiliary filter), 303 ... Handle part, 4 ... Electric blower, 5 ... Battery pack, 6 ... Caster, 7 ... Wheel, 8 ... Upper body case, 801 ... Exhaust window, 802 ... Winding box fitting part, 9 ... Handle, 10 ... Shoulder belt mechanism, 1001 ... Shoulder belt, 1002 ... Shoulder pad, 10021 ... Annular reinforcement parts, 1003 ... Belt winding Take-up device, 10034 ... belt take-up box, 10033 ... mainspring spring, 1003 ... belt take-up reel, 1004 ... swivel hook, 11, 12 ... belt locking pin .

Claims (2)

A shoulder belt mechanism comprising a belt take-up reel to which a take-up force is applied by a take-up spring, a shoulder belt wound around the belt take-up reel, and a shoulder pad that slidably passes through the shoulder belt. In a vacuum cleaner that is attached to the vacuum cleaner body and can be lifted by a shoulder belt,
The take-up spring in the shoulder belt mechanism holds the vacuum cleaner main body until all of the shoulder belt is unwound from the belt take-up reel when the shoulder belt is pulled out of the belt take-up reel by grasping the shoulder pad and pulling it up. Set the spring constant so that the winding force is not large enough to float ,
Further, the shoulder belt mechanism includes a belt take-up box that houses the belt take-up reel and a take-up spring, and the take-up box rotatably supports the belt take-up reel by a bearing mandrel. A rectangular shape which is flat in the axial direction of the bearing mandrel, and is configured so that the shaft center of the bearing mandrel faces the front-rear direction of the cleaner body on the winding box fitting portion formed on the rear side of the cleaner body. A vacuum cleaner characterized by being configured to be detachably mounted in a posture that becomes flat along the rear side surface. A belt take-up reel to which a take-up force is applied by a take-up spring, a belt take-up device that houses a shoulder belt wound around the belt take-up reel, and a shoulder belt drawn from the belt take-up device can slide. In a vacuum cleaner in which a shoulder belt mechanism provided with a shoulder pad inserted in the body is attached to the main body of the vacuum cleaner and the vacuum cleaner main body can be lifted by the shoulder belt,
In the shoulder belt mechanism, the belt winding device is attached to the rear side portion of the cleaner body, and hooks coupled to the tips of the shoulder belts pulled out from the belt winding device are connected to the tip portion and the central portion of the cleaner body. Attach it to the main body of the vacuum cleaner by selectively engaging it with the belt locking pin provided at the top,
The take-up spring in the belt take-up device is a main body of the vacuum cleaner until all of the shoulder belt is unwound from the belt take-up reel when the shoulder belt is pulled out of the belt take-up reel by grasping and pulling up the shoulder pad. A vacuum cleaner characterized by setting a spring constant so as not to have a winding force large enough to float .

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