JPS6154408B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vacuum cleaner.

For dust cases with bottom lids that can be opened and closed, it is necessary to grasp the dust case with one hand and unclamp the bottom lid with the other hand when disposing of dust. The lid must be closed by hand and then locked in the closed state with a clamp, which is a cumbersome operation because the hands are dirty and the lid must be done in a posture that looks up from below at the clamp provided on the dust case. In addition, models with a rotatable bottom cover are equipped with an operating part that presses the opposite side of the free rotation side around the pivot point, and by operating the operating part, the bottom cover can be moved under its own weight. It is conceivable to open the bottom cover with the handle or close it with the operating part, but as mentioned above, providing a clamp to lock the free rotating end of the bottom cover is cumbersome to open and close, and if the clamp is omitted, the free rotating end will be closed. It has the disadvantage that the airtightness is impaired.

A first object of the present invention is to allow the bottom cover to be opened and closed with one hand and to prevent the bottom cover from opening even if the operating section is touched carelessly.

A second object of the present invention is to facilitate the rotational movement for opening and closing the bottom cover and the horizontal movement for engaging and disengaging the bottom cover with the locking portion when closing or opening.

A third object of the present invention is to prevent the bottom cover from opening even if an external force is applied to the bottom cover.

An embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a main body case that houses an electric blower 2 and a cord reel 4 around which a cord 3 is wound, and has wheels 5 on both sides of the lower part. Next, a dust case 9 is provided in which a suction port 6 and a dust collection chamber 8 having an opening 7 on the lower surface are formed. Dust collection chamber 8
A filter unit 10 and a compression plate 11 that moves up and down while being urged upward are provided. In addition, on the partition wall 12 on the exhaust side of the dust case 9,
A dust removal body 14 is provided which rotates by inheriting the rotation of the cord reel 4 via a gear 13, and a packing 16 is provided surrounding the dust removal body 14 and joined to a partition wall 15 on the suction side of the main body case 1. It is being A packing 17 is also attached to the opening edge of the dust case 9. A through hole 18 is formed in the partition wall 15 of the main body case 1, a through hole 19 is formed in the dust removal body 14 (FIG. 2), and a through hole is also formed in the partition wall 12 of the dust case 9 (not shown). is formed. A bottom cover 21 is provided to which a turning wheel 20, which is a wheel, is attached. Near one end of the bottom cover 21 on the exhaust side, as shown in FIG. A pinion 23, a fulcrum shaft 24, and a locking protrusion 25 protruding downward from the center are formed. A U-shaped holding part 26 is formed on both sides of the lower part of the partition wall 12 of the dust case 9 to hold the fulcrum shaft 24 so as to be rotatable and to slide within a certain range in the horizontal direction. . Further, on the lower suction side of the dust case 9, as shown in FIG. It is formed. Further, a recess 28 is formed on the upper surface of the bottom lid 21 and has a depth a, which approaches the substantially inside side of the exhaust side of the packing 17. However,
The dust case 9 is configured such that the locking protrusion 25 of the bottom cover 21 is fitted into a fixed locking portion 29 formed at the bottom of the main body case 1 to prevent movement in the front-rear direction. It is connected to the main body case 1 by locking the latch portion 32 of the movable locking body 31 provided nearby into the locking hole 33 of the main body case 1. A transmission body 34 is provided that moves up and down along the partition wall 12 of the dust case 9. This transmission body 34 has a pair of left and right legs 35 as shown in FIGS. 2 and 3, and these legs 35
A slit-like notch 36 for allowing the hinge piece 22 of the bottom cover 21 to go in and out, and a long hole 37 for holding both ends of the fulcrum shaft 24 rotatably and relatively movably up and down are formed in the bottom cover 21. A slope 38 that slopes toward the partition wall 12 as it goes upward is formed in the upper part of the elongated hole 37 . In addition, these legs 3
A rack 39 is formed on the inner surface of the pinion 5, as shown in FIG. 8, and engages the pinion 23. On the upper side of this rack 39, there is a slope 4 that abuts against a slope 40 formed on the outer periphery of the pinion 23 where no teeth are formed, and presses the fulcrum shaft 24 toward the partition wall 12 when the pinion 23 comes into contact with the slope 40.
1 is formed.

Therefore, the transmitting body 34 converts the linear motion into a rotational motion of the bottom cover 21 and transmits force to the bottom cover.

Next, the exhaust side of the handle 30 of the dust case 9 is covered with a plate 42 as shown in FIG.
The upper part of the movable locking body 31 protrudes while being biased upward by a compression spring 44, and the upper end thereof and the movable locking body 31 are elastically connected with a compression spring 45 interposed therebetween.
Therefore, both have a range of independent movement and are interlocked. Further, in the internal space 43 near the handle 30, an operating section 46 is provided so as to be slidable in the left and right directions while being biased in the return direction by a compression spring 47. As shown in FIGS. 4 to 7, the movable locking body 31
The lock portion 49 is a protrusion that locks into a recess 48 formed at the upper center of the operation portion 46 when the operation portion 46 is engaged with the locking hole 33 of the main body case 1 to lock the sliding movement of the operation portion 46, and a claw. 50 are formed. The operating portion 46 also includes a claw 51 that engages with the upper side of the claw 50, a lock portion 53 that engages with the upper surface of the claw 52 of the transmission body 34 to lock its movement in the opening direction (upward), and a lock portion 53 that engages with the upper side of the claw 50. A pressing portion 55 is formed which comes into contact with and scoops up the claw 54 of the transmission body 34 by the pushing operation of the portion 46 .

In such a configuration, when the movable locking body 31 is locked in the locking hole 33 of the main body case 1, the movable locking body 31 is in the state shown by the imaginary line in FIG. 4, and as shown in FIG. In this case, the lock portion 49 protrudes into the recess 48 and prevents the operating portion 46 from sliding. When the movable locking body 31 is pushed to separate the dust case 9 from the main body case 1, the movable locking body 31 is moved by the force of the compression spring 45 and its claw 5
0 rises until it comes into contact with the claw 51 of the operating portion 46 (FIG. 4), and the locking portion 49 retreats from the recess 48 to release the operating portion 46. The bottom cover 21 is pressed against the packing 17 by a locking part 27, and the bottom cover 21
Although the gravity of the turning wheel 20 does not act as a driving force for the opening operation, when the operating section 46 is pressed,
First, the claws 50 and 51 shown in FIG. 4 come off and the movable locking body 31 retreats further upwards by the force of the compression spring 45. Then, the locking part 53 releases the transmission body 34, and the transmission body 34 is compressed. It increases due to the force of the spring 44 and the pressing force of the pressing part 55 of the operating part 46. When the amount of pressure reaches T, it means that the transmitting body 34 has risen from the position shown in FIG. 8a to the position shown in FIG. It slides by a dimension t along the holding part 26 together with the pinion 23 and the bottom cover 21. That is, the free rotation end of the bottom cover 21 is released from the locking part 27. At this time, since the bottom cover 21 is quickly separated from the packing 17 due to the formation of the recess 28 as shown in FIG. 8b, the force required to slide the bottom cover 21 is small. This allows the bottom cover 21 to be brought into pressure contact with the packing 17 with a strong force when the cover is closed, thereby improving sealing performance. In this way, after the bottom cover 21 and the locking part 27 are disengaged, the bottom cover 21 is urged in the opening direction by its own weight and the weight of the turning ring 20, so it cannot rotate about the holding part 26 as a fulcrum. , the pinion 23 meshes with the rack 39 as shown in Fig. 8c.
The bottom cover 21 is rotated through the position shown in FIG. 8 to the position shown in FIG. 8d. In this process, the transmission body 34 is connected to the movable locking body 31.
It works independently and is not linked to. When the movable locking body 31 is pressed while the lid is opened and the dust is thrown away, the force of the compression spring 45 increases, and the transmission body 34 is moved down. Therefore, the bottom cover 21 is rotated in the closing direction by an operation opposite to the opening operation, and the dust case 9 is closed.
After being joined to the packing 17 of the connector, the connector is slid forward (to the left in FIG. 1) while maintaining the joined state, and is locked to the locking portion 27. In this state,
The movement of the transmitting body 34 in the opening direction is locked unless the operating part 46 is pressed, and the downward movement of the transmitting body is locked by the joining of the slopes 40 and 41 as shown in FIG. 24 is also pressed in the direction of increasing the amount of overlap (t) between the bottom cover 21 and the locking part 27, so the bottom cover 21 has a high airtightness and is securely locked, preventing dust remaining in the dust case 9 from spilling. To prevent. This series of operations is performed in dust case 9.
A movable locking body 31 and an operating section 46 are located near the handle 30 of the
, the main body case 1 and the dust case 9 can be attached and detached, and the bottom cover 21 can be opened and closed easily with one hand, even if the stroke between the movable locking body 31 and the transmission body 46 is small. 39 and the pinion 23, the bottom cover 21 can be opened and closed widely. That is, the pressing force of the bottom cover 21 against the packing 17 is sufficient, the airtightness is improved, and the amount of protrusion of the movable locking body 31 is also reduced, thereby improving the aesthetic design. In addition, the bottom cover 21 is
6 and the locking portion 27, it will not open or lose its airtightness even if it is biased in the opening direction and receives pressure from the compression plate 11 during dust compression. And the locking protrusion 25 of the bottom cover 21
is fitted into the fixed locking part 29 of the main body case 1, and the movable locking body 31 is pushed and locked in the locking hole 33, thereby connecting the main body case 1 and the dust case 9. This state is as shown in FIG. The movable locking body 31
The lock portion 49 locks the sliding movement of the operating portion 46, and therefore, in this state, a force in the longitudinal direction is applied to the bottom cover 21 due to the frictional force between the swing ring 20 and the bottom surface. The fulcrum shaft 24 of the bottom cover 21 is prevented from moving back and forth by the long hole 37 of the locked transmission body 34, and the free end edge of the bottom cover 21 abuts the locking part 27, and is not locked. The protruding portion 25 is prevented from moving back and forth by the fixed locking portion 29, so that the bottom cover 21 and the locking portion 27 will not come unwrapped. This locking protrusion 25 is a fixed locking portion 29
Since the dust case 9 is surrounded by the main body case 1, the design beauty is not impaired, and since it is opened when the dust case 9 is separated from the main body case 1, opening and closing operations of the bottom cover 21 are not complicated.

Since the present invention is configured as described above, by providing a movable locking body and an operation part near the handle of the dust case, it is possible to attach and detach the dust case and the main case, carry the dust case, and open and close the bottom cover. can be done with one touch with one hand, in this case,
The power transmission for opening and closing the bottom cover is performed by converting linear motion and rotational motion using the transmission body and the fulcrum shaft, so even if the stroke between the movable locking body and the transmission body is small, the bottom cover can be opened and closed widely. can be made,
This improves the sealing performance of the opening edge of the dust case, reduces the amount of protrusion of the movable locking body from the dust case, and improves the aesthetics of the design. Since the operation part is locked by the lock part of the movable locking body, the bottom cover will not open even if you touch the operation part carelessly, making it safe, and the fulcrum shaft of the bottom cover is , is held in the elongated hole of the transmission body, and is guided by the slope of the elongated hole and deflected at the beginning of the movement of the transmission body in the opening direction, so that the bottom cover slides in the plane direction and engages the locking part of the dust case. The bottom cover rotates after it comes off, allowing you to open and close the bottom cover with one touch without complicating the process.Furthermore, by attaching wheels to the bottom cover, the gravity of the wheels can be used to reduce the operating force when opening the cover. The force acting on the wheels during use acts on the bottom cover as an external force along its plane, but the locking protrusion on the bottom cover can be locked in an enclosed state by the fixed locking part on the main body case. This prevents the free rotating end of the bottom cover from falling off from the locking part of the dust case, and as a result, even if an external force is applied to the bottom cover, the bottom cover will not open. It has the following.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention.
The figure is a partially cutaway side view, Figure 2 is a rear view of the dust case, and Figure 3 is a partially cutaway exploded perspective view showing the support structure between the dust case and the bottom cover and the relationship with the transmission body. Fig. 4 is an enlarged longitudinal cross-sectional rear view of a part of the dust case showing the relationship between the movable locking body, the operating section, and the transmitting body, and Fig. 5 is an enlarged view of the mounting relationship between the movable locking body and the operating section. 6 is a plan view thereof, FIG. 7 is a longitudinal side view thereof, and FIG. 8 is a partially enlarged longitudinal side view showing the meshing action of the rack and pinion. 1... Main body case, 2... Electric blower, 7...
Opening, 9... Dust case, 20... Swivel wheel (wheel), 21... Bottom cover, 24... Fulcrum shaft, 25...
Locking protrusion, 26... Holding part, 27... Locking part, 2
9...Fixed locking portion, 30...Handle, 31...Movable locking body, 34...Transmission body, 37...Long hole, 38...
... slope, 46 ... operating section, 49 ... locking section of movable locking body, 53 ... locking section of operating section.

Claims (1)

[Scope of Claims] 1. A main body case containing an electric blower and a dust case having an opening formed on the lower surface are provided, and a bottom cover for opening and closing the opening of the dust case is provided to be biased in the opening direction, and the bottom cover is biased in the opening direction. A fulcrum shaft is fixedly provided at one end of the lid, the fulcrum shaft is rotatably connected to a holding part provided on the dust case so as to be freely movable in the front and back direction, and the fulcrum shaft is connected to a holding part provided on the dust case so as to be movable in the front and back directions, and A movable locking body that is removably locked to the main body case is provided, a transmission body that moves up and down along a partition wall formed at the rear of the dust case is provided, and a long hole is formed in the transmission body in the vertical direction. the fulcrum shaft is rotatably and relatively movable up and down in the elongated hole;
The transmission body and the movable locking body are provided spaced apart from each other on the same axis, and a compression spring is interposed between the transmission body and the movable locking body, and the handle of the dust case is provided with a compression spring. a horizontally slidable operating section biased in the return direction is provided in the vicinity, and a locking section is formed on the movable locking body to lock the sliding movement of the operating section at a locking position with the main body case; A vacuum cleaner characterized in that the operating section is provided with a locking section that locks the operation of the transmitting body in the opening direction. 2. A main body case containing an electric blower and a dust case with an opening formed on the bottom surface are provided, a bottom cover for opening and closing the opening of the dust case is biased in the opening direction, and a fulcrum shaft is attached to one end of the bottom cover. is fixedly provided, and this fulcrum shaft is connected to a holding part provided on the dust case so as to be rotatable and movable in the front and back direction, and the bottom cover is rotated by the horizontal movement of the bottom cover on the dust case. A locking part is formed that engages and disengages from the lower surface of the free end side, and the dust case is provided with a movable locking body that is located near the handle of the dust case and detachably engages with the main body case. A transmitting body that moves up and down along a partition wall formed at the rear is provided, and a long hole is formed in this transmitting body that is long in the vertical direction and has a slope at the top that slopes toward the partition wall. The fulcrum shaft is fitted into the hole so as to be rotatable and relatively movable up and down, and the transmission body and the movable locking body are provided spaced apart from each other on the same axis, and the transmission body and the movable locking body are provided spaced apart from each other on the same axis. A compression spring is interposed between the movable locking body and a horizontally slidable operating section near the handle of the dust case to urge the movable locking body in the return direction. A vacuum cleaner characterized in that a lock part is formed to lock the sliding movement of the operating part at a locking position with the operating part, and a lock part is formed in the operating part to lock the movement of the transmitting body in the opening direction. . 3. A main body case containing an electric blower and a dust case with an opening formed on the bottom surface are provided, a bottom cover for opening and closing the opening of the dust case is biased in the opening direction, and a fulcrum shaft is attached to one end of the bottom cover. is fixedly provided, and this fulcrum shaft is connected to a holding part provided on the dust case so as to be rotatable and movable in the front and back direction, and the bottom cover is rotated by the horizontal movement of the bottom cover on the dust case. A locking part is formed that engages and disengages from the lower surface of the free end side, and the dust case is provided with a movable locking body that is located near the handle of the dust case and detachably engages with the main body case. A transmitting body that moves up and down along a partition wall formed at the rear is provided, and a long hole is formed in this transmitting body that is long in the vertical direction and has a slope at the top that slopes toward the partition wall. The fulcrum shaft is fitted into the hole so as to be rotatable and relatively movable up and down, and the transmission body and the movable locking body are provided spaced apart from each other on the same axis, and the transmission body and the movable locking body are provided spaced apart from each other on the same axis. A compression spring is interposed between the movable locking body and a horizontally slidable operating section near the handle of the dust case to urge the movable locking body in the return direction. A locking portion is formed to lock the sliding movement of the operating portion at a locking position with the bottom cover, a locking portion is formed on the operating portion to lock the movement of the transmitting body in the opening direction, and a wheel is attached to the bottom cover. At the same time, a locking protrusion is formed on the lower surface of the lid on the fulcrum shaft side,
A vacuum cleaner characterized in that a fixed locking part is formed in the lower part of the main body case to prevent horizontal movement of the bottom cover by fitting and holding the bottom cover in a state surrounding the locking protrusion.