JPS6154409B2 - - Google Patents

Description

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

Generally, in a dust case with a bottom cover that can be opened and closed, it is necessary to grasp the dust case with one hand and remove the clamp on the bottom cover with the other hand when disposing of dust. In order to do so, the bottom cover must be closed by hand and then locked in the closed state with a clamp, which is a tedious and dirty operation. For this reason, the dust case is equipped with an opening/closing mechanism for the bottom cover, and when the dust case is operated in one direction, the bottom cover is released and rotated by its own weight in the opening direction, and when the dust case is operated in the other direction, the bottom cover is rotated in the closing direction. However, due to variations in each dimension, the stroke of the opening/closing mechanism and the stopping position in the closing direction are not constant, which causes the bottom cover and dust case to be closed in different dimensions, making it difficult to maintain airtightness, making it difficult to maintain airtightness. There are many obstacles.

The present invention provides a vacuum cleaner having such a bottom cover opening/closing mechanism, which can open and close the bottom cover with high accuracy and maintain good airtightness when closed, and the bottom cover can be operated without touching the bottom cover. To obtain an electric vacuum cleaner, in which the bottom cover can be opened and closed with one hand, and the operation for attaching and detaching the dust case to the main body case and the operation for opening and closing the bottom cover can be performed separately. The purpose is to

This invention includes a main body case containing an electric blower and a dust case with an opening formed on the bottom surface, and a fulcrum shaft and a pinion are coaxially fixed near one end of the bottom cover for opening and closing the opening of the dust case. the bottom cover is rotatably connected to the dust case by holding the fulcrum shaft on a holding piece formed on the dust case, and the operation part protrudes from the dust case near the handle thereof; This operating section is provided with an opening/closing mechanism consisting of a transmitting body connected via a spring so as to be movable up and down, and a rack that engages with the rear part of the pinion is attached to the lower part of the transmitting body of the opening/closing mechanism. It is characterized by being fixedly provided along the direction of movement. In other words, the bottom cover, which moves in a circular motion, is interlocked with each other due to the meshing action between the rack and pinion of the transmission body of the opening/closing mechanism, which moves linearly, but the pinion and rack transmit the movement at any meshing position of the transmission body. This allows the bottom cover to be firmly attached to the opening surface of the dust case, which enables smooth power transmission and improves airtightness.It also enables the stroke of the transmission body of the opening/closing mechanism to be expanded. The bottom cover can be opened wide, and the opening/closing mechanism is made by connecting an operating part with a locking part that locks onto the main case and a transmission body with a rack so that they can move up and down independently and in conjunction with each other. As a result, the operation section can be operated independently to attach and detach the dust case to the main case, and the operation section and the transmission body can be linked together to rotate the pinion and close the bottom cover.
The structure is such that the operation of opening the bottom cover by operating the lock operation part and operating the transmitting body independently can be performed very easily with only one hand holding the handle.

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. Next, a dust collection chamber 8 having a suction port 6 opening at the front and an opening 7 at the bottom surface.
A dust case 9 in which a dust case 9 is formed is removably attached to the main case 1. A filter unit 10 is detachably attached to the rear of the dust collection chamber 8, and a compression plate 11 for compressing dust is provided at the upper front part. Also, dust case 9
A gear 13 is provided on the partition wall 12 on the main body case 1 side.
A dust removal body 14 is provided which is connected to the cord reel 4 via a rotatable dust removal body 14. A bottom cover 15 is attached to the opening 7 of the dust case 9 so as to be openable and closable, and a packing 16 for maintaining airtightness with the bottom cover 15 is attached to the lower part of the dust case 9. At the rear end of the bottom cover 15, as shown in FIGS. 3 and 4, there is a protrusion 17 located in the center that protrudes downward, and a pair of hinge pieces 18 that are located on both sides and protrudes upward. are formed, and these hinge pieces 1
A pinion 19 and a fulcrum shaft 20 are fixed to the pinion 8 so that they do not rotate and are horizontally disposed coaxially. Both ends of these fulcrum shafts 20 respectively protrude, and a holding piece 21 that rotatably holds the fulcrum shafts 20 is formed on the partition wall 12 of the dust case 9 so as to protrude rearward. As shown in FIGS. 1 and 2, at the lower front of the main body case, there is a holding portion 22 that fits and holds the protrusion 17 of the bottom cover 15.
is formed, and one end of a protective cover 23 covering the lower surface of the bottom cover 15 is connected to a pin 2 at the base of the holding portion 22.
4, it is held movable up and down. A locking hole 25 is provided at the other end of the protective cover 23 and the lower front end of the dust case 9, and the locking hole 25 is removably locked to each other.
and a locking pawl 26 are formed, and wheels 27 are attached to the lower surface of the protective cover 23.
In front of it is a sled section 2 that gently bulges downward.
8 is formed. Further, a stopper 29 is formed on the holding portion 22 to restrict the downward rotation angle of the protective cover 23.

Next, an opening/closing mechanism 30 opens and closes the bottom cover 15.
is provided in the dust case 9. This opening/closing mechanism 30 protrudes upward from near a handle 31 formed at the top of the dust case 9 and is held movably up and down, and has a claw-like structure that engages with a locking hole 32 formed in the main body case 1. It has an operating part 34 having a locking part 33, and is connected by a compression spring 36 to an inverted U-shaped transmission body 35 located on the back side of the dust case 9 and formed from the upper part to the lower part. It is being formed. The shape of the transmission body 35 will be described in detail as shown in FIGS. 3 and 4.
As shown in the figure, it has leg portions 37 that extend downward, and the hinge piece 18 moves in and out of the lower end of these leg portions 37 when the bottom cover 15 rotates, and the bottom cover 1
A notch 38 is formed to allow the rotation of 5, and
As shown in FIG. 6, a rack 39 that meshes with the rear of the pinion 19 is formed vertically.
Further, as shown in FIG. 3, the transmission body 35 has a vertically long hole 41 which engages with a guide pin 40 installed horizontally on the dust case 9 and is held movable up and down in a vertical plane. is formed. As shown in FIG. 5, between the lower part of the operating part 34 and the upper part of the transmitting body 35, a lock operating part 42 which can be slid horizontally is biased in one direction by a compression spring 43. It is attached so that a portion thereof protrudes from the handle 31. This lock operation part 4
2 includes a claw 4 formed below the operating section 34.
4 to lock the upward movement of the operating part 43; and a lock part 45 that comes into contact with a claw 46 formed on the upper part of the transmission body 35 to lock the upward movement of the transmission body 35. A lock portion 47 is formed. Further, the locking portion 33 of the operating portion 34
is locked in the locking hole 32, and the operating portion 34 can be moved further downward from the position where the dust case 9 is connected to the main body case 1 (the position shown by the imaginary line in FIG. 5). A sliding portion 48 is formed on the lock operating portion 42.

Note that 49 is a compression spring that biases the transmission body 35 upward, and the bottom cover 1 is biased in the opening direction.
Since the transmitting body 35 rises in conjunction with the opening operation of 5, the compression spring 49 is auxiliary. Furthermore, as mentioned above, the position of the operating section 34 shown by the imaginary line in FIG. As shown in FIG. 1, a protrusion 50 that comes into contact with a contact portion (not shown) of the lock operating portion 42 is integrally formed with the operating portion 34.

In such a configuration, as shown in FIG. 1, when the operating part 34 is pressed with the dust case 9 and the main body case 1 combined, the operating part 34 descends independently and engages the locking part 33 and the locking hole. 32. In this state, the dust toy case 9 and main case 1 are opened in an inverted V shape as shown in FIG. Next, the protrusion 17 of the bottom cover 15 is removed upward from the holding part 22, and the locking piece 25 and the locking claw 26 are removed, thereby separating the dust case 9 from the main case 1.
In this state, the operating part 34 is released from the locking hole 32 of the main body case 1 and is moved to the fifth position by the force of the compression spring 36.
It rises to the solid line position in the figure and stops at the lock portion 45. Although this position is not shown in detail, the protrusion 50
is the position at which the lock operation section 42 is released. Therefore, when the lock operation part 42 is pressed in this state, the lock part 45 first releases the operation part 34, so the operation part 34 is urged by the compression spring 36 and rises, and the upper part of the transmission body 35 is fully pressed. form a space. The lock portion 47 then disengages from the pawl 46 to release the transmission body 35. As a result, the bottom cover 15 is biased in the opening direction (downward) by its own weight (or spring), so that the pinion 1
6 from the state shown in Fig. 6a to Fig. 6b while rotating
The transmission body 35 rotates to the state shown in FIG.
Since the rack 9 and the rack 39 are engaged with each other, it is assisted by the force of the compression spring 49 and rises. In this state, discard the dust inside the dust case 9. Next, when the operating part 34 is pressed, the operating part 34 moves the lock operating part 42 in the horizontal direction with its claw 44 and descends to increase the pressure of the compression spring 36, and the force of this compression spring 36 operates the transmission body 35. The claw 46 is interlocked with the part 34.
Then, the lock operation section 42 is further moved in the horizontal direction and lowered. This lowering causes the rack 39 to turn the pinion 19. Therefore, the bottom cover 15 rotates in the closing direction. At this time, since the wheels 27 are not attached to the bottom cover 15 and the bottom cover 15 is lightweight, only a small operating force is required. When the transmission body 35 is lowered to a certain position, it is disengaged from the pawl 46 and the lock operation part 42 is horizontally moved in the opposite direction by the force of the compression spring 43 to position the lock part 47 above the pawl 46. This locks the upward movement of the transmitting body 35 and keeps the bottom cover 15 closed. This prevents dust remaining in the dust case 9 from spilling when the dust case 9 is carried. Further, a lock portion 45 is positioned above the claw 44 of the operating portion 34 to lock the upward movement of the operating portion 34. Then, hold the protrusion 17 of the bottom cover 15 in the position shown in FIG.
and lock the dust case 9, the locking claw 26, and the locking hole 25 of the protective cover 23, and then
The dust case 9 and the main body case 1 are connected by rotating the dust case 9 about the pin 24 and locking the locking portion 33 of the operating portion 34 into the locking hole 32 of the main body case 1.

As described above, even if the stroke of the transmission body 35 varies due to the pinion 19 and the rack 39 being constantly engaged, the opening/closing operation of the bottom cover 15 can be performed by pressing down the operating part 34 greatly. can be brought into close contact with the packing 16 of the opening 7, and the movement between the bottom cover 15 and the transmitting body 35 is extremely smooth, and the linear momentum of the transmitting body 35 is expanded by the meshing of the rack 39 and the pinion 19. It can be transmitted to the lid 15. In particular, the operating section 3 has a locking section 33 that locks onto the main body case 1.
4 and a transmitting body 35 having a rack 39 are elastically connected by a compression spring 36 to constitute the opening/closing mechanism 30, so that the dust case 9 can be attached to and detached from the main body case 1 by operating the operating section 34 independently. a first operation to close the bottom cover 15, which is performed by interlocking the operation part 34 and the transmission body 35, and a second operation, which is performed by operating the lock operation part 42 to independently close the transmission body 35. The third operation of opening the bottom cover 15 can be performed very easily with only one hand holding the handle 31.

Furthermore, the operating part 34 is limited by the stroke length within the locking hole 32 when engaging and disengaging from the main body case 1; however, when the dust case 9 is separated from the main body case 1, the lock operating part 42, the operating part 34 can be raised to increase the space in the opening direction of the transmission body 35, and the sliding part 48 of the lock operating part 42 can lower the operating part 34 when closing the lid. The stroke can be increased, therefore, the operating part 4
Although 2 requires only a small stroke when engaging and disengaging from the main body case 1, a reasonable stroke can be obtained when opening and closing the bottom cover 15,
Thereby, the bottom cover 15 can be opened and closed more widely and smoothly.

Note that during use, the wheels 27 vibrate when running on the bottom, but since the wheels 27 are attached to the protective cover 23 that covers the bottom lid 15, the wheels 27 vibrate when traveling on the bottom.
No vibration is transmitted to the sealing surface of the door, so even if you run over a sill, no dust will spill out due to the vibration.

Since this invention is constructed as described above, the transmission body of the opening/closing mechanism having a rack and moving linearly and the bottom cover having a pinion and moving circularly are interlocked with each other by meshing with each other by the rack and pinion. but,
The pinion and rack are in a relationship that transmits motion to each other at any meshing position, and the bottom cover can be reliably brought into close contact with the opening surface of the dust case.
Power transmission is smooth and airtightness can be improved, and the stroke of the transmission body of the opening/closing mechanism can be expanded to open the bottom cover widely.
Since the opening/closing mechanism is made up of a spring that connects an operation part with a locking part that locks onto the main case and a transmission body with a rack so that they can move up and down independently, the main case can be operated independently. The operation of attaching and detaching the dust case, the operation of interlocking the operation section and the transmission body to rotate the pinion and closing the bottom cover, and the operation of operating the lock operation section to operate the transmission body independently. The operation of opening the bottom cover can be performed extremely easily with only one hand holding the handle.

[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 partially cutaway side view showing the attachment and detachment of the dust case and main case, Figure 3 is a rear view of the dust case, and Figure 4 is a side view with a part cut away.
The figure is a partially cutaway exploded perspective view showing the attachment relationship between the dust case and the transmission body of the bottom cover, and Figure 5 is a partially enlarged longitudinal section showing the attachment relationship between the operating section, the transmission body, and the lock operation section. The rear view and FIG. 6 are longitudinal sectional side views showing an enlarged view of the meshing action between the rack and the pinion. 1...Main case, 2...Electric blower, 7...
Opening, 9...Dust case, 15...Bottom cover, 19
... Pinion, 20 ... Fulcrum shaft, 21 ... Holding piece, 30 ... Opening/closing mechanism, 31 ... Handle, 33 ...
Locking part, 34... Operating part, 35... Transmission body, 36
...Compression spring (spring), 39...Lack, 42...
...Lock operation section, 45, 47...Lock section, 48
...Sliding part.

Claims (1)

[Scope of Claims] 1. A main body case containing an electric blower and a dust case with an opening formed on the bottom surface are provided, and a fulcrum shaft and a pinion are coaxially arranged near one end of the bottom cover for opening and closing the opening of the dust case. Fixed on top and installed horizontally,
The fulcrum shaft is held by a holding piece formed on the dust case, and the bottom cover is rotatably connected to the dust case, and an operating part protrudes from the dust case near the handle thereof, and the operating part is An opening/closing mechanism consisting of a transmitting body connected via a spring and biased in the return direction is provided so as to be movable up and down, and a rack that engages with the rear part of the pinion is provided at the lower part of the transmitting body of this opening/closing mechanism. A vacuum cleaner characterized by being fixedly installed along the direction of movement of the body. 2 A main body case containing an electric blower and a dust case with an opening formed on the bottom surface are provided, and a fulcrum shaft and a pinion are fixed coaxially near one end of the bottom cover of the dust case that opens and closes the opening. established,
The fulcrum shaft is held by a holding piece formed on the dust case, and the bottom cover is rotatably connected to the dust case, and the dust case has an engagement that protrudes near the handle and engages with the main body case. An opening/closing mechanism is provided which is movable up and down and includes an operating part having a stop part and a transmitting body which is connected to the operating part through a spring and which is biased in the return direction. A rack that engages with the rear part of the pinion is fixedly provided along the moving direction of the transmission body, and a rack that is located in the dust case between the operating part and the transmission body and moves upwardly of the transmission body. a lock portion that locks the operation of the operating portion; a lock portion that locks the upward movement of the operating portion; and a lock portion that locks the upward movement of the operating portion; and a lock portion that locks the upward movement of the operating portion; 1. A vacuum cleaner characterized in that a lock operation part having a sliding part that allows the movement of the vacuum cleaner is mounted so as to be movable in the horizontal direction.