JP2565215Y2 - Elevating operation mechanism such as counter - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a lifting operation mechanism such as a counter which is attached to a counter provided with a price reading device in a large-scale retail store and operates a handle device to rotate an operation shaft to raise and lower a top plate. About.

[0002]

2. Description of the Related Art Conventionally, in a store such as a supermarket, an optical price reader (stationary scanner) for reading a bar code attached to a product is mounted on a work table of a counter. Since the height of the tabletop (workbench) affects the fatigue of the worker, the counter is operated in accordance with the height of the worker by operating the handle device to operate the lifting / lowering operation mechanism and attach the workbench to the workbench. Is raised and lowered. Then, while working on the counter, the handle device protruding from the front is removed and stored in a predetermined place. Further, the allowable rotation range of the handle device is limited so that the handle device cannot rotate beyond the range of movement of the top plate. In the first conventional example, the fixed portion of the counter and the work table which moves up and down are connected by a chain corresponding to the moving distance so that the work table does not move up and down more than the length of the chain. In addition, the second conventional example, that is, 3-2
In the counter having a lifting function disclosed in Japanese Patent No. 7653, a male screw 3 is formed on an operation shaft 2 rotated by a handle device 1 as shown in FIG.
, A nut 5 is fixed at a position corresponding to a moving range of a top plate (not shown) on the operation shaft 2. When the handle device 1 is operated, the female screw 4 moves in accordance with the rotation of the operation shaft 2, and when the top plate reaches the limit of the movement range, the female screw 4 comes into contact with the stator 5. The rotation of the handle device 1 is prevented.

[0003]

The lifting operation mechanism such as the above-described counter has the following problems. That is, (1) the handle device 1 is mounted when the top plate is raised and lowered, and when the lifting operation is completed, the handle device 1 must be removed and stored, which is extremely troublesome. Especially,
If the previous worker has stored the handle device 1 in a place different from the predetermined place, the handle device 1 has to be searched, which is too late for an urgent case. (2) The handle device receives an impact at the upper and lower limits of the range of movement of the tabletop. That is, when the handle device is rapidly rotated near the upper and lower limits of the range of movement of the top plate, the first
In the conventional example, since a large inertia of the moving work table is suddenly stopped by a chain connected thereto, the impact is very large. Also in the second conventional example, since the moving speed of the female screw 4 is high, the hand holding the handle device 1 may be numb by the impact when the female screw 4 collides with the nut 5.
The present invention has been made in view of the above-mentioned circumstances, and its purpose is to eliminate the protruding portion on the front with a simple operation, so that it is not necessary to remove the handle device, and also to the moving range of the top plate. An object of the present invention is to provide an elevating operation mechanism such as a counter capable of detecting an operation range of a corresponding handle device and ending the operation without impact.

[0004]

According to a first aspect of the present invention, there is provided an elevating operation mechanism such as a counter for operating a handle device attached to a counter to rotate an operation shaft to raise and lower a top plate. A handle that is always urged to protrude in a direction perpendicular to the rotating surface of the device is slidably provided, an engaging portion is formed on the inner end side of the handle, and the handle is pushed into the handle device. The present invention is characterized in that a ratchet device is provided for alternately holding or releasing the locking portions to alternately hold or protrude the handle. According to a second aspect of the present invention, there is provided an elevating operation mechanism such as a counter for operating a handle device attached to a counter to rotate an operation shaft to raise and lower a top plate, wherein the operation shaft corresponds to an upper limit of a moving range of the top plate. The upper limit stator is fixed at a position corresponding to the lower limit of the moving range and the lower limit stator is fixed at a position corresponding to the lower limit of the moving range, and a mover that moves between the two stators according to the rotation of the operation shaft is provided. And a control device comprising an elastic buffer member that is interposed between the upper stator and the lower stator and is compressed by the movable member when the top plate reaches the upper limit of the movable range or the lower limit of the movable range. It has features in the place where it is provided. According to a third aspect of the present invention, there is provided an elevating operation mechanism such as a counter for operating a handle device attached to a counter to rotate an operation shaft to elevate and lower the top plate, wherein the handle device is provided in a direction orthogonal to a rotation surface of the handle device. A handle that is always urged to protrude is slidably provided, and a locking portion is formed on the inner end side of the handle, and the locking portion is alternately held when the handle is pushed into the handle device. Or, a ratchet device is provided which is released to alternately house or protrude the handle, and an upper limit stator is fixed to the operation shaft at a position corresponding to an upper limit of the moving range of the top plate, and a lower limit of the moving range is provided. A lower limit stator is fixed at a position corresponding to the above, and a mover that moves between the two stators according to the rotation of the operation shaft is provided, and an intermediate member is provided between the mover and the upper and lower stators, respectively. Before being dressed The top plate has a characterized in that provided by the control device consists of an elastic buffer member is compressed by the moving element when reaching the lower limit of the upper or moving range of the moving range.

[0005]

According to the lifting operation mechanism such as the counter of the first aspect, when the handle of the handle device is pushed into the handle device, the ratchet device holds the locking portion and the handle is stored in the handle device. In addition, there is no protrusion on the front surface of the handle device, which does not hinder the operation of the counter. When the handle is pushed again into the handle device, the ratchet device opens the locking portion and the handle projects in a direction perpendicular to the rotation surface of the handle device, so that the handle device can be easily operated. According to the elevating operation mechanism such as the counter of claim 2, when the handle device is operated and the top plate reaches the upper limit of the moving range or the lower limit of the moving range, the elastic buffer member of the control device is compressed by the moving element, The operation of the handle device gradually becomes heavier, and it is detected that the top plate has reached the upper limit or the lower limit of the movement range, and the operation can be ended without impact. According to the raising / lowering operation mechanism such as the counter of claim 3, when the handle of the handle device is pushed into the handle device, the handle is alternately housed in the handle device and protruded from the handle device. In the housed state, there is no protrusion on the front of the handle device,
It does not interfere with the work of the counter. In the protruding state, the handle device can be easily operated. Further, when the top plate reaches the upper limit of the movement range or the lower limit of the movement range by operating the handle device, the elastic cushioning member of the control device is compressed by the moving element, and the operation of the handle device gradually becomes heavy. It is detected that the plate has reached the upper limit or the lower limit of the movement range, and the operation can be ended without impact.

[0006]

1 to 6 show an embodiment of the present invention.
This will be described with reference to FIG. First, in FIG.
1, a work table 13 is provided on the base 12 so as to be vertically movable, and a top plate 14 is attached to an upper surface of the work table 13. An optical payment reader (fixed scanner) 15 is placed at the center rear of the worktable 13, and a handle device 1 is provided.
6 is provided on the front surface of the worktable 13. Next, FIG.
5 and FIG. 5, the base 12 has two cylindrical vertical frames 17.
An upper frame 18 and a lower frame 19 are connected to each other, and a guide plate 20 is attached to a side portion of the vertical frame 17 and a leg 21 is attached to a lower end portion. The elevating frame 22 attached to the inner surface of the worktable 13 is provided so as to cover the base 12, and is attached to the base 12 by a guide 23 having a ball 23 a interposed between the base 12 and the lift frame 22. It is configured to be able to move up and down.

Here, the rotation transmission path of the lifting operation mechanism will be described with reference to FIG. That is, the handle device 1
6 is attached to the operation shaft 24, and the handle device 1
6, the operating shaft 24 is rotated, and the gear 27 attached to the shaft 26 via the gear 25 attached thereto.
Is rotated. A worm 28 is attached to the shaft 26, and the rotation of the worm 28 causes the worm wheel 30 attached to the pinion shaft 29 to rotate. A transmission mechanism 31 is constituted by the gear 25, the gear 27, the worm 28, and the worm wheel 30.

The pinion shaft 29 is rotatably supported at both ends by bearings 32, 32 (only one is shown) attached to the lifting frame 22, and has two pinions 33, 3 at both ends.
3 is attached. A rack 34 is engaged with each of the two pinions 33. This rack 34
Is in the front-back direction (left-right direction in FIG. 4)
A long slot 34a is formed. This rack 34
Are inserted into two support pieces 35, 35 respectively attached to the upper frame 18 and the lower frame 19 of the base 12, and the pins 3
6 is attached so as to be immovable in the vertical direction and slightly movable in the front-rear direction. A shaft portion 37 parallel to the pinion shaft 29 is attached to the elevating frame 22, and a cylindrical contact member 38 is rotatably attached to the shaft portion 37. The outer peripheral portion of the abutting member 38 abuts against the back surface of the rack 34, and always maintains the meshing state between the rack 34 and the pinion 33 optimally. The lifting frame 22
A gas spring 39 is mounted between the base and the base 12 to support the weight of the top plate 14.

Next, the lifting operation mechanism will be described with reference to FIGS. The handle device 16 includes a turntable 40
A mounting plate 41 is attached to the inner surface of the
4 is fixed. A tubular portion 42 is attached to the outer peripheral edge of the mounting plate 41 in a direction perpendicular to the rotating surface of the turntable 40. A handle 43 and a shaft 44 connected to the handle 43 are slidable in the tubular portion 42. Has been inserted. This cylindrical portion 42
A spring 45 is interposed between the handle 43 and the shaft 44.
Are urged to protrude from the turntable 40 by the elastic force of the spring 45. Further, a spherical locking portion 46 is formed at the tip of the shaft 44. Ratchet device 47
Is a case 49 having a storage portion 48, two holding pieces 50 having a concave portion 50 a at the distal end pivotally supported at a base end thereof and entering and leaving the storage portion 48, and a base of the holding piece 50. A well-known ratchet 51 with a heart cam attached to the end
It is composed of

The operating shaft 24 includes the lifting frame 22 and the frame 1
A male screw 53 is formed by bearings 52, 52 attached to 6a. The moving element 54 moves on the male screw portion 53 in accordance with the rotation of the operation shaft 24, and includes a nut 55 screwed to the male screw portion 53 and a rotation prevention fixed to the nut 55 to prevent the rotation. And a plate 56. Upper limit stator 5 fixed to male screw portion 53
The lower limit stator 7 and the lower limit stator 58 are located on both sides of the mover 54, and correspond to the upper limit or the lower limit of the range of movement of the table 14, respectively. The elastic cushioning member 59 is composed of washers 61 disposed at both ends of an elastic body 60 made of, for example, elastic rubber, and includes an upper stator 57 and a lower stator 5.
8 are interposed between the movable elements 54 so as to be in contact with the movable elements 8. The control device 62 is composed of the moving member 54, the upper limit stator 57, the lower limit stator 58, and the elastic cushioning member 59.

Next, the operation of the above configuration will be described. Generally, when working at the counter, the handle device 16 is not operated, so that the handle 43 is stored in the handle device 16. That is, when the handle 43 is pushed into the handle device 16, the locking portion 46 pushes the holding piece 50 into the storage portion 48. Here, the ratchet portion 51 operates to hold the holding piece 50 in the storage portion 48. The two holding pieces 50 are closed in the storage portion 48 and hold the locking portions 46 in the concave portions 50a. Then, the handle 43 is housed in the cylindrical portion 42 of the handle device 16 (indicated by a two-dot chain line in FIG. 1), and there is no protrusion on the front surface of the turntable 40.

When the top plate 14 is to be lifted, when the handle 43 is pushed into the handle device 16 again from the above-described state, the locking portion 46 pushes the holding piece 50 in the storage portion 48. Thereby, the ratchet part 51 operates,
The holding piece 50 is released from the storage section 48. Holding piece 50
When the user gets out of the storage part 48, the tip part opens as shown by the solid line, and the concave part 50a releases the locking part 46. And
The handle 43 is urged by the elastic force of the spring 45 and protrudes from the turntable 40.

[0013] Then, the handle 43 is grasped and the handle device 1
6 is rotated clockwise. Then, the worm wheel 30 is rotated in the direction of arrow A shown in FIG. Thereby, the pinion 3
3 is rotated in the direction of arrow B, and the pinion 33 is
It rises while meshing with. During this time, the engagement between the pinion 33 and the rack 34 is always properly maintained by the contact member 38. Then, the elevating frame 22 supporting the pinion shaft 29, that is, the top plate 14, rises. When the top 14 has been raised to the desired height, the operation of the handle device 16 is terminated.
On the other hand, when the operation shaft 24 is rotated clockwise,
4 indicates an arrow C on the male screw portion 53 in accordance with the rotation of the operation shaft 24.
Move in the direction. When the movement of the top plate 14 is completed, the handle 43 is pushed into the handle device 16 and the handle 43 is stored in the handle device 16 as described above.

When the handle device 16 is operated until it reaches the upper limit of the range of movement of the top plate 14, the moving member 54 comes into contact with the elastic buffer member 59 and presses the elastic body 60 in the direction of arrow C via the washer 61. . And the elastic body 60
Since it is compressed between the mover 54 and the upper limit stator 57,
Due to the resilience, the operation of the handle device 16 gradually becomes heavy, and it can be detected that the top plate 14 has reached the upper limit of the movement range. Therefore, the operation of the handle device 16 is stopped.
When the top plate 14 is lowered, the handle device 16
May be rotated, for example, counterclockwise.

According to the above embodiment, the following effects can be obtained.
That is, (1) When the handle 43 is pushed into the handle device 16, the handle 43 is held in a state of being housed in the handle device 16, and therefore no protrusion such as the handle 43 exists on the front surface of the handle device 16. . Therefore, there is no need to remove the handle device 16 and it does not hinder the operation of the counter. When the handle 43 is pushed into the handle device 16 again, the handle 43 protrudes, so that the handle device 16 can be operated. (2) Since the control device 62 is provided on the operation shaft 24, the top plate 1
When 4 reaches the upper limit of the moving range or the lower limit of the moving range,
Since the elastic cushioning member 59 of the control device 62 is compressed by the mover 54, and the operation of the handle device 16 gradually becomes heavy, it is detected that the top plate 14 has reached the upper limit or the lower limit of the movement range, and the handle device 16 is detected. Can be completed without impact. (3) Since the contact member 38 is provided and the rack 34 is provided so as to be movable in the front-rear direction, the engagement with the pinion 33 can be appropriately maintained. Further, even if the position of the pinion 33 is shifted in the direction of the rack 34 while the lifting frame 22 is being moved up and down, the slot 34a absorbs this displacement.
No force is applied to 4. The present invention is not limited to the embodiment described above and shown in the drawings. For example, a worm 28 is attached to the operation shaft 24 and a worm wheel 30 attached to the pinion shaft 29 is rotated. Various modifications are possible without departing from the gist, for example, the invention is not limited to the counter, and may be applied to a lifting operation mechanism such as a desk, a table, a general work table, or a bed floor.

[0016]

According to a first aspect of the present invention, there is provided a raising / lowering operation mechanism such as a counter provided on a handle device so as to be slidable on a handle which is always urged to protrude, and a locking portion is formed on the handle. Is provided with a ratchet device that alternately holds or releases the locking portion when pushed into the handle device, so that if the handle is in the housed state, it does not hinder the operation of the counter, so there is no need to remove the handle device. When the table is raised and lowered, the handle can be easily protruded and the operation can be easily performed.

According to a second aspect of the present invention, there is provided a lifting operation mechanism such as a counter.
A control device is provided on the operation shaft, and when the top board reaches the upper limit of the movement range or the lower limit of the movement range, the movable cushion and the two stators compress the elastic cushioning member. This can be detected, and the operation of the steering wheel device can be completed without impact.

According to the elevating operation mechanism such as the counter according to the third aspect, the handle device is slidably provided on the handle which is always urged to protrude, and the engaging portion is formed on the handle. When the ratchet device is pressed into the handle device, a ratchet device for alternately holding or releasing the locking portion is provided, and a control device is provided on the operation shaft, and when the top plate reaches the upper limit of the moving range or the lower limit of the moving range. Since the elastic cushioning member is compressed by the mover and the two stators, it is not necessary to remove the handle device, the operation can be easily performed, and the moving range of the top plate can be detected,
There is an effect that the operation of the handle device can be completed without impact.

[0019]

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a handle device, an operation shaft, and a control device.

FIG. 2 is a view of the moving element as viewed from plane II in FIG.

FIG. 3 is a perspective view showing a rotation path of a lifting operation mechanism.

FIG. 4 is a vertical sectional side view of a part of the counter.

FIG. 5 is a cross-sectional plan view of a part of the counter.

FIG. 6 is a front view of a counter.

FIG. 7 is a side view of a conventional operation shaft and rotation control mechanism device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Counter 14 Top plate 16 Handle device 24 Operation shaft 40 Handle 43 Handle 46 Locking part 47 Ratchet device 53 Male screw part 54 Moving element 57 Upper limit stator 58 Lower limit stator 59 Elastic buffer member 62 Control device

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Hikaru Hei 3-27653 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A lifting operation mechanism, such as a counter, for operating a handle device attached to a counter to rotate an operation shaft to raise and lower a top plate, wherein the handle device has a direction perpendicular to a rotation surface of the handle device. A handle slidably provided and always biased to a projected state, a locking portion formed on the inner end side of the handle, and the locking portion alternately when the handle is pushed into the handle device. A raising / lowering operation mechanism such as a counter, which comprises a ratchet device for holding or releasing the handle to alternately hold or protrude the handle. 2. A lifting operation mechanism, such as a counter, which operates a handle device attached to a counter to rotate an operation shaft to raise and lower a top plate, wherein the operation shaft corresponds to an upper limit of a movement range of the top plate. An upper limit stator fixed at a position and a lower limit stator fixed at a position corresponding to the lower limit of the movement range, a mover that moves between the two stators according to the rotation of the operation shaft, and the mover A control device is provided which is interposed between an upper limit stator and a lower limit stator, and is constituted by an elastic buffer member which is compressed by the mover when the top plate reaches the upper limit of the movement range or the lower limit of the movement range. Lifting / lowering operation mechanism such as a counter. 3. A lifting operation mechanism such as a counter for operating a handle device attached to a counter to rotate an operation shaft to raise and lower a top plate, wherein the handle device has a direction perpendicular to a rotation surface of the handle device. A handle slidably provided and always biased to a projected state, a locking portion formed on the inner end side of the handle, and the locking portion alternately when the handle is pushed into the handle device. And a ratchet device for holding or releasing the handle to alternately house or protrude the handle, and the operation shaft includes an upper limit stator fixed to a position corresponding to an upper limit of a movement range of the top plate; A lower limit stator fixed at a position corresponding to the lower limit of the movement range, a mover that moves between the two stators in accordance with the rotation of the operation shaft, and the mover, the upper limit stator, and the lower limit stator. Between A lifting / lowering operation of a counter or the like, provided with a control device comprising an elastic buffer member which is interposed and which is compressed by the moving element when the top plate reaches the upper limit of the moving range or the lower limit of the moving range. mechanism.