JPH0531661U - Lifting operation mechanism such as counter - Google Patents

Abstract

(57) [Abstract] [Purpose] The protruding portion on the front surface can be eliminated by a simple operation, and the operating range of the handle device according to the moving range of the top plate can be detected. According to a first aspect of the present invention, the handle device 16 is slidably provided with a handle 43 which is always biased in a protruding state.
Since the locking portion 46 is formed on the handle 43 and the ratchet device 47 that alternately holds or releases the locking portion 46 when the handle 43 is pushed into the handle device 16, the handle 43 is alternately accommodated. Alternatively, there is an effect that the protruding state can be achieved and the operation can be easily performed. According to the second aspect of the present invention, the operating shaft 24 is provided with the control device 62, and when the top plate 14 reaches the upper limit of the moving range or the lower limit of the moving range, the elastic buffer member 59 is provided by the moving element 54 and the two stators 57, 58.
As a result, the range of movement of the top plate 14 can be detected, and the operation of the handle device 16 can be completed without impact.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevating operation mechanism such as a counter that is attached to a counter equipped with a price reading device in a large-scale retail store and operates a handle device to rotate an operation shaft to elevate a top plate.

[0002]

[Prior Art]

 Conventionally, in stores such as supermarkets, an optical price reading device (stationary scanner) that reads a barcode attached to a product is placed on the workbench of the counter. In this counter, the height of the tabletop (workbench) affects the fatigue of the operator. Therefore, the operator installs the tabletop according to the operator's height by operating the handle device to activate the lifting operation mechanism. Raising and lowering the table. Then, while working on the counter, the handle device protruding to the front is removed and stored at a predetermined place. Further, the rotation allowable range of the handle device is limited so that the handle device cannot rotate beyond the movement range of the top plate. In the first conventional example, a fixed part of the counter and a workbench that moves up and down are connected by a chain corresponding to the moving distance so that the workbench does not move up and down more than the length of the chain. In the counter having the elevating function disclosed in the second conventional example, that is, Japanese Utility Model Laid-Open No. 3-27653, as shown in FIG. 7, the operating shaft 2 rotated by the handle device 1 is provided with the male screw portion 3. A female screw 4 to be screwed onto the male screw portion 3 is attached, and a nut 5 is fixed to 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 according to the rotation of the operating shaft 2, and when the top plate reaches the limit of the moving range, the female screw 4 contacts the stator 5. The handle device 1 is prevented from rotating thereafter.

[0003]

[Problems to be solved by the device]

 The raising / lowering operation mechanism such as the counter has the following problems. That is, (1) the handle device 1 is mounted when the top plate is moved up and down, and the handle device 1 must be removed and stored when the lifting operation is completed, which is very troublesome. In particular, when the operator in front stores the handle device 1 in a place different from the predetermined place, the handle device 1 has to be searched, which is not enough in case of urgent need. (2) The handle device is impacted at the upper and lower limits of the moving range of the top plate. That is, when the handle device is rapidly rotated near the upper and lower limits of the moving range of the tabletop, in the first conventional example, a large inertia of the moving workbench is suddenly stopped by the chain that is connected. Is very large. Also in the second conventional example, since the moving speed of the female screw 4 is high, when the female screw 4 collides with the nut 5, the hand holding the handle device 1 may become numb. The present invention has been made in view of the above circumstances, and its purpose is to eliminate the protruding portion of the front surface by a simple operation, without the need to remove the handle device, and in the moving range of the top plate. An object of the present invention is to provide an elevating operation mechanism such as a counter that can detect an operation range of a handle device corresponding to the operation and can complete the operation without impact.

[0004]

[Means for Solving the Problems]

 According to a first aspect of the present invention, in an elevating and lowering operation mechanism such as a counter that operates a handle device attached to a counter to rotate an operation shaft to elevate and lower a top plate, the handle device has a direction perpendicular to a rotation surface of the handle device. A handle that is always biased in a protruding state is slidably provided on the handle, and a locking portion is formed on the inner end side of the handle, and when the handle is pushed into the handle device, the locking portions are alternately arranged. It is characterized in that it is provided with a ratchet device that holds or releases the grips alternately so that the handles are in a retracted or projected state. According to a second aspect of the present invention, in an elevating operation mechanism such as a counter that operates a handle device attached to a counter to rotate an operation shaft to elevate a top plate, the operation shaft corresponds to an upper limit of a moving range of the top plate. The upper limit stator is fixed at the position to move and the lower limit stator is fixed at the position corresponding to the lower limit of the moving range, and a mover is provided to move between the two stators according to the rotation of the operating shaft. A control device including an elastic cushioning member interposed between a child and an upper limit stator and a lower limit stator, and compressed by the mover when the top plate reaches the upper limit of the moving range or the lower limit of the moving range. It is characterized by the provision of. According to a third aspect of the present invention, in an elevating operation mechanism such as a counter that operates a handle device attached to a counter to rotate an operation shaft to elevate a top plate, the handle device has a direction perpendicular to a rotation surface of the handle device. A handle that is always biased in a protruding state is slidably provided on the handle, and a locking portion is formed on the inner end side of the handle, and when the handle is pushed into the handle device, the locking portions are alternately arranged. A ratchet device that holds or releases the grips to alternately accommodate or project is provided, and the upper limit stator is fixed to the operation shaft at a position corresponding to the upper limit of the movement range of the top plate and moved. The lower limit stator is fixed at a position corresponding to the lower limit of the range, and a mover is provided which moves between the two stators in accordance with the rotation of the operation shaft, and the mover and the upper limit stator and the lower limit stator are Interspersed with each It is characterized by the place where the top plate is provided with a control apparatus of an elastic buffer member is compressed by the moving element to come to reach the lower limit of the upper or moving range of the moving range.

[0005]

[Action]

 According to the lifting and lowering operation mechanism of the counter or the like of claim 1, when the handle of the handle device is pushed into the handle device, the ratchet device holds the locking portion and the handle is housed in the handle device. There is no protrusion on the front of the handle device, so it does not interfere with the work of the counter. When the handle is pushed again into the handle device, the ratchet device releases the locking portion and the handle projects in the direction orthogonal to the rotation surface of the handle device, so that the handle device can be easily operated. According to the lifting and lowering operation mechanism of the counter or the like of claim 2, when the handle device is operated to reach the upper limit of the moving range or the lower limit of the moving range, the elastic cushioning 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 moving range, and the operation can be ended without impact. According to the raising / lowering operation mechanism of the counter or the like according to claim 3, when the handle of the handle device is pushed into the handle device, the handle is alternately placed in the handle device and in the state of protruding from the handle device. Therefore, in the housed state, there is no protrusion on the front surface of the handle device, which does not interfere with the work of the counter. Further, the handle device can be easily operated in the protruding state. Further, when the handle device is operated and the top reaches the upper limit of the moving range or the lower limit of the moving range, 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 or lower limit of the moving range, and the operation can be ended without impact.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. First, in FIG. 6, in the counter 11, a work table 13 is provided on a 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 price reading device (stationary scanner) 15 is mounted on the center rear part of the workbench 13, and a handle device 16 is provided on the front surface of the workbench 13. Next, referring to FIG. 4 and FIG. 5, the base 12 is configured by connecting the upper frame 18 and the lower frame 19 to two cylindrical vertical frames 17, and the guide plate 20 is provided on the side surface of the vertical frame 17. It is attached and the leg 21 is attached to the lower end. The elevating frame 22 attached to the inner surface of the work table 13 is provided so as to cover the base 12, and is guided by the guide portion 23 having the balls 23a interposed between the base 12 and the base. It is configured to be able to move up and down with respect to 12.

Now, the rotation transmission path of the lifting operation mechanism will be described with reference to FIG. That is, the handle device 16 is attached to the operation shaft 24, and when the handle device 16 is rotated, the operation shaft 24 is rotated and attached to the shaft 26 via the gear 25 attached thereto. The gear 27 is rotated. A worm 28 is attached to the shaft 26, and the worm wheel 30 attached to the pinion shaft 29 is rotated by the rotation of the worm 28. A transmission mechanism 31 is composed of the gear 25, the gear 27, the worm 28, and the worm wheel 30.

Both ends of the pinion shaft 29 are rotatably supported by bearings 32, 32 (only one is shown) attached to the elevating frame 22, and two pinions 33, 33 are attached at both ends thereof. There is. A rack 34 is engaged with each of the two pinions 33. The rack 34 has elongated holes 34a formed in the front-rear direction (left-right direction in FIG. 4) at both upper and lower ends. The rack 34 is inserted into two supporting pieces 35, 35 attached to the upper frame 18 and the lower frame 19 of the base 12, respectively, and is immovable in the vertical direction via a pin 36 and is not movable in the front-back direction. Is attached so that it can be moved slightly. A shaft portion 37 parallel to the pinion shaft 29 is attached to the elevating frame 22, and a tubular contact member 38 is rotatably attached to the shaft portion 37. The outer peripheral portion of the contact member 38 is in contact with the back surface of the rack 34, so that the meshing state between the rack 34 and the pinion 33 is always kept optimal. A gas spring 39 is mounted between the lifting frame 22 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. 1 and 2. In the handle device 16, a mounting plate 41 is mounted on an inner surface portion of a turntable 40, and an operation shaft 24 is fixed to the mounting plate 41. A cylindrical portion 42 is mounted on the outer peripheral edge of the mounting plate 41 in a direction orthogonal to the rotation surface of the turntable 40, and a grip 43 and a shaft 44 connected thereto can slide in the cylindrical portion 42. Has been inserted into. A spring 45 is interposed between the cylindrical portion 42 and the shaft 44, and the grip 43 is urged by the elastic force of the spring 45 so as to project from the rotating disk 40. A spherical locking portion 46 is formed at the tip of the shaft 44. The ratchet device 47 includes a case 49 having a storage portion 48, two holding pieces 50 pivotally supported at a base end portion thereof and having a recessed portion 50a at a tip end thereof, and which is put in and out of the storage portion 48. It is composed of a well-known ratchet portion 51 having a heart cam attached to the base end of the holding piece 50.

The operation shaft 24 is supported by bearings 52, 52 attached to the elevating frame 22 and the frame 16 a, and a male screw portion 53 is formed. The mover 54 moves on the male screw portion 53 in response to the rotation of the operation shaft 24. This is a nut 55 screwed to the male screw portion 53 and a rotation fixed to the nut 55 to prevent the rotation. It is composed of a prevention plate 56. The upper limit stator 57 and the lower limit stator 58 fixed to the male screw portion 53 are located on both sides of the moving element 54 with the moving element 54 interposed therebetween, and respectively correspond to the upper limit of the moving range of the top 14 or the lower limit of the moving range. ing. The elastic cushioning member 59 is composed of washers 61 arranged at both ends of an elastic body 60 made of, for example, elastic rubber, and is interposed between the upper and lower limit stators 57 and 58 so as to be in contact with the movable member 54. Has been done. A control device 62 is composed of the mover 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, the handle 43 is not operated when working on the counter, so that the handle 43 is stored in the handle 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 part 51 operates to hold the holding piece 50 in the storage part 48. The two holding pieces 50 are closed in the storage portion 48 and hold the locking portion 46 in the recess 50a. Then, the handle 43 is housed in the tubular portion 42 of the handle device 16 (shown by a chain double-dashed line in FIG. 1), and there is no protrusion on the front surface of the turntable 40.

In order to raise the top plate 14, when the handle 43 is pushed again into the handle device 16 from the above-mentioned state, the locking portion 46 pushes the holding piece 50 in the storage portion 48. As a result, the ratchet portion 51 operates and the holding piece 50 is released from the inside of the storage portion 48. When the holding piece 50 comes out of the storage portion 48, the tip end portion opens as shown by the solid line, and the recess 50a releases the locking portion 46. Then, the handle 43 is biased by the elastic force of the spring 45 and projects from the turntable 40.

Then, the handle 43 is grasped and the handle device 16 is rotated clockwise. Then, the worm wheel 30 is rotated in the arrow A direction shown in FIG. 3 via the gears 25 and 27 and the worm 28. As a result, the pinion 33 is rotated in the direction of arrow B, and the pinion 33 moves up while meshing with the rack 34. 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 that supports the pinion shaft 29, that is, the top plate 14 rises. When the top plate 14 is raised to the desired height, the operation of the handle device 16 is finished. On the other hand, when the operating shaft 24 is rotated clockwise, the mover 54 moves on the male screw portion 53 in the direction of arrow C according to the rotation of the operating shaft 24. Then, 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.

By the way, when the handle device 16 is operated until the upper limit of the moving range of the top plate 14 is reached, the mover 54 comes into contact with the elastic cushioning member 59, and the elastic body 60 is moved in the arrow C direction via the washer 61. Press. Since the elastic body 60 is compressed between the mover 54 and the upper limit stator 57, the elastic force of the elastic body 60 gradually increases the weight of the operation of the handle device 16, and the top plate 14 reaches the upper limit of the movement range. It can be detected that it has reached. Therefore, the operation of the handle device 16 is stopped. When lowering the top plate 14, the handle device 16 may be rotated counterclockwise, for example.

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 the state of being housed in the handle device 16, so that the front face of the handle device 16 has a protrusion such as the handle 43. do not do. Therefore, it is not necessary to remove the handle device 16, and it does not interfere with the work of the counter. When the handle 43 is pushed into the handle device 16 once again, the handle 43 projects so that the handle device 16 can be operated. (2) Since the control device 62 is provided on the operation shaft 24, when the top plate 14 reaches the upper limit of the movement range or the lower limit of the movement range, the elastic cushioning member 59 of the control device 62 is compressed by the moving element 54. Since 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 moving range, and the operation of the handle device 16 can be ended without an impact. (3) Since the abutting member 38 is provided and the rack 34 is provided so as to be movable in the front-rear direction, the meshing with the pinion 33 can be properly maintained. Further, even if the position of the pinion 33 is displaced toward the rack 34 during the ascending / descending of the elevating frame 22, the elongated hole 34a absorbs the displacement, so that the rack 34 is not subjected to an excessive force. 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 a pinion shaft 29 is rotated. The present invention is not limited to the counter, and may be applied to an elevating operation mechanism such as a desk, a table, a general workbench or a floor plate of a bed, and various modifications can be made without departing from the spirit of the invention.

[0016]

[Effect of the device]

 An elevating operation mechanism such as a counter according to claim 1 is provided with a handle device slidably provided with a handle which is always biased in a protruding state, and a locking portion is formed on the handle, and the handle is provided in the handle device. Since the ratchet device that holds or releases the locking part alternately when it is pushed into the door does not interfere with the work of the counter when the handle is stored, it is not necessary to remove the handle device and the top plate When moving up and down, the handle can be easily brought into the protruding state, and the operation can be easily performed.

According to a second aspect of the present invention, there is provided a lifting and lowering operation mechanism such as a counter, in which a control device is provided on the operation shaft, and when the top reaches the upper limit of the moving range or the lower limit of the moving range, the moving element and the two stators cause elastic force. Since the cushioning member is compressed, the range of movement of the top plate can be detected, and the operation of the handle device can be completed without impact.

According to the lifting and lowering operation mechanism of the counter or the like of claim 3, the handle device is slidably provided with a handle which is always biased in the protruding state, and a locking portion is formed in the handle. A ratchet device is provided to alternately hold or release the locking part when is pushed into the handle device, and a control device is provided on the operation shaft so that the top plate is at 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 both stators when reaching, it is not necessary to remove the handle device, the operation can be done easily, and the range of movement of the top plate can be detected. This has the effect that the operation of the handle device can be ended without impact.

[0019]

[Brief description of drawings]

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

FIG. 2 is a diagram of the moving element viewed from the II plane 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 the counter.

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

[Explanation 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 mover 57 upper limit stator 58 lower limit stator 59 elastic cushioning member 62 control device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Mori No.17 Akutigigayama, Gifu City, Gifu Prefecture Tanahashi Industry Co., Ltd.

Claims (3)

[Scope of utility model registration request] 1. A lifting / lowering operation mechanism such as a counter that operates a handle device attached to a counter to rotate an operation shaft to raise / lower a top plate, wherein the handle device is provided in a direction orthogonal to a rotation surface of the handle device. A handle that is slidably provided and is always biased in a protruding state, a locking portion formed on the inner end side of the handle, and the locking portion that alternates when the handle is pushed into the handle device. And a ratchet device that holds or releases the handle alternately to bring the handle into a housed state or a projected state alternately. 2. An elevating operation mechanism such as a counter that operates a handle device attached to a counter to rotate an operation shaft to elevate a top plate, wherein the operation shaft corresponds to an upper limit of a moving range of the top plate. An upper limit stator fixed to a position and a lower limit stator fixed to a position corresponding to a lower limit of a moving range; a mover moving between the two stators according to 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 which is composed of an elastic cushioning member that is compressed by the mover when the top plate reaches the upper limit of the moving range or the lower limit of the moving range. Lifting mechanism for counters and other features. 3. A raising / lowering 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 is arranged in a direction orthogonal to a rotation surface of the handle device. A handle that is slidably provided and is always biased in a protruding state, a locking portion formed on the inner end side of the handle, and the locking portion that alternates when the handle is pushed into the handle device. And a ratchet device that holds or releases the handle alternately to bring the handle into a housed state or a projected state, and the operation shaft has an upper limit stator fixed at a position corresponding to an upper limit of a movement range of the top plate, and Of the lower limit stator fixed at the position corresponding to the lower limit of the moving range, the mover that moves between the two stators according to the rotation of the operation shaft, and the mover and the upper limit stator and the lower limit stator Between A lifting and lowering operation of a counter or the like, which is provided with a control device that is provided with an elastic cushioning member that is interposed and that is compressed by the mover when the top plate reaches the upper limit of the moving range or the lower limit of the moving range. mechanism.