JP5215251B2 - Shock absorber - Google Patents

Description

  The present invention relates to a shock absorber, and more particularly to a shock absorber that operates so as to reduce an impact on a unit when the unit that can be pulled out is housed in the casing.

  An automatic teller machine installed in a financial institution or the like has a plurality of functions stored in a unit as a unit. Each of these units is installed in a housing so that it can be pulled out, and is configured so that it can be individually pulled out from the housing during maintenance and stored again in its original position after the work is completed.

FIG. 9 is a partial perspective view of the automatic teller machine as seen from the back side, and FIG. 10 is a diagram showing an example of adjusting the mounting position of the unit.
The automatic teller machine is provided with a passbook port, a card port, a bill port, a coin port, a display / input device, etc. on the customer service side of the housing 100, and a card reading unit and a passbook are printed inside. A unit for issuing a statement slip or a unit for depositing / withdrawing banknotes and coins is stored. Among these units, a unit that needs to be pulled out from the housing relatively frequently and requires maintenance can be easily pulled out from the back side of the automatic teller machine.

  In the example shown in the drawing, a pair of slide rails 101 that are extendable and contractable are fixed to the casing 100, and a mounting base 102 is mounted on the slide rail 101. A unit 103 is mounted. As shown in FIG. 10, the unit 103 is screwed to the mounting base 102 with screws 104. Here, the screw hole 105 of the mounting base 102 is formed in an oval shape that is long in the direction in which the unit 103 is pulled out and stored, and the mounting position of the unit 103 on the mounting base 102 is provided on the customer service side. It can be fine-tuned according to the opening. Thereby, when the unit 103 is accommodated in the housing 100, the unit 103 can be appropriately positioned at a predetermined position on the back surface of the opening provided on the customer service side.

  The slide rail 101 is capable of moving the heavy unit 103 smoothly in the horizontal direction by supporting a plurality of rails by a rolling element so as to be linearly movable. Therefore, such a slide rail 101 enables the unit 103 mounted on the slide rail 101 to be pulled out of the housing 100 or stored in the housing 100 with a small operating force. For this reason, the storage operation when the unit 103 pulled out for maintenance or the like is stored in the housing 100 is easy. However, when the unit 103 is stored with force, the unit 103 moves vigorously in the storage direction, and the housing 103 It will be stopped when it collides with.

  When the unit 103 repeatedly receives a large impact directly during the storing operation, the unit 103 is displaced from the predetermined position screwed to the mounting base 102 in the storing direction. When the mounting position of the unit 103 on the mounting base 102 is shifted in the storing direction, when the unit 103 stops at the storing position, the decorative panel installed on the customer service side of the housing 100 is partially pushed out and deformed. Or it will be damaged.

  In order to alleviate such an impact when the unit 103 is housed, a cushion rubber 106 is installed on the housing 100 and the unit 103 is forced to stop against the cushion rubber 106.

  Such a cushion rubber 106 may not be able to absorb the impact if the moving speed of the unit 103 during the storing operation is fast. In such a case, a shock absorber may be added. The shock absorber is intended to absorb the impact received from the unit 103 by utilizing the viscous resistance of the fluid.

  There is also known a shock absorber that uses a biasing member such as a coil spring to prevent the movable part from colliding with the fixed part (see, for example, Patent Document 1). According to this shock absorber, when the movable part pivotally supported by the fixed part is closed, the block provided in the movable part is provided in the fixed part and one end is urged by the urging member. It is made to contact with the other end of the lever. By making the contact surface of the block with which the lever abuts into a surface having a different angle, the push-up force acting on the movable portion, that is, the shock absorbing capacity is changed in two stages.

Japanese Utility Model Publication No. 7-32244

  However, a shock absorber that absorbs an impact is excellent in impact absorbing ability, but is generally expensive, so that there is a problem that a burden on cost is large. In addition, the shock absorber described in Patent Document 1 is applied to a movable part pivotally supported by a fixed part, and an impact when the block comes into contact with the lever is caused by the rotation of the lever. Since the configuration concentrates on the shaft, there is a problem in durability and reliability.

  The present invention has been made in view of these points, and an object of the present invention is to provide an inexpensive and durable shock absorber that effectively reduces the housing speed of the unit and suppresses an impact at the time of stopping. And

In the present invention, in order to solve the above-described problems, the storage speed of the unit supported so as to be movable back and forth in the pull-out direction and the storage direction by the slide rail fixed to the housing is reduced to suppress the impact at the time of stop. In the shock absorber, a leaf spring having a shape bent in a substantially U shape and having one end fixed to one of the movable part on the unit side and the fixed part on the housing side, the movable part and the fixed part The other side of the unit is fixed across a path along which the other end of the leaf spring moves during the housing operation of the unit, and the other end of the leaf spring is in contact with the other during the housing operation of the unit. And a leaf spring regulating guide that is inclined with respect to the housing direction of the unit in a direction that increases the reaction force of the leaf spring as it moves in the housing direction. Damping device is provided.

  According to such a shock absorber, when the unit is returned from the state of being pulled out of the housing to the original storage position, the reaction force of the leaf spring is changed in a direction increasing by the leaf spring regulating guide. The increase in the reaction force of the leaf spring acts to reduce the storage speed for the unit performing the storage operation.

  Since the shock absorber of the above configuration can reduce the storage speed during the storage operation of the unit, the shock during the storage operation is more effective than when the unit is received with cushion rubber and the storage operation is forcibly stopped. Can be mitigated, and the position shift of the unit on the mounting base can be prevented.

Further, since the unit does not collide with the housing during the storing operation, the load due to the impact on the unit can be reduced.
Furthermore, since this shock absorber is realized by a relatively simple component such as a durable leaf spring, it can be realized at a lower cost than a shock absorber.

It is a perspective view which shows the example of internal arrangement | positioning of the unit which looked at the automatic teller machine from the back side. It is explanatory drawing of the buffering device which concerns on 1st Embodiment which looked through and showed the principal part of the unit. It is a figure explaining the operation | movement state of a buffering device, Comprising: (A) is a top view which shows the state when storing in a housing | casing from the state which pulled out the unit, (B) is stored in a housing | casing from the state which pulled out the unit. FIG. 6C is a side view showing the state when the unit is placed, and FIG. 8C is a plan view showing the state when the unit is stored in the housing. It is a figure which shows an example of a buffering device. It is explanatory drawing which shows the adjustment method of the accommodation speed by a buffering device. It is a figure which shows the example of the locking mechanism of a unit. It is a figure which shows the buffering device which concerns on 2nd Embodiment, Comprising: (A) is a top view which shows a unit drawer | drawing-out state, (B) The top view which shows the state in the middle of unit accommodation, (C) is a unit accommodation state. FIG. It is a side view which shows the buffering device which concerns on 3rd Embodiment. It is the fragmentary perspective view which looked at the automatic teller machine from the back side. It is a figure which shows the example of adjustment of the attachment position of a unit.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, taking as an example a case where the present invention is applied to an automatic teller machine and a unit that is detachably mounted by a slide rail.
FIG. 1 is a perspective view showing an example of an internal arrangement of a unit when the automatic teller machine is viewed from the back side, and FIG. 2 is an explanatory view of the shock absorber according to the first embodiment shown through a main part of the unit. is there.

  The automatic teller machine has a plurality of units 11 housed inside a housing 10 thereof. These units 11 are detachably mounted from the back side of the housing 10 for maintenance. Therefore, each unit 11 is mounted on a pair of extendable slide rails 12 fixed to a frame or the like inside the housing 10. Specifically, a mounting base 13 shown in FIG. 2 is mounted on the slide rail 12, and the unit 11 is mounted on the mounting base 13.

  When checking, repairing, or replenishing bills or the like, the unit 11 is pulled out while being mounted on the slide rail 12, and necessary work is performed. After the work is completed, the unit 11 is returned to its storage position. become.

  A shock absorber is disposed between the mounting base 13 mounted on the extendable slide rail 12 and the shelf board 14 in the housing 10. This shock absorber includes a leaf spring 15 fixed to the bottom surface of the mounting base 13 that is a movable portion with respect to the housing 10 and a leaf spring regulation guide fixed to the top surface of the shelf plate 14 that is a fixing portion of the housing 10. 16. The leaf spring 15 has a shape bent into a substantially U shape, and a flange formed at one end thereof is fixed to the mounting table 13 by appropriate fixing means such as screwing to the mounting table 13 or welding. A roller 17 that reduces contact resistance with the leaf spring regulating guide 16 is fixed to the end. The roller 17 is preferably a metal roller in order to prevent damage due to repeated impacts. The leaf spring regulating guide 16 is made of an angle material, and is fixed to the shelf plate 14 with screws 18 a and 18 b in an angled direction with respect to the housing direction of the unit 11. At this time, the leaf spring restricting guide 16 moves the wall to the shelf 14 so as to cross the extension line of the path where the roller 17 moves until it contacts the leaf spring restricting guide 16 when the unit 11 is housed. It will be standing. Further, the leaf spring regulating guide 16 is fixed to the shelf plate 14 with screws 18a and 18b in the vicinity of both ends thereof. Here, a plurality of screw holes 19 on the side where the roller 17 first contacts the leaf spring regulating guide 16 are provided. The plurality of screw holes 19 are arranged on concentric circles with the distance between the screw 18a and the screw 18b as a radius and centering on the screw 18b.

  3A and 3B are diagrams for explaining the operation state of the shock absorber. FIG. 3A is a plan view showing a state where the unit is housed in the housing from the state where the unit is pulled out, and FIG. The side view which shows the state when accommodated in a body, (C) is a top view which shows a state when a unit is accommodated in a housing | casing.

  When the unit 11 is pulled out, as shown in FIGS. 3A and 3B, the leaf spring 15 and the leaf spring regulating guide 16 are located at a distance from each other, and the shock absorber is located with respect to the unit 11. It has no effect.

  When the unit 11 is stored from the pulled-out state, first, the roller 17 that has moved together with the unit 11 in the storing direction comes into contact with the leaf spring regulating guide 16. After the roller 17 comes into contact with the leaf spring restriction guide 16, the roller 17 rolls on the standing wall surface of the leaf spring restriction guide 16. Since the leaf spring restriction guide 16 is attached obliquely with respect to the storage direction, the leaf spring 15 is bent little by little as the roller 17 rolls on the standing wall surface of the leaf spring restriction guide 16. At the same time, the reaction force (repulsive force) of the leaf spring 15 increases. The reaction force of the leaf spring 15 acts in a direction to push the unit 11 back, and the closer the storage position is, the larger the storage speed of the unit 11 is rapidly reduced. . Finally, the unit 11 collides with a cushion rubber (not shown) and stops at the storage position shown in FIG. 3C, where the lock shown in FIG. 6 is applied, and the unit 11 is fixed.

FIG. 4 is a diagram illustrating an example of the shock absorber.
The leaf spring 15 constituting the shock absorber is made of a stainless steel material for springs and is formed in a substantially U shape. As an example of the leaf spring 15, the long portion has a length of about 110 millimeters, the short portion has a length of about 70 millimeters, and the long portion and the short portion have a diameter of about 20 millimeters. Are connected by a semicircular arch, and are opened at an angle of about 7 degrees. The roller 17 is a rotating roller having a diameter of about 20 millimeters, and is fixed to the short portion spaced about 62 millimeters from the boundary between the short portion and the semicircular arch portion.

  The leaf spring regulating guide 16 has a length of about 200 millimeters and is inclined about 3 degrees with respect to the storage direction. Further, during the storing operation of the unit 11, the roller 17 comes into contact with the position of about 10 mm from the tip of the leaf spring regulating guide 16, and then rolls a distance of about 185 mm to the storing position of the unit 11. . In the meantime, the distance between the long portion and the roller 17 is reduced, and accordingly, the reaction force of the leaf spring 15 is increased, which contributes to the reduction of the storage speed of the unit 11.

  The magnitude of the reaction force of the leaf spring 15 is set according to the weight of the unit 11 to which the shock absorber is attached, and can be adjusted by changing the above dimensions, plate width, plate thickness, heat treatment method, and the like. Moreover, it can also be adjusted by changing the relative position with the leaf spring regulating guide 16. Furthermore, the storage speed of the unit 11 can be adjusted by changing the angle of the leaf spring regulating guide 16.

FIG. 5 is an explanatory view showing a method of adjusting the storage speed by the shock absorber.
The leaf spring regulating guide 16 is fixed by screwing into a screw hole formed in the shelf plate 14 with screws 18a and 18b. As shown in FIG. 2, a plurality of screw holes 19 into which the screws 18a are screwed are formed in the shelf board 14, and one screw hole into which the screw 18b is screwed is formed. In this way, by changing the position of the screw hole 19 on the side where the roller 17 comes into contact with the leaf spring regulation guide 16 in advance, the angle of the leaf spring regulation guide 16 with respect to the storage direction can be changed. By changing the angle of the leaf spring restriction guide 16, the position where the roller 17 first contacts the leaf spring restriction guide 16 is changed during the storing operation of the unit 11. On the other hand, the relative position between the leaf spring regulating guide 16 and the long portion of the leaf spring 15 when the roller 17 finally stops at the storage position of the unit 11 hardly changes. From this, the distance that the roller 17 rolls on the wall surface of the leaf spring restriction guide 16 changes depending on the installation angle of the leaf spring restriction guide 16.

  For example, the installation angle is changed from the state where the leaf spring regulating guide 16 is installed at an angle at which the roller 17 rolls over almost the entire length as shown in FIG. 4 to the position shown by the broken line in FIG. In this case, if the storage speed of the unit 11 until the roller 17 comes into contact with the leaf spring regulation guide 16 is the same, the storage speed is rapidly increased because the reaction time of the leaf spring 15 is acting on the unit 11 is short. Will be decelerated.

FIG. 6 is a diagram showing an example of a unit locking mechanism.
The unit 11 is configured to be locked when moved to its storage position. The locking mechanism includes, for example, a passive portion 20 fixed to the frame of the housing 10, a latch lever 22 that is rotatably provided on the unit 11 around the shaft 21, and a latch lever 22 that is hooked on the passive portion 20. And a spring 23 that is constantly biased so as to be stopped. Although not shown, the latch lever 22 is linked to a handle 24 attached to the unit 11 so that the latched state with the passive unit 20 can be released by operating the handle 24. Yes.

  When pulling out the unit 11 from the housing 10 for maintenance, first, the latch lever 22 latched on the passive part 20 is rotated counterclockwise around the center of the shaft 21 to be connected to the passive part 20. By releasing the hooked state, the handle 24 is pulled forward to release the lock mechanism. The unit 11 from which the lock mechanism has been released can be further pulled out by pulling the handle 24 forward.

  When storing the unit 11, first, the inclined portion formed at the tip of the latch lever 22 hits the passive portion 20, and when the inclined portion gets over the passive portion 20, the spring 23 pulls the latch lever 22 back to the illustrated position. Then, the latch lever 22 is hooked on the passive portion 20 to bring the unit 11 into the locked state.

  FIGS. 7A and 7B are diagrams showing a shock absorber according to the second embodiment, in which FIG. 7A is a plan view showing a unit drawing state, FIG. 7B is a plan view showing a state in which the unit is being housed, and FIG. It is a top view which shows a storage state. In FIG. 7, the same or equivalent components as those shown in FIG. 2 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the second embodiment, the mounting locations of the leaf spring 15 and the leaf spring regulating guide 16 of the shock absorber according to the first embodiment are reversed. That is, the leaf spring 15 of the shock absorber is attached to a fixed portion such as a shelf board in the housing 10, and the leaf spring regulation guide 16 is attached to the bottom surface of the mounting base 13 on which the unit 11 is mounted. Yes. Further, in this embodiment, the leaf spring 15 is installed in a direction in which the leaf spring regulating guide 16 approaches from the side of the semicircular arch portion where the leaf spring 15 is bent.

  In this shock absorber, the relative operations of the leaf spring 15 and the leaf spring regulating guide 16 are the same as those in the first embodiment. That is, when the unit 11 starts the storing operation from the position shown in FIG. 7A and moves to the position shown in FIG. 7B, the leaf spring regulating guide 16 is moved to the roller 17 of the leaf spring 15. Contact. Thereafter, as the leaf spring regulating guide 16 moves in the storage direction, a load is applied to the leaf spring 15 to increase the reaction force of the leaf spring 15, and this reaction force reduces the storage speed of the unit 11. The unit 11 stops when it moves to the predetermined storage position shown in FIG. 7C, and is locked by the locking mechanism.

  Even in this embodiment, the leaf spring regulation guide 16 can be adjusted in angle as described above. However, if it is not necessary to adjust the angle, the leaf spring regulation guide 16 is mounted on the mounting base. A part of 13 can be integrally formed by cutting and raising, for example.

  FIG. 8 is a side view showing a shock absorber according to the third embodiment. In FIG. 8, the same or equivalent components as those shown in FIGS. 2 and 7 are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the third embodiment, the shock absorbers according to the first and second embodiments are arranged between the bottom surface of the mounting base 13 on which the unit 11 is mounted and the fixing portion of the shelf board 14 in the housing 10. On the other hand, it is arranged between the side surface of the mounting base 13 and the fixing portion of the side wall in the housing 10. For this reason, the widths of the leaf spring 15 and the roller 17 need to be formed smaller than the thickness of the slide rail 12, but by changing the other dimensions of the leaf spring 15, a necessary reaction force is secured. I am doing so. Alternatively, the necessary reaction force can be secured by providing shock absorbers on both side surfaces of the mounting base 13.

  In the above embodiment, the leaf spring 15 is attached with the roller 17 for soft landing on the leaf spring regulating guide 16, but when attached to the light weight unit 11, a large reaction force is not required. Not necessarily required. In that case, in order to avoid sliding between metals, a sliding portion having a low frictional resistance such as a resin is attached instead of the roller 17, and the leaf spring regulation guide 16 is made of a resin to reduce the sliding resistance. May be. The leaf spring regulation guide 16 uses a linear contact surface with the roller 17, but changes the reaction force variation characteristic of the leaf spring 15 by making it curved. be able to.

DESCRIPTION OF SYMBOLS 10 Housing | casing 11 Unit 12 Slide rail 13 Mounting base 14 Shelf board 15 Leaf spring 16 Leaf spring regulation guide 17 Roller 18a, 18b Screw 19 Screw hole 20 Passive part 21 Shaft 22 Latch lever 23 Spring 24 Handle

Claims (8)

In the shock absorber that reduces the storage speed of the unit supported by the slide rail fixed to the housing so as to be movable back and forth in the pull-out direction and the storage direction, and suppresses the impact at the time of stop,
A leaf spring having a shape bent in a substantially U shape and having one end fixed to one of the movable part on the unit side and the fixed part on the housing side;
The other of the movable part and the fixed part is fixed across a path along which the other end of the leaf spring moves during the housing operation of the unit, and the other end of the leaf spring during the housing operation of the unit. A leaf spring regulating guide that is inclined with respect to the housing direction of the unit in a direction to increase the reaction force of the leaf spring as it moves in the housing direction of the unit while contacting
A shock absorber characterized by comprising.   2. The shock absorber according to claim 1, wherein the leaf spring is provided with a roller at the other end on the side in contact with the leaf spring restriction guide to reduce contact resistance with the leaf spring restriction guide.   The shock absorber according to claim 1, wherein the leaf spring regulating guide is capable of changing an inclination angle with respect to a housing direction of the unit.   The leaf spring regulating guide is fixed by screwing the vicinity of both ends thereof, and is provided with a plurality of screw holes on the side where the other end of the leaf spring first contacts during the housing operation of the unit. 2. The shock absorber according to claim 1, wherein an inclination angle with respect to the direction can be adjusted.   The leaf spring is mounted on the slide rail and fixed to a bottom surface of a mounting base on which the unit is mounted, and the leaf spring restriction guide is fixed to the fixing portion positioned to face the bottom surface of the mounting base. The shock absorber according to claim 1.   The leaf spring restricting guide is mounted on the slide rail and fixed to a bottom surface of a mounting base on which the unit is mounted, and the leaf spring is fixed to the fixing portion positioned to face the bottom surface of the mounting base. The shock absorber according to claim 1.   The leaf spring is mounted on the slide rail and fixed to at least one side surface of the mounting base on which the unit is mounted, and the leaf spring restricting guide is disposed on the fixing portion positioned opposite to the side surface of the mounting base. The shock absorber according to claim 1, wherein the shock absorber is fixed.   In an automatic teller machine that houses a plurality of units that are supported by slide rails in a drawer direction and a storage direction so as to be movable back and forth in the interior of the housing,
  A leaf spring having a shape bent in a substantially U shape and having one end fixed to one of the movable part on the unit side and the fixed part on the housing side, and the other of the movable part and the fixed part The plate spring is disposed on a path along which the other end of the leaf spring moves during the housing operation of the unit, and the plate moves as the other end of the leaf spring contacts and moves in the housing direction of the unit during the operation of the unit. An automatic teller machine comprising a shock absorber having a leaf spring regulating guide inclined in a direction to increase a reaction force of a spring.

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