JP5848987B2 - Drawer fall prevention mechanism and drawer fall prevention member - Google Patents

Description

  The present invention relates to a drawer dropout prevention mechanism and a drawer dropout prevention member. The present invention is particularly suitable for use in a dropout prevention mechanism and a dropout prevention member for storing cash register cash.

  The electronic cash register (hereinafter referred to as ECR) used in cash registers at retail stores and restaurants is equipped with a drawer with a money case inside to draw money exchanged with customers. It comes to store. FIG. 10 is a perspective view showing an example of a conventional drawer device. As shown in FIG. 10, the ECR 1 includes an ECR main body 11 and a drawer device 10. The drawer device 10 includes a storage container 12 and a drawer 13. The drawer 13 is housed in a retractable manner with respect to the storage container 12 and stores money in a money case provided in the drawer 13.

  In general, such a drawer apparatus employs various fall prevention mechanisms in order to prevent the drawer from dropping from the storage container when the drawer is pulled out more than necessary. For example, a pair of guide rollers provided on the inner side surface of the storage container and a rear end of the guide rail to support the pair of guide rails provided on both side surfaces of the drawer and to slide the drawer in the front-rear direction. There is known a fall prevention mechanism that restricts the drawing operation of the drawer more than necessary by the engagement with a stopper member (stopper piece or stopper roller) fixed to the door, and realizes the fall prevention (for example, Patent Document 1). reference). Further, the engagement of the stopper pin inserted through the insertion hole provided on the bottom surface of the drawer and the convex stopper member formed in the portion corresponding to the insertion hole on the inner bottom surface of the storage container exceeds the necessity of the drawer. There is also known a mechanism that realizes the fall prevention by restricting the pull-out operation (see, for example, Patent Document 2).

  These fall prevention mechanisms are common in that the stopper slides the sliding forward of the drawer with respect to the storage container at a predetermined drawing position from the storage container. By the way, in the drawer apparatus provided with these fall prevention mechanisms, when it is desired to take out the drawer from the storage container for cleaning / inspection of the inside of the storage container, the drawer is lifted upward by several mm to 1 cm with respect to the storage container. Since the engagement by the stopper member is released, the drawer can be removed from the inside of the storage container.

JP-A-9-119772 JP 2002-150428 A

  However, in the conventional drawer device provided with these fall prevention mechanisms, when the drawer is opened vigorously, the engagement by the stopper member is suddenly released due to a severe impact at the time of opening, and the storage container is contrary to the intention of the user. The drawer may fall off. Further, since the stopper member directly receives an impact when the entire drawer is opened, the stopper member may be worn due to long-term use when the drawer is frequently put in and out. When such wear occurs, even if the drawer is not opened vigorously, the engagement by the stopper member is released, and the drawer may fall out of the storage container against the user's will.

  In view of such circumstances, there has been a need for a new drawer dropout prevention mechanism that can reliably prevent the drawer from dropping out of the storage container due to severe impact when the drawer is opened, wear of the stopper member, or the like.

  The present invention provides a drop-off prevention mechanism for preventing the drawer pulled out from the storage container from falling off, the support member provided inside the storage container and slidably supported in the front-rear direction, and the storage container And a pair of engagement pieces provided at corresponding positions on the inner side of the drawer and on the outer side of the drawer. The forward sliding of the drawer is restricted at a predetermined pull-out position by engagement, and the drawer is predetermined from the support member. A sliding engagement portion for releasing the engagement by pulling up above the height of the drawer, and a drawer falling-off prevention member provided at an upper portion of the drawer. An insertion portion that can be inserted into a region between the upper portion of the drawer and the inner upper portion of the storage container, the insertion portion being inserted into the region, the insertion portion of the drawer from the support member. Raise Serial and provides a drawer captive having the structure limited to less than a predetermined height.

  According to the present invention, by inserting the drawer dropping-off preventing member into the region between the upper part of the drawer and the inner upper part of the storage container, the pulling-up operation of the drawer for releasing the drawer falling prevention by the stop member is limited. Therefore, it is possible to reliably prevent the drawer from dropping out of the storage container. In addition, no special processing or fine adjustments are required when attaching the drawer dropout prevention member, so there is no cost or effort, and a conventional drawer apparatus equipped with a conventional fall prevention mechanism is also available. Widely applicable.

It is a perspective view which shows the drawer apparatus which concerns on 1st Embodiment of this invention. FIG. 2 is an enlarged perspective view of a portion X in FIG. 1 when the drawer dropping-out preventing member is locked. FIG. 2 is an enlarged perspective view of a portion X in FIG. 1 when the drawer dropping-out preventing member is in an unlocked state. It is explanatory drawing which shows the structure of the drawer falling-off prevention member of FIG. It is a principal part top view of the support surface which concerns on 1st Embodiment of this invention. It is a principal part top view which shows the drawer falling-off prevention member of a locked state. It is AA arrow sectional drawing of FIG. It is a principal part top view which shows the example of installation of the drawer dropping-out prevention member of a lock release state. FIG. 9 is a cross-sectional view taken along line B-B in FIG. 8. It is a perspective view which shows an example of the conventional drawer apparatus.

  The present invention provides a drop-off prevention mechanism for preventing the drawer pulled out from the storage container from falling off, the support member provided inside the storage container and slidably supported in the front-rear direction, and the storage container And a pair of engagement pieces provided at corresponding positions on the inner side of the drawer and on the outer side of the drawer. The forward sliding of the drawer is restricted at a predetermined pull-out position by engagement, and the drawer is predetermined from the support member. A sliding engagement portion for releasing the engagement by pulling up above the height of the drawer, and a drawer falling-off prevention member provided at an upper portion of the drawer. An insertion portion that can be inserted into a region between the upper portion of the drawer and the inner upper portion of the storage container, the insertion portion being inserted into the region, the insertion portion of the drawer from the support member. Raise Serial and provides a drawer captive having the structure limited to less than a predetermined height.

The “predetermined height” is a lifting height of the drawer with respect to the support member (guide rail) necessary for releasing the engagement by the stopper member, and is generally about several mm to 1 cm.
"Dropping" means that the engagement is suddenly released due to a severe impact when the drawer is opened or the wear of the stopper member, etc. in the drawer device equipped with a fall prevention mechanism that prevents the drawer from dropping from the storage container. Then, the drawer falls from the storage container against the user's will.
The “region” is a space between the lower part of the upper surface of the storage container and the upper part of the drawer. The width of the region between the lower part of the upper surface of the storage container and the upper part of the drawer is generally about several mm to 10 mm.
“Structure” is, for example, the thickness or shape of the insertion part of the drawer falling-off prevention member attached to the upper part of the drawer.
It should be noted that the state in which the drawer cannot be removed from the storage container by the mechanism for preventing the drawer from falling off is “locked”, and the state in which the locked state is released and the drawer can be removed from the storage container is “locked”. "Release state".

  In the drawer dropping-out prevention member according to the present invention, the drawer dropping-out prevention member includes an insertion portion that is rotatably provided at an upper portion of the drawer, and can be inserted into the region by the rotation when the drawer is in the drawer position. The insertion portion may restrict the pulling-up of the drawer from the support member to less than the predetermined height when inserted into the region.

  In this way, when the insertion portion is inserted into the region by rotation of the drawer dropout prevention member, the drawer dropout prevention mechanism is switched from the unlocked state to the locked state in order to prevent the drawer from falling off the storage container. Can be easily realized. Further, in the locked state, the insertion portion is inserted into the storage container, so that it does not interfere with taking out money or the like from the drawer.

  In the drawer dropping-out prevention member according to the present invention, the drawer includes a support surface provided with a predetermined opening at an upper portion, and the drawer dropping-out prevention member includes an insertion piece that can be inserted into the opening. May have a shape and size that limit the range of rotation within a predetermined range by engaging the insertion piece and the opening when the insertion piece is inserted.

  By doing so, the rotation range of the drawer dropping-out prevention member is limited by the engagement between the insertion piece of the drawer dropping-out prevention member and the opening of the support surface, so that the contact with the drawer dropping-out prevention member during use of the drawer device is limited. It is possible to prevent the arrangement of the drawer preventing member from being unintended by the user due to an erroneous operation or unexpected rotation. In addition, due to the engagement, the drawer dropout prevention member is more stably held on the support surface.

  The “support surface” is a surface that is attached to the upper portion of the drawer and supports the drawer falling-off preventing member. In the case of a cash register, for example, a support plate such as an angle or a bracket for fixing the bill presser may be used as the support surface.

  In the drawer dropout prevention member according to the present invention, the range of rotation includes a rotation angle at which the insertion portion is inserted into the region and a rotation angle at which the insertion portion is not inserted, and may be a rotation angle of 90 degrees at the maximum.

  In this way, since switching between the locked state and the unlocked state is realized by a simple rotation operation, when it is necessary to check or clean the inside of the storage container, by operating as an operation lever, The drawer can be taken out of the storage container immediately without requiring special labor and time for unlocking. In addition, erroneous operation due to contact with the drawing-out part pushing member is less likely to occur.

  This invention may be the above-mentioned drawer dropping-off preventing member.

  In this way, the drawer can be prevented from falling off regardless of the type of the drawer device as long as it is a system that releases the engagement by the stopper member by pulling the drawer up to a predetermined height with respect to the storage container. It is possible to prevent the drawer from falling off simply by attaching the members. In addition, no special processing or fine adjustments are required when attaching the drawer dropout prevention member, so it does not require cost or labor, and is widely applicable to general drawer equipment with a conventional fall prevention mechanism. it can.

[First Embodiment]
Based on FIGS. 1-5, the drawer falling-off prevention mechanism which concerns on 1st Embodiment of this invention is demonstrated.
Hereinafter, the direction in which the drawer 13 is pulled out from the storage container 12 will be described as the front, and the closing direction will be described as the rear.

FIG. 1 is a perspective view showing a drawer apparatus according to the first embodiment of the present invention.
The drawer device 10 includes a storage container 12, a drawer 13 that is retractably stored in the storage container 12, a support surface 14 provided on the top of the drawer 13, and a drawer dropout prevention member 15 provided on the support surface 14. In addition, the structure provided with the drawer prevention member 15 directly on the upper part of the drawer 13 without the support surface 14 may be sufficient.

  As shown in FIG. 1, in a state where the drawer 13 is pulled out to a position where forward sliding is restricted by engagement by a stopper member (not shown), the support surface 14 provided on the upper portion of the drawer 13, and the storage container 12. A part of the drawer dropping-out preventing member 15 is inserted into a region between the two. In 1st Embodiment, the width | variety (distance of an up-down direction) of the area | region between the storage container 12 and the support surface 14 is about 10 mm. Therefore, the drawer dropout prevention member 15 is set such that the thickness of the insertion portion can be inserted into the region between the storage container 12 and the support surface 14. In FIG. 1, an example in which the drawer dropping-out prevention member 15 is attached near the center of the support surface 14 is shown, but it is supported by the support surface 14 and inserted into a region between the storage container 12 and the support surface 14. As long as the conditions to be obtained are satisfied, the drawer dropout prevention member 15 may be installed in another place.

Next, based on FIG. 2 and FIG. 3, the specific example of the installation state to the support surface 14 of the drawer dropping-out prevention member 15 is demonstrated.
FIG. 2 is an enlarged perspective view of a portion X in FIG. 1 when the drawer dropping-out preventing member is in a locked state.
FIG. 3 is an enlarged perspective view of a portion X in FIG. 1 when the drawer dropping-out preventing member is in an unlocked state.

As shown in FIG. 2, the drawer dropout prevention member 15 is rotatably mounted around the support shaft holes 141 and 151 fixed on the support surface 14.
In the locked state, a part of the drawer dropping-out preventing member 15 is inserted into a region between the storage container 12 and the support surface 14. At this time, the height of the drawer 13 with respect to the storage container 12 is limited by the thickness of the insertion portion. As a result, the drawer 13 cannot be pulled up to a height required for releasing the engagement by the stopper member, and the removal of the drawer 13 from the storage container 12 is locked.

  On the other hand, as shown in FIG. 3, in the state where the drawing-out prevention member 15 is rotated 90 degrees clockwise from the state of FIG. 2 to release the locked state, the region between the storage container 12 and the support surface 14 is removed. The drawer dropout prevention member 15 is not inserted, and the height of the drawer 13 with respect to the storage container 12 is not limited. As a result, the drawer 13 can be removed from the storage container 12 by pulling up the drawer 13 to a height necessary for releasing the engagement by the stopper member.

Next, the structure of the drawer dropout prevention member 15 will be described with reference to FIG.
FIG. 4 is an explanatory view showing the structure of the drawer dropout prevention member of FIG.
4A to 4D are a plan view, a bottom view, a front view, and a right side view, respectively, showing the structure of the drawer dropout prevention member according to the first embodiment of the present invention.

  As shown in FIGS. 4A to 4D, the drawer dropout prevention member 15 includes a long rectangular bottom surface portion 150 and a peripheral surface portion 154 that is supported by the peripheral edge portion of the bottom surface portion 150 and surrounds the bottom surface portion 150. The bottom surface portion 150 has a shaft hole 151 for inserting a support shaft (not shown) through the bottom surface portion 150 at one end in the longitudinal direction, and a detent shaft on the bottom surface of the corner near the shaft hole 151. 152 and a locking projection 153 on the bottom side surface of the corner along the longitudinal direction of the anti-rotation shaft 152.

  The material constituting the drawer dropout prevention member 15 is preferably such that its strength is at least enough to withstand the impact when the drawer 13 is opened. For example, polycarbonate (PC), polystyrene (PS), acrylonitrile, butadiene, Examples thereof include synthetic resins such as styrene (ABS) and metals. Examples of the processing method of the drawer dropout prevention member 15 include molding with a mold. The dimensions of the drawer dropout prevention member 15 will be described later in the description of FIGS.

  The bottom surface portion 150 faces the support surface 14 and rotates and slides the drawer dropout prevention member 15 about a support shaft (not shown) on the support surface 14.

  The support hole 151 is fixed on the support surface 14 by inserting a support shaft (not shown) together with the support hole 141 provided at a predetermined position of the support surface 14. In addition, the drawer dropout prevention member 15 is rotated around the support hole 141. As the support shaft inserted into the support shaft hole 151, a metal screw, a screw, or the like is used.

  The anti-rotation shaft 152 is inserted into the anti-rotation hole 142 (FIG. 5) formed in the support surface 14, and the range of movement thereof is limited by the engagement with the anti-rotation hole 142, so that the drawing-out prevention member This is for limiting the range of 15 rotations. Details of the anti-rotation hole 142 will be described later in the description of FIG.

  The material constituting the rotation prevention shaft 152 is the same as that of the drawer dropping-off prevention member 15. Note that a metal screw, a screw, or the like may be inserted into a hole provided in the drawer dropout prevention member 15 as the rotation preventing shaft 152.

  The locking projection 153 is a hemispherical projection, and engages with a locking recess 143 having a recess corresponding to the projection provided at a predetermined position on the support surface 14, thereby removing the drawer dropout prevention member 15. Is to be locked at a predetermined position. A hemispherical projection may be provided on the surface of the support surface 14, and a recess corresponding to the projection may be provided in a corresponding portion of the drawer dropout prevention member 15. In addition, the drawing-out drop prevention member 15 does not necessarily have the locking projection 153. For example, a drawing piece is provided on the support surface 14, and the drawing piece is prevented from dropping by the engagement between the locking piece and the peripheral surface portion 154. The member 15 may be locked at a predetermined position on the support surface 14.

  The peripheral surface portion 154 is supported by the bottom surface portion 150 and imparts a predetermined thickness to the drawer dropout prevention member 15. The drawer dropout prevention member 15 does not need to have a structure with an open top surface as shown in FIG. 1. For example, when the entire bottom face 150 has a uniform thickness, the drawer dropout prevention member 15 has a predetermined thickness. May be provided. Further, it is not necessary that the entire thickness of the drawer drop-off prevention member 15 is constant, and a structure that is partially inclined at the end portions in the vicinity of the support hole 151 and the detent shaft 152 as shown in FIG. As it has, the thickness may differ with positions. The details of the condition of the thickness of the drawer dropout prevention member 15 will be described later in the description of FIGS.

  In addition, as a modification of the drawer dropout prevention member 15, a configuration in which the positions of the support shaft hole 151 and the rotation preventing shaft 152 are reversed may be employed. Moreover, as long as the conditions described later in FIGS. 6 to 9 are satisfied, the structure may be different from the above.

Next, the structure of the support surface 14 will be described with reference to FIG.
FIG. 5 is a plan view of the main part of the support surface according to the first embodiment of the present invention.

  As shown in FIG. 5, the support shaft hole 141, the rotation shaft 152, and the locking projection 153 correspond to the support shaft hole 151, the rotation prevention shaft 152, and the support projection 14, respectively. Stop holes 142 and locking recesses 143 are provided.

  The support hole 141 has a size corresponding to the support hole 151, and when the shaft (not shown) is inserted in a state where the support holes 141 and 151 are overlapped, the drawing-out dropping prevention member 15 is supported on the support surface 14. Is installed to be rotatable around the axis.

  The anti-rotation hole 142 inserts the anti-rotation shaft 152 into the anti-rotation hole 142 and limits the range of rotation around the axis of the drawing-out prevention member 15 relative to the support surface 14. The anti-rotation hole 142 is formed, for example, by cutting the anti-rotation shaft 152 by the support surface 14 when the drawing-out prevention member 15 is rotated 90 degrees clockwise from the locked state in FIG. 2 to the unlocked state in FIG. The cross-sectional area has a shape equal to the region to be swept.

  The locking recess 143 locks the drawer dropout prevention member 15 on the support surface 14 by engaging with the locking projection 153 in the locked state.

  Next, an example of installation of the drawer dropout prevention member 15 on the support surface 14 will be described with reference to FIGS.

  As a specific method for installing the drawer dropout prevention member 15 on the support surface 14, the support shaft hole 141 and the support shaft hole 151 so that the bottom surface portion 150 of the drawer dropout prevention member 15 and the upper surface of the support surface 14 are in contact with each other. And a support shaft (not shown) is inserted so that the drawer dropout prevention member 15 is rotatably installed on the support surface 14.

First, based on FIG. 6 and FIG. 7, the example of installation to the support surface 14 of the drawer dropping-out prevention member 15 in a locked state is demonstrated.
FIG. 6 is a plan view of a principal part showing the drawer dropout prevention member in the locked state.
FIG. 7 is a cross-sectional view taken along line AA in FIG.

  As shown in FIG. 6, in the locked state, the rotation prevention shaft 152 hits the end of the rotation prevention hole 142 on the storage container 12 side, and a part of the peripheral surface portion 154 is between the storage container 12 and the support surface 14. It will be in the state inserted in the area of. At this time, the locking projection 153 engages with the locking recess 143, and the drawer dropout prevention member 15 is locked on the support surface 14.

  In this case, as shown in FIG. 7, in the locked state, the distance 102 from the central axis of the support shaft holes 141 and 151 to the outside of the peripheral surface portion 154 on the storage container 12 side of the drawer dropout prevention member 15 is the central axis. Is larger than the distance 103 from the storage container 12 to the storage container 12. Therefore, in the locked state, even if the drawer dropout prevention member 15 is to be pulled upward with respect to the storage container 12, the upper portion of the peripheral surface portion 154 contacts the lower portion of the upper surface of the storage container 12, and the thickness 101 of the peripheral surface portion 154 Since the lifting height necessary for releasing the engagement by the stop member is limited to the distance 105, the drawer 13 cannot be taken out from the storage container 12.

  Next, specific conditions for the dimensions of the drawer dropping-out preventing member 15 in which the drawer 13 cannot be removed from the storage container 12 in the locked state will be described. The minimum value of the lifting height of the drawer 13 required for releasing the engagement by the stopper member with respect to the storage container 12 is defined as Hmin. At this time, when the distance 105 from the upper part of the drawer dropout prevention member 15 to the lower part of the upper surface of the storage container 12 is smaller than Hmin, the drawer 13 cannot be taken out from the storage container 12. Here, the distance 105 is the difference between the width 104 of the region between the storage container 12 and the support surface 14 and the thickness 101 of the insertion portion of the drawer dropout prevention member 15. It can be seen that the drawer 13 is locked in the storage container 12 when the sum of the thickness 101 of the insertion portion and Hmin is larger than the width 104 of the region between the storage container 12 and the support surface 14. That is, the thickness 101 of the insertion portion of the drawer dropout prevention member 15 may be set to be larger than the value obtained by subtracting Hmin from the width 104.

  Specifically, for example, when the region between the storage container 12 and the support surface 14 is 10 mm and the minimum height at which the engagement by a stopper member (not shown) is released is 4 mm, the drawer dropout prevention member The thickness of 15 insertion parts is larger than 6 mm, and becomes the range of 10 mm or less.

Next, an installation example of the drawer dropout prevention member 15 at the time of unlocking will be described.
FIG. 8 is a plan view of a principal part showing an installation example of the drawer dropping-out preventing member in the unlocked state.
9 is a cross-sectional view taken along line BB in FIG.

  As shown in FIG. 8, when the lock of the drawer dropout prevention member 15 is released, the drawer dropout prevention member 15 is rotated 90 degrees clockwise. When the anti-rotation shaft 152 abuts against the front end of the anti-rotation hole 142, the peripheral surface portion 154 is located away from the region between the storage container 12 and the support surface 14.

  In this case, as shown in FIG. 9, at the time of unlocking, the distance 102 from the central axis of the support shaft holes 141 and 151 to the outside of the peripheral surface portion 154 on the storage container 12 side of the drawer dropout prevention member 15 is the center. It is smaller than the distance 103 from the shaft to the storage container 12. Therefore, when the unlocking member 15 is pulled upward with respect to the storage container 12 when unlocked, the peripheral surface portion 154 can be lifted without contacting the storage container 12, and the engagement by the stop member can be performed. The lifting height required for release is not limited, and the drawer 13 can be taken out from the storage container 12.

  In this manner, the drawer 13 can be easily locked and released by a simple rotation operation.

10: Drawer device 12: Storage container 13: Drawer 14: Support surface 15: Drawer drop prevention member 141: Support hole 142: Stop hole 151: Support hole 152: Stop shaft

Claims (4)

A drop-off prevention mechanism for preventing the drawer pulled out from the storage container from falling off,
A support member that is provided inside the storage container and supports the drawer in a slidable manner in the front-rear direction, and a pair of engagement pieces provided at corresponding positions on the inside of the storage container and on the outside of the drawer. A sliding engagement portion that restricts sliding forward of the drawer at a predetermined pull-out position by engagement, and lifts the drawer from the support member to a predetermined height or higher to release the engagement; A drawer dropping-off prevention member provided at the top of the
The drawer dropping-off prevention member includes an insertion portion that can be inserted into a region between an upper portion of the drawer and an inner upper portion of the storage container when the drawer is in the drawer position.
The insert, when inserted into the area, have a structure that limits the pulling of the drawer from the supporting member below the predetermined height,
The drawing-out drop prevention member is provided rotatably at the top of the drawing, and includes an insertion portion that can be inserted into the region by the rotation when the drawing-out is in the drawer position,
When the insertion portion is inserted into the region, the drawer dropping-out prevention mechanism that restricts the lifting of the drawer from the support member to less than the predetermined height . The drawer has a support surface provided with a predetermined opening at the top,
The drawer dropping-off prevention member includes an insertion piece that can be inserted into the opening,
2. The drawer according to claim 1 , wherein the opening has a shape and a size that limit the range of rotation within a predetermined range by engagement of the insertion piece and the opening when the insertion piece is inserted. Fall-off prevention mechanism. 3. The drawer dropout prevention mechanism according to claim 2 , wherein the rotation range includes a rotation angle at which the insertion portion is inserted into the region and a rotation angle at which the insertion portion is not inserted, and is a rotation angle of 90 degrees at the maximum. The drawer falling-off prevention member according to any one of claims 1 to 3 .