JP2007185236A - Cabinet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cabinet capable of preventing pull-out of two drawers including simultaneous pull-out prevention by a structure different from before. <P>SOLUTION: Drawers D1, D2 and D3 are provided in multiple stages, drawer pins P1, P2 and P3 are projected from the respective drawers, and a case body is provided with a guide rail 12 extended in a vertical direction. A plurality of movable bodies disposed serially so as to be freely vertically moved along the guide rail are included, they are a lower movable body B1, intermediate movable bodies B2 and B3 and an upper movable body B4 from the bottom, and operation bodies S1, S2 and S3 are respectively pivoted at heights corresponding to the drawer pins to the lower movable body and the intermediate movable bodies. Driven bodies J1, J2 and J3 are pivoted at positions to be engaged with the teeth H of the respective operation bodies to the movable bodies right above the respective movable bodies. Each movable body is provided with a notched part KK to be turned downward and engaged with the drawer pin when the drawer is housed. When the drawer D2 is pulled out, the operation body is turned counterclockwise and turns the driven body J2. Setting is executed so as to increase a distance between respective centers at the time and the pull-out of the drawer D3 is blocked. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cabinet having a plurality of drawers. The cabinet referred to in the present application is used in a broad sense, and includes what is called a wide lateral, and also includes a multistage drawer set integrated with a desk or the like.

In a cabinet in which drawers are stored in a multi-stage manner, if two or more drawers are pulled out, it will become unstable and the risk of falling will increase. Therefore, in order to prevent such a risk of falling, there is a cabinet in which a safety device is devised so that after one drawer is pulled out, no other drawer can be pulled out.
However, this is not sufficient, and under various circumstances, it is not without the case that two drawers are inadvertently pulled out simultaneously. The device of the conventional safety device cannot prevent the two drawers from being pulled out simultaneously. Thus, a structure for preventing this simultaneous drawing is disclosed in Patent Documents 1 and 2 below.
Japanese Utility Model Publication No. 6-13649 JP 2001-342770 A

However, in the structure disclosed in the above-mentioned publication, there are some parts that require a large number of parts and a lot of work and time for assembly work. Further, there is no disclosure of a countermeasure structure for an abnormality in which the simultaneous drawer preventing structural component is not located in a set state for some reason.
Therefore, the problem to be solved by the present invention is to provide a cabinet capable of preventing the drawer of two drawers including simultaneous drawer prevention by a structure different from the structure disclosed in the above publications.
Next, it is to provide a cabinet that does not hinder the drawer from being taken in and out even at the time of the abnormality.
It also provides a cabinet that is unlikely to cause such abnormalities.
Furthermore, the present invention provides a cabinet that can be easily assembled.

In the first aspect of the present invention, a cabinet having two or more drawers provided in a multistage shape, the drawer pins projecting at the same position in the front-rear direction on the sides of each drawer, and the drawer pins in the storage state of each drawer A guide rail extending in the vertical direction is provided on the inner surface of the side portion of the housing, and is arranged in series so as to be movable up and down along the guide rail. The lower movable body corresponding to the lowermost drawer is disposed on the lowermost side, and the intermediate movable bodies are provided on the lowermost corresponding to the respective drawers other than the lowermost stage. An upper movable body is provided immediately above the uppermost intermediate movable body, and an operating body is mounted on each of the lower movable body and the intermediate movable body, and each of the operating bodies extends in the left-right direction. It is supported so that it can rotate around a predetermined range. The operating body in the closed position is provided with a notch that opens downward, and a plurality of teeth are provided at the top, and the distance from the center of the pivot to each tooth varies, The actuating body in the closed position is rotated in the forward direction while the drawer pin is engaged with the notch until halfway when the drawer is pulled forward, and the actuating body in the open position is When the drawn drawer is stored, the cutout portion receives the drawer pin and rotates in the reverse direction while being pushed to the closed position, and the movable body directly above each movable body excluding the upper movable body, A follower body provided with teeth so as to mesh with the teeth of the operating body is provided so as to be rotatable about a pivot extending in the left-right direction, and is a drawing pin engaged with a notch portion of the operating body in the closed position When the operating body rotates in the positive direction by the action of The distance from the pivot center of the actuating body to each tooth and the distance from the pivot center of the follower to each tooth so that the distance between the pivot centers of the actuating body and the follower increases by a predetermined dimension compared to the case. One of the drawers is pulled out between the upper movable body that is set and in the lowest position where all the drawers are stored and the stationary body fixed to the housing. The height from the center position of the drawer pin to the lower end of the notch portion of the working body in the normal closed position where all the drawers are housed is provided. The dimension is larger than a value obtained by subtracting half of the diameter of the drawer pin from the predetermined dimension, and is increased by the predetermined dimension from the position of the drawer pin engaged with the notch of the operating body in the normal closed position. The draw-out pin in which the actuated body in the closed position is engaged with the notch When the actuator moves forward with the drawer and rotates in the forward direction, the center-to-center distance variation due to the engagement between the operating body and the driven body at the rotation angle before the engagement between the drawer pin and the notch is released. Therefore, the cabinet is characterized in that the size of the gap is restricted to a size at which the upper movable body comes into contact with the stop body.
Fixing to a certain object, such as fixing to a housing, includes not only fixing directly to the object but also fixing indirectly via another member. The same is true even if the fixation is bias.
Further, the half of the diameter of the drawer pin means the dimension of the upper half of the pin when the pin cross section is not circular, for example, in the case of a square shape.

In the second aspect of the present invention, an inclined surface that is inclined downward toward the back side is provided at the front edge of the casing of the operating body in the closed position, and the upper end position of the inclined surface is the drawer of the corresponding drawer. It is located above the height of the pin, the inclined surface reaches the lower end of the notch, and the size of the gap is from the center position of the extractor pin to the lower end of the notch of the working body in the normal closed position The cabinet according to the first aspect of the present invention is set to a value equal to or higher than a value obtained by adding half of the diameter of the drawer pin to the height dimension.
The inclination of the inclined surface may be a straight line, a curve, a combination thereof, or a combination of a plurality of straight lines or curves. In addition, the fact that the inclined surface reaches the lower end of the notch is a condition that allows the movable pin to be pushed up together with the operating body along the inclined surface here without entering the cutout portion without being caught in the middle, and to enter the notch, And that's enough. Therefore, the inclined surface should not be interpreted more restrictively than necessary.

  In the third invention, the fluctuation curve of the distance between the pivot centers due to the meshing of the operating body and the driven body according to the rotation of the operating body in the positive direction increases from the closed position to the middle, and then decreases. A cabinet according to the first or second invention reaching the open position is provided.

  In the fourth invention, the guide rail has a substantially rectangular or C-shaped cross section, the lower movable body is an operating body, the intermediate movable body is an operating body and a follower, and the upper movable body is The cabinet according to any one of the first to third inventions, in which the driven bodies are respectively mounted at predetermined positions, and each movable body is inserted from one end side of the guide rail and is stored in the guide rail to form a unit. provide.

  In the fifth invention, the upper and lower movable bodies described in the respective inventions become the lower movable bodies, and the elastic member that constantly urges the lower movable bodies upwards. A cabinet according to any one of the first to fourth inventions is provided.

In the first invention, when a certain drawer is pulled out, the movable bodies corresponding to all the drawers located on the upper side try to rise by a predetermined dimension. However, the movable bodies arranged in series are positioned at the top of the movable bodies. When a single drawer is pulled out, there is a gap of a predetermined dimension or more, which is the ascending distance of the movable body above the movable body corresponding to the drawer, between the upper movable body and the stopping body. The movable body can be raised and the drawer can be pulled out. In addition, the height dimension from the center position of the drawer pin to the lower end of the notch of the working body in the normal closed position where all the drawers are stored is half the diameter of the drawer pin from the predetermined dimension. Since it is larger than the subtracted value, even if the movable body is raised, the drawing pin is not detached from the cutout portion of the upper working body, and the engagement can be maintained. Even if the second drawer located on the upper side of the drawn drawer is further pulled out, it is raised by the predetermined dimension from the position of the drawer pin engaged with the cutout portion of the operating body in the normal closed position. When the draw-out pin engaged with the notch moves forward with the draw-out and rotates in the forward direction, the operating body in the closed position rotates at a rotation angle before the draw-out pin and the notch are disengaged. The size of the gap is regulated so that the upper movable body abuts on the stop body due to the change in the distance between the pivot centers due to the engagement between the operating body and the driven body. It cannot be raised any more, and further rotation of the operating body is restricted. Therefore, the drawing pin and the cutout portion of the second drawing cannot be disengaged, so that the second drawing cannot be pulled out.
This also means that, even when trying to pull out the first and second drawers (substantially), when the drawers are pulled out, the movable bodies above the movable bodies corresponding to the respective drawers are pushed up. Since there is no gap (a gap between the upper movable body and the stop body) sufficient to absorb the two pushed-up amounts, it is possible to prevent simultaneous drawing of the two drawers.
Also, when retracting the drawn drawer, the cutout portion of the operating body in the open position can accept the drawer pin and rotate in the reverse direction (in the closed position direction), so that the operating body is returned to the original closed position. The drawer can be stored.

  In the second invention, after pulling out the drawer, if for some reason the operating body is inadvertently rotated in the closed position direction from the open position where it should originally hold its position, or the factory for assembling the cabinet At the end, the drawer is inserted, but due to the assembly, the operating body may not be in the open position at the time of insertion. As the drawer is housed, the drawer pin needs to be able to push up the movable body together with the operating body while coming into contact with the inclined surface of the operating body and enter the cutout portion of the operating body. For this reason, the clearance dimension between the upper movable body and the stop body states that it is necessary to ensure the above-mentioned push-up amount.

  In the third invention, instead of maximizing the distance between the centers of both pivots when the operating body comes to the open position, the dimensional structure has the maximum value in the middle of the rotation. Even if the corresponding operating body attempts to rotate in the reverse direction (in the direction of the closed position) for some reason, it requires reverse rotation energy that exceeds the maximum value portion. Accordingly, such reverse rotation is less likely to occur, and the open position is stabilized.

  In the fourth aspect of the invention, each of the parts that are relatively small with respect to the casing and the drawer are unitized and assembled, so that the assembling work becomes very simple.

  5th invention is the structure which turned the up-down direction reversed with respect to each above invention, and when a drawer is pulled out, a movable body will be moved below, but the effect is the same as each above invention. However, in order to prevent each movable body from being inadvertently lowered due to gravity, an elastic member such as a spring that biases upward from below is essential.

  FIG. 1 is a side perspective view of a cabinet according to the present invention, and FIG. 2 is an enlarged view of a main part thereof. Three drawers D1, D2, and D3 are accommodated in the housing 10. A long and narrow guide rail 12 is mounted and fixed in the vertical direction between the rear side of the housing side and the drawer side. As shown in FIG. 4, the cross-section of the guide rail in this example along the arrow line DD is a substantially rectangular shape having an opening in the front wall of the rectangular wall. Also, it may be C-shaped. In this guide rail, four movable bodies B1, B2, B3, B4 are arranged in series so as to be slidable in the vertical direction. The lowermost movable body B1, the intermediate movable body B2 directly above it, and the intermediate movable body B3 directly above it are provided on the side portions of the corresponding drawers D1, D2, D3 and project in the left-right direction. Actuators S1, S2, and S3 are pivotally supported around respective pivot axes C1, C2, and C3 at respective height positions corresponding to the drawer pins P1, P2, and P3. The pivot C1 is attached to the lower movable body B1, the pivot C2 is attached to the intermediate movable body B2, and the pivot C3 is attached to the intermediate movable body B3. In the all-drawer storage state, the front-rear direction positions of the respective drawer pins are the same, and the front-rear direction positions of the pivots of the operating bodies are also the same.

  Moreover, the row | line | column of the tooth | gear H is provided in the upper periphery part of each operating body, and the movable body directly on the movable body which is supporting each each has the position which meshes with the tooth | gear H of each operating body, The followers J1, J2, and J3 are pivotally supported so as to be rotatable around the pivot axes C1 ′, C2 ′, and C3 ′, respectively. The pivot C1 'is attached to the intermediate movable body B2, the pivot C2' is attached to the intermediate movable body B3, and the pivot C3 'is attached to the upper movable body B4. Each actuating body is provided with a notch KK on the opposite side to the dentition in the radial direction with respect to the pivot, and in the state in which the drawer is housed like the actuating body S1 in FIG. , Open downward, and the corresponding drawer pin is engaged. The driven body J3 that meshes with the tooth row of the operating body S3 corresponding to the uppermost drawer D3 is pivotally supported on the lower part of the upper movable body B4.

  At a position above the upper movable body B4, a stop body T that is also a terminal portion of the guide rail 12 is fixed to the guide rail, that is, to the housing. As clearly shown in FIG. 5, a gap of an appropriate dimension ΔL is provided between the upper end B4E of the upper movable body B4 in a state where all the drawers are accommodated and the stop body T. Furthermore, a locking device with various well-known mechanisms is provided so that the entire drawer can be locked so that it cannot be pulled out while being retracted, and can be unlocked. In the unlocked state, the tip of the locking device is located at the depressed central position KB of the lower end edge of the stop body T, and in the locked state, the upper movable body upper end edge B4E when all the drawers are stored. It is located at the center position KB ′ where The following description is an explanation in the unlocked state.

  FIG. 2 shows an enlarged view of a pair of operating bodies and followers in the same side view as FIG. 1 in a state where all the drawers are stored. Actually, it is the same as the drawing of the working body and the follower corresponding to the lowermost drawer D1 in FIG. The center of the pivot C1 of the operating body S1 and the center of the pivot C1 ′ of the follower J1 are on the vertical line, and the front side wall surface KKA extending in the vertical direction of the notch KK is located on the extension line. Yes. The lower region of the rear side wall surface is formed on an inclined surface KKB that is inclined downward and rearward as shown in the figure. The drawer pin P1 of the drawer D1 is engaged with a position P1 indicated by a solid line in the notch. The distance L between the centers of both pivots is the shortest distance L0 in the state of FIG. The distance (diameter) R from the center of the pivot C1 to the tooth H is sequentially increased from the first tooth H1 to the eleventh tooth H11. On the other hand, the follower J1 is formed in a symmetrical shape with respect to the center line CL indicated by a one-dot chain line, and the distance (diameter) r from the center of the pivot C1 ′ to the tooth h is from the first tooth h1. Sequentially increases to the center line, but then gradually decreases.

  The height dimension from the center position of the drawer pin P1 to the lower end of the front side wall surface KKA is Γ. A groove M bent in a fan shape centering on the center of the pivot C1 is formed on the back side of the working body in the drawing, and a locking body K provided on the corresponding movable body is engaged with the groove. Accordingly, it can be rotated within a range between a closed position shown in FIG. 2 and an open position shown in FIG.

FIG. 1 is a diagram showing a state in which the second-stage drawer D2 from the bottom is slightly pulled out and the corresponding operating body S2 is set to the open position. That is, starting from the same closed position as in FIG. 2, the drawer pin P2 presses the front side wall surface KKA of the notch KK of the operating body S2, and the operating body S2 is rotated in the forward direction, which is counterclockwise in the drawing. In this state, the drawer pin is removed from the notch and the operating body is in the open position. FIG. 3 shows an enlarged view of the open position.
By this pulling operation, the center distance L between the pivot axes C2 and C2 ′ is longer than the shortest distance L0 by a predetermined length Δ. The operating body S2 located below the driven body J2 is pivotally supported by the intermediate movable body B2, and there is no room for lowering. However, the gap dimension ΔL between the upper movable body B4 and the stop body T is determined as follows. Since it is formed larger than the predetermined length Δ by a dimension δ (a dimension smaller than Δ), the driven body J2 moves upward together with the intermediate movable body B3 on which it is supported while pushing up the upper movable body B4. it can.

  For this reason, the relative positional relationship between the cutout portion KK of the operating body S3 corresponding to the drawer D3 and the drawer pin P3 will be described with reference to FIG. 2. The drawer pin P3 in the case where all the drawers are accommodated. It becomes a position P3 indicated by a two-dot chain line that is relatively lower than the position (position (P3) indicated by a solid line) by a distance of the predetermined length Δ. The height dimension Γ of the front side wall surface KKA is larger than the predetermined length Δ (a value obtained by subtracting the radius of the drawer pin), and the engagement between the drawer pin P3 and the notch KK is maintained. .

  If the drawer D3 is further pulled out after the drawer D2 is pulled out, the drawer pin P3 is engaged with the notch KK of the operating body S3 to further push up the upper movable body B4 while rotating the operating body in the forward direction. However, in the present invention, before turning until the engagement is disengaged, the initial distance (distance at the closed position) L0 of the distance L between the pivot axes of the actuating body S3 and the driven body J3 is increased. The diameter R of the actuating body and the diameter r of the follower are designed so as to fill the remaining gap δ.

  That is, in any combination of the actuating body and the driven body, the horizontal axis represents the rotation angle θ (degrees) from the closed position to the open position of the actuating body, and the vertical axis represents the distance between the centers of the two axes. A variation graph of the distance L (mm) is shown in FIG. The numerical value on the vertical axis is the variation distance added to the center-to-center distance L0 at the closed position. The actuating body S3 can only rotate to a rotation angle θδ at which the distance L between the pivot axes in FIG. 6 is L0 + δ, and the drawer D3 cannot be pulled out at that position. That is, after one drawer is pulled out, the other drawers cannot be pulled out.

Further, in this embodiment, the diameter r up to each tooth h of the follower is maximized by the teeth on the center line CL, and then formed small with a predetermined reduction rate. When meshing with the teeth of the body, the distance L between the pivot centers is maximized. The maximum distance in this example is designed to be L0 + 6.4 mm. Since the graph has a mountain shape in this way, it is difficult for the operating body in the open position to inadvertently rotate backward in the direction of the closed position. However, the graph may be designed to rise to the right. Furthermore, since the diameter R to each tooth H of the operating body is formed larger than the diameter r to each tooth h of the driven body, each movable body tends to fall by gravity even in the open position. Even if force acts on the operating body via the driven body, the operating body is difficult to rotate in the closed position direction.
Furthermore, in the structure of the present invention, the fact that the above-mentioned two drawers cannot be pulled out in sequence also means that the two drawers cannot be pulled out at the same time.

  In addition, as can be seen from the operating body in the open position in FIG. 3, the lower region of the rear side wall surface with respect to the front side wall surface KKA of the notch KK is an inclined surface KKB formed so as to be further away from the front side wall surface. Therefore, when one of the drawers is pulled out to move the operating body to the open position and then the drawer is stored, the drawer pin of that drawer can abut against the inclined surface KKB of the notch, thereby moving the operating body in the reverse direction. It can be rotated to the closed position and put into the storage state.

  Further, in this embodiment example, after the drawer is pulled out to bring the operating body to the open position, if the operating body is rotated in the direction of the closed position for some reason, assembly in the factory In this case, the drawer can be stored even in the case of an abnormality such as when the corresponding operating body is rotating in the direction of the closed position instead of the open position, even before the drawer is stored. This will be explained with reference to FIG. 2, for example, when the drawer D1 is stored, the drawer pin P1 abuts the front edge surface SK that is inclined downward and rearward on the front side of the operating body S1, thereby moving the operating body. It needs to be pushed up with the body. Therefore, the upper end SK1 of the front side edge surface SK needs to be set to a position higher than the contact position TP of the drawer pin P1 'indicated by a two-dot chain line in contact with the front side edge surface. Regarding the height E from the upper end of the drawer pin to the lower end of the front wall surface KKA of the notch, the drawer pin pushes up the movable body along the front side edge surface and pushes the movable body in accordance with the drawer operation. It is necessary to set the gap ΔL to be equal to or greater than the height dimension E in order to allow entry into the part.

  Although the elastic member is not mentioned in the above description of the embodiment, a spring member or the like that acts between the upper movable body and the housing or the stop body and applies an urging force that always pushes the upper movable body B4 downward. When the elastic member B is provided, the normal engagement between each operating body and the driven body is ensured, and the operation of the apparatus becomes smooth.

  The lower movable body B1 is mounted with the operating body S1, the intermediate movable body B2 is mounted with the lower driven body J1, the upper body with the operating body S2, and the upper intermediate movable body B3 is mounted with the lower driven body J2. Are mounted on the upper movable body B4, the lower movable body J4 is mounted on the lower movable body B4, and each movable body is inserted from one end of the guide rail into the guide rail to form a unit. When assembling the cabinet, it can be assembled quickly and easily, saving time.

  The above description is an embodiment in the case of a cabinet with the upper side in FIG. 1 as the upper side, but it is also possible to configure the upper side in FIG. 1 as the lower side of the cabinet. However, in this case, the elastic member B such as a spring member is essential.

  Below, the example dimensions, such as each main gap, are illustrated. An explanation will be given assuming that the upper side of FIG. 1 is the upper side of the cabinet. The diameter of the drawer pin is 5 mm, and when the drawer is pulled out and the operating body is turned from the closed position to the open position, the movable body rises to a predetermined length Δ of 6.2 mm and all the drawers are stored. The gap dimension ΔL between the upper end B4E of the upper movable body B4 and the stop body T is 9.7 mm, that is, the dimension δ is 3.5 mm, and the front side wall surface of the notch from the upper end of the drawer pin when the drawer is stowed in an abnormal state The height E to the lower end of the KKA is 9.5 mm, the height dimension Γ from the center position of the drawer pin to the lower end of the front side wall surface KKA in the state where all the drawers are stored is 7 mm, and the closed position and the open position (see FIG. 6). The rotation angle of the working body between the positions is 66 °, and the angle θδ of FIG. 6 is 21 ° (the rotation angle until the drawing pin P3 of FIG. 1 is disengaged from the notch of the working body S3 is 35.4 °) , Smaller than this angle). In this way, the present application cabinet can be designed.

  The present invention can be used for a cabinet.

FIG. 1 is a side perspective view of a cabinet according to the present invention. FIG. 2 is an enlarged view of a main part of FIG. FIG. 3 is an enlarged view of another main part of FIG. FIG. 4 is an enlarged cross-sectional view taken along line DD in FIG. FIG. 5 is an enlarged view of another main part of FIG. FIG. 6 is a graph showing fluctuations in the distance between the pivot centers of the operating body and the driven body.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Housing | casing 12 Guide rail B Elastic members, such as a spring member B1 Lower movable body B2, B3 Intermediate movable body B4 Upper movable body C1, C2, C3 Actuator pivot axis C1 ', C2', C3 'Follower pivot axis D1 , D2, D3 Extractor J1, J2, J3 Follower KK Notch KKA Front wall surface of notch KKB Inclined surface of rear wall surface of notch L L Distance between pivot center of actuator and follower P1, P2, P3 Extractor pin S1 , S2, S3 Actuating body SK Inclined front edge surface of actuating body T Stopping body Δ Increase in L when rotating from closed position to open position (predetermined dimension)
ΔL Clearance between the upper movable body and the stop body when all the drawers are stored

Claims (5)

A cabinet in which two or more drawers (D1, D2, D3) are provided in a multi-stage shape,
Drawer pins (P1, P2, P3) protrude from the sides of each drawer at the same position in the front-rear direction.
A guide rail (12) extending in the vertical direction is provided on the inner surface side of the side of the housing at a position corresponding to the front-rear direction position of the drawer pin in the retracted state of each drawer.
It has a plurality of movable bodies arranged in series so as to be movable up and down along the guide rail, and a lower movable body (B1) corresponding to the lowermost drawer is arranged on the lowermost side, on which Is provided with each intermediate movable body (B2, B3) corresponding to each drawer other than the lowermost stage, and an upper movable body (B4) is provided immediately above the uppermost intermediate movable body,
Each of the lower movable body and the intermediate movable body is equipped with an operating body (S1, S2, S3), and each operating body rotates within a predetermined range around a pivot (C1, C2, C3) extending in the left-right direction. The operating body that is pivotally supported and in the closed position in which the drawer is housed is provided with a notch (KK) that opens downward, and a plurality of teeth are provided on the upper part. The distance (R) from the center of the pivot to each tooth has changed,
The actuating body in the closed position is rotated in the forward direction while the drawer pin is engaged with the cutout portion until halfway when the drawer is withdrawn forward, and then the actuating body in the open position. When storing the drawer that has been pulled out, the cutout portion receives the drawer pin and is pushed and rotated in the opposite direction to the closed position.
The movable body directly above each movable body excluding the upper movable body is provided with followers (J1, J2, J3) provided with teeth (h) so as to mesh with the teeth of the actuating body. (C1 ′, C2 ′, C3 ′) are provided to be rotatable around,
When the operating body rotates in the forward direction and reaches the open position by the action of the drawing pin engaged with the notch of the operating body in the closed position, the operating body and the follower are compared with those in the closed position. The distance (R) from the pivot center of the actuating body to each tooth and the distance (r) from the pivot center of the follower to each tooth so that the distance (L) between the pivot axes of the body increases by a predetermined dimension (Δ). And set
When one of the drawers is pulled out between the upper movable body at the lowest position where all the drawers are stored and the stop body (T) fixed to the housing, A gap having a dimension (ΔL) equal to or greater than the predetermined dimension is provided,
The height dimension (Γ) from the center position of the drawer pin to the lower end of the notch of the working body in the normal closed position where all the drawers are stored is from the predetermined dimension (Δ) to Greater than half of the diameter minus
The actuating body (S3) in the closed position, which is raised by the predetermined dimension (Δ) from the position of the drawing pin engaged with the notch in the actuating body in the normal closed position, engages with the notch. When the drawer pin (P3) is moved forward together with the drawer and is rotated in the forward direction, the operating body and the follower are rotated at the rotation angle (θδ) before the engagement between the drawer pin and the notch is released. The cabinet is characterized in that the size (ΔL) of the gap is restricted to a size in which the upper movable body comes into contact with the stop body due to a change in the distance (L) between the centers of the two pivots due to the meshing. An inclined surface that is inclined downward toward the back side is provided at an edge on the front side of the casing in the operating body in the closed position, and the upper end position of the inclined surface is equal to or higher than the height position of the drawer pin of the corresponding drawer. The inclined surface reaches the lower end of the notch,
The dimension (ΔL) of the gap is a value obtained by adding half of the diameter of the drawer pin to the height dimension (Γ) from the center position of the drawer pin to the lower end of the notch of the working body in the normal closed position (E 2) The cabinet according to claim 1.   The fluctuation curve of the distance between the pivot axes due to the meshing of the operating body and the driven body according to the forward rotation of the operating body increases from the closed position to the middle, and then decreases to the open position. The cabinet according to 1 or 2.   The cross-sectional shape of the guide rail is substantially rectangular or C-shaped. The lower movable body has an operating body, the intermediate movable body has an operating body and a follower, and the upper movable body has a follower. The cabinet according to any one of claims 1 to 3, wherein the cabinet is mounted at a position, and each of the movable bodies is inserted from one end side of the guide rail and is stored in the guide rail to form a unit.   According to the first to fourth aspects, the upper movable body described in each claim is a lower movable body, and an elastic member that constantly biases the lower movable body upward is provided. The cabinet according to any one of claims 1 to 4, characterized in.

Images