JP2001275766A - Cabinet with device latching safely - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cabinet with a device latching safely which does not contain any catches as parts of the device. SOLUTION: The cabinet is provided with a pole for each drawer, supporting posts 14, which can move up and down against the cabinet body 10 of the cabinet, blocks with inclined grooves on the supporting posts conforming to each pole, and a sustaining system which sustains the pole moved to a position for latching at the position and releases the pole when a certain amount of power is added to it. The sustaining system is furnished with a hole LH for engaging on the supporting post 14 or a part TB sustained by the supporting post 14, and a part 22 for engaging which works through the locking system and is secured with the hole LH for engaging. The hole LH for engaging has a shape to allow the part 22 for engaging to move up and down for a certain extent and is equipped with means CS, KS to add power to resist against relative up-and-down movements made by the part 22 inside the hole LH when the part 22 moves from a position for latching to the normal position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cabinet having multiple drawers. The cabinet referred to in the present application is used in a broad sense, and includes what is called a wide lateral in the cabinet, and also includes a multi-stage drawer set integrated with a desk or the like.

[0002]

2. Description of the Related Art In a cabinet in which drawers are stored in a multi-stage manner, the more two or more drawers are pulled out, the more unstable the drawer becomes and the greater the danger of falling. Therefore,
In order to prevent such a risk of overturning, there is a cabinet provided with a safety lock so that another drawer cannot be drawn out after one drawer is drawn out. For example,
Utility model registration No. 257643 in which the applicant is the right holder
There is a gazette of the issue.

[0003]

However, in the structure disclosed in the above-mentioned publication, a part called a catch member is required separately from the column (operation plate), and there is room for improvement in the number of parts. Also, the assembly is not always easy. Therefore, an object of the present invention is to provide a cabinet with a safety locking device that does not use a catch member. It is another object of the present invention to provide a cabinet with a safety locking device that can be easily unitized and easy to assemble. Still another object of the present invention is to provide a cabinet with a safety locking device having a structure that cannot be locked accidentally after the drawer is pulled out.

[0004]

Means for Solving the Problems In view of the above object, Claim 1
In, a plurality of drawers, a drawer side guide member provided in each drawer, a column movable vertically with respect to the cabinet body, and provided on the column corresponding to each drawer side guide member, From the position, the post can be engaged with the drawer side guide member when the drawer is withdrawn, and the post can be moved to a locking position to maintain the drawer in the storage position in the storage position, and the drawer is already drawn. When storing the drawer, the support side guide member that applies a force to return the support column to the original normal position by engagement with the drawer side guide member, and the support column that has moved to the locking position is held at that position, A cabinet having a holding mechanism for releasing the holding against a predetermined force or more for returning the support to the direction of the original position, wherein in the holding mechanism, an engagement hole is formed in the support or a member held by the support. Provided and locking machine An engaging member that operates through the engaging hole is engaged with the engaging hole, and the engaging hole is shaped so that the engaging member can move a predetermined amount in the vertical direction, and at least from the locking position to the normal position. The present invention provides a cabinet with a safety locking device, characterized by comprising: urging means for imparting resistance to vertical movement of the engaging member in the engaging hole when the member is moved. Even if the strut with the strut-side guide member attempts to return to the normal position from the locked position, the urging means applies a resistive force. Therefore, unless a force greater than this resistive force is applied, the strut will be locked. Held in position. Therefore, the drawer in the storage position is held in that position,
It is safe without accidentally popping out. Also, the holding mechanism may be provided on the column so as to move with the column,
In production, it can be unitized with the support, and thereafter, it is only necessary to engage the engaging member that operates via the locking mechanism with the engaging hole.

According to a second aspect of the present invention, the urging means includes an operating member having a cam surface which comes into contact with the engaging member both when the column is moved upward and when the column is moved downward, and the operating member is biased. The operating member and the spring member are provided in a member held by the support and inserted and disposed in a guide hole communicating with the engagement hole, and the spring member connects the operating member to the guide hole. It is configured to be urged along the guide direction. Since the operating member and the spring member of the urging means are inserted into the guide holes of the member held by the column, they can be easily unitized with respect to the column in manufacturing, and can be easily incorporated and assembled simply by inserting. In addition, the cam surface of the operating member comes into contact with the engaging member via the engaging hole in any of the vertical movements of the column, so that the column is pressed against the urging force of the spring member that is urging the operating member. It moves in opposition, and a sense of moderation is obtained.

According to the third aspect, when the key is locked and rotated,
A locking mechanism for rotating the engaging member about a position deviated from the center of the member; and a member for locking a portion where the engaging member is located in a state where the support is moved to a locking position in an unlocked state. The cabinet with a safety locking device according to claim 1 or 2, wherein a hole width is smaller than a turning radius of the engaging member. When any one of the drawers is pulled out, the drawer-side guide member provided on the drawer engages with the support-side guide member provided on the support to move the support to the locking position. In this state, since the width of the engagement hole of the portion engaged with the engagement member is smaller than the rotation radius of the engagement member, at this position, the engagement member rotates necessary for locking via the locking mechanism. Can not. Accordingly, it is possible to prevent the lock from being erroneously locked in a state where the drawer is pulled out, and it is possible to prevent the locking mechanism from being damaged by forcibly storing the drawer that has been drawn in the related art, which was lockable in such a case. .

According to a fourth aspect of the present invention, the engaging hole has an L-shape having upper and lower holes extending vertically, and the width of the upper and lower holes is substantially equal to the width of the engaging portion of the engaging member. 4. A cabinet with a safety locking device according to claim 1, which is the same. Since the width of the upper and lower holes is substantially the same as the width of the engaging portion of the engaging member, when the column moves in the vertical direction, the engaging member itself serves as a guide for column movement, and It is not necessary to provide a guide for moving the support up and down, and the number of parts can be reduced. Since the engagement hole is L-shaped, rotation of the engagement member during locking is possible.

[0008]

FIG. 1 is a perspective view of a four-stage cabinet as an example of a cabinet according to the present invention. In the cabinet body 10 forming the outer frame, the drawers 12A, 12B, 12C, and 12D are lined up in the vertical direction in a multi-stage manner from the uppermost stage to the lowermost stage. Inside the side of the cabinet body, between the side of the drawer, and vertically movable with respect to the cabinet body, from the uppermost drawer side to the lowermost drawer side. Protrusions 14, 14 'of length are disposed on the left and right. The mechanism described below may be provided with only one support, but in this embodiment, the mechanism is provided on the left and right while maintaining the right and left balance and aiming for smooth drawing operation. However, only one of them can contribute to cost reduction. In the following, the support 1 shown on the left side of FIG.
Only the mechanism in the vicinity of 4 will be described, but the same applies to the right side.

As will be described in the following description, from the top, on the side of each drawer, a laterally protruding rod member (corresponding to a drawer side guide member) 16A, 16B, 16C,
16D is mounted. On the other hand, inclined groove block bodies (corresponding to support-side guide members) 14A, 14B, 14C, and 14D are attached to the support 14 in order from the top at height positions corresponding to the respective rod members.

In FIG. 2, the vicinity of the lower portion of the column 14 is omitted, but the upper assembly is shown in an exploded view. The support 14 is a member obtained by bending a sheet metal into a U-shape, and the opening 14HA,
14HB, 14HC, and 14HD are provided. Since each inclined groove block has the same form, the block 14B corresponding to the second drawer 12B from the top will be described. In a mounted state, the groove 14BK has an inclined groove 14BK in a direction descending from the back side to the front, a hole 14BH in an upper predetermined position, and a vertical hole 1BK in a lower predetermined position.
4BH 'is provided.

On the side of the block body facing the column 14, engaging feet L1 and L2 are projected toward the column. This pair of feet has both flange portions 1 of a U-shaped support.
4F1 and 14F2 are held by these so as to hold them. In addition, a retreat member 14B described later is provided between the two feet.
T and a guide foot L for guiding the vertical movement of the regulating member 14BR
K is provided. This block is an integrated resin product.

The retracting member 14BT is a receiving portion having a hole 14BTH for receiving a lower end portion of the connecting rod member AB, which will be described later, and is a portion on the front right side in FIG. 2, and is in contact with the rod member 16B. It has a cam portion BH. Also,
The restricting member 14BR has a receiving portion having a hole for receiving an upper end portion of the connecting rod member BC, which will be described later, and a portion on the front right side in FIG. 2, and the upper surface is substantially parallel to the lower wall surface of the inclined groove of the block body. And a regulating portion BH ′ having an inclined surface 14 BRK that is substantially flush with the lower wall surface when assembled to the block body.
have.

The evacuation member 14B is located between the foot L2 and the guide foot LK from the other side of the block body in FIG.
T is assembled such that the tip of the cam portion BH projects outside from the hole 14BH, and is positioned below the hole so that the regulating portion BH 'of the regulating member 14BR enters the hole 14BH'. Each of the receiving portions on the other side of the retreating member and the regulating member is guided to move up and down by engagement with the guide foot LK.

The block body 14B incorporating the retracting member and the regulating member as described above is provided in the hole 14HB of the column.
The receiving area of each member held by the guide foot is inserted together with the guide foot LK, and each receiving area is positioned between both flange portions of the U-shaped support. The block body 14B is held so as to move up and down together with the column by the holding action of the two feet L1 and L2 and the insertion and placement in the hole 14HB.
The same applies to the block body 14C corresponding to the drawer 12C, but the block body 14A corresponding to the uppermost drawer includes:
No evacuation member is required, only the regulating member 14AR is incorporated, and the block body 14D corresponding to the lowermost drawer is
Since no regulating member is required, only the retreat member 14DT (not shown) is incorporated.

Thus, between the flange portions of the columns, the restricting member 14AR incorporated in the block 14A and the retreating member 14 incorporated in the block 14B thereunder.
The connecting rod member AB is connected to the BT. Similarly, the connecting rod member BC is connected between the restricting member 14BR and the retreating member 14CT incorporated in the block body 14C below the restricting member 14BR, and the restricting member 14CR of the block body 14C (not shown in FIG. 2). The connecting rod member CD is connected to a retracting member 14DT (not shown) incorporated in the block body 14D below the connecting member.

For each connecting rod member, a restricting member provided at the upper end thereof and a retreating member provided at the lower end thereof are collectively referred to as a connected body, and the members of the connected body are vertically joined together. Moving. Although they may be together, they may be completely simultaneous,
Almost simultaneously. That is, if the regulating member and the evacuation member are fixed to the connecting rod member by bonding or the like, it can be said that they are completely simultaneous. If there is some play in which the ends of the members move up and down somewhat, some delay may occur, but at about the same time and this may be acceptable.

A predetermined hole 14K is provided in a flange portion at an upper end portion of the column 14, and is pushed into the engagement portion TBK of a side portion of the holding member TB so as to be locked, and mounted on the column. A hole TH is provided on a side portion of the holding member TB, into which a coil spring CS and an operating member KB are inserted. A cam surface K is provided at a predetermined position on the operating member KB.
S is provided, and in the assembled state, the coil spring urges the operating member to the left in FIG. The hole TH extends in a direction substantially perpendicular to the longitudinal direction of the column when the holding member is mounted on the column, and guides the movement of the operating member KB in this direction. An L-shaped engagement hole LH is provided at a predetermined position on the front surface of the holding member TB.

The operation of the above structure when the drawer is pulled out will be described below. FIG. 3 is a diagram for explaining the operation of the connected body and the like, taking the operation at the time of pulling out the drawer 12C as an example.
(A) is a block body 1 when each drawer is in a stored state.
It is a side view of the state of the area | region over 4B and 14C. Pulling out the drawer 12C means that the rod member 16C protruding to the side moves to the left in FIG. In FIG. 3, the hatched area of each member is located in the inclined groove of each block body, and indicates a portion to be engaged if each rod member passes through each inclined groove.

In the state shown in FIG. 3 (a), the restricting member at the lower position of each block body and the retracting member at the upper position are in contact with each other at the lower wall position of the inclined groove (also the position of the inclined surface of the restricting member). In contact. If the drawer 12C is slightly pulled out from this (a), the state shown in (b) is obtained. That is, the upper wall surface of the inclined groove 14CK inclined forward is pressed, and the block body 14C is pushed up according to the amount of the pulled-out portion. The support 14 is a block 14
Since the column 14 moves up and down together with C, the column 14 rises by that amount.

In addition, the rod member 16C is provided with a retracting member 14C.
It is in contact with the lower surface of T. For this reason, the retreat member 14CT
Is regulated upward by that amount, and the regulating member 14 incorporated in the upper block body 14B via the connecting rod member BC.
The BR rises by that amount, and also pushes up the retracting member 14BT incorporated in the block body 14B. Thus, the connecting rod member AB is also pushed up, and the regulating member 14AR of the block body 14A is pushed up by that amount.

(C) shows a state in which the drawer is further pulled out. The column 14 further rises via the block body 14C, and the retreating member 14CT and each member of the connecting body above it also further rise. Each of the regulating members 14B of all the blocks 14B and 14A above the block 14C is in a state where the inclined groove 14CK is almost completely opened.
R and 14AR are in a state of closing each inclined groove of the block bodies 14B and 14A. If the drawer 12C is further pulled out from this (c), the block body 14C is pushed up to the uppermost position and can be completely pulled out.

As shown in FIG. 6 (c) for the description of the holding mechanism described later, the column is held at this uppermost position.
This upper position is the locking position. After the drawer is pulled out in this way, each connected body descends by the action of gravity and returns to its original position relative to the block body. In order to further increase the reliability of this return, one end of a biasing member such as a coil spring is connected to one of the members of each connection body, and the other end is connected to a support or each block body, and is always downward. What is necessary is just to make it the structure which energizes.

As described above, if one drawer 12C is pulled out, the column is held at the locking position. Therefore, even if any other drawer is to be pulled out, each block body is raised together with the column. The rod member cannot enter the inclined groove of each block body. That is, other drawers cannot be drawn. One state where the rod member cannot enter the inclined groove of the block body is shown in FIG.

Conversely, when storing the drawer 12C, the rod member 16C presses the lower wall surface of the inclined groove 14CK,
With this force, the holding mechanism releases the holding force, and the support 1
Because 4 goes down. Storage becomes possible. Although the above-described operation relationship between the drawer and the support is within the range of the related art, the above-described operation of each connecting body, which is the mechanism of the present application, is based on the conventional operation of the drawer and the support (and each block). It does not disturb the relationship at all and guarantees conventional operation. In other words, the present application has a structure in which a connector is added to the conventional basic structure. In that sense, the present application is basically based on a structure that has been empirically obtained with reliability. It can be said that the operation reliability is high.

Next, with reference to FIG. 4, it will be described that two drawers cannot be drawn simultaneously (including almost simultaneously). The relationship between the rod member 16C and the retracting member 14CT in FIG. 4A is substantially the same as the state in FIG. 3B. At this time, if the drawer 12B immediately above the drawer 12C that is being drawn is to be pulled out, the rod member 16B can move forward while engaging with the retracting member 14BT that is in the inclined groove.

However, the drawer 1 to be withdrawn
If the 2C is pulled out to the state shown in FIG.
The CT is completely pushed up to the retracted position, and as a result, the upper regulating member 14BR is pushed up, and the inclined groove of the upper block body 14B is completely closed. Therefore, the rod member 16B of the drawer 12B cannot move forward any more. That is, the rod member 16B is stuck in the inclined groove of the block body 14B, and the support 14 itself is locked at that position. As a result, the block body 14C cannot be further raised, and eventually the drawer 12C cannot be pulled out. That is, simultaneous two drawers are prevented.

When any two drawers are drawn, the lower drawer is considered as the lower drawer in FIG. 4 and the upper drawer to be drawn is considered as the upper drawer in FIG. , The simultaneous withdrawal of any two drawers can be prevented. Of course, more than 3 drawers cannot be drawn at the same time.

In the above embodiment, the structure in which the column is moved upward is used. However, the same applies to a structure in which the inclined groove is a groove that rises forward, the column is moved downward by a pull-out operation, and the column is held by a holding mechanism. Simultaneous withdrawal can be prevented by the connector. That is, the upper side of FIG. 2 may be considered as the lower side. In this case, in order to return each connected body to its original upper position, the connecting body has at least a biasing force that overcomes the gravity of the connected body, and one end of a biasing member such as a coil spring that constantly biases upward is connected to the connected body. What is necessary is just to connect somewhere and to connect the other end to a support | pillar or a block body.

Further, even when the support is moved upward, the retracting member may be configured to be retracted relatively downward with respect to the support, and the regulating member may be connected below the retractable member. Good. Also in this case, an urging member is required. Further, as described above, a structure in which this embodiment is considered upside down may be adopted. The connecting members and the block members do not need to be the same, but if they are the same, they can be molded with one mold and contribute to cost reduction. The same applies to other embodiments described below.

Hereinafter, the holding mechanism will be described. FIG. 7 is a view of the inside of the upper left portion of the cabinet of FIG. 1 as viewed from the front of the cabinet. When a key is inserted into a key mechanism KY (part of a locking mechanism) shown in FIG. 1 and rotated, a key stick KYK extending in the left-right direction of the cabinet.
(Part of the locking mechanism) rotates, but this rotation center axis C
At a position deviated from 0, there is provided a protruding engagement member 22 which rotates together with the key bar and also extends in the left-right direction.

FIG. 6 is a view of FIG. 7 viewed from the right side, and shows an L-shaped engagement hole LH provided at a predetermined position on the front surface of the holding member TB.
, The protruding engagement member 22 is engaged. FIG. 8 is an enlarged view of the L-shaped engagement hole LH, and is an explanatory diagram of a later-described modified example of the engagement hole. The L-shaped engagement hole is continuous with the upper and lower hole portion LH1 extending in the vertical direction and substantially perpendicularly thereto.
Left and right holes LH2 having a length exceeding the length of the rotation radius of the protruding engagement member 22 are provided.

In the state (a), the support 14 is located at the lower normal position, and the protruding engagement member 22 is located at the upper end of the L-shaped engagement hole to support the support 14. This is the position where the drawer can be pulled out. On the other hand, if locking is performed, the state shown in FIG. That is, the protruding engagement member 2
2 comes to an upper position after approximately a half rotation. At this time, by engaging with the left and right holes LH2 of the L-shaped engagement hole LH, the column 14 is pulled up and held together with the holding member TB.

Further, when the support 14 is pushed up from the state shown in FIG. 3A, the projecting engagement member 22 presses the cam surface KS provided on the operation member KB while the upper and lower holes L of the L-shaped engagement hole are being pressed.
Attempts to move relatively downward through H1. Since the operating member KB having the cam surface is urged leftward in FIG. 6 by the coil spring CS, the operating member KB moves relatively downward while overcoming this urging force and pushing the operating member rightward. When the operating member is located below the cam surface, the operating member attempts to return to the original position by the urging force of the coil spring.

The state where the support 14 is at the uppermost position is shown in FIG. This state (c) is a state in which the cam surface of the operating member that has been subjected to the urging action of the coil spring CS and the projection-like engaging member 22
Is held by the engagement. However, when the support is lowered by a force that overcomes the urging force, the operating member KB presses and engages with the protruding engagement member 22 via the cam surface thereof. Return to the state.

The width of the upper and lower holes of the L-shaped engaging hole is substantially the same as the width of the engaging portion of the engaging member 22. Therefore, in the vertical movement of the support, the support can be moved up and down linearly by the guide action of the stopped engaging member. Therefore, another member for guiding the support may not be required. Further, as the engaging hole, a right triangular engaging hole LH 'having two sides LN1 and LN2 orthogonal to the L-shaped outer periphery having a large periphery defining the L-shaped hole as shown in FIG. 8 may be used. . Furthermore, a rectangular engaging hole LH ″ having the sides LN1 and LN2 may be used.
However, in the case of the triangle or the rectangle, a guide for vertically moving the column is required, and the guide uses the guide LN1 of the engagement hole.
Move up and down so that the column contacts the right side of the engaging member 22 in FIG. Various other shapes are also possible.

The locking mechanism is different from that of the embodiment. For example, a pinion is mounted on the tip of a key stick KYK, and a rack that meshes with the pinion is assembled so as to be driven in the vertical direction. In the case where the combination with the member TB is moved in the vertical direction (upward) and locked, the engagement hole may be a hole similar to the upper and lower hole portion LH1 of the L-shaped engagement hole. That is, since the mechanism does not rotate in the engagement hole, locking is possible without the left and right holes LH2.

Of the above-mentioned various engagement hole configurations, a state in which the column has moved to the locking position in the unlocked state, ie, FIG.
In the state where the engaging member 22 is located at the lower end position of the upper and lower holes LH1, the engaging holes LH,
Locking is not possible with LH '. Therefore, in the case of such an engagement hole, when an arbitrary drawer is pulled out, the rod member serving as the guide member on the drawer side engages with the block body with the inclined groove serving as the guide member on the support side to move the support column upward. The engaging member 22 engages with the cam surface and relatively lowers while overcoming the spring bias. The engaging member 22 is located at the lower position (below the engaging hole) of the cam surface and is biased by the spring. However, in this position, sufficient locking rotation cannot be performed, and erroneous locking cannot be performed. Therefore, there is no inconvenience even if the drawn-out drawers are stored. That is, it is possible to prevent the locking mechanism and each guide member from being damaged.

In the above description, the support column and the holding member TB move upward to reach the locking position. However, a mechanism may be used in which the support column and the holding member TB move downward and set the locking position. Further, an engaging hole or an urging mechanism may be provided on the column itself without the holding member.

FIG. 5 illustrates a structure for preventing simultaneous pull-out using a linear member 20 which can be bent in the lateral direction, instead of the above-described embodiment using a connecting body. The linear member 20 is
A so-called string or chain may be used. Each figure (a) (b) (c)
Explains the engagement relationship between the rod member 16C corresponding to the drawer 12C and the inclined groove block body 14C ', and the upper part of each figure is a view of the lower structure viewed from above. The linear member 20 extends vertically between the two flange portions of the column 14 having the configuration shown in FIG.

It can be arranged only between two adjacent drawers or longer than it. In this embodiment, the height corresponding to the uppermost drawer corresponds to the lowermost drawer. The upper and lower ends are held vertically by the cabinet body 10 or held by the support posts 14 with a predetermined slack. If it is inconvenient if there is a slack at normal time, a spring member such as a coil spring is provided at least at one end to urge the linear member to be stretched, and the linear member is always stretched.

In order to loosen the linear member connected to the spring member by a predetermined amount when necessary, a regulating mechanism for restricting the extension of the spring member to a predetermined amount is provided. For example, the lower end of the linear member is fixed to the cabinet main body, and a spring member is connected to the upper end to fix the upper end of the spring member to the cabinet main body. A flange is provided near the connecting portion between the linear member and the spring member, and a restricting portion is provided on the cabinet body so that the flange is not further lowered below the predetermined amount from the normal flange position. And so on. A column may be used in place of the above cabinet body.

The same applies to the other blocks, but a hole 14HC of the column is provided between the engaging feet L1 and L2 of the block 14C 'to be locked to the flanges 14F1 and 14F2 of the column. Through the two flange portions 14F1, 14
The convex part PT is formed so as to project from the space between F2. Inside the convex portion, a hole GM having a substantially rectangular cross section, which communicates with the inclined groove 14CK and is inclined up to the tip of the convex portion, is provided.
Are formed. The inclined hole is inclined in a direction away from the drawing direction (left direction in FIG. 5) toward the tip end of the hole.

In the inclined hole, a retracting member 14CR having a head of approximately the width of the hole is provided. This retreat member is movable along the inclination direction of the hole GM. The convex part P
T and a groove PT penetrating vertically in the head of the evacuation member
S and 14 CRS are provided, respectively, and the linear member 20 described above passes vertically through these grooves. Groove PTS
Communicates with the inclined hole GM inside the projection PT. In a state where the linear member 20 is linearly inserted into each groove, a portion extending from the head of the retracting member projects into the inclined groove 14CK. This is the state of FIG.

When the drawer 12C is slightly pulled out from the state (a), the state changes to the state (b). That is, this is a state in which the rod member 16C protruding to the drawer side has begun to contact the retracting member. The strut 14 moves upward as in the previously described embodiment. next,
When it is pulled out a little more, the state becomes (c). That is, the rod member 1
6C is a state in which the retreat member is retreated most. The head of the evacuation member protrudes from the end of the inclined hole GM, and the evacuation member is prevented from falling by the flange portion 14F1 of the support or the other member 15 arranged to close the U-shaped space of the support. Will be retained. If only this drop holding is performed, the inclined hole GM may be terminated near the end of the convex portion so as not to be opened outside the convex portion PT. It is open to the outside.

(B) As can be seen from (c), the linear member 20 passing through the groove is drawn into the head of the retracting member in accordance with the retracting distance of the retracting member in the convex direction. It engages with the head while bending in a U-shape. Therefore, retraction is possible within the range of the amount of slack of the linear member or the amount of slack that can be achieved by the action of the spring member and the regulating mechanism. The aforementioned predetermined amount of slack is substantially twice or more the retreat distance of the retreat member when one drawer is pulled out when the retreat member is a member parallel to the upper and lower surfaces,
That is, less than four times.

If the drawer 12C is pulled out to the position (c), and if another drawer is to be drawn out, the possible slack length of the linear member 20 is twice the retracted amount. As described above, for example, there is a possibility that the other drawer can be withdrawn up to the state of (b), but cannot be drawn up to the state of (c). This is because the slack is less than four times the retracted amount. Therefore, two drawers cannot be pulled out (almost) at the same time, and the cabinet is prevented from accidentally falling.

Further, since the column 14 is held by the holding mechanism shown in FIG. 6 and the like at the locking position, another drawer cannot be pulled out later as in the related art. Further, if the linear member 20 also has a predetermined rigidity, when the drawer is pulled out from the state (c), a force acts so as to return to a substantially straight line as in the original (a). Therefore, the retracting member also returns to the original position (a). In order to ensure this, it is preferable to adopt the above-described form in which the spring member is connected to the linear member 20.

When the drawer 12C is pulled out and stored, the rod member 16C abuts on the retracting member that has returned to its original position, but is disposed in the above-described inclined hole GM. The retreat member itself is inclined in the direction along the hole GM, and furthermore, 14CU near the boundary between the inclined hole GM and the inclined groove 14CK, and 14CU near the boundary extending from the head of the retreat member. There is a certain amount of space between the opposite side 14CRU and the evacuation member has its corners removed at the rear end of its head so that it can rotate somewhat about the vertical axis in the inclined hole. Has formed. For this reason, the rod member 1
6C, it retracts along the inclined hole while rotating and retracting in the storage direction. Thereby, the drawer can be stored smoothly.

In the above example, the third stage drawer 12C has been described as an example. However, any drawer can be used in the same manner, so that the above description is versatile. Also,
The column can be moved downward by changing the inclination direction of the inclined groove of the block body, and the like.

In the mechanism described with reference to FIG. 5, a convex portion PT having a predetermined shape may be integrally formed with resin on the inclined groove block body, and the retracting member can be easily formed by injection molding. Thereafter, it is only necessary to insert the evacuation member into the block body, and there is no need for a step of attaching the evacuation member to a pivot pin or the like and an axis pin part or the like. The block body inserted and assembled in this manner is mounted on a column (or may be inserted after the block body is mounted on the column 14), and finally, the linear member only needs to be passed through the groove, making it very easy to manufacture and assemble. Therefore, it becomes possible at low cost.

In the above description, the drawer side guide member of the protruding rod member is used on the drawer side, and the column side guide member of the block body having the inclined groove is used on the column side, but these are replaced. Various modifications are possible.

[0052]

As is apparent from the above description, according to the present invention, it is possible to provide a cabinet with a safety locking device which does not use a catch member.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cabinet according to the present invention.

FIG. 2 is an exploded perspective view of a main part of FIG.

FIG. 3 is an operation explanatory view.

FIG. 4 is another operation explanatory view.

FIG. 5 is an operation explanatory view of another form mechanism.

FIG. 6 is an explanatory diagram of the operation of the holding mechanism.

FIG. 7 is a view showing the vicinity of a connection portion between a locking mechanism and a holding mechanism, and is a view of the inside of the cabinet from the front side of the drawer.

FIG. 8 is an enlarged explanatory view of an engagement hole.

[Explanation of symbols]

14 Support 14A, 14B, 14C, 14D Block 14AK, 14BK, 14CK, 14DK Inclined groove 14BT, 14CT, 14DT Retreat member 14AR, 14BR, 14CR Restriction member 14CR Retreat member 16A, 16B, 16C, 16D Rod member 20 Linear member 22 Engaging member CS Coil spring KB Actuating member KS Cam surface LH Engaging hole LH1 Upper and lower holes TB Holding member

Claims (4)

[Claims] 1. A drawer having a plurality of stages, a drawer-side guide member provided in each drawer, a column movable up and down with respect to the cabinet body, and provided on the column corresponding to each drawer-side guide member. When the drawer is pulled out from the normal position, the drawer is engaged with the drawer-side guide member, and the column can be moved to the locking position for maintaining the drawer in the storage position in the storage position. When storing the drawer that is being pulled out, the support side guide member that applies a force to return the support to the original normal position by engagement with the drawer side guide member, and the support moved to the locking position at that position Hold and
A cabinet having a holding mechanism for releasing holding against a predetermined force or more for returning the support to the original position, wherein the holding mechanism has an engagement hole formed in the support or a member held by the support. An engagement member that is provided and operates via a locking mechanism is engaged with the engagement hole, and the engagement hole has a shape that allows the engagement member to move a predetermined amount in the vertical direction. A safety locking device comprising: urging means for applying a resistance to a vertical relative movement of the engagement member in the engagement hole when moving from the stop position to the normal position. With cabinet. 2. An actuating member having a cam surface which comes into contact with the engaging member both when the post is moved upward and downward, and a spring member which can urge the actuating member. The operating member and the spring member are provided in a member held by the support and inserted and disposed in a guide hole communicating with the engagement hole, and the spring member moves the operating member in the guide direction of the guide hole. The cabinet with a safety locking device according to claim 1, wherein the cabinet is urged along. 3. A locking mechanism for rotating the locking member about a position deviated from the center of the key when the key is locked and rotated, and the column moves to the locking position in an unlocked state. 3. The cabinet with a safety locking device according to claim 1, wherein the width of the engagement hole at the position where the engagement member is located is smaller than the rotation radius of the engagement member. 4. The engaging hole has an L-shape having upper and lower holes extending vertically, and the width of the upper and lower holes is substantially the same as the width of the engaging portion of the engaging member. A cabinet with a safety locking device according to any one of 1 to 3.