JP5789324B2 - Safety lock device - Google Patents

Description

  The present invention relates to a safety lock device.

Cabinets and chests with drawers arranged one above the other are drawn out of multiple drawers because there is a risk of falling forward when multiple drawers are pulled out from the front-open housing. A safety lock device was provided to prevent the remaining drawers from being pulled out in the extended state.
For example, in a conventional safety lock device, a contact is projected on the side surface of each drawer body, and a cam plate corresponding to each drawer body is pivotally provided on the inner side surface of the box body, and the uppermost position from the lowermost drawer body. One wire was stretched along the drawer body.
Then, the cam plate swung by the drawn-out drawing body puts the wire in a tensioned state, and with the tension in the tensioned state, the cam plate corresponding to the remaining drawing-out body cannot be swung, and can no longer swing. The cam plate serves as a stopper for the contacts of the remaining drawers to prevent the remaining drawers from being pulled out (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 10-327953

However, the wire may be stretched due to repeated tension and non-tension due to long-term use, temperature change, etc., and the play will become larger, causing detachment and rattling, and may not operate normally. there were.
Further, if the user pulls out the drawer body with an unreasonable force without knowing the safety lock device, the tension of the wire is lost and the remaining drawer body may be pulled out.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a highly safe safety lock device that can reliably prevent the remaining drawers from being pulled out while one drawer is pulled out.

In order to achieve the above object, a drawer safety lock device according to the present invention has a front opening-like housing that houses a plurality of drawer bodies arranged vertically, and the uppermost position from the lowermost drawer body. A lock bar that can be moved up and down along the drawer, a bullet urging member that corresponds to each of the drawers and raises the lock bar, and that corresponds to each of the drawers and the bullet urging member And a connecting member having a transmission part for transmitting the upward urging force to the lock bar, and in the state where one of the plurality of drawers is pulled out, the remaining above In the safety lock device that prevents the drawer body from being pulled out by the lock bar in the raised state, a long hole is provided in the lock bar so as to correspond to each drawer body, and the long hole of the lock bar is provided. Insert the transmission part of the connecting member into Nde, the elastic biasing force upward of the resilient biasing member, the transmission portion is in contact with the upper edge of the elongated hole configured to transmit to the lock bar, to the housing, the A case-type member holding portion is provided which accommodates a bullet urging member and guides the connecting member so as to be movable in the vertical direction .

In addition, a front opening-like housing that houses a plurality of drawers arranged above and below, a lock bar that can be moved up and down along the drawer body at the uppermost position from the drawer body at the lowest position, and each of the drawers A bullet urging member that corresponds to the body and raises the lock bar; and a bullet urging force that corresponds to each of the drawers and that is upward of the bullet urging member is transmitted to the lock bar. A connecting member having a transmission portion of the plurality of drawers, and one of the plurality of drawers is pulled out, and the remaining drawers are pulled out by the lock bar in the raised state. In the safety lock device to prevent, a long hole is provided in the lock bar so as to correspond to each of the drawers, and the transmission portion of the connecting member is inserted into the long hole of the lock bar to The upward urging force of the member It is configured to contact the upper edge portion of the elongated hole and transmit it to the lock bar, and press the connecting member downward in the retracted storage state to each of the drawers so as to be above the bullet urging member. A resilient force disabling wall portion for disabling the impact urging force and a contact wall portion that can come into contact with the lock bar when the lock bar is raised are integrally formed of resin and fixed. It is a thing.
Further, when the lock bar is raised in the one-out state, the lower edge portion of the long hole of the lock bar is not brought into contact with the transmission portion of the connecting member corresponding to the remaining drawer body. Formed .

  According to the present invention, it is possible to prevent the remaining drawers from being pulled out in a state where one of the plurality of drawers is pulled out. As a result, it is possible to reliably prevent the entire cabinet or the like from falling forward. Excellent durability and can be used safely for a long time.

FIG. 2 is a side view of a main part in a free drawing state, showing an embodiment of the present invention. It is a principal part cross-section side view of a drawer free state. It is a principal part sectional front view of a drawer free state. It is a principal part side view of a safety lock state. It is a principal part cross-sectional side view of a safety lock state. It is a principal part cross-sectional front view of a safety lock state. It is a principal part side view of an all-lock state. It is a principal part enlarged side view which shows other embodiment. It is a principal part enlarged side view which shows other embodiment. It is a principal part enlarged side view which shows other embodiment. It is a principal part enlarged side view which shows other embodiment.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
The drawer safety lock device according to the present invention is a cabinet in which three drawer bodies 2, 2, and 2 are vertically arranged in a case 1 having a front opening in the embodiment shown in FIGS. As shown in FIG. 4, the remaining drawer bodies 2 (2Y) and 2 (2Y) are pulled out in a state where one of the three drawer bodies 2, 2, and 2 is pulled out. It is an apparatus for preventing the above.

In FIG. 1, a side view band plate-like lock disposed vertically from the lowermost drawer body 2 to the uppermost drawer body 2 on one side of the left and right inner side surfaces of the housing 1. One bar 30 is provided.
The lock bar 30 has stoppers 37, 37, 37 that correspond to the drawers 2, 2, 2 and project horizontally. Further, the upper end 30a of the lock bar 30 is held by a suspension member 81 and is vertically suspended (movable up and down). The lock bar 30 (stopper portion 37) includes a reference state at a predetermined position (lower position) as shown in FIG. 1, and an elevated state (upper position) moved upward from the predetermined position as shown in FIGS. , Switch to.

  2 and 3, the elastic urging member comprising a coil spring for raising the lock bar 30 corresponding to each of the drawers 2, 2, 2 on the inner side of one of the left and right sides of the housing 1. 50, 50, 50 and connecting members 60, 60, which are connected to the lock bar 30 and are elastically urged upward by the elastic urging member 50 and transmit the elastic urging force to the lock bar 30. 60 and a case-type (box-shaped) member holding portion 11 that holds the bullet urging member 50 and holds the distal end side of the connecting member 60 so as to be movable in the vertical direction.

  The member holding portion 11 protrudes from the left and right inner side surfaces of the housing 1 to the drawer 2 side, and has an upper wall portion having an upper opening 11e from which the upper wall 61 on the distal end side of the connecting member 60 can protrude upward. 11a, a lower wall portion 11b having a positioning convex portion 11f to be inserted into the lower end side of the elastic urging member 50 (coil spring), and a connecting member 60 are attached in an outer fitting shape, and the connecting member 60 is moved in the vertical direction. And a rail portion for guiding freely and maintaining the posture of the connecting member 60. Note that the member holding portion 11 is easily manufactured by forming the upper wall portion 11a, the lower wall portion 11b, and the rail portion integrally with a resin in a case shape and fixing them to the inner surface of the housing 1.

  The connecting member 60 has an upper wall 61 in the shape of a circular arc in a side view (maruyama shape) that receives upward elastic force by the elastic biasing member 50 on the tip side. A transmission portion 69 that is inserted into a long hole 36 penetrating the lock bar 30 on the base end side, abuts on the upper edge portion 36a of the long hole 36, and transmits an upward elastic urging force to the lock bar 30. Have.

  Further, the connecting member 60 protrudes forward and backward outward from the front and rear walls 62, 62 on the distal end side, and abuts against the upper wall portion (locking wall portion) 11a of the member holding portion 11 in the raised state by the elastic biasing force. Further, it has retaining protrusions 62a, 62a that prevent the upper opening 11e from coming off. The upper wall 61 has a positioning projection 61f that protrudes downward and is inserted into the upper end side of the bullet urging member 50 (coil spring). In addition, it has a pair of front and rear claw portions that are held in the rail portion of the member holding portion 11 in a hug shape.

Next, the drawer body 2 is housed in the drawer 1 in which the drawer body 2 is housed in the housing 1 on the left and right outer surfaces of each drawer body 2 facing the left and right inner surfaces of the housing 1. A resilient force disabling wall portion 26 that presses the wall 61 downward and invalidates the upward impact urging force of the impact urging member 50 protrudes horizontally in a front view.
Note that “in the retracted and retracted state, invalidate the upward biasing force of the elastic biasing member 50” means that the elastic and biasing member 50 is locked via the connecting member 60 in the retracted and retracted state. This is to prevent the bullet urging force (burst force) that is going to raise 30 from being transmitted to the lock bar 30.

The elastic force invalidating wall portion 26 has a horizontal pressing surface 26a that comes into contact with the upper wall 61 of the connecting member 60 in the retracted and retracted state, and has a guide surface 26b that is inclined rearward and downward as viewed from the side. Have.
The guide surface 26b is used for smoothly moving the connecting member 60 downward by slidingly contacting the upper wall 61 of the connecting member 60 when the drawer body 2 is retracted after being pulled out (when moving backward). It is an induced gradient surface.

In addition, a contact wall portion 27 that can come into contact with the stopper portion 37 when the lock bar 30 is raised is provided on the left and right outer surfaces of each drawer 2 so as to protrude horizontally. The contact wall portion 27 is disposed at a position rearward of the stopper portion 37 in the drawer storage state.
More specifically, “the contact wall portion 27 that can come into contact with the stopper portion 37 when the lock bar 30 is raised” means that when the lock bar 30 is raised, the drawer 2 is about to be pulled out. The contact wall portion 27 is provided at a position where it comes into contact with the stopper portion 37 in the raised state (when moving forward).
In other words, each of the stopper portions 37, 37, 37 can come into contact with the contact wall portion 27 of the drawer 2 in the stored state when the lock bar 30 is raised, that is, in front of the contact wall portion 27. And at substantially the same position in the vertical direction (the vertical position where the stopper portion 37 and the contact wall portion 27 partially or entirely overlap in a front view). Furthermore, in other words, the stopper portion 37 is provided on the track (trajectory) through which the abutting wall portion 27 will pass when it is pulled out.

The contact wall portion 27 has a vertical contact wall surface 27a in a side view that comes into contact with the rear surface of the vertical surface of the stopper portion 37 when the drawer body 2 is to be pulled out while the lock bar 30 is raised in the front portion. In addition, the rear portion has a guide surface 27b that is inclined rearward in a side view.
When the guide body 27b is housed after the drawer body 2 is pulled out, it slides on the front surface of the stopper portion 37, moves the stopper portion 37 (lock bar 30) downward, and smoothly moves the drawer body 2 backward. It is a guidance gradient surface for moving.
In addition, the elasticity invalidating wall portion 26 and the contact wall portion 27 are integrally formed of resin and fixed to the outer surface of the drawer 2 to facilitate manufacture.

In FIG. 4 to FIG. 6, in the one-out state, the invalidity of the elastic urging force by the elastic force invalidating wall portion 26 of the drawn-out drawing body 2 </ b> A is released and corresponds to the drawn-out body 2 </ b> A. When the lock bar 30 is lifted (via the connecting member 60) by the elastic force of the elastic urging member 50, the connecting members 60, 60 corresponding to the remaining drawers 2Y, 2Y are lifted upward. The non-interlocking means 9 which prevents this is provided.
In other words, in the one-out state, the connecting members 60, 60 corresponding to the remaining drawers 2Y, 2Y are pushed up by the elastic force of the elastic biasing member 50 corresponding to the extracted drawer 2A. Non-interlocking means 9 for preventing the bar 30 from receiving a pushing force is provided.

In FIG. 6, the non-interlocking means 9 has escape slots 36, 36 provided in the lock bar 30 so as to correspond to the drawers 2, 2, 2 (each connecting member 60, 60, 60). , 36, and transmission parts 69, 69, 69 of connecting members 60, 60, 60 inserted into the long holes 36, 36, 36, respectively.
Further, the upper edge portion 36a of the long hole 36 is formed so as to receive a pressing force in the upward direction from the transmission portion 69 corresponding to the drawn-out body 2A that is pulled out.
Further, the lower edge portion 36b of the long hole 36 is formed so as not to come into contact with the transmission portions 69, 69 corresponding to the remaining drawers 2Y, 2Y even when the lock bar 30 is lifted up. ing. That is, the connecting members 60, 60 corresponding to the remaining drawers 2Y, 2Y are provided so as not to receive the upward pressing force (pushing force) from the lock bar 30.
Further, as shown in FIG. 3, the upper edge portion 36a of the long hole 36 has a transmission portion in a free drawing state in which all of the plurality of drawers 2, 2, and 2 are in the drawn out and stored state and the lock bar 30 is in the reference state. It is formed so as to contact or approach 69.
In other words, the non-interlocking means 9 is a means that can transmit a push-up force from the connection member 60 to the lock bar 30 and cannot transmit a push-up force from the lock bar 30 to the connection member 60.

  Further, from the free drawing state shown in FIG. 1, each of the drawer bodies 2, 2, 2 shown in FIG. All-locking means 8 for preventing the drawer from being brought into an all-locked state is provided.

  1 and 7, the all-lock means 8 supports the upper end portion 30a of the lock bar 30 and is supported by the housing 1 and a horizontal shape provided in the housing 1 in the front-rear direction. The lock member 80 can be operated by engaging the lock member 80 such as a cylinder lock which can be fixed at the swing position by swinging the suspension member 81 around the axis L1 and the lock hole of the lock member 80. And an unillustrated key.

When the lock member 80 is locked with a key in the free drawing state shown in FIG. 1, the suspension member 81 swings, the lock bar 30 is lifted to the lifted state, and the lock member 80 further lifts the lock member 81. Is fixed at the swing position so that the lock bar 30 is held in the raised state.
As shown in FIG. 7, all the drawer bodies 2, 2, 2 are in the retracted storage state, the lock bar 30 is in the raised state, and the stopper portions 37, 37, 37 of the lock bar 30 are in the raised state, It becomes possible to come into contact with the contact wall portion 27 of each drawer body 2, and all drawer bodies 2, 2, and 2 are prevented from being pulled out and become all-locked.

  Further, in the all-locked state shown in FIG. 7, when the unlocking member 80 is unlocked with a key, the suspension member 81 swings and the lock bar 30 is lowered to the reference state (the lock bar 30 is lowered). 1), the stoppers 37, 37, 37 of the lock bar 30 are lowered, and the drawing-out free state shown in FIG. 1 is restored.

Next, the usage method (action) of the drawer safety lock device of the present invention will be described.
As shown in FIG. 1, when all the drawers 2, 2, 2 are in the retracted and retracted state and the lock member 80 is in the unlocked free state, as shown in FIG. 2 and FIG. The biasing member 50 elastically biases each connecting member 60 upward. However, each elastic force invalidating wall portion 26 prevents each connecting member 60 from moving upward, and no elastic force is transmitted to the lock bar 30, so that the lock bar 30 is in the reference state. The stopper portions 37, 37, 37 of the lock bar 30 are located below the contact wall portions 27, 27, 27 of the drawer bodies 2, 2, 2. Accordingly, any of the plurality of drawers 2, 2, and 2 can be pulled out.

  For example, as shown in FIG. 4, when the drawer body 2 at the upper and lower intermediate positions is pulled out, the resilience nullifying wall portion 26 corresponding to the drawn-out drawer body 2 </ b> A is more than the connecting member 60 as shown in FIG. 5. It moves forward, the invalidity of the bullet urging force is released, and as shown in FIGS. 5 and 6, the upper wall 61 of the connecting member 60 rises and the transmission portion 69 rises. The transmission part 69 corresponding to the drawn-out drawing body 2A presses the upper edge part 36a of the long hole 36, and the lock bar 30 is raised.

  Further, when the lock bar 30 is raised by the connecting member 60 corresponding to the drawn-out body 2A, the force for raising the lock bar 30 by the connecting member 60 is the non-interlocking means 9 (the escape action of the long hole 36). Thus, it is not transmitted to the connecting members 60 corresponding to the remaining drawers 2Y and 2Y, and deformation and damage of the connecting members 60 and the resilience nullifying wall portion 26 corresponding to the remaining drawers 2Y and 2Y are prevented. .

  Further, as the lock bar 30 is raised, the stoppers 37, 37, 37 are raised, and the remaining drawers are positioned in front of the contact walls 27, 27 of the remaining drawers 2Y, 2Y and at substantially the same position in the vertical direction. The stopper portions 37 and 37 corresponding to 2Y and 2Y are disposed, and can come into contact with each other so as to prevent the remaining drawers 2Y and 2Y from being pulled out, and a safety lock state is established.

  In this safety lock state, even if it tries to pull out the remaining drawer 2Y, the vertical surface rear surface of the stopper portion 37 and the contact wall surface 27a of the contact wall portion 27 come into surface contact with each other with a strong force (blocking force). The withdrawal is blocked.

  When the drawn-out drawer 2A is moved rearward and stored (returned) in the housing 1, the guide surface 27b of the contact wall 27 of the drawn-out drawer 2A slides on the stopper 37 in the raised state. The stopper portion 37 is pushed downward to bring the lock bar 30 to the lower position, and the guide surface 26b of the elastic force invalidating wall portion 26 is slidably contacted with the arc-shaped upper wall 61 of the connecting member 60 and connected. The member 60 is pushed down, the impact urging force is invalidated by the pressing surface 26a, the transmission part 69 of the connecting member 60 is lowered, and the lock bar 30 is lowered. The drawer 2 can be returned smoothly and smoothly with a small force.

  In addition, when it is desired to prevent all drawers 2, 2, and 2 from being pulled out during relocation or transportation, or for management or crime prevention purposes, the lock member 80 is locked with a key, as shown in FIG. As described above, the lock bar 30 is in the raised state, and the stopper portion 37 is disposed at a position in front of the contact wall portion 27 of each of the drawer bodies 2, 2, 2 and substantially at the same position in the vertical direction, so that the all-lock state is achieved. . In this all-locked state, the non-interlocking means 9 prevents the lock bar 30 in the raised state from pushing up the connecting member 60, thereby preventing the connecting member 60 and the elastic force invalidating wall portion 26 from being deformed or damaged.

Next, FIGS. 8 to 11 show other embodiments. Other embodiments are the same as those shown in FIG. 1 except for the configuration of the all-lock means 8 shown in FIGS. 1, 4 and 7 (the suspension member 81 and the lock member 80 provided on the housing 1). It is the structure demonstrated using thru | or FIG.
In other embodiments shown in FIGS. 8 and 9, the all-lock means 8 is raised and unlocked by a locking member 80 such as a cylinder lock provided on the uppermost drawer 2 and a locking operation of the locking member 80. One end (front end) portion 88a is pushed against the interlocking bar 89 that is lowered by the locking operation (moves up and down by the locking / unlocking operation) and the tip 89a of the interlocking bar 89 that is provided on the top plate portion 1a side of the housing 1. The swing member 88 that rises and swings the seesaw around the horizontal pivot axis S1 in the lateral direction (left and right direction) and lowers the other end (rear end) 88b, and the other end of the swing member 88 An operation force receiving member 87 that abuts on the 88b and receives a force by the projecting piece 87a and swings around the horizontal horizontal swing axis S2, and an operation force receiving member 87 is attached in an outer fitting manner. A rectangular bar-shaped transmission shaft 86 that rotates about the oscillation axis S2 in accordance with the oscillation of the force receiving member 87, and is connected to the transmission shaft 86. The pivot 86 is pivoted about the pivot axis S2 by the rotation of the reach shaft 86 and is connected to the upper end 30a of the lock bar 30 to move the lock bar 30 up and down, and to the key hole of the lock member 80. And a key (not shown) capable of operating the lock member 80.

The lock member 80 and the interlocking bar 89 are housed in the internal space of the front wall portion of the drawer 2 at the uppermost position.
The swing member 88, the operating force receiving member 87, the transmission shaft 86, and the swing connecting member 85 are disposed in the vicinity of the top plate portion 1a of the housing 1. Further, the swing member 88 and the operation force receiving member 87 are provided in the middle portion in the left-right direction of the housing 1. The swing connecting member 85 is provided on one side of the left and right inner surfaces where the lock bar 30 is provided. The transmission shaft 86 is provided from one side of the left and right inner surfaces to the other side, or from the operating force receiving member 87 to one side of the left and right inner surfaces where the lock bar 30 is provided.
In addition, when the lock member 80 is in the unlocked state (unlocking operation), the leading end 89a of the interlocking bar 89 is a drawer that is disposed facing the top plate portion 1a of the housing 1 in the retracted state of the drawer body 2. It is arrange | positioned rather than the rear surface upper edge 2a of the front wall part of the body 2 in the downward position.

Then, when all the drawers 2 are housed in the housing 1, the locking member 80 is operated to lock, as shown in FIG. 9, the interlocking bar 89 rises, and the force that raises the interlocking bar 89 is increased. Then, it is transmitted to the oscillating connecting member 85 via the oscillating member 88, the operation force receiving member 87, and the transmission shaft 86, and the lock bar 30 is lifted to be in the raised state, and the all-lock state is obtained.
Further, when the unlocking member 80 is unlocked in the all-locked state, as shown in FIG. 8, the interlocking bar 89 is lowered, the lock bar 30 is lowered to the reference state (lower position), and the drawer is in the free-drawing state. Return.

Further, in FIG. 10, a lock member erroneous operation preventing means (interlocking bar breakage preventing means) 7 for preventing an erroneous operation such as unlocking operation of the lock member 80 in a state where the uppermost drawer 2 is pulled out is provided. Yes.
The lock member erroneous operation preventing means 7 is provided so as to be slidable in the front-rear direction from the upper surface of the front wall portion of the uppermost drawer body 2 to the upwardly protruding convex portion 29, and is interlocked with the uppermost drawer body 2 being pulled out. Provided on the slide member 71 for preventing the interlocking bar protrusion, which is arranged in a lid shape with respect to the tip 89a of the bar 89, and the convex portion 29 of the drawer 2 at the uppermost position. And a bullet urging member 72 for sliding (rearward) to be pressed.

  8 to 10, the uppermost drawer body 2 protrudes upward from the upper edge 2 a of the rear surface of the front wall portion (in the drawer retracted state) and faces the upper front wall portion 1 b of the housing 1. A hollow convex portion 29 is provided. The slide member 71 and the slide bullet urging member 72 are held in the internal space of the convex portion 29.

8 and 9, the slide member 71 is pushed forward by the upper front wall 1 b of the housing 1 in a state where the uppermost drawer 2 is housed in the housing 1, and the convex 29 Most of the inside (length in the front-rear direction 70 to 100%) is pushed into the standby state.
Then, as shown in FIG. 10, when the uppermost drawer 2 is pulled out, the slide member 71 slides backward by the sliding bullet urging member 72, and the rear part of the slide member 71 is the tip of the interlocking bar 89. It is disposed in a lid shape at a position above 89a.

  That is, when an attempt is made to unlock the lock member 80 with the drawer 2 at the uppermost position being pulled out, the tip 89a of the interlocking bar 89 abuts against the rear portion of the slide member 71, and the lock member 80 is prevented from rising. Block the unlocking operation. Accordingly, the unlocking member 80 is unlocked in a state where the uppermost drawer body 2 is pulled out, and the front end 89a of the interlocking bar 89 protrudes rearward from the upper edge 2a of the rear face of the drawer body 2 (housing 1 side). To prevent the upper front wall 1b of the housing 1 and the tip 89a of the interlocking bar 89 from coming into contact with each other and being damaged.

  That is, the lock member erroneous operation preventing means 7 holds the slide member 71, the slide bullet urging member 72, the slide member 71 slidably, and also holds the slide bullet urge member 72. It consists of a convex portion 29 of the drawer 2 that is disposed facing the upper front wall portion 1 b and an upper front wall portion 1 b of the housing 1.

  Further, in FIGS. 10 and 11, the drawers 2Y and 2Y (not shown in FIGS. 10 and 11) are prevented from being pulled out with the drawer 2 at the uppermost position being pulled out. A safety lock releasing means 6 is provided that enables the remaining drawers 2Y and 2Y to be pulled out by lowering the lock bar 30 in the safety lock state.

The safety lock releasing means 6 includes a swing connecting member 85 that rotates the transmission shaft 86 when the lock bar 30 is raised, and an outer fitting shape attached to the transmission shaft 86 and around the swing axis S2 by the rotation of the transmission shaft 86. An operation force receiving member 87 having a swinging operation lever protruding piece 87b and a finger (hand or hand) on the operation lever protruding piece 87b of the operation force receiving member 87 in a single-out state where the uppermost drawer 2 is pulled out. And an operation space K that can be operated by a tool.
The operating force receiving member 87 is provided such that when the transmission shaft 86 rotates as the lock bar 30 is raised, the operating lever protruding piece 87b is raised by swinging around the swing axis S2. In other words, the operating force receiving member 87 includes a cylindrical portion that is externally fitted to the transmission shaft 86, a receiving protruding piece portion 87a that protrudes forward from the cylindrical portion, an operating lever protruding piece portion 87b that protrudes rearward from the cylindrical portion, And the seesaw operates around the swing axis S2. A member in which a member that transmits the force from the lock member 80 (swinging member 88) to the transmission shaft 86 and a member that transmits the operation force directly obtained from a human hand to the transmission shaft 86 are used (shared). It is.

As shown in FIG. 10, when the uppermost drawer 2 is pulled out (as described in the embodiment shown in FIGS. 1 to 7), the lock bar 30 is in the raised position, and the remaining drawers 2Y, 2Y Is a safety lock state in which the drawer is prevented.
However, if it is desired to pull out all the drawers 2 for repair or maintenance, after the drawer 2 at the uppermost position is drawn out, as shown in FIG. The part 87b is pushed downward with a finger of a hand (or a tool such as a jig). Then, the operating force receiving member 87 swings to rotate the transmission shaft 86, and the rotation of the transmission shaft 86 causes the swing coupling member 85 to swing, causing the lock bar 30 to be urged by the elastic biasing member 50 (FIGS. 5 and 6). Forcibly descend against the resilience of (see).

  The lock bar 30 can be lowered while the uppermost drawer 2 is pulled out, and the withdrawal of the remaining drawers 2Y and 2Y was prevented by the lowering of the lock bar 30. The stopper portion 37 (see FIG. 2) is also lowered to enter the safety lock release (safety lock invalid) state.

  Further, a horizontal partition wall 1d is provided below the operation force receiving member 87. In the safety lock state in which the uppermost drawer 2 is in the retracted state and the other drawer 2 is withdrawn, when the stored item in the uppermost drawer 2 jumps due to an earthquake or the like, the jumped item is received. The partition wall 1d prevents the safety lock from being released by contacting the piece 87a.

In the present invention, the design can be changed, and the number of the drawer bodies 2 may be two or four or more.
The present invention is not limited to the cabinet illustrated in the drawings, but can be applied to a desk, a storage shelf, or the like in which a plurality of drawer bodies 2 are arranged above and below. Further, the non-interlocking means 9 is not required to transmit a push-up force from the lock bar 30 to the connecting member 60.

  As described above, in the drawer safety lock device of the present invention, one of the plurality of drawer bodies 2, 2, 2 arranged vertically on the front opening-shaped casing 1 is pulled out. In the safety lock device for preventing the remaining drawers 2Y and 2Y from being pulled out, the casing 1 can be moved up and down along the drawer 2 at the uppermost position from the drawer 2 at the lowest position. Provided with a lock bar 30 having stopper portions 37, 37, 37 corresponding to the respective drawers 2, 2, 2, and further, the housing 1 is made to correspond to the respective drawers 2, 2, 2, A bullet energizing member 50, 50, 50 for raising the lock bar 30 and a connection for transmitting to the lock bar 30 an elastic energizing force which is connected to the lock bar 30 and which is connected to the lock bar 30. Members 60, 60, 60 are provided, and each of the drawer bodies 2, 2, 2 is pressed downward with the connecting member 60 in the drawer retracted state. A resilient force disabling wall portion 26 that invalidates the upward impact biasing force of the resilient biasing member 50, and a contact wall portion 27 that can come into contact with the stopper portion 37 when the lock bar 30 is raised, In the state where one is pulled out, the invalidity of the elastic urging force by the elastic force invalidating wall portion 26 of the drawn-out drawer 2A is released, the lock bar 30 is raised, the stopper portion 37 of the lock bar 30, 37 is configured to be able to come into contact with the contact wall portions 27 and 27 of the remaining drawers 2Y and 2Y, so that the withdrawal of the remaining drawers 2Y and 2Y is prevented. , 2 can be reliably prevented from being pulled out in a state where one of the two is pulled out, and an accident such as a forward tilt can be reliably prevented. The remaining drawers 2Y and 2Y can be prevented from being pulled out with a strong force. Excellent durability and can be used safely for a long time. It is not necessary to provide a special and complicated member such as a gear member or a cam member on the outer side surface of the drawer 2 or the inner side surface of the housing 1 and can be easily manufactured.

  In addition, the non-interlocking means 9 for preventing the connecting members 60, 60 corresponding to the remaining drawers 2Y, 2Y from being lifted upward by the lock bar 30 in the one-out state is provided. Deformation and damage of the resilience invalidating wall portion 26 are prevented, and the durability is excellent and it can be used for a long time. Reliable operation with few failures can be realized.

  In addition, since the lock bar 30 is held in the raised state and the all-lock means 8 is provided to prevent all the drawers 2, 2 and 2 from being pulled out, malfunctions such as the drawer 2 popping out can be prevented. Can be transported safely. The thing excellent in crime prevention property and manageability can be obtained. The lock bar 30 for entering the safety lock state can be used to achieve the all-lock state, and the structure can be simplified and manufactured easily.

  Since the safety lock state in which the remaining drawers 2Y and 2Y are prevented from being pulled out, the lock bar 30 is lowered and the safety lock release means 6 that enables the remaining drawers 2Y and 2Y to be pulled out is provided. The drawer 2 can be fully pulled out from the housing 1, and maintenance operations such as maintenance, inspection, repair, and cleaning can be performed easily and smoothly.

DESCRIPTION OF SYMBOLS 1 Case 2 Drawer 2A Drawer 2Y The remaining drawer 6 Safety lock release means 8 All lock means 9 Non-interlocking means
26 Elasticity invalidation wall
27 per wall
30 Lock bar
36 Slotted hole
37 Stopper
50 bullet energizing members
60 Connecting members

Claims (3)

The drawer body at the uppermost position is extended from the lowermost drawer body (2) to the front opening-shaped casing (1) that houses a plurality of drawer bodies (2), (2), and (2) arranged vertically. (2) A lock bar (30) that can be moved up and down along with the elastic biasing member (corresponding to each of the drawers (2), (2), and (2)) and for raising the lock bar (30) ( 50), (50), (50), and corresponding to each of the drawer bodies (2), (2), (2), and the above-mentioned elastic urging force of the elastic urging member (50) is applied to the lock bar (30 And a connecting member (60) (60) (60) having a transmission part (69) for transmitting to the first member, and one of the plurality of the drawer bodies (2) (2) (2) is pulled out. In the safety lock device that prevents the remaining drawer body (2Y) (2Y) from being pulled out in the single-out state by the lock bar (30) in the raised state.
Long holes (36) (36) (36) are provided in the lock bar (30) so as to correspond to the drawer bodies (2), (2) and (2),
By inserting the transmission part (69) of the connecting member (60) into the elongated hole (36) of the lock bar (30), the elastic urging force upward of the elastic urging member (50) The transmission portion (69) is configured to contact the upper edge (36a) of the elongated hole (36) and transmit to the lock bar (30) ,
The case (1) is provided with a case-type member holding portion (11) for accommodating the elastic urging member (50) and guiding the connecting member (60) so as to be movable in the vertical direction. Safety lock device. The drawer body at the uppermost position is extended from the lowermost drawer body (2) to the front opening-shaped casing (1) that houses a plurality of drawer bodies (2), (2), and (2) arranged vertically. (2) A lock bar (30) that can be moved up and down along with the elastic biasing member (corresponding to each of the drawers (2), (2), and (2)) and for raising the lock bar (30) ( 50), (50), (50), and corresponding to each of the drawer bodies (2), (2), (2), and the above-mentioned elastic urging force of the elastic urging member (50) is applied to the lock bar (30 And a connecting member (60) (60) (60) having a transmission part (69) for transmitting to the first member, and one of the plurality of the drawer bodies (2) (2) (2) is pulled out. In the safety lock device that prevents the remaining drawer body (2Y) (2Y) from being pulled out in the single-out state by the lock bar (30) in the raised state.
Long holes (36) (36) (36) are provided in the lock bar (30) so as to correspond to the drawer bodies (2), (2) and (2),
By inserting the transmission part (69) of the connecting member (60) into the elongated hole (36) of the lock bar (30), the elastic urging force upward of the elastic urging member (50) The transmission portion (69) is configured to contact the upper edge (36a) of the elongated hole (36) and transmit to the lock bar (30),
In each of the drawer bodies (2), (2) and (2), the connecting member (60) is pressed downward in the drawer retracted state, and the elastic biasing force upward of the bullet biasing member (50) is invalidated. The resilient force invalidating wall portion (26) and the contact wall portion (27) that can come into contact with the lock bar (30) when the lock bar (30) is raised are integrated with resin. A safety lock device formed and fixed . When the lock bar (30) is raised in the one-out state, the lower edges (36b) of the long holes (36) (36) (36) of the lock bar (30) The safety lock device according to claim 1 or 2, wherein the safety lock device is formed so as not to contact the transmission portions (69) and (69) of the connecting members (60) and (60) corresponding to (2Y) and (2Y) .

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