JP4518824B2 - Latch operating device for drawer - Google Patents

Description

  The present invention relates to a drawer latch operation device in a cabinet or the like.

  Some cabinets with drawers are provided with a latch device that locks the drawer in the cabinet body so that the drawer does not inadvertently move forward due to vibration such as an earthquake.

In general, the latch device is provided with a handle (pull handle) on the front surface of the drawer so that the handle can be operated forward, and a latch (locking claw) or the like interlocked with the operation of the handle is provided on the back side of the drawer. In many cases, the inner surface of the cabinet body is provided with an engaging portion that allows the latch to be engaged and disengaged (see, for example, Patent Documents 1 and 2).
JP 2000-37247 A JP 2000-45607 A

  In the conventional latch device described in the above-mentioned Patent Document 1, the handle is pulled forward, the engagement state between the latch and the engagement portion is once released, and then the drawer can be pulled forward. Two operations were required, and there were some difficulties in operability.

  In the latch device described in Patent Document 2, when the pulling handle is pulled forward, the locking claw is detached from the engaging portion, and at the same time, the pulling out can be pulled out.

However, since the latching claw is provided directly at the rear end of the handle, when the puller is pulled forward, the force is also applied directly to the latching claw so that the latching claw is strongly engaged with the engaging portion. Therefore, the locking claw becomes difficult to come off. Therefore, it is necessary to pull the handle strongly forward, and the drawer cannot be pulled out easily.
In addition, since a large load is applied to the locking claw and the engaging portion, they may be worn out early and the durability may be reduced.

  The present invention has been made in view of the above-mentioned problems, and the latch release and the drawer pull-out are performed continuously and lightly by one operation to improve operability and the drawer is released after the latch is released. It is an object of the present invention to provide a drawer latch operation device that can prevent an excessive force from being applied to the latch and the locking portion by enabling the drawer.

According to the present invention, the above problem is solved as follows.
(1) A handle is inserted into an insertion hole formed in the front plate of the drawer so that the handle can be operated forward, and a rear end of the handle is pivotally attached to the back side of the front plate so as to be pivotable back and forth. while connected to the upper end of the rotary members, the front surface of the operation piece projecting from the upper end of the rotating member, facing the lateral direction definitive to the operation member for the latch operation to disable the pull-out from the casing of the extraction operation The rotating member and the operating member are linked to each other by abutting against the rear surface of the downwardly rotating plate provided on the bag, and the latch and the casing are provided by operating the handle forward. The engagement with the latched portion is released, and the drawer can be pulled out.

(2) In the above-mentioned item (1), the handle has a U-shape that is rearward in plan view, the rear end of the support that faces left and right of the handle, and the pivot member that is pivotally attached to the pivot that has the lower end facing the left and right. Connect to both ends.

(3) In the above item (1) or (2), an upward piece protrudes from the upper end of the rotating member, and the rear end of the handle is connected to the upward piece. By pivoting, the connecting portion of the handle and the pivoting portion are separated from each other in the vertical direction.

( 4 ) In any one of the above items (1) to ( 3 ), a support substrate facing up and down is provided between the back surface of the front plate and the rotating member, and a lower end portion and an upper end portion on the rear surface of the support substrate. Each of the concave receiving portions projecting from each other supports the pivot of the rotating member and the operating rod facing the left-right direction of the operating member so as to be rotatable.

According to the first aspect of the present invention, when the handle is operated forward, the rotating member rotates forward about the pivoting portion, and the latch is operated by the operation member linked thereto, Since the engagement is released, the latch can be released and the drawer can be pulled out continuously by only one operation of pulling the handle forward, and the operability is improved.
Further, since the drawer can be pulled out after the latch is released first, even if the handle is pulled, the force does not directly act on the latch, and the latch does not strongly engage the locking portion. Accordingly, the drawer can be pulled out with a light force, and the latch and the locking portion are not worn.
Furthermore, since the rotating member and the operation member can be easily linked without using any special linkage means, the number of assembling steps can be greatly reduced.

  According to the second aspect of the present invention, since the left and right ends of the handle are connected to both ends of the rotating member, any position of the handle can be stably pulled forward. Therefore, even with a long drawer in the left-right direction, it is possible to attach a handle with a large left-right dimension and to operate it with a reduced moving distance

According to the third aspect of the present invention, when the handle is pulled, a rotational motion close to a straight line is obtained, so that an operational feeling without a sense of incongruity is obtained.
Further, since the rotational moment of the rotating member is reduced, the handle can be easily operated with a small force.

According to the fourth aspect of the present invention, since the pivot and the operating rod of the rotating member are supported only by being fitted to the receiving portion from above, it is very easy to assemble and remove them.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a cabinet to which the present invention is applied. In a case (1) having an open front, a pair of upper and lower drawers (2) are provided in pairs on left and right inner surfaces of the case (1). It is guided by a guide rail (not shown) and accommodated so as to be able to be pulled out forward.

  In the middle of the front plate (3) of each drawer (2) slightly upward, the left and right supports (4a) and (4a) of the rear-facing U-shaped handle (4) having a square cross section are It is inserted so that it can move.

  (5) is a latch operating device. As shown in FIGS. 2 to 5, the handle (4), a vertical plate-like support substrate (6) made of synthetic resin, and a front view of the same made of synthetic resin. A rotating member (7) of the mold, a round bar-shaped operating rod (8) having an operating portion (8a) (8a) bent downward in a crank shape at both left and right ends, and a latch (9 ) And a pair of left and right crank-shaped latch operating shafts (10), (10), and the support substrate (6), the rotating member (7), the operating rod (8), and the latch shaft (10 ) Is accommodated between the front plate (3) and the back plate (11) of the drawer (2).

  A pair of receiving portions (12) and (12) are integrally formed at the lower ends of the left and right side portions on the rear surface of the support substrate (6), and a U-shaped holding groove (13) is formed on the upper surface thereof. Has been.

  The rear surfaces of both receiving portions (12) are fixed to the front surface of the back plate (11) with screws (14).

A pair of support pieces (15) and (15) are projected upward on the upper surfaces of the left and right end portions of the support substrate (6), and a U-shaped holding groove is formed on the upper surface of the rear surface of the upper end portion on the upper surface. Receiving portions (17) and (17) having (16) are connected.
Both holding portions (16) of the operating rod (8) are rotatably fitted and supported in the holding grooves (16).

  The opening size of the upper end of the holding groove (16) is slightly smaller than the diameter of the operating rod (8), and the operating rod (8) is pushed firmly into the holding groove (16) to be fitted. Thus, it can be prevented from easily coming off upward.

  Below the receiving part (17) of the left and right support pieces (15), rectangular holes (18) and (18) through which both supports (4a) of the handle (4) can be inserted with a sufficient margin are formed. Yes.

  At the lower end of the left and right foot pieces (7a) and (7a) of the rotating member (7), a pivot portion (20) having a shaft hole (19) facing in the left-right direction is projected forward, and the foot pieces (7a ) Is formed with a horizontal slit (21) communicating with the rear end of the shaft hole (19).

  The dimension between the opposing surfaces of both foot pieces (7a) is substantially the same as the dimension between the outer surfaces of the receiving parts (12) in the support substrate (6), and the outer side so as to straddle the left and right receiving parts (12) from above. It is fitted.

  The support shaft (22) is inserted into the shaft hole (19) of both foot pieces (7a), and the screw (23) screwed from below the foot pieces (7a) is tightened so as to close the slit (21). Therefore, the stopper and the rotation prevention are made.

  By fitting both end portions of the support shaft (22) located between the both side pieces (7a) to the holding grooves (13) of the left and right receiving portions (12) of the support substrate (6) in a rotatable manner, The rotating member (7) can be rotated back and forth around the support shaft (22).

  Upward pieces (24) and (24) connected to the left and right ends of the upper surface of the rotating member (7) are inserted into the insertion hole (25) formed in the front plate (3) of the drawer (2) and the rectangular shape. The handle (4) inserted through the hole (18) is fixed by screwing a screw (27) into the female screw hole (26) at the rear end of the support (4a).

  A pair of left and right operating pieces (28), (28) are connected to the upper surface of the rotating member (7) between the two upward pieces (24), and the front surfaces of the two operating pieces (28) are At the middle part of the operating rod (8), it is in contact with the rear surfaces of a pair of left and right rotating plates (29) and (29) which are inclined obliquely rearward and downward and whose upper ends are fixed (see FIG. 4).

  The insertion hole (25) formed in the front plate (3) is larger than the cross-sectional shape of the support (4a) of the handle (4). Especially, the vertical dimension allows the support (4a) to move up and down without any problem. As can be seen, it is larger than the vertical dimension.

  A rectangular frame-shaped cover member (30) having a size capable of covering the opening edge of the insertion hole (25) is fitted into the inner edge of the opening of the insertion hole (25) as shown in an enlarged view in FIGS. ing.

  On the outer peripheral surface excluding the lower surface of the cover member (30), that is, both the left and right surfaces and the upper surface, a concave groove (31) fitted to the left and right and upper opening edges of the insertion hole (25) to be slidable vertically And a slightly longer locking barb (32) that is locked to the back surface of the upper opening edge of the insertion hole (25) is projected on the upper surface of the rear portion of the upper groove (31) forming portion. Has been.

  When the handle (4) inserted through the rectangular hole of the cover member (30) and the insertion hole (25) of the front plate (3) is pulled diagonally forward and downward to rotate the rotating member (7), the insertion hole A gap is formed between the upper opening edge of (25) and the upper surface of the handle (4). As shown in FIG. 8, this gap is the depth of the concave groove (31) in the cover member (30). By sliding downward within the range of, it is occluded. Therefore, the appearance is prevented from being impaired.

Next, the operation of the latch operation device (5) of the above embodiment will be described.
When the handle (4) of the drawer (2) is pulled forward in the state of being accommodated in the housing (1), as shown in FIG. 5, the rotating member (the lower end of which is pivotally attached to the support substrate (6)) ( 7) pivots forward. Then, the rotating plate (29) that is in contact with the front surface of the operating piece (28) of the rotating member (7) is pressed forward, so that the operating rod (8) to which it is fixed is shown in FIG. It is turned clockwise in a side view.

  As a result, the crank-shaped left and right bent portions (8a) rotate forward, and the left and right latch shafts (10) and the left and right latches (9) and (9) fixed to the lower ends thereof are as shown in FIG. Further, it is rotated in the clockwise and counterclockwise directions in plan view against the return spring (33).

  As a result, the engagement holes (9a) of both latches (9) are disengaged from the locking projections (not shown) provided on the inner surface of the housing (1), and the drawer (2) can be pulled forward. Become.

  In this manner, the latch (9) can be released and the drawer (2) can be continuously pulled out by one operation of simply pulling the handle (4) forward, so that the operability is improved.

  In addition, since the drawer (2) is pulled out after the latch (9) is released first, even if the handle (4) is pulled, the force that the latch (9) tries to strongly engage with the locking projection is generated. The drawer (2) can be pulled out with a light force with little effect, and there is no fear that the latch (9) or the locking projection will be worn out.

Since the vertical dimension of the rotating member (7) is relatively large and rotates around its lower end, and the handle (4) is attached to the upper end of the upward piece (24), the handle (4) When it is pulled, it becomes a rotation motion close to a straight line, and an operation feeling without a sense of incongruity is obtained.
Further, since the rotational moment of the rotating member (7) is also reduced, the handle (4) can be easily operated with a small force.

It is a perspective view of the cabinet to which the present invention is applied. It is a disassembled perspective view of the latch operation apparatus of this invention. It is the III-III line enlarged vertical side view of FIG. It is the IV-IV line expansion vertical side view of FIG. Similarly, it is an enlarged vertical sectional side view when a handle is pulled. It is a front view of the cover member attaching part in a drawer front board. It is a VII-VII line vertical side view of FIG. It is a vertical side view when a cover member similarly slides below. It is the IX-IX line crossing top view of FIG.

(1) Housing
(2) Drawer
(3) Front plate
(4) Handle
(4a) Support
(5) Latch operation device
(6) Support substrate
(7) Rotating member
(7a) Foot piece
(8) Operation rod (operation member)
(8a) Bending part
(9) Latch
(9a) Engagement hole
(10) Latch operation shaft (operation member)
(11) Back plate
(12) Receiving part
(13) Holding groove
(14) Screw
(15) Support piece
(16) Holding groove
(17) Receiving part
(18) Square hole
(19) Shaft hole
(20) Pivot
(21) Slit
(22) Spindle (Axis)
(23) Screw
(24) Upward piece
(25) Insertion hole
(26) Female thread hole
(27) Screw
(28) Actuator
(29) Rotating plate
(30) Cover member
(31) Groove
(32) Locking collar
(33) Return spring

Claims (4)

A handle is inserted into an insertion hole formed in the front plate of the drawer so that the handle can be operated forward, and a rear end of the handle is pivotally attached to the back side of the front plate so as to be pivotable back and forth. while connected to an upper end, provided front operating piece projecting from the upper end of the rotating member, the operating rod facing the lateral direction definitive to the operation member for the latch operation to disable the pull-out from the housing of the drawer The rotating member and the operating member are linked to each other by abutting against the rear surface of the downward rotating plate , and the latch and the latch provided on the casing are operated by operating the handle forward. A drawer latch operating device, wherein the drawer is disengaged and the drawer can be pulled out.   2. The handle according to claim 1, wherein the handle has a U-shape facing backward in plan view, and the rear ends of the left and right rear supports are connected to both side ends of a rotating member pivotally attached to a pivot whose lower end faces the left and right direction. Latch operating device for drawer.   An upper piece protrudes from the upper end of the rotating member, and the rear end of the handle is connected to the upper piece, and the rotating member is pivotally attached to the lower end portion, thereby connecting the handle connecting portion and the pivot attaching portion. The drawer latch operating device according to claim 1 or 2, wherein the upper and lower portions are separated from each other. A support substrate facing the vertical direction is provided between the back surface of the front plate and the rotating member, and a lower receiving portion and a concave receiving portion projecting from the upper end portion on the rear surface of the supporting substrate respectively, The drawer latch operation device according to any one of claims 1 to 3, wherein an operation rod facing the left-right direction of the operation member is rotatably supported.

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