JPH0280773A - Drawer latch mechanism - Google Patents

Abstract

PURPOSE:To eliminate such a process of work as providing a bearing piece to a rear plate by providing bearing sections to a pull handle member and loading the pull handle member to the rear plate of a drawer. CONSTITUTION:A pull handle member 15 is constituted of a step section 18, one bearing section 20 provided with a bearing hole 19 to bear one end of a turning lever 30 so that it is capable of turning, a bearing section 21, and a mounting section 23 provided with one mounting hole 22. After that, a guide member 26 provided with the other mounting hole 25 on a root section is provided integrally to the pull handle member 15, and a control member 27 is supported on the turning lever 30. A pull handle member 60 is so loaded to a rear plate 77 of a drawer 71 that the upper edge of the pull handle member 60 is slightly projected from a notch section 83. According to the constitution, such adjustments as an arrangement relation between the pull handle member and control member and a turning operation of the turning lever can be made before loading.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This application relates to a drawer latching mechanism in filing cabinets and the like.

Conventional technology Traditionally, in filing cabinets, etc., a drawer was used to prevent the drawer from accidentally popping out due to external vibrations such as earthquakes.
A latch mechanism for fixing the drawer to the cabinet in the stored state is known, for example, in Japanese Utility Model Publication No. 6023412, and its structure includes a horizontally extending rotation rod inside the pull member constituting the pull portion of the drawer. The rotating rod is attached to the back plate constituting the front part of the drawer so that an operating member that is supported and tilted is interposed therein, and an operating part extending from the lower end thereof is further provided on the back plate. The rotation of the rotating rod caused by the tilting of the operating member is transmitted to the driven rod extending in the vertical direction through an operating section provided at the extended end of the rotating rod, and the rotation of the driven rod causes the rotation of the rotating rod. The latch lever, which is pivotally supported by the latch lever, is moved against the biasing force of the latch lever to release the latch stopper provided on the cabinet.

Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, a pull member is sandwiched between the back plate and the front plate that constitute the front part of the drawer, and a rotating rod supporting an operating member is provided. The structure is such that it is supported by a bearing piece provided at the center of the back plate, and the extended end of the rotating rod that acts with the driven rod is further supported by another bearing piece provided on the side of the back plate. If there is any manufacturing error between the bearing pieces installed at the center and the sides of the back plate, the smooth rotation of the rotating rod will be impaired. However, this method has disadvantages such as the risk of risk and the troublesome adjustment of the positional relationship between the pull member and the operating member.

Therefore, the present application aims to eliminate the above-mentioned defects of the conventional devices.

Means for Solving the Problems In order to achieve the above-mentioned object, the present application provides a mechanism in which a horizontally extending rotating rod is provided in a pull member provided between the back plate and the front surface of the drawer. An operating member that is supported and tilts is arranged, and the rotation of the rotating rod accompanying the tilting of the operating member is
The signal is transmitted to a vertically extending driven rod through an actuating portion provided at one end, and the rotation of this driven rod moves a latch lever pivotally supported thereon against the biasing force. In the drawer latch mechanism configured to release the latch from the latch stopper, the pull member is provided with a shaft bearing, and the pivot rod supporting the upper edge of the operating member is rotatably supported on the shaft bearing. and is arranged in the pull member, and an actuating part is provided by bending into an L-shape at one end of the rotating rod, and this actuating part is provided on a guide member protruding from a side surface of the pull member. The pull member is fitted into a guide groove that opens in the vertical direction, and the pull member is attached to the back plate of the drawer. The operating member has a vertically elongated fitting hole opening on the front surface at the upper edge thereof, and a plurality of V-shaped bent portions are formed on the rotating rod, so that the operating member The position where the part is formed is press-fitted into the fitting hole part, and the pull member rotatably supports the rotating rod on the upper part of the left and right side plates of the horizontally elongated frame body consisting of the back plate, the bottom plate, and the left and right side plates. The pull member has a horizontally long frame consisting of a back plate, a bottom plate, and left and right side plates, which is suitable for use in cases where the vertical width of the drawer is short, for example, the top drawer. Bearing portions for rotatably supporting a rotating rod are provided at left and right positions on the lower surface of the bottom plate of the body, respectively, and a horizontally elongated opening hole is bored in the bottom plate to allow intervention of an operating member. .

Function: When the drawer is housed in the cabinet and the latch lever is in the latched state where it is locked to the latch stopper, if you intervene with your hand on the pull part and tilt the operating member toward you, the rotating lever will move. rotates, and the rotation is transmitted to the driven lever, causing the latch lever to rotate horizontally and detach from the latch stopper, releasing the latched state and allowing the drawer to be pulled out.

Embodiment The embodiment of the present application will be described in detail below based on the drawings. Figure 1 is a vertical side view of the front part of the drawer (1).
In 1), a back plate (3) is provided vertically on the front of the container (2), and a top plate (4) is attached to the front of the container (2). is provided with a pull opening (6) having an inwardly directed rib (5) on the periphery.

The back plate (3) has a collar piece (8) on the upper edge and left and right side edges, which is bent forward and protrudes horizontally, and has a step (7) along the middle position of the protruding length. ), and a flange piece (10) is also integrally provided on the lower edge, which similarly protrudes horizontally and has a downwardly directed convex strip (9) along the middle position of the protruding length.

The top edge and left and right side edges of the surface plate (4) are respectively bent backward and protrude horizontally, and are engaged with the step (7) of the collar piece (8) along the leading edge thereof. A covering piece (12
) is similarly bent rearward and protrudes horizontally from the lower edge, forming an upward protruding strip (13) along the middle position of the protruding length, and this protruding strip ( Attachment pieces (14) fixed to the flange pieces (10) are provided integrally at positions 13). 4 to 6 show the pull member (15
), and this pull member (15) has a bottom plate, a back plate, and left and right side plates, and a horizontal crosspiece ( A horizontally elongated frame (17) that horizontally suspends a frame (16), and a stepped portion (
18), one shaft bearing part (20) provided in an upright manner on the upper surface of one side plate, and having a bearing hole (19) for rotatably supporting one end of a rotating rod (30), which will be described later; The other shaft bearing part (21) is provided on the upper surface of the other side plate and grips and rotatably supports a rotation rod (30), which will be described later, from the front;
The other side plate of the pull member (15) configured in this way includes a mounting portion (23) provided on the outer surface of one side plate near the back side and having one mounting hole (22) therein. On the outer surface, guide grooves (24), (24)' are provided which protrude horizontally and are open in the front and vertical directions by a pair of vertical pieces facing each other at two places on the front, and A guide member (
26) are integrally provided, and these are integrally molded from synthetic resin.

FIG. 7 shows an operating member (27) interposed within the pull member (15), and this operating member (27) has a vertically elongated fitting hole (28) with an open front surface at the top. It is composed of a horizontally elongated synthetic resin plate with a forwardly sloped slope portion (29) integrally formed at the bottom thereof.

FIG. 8 shows a rotating rod (30), which is attached to one end of a long horizontal part (31) and has a short operating part (3
2), and two figure-7-shaped bent portions (33), (33) are formed in a part of the horizontal portion (31).

The pull member (15), the operating member (27), and the rotating rod (30) configured as described above are the operating member (27).
) from the front side into the fitting hole (28) of the rotating rod (30).
After supporting the operating member (27) on the rotating rod (30) by press-fitting the bent portions (33), (33) of the horizontal portion (31), the operating member (27) is attached to the frame ( 17), the horizontal portion (31) of the rotating rod (30) is rotatably supported by the left and right shaft bearings (20), (21), respectively, and the actuating portion (32) is, for example, When the width of the drawer (1) is wide, the operating part (
32) into the outer guide groove (24), or if the width of the drawer (1) is narrow, cut a part of the guide member (26) and insert it into the inner guide groove (24). In this state, the lateral position of the rotating rod (30) is regulated, and the operating member (2) relative to the pull member (15) is restricted.
7) and the rotational movement of the rotation rod (30) are adjusted. After adjustment, the pull member (15) is attached to the front surface of the back plate (3) with set screws through the mounting holes (22) and (25), and then the collar piece (8) of the back plate (3) is attached. ) to,
The surface plate (4) and the cover piece (12) are overlapped, the engagement piece (11) is engaged with the step part (7), and the engagement rib (5) provided at the pull opening part (6) is ), the paragraph part (16) of the frame (17)
The front plate (4) is attached to the back plate (3) by engaging with and (18) respectively, superimposing the attachment piece (14) on the collar piece (10), and fixing it with, for example, a set screw. It will be done.

FIG. 9 shows an exploded perspective view of the driven rod (35) and the latch actuation plate (36), and the driven rod (35) has a corner portion (37) at the bottom and an L-shape at the top. The latch actuating body (36) is provided with a contact portion (38) which is bent into a shape and comes into contact with the actuating portion (32), and the latch actuating body (36) has a vertically-oriented mounting casing (39) with an open front. , a latch lever (40), and a coiled biasing spring (41).

The mounting casing (39) has contact ribs (42) on the left and right edges of the front surface that are lowered and protrudes laterally, and a locking rib (43) that protrudes downward in an L-shape on the lower edge of the front surface. Furthermore, in the center of the upper edge, there is a locking piece (46) which is separated by two parallel cutting lines (44) and has elastic force in the vertical direction, and has an upward locking protrusion (45) at the tip. ) are provided integrally with each other, and inside there is a pair of partition pieces (47
), (47), and a receiving piece (48) that protrudes at the center position and has an arcuate concave front edge are each integrally provided. Furthermore, a cut groove (49) is provided on one side of the mounting casing (39), and an insertion hole (50) penetrating from the top surface to the bottom surface.
is perforated.

The latch lever (46) has a horizontal rectangular shape, has a latch hole (51) penetrating in the thickness direction at the tip, and has a notched recess (51) cut out in the upper surface leaving a shaft (52) at the rear. 53), and has a retaining groove (54) on the side surface that communicates with the notch recess (53) and extends in the longitudinal direction, and the shaft (52) has a retaining groove (54) that extends in the vertical direction. hand,
A square hole (
55) is perforated.

Therefore, a spring (41) is attached to the upper part of the shaft part (52).
At the same time, one of the pieces (
41)b is engaged with the engagement groove (54), and in this state, the upper and lower partition pieces (47) in the housing (39), (47)
In between, the shaft part (52) of the latch lever (40) is intervened, and its back surface is brought into contact with the front edge curved part of the receiving piece (48). Then, the piece of spring (41) that was wide open (
41) b and (41) c are pressed inward and have elasticity, and in this state, the other piece (41) c is attached to the housing (39).
When the latch lever (40) is engaged with the cut groove (40), the latch lever (4
0) is applied with a horizontal rotational force in one direction.

Next, insert the corner portion (37) of the driven rod (35) into the insertion hole (50).
) and the square hole (54).

As mentioned above, the latch actuating body (
36), the drawer (1) is installed before attaching the surface plate (4).
) Square mounting hole (55) provided on the negative side of the back plate (3)
the abutting rib (42) to the front of the back plate (3), and the locking rib (43) and the locking protrusion (45) to the back of the back plate (3). At the same time, the contact portion (38) is pressed into contact with the operating portion (32) of the rotating rod (30) by the biasing force against the latch lever (40), and this pressing force causes the operating member (26) to be in the normal state. in,
As shown in FIG. 1, it is held in a nearly vertical position.

(56) indicates a cabinet that stores the drawer (1);
A latch stopper (57) protrudes from the inner wall of the cabinet (56) on the front opening side, as in the conventional case.

However, under normal conditions, the latch lever (4o)
As shown in FIG. 3, the cabinet (56) is biased to rotate in one direction by the spring (41).
), the latch hole (51) is engaged with a latch stopper (57) protruding from the inner wall of the cabinet (5
6) It is latched when stored inside.

From this latched state, in order to pull out the drawer (1), insert your hand into the pull member (I5) through the opening (6) and pull the operating member (27) in the vertical position toward you. 27), the actuating part (3) of the rotating rod (30)
2) also tilts toward the front, and the contact portion (38) that is in pressure contact with the actuating portion (32) is pressed toward the front, causing the latch lever (40) to release the spring (
The latch hole (51) rotates horizontally against the urging force of the latch hole (51).
detaches from the latch stopper (57) and opens the drawer (1).
The latched state of is released, and the drawer (1) is pulled out in this state.

Also, the drawer (1) is pulled out, and the latch lever (
40) is biased by the spring (41), and when the drawer (1) is pushed into the cabinet (56),
The tip of the latch lever (40) is connected to the latch stopper (5).
7), the latch hole (51) automatically locks with the latch stopper (57) after moving about 1 time against the biasing force of the spring (41).

Figure 12.13 shows a drawer that is stored at the top of a cabinet, for example, because its front surface is low in height.
This shows another embodiment that is effective in cases where it is difficult to configure the pull part at the center position in the height direction.The main difference from the first embodiment is that the rotating rod is The operating member is rotatably attached to a lower position of the pull member, and the operating member is inserted into the pull member through an opening provided in the bottom plate of the pull member.
It is at a point that is almost vertical.

That is, the pull member (60) has a bottom plate, a back plate, and left and right side plates, and has a stepped portion (61) at the top along the front edge of the bottom plate.
) horizontally extending the horizontal frame (63)
), a stepped portion (64) provided on the front edge of the left and right side plates of this frame (63), and a stepped portion (64) provided in a hanging manner on the lower surface of one of the side plates, to which the rotary rod (30) is integrally rotated. One shaft bearing part (66) has a support hole that can support the rotating rod (30) from the front, and the other shaft bearing part (67) is provided on the lower surface of the side plate and supports the rotating rod (30) from the front. A mounting part (68) provided on the outer surface of the side plate near the back side and having a mounting hole therein.
The bottom plate of the frame (63) is provided with an opening (69) that extends in the longitudinal direction and allows the operating member (27) to tilt. A guide member (26) is integrally provided in the same way as in the first embodiment.

Therefore, the shaft bearing part (66) of the pull member (60), (6
7) rotatably supports a rotating rod (30), and an operating member (27) attached integrally to the rotating rod (30).
) to face the inside of the frame (63) through the opening hole (69), and with the operating portion (32) of the rotating rod (30) facing upward,
It engages with the guide grooves (24) to (24)' of the guide member (26).

On the other hand, the front part of the drawer (71), like the drawer (1), protrudes horizontally forward at the upper edge and left and right side edges, respectively, and has a step part (72) along the middle position of the protruding length. ) and a collar piece (75) which projects horizontally from the lower edge and has a downward convex strip (74) along the middle position of the projecting length. a back plate (77),
The upper edge and the left and right side edges each had a downwardly directed engagement piece (78) that protruded horizontally backward and engaged with the step (72) of the collar piece (73) along the leading edge thereof. Cover piece (79)
Also, an upward protruding strip (80) is formed which protrudes horizontally from the lower edge and extends along the middle position of the protruding length, and at the position of this protruding strip (80), the flange piece (75) is attached. It consists of a front plate (82) integrally provided with mounting pieces (81) to be fixed, and a collar piece (82) protruding from the upper edge of the back plate (77).
A notch (83) is formed at the center of the cover (73) and a center of the cover (79) protruding from the upper edge of the surface plate (82), respectively.
84), and the top plate (82) is provided with a pull opening (84) such that the upper edge is open at the position of the notch (84).
85) is provided, and an inward lip (86) is provided on the periphery of the pull opening (85), and the pull member ( 60)
is attached so that the upper edge of the pull member (60) slightly protrudes from the notch (83), and the front plate (82) is attached to the back plate (77), and the inward rib (
86) engages with each of the paragraph parts (61) and (64).

Effects As described above, according to the present application, the guide member is integrally provided on the pull member, a rotating rod supporting the operating member is attached, and this pull member is attached to the back plate of the drawer. Before installation, it is possible to adjust the arrangement of the pull member and the operating member, the rotation of the rotating rod, etc., and
It is extremely convenient for manufacturing since the attachment of the rotating rod and the guide member to the drawer can be omitted, and the operating member has a vertically elongated fitting hole that opens at the front on the upper edge, and A plurality of V-shaped bent portions are formed in the holder, and the positions where the bent portions are formed are press-fitted into the fitting hole, so that the operating member and the rotating rod can be integrated, and the operating member can be The rotation rod can be rotated reliably no matter what position on the lower edge is operated, and the pull member is attached to the lower surface of the bottom plate of the horizontally long frame consisting of the back plate, bottom plate, and left and right side plates. For example, when the bottom plate is provided with shaft bearings for rotatably supporting the rotation rod at the left and right positions of the cabinet, and a horizontally elongated opening hole is formed in the bottom plate to allow the intervention of the operating member. It has the advantage of being particularly effective for drawers with short height dimensions, such as drawers located on the upper stage.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, and FIG. 1 is a partial vertical sectional side view of the state in which it is attached to a drawer, FIG. 2 is a front view of the same with the surface plate omitted, and FIG. 3 is a partially cutaway plan view of the same. 4 is a perspective view of the pull member, FIG. 5 is a front view thereof, FIG. 6 is a longitudinal sectional side view thereof, FIG. 7 is a partially omitted perspective view of the operating member, and FIG. 8 is a rotating rod. FIG. 9 is an exploded perspective view of the driven rod and the latch actuating body, FIG. 10 is a vertical cross-sectional side view of the latch actuating plate, FIG. 11 is a cross-sectional plan view of the same, and FIG. 12 is the other FIG. 13 is a perspective view of the pull member in the embodiment, and FIG. 13 is a sectional view corresponding to FIG. 1 when the pull member is used. In the figure, (1) and (71) are the drawers, (2) is the container, and (
3) (77) is the back plate, (4) and (82) are the front plate,
(5), (86) are inward ribs, (6), (8
5) is the pull opening part, (15) and (60) are the pull member, (
16), (62) are horizontal bars, (17), (63) are frames, (20), (21), (66), (67) are shaft bearings, (24), (24)° are guides. Groove, (26)
(27) is the operating member, (28) is the fitting hole portion, (30) is the rotating rod, (32) is the actuating portion, (33) is the bending portion, (35) is the driven rod, ( 36) is the latch operating body, (
38) is a contact portion, (40) is a latch lever, (41) is a spring, (56) is a cabinet, and (57) is a latch stopper.

Claims (5)

[Claims] (1) An operating member that is supported and tilted by a horizontally extending rotation rod is disposed within a pull member provided between a back plate and a front plate that constitute the front part of the drawer, and the tilting of this operating member is The rotation of the rotating rod accompanying this is transmitted to the driven rod extending in the vertical direction via the actuating part provided at one end, and the rotation of the driven rod applies the biasing force to the latch lever pivoted thereon. In the drawer latch mechanism, which is configured to move against a latch stopper provided on the cabinet to release the latch, the pull member is provided with a shaft bearing, and the upper edge of the operating member is attached to the shaft bearing. A supported rotating rod is rotatably supported and disposed within the pull member, and an operating portion is provided at one end of the rotating rod by being bent into an L-shape, and this operating portion is connected to the pull member. A latch mechanism for a drawer, characterized in that the pull member is fitted into a guide groove opening in the vertical direction provided on the front surface of a guide member protruding from the side surface of the drawer, and the pull member is attached to a back plate of the drawer. (2) The drawer latch mechanism according to claim 1, wherein the guide groove is formed by a pair of vertical pieces facing each other in the longitudinal direction of the guide member. (3) The operating member has a vertically elongated fitting hole that opens on the front surface on the upper edge, and a plurality of V-shaped bent portions are formed on the rotating rod to form the bent portion. 3. A latch mechanism for a drawer according to claim 1, wherein said position is press-fitted into said fitting hole. (4) Claims 1 and 2 in which the pull member is provided with shaft bearings for rotatably supporting a rotating rod on the upper portions of the left and right side plates of an oblong frame consisting of a back plate, a bottom plate, and left and right side plates. or the drawer latch mechanism described in 3. (5) The pull member is provided with shaft bearing portions for rotatably supporting the rotation rods at left and right positions on the lower surface of the bottom plate of an oblong frame consisting of a back plate, a bottom plate, and left and right side plates, and the bottom plate 4. The drawer latch mechanism according to claim 1, wherein the drawer latch mechanism is provided with a horizontally elongated opening hole for allowing intervention of the operating member.