JPH0118772Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a door latch device for furniture such as lockers.

A latch device is provided in which a single or double door is provided at the opening of the main body of a storage device such as a locker or clothing storage, and the door is attached to and detached from the main body of the locker. The longitudinal latch rod is arranged inside the door parallel to the free edge of the door, and the tip of the pull member attached to the latch rod faces the opening pull hole of the door, while being able to engage and disengage from the engaging part on the main body side. Latch pawls are either attached to both ends of the latch rod itself so as to be able to rotate in response to the rotation of the latch rod, or are provided within the door so as to be associated with the ends of the latch rod. It is rotatably supported on the inside of the door. Therefore, if the latch pawl or pull member is attached to the latch rod in advance, the bearing member of the latch rod must be fixed to the inside of the door afterwards. In order to fix it and fit the latch rod into it, it is necessary to drill a hole through which the latch rod can be inserted in the end plate on one side of the door in the direction in which the bearing hole extends, and to fit the latch rod through there. However, a separate means for engaging the latch rod in an axially immovable manner is required, which increases the cost.

The present invention does not require any separate parts to attach the latch rod and latch pawl, and moreover, the latch rod can be extremely easily fitted into both bearing members that are fixed to both ends of the inside of the door in advance. By configuring the latch to prevent it from falling off, the cost of the latch device can be reduced.

Next, an embodiment of the present invention will be described based on the drawings. Reference numeral 1 denotes a metal rocker, and the rocker 1 includes a rocker body 2 and a door 4 attached to the opening of the rocker body 2 so as to be able to open on the right side and rotate freely. A pull frame 5 made of synthetic resin or the like is attached to a pull hole formed in a suitable front plate 4' near the open free end of the door 4.

In the latch device of the present invention, a latch rod 3 with latch claws 6, 6 attached to both ends is indirectly rotated from the pull hole, and a latch rod 3, which has latch claws 6, 6 attached to both ends, is indirectly rotated from the pull hole. 4' and on the back side of door 4.
A rotation shaft 7 is pivotally supported near the open free end of the door 4 through a pair of upper and lower brackets 8, 8 so as to be substantially parallel to the pivot axis of the door 4.

A base end of a pull member 9 having a stepped portion 9' in the middle is fixed to the rotation shaft 7, and the tip of the pull member 9 faces the pull hole and is connected to the door 4.
It is configured so that it can rotate in the front direction.

The latch rod 3 is located between the rotation shaft 7 and the tip of the pull member 9 and between the front plate 4' of the door 4 and the pull member 9. installed in parallel.

At least the upper and lower ends of the latch rod 3 are formed to have a non-circular cross section such as a rectangular cross section over an appropriate length, but in this embodiment, the latch rod 3 is constituted by a rod having a square cross section over its entire length. .

The base end of the lever 10 is fixed to the latch rod, and the back surface of the tip end of the lever 11 is attached to the pull member 9.
For example, by bringing the tip of the pull member 9 into contact with the surface of the stepped portion 9' and rotating the tip of the pull member 9 toward the front of the door 4 (in the direction of arrow A), the lever 10 can be moved. The latch rod 3 is rotated in the same direction as the pull member 9, and the rotation angle of the latch rod 3 is configured to be larger than the rotation angle of the pull member 9.

The upper and lower brackets 8, 8 that pivotally support the rotation shaft 7 of the pull member 9 are provided with upper and lower support grooves 11, 11 that are parallel to the door front plate 4' and open toward the pull frame 5.
A midway portion in the longitudinal direction of the latch rod 3 is inserted into the support grooves 11, 11 from the opening direction and supported rotatably.
The width of the opening 11 is such that one side of the cross section of the latch rod 3 can be inserted therethrough, and the inner diameter of the support groove 11 is approximately equal to the maximum diagonal dimension of the cross section of the latch rod 3.

Reference numerals 12 and 12 designate bearing members having an L-shaped cross section that rotatably support both upper and lower ends of the latch rod 3. The base portions of the bearing members 12 and 12 are fixed to the inner surface of the door 4 by welding or the like, and the horizontal portions of each bearing member 12 are 12' is a circular shaft hole 1 corresponding to the circumcircle of the non-circular cross section at both upper and lower ends of the latch rod 3.
3, and the horizontal portion 12' is arranged in parallel with the upper and lower side edge plates 14, 14' of the door 4 at an appropriate distance apart, and the upper and lower side edge plates 14, 14' and the horizontal portion 12' .

The bearing member 12 has a vertically symmetrical shape so as to be a common part, and has two bearing holes 13 on the left and right sides.

Furthermore, 15 is a guide hole bored in the upper edge plate 14 of the door 4 at a position extending from the circular bearing hole 13;
The guide hole 15 is formed, such as a square hole, to have substantially the same shape as the non-circular cross-sectional shape of the upper end of the latch rod 3, and the latch claw 6 attached to the latch rod 3 is rotated by an appropriate angle θ around the axis of the locker body. 2. When held in a disengaged state from the hole-shaped engagement portion provided on the front surface of the front frame, the upper end of the latch rod 3 can penetrate the guide hole 15 by an appropriate amount and protrude outward;
Therefore, the lower end of the latch rod 3 can be directed from the inner surface of the door 4 toward the circular bearing hole 13 of the lower bearing member 12.

Reference numeral 16 denotes a spring that biases the latch claws 6, 6 in the direction of engaging the hole-shaped engagement portion on the front surface of the front frame of the rocker body 2. Latch rod 3 that can be locked 1
It is installed between one end of 9 and the inner surface of the door 4, and 20 is a cover body that covers the lock 17 and the pull frame 5 from the inside of the door.

To assemble the latch device according to this embodiment, the latch rod 3 is placed along the inside of the door 4 as shown in FIG. A latch pawl 6 is disposed between the upper edge plate 14 and the bearing member 12, and the upper end of the latch rod 3 is inserted into the base fitting hole of the latch pawl 6 from the bearing hole 13 of the bearing member 12. In this state, when the latch pawl 6 is tilted by an angle θ as shown by the two-dot chain line, the guide hole 15 of the upper edge plate 14 and the upper end section of the latch rod 3 are in phase with each other, so the upper end of the latch rod 3 is tilted in this direction. It is made to protrude from the upper edge plate guide hole 15 by an appropriate amount. Then, the lower end surface of the latch rod 3 is located above the bearing member 12 below the door 4, so that the bearing member 12 and the lower edge plate 1
4', the latch rod 3 is bent against its own elasticity, and is inserted into the fitting hole of the latch pawl 6 from the bearing hole 13 of the bearing member 12. It is sufficient to move the latch rod 3 downward as shown in FIG. . Next, when the pull frame 5, the pull member 9, the lock 17, and the spring 16 are installed in sequence, the relationship between the latch rod 3 and the guide hole 15 changes as shown in FIG. does not come out of the guide hole 15.

The non-circular cross-sectional shape of both ends of the latch rod 3 is not limited to a regular square, but may be hexagonal or circular. Furthermore, the latch pawl 6 shown by the two-dot chain line in FIG.
with the guide hole 1 rotated in the opposite direction.
5, the latch rod 3 may be configured to protrude outward from the upper edge plate.

In short, the present invention is such that one side of the door is rotatably pivoted to the furniture body, and a single longitudinal latch rod is disposed on the inner surface of the door approximately parallel to the pivot shaft, and one side of the door is provided near the free end of the door. The vicinity of both ends of the latch rod is rotatably supported by a pair of bearing members fixed close to a pair of side edge plates, and latch pawls are non-rotatably fitted to each end of the latch rod. The latch rod is rotated by operation from the front side of the door to engage and disengage the latch claws from the engaging portion on the furniture main body side, and the cross-sectional shape of at least both ends of the latch rod is The latch rod is formed in a non-circular shape, and the bearing holes of both the bearing members are formed in a circumscribed circle of the cross-sectional shape of both ends of the latch rod,
On the side edge plate of the door adjacent to the one bearing member,
A guide hole is bored through which one end of the latch rod can be moved in the axial direction by an appropriate amount only when the latch rod is rotated appropriately around the axis,
Since the cross-sectional shape of both ends of the latch rod is formed into a non-circular shape, the latch pawl can be attached to the latch rod without the need for any separate parts by forming a fitting hole for the latch pawl to fit therein. If the latch pawl is disposed between the door and the edge plates on both sides of the door, there is no danger that the latch pawl will slip out of the latch rod.

Furthermore, the guide hole makes it extremely easy to fit both ends of the latch rod into the bearing member and the latch pawl, which also has the effect of reducing the cost of the latch device.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view of the locker, Fig. 2 is an inside front view of the door, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 4 is Fig. 3. of-
5 is a sectional view taken along the - line in FIG. 3, FIG. 6 is a sectional view taken along the - line in FIG. 3, FIG. 7 is a sectional view taken along the - line in FIG. FIG. 9 is a cross-sectional view taken along the - line of FIG. 1... Locker, 2... Body, 3... Latch rod, 4... Door, 6, 6... Latch claw, 12, 12
... Bearing member, 14, 14' ... Side edge plate, 13,
13... Bearing hole, 15... Guide hole.

Claims (1)

[Scope of utility model registration request] One side of the door is rotatably pivoted to the furniture body, and a longitudinal latch rod is arranged on the inner surface of the door approximately parallel to the pivot shaft, and a pair of side edges near the free end of the door are provided. The vicinity of both ends of the latch rod is rotatably supported on a pair of bearing members fixed close to the plate, and latch pawls are non-rotatably fitted to each end of the latch rod, so that the door In the structure in which the latch rod is rotated by operation from the front side to engage and disengage the latch claws from the engaging portion on the furniture body side, the cross-sectional shape of at least both ends of the latch rod is formed to be non-circular. The bearing holes of both bearing members are formed in a circumscribed circle of the cross-sectional shape of both ends of the latch rod, while the side edge plate of the door adjacent to the one bearing member is provided with a hole that allows the latch rod to be rotated as appropriate around the axis. A latch device for a door in furniture, which is provided with a guide hole that allows one end of the latch rod to be moved in the axial direction by an appropriate dimension only when the latch rod is in the latched state.