JP2002004686A - Latch lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a latch lock in which a latch bar is kept in the unlock position in unlocking. SOLUTION: With the latch bar 2 always energized in the unlocking direction by a spring 3 taking the locking position against the resilient force of the spring 3 by operating a lever 4, the lever 4 is locked by a locking means 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch lock used for mounting and holding panels such as a door, a lid, and a side plate of a box.

[0002]

2. Description of the Related Art In a conventional latch lock, a latch rod is constantly urged by a spring in a locking direction so that a tip engaging portion is engaged with a locking portion provided on a panel to perform locking and unlocking. Occasionally, the operation of the lever causes the latch rod to be operated in the unlocking direction against the spring (for example, Japanese Patent Application Laid-Open No. 10-8808).

[0003]

However, in such a conventional device, the latch rod is always urged in the locking direction by a spring, so that the locked state is accurately maintained, but the unlocked state is maintained. For this purpose, it is necessary to hold the lever with fingers against the spring. When two or more latch locks are used as fasteners on the panel, it is necessary to hold each latch lock in the unlocked position. There was a problem that was difficult for human workers.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a latch lock according to the present invention provides a latch rod which is always urged by a spring in an unlocking direction by operating a lever. The lever is locked by locking means in a state in which the locking position is set against the lever.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention used for boards will be described with reference to the drawings. 1 is a board 1
01 is a latch lock case fixed to a panel 201 such as an inner door or a shield plate. A latch bar 2 is constantly urged by a spring 3 in an unlocking direction on the lower surface side of the case 1 so as to be slidably fitted. Have been combined. That is, the latch rod 2 is fitted with a pressing spring 3 in a groove 22 provided on the bottom surface from the front end to the base end, and the tip of the pressing spring 3 stands upright on the lower surface plate portion 11 of the front end opening 12 of the case 1. The latching rod 2 is always in the unlocked position in the case 1 by contacting the base end of the pressing spring 3 with the bottom portion 22a formed in the base end of the groove 22 in contact with the piece 11a and constantly urging the latch rod 2 backward, that is, in the unlocking direction. It is located in. It is needless to say that the tongue piece 11a is large enough to be inserted into the groove 22 so as not to hinder the slide of the latch bar 2. The latch rod 2 has shaft portions 21, 21 protruding on both sides, and slide grooves 13 a provided below both side plate portions 13, 13 of the case 1.
13a is slidably fitted to 13a. Further, the spring 3 may be configured such that a tension spring is interposed between the latch bar 2 and the back plate 15 of the case 1 to constantly urge the latch bar 2 in the unlocking direction.

Reference numeral 4 denotes a lever which is attached to an upper opening 14 provided on the upper surface of the case 1 so as to be capable of being turned upside down. Bearings 13b, 13b provided on top of 13, 13
It is pivoted on. When the lever 4 is in the down position, which is accommodated in the case 1, the locking projections 23, 23 projecting from the upper end sides of the latch rod 2 by pressing portions 41, 41 extending downward on both sides of the lever 4 are provided. To move the latch rod 2 to the locked position against the spring 3 so that the distal end engaging portion 24 of the latch rod 2 projects from the distal end opening 12 of the case 1, and the panel support portion of the panel 101. It is to be inserted into a locking hole 103 provided on the base 102.

Reference numeral 5 denotes locking means for holding the lever 4 in the case 1 in a folded state. The locking means 5 is provided with a hook 51 on the inner surface of the upper end of the center of the back plate 15 of the case 1.
And a hook 52 for pulling off the hook is stretched at the rear of the hook 51, but the lever 4 is housed in the case 1 to lock the latch rod 2 described later in the locked position. The slide lock mechanism 6 that locks in a prone state may be used.

Reference numeral 6 denotes a slide lock mechanism which locks the lever 4 in the down position accommodated in the case 1 and prevents the latch bar 2 from being unlocked even when the hook 51 is unlocked. As shown in FIG. 5, the slide lock mechanism 6 slidably fits a slide plate 61 from below into a concave step portion 44 provided on the rear surface on the base end side of the lever 4 in the front-rear direction. The operation projection 62 projecting from the center of the
4 is exposed through a slide hole 44a penetrated in the front-rear direction at the center of the slide plate 4, and the lower surface of the slide plate 61 is supported by an upper spring plate portion 71 of a leaf spring 7 described later without falling off, so that the slide plate is slidable in the front-rear direction. The lock plate portion 63 connected to the base end of the plate 61 is fitted into and removed from a lock hole 64 formed in the back plate 15 of the case 1. Note that the lower surface of the slide plate 61 will be described later.
1, the slide plate 61 at the time of engagement and disengagement of the positioning protrusion 61a projecting from the upper surface of the slide plate 61 and the positioning recess 61b provided on the concave step portion 44 of the lever 4.
The vertical movement between the lever and the lever 4 is controlled by the upper spring plate portion 7 of the plate spring 7.
1 and can be reliably locked by being absorbed.

Reference numeral 7 denotes a leaf spring which is interposed between the lower surface of the lever 4 and the latch bar 2 and is bent in a horizontal U-shape. The leaf spring 7 attaches an upper spring plate 71 to the lower surface of the lever 4. At the same time, both sides of the base end of the lower spring plate portion 72 are
The lever 4 is fitted into the case 1 by engaging with and attaching to a locking portion 42 projecting from the rear inside of the rear portion 41 so that the base end side of the lower spring plate portion 72 faces the upper end of the base end of the latch rod 2. The upper part of the base of the latch rod 2 can be pressed in the prone position. Further, since the lock mechanism 6 is supported by the leaf spring 7, and the leaf spring 7 is engaged with the lever 4, the lock mechanism, the leaf spring, and the lever can be assembled to the case 1 after being assembled. Can be.

The one constructed in this way is a board 101
A flange plate portion 1a stretched on the periphery of the upper surface of the case 1 is provided in front of the hole edge of the mounting hole 201a provided in the panel 201 such as an inner door or a shield plate.
The elastic locking pieces 13c, 13c provided on the outside of the third and the third 13 are attached to the rear surface of the hole edge of the mounting hole 201a. By operating the lever 4, the latch rod 2 is engaged with and disengaged from the locking hole 103 provided in the panel support portion 102 of the panel 101, thereby locking and unlocking the panel 201.

In the present invention, the latch rod 2, which is constantly urged in the unlocking direction by the spring 3, is brought into the locked position against the elastic force of the spring 3 by operating the lever 4. Since the lever 4 is locked by the locking means 5, when the locking of the lever 4 by the locking means 5 is released, the fixing of the latch rod 2 to the locked position by the lever 4 is released. Thus, the latch rod 2 is fixed at the unlocked position in the case 1 by the elastic force of the spring 3. In this case, the latch rod 2
Since there is no risk that the lever 4 moves in the locking direction and engages with the locking hole 103, there is no need to hold the lever 4 with fingers to take the unlocked position. The panel can be easily mounted and removed by a single worker even when the panel is used.

When the latch rod 2 is to be locked from the unlocked position, the lever 4 is turned down and the latch rod 2 is pushed down by pressing portions 41, 41 vertically provided on both sides below the lever 4.
The latch bar 2 is slid forward against the elastic force of the spring 3 by pressing the locking projections 23, 23 protruding from both sides of the upper end of the latch bar 2. As a result, the distal end engaging portion 24 of the latch bar 2 moves parallel to and projects from the distal end opening 12 of the case 1, and
Into the locking hole 103 provided in the panel support portion 102 of the above. Thereafter, if the shaft 21 is brought into contact with the tip of the slide groove 13a and the pressing is further continued, the latch rod 2 is
Is rotated to push up the distal end engaging portion 24, and the support portion 102 can be locked by scissors with the distal end engaging portion 24 and the panel 201. Therefore, if the lever 4 is locked by the locking means 5, the locked state is accurately maintained and the lock is not unlocked.

Further, a leaf spring 7 is interposed between the lower surface of the lever 4 and the latch bar 2, and the upper portion of the base of the latch bar 2 is pressed downward by the leaf spring 7 at the time of locking, so that the front end lock is provided. The engagement edge 10 of the joint portion 24 and the locking hole 103 of the board 101
The elasticity of the leaf spring 7 can absorb the difference in the gap even if the gap is slightly different from the gap 3a. Further, the leaf spring 7 absorbs vibration of the panel 201 during transportation or during an earthquake through the latch bar 2 due to its elasticity, thereby preventing the latch bar 2 from rattling.

[0014]

As described above, in the latch lock of the present invention, the latch rod constantly biased by the spring in the unlocking direction is moved to the locked position against the elastic force of the spring by operating the lever. In this state, the lever is locked by the locking means, so that the latch rod is in the unlocked position by the spring force of the spring when unlocking, so that the lever is held by fingers and unlocked. It is not necessary to be in a state. Therefore, it is a great benefit to the industry as a solution to the problem of the conventional latch lock.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of the present invention in an unlocked state.

FIG. 2 is a partially cutaway side view showing the embodiment of the present invention in a locked state.

FIG. 3 is a plan view showing the embodiment of the present invention in a locked state.

FIG. 4 is a partially cutaway front view showing the embodiment of the present invention in a locked state.

FIG. 5 is an enlarged sectional view showing a slide lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Latch bar 3 Spring 4 Lever 5 Locking means

Claims (1)

[Claims] 1. A latch bar (2) constantly urged by a spring (3) in the unlocking direction to lock the latch position by operating a lever (4) against the elastic force of the spring (3). A latch lock, wherein the lever (4) is locked by locking means (5) in the locked state.