JP2549050Y2 - Lock structure of catch lock - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for locking a catch lock.

[0002]

2. Description of the Related Art Conventionally, in a catch lock including a catch lever and a receiving member, these two members are engaged with each other.
Techniques for locking using a padlock are known or well-known. For example, Japanese Utility Model Publication No. 4-39599 discloses that a catch lock composed of a receiving bracket and an operating lever provided with a latch for engaging with the receiving bracket is used as a lid for a housing lid, and the operating lever is freely released by a padlock. There is disclosed a technique for closing a catching motion and thereby locking a catch lock. It is also well-known that the cylinder lock is embedded in the catch lever, and the catch lock provided on the cylinder tip is turned by a key operation from the outside of the catch lever to engage with the required part on the housing side to lock the catch lock. It is.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned prior art, the catch lock is locked with a padlock.
The problem is that the entire catch lock including the padlock becomes large and it is difficult to use it in a narrow place or to use it in a small housing, or when the object to which the catch lock is attached generates vibration. There is a problem that a padlock hits a housing or the like and becomes a source of noise. Also, with the catch lock with the cylinder lock embedded in the catch lever, even if these problems can be solved, it is instantly determined whether the catch lock is locked unless the direction of the keyhole of the cylinder lock is memorized There is a problem that it is not possible and inconvenient.

[0004] In view of the above, the present invention provides a catch lever engaged with a receiving metal fitting with a locking portion which can be abutted from the outside to make it impossible to release the engagement. The task is to solve it.

[0005]

Means for solving the above problems The present invention is as follows to solve the above problems.

The premise of the present invention is a structure for locking a catch lock including a catch lever attached to a movable body such as a door and a lid, and a receiving fitting attached to a fixed body such as a fixed frame.

[0007] Under such a premise, the catch lever is provided with an oblong hole having a short diameter and a long diameter. On the other hand, the catch lever engaged with the receiving member on either the movable body or the fixed body can be extended out of the through hole, and in the extended state, can be turned by a required angle in the circumferential direction of the through hole. When the required angle is turned around the extension end of the rotating shaft, the catch lever can be brought into contact with the catch lever from the outside and the engagement cannot be released. It is a feature of the present invention that a locking portion having a smaller diameter is provided.

In one embodiment of the present invention, a cylinder lock is used for the rotation shaft.

[0009]

In the structure for locking the catch lock constructed as described above, when the catch lever is engaged with the receiving fitting, the rotation shaft extends from the through hole. When the rotation shaft is turned by a required angle, a portion of the locking portion provided at the extension end of the rotation shaft that is larger than the shorter diameter and smaller than the longer diameter of the through hole is caught from the outside at the periphery of the through hole. Abut on the lever. In this state, even if an attempt is made to disengage the catch lever from the fitting, the engagement cannot be released because the catch lever comes into contact with the locking portion.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the locking structure of the catch lock according to the present invention will be described below with reference to the accompanying drawings.

FIGS. 1, 2, and 3 are perspective views showing a state in which the catch lock 1 is used for a distribution board, a sectional view taken along a line XX along a center line in a width direction, and a partial sectional view taken along a line YY. FIG.
In the figure, a catch lock 1 is composed of a catch lever 5 attached to a door 3 of a distribution board, a receiving fitting 6 attached to a fixed frame 4 of the distribution board, and a locking member 7 integrated with the receiving fitting 6. One side of the door 3 is attached to a fixed frame 4 via a hinge (not shown) so as to be openable and closable. Catch lever 5
Is composed of a lever body 10 and a link 15. The lever body 10 has a plate-shaped portion 11 and a hook portion 1 at the front end of the plate-shaped portion 11.
2, an operation portion 13 slightly narrower at the rear end of the plate portion 11, and a side wall portion 14 extending toward the door 3 from each of the opposed side edges of the plate portion 11. The substantially the center of the plate-like portion 11 there is a hole 19 oblong consisting of shorter diameter d ₁ and the major axis D ₁ Tokyo. One end of the link 15 is rotatably attached to the rear end of the lever body 10 between the side wall portions 14 via a pivot pin 16, and the opposite end of one end of the link 15 extends in the vertical direction of the surface of the door 3. It is rotatably mounted between a pair of support arms 17 that stand vertically opposite to each other via a support pin 18.

The receiving fitting 6 has a base plate 25, a movable engagement piece 26, and a spring 27 for urging the movable engagement piece 26 toward the front end of the catch lever 5. The base plate 25 is fixed to the fixing frame 4 with a screw (not shown). A dovetail type sliding groove 30 is provided at the center in the width direction shown in FIG. Support wall 3 of spring 27 at rear end
5 The groove 30 and the elongated hole 31 extend in the front-rear direction (the left-right direction in FIGS. 1 and 2) of the base plate 25, and guide the front-rear movement of the movable engagement piece 26. The movable engagement piece 26 has a V-groove 32 at the front end with which the hook portion 12 of the catch lever 5 can be engaged, and a dovetail tenon 34 slidably fitted into the groove 30 and the elongated hole 31 at the lower part. , Cylindrical projection 33
And The sliding range is regulated by the protrusion 33 contacting the front and rear ends (not shown) of the long hole 31. The spring 27 is located at the center in the width direction of the catch lock 1, and its front and rear ends are in contact with the movable engagement piece 26 and the support wall 35.

The locking member 7 is a cylinder lock, which extends the base plate 25 of the receiving fitting 6 rearward and is mounted thereon with screws (not shown). The cylinder 28A is rotatably accommodated. The cylinder 28A has a key hole 29 and a locking portion 29A at the upper end. The locking portion 29A is similar to the through hole 19, and has a short diameter d _2.
Is smaller than the minor diameter d ₁ of the holes 19 be the same in diameter of the cylinder 28A, the long diameter D ₂ is greater than the minor axis d ₂ is smaller than the diameter D ₁ of the through hole 19, the catch as shown in Figure 1 When the lever 5 and the engaging member 6 are engaged, the catch lever 5 can be extended outward.

The imaginary line in FIG. 2 shows a state in which the catch lever 5 is disengaged from the engaging member 6 and the door 3 is opened. However,
The illustration of the open door 3 is omitted. The catch lever 5 in the disengaged state is pivoted about the shaft 18 in the direction of arrow A so that the hook portion 12 is lowered and the V-groove 32
Caught on Subsequently, when the door 3 is closed while the catch lever 5 is retracted to the right in the drawing according to the arrow B, the lever 5 is closed.
Is a link 15 that retreats and turns to the right and falls down
And is approached to the door 3 to be in the engagement state shown by the solid line.

FIG. 4 shows the movement of the locking member 7 in FIG.
FIG. 3 is a partial cross-sectional view taken along line -Z. (A) shows the member 7 in the unlocked state, which corresponds to the state of FIG. (B) is the member 7 in a locked state. (A) In FIG.
Minor diameter d ₂ of the orientation 9A is consistent with the minor diameter d ₁ of the orientation of the through holes 19, the cylinder 28A is the engaging portion 29A is in a state of excluding from the hole 19 out of the catch lever 5.
A key (not shown) is inserted into the keyhole 29 and the cylinder 28
Turn 90 ° the A to the required direction, the major axis D ₂ of the engaging portion 29A is the same as the minor diameter d ₁ of the orientation of the hole 19 hole 19
, And the state shown in (b) is reached in which the catch lever 5 can be abutted from the outside. Then, when the key is removed, the locking part 2
9A can lock the catch lock 1 in the locked state by blocking the movement of the catch lever 5 in the direction of detaching from the receiving fitting 6. To unlock the catch lock 1, turn the cylinder 28A in the opposite direction using a key,
The orientation of the locking portion 29A may, combined in long diameter D ₁ of the through hole 19.

In the present invention, the catch lever 5 can be attached to the fixed frame 4 and the receiving fitting 6 can be attached to the door 3, contrary to the embodiment. Further, the locking member 7 can be directly attached to the fixed frame 4 or can be attached to the door 3 similarly to the catch lever 5. Furthermore, using this catch lock 1 for the housing, the catch lever 5 is
The receiving fitting 6 can be attached to the housing body.

[0017]

In the locking structure of the catch lock according to the present invention, the catching lever is extended from the oblong through-hole provided in the catch lever to rotate the catching lever from the outside to the catch lever. Since the catch lock is made to abut, the outer shape of the catch lock can be made relatively small, and whether the catch lock is in the locked state or the unlocked state is
It becomes obvious at a glance depending on the direction of the locking portion. If the locking portion is pressed against the catch lever and locked, the catch lock does not become a noise source even if the door or the fixed frame vibrates.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of a catch lock.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a partial sectional view taken along line YY of FIG. 1;

FIGS. 4A and 4B are partial cross-sectional views taken along the line ZZ in FIG. 1, wherein FIGS. 4A and 4B show a locking device in an unlocked state and a locking state, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Catch lock 3 Movable body (door) 4 Fixed body (fixed frame) 5 Catch lever 6 Receiving bracket 7 Locking member 19 Through-hole 29A Locking part

Claims (3)

(57) [Scope of request for utility model registration] 1. A structure for locking a catch lock comprising a catch lever attached to a movable body and a receiving bracket attached to a fixed body, wherein the catch lever is provided with an oval through hole having a short diameter and a long diameter. On the other hand, the catch lever in a state where the catch is engaged with one of the movable body and the fixed body can be extended out of the through-hole, and is required in the circumferential direction of the through-hole in the extended state. A rotating shaft that can be turned around is provided,
When the required angle is turned around the extended end of the rotation shaft, the catch lever can be brought into contact with the catch lever from the outside, and a lock having a diameter larger than the shorter diameter and smaller than the longer diameter makes it impossible to release the engagement. The structure described above, wherein a portion is provided. 2. The structure according to claim 1, wherein said locking portion has a shape similar to said through hole. 3. The structure according to claim 1, wherein said rotating shaft is a cylinder of a cylinder lock.