JPH0512569U - Lock plate mounting structure for locks - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if the door in which the lock is installed is opened in the opposite direction, it can be dealt with without using a cam plate, and the attachment parts and attachment man-hours of the latch plate can be reduced. To provide a mounting structure for a latch plate. A latch plate 34, which rotates between a locking position and an unlocking position as the rotation shaft 19 rotates, is attached and fixed to a rotation shaft 19 protruding from the back surface of the lock body 12. It On the back surface of the lock body 12, there is formed a restriction projection 18 for limiting the rotation range of the latch plate 34 between the locked position and the unlocked position to approximately 90 degrees. In order to limit the rotation range of the latch plate 34 by penetrating the front and back sides of the latch plate 34 itself in a fan shape centering on the rotation shaft 19 and contacting the regulation projections 18 to both ends of the inner peripheral surface. A restriction recess 36 is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a lock for a flat plate handle or a lock such as a cylinder lock arranged on a door, which is a latch plate that is locked to a metal fitting arranged around the door so that the door does not open. Regarding the mounting structure for the main body.

[0002]

[Prior Art]

 Conventionally, in this type of latch plate mounting structure, a rotating shaft that rotates for locking and unlocking protrudes from the rear surface of the lock body, and the locking position and the unlocking position are relative to the protruding part of this rotating shaft. The latch plate is attached and fixed so that its rotation is restricted within a range of about 90 degrees with respect to the position.

More specifically, for example, in an axial pin tumbler lock (see Japanese Utility Model Publication No. 2-03762), as shown in FIGS. A male screw 6 is threaded around the projection 5 of the moving shaft 4, and the cross section (transverse cross section) of the projection 5 is a non-circular, substantially oval shape. Then, the cam plate 8 having the through hole 8a corresponding to the cross-sectional shape of the protruding portion 5 is fitted into the protruding portion 5 of the rotating shaft 4, and the sectional shape of the protruding portion 5 is covered so as to cover the cam plate 8. When the latch plate 7 having the through hole 7a corresponding to the above is fitted, and further, the nut 10 is screwed from the tip side of the protruding portion 5 through the washer 9, the latch plate 7 and the cam plate 8 are rotated. It will be fixedly attached to the protrusion 5 of the moving shaft 4.

A restricting recess 8b is formed in the cam plate 8 by cutting out a part of the outer peripheral edge of the through hole 8a within a range of about 90 degrees. The restricting recess 8b has a restricting recess 8b. The restriction protrusion 3 protruding at the upper part of the back surface of the is inserted.

In this lock 1, when a key is inserted into the lock body 2 and rotated in a predetermined direction, the latch plate 7 together with the rotating shaft 4 and the edge of the regulation recess 8 b of the cam plate 8 have the regulation projection of the lock body 2. Since it can rotate within the range where it abuts 3, the door in which the lock 1 is arranged can be opened and closed.

The cam plate 8 is arranged such that the latch plate 7 and the cam plate 8 are displaced by 180 degrees about the rotary shaft 4 and are turned upside down and fixed to the protruding portion 5 of the rotary shaft 4 to lock the lock 1. It is provided in order to be able to handle the case where the installed door is opened in the opposite direction (door opened from the left side or door opened from the right side).

[0007]

[Problems to be solved by the device]

 However, in the conventional mounting structure of the latch plate 7 of the lock 1, not only the latch plate 7 but also the cam plate 8 is rotated so as to cope with the case where the door in which the lock 1 is installed is opened in the opposite direction. Since it has to be attached to the protruding portion 5 of the shaft 4, the number of attachment parts and the attachment man-hours of the latch plate 7 increase.

The present invention solves the above-mentioned problems, and can cope with the fact that the door in which the lock is arranged is opened in the opposite direction without using the cam plate, and the attachment parts of the latch plate and It is an object of the present invention to provide a latch plate mounting structure that can reduce the number of mounting steps.

[0009]

[Means for Solving the Problems]

 In the mounting structure according to the present invention, a latch plate that rotates between a locking position and an unlocking position is attached to a rotation shaft that protrudes from the back surface of the lock body as the rotation shaft rotates. A latch plate mounting structure for a lock, which is fixed and has a restricting protrusion formed on the back surface of the lock body to limit the rotation range of the latch plate between the locked position and the unlocked position to about 90 degrees. That is, the front and back of the latch plate as a fan centered on the rotation axis are penetrated through the latch plate itself, and the regulation projections are brought into contact with both ends of the inner peripheral surface to limit the rotation range of the latch plate. Therefore, it is characterized in that a restriction recess is formed.

[0010]

[Operation and effect of the device]

 In the mounting structure according to the present invention, the latch plate itself is provided with the regulation recess for engaging with the regulation projection protruding from the back surface of the lock body. The lock can be assembled simply by mounting and fixing the plate, and it is not necessary to use a separate cam plate as in the conventional case.

Therefore, in the attachment structure of the latch plate according to the present invention, even if the opening direction of the door on which the lock is arranged is reversed, it can be dealt with without using the cam plate. The number of steps can be reduced.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

The lock used in the embodiment is a flat handle 11 used as a lock for a switchboard, a locker, etc., as shown in FIGS.

The flat handle 11 is fixedly attached to a lock main body 12 which is screwed and fixed to a storage portion of a door such as a switchboard, and a protruding portion 20 of a rotary shaft 19 which projects from the back surface of the lock main body 12. And a latch plate 34 (see FIGS. 3 and 4). The flat handle 11 is in a locked state when the latch plate 34 is arranged in the horizontal direction and in an unlocked state when the latch plate 34 is arranged in the vertical direction.

As shown in FIGS. 3-5 and 7, the lock main body 12 is configured to include a case 13, a rotating shaft 19, and a handle 28.

The case 13 is formed by forming a box-shaped recess, has a flange portion 14 on the periphery, and has a female screw for fixing the case 13 together with the flat handle 11 to the storage recess L of the door W with a screw 41 on the rear surface. The unit 15 (see FIGS. 3 and 5) is provided. Further, a cylinder lock storage portion 16 (see FIGS. 5 and 6) for storing the cylinder lock 31 is formed on the lower side of the case 13, and an upper portion of the case 13 for protruding the rotation shaft 19 is formed. A storage cylinder portion 17 having a through hole 17a (see FIGS. 3, 5, and 7) is formed.

Further, at the upper peripheral edge of the through hole 17 a on the back side of the storage cylinder portion 17, a regulation projection 18 is provided to be inserted into a regulation recess 36 of the latch plate 34 described later. The restriction projection 18 has an inner peripheral surface on the side of the through hole 17a as an arc surface centered on the through hole 17a (see FIGS. 1 to 4).

The cylinder lock 31 stored in the cylinder lock storage portion 16 of the case 13 is fixed to the storage portion 16 by using a lock pin 33 (see FIG. 5) with respect to the storage portion 16. Further, there is provided an engaging convex portion 32 which rotates so as to engage / disengage with the engaging concave portion 30 of the handle 28 when the key K is inserted into the cylinder lock 31 and turned (FIG. 5).・ See 6).

As shown in FIGS. 3 and 5, the rotating shaft 19 is formed at one end with a protruding portion 20 that protrudes from the through hole 17a of the storage cylinder portion 17 and has a quadrangular prism shape. A holding portion 23 to which a handle 28 is attached using a pin 27 is formed on the other end side. A female screw portion 21 is formed on the protrusion 20 from the end surface side. In addition, a flange portion 22 is formed at an intermediate portion of the rotating shaft 19 so as to contact the peripheral edge of the through hole 17a inside the storage cylinder portion 17 and regulate the protruding length of the protruding portion 20.

A concave groove 22 a is formed on the outer peripheral surface of the flange portion 22, and a seal ring 26, which is in close contact with the inner peripheral surface of the storage cylinder portion 17, is arranged in the concave groove 22 a. A compression coil spring 25, which is regulated by an annular retainer 24, is arranged on the surface of the flange portion 22 on the handle 28 side.

The handle 28 has a base portion connected to the holding portion 23 of the rotating shaft 19 by a pin 27, and the key K is attached to the cylinder lock 31 housed in the housing portion 16 of the case 13 at the tip end side. A circular insertion hole 29 is formed so that it can be inserted. Reference numeral 30 is an engaging concave portion that engages with the engaging convex portion 32 of the cylinder lock 31. Further, on the base side of the handle 28, when the engaging convex portion 32 of the cylinder lock 31 is removed from the engaging concave portion 30 and the handle 28 is turned to the front side of the door W around the pin 27, the retainer 24 is retained. An inclined surface 28a is formed so as to be in contact with and maintain its position by the biasing force of the compression coil spring 25 (see FIGS. 5 and 6).

As shown in FIGS. 3 to 7, the latch plate 34 is provided with a rectangular through hole 35 on the base side corresponding to the outer shape of the protruding portion 20 of the rotating shaft 19, and the through hole 35 is centered. Is formed as a fan-shaped restriction recess 36 penetrating the front and back. The restriction recess 36 is arranged at a position where the restriction projection 18 can be inserted when the fixing screw 39 is screwed into the female screw portion 21 of the protruding portion 20 and the latch plate 34 is attached and fixed to the protruding portion 20. The size is such that when the regulation projections 18 are brought into contact with both ends of the inner peripheral surface, the space excluding the regulation projections 18 is opened within a range of about 90 degrees around the protrusion 20. is doing.

Reference numeral 38 is a retaining ring, and 40 is a washer. Further, 37 is a mounting hole for mounting the locking rod R on the base side of the latch plate 34.

The case where the flat handle 11 of the embodiment is attached to the door W (R) of the type in which the right side of the door W is opened will be described. First, the case 13 is housed in the door W (R) using the screw 41. Fix the recess L. It should be noted that the cylinder lock 31 is attached to the case 13 in advance using the locking pin 33 in the cylinder lock storage portion 16.

After that, with the seal ring 26, the coil spring 25, and the retainer 24 attached to the rotating shaft 19, the assembly in which the handle 28 is assembled using the pin 27 is attached to the rotating shaft 19. The protrusion 20 of 19 is arranged in the case 13 so as to protrude from the through hole 17a.

Then, while inserting the restriction protrusion 18 into the restriction recess 36, the through hole 35 is fitted into the projection 20 of the rotary shaft 19 projecting from the rear surface of the case 13, and the retaining ring 38 and the washer 40 are inserted. The latch plate 34 can be attached and fixed by screwing the fixing screw 39 to the female screw portion 21 of the protruding portion 20 with the interposition of and. When the latch plate 34 is attached and fixed to the protruding portion 20, the latch plate 34 is attached at the unlocked position in the vertical direction. In that case, the state shown by the chain double-dashed line in FIG. Become.

Thereafter, the door W (R) is closed, and the handle 28 is rotated clockwise from the state shown by the chain double-dashed line in FIG. 1 to dispose the latch plate 34 at the position shown by the solid line in FIG. For example, it can be locked, and the handle 28 is rotated from the state shown in FIG. 6 to the state shown in FIG. 5 around the holding portion 23 of the rotary shaft 19 and stored in the case 13, and the cylinder lock 31 and the key K. The door W (R) can be locked by inserting and turning to engage the engaging convex portion 32 with the engaging concave portion 30 of the handle 28. Note that M is a metal fitting to which the latch plate 34 is locked.

In this state, when unlocking, the key K is inserted and rotated to disengage the engaging convex portion 32 from the engaging concave portion 30 of the handle 28, and the handle 28 is raised to center the rotary shaft 19 as shown in FIG. As shown in FIG. 1, when viewed from the back side of the flat handle 11, the handle 28 is turned counterclockwise by approximately 90 degrees, and the regulation projection 18 is brought into contact with the end of the regulation recess 36 opposite to the inner peripheral surface. Since the latch plate 34 can be arranged at the unlocking position, the handle 28 can be pulled to open the door W (R).

When the flat handle 11 is attached to the door W (L) of the type in which the left side of the door W is opened, when the latch plate 34 is attached and fixed to the protruding portion 20 of the rotating shaft 19, The latch plate 34 may be attached in an inverted state (see FIGS. 2 and 4).

In this state, when unlocking, the key K is inserted and turned to disengage the engaging convex portion 32 from the engaging concave portion 30 of the handle 28, and the handle 28 is raised to center the rotary shaft 19 on the drawing. As shown in FIG. 2, when viewed from the back side of the flat handle 11, the handle 28 is rotated approximately 90 degrees in the clock direction, and the regulation projection 18 is brought into contact with the end of the regulation recess 36 opposite to the inner peripheral surface. Since the latch plate 34 can be arranged at the unlocked position (the state shown by the chain double-dashed line in FIG. 2), the handle W can be pulled to open the door W (L).

In the flat handle 11 of this embodiment, the latch plate 34 itself is provided with the restriction recess 36 for engaging with the restriction projection 18 protruding from the rear surface of the lock body 12. The lock (flat handle) 11 can be assembled simply by attaching and fixing the latch plate 34 to the rotary shaft 19, and it is not necessary to use a separate cam plate as in the conventional case. The same effect as described in the operation and effect of the device is obtained.

In the embodiment, the case where the retaining ring 38 is used in addition to the washer 40 for tightening the fixing screw 39 is shown. However, if the outer diameter of the washer 40 is larger than the through hole 35 of the latch plate 34, The retaining ring 38 can be eliminated.

Further, in the embodiment, the case where the regulating recess 36 of the latch plate 34 is formed by a hole is shown. However, when the mounting hole 37 is unnecessary, the outer shape of the latch plate 34 on the base side is made small. Thus, the regulation recess 36 may not be a hole, but may be in a state where the peripheral edge is opened like the regulation recess 8b of the conventional cam plate 8.

Further, in the embodiment, the restriction projection 18 is arranged above the through hole 17 a on the back side of the case 13, and the restriction recess 36 is opposite to the tip side of the latch plate 34 on the base side of the latch plate 34. Although the case where it is arranged on the side is shown, of course, the regulating projection 18 is arranged below the through hole 17a on the back side of the case 13, and the regulating concave portion 36 is on the tip side of the latch plate 34 on the base side of the latch plate 34. The arrangement of the restriction protrusion 18 and the restriction recess 36 can be selected as appropriate, for example, by arranging the restriction projection 18 and

Furthermore, in the embodiment, the case where the latch plate 34 is attached and fixed to the protruding portion 20 of the rotating shaft 19 by using the fixing screw 39 is shown. However, the male screw is attached to the protruding portion 20 of the rotating shaft 19. If provided, the latch plate 34 may be configured to be attached and fixed to the projecting portion using a nut.

[Brief description of drawings]

FIG. 1 is a rear view showing a state where a flat handle of an embodiment is attached to a door.

FIG. 2 is a rear view showing a state where the flat handle of the embodiment is attached to a door whose opening is reversed.

3 is an exploded perspective view of the flat handle in the state shown in FIG. 1. FIG.

FIG. 4 is an exploded perspective view of the flat handle in the state shown in FIG.

FIG. 5 is a vertical sectional view of the flat handle of the embodiment.

FIG. 6 is a longitudinal sectional view showing a state in which the handle of the flat handle of the embodiment is raised.

7 is a cross-sectional view of the flat handle of the embodiment, showing a VII-VII portion of FIG.

FIG. 8 is a cross-sectional view of a conventional lock.

FIG. 9 is an exploded perspective view of a conventional lock.

[Explanation of symbols]

 1.11 ... Lock (11 ... Flat handle), 2.12 ... Lock body, 3.18 ... Regulating projection, 4.19 ... Rotating shaft, 5.20 ... Projection part, 7.34 ... Latch plate, 8b. 36 ... Regulating recess.

Claims (1)

[Scope of utility model registration request] 1. A latch plate is attached and fixed to a rotary shaft protruding from the back surface of the lock body, the latch plate rotating between a locking position and an unlocking position as the rotary shaft rotates. A latch plate mounting structure for a lock, wherein a locking protrusion is formed on the back surface of the lock body to limit the range of rotation of the latch plate between the locked position and the unlocked position to approximately 90 degrees. A regulation for limiting the rotation range of the latch plate by penetrating the front and back of the latch plate itself in a fan shape centering around the rotation axis and bringing the regulation projections into contact with both ends of the inner peripheral surface. A latch plate mounting structure for a lock, characterized in that a recess is formed.