JP3154670B2 - Locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a locking device used for a door or the like.

[0002]

2. Description of the Related Art Conventionally, a frame member fixed to a door or the like and a shaft member rotatably inserted into an insertion hole formed in this member, and one end of the shaft member looking into the door are claw. Locking devices that are formed so that metal fittings can be attached thereto and are configured so that an end opposite to the one end looks outside the door are well known. The shaft member is rotated, for example, by operating a handle attached to the opposite end, and the claw fitting is disengaged from the fixed frame to which the door is attached with the rotation. By the disengagement,
The door is locked or unlocked. The axial member is prevented from moving in the axial direction by a retaining ring such as a C-shaped retaining ring so that the shaft member does not come out of the insertion hole of the frame member.

[0003]

In the process of assembling the conventional locking device, the retaining ring used in the device must be securely fitted in a predetermined groove formed in a shaft insertion hole or the like. However, when the locking device is downsized, both the retaining ring and the groove become small, and the work of fitting the retaining ring becomes difficult. Therefore, in the process of assembling such a locking device,
It is desirable to be able to easily confirm that the retaining ring is completely fitted in the groove.

Accordingly, an object of the present invention is to make it possible to easily confirm that the retaining ring is completely fitted in a locking device using the retaining ring in a process of assembling the device.

[0005]

In order to solve the above problem, the present invention is based on the premise that a frame member fixed to a door or the like and a rotatable insertion hole are inserted into an insertion hole formed in the member. The locking device has a shaft member formed on one side of the shaft member, the one end of the shaft member being viewed inside the door so that a claw fitting can be attached thereto, and the opposite end of the one end portion looking out of the door.

On this premise, the present invention is characterized in that the shaft member has a large-diameter portion in sliding contact with the inner wall of the insertion hole and a small-diameter portion extending from the inner end of the large-diameter portion to the inside of the door. The small-diameter portion has a larger inner diameter than the small-diameter portion and is inserted through a retaining ring that engages with the inner wall of the insertion hole, and the retaining ring contacts the inner end of the large-diameter portion of the shaft member from inside the door. Contacting the shaft member to prevent the shaft member from being pulled out toward the inside of the door, and a spacer member is inserted into the gap between the small diameter portion of the shaft member and the retaining ring from inside the door.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of a locking device according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view of the locking device 1 in a used state. The locking device 1 is attached to a door 2 shown in a cutaway view, and the door 2 is attached to a fixed frame 3 so as to be openable and closable, and is in a locked state. When the handle 4 inserted into the locking device 1 from the outside of the door 2 rotates clockwise, the claw fitting 6 rotates clockwise inside the door 2 to disengage from the fixed frame 3 engaged therewith. The door 2 is unlocked.

FIG. 2 is a view taken along the line II-II in FIG. The locking device 1 has a frame member 11 and a rotating member 12. The frame member 11 includes a large-diameter portion 13 that comes into contact with the outside of the door 2 via the rubber packing 5, and a small-diameter portion 16 that is inserted through the through hole 14 of the door 2 and is inside the door 2. Insertion part 17 and insertion part 1 having circular cross section into which moving member 12 is inserted
Handle insertion hole 18 leading to 7 (see also FIG. 1)
And The nut 1 is inserted into the small diameter portion 16 from the inside of the door 2.
The frame member 11 is fixed to the door 2 by screwing the nut 9 and the large diameter portion 13 to press the door 2 from inside and outside. A packing 21 is interposed between the nut 19 and the door 2.

The rotating member 12 has one end 22 near the handle insertion hole 18 and the inner end surface 1 of the large diameter portion 13 of the frame member 11.
3A, and its opposite end 23 is separated from the frame member 11 by the door 2.
Extends inward. The rotating member 12 is interposed between the first and second large-diameter portions 26 and 27 whose axial direction is in sliding contact with the peripheral wall 17A of the insertion portion 17, and is interposed between the first and second large-diameter portions 26 and 27. A first small-diameter portion that is separated from a second small-diameter portion that extends from the second large-diameter portion to the inside of the door 2;
And a screw portion 31 extending further inward from the second small diameter portion 29. The first large diameter portion 26 has an end surface 32 that abuts on the inner end surface 13A of the large diameter portion 13 of the frame member,
A handle guide projection 34 that fits into a recess 33 at the tip of the handle 4 (see FIG. 1), and an engagement wall that allows a pair of wings 36 at the tip of the handle 4 to abut from the surrounding direction when the handle 4 rotates. 37. An O-ring 38 that prevents water from entering the locking device 1 is located between the first and second large diameter portions 26 and 27. A C-shaped retaining ring 41 is in contact with the second large diameter portion 27 from inside the door 2.

The retaining ring 41 is fitted in a circumferential groove 42 formed in the peripheral wall 17A of the insertion portion 17, and prevents the rotating member 12 from being pulled out inward of the door 2. A gap 43 is formed between the inner peripheral surface of the retaining ring 41 and the peripheral surface of the second small diameter portion 29. A spacer ring 44 is fitted into the second small diameter portion 29 from the inside of the door 2, and a front end portion 44 </ b> A of the ring 44 is fitted.
Are fitted into the gap 43, and the rear end portion 44B is located between the peripheral surface of the second small diameter portion 29 and the inner peripheral surface 17A of the insertion portion 17. The radial dimension of the front end portion 44A is slightly smaller than the gap 43, and when the retaining ring 41 is not completely fitted in the groove 42 of the insertion portion 17, the ring 44 abuts against the retaining ring 41, and after the ring, The end portion 44B projects from the inner end 46 of the insertion portion 17 to the inside of the door 2. In other words, the ring 44 in such a state indicates that the fitting of the retaining ring 41 is incomplete, and there is a risk that the rotating member 12 may come off inside the door 2.

The second small diameter portion 29 of the rotating member 12 is inserted into the insertion portion 1.
The portion 47 extending from the inner end 46 of the rim 7 has a square cross section in the radial direction, and a plate 48 for regulating the rotation angle of the rotation member 12 and the claw fitting 6 are formed here. The members 12 and the plate 48 are fitted in the square holes 48A and 6A.
And the claw fitting 6 are integrally rotated in the same direction. Board 4
8 has a radially protruding portion (not shown) on a part of the outer periphery, and the protruding portion is formed on the rear end 46 of the frame member small diameter portion 16 with a small projection (shown in the drawing) inward of the door 2. The contact angle of the turning member 12 can be restricted by contacting the turning member 12 from the surrounding direction. From the extension 47, the door 2
A screw portion 51 extends inward of the nut, and a nut 53 is screwed to the portion 51 together with a washer 52. Nut 53
Presses the claw fitting 6 against the inner end 46 of the frame member 11.

In the present invention, what fits in the gap 43 is not limited to a ring-shaped one such as the spacer ring 44. It is possible to use an appropriately shaped spacer that fits into a part of the gap 43.

[0014]

In the locking device according to the present invention, the spacer ring is fitted between the rotating member and the retaining ring for the member. If the mounting of the retaining ring is incomplete, the spacer ring does not fit, and a portion of the retaining ring projects from the inner end of the frame member toward the inside of the door, so that the mounting is incomplete. This can be easily confirmed in the assembly process of the device.

[Brief description of the drawings]

FIG. 1 is a perspective view of a locking device in use.

FIG. 2 is an end view taken along line II-II of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking device 2 Door 3 Fixed frame 4 Handle 6 Claw fitting 11 Frame member 12 Rotating member 41 Retaining ring 44 Spacer member

Claims (2)

(57) [Claims] 1. A frame member fixed to a door or the like, and a shaft member rotatably inserted into an insertion hole formed in the member, and one end of the shaft member looking into the inside of the door is a claw. A locking device formed so that a metal fitting can be attached thereto, and an end opposite to the one end is viewed outside the door, wherein the shaft member is in sliding contact with the inner wall of the insertion hole, and an inner end of the large diameter portion A small-diameter portion extending inward from the door, the small-diameter portion having a larger inner diameter than the small-diameter portion is inserted into a retaining ring that engages with the inner wall of the insertion hole, and the retaining ring is inserted inside the door. Abutting against the inner end of the large diameter portion of the shaft member to prevent the shaft member from being pulled out toward the inside of the door, and a spacer member is provided in the gap between the small diameter portion of the shaft member and the retaining ring inside the door. The locking device described above, wherein the locking device is fitted. 2. The locking device according to claim 1, wherein the spacer member is annular.