JPH0714037U - Door lock adapter - Google Patents

Abstract

(57) [Summary] [Purpose] The adapter for changing the size of the square hole
It can be installed easily and does not come off easily after installation. [Structure] Adapter 6 mounted in square hole 5 of hub 4
Consists of two identical top pieces 7 having a substantially U-shaped cross section. The top piece 7 has side plates 9 and 10 standing upright from both sides of the base plate 8. The projecting trapezoidal engaging convex portion 11 is provided, a flat portion is provided at both ends thereof, and the inclined portions 13 are provided, and the other side plate 10 is provided.
Is provided with an inverted trapezoidal engagement concave portion 12 which coincides with the engagement convex portion 11 in the center, and a small flat portion is provided at both ends thereof to provide inclined portions 13 and 13. At both ends of the substrate, there are provided outwardly projecting claw portions 15 and 15, and cut portions 16 ... 16 are provided on both sides, respectively, to provide elastically deformable spring portions 14 and 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The size of the square core used for the lever handle and knob attached to the door varies depending on the manufacturer, and there are various sizes such as 7 mm square, 7.5 mm square, 8 mm square, 8.5 mm square. The present invention relates to a door lock adapter that is attached to a square hole of a door lock so that it can accommodate square cores of different sizes.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as in Japanese Utility Model Laid-Open No. 2-91859, there has been proposed a device in which an adapter member having a rectangular tubular shape is inserted into a square hole so as to be able to cope with various dimensions of a square core.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional example, the adapter member is only frictionally mounted in the square hole, and there is a problem that the adapter member falls off when the square core is not inserted or when the square core is inserted. .

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an adapter for a door lock mounted in a square hole of a hub that is rotatably attached to a door lock, in which the adapter assembles two pieces of the same shape facing each other. As a result, the coma component has a substantially square cross section, and the side plate is formed on both sides of the board so that it has a substantially U-shaped cross section. Is provided with a notch, an engaging recess is provided at the center of the other side plate, notches are provided at both ends of the side plate, and two cuts are provided at both ends of the board to enable elastic deformation. A spring portion is formed, and a claw portion protruding outward is provided at the tip of the spring portion.

[0005]

[Operation] To mount the adapter in the square hole, one engaging convex part is opposed to the other engaging concave part, and the respective notches are brought into contact with each other to insert one end into the rectangular hole. , When the other end is pushed in, the boards become parallel, the opposing claws at one end contact the inner wall of the square hole, the spring part deforms inward, and when it is further pushed in, the deformed claw part becomes square. It goes out of the hole, is restored by its elastic force and engages with the outer edge of the square hole, and the claw portion at the other end is also engaged with the outer edge of the square hole to be mounted.

[0006]

【Example】

 In the door lock 1, a lock piece 3 and a hub 4 are attached to a lock box 2, and the hub 4 is rotated by a square core attached to a lever handle or the like to retract the lock piece 3. A square hole 5 is provided at the center of rotation of the hub 4, and a square core is inserted therein.

The adapter 6 mounted in the square hole 5 is made up of two identical piece parts 7 having a substantially U-shaped cross section, and the piece parts 7 are provided with side plates 9 and 10 standing from both sides of the board 8. The one side plate 9 is provided with a trapezoidal engaging convex portion 11 protruding upward in the center, and a flat portion is provided at both end portions thereof to provide notches 13 and 13, and the other side plate 10 is provided. In this case, an inverted trapezoidal engagement concave portion 12 that coincides with the engagement convex portion 11 is provided at the center, and a flat portion is provided at both ends thereof to form notched portions 13 and 13. At both ends of the substrate, there are provided outwardly projecting claw portions 15 and 15, and elastically deformable spring portions 14 are provided by providing cut portions 16 ... 16 On both sides. The inclined portion 13 may be cut out in an arc shape.

In order to mount the adapter 6 in the square hole 5, first, as shown in FIG. 5A, two piece parts are made so that one engaging convex portion 11 faces the other engaging concave portion 12. 13 are combined, and the respective cutouts 13 ... 13 are brought into contact with each other to close one end and insert into the square hole 5. In this state, the top parts 7 are not deformed at all. Next, as shown in FIG. 7B, when the other end is pushed in, the substrates 8 and 8 become parallel, and the claws 15 and 15 facing each other at one end come into contact with the inner wall of the square hole 5 and the spring 14 is pressed.・ 14 deforms inward. In this state, the engagement protrusions 11 and 11 are engaged with each other, so that the two top parts 7 and 7 can be inserted without being displaced. When it is pushed further, the deformed claws 15 and 15 come out of the square hole 5 and are restored by its elastic force to engage with the outer edge of the square hole 5, and the claws 15 and 15 at the other end are also changed to the square hole 5. It is mounted by engaging with the outer edge of, and the state shown in FIG. In this state, even if there is a play between the adapter 6 and the square hole 5 and one of the top parts 7 is deviated and the claw portion 15 is disengaged, the engaging convex portion 11 Since they are engaged, none of the top parts 7 and 7 will be disengaged.

If a plurality of adapters having different wall thicknesses are prepared, it is possible to deal with square cores of various sizes.

[0010]

[Effect of device]

 As described above, according to the present invention, the effect that the adapter can be easily attached to the square hole and that the adapter does not easily come off when the square core is inserted or during use after being attached. is there.

Also, since the two frame parts that compose the adapter are the same, the production cost can be kept low, and it is not necessary to separate the two parts that also combine the work of mounting in the square hole, so it is easy to do. There is.

[Brief description of drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is a partially cutaway side view.

3 is a partially enlarged cross-sectional view taken along the line AA of FIG.

FIG. 4 is an enlarged perspective view of an adapter.

FIG. 5 is an enlarged sectional view of an essential part for explaining the process of mounting the adapter in the square hole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door lock 3 Lock piece 4 Hub 5 Square hole 6 Adapter 7 Top part 8 Board 9 Side plate 10 Side plate 11 Engagement convex part 12 Engagement concave part 13 Notch part 14 Spring part 15 Claw part 16 Cutting part

Claims (1)

[Scope of utility model registration request] 1. An adapter for a door lock, which is mounted in a square hole of a hub rotatably attached to a door lock, wherein the adapter has a substantially rectangular cross section when two pieces of the same-shaped top parts are assembled facing each other. In the top part, side plates are erected on both sides of the board so as to have a substantially U-shaped cross section, and one side plate is provided with an engaging protrusion at substantially the center thereof, and notches are provided at both ends thereof, and the other side plate is provided. The engaging recess is provided in the center of the board, and the notches are provided at both ends of the board.
An adapter for a door lock, characterized in that each of the two cut portions is provided with an elastically deformable spring portion, and an outwardly projecting claw portion is provided at the tip thereof.