JP7681387B2 - Locking devices and fixtures - Google Patents

Description

This disclosure relates to locking devices and fixtures.

Conventionally, fittings such as windows and doors are equipped with locking devices that can lock and unlock the fittings by rotating a handle via a base fixed to the fittings. Locking devices such as crescent locks and cam latch handles generally have a base fixed to the fittings with screws or the like (see, for example, Patent Document 1). The locking device described in Patent Document 1 has two screw covers that cover the screw parts in addition to the base body to prevent the screws from being exposed and improve the design.

Crescent locks have an operating handle and place a relatively large load on the base when opening and closing, so the base body is required to have high strength. The screw cover is not required to be as strong as it is not likely to bear a direct load, but it is preferable for it to be water resistant to prevent deformation due to moisture such as dew. For this reason, different materials are sometimes used for the base body and the screw cover, which require strength.

Japanese Patent Application Publication No. 8-28114

In the crescent lock described in Patent Document 1, the seam between the base body and the screw cover is visible from the front. In addition, if different materials are used for the base body and the screw cover, when the materials discolor over time, the difference in color becomes noticeable, which can impair the design.

The present disclosure provides a locking device having a base fixed to a fixture, an operating unit rotatably attached to the base and capable of locking and unlocking the fixture by a rotational operation, and a base cover that covers the entire base, the base cover being made of two cover members that are slidably attached to the base, and the cover members are configured to be switchable between a closed state that covers the entire base and an open state that exposes the base by the sliding movement.

FIG. 13 shows a locking device attached to a fixture. FIG. FIG. FIG. FIG. 13 is a diagram showing the base before the cover member is attached. FIG. 4 is a view showing the locking device with the cover member in an open state.

First Embodiment
As shown in Fig. 1, the locking device 2 of this embodiment is attached to the joint frame of two shoji screens 11 and 12 that constitute a fitting 1 such as a window or a door, and is configured to be able to lock and unlock the fitting. As shown in Fig. 2, the locking device 2 has an operation unit 3 for locking and unlocking the fitting 1 by a rotation operation, a base cover 4 that covers the entire base 5, a base 5 that is fixed to the fitting 1, a connecting unit 6 that connects the base 5 and the operation unit 3, and a crescent receiver 7 for locking and unlocking the fitting 1 together with the operation unit 3. In Fig. 1, the operation unit 3, base cover 4, and base 5 of the locking device 2 are fixed to the side of the joint frame of one shoji screen 11, and the crescent receiver 7 is fixed to the front of the joint frame of the other shoji screen 12. In Figs. 1 and 2, the base 5 is covered by the operation unit 3 and the base cover 4 and is not exposed.

The operating unit 3 has an operating handle 31, a crescent 33 that engages with the crescent receiver 7 to lock the fixture 1, and a sub-lock 34 and locking mechanism 35 that prohibit rotation of the operating handle 31 and the crescent 33. The operating unit 3 can be rotated 180° clockwise from the state shown in FIG. 1 around a rotating shaft 61 (described below). The operating unit 3 is preferably strong because it is repeatedly loaded with loads associated with the locking/unlocking and opening/closing of the fixture 1. The operating unit 3 is preferably made of nylon containing glass fiber or metal parts, for example.

The crescent 33 has an arc-shaped shape as shown in Figure 2. The crescent receiver 7 is attached to the front side of the shoji screen 12 and has an engagement portion that engages with the crescent 33. In this embodiment, the fixture 1 is a sliding shoji screen. With the shoji screen closed, the operating unit 3 is rotated to the angle shown in Figure 1, causing the crescent 33 to engage with the crescent receiver 7 and restraining the fixture 1 from moving left or right, and locking the shoji screen so that it cannot be opened.

In the locking device 2 of this embodiment, the base cover 4 is composed of two cover members 40. There are no particular limitations on the material that composes the cover members 40. The cover members 40 can be composed of, for example, resin, and are preferably water-resistant since they are expected to come into contact with water droplets generated by condensation. As shown in Figures 3A and 3B, the two cover members 40 have a shape that constitutes the four sides of an approximately rectangular parallelepiped with a top surface portion 41, a side surface portion 42, and an end surface portion 43, and can accommodate and cover approximately half of the base 5 inside. As shown in Figures 1 and 2, the two cover members 40 are butted together and are configured to cover half of the approximately rectangular base 5 each.

That is, the two cover members 40 are configured to cover the entire base 5, one of which is fixed to the shoji screen 11, with five faces of the approximately rectangular parallelepiped together. As a result, the base 5 is not visible to the user when viewed from the front or side of the locking device 2 , as shown in Fig. 2, and only the cover members 40 are exposed. Therefore, even if the cover members 40 discolor due to aging, there will be no difference in color between them and the base 5, improving the design of the locking device 2.

In this embodiment, the cover member 40 covering the entire base 5 only needs to cover the base 5 to an extent that the base 5 is not visible in the front and side views of the locking device 2. The side view of the locking device 2 means that the locking device 2 is viewed from the direction in which the sub-lock 34 is located in Fig. 1. The front view of the locking device 2 means that the locking device 2 is viewed from the direction in which the operating handle 31 is located in Fig. 1.

In this embodiment, the two cover members 40 are butted against each other at the center of the base, and have a seam. The seam is hidden by the operating unit 3 and is not exposed when viewed from the front or side of the locking device 2. That is, when viewed from the side of the locking device 2 , the seam between the two cover members 40 is hidden by the sublock 34 and is not visible, and when viewed from the front of the locking device 2 , the seam between the two cover members 40 is hidden by the operating handle 31, the crescent 33, etc. This improves the design of the locking device 2.

The two cover members 40 do not necessarily have to be directly butted against each other. Even if there is a gap between the two cover members 40 and part of the base 5 is exposed, if the base 5 is hidden by the sublock 34 when viewed from the side of the locking device 2 and by the operating handle 31, the crescent 33, or the like when viewed from the front, part of the base 5 will not be visible.

Furthermore, a part of the base 5 may be exposed on the surface of the locking device 2 facing the shoji screen 12. This is because the part of the base 5 exposed on the back surface of the fitting 1 cannot be seen.

The two cover members 40 may be made of the same material and color as the operating unit 3. This is to unify the appearance and improve the design. Furthermore, the crescent 33 and the sub-block 34 may also be made of the same color.

The cover member 40 further has a protruding engagement portion 44 formed on the surface of the side surface portion 42 that covers the base 5, and a protruding fitting portion 45 formed on the surface of the end surface portion 43 that covers the base 5. The engagement portion 44 is assembled so as to engage with the groove portion 52 of the base 5, as shown in Figures 4 and 5.

The cover member 40 can be opened and closed by sliding along the groove portion 52. That is, when the cover member 40 is slid open and closed, the engagement portion 44 engages with the end side engagement portion 53 and the center side engagement portion 54 of the base 5, thereby holding the cover member 40 in an open state and a closed state. The open state is a state in which the base 5 is exposed as shown in FIG. 5, and the closed state is a state in which the entire base 5 is covered as shown in FIG. 2. The engagement portion 45 of the cover member 40 engages with the recessed portion 55 of the base 5 in the closed state, preventing deformation of the base 5.

The cover member 40 has a recess 46 into which the rotating shaft portion 61 of the connecting portion 6 is inserted when the cover member 40 is attached to the base 5 and closed. This allows the base 5 to be covered up to the side where the rotating shaft portion 61 is located, improving the design of the locking device 2.

The base 5 is composed of a metal back plate member that is fixed to the fixture 1 with screws. The base 5 is fixed to the fixture 1 by fastening it with screws through holes 51. The base 5 further has a groove 52 for assembling the cover member 40, and an end side engagement portion 53 and a center side engagement portion 54 are formed in the groove 52.

The base 5 further has a connecting portion 6 between the two holes 51 that connects the base 5 and the operating portion 3. The connecting portion 6 is composed of a rotating shaft portion 61, a support portion 62 that is crimped and fixed to the base 5 and supports the rotating shaft portion 61, a handle attachment portion 63 to which the operating handle 31 is attached, and a stopper 64 (not shown) that is disposed on the back surface of the base 5 and limits the rotation angle of the operating handle 31.

That is, the roughly rectangular handle attachment portion 63 engages with the operating handle 31, so that the rotation of the operating handle 31 can be transmitted to the rotating shaft portion 61. Similarly, the other end of the rotating shaft portion 61 engages with, for example, a roughly rectangular stopper 64, and the stopper 64 rotates in response to the rotation of the rotating shaft portion 61. When a part of the rotated stopper 64 collides with the base 5, further rotation is restricted, and the rotation range of the operating handle 31 is restricted.

The locking mechanism 35 acts via the sublock 34 to restrict the rotation of the approximately rectangular handle attachment portion 63 shown in FIG. 4. This locks the rotation of the operating handle 31, preventing small children or the like from rotating the operating handle 31 to lock or unlock the fixture 1.

The above describes the locking device 2 of this embodiment. The locking device 2 provides the following advantages:

The locking device 2 of this embodiment has a base 5 fixed to the fixture 1, an operating unit 23 rotatably attached to the base 5 and capable of locking and unlocking the fixture 1 by a rotational operation, and a base cover 4 that covers the entire base 5. The base cover 4 is made up of two cover members 40 that are slidably attached to the base 5, and the cover members 40 are configured to be switchable between a closed state that covers the entire base 5 and an open state that exposes the base 5 by sliding movement. As a result, the base 5 is not visible to the user, and only the cover members 40 are visible, improving the design.

The two cover members 40 have a joint where they butt against each other in the closed state, and the joint is disposed at a position that is shielded by the operating unit 3 in a side view of the locking device 2. This makes the joint between the two cover members 40 invisible in a side view of the locking device 2 , further improving the design.

The joint is further disposed at a position that is shielded by the operating unit 3 even when viewed from the front of the locking device 2. This makes it possible to prevent the joint between the two cover members 40 from being visible even when viewed from the front of the locking device 2 , thereby further improving the design.

The fixture 1 is equipped with a locking device 2. This improves the overall design of the fixture 1.

The locking device of this embodiment is not limited to the above-mentioned aspects. For example, it may be applied to a cremone lock or a cam latch handle, rather than a crescent lock as in the above-mentioned embodiment. The locking device of this disclosure can also be applied to various fixtures, such as back door doors and terrace doors.

1... fitting, 2... locking device, 3... operation part, 31... operation handle, 33... crescent, 34... sub-lock, 35... locking mechanism, 4... base cover, 40... cover member, 41... upper surface part, 42... side surface part, 43... end surface part, 44... engagement part, 45... fitting part, 5... base, 51... hole part, 52... groove part, 53... end side engagement part, 54... center side engagement part, 55... recess, 6... connection part, 61... rotating shaft part, 62... support part, 63... handle attachment part, 64... stopper, 7... crescent receiver

Claims (6)

A base that is fixed to the building material;
An operation unit that is rotatably attached to the base and can lock and unlock the fixture by a rotation operation;
A locking device having a base cover that covers the base,
The base cover is made up of two cover members , one at one end and the other at the other end , and the joint where the two cover members are butted together or the gap between the two cover members is shielded from the operating unit. The locking device according to claim 1 , wherein the joint or the gap is provided on a base center side of the cover member on the one end side and a base center side of the cover member on the other end side. The locking device according to claim 2 , wherein the seam or the gap is covered by a single part in a side view of the locking device. A fixture equipped with a locking device according to any one of claims 1 to 3. A base that is fixed to the building material;
An operation unit that is rotatably attached to the base and can lock and unlock the fixture by a rotation operation;
A locking device having a base cover that covers the base,
The base cover has two cover members,
The two cover members are attached to the base so as to be slidable thereon,
The two cover members are configured to be switchable between a closed state in which the cover covers the base and an open state in which the cover exposes the base by the sliding movement,
The two cover members have joints that butt against each other in a closed state,
A locking device, wherein the seam is positioned at a position that is hidden by the operating unit when viewed from the front or side of the locking device. A fixture equipped with the locking device described in claim 5.

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