JPH0312129Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a lock that can be locked from indoors, for example, and that is attached to the door of a toilet or bathroom.

[Conventional technology]

For locks used on toilet and bathroom doors that do not have a locking mechanism using a key, push one end of the thumb piece into the engaging part of the locking piece, as disclosed in Japanese Utility Model Application Publication No. 58-47668. and prevents rotation of the lever handle.

[Problem that the invention attempts to solve]

After pushing the other end of the thumb piece to disengage the engaging part of the locking piece from one end of the thumb piece, the lock piece is retracted by rotating the lever handle, and while the door is being opened, If one end of the thumb piece becomes pushed after the door is opened due to catching on clothing, other influences, or mischief by a child, the engaging portion of the locking piece and the thumb piece will automatically engage after the door is closed.

As a result, the rotation of the lever handle is restricted,
There was a problem where the door could not be opened.

Moreover, in order to release the above-mentioned locked state, the rod must be inserted one by one and the shaft member pushed back, which is a time-consuming problem.

[Means for solving problems]

In order to solve the above problems, this idea
A rocking plate is disposed within the pedestal with the front edge of the distal end in contact with one end surface of the thumb piece, and the end of the rocking plate located on the outside of the one end of the thumb piece is rotatably attached to the pedestal, and the rocking plate A protruding piece is provided at the tip of the thumb piece, which abuts the end of the rod that is recessed into the lock piece and pushes back one end of the thumb piece while swinging the rocking plate as the lock piece is retracted.

[Operation] After pushing the other end of the thumb piece to release the engagement between one end of the thumb piece and the engaging portion of the plate-like body, the lock piece is retracted while rotating the operating member to be gripped, and the door is opened. let

When closing the door, if one end of the thumb piece has been pushed, for example due to a child's mischief, the rocking plate is rotated by the contact between the rear surface of one end of the thumb piece and the protrusion, and the end of the rod is closed. The protrusion is in contact with the surface.

When the door is closed in this state, the lock piece is retracted just before the door is closed, so that the protruding piece is pushed by the end face of the rod that is pushed back.

As a result, the protruding piece slides against the distal end surface of the rod and rotates the rocking plate toward the rear surface of the thumb piece, causing the rocking plate to push back one end of the thumb piece and engage the end of the thumb piece with the engaging portion. automatically cancels the connection.

〔Example〕

In the figure, A is an indoor door that swings open and close, and there are operating members 1 such as levers or grips on both the inside and outside of this door A.
A lock piece 2 that can be freely extended and retracted is provided on each end face, and a square shaft 3 that rotates integrally with the operation member 1 is installed between the operation members 1, so that the angle can be maintained even when the operation member 1 is rotated. The lock piece 2 is inserted through the shaft 3.

In the illustrated case, the lock piece 2 is retracted by passing the square shaft 3 through a square hole (not shown) of the rotating body 4, and by providing a collar 6 at the end of the rod 5 having the lock piece 2 at the tip. A projecting piece 7 protruding from the outer peripheral surface of the rotating body 4 is brought into contact with the inner surface of the rod 6, and as the square shaft 3 rotates, the projecting piece 7 is rotated and the spring 8 is compressed while the rod 5 is moved backward. It is adapted to allow the lock piece 2 to be immersed therein.

Further, on the inner surface of the door A, a pedestal 9 that rotatably supports the operating member 1 is provided with a through window 10 that is long in the lateral direction.

Further, a thumb piece 11 is fitted into the through-hole 10, and the center between both ends of the thumb piece 11 is rotatably attached to the base 9 via a pin 12.

Further, the end of the swing plate 13, which runs along the back surface of the thumb piece 11 and has its front end in contact with the back surface of one end of the thumb piece 11, is rotatably attached to the base 9 via a pin 14.

Furthermore, a protrusion 15 is provided at the tip of the swing plate 13, which contacts the outer surface of the collar 6 and pushes back one end of the thumb piece 11 while rotating the swing plate 13 as the lock piece 2 is retracted. There is.

In addition, the square shaft 3 is attached to the thumb piece 11 side of the square shaft 3.
A plate-like body 16 that rotates together with the thumb piece 11 is provided, and the plate-like body 16 is provided with an engaging portion 17 that engages with one end of the thumb piece 11 when the end of the thumb piece 11 is retracted.

The above-mentioned engaging portion 17 is adapted to engage with a protrusion provided on the peripheral edge of the plate-shaped body 16.

In the figure, reference numeral 18 denotes a protrusion provided on the edge of the front end of the swing plate 13, and the protrusion 18 is provided on the back surface of one end of the thumb piece 11.
8 in contact with each other to push back one end of the thumb piece 11, however, the straight edge of the swing plate 13 may be used to push it back. Reference numeral 19 denotes a temporary stop device composed of a claw and a plate to prevent the thumb piece 11 from rotating naturally.

The lock according to this invention has the above configuration,
By pushing one end of the thumb piece 11 after closing the door A, the engaging portion 17 and one end of the thumb piece 11 are engaged, and the plate-shaped body 16 is prevented from rotating.

Therefore, the locked state can be maintained.

Next, to unlock the lock, push the other end of the thumb piece 11 to release the engagement between the engaging portion 17 and one end of the thumb piece 11, and then rotate the square shaft 3 with the operation member 1 to release the lock piece 2. can be immersed.

Further, if one end of the thumb piece 11 is retracted before the door A is closed, the protruding piece 15 is brought into contact with the outer surface of the collar 6 as shown in FIG.

When the door A is closed in this state, the rod 5 is pushed back as the lock piece 2 is retracted, so the protrusion 15 in contact with the collar 6 rotates the rocking plate 13, and the rocking plate 13 rotates the thumb piece. 11 (as shown in Figure 1).

Therefore, one end of the thumb piece 11 and the engaging portion 1
The engagement with 7 is released.

〔effect〕

As mentioned above, according to the lock related to this invention,
When closing the door, even if one end of the thumb piece is in the retracted state, as the lock piece is retracted, the rocking plate is rotated by the protrusion that contacts the flange, and the rocking plate rotates the one end of the thumb piece. Push it back to automatically release the engagement between the thumb piece and the engaging portion.

Therefore, it is possible to eliminate inconveniences such as the door not being able to be opened due to mischief by children or the like.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional plan view of the lock according to this invention, FIG. 2 is a cross-sectional plan view of the lock with one end of the thumb piece retracted, and FIG. 3 is a vertical cross-sectional rear view of the lock. A...Door, 1...Operation member, 2...Lock piece, 3...Square shaft,
4... Rotating body, 5... Rod, 6... Tsuba, 7... Projection piece, 8
... Spring, 9... Pedestal, 10... Through window, 11... Thumb piece, 12... Pin, 13... Rocking plate, 14... Pin, 1
5... Projection piece, 16... Plate-shaped body, 17... Engagement part.

Claims (1)

[Scope of utility model registration request] An operating member such as a lever or a grip ball is provided on both the inner and outer surfaces of an indoor door that can be opened and closed freely, and a lock piece that can be freely retracted is provided on the end face, and a square shaft that rotates together with the operating member is installed between the operating members. When the inner or outer operating member is rotated, the lock piece is interlocked with the lock piece through the square shaft, and a through-hole is provided in the pedestal that rotatably supports the inner operating member. In addition to fitting the thumb piece, the center between both ends of the thumb piece is rotatably attached to the pedestal, and a plate-like body that rotates together with the square shaft is provided on the square shaft, and the thumb piece that is attached to the plate-like body when pressed is attached to the square shaft. In a lock provided with an engaging portion that engages with one end of the retractable side of the lock, a rocking plate is disposed in the base with the front end of the thumb piece in contact with the back surface of one end of the thumb piece, and one end of the thumb piece of the rocking plate is placed in the base. The outer end is rotatably attached, and the end of the rod is brought into contact with the end of the rod that is recessed into the lock piece at the tip of the rocking plate, and the rocking plate is swung as the lock piece is recessed. A lock characterized by being provided with a protrusion that pushes back one end of the thumb piece.