JPH0230607Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a locking device used for locking a door, window or lid or other object having one end pivoted thereon.

[Conventional technology]

A locking tool used for locking a door, window, lid, or other object having one end pivotally connected has heretofore been disclosed in Japanese Utility Model Publication No. 53-38000.

This locking tool constitutes a movable body made of a hard synthetic resin material, which has a magnet fitting hole in the front half, a flat surface in the rear half, and a spring fitting rod in the rear end. A magnet body consisting of magnetic pole pieces in contact with both sides of a ferrite magnet and integrated with a pin is fitted into the body fitting hole, and the movable body is slidably inserted into a cylindrical body made of a hard synthetic resin material. The magnet body in the movable body is made to be able to freely protrude and retract from the front end opening of the cylindrical body, and the spring-fitting rod is wrapped with a spring that elastically pushes the movable body outward. An endless guide groove having an M-shaped locking part at the front end and a V-shaped locking part at the rear end is provided on the flat surface, and a pin hole is provided at the rear end of the cylinder. A suction device is constructed by inserting an actuating pin having an L-shaped bent portion at both ends between the holes and rotatably inserting one of the L-shaped bent portions into the pin hole, and attaching this suction device to a door. In addition to being attached to the frame, it is constructed by attaching an iron attracting member that attracts the tip of the magnetic pole piece to a required location of a single-open type door that can be opened and closed only from the outside.

[The problem that the idea aims to solve]

According to the conventional locking device, an operating pin having L-shaped bent portions at both ends is interposed between a pin hole provided at the rear end of the casing and an endless guide groove, and one L-shaped bent portion is inserted. The L-shaped bent portion is slidably inserted into the guide groove, and the other L-shaped bent portion is rotatably inserted into the pin hole.

However, if this conventionally configured locking device is used many times, the L-shaped bent portion on one side of the actuating pin may come off the guide groove, and in such cases it will not work properly. The problem was that I couldn't do it.

In view of the above problems, it is an object of the present invention to provide a novel magnetic locking device with a simple configuration that operates normally no matter how many times it is used and can reliably open and close the door. shall be.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention includes a housing 1 having a door frame mounting hole 15, a cylindrical part 2 provided in the housing 1 and having an opening hole 2a on the tip surface, and the cylindrical part 2. 2, a piston-like body 3 that is reciprocably inserted into the body and has a flat surface 8 on its upper part;
, a magnet body 4 which is fixed to the tip of the piston-shaped body 3 and attracts the attracted member 21 attached to the single-opening door 20 , and a magnet body 4 between the rear end of the cylinder-shaped part 2 and the piston-shaped body 3 . The attached magnet body 4
a double-acting spring 1 that projects outward from the opening hole 2a;
3 and a locking piece 5 that is attached to the rear end of the cylindrical part 2 along its longitudinal direction and that engages and disengages with the piston-shaped body 3. The stop piece 5 is a leaf spring having a hook-shaped part 6 at its tip, and has a magnetic body on the flat surface 8 located on one side and on the tip side of the extension line K of the leaf spring 5 in the non-elastic state. 4
A Σ-shaped guide groove 10 that locks the hook-shaped portion 6 of the leaf spring 5 when it is retracted, and a hook of the leaf spring 5 that is located on the other side and on the rear end side of the extension line K of the leaf spring 5 in the non-retracted state. A guiding protrusion 30 is provided with a V-shaped guide groove 12 for guiding the shaped part 6 to one side, and a hook-shaped part of the leaf spring 5 is provided at the rear end of the piston-shaped body 3 when the magnet body 4 is projected. 6 is configured to have a locking portion 31 for locking.

[Effect]

The locking tool configured as described above is attached to the door frame 19. Then, a member to be attracted is attached to a required location of the single-open door 20 that can be opened and closed only from the outside, and the member to be attracted is attracted to the magnet 4.

When closing the door 20, the door 20 is first moved in the closing direction and the attracted member 21 is attracted to the magnet 4. Then, the door 20 is further pressed in the closing direction, and the piston-shaped body 3 is pushed into the cylinder-shaped part 2 against the biasing force of the reciprocating spring 13. At this time, the hook-shaped part 6 of the leaf spring 5 slides on one side of the V-shaped guide part 12 and is locked to the Σ-shaped guide part 10, so that the piston-shaped body 3 is pushed in, that is, the door is closed. can be maintained in the same condition.

When opening the door 20, the door 20 is lightly pressed to push the piston-shaped body 3 in, and the hook-shaped part 6 is separated from the Σ-shaped guide part 10 by the restoring force of the leaf spring 5 in the other direction. Next, when the pressure on the door 20 is released, the magnet body 4 protrudes from the opening hole 2a due to the biasing force of the reciprocating spring 13, and the door 20 becomes in a half-open state.
At this time, the hook-shaped portion 6 of the leaf spring 5 passes between the other side portion of the guiding protrusion 30 and the upper circumferential wall of the piston-shaped body 3, and is locked to the locking portion 30a. After the door 20 is in the half-open state, the user puts his or her hand on the finger hook 22 or the like to pull the attracted member away from the magnet 4 and open the door 20.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings. Fig. 1 is an overall perspective view, Fig. 2 is a partially cutaway plan view showing the piston-like body protruding, and Fig. 3
The figure is a partially cutaway plan view showing the state in which the piston-like body is retracted, Figure 4 is a schematic plan view showing the state of use, Figure 5 is a side sectional view taken along the line A-A in Figure 3, and Figure 6 is the entire body. FIG.

This idea is based on the door frame mounting hole 1 as shown in the drawing.
5, a cylindrical portion 2 provided in the housing 1 and having an opening hole 2a on the tip surface;
A piston-shaped body 3 is inserted into the cylinder-shaped part 2 so as to be reciprocally movable and non-rotatable and has a flat surface 8 on the upper part, and a cover fixed to the tip of the piston-shaped body 3 and attached to the single-opening door 20. An attracting member, that is, a magnet body 4 to which the magnetic metal piece 21 is attracted, and a reciprocating member that is attached between the rear end of the cylindrical part 2 and the piston-like body 3 and causes the magnet body 4 to protrude outside from the opening hole 2a. It is composed of a spring 13 and a leaf spring 5 that is attached to the rear end of the cylindrical part 2 along its longitudinal direction and engages and disengages from the piston-shaped body 3.

The locking piece 5 has a hook-shaped portion 6 at the tip.

The flat surface 8 of the piston-like body 3 has a hook-like shape on the flat surface 8 of the leaf spring 5 when the magnet body 4 is retracted at a position on one side and on the tip side of the extension line K of the leaf spring 5 in the non-elastic state (see FIG. 2). A Σ-shaped guide part 10 that locks the part 6 and a hook-shaped part 6 of the leaf spring 5 is guided to one side at a position on the other side and on the rear end side of the extension line K of the leaf spring 5 in the non-resilient state. A guiding protrusion 30 having a V-shaped guiding portion 12 is provided.

A locking portion 31 is provided at the rear end of the piston-shaped body 3 to lock the hook-shaped portion 6 of the leaf spring 5 when the magnet body 4 is projected.
have.

The magnet body 4 has a structure that is obvious to those skilled in the art. For example, as shown in FIG. ' A hole is opened, the inside of the surrounding frame 43 integrally formed on the inner surface of the circular end plate 41 is defined as a magnet body fitting hole 44, and the permanent magnet 16 is housed in this magnet body fitting hole 44. Further, yokes 17 and 17' are magnetically attached to both left and right sides of the permanent magnet 16, and
The tips of the yokes 17, 17' are fitted into stopper holes 42, 42'.

The locking device configured as described above is attached to the door frame 19 as shown in FIG. Then, an attracted member, that is, a magnetic metal piece 21 is attached to a required location of a single-open door 20 that can be opened and closed only from the outside.
The magnetic metal piece 21 is attracted to the yokes 17, 17' of the circular end plate 41 of the magnet body 4. Note that 22 indicates a finger hook portion.

Next, the operation of the present invention will be explained.

When closing the door 20, first move the door 20 in the closing direction and move the magnetic metal piece 21 to the yoke 17,
It is adsorbed to 17'. Then, the door 20 is further pressed in the closing direction, and the piston-shaped body 3 is pushed into the cylinder-shaped part 2 against the biasing force of the reciprocating spring 13. At that time, as shown in FIG.
slides on the lower side 11' of the V-shaped guide part 12 and Σ
It reaches the shape guide part 10 and is locked without being able to climb up the inner wall surface of the upper corner part 12' in the Σ shape guide part 10, so the piston-like body 3 is pushed in, that is, the door 20 is closed. can be maintained.

When opening the door 20, the door 20 is lightly pressed and the piston-shaped body 3 is pushed in, and the hook-shaped part 6 is separated from the Σ-shaped guide part 10 by the restoring force of the leaf spring 5 in the other direction, that is, in the upward direction. let Next, when the pressure on the door 20 is released, the magnet body 4 protrudes from the opening hole 2a due to the biasing force of the reciprocating spring 13, and the door 20 becomes in a half-open state. At this time, the hook-shaped portion 6 of the leaf spring 5 passes between the upper side portion 11 of the guiding protrusion 30 and the upper peripheral wall of the piston-shaped body 3 and is locked by the locking portion 31 .
After the door 20 is in the half-open state, the finger hook part 2
2 to separate the magnetic metal piece 21 from the magnet body 4 and open the door 20.

[Effect of idea]

According to the present invention, by utilizing the restoring force of the leaf spring 5, the hook-shaped portion 6 of the leaf spring 5 slides on the circumferential side of the guiding protrusion 30 provided on the flat surface 8 of the piston-like body 3. Because of the structure, there is a certain allowable range for the sliding range of the leaf spring 5, so the operation can be performed reliably no matter how many times it is used, and the door can be opened and closed reliably. Therefore, the present invention is extremely convenient for use in locking or unlocking doors, windows, lids, etc.

[Brief explanation of the drawing]

The figures show an embodiment of the locking device for doors, windows, lids, etc. of the present invention, in which Fig. 1 is an overall perspective view, and Fig. 2 is a partial cutaway showing a state in which the piston-like body is protruded. A plan view, FIG. 3 is a partially cutaway plan view showing the state in which the piston-like body is retracted, FIG. 4 is a schematic plan view showing the state of use, and FIG. 5 is a side sectional view taken along line A-A in FIG. 3. FIG. 6 is an exploded perspective view of the entire device. DESCRIPTION OF SYMBOLS 1... Housing, 2... Cylinder-shaped part, 3... Piston-shaped body, 4... Magnetic material, 5... Leaf spring, 6...
...Hook-shaped part, 8...Flat surface, 10...Σ-shaped guide part, 11...Top side part, 11'...Bottom side part, 1
2... V-shaped guide portion, 13... Double-acting spring, 15...
...Door frame mounting hole, 16...Permanent magnet, 17, 17'
...Yoke, 19...Door frame, 20...Door, 21...
...Metal piece, 22...Hook part, K...Extension line.

Claims (1)

[Scope of claim for utility model registration] A casing 1 having a door frame mounting hole 15, and the casing 1
A cylindrical part 2 provided therein and having an opening hole 2a on the tip surface, a piston-shaped body 3 inserted into the cylindrical part 2 so as to be reciprocally movable and having a flat surface 8 on the upper part, and the piston-shaped body. a magnet body 4 which is fixed to the tip of the member 3 and which attracts the attracted member 21 attached to the single-opening door 20; and a magnet body 4 which is attached between the rear end of the cylinder-shaped part 2 and the piston-shaped body 3 a door consisting of a double-acting spring 13 that projects outward from the opening hole 2a, and a locking piece 5 that is attached to the rear end of the cylindrical part 2 along its longitudinal direction and that engages with and disengages from the piston-shaped body 3; In a locking device for a window or a lid, the locking piece 5 is a leaf spring having a hook-shaped portion 6 at its tip, and the locking piece 5 is attached to the flat surface 8 from the extension line K of the flat spring 5 in a non-resilient state. Magnet body 4 located on one side and at the tip side
A Σ-shaped guide part 10 that locks the hook-shaped part 6 of the leaf spring 5 when retracted, and a hook of the leaf spring 5 that is located on the other side and on the rear end side of the extension line K of the leaf spring 5 in the non-elastic state. A guiding protrusion 30 having a V-shaped guide part 12 for guiding the shaped part 6 to one side is provided, and the hook-shaped part of the leaf spring 5 is attached to the rear end of the piston-shaped body 3 when the magnet body 4 is projected. A locking tool for a door, window, lid, etc., characterized by having a locking part 31 for locking a door, window, or lid.