JP2539288Y2 - Locking device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device provided with a locking rod which protrudes and retracts from a door and is locked in a concave portion of an opening frame, and is mainly used as a lock.

[0002]

2. Description of the Related Art In a door as shown in FIG. 1, a locking device provided with a locking rod which protrudes and retracts from an outer edge of the door and is locked by an opening frame attached to an opening of a wall when the door is closed is widely used. Have been. A conventional locking device, as shown in FIG.
Locking rod b interlocked with operation of a handle provided at the center of door a
Project from the upper and lower edges of the door a. In this locking device, the lock rod is housed in the door when the door is open, but when the door is closed, the handle is turned so that the lock rod protrudes, and the lock lever c is provided on the opening frame. Hole d
The tip of the lock b is engaged with the lock lever b.

[0003]

By the way, the locking rod b of this type of locking device has the inner wall of the engaging hole in a state where the door is closed in order to easily enter the engaging hole d. It is designed such that a gap e is generated between the lock lever and the distal end peripheral surface of the lock rod. For this reason, there is a problem in that even if the door is lightly pressed or the wind hits, rattling occurs and noise is generated.
On the other hand, if the end face width f of the lock rod and the depth width g of the engagement hole are manufactured accurately so as not to cause a gap, even if a slight dimensional error occurs between the opening frame and the door at the time of installation work. If the door does not enter, or if the door is slightly displaced from the opening frame due to long-term use, a deviation occurs between the opening of the engagement hole and the tip of the lock rod, and the lock rod is turned when the handle is turned. There is a possibility that the tip does not need to be in the engagement hole and the door cannot be locked. The purpose of the present invention is to solve the above problems.

[0004]

In order to achieve the above object, the locking device according to the present invention has an opening frame (2) fixed to a wall (W) and the opening frame (2) via a hinge (H). ) Is provided between the door (1) and the door (1) rotatably attached to the door (1). A locking device for holding the lock in that state without operating the lock device, wherein the lock device moves from the door (1) toward the opening frame (2) in conjunction with a manual operation member (9). Locking rod (10)
And provided on the tip member (11) of the lock rod (10),
An urging means for applying an urging force in the direction of rotation of the door (1), and provided on the opening frame (2) corresponding to the tip member (11), and protruding from the door (1). A receiving seat (3) capable of receiving the tip member (11), wherein the urging force is formed by a repulsive force of a spring material, and a part of the tip member (11) is The urging force causes the side wall of the receiving seat (3) to be pressed.

[0005]

When the door is rotated toward the opening frame to close the door, an appropriate manual operation is performed, and in conjunction with this, the locking rod is protruded from the door toward the opening frame. Since the receiving seat has a size to receive the tip member of the locking rod, the protruding tip member is inserted into the receiving seat, and as a result, a part of the tip member is moved to the receiving seat. It is pressed against the side wall. By this operation, the closed door is maintained in the closed state, and the occurrence of rattling of the door is prevented.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a door provided on an opening frame. The illustrated door is a double-opening type, and an opening / closing handle is attached to each central portion of the left and right doors 1, and upper and lower portions of each base edge 1 a are provided with hinges H with respect to an opening frame 2 fixed to the opening of the wall surface W. It is supported rotatably through the. In each embodiment of the locking device, mainly the upper portion will be described.

2 and 3 show a first embodiment of the locking device. FIG. 2 is a longitudinal sectional view taken along a plane parallel to the door surface, and FIG. 3 is a longitudinal sectional view taken along a plane perpendicular to the door surface. FIG. This locking device is provided on the door 1 and the opening frame 2 to lock the door 1, and the receiving frame 3 is provided on the opening frame 2. Receiver 3
Has an engagement hole 4 having a concave cross section by the bottom 3a and the side wall 3b. The receiving seat 3 is fitted into a mounting hole 2 a formed in the inner peripheral surface of the opening frame 2, and is fixed by screws 7. As shown in FIG. 3, a guide surface 6 having an opening portion formed as an inclined surface is formed in the engagement hole 4.

A guide fitting 8 is provided on the edge of the door 1 facing the receiving seat 3. The guide fitting 8 is fixed to an end face of the door using a screw 7. The base end of the handle 9 of the door 1 is connected to a rotating member built in the door 1, and the rotating member rotates together with the handle 9. The upper locking rod 10 is connected to the upper end of the rotating member, while the lower locking rod 10 is connected to the lower end. In the following description, the upper locking rod will be described, but it is preferable that the lower locking rod has the same configuration.

The lock rod 10 can move up and down along the surface of the door 1, and is protruded upward from the door 1 when the handle 9 is in the horizontal position. 10a is configured to retract from the guide fittings 8,8. The locking rod 10 includes a locking rod body 10 </ b> A and a tip member 11, and a rotating member 12 is pivotally supported in the tip member 11. The distal end member 11 is formed to have a thickness that can move up and down while being in sliding contact with the guide portion 8b of the guide fitting 8, and a female screw 11a provided at the lower end is screwed into a male screw 10b formed at the upper end of the lock rod body 10A. Is fixed.
A recess 11b having a U-shaped cross section is formed in an upper portion of the tip member 11, and the rotating member 12 is accommodated in the recess 11b.

The rotating member 12 has an inverted letter shape, and has a rounded upper end to form a sliding contact portion 12a and a lower end provided with a rotating contact portion 12b. The turning member 12 is rotatably supported by a pivot shaft 13 inserted and fixed to the distal end member 11. A long hole 12 which is vertically long and open front and rear (left and right in FIG.
c is formed, and a spring 14 is interposed in the elongated hole 12c. The spring 14 is held at the center by the pivot shaft 13, and one end 14 a is locked on the upper inner peripheral surface of the rotating member 12, and the other end 14 b is locked on the inner peripheral surface of the concave portion 11 b of the tip member 11. The sliding contact portion 12a located at the tip of the door 10 is pressed and urged in a direction perpendicular to the surface of the door 1 (to the left in FIG. 3).

Thus, when the tip member 11 is accommodated in the door 1, the sliding contact portion 12 a comes into contact with the inner peripheral surface of the guide portion 8 b formed in a cylindrical shape of the guide fitting 8, and When the distal end projects outward from the door 1, the rotating member 12 is urged counterclockwise in FIG. 3 by the urging force of the spring 14 until the rotation contact portion 12b comes into contact with the inner peripheral surface of the concave portion 11b. Can rotate. When the distal end member 11 is pulled into the door 1, the sliding member 12a is slidably contacted with the guide fitting 8, whereby the rotating member 12 is rotated clockwise and retracts.

When the door 1 is locked by the locking device, the door 1 is closed in the opening frame while the handle 9 is turned downward from the horizontal state. Thereafter, when the handle 9 is turned horizontally, the lock rod 10 moves vertically, and the lock rod 10 at the upper part projects from the guide fitting 8 as shown in FIG. 4 from the state shown in FIGS. At this time, the spring 14
The rotating member 12 is rotated by the urging force of the above, and the sliding contact portion 12a projects to the guide surface 6 side of the receiving seat 3. The sliding portion 12 a slides on the guide surface 6 with the upward movement of the distal end member 11 constituting the lock rod 10, and the lock rod 1 is inserted into the engagement hole 5.
The distal end portion 11c of the distal end member 11, which is the distal end of 0, is engaged. At this time, since the sliding contact portion 12a is inserted while being guided by the guide surface 6, the sliding contact portion 12a is attached to the lower surface of the opening frame 2.
There is no risk of hitting.

The spring 14 applies a biasing force in a direction perpendicular to the surface of the door 1, so that the sliding contact portion 12a presses and biases the engagement hole 4. Then, as shown in FIGS. 5 and 6, the upper end of the distal end member 11, which is the distal end of the lock rod 10, is pressed into the engagement hole 4. Is held in a fixed position via Therefore, even if wind pressure or the like is applied to the surface of the door 1 or a person touches the door 1, no rattling occurs, so that generation of noise is prevented.

FIGS. 7 and 8 show a second embodiment of the locking device, and are longitudinal sectional views cut in a direction perpendicular to the surface of the door. This locking device has substantially the same basic configuration as that of the first embodiment, except that a guide portion of a guide fitting 8 provided on the door 1 is formed large on one side. Note that parts common to the first embodiment are denoted by the same reference numerals. The same applies to the following examples.

The rotating member 15 of this embodiment includes a rotating contact portion 15
The sliding contact portion 15a can be retracted into the door 1 while the b is kept in contact with the inner peripheral surface of the concave portion 11b. Locking rod 10
Is moved upward, the tip member 11 protrudes outward from the door 1, and when the sliding contact portion 15 a contacts the guide surface 6 of the receiving seat 3,
The rotating member 15 urged in the counterclockwise direction is rotated clockwise, and is inserted into the engaging hole 4 while the sliding contact portion 15a slides on the guide surface 6. Then, as shown in FIG.
The upper end 11c of the distal end member 11, which is the distal end of the door 1, is urged against the inner surface of the engagement hole 4, and the door 1 is held at a fixed position.

FIGS. 9 and 10 show a third embodiment of the locking device, and are longitudinal sectional views cut in a direction perpendicular to the surface of the door.
This locking device has the same parts as in the first embodiment, but the base end 16b of the rotating member 16 is supported by the pivot shaft 13, and the jaw of the distal end 16a is tapered to make the sliding contact surface. 16c
Is provided. Further, a tapered surface 16 is formed at a front end portion 16a of the rotating member 16 in a front end side in the biasing direction in sliding contact with the receiving seat 4.
d is formed, and when the lock rod 10 protrudes into the receiving seat 4, the positional deviation between the locking rod and the receiving seat 4 is absorbed. Thereby, as shown in FIG. 10, when the door 1 is opened from the state in which the door 1 is closed and the upper end 11 c of the distal end member 11 which is the distal end of the lock rod 10 is engaged with the engagement hole 4 a, When the tip member 11 of the rod 10 is pulled into the door 1, the sliding surface 16 c of the rotating member 16 slides into the opening end of the guide portion 8 b of the guide fitting 8 and enters the door 1.

FIG. 11 is a longitudinal sectional view showing a fourth embodiment of the locking device. In this locking device, the distal end member 17 is formed in a cylindrical shape, an opening 17b is provided in a side portion, and a sliding contact member 18 is fitted in the opening 17b. The sliding member 18 has a substantially U-shaped cross section, a base 18a having a flange shape, and the base 18a is adapted to engage with the inner peripheral wall of the tip member 17, and the head 18
b faces outside the opening 17b. A compression spring 19 is provided between the inner surface of the head 18b and the inner peripheral wall of the tip member 17. As a result, the head 18b is pressed against the engaging hole 4 of the receiving seat 3, so that the door 1 is held at a fixed position.

Although the sliding contact member 18 has a substantially U-shaped cross section, a steel ball or the like is accommodated in the hollow hole of the tip member 17 and pressed against the opening 17b by a compression spring. When the tip 17a of the tip member 17 protrudes outward from the door 1, a part of the ball may be pressed against the engagement hole 4.

FIG. 12 is a longitudinal sectional view showing a fifth embodiment of the locking device. The locking device includes a distal end 20a of the distal end member 20.
To which a leaf spring 21 is attached. Tip member 20
Is connected to the lock rod body 10A via a coupling 23. The leaf spring 21 is formed in a U-shape such that the distal end member 20 is sandwiched downward from the distal end, and a base 21 a and one end 21 b are fixed to an end surface 20 b and a right side 20 c of the distal end member 20, and the other end 21 c Is the tip member 20
, And the other end 21c is bent in the shape of a letter, and the tip is in contact with the other end 21c.

When the distal end 20a of the distal end member 20 is engaged with the engaging hole 4 of the receiving seat 3, the leaf spring 21
As a result, the door 1 is held in a fixed position via the lock rod 10.

FIG. 13 is a longitudinal sectional view showing Embodiment 6 of the locking device. This locking device includes a distal end 24a of the distal end member 24.
The magnet 25 is attached to the peripheral surface 24b on the side. When the receiving seat 3 is not made of a magnetic material, a magnetic material 26 is embedded on the outer surface of the receiving seat 3 so as to face the magnet 25. Thus, when the distal end 24a of the distal end member 24 projects outward of the door 1 and is inserted into the engaging hole 4, the distal end 24a side is pulled toward the inner surface of the engaging hole 4 by the magnetic force of the magnet 25 and is urged. State. Then, the distal end member 24 is attracted to the engagement hole 4, and the door 1 is held at a fixed position via the lock rod 10.

Although the above example shows the case where the lock rod moves up and down, the lock rod may move in the horizontal direction.
For example, the present invention may be applied to a dead bolt of a cylinder lock.

[0023]

As described above, the present invention is provided between an opening frame fixed to a wall surface and a door rotatably attached to the opening frame via a hinge. The locking device holds the door in the closed state by turning the door toward the closed position without further turning the door.Therefore, the urging force of the urging means is small enough to prevent the door from rattling. Power will suffice. Further, the biasing means of the present invention is provided on the tip member of the lock rod, and applies a biasing force in the turning direction of the door by the repulsive force of the spring material.
Since a part of the tip member is pressed against the side wall of the receiving seat by the repulsive force of the spring material, the manual operating force for causing the locking rod to move out and out of the lock member overcomes the frictional resistance due to the repulsive force of the spring material. This suffices with force, and eventually all the components can be simplified. Further, the receiving seat of the present invention can be set to an appropriate size within a range that can receive the tip member protruding from the door, so that errors in construction and the like can be absorbed.

Further, by providing the receiving seat or the rotating member with a taper, even if the position of the locking rod and the receiving seat is shifted, it can be absorbed.

[Brief description of the drawings]

FIG. 1 is a front view of a door on which an up-down locking device is installed.

FIG. 2 is a vertical sectional view taken along the line II-II of FIG. 3, showing the first embodiment.

FIG. 3 is a longitudinal sectional view showing Example 1 and cut along a line AA in FIG. 1;

FIG. 4 is a vertical cross-sectional view taken along a line AA in FIG. 1, showing the engagement of the lock rod.

FIG. 5 is a diagram illustrating the engagement completed state according to the first embodiment,
It is a line longitudinal cross-sectional view.

FIG. 6 is an AA diagram of FIG. 1 showing the engagement completed state of the first embodiment.
FIG. 4 is a vertical cross-sectional view taken along a line.

FIG. 7 is a longitudinal sectional view showing Example 2 and cut along a line AA in FIG. 1;

FIG. 8 is an AA diagram of FIG. 1 showing the engagement completed state of the second embodiment.
FIG. 4 is a vertical cross-sectional view taken along a line.

FIG. 9 is a longitudinal sectional view illustrating Example 3 and cut along a line AA in FIG. 1;

FIG. 10 is a vertical cross-sectional view showing an engaged state of the third embodiment, taken along a line AA in FIG. 1;

11 is a longitudinal sectional view showing Example 4 and cut along a line AA in FIG.

FIG. 12 is a longitudinal sectional view showing Example 5 and cut along a line AA in FIG. 1;

FIG. 13 is a longitudinal sectional view showing Example 6 and cut along a line AA in FIG. 1;

FIG. 14 is a cross-sectional view showing a conventional lift lock.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Opening frame 3 Receiving seat 4 Engagement hole 10 Locking rod 10A Locking rod main body 11 Tip member 12 Rotating member

Claims (2)

(57) [Scope of request for utility model registration] 1. An opening frame (2) fixed to a wall surface (W).
And a door (1) rotatably attached to the opening frame (2) via a hinge (H), and closed by rotating toward the opening frame (2). A locking device for holding the door (1) in the state without rotating the door (1) any further, wherein the locking device is interlocked with a manual operation member (9). ) From the opening frame (2) toward the opening frame (2), and a locking rod (10) provided on the tip member (11) of the locking rod (10), and attached to the turning direction of the door (1). Biasing means for providing power;
The tip member (1) provided on the opening frame (2) corresponding to the tip member (11) and protruding from the door (1).
And a receiving seat (3) capable of receiving 1), wherein the urging force is formed by a repulsive force of a spring material, and a part of the tip member (11) is formed by the urging force. A locking device characterized by being pressed against a side wall of a receiving seat (3). 2. The rotating member (12), wherein the urging means has a substantially rectangular shape in a front view, has a through-hole (12c) in the center thereof, and has a bent shape in a sectional view.
And the rotating member (1) fixed to the tip member (11).
A pivot shaft (13) rotatably supporting the center of 2); an end portion (14) held by the pivot shaft (13);
a) is locked on the tip side (12a) of the rotating member (12), and the other end (14b) is locked on the inner peripheral surface of the tip member (11). With this configuration, when the lock rod (10) is moved with the door (1) closed, the distal end (1
2a) protrudes from the distal end member (11) orthogonally to the moving direction, while the amount of protrusion is such that the proximal end side (12b) of the rotating member abuts on the distal end member (11). The locking device according to claim 1, wherein the locking device is limited by: