JPH06180079A - Door locking device - Google Patents

Abstract

PURPOSE:To secure a door locking device which forms a lock box into a specific shape so as not to make a handle jut out of both sides of a door in a normal state and simultaneously have the handle and a latch mechanism built in the lock box in an ingenious manner. CONSTITUTION:This door locking device is provided with a spatial part 11 surrounded by a lock box 1 at the outside of this lock box 1, a thin handle 2 installed in this spatial part 11, a turning longitudinal shaft 30 to which the handle 2 is connected, a handle reset means 4 linked up with the turning longitudinal shaft 30, a holder 6 being clamped to the lock box 1, a latch lever 7 being supported by the holder 6 free of slide motion having energized a latch head 71 in a direction projectable, and a retractor 8 being linked up with the turning longitudinal shaft 30 and drawing in the latch lever 7. Likewise, the latch head 71 is formed into a prismatic form setting its plane form into a parallelogram, while it is pivotally supported on the latch lever 7, and besides, the operation is properly controlled by a control means 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device used for one door or both doors, and is particularly suitable for use as a lock device for a gate.

[0002]

2. Description of the Related Art Generally, when a door is opened or closed from the inside or outside, a handle such as a knob provided on each side is operated to operate a latch mechanism. Further, since each handle is provided so as to project from the door surface, it may obstruct the passage of traffic or the handle may hit the body. Cars may collide and be damaged at the door handles.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a lock box has a unique shape so that the handle hardly protrudes from both sides of the door when the handle is not operated. It is an object of the present invention to provide a door locking device that cleverly incorporates a mechanism and thus solves the above problems.

[0004]

In order to achieve the above-mentioned object, the invention as set forth in claim 1 has a space part which is partly or wholly surrounded by the outer side of the lock box and which communicates in the lateral direction. A handle having a thickness smaller than the thickness of the door or the thickness of the door provided in the space for attaching the lock box, and a rotating vertical axis rotatably supported by the lock box with the rear end side of the handle connected.
Returning means that is linked to the rotary axis and is provided in the lock box to return the handle to the normal position, a holder fixedly provided in the lock box, and a latch head slidably supported by the holder. It is characterized in that it is provided with a latch rod that is biased in a direction in which the latch rod is protruded from the retractor, and a retractor that is provided in the lock box and that is retracted so as to be retracted and that is linked to the rotating vertical axis.

The invention described in claim 3 is the same as claim 1
The invention has the following structure added thereto. That is, while the latch head is separated from the latch rod,
The latch head is a prism having a parallelogram in a plan view, and the latch head is supported by a latch rod so as to be able to rotate around a vertical axis at a substantially central portion thereof, and a rear side of the latch head and a lock box. Between the latch heads, the rotation position of the latch head is the first angle position in which one slope on the front side of the latch head is substantially parallel to the side plate of the lock box and the strike is locked, and the other slope is the lock box. Is provided between the second side plate and the side plate, and a control means for restricting the rotation of the latch head at the first angle position is provided.

[0006]

The door locking device of the present invention has the above structure.
In the normal state where the handle is not operated regardless of whether the door is open or closed, the handle is made to hardly protrude from both sides of the door, and the thickness of the lock box is almost the same as the conventional one.

The lock device according to claim 1 can be applied to a device (not shown) in which the latch head and the latch rod are integrally connected. Next, the operation operation in that case will be described.

To open the closed door, push or pull the handle to rotate the rotary axis. By that operation, the retractor operates and the latch rod and the latch head are slid and displaced rearward against the bias in the projecting direction, causing a strike on the fixed pillar, the door frame, or the other door of both doors. The restrained state of the engaged latch head is released. At this point, the door can be freely opened and closed, and the handle returns to its original position by the returning means when released from the hand.

When the door is closed, the latch head automatically retracts once at the strike portion and re-projects and engages with the strike entrance of the strike without rotating the handle. You can close it just by pulling.

Next, the operation peculiar to the lock device of claim 3 will be described. In the closed state of the door, the latch head is engaged with the engagement entrance of the strike (see FIG. 7A), and one of the slopes on the front side of the latch head is at the first angular position substantially parallel to the side plate of the lock box.

Further, the rotation of the latch head is regulated by the urging force in the protruding direction and the movement of the control means, and the engaged state with respect to the strike is maintained.

When the handle is pushed or pulled to rotate the rotary shaft, the retractor displaces the latch rod rearward against the biasing force in the projecting direction. At this time, the restraint by the control means of the latch head is released (see FIG. 7B), and the latch head becomes rotatable at the tip of the latch rod.

When the door is opened in this state, one slope of the latch head is pushed by the strike to rotate the latch head (see FIG. 7C), and the other slope becomes substantially parallel to the side plate of the lock box. The latch head rotates to the angular position (Fig. 7).
See D).

Since the latch head cannot rotate any more due to the restriction of the control means, the wedge head formed between the one slope and the strike causes the latch head and the latch rod to move backward once against the biasing force of the latch rod. Move
The latch head and strike can be disengaged. Therefore, the latch head projects forward by the biasing force of the latch rod while maintaining the second angular position (see FIG. 7E). In this way, the latch head disengages from the strike.

When the door is closed, since the latch head is formed substantially symmetrically with respect to its longitudinal axis, it engages with the strike through the same process as described above (FIGS. 8A and 8B).
See FIG. 7A).

[0016]

Embodiments of the present invention will now be described with reference to the drawings. First, referring to FIG. 1 to FIG. 3, a characteristic lock box 1 of the present invention will be described. The lock box 1 has a space portion 1 which is surrounded by the lock box 1 and which is partially or wholly communicated with the lock box 1 in a lateral direction.
1 is provided. The side shape of the space portion 11 can be arbitrarily formed such as a rectangle, a square, a circle, or an oval. When viewed from the side of the lock box 1, it is preferable that it is U-shaped or U-shaped. In the illustrated lock box 1 having a U-shaped side surface, a part (front portion) of the space portion 11 thereof is open, but in a box-shaped lock box not shown, the outer periphery of the space portion is closed in the side shape. It becomes a figure.

The main body of the lock box 1 can be divided into a plurality of pieces (three in the figure) for manufacturing reasons, and each piece is fixed by screws 91 or welding. The hollow parts 12 and 13 of the lock box 1 are provided in the upper part and the lower part, and the respective members of the latch mechanism described later are incorporated therein.

Reference numeral 14 is a cover plate of the upper hollow portion 12, 15 is a bottom plate of the lower hollow portion 13, 16 is a partition plate of the lower hollow portion 13, and 17 is a through hole 18 into which a latch head 71 described later is inserted. A front plate composed of a single plate is shown, and these are fixed to the lock box body 1 by screws 92, 93 and the like.

As shown in FIG. 1, the entire lock box 1 having such a structure is fixed to a mounting hole 20 at the free side end of the single door 10 or the double door by screws or welding.

Inside the space 11 of the lock box 1, there is provided a handle 2 having an arbitrary shape having a thickness of the door 10 to which the lock box 1 is attached or a thickness smaller than the thickness of the lock box 1. The lock box 1 is usually thinner than the door 10, but the lock box 1
The side plate of the lock box 1 may be decorated so that a part of the side plate protrudes from the outer surface of the door 10.
The handle 2 mounted inside may protrude slightly from the outer surface of the door 10. The present invention allows such slight protrusions.

The handle 2 of the illustrated example has a single rod-shaped handle 21 arranged vertically in the front and a column 22 which doubles as a rear cover.
Are connected by a pair of upper and lower horizontal members 23, 23, and the rear end side of the pair of horizontal members 23, 23 has a rotation axis 3
It has a square hole at 0 and is connected so that it cannot rotate.

In FIG. 2, reference numeral 90 is a wear-resistant bush made of, for example, a synthetic resin material, which is provided at the pivotal sliding contact portion between the rear end portion of the handle 2 and the lock box body 1, and most of the load of the handle 2 is present. Is received by the lock box body 1 via the bush 90. Reference numeral 94 denotes a screw connecting the rod-shaped handle 21 and the lateral member 23.

Since the handle 2 shown in the drawing has the communication portion 24 extending over both side surfaces of the door 10, it can be used from both inside and outside of the door 10 even if the handle 21 is single.
This is preferable because the number of parts can be reduced and the appearance can be simplified.

If the handle 2 does not have the communication portion 24, it is needless to say that handles may be provided on both inner and outer side surfaces of the handle 10 within a range that does not project from both inner and outer side surfaces of the door 10 or the lock box 1.

The rotating vertical axis 30 to which the rear end side of the handle 2 is non-rotatably attached is, as shown in FIGS. 2, 4 and 5, mostly formed of an angular axis and both ends of the lock box 1. Cover plate 1
4 and the bottom plate 15 are rotatably supported.

Further, as shown in FIGS. 2 and 6, the handle 2 and the rotation range of the rotary shaft 30 that rotates together with the handle 2 are at least one unit integrally provided at the rear end of the handle 2 (in the figure, It is regulated to a required angle by the two (two) protrusions 25 and the rotation regulating recesses 19 provided at corresponding portions of the lock box 1. Figure 6
The handle 2 represented by the chain line indicates the maximum rotation angle position during operation.

With reference to FIG. 2 and FIG. 5, description will be made on the returning means 4 which is linked to the rotating vertical axis 30 to return the handle 2 to the normal position. At least one returning means 4 may be provided, but in the illustrated example, in order to stabilize the operation, the upper hollow part 12 and the lower hollow part 13 of the lock box 2 are separated by the partition plate 16 from the upper part. They are provided symmetrically.

In each of the returning means 4, an action piece 41 having a heart-shaped plan is fixedly attached to the rotating vertical axis 30 with a square hole, and an action pin 42 protruding from the tip of the action piece 41.
And a stopper pin 45 wound around a mounting portion 43 projecting from the lock box 1 and stopper pins 45 projecting from the lock box 1 for orienting both ends of the torsion spring 44 in a normal state. Is fitted between both ends of the torsion spring 44.

Therefore, the action pin 4 which is turned by the turning vertical axis 30 and the action piece 41 in accordance with the turning operation of the handle 2.
2 is returned to the original position by the urging force of the torsion spring 44 when the hand is released from the handle 2 when it is displaced by a predetermined angle against the elastic force of the torsion spring 44, so that the handle 2 is also returned to the normal position. be able to.

Further, a known click means 5 is attached to the action piece 41 of each return means 4. Clicking means 5
Is a sphere 51 that normally contacts the stop groove 53 of the action piece 41.
And the compression spring 52. The action piece 41 is regulated so as to be reliably positioned at the original position, and the regulation keeps the stationary position of the handle 2 in the normal state.

As shown in FIGS. 2 and 4, a box-shaped holder 6 has a flange 61 at its lower part divided by a partition plate 16 in the lower hollow portion 13 of the lock box 1 and has a front plate 1.
7 and a part of the lock box 1 are fixed so as to be sandwiched, and the middle piece 6 is provided at the center of the holder 6 in the length direction.
2 is fixed.

A latch rod 7 having a latch head 71 is slidably held in the holder 6 so as to penetrate the holder itself and the intermediate piece 62. Latch rod 7
A guide rod 72 having a planar shape substantially the same as that of the latch rod 7 is attached to the upper surface of the holder with a space therebetween, and the guide rod 72 is slidably penetrated through the rear plate 63 of the holder 6. Yes, the frame portion 73 and the rear end portion 7 having a U-shaped planar shape at the front end
At 4 it is connected to the latch rod 7. A part of the main body of the guide rod 72 and a frame portion 73 at the tip end slide-contact with the inner surface of the holder 6 to smoothly guide the latch rod 7.

The compression spring 75 wound around the latch rod 7 is arranged between the frame portion 73 of the guide rod 72 on the latch rod 7 side and the intermediate piece 62 on the holder 6 side, and the latch head 71 is provided.
Is always biased in a direction in which it projects from the front plate 17 of the lock box 1. The wide width portion 79 of the latch rod 7 biased forward is brought into contact with the back portion of the intermediate piece 62, so that the forward sliding is restricted.

The latch rod 71 is biased in a direction in which the latch head 71 projects, and is pulled backward to engage with a fixed column, a door frame, or a strike on the other door.
The retractor 8 is required to release the constraint.

The retractor 8 of the illustrated example is provided in the lower portion of the lower hollow portion 13 of the lock box 1, and has a semi-circular cam piece 81 fixed to the rotating vertical axis 30 and a Y-shaped plane. -Shaped bent rear end pieces 82, 82 of the latch rod 7
This configuration makes it possible to retract the latch head 71 by rotating the rotary shaft 30 in either direction. In other words, the latch head 71 can be pulled in by pushing or pulling the handle 2.

The above-mentioned latch head 71 may be fixedly provided integrally with the latch rod 7 or as a separate body, or as shown in the figure, the latch head 71 may be a separate body and movable with respect to the latch rod 7. But it's okay.

A fixed type latch head (not shown) usually has a fixed column, a door frame, or a single sloped surface that exhibits a wedge action with a strike provided on the other door of the double door.

The structure of the movable latch head 71 in the illustrated example and its surroundings will be described in detail below. As shown in FIGS. 2, 4, 7, and 8, the latch head 71 is formed in a prismatic shape having a plane shape of a substantially parallelogram, and the tip end of the latch head 71 is located at the substantially central portion and the vertical axis 76. It is supported by a latch rod 7 which is pivotally attached via.

A control means 3 is provided between the rear side of the latch head 71 and the lock box 1. This control means 3
With respect to the rotational position of the latch head 71, one slope 77 on the front side of the latch head 71 is substantially parallel to the side plate of the lock box 1 and is locked by the strike 40 fixed to the fixed column, door frame or the like. The angular position P and the other inclined surface 78 are regulated between the second angular position Q in which the side surface of the lock box 1 is substantially parallel to each other, and the rotation of the latch head 71 is regulated at the first angular position P. , A pair of upper and lower circles projecting on the latch head 71 with the edges of a pair of upper and lower control projections 31 projecting on the back plate of the front plate 17 and the inner surface 33 of the holder 6 fixed to the lock box 1 as the control surface. Latch head 7 including columnar protrusion 70
1 is a follower.

The control projection 31 has a circular arc-shaped first notch for stably locking the projection 70 of the latch head 71 and holding the latch head 71 at the first angular position P when the door 10 is closed. 36, and a slightly shallow second notch 37 that stably holds the protrusion 70 of the latch head 71 when the door 10 is opened to hold the latch head 71 at the second angular position Q.

Although the lock device of the present invention is an empty lock,
It is free to attach the locking mechanism to the latch rod portion or separately with the dead bolt.

[0042]

According to the door locking device of the present invention described above, the handle is operated from both side surfaces of the door in the normal state, that is, when the handle is not operated regardless of whether the door is open or closed. Since it does not project, it does not obstruct the passage of traffic or hit people or vehicles, and it is possible to effectively use the limited space.

Further, since the handle is incorporated in the space formed outside the lock box, it is not necessary to separately attach the lock box and the handle in the work of attaching to the door. Good work will be done to significantly improve the efficiency of on-site work.

Further, if the lock box is mounted upside down, various effects can be achieved such that the door can be opened inside and outside, or right opened and left opened.

In addition, according to the lock device to which the movable latch head is applied, the latch head can be detached from the first angular position by a slight turning operation amount of the handle when the door is opened, and the rest of the latch head can be moved. Automatically rotates and comes out of the strike, so that the latch head has a large amount of protrusion for its size and can handle even when the distance between the door and the fixed column is large, and makes the handle operation easier. , And other effects.

[Brief description of drawings]

FIG. 1 is a perspective view showing an attachment mode of a lock device according to an embodiment of the present invention with respect to a door.

FIG. 2 is an enlarged vertical sectional side view of the lock device shown in FIG.

FIG. 3 is an enlarged front view thereof.

FIG. 4 is an enlarged transverse plan view thereof taken along line IV-IV of FIG.

FIG. 5 is an enlarged plan view showing a cover plate removed.

FIG. 6 is an explanatory plan view showing an operation mode of a handle in the lock device of the present invention attached to a door.

7 (A) to 7 (E) are plan views sequentially explaining the operation of the latch head when the door is opened in the lock device of the present invention.

8 (A) and 8 (B) are plan views sequentially illustrating the operation of the latch head when the door is closed in the lock device of the present invention.

[Explanation of symbols]

 1 Lock Box 10 Door 11 Space Part 2 Handle 21 Handle 3 Control Means 30 Rotating Vertical Axis 4 Returning Means 6 Holder 7 Latch Rod 71 Latch Head 76 Vertical Axis 77 One Slope 78 The Other Slope 8 Retractor P 1st Angular Position Q No. 2 angle position

Claims (3)

[Claims] 1. A space part which is partly or wholly surrounded by the outside of the lock box and which communicates in the lateral direction, and a thickness of a door provided in the space part for attaching the lock box or thinner than the thickness of the lock box. A handle having a thickness, a rotating vertical axis connected to the rear end side of the handle so as to be rotatably supported by the lock box, and a return means that is provided in the lock box and is linked to the rotary vertical axis and returns the handle to the normal position. And a holder fixedly provided in the lock box,
A latch rod slidably supported by the holder and biasing the latch head in a direction to protrude from the lock box, and a retractor that is provided in the lock box and is retracted, is provided in the lock box and is linked to the rotating vertical axis. A door locking device characterized in that 2. The side surface of the lock box is U-shaped or R-shaped,
The door locking device according to claim 1, wherein a handle having a single handle that can be used from both inside and outside of the door is provided in the space portion. 3. The thickness of a space part which is partly or wholly surrounded by the outside of the lock box and communicates in the lateral direction, and the thickness of a door provided in the space part and for mounting the lock box or thinner than the thickness of the lock box. A handle having a thickness, a rotating vertical axis connected to the rear end side of the handle so as to be rotatably supported by the lock box, and a return means that is provided in the lock box and is linked to the rotary vertical axis and returns the handle to the normal position. And a holder fixedly provided in the lock box,
A latch rod slidably supported by the holder and biasing the latch head in a direction to protrude from the lock box, and a retractor that is provided in the lock box and is retracted, is provided in the lock box and is linked to the rotating vertical axis. , The latch head is formed separately from the latch rod, and the latch head is formed into a prismatic shape having a substantially parallelogram in plan view, and the latch head is latched so as to be rotatable around a vertical axis at a substantially central portion thereof. It is supported by a rod, and the rotation position of the latch head is between the rear side of the latch head and the lock box, and one slope on the front side of the latch head is almost parallel to the side plate of the lock box and locked in strike. A control means for restricting the rotation of the latch head at the first angular position while restricting between the first angular position and the second angular position where the other inclined surface is substantially parallel to the side plate of the lock box. Characterized by Of the lock device.