JP4067881B2 - Gate latching device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a latching device that is attached to a gate such as an accordion door that is expanded and contracted to open and close, and particularly relates to a latching device that can be operated smoothly.
[0002]
[Prior art]
The present applicant has previously proposed a novel gate latching device and its locking device with registered model No. 2,126,822.
[0003]
As shown in FIGS. 1 and 2, the latching device includes a latch portion 3 attached to one of the gate 1 and the gate pillar 2 (the gate 1 in the illustrated embodiment), and the horizontal bar 4 attached to the other. It comprises a strike unit 5 provided with (see FIG. 2).
[0004]
As shown in FIG. 2, the latch portion 3 includes a first and second pair of hooks 6 and 7, each having a hook-like portion that engages with the bar 4 of the strike.
[0005]
In addition, the hook-like portions at the tips of the first and second hooks 6 and 7 are arranged so that the tips are opposed to each other so that the outer edge forms a V-shape, and the hook-like portion is formed at the middle portion of the first hook 6. A long hole 9 opened in the first elongated connecting portion 8 that is projected substantially parallel to and integrally with the second connecting portion, and a second connecting portion that projects symmetrically with the first connecting portion 8 at the middle stage of the second hook 7. The pin 12 planted at the tip of 11 is engaged with each other.
[0006]
Furthermore, the first and second hooks 6 and 7 are rotatably supported at the base ends by the support shafts 13 and the elasticity of the hook springs 14 as torsion coil springs wound around the base end portions. The ends of the hook-shaped portions are urged in the direction of closing close to each other.
[0007]
The conventional latching device constructed as described above has a wedge action caused by the engagement between the bar 4 and the hooks 6 and 7 when the gate is closed, as shown by the chain line in FIG. The bar expands and the bar 4 passes through the hook-shaped portion of the hook, and then the hook is closed by the elasticity of the hook spring 14, so that the bar 4 is automatically held by the hook and the gate 1 is locked to the gate post. The
[0008]
[Problems to be solved by the invention]
Of course, the above conventional latching device has been put to practical use with its function reliably. However, for example, a frictional resistance is generated at the sliding contact portion between the long hole 9 and the pin 12, so that it is movable especially after a long period of use. There is still room for improvement, such as the latching device not working unless the movement of the part becomes awkward and the gate is not collided with the gate pillar.
[0009]
Accordingly, an object of the present invention is to improve the mechanism of the conventional latching device described above and to provide a latching device that operates smoothly over a long period of time.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 comprises a latch portion attached to one of the gate and the gate pillar, and a strike portion attached to the other and provided with a horizontal bar. The first and second hooks have a hook-like portion that engages with the strike bar at the tip, and an elongated connecting portion that protrudes integrally from the middle step portion. The base end of each of the two is pivotable and freely movable in the front-rear direction, which is the moving direction of the gate, and the outer edges form a V-shape with the tips of the hooks facing each other. On the other hand, a long hole is formed in one connecting portion of the pair of hooks, and a pin is implanted at the tip of the other connecting portion, and opens and closes in conjunction with each other through engagement between the pin and the long hole. And the hooked part closes Biased in the other, with the rear edge central portion of the connecting portion of the first and second hook by slightly inflating to form an abutment, it arranged the contact portion in the rear of the connecting portion in a normal state It is made to contact | abut to the side edge of a retractor .
[0011]
The invention according to claim 2 includes a latch portion attached to one of the gate and the gate pillar, and a strike portion attached to the other and provided with a horizontal bar, and the hook of the latch portion is used as a bar of the strike portion. In the one that can be detachable, the base end portions of the first and second hooks that integrally project the hook-shaped portion that engages with the strike bar at the tip and the elongated connecting portion at the middle step portion, respectively. Each of them is supported so as to be pivotable and freely movable in the front-rear direction, which is the moving direction of the gate, and the outer edges of the hook-shaped portions are opposed to each other so that the outer edge forms a V-shape. A pin is planted at the tip of one connecting part, the other connecting part faces the pin so that it can be engaged from behind, and the pin is connected to the other connecting part through the engagement between the pin and the other connecting part. And so that it can be driven Biased in a direction in which the hook portion is closed, while with the rear edge central portion of the connecting portion of the first and second hook by slightly inflating to form an abutment, the connecting portion of the contact portion in a normal state It is made to contact | abut to the side edge of the retractor arrange | positioned back .
[0012]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
3 and 4, reference numeral 6 denotes the entire first hook. The first hook 6 has a hook-like portion 15 at the tip (left end in FIG. 4) and an elongated first connecting portion 8 at the middle portion. It is a plate-like body that extends in the direction and protrudes integrally and has a base end (right end) with a long support hole in the front-rear direction (left-right direction) that is the moving direction of the gate.
[0013]
As shown in FIG. 3, the hook-like portion 15 and the first connecting portion 8 are displaced in the thickness direction, but this is a second hook (not shown) formed substantially symmetrically with the first hook shown in FIG. This is to prevent the bowl-shaped portion 15 from being misaligned in the thickness direction when it is polymerized.
[0014]
Further, as shown in FIG. 4, the first connecting portion 8 has the long hole 9 opened along the length direction, similar to the conventional latching device.
[0015]
On the other hand, the second hook 7 (not shown) is formed almost symmetrically with the first hook, and the end of the second connecting portion 11 is slid on the side facing the first connecting portion 8 and the long hole 9. The pin 12 (see FIG. 2) that is movably engaged is also provided in a projecting manner, similar to the conventional latching device.
[0016]
As shown in FIG. 4, the characteristic configuration of the hook connecting portion according to the present invention is that the central portion of the rear end edge of the first connecting portion 8 is slightly swollen to form the contact portion 17. The same applies to the second connecting portion 11.
[0017]
In FIG. 4, reference numeral 18 denotes a spring hook portion. In the illustrated embodiment, the spring hook portion 18 is formed by slightly cutting the outer edge of the hook.
[0018]
First hook 6 which is configured as described above, as shown in FIG. 6, polymerized with a second hook 7, the bearing bore 1 6 in a state of being loosely fitted to the support shaft 13, the lock box 19 Installed.
[0019]
As shown in FIGS. 5 and 6, both the first and second hooks 6 and 7 have their tips protruding outward through an elongated slit 22 opened in the front plate 21 of the lock box. With the engagement, the first and second hooks 6 and 7 are restricted in the thickness direction.
[0020]
And the outer edge of the tip hook-shaped part of the 1st and 2nd hooks 6 and 7 which protruded out of the lock box becomes a horizontal V character shape similarly to the conventional latching device.
[0021]
Further, the first and second hooks 6, 7 are closed in close proximity to each other by the elastic force of the hook spring 14 as a torsion coil spring wound around the support shaft 13. Is biased in the direction.
[0022]
Furthermore, as shown in FIG. 6, a retractor 23 is disposed between the support shafts 13 and 13 at the center of the lock box 19.
[0023]
The retractor 23 is connected to an external operation member (not shown) such as a lever handle through an angular shaft penetrating the upper end of the retractor 23. By operating the external operation member, the lower end portion of the retractor 23 in FIG. For example, it can be rotated clockwise.
[0024]
In the normal state, that is, when no external force acts on the hooks 6 and 7 and the retractor 23, the shape and dimensions of each part are set so that the contact portion 17 of the hook connection portion contacts the side edge of the retractor 17. Yes.
[0025]
In FIG. 6, reference numeral 24 denotes a lock lever, and this lock lever 24 is connected to a lock knob (not shown) protruding outside the lock box via a square shaft (not shown), and by turning this lock knob, For example, the latching device is locked by bringing its tip into contact with the proximal end of the first hook 6.
[0026]
In the latching device according to the embodiment of the invention described in claim 1 configured as described above, the lock lever 24 is in contact with the proximal end portion of the first hook 6 when locked, as shown in FIG. For this reason, the first hook 6 is prevented from rotating counterclockwise, that is, in the direction in which the latch is opened, and the second hook 7 is also prevented from rotating in conjunction with the first hook 6. 7 can not be opened.
[0027]
On the other hand, when the lock knob (not shown) is turned and the lock lever 24 is turned counterclockwise, the tip of the lock lever 24 is separated from the first hook 6 and the hooks 6 and 7 can be expanded as shown in FIG. Therefore, this latching device is unlocked.
[0028]
In the unlocked state shown in FIG. 7, for example, when attention is paid to the first hook 6, the hook spring 14 is urged clockwise by the contact portion 17 of the first connecting portion being in contact with the retractor 23 , Since it is in elastic contact with the retractor 23, the first hook 6 receiving the reaction force is biased forward.
[0029]
Therefore, the support shaft 13 is in contact with the opening edge of the rear end of the support hole 16 (see FIG. 4) of the first hook 6. In other words, the first hook 6 is urged clockwise around the contact point between the contact portion and the retractor 23, and the first hook 6 is shown in FIG. It is locked at an angular position. The same applies to the second hook 7.
[0030]
When the gate is moved in the direction of the gate pillar for closing, as shown in FIG. 8, the bar 4 of the strike portion 5 comes into contact with the V-shaped outer edge of the hook-shaped portion of the hook.
[0031]
Then, depending on the shape of the contact portion 17 in the connecting portion of each hook, in the embodiment shown in FIG. 8, the contact of the second hook 7 by the engagement between the bar 4 and the outer edge of the bowl-shaped portion 15 is achieved. Centering on the contact point between the portion 17 and the retractor 23, the second hook 7 resists the elasticity of the hook spring 14 in the clockwise direction until the opening edge in front of the support hole 16 contacts the support shaft 13. Rotates (is idle).
[0032]
At the same time, the pin 12 of the second hook drives the first hook 6 counterclockwise. In this case, the first hook 6 rotates around its support shaft 13.
[0033]
That is, in the latch device according to the first aspect of the invention, unlike the conventional latch device described above, the hook starts to expand due to the wedge action caused by the engagement between the outer edge of the V-shaped hook and the bar 4. Instead, the hook starts to expand by rotating around the contact point between the contact portion 17 of one hook and the retractor 23. It starts with force and is smooth.
[0034]
Once the expansion of the hooks 6 and 7 is started, the hooks rotate around the support shaft 13 by the wedge action caused by the engagement between the outer edge of the hook 6 (7) and the bar 4, and the bar 4 After passing through the hook-like portion, it is closed by the elasticity of the hook spring 14 and the bar 4 is automatically gripped in the same manner as in the conventional latching device.
[0035]
In order to reopen the gate that is locked to the gate pillar, the retractor 23 is rotated by turning an external operation member such as a lever handle (not shown).
[0036]
Then, as shown in FIG. 9, the retractor 23 rotates, for example, clockwise, and its tip pushes the first connecting portion 8 of the first hook forward, so that the first hook 6 has its support shaft 13. Is rotated counterclockwise by a certain angle.
[0037]
The rotation of the first hook 6 is transmitted to the second hook 7 via the pin 12, and the second hook 7 rotates clockwise around the support shaft 13 by a predetermined angle. As shown in FIG. 9, 15 is opened symmetrically, and the bar 4 that has been gripped is released, so that the gate can be opened.
[0038]
FIG. 10 shows a latching device according to an embodiment of the invention as set forth in claim 2, and this embodiment eliminates the long hole 9 of the first connecting portion, in other words, the first and second connecting portions 8, 11. The first connecting portion 8 is simply formed in the shape of an arm, and this is made to face the pin 12 from the rear.
[0039]
By doing so, there is no sliding contact between the pin 12 and the long hole 9, so that there is an advantage that the frictional resistance is reduced and the operation of the latch becomes smooth.
[0040]
However, in this embodiment, the lock lever 17 is provided on the second hook 7 side. This is because if the lock lever 17 is provided on the first hook side, the second hook is not locked (see FIG. 8).
[0041]
【The invention's effect】
As can be seen from the above description, the present invention is based on the first and second hooks in which the hook-like portion engaging the strike bar is formed at the tip, and the elongated connecting portion is integrally projected at the middle step portion. The end portions are supported so as to be pivotable and freely movable in the front-rear direction, which is the moving direction of the gate, and are coupled so as to rotate in conjunction with each other and urge the hook-shaped portion in a closing direction. In addition, since the retractor is normally brought into contact with the rear end edge of the connecting portion, the contact point between the hook contact portion and the retractor at the initial stage when the outer edge of the bowl-shaped portion comes into contact with the bar. It can be rotated about the center, and the desired effect is achieved that the operation at the beginning of opening the hook becomes very smooth.
[0042]
In addition, in order to obtain the above-described effect, it is only necessary to make the support hole with the support shaft of each hook a long hole, so that various effects such as a very simple configuration can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing an outline of an accordion door.
FIG. 2 is a longitudinal side view showing an example of a conventional latching device in an opened state of a gate.
FIG. 3 is a front view of a first hook according to an embodiment of the present invention.
FIG. 4 is a side view thereof.
FIG. 5 is a front view of a latching device according to one embodiment of the present invention.
FIG. 6 is a partially sectional side view of a latching device according to an embodiment of the present invention as shown in FIG.
FIG. 7 is a partially sectional side view of a latching device according to an embodiment of the invention as set forth in claim 1 in an unlocked state.
FIG. 8 is a partial cross-sectional side view of a latching device according to an embodiment of the present invention, and shows an initial state of contact between a hook and a bar.
FIG. 9 shows a state in which the retractor is operated in a partial sectional side view of the latching device according to one embodiment of the present invention.
FIG. 10 is a partial sectional side view of a latching device according to an embodiment of the invention as set forth in claim 2 and shows a state in which the retractor is operated.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gate 2 Gate pillar 3 Latch part 4 Bar 5 Strike part 6 1st hook 7 2nd hook 8 1st connection part 9 Long hole 11 2nd connection part 12 Pin 13 Support shaft 14 Hook spring 15 Hook-like part 16 Bearing hole 17 Contact 19 Lock box 21 Front plate 22 Slit 23 Retractor 24 Lock lever

Claims (2)

It consists of a latch part that is attached to one of the gate and the pillar and a strike part that is attached to the other and has a horizontal bar, and the hook of the latch part can be detached from the bar of the strike part. The hook-shaped portion that engages with the strike bar, the base end portions of the first and second hooks integrally projecting the elongated connecting portion at the middle step portion, respectively, are rotatable, and the moving direction of the gate The front edge of the hook-shaped part is opposed to each other so that the outer edge forms a V-shape, while a long hole is formed in one connecting part of the pair of hooks, A pin is implanted at the tip of the other connecting portion, and connected to open and close in conjunction with each other through the engagement of the pin and the long hole, and the hook-like portion is biased in the closing direction, On the other hand, the rear end of the connecting portion of the first and second hook To form the contact portion slightly inflated central portion, of the gates, characterized in that so as to abut against the side edges of the retractor an abutment arranged behind the connecting portion in a normal state A latching device. It consists of a latch part attached to one of the gate and the gate pillar and a strike part attached to the other and provided with a horizontal bar, and the hook of the latch part can be detached from the bar of the strike part. The hook-shaped portion that engages with the strike bar, the base end portions of the first and second hooks integrally projecting the elongated connecting portion at the middle step portion, respectively, are rotatable, and the moving direction of the gate The front edge of the hook-shaped part is opposed to each other so that the outer edge forms a V-shape, and a pin is implanted at the front-end part of one connecting part of the pair of hooks. And the other connecting portion faces the pin so that it can be engaged from the rear, and the pin is driven so that the pin can be driven from the other connecting portion through the engagement between the pin and the other connecting portion. Energize in the direction that the part closes, Write, with the rear edge central portion of the connecting portion of the first and second hook by slightly inflating to form an abutment, the side end of the retractor disposed the contact portion in the rear of the connecting portion in a normal state A door latching device characterized by being brought into contact with an edge .

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