JP3076228B2 - Gate lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gate lock.

[0002]

2. Description of the Related Art In general, a gate lock is composed of a drop bar attached to the gate and a receiving pot installed on a road surface side to receive a lower end portion of the lock rod at the time of locking. And
The drop lock is operated by manually operating a knob or other operating member connected to the drop rod to lift or lower the drop rod to unlock or lock.

[0003] In a gate usually installed on a flat road surface, the distance from the lower end of the gate at the closed position to the road surface is about 30 mm to 50 mm. Therefore, the falling rod in the conventional lock is constituted by one vertical rod, and the stroke from the unlocking position of the operating member to the locking position and the stroke from the unlocking position of the lower end of the falling rod to the locking position. Since the lower end of the drop bar in the unlocked state is close to the lower end of the gate and does not unnecessarily protrude downward, it may hinder the opening and closing movement of the gate, It does not impair the appearance of the door or cause injury to the gate operator.

[0004]

However, the distance from the lower end of the gate located in the closed position to the road surface is 20 or less.
There is a gate installation example having a thickness of 0,300 to 500 mm, and in this case as well, it is demanded that one of the double doors be provided with a lock. When using a single dropping rod having a length enough to allow the lower end of the dropping rod to be received in the receiving pot at the time of locking, when the stroke of the operating member is equal to the conventional dropping rod, a guide for guiding the operating member There is an economic advantage that the same guide means as the conventional lock can be used as the means, but the protruding length of the drop bar from the lower end of the gate in the unlocked state is Δ (500-200)-(50-
30) Since｝ = 470-150 mm, it may cause an obstacle when opening and closing the gate, impair the appearance of the gate, and cause injury to the operator who opens and closes the gate.

In order to reduce the protrusion length of the drop bar in the unlocked state, the stroke of the operating member may be increased. In this case, a new guide means for guiding the operating member is manufactured and attached. Since it is necessary, it causes an increase in cost.

[0006] Thus, the present invention provides a locking and unlocking operation by operating the same stroke as that of a conventional operation device of a lock, even when the distance from the lower end of the gate to the road surface in the closed position is much larger than usual. A lock is made, and
It is an object of the present invention to provide a lock in which, in the unlocked state, the length of the drop bar protruding from the lower end of the gate is reduced so as not to obstruct the opening and closing of the gate, to deteriorate the appearance of the gate, and to cause an injury. .

[0007]

In order to achieve the above object, a lock for a gate according to the present invention comprises a dropper pivotally connected to one end of a lower rod at a lower end of an upper rod.
The upper rod has a length such that the pivoting portion is present near the lower end of the gate when the operating member for locking and unlocking is moved to the unlocking position, and further, the operating member is provided at the lower end of the gate. A locking member is provided for locking the lower rod rotated about the pivot portion in a state in which the lower rod is moved to the unlocking position.

Further, the stroke from the unlocking position to the locking position of the operating member is made equal to the stroke from the unlocking position to the locking position of the operating member in a normal drop lock using one vertical drop bar. Features.

Further, the upper rod is rotatable only between a state where the lower rod extends vertically downward from the lower end of the upper rod and a state where the lower rod is locked by a locking member in a state parallel to the lower end of the gate. It is characterized by being pivoted to.

[0010]

Next, an embodiment of the present invention will be described. 1 is a perspective view showing an example of an attached state of a gate using a lock, FIG. 2 is a front view of the lock in a locked state,
FIG. 3 is a front view of the unlocked state. Lollipop 2
Is constructed by pivotally connecting one end of a lower rod 2b to the lower end of an upper rod 2a. The upper rod 2a has such a length that the pivot portion exists near the lower end of the gate 1 when the operation member 4 is moved to the unlocking position. And
At the lower end of the gate 1, the lower rod 2 b rotated around the pivot 3 with the operating member 4 moved to the unlocked position.
A locking member 9 is provided for locking and detachably.

According to the above configuration, when the lower rod 2b is rotated around the pivot portion 3 toward the lower end of the gate and folded after unlocking, the lower rod 2b is locked by the locking member 9. Therefore, in the unlocked state, the protruding length of the drop bar from the lower end surface of the gate is extremely small. It is desirable that the stroke from the unlocking position of the operating member 4 to the locking position is equal to the stroke from the unlocking position to the locking position of the operating member in a normal drop lock using one vertical drop bar. In such a case, the guide means 5 and 6 of the operation member can use the conventional guide means of a conventional lock having a normal stroke as it is.

Further, the lower rod 2b is
It is desirable to pivotally attach to the upper rod 2a so as to be rotatable only between a state extending vertically downward from the lower end of the gate a and a state locked by the locking member 9 in a state parallel to the lower end of the gate 1. . In this case, when the gate is moved to the closed position and then locked, the lower rod 2 in the unlocked position can be locked.
When the lower rod 2b is disengaged from the locking member 9 and rotated, the lower rod 2b is automatically stopped in the vertical state, and the lower rod is securely inserted into the receiving pot 10 by a simple operation of lowering the operating member 4 at that position. Can be dropped.

[0013]

Next, embodiments of the present invention will be described in detail with reference to the drawings. In each of the figures, reference numeral 1 denotes a gate attached to the gate 13, and the distance H from the lower end surface of the tip of the gate to the road surface G in the closed position is much larger than that of a normal gate, for example, 300 to It is about 500 mm. An upper rod 2a is attached to the front end of the gate so as to be able to move up and down.
Have been. That is, in the present invention, the upper rod 2a and the lower rod 2b constitute the dropper 2 of the lock. The upper rod 2a is usually a vertical frame 1 on the tip side of the gate.
and is guided by a rod guide 2c fixed to a vertical frame.

Reference numeral 4 denotes an operating member for lifting and lowering the drop bar to lock and unlock, and is constituted by a simple knob connected to the side surface of the upper rod 2a. The operating member 4 has a concave portion 4a, in which a flange 6 fixed to the tip of a shaft 5 protruding from a side surface of the upper rod 2a and a peripheral edge formed on an opening surface of the concave portion 4a. A coil spring 7 is mounted therebetween, and the operation member 4 is constantly urged in the direction of the guide member 8. The operation member 4 has a projection 4 projecting rearward in the vertical direction.
b. The guide member 8 has a vertically extending guide groove 8a, and locking grooves 8b and 8c are formed on both side edges forming the guide groove at the upper end and lower end of the guide groove, into which the protrusions 4b are fitted. Have been. Thus, when the operation member 4 is pulled forward by the fingertip and moved upward, and the fingertip is released at the upper limit, the operation member returns to the guide member direction by the coil spring 7, and at the same time, the projection 4b is fitted into the locking groove 8b. Since the locking rod 2 is locked, the drop bar 2 is fixed at the unlocking position P1. When the operating member 4 is pulled again with the fingertip and lowered to the lower limit position and released, the projection 4b is similarly fitted and locked in the locking groove 8c, so that the drop bar 2 is fixed at the locking position P2.

As shown in FIG. 3, when the upper rod 2a is moved to the unlocking position P1 by the operation member 4, the pivot 3 with the lower rod 2b is slightly smaller than the lower end surface of the gate 1. Is set to a length that exists at a lower position.

The lower rod 2b is connected to the upper rod 2a so as to be rotatable around the pivot 3 within a limited range from a horizontal state close to the lower end surface of the gate to a vertical state, and moves beyond the vertical state. It is impossible to rotate. To explain an example of such a connecting structure of the upper and lower drop bars, as shown in FIG. 5, a groove 9 that opens downward and in the left and right direction is formed in the center of the lower end of the upper rod 2a, and the lower rod 2b is formed. A thin portion 10 is formed at the center of one end, and a right-angled portion 10b is provided integrally with a 90-degree circular arc portion 10a on one side of the thin portion 10. The thin portion 10 is inserted into the groove 7, and the pivot 3 And are rotatably connected within a range of 90 degrees.

Further, in the lock according to the present invention, the other end of the folded lower rod 2b is rotatably engaged with the lower end of the gate 1 by rotating the lower rod 2b about the pivot 3. Locking member 11 is attached. Although the structure of the member that can be engaged and disengaged is not limited, in the example shown in FIG. 6, a member formed of an elastic material such as steel in the shape of a tulip is fixed to the lower surface of the gate. ,
The lower rod 2b rotated toward the lower surface of the gate is elastically clamped.

In FIGS. 1 and 2, reference numeral 12 denotes a receiving pot for receiving the lower end of the lower rod 2b when the operating member 4 of the gate moved to the closed position is lowered to the locking position 6b.

When the lower rod 2b of the gate, which is in the closed position in FIG. 2, is disengaged from the locking member 11 and rotated downward as shown by the arrow A in FIG. 3, the lower rod 2b is in the vertical state. Stopped when it becomes That is, when the lower rod 2b is rotated until it is stopped by the upper rod 2a, the lower end of the lower rod automatically exists right above the receiving pot 12. Then, the operating member 4 is operated to move the locking position 6b downward along the guide groove 6 of the guide member 5.
1, the lower rod 2b moves down together with the upper rod 2a, and the lower end of the lower rod 2b is dropped into the receiving pot 12, so that the lock is locked.

When the operating member 4 is moved upward along the guide groove 8a, the upper rod 2a and the upper rod 2b are moved upward in synchronization with each other, and the lower end of the lower rod 2b is separated from the receiving pot 12 and When it is turned horizontally at the upper limit position, the operation member 4 is fixed at the unlock position P1. At this time, since the pivot point 3 between the upper rod and the lower rod is located immediately below the lower end surface of the gate, the lower rod 2b is moved around the pivot 3 in the direction opposite to the arrow A in FIG. When rotated in the part direction, it is locked by the locking member 11 as it is.

Therefore, in the unlocked state, the projecting length of the lower rod 2b from the lower surface of the gate is minimized.
When turning the gate to the open position, the lower rod may cause injury to the gate opening worker's leg, or when the road surface is inclined upward in the gate closing direction, the lower rod itself hits the road surface. There is no obstacle to opening the gate. Further, in the open state of the gate, the drop bar does not impair the appearance of the gate.

It is possible to carry out the present invention if the guide member 8 does not have a length completely equal to the stroke of the ordinary locker. When the guide member 8 has a length completely equal to the stroke of the bar, an existing member can be used as the guide member 8, so that the cost is not increased. In addition, the upper rod uses a dropper in a normal lock, and by connecting a lower rod according to the distance from the lower end of the gate in the closed position to the road surface, from the lower end of the gate in the closed position to the road surface. Can be locked and unlocked by the same operation as a conventional ordinary lock.

[0023]

As described above, according to the present invention, since the lower rod which can be folded is provided, it can be locked even when the distance from the lower end of the gate in the closed position to the road surface is much larger than usual. And when unlocking,
Since the length of the drop bar protruding downward from the lower end of the gate is reduced, the appearance of the door is not impaired by the drop bar or hindering movement of the gate to the open position, and furthermore, the gate opening / closing worker But no injuries.

When the stroke from the unlocking position of the operating member to the locking position is made equal to the stroke from the unlocking position of the operating member to the locking position in a normal drop lock using one vertical dropping bar, As the guide means for the rod and the operating member, the one used in the conventional lock can be used as it is, and the cost can be reduced.

The lower rod is rotatably pivoted to the upper rod only between a state in which the lower rod extends vertically downward from the lower end of the upper rod and a state in which the lower rod is locked by a locking member in a state parallel to the lower end of the gate. In the case of wearing, since the lower rod is rotated until stopped immediately before locking, the lower rod is automatically stopped in the vertical state, so that the positioning of the lower rod with respect to the receiving pot is easy, and the operating member is simply lowered. Thus, locking can be performed reliably.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an attached state of a gate using a lock.

FIG. 2 is a sectional view of a main part in a locked state in a closed position of a gate to which a lock according to the present invention is attached.

FIG. 3 is a sectional view of a main part in an unlocked state.

FIG. 4 is a sectional view taken along line XX of FIG. 2;

FIG. 5 is a cross-sectional view of a main part showing an example of a connection structure between an upper rod and a lower rod and an operation thereof.

6 is a sectional view taken along line YY of FIG. 3, showing an example of a locking member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gate 2a Upper rod 2b Lower rod 3 Shaft 4 Operating member 8 Guide member 11 Locking member 12 Receiving pot

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-58-47875 (JP, A) JP-A 6-20826 (JP, U) JP-A 54-14895 (JP, U) JP-A 58-78 3578 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E05C 1/04 E05B 65/06 E06B 11/06 E05C 1/06

Claims (3)

(57) [Claims] The dropping rod has one end of a lower rod pivotally attached to a lower end of an upper rod, and the upper push rod moves when an operating member for locking / unlocking is moved to an unlocking position. The pivot portion has a length present near the lower end of the gate, and the lower end of the gate is rotated around the pivot portion while the operating member is moved to the unlocking position. A lock for a gate, comprising a locking member for locking and unlocking a lower rod. 2. The stroke of the operating member from the unlocked position to the locked position is equal to the stroke from the unlocked position of the operating member to the locked position in a normal drop lock using one vertical dropping bar. The lock for a gate according to claim 1. 3. The lower rod is rotatable only between a state in which it extends vertically downward from a lower end of the upper rod and a state in which it is locked by a locking member in a state parallel to the lower end of the gate. 3. A gate lock according to claim 1, wherein the lock is pivotally mounted on a rod.