JPH0450379Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an auxiliary lock for preventing opening of a sliding door of a building.

[Conventional technology]

As shown in Japanese Patent Publication No. 54-42320, a lock piece is disposed in a case so as to be able to see-saw freely around a shaft between a protruding state protruding from the case and a storage state stored within the case. The lock piece is held in the stored state and the protruding state by frictional force, and when one side of the lock piece with the shaft as a boundary is pressed, it rotates to the stored state, and when the other side is pressed, it rotates to the protruded state. Auxiliary lock.

As shown in Japanese Utility Model Publication No. 56-38127, this is an auxiliary lock in which a lock piece is disposed in a case so as to be able to see-saw around a shaft and is biased and held in a protruding state and a retracted state by a spring.

With these auxiliary locks, by making the lock piece protrude, it can cross the moving surface of the sliding door, and when you try to open the sliding door, the sliding door will come into contact with the lock piece and prevent the sliding door from opening. .

[Problem that the invention attempts to solve]

With this type of auxiliary lock, one side of the lock piece is pushed into the retracted state, and the other side is pushed into the protruded state, so that one side and the other side of the lock piece are about the size of a human finger. It is necessary to form pressing portions each having a corresponding length, and as the lock piece becomes larger, the case also becomes larger, and the entire auxiliary lock becomes larger.

In addition, in the former auxiliary lock, the lock piece is held in the protruding state and the retracted state by the frictional force between the case and the lock piece, so if it is used repeatedly over a long period of time, play may occur between the case and the lock piece. As a result, the holding force is weakened, and the lock piece cannot be reliably held in the protruding state and the retracted state, and may move slightly due to vibration.

In the latter type of auxiliary lock, a spring is used to force the lock piece to rotate between the protruding state and the retracted state, so the lock piece can be held in both states, but the spring itself is configured to displace approximately 90 degrees. In addition, the spring may be damaged prematurely due to excessive force being applied to it, and a large amount of force is required as the spring is deflected and displaced by 90 degrees, and the force required to operate the lock piece between the protruding state and the retracted state is insufficient. It gets bigger and harder to operate.

Therefore, the present invention allows the lock piece to be made smaller, making the entire auxiliary lock more compact, and also allows the lock piece to be reliably held in the protruding state and the retracted state for a long period of time.
Moreover, the object is to provide an auxiliary lock which can be easily operated with a small operating force.

[Means and actions for solving problems]

A lock piece is arranged in the case body so as to be rotatable between a protruding state and a stored state using a spindle, and the lock piece and the case body form an engaging part and an engaged part that can be freely engaged and disengaged in the left-right direction. At the same time, a long hole in the left and right direction into which the support shaft fits is formed in the case body so that the lock piece can be moved left and right together with the support shaft, and the lock piece is rotated to a protruding state between the case body and the lock piece. At the same time, a spring is attached which biases the engaged part and moves left and right in the direction of engagement between the engaged part and the engaged part, and a finger rest is formed on the outer surface of the lock piece. By engaging the lock and moving the lock piece, it can be rotated to the protruding state, and by pushing it in, it can be rotated to the stored state.

〔Example〕

Hereinafter, one embodiment of this invention will be described in detail with reference to the accompanying drawings. Figures 5 and 6 are a front view and a cross-sectional view showing a sliding window in which an auxiliary lock according to this invention is attached to a sliding door, and show an upper frame a ₁ , a lower frame a ₂ , and a vertical frame a ₃ on the left and right sides. , a ₃ in a rectangular shape, an upper stile b ₁ , a lower stile b ₂ , left and right vertical frames b ₃ , b ₃ are framed in a rectangular shape, and the left and right vertical frames b ₃ A _pair of sliding doors B and B are constructed by constructing a middle frame b ₄ between the sliding doors B and B on the outside of the room, and the sliding door B _and B are attached to the lower stile of the sliding door B on the outside of the room.
An auxiliary lock C according to this invention is attached to prevent the lock B from being opened.

As shown in FIG. 4, the auxiliary lock C includes a box-shaped case body 10 with an open front, a lock piece 20 mounted inside the case body 10, and a lock piece 20 for releasing and holding the lock piece 20. Spring 30 and lock piece 20
It is composed of a support shaft 40 that supports the.

Among these, the case body 10 fixes the auxiliary lock C to the horizontal stile such as the upper stile b ₁ , the lower stile b ₂ or the middle stile b ₄ of the sliding door B, and also attaches the lock piece 20 when the auxiliary lock C is not needed. It serves to hold it flat on the side of the stile. This case body 10 is made by integrally molding a rectangular cylindrical base 10a and a mounting plate 10b extending from the front and side surfaces of the base 10a.
A lock piece 20 (described later) is attached to the upper and lower surfaces of the case body 1.
A pair of elongated holes 11 for moving 0 in the left and right direction,
11 is bored in the left-right direction, and an opening 12 penetrating from the front to the rear is formed approximately in the center of the base 10a and the mounting plate 10b. A pair of engaged parts 1
3 and 13 protrude at intervals in the vertical direction, and an escape opening 14 for a spring 30, which will be described later, is formed between the pair of engaged parts 13 and 13. As shown in FIG. 1, a spring 30 mounting groove 17 is formed on the rear side of the opening 12, and a mounting hole 16 is formed on one side in the left and right direction of the mounting plate 10b.
is bored, and furthermore, a base 10a and a mounting plate 10 are provided.
A slit groove-shaped sandwiching gap 15 is formed on one side of the outer surface of the boundary with b.

The lock piece 20 has a thick rectangular main body 20a.
A pair of upper and lower horizontal pieces 20b, 2 are vertically opposed to each other and protrude in the horizontal direction from the rear side of the main body 20a.
0b is integrally molded, and the front surface of the main body 20a is formed with a finger hook 21 for hooking a finger, etc., and a pair of horizontal pieces 20b, 20b have inclined cam surfaces 22, 22. Engagement portions 23, 23 are formed at the ends of the cam surfaces 22, 22 near the main body 20a, respectively, and spindle holes 24, 24 penetrating vertically are bored in the horizontal pieces 20b, 20b. . At the boundary between the back surface of the main body 20a and the horizontal pieces 20b, 20b, there is a recess 2 continuous to the engaging parts 23, 23.
5 is formed. This recess 25 is for preventing the lock piece 20 from interfering with the case body 10 when the lock piece 20 slides in the left-right direction within the case body 10.

The case body 10 and the lock piece 20 are made of a strong and weather-resistant synthetic resin, such as polyamide, polyester, or polypropylene.
Made from resin materials such as polyacetal and polyurethane, or synthetic rubber such as butadiene,
It is integrally molded from a material such as chloroprene using a molding process such as injection molding.

The spring 30 consists of a tubular portion 32 wound into a coil shape and a pair of hook-shaped pressing portions 31, 31 continuous with both ends of the tubular portion 32.

However, when assembling this auxiliary lock C,
First, with the spring 30 disposed between the upper and lower horizontal pieces 20b, 20b of the lock piece 20, the lock piece 20 is inserted into the opening 12 of the case body 10, and one pressing part provided at one end of the spring 30 is inserted. 31 into the spring mounting groove 17 of the case body 10, and the other pressing portion 31 provided at the other end is brought into contact with the back surface of the body 20a of the lock piece 20.

The elongated holes 11, 11 of the case body 10, the spindle holes 24, 24 of the lock piece 20, and the spring 30
The tubular portions 32 are arranged so as to be located approximately on the same axis, and these elongated holes 11, 11 and spindle holes 24, 2
4, and the support shaft 40 is inserted into the tubular portion 32, and the lock piece 20 is press-fitted into the support shaft holes 24, 24 of the support shaft 40.
By integrating the support shaft 40 with the support shaft 40, and by loosely fitting both ends of the support shaft 40 into the elongated holes 11, 11 of the case body 10, the lock piece 20 can be in a protruding state and a stored state in the case body 10. The spring 3
The engaging portion 23 is urged to rotate in the projecting state by the urging force in the direction of the arrow a of 0, and the engaging portion 23 is urged to move in the direction of engaging the engaged portion 13 by the repulsive force of the spring 30 in the direction of the arrow b. It is something. That is, the engaging portion 23 and the engaged portion 13 can be freely engaged and disengaged in the left-right direction.

Next, as an example of attaching this auxiliary lock C to the side stile of the sliding door B, we will explain it using the lower stile _b2 of the sliding door B shown in Fig. 4. Normally, in the state shown in Fig. 1, the case is inserted from the opening 1 of the lower stile _b2 . Insert the base 10a of the main body 10 into the lower stile _b2 ,
When the back surface of the mounting plate 10b is brought into contact with the outer surface of the lower stile _b2 , and then the entire case body 10 is moved in the left-right direction while in contact, a bump is formed at the boundary between the back surface of the mounting plate 10b and the base 10a. sandwiched gap 15
By sandwiching the side edge 2 of the opening ₁ of the lower stile b2 and inserting the fixing tool 3 into the mounting hole 16 provided in the mounting plate 10b, the auxiliary lock C can be reliably attached to the lower stile in a fixed state.

[Effect]

Next, the operation of the auxiliary lock C according to this invention will be described in detail. FIG. 1 is a diagram showing the stored state in which the lock piece 20 is stored flat in the case body 10, that is, the unlocked state. , At this time, the engaging part 2 of the lock piece 20
3 and 23 are engaged parts 13 and 13 of the case body 10
When the spring 30 is engaged with the lock piece 2
0 is prevented from rotating to the protruding state.

To change the lock piece 20 from this state to a protruding state, that is, a locked state, in which the lock piece 20 protrudes from the case body 10,
As shown in FIG. 2, insert your finger into the finger hook 21 of the lock piece 20 and apply a force in the direction of arrow c against the repulsive force of the spring 30 in the direction of arrow b.

As a result, the upper and lower ends of the support shaft 40 integrated with the lock piece 20 move along the elongated holes 11, 11 of the case body 10 together with the lock piece 20 in the direction of arrow c, and as a result, the engaging portion of the lock piece 20 23, 23 and case body 1
The engaged portions 13, 13 of No. 0 are disengaged, and the lock piece 20 protrudes from the case body 10 due to the biasing force of the spring 30 in the direction of arrow a. At the same time, the upper and lower ends of the support shaft 40 are pushed into the elongated hole 1 of the case body 10 by the repulsive force of the spring 30 as indicated by the arrow c.
1 and 11 along with the lock piece 20, and as shown in FIG.
6 comes into contact with the locking wall 18 of the case body 10, and the lock piece 20 is maintained in an inclined protruding state. As shown in FIG. 6, in this state, the lock piece 20 protrudes into the moving path of the sliding door B on the indoor side, and even if the sliding door B is opened, the end face of the sliding door B comes into contact with the release prevention surface 27 of the lock piece 20. This prevents the sliding door B from opening any further.

Next, in order to unlock the auxiliary lock C that has become locked as described above, in the state shown in FIG. 3,
The main body 20a on the release prevention surface 27 side of the lock piece 20 is moved in the direction of arrow d against the biasing force of the spring 30 in the direction of arrow a.
Just push it in the direction. By this operation, lock piece 2
The inclined cam surfaces 22, 22 of 0 are the case body 10.
When the cam surfaces 22, 22 are pushed in further, the cam surfaces 22, 22 move toward the back of the opening 12 while abutting the engaged parts 13, 13. At this time, at the same time, the upper and lower ends of the support shaft 40 integrated with the lock piece 20 move along the long holes 11, 11 of the case body 10 together with the lock piece 20 in the direction of arrow c. and,
An engaging portion 23 formed in front of the cam surfaces 22, 22,
23 gets over the engaged parts 13, 13 of the case body 10, the lock piece 20 moves in the direction of arrow b due to the repulsive force of the spring 30 in the direction of arrow b, and the engaged parts 23, 23 move over the engaged parts 13, 13 of the case body 10. Engaged part 1 of
3 and 13 are firmly engaged. Thereby, the lock piece 20 is held in a stored state where it is flatly stored in the case body 10, that is, in an unlocked state.

[Effect of idea]

By hooking your finger on the finger hook 21 of the lock piece 20 and pushing the lock piece 20 against the spring 30, the engaging part 23 is moved to the engaged part 1.
3, the lock piece 20 is rotated to a protruding state by the spring 30, and the protruding lock piece 20 can be pushed into the case body 10 and rotated to be in a stored state. Moreover, the lock piece 20 can be moved in the direction in which the engaging part 23 and the engaged part 13 are engaged, and can be maintained in the stored state.

Therefore, since the lock piece 20 only needs to be pressed with a finger when changing from the protruding state to the retracted state, it is sufficient that the lock piece 20 has a shape that has a part to be pressed with a finger on one side with the support shaft 40 as a boundary. Since it can be made small, the case main body 10 can also be made small and the entire auxiliary lock can be made compact.

In addition, the lock piece 20 can be held in the protruding state by the spring 30, and the lock piece 20 can be held in the retracted state by the engaging part between the engaging part 23 and the engaged part 24, and it can be moved slightly by vibration or the like. The lock piece 20 can be reliably held in the housed state and the protruded state for a long period of time without any trouble.

In addition, since the spring 30 itself does not displace much, unreasonable force is not applied to the spring 30 and it does not break early, and the lock piece 20 can be operated between the protruding state and the retracted state with a small force. It becomes easier to operate.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the auxiliary lock with the lock piece in the stored state, FIG. 2, and FIG.
The figure is a cross-sectional view of the auxiliary lock for explaining the operation when the lock piece is in the protruding state, Figure 4 is an exploded perspective view of the auxiliary lock, and Figure 5 is a sliding window with the auxiliary lock according to the present invention installed. The front view and FIG. 6 are cross-sectional views. 10 is a case body, 11 is a long hole, 13 is an engaged part, 20 is a lock piece, 21 is a finger hook part, 23 is an engaging part,
30 is a spring, 40 is a support shaft.

Claims (1)

[Scope of utility model registration request] A lock piece 20 is rotatably disposed in a case body 10 with an open front surface by a support shaft 40 between a stored state stored in the case body 10 and a protruded state protruded from the case body 10. At the same time, the case body 10 and the lock piece 20 are formed with an engaged part 13 and an engaging part 23 that can be freely engaged and disengaged in the left-right direction and hold the lock piece 20 in a stored state, and the case body 10 is provided with the support shaft 40. A long hole 11 in the left and right direction is formed into which the lock piece 20 is inserted, so that the lock piece 20 can be moved in the left and right direction between a position where the engaging part 23 and the engaged part 13 engage and a position where they disengage. At the same time, the case body 10 and the lock piece 20 are rotated and urged to protrude, and the lock piece 20 is rotated in the left-right direction toward the position where the engaging part 23 and the engaged part 13 are engaged. a spring 30 that biases
An auxiliary lock characterized in that a finger hook 21 is formed on the front surface of the lock piece 20.