JPH04129281U - lock - Google Patents

Abstract

(57) [Summary] [Purpose] To smoothly release the prevention of latch head reversal. [Structure] In a lock with an inverted retraction type latch head, the ends of both swing plates 22 and 23, which overlap the top and bottom ends of the slider 5 and which are opposite to each other, are rotatably attached. is provided with a synchronized rotation mechanism 25, and provided with projecting pieces 26 and 27 that protrude rearward from both rocking plates,
Further, a tongue piece 28 for preventing the latch head from reversing is provided on both swing plates in circumscription on the distal end side of the latch head, and when operated, both projecting pieces are pushed open so that the tongue piece can be removed from the latch head.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a lock in which the latch head is reversed and retracted when operated. It is.

0002

[Conventional technology]

When the lever or grip ball is operated to open the door, the lever or handle is pressed at the same time. Since the grip ball is pulled, the latch head will be pressed against the edge of the through hole of the receiving metal fitting. Ru.

0003 This prevents the latch head from sliding and allows the door to open smoothly. This was particularly noticeable when opening the door in a hurry.

0004 Therefore, as shown in Japanese Utility Model Publication No. 62-89475, it is not possible to operate from one side of the door. Push the plate and pull the operating plate from the remaining side of the door until the wing pieces engage with the protruding body. When the rotating body is rotated, the reversal prevention of the reversal prevention mechanism is released via the interlocking mechanism. As a result, the latch will be latched due to the force in the opening direction that acts on the door as the operation panel is operated. As the head flips over, the latch head is pushed back into the lockbox to smoothly open the door. , and is designed to open reliably.

[0005]

[Problem that the idea aims to solve]

The slide frame is rotated by rotating the rotary body with the protruding body and the wing pieces that are engaged by the operation plate. A reversal prevention mechanism is configured by pulling back the slide frame through the interlocking mechanism on the upper edge. Since the protrusion is made to escape from the recessed part, the pullback force of the slide frame is reduced. is shifted toward the upper edge of the slide frame. Therefore, a pulling force and a rotational force act on the slide frame, generating a prying force. There was a problem that the sliding frame could not be pulled back smoothly due to the

[0006] Therefore, the challenge of this invention was to smoothly transmit the force of the operation panel to the reversal prevention mechanism. The aim is to provide a lock that does this.

[0007]

[Means to solve the problem]

In order to solve the above problem, this idea was installed in a position that sandwiched the double-sided lock box of the door. Push one operation plate of the plate that is located and pull the other operation plate to release the slide inside the lock box. At the same time as releasing the reversal prevention of the reversal prevention mechanism of the latch head provided at the tip of the rider. The latch head must be reversed against the release force acting on the door against the return force. In the lock that is recessed together with the slider, the top and bottom of the slider are opposite to each other. Attach the ends of both rocking plates with their tips overlapped so that they can rotate freely, and A synchronized rotation mechanism is provided on both rocking plates, and the two operating plates are directed upward and downward into the lock box. protrudes rearward from both rocking plates so as to be positioned above and below the protruding body. Further, a protruding piece is provided that extends from the tips of both of the rocking plates and extends to the end of the latch head. A tongue piece for preventing reversal of the latch head is provided circumscribing the end portion, and at least one of the latch head The rocking plate has a configuration that allows return rotation in the direction of pulling the protruding object. It is.

[0008]

[Effect]

Push the control panel from one side of the door, and pull the control panel from the other side of the door. , the protruding body on one side of the operating plate moves upward, and the protruding body on the other side of the operating plate moves downward. Since either one of the protrusions is pushed back in the direction of separation, the tuning mechanism Both protrusions rotate in the direction of opening. Therefore, the tongue piece is removed from the latch head while rotating both rocking plates.

[0009] When the latch head with the tongue piece removed is turned over by the force acting on the door in the opening direction, At the same time, the latch head is recessed into the lock box.

0010

【Example】

In the figure, 1 is a lock box that is fitted inward from the vertical stile surface of door A. A through window 3 is provided in the front wall 2 of the lock box 1.

[0011] In addition, inside the lock box 1, the tip is aligned with the through window 3, and the front wall is secured by a spring 4. A slider 5 that pushes out toward 2 is incorporated. The slider 5 has a vertical plate 6 and a vertical plate connected from the upper and lower edges of the vertical plate 6. 6 and horizontal plates 7 facing each other at the upper and lower sides of one side, and the terminal catch 8 of both horizontal plates 7 and the lock. A spring 4 is interposed between the box 1 and the rear wall 9.

0012 Reference numeral 9 denotes a latch head that penetrates through the window 3, and this latch head 9 is attached to the slider 5. The end piece is inserted between the horizontal plates 7, and the end piece is inserted into the upper flat plate 7 via the vertical pin 10. The two corners are attached and connected in a freely intervening manner.

[0013] Reference numeral 11 denotes a spring that provides the latch head 9 with return rotation ability.

[0014] Also, on both sides of the door A, there are a pair of plates 12, 12' facing each other with the lock box 1 in between. is installed. The above-mentioned plates 12, 12' are attached as shown in FIG. Screw the screw shaft 14 inserted into the through hole 13 of ' into the screw hole 15 of the outdoor side plate 12. Thus, both plates 12, 12' are drawn toward each other.

[0015] Further, a recessed portion 16 recessed inwardly from the surfaces of both plates 12, 12' is provided. At the same time, in each recessed part 16, one side is for tension and the other side is for push. When released, the springs 17 are fixed so that they do not protrude from the surfaces of the plates 12 and 12'. The operating plates 18, 18', which are rotated to return and are swingably supported by pins 19, It is provided.

[0016] Also, on the back side of both operation plates 18, 18', there are two front and rear locks that fit into the lock box 1. Projections 20, 21 are provided.

[0017] Further, the slider 5 has two swinging units with opposing tips stacked on one side on the top and bottom. The ends of the movable plates 22 and 23 are rotatably supported via pins 24, and both The swing plates 22 and 23 have a synchronization mechanism in which when either one rotates, both rotate in synchrony. A mechanism 25 is provided. Although the above-mentioned tuning mechanism 25 was constructed by fitting a hole and a pin, other than the above-mentioned You may also synchronize using the following method.

[0018] In addition, the rocking plates 22 and 23 are provided with two rows of upper and lower rows so as to sandwich both the protrusions 20 and 21. Projecting pieces 26 and 27 are provided.

[0019] Furthermore, latch heads 9 are provided at the ends of both swing plates 22 and 23, respectively, protruding forward. A tongue piece 28 for preventing the latch head 9 from reversing is provided circumscribing the distal end of the latch head 9. Ru.

[0020] 29 is provided with return rotation ability on both swing plates 22 and 23 so as to draw both protrusions 26 and 27 together. It is a spring that provides.

[0021] The lock according to this invention has the above structure, and from one side of door A (outside), Pull the operation panel 18 and press the operation panel 18' from the remaining side of door A (inside the room). By the contact between the protruding piece 26 and the protruding body 20 or the contact between the protruding piece 27 and the protruding body 21, Since either one of the protruding pieces 26 and 27 is pushed back, both protruding pieces 26 are pushed back by the synchronizing mechanism 25. , 27 rotate in the opening direction.

[0022] Therefore, while rotating both the rocking plates 22 and 23 that are integrated with the projecting pieces 26 and 27, the Both tongues 28, 28 are removed from the end step 31 of the switch head 9.

[0023] The latch head 9 from which the tongue piece 28 has come off is reacted by the force acting on the door A in the opening direction. At the same time, it is inverted and immersed into the lock box 1.

[0024] As the latch head 9 is inverted and retracted, the slider 5 is pushed back.

[0025]

【effect】

As described above, according to the lock according to this invention, the operation panel is not pushed or pulled. Therefore, the synchronization mechanism pushes both protrusions back in the direction of opening and rotates both rocking plates. The tongue piece for preventing the latch head from reversing is removed from the latch head. This will ensure that the tongue piece comes off and the latch head is smoothly and reliably inverted. I can do that.

[Brief explanation of drawings]

[Figure 1] Vertical side view of the lock according to this invention

[Figure 2] Transverse plan view of the same as above

[Figure 3] Longitudinal rear view

[Figure 4] Vertical side view with the latch head inverted and recessed

[Figure 5] Transverse plan view of the same as above

[Explanation of symbols]

1 Lock box 2 Front wall 3 Through window 4 spring 5 Slider 9 Latch head 10 pins 11 Spring 12 plate 18, 19 Operation board 20, 21 Projection 22, 23 Rocking plate 25 Tuning mechanism 26, 27 Projection piece 28 Tongue piece 29 Spring 31 Stepped section

Claims (1)

[Scope of utility model registration request] [Claim 1] When one operation plate of the plate attached to the door sandwiching the double-sided lock box is pushed and the other operation plate is pulled, the reversal prevention mechanism of the latch head provided at the tip of the slider inside the lock box is activated. In the lock, the reversal prevention is released and the latch head is retracted along with the slider while resisting the force in the release direction acting on the door to restore the door, and the opposite end sides of the slider are overlapped above and below. The ends of both rocking plates are rotatably attached, and a synchronized rotation mechanism is provided on both rocking plates, and the two rocking plates are located above and below across the protruding bodies that protrude upward and downward into the lock box from both the operating plates. protrusions projecting rearward from both rocking plates so as to prevent the latch head from reversing; furthermore, a tongue piece for preventing reversal of the latch head that extends from the tips of the rocking plates and circumscribes the distal end of the latch head; . A lock, characterized in that at least one of the rocking plates is provided with a return rotation property in the direction of drawing the protruding body.