Counter locking structure of side hung door lock

Abstract

The utility model relates to the technical field of side-hung door locks, in particular to a back locking structure of a side-hung door lock, which comprises an inner handle and an outer handle which are arranged on the inner side and the outer side of a side-hung door, and the outer handle comprises a sliding plate capable of sliding linearly, a first wheel disc fixedly connected to a square shaft and a second wheel disc used for driving the first wheel disc to rotate unidirectionally. The inner handle comprises a square shaft fixedly connected to the first wheel disc, a shifting block used for shifting the sliding plate to slide linearly is arranged on the outer side of the first wheel disc in a protruding mode, and the sliding plate is provided with an abutting portion abutting against the second wheel disc and abuts against or breaks away from the second wheel disc along with sliding of the sliding plate. The inner handle is lifted up and pressed down to realize back locking and automatic unlocking of the side hung door lock, so that the side hung door lock is convenient to operate and use.

Description

Technical Field

[0001] The utility model relates to the technical field of swing door locks, in particular to a reverse locking structure of a swing door lock. Background Art

[0002] A swing door is named because its door leaf opens and closes along a certain horizontal direction. A swing door lock is one of the essential accessories for a swing door and is mainly used to lock the door leaf. The door lock includes two handles, one indoor and one outdoor, which are connected by a square shaft. The door lock is opened by pressing down on any one of the handles. Reference publication (announcement) number: CN211776508U is a new type of swing door lock. In order to improve safety, an anti-lock function is also provided on the door lock. The push piece on the indoor side drives the limit piece so that the limit piece is against the rotation path of the lock core, thereby jamming the handle on the outdoor side and preventing it from being directly pressed down to unlock it, thereby preventing outdoor personnel from mistakenly entering the room. However, such a locking structure is complicated to operate in actual applications. Utility Model Content

[0003] The utility model provides a reverse locking structure of a swing door lock to achieve the purpose of easy operation and use.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-locking structure of a swing door lock, comprising an inner handle and an outer handle arranged on both sides of the swing door inside and outside, the outer handle comprising a slide plate that can slide linearly, a first wheel plate fixedly connected to a square shaft, and a second wheel plate for driving the first wheel plate to rotate unidirectionally, the inner handle comprising a square shaft fixedly connected to the first wheel plate, a shift block for driving the slide plate to slide linearly is protruding from the outer side of the first wheel plate, the slide plate is provided with an abutment portion that abuts against the second wheel plate, and abuts against or detaches from the second wheel plate as the slide plate slides.

[0005] Furthermore, the inner handle includes a first handle and a first base, and one end of the square shaft is fixedly connected to the first handle.

[0006] Furthermore, the outer handle includes a second handle and a second base, the first wheel disc, the second wheel disc and the slide plate are all arranged in the second base, the slide plate is linearly slidably connected to the second base, and the second wheel disc is fixedly connected to the second handle.

[0007] Furthermore, an opening is provided on a side surface of the second base, and a tool insertion groove is provided on the slide plate, and the tool insertion groove corresponds to the opening.

[0008] Furthermore, the slide plate slides up and down on the first wheel plate and the second wheel plate, and a channel is provided in the middle, a groove is provided on the right side of the channel, the shift block is provided in the groove, the abutment is provided at the lower part of the channel, and a protruding block abutting against the abutment is provided on the lower side of the second wheel plate.

[0009] Furthermore, a circular disc is arranged in the middle of one side of the second wheel disc facing the first wheel disc, an arc segment a is arranged on the outer side of the circular disc, an arc segment b is arranged on one side of the first wheel disc facing the second wheel disc, and one end of the arc segment a is butted against one end of the arc segment b.

[0010] Furthermore, it also includes a locking tongue mechanism arranged between the inner handle and the outer handle, and the square shaft passes through the locking tongue mechanism.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the first wheel disc is driven to rotate through the square shaft by lifting the inner handle, and the slide plate is pushed upward by the shift block on the first wheel disc, so that the slide plate abuts against the second wheel disc, thereby making the second wheel disc unable to rotate, thereby realizing reverse locking; the inner handle is pressed downward to make the first wheel disc rotate in the opposite direction, and the slide plate is pushed downward by the shift block, so that the slide plate is separated from the second wheel disc, so that the second wheel disc can rotate normally, and automatically unlocks when unlocking, and reverse locking and automatic unlocking of the swing door lock are realized by lifting and pressing down the inner handle, so as to facilitate operation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional diagram of the utility model.

[0013] Figure 2 It is an exploded view of the utility model.

[0014] Figure 3 It is a three-dimensional diagram of the Chinese and foreign handles of the utility model.

[0015] Figure 4 It is a schematic diagram of the structure of the first wheel disc, the second wheel disc and the slide plate in the utility model.

[0016] Figure 5 It is a schematic diagram of the connection of the first wheel disc and the second wheel disc in the present invention at a front angle.

[0017] Figure 6 It is a schematic diagram of the connection of the back angles of the first wheel disc and the second wheel disc in the present invention.

[0018] In the figure: inner handle 1, outer handle 2, locking tongue mechanism 3, square shaft 11, slide plate 12, first wheel disc 13, second wheel disc 14, first handle 101, second handle 102, first base 111, second base 112, channel 120, abutment portion 121, shift block 130, arc segment b 133, protruding block 140, disc 144, arc segment a 145, slide groove 200, mounting plate 201, opening 222, groove 1200, tool insertion groove 2220. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] As shown in the accompanying drawings, the utility model provides an anti-locking structure of a swing door lock, comprising an inner handle 1 and an outer handle 2 arranged on both sides of the swing door, the inner handle 1 and the outer handle 2 being symmetrically arranged on both sides of the swing door, the outer handle 2 comprising a slide plate 12 which can slide linearly, a first wheel disc 13 fixedly connected to a square shaft 11, and a second wheel disc 14 for driving the first wheel disc 13 to rotate unidirectionally, the inner handle 1 comprising a square shaft 11 fixedly connected to the first wheel disc 13, it should be noted that the square shaft 11, the first wheel disc 13 and the second wheel disc 14 are fixed on the same axis, the slide plate 12 can be relatively moved relative to the first wheel disc 13 and The second wheel disc 14 slides up and down, and the second wheel disc 14 can only drive the first wheel disc 13 to rotate together in one rotation direction, that is, the direction of downward swinging can drive the first wheel disc 13 to be pressed down together. A shift block 130 is protrudingly provided on the outer side of the first wheel disc 13 for shifting the slide plate 12 to slide linearly. The shift block 130 is protrudingly provided on the left or right side of the first wheel disc 13. The slide plate 12 is provided with an abutting portion 121 abutting against the second wheel disc 14. The abutting portion 121 is used to abut on the rotation path of the second wheel disc 14. The abutting portion 121 can abut or detach from the second wheel disc 14 as the slide plate 12 slides. It also includes a lock tongue mechanism 3 arranged between the inner handle 1 and the outer handle 2, which belongs to the existing swing door lock structure. It should be noted that one end of the square shaft 11 is fixed to the inner handle 1, and the inner handle 1 is passed through the lock tongue mechanism 3 through the square shaft 11 and then extends to the inside of the outer handle 2, and is connected to the first wheel disc 13. The square shaft 11 can link the lock tongue to retract into the lock tongue mechanism 3. A square hole is provided in the middle of the first wheel disc 13 for the square shaft 11 to penetrate. The end of the square shaft 11 passes through the first wheel disc 13 and abuts against the second wheel disc 14, but the square shaft 11 is not connected to the second wheel disc 14. When the inner handle 1 rotates the square shaft 11, the square shaft 11 rotates on the second wheel disc 14.

[0021] The utility model discloses a reverse locking structure of a swing door lock, the initial state of which is as follows Figure 4 As shown, by lifting the first handle 101 of the inner handle 1, the square shaft 11 drives the first wheel disc 13 connected to its end to rotate together, and the sliding plate 12 is pushed up by the shifting block 130 on the first wheel disc 13, so that the sliding plate 12 abuts on the rotation path of the second wheel disc 14, thereby making it impossible for the second wheel disc 14 to be pressed down and rotated, which means that people outside the room cannot open the door by pressing down the outer handle 2, and the door is locked. Figure 3The state shown, in which the inner door handle 1 is pressed down. The square shaft 11 connected to the inner door handle 1 drives the locking tongue to retract into the locking tongue mechanism 3 to unlock the door. At the same time, the square shaft 11 drives the first wheel disc 13 to rotate in the reverse direction. The slider 12 is pushed down by the block 130 on the first wheel disc 13, so that the slider 12 is disengaged from the rotation path of the second wheel disc 14, enabling the second wheel disc 14 to rotate normally. When the square shaft 11 rotates to retract the locking tongue to unlock the door, automatic unlocking is achieved. The anti-lock and automatic unlocking of the side-hung door lock are realized by lifting and pressing the inner door handle 1, which is convenient for operation and use. There is no need to set an additional anti-lock button, making the surface of the side-hung door lock more concise and beautiful. Moreover, this anti-lock structure can be realized by using a common square shaft 11 with the first wheel disc 13 and the second wheel disc 14 both arranged inside the outer door handle 2. By using an existing common square shaft 11 passing through the locking tongue mechanism 3 and connected to the first wheel disc 13 inside the outer door handle 2, the production cost is saved more.

[0022] It should be noted that for a general side-hung door lock, the handle is in a horizontal state. By pressing down and rotating the handle, the locking tongue retracts to achieve the purpose of opening the door body. Lifting and pressing refer to the actions of the human hand on the handle, which are common expressions in the industry and can be regarded as the meaning of rotating the handle clockwise and counterclockwise.

[0023] In this embodiment, the inner door handle 1 includes a first handle 101 and a first base 111. The first handle 101 is rotatably connected to the first base 111, and one end of the square shaft 11 is fixedly connected to the first handle 101. The outer door handle 2 includes a second handle 102 and a second base 112. The second handle 102 is rotatably connected to the second base 112. The first disk 13, the second disk 14, and the slide plate 12 are all arranged inside the second base 112. The slide plate 12 is linearly slidably connected to the second base 112. The second disk 14 is fixedly connected to the second handle 102. There are also parts such as a torsion spring, which is used to help the handle return automatically. That is, when the first handle 101 or the second handle 102 is swung, the torsion spring inside will help it return automatically after the handle loses pressure. This belongs to the basic structure of the existing door handle for a swing door. One end of the square shaft 11 is fixedly connected to the first handle 101, and the other end is fixedly connected to the first disk 13, so that the first handle 101 can directly drive the square shaft 11 and the first disk 13 to rotate synchronously, and then the square shaft 11 can drive the lock tongue to retract into the lock tongue mechanism 3. In addition, both the first disk 13 and the second disk 14 are arranged inside the second base 112, and at the same time, the second disk 14 is engaged with the first disk 13, so that the second disk 14 can drive the first disk 13 to rotate. The second disk 14 is fixedly installed on the second handle 102 at the same time. That is, by pressing down the second handle 102, the first disk 13 is driven to rotate by the second disk 14, and then the square shaft 11 rotates accordingly. There is a chute 200 inside the second base 112, and a mounting plate 201 is arranged at the opening of the chute 200 to limit the slide plate 12, so that the slide plate 12 can only slide linearly up and down inside the second base 112. At the same time, the mounting plate 201 can also cooperate with the second base 112 to clamp the first disk 13 and the second disk 14 to ensure the engagement of the first disk 13 and the second disk 14, and the two of the square shafts are disassembled.

[0024] In this embodiment, an opening 222 is provided on the side of the second base 112. The slide plate 12 is provided with a tool insertion slot 2220, and the tool insertion slot 2220 corresponds to the opening 222, so that outdoor personnel can borrow a tool to insert it into the tool insertion slot 2220 through the opening 222 and drag the slide plate 12 to slide up and down, so as to achieve unlocking outdoors, providing an emergency means for safe rescue of this door lock.

[0025] Such as Figure 3-4As shown, the slide plate 12 slides up and down on the first wheel plate 13 and the second wheel plate 14, and a channel 120 is provided in the middle, a U-shaped block is provided on the right side of the channel 120, and the tool insertion groove 2220 can be preferably provided on the side of the U-shaped block facing the opening 222, the U-shaped block has a groove 1200 with a notch facing the first wheel plate 13, the shift block 130 is provided in the groove 1200, and can abut against the groove wall of the groove 1200, the abutting portion 121 is provided at the lower part of the channel 120, and a protruding block 140 abutting against the abutting portion 121 is provided at the lower side of the second wheel plate 14, the protruding block 140 and the shift block 130 are distributed at 90 degrees to the center of the first wheel plate 13, because the slide plate 12 belongs to the upper and lower The sliding groove 1200 needs to be arranged on one side of the horizontal direction of the slide plate 12, that is, the left side or the right side in the figure, to ensure that the first wheel disc 13 rotates, and the dial block 130 can swing in the groove 1200 to abut against the upper groove wall or the lower groove wall and drive the slide plate 12 to slide. When the first wheel disc 13 drives the slide plate 12 to slide up, the abutment portion 121 arranged at the lower part of the channel 120 abuts against the protruding block 140, so that the second wheel disc 14 cannot rotate. When someone turns the second handle 102, since the slide plate 12 cannot move laterally, it will always keep abutting against the protruding block 140, so that the second wheel disc 14 cannot rotate. When the slide plate 12 slides down, the abutment portion 121 slides down accordingly and disengages from the swinging path of the protruding block 140.

[0026] like Figure 5-6 As shown, a disk 144 is provided in the middle of one side of the second wheel disc 14 facing the first wheel disc 13, and the disk 144 and the second wheel disc 14 are both provided on the same axis. An arc segment a 145 is provided on the outer side of the disk 144, and an arc segment b 133 is provided on one side of the first wheel disc 13 facing the second wheel disc 14, and one end of the arc segment a 145 abuts against one end of the arc segment b 133, that is, in a clockwise direction, that is, in a downward pressing rotation direction, the head end of the arc segment a 145 abuts against the tail end of the arc segment b, and the arc segment a 145 and the arc segment b 133 are rotated clockwise. Preferably, two discs are provided. When the first disc 13 and the second disc 14 are combined, the arc segment b 133 is located outside the disc 144 and between the arc segments a 145. The arc segments a 145 and the arc segments b 133 cannot be assembled to form a ring. There is a certain gap between the tail end of the arc segment a 145 and the head end of the arc segment b 133, so that the lifting of the outer handle 2 cannot drive the first disc 13 to rotate. The lifting of the outer handle 2 can only drive the second disc 14 to swing in the gap, so that the second disc 14 can only drive the first disc 13 to rotate in one direction.

[0027] The above embodiments are preferred embodiments of the present utility model. All structures similar to the present utility model and equivalent changes made thereto should fall within the protection scope of the present utility model.

Claims

1. A reverse locking structure of a swing door lock, comprising an inner handle and an outer handle arranged on both sides of the swing door, characterized in that: The outer handle includes a slide plate that can slide in a straight line, a first wheel plate fixedly connected to the square shaft, and a second wheel plate used to drive the first wheel plate to rotate in one direction. The inner handle includes a square shaft fixedly connected to the first wheel plate. A shift block is protruding from the outer side of the first wheel plate to drive the slide plate to slide in a straight line. The slide plate is provided with an abutment portion for abutting against the rotation path of the second wheel plate, and abuts against or detaches from the second wheel plate as the slide plate slides.

2. The anti-locking structure of a swing door lock according to claim 1, characterized in that: The inner handle includes a first handle and a first base, and one end of the square shaft is fixedly connected to the first handle.

3. The anti-locking structure of a swing door lock according to claim 1, characterized in that: The outer handle includes a second handle and a second base, the first wheel disc, the second wheel disc and the slide plate are all arranged in the second base, the slide plate is linearly slidably connected to the second base, and the second wheel disc is fixedly connected to the second handle.

4. The anti-locking structure of a swing door lock according to claim 3, characterized in that: An opening is provided on the side of the second base, and a tool insertion groove is provided on the slide plate, and the tool insertion groove corresponds to the opening.

5. The anti-locking structure of a swing door lock according to claim 1, characterized in that: The slide plate slides up and down on the first wheel plate and the second wheel plate, and a channel is provided in the middle, a groove is provided on the right side of the channel, the shift block is provided in the groove, the abutment is provided at the lower part of the channel, and a protruding block abutting against the abutment is provided on the lower side of the second wheel plate.

6. The anti-locking structure of a swing door lock according to claim 1, characterized in that: A circular disc is arranged in the middle of one side of the second wheel disc facing the first wheel disc, an arc segment a is arranged on the outer side of the circular disc, an arc segment b is arranged on one side of the first wheel disc facing the second wheel disc, and one end of the arc segment a butts against one end of the arc segment b.

7. The anti-locking structure of a swing door lock according to claim 1, characterized in that: It also includes a locking tongue mechanism arranged between the inner handle and the outer handle, and the square shaft passes through the locking tongue mechanism.

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