CN220726042U

CN220726042U - Automatic clearance eliminating type door bolt device

Info

Publication number: CN220726042U
Application number: CN202322203628.9U
Authority: CN
Inventors: 孔凡新; 韦福冠; 徐接文; 任德鹏
Original assignee: Fantawild Shenzhen Technology Co ltd
Current assignee: Fantawild Shenzhen Technology Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-04-05
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses an automatic clearance elimination type door latch device, which comprises: the bolt buckle, the bolt seat and the bolt shaft; the bolt buckle is internally provided with a bolt buckle through hole, and the bolt seat is internally provided with a bolt seat through hole; the front side of the bolt seat is provided with a notch communicated with the bolt seat through hole, the bolt shaft is assembled in the bolt buckle through hole and the bolt seat through hole, and the bolt shaft horizontally moves or axially rotates along the bolt buckle through hole and the bolt seat through hole; the bolt shaft comprises a first pin shaft and a second pin shaft, one end of the first pin shaft is sleeved with a first copper sleeve, and one end of the second pin shaft is sleeved with a stop block; one end of the first pin shaft is provided with an eccentric rotating head; the first copper bush is embedded into the bolt seat through hole for fixing, and an eccentric through hole is formed in the first copper bush; the dog includes first dog and second dog, is equipped with the through-hole in the first dog, and the through-hole includes first through-hole and second through-hole. The utility model can eliminate the gap between the door and the door column by rotation, and improve the stability of the device.

Description

Automatic clearance eliminating type door bolt device

Technical Field

The utility model relates to the technical field of bolts, in particular to an automatic clearance eliminating type door bolt device.

Background

The latch is a device for preventing the door from being opened, and the existing latch device is generally composed of a latch buckle, a latch seat and a latch shaft, and can lock the door and the door post of the equipment. However, due to reasons of design, manufacture, installation and the like, the existing bolt device cannot eliminate gaps at the crossing and overlapping positions of the door and the door column, so that the equipment door is easy to shake and produce abnormal sound in the running process of the equipment. Therefore, the existing bolt device has the problems of incapability of preventing shaking and poor stability.

Disclosure of Invention

The utility model aims to provide an automatic clearance elimination type door bolt device, which aims to solve the problems that the existing bolt device cannot prevent shaking and is poor in stability.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: there is provided an automatic clearance elimination latch apparatus, the latch apparatus comprising: the bolt buckle, the bolt seat and the bolt shaft;

the bolt buckle is internally provided with a bolt buckle through hole penetrating through the bolt buckle, the bolt seat is internally provided with a bolt seat through hole penetrating through the bolt seat, and the bolt buckle and the bolt seat are positioned on the same horizontal plane;

the front side of the bolt seat is provided with a notch with an opening at the bottom, the notch is communicated with the bolt seat through hole, the bolt shaft is assembled in the bolt buckle through hole and the bolt seat through hole, and the bolt shaft horizontally moves or axially rotates along the bolt buckle through hole and the bolt seat through hole;

the bolt shaft comprises a first bolt shaft and a second bolt shaft connected with the first bolt shaft, and the first bolt shaft and the second bolt shaft are of cylindrical structures; a first copper sleeve is sleeved at one end, far away from the second pin shaft, of the first pin shaft, and a stop block is sleeved at one end, far away from the first pin shaft, of the second pin shaft;

an eccentric rotating head is arranged at one end of the first pin shaft, which is not connected with the second pin shaft, and the eccentric rotating head is of an elliptic columnar structure; the first copper sleeve is embedded into the bolt seat through hole to be fixedly arranged, an eccentric through hole matched with the eccentric rotating head is arranged in the first copper sleeve, and the cross section of the eccentric through hole is elliptical;

the stop block comprises a first stop block and a second stop block connected with the first stop block, and the second stop block is positioned at the lower end of the first stop block; the first stop block is internally provided with a through hole penetrating through the first stop block, the through hole comprises a first through hole and a second through hole, the first through hole is positioned above the second through hole, and the first through hole is communicated with the second through hole.

Further, a third pin shaft is arranged at one end, which is not connected with the first pin shaft, of the second pin shaft, and the third pin shaft is of a shape like a Chinese character 'ji'.

Further, the first through hole is matched with the third pin shaft, and the first through hole is a Chinese character 'ji' -shaped through hole; the second through hole is a cylindrical through hole.

Further, a second copper sleeve is sleeved at one end, close to the first pin shaft, of the second pin shaft, and the second copper sleeve is embedded into the pin seat through hole to be fixedly arranged.

Further, a spring is sleeved at one end, close to the second pin shaft, of the first pin shaft.

Further, the radius of the cross section of the first pin shaft is smaller than that of the second pin shaft.

Further, a handle penetrating through the notch is further arranged at the joint of the first pin shaft and the second pin shaft, and the handle is arranged between the spring and the second copper sleeve.

Further, the upper end of the stop block is provided with a supporting plate and a pressure spring, the supporting plate is fixedly arranged in a first square notch at the upper end of the latch seat, and the pressure spring is arranged between the stop block and the supporting plate;

the lower extreme of bolt seat be provided with the square notch of second dog looks adaptation.

Further, the notch comprises a first notch and a second notch, the first notch is communicated with the second notch, and an included angle between the long axis direction of the first notch and the long axis direction of the second notch is larger than 30 degrees.

Further, the connection part of the first notch and the second notch is rounded, and the handle can horizontally move along the first notch to slide into the second notch or slide out of the second notch.

The utility model discloses a door bolt device capable of automatically eliminating clearance, which comprises: the bolt buckle, the bolt seat and the bolt shaft; the bolt buckle is internally provided with a bolt buckle through hole penetrating through the bolt buckle, the bolt seat is internally provided with a bolt seat through hole penetrating through the bolt seat, and the bolt buckle and the bolt seat are positioned on the same horizontal plane; the front side of the bolt seat is provided with a notch with an opening at the bottom, the notch is communicated with the bolt seat through hole, the bolt shaft is assembled in the bolt buckle through hole and the bolt seat through hole, and the bolt shaft horizontally moves or axially rotates along the bolt buckle through hole and the bolt seat through hole; the bolt shaft comprises a first bolt shaft and a second bolt shaft connected with the first bolt shaft, and the first bolt shaft and the second bolt shaft are of cylindrical structures; a first copper sleeve is sleeved at one end, far away from the second pin shaft, of the first pin shaft, and a stop block is sleeved at one end, far away from the first pin shaft, of the second pin shaft; an eccentric rotating head is arranged at one end of the first pin shaft, which is not connected with the second pin shaft, and the eccentric rotating head is of an elliptic columnar structure; the first copper sleeve is embedded into the bolt seat through hole to be fixedly arranged, an eccentric through hole matched with the eccentric rotating head is arranged in the first copper sleeve, and the cross section of the eccentric through hole is elliptical; the stop block comprises a first stop block and a second stop block connected with the first stop block, and the second stop block is positioned at the lower end of the first stop block; the first stop block is internally provided with a through hole penetrating through the first stop block, the through hole comprises a first through hole and a second through hole, the first through hole is positioned above the second through hole, and the first through hole is communicated with the second through hole. According to the utility model, on one hand, the through hole is formed to prevent the pin shaft from automatically rotating, and on the other hand, the eccentric rotating head is arranged to jack up the door fixed with the pin seat when rotating, so that the gap between the door and the door column is eliminated, and the use stability of the door pin device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an overall structure diagram of a latch device (door opening state) according to an embodiment of the present utility model;

fig. 2 is a first partial construction diagram of a latch device (door opening state) according to an embodiment of the present utility model;

fig. 3 is a second partial construction diagram of the latch device (door opening state) according to the embodiment of the present utility model;

fig. 4 is an overall structure diagram of a latch device (locking state) according to an embodiment of the present utility model;

FIG. 5 is a first partial block diagram of a latch mechanism (locked condition) according to an embodiment of the present utility model;

FIG. 6 is a second partial block diagram of the latch mechanism (locked state) provided in accordance with the embodiments of the present utility model;

fig. 7 is a schematic side view of a latch device (door-open state) according to an embodiment of the present utility model;

fig. 8 is a schematic side view of a latch device (locked state) according to an embodiment of the present utility model;

fig. 9 is a schematic view of a first portion of a latch device according to an embodiment of the present utility model;

fig. 10 is a schematic view of a second portion of a latch device according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a third portion of a latch device according to an embodiment of the present utility model;

wherein, each reference sign is as follows in the figure:

10. a latch device; 11. a latch buckle; 12. a latch seat; 13. pin shaft insertion; 14. a handle; 121. a notch; 1211. a first notch; 1212. a second notch; 131. a first copper sleeve; 132. a spring; 133. a second copper sleeve; 134. a stop block; 1341. a first stopper; 1342. a second stopper; 135. eccentric rotating head; 136. a third pin shaft; 122. a supporting plate; 123. a pressure spring; 137. a first pin shaft; 138. the second pin shaft is inserted; 15. a through hole; 151. a first through hole; 152. and a second through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1 to 8, an overall structure diagram of a latch device (door opening state) according to an embodiment of the present utility model shown in fig. 1 is shown; FIG. 2 is a first partial block diagram of a latch assembly (door open) according to an embodiment of the present utility model; FIG. 3 is a second partial block diagram of a latch assembly (door open) according to an embodiment of the present utility model; FIG. 4 is a block diagram of the latch assembly (locked state) according to the embodiment of the present utility model; FIG. 5 is a first partial block diagram of a latch mechanism (locked state) provided in accordance with an embodiment of the present utility model; FIG. 6 is a second partial block diagram of the latch mechanism (locked state) provided by the embodiment of the present utility model; fig. 7 is a schematic side view of a latch device (in a door open state) according to an embodiment of the present utility model; fig. 8 is a schematic side view of a latch device (locked state) according to an embodiment of the present utility model. As shown in fig. 1 to 8, the present utility model proposes a self-clearance door latch device 10, the door latch device 10 comprising: a latch button 11, a latch seat 12 and a latch shaft 13; the inside of the bolt buckle 11 is provided with a bolt buckle through hole penetrating through the bolt buckle 11, the inside of the bolt seat 12 is provided with a bolt seat through hole penetrating through the bolt seat 12, and the bolt buckle 11 and the bolt seat 12 are positioned on the same horizontal plane; the front side of the bolt seat 12 is provided with a notch 121 with an opening at the bottom, the notch 121 is communicated with the bolt seat through hole, the bolt shaft 13 is assembled in the bolt buckle through hole and the bolt seat through hole, and the bolt shaft 13 horizontally moves or axially rotates along the bolt buckle through hole and the bolt seat through hole; the latch shaft 13 comprises a first latch shaft 137 and a second latch shaft 138 connected with the first latch shaft 137, and the first latch shaft 137 and the second latch shaft 138 are both in cylindrical structures; a first copper sleeve 131 is sleeved at one end, far away from the second pin shaft 138, of the first pin shaft 137, and a stop block 134 is sleeved at one end, far away from the first pin shaft 137, of the second pin shaft 138; an eccentric rotating head 135 is arranged at one end of the first pin shaft 137, which is not connected with the second pin shaft 138, and the eccentric rotating head 135 has an elliptic cylindrical structure; the first copper sleeve 131 is embedded into the bolt seat through hole to be fixedly arranged, an eccentric through hole matched with the eccentric rotary head 135 is arranged in the first copper sleeve 131, and the cross section of the eccentric through hole is elliptical; the stop 134 includes a first stop 1341 and a second stop 1342 connected to the first stop 1341, the second stop 1342 being located at the lower end of the first stop 1341; the first block 1341 is provided with a through hole 15 penetrating through the first block 1341, the through hole 15 includes a first through hole 151 and a second through hole 152, the first through hole 151 is located above the second through hole 152, and the first through hole 151 is communicated with the second through hole 152.

In this embodiment, the latch device 10 includes a latch 11, a latch seat 12, and a latch shaft 13, where the rear side of the latch 11 is fixedly connected with a door post, the rear side of the latch seat 12 is fixedly connected with a door, the latch 11 and the latch seat 12 are located on the same horizontal plane, a latch through hole penetrating the latch 11 is formed in the latch 11, and a latch seat through hole penetrating the latch seat 12 is formed in the latch seat 12; the front side of the bolt seat 12 is provided with a notch 121 with an opening at the bottom, the notch 121 is communicated with the bolt seat through hole, the bolt shaft 13 is assembled in the bolt buckling through hole and the bolt seat through hole, and the bolt shaft 13 horizontally moves or axially rotates along the bolt buckling through hole and the bolt seat through hole to enter or exit the locking state.

The latch shaft 13 includes a first latch pin 137 and a second latch pin 138 connected to the first latch pin 137, and the first latch pin 137 and the second latch pin 138 are both cylindrical structures (see fig. 9 for specific details); a first copper sleeve 131 is sleeved at one end, far away from the second pin shaft 138, of the first pin shaft 137, and a stop block 134 is sleeved at one end, far away from the first pin shaft 137, of the second pin shaft 138; an eccentric rotating head 135 is arranged at one end of the first pin shaft 137, which is not connected with the second pin shaft 138, and the eccentric rotating head 135 has an elliptic cylindrical structure; the first copper sleeve 131 is embedded into the bolt seat through hole to be fixedly arranged, an eccentric through hole matched with the eccentric rotary head 135 is arranged in the first copper sleeve 131, and the cross section of the eccentric through hole is elliptical; the stop 134 includes a first stop 1341 and a second stop 1342 connected to the first stop 1341, the second stop 1342 being located at the lower end of the first stop 1341; a through hole 15 penetrating the first stopper 1341 is disposed in the first stopper 1341, the through hole 15 includes a first through hole 151 and a second through hole 152, the first through hole 151 is located above the second through hole 152, and the first through hole 151 is in communication with the second through hole 152 (see fig. 10 for details); the second through hole 152 has a size larger than that of the first through hole 151. When the latch device 10 is in the locked state, the eccentric rotary head 135 is protruded from the first copper bush 131 and rotated, so that the eccentric rotary head 135 is prevented from being retracted to the eccentric through hole. The end of the second pin shaft 138, which is not connected to the first pin shaft 137, is located in the first through hole 151, which can play a limiting role and prevent the pin shaft 13 from automatically rotating. The eccentric rotating head 135 has an eccentric structure, when the eccentric rotating head 135 rotates in the latch buckle through hole, the tops of the latch buckle 11 and the latch seat 12 can be deviated by a distance L, so that a gap at the crossing and overlapping part of the door and the door column can be eliminated, and the stability of the latch device 10 can be improved. Wherein, the eccentric rotation head 135 rotates in the latch buckle through hole by 90 degrees.

In an embodiment, as shown in fig. 2 and 5, a third pin 136 is disposed at an end of the second pin 138 not connected to the first pin 137, and the third pin 136 has a zigzag structure.

In this embodiment, the through holes 15 include a first through hole 151 and a second through hole 152, the first through hole 151 is located above the second through hole 152, and the first through hole 151 communicates with the second through hole 152 (see fig. 10 in detail); the first through hole 151 is matched with the third pin shaft 136, and when the third pin shaft 136 is located in the first through hole 151, the third pin shaft 136 cannot rotate in the first through hole 151, so as to achieve a locking effect. If the locking state needs to be released, the second stop 1342 needs to be pressed upwards, so that the third pin 136 is separated from the first through hole 151 and enters the second through hole 152, and the third pin 136 can rotate when being located in the second through hole 152.

In an embodiment, as shown in fig. 1, 3 and 6, the first through hole 151 is adapted to the third pin 136, and the first through hole 151 is a through hole with a shape of a Chinese character 'ji'; the second through hole 152 is a cylindrical through hole.

In this embodiment, the first through hole 151 is adapted to the third pin 136, and the first through hole 151 is a rectangular through hole; the second through hole 152 is a cylindrical through hole. When the third pin 136 is located in the first through hole 151, the third pin 136 cannot rotate in the first through hole 151, so as to achieve a locking effect. If the locking state needs to be released, the second block 1342 needs to be pushed upwards, so that the third pin 136 is separated from the first through hole 151 and enters the second through hole 152, and the third pin 136 can rotate when being located in the second through hole 152.

In an embodiment, as shown in fig. 2 and fig. 5, a second copper sleeve 133 is sleeved on one end of the second pin shaft 138 near the first pin shaft 137, and the second copper sleeve 133 is embedded into the pin seat through hole for fixing.

In this embodiment, a first copper sleeve 131 is sleeved at one end of the first pin 137 far from the second pin 138, and the first copper sleeve 131 is embedded into the pin seat through hole to be fixedly arranged; the second copper sleeve 133 is sleeved on one end of the second pin shaft 138, which is close to the first pin shaft 137, and the second copper sleeve 133 is embedded into the pin seat through hole to be fixedly arranged, and the pin shaft 13 can horizontally move in the first copper sleeve 131 and the second copper sleeve 133 under the action of external force to lock or unlock the door pin device 10.

In one embodiment, as shown in fig. 2 and 5, a spring 132 is sleeved on one end of the first pin shaft 137 near the second pin shaft 138.

In this embodiment, a spring 132 is sleeved on one end of the first pin shaft 137, which is close to the second pin shaft 138, and the radius of the cross section of the spring 132 is larger than the short radius of the cross section of the eccentric through hole, so that one end of the spring 132 is always abutted against the first end of the second pin shaft 138, and the other end of the spring 132 is always abutted against a side wall of the first copper sleeve 131; wherein the first end of the second pin shaft 138 is an end not connected to the stop block 134. The radius of the cross section of the first pin 137 is smaller than the short radius of the cross section of the eccentric through hole, and the first pin 137 can horizontally move in the eccentric through hole.

In one embodiment, as shown in fig. 2 and 5, the cross-sectional radius of the first pin shaft 137 is smaller than the cross-sectional radius of the second pin shaft 138.

In this embodiment, the first pin shaft 137 and the second pin shaft 138 are both in cylindrical structures, and the radius of the cross section of the first pin shaft 137 is smaller than that of the second pin shaft 138, so that one end of the spring 132 is always abutted against the first end of the second pin shaft 138, and the other end of the spring 132 is always abutted against a side wall of the first copper sleeve 131; wherein the first end of the second pin shaft 138 is an end not connected to the stop block 134.

In an embodiment, as shown in fig. 2 and 5, a handle 14 penetrating the notch 121 is further disposed at the connection between the first pin 137 and the second pin 138, and the handle 14 is disposed between the spring 132 and the second copper sleeve 133.

In this embodiment, a handle 14 penetrating through the notch 121 is further disposed at a connection portion between the first pin shaft 137 and the second pin shaft 138, the handle 14 is disposed between the spring 132 and the second copper sleeve 133, the handle 14 is fixedly connected to an outer side wall of the pin shaft 13, and the handle 14 can perform horizontal movement under an external force to enter or exit the locking state.

In one embodiment, as shown in fig. 3, 4 and 6, the upper end of the stop block 134 is provided with a supporting plate 122 and a compression spring 123, the supporting plate 122 is fixedly arranged in a first square notch at the upper end of the latch base 12, and the compression spring 123 is arranged between the stop block 134 and the supporting plate 122; the lower end of the latch base 12 is provided with a second square notch adapted to the second stop 1342.

In this embodiment, the top end of the stop block 134 is provided with a supporting plate 122 and a compression spring 123, where the compression spring 123 is a compression spring; the supporting plate 122 is fixedly arranged in a first square notch at the upper end of the latch seat 12, the pressure spring 123 is arranged between the stop block 134 and the supporting plate 122, when the latch device 10 is in a locking state, the third latch pin 136 is positioned in the first through hole 151, the first through hole 151 is matched with the third latch pin 136, the third latch pin 136 cannot rotate in the first through hole 151, the pressure spring 123 is arranged on the upper end face of the first stop block 1341, and the stop block 134 is subjected to downward pressure under the action of the pressure spring 123, so that the third latch pin 136 is positioned in the first through hole 151, and the locking effect of the latch device 10 can be effectively enhanced. When the latch mechanism 10 is in the locked position, the stop 134 is biased downwardly by the compression spring 123 and the second stop 1342 extends through the second square slot and out of the latch housing 12. When the latch device 10 needs to be unlocked, the second stop 1342 needs to be pressed upwards, so that the third latch pin 136 is separated from the first through hole 151 and enters the second through hole 152, when the third latch pin 136 is located in the second through hole 152, the handle 14 can be used to drive the latch shaft 13 to rotate, the latch shaft 13 after rotating by a certain angle can horizontally move along the notch 121 under the action of the spring 132 to realize automatic rebound unlocking, when the latch device 10 is in an open state, the eccentric rotating head 135 is located in the eccentric through hole, the second latch pin 138 is located in the second through hole 152, the second latch pin 138 is not matched with the first through hole 151, and cannot enter the first through hole 151.

In one embodiment, as shown in fig. 1, 4 and 11, the notch 121 includes a first notch 1211 and a second notch 1212, the first notch 1211 and the second notch 1212 are in communication, and an angle between a long axis direction of the first notch 1211 and a long axis direction of the second notch 1212 is 90 degrees.

In this embodiment, the first slot 1211 and the second slot 1212 are connected, and an angle between a long axis direction of the first slot 1211 and a long axis direction of the second slot 1212 is 90 degrees. The long axis direction of the first notch 1211 is perpendicular to the long axis direction of the second notch 1212. The handle 14 can drive the latch shaft 13 to horizontally move along the first notch 1211 under the action of external force. When the latch device 10 is in an open state and needs to be locked, the handle 14 is moved leftwards along the first notch 1211, and when the handle 14 is moved to the connection position of the first notch 1211 and the second notch 1212, the handle 14 is rotated downwards by 90 degrees, so that the handle 14 is installed in the second notch 1212, and the locking effect is achieved.

The angle between the long axis direction of the first slot 1211 and the long axis direction of the second slot 1212 is 90 degrees, and the handle 14 can drive the latch shaft 13 to move horizontally along the first slot 1211 under the action of external force. When the latch device 10 is in an open state and needs to be locked, the handle 14 is moved leftwards along the first notch 1211, and when the handle 14 is moved to the joint of the first notch 1211 and the second notch 1212, the handle 14 is rotated downwards while being moved leftwards, so that the handle 14 slides into the second notch 1212, thereby realizing the locking effect.

In one embodiment, as shown in fig. 1, 4 and 8, the junction of the first slot 1211 and the second slot 1212 is rounded, and the handle 14 is movable horizontally along the first slot 1211 to slide into the second slot 1212 or out of the second slot 1212.

In this embodiment, the connection between the first notch 1211 and the second notch 1212 is rounded (see fig. 11 specifically), and the rounded corner can improve the smoothness of sliding the handle. The handle 14 may move horizontally along the first slot 1211 to slide into the second slot 1212 or slide out of the second slot 1212, when the handle 14 slides into the second slot 1212, the latch device 10 is in a locked state, the eccentric rotary head 135 is located in the latch through hole, and the eccentric rotary head 135 is of an eccentric structure, so that the tops of the latch 11 and the latch seat 12 may deviate by a distance L, which may eliminate a gap at a crossing overlapping position of the door and the latch post, and improve stability of the latch device 10.

When the latch device 10 is in a locked state and needs to be unlocked, the second stop 1342 needs to be pressed upwards, and when the third latch pin 136 is disengaged from the first through hole 151 and enters the second through hole 152, the handle 14 is pulled upwards, so that the handle 14 slides out of the second notch 1212, and at this time, the latch shaft 13 can horizontally move rightward along the first notch 1211 under the action of the spring 132 to realize automatic rebound unlocking.

While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A self-clearance deadbolt assembly, said deadbolt assembly comprising: the bolt buckle, the bolt seat and the bolt shaft;

2. The automatic clearance elimination type door latch apparatus according to claim 1, wherein a third pin is provided at an end of the second pin which is not connected to the first pin, and the third pin has a figure-like structure.

3. The automatic clearance elimination type door latch device according to claim 2, wherein the first through hole is matched with the third pin shaft, and the first through hole is a rectangular through hole; the second through hole is a cylindrical through hole.

4. The automatic clearance elimination type door latch device according to claim 1, wherein a second copper sleeve is sleeved on one end, close to the first pin, of the second pin, and the second copper sleeve is embedded into the pin seat through hole to be fixedly arranged.

5. The automatic clearance elimination type door latch according to claim 4, wherein a spring is sleeved on one end of the first pin shaft close to the second pin shaft.

6. The automatic clearance elimination latch according to claim 1, 4 or 5, wherein the first pin has a smaller cross-sectional radius than the second pin.

7. The automatic clearance elimination latch according to claim 5, wherein a junction of said first pin and said second pin is further provided with a handle extending through said notch, said handle being disposed between said spring and said second copper sleeve.

8. The automatic clearance elimination type door latch device according to claim 1, wherein a supporting plate and a pressure spring are arranged at the upper end of the stop block, the supporting plate is fixedly arranged in a first square notch at the upper end of the latch seat, and the pressure spring is arranged between the stop block and the supporting plate;

9. The automatic clearance elimination latch according to claim 7, wherein said notches comprise a first notch and a second notch, said first notch and said second notch are in communication, and an angle between a long axis direction of said first notch and a long axis direction of said second notch is greater than 30 degrees.

10. The automatic clearance elimination latch according to claim 9, wherein a junction of said first slot and said second slot is rounded, said handle being horizontally movable along said first slot to slide into or out of said second slot.