CN114098240B

CN114098240B - Foreign matter prevention device and safety belt lock catch

Info

Publication number: CN114098240B
Application number: CN202111259770.4A
Authority: CN
Inventors: 王城波; 施炳军; 蒋立钟
Original assignee: Zhejiang Songyuan Automotive Safety Systems Co ltd
Current assignee: Zhejiang Songyuan Automotive Safety Systems Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2023-06-06
Anticipated expiration: 2041-10-28
Also published as: CN114098240A

Abstract

The application discloses prevent foreign matter device includes: the support piece, the packaging swinging piece and the rotating piece are arranged at the front end position of the shell; the first part of the rotating piece is movably connected to the supporting piece; the packaging swinging piece is movably connected to the second part of the rotating piece and packages the port; when the lock tongue is inserted into the port, the packaging swinging piece is driven, so that the first part of the rotating piece moves along the opposite direction of the insertion of the lock tongue and has reset elasticity; when the lock tongue is separated from the port, the rotating piece and the packaging swinging piece are reset through the reset elastic force. The foreign matter preventing device can be used for sealing the port for inserting the lock tongue, and can automatically reset to the state of the port of the initial sealing cover when the lock tongue is separated from the port, so that foreign matters are not easy to enter the inner space of the safety belt lock catch, and the use safety and the service life of the safety belt lock catch are improved.

Description

Foreign matter prevention device and safety belt lock catch

Technical Field

The application relates to the technical field of automobiles, in particular to a foreign matter prevention device and a safety belt lock catch.

Background

A seat belt buckle is a safety device used in an automobile and is fixedly attached to the inside of the automobile. After the occupant sits in the seat, the seat belt will enclose the occupant and the tongue on the seat belt will be inserted into the seat belt buckle, thereby securing the occupant to the vehicle seat when the vehicle is severely decelerating.

However, when the passenger does not use the safety belt lock catch, the lock tongue on the safety belt and the safety belt lock catch are in a separated state, and the port of the safety belt lock catch, into which the lock tongue is inserted, is in an opening state, so that some foreign matters can easily enter the safety belt lock catch from the port, and the normal use of the safety belt lock catch is affected.

Therefore, how to maintain the normal use of the safety belt lock, improve the use safety and service life of the safety belt lock, and is a problem to be solved by those skilled in the art.

Disclosure of Invention

The embodiment of the application provides a foreign matter prevention device to how to maintain the normal use of safety belt hasp among the solution prior art, improve safety in utilization and the life's of safety belt hasp problem.

The embodiment of the application provides a foreign matter prevention device which is arranged at a port of a shell of a safety belt lock catch, used for inserting a lock tongue; comprising the following steps: the support piece, the packaging swinging piece and the rotating piece;

the support is mounted at a front end of the housing proximate the port;

the first part of the rotating piece is movably connected to the supporting piece;

the packaging swinging piece is movably connected to the second part of the rotating piece and packages the port;

when the lock tongue is inserted into the port, the packaging swinging piece is driven to present the packaged port and rotate around the second part of the rotating piece, so that the first part of the rotating piece moves along the opposite direction of the insertion of the lock tongue and has reset elastic force; when the lock tongue is separated from the port, the rotating piece and the packaging swinging piece are reset through the reset elastic force.

Optionally, the support piece comprises an insertion block and a containing groove;

the accommodating groove is arranged on the end face of the supporting piece, which is away from the inside of the shell, and is used for accommodating the rotating piece;

the inserting blocks are arranged at the two horizontal ends of the supporting piece and are used for being inserted into the fixing grooves arranged at the front end of the shell, so that the supporting piece is fixedly installed at the front end of the shell.

Optionally, the first portion of the rotating member includes a first through hole and a first connecting rod;

the first through hole is arranged at the first part of the rotating piece along the direction perpendicular to the insertion direction of the lock tongue and is opposite to the connecting hole arranged on the supporting piece; the first connecting rod penetrates through the first through hole along the direction perpendicular to the insertion direction of the lock tongue and is connected with the connecting hole, so that the rotating piece is movably mounted on the supporting piece.

Optionally, the second part of the rotating member has a U-shaped groove structure, and includes a second through hole, a second connecting rod and a torsion spring;

the second through holes are arranged at the two horizontal ends of the second part of the U-shaped groove structure along the direction perpendicular to the insertion direction of the lock tongue; the second connecting rod is inserted into the second through hole along the direction perpendicular to the insertion direction of the lock tongue; the torsional spring is pressed close to respectively the horizontal both ends setting of U type groove structure is in on the second connecting rod, just the first butt end butt of torsional spring in the second part of rotating the piece, the second butt end butt of torsional spring in encapsulation swinging member, the torsional spring has the elasticity that resets.

Optionally, the packaging swinging piece comprises a connecting part and a packaging part which are integrally formed;

the connecting part is provided with a third through hole which is arranged along the direction perpendicular to the insertion direction of the lock tongue, and the packaging swinging piece is movably connected with the second connecting rod through the third through hole;

the packaging part is packaged at the port, and the second abutting end of the torsion spring abuts against the packaging part.

Optionally, the first portion of the rotating member includes two ends of the first connecting rod and a torsion spring;

the first connecting rod is movably arranged on the connecting hole on the support piece along the direction perpendicular to the insertion direction of the lock tongue;

the torsional springs are respectively arranged at two ends of the first connecting rod, the first abutting ends of the torsional springs are abutted to the supporting piece, the second abutting ends of the torsional springs are abutted to the packaging swinging piece, and the torsional springs have reset elastic force.

the connecting part is provided with a third through hole which is arranged along the direction perpendicular to the insertion direction of the lock tongue, and the packaging swinging piece is movably connected with the second part of the first connecting rod through the third through hole;

Optionally, the method further comprises: the packaging reset piece is provided with elastic force and is attached to the first part of the rotating piece and the supporting piece;

when the lock tongue is inserted into the port, the packaging swinging piece is driven to present the packaged port and rotate around the second part of the rotating piece, so that the first part of the rotating piece moves along the opposite direction of the insertion of the lock tongue and drives the packaging resetting piece to move along the opposite direction of the insertion of the lock tongue, and the packaging resetting piece has resetting elastic force; when the lock tongue is separated from the port, the packaging reset piece enables the packaging swing piece and the rotating piece to reset through the reset elastic force.

Optionally, the packaging reset piece is L-shaped and comprises a fixing part which is integrally formed and is horizontally arranged and a reset part which is vertically arranged;

the fixing part is horizontally and fixedly arranged at the bottom end of the supporting piece; the reset part is perpendicular to the fixed part and is attached to and fixed on the first part of the rotating piece.

Optionally, the packaging resetting piece further comprises a tension spring, wherein the tension spring is arranged between the resetting portion and the first part of the rotating piece and is used for resetting the packaging resetting piece along the insertion direction of the lock tongue.

Optionally, the housing comprises an upper housing and a lower housing, the support being mounted at a front end of the lower housing proximate the port; after the upper shell and the lower shell are covered, the upper shell encapsulates the encapsulation resetting piece in the upper shell so as to limit the freedom degree of the encapsulation resetting piece in the opposite direction of the insertion of the lock tongue.

Optionally, the method further comprises: and the dustproof film is attached to the end faces of the packaging swinging piece, the rotating piece and the packaging resetting piece.

The embodiment of the application also provides a safety belt lock catch, which comprises: the casing and set up prevent foreign matter device of the port that is used for the spring bolt to insert of casing, wherein, prevent foreign matter device includes: the support piece, the packaging swinging piece and the rotating piece;

the support is mounted at a front end of the housing proximate the port;

Compared with the prior art, the application has the following advantages:

the embodiment of the application provides a foreign matter prevention device which is arranged at a port of a shell of a safety belt lock catch, used for inserting a lock tongue; comprising the following steps: the support piece, the packaging swinging piece and the rotating piece; the support is mounted at a front end of the housing proximate the port; the first part of the rotating piece is movably connected to the supporting piece, and the packaging resetting piece is attached to the first part of the rotating piece and the supporting piece; the packaging swinging piece is movably connected to the second part of the rotating piece and packages the port; when the lock tongue is inserted into the port, the packaging swinging piece is driven to rotate around the second part of the rotating piece, so that the first part of the rotating piece moves along the opposite direction of the insertion of the lock tongue and has reset elastic force; when the lock tongue is separated from the port, the rotating piece and the packaging swinging piece are reset through the reset elastic force.

According to the embodiment of the application, the supporting piece is used as a carrier for packaging the swinging piece and the rotating piece, so that the packaging swinging piece and the rotating piece can be installed at a port, used for inserting a lock tongue, of a shell of the safety belt lock catch, and the port is packaged. And when the lock tongue is inserted to the port, the packaging swinging piece is driven to enable the packaging swinging piece and the rotating piece to rotate in a matched mode, the packaged port can be displayed, the lock tongue is inserted into the port, and meanwhile the rotating piece has elastic force. When the lock tongue is separated from the port, the rotating piece enables the packaging swinging piece and the rotating piece to reset through the reset elastic force. The foreign matter prevention device can be used for sealing the port for inserting the lock tongue, and can automatically reset to the state of the port of the initial sealing cover when the lock tongue is separated from the port, so that foreign matters are not easy to enter the inner space of the safety belt lock catch, normal use of the safety belt lock catch is maintained, and the use safety and the service life of the safety belt lock catch are improved.

Drawings

Fig. 1 is a schematic structural view of a foreign matter prevention device according to a first embodiment of the present application mounted on a seat belt buckle.

Fig. 2 is an exploded view of a seat belt buckle provided in the first embodiment of the present application.

Fig. 3 is a schematic structural view of an upper housing of the seat belt buckle according to the first embodiment of the present application.

Fig. 4 is a partially enlarged schematic view of a foreign matter prevention device according to a first embodiment of the present application, which is mounted on a seat belt buckle.

Fig. 5 is a schematic structural view of still another foreign matter prevention device according to the first embodiment of the present application, which is mounted on a seat belt buckle.

Fig. 6 is a partially enlarged schematic view of a foreign matter prevention device according to a first embodiment of the present application.

Fig. 7 is a schematic structural view of a support member provided in the first embodiment of the present application.

Fig. 8 is a schematic structural view of a rotating member according to the first embodiment of the present application.

Fig. 9 is a schematic structural view of a package swing member according to the first embodiment of the present application.

Fig. 10 is a schematic structural view of the first connecting rod, the second connecting rod and the torsion spring according to the first embodiment of the present application.

Fig. 11 is a schematic structural diagram of a package reset provided in the first embodiment of the present application.

Fig. 12 is an assembled schematic view of the first connecting rod and torsion spring provided in the first embodiment of the present application.

Reference numerals: the foreign matter prevention device 100, the seat belt buckle 200, the port 300, the housing 1, the upper housing 11, the lower housing 12, the fixing groove 13, the support 2, the plug block 21, the receiving groove 22, the connection hole 23, the packing swing 3, the connection portion 31, the third through hole 32, the packing portion 33, the rotating member 4, the first portion 41, the first through hole 42, the first connecting rod 43, the second portion 44, the second through hole 45, the second connecting rod 46, the torsion spring 47, the packing return 5, the fixing portion 51, the return portion 52, the spring seat 6, the guide shaft 7, the button 8, the lock body 9, the lock hook 10, the spring 20, the bolt shaft 30, the ejection block 40, the harness controller 50, the rivet 60, the o-ring 70, the inertia block 80.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present application. The embodiments of the present application may be embodied in many other forms other than those described herein and similarly generalized by those skilled in the art may be made without departing from the spirit of the embodiments of the present application and the embodiments of the present application are therefore not limited to the specific implementations disclosed below.

The first embodiment of the present application provides a foreign matter prevention device 100, and fig. 1 is a schematic structural diagram of the foreign matter prevention device provided in the first embodiment of the present application mounted on a safety belt lock buckle. Fig. 2 is an exploded view of a seat belt buckle provided in the first embodiment of the present application. Fig. 3 is a schematic structural view of an upper housing of the seat belt buckle according to the first embodiment of the present application. Fig. 4 is a partially enlarged schematic view of a foreign matter prevention device according to a first embodiment of the present application, which is mounted on a seat belt buckle. Fig. 5 is a schematic structural view of still another foreign matter prevention device according to the first embodiment of the present application, which is mounted on a seat belt buckle. Fig. 6 is a partially enlarged schematic view of a foreign matter prevention device according to a first embodiment of the present application, which is mounted on a seat belt buckle. Fig. 7 is a schematic structural view of a support member provided in the first embodiment of the present application. Fig. 8 is a schematic structural view of a rotating member according to the first embodiment of the present application. Fig. 9 is a schematic structural view of a package swing member according to the first embodiment of the present application. Fig. 10 is a schematic structural view of the first connecting rod, the second connecting rod and the torsion spring according to the first embodiment of the present application. Fig. 11 is a schematic structural diagram of a package reset provided in the first embodiment of the present application. Fig. 12 is an assembled schematic view of the first connecting rod and torsion spring provided in the first embodiment of the present application.

As shown in fig. 1 to 9, a first embodiment of the present application provides a foreign matter prevention device 100 mounted to a port 300 for tongue insertion of a housing 1 of a seat belt buckle 200. In the first embodiment of the present application, the housing 1 has an opening for receiving the button of the seat belt buckle 200 and a port 300 for inserting the tongue, and the opening of the button and the port 300 for inserting the tongue are in communication. The housing 1 includes an upper housing 11 and a lower housing 12, the upper housing 11 and the lower housing 12 being fastened to form the housing 1 of the belt buckle 200. The opening for accommodating the button of the seat belt buckle 200 and the port 300 for inserting the locking bolt are located on the upper housing 11, specifically, the shape of the upper housing 11 is L-shaped, the opening for accommodating the button of the seat belt buckle 200 and the port 300 for inserting the locking bolt are disposed on the short side of the L-shape, the opening for accommodating the button occupies a larger area of the short side, and the foreign matter preventing device 100 is mounted at the position of the port 300 for inserting the locking bolt.

Specifically, the foreign matter prevention device 100 includes: a supporting member 2, a package swinging member 3, a rotating member 4, and a package resetting member 5 having an elastic force.

Wherein the support member 2 is installed at the front end of the housing 1 adjacent to the port 300, in the first embodiment of the present application, the support member 2 is installed at the position of the upper housing 11 adjacent to the port 300, and specifically, the whole body of the support member 2 is square and includes the plugging block 21 and the accommodating groove 22; the receiving groove 22 is provided at an end face of the support 2 facing away from the interior of the housing 1 for receiving the rotor 4, and in particular for receiving the first portion 41 of the rotor 4. The end surface of the accommodating groove 22 is provided with an end surface for accommodating a cylinder. And at the two horizontal ends of the accommodating groove 22, there are respectively provided connection holes 23, and the center line of the connection holes 23 and the center line of the accommodating groove 22 may be arranged on the same straight line. Of course, the center line of the connecting hole 23 and the center line of the receiving groove 22 may be disposed on different lines. The plug-in blocks 21 are arranged at two horizontal ends of the supporting piece 2 and are used for being plugged into the fixing grooves 13 arranged at the front end of the shell 1, and the width of the plug-in blocks 21 is gradually increased along the direction of inserting the lock tongue, so that the supporting piece 2 can be clamped with the fixing grooves 13 when the supporting piece 2 is installed in the fixing grooves 13 along the opposite direction of inserting the lock tongue, and the supporting piece 2 is fixedly installed at the front end position of the shell 1.

In the first embodiment of the present application, corresponding to the front end position of the housing 1, the wall constituting the port 300 for inserting the lock tongue faces to one side of the inside of the seat belt buckle 200, and the fixing groove 13 for inserting the support 2 is provided recessed in the wall, and the horizontal two ends of the fixing groove 13 are stepped to be clamped with the corresponding structure of the support 2, so that the support 2 can be stably mounted in the fixing groove 13. In addition, a plurality of grooves with different shapes are further formed in the end face of the supporting member 2, which is away from the accommodating groove 22, and the end face of the supporting member 2 is provided with a groove structure, so that the weight of the supporting member 2 is reduced.

In the first embodiment of the present application, as shown in fig. 4 and fig. 7-11, the rotating member 4 includes a first portion 41 and a second portion 44 that are integrally formed, where the first portion 41 of the rotating member 4 is movably connected to the supporting member 2, and specifically is movably connected to the accommodating groove 22 of the supporting member 2. The second part 44 of the rotating member 4 is arranged towards the opening for receiving the button, the second part 44 of the rotating member 4 being movably connected with the packaging swinging member 3. The structure of the first portion 41 and the second portion 44 of the rotary member 4 will be described in detail below.

Specifically, in the first embodiment of the present application, as shown in fig. 4 and fig. 7 to 11, the first portion 41 of the rotating member 4 includes a first through hole 42 and a first connecting rod 43; the first through hole 42 is disposed at the first portion 41 of the rotating member 4 along a direction perpendicular to the direction of inserting the bolt and is opposite to the connecting hole 23 disposed on the supporting member 2, and the first connecting rod 43 penetrates the first through hole 42 along a direction perpendicular to the direction of inserting the bolt and is connected to the connecting hole 23, so as to movably mount the rotating member 4 on the supporting member 2. The first portion 41 of the rotating member 4 is rotatable in the receiving groove 22 of the supporting member 2 by the first connecting rod 43.

In this first embodiment of the present application, the second portion 44 of the rotating member 4 is a U-shaped groove structure, including a second through hole 45, a second connecting rod 46 and a torsion spring 47, where the second through hole 45 is disposed along a vertical direction in which the locking bolt is inserted in two horizontal ends of the U-shaped groove structure, a center line of the second through hole 45 is parallel to a center line of the first through hole 42, the second connecting rod 46 is parallel to the first connecting rod 43 and is inserted in the second through hole 45 along a vertical direction in which the locking bolt is inserted, two ends of the second connecting rod 46 can rotate in the second through hole 45, and a main body portion of the second connecting rod 46 is disposed in a hollow space of the U-shaped groove structure. The torsion springs 47 are respectively arranged on the second connecting rod 46 close to the two horizontal ends of the U-shaped groove structure, and the torsion springs 47 can rotate along with the rotation of the second connecting rod 46. The torsion spring 47 includes a first abutting end and a second abutting end, the first abutting end of the torsion spring 47 abuts against the second portion 44 of the rotating member 4, and the second abutting end of the torsion spring 47 abuts against the package swinging member 3. The torsion springs 47 are provided in two.

In the first embodiment of the present application, the packaging swinging member 3 is movably connected to the second portion 44 of the rotating member 4, and encapsulates the port 300, and specifically, the packaging swinging member 3 includes an integrally formed connecting portion 31 and an encapsulating portion 33; the connecting portion 31 has a third through hole 32 perpendicular to the insertion direction of the bolt, a center line of the third through hole 32 is collinear with a center line of the second through hole 45, the packaging swinging member 3 is movably connected to the second connecting rod 46 through the third through hole 32, and the packaging swinging member 3 can be movably connected to the U-shaped groove structure of the second portion 44 of the rotating member 4 through the second connecting rod 46. The packaging portion 33 is packaged in the port 300, and the second abutting end of the torsion spring 47 abuts against the packaging portion 33.

The working principle is as follows: when the bolt is inserted into the port, the packaging swinging member 3 is driven to present the packaged port and rotates around the second part 44 of the rotating member 4, so that the first part 41 of the rotating member 4 moves along the opposite direction of the bolt insertion and has a reset elastic force; when the lock tongue is separated from the port, the rotating piece 4 and the packaging swinging piece 3 are reset through the reset elastic force. The first embodiment of the present application uses the supporting member 2 as a carrier for the packing swing member 3 and the rotating member 4, so that the packing swing member 3 and the rotating member 4 can be mounted on a port for bolt insertion of the housing 1 of the seat belt buckle to pack the port. And when the latch is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotating member 4 are rotated in cooperation, the packed port can be presented, the latch is inserted to the port, and the torsion spring 47 of the rotating member 4 has an elastic force. When the latch is disengaged from the port, the rotary member 4 resets the package swing member 3 and the rotary member 4 by the reset elastic force of the torsion spring 47. The foreign matter prevention device 100 of the first embodiment of the present application can encapsulate the port for inserting the lock tongue, and when the lock tongue is separated from the port, the port can be automatically reset to the state of the original encapsulation cover, so that the foreign matter is not easy to enter the internal space of the safety belt lock catch, thereby maintaining the normal use of the safety belt lock catch, and improving the use safety and the service life of the safety belt lock catch.

In the first embodiment of the present application, in order to further realize the resetting of the package swinging member 3 and the rotating member 4, a package resetting member 5 is further provided. The packaging reset piece 5 is attached to the first portion 41 of the rotating piece 4 and the supporting piece 2, wherein the packaging reset piece 5 is L-shaped and comprises a fixing portion 51 which is formed in an integrated manner and is arranged horizontally and a reset portion 52 which is arranged vertically; the fixing part 51 is horizontally and fixedly arranged at the bottom end of the supporting piece 2; the reset portion 52 is perpendicular to the fixing portion 51 and is attached to the first portion 41 of the rotating member 4. Since the package restoring member 5 has an elastic force, after the first portion 41 of the rotating member 4 drives the restoring portion 52 to move in a direction opposite to the direction in which the latch is inserted, the restoring portion 52 having an elastic force can restore the first portion 41 of the rotating member 4 in the direction in which the latch is inserted.

In the first embodiment of the present application, in order to maintain the reset function of the package reset piece 5, the package reset piece 5 further includes a tension spring (not shown) provided between the reset portion 52 and the first portion 41 of the rotating piece 4 for resetting the package reset piece 5 in the latch insertion direction. Specifically, one end of the tension spring is fixedly connected to the first portion 41 of the rotating member 4, the other end of the tension spring is fixedly connected to the reset portion 52 of the packaging reset member 5, after the first portion 41 of the rotating member 4 drives the reset portion 52 to move along the direction opposite to the direction in which the lock tongue is inserted, the tension spring is stretched and has a reset elastic force, and the reset portion 52 can reset the first portion 41 of the rotating member 4 along the direction in which the lock tongue is inserted through the reset elastic force.

After the upper case 11 and the lower case 12 are covered, the upper case 11 encapsulates the encapsulation restoration 5 inside the upper case 11, so as to limit the degree of freedom of the encapsulation restoration 5 in the opposite direction of the latch insertion, so that the encapsulation restoration 5 cannot be separated from the belt buckle 200 due to movement.

In other examples of the first embodiment of the present application, the rotating member 4 may be further configured as shown in connection with fig. 5, 6, 11 and 12, where the rotating member 4 includes a first portion 41 and a second portion (not shown) that are integrally formed, and the first portion 41 of the rotating member 4 is movably connected to the supporting member 2, and in particular, is movably connected to the connecting hole of the supporting member 2. The structure of the first portion 41 and the second portion of the rotation member 4 will be described in detail below.

Specifically, in one example, the first portion 41 of the rotating member 4 includes both ends of the first connecting rod 43 and the torsion spring 47, and the second portion of the rotating member 4 includes a portion between both ends of the first connecting rod 43. The first connecting rod 43 is movably disposed on the connecting hole of the support member 2 along a direction perpendicular to the insertion direction of the locking bolt. The torsion springs 47 are respectively disposed at two ends of the first connecting rod 43, a first abutting end of the torsion spring 47 abuts against the supporting member 2, a second abutting end of the torsion spring 47 abuts against the packaging swinging member 3, and when the packaging swinging member 3 rotates, the torsion spring 47 has a reset elastic force. The torsion springs 47 are provided in two.

Correspondingly, in the first embodiment of the present application, the packaging swinging member 3 is movably connected to the second portion 44 of the rotating member 4 and encapsulates the port 300, specifically, the packaging swinging member 3 includes an integrally formed connecting portion 31 and an encapsulating portion 33, the connecting portion 31 has a third through hole 32 disposed along a direction perpendicular to the insertion direction of the locking bolt, and the packaging swinging member 3 is movably connected to the second portion of the first connecting rod 43 through the third through hole 32, that is, the second portion of the first connecting rod 43 penetrates through the third through hole 32. The packaging portion 33 is packaged in the port, and the second abutting end of the torsion spring 47 abuts against the packaging portion 33.

It can be understood that the connection manner between the rotating member 4 and the packaging swinging member 3 can also realize that the rotating member 4 drives the packaging swinging member 3 to automatically rotate, and when the locking bolt is separated from the port 300, the rotating member 4 drives the packaging swinging member 3 to automatically package the port 300 into which the locking bolt is inserted.

In the first embodiment of the present application, based on that there is a gap between the package swing member 3, the rotation member 4 and the package reset member 5, in order to prevent fine dust from falling into the inside of the seat belt buckle 200, the foreign matter prevention device 100 further includes a dustproof film (not shown) that is attached to respective end surfaces of the package swing member 3, the rotation member 4 and the package reset member 5 to encapsulate the gap between the package swing member 3, the rotation member 4 and the package reset member 5. The dustproof film is made of elastic and transparent materials, and has the advantages that the dustproof film can deform along with the movement of the packaging swinging piece 3, the rotating piece 4 and the packaging resetting piece 5, so that the dustproof film is not easy to damage; the transparent has the advantage that the specific positions of the package swinging member 3, the rotating member 4 and the package resetting member 5 can be observed while the dustproof film is covered.

The working principle of the foreign matter prevention device 100 will be described below, specifically, when the latch is inserted into the port 300, the latch contacts with the package swing member 3, the package swing member 3 is driven to rotate around the second portion 44 of the rotating member 4 by the second connection rod 46, the package portion 33 of the package swing member 3 moves in the latch insertion direction, and the second portion 44 of the rotating member 4 is also moved in the latch insertion direction by the driving of the torsion spring 47, so that the first portion 41 of the rotating member 4 is driven to move in the opposite direction of the latch insertion in the accommodating groove 22 of the supporting member 2, and the package reset member 5 is driven to move in the opposite direction of the latch insertion, so that the package reset member 5 moves in the opposite direction of the latch insertion and has a reset elastic force. When the lock tongue pops out of the port 300, the package reset piece 5 moves along the direction of inserting the lock tongue by the reset elastic force of the package reset piece 5, and drives the first part 41 of the rotating piece 4 to move along the direction of inserting the lock tongue in the accommodating groove 22 of the supporting piece 2, so that the second part 44 of the rotating piece 4 moves in the opposite direction of inserting the lock tongue, and the package part 33 of the package swing piece 3 moves in the opposite direction of inserting the lock tongue by the second connecting rod 46 under the driving of the torsion spring 47, so that the package swing piece 3, the rotating piece 4 and the package reset piece 5 are reset.

The first embodiment of the present application uses the supporting member 2 as a carrier for the packing swing member 3, the rotating member 4, and the packing reset member 5, so that the packing swing member 3, the rotating member 4, and the packing reset member 5 can be mounted on the port 300 for tongue insertion of the housing 1 of the seat belt buckle 200 to pack the port 300. And when the lock tongue is inserted into the port 300, the packaging swinging member 3 is driven so that the packaging swinging member 3 and the rotating member 4 are matched to rotate, the packaged port 300 can be presented, the lock tongue is inserted into the port 300, and meanwhile, the packaging resetting member 5 has elastic force. When the latch is separated from the port 300, the package restoring member 5 restores the package swinging member 3 and the rotating member 4 by the restoring spring force. The foreign matter prevention device 100 of the first embodiment of the present application can encapsulate the port 300 for inserting the lock tongue, and when the lock tongue is separated from the port 300, the port 300 can be automatically reset to the original state of the encapsulation cover, so that the foreign matter is not easy to enter into the internal space of the safety belt lock catch 200, thereby maintaining the normal use of the safety belt lock catch 200, and improving the use safety and service life of the safety belt lock catch 200.

The first embodiment of the present application provides a foreign matter prevention device 100, a port 300 for insertion of a tongue mounted to a housing 1 of a seat belt buckle 200; comprising the following steps: a supporting member 2, a package swinging member 3, a rotating member 4, and a package resetting member 5 having an elastic force; the support 2 is mounted at the front end of the housing 1 proximate to the port 300; the first part 41 of the rotating member 4 is movably connected to the supporting member 2, and the packaging resetting member 5 is attached to the first part 41 of the rotating member 4 and the supporting member 2; the packaging swinging piece 3 is movably connected with the second part 44 of the rotating piece 4, and packages the port 300; when the latch is inserted into the port 300, the packing swing member 3 is driven to rotate around the second portion 44 of the rotating member 4, so that the first portion 41 of the rotating member 4 moves in the opposite direction to the insertion of the latch and has a restoring elastic force; when the lock tongue is separated from the port, the rotating piece 4 and the packaging swinging piece 3 are reset through the reset elastic force. The first embodiment of the present application uses the supporting member 2 as a carrier for the packing swing member 3 and the rotating member 4, so that the packing swing member 3 and the rotating member 4 can be mounted on a port for bolt insertion of the housing 1 of the seat belt buckle to pack the port. And when the latch is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotating member 4 are rotated in cooperation, the packed port can be presented, the latch is inserted to the port, and the torsion spring 47 of the rotating member 4 has an elastic force. When the latch is disengaged from the port, the rotary member 4 resets the package swing member 3 and the rotary member 4 by the reset elastic force of the torsion spring 47. The foreign matter prevention device 100 of the first embodiment of the present application can encapsulate the port for inserting the lock tongue, and when the lock tongue is separated from the port, the port can be automatically reset to the state of the original encapsulation cover, so that the foreign matter is not easy to enter the internal space of the safety belt lock catch, thereby maintaining the normal use of the safety belt lock catch, and improving the use safety and the service life of the safety belt lock catch.

A second embodiment of the present application provides a seat belt buckle 200, as shown in fig. 1 and 2, comprising: a housing 1 and a foreign matter prevention device 100 provided at a port 300 of the housing 1 for insertion of a tongue, wherein the foreign matter prevention device 100 includes: a supporting member 2, a package swinging member 3, a rotating member 4, and a package resetting member 5 having an elastic force; the support 2 is mounted at the front end of the housing 1 proximate to the port 300; the first part 41 of the rotating member 4 is movably connected to the supporting member 2, and the packaging resetting member 5 is attached to the first part 41 of the rotating member 4 and the supporting member 2; the packaging swinging piece 3 is movably connected with the second part 44 of the rotating piece 4, and packages the port 300; when the latch is inserted into the port 300, the packing swing member 3 is driven to present the packed port 300 and rotates around the second portion 44 of the rotating member 4, so that the first portion 41 of the rotating member 4 moves in the opposite direction to the insertion of the latch and has a reset elastic force; when the lock tongue is separated from the port, the rotating piece 4 and the packaging swinging piece 3 are reset through the reset elastic force.

The second embodiment of the present application uses the supporting member 2 as a carrier for the packing swing member 3 and the rotating member 4, so that the packing swing member 3 and the rotating member 4 can be mounted on a port for bolt insertion of the housing 1 of the seat belt buckle to pack the port. And when the latch is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotating member 4 are rotated in cooperation, the packed port can be presented, the latch is inserted to the port, and the torsion spring 47 of the rotating member 4 has an elastic force. When the latch is disengaged from the port, the rotary member 4 resets the package swing member 3 and the rotary member 4 by the reset elastic force of the torsion spring 47. The foreign matter prevention device 100 of the second embodiment of the present application can encapsulate the port for inserting the lock tongue, and when the lock tongue is separated from the port, the port can be automatically reset to the state of the original encapsulation cover, so that the foreign matter is not easy to enter the internal space of the safety belt lock catch, thereby maintaining the normal use of the safety belt lock catch, and improving the use safety and the service life of the safety belt lock catch.

The above description of the specific structure of the foreign matter prevention device 100 can be referred to the content of the above first embodiment, and the second embodiment of the present application will not be repeated here. The seat belt buckle 200 provided in the second embodiment of the present application further includes: the ejector block 40, the spring seat 6, the weight (not shown), the button 8, the lock body 9, the lock hook 10, the spring 20, the bolt shaft 30, the first virtual switch (not shown), the second virtual switch (not shown), the harness controller 50, the rivet 60, the O-ring 70, the inertia block 80, and the like. Based on the above-mentioned structures, the conventional arrangement in the art is adopted, and the specific arrangement position and connection manner can be referred to the conventional arrangement manner, and the repeated description will be omitted here.

While the preferred embodiment has been described, it is not intended to limit the invention thereto, and any person skilled in the art may make variations and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be defined by the claims of the present application.

Claims

1. A foreign matter prevention device which is arranged at a port of a shell of a safety belt lock catch, used for inserting a lock tongue; characterized by comprising the following steps: the support piece, the packaging swinging piece and the rotating piece;

the support is mounted at a front end of the housing proximate the port;

when the lock tongue is inserted into the port, the packaging swinging piece is driven to present the packaged port and rotate around the second part of the rotating piece, so that the first part of the rotating piece moves along the opposite direction of the insertion of the lock tongue and has reset elastic force; when the lock tongue is separated from the port, the rotating piece and the packaging swinging piece are reset through the reset elastic force;

the first part of the rotating piece at least comprises a first connecting rod or a first connecting rod and a torsion spring which are connected with each other, wherein the first part of the rotating piece is movably connected to the supporting piece, specifically, the first part of the rotating piece is movably connected to the supporting piece through the first connecting rod or the supporting piece through the first connecting rod and the torsion spring, and the torsion spring generates reset elastic force when rotating along with the first connecting rod;

the second part of the rotating piece at least comprises a second connecting rod and a torsion spring which are connected with each other; the packaging swinging piece rotates around the second part of the rotating piece, in particular the packaging swinging piece rotates around the second connecting rod, so that the torsion spring has reset elasticity;

the return spring force of the packaging swinging member after being driven is provided by the first part of the rotating member or the second part of the rotating member.

2. The seat belt buckle according to claim 1, wherein the support member includes an insertion block and a receiving groove;

3. The seat belt buckle of claim 1 wherein the first portion of the rotating member further comprises a first through hole; the movable connection on the support piece through the first connecting rod specifically comprises: the first through hole is arranged at the first part of the rotating piece along the direction perpendicular to the insertion direction of the lock tongue and is opposite to the connecting hole arranged on the supporting piece; the first connecting rod penetrates through the first through hole along the direction perpendicular to the insertion direction of the lock tongue and is connected with the connecting hole, so that the rotating piece is movably mounted on the supporting piece.

4. The seat belt buckle of claim 3 wherein the second portion of the rotating member is of a U-shaped channel configuration and further comprising a second through hole; the packaging swinging piece rotates around the second connecting rod, so that the torsion spring has reset elasticity and specifically comprises:

5. The seat belt buckle of claim 4 wherein the packaging swing member includes an integrally formed connection portion and packaging portion;

6. The seat belt buckle according to claim 1, wherein the seat belt buckle is movably connected to the support member through the first connecting rod and the torsion spring, and the torsion spring generates a return spring force when rotating with the first connecting rod, and specifically comprises:

7. The seat belt buckle of claim 6 wherein the package swing includes an integrally formed connection portion and package portion;

8. The seat belt buckle of claim 1 further comprising: the packaging reset piece is provided with elastic force and is attached to the first part of the rotating piece and the supporting piece;

9. The seat belt buckle of claim 8 wherein the package return is L-shaped and includes an integrally formed horizontally disposed fixed portion and a vertically disposed return portion;

10. A seat belt buckle, comprising: the casing and set up prevent foreign matter device of the port that is used for the spring bolt to insert of casing, wherein, prevent foreign matter device includes: the support piece, the packaging swinging piece and the rotating piece;

the support is mounted at a front end of the housing proximate the port;