CN114098240A

CN114098240A - Foreign matter prevention device and safety belt lock catch

Info

Publication number: CN114098240A
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: 2022-03-01
Anticipated expiration: 2041-10-28
Also published as: CN114098240B

Abstract

The application discloses prevent foreign matter device includes: the supporting piece is arranged at the front end of the shell; the first part of the rotating part is movably connected to the supporting part; 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 enable the first part of the rotating piece to move along the direction opposite to the direction of inserting 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 foreign matter preventing device can be used for packaging the port for inserting the lock tongue, and the lock tongue can be automatically reset to the initial state of the packaging cover port when being 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 a vehicle and is fixedly attached to the inside of the vehicle. After the passenger sits down on the seat, the seat belt will enclose the passenger, and the tongue on the seat belt is inserted into the buckle of the seat belt, thereby securing the passenger to the vehicle seat when the vehicle is severely decelerated.

However, when the passenger does not use the seat belt buckle, the tongue of the seat belt and the seat belt buckle are mostly in a separated state, and the port of the seat belt buckle for inserting the tongue is in an open state, so that some foreign matters can easily enter the inside of the seat belt buckle from the port, thereby affecting the normal use of the seat belt buckle.

Therefore, how to maintain the normal use of the safety belt lock, improve the use safety and the service life of the safety belt lock becomes a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The embodiment of the application provides a prevent foreign matter device to solve how to maintain the normal use of safety belt hasp among the prior art, improve the 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, used for inserting a bolt, of a shell of a safety belt lock catch; the method comprises the following steps: a support member, a packaging swing member and a rotating member;

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

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

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 in the direction opposite to the direction of inserting 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 supporting member includes an insertion block and a receiving groove;

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

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

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

the first through hole is arranged on the first part of the rotating piece along the direction vertical 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 is in a U-shaped groove structure, and includes a second through hole, a second connecting rod and a torsion spring;

the second through hole is arranged at the two horizontal ends of the second part of the U-shaped groove structure along the direction vertical to the insertion direction of the lock tongue; the second connecting rod is inserted into the second through hole along the direction vertical to the insertion direction of the bolt; 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 swing piece, the torsional spring has the elasticity that resets.

Optionally, the package swinging member includes a connecting portion and a package portion that are integrally formed;

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

the packaging part is packaged in the port, and the second butt joint end of the torsion spring is abutted to the packaging part.

Optionally, the first part 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 supporting piece along the direction vertical to the inserting direction of the lock tongue;

the torsional spring sets up respectively the both ends of head rod, just the first butt end butt of torsional spring in support piece, the second butt end butt of torsional spring in encapsulation swing piece, the torsional spring has the elasticity that resets.

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

Optionally, the method further includes: the encapsulation reset piece 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 direction opposite to the direction in which the lock tongue is inserted, and the packaging resetting piece is driven to move along the direction opposite to the direction in which the lock tongue is inserted, and the packaging resetting piece has resetting elastic force; when the lock tongue is separated from the port, the encapsulation reset piece enables the encapsulation swinging piece and the rotating piece to reset through the reset elastic force.

Optionally, the encapsulation reset piece is L-shaped, and includes an integrally formed horizontally arranged fixing portion and a vertically arranged reset portion;

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

Optionally, the encapsulation piece that resets still includes the extension spring, the extension spring sets up the portion that resets with rotate between the first part of piece, be used for with the encapsulation piece that resets is followed the spring bolt direction of inserting resets.

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

Optionally, the method further includes: 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 present application further provides a safety belt lock catch, include: the housing and set up and be in the foreign matter preventing device of the port that is used for the spring bolt to insert of housing, wherein, the foreign matter preventing device includes: a support member, a packaging swing member and a rotating member;

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

the embodiment of the application provides a foreign matter prevention device which is arranged at a port, used for inserting a bolt, of a shell of a safety belt lock catch; the method comprises the following steps: a support member, a packaging swing member and a rotating member; the support is mounted at a front position of the housing proximate to the port; the first part of the rotating part is movably connected to the supporting part, and the encapsulation resetting part is attached to the first part of the rotating part and the supporting part; 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 direction opposite to the insertion direction 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 support piece is used as a carrier for packaging the swinging piece and the rotating piece, so that the swinging piece and the rotating piece can be packaged at a port for inserting a lock tongue of a shell of the safety belt lock catch to package the port. When the lock tongue is inserted into the port, the packaging swinging piece is driven, so that the packaging swinging piece and the rotating piece are matched to rotate, the packaged port can be presented, 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 resetting elastic force. The foreign matter preventing device can be used for packaging a port for inserting the lock tongue, and when the lock tongue is separated from the port, the foreign matter preventing device can automatically reset to the initial state of the port of the packaging cover, 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 view of a structure in which a foreign object prevention device according to a first embodiment of the present invention is mounted on a buckle of a seat belt.

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

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

Fig. 4 is a partially enlarged view illustrating a structure of the foreign object prevention apparatus according to the first embodiment of the present application, which is mounted on the buckle of the seatbelt.

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

Fig. 6 is a partially enlarged view of a safety belt buckle to which a foreign matter prevention device according to a first embodiment of the present invention is attached.

Fig. 7 is a schematic structural diagram of a support member according to the first embodiment of the present application.

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

FIG. 9 is a schematic structural view of a package pendulum according to the first embodiment of the present application.

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

Fig. 11 is a schematic structural diagram of a package reset element according to a first embodiment of the present application.

Fig. 12 is an assembly view of the first connecting rod and the torsion spring according to the first embodiment of the present application.

Reference numerals: the foreign object prevention device 100, the seatbelt buckle 200, the port 300, the housing 1, the upper housing 11, the lower housing 12, the fixing groove 13, the support member 2, the insertion block 21, the receiving groove 22, the connecting hole 23, the encapsulating swing member 3, the connecting portion 31, the third through hole 32, the encapsulating 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 encapsulating reset member 5, the fixing portion 51, the reset portion 52, the spring seat 6, the guide shaft 7, the button 8, the lock body 9, the latch hook 10, the spring 20, the latch shaft 30, the ejector block 40, the harness controller 50, the rivet 60, the O-ring 70, and the inertia block 80.

Detailed Description

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

A first embodiment of the present application provides a foreign object prevention device 100, and fig. 1 is a schematic structural view illustrating that the foreign object prevention device provided in the first embodiment of the present application is mounted on a seat belt buckle. Fig. 2 is an exploded view of a seat belt buckle provided in accordance with a first embodiment of the present application. Fig. 3 is a schematic structural diagram of an upper housing of a seat belt buckle according to a first embodiment of the present application. Fig. 4 is a partially enlarged view illustrating a structure of the foreign object prevention apparatus according to the first embodiment of the present application, which is mounted on the buckle of the seatbelt. Fig. 5 is a schematic view of a structure in which another foreign matter prevention device according to the first embodiment of the present application is mounted on a buckle of a seat belt. Fig. 6 is a partially enlarged view illustrating a structure of the foreign object prevention device according to the first embodiment of the present application, which is mounted on the buckle of the seatbelt. Fig. 7 is a schematic structural diagram of a support member according to the first embodiment of the present application. Fig. 8 is a schematic structural diagram of a rotating member according to the first embodiment of the present application. FIG. 9 is a schematic structural view of a package pendulum according to the first embodiment of the present application. Fig. 10 is a schematic structural diagram of a first connecting rod, a second connecting rod and a torsion spring according to the first embodiment of the present application. Fig. 11 is a schematic structural diagram of a package reset element according to a first embodiment of the present application. Fig. 12 is an assembly view of the first connecting rod and the torsion spring according to the first embodiment of the present application.

As shown in fig. 1 to 9, a first embodiment of the present application provides a foreign object prevention apparatus 100 mounted to a port 300 for a tongue insertion of a housing 1 of a seatbelt buckle 200. In the first embodiment of the present application, the housing 1 has an opening for receiving the button of the seatbelt buckle 200 and a port 300 for inserting the latch bolt, and the opening of the button and the port 300 for inserting the latch bolt are in a communicating state. The housing 1 includes an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are fastened to form the housing 1 of the seat belt buckle 200. The opening for receiving the button of the buckle 200 and the port 300 for inserting the tongue are located on the upper case 11, specifically, the upper case 11 is L-shaped, the opening for receiving the button of the buckle 200 and the port 300 for inserting the tongue are provided on the short side of the L-shape, the opening for receiving the button occupies a large area of the short side, and the foreign object prevention device 100 is installed at the position of the port 300 for inserting the tongue.

Specifically, the foreign object prevention apparatus 100 includes: a support member 2, a packing swing member 3, a rotation member 4, and a packing return member 5 having an elastic force.

The support member 2 is mounted at a front end of the housing 1 close to the port 300, in the first embodiment of the present application, the support member 2 is mounted at a position of the upper housing 11 close to the port 300, specifically, the support member 2 is a square body as a whole, and includes an insertion block 21 and a receiving groove 22; the receiving groove 22 is disposed on an end surface of the supporting element 2 facing away from the inside of the housing 1, and is used for receiving the rotating element 4, and particularly for receiving the first portion 41 of the rotating element 4. The end face of the receiving groove 22 is configured to have an end face for receiving a cylinder. And the horizontal two ends of the containing groove 22 are respectively provided with a connecting hole 23, and the central line of the connecting hole 23 and the central line of the containing groove 22 can be arranged on the same straight line. Of course, the center line of the connection hole 23 and the center line of the receiving groove 22 may be arranged on different straight lines. The insertion blocks 21 are arranged at two horizontal ends of the support member 2 and used for being inserted into the fixing grooves 13 formed at the front end of the housing 1, and the width of the insertion blocks 21 is gradually increased along the direction in which the bolts are inserted, so that when the support member 2 is installed in the fixing grooves 13 along the direction opposite to the direction in which the bolts are inserted, the support member 2 can be clamped with the fixing grooves 13, and the support member 2 is fixedly installed at the front end of the housing 1.

In the first embodiment of the present application, corresponding to the front end position of the housing 1, a fixing groove 13 for inserting the support member 2 is formed in a wall body of the port 300 for inserting the tongue toward the inner side of the buckle 200, and both horizontal ends of the fixing groove 13 are stepped to be engaged with the corresponding structures of the support member 2, so that the support member 2 can be stably installed in the fixing groove 13. In addition, on the terminal surface of the support member 2 deviating from the accommodating groove 22, a plurality of grooves with different shapes are further provided, and the terminal surface of the support member 2 is set to be of a groove structure, which is beneficial to reducing the weight of the support member 2.

In the first embodiment of the present application, as shown in fig. 4 and fig. 7 to 11, the rotating member 4 includes a first portion 41 and a second portion 44 that are integrally formed, wherein the first portion 41 of the rotating member 4 is movably connected to the supporting member 2, and is specifically movably connected to the receiving slot 22 of the supporting member 2. The second part 44 of the rotary member 4 is arranged towards the opening for receiving the push button, the second part 44 of the rotary member 4 being movably connected to the enclosing oscillating member 3. The structures of the first portion 41 and the second portion 44 of the rotation member 4 will be described in detail below.

Specifically, in the first embodiment of the present application, as shown in fig. 4, 7-11, the first portion 41 of the rotation member 4 includes the first through hole 42 and the first connection rod 43; the first through hole 42 is arranged at the first part 41 of the rotating member 4 along the direction perpendicular to the insertion direction of the bolt and is opposite to the connecting hole 23 arranged on the supporting member 2, and the first connecting rod 43 penetrates through the first through hole 42 along the direction perpendicular to the insertion direction of the bolt and is connected with the connecting hole 23, so that the rotating member 4 is movably arranged on the supporting member 2. The first portion 41 of the rotation member 4 is rotatable in the accommodation groove 22 of the support member 2 through the first connection rod 43.

In the first embodiment of this application, the second portion 44 of rotating piece 4 is U type groove structure, including second through-hole 45, second connecting rod 46 and torsional spring 47, wherein, second through-hole 45 is along perpendicular the spring bolt insertion direction sets up the horizontal both ends of U type groove structure, the central line at second through-hole 45 place is parallel with the central line at first through-hole 42 place, and second connecting rod 46 is on a parallel with first connecting rod 43 and along perpendicular the spring bolt insertion direction peg graft in second through-hole 45, the both ends of second connecting rod 46 can rotate in second through-hole 45, and the main part of second connecting rod 46 sets up in the hollow space of U type groove structure. The torsion springs 47 are respectively arranged on the second connecting rods 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 rods 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 packaging swinging member 3. The torsion springs 47 are provided in two.

In the first embodiment of the present application, the enclosing oscillating piece 3 is movably connected to the second portion 44 of the rotating piece 4 and encloses the port 300, specifically, the enclosing oscillating piece 3 includes the connecting portion 31 and the enclosing portion 33 which are integrally formed; the connecting portion 31 has a third through hole 32 arranged along a direction perpendicular to the insertion direction of the lock tongue, a center line of the third through hole 32 is collinear with a center line of the second through hole 45, the enclosure swinging member 3 is movably connected to the second connecting rod 46 through the third through hole 32, and the enclosure 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 sealing portion 33 is sealed in the port 300, and the second abutting end of the torsion spring 47 abuts against the sealing portion 33.

The working principle is as follows: when the bolt is inserted into the port, the packaging swinging piece 3 is driven to present the packaged port and rotate around the second part 44 of the rotating piece 4, so that the first part 41 of the rotating piece 4 moves in the opposite direction of the bolt insertion and has the 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 enclosing the swinging member 3 and the rotating member 4, so that the enclosing swinging member 3 and the rotating member 4 can be mounted at a port for inserting a tongue of the housing 1 of the seatbelt buckle to enclose the port. And when the latch bolt is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotation member 4 are rotated in cooperation, the packed port can be presented so that the latch bolt is inserted into the port, and the torsion spring 47 of the rotation member 4 has an elastic force. When the bolt is disengaged from the port, the rotation member 4 resets the packing swing member 3 and the rotation member 4 by the reset elastic force of the torsion spring 47. The foreign object prevention apparatus 100 according to the first embodiment of the present application may encapsulate a port for inserting a locking tongue, and may automatically reset to an initial state of encapsulating the port when the locking tongue is separated from the port, so that a foreign object is not easily introduced into an inner space of the seat belt buckle, thereby maintaining normal use of the seat belt buckle, and improving use safety and service life of the seat belt buckle.

In the first embodiment of the present application, in order to further reset the encapsulating oscillating member 3 and the rotating member 4, an encapsulating reset member 5 is further provided. The encapsulated reset piece 5 is attached to the first part 41 of the rotating piece 4 and the supporting piece 2, wherein the encapsulated reset piece 5 is L-shaped and comprises a horizontally arranged fixing part 51 and a vertically arranged reset part 52 which are integrally formed; the fixed part 51 is horizontally and fixedly arranged at the bottom end of the support part 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 encapsulated reset piece 5 has an elastic force, after the first part 41 of the rotation piece 4 drives the reset part 52 to move in the opposite direction to the insertion direction of the latch bolt, the reset part 52 having the elastic force can reset the first part 41 of the rotation piece 4 in the insertion direction of the latch bolt.

In the first embodiment of the present application, in order to maintain the reset function of the encapsulated reset element 5, the encapsulated reset element 5 further includes a tension spring (not shown) disposed between the reset portion 52 and the first portion 41 of the rotating element 4 for resetting the encapsulated reset element 5 in the latch insertion direction. Specifically, one end fixed connection of extension spring is in the first part 41 of rotating 4, and other end fixed connection is in the portion 52 that resets of encapsulation piece 5, and after the first part 41 of rotating 4 drove the portion 52 that resets and moves along the opposite direction with the spring bolt male, the extension spring was stretched, has the elasticity that resets, through this elasticity that resets for the portion 52 that resets can reset the first part 41 of rotating 4 along the spring bolt male direction.

It should be noted that, after the upper housing 11 and the lower housing 12 are closed, the upper housing 11 encloses the encapsulated reset piece 5 inside the upper housing 11 to limit the freedom of the encapsulated reset piece 5 in the opposite direction of the tongue insertion, so that the encapsulated reset piece 5 does not get out of the safety 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 in a structure, as shown in fig. 5, 6, 11 and 12, wherein the rotating member 4 includes a first portion 41 and a second portion (not shown) which are integrally formed, and the first portion 41 of the rotating member 4 is movably connected to the supporting member 2, and particularly, is movably connected to the connecting hole of the supporting member 2. The structures of the first portion 41 and the second portion of the rotating member 4 will be described in detail below.

Specifically, in one example, the first portion 41 of the rotation member 4 includes both ends of the first link lever 43 and the torsion spring 47, and the second portion of the rotation member 4 includes a portion between both ends of the first link lever 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 latch bolt. The torsion springs 47 are respectively disposed at two ends of the first connecting rod 43, the first abutting ends of the torsion springs 47 abut against the supporting member 2, the second abutting ends of the torsion springs 47 abut against the packaging swinging member 3, and the torsion springs 47 have restoring elasticity when the packaging swinging member 3 rotates. The torsion springs 47 are provided in two.

Correspondingly, in the first embodiment of the present application, the package swinging member 3 is movably connected to the second portion 44 of the rotating member 4 and encapsulates the port 300, specifically, the package swinging member 3 includes a connecting portion 31 and an encapsulating portion 33 which are integrally formed, the connecting portion 31 has a third through hole 32 which is arranged along a direction perpendicular to the insertion direction of the lock tongue, and the package 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 part 33 is packaged at the port, and the second abutting end of the torsion spring 47 abuts against the packaging part 33.

It can be understood that, the connection mode of the rotating member 4 and the encapsulating oscillating member 3 can also realize that the rotating member 4 drives the encapsulating oscillating member 3 to automatically rotate, and when the latch tongue is separated from the port 300, the rotating member 4 drives the encapsulating oscillating member 3 to automatically encapsulate the port 300 into which the latch tongue is inserted.

In the first embodiment of the present application, based on that there is a gap between the package swinging member 3, the rotating member 4, and the package resetting 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 dust-proof film (not shown) attached to the respective end surfaces of the package swinging member 3, the rotating member 4, and the package resetting member 5, so as to package the gap between the package swinging member 3, the rotating member 4, and the package resetting member 5. The dustproof film is made of elastic and transparent materials, and has the advantage 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 and is not easy to damage; the advantage of transparency is that while covering the dust-proof film, the specific positions of the encapsulating oscillating member 3, the rotating member 4 and the encapsulating returning member 5 can be observed.

The operation principle of the foreign object prevention apparatus 100 will be described below, specifically, when the latch bolt is inserted into the port 300, the latch bolt contacts the enclosure swing member 3, the enclosure swing member 3 is driven to rotate around the second portion 44 of the rotation member 4 through the second connection rod 46, the enclosure portion 33 of the enclosure swing member 3 moves in the direction in which the latch bolt is inserted, and the second portion 44 of the rotation member 4 also moves in the direction in which the latch bolt is inserted under the driving of the torsion spring 47, so as to drive the first portion 41 of the rotation member 4 to move in the opposite direction to the direction in which the latch bolt is inserted in the accommodation groove 22 of the support member 2 and drive the enclosure reset member 5 to move in the opposite direction to the direction in which the latch bolt is inserted, so that the enclosure reset member 5 moves in the opposite direction to the direction in which the latch bolt is inserted and has a reset elastic force. When the lock tongue is ejected out of the port 300, the encapsulated reset piece 5 moves along the direction of inserting the lock tongue by the reset elastic force of the encapsulated 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 towards the direction opposite to the direction of inserting the lock tongue, and the encapsulated part 33 of the encapsulated swinging piece 3 moves towards the direction opposite to the direction of inserting the lock tongue by the second connecting rod 46 under the driving of the torsion spring 47, so that the encapsulated swinging piece 3, the rotating piece 4 and the encapsulated reset piece 5 are reset.

The first embodiment of the present application uses the supporting member 2 as a carrier for enclosing the swinging member 3, the rotating member 4 and the enclosing returning member 5, so that the enclosing swinging member 3, the rotating member 4 and the enclosing returning member 5 can be mounted at the port 300 for inserting the tongue of the housing 1 of the seatbelt buckle 200 to enclose the port 300. When the latch bolt is inserted into the port 300, the packing swing member 3 is driven to rotate the packing swing member 3 and the rotation member 4 cooperatively, the packed port 300 can be presented, the latch bolt is inserted into the port 300, and the packing reset member 5 has elastic force. When the latch bolt is separated from the port 300, the encapsulating reset piece 5 resets the encapsulating swinging piece 3 and the rotating piece 4 by the reset elastic force. The foreign object prevention apparatus 100 according to the first embodiment of the present application may encapsulate the port 300 for inserting the locking tongue, and may automatically reset to the initial state of encapsulating the port 300 when the locking tongue is separated from the port 300, so that a foreign object is not easily introduced into the inner space of the buckle 200, thereby maintaining the normal use of the buckle 200, and improving the safety of the buckle 200 and the service life thereof.

The first embodiment of the present application provides a foreign object prevention apparatus 100, which is installed at a port 300 for a tongue insertion of a housing 1 of a buckle 200 of a seat belt; the method comprises the following steps: the supporting piece 2, the packaging swinging piece 3, the rotating piece 4 and the packaging resetting piece 5 with elastic force; the support 2 is mounted in a front position of the housing 1 proximate to the port 300; the first part 41 of the rotating part 4 is movably connected to the supporting part 2, and the encapsulating reset part 5 is attached to the first part 41 of the rotating part 4 and the supporting part 2; the enclosing swinging member 3 is movably connected to the second part 44 of the rotating member 4 and encloses the port 300; when the latch bolt is inserted into the port 300, the packing swing member 3 is driven to rotate around the second portion 44 of the rotation member 4, so that the first portion 41 of the rotation member 4 moves in the opposite direction to the direction in which the latch bolt is inserted, and has a return spring 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 enclosing the swinging member 3 and the rotating member 4, so that the enclosing swinging member 3 and the rotating member 4 can be mounted at a port for inserting a tongue of the housing 1 of the seatbelt buckle to enclose the port. And when the latch bolt is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotation member 4 are rotated in cooperation, the packed port can be presented so that the latch bolt is inserted into the port, and the torsion spring 47 of the rotation member 4 has an elastic force. When the bolt is disengaged from the port, the rotation member 4 resets the packing swing member 3 and the rotation member 4 by the reset elastic force of the torsion spring 47. The foreign object prevention apparatus 100 according to the first embodiment of the present application may encapsulate a port for inserting a locking tongue, and may automatically reset to an initial state of encapsulating the port when the locking tongue is separated from the port, so that a foreign object is not easily introduced into an inner space of the seat belt buckle, thereby maintaining normal use of the seat belt buckle, and improving use safety and service life of the seat belt buckle.

A second embodiment of the present application provides a seatbelt buckle 200, as shown in fig. 1 and 2, including: a housing 1 and a foreign object prevention apparatus 100 provided at a port 300 of the housing 1 for a latch bolt insertion, wherein the foreign object prevention apparatus 100 includes: the supporting piece 2, the packaging swinging piece 3, the rotating piece 4 and the packaging resetting piece 5 with elastic force; the support 2 is mounted in a front position of the housing 1 proximate to the port 300; the first part 41 of the rotating part 4 is movably connected to the supporting part 2, and the encapsulating reset part 5 is attached to the first part 41 of the rotating part 4 and the supporting part 2; the enclosing swinging member 3 is movably connected to the second part 44 of the rotating member 4 and encloses the port 300; when the bolt is inserted into the port 300, the packaging swinging piece 3 is driven to present the packaged port 300 and rotate around the second part 44 of the rotating piece 4, so that the first part 41 of the rotating piece 4 moves in the opposite direction of the bolt insertion and has the 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 enclosing the swinging member 3 and the rotating member 4, so that the enclosing swinging member 3 and the rotating member 4 can be mounted at a port for inserting a tongue of the housing 1 of the seatbelt buckle to enclose the port. And when the latch bolt is inserted to the port, the packing swing member 3 is driven so that the packing swing member 3 and the rotation member 4 are rotated in cooperation, the packed port can be presented so that the latch bolt is inserted into the port, and the torsion spring 47 of the rotation member 4 has an elastic force. When the bolt is disengaged from the port, the rotation member 4 resets the packing swing member 3 and the rotation member 4 by the reset elastic force of the torsion spring 47. The foreign object prevention apparatus 100 according to the second embodiment of the present application may encapsulate a port for inserting a locking tongue, and when the locking tongue is separated from the port, may automatically reset to the state of the initial encapsulating cover port, so that a foreign object is not easy to enter into the inner space of the seat belt buckle, thereby maintaining the normal use of the seat belt buckle, and improving the use safety and the service life of the seat belt buckle.

For a description of a specific structure of the foreign object prevention apparatus 100, reference may be made to the contents of the first embodiment, and a description of 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: ejection block 40, spring seat 6, counterbalance (not shown), button 8, lock body 9, latch hook 10, spring 20, bolt shaft 30, first virtual switch (not shown), second virtual switch (not shown), and harness controller 50, rivet 60, O-ring 70, inertia block 80, and the like. The above structures are conventional in the art, and specific arrangement positions and connection modes thereof can be referred to in a conventional arrangement mode, and detailed description thereof will not be repeated.

Although the present application has been described with reference to the preferred embodiments, it is not intended to limit the present application, and those skilled in the art can make variations and modifications without departing from the spirit and scope of the present application, therefore, the scope of the present application should be determined by the claims that follow.

Claims

1. A foreign matter prevention device is arranged at a port of a shell of a safety belt lock catch for inserting a lock tongue; it is characterized by comprising: a support member, a packaging swing member and a rotating member;

2. The seatbelt buckle according to claim 1, wherein said support member comprises a plug-in block and a receiving groove;

3. The seatbelt buckle as claimed in claim 1, wherein the first portion of the rotating member includes a first through hole and a first connecting rod;

4. The seatbelt buckle according to claim 3, wherein the second portion of the rotating member is a U-shaped groove structure including a second through hole, a second connecting rod and a torsion spring;

5. The seatbelt buckle according to claim 4, wherein the encapsulating oscillating member comprises an integrally formed connecting portion and encapsulating portion;

6. The seatbelt buckle as claimed in claim 1, wherein the first portion of the rotary member includes both ends of the first connecting rod and a torsion spring;

7. The seatbelt buckle according to claim 6, wherein the encapsulating swinging member includes an integrally formed connecting portion and encapsulating portion;

8. The seatbelt buckle as claimed in claim 1, further comprising: the encapsulation reset piece is attached to the first part of the rotating piece and the supporting piece;

9. The seatbelt buckle of claim 8, wherein said encapsulated reset element is L-shaped and includes an integrally formed horizontally disposed fixed portion and vertically disposed reset portion;

10. A seat belt buckle, comprising: the housing and set up and be in the foreign matter preventing device of the port that is used for the spring bolt to insert of housing, wherein, the foreign matter preventing device includes: a support member, a packaging swing member and a rotating member;