CN212065885U

CN212065885U - Safety belt lock catch with switch

Info

Publication number: CN212065885U
Application number: CN202020723743.2U
Authority: CN
Inventors: 胡晏殊; 吴明伟; 王传旭; 王雅卓; 郭龙
Original assignee: Shenyang Jinbei Jinheng Automotive Safety System Co ltd
Current assignee: Shenyang Jinbei Jinheng Automotive Safety System Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2020-12-04
Anticipated expiration: 2030-05-06

Abstract

The utility model discloses a take safety belt hasp of switch, including lock core subassembly, upper shield shell and lower housing, upper shield shell with the lower housing is located respectively the top and the below of lock core subassembly, and can form the cover body in the lock core subassembly outside after the joint each other, lock core subassembly one side is provided with the switch module who has hall detecting element, the magnet subassembly is installed to the lock core subassembly. Has the advantages that: after the lock tongue is inserted into the lock core assembly, the magnet assembly is driven by the ejection piece to move to a state opposite to the chip, and then the lock tongue can be judged to be in a locking state, and the magnet assembly and the chip are in a non-locking state when in a non-opposite state, so that the misinformation of the locking state is reduced, and the accuracy of signal transmission of the unlocking and locking states of the safety belt, namely the state of the safety belt which is not worn by a passenger and the state of the safety belt which is worn by the passenger, is improved; after the shielding cover with magnetism isolation is arranged, the electromagnetic compatibility of the chip can be improved, and therefore the chip can be used in a system with high electromagnetic compatibility.

Description

Safety belt lock catch with switch

Technical Field

The utility model relates to a car blet technical field, concretely relates to take safety belt hasp of switch.

Background

The safety belt can effectively reduce the damage of the collision to passengers when the automobile collides, so the safety belt is required to be arranged in mass production of automobile types. The lock catch realizes that a person wears the safety belt and does not wear the safety belt through locking and unlocking the lock tongue in the safety belt. The locking device needs to have sound and light reminding functions to play a role in reminding people to wear the safety belt.

The existing lock catch has the function of judging the locking and unlocking of the lock tongue, the principle is that different positions of the ejection piece are acted on a mechanical switch, signals are generated and output to a whole vehicle control system through the connection and disconnection of the switch, and the whole vehicle system outputs sound and light prompts according to the set logic. The mechanical switch can only provide identification of the open circuit and the closed circuit, and the open circuit and the closed circuit which have faults of a fault loop cannot be identified, so that false alarm is caused. For the above reasons, the applicant proposes a latch structure that can stabilize output signals and has a low false alarm rate.

Disclosure of Invention

The utility model aims at providing a take safety belt hasp of switch just in order to solve above-mentioned problem, the utility model provides an among a great deal of technical scheme preferred technical scheme have: the safety belt state signal output is stable, the false alarm rate is low, and the like, and the technical effects are described in detail below.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a take safety belt hasp of switch, including lock core subassembly, upper shield shell and lower housing, the upper shield shell with the lower housing is located respectively the top and below of lock core subassembly, and can form the cover body in the lock core subassembly outside after mutual joint, lock core subassembly one side is provided with the switch module that has hall detection element, the lock core subassembly is installed magnet subassembly; the safety belt spring bolt inserts inside back of lock core subassembly, drives magnet subassembly is reciprocating motion to reach the locking position when the spring bolt inserts lock core subassembly is innermost, magnet subassembly when moving to the locking position with hall detecting element on the switch module is just right.

Preferably, the lock core assembly comprises a groove-shaped seat, a buckling lock functional piece is arranged in the groove-shaped seat, an ejecting piece matched with the magnet assembly is arranged on the groove-shaped seat, one end of the ejecting piece extends out of the side face of the groove-shaped seat, and the ejecting piece can reciprocate in the groove-shaped seat along with the plugging and unplugging of the lock tongue.

Preferably, the switch component comprises a PCBA for mounting the Hall detection element and a switch bracket, the PCBA is fixedly mounted on the switch bracket, and the switch bracket is fixedly clamped with the slot-shaped seat, so that a channel for sliding the magnet component is formed between the PCBA and the side surface of the slot-shaped seat; the PCBA is connected with an automobile control system through a wire.

As preferred, the shaping has the cooperation on the groove type seat first joint post and the second joint post of switch support, the shaping has the joint cooperation on the switch support first buckle and the cooperation of first joint post the card hole of second joint post, the switch support laminating is at groove type seat side surface, makes first joint post with just behind the cooperation of first buckle second joint post and the cooperation of card hole carry out the quadriversal spacingly to the switch support.

Preferably, a clamping hole is formed in the groove-shaped seat and located between the first clamping column and the second clamping column, an expansion buckle matched with the clamping hole is arranged on the switch support, and the expansion buckle penetrates through the clamping hole and then is fixed with the clamping hole.

Preferably, the PCBA comprises a PCB board, a chip of the Hall detection element and a peripheral circuit component, and the PCB board is fixedly connected with the switch bracket through a buckle.

Preferably, a shielding case is mounted on the PCB, and the shielding case is located outside the chip and the peripheral circuit assembly.

Preferably, the magnet assembly comprises a magnet and a magnet support, the magnet is clamped and fixed on the inner side of the magnet support, and the magnet support is matched with the ejection piece in a clamping mode.

Preferably, a C-shaped hole is formed in one side, back to the groove-shaped seat, of the ejection piece, a connecting column clamped and matched with the C-shaped hole is formed in the magnet support, and the axis direction of the connecting column is perpendicular to the projection of the sliding direction of the magnet.

Preferably, a square hole for fixing one end of the switch component is formed in the inner side of the lower cover shell, and the end part of the switch component is in plug-in fit with the square hole.

To sum up, the utility model has the advantages that: 1. after the lock tongue is inserted into the lock core assembly, the magnet assembly is driven by the ejection piece to move to a state opposite to the chip, and then the lock tongue can be judged to be in a locking state, and the magnet assembly and the chip are in a non-locking state when in a non-opposite state, so that the misinformation of the locking state is reduced, and the accuracy of signal transmission of the unlocking and locking states of the safety belt, namely the state of the safety belt which is not worn by a passenger and the state of the safety belt which is worn by the passenger, is improved;

2. after the shielding cover with magnetism isolation is arranged, the electromagnetic compatibility of the chip can be improved, and therefore the chip can be used in a system with high electromagnetic compatibility.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of the explosion structure of the present invention;

fig. 2 is a schematic structural view of the lock cylinder assembly of the present invention;

fig. 3 is a schematic structural view of the magnet assembly of the present invention;

fig. 4 is a schematic structural view of the switch assembly of the present invention;

FIG. 5 is a schematic diagram of a PCBA;

fig. 6 is a schematic view of an assembly structure of the switch assembly and the lock cylinder assembly of the present invention;

fig. 7 is a schematic view of an assembly structure of the magnet assembly and the lock cylinder assembly of the present invention;

fig. 8 is a schematic view of an assembly structure of the magnet assembly and the lower housing according to the present invention;

fig. 9 is a schematic structural view of the unlocked state of the present invention;

fig. 10 is a schematic structural view of the locked state of the present invention.

The reference numerals are explained below:

1. a plug assembly; 11. a trough-shaped seat; 11a, a first clamping column; 11b, a clamping hole; 11c, a second clamping column; 12. a pop-up member; 12a, C-shaped holes; 2. an upper housing; 3. a lower housing shell; 4. a magnet assembly; 41. a magnet; 42. a magnet holder; 42a, a connecting column; 5. a switch assembly; 51. a switch bracket; 52. a wire; 53. PCBA; 531. a PCB board; 531a, guide posts; 532. a chip; 533. a peripheral circuit component; 534. a shield case; 6. and a lock tongue.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention will be described in further detail with reference to fig. 1 to 8.

Referring to fig. 1, the utility model provides a safety belt lock with switch, which comprises a lock cylinder assembly 1, an upper cover shell 2 and a lower cover shell 3, wherein the upper cover shell 2 and the lower cover shell 3 are respectively positioned at two sides of the lock cylinder assembly 1, and can be mutually clamped to form a cover body at the outer side of the lock cylinder assembly 1, a switch assembly 5 with a hall detection element is arranged at one side of the lock cylinder assembly 1, and a magnet assembly 4 is arranged on the lock cylinder assembly 1; safety belt spring bolt 6 inserts 1 inside backs of lock core subassembly, drives magnet subassembly 4 and is reciprocating motion to reach the locking position when 6 inserts 1 innermost sides of lock core subassemblies, magnet subassembly 4 just right with the hall detecting element on the switch module 5 when moving to the locking position. The magnet assembly 4 is driven to move when the bolt 6 is plugged and pulled out, when the bolt is driven to move to a locking position, the magnet assembly 4 is over against the Hall detection element, and the Hall detection element outputs high current, so that the locking state of the safety belt lock catch can be judged; on the contrary, if the magnet assembly 4 is not directly opposite to the hall detection element, the hall detection element outputs a low current, which is the unlocked state of the safety belt lock catch.

As shown in fig. 2, the cylinder assembly 1 includes a slot-shaped seat 11, a locking function member is disposed inside the slot-shaped seat 11, an eject member 12 cooperating with the magnet assembly 4 is disposed on the slot-shaped seat 11, one end of the eject member 12 extends out of the side surface of the slot-shaped seat 11, and the eject member 12 can reciprocate in the slot-shaped seat 11 along with the insertion and extraction of the lock tongue 6; the main body of the ejection piece 12 is positioned in the groove-shaped seat 11, one end of the ejection piece extends out of the groove-shaped seat 11, and the end of the ejection piece is in clamping fit with the magnet assembly 4, so that the magnet assembly 4 is driven to move in the process that the spring bolt 6 drives the ejection piece 12 to move;

as shown in fig. 4 and 5, the switch assembly 5 includes a PCBA53 and a switch bracket 51, the PCBA53 is fixedly mounted on the switch bracket 51, the switch bracket 51 is fixed to the groove-shaped seat 11 in a clamping manner, so that a channel for sliding the magnet assembly 4 is formed between the PCBA53 and the side surface of the groove-shaped seat 11, and after the bolt 6 is inserted into the lock core assembly 1, the magnet assembly 4 is driven by the ejecting member 12 to slide in the channel; the PCBA53 is connected with the automobile control system through a wire 52; the PCBA53 comprises a PCB 531, a chip 532 of a Hall detection element and a peripheral circuit component 533, wherein the chip 532 is a Hall switch, and the PCB 531 is fixedly connected with the switch bracket 51 through a buckle; a shield case 534 is mounted on the PCB 531, and the shield case 534 is located outside the chip 532 and the peripheral circuit component 533; the provision of the shield 534 may improve the electromagnetic compatibility of the hall switch, facilitating use of the device in higher electromagnetic compatibility systems.

As shown in fig. 6, a first clamping column 11a and a second clamping column 11c which are matched with the switch bracket 51 are formed on the groove-shaped seat 11, a first buckle which is clamped and matched with the first clamping column 11a and a clamping hole which is matched with the second clamping column 11c are formed on the switch bracket 51, the switch bracket 51 is attached to one side surface of the groove-shaped seat 11, so that after the first clamping column 11a is matched with the first buckle and the second clamping column 11c is matched with the clamping hole, the switch bracket 51 is limited in four directions, and after the four-direction limitation, the switch bracket 51 can be prevented from sliding along the side surface of the groove-shaped seat 11; a clamping hole 11b is formed in the groove-shaped seat 11, the clamping hole 11b is located between the first clamping column 11a and the second clamping column 11c, an expansion buckle matched with the clamping hole 11b is arranged on the switch support 51, and the expansion buckle penetrates through the clamping hole 11b and then is fixed with the clamping hole 11 b; the switch bracket 51 can be positioned by inserting the expansion buckle into the catching hole 11b, so that the switch bracket 51 is in a stable state at the side of the slot type seat 11.

As shown in fig. 3, the magnet assembly 4 includes a magnet 41 and a magnet holder 42, the magnet 41 is fixed inside the magnet holder 42 in a snap-fit manner, and the magnet holder 42 is matched with the ejector 12 in a snap-fit manner; as shown in fig. 7, a C-shaped hole 12a is formed on one side of the ejector 12 opposite to the slot-shaped seat 11, a connecting column 42a engaged with the C-shaped hole 12a is formed on the magnet holder 42, and the axial direction of the connecting column 42a is perpendicular to the projection of the sliding direction of the magnet 41; the axis direction of the connecting column 42a and the sliding direction of the magnet 41 are set to be in a projection vertical state, so that the magnet support 42 can be prevented from being separated from the C-shaped hole 12a in the sliding process, and the stability of connection and movement of the magnet support 42 and the ejection piece 12 is improved.

As shown in fig. 8, a square hole for fixing one end of the switch component 5 is formed in the inner side of the lower housing 3, a guide column 531a is formed at the end of the PCB 531, and the end of the switch component 5 is in insertion fit with the square hole, that is, the guide column 531a at the end of the PCB 531 is inserted into the square hole, so as to improve the stability of the PCB 531 after being fixed.

With the above structure, as shown in fig. 9, the state is an unlocked state of the seat belt buckle, at this time, the magnet assembly 4 is driven by the ejector 12 to be located at the farthest point from the hall switch, the magnet 41 and the hall switch are in a non-opposite state, at this time, the hall switch outputs a low current to the loop, and the system determines that the seat belt buckle is in the unlocked state;

as shown in fig. 10, the latch tongue 6 is inserted into the latch core assembly 1, and is in a locked state of the seat belt buckle, at this time, the magnet assembly 4 is driven by the ejector 12 and is in a state of being directly opposite to the hall switch, at this time, the hall switch outputs a high current, and the system determines that the seat belt buckle is in the locked state.

After the bolt 6 is inserted into the bolt assembly 1, the magnet assembly 4 is driven by the ejection piece 12 to move to be in a state opposite to the chip 532, and then the bolt 6 can be judged to be in a locking state, and the magnet assembly 4 and the chip 532 are in a non-locking state when being in a non-opposite state, so that the misinformation of the locking state is reduced, and the accuracy of signal transmission of safety belt unlocking and locking states, namely a state that a passenger does not wear a safety belt and a state that the passenger wears the safety belt, is improved; by providing the shield 534 with magnetic shielding, the electromagnetic compatibility of the chip 532 can be improved, and the chip can be used in a system with high electromagnetic compatibility.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The safety belt lock catch with the switch is characterized by comprising a lock cylinder assembly (1), an upper cover shell (2) and a lower cover shell (3), wherein the upper cover shell (2) and the lower cover shell (3) are respectively positioned above and below the lock cylinder assembly (1) and can be mutually clamped to form a cover body on the outer side of the lock cylinder assembly (1), one side of the lock cylinder assembly (1) is provided with a switch assembly (5) with a Hall detection element, and the lock cylinder assembly (1) is provided with a magnet assembly (4); safety belt spring bolt (6) insert inside back of lock core subassembly (1), drive magnet subassembly (4) are reciprocating motion to insert at spring bolt (6) reach the locking position when lock core subassembly (1) is the innermost, magnet subassembly (4) when moving to the locking position with hall detecting element on switch module (5) is just right.

2. The seatbelt buckle with switch as claimed in claim 1, wherein: the lock core assembly (1) comprises a groove-shaped seat (11), a buckling lock functional piece is arranged inside the groove-shaped seat (11), a matched ejecting piece (12) of the magnet assembly (4) is arranged on the groove-shaped seat (11), one end of the ejecting piece (12) extends out of the side face of the groove-shaped seat (11), and the ejecting piece (12) can move back and forth in the groove-shaped seat (11) along with the insertion and extraction of the lock tongue (6).

3. The seatbelt buckle with switch as claimed in claim 2, wherein: the switch component (5) comprises a PCBA (53) and a switch bracket (51), wherein the PCBA (53) is used for mounting the Hall detection element, the PCBA (53) is fixedly mounted on the switch bracket (51), and the switch bracket (51) is clamped and fixed with the groove-shaped seat (11), so that a channel for sliding the magnet component (4) is formed between the PCBA (53) and the side surface of the groove-shaped seat (11); the PCBA (53) is connected with an automobile control system through a wire (52).

4. The seatbelt buckle with switch as claimed in claim 3, wherein: the shaping has the cooperation on groove type seat (11) first joint post (11 a) and second joint post (11 c) of switch support (51), the shaping has the joint cooperation on switch support (51) first buckle and the cooperation of first joint post (11 a) the card hole of second joint post (11 c), switch support (51) laminate at groove type seat (11) a side surface, make first joint post (11 a) with just behind the first buckle cooperation second joint post (11 c) and card hole cooperation back carry out the quadriversal spacing to switch support (51).

5. The seatbelt buckle with switch as claimed in claim 4, wherein: the shaping has joint hole (11 b) on groove type seat (11), and this joint hole (11 b) is located between first joint post (11 a) and second joint post (11 c), be provided with the matching on switch support (51) the knot that expands of joint hole (11 b), it runs through to expand to detain rather than fixed behind joint hole (11 b).

6. The seatbelt buckle with switch as claimed in claim 4, wherein: the PCBA (53) comprises a PCB (531), a chip (532) of the Hall detection element and a peripheral circuit component (533), and the PCB (531) is fixedly connected with the switch support (51) through a buckle.

7. The seatbelt buckle with switch as claimed in claim 6, wherein: a shielding cover (534) is installed on the PCB (531), and the shielding cover (534) is positioned at the outer side of the chip (532) and the peripheral circuit assembly (533).

8. The seatbelt buckle with switch according to any one of claims 2 to 7, wherein: magnet subassembly (4) include magnet (41) and magnet support (42), magnet (41) joint is fixed magnet support (42) are inboard, magnet support (42) with ejection piece (12) joint cooperation.

9. The seatbelt buckle with switch as claimed in claim 8, wherein: the ejection piece (12) dorsad the shaping of slot type seat (11) one side has C type hole (12 a), the shaping has spliced pole (42 a) that the joint matches this C type hole (12 a) on magnet support (42), spliced pole (42 a) axis direction with the sliding direction projection of magnet (41) is perpendicular.

10. The seatbelt buckle with switch as claimed in claim 1, wherein: the inner side of the lower housing (3) is provided with a square hole for fixing one end of the switch component (5), and the end part of the switch component (5) is in splicing fit with the square hole.