Silencing type locking mechanism and application thereof on motor vehicle

Abstract

The invention discloses a noise reduction type locking mechanism and application thereof to a motor vehicle, and relates to the technical field of motor vehicle door locks, the noise reduction type locking mechanism comprises a lock plate and a lock pin, the lock pin is arranged in the middle of the lock plate, a fixing seat is arranged in the middle of the lock plate, positioning seats are arranged on the two sides of the fixing seat, positioning grooves are formed in the tops of the positioning seats, and the lock pin is of a U-shaped structure. Positioning holes are formed in the opposite sides of the two ends of the lock pin correspondingly, the two ends of the lock pin are inserted into the positioning grooves in the two sides correspondingly, a limiting unit used for limiting the lock pin is arranged in the middle of the fixing base, and a driving unit used for driving the limiting unit is arranged on the lock plate. And positioning units for positioning the silencing units are arranged on the opposite sides of the silencing units on the two sides. Through flexible connection of the vehicle door lock catch and the vehicle body, noise caused by rigid connection of the vehicle door and the vehicle body in the running process is avoided, the noise value is reduced, in addition, when the vehicle body is collided, the lock catch can be rapidly separated from the vehicle body, and therefore vehicle door opening and rapid rescue are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of motor vehicle door locks, in particular to a silencer locking mechanism and application thereof in motor vehicles. Background Art

[0002] The door locking mechanism is a key component in the vehicle safety system. It is responsible for ensuring that the door is securely locked when closed to prevent unauthorized entry and keep the door in a stable closed state while the vehicle is moving. The door striker is part of the door locking mechanism. The door and the body are locked together through the vehicle lock and the door striker to keep the door and the body locked, ensuring the safety of the door during normal use of the vehicle.

[0003] The Chinese patent with application number 2022103166446 discloses a car door lock. It includes a base and a lock ring; the base is used to connect with the car body; the base and the lock ring are formed by bending a metal plate as a whole, the lock ring is used to buckle with the ratchet, the lock ring includes a lock column and a lock hole, and the ratchet passes through the lock hole and buckles with the lock column. The above-mentioned car door lock is installed on the car body through the base. During use, the ratchet passes through the lock hole and buckles with the lock column. Since the base and the lock ring are formed by bending a metal plate as a whole, that is, the lock column and the base are connected as a whole, during the multiple opening and closing of the car door, the force of the ratchet pulling the lock column is evenly distributed on the entire car door lock, rather than concentrated on the connection between the lock column and the base. However, during use, the lock and the car body are rigidly connected, and the car door is prone to vibration, which increases the vehicle noise and makes the driving experience of the vehicle worse.

[0004] In addition, after long-term use, the fasteners are prone to loosening, causing the lock to loosen, thereby affecting the door sealing and driving safety, and increasing the noise. In addition, when the vehicle body is hit, the door lock mechanism in the prior art is easily locked on the door lock and difficult to open, affecting the rapid rescue of the driver and passengers. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a silencer locking mechanism and its application in motor vehicles. Through the soft connection between the door lock and the body, the noise generated by the rigid connection between the door and the body during driving is avoided, and the noise value is reduced. In addition, when the vehicle body collides, the lock can be quickly separated from the body to facilitate opening of the door and rescue, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a silent locking mechanism, comprising a lock plate and a lock pin, wherein the lock pin is arranged in the middle of the lock plate, a fixing seat is arranged in the middle of the lock plate, positioning seats are arranged on both sides of the fixing seat, a positioning groove is arranged on the top of the positioning seat, the lock pin is a U-shaped structure, positioning holes are arranged on opposite sides of both ends of the lock pin, the two ends of the lock pin are respectively inserted into the positioning grooves on both sides, and fixing plates are arranged on both ends of the lock plate, and fixing holes are arranged on the fixing plates;

[0007] The fixing plates on both sides are sleeved with silencer units, a limiting unit for limiting the position of the lock pin is provided in the middle of the fixing seat, a driving unit for driving the limiting unit is provided on the lock plate, and a positioning unit for positioning the silencer units is provided on the opposite sides of the silencer units on both sides;

[0008] The silencer unit comprises a silencer block, a matching groove is formed through the middle of the side surface of the silencer block, a limiting hole is formed through the top of the silencer block, the limiting hole is connected with the matching groove, an upper gasket is formed correspondingly at the inner top of the limiting hole, and a lower gasket is formed correspondingly at the inner bottom of the limiting hole.

[0009] Preferably, the matching groove has the same width as that of the fixing plate, the top of the limiting hole is a conical structure, the minimum aperture of the limiting hole is the same as that of the fixing hole, and the opposite ends of the upper and lower bushings correspond.

[0010] Preferably, the limiting unit comprises a guide groove and a bottom groove, the guide groove is arranged at the top of the fixing seat, the bottom groove passes through and is arranged at the bottom of the fixing seat, and the guide groove and the bottom groove are connected.

[0011] Preferably, a guide rod is provided in the guide groove, and sliding seats are movably sleeved on both sides of the guide rod. The sliding seats are slidably matched with the guide grooves, and limit pins are provided on the tops of the sliding seats on both sides. Pin holes corresponding to the limit pins are opened on the sides of the positioning seats, and reset springs are sleeved on both ends of the guide rod.

[0012] Preferably, the driving unit includes two symmetrically arranged elastic telescopic rods and two symmetrically opened residual grooves, the two residual grooves are respectively opened on the surfaces of the fixed plates on both sides, the fixed ends of the elastic telescopic rods slide through the residual grooves and extend to the other side of the fixed plates, and the fixed ends of the elastic telescopic rods are provided with a contact plate.

[0013] Preferably, the telescopic end of the elastic telescopic rod is provided with a main driving wedge block, the wedge-shaped surfaces of the main driving wedge blocks on both sides are slidably matched with main transmission wedge blocks, the opposite sides of the main transmission wedge blocks on both sides are provided with transmission rods, the transmission rods on both sides are staggered, the transmission rods are movably sleeved with a guide seat, the guide seat is fixedly connected to the lock plate, a driving spring is sleeved at a position on the transmission rod between the main transmission wedge block and the guide seat, an auxiliary transmission wedge block is provided at one end of the transmission rod away from the main transmission wedge block, and an auxiliary driving wedge block is slidably matched with an inclined surface on one side of the auxiliary transmission wedge block, and the auxiliary driving wedge blocks on both sides are respectively fixedly connected to the bottom of the opposite side of the sliding seat on both sides.

[0014] Preferably, the positioning unit includes a side groove, which is opened on the end surface of the silencer block close to the locking pin, and is connected to the mating groove. A positioning block is slidably fitted in the side groove, and a positioning inclined surface is opened on the top of one side of the positioning block close to the inner end surface of the side groove, and an auxiliary inclined surface and a pressing inclined surface are respectively opened on the top and bottom of the other side of the positioning block, and the top end of the auxiliary inclined surface is always higher than the top end of the main driving wedge block.

[0015] Preferably, a guide hole is opened on the inner side surface of the side groove, and the guide hole is connected with the limit hole. A sliding rod is slidably fitted in the guide hole, and the end surface of the sliding rod is fixedly connected to the positioning block. A connecting spring is sleeved on the outer end of the sliding rod, and the two ends of the connecting spring are respectively fixedly connected to the inner side of the side groove and the side surface of the positioning block. An electromagnetic telescopic mechanism is embedded in the top of the silencer block, and a positioning wedge is provided at the bottom telescopic end of the electromagnetic telescopic mechanism, and the positioning wedge corresponds to the position of the auxiliary inclined surface.

[0016] The present invention also provides an application of the above-mentioned silencer locking mechanism in a motor vehicle.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention sleeves two silencer blocks on the fixing plate until the limiting hole and the fixing hole correspond, and then respectively places the upper cushion sleeve and the lower cushion sleeve into the top and bottom of the limiting hole, and passes the fasteners through them, and uses the fasteners to fix them on the vehicle body, so as to realize the soft connection between the lock plate and the vehicle body and reduce the noise during driving.

[0019] 2. After the locking pin is fixed to the vehicle body, the positioning block is slid into the side groove, the positioning inclined surface cooperates with the edge of the positioning wedge block, the rubber positioning block is elastically squeezed downward, and at the same time, the top of the squeezed positioning block abuts against the top of the side groove, thereby increasing the tightness of the upper and lower surfaces of the matching groove against the fixing plate, preventing relative movement between the silencer block and the fixing plate, and making the silencer block and the fastener fit tightly to prevent the fastener from loosening due to reverse rotation.

[0020] 3. When the vehicle door of the present invention is hit, the electromagnetic telescopic mechanism drives the positioning wedge to retract upward, the positioning block limit is released, the connecting spring is extended and reset to make the positioning block move to the outside of the side groove, and after the pressing inclined surface cooperates with the edge of the main driving wedge, the main driving wedge is driven to move downward, the main driving wedge is separated from the main transmission wedge, the driving spring is extended and reset to drive the main transmission wedge and the auxiliary transmission wedge to move, the auxiliary transmission wedge is separated from the auxiliary driving wedge, the reset spring is extended and reset to drive the sliding seats on both sides to close, the limit pin is separated from the pin hole, and the limit on the lock pin is released. When the vehicle door is hit, the lock pin can be quickly separated from the vehicle body, thereby reducing the difficulty of rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the matching structure of the muffler unit and the fixing plate of the present invention;

[0023] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the drive unit of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the present invention;

[0026] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0027] Figure 7 This is a schematic structural diagram of the positional relationship between the positioning wedge and the auxiliary inclined surface of the present invention.

[0028] In the figure: 1, locking plate; 101, fixing seat; 102, locking pin; 103, positioning seat; 104, fixing plate; 105, fixing hole; 2, silencer unit; 201, silencer block; 202, matching groove; 203, limiting hole; 204, upper cushion sleeve; 205, lower cushion sleeve; 3, limiting unit; 301, guide groove; 302, guide rod; 303, sliding seat; 304, limiting pin; 305, pin hole; 306, reset spring; 307, bottom groove; 4, driving unit; 401, elastic telescopic rod ; 402, abutment plate; 403, residual groove; 404, main drive wedge; 405, main transmission wedge; 406, transmission rod; 407, guide seat; 408, drive spring; 409, auxiliary transmission wedge; 410, auxiliary drive wedge; 5, positioning unit; 501, side groove; 502, guide hole; 503, slide bar; 504, positioning block; 505, connecting spring; 506, positioning inclined plane; 507, positioning wedge; 508, auxiliary inclined plane; 509, electromagnetic telescopic mechanism; 510, pressing inclined plane. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-7 The embodiment of the present invention provides a silent locking mechanism, including a lock plate 1 and a lock pin 102. The lock pin 102 is arranged in the middle of the lock plate 1. A fixing seat 101 is arranged in the middle of the lock plate 1. Positioning seats 103 are arranged on both sides of the fixing seat 101. A positioning groove is opened on the top of the positioning seat 103. The lock pin 102 is a U-shaped structure. The two ends of the lock pin 102 are respectively inserted into the positioning grooves on both sides. The positioning seat 103 and the positioning groove are used to limit the lock pin 102, and the positioning seat 103 is used to provide sufficient support for the lock pin 102, thereby improving the structural strength of the lock pin 102 and preventing the lock pin 102 from being deformed during use.

[0031] Both ends of the lock plate 1 are provided with a fixing plate 104, and the fixing plate 104 is provided with a fixing hole 105. The fixing plates 104 on both sides are sleeved with a silencer unit 2. The silencer unit 2 is used to achieve a soft connection between the fixing plate 104 and the vehicle body to reduce noise. A limiting unit 3 is provided in the middle of the fixing seat 101 for limiting the lock pin 102 to prevent the lock pin 102 from falling out of the positioning groove. A driving unit 4 is provided on the lock plate 1 for driving the limiting unit 3. The driving unit 4 is used to drive the limiting unit 3 to lock the lock pin 102. The opposite side of the silencer unit 2 on both sides is provided with a positioning unit 5 for positioning the silencer unit 2. The positioning unit 5 prevents relative movement between the silencer block 201 and the fixing plate 104 by increasing the acting force between the silencer block 201 and the fixing plate 104, and makes the top of the silencer block 201 tightly contact and fit with the fastener to prevent the fastener from reversing and loosening. The fastener is preferably a screw.

[0032] The silencer unit 2 includes a silencer block 201, a mating groove 202 is provided through the middle of the side of the silencer block 201, and the mating groove 202 is the same width as the fixing plate 104. A limiting hole 203 is provided through the top of the silencer block 201, and the minimum aperture of the limiting hole 203 is the same as the fixing hole 105. The limiting hole 203 is connected to the mating groove 202, and the inner top of the limiting hole 203 is correspondingly matched with an upper gasket 204. The upper gasket 204 and the lower gasket 205 are preferably made of silicone. The tops of the limiting hole 203 and the upper gasket 204 are both conical structures. The setting of the conical structure facilitates better matching with the fasteners. The inner bottom of the limiting hole 203 is correspondingly matched with a lower gasket 205, and the upper gasket 204 and the lower gasket 205 correspond at opposite ends.

[0033] The limiting unit 3 includes a guide groove 301 and a bottom groove 307. The guide groove 301 is opened at the top of the fixed seat 101, and the bottom groove 307 passes through the bottom of the fixed seat 101. The guide groove 301 and the bottom groove 307 are connected. A guide rod 302 is arranged in the guide groove 301. Both sides of the guide rod 302 are movably sleeved with sliding seats 303. The sliding seats 303 are slidably matched with the guide groove 301. Limit pins 304 are arranged on the tops of the sliding seats 303 on both sides. Pin holes 305 corresponding to the limit pins 304 are opened on the side of the positioning seat 103. Positioning holes are opened on the opposite sides of the two ends of the locking pin 102. The pin holes 305 correspond to the positions of the positioning holes. Reset springs 306 are sleeved on both ends of the guide rod 302.

[0034] Specifically, the driving unit 4 is used to drive the sliding seats 303 on both sides to move away from each other, so that the limiting pins 304 on both sides can pass through the pin holes 305 on both sides and correspond to the positioning holes on both sides, thereby realizing the positioning of the locking pin 102.

[0035] The driving unit 4 includes two symmetrically arranged elastic telescopic rods 401 and two symmetrically opened residual grooves 403. The two residual grooves 403 are respectively opened on the surface of the fixing plate 104 on both sides. The fixed end of the elastic telescopic rod 401 slides through the residual groove 403 and extends to the other side of the fixing plate 104. The fixed end of the elastic telescopic rod 401 is provided with a contact plate 402, which is used to contact with the vehicle body. The structure of the elastic telescopic rod 401 is as follows: Figure 5 As shown, it is composed of a telescopic column, a sleeve sleeved on the outside of the telescopic column, and a telescopic spring arranged between the end of the telescopic column and the inner end surface of the sleeve. The residual groove 403 is used to provide space for the main driving wedge block 404 to shrink.

[0036] The telescopic end of the elastic telescopic rod 401 is provided with a main driving wedge 404, and the wedge-shaped surfaces of the main driving wedges 404 on both sides are slidably matched with main transmission wedges 405. The upward movement of the main driving wedge 404 drives the main transmission wedge 405 to move horizontally through the wedge-shaped surface. The opposite side of the main transmission wedges 405 on both sides is provided with a transmission rod 406. The transmission rods 406 on both sides are staggered. A guide seat 407 is movably sleeved on the transmission rod 406. The guide seat 407 is fixedly connected to the lock plate 1. The position of the transmission rod 406 between the main transmission wedge 405 and the guide seat 407 is sleeved It is connected to a driving spring 408, and a secondary transmission wedge 409 is provided at one end of the transmission rod 406 away from the main transmission wedge 405. The horizontal movement of the main transmission wedges 405 on both sides respectively drives the staggered transmission rods 406 and secondary transmission wedges 409 on both sides to move horizontally toward each other. The inclined surface of one side of the secondary transmission wedge 409 is slidably matched with a secondary driving wedge 410. The secondary driving wedges 410 on both sides are respectively fixedly connected to the bottom of the opposite side of the sliding seat 303 on both sides. The horizontal movement of the secondary transmission wedges 409 on both sides respectively drives the secondary driving wedges 410 on both sides to move horizontally in the opposite directions.

[0037] The positioning unit 5 includes a side groove 501, which is opened on the end surface of the silencer block 201 close to the locking pin 102. The side groove 501 is connected to the matching groove 202. A positioning block 504 is slidably fitted in the side groove 501. A positioning slope 506 is opened on the top of one side of the positioning block 504 close to the inner end surface of the side groove 501, and an auxiliary slope 508 is opened on the top of the other side of the positioning block 504. The positioning block 504 is preferably made of rubber. In the initial state, the positioning block 504 and the positioning slope 506 are located outside the side groove 501.

[0038] Specifically, the positioning inclined surface 506 is provided on a side of the positioning block 504 close to the positioning wedge 507 , and the auxiliary inclined surface 508 and the pressing inclined surface 510 are located on a side of the positioning block 504 away from the positioning wedge 507 .

[0039] A guide hole 502 is provided on the inner side of the side groove 501, and the guide hole 502 is connected to the limit hole 203. A slide rod 503 is slidably fitted in the guide hole 502, and the end face of the slide rod 503 is fixedly connected to the positioning block 504. The cooperation between the guide hole 502 and the slide rod 503 provides a guide for the horizontal movement of the positioning block 504. A connecting spring 505 is sleeved on one end of the outer side of the slide rod 503, and the two ends of the connecting spring 505 are respectively fixedly connected to the inner side of the side groove 501 and the side of the positioning block 504. An electromagnetic telescopic mechanism 509 is embedded on the top of the silencer block 201. The electromagnetic telescopic mechanism 509 is preferably an electromagnetic lock, and the telescopic pin of the electromagnetic lock retracts when powered on and pops up when powered off. The electromagnetic lock is in the powered off state in the initial state. A positioning wedge block 507 is provided at the bottom telescopic end of the electromagnetic telescopic mechanism 509, and the wedge surface of the positioning wedge block 507 is opened on the side away from the positioning block 504.

[0040] When the above-mentioned silencer locking mechanism is used on a motor vehicle, the two silencer units 2 are first assembled on the fixing plates 104 on both sides respectively. During assembly, the two silencer blocks 201 are respectively sleeved on the ends of the fixing plates 104 on both sides through the matching grooves 202, so that the limiting holes 203 and the fixing holes 105 correspond to each other up and down, and then the upper cushion sleeve 204 is placed on the top of the limiting hole 203, and the lower cushion sleeve 205 is placed on the bottom of the limiting hole 203, so that the upper cushion sleeve 204 and the lower cushion sleeve 205 correspond to each other, and finally the fastener is passed through the upper cushion sleeve 204 and the lower cushion sleeve 205, so that the contact plate 402 contacts the surface of the vehicle body installation location, the fastener is screwed correspondingly to the fastening holes on the vehicle body, and the fastener is tightened, that is, the silencer block 201, the upper cushion sleeve 204 and the lower cushion sleeve 205 are used to realize the soft connection between the fixing plate 104, the lock plate 1 and the vehicle body, thereby reducing the noise value during driving.

[0041] During the tightening process of the fasteners, the fixing plate 104 and the locking plate 1 gradually approach the surface of the vehicle body where they are installed, and the contact plate 402 contacts the vehicle body. As the wedge-shaped surface of the main driving wedge block 404 contacts the wedge-shaped surface of the main transmission wedge block 405, the elastic telescopic rod 401 is compressed first. When the telescopic spring inside the elastic telescopic rod 401 is compressed to a specific length, the elastic resistance of the internal telescopic spring reaches a maximum, and the telescopic column and sleeve of the elastic telescopic rod 401 begin to move upward synchronously, while driving the main driving wedge block 404 to move upward. The main driving wedge block 404 moves upward through the wedge-shaped surface between the main transmission wedge block 405 and the main transmission wedge block 405. The cooperation of the surfaces enables the main transmission wedge block 405 to drive the transmission rod 406 and the auxiliary transmission wedge block 409 to move horizontally toward one side of the fixed seat 101. At the same time, the driving spring 408 is compressed, and the staggered auxiliary transmission wedge blocks 409 on both sides respectively drive the auxiliary driving wedge blocks 410 on both sides to move horizontally by cooperating with the wedge-shaped surfaces of the auxiliary driving wedge blocks 410 staggered on both sides, and respectively drive the sliding seats 303 on both sides to move backwards, so that the limit pins 304 on both sides respectively pass through the pin holes 305 on both sides and cooperate with the positioning holes on both sides, so that the positioning of the two ends of the locking pin 102 can be achieved while fixing the locking plate 1.

[0042] After the silencer unit 2, the fixing plate 104 and the locking plate 1 are fixed to the vehicle body by means of fasteners, the positioning block 504 is slid into the side groove 501, and the connecting spring 505 is compressed. During the sliding process of the positioning block 504, the positioning inclined surface 506 first cooperates with the bottom edge of the positioning wedge block 507 close to the notch of the side groove 501, and the positioning block 504 is squeezed downward and elastically deformed. After the positioning inclined surface 506 completely passes through the bottom edge of the positioning wedge block 507, the top horizontal surface of the positioning block 504 contacts the bottom horizontal surface of the positioning wedge block 507. At this time, the extrusion force on the positioning block 504 is the largest. After the positioning block 504 continues to move into the side groove 501, the wedge-shaped surface of the positioning wedge block 507 close to the inner side of the side groove 501 fits with the auxiliary inclined surface 508. At this time, the positional relationship between the positioning block 504 and the positioning wedge block 507 is as follows: Figure 7 As shown, the direction of the arrow in the figure represents the movement direction of the positioning block 504. At this time, the positioning wedge block 507 positions the positioning block 504.

[0043] At this time, the squeezed positioning block 504 provides an upward elastic reverse force and presses against the top of the top side groove 501, so that the upper and lower surfaces of the matching groove 202 are in closer contact with the fixing plate 104, preventing relative movement between the silencer block 201 and the fixing plate 104, and at the same time making the top surface of the silencer block 201 and the top of the fastener fit more closely, preventing the fastener from rotating in the opposite direction and causing the silencer block 201 to loosen.

[0044] However, when a vehicle body collides with a vehicle during driving, the door will be deformed by the impact, which will cause the locking mechanism of the door to be locked and difficult to open, increasing the difficulty of rescue. In order to solve the above problem:

[0045] A pressing inclined surface 510 is provided on the side of the positioning block 504 below the auxiliary inclined surface 508 , and the top of the auxiliary inclined surface 508 is always higher than the top of the main driving wedge block 404 .

[0046] As can be seen from the above, during normal driving of the vehicle, the connecting spring 505, the elastic telescopic rod 401, the driving spring 408 and the reset spring 306 are all in a compressed state. When the collision detection system in the vehicle body detects a collision accident, power is quickly supplied to the electromagnetic telescopic mechanisms 509 on both sides, so that the telescopic pins of the electromagnetic telescopic mechanisms 509 are quickly contracted, and the positioning wedge block 507 moves upward to release the limit on the positioning block 504. The compressed connecting spring 505 is quickly reset and drives the positioning block 504 to quickly move to one side of the main driving wedge block 404, so that the pressing inclined surface 510 at the bottom of the main driving wedge block 404 cooperates with the top edge of the main driving wedge block 404. Under the action of the pressing inclined surface 510, the main driving wedge block 404 moves downward into the residual groove 403. At the same time, the wedge surface of the main driving wedge block 404 is separated from the wedge surface of the main transmission wedge block 405, and the compressed driving spring 408 is quickly extended and reset to drive the main transmission wedge block 405. When the moving wedge block 405 moves toward one side of the silencer block 201 and the positioning block 504 reaches the longest extension distance and the main transmission wedge block 405 moves toward the side of the silencer block 201 to the maximum, the positioning block 504 and the main transmission wedge block 405 are still not in contact, and at the same time, driven by the staggered transmission rods 406 on both sides, the staggered auxiliary transmission wedge blocks 409 on both sides are driven to move toward one side of the silencer block 201, so that the auxiliary transmission wedge block 409 is separated from the auxiliary driving wedge block 410, and the compressed return springs 306 on both sides of the guide groove 301 are quickly extended and reset, and at the same time, the sliding seats 303 on both sides are driven to close together and drive the limit pins 304 on both sides to move toward each other, and the limit pins 304 are separated from the pin holes 305, so that the limit pin 304 can release the limit on the lock pin 102, and then when the door is hit, the lock pin 102 can be quickly separated from the lock plate 1, so that the door can be opened quickly, reducing the difficulty of rescue and winning precious time for rescuing the driver and passengers.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A silent locking mechanism, comprising a locking plate (1) and a locking pin (102), characterized in that: The lock pin (102) is arranged at the middle part of the lock plate (1), a fixing seat (101) is arranged at the middle part of the lock plate (1), positioning seats (103) are arranged on both sides of the fixing seat (101), a positioning groove is arranged on the top of the positioning seat (103), the lock pin (102) is a U-shaped structure, positioning holes are arranged on the opposite sides of both ends of the lock pin (102), and the two ends of the lock pin (102) are respectively inserted into the positioning grooves on both sides, and fixing plates (104) are arranged at both ends of the lock plate (1), and fixing holes (105) are arranged on the fixing plates (104); The fixing plates (104) on both sides are sleeved with silencer units (2); a limiting unit (3) for limiting the position of the lock pin (102) is provided in the middle of the fixing seat (101); a driving unit (4) for driving the limiting unit (3) is provided on the lock plate (1); and a positioning unit (5) for positioning the silencer units (2) is provided on opposite sides of the silencer units (2); The muffler unit (2) comprises a muffler block (201), a matching groove (202) is provided through the middle of the side of the muffler block (201), a limiting hole (203) is provided through the top of the muffler block (201), the limiting hole (203) is communicated with the matching groove (202), an upper gasket (204) is correspondingly matched at the inner top of the limiting hole (203), and a lower gasket (205) is correspondingly matched at the inner bottom of the limiting hole (203).

2. The silent locking mechanism according to claim 1, characterized in that: The matching groove (202) has the same width as the fixing plate (104), the top of the limiting hole (203) is a conical structure, the minimum aperture of the limiting hole (203) is the same as the fixing hole (105), and the opposite ends of the upper gasket (204) and the lower gasket (205) correspond to each other.

3. The silent locking mechanism according to claim 1, characterized in that: The limiting unit (3) comprises a guide groove (301) and a bottom groove (307); the guide groove (301) is provided at the top of the fixing seat (101); the bottom groove (307) runs through the bottom of the fixing seat (101); and the guide groove (301) and the bottom groove (307) are connected.

4. The silent locking mechanism according to claim 3, characterized in that: A guide rod (302) is provided in the guide groove (301), and sliding seats (303) are movably sleeved on both sides of the guide rod (302). The sliding seats (303) are slidably matched with the guide groove (301), and limit pins (304) are provided on the tops of the sliding seats (303) on both sides. Pin holes (305) corresponding to the limit pins (304) are opened on the side of the positioning seat (103), and return springs (306) are sleeved on both ends of the guide rod (302).

5. The silent locking mechanism according to claim 4, characterized in that: The driving unit (4) comprises two symmetrically arranged elastic telescopic rods (401) and two symmetrically opened residual grooves (403); the two residual grooves (403) are respectively opened on the surfaces of the fixing plates (104) on both sides; the fixed ends of the elastic telescopic rods (401) slide through the residual grooves (403) and extend to the other side of the fixing plates (104); and the fixed ends of the elastic telescopic rods (401) are provided with a contact plate (402).

6. The silent locking mechanism according to claim 5, characterized in that: The telescopic end of the elastic telescopic rod (401) is provided with a main driving wedge block (404), and the wedge-shaped surfaces of the main driving wedge blocks (404) on both sides are slidably matched with main transmission wedge blocks (405), and the opposite sides of the main transmission wedge blocks (405) on both sides are provided with transmission rods (406), and the transmission rods (406) on both sides are staggered. A guide seat (407) is movably sleeved on the transmission rod (406), and the guide seat (407) is fixedly connected to the lock plate (1). A driving spring (408) is sleeved on the transmission rod (406) at a position between the main transmission wedge block (405) and the guide seat (407); an auxiliary transmission wedge block (409) is provided at one end of the transmission rod (406) away from the main transmission wedge block (405); a secondary driving wedge block (410) is slidably matched with an inclined surface on one side of the secondary transmission wedge block (409); and the secondary driving wedge blocks (410) on both sides are fixedly connected to the bottom of the opposite side of the sliding seat (303) on both sides.

7. The silent locking mechanism according to claim 1, characterized in that: The positioning unit (5) comprises a side groove (501), the side groove (501) being formed on the end surface of the muffler block (201) close to the locking pin (102), the side groove (501) being connected to the matching groove (202), a positioning block (504) being slidably fitted in the side groove (501), a positioning inclined surface (506) being formed on the top of one side of the positioning block (504) close to the inner end surface of the side groove (501), an auxiliary inclined surface (508) and a pressing inclined surface (510) being formed on the top and bottom of the other side of the positioning block (504), respectively, the top end of the auxiliary inclined surface (508) being always higher than the top end of the main driving wedge block (404).

8. The silent locking mechanism according to claim 7, characterized in that: The inner side surface of the side groove (501) is provided with a guide hole (502), the guide hole (502) is communicated with the limiting hole (203), a slide rod (503) is slidably fitted in the guide hole (502), the end surface of the slide rod (503) is fixedly connected to the positioning block (504), a connecting spring (505) is sleeved on one end of the outer side of the slide rod (503), the two ends of the connecting spring (505) are respectively fixedly connected to the inner side of the side groove (501) and the side surface of the positioning block (504), an electromagnetic telescopic mechanism (509) is embedded in the top of the muffler block (201), and a positioning wedge block (507) is provided at the bottom telescopic end of the electromagnetic telescopic mechanism (509), and the positioning wedge block (507) corresponds to the position of the auxiliary inclined surface (508).

9. Use of the silent locking mechanism according to any one of claims 1 to 8 in a motor vehicle.

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