Automobile seat backrest lock

Abstract

The utility model discloses a backrest lock of rear row of car seat, including the board body, be provided with first rivet and second rivet on the board body, the locking plate of rotation connection in first rivet, the unlocking plate and the stop plate of rotation connection in second rivet, be connected with second elastic unit between the board body and the stop plate, through second elastic unit drive stop plate and locking plate abut, be provided with first elastic unit between locking plate and unlocking plate, set up on the touch switch of board body, through second elastic unit drive locking plate and stop plate abut, make locking plate and touch switch abut. The utility model provides a backrest lock of rear row of car seat, can drive locking plate and unlocking plate keep rotating towards through first elastic unit, and then make locking plate and unlocking plate abut complete locking, through the touch of touch switch setting up on locking plate and board body close, and then can provide car seat locking information, and the driver rear seat locking state is convenient to prompt.

Description

Technical Field

[0001] This utility model relates to the field of automotive backrest lock manufacturing technology, specifically to a rear seat backrest lock for automobiles. Background Technology

[0002] With the development of the global automotive industry, consumers have increasingly higher demands for the comfort, safety, and cost-effectiveness of automobiles. As one of the key components inside a car that most directly affects passenger comfort and safety, the design and function of seats are becoming increasingly important in automobile manufacturing. Among these, backrest locks are commonly used in rear seats.

[0003] According to invention patent application CN109969050A, published on 2019-07-05, a car rear seat backrest lock is disclosed, including a lock housing and a base plate, the base plate covering the lock housing. The lock housing is characterized by: a drive handle rotatably mounted on its upper end, a first elastic reset component on the drive handle, and a drive pin at its lower end; a ratchet and a pawl with locking engagement inside the lock housing, the pawl and ratchet being rotatably mounted, the pawl positioned above the ratchet; a drive groove at one end of the pawl, the drive pin disposed within the drive groove; the other end of the pawl abutting against the lower end of a lifting block; a second elastic reset component between the upper end of the lifting block and the lock housing; a limiting strip at the lower end of the lifting block; a lock groove and a third elastic reset component on the ratchet; matching mounting grooves on the lock housing and base plate corresponding to the lock groove; a shock-absorbing mechanism between the inner rotating side of the ratchet and the lock housing; and a maximum rotation angle limiting protrusion on the ratchet, which engages with the lower end of the limiting strip. Its main technical advantages are: reasonable structure, which can eliminate the fit gap caused by the machining error of the backrest lock and prevent abnormal noise.

[0004] Existing rear seat backrest locks do not alert the driver when locked, and the driver cannot confirm whether the backrest lock is fully locked from the driver's seat before driving. Therefore, a new car seat backrest lock is proposed to solve the problem of the driver not being able to confirm whether the backrest lock is fully locked from the driver's seat before driving. Utility Model Content

[0005] The purpose of this invention is to provide a car seat backrest lock, which aims to solve the problem in the prior art that the driver cannot confirm whether the backrest lock is fully locked from the driver's seat before driving.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A car seat backrest lock includes a plate, on which a first rivet and a second rivet are disposed, and further includes: Rotate the locking plate connected to the first rivet; The unlocking plate and the stop plate are rotatably connected to the second rivet. A second elastic unit is connected between the plate and the stop plate. The stop plate is driven to abut against the locking plate by the second elastic unit. A first elastic unit is provided between the locking plate and the unlocking plate. Touch switches are installed on the board. The second elastic unit drives the locking plate to abut against the stop plate, causing the locking plate to abut against the touch switch.

[0007] Preferably, a positioning rivet is fixedly installed on the plate, a connecting screw hole is provided on the plate, a positioning rod and a connecting hole are provided on the touch switch, the positioning rod is inserted into the positioning rivet, the touch switch is connected to the connecting hole by a screw, and a gasket is provided between the touch switch and the plate.

[0008] Preferably, the stop plate is provided with a bending portion, which is driven by the second elastic unit to abut against the unlocking plate.

[0009] Preferably, the locking plate has a locking groove, an abutting surface, and an abutting protrusion, which is driven by the second elastic unit to abut against the abutting surface.

[0010] Preferably, a third rivet is connected to the plate, the second elastic unit is connected to the third rivet, one end of the second elastic unit abuts against the plate, and the other end is connected to the stop plate.

[0011] Preferably, the locking plate is provided with a plastic coating layer.

[0012] In the above technical solution, the car seat backrest lock provided by this utility model has the following beneficial effects: This utility model uses a first elastic unit to drive the locking plate and the unlocking plate to rotate in opposite directions, thereby making the locking plate abut against the unlocking plate to complete the locking. The locking plate is closed by contacting a touch switch on the plate body, and the touch switch provides a signal to provide the vehicle's seat locking information, which can conveniently remind the driver of the rear seat locking status and improve driving safety. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A three-dimensional structural schematic diagram provided for an embodiment of this utility model; Figure 2 This is a schematic diagram of the overall assembly structure provided for an embodiment of the present utility model; Figure 3 This is a schematic diagram of the touch switch assembly provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the unlocked state structure provided in an embodiment of the present utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Plate body; 11. Second elastic unit; 12. First elastic unit; 13. Plastic-coated block; 14. Positioning rivet; 2. First rivet; 3. Second rivet; 4. Locking plate; 41. Locking groove; 42. Abutting surface; 43. Plastic-coated layer; 5. Unlocking plate; 6. Stop plate; 61. Bending part; 62. Abutting protrusion; 7. Touch switch; 71. Positioning rod; 72. Connecting hole; 73. Washer; 8. Third rivet. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Please see Figure 1 — Figure 4 A car seat backrest lock includes a plate 1, on which a first rivet 2 and a second rivet 3 are disposed, and further includes: Rotate the locking plate 4 connected to the first rivet 2; The unlocking plate 5 and the stop plate 6 are rotatably connected to the second rivet 3. A second elastic unit 11 is connected between the plate body 1 and the stop plate 6. The stop plate 6 is driven to abut against the locking plate 4 by the second elastic unit 11. A first elastic unit 12 is provided between the locking plate 4 and the unlocking plate 5. The touch switch 7 is installed on the board 1; The second elastic unit 11 drives the locking plate 4 to abut against the stop plate 6, so that the locking plate 4 abuts against the touch switch 7.

[0018] As an embodiment of the present invention, a first rivet 2 and a second rivet 3 are fixedly installed on the outer wall of the plate 1. The locking plate 4 is rotatably connected to the first rivet 2 and connected to the plate 1 through the first rivet 2. The unlocking plate 5 is rotatably connected to the second rivet 3 and connected to the plate 1 through the second rivet 3. During production and processing, the locking plate 4 and the unlocking plate 5 are connected to the plate 1 by riveting the ends of the first rivet 2 and the second rivet 3.

[0019] As a further embodiment provided by this utility model, such as Figure 2As shown, it also includes a stop plate 6, which is also connected to the plate body 1 by a second rivet 3. A second elastic unit 11 is connected between the stop plate 6 and the plate body 1. Specifically, the second elastic unit 11 is a torque spring. The stop plate 6 and the locking plate 4 are driven by the elasticity of the second elastic unit 11 itself. The stop plate 6 and the locking plate 4 are connected to restrict the rotation of the locking plate 4 to complete the locking.

[0020] A first elastic unit 12 is connected between the unlocking plate 5 and the locking plate 4. Specifically, the first elastic unit 12 is a tension spring. The first elastic unit 12 drives the unlocking plate 5 and the locking plate 4 to rotate in opposite directions. Points for connecting the first elastic unit 12 are provided on one end of the unlocking plate 5 and the locking plate 4. The first elastic unit 12 can drive one end of the locking plate 4 and one end of the unlocking plate 5 to rotate in opposite directions.

[0021] A sound-absorbing sponge is fixedly installed in the first elastic unit 12 to eliminate the vibration of the spring.

[0022] A touch switch 7 is fixedly installed on the outer wall of one side of the plate 1. When the locking plate 4 and the unlocking plate 5 are locked, the locking plate 4 abuts against the touch switch 7. At this time, the touch switch 7 is closed and can provide a signal to the vehicle system to tell that the backrest lock is in the locked state.

[0023] This utility model uses the first elastic unit 12 to drive the locking plate 4 and the unlocking plate 5 to rotate in opposite directions, thereby making the locking plate 4 and the unlocking plate 5 come into contact and lock. The locking plate 4 is closed by contacting the touch switch 7 provided on the plate body 1. The touch switch provides a signal, which can then provide the vehicle's seat locking information to the driver, making it convenient to remind the driver of the rear seat locking status and improving driving safety.

[0024] As an embodiment provided by this utility model, such as Figure 2 and Figure 1 As shown, a bending portion 61 is provided on the outer wall of the stop plate 6. The stop plate 6 abuts against the unlocking plate 5 through the bending portion 61. The second elastic unit 11 can drive the stop plate 6 to rotate toward the unlocking plate 5, so that the bending portion 61 provided on the stop plate 6 can abut against the side wall of the unlocking plate 5.

[0025] As a further embodiment provided by this utility model, such as Figure 2 As shown, a locking groove 41 is provided on the locking plate 4, an abutting surface 42 is provided on the locking plate 4, and an abutting protrusion 62 is provided on the stop plate 6. The stop plate 6 is driven to rotate toward the locking plate 4 by the second elastic unit 11, while the locking plate 4 is driven to rotate toward the unlocking plate 5 by the first elastic unit 12. Finally, when locked, the abutting protrusion 62 abuts against the abutting surface 42 to complete the locking.

[0026] Furthermore, such as Figure 4 As shown, a third rivet 8 is provided on the plate 1, and a second elastic unit 11 is connected to the third rivet 8. One end of the second elastic unit 11 abuts against the plate 1, and the other end is connected to the stop plate 6. The stop plate 6 is then driven to rotate toward the locking plate 4 by the second elastic unit 11.

[0027] An insertion groove is provided on the outer wall of the plate 1, and a plastic-coated block 13 is provided on the insertion groove. The plastic-coated block 13 and the plastic-coated layer 43 provided on the locking plate 4 can directly abut against the lock when the lock is inserted, preventing the lock from directly contacting the plate 1 or the locking plate 4 and causing noise.

[0028] like Figure 3 and Figure 4 As shown, a positioning rivet 14 is fixedly installed on the plate 1, and a connecting screw hole is opened on the plate 1. The touch switch 7 is provided with a positioning rod 71 and a connecting hole 72. The positioning rod 71 is inserted into the positioning rivet 14. The touch switch 7 is connected to the connecting hole 72 by screws. A washer 73 is provided between the touch switch 7 and the plate 1. The touch switch 7 is connected to the positioning rivet 14 by the positioning rod 71 to limit the rotation of the touch switch 7, and is completely fixed to the plate 1 by screws and connecting hole 72.

[0029] Working principle: In the unlocked state, by inserting the latch into the locking slot 41, the locking plate 4 is rotated by an external force. The rotation of the locking plate 4 drives the stop plate 6 to rotate by a certain range, causing the abutment protrusion 62 to move on the abutment surface 42. When the other side of the abutment surface 42 is completely moved, the stop plate 6 is driven to rotate under the action of the second elastic unit 11, so that the other side of the abutment protrusion 62 abuts against the abutment surface 42, completing the locking. At the same time, the locking plate 4 abuts against the touch switch 7 during the rotation. The touch switch 7 closes and sends a locking signal, indicating to the driver that the rear seat is in the locked state.

[0030] This car seat rear backrest lock has a simple structure and is easy to operate. Through the cooperation of the first elastic unit 12 and the second elastic unit 11, it achieves automatic locking and unlocking of the locking plate 4 and the unlocking plate 5. Simultaneously, the touch switch 7 allows the driver to monitor the locking status of the rear seats in real time, improving driving safety. Furthermore, the plastic-coated block 13 and plastic-coated layer 43 effectively reduce noise generated by direct contact between the latch and the plate 1 or locking plate 4, enhancing the user experience.

[0031] It should be noted that the attached drawings of this utility model only show the backrest lock on one side. In actual production, the backrest lock on the opposite side can be obtained by mirroring the image from the left and right directions.

[0032] The tension spring and torque spring mentioned in this article have elastic coefficients that meet the technical requirements of this utility model.

[0033] Those skilled in the art will understand that other similar connection methods can also achieve this utility model. For example, welding, bonding, or screwing.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A car seat backrest lock, comprising a plate (1), wherein a first rivet (2) and a second rivet (3) are disposed on the plate (1), characterized in that, Also includes: Rotate the locking plate (4) connected to the first rivet (2); The unlocking plate (5) and the stop plate (6) connected to the second rivet (3) are rotated. A second elastic unit (11) is connected between the plate body (1) and the stop plate (6). The stop plate (6) is driven to abut against the locking plate (4) by the second elastic unit (11). A first elastic unit (12) is provided between the locking plate (4) and the unlocking plate (5). The touch switch (7) is installed on the plate (1); The second elastic unit (11) drives the locking plate (4) to abut against the stop plate (6), so that the locking plate (4) abuts against the touch switch (7).

2. The car seat rear backrest lock according to claim 1, characterized in that, A positioning rivet (14) is fixedly installed on the plate (1). A connecting screw hole is provided on the plate (1). A positioning rod (71) and a connecting hole (72) are provided on the touch switch (7). The positioning rod (71) is inserted into the positioning rivet (14). The touch switch (7) is connected to the connecting hole (72) by a screw. A gasket (73) is provided between the touch switch (7) and the plate (1).

3. The car seat rear backrest lock according to claim 1, characterized in that, The stop plate (6) is provided with a bending part (61), which is driven by the second elastic unit (11) to abut against the unlocking plate (5).

4. The car seat rear backrest lock according to claim 1, characterized in that, The locking plate (4) has a locking groove (41) and an abutting surface (42). The stop plate (6) has an abutting protrusion (62). The second elastic unit (11) drives the abutting protrusion (62) to abut against the abutting surface (42).

5. The car seat rear backrest lock according to claim 1, characterized in that, The plate (1) is connected to a third rivet (8), and the second elastic unit (11) is connected to the third rivet (8). One end of the second elastic unit (11) abuts against the plate (1), and the other end is connected to the stop plate (6).

6. The car seat rear backrest lock according to claim 1, characterized in that, The locking plate (4) is provided with a plastic coating layer (43).

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