An electric bolt assembly

Abstract

A kind of electric bolt assembly, including motor assembly, gear, motor mounting frame, fixed plate, guide pin, toothed plate subassembly, buckle plate;Motor assembly is fixed on motor mounting frame, motor assembly is connected with gear, motor mounting frame is installed on fixed plate;Fixed plate is welded with two guide pins on the side away from motor assembly, toothed plate subassembly is arranged between fixed plate and buckle plate, including toothed plate, bolt installed on toothed plate, upper slider set on the upper end of toothed plate;The lower end of toothed plate is equipped with the tooth engaged with gear, is processed with installation groove in the position opposite to guide pin in middle, installation groove is equipped with middle slider, middle slider is processed with the guide groove matched with guide pin;Buckle plate is fixedly connected with fixed plate, the position of avoiding slot is set on buckle plate opposite to bolt, the position of limiting baffle cover matched with upper slider is set on the opposite position of upper slider, bolt is connected with seat backrest.This mechanism is convenient to use, can effectively prevent the problems of jamming, abnormal noise and abnormal wear.

Description

Technical Field

[0001] This utility model belongs to the field of automotive seat technology and relates to an electric locking bolt assembly. Background Technology

[0002] Existing car seat backrests are rotatably connected to the rear end of the seat cushion via a backrest adjustment device, and the angle of the seat backrest can be adjusted through this device. Chinese Patent CN 115817295 A discloses an invention patent entitled "Adjustment Device," which can electrically adjust the seat backrest angle. However, it has the following shortcomings: ① During operation, the rack cantilever is too long, resulting in weak resistance to lateral load components and a tendency to bend under stress. This leads to concentrated force on one side of the plastic guide, causing uneven wear and loosening due to abnormal wear after a period of use; ② Prolonged exposure to lateral forces can cause the exposed rack to deform, leading to functional failure; ③ Exposed racks are prone to internal grease loss, and combined with uneven wear, this makes the internal damping force extremely unstable, affecting the constant output of the motor power and posing a risk of increased noise in the later stages. Chinese patent CN 112977194A discloses an invention patent entitled "Seat Backrest Angle Adjuster and Automobile Seat Including the Same", which is a manual structure and has the following shortcomings: ① It relies on a pull cable and a coil spring to achieve the opening and closing self-locking function, which is inconvenient to operate when adjusting the seat angle forward; ② It occupies a lot of space in the vehicle layout during installation; ③ The spring and pull cable will make abnormal noise when working, and there are many failure modes. Summary of the Invention

[0003] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an electric locking bolt assembly. This mechanism adopts an electric drive form, is easy to use, and can effectively prevent problems such as jamming, abnormal noise and abnormal wear. It can fully realize the lubrication function throughout the entire life cycle and continuously ensure the stable performance of the product.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electric locking bolt assembly includes a motor assembly, a gear, a motor mounting bracket, a fixing plate, guide pins, a gear plate sub-assembly, and a buckle plate. The motor assembly is fixed to the motor mounting bracket and connected to the gear for driving gear rotation. The motor mounting bracket is mounted on the fixing plate. The motor mounting bracket and the fixing plate have clearance holes opposite to the gear. Two guide pins are welded to the fixing plate on the side away from the motor assembly for guiding the movement of the gear plate sub-assembly and for load-bearing. The gear plate sub-assembly is positioned between the fixing plate and the buckle plate. Between the plates, there is a toothed plate, a locking bolt mounted on the toothed plate, and an upper slider disposed on the upper end of the toothed plate; wherein, the lower end of the toothed plate is provided with teeth that mesh with gears, and a mounting groove is machined in the middle at a position opposite to the guide pin, a middle slider is installed at the mounting groove, and a guide groove that cooperates with the guide pin is machined on the middle slider; the buckle plate is fixedly connected to the fixing plate, and the buckle plate is provided with a clearance groove at a position opposite to the locking bolt, and a limiting cover adapted to the upper slider at a position opposite to the upper slider, and the locking bolt passes through the clearance groove on the buckle plate for connection with the seat back.

[0006] As a preferred embodiment of this utility model, the toothed plate is composed of toothed plate A and toothed plate B. Toothed plate A and toothed plate B are overlapped and connected into a whole by laser welding. A rectangular assembly groove is machined on the toothed plate at the position opposite to the bolt. One end of the bolt is machined with an assembly part that matches the rectangular assembly groove. The assembly part of the bolt is inserted into the rectangular assembly groove and assembled on the toothed plate by welding and riveting. The upper slider and the middle slider are connected to the toothed plate by inlay injection molding process.

[0007] As a preferred embodiment of this utility model, the buckle plate is provided with small through holes at positions opposite to the guide pins and with large through holes at positions opposite to the power output shaft of the motor assembly. A bushing is installed at the large through hole, and the shaft end of the power output shaft of the motor assembly is inserted into the bushing after installation.

[0008] As a preferred embodiment of this utility model, the fixing plate is further provided with a weight reduction groove, which is arranged opposite to the clearance groove on the buckle plate, and the electric locking bolt assembly is provided with mounting holes for connection with the sheet metal of the whole vehicle.

[0009] Advantages and beneficial effects of this utility model:

[0010] (1) The electric locking bolt assembly provided by this utility model adopts an electric drive form. Compared with the manual structure, it eliminates the unlocking cable and return spring, reduces the space occupied by the vehicle layout, and can be controlled by buttons or the vehicle voice system. It is convenient to use and solves the problems of laborious adjustment, cumbersome operation and large space occupation of conventional manual form.

[0011] (2) The toothed plate assembly of the electric locking bolt assembly provided by this utility model is equipped with a double guide of upper slider and middle slider. Under normal working conditions, the load-bearing requirements can be met by the middle slider, guide pin, fixing plate and buckle plate. When subjected to a large lateral force, the upper slider participates in the Y and Z direction support of the whole vehicle, which greatly improves the stability of the toothed plate assembly. It can effectively prevent the problems of jamming, abnormal noise and abnormal wear. It solves the problems of jamming, wear and abnormal noise and functional failure caused by the excessively long cantilever and single guide support of conventional electric locking bolts after lateral force deformation.

[0012] (3) The tooth plate assembly of the electric locking bolt assembly provided by this utility model is arranged in the closed space of the fixing plate and the buckle plate, so that the grease between the gear and the tooth plate sub-assembly can be retained for a long time, and can fully realize the lubrication function throughout the entire life cycle, and continuously ensure the stable performance of the product. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0014] Figure 1 Left side view of the electric locking bolt assembly provided by this utility model Figure 1 ;

[0015] Figure 2 The left side view of the electric bolt assembly hidden behind the buckle plate provided by this utility model Figure 1 (Position 1);

[0016] Figure 3 The left side view of the electric bolt assembly hidden behind the buckle plate provided by this utility model Figure 2 (Position 2);

[0017] Figure 4 Right side view of the electric bolt assembly provided by this utility model Figure 1 (Position 1);

[0018] Figure 5 Right side view of the electric bolt assembly provided by this utility model Figure 2 (Position 2);

[0019] Figure 6 The electric bolt assembly provided by this utility model conceals the motor and fixing plate on the right side. Figure 1 ;

[0020] Figure 7 The electric bolt assembly provided by this utility model conceals the motor and fixing plate on the right side. Figure 2 ;

[0021] Figure 8 Exploded view of the electric locking bolt assembly provided by this utility model;

[0022] Figure 9 A schematic diagram of the toothed plate provided by this utility model;

[0023] Figure 10 This is a schematic diagram of the toothed plate sub-assembly provided by this utility model.

[0024] Reference numerals in the attached drawings: 1. Motor assembly; 2. Gear; 3. Motor mounting bracket; 4. Fixing plate; 5. Guide pin; 6. Upper slider; 7. Locking bolt; 8. Buckle plate; 9. Middle slider; 10. A toothed plate; 11. B toothed plate; 12. Motor fixing bolt; 13. Toothed plate sub-assembly; 20. Assembly part; 701. Small through hole; 801. Large through hole; 802. Clearance groove; 803. Limiting cover; 804. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0027] like Figures 1 to 10As shown, this embodiment provides an electric locking bolt assembly for adjusting the angle of the rear seat back of a car. In use, the electric locking bolt assembly is fixed to the vehicle's sheet metal, and the locking bolts on it are connected to the seat back. The reciprocating motion of the locking bolts, driven by a motor, achieves the forward and backward adjustment of the seat back angle. The electric locking bolt assembly includes a motor assembly 1, a gear 2, a motor mounting bracket 3, a fixing plate 4, guide pins 5, a gear plate sub-assembly 20, and a buckle plate 8. The motor assembly 1 is fixed to the motor mounting bracket 3 and connected to the gear 2 to drive its rotation. The motor mounting bracket 3 is screwed onto the fixing plate 4 using motor fixing bolts 13. The motor mounting bracket 3 and the fixing plate 4 have clearance holes (unmarked) at positions opposite to the gear 2. Two guide pins 5 are welded to the fixing plate 4 on the side facing away from the motor assembly 1, for the gear plate... The sub-assembly 20 serves as a motion guide and load-bearing component. The toothed plate sub-assembly 20 is positioned between the fixed plate 4 and the buckle plate 8, and includes a toothed plate, a locking bolt 7 mounted on the toothed plate, and an upper slider 6 positioned at the upper end of the toothed plate. The lower end of the toothed plate has teeth that mesh with the gear 2, and a mounting groove (unmarked) is machined in the middle at a position opposite to the guide pin 5. A middle slider 10 is mounted at the mounting groove, and a guide groove (unmarked) is machined on the middle slider 10 to cooperate with the guide pin 5. The buckle plate 8 is fixedly connected to the fixed plate 4, specifically by laser welding. The buckle plate 8 has a clearance groove 803 at a position opposite to the locking bolt 7, and a limiting cover 804 adapted to the upper slider 6 at a position opposite to the upper slider 6. The locking bolt 7 passes through the clearance groove on the buckle plate 8 to connect with the backrest locking mechanism on the seat back.

[0028] It should be noted that the backrest locking mechanism on the seat back includes a lock body and a lock hook. The lock hook is connected to the lock bolt 7. In this embodiment, the backrest locking mechanism on the side of the seat back adopts an existing structure, so it will not be described in detail.

[0029] Furthermore, such as Figures 8 to 10 As shown, in this embodiment, the toothed plate is composed of toothed plate A 11 and toothed plate B 12. Toothed plate A 11 and toothed plate B 12 are overlapped and connected into a whole by laser welding. A rectangular assembly groove (unmarked) is processed on the toothed plate at the position opposite to the bolt 7. One end of the bolt 7 is processed with an assembly part 701 that matches the rectangular assembly groove. The assembly part 701 of the bolt 7 is inserted into the rectangular assembly groove and assembled on the toothed plate by welding and riveting. The upper slider 6 and the middle slider 10 are connected to the toothed plate by inlay injection molding process.

[0030] Furthermore, such as Figure 4 , Figure 5 , Figure 8As shown in this embodiment, the buckle plate 8 is provided with small through holes 801 at positions opposite to the guide pin 5, and with large through holes 802 at positions opposite to the power output shaft of the motor assembly 1. A bushing 9 (also called a self-lubricating sleeve) is installed at the large through hole 802. Specifically, the bushing 9 is riveted to the large through hole of the buckle plate 8, and the shaft end of the power output shaft of the motor assembly 1 is inserted into the bushing 9 after installation. The bushing 9 is used to provide guidance, support and lubrication.

[0031] Furthermore, in this embodiment, the fixing plate 4 is also provided with a weight reduction groove (unmarked), which is opposite to the clearance groove on the buckle plate 8, and the electric locking bolt assembly is provided with mounting holes (unmarked) for connection with the sheet metal of the whole vehicle.

[0032] Working principle: Backrest adjustment - When the motor assembly 1 is powered on, it rotates in the forward direction, and drives the gear plate sub-assembly 20 to slide along the trajectory set by the guide pin 5 through the gear 2. At this time, the locking bolt 7 on the gear plate sub-assembly 20 drives the seat back to move backward, realizing the backrest adjustment function; conversely, to adjust the backrest forward, simply switch the motor direction, and the principle is the same as the backward adjustment.

[0033] The above describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. An electric locking bolt assembly, characterized in that, The device includes a motor assembly, gears, a motor mounting bracket, a fixing plate, guide pins, a gear plate sub-assembly, and a fastener. The motor assembly is fixed to the motor mounting bracket and connected to the gears to drive their rotation. The motor mounting bracket is mounted on the fixing plate. Both the motor mounting bracket and the fixing plate have clearance holes opposite to the gears. Two guide pins are welded to the fixing plate on the side facing away from the motor assembly to guide the movement of the gear plate sub-assembly and to provide load-bearing support. The gear plate sub-assembly is positioned between the fixing plate and the fastener. The device includes a toothed plate, a locking bolt mounted on the toothed plate, and an upper slider disposed on the upper end of the toothed plate. The lower end of the toothed plate has teeth that mesh with a gear, and a mounting groove is machined in the middle at a position opposite to the guide pin. A middle slider is mounted at the mounting groove, and a guide groove is machined on the middle slider to cooperate with the guide pin. A buckle plate is fixedly connected to a fixing plate. The buckle plate has a clearance groove at a position opposite to the locking bolt, and a limiting cover adapted to the upper slider at a position opposite to the upper slider. The locking bolt passes through the clearance groove on the buckle plate for connection to the seat back.

2. The electric locking bolt assembly according to claim 1, characterized in that, The toothed plate is composed of toothed plate A and toothed plate B. Toothed plate A and toothed plate B are overlapped and connected into a whole by laser welding. A rectangular assembly groove is machined on the toothed plate at the position opposite to the bolt. One end of the bolt is machined with an assembly part that fits into the rectangular assembly groove. The assembly part of the bolt is inserted into the rectangular assembly groove and assembled on the toothed plate by welding and riveting. The upper slider and the middle slider are connected to the toothed plate by inlay injection molding process.

3. The electric locking bolt assembly according to claim 1, characterized in that, The buckle plate has small through holes at the position opposite to the guide pin and large through holes at the position opposite to the power output shaft of the motor assembly. A bushing is installed at the large through hole, and the shaft end of the power output shaft of the motor assembly passes into the bushing after installation.

4. The electric locking bolt assembly according to claim 1, characterized in that, The fixing plate is also provided with a weight reduction groove, which is opposite to the clearance groove on the buckle plate. The electric locking bolt assembly is provided with mounting holes for connection with the sheet metal of the whole vehicle.

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