Locking device for automobile seat sliding rail
By introducing the cooperation between the moving block and the transmission rod in the car seat slide device, the meshing relationship between the limit block and the rack is used to solve the problem of reverse movement during the seat adjustment process, and the accuracy and stability of the seat are achieved One-way movement.
Patent Information
- Application Number
- CN202421095814.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing car seat slide device lacks a locking structure that hinders the reverse movement during the adjustment process, making it difficult for the seat to be adjusted to the appropriate position accurately.
A locking device for car seat slide rail is designed. Through the cooperation of the moving block and the transmission rod, the meshing relationship between the limit block and the rack is used to realize one-way movement of the support column and prevent the seat from moving in reverse.
Effectively prevent the seat from moving in reverse during adjustment, improve the accuracy and stability of the seat position, and ensure that the seat can move accurately to the appropriate position in one direction.
Smart Images
Figure CN222202320U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile seat movement locking, in particular to a locking device for an automobile seat slide rail. Background Art
[0002] As one of the important parts of a car, car seats have a great impact on the safety and comfort of the car. Car seats generally include a seat body and a slide rail device. The seat body is installed on the vehicle frame through the slide rail device. The slide rail device usually includes a lower slide rail fixed to the vehicle frame and an upper slide rail fixed to the seat body. A seat slide rail locking device is provided between the upper slide rail and the lower slide rail to keep the seat in a fixed state after being adjusted forward and backward.
[0003] There are generally two ways to adjust a seat forward and backward on a slide rail device, namely, electric adjustment of the seat position and manual adjustment of the seat position. Manual adjustment of the seat position is generally used in some simple models. During the manual adjustment of the seat position, the user holds the locking part related connecting rod under the seat with one hand, and then uses his legs to coordinate the body to move forward and backward. When the seat moves to the appropriate position, the connecting rod is released to fix the seat position. However, during the adjustment process, most slide rail devices do not have a locking structure to prevent the seat from moving in the opposite direction during movement. As a result, after the seat is adjusted to a suitable distance backward, the seat moves forward again because the body leans forward, or after the seat is adjusted to a suitable distance forward, the seat moves backward again because the body leans backward, which is not conducive to accurately adjusting the seat position. Utility Model Content
[0004] In order to overcome the above-mentioned technical problems, the purpose of the utility model is to provide a locking device for a car seat slide rail, by sliding a moving block 2 on the outer side of the support column, the moving block 2 is rotatably connected to the limit block and the rack 2 through the transmission rod, and a larger limit groove space is reserved on the left position limit block in front of the transmission rod. When the left rack 2 is meshed and plugged into the rack 1, the support column can only move forward along the lower slide rail. The right position limit block is located on the rear side of the transmission rod and a larger limit groove space is reserved. When the right rack 2 is meshed and plugged into the rack 1, the support column can only move backward along the lower slide rail, thereby achieving that the seat will not move in the opposite direction when the support column moves the seat in a certain direction, which is convenient for the seat to move to the appropriate position accurately in one direction.
[0005] The purpose of the utility model can be achieved through the following technical solutions:
[0006] The locking device for a car seat slide rail comprises two lower rails which are symmetrically arranged and both are fixedly connected to the vehicle bottom frame, the top surface of the lower rails is slidably connected to a support column, a mounting plate is fixed between the two support columns, a moving block 1 is slidably engaged with the inner side of the support column, a plurality of plug-in shafts are fixed at equal intervals on the bottom surface of the moving block 1, a limit strip which is adapted to be plugged into the plug-in shaft is fixed on one side of the lower rail, a locking mechanism is arranged on the outer side of the support column, the locking mechanism comprises a moving block 2 which is slidably engaged with the support column, both ends of the bottom surface of the moving block 2 are rotatably connected to a transmission rod, a limiting block is arranged between the bottoms of the two transmission rods, return springs are fixed at both ends of the top surface of the moving block 2, a protective plate which is fixedly connected to the support column is fixed on the top of the two return springs, and a connecting rod is fixed between the two moving blocks 1.
[0007] Furthermore, a trapezoidal groove 1 for slidingly engaging with the second moving block is formed on the outer side of the support column, and a trapezoidal groove 2 for slidingly engaging with the first moving block is formed on the inner side of the support column.
[0008] Furthermore, rectangular grooves are provided at both ends of the bottom surface of the second moving block, a connecting shaft rotatably connected to the top of the transmission rod is fixed inside the rectangular groove, a torsion spring is provided between the connecting shaft and the transmission rod, and the length of the rectangular groove is greater than the width of the transmission rod.
[0009] Furthermore, both ends of the top surface of the limit block are provided with limit grooves rotatably connected to the bottom end of the transmission rod at the corresponding position, and one side of the transmission rod is in contact with the inner side of the limit groove.
[0010] Furthermore, a second rack is fixed to the bottom surface of the limit block, a first rack is fixed to one side of the lower slide rail, an upper slide rail slidably connected to the lower slide rail is fixed to the bottom surface of the support column, and a plurality of plug holes are evenly spaced on the bottom surface of the limit bar.
[0011] Furthermore, two spring telescopic rods are fixed between the top surface of the moving block and the mounting plate, the spring telescopic rods include a sleeve fixedly connected to the moving block, a sliding rod fixedly connected to the mounting plate is slidably connected inside the sleeve, and a connecting spring is fixed between the sliding rod and the sleeve.
[0012] Furthermore, both ends of the connecting rod are slidably sleeved with sleeves, one end of the sleeve is fixed with a steel wire rope, and the end of the steel wire rope away from the sleeve passes through the supporting column and is fixedly connected to the second bottom surface of the moving block.
[0013] Beneficial effects of the utility model:
[0014] 1. Turn the left side (direction indication refers to the instruction manual) Figure 2 , 6)'s sleeve slides toward the middle of the connecting rod, and the sleeve pulls the steel wire rope to make the moving block 2 on the left side move down with the limit block, and the rack 2 on the limit block meshes and is plugged into the rack 1 below it, and then the connecting rod is lifted upward to make the moving block 1 move out of the plug-in hole of the limit bar with the plug-in shaft. At this time, the upper slide rail can move forward with the seat for adjustment, and the two transmission rods rotate backward with the limit block and the rack 2, so that the rack 2 slides above the rack 1 during the forward adjustment of the seat, and does not hinder the movement of the seat, the mounting plate and the support column. When the support column moves to the appropriate position and stops moving, the two transmission rods carry the limit block and the rack under the elastic force of the torsion spring. The second rack moves to the initial position, that is, the second rack is meshed and plugged into the first rack, which prevents the support column from moving backward along the lower slide rail, thereby preventing the mounting plate and the seat from moving backward, thereby preventing the seat from moving backward during the process of adjusting the seat forward. Conversely, when the sleeve on the right side is slid toward the middle of the connecting rod, the seat can be adjusted backward. During this adjustment process, the second rack on the right side cooperates with the first rack to prevent the support column from moving forward along the lower slide rail, thereby preventing the mounting plate and the seat from moving forward, thereby preventing the seat from moving forward during the process of adjusting the seat backward, which is beneficial to improving the accuracy of the one-way movement adjustment of the seat.
[0015] 2. A spring telescopic rod is fixed between the moving block 1 and the mounting plate. When the plug-in shaft on the connecting rod moves upward, the connecting spring inside the spring telescopic rod is in a compressed state. After the connecting rod is released by hand, the elastic force of the connecting spring causes the moving block to automatically move downward with the plug-in shaft and plug into the corresponding plug-in hole to lock the seat position. A reset spring is fixed between the moving block 2 and the protective plate. When the moving block 2 moves downward with the limit block, the reset spring is in a stretched state. After releasing the sleeve, the moving block 2 with the limit block returns to the initial position for standby use under the action of the reset spring. A torsion spring is arranged between the top end of the transmission rod and the connecting shaft. The elastic force of the torsion spring causes the initial state of the transmission rod to be a vertical downward state, which facilitates the transmission rod to engage and plug the rack 2 on the limit block into the rack 1. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described below in conjunction with the accompanying drawings.
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model and the seat;
[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the lower slide rail and the support column in the utility model;
[0020] Figure 4 It is a schematic diagram of the locking mechanism structure in the utility model;
[0021] Figure 5 This is a schematic diagram of the structure of the support column, the connecting rod and the moving block in the utility model;
[0022] Figure 6 It is a structural schematic diagram of the moving block 2, the transmission rod and the limit block in the utility model.
[0023] In the figure: 100, lower slide rail; 110, limit bar; 111, plug-in hole; 120, rack 1; 200, support column; 210, mounting plate; 220, trapezoidal groove 1; 230, trapezoidal groove 2; 240, upper slide rail; 300, moving block 1; 310, plug-in shaft; 320, spring telescopic rod; 400, locking mechanism; 410, moving block 2; 420, transmission rod; 430, limit block; 431, limit groove; 440, reset spring; 450, protective plate; 500, connecting rod; 510, sleeve; 511, wire rope. DETAILED DESCRIPTION
[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-6 As shown, a locking device for a car seat slide rail comprises two lower slide rails 100 arranged symmetrically and fixedly connected to the vehicle bottom frame, the top surface of the lower slide rail 100 is slidably connected to a support column 200, a mounting plate 210 is fixed between the two support columns 200, a moving block 300 is slidably engaged with the inner side of the support column 200, a plurality of plug-in shafts 310 are fixed at equal intervals on the bottom surface of the moving block 300, a limiting strip 110 adapted to be plugged with the plug-in shaft 310 is fixed on one side of the lower slide rail 100, the support column 200 A locking mechanism 400 is provided on the outer side, and the locking mechanism 400 includes a moving block 210 slidably engaged with the support column 200, both ends of the bottom surface of the moving block 210 are rotatably connected with a transmission rod 420, a limiting block 430 is provided between the bottoms of the two transmission rods 420, and both ends of the top surface of the moving block 210 are fixed with a return spring 440, and a protective plate 450 fixedly connected to the support column 200 is fixed on the top of the two return springs 440, and a connecting rod 500 is fixed between the two moving blocks 300.
[0026] The outer side of the support column 200 is provided with a trapezoidal groove 220 that is slidably engaged with the moving block 410, and the inner side of the support column 200 is provided with a trapezoidal groove 230 that is slidably engaged with the moving block 300, so that the moving block 410 can slide stably on the outer side of the support column 200, and the moving block 300 can slide stably on the inner side of the support column 200; both ends of the bottom surface of the moving block 410 are provided with rectangular grooves, and a connecting shaft that is rotatably connected to the top of the transmission rod 420 is fixed inside the rectangular groove, and a torsion spring is arranged between the connecting shaft and the transmission rod 420. The length of the rectangular groove is greater than the width of the transmission rod 420, and the length of the rectangular groove is greater than the width of the transmission rod 420, so that the top of the transmission rod 420 can rotate back and forth on the moving block 410, and the torsion spring enables the transmission rod 420 in the initial state to be arranged vertically with the limit block 430, so that the rack 2 on the limit block 430 is meshed and plugged into the corresponding position rack 120.
[0027] Both ends of the top surface of the limit block 430 are provided with limit grooves 431 which are rotatably connected to the bottom end of the transmission rod 420 at the corresponding position. One side of the transmission rod 420 is in contact with the inner side of the limit groove 431, and one side of the limit groove 431 is in contact with the transmission rod 420 so that a space is reserved between the other side of the limit groove 431 and the transmission rod 420. This space is convenient for satisfying the need for the limit block 430 to rotate at the bottom end of the transmission rod 420, so that the limit block 430 can only move in one direction under the moving block 2 410; a rack 2 is fixed to the bottom surface of the limit block 430, a rack 120 is fixed to one side of the lower slide rail 100, an upper slide rail 240 slidably connected to the lower slide rail 100 is fixed to the bottom surface of the support column 200, and a plurality of plug holes 111 are evenly spaced on the bottom surface of the limit bar 110. When the upper slide rail 240 slides in the lower slide rail 100, the support column 200 carries the seat to a stable adjustment position on the lower slide rail 100.
[0028] Two spring telescopic rods 320 are fixed between the top surface of the moving block 300 and the mounting plate 210. The spring telescopic rods 320 include a sleeve fixedly connected to the moving block 300, a sliding rod fixedly connected to the mounting plate 210 is slidably connected inside the sleeve, and a connecting spring is fixed between the sliding rod and the sleeve. After the moving block 300 moves up, the spring telescopic rod 320 can move it down and back to the initial position, so that the plug-in shaft 310 is plugged into the corresponding position plug-in hole 111; both ends of the connecting rod 500 are slidably sleeved with a sleeve 510, one end of the sleeve 510 is fixed with a steel wire rope 511, and the end of the steel wire rope 511 facing away from the sleeve 510 passes through the support column 200 and is fixedly connected to the bottom surface of the moving block 2 410, and the sleeve 510 moves outside the connecting rod 500 to pull the steel wire rope 511 so that the moving block 2 410 can move down along the outside of the support column 200.
[0029] Working principle: When you need to adjust the seat backward during work, hold the right side with your hand (refer to the instruction manual for direction indication). Figure 2 , 6 ) sleeve 510 moves to the middle of the connecting rod 500, and the sleeve 510 pulls the wire rope 511 to make the right moving block 210 move down along the support column 200. The transmission rod 420 under the moving block 210 engages and plugs the rack 2 on the limit block 430 into the rack 120, and then lifts the connecting rod 500 upward to make the moving block 130 move out of the plug-in hole 111 of the limit bar 110 with the plug-in shaft 310. At this time, the connecting spring inside the spring telescopic rod 320 is in a compressed state, and then a person sits on the seat to make the seat and the support column 200 move backward along the lower rail 100. During the movement, the top end of the transmission rod 420 rotates forward with the connecting shaft as the axis, and the limit block 430 also rotates forward at the bottom end of the transmission rod 420, so that the limit block 430 slides with the rack 2 against the top of the rack 120. When the seat moves to the appropriate position, the hand releases the connection. When the seat is adjusted to the rear, the sleeve 510 on the left side of the connecting rod 500 can be moved to prevent the seat from moving backwards.
[0030] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0031] The above contents are merely examples and explanations of the present utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the present utility model.
Claims
1. A locking device for a car seat slide rail, comprising two lower slide rails (100) arranged symmetrically and both fixedly connected to a vehicle chassis, characterized in that: The top surface of the lower slide rail (100) is slidably connected to a support column (200), a mounting plate (210) is fixed between the two support columns (200), a moving block (300) is slidably engaged on the inner side of the support column (200), a plurality of plug-in shafts (310) are fixed at equal intervals on the bottom surface of the moving block (300), a limiting strip (110) adapted to be plugged with the plug-in shafts (310) is fixed on one side of the lower slide rail (100), a locking mechanism (400) is arranged on the outer side of the support column (200), and the locking mechanism (400) 0) comprises a moving block 2 (410) slidably engaged with a support column (200), both ends of the bottom surface of the moving block 2 (410) are rotatably connected with a transmission rod (420), a limit block (430) is arranged between the bottoms of the two transmission rods (420), both ends of the top surface of the moving block 2 (410) are fixed with a return spring (440), the tops of the two return springs (440) are fixed with a protective plate (450) fixedly connected to the support column (200), and a connecting rod (500) is fixed between the two moving blocks 1 (300).
2. A locking device for a car seat slide rail according to claim 1, characterized in that: The outer side of the support column (200) is provided with a trapezoidal groove 1 (220) which is slidably engaged with the second moving block (410), and the inner side of the support column (200) is provided with a trapezoidal groove 2 (230) which is slidably engaged with the first moving block (300).
3. A locking device for a car seat slide rail according to claim 1, characterized in that: Rectangular grooves are provided at both ends of the bottom surface of the second moving block (410), a connecting shaft rotatably connected to the top of the transmission rod (420) is fixed inside the rectangular groove, a torsion spring is provided between the connecting shaft and the transmission rod (420), and the length of the rectangular groove is greater than the width of the transmission rod (420).
4. The locking device for a car seat slide rail according to claim 1, characterized in that: Both ends of the top surface of the limit block (430) are provided with limit grooves (431) rotatably connected to the bottom end of the transmission rod (420) at the corresponding position, and one side of the transmission rod (420) is in contact with the inner side of the limit groove.
5. The locking device for a car seat slide rail according to claim 1, characterized in that: A second rack is fixed to the bottom surface of the limit block (430), a first rack (120) is fixed to one side of the lower slide rail (100), an upper slide rail (240) slidably connected to the lower slide rail (100) is fixed to the bottom surface of the support column (200), and a plurality of plug holes (111) are provided at equal intervals on the bottom surface of the limit bar (110).
6. The locking device for a vehicle seat slide rail according to claim 1, characterized in that: Two spring telescopic rods (320) are fixed between the top surface of the moving block 1 (300) and the mounting plate (210), and the spring telescopic rods (320) include a sleeve fixedly connected to the moving block 1 (300), a sliding rod fixedly connected to the mounting plate (210) is slidably connected inside the sleeve, and a connecting spring is fixed between the sliding rod and the sleeve.
7. The locking device for a vehicle seat slide rail according to claim 1, characterized in that: Both ends of the connecting rod (500) are slidably sleeved with sleeves (510), one end of the sleeve (510) is fixed with a steel wire rope (511), and the end of the steel wire rope (511) away from the sleeve (510) passes through the support column (200) and is fixedly connected to the bottom surface of the second moving block (410).