Electric sitting depth and inclination angle linkage adjusting mechanism

Abstract

The utility model discloses an electric seat depth inclination angle linkage adjusting mechanism which comprises a seat framework, a backrest framework and a supporting mechanism, the supporting mechanism is arranged at the bottom of the seat framework, and the supporting mechanism comprises a base, a support, a rotating shaft A, a connecting frame, a guide rail, a motor A, a lead screw A, a nut A, a sliding sleeve and a movable seat. Bases are arranged on the two sides of the bottom of the seat framework, supports are welded to the ends of the bases, a motor A is controlled to operate during adjustment, a nut A drives the seat framework to horizontally move through a sliding sleeve, a movable seat can synchronously slide along with the sliding sleeve in the sliding process of the sliding sleeve, and the end of the movable seat pulls the end of a connecting frame to move when the movable seat slides. In the sitting depth adjusting process, linkage adjustment of the inclination angle of the backrest framework around the rotating shaft A is achieved, the adjusting requirement of a user is met in most use scenes, the operation amount of the user is reduced, the automation degree and the intelligent degree of seat adjustment are improved, and use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of electric seat technology, and in particular to an electric seat depth and tilt angle linkage adjustment mechanism. Background Technology

[0002] Electric seats are seats that use an electric motor as a power source and adjust various positions of the seat through a transmission device and actuator. Passengers can move the seat forward and backward, and move the backrest forward and backward by simply flipping or pressing certain buttons. Electric seats can not only perform these basic adjustments, but also realize functions such as raising and lowering the front of the seat, raising and lowering the vertical position, sliding horizontally, and adjusting the backrest angle, providing better comfort and are widely used.

[0003] Existing electric seats have the following drawbacks when adjusting: Seat depth adjustment and backrest tilt adjustment are two commonly used adjustment functions, and these functions usually need to be adjusted separately. However, in actual use, the backrest angle generally tilts backward when the seat depth is moved forward, and vice versa. Therefore, in most adjustment situations, the user needs to operate two sets of adjustment buttons, which is cumbersome. Furthermore, the backrest tilt adjustment during seat depth adjustment is not intelligent enough. Therefore, we propose an electric seat depth and tilt adjustment linkage mechanism. Utility Model Content

[0004] The main objective of this invention is to provide an electric seat depth and backrest tilt adjustment mechanism. By using a support mechanism at the bottom of the seat frame and backrest frame, the seat depth adjustment and backrest tilt adjustment can be linked, improving ease of operation and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An electrically operated seat depth and tilt adjustment mechanism includes a seat frame, a backrest frame, and a support mechanism. The support mechanism is located at the bottom of the seat frame and includes a base, a bracket, a rotating shaft A, a connecting frame, a guide rail, a motor A, a lead screw A, a nut A, a sliding sleeve, and a movable seat. Bases are located on both sides of the bottom of the seat frame, and brackets are welded to the ends of the bases. A rotating shaft A is installed at the end of the bracket and connected to the backrest frame via the rotating shaft A. A guide rail is located between the bases at the bottom of the seat frame, and a motor A is installed at the end of the guide rail. A lead screw A is installed inside the guide rail at the power output end of the motor A, and a nut A is fitted onto the surface of the lead screw A. A sliding sleeve is installed on the top of the nut A, located on the top of the guide rail, and connected to the bottom of the seat frame via the sliding sleeve. A movable seat is horizontally inserted inside the sliding sleeve, and the movable seat extends through the interior of the sliding sleeve. A connecting frame is installed at the bottom of the backrest frame and connected to the end of the movable seat via the connecting frame.

[0007] Furthermore, it also includes an adjustment mechanism. An adjustment mechanism is provided at the connection between the sliding sleeve surface and the movable seat. The adjustment mechanism includes a limiting hole, a through hole, a support, a motor B, a lead screw B, a nut B, and a linkage rod. Multiple limiting holes are provided on the side of the movable seat. A through hole is provided inside the sliding sleeve near the side of the movable seat. A support is installed on the sliding sleeve surface corresponding to the through hole, and a motor B is installed on the end of the support surface away from the sliding sleeve. A lead screw B located inside the support is installed at the power output end of the motor B, and a nut B is connected to the outer periphery of the lead screw B. A linkage rod is installed on the top of the nut B. Normal linkage adjustment state. The through hole aligns with the corresponding limiting hole on the side of the movable seat. Simultaneously, the linkage rod at the top of nut B passes through both the through hole and the limiting hole, allowing the sliding sleeve to move synchronously with the movable seat during translation. This enables the coordinated adjustment of the backrest frame's tilt angle. When coordinated adjustment is not needed, motor B can be controlled to rotate, causing nut B to move horizontally and move the linkage rod out of the limiting hole and through hole. At this point, the sliding sleeve and movable seat are separated. When adjusting the seat depth of the seat frame, the sliding sleeve slides on the outer periphery of the movable seat without affecting the movable seat's linkage, thus not impacting the backrest frame's angle. This design is flexible and easy to adjust.

[0008] Furthermore, a pivot B is installed inside the movable seat near one end of the connecting frame. The pivot B is located at the connection between the movable seat and the connecting frame. The pivot B is located at the connection, so that the horizontal movement of the movable seat can be adjusted by the connecting frame to drive the backrest frame to adjust the angle around the pivot A.

[0009] Furthermore, each of the bases is equipped with a slide rail on its top, and each of the bottom sides of the seat frame is equipped with a slider that is inserted into the slide rail; the slide rails and sliders located on the bottom sides of the seat frame cooperate to provide auxiliary support for the seat frame without affecting its adjustment.

[0010] Furthermore, the through hole and the limiting hole are positioned correspondingly, and the end of the linkage rod passes through the through hole and is inserted into the limiting hole; by adjusting the position of the linkage rod, the linkage control between the sliding sleeve and the movable seat can be realized.

[0011] Furthermore, the guide rail has grooves on both sides of its top, and the movable seat has slide blocks inserted into the guide rail at both ends of its bottom. The outer walls of the slide blocks are covered with rubber sleeves, which are located at the connection between the slide block and the inner wall of the groove. The movable seat has slide blocks inserted into the groove at its bottom, and the outer walls of the slide blocks are covered with rubber sleeves to increase the friction at the connection. When the slide sleeve is separated from the movable seat, the position of the movable seat can be stabilized, and the displacement of the slide sleeve will not cause the movable seat to move.

[0012] Compared with the prior art, this utility model has the following beneficial effects: The seat frame and backrest frame together constitute the main structure of the seat assembly. A screw adjustment assembly is provided at the bottom of the seat frame to adjust the seat depth. During adjustment, motor A is controlled to run, motor A drives screw A to rotate, and nut A drives the seat frame to move horizontally through a sliding sleeve, thereby realizing the adjustment of the seat depth. During the sliding process, since the sliding sleeve and the movable seat are connected by a linkage rod, the movable seat will also slide synchronously with the sliding sleeve. When the movable seat slides, its end pulls the end of the connecting frame to move, thereby enabling the backrest frame's tilt angle to be adjusted around the pivot A during the seat depth adjustment process. This meets the user's adjustment needs in most usage scenarios and reduces user operation. This design enhances the automation and intelligence of seat adjustment, improving ease of use. Under normal linkage adjustment, the through hole aligns with the corresponding limiting hole on the side of the movable seat. Simultaneously, the linkage rod at the top of nut B passes through both the through hole and the limiting hole, allowing the sliding sleeve to move synchronously with the movable seat during translation, thus achieving linkage adjustment of the backrest frame's tilt angle. When linkage adjustment is not needed, motor B can be controlled to rotate, causing nut B to move horizontally and move the linkage rod out of the limiting hole and through hole. At this time, the sliding sleeve and movable seat are separated. When adjusting the seat depth, the sliding sleeve slides on the outer periphery of the movable seat without linkage, thus not affecting the angle of the backrest frame. This design offers flexibility and convenient adjustment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of an electric seat depth and tilt angle linkage adjustment mechanism according to this utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the guide rail of an electric seat depth and tilt angle linkage adjustment mechanism according to this utility model.

[0015] Figure 3 This is a schematic diagram of the structure of the electric seat depth and tilt angle linkage adjustment mechanism of this utility model in the separated state of the sliding sleeve and the movable seat connection.

[0016] Figure 4 This is a schematic diagram of the structure of the sliding sleeve and the movable seat connection of the electric seat depth and tilt angle linkage adjustment mechanism of this utility model in the linkage state.

[0017] In the diagram: 1. Seat frame; 2. Backrest frame; 3. Support mechanism; 301. Base; 302. Bracket; 303. Rotating shaft A; 304. Connecting frame; 305. Guide rail; 306. Motor A; 307. Lead screw A; 308. Nut A; 309. Sliding sleeve; 310. Movable seat; 311. Rotating shaft B; 312. Sliding rail; 313. Sliding block; 4. Adjustment mechanism; 401. Limiting hole; 402. Through hole; 403. Support; 404. Motor B; 405. Lead screw B; 406. Nut B; 407. Linkage rod; 408. Slide groove; 409. Slide seat; 410. Rubber sleeve. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figure 1-4 As shown, an electric seat depth and tilt angle linkage adjustment mechanism includes a seat frame 1, a backrest frame 2, and a support mechanism 3. The support mechanism 3 is located at the bottom of the seat frame 1. The support mechanism 3 includes a base 301, a bracket 302, a rotating shaft A303, a connecting frame 304, a guide rail 305, a motor A306, a lead screw A307, a nut A308, a sliding sleeve 309, and a movable seat 310. Bases 301 are located on both sides of the bottom of the seat frame 1, and brackets 302 are welded to the ends of the bases 301. A rotating shaft A303 is installed at the end of the bracket 302 and connected to the backrest frame 2 via the rotating shaft A303. A guide rail 305 is provided between the bases 301, and a motor A306 is installed at the end of the guide rail 305. A lead screw A307 is installed inside the guide rail 305 at the power output end of the motor A306, and a nut A308 is connected to the surface of the lead screw A307. A sliding sleeve 309 is installed on the top of the nut A308, which is located on the top of the guide rail 305 and is connected to the bottom of the seat frame 1 through the sliding sleeve 309. A movable seat 310 is horizontally inserted inside the sliding sleeve 309 and passes through the interior of the sliding sleeve 309. A connecting frame 304 is installed at the bottom of the backrest frame 2 and is connected to the end of the movable seat 310 through the connecting frame 304.

[0020] The system also includes an adjustment mechanism 4. An adjustment mechanism 4 is provided at the connection between the surface of the sliding sleeve 309 and the movable seat 310. The adjustment mechanism 4 includes a limiting hole 401, a through hole 402, a support 403, a motor B404, a lead screw B405, a nut B406, and a linkage rod 407. Multiple limiting holes 401 are provided on the side of the movable seat 310. A through hole 402 is provided inside the sliding sleeve 309 near the side of the movable seat 310. A support 403 is installed on the surface of the sliding sleeve 309 corresponding to the through hole 402, and a motor B404 is installed on the end of the support 403 away from the sliding sleeve 309. A lead screw B405 located inside the support 403 is installed at the power output end of the motor B404, and a nut B406 is connected to the outer periphery of the lead screw B405. A linkage rod 407 is installed on the top of the nut B406. 7. Under normal linkage adjustment conditions, the through hole 402 aligns with the corresponding limiting hole 401 on the side of the movable seat 310. At the same time, the linkage rod 407 on the top of the nut B406 passes through the through hole 402 and the limiting hole 401, so that the sliding sleeve 309 can drive the movable seat 310 to move synchronously when it moves horizontally, thereby realizing the linkage adjustment of the backrest frame 2 tilt angle. When linkage adjustment is not needed, the motor B404 can be controlled to run. The motor B404 runs the lead screw B405 to rotate, so that the nut B406 moves horizontally and drives the linkage rod 407 to move out of the limiting hole 401 and the through hole 402. At this time, the sliding sleeve 309 and the movable seat 310 are in a separated state. When adjusting the seat depth of the seat frame 1, the sliding sleeve 309 slides on the outer periphery of the movable seat 310 and will not drive the movable seat 310 to move in linkage, thus not affecting the angle of the backrest frame 2. It is flexible to use and easy to adjust.

[0021] The movable seat 310 has a rotating shaft B311 installed inside near the connecting frame 304. The rotating shaft B311 is located at the connection between the movable seat 310 and the connecting frame 304. The top of the base 301 is equipped with a slide rail 312. The bottom sides of the seat frame 1 are equipped with sliders 313 that are inserted into the slide rails 312. The rotating shaft B311 is located at the connection, so that the horizontal movement of the movable seat 310 can drive the backrest frame 2 to adjust its angle around the rotating shaft A303 through the connecting frame 304. The slide rails 312 and sliders 313 located on the bottom sides of the seat frame 1 cooperate to provide auxiliary support for the seat frame 1 without affecting its adjustment.

[0022] The through hole 402 corresponds to the limiting hole 401. The end of the linkage rod 407 passes through the through hole 402 and is inserted into the limiting hole 401. The top two sides of the guide rail 305 are provided with sliding grooves 408, and the bottom two ends of the movable seat 310 are equipped with sliding blocks 409 inserted into the guide rail 305. The outer wall of the sliding block 409 is covered with a rubber sleeve 410, and the rubber sleeve 410 is located at the connection between the sliding block 409 and the inner wall of the sliding groove 408. By adjusting the position of the linkage rod 407, the linkage control between the sliding sleeve 309 and the movable seat 310 can be realized. The bottom of the movable seat 310 is provided with a sliding block 409 inserted into the sliding groove 408. At the same time, the outer wall of the sliding block 409 is covered with a rubber sleeve 410 to increase the friction at the connection. When the sliding sleeve 309 and the movable seat 310 are separated, the position of the movable seat 310 can be stabilized, and the displacement of the sliding sleeve 309 will not cause the movable seat 310 to move.

[0023] It should be noted that this utility model is an electric seat depth and tilt angle linkage adjustment mechanism. In use, the seat frame 1 and the backrest frame 2 cooperate to form the main structure of the seat assembly. A lead screw adjustment assembly is provided at the bottom of the seat frame 1 to adjust the seat depth. During adjustment, the motor A306 is controlled to run, and the motor A306 drives the lead screw A307 to rotate. The nut A308 drives the seat frame 1 to move horizontally through the sliding sleeve 309, thereby realizing the adjustment of the seat depth. During the sliding of the sliding sleeve 309, since the sliding sleeve 309 is connected to the movable seat 310 through the linkage rod 407, the movable seat 310 will also slide synchronously with the sliding sleeve 309. When the movable seat 310 slides, its end pulls the end of the connecting frame 304 to move, thereby enabling the tilt angle of the backrest frame 2 to be linked and adjusted around the pivot A303 during the seat depth adjustment. This meets the user's adjustment needs in most usage scenarios and reduces the amount of operation required by the user. The automation and intelligence of seat adjustment are improved, enhancing ease of use. Under normal linkage adjustment conditions, the through hole 402 aligns with the corresponding limiting hole 401 on the side of the movable seat 310. Simultaneously, the linkage rod 407 at the top of the nut B406 passes through the through hole 402 and the limiting hole 401, allowing the sliding sleeve 309 to move synchronously with the movable seat 310 during translation, thereby achieving linkage adjustment of the backrest frame 2's tilt angle. When linkage adjustment is not required, the motor B404 can be controlled to run, causing the lead screw B405 to rotate, which in turn causes the nut B406 to move horizontally, moving the linkage rod 407 out of the limiting hole 401 and the through hole 402. At this time, the sliding sleeve 309 and the movable seat 310 are separated. When adjusting the seat depth of the seat frame 1, the sliding sleeve 309 slides on the outer periphery of the movable seat 310 without linkage with the movable seat 310, thus not affecting the angle of the backrest frame 2. This design is flexible and convenient to use.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electrically operated seat depth and inclination linkage adjustment mechanism comprising a seat frame (1), characterised in that, It also includes back skeleton (2) and support mechanism (3), the seat skeleton (1) bottom is provided with support mechanism (3), the support mechanism (3) includes base (301), support (302), pivot A (303), connecting frame (304), guide rail (305), motor A (306), screw rod A (307), nut A (308), sliding sleeve (309) and movable seat (310), both sides of the seat skeleton (1) bottom are provided with base (301), and the end of base (301) is welded with support (302), the end of support (302) is provided with pivot A (303), and pivot A (303) is connected with back skeleton (2), the position between base (301) of the seat skeleton (1) bottom is provided with guide rail (305), and the end of guide rail (305) is provided with motor A (306), the power output end of motor A (306) is provided with screw rod A (307) located in the inside of guide rail (305), and the surface of screw rod A (307) is matched with nut A (308), the top of nut A (308) is provided with sliding sleeve (309) located at the top of guide rail (305), and sliding sleeve (309) is connected with the bottom of seat skeleton (1) through sliding sleeve (309), the inside of sliding sleeve (309) is inserted with movable seat (310) in horizontal direction, and movable seat (310) penetrates the inside of sliding sleeve (309), and the bottom of back skeleton (2) is provided with connecting frame (304), and connecting frame (304) is connected with the end of movable seat (310).

2. A motorised seat depth and rake linkage adjustment mechanism according to claim 1 wherein: It also includes adjusting mechanism (4), the connecting part between the surface of sliding sleeve (309) and movable seat (310) is provided with adjusting mechanism (4), the adjusting mechanism (4) includes limiting hole (401), through hole (402), support (403), motor B (404), screw rod B (405), nut B (406) and linkage rod (407), the side of movable seat (310) is provided with limiting hole (401), and the limiting hole (401) is multiple, the inside of sliding sleeve (309) is provided with through hole (402) near the side of movable seat (310), the surface of sliding sleeve (309) is provided with support (403) at the position corresponding to through hole (402), and the end of support (403) surface away from sliding sleeve (309) is provided with motor B (404), the power output end of motor B (404) is provided with screw rod B (405) located in the inside of support (403), and the outer periphery of screw rod B (405) is matched with nut B (406), and the top of nut B (406) is provided with linkage rod (407).

3. The motorized seat depth and recliner linkage mechanism of claim 1, wherein: The end of movable seat (310) near connecting frame (304) is provided with pivot B (311), and pivot B (311) is located at the connecting part between movable seat (310) and connecting frame (304).

4. The motorized seat depth and inclination angle linkage adjustment mechanism of claim 1, wherein: The top of base (301) is provided with sliding rail (312), and the bottom of seat skeleton (1) is provided with sliding block (313) inserted into the inside of sliding rail (312).

5. The motorized seat depth and inclination angle linkage adjustment mechanism of claim 2, wherein: The through hole (402) corresponds to the position of the limiting hole (401), and the end of the linkage rod (407) penetrates the through hole (402) and is inserted into the inside of the limiting hole (401).

6. The motorized seat depth and inclination angle linkage adjustment mechanism of claim 2, wherein: The top of the guide rail (305) is provided with a sliding groove (408) on both sides, and the bottom of the movable seat (310) is provided with a sliding seat (409) inserted into the inside of the guide rail (305). The outer wall of the sliding seat (409) is covered with a rubber sleeve (410), and the rubber sleeve (410) is located between the connecting part of the sliding seat (409) and the inner wall of the sliding groove (408).

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