Electric extension leg support mechanism of automobile seat

Abstract

According to the electric extension leg support mechanism of the automobile seat, a motor drives a mandrel to rotate, the mandrel drives a left angle adjuster and a right angle adjuster to rotate, the left angle adjuster and the right angle adjuster respectively drive a left fifth connecting plate and a right fifth connecting plate to rotate, and the rotating action is finally transmitted to a supporting sheet metal assembly through a connecting rod. When the electric leg support mechanism achieves the maximum unfolding position, a lead screw motor arranged on a supporting metal plate assembly starts to work, a lead screw drives a plastic support, the plastic support pushes an extending metal plate, and when the electric leg support mechanism moves to the maximum position of a leg support extending assembly, the leg support extending assembly stops; the leg support is electrically extended to reach the maximum unfolding position, the leg support mechanism is driven by an angle adjuster, the overall strength of the leg support is enhanced, the overall stability is improved, meanwhile, the leg support is additionally provided with an extension assembly, the contact area between the leg support and the legs is longer, the comfort of the leg support is improved, and the application range of the leg support is wider.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle seats, and particularly relates to an electric extending leg rest mechanism for vehicle seats. Background Art

[0002] At present, with the improvement of people's requirements for the riding quality of vehicles, the functions of vehicle seats are becoming more and more complex. Among them, seats with leg rest functions are deeply favored by consumers. When driving long distances or resting, the leg rest of the seat can relieve the fatigue of passengers' legs and increase comfort.

[0003] However, the leg rests of currently commonly used vehicle seats have a small difference in height for different people, and the supporting area of the legs is small, so that the leg rests of vehicle seats only play an effective role for a fixed group of people, and the scope of use is small; there are also deficiencies in the prior art that the leg rests of vehicles using angle adjusters have no extending mechanism and the supporting area of the legs is small; therefore, the utility model proposes an electric extending leg rest mechanism for vehicle seats to solve the above problems. Summary of the Utility Model

[0004] The utility model provides an electric extending leg rest mechanism for vehicle seats, aiming to solve the problems raised in the background art.

[0005] The utility model is realized as follows. An electric extending leg rest mechanism for vehicle seats includes a support sheet metal assembly, a four-link connecting plate module, an electric angle adjustment mechanism module, and an extending assembly;

[0006] A lead screw motor and a lead screw are provided on the support sheet metal assembly, and the lead screw motor and the lead screw are used to drive the extending assembly;

[0007] The support sheet metal assembly is connected to the electric angle adjustment mechanism module through the four-link connecting plate module. The electric angle adjustment mechanism module includes two dual-core components, the two dual-core components are distributed relatively at intervals, a core shaft is provided between the two dual-core components, a concentric angle adjuster is provided on the core shaft, and a thrust retaining ring for locking the core shaft is provided on the core shaft.

[0008] Preferably, the support sheet metal assembly further includes an upper support sheet metal, a lower support sheet metal, a left support sheet metal, and a right support sheet metal.

[0009] Preferably, the four-link connecting plate module includes a first connecting plate left, a second connecting plate left, a third connecting plate left, and a fourth connecting plate left on the left side and a first connecting plate right, a second connecting plate right, a third connecting plate right, and a fourth connecting plate right on the right side. The four-link connecting plates on the left and right sides are symmetrically arranged on both sides of the support sheet metal assembly, and the four-link connecting plates are connected by riveting.

[0010] Preferably, the concentric angle adjuster includes a left angle adjuster and a right angle adjuster. The left angle adjuster is fixedly arranged on the upper left of the lap joint plate, and the right angle adjuster is fixedly arranged on the upper right of the lap joint plate. The core shaft is arranged between the left angle adjuster and the right angle adjuster, and an electric angle adjustment mechanism for the concentric angle adjuster is arranged on the outer wall of the core shaft.

[0011] Preferably, limiting sheet metals are arranged on both the upper left of the lap joint plate and the upper right of the lap joint plate.

[0012] Preferably, the electric angle adjustment mechanism module further includes a left fifth connecting plate and a right fifth connecting plate. The left fifth connecting plate and the right fifth connecting plate are connected to the four-link connecting plate module, and a reinforcing pipe is arranged between the left fifth connecting plate and the right fifth connecting plate.

[0013] Preferably, the extension assembly includes an extension sheet metal, a left plastic support, a right plastic support, and a screw plastic support. The extension sheet metal and the screw plastic support are connected by self-tapping screws.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The electric extending leg rest mechanism of the vehicle seat described above is adopted in the present utility model. The leg rest mechanism is driven by an angle adjuster, which strengthens the overall strength of the leg rest, improves the overall stability. At the same time, the leg rest is also provided with an extension assembly, so that the contact area between the leg rest and the leg is longer, improving the comfort of the leg rest and being applicable to a wider range of people. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the extended state of the extension assembly of the overall structure of the present utility model;

[0017] Figure 2 is a three-dimensional view of the structure of the support sheet metal assembly in the present utility model;

[0018] Figure 3 is a three-dimensional view of the four-link connecting plate module in the present utility model;

[0019] Figure 4 is a three-dimensional view of the electric angle adjustment mechanism module in the present utility model;

[0020] Figure 5 is a three-dimensional view of the extension assembly in the present utility model;

[0021] Figure 6 is a three-dimensional view of the retracted state of the extension assembly of the overall structure of the present utility model;

[0022] Figure 7 is a side view of the extended state of the extension assembly of the overall structure of the present utility model;

[0023] Figure 8Side view of the storage state of the extension component of the overall structure of the present utility model;

[0024] Figure 9 Side view of the storage state of the overall structure of the present utility model.

[0025] In the figure:

[0026] 1. Support sheet metal component; 101. Upper support sheet metal; 102. Lower support sheet metal; 103. Left support sheet metal; 104. Right support sheet metal; 105. Lead screw motor; 106. Lead screw;

[0027] 2. Four-link connecting plate module; 201. Left first connecting plate; 202. Left second connecting plate; 203. Left third connecting plate; 204. Left fourth connecting plate; 205. Right first connecting plate; 206. Right second connecting plate; 207. Right third connecting plate; 208. Right fourth connecting plate;

[0028] 3. Electric angle adjustment mechanism module; 301. Left angle adjuster; 302. Right angle adjuster; 303. Left overlapping plate; 304. Right overlapping plate; 305. Core shaft; 306. Electric angle adjustment mechanism of the angle adjuster; 307. Thrust retaining ring; 308. Left fifth connecting plate; 309. Right fifth connecting plate;

[0029] 4. Limit sheet metal; 5. Reinforcing pipe;

[0030] 6. Extension component; 601. Extension sheet metal; 602. Left plastic support; 603. Right plastic support; 604. Plastic support for the lead screw. Detailed implementation manners

[0031] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, rather than all, of the embodiments of the present utility model.

[0032] Generally, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model.

[0033] Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] Please refer to Figures 1 to 9 , the present utility model provides a technical solution: an electric extended leg rest mechanism for an automobile seat, including a support sheet metal assembly 1, a four-link connecting plate module 2, an electric angle adjustment mechanism module 3, and an extension assembly 6; a lead screw motor 105 and a lead screw 106 are provided on the support sheet metal assembly 1, and the lead screw motor 105 and the lead screw 106 are used to drive the extension assembly 6; the support sheet metal assembly 1 is connected to the electric angle adjustment mechanism module 3 through the four-link connecting plate module 2. The electric angle adjustment mechanism module 3 includes two sets of dual-core components, which are relatively spaced apart. A core shaft 305 is provided between the two sets of dual-core components. A concentric angle adjuster is provided on the core shaft 305, and a thrust retaining ring 307 for locking the core shaft 305 is provided on the core shaft 305.

[0037] In this embodiment, when the motor in the concentric angle adjuster electric angle adjustment mechanism 306 works, it will drive the core shaft 305 to rotate together. The core shaft 305 drives the left angle adjuster 301 and the right angle adjuster 302 to rotate. The left angle adjuster 301 and the right angle adjuster 302 drive the left fifth connecting plate 308 and the right fifth connecting plate 309 to rotate respectively. The rotation action is finally transmitted to the support sheet metal assembly 1 through the four-link connecting plate in the four-link connecting plate module 2, so that the entire electric leg rest realizes movement. When the support sheet metal assembly 1 is unfolded to a certain angle, the left fifth connecting plate 308 and the right fifth connecting plate 309 interact with the limit sheet metal 4, restricting the continuous movement of the left fifth connecting plate 308 and the right fifth connecting plate 309, so that the support sheet metal assembly 1 stops moving. At this time, the support sheet metal assembly 1 reaches the maximum unfolded position (please refer to Figure 6 and Figure 7) When the support sheet metal component 1 reaches the maximum deployment position, the lead screw motor 105 starts to rotate forward to drive the lead screw 106 to rotate forward. At this time, the forward rotation of the lead screw 106 drives the lead screw plastic support 604, and the lead screw plastic support 604 pushes the extended sheet metal 601 to extend. When it moves to the maximum position of the leg rest extension component 6, the leg rest extension component 6 stops moving, and the extension component 6 reaches the maximum deployment position (see Figure 1 and Figure 8 ). Conversely, the reverse rotation of the lead screw motor 105 drives the retraction of the extended sheet metal 601 to realize the movement of the extension component 6; see Figure 9 Figure and Figure

[0038] are the state diagrams when both the support sheet metal component 1 and the extension component 6 of the seat are in the retracted state.

[0038] Furthermore, please refer to Figure 2 , the support sheet metal component 1 further includes a support sheet metal upper 101, a support sheet metal lower 102, a support sheet metal left 103, and a support sheet metal right 104.

[0039] In this embodiment, the support sheet metal component 1 is a support member for the seat leg rest. When the motor in the concentric angle adjuster electric angle adjustment mechanism 306 works, it will drive the core shaft 305 to rotate together. The core shaft 305 drives the angle adjuster left 301 and the angle adjuster right 302 to rotate. The angle adjuster left 301 and the angle adjuster right 302 respectively drive the fifth connecting plate left 308 and the fifth connecting plate right 309 to rotate. The rotation action is finally transmitted to the support sheet metal component 1 through the four-link connecting plate in the four-link connecting plate module 2, so that the entire support sheet metal component 1 realizes movement.

[0040] Furthermore, please refer to Figure 3 , the four-link connecting plate module 2 includes a first connecting plate left 201, a second connecting plate left 202, a third connecting plate left 203, and a fourth connecting plate left 204 on the left side, and a first connecting plate right 205, a second connecting plate right 206, a third connecting plate right 207, and a fourth connecting plate right 208 on the right side. The four-link connecting plates on the left and right sides are symmetrically arranged on both sides of the support sheet metal component 1, and the four-link connecting plates are connected by riveting.

[0041] In this embodiment, when the motor in the concentric angle adjuster electric angle adjustment mechanism 306 works, it will drive the core shaft 305 to rotate together. The core shaft 305 drives the angle adjuster left 301 and the angle adjuster right 302 to rotate. The angle adjuster left 301 and the angle adjuster right 302 respectively drive the fifth connecting plate left 308 and the fifth connecting plate right 309 to rotate. The rotation action is finally transmitted to the support sheet metal component 1 through the four-link connecting plates on the left and right sides.

[0042] Furthermore, please refer to Figure 4, the concentric angle adjuster includes a left angle adjuster 301 and a right angle adjuster 302. The left angle adjuster 301 is fixedly arranged on the left lap plate 303, and the right angle adjuster 302 is fixedly arranged on the right lap plate 304. The mandrel 305 is arranged between the left angle adjuster 301 and the right angle adjuster 302, and an electric angle adjustment mechanism 306 for the concentric angle adjuster is arranged on the outer wall of the mandrel 305.

[0043] In this embodiment, when the motor in the electric angle adjustment mechanism 306 of the concentric angle adjuster works, it will drive the mandrel 305 to rotate together. The mandrel 305 drives the left angle adjuster 301 and the right angle adjuster 302 to rotate. The left angle adjuster 301 and the right angle adjuster 302 respectively drive the left fifth connecting plate 308 and the right fifth connecting plate 309 to rotate. The rotation action is finally transmitted to the support sheet metal assembly 1 through the four-link connecting plate in the four-link connecting plate module 2, so that the entire electric leg rest realizes movement.

[0044] Further, please refer to Figure 1 , limit sheet metals 4 are arranged on both the left lap plate 303 and the right lap plate 304.

[0045] In this embodiment, the motor in the electric angle adjustment mechanism 306 of the concentric angle adjuster is connected to the right lap plate 304 by an internal hexagonal socket head cap screw. Limit sheet metals 4 are arranged on both the left lap plate 303 and the right lap plate 304. The limit sheet metals 4 are used to limit the left fifth connecting plate 308 and the right fifth connecting plate 309. When the support sheet metal assembly 1 is unfolded to a certain angle, the left fifth connecting plate 308 and the right fifth connecting plate 309 interact with the limit sheet metals 4, restricting the continuous movement of the left fifth connecting plate 308 and the right fifth connecting plate 309, so that the support sheet metal assembly 1 stops moving. At this time, the support sheet metal assembly 1 reaches the maximum unfolded position.

[0046] Further, please refer to Figure 4 , the electric angle adjustment mechanism module 3 further includes a left fifth connecting plate 308 and a right fifth connecting plate 309. The left fifth connecting plate 308 and the right fifth connecting plate 309 are connected to the four-link connecting plate module 2, and a reinforcing pipe 5 is arranged between the left fifth connecting plate 308 and the right fifth connecting plate 309.

[0047] In this embodiment, a reinforcing pipe 5 is arranged between the left fifth connecting plate 308 and the right fifth connecting plate 309, increasing the strength of the overall structure.

[0048] Further, please refer to Figure 5 , the extension assembly 6 includes an extension sheet metal 601, a left plastic support 602, a right plastic support 603 and a screw plastic support 604. The extension sheet metal 601 is connected to the screw plastic support 604 by a self-tapping screw.

[0049] In this embodiment, when the support sheet metal assembly 1 reaches the maximum deployment position, the lead screw motor 105 starts to rotate forward to drive the lead screw 106 to rotate forward. At this time, the lead screw 106 rotates forward to drive the lead screw plastic support 604, and the lead screw plastic support 604 pushes the extension sheet metal 601 to extend. When it moves to the maximum position of the leg rest extension assembly 6, the leg rest extension assembly 6 stops moving, and the extension assembly 6 reaches the maximum deployment position. Conversely, the lead screw motor 105 rotates in reverse to drive the extension sheet metal 601 to be retracted, realizing the movement of the extension assembly 6.

[0050] The working principle and usage process of the present utility model: When the motor in the concentric angle adjuster electric angle adjustment mechanism 306 works, it will drive the core shaft 305 to rotate together. The core shaft 305 drives the left angle adjuster 301 and the right angle adjuster 302 to rotate. The left angle adjuster 301 and the right angle adjuster 302 respectively drive the left fifth connecting plate 308 and the right fifth connecting plate 309 to rotate. The rotation action is finally transmitted to the support sheet metal assembly 1 through the four-link connecting plate in the four-link connecting plate module 2, so that the entire electric leg rest realizes movement. When the support sheet metal assembly 1 is deployed to a certain angle, the left fifth connecting plate 308 and the right fifth connecting plate 309 interact with the limit sheet metal 4, restricting the continuous movement of the left fifth connecting plate 308 and the right fifth connecting plate 309, so that the support sheet metal assembly 1 stops moving. At this time, the support sheet metal assembly 1 reaches the maximum deployment position; when the support sheet metal assembly 1 reaches the maximum deployment position, the lead screw motor 105 starts to rotate forward to drive the lead screw 106 to rotate forward. At this time, the lead screw 106 rotates forward to drive the lead screw plastic support 604, and the lead screw plastic support 604 pushes the extension sheet metal 601 to extend. When it moves to the maximum position of the leg rest extension assembly 6, the leg rest extension assembly 6 stops moving, and the extension assembly 6 reaches the maximum deployment position. Conversely, the lead screw motor 105 rotates in reverse to drive the extension sheet metal 601 to be retracted, realizing the movement of the extension assembly 6.

[0051] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An electric extension leg support mechanism for a car seat, characterized in that: It comprises a supporting sheet metal component (1), a four-link connecting plate module (2), an electric angle adjustment mechanism module (3) and an extension component (6); The support sheet metal component (1) is provided with a screw motor (105) and a screw rod (106), and the screw motor (105) and the screw rod (106) are used to drive the extension component (6); The supporting sheet metal component (1) is connected to the electric angle adjustment mechanism module (3) via the four-link connecting plate module (2); the electric angle adjustment mechanism module (3) comprises two groups of dual-core components, the two groups of dual-core components are relatively spaced apart, a core shaft (305) is provided between the two groups of dual-core components, a concentric angle adjuster is provided on the core shaft (305), and a thrust retaining ring (307) for locking the core shaft (305) is provided on the core shaft (305).

2. The electric extension leg support mechanism for a car seat according to claim 1, characterized in that: The supporting sheet metal component (1) further comprises an upper supporting sheet metal (101), a lower supporting sheet metal (102), a left supporting sheet metal (103) and a right supporting sheet metal (104).

3. The electric extension leg support mechanism for a car seat according to claim 1, characterized in that: The four-link connecting plate module (2) comprises a first left connecting plate (201), a second left connecting plate (202), a third left connecting plate (203) and a fourth left connecting plate (204) on the left, and a first right connecting plate (205), a second right connecting plate (206), a third right connecting plate (207) and a fourth right connecting plate (208) on the right. The four-link connecting plates on the left and right sides are symmetrically arranged on both sides of the supporting sheet metal component (1), and the four-link connecting plates are connected by riveting.

4. The electric extension leg support mechanism for a car seat according to claim 1, characterized in that: The concentric angle adjuster comprises a left angle adjuster (301) and a right angle adjuster (302), wherein the left angle adjuster (301) is fixedly arranged on a left lap plate (303), and the right angle adjuster (302) is fixedly arranged on a right lap plate (304), and the mandrel (305) is arranged between the left angle adjuster (301) and the right angle adjuster (302), and the outer wall of the mandrel (305) is provided with a concentric angle adjuster electric angle adjustment mechanism (306).

5. The electric extension leg support mechanism for a car seat according to claim 4, characterized in that: Position limiting sheet metal (4) is provided on both the left lap plate (303) and the right lap plate (304).

6. The electric extension leg support mechanism for a car seat according to claim 1, characterized in that: The electric angle adjustment mechanism module (3) also includes a fifth left connecting plate (308) and a fifth right connecting plate (309), wherein the fifth left connecting plate (308) and the fifth right connecting plate (309) are connected to the four-link connecting plate module (2), and a reinforcing tube (5) is provided between the fifth left connecting plate (308) and the fifth right connecting plate (309).

7. The electric extension leg support mechanism for a car seat according to claim 1, characterized in that: The extension component (6) comprises an extension sheet metal (601), a left plastic support (602), a right plastic support (603) and a screw rod plastic support (604); the extension sheet metal (601) and the screw rod plastic support (604) are connected by self-tapping screws.

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