Seat adjusting mechanism and vehicle seat

Abstract

The utility model relates to a seat adjusting mechanism and a vehicle seat. The seat adjusting mechanism comprises a seat adjustable frame and a seat adjusting mechanism, a base; the two connecting rod assemblies are oppositely arranged, the two connecting rod assemblies are connected between the seat adjustable frame and the base respectively and are configured to enable the seat adjustable frame to move between an initial position and a heightening position and between the initial position and a zero-gravity position respectively, and the two connecting rod assemblies are arranged on the base respectively. Each connecting rod assembly comprises a first connecting rod and a second connecting rod which are connected in a pivoted mode, the first connecting rods are connected with the seat adjustable frame in a pivoted mode, the second connecting rods are supported on the base through supports, and the supports comprise limiting parts. The limiting part is configured to be capable of making contact with the first connecting rod so as to limit further movement of the first connecting rod. By means of the technical scheme, the requirement for riding comfort can be met, and meanwhile better seat stability and reliability are provided.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a seat adjustment mechanism and a vehicle seat comprising the seat adjustment mechanism. Background Art

[0002] With the widespread use of vehicles and the development of the automotive industry, more and more customers are paying attention to a more comfortable riding experience and have higher requirements for the riding comfort of vehicle seats. Zero-gravity seats have become a market trend. Compared with traditional seats, zero-gravity seats can provide a more comfortable riding experience.

[0003] However, while existing vehicle seats meet the requirements of riding comfort, there is still room for further improvement in terms of improving vehicle seat stability and reliability. Utility Model Content

[0004] In view of this, the present invention provides a seat adjustment mechanism and a vehicle seat including the seat adjustment mechanism.

[0005] According to one aspect of the present invention, a seat adjustment mechanism is provided, which includes: an adjustable seat frame; a base; and two link assemblies arranged opposite to each other, wherein the two link assemblies are respectively connected between the adjustable seat frame and the base, and are configured to enable the adjustable seat frame to move between an initial position and a height adjustment position and between the initial position and a zero gravity position, respectively, wherein each of the link assemblies includes a first link and a second link that are pivotally connected, wherein the first link is pivotally connected to the adjustable seat frame, the second link is supported on the base through a bracket, and the bracket includes a limiting portion, and the limiting portion is configured to be able to contact the first link to limit further movement of the first link.

[0006] According to one embodiment of the present invention, the bracket includes a main body and a connecting portion arranged on the main body, and the connecting portion is pivotally connected to the second link; the limiting portion is arranged on the main body and includes a first limiting portion connected to the connecting portion, and the first limiting portion is configured to block further movement of the first link when the adjustable seat frame is in the initial position.

[0007] According to an embodiment of the present invention, the limiting portion further includes a second limiting portion arranged opposite to the first limiting portion, and the second limiting portion is configured to block further movement of the first link when the seat adjustable frame is in the height adjustment position.

[0008] According to one embodiment of the present invention, the first connecting rod includes a first end and a second end relative to each other, and when the seat adjustable frame is in the initial position, the first end abuts against the first limiting portion, and when the seat adjustable frame is in the height adjustment position, the second end abuts against the second limiting portion.

[0009] According to one embodiment of the present invention, the second links of the two link assemblies are connected by a transverse link, the second link is connected to the bracket through a first pivot point and is connected to the first link through a second pivot point, the transverse link is connected to the second link at a position between the first pivot point and the second pivot point, and the seat adjustment mechanism further includes a first drive unit connected to the transverse link, the first drive unit is configured to drive the seat adjustable frame to move between the initial position and the zero gravity position.

[0010] According to one embodiment of the present utility model, the first driving unit includes a motor, a screw driven by the motor, and a sleeve for receiving the screw, the motor is connected to the transverse connecting rod, the screw and the sleeve are arranged in a direction perpendicular to the transverse connecting rod, and the sleeve is supported on the base.

[0011] According to one embodiment of the present invention, the first pivot point is located above the screw rod, and when the seat adjustable frame is in the initial position, the screw rod is completely located in the sleeve, and when the seat adjustable frame is in the zero gravity position, the screw rod is at least partially located outside the sleeve.

[0012] According to one embodiment of the present invention, the first pivot point is located below the screw rod, and when the seat adjustable frame is located in the zero gravity position, the screw rod is completely located within the sleeve, and when the seat adjustable frame is located in the initial position, the screw rod is at least partially located outside the sleeve.

[0013] According to an embodiment of the present invention, the seat adjustment mechanism further includes a second driving unit disposed outside the seat adjustable frame, wherein the second driving unit is configured to drive the seat adjustable frame to move between the initial position and the height adjustment position.

[0014] According to another aspect of the present invention, a vehicle seat is provided, which includes the seat adjustment mechanism as described above.

[0015] The technical solution of the present invention can provide better vehicle seat stability and reliability while meeting the riding comfort requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the interior of a vehicle according to an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a seat adjustment mechanism according to an embodiment of the present invention from a first perspective, wherein the seat adjustable frame is in an initial position;

[0019] Figure 3 A second perspective diagram of a seat adjustment mechanism according to an embodiment of the present invention, wherein the seat adjustable frame is in an initial position;

[0020] Figure 4 This is a schematic top view of a seat adjustment mechanism according to an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of a seat adjustment mechanism according to an embodiment of the present invention from a first perspective, wherein the seat adjustable frame is in a raised position;

[0022] Figure 6 A schematic diagram of a seat adjustment mechanism according to an embodiment of the present invention from a first perspective, wherein the seat adjustable frame is in a zero-gravity position;

[0023] Figure 7a A schematic diagram of a bracket according to an embodiment of the present invention;

[0024] Figure 7b A schematic diagram of a bracket according to another embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a seat adjustment mechanism according to another embodiment of the present invention, wherein the seat adjustable frame is in an initial position; and

[0026] Figure 9 This is a schematic diagram of a seat adjustment mechanism according to another embodiment of the present invention, wherein the seat adjustable frame is in a zero-gravity position. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0029] The vehicles involved in the following embodiments may be standard gasoline-powered vehicles, hybrid vehicles, electric vehicles, fuel cell vehicles, two-wheeled or three-wheeled vehicles, ships, aircraft and / or any other type of vehicle. The vehicle includes components related to mobility, such as an engine, an electric motor, a transmission, a suspension, a drive shaft and / or wheels. The vehicle also includes components related to vehicle control, such as a vehicle controller, a vehicle bus, etc. The vehicle controller can be connected to the components in the vehicle via the vehicle bus to achieve control of these components. The vehicle can be non-autonomous, semi-autonomous (for example, some conventional motion functions are controlled by the vehicle) or autonomous (for example, motion functions are controlled by the vehicle without direct input from the driver).

[0030] As mentioned in the background section above, the inventors of the present invention recognized that existing vehicle seats, while still meeting ride comfort requirements, still require further improvement in terms of stability and reliability. Furthermore, during a vehicle collision, the seat adjustment mechanism must be able to withstand the forces of the collision while maintaining a certain level of stability. In response to the challenges of the prior art, the present invention, in one or more embodiments, provides a seat adjustment mechanism and a vehicle seat incorporating the same, aiming to address at least one of these challenges.

[0031] Figure 1 FIG2 is a schematic diagram showing a vehicle seat 20 provided in a vehicle 10 according to an embodiment of the present invention. Figure 1 The vehicle seat 20 may include a driver's seat 21, a passenger's seat 22, and a rear seat 23. Each of the driver's seat 21, the passenger's seat 22, and the rear seat 23 may include a seat cushion 12, a backrest 14, a headrest 16, and the seat adjustment mechanism 100 described herein. In some embodiments, for the comfort of vehicle occupants, the vehicle seat 10 provides adjustability in terms of the inclination of the seat cushion 12, the inclination of the backrest 14, the height of the headrest 16, and so on. In an embodiment of the present invention, the vehicle seat 20 is equipped with the seat adjustment mechanism 100 to ensure stability and reliability while ensuring riding comfort (e.g., achieving a zero-gravity seat). Those skilled in the art will appreciate that the seat adjustment mechanism 100 can be used not only in the vehicle seat 20 but also in various other suitable seats.

[0032] Figure 2-6FIG. 1 shows a schematic structural diagram of a seat adjustment mechanism 100 according to an embodiment of the present invention. Figure 2-6 As shown, the seat adjustment mechanism 100 includes a seat adjustable frame 105, a base 151, and two connecting rod assemblies 140 arranged opposite to each other. The two connecting rod assemblies 140 are respectively connected between the seat adjustable frame 105 and the base 151, and are configured to enable the seat adjustable frame 105 to be respectively adjusted as follows: Figure 2 and Figure 3 The initial position shown and Figure 5 The height adjustment position shown is between the initial position and the Figure 6 The seat can be adjusted to move between the zero gravity positions shown, wherein each link assembly 140 includes a first link 141 and a second link 143 that are pivotally connected, wherein the first link 141 is pivotally connected to the seat adjustable frame 105, and the second link 431 is supported on the base 151 through a bracket 125, and the bracket 125 includes a limit portion 120, which is configured to be able to contact the first link 141 to limit further movement of the first link 141.

[0033] The adjustable seat frame 105 is used to support the seat cushion 12 and may include two oppositely disposed seat frame side panels 101 and a front rod 102 and a rear rod 103 connecting the two seat frame side panels 101 and oppositely disposed. The rear rod 103 is further pivotally connected to the base 151 to enable the angle of the adjustable seat frame 105 relative to the base 151 to be adjusted, thereby enabling the height and / or angle of the seat cushion 12 relative to the floor (not shown) of the vehicle 10. As is well known in the art, the pivotal connection between the rear rod 103 and the base 151 can be achieved by providing a connecting rod, a pivot, or the like. Figure 2 and Figure 5 In the illustrated embodiment, the rear rod 103 can be connected to the base 151 via a tooth plate 170. The tooth plate 170 can include a tooth portion 171, a connecting arm 172 connected to the tooth portion 171, and a hole 173 pivotally connected to the rear rod 103. The connecting arm 172 is pivotally connected to the base 151 via a first support member 175 fixed to the base 151. The tooth portion 171 includes a plurality of teeth and can engage with a drive end of a second drive unit 160, described below, to drive the adjustable seat frame 105 between an initial position and a height adjustment position.

[0034] The base 151 can be fixed to the floor of the vehicle 10 to install the vehicle seat 20 in the vehicle 10. Figure 2 and Figure 3 In the illustrated embodiment, the base 151 may include two oppositely disposed seat rails 153 , through which the vehicle seat 20 may be moved along the longitudinal direction of the vehicle 10 (forward and backward directions of the vehicle 10 ).

[0035] The second links 143 of the two link assemblies 140 can be connected via a transverse link 107. The first links 141, the second links 143, and the transverse link 107 of the two link assemblies 140 define a five-link structure. This five-link structure enables adjustment of the adjustable seat frame 105 between an initial position and an elevated position or a zero-gravity position, as described in detail below. The first link 141 can be pivotally connected to the seat frame side panel 101. The second link 143 can be connected to the bracket 125 via a first pivot point 109 and to the first link 141 via a second pivot point 111. The transverse link 107 is connected to the second link 143 between the first pivot point 109 and the second pivot point 111. The provision of the bracket 125 in the present invention improves the reliability and stability of the five-link structure, thereby ensuring excellent stability of the adjustable seat frame 105 in both the initial position and the elevated position, thereby enhancing customer satisfaction. It should be understood that although the specific shape and structure of each link in the five-link structure are shown in an exemplary embodiment, the specific shape and structure of each link can be adjusted according to the positions of other components of the vehicle seat 20 that interact or may interact with the five-link structure. Figure 4 In the illustrated embodiment, the cross link 107 is a partially curved link. However, in other embodiments, the cross link 107 may be a generally straight link, as long as the shape and structure of the cross link can avoid interfering with other components of the vehicle seat 20. These variations are all within the scope of the present invention.

[0036] refer to Figure 7a , which shows a schematic structural diagram of a bracket 125 according to one embodiment of the present invention. The bracket 125 may include a main body 127 and a connecting portion 126 disposed on the main body 127. The connecting portion 126 may be pivotally connected to the second connecting rod 143, for example, via a hole, pin, or shaft. The stopper 120 is disposed on the main body 127 and includes a first stopper 121 connected to the connecting portion 126. The first stopper 121 is configured to block further movement of the first connecting rod 141 when the adjustable seat frame 105 is in the initial position. Furthermore, the stopper 120 further includes a second stopper 123 disposed opposite the first stopper 121. The second stopper 123 is configured to block further movement of the first connecting rod 141 when the adjustable seat frame 105 is in the height adjustment position. It should be understood that the "pivotal connection" described in the present invention can be achieved using commonly used components in the prior art, such as holes, pins, shafts, bolts, and nuts, and will not be further described here.

[0037] The structure and position of the main body 127, the connecting portion 126, the first limiting portion 121 and the second limiting portion 123 may depend on the position and / or height of the components to be connected. Figure 7aIn the embodiment shown, the main body 127 can be a plate-like member as a whole, and the connecting portion 126 can extend upward from the plate-like member in a direction substantially perpendicular to the plate-like member. The first limiting portion 121 extends from the connecting portion 126 in a direction that is at a certain angle (e.g., an obtuse angle) to the connecting portion 126. The second limiting portion 123 can be formed by protruding upward from the plate-like member. It should be understood that in other embodiments, the specific structure, orientation, and position of the various components of the bracket 125 can be different from the embodiment shown in FIG. Figure 7a The embodiments shown may vary depending on the location and height of the components to be connected. Figure 7a In the embodiment shown, the connecting portion 126 is a generally vertical structure, however, in Figure 7b In another embodiment shown, the connecting portion 126' can be a generally circular profile. These variations are all within the scope of the present invention.

[0038] Further references Figure 5 and Figure 3 , the first link 141 may include a first end 145 and a second end 147 opposite each other, wherein the first end 145 is pivotally connected to the seat frame side panel 101 and the second end 147 is adjacent to the second pivot point 111. Figure 3 In the initial position shown, the first end 145 can abut against the first stop portion 121, and when the seat adjustable frame 105 is in the position shown Figure 5 In the raised position shown, the second end 147 can abut the second stop 123. The first stop 121 and the second stop 123 of the bracket 125 restrict further movement of the first connecting rod 141 in both the initial and raised positions, respectively. This reduces unnecessary friction and collision between the connecting rod and other components of the mechanism, slowing wear and extending the service life of the entire seat adjustment mechanism 100. This also improves the overall quality of the vehicle seat 20 and enhances user satisfaction.

[0039] like Figure 4 As shown, the seat adjustment mechanism 100 further includes a first drive unit 130 connected to the cross link 107, and the first drive unit 130 is configured to drive the seat adjustable frame 105 to move in a direction similar to the following. Figure 2 and 3 The initial position shown and Figure 6The first drive unit 130 may include a motor 131, a lead screw 133 driven by the motor 131, and a sleeve 135 for receiving the lead screw 133. The motor 131, also known as the zero-gravity motor, may be connected to the cross-link 107. Compared to a solution where the motor 131 is connected to the side of the seat adjustment mechanism 100 (e.g., to the first or second link), connecting the motor 131 to the cross-link 107 enables force balance on both sides of the adjustable seat frame 105. The lead screw 133 and sleeve 135 are arranged perpendicular to the cross-link 107, and the sleeve 135 is supported on the base 151 via a second support member 155. When the seat cushion 12 of the vehicle seat 20 needs to be adjusted to the zero-gravity position, the motor 131 of the first drive unit 130 may be activated, thereby driving the lead screw 133 relative to the sleeve 135, thereby moving the adjustable seat frame 105 from the initial position to the zero-gravity position.

[0040] Reference again Figure 2 and Figure 6 , no matter the seat adjustable frame 105 is in the initial position or the zero gravity position, the first pivot point 109 is always located above the screw rod 133, so that the tie rod 107 can be "pushed" to the zero gravity position under the drive of the first drive unit 130. Specifically, when the seat adjustable frame 105 is in the initial position Figure 2 In the initial position shown, the screw rod 133 can be completely located in the sleeve 135. Under the drive of the motor 131, as the screw rod 133 is gradually rotated out of the sleeve 135, the seat adjustable frame 105 is gradually "pushed" to the position shown in FIG. Figure 6 In the zero-g position shown, the lead screw 133 is at least partially located outside the sleeve 135. Testing has shown that when the seat adjustable frame 105 is in the initial position, this arrangement improves the overall structural integrity of the first drive motor 130 (e.g., the lead screw 133) in simulated vehicle collisions, including frontal and rear collisions.

[0041] Reference again Figure 2 、 Figure 3 and Figure 5 The seat adjustment mechanism 100 may further include a second driving unit 160 disposed outside the seat adjustable frame 105, the second driving unit 160 being configured to drive the seat adjustable frame 105 in a manner such as Figure 3 The initial position shown and Figure 5The second drive unit 160 includes a motor 161 having a drive end 162. The motor 161 can be fixed to either of the two seat frame side panels 101. The drive end 162 of the motor 161 can extend through the seat frame side panels 101 into the adjustable seat frame 105 and include a rack (not shown). This rack can engage with the teeth 171 of the rack plate 170 described above. When the seat cushion 21 of the vehicle seat 20 is to be height-adjusted, the motor 161 is driven, and the engagement of the rack with the teeth 171 drives the adjustable seat frame 105 from the initial position to the height-adjusted position.

[0042] The first drive unit 130 and the second drive unit 160 operate independently of each other. When the seat cushion 21 of the vehicle seat 20 needs to be adjusted to a zero gravity position, the first drive unit 130 operates while the second drive unit 160 does not operate; when the seat cushion 21 of the vehicle seat 20 needs to be adjusted to a raised position, the second drive unit 160 operates while the first drive unit 130 does not operate.

[0043] Reference below Figure 8-9 , which shows a seat adjustment mechanism 200 according to another embodiment of the present invention. The structure of the seat adjustment mechanism 200 is largely the same as that of the seat adjustment mechanism 100, and its various components are represented by adding "100" to the reference numerals of the various components of the seat adjustment mechanism 100. For example, the seat adjustment mechanism 200 includes components such as a bracket 250, a first connecting rod 241, and a second connecting rod 243. The difference between the structure of the seat adjustment mechanism 200 and the seat adjustment mechanism 100 is that the first drive unit 230 of the seat adjustment mechanism 200 has a different actuation mode for the transverse connecting rod 207. Figure 8 and Figure 9 As shown, the first pivot point 209 is located below the screw rod 233, so that under the drive of the first drive unit 230, the cross rod 207 can be "pulled" to the zero gravity position. Figure 8 In the initial position shown, the screw rod 233 is at least partially located outside the sleeve 235. Driven by the motor 231, as the screw rod 233 gradually rotates into the sleeve 235, the seat adjustable frame 205 is gradually "pulled" to the position shown in FIG. Figure 9 The zero gravity position is shown, in which the screw 233 is completely located within the sleeve 235.

[0044] According to another aspect of the present invention, a vehicle seat 20 is provided, which may include the seat adjustment mechanism described in the present application, such as the seat adjustment mechanism 100 or 200 described in the aforementioned embodiments.

[0045] It should be understood that, unless there is a conflict, all of the above-described embodiments, features, and advantages of the seat adjustment mechanism 100 or 200 according to the present invention are equally applicable to the vehicle seat 20 according to the present invention. In other words, all of the above-described embodiments and variations of the seat adjustment mechanism 100 or 200 can be directly transferred and applied to the vehicle seat 20 according to the present application, and are directly incorporated herein. For the sake of brevity, these details will not be repeated here.

[0046] In summary, the present invention provides a seat adjustment mechanism and a vehicle seat including the seat adjustment mechanism. The solution provided by the present invention can meet the requirements of riding comfort while providing better seat stability and reliability.

[0047] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A seat adjustment mechanism, characterized in that: include: Adjustable seat frame; base; as well as Two connecting rod assemblies are arranged opposite to each other, and the two connecting rod assemblies are respectively connected between the seat adjustable frame and the base, and are configured to move the seat adjustable frame between an initial position and a height adjustment position and between the initial position and a zero gravity position, respectively. Each of the link assemblies includes a first link and a second link that are pivotally connected, wherein the first link is pivotally connected to the adjustable seat frame, and the second link is supported on the base through a bracket, and the bracket includes a limit portion, which is configured to be able to contact the first link to limit further movement of the first link.

2. The seat adjustment mechanism according to claim 1, characterized in that: The bracket includes a main body and a connecting portion arranged on the main body, the connecting portion being pivotally connected to the second link; the limiting portion is arranged on the main body and includes a first limiting portion connected to the connecting portion, the first limiting portion being configured to block further movement of the first link when the seat adjustable frame is in the initial position.

3. The seat adjustment mechanism according to claim 2, characterized in that: The limiting portion further includes a second limiting portion disposed opposite to the first limiting portion, and the second limiting portion is configured to block further movement of the first link when the seat adjustable frame is in the height adjustment position.

4. The seat adjustment mechanism according to claim 3, characterized in that: The first link includes a first end and a second end opposite to each other. When the seat adjustable frame is in the initial position, the first end abuts the first limit portion, and when the seat adjustable frame is in the height adjustment position, the second end abuts the second limit portion.

5. The seat adjustment mechanism according to claim 1, characterized in that: The second links of the two link assemblies are connected by a transverse link, the second link is connected to the bracket through a first pivot point and is connected to the first link through a second pivot point, the transverse link is connected to the second link at a position between the first pivot point and the second pivot point, and the seat adjustment mechanism further includes a first drive unit (130) connected to the transverse link, the first drive unit is configured to drive the seat adjustable frame to move between the initial position and the zero gravity position.

6. The seat adjustment mechanism according to claim 5, characterized in that: The first driving unit includes a motor, a screw driven by the motor, and a sleeve for receiving the screw. The motor is connected to the transverse connecting rod. The screw and the sleeve are arranged in a direction perpendicular to the transverse connecting rod, and the sleeve is supported on the base.

7. The seat adjustment mechanism according to claim 6, characterized in that: The first pivot point is located above the screw, and when the seat adjustable frame is in the initial position, the screw is completely located within the sleeve, and when the seat adjustable frame is in the zero-gravity position, the screw is at least partially located outside the sleeve.

8. The seat adjustment mechanism according to claim 6, characterized in that: The first pivot point is located below the screw, and when the seat adjustable frame is in the zero-gravity position, the screw is completely located within the sleeve, and when the seat adjustable frame is in the initial position, the screw is at least partially located outside the sleeve.

9. The seat adjustment mechanism according to claim 1, wherein: The invention further includes a second driving unit disposed outside the seat adjustable frame, wherein the second driving unit is configured to drive the seat adjustable frame to move between the initial position and the height adjustment position.

10. A vehicle seat, characterized in that: The seat adjustment mechanism comprises the seat adjustment mechanism according to any one of claims 1 to 9.

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