Seat adjustment structure and seat assembly

Abstract

The invention discloses a seat adjustment structure, comprising an inner slide rail (1), an outer slide rail (2) and a locking mechanism (3), wherein a U-shaped inner tooth hole (1a) is arranged on the side wall of the inner slide rail (1) to form a first locking portion (1b) extending downward, and a plurality of tooth grooves (2a) with lower ends opened are arranged on the side wall of the outer slide rail (2), and a second locking portion (2b) is formed between two adjacent tooth grooves (2a), and the locking mechanism (3) has an annular locking tooth, and a lateral edge thereof passes through the inner tooth hole (1a); the locking tooth can move in a vertical direction to fit the corresponding first locking portion (1b) and the second locking portion (2b), and the inner locking edge (31a) of the locking tooth is rigidly limited with the locking hole end (1aa) of the inner tooth hole (1a), and the outer locking edge (31b) is rigidly limited with the tooth groove (2a) to realize the locking function; the locking tooth can also be separated from the corresponding second locking portion (2b) to realize the unlocking function. The invention also provides a seat assembly. The present invention can effectively improve the riding comfort of customers.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle seats, and in particular to a seat adjustment structure and a seat assembly. Background Art

[0002] Car seat slides are important functional components of car seats. They are installed at the bottom of the seat to adjust the front and rear position of the seat and enhance the comfort of the car seat. They usually include inner slides and outer slides, wherein the outer slide is fixed to the car body, and the inner slide can slidably cooperate with the outer slide and is fixedly connected to the seat.

[0003] The car seat rail is further equipped with a locking mechanism to lock or unlock the relative position of the inner rail and the outer rail. Therefore, the reliability of the locking mechanism directly affects the comfort of the car seat. At the same time, with the development of the automobile industry, customers have higher and higher requirements for the comfort of car seats, especially the swing clearance of the seat rail.

[0004] When the locking mechanism of the prior art is in use, it is impossible to ensure that the inner slide rail and the outer slide rail are completely locked, and passengers sitting on the seat can obviously feel the seat rocking back and forth, affecting the riding comfort. Summary of the invention

[0005] The purpose of the present invention is to provide a seat adjustment structure to ensure that the seat will not shake in a locked state, thereby improving the riding comfort of passengers.

[0006] In order to solve the above technical problems, the present invention provides a seat adjustment structure, comprising an inner slide rail, an outer slide rail and a locking mechanism, wherein the side wall of the inner slide rail is provided with an inner tooth hole, the inner tooth hole is U-shaped and forms a first locking portion extending downward, the corresponding side wall of the outer slide rail is provided with a plurality of tooth grooves with lower end openings, the plurality of tooth grooves are arranged along the length direction, a second locking portion is formed between two adjacent tooth grooves, and the locking mechanism has an annular locking tooth, the lateral edge of the locking tooth passes through the inner tooth hole;

[0007] The locking tooth can move in the vertical direction to fit the corresponding first locking part and the second locking part, and the inner locking edge in the locking tooth is rigidly limited with the locking hole end corresponding to the inner tooth hole, and the outer locking edge is rigidly limited with the corresponding tooth groove to realize the locking function; the locking tooth can also be detached from the corresponding second locking part to realize the unlocking function.

[0008] The present invention rigidly limits the inner locking edge and the inner slide rail in the lock tooth, and the outer locking edge and the outer slide rail. On the one hand, it ensures that the inner slide rail and the outer slide rail do not move relative to each other in the locked state, thereby improving the riding comfort of customers. On the other hand, this limiting method only requires that the lock tooth body with annular lock teeth in the locking mechanism is made of rigid material, and the materials of other components are not restricted, that is, both rigid materials and flexible materials can be used. When flexible materials are used, the overall weight of the seat adjustment structure can be effectively reduced, meeting the lightweight requirements.

[0009] Optionally, the locking mechanism includes a lock tooth body and a lock body, the lock tooth body has the annular lock tooth, the lock body is made of a flexible material, and a side wall thereof is provided with a mounting hole, the annular lock tooth is inserted into the mounting hole and has an interference fit with the mounting hole.

[0010] Optionally, the locking tooth body has four annular locking teeth, wherein the inner locking edge and the outer locking edge are located at two ends of the locking tooth body.

[0011] Optionally, the width of the locking hole end gradually decreases from bottom to top, and the width of the uppermost end of the locking hole end is slightly smaller than the width of the inner locking edge.

[0012] Optionally, the width of the tooth groove gradually decreases from bottom to top, and the width of the uppermost end of the tooth groove is slightly smaller than the width of the outer locking edge.

[0013] Optionally, in the lock tooth body, except for the inner locking edge and the outer locking edge, other tooth segments extending in the transverse direction are matched with the vertical hole segments corresponding to the inner tooth holes and the tooth groove gaps.

[0014] Optionally, the side wall of the inner slide rail is further provided with at least one anti-error hole connected to the inner tooth hole, and the locking mechanism is provided with at least one anti-error protrusion connected to the lock tooth body, and the anti-error protrusion can be inserted into the anti-error hole.

[0015] Optionally, a slideway extending along the length direction is formed between corresponding side walls of the inner slide rail and the outer slide rail, and a rolling component is arranged inside the slideway.

[0016] Optionally, it further includes an elastic member and a driving mechanism, wherein the driving mechanism is used to apply a driving force to the locking mechanism to switch the locking mechanism to an unlocking position, and in the unlocking state, the elastic member is in an energy storage state.

[0017] The present invention also provides a seat assembly, including a seat body and the aforementioned seat adjustment mechanism, wherein the inner slide rail is fixedly connected to the seat body, and the outer slide rail is fixedly connected to the bottom plate.

[0018] The seat assembly of the present invention includes the aforementioned seat adjustment mechanism, and thus has the same technical effects as the aforementioned seat adjustment mechanism, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A split diagram of a specific embodiment of the seat adjustment mechanism provided by the present invention;

[0020] Figure 2 for Figure 1 A transverse cross-sectional view of the seat adjustment mechanism;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of the locking mechanism in the seat adjustment structure;

[0022] Figure 4 for Figure 1 A partial enlarged view of the inner slide rail in the seat adjustment mechanism;

[0023] Figure 5 for Figure 1 A cross-sectional view of a locking mechanism in a seat adjustment mechanism in a locked state;

[0024] in, Figure 1-Figure 5 The reference numerals are described as follows:

[0025] 1-inner slide rail; 1a-inner tooth hole; 1aa-locking hole end; 1b-first locking part; 2-outer slide rail; 2a-tooth groove; 2b-second locking part; 3-locking mechanism; 31-locking tooth body; 31a-inner locking edge; 31b-outer locking edge; 32-lock body; 33-anti-mistake protrusion; 4-rolling component; 5-elastic member. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] The words "first", "second", etc. mentioned in this article are only for the convenience of describing two or more structures or components with the same or similar structures and / or functions, and do not imply any special limitation on the order and / or importance.

[0028] Herein, the “length direction” refers to the extension direction of the inner slide rail 1 and the outer slide rail 2 , and the direction perpendicular to the length direction is defined as the “lateral direction”.

[0029] Please refer to Figure 1 , Figure 1 This is a split diagram of a specific embodiment of the seat adjustment mechanism provided by the present invention.

[0030] The present invention provides a seat adjustment structure, including an inner slide rail 1 and an outer slide rail 2 that cooperate with each other, and a locking mechanism 3. The inner slide rail 1 is used for fixedly connecting with the seat, and the outer slide rail 2 is used for fixedly connecting with the vehicle body floor. The inner slide rail 1 can move relative to the outer slide rail 2 in the length direction to adjust the position of the seat in the front-rear direction. The locking mechanism 3 is used for locking or unlocking the relative position of the inner slide rail 1 and the outer slide rail 2.

[0031] Among them, the cross-sectional shape of the inner slide rail 1 is in the shape of "Ji" (a Chinese character). On the side walls of the two vertical sides on one side, inner tooth holes 1a are correspondingly arranged. The inner tooth holes 1a are specifically U-shaped, including two vertical hole segments and one horizontal hole segment, and form a first locking portion 1b extending downward. In a specific embodiment, the number of inner tooth holes 1a is 4, and the four inner tooth holes 1a are arranged in the middle of the inner slide rail 1 in the length direction. Of course, the number of inner tooth holes 1a is not limited to four, and the specific set number can be changed according to specific application requirements; the cross-sectional shape of the outer slide rail 2 is in the shape of "concave" with an open upper end. On the innermost and higher side wall, a plurality of tooth grooves 2a with open lower ends are provided. The plurality of tooth grooves 2a are arranged in the length direction, and a second locking portion 2b is formed between adjacent two tooth grooves 2a.

[0032] Please refer to Figure 2-Figure 5 , Figure 2 For Figure 1 the cross-sectional view of the seat adjustment mechanism in the horizontal direction; Figure 3 For Figure 1 the structural schematic diagram of the locking mechanism in the seat adjustment structure; Figure 4 For Figure 1 the partial enlarged view of the inner slide rail in the seat adjustment mechanism; Figure 5 For Figure 1 the cross-sectional view of the locking mechanism in the seat adjustment mechanism in the locked state.

[0033] In the present invention, the locking mechanism 3 is located inside the inner slide rail 1 and has annular locking teeth. In combination with Figure 2 and Figure 3 understanding, the lateral side of the locking teeth passes through the inner tooth holes 1a. The locking teeth can move in the vertical direction. When at the uppermost end, the locking teeth are simultaneously sleeved on the corresponding first locking portion 1b and the second locking portion 2b. And the inner locking edge 31a in the locking teeth is rigidly limited with the locking hole end 1aa of the corresponding inner tooth hole 1a, and the outer locking edge 31b is rigidly limited with the corresponding tooth groove 2a to achieve the locking function; the locking teeth can also disengage from the corresponding second locking portion 2b to achieve the unlocking function. For example, when the locking mechanism 3 is subjected to a downward acting force, the locking teeth will move downward in the vertical direction and disengage from the second locking portion 2b. However, the locking teeth are still inserted into the inner tooth holes 1a. Therefore, when the inner slide rail 1 moves, the locking mechanism 3 will move synchronously with the inner slide rail 1, that is, the locking mechanism 3 and the inner slide rail 1 are relatively fixed.

[0034] The present invention rigidly limits the inner locking edge 31a in the lock tooth and the inner slide rail 1, and the outer locking edge 31b and the outer slide rail 2. On the one hand, it ensures that the inner slide rail 1 and the outer slide rail 2 will not move relative to each other in the locked state, thereby improving the riding comfort of customers; on the other hand, this limiting method only needs to ensure that the lock tooth body with annular lock teeth in the locking mechanism 3 is made of rigid material, and the materials of other components are not limited, that is, both rigid material and flexible material can be used. In this embodiment, the locking mechanism 3 includes a lock tooth body 31 and a lock body 32, the lock tooth body 31 has the aforementioned annular lock teeth, the lock body 32 is made of flexible material, and its side wall is provided with mounting holes, the number of mounting holes is equal to the number of annular lock teeth of the lock tooth body 31, and the annular lock teeth of the lock tooth body 31 are interference fit with the corresponding mounting holes. Such a setting not only effectively reduces the overall weight of the seat adjustment structure and meets the requirements of lightweight; and the lock tooth body 31 and the lock body 32 are fixed by interference fit, the connection is stable, and the structure is simple.

[0035] The lock body 32 is made of a flexible material, specifically plastic, nylon block, etc.

[0036] like Figure 4 As shown, in this embodiment, the lock tooth body 31 has four annular lock teeth, and one end of the four annular lock teeth is fixed together to form a connecting portion. The lock body 32 also has four mounting holes. The inner side wall of the lock body 32 is also provided with a mounting groove extending along the length direction, and the mounting groove is connected to the four mounting holes at the same time. When the annular lock tooth is inserted into the corresponding mounting hole, the connecting portion of the lock tooth body 31 is located in the mounting groove.

[0037] Of course, in practical applications, the number of the locking tooth bodies 31 is not limited to four, and the specific number can be changed according to specific application requirements.

[0038] Furthermore, when the lock tooth body 31 has four annular lock teeth, the inner locking edge 31a and the outer locking edge 31b are located at the two ends of the lock tooth body 31. The positions of the inner locking edge 31a and the outer locking edge 31b are not unique, and they can also be arranged in the middle position of the locking structure 3. However, they are arranged at both ends, which has better locking stability and is a more preferred solution.

[0039] Of course, the positions of the inner locking edge 31a and the outer locking edge 31b are actually related to the number of the locking tooth bodies 31. When the number of the locking tooth bodies 31 is four, the inner locking edge 31a and the outer locking edge 31b are arranged at both ends of the locking structure 3, which has better stability; and when the number of the locking tooth bodies 31 is eight or more, the inner locking edge 31a and the outer locking edge 31b are arranged in the middle of the locking structure 3, which has better stability. Therefore, in practical applications, the number of the locking tooth bodies 31 should be fully considered to determine the positions of the inner locking edge 31a and the outer locking edge 31b to ensure the stability of locking.

[0040] Please continue to refer to Figure 5 In the locked state, the inner locking edge 31a and the locking hole end 1aa of the corresponding inner tooth hole 1a are rigidly limited. Specifically in this embodiment, it is achieved as follows: from bottom to top, the width of the locking hole end 1aa gradually decreases, and the width of the uppermost end of the locking hole end 1aa is slightly smaller than the width of the inner locking edge 31a. In this way, in the locked state, the inner locking edge 31a and the locking hole end 1aa are wedged tightly to achieve limitation.

[0041] The above “slightly smaller than” is defined as the width of the uppermost end of the locking hole end 1aa being smaller than the width of the inner locking edge 31a by 0.3-0.5 mm.

[0042] Please continue to refer to Figure 3 and Figure 4 , the outer locking edge 31b is rigidly limited with the corresponding tooth groove 2a. Specifically in this embodiment, it is realized as follows: the width of the tooth groove 2a gradually decreases from bottom to top, and the width of the upper end of the tooth groove 2a is slightly smaller than the width of the outer locking edge 31b. Therefore, in the locked state, the outer locking edge 31b is inserted into the upper end of one of the tooth grooves 2a and wedged with the tooth groove 2a to achieve the limit. Of course, from Figure 5 It can be seen from the figure that the width of the vertical hole section at the rightmost end of the inner gear hole 1a is greater than the width of the other vertical hole ends, and the vertical hole end is used to accommodate the outer locking edge 31b.

[0043] The above “slightly smaller than” is defined as the width of the uppermost end of the tooth groove 2a being smaller than the width of the outer locking edge 31b by 0.3-0.5mm, thereby ensuring that the outer locking edge 31b can be smoothly inserted into the tooth groove 2a without relative movement in the length direction.

[0044] Of course, in the lock tooth body 31, except for the inner locking edge 31a and the outer locking edge 31b, other tooth segments extending laterally are all matched with the vertical hole segments and tooth grooves 2a of the corresponding inner tooth holes 1a to ensure that the locking mechanism 3 is smoother when switching positions.

[0045] like Figure 5 As shown, the side wall of the inner slide rail 1 of the present invention is also provided with two anti-misalignment holes 1c connected to the inner tooth hole 1a, as shown in FIG. Figure 3 , Figure 4As shown, the locking mechanism 3 is provided with two anti-error protrusions 33 at corresponding positions, which are respectively connected to the lock tooth body 31 at corresponding positions. Of course, in this embodiment, the two are actually an integrated structure, and the anti-error protrusion 33 can be inserted into the anti-error hole 1c, playing an anti-error role during the installation process.

[0046] In practical applications, there is no limitation on the position and number of the error-proofing protrusions 33 , and the number of the error-proofing protrusions 33 may be at least one.

[0047] Please continue to refer to Figure 1 and Figure 2 A slideway extending in the length direction is formed between the corresponding side walls of the inner slide rail 1 and the outer slide rail 2, and a rolling component 4 is arranged inside the slideway, so that the inner slide rail 1 can slide more smoothly relative to the outer slide rail 2, and the seat position can be adjusted more smoothly.

[0048] In addition, it also includes an elastic member 5 and a driving mechanism. The elastic member 5 is specifically a long columnar structure, the middle part of which is connected to the locking mechanism 3, and both ends are clamped on the inner slide rail 1. The driving mechanism is used to apply a driving force to the locking mechanism 3 to switch the locking mechanism 3 to the unlocking position, and in the unlocking state, the elastic member 5 is in an energy storage state.

[0049] With such arrangement, when the occupant needs to adjust the position of the seat, the driving mechanism can first apply a downward driving force to the locking mechanism 3, so that the locking mechanism 3 disengages from the second locking portion 2b and switches to the unlocked position. Then, a force in the front-to-rear direction is applied to the seat, i.e., a force along the length direction of the inner slide rail 1 and the outer slide rail 2, to adjust the position of the seat. When the seat is adjusted to a suitable position, the operator can remove the force applied to the locking mechanism 3 through the driving mechanism, and the locking mechanism 3 can automatically return to the locked position under the action of the restoring force of the elastic member 5.

[0050] The present invention further provides a seat assembly, comprising a seat body and the aforementioned seat adjustment mechanism, wherein the inner slide rail 1 is fixedly connected to the seat body, and the outer slide rail 2 is fixedly connected to the bottom plate.

[0051] The seat assembly of the present invention includes the aforementioned seat adjustment mechanism, and thus has the same technical effects as the aforementioned seat adjustment mechanism, which will not be described in detail herein.

[0052] The above is a detailed introduction to a seat adjustment structure and a seat assembly provided by the present invention. The principle and implementation method of the present invention are described in detail using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, the present invention can also be improved and modified without departing from the principle of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A seat adjustment structure, characterized in that: The invention comprises an inner slide rail (1), an outer slide rail (2) and a locking mechanism (3), wherein the side wall of the inner slide rail (1) is provided with an inner tooth hole (1a), the inner tooth hole (1a) is U-shaped and forms a first locking portion (1b) extending downward, the corresponding side wall of the outer slide rail (2) is provided with a plurality of tooth grooves (2a) with lower ends open, the plurality of tooth grooves (2a) are arranged along the length direction, and a second locking portion (2b) is formed between two adjacent tooth grooves (2a), and the locking mechanism (3) has an annular locking tooth, and the lateral edge of the locking tooth passes through the inner tooth hole (1a); The locking tooth can move in the vertical direction to fit the corresponding first locking portion (1b) and the second locking portion (2b), and the inner locking edge (31a) in the locking tooth is rigidly limited with the locking hole end (1aa) corresponding to the inner tooth hole (1a), and the outer locking edge (31b) is rigidly limited with the corresponding tooth groove (2a) to achieve a locking function; the locking tooth can also be separated from the corresponding second locking portion (2b) to achieve an unlocking function; The inner locking edge (31a) and the outer locking edge (31b) are formed by different tooth segments in the locking teeth. Except for the inner locking edge (31a) and the outer locking edge (31b), other tooth segments extending in the transverse direction are all clearance-matched with the vertical hole segments corresponding to the inner tooth holes (1a) and the tooth grooves (2a).

2. The seat adjustment structure according to claim 1, characterized in that: The locking mechanism (3) comprises a lock tooth body (31) and a lock body (32), wherein the lock tooth body (31) has the annular lock tooth, the lock body (32) is made of a flexible material and has a mounting hole on its side wall, the annular lock tooth is inserted into the corresponding mounting hole and is interference fit with the mounting hole.

3. The seat adjustment structure according to claim 2, characterized in that: The locking tooth body (31) has four annular locking teeth, wherein the inner locking edge (31a) and the outer locking edge (31b) are located at two ends of the locking tooth body (31).

4. The seat adjustment structure according to any one of claims 1 to 3, characterized in that: The width of the locking hole end (1aa) gradually decreases from bottom to top, and the width of the uppermost end of the locking hole end (1aa) is slightly smaller than the width of the inner locking edge (31a).

5. The seat adjustment structure according to any one of claims 1 to 3, characterized in that: The width of the tooth groove (2a) gradually decreases from bottom to top, and the width of the uppermost end of the tooth groove (2a) is slightly smaller than the width of the outer locking edge (31b).

6. The seat adjustment structure according to claim 2, characterized in that: The side wall of the inner slide rail (1) is also provided with at least one anti-error hole (1c) connected to the inner tooth hole (1a), and the locking mechanism (3) is provided with at least one anti-error protrusion (33) connected to the locking tooth body (31), and the anti-error protrusion (33) can be inserted into the anti-error hole (1c).

7. The seat adjustment structure according to any one of claims 1 to 3, characterized in that: A slideway extending in the length direction is formed between corresponding side walls of the inner slideway (1) and the outer slideway (2), and a rolling component (4) is arranged inside the slideway.

8. The seat adjustment structure according to any one of claims 1 to 3, characterized in that: It also comprises an elastic member (5) and a driving mechanism, wherein the driving mechanism is used to apply a driving force to the locking mechanism (3) so as to switch the locking mechanism (3) to an unlocking position, and in the unlocking state, the elastic member (5) is in an energy storage state.

9. A seat assembly, comprising a seat body and an adjustment mechanism, characterized in that: The adjustment mechanism is the seat adjustment structure according to any one of claims 1 to 8, and the inner slide rail (1) is fixedly connected to the seat body, and the outer slide rail (2) is fixedly connected to the bottom plate.

Images