Seat guide, seat and vehicle

Abstract

The utility model belongs to the technical field of vehicle accessories, provide a seat guide bushing, seat and vehicle, seat guide bushing includes: guide bushing body, is equipped with the through space in it, first locking part is located on the guide bushing body, and first locking part includes locking part, and locking part has locking position and unlocking position, unlocking part is movably located on the guide bushing body along the insertion direction of headrest support rod, and one end of unlocking part and locking part swing abut, second locking part is movably located on the guide bushing body, and with unlocking part swing abut. Compared with prior art, the utility model sets up two -stage locking mechanism, namely first locking part is used for locking headrest support rod directly, and second locking part is used for locking unlocking part itself, forms " lock in lock " safety redundancy structure. The design effectively prevents the accidental unlocking caused by vibration, impact or child mistake in the process of vehicle driving, and significantly improves the reliability of headrest locking and driving safety.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle parts technology, specifically relating to a seat guide cover, a seat, and a vehicle. Background Technology

[0002] With the continuous development of the automotive industry, vehicle ride comfort and safety are receiving increasing attention. As an important component of vehicle interior, the structural design of seats directly affects the riding experience and driving safety of passengers. Among them, the headrest, as a key component that supports the occupant's head, reduces neck fatigue, and improves collision safety, is usually installed by inserting a pair of headrest support rods into a guide sleeve inside the seat back, and the headrest height is adjusted and fixed by a locking mechanism inside the guide sleeve.

[0003] Currently, most common seat covers on the market employ simple mechanical locking structures, such as using spring-driven steel wires or elastic claws to position and lock the headrest support rod. When adjusting the headrest height, the user presses or pulls an external operating component to disengage the locking part from the positioning hole on the headrest support rod, thereby unlocking and moving the headrest up and down. However, these traditional structures generally have a significant drawback: their unlocking action usually relies solely on the movement of a single operating component, lacking necessary safety redundancy mechanisms.

[0004] In actual use, especially when the vehicle is traveling at high speed or on bumpy roads, if a child passenger accidentally touches the unlocking part on the headrest cover (such as pressing a button) out of curiosity or misoperation, the headrest may accidentally unlock or even slide down automatically. This not only weakens the effective support of the headrest for the occupant's head and increases the risk of neck injury, but also, in the event of a sudden collision, the headrest, which cannot maintain a stable position, will be unable to perform its due passive safety protection function, seriously threatening the life safety of child passengers.

[0005] Furthermore, since most existing guide sleeve structures lack a secondary locking mechanism to prevent accidental triggering, unintended displacement of the unlocking component due to vibration, external interference, or material fatigue can easily lead to unexpected locking failures, posing a significant safety hazard. Therefore, improving the locking reliability of the seat guide sleeve while ensuring convenient headrest adjustment, especially in situations involving accidental operation by children, has become a pressing technical challenge in automotive seat design. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a seat guide sleeve, a seat, and a vehicle in light of the current state of the technology.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a seat guide sleeve is provided, which can lock and unlock the headrest support rod, the seat guide sleeve comprising:

[0008] The guide sleeve body has a through space inside, which is used for the insertion of the headrest support rod;

[0009] A first locking member is provided on the guide sleeve body. The first locking member includes a locking part, which has a locking position and an unlocking position. When the locking part is in the locking position, it engages with the headrest support rod inserted into the through space to fix the headrest support rod.

[0010] An unlocking component is movably disposed on the guide sleeve body along the insertion direction of the headrest support rod. One end of the unlocking component is movably abutted against the locking part, and is used to drive the locking part to switch between the locked position and the unlocked position.

[0011] The second locking element is movably disposed on the guide sleeve body and movably abuts against the unlocking element; wherein...

[0012] When the second locking member abuts against the unlocking member, the unlocking member can be fixed to the guide sleeve body, so that the locking part is kept in the locking position;

[0013] When the second locking member disengages from the unlocking member, the unlocking member can move and drive the locking part to switch to the unlocked position.

[0014] In one of the aforementioned seat guide sleeves, the guide sleeve body is provided with a movable space, the second locking member is movably disposed within the movable space, and the moving direction of the second locking member is parallel to the radial direction of the headrest support rod inserted into the guide sleeve body.

[0015] In one of the aforementioned seat guide sleeves, a first elastic member is provided within the moving space, with both ends of the first elastic member abutting against the inner wall of the moving space and the second locking member, respectively.

[0016] In one of the aforementioned seat guide sleeves, the second locking member includes an annular body and a first fixing part disposed at one end of the body, and the guide sleeve body includes a second fixing part formed on the side wall of the moving space.

[0017] Both the first fixing part and the second fixing part extend into the first elastic member to limit the first elastic member.

[0018] In one of the aforementioned seat guide sleeves, the unlocking member has an inclined surface, the locking part abuts against the inclined surface, and slides along the inclined surface when the unlocking member moves.

[0019] In the aforementioned seat guide sleeve, the unlocking component includes: a pressing part, a first limiting part, a cushioning part, and a guiding part;

[0020] The guide portion extends from the end face of the pressing portion toward the guide sleeve body, and the guide sleeve body is provided with a guide groove, and the guide portion is slidably inserted into the guide groove;

[0021] The first limiting part is located at the end of the unlocking member away from the pressing part, and the outer side of the guide sleeve body is provided with a second limiting part. The first limiting part abuts against the second limiting part to prevent the unlocking member from detaching from the guide sleeve body in the pulling direction.

[0022] The abutting part is provided on the pressing part and moves in contact with the second locking member.

[0023] In one of the aforementioned seat guide sleeves, a second elastic element is provided on the guide sleeve body, and the two ends of the second elastic element respectively abut against the pressing part and the guide sleeve body.

[0024] In one of the aforementioned seat guide sleeves, the guide sleeve body is provided with an installation groove, the installation groove being connected to the through space; the first locking element is a locking steel wire, the locking steel wire being fixed within the installation groove.

[0025] This utility model also proposes a seat to solve the above-mentioned technical problems, including the aforementioned seat guide sleeve.

[0026] This utility model solves the above-mentioned technical problems and also proposes a vehicle that includes the aforementioned type of seat.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] (1) By setting a dual-stage locking mechanism, the first locking element is used to directly lock the headrest support rod, while the second locking element is used to lock the unlocking element itself, forming a "lock within a lock" safety redundancy structure. This design effectively prevents accidental unlocking due to vibration, impact or accidental contact by children during vehicle operation, significantly improving the reliability of the headrest lock and driving safety.

[0029] (2) The second locking component moves radially along the headrest support rod, and its direction of movement is perpendicular to the axial movement of the unlocking component, which facilitates independent operation and linkage control. This layout not only saves space and has a compact structure, but also avoids interference with the headrest lifting action, improving assembly accuracy and operational stability. At the same time, it also facilitates safe unlocking operations by users through methods such as lateral pressing.

[0030] (3) By setting the first elastic element, a reset force can be provided for the second locking element. When the external force acting on the second locking element is released, it automatically rebounds to the initial locked position under the elastic force of the first elastic element, and re-presses the unlocking element, thereby ensuring that the locking system returns to the safe locking state. This design effectively avoids the safety hazards caused by failure to reset in time after operation, and improves the self-recovery capability and reliability of the system. Attached Figure Description

[0031] Figure 1 This is a perspective view of a seat guide sleeve according to the present invention.

[0032] Figure 2 yes Figure 1 Exploded view.

[0033] Figure 3 It is a 3D view of the unlocking and second locking components during installation.

[0034] Figure 4 This is a three-dimensional view of the guide sleeve body.

[0035] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0036] In the figure, 100 is the guide sleeve body; 110 is the through space; 120 is the moving space; 130 is the second fixing part; 140 is the guide groove; 150 is the second limiting part; 160 is the mounting groove; 200 is the first locking member; 210 is the locking part; 300 is the unlocking member; 310 is the inclined surface; 320 is the pressing part; 330 is the first limiting part; 340 is the abutting part; 350 is the guide part; 400 is the second locking member; 410 is the main body; 420 is the first fixing part; 500 is the first elastic member; and 600 is the second elastic member. Detailed Implementation

[0037] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0038] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0039] like Figures 1 to 5 As shown, this utility model discloses a seat guide sleeve, which can be used to lock and unlock the headrest support rod. The seat guide sleeve includes: a guide sleeve body 100, a first locking member 200, an unlocking member 300, and a second locking member 400.

[0040] Specifically, the guide sleeve body 100 is fixed to the seat, and its interior has a through space 110 for inserting a headrest support rod. A first locking member 200 is disposed on the guide sleeve body 100, and includes a locking part 210, which has a locked position and an unlocked position. When the locking part 210 is in the locked position, it engages with the headrest support rod inserted into the through space 110, thereby fixing the headrest support rod and making the headrest stably fixed to the seat. When the locking part 210 is in the unlocked position, it disengages from the headrest support rod, the headrest support rod is released, and the headrest enters an adjustable state relative to the seat, thereby realizing the adjustment of the headrest height.

[0041] The unlocking component 300 is movably disposed on the guide sleeve body 100 along the insertion direction of the headrest support rod, and one end of it is movably abutted against the locking part 210 to drive the locking part 210 to switch between the locked position and the unlocked position.

[0042] The second locking member 400 is movably disposed on the guide sleeve body 100 and movably abuts against the unlocking member 300. When the second locking member 400 abuts against the unlocking member 300, it can limit and fix the unlocking member 300 on the guide sleeve body 100, thereby preventing the unlocking member 300 from moving and keeping the locking part 210 in the locked position, and the headrest in a fixed state; when the second locking member 400 disengages from the unlocking member 300, the unlocking member 300 can move axially and drive the locking part 210 to switch to the unlocked position, thereby unlocking the headrest support rod and allowing it to be height adjusted relative to the seat.

[0043] This solution employs a dual-stage locking mechanism: the first locking element 200 directly locks the headrest support rod, while the second locking element 400 locks the unlocking element 300 itself, forming a "lock within a lock" safety redundancy structure. This design effectively prevents accidental unlocking due to vibration, impact, or accidental activation by children during vehicle operation, significantly improving the reliability of the headrest lock and driving safety.

[0044] Furthermore, the guide sleeve body 100 is provided with a moving space 120, and the second locking member 400 is movably disposed in the moving space 120, and the moving direction of the second locking member 400 is parallel to the radial direction of the headrest support rod inserted into the guide sleeve body 100.

[0045] The moving space 120 serves as a guide structure for the second locking element 400 and can be formed by creating a groove-like structure on the guide sleeve body 100. Guiding and limiting the second locking element 400 within the moving space 120 can be achieved by setting guide rails or sliding grooves. The second locking element 400 moves radially along the headrest support rod, and its direction of movement is perpendicular to the axial movement of the unlocking element 300, facilitating independent operation and coordinated control. This layout not only saves space and is compact but also avoids interference with the headrest's lifting action, improving assembly accuracy and operational stability. Simultaneously, it also facilitates safe unlocking operations by the user through methods such as lateral pressing.

[0046] In order to achieve automatic reset of the second locking member 400, this solution provides a first elastic member 500 in the moving space 120, with the two ends of the first elastic member 500 respectively abutting between the inner wall of the moving space 120 and the second locking member 400.

[0047] The first elastic element 500 is preferably a helical spring (or compression spring). By providing the first elastic element 500, a reset force can be provided to the second locking element 400. When the external force acting on the second locking element 400 is released, it automatically rebounds to the initial locked position under the elastic force of the first elastic element 500, re-pressing the unlocking element 300, thereby ensuring that the locking system returns to a safe locking state. This design effectively avoids safety hazards caused by failure to reset in time after operation, and improves the system's self-recovery capability and reliability.

[0048] The second locking member 400 includes an annular body 410, which allows the second locking member 400 to be fitted onto the outside of the headrest support rod, thereby facilitating the construction of a movement space 120 for its movement on the guide sleeve body 100. The second locking member 400 also includes a first fixing part 420 located at one end of the body 410; a second fixing part 130 is provided on the side wall of the movement space 120 of the guide sleeve body 100. Both the first fixing part 420 and the second fixing part 130 extend into the interior of the first elastic member 500 to axially limit the first elastic member 500.

[0049] This structure, through the combined action of the first fixing part 420 and the second fixing part 130, positions both ends of the first elastic element 500, effectively preventing it from shifting, falling off, or twisting during compression or rebound, ensuring uniform force distribution and stable and reliable operation of the elastic element. Simultaneously, the design of the annular body 410 facilitates coaxial assembly with the guide sleeve body 100, improving structural integration and assembly efficiency, enhancing overall reliability, and extending service life.

[0050] The unlocking component 300 has an inclined surface 310, the locking part 210 abuts against the inclined surface 310, and slides along the inclined surface 310 when the unlocking component 300 moves.

[0051] The inclined plane 310 structure enables smooth force conversion, allowing the axial movement of the unlocking component 300 to be efficiently converted into the radial retraction of the locking part 210, reducing operating resistance and improving unlocking sensitivity. Simultaneously, the guiding effect of the inclined plane 310 reduces the risk of jamming during movement, ensuring smooth and reliable locking and unlocking actions, and enhancing the user's operating experience.

[0052] The unlocking member 300 includes: a pressing part 320, a first limiting part 330, abutting part 340, and a guiding part 350; the guiding part 350 extends from the end face of the pressing part 320 toward the guide sleeve body 100, and the guide sleeve body 100 is provided with a guide groove 140, in which the guiding part 350 is slidably inserted; the first limiting part 330 is provided at the end of the unlocking member 300 away from the pressing part 320, and a second limiting part 150 is provided on the outer side of the guide sleeve body 100, the first limiting part 330 abutting against the second limiting part 150 to prevent the unlocking member 300 from disengaging from the guide sleeve body 100 in the pulling direction; the abutting part 340 is provided on the pressing part 320 and abuts against the second locking member 400.

[0053] The unlocking component 300 adopts an integrated multi-segment design. The guide part 350 and guide groove 140 work together to achieve precise linear movement and prevent deflection. The first limiting part 330 and the second limiting part 150 work together to effectively prevent the unlocking component 300 from falling off, ensuring structural integrity. The abutment part 340 ensures stable contact with the second locking component 400, achieving reliable linkage control. The overall structure is stable, the guidance is precise, and the anti-detachment is reliable, significantly improving operational durability and safety.

[0054] In order to achieve automatic reset of the unlocking component 300, the guide sleeve body 100 is provided with a second elastic component 600, the two ends of which abut against the pressing part 320 of the unlocking component 300 and the guide sleeve body 100 respectively.

[0055] The second elastic element 600 is preferably a coil spring or a compression spring, used to provide reset force for the unlocking element 300. When the user releases the external force on the pressing part 320, the unlocking element 300 automatically returns to its initial position under the elastic force of the second elastic element 600, avoiding the system being in a pending unlocking state for a long time due to failure to reset in time, thereby effectively eliminating potential safety hazards. At the same time, the buffering effect of the second elastic element 600 can reduce the impact during operation, improve the comfort of operation, and make the entire locking and unlocking process more stable and reliable.

[0056] The guide sleeve body 100 is provided with an installation groove 160, which is connected to the through space 110; the first locking member 200 is a locking steel wire, which is fixed in the installation groove 160.

[0057] Using a locking steel wire as the first locking element 200 results in a simple structure, low cost, high strength, and ease of processing and assembly. The design of the mounting groove 160 facilitates precise positioning and fixing of the steel wire, ensuring that its locking part 210 always accurately acts on the positioning hole of the headrest support rod, improving locking accuracy and response speed, while also facilitating mass production and reducing manufacturing costs.

[0058] This solution also proposes a seat, including the aforementioned seat guide sleeve.

[0059] This solution also proposes a vehicle, including automobiles, trucks, buses, and other means of transportation equipped with adjustable headrests.

[0060] This solution provides a seat guide cover with multiple safety protection functions and its application in seats and vehicles. Addressing the common shortcomings of existing seat guide covers, such as reliance on a single unlocking mechanism, lack of safety redundancy, and susceptibility to accidental unlocking of the headrest due to vibration or child misoperation, this invention innovatively incorporates a two-stage locking system consisting of a first locking component 200, an unlocking component 300, and a second locking component 400.

[0061] The first locking component 200 directly locks and releases the headrest support rod, ensuring the reliability of the headrest height adjustment. The second locking component 400 locks the unlocking component 300 itself, forming a safety logic of "unlocking the secondary lock first, then triggering the main unlock," effectively preventing the risk of accidental locking caused by non-command operations. This dual protection mechanism significantly improves the stability and safety of the headrest during vehicle operation.

[0062] The overall structure is compact and rationally designed. Through auxiliary structures such as inclined plane 310 transmission, elastic reset, and guide limit, it achieves excellent performance in terms of smooth operation, sensitive response, and durability against slippage. At the same time, key components such as locking wire and integrated unlocking component 300 adopt modular design, which facilitates assembly and maintenance and is conducive to mass production.

[0063] In summary, this utility model not only solves the prominent safety hazards of traditional seat guide sleeves, but also achieves a good balance between structural reliability, operational comfort, and manufacturing feasibility. It has significant technological advancements and broad application prospects, providing a practical and effective technical solution for improving the passive safety level of the entire vehicle.

[0064] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0065] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0066] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A seat guide sleeve for locking and unlocking a headrest support rod, characterized in that, The seat guide sleeve includes: The guide sleeve body has a through space inside, which is used for the insertion of the headrest support rod; A first locking member is provided on the guide sleeve body. The first locking member includes a locking part, which has a locking position and an unlocking position. When the locking part is in the locking position, it engages with the headrest support rod inserted into the through space to fix the headrest support rod. An unlocking component is movably disposed on the guide sleeve body along the insertion direction of the headrest support rod. One end of the unlocking component is movably abutted against the locking part, and is used to drive the locking part to switch between the locked position and the unlocked position. The second locking element is movably disposed on the guide sleeve body and movably abuts against the unlocking element; wherein... When the second locking member abuts against the unlocking member, the unlocking member can be fixed to the guide sleeve body, so that the locking part is kept in the locking position; When the second locking member disengages from the unlocking member, the unlocking member can move and drive the locking part to switch to the unlocked position.

2. A seat guide sleeve as described in claim 1, characterized in that, The guide sleeve body is provided with a moving space, and the second locking member is movably disposed in the moving space, and the moving direction of the second locking member is parallel to the radial direction of the headrest support rod inserted into the guide sleeve body.

3. A seat guide sleeve as described in claim 2, characterized in that, The movable space is provided with a first elastic member, and the two ends of the first elastic member abut against the inner wall of the movable space and the second locking member, respectively.

4. A seat guide sleeve as described in claim 3, characterized in that, The second locking member includes an annular body and a first fixing part disposed at one end of the body, and the guide sleeve body includes a second fixing part formed on the side wall of the moving space; Both the first fixing part and the second fixing part extend into the first elastic member to limit the first elastic member.

5. A seat guide sleeve as described in claim 1, characterized in that, The unlocking component has an inclined surface, the locking part abuts against the inclined surface, and slides along the inclined surface when the unlocking component moves.

6. A seat guide sleeve as described in claim 1, characterized in that, The unlocking component includes: a pressing part, a first limiting part, a resisting part, and a guiding part; The guide portion extends from the end face of the pressing portion toward the guide sleeve body, and the guide sleeve body is provided with a guide groove, and the guide portion is slidably inserted into the guide groove; The first limiting part is located at the end of the unlocking member away from the pressing part, and the outer side of the guide sleeve body is provided with a second limiting part. The first limiting part abuts against the second limiting part to prevent the unlocking member from detaching from the guide sleeve body in the pulling direction. The abutting part is provided on the pressing part and moves in contact with the second locking member.

7. A seat guide sleeve as described in claim 6, characterized in that, The guide sleeve body is provided with a second elastic element, and the two ends of the second elastic element abut against the pressing part and the guide sleeve body respectively.

8. A seat guide sleeve as described in claim 1, characterized in that, The guide sleeve body is provided with an installation groove, which is connected to the through space; the first locking element is a locking steel wire, which is fixed in the installation groove.

9. A type of seat, characterized in that, Includes a seat guide sleeve as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Including a seat as described in claim 9.

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