A portable linkage headrest guide sleeve and automobile seat

Abstract

The utility model belongs to headrest guide sleeve field provides a kind of portable linkage headrest guide sleeve and car seat, it includes: the guide sleeve assembly for connecting headrest support rod;Sliding unlocking portion and driven portion, it is movably arranged on guide sleeve assembly, sliding unlocking portion and driven portion can be moved along the radial direction of headrest support rod, to realize the synchronous unlocking and locking of two headrest support rods;Driven portion movably connects in sliding unlocking portion, and it is formed with connecting gap, to provide the space of driven portion relative sliding unlocking portion movement.Compared with prior art, the utility model has the advantages that by setting connecting gap and double elastic piece structure, ensure that driven portion can follow sliding unlocking portion synchronous action in reset process, and can independently complete final clamping action, to guarantee the stable locking function of headrest support rod, overall structure is simple, convenient and fast operation, reduce sliding unlocking portion and driven portion manufacturing precision, also effectively guarantee the stability in the use process of headrest.

Description

Technical Field

[0001] This utility model belongs to the field of headrest guide sleeves, specifically relating to a convenient linkage headrest guide sleeve and a car seat. Background Technology

[0002] Car headrests are both a driving comfort feature and a safety protection device. In a rear-end collision, the body is thrown backward due to inertia. The pressure from the vehicle's acceleration and deceleration is concentrated on the vulnerable neck and head, and the headrest acts as a buffer, protecting the head. Besides enhancing driving safety, car headrests also serve as decorative elements and seat accessories. In floods, when car windows are difficult to open due to water pressure, car headrests can be used to break the glass. Clearly, car seat headrests play a vital role in protecting occupants.

[0003] Currently, most commercially available seat headrests typically use two vertically arranged support rods connected to the seat frame, and the headrest height is adjusted via a locking mechanism located within a guide sleeve. For example, Chinese patent CN119408469A discloses a guide sleeve assembly for connecting headrest rods and a sliding unlocking part connecting the two guide sleeve assemblies. The guide sleeve assembly includes a guide sleeve body, with a button, spring, and cover connected to the upper part. The sliding unlocking part includes an unlocking piece connected to the button and a slide rod connecting the two unlocking pieces. This structure uses a one-piece molded unlocking piece and slide rod to achieve the unlocking and locking actions of the two headrest support rods. This not only increases the overall manufacturing difficulty but also requires relatively high manufacturing precision for the slide rod and its two unlocking pieces. If manufacturing errors occur, even if one unlocking piece is in place, the other unlocking piece may not be in place accurately, affecting the locking function of the headrest support rod and ultimately causing the headrest to wobble during use, impacting the user's overall experience. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a convenient linkage headrest guide sleeve and car seat that features a simple structure, good stability, and ensures accurate locking of both headrest support rods.

[0005] The purpose of this utility model can be achieved through the following technical solution: a convenient linkage headrest guide sleeve is proposed, including: a guide sleeve assembly for connecting the headrest support rod;

[0006] The sliding unlocking part and the driven part are movably disposed on the guide sleeve assembly. Both the sliding unlocking part and the driven part can move along the radial direction of the headrest support rod to realize the synchronous unlocking and locking of the two headrest support rods. The driven part is movably connected to the sliding unlocking part and forms a connection gap with it to provide space for the driven part to move relative to the sliding unlocking part.

[0007] A first elastic element and a second elastic element are disposed on the guide sleeve assembly. The first elastic element is connected to the sliding unlocking part, and the second elastic element is connected to the driven part.

[0008] When the sliding unlocking part and the driven part move relative to the guide sleeve assembly, they are used to unlock the headrest support rod;

[0009] The driven part can move relative to the guide sleeve assembly with the sliding unlocking part due to the elastic reset of the first elastic element, and move relative to the sliding unlocking part due to the elastic reset of the second elastic element, so that the driven part can be moved and locked into the headrest support rod.

[0010] In the aforementioned convenient linkage headrest guide sleeve, a T-shaped block is formed at the end of the sliding unlocking part, and a concave groove is formed at the end of the driven part. The T-shaped block is movably engaged in the concave groove and forms the connection gap with the concave groove.

[0011] In the aforementioned convenient linkage headrest guide sleeve, both the sliding unlocking part and the driven part are provided with a clearance groove and a locking block, and the headrest support rod moves through the clearance groove; the locking block is located on one side of the clearance groove and is used to be moved and locked into the headrest support rod.

[0012] In the aforementioned convenient linkage headrest guide sleeve, the guide sleeve assembly includes:

[0013] The guide sleeve body has the headrest support rod disposed within it. The guide sleeve body has a mounting plate formed along its radial direction. The sliding unlocking part and the driven part are both movably disposed on the mounting plate.

[0014] A connecting plate and a cover are provided. The connecting plate is disposed on the mounting plate, and the cover is detachably connected to the connecting plate and covers the sliding unlocking part and the driven part. The cover has a through hole for the headrest support rod to pass through.

[0015] In the aforementioned convenient linkage headrest guide sleeve, the connection gap includes an unlocking gap and a reset gap that are interconnected.

[0016] In the aforementioned convenient linkage headrest guide sleeve, an unlocking button is formed at the end of the sliding unlocking part away from the T-shaped block, and a limit groove is provided on the guide cover, with the unlocking button movably disposed within the limit groove.

[0017] In the aforementioned convenient linkage headrest guide sleeve, the mounting plate is provided with an anti-detachment block, which together with the mounting plate forms a guide cavity, which is used to restrict the movement direction of the sliding unlocking part and the driven part.

[0018] In the aforementioned convenient linkage headrest guide sleeve, a guide groove is provided on the mounting plate, and a connecting post is formed on the bottom wall of both the sliding unlocking part and the driven part. One end of the first elastic member or the second elastic member is connected to the inner wall of the guide groove, and the other end is connected to the connecting post.

[0019] In the aforementioned convenient linkage headrest guide sleeve, the connecting plate is provided with several buckle slots, and the cover is provided with several buckle blocks, the buckle blocks being movably engaged in the buckle slots.

[0020] The technical solution adopted by this utility model to solve its technical problem is to also propose an automobile seat, including a convenient linkage headrest guide sleeve as described above, and also including a connecting patch and a wiring harness. The guide sleeve assembly is provided with an assembly post, and the connecting patch is sleeved on the assembly post and hot-melt welded to the guide sleeve assembly; one end of the wiring harness is connected to the connecting patch, and the other end is connected to a connector.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) This utility model provides a convenient linkage headrest guide sleeve and car seat. By setting a connection gap and a double elastic element structure, it ensures that the driven part can move synchronously with the sliding unlocking part during the reset process, and can also independently complete the final locking action, thereby ensuring the stable locking function of the headrest support rod. The overall structure is simple, the operation is convenient and quick, and while reducing the processing and manufacturing precision of the sliding unlocking part and the driven part, it also effectively ensures the stability of the headrest during use.

[0023] (2) The detachable cover provides convenience for the disassembly and maintenance of the components on the connecting plate. At the same time, the limit groove can guide and limit the unlocking button, avoiding the long empty stroke of the sliding unlocking part and the driven part during the reset process, which affects the response speed of locking the headrest support rod.

[0024] (3) The guide groove and connecting column can not only realize the installation of the double elastic component structure, but also guide the reset movement direction of the sliding unlocking part and the driven part, thus improving the smoothness and stability of the unlocking and locking process of the headrest support rod. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is an exploded view of the sliding unlocking part and the driven part between the cover and the mounting plate;

[0027] Figure 3 This is a schematic diagram of the installation structure of the mounting plate and connecting plate;

[0028] Figure 4 This is a bottom view of the sliding unlocking part and the driven part;

[0029] Figure 5 This is a schematic diagram of the mounting structure of the connecting patch and wire harness on the conductor body.

[0030] In the diagram, 1. Guide sleeve assembly; 10. Guide sleeve body; 100. Assembly post; 11. Mounting plate; 110. Anti-detachment block; 110a. Limiting hole; 111. Guide cavity; 112. Guide groove; 12. Connecting plate; 120. Snap-on groove; 13. Cover; 130. Through hole; 131. Limiting groove; 132. Snap-on block; 2. Sliding unlocking part; 20. T-block; 21. Unlocking button; 3. Driven part; 30. Concave groove; 31. Limiting block; 40. Connection gap; 400. Unlocking gap; 401. Reset gap; 41. Clearance groove; 42. Locking block; 43. Connecting post; 5. First elastic element; 6. Second elastic element; 7. Connecting patch; 8. Wire harness; 80. Connector. Detailed Implementation

[0031] 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.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention 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 indication will also change accordingly.

[0033] Example 1:

[0034] like Figures 1 to 4 As shown, this utility model provides a convenient linkage headrest guide sleeve, which includes a guide sleeve assembly 1, a sliding unlocking part 2, a driven part 3, a first elastic element 5, and a second elastic element 6.

[0035] Specifically, in this embodiment, the guide sleeve assembly 1 is used to connect the headrest support rod; the sliding unlocking part 2 and the driven part 3 are movably disposed on the guide sleeve assembly 1, wherein both the sliding unlocking part 2 and the driven part 3 can move along the radial direction of the headrest support rod to achieve synchronous unlocking and locking of the two headrest support rods; the driven part 3 is movably connected to the sliding unlocking part 2 and forms a connection gap 40 with it to provide space for the driven part 3 to move relative to the sliding unlocking part 2; the first elastic member 5 and the second elastic member 6 are disposed on the guide sleeve assembly 1, the first elastic member 5 is connected to the sliding unlocking part 2; the second elastic member 6 is connected to the driven part 3; when the sliding unlocking part 2 and the driven part 3 move relative to the guide sleeve assembly 1, they are used to unlock the headrest support rod; the driven part 3 can move relative to the guide sleeve assembly 1 with the sliding unlocking part 2 due to the elastic reset of the first elastic member 5, and move relative to the sliding unlocking part 2 due to the elastic reset of the second elastic member 6, so that the driven part 3 is movably locked into the headrest support rod.

[0036] When the headrest is locked, the sliding unlocking part 2 and the driven part 3 in this embodiment are provided with restoring force by the first elastic member 5 and the second elastic member 6, respectively, to ensure the locking function of their respective headrest support rods is completed. That is, at this time, the sliding unlocking part 2 and the driven part 3 are respectively engaged in the locking grooves (not shown in the figure) on the two headrest support rods to lock the headrest and ensure that the headrest will not be displaced along the axis of the headrest support rods during use. As the user presses the sliding unlocking part 2, since the driven part 3 is connected to the sliding unlocking part 2, the sliding unlocking part 2 moves along the axis of the headrest support rods. Figure 2 During the unlocking process by moving to the right, the first elastic element 5 is gradually compressed, pushing the driven part 3 along... Figure 2 Moving to the right gradually compresses the second elastic element 6, until both the sliding unlocking part 2 and the driven part 3 disengage from the locking groove of the headrest support rod, the seat headrest can be adjusted to the desired height position according to the user's needs. During the resetting and locking process, the user can release the sliding unlocking part 2, at which point the elastic potential energy of the first elastic element 5 drives the sliding unlocking part 2 along... Figure 2 Moving to the left, during this process, the sliding unlocking part 2 pulls the driven part 3 to move synchronously. Once the sliding unlocking part 2 is re-engaged into the corresponding headrest support rod, the driven part 3, with the help of the connecting gap 40 and the action of the second elastic element 6, further fine-tunes its position relative to the sliding unlocking part 2 until the driven part 3 also precisely engages in the locking groove of the other headrest support rod, completing the synchronous locking on both sides. Therefore, this structure utilizes the synergistic effect of the connecting gap 40 and the double elastic elements to ensure that the driven part 3 can both move synchronously with the sliding unlocking part 2 during the reset process and independently complete the final engagement action. The overall structure is simple, effectively reducing the manufacturing precision requirements of the driven part 3 and the sliding unlocking part 2, while also ensuring a stable locking function for the headrest support rod, providing a guarantee of stability for users when using the car headrest.

[0037] A T-shaped block 20 is formed at the end of the sliding unlocking part 2, and a concave groove 30 is formed at the end of the driven part 3. The T-shaped block 20 is movably engaged in the concave groove 30 and forms a connection gap 40 with the concave groove.

[0038] like Figure 2 and Figure 4 As shown, in this embodiment, the connection between the sliding unlocking part 2 and the driven part 3 is achieved by the snap-fit ​​between the T-shaped block 20 and the concave groove 30. That is, during the unlocking or locking process, the T-shaped block 20 can drive the driven part 3 to complete the unlocking or locking function of the headrest support rod by pressing against the inner wall of the concave groove 30. At the same time, the fit of this structure provides good guidance and limiting effect, ensuring that the linkage components do not shift or jam during operation. Moreover, the overall structure is easy and quick to install and operate, which greatly facilitates subsequent maintenance and replacement.

[0039] Preferably, continue to refer to Figure 2 and Figure 4 As shown in the structure, the connection gap 40 in this embodiment includes an unlocking gap 400 and a reset gap 401 that are interconnected. Specifically, during the unlocking process, the sliding unlocking part 2 pushes the driven part 3 synchronously along... Figure 2 Move to the right, at which point the unlocking gap 400 is at its maximum and the reset gap 401 is at its minimum (i.e., the unlocking part and the driven part 3 are in a tight position), so that it can disengage from the headrest support rod during the movement to complete the required unlocking function. After the headrest height adjustment is completed, the first elastic member 5 drives the sliding unlocking part 2 along... Figure 2 (or Figure 4 When the sliding unlocking part 2 moves to the left, the reset gap 401 gradually increases, while the unlocking gap 400 gradually decreases (until the T-block 20 abuts against the inner wall of the concave groove 30). As the sliding unlocking part 2 is engaged in the headrest support rod, due to the presence of the reset gap 401, under the elastic reset action of the second elastic element 6, the driven part 3 can be further applied relative to the sliding unlocking part 2 along the actual situation. Figure 2 (or Figure 4 The leftward resetting force ensures that the driven part 3 can accurately lock into the other headrest support rod to complete the locking function. This effectively avoids the situation where the driven part 3 and the sliding unlocking part 2 cannot be locked in place due to manufacturing precision errors during the one-piece molding process. This ensures the stability of the headrest during use and improves the user experience.

[0040] Both the sliding unlocking part 2 and the driven part 3 are provided with a clearance groove 41 and a locking block 42. The headrest support rod moves through the clearance groove 41. The locking block 42 is located on one side of the clearance groove 41 and is used to be moved and locked into the headrest support rod.

[0041] like Figure 4As shown, the clearance groove 41 in this embodiment is used to accommodate the headrest support rod passing through, preventing deviation or jamming during operation. The locking block 42 is located on one side of the clearance groove 41 and can extend into or retract into the locking groove on the headrest support rod under the action of the first / second elastic member 6. While realizing the locking or unlocking function, it also effectively prevents the headrest from loosening during use. The overall structure is easy to assemble and maintain, reduces production costs, and improves locking accuracy.

[0042] The guide sleeve assembly 1 includes: a guide sleeve body 10, a headrest support rod disposed inside the guide sleeve body 10, a mounting plate 11 formed in the radial direction of the guide sleeve body 10, a sliding unlocking part 2 and a driven part 3 both movably disposed on the mounting plate 11; a connecting plate 12 and a cover 13, the connecting plate 12 being disposed on the mounting plate 11, the cover 13 being detachably connected to the connecting plate 12 and covering the sliding unlocking part 2 and the driven part 3, and a through hole 130 for the headrest support rod to pass through on the cover 13.

[0043] like Figures 1 to 3 As shown, the guide sleeve assembly 1 in this embodiment consists of three parts: guide sleeve body 10, connecting plate 12, and cover 13. During assembly, the guide sleeve body 10 and mounting plate 11 are arranged in a mountain shape. As the mounting plate 11 passes through the middle of the connecting plate 12, the sliding unlocking part 2 and the driven part 3 can be assembled into the mounting plate 11. The cover 13 is then connected to the connecting plate 12 by screws, bolts, etc., which effectively protects the internal mechanism from dust and foreign matter interference and extends its service life.

[0044] An unlocking button 21 is formed at the end of the sliding unlocking part 2 away from the T-shaped block 20. A limit groove 131 is provided on the cover 13, and the unlocking button 21 is movably disposed in the limit groove 131.

[0045] Furthermore, such as Figures 1 to 3 As shown, in this embodiment, the unlock button 21 provides a clear operating stroke and reset feedback through the limiting groove 131. Users can easily identify whether they are currently in the unlocked state. Without affecting the overall aesthetics, the limiting groove 131 effectively constrains the movement range of the unlock button 21, ensuring that the unlock button 21 slides smoothly within the limiting groove 131, while also preventing accidental unlocking due to collisions or accidental touches.

[0046] The mounting plate 11 is provided with an anti-detachment block 110. The anti-detachment block 110 and the mounting plate 11 together form a guide cavity 111, which is used to restrict the movement direction of the sliding unlocking part 2 and the driven part 3.

[0047] like Figures 2 to 4As shown, the opening direction of the guide cavity 111 formed between the anti-detachment block 110 and the mounting plate 11 is exactly consistent with the direction of unlocking or locking of the sliding unlocking part 2 and the driven part 3. During the assembly process, the guide cavity 111 is used to limit and prevent the sliding unlocking part 2 and the driven part 3 from detaching, and can also guide the movement of the two during unlocking or locking, ensuring smooth operation without deviation and improving the safety and stability of the overall structure.

[0048] Preferably, such as Figure 2 and Figure 3 As shown, in this embodiment, a limiting block 31 is provided on the top wall of the driven part 3, and a limiting hole 110a is provided on the anti-detachment block 110. The limiting block 31 extends into the limiting hole 110a, which further guides and limits the reciprocating movement of the driven part 3, and avoids the driven part 3 from getting stuck with the sliding unlocking part 2 due to tilting.

[0049] The mounting plate 11 has a guide groove 112. The bottom walls of the sliding unlocking part 2 and the driven part 3 are both formed with connecting posts 43. One end of the first elastic member 5 or the second elastic member 6 is connected to the inner wall of the guide groove 112, and the other end is connected to the connecting post 43.

[0050] like Figures 2 to 4 As shown, during installation, the first / second elastic member 6 is pre-installed on the connecting post 43. As the sliding unlocking part 2 and the driven part 3 are placed in the mounting plate 11, the connecting post 43, together with the elastic member, extends into the guide groove 112. At the same time, the other end of the first / second elastic member 6 abuts against the inner wall of the guide groove 112. The guide groove 112 guides and limits the extension and retraction path of the first / second elastic member 6, ensuring that the sliding unlocking part 2 and the driven part 3 apply a reset force parallel to the opening direction of the guide cavity 111 during the reset process, thus improving the smoothness and accuracy of locking.

[0051] More preferably, such as Figure 2 As shown, the connecting plate 12 has several latching slots 120, and the cover 13 has several latching blocks 132, which are movably engaged in the latching slots 120. This structure enables quick assembly and disassembly between the cover 13 and the connecting plate 12, facilitating the timely removal and replacement of the sliding unlocking part 2 and the driven part 3 in case of damage, thus helping to extend the service life of the headrest guide sleeve.

[0052] Example 2:

[0053] like Figure 5As shown, this second embodiment provides a car seat. The convenient linkage headrest guide sleeve in the first embodiment can be applied to a car seat. This car seat also includes a connecting patch 7 and a wiring harness 8. An assembly post 100 is provided on the guide sleeve assembly 1. The connecting patch 7 is fitted onto the assembly post 100 and heat-welded onto the guide sleeve assembly 1, simplifying the assembly process and effectively preventing poor contact caused by vibration and temperature changes. One end of the wiring harness 8 is connected to the connecting patch 7, and the other end is connected to a connector 80. Therefore, the reasonable layout of the wiring harness 8 and the connector 80 ensures uninterrupted electrical function during headrest adjustment, improves comfort, and meets the intelligent and electric functional requirements of modern car seats.

[0054] It should be noted that in this invention, 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 that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. 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 specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If 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 the present invention.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A convenient linkage headrest guide sleeve, characterized in that, include: Guide sleeve assembly for connecting headrest support rod; The sliding unlocking part and the driven part are movably disposed on the guide sleeve assembly. Both the sliding unlocking part and the driven part can move along the radial direction of the headrest support rod to realize the synchronous unlocking and locking of the two headrest support rods. The driven part is movably connected to the sliding unlocking part and forms a connection gap with it to provide space for the driven part to move relative to the sliding unlocking part. A first elastic element and a second elastic element are disposed on the guide sleeve assembly. The first elastic element is connected to the sliding unlocking part; the second elastic element is connected to the driven part. When the sliding unlocking part and the driven part move relative to the guide sleeve assembly, they are used to unlock the headrest support rod; The driven part can move relative to the guide sleeve assembly with the sliding unlocking part due to the elastic reset of the first elastic element, and move relative to the sliding unlocking part due to the elastic reset of the second elastic element, so that the driven part can be moved and locked into the headrest support rod.

2. The convenient linkage headrest guide sleeve according to claim 1, characterized in that, The end of the sliding unlocking part has a T-shaped block, and the end of the driven part has a concave groove. The T-shaped block is movably engaged in the concave groove and forms the connection gap with the concave groove.

3. The convenient linkage headrest guide sleeve according to claim 1, characterized in that, Both the sliding unlocking part and the driven part are provided with a clearance groove and a locking block. The headrest support rod moves through the clearance groove. The locking block is located on one side of the clearance groove and is used to be moved and locked into the headrest support rod.

4. A convenient linkage headrest guide sleeve according to claim 2, characterized in that, The guide sleeve assembly includes: The guide sleeve body has the headrest support rod disposed within it. The guide sleeve body has a mounting plate formed along its radial direction. The sliding unlocking part and the driven part are both movably disposed on the mounting plate. A connecting plate and a cover are provided. The connecting plate is disposed on the mounting plate, and the cover is detachably connected to the connecting plate and covers the sliding unlocking part and the driven part. The cover has a through hole for the headrest support rod to pass through.

5. A convenient linkage headrest guide sleeve according to claim 1 or 2, characterized in that, The connection gap includes an unlocking gap and a reset gap that are interconnected.

6. A convenient linkage headrest guide sleeve according to claim 4, characterized in that, An unlocking button is formed at the end of the sliding unlocking part away from the T-shaped block, and a limit groove is provided on the cover, with the unlocking button movably disposed within the limit groove.

7. A convenient linkage headrest guide sleeve according to claim 4, characterized in that, The mounting plate is provided with an anti-detachment block, which together with the mounting plate forms a guide cavity. The guide cavity is used to restrict the movement direction of the sliding unlocking part and the driven part.

8. A convenient linkage headrest guide sleeve according to claim 4, characterized in that, The mounting plate has a guide groove, and the bottom walls of the sliding unlocking part and the driven part are both formed with connecting posts. One end of the first elastic member or the second elastic member is connected to the inner wall of the guide groove, and the other end is connected to the connecting post.

9. A convenient linkage headrest guide sleeve according to claim 4, characterized in that, The connecting plate has several buckle slots, and the cover has several buckle blocks, which are movably engaged in the buckle slots.

10. A car seat, characterized in that, The present invention includes a convenient linkage headrest guide sleeve as described in any one of claims 1-9, and further includes a connecting patch and a wire harness. The guide sleeve assembly is provided with an assembly post, the connecting patch is sleeved on the assembly post and hot-melt welded to the guide sleeve assembly; one end of the wire harness is connected to the connecting patch, and the other end is connected to a plug.

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