Guide sleeve assembly with cap
By introducing a locking element and a sliding snap-fit structure for the cap into the guide sleeve assembly, the problem of cap loosening and falling off is solved, thereby improving the stability and safety of the headrest.
Patent Information
- Application Number
- CN202520398359.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-06
AI Technical Summary
The caps on existing car seat headrest guide covers are prone to loosening or falling off due to vehicle vibration and material fatigue, leading to shaking noises and the risk of the headrest accidentally falling out.
A guide sleeve assembly with a cap was designed. A locking element is slidably connected in the sliding groove. The cap is engaged with the limiting end. Through the cooperation of the sliding strip and the stop strip, a stable clamping structure is formed to prevent loosening.
It effectively prevents the cap from loosening and falling off, improving the stability and safety of the headrest and avoiding problems such as cap unlocking and abnormal noise caused by vibration.
Smart Images
Figure CN223764289U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to guide sleeve assembly technical field especially relates to a guide sleeve assembly with cap. BACKGROUND
[0002] The end cap design of the guide sleeve of the headrest of the automobile seat is the key link influencing the stability and safety of the headrest. The end cap is mostly fixed on the guide sleeve body in the simple buckle or interference fit mode. For example, the cap is connected with the guide sleeve through the clamping block and the clamping groove of the connecting part, but no effective anti-loosening structure is arranged. After long-term use, the gap is easy to be generated at the clamping part due to the vehicle vibration and material fatigue, which leads to the loosening or even falling of the cap. After long-term use, the wear of the convex head and the through hole further increases the gap, which causes the shaking abnormal sound, and even leads to the abnormal unlocking of the button assembly, and increases the risk of the accidental falling of the headrest.
[0003] Therefore, there is still a need for a guide sleeve assembly with a cap to solve the above problems. SUMMARY
[0004] The utility model provides a guide sleeve assembly with cap solves above -mentioned problem.
[0005] The utility model discloses the following technical scheme is adopted to realize the purpose:
[0006] A guide sleeve assembly with a cap, comprising:
[0007] The guide sleeve has opposite limit ends and an extension part, the limit end is arranged at the top end of the extension part and has a sliding groove, and the sliding groove is in communication with the lumen of the extension part;
[0008] The locking member is slidably connected inside the sliding groove and has a blocking part that can block inside the lumen and a pressing part connected with the blocking part, and the locking member is used to lock the relative height of the headrest shaft in the lumen;
[0009] The cap is slidably connected outside the limit end, and after the cap and the limit end are connected, the opening of the cap corresponds to the opening of the sliding groove and covers outside the locking member.
[0010] In one embodiment, sliding strips are formed at the positions of the two side edges of the cap, and stop strips are formed on the cap opposite the opening, the bottom of the limit end is provided with sliding parts matched with the sliding strips, and the outer wall of the limit end has grooves for inserting the stop strips.
[0011] In one embodiment, the sliding part is a multi-section groove formed at the bottom of the limiting end, the sliding part has at least one inflection point, and at least two hooking flanges are arranged at the bottom edge of the opening of the cap for hooking.
[0012] In one embodiment, the bottom of the locking part has a limiting rib, the bottom of the sliding groove has a limiting groove for cooperating with the limiting rib, and the cooperation of the limiting rib and the limiting groove defines the moving track of the locking part.
[0013] In one embodiment, the limiting rib is provided with a protruding part extending into the limiting groove, the protruding part has a blocking surface and a guiding inclined surface, and in the locked state, the blocking surface is in abutment with the side wall of the limiting groove to define the sliding stroke of the locking part inside the sliding groove.
[0014] In one embodiment, the sliding groove is further divided into a connecting groove, and the locking part is connected with an extension part, the extension part is slidingly connected in the connecting groove and elastically abuts against the inner wall of the connecting groove through an elastic part.
[0015] Compared with the prior art, the utility model has at least the following beneficial effects:
[0016] When the cap is assembled, the cap is slidingly connected and hooked at the top position of the limiting end from one side, the direction of the sliding connection is opposite to the pressing direction of the pressing part of the locking part, the cap can be effectively prevented from being loose or falling off due to the relative movement of the headrest, and the cap is in a whole embracing type of clamping mode and is transversely clamped on the guide sleeve, so that the end position of the guide sleeve can be stably clamped and will not be vibrated and disintegrated with the height position adjustment of the headrest. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 is the overall structure schematic diagram of the embodiment of the utility model;
[0018] Figure 2 is the structure explosion of the embodiment of the utility model Figure One ;
[0019] Figure 3 is the structure explosion of the embodiment of the utility model Figure Two ;
[0020] Figure 4 The bottom view structure diagram of the embodiment of the utility model.
[0021] In the figure: 1. Guide sleeve; 11. Limiting end; 111. Sliding groove; 12. Extension; 2. Locking element; 21. Blocking part; 22. Pressing part; 3. Cap; 31. Sliding strip; 32. Stop strip; 33. Sliding part; 34. Groove; 4. Limiting rib; 41. Limiting groove; 42. Protrusion; 51. Extension; 52. Elastic element. Detailed Implementation
[0022] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.
[0023] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.
[0024] Reference Figures 1-4 This utility model provides a guide sleeve 1 assembly with a cap 3, including: guide sleeve 1, locking member 2 and cap 3.
[0025] The guide sleeve 1 has a limiting end 11 and an extension 12. The limiting end 11 is located at the top of the extension 12 and has a sliding groove 111. The sliding groove 111 communicates with the lumen of the extension 12. The extension 12 is, for example, a shaft-like tube structure into which the headrest's insert shaft can be inserted and slide relative to it internally, while the limiting end 11 is connected to one end of the extension 12.
[0026] The locking member 2 is slidably connected inside the sliding groove 111 and has a blocking part 21 that can block inside the cavity, and a pressing part 22 connected to the blocking part 21. The locking member 2 is used to lock the relative height of the headrest insert shaft inside the cavity. The locking member 2 can be slidably connected inside the sliding groove 111, and the blocking part 21 will intercept inside the cavity. When the headrest insert shaft moves inside the cavity, it can be stably engaged by the locking member 2 and the slot on the insert shaft, thereby stably holding the relative height of the headrest.
[0027] The cap 3 is slidably engaged with the outside of the limiting end 11. After the cap 3 and the limiting end 11 are connected, the opening of the cap 3 corresponds to the opening of the sliding groove 111 and covers the outside of the locking member 2. The structure of the cap 3 can effectively cover the bottom locking member 2 and prevent external impacts from affecting the normal opening and closing of the locking member 2, providing stable support for the smooth operation of the locking member 2.
[0028] In one embodiment, sliding strips 31 are formed at both sides of the cap 3, and stop strips 32 are formed on the cap 3 opposite to the opening. The bottom of the limiting end 11 has a sliding part 33 that cooperates with the sliding strips 31, and the outer wall of the limiting end 11 has a groove 34 for the stop strips 32 to be inserted. The cap 3 is circular in shape. When inserted, the opening faces one side of the limiting end 11, and then it slides in. The opening occupies less than 1 / 4 of the entire circular outline of the cap 3, so that the opening of the cap 3 is connected to the limiting end 11 in a snap-fit state, which can stably fit and prevent it from falling off.
[0029] In one embodiment, the sliding part 33 is a multi-segmented groove formed at the bottom of the limiting end 11. The sliding part 33 has at least one inflection point and at least two hooking recesses near the opening for hooking the bottom edge of the opening of the cap 3. During connection, the inner side of the opening edge will slide along the contour of the multi-segmented groove and gradually deform elastically. When inserted halfway, it passes the inflection point, and the opening of the cap 3 gradually contracts, eventually locking in the final position. Even if the cap 3 is subjected to a force in the disassembly direction during operation, it will have difficulty passing the inflection point and will eventually detach smoothly. This improves the installation reliability of the cap 3.
[0030] In one embodiment, the bottom of the locking member 2 has a limiting rib 4, and the bottom of the sliding groove 111 has a limiting groove 41 for cooperating with the limiting rib 4. The limiting rib 4 and the limiting groove 41 cooperate to define the movement trajectory of the locking member 2. The bottom limiting rib 4 of the locking member 2 can improve the smoothness of the adjustment of the locking member 2 during movement and prevent the locking member 2 from shaking in a non-preset direction.
[0031] In one embodiment, a protrusion 42 is formed on the limiting rib 4, extending into the limiting groove 41. The protrusion 42 has a blocking surface and a guiding slope. In the locked state, the blocking surface abuts against the side wall of the limiting groove 41, thereby limiting the sliding stroke of the locking member 2 within the sliding groove 111. The stable engagement of the protrusion 42 with the limiting groove 41 effectively limits the movement trajectory and stroke of the locking member 2, preventing the locking member 2 from dislodging during operation.
[0032] In one embodiment, the sliding groove 111 is further divided into a connecting groove, and the locking member 2 is connected to both sides with an extension 51. The extension 51 is slidably connected in the connecting groove and elastically abuts against the inner wall of the connecting groove by an elastic member 52. The cooperation between the connecting groove and the extension 51 can effectively prevent the locking member 2 from falling out of the sliding groove 111 after installation, thus improving the stability of the button.
[0033] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.
Claims
1. A guide sleeve assembly with a cap, characterized in that The utility model relates to a headrest locking device, comprising: a guide sleeve having opposite limiting ends and an extension, the limiting end is arranged at the top end of the extension and has a sliding groove, the sliding groove and the lumen of the extension are communicated; a locking member is slidably connected inside the sliding groove, and has a blocking part that can be blocked inside the lumen and a pressing part connected with the blocking part, the locking member is used for locking the relative height of the headrest inserting shaft in the lumen; a cap is slidably connected outside the limiting end, after the cap and the limiting end are connected, the opening of the cap and the opening of the sliding groove correspond, and the cap covers the outside of the locking member.
2. The bushing assembly of claim 1, wherein, Sliding strips are formed at the position of the two side edges of the cap, and a stop strip is formed on the cap opposite to the opening, the bottom of the limiting end is provided with sliding parts matched with the sliding strips, and the outer wall of the limiting end has a groove for inserting the stop strip.
3. The bushing assembly of claim 2, wherein, The sliding part is a multi-section groove formed at the bottom of the limiting end, the sliding part has at least one inflection point, and at least two hanging flanges are arranged at the position close to the opening for hanging the bottom edge of the opening of the cap.
4. The bushing assembly of claim 1, wherein, The bottom of the locking member has a limiting rib, the bottom of the sliding groove has a limiting groove matched with the limiting rib, and the limiting rib and the limiting groove define the moving track of the locking member.
5. The bushing assembly of claim 4, wherein, The limiting rib is provided with a protruding part extending into the limiting groove, the protruding part has a blocking surface and a guide inclined surface, in the locking state, the blocking surface is butted against the side wall of the limiting groove for limiting the sliding stroke of the locking member in the sliding groove.
6. The bushing assembly of claim 5, wherein, The sliding groove is further divided into a connecting groove, the locking member is connected with an extension on both sides, the extension is slidably connected in the connecting groove and elastically abuts against the inner wall of the connecting groove through an elastic member.