High-precision guiding springback type guide sleeve

Abstract

The utility model discloses a high-precision guiding springback type guide sleeve which comprises a guide sleeve and a locking piece, the guide sleeve is provided with a limiting end and an extension portion which are opposite, the limiting end is arranged at the top end of the extension portion and provided with a sliding groove, the sliding groove is communicated with a pipe cavity of the extension portion, the locking piece is connected inside the sliding groove in a sliding mode, and the locking piece is connected with the limiting end in a sliding mode. The blocking part can be blocked in the pipe cavity, the pressing part is connected with the blocking part, and the locking piece is used for locking the relative height of the headrest inserting shaft in the pipe cavity. The bottom of the locking piece is provided with a limiting rib, the bottom of the sliding groove is provided with a limiting groove used for being matched with the limiting rib, and the limiting rib and the limiting groove are matched to define the moving track of the locking piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to guiding rebound formula guide sleeve technical field especially relates to a high accuracy guiding rebound formula guide sleeve. 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. In the design of the button assembly of the unlocking headrest, the external force receiving part (such as a convex head) needs to pass through the through hole on the cover to realize the pressing operation. In the traditional scheme, if the size tolerance of the through hole is not well controlled or the centring property of the convex head and the through hole is insufficient, the frictional resistance will increase when pressing, and the operation will not be smooth. After long-term use, the wear of the convex head and the through hole will further increase the gap, causing shaking abnormal noise, and even leading to abnormal unlocking of the button assembly, increasing the risk of accidental disengagement of the headrest.

[0003] Therefore, there is still a need for a high-precision guiding rebound guide sleeve to solve the above problems. SUMMARY

[0004] The utility model provides a high accuracy guiding rebound formula guide sleeve that solves the above problems.

[0005] The utility model discloses a high accuracy guiding rebound formula guide sleeve that solves the above problems.

[0006] A high-precision guiding rebound guide sleeve, comprising:

[0007] The guide sleeve has opposite limiting ends and an extension portion, the limiting end is arranged at the top end of the extension portion and has a sliding groove, and the sliding groove is in communication with the lumen of the extension portion;

[0008] The locking member is slidably connected inside the sliding groove and has a blocking portion that can be blocked inside the lumen and a pressing portion connected with the blocking portion, and the locking member is used to lock the relative height of the headrest shaft in the lumen;

[0009] The bottom of the locking member has a limiting rib, the bottom of the sliding groove has a limiting groove for cooperating with the limiting rib, and the limiting rib and the limiting groove cooperate to define the movement track of the locking member.

[0010] In one embodiment, a protruding portion is formed on the limiting rib, the protruding portion protrudes in the limiting groove, the protruding portion has a blocking surface and a guide 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 member inside the sliding groove.

[0011] In one embodiment, the sliding groove is further divided into a connecting groove, and the locking member has two extension portions connected on both sides, the extension portions are slidably connected in the connecting groove, and the extension portions are elastically abutted against the inner wall of the connecting groove through the elastic member.

[0012] In one embodiment, the pressing portion outer circumferential surface of the locking member and the outer side surface arc radius of the limiting end of the locking member are the same.

[0013] In one embodiment, a clamping groove for clamping the blocking portion is formed on the locking member, and the clamping groove clamps two ends of the blocking portion respectively.

[0014] Compared with the prior art, the beneficial effects of the utility model at least include:

[0015] The limiting rib formed at the bottom of the locking member can improve the overall strength of the locking member to a certain extent, avoid damage to the overall structure of the locking member during use, and additionally, the limiting rib at the bottom of the locking member can cooperate with the limiting groove to limit the stable sliding track and stroke of the locking member in the sliding groove, avoid damage to the locking member due to excessive force of the user, or cause the locking member to fall off due to vibration of the vehicle, and improve the smoothness of the locking member and the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure schematic diagram of the guide sleeve with an end cover of the embodiment of the utility model;

[0017] Figure 2 is the top view structure schematic diagram of the embodiment of the utility model;

[0018] Figure 3 is the guide sleeve structure explosion of the embodiment of the utility model Figure 1 ;

[0019] Figure 4 is the guide sleeve structure explosion of the embodiment of the utility model Figure 2 ;

[0020] Figure 5 is the structure schematic diagram of the part of the top material of the embodiment of the utility model.

[0021] In the figure: 1, guide sleeve; 11, limiting end; 111, sliding groove; 12, extension; 2, locking member; 21, blocking portion; 22, pressing portion; 3, limiting rib; 31, protruding portion; 4, limiting groove; 7, clamping groove; 8, elastic member. DETAILED DESCRIPTION

[0022] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will not be repeated.

[0023] The words expressing position and direction described in the utility model are all illustrated by taking the drawings as examples, but can also be changed according to needs, and the changes made are all included in the protection scope of the utility model.

[0024] Referring to Figures 1-5 The utility model provides a kind of high-precision guiding rebound type guide sleeve 1, comprising: guide sleeve 1, locking piece 2.

[0025] The guide sleeve 1 has opposite limit end 11 and extension 12, the limit end 11 is arranged at the top end of the extension 12 and has sliding groove 111, the sliding groove 111 is communicated with the lumen of the extension 12. Wherein the extension 12 is for example shaft-like tube structure, the shaft of headrest can be inserted, and relatively slides inside, and the limit end 11 is connected at one end of the extension 12. The locking piece 2 is slidably connected inside the sliding groove 111, and has blocking portion 21 that can be blocked inside the lumen, and pressing portion 22 connected with blocking portion 21, locking piece 2 is used to lock the relative height of headrest shaft in the lumen. The bottom of the locking piece 2 has limit rib 3, the bottom of the sliding groove 111 has limit groove 4 for cooperating with limit rib 3, the limit rib 3 and limit groove 4 cooperate to define the moving track of the locking piece 2.

[0026] Wherein the locking piece 2 can be slidably connected inside the sliding groove 111, and the blocking portion 21 is intercepted inside the lumen, when the headrest shaft in the lumen moves, it is hung by locking piece 2 and the clamping groove 7 on the shaft, so that the relative height of the headrest can be stably hung. Wherein the limit rib 3 formed at the bottom of the locking piece 2 is integrally formed, when external force is generated, the overall structural strength can be improved, and the pressing moving track of the locking piece 2 can also be accurately limited by cooperating with the sliding groove 111, to provide smooth operation experience.

[0027] In one embodiment, the limit rib 3 is formed with protruding portion 31, the protruding portion 31 protrudes in the limit groove 4, the protruding portion 31 has blocking surface and guide inclined surface, in the locking state, the blocking surface and the side wall of the limit groove 4 are butt jointed, for limiting the sliding stroke of the locking piece 2 inside the sliding groove 111. Wherein the structure of the protruding portion 31 is that one side is provided with inclined surface, and the other side is provided with vertical surface, the guide inclined surface can be clamped into the limit groove 4 by sliding at an inclined angle during installation, and then the blocking surface of the other side will be in abutment with the side wall of the limit groove 4, to avoid the locking piece 2 from falling off in normal use, to provide good protection for the user to use stably and smoothly, and avoid falling off.

[0028] In one embodiment, the sliding groove 111 is further divided into a connecting groove, and the locking piece 2 is connected with an extension part on both sides, the extension part is slidingly connected in the connecting groove, and is elastically abutted against the inner wall of the connecting groove through the elastic piece 8. Wherein the extension part in the connecting groove, the connecting effect of the extension part and the spring can provide a reverse elastic force in the process of force, and quickly rebound the pressed locking piece 2 in time. Avoid the problem of structural disintegration of the vehicle when driving fast.

[0029] In one embodiment, the outer peripheral surface of the pressing part 22 of the locking piece 2 and the outer side surface of the limiting end 11 of the locking piece 2 have the same radius of curvature. Wherein the pressing part 22 of the locking piece 2, the outer peripheral surface of the pressing part 22 and the outer edge of the limiting end 11 can be smoothly connected, which can improve the user's hand feeling during work.

[0030] In one embodiment, the locking piece 2 is provided with a clamping groove 7 for clamping the blocking part 21, and the clamping groove 7 clamps both ends of the blocking part 21 respectively. The locking piece 2 is clamped in the clamping groove 7 in the form of a shaft hole during installation, which is convenient for installation and disassembly, improves the utilization rate of consumables, and the two ends of the inserted blocking part 21 are abutted against the inside of the sliding groove 111 and cannot fall off and disintegrate.

[0031] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model, all these changes should belong to the protection scope of the utility model claim.

Claims

1. A high-precision guide and rebound guide bushing, characterized by, The utility model relates to a headrest locking device for vehicle, which comprises: a guide sleeve having opposite limiting ends and an extension part, the limiting end is arranged at the top end of the extension part and has a sliding groove, the sliding groove is communicated with the lumen of the extension part; a locking member is slidingly connected inside the sliding groove and has a blocking part which 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 inside the lumen; the bottom of the locking member has a limiting rib, the bottom of the sliding groove has a limiting groove used for cooperating with the limiting rib, the cooperation of the limiting rib and the limiting groove defines the moving track of the locking member.

2. The high-precision guide spring guide sleeve according to claim 1, characterized in that a convex part is formed on the limiting rib, the convex part protrudes inside the limiting groove, the convex part has a blocking surface and a guide inclined surface, in the locking state, the blocking surface is butted with the side wall of the limiting groove, which is used for limiting the sliding stroke of the locking member inside the sliding groove.

3. The high-precision guide spring guide sleeve according to claim 2, characterized in that a connecting groove is further divided inside the sliding groove, the locking member is connected with extension parts on both sides, the extension parts are slidingly connected inside the connecting groove and elastically abut against the inner wall of the connecting groove through elastic members.

4. The high-precision guide spring guide sleeve according to claim 1, characterized in that the outer peripheral surface of the pressing part of the locking member and the outer surface of the limiting end of the locking member have the same radius of curvature.

5. The high-precision guide spring guide sleeve according to claim 1, characterized in that a clamping groove is arranged on the locking member and used for clamping the blocking part, the clamping groove clamps both ends of the blocking part respectively.

Images