Automobile seat headrest rod and headrest guide sleeve assembling structure
By adding ribs and protrusions to the inner wall of the headrest guide cover of the car seat, the abnormal noise problem caused by the headrest rod is solved, and a more stable seat structure and convenient height adjustment are achieved.
Patent Information
- Application Number
- CN202421684559.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The assembly gap between the headrest pole of the existing car seat and the headrest guide cover causes the headrest pole to shake during the vehicle's driving, causing abnormal noise.
Add ribs to four sides of the inner wall of the headrest guide sleeve, and set up protrusions at the top of the ribs to form a gap and interference fit to reduce assembly gaps and eliminate top gaps, ensuring that the headrest rod and the headrest guide sleeve surface line are in contact with each other. Easy to adjust, and simple processing is achieved through injection molding material PA6GF15.
It effectively eliminates the abnormal noise problem caused by the headrest rod shaking in the headrest guide cover, and simplifies the height adjustment process to avoid stagnation.
Smart Images
Figure CN222310443U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobile seats, in particular to an assembly structure of a headrest rod and a headrest guide sleeve of an automobile seat. Background Art
[0002] With the continuous development of the automobile industry, customers have higher and higher requirements for the perceived quality of in-car noise. Currently, most commonly used headrest rods are straight. The straight headrest rods are assembled in the headrest guide sleeves. Due to assembly and adjustment requirements, there must be an assembly gap between the headrest rod and the headrest guide sleeve. During vehicle driving, the assembly gap will cause the headrest rod to shake in the headrest guide sleeve, thereby forming abnormal noise. Utility Model Content
[0003] In view of the problems existing in the above-mentioned prior art, the utility model aims to provide an assembly structure of a headrest rod and a headrest guide sleeve of an automobile seat to solve the problem of abnormal noise caused by the shaking of the headrest rod in the headrest guide sleeve.
[0004] In order to achieve the above-mentioned purpose, the utility model proposes an assembly structure of a headrest rod and a headrest guide sleeve for a car seat, comprising a headrest rod and a headrest guide sleeve, wherein there is an assembly gap between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve, and ribs are provided on four sides of the inner wall of the headrest guide sleeve, and the ribs extend along the length direction of the headrest guide sleeve, and at least one of the ribs on each side has a protrusion on the top radially inwardly, and when the headrest rod is inserted into the headrest guide sleeve, the ribs on the four sides surround the headrest rod to form a gap fit, and the protrusions on the four sides surround the headrest rod to form an interference fit.
[0005] In the above scheme: the height of the protrusion is 5-10 mm. At this height, the protrusion has a better effect of absorbing the assembly gap between the headrest rod and the headrest guide sleeve.
[0006] In the above scheme: the diameter of the headrest rod is 14mm, the inner diameter of the headrest guide sleeve after adding ribs on the inner wall is 14.05mm, and the inner diameter of the headrest guide sleeve after adding protrusions on the ribs is 13.95mm. The ribs reduce the assembly gap between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve, and the protrusions eliminate the assembly gap between the outer wall of the headrest rod and the top of the inner wall of the headrest guide sleeve.
[0007] In the above scheme: a total of eight ribs are arranged on the inner wall of the headrest guide sleeve, two ribs on each side, and a protrusion is arranged on one of the ribs on each side, which has a simple structure and is easy to process.
[0008] In the above scheme: the headrest guide sleeve, ribs and protrusions are integrally injection-molded, and the molding material is PA6GF15 material, which has a simple structure and is easy to process.
[0009] The beneficial effects of the utility model are as follows: first, ribs are added on the four sides of the inner wall of the headrest guide sleeve to reduce the assembly gap between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve, and the headrest rod and the headrest guide sleeve form surface-line contact, which is convenient for the headrest rod to be adjusted in height, and the problem that the traditional headrest rod and the headrest guide sleeve are in surface-to-surface contact, and the headrest rod is prone to jamming when the height is adjusted is solved; then, protrusions are added to the ribs so that the actual inner diameter of the top end of the headrest guide sleeve is smaller than the diameter of the headrest rod, and when the headrest rod is inserted into the headrest guide sleeve, the assembly gap between the top end of the headrest guide sleeve and the headrest rod can be eliminated, and because the protrusion and the headrest rod are equivalent to a point-to-surface contact connection, the height adjustment of the headrest rod (including operating force) is not affected; in short, the utility model effectively solves the problem of abnormal noise caused by the shaking of the headrest rod in the headrest guide sleeve. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a front view of the utility model.
[0011] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle.
[0012] Figure 3 yes Figure 2 Cross-sectional view at point M in the middle.
[0013] Figure 4 It is a top view of the utility model. DETAILED DESCRIPTION
[0014] like Figure 1 As shown in FIG. 4 , a car seat headrest rod and headrest guide sleeve assembly structure is mainly composed of a headrest rod and a headrest guide sleeve 1, and an assembly gap exists between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve 1.
[0015] Ribs 2 are provided on four sides of the inner wall of the headrest guide sleeve 1. The ribs 2 extend along the length direction of the headrest guide sleeve 1, and at least one of the ribs 2 on each side has a protrusion 3 radially inwardly provided at the top end. When the headrest rod is inserted into the headrest guide sleeve 1, the ribs 2 on the four sides are surrounded by the headrest rod to form a clearance fit, and the protrusions 3 on the four sides are surrounded by the headrest rod to form an interference fit.
[0016] That is, the present application firstly adds ribs 2 on the four sides of the inner wall of the headrest guide sleeve 1 to reduce the assembly gap between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve 1, and makes the headrest rod and the headrest guide sleeve 1 form surface-line contact, which is convenient for the height adjustment of the headrest rod, and solves the problem that the traditional headrest rod and the headrest guide sleeve 1 are in surface-to-surface contact, and the headrest rod is prone to jamming when the height is adjusted; and then adds a protrusion 3 on the rib 2, so that the actual inner diameter of the top end of the headrest guide sleeve 1 is smaller than the diameter of the headrest rod. When the headrest rod is inserted into the headrest guide sleeve 1, the assembly gap between the top end of the headrest guide sleeve 1 and the headrest rod can be eliminated, and because the protrusion 3 and the headrest rod are equivalent to a point contact connection, it does not affect the height adjustment of the headrest rod.
[0017] Preferably, the height of the protrusion 3 is 5-10 mm. At this height, the protrusion 3 has a better effect of absorbing the assembly gap between the headrest rod and the headrest guide sleeve 1.
[0018] Preferably, the diameter of the headrest rod is 14 mm, the inner diameter of the headrest guide sleeve 1 is 14.05 mm after the ribs 2 are added to the inner wall, and the inner diameter of the headrest guide sleeve 1 is 13.95 mm after the protrusions 3 are added to the ribs 2. The ribs 2 reduce the assembly gap between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve 1, and the protrusions 3 eliminate the assembly gap between the outer wall of the headrest rod and the top of the inner wall of the headrest guide sleeve 1.
[0019] Preferably, a total of eight ribs 2 are provided on the inner wall of the headrest guide sleeve 1, with two ribs 2 on each side, and a protrusion 3 is provided on one of the ribs 2 on each side, which has a simple structure and is easy to process.
[0020] Preferably, the headrest guide sleeve 1, the ribs 2 and the protrusions 3 are integrally injection molded, and the molding material is PA6GF15 material, which has a simple structure and is easy to process.
Claims
1. A headrest rod and headrest guide sleeve assembly structure for a car seat, comprising a headrest rod and a headrest guide sleeve (1), wherein an assembly gap exists between the outer wall of the headrest rod and the inner wall of the headrest guide sleeve (1), and characterized in that: The inner wall of the headrest guide sleeve (1) is provided with ribs (2) on four sides, and the ribs (2) extend along the length direction of the headrest guide sleeve (1), and at least one of the ribs (2) on each side has a protrusion (3) radially inwardly provided at the top end. When the headrest rod is inserted into the headrest guide sleeve (1), the ribs (2) on the four sides are surrounded by the headrest rod to form a clearance fit, and the protrusions (3) on the four sides are surrounded by the headrest rod to form an interference fit.
2. The assembly structure of the headrest rod and the headrest guide sleeve of the automobile seat according to claim 1, characterized in that: The height of the protrusion (3) is 5-10 mm.
3. The assembly structure of the headrest rod and the headrest guide sleeve of the automobile seat according to claim 1, characterized in that: The diameter of the headrest rod is 14 mm, the inner diameter of the headrest guide sleeve (1) after the ribs (2) are added on the inner wall is 14.05 mm, and the inner diameter of the headrest guide sleeve (1) after the protrusions (3) are added on the ribs (2) is 13.95 mm.
4. The assembly structure of the headrest rod and the headrest guide sleeve of the automobile seat according to claim 1, characterized in that: A total of eight ribs (2) are arranged on the inner wall of the headrest guide sleeve (1), with two ribs (2) on each side, and a protrusion (3) is arranged on one of the ribs (2) on each side.
5. The assembly structure of the headrest rod and the headrest guide sleeve of the automobile seat according to claim 1, characterized in that: The headrest guide sleeve (1), ribs (2) and protrusions (3) are integrally injection-molded, and the molding material is PA6GF15 material.