Seat headrest locking device shell
By introducing a hook structure into the headrest locking device, the problems of unstable connection between the top cover and the seat and finger punctures are solved, achieving a more stable connection and a safer installation process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-13
AI Technical Summary
In existing car seat headrest locking devices, the cover applies an upward tension force to the top cover when it is taut, which causes the connection between the top cover and the seat to be unstable, and the sharp point of the fixing protrusion can easily prick fingers.
The device employs a hook-and-loop structure, consisting of a horizontal section and a vertical section. The horizontal section is positioned horizontally on the inner wall of the seat cavity and hooks onto the fixing holes. The vertical section bends downward to prevent the tension of the faceplate from acting directly on the top cover, and the surface of the hook-and-loop section is smooth to prevent punctures.
The connection stability between the top cover and the base is improved, preventing the top cover from detaching due to the tension of the cover. The hook design also reduces the risk of finger punctures and enhances installation safety.
Smart Images
Figure CN223989972U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive seat components, specifically to a seat headrest locking device housing. Background Technology
[0002] Existing car seat backrests have a headrest at the top, with a metal rod inserted vertically downwards into the seat back. The headrest height is adjusted by sliding the metal rod vertically across the top of the seat back. A headrest locking device at the top of the seat locks the metal rod, preventing the headrest from moving freely when height adjustment is not required. When the headrest locking device is unlocked, the metal rod is no longer locked, and the headrest height can be adjusted.
[0003] Combination Figure 1 and Figure 2 As shown, the housing of the existing headrest locking device includes a seat 1 and a top cover 2. The top cover 2 is fitted onto the seat 1, and the top cover 2 and the seat 1 are snapped together. The seat 1 is installed on the top of the seat back. The seat cover 8 at the top of the seat back has a seat clearance hole, the shape of which is adapted to the shape of the seat 1. The seat 1 is installed at the seat clearance hole, so that the seat cover 8 does not obstruct the installation of the seat 1 onto the top of the seat back. The interior of the seat 1 has multiple vertical fixing protrusions 3. The seat cover 8 has multiple fixing holes around the seat clearance hole, which are adapted to the fixing protrusions 3. Thus, the seat 1 is installed on the top of the seat back, and the edge of the seat clearance hole of the seat cover 8 extends into the interior of the seat 1. The fixing protrusions 3 pass through the fixing holes, thereby fixing the seat cover 8. Under the limiting action of the fixing protrusions 3, the edge of the seat clearance hole of the seat cover 8 is in a taut state, and the top surface of the seat cover 8 is relatively flat. Then, the upper cover 2 is placed on the seat body 1. The upper cover 2 presses the cover 8 between the upper cover 2 and the seat body 1. The edge of the seat body clearance hole is located between the upper cover 2 and the seat body 1 and will not be exposed, thus ensuring the aesthetics of the top of the seat back.
[0004] However, in the prior art, the fixing protrusion 3 faces upward and the top of the fixing protrusion 3 has a pointed tip. When the fixing hole of the faceplate 8 is manually put on the fixing protrusion 3 from top to bottom, the fingers can easily touch the top of the fixing protrusion 3. When the number of installations is large, the fingers will repeatedly come into contact with the top of the fixing protrusion 3, and the fingers can easily be pricked.
[0005] At the same time, combined Figure 2 As shown, the upper cover 2 is placed on the base 1, and the bottom end of the upper cover 2 presses against the faceplate 8. Since the faceplate 8 is in a taut state, the taut faceplate 8 exerts an upward tension on the upper cover 2. Figure 2(The upward force indicated by the arrow) The part of the face cover 8 located at the bottom of the base has an upward tendency. In this way, the upper cover 2 is easy to move upward under the tension of the face cover 8 and separate from the base 1, which is not conducive to the stable connection between the upper cover 2 and the base 1. Utility Model Content
[0006] The present invention aims to provide a housing for a seat headrest locking device to solve the problem in the prior art where the upper cover is subjected to an upward force when the cover is in a taut state, causing instability in the connection between the upper cover and the seat.
[0007] To achieve the above objectives, the present invention adopts the following technical solution: a seat headrest locking device housing, comprising a seat body and an upper cover capable of being closed and snapped onto the seat body, wherein the seat body is recessed and has a cavity; a plurality of hook portions are fixedly provided on the inner side wall of the seat body cavity, and the hook portions include at least a horizontal portion for hooking onto the fixing hole.
[0008] The principle and advantages of this solution are as follows: The hook part in this solution is used to hook onto the fixing holes around the clearance holes of the seat body of the cover, thereby realizing the connection between the seat body and the cover. Since the horizontal part is set horizontally on the inner wall of the seat body cavity, it is no longer set vertically. Therefore, the fixing holes hook onto the horizontal part, and the cover fits against the inner wall of the seat body cavity. The tension force of the cover acts on the inner wall of the seat body cavity. In this way, when the cover is closed on the seat body, the cover will not exert an upward tension force on the cover. Because the cover is not subjected to an upward tension force from the cover, the connection between the cover and the seat body is more stable, avoiding the situation where the cover is not firmly or stably connected to the seat body due to the upward tension force exerted by the cover.
[0009] Preferably, as an improvement, the hook portion further includes a vertical portion fixed to the horizontal portion, the vertical portion being bent downwards below the horizontal portion. Thus, with the vertical portion bent downwards below the horizontal portion, the fixing hole hooks onto the hook portion, and the vertical portion acts as a barrier against the face cover, preventing the face cover from easily detaching from the end of the horizontal portion away from the inner wall of the seat cavity. Simultaneously, with the vertical portion facing downwards, the upper surface of the hook portion is relatively smooth, and when the fixing hole is hooked onto the hook portion, compared to the prior art where the pointed end of the fixing protrusion faces upwards, the hook portion is less likely to cause finger injuries.
[0010] Preferably, as an improvement, the lateral length of the horizontal part is 2-5mm.
[0011] Preferably, as an improvement, the vertical length of the vertical part is 2-5mm.
[0012] Preferably, as an improvement, the number of hooks is 8-15.
[0013] Preferably, as an improvement, the distance between adjacent hooks is 20-30mm.
[0014] Preferably, as an improvement, the bottom edge of the seat body is provided with multiple through holes, which are located below the hook portion, and the through holes and hook portions are opposite each other. Therefore, the through holes facilitate the injection molding of the hook portion and the demolding of the seat body after injection molding. Without the through hole structure, because the hook portion is laterally located within the seat body cavity, and there is a gap between the hook portion and the bottom of the cavity, the hook portion cannot be injection molded. Even if the hook portion is injection molded, the product cannot be demolded.
[0015] Preferably, as an improvement, the distance between the bottom of the vertical part and the bottom wall of the seat cavity is at least 3 mm. This ensures that the distance between the bottom of the vertical part and the bottom wall of the seat cavity is at least 3 mm, preventing the fixing holes of the faceplate from being too small to fit onto the hook part.
[0016] Preferably, as an improvement, a reinforcing rib is provided between the upper surface of the hook and the inner wall of the seat cavity. This reinforcing rib improves the structural strength of the hook, making it less prone to breakage under the tension of the faceplate.
[0017] Preferably, as an improvement, the distance between the upper surface of the hook and the top of the seat is at least 10mm. This allows the cover to extend a greater distance into the seat, and the distance between the cover's seat clearance hole and the top of the seat is greater, making the cover's seat clearance hole less likely to be exposed through the gap between the seat and the top cover under pulling. Attached Figure Description
[0018] Figure 1 This is a perspective view of the headrest locking device at the top of the seat back in the prior art, mainly showing the vertical fixing protrusion.
[0019] Figure 2 This is a schematic diagram of the fixing hole of the faceplate in the prior art being fitted onto the fixing protrusion.
[0020] Figure 3 A perspective view of the improved headrest locking device housing (with the top cover fitting onto the seat).
[0021] Figure 4 This is a three-dimensional diagram of the base.
[0022] Figure 5 This is a stereoscopic view of the seat from another perspective.
[0023] Figure 6 for Figure 5 A magnified view of B in the middle.
[0024] Figure 7 This is a schematic diagram of the fixing hole of the face mask fitting onto the hook part.
[0025] Figure 8 This is a 3D view of the top cover. Detailed Implementation
[0026] The following detailed description illustrates the specific implementation method:
[0027] The reference numerals in the accompanying drawings include: base 1, top cover 2, buckle 21, fixing protrusion 3, metal rod 4, hook part 5, horizontal part 51, vertical part 52, through hole 6, cavity 7, face cover 8.
[0028] The basic implementation examples are as follows: Figures 3-8 The image shows a headrest locking device housing, comprising a seat body 1 and an upper cover 2 capable of engaging (e.g., the seat body 1 has a locking hole or slot, and the upper cover 2 has a buckle 21, which is engaged in the locking hole or slot) on the seat body 1. The seat body 1 has a recessed cavity 7. The improvement of this embodiment lies in the hooking method between the face cover 8 and the seat body 1. Therefore, this embodiment focuses on describing the improvement of the hooking method structure of the seat body 1 on the face cover 8. Other structures are not described in this embodiment because they are not part of the inventive point of this application. For example, the cavity 7 of the seat body 1 has a locking structure for locking the metal rod 4 on the headrest. Since this embodiment does not improve the locking structure, the locking structure is not shown in the cavity 7 of the seat body 1 in this embodiment. Similarly, the hooking method between the seat body 1 and the upper cover 2 is not part of the inventive point of this application, and is not described in detail in this embodiment.
[0029] The following is a detailed description of the structure by which the base 1 hooks onto the sleeve 8.
[0030] In this embodiment, a plurality of hook parts 5 are fixed (specifically integrally formed) on the inner wall of the chamber 7 of the seat body 1. The number of hook parts 5 is 8-15, and the plurality of hook parts 5 are distributed on the inner wall of the chamber 7. The distance between adjacent hook parts 5 is 20-30mm. The number of hook parts 5 and the distance between adjacent hook parts 5 are set according to the actual size of the seat body 1.
[0031] The hook portion 5 includes at least a horizontal portion 51 for hooking onto the fixing hole. The horizontal portion 51 is arranged laterally and is integrally formed on the inner wall of the cavity 7 of the seat body 1. The lateral length of the horizontal portion 51 is specifically 2-5 mm. In this embodiment, the hook portion 5 includes not only the horizontal portion 51, but also a vertical portion 52 fixed (integrally formed) on the horizontal portion 51. The vertical portion 52 is bent downward below the horizontal portion 51, thus, in this embodiment, the vertical portion 52 is arranged downward. The upper surface of the horizontal portion 51 and the side of the vertical portion 52 away from the cavity 7 of the seat body 1 have a smooth transition. In this embodiment, the vertical length of the vertical portion 52 is specifically 2-5 mm.
[0032] In this embodiment, the base 1 is an injection-molded part. To facilitate the injection molding of the hook portion 5 on the base 1, reduce manufacturing difficulty, and facilitate demolding, multiple through holes 6 are provided on the bottom edge of the base 1 in this embodiment. The through holes 6 are located below the hook portion 5, and the through holes 6 and the hook portion 5 are opposite each other. By setting the through holes 6, the hook portion 5 can be injection molded, and the base 1 can be demolded after injection molding.
[0033] In specific use of this embodiment: (in conjunction with...) Figure 7 As shown, the edge of the seat clearance hole of the face mask 8 extends to one side of the cavity 7 of the seat body 1. The fixing hole of the face mask 8 passes through the bottom end of the vertical part 52 of the hook part 5 and hooks onto the horizontal part 51, thereby realizing the connection between the seat body 1 and the face mask 8. In this embodiment, in order to facilitate the fixing hole of the face mask 8 to be inserted from the bottom end of the vertical part 52, the distance between the bottom end of the vertical part 52 and the bottom wall of the cavity 7 of the seat body 1 ( Figure 7 The length distance shown in Z is at least 3mm, so that the distance between the bottom of the vertical part 52 and the bottom wall of the chamber 7 of the seat body 1 is not too small, so that the fixing hole of the faceplate 8 can be put on the hook part 5 from the bottom end of the vertical part 52.
[0034] In this embodiment, since the horizontal part 51 is horizontally arranged on the inner wall of the chamber 7 of the seat body 1, the horizontal part 51 is no longer vertically arranged. Therefore, the fixing hole hook is hung on the horizontal part 51, and the face cover 8 is in contact with the inner wall of the chamber 7 of the seat body 1. When the face cover 8 is tightened from left to right, the tightening force of the face cover 8 is... Figure 7 The lateral force acts on the inner wall of chamber 7 of seat 1, so that the upper cover 2 closes on the seat 1, and the face cover 8 does not exert an upward force on the upper cover 2. Since the upper cover 2 is not subjected to the upward tension force of the face cover 8, the connection between the upper cover 2 and the seat 1 is more stable, avoiding the situation where the upper cover 2 is not firmly or stably connected to the seat 1 due to the upward tension force given by the face cover 8.
[0035] Meanwhile, because the upper surface of the hook part 5 is smooth and the vertical part 52 is set downward, the hook part 5 will not prick the fingers when the fixing hole is hooked on the hook part 5, thus improving the safety of the face cover 8 and the base 1 during assembly and installation.
[0036] Since the force of the faceplate 8 is applied to the hook part 5 after the faceplate 8 is tightened, in some embodiments, in order to improve the connection between the hook part 5 and the inner wall of the chamber 7 of the seat body 1 and to prevent the hook part 5 from breaking from the inner wall of the chamber 7, a reinforcing rib (not shown in the figure) is integrally provided between the upper surface of the hook part 5 and the inner side wall of the chamber 7 of the seat body 1.
[0037] The distance between the upper surface of the hook part 5 and the top of the seat 1 ( Figure 7The length distance (as shown in Y) is at least 10mm. The purpose of this setting is that the length of the face cover 8 extending into the inner wall of the chamber 7 of the seat body 1 is relatively large, the distance between the seat body clearance hole of the face cover 8 and the top of the seat body 1 is relatively large, and the seat body clearance hole of the face cover 8 is not easily exposed from the gap between the seat body 1 and the top cover 2 under pulling.
[0038] Combination Figure 7 As shown, the gap between the upper cover 2 and the base 1 in this embodiment ( Figure 7 The distance (as shown in X) is between 1-2mm (the gap between the upper cover 2 and the inner wall of the seat 1 is one-half to two-thirds of the thickness of the mask), so that the mask 8, the upper cover 2 and the inner wall of the seat 1 are interference fit. The mask 8 is squeezed by the upper cover 2 and the inner wall of the chamber 7 of the seat 1. When the mask 8 is pulled, there will be no gap between the upper cover 2 and the inner wall of the chamber 7 of the seat 1.
[0039] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A seat headrest locking device housing, comprising a seat body and an upper cover capable of being clamped on the seat body, a cavity being provided in the seat body; characterized in that: A plurality of hooking parts are fixed on the inner side wall of the seat body chamber, and the hooking parts at least include a horizontal part for hooking the fixing hole.
2. A seat headrest locking device housing according to claim 1, characterized in that: The hooking part further includes a vertical part fixed on the horizontal part, and the vertical part is bent downward below the horizontal part.
3. The housing for a seat headrest locking device of claim 1, wherein: The horizontal length of the horizontal part is 2-5 mm.
4. The seat headrest locking device housing according to claim 2, characterized in that: The vertical length of the vertical part is 2-5 mm.
5. The seat headrest locking device housing according to claim 1, characterized in that: The number of the hooking parts is 8-15.
6. The seat headrest locking device housing according to claim 1, characterized in that: The distance between adjacent hooking parts is 20-30 mm.
7. The seat headrest locking device housing according to claim 1, characterized in that: A plurality of through holes are arranged on the edge part of the seat body bottom, and the through holes are below the hooking parts, and the through holes and the hooking parts are one-to-one corresponding.
8. The seat headrest locking device housing according to claim 2, characterized in that: The distance between the bottom end of the vertical part and the bottom wall of the seat body chamber is at least 3 mm.
9. The seat headrest locking device housing according to claim 1, characterized in that: A reinforcing rib is arranged between the upper surface of the hooking part and the inner side wall of the seat body chamber.
10. The seat headrest locking device housing according to claim 1, characterized in that: The distance between the upper surface of the hooking part and the top of the seat body is at least 10 mm.