Positioning structure of headrest support

Abstract

The utility model provides a positioning structure of headrest support relates to headrest support technical field, include: the pillow rod piece, it includes two pillow rods and connecting rod, two pillow rods are connected in the both ends of connecting rod perpendicularly, headrest support is connected with pillow rod piece sliding, with height position of headrest support on pillow rod piece is adjustable, at least four module bushing spare, it is detachable to set up in headrest support, and at least two module bushing spare is with one pillow rod coaxial sliding connection, every module bushing spare includes bushing main part and floating structure, floating structure is connected in bushing main part. The utility model has the advantages of: through adopting the pillow rod, connecting rod, headrest support and module bushing spare, make module bushing spare can be individually in headrest support and assemble after processing, and through the main support part and floating part in floating structure, make headrest support can adapt to certain pillow rod axial deviation.

Description

Technical Field

[0001] This utility model relates to the field of headrest support technology, and in particular to a positioning structure for a headrest support. Background Technology

[0002] In current automotive seat designs, headrest supports and headrest rods are commonly connected via a sliding mechanism. The headrest support relies on the bushing for positioning relative to the headrest rod. Currently, the bushing and headrest support are generally integrated into a single design, meaning the bushing is directly integrated into the headrest support. This connection method achieves a degree of structural compactness, allowing the headrest support to be installed relatively stably on the headrest rod and to perform basic angle adjustments. It also facilitates the assembly of the headrest portion during vehicle production and assembly processes.

[0003] However, since the bushing is directly integrated inside the headrest bracket, the machining accuracy requirements for both the bushing and the headrest bracket are high. It is necessary to ensure the coaxiality of the bushing axis and the headrest rod passing through the headrest bracket axis so that the headrest bracket and the headrest rod can be fitted together for installation. The gap accuracy needs to be controlled within 0.2mm, which leads to an increase in production costs. Therefore, a new positioning structure is needed to solve the above-mentioned problems. Utility Model Content

[0004] In view of this, embodiments of the present invention provide a positioning structure for a headrest bracket, which solves the technical problems of high precision requirements and high processing costs in the existing headrest bracket bushings.

[0005] An embodiment of this utility model provides a positioning structure for a headrest support, comprising:

[0006] A pillow rod assembly, comprising two pillow rods and a connecting rod, wherein the two pillow rods are vertically connected to both ends of the connecting rod;

[0007] A headrest bracket is slidably connected to the pillow rod, so that the height position of the headrest bracket on the pillow rod is adjustable;

[0008] At least four modular liner kits are detachably disposed within the headrest support, and at least two of the modular liner kits are slidably connected coaxially to one of the pillow rods. Each modular liner kit includes a liner body and a floating structure, the floating structure being connected to the liner body and the pillow rod.

[0009] The floating structure includes a main support and a floating part. The main support and the floating part are respectively connected to the bushing body, and a gap is reserved between the main support and the floating part and they are arranged in the circumferential direction. A hole structure is formed between the main support and the floating part for the pillow rod to pass through. The floating part can move relative to the bushing body.

[0010] Furthermore, the bushing body is rectangular in shape, and the main support is located in the frame-shaped inner cavity of the bushing body. The main support is arc-shaped, and its arc surface has three connection points with the inner wall of the bushing body, so that the axial position of the main support on the bushing body is determined.

[0011] Furthermore, one end of the floating part is integrally connected to the inner wall of the bushing body, and the floating part and the bushing body are connected in a vertical direction in a Chinese character shape, so that there is a margin of movement between the floating part and the bushing body.

[0012] Furthermore, the inner walls of the main support and the floating part are provided with a plurality of protrusions, each of the protrusions abutting against the surface of the pillow rod, and the pillow rod can slide relative to the protrusion.

[0013] Furthermore, a plurality of mounting grooves are provided on one side of the headrest bracket, and the inner wall of the mounting grooves extends toward the center to form an I-shaped latch for engaging the module bushing kit. Triangular buckle portions are provided on both sides of the bushing body, and an abutment portion is provided at one end of the bushing body.

[0014] The snap-fit ​​part and the abutment part are engaged at the bayonet opening so that the module bushing is snapped into the mounting slot.

[0015] Furthermore, limiting grooves are provided on the upper and lower inner walls of the mounting groove, and two limiting strips are provided on the upper and lower sides of the bushing body. The two limiting strips slide against the side walls of the limiting groove.

[0016] Furthermore, the headrest bracket is provided with an unlocking push plate assembly, which has a through hole for the pillow rod to pass through, and the through hole is coaxially arranged with at least two of the module bushings.

[0017] Furthermore, a cover plate is connected to one side of the headrest bracket by screws, so that the unlocking push plate assembly is hidden inside the headrest bracket.

[0018] Furthermore, the upper end of the headrest bracket is connected to a guide portion, and the guide portion is provided with felt that is connected to the two pillow rods, so that the relative movement limit position of the headrest bracket and the pillow rods is restricted.

[0019] Furthermore, the connecting rod is provided with decorative elements.

[0020] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The positioning structure of the headrest bracket of this utility model, by adopting a structure including a pillow rod, a connecting rod, a headrest bracket and a modular bushing, allows the modular bushing to be processed and assembled separately from the headrest bracket. Through the main support part and the floating part in the floating structure, the headrest bracket can adapt to a certain deviation of the pillow rod axis. Furthermore, the abutment between the convex strip and the surface of the pillow rod provides a stable damping feel, effectively reducing the coaxial accuracy requirements between the pillow rod and the headrest bracket, greatly simplifying the production and assembly process, reducing manufacturing costs, and solving the problems of high coaxial accuracy requirements and inconvenient installation and disassembly in traditional technologies. Attached Figure Description

[0021] Figure 1 This is a front view of the positioning structure of the headrest bracket of this utility model;

[0022] Figure 2 This is a partial isometric view of the positioning structure of the headrest bracket of this utility model;

[0023] Figure 3 This is an exploded view of the positioning structure of the headrest bracket of this utility model;

[0024] Figure 4 This is the positioning structure of the headrest bracket of this utility model. Figure 1 Sectional view at point AA;

[0025] Figure 5 This is an isometric view of the module bushing of the positioning structure of the headrest bracket of this utility model.

[0026] In the diagram: 1. Pillow rod; 2. Connecting rod; 3. Headrest bracket; 31. Mounting groove; 32. Limiting groove; 4. Module bushing kit; 41. Bushing body; 42. Abutting part; 43. Buckling part; 44. Main support part; 45. Floating part; 46. Protruding strip; 47. Limiting strip; 5. Guide part; 6. Cover plate; 7. Unlocking push plate assembly; 8. Felt; 9. Decorative parts. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.

[0028] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.

[0031] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0032] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Please refer to Figure 1 The present invention provides a positioning structure for a headrest support, including a pillow rod, a headrest support 3 and at least four modular bushings 4. The pillow rod includes two pillow rods 1 and a connecting rod 2. The two pillow rods 1 are vertically connected to the two ends of the connecting rod 2. The two pillow rods 1 are oriented in the same direction, so that the pillow rod is in a Z-shaped structure.

[0034] It should be noted that the headrest bracket 3 is slidably connected to the pillow rod and can slide up and down along the pillow rod, thereby realizing the headrest height adjustment function. The pillow rod can be deflected in the axial direction so that the angle of the headrest bracket 3 is adjustable.

[0035] Please refer to Figures 3 to 5 In this embodiment, the module liner 4 is detachably disposed inside the headrest bracket 3. Specifically, a plurality of mounting grooves 31 are provided on one side of the headrest bracket 3. The inner wall of the mounting groove 31 extends toward the center to form an I-shaped bayonet, and the module liner 4 is engaged with the bayonet.

[0036] It is understood that the inner wall width of the mounting groove 31 is greater than the width of the module liner 4, and there is an extension perpendicular to the inner wall of the mounting groove 31 at the middle position to form a snap-fit ​​with a width corresponding to the module liner 4.

[0037] More specifically, each module bushing 4 includes a bushing body 41 and a floating structure. The bushing body 41 of the module bushing 4 is rectangular, with triangular buckle portions 43 on both sides and an abutment portion 42 at one end.

[0038] In this case, the right-angled side of the triangular snap-fit ​​part 43 faces the abutment part 42. Therefore, when snapping the module bushing 4, the arc-shaped surface of the snap-fit ​​part 43 of the module bushing 4 needs to contact the slot formed in the mounting groove 31 until the snap-fit ​​part 43 goes beyond the slot, so that the snap-fit ​​part 43 and the abutment part 42 are engaged at the slot of the mounting groove 31, and the module bushing 4 is stably snapped into the mounting groove 31.

[0039] In an alternative embodiment, please refer to Figure 2 and Figure 5 Limiting grooves 32 are provided on the upper and lower inner walls of the mounting groove 31, and two limiting strips 47 are provided on the upper and lower sides of the bushing body 41. The limiting strips 47 slide against the side walls of the limiting groove 32 to prevent the module bushing 4 from shaking excessively or falling off in the mounting groove 31, thus ensuring the reliability of the connection.

[0040] Furthermore, the floating structure is connected to the bushing body 41 and to the pillow rod. The floating structure includes a main support part 44 and a floating part 45. The main support part 44 is located in the frame-shaped inner cavity of the bushing body 41 and is arc-shaped. There are three connection points between its arc-shaped surface and the inner wall of the bushing body 41, thereby determining the axial position of the main support part 44 on the bushing body 41.

[0041] In addition, one end of the floating part 45 is integrally connected to the inner wall of the bushing body 41, and is connected to the bushing body 41 in a vertical direction in a Chinese character shape, so that the floating part 45 can have a certain amount of movement relative to the bushing body 41.

[0042] The main support part 44 and the floating part 45 are arranged in a circumferential direction with a reserved gap between them, forming a hole structure through which the pillow rod 1 passes. The floating part 45 can move relative to the bushing body 41. When the modular bushing 4 is installed on the headrest bracket 3, even if there is a certain deviation between the pillow rod 1 and the hole structure, the floating part 45 can compensate to a certain extent through its own mobility, thereby reducing the coaxial accuracy requirements of the pillow rod and the hole structure and simplifying the production and assembly process.

[0043] In actual production, module bushing 4 is made of injection molded material, so it has a certain elastic deformation to adapt to the displacement caused by the offset of the axis.

[0044] In an alternative embodiment, please refer to Figure 5 The inner walls of the main support part 44 and the floating part 45 are provided with multiple protrusions 46, each protrusion 46 abutting against the surface of the pillow rod 1, and the pillow rod 1 can slide relative to the protrusion 46.

[0045] The design of the protrusion 46 reduces the contact area with the headrest rod 1, while allowing smooth sliding when a certain force is applied, and provides additional grease application gaps to facilitate overall grease application during the initial installation of the headrest bracket 3.

[0046] In one specific embodiment, the diameter of the pillow rod 1 is 14mm, and the minimum distance between the two protrusions 46 located on the axis of the bushing body 41 is 13.7±0.1mm. Thus, the gap between the floating part 45 and the pillow rod 1 is -0.2-0.3mm. Therefore, when the pillow rod 1 and the bushing body 41 are coaxially arranged, the resistance of the sliding action of the pillow rod 1 can still meet the 55N usage requirement, ensuring that the action is not loose in summer and not tight in winter.

[0047] In this embodiment, at least two module bushings 4 are slidably connected to a pillow rod 1 on the same axis to ensure the connection stability of the headrest bracket 3 on the pillow rod. The headrest bracket 3 is also provided with an unlocking push plate assembly 7, which has a through hole for the pillow rod 1 to pass through. The through hole is coaxially arranged with at least two module bushings 4.

[0048] The unlocking push plate assembly 7 is used to unlock or lock the headrest bracket 3 and the pillow rod 1 relative to each other when the headrest bracket 3 needs to be adjusted.

[0049] A cover plate 6 is connected to one side of the headrest bracket 3 by screws, which hides the unlocking push plate assembly 7 and keeps the headrest bracket 3 clean in appearance.

[0050] Please refer to Figure 3 In another optional embodiment, the upper end of the headrest bracket 3 is connected to a guide portion 5, and the guide portion 5 is provided with felt 8 connected to the two pillow rods 1.

[0051] The felt 8 has a certain degree of elasticity, which can buffer and limit the relative movement of the headrest support 3 and the pillow rod, prevent the headrest support 3 from sliding out of the range of the pillow rod, limit its extreme position of movement, and extend its service life.

[0052] The connecting rod 2 is provided with a decorative part 9, which is used to cover the exposed part at the connection between the connecting rod 2 and the pillow rod 1, thereby improving the overall aesthetics.

[0053] In practical applications, during assembly, the modular bushing 4 is first inserted into the mounting groove 31 of the headrest bracket 3, and the limiting strip 47 is embedded in the limiting groove 32 to ensure that the buckle part 43 and the abutment part 42 are tightly fitted with the bayonet. Then, the two pillow rods 1 of the pillow member are respectively inserted into the modular bushing 4 in the headrest bracket 3. The pillow rod 1 passes through the hole structure formed by the main support part 44 and the floating part 45, and the protrusion 46 abuts against the surface of the pillow rod 1. Due to the mobility of the floating part 45, even if there is a slight coaxial deviation between the pillow rod 1 and the hole structure, it can be smoothly inserted and connected. When it is necessary to adjust the height of the headrest, hold the headrest bracket 3 and slide it up and down along the pillow rod. The friction between the protrusion 46 and the pillow rod 1 provides a stable damping feeling, so that the headrest bracket 3 can be positioned at the required height.

[0054] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.

[0055] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning structure for a headrest support, characterized in that, Comprising: A pillow rod member, which includes two pillow rods (1) and a connecting rod (2), and the two pillow rods (1) are vertically connected to both ends of the connecting rod (2); A headrest bracket (3), which is slidably connected to the pillow rod member, so that the height position of the headrest bracket (3) on the pillow rod member is adjustable; At least four module bush sets (4), which are detachably arranged in the headrest bracket (3), and at least two of the module bush sets (4) are coaxially slidably connected to one of the pillow rods (1), and each module bush set (4) includes a bush body (41) and a floating structure, the floating structure is connected to the bush body (41), and the floating structure is connected to the pillow rod member; The floating structure includes a main support portion (44) and a floating portion (45), the main support portion (44) and the floating portion (45) are respectively connected to the bush body (41), and a gap is reserved between the main support portion (44) and the floating portion (45) and arranged in the circumferential direction, a hole structure for the pillow rod (1) to penetrate is formed between the main support portion (44) and the floating portion (45), and the floating portion (45) can move relative to the bush body (41).

2. The positioning structure of the headrest support as described in claim 1, characterized in that: The bush body (41) is in a rectangular frame shape, the main support portion (44) is located in the frame-shaped inner cavity of the bush body (41), the main support portion (44) is in an arc shape, and there are three connection points between its arc surface and the inner wall of the bush body (41), so that the axial position of the main support portion (44) on the bush body (41) is determined.

3. The positioning structure of the headrest support as described in claim 2, characterized in that: One end of the floating portion (45) is integrally connected to the inner wall of the bush body (41), and the floating portion (45) and the bush body (41) are connected in a Chinese character "ji" shape longitudinally, so that there is a movement margin between the floating portion (45) and the bush body (41).

4. The positioning structure of the headrest support as described in claim 3, characterized in that: A plurality of convex strips (46) are provided on the inner walls of the main support portion (44) and the floating portion (45), each convex strip (46) abuts against the surface of the pillow rod (1), and the pillow rod (1) can slide relative to the convex strip (46).

5. The positioning structure of the headrest support as described in claim 1, characterized in that: A plurality of mounting grooves (31) are formed on one side surface of the headrest bracket (3), and the inner wall of the mounting groove (31) extends towards the middle to form a工字-shaped bayonet for clamping the module bush set (4), and triangular clamping portions (43) are provided on both side surfaces of the bush body (41), and an abutting portion (42) is provided at one end of the bush body (41); The clamping portion (43) and the abutting portion (42) are clamped at the bayonet, so that the module bush set (4) is clamped in the mounting groove (31).

6. The positioning structure of the headrest support as described in claim 5, characterized in that: Limiting grooves (32) are formed on the upper and lower inner walls of the mounting groove (31), and two limiting strips (47) are provided on both the upper and lower sides of the bush body (41), and the two limiting strips (47) slide along the two side walls of the limiting groove (32).

7. The positioning structure of the headrest support as described in claim 5, characterized in that: The headrest bracket (3) is provided with an unlocking push plate assembly (7), which has a through hole for the pillow rod (1) to pass through. The through hole is coaxially arranged with at least two of the module bushings (4).

8. The positioning structure of the headrest support as described in claim 7, characterized in that: A cover plate (6) is connected to one side of the headrest bracket (3) by screws so that the unlocking push plate assembly (7) is hidden inside the headrest bracket (3).

9. The positioning structure of the headrest support as described in claim 1, characterized in that: The headrest bracket (3) is connected to a guide part (5) at its upper end. The guide part (5) is provided with a felt (8) connected to the two pillow rods (1), which restricts the relative movement limit position of the headrest bracket (3) and the pillow rods.

10. The positioning structure of the headrest support as described in claim 1, characterized in that: The connecting rod (2) is provided with a decorative piece (9).

Images