A headrest support assembly

Abstract

The utility model provides a headrest support assembly relates to headrest support technical field, include: the pillow bar frame, it includes two pillow bars and connecting rod, connecting rod both ends are connected with two pillow bars respectively, two pillow bar all have the inner chamber of bottom end opening, the outer wall of pillow bar is provided with a plurality of oil outlet hole, a plurality of oil outlet hole with inner chamber intercommunication, headrest assembly, its inside is equipped with the bush, headrest assembly passes through bush and pillow bar frame sliding connection. The utility model has the advantages of: through setting up the pillow bar frame, headrest assembly, oil outlet structure, lubricating grease gun and press oil structure, effectively solved the problem of big sliding resistance, uneven distribution of lubricating oil and inconvenient supplement in the prior art, the plugging piece and elastic piece cooperation in the oil outlet structure, ensure that the grease is closed in the non - working state, avoid the loss, and under the action of press oil structure can smoothly flow out, form even lubricating film, significantly reduce the sliding resistance between headrest assembly and pillow bar frame.

Description

Technical Field

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

[0002] Currently, the manufacturing process for headrest support assemblies is relatively mature. Their structural design effectively supports the headrest, meets the needs of different passengers, and to a certain extent, ensures compatibility with car seats. In actual production, to reduce the coefficient of friction between the moving parts of the headrest support assembly and improve its service life and performance stability, lubricating grease is typically applied.

[0003] However, the current method of lubricating headrest bracket assemblies is to place lubricating grease before the headrest bracket assembly is installed. This method is difficult to ensure the uniform distribution and full coverage of grease during subsequent installation. Once the installation is completed, due to the structural limitations of the headrest bracket assembly and the special location of the assembly, it is extremely inconvenient to lubricate it again. In order to solve this technical problem, a new headrest bracket assembly is proposed. Utility Model Content

[0004] In view of this, an embodiment of the present invention provides a headrest bracket assembly to solve the technical problem of difficulty in applying oil after the headrest bracket assembly is installed.

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

[0006] A pillow rod frame includes two pillow rods and a connecting rod. The two ends of the connecting rod are respectively connected to the two pillow rods. Both pillow rods have an inner cavity with an opening at the bottom. The outer wall of the pillow rod is provided with multiple oil outlet holes, and the multiple oil outlet holes communicate with the inner cavity.

[0007] A headrest assembly with an internal bushing, the headrest assembly being slidably connected to the headrest frame via the bushing;

[0008] Multiple oil outlet structures are disposed in the inner cavity of the bolster rod and connected to the oil outlet hole. Each oil outlet structure includes an oil injection nozzle, a sealing member, and an elastic member. The oil injection nozzle and the oil outlet hole are connected. The sealing member is movably disposed in the oil injection nozzle. The elastic member is disposed between the inner wall of the oil injection nozzle and the sealing member, so that the sealing member can naturally close the oil injection nozzle.

[0009] A grease gun, located at the bottom of the inner side of the bolster, is used to store grease;

[0010] And an oil-pressing structure connected to the grease gun, which allows the lubricating grease in the grease gun to overflow through multiple oil outlet structures, thereby reducing the relative sliding resistance between the pillow frame and the headrest assembly.

[0011] Furthermore, the oil injection nozzle is provided with an end facing the inner cavity of the bolster rod, and tapered holes are opened through both ends of the end. The sealing member fits into the tapered hole surface of the end to seal the end.

[0012] Furthermore, the sealing element is a spherical steel ball, the elastic element is a spring, one end of the spring is disposed outside the spherical steel ball, and pushes the spherical surface of the spherical steel ball to fit against the tapered hole wall of the end.

[0013] Furthermore, the diameter of the spherical steel ball is smaller than the inner diameter of the oil injection nozzle, a fixing plate is provided on the inner wall of the oil injection nozzle, one end of the spring is connected to the fixing plate, and a through hole for grease to pass through is provided in the middle of the fixing plate.

[0014] Furthermore, the inner cavity of the bolster rod is provided with multiple fillers, and adjacent fillers form an oil reservoir in the inner cavity of the bolster rod. The oil reservoir corresponds to the position of the oil injection nozzle, and the center of the filler has a hole for the flow of lubricating grease.

[0015] Furthermore, the oil-pressing structure includes a drive rod, an oil-pressing plate, and a seal. The drive rod is rotatably mounted on the bottom end of the inner cavity of the bolster rod via a support base, and the drive rod extends into the grease gun. The oil-pressing plate is attached to the inner wall of the grease gun and threadedly connected to the drive rod. The seal is connected to the drive rod and the grease gun. By rotating the drive rod, the oil-pressing plate slides and squeezes the lubricating grease into the pores of the filler within the grease gun.

[0016] Furthermore, a flexible pad is connected to one end of the pressure plate, and the flexible pad slides against the inner wall of the grease gun.

[0017] Furthermore, the sealing element includes a sealing bearing and a cover plate, the cover plate being connected to the opening end of the grease gun, and the sealing bearing being connected to the cover plate and the drive rod.

[0018] Furthermore, the inner wall of the grease gun is provided with a guide strip, and the pressure plate is slidably connected to the guide strip.

[0019] Furthermore, the headrest assembly contains multiple felts.

[0020] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows: The headrest support assembly of this utility model, by setting up a headrest rod frame, a headrest assembly, an oil outlet structure, a grease gun, and an oil pressure structure, effectively solves the problems of high sliding resistance, uneven distribution of lubricating grease, and inconvenience in replenishment in the prior art. The sealing component and the elastic component in the oil outlet structure cooperate to ensure that the grease is sealed in the non-working state to prevent loss, while under the action of the oil pressure structure, it can flow out smoothly to form a uniform lubricating film, significantly reducing the sliding resistance between the headrest assembly and the headrest rod frame and improving the smoothness of adjustment. The oil pressure structure drives the oil pressure plate to slide and squeeze the grease through a rotating drive rod, which is simple to operate and can efficiently replenish the grease. The felt design inside the headrest assembly further evenly distributes the grease and also plays a role in dust prevention, reducing the intrusion of external impurities and extending the service life of the components. With its structural innovation and multiple advantages, this headrest support assembly has extremely high practical value and market application prospects. Attached Figure Description

[0021] Figure 1 This is a front view of the headrest support assembly of this utility model;

[0022] Figure 2 This is an exploded view of the headrest support assembly of this utility model;

[0023] Figure 3 This utility model is a headrest support assembly. Figure 1 Sectional view at point AA;

[0024] Figure 4 This utility model is a headrest support assembly. Figure 4 Enlarged view of the structure at point B in the middle;

[0025] Figure 5 This is a schematic diagram of the grease gun for the headrest support assembly of this utility model.

[0026] In the diagram: 1. Headrest frame; 101. Headrest rod; 102. Rubber plug; 103. Oil outlet; 2. Connecting rod; 3. Headrest assembly; 4. Bushing; 401. Protrusion; 5. Oil nozzle; 6. Fixing plate; 7. Sealing component; 8. Elastic component; 9. End; 10. Filler; 11. Grease gun; 12. Drive rod; 13. Sealed bearing; 14. Oil pressure plate; 15. Flexible pad; 16. Guide strip; 17. Cover plate; 18. Felt. 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 Figures 1 to 3 The present invention provides a headrest support assembly, including a headrest rod frame 1, a headrest assembly 3, multiple oil outlet structures, a grease gun 11, and an oil pressurization structure.

[0034] The pillow rod frame 1 includes two pillow rods 101 and a connecting rod 2. The two ends of the connecting rod 2 are connected to the two pillow rods 101 respectively. Both pillow rods 101 have an inner cavity with an opening at the bottom. The outer wall of the pillow rod 101 is provided with multiple oil outlet holes 103. The multiple oil outlet holes 103 are connected to the inner cavity to facilitate the injection and distribution of grease.

[0035] Multiple oil outlet holes 103 are equidistantly distributed in a circle on the bolster rod 101, and oil outlet holes 103 are provided at two height positions in the vertical direction to improve the uniformity of lubricating grease distribution.

[0036] The headrest assembly 3 has a bushing 4 inside, which is slidably connected to the pillow frame 1 and can slide up and down along the pillow frame 1 to realize the headrest height adjustment function.

[0037] Furthermore, the inner wall of the bushing 4 is provided with a protrusion 401, and the bushing 4 contacts the pillow rod 101 through the protrusion 401. That is to say, there is a gap between the inner wall of the bushing 4 and the outer wall of the pillow rod 101, so that the overflowing lubricating grease can slide to form a film and avoid the lubricating grease from accumulating on the bushing 4.

[0038] Please refer to Figure 4 In this embodiment, multiple oil outlet structures are disposed in the inner cavity of the pillow rod 101 and are connected to the oil outlet hole 103. Each oil outlet structure includes an oil injection nozzle 5, a sealing member 7, and an elastic member 8. The oil injection nozzle 5 is connected to the oil outlet hole 103. The sealing member 7 is movably disposed in the oil injection nozzle 5. The elastic member 8 is disposed between the inner wall of the oil injection nozzle 5 and the sealing member 7, so that the sealing member 7 can naturally seal the oil injection nozzle 5 to prevent grease from flowing out when not in operation.

[0039] Specifically, an end cap 9 is provided on one end of the oil injection nozzle 5 facing the inner cavity of the bolster rod 101. Conical holes are opened through both ends of the end cap 9. The sealing element 7 is a spherical steel ball, and the elastic element 8 is a spring. One end of the spring is located outside the spherical steel ball and pushes the spherical surface of the spherical steel ball to fit against the wall of the conical hole of the end cap 9 to achieve a seal on the oil injection nozzle 5.

[0040] In addition, the diameter of the spherical steel ball is smaller than the inner diameter of the grease nipple 5, so that when the spherical steel ball is far away from the opening of the end 9, it can provide space for the lubricating grease to move. The inner wall of the grease nipple 5 is provided with a fixing plate 6, one end of the spring is connected to the fixing plate 6, and the middle of the fixing plate 6 has a through hole for the grease to pass through.

[0041] When the hydraulic pressurization structure is working, the grease pressure overcomes the spring force, pushing the spherical steel ball to move, allowing the grease to enter the grease nozzle 5 and flow out through the oil outlet 103; when the hydraulic pressurization structure stops working, the spring pushes the spherical steel ball to reset, resealing the grease nozzle 5.

[0042] Please see Figure 3 In this embodiment, the inner cavity of the pillow rod 101 is provided with a plurality of fillers 10, and adjacent fillers 10 form an oil storage chamber in the inner cavity of the pillow rod 101. The oil storage chamber corresponds to the position of the oil injection nozzle 5, and the middle of the filler 10 has a hole for the flow of lubricating grease.

[0043] In this embodiment, the grease gun 11 is located at the bottom of the inner side of the bolster 101 and is used to store grease. The oil pressing structure includes a drive rod 12, an oil pressing plate 14, and a seal.

[0044] Please see Figure 5In an optional embodiment, the drive rod 12 is rotatably mounted on the bottom end of the inner cavity of the bolster rod 101 via a support base, and the drive rod 12 extends into the grease gun 11. The pressure plate 14 is fitted against the inner wall of the grease gun 11 and threadedly connected to the drive rod 12, and a seal is connected to the drive rod 12 and the grease gun 11.

[0045] In the specific implementation process, by rotating the drive rod 12, the pressure plate 14 slides inside the grease gun 11, squeezing the lubricating grease from the outlet of the grease gun 11 into the pores of the filler 10.

[0046] One end of the pressure plate 14 is connected to a flexible pad 15, which slides against the inner wall of the grease gun 11 to ensure the sealing of the oil pressing process.

[0047] In an optional embodiment, the seal includes a sealing bearing 13 and a cover plate 17, the cover plate 17 being connected to the open end of the grease gun 11, and the sealing bearing 13 being connected to the cover plate 17 and the drive rod 12 to prevent grease from leaking from the connection between the drive rod 12 and the grease gun 11.

[0048] To prevent the pressure plate 14 from rotating with the drive rod 12, a guide strip 16 is provided on the inner wall of the grease gun 11. The pressure plate 14 is slidably connected to the guide strip 16 to ensure that the pressure plate 14 remains stable during sliding and does not deviate.

[0049] The headrest assembly 3 is equipped with multiple felts 18. The felts 18 can absorb excess oil and are evenly distributed on the sliding surfaces of the headrest assembly 3 and the pillow frame 1, further reducing sliding resistance and playing a certain role in dust prevention, reducing the intrusion of external impurities.

[0050] Meanwhile, in order to facilitate the control of the rotation of the drive rod 12, a rubber plug 102 is used to block the lower opening of the bolster rod 101.

[0051] In practical use, when the headrest bracket assembly needs to be lubricated after installation, the rubber plug 102 at the lower end of the headrest rod 101 is removed, and the drive rod 12 is rotated by an external device. Under the rotation of the drive rod 12, the oil pressure plate 14 moves and squeezes the grease in the grease gun 11 through the threaded engagement, so that the grease in the grease gun 11 is squeezed out and further enters the pores of the filler 10. Then it gathers in the oil storage chamber of the headrest rod 101 cavity. Under the continuous increase of pressure, the grease overcomes the elastic force of the elastic element 8 in the grease injection nozzle 5, and pushes the sealing element 7 away from the end 9 position. Thus, the grease flows through the grease injection nozzle 5 and the oil outlet 103 to the sliding surface of the headrest assembly 3 and the headrest rod 1, forming a lubricating film and reducing sliding resistance. The felt 18 absorbs the excess grease, making the lubrication more uniform and lasting. Then, under the action of the elastic element 8, the end 9 is closed again.

[0052] 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.

[0053] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0054] 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 headrest support assembly, characterized in that, include: Pillow rod frame (1), which includes two pillow rods (101) and a connecting rod (2). The two ends of the connecting rod (2) are respectively connected to the two pillow rods (101). Both pillow rods (101) have an inner cavity with an opening at the bottom. The outer wall of the pillow rod (101) is provided with a plurality of oil outlet holes (103), and the plurality of oil outlet holes (103) are connected to the inner cavity. The headrest assembly (3) has a bushing (4) inside, and the headrest assembly (3) is slidably connected to the pillow frame through the bushing (4); Multiple oil outlet structures are disposed in the inner cavity of the pillow rod (101) and connected to the oil outlet hole (103). Each oil outlet structure includes an oil injection nozzle (5), a sealing member (7) and an elastic member (8). The oil injection nozzle (5) and the oil outlet hole (103) are connected. The sealing member (7) is movably disposed in the oil injection nozzle (5). The elastic member (8) is disposed between the inner wall of the oil injection nozzle (5) and the sealing member (7) so that the sealing member (7) can naturally close the oil injection nozzle (5). A grease gun (11) is located at the bottom of the inner side of the pillow rod (101) and is used to store grease; And an oil press structure connected to the grease gun (11) to allow the lubricating grease in the grease gun (11) to overflow through multiple oil outlet structures, thereby reducing the relative sliding resistance of the pillow rod frame (1) and the headrest assembly (3).

2. The headrest support assembly as described in claim 1, characterized in that: The oil injection nozzle (5) is provided with an end (9) facing the inner cavity of the pillow rod (101). The two ends of the end (9) are provided with conical holes. The sealing member (7) fits against the conical hole surface of the end (9) to seal the end (9).

3. The headrest support assembly as described in claim 2, characterized in that: The sealing element (7) is a spherical steel ball, and the elastic element (8) is a spring. One end of the spring is located outside the spherical steel ball and pushes the spherical surface of the spherical steel ball to fit against the tapered hole wall of the end (9).

4. The headrest support assembly as described in claim 3, characterized in that: The diameter of the spherical steel ball is smaller than the inner diameter of the oil nozzle (5). A fixing plate (6) is provided on the inner wall of the oil nozzle (5). One end of the spring is connected to the fixing plate (6). A perforation for grease to pass through is provided in the middle of the fixing plate (6).

5. The headrest support assembly as described in claim 1, characterized in that: The inner cavity of the pillow rod (101) is provided with a plurality of fillers (10), and adjacent fillers (10) form an oil storage chamber in the inner cavity of the pillow rod (101). The oil storage chamber corresponds to the position of the oil injection nozzle (5). The middle of the filler (10) has a hole for the flow of lubricating grease.

6. The headrest support assembly as described in claim 5, characterized in that: The oil pressing structure includes a drive rod (12), an oil pressing plate (14), and a seal. The drive rod (12) is rotatably mounted on the bottom of the inner cavity of the pillow rod (101) via a support seat, and the drive rod (12) extends into the grease gun (11). The oil pressing plate (14) is attached to the inner wall of the grease gun (11) and threadedly connected to the drive rod (12). The seal is connected to the drive rod (12) and the grease gun (11). By rotating the drive rod (12), the oil pressing plate (14) slides and squeezes the lubricating grease into the pores of the filler (10) within the grease gun (11).

7. The headrest support assembly as described in claim 6, characterized in that: One end of the pressure plate (14) is connected to a flexible pad (15), which slides against the inner wall of the grease gun (11).

8. The headrest support assembly as described in claim 6, characterized in that: The sealing element includes a sealing bearing (13) and a cover plate (17), the cover plate (17) being connected to the open end of the grease gun (11), and the sealing bearing (13) being connected to the cover plate (17) and the drive rod (12).

9. The headrest support assembly as described in claim 6, characterized in that: The inner wall of the grease gun (11) is provided with a guide strip (16), and the oil pressure plate (14) is slidably connected to the guide strip (16).

10. The headrest support assembly as described in claim 1, characterized in that: The headrest assembly (3) contains multiple felts (18).

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