Oil cylinder assembly for automobile armrest

Abstract

The utility model relates to the technical field of automobile parts, and discloses an oil cylinder assembly for an automobile armrest, which comprises a mounting assembly, an oil cylinder assembly and an armrest body, the mounting assembly comprises a bottom plate, side plates are fixedly mounted on the four side surfaces of the bottom plate, a hydraulic oil tank is fixedly mounted at the center of the surface of the bottom plate, and the hydraulic oil tank is fixedly connected with the oil cylinder assembly. Second fixing bolts are arranged, mounting and dismounting are facilitated, the connecting stability of the cylinder base and the bottom plate is enhanced through the mounting holes, it is ensured that the oil cylinder assembly cannot shake or shift easily in the using process, and the cylinder barrel and the end cover are connected through the first mounting holes and the first fixing bolts; meanwhile, a first sealing ring, a second sealing ring and a third sealing ring are arranged at the connecting position, a multi-sealing structure effectively prevents hydraulic oil leakage, pistons and piston rods are arranged in the two sets of cylinder barrels, and therefore the handrail body can flexibly conduct lifting and other action adjustment under the action of hydraulic oil; the use requirements of drivers and passengers on different heights of the automobile armrest are met, and the riding comfort is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a hydraulic cylinder assembly for automotive armrests. Background Technology

[0002] Car armrests are important components in automotive interiors, combining functionality and comfort. Functionally, they provide support for the arms of drivers and passengers, relieving fatigue from long drives or rides. In terms of comfort design, they often adopt ergonomic shapes that conform to the natural curve of the arm. In terms of location, car armrests mainly include front seat armrests, rear seat armrests, and center armrests. Front seat armrests are usually installed on the outside of the seats or on the doors, rear armrests can be folded and stored in the seat back, and the center armrest is located in the middle of the front seats, serving both storage and arm support functions. The design details of armrests in different locations will be emphasized according to the usage scenario to better meet the needs of drivers and passengers.

[0003] Existing car armrests are often equipped with hydraulic cylinder assemblies to achieve functions such as lifting and adjusting the armrest. However, the hydraulic cylinder assemblies for car armrests on the market generally have some problems: First, the sealing performance is poor, and the hydraulic oil inside the cylinder is prone to leakage, which not only affects the normal operation of the cylinder, but may also cause pollution to the car interior. Second, the structural design is unreasonable. During frequent extension and retraction adjustments, the stability of the hydraulic cylinder assembly is poor and it is prone to shaking, resulting in inaccurate armrest adjustment and affecting the user experience. Therefore, we propose a hydraulic cylinder assembly for car armrests. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a hydraulic cylinder assembly for automotive armrests, solving several common problems found in current automotive armrest hydraulic cylinder assemblies on the market: Firstly, poor sealing performance, leading to easy leakage of hydraulic oil inside the cylinder, which not only affects the normal operation of the cylinder but may also contaminate the automotive interior. Secondly, unreasonable structural design, resulting in poor stability of the hydraulic cylinder assembly during frequent extension and retraction adjustments, causing it to wobble and leading to inaccurate armrest adjustments, thus affecting the user experience.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic cylinder assembly for an automotive armrest, comprising a mounting assembly, a hydraulic cylinder assembly, and an armrest body. The armrest body is disposed on the top of the hydraulic cylinder assembly. The hydraulic cylinder assembly comprises two sets, each mounted on one end of the mounting assembly. The mounting assembly comprises a base plate, on which side plates are fixedly mounted on all four sides. A hydraulic oil tank is fixedly mounted at the center of the base plate. The hydraulic cylinder assembly comprises two sets of cylinder seats fixedly mounted on both ends of the base plate surface, with cylinder barrels fixedly mounted on the surfaces of both sets of cylinder seats.

[0008] Furthermore, the surface of the cylinder seat is provided with a number of second mounting holes arranged in a circumferential array, and the cylinder seat is fixedly connected to the base plate by multiple sets of second fixing bolts passing through multiple sets of second mounting holes.

[0009] Furthermore, an end cap is fixedly installed on the top of the cylinder, and a number of first mounting holes arranged in a circumferential array are opened on the surface of the cylinder. The cylinder is fixedly connected to the end cap by multiple sets of first fixing bolts, and a locking seat is fixedly installed on the top of the end cap.

[0010] Furthermore, a second sealing ring is fixedly installed on the top of the cylinder, and a first sealing ring and a third sealing ring are fixedly installed on the circumferential surface of the end cap and at the connection with the cylinder.

[0011] Furthermore, an oil injection hole is provided on one side surface of the end cap, and oil pipes are fixedly connected to the bottom ends of both sides of the hydraulic oil tank, with the end of the oil pipe away from the hydraulic oil tank being fixedly installed inside the oil injection hole.

[0012] Furthermore, pistons are fixedly installed inside both sets of cylinders, and piston rods are provided at the output ends of both sets of pistons, with the piston rods passing through the end caps.

[0013] Furthermore, the armrest body is fixedly installed on the top of the two sets of piston rods, and a spiral heat dissipation groove is formed on the circumferential surface of the cylinder.

[0014] (III) Beneficial Effects

[0015] This utility model provides a hydraulic cylinder assembly for automotive armrests, which has the following beneficial effects:

[0016] 1. By setting up a hydraulic cylinder assembly, the cylinder seat is connected to the base plate through the second mounting hole and the second fixing bolt, which facilitates installation and disassembly. The circumferentially distributed mounting holes enhance the stability of the connection between the cylinder seat and the base plate, ensuring that the hydraulic cylinder assembly will not easily shake or shift during use. The cylinder barrel and the end cover are connected through the first mounting hole and the first fixing bolt. At the same time, a first sealing ring, a second sealing ring, and a third sealing ring are set at the connection. The multiple sealing structure effectively prevents hydraulic oil leakage. The piston and piston rod in the two sets of cylinder barrels allow the armrest body to flexibly adjust its height and other movements under the action of hydraulic oil. Compared with the single cylinder, the dual-cylinder structure can provide more balanced and stable support force, meet the needs of drivers and passengers for different heights of the car armrest, and improve riding comfort.

[0017] 2. By setting up the installation components, the end cap is opened with an oil filling hole, which is connected to the hydraulic oil tank through an oil pipe. This connection method makes the injection and circulation of hydraulic oil more convenient and smooth, and can replenish hydraulic oil to the cylinder assembly in a timely manner, maintain the stability of the system pressure, and ensure that the handrail body can smoothly perform adjustment actions such as lifting and lowering. The cylinder barrel is opened with spiral heat dissipation grooves on its circumferential surface, which increases the heat dissipation area of ​​the cylinder barrel and can effectively dissipate the heat generated during the operation of the cylinder, prevent the hydraulic oil from degrading due to excessive temperature, ensure that the cylinder assembly works in a suitable temperature environment, and improve the overall stability and reliability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the hydraulic cylinder assembly structure in this utility model;

[0021] Figure 4 This is a schematic diagram of the unfolded structure of the hydraulic cylinder assembly in this utility model;

[0022] Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Mounting assembly; 2. Hydraulic cylinder assembly; 3. Handrail body; 101. Base plate; 102. Side plate; 103. Hydraulic oil tank; 104. Oil pipe; 201. Cylinder seat; 202. Cylinder barrel; 203. End cap; 204. Spiral heat dissipation groove; 205. Piston; 206. Piston rod; 207. Locking seat; 208. First sealing ring; 209. Second sealing ring; 210. First mounting hole; 211. Third sealing ring; 212. Oil filling hole; 213. Second mounting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a hydraulic cylinder assembly for an automotive armrest, including a mounting assembly 1, a hydraulic cylinder assembly 2, and an armrest body 3. The armrest body 3 is disposed on the top of the hydraulic cylinder assembly 2. The hydraulic cylinder assembly 2 is provided with two sets and is respectively installed at both ends of the interior of the mounting assembly 1. The mounting assembly 1 includes a base plate 101, and side plates 102 are fixedly installed on all four sides of the base plate 101. A hydraulic oil tank 103 is fixedly installed at the center of the surface of the base plate 101. The hydraulic cylinder assembly 2 includes two sets of cylinder seats 201 fixedly installed at both ends of the surface of the base plate 101. A cylinder barrel 202 is fixedly installed on the surface of both sets of cylinder seats 201. The base plate 101 and the side plates 102 of the mounting assembly 1 form a stable frame, providing a reliable installation foundation for the hydraulic cylinder assembly 2 and the armrest body 3. The hydraulic oil tank 103 is integrated in the center of the base plate 101, shortening the oil circuit length, reducing pressure loss, and facilitating centralized management of hydraulic oil.

[0026] The cylinder seat 201 has several second mounting holes 213 arranged in a circumferential array on its surface. The cylinder seat 201 is fixedly connected to the base plate 101 by multiple sets of second fixing bolts passing through the multiple sets of second mounting holes 213. An end cap 203 is fixedly installed on the top of the cylinder barrel 202. The cylinder barrel 202 has several first mounting holes 210 arranged in a circumferential array on its surface. The cylinder barrel 202 is fixedly connected to the end cap 203 by multiple sets of first fixing bolts. A locking seat 207 is fixedly installed on the top of the end cap 203. The second mounting holes 213 arranged in a circumferential array on the surface of the cylinder seat 201 cooperate with the second fixing bolts to make the connection between the cylinder seat 201 and the base plate 101 uniformly stressed, enhance the overall structure's vibration resistance, and facilitate the disassembly and maintenance of the hydraulic cylinder assembly 2. The end cap 203 on the top of the cylinder barrel 202 is fastened through the first mounting holes 210 and the first fixing bolts. The locking seat 207 on the top can be connected to external equipment to guide and limit the piston rod 206, ensuring its movement accuracy and improving the stability of the handle adjustment.

[0027] A second sealing ring 209 is fixedly installed on the top of the cylinder 202. A first sealing ring 208 and a third sealing ring 211 are fixedly installed on the circumferential surface of the end cover 203 and at the connection with the cylinder 202. An oil filling hole 212 is opened on one side surface of the end cover 203. Oil pipes 104 are fixedly connected to the bottom of both sides of the hydraulic oil tank 103. The end of the oil pipe 104 away from the hydraulic oil tank 103 is fixedly installed inside the oil filling hole 212. The second sealing ring 209 on the top of the cylinder 202, together with the first sealing ring 208 and the third sealing ring 211 on the circumference of the end cover 203, form a triple sealing line, which effectively prevents hydraulic oil leakage and isolates dust and impurities.

[0028] Both sets of cylinders 202 have pistons 205 fixedly installed inside. Both sets of pistons 205 have piston rods 206 at their output ends, and the piston rods 206 pass through the end caps 203. The handrail body 3 is fixedly installed on the top of the two sets of piston rods 206. Spiral heat dissipation grooves 204 are opened on the circumferential surface of the cylinder 202. The handrail body 3 is fixed on the top of the two sets of piston rods 206, and the force is balanced. The spiral heat dissipation grooves 204 on the circumference of the cylinder 202 increase the heat dissipation area, quickly dissipate the working heat of the cylinder, prevent the hydraulic oil from deteriorating at high temperature, and ensure the stable operation of the components.

[0029] The detailed description of known functions and components is omitted in this disclosure. To ensure the compatibility of the equipment, the operating methods used are consistent with the parameters of commercially available instruments.

[0030] In summary, the operating steps of this hydraulic cylinder assembly for automotive handrails are as follows;

[0031] When the hydraulic cylinder assembly of the car handrail is working, the car's hydraulic system issues a command, and hydraulic oil flows from the hydraulic oil tank 103 through the oil pipe 104 into the oil filling hole 212 of the end cap 203, and then enters the rod chamber or rodless chamber of the two sets of cylinders 202 through the first oil port or the second oil port. The hydraulic oil entering the rod chamber pushes the piston 205 to move towards the rodless chamber, causing the piston rod 206 to retract. The hydraulic oil entering the rodless chamber pushes the piston rod 206 to move towards the rod chamber, causing the piston rod 206 to extend. The synchronous extension and retraction of the two sets of piston rods 206 drives the handrail body 3, which is fixedly installed on its top, to move forward. During the height adjustment process, the cylinder seat 201 is securely mounted on the base plate 101 through the second mounting hole 213 and the second fixing bolt, ensuring that the hydraulic cylinder assembly 2 is stable and does not shake. The cylinder barrel 202 and the end cover 203 are connected through the first mounting hole 210 and the first fixing bolt, and the first sealing ring 208, the second sealing ring 209 and the third sealing ring 211 are used to prevent hydraulic oil leakage. At the same time, the spiral heat dissipation grooves 204 on the circumferential surface of the cylinder barrel 202 dissipate the heat generated during operation in a timely manner, ensuring that the hydraulic cylinder assembly 2 operates stably at a suitable temperature. At this point, the entire process is completed.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder assembly for an automotive armrest, comprising a mounting assembly (1), a hydraulic cylinder assembly (2), and an armrest body (3), wherein the armrest body (3) is disposed on the top of the hydraulic cylinder assembly (2), and the hydraulic cylinder assembly (2) comprises two sets, which are respectively installed at both ends inside the mounting assembly (1), characterized in that: The mounting assembly (1) includes a base plate (101), and side plates (102) are fixedly mounted on all four sides of the base plate (101). A hydraulic oil tank (103) is fixedly mounted at the center of the surface of the base plate (101). The cylinder assembly (2) includes two sets of cylinder seats (201) fixedly mounted at both ends of the surface of the base plate (101). A cylinder barrel (202) is fixedly mounted on the surface of both sets of cylinder seats (201).

2. The hydraulic cylinder assembly for an automotive armrest according to claim 1, characterized in that: The cylinder seat (201) has several second mounting holes (213) arranged in a circular array on its surface. The cylinder seat (201) is fixedly connected to the base plate (101) by multiple sets of second fixing bolts passing through multiple sets of second mounting holes (213).

3. A hydraulic cylinder assembly for an automotive armrest according to claim 2, characterized in that: An end cap (203) is fixedly installed on the top of the cylinder (202). Several first mounting holes (210) are opened on the surface of the cylinder (202) in a circumferential array. The cylinder (202) is fixedly connected to the end cap (203) by multiple sets of first fixing bolts. A locking seat (207) is fixedly installed on the top of the end cap (203).

4. A hydraulic cylinder assembly for an automotive armrest according to claim 3, characterized in that: A second sealing ring (209) is fixedly installed on the top of the inside of the cylinder (202), and a first sealing ring (208) and a third sealing ring (211) are fixedly installed at the connection between the circumferential surface of the end cap (203) and the cylinder (202).

5. A hydraulic cylinder assembly for an automotive armrest according to claim 4, characterized in that: An oil injection hole (212) is provided on one side surface of the end cap (203). Oil pipes (104) are fixedly connected to the bottom ends of both sides of the hydraulic oil tank (103). The end of the oil pipe (104) away from the hydraulic oil tank (103) is fixedly installed inside the oil injection hole (212).

6. A hydraulic cylinder assembly for an automotive armrest according to claim 5, characterized in that: Both sets of cylinders (202) have pistons (205) fixedly installed inside them. Both sets of pistons (205) have piston rods (206) at their output ends, and the piston rods (206) pass through the end caps (203).

7. A hydraulic cylinder assembly for an automotive armrest according to claim 1, characterized in that: The armrest body (3) is fixedly installed on the top of the two sets of piston rods (206), and a spiral heat dissipation groove (204) is provided on the circumferential surface of the cylinder (202).

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