Quick-release adjustable armrest device of automobile seat

Abstract

The invention relates to an automobile seat quick-release adjustable armrest device which comprises an armrest and a seat back frame, a fixing support used for being connected with the armrest is arranged on the side portion of the seat back frame, a main shaft is arranged on the side, facing the fixing support, of the rear portion of the armrest, and an electromagnet assembly used for attracting and fixing the main shaft and matched with the main shaft in a rotating mode is arranged on the fixing support. The quick-release adjustable armrest device of the automobile seat is simple in structure and easy to install and adapt, stepless adjustment of the armrest can be achieved, good universality and compatibility are achieved, and the comfort level of a user in the automobile during use can be improved.

Description

Technical Field

[0001] This invention relates to the field of automotive seats, and in particular to a quick-release adjustable armrest device for automotive seats. Background Technology

[0002] Car seat armrests are designed to provide elbow support for passengers, improving comfort. Current car seat armrests typically feature a rotating and folding control. To use, the armrest is rotated out; when not in use, it is rotated upwards to fold flat with the seat back. Common armrests use an internal ratchet mechanism for adjustment, offering 5 adjustment positions (7° per tooth). To fold the armrest, it must be returned to its initial position. The armrest is secured by pins that hold the main shaft and base together, which are then bolted or riveted to the seat armrest's sheet metal. However, this method does not allow for arbitrary angle adjustment or quick disassembly. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a quick-release adjustable armrest device for automobile seats, which has a simple structure, is easy to install and adapt, and can realize stepless adjustment of the armrest, thereby improving the comfort of users in the vehicle.

[0004] The present invention is implemented by the following scheme: a quick-release adjustable armrest device for automobile seats, including an armrest and a seat back frame. The side of the seat back frame is provided with a fixed bracket for connecting the armrest. The rear of the armrest is provided with a main shaft facing the fixed bracket. The fixed bracket is provided with an electromagnet assembly for attracting and fixing the main shaft and rotating with the main shaft.

[0005] Furthermore, the electromagnet assembly includes a base, an iron core, and a coil. The base has a connecting hole for the main shaft to extend into and rotate with the main shaft. The side of the base has a through hole that extends through the connecting hole, and one end of the iron core extends into the through hole.

[0006] Furthermore, the base is riveted to the fixed bracket by rivets.

[0007] Furthermore, a damping rubber sleeve is fitted onto the main shaft.

[0008] Furthermore, the armrest includes an armrest plastic component, an armrest lining, and an armrest cover, with the main shaft and the armrest plastic component being an integral structure.

[0009] Furthermore, the spindle is made of steel.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The quick-release adjustable armrest device for car seats of the present invention has a simple structure, is easy to install and adapt, can realize stepless adjustment of the armrest, has good versatility and compatibility, and can improve the comfort of users in the car.

[0011] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through specific embodiments and related drawings. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the handrail structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the electromagnet assembly structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram illustrating the usage state of an embodiment of the present invention; The labels in the diagram are as follows: 1-Armband cover, 2-Armband padding, 3-Armband plastic part, 4-Main shaft, 5-Damping rubber sleeve, 6-Electromagnet assembly, 7-Rivet, 8-Fixing bracket, 9-Electromagnet wiring harness, 10-Coil, 11-Iron core, 12-Body wiring harness, 13-Switch, 14-Base, 15-Connecting hole. Detailed Implementation

[0013] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] like Figures 1-4 As shown, a quick-release adjustable armrest device for a car seat includes an armrest and a seat back frame. The seat back frame has a fixing bracket 8 on its side for connecting the armrest. A main shaft 4 is located on the rear of the armrest facing the fixing bracket 8. The fixing bracket 8 has an electromagnet assembly 6 for attracting and fixing the main shaft and for rotating with the main shaft. This invention's armrest device has a simple structure, is easy to install and adapt, and has good versatility and compatibility, improving the comfort of users in the vehicle.

[0016] In this embodiment, the electromagnet assembly 6 includes a base 14, an iron core 11, and a coil 10. The base has a connecting hole 15 for the main shaft to extend into and rotate with the main shaft. The side of the base has a through hole that extends through the connecting hole. One end of the iron core 11 extends into the through hole.

[0017] The core of the electromagnet assembly 6 is typically made of soft magnetic material. Soft magnetic materials possess low coercivity and high permeability, allowing them to be easily magnetized under electromagnetic fields and rapidly demagnetized after the magnetic field is removed. This material enhances the magnetic field in the electromagnet and is a key component enabling the electromagnet assembly 6 to operate efficiently.

[0018] Common soft magnetic materials include pure iron, silicon steel, permalloy, and ferrite. Each material has its own characteristics. For example, pure iron has a high saturation magnetic induction intensity, while silicon steel is suitable for high-frequency applications due to its high resistivity. Permalloy, with its excellent magnetic properties and machinability, is widely used in precision electromagnetic components. Ferrite is favored for its high resistivity, low cost, and good corrosion resistance. Based on these material characteristics, we chose ferrite as the material for our core 11.

[0019] Ferrite production process flow: (1) Ingredients: According to the performance requirements of the target product, accurately weigh and mix raw materials such as iron oxide (e.g., Fe2O3, with a molar percentage of 50%-70%, the content of which depends on the specific soft magnetic material used to manufacture the magnetic core), strontium (Sr) or barium (Ba) compounds, etc., and add trace additives (e.g., CoO, TiO2, etc.) to improve performance. (2) Ball milling: Add the mixed raw materials into the ball mill, add an appropriate amount of water or solvent (such as the inert organic solvent n-heptane), and use steel balls or zirconia balls to impact and grind the raw materials to make them fully mixed and refined into a slurry. The ball milling time is usually several hours to more than ten hours. (3) Drying: The spray drying method is adopted. The mud is sprayed into the hot air furnace and dried quickly into uniform particles. The particle size is generally about 100μm. (4) Pre-calcination: The dried granules are pre-calcined at 700-900℃ to cause a preliminary solid-phase reaction in the raw materials, forming a crystalline phase with certain magnetic properties. After pre-calcination, the color of the material changes from red to black. (5) Granulation: After pre-calcination, binders (such as PVA glue) and lubricants are added to the material, and particles with a particle size of 60-100μm are made by spray granulation or mechanical granulation process to improve the molding performance; (6) Molding: The granulated material is placed in a mold and formed by dry pressing or wet pressing. Pressure is applied to densify the material. Some ferrites need to be oriented by an external magnetic field during molding. (7) Sintering: The formed green body is sintered at a high temperature of 1100-1400℃, which causes atomic diffusion and solid-phase reaction between particles to form a dense ferrite structure. The sintering atmosphere is selected according to the product type (such as air or nitrogen). (8) Post-processing: After sintering, the products are polished, cut, drilled and other mechanical processes to meet the size and precision requirements. Some products also need to be painted and insulated.

[0020] In this embodiment, the base 14 is riveted to the fixed bracket 8 by rivets 7.

[0021] In this embodiment, a damping rubber sleeve 5 is fitted onto the main shaft 4.

[0022] In this embodiment, the handrail includes a handrail plastic part 3, a handrail lining 2, and a handrail cover 1. The main shaft and the handrail plastic part are an integral structure. The handrail main shaft 4 and the handrail plastic part 3 are integrally molded and then assembled with the handrail lining 2. The handrail lining 2 needs to be at least 15mm thick to meet the foaming requirements. To facilitate the assembly of the handrail, the handrail cover 1 needs to have a zipper sewn on the lower side. Finally, the damping rubber sleeve 5 is fitted onto the handrail main shaft 4.

[0023] In this embodiment, the spindle is made of steel, preferably 40# steel.

[0024] The coil 10 is connected to the electromagnet harness 9, which is connected to the vehicle body harness 12 via the switch 13. Initially, the coil 10 is energized, i.e., the switch 13 is ON. After the coil 10 is energized by connecting the electromagnet harness 9 to the vehicle body harness 12, the coil 10 and the iron core 11 inside the electromagnet assembly 6 become magnetic. Since the main shaft 4 is made of 40# steel (with a circular cross-section), it is attracted and fixed by the electromagnet assembly 6, and the armrest cannot be adjusted.

[0025] When a passenger wants to adjust the armrest angle, they press switch 13 to the OFF position. At this time, no current flows through the electromagnet assembly, so it cannot generate magnetism. The armrest spindle is fixed in the connection hole of the electromagnet assembly via the damping rubber sleeve 5. Due to the friction between the damping rubber sleeve 5 and the wall of the connection hole, the spindle will not easily come out of the connection hole, and the armrest will not rotate up and down due to its own weight. The passenger simply needs to swing the armrest to the desired position and then press switch 13 to the ON position to fix the armrest in place, thus achieving any desired angle. Similarly, to disassemble the armrest, simply press switch 13 to the OFF position, and the spindle, along with the damping rubber sleeve 5, can be pulled out of the connection hole, completing the disassembly.

[0026] Unless otherwise stated, if any of the technical solutions disclosed in this invention specify a numerical range, then the disclosed numerical range is a preferred numerical range. Anyone skilled in the art should understand that the preferred numerical range is merely one among many feasible numerical values ​​that has a more obvious or representative technical effect. Because there are many numerical values, it is impossible to list them all. Therefore, this invention discloses only some numerical values ​​to illustrate the technical solutions of this invention. Furthermore, the numerical values ​​listed above should not constitute a limitation on the scope of protection of this invention.

[0027] If this invention discloses or relates to mutually fixedly connected components or structural parts, then, unless otherwise stated, a fixed connection can be understood as: a detachable fixed connection (e.g., using bolts or screws), or a non-detachable fixed connection (e.g., riveting, welding). Of course, mutually fixed connections can also be replaced by an integral structure (e.g., manufactured in one piece using a casting process) (except where it is obviously impossible to use an integral molding process).

[0028] In addition, unless otherwise stated, the terms used in any of the technical solutions disclosed in this invention to indicate positional relationships or shapes include states or shapes that are similar to, close to, or approximate with those states or shapes.

[0029] Any component provided by this invention can be assembled from multiple individual components or can be a single component manufactured by a one-piece molding process.

[0030] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A quick-release adjustable armrest device for automobile seats, comprising an armrest and a seat back frame, characterized in that: The seat back frame has a fixed bracket on its side for connecting the armrest. The armrest has a main shaft on its rear side facing the fixed bracket. The fixed bracket has an electromagnet assembly for attracting and fixing the main shaft and rotating with the main shaft.

2. The quick-release adjustable armrest device for automobile seats according to claim 1, characterized in that: The electromagnet assembly includes a base, an iron core, and a coil. The base has a connecting hole for the main shaft to extend into and rotate with the main shaft. The side of the base has a through hole that extends through the connecting hole. One end of the iron core extends into the through hole.

3. The quick-release adjustable armrest device for automobile seats according to claim 2, characterized in that: The base is riveted to the fixed bracket by rivets.

4. The quick-release adjustable armrest device for automobile seats according to claim 1, characterized in that: A damping rubber sleeve is fitted onto the main shaft.

5. The quick-release adjustable armrest device for automobile seats according to claim 1, characterized in that: The handrail includes a handrail plastic component, a handrail lining, and a handrail cover, and the main shaft and the handrail plastic component are an integral structure.

6. The quick-release adjustable armrest device for automobile seats according to claim 1, characterized in that: The spindle is made of steel.

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