Reducing coil spring steel wire
By introducing a central cylinder, positioning mechanism, and auxiliary mechanism into the variable diameter coiled spring steel wire, the problem of the spring steel wire shifting off-center under stress is solved, improving the comfort and durability of the seat cushion.
Patent Information
- Application Number
- CN202520119593.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-20
AI Technical Summary
Existing variable diameter coiled spring steel wire is prone to shifting off-center when under stress, causing deformation of the spring steel wire and affecting the comfort of the seat cushion.
It adopts a design with a central cylinder, positioning mechanism and auxiliary mechanism, including convex column, ball, groove, threaded groove and bolt structure, to position and prevent spring steel wire from deviating, and improve wear resistance and waterproofness through wear-resistant layer and waterproof layer.
It effectively prevents the spring steel wire from shifting off the center position when compressed, improves the comfort of the seat cushion, extends its service life, and prevents rust and damage.
Smart Images
Figure CN223549691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spring technology, and in particular to variable diameter coiled spring steel wire. Background Technology
[0002] A spring is a mechanical part that works by utilizing elasticity. Made of elastic material, it deforms under external force and returns to its original shape after the force is removed. Also called a "spring," it is generally made of spring steel. Springs come in a wide variety of types. According to shape, they mainly include helical springs, spiral springs, leaf springs, and irregularly shaped springs. According to the nature of the force applied, springs can be divided into tension springs, compression springs, torsion springs, and bending springs. According to shape, they can be divided into disc springs, ring springs, leaf springs, helical springs, truncated spiral springs, and torsion bar springs. According to the manufacturing process, they can be divided into cold-coiled springs and hot-coiled springs.
[0003] The materials used to manufacture springs should generally have high elastic limit, fatigue limit, impact toughness, and good heat treatment properties. Commonly used materials include carbon spring steel, alloy spring steel, stainless spring steel, as well as copper alloys, nickel alloys, and rubber. In the automotive seat industry, variable diameter coiled spring steel wire with the same spring diameter is generally used as the seat cushion spring.
[0004] The above-mentioned device has the following defects. However, when the variable diameter coiled spring steel wire with the same spring diameter is subjected to force, due to the difference in spring diameter, the compressed spring steel wire is prone to deviate from the center position, causing the spring steel wire to deform and affecting the comfort of the seat cushion. Therefore, variable diameter coiled spring steel wire is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides variable diameter coiled spring steel wire, which aims to improve the problem in the prior art where the compressed spring steel wire is prone to deviating from the center position, causing the spring steel wire to deform and affecting the comfort of the seat cushion.
[0006] To achieve the above objectives, this utility model adopts the following technical solution: a variable diameter coiled spring steel wire, including a central cylinder, a spring base fixedly connected to the bottom outer wall of the central cylinder, a variable diameter coiled spring steel wire body clamped to the top inner wall of the spring base, a positioning mechanism provided on the central cylinder for positioning and preventing deviation of the spring steel wire, an auxiliary mechanism provided on the variable diameter coiled spring steel wire body for blocking moisture, the positioning mechanism including a convex column, the convex column being slidably connected to the inner side wall of the central cylinder, a slot being formed on the top inner wall of the spring base, a positioning groove being formed on the inner side wall of the central cylinder, ball bearings being rotatably connected to the inner walls of both sides of the convex column, a groove being formed on the top inner wall of the convex column, a threaded groove being formed on the inner side wall of the central cylinder, and a bolt being threadedly connected to the inner side wall of the threaded groove.
[0007] As a further description of the above technical solution: the auxiliary mechanism includes a wear-resistant layer, which is fixedly connected to the outer side wall of the variable diameter coiled spring steel wire body. A waterproof layer is fixedly connected to the inner side wall of the variable diameter coiled spring steel wire body, and the spring steel wire body is fixedly connected to the inner wall of the waterproof layer on the side away from the wear-resistant layer.
[0008] As a further description of the above technical solution: there are two slots, which are engaged at both ends of the variable diameter coiled spring steel wire body, and the two slots are respectively opened on the inner side wall of the spring base and the top plate.
[0009] As a further description of the above technical solution: the convex column is slidably connected to the inner walls of both sides of the positioning groove, and the ball is slidably connected to the inner wall of one side of the positioning groove.
[0010] As a further description of the above technical solution: a turntable is fixedly connected to the end of the bolt away from the central cylinder, and an indicator mark is provided on one side of the outer wall of the turntable.
[0011] As a further description of the above technical solution: the thickness of the wear-resistant layer is three millimeters.
[0012] As a further description of the above technical solution: the thickness of the waterproof layer is two millimeters.
[0013] As a further description of the above technical solution: the outer side walls of the spring base and the top plate are respectively provided with arc groove surfaces.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, by setting up structures such as convex columns, ball bearings, and slots, the two ends of the variable diameter coiled spring steel wire are telescopically positioned, and the center is prevented from deforming and misaligning during telescopic movement. This improves the problem that the spring steel wire is prone to deviating from the center position after compression, which causes the spring steel wire to deform and affects the comfort of the seat cushion.
[0016] 2. In this utility model, by setting up wear-resistant layers, waterproof layers and other structures, the variable diameter coiled spring steel wire is wrapped in waterproof and wear-resistant material for a long time. This improves the problem that the variable diameter coiled spring steel wire is easily damaged by sweat or other objects under the car seat cushion, which can cause rust and breakage and affect the elasticity of the seat cushion. Attached Figure Description
[0017] Figure 1 This is a split front view diagram of the variable diameter coiled spring steel wire proposed in this utility model;
[0018] Figure 2 This is a cross-sectional view of the variable diameter coiled spring steel wire proposed in this utility model. Figure 1 ;
[0019] Figure 3 This is a cross-sectional view of the variable diameter coiled spring steel wire proposed in this utility model. Figure 2 ;
[0020] Figure 4 This is a schematic diagram of the auxiliary mechanism for the variable diameter coiled spring steel wire proposed in this utility model.
[0021] Legend:
[0022] 1. Center cylinder; 2. Spring base; 3. Variable diameter coil spring steel wire body; 4. Arc groove surface; 6. Positioning mechanism; 60. Convex column; 61. Slot; 62. Positioning groove; 63. Ball bearing; 64. Groove; 65. Threaded groove; 66. Top plate; 67. Bolt; 68. Turntable; 7. Auxiliary mechanism; 71. Wear-resistant layer; 72. Waterproof layer; 73. Spring steel wire body. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figures 1-3 This utility model provides an embodiment of a variable diameter coiled spring steel wire, comprising a central cylinder 1, a spring base 2 fixedly connected to the bottom outer wall of the central cylinder 1, and a variable diameter coiled spring steel wire body 3 clamped to the top inner wall of the spring base 2. A positioning mechanism 6 is provided on the central cylinder 1 for positioning and preventing deviation of the spring steel wire. An auxiliary mechanism 7 is provided on the variable diameter coiled spring steel wire body 3 for blocking moisture. The positioning mechanism 6 includes a convex post 60, which is slidably connected to the inner side wall of the central cylinder 1. A slot 61 is provided on the top inner wall of the spring base 2, allowing the variable diameter coiled spring steel wire to be positioned. The two ends of the spring steel wire body 3 are clamped to reduce displacement at both ends. The inner side wall of the central cylinder 1 is provided with a positioning groove 62. The top plate 66 is fixed by the positioning groove 62 to prevent the spring from shifting when the spring steel wire extends or retracts. The inner side walls of the convex column 60 are rotatably connected with ball bearings 63. The ball bearings 63 reduce the sliding friction between the convex column 60 and the positioning groove 62. The inner top wall of the convex column 60 is provided with a groove 64. The inner side wall of the central cylinder 1 is provided with a threaded groove 65. The inner side wall of the threaded groove 65 is threaded with a bolt 67. The bolt 67 and the threaded groove 65 cooperate with each other to prevent the convex column 60 from falling off and to facilitate separation and replacement.
[0025] Reference Figures 2-4 There are two slots 61, which are engaged at both ends of the variable diameter coil spring steel wire body 3. The two slots 61 are respectively opened on the inner side walls of the spring base 2 and the top plate 66. The convex column 60 is slidably connected to the inner side walls of the positioning groove 62. The ball 63 is slidably connected to the inner side wall of the positioning groove 62. The end of the bolt 67 away from the central cylinder 1 is fixedly connected to the turntable 68. The bolt 67 is disassembled and adjusted by setting the turntable 68. An indicator mark is set on the outer side wall of the turntable 68 to indicate the operation method. The outer side walls of the spring base 2 and the top plate 66 are respectively provided with arc groove surfaces 4.
[0026] Reference Figures 3-4 The auxiliary mechanism 7 includes a wear-resistant layer 71, which is fixedly connected to the outer side wall of the variable diameter coil spring steel wire body 3. A waterproof layer 72 is fixedly connected to the inner side wall of the variable diameter coil spring steel wire body 3. The waterproof layer 72 is made of galvanized steel, which is made by galvanizing ordinary carbon steel. It has good corrosion resistance and mechanical properties. It can effectively reduce the oxidation and dirt generation of the spring, thereby extending its service life. The inner wall of the waterproof layer 72 away from the wear-resistant layer 71 is fixedly connected to the spring steel wire body 73. The wear-resistant layer 71 is 3 mm thick and is made of 65Mn steel, which has high elasticity and wear resistance. Its surface hardness is high and it can withstand wear and friction. The waterproof layer 72 is 2 mm thick.
[0027] Working principle: When the car seat cushion is pressed down, the top plate 66 is squeezed, causing the variable diameter coiled spring steel wire body 3 in the compression groove 61 to sink. At the same time, the convex post 60 sinks and moves down with the positioning groove 62 of the center cylinder 1, making it difficult for the two ends of the variable diameter coiled spring steel wire body 3 to twist, stretch, or deform. Meanwhile, the ball bearings 63 slide and connect the convex post 60 in the positioning groove 62, reducing the wear of the convex post 60. After long-term use, the cost of replacing the entire variable diameter coiled spring steel wire body 3 is affected. By rotating the turntable 68, the bolt 67 is rotated. The bolt 67 rotates and separates from the threaded groove 65, allowing the bolt 67 to be pulled out from the groove 64. Then, the convex post 60 is lifted to separate from the center cylinder 1, causing the two ends of the variable diameter coiled spring steel wire body 3 to disengage from the groove 61, allowing the variable diameter coiled spring steel wire body 3 to be replaced and installed.
[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 variable diameter coiled spring steel wire, comprising a central cylinder (1), characterized in that: A spring base (2) is fixedly connected to the bottom outer wall of the central cylinder (1). A variable diameter coil spring steel wire body (3) is snapped onto the top inner wall of the spring base (2). A positioning mechanism (6) is provided on the central cylinder (1). The positioning mechanism (6) is used to position the spring steel wire to prevent deviation. An auxiliary mechanism (7) is provided on the variable diameter coil spring steel wire body (3). The auxiliary mechanism (7) is used to block moisture. The positioning mechanism (6) includes a convex column (60). (60) Sliding connection to the inner side wall of the central cylinder (1), the top inner wall of the spring base (2) is provided with a slot (61), the inner side wall of the central cylinder (1) is provided with a positioning slot (62), the inner side walls of the convex column (60) are rotatably connected with ball bearings (63), the top inner wall of the convex column (60) is provided with a groove (64), the inner side wall of the central cylinder (1) is provided with a threaded groove (65), and the inner side wall of the threaded groove (65) is threadedly connected with a bolt (67).
2. The variable diameter coiled spring steel wire according to claim 1, characterized in that: The auxiliary mechanism (7) includes a wear-resistant layer (71), which is fixedly connected to the outer side wall of the variable diameter coil spring steel wire body (3). A waterproof layer (72) is fixedly connected to the inner side wall of the variable diameter coil spring steel wire body (3). A spring steel wire body (73) is fixedly connected to the inner side wall of the waterproof layer (72) away from the wear-resistant layer (71).
3. The variable diameter coiled spring steel wire according to claim 1, characterized in that: There are two slots (61), which are engaged at both ends of the variable diameter coil spring steel wire body (3). The two slots (61) are respectively opened on the inner side wall of the spring base (2) and the top plate (66).
4. The variable diameter coiled spring steel wire according to claim 1, characterized in that: The convex column (60) is slidably connected to the inner walls of both sides of the positioning groove (62), and the ball (63) is slidably connected to the inner wall of one side of the positioning groove (62).
5. The variable diameter coiled spring steel wire according to claim 1, characterized in that: The bolt (67) is fixedly connected to a turntable (68) at the end away from the central cylinder (1), and an indicator mark is provided on one side of the outer wall of the turntable (68).
6. The variable diameter coiled spring steel wire according to claim 2, characterized in that: The wear-resistant layer (71) has a thickness of three millimeters.
7. The variable diameter coiled spring steel wire according to claim 2, characterized in that: The thickness of the waterproof layer (72) is two millimeters.
8. The variable diameter coiled spring steel wire according to claim 1, characterized in that: The outer side walls of the spring base (2) and the top plate (66) are respectively provided with arc groove surfaces (4).