Variable-cross-section anti-deformation long-service-life compression spring

Abstract

The utility model discloses a variable-cross-section anti-deformation long-life compression spring which comprises a square support and a spring piece installed on the back face of the square support, and the spring piece is composed of a first spiral spring and a second spiral spring which are different in spiral turn pitch. A U-shaped hook and an L-shaped hook are integrally formed at the ends, away from each other, of the second spiral spring and the first spiral spring respectively, the second spiral spring is clamped and embedded with the top end of the square support through the U-shaped hook, and a front blocking disc is arranged at the end, away from the square support, of the first spiral spring. The elastic restoring force of the first spiral spring and the second spiral spring forces the inner shaft rod to rotate and reset to an initial angle, so that the structural design of the spiral springs can also realize a shaft body reset mechanism similar to that of a torsion spring.

Description

Technical Field

[0001] The utility model relates to the technical field of compression springs, in particular to a deformation-resistant and long-life compression spring with variable cross-sections. Background Art

[0002] A long-life compression spring with a variable cross-section and an anti-deformation property is a spring with a special design, and its structure mainly consists of a spring body, a variable cross-section design, and an end portion. The spring body is usually made of high-strength metal materials, and the variable cross-section design is different from the traditional circular cross-section. It can be achieved by means of diameters at different parts, grooves or protrusions on the circumference, etc., thereby enhancing the spring's load-bearing capacity and service life, and providing a more uniform and controllable stress distribution; such as a long-life compression spring with a variable cross-section and an anti-deformation property disclosed in the authorization announcement number CN215762982U, comprising a mounting part and a spring body, a spring body is arranged between two groups of the mounting parts, and a plurality of clamping structures are arranged on the outer wall surfaces of the two groups of the mounting parts, and a reinforcement layer is provided on the surface of the spring body, and the reinforcement layer is provided on the outer wall surface of the spring body. The surface of the solid layer is covered with a waterproof layer, the surface of the waterproof layer is covered with a heat insulation layer, the surface of the heat insulation layer is covered with a corrosion-resistant layer, and the surface of the corrosion-resistant layer is covered with a wear-resistant layer. By setting a clamping structure, etc., the problem that the rubber sleeve cannot be deformed synchronously with the expansion and contraction of the spring is effectively avoided. However, this technical solution also adopts a price form similar to that of a coil spring, which can only perform radial compression. It is very effective in the application of compression or tension directions. In some scenarios where shaft and rod parts need to self-reset, it is difficult to realize the rotational reset function of the shaft parts, that is, the design of the coil spring is not conducive to realizing such a self-reset mechanism. Utility Model Content

[0003] The utility model aims to provide a long-life compression spring with a variable cross-section and an anti-deformation property. The spring member is composed of a first coil spring and a second coil spring with successively increasing spiral turn pitches, and an L-shaped hook and a U-shaped hook are respectively formed at both ends of the spring member for buckling with a square support and a front baffle, so that the shaft body can be self-reset by the spring member after rotation, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a long-life, anti-deformation compression spring with a variable cross-section, comprising a square support and a spring component installed on the back of the square support, the spring component consisting of a first coil spring and a second coil spring with two sections of different spiral turn pitches, the second coil spring and the first coil spring are respectively integrally formed with a U-shaped hook and an L-shaped hook at one end away from each other, the second coil spring is clamped with the top end of the square support through the U-shaped hook, a front baffle is provided at the end of the first coil spring away from the square support, the first coil spring is clamped with one side outer wall of the front baffle through the L-shaped hook, an inner shaft rod is fixed on the outer wall of the front baffle plate on the side close to the first coil spring, and one end of the inner shaft rod passes through the outside of the square support.

[0005] Preferably, a rectangular undercut groove for the U-shaped hook to be embedded in is formed on the top of the square support, and a notch for the U-shaped hook to be embedded in is formed on the outer wall of the front baffle.

[0006] Preferably, completely penetrating internal threaded holes are provided at the corners of the surface of the square support, and the square support is made of a component made of alloy steel.

[0007] Preferably, a through hole is provided at the center position inside the front baffle, and the diameter of the through hole is smaller than the outer diameter of the inner shaft.

[0008] Preferably, an axial hole is provided on the outer wall of the square support on the side away from the second coil spring, a bearing monomer is installed inside the axial hole, and one end of the inner shaft rod passes through the inner ring of the bearing monomer.

[0009] Preferably, the helical turn pitch of the first helical spring is smaller than the helical turn pitch of the second helical spring.

[0010] Compared with the prior art, the beneficial effect of the utility model is that: this kind of deformation-resistant and long-life compression spring with variable cross-section is provided with a square support and a first coil spring and other structures that cooperate with each other. The ends of the first coil spring and the second coil spring are respectively embedded in the square support and the front baffle, and the elastic restoring force of the first coil spring and the second coil spring will force the inner shaft rod to rotate and reset to the initial angle. In this process, the first coil spring and the second coil spring provide reliable mechanical support and can accurately control the shaft reset position, so that the structural design of the coil spring can also realize a shaft reset mechanism similar to a torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 It is a side view structural schematic diagram of the utility model;

[0013] Figure 3 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 4 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 3 ;

[0016] In the figure: 1, square support; 101, internal threaded hole; 102, rectangular undercut; 2, first coil spring; 201, L-shaped hook; 3, second coil spring; 301, U-shaped hook; 4, shaft hole; 5, front baffle; 501, through hole; 502, notch; 6, inner shaft; 7, bearing monomer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-5 The utility model provides an embodiment: a long-life compression spring with variable cross-section and anti-deformation, comprising a square support 1 and a spring member installed on the back of the square support 1, the spring member consisting of a first coil spring 2 and a second coil spring 3 with two sections of different spiral turn pitches, the second coil spring 3 and the first coil spring 2 are respectively integrally formed with a U-shaped hook 301 and an L-shaped hook 201 at the ends away from each other, the second coil spring 3 is clamped with the top of the square support 1 through the U-shaped hook 301, the first coil spring 2 is provided with a front baffle 5 at the end away from the square support 1, the first coil spring 2 is mutually clamped with the outer wall of one side of the front baffle 5 through the L-shaped hook 201, the second coil spring 3 usually provides higher stiffness and support force in the initial stage of shaft rotation, and the first coil spring 2 provides greater resistance after the second coil spring 3 is deformed;

[0019] An inner shaft rod 6 is fixed on the outer wall of the front baffle plate 5 near the first coil spring 2, one end of the inner shaft rod 6 penetrates the outside of the square support 1, and a through hole 501 is provided at the center position inside the front baffle plate 5, and the diameter of the through hole 501 is smaller than the outer diameter of the inner shaft rod 6;

[0020] The top of the square support 1 is provided with a rectangular lower cut groove 102 for the U-shaped hook 301 to be embedded in, and the outer wall of the front baffle 5 is provided with a notch 502 for the L-shaped hook 201 to be embedded in. The U-shaped hook 301 is engaged with the rectangular lower cut groove 102 at the top of the square support 1, and the L-shaped hook 201 is engaged with the notch 502 on the outer wall of the front baffle 5, so that the square support 1, the second coil spring 3, the first coil spring 2, and the front baffle 5 can be firmly fixed together, so as to realize the self-reset function of the shaft or rod body component.

[0021] A completely penetrating internal thread hole 101 is provided at the corner position of the surface of the square support 1. The square support 1 is made of a member made of alloy steel. During the installation process, the square support 1 can be fixed to the base plane by means of the internal thread hole 101 and bolts;

[0022] The helical turn pitch of the first coil spring 2 is smaller than the helical turn pitch of the second coil spring 3. Since the helical turn pitch of the first coil spring 2 is smaller than the helical turn pitch of the second coil spring 3, the stiffness and compression force response of the spring can be effectively adjusted by increasing the helical turn pitch. Moreover, by combining two springs with different rotational torsion parameters, more complex mechanical properties can be achieved, such as providing different compression and rebound properties under different force conditions.

[0023] An axial hole 4 is provided on the outer wall of the square support 1 on the side away from the second coil spring 3, and a bearing monomer 7 is installed inside the axial hole 4. One end of the inner shaft rod 6 passes through the inner ring of the bearing monomer 7. During the rotation of the inner shaft rod 6, the bearing monomer 7 improves the rotation stability of the inner shaft rod 6, thereby ensuring that the second coil spring 3 and the first coil spring 2 are stably stressed.

[0024] When the embodiment of the present application is in use, the staff first connects the external shaft to be used to one end of the inner shaft rod 6 by welding, bolting, etc., and fixes the square support 1 to the base plane. When the shaft is driven to rotate by external power, the shaft drives the inner shaft rod 6, the front baffle plate 5 and one end of the first coil spring 2 to rotate. Since one end of the first coil spring 2 is embedded in the outer wall of the front baffle plate 5 through the L-shaped hook 201, and one end of the second coil spring 3 is embedded in the square support 1 through the U-shaped hook 301, the shaft needs to overcome the elastic restoring force of the first coil spring 2 and the second coil spring 3 in this process, and this elastic restoring force gradually increases with the increase of the rotation angle of the shaft and the inner shaft rod 6. When the driving force of the inner shaft rod 6 disappears, the elastic restoring force of the first coil spring 2 and the second coil spring 3 will force the inner shaft rod 6 to rotate and reset to the initial angle. In this process, the first coil spring 2 and the second coil spring 3 provide reliable mechanical support, which can accurately control the reset position of the shaft, so that the structural design of the coil spring can also realize a shaft reset mechanism similar to that of a torsion spring.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A variable cross-section anti-deformation long-life compression spring, characterized in that: The invention comprises a square support (1) and a spring component mounted on the back of the square support (1), wherein the spring component comprises a first coil spring (2) and a second coil spring (3) having two sections of different spiral turn pitches, wherein the ends of the second coil spring (3) and the first coil spring (2) which are away from each other are respectively integrally formed with a U-shaped hook (301) and an L-shaped hook (201), wherein the second coil spring (3) is engaged with the top end of the square support (1) via the U-shaped hook (301), wherein a front baffle (5) is arranged at the end of the first coil spring (2) away from the square support (1), wherein the first coil spring (2) is engaged with the outer wall of one side of the front baffle (5) via the L-shaped hook (201), wherein an inner shaft rod (6) is fixed to the outer wall of the side of the front baffle (5) close to the first coil spring (2), wherein one end of the inner shaft rod (6) penetrates the outside of the square support (1).

2. The variable cross-section anti-deformation long-life compression spring according to claim 1, characterized in that: The top of the square support (1) is provided with a rectangular lower groove (102) for the U-shaped hook (301) to be embedded in, and the outer wall of the front baffle (5) is provided with a notch (502) for the L-shaped hook (201) to be embedded in.

3. The variable cross-section anti-deformation long-life compression spring according to claim 1, characterized in that: A completely penetrating internal threaded hole (101) is provided at a corner position on the surface of the square support (1), and the square support (1) is made of a component made of alloy steel.

4. The variable cross-section anti-deformation long-life compression spring according to claim 1, characterized in that: A through hole (501) is provided at a central position inside the front baffle (5), and the diameter of the through hole (501) is smaller than the outer diameter of the inner shaft (6).

5. The variable cross-section anti-deformation long-life compression spring according to claim 1, characterized in that: An axial hole (4) is provided on the outer wall of the square support (1) on the side away from the second coil spring (3), a bearing monomer (7) is installed inside the axial hole (4), and one end of the inner shaft (6) passes through the inner ring of the bearing monomer (7).

6. The variable cross-section anti-deformation long-life compression spring according to claim 1, characterized in that: The helical turn pitch of the first helical spring (2) is smaller than the helical turn pitch of the second helical spring (3).

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