A tension spring and a connecting structure for driving the tension spring to deform

Abstract

The present application relates to the technical fields of mechanical engineering, and particularly relates to a tensile spring, which can be deformed under the driving of a connecting structure, and specifically comprises a spring main body, an extension arm and a flat circle, the extension arm is arranged along the axial direction of the spring main body, and the extension arm is connected to the end of the spring main body; the flat circle is arranged along the direction perpendicular to the extension arm, and the flat circle is connected to the end of the extension arm, so that the tensile spring constitutes a hollow end structure along the axial direction. Thus, when the tensile spring is deformed by the screw rod of the connecting structure, the screw rod can be embedded in the inside of the tensile spring, so that the space utilization is improved.

Description

Technical Field

[0001] This invention relates to the field of mechanical engineering technology, specifically providing a tension spring and a connection structure for driving the deformation of the tension spring. Background Technology

[0002] Cylindrical helical tension springs are widely used in mechanical equipment and instruments. Their end structures mainly include semi-circular hooks, round hooks, long-arm semi-circular hooks, adjustable tension springs, and springs with rotatable hooks at both ends. The selection of the spring end structure type depends on the specific assembly and fixing method.

[0003] Most existing cylindrical helical tension springs adopt a hook-type design, where the tension spring and connecting piece at the end of the hook-type structure do not have a fixed degree of rotational freedom around the central axis. In automated instruments and equipment, it is sometimes necessary to drive the tension spring to deform via a lead screw, which requires the tension spring to be fixedly connected to the connecting piece.

[0004] In addition, to make the instruments and equipment more compact, other components such as lead screws need to be embedded inside the tension spring. However, the existing end structures of tension springs occupy the center position along the axial direction of the tension spring, resulting in low space utilization. This makes it impossible to arrange the lead screw inside the tension spring and drive the tension spring to deform. Summary of the Invention

[0005] To solve the above problems, the present invention provides a tension spring and a connecting structure for driving the deformation of the tension spring. By setting the tension spring to have a hollow end structure, when the lead screw of the connecting structure drives the deformation of the tension spring, the lead screw can be embedded inside the tension spring, thereby improving space utilization.

[0006] An embodiment of the first aspect of the present invention provides a tension spring capable of deformation under the drive of a connecting structure. Specifically, it includes a spring body, an extension arm, and a flat circle. The extension arm is arranged along the axial direction of the spring body and is connected to the end of the spring body. The flat circle is arranged in a direction perpendicular to the extension arm and is connected to the end of the extension arm, so that the tension spring forms a hollow end structure along the axial direction.

[0007] Preferably, the flat circle has a circular structure.

[0008] Preferably, the outer diameter D of the spring body, the wire diameter d of the spring body, and the diameter D' of the flat circle conform to the following:

[0009] D-D'≥2d.

[0010] An embodiment of the second aspect of the present invention provides a connection structure for driving the deformation of a tension spring, which is used to drive the tension spring provided in the embodiment of the first aspect to deform. Specifically, it includes a connector, a lead screw, and a nut. One end of the connector is provided with a connecting block, which is used to connect with the tension spring. The center of the connector and the connecting block is provided with a through threaded hole along the axial direction. The lead screw is screwed into the threaded hole. The connecting block is provided with an external thread, and the nut is screwed into the external thread. The nut is used to connect the tension spring to the connector.

[0011] Compared with existing technologies, the present invention achieves the following beneficial effects: A tension spring capable of deformation under the drive of a connecting structure specifically includes a spring body, an extension arm, and a flat circle. The extension arm is arranged along the axial direction of the spring body and connected to the end of the spring body; the flat circle is arranged perpendicular to the extension arm and connected to the end of the extension arm, so that the tension spring forms a hollow end structure along the axial direction. Therefore, when the tension spring is deformed by a lead screw using the connecting structure, the lead screw can be embedded inside the tension spring, thereby improving space utilization.

[0012] By limiting the outer diameter D of the spring body, the wire diameter d of the spring body, and the diameter D' of the flat circle, the hollow end structure of the tension spring has sufficient space to meet the requirements of the spring forming process and to reserve space for installing the nut.

[0013] When using the connecting structure to drive the deformation of the tension spring, as the adjusting screw drives the tension spring, the screw can pass through the flat circle and embed itself inside the tension spring, thereby significantly reducing the overall volume of the connecting structure and the tension spring, achieving a compact layout and improving space utilization. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a tension spring from a first perspective according to an embodiment of the first aspect of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of the tension spring from a second perspective in the embodiment shown;

[0016] Figure 3 This is a schematic diagram of the connection structure for driving the deformation of the tension spring and the combined structure of the tension spring according to an embodiment of the second aspect of the present invention.

[0017] The reference numerals in the figures include:

[0018] 1. Spring body, 2. Outer arm, 3. Flat circle, 4. Connector, 41. Connecting block, 42. Limiting groove, 5. Lead screw, 6. Nut. Detailed Implementation

[0019] In the following description, embodiments of the invention will be described with reference to the accompanying drawings. In the description below, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not constitute a limitation thereof.

[0021] The following reference Figures 1 to 3 This invention describes a tension spring and a connection structure for driving the deformation of the tension spring, according to some embodiments of the present invention.

[0022] like Figures 1 to 2 As shown, an embodiment of the first aspect of the present invention provides a tension spring capable of deformation under the drive of a connecting structure, specifically comprising a spring body 1, an extension arm 2, and a flat circle 3. The extension arm 2 is arranged along the axial direction of the spring body 1 and is integrally connected to the end of the spring body 1. The flat circle 3 is arranged perpendicular to the extension arm 2, such that the flat circle 3 is perpendicular to the tension direction of the tension spring, and the flat circle 3 is integrally connected to the end of the extension arm 2, so that the tension spring forms a hollow end structure along the axial direction, providing installation space for the connecting structure that drives the tension spring to deform. Therefore, when the lead screw 5 of the connecting structure drives the tension spring to deform, the lead screw 5 can be embedded inside the tension spring, thereby improving space utilization.

[0023] The extension arm 2 and the spring body 1, and the flat circle 3 and the extension arm 2 are connected with a smooth transition, so that when processing the spring body 1, the extension arm 2 and the flat circle 3 can be integrally formed with the spring body 1, providing a transition space for the processing and forming of the flat circle 3, and improving the overall strength of the tension spring.

[0024] Here, the hollow end structure refers to the axial structure of the end of the tension spring being hollow, which is different from the traditional tension spring having a hook at the end.

[0025] like Figures 1 to 2 As shown, the flat circle 3 is a circular structure used to fix the tension spring to the connection structure that drives the tension spring to deform.

[0026] like Figures 1 to 2 As shown, the outer diameter D of the spring body 1, the wire diameter d of the spring body 1, and the diameter D' of the flat circle 3 conform to the following:

[0027] D-D'≥2d.

[0028] Specifically, by limiting the outer diameter D of the spring body 1, the wire diameter d of the spring body 1, and the diameter D' of the flat circle 3, the hollow end structure of the tension spring has sufficient space to meet the requirements of the spring forming process and facilitate processing; at the same time, the hollow end structure can reserve space for installing the nut.

[0029] like Figure 3 As shown, according to an embodiment of the second aspect of the present invention, a connection structure for driving the deformation of a tension spring is provided, which is used to drive the tension spring provided in the first aspect embodiment to deform. Specifically, it includes a connector 4, a lead screw 5, and a nut 6. One end of the connector 4 is provided with a connecting block 41, which is used to connect with the tension spring. The connector 4 and the connecting block 41 have through threaded holes along their axial direction at their centers. The lead screw 5 is screwed into the threaded hole, so that the lead screw 5, the connector 4, and the connecting block 41 together constitute a lead screw and nut driving mechanism, converting the rotation of the lead screw 5 into the linear motion of the connector 4, thereby driving the tension spring to deform. The connecting block 41 has external threads, and the nut 6 is screwed into the external threads. The nut 6 is used to clamp and fix the tension spring to the connector 4.

[0030] Specifically, when using the connecting structure to drive the deformation of the tension spring, the flat circle 3 and the outer extension arm 2 of the tension spring are fitted onto the outside of the connecting block 41, so that the flat circle 3 abuts against the bottom of the connecting block 41; at this time, the nut 6 is screwed onto the external thread, and the nut 6 is located at the hollow end structure of the tension spring. Since the tension spring has limited the dimensions of the outer diameter D of the spring body 1, the wire diameter d of the spring body 1, and the diameter D' of the flat circle 3, tightening the nut 6 can compress the flat circle 3, thereby achieving a fixed connection between the tension spring and the connecting structure.

[0031] Therefore, when the connecting structure drives the tension spring to deform, as the adjusting screw 5 drives the tension spring, the screw 5 can pass through the flat circle 3 and embed itself inside the tension spring, thereby greatly reducing the overall volume of the connecting structure and the tension spring, achieving a compact layout and improving space utilization.

[0032] It is understandable that the orientation of the connecting block 41, nut 6, etc., on the connecting part 4 is not restricted, such as... Figure 3 As shown, nut 6 is located on the right side of connector 4, and tension spring is stretched to the left. In some possible embodiments, nut 6 is located on the left side of connector 4, and tension spring is stretched to the right.

[0033] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0034] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A connection structure for driving a tensile spring to be deformed, applied to drive a tensile spring to be deformed, characterized by, The utility model relates to a connecting structure of a tensile spring, which comprises: a connecting piece (4) provided with a connecting block (41) at one end for connecting with the tensile spring, the connecting piece (4) and the connecting block (41) being provided with a through screw hole in the center along the axial direction; a screw rod (5) screwed in the screw hole; a nut (6) provided with an external thread on the outside of the connecting block (41) and screwed in the external thread for connecting the tensile spring to the connecting piece (4); the tensile spring comprises: a spring body (1); an extension arm (2) provided along the axial direction of the spring body (1) and connected to the end of the spring body (1); a flat circle (3) provided along the direction perpendicular to the extension arm (2) and connected to the end of the extension arm (2) to form a hollow end structure along the axial direction of the tensile spring, the flat circle (3) being a circular structure; the outer diameter D of the spring body (1), the wire diameter d of the spring body (1) and the diameter D' of the flat circle (3) satisfying the condition D-D' >= 2d; the flat circle (3) and the extension arm (2) of the tensile spring are sleeved outside the connecting block (41), the flat circle (3) abuts against the bottom of the connecting block (41), the nut (6) is located at the hollow end structure of the tensile spring, the flat circle (3) is compressed when the nut (6) is screwed, thereby realizing the fixed connection of the tensile spring and the connecting structure, when the connecting structure is used to drive the deformation of the tensile spring, the screw rod (5) passes through the flat circle (3) and is embedded in the inside of the tensile spring as the tensile spring is driven by adjusting the screw rod (5), the rotation of the screw rod (5) is converted into the linear motion of the connecting piece (4), thereby driving the tensile spring to deform.

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