The earring is equipped with a split-type tension spring with a joint bearing inside.

Abstract

The split-type tension spring with a spherical bearing installed inside the earring is a general-purpose mechanical part. The spherical bearing is installed in the annular hole at the outer end of the spring-connected earring. The bearing is axially locked and positioned within the annular hole by left and right retaining rings that are snapped onto the inner wall of the annular hole. This spring solves the technical problem of sliding friction at the connection point between the earring hole and the equipment in existing split-type tension springs. It features a simple, novel, and reasonable structure, low frictional resistance, long service life, low operating cost, and easy and quick maintenance.

Description

Technical Field

[0001] This utility model belongs to the category of general mechanical parts, and mainly relates to a tension spring. Background Technology

[0002] Traditional tension springs are all one-piece structures, meaning they are made by continuously winding a single spring steel wire. Ideally, during operation, the force should be applied along the spring's axis. However, in actual use, due to the influence of machinery and equipment structure, the tension cannot be accurately applied to the spring along its axis. This can cause the spring to tilt, twist, or oscillate relative to its axis, leading to breakage at both ends. This not only reduces the spring's lifespan, increases operating costs, increases the failure rate, and reduces safety, but also places more stringent demands on the design of machinery and equipment, resulting in poor adaptability. 。

[0003] To address the aforementioned issues, the inventor has developed a "Split-Type Combined Tension Spring," and obtained a utility model patent (patent number 202322035762.2) in 2024. This patented solution overcomes and resolves the technical defects of traditional integral tension springs. However, in practical use, it has been found that because the connection between the spring-connected mounting earring hole and the connecting parts of the device is a sliding friction structure, the frictional resistance is high. This causes the spring-connected mounting earring to wear out severely in a short period of time, even leading to damage. Since the connection structure between the tension spring body and the spring-connected mounting earring cannot be separated, the entire split-type combined tension spring must be replaced. This not only results in the waste of materials and parts but also increases usage costs and the frequency of replacement and maintenance. 。 Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art and, in combination with the actual needs of using tension springs, to develop and design a split-type combined tension spring with a joint bearing installed inside the earring, so as to significantly improve and extend the service life of the split-type combined tension spring, reduce the cost of use, reduce losses, and facilitate maintenance.

[0005] The basic design of this utility model is as follows: a joint bearing is installed in the annular hole of the outer end of the spring-connected earring. The joint bearing is axially locked and positioned in the annular hole of the outer end of the spring-connected earring by the cooperation of the left and right retaining rings that are snapped onto the inner wall of the annular hole of the spring-connected earring. This constitutes a split-type tension spring with a joint bearing installed in the earring.

[0006] This utility model overcomes and solves the technical problem of sliding friction in the connection between the earring hole of the existing split-type tension spring and the equipment by installing a joint bearing in the circular hole of the spring connection and mounting the earring. It has the characteristics of novel, unique, simple and reasonable structure, low frictional resistance, long service life, low use cost, and simple, convenient and quick maintenance and replacement of joint bearing. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the overall structure of a split-type tension spring with a joint bearing installed inside the earring;

[0008] Figure 2 yes Figure 1 The right view;

[0009] Figure 3 yes Figure 1 The left view.

[0010] Part number description in the image:

[0011] 1. Tension spring body; 2. Spring connecting and mounting earring; 3. Joint bearing; 4. Left retaining ring; 5. Right retaining ring. Detailed Implementation

[0012] The following is a detailed description of the embodiments of this utility model with reference to the accompanying drawings. A split-type combined tension spring with a joint bearing installed inside the earring comprises two hinged spring-mounted earrings 2, which are circumferentially rotatable, axially swingable, and axially prevented from dislodging, inserted into both ends of the tension spring body 1. The inner end of the spring-mounted earring 2 is hemispherical, with a diameter smaller than the inner diameter of the tension spring body 1. The two ends of the tension spring body 1 are conical. The hemispherical portions of the two spring-mounted earrings 2 are respectively disposed inside the conical ends of the tension spring body 1. A joint bearing 3 is installed in the annular hole of the outer end of the spring-mounted earring 2. The joint bearing 3 is axially locked and positioned within the annular hole of the outer end of the spring-mounted earring 2 by the cooperation of a left retaining spring 4 and a right retaining spring 5, which are fitted onto the inner wall of the annular hole of the spring-mounted earring 2.

[0013] During operation, the spring connecting lugs 2 at both ends of the tension spring body 1 are used to connect the spring connecting lugs 2. The lugs 3 are inserted into the lug holes of the lugs, and the connecting parts are then attached to the working parts of the machine or equipment. The connecting parts are in contact with the inner holes of the lugs 3, but not in direct contact with the spring connecting lugs 2. When pulled by tension, even if the direction of the tension force is not aligned with the axis of the tension spring body 1, the spring connecting lugs 2 can rotate and swing relative to the tension spring body 1 along its axis due to the hinged locking structure. At this time, the connecting parts rotate relative to the spring connecting lugs 2 through the lugs 3, avoiding and eliminating direct sliding friction contact between the connecting parts and the spring connecting lugs 2. When the lugs 3 are damaged, the left retaining spring 4 and the right retaining spring 5 are removed from the annular hole of the spring connecting lugs 2, and then the lugs 3 are removed to complete the repair and replacement.

Claims

1. A split-type combined tension spring with a joint bearing installed inside an earring, wherein hinged spring connecting earrings (2) are respectively inserted into both ends of the tension spring body (1), which are circumferentially rotatable, axially swingable, and axially prevented from dislodging. The inner end of the spring connecting earring (2) is hemispherical, and the diameter of the hemisphere is smaller than the inner diameter of the tension spring body (1). The two ends of the tension spring body (1) are conical. The hemispherical parts of the two spring connecting earrings (2) are respectively disposed inside the conical ends of the tension spring body (1), characterized in that: A spherical bearing (3) is fitted into the annular hole at the outer end of the spring connection mounting earring (2). The spherical bearing (3) is axially locked and positioned in the annular hole at the outer end of the spring connection mounting earring (2) by the cooperation of the left retaining ring (4) and the right retaining ring (5) which are snapped onto the inner wall of the annular hole of the spring connection mounting earring (2).

Images