A detection tool for torsion spring

Abstract

The utility model provides a kind of detection tool of torsion spring, it includes detection seat, and detection seat is equipped with cylindrical sleeve joint part, and detection seat is located in the left and right sides of cylindrical sleeve joint part and is equipped with positioning group, and positioning group includes first positioning part and second positioning part, and first positioning part and second positioning part are detachably installed on detection seat, and rectangular long slot is formed between first positioning part and second positioning part.This detection tool detection principle is intuitive and reliable.

Description

Technical Field

[0001] This utility model relates to a testing fixture for torsion springs. Background Technology

[0002] Door lock handles contain a torsion spring, whose function is to automatically return the handle to its original position after operation. During installation, both ends of the torsion spring must abut against the door handle and the lock body, respectively. The flatness of the torsion spring ends directly affects the stability of the handle after installation. If the ends are tilted or uneven, the door handle will swing back, affecting the user experience. Currently, door handles on the market often swing back due to uneven torsion spring ends, but because there is no corresponding testing equipment to detect the flatness of the spring ends, this problem has remained difficult to solve. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned problems. We provide a testing fixture for torsion springs, which can quickly and effectively detect whether the two ends of the spring are straight.

[0004] To achieve the above objectives, this utility model provides a testing fixture for torsion springs, which includes a testing seat with a cylindrical sleeve portion. The testing seat has positioning groups on the left and right sides of the cylindrical sleeve portion. The positioning groups include a first positioning portion and a second positioning portion. The first positioning portion and the second positioning portion are detachably installed on the testing seat, and a rectangular groove is formed between the first positioning portion and the second positioning portion.

[0005] In one or more embodiments, the detection seat is provided with a first cavity, and at least a portion of the cylindrical sleeve is embedded in the first cavity.

[0006] In one or more embodiments, the detection seat is provided with a second cavity for the first positioning part and the second positioning part to be embedded.

[0007] In one or more embodiments, the length of the rectangular slot is 8mm-30mm.

[0008] In one or more embodiments, the detection seat, the cylindrical sleeve, the first positioning part, and the second positioning part are made of ferrous material.

[0009] Compared with the prior art, the advantages of this invention are: the testing principle of this testing fixture is intuitive and reliable. In use, simply place the collar portion of the torsion spring onto the cylindrical collar portion to simulate the installation state, and then place the two protruding ends of the torsion spring into the rectangular slots formed by the positioning groups on both sides. If the ends of the torsion spring are straight, they can be parallel to the end faces of the rectangular slots. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the testing fixture in this embodiment; Figure 2 An exploded view of the inspection fixture in this embodiment. Detailed Implementation

[0011] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0012] See appendix Figure 1-2 This application provides a testing fixture for torsion springs, characterized by: a testing base 1, a cylindrical sleeve portion 2 on the testing base 1, and positioning groups on the left and right sides of the cylindrical sleeve portion 2. The positioning groups include a first positioning portion 3 and a second positioning portion 4, which are detachably mounted on the testing base 1, forming a rectangular groove 5 between them. This testing fixture can quickly and effectively detect the straightness of the two protruding ends of the torsion spring, thereby determining whether the torsion spring meets the installation requirements. It fundamentally solves the technical problem of door handles swinging back due to uneven torsion spring ends, without dedicated testing equipment, thus improving product quality and production efficiency. Producers can also adjust production parameters in real time based on the detected torsion spring data.

[0013] The detection seat 1 is provided with a first cavity 6, and at least a portion of the cylindrical sleeve part 2 is embedded in the first cavity 6, which improves the installation accuracy and structural strength of the cylindrical sleeve part 2, and ensures that the position of the cylindrical sleeve part 2 is fixed during the detection process without shaking or shifting, thereby ensuring the reliability of the detection benchmark and the accuracy of the detection results.

[0014] The detection seat 1 is provided with a second cavity 7 for the first positioning part 3 and the second positioning part 4 to be embedded, which ensures that the rectangular long groove 5 formed between the first positioning part 3 and the second positioning part 4 has accurate size and position, avoids detection errors caused by loose or misaligned positioning components, and further improves the accuracy and reliability of the detection fixture.

[0015] The length of the rectangular groove 5 is 8mm-30mm. This size range allows the testing fixture to be adapted to the length range of the protruding ends of most door lock torsion springs on the market, ensuring the universality and practicality of the test.

[0016] The detection seat 1, the cylindrical sleeve part 2, the first positioning part 3 and the second positioning part 4 are made of iron material, which has the advantages of high strength, high hardness, good wear resistance and relatively low cost.

[0017] The above description is only a preferred embodiment of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present utility model should be included in the protection scope recorded in the claims.

Claims

1. A testing fixture for torsion springs, characterized in that: The device includes a detection seat (1), which has a cylindrical sleeve (2). The detection seat (1) has positioning groups on the left and right sides of the cylindrical sleeve (2). The positioning groups include a first positioning part (3) and a second positioning part (4). The first positioning part (3) and the second positioning part (4) are detachably installed on the detection seat (1), and a rectangular long groove (5) is formed between the first positioning part (3) and the second positioning part (4).

2. The testing fixture for a torsion spring according to claim 1, characterized in that: The detection seat (1) is provided with a first cavity (6), and at least a portion of the cylindrical sleeve (2) is embedded in the first cavity (6).

3. The testing fixture for a torsion spring according to claim 1, characterized in that: The detection seat (1) is provided with a second cavity (7) for the first positioning part (3) and the second positioning part (4) to be embedded.

4. The testing fixture for a torsion spring according to claim 1, characterized in that: The length of the rectangular long groove (5) is 8mm-30mm.

5. The testing fixture for a torsion spring according to claim 4, characterized in that: The detection seat (1), cylindrical sleeve (2), first positioning part (3) and second positioning part (4) are made of iron material.

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