Jig for spring envelope detection

Abstract

The utility model aims to provide a jig for spring envelope detection, which solves the problem that each circle of envelope of a spring cannot be completely detected, an upper seat and a lower seat are respectively used for fixing two ends of the spring, a detection mechanism comprises a ring sleeve, a vertical rod and a scale strip, the ring sleeve is rotatably sleeved on the periphery of the lower seat, and the scale strip is arranged on the vertical rod. The vertical rod is connected to the ring sleeve, and the scale strip is movably arranged on the vertical rod; the scale strip is provided with scales, the end of the scale strip is used for being attached to the outer wall of each layer of spring ring, the ring sleeve is rotationally arranged on the periphery of the lower base in a sleeving mode, when the ring sleeve rotates, the vertical rod and the scale strip rotate together, the vertical rod and the scale strip rotate around the spring, and the scale strip can ascend or descend on the vertical rod and be away from or close to the spring. Therefore, after the spring is compressed, whether the envelope of the spring is within the set range is determined by reading the scales on the scales, so that envelope detection of the spring can be quickly realized, and the problem of low spring envelope detection efficiency is solved.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension damping, and in particular to a fixture for spring envelope testing. Background Technology

[0002] With the rapid development of new energy vehicles, the design space for suspension springs has become increasingly compact due to the constraints of surrounding components. In conjunction with the OEM's requirements for the envelope of components, it is necessary to focus on the detection and control of the spring envelope. It is necessary to realize the detection of the suspension spring envelope to avoid the spring bending deformation after compression and interference with surrounding components, which can lead to abnormal noises in the whole vehicle. In severe cases, the spring may break, affecting normal driving, resulting in a poor user experience and safety hazards.

[0003] The existing patent publication number (CN218443588U) discloses a tooling for detecting the envelope size of a MacPherson shock absorber spring. Its specification describes it as being used for detecting the envelope size of shock absorber springs. The entire detection effect is very clear. The result can be obtained by simply rotating the detector once. Obviously, it is not enough to detect the spring by only one rotation, as the spring has multiple layers of rotation.

[0004] The existing patent publication number (CN219531862U) discloses a cylindrical helical eccentric spring inner and outer envelope inspection tool. The description states that the lateral distance between the spring outer envelope detection piece 2 and the effective coil 91 of the spring is detected by measuring bar. When the measuring bar cannot be inserted between the spring outer envelope detection piece 2 and any one of the effective coils of the spring, it can be determined that the outer envelope of the cylindrical helical eccentric spring 9 is unqualified. However, the groove on the effective coil of the spring cannot be detected, and the size of the groove cannot be accurately determined. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for detecting the envelope of a spring, which solves the problem that the envelope of each turn of a spring cannot be completely detected.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model provides a fixture for detecting the envelope of a spring, including an upper seat, a lower seat, and a detection mechanism. The upper seat and the lower seat are respectively used to fix the two ends of the spring.

[0008] The detection mechanism includes a ring, a vertical rod, and a scale bar. The ring is rotatably sleeved on the outer periphery of the lower seat, the vertical rod is connected to the ring, and the scale bar is movably mounted on the vertical rod.

[0009] The scale bar has graduations, and the ends of the scale bar are used to fit against the outer wall of each layer of spring coil.

[0010] Optionally, the bottom of the upper seat has an upper positioning post, which is used to sleeve the upper part of the spring.

[0011] Optionally, the upper part of the lower seat has a lower positioning post, which is used to be sleeved on the bottom of the spring.

[0012] Optionally, the lower seat also has a chassis at its bottom, and the ring is rotatably sleeved on the chassis.

[0013] Furthermore, the detection mechanism also includes an angle disk, the chassis is mounted on the angle disk, and the angle disk has angle markings.

[0014] Optionally, the detection mechanism further includes a slider, which is slidably disposed on the vertical rod, and the scale bar is slidably disposed on the slider.

[0015] Optionally, the end of the scale bar is provided as a pointed tip, which is used to fit against the outer wall of each layer of spring coil.

[0016] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] This utility model discloses a fixture for detecting the envelope of a spring. Because the ring sleeve is rotatably mounted on the outer circumference of the lower seat, when the ring sleeve rotates, the vertical rod and the scale bar rotate together. The vertical rod and the scale bar rotate around the spring, and the scale bar can move up or down the vertical rod, and away from or close to the spring. In this way, after the spring is compressed, the scale reading can be used to determine whether the spring envelope is outside the set range. This allows for the rapid detection of the envelope of each turn of the spring, solving the problem that the envelope of each turn of the spring cannot be completely detected. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0019] Figure 1 This is a perspective view of a fixture for spring envelope detection according to a preferred embodiment of the present invention;

[0020] Figure 2 yes Figure 1 The exploded view shown;

[0021] Figure 3 It's an exploded view from another perspective.

[0022] The reference numerals in the attached figures are explained as follows:

[0023] 1. Upper seat; 2. Lower seat; 3. Detection mechanism; 4. Spring; 11. Upper positioning post; 21. Lower positioning post; 22. Chassis; 31. Ring; 32. Vertical rod; 33. Scale bar; 34. Angle plate; 35. Sliding block; 36. Point. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1 and Figure 2 and Figure 3 As shown, a fixture for spring envelope detection includes an upper seat 1, a lower seat 2, and a detection mechanism 3. The upper seat 1 and the lower seat 2 are used to fix the two ends of the spring 4, respectively. The detection mechanism 3 includes a ring 31, a vertical rod 32, and a scale bar 33. The ring 31 is rotatably sleeved on the outer periphery of the lower seat 2. The spring 4 is placed vertically on the lower seat 2. The vertical rod 32 is connected to the ring 31. The scale bar 33 is movably disposed on the vertical rod 32. When the ring 31 rotates, the vertical rod 32 and the scale bar 33 rotate around the spring 4. The scale bar 33 can rise or fall on the vertical rod 32. The scale bar 33 can also move horizontally on the vertical rod 32, that is, the scale bar 33 can move away from or closer to the spring 4.

[0028] The scale bar 33 has graduations, and the end of the scale bar 33 is used to fit against the outer wall of each layer of spring coil. When testing the envelope of spring 4, the upper seat 1 is compressed from top to bottom to compress spring 4. Then, the ring 31 is rotated, and the vertical rod 32 and the scale bar 33 rotate accordingly. The scale bar 33 rises or falls during the rotation. During the testing process, the scale bar 33 always fits against the outer wall of spring 4. Some outer walls of spring 4 protrude more outward, and some protrude less. Regardless of how much the outer walls of spring 4 protrude outward, these protruding parts are within the range of the process requirements and are considered qualified products. If they are not within the range of the process requirements, they are considered unqualified products.

[0029] The more the outer wall of spring 4 protrudes outward, the more the scale bar 33 should move away from spring 4; the more the outer wall of spring 4 is recessed, the more the scale bar 33 should move towards spring 4. In short, the end of the scale bar 33 always keeps in contact with the outer wall of spring 4. The scale on the scale bar 33 is read according to the distance the scale bar 33 moves, so as to determine whether the envelope of spring 4 is qualified.

[0030] The upper seat 1 has an upper positioning post 11 at the bottom. The upper positioning post 11 is used to sleeve the upper part of the spring 4. The upper part of the spring 4 is sleeved on the upper positioning post 11, which can prevent the upper part of the spring 4 from shaking.

[0031] The lower seat 2 has a lower positioning post 21 on its upper part. The lower positioning post 21 is used to fit the bottom of the spring 4. The bottom of the spring 4 is fitted onto the lower positioning post 21, which can prevent the lower part of the spring 4 from shaking.

[0032] The lower seat 2 also has a base plate 22 at its bottom. The ring 31 is rotatably fitted on the base plate 22. The outer diameter of the base plate 22 is smaller than the outer diameter of the lower seat 2. In this way, when the ring 31 rotates, the lower seat 2 can prevent the ring 31 from moving upward, thus causing the ring 31 to disengage from the base plate 22.

[0033] The detection mechanism 3 also includes an angle disk 34, and the base 22 is set on the angle disk 34. The angle disk 34 has angle markings, ranging from 0° to 360°. When placing the spring 4, the bottom ring of the spring 4 can be aligned with an angle, and the scale bar 33 should also be aligned with an angle. During the detection process, if the envelope value of the spring 4 is found to be outside the set range, the corresponding position can be found according to the positioning angle.

[0034] The detection mechanism 3 also includes a slider 35, which is slidably mounted on the vertical rod 32. The scale bar 33 is slidably mounted on the slider 35. The slider 35 moves up or down on the vertical rod 32, and the scale bar 33 and slider 35 move horizontally.

[0035] The end of the scale bar 33 is set as a pointed tip 36, which is used to fit the outer wall of each layer of spring coil. In this way, the pointed tip 36 can fit precisely on the outer periphery of the spring 4. If the envelope value of the spring 4 is not within the set range, the non-compliant position can be accurately identified and marked accordingly.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A jig for spring envelope detection, comprising an upper seat (1), a lower seat (2) and a detection mechanism (3), the upper seat (1) and the lower seat (2) being used for fixing two ends of a spring respectively, characterized in that, the detection mechanism (3) comprises a ring sleeve (31), a vertical rod (32) and a scale bar (33), the ring sleeve (31) is rotatably sleeved on the outer periphery of the lower seat (2), the vertical rod (32) is connected to the ring sleeve (31), and the scale bar (33) is movably arranged on the vertical rod (32); the scale bar (33) is provided with a scale, and the end of the scale bar (33) is used for abutting against the outer wall of each spring coil.

2. The tool for spring envelope detection of claim 1, wherein, The upper seat (1) is provided with an upper positioning column (11) at the bottom, and the upper positioning column (11) is used for sleeving the upper part of the spring.

3. The tool for spring envelope detection of claim 1, wherein, The lower seat (2) is provided with a lower positioning column (21) at the upper part, and the lower positioning column (21) is used for sleeving the bottom of the spring.

4. The tool for spring envelope detection of claim 1, wherein, The lower seat (2) is further provided with a bottom disc (22) at the bottom, and the ring sleeve (31) is rotatably sleeved on the bottom disc (22).

5. The tool for spring envelope detection of claim 4, wherein, The detection mechanism (3) further comprises a protractor (34), the bottom disc (22) is arranged on the protractor (34), and the protractor (34) is provided with an angle mark.

6. The tool for spring envelope detection of claim 1, wherein, The detection mechanism (3) further comprises a sliding block (35), the sliding block (35) is movably arranged on the vertical rod (32), and the scale bar (33) is movably arranged on the sliding block (35).

7. The tool for spring envelope detection of claim 1, wherein, The end of the scale bar (33) is provided with a sharp head (36), and the sharp head (36) is used for abutting against the outer wall of each spring coil.

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