A long axis bending test fixture

By designing a long axis curvature detection fixture that includes an infrared sensor and an alarm, the long axis curvature can be automatically detected, solving the problems of inefficiency and missed detection caused by manual visual judgment, and achieving fast and accurate detection results.

CN224499464UActive Publication Date: 2026-07-14NINGHAI COUNTY KAIRUIDI AUTO PARTS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGHAI COUNTY KAIRUIDI AUTO PARTS CO LTD
Filing Date
2025-09-08
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, the detection of long axis curvature relies on manual visual judgment, which leads to low detection efficiency, visual fatigue, and missed detection problems.

Method used

A long shaft bending detection fixture is designed, comprising a fixture base, a detection base, a slot seat, a limit seat, and a limit ring. The fixture automatically detects the bending of the long shaft using an infrared sensor and an alarm, eliminating the need for visual judgment and improving detection efficiency.

Benefits of technology

It enables rapid and accurate detection of long axis curvature, reduces the skill requirements for inspectors, avoids visual fatigue and missed detections, improves detection efficiency, and reduces personnel costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a fixture for detecting the curvature of a long shaft, comprising: a fixture base with an adjustment groove on its surface; a detection base with an insert bar inside, wherein a detection contact is inserted through the insert bar; a retaining seat movably disposed within the adjustment groove, the retaining seat having a limiting retaining groove, a horizontal plate being disposed at the top of the limiting retaining groove, and an infrared sensor being disposed on the bottom surface of the horizontal plate; a limiting seat with a motor disposed on one side, the output end of the motor being disposed through the limiting seat and connected to an insert rod; and a limiting ring disposed within the limiting retaining groove. This utility model can quickly detect the curvature of long shafts after adjustment according to different models, is simple to operate, does not require high skill levels from the inspector, reduces personnel costs, eliminates visual inspection, avoids visual fatigue and thus avoids missed detections, improves detection efficiency, is easy to move, and occupies little space.
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Description

Technical Field

[0001] This utility model relates to the field of automotive parts testing technology, and in particular to a long shaft bending testing fixture. Background Technology

[0002] The long shaft is a shaft used in the roll-in and roll-out of the curtain in the trunk of a car. To ensure the yield of the long shaft, its curvature needs to be tested after production to see if it exceeds the specified value.

[0003] The current detection method involves manually picking up the sample, holding it at eye level, and visually judging it. This method requires extensive experience and can cause eye fatigue and soreness over long periods, leading to missed detections. Utility Model Content

[0004] This utility model provides a long shaft bending test fixture, which can be adjusted according to different models of long shafts to quickly test the bending of the long shaft. It is simple to operate, does not require high skill level from the tester, and reduces personnel costs. It eliminates visual inspection, avoids visual fatigue and thus avoids missed detection, improves testing efficiency, is easy to move, and occupies little space.

[0005] To solve the above-mentioned technical problems, this utility model provides a long axis bending degree detection fixture, comprising:

[0006] The tooling base has adjustment grooves on its surface;

[0007] The detection base has an insert strip inside, and a detection contact is inserted through the insert strip.

[0008] A card slot is movably disposed inside the adjustment groove. The card slot is provided with a limit card slot. A horizontal plate is provided on the top of the limit card slot. An infrared sensor is provided on the bottom surface of the horizontal plate.

[0009] A limiting seat has a motor on one side, and the output end of the motor passes through the limiting seat and is connected to a plug rod.

[0010] A limiting ring is disposed inside the limiting slot.

[0011] As a preferred embodiment of the above technical solution, both the adjustment groove and the card slot are provided in pairs, with the card slots located on both sides of the detection base and arranged symmetrically.

[0012] As a preferred embodiment of the above technical solution, the detection base is provided with a sliding groove, the insert is movably disposed inside the sliding groove, the detection contact includes a positioning seat and a contact block, the contact block is movably disposed inside the positioning seat and a compression spring is provided between it and the inner wall of the positioning seat, a contact switch is provided at the end of the contact block, and an electrical groove is provided on the surface of the tooling base.

[0013] As a preferred embodiment of the above technical solution, the bottom of the limiting slot is connected to an installation groove, and one end of the bottom of the limiting ring is provided with an insertion rod that matches the installation groove. Both the limiting slot and the limiting ring are U-shaped with a rounded bottom, and the limiting ring is made of rubber material.

[0014] As a preferred embodiment of the above technical solution, a long shaft is provided between the two limiting slots, and the insertion rod is inserted into the end of the long shaft.

[0015] As a preferred embodiment of the above technical solution, a support plate is provided on the outer side of the limiting seat, and an alarm and a storage battery are provided on the surface of the support plate. A cable is provided between the storage battery and the detection contact and is located inside the wire groove.

[0016] This utility model provides a long shaft bending detection fixture, which includes a detection base, a slot seat, a limit seat, an alarm, and a limit ring. The limit ring and insert rod are adjusted to the appropriate size according to different long shaft models and installed in the limit slot and on the motor output shaft, respectively. Then, the positions of the two slot seats in the adjustment groove are adjusted, and the long shaft is placed on the surface of the limit ring in the limit slot. One end of the long shaft is inserted into the insert rod. The motor drives the insert rod and the long shaft to rotate inside the detection contact. When the bending amplitude of the middle part of the long shaft exceeds the specified detection value, it will contact the detection contact during rotation, triggering an alarm. An infrared sensor at the bottom of the horizontal plate can also detect the height difference between the long shaft and the horizontal plate at different positions during rotation. When the height difference exceeds a preset value, a signal is fed back to the alarm. This fixture can be adjusted according to different long shaft models to quickly detect the bending of the long shaft. It is simple to operate, requires low operator skill, reduces personnel costs, eliminates visual fatigue, avoids missed detections, improves detection efficiency, is easy to move, and occupies little space.

[0017] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the card slot structure of this utility model;

[0021] Figure 4This is a schematic diagram of the monitoring base structure of this utility model.

[0022] In the diagram: 1 Tooling base, 11 Adjustment groove, 12 Wire groove, 2 Detection base, 21 Insert strip, 22 Detection contact, 3 Slot seat, 31 Limiting slot, 32 Mounting groove, 33 Horizontal plate, 4 Limiting seat, 41 Motor, 42 Insert rod, 5 Support plate, 6 Alarm, 7 Battery, 8 Limiting ring. Detailed Implementation

[0023] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See Figure 1-4 This utility model embodiment provides a long axis bending degree detection fixture, including:

[0025] The tooling base 1 has an adjustment groove 11 on its surface;

[0026] The detection base 2 has an insert 21 inside, and a detection contact 22 is inserted through the insert 21.

[0027] The card slot 3 is movably set inside the adjustment groove 11. The card slot 3 is provided with a limit card slot 31. A horizontal plate 33 is provided on the top of the limit card slot 31, and an infrared sensor is provided on the bottom surface of the horizontal plate 33.

[0028] The limiting seat 4 has a motor 41 on one side. The output end of the motor 41 passes through the limiting seat 4 and is connected to a plug rod 42.

[0029] The limiting ring 8 is located inside the limiting slot 31.

[0030] This embodiment provides a long shaft bending detection fixture, which includes a detection base 2, a slot seat 3, a limit seat 4, an alarm 6, and a limit ring 8. The limit ring 8 and the insertion rod 42 are adjusted to the appropriate size according to different models of long shafts and installed in the limit slot 31 and on the output shaft of the motor 41, respectively. Then, the positions of the two slot seats 3 in the adjustment groove 11 are adjusted, and the long shaft is placed on the surface of the limit ring 8 in the limit slot 31. One end of the long shaft is inserted into the insertion rod 42. The motor 41 drives the insertion rod and the long shaft to rotate inside the detection contact 22. When the bending amplitude of the middle part of the long shaft exceeds the edge detection gauge... During the rotation, the device will contact the detection contact 22. When contact occurs, the alarm 6 will sound an alarm. The infrared sensor at the bottom of the horizontal plate 33 can also detect the height difference between the long shaft and the horizontal plate 33 at different positions during the rotation. When the height difference exceeds the preset value, a feedback signal will be sent to the alarm 6 to sound an alarm. It can quickly detect the curvature of the long shaft after adjustment according to different models of long shafts. It is simple to operate, does not require high skill level from the inspector, and reduces personnel costs. It eliminates visual inspection, avoids visual fatigue, avoids missed detections, improves detection efficiency, is easy to move, and occupies little space.

[0031] In a further embodiment of this invention, both the adjustment groove 11 and the card slot 3 are provided as two, with the card slot 3 disposed on both sides of the detection base 2 and arranged symmetrically.

[0032] In this embodiment, the two card slots 3 support the two sides of the long shaft respectively. The infrared sensor at the bottom of the horizontal plate 33 can also detect the height difference between the long shaft and the horizontal plate 33 at different positions during the rotation of the long shaft. When the height difference exceeds the preset value, the long shaft has an excessive degree of bending. At this time, a feedback signal is sent to the alarm 6 to remind the user.

[0033] In a further embodiment of this invention, the detection base 2 is provided with a sliding groove, the insert 21 is movably disposed inside the sliding groove, the detection contact 22 includes a positioning seat and a contact block, the contact block is movably disposed inside the positioning seat and a compression spring is provided between it and the inner wall of the positioning seat, the end of the contact block is provided with a contact switch, the surface of the tooling base 1 is provided with a wire groove 12, and a cable is provided between the battery 7 and the detection contact 22 and is disposed inside the wire groove 12.

[0034] In this embodiment, when the bending amplitude of the middle part of the long shaft exceeds the specified value of the edge detection, it will contact the detection contact 22 during rotation. When contact occurs, the alarm 6 will sound an alarm. Moreover, the height of the insert 21 in the detection base 2 and the length of the detection contact 22 extending out of the insert 21 can be adjusted according to the different models and sizes of the long shaft to ensure that detection work can be carried out for long shafts of different models and sizes.

[0035] In a further embodiment of this invention, the bottom of the limiting slot 31 is connected to the mounting slot 32, and one end of the bottom of the limiting ring 8 is provided with an insertion rod that matches the mounting slot 32. Both the limiting slot 31 and the limiting ring 8 are U-shaped with a rounded bottom, and the limiting ring 8 is made of rubber material.

[0036] In this embodiment, the limiting ring 8 is inserted into the mounting groove 32 at the bottom of the limiting slot 31 via the insert rod 8. After the limiting ring 8 is pressed against the limiting slot 31, a space is formed that allows the long shaft to rotate. Moreover, the limiting ring 8 of different thicknesses can be installed according to the different models and thicknesses of the long shaft to meet different testing requirements. In addition, the limiting ring 8 is made of elastic rubber material, which is low in cost and easy to replace and adjust.

[0037] In a further embodiment of this invention, a long shaft is provided between the two limiting slots 31, and the insertion rod 42 is inserted into the end of the long shaft.

[0038] In this embodiment, the insertion rod 42 can be adjusted and installed on the output shaft of the motor 41 according to different models and thicknesses of insertion rods. When the motor 41 is working, it can drive the insertion rod 42 to rotate. After the long shaft is tightly inserted and connected to the insertion rod 41, it can drive the long shaft to rotate.

[0039] In a further embodiment of this invention, a support plate 5 is provided on the outer side of the limiting seat 4, and an alarm 6 and a storage battery 7 are provided on the surface of the support plate 5.

[0040] In this embodiment, the battery 7 provides energy to the electrical components, and the alarm 6 can alert the operator that the product is defective.

[0041] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the described specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A long axis camber detection tool, characterized by, include: The tooling base (1) has an adjustment groove (11) on its surface; The detection base (2) has an insert (21) inside, and a detection contact (22) is provided inside the insert (21). The card slot seat (3) is movably disposed inside the adjustment groove (11). The card slot seat (3) is provided with a limiting card slot (31). A horizontal plate (33) is provided on the top of the limiting card slot (31). An infrared sensor is provided on the bottom surface of the horizontal plate (33). The limiting seat (4) has a motor (41) on one side. The output end of the motor (41) passes through the limiting seat (4) and is connected to a plug rod (42). A limiting ring (8) is disposed inside the limiting slot (31).

2. The long axis bending detection fixture according to claim 1, characterized in that, The adjustment groove (11) and the card slot (3) are both provided in pairs, and the card slot (3) is provided on both sides of the detection base (2) and is arranged symmetrically.

3. The long axis bending detection fixture according to claim 1, characterized in that, The detection base (2) has a sliding groove inside, the insert (21) is movably disposed inside the sliding groove, the detection contact (22) includes a positioning seat and a contact block, the contact block is movably disposed inside the positioning seat and a compression spring is provided between it and the inner wall of the positioning seat, the end of the contact block is provided with a contact switch, and the surface of the tooling base (1) is provided with an electrical wire groove (12).

4. The long axis bending detection fixture according to claim 1, characterized in that, The bottom of the limiting slot (31) is connected to the mounting slot (32), and the bottom end of the limiting ring (8) is provided with a plug rod, which matches the mounting slot (32). The limiting slot (31) and the limiting ring (8) are both U-shaped with a rounded bottom. The limiting ring (8) is made of rubber material.

5. The long axis bending detection fixture according to claim 1, characterized in that, A long shaft is provided between the two limiting slots (31), and the insertion rod (42) is inserted into the end of the long shaft.

6. The long axis bending detection fixture according to claim 3, characterized in that, A support plate (5) is provided on the outside of the limiting seat (4). An alarm (6) and a storage battery (7) are provided on the surface of the support plate (5). A cable is provided between the storage battery (7) and the detection contact (22) and is located inside the wire groove (12).