Jig for automatically detecting height of screw

By designing a fixture for automatically detecting screw height, and utilizing structures such as limit slots, telescopic rods, and detection probes, the problems of unstable screw detection and time-consuming manual detection are solved, thereby improving the stability and efficiency of screw height detection.

CN223940249UActive Publication Date: 2026-02-24DONGGUAN NUOZHENG ELECTRONICS CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520763345.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-22
Publication Date
2026-02-24
Estimated Expiration
2035-04-22

AI Technical Summary

Technical Problem

In the existing technology, screw inspection during the assembly of electronic products is unstable, and screws are easily missed or lifted out. Moreover, manual inspection is time-consuming and labor-intensive, which affects the inspection efficiency.

Method used

An automatic screw height detection fixture was designed, including a support base, a limiting component, and a detection component. The fixture achieves stable fixing and height detection of the screw through structures such as a limiting slot, a telescopic rod, a spring, and a detection probe, and displays the detection status with indicator lights.

Benefits of technology

It improves the stability and efficiency of screw height detection, prevents screw damage, simplifies the detection process, and improves detection accuracy and speed.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223940249U_ABST
    Figure CN223940249U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of automatic detection jigs, and discloses a jig for automatically detecting the height of a screw, which comprises a supporting base, a limiting assembly is arranged at the top of the supporting base, a detection assembly is arranged above the limiting assembly, and the limiting assembly comprises a fixed base. And a limiting clamping groove is formed in the top of the fixed base. According to the jig for automatically detecting the screw height, a limiting clamping groove facilitates fixing of an accessory with the screw height to be detected, a limiting top plate is pressed downwards to make contact with the accessory, a telescopic rod is matched with a spring to drive a dome block to make contact with the limiting top plate for buffering, and the situation that the limiting top plate is directly pressed downwards to damage the accessory is prevented; a buffer plate is matched with a buffer air bag to facilitate buffer protection of the bottom of the accessory, the stability of screw height detection is improved conveniently, a straight bent iron sheet is driven to rotate through a handle, the straight bent iron sheet drives an arc-shaped support to rotate, the arc-shaped support drives a lifting rod to ascend and descend in a limiting seat, and then a limiting top plate is driven to ascend and descend conveniently.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of automatic detection fixture technology, specifically a fixture for automatically detecting screw height. Background Technology

[0002] When assembling electronic products, screws need to be installed on the product, and there are certain requirements for the height difference between the screw and the surface on the product where the screw is installed, so as to avoid problems in later assembly.

[0003] In the existing technology, during the assembly of electronic products, PCBs are fitted with frames or shells. During the operation, screws are often missed or lifted, resulting in poor product quality. Fixtures are usually used to fix and test the product components to facilitate subsequent assembly.

[0004] However, in the existing technology, it is inconvenient to clamp and protect the parts during the inspection process, which affects the stability of the inspection. Moreover, relying solely on the human eye to inspect the screw height is time-consuming and laborious, affecting the inspection efficiency. Therefore, there is an urgent need for a fixture that can automatically detect the screw height. Utility Model Content

[0005] Technical problems to be solved

[0006] The purpose of this utility model is to provide a fixture for automatically detecting screw height, so as to solve the problems mentioned in the background art, which are that it is inconvenient to clamp and protect the parts during the detection process, which affects the stability of the detection, and that it is time-consuming and laborious to detect screw height by relying solely on human eyes, which affects the detection efficiency.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a fixture for automatically detecting screw height, comprising a support base, a limiting component on the top of the support base, a detection component above the limiting component, the limiting component comprising a fixed base, a limiting slot on the top of the fixed base, mounting slots symmetrically formed on both sides of the top of the fixed base, a telescopic rod at the bottom of the mounting slot, a dome block at the top of the telescopic rod, one end of a spring connected to the top of the telescopic rod, and the other end of the spring connected to the bottom of the dome block.

[0009] As a preferred embodiment of this utility model, the detection component includes a mounting back plate. A fixed bracket is symmetrically arranged on the top of one side of the mounting back plate. One end of a straight-bent iron sheet is rotatably arranged on the inner wall of the fixed bracket. A handle is arranged on the other end of the straight-bent iron sheet. Arc-shaped brackets are symmetrically arranged on both sides of the bottom of the straight-bent iron sheet. A lifting rod is arranged on the inner side of the bottom of the arc-shaped bracket. A limit seat is arranged on the bottom of one side of the mounting back plate. The lifting rod is slidably arranged on the inner wall of the limit seat.

[0010] As a preferred technical solution of this utility model, the bottom end of the lifting rod is provided with a limiting top plate, and movable sleeves are symmetrically arranged on both sides of the limiting top plate. The top of the support base is provided with a limiting support rod that is adapted to the movable sleeve. The limiting support rod is slidably connected to the inner wall of the movable sleeve. A detection probe is provided on one side of the limiting top plate in a linear distribution, and a limiting pin is provided on one side of the detection probe.

[0011] As a preferred technical solution of this utility model, the support base is provided with a support plate symmetrically arranged on one side of the top, the support plate is provided with a fixed back plate on the top, the fixed back plate is provided with a mounting back plate on one side, the mounting back plate is provided with screw holes, and the mounting back plate is connected and fixed to the fixed back plate by bolts that are adapted to the screw holes. The four corners of the bottom of the support base are provided with anti-slip pads.

[0012] As a preferred technical solution of this utility model, a pad is provided on one side of the bottom of the limiting slot, a buffer plate is provided above the pad, and buffer airbags are evenly provided at the bottom of the buffer plate. The buffer airbags are connected and fixed to the top of the pad.

[0013] As a preferred embodiment of this utility model, a first indicator light is provided on the top of the support base, a second indicator light is provided on one side of the mounting back plate, and a third indicator light is symmetrically provided on one side of the second indicator light.

[0014] In a preferred embodiment of this utility model, the fixed brackets are rotatably connected to one end of the straight-bent iron sheet via a pin, the top of the arc-shaped bracket is rotatably connected to the bottom of the straight-bent iron sheet via a pin, and the top of the lifting rod is rotatably connected to the bottom of the arc-shaped bracket via a pin.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This automatic screw height detection fixture has a fixed base that uses a limiting slot to secure the part whose screw height is to be detected. A pad supports the bottom of the part in conjunction with the limiting slot. The limiting top plate presses down and contacts the part. A telescopic rod, in conjunction with a spring, causes a dome block to contact the limiting top plate for buffering, preventing the limiting top plate from directly pressing down and damaging the part. A buffer plate, in conjunction with a buffer airbag, helps to buffer and protect the bottom of the part, improving the stability of screw height detection. A handle drives a straight-bent iron plate to rotate, which in turn drives an arc-shaped bracket to rotate. The arc-shaped bracket drives a lifting rod to rise and fall inside the limiting seat, which in turn facilitates the raising and lowering of the limiting top plate. This facilitates the fixing of the part in conjunction with the fixed base, and the limiting support rod improves the stability of the raising and lowering of the limiting top plate.

[0017] 2. This automatic screw height detection fixture uses a detection probe to easily detect screw height. The detection probe is connected to the instrument via a cable. Limit pins facilitate the limiting of parts, making detection convenient. A support plate supports and fixes the back plate, which is then installed with bolts. The first indicator light shows the running status, the second indicator light shows the detection in progress, and the third indicator light shows the detection completed, facilitating auxiliary detection. 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 partial structural diagram of the present invention;

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

[0021] Figure 4 This is a schematic diagram of the buffer plate structure of this utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the fixed base of this utility model.

[0023] In the diagram: 1. Support base; 2. Limiting component; 201. Fixed base; 202. Limiting slot; 203. Pad; 204. Buffer plate; 205. Buffer airbag; 206. Mounting slot; 207. Telescopic rod; 208. Spring; 209. Dome block; 3. Supporting upright plate; 4. Fixed back plate; 5. Detection component; 501. Mounting back plate; 502. Fixed bracket; 503. Straight and bent iron sheet; 504. Handle; 505. Arc bracket; 506. Lifting rod; 507. Pin; 508. Limiting seat; 509. Limiting top plate; 510. Movable sleeve; 511. Limiting support rod; 512. Detection probe; 513. Limiting pin; 6. First indicator light; 7. Second indicator light; 8. Third indicator light; 9. Screw hole; 10. Bolt; 11. Anti-slip pad. Detailed Implementation

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

[0025] Please see Figures 1-5This utility model provides a technical solution: a fixture for automatically detecting screw height, including a support base 1, a limit component 2 on the top of the support base 1, a detection component 5 above the limit component 2, the limit component 2 including a fixed base 201, a limit slot 202 on the top of the fixed base 201, mounting slots 206 symmetrically provided on both sides of the top of the fixed base 201, a telescopic rod 207 at the bottom of the mounting slot 206, a dome block 209 at the top of the telescopic rod 207, one end of a spring 208 connected to the top of the telescopic rod 207, the other end of the spring 208 connected to the bottom of the dome block 209, and a pad 203 on one side of the bottom of the limit slot 202. A buffer plate 204 is provided above the 03, and buffer airbags 205 are evenly arranged at the bottom of the buffer plate 204. The buffer airbags 205 are connected and fixed to the top of the pad block 203. The fixed base 201 is used to fix the accessory whose screw height is to be tested through the limiting slot 202. The pad block 203 supports the bottom of the accessory in conjunction with the limiting slot 202. The limiting top plate 509 presses down and contacts the accessory. The telescopic rod 207 and the spring 208 drive the dome block 209 to contact the limiting top plate 509 for buffering, preventing the limiting top plate 509 from directly pressing down and damaging the accessory. The buffer plate 204 and the buffer airbags 205 help to buffer and protect the bottom of the accessory, which helps to improve the stability of screw height detection.

[0026] The detection component 5 includes a mounting backplate 501. A fixed bracket 502 is symmetrically arranged on the top of one side of the mounting backplate 501. One end of a straight-bent iron sheet 503 is rotatably mounted on the inner wall of the fixed bracket 502. A handle 504 is provided at the other end of the straight-bent iron sheet 503. Arc-shaped brackets 505 are symmetrically arranged on both sides of the bottom of the straight-bent iron sheet 503. A lifting rod 506 is provided on the inner side of the bottom of the arc-shaped brackets 505. The fixed brackets 502 are rotatably connected to one end of the straight-bent iron sheet 503 via pins 507. The top of the arc-shaped brackets 505 is rotatably connected to the bottom of the straight-bent iron sheet 503 via pins 507. The top of the lifting rod 506 is rotatably connected to the bottom of the arc-shaped brackets 505 via pins 507. A limiting seat 508 is provided on the bottom of one side of the mounting backplate 501. The lifting rod 506 is slidably mounted on the inner wall of the limiting seat 508. A limiting top plate 509 is provided at the bottom end of the lifting rod 506. The 9 has symmetrical movable sleeves 510 on both sides. The top of the support base 1 has a limiting rod 511 that matches the movable sleeve 510. The limiting rod 511 is slidably connected to the inner wall of the movable sleeve 510. The limiting top plate 509 has linearly distributed detection probes 512 on one side. The detection probe 512 has a limiting pin 513 on one side. The handle 504 drives the straight and bent iron piece 503 to rotate. The straight and bent iron piece 503 drives the arc bracket 505 to rotate. The arc bracket 505 drives the lifting rod 506 to rise and fall inside the limiting seat 508, which facilitates the raising and lowering of the limiting top plate 509. This is convenient for fixing the accessories with the fixed base 201. The limiting rod 511 helps to improve the stability of the raising and lowering of the limiting top plate 509. The detection probe 512 facilitates the detection of screw height. The detection probe 512 is connected to the instrument through a cable. The limiting pin 513 helps to limit the accessories and facilitates detection.

[0027] A support plate 3 is symmetrically arranged on one side of the top of the support base 1. A fixed back plate 4 is arranged on the top of the support plate 3. A mounting back plate 501 is arranged on one side of the fixed back plate 4. The mounting back plate 501 is provided with screw holes 9. The mounting back plate 501 is connected and fixed to the fixed back plate 4 by bolts 10 that are compatible with it. Anti-slip pads 11 are provided at the four corners of the bottom of the support base 1. A first indicator light 6 is arranged on the top of the support base 1. A second indicator light 7 is arranged on one side of the mounting back plate 501. A third indicator light 8 is symmetrically arranged on one side of the second indicator light 7. The fixed back plate 4 is supported by the support plate 3. The mounting back plate 501 is installed to the fixed back plate 4 by bolts 10. The first indicator light 6 shows the running status, the second indicator light 7 shows the detection in progress, and the third indicator light 8 shows the detection completed, which facilitates the detection.

[0028] Working principle: First, the fixed base 201, through the limiting slot 202, facilitates the fixation of the part whose screw height is to be tested. The pad 203, in conjunction with the limiting slot 202, supports the bottom of the part. The limiting top plate 509 presses down and contacts the part. Through the telescopic rod 207 and the spring 208, the dome block 209 contacts the limiting top plate 509 for buffering, preventing the limiting top plate 509 from directly pressing down and damaging the part. The buffer plate 204, in conjunction with the buffer airbag 205, helps to buffer and protect the bottom of the part, improving the stability of screw height detection. The handle 504 drives the straight-bent iron plate 503 to rotate, which in turn drives the arc-shaped bracket 505 to rotate. 505 drives the lifting rod 506 to rise and fall inside the limit seat 508, thereby facilitating the rise and fall of the limit top plate 509. This facilitates the fixing of the accessories with the fixed base 201. The limit support rod 511 helps improve the stability of the rise and fall of the limit top plate 509. The detection probe 512 facilitates the detection of screw height. The detection probe 512 is connected to the instrument via a cable. The limit pin 513 facilitates the auxiliary limit of the accessories for easy detection. The support plate 3 supports and fixes the back plate 4. The mounting plate 501 is installed on the fixed back plate 4 with bolts 10. The first indicator light 6 shows the running status, the second indicator light 7 shows the detection in progress, and the third indicator light 8 shows the detection completed, facilitating auxiliary detection.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A fixture for automatically detecting screw height, characterized in that: The device includes a support base (1), a limit component (2) is provided on the top of the support base (1), a detection component (5) is provided above the limit component (2), the limit component (2) includes a fixed base (201), a limit slot (202) is provided on the top of the fixed base (201), and mounting slots (206) are symmetrically provided on both sides of the top of the fixed base (201). A telescopic rod (207) is provided at the bottom of the mounting slot (206), a dome block (209) is provided at the top of the telescopic rod (207), one end of a spring (208) is connected to the top of the telescopic rod (207), and the other end of the spring (208) is connected to the bottom of the dome block (209).

2. The fixture for automatically detecting screw height according to claim 1, characterized in that: The detection component (5) includes a mounting back plate (501). A fixed bracket (502) is symmetrically arranged on the top of one side of the mounting back plate (501). One end of a straight-bent iron sheet (503) is rotatably arranged on the inner wall of the fixed bracket (502). A handle (504) is arranged on the other end of the straight-bent iron sheet (503). Arc-shaped brackets (505) are symmetrically arranged on both sides of the bottom of the straight-bent iron sheet (503). A lifting rod (506) is arranged on the inner side of the bottom of the arc-shaped bracket (505). A limit seat (508) is arranged on the bottom of one side of the mounting back plate (501). The lifting rod (506) is slidably arranged on the inner wall of the limit seat (508).

3. The fixture for automatically detecting screw height according to claim 2, characterized in that: The bottom end of the lifting rod (506) is provided with a limiting top plate (509), and movable sleeves (510) are symmetrically arranged on both sides of the limiting top plate (509). The top of the support base (1) is provided with a limiting support rod (511) that is adapted to the movable sleeve (510). The limiting support rod (511) is slidably connected to the inner wall of the movable sleeve (510). A detection probe (512) is provided on one side of the limiting top plate (509) in a linear distribution, and a limiting pin (513) is provided on one side of the detection probe (512).

4. The fixture for automatically detecting screw height according to claim 1, characterized in that: The support base (1) has a support plate (3) symmetrically arranged on one side of the top. The support plate (3) has a fixed back plate (4) on its top. The fixed back plate (4) has an mounting back plate (501) on one side. The mounting back plate (501) has screw holes (9). The screw holes (9) are connected and fixed to the mounting back plate (501) and the fixed back plate (4) by bolts (10) that are compatible with them. The support base (1) has anti-slip pads (11) at the four corners of its bottom.

5. The fixture for automatically detecting screw height according to claim 1, characterized in that: A pad (203) is provided on one side of the bottom of the limiting slot (202), and a buffer plate (204) is provided above the pad (203). Buffer airbags (205) are evenly provided at the bottom of the buffer plate (204), and the buffer airbags (205) are connected and fixed to the top of the pad (203).

6. The fixture for automatically detecting screw height according to claim 4, characterized in that: The top of the support base (1) is provided with a first indicator light (6), the side of the mounting back plate (501) is provided with a second indicator light (7), and the side of the second indicator light (7) is symmetrically provided with a third indicator light (8).

7. The fixture for automatically detecting screw height according to claim 2, characterized in that: The fixed brackets (502) are rotatably connected to one end of the straight-bent iron sheet (503) by means of a pin (507), the top of the arc-shaped bracket (505) is rotatably connected to the bottom of the straight-bent iron sheet (503) by means of a pin (507), and the top of the lifting rod (506) is rotatably connected to the bottom of the arc-shaped bracket (505) by means of a pin (507).