Blind bolt mistake proofing jig
By designing a blind bolt anti-misalignment fixture and using a positioning frame and winding wheel system to adjust the blind bolt installation position, the problem of difficult blind bolt positioning in wire harness manufacturing was solved, enabling rapid and accurate installation of blind bolts, improving efficiency and reducing rework costs.
Patent Information
- Application Number
- CN202422916794.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
During wire harness manufacturing, operators often struggle to quickly and accurately locate and install blind bolts, leading to inefficiency and a high risk of incorrect or missed installations, thus increasing rework costs.
A blind bolt anti-misalignment fixture was designed, including a positioning frame, a blind bolt installation positioning component, and a winding wheel system. By adjusting the position of the blind bolt installation positioning component and tensioning the pull line, the blind bolt can be accurately positioned and quickly installed.
It improves the accuracy and efficiency of blind bolt installation, reduces the possibility of incorrect or missing installation, and lowers rework costs.
Smart Images

Figure CN223545154U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical technology, specifically to an auxiliary tool for blind bolt installation. Background Technology
[0002] Wiring harnesses located in the wet areas inside a car require waterproof plastic shells. For holes on these shells without return loops, blind plugs must be used to seal the empty holes during wiring harness fabrication to ensure waterproofing. However, for shells with numerous holes, operators cannot quickly visually determine the locations of the blind plugs during assembly. Instead, they must count the specific locations before installation, resulting in low efficiency, a high risk of incorrect or missed installations, and rework only during final inspection, increasing costs. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model provides a blind bolt prevention fixture, which has solved at least one of the above-mentioned technical problems.
[0004] The technical solution of this utility model is: a blind bolt anti-misalignment fixture, characterized in that it includes a positioning frame, and the positioning frame is provided with a positioning baffle for being fitted around the plastic shell.
[0005] It also includes a blind bolt installation and positioning component, which has a blind bolt through hole for the blind bolt to pass through. Both sides of the blind bolt installation and positioning component are respectively connected to one end of a pull line, and the other end of the pull line is wound on a winding wheel.
[0006] The outer edge of the positioning frame is fitted with a sleeve that is rotatably connected to the winding wheel, and the sleeve is threadedly connected with a locking screw that abuts against the winding wheel.
[0007] This invention facilitates the adjustment of the blind bolt installation position by modifying the positioning component, allowing for customization of the blind bolt installation location as needed. In use, the positioning frame is fitted onto the plastic shell, and the blind bolt is inserted according to the positioning component. This facilitates precise positioning of the blind bolt.
[0008] More preferably, the sleeve is installed on all four sides of the positioning frame.
[0009] It facilitates the installation of blind bolt mounting and positioning components according to the location requirements of the blind bolt.
[0010] More preferably, the plastic shell is provided with a matrix of holes, and the sleeves are fixed on all four sides of the holes.
[0011] This facilitates the movement of the blind bolt installation positioning component directly above different hole positions.
[0012] More preferably, the positioning frame is provided with guide rails on all four sides (front, back, left, and right), the guide rails are slidably connected to the slider, and the sleeve is installed on the slider.
[0013] It facilitates the adjustment of the position of the blind plug installation positioning component by sliding the sleeve.
[0014] More preferably, four positioning baffles are provided, the four positioning baffles are L-shaped, and the four positioning baffles are respectively fixed at the four corners of the positioning frame.
[0015] More preferably, the bend of the positioning baffle is provided with an arc-shaped notch.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This invention facilitates the adjustment of the blind bolt installation position by modifying the positioning component, allowing for customization of the blind bolt installation location as needed. In use, the positioning frame is fitted onto the plastic shell, and the blind bolt is inserted according to the positioning component. This facilitates precise positioning of the blind bolt. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a specific embodiment 1 of the present utility model;
[0019] Figure 2 This is a partial structural diagram of the blind bolt installation positioning component in a specific embodiment 1 of this utility model;
[0020] Figure 3 This is a schematic diagram of the positioning frame in a specific embodiment 1 of the present utility model;
[0021] Figure 4 This is a cross-sectional view of the winding wheel in a specific embodiment 1 of this utility model;
[0022] Figure 5 This is a structural schematic diagram of a specific embodiment 3 of the present utility model.
[0023] In the diagram, 1 is the positioning frame, 2 is the positioning baffle, 3 is the blind bolt mounting positioning component, 4 is the winding wheel, 5 is the sleeve, 6 is the locking screw, 7 is the locking component, 8 is the guide rail, 9 is the slider, and 10 is the pull line. Detailed Implementation
[0024] See Figures 1 to 4Specific embodiment 1: A blind bolt anti-misalignment fixture includes a positioning frame 1, on which a positioning baffle 2 for fitting around a plastic shell is provided; it also includes a blind bolt installation positioning component 3, which has a blind bolt through hole for the blind bolt to pass through. Both sides of the blind bolt installation positioning component 3 are connected to one end of a pull line 10, and the other end of the pull line 10 is wound around a winding wheel 4. A sleeve 5, rotatably connected to the winding wheel 4, is installed on the outer edge of the positioning frame 1. The sleeve 5 is threadedly connected to a locking screw 6 that abuts against the winding wheel 4. This utility model allows for easy adjustment of the blind bolt installation position according to requirements by adjusting the position of the blind bolt installation positioning component 3. The pull line on the opposite side of the blind bolt installation positioning component is tensioned by the rotation of the winding wheel. Simultaneously, the position of the blind bolt installation positioning component is adjusted between the two winding wheels by tightening the pull line at one end and releasing the pull line at the other end. After adjustment, it is locked by the locking screw.
[0025] In use, the positioning frame 1 is fitted onto the plastic shell, and the blind bolt is inserted according to the blind bolt installation positioning part 3. This facilitates positioning with the blind bolt.
[0026] Four positioning baffles 2 are provided, each L-shaped, and are fixed to the four corners of the positioning frame 1. The bends of the positioning baffles 2 have arc-shaped notches. Sleeves and positioning baffles are fixed to the upper and lower sides of the positioning frame, respectively.
[0027] The cross-section of the blind plug perforation matches the cross-section of the blind plug. The cross-section of the blind plug perforation can be circular, L-shaped, bifurcated, rounded rectangle, or oval. The area of the cross-section of the blind plug perforation is larger than the area of the cross-section of the blind plug. The vertical projection of the blind plug perforation covers all adjacent blind plug insertion positions on the housing. This is suitable for situations where multiple adjacent holes on the housing require blind plug insertion.
[0028] The outer circumference of the blind bolt installation positioning component has two or four equally spaced holes for connecting the pull wire.
[0029] Position markers are provided on any one of the front, back, left, or right sides of the positioning frame. These markers can be painted coatings or positioning protrusions. This facilitates determining the relative position with the plastic shell.
[0030] See Figure 1 In specific embodiment 2, based on specific embodiment 1, sleeves 5 are installed on all four sides of the positioning frame 1. This facilitates the installation of the blind bolt mounting and positioning component 3 according to the positional requirements of the blind bolt. A matrix arrangement of holes is provided on the plastic shell, and sleeves 5 are fixed on all four sides of each hole. This facilitates the movement of the blind bolt mounting and positioning component 3 to directly above different holes.
[0031] See Figure 5In specific embodiment 3, based on specific embodiment 1, the difference is that guide rails 8 are provided on all four sides of the positioning frame 1, and the guide rails 8 are slidably connected to the slider 9. A sleeve 5 is installed on the slider 9. This facilitates the adjustment of the position of the blind plug installation positioning component by sliding the sleeve 5. A locking component 7 that abuts against the guide rail 8 is threadedly connected to the slider 9.
[0032] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.
Claims
1. A blind-plug anti-misoperation fixture, characterized in that, It includes a positioning frame, on which a positioning baffle is provided for fitting around the outer periphery of the plastic shell; It also includes a blind bolt installation and positioning component, which has a blind bolt through hole for the blind bolt to pass through. Both sides of the blind bolt installation and positioning component are respectively connected to one end of a pull line, and the other end of the pull line is wound on a winding wheel. The outer edge of the positioning frame is fitted with a sleeve that is rotatably connected to the winding wheel, and the sleeve is threadedly connected with a locking screw that abuts against the winding wheel.
2. The blind bolt anti-misalignment fixture according to claim 1, characterized in that: The sleeve is installed on all four sides of the positioning frame.
3. The blind bolt anti-misalignment fixture according to claim 1, characterized in that: The plastic shell is provided with a matrix of holes, and the sleeves are fixed on the front, back, left and right sides of the holes.
4. The blind bolt anti-misalignment fixture according to claim 1, characterized in that: The positioning frame is provided with guide rails on all four sides (front, back, left, and right), and the guide rails are slidably connected to the slider. The sleeve is installed on the slider.
5. The blind bolt anti-misalignment fixture according to claim 1, characterized in that: The positioning baffle is provided in four parts, which are L-shaped and fixed to the four corners of the positioning frame respectively.
6. A blind bolt prevention fixture according to claim 5, characterized in that: The positioning baffle has an arc-shaped notch at the bend.