A checking fixture for frameless car door window regulators

Abstract

The present invention discloses a checking fixture for a frameless car door glass lifter, which includes a base mechanism, a pressing conversion mechanism and two hole pin mechanisms. A positioning convex ring is provided at the upper end of the base mechanism, a positioning cavity is provided below the positioning convex ring, and an avoidance through hole is provided at the central position of the positioning convex ring; the pressing conversion mechanism includes a clamping structure and a conversion structure, the conversion structure is fixed to the clamping structure, the conversion structure includes a connecting block, a guide rail pressing head for pressing the guide rail is fixed on the upper end surface of the connecting block, and a total assembly pressing head for pressing the pivot nut is fixed on the lower end surface of the connecting block; the two hole pin mechanisms are arranged oppositely, and the hole pin mechanism includes a pin shaft, and a first positioning pin adapted to the hole at the end of the pivot nut is provided at one end of the pin shaft. The present invention provides a checking fixture for a frameless car door glass lifter, which realizes the simultaneous detection of the glass lifter assembly and the guide rail single piece on one checking fixture, is convenient to operate, reduces the development of a pair of checking fixtures, and reduces the cost.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to a checking fixture for a frameless door glass lifter. Background Art

[0002] One of the main differences between a frameless door glass lifter and a traditional framed door glass lifter is that the frameless door glass lifter can achieve Y-direction adjustment. Therefore, the structures of the frameless door glass lifter and the traditional framed door glass lifter are different. One of the different structures is that pivot nuts and double-headed bolts are installed at the top of the guide rail of the frameless door glass lifter. The position deviation of the guide rail, pivot nut, and double-headed bolt directly affects the Y-direction adjustment of the glass lifter, and thus indirectly affects the Y-direction adjustment of the door glass, resulting in problems such as poor sealing, door leakage, and step difference. Therefore, it is crucial to ensure the position accuracy of the guide rail, pivot nut, and double-headed bolt. A checking fixture is one of the means to control the accuracy of parts. Checking fixtures are generally divided into assembly checking fixtures and single-piece checking fixtures. In order to facilitate operation and reduce development costs, it has become a new trend to design and combine single-piece checking fixtures and assembly checking fixtures together. Summary of the Invention

[0003] In order to overcome the problems in the prior art that the assembly checking fixture and the single-piece checking fixture are separated, the assembly checking fixture detects the assembled parts, and the single-piece checking fixture detects the single piece, resulting in cumbersome operation and increased costs, the present invention provides a checking fixture for a frameless door glass lifter, which realizes the simultaneous detection of the glass lifter assembly and the guide rail single piece on one checking fixture, is convenient to operate, reduces the development of a pair of checking fixtures, and reduces costs.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A checking fixture for a frameless door glass lifter includes a base mechanism, a pressing conversion mechanism, and two pin mechanisms. A positioning convex ring is provided at the upper end of the base mechanism, a positioning cavity is provided below the positioning convex ring, and an avoidance through hole is provided at the central position of the positioning convex ring; the pressing conversion mechanism includes a clamping structure and a conversion structure. The conversion structure is fixed to the clamping structure. The conversion structure includes a connecting block. A guide rail pressing head for pressing the guide rail is fixed to the upper end surface of the connecting block, and an assembly pressing head for pressing the pivot nut is fixed to the lower end surface of the connecting block; the two pin mechanisms are arranged oppositely. The pin mechanism includes a pin shaft, and a first positioning pin adapted to the hole at the end of the pivot nut is provided at one end of the pin shaft.

[0006] In the above technical solution, the lengths of the assembly pressing head and the guide rail pressing head are different. An avoidance hole for avoiding the positioning convex ring is provided on the lower end surface of the guide rail pressing head. By switching the front and back sides of the connecting block, the guide rail pressing head and the assembly pressing head can be switched. The positioning convex ring can position the through hole on the window regulator guide rail, and the positioning cavity can position the double-headed bolt on the window regulator assembly. This structure enables the simultaneous detection of the window regulator assembly and the single-piece guide rail on one inspection fixture, which is convenient to operate, reduces the development of a set of inspection fixtures, and lowers the cost.

[0007] Preferably, the conversion structure further includes a connecting piece, a locking screw, and a connecting pin. One end of the connecting pin is fixed to the connecting piece, and the other end of the connecting pin extends into the connecting block. The locking screw penetrates into the connecting block from the side and is threadedly connected to the connecting pin.

[0008] The locking screw is a hand-tightening screw, which is convenient for manual operation. The guide rail pressing head, the assembly pressing head, and the connecting block are fixed together by bolts. The connecting pin can accurately position the position of the connecting block, and then the connecting block is fixed to the connecting pin by the locking screw. Loosening the locking screw allows the connecting block to be rotated to switch the relative positions of the downward-facing guide rail pressing head and the assembly pressing head.

[0009] Preferably, the conversion structure is detachably fixed to the clamping structure.

[0010] Preferably, the base mechanism includes a fixed seat, a left base part, a right base part, and a locking handle. The left base part and the right base part are fixed on the left and right sides above the fixed seat and are clamped to each other by the locking handle. The protrusions above the left base part and the right base part enclose a positioning convex ring, and the grooves on the left base part and the right base part enclose a positioning cavity. The positioning convex ring can directly position the through hole on the window regulator guide rail, enabling the detection of the guide rail surface and holes. When it is necessary to detect the window regulator assembly, first open the right base part, place the double-headed bolt on the window regulator assembly in the groove under the left base part; then close the right base part and tighten the left and right base parts with the locking handle. The detection of the window regulator guide rail surface, holes, and double-headed bolts can be realized.

[0011] Preferably, a locking nut is provided at the end of the locking handle, and the locking nut and the locking handle jointly clamp the left base part and the right base part. This structure can enable the locking handle and the locking nut to clamp the left base part and the right base part on the fixed seat at the same time.

[0012] Preferably, the locking nut has a closed end structure. A pressing sliding ring and a pressing spring are sleeved on the locking handle. One end of the pressing spring is connected to the pressing sliding ring, and the other end of the pressing spring is connected to the locking handle. The pressing sliding ring presses the right base member. The locking nut having a closed end structure enables a fixed length after the locking handle is tightened, allowing the pressing spring to maintain a relatively stable elastic force to press the pressing sliding ring against the right base member, preventing excessive pressing force from damaging the double-headed bolt and the inspection tool. If the right base member cannot be closed under a fixed pressing force, it indicates that the installation position of the double-headed bolt is inaccurate and the inspection is unqualified. If the right base member can be closed under a fixed pressing force, it indicates that the installation position of the double-headed bolt is accurate and the inspection is qualified.

[0013] Preferably, the pin mechanism further includes a pin base, and the pin is horizontally arranged on the pin base and is slidably connected to the pin base.

[0014] Preferably, a second positioning pin is provided on the pin. The second positioning pin is coaxially arranged with the first positioning pin. The diameter of the second positioning pin is larger than that of the first positioning pin, and the first positioning pin is arranged outside the second positioning pin. This structure can position the pivot nut by positioning the holes at both ends of the pivot nut with the first positioning pin, and position the pivot nut mounting hole on the lifter guide rail with the second positioning pin, thereby positioning the lifter guide rail.

[0015] Preferably, a pin limit ring is provided inside the first positioning pin.

[0016] Preferably, a telescopic spring is provided on the pin. One end of the telescopic spring is connected to the pin, and the other end of the telescopic spring is connected to the pin base.

[0017] Preferably, a pin handle is provided at one end of the pin away from the second positioning pin.

[0018] A method for detecting a frameless door glass lifter uses the above-mentioned frameless door glass lifter inspection tool and includes the following steps:

[0019] a. Lifter guide rail detection: Place the lifter guide rail on the base mechanism, align the positioning convex ring with the through hole on the base, press the lifter guide rail with the guide rail pressing head, tighten the clamping structure, align the second positioning pin on the pin mechanism with the pivot nut mounting hole on the lifter guide rail. If the positioning convex ring can smoothly pass through the through hole on the base and the second positioning pin can pass through the pivot nut mounting hole on the lifter guide rail, the detection passes; otherwise, the detection fails.

[0020] b. Detection of the window lifter assembly: Loosen the locking handle, open the right base part, place the double-headed bolt on the window lifter assembly into the groove under the left base part, press one end of the assembly pressing head on the pivot nut of the window lifter assembly, tighten the clamping device, then close the right base part, tighten the left base part and the right base part with the locking handle, directly insert the first positioning pin into the holes at both ends of the pivot nut. If the first positioning pin can pass through the holes at both ends of the pivot nut smoothly and the right base part can be closed smoothly, the detection passes; otherwise, the detection fails.

[0021] In the above technical solution, the detection of the window lifter assembly and the single-piece guide rail can be realized simultaneously on one inspection fixture, which is convenient to operate, reduces the development of one inspection fixture, and lowers the cost.

[0022] The beneficial effect of the present invention is that the detection of the window lifter assembly and the single-piece guide rail can be realized simultaneously on one inspection fixture, which is convenient to operate, reduces the development of one inspection fixture, and lowers the cost. Description of the Drawings

[0023] Figure 1 It is a schematic structural view of the present invention when detecting the window lifter guide rail;

[0024] Figure 2 It is a schematic structural view of the present invention when detecting the window lifter assembly;

[0025] Figure 3 It is a partial structural view of the present invention when detecting the window lifter assembly;

[0026] Figure 4 It is a schematic structural view of the base mechanism;

[0027] Figure 5 It is a schematic structural view of the hole and pin mechanism;

[0028] Figure 6 It is a schematic structural view of the pressing conversion mechanism;

[0029] Figure 7 It is a partial cross-sectional view of the pressing conversion mechanism;

[0030] Figure 8 It is a cross-sectional view of the base mechanism.

[0031] In the figure: base mechanism 1, positioning convex ring 1.1, positioning cavity 1.2, avoidance through-hole 1.3, fixing seat 1.4, left base part 1.5, right base part 1.6, locking handle 1.7, locking nut 1.8, pressing sliding ring 1.9, pressing spring 1.10, pressing conversion mechanism 2, conversion structure 2.1, connecting block 2.1.1, guide rail pressing head 2.1.2, assembly pressing head 2.1.3, connecting piece 2.1.4, locking screw 2.1.5, connecting pin 2.1.6, clamping structure 2.2, pin hole mechanism 3, pin shaft 3.1, first positioning pin 3.2, pin hole base 3.3, second positioning pin 3.4, pin hole limit ring 3.5, pin hole handle 3.7, lifter guide rail 4, lifter assembly 5, double-headed bolt 6, pivot nut 7. Detailed implementation mode

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Embodiment 1:

[0034] As Figure 1 and Figure 2 shown, a jig for checking the window regulator of a frameless car door includes a base mechanism 1, a pressing conversion mechanism 2 and two pin hole mechanisms 3. As Figure 3 and Figure 4 shown, a positioning convex ring 1.1 is provided at the upper end of the base mechanism 1, a positioning cavity 1.2 is provided below the positioning convex ring 1.1, and an avoidance through-hole 1.3 is provided at the center position of the positioning convex ring 1.1; the base mechanism 1 includes a fixing seat 1.4, a left base part 1.5, a right base part 1.6 and a locking handle 1.7. The left base part 1.5 and the right base part 1.6 are fixed on the left and right sides above the fixing seat 1.4. A locking nut 1.8 is provided at the end of the locking handle 1.7. The locking nut 1.8 and the locking handle 1.7 jointly clamp the left base part 1.5 and the right base part 1.6. The protrusions above the left base part 1.5 and the right base part 1.6 form the positioning convex ring 1.1, and the grooves on the left base part 1.5 and the right base part 1.6 form the positioning cavity 1.2.

[0035] As Figure 6 and Figure 7As shown in the figure, the pressing conversion mechanism 2 includes a clamping structure 2.2 and a conversion structure 2.1. The conversion structure 2.1 is detachably fixed to the clamping structure 2.2. The conversion structure 2.1 includes a connecting block 2.1.1, a connecting member 2.1.4, a locking screw 2.1.5, and a connecting pin 2.1.6. A guide rail pressing head 2.1.2 for pressing the guide rail is fixed to the upper end surface of the connecting block 2.1.1, and a total assembly pressing head 2.1.3 for pressing the pivot nut 7 is fixed to the lower end surface of the connecting block 2.1.1. One end of the connecting pin 2.1.6 is fixed to the connecting member 2.1.4, and the other end of the connecting pin 2.1.6 extends into the connecting block 2.1.1. The locking screw 2.1.5 penetrates into the connecting block 2.1.1 from the side and is threadedly connected to the connecting pin 2.1.6. The locking screw 2.1.5 is a hand-tightening screw.

[0036] As Figure 5 shown in the figure, two pin-hole mechanisms 3 are arranged opposite to each other. The pin-hole mechanism 3 includes a pin shaft 3.1 and a pin-hole base 3.3. A first positioning pin 3.2 adapted to the hole at the end of the pivot nut 7 is provided at one end of the pin shaft 3.1. A telescopic spring is provided on the pin shaft 3.1. One end of the telescopic spring is connected to the pin shaft 3.1, and the other end of the telescopic spring is connected to the pin-hole base 3.3. A pin-hole handle 3.7 is provided at the end of the pin shaft 3.1 away from the first positioning pin 3.2.

[0037] In the above technical solution, the lengths of the total assembly pressing head 2.1.3 and the guide rail pressing head 2.1.2 are different. An avoidance hole for avoiding the positioning convex ring 1.1 is provided on the lower end surface of the guide rail pressing head 2.1.2. By switching the front and back sides of the connecting block 2.1.1, the guide rail pressing head 2.1.2 and the total assembly pressing head 2.1.3 can be switched. The positioning convex ring 1.1 can position the through hole on the window regulator guide rail 4, and the positioning cavity 1.2 can position the double-headed bolt 6 on the window regulator assembly 5. This structure enables the simultaneous detection of the window regulator assembly 5 and the guide rail single piece on one fixture, which is convenient to operate, reduces the development of a set of fixtures, and lowers the cost.

[0038] Embodiment 2:

[0039] As Figure 8 shown in the figure, the locking nut 1.8 has a closed end structure. A pressing sliding ring 1.9 and a pressing spring 1.10 are sleeved on the locking handle 1.7. One end of the pressing spring 1.10 is connected to the pressing sliding ring 1.9, and the other end of the pressing spring 1.10 is connected to the locking handle 1.7. The pressing sliding ring 1.9 presses the right base part 1.6. A second positioning pin 3.4 is provided on the pin shaft 3.1. The second positioning pin 3.4 is coaxially arranged with the first positioning pin 3.2. The diameter of the second positioning pin 3.4 is larger than that of the first positioning pin 3.2, and the first positioning pin 3.2 is arranged outside the second positioning pin 3.4. A pin-hole limiting ring 3.5 is provided inside the first positioning pin 3.2.

[0040] The locking nut 1.8 has a closed structure at one end, so that there is a fixed length after the locking handle 1.7 is tightened, enabling the compression spring 1.10 to maintain a relatively stable elastic force to press the compression sliding ring 1.9 against the right base part 1.6, avoiding excessive pressing force from damaging the double-headed bolt 6 and the inspection tool. If the right base part 1.6 cannot be closed under the action of a fixed pressing force, it indicates that the installation position of the double-headed bolt 6 is inaccurate and the inspection is unqualified. If the right base part 1.6 can be closed under the action of a fixed pressing force, it indicates that the installation position of the double-headed bolt 6 is accurate and the inspection is qualified.

[0041] Embodiment 3:

[0042] As shown in the figure, a method for detecting a frameless door glass lifter uses the above-mentioned inspection tool for a frameless door glass lifter, and includes the following steps:

[0043] a. Detection of the lifter guide rail 4: Place the lifter guide rail 4 on the base mechanism 1, align the positioning convex ring 1.1 with the through hole on the base, press the lifter guide rail 4 with the guide rail pressing head 2.1.2, tighten the clamping structure 2.2, align the second positioning pin 3.4 on the pin mechanism 3 with the pivot nut 7 mounting hole on the lifter guide rail 4. If the positioning convex ring 1.1 can pass through the through hole on the base smoothly and the second positioning pin 3.4 can pass through the pivot nut 7 mounting hole on the lifter guide rail 4, the detection passes; otherwise, the detection fails.

[0044] b. Detection of the lifter assembly 5: Loosen the locking handle 1.7, open the right base part 1.6, place the double-headed bolt 6 on the lifter assembly 5 in the groove under the left base part 1.5, press one end of the assembly pressing head 2.1.3 against the pivot nut 7 on the lifter assembly 5, tighten the clamping device, then close the right base part 1.6, tighten the left base part 1.5 and the right base part 1.6 with the locking handle 1.7, and directly insert the first positioning pin 3.2 into the holes at both ends of the pivot nut 7. If the first positioning pin 3.2 can pass through the holes at both ends of the pivot nut 7 smoothly and the right base part 1.6 can be closed smoothly, the detection passes; otherwise, the detection fails.

[0045] In the above technical solution, the detection of the glass lifter assembly 5 and the single-piece guide rail is realized simultaneously on one inspection tool, which is convenient to operate, reduces the development of a pair of inspection tools, and lowers the cost.

[0046] The beneficial effects of the present invention are: (1) The detection of the glass lifter assembly 5 and the single-piece guide rail is realized simultaneously on one inspection tool, which is convenient to operate, reduces the development of a pair of inspection tools, and lowers the cost.

Claims

1. A detection method for a frameless door window regulator, comprising a base mechanism, a pressing and converting mechanism, and two pin mechanisms. The upper end of the base mechanism is provided with a positioning convex ring, a positioning cavity is arranged below the positioning convex ring, and an avoidance through hole is provided on the positioning convex ring; the pressing and converting mechanism includes a clamping structure and a converting structure fixed to each other; the converting structure includes a connecting block, which has a guide rail pressing head at the upper end and an assembly pressing head at the lower end; the two pin mechanisms are arranged oppositely; the pin mechanism includes a pin shaft, and a first positioning pin and a second positioning pin are arranged at one end of the pin shaft; the second positioning pin is coaxially arranged with the first positioning pin; the first positioning pin is arranged outside the second positioning pin; the base mechanism includes a left base part and a right base part, the protrusions above the left base part and the right base part enclose the positioning convex ring, and the grooves on the left base part and the right base part enclose the positioning cavity; a. Detection of the window regulator guide rail: The window regulator guide rail is placed on the base mechanism, the positioning convex ring is aligned with the through hole on the window regulator guide rail, the guide rail pressing head presses on the window regulator guide rail, the clamping structure is pressed tightly, the second positioning pin on the pin mechanism is aligned with the pivot nut mounting hole. If the positioning convex ring can pass through the above-mentioned through hole smoothly and the second positioning pin can pass through the above-mentioned pivot nut mounting hole, it passes; otherwise, it fails. b. Detection of the window regulator assembly: The right base part is opened, the double-headed bolt on the window regulator assembly is placed in the groove under the left base part, the assembly pressing head presses on the pivot nut of the window regulator assembly, the clamping structure is pressed tightly, the right base part is closed, the locking handle is tightened to clamp the left base part and the right base part, and the first positioning pin is inserted into the two end holes of the pivot nut. If the first positioning pin passes through the two end holes of the pivot nut and the right base part can be closed, it passes; otherwise, it fails.

2. The detection method of the frameless door glass lifter according to claim 1, characterized in that, The converting structure further includes a connecting piece, a locking screw and a connecting pin. One end of the connecting pin is fixed to the connecting piece, the other end of the connecting pin extends into the connecting block, and the locking screw penetrates into the connecting block from the side and is threadedly connected with the connecting pin.

3. The frameless door glass lifter detection method according to claim 1 or 2, characterized in that, The base mechanism further includes a fixed seat and a locking handle. The left base part and the right base part are fixed on the left and right sides above the fixed seat and are clamped to each other by the locking handle.

4. The frameless door glass lifter detection method according to claim 3, wherein The end of the locking handle is provided with a locking nut, and the locking nut and the locking handle jointly clamp the left base part and the right base part.

5. The detection method of the frameless door glass lifter according to claim 4, characterized in that, The locking nut is a structure with one end closed. A pressing sliding ring and a pressing spring are sleeved on the locking handle. One end of the pressing spring is connected to the pressing sliding ring, the other end of the pressing spring is connected to the locking handle, and the pressing sliding ring presses on the right base part.

6. The frameless door glass lifter detection method according to claim 1 or 2, characterized in that, The pin mechanism further includes a pin base, the pin shaft is horizontally arranged on the pin base, and the pin shaft is slidably connected with the pin base.

7. The detection method of the frameless door glass lifter according to claim 6, characterized in that, The diameter of the second positioning pin is larger than that of the first positioning pin.

8. The detection method for frameless door glass lifter according to claim 6, characterized in that, A telescopic spring is arranged on the pin shaft, one end of the telescopic spring is connected to the pin shaft, and the other end of the telescopic spring is connected to the pin base.

9. The method for detecting the window regulator of frameless vehicle door according to claim 6, wherein A pin handle is arranged at the end of the pin shaft away from the first positioning pin.

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