A type of inward-retracting snap-lock positioning gauge

Abstract

This utility model relates to an automotive ventilation duct inspection tool, specifically a retractable snap-fit ​​positioning tool, comprising a worktable and an auxiliary positioning mechanism and a clamping mechanism mounted on the worktable for connection and adaptation to both ends of the ventilation duct. The clamping mechanism includes: a mounting frame capable of moving parallel to the insertion direction of one end of the ventilation duct, with a mounting base fixed on the mounting frame; two symmetrically arranged snap-fit ​​rods, each snap-fit ​​rod rotatably mounted on the mounting base and connected to an elastic element mounted on the mounting base, the elastic element providing opposing rotational forces to disengage from the ventilation duct; and a second locking rod mounted on the mounting frame for providing compressive force to the snap-fit ​​rods. The auxiliary positioning mechanism positions one end of the ventilation duct, and when the clamping mechanism fixes the other end of the ventilation duct, the snap-fit ​​rods can retract inward, eliminating wear caused by the snap-fit ​​rods being snapped into the ventilation duct and facilitating the removal and placement of the ventilation duct, making operation convenient.

Description

Technical Field

[0001] This utility model relates to an automotive ventilation pipe inspection tool, specifically an inward-retracting snap-lock positioning inspection tool. Background Technology

[0002] Automotive ventilation ducts are an important component of automotive air conditioning and engine systems, used to deliver air, regulate interior temperature, and expel exhaust gases.

[0003] When designing fixtures for automotive ventilation ducts, snap-fit ​​fittings must be used as the positioning reference. Previously, fixture design and manufacturing typically involved partially replicating the snap-fit ​​shape of matching components at a 1:1 scale as the positioning reference for the fixture product. In this case, it was difficult to install the ventilation duct into the fixture for measurement because the duct opening interfered with the fixture's snap-fit ​​positioning blocks. Similarly, removing the ventilation duct from the fixture was also difficult, and the product was easily damaged after removal. Utility Model Content

[0004] The purpose of this utility model is to provide an inward-retracting snap-lock positioning gauge to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a retractable snap-fit ​​positioning fixture, comprising a worktable and an auxiliary positioning mechanism and a clamping mechanism mounted on the worktable for connection and adaptation with the two ends of a ventilation duct. The clamping mechanism includes: a mounting frame capable of moving parallel to the insertion direction of one end of the ventilation duct, with a mounting base fixed on the mounting frame; two symmetrically arranged snap-fit ​​rods, which are rotatably mounted on the mounting base and connected to an elastic element mounted on the mounting base, the elastic element providing opposing rotational forces to the two snap-fit ​​rods to disengage from the ventilation duct; and a second locking rod mounted on the mounting frame for providing compressive force to the snap-fit ​​rods to engage with the ventilation duct.

[0006] As described above, the inward-retracting snap-fit ​​positioning fixture has a snap-fit ​​part at one end of the snap-fit ​​rod that engages with the snap-fit ​​part inside the ventilation pipe, and the elastic element is installed at the end of the snap-fit ​​rod away from the snap-fit ​​part.

[0007] As described above, the recessed snap-fit ​​positioning fixture has two symmetrical extension frames formed on the mounting frame. The second locking rod is threaded through the extension frame and threadedly connected to the extension frame. The end of the second locking rod is directly opposite the snap-fit ​​rod.

[0008] As described above, the inward-shrinking snap-lock positioning fixture has the following features: a clamping platform is fixed on the worktable, a receiving slide is fixed on the clamping platform, a support frame fixed to the mounting bracket passes through the receiving slide and is slidably connected to the receiving slide; a first locking rod is also threadedly connected to the receiving slide, and the first locking rod passes through the receiving slide and is inserted into the fixing hole on the support frame.

[0009] As described above, the retractable snap-fit ​​positioning fixture includes a spring, which is placed in an embedded hole formed on the mounting base and abuts against the snap-fit ​​rod.

[0010] As described above, the inward-shrinking snap-lock positioning fixture includes an auxiliary positioning mechanism comprising a positioning platform fixed on the workbench and a lower positioning component fixed on the positioning platform. An upper positioning component is detachably mounted on the end of the lower positioning component away from the positioning platform via a fixing bolt. A placement groove for placing the end of the ventilation pipe is formed between the upper positioning component and the lower positioning component.

[0011] As described above, the inward-retracting snap-lock positioning fixture is further equipped with a bottom support component for supporting the bottom of the ventilation duct.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the auxiliary positioning mechanism is set to position one end of the ventilation pipe, so that when the clamping mechanism is inserted into the other end, there will be no positional deviation that would cause wear to the ventilation pipe. When the clamping mechanism fixes the other end of the ventilation pipe, the buckle rod can retract inward, which on the one hand eliminates the wear caused by the buckle rod being fixed to the ventilation pipe, and on the other hand facilitates the removal and placement of the ventilation pipe. It is easy to operate and highly practical. Attached Figure Description

[0013] Figure 1 This is a structural diagram of a retractable snap-fit ​​positioning fixture (including a ventilation duct); Figure 2 for Figure 1 Cross-sectional view along the CC direction; Figure 3 This is a structural diagram of an inward-retracting snap-lock positioning fixture; Figure 4 This is a schematic diagram of the auxiliary positioning mechanism in an inward-retracting snap-lock positioning fixture; Figure 5 This is an exploded view of the auxiliary positioning mechanism in a retractable snap-fit ​​positioning fixture. Figure 6 This is a schematic diagram of the clamping mechanism in a retractable snap-fit ​​positioning fixture; Figure 7 This is a schematic diagram showing the separation state of the support frame and the first locking rod in the inward-retracting snap-lock positioning fixture. Figure 8This is a schematic diagram showing the separation state of the buckle rod and the mounting base in an inward-retracting buckle positioning fixture.

[0014] In the diagram: 1-Workbench; 2-Auxiliary positioning mechanism, 201-Positioning platform, 202-Bottom support, 203-Lower positioning component, 204-Upper positioning component, 205-Fixing bolt, 206-Positioning protrusion; 3-Clamping mechanism, 301-Clamping platform, 302-Support frame, 3021-Fixing hole, 303-Receiving slide, 304-First locking rod, 305-Mounting frame, 306-Second locking rod, 307-Mounting base, 308-Snap rod, 3081-Snap-on part, 309-Rotating shaft, 310-Spring; 4-Ventilation pipe. Detailed Implementation

[0015] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0016] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0017] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0018] This utility model aims to provide a positioning clamp for automotive ventilation ducts. The clamp is designed to fit the specific shape of the automotive ventilation duct. Specific implementation details are as follows: Please refer to... Figures 1-3 as well as Figures 6-8In this embodiment of the utility model, a retractable snap-fit ​​positioning fixture includes a workbench 1 and an auxiliary positioning mechanism 2 and a clamping mechanism 3 mounted on the workbench 1 and adapted to connect with both ends of a ventilation pipe 4. The clamping mechanism 3 includes: a mounting frame 305 capable of moving parallel to the insertion direction of one end of the ventilation pipe 4, with a mounting base 307 fixed on the mounting frame 305; two symmetrically arranged snap-fit ​​rods 308, which are rotatably mounted on the mounting base 307 and connected to an elastic element mounted on the mounting base 307. The elastic element provides opposing rotational forces to the two snap-fit ​​rods 308 to disengage from the ventilation pipe 4. Preferably, the elastic element includes a spring 310, which is placed in an embedded hole formed on the mounting base 307 and abuts against the snap-fit ​​rods 308; and a second locking rod 306 mounted on the mounting frame 305 to provide a pressing force to the snap-fit ​​rods 308 so that the snap-fit ​​rods 308 are snapped into the ventilation pipe 4.

[0019] The auxiliary positioning mechanism 2 is used to fix the position of one end of the ventilation pipe 4, thereby maintaining the position of the other end of the ventilation pipe 4. Then, the mounting bracket 305 moves toward the ventilation pipe 4, so that the mounting seat 307 is inserted into the ventilation pipe 4. During insertion, the end of the latching rod 308 near the ventilation pipe 4 is in a retracted state (under the action of the elastic element, the ends of the two latching rods 308 are retracted into the groove formed on the mounting seat 307). The end of the latching rod 308 near the second locking rod 306 is raised under the action of the elastic element, so that when the mounting seat 307 is inserted into the ventilation pipe 4, the presence of the latching rod 308 will not cause squeezing and wear to the ventilation pipe 4. After the mounting seat 307 is inserted into place, the second locking rod 306 is controlled to squeeze the latching rod 308, so that the position of the latching rod 308 inside the ventilation pipe 4 is engaged with the ventilation pipe 4, thereby fixing the position of the end of the ventilation pipe 4.

[0020] In this embodiment, the auxiliary positioning mechanism 2 is set to position one end of the ventilation pipe 4, so that when the clamping mechanism 3 is inserted into the other end, there will be no positional deviation that would cause wear to the ventilation pipe 4. When the clamping mechanism 3 fixes the other end of the ventilation pipe 4, the latching rod 308 can retract inward, which on the one hand eliminates the wear caused by the latching rod 308 being clamped and fixed to the ventilation pipe 4, and on the other hand facilitates the removal and placement of the ventilation pipe 4. It is easy to operate and highly practical.

[0021] It should be noted that the mounting base 307 and the latching rod 308 are rotatably connected by a rotating shaft 309. When the latching rod 308 is subjected to the squeezing force of the second locking rod 306, the latching rod 308 can rotate along the rotating shaft 309. The lever principle is used to realize the latching rod 308 to lock and fix or remove the ventilation pipe 4.

[0022] Please see Figure 6One end of the latching rod 308 is formed with a locking part 3081 that engages with the locking part inside the ventilation pipe 4, and the elastic element is installed at the end of the latching rod 308 away from the locking part 3081.

[0023] The locking part 3081 described here is designed based on the structure of the inner wall of the ventilation pipe 4, mainly to achieve effective locking and fixing of the locking rod 308 and the ventilation pipe 4. This embodiment does not specifically limit the specific structure and formation of the locking part 3081, as long as it meets the locking requirements.

[0024] Please see Figure 6 The mounting bracket 305 has two symmetrical extension brackets. The second locking rod 306 is threaded through the extension bracket and threadedly connected to the extension bracket. The end of the second locking rod 306 is directly opposite the latching rod 308.

[0025] The extension frame is L-shaped, such that the circumferential direction of the second locking rod 306 is perpendicular to the length direction of the mounting base 307, so as to ensure that a pushing force can be generated on the latching rod 308. The second locking rod 306 is a threaded rod so that the second locking rod 306 can be threadedly connected to the extension frame.

[0026] When the ventilation pipe 4 is inserted into the mounting base 307, the end of the second locking rod 306 facing the latching rod 308 is furthest from the mounting base 307. At this time, the latching rod 308 remains in contact with the second locking rod 306 under the action of the elastic element. The end of the latching rod 308 with the latching part 3081 is retracted into the groove formed on the mounting base 307. After the mounting base 307 is inserted into place, the second locking rod 306 is manually turned, thereby pushing the latching rod 308 to rotate and squeezing the elastic element, so that the latching part 3081 is latched into the ventilation pipe 4, thereby achieving fixation. When it is necessary to remove the ventilation pipe 4, simply rotate the second locking rod 306 in the opposite direction. The latching rod 308 automatically returns to the initial position under the action of the elastic element, thereby disengaging the latching part 3081 from the ventilation pipe 4, which facilitates the quick installation and removal of the ventilation pipe 4.

[0027] Please see Figure 6 and Figure 7 A clamping platform 301 is fixed on the workbench 1, and a receiving slide 303 is fixed on the clamping platform 301. A support frame 302, which is fixed to the mounting frame 305, passes through the receiving slide 303 and is slidably connected to the receiving slide 303. A first locking rod 304 is also threadedly connected to the receiving slide 303. The first locking rod 304 passes through the receiving slide 303 and is inserted into the fixing hole 3021 on the support frame 302.

[0028] The fixing hole 3021 is provided in two places, so that the support frame 302 has two placement positions. One is that the mounting seat 307 is detached from the ventilation pipe 4, and the other is that the mounting seat 307 is inserted into the ventilation pipe 4 and reaches the locking position. The position of the support frame 302 is fixed by the cooperation of the first locking rod 304 with the fixing hole 3021, thereby fixing the position of the mounting seat 307.

[0029] Further, please refer to Figure 4 and Figure 5 The auxiliary positioning mechanism 2 includes: a positioning platform 201 fixed on the workbench 1 and a lower positioning member 203 fixed on the positioning platform 201. An upper positioning member 204 is detachably installed on one end of the lower positioning member 203 away from the positioning platform 201 by a fixing bolt 205. A placement groove for placing the end of the ventilation pipe 4 is formed between the upper positioning member 204 and the lower positioning member 203.

[0030] Preferably, both the upper positioning member 204 and the lower positioning member 203 are provided with positioning protrusions 206 that engage with the inner fitting on the ventilation pipe 4. This allows the ventilation pipe 4 to be positioned and fixed after the upper positioning member 204 and the lower positioning member 203 are positioned outside the ventilation pipe 4 by fixing bolts 205. This improves the stability of the ventilation pipe 4 during processing and avoids processing errors caused by shaking or displacement of the ventilation pipe 4. In addition, the tight engagement between the positioning protrusions 206 and the inner fitting on the ventilation pipe 4 can effectively prevent the ventilation pipe 4 from falling off or shifting during processing, further improving processing efficiency and safety.

[0031] The positioning platform 201 described above is also fixed with a bottom support member 202 for supporting the bottom of the ventilation pipe 4.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A retractable buckle positioning gauge, comprising a workbench (1), an auxiliary positioning mechanism (2) and a clamping mechanism (3) installed on the workbench (1) and used for connecting and adapting with the two ports of a ventilation pipe (4), characterized in that, The clamping mechanism (3) includes: a mounting bracket (305) capable of moving parallel to the insertion direction of one end of the ventilation pipe (4), on which a mounting base (307) is fixed; two symmetrically arranged latching rods (308), which are rotatably mounted on the mounting base (307) and connected to an elastic element mounted on the mounting base (307), the elastic element providing opposing rotational forces to the two latching rods (308) to disengage from the ventilation pipe (4); and a second locking rod (306) mounted on the mounting bracket (305) for providing a squeezing force to the latching rods (308) so that the latching rods (308) are snapped into the ventilation pipe (4).

2. A retracted type buckle positioning gauge according to claim 1, wherein, One end of the latching rod (308) is formed with a locking part (3081) that engages with the locking part inside the ventilation pipe (4), and the elastic element is installed at the end of the latching rod (308) away from the locking part (3081).

3. A retracted type buckle positioning gauge according to claim 1, wherein, The mounting bracket (305) has two symmetrical extension brackets, the second locking rod (306) is threaded through the extension bracket and threadedly connected to the extension bracket, and the end of the second locking rod (306) is directly opposite the latching rod (308).

4. The retractable buckle positioning gauge according to claim 1, wherein, A clamping table (301) is fixed on the workbench (1), and a receiving slide (303) is fixed on the clamping table (301). A support frame (302) fixed to the mounting frame (305) passes through the receiving slide (303) and is slidably connected to the receiving slide (303). A first locking rod (304) is also threadedly connected to the receiving slide (303). The first locking rod (304) passes through the receiving slide (303) and is inserted into the fixing hole (3021) on the support frame (302).

5. The retractable buckle positioning gauge according to claim 1, wherein, The elastic element includes a spring (310) which is placed in an embedded hole formed on the mounting base (307) and abuts against the latching rod (308).

6. A retracted type buckle positioning gauge according to claim 1, wherein The auxiliary positioning mechanism (2) includes: a positioning platform (201) fixed on the workbench (1) and a lower positioning member (203) fixed on the positioning platform (201). The lower positioning member (203) is detachably mounted with an upper positioning member (204) at one end away from the positioning platform (201) by a fixing bolt (205). A placement groove for placing the end of the ventilation pipe (4) is formed between the upper positioning member (204) and the lower positioning member (203).

7. A retracted type buckle positioning gauge according to claim 6, wherein The positioning platform (201) is also fixed with a bottom support (202) for supporting the bottom of the ventilation pipe (4).

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