A pull-out test fixture for a buckle

Abstract

The utility model provides a kind of buckling pull-out test fixture, it is related to the mechanical test technical field of passenger car exterior product.A kind of buckling pull-out test fixture, including lower clamp, upper clamp, lower clamp cover, decorative strip buckle and bumper buckle, the decorative strip buckle is installed in the bottom of connecting clamping piece by bolt, the bumper buckle is placed in the inside of lower clamp, the lower clamp cover is covered in the top of lower clamp.The lower clamp and lower clamp cover being set to be clamped and fixed to the bumper buckle, by installing decorative strip buckle in the bottom of upper clamp, lower clamp and upper clamp are respectively installed on universal testing machine, make universal testing machine open and close in Z direction, realize the test of the insertion force and pull-out force of decorative strip buckle and bumper buckle, under the action of quick release mechanism, realize the quick separation between lower clamp and lower clamp cover, it is convenient to quickly replace decorative strip buckle.

Description

Technical Field

[0001] This utility model relates to a clamp, specifically a pull-out test clamp for a buckle, belonging to the field of mechanical testing technology for passenger vehicle exterior products. Background Technology

[0002] Exterior "Component" is a professional term in the field of mechanical engineering, published in 2013, specifically referring to decorative and functional composite structural components installed on the exterior of mechanical equipment. car Industrial sector Exterior The components mainly include cab shells, bumpers, grilles and other parts covering the outer surface of the vehicle, which are suitable for commercial vehicles such as dump trucks and tractors. The connection between plastic automotive exterior parts is mainly based on snap-fit ​​connections. During product development, it is necessary to measure the insertion force and pull-out force between the snap-fits.

[0003] Chinese Patent Publication No. CN202101925U discloses a plastic buckle insertion and extraction force test fixture, which is connected to a force gauge. It includes a pull-out force fixture and an insertion force fixture corresponding to the pull-out force fixture. One end of the pull-out force fixture has a U-shaped slot with the upper part of the slot hollowed out, and the other end is provided with a connecting post. One end of the insertion force fixture has a simulated sheet metal hole, and the other end is provided with a clamping block.

[0004] The above method involves using a handheld push-pull force gauge to pull out the parts for measurement. This method can only measure the overall pull-out force and insertion force between two parts, and cannot accurately measure the insertion force and pull-out force of a specific buckle. This is not convenient for guiding structural design. Therefore, this utility model provides a buckle pull-out test fixture. Summary of the Invention

[0005] The purpose of this utility model is to provide a buckle pull-out test fixture to solve the above-mentioned problems, so as to solve the problem that the existing technology can only measure the overall pull-out force and insertion force between two parts, but cannot accurately measure the insertion force and pull-out force of a buckle, which is not convenient for guiding the structural design.

[0006] This utility model is achieved through the following technical solution: a pull-out test fixture for a buckle, comprising a lower fixture, an upper fixture, a lower fixture cover, a decorative strip buckle, and a bumper buckle. The decorative strip buckle is installed at the bottom of the connecting clamp by bolts. The bumper buckle is placed inside the lower fixture. The lower fixture cover covers the top of the lower fixture. The bumper buckle is pressed between the lower fixture cover and the lower fixture. There are two lower fixture covers. The upper fixture is located between the two lower fixture covers. A quick-release mechanism is provided between the lower fixture cover and the lower fixture.

[0007] Preferably, a connecting clip is detachably connected to the bottom of the upper clamp by bolts, the hook end of the decorative strip buckle is clamped between the upper clamp and the connecting clip, and the other end of the decorative strip buckle is detachably connected to the bottom of the upper clamp by bolts. The decorative strip buckle is installed on the upper clamp by the connecting clip and bolts.

[0008] Preferably, the quick-release mechanism includes a connecting slide rod, and the top of the lower clamp cover has a connecting through hole. The connecting slide rod slides inside the connecting through hole. The top of the lower clamp has a limiting hole corresponding to the connecting slide rod, and the connecting slide rod is inserted into the limiting hole. The position of the lower clamp cover installed on the lower clamp is limited by the connecting slide rod and the limiting hole.

[0009] Preferably, the lower clamp has a side sliding groove inside that communicates with the limiting hole, and a sliding pin is slidably connected inside the side sliding groove. The outer surface of the connecting slide rod has a side slot, and one end of the sliding pin is inserted into the inside of the side slot. By inserting one end of the sliding pin into the inside of the side slot, the sliding upward movement of the connecting slide rod is restricted.

[0010] Preferably, one end of the sliding pin is arc-shaped, and the other end of the sliding pin is fixedly connected to a first spring. By setting the first spring, the sliding pin can quickly slide and reset when no force is applied.

[0011] Preferably, a screwing block is fixedly connected to the top of the connecting slide rod, and a second spring is provided inside the connecting through hole. The second spring is sleeved on the outer surface of the connecting slide rod. The second spring allows the connecting slide rod to slide and reset quickly when no force is applied.

[0012] Preferably, the connecting slide rod is cylindrical, and the top of the rotating block is provided with a hexagonal groove, which facilitates the rotation of the connecting slide rod.

[0013] This utility model provides a snap-fit ​​pull-out test fixture, which has the following beneficial effects: 1. This device uses a lower clamp and a lower clamp cover to clamp and fix the bumper clips. By installing the trim strip clips at the bottom of the upper clamp, and installing the lower clamp and upper clamp on a universal testing machine, the universal testing machine can open and close in the Z direction to test the insertion and extraction forces of the trim strip clips and bumper clips. Under the action of the quick-release mechanism, the lower clamp and lower clamp cover can be quickly separated, which facilitates the quick replacement of the trim strip clips.

[0014] 2. This device installs the lower clamp cover on the lower clamp, inserts the connecting slide rod on the lower clamp cover into the limiting hole, and restricts the lower clamp cover from separating from the top of the lower clamp through the side slot and sliding pin, thus completing the rapid combination of the lower clamp and the lower clamp cover. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a schematic diagram of the upper clamp and decorative strip buckle structure of this utility model; Figure 3 This is a schematic diagram of the lower clamp and bumper buckle structure of this utility model; Figure 4 For the present utility model Figure 3 Enlarged view at point A; Figure 5 This is a perspective view of the bumper buckle structure of this utility model; Figure 6 This is a perspective view of the decorative strip buckle structure of this utility model.

[0016] [Explanation of Key Component Symbols] 1. Lower clamp; 11. Restriction hole; 12. Side slide groove; 2. Upper clamp; 21. Connecting clip; 3. Lower clamp cover; 31. Connecting through hole; 4. Decorative strip buckle; 5. Bumper buckle; 6. Connecting slide bar; 61. Side slot; 7. Sliding pin. Detailed Implementation

[0017] This utility model provides a snap-on pull-out test fixture.

[0018] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A pull-out test fixture for a clip includes a lower clamp 1, an upper clamp 2, a lower clamp cover 3, a decorative strip clip 4, and a bumper clip 5. The decorative strip clip 4 is bolted to the bottom of a connecting clamp 21. The connecting clamp 21 is detachably connected to the bottom of the upper clamp 2 by bolts. The hook end of the decorative strip clip 4 is clamped between the upper clamp 2 and the connecting clamp 21. One end of the decorative strip clip 4 is bolted between the upper clamp 2 and the connecting clamp 21, and the other end of the decorative strip clip 4 is detachably bolted to the bottom of the upper clamp 2 for installation and fixation. Universal testing machineThis material testing machine integrates functions such as tension, bending, compression, shear, and ring stiffness testing. It is mainly used for mechanical property testing of metallic and non-metallic materials and is an ideal testing equipment for industrial and mining enterprises, scientific research units, colleges and universities, engineering quality supervision stations and other departments.

[0019] Please refer to it again. Figure 1 , Figure 3 and Figure 5 The bumper clip 5 is placed inside the lower clamp 1, and the lower clamp cover 3 covers the top of the lower clamp 1. The bumper clip 5 is pressed between the lower clamp cover 3 and the lower clamp 1. There are two lower clamp covers 3. The upper clamp 2 is located between the two lower clamp covers 3. By installing the lower clamp cover 3 on the top of the lower clamp 1 and pressing the bottom of the lower clamp cover 3 against the edge of the bumper clip 5, the bumper clip 5 is clamped inside the lower clamp 1 and the lower clamp cover 3.

[0020] Please refer to it again. Figure 1 , Figure 3 and Figure 4 A quick-release mechanism is provided between the lower clamp cover 3 and the lower clamp 1. The quick-release mechanism includes a connecting slide rod 6. A connecting through hole 31 is provided on the top of the lower clamp cover 3. The connecting slide rod 6 slides inside the connecting through hole 31. A limiting hole 11 corresponding to the connecting slide rod 6 is provided on the top of the lower clamp 1. The connecting slide rod 6 is inserted into the limiting hole 11. The installation position of the lower clamp cover 3 is limited by the connecting slide rod 6 and the limiting hole 11.

[0021] Please refer to it again. Figure 1 , Figure 3 and Figure 4 The lower clamp 1 has a side slide groove 12 that communicates with the limiting hole 11. A sliding pin 7 is slidably connected inside the side slide groove 12. A side slot 61 is opened on the outer surface of the connecting slide rod 6. One end of the sliding pin 7 is inserted into the side slot 61. One end of the sliding pin 7 is arc-shaped. The other end of the sliding pin 7 is fixedly connected to a first spring. When the connecting slide rod 6 is inserted into the limiting hole 11, the connecting slide rod 6 presses the arc-shaped end of the sliding pin 7, pushing the sliding pin 7 to slide into the side slide groove 12. When the connecting slide rod 6 continues to slide down and the side slot 61 aligns with the sliding pin 7, the first spring rebounds and quickly drives the sliding pin 7 into the side slot 61 to prevent the connecting slide rod 6 from being pulled out of the limiting hole 11.

[0022] Please refer to it again. Figure 1 , Figure 3 and Figure 4A screwing block is fixedly connected to the top of the connecting slide rod 6. A second spring is provided inside the connecting through hole 31. The second spring is sleeved on the outer surface of the connecting slide rod 6. The connecting slide rod 6 is cylindrical. A hexagonal groove is opened on the top of the screwing block. By pushing the connecting slide rod 6 to slide into the limiting hole 11, the sliding pin 7 is pushed into the side sliding groove 12 by pressing the arc surface of the sliding pin 7 through the side slot 61. Then, by rotating the connecting slide rod 6, the side slot 61 and the sliding pin 7 are misaligned. Then, the rebound of the second spring quickly drives the connecting slide rod 6 to slide upward, so that the lower clamp cover 3 is separated from the lower clamp 1.

[0023] Working principle: One end of the decorative strip buckle 4 is clamped between the connecting clip 21 and the bottom of the upper clamp 2 by bolts. Then, the other end of the decorative strip buckle 4 is installed at the bottom of the upper clamp 2 by bolts. Next, the bumper buckle 5 is placed inside the lower clamp 1. The lower clamp cover 3 is installed on the top of the lower clamp 1, causing the connecting slide rod 6 to be inserted into the limiting hole 11. When the connecting slide rod 6 is inserted into the limiting hole 11, the arc-shaped end of the sliding pin 7 is pushed by the connecting slide rod 6 to slide into the side groove 12. When the connecting slide rod 6 continues to slide down and the side slot 61 is aligned with the sliding pin 7, the first spring rebounds and quickly drives the sliding pin 7 into the side slot 61 to limit the connecting slide rod 6 from the limiting hole 12. The interior of the drilled hole 11 is pulled out to complete the installation of the lower clamp cover 3, so that the bumper buckle 5 is clamped between the lower clamp 1 and the lower clamp cover 3. Then, the lower clamp 1 and the upper clamp 2 are installed on the universal testing machine. The universal testing machine is used to perform fatigue tests on the decorative strip buckle 4 and the bumper buckle 5 by multiple insertion and pull-out forces. The wrench is inserted into the hexagonal groove, and the connecting slide rod 6 is pushed to slide into the limiting hole 11, so that the side slot 61 presses the arc surface of the sliding pin 7, pushing the sliding pin 7 into the interior of the side slide groove 12. Then, by rotating the connecting slide rod 6, the side slot 61 and the sliding pin 7 are misaligned. Under the rebound action of the second spring, the connecting slide rod 6 is quickly driven to slide upward, so that the lower clamp cover 3 is quickly separated from the lower clamp 1.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pull-out test fixture for a buckle, comprising a lower clamp (1), an upper clamp (2), a lower clamp cover (3), a decorative strip buckle (4), and a bumper buckle (5), characterized in that: The decorative strip buckle (4) is installed at the bottom of the connecting clip (21) by bolts. The bumper buckle (5) is placed inside the lower clamp (1). The lower clamp cover (3) covers the top of the lower clamp (1). The bumper buckle (5) is pressed between the lower clamp cover (3) and the lower clamp (1). There are two lower clamp covers (3). The upper clamp (2) is located between the two lower clamp covers (3). A quick release mechanism is provided between the lower clamp cover (3) and the lower clamp (1).

2. The pull-out test fixture for a snap-fit ​​according to claim 1, characterized in that: The bottom of the upper clamp (2) is detachably connected to a connecting clip (21) by bolts. The hook end of the decorative strip buckle (4) is clamped between the upper clamp (2) and the connecting clip (21). The other end of the decorative strip buckle (4) is detachably connected to the bottom of the upper clamp (2) by bolts.

3. The pull-out test fixture for a snap-fit ​​according to claim 1, characterized in that: The quick-release mechanism includes a connecting slide rod (6), and the top of the lower clamp cover (3) is provided with a connecting through hole (31). The connecting slide rod (6) slides inside the connecting through hole (31). The top of the lower clamp (1) is provided with a limiting hole (11) corresponding to the connecting slide rod (6), and the connecting slide rod (6) is inserted into the limiting hole (11).

4. The pull-out test fixture for a snap-fit ​​according to claim 3, characterized in that: The lower clamp (1) has a side slide groove (12) that communicates with the limiting hole (11) inside. A sliding pin (7) is slidably connected inside the side slide groove (12). A side slot (61) is provided on the outer surface of the connecting slide rod (6). One end of the sliding pin (7) is inserted into the side slot (61).

5. The pull-out test fixture for a snap-fit ​​according to claim 4, characterized in that: One end of the sliding pin (7) is arc-shaped, and the other end of the sliding pin (7) is fixedly connected to a first spring.

6. The pull-out test fixture for a snap-fit ​​according to claim 3, characterized in that: A screwing block is fixedly connected to the top of the connecting slide rod (6), and a second spring is provided inside the connecting through hole (31), which is sleeved on the outer surface of the connecting slide rod (6).

7. A pull-out test fixture for a snap-fit ​​according to claim 6, characterized in that: The connecting slide rod (6) is cylindrical, and the top of the rotating block is provided with a hexagonal groove.

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