A large clamping force automatic return mechanism for inverter test pins

Abstract

The utility model discloses a big clamping force automatic return mechanism for inverter test foot, include: linear reciprocating drive mechanism, linear reciprocating drive mechanism includes main part and drive end, first clamping block, first end of first clamping block with drive end fixed connection of linear reciprocating drive mechanism, the second end of first clamping block is used to from the first side of inverter test foot clamping inverter test foot, second clamping block, first end of second clamping block with main part connection or abut of linear reciprocating drive mechanism, the second end of second clamping block is used to from the two sides of inverter test foot clamping inverter test foot, first side and second side along the drive direction of linear reciprocating drive mechanism symmetrical setting. The utility model has solved the problem that the existing clamping mechanism can not find the product center automatically, and the clamping force is uneven, and the impedance is big.

Description

Technical Field

[0001] This utility model relates to the field of hot riveting equipment technology, and in particular to a hot riveting preheating device. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the performance stability and reliability of automotive inverters, as one of the core components, directly affect the power output and energy efficiency of the entire vehicle. During the research and development and production of inverters, electrical performance testing of key conductive components (such as test pins) is a crucial step in ensuring product quality. During testing, specialized fixtures are needed to reliably clamp the test pins to achieve low-impedance, high-stability electrical connections, thereby accurately acquiring test data. However, existing test pin clamping mechanisms generally suffer from the following technical defects:

[0003] Since the specifications (such as length, diameter, and shape) of inverter test pins may vary, and the clamping mechanism in the existing technology uses a fixed guide structure, it cannot automatically identify and adjust to the center position of the test pin. If the clamping position deviates from the center, it is easy to cause uneven force on the contact area between the test pin and the fixture. Local stress concentration may cause deformation or surface damage to the test pin, and it will also increase the contact resistance. Utility Model Content

[0004] The main purpose of this utility model is to provide a large clamping force automatic return mechanism for inverter test pins, which aims to solve the problems of existing clamping mechanisms being unable to automatically find the product center, uneven clamping force, and high impedance.

[0005] To achieve the above objectives, this utility model proposes a high-clamping-force automatic return mechanism for inverter test pins, comprising:

[0006] A linear reciprocating drive mechanism, comprising a main body and a drive end;

[0007] The first clamping block has its first end fixedly connected to the drive end of the linear reciprocating drive mechanism, and its second end is used to clamp the inverter test pin from the first side of the inverter test pin.

[0008] The second clamping block has its first end connected to or abutting against the main body of the linear reciprocating drive mechanism; the second end of the second clamping block is used to clamp the inverter test pin from both sides of the inverter test pin, and the first side and the second side are symmetrically arranged along the driving direction of the linear reciprocating drive mechanism.

[0009] Optionally, the linear reciprocating drive mechanism is configured as a drive cylinder.

[0010] Optionally, it further includes a first guide mechanism and a second guide mechanism, wherein the first clamping block is mounted on the sliding end of the first guide mechanism and the second clamping block is mounted on the sliding end of the second guide mechanism.

[0011] Optionally, the first guiding mechanism includes a first guide rail and a first slider, the first slider being slidably mounted on the first guide rail, the first guide rail being fixedly mounted on the second clamping block, and the first slider being fixedly connected to the first clamping block.

[0012] Optionally, the second end of the first clamping block is provided with an abutment portion for abutting against the end of the first guide rail.

[0013] Optionally, the second guide mechanism includes a second guide rail and a second slider, the second slider being slidably mounted on the second guide rail, the second guide rail being mounted on a fixed plate, and the second slider being fixedly connected to the second clamping block.

[0014] Optionally, a fixing block is provided on the fixing plate, and an elastic element abuts between the fixing block and the second clamping block.

[0015] Optionally, the elastic element is configured as a spring.

[0016] Optionally, the fixing plate is further provided with a limiting block for abutting against the first end of the second slider.

[0017] Optionally, both the first clamping block and the second clamping block are equipped with conductive blocks for contacting the inverter test pins, and the conductive blocks have contoured grooves adapted to the shape of the inverter test pins.

[0018] The beneficial effects of this utility model are as follows: It improves the structure of the existing clamping mechanism. By using a pneumatic spring to synchronously control two clamping blocks to clamp symmetrically from both sides of the test foot, the two clamping blocks can be centered and clamped to the test foot. This solves the problem that the existing clamping mechanism cannot automatically adjust the center, avoids local stress concentration on the test foot caused by clamping position offset, and ensures uniform force on the contact area, significantly reducing contact resistance. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is the main view of the automatic return mechanism of this utility model;

[0021] Figure 2 This is an isometric view of the automatic return mechanism of this utility model;

[0022] Label Explanation:

[0023] 1. Linear reciprocating drive mechanism; 11. Main body; 12. Drive end;

[0024] 2. First clamping block; 21. Abutment part;

[0025] 3. Second clamping block;

[0026] 4. First guiding mechanism; 41. First guide rail; 42. First slider;

[0027] 5. Second guide mechanism; 51. Second guide rail; 52. Second slider;

[0028] 6. Fixing plate; 61. Fixing block; 62. Elastic element; 63. Limiting block;

[0029] 7. Conductive block; 71. Contouring groove.

[0030] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] 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.

[0032] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0033] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] One embodiment of this utility model proposes a high-clamping-force automatic return mechanism for inverter test pins, referencing... Figure 1 and Figure 2 ,include:

[0035] A linear reciprocating drive mechanism 1, which includes a main body 11 and a drive end 12;

[0036] The first clamping block 2 has its first end fixedly connected to the drive end 12 of the linear reciprocating drive mechanism 1, and its second end is used to clamp the inverter test pin from the first side of the inverter test pin.

[0037] The second clamping block 3 has its first end connected to or abutting against the main body 11 of the linear reciprocating drive mechanism 1; the second end of the second clamping block 3 is used to clamp the inverter test pin from both sides of the inverter test pin, and the first side and the second side are symmetrically arranged along the driving direction of the linear reciprocating drive mechanism 1.

[0038] It should be noted that when the test foot is clamped by the clamping mechanism of this embodiment, the test foot moves to the clamping position, so that it is located between the first clamping block 2 and the second clamping block 3. The position of the test foot is fixed and cannot be moved. At this time, referring to the figure, the first clamping block 2 and the second clamping block 3 are symmetrically distributed on the left and right sides of the test foot, while the linear reciprocating drive mechanism 1 is suspended in the air (i.e., the linear reciprocating drive mechanism 1 can move freely). When clamping is required, the drive end 12 of the linear reciprocating drive mechanism 1 retracts (retracts to the right in the figure), causing the first clamping block 2 to slide to the right. When the first clamping block 2 abuts against the test foot, the first clamping block 2 is pressed against the fixed position of the test foot. At this time, the retraction action of the drive end 12 of the linear reciprocating drive mechanism 1 is restricted, but the retraction of the linear reciprocating drive mechanism 1 is not completed. Free movement allows the main body 11 of the linear reciprocating drive mechanism 1 to slide to the left to compensate for the completion of the overall stroke movement of the linear reciprocating drive mechanism 1. At this time, since the second clamping block 3 is connected to or abuts against the main body 11 of the linear reciprocating drive mechanism 1, it will slide to the left along with the main body 11, thereby abutting the second clamping block 3 against the test foot. When the stroke movement of the linear reciprocating drive mechanism 1 is completed, the first clamping block 2 and the second clamping block 3 clamp from both sides of the test foot respectively, completing the clamping action. This structure in this embodiment is not affected by the size error of the test foot, and can ensure that the two clamping blocks always clamp the test foot, ensuring that the two are forcibly aligned and clamp the center area of ​​the test foot. This completely solves the problem that the traditional fixed guide structure cannot automatically adjust the center, avoids local stress concentration of the test foot caused by clamping position offset, and ensures uniform force in the contact area, significantly reducing contact resistance and improving the stability of electrical connection. When it is necessary to cancel the clamping action, the linear reciprocating drive mechanism 1 only needs to drive its drive end 12 to extend or retract, which can complete the opening of the first clamping block 2 and the second clamping block 3, contacting and clamping the test foot.

[0039] Furthermore, the linear reciprocating drive mechanism 1 is configured as a drive cylinder. In this embodiment, the linear reciprocating drive mechanism 1 is configured as a cylinder, and the retraction motion of the cylinder has a fixed shape, which can better adapt to the clamping operation of the first clamping block 2 and the second clamping block 3 in this application. Moreover, the air pressure of the drive cylinder is adjustable, which can provide a stable large clamping force to the test foot and ensure the stability of the clamping force.

[0040] Furthermore, it also includes a first guide mechanism 4 and a second guide mechanism 5. The first clamping block 2 is mounted on the sliding end of the first guide mechanism 4, and the second clamping block 3 is mounted on the sliding end of the second guide mechanism 5. During the clamping of the inverter test pin, the first clamping block 2 and the second clamping block 3 need to move accurately along a specific direction to achieve a stable and reliable clamping action. The first guide mechanism 4 and the second guide mechanism 5 provide precise linear motion guidance for the first clamping block 2 and the second clamping block 3. Due to the function of the guide mechanism, the first clamping block 2 and the second clamping block 3 will not deviate, wobble, or tilt during the movement, ensuring that the second end of the clamping block can accurately contact the first and second sides of the inverter test pin, thus improving the clamping accuracy.

[0041] Furthermore, the first guiding mechanism 4 includes a first guide rail 41 and a first slider 42. The first slider 42 is slidably mounted on the first guide rail 41, and the first guide rail 41 is fixedly mounted on the second clamping block 3. The first slider 42 is fixedly connected to the first clamping block 2. The structure of the first guide rail 41 and the first slider 42 is relatively simple and robust, and can withstand a certain amount of pressure and friction. During long-term use, this structure can reduce wear on the first clamping block 2 during movement and reduce the risk of component damage due to unstable movement.

[0042] Furthermore, the second guiding mechanism 5 includes a second guide rail 51 and a second slider 52. The second slider 52 is slidably mounted on the second guide rail 51, which is mounted on a fixed plate 6. The second slider 52 is fixedly connected to the second clamping block 3. The structure of the second guide rail 51 and the second slider 52 is relatively simple and robust, capable of withstanding certain pressure and friction. During long-term use, this structure can reduce wear on the first clamping block 2 during movement and reduce the risk of component damage due to unstable movement. Simultaneously, this embodiment adds a fixed plate 6, which is fixed in position and cannot move. The main body 11 of the linear reciprocating drive mechanism 1 is connected to or abuts against the second clamping block 3. The second clamping block 3 is slidably connected to the fixed plate 6 via the second slider 52 and the second guide rail 51, thereby facilitating the free sliding of the main body 11 of the linear reciprocating drive mechanism 1, thus enabling the clamping action of the second clamping block 3.

[0043] Furthermore, the second end of the first clamping block 2 is provided with an abutment portion 21 for abutting against the end of the first guide rail 41. A fixing block 61 is provided on the fixing plate 6, and an elastic element 62 abuts between the fixing block 61 and the second clamping block 3. The fixing plate 6 is also provided with a limiting block 63 for abutting against the first end of the second slider 52. In this embodiment, the abutment portion 21 is provided at the second end of the first clamping block 2, and an elastic element 62 is provided between the second clamping block 3 and the fixing block 61, which facilitates the positional restoration of the first clamping block 2 and the second clamping block 3. Specifically, refer to... Figure 1 The elastic element 62 is set as a spring. At this time, the figure shows the initial position. The second end of the first clamping block 2 abuts against the first guide rail 41, and the second end of the second clamping block 3 abuts against the limiting block 63. As mentioned above, when the driving end 12 of the linear reciprocating drive mechanism 1 moves to the right to complete the clamping of the first clamping block 2 and the second clamping block 3, the first clamping block 2 moves to the right, and the second clamping block 3 moves to the left. At this time, the first clamping block 2 separates from the end of the first guide rail 41, and the second clamping block 3 separates from the limiting block 63. The spring is compressed. When it is necessary to release the test foot, the first clamping block 2 moves to the left under the action of the driving end 12 of the linear reciprocating drive mechanism 1. Since the elastic restoring force of the spring can push the second clamping block 3 to the right, the first clamping block 2 and the second clamping block 3 are restored to the initial position.

[0044] Furthermore, both the first clamping block 2 and the second clamping block 3 are equipped with conductive blocks 7 for contacting the inverter test pins. The conductive blocks 7 have contoured grooves 71 that conform to the shape of the inverter test pins. During inverter testing, it is necessary to ensure a low-impedance, highly stable electrical connection between the test pins and the clamps to accurately acquire test data. The conductive blocks 7 have excellent conductivity, effectively reducing contact resistance and minimizing energy loss and signal interference during current transmission. When the first clamping block 2 and the second clamping block 3 clamp the inverter test pins, the conductive blocks 7 are in direct contact with the test pins, ensuring smooth current flow, improving the stability of the electrical connection, and avoiding problems such as inaccurate test data or test failures due to poor contact.

[0045] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A high clamp force auto-return mechanism for an inverter test foot, characterized by, include: A linear reciprocating drive mechanism, comprising a main body and a drive end; The first clamping block has its first end fixedly connected to the drive end of the linear reciprocating drive mechanism, and its second end is used to clamp the inverter test pin from the first side of the inverter test pin. The second clamping block has its first end connected to or abutting against the main body of the linear reciprocating drive mechanism; the second end of the second clamping block is used to clamp the inverter test pin from both sides of the inverter test pin, and the first side and the second side are symmetrically arranged along the driving direction of the linear reciprocating drive mechanism.

2. The high clamp force auto-return mechanism for an inverter test foot of claim 1, wherein, The linear reciprocating drive mechanism is configured as a drive cylinder.

3. The high clamp force auto-return mechanism for an inverter test foot of claim 2, wherein, It also includes a first guide mechanism and a second guide mechanism, wherein the first clamping block is installed on the sliding end of the first guide mechanism and the second clamping block is installed on the sliding end of the second guide mechanism.

4. The high clamp force auto-return mechanism for an inverter test foot of claim 3, wherein, The first guiding mechanism includes a first guide rail and a first slider. The first slider is slidably mounted on the first guide rail, the first guide rail is fixedly mounted on the second clamping block, and the first slider is fixedly connected to the first clamping block.

5. The high clamp force auto-return mechanism for an inverter test foot of claim 4, wherein, The second end of the first clamping block is provided with an abutment portion for abutting against the end of the first guide rail.

6. The high clamp force auto-return mechanism for an inverter test foot of claim 3, wherein, The second guiding mechanism includes a second guide rail and a second slider. The second slider is slidably mounted on the second guide rail, the second guide rail is mounted on a fixed plate, and the second slider is fixedly connected to the second clamping block.

7. The high clamp force auto-return mechanism for an inverter test foot of claim 6, wherein, A fixing block is provided on the fixing plate, and an elastic element abuts between the fixing block and the second clamping block.

8. The high clamp force auto-return mechanism for an inverter test foot of claim 7, wherein, The elastic element is configured as a spring.

9. The high clamp force auto-return mechanism for an inverter test foot of claim 6, wherein, The fixing plate is also provided with a limiting block for abutting against the first end of the second slider.

10. The high clamp force auto-return mechanism for an inverter test foot of claim 1, wherein, Both the first clamping block and the second clamping block are equipped with conductive blocks for contacting the inverter test pins, and the conductive blocks have contoured grooves that are adapted to the shape of the inverter test pins.

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