Detection clamp

Abstract

The utility model discloses a detection clamp used for clamping a piece to be detected, and the piece to be detected comprises a first surface and a second surface which are oppositely arranged along a first direction, and a third surface and a fourth surface which are oppositely arranged along a second direction. The detection clamp comprises a base and a clamping assembly, the clamping assembly comprises two abutting pieces which are connected to the base and oppositely arranged in the second direction, and the two abutting pieces are used for abutting against the two ends of the to-be-detected piece respectively; each abutting piece comprises a first abutting face and a second abutting face, the two first abutting faces are used for abutting against the second face, and the two second abutting faces are used for abutting against the third face and the fourth face respectively; the clamping assembly further comprises two positioning pieces detachably connected to the base, the positioning pieces are arranged opposite to the abutting piece, and the positioning pieces can be connected with the base and abut against the first face so that the to-be-detected piece can be clamped between the abutting piece and the positioning pieces, the stability and the levelness of the to-be-detected piece can be ensured, and the clamping accuracy of the to-be-detected piece can be improved. The detection speed and the accuracy of a detection result are improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic circuit detection, in particular to a detection fixture. Background Art

[0002] In industrial production, flying probe testing is an important means of testing the performance of electronic circuits. It achieves the purpose of testing the performance of electronic circuits by contacting specific test points on electronic products with needle-shaped probes, identifying and judging the electrical properties of each test point.

[0003] When performing a flying probe test, according to the test requirements, the electronic product to be tested, such as a PCB board, needs to be clamped and fixed in a fixture so that during the test, the position of the PCB board is fixed relative to the detection device, and the detection area must be large enough to ensure that the probe can accurately contact each test point without interference, thereby improving the efficiency of the flying probe test.

[0004] At the same time, in order to adapt to PCB boards of different specifications, the test fixture should also be able to adjust the thickness of the PCB board and the width between the two sides of the clamp to achieve the purpose of clamping and tightening. In the related art, a spring push rod is used to fix the electronic product to be tested from one corner. However, when clamping a thinner base or a thicker base, this method is prone to loose clamping and poor horizontality of the base after clamping due to the small contact surface between the clamping point and the base. Therefore, when performing a flying probe test, the probe alignment accuracy is poor and the test results are inaccurate. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a testing fixture, which can be used to fasten and clamp test pieces of different specifications during testing to ensure the horizontality of the test pieces.

[0006] The detection fixture of the utility model embodiment is used to clamp a piece to be detected, the piece to be detected includes a first surface and a second surface arranged opposite to each other along a first direction, the piece to be detected includes a third surface and a fourth surface arranged opposite to each other along a second direction, the detection fixture includes a base and a clamping assembly, the clamping assembly includes two abutting members, the abutting members are connected to the base, the two abutting members are arranged opposite to each other along the second direction, and are respectively used to abut two ends of the piece to be detected; each of the abutting members includes a first abutting surface and a second abutting surface, the two first abutting surfaces are used to abut the second surface, and the two second abutting surfaces are respectively used to abut the third surface and the fourth surface; wherein the clamping assembly also includes two positioning members, along the first direction, the positioning member is arranged relative to the abutting member and is detachably connected to the base, the positioning member can be connected to the base and abut against the first surface of the piece to be detected, so that the piece to be detected is clamped between the abutting member and the positioning member.

[0007] According to the detection fixture of the embodiment of the utility model, at least the following beneficial effects are achieved: before the flying probe test, the part to be detected, such as a PCB board, is moved to the clamping assembly, and the two abutting members correspond to the two ends of the PCB board respectively. First, the PCB board is placed on the two abutting members with the back side facing downward, and the first abutting surface of each abutting member supports the back side of the PCB to ensure the overall horizontality of the PCB board. At the same time, the second abutting surface of each abutting member abuts the two side surfaces of the PCB board to achieve the limit of the two sides of the PCB board. Then, a positioning member is provided above each abutting member, and the positioning member is connected to the base and abuts against the front of the PCB board, thereby completing the clamping and fixing of the front and back sides and both sides of the PCB board, ensuring that during the flying probe test, the position of the PCB board to be detected is relatively fixed and has a high level, so that the probe can accurately grab the board at the point to be detected and perform electrical performance detection, thereby improving the detection efficiency.

[0008] According to some embodiments of the present invention, at least one of the resisting members is movably connected to the base to adjust the distance between the two resisting members.

[0009] According to some embodiments of the utility model, a receiving groove is provided on the base, and the supporting member is provided in the receiving groove; along the second direction, one of the supporting members is connected to the groove wall of the receiving groove, and the other supporting member is located in the receiving groove and can slide in the receiving groove; or, both of the supporting members can slide in the receiving groove.

[0010] According to some embodiments of the utility model, the positioning member includes a main body and a clamping portion, and the clamping portion is arranged to protrude from the main body along the first direction. When the positioning member is connected to the base, the clamping portion extends into the accommodating groove to abut the first surface.

[0011] According to some embodiments of the present invention, the clamping assembly includes at least one adjusting member, the adjusting member is movably connected to the base, and the adjusting member is connected to any one of the supporting members so that the supporting member can slide in the receiving groove.

[0012] According to some embodiments of the utility model, the adjusting member includes a limiting groove extending along the second direction, and the clamping assembly includes a fastener, which is passed through the limiting groove and connected to the base; the fastener has a tightened state and a loosened state, and in the tightened state, the fastener limits the relative displacement between the adjusting member and the base; in the loosened state, the adjusting member can move relative to the fastener and the base so that the fastener moves relative to the limiting groove along the second direction.

[0013] According to some embodiments of the utility model, the adjusting member includes a guide groove extending along the second direction, and the clamping assembly includes a guide member, which is passed through the guide groove and connected to the base; the adjusting member can move relative to the guide groove so that the guide member moves along the second direction relative to the guide groove.

[0014] According to some embodiments of the present invention, the positioning member is magnetically connected to the base, and / or the positioning member is magnetically connected to the supporting member.

[0015] According to some embodiments of the utility model, the supporting member includes a positioning surface and a limiting portion, the positioning surface is arranged on a side facing the positioning member, and the limiting portion is extended along a first direction and arranged on the positioning surface; the positioning member includes a limiting hole, and the limiting hole partially accommodates the limiting portion to fix the relative position of the positioning member and the supporting member.

[0016] According to some embodiments of the present invention, the base is provided with a plurality of the clamping assemblies.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of the structure of the detection fixture of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 The left side view of the detection fixture is shown;

[0021] Figure 3 for Figure 2 A local enlarged view of point A is shown;

[0022] Figure 4 for Figure 1 A schematic diagram showing the position relationship between the abutting member and the receiving groove;

[0023] Figure 5 for Figure 1 The schematic diagram of the positioning member structure is shown;

[0024] Figure 6 for Figure 5 A left side view of the positioning member is shown;

[0025] Figure 7 for Figure 1 A bottom view of the inspection fixture is shown;

[0026] Figure 8 for Figure 7 A schematic diagram of the structure of the regulating member is shown.

[0027] Reference numerals:

[0028] Detection fixture 10;

[0029] Base 100; first side 110; second side 120; receiving groove 130;

[0030] Clamping assembly 200; abutting member 210; a first abutting surface 211; a second abutting surface 212; a positioning surface 213; a limiting portion 214;

[0031] Positioning member 220; main body 221; clamping portion 222; limiting hole 223;

[0032] Adjusting member 230; limiting groove 231; guiding groove 232;

[0033] Fastener 240; guide member 250. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Flying probe tests for checking the performance of electronic circuits mostly use slender needle-shaped probes to contact specific test points on the flying probe test piece. The contact area is small. In order to avoid inadequate or inaccurate contact, the piece to be tested needs to be clamped on a test fixture to ensure the stability and levelness of the piece to be tested, so as to improve the test speed and the accuracy of the test results.

[0040] Reference Figures 1 to 4 The detection fixture 10 of the embodiment of the utility model is used to clamp the part to be detected. The part to be detected includes a first surface and a second surface arranged opposite to each other along a first direction, and the part to be detected includes a third surface and a fourth surface arranged opposite to each other along a second direction. The detection fixture 10 includes a base 100 and a clamping assembly 200. The base 100 is used to install the clamping assembly 200. The clamping assembly 200 includes two abutting members 210. The abutting members 210 are connected to the base 100. The two abutting members 210 are arranged opposite to each other along the second direction, and are respectively used to abut the two ends of the part to be detected to achieve the limiting of the two ends of the part to be detected; each abutting member 210 includes a first abutting surface 211 and a second abutting surface 212. The two first abutting surfaces 211 are used to abut the second surface to ensure the horizontality of the part to be detected when it is placed. The two second abutting surfaces 212 are respectively used to abut the third surface and the fourth surface, so as to limit the movement of the part to be detected along the second direction;

[0041] Among them, the clamping assembly 200 also includes two positioning members 220. Along the first direction, the positioning members 220 are arranged relative to the supporting member 210 and are detachably connected to the base 100. The positioning members 220 can be connected to the base 100 and abut against the first surface of the part to be detected so that the part to be detected is clamped between the supporting member 210 and the positioning members 220.

[0042] When the detection fixture 10 is used, the part to be detected is first placed between the two abutting members 210, and the two first abutting surfaces 211 are used to support the part to be detected, so that the part to be detected is kept horizontal relative to the second direction, so as to avoid the needle-shaped probe from contacting the test point on the part to be detected, resulting in inaccurate or inadequate contact, which affects the detection effect. Secondly, the two second abutting surfaces 212 are respectively used to abut the third surface and the fourth surface to limit the movement of the part to be detected along the second direction, reduce the displacement of the part to be detected along the second direction during the test, improve the stability of the part to be detected and the speed of the needle-shaped probe contacting the test point on the part to be detected, and improve the contact success rate. Finally, each abutting member 210 is relatively provided with a positioning member 220, and the positioning member 220 abuts against the first surface of the part to be detected, so that the part to be detected is clamped between the abutting member 210 and the positioning member 220, so as to achieve the purpose of limiting the displacement of the part to be detected along the first direction and the second direction and ensuring the horizontality of the part to be detected relative to the second direction. Based on the above method, when performing flying probe testing, after the needle probe is aligned with the test point of the component to be tested, it can accurately contact and test the electrical performance, thereby improving the testing efficiency.

[0043] It should be noted that the part to be inspected can be a PCB board, the first direction can be the thickness direction of the PCB board, and the second direction can be the length or width direction of the PCB board. Therefore, the inspection fixture 10 needs to clamp the thickness and length, or the thickness and width direction of the PCB board to enhance the stability of the PCB board during inspection, thereby improving the inspection efficiency.

[0044] In addition, the detection fixture 10 can be applied to other test items that need to meet the requirements of clamping horizontality and stability of the test piece.

[0045] Reference Figures 1 to 4 In the detection fixture 10 of the embodiment of the utility model, at least one abutting member 210 is movably connected to the base 100 to adjust the distance between the two abutting members 210. Before the flying probe test, when the detection fixture 10 is used, the distance between the two abutting members 210 can be adjusted based on the distance between the two ends of the detection room, so that the second surface of the detection part can be placed on the two first abutting surfaces 211 to ensure the placement level. At the same time, the two second abutting surfaces 212 can correspond to the third surface and the fourth surface of the detection part respectively, so as to move the abutting member 210 to respectively press the two second abutting surfaces 212 against the third surface and the fourth surface of the detection part to be detected, so as to achieve the clamping and tightening of the two sides of the detection part, and then place the positioning member 220 relative to the abutting member 210 to press against the first surface of the detection part to be detected, limit the displacement of the detection part in the first direction, and ensure the placement level, thereby improving the clamping reliability of the detection fixture 10 and ensuring that the needle probe can accurately contact the test point for testing in the subsequent test process.

[0046] In the first embodiment, the two abutting members 210 are movably connected to the base 100, and the distance between the two can be adjusted, so that when the detection fixture 10 is used, the distance between the two abutting members 210 can be quickly adjusted based on the distance between the two ends of the detected member, and the adjustment speed is faster and more flexible, so that the second surface of the detected member can be placed on the two first abutting surfaces 211 to ensure the placement level. At the same time, the two second abutting surfaces 212 can correspond to the third surface and the fourth surface of the detected member, respectively, and then, the distance between the two abutting members 210 is adjusted to press the two second abutting surfaces 212 against the third surface and the fourth surface of the detected member, respectively, to achieve clamping and tightening of the two sides of the detected member, thereby improving the clamping efficiency. This method can change the position of the clamped member to be detected relative to the base 100 by moving the two abutting members 210 relative to the base 100 according to the test requirements. Compared with the method in which the abutting members 210 are fixedly set, the clamping position change is more flexible and can meet different test requirements.

[0047] In the second embodiment, one abutting member 210 is movably connected to the base 100, and the other is fixed on the base 100. The distance between the two abutting members 210 is adjusted by adjusting the abutting member 210 movably connected to the base 100. When the detection fixture 10 is used, the third surface of the part to be detected can be abutted against the second abutting surface 212 of the abutting member 210 fixed on the base 100, and the adjustable abutting member 210 can be moved so that its second abutting surface 212 abuts against the fourth surface of the part to be detected, thereby achieving the clamping and tightening of both sides of the part to be detected and ensuring the placement level, and then, the clamping position of the part to be detected can be quickly located to improve the clamping efficiency.

[0048] It should be noted that in the above two embodiments, the positioning member 220 can be placed above the supporting member 210 when one end of the part to be detected is abutted against the first abutting surface 211 or the second abutting surface 212 of the supporting member 210, so as to clamp one end, so as to facilitate the movement of the other supporting member 210 to clamp the other end of the part to be detected, so that the part to be detected is relatively stable and the clamping efficiency is improved; the positioning member 220 can also be respectively abutted against the two ends of the part to be detected by the two abutting members 210, and after the second surface of the part to be detected is stably placed on the two first abutting surfaces 211, it is placed relative to the abutting member 210 to ensure the horizontality of the part to be detected.

[0049] Reference Figures 1 to 6In the detection fixture 10 of the embodiment of the utility model, a receiving groove 130 is provided on the base 100, and a supporting member 210 is provided in the receiving groove 130; along the second direction, one of the supporting members 210 is connected to the groove wall of the receiving groove 130, and the other supporting member 210 is located in the receiving groove 130 and can slide in the receiving groove 130, so that when the detection fixture 10 is used, one side of the to-be-detected member can be preferentially positioned. The part to be detected is first placed based on the supporting member 210 on the groove wall of the accommodating groove 130, and the two first supporting surfaces 211 both support the second surface to ensure the horizontality of the placement of the part to be detected, and the third surface is pressed against the second supporting surface 212 of the supporting member 210 on the groove wall, and the positioning member 220 is set on the supporting member 210 to achieve clamping on one side, which can not only maintain the horizontality of the placement of the part to be detected, but also avoid the part to be detected from being unable to be fixed when the first supporting surface 211 of the supporting member 210 located in the accommodating groove 130 does not abut against the second surface.

[0050] By adjusting the abutting member 210 in the receiving groove 130 to move to the second abutting surface 212 of the abutting member 210 to abut against the fourth surface, the two sides of the part to be tested are clamped tightly and the clamping efficiency is improved. Finally, a positioning member 220 is arranged relative to the abutting member 210 to limit the displacement of the part to be tested along the first direction and ensure the placement level, thereby improving the success rate of the flying probe test.

[0051] In addition, when the components to be tested with different specifications are subjected to flying probe tests in turn, only the abutting member 210 on one side needs to be adjusted, which is more convenient and quick.

[0052] In some other embodiments, a receiving groove 130 is provided on the base 100, and abutting members 210 are provided in the receiving groove 130. Along the second direction, both the abutting members 210 can slide in the receiving groove 130, so that when the detection fixture 10 is used, the distance between the two abutting members 210 can be adjusted based on the size of the detected member, so that when the detected member is placed, the first abutting surface 211 abuts against the second surface to ensure the horizontality when placed, and then the two abutting members 210 slide in the receiving groove 130 to adjust the distance between the two abutting members 210, so that the two second abutting surfaces 212 abut against the third surface and the fourth surface respectively, and after abutting, the degree of abutment of the third surface or the fourth surface can be adjusted separately according to the demand, or the position of the detected member in the receiving groove 130 can be adjusted to meet some test requirements. For example, the detected member is clamped in the middle position of the receiving groove 130. Finally, a positioning member 220 is disposed relative to the abutting member 210 to limit the displacement of the component to be tested along the first direction and ensure the placement level, thereby improving the success rate of the flying probe test.

[0053] Reference Figure 1 , Figure 3 , Figure 5 and Figure 6In the detection fixture 10 of the embodiment of the utility model, the positioning member 220 includes a main body 221 and a clamping portion 222. The clamping portion 222 is arranged to protrude from the main body 221 along the first direction. When the positioning member 220 is connected to the base 100, the clamping portion 222 extends into the receiving groove 130 to abut the first surface. When the detection fixture 10 is used, the part to be detected is placed on the two abutting members 210, and the two first abutting surfaces 211 support the second surface. The positioning member 220 is arranged above the abutting member 210 along the first direction. The clamping portion 222 on the positioning member 220 extends into the receiving groove 130 to abut the first surface to limit the part to be detected along the first direction, thereby improving the reliability and applicability of the detection fixture 10. This structure can prevent the situation where the positioning member 220 is placed on the base 100 relative to the supporting member 210 and cannot support the first side of the part to be tested when the thickness of the part to be tested is less than the depth of the accommodating groove 130, resulting in inadequate clamping. This improves the stability of clamping and ensures the smooth progress of subsequent flying probe testing.

[0054] Reference Figure 1 , Figure 3 , Figure 7 and Figure 8 In the detection fixture 10 of the embodiment of the utility model, the clamping assembly 200 includes at least one adjusting member 230, which is movably connected to the base 100, and the adjusting member 230 is connected to any abutting member 210 so that the abutting member 210 can slide in the receiving groove 130. The base 100 has a first side 110 and a second side 120 opposite to each other along the first direction. The adjusting member 230 is located at the second side 120 and connected to the abutting member 210 in the receiving groove 130. The positioning member 220 is located at the first side 110 and is arranged above the abutting member 210 along the first direction. The two do not interfere with each other, thereby ensuring the use effect of the detection fixture 10. When the detection fixture 10 is used, the part to be detected is placed between the two abutting members 210, the two first abutting surfaces 211 are used to support the part to be detected, and the two second abutting surfaces 212 correspond to the third surface and the fourth surface respectively. At the same time, from the first side 110, the positioning member 220 is placed relative to the abutting member 210, and the positioning member 220 abuts against the first surface, so that the two sides of the part to be detected are clamped and kept horizontal relative to the second direction. Then, by adjusting the adjusting member 230, the abutting member 210 connected to the adjusting member 230 is driven to move in the receiving groove 130 to adjust the distance between the two abutting members 210, so that the two second abutting surfaces 212 are respectively pressed against the third surface and the fourth surface to limit the movement of the part to be detected along the second direction, reduce the displacement of the part to be detected along the second direction during the test process, and improve the stability of the part to be detected and the speed and success rate of the needle probe contacting the test point on the part to be detected.

[0055] In some other embodiments, the adjusting member 230 is movably connected to the base 100, and each abutting member 210 is connected to the adjusting member 230, so that each abutting member 210 can slide in the receiving groove 130. The base 100 has a first side 110 and a second side 120 opposite to each other along the first direction, the adjusting member 230 is located at the second side 120 and connected to the abutting member 210 in the receiving groove 130, and the positioning member 220 is located at the first side 110 and is arranged above the abutting member 210 along the first direction, and the two do not interfere with each other, thereby ensuring the use effect of the detection fixture 10. When the detection fixture 10 is used, the part to be detected is placed between the two abutting members 210, the two first abutting surfaces 211 are used to support the part to be detected, and the two second abutting surfaces 212 correspond to the third surface and the fourth surface respectively. At the same time, from the first side 110, the positioning member 220 is placed relative to the abutting member 210, and the positioning member 220 abuts against the first surface, so that the two sides of the part to be detected are clamped and kept horizontal relative to the second direction. Then, the distance between the two abutting members 210 can be adjusted by adjusting any one of the adjusting members 230, so that the two second abutting surfaces 212 abut against the third surface and the fourth surface respectively, so as to limit the movement of the part to be detected along the second direction, thereby improving the stability of the part to be detected and the speed and success rate of the needle probe contacting the test point on the part to be detected. At the same time, this method can independently adjust the degree of tightness of the third surface or the fourth surface to avoid damage to the detected part due to over-tight clamping. Moreover, the position of the detected part in the receiving groove 130 can also be adjusted. For example, the detected part can be clamped in the middle position of the receiving groove 130 to meet some detection requirements.

[0056] Reference Figure 1 , Figure 3 , Figure 7 and Figure 8 In the detection fixture 10 of the embodiment of the utility model, the adjusting member 230 includes a limiting groove 231 extending along the second direction, and the clamping assembly 200 includes a fastener 240, which is penetrated through the limiting groove 231 and connected to the base 100; the fastener 240 has a fastened state and a loosened state. In the fastened state, the fastener 240 limits the relative displacement of the adjusting member 230 and the base 100; in the loosened state, the adjusting member 230 can move relative to the fastener 240 and the base 100, so that the fastener 240 moves along the second direction relative to the limiting groove 231.

[0057] When the detection fixture 10 is used, the fastener 240 is in a loose state. Based on the specifications of the part to be detected, the adjusting member 230 moves relative to the fastener 240 and the base 100, driving the abutting member 210 connected to the adjusting member 230 to move, changing the distance between the two abutting members 210, so as to facilitate the placement of the part to be detected. The part to be detected is placed between the two abutting members 210, and the two first abutting surfaces 211 are used to support the part to be detected. The two second abutting surfaces 212 correspond to the third surface and the fourth surface respectively. The positioning member 220 is placed relative to the abutting member 210, and the positioning member 220 abuts against the first surface, so that both sides of the part to be detected are clamped and kept horizontal relative to the second direction. Then, the adjusting member 230 can be adjusted to move relative to the fastener 240 and the base 100 so that the fastener 240 moves relative to the limiting groove 231 along the second direction, and the moving path of the adjusting member 230 is limited to avoid deviation so that when the two second abutting surfaces 212 abut against the third surface and the fourth surface respectively, the abutment is not in place, resulting in unstable clamping and affecting subsequent detection results. When the two second abutting surfaces 212 are respectively pressed against the third surface and the fourth surface, the fastener 240 is adjusted to a tightened state, limiting the relative displacement of the adjusting member 230 and the base 100, so that the clamping of the two sides of the to-be-detected part is more stable, thereby improving the clamping reliability of the detection fixture 10.

[0058] Reference Figure 1 , Figure 3 , Figure 7 and Figure 8 In the detection fixture 10 of the embodiment of the utility model, the adjustment member 230 includes a guide groove 232 extending along the second direction, and the clamping assembly 200 includes a guide member 250, which is inserted into the guide groove 232 and connected to the base 100; the adjustment member 230 can move relative to the guide member 250 and the base 100, so that the guide member 250 moves relative to the guide groove 232 along the second direction. When the detection fixture 10 is used, the part to be detected is placed between the two abutting members 210, the two first abutting surfaces 211 are used to support the part to be detected, and the two second abutting surfaces 212 correspond to the third surface and the fourth surface respectively. The positioning member 220 is placed relative to the abutting member 210, and the positioning member 220 abuts against the first surface, so that both sides of the part to be detected are clamped. Then, the adjusting member 230 is adjusted to move relative to the guide member 250 and the base 100, so that the guide member 250 moves along the second direction relative to the guide groove 232 until the two second abutting surfaces 212 respectively abut the third surface and the fourth surface, thereby ensuring the accuracy of the moving path during the adjustment process, and then ensuring the clamping accuracy after adjustment and improving the clamping effect.

[0059] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6In the detection fixture 10 of the embodiment of the utility model, one of the two positioning members 220 can be magnetically connected to the base 100, and the other can be magnetically connected to the abutting member 210, so that when the detection fixture 10 is used, the part to be detected is placed between the two abutting members 210, and the two first abutting surfaces 211 are both used to support the part to be detected. When the positioning members 220 are arranged corresponding to the abutting members 210, one positioning member 220 is magnetically connected to the base 100, and the other is magnetically connected to the abutting member 210, and both are abutted against the first surface of the part to be detected, so as to achieve clamping and fastening in the first direction between the parts to be detected. This fastening method is simple and fast, and helps to improve the clamping efficiency. It should be noted that the above-mentioned two positioning members 220 can be made of iron, and the base 100 and the abutting member 210 are provided with magnets at the positions corresponding to the positioning members 220, so that the two positioning members 220 can be connected to the base 100 and the abutting member 210 respectively by magnetic attraction. Among them, the positioning member 220 is magnetically connected to the base 100, so that the positioning member 220 can be quickly connected to various positions of the base 100, and the positioning member 220 is magnetically connected to the abutting member 210, so that the positioning member 220 can quickly position the abutting member 210 to achieve the clamping of the to-be-detected member. In some other embodiments, the two positioning members 220 are magnetically connected to the base 100. When applied to the situation where both abutting members 210 are adjustable, it is only necessary to locate the position of the abutting member 210 on the base 100 without frequent disassembly; or, in some other embodiments, the two positioning members 220 are magnetically connected to the abutting member 210, which can reduce the positioning time of the positioning member 220 and improve the clamping efficiency of the fixture.

[0060] In some other embodiments, the positioning member 220 and the base 100 are provided with relative screw holes, and the clamping assembly 200 includes a screw. When the positioning member 220 is arranged relative to the supporting member 210 and abuts against the first surface, the screw can pass through the screw holes of the two to tighten and fix the relative positions of the two.

[0061] Reference Figures 1 to 6In the detection fixture 10 of the embodiment of the utility model, the abutment 210 includes a positioning surface 213 and a limiting portion 214. The positioning surface 213 is arranged on a side facing the positioning member 220, and the limiting portion 214 is extended along the first direction and arranged on the positioning surface 213; the positioning member 220 includes a limiting hole 223, and the limiting hole 223 partially accommodates the limiting portion 214 to fix the relative position of the positioning member 220 and the abutment 210. When the detection fixture 10 is used, the part to be detected is first placed between the two abutment members 210, and the two first abutment surfaces 211 are both used to support the part to be detected so that the part to be detected remains horizontal relative to the second direction. Secondly, the two second abutment surfaces 212 are respectively used to abut the third surface and the fourth surface to limit the movement of the part to be detected along the second direction. Finally, the positioning member 220 can be placed corresponding to the positioning surface 213 of the abutting member 210, and the limiting portion 214 can be placed in the limiting hole 223 to achieve accurate positioning of the positioning member 220 and accurate clamping of the part to be detected, so that the positioning member 220 can accurately abut the first surface of the part to be detected, and then the part to be detected is clamped between the abutting member 210 and the positioning member 220, so as to limit the displacement of the part to be detected along the first direction and the second direction and ensure the horizontality of the part to be detected relative to the second direction. Improve the stability of the detection fixture 10 clamping the part to be detected, ensure the accuracy of the contact between the needle probe and the test point during the subsequent flying probe test, and improve the detection efficiency. The size of the limiting portion 214 extending along the first direction and the depth of the limiting hole 223 extending along the first direction can be designed according to the actual detection requirements, so that the limiting member can move in the limiting hole 223 along the first direction to adjust the distance between the positioning member 220 and the abutting member 210, and achieve the clamping of parts to be detected with different thicknesses.

[0062] Reference Figure 1 In the detection fixture 10 of the embodiment of the utility model, the base 100 is provided with a plurality of clamping assemblies 200, which can clamp a plurality of identical parts to be detected at one time for testing, thereby improving the detection efficiency, and can obtain a plurality of groups of detection structures at the same time for comparison, so that the detection result is more accurate. It is also possible to detect a plurality of different parts to be detected at one time, so as to compare the detection results of different parts to be detected, study the performance differences, and contribute to product development.

[0063] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A detection fixture for clamping a to-be-detected object, wherein the to-be-detected object comprises a first surface and a second surface disposed oppositely along a first direction, and the to-be-detected object comprises a third surface and a fourth surface disposed oppositely along a second direction, characterized in that: include: Pedestal; A clamping assembly, wherein the clamping assembly includes two abutting members, the abutting members are connected to the base, the two abutting members are arranged opposite to each other along the second direction, and are respectively used to abut the two ends of the to-be-detected member; each of the abutting members includes a first abutting surface and a second abutting surface, the two first abutting surfaces are used to abut the second surface, and the two second abutting surfaces are respectively used to abut the third surface and the fourth surface; In which, the clamping assembly also includes two positioning members, which are arranged relative to the supporting member along the first direction and are detachably connected to the base. The positioning member can be connected to the base and abut against the first surface of the part to be detected so that the part to be detected is clamped between the supporting member and the positioning member.

2. The detection fixture according to claim 1, characterized in that: At least one of the abutting members is movably connected to the base to adjust the distance between the two abutting members.

3. The detection fixture according to claim 1, characterized in that: The base is provided with a receiving groove, and the abutting member is arranged in the receiving groove; Along the second direction, one of the abutting members is connected to the groove wall of the accommodating groove, and the other abutting member is located in the accommodating groove and can slide in the accommodating groove; Alternatively, both of the two abutting members can slide in the receiving groove.

4. The detection fixture according to claim 3, characterized in that: The positioning member includes a main body and a clamping portion, wherein the clamping portion is arranged to protrude from the main body along the first direction. When the positioning member is connected to the base, the clamping portion extends into the accommodating groove to abut against the first surface.

5. The detection fixture according to claim 3, characterized in that: The clamping assembly includes at least one adjusting member, the adjusting member is movably connected to the base, and the adjusting member is connected to any one of the resisting members so that the resisting member can slide in the receiving groove.

6. The detection fixture according to claim 5, characterized in that: The adjusting member includes a limiting groove extending along the second direction, and the clamping assembly includes a fastener, which is passed through the limiting groove and connected to the base; the fastener has a tightened state and a loosened state, and in the tightened state, the fastener limits the relative displacement between the adjusting member and the base; in the loosened state, the adjusting member can move relative to the fastener and the base, so that the fastener moves relative to the limiting groove along the second direction.

7. The detection fixture according to claim 5, characterized in that: The adjusting member includes a guide groove extending along the second direction, and the clamping assembly includes a guide member, which is passed through the guide groove and connected to the base; the adjusting member can move relative to the guide groove so that the guide member moves along the second direction relative to the guide groove.

8. The detection fixture according to claim 1, characterized in that: The positioning member is magnetically connected to the base, and / or the positioning member is magnetically connected to the supporting member.

9. The detection fixture according to claim 1, characterized in that: The abutting member comprises a positioning surface and a limiting portion, wherein the positioning surface is arranged on a side facing the positioning member, and the limiting portion is extended along a first direction and arranged on the positioning surface; The positioning member comprises a limiting hole, and the limiting hole partially accommodates the limiting portion to fix the relative position of the positioning member and the abutting member.

10. The detection fixture according to claim 1, characterized in that: The base is provided with a plurality of the clamping assemblies.

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