Clamp device and capacitance test equipment

Abstract

The utility model relates to the technical field of manufacturing and production of semiconductors, in particular to a clamp device and capacitance testing equipment. When the second clamping plate and the first clamping plate move oppositely in the containing cavity, the first clamping block of the first clamp moves towards the capacitor and gradually abuts against the capacitor on the side, away from the groove bottom of the containing groove, of the capacitor, so that the capacitor is located at the first interval. A second clamping block of the second clamp moves towards the capacitor to push the capacitor to move in the direction of the accommodating groove at the first interval; and the capacitor is fixed in the accommodating groove under the opposite matching of the first clamping block and the second clamping block. As the capacitor is placed in the accommodating groove and is propped against the bottom of the accommodating groove, the first clamping block is propped against one side, deviating from the accommodating groove, of the capacitor, and the first connecting block and the second clamping block are arranged on the two sides, in the direction of the accommodating groove, of the capacitor to prop against the side surface of the capacitor, the risk that the capacitor is clamped away and flies can be reduced in the clamping process of the capacitor.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor manufacturing and production, and particularly relates to a fixture device and a capacitance testing device. Background Art

[0002] A capacitor is an energy storage component composed of two conductor plates and a dielectric, generally represented by the symbol C. It has the characteristics of passing alternating current and blocking direct current, and is widely used in energy storage, filtering, bypassing, tuning, decoupling, frequency division and other fields in modern electronic circuits, playing an extremely important role. Electrostatic discharge (English full name: Electrostatic Discharge, abbreviated as ESD) is a charge transfer phenomenon, usually artificially generated, such as in the processes of production, assembly, testing, storage, etc., causing static electricity to accumulate in the human body, equipment or instruments. When contacting these accumulated charges, there will be a discharge path, forming an electrostatic current. The transient voltage of this static electricity is very high, reaching several thousand volts or even dozens of kilovolts, which is the main reason for device damage in electronic products. Therefore, it is necessary to use an electrostatic generator (electrostatic gun) to generate an electrostatic waveform for testing. However, during the clamping process of small patch capacitors, when the clamping force is not properly controlled or the operation is not standardized, the sample capacitor is always clamped and flown away, seriously affecting the testing efficiency. Summary of the Utility Model

[0003] The purpose of this application is to provide a fixture device and a capacitance testing device.

[0004] This application provides a fixture device, including: a base, the base includes a receiving cavity, and the side wall of the receiving cavity forms a receiving groove; a first clamping member, the first clamping member includes a first clamping plate and a first fixture, the first clamping plate is movably arranged in the receiving cavity, the first fixture includes a first connecting block and a first clamping block, the first connecting block connects the first clamping plate, at least part of the first connecting block is inserted into the receiving groove, the first clamping block is connected to the first connecting block and extends along a first direction, and the first clamping block is spaced from the bottom of the receiving groove to form a first gap; a second clamping member, the second clamping member includes a second clamping plate and a second fixture, the second clamping plate is movably arranged in the receiving cavity, the second fixture includes a second connecting block and a second clamping block, the second connecting block connects the second clamping plate, at least part of the second connecting block is inserted into the receiving groove, and the second clamping block is connected to the second connecting block and extends along the first direction; wherein, the second clamping plate and the first clamping plate move towards or away from each other in the receiving cavity, so that the second clamping block can extend into the first gap.

[0005] In an exemplary embodiment of the present application, in the first direction, there are a plurality of the receiving grooves, the plurality of the receiving grooves are arranged at intervals, and the widths of the plurality of the receiving grooves gradually increase; in the first direction, there are a plurality of the first clamps and the second clamps, and one of the first clamps and one of the second clamps are correspondingly arranged in each of the receiving grooves. In the second direction, the heights of the first intervals corresponding to the plurality of the first clamping blocks gradually increase, and in the second direction, the heights of the plurality of the second clamping blocks gradually increase. The first direction is perpendicular to the second direction.

[0006] In an exemplary embodiment of the present application, at least one of the first clamping block and the second clamping block forms an insulating layer, and the insulating layer is located on a side of the first clamping block facing the second clamping block; and / or, the insulating layer is located on a side of the second clamping block facing the first clamping block.

[0007] In an exemplary embodiment of the present application, two sliding grooves are formed in the base along the first direction, and the two sliding grooves are respectively located on two sides of the receiving cavity. A partition plate is arranged between the sliding groove and the receiving cavity, and the partition plate forms a first hole portion; the clamping device includes a slider and a push rod. The slider is located in the sliding groove, the slider is connected to the push rod, and the push rod passes through the first hole portion and is connected to the first clamping plate, and / or, the push rod passes through the first hole portion and is connected to the second clamping plate.

[0008] In an exemplary embodiment of the present application, a slide rail is formed on a side wall of the sliding groove along the first direction, a limiting plate is formed on a side of the slide rail facing away from the partition plate, a limiting block is formed on the slider, and the limiting block is located in the slide rail and moves in the slide rail under the limiting action of the limiting plate and the partition plate.

[0009] In an exemplary embodiment of the present application, the clamping device further includes a first elastic member, the first elastic member is sleeved on the push rod, one side of the first elastic member abuts against the partition plate, and one side of the first elastic member abuts against the slider.

[0010] In an exemplary embodiment of the present application, the clamping device further includes a pressing plate and a connecting rod. The connecting rod is connected to the slider on a side of the slider facing away from the push rod, and the pressing plate is connected to the connecting rod on a side of the connecting rod facing away from the slider.

[0011] In an exemplary embodiment of the present application, the base forms a second hole portion communicating with the slide rail, and the clamping device further includes a limiting component, and the limiting component is arranged in the second hole portion and abuts against the limiting block.

[0012] In an exemplary embodiment of the present application, a limiting tooth is formed on one side of the limiting block facing the second hole portion; the limiting component includes a pull rod, a second elastic member, a cover plate and a baffle. The pull rod is inserted into the second hole portion, and a limiting point is formed on one side of the pull rod facing the second hole portion. The limiting point can be engaged with the limiting tooth. The baffle is fixedly sleeved on one side of the pull rod close to the limiting point. The cover plate is fixedly arranged in the second hole portion. The pull rod movably passes through the cover plate, and the cover plate is located on the side of the pull rod away from the limiting point. The second elastic member is located between the baffle and the cover plate.

[0013] The present application also provides a capacitance testing device, including the fixture device described above.

[0014] A fixture device and a capacitance testing device according to the solution of the present application have the following beneficial effects: A capacitor is placed in the accommodation groove. The first clamping plate and the second clamping plate are movably arranged in the accommodation cavity. The second clamping plate and the first clamping plate move towards or away from each other in the accommodation cavity, respectively driving the first fixture and the second fixture to move in the accommodation groove. When the second clamping plate and the first clamping plate move towards each other in the accommodation cavity, the first clamping block of the first fixture moves towards the capacitor and gradually abuts against the capacitor on one side away from the bottom of the accommodation groove of the capacitor, so that the capacitor is located at the first interval. Since the second clamping block can extend into the first interval, the second clamping block of the second fixture moves towards the capacitor and can push the capacitor to move in the direction of the accommodation groove at the first interval; under the cooperation of the first clamping block and the second clamping block moving towards each other, the capacitor is fixed in the accommodation groove. Since the capacitor is placed in the accommodation groove and is abutted by the bottom of the groove, there is a first clamping block abutting against the capacitor on the side of the capacitor away from the accommodation groove, and there are a first connecting block and a second clamping block abutting against the side surfaces of the capacitor on both sides in the direction of the accommodation groove. During the process of clamping the capacitor, the risk of the capacitor being clamped and flying away can be reduced.

[0015] Other features and advantages of the present application will become apparent from the following detailed description, or will be partially learned through the practice of the present application.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of a fixture device in an embodiment of the present invention;

[0019] Figure 2 is a schematic structural view of the base in an embodiment of the present utility model;

[0020] Figure 3 is a schematic view of the first clamping plate and the second clamping plate moving towards each other in an embodiment of the present utility model;

[0021] Figure 4 is a schematic view of the first clamping plate and the second clamping plate moving away from each other in an embodiment of the present utility model;

[0022] Figure 5 is an exploded schematic view of a fixture device in an embodiment of the present utility model.

[0023] Explanation of reference numerals:

[0024] 10. Base; 11. Accommodating cavity; 12. Accommodating groove; 13. Sliding groove; 131. Slide rail; 132. Limiting plate; 14. Partition plate; 141. First hole part; 15. Second hole part; 20. First clamping member; 21. First clamping plate; 22. First fixture; 221. First connecting block; 222. First clamping block; 223. First interval; 30. Second clamping member; 31. Second clamping plate; 32. Second fixture; 321. Second connecting block; 322. Second clamping block; 40. Insulating layer; 50. Slide block; 51. Limiting block; 511. Limiting teeth; 60. Push rod; 70. First elastic member; 81. Pressure plate; 82. Connecting rod; 90. Limiting assembly; 91. Pull rod; 92. Second elastic member; 93. Cover plate; 94. Baffle plate. Detailed implementation manners

[0025] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.

[0026] In addition, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of the embodiments of this application. However, those skilled in the art will realize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of this application.

[0027] The present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted here that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as a limitation to the present application.

[0028] It should be noted that: "a plurality of" mentioned in this article refers to two or more than two. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0029] A capacitor is an energy storage element composed of two conductor plates and a dielectric, generally represented by the symbol C. It has the characteristics of passing alternating current and blocking direct current and is widely used in energy storage, filtering, bypassing, tuning, decoupling, frequency division and other fields in modern electronic circuits, playing an extremely important role. Electrostatic discharge (English full name: Electrostatic Discharge, abbreviated as ESD) is a charge transfer phenomenon, usually artificially generated. For example, during processes such as production, assembly, testing, and storage, static electricity accumulates in the human body, equipment, or instruments. When contacting these accumulated charges, there will be a discharge path, forming an electrostatic current. The transient voltage of this static electricity can be very high, reaching several thousand volts or even dozens of kilovolts, which is the main reason for device damage in electronic products. Therefore, it is necessary to use an electrostatic generator (electrostatic gun) to generate an electrostatic waveform for testing. However, during the clamping process of small patch capacitors, when the clamping force is not properly controlled or the operation is not standardized, the sample capacitor is always clamped and flown away, seriously affecting the test efficiency.

[0030] According to the generation method of static electricity and different damage modes to the circuit, it is usually divided into the following four models, namely the Human-Body Model, the Machine Model, the Charge-Device Model, and the Field-Induced Model. Usually, an electrostatic generator (electrostatic gun) is used to generate an electrostatic waveform for testing in product testing.

[0031] To solve the above technical problems, refer to Figures 1 to 4As shown in the figure, the present application provides a fixture device, which includes a base 10, a first clamping member 20 and a second clamping member 30. The base 10 includes a receiving cavity 11, and the side wall of the receiving cavity 11 forms a receiving groove 12; the first clamping member 20 includes a first clamping plate 21 and a first fixture 22. The first clamping plate 21 is movably arranged in the receiving cavity 11. The first fixture 22 includes a first connecting block 221 and a first clamping block 222. The first connecting block 221 is connected to the first clamping plate 21, and at least part of the first connecting block 221 is inserted into the receiving groove 12. The first clamping block 222 is connected to the first connecting block 221 and extends along the first direction. The first clamping block 222 is spaced from the bottom of the receiving groove 12 to form a first gap 223; the second clamping member 30 includes a second clamping plate 31 and a second fixture 32. The second clamping plate 31 is movably arranged in the receiving cavity 11. The second fixture 32 includes a second connecting block 321 and a second clamping block 322. The second connecting block 321 is connected to the second clamping plate 31, and at least part of the second connecting block 321 is inserted into the receiving groove 12. The second clamping block 322 is connected to the second connecting block 321 and extends along the first direction; wherein, the second clamping plate 31 and the first clamping plate 21 move towards or away from each other in the receiving cavity 11, so that the second clamping block 322 can extend into the first gap 223.

[0032] Referring to Figure 2 As shown in the figure, a capacitor is placed in the receiving groove 12. The first clamping plate 21 and the second clamping plate 31 are movably arranged in the receiving cavity 11. The second clamping plate 31 and the first clamping plate 21 move towards or away from each other in the receiving cavity 11, respectively driving the first fixture 22 and the second fixture 32 to move in the receiving groove 12. Referring to Figure 3 As shown in the figure, when the second clamping plate 31 and the first clamping plate 21 move towards each other in the receiving cavity 11, the first clamping block 222 of the first fixture 22 moves towards the capacitor and gradually abuts against the capacitor on the side away from the bottom of the receiving groove 12 of the capacitor, so that the capacitor is located at the first gap 223. Since the second clamping block 322 can extend into the first gap 223, the second clamping block 322 of the second fixture 32 moves towards the capacitor and can push the capacitor to move along the first direction at the first gap 223; under the mutual cooperation of the first clamping block 222 and the second clamping block 322, the capacitor is fixed in the receiving groove 12. Referring to Figure 4 As shown in the figure, after the detection is completed, the first clamping member 20 and the second clamping member 30 move in the reverse direction, and the capacitor in the receiving groove 12 can be taken out and replaced. Since the capacitor is placed in the receiving groove and is abutted by the bottom of the groove, there is a first clamping block 222 abutting against the side of the capacitor away from the receiving groove 12, and there are a first connecting block 221 and a second clamping block 322 abutting against the side surfaces of the capacitor along the direction of the receiving groove 12. During the process of clamping the capacitor, the risk of the capacitor being clamped and flying away can be reduced.

[0033] In some embodiments, the base 10 is made of an insulating material, and the first clamping member 20 and the second clamping member 30 are made of a conductive material. During testing, the electrostatic generator energizes the first clamping plate 21 and the second clamping plate 31. The current of the first clamping plate 21 is connected to the capacitor through the first connection block 221 and the first clamping block 222, and the current of the second clamping plate 31 is connected to the capacitor through the second connection block 321 and the second clamping block 322, so as to test the electrostatic discharge of the capacitor.

[0034] In some embodiments, the width and depth of the receiving groove 12 match the size of the capacitor package to achieve the purpose of fixing the capacitor. In the second direction, the height of the first interval 223 matches the height of the capacitor package to be able to stably support the capacitor.

[0035] In some embodiments, the capacitor is a chip ceramic capacitor. Like resistors, chip ceramic capacitors have standard package specifications (inch system), that is, the first two digits represent the length and the last two digits represent the width. Common packages are 0402, 0603, 0805, and 1206, etc. Since capacitors have a breakdown voltage, exceeding the breakdown limit will cause the capacitor to be damaged, resulting in abnormal circuit functions and affecting the use. Therefore, it is necessary to detect electrostatic discharge to reduce the impact on circuit functions.

[0036] In some embodiments, referring to Figure 3 and Figure 4 As shown, the first connection block 221 is connected to the first clamping block 222 in an "L" shape, and the second connection block 321 is connected to the second clamping block 322 also in an "L" shape. A conductive adhesive can be provided on the side of the second clamping block 322 facing away from the second connection block 321, and a conductive adhesive can also be provided on the side of the first connection block 221 facing the first interval 223, which can play a buffering role during the clamping process of the capacitor and reduce damage to the capacitor.

[0037] In some embodiments, in the first direction, referring to Figure 2 As shown, there are multiple receiving grooves 12, and the multiple receiving grooves 12 are arranged at intervals, and the widths of the multiple receiving grooves 12 gradually increase; referring to Figure 3 and Figure 4As shown, in the first direction, there are multiple first clamps 22 and second clamps 32. In each accommodating groove 12, one first clamp 22 and one second clamp 32 are correspondingly arranged. In the second direction, the heights of the first clamping blocks 222 of the multiple first clamps 22 gradually increase, and the heights of the second clamping blocks 322 of the multiple second clamps 32 gradually increase. The first direction is perpendicular to the second direction. The first direction is along the length direction of the base 10, and the second direction is along the height direction of the base 10. According to the packaging size of the capacitor, multiple matching accommodating grooves 12 can be set, and the height of the first interval 223 and the second clamping block 322 of the second clamp 32 gradually increases, so as to keep the second clamping block 322 capable of matching the height of the first interval 223, so as to be able to match capacitors of different packaging sizes and improve the compatibility and efficiency of the fixture device.

[0038] In some embodiments, referring to Figure 3 and Figure 4 As shown, at least one of the first clamping block 222 and the second clamping block 322 forms an insulating layer 40. The insulating layer 40 is located on the side of the first clamping facing the second clamping block 322; and / or, the insulating layer 40 is located on the side of the second clamping block 322 facing the first clamping block 222. When the capacitor is tested, the first clamping plate 21 and the second clamping plate 31 are energized. The function of the insulating layer 40 is to isolate the current between the first clamping block 222 and the second clamping block 322 and prevent short circuit after the first clamping block 222 and the second clamping block 322 overlap.

[0039] In some embodiments, referring to Figure 5 As shown, two sliding grooves 13 are formed on the base 10 along the first direction. The two sliding grooves 13 are respectively located on both sides of the accommodating cavity 11. An isolation plate 14 is provided between the sliding groove 13 and the accommodating cavity 11, and the isolation plate 14 forms a first hole portion 141; the fixture device includes a slider 50 and a push rod 60. The slider 50 is located in the sliding groove 13. The slider 50 is connected to the push rod 60, and the push rod 60 passes through the first hole portion 141 and is connected to the first clamping plate 21, and / or, the push rod 60 passes through the first hole portion 141 and is connected to the second clamping plate 31. Specifically, the notch of the sliding groove 13 and the opening of the accommodating cavity 11 face the same side. The two sliding grooves 13 are arranged on both sides of the accommodating cavity 11 to form different regions through the isolation plate 14. The sliding groove 13 is used for the slider 50 to slide therein, and the accommodating cavity 11 is used for the first clamping member 20 and the second clamping member 30 to move towards or away from each other. Moreover, the slider 50 is connected to the first clamping member 20 and the second clamping member 30 through the push rod 60. When the slider 50 moves in the sliding groove 13, it can drive the first clamping member 20 and the second clamping member 30 to move in the accommodating cavity 11.

[0040] In some embodiments, referring to Figure 5As shown, a slide rail 131 is formed on the side wall of the chute 13 along the first direction. A limiting plate 132 is formed on the side of the slide rail 131 away from the partition plate 14. A limiting block 51 is formed on the slider 50. The limiting block 51 is located in the slide rail 131 and moves in the slide rail 131 under the limiting action of the limiting plate 132 and the partition plate 14. Specifically, the chute 13 has two side walls perpendicular to the bottom of the chute. Then the slide rail 131 is arranged on the two side walls. The slide rail 131 can be set as a groove structure with a fixed track. The limiting block 51 can be a block structure protruding to one side. At least part of the limiting block 51 moves along the track of the slide rail 131 in the chute 13.

[0041] In some embodiments, referring to Figure 5 As shown, the clamping device further includes a first elastic member 70. The first elastic member 70 is sleeved on the push rod 60. One side of the first elastic member 70 abuts against the partition plate 14, and one side of the first elastic member 70 abuts against the slider 50. The first elastic member 70 can be a spring or a plastic elastic member. When the slider 50 moves towards the accommodating cavity 11, the first elastic member 70 is compressed. When the slider 50 moves away from the accommodating cavity 11, the first elastic member 70 extends. The compression and extension of the first elastic member 70 assist the slider 50 to move in the slide rail 131.

[0042] In some embodiments, referring to Figure 5 As shown, the clamping device further includes a pressing plate 81 and a connecting rod 82. The connecting rod 82 is connected to the slider 50 on the side of the slider 50 away from the push rod 60. The pressing plate 81 is connected to the connecting rod 82 on the side of the connecting rod 82 away from the slider 50. By applying pressure to the pressing plate 81, the pressure is transmitted to the slider 50 through the connecting rod 82. When the slider 50 moves towards the accommodating cavity 11 under the action of the pressure, the first elastic member 70 is compressed. When the pressure on the pressing plate 81 disappears, the first elastic member 70 extends to reset the slider 50, thereby driving the first clamping member 20 and the second clamping member 30 to reset.

[0043] In some embodiments, referring to Figure 5As shown, the base 10 is formed with a second hole portion 15 communicating with the slide rail 131. The fixture device further includes a limit assembly 90, and the limit assembly 90 is disposed in the second hole portion 15 to abut against the limit block 51. Specifically, a limit tooth 511 is formed on one side of the limit block 51 facing the second hole portion 15; the limit assembly 90 includes a pull rod 91, a second elastic member 92, a cover plate 93 and a baffle 94. The pull rod 91 is inserted into the second hole portion 15, and a limit point is formed on one side of the pull rod 91 facing the second hole portion 15. The limit point can be engaged with the limit tooth 511. The baffle 94 is fixedly sleeved on one side of the pull rod 91 close to the limit point. The cover plate 93 is fixedly disposed in the second hole portion 15. The pull rod 91 movably passes through the cover plate 93, and the cover plate 93 is located on the side of the pull rod 91 away from the limit point. The second elastic member 92 is located between the baffle 94 and the cover plate 93. Under the action of the second elastic member 92, the baffle 94 moves in the direction towards the limit tooth 511, thereby driving the limit point of the pull rod 91 to move towards the limit tooth 511. When the limit point is engaged with the limit tooth 511, the movement of the slider 50 in the slide rail 131 can be restricted, so as to maintain the clamping state of the capacitor; a pulling force is provided to the pull rod 91 to move it to the side away from the limit tooth 511, and the limit point moves away from the limit tooth 511 under the action of the pulling force, thereby canceling the restriction on the slider 50 and enabling it to move in the slide rail 131. Cooperating with the first limiting member, the slider 50 can move in the direction away from the accommodating cavity 11 under the action of the first elastic member 70, so as to reset the slider 50. Specifically, the second elastic member 92 can be a spring or a plastic elastic member.

[0044] In some embodiments, a wedge-shaped structure or a conical structure, etc. is formed at the end of the pull rod 91 by processes such as cutting, and the limit point can be the end point of the wedge-shaped structure or the conical structure.

[0045] In the present application, the combination of the "L-shaped" first clamping plate 21 and the second clamping plate 31 makes the capacitor firmly clamped, not easily clamped offset, not easily clamped and flown during the clamping process, and at the same time enables the capacitor to be completely wrapped, not easily affected by environmental factors during the electrostatic discharge test process, and can well ensure the stability and accuracy of the test data. The combination of the first elastic member 70 and the conductive adhesive can play a buffering role when clamping the capacitor, thereby reducing the stress of the clamping plate during the clamping process and reducing the damage to the capacitor. The limit assembly 90 can lock the slider 50 during the movement of the slider 50. Such a design is convenient and simple to operate, and improves the test efficiency of the capacitor.

[0046] The present application further provides a capacitor testing device, including a fixture device.

[0047] In this application, unless otherwise clearly defined and limited, terms such as "provided with" and "connected" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] In the description of this specification, the description with reference to terms such as "some embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment are included in at least one embodiment of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and the description of this application shall fall within the scope covered by the patent of this application.

Claims

1. A fixture device, characterized in that, include: A base, the base comprising a receiving cavity, a side wall of the receiving cavity forming a receiving groove; A first clamping member, the first clamping member comprises a first clamping plate and a first clamp, the first clamping plate is movably arranged in the accommodating cavity, the first clamping member comprises a first connecting block and a first clamping block, the first connecting block is connected to the first clamping plate, at least a portion of the first connecting block is inserted into the accommodating groove, the first clamping block is connected to the first connecting block and extends along a first direction, and the first clamping block and the groove bottom of the accommodating groove are spaced apart to form a first gap; a second clamping member, the second clamping member comprising a second clamping plate and a second clamp, the second clamping plate being movably disposed in the accommodating cavity, the second clamping member comprising a second connecting block and a second clamping block, the second connecting block being connected to the second clamping plate, at least a portion of the second connecting block being inserted into the accommodating groove, and the second clamping block being connected to the second connecting block and extending along the first direction; The second clamping plate and the first clamping plate move toward or away from each other in the accommodating cavity, so that the second clamping block can extend into the first interval.

2. The clamp device according to claim 1, characterized in that: In the first direction, there are a plurality of the accommodating grooves, the plurality of the accommodating grooves are arranged at intervals, and the widths of the plurality of the accommodating grooves gradually increase; In the first direction, there are multiple first clamps and multiple second clamps, and each of the accommodating grooves is provided with a corresponding first clamp and a corresponding second clamp. In the second direction, the heights of the first intervals corresponding to the multiple first clamping blocks gradually increase, and the heights of the multiple second clamping blocks gradually increase in the second direction, and the first direction is perpendicular to the second direction.

3. The jig device according to claim 1, characterized in that, At least one of the first clamping block and the second clamping block forms an insulating layer, and the insulating layer is located on a side of the first clamping block facing the second clamping block; and / or the insulating layer is located on a side of the second clamping block facing the first clamping block.

4. The clamp device according to claim 1, characterized in that: The base is formed with two slide grooves along the first direction, the two slide grooves are respectively located at two sides of the accommodating cavity, an isolation plate is provided between the slide groove and the accommodating cavity, and the isolation plate forms a first hole portion; The clamp device includes a slider and a push rod, wherein the slider is located in the slide groove, the slider is connected to the push rod, the push rod passes through the first hole portion to connect to the first clamping plate, and / or the push rod passes through the first hole portion to connect to the second clamping plate.

5. The jig device according to claim 4, wherein, The side wall of the slide groove forms a slide rail along the first direction, a limiting plate is formed on the side of the slide rail away from the isolation plate, the slider forms a limiting block, the limiting block is located in the slide rail, and the limiting block moves in the slide rail under the limiting action of the limiting plate and the isolation plate.

6. A fixture device according to claim 4, characterized in that, The clamp device further comprises a first elastic member, which is sleeved on the push rod, one side of the first elastic member abuts against the isolation plate, and one side of the first elastic member abuts against the sliding block.

7. The jig device according to claim 4, characterized in that, The clamp device further comprises a pressing plate and a connecting rod. The connecting rod is connected to the slider at a side of the slider away from the push rod, and the pressing plate is connected to the connecting rod at a side of the connecting rod away from the slider.

8. The jig device according to claim 5, characterized in that, The base is formed with a second hole portion connected to the slide rail, and the clamp device further includes a limiting assembly, which is arranged in the second hole portion and abuts against the limiting block.

9. The clamp device according to claim 8, characterized in that: The limiting block is formed with limiting teeth on one side facing the second hole portion; The limiting assembly includes a pull rod, a second elastic member, a cover plate and a baffle plate. The pull rod is inserted into the second hole portion. A limiting point is formed on the side of the pull rod facing the second hole portion. The limiting point can be engaged with the limiting tooth. The baffle plate is fixedly sleeved on a side of the pull rod close to the limiting point. The cover plate is fixed in the second hole portion. The pull rod movably passes through the cover plate, and the cover plate is located on the side of the pull rod away from the limiting point. The second elastic member is located between the baffle plate and the cover plate.

10. A capacitance testing device, characterized in that, A clamp device comprising any one of claims 1 to 9.

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