Clamping fixture for withstand voltage test of thick-film resistor

Abstract

The utility model discloses a clamping fixture for a withstand voltage test of a thick-film resistor, and relates to the technical field of thick-film resistor voltage measurement clamping devices. When the device is used for carrying out the withstand voltage test on the thick-film resistor, the thick-film resistor to be subjected to the withstand voltage test is placed on the bottom plate, then the movable plate is driven to move through sliding of the movable rod in the guide sliding groove, the clamping plate can be driven to move in cooperation with the limiting sliding rod, and the withstand voltage test is carried out along with the movement of the clamping plate. When the thick-film resistor to be subjected to the withstand voltage test is subjected to the withstand voltage test, the insulation cushion layer contacts the thick-film resistor to be subjected to the withstand voltage test, the limiting slide rod slides in the movable plate, and the clamping plate and the insulation cushion layer can clamp the thick-film resistor to be subjected to the withstand voltage test by cooperating with the spring, so that the situation that the test value deviates due to the shaking of the thick-film resistor is reduced; and the moving rod can move in the guide chute, so that the size range of the thick-film resistor which can be clamped by the device is wide, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to thick film resistance pressure measuring clamping device technical field especially is a kind of clamping fixture for thick film resistance voltage withstanding test. BACKGROUND

[0002] Thick film resistance paste research began in the 1940s, by conductive phase (such as Ru2O, Pb2O5, Pd / Ag-PdO, etc.), glass phase (such as boron, alumino-silicate glass, borosilicate glass, etc.) and organic carrier (such as organic resin and solvent, etc.) are mixed uniformly by three-roll rolling according to certain proportion to meet the printing characteristics of paste, which is a key material for manufacturing various thick film resistors

[0003] After thick film resistance production is completed, the thick film resistance voltage withstanding test needs to be carried out, which refers to voltage breakdown test or high voltage test, however, in the prior art, there is lack of device for fixing and clamping during thick film resistance voltage withstanding test, so that when the thick film resistance position deviates during voltage withstanding test, the voltage withstanding test value will deviate.

[0004] Based on the above problems, a clamping fixture for thick film resistance voltage withstanding test is provided. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims at the defects, and mainly aims at providing a clamping fixture for thick film resistance voltage withstanding test, which aims at solving the above problems.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme: a clamping fixture for thick film resistance voltage withstanding test, comprising a base box and a bottom plate provided on the base box, two groups of guide sliding grooves are symmetrically provided on the base box and located on the two sides of the bottom plate, a moving rod is slidably connected in the two groups of guide sliding grooves, an end of the moving rod towards the bottom plate is fixedly connected with a movable plate, a clamping plate is provided on the side of the movable plate away from the moving rod, a plurality of groups of limiting slide rods are fixed on the side of the clamping plate close to the movable plate, and the plurality of groups of limiting slide rods are slidably connected with the movable plate, a spring is sleeved on each of the plurality of groups of limiting slide rods and located between the clamping plate and the movable plate, and an insulating pad layer is attached to the side of the clamping plate away from the movable plate.

[0007] As a preferred technical scheme, the insulating pad layer is made of insulating rubber.

[0008] As a preferred technical scheme, the spring has a tendency to move the clamping plate away from the movable plate.

[0009] As a preferred technical scheme, the inside of the base box is provided with a driving mechanism for driving the mirror image movement of the two groups of moving rods, the driving mechanism comprises a connecting plate, a fixed slide rod, a bidirectional threaded rod and a driving assembly, the connecting plate is fixedly arranged at one end of the moving rod inside the base box, the fixed slide rod is fixedly arranged inside the base box and is in sliding fit connection with the connecting plate, the bidirectional threaded rod is rotatably arranged inside the base box and is in threaded connection with the connecting plate, and the driving assembly is arranged outside the base box.

[0010] As a preferred technical scheme, the driving assembly comprises a motor, the motor is fixedly installed on one side of the base box, and the output end of the motor extends to the inside of the base box and is connected with the bidirectional threaded rod.

[0011] As a preferred technical scheme, the limiting slide rod is provided with a limiting block at one end of the movable plate for preventing the limiting slide rod from being separated from the movable plate.

[0012] The utility model discloses have obvious advantage and beneficial effect compared with prior art, specifically speaking, from the above technical scheme can know, it mainly is:

[0013] When the device tests the voltage resistance of the thick film resistor, the thick film resistor to be tested is placed on the bottom plate, then the moving rod slides in the guide sliding groove, thereby driving the movable plate to move, and the limiting slide rod can drive the clamping plate to move. With the movement of the clamping plate, the insulating pad layer will contact the thick film resistor to be tested. At this time, the limiting slide rod will slide in the movable plate, and the spring can clamp the thick film resistor to be tested by the clamping plate and the insulating pad layer. This reduces the shaking of the thick film resistor and the deviation of the test value. The moving rod can move in the guide sliding groove, so the device can clamp thick film resistors of a wide size range, and is more practical.

[0014] To make the structure characteristics and functions of the utility model clearer, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the vertical view structure schematic diagram of the embodiment of the utility model;

[0016] Figure 2 is the front view structure schematic diagram of the embodiment of the utility model;

[0017] Figure 3 is the top view structure schematic diagram of the embodiment of the utility model;

[0018] Figure 4 is a part structure cutaway schematic view of the embodiment of the present application.

[0019] Explanation of reference numerals: 1, base box; 2, bottom plate; 3, moving rod; 4, movable plate; 5, limiting sliding rod; 6, clamping plate; 7, spring; 8, limiting block; 9, guide sliding groove; 10, insulation cushion layer; 11, connecting plate; 12, fixed sliding rod; 13, bidirectional threaded rod; 14, motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail in combination with the drawings and the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are used only for the purpose of illustration.

[0022] Please refer to Figures 1 to 4The utility model discloses a kind of clamping fixtures for voltage withstand test of thick film resistor, including base box 1 and the bottom plate 2 being provided on base box 1, two groups of guide sliding grooves 9 are opened in mirror image on the both sides of bottom plate 2 of base box 1, the inside of two groups of guide sliding grooves 9 is slidably connected with moving rod 3, moving rod 3 is provided with two groups, in mirror image distribution in the inside of guide sliding groove 9, the end of moving rod 3 towards bottom plate 2 is fixedly connected with movable plate 4, the side of movable plate 4 away from moving rod 3 is provided with clamping plate 6, the side of clamping plate 6 close to movable plate 4 is fixed with several groups of limiting slide bar 5, limiting slide bar 5 is specifically provided with two groups, and several groups of limiting slide bar 5 are slidably connected with movable plate 4, the end of limiting slide bar 5 located in movable plate 4 is provided with limiting block 8 for preventing limiting slide bar 5 from separating from movable plate 4, several groups of limiting slide bar 5 and located between clamping plate 6 and movable plate 4 are respectively sleeved with spring 7, spring 7 has the tendency of making clamping plate 6 move away from movable plate 4, the side of clamping plate 6 away from movable plate 4 is attached with insulating pad layer 10, insulating pad layer 10 is made of insulating rubber, the condition of conducting electricity can be avoided, when thick film resistor is carried out voltage withstand test, first, the thick film resistor to be carried out voltage withstand test is placed on bottom plate 2, then sliding in the inside of guide sliding groove 9 by moving rod 3, to drive movable plate 4 to move, cooperate limiting slide bar 5 to be able to drive clamping plate 6 to move, along with the movement of clamping plate 6, insulating pad layer 10 will contact the thick film resistor to be carried out voltage withstand test, limiting slide bar 5 will slide in the inside of movable plate 4, cooperate spring 7 to be able to make clamping plate 6 and insulating pad layer 10 clamp the thick film resistor to be carried out voltage withstand test, and because moving rod 3 can move in the inside of guide sliding groove 9, so that the size range of the thick film resistor that can be clamped by the device is wide, and the practicability is stronger.

[0023] Please refer to Figures 1 to 4 The inside of base box 1 is provided with a driving mechanism for driving the mirror image movement of the two groups of moving rods 3, the driving mechanism includes a connecting plate 11, a fixed slide rod 12, a bidirectional threaded rod 13 and a driving assembly, the connecting plate 11 is fixedly arranged at one end of the moving rod 3 inside the base box 1, the fixed slide rod 12 is fixedly arranged inside the base box 1, and the fixed slide rod 12 is slidably connected with the connecting plate 11, the bidirectional threaded rod 13 is rotatably arranged inside the base box 1, and the bidirectional threaded rod 13 is threadedly connected with the connecting plate 11, the driving assembly is arranged outside the base box 1, and the driving assembly includes a motor 14, the motor 14 is fixedly installed on one side of the base box 1, and the output end of the motor 14 extends into the inside of the base box 1 and is connected with the bidirectional threaded rod 13, the bidirectional threaded rod 13 can be driven to rotate by starting the motor 14, and the two groups of connecting plates 11 distributed in mirror image are away from each other or close to each other, so that the tendency of mirror image movement of the moving rod 3 is completed.

[0024] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A clamping fixture for voltage resistance test of thick film resistor, comprising a base box (1) and a bottom plate (2) arranged on the base box (1), characterized in that: Two groups of guide sliding grooves (9) are symmetrically arranged on the base box (1) and on both sides of the bottom plate (2), the inner part of the two groups of guide sliding grooves (9) is slidably connected with a moving rod (3), one end of the moving rod (3) towards the bottom plate (2) is fixedly connected with a movable plate (4), one side of the movable plate (4) away from the moving rod (3) is provided with a clamping plate (6), a plurality of groups of limiting sliding rods (5) are fixed on the side of the clamping plate (6) close to the movable plate (4), and a plurality of groups of limiting sliding rods (5) are slidably connected with the movable plate (4), a plurality of groups of limiting sliding rods (5) and located between the clamping plate (6) and the movable plate (4) are respectively sleeved with springs (7), and the side of the clamping plate (6) away from the movable plate (4) is attached with an insulating pad (10).

2. The clamping jig for thick film resistor voltage withstanding test according to claim 1, wherein: The insulating pad (10) is made of insulating rubber.

3. The thick film resistor voltage withstand test clamping jig according to claim 1, wherein: The spring (7) has a tendency to move the clamping plate (6) away from the movable plate (4).

4. The thick film resistor voltage withstand test clamping jig according to claim 1, wherein: The inside of the base box (1) is provided with a driving mechanism for driving the mirror image movement of the two groups of moving rods (3), the driving mechanism comprises a connecting plate (11), a fixed sliding rod (12), a bidirectional threaded rod (13) and a driving assembly, one end of the connecting plate (11) is fixedly arranged in the inside of the moving rod (3) located in the base box (1), the fixed sliding rod (12) is fixedly arranged in the inside of the base box (1), and the fixed sliding rod (12) and the connecting plate (11) are slidably connected, the bidirectional threaded rod (13) is rotatably arranged in the inside of the base box (1), and the bidirectional threaded rod (13) and the connecting plate (11) are threadedly connected, and the driving assembly is arranged on the outside of the base box (1).

5. The thick film resistor voltage standoff test fixture of claim 4 wherein: The driving assembly comprises a motor (14), the motor (14) is fixedly installed on one side of the base box (1), and the output end of the motor (14) extends to the inside of the base box (1) and is connected with the bidirectional threaded rod (13).

6. The thick film resistor voltage standoff test fixture of claim 1 wherein: The limiting sliding rod (5) is provided with a limiting block (8) at one end of the movable plate (4) for preventing the limiting sliding rod (5) from being separated from the movable plate (4). The limiting sliding rod (5) is provided with a limiting block (8) at one end of the movable plate (4) for preventing the limiting sliding rod (5) from being separated from the movable plate (4).

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