Fatigue testing device for conductive elastic sheet processing

Abstract

The utility model relates to a fatigue testing device for conductive elastic sheet processing, which comprises a base frame, a limiting mechanism is arranged on the surface of the base frame, a plurality of conductive elastic sheet bodies are clamped on the inner side of the limiting mechanism, and a pressure applying mechanism is arranged at the tops of the plurality of conductive elastic sheet bodies; the limiting mechanism comprises a limiting frame, the limiting frame is fixed to the surface of the base frame, a rotating rod penetrates through the interior of the limiting frame, the rotating rod is effectively driven to rotate by rotating the rotating handle, and therefore the set of limiting plates on the surface of the same positive and negative thread section are driven to be away from or close to each other; the distance between a set of limiting plates on the surface of the same positive and negative threaded section is adjusted, conductive elastic piece bodies of different sizes can be clamped in a matched mode, then a first hydraulic cylinder effectively drives a movable plate and a limiting rod to move downwards, and therefore the top of one side of each conductive elastic piece body is limited; and the limiting mechanism can quickly limit and fix the plurality of conductive elastic sheet bodies, so that the test efficiency is improved while the operation is relatively convenient.

Description

Technical Field

[0001] This utility model relates to the field of conductive spring processing technology, and in particular to a fatigue testing device for conductive spring processing. Background Technology

[0002] Metal conductive springs are an important component of switches. They are mainly used in membrane switches, contact switches, PCB boards, FPC boards, and other products. To ensure the safe use of metal conductive springs after manufacturing, their fatigue strength is tested using fatigue testing equipment before they leave the factory.

[0003] Patent CN210221681U discloses a spring fatigue strength testing device, including a base plate. A first connecting plate is fixedly connected to the upper left side of the base plate. A cylinder is fixedly connected to the upper right side of the first connecting plate. A second connecting plate is fixedly connected to the lower end of the cylinder's transmission rod. A first ball bearing is embedded in the middle of the left side of the second connecting plate. The left side of the first ball bearing is movably inserted into the interior of a sliding groove, which is located on the lower right side of the first connecting plate. A pressure plate is fixedly connected to the lower right side of the second connecting plate. A plurality of second balls bearings are equidistantly embedded in the middle of the lower end of the pressure plate. A connecting frame is fixedly connected to the upper right side of the base plate. A fixing block is fixedly connected to the left end of the connecting frame via a screw. This spring fatigue strength testing device, through its overall structure, can conveniently detect the fatigue of elastic springs; and through its structure with a fixing block, connecting block, and insertion groove, it can conveniently install and disassemble helical springs.

[0004] However, the aforementioned device for testing the fatigue strength of shrapnel still has the following shortcomings:

[0005] The aforementioned device uses a screw to limit the movement of the spring piece, which is cumbersome to disassemble and assemble. In addition, only one spring piece can be tested at a time, which reduces the testing efficiency. Therefore, we propose a fatigue testing device for the processing of conductive spring pieces. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a fatigue testing device for the processing of conductive spring sheets. This device solves the technical problems of the current device, which uses a screw to limit the spring sheet, making disassembly and assembly cumbersome, and only allows testing of a single spring sheet at a time, thus reducing testing efficiency.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a fatigue testing device for processing conductive spring sheets is designed, including a base frame, a limiting mechanism is provided on the surface of the base frame, a plurality of conductive spring sheet bodies are clamped inside the limiting mechanism, and a pressure applying mechanism is provided on the top of the plurality of conductive spring sheet bodies.

[0008] The limiting mechanism includes a limiting frame, which is fixed to the surface of the base frame. A rotating rod passes through the inside of the limiting frame, and a handle is fixedly connected to the end of the rotating rod. Several limiting plates are sleeved on the surface of the rotating rod. A set of first hydraulic cylinders is symmetrically arranged on the inner side of the top of the limiting frame. A movable plate is connected to the movable end of the first hydraulic cylinder. Several limiting rods are uniformly fixed to one side of the movable plate. A limiting block is fixedly provided on the inner side of the limiting plate.

[0009] Preferably, the rotating rod surface is provided with several identical positive and negative thread segments, and a set of limiting plates is symmetrically sleeved on the surface of each positive and negative thread segment. A conductive spring body is sandwiched between the set of limiting plates on the same positive and negative thread segment surface.

[0010] Preferably, the limiting rod is connected to the limiting frame via a movable plate, a first hydraulic cylinder, and a lifting structure, and the number of the limiting rod is the same as the number of the conductive spring body.

[0011] Preferably, the limiting plate and the limiting block are integrally formed, and the surface of the conductive spring sheet body is in contact with the surfaces of the limiting plate and the limiting block.

[0012] Preferably, the pressure applying mechanism includes a second hydraulic cylinder, a group of the second hydraulic cylinders are symmetrically arranged on the inner side of the top of the base frame, the movable end of the second hydraulic cylinder is connected to a pressure plate, and a plurality of pressure rods are uniformly fixed at the bottom of the pressure plate.

[0013] Preferably, the pressure rod is connected to the base frame via a pressure plate, a second hydraulic cylinder to form a lifting structure, and the bottom of the pressure rod is in contact with the top of the conductive spring body.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model effectively drives the rotating rod to rotate by rotating the handle, thereby causing a set of limiting plates on the same positive and negative threaded section surface to move away from or closer to each other, thus adjusting the spacing between the set of limiting plates on the same positive and negative threaded section surface. This facilitates the clamping of conductive spring bodies of different sizes. Then, the first hydraulic cylinder effectively drives the movable plate and the limiting rod to move down, thereby limiting the top of one side of the conductive spring body. The limiting mechanism can quickly realize the limiting and fixing of several conductive spring bodies, which is more convenient and improves the testing efficiency.

[0016] 2. In this utility model, while maintaining the pressure rod in contact with the top of the conductive spring body, the second hydraulic cylinder effectively drives the pressure plate and pressure rod to move up and down, thereby realizing the reciprocating compression of the conductive spring body. After reaching the required number of compressions for testing, several conductive spring bodies are removed, and the dimensional changes of several conductive spring bodies are measured, thereby determining the fatigue strength of several conductive spring bodies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0019] Figure 3 This is a partial structural diagram of the present invention.

[0020] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0021] In the diagram: 1. Base frame; 2. Limiting mechanism; 3. Conductive spring body; 4. Pressure application mechanism;

[0022] 201. Limiting frame; 202. Rotating rod; 203. Rotary handle; 204. Limiting plate; 205. First hydraulic cylinder; 206. Movable plate; 207. Limiting rod; 208. Limiting block;

[0023] 401. Second hydraulic cylinder; 402. Pressure plate; 403. Pressure rod. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] A fatigue testing device for the processing of conductive spring sheets, see [link to relevant documentation]. Figures 1 to 4 It includes a base frame 1, a limiting mechanism 2 on the surface of the base frame 1, a plurality of conductive spring sheet bodies 3 sandwiched inside the limiting mechanism 2, and a pressure applying mechanism 4 on the top of the plurality of conductive spring sheet bodies 3.

[0026] The limiting mechanism 2 includes a limiting frame 201, which is fixed to the surface of the base frame 1. A rotating rod 202 passes through the limiting frame 201, and a handle 203 is fixedly connected to the end of the rotating rod 202. Several limiting plates 204 are sleeved on the surface of the rotating rod 202. The surface of the rotating rod 202 has several identical positive and negative thread segments. A set of limiting plates 204 is symmetrically sleeved on the surface of each positive and negative thread segment. A conductive spring body 3 is sandwiched between a set of limiting plates 204 on the surface of the same positive and negative thread segment. A set of first hydraulic cylinders 2 are symmetrically arranged on the inner side of the top of the limiting frame 201. 05. The movable end of the first hydraulic cylinder 205 is connected to a movable plate 206. Several limiting rods 207 are evenly fixed on one side of the movable plate 206. Furthermore, the limiting rods 207 form a lifting structure through the movable plate 206, the first hydraulic cylinder 205 and the limiting frame 201. The number of limiting rods 207 is the same as that of the conductive spring body 3. A limiting block 208 is fixed on the inner side of the limiting plate 204. Furthermore, the limiting plate 204 and the limiting block 208 are integrally formed. The surface of the conductive spring body 3 is in contact with the surface of the limiting plate 204 and the limiting block 208. This invention effectively drives the rotating rod 202 to rotate by rotating the handle 203, thereby causing a set of limiting plates 204 on the same positive and negative threaded section surface to move away from or closer to each other, thus adjusting the distance between the set of limiting plates 204 on the same positive and negative threaded section surface. This facilitates the clamping of conductive spring bodies 3 of different sizes. Then, the first hydraulic cylinder 205 effectively drives the movable plate 206 and the limiting rod 207 to move down, thereby limiting the top of one side of the conductive spring body 3. The limiting mechanism 2 can quickly realize the limiting and fixing of several conductive spring bodies 3, which is more convenient and improves the testing efficiency.

[0027] It is worth noting that the pressure applying mechanism 4 includes a second hydraulic cylinder 401. A set of second hydraulic cylinders 401 are symmetrically arranged on the inner side of the top of the base frame 1. The movable end of the second hydraulic cylinder 401 is connected to a pressure plate 402. Several pressure rods 403 are uniformly fixed at the bottom of the pressure plate 402. The pressure rods 403 form a lifting structure with the base frame 1 through the pressure plate 402, the second hydraulic cylinder 401, and the bottom of the pressure rods 403 are in contact with the top of the conductive spring body 3. In this utility model, while maintaining the pressure rods 403 in contact with the top of the conductive spring body 3, the second hydraulic cylinder 401 effectively drives the pressure plate 402 and the pressure rods 403 to move up and down, realizing the reciprocating compression of the conductive spring body 3. After reaching the required number of compressions for the test, several conductive spring bodies 3 are removed, and the dimensional changes of several conductive spring bodies 3 are measured, thereby determining the fatigue strength of several conductive spring bodies 3.

[0028] Working principle: By rotating the handle 203, the rotating rod 202 is rotated, thereby causing a set of limiting plates 204 on the same positive and negative threaded section surface to move away from or closer to each other, thus adjusting the distance between the set of limiting plates 204 on the same positive and negative threaded section surface to fit and clamp a conductive spring body 3 of a certain size. Then, the first hydraulic cylinder 205 drives the movable plate 206 and the limiting rod 207 to move down, thereby limiting the top of one side of the conductive spring body 3. The limiting mechanism 2 can quickly realize the limiting and fixing of several conductive spring bodies 3. Then, while maintaining the pressure rod 403 in contact with the top of the conductive spring body 3, the second hydraulic cylinder 401 drives the pressure plate 402 and the pressure rod 403 to move up and down, realizing the reciprocating compression of the conductive spring body 3. After reaching the required number of compressions for testing, several conductive spring bodies 3 are removed, and the dimensional changes of several conductive spring bodies 3 are measured, thereby determining the fatigue strength of several conductive spring bodies 3.

[0029] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A fatigue testing device for processing conductive spring sheets, comprising a base frame (1), characterized in that, The base frame (1) is provided with a limiting mechanism (2) on its surface. A plurality of conductive spring bodies (3) are clamped inside the limiting mechanism (2). A pressure applying mechanism (4) is provided on the top of the plurality of conductive spring bodies (3). The limiting mechanism (2) includes a limiting frame (201), which is fixed to the surface of the base frame (1). A rotating rod (202) runs through the inside of the limiting frame (201). A handle (203) is fixed to the end of the rotating rod (202). Several limiting plates (204) are sleeved on the surface of the rotating rod (202). A set of first hydraulic cylinders (205) are symmetrically arranged on the inner side of the top of the limiting frame (201). A movable plate (206) is connected to the movable end of the first hydraulic cylinder (205). Several limiting rods (207) are evenly fixed to one side of the movable plate (206). A limiting block (208) is fixed to the inner side of the limiting plate (204).

2. The fatigue testing device for conductive spring processing as described in claim 1, characterized in that, The rotating rod (202) has several identical positive and negative thread segments on its surface. Each positive and negative thread segment is symmetrically fitted with a set of limiting plates (204). A conductive spring body (3) is sandwiched between a set of limiting plates (204) on the same positive and negative thread segment surface.

3. The fatigue testing device for conductive spring processing as described in claim 1, characterized in that, The limiting rod (207) forms a lifting structure through the movable plate (206), the first hydraulic cylinder (205) and the limiting frame (201). The number of the limiting rod (207) is the same as that of the conductive spring body (3).

4. The fatigue testing device for conductive spring processing as described in claim 1, characterized in that, The limiting plate (204) and the limiting block (208) are integrally formed, and the surface of the conductive spring body (3) is in contact with the surface of the limiting plate (204) and the limiting block (208).

5. The fatigue testing device for conductive spring sheet processing as described in claim 1, characterized in that, The pressure applying mechanism (4) includes a second hydraulic cylinder (401). A group of second hydraulic cylinders (401) are symmetrically arranged on the inner side of the top of the base frame (1). The movable end of the second hydraulic cylinder (401) is connected to a pressure plate (402). Several pressure rods (403) are uniformly fixed at the bottom of the pressure plate (402).

6. The fatigue testing device for conductive spring processing as described in claim 5, characterized in that, The pressure rod (403) forms a lifting structure with the pressure plate (402), the second hydraulic cylinder (401) and the base frame (1), and the bottom of the pressure rod (403) is in contact with the top of the conductive spring body (3).

Images