Filter test tool

Abstract

The utility model relates to a filter test tool, belongs to the technical field of filter test, and solves the problems of unstable filter clamping and low test efficiency in the existing filter test. The clamping device comprises a bottom plate, a clamping plate and a clamping assembly. The clamping plate and the clamping assembly are sequentially arranged in the length direction of the bottom plate. The clamping plates are used for clamping a filter and comprise the first clamping plate and the second clamping plate. The clamping assembly is connected with the first clamping plate; the clamping assembly is used for clamping the clamping plate; the bottom plate is provided with a first sliding groove and a second sliding groove. A protrusion is arranged on the lower portion of the second clamping plate and can slide in the first sliding groove and the second sliding groove so as to drive the second clamping plate to slide on the bottom plate. Screw grooves are formed in the positions, corresponding to the first sliding grooves, of the lower portion of the bottom plate and used for inserting screws to fix the second clamping plate. According to the utility model, filters with different sizes can be tested, the clamping is stable, and the testing efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a filter testing tool. Background Art

[0002] A filter is a circuit composed of capacitors, inductors, and resistors. Current filter testing challenges stem from poor fixture fixturing, which can easily cause vibration and affect test accuracy. Furthermore, test efficiency is low, making it difficult to quickly switch between multiple filter test tasks. Utility Model Content

[0003] In view of the above analysis, an embodiment of the present utility model aims to provide a filter testing tool to solve the problems of unstable fixation and low testing efficiency in existing filter testing.

[0004] The purpose of this utility model is mainly achieved through the following technical solutions:

[0005] A filter testing fixture comprises a base plate, a clamping plate and a clamping assembly;

[0006] The clamping plate and the clamping assembly are sequentially arranged along the length direction of the base plate;

[0007] The clamping plate is used to clamp the filter, and the clamping plate includes a first clamping plate and a second clamping plate; the clamping assembly is connected to the first clamping plate; the clamping assembly is used to clamp the clamping plates;

[0008] The bottom plate is provided with a first sliding groove and a second sliding groove; the lower part of the second clamping plate is provided with a protrusion, and the protrusion can slide in the first sliding groove and the second sliding groove to drive the second clamping plate to slide on the bottom plate.

[0009] Furthermore, a screw groove is provided at the lower portion of the base plate at a position corresponding to the first sliding groove, for inserting a screw to fix the second clamping plate, and the clamping assembly includes a first clamping assembly; the first clamping assembly includes a locker.

[0010] Furthermore, the clamping assembly also includes a second clamping assembly, which includes a fixed plate, a slider and a first spring; the fixed plate is fixed to one end of the base plate; the slider is fixed to the clamping plate; one end of the first spring is fixed to the fixed plate, and the other end is fixed to the slider.

[0011] Furthermore, the clamping plate also includes a third clamping plate, which is used to press the top of the filter; the third clamping plate can slide up and down along the second clamping plate.

[0012] Furthermore, the clamping assembly also includes a third clamping assembly, and the third clamping assembly includes a top plate and a telescopic structure; the top plate is arranged on the upper part of the third clamping plate, and one end of the top plate is fixed to the second clamping plate.

[0013] Furthermore, the telescopic structure is arranged between the top plate and the third clamping plate, and the telescopic structure includes a telescopic rod, a sleeve and a second spring.

[0014] Furthermore, the sleeve is arranged at the lower part of the top plate, and the telescopic rod is arranged at the upper part of the third clamping plate; the telescopic rod can slide in the sleeve; and the second spring is arranged between the sleeve and the telescopic rod.

[0015] Furthermore, it also includes a limiting structure, which includes a stopper and a baffle; grooves are provided on both sides of the upper part of the sliding block, and a stopper is provided at the mouth of the groove, and the stopper can move in the groove.

[0016] Furthermore, the limiting structure also includes a third spring; one end of the third spring is fixed to the bottom of the groove, and the other end is fixed to the stopper; when the third spring is at its natural length, the stopper can extend out of the groove.

[0017] Furthermore, the limiting structure further includes baffles, which are arranged on both sides of the bottom plate, and the positions of the baffles correspond to the sliding blocks.

[0018] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0019] (1) In the present invention, a clamping plate 1 and a clamping plate 2 are used to clamp the filter. A first slide groove and a second slide groove as well as a screw groove are provided at corresponding positions of the clamping plate 2 on the bottom plate. The position of the clamping plate 2 can be adjusted according to the size of the filter to adapt to different filters, thereby improving the flexibility of the test fixture.

[0020] (2) The second clamping assembly in the present invention can clamp the filter steadily due to the clamping force of the spring, thereby reducing shaking during the test and improving the stability of the filter during the test. At the same time, the filter can be automatically clamped for disassembly through the compression and elastic force of the spring, thereby improving the test efficiency and achieving rapid and stable fixation of the filter.

[0021] (3) Compared with the prior art, the present invention provides a third clamping assembly. A third clamping plate is provided on the top of the filter to press the top of the filter. In order to avoid the side close to the second clamping plate being pressed and the other side being tilted, a top plate is provided on the third clamping plate. The spring telescopic structure between the top plate and the clamping plate allows the third clamping plate to press the top of the filter, thereby increasing the fitting area between the third clamping plate and the top of the filter. Indirectly, the bottom of the filter is also more fitted with the bottom plate. By increasing the fitting area between the top and bottom of the filter, the two sides and the upper and lower four sides of the filter are pressed, making the filter more stably fixed.

[0022] (4) Compared with the prior art, in order to prevent the filter from being damaged by the excessive clamping force of the spring when the filter is disassembled, the present invention uses a limiting structure in the second clamping structure. The block is pressed into the groove to pass through the baffle; by releasing the block, the clamping of the slider and the clamping plate is blocked to remove the filter to protect the filter. The operation is simple and convenient, and the flexibility of the device is improved.

[0023] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following content, and some advantages will become apparent from the description or be understood through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the text and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the accompanying drawings, the same reference symbols denote the same components.

[0025] Figure 1 This is a schematic diagram of the tooling structure of Example 1;

[0026] Figure 2 This is a schematic diagram of the bottom plate structure from above in Example 1;

[0027] Figure 3 This is a bottom view of the bottom plate structure of Example 1;

[0028] Figure 4 This is a schematic diagram of the state structure of the tooling clamping the filter in Example 1;

[0029] Figure 5 This is a schematic diagram of the tooling structure of Example 2;

[0030] Figure 6 This is a schematic diagram of the front view of the tooling of Example 2;

[0031] Figure 7 This is a structural diagram of the third splint, the top plate, and the telescopic structure of the second embodiment;

[0032] Figure 8 This is a schematic diagram of the tooling structure of Example 3;

[0033] Figure 9 This is a schematic diagram of the block and groove structure of Example 3.

[0034] Reference numerals:

[0035] 1-bottom plate, 101-first slide groove, 102-second slide groove, 103-screw groove, 2-splint, 201-splint one, 202-splint two, 2021-third slide groove, 2022-fourth slide groove, 203-splint three, 3-clamping assembly, 31-first clamping assembly, 32-second clamping assembly, 321-fixed plate, 322-slider, 323-first spring, 33-third clamping assembly, 331-top plate, 332-telescopic structure, 3321-telescopic rod, 3322-sleeve, 3323-second spring, 4-buffer pad, 5-connector, 6-filter, 7-limiting structure, 701-block, 702-third spring, 703-baffle. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0037] Example 1

[0038] A specific embodiment of the present invention is as follows Figure 1 As shown, a filter 6 test fixture is disclosed, including a base plate 1, a clamping plate 2 and a clamping assembly 3.

[0039] The base plate 1 is a rectangular plate used to support the entire tooling. The upper part of the base plate 1 is sequentially provided with a clamping plate 2 and a clamping assembly along the length direction.

[0040] The clamping assembly 3 is used to clamp the clamping plate 2. The clamping assembly 3 includes a first clamping assembly 31. In this embodiment, the first clamping assembly 31 is a locker and a push rod. There are two lockers, which are fixed to the end of the base plate 1 in parallel along the width direction of the base plate 1.

[0041] Clamping plate 2, consisting of clamping plate 1 201 and clamping plate 202, is used to clamp filter 6. Clamping plate 1 201 and clamping plate 202 are vertically arranged on base plate 1. Each clamping plate 2 has a threaded hole at its lower portion for connecting connector 5. The connector 5 of clamping plate 1 201 is used to insert a test cable, while the connector 5 of clamping plate 2 202 is used to insert the leads of filter 6 to test the electrical characteristics of filter 6.

[0042] The push rod of the locking device passes through the first clamping plate 201 and extends between the first clamping plate 201 and the second clamping plate 202, and the extended part is fixed with a nut.

[0043] During testing, the filter 6 is secured and installed / removed by clamping and separating clamping plate 1 201 and clamping plate 2 202. Clamping plate 202 is set in place, while clamping plate 1 201 is connected to the lock. The lock is opened, and the push rod pulls clamping plate 1 201 on the bottom plate 1 toward the lock. When the lock is closed, the push rod pushes the first movable block away from the lock, locking it in place.

[0044] Furthermore, if Figure 2 and Figure 3 As shown, in order to adapt to filters 6 of different lengths, a long first slide groove 101 and a second slide groove 102 are provided at one end of the base plate 1 corresponding to the second clamping plate 202, and a protrusion is provided at the lower part of the second clamping plate 202. The protrusion can slide in the first slide groove 101 and the second slide groove 102 to drive the second clamping plate 202 to slide on the base plate 1.

[0045] Furthermore, a screw groove 103 is provided on the lower surface of the base plate 1 at a position corresponding to the first sliding groove 101 . The screw groove 103 is a through groove for inserting a screw to fix the second clamping plate 202 .

[0046] Furthermore, in order to prevent the filter 6 from being damaged by excessive impact during clamping, a buffer structure 4 is provided. In this embodiment, the buffer structure 4 is a buffer pad, which is sleeved on the outside of the nut.

[0047] The method of using this embodiment is as follows:

[0048] Insert the test cable into the connector 5 of the clamping plate 1 201; slide the clamping plate 202 and adjust the distance between the clamping plate 1 201 and the clamping plate 2 202 according to the size of the filter 6; insert the screw into the screw slot 103 to fix the clamping plate 202; open the locker and move the clamping plate 1 201 toward one end of the locker; insert the lead of the filter 6 into the connector 5 of the clamping plate 202 and place the filter 6 close to the clamping plate 202; Figure 4 As shown, the locker is closed, and the push rod of the locker 3 presses and fixes the clamping plate 201; the test of the filter 6 begins.

[0049] In this embodiment, clamping plate 1 201 and clamping plate 202 are used to clamp filter 6. Through first and second chute slots 101, 102, and screw slots 103, clamping plate 202 can be adjusted according to the size of filter 6 to accommodate different filters 6, improving the flexibility of the test fixture. Using a clamp for clamping is simple and convenient, facilitating improved testing efficiency.

[0050] Example 2

[0051] In order to make the clamping plate 2 more stable and ensure the accuracy of the filter 6 test, as shown in the following example: Figure 5 and Figure 6 As shown, this embodiment is improved on the basis of the first embodiment.

[0052] The clamping assembly 3 in this embodiment is a second clamping assembly 32. The second clamping assembly 32 includes a fixed plate 321, a slider 322 and a first spring 323. The slider 322 is fixed on the clamping plate 1 201, and the fixed plate 321 is installed at one end of the base plate 1. The first spring 323 is arranged between the fixed plate 321 and the slider 322. The slider 322 can slide under the elastic force of the first spring 323 and drive the clamping plate 1 201 to slide. The length of the natural extension of the first spring 323 is set to be greater than the maximum distance between the fixed plate 321 and the clamping plate 1 201. After the clamping plate 202 is fixed according to the size of the filter 6, the clamping plate 1 201 is pushed toward the side of the filter 6 under the elastic force of the first spring 323, against the filter 6 placed between the clamping plate 1 201 and the clamping plate 2 202 and clamped for testing.

[0053] When the filter 6 needs to be removed from the clamping plate 2 , the clamping plate 201 is moved toward the first spring 323 to compress the first spring 323 and remove the filter 6 .

[0054] A U-shaped through slot is provided at the bottom of the slider 322, and a through hole is provided on the fixing block to facilitate the passage of the test cable.

[0055] In this embodiment, the clamping force of the spring provides a stable clamping, which reduces shaking during the test and improves the stability of the filter 6 during the test; at the same time, the filter 6 is automatically clamped for disassembly through the compression and elastic force of the spring, thereby improving the test efficiency and enabling the filter 6 to be quickly and stably fixed.

[0056] In order to prevent the filter 6 from warping on both sides of its upper surface during the clamping process, which would affect the test results, a third clamping plate 203 is provided to press the top of the filter 6 tightly.

[0057] The upper portion of the second clamping plate 202 is provided with two third and fourth chutes 2021 and 2022. To ensure stable operation of the third clamping plate 203, the fourth chutes 2022 are configured as T-shaped slots. Accordingly, the third clamping plate 203 has three protrusions, the middle of which is T-shaped. These three protrusions can extend into the three chutes of the second clamping plate 202, allowing the third clamping plate 203 to slide up and down within the chutes of the second clamping plate 202.

[0058] When the filter 6 is pressed, the third clamping plate 203 slides to the top of the filter 6 , a bolt is placed in the third sliding groove 2021 , and a nut is screwed in to fix the third clamping plate 203 .

[0059] Furthermore, in order to make the top of the filter 6 more stably fixed and avoid the phenomenon that the third clamping plate 203 is pressed at one end near the second clamping plate 202 and tilted at one end away from the second clamping plate 202, a third clamping assembly 33 is provided.

[0060] The third clamping assembly 33 includes a top plate 331 and a telescopic structure 332. The top plate 331 is arranged on the upper part of the clamping plate 3 203. Figure 7 As shown, one end of the top plate 331 is fixed to the second clamping plate 202 .

[0061] The telescopic structure 332 is disposed between the top plate 331 and the third clamping plate 203. The telescopic structure 332 includes a telescopic rod 3321, a sleeve 3322, and a second spring 3323. The sleeve 3322 is fixed to the bottom of the top plate 331, and the telescopic rod 3321 is fixed to the top of the third clamping plate 203. Because the diameter of the telescopic rod 3321 is smaller than the inner diameter of the sleeve 3322, the telescopic rod 3321 can slide within the sleeve 3322. A second spring 3323 is disposed within the sleeve 3322. One end of the second spring 3323 is connected to the bottom of the sleeve 3322, and the other end is connected to the top of the telescopic rod 3321. The natural length of the second spring 3323 is set to be less than the distance between the top plate 331 and the minimum height filter 6. After the filter 6 is placed in the clamping plate 2, the elastic force of the second spring 3323 presses the third clamping plate 203 against the top of the filter 6 and presses the bottom of the filter 6 against the bottom plate 1.

[0062] Compared to the prior art, this embodiment provides a third clamping plate 203 on the top of the filter 6 to compress the top of the filter 6. To prevent one side near the second clamping plate 202 from being compressed while the other side tilts up, a top plate 331 is provided on the third clamping plate 203. The spring-loaded structure between the top plate 331 and the clamping plate 2 compresses the third clamping plate 203 against the top of the filter 6, thereby increasing the contact area between the third clamping plate 203 and the top of the filter 6. This indirectly improves the contact area between the bottom of the filter 6 and the bottom plate 1. By increasing the contact area between the top and bottom of the filter 6, the two sides and the four upper and lower surfaces of the filter 6 are compressed, making the filter 6 more stable.

[0063] In order to prevent the filter 6 from being damaged during the test, the buffer structure in this embodiment is configured as a buffer pad 4 plate. The shape of the buffer pad 4 plate is the same as that of the clamping plate 201, so as to protect the filter 6 with the largest area.

[0064] Example 3

[0065] Furthermore, in order to prevent the filter 6 from being damaged by the excessive clamping force of the spring when it is removed from the clamping plate 1 201 and the clamping plate 2 202, Figure 8 As shown, this embodiment is based on the second embodiment and is provided with a limiting structure 7. The limiting structure 7 includes a stopper 701, a third spring 702, and a baffle 703.

[0066] like Figure 9 As shown, grooves are provided on both sides of the upper portion of the slider 322, with stops 701 positioned at the openings of the grooves. It should be noted that the openings of the grooves are larger than the stops 701, allowing the stops 701 to move within the openings of the grooves. A third spring 702 is positioned within the grooves. One end of the third spring 702 is fixed to the bottom of the groove, and the other end is fixed to the stops 701. When the third spring 702 is at its natural length, the stops 701 can extend out of the grooves.

[0067] Baffles 703 are provided on both sides of the base plate 1 corresponding to the slider 322. The minimum distance between the two baffles 703 is greater than the width of the slider 322. Under the elastic force of the third spring 702, the slider 322 drives the clamping plate 1 201 to press the filter 6. At this time, the baffle 701 and clamping plate 1 201 are on the same side, that is, on the side of the baffle 703 closest to the filter 6. When the filter 6 needs to be removed, the baffle 701 is pressed, compressing the third spring 702 and causing the baffle 701 to enter the groove. The slider 322 and clamping plate 1 201 are moved toward the third spring 8, increasing the distance between clamping plate 1 201 and clamping plate 2 202. When the baffle 701 is on the side of the baffle 703 closest to the third spring 8, the baffle 701 is released. At this point, the baffle 701 is blocked by the baffle 703, and the slider 322 cannot move toward the filter 6. After the clamping plate 3 203 is removed, the filter 6 can be removed.

[0068] The method of using this embodiment is as follows:

[0069] Step 1: Fix the position of the second clamping plate 202 according to the size of the filter 6;

[0070] Step 2: Press the stopper 701 into the groove, move the first clamping plate 201 and the slider 322 toward the third spring 702, and release the stopper 701 when the baffle 104 is close to the third spring 702. At this time, the stopper 701 is blocked by the baffle 703 and cannot move. The distance between the first clamping plate 201 and the second clamping plate 202 increases;

[0071] Step 3: Lift the third clamping plate 203, place the filter 6 on the second clamping plate 202, connect the lead wires and test cables, and lower the third clamping plate 203 so that the third clamping plate 203 presses the top of the filter 6;

[0072] Step 4: Press the stopper 701 into the groove, move the clamping plate 201 and the slider 322 to the other side of the baffle 703, and make the clamping plate 201 contact the filter 6;

[0073] Step 5: Start testing.

[0074] Compared to existing technologies, the clamping structure in this embodiment utilizes a spring-slider structure. The spring's clamping force provides a stable grip, reducing vibration during testing and improving the stability of filter 6 during testing. To prevent damage to filter 6 caused by excessive spring clamping force during filter removal, a stopper structure 7 is provided. Stopper 701 is pressed into the groove to allow access to baffle 703. Release of stopper 701 blocks the clamping of slider 322 and clamping plate 1 201, allowing filter 6 to be removed and protected. This simple and convenient operation enhances the device's usability.

[0075] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A filter testing tool, characterized in that: It comprises a base plate (1), a clamping plate (2) and a clamping assembly (3); The clamping plate (2) and the clamping assembly (3) are arranged in sequence along the length direction of the base plate (1); The clamping plate (2) is used to clamp the filter (6), and the clamping plate (2) comprises a first clamping plate (201) and a second clamping plate (202); the clamping assembly (3) is connected to the first clamping plate (201); the clamping assembly (3) is used to clamp the clamping plate (2); The base plate (1) is provided with a first sliding groove (101) and a second sliding groove (102); a protrusion is provided at the lower portion of the second clamping plate (202), and the protrusion can slide in the first sliding groove (101) and the second sliding groove (102) to drive the second clamping plate (202) to slide on the base plate (1).

2. The filter testing tool according to claim 1, characterized in that: A screw groove (103) is provided at a position of the lower portion of the base plate (1) corresponding to the first slide groove (101) for inserting a screw to fix the second clamping plate (202). The clamping assembly (3) includes a first clamping assembly (31); the first clamping assembly (31) includes a locker.

3. The filter testing tool according to claim 1, characterized in that: The clamping assembly (3) further includes a second clamping assembly (32), the second clamping assembly (32) including a fixed plate (321), a slider (322) and a first spring (323); the fixed plate (321) is fixed to one end of the base plate (1); the slider (322) is fixed to the clamping plate (201); one end of the first spring (323) is fixed to the fixed plate (321), and the other end is fixed to the slider (322).

4. The filter testing tool according to claim 1, characterized in that: The clamping plate (2) further comprises a third clamping plate (203), which is used to press the top of the filter (6); the third clamping plate (203) can slide up and down along the second clamping plate (202).

5. The filter testing tool according to claim 4, characterized in that: The clamping assembly also includes a third clamping assembly (33), which includes a top plate (331) and a telescopic structure (332); the top plate (331) is arranged on the upper part of the third clamping plate (203), and one end of the top plate (331) is fixed to the second clamping plate (202).

6. The filter testing tool according to claim 5, characterized in that: The telescopic structure (332) is arranged between the top plate (331) and the third clamping plate (203), and the telescopic structure (332) includes a telescopic rod (3321), a sleeve (3322) and a second spring (3323).

7. The filter testing tool according to claim 6, characterized in that: The sleeve (3322) is arranged at the lower part of the top plate (331), and the telescopic rod (3321) is arranged at the upper part of the clamping plate three (203); the telescopic rod (3321) can slide in the sleeve (3322); the second spring (3323) is arranged between the sleeve (3322) and the telescopic rod (3321).

8. The filter testing tool according to claim 3, characterized in that: It also includes a limiting structure (7), which includes a stopper (701) and a baffle (703); grooves are provided on both sides of the upper portion of the slider (322), and a stopper (701) is provided at the mouth of the groove, and the stopper (701) can move in the groove.

9. The filter testing tool according to claim 8, characterized in that: The limiting structure (7) further comprises a third spring (702); one end of the third spring (702) is fixed to the bottom of the groove, and the other end is fixed to the stopper (701); when the third spring (702) is at its natural length, the stopper (701) can extend out of the groove.

10. The filter testing tool according to claim 8 or 9, characterized in that: The limiting structure (7) further comprises baffles (703), wherein the baffles (703) are arranged on both sides of the bottom plate (1), and the positions of the baffles (703) correspond to the sliding blocks (322).

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