Shielding device for surface resistance tester

Abstract

The utility model belongs to the technical field of shielding of surface resistance testers, and particularly relates to a shielding device of a surface resistance tester, which comprises a shielding box body. The shielding box body is provided with an auxiliary device; a placing groove is formed in the top of the push-pull hopper; a protective pad is mounted on the inner wall of the buffer layer; rotating frames are mounted at the two ends of the top of the push-pull hopper through pin shafts; an elastic bridle is connected between the frames of the rotating frame; the moving end part of the rotating frame is fixedly connected with a connecting piece; a connecting plate is mounted at the pulling end of the push-pull hopper; a winding cavity is formed in the connecting plate; fixed wire rollers are symmetrically and fixedly connected to the two side faces of the inner wall of the winding cavity. The ends, close to each other, of the screw rods are fixedly connected with rotating rods. The acting end of the rotating rod is fixedly connected with a limiting block; through the effect of the auxiliary device, the shielding equipment can be suitable for installation of resistance testers of different models and different sizes, and meanwhile, the situation that the accuracy of a detection result is affected due to the fact that redundant connecting wires are exposed outside is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shielding of surface resistance testers, and specifically relates to a shielding device for surface resistance testers. Background Art

[0002] When using a surface resistance tester for detection, a shielding device needs to be used as an auxiliary accessory to shield external electromagnetic interference to ensure the accuracy of test results.

[0003] A Chinese patent with the publication number CN215116434U discloses a shielding device for a surface resistance tester. It includes a resistance tester body, a shielding box is arranged outside the resistance tester body, side plates are arranged on both side walls of the shielding box, the side plates are of a hollow structure, a fixing frame adapted to the shielding box is arranged between the tops of the two side plates, a sealing door is hinged to the top of the fixing frame, a folding plate is arranged between the fixing frame and the shielding box, the bottom of the folding plate is fixedly connected to the top edge of the shielding box, the folding plate is in a "bellows" shape, an adjusting plate is arranged on the outer wall of the folding plate near the end, and the adjusting plate slides inside the side plate. The utility model is convenient to hold the resistance tester body and take it out from the fixing frame to avoid damage, and can shock-absorb and dry the resistance tester body.

[0004] When the above-mentioned shielding device for a surface resistance tester is in use, its application range is small, its stability is not high, it cannot adapt to resistance testers of different models and sizes, and when the resistance tester is operating, the required lengths of connecting wires are different in different operating environments, and the extra connecting wires are exposed outside, which will affect the accuracy of the detection results. Therefore, a shielding device for a surface resistance tester is proposed for the above problems. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the prior art and solve some existing problems of the shielding device during the operation of the surface resistance tester, the utility model proposes a shielding device for a surface resistance tester.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a shielding device for a surface resistance tester described in the utility model includes a shielding box body; a shielding cavity is opened inside the shielding box body; a transparent observation window is installed on the top of the shielding box body; an auxiliary device is installed on the shielding box body; the auxiliary device includes a push-pull bucket; the push-pull bucket is arranged inside the shielding cavity; a placement groove is opened on the top of the push-pull bucket; a buffer layer is installed on the inner wall of the placement groove; a protective pad is installed on the inner wall of the buffer layer; both ends of the top of the push-pull bucket are installed with rotating frames through pin shafts; an elastic band is connected between the frames of the rotating frames.

[0007] A connecting piece is fixedly connected to the moving end of the rotating frame; a pressing groove is formed at the top of the connecting piece; a rotating seat is installed on one side of the top of the push-pull bucket; a rotating block is installed on the top of the rotating seat; a telescopic cavity is formed on the bottom end surface of the rotating block; a spring is connected to the top inner wall of the telescopic cavity; the bottom of the spring is connected with a pressing ball; the stable placement of resistance testers of different models and sizes is realized.

[0008] Preferably, the spring does not deform when not working, and at this time, the horizontal plane where the bottom section of the pressing ball is located is lower than the horizontal plane where the bottom end surface of the rotating block is located; when the connecting piece is in a horizontal state, the horizontal plane where its top end surface is located is lower than the horizontal plane where the bottom end surface of the rotating block is located, and the horizontal plane where the bottom section of the pressing ball is located is lower than the horizontal plane where the top end surface of the connecting piece is located; when the rotating block rotates to the top of the connecting piece and the pressing ball is pressed into the pressing groove, the spring is in a compressed state; enabling the rotating frame to work stably.

[0009] Preferably, a connecting plate is installed at the pulling end of the push-pull bucket; elastic buckles are installed on both sides of the connecting plate through pin shafts; clamping grooves are symmetrically formed on both side surfaces of the shielding box body; the end of the elastic buckle can be clamped in the clamping groove; ensuring the working effect of the shielding cavity.

[0010] Preferably, a winding cavity is formed inside the connecting plate; fixed wire rollers are symmetrically fixedly connected to both side inner walls of the winding cavity; a screw rod is installed in the internal screw hole of the fixed wire roller; one end of the screw rod passes through the plate body of the connecting plate and extends to the outside, and a rotating knob is installed; facilitating the rotation of the screw rod.

[0011] Preferably, a rotating rod is fixedly connected to the mutually approaching ends of the screw rods; a limiting block is fixedly connected to the acting end of the rotating rod; when the distance between the rotating rods is the closest, the limiting block is located at the end of the fixed wire roller; realizing the winding of the redundant connecting wires on the fixed wire roller.

[0012] Preferably, communication holes are symmetrically formed on the inner wall surface of the winding cavity closest to the push-pull bucket; structural grooves are symmetrically formed at one end of the push-pull bucket close to the connecting plate; the structural grooves communicate with the communication holes; a lifting plate is installed on the outer structural surface of the connecting plate through a sliding block; through holes are symmetrically formed at the bottom of the lifting plate; facilitating the arrangement of the connecting wires.

[0013] The beneficial effects of the present utility model are as follows:

[0014] Through the structural design of the auxiliary device, the present utility model places it in the placement groove of the push-pull bucket, applies a force to the rotating frame, so that the elastic band tightly presses on both ends of the top of the tester, and applies a rotational force to the rotating block, so that the pressing ball tightly presses in the pressing groove, ensuring that the connecting piece and the rotating frame can operate stably, realizing the stable placement of resistance testers of different models and sizes. Then, the positive and negative connecting wires are respectively inserted into the winding cavity through the structural groove and the communication hole, and the connecting wires are respectively placed within the working range of the limiting block. Then, according to the operation requirements, rotational forces are respectively applied to the rotating knobs on both sides, the screw rotates, and the rotating rod drives the limiting block to rotate around the fixed wire roller as the central axis, winding the excess connecting wires around the outside of the fixed wire roller, and passing the connecting port through the through hole to connect with the external structure to be detected, achieving the adjustment of the length of the connecting wires and avoiding the influence of the exposed excess connecting wires on the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a three-dimensional structural schematic diagram;

[0017] Figure 2 is a structural schematic diagram of some components of the auxiliary device;

[0018] Figure 3 is a structural schematic diagram of the push-pull bucket;

[0019] Figure 4 is a structural schematic diagram of the auxiliary stability component;

[0020] Figure 5 is a structural schematic diagram of the connecting plate.

[0021] In the figure: 1, shielding box body; 2, shielding cavity; 3, transparent observation window; 401, push-pull bucket; 402, placement groove; 403, buffer layer; 404, protective pad; 405, rotating frame; 406, elastic band; 407, connecting piece; 408, pressing groove; 409, rotating seat; 410, rotating block; 411, telescopic cavity; 412, spring; 413, pressing ball; 414, connecting plate; 415, elastic buckle; 416, card slot; 501, winding cavity; 502, fixed wire roller; 503, screw; 504, rotating knob; 505, rotating rod; 506, limiting block; 507, communication hole; 508, structural groove; 509, lifting plate; 510, through hole. Detailed implementation mode

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 As shown, a shielding device for a surface resistance tester includes a shielding box body 1; a shielding cavity 2 is provided inside the shielding box body 1; a transparent observation window 3 is installed on the top of the shielding box body 1; an auxiliary device is installed on the shielding box body 1; the auxiliary device includes a push-pull bucket 401; the push-pull bucket 401 is arranged inside the shielding cavity 2; a placement groove 402 is opened at the top of the push-pull bucket 401; a buffer layer 403 is installed on the inner wall of the placement groove 402; a protective pad 404 is installed on the inner wall of the buffer layer 403; both ends of the top of the push-pull bucket 401 are installed with rotating frames 405 through pin shafts; an elastic band 406 is connected between the frames of the rotating frames 405;

[0024] A connecting piece 407 is fixedly connected to the moving end of the rotating frame 405; a pressing groove 408 is opened at the top of the connecting piece 407; a rotating seat 409 is installed on one side of the top of the push-pull bucket 401; a rotating block 410 is installed on the top of the rotating seat 409; a telescopic cavity 411 is opened on the bottom end surface of the rotating block 410; a spring 412 is connected to the top inner wall of the telescopic cavity 411; a pressing ball 413 is connected to the bottom of the spring 412; the spring 412 does not deform when not working, and at this time, the horizontal plane where the bottom cut surface of the pressing ball 413 is located is lower than the horizontal plane where the bottom end surface of the rotating block 410 is located; when the connecting piece 407 is in a horizontal state, the horizontal plane where its top end surface is located is lower than the horizontal plane where the bottom end surface of the rotating block 410 is located, and the horizontal plane where the bottom cut surface of the pressing ball 413 is located is lower than the horizontal plane where the top end surface of the connecting piece 407 is located; when the rotating block 410 rotates to the top of the connecting piece 407 and the pressing ball 413 is pressed into the pressing groove 408, the spring 412 is in a compressed state; a connecting plate 414 is installed at the pulling end of the push-pull bucket 401; elastic buckles 415 are installed on both sides of the connecting plate 414 through pin shafts; clamping grooves 416 are symmetrically opened on both side surfaces of the shielding box body 1; the end of the elastic buckle 415 can be clamped in the clamping groove 416;

[0025] During operation, when using a surface resistance tester for detection, a shielding device is required as an auxiliary accessory to shield external electromagnetic interference to ensure the accuracy of test results. When the existing shielding device for surface resistance testers is in use, its application range is small and its stability is not high. It cannot adapt to different models and sizes of resistance testers. Moreover, when the resistance tester is operating, the required lengths of connecting wires vary in different operating environments, and the excess connecting wires are exposed outside, which will affect the accuracy of the detection results. In this application, the auxiliary device is used to select a suitable resistance tester according to the requirements of the detection operation, place it in the placement groove 402 of the push-pull bucket 401, and apply a force to the rotating frame 405 so that the elastic band 406 tightly presses against both ends of the top of the tester. Then, a rotational force is applied to the rotating block 410. With the cooperation of the rotating seat 409, the pressing ball 413 enters the pressing groove 408 at the top of the connecting piece 407. At this time, the spring 412 is compressed and generates a reaction force, causing the pressing ball 413 to tightly press in the pressing groove 408, ensuring the stable operation of the connecting piece 407 and the rotating frame 405, and realizing the stable placement of resistance testers of different models and sizes. Subsequently, the connecting plate 414 and the resistance tester are pushed into the interior of the shielding cavity 2 by using the connecting plate 414, and the elastic buckle 415 is pressed into the clamping groove 416, enabling the shielding device to operate stably.

[0026] Please refer to Figure 1 , 5 As shown in the figure, a winding cavity 501 is formed inside the connecting plate 414; fixed wire rollers 502 are symmetrically and fixedly connected to both side surfaces of the inner wall of the winding cavity 501; a screw rod 503 is installed in the screw hole inside the fixed wire roller 502; one end of the screw rod 503 passes through the plate body of the connecting plate 414 and extends to the outside, and a rotating knob 504 is installed; the mutually adjacent ends of the screw rod 503 are fixedly connected with a rotating rod 505; a limiting block 506 is fixedly connected to the acting end of the rotating rod 505; when the distance between the rotating rods 505 is the closest, the limiting block 506 is located at the end of the fixed wire roller 502; communication holes 507 are symmetrically formed on the inner wall surface of the winding cavity 501 closest to the push-pull bucket 401; structural grooves 508 are symmetrically formed at one end of the push-pull bucket 401 close to the connecting plate 414; the structural grooves 508 communicate with the communication holes 507; a lifting plate 509 is installed on the outer structural surface of the connecting plate 414 through a sliding block; through holes 510 are symmetrically formed at the bottom of the lifting plate 509;

[0027] During operation, after the resistance tester is placed stably, the positive and negative connection wires are inserted into the winding cavity 501 through the structure slots 508 and the communication holes 507 respectively, and the connection wires are respectively placed within the working range of the limit blocks 506. Subsequently, rotational forces are applied to the rotary knobs 504 on both sides respectively. The screw 503 rotates, and the rotating rod 505 drives the limit blocks 506 to rotate around the fixed wire roller 502 as the central axis, winding the excess connection wires around the outside of the fixed wire roller 502, and passing the connection ports through the through holes 510 to connect with the external structure to be detected, achieving the adjustment of the length of the connection wires and avoiding the excess connection wires being exposed outside, which may affect the accuracy of the detection results.

[0028] Working principle: When using a surface resistance tester for detection, a shielding device is required as an auxiliary accessory to shield external electromagnetic interference to ensure the accuracy of the test results. When the existing shielding device of the surface resistance tester is in use, its application range is small and its stability is not high, and it cannot adapt to different models and sizes of resistance testers. Moreover, when the resistance tester is operating, the lengths of the connection wires required in different working environments are different, and the excess connection wires being exposed outside will affect the accuracy of the detection results. In this application, through the action of the auxiliary device, a suitable resistance tester is selected according to the requirements of the detection operation and placed in the placement slot 402 of the push-pull bucket 401. A force is applied to the rotating frame 405, so that the elastic band 406 tightly presses on both ends of the top of the tester. A rotational force is applied to the rotating block 410, and with the cooperation of the rotating seat 409, the pressing ball 413 enters the pressing groove 408 at the top of the connection piece 407. At this time, the spring 412 is compressed and generates a reaction force, so that the pressing ball 413 tightly presses in the pressing groove 408, ensuring the stable operation of the connection piece 407 and the rotating frame 405, achieving the stable placement of different models and sizes of resistance testers. The positive and negative connection wires are inserted into the winding cavity 501 through the structure slots 508 and the communication holes 507 respectively, and the connection wires are respectively placed within the working range of the limit blocks 506. Subsequently, the connecting plate 414 and the resistance tester are pushed into the interior of the shielding cavity 2 by using the connecting plate 414, and the elastic buckle 415 is pressed into the card slot 416, enabling the shielding device to operate stably. Then, according to the operation requirements, rotational forces are applied to the rotary knobs 504 on both sides respectively. The screw 503 rotates, and the rotating rod 505 drives the limit blocks 506 to rotate around the fixed wire roller 502 as the central axis, winding the excess connection wires around the outside of the fixed wire roller 502, and passing the connection ports through the through holes 510 to connect with the external structure to be detected, achieving the adjustment of the length of the connection wires and avoiding the excess connection wires being exposed outside, which may affect the accuracy of the detection results.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A shielding device for a surface resistance tester, comprising a shielding box (1); a shielding cavity (2) is provided inside the shielding box (1); a transparent observation window (3) is installed on the top of the shielding box (1); an auxiliary device is installed on the shielding box (1); the characteristics are: The auxiliary device comprises a push-pull bucket (401); the push-pull bucket (401) is arranged inside the shielding cavity (2); a placement groove (402) is opened on the top of the push-pull bucket (401); a buffer layer (403) is installed on the inner wall of the placement groove (402); a protective pad (404) is installed on the inner wall of the buffer layer (403); rotating frames (405) are installed at both ends of the top of the push-pull bucket (401) through pins; elastic bands (406) are connected between the frames of the rotating frames (405); The moving end of the rotating frame (405) is fixedly connected with a connecting piece (407); a pressing groove (408) is provided on the top of the connecting piece (407); a rotating seat (409) is installed on one side of the top of the push-pull bucket (401); a rotating block (410) is installed on the top of the rotating seat (409); a telescopic cavity (411) is provided on the bottom end surface of the rotating block (410); a spring (412) is connected to the top of the inner wall of the telescopic cavity (411); and a pressure ball (413) is connected to the bottom of the spring (412).

2. A surface resistance tester shielding device according to claim 1, characterized in that: The spring (412) does not deform when not in operation, and at this time, the horizontal plane where the bottom section of the pressure ball (413) is located is lower than the horizontal plane where the bottom end surface of the rotating block (410) is located; when the connecting piece (407) is in a horizontal state, the horizontal plane where its top end surface is located is lower than the horizontal plane where the bottom end surface of the rotating block (410) is located, and the horizontal plane where the bottom section of the pressure ball (413) is located is lower than the horizontal plane where the top end surface of the connecting piece (407) is located; when the rotating block (410) rotates to the top of the connecting piece (407) and the pressure ball (413) is pressed into the pressing groove (408), the spring (412) is in a compressed state.

3. A surface resistance tester shielding device according to claim 2, characterized in that: A connecting plate (414) is installed at the pulling end of the push-pull bucket (401); elastic buckles (415) are installed on both sides of the connecting plate (414) through pins; and clamping grooves (416) are symmetrically provided on both side surfaces of the shielding box (1); and the ends of the elastic buckles (415) can be clamped in the clamping grooves (416).

4. A surface resistance tester shielding device according to claim 3, characterized in that: A winding chamber (501) is provided inside the connecting plate (414); fixed wire rollers (502) are symmetrically fixedly connected to both sides of the inner wall of the winding chamber (501); a screw rod (503) is installed in the internal screw hole of the fixed wire roller (502); one end of the screw rod (503) passes through the body of the connecting plate (414) and extends to the outside, and a rotating knob (504) is installed thereon.

5. A shielding device for a surface resistance tester according to claim 4, characterized in that: The ends of the screw rods (503) that are close to each other are fixedly connected with a rotating rod (505); the active end of the rotating rod (505) is fixedly connected with a limiting block (506); when the distance between the rotating rods (505) is the shortest, the limiting block (506) is located at the end of the fixed line roller (502).

6. A surface resistance tester shielding device according to claim 5, characterized in that: The inner wall surface of the winding chamber (501) closest to the push-pull bucket (401) is symmetrically provided with connecting holes (507); one end of the push-pull bucket (401) close to the connecting plate (414) is symmetrically provided with a structural groove (508); the structural groove (508) is connected to the connecting hole (507); a lifting plate (509) is installed on the outer structural surface of the connecting plate (414) via a sliding block; and through holes (510) are symmetrically provided at the bottom of the lifting plate (509).

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