Fixing device for electromagnetic compatibility detection
By designing the fixing device of the limit structure and guide groove, the problem of loose fixation of the equipment in the prior art is solved, the accurate fixation of the equipment and the accuracy of the detection results are achieved, and the wear of the equipment is reduced.
Patent Information
- Application Number
- CN202420579418.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-25
AI Technical Summary
The existing fixing devices lack a structure to prevent the threaded column from being reversed when the equipment is fixed, which leads to loosening of the equipment fixation and affects the accuracy of the detection results.
A fixing device including a base and a placing table is designed, using a limit structure and a guide groove. Through components such as rotating rods, gears, push blocks and support plates, the equipment is accurately fixed and prevented from loosening.
Effectively prevent the equipment from being fixed loose, improve the accuracy of the test results, and reduce equipment wear through soft glue strips.
Smart Images
Figure CN222167090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnetic compatibility detection and fixing, in particular to a fixing device used for electromagnetic compatibility detection. Background Art
[0002] Electromagnetic compatibility refers to the ability of a device or system to operate in accordance with requirements in its electromagnetic environment and not produce intolerable electromagnetic interference to any device in its environment. Therefore, EMC includes two requirements: on the one hand, the electromagnetic interference generated by the device to the environment in normal operation cannot exceed a certain limit; on the other hand, it means that the device has a certain degree of immunity to the electromagnetic interference in the environment, that is, electromagnetic sensitivity. In order to ensure the accuracy of the test results, the device will be fixed with a fixture before the test.
[0003] In the prior art, for example, Chinese patent CN214953666U discloses "a fixing device for electromagnetic compatibility testing", which includes a support frame, the support frame includes two side surfaces and a top surface connected to the top of the two side surfaces, side fixing brackets are arranged on the two side surfaces, and a top surface fixing bracket is arranged on the top surface; the side fixing brackets are movably installed in the side movable grooves and can be positioned in the side movable grooves; the top surface fixing brackets are movably installed in the top surface movable grooves and can be positioned in the top surface movable grooves; the side movable grooves on the two side surfaces are symmetrically arranged.
[0004] Existing fixing devices mostly use threaded rotation to fix the equipment. Since there is no structure on the outside to prevent the threaded column from reversing, the threaded column is prone to reverse during use, causing the device to become loose, thereby causing errors in the device's detection results, thereby affecting the device's detection results. Utility Model Content
[0005] The purpose of the utility model is to solve the problem that the existing fixing devices in the prior art mostly use the method of thread rotation to fix the equipment. Since there is no structure on the outside to prevent the thread column from reversing, the thread column is prone to reverse during use, causing the fixation of the equipment to loosen, thereby causing errors in the detection results of the equipment, thereby affecting the detection results of the equipment. A fixing device for electromagnetic compatibility detection is proposed to solve the problem that the existing fixing devices in the prior art mostly use the method of thread rotation to fix the equipment. Since the structure is not provided on the outside to prevent the thread column from reversing, the thread column is prone to reverse during use, causing the fixation of the equipment to loosen, thereby causing errors in the detection results of the equipment, thereby affecting the detection results of the equipment.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fixing device for electromagnetic compatibility detection, comprising a base and a placing table, a fixing mechanism is arranged at the upper end of the base and near the edge positions on both sides, a limiting structure is arranged at one end of two groups of the fixing mechanisms, the fixing mechanism comprises two groups of long seats and a fixing plate, movable heads are movably installed inside the two groups of long seats, support plates are fixedly installed at one end of the two groups of movable heads, push blocks are arranged at one end of the two groups of long seats, a rotating rod is arranged in the middle of the two groups of push blocks, a matching recess is slidably arranged at the other end of the two groups of push blocks, a tooth plate is fixedly installed inside the push blocks, gears are fixedly installed on the outer side wall of the rotating rod and near the edge positions on both sides, one end of the two groups of matching recesses are movably arranged with the rotating rod, the other ends of the two groups of matching recesses are respectively movably arranged with the other ends of the two groups of support plates, and the two groups of gears are respectively meshed with the two groups of tooth plates;
[0007] The limiting structure includes two groups of push plates, and limiting holes are penetrated at one end of the two groups of push plates and near the front and rear edges. Limiting columns are fixedly installed at one end of the two groups of push blocks and near the two side edges, and there are several groups of limiting columns.
[0008] Preferably, the front and rear ends of the placement table are provided with guide grooves, and one end of the four groups of push blocks are fixedly mounted with guide blocks.
[0009] Preferably, a limiting plate is fixedly installed in the middle of the two groups of pushing blocks, and soft rubber strips are fixedly installed at one end of the two groups of fixing plates, and there are several groups of soft rubber strips, and the lower end of the placement table is fixed to the upper end of the base.
[0010] Preferably, blocking circular plates are fixedly mounted on both ends of the rotating rod, the two groups of push plates are slidably sleeved on the two ends of the rotating rod respectively, and the diameters of the two groups of limiting holes and the plurality of groups of limiting columns are the same.
[0011] Preferably, one end of the four groups of guide blocks are slidably disposed with the two groups of guide grooves respectively.
[0012] Preferably, the lower ends of the two groups of limit plates are in contact with the upper end of the placement table, and the lower ends of the four groups of long seats are fixed to the upper end of the base.
[0013] Compared with the prior art, the advantages and positive effects of the utility model are:
[0014] 1. In the utility model, under the cooperation of two sets of fixing mechanisms and two sets of limiting structures, the fixing mechanisms are operated one by one first, and by rotating the rotating rod, the rotating rod drives the two sets of gears fixed thereto to rotate inside the two sets of push blocks respectively, and the two sets of gears will move downward at one end of the two sets of tooth plates respectively, and the rotating rod will also drive the two sets of matching recesses movably installed therewith to move together when moving downward, and the two sets of matching recesses will respectively drive the support plates rotatably installed therewith to move downward, and the other ends of the two sets of support plates will respectively drive the movable heads fixed therewith to move, and when the two sets of support plates move downward, The two sets of long seats push the fixed plate to move on the placement table, and then push the two sets of push plates respectively, so that the two sets of limit holes on the push plates are accurately moved to the two sets of limit columns parallel to them, to prevent the rotating rod from driving the two sets of gears to move on the two sets of side plates respectively, and then repeat the above steps to operate another set of fixing mechanisms and another set of limit structures, so that the two sets of fixing plates contact the two ends of the equipment and limit the other set of rotating rods, so that the equipment can be fixed to prevent the equipment from being loosened, and will not cause errors in the detection results of the equipment and will not affect the detection results of the equipment.
[0015] 2. In the utility model, two groups of guide grooves and four groups of guide blocks are provided. When the four groups of push blocks move, the movement of the four groups of push blocks drives the guide blocks to move, so that the four groups of guide blocks slide inside the two groups of guide grooves respectively, thereby increasing the stability of the four groups of push blocks when moving. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 A three-dimensional structural schematic diagram of a fixing device for electromagnetic compatibility testing is proposed for the utility model;
[0017] Figure 2 The utility model provides a structural schematic diagram of a fixing mechanism and a placement table of a fixing device for electromagnetic compatibility testing;
[0018] Figure 3 A side view of a fixing mechanism of a fixing device for electromagnetic compatibility testing proposed by the utility model;
[0019] Figure 4 The utility model proposes a fixing device for electromagnetic compatibility detection Figure 2 Schematic diagram of the enlarged structure of A.
[0020] Legend: 1. Base; 2. Fixing mechanism; 21. Long seat; 22. Movable head; 23. Support plate; 24. Fixing plate; 241. Soft rubber strip; 25. Push block; 251. Guide groove; 252. Guide block; 26. Turn rod; 27. Matching recess; 28. Tooth plate; 29. Gear; 210. Limit plate; 3. Limit structure; 31. Push plate; 32. Blocking circular plate; 33. Limit hole; 34. Limit column; 4. Placement table. DETAILED DESCRIPTION
[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.
[0023] Embodiment 1
[0024] like Figure 1 As shown in Figure 4, the utility model provides a fixing device for electromagnetic compatibility testing, including a base 1 and a placing table 4, a fixing mechanism 2 is arranged at the upper end of the base 1 and near the edge positions on both sides, a limiting structure 3 is arranged at one end of two groups of fixing mechanisms 2, the fixing mechanism 2 includes two groups of long seats 21 and a fixing plate 24, movable heads 22 are movably installed inside the two groups of long seats 21, and support plates 23 are fixedly installed at one end of the two groups of movable heads 22, a push block 25 is arranged at one end of the two groups of long seats 21, a rotating rod 26 is arranged in the middle of the two groups of push blocks 25, and a matching recess 27 is slidably arranged at the other end of the two groups of push blocks 25, a tooth plate 28 is fixedly installed inside the push block 25, a gear 29 is fixedly installed on the outer wall of the rotating rod 26 and near the edge positions on both sides, one end of the two groups of matching recesses 27 are movably arranged with the rotating rod 26, and the other ends of the two groups of matching recesses 27 are respectively connected to the other ends of the two groups of support plates 23 One end is movably arranged, two sets of gears 29 are respectively meshed with two sets of tooth plates 28, a limit plate 210 is fixedly installed in the middle of the two sets of push blocks 25, one end of the two sets of fixed plates 24 is fixedly installed with a soft rubber strip 241, and there are several sets of soft rubber strips 241, the lower end of the placement table 4 is fixed to the upper end of the base 1, and both ends of the rotating rod 26 are fixedly installed with a blocking circular plate 32, and the two sets of push plates 31 are respectively slidably sleeved on the two ends of the rotating rod 26, and the two sets of limit holes 3 3 is the same as the diameter of several groups of limiting columns 34, the lower ends of the two groups of limiting plates 210 are in contact with the upper end of the placing table 4, the lower ends of the four groups of long seats 21 are fixed to the upper end of the base 1, the limiting structure 3 includes two groups of push plates 31, one end of the two groups of push plates 31 and near the front and rear edges are penetrated by limiting holes 33, one end of the two groups of push blocks 25 and near the edges of both sides are fixedly installed with limiting columns 34, and there are several groups of limiting columns 34.
[0025] The following is a detailed description of the specific settings and functions of this embodiment. Under the cooperation of the two sets of fixing mechanisms 2 and the two sets of limiting structures 3, the two sets of fixing mechanisms 2 are operated one by one, and by rotating the rotating rod 26, the rotating rod 26 drives the two sets of gears 29 fixed thereto to rotate respectively inside the two sets of pushing blocks 25. Under the meshing of the two sets of gears 29 and the two sets of toothed plates 28, the two sets of gears 29 will move downward at one end of the two sets of toothed plates 28 respectively. While moving downward, the rotating rod 26 will also drive the two sets of matching recesses 27 movably installed therewith to move together, so that the two sets of matching recesses 27 are respectively moved downward inside the two sets of pushing blocks 25, and the two sets of matching recesses 27 will respectively drive the support plates 23 rotatably installed therewith to move downward, and the other ends of the two sets of support plates 23 will respectively drive the movable heads 22 fixed thereto to move, so that the two sets of movable heads 22 are respectively rotated inside the two sets of long seats 21, and when the two sets of support plates 23 move downward, they push the fixed plate 2 through the two sets of long seats 21. The two sets of long seats 21 are moved on the placement table 4, and the two sets of long seats 21 are stably moved on the front and rear ends of the placement table 4 through the limiting plates 210, and then the two sets of push plates 31 are pushed respectively, so that the two sets of limiting holes 33 on the push plates 31 are accurately moved to the two sets of limiting pillars 34 parallel thereto, and the two sets of limiting pillars 34 are respectively fastened and inserted into the two sets of limiting holes 33 to prevent the rotating rod 26 from driving the two sets of gears 29 to move on the two sets of side plates respectively, and then the above steps are repeated to operate another set of fixing mechanisms 2 and another set of limiting structures 3, so that the two sets of fixing plates 24 are in contact with the two ends of the equipment and limit the other set of rotating rods 26, so that the equipment can be fixed and the loosening of the fixing of the equipment is prevented, so as not to cause errors in the detection results of the equipment and not to affect the detection results of the equipment, wherein, with the cooperation of the several sets of soft rubber strips 241, after the equipment is clamped, with the cooperation of the several sets of soft rubber strips 241, a protective effect can be played to prevent the side wall of the equipment from being worn.
[0026] Embodiment 2
[0027] like Figure 2 and Figure 4 As shown, the front and rear ends of the placement table 4 are both provided with guide grooves 251 , one end of each of the four push blocks 25 is fixedly mounted with a guide block 252 , and one end of the four guide blocks 252 is respectively slidably arranged with two guide grooves 251 .
[0028] The effect achieved by the entire embodiment is that by setting two groups of guide grooves 251 and four groups of guide blocks 252, when the four groups of push blocks 25 move, the movement of the four groups of push blocks 25 drives the guide blocks 252 to move, so that the four groups of guide blocks 252 slide inside the two groups of guide grooves 251 respectively, thereby increasing the stability of the four groups of push blocks 25 when moving.
[0029] The method of use and working principle of the present device are as follows: first, the device is placed on the placement table 4, and then the fixing mechanism 2 is operated one by one in two groups. By rotating the rotating rod 26, the rotating rod 26 drives the two groups of gears 29 fixed thereto to rotate inside the two groups of push blocks 25 respectively. Through the meshing of the two groups of gears 29 and the two groups of tooth plates 28, the two groups of gears 29 will move downward at one end of the two groups of tooth plates 28 respectively. While moving downward, the rotating rod 26 will also drive the two groups of matching recesses 27 movably installed therewith to move together, so that the two groups of matching recesses 27 will move downward inside the two groups of push blocks 25 respectively, and the two groups of matching recesses 27 will respectively drive the support plates 23 rotatably installed therewith to move downward, and the other ends of the two groups of support plates 23 will respectively drive the movable heads 22 fixed thereto to move, so that the two groups of movable heads 22 will respectively rotate inside the two groups of long seats 21, and when the two groups of support plates 23 move downward, they will push the fixed plate 24 to move on the placement table 4 through the two groups of long seats 21. The two groups of long seats 21 are stably moved on the front and rear ends of the placing table 4 through the limiting plates 210, and then the two groups of push plates 31 are pushed respectively, so that the two groups of limiting holes 33 on the push plates 31 are accurately moved to the two groups of limiting pillars 34 parallel thereto, and the two groups of limiting pillars 34 are respectively fastened and inserted into the two groups of limiting holes 33 to prevent the rotating rod 26 from driving the two groups of gears 29 to move on the two groups of side plates respectively, and then repeat the above steps to operate another group of fixing mechanisms 2 and another group of limiting structures 3, so that the two groups of fixing plates 24 contact the two ends of the equipment, so that the two groups of fixing plates 24 drive the several groups of soft rubber strips 241 at one end to move, so that the several groups of soft rubber strips 241 are respectively in close contact with the two ends of the equipment, and limit the other group of rotating rods 26, so that the equipment can be fixed, wherein, when the four groups of push blocks 25 move, the movement of the four groups of push blocks 25 drives the guide blocks 252 to move, so that the four groups of guide blocks 252 slide inside the two groups of guide grooves 251 respectively.
[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A fixing device for electromagnetic compatibility testing, comprising a base (1) and a placement table (4), characterized in that: A fixing mechanism (2) is provided at the upper end of the base (1) and near the edges of both sides; one end of the two groups of the fixing mechanisms (2) is provided with a limiting structure (3); the fixing mechanism (2) comprises two groups of long seats (21) and a fixing plate (24); a movable head (22) is movably installed inside the two groups of the long seats (21); one end of the two groups of the movable heads (22) is fixedly installed with a support plate (23); one end of the two groups of the long seats (21) is provided with a push block (25); a rotating rod (23) is provided in the middle of the two groups of the push blocks (25). 6), the other ends of the two groups of push blocks (25) are slidably provided with a matching recess (27), a tooth plate (28) is fixedly installed inside the push block (25), and gears (29) are fixedly installed on the outer wall of the rotating rod (26) and near the edges on both sides, one end of the two groups of matching recesses (27) are movably arranged with the rotating rod (26), and the other ends of the two groups of matching recesses (27) are movably arranged with the other ends of the two groups of support plates (23), and the two groups of gears (29) are respectively meshed with the two groups of tooth plates (28); The limiting structure (3) comprises two groups of push plates (31), one end of the two groups of push plates (31) and near the front and rear edges are provided with limiting holes (33), one end of the two groups of push blocks (25) and near the edges on both sides are fixedly installed with limiting columns (34), and there are a plurality of groups of limiting columns (34).
2. A fixing device for electromagnetic compatibility testing according to claim 1, characterized in that: The front and rear ends of the placement platform (4) are both provided with guide grooves (251), and one end of each of the four groups of push blocks (25) is fixedly mounted with a guide block (252).
3. The fixing device for electromagnetic compatibility testing according to claim 1, characterized in that: A limiting plate (210) is fixedly installed in the middle of the two groups of pushing blocks (25), and a soft rubber strip (241) is fixedly installed at one end of the two groups of fixing plates (24), and there are several groups of the soft rubber strips (241). The lower end of the placement platform (4) is fixed to the upper end of the base (1).
4. The fixing device for electromagnetic compatibility testing according to claim 1, characterized in that: Blocking circular plates (32) are fixedly mounted on both ends of the rotating rod (26), and two groups of push plates (31) are respectively slidably sleeved on the two ends of the rotating rod (26), and the diameters of the two groups of limiting holes (33) and the plurality of groups of limiting columns (34) are the same.
5. The fixing device for electromagnetic compatibility testing according to claim 2, characterized in that: One end of the four groups of guide blocks (252) is slidably disposed with the two groups of guide grooves (251) respectively.
6. The fixing device for electromagnetic compatibility testing according to claim 3, characterized in that: The lower ends of the two groups of limit plates (210) are in contact with the upper end of the placement table (4), and the lower ends of the four groups of long seats (21) are fixed to the upper end of the base (1).