Fixing device

Abstract

The invention provides a fixing device. The fixing device comprises a bottom plate; the first fixing plate and the second fixing plate are arranged on the bottom plate in a spaced mode, the first fixing plate is used for fixing a to-be-detected plate, and the second fixing plate is used for fixing the main control board; the first clamping piece and the second clamping piece are arranged on the bottom plate in a position adjustable mode, the first clamping piece is provided with a first clamping position covering the first fixing plate and a first avoiding position avoiding the first fixing plate, and the second clamping piece is provided with a second clamping position covering the second fixing plate and a second avoiding position avoiding the second fixing plate; wherein the first fixing plate, the second fixing plate, the first clamping piece and the second clamping piece are all made of metal materials, a detection through hole is formed in the first clamping piece, and a radio frequency signal is sent out from a to-be-detected part of the to-be-detected plate through the detection through hole. Through the technical scheme provided by the invention, the problem that radio frequency radiation generated when the radio frequency signal is tested in the prior art can cause harm to a human body can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency signal testing, and in particular to a fixing device. Background Art

[0002] Radio frequency is the abbreviation of high-frequency alternating electromagnetic waves. When the frequency of the alternating current is less than 10M, it is called low-frequency current, and when it is greater than 10M, it is called high-frequency current, which is radio frequency. At present, radio frequency is used in communication technologies such as WIFI, Bluetooth, GPS, and NFC. Radio frequency technology is widely used in the field of wireless communications, especially in base station communications.

[0003] Base station communications have evolved from analog communications to digital communications, and the radio frequency bands used include different frequency ranges. Testing of such radio frequency signals also requires special testing methods and technologies.

[0004] However, in the prior art, when testing radio frequency signals, the radio frequency electromagnetic radiation generated by the radio frequency signals is often not shielded, and radio frequency radiation can produce biological effects on the human body, including non-thermal effects and thermal effects, thereby causing harm to the human body. Summary of the invention

[0005] The main purpose of the present invention is to provide a fixing device to solve the problem in the prior art that radio frequency radiation generated when testing radio frequency signals may cause harm to the human body.

[0006] In order to achieve the above object, the present invention provides a fixing device, comprising:

[0007] Base plate;

[0008] A first fixing plate and a second fixing plate are arranged on the bottom plate at intervals, the first fixing plate is used to fix the board to be tested, and the second fixing plate is used to fix the main control board;

[0009] A first clamping piece and a second clamping piece are adjustably arranged on the bottom plate, the first clamping piece has a first clamping position covering the first fixing plate and a first avoidance position avoiding the first fixing plate, and the second clamping piece has a second clamping position covering the second fixing plate and a second avoidance position avoiding the second fixing plate;

[0010] The first fixing plate, the second fixing plate, the first clamp and the second clamp are all made of metal materials. The first clamp is provided with a detection through hole to detect the radio frequency signal emitted from the part to be detected of the plate to be detected through the detection through hole.

[0011] Furthermore, a first wiring through hole is provided on the first clamping piece, so that the data line passes through the first wiring through hole and is connected to the wiring part of the board to be tested; and / or,

[0012] The second clip is provided with a second wiring through hole, so that the data line passes through the second wiring through hole and is connected to the wiring part of the main control board.

[0013] Furthermore, the fixing device further comprises:

[0014] A first support portion is arranged on the bottom plate, one end of the first clip is hinged to the first support portion, the height of the first support portion is greater than the first fixing plate, and the first support portion is provided with a first limiting member to limit the first clip when the first clip is in the first clamping position and to space the first clip from the first fixing plate by a first preset distance; and / or,

[0015] The second support portion is arranged on the bottom plate, one end of the second clip is hinged to the second support portion, the height of the second support portion is greater than the second fixed plate, and the second support portion is provided with a second limiting member to limit the second clip when the second clip is in the second clamping position and to space the second clip and the second fixed plate by a second preset distance.

[0016] Further, the first fixing plate is provided with a first connecting portion, and the first clip is provided with a first connecting matching portion, and when the first clip is in the first clamping position, the first connecting portion and the first connecting matching portion are connected and matched to fix the first clip; and / or,

[0017] The second fixing plate is provided with a second connecting portion, and the second clamp is provided with a second connecting matching portion. When the second clamp is in the second clamping position, the second connecting portion is connected and matched with the second connecting matching portion to fix the second clamp.

[0018] Further, one of the first fixing plate and the first clamp is provided with a first connecting block, and the other of the first fixing plate and the first clamp has a first connecting matching hole; the fixing device further comprises a first connecting member, so that the first connecting member passes through the first connecting hole and is connected and matched with the first connecting matching hole; and / or,

[0019] One of the second fixing plate and the second clamp is provided with a second connecting block, and the other of the second fixing plate and the second clamp has a second connecting fitting hole; the fixing device also includes a second connecting member, so that the second connecting member passes through the second connecting hole and is connected and fitted with the second connecting fitting hole.

[0020] Further, a first avoidance groove is provided on one side of the first clip close to the first fixing plate, so as to accommodate the electronic components on the board to be detected through the first avoidance groove; and / or,

[0021] A second avoidance groove is arranged on one side of the second clip close to the second fixing plate, so as to accommodate the electronic components on the main control board through the second avoidance groove.

[0022] Further, a plurality of first positioning protrusions are provided on the first fixing plate, so that the plurality of positioning holes of the plate to be tested are sleeved on the first positioning protrusions in a one-to-one correspondence; and / or;

[0023] The second fixing plate is provided with a plurality of second positioning protrusions, so that the plurality of positioning holes of the main control board are sleeved on the first positioning protrusions in a one-to-one correspondence.

[0024] Further, the first fixing plate has a plurality of detection parts arranged at intervals, each detection part is used to fix a plate to be detected; and / or,

[0025] An avoidance gap is arranged at the edge of the second fixing plate, so that the data line passes through the avoidance gap and is connected to the main control board.

[0026] Furthermore, the fixing device also includes a power supply box, the power supply box has a receiving cavity and an opening, the receiving cavity is used to receive the power board, and the bottom plate covers the opening;

[0027] A power supply hole is provided on the side panel of the power supply box, and a power supply avoidance opening is provided on the second clip, so that the power supply line passes through the power supply hole and the power supply avoidance opening and is connected to the main control board.

[0028] Further, two opposite side panels of the power supply box are provided with carrying holes so that the operator's hands or operating components can be inserted into the carrying holes; and / or,

[0029] A power hole is provided on the side plate of the power supply box so that the power line passes through the power hole and is connected to the power board; and / or,

[0030] The first fixing plate is integrally formed with the bottom plate, and the first fixing plate has a first heat dissipation hole communicating with the accommodating cavity; and / or,

[0031] The second fixing plate is integrally formed with the bottom plate, and the second fixing plate has a second heat dissipation hole communicated with the accommodating cavity.

[0032] By applying the technical solution of the present invention, when testing a board to be tested, the board to be tested is clamped between the first clamp and the first fixed plate, and the main control board is clamped between the second clamp and the second fixed plate, and the first fixed plate, the second fixed plate, the first clamp and the second clamp are all made of metal materials, so the electromagnetic radiation of the board to be tested and the main control board can be shielded, thereby solving the problem in the prior art that the radio frequency radiation generated when testing the radio frequency signal may cause harm to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0034] Figure 1 A schematic diagram showing a first clip in a fixing device provided in an embodiment of the present invention is shown in a first avoiding position at a viewing angle;

[0035] Figure 2 A schematic diagram showing a first clamping piece in a fixing device provided in an embodiment of the present invention when the first clamping piece is in a first clamping position; and

[0036] Figure 3 A schematic diagram showing a first clamp in a fixing device provided according to an embodiment of the present invention when the first clamp is in a first clamping position at another viewing angle is shown.

[0037] The above drawings include the following reference numerals:

[0038] 10. Bottom plate;

[0039] 21. first fixing plate; 211. first connecting portion; 212. detecting portion; 213. first heat dissipation hole;

[0040] 22, second fixing plate; 221, second connecting portion; 222, avoidance notch; 223, second heat dissipation hole;

[0041] 31, first clip; 311, detection through hole; 312, first wiring through hole; 313, first connection matching portion; 314, first avoidance groove;

[0042] 32, second clip; 321, second wiring through hole; 322, second connection matching portion; 323, second avoidance groove; 324, power supply avoidance port;

[0043] 41. first supporting portion; 411. first limiting member;

[0044] 42. Second supporting portion; 421. Second limiting member;

[0045] 50. Power supply box; 51. Power supply hole; 52. Transport hole; 53. Power supply hole. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] like Figures 1 to 3As shown, an embodiment of the present invention provides a fixing device, which includes a base plate 10, a first fixing plate 21, a second fixing plate 22, a first clamp 31 and a second clamp 32. The first fixing plate 21 and the second fixing plate 22 are arranged on the base plate 10 at intervals, the first fixing plate 21 is used to fix the board to be detected, and the second fixing plate 22 is used to fix the main control board. The first clamp 31 and the second clamp 32 are adjustably arranged on the base plate 10, the first clamp 31 has a first clamping position covering the first fixing plate 21 and a first avoidance position avoiding the first fixing plate 21, and the second clamp 32 has a second clamping position covering the second fixing plate 22 and a second avoidance position avoiding the second fixing plate 22. Among them, the first fixing plate 21, the second fixing plate 22, the first clamp 31 and the second clamp 32 are all made of metal materials, and the first clamp 31 is provided with a detection through hole 311 to detect the radio frequency signal emitted from the to-be-detected portion of the board to be detected through the detection through hole 311.

[0048] By using the fixing device provided in this embodiment, when the board to be detected is detected, the board to be detected is clamped between the first clamp 31 and the first fixing plate 21, and the main control board is clamped between the second clamp 32 and the second fixing plate 22, and the first fixing plate 21, the second fixing plate 22, the first clamp 31 and the second clamp 32 are all made of metal materials, so the electromagnetic radiation of the board to be detected and the main control board can be shielded. In addition, a detection through hole 311 is provided on the first clamp 31, and the radio frequency signal emitted from the part to be detected of the board to be detected can be detected through the detection through hole 311, thereby avoiding the first clamp 31 from shielding the part to be detected, thereby ensuring the shielding effect of the fixing device while ensuring that the part to be detected can be conveniently detected. In addition, the board to be detected and the main control board are set separately, so that the main control board can be effectively separated from the board to be detected, and the radio frequency signals at different positions can be tested separately without interfering with each other, thereby improving the accuracy and precision of the test.

[0049] Specifically, the board to be tested is a radio frequency power amplifier board.

[0050] In this embodiment, a first wiring through hole 312 is provided on the first clamp 31, and a second wiring through hole 321 is provided on the second clamp 32, so that the data line passes through the first wiring through hole 312 to connect with the wiring part of the board to be detected, and passes through the second wiring through hole 321 to connect with the wiring part of the main control board. In this way, the board to be detected and the main control board can be conveniently connected through the first wiring through hole 312 and the second wiring through hole 321, so as to facilitate data transmission between the board to be detected and the main control board, thereby improving the convenience of using the fixing device.

[0051] Specifically, when the first clamp 31 is in the first clamping position, the first wiring through hole 312 is opposite to the wiring part of the board to be tested, and when the second clamp 32 is in the second clamping position, the second wiring through hole 321 is opposite to the wiring part of the main control board, so that the data cable can be quickly plugged in and out, further improving the convenience of data cable connection.

[0052] Specifically, the data line can be used for data transmission between the board to be detected and the main control board, and can also be used by the main control board to supply power to the board to be detected.

[0053] In this embodiment, the fixing device further includes a first support portion 41, which is disposed on the bottom plate 10, one end of the first clip 31 is hinged to the first support portion 41, the height of the first support portion 41 is greater than the first fixing plate 21, and the first support portion 41 is provided with a first stopper 411, so as to stop the first clip 31 when the first clip 31 is in the first clamping position and to keep a first preset distance between the first clip 31 and the first fixing plate 21. In this way, when the first clip 31 switches from the first avoidance position to the first clamping position, the first stopper 411 can stop the first clip 31, so that the first clip 31 and the first fixing plate 21 maintain a first preset distance, thereby preventing the first clip 31 from directly colliding with the plate to be detected when the position is switched, thereby preventing the plate to be detected from being damaged due to the switching of the position of the first clip 31.

[0054] In this embodiment, the fixing device further includes a second support portion 42, which is arranged on the bottom plate 10, one end of the second clip 32 is hinged to the second support portion 42, the height of the second support portion 42 is greater than the second fixing plate 22, and the second support portion 42 is provided with a second stopper 421, so as to limit the second clip 32 when the second clip 32 is in the second clamping position and to space the second clip 32 and the second fixing plate 22 by a second preset distance. In this way, when the second clip 32 switches from the second avoidance position to the second clamping position, the second clip 32 can be limited by the second stopper 421, so that the second clip 32 and the second fixing plate 22 maintain the second preset distance, so as to avoid the second clip 32 from directly colliding with the main control board when the position is switched, thereby avoiding the main control board from being damaged due to the switching of the position of the second clip 32.

[0055] In this embodiment, the first fixing plate 21 is provided with a first connecting portion 211, and the first clamping piece 31 is provided with a first connecting and matching portion 313. When the first clamping piece 31 is in the first clamping position, the first connecting portion 211 and the first connecting and matching portion 313 are connected and matched to fix the first clamping piece 31. In this way, the first clamping piece 31 can be fixed to prevent the first clamping piece 31 from being offset, thereby preventing radiation leakage or damage to the board to be detected, and ensuring the stability of the fixing device structure.

[0056] In this embodiment, the second fixing plate 22 is provided with a second connecting portion 221, and the second clamping piece 32 is provided with a second connecting and matching portion 322. When the second clamping piece 32 is in the second clamping position, the second connecting portion 221 and the second connecting and matching portion 322 are connected and matched to fix the second clamping piece 32. In this way, the second clamping piece 32 can be fixed to prevent the position of the second clamping piece 32 from shifting, thereby preventing radiation leakage or damage to the main control board, and ensuring the stability of the fixing device structure.

[0057] In this embodiment, one of the first fixing plate 21 and the first clip 31 is provided with a first connection block, and the other of the first fixing plate 21 and the first clip 31 has a first connection matching hole. The fixing device further includes a first connection member, so that the first connection member passes through the first connection hole and is connected and matched with the first connection matching hole. In this way, the first clip 31 can be fixed or loosened by plugging and unplugging the first connection member, which greatly improves the convenience of use of the fixing device.

[0058] In this embodiment, one of the second fixing plate 22 and the second clip 32 is provided with a second connection block, and the other of the second fixing plate 22 and the second clip 32 has a second connection matching hole; the fixing device further includes a second connection member, so that the second connection member passes through the second connection hole and is connected and matched with the second connection matching hole. In this way, the second clip 32 can be fixed or loosened by plugging and unplugging the second connection member, which greatly improves the convenience of using the fixing device.

[0059] Specifically, the first connecting member and the second connecting member may be spring latches.

[0060] In this embodiment, a first avoidance groove 314 is provided on one side of the first clip 31 close to the first fixing plate 21, so as to accommodate the electronic components on the board to be tested through the first avoidance groove 314. In this way, it is possible to avoid the situation where the first clip 31 directly contacts and squeezes the electronic components on the board to be tested and causes damage to the electronic components when the first clip 31 is in the first squeezing position.

[0061] In this embodiment, a second avoidance groove 323 is provided on one side of the second clip 32 close to the second fixing plate 22, so as to accommodate the electronic components on the main control board through the second avoidance groove 323. In this way, it is possible to avoid the situation where the second clip 32 directly contacts and squeezes the electronic components on the main control board and causes damage to the electronic components when the second clip 32 is in the second squeezing position.

[0062] In this embodiment, the first fixing plate 21 is provided with a plurality of first positioning protrusions, so that the plurality of positioning holes of the board to be detected are sleeved on the first positioning protrusions in a one-to-one correspondence; the second fixing plate 22 is provided with a plurality of second positioning protrusions, so that the plurality of positioning holes of the main control board are sleeved on the first positioning protrusions in a one-to-one correspondence. In this way, the board to be detected and the main control board can be positioned by the first positioning protrusions and the second positioning protrusions to achieve the fixing of the board to be detected and the main control board, and the board to be detected and the main control board can be fixed at a predetermined position, so as to prevent the first clamp 31 and the second clamp 32 from colliding with the board to be detected and the main control board when switching positions and causing damage to both.

[0063] In this embodiment, the first fixing plate 21 has a plurality of detection parts 212 arranged at intervals, and each detection part 212 is used to fix a board to be detected. In this way, multiple boards to be detected can be fixed by the fixing device at the same time, so that multiple boards to be detected can be detected at the same time, thereby improving the detection efficiency of the boards to be detected.

[0064] In this embodiment, the edge of the second fixing plate 22 is provided with an escape notch 222, so that the data line passes through the escape notch 222 and is connected to the main control board. In this way, it is convenient to connect the data line to the main control board. Specifically, the data line here is used to connect with other devices, such as a computer host.

[0065] In this embodiment, the fixing device further includes a power supply box 50, which has a receiving cavity and an opening, wherein the receiving cavity is used to receive the power board, and the bottom plate 10 covers the opening. A power supply hole 51 is provided on the side plate of the power supply box 50, and a power supply avoidance opening 324 is provided on the second clip 32, so that the power supply line passes through the power supply hole 51 and the power supply avoidance opening 324 and is connected to the main control board. In this way, the fixing device includes a separate power board, which can directly convert the external power supply and supply power to the main control board, reducing the power supply equipment that needs to be carried and improving the convenience of using the fixing device.

[0066] In this embodiment, two opposite side panels of the power supply box 50 are provided with carrying holes 52, so that the operator's hands or operating components can be inserted into the carrying holes 52. In this way, the fixing device can be conveniently carried, thereby improving the portability of the fixing device.

[0067] In this embodiment, a power hole 53 is provided on the side plate of the power supply box 50, so that the power line passes through the power hole 53 and is connected to the power board. In this way, it is convenient to supply power to the power board.

[0068] In this embodiment, the first fixing plate 21 is integrally formed with the bottom plate 10, and the first fixing plate 21 has a first heat dissipation hole 213 communicating with the accommodating cavity, and the second fixing plate 22 is integrally formed with the bottom plate 10, and the second fixing plate 22 has a second heat dissipation hole 223 communicating with the accommodating cavity. In this way, it is convenient to dissipate heat from the board to be detected and the main control board, and avoid local heat accumulation between the two, thereby ensuring the stability of the board to be detected and the main control board when in use.

[0069] Specifically, a method of using the fixing device is shown below:

[0070] The first step is to fix the power board in the accommodation cavity;

[0071] In the second step, the bottom plate 10 is placed in the opening of the power supply box 50, and the board to be tested and the main control board are placed on the first fixing plate 21 and the second fixing plate 22 respectively;

[0072] Step 3: Close the first clamp 31 and the second clamp 32 to connect the data line between the board to be tested and the main control board;

[0073] The fourth step is to connect the power cord and optical fiber cable (data cable between the motherboard and other devices) to perform RF testing.

[0074] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: the main control board and the board to be tested can be effectively separated, and the radio frequency signals at different positions can be tested separately without interfering with each other, thereby improving the accuracy and precision of the test.

[0075] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0076] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0077] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0078] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0079] In addition, it should be noted that the use of words such as "second" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device, characterized in that: include: Bottom plate (10); A first fixing plate (21) and a second fixing plate (22) are arranged on the bottom plate (10) at intervals, the first fixing plate (21) being used to fix the board to be tested, and the second fixing plate (22) being used to fix the main control board; A first clamping piece (31) and a second clamping piece (32) are adjustably arranged on the bottom plate (10), the first clamping piece (31) having a first clamping position covering the first fixing plate (21) and a first avoidance position avoiding the first fixing plate (21), and the second clamping piece (32) having a second clamping position covering the second fixing plate (22) and a second avoidance position avoiding the second fixing plate (22); The first fixing plate (21), the second fixing plate (22), the first clamping piece (31) and the second clamping piece (32) are all made of metal material; the first clamping piece (31) is provided with a detection through hole (311) for transmitting a radio frequency signal to a part to be detected of the plate to be detected through the detection through hole (311).

2. The fixing device according to claim 1, characterized in that: The first clamp (31) is provided with a first wiring through hole (312), so that the data line passes through the first wiring through hole (312) and is connected to the wiring part of the board to be tested; and / or, The second clamping piece (32) is provided with a second wiring through hole (321) so that the data line passes through the second wiring through hole (321) and is connected to the wiring part of the main control board.

3. The fixing device according to claim 1, characterized in that: The fixing device also includes: a first supporting portion (41) arranged on the bottom plate (10), one end of the first clamping piece (31) being hinged to the first supporting portion (41), the height of the first supporting portion (41) being greater than the first fixing plate (21), the first supporting portion (41) being provided with a first limiting member (411) for limiting the first clamping piece (31) when the first clamping piece (31) is in the first clamping position and for spacing the first clamping piece (31) from the first fixing plate (21) by a first preset distance; and / or, A second supporting portion (42) is arranged on the bottom plate (10); one end of the second clamp (32) is hinged to the second supporting portion (42); the height of the second supporting portion (42) is greater than that of the second fixing plate (22); and the second supporting portion (42) is provided with a second limiting member (421) so as to limit the second clamp (32) when the second clamp (32) is in the second clamping position and to space the second clamp (32) from the second fixing plate (22) by a second preset distance.

4. The fixing device according to claim 1, characterized in that: The first fixing plate (21) is provided with a first connecting portion (211), and the first clamping piece (31) is provided with a first connecting and matching portion (313), and when the first clamping piece (31) is in the first clamping position, the first connecting portion (211) and the first connecting and matching portion (313) are connected and matched to fix the first clamping piece (31); and / or, The second fixing plate (22) is provided with a second connecting portion (221), and the second clamping piece (32) is provided with a second connecting matching portion (322); when the second clamping piece (32) is in the second clamping position, the second connecting portion (221) and the second connecting matching portion (322) are connected and matched to fix the second clamping piece (32).

5. The fixing device according to claim 1, characterized in that: One of the first fixing plate (21) and the first clamp (31) is provided with a first connecting block, and the other of the first fixing plate (21) and the first clamp (31) has a first connecting fitting hole; the fixing device further comprises a first connecting member, so that the first connecting member passes through the first connecting hole and is connected and fitted with the first connecting fitting hole; and / or, One of the second fixing plate (22) and the second clamp (32) is provided with a second connecting block, and the other of the second fixing plate (22) and the second clamp (32) has a second connecting fitting hole; the fixing device also includes a second connecting member, so that the second connecting member passes through the second connecting hole and is connected and fitted with the second connecting fitting hole.

6. The fixing device according to claim 1, characterized in that: A first avoidance groove (314) is provided on one side of the first clamp (31) close to the first fixing plate (21) so as to accommodate the electronic components on the board to be tested through the first avoidance groove (314); and / or, A second avoidance groove (323) is provided on one side of the second clamping piece (32) close to the second fixing plate (22) so as to accommodate the electronic components on the main control board through the second avoidance groove (323).

7. The fixing device according to claim 1, characterized in that: The first fixing plate (21) is provided with a plurality of first positioning protrusions, so that the plurality of positioning holes of the plate to be tested are sleeved on the first positioning protrusions in a one-to-one correspondence; and / or; The second fixing plate (22) is provided with a plurality of second positioning protrusions, so that the plurality of positioning holes of the main control board are sleeved on the first positioning protrusions in a one-to-one correspondence.

8. The fixing device according to claim 1, characterized in that: The first fixing plate (21) has a plurality of detection parts (212) arranged at intervals, each detection part (212) being used to fix a plate to be detected; and / or, An escape notch (222) is provided at the edge of the second fixing plate (22), so that the data line passes through the escape notch (222) and is connected to the main control board.

9. The fixing device according to any one of claims 1 to 8, characterized in that The fixing device further comprises a power supply box (50), the power supply box (50) having a receiving cavity and an opening, the receiving cavity being used to receive the power board, and the bottom plate (10) covering the opening; A power supply hole (51) is provided on the side plate of the power supply box (50), and a power supply avoidance opening (324) is provided on the second clip (32), so that the power supply line passes through the power supply hole (51) and the power supply avoidance opening (324) to be connected to the main control board.

10. The fixing device according to claim 9, characterized in that: The two opposite side panels of the power supply box (50) are provided with carrying holes (52) so that the operator's hands or operating components can be inserted into the carrying holes (52); and / or, A power hole (53) is provided on the side plate of the power supply box (50), so that the power line passes through the power hole (53) and is connected to the power board; and / or, The first fixing plate (21) and the bottom plate (10) are integrally formed, and the first fixing plate (21) has a first heat dissipation hole (213) communicating with the accommodating cavity; and / or, The second fixing plate (22) is integrally formed with the bottom plate (10), and the second fixing plate (22) has a second heat dissipation hole (223) in communication with the accommodating cavity.

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