Circuit board mounting structure

Abstract

The utility model relates to the field of circuit boards, and discloses a circuit board mounting structure, which comprises a bottom plate, fixed mounting holes, connecting blocks, placing grooves and extension blocks, the four corners of the upper surface of the bottom plate are provided with through fixed mounting holes, and the middle of the upper surface of the bottom plate is symmetrically provided with two placing grooves. Extension blocks are symmetrically and fixedly installed on the side face of a long shaft on one side of the bottom plate, grooves are symmetrically formed in the two side faces of each extension block, connecting blocks are symmetrically and fixedly installed on the upper surface of the bottom plate and correspond to the middles of the two adjacent fixed installation holes, and clamping grooves are formed in the top faces of the connecting blocks. One side face of the connecting block is provided with a connecting hole penetrating to the other side face, the extension block is provided with a clamping assembly, a damping mechanism is arranged in the containing groove, the connecting block is provided with an expanding assembly, and the side face of the connecting block is provided with a limiting assembly. The circuit board can be accurately fixed, and the overall performance is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit board, concretely is a circuit board mounting structure. BACKGROUND

[0002] The kind of circuit board includes ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, super thin circuit board and super thin circuit board etc., when installing circuit board, usually need to be fixed on the equipment with the help of specific mounting structure, the current circuit board mounting mode is relatively single, does not support superposition, and is not convenient for the connection between multiple circuit boards, in addition, the circuit board is vulnerable to damage when being impacted, therefore we provide a circuit board mounting structure. SUMMARY

[0003] (I) technical problem solved

[0004] In view of the deficiencies in the prior art, the utility model provides a circuit board mounting structure, and solves the above problems.

[0005] (II) technical scheme

[0006] In order to realize the above purpose, the utility model provides the following technical scheme: a circuit board mounting structure, including bottom plate, fixed mounting hole, connecting block, placing groove, extension block, the upper surface four corners of bottom plate are equipped with the fixed mounting hole that penetrates, the upper surface middle part of bottom plate is equipped with two placing grooves symmetrically, the long axis side of one side of bottom plate is fixedly installed with extension block symmetrically, the both sides of extension block are equipped with recess symmetrically, the upper surface of bottom plate is fixedly installed with connecting block symmetrically in the middle of two adjacent fixed mounting holes, the top of connecting block is equipped with the clamping groove, and the side of connecting block is equipped with the connecting hole that penetrates to the side of another, the extension block is provided with clamping assembly, the placing groove is provided with damping mechanism, the connecting block is provided with expansion assembly, and the side of connecting block is provided with limit component.

[0007] Preferably, the clamping assembly comprises a trapezoidal clamping block, a clamping groove and a spring two, the spring two is fixedly installed at the middle of the recess of the extension block, the other end of the spring two is fixedly connected with the lower bottom surface of the trapezoidal clamping block, the width of the lower bottom surface of the trapezoidal clamping block is consistent with the recess width of the extension block, the clamping groove is formed on the other long axis side of the bottom plate, the shape of the clamping groove is consistent with the shape formed by the extension block, the spring two and the trapezoidal clamping block, and the clamping of the clamping groove and the trapezoidal clamping block enables the bottom plate to be connected with another bottom plate.

[0008] Preferably, the damping mechanism includes a threaded rod, a damping plate two, a sliding block, the bottom surface of the placement slot is fixedly connected with the bottom surface of the damping plate two, the upper surface of the damping plate two is fixedly connected with a connecting column in a symmetrical manner, the top surface of the connecting column of the damping plate two is provided with a connecting sliding groove, the upper surface of the damping plate two is fixedly connected with a connecting seat in a symmetrical manner at the middle of the connecting column of the damping plate two, a threaded rod is fixedly installed in the connecting seat of the two damping plates two, the side surface of the sliding block is provided with a threaded hole, the threaded rod is threadedly connected with two sliding blocks, and the top surface of the sliding block is fixedly installed with a rotating seat.

[0009] Preferably, the damping mechanism further includes a damping plate one, a spring three and a spring four, the bottom surface of the damping plate one is fixedly connected with a connecting column in a symmetrical manner, the connecting column of the damping plate one is coaxially and slidingly connected with the connecting sliding groove provided on the connecting column of the damping plate two, the bottom surface of the damping plate one is fixedly connected with a connecting seat in a symmetrical manner at the middle of the connecting column of the damping plate one, a connecting rod is coaxially and rotationally connected with the two connecting seats of the damping plate one, the other end of the connecting rod is coaxially and rotationally connected with the rotating seat of the sliding block, the spring four is fixedly installed on the opposite surfaces of the two connecting rods, a plurality of buffer sponges are installed on the upper surface of the damping plate one at equal distances, another damping plate one is fixedly installed on the arc surface of the damping plate one away from the damping plate one, the upper surface of the damping plate two is fixedly connected with the spring three at the periphery of the connecting column of the damping plate two, and the other end of the spring three is fixedly connected with the bottom surface of the spring three at the periphery of the connecting column of the spring three.

[0010] Preferably, the expansion assembly includes a cylindrical clamping block, a clamping fixed block and a spring one, the bottom surface of the bottom plate is fixedly connected with the clamping fixed block in a symmetrical manner, the clamping fixed block is in the same shape and size as the clamping groove provided on the top surface of the connecting block, the two side surfaces of the clamping fixed block are fixedly connected with the spring one in a symmetrical manner, the other end of the spring one is fixedly connected with the plane of the cylindrical clamping block, the clamping fixed block is clamped in the clamping groove of the connecting block, and the cylindrical clamping block is coaxially and movably connected with the connecting hole of the connecting block.

[0011] Preferably, the limiting assembly includes a connecting fixed column, a limiting plate and a connecting hole, a plurality of connecting holes are symmetrically and equidistantly arranged on the opposite surfaces of the two connecting blocks, and the connecting holes are arranged in an up-down manner, the connecting fixed column is coaxially and slidingly connected with the two connecting holes, and the one end of the connecting fixed column protruding from the connecting hole is fixedly connected with the limiting plate.

[0012] (Three) beneficial effects

[0013] Compared with the prior art, the circuit board mounting structure has the following beneficial effects:

[0014] 1. The circuit board mounting structure, through the clamping assembly on the extension block, utilizes the cooperation of spring two and the trapezoidal clamping block, can conveniently realize the connection of the bottom plate and another bottom plate, makes multiple circuit board mounting structures can be combined according to needs, effectively expands the utilization mode of the installation space, meets the diversified needs of the number and layout of circuit boards in complex equipment, enhances the adaptability and expansion of the overall architecture of the equipment.

[0015] 2. The circuit board mounting structure, the damping mechanism in the placing groove provides protection for the circuit board from multiple aspects, when impacted, damping plate one and damping plate two slide in the sliding groove through the connecting column, the linkage of the connecting rod and the sliding block, and the elastic buffering of spring three and spring four, cooperate with the buffer sponge on the damping plate one, can effectively disperse and absorb the impact force, greatly reduces the risk of damage of the circuit board due to external forces such as vibration and collision, protects the stability and service life of the circuit board, improves the reliability of the equipment operation.

[0016] 3. The circuit board mounting structure, the expansion assembly on the connecting block simplifies the connection operation with other components or expansion modules by means of spring one, the cooperation of the cylindrical clamping block and the clamping groove, and the connecting hole, facilitates quick addition or replacement of related components when the equipment is upgraded or the function is adjusted, improves the installation efficiency and the convenience of equipment maintenance, at the same time, the inverted "L" shaped limiting plate of the limiting assembly can precisely fix the position of the circuit board by sliding in the connecting hole through the connecting fixed column, prevent its displacement, ensure the accuracy and stability of installation, further optimize the overall installation performance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is an explosion schematic diagram of the utility model;

[0019] Figure 3 It is a sectional view schematic diagram of the utility model;

[0020] Figure 4 It is a damping mechanism schematic diagram of the utility model.

[0021] In the drawing: 1, bottom plate; 2, trapezoidal clamping block; 3, fixed mounting hole; 4, clamping groove; 5, connecting block; 6, cylindrical clamping block; 7, connecting fixed column; 8, limiting plate; 9, circuit board body; 10, placing groove; 11, damping plate one; 12, threaded rod; 13, extension block; 14, clamping fixed block; 15, spring one; 16, spring two; 17, spring three; 18, damping plate two; 19, connecting rod; 20, spring four; 21, sliding block; 22, connecting hole. DETAILED DESCRIPTION

[0022] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made belong to the scope of protection of the present application.

[0023] Please refer to Figures 1-4 The utility model provides a circuit board mounting structure, including bottom plate 1, fixed mounting hole 3, connecting block 5, placing groove 10, extension block 13, the upper surface four corners of bottom plate 1 are equipped with the fixed mounting hole 3 that penetrates, when installing circuit board, first utilize the fixed mounting hole 3 on bottom plate 1, through screw etc. connecting piece, bottom plate 1 is fixed in the specified position of equipment, provides the stable basis for entire mounting structure, the upper surface middle part of bottom plate 1 is equipped with two placing grooves 10 symmetrically, the long axis side of one side of bottom plate 1 is equipped with extension block 13 symmetrically and fixedly installed, the both sides of extension block 13 are equipped with recess symmetrically, the upper surface of bottom plate 1 is equipped with connecting block 5 symmetrically and fixedly installed in the middle of two adjacent fixed mounting hole 3, the top of connecting block 5 is equipped with the clamping groove, and the side of connecting block 5 is equipped with the connecting hole that penetrates to the other side, extension block 13 is provided with clamping assembly, placing groove 10 is provided with damping mechanism, and connecting block 5 is provided with expansion assembly, and the side of connecting block 5 is provided with limiting assembly.

[0024] Further, the clamping assembly includes a trapezoidal clamping block 2, a clamping groove 4, and a spring 16. The spring 16 is fixedly installed in the middle of the recess on both sides of the extension block 13. The other end of the spring 16 is fixedly connected with the lower bottom surface of the trapezoidal clamping block 2. The width of the lower bottom surface of the trapezoidal clamping block 2 is consistent with the width of the recess of the extension block 13. The clamping groove 4 is formed on the long axis side of the other side of the bottom plate 1. The shape of the clamping groove 4 is consistent with the shape formed by the extension block 13, the spring 16, and the trapezoidal clamping block 2. The clamping of the clamping groove 4 and the trapezoidal clamping block 2 enables the bottom plate 1 to be connected with another bottom plate 1. When multiple circuit board mounting structures need to be connected, the extension block 13 of one bottom plate 1 is aligned with the clamping groove 4 of another bottom plate 1. Since the spring 16 in the middle of the recess on both sides of the bottom plate 1 is in a natural state or within a certain elastic deformation range, the trapezoidal clamping block 2 partially protrudes from the recess. During the docking process, the trapezoidal clamping block 2 is pressed by the clamping groove 4, the spring 16 is compressed, and the trapezoidal clamping block 2 gradually retracts into the recess. When the trapezoidal clamping block 2 completely enters the clamping groove 4, the trapezoidal clamping block 2 is reset under the elastic force of the spring 16, achieving tight clamping with the clamping groove 4 and thus completing the connection of the two bottom plates 1. The actual demand can be achieved to stack and combine multiple mounting structures, effectively expanding the utilization mode of the installation space, meeting the diversified demand for the number and layout of circuit boards in complex equipment, and enhancing the adaptability and expansion of the overall architecture of the equipment.

[0025] Further, the damping mechanism comprises the threaded rod 12, the damping plate two 18 and the sliding block 21, the bottom surface of the damping plate two 18 is fixedly connected with the bottom surface of the placing groove 10, the upper surface of the damping plate two 18 is symmetrically fixedly installed with the connecting column, the top surface of the connecting column of the damping plate two 18 is provided with the connecting sliding groove, the upper surface of the damping plate two 18 is symmetrically fixedly installed with the connecting seat corresponding to the connecting column of the damping plate two 18, the threaded rod 12 is fixedly installed between the connecting seats of the two damping plate two 18, the side surface of the sliding block 21 is provided with the threaded hole, the threaded rod 12 is threadedly connected with the two sliding blocks 21, and the rotating seat is fixedly installed on the top surface of the sliding block 21.

[0026] Further, the damping mechanism further comprises the damping plate one 11, the spring three 17 and the spring four 20, the bottom surface of the damping plate one 11 is symmetrically fixedly installed with the connecting column, the connecting column of the damping plate one 11 and the connecting sliding groove provided on the connecting column of the damping plate two 18 are coaxially and slidably connected, the bottom surface of the damping plate one 11 is symmetrically fixedly installed with the connecting seat corresponding to the connecting column of the damping plate one 11, the two connecting seats of the damping plate one 11 are coaxially and rotatably connected with the connecting rod 19, the other end of the connecting rod 19 is coaxially and rotatably connected with the rotating seat of the sliding block 21, the spring four 20 is fixedly installed on the opposite surface of the two connecting rods 19, a plurality of buffer sponges are installed on the upper surface of the damping plate one 11, another damping plate one 11 is fixedly installed on the arc surface of the damping plate one 11 away from the buffer sponge of the damping plate one 11, the buffer sponge on the damping plate one 11 further consumes and disperses the residual impact force through the elasticity and porous structure of the buffer sponge, so that the circuit board body 9 is protected from damage in all directions, the spring three 17 is fixedly installed on the upper surface of the damping plate two 18 corresponding to the periphery of the connecting column of the damping plate two 18, the other end of the spring three 17 is fixedly connected with the bottom surface of the spring three 17 corresponding to the periphery of the connecting column of the spring three 17, under normal circumstances, the circuit board body 9 is placed on the damping plate one 11, the connecting column of the damping plate one 11 and the connecting column of the damping plate two 18 are in a relatively stable position in the connecting sliding groove, and the spring three 17 is in a certain compression or stretching state, so as to provide a certain pre-tightening force for the whole damping structure, when the equipment is subjected to external impact or vibration, the impact force is transmitted to the circuit board body 9 and the mounting structure, at this time, the damping plate one 11 is first subjected to upward or downward force, the connecting column of the damping plate one 11 starts to slide in the connecting sliding groove of the damping plate two 18, at the same time, the damping plate one 11 drives the sliding block 21 to move on the threaded rod 12 through the connecting seat and the connecting rod 19, the movement of the sliding block 21 changes the angle and position of the connecting rod 19, so that the spring four 20 is stretched or compressed, further absorbing and dispersing the impact force, the damping plate two 18 is relatively stable in position due to the fixed connection with the bottom surface of the placing groove 10, but under the action of the impact force, through the coordinated movement of the connecting column and the damping plate one 11 and the elastic deformation of the spring three 17, part of the impact force can also be effectively buffered.

[0027] Further, the expansion assembly includes a cylindrical clamping block 6, a clamping fixed block 14, a spring 15, and the bottom surface of the bottom plate 1 is symmetrically provided with the clamping fixed block 14. The shape and size of the clamping fixed block 14 are consistent with the clamping groove of the top surface of the connecting block 5. The two side surfaces of the clamping fixed block 14 are symmetrically and fixedly connected with the spring 15. The other end of the spring 15 is fixedly connected with the flat surface of the cylindrical clamping block 6. The clamping fixed block 14 is clamped with the clamping groove of the connecting block 5. The cylindrical clamping block 6 is coaxially and movably connected with the connecting hole of the connecting block 5. When the device needs to be upgraded or an expansion module is added, the clamping fixed block 14 is connected with the connecting block 5. Specifically, the clamping groove of the clamping fixed block 14 is aligned with the connecting block 5. Due to the elastic force of the spring 15, the cylindrical clamping block 6 can be flexibly moved within a certain range. During the docking process, the cylindrical clamping block 6 is extruded to move to both sides. When the component is installed in place, it is reset under the action of the spring 15, clamped into the connecting hole, and stably connected with the connecting block 5. The expansion of the device is convenient and fast.

[0028] Further, the limiting assembly includes a connecting fixed column 7, a limiting plate 8, and a connecting hole 22. A plurality of connecting holes 22 are symmetrically and equidistantly arranged on the opposite surfaces of the two connecting blocks 5 and arranged in up and down. The coaxially slidingly connected with the connecting fixed column 7 is arranged on the left and right connecting holes 22. The connecting fixed column 7 is fixedly connected with the limiting plate 8 at one end protruding from the connecting hole 22. The limiting plate 8 is in the shape of an inverted "L". The lower surface of the limiting plate 8 is closely attached to the circuit board body 9. The other surface of the circuit board body 9 is closely attached to the top surface of the damping plate 11. The limiting of the circuit board body 9 is achieved by inserting the connecting fixed column 7 into the connecting hole on the opposite surface of the connecting block 5 so that the limiting plate 8 is in the appropriate position. Since the limiting plate 8 is in the shape of an inverted "L" and its lower surface is closely attached to the circuit board body 9, during the operation of the device, the circuit board body 9 can be effectively prevented from deviating due to vibration, displacement and other factors, ensuring that the circuit board body 9 is always in the correct installation position and ensuring the stability of the circuit connection and the normal operation of the device.

[0029] Working principle: when installing the circuit board, first use the fixed mounting hole 3 on the base plate 1 to fix the base plate 1 on the designated position of the equipment through connecting parts such as screws, and provide a stable foundation for the entire installation structure. When multiple circuit board installation structures need to be connected, align the extension block 13 of one base plate 1 with the clamping groove 4 of another base plate 1. Since the spring 2 in the middle of the groove on both sides of the base plate 1 is in a natural state or within a certain elastic deformation range, the trapezoidal clamping block 2 partially protrudes from the groove. During the butt joint process, the trapezoidal clamping block 2 is extruded by the clamping groove 4, the spring 2 is compressed, and the trapezoidal clamping block 2 gradually retracts into the groove. When the trapezoidal clamping block 2 completely enters the clamping groove 4, the trapezoidal clamping block 2 resets under the action of the spring 2, achieving tight clamping with the clamping groove 4, thereby completing the connection of the two base plates 1. According to actual needs, multiple installation structures can be stacked and combined. Under normal circumstances, the circuit board body 9 is placed on the shock-absorbing plate 11, the bottom surface connecting column of the shock-absorbing plate 11 and the connecting column of the shock-absorbing plate 18 are in a relatively stable position in the connecting slide groove, and the spring 3 is in a certain compression or stretching state, providing a certain pre-tightening force for the entire shock-absorbing structure. When the equipment is subjected to external impact or vibration, the impact force is transmitted to the circuit board body 9 and the installation structure. At this time, the shock-absorbing plate 11 is first subjected to upward or downward force, and its connecting column starts to slide in the connecting slide groove of the shock-absorbing plate 18. At the same time, the shock-absorbing plate 11 moves the sliding block 21 on the threaded rod 12 through the connecting seat and connecting rod 19. The movement of the sliding block 21 changes the angle and position of the connecting rod 19, causing the spring 4 to be stretched or compressed, further absorbing and dispersing the impact force. The shock-absorbing plate 18 is relatively stable due to its fixed connection with the bottom surface of the placement groove 10, but under the action of the impact force, through the coordinated movement of the connecting column and the shock-absorbing plate 11 and the elastic deformation of the spring 3, it can also effectively buffer part of the impact force. In addition, the shock-absorbing sponge on the shock-absorbing plate 11 further consumes and disperses the remaining impact force through its elasticity and porous structure, thereby protecting the circuit board body 9 from damage in all directions. When the equipment needs to be upgraded or additional expansion modules are added, the clamping fixed block 14 is connected with the connecting block 5. The specific operation is to align the clamping groove of the clamping fixed block 14 with the connecting block 5. Due to the elastic force of the spring 1, the cylindrical clamping block 6 can move flexibly within a certain range. During the butt joint process, the cylindrical clamping block 6 is extruded and moves to both sides. When the components are installed in place, they reset under the action of the spring 1, clamping into the connecting hole, achieving stable connection between the clamping fixed block 14 and the connecting block 5, and conveniently and quickly completing the expansion of the equipment. For the positioning of the circuit board body 9, insert the connecting fixed column 7 into the connecting hole on the opposite surface of the connecting block 5 to place the limiting plate 8 in the appropriate position. Since the limiting plate 8 is in the shape of an inverted "L", its lower surface tightly fits the circuit board body 9. During the operation of the equipment, it can effectively prevent the circuit board body 9 from shifting due to vibration, displacement, and other factors, ensuring that the circuit board body 9 is always in the correct installation position.Stability of the connection of the assurance circuit and normal operation of the device.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circuit board mounting structure, comprising a base plate (1), mounting holes (3), connecting blocks (5), placement grooves (10), and extension blocks (13), wherein the base plate (1) has through mounting holes (3) at the four corners of its upper surface, two placement grooves (10) are symmetrically opened in the middle of the upper surface of the base plate (1), and extension blocks (13) are symmetrically fixedly mounted on one long axis side of the base plate (1), and grooves are symmetrically opened on both sides of the extension blocks (13), and connecting blocks (5) are symmetrically fixedly mounted on the upper surface of the base plate (1) in the middle of two adjacent mounting holes (3), and slots are opened on the top surface of the connecting blocks (5), and connecting holes extending to the other side are opened on the side of the connecting blocks (5), characterized in that: The extension block (13) is provided with a clamping assembly, the placing groove (10) is provided with a damping mechanism, the connecting block (5) is provided with an expansion assembly, and the side surface of the connecting block (5) is provided with a limiting assembly.

2. The circuit board mounting structure according to claim 1, characterized by: The clamping assembly comprises a trapezoidal clamping block (2), a clamping groove (4) and a spring (16), the middle of the groove on the two sides of the extension block (13) is fixedly installed with the spring (16), the other end of the spring (16) is fixedly connected with the lower bottom surface of the trapezoidal clamping block (2), the width of the lower bottom surface of the trapezoidal clamping block (2) is consistent with the groove width of the extension block (13), the other long axis side surface of the bottom plate (1) is provided with the clamping groove (4), the shape of the clamping groove (4) is consistent with the shape of the extension block (13), the spring (16) and the trapezoidal clamping block (2), and the clamping of the clamping groove (4) and the trapezoidal clamping block (2) enables the bottom plate (1) to be connected with another bottom plate (1).

3. The circuit board mounting structure of claim 1, wherein: The damping mechanism comprises a threaded rod (12), a damping plate (18) and a sliding block (21), the bottom surface of the placing groove (10) is fixedly connected with the bottom surface of the damping plate (18), the upper surface of the damping plate (18) is fixedly installed with connecting columns in a symmetrical manner, the top surface of the connecting column of the damping plate (18) is provided with a connecting sliding groove, the upper surface of the damping plate (18) is fixedly installed with connecting seats in a symmetrical manner at the middle of the connecting column of the damping plate (18), the connecting seats of the two damping plates (18) are fixedly installed with the threaded rod (12) in the middle, the side surface of the sliding block (21) is provided with a threaded hole, the threaded rod (12) is threadedly connected with two sliding blocks (21), and the top plane of the sliding block (21) is fixedly installed with a rotating seat.

4. The circuit board mounting structure according to claim 3, characterized by: The damping mechanism further comprises a damping plate (11), a spring (17) and a spring (20), the bottom surface of the damping plate (11) is fixedly installed with connecting columns in a symmetrical manner, the connecting column of the damping plate (11) is coaxially and slidingly connected with the connecting sliding groove provided on the connecting column of the damping plate (18), the bottom surface of the damping plate (11) is fixedly installed with connecting seats in a symmetrical manner at the middle of the connecting column of the damping plate (11), the two connecting seats of the damping plate (11) are coaxially and rotationally connected with connecting rods (19), the other end of the connecting rod (19) is coaxially and rotationally connected with the rotating seat of the sliding block (21), the opposite surfaces of the left and right connecting rods (19) are fixedly installed with springs (20), a plurality of buffer sponges are installed on the upper surface of the damping plate (11) at equal intervals, another damping plate (11) is fixedly installed on the circular arc surface of the buffer sponge of the damping plate (11) away from the damping plate (11), the upper surface of the damping plate (18) is fixedly installed with springs (17) around the connecting column of the damping plate (18), and the other end of the spring (17) is fixedly connected with the bottom surface of the spring (17) around the connecting column of the spring (17).

5. The circuit board mounting structure of claim 1, wherein: The expansion assembly includes a cylindrical clamping block (6), a clamping fixed block (14), a spring (15), and the bottom surface of the bottom plate (1) is symmetrically provided with the clamping fixed block (14), the shape and size of the clamping fixed block (14) are consistent with the clamping groove of the top surface of the connecting block (5), the two side surfaces of the clamping fixed block (14) are symmetrically and fixedly connected with the spring (15), the other end of the spring (15) is fixedly connected with the plane of the cylindrical clamping block (6), the clamping fixed block (14) is clamped with the clamping groove of the connecting block (5), and the cylindrical clamping block (6) is coaxially and movably connected with the connecting hole of the connecting block (5).

6. The circuit board mounting structure according to claim 4, characterized by: The limiting assembly includes a connecting fixed column (7), a limiting plate (8) and a connecting hole (22), a plurality of connecting holes (22) are symmetrically and equidistantly arranged on the opposite surfaces of the two connecting blocks (5) and arranged in up and down directions, coaxially and slidably connected with the connecting fixed column (7) on the left and right connecting holes (22), fixedly connected with the limiting plate (8) on one end of the connecting fixed column (7) protruding from the connecting hole (22), and the limiting plate (8) is in an inverted "L" shape, the lower surface of the limiting plate (8) is closely attached to the circuit board body (9), and the other surface of the circuit board body (9) is closely attached to the top surface of the damping plate (11).

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