Circuit board quick-mounting structure

Abstract

The utility model discloses a circuit board quick-mounting structure, which relates to the technical field of circuit board mounting and comprises a circuit board main body, a mounting hole and a quick-mounting component. According to the utility model, through the arrangement of the quick-mounting assembly, the upward movement and downward movement locking of the extrusion unit can be realized through the cooperation of the pressing self-locking unit and the wiring trough, and the edge of the mounting hole can be pressed by the clamping block through the extrusion of the V-shaped connecting sheet by the upward movement of the extrusion unit, so that the fixation of the circuit board main body is realized; the extrusion unit moves downwards to relieve extrusion on the V-shaped connecting piece, the clamping blocks reset to relieve edge pressing of the mounting hole, meanwhile, the outer diameter of the multiple clamping blocks is smaller than the inner diameter of the mounting hole, convenient disassembly of the circuit board body can be achieved, and compared with a traditional fixing mode that a screw penetrates through the mounting hole to be in threaded connection with the mounting column, operation is simpler and more convenient, and the practicability of the circuit board is improved. And meanwhile, the problem that the installation time is prolonged due to screw falling can be effectively avoided, and the disassembly and assembly efficiency of the circuit board main body is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board installation, in particular to a circuit board quick-installation structure. Background Art

[0002] PCB, whose Chinese name is printed circuit board, is also called printed circuit board. It is an important electronic component, a support for electronic components, and a carrier for electrical connections of electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board. Circuit boards can be divided into soft boards, hard boards, and soft-hard combination boards according to their characteristics.

[0003] Among them, the installation of rigid circuit boards is mostly fixed by screws. A mounting hole is opened on the circuit board, and a mounting column is preset at the mounting position. Then, the screws are passed through the mounting hole and threadedly connected to the mounting column to achieve fixed installation of the circuit board. In actual operation, a magnetic screwdriver is generally used to transfer and tighten the screws. Since the screws fixing the circuit board are small in size, the adsorption force between the screws and the magnetic screwdriver is small, and the screws and the magnetic screwdriver are prone to fall off. When this happens, it takes a certain amount of time to find the screws, which affects the installation efficiency of the circuit board. Based on this, a circuit board quick-installation structure is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit board quick-install structure in order to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a circuit board quick-install structure, comprising a circuit board body and a mounting hole provided inside the circuit board body, wherein the circuit board body is connected to the quick-install assembly through the mounting hole to achieve installation and fixation;

[0006] The quick-install assembly includes a mounting column, a fixing stud, a square telescopic slot, a round hole slot, a V-shaped connecting piece, a clamping block, an extrusion unit, a push-to-lock unit, and a guide slot;

[0007] The fixing stud is fixed to the bottom of the mounting column, and the mounting column is threadedly connected to a preset position of the device housing through the fixing stud;

[0008] The square expansion slot and the round hole slot are provided inside the mounting column, and the round hole slot is located at the top of the square expansion slot and penetrates to the top of the mounting column;

[0009] The bottom of the V-shaped connecting piece is fixed to the top of the inner wall of the square expansion slot, the top of the V-shaped connecting piece extends through the circular hole slot and protrudes above the mounting column, and the top of the V-shaped connecting piece passes through the mounting hole and is fixedly connected to the card block, and the V-shaped connecting piece and the card block are arranged in a ring distribution with the center of the circular hole slot as the center, when the V-shaped connecting piece is in an undeformed initial state, the outer diameters of the plurality of the card blocks are smaller than the inner diameter of the mounting hole, and when the V-shaped connecting piece is squeezed and deformed, the outer diameters of the plurality of the card blocks are larger than the inner diameter of the mounting hole and the bottoms of the card blocks are attached to the upper surface of the circuit board body;

[0010] The extrusion unit is distributed inside the square telescopic slot and penetrates the circular hole slot to the top of the mounting column. The extrusion unit that moves up and down is used to squeeze or release the V-shaped connecting piece.

[0011] The press-to-lock unit is distributed at the bottom of the square telescopic slot and is used to provide thrust for the upward movement of the extrusion unit;

[0012] The guide grooves are symmetrically arranged on both sides of the inner wall of the square telescopic groove, and are used to limit the upward position and the downward position of the pressing self-locking unit.

[0013] As a further solution of the utility model: the extrusion unit includes a conical pressure column, a connecting column, and a top block;

[0014] The conical pressure column, the connecting column and the top block are fixed in sequence from bottom to top along the vertical direction;

[0015] The conical pressure column is distributed inside the square expansion slot and the top of the conical pressure column is in contact with the inner side of the multiple V-shaped connecting pieces. The connecting column passes through the middle of the multiple V-shaped connecting pieces and protrudes above the clamping block.

[0016] The V-shaped connecting piece is expanded outward by squeezing the V-shaped connecting piece by moving the conical pressure column upward, and the squeezing of the V-shaped connecting piece is released by moving the conical pressure column downward, and the V-shaped connecting piece shrinks inward and resets under the action of its own elastic force.

[0017] As a further solution of the utility model: the push-to-lock unit includes a T-shaped installation groove, a T-shaped connecting block, a W-shaped spring piece, and a self-locking elastic steel wire;

[0018] The T-shaped mounting groove is opened at the bottom of the conical pressure column, the T-shaped connecting block is clamped on the inner side of the T-shaped mounting groove, the W-shaped spring piece is adhesively fixed to the top of the T-shaped connecting block, and the bottom of the W-shaped spring piece is attached to the bottom of the inner wall of the square expansion groove, and the deformed and contracted W-shaped spring piece is used to provide an upward thrust for the conical pressure column;

[0019] The self-locking elastic steel wire is symmetrically fixed on both sides of the T-shaped connecting block and extends into the inside of the guide groove.

[0020] As a further solution of the utility model: the guide groove includes a top transverse groove, a downward inclined groove, a bottom transverse groove, a self-locking groove, an unlocking downward groove, and an upward inclined groove;

[0021] The downward moving inclined groove and the upward moving inclined groove are distributed at the bottom of both ends of the top transverse groove, the bottom transverse groove is distributed at the bottom of the downward moving inclined groove, the self-locking groove and the unlocking downward moving groove are respectively distributed at the top and bottom of one end of the bottom transverse groove away from the downward moving inclined groove, and the bottom of the unlocking downward moving groove is connected to the bottom of the upward moving inclined groove;

[0022] The top transverse groove, the downward inclined groove, the bottom transverse groove, the self-locking groove, the unlocking downward groove, and the upward inclined groove are connected to each other in sequence;

[0023] The self-locking elastic steel wire moves along the track of the guide groove during the up and down movement, thereby realizing self-locking of the upper and lower positions of the conical pressure column.

[0024] As a further solution of the utility model: the self-locking elastic steel wire has good elasticity, and the top of the downward inclined groove and the bottom of the unlocking downward groove are symmetrically distributed with the connection end point of the self-locking elastic steel wire and the T-shaped connecting block as the center.

[0025] As a further solution of the present invention: the W-shaped spring piece is always in a contracted state, and the lateral length of the T-shaped connecting block is smaller than the lateral length of the T-shaped mounting groove.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] By setting a quick-release component, the self-locking and unlocking operations of the extrusion unit can be realized by the cooperation of the self-locking unit and the wire groove, thereby realizing the upward and downward locking of the extrusion unit. The V-shaped connecting piece is squeezed by the upward movement of the extrusion unit, and the edge of the mounting hole can be pressed by the card block, thereby fixing the circuit board body. The squeezing of the V-shaped connecting piece is released by moving the extrusion unit downward, and the card block is reset to release the pressing of the edge of the mounting hole. At the same time, the outer diameters of multiple card blocks are smaller than the inner diameters of the mounting holes, so that the circuit board body can be easily disassembled. Compared with the traditional fixing method in which the screws pass through the mounting holes to be threadedly connected to the mounting columns, not only is the operation simpler and more convenient, but it can also effectively avoid the problem of screws falling off and thus prolonging the installation time, thereby effectively improving the disassembly and assembly efficiency of the circuit board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the quick-install assembly of the utility model;

[0030] Figure 3 It is a structural cross-sectional view of the quick-install assembly of the utility model;

[0031] Figure 4 It is a cross-sectional exploded view of the quick-install assembly of the utility model;

[0032] Figure 5 For this utility model Figure 4 A magnified schematic diagram of the position A in the middle;

[0033] Figure 6 It is a schematic diagram of the disassembled state of the pressing self-locking unit and the extrusion unit of the utility model.

[0034] In the figure: 1. circuit board body; 2. mounting hole; 3. quick-release assembly; 301. mounting column; 302. fixing stud; 303. square expansion slot; 304. round hole slot; 305. V-shaped connecting piece; 306. clamping block; 307. extrusion unit; 3071. conical pressure column; 3072. connecting column; 3073. top block; 308. press self-locking unit; 3081. T-shaped mounting slot; 3082. T-shaped connecting block; 3083. W-shaped spring; 3084. self-locking elastic steel wire; 309. guide slot; 3091. top horizontal slot; 3092. downward inclined slot; 3093. bottom horizontal slot; 3094. self-locking slot; 3095. unlocking downward slot; 3096. upward inclined slot. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figures 1 to 6 In an embodiment of the utility model, a circuit board quick-install structure includes a circuit board body 1 and a mounting hole 2 provided inside the circuit board body 1. The circuit board body 1 is connected to a quick-install component 3 through the mounting hole 2 to achieve installation and fixation;

[0037] The quick-install assembly 3 includes a mounting column 301, a fixing stud 302, a square telescopic slot 303, a round hole slot 304, a V-shaped connecting piece 305, a clamping block 306, a squeezing unit 307, a press-to-lock unit 308, and a guide slot 309;

[0038] The fixing stud 302 is fixed to the bottom of the mounting column 301, and the mounting column 301 is threadedly connected to a preset position of the device housing through the fixing stud 302;

[0039] The square expansion slot 303 and the round hole slot 304 are provided inside the mounting column 301 , and the round hole slot 304 is located at the top of the square expansion slot 303 and penetrates to the top of the mounting column 301 ;

[0040] The bottom of the V-shaped connecting piece 305 is fixed to the top of the inner wall of the square expansion slot 303, the top of the V-shaped connecting piece 305 extends through the circular hole slot 304 and protrudes above the mounting column 301, and the top of the V-shaped connecting piece 305 passes through the mounting hole 2 and is fixedly connected to the clamping block 306. A plurality of V-shaped connecting pieces 305 and clamping blocks 306 are arranged in an annular distribution with the center of the circular hole slot 304 as the center. When the V-shaped connecting piece 305 is in an undeformed initial state, the outer diameters of the plurality of clamping blocks 306 are smaller than the inner diameter of the mounting hole 2. When the V-shaped connecting piece 305 is squeezed and deformed, the outer diameters of the plurality of clamping blocks 306 are larger than the inner diameter of the mounting hole 2 and the bottoms of the clamping blocks 306 are attached to the upper surface of the circuit board body 1;

[0041] The squeezing unit 307 is distributed inside the square telescopic slot 303 and penetrates the circular hole slot 304 to the top of the mounting column 301. The squeezing unit 307 that moves up and down is used to squeeze or release the V-shaped connecting piece 305;

[0042] The pressing self-locking unit 308 is distributed at the bottom of the square telescopic slot 303 and is used to provide thrust for the upward movement of the squeezing unit 307;

[0043] The guide grooves 309 are symmetrically arranged on both sides of the inner wall of the square telescopic groove 303, and are used to limit the upward and downward positions of the pressing self-locking unit 308;

[0044] The extrusion unit 307 includes a conical pressure column 3071, a connecting column 3072, and a top block 3073;

[0045] The conical pressure column 3071, the connecting column 3072, and the top block 3073 are fixed in sequence from bottom to top along the vertical direction;

[0046] The conical pressure column 3071 is distributed inside the square expansion slot 303 and the top of the conical pressure column 3071 is in contact with the inner side of the plurality of V-shaped connecting pieces 305. The connecting column 3072 passes through the middle of the plurality of V-shaped connecting pieces 305 and protrudes above the clamping block 306.

[0047] The V-shaped connecting piece 305 is expanded outward by squeezing the V-shaped connecting piece 305 by moving the conical pressing column 3071 upward, and the squeezing of the V-shaped connecting piece 305 is released by moving the conical pressing column 3071 downward, and the V-shaped connecting piece 305 is retracted inward and reset under the action of its own elastic force;

[0048] The push-to-lock unit 308 includes a T-shaped mounting slot 3081, a T-shaped connecting block 3082, a W-shaped spring piece 3083, and a self-locking elastic steel wire 3084;

[0049] The T-shaped mounting groove 3081 is provided at the bottom of the conical pressure column 3071, the T-shaped connecting block 3082 is clamped on the inner side of the T-shaped mounting groove 3081, the W-shaped spring piece 3083 is adhesively fixed to the top of the T-shaped connecting block 3082, and the bottom of the W-shaped spring piece 3083 is attached to the bottom of the inner wall of the square expansion slot 303, and the deformed and contracted W-shaped spring piece 3083 is used to provide an upward thrust for the conical pressure column 3071;

[0050] The self-locking elastic steel wire 3084 is symmetrically fixed on both sides of the T-shaped connecting block 3082 and extends into the guide groove 309;

[0051] The guide groove 309 includes a top transverse groove 3091, a downward inclined groove 3092, a bottom transverse groove 3093, a self-locking groove 3094, an unlocking downward groove 3095, and an upward inclined groove 3096;

[0052] The downward inclined groove 3092 and the upward inclined groove 3096 are distributed at the bottom of both ends of the top transverse groove 3091, the bottom transverse groove 3093 is distributed at the bottom of the downward inclined groove 3092, the self-locking groove 3094 and the unlocking downward groove 3095 are respectively distributed at the top and bottom of one end of the bottom transverse groove 3093 away from the downward inclined groove 3092, and the bottom of the unlocking downward groove 3095 is connected to the bottom of the upward inclined groove 3096;

[0053] The top transverse groove 3091, the downward inclined groove 3092, the bottom transverse groove 3093, the self-locking groove 3094, the unlocking downward groove 3095, and the upward inclined groove 3096 are connected to each other in sequence;

[0054] The self-locking elastic steel wire 3084 moves along the track of the guide groove 309 during the up and down movement, thereby achieving self-locking of the upper and lower positions of the conical pressure column 3071.

[0055] In this embodiment, it is necessary to add that: the device housing to be installed with the circuit board body 1 has a preset threaded hole for fixing the quick-install assembly 2. The steps for installing the circuit board body 1 are as follows:

[0056] First, the quick-install component 2 is threadedly connected to the preset threaded hole inside the device housing through the fixing stud 302, so that the quick-install component 2 can be installed and fixed;

[0057] After the quick-release assembly 2 is fixed, the top block 3073 is pressed, and the extrusion unit 307 moves downward as a whole and squeezes the W-shaped spring sheet 3083 to further deform and shrink. At this time, the end of the self-locking elastic steel wire 3084 moves downward along the trajectory of the downward inclined groove 3092. Since the bottom of the downward inclined groove 3092 deviates from the connecting end of the self-locking elastic steel wire 3084, the end of the self-locking elastic steel wire 3084 is deformed and bent when it moves downward. When the self-locking elastic steel wire 3084 moves to the bottom of the downward inclined groove 3092, the end of the self-locking elastic steel wire 3084 will be reset under the action of its own elastic force, so that the end of the self-locking elastic steel wire 3084 moves along the trajectory of the bottom transverse groove 3093 to the bottom of the self-locking groove 3094;

[0058] After that, the pressing on the top block 3073 is released, and the elastic force of the W-shaped spring sheet 3083 pushes the extrusion unit 307 upward, and the end of the self-locking elastic steel wire 3084 is inserted into the self-locking groove 3094, so that the extrusion unit 307 is limited at a low position. At this time, the extrusion unit 307 releases the extrusion of the V-shaped connecting piece 305, and the multiple V-shaped connecting pieces 305 are in an initial contracted state;

[0059] Then, the circuit board body 1 is transferred to the top of the multiple quick-install components 2, and the mounting holes 2 are aligned with the multiple quick-install components 2. Then, the circuit board body 1 is moved down so that the mounting holes 2 pass through the clamping block 306 and are sleeved on the outer sides of the multiple V-shaped connecting pieces 305.

[0060] Finally, the top block 3073 is pressed again, and its self-locking elastic steel wire 3084 moves to the bottom of the unlocking downward moving groove 3095, and then the top block 3073 is released, and the self-locking elastic steel wire 3084 moves upward along the track of the upward moving inclined groove 3096. During this process, the end of the upward moving inclined groove 3096 bends to the other side. When the self-locking elastic steel wire 3084 moves to the top of the upward moving inclined groove 3096, the end of the self-locking elastic steel wire 3084 moves along the top transverse groove 3091 to the top of the downward moving inclined groove 3092 under the action of its own elastic force;

[0061] The above structure realizes the unlocking of the position of the conical pressure column 3071. The conical pressure column 3071 moves upward under the action of the W-shaped spring piece 3083, and the top of the conical pressure column 3071 squeezes the V-shaped connecting piece 305, so that the multiple V-shaped connecting pieces 305 are deformed and expand outward. While the clamping block 306 expands, it moves slightly downward to fit the top of the circuit board body 1. In this way, the clamping block 306 presses the edge of the mounting hole 2, thereby fixing the circuit board body 1.

[0062] Compared with the traditional fixing method of passing the screws through the mounting holes to be threadedly connected to the mounting posts, it is not only simpler and more convenient to operate, but can also effectively avoid the problem of screws falling off and thus prolonging the installation time, thereby effectively improving the installation efficiency of the circuit board body 1.

[0063] Please refer to Figures 3 to 6 The self-locking elastic steel wire 3084 has good elasticity, and the top of the downward inclined groove 3092 and the bottom of the unlocking downward groove 3095 are symmetrically distributed with the connection end point of the self-locking elastic steel wire 3084 and the T-shaped connecting block 3082 as the center.

[0064] In this embodiment: It should be noted that: the above description structure see Figure 5 ,That Figure 5 The dotted line in is the center line of the connection end point between the self-locking elastic steel wire 3084 and the T-shaped connecting block 3082;

[0065] When the self-locking elastic steel wire 3084 is located at the top of the downward moving inclined groove 3092, the end of the self-locking elastic steel wire 3084 is bent in the direction of the upward moving inclined groove 3096, so that the self-locking elastic steel wire 3084 itself has a restoring force in the direction of the downward moving inclined groove 3092, so that the self-locking elastic steel wire 3084 can move downward along the track of the downward moving inclined groove 3092 when moving downward;

[0066] When the self-locking elastic steel wire 3084 is located at the bottom position of the unlocking downward groove 3095, the end of the self-locking elastic steel wire 3084 is bent in the direction of the downward inclined groove 3092, so that the self-locking elastic steel wire 3084 itself has a reset force in the direction of the upward inclined groove 3096, and then the self-locking elastic steel wire 3084 can move up along the trajectory of the upward inclined groove 3096 when moving upward.

[0067] Please refer to Figures 3-4 , the W-shaped spring piece 3083 is always in a contracted state, and the lateral length of the T-shaped connecting block 3082 is smaller than the lateral length of the T-shaped mounting groove 3081 .

[0068] In this embodiment: through this structure, the W-shaped spring piece 3083 always provides an upward thrust for the conical pressure column 3071, that is, when the conical pressure column 3071 is at the highest position, the conical pressure column 3071 is also subjected to an upward thrust, and this thrust ensures the extrusion stability of the conical pressure column 3071 on the V-shaped connecting piece 305;

[0069] The structure in which the lateral length of the T-shaped connecting block 3082 is smaller than the lateral length of the T-shaped mounting groove 3081 allows the space on both sides of the T-shaped mounting groove 3081 to provide deformation space for the bending of the self-locking elastic steel wire 3084 .

[0070] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circuit board quick-installation structure, comprising a circuit board body (1) and a mounting hole (2) provided inside the circuit board body (1), characterized in that: The circuit board body (1) is connected to the quick-install component (3) through the installation hole (2) to achieve installation and fixation; The quick-install assembly (3) comprises a mounting column (301), a fixing stud (302), a square telescopic slot (303), a round hole slot (304), a V-shaped connecting piece (305), a clamping block (306), a squeezing unit (307), a push-to-lock unit (308) and a guide slot (309); The fixing stud (302) is fixed to the bottom of the mounting column (301), and the mounting column (301) is threadedly connected to a preset position of the device housing through the fixing stud (302); The square expansion slot (303) and the round hole slot (304) are arranged inside the mounting column (301); the round hole slot (304) is located at the top of the square expansion slot (303) and penetrates to the top of the mounting column (301); The bottom of the V-shaped connecting piece (305) is fixed to the top of the inner wall of the square telescopic groove (303); the top of the V-shaped connecting piece (305) extends through the circular hole groove (304) and protrudes above the mounting column (301); the top of the V-shaped connecting piece (305) penetrates the mounting hole (2) and is fixedly connected to the clamping block (306); a plurality of the V-shaped connecting pieces (305) and the clamping blocks (306) are arranged in an annular arrangement with the center of the circular hole groove (304) as the center; when the V-shaped connecting piece (305) is in an undeformed initial state, the outer diameters of the plurality of the clamping blocks (306) are smaller than the inner diameter of the mounting hole (2); when the V-shaped connecting piece (305) is squeezed and deformed, the outer diameters of the plurality of the clamping blocks (306) are larger than the inner diameter of the mounting hole (2) and the bottoms of the clamping blocks (306) are attached to the upper surface of the circuit board body (1); The extrusion unit (307) is distributed inside the square telescopic groove (303) and penetrates the circular hole groove (304) to the top of the mounting column (301). The extrusion unit (307) that moves up and down is used to squeeze or release the V-shaped connecting piece (305); The push-to-lock unit (308) is distributed at the bottom of the square telescopic slot (303) and is used to provide thrust for the upward movement of the squeezing unit (307); The guide grooves (309) are symmetrically arranged on both sides of the inner wall of the square telescopic groove (303) and are used to limit the upward position and the downward position of the pressing self-locking unit (308).

2. A circuit board quick assembly structure according to claim 1, characterized in that: The extrusion unit (307) comprises a conical pressure column (3071), a connecting column (3072), and a top block (3073); The conical pressure column (3071), the connecting column (3072), and the top block (3073) are fixed in sequence from bottom to top along the vertical direction; The conical pressure column (3071) is distributed inside the square telescopic groove (303) and the top of the conical pressure column (3071) is in contact with the inner side of the plurality of V-shaped connecting pieces (305). The connecting column (3072) passes through the middle of the plurality of V-shaped connecting pieces (305) and protrudes above the clamping block (306). The V-shaped connecting piece (305) is expanded outward by squeezing the V-shaped connecting piece (305) by moving the conical pressing column (3071) upward, and the squeezing of the V-shaped connecting piece (305) is released by moving the conical pressing column (3071) downward, and the V-shaped connecting piece (305) is retracted inwardly and reset under the action of its own elastic force.

3. A circuit board quick assembly structure according to claim 2, characterized in that: The push-to-lock unit (308) comprises a T-shaped mounting groove (3081), a T-shaped connecting block (3082), a W-shaped spring sheet (3083), and a self-locking elastic steel wire (3084); The T-shaped mounting groove (3081) is provided at the bottom of the conical pressure column (3071), the T-shaped connecting block (3082) is clamped on the inner side of the T-shaped mounting groove (3081), the W-shaped spring piece (3083) is adhesively fixed to the top of the T-shaped connecting block (3082), and the bottom of the W-shaped spring piece (3083) is attached to the bottom of the inner wall of the square telescopic groove (303), and the deformed and contracted W-shaped spring piece (3083) is used to provide an upward thrust for the conical pressure column (3071); The self-locking elastic steel wire (3084) is symmetrically fixed on both sides of the T-shaped connecting block (3082) and extends into the inside of the guide groove (309).

4. A circuit board quick assembly structure according to claim 3, characterized in that: The guide groove (309) includes a top transverse groove (3091), a downward inclined groove (3092), a bottom transverse groove (3093), a self-locking groove (3094), an unlocking downward groove (3095), and an upward inclined groove (3096); The downward inclined groove (3092) and the upward inclined groove (3096) are distributed at the bottom of both ends of the top transverse groove (3091), the bottom transverse groove (3093) is distributed at the bottom of the downward inclined groove (3092), the self-locking groove (3094) and the unlocking downward groove (3095) are respectively distributed at the top and bottom of one end of the bottom transverse groove (3093) away from the downward inclined groove (3092), and the bottom of the unlocking downward groove (3095) is connected to the bottom of the upward inclined groove (3096); The top transverse groove (3091), the downward inclined groove (3092), the bottom transverse groove (3093), the self-locking groove (3094), the unlocking downward groove (3095), and the upward inclined groove (3096) are connected to each other in sequence; The self-locking elastic steel wire (3084) moves along the track of the guide groove (309) during the up and down movement, thereby achieving self-locking of the upper and lower positions of the conical pressure column (3071).

5. A circuit board quick assembly structure according to claim 4, characterized in that: The self-locking elastic steel wire (3084) has good elasticity, and the top of the downward inclined groove (3092) and the bottom of the unlocking downward groove (3095) are symmetrically distributed with the connection end point of the self-locking elastic steel wire (3084) and the T-shaped connecting block (3082) as the center.

6. A circuit board quick assembly structure according to claim 3, characterized in that: The W-shaped spring sheet (3083) is always in a contracted state, and the transverse length of the T-shaped connecting block (3082) is smaller than the transverse length of the T-shaped mounting groove (3081).

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