CN106659043A - An electrical component fastening device and method for fastening an electrical component - Google Patents

Abstract

The invention discloses an electrical component fastening device and a method for fastening the electrical component. The electrical component fastening device includes a support frame and a mounting assembly; Placed on the bottom plate; the installation component includes a positioning block and a fastening block; the positioning block includes a positioning part, and the positioning part is provided with a positioning surface matching the outer edge surface of the electrical component; the fastening block includes a fastening part, and the fastening part includes a The abutting surface of the component and the pressing surface facing away from the electrical component, when fastening the electrical component, the positioning part is located between the electrical component and the through hole wall of the top plate, and the positioning surface is close to the outer edge surface of the electrical component; The part is inserted between the electrical component and the through hole wall of the top plate, and its abutting surface is against the outer edge surface of the electrical component. The positioning part and the fastening part clamp the electrical component and are clamped in the through hole, and then fastened to the on the support frame. The installation structure of the device is simple, the fastening is reliable, and it is suitable for fastening electrical components of different sizes.

Description

An electrical component fastening device and method for fastening an electrical component

technical field

The invention relates to the field of product fastening devices, in particular to the field of electric component fastening devices.

Background technique

With the rapid development of industrial technology, large-scale power electronic equipment is more and more widely used in various industries, and the power level and power density are getting higher and higher. Therefore, the requirements for electrical components are also getting higher and higher, requiring electrical components to be fixed Reliable, compact installation, easy maintenance, and can prevent damage to electrical components due to vibration. The existing fastening devices for electrical components often adopt structural forms such as clamps and screw fastening structures or clamp clamping and fixing structures. The fastening devices for these electrical components are difficult to install and operate, and the installation reliability is insufficient and cannot be applied. Problems such as the fastening of electrical components of different sizes or shapes. Therefore, the fastening device of electrical components focuses on factors such as the reliable installation of electrical components and the effective prevention of vibration under long-term operation, so as to avoid damage to electrical components and their connections, and can be applied to different sizes or shapes. Electrical components are fastened.

Contents of the invention

The purpose of the present invention is to solve the problems in the prior art, to provide a fastening device that can be applied to electrical components of different sizes and shapes, the device can fasten the electrical components reliably, and the electrical components are not easy to loosen during use In addition, it also has the advantages of fast fastening, short operation time and convenient disassembly.

To achieve the above object, the present invention adopts the following technical solutions:

A fastening device for electrical components, including a support frame and a mounting assembly; the support frame is used to place electrical components, and includes a top plate and a bottom plate, the top plate is provided with at least one through hole, and the electrical components pass through the through hole on the top plate and Placed on the bottom plate; at least one set of mounting components is provided on the periphery of each through hole, and each set of mounting components includes a positioning block and a fastening block; the positioning block includes a positioning part, and the positioning part is used for positioning electrical components, The positioning part is provided with a positioning surface matching the outer edge surface of the electrical component; the fastening block includes a fastening part, which is used to cooperate with the positioning part to push against the electrical component, and fasten the electrical component in the through hole of the top plate , the fastening part includes an abutting surface facing the electrical component and a pressing surface facing away from the electrical component, the abutting surface is used to abut against the outer edge surface of the electrical component, and the abutting surface is from top to bottom Inclined to the abutting surface; when the electrical components are placed in place on the support frame, the positioning part of the positioning block is located between the electrical components and the through hole wall of the top plate, and its positioning surface is close to between the positioning block 21 and the fastening block 22, Simple structure and reliable action.

By setting the mounting part 212 on the positioning block 21 and cooperating with the first mounting hole 112 arranged on the outer periphery of the through hole 111 of the top plate 11, it is ensured that the positioning block 21 can be stably fixed on the top plate 11 before the electrical component 3 is installed.

By setting the slot 2112 on the positioning part 211 of the positioning block 21 and the hook 2123 on the connecting column 2122, the positioning block 21 can be firmly clamped on the top plate 11, the structure is simple, the disassembly and assembly are convenient, and the positioning can be ensured at the same time. The block 21 snaps into the reliability of the top plate 11 .

By setting the fixing part 222 on the fastening block 22, and inserting the first buckle 2222 and the second buckle 2223 on it into the second mounting hole 113 on the periphery of the through hole 111 of the top plate 11, the fastening block 22 is clamped on the top plate 11 to limit the fastening block 22 to be detached after being fastened in place. The structure is simple and the clamping is firm.

Put the locking piece 2225 through the locking through hole 2224 to force the free end of the first buckle 2222 and the free end of the second buckle 2223 to separate, so that the fastening block 22 is more firmly fixed on the top plate 11; The locking piece 2225 is taken out from the locking through hole 2224 on the fixing part 222 of the fastening block 22, so that the first buckle 2222 and the second buckle 2223 that are forced to separate by the locking piece 2225 are no longer opened, so that the The first buckle 2222 and the second buckle 2223 are taken out from the locking through hole 2224 to ensure that the fastening block 22 can be easily disassembled.

By setting at least two sets of positioning blocks 21 and fastening blocks 22 on the periphery of each through hole 111, the positioning blocks 21 and the fastening blocks 22 are arranged oppositely in one direction to further ensure that the electrical components 3 are clamped smoothly, thereby avoiding Eccentric clamping, resulting in weak clamping.

The positioning surface 2111 of the positioning block 21 or the abutting surface 2211 of the fastening block 22 is set as a toothed surface, and the root groove direction of the toothed surface is parallel to the top plate 11, so that when the cross section of the electrical component 3 is circular, the electric appliance The component 3 can freely rotate in the circumferential direction on the support frame, which ensures that the electrical component 3 can be adjusted in angle according to the use requirements on the support frame.

The foregoing description describes preferred embodiments of the invention, but it should be understood that the invention is not limited to the above embodiments and should not be viewed as excluding other embodiments. Based on the enlightenment of the present invention, changes made by those skilled in the art in combination with known or prior art and knowledge should also be considered within the protection scope of the present invention.

The outer edge surface of the electrical component; the fastening part of the fastening block is inserted between the electrical component and the hole wall on the other side of the through hole on the top plate, and its abutting surface is against the outer edge surface of the electrical component, and its inclined pressing The surface presses the hole wall, so that the positioning part of the positioning block, the fastening part of the fastening block and the electrical components are clamped by the through hole of the top plate, and then the electrical components are fastened on the support frame.

Further, the positioning block also includes a mounting part, and the outer periphery of the through hole of the top plate is also provided with a first mounting hole matched with the mounting part; the mounting part includes a first connecting block and a connecting column, and the first connecting block and The positioning parts are perpendicular to each other and fixedly integrated. The connecting column is arranged on the lower surface of the first connecting block. The connecting column is inserted in the first installation hole of the top plate. When the connecting column is inserted in place, the positioning of the positioning block The part extends into the through hole of the top plate.

Further, the connecting column is provided with a hook facing away from the positioning surface, and the positioning part of the positioning block is provided with a slot. When the positioning block is connected in place, the hook is located below the bottom surface of the top plate, and the through hole of the top plate The wall of the hole is inserted into the slot to restrict the positioning block from breaking away from the top plate.

Further, the fastening block also includes a fixing part, and a second installation hole matched with the fixing part is provided on the outer periphery of the through hole of the top plate; the fixing part includes a second connecting block, a first buckle and a second buckle, the second connecting block and the fastening part are perpendicular to each other and fixedly integrated, the first buckle and the second buckle are located on the lower surface of the second connecting block and are separated by a certain distance, the first buckle and the second buckle The second buckle extends into the second installation hole and snaps onto the top plate to restrict the fastening block from being released after being fastened in place.

Further, the fixing part of the fastening block also includes a locking through hole and a locking piece, the locking through hole is arranged on the second connecting block and is located between the first buckle and the second buckle, and the locking piece passes through In the locking through hole, the free end of the first buckle is forced to separate from the free end of the second buckle, and then the fastening block is fixedly connected to the top plate.

Further, the positioning block and the fastening block are arranged opposite to each through hole to form a set of mounting components, the positioning block in each set of mounting components is set opposite to the fastening block, and each through hole is provided with at least Two sets of installation components and positioning blocks of all installation components are arranged adjacently.

Further, the positioning surface of the positioning block or the abutting surface of the fastening block is a toothed surface, and the root groove direction of the toothed surface is parallel to the top plate.

Further, a method for fastening electrical components using the electrical component fastening device includes: step 1: insert the positioning part of the positioning block into the through hole of the top plate, and lean against the wall of the through hole; step 2: Put the electrical components in the through hole of the top plate, adjust the position of the electrical components so that the outer edge surface is positioned against the positioning surface of the positioning part; Step 3: Insert the fastening part of the fastening block between the electrical components and The hole wall on the other side of the through hole on the top plate presses the hole wall, so that the electrical components are located between the positioning block and the fastening block and are clamped in the through hole of the top plate, and then the electrical components are fastened on the support frame.

Further, a method for fastening electrical components using the electrical component fastening device includes: Step 1: Insert the connecting column on the mounting part of the positioning block into the first mounting hole of the top plate, and the positioning block The positioning part extends into the through hole of the top plate; Step 2: Push the positioning surface of the positioning part, so that the wall of the through hole of the top plate is inserted into the slot on the positioning part, and the hook on the connecting column snaps into the wall of the first installation hole In this way, the top plate is clamped. At this time, the positioning part of the positioning block is attached to the wall of the through hole; Step 3: Put electrical components in the through hole of the top plate, and adjust the position of the electrical components so that the outer edge surface is close to the positioning part Positioning on the positioning surface; Step 4: Extend the first buckle and the second buckle on the fixing part of the fastening block into the second mounting hole to snap onto the top plate. At this time, the fastening part of the fastening block is inserted into the electrical appliance Press the hole wall between the element and the through hole wall of the top plate; Step 5: Put the locking piece through the locking through hole of the fixing part of the fastening block, forcing the free end of the first buckle and the free end of the second buckle to separate, thereby The fastening block is fixed on the top plate, at this time, the electrical components are located between the positioning block and the fastening block and are clamped in the through hole of the top plate.

Compared with the prior art, the technical solution of the present invention has the beneficial effects of:

(1) This technical solution provides a through hole on the top plate of the support frame, and the size of the through hole is larger than the size of the electrical component. The electrical component is positioned and clamped and fixed by setting a positioning block and a fastening block. When it is installed in place, The positioning block, the fastening block and the electrical components are clamped in the through hole in the form of interference fit, the installation structure is simple, the fastening action is reliable, and it is easy to assemble and disassemble.

(2) According to the different sizes and shapes of electrical components, positioning blocks corresponding to the size and shape of the outer surface of the electrical components can be provided, so as to realize the fastening of electrical components of different sizes and shapes.

(3) The positioning part is provided with a positioning surface that matches the outer edge surface of the electrical component, so that when the electrical component is installed, the outer edge surface of the electrical component is not damaged by the positioning block, and at the same time, it is ensured that the electrical component can be more accurately positioned on the artificial design. fixed position.

(4) The fastening part of the fastening block is provided with a pressing surface inclined from top to bottom to the top abutment surface, that is, the thickness of the fastening part gradually becomes smaller from top to bottom, so that the fastening block is deformed due to its own deformation. The electrical components are forced to be clamped between the positioning block and the fastening block, the structure is simple, and the action is reliable.

(5) By setting the mounting part on the positioning block and cooperating with the first mounting hole provided on the outer periphery of the through hole of the top plate, it is ensured that the positioning block can be stably fixed on the top plate before the electrical components are installed.

(6) By providing a slot on the positioning part of the positioning block and a hook on its connecting column, the positioning block can be firmly clamped on the top plate, the structure is simple, easy to disassemble and assemble, and at the same time it can ensure that the positioning block is clamped on the top plate reliability.

(7) By setting the fixing part on the fastening block, and inserting the first buckle and the second buckle on it into the second mounting hole on the outer periphery of the through hole of the top plate, the fastening block is clamped on the top plate The fastening block is restricted to be released after being fastened in place, the structure is simple, and the clamping connection is firm.

(8) Put the locking piece through the locking through hole to force the free end of the first buckle to separate from the free end of the second buckle, so that the fastening block is more firmly fixed on the top plate; when dismounting, remove the locking piece from the Take it out from the locking through hole on the fixing part of the fastening block, so that the first buckle and the second buckle that are forced to separate by the locking member no longer open, so that the first buckle and the second buckle can be easily removed from the Take it out from the locking through hole to ensure that the fastening block can be easily disassembled.

(9) At least two sets of positioning blocks and fastening blocks are arranged on the periphery of each through hole, and the positioning blocks and fastening blocks are arranged opposite to each other in one direction to further ensure stable clamping of electrical components, thereby avoiding eccentric clamping , resulting in weak clamping.

(10) The positioning surface of the positioning block or the abutting surface of the fastening block is set as a toothed surface, and the root groove direction of the toothed surface is parallel to the top plate, so that when the cross section of the electrical component is circular, the electrical component can Free rotation in the circumferential direction on the support frame ensures that the electrical components on the support frame can be adjusted in angle according to the use requirements.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the invention and constitute a part of the invention. The schematic embodiments of the invention and their descriptions are used to explain the invention and do not constitute improper limitations to the invention. In the attached picture:

Fig. 1 is the schematic diagram of fastening electrical components of the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the positioning block and the fastening block clamping electrical components of the present invention;

Fig. 3 is a structural schematic diagram of fastening electrical components according to an embodiment of the present invention;

Fig. 4 is the schematic diagram of positioning block of the present invention;

Fig. 5 is a schematic diagram of the fastening block of the present invention.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in FIGS. 1 to 5 , in the embodiment of the present invention, the electrical component fastening device includes a support frame 1 and a mounting assembly 2 .

The support frame 1 includes a top plate 11 and a bottom plate 12 for placing electrical components 3, the top plate 11 of the support frame 1 is provided with at least one through hole 111, and the electrical components 3 pass through the through hole 111 on the top plate 11 and are placed on the bottom plate 12 .

The mounting assembly 2 includes a positioning block 21 and a fastening block 22. At least one set of mounting assembly 2 is provided on the periphery of each through hole 111. The positioning block 21 includes a positioning portion 211 and a mounting portion 212. The positioning portion 211 is provided with an electrical component. 3 The positioning surface 2111 matched with the outer edge surface, the positioning surface 2111 of the positioning block 21 is a toothed surface, the root groove direction of the toothed surface is parallel to the top plate 11, the positioning part 211 is also provided with a card slot 2112, and the mounting part 212 includes a second A connection block 2121 and a connection column 2122, the first connection block 2121 and the positioning part 211 are perpendicular to each other and are fixedly integrated, the connection column 2122 is arranged on the lower surface of the first connection block 2121, and the connection column 2122 is provided with a facing away from the positioning surface The hook 2123 of 2111.

The fastening block 22 includes a fastening part 221 and a fixing part 222. The fastening part 221 of the fastening block 22 is used to cooperate with the positioning part 211 to resist the electrical component 3, and fasten the electrical component 3 in the through hole 111 of the top plate 11 The fastening part 221 of the fastening block 22 includes abutting surface 2211 facing the electrical component 3 and a pressing surface 2212 facing away from the electrical component 3, the abutting surface 2211 is used to butt against the outer edge surface of the electrical component 3, fastening The abutting surface 2211 of the block 22 is a tooth-shaped surface, the direction of the root groove of the tooth-shaped surface is parallel to the top plate 11, and the pressing surface 2212 is inclined from top to bottom to the abutment surface 2211, so that the thickness gradually becomes smaller from top to bottom The fastening part 221.

The fixing part 222 of the fastening block 22 includes a second connecting block 2221, a first buckle 2222, a second buckle 2223, a locking through hole 2224 and a locking piece 2225. The second connecting block 2221 and the fastening part 221 are perpendicular to each other and Fixed into one body, the first buckle 2222 and the second buckle 2223 are located on the lower surface of the second connecting block 2221 and arranged at a certain distance apart, and the locking through hole 2224 is arranged on the second connecting block 2221 and is located on the first buckle Between 2222 and the second buckle 2223 , the locking member 2225 is used to pass through the locking through hole 2224 to force the free end of the first buckle 2222 and the free end of the second buckle 2223 to separate.

The outer periphery of the through hole 111 of the top plate 11 is also provided with a first mounting hole 112 matching with the mounting portion 212 of the positioning block 21 and a second mounting hole 113 matching with the fixing portion 222 of the fastening block 22, the positioning block 21 and the fastening block 22 is arranged opposite to the outer periphery of each through hole 111 to form a set of mounting components 2, the positioning block 21 in each set of mounting components 2 is arranged opposite to the fastening block 22, and the outer periphery of each through hole 111 is provided with at least two sets of mounting components 2 And the positioning blocks 21 of all the installation components 2 are arranged adjacently.

Use the electrical component fastening device to fasten the electrical component 3 in the following manner:

Place the support frame 1 horizontally, insert the connecting column 2122 on the mounting part 212 of the positioning block 21 into the first mounting hole 112 of the top plate 11, at this time, the positioning part 211 of the positioning block 21 extends into the through hole 111 of the top plate 11 middle.

Push the positioning surface 2111 of the positioning part 211, so that the hole wall of the through hole 111 of the top plate 11 is inserted into the locking groove 2112 on the positioning part 211 and the hook 2123 on the connecting column 2122 is engaged with the hole wall of the first mounting hole 112 so as to be engaged. Connect to the top plate 11 , restrict the positioning block 21 from the top plate 11 , and at this time, the positioning portion 211 of the positioning block 21 abuts against the hole wall of the through hole 111 .

The electrical component 3 is put into the through hole 111 of the top plate 11 , and the position of the electrical component 3 is adjusted so that its outer edge surface abuts against the positioning surface 2111 of the positioning portion 211 for positioning.

Extend the first buckle 2222 and the second buckle 2223 on the fixing part 222 of the fastening block 22 into the second mounting hole 113 of the top plate 11 to engage the top plate 11 to restrict the fastening block 22 from the top plate 11 after being fixed in place, At this time, the fastening portion 221 of the fastening block 22 is inserted between the electrical component 3 and the wall of the through hole 11 of the top plate 11 and presses the hole wall, and the abutting surface 2211 of the fastening portion 221 abuts against the outer edge of the electrical component 3 On the surface, the inclined pressing surface 2212 presses the wall of the through hole, so that the positioning part 211 of the positioning block 21, the fastening part 221 of the fastening block 22 and the electrical component 3 are clamped in the through hole of the top plate.

The locking piece 2225 is passed through the locking through hole 2224 on the fixing part 222 of the fastening block 22, forcing the free end of the first buckle 2222 and the free end of the second buckle 2223 to separate, thereby fixing the fastening block 22 to the On the top plate 11 , at this time, the electrical component 3 is located between the positioning block 21 and the fastening block 22 and is clamped in the through hole 111 of the top plate 11 , and then the electrical component 3 is fastened on the support frame 1 .

Using the above-mentioned embodiment, a through hole 111 is provided on the top plate 11 of the support frame, and the size of the through hole 11 is larger than the size of the electrical component 3, and the electrical component 3 is positioned and clamped by setting the positioning block 21 and the fastening block 22 Fixed, when installed in place, the positioning block 21, the fastening block 22 and the electrical component 3 are clamped in the form of interference fit in the through hole 11, the installation structure is simple, the fastening action is reliable, and it is easy to assemble and disassemble.

According to the different sizes and shapes of the electrical components 3, positioning blocks 21 corresponding to the size and shape of the outer surface of the electrical components 3 can be provided, so as to realize the fastening of the electrical components 3 of different sizes and shapes.

The positioning part 211 is provided with a positioning surface 2111 that matches the outer edge surface of the electrical component 3, so that when the electrical component 3 is installed, the outer edge surface of the electrical component 3 is not damaged by the positioning block 21, and at the same time, it is ensured that the electrical component 3 can be positioned more accurately. Positioned at an artificially set position.

The fastening portion 221 of the fastening block 22 is provided with a pressing surface 2212 inclined from top to bottom to the abutment surface, that is, the thickness of the fastening portion 221 gradually becomes smaller from top to bottom, so that the fastening block 22 is deformed due to its own deformation. The effect forces the electrical component 3 to be clamped.

Claims (10)

1. A fastening device for electrical components, characterized in that it includes a support frame and a mounting assembly; The support frame is used to place electrical components, including a top plate and a bottom plate, the top plate is provided with at least one through hole, and the electrical components pass through the through hole on the top plate and are placed on the bottom plate; At least one set of mounting components is provided on the periphery of each through hole, and each set of mounting components includes a positioning block and a fastening block; The positioning block includes a positioning part, the positioning part is used for positioning electrical components, and the positioning part is provided with a positioning surface matching the outer edge surface of the electrical component; The fastening block includes a fastening part, and the fastening part is used to cooperate with the positioning part to resist the electrical component, and fasten the electrical component in the through hole of the top plate, and the fastening part includes an abutting surface facing the electrical component and facing away from the pressing surface of the electrical component, the abutting surface is used to abut against the outer edge surface of the electrical component, and the pressing surface is inclined from top to bottom toward the abutting surface; When the electrical components are placed in place on the support frame, the positioning part of the positioning block is located between the electrical components and the through hole wall of the top plate, and its positioning surface is attached to the outer edge surface of the electrical components; the fastening part of the fastening block is inserted It is located between the electrical components and the hole wall on the other side of the through hole on the top plate. Its abutting surface is against the outer edge surface of the electrical components, and its inclined pressing surface presses the hole wall, so that the positioning part of the positioning block and the tightening part of the fastening block The fixed part and the electrical components are clamped by the through holes of the top plate, and then the electrical components are fastened on the supporting frame. 2. A fastening device for electrical components according to claim 1, characterized in that: the positioning block further includes a mounting part, The outer periphery of the through hole of the top plate is also provided with a first installation hole matched with the installation part; The installation part includes a first connection block and a connection column, the first connection block and the positioning part are perpendicular to each other and are fixedly integrated, The connecting column is arranged on the lower surface of the first connecting block, and the connecting column is inserted into the first installation hole of the top plate. When the connecting column is inserted in place, the positioning portion of the positioning block extends into the through hole of the top plate. 3. A fastening device for electrical components as claimed in claim 2, characterized in that: the connecting column is provided with a hook facing away from the positioning surface, the positioning part of the positioning block is provided with a slot, and the positioning block When connected in place, the hook is located under the bottom surface of the top plate, and the hole wall of the through hole of the top plate is inserted into the slot to restrict the positioning block from detaching from the top plate. 4. A fastening device for electrical components according to claim 1, characterized in that: the fastening block further comprises a fixing part, The outer periphery of the through hole of the top plate is also provided with a second mounting hole matched with the fixing part; The fixing part includes a second connecting block, a first buckle and a second buckle, the second connecting block and the fastening part are perpendicular to each other and fixedly integrated, and the first buckle and the second buckle are located at The lower surface of the second connection block is spaced at a certain distance, and the first buckle and the second buckle extend into the second mounting hole to engage the top plate to restrict the fastening block from being released after being fastened in place. 5. A fastening device for electrical components as claimed in claim 4, characterized in that: said fastening block fixing part also includes a locking through hole and a locking piece, said locking through hole is arranged on the second connecting block and located in the middle of the first buckle and the second buckle, the locking member is passed through the locking through hole to force the free end of the first buckle and the free end of the second buckle to separate, and then the fastening block is fixed on the top plate superior. 6. The electrical component fastening device according to any one of claims 1 to 5, characterized in that: the positioning block is arranged opposite to the fastening block on the outer periphery of each through hole to form a group of mounting components, and each of the The positioning blocks in the set of mounting components are arranged opposite to the fastening blocks, at least two sets of mounting components are arranged on the outer periphery of each through hole, and the positioning blocks of all the mounting components are adjacently arranged. 7. A fastening device for electrical components as claimed in claim 6, characterized in that: the positioning surface of the positioning block or the abutting surface of the fastening block is a toothed surface, and the direction of the root groove of the toothed surface is parallel to on the top plate. 8. The electrical component fastening device according to any one of claims 3, characterized in that: the fastening block also includes a fixing part, and the outer periphery of the through hole of the top plate is also provided with a second Mounting holes; The fixing part of the fastening block includes a second connecting block, a first buckle, a second buckle, a locking through hole and a locking member; The fastening parts of the second connecting block and the fastening block are perpendicular to each other and fixedly integrated, the first buckle and the second buckle are located on the lower surface of the second connecting block with a certain distance apart, and the first buckle and the second buckle extend into the second mounting hole to clamp the top plate to restrict the fastening block from being fastened in place; The locking through hole is arranged on the second connecting block and is located between the first buckle and the second buckle, and the fastener is passed through the locking through hole to force the free end of the first buckle and the second buckle The free end is separated, and then the fastening block is fixed on the top plate. 9. A method for fastening electrical components using the electrical component fastening device according to any one of claims 1 to 7, characterized in that it comprises: Step 1: Insert the positioning part of the positioning block into the through hole of the top plate, and lean against the wall of the through hole; Step 2: Put the electrical components in the through hole of the top plate, adjust the position of the electrical components so that the outer edge surface is positioned against the positioning surface of the positioning part; Step 3: Insert the fastening part of the fastening block between the electrical component and the hole wall on the other side of the through hole on the top plate to press the hole wall, so that the electrical component is located between the positioning block and the fastening block and clamped to the through hole on the top plate , and then fasten the electrical components on the support frame. 10. A method for fastening electrical components using the electrical component fastening device as claimed in claim 8, characterized in that it comprises: Step 1: Insert the connecting column on the mounting part of the positioning block into the first mounting hole of the top plate, and the positioning part of the positioning block extends into the through hole of the top plate; Step 2: Push the positioning surface of the positioning part, so that the wall of the top plate through hole is inserted into the slot on the positioning part, and the hook on the connecting column is engaged with the wall of the first installation hole to engage the top plate. At this time, the positioning block The positioning part of the positioning part is attached to the wall of the through hole; Step 3: Put electrical components in the through hole of the top plate, adjust the position of the electrical components, and make the outer edge surface close to the positioning surface of the positioning part for positioning; Step 4: Insert the first buckle and the second buckle on the fixing part of the fastening block into the second installation hole to snap the top plate. At this time, the fastening part of the fastening block is inserted into the through hole between the electrical components and the top plate Compression between hole walls; Step 5: Put the locking piece through the locking through hole of the fixing part of the fastening block, force the free end of the first buckle and the free end of the second buckle to separate, so as to fix the fastening block on the top plate, at this time , the electrical components are located between the positioning block and the fastening block and are clamped in the through hole of the top plate.