Power tube mounting structure

Abstract

The utility model discloses a power tube mounting structure, which comprises a PCB (printed circuit board), a power tube and a protective cover, wherein the power tube is provided with a main body and a vertical pin, and the protective cover is clamped between the main body of the power tube and the PCB and covers the pin of the power tube. According to the power tube installation structure provided by the utility model, the assembly of the pins and the PCB can be realized under the condition that the pins are not bent, so that the connection of the power tube and the PCB is more convenient, the bending error of the pins can be avoided, the stress concentration is avoided, and the failure rate is greatly reduced; the protective cover clamped and fixed between the power tube main body and the PCB is adopted to cover the power tube pins, so that the pins between the power tube main body and the PCB can be prevented from being in an exposed state, the pins in the area are prevented from being accidentally collided, and the normal use of the power tube is further prevented from being influenced due to the fact that the pins are accidentally collided; and the protective cover is convenient to mount and high in practicability.

Description

Technical Field

[0001] The utility model relates to a power tube installation structure. Background Art

[0002] Chinese patent application number 202121382555.9 discloses a power tube mounting structure that can assemble the pins and the PCB board without bending the pins. This makes the connection between the power tube and the PCB board more convenient, avoids pin bending errors, and prevents stress concentration, greatly reducing the failure rate.

[0003] The power tube mounting structure of the patent includes: a PCB board having a driving surface and a socket, a power tube having a body and pins, and a heat sink having a bottom plate and side mounting walls;

[0004] The bottom plate of the radiator is fixed on the driving surface of the PCB (the bottom plate is parallel to the PCB), the side mounting wall of the radiator is perpendicular to the bottom plate, and the outer surface of the side mounting wall is provided with a mounting position, and a mounting gasket is fixed on the mounting position (the mounting gasket is parallel to the side mounting wall);

[0005] The main body of the power tube is fixed on the mounting gasket (the pins of the power tube are parallel to the side mounting wall, and the pins are perpendicular to the bottom plate and the PCB board), and the pins of the power tube are inserted into the sockets of the PCB board and are welded and electrically connected to the PCB board.

[0006] The patented power tube mounting structure secures the main body of the power tube to a side mounting wall perpendicular to the PCB (base plate), allowing the pins of the power tube to be perpendicular to the PCB. This allows for assembly of the pins to the PCB without bending the pins. This makes connection between the power tube and the PCB more convenient, avoids pin bending errors, prevents stress concentration, and significantly reduces the failure rate.

[0007] Although the power tube mounting structure of this patent can achieve the connection between the power tube (pins) and the PCB board without bending the pins; after the connection is completed, the pins located between the power tube body and the PCB board are always in an exposed state. Therefore, the pins in this area may be accidentally hit, which may affect the normal use of the power tube due to the accidental collision of the pins. Summary of the Invention

[0008] To address the deficiencies in the prior art, the present invention provides a power tube mounting structure, comprising: a flat PCB board having an insertion hole and a bottom surface serving as a driving surface; a power tube having a main body and vertical pins; and a heat sink having a flat bottom plate and vertical side mounting walls. The heat sink is disposed below the PCB board, the bottom plate of the heat sink being fixedly attached to the driving surface of the PCB board, the outer surfaces of the side mounting walls of the heat sink being provided with mounting positions, and vertical mounting gaskets being fixedly attached to the mounting positions (the mounting gaskets being parallel to the side mounting walls). The main body of the power tube is fixedly attached to the mounting gaskets, and the pins of the power tube are inserted into the insertion holes of the PCB board and electrically connected to the PCB board by welding. The present invention also includes: a protective cover secured between the main body of the power tube and the PCB board, extending vertically and covering the pins of the power tube. The cross-section of the protective cover (the cross-section perpendicular to the direction in which the protective cover extends) is U-shaped. The upper and lower ends of the protective cover respectively abut against the driving surface of the PCB board and the main body of the power tube. The left and right edges of the protective cover respectively abut against the side mounting walls and the mounting gasket.

[0009] Preferably, the protective cover is a telescopic cover that can be extended vertically; the protective cover includes: an upper section of the cover whose upper end abuts against the driving surface of the PCB board, and a lower section of the cover whose lower end abuts against the power tube body; and the upper end of the lower section of the cover is provided with: a slide groove for inserting the lower end of the upper section of the cover; the lower end of the upper section of the cover is inserted into the slide groove at the upper end of the lower section of the cover, and the upper section of the cover and the lower section of the cover are slidably matched (the upper section of the cover can slide vertically along the slide groove); in the slide groove below the upper section of the cover, there is also provided: an elastic member compressed downward by the upper section of the cover.

[0010] Preferably, the elastic member is a vertical spring.

[0011] Preferably, there are multiple springs, and the multiple springs are arranged side by side.

[0012] Preferably, the elastic member is a vertical rubber column.

[0013] Preferably, there are multiple rubber columns, and the multiple rubber columns are arranged side by side.

[0014] The advantages and beneficial effects of the present invention are as follows: providing a power tube mounting structure that can achieve assembly of the pins and the PCB without bending the pins, thereby facilitating connection between the power tube and the PCB, avoiding pin bending errors, and preventing stress concentration, thereby greatly reducing the failure rate; and using a protective cover fixed between the power tube body and the PCB to cover the power tube pins, thereby preventing the pins located between the power tube body and the PCB from being exposed, preventing the pins in this area from being accidentally impacted, and thus preventing the normal use of the power tube from being affected by the accidental impact of the pins; and the protective cover is easy to install and highly practical.

[0015] This utility model partially improves the power tube mounting structure disclosed in Chinese Patent Application No. 202121382555.9, primarily by adding a protective cover. This utility model does not improve upon other aspects of the patent. For details on other aspects of the power tube mounting structure, please refer to the patent's specification and will not be further elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the utility model;

[0017] Figure 2 It is a front view schematic diagram of the protective cover;

[0018] Figure 3 It is a schematic diagram of the protective cover when viewed from above. DETAILED DESCRIPTION

[0019] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] The technical solutions specifically implemented in this utility model are as follows:

[0021] like Figures 1 to 3 As shown, a power tube mounting structure includes: a flat PCB board 1 with a socket and a bottom surface serving as a driving surface, a power tube 2 with a main body 22 and vertical pins 21, and a heat sink 3 with a flat bottom plate and vertical side mounting walls 32;

[0022] The heat sink 3 is arranged below the PCB board 1. The bottom plate of the heat sink 3 is fixed to the driving surface of the PCB board 1. The outer surface of the side mounting wall 32 of the heat sink 3 is provided with a mounting position, and a vertical mounting gasket 322 is fixed to the mounting position (the mounting gasket 322 is parallel to the side mounting wall 32).

[0023] The main body 22 of the power tube 2 is fixed on the mounting pad 322, and the pins 21 of the power tube 2 are inserted into the sockets of the PCB board 1 and are welded and electrically connected to the PCB board 1;

[0024] The protective cover 5 is fixed between the main body 22 of the power tube 2 and the PCB board 1, extends vertically, and covers the pins 21 of the power tube 2. The cross section of the protective cover 5 (the cross section perpendicular to the extension direction of the protective cover 5) is U-shaped. The upper and lower ends of the protective cover 5 respectively abut against the driving surface of the PCB board 1 and the main body 22 of the power tube 2. The left and right edges 54 and 55 of the protective cover 5 respectively abut against the side mounting wall 32 and the mounting gasket 322.

[0025] The protective cover 5 is a telescopic cover that can be extended vertically. The protective cover 5 includes: an upper cover section 51 whose upper end abuts against the driving surface of the PCB board 1, and a lower cover section 52 whose lower end abuts against the main body 22 of the power tube 2. The upper end of the lower cover section 52 is provided with a slide groove for inserting the lower end of the upper cover section 51. The lower end of the upper cover section 51 is inserted into the slide groove at the upper end of the lower cover section 52, and the upper cover section 51 and the lower cover section 52 are slidably engaged (the upper cover section 51 can slide vertically along the slide groove). An elastic member 53 is also provided in the slide groove below the upper cover section 51, which is compressed downward by the upper cover section 51.

[0026] The elastic member 53 is a vertical spring; there are multiple springs, and the multiple springs are arranged side by side;

[0027] Alternatively, the elastic member 53 is a vertical rubber column; there are multiple rubber columns, and the multiple rubber columns are arranged side by side.

[0028] The power tube mounting structure of the present invention secures the main body 22 of the power tube 2 to a side mounting wall 32 perpendicular to the PCB 1, thereby making the pins 21 of the power tube 2 perpendicular to the PCB 1. This allows the pins 21 to be assembled with the PCB 1 without bending the pins 21. This facilitates connection between the power tube 2 and the PCB 1, avoids bending errors of the pins 21, and prevents stress concentration, significantly reducing the failure rate.

[0029] After the power tube 2 is connected to the PCB board 1, the protective cover 5 fixed between the main body 22 of the power tube 2 and the PCB board 1 is used to cover the pins 21 of the power tube 2. This can prevent the pins 21 between the main body 22 of the power tube 2 and the PCB board 1 from being exposed, and prevent the pins 21 in this area from being accidentally hit, thereby preventing the normal use of the power tube 2 from being affected by the accidental collision of the pins 21.

[0030] When installing the protective cover 5, first press a portion of the upper section 51 of the cover into the slide groove of the lower section 52 of the cover (the elastic member 53 in the slide groove is compressed downward by the upper section 51 of the cover), so that the length of the protective cover 5 (the length of the protective cover 5 in the extension direction) is less than the vertical distance between the main body 22 of the power tube 2 and the PCB board 1, so that it is convenient to place the protective cover 5 between the main body 22 of the power tube 2 and the PCB board 1; when placing the protective cover 5 between the main body 22 of the power tube 2 and the PCB board 1, the protective cover 5 covers the pins 21 of the power tube 2, so that the lower end of the lower section 52 of the cover abuts against the main body 22 of the power tube 2, and the left and right edges 54 and 55 of the protective cover 5 are respectively aligned with the side mounting holes. The wall 32 and the mounting gasket 322 are in abutment against each other; after the protective cover 5 is put in place, the upper section 51 of the cover body is loosened, and the elastic member 53 in the slide groove can push up the upper section 51 of the cover body, so that the upper end of the upper section 51 of the cover body abuts against the bottom surface of the PCB board 1, thereby fixing the protective cover 5 between the main body 22 of the power tube 2 and the PCB board 1; at this time, the protective cover 5 completely covers the pins 21 of the power tube 2 located between the main body 22 of the power tube 2 and the PCB board 1, thereby preventing the pins 21 located between the main body 22 of the power tube 2 and the PCB board 1 from being exposed, preventing the pins 21 in this area from being accidentally hit, and thus preventing the normal use of the power tube 2 from being affected by the accidental collision of the pins 21.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A power tube mounting structure, comprising: A flat PCB board with a socket and a bottom surface serving as a driving surface, a power tube having a main body and vertical pins, and a heat sink having a flat bottom plate and vertical side mounting walls; the bottom plate of the heat sink is fixedly mounted on the driving surface of the PCB board, the outer surfaces of the side mounting walls of the heat sink are provided with mounting positions, and vertical mounting gaskets are fixedly mounted on the mounting positions; the main body of the power tube is fixedly mounted on the mounting gasket, and the pins of the power tube are inserted into the sockets of the PCB board and are welded and electrically connected to the PCB board; the heat sink is characterized in that it also includes: a protective cover that is clamped between the power tube main body and the PCB board, extends vertically, and covers the pins of the power tube; the cross-section of the protective cover is U-shaped; the two ends of the protective cover respectively abut against the driving surface of the PCB board and the main body of the power tube; and the two side edges of the protective cover respectively abut against the side mounting walls and the mounting gasket.

2. The power tube mounting structure according to claim 1, characterized in that: The protective cover is a telescopic cover that can be extended vertically; the protective cover includes: an upper section of the cover whose upper end abuts against the driving surface of the PCB board, and a lower section of the cover whose lower end abuts against the power tube body; and the upper end of the lower section of the cover is provided with: a slide groove for inserting the lower end of the upper section of the cover; the lower end of the upper section of the cover is inserted into the slide groove at the upper end of the lower section of the cover, and the upper section of the cover and the lower section of the cover are slidably matched; in the slide groove below the upper section of the cover, there is also provided: an elastic member compressed downward by the upper section of the cover.

3. The power tube mounting structure according to claim 2, characterized in that: The elastic member is a vertical spring.

4. The power tube mounting structure according to claim 3, characterized in that: There are multiple springs, and the multiple springs are arranged side by side.

5. The power tube mounting structure according to claim 2, characterized in that: The elastic member is a vertical rubber column.

6. The power tube mounting structure according to claim 5, characterized in that: There are multiple rubber columns, and the multiple rubber columns are arranged side by side.

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