CN211903291U - Hot air gun - Google Patents
Hot air gun Download PDFInfo
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- CN211903291U CN211903291U CN201922302459.8U CN201922302459U CN211903291U CN 211903291 U CN211903291 U CN 211903291U CN 201922302459 U CN201922302459 U CN 201922302459U CN 211903291 U CN211903291 U CN 211903291U
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- driving motor
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Abstract
The utility model discloses a hot air gun, which comprises a gun body, wherein an air supply device and a heating component are arranged in the gun body, the air supply device comprises a fan and a fan driving motor, the front end of the gun body is provided with an air gun nozzle, a control switch for controlling the air supply device is arranged on the gun body, the air gun nozzle is in a shape of a slender funnel, and the bottom of the funnel is an air outlet of the air gun; the fan driving motor is a bidirectional motor, the control switch consists of a forward air supply switch and a reverse air supply switch, and the forward air supply switch is connected with a forward driving part and a heating component of the fan driving motor; the reverse air supply switch is connected with a reverse driving part of the fan driving motor; a filter screen is arranged between the air gun nozzle and the gun body. The hot air gun can realize more precise area heating operation and is easier to use in narrow space with densely arranged circuit elements; besides meeting the requirements of normal welding operation, the device can also be used for sucking components.
Description
Technical Field
The utility model relates to an electrician's instrument field specifically is a hot-blast rifle of electronic component welding usefulness.
Background
The hot air gun is a tool for welding and picking up elements by utilizing hot air blown out from a gun core of a heating resistance wire, the hot air gun is used from the taking-down or mounting of small elements to large integrated circuits, special requirements are required on the temperature, the air quantity and the like of the hot air gun in different use occasions, the cold joint of the elements can be caused by too low temperature, and the elements or circuit boards can be damaged by too high temperature. Although the heat gun brings convenience, in some special use occasions, the heat gun commonly used in the market at present has great limitations, such as welding a certain pin or pins of an integrated circuit chip, picking off a small packaged device and the like, due to the limitation of the size of a plurality of integrated circuits, the positioning space of the integrated circuit terminal is very narrow, two adjacent terminals are very close, when the conventional heat gun is used for welding the terminal, the current heat gun has limited caliber size, cannot perform fine local heating, has large heating area, and can possibly cause fatal influence on circuits or devices at the periphery of a target area; when a large component is welded, high wind pressure is needed, and local strong wind can be formed by the high wind pressure, so that small components around a target component can be blown away, and the normal welding is influenced; in addition, solder paste or solder wires in the peripheral area of the target device are easy to spread to the peripheral area after being melted, so that the risk of short circuit of a circuit is caused; in addition, the existing heat gun has single function. The main effect of hot-blast rifle is that welding or the takeout of components and parts are carried out through the heating, when welding or takeout components and parts, need assist the fixed of components and parts or remove with the help of third party's instrument, and it is not convenient enough to use.
SUMMERY OF THE UTILITY MODEL
In order to solve the aforementioned problems existing in the prior art, the utility model discloses a hot-air gun has adopted following technical scheme: the utility model provides a hot-blast rifle, includes the stack of a gun, is provided with air feed device and heating element in the stack of a gun, and air feed device includes fan and fan driving motor, and the stack of a gun front end is provided with air gun mouth, is provided with the control switch who is used for controlling air feed device on the stack of a gun, its characterized in that: the air gun nozzle is in a shape of a long and thin funnel, and the bottom of the funnel is an air outlet of the air gun nozzle.
The fan driving motor is a bidirectional motor, the control switch consists of a forward air supply switch and a reverse air supply switch, and the forward air supply switch is connected with a forward driving part and a heating component of the fan driving motor; the reverse air supply switch is connected with a reverse driving part of the fan driving motor.
A filter screen is arranged between the air gun nozzle and the gun body.
The filter screen and the air gun nozzle and the filter screen and the gun body are in threaded rotary connection.
According to the hot air gun adopting the technical scheme, the shape of the air gun nozzle is changed from a conventional cylindrical shape into a slender funnel shape, so that the main body of the air gun nozzle can be made longer, the caliber of an air outlet can be made very small, on one hand, finer area heating operation can be realized, and on the other hand, the hot air gun is easier to use in a narrow space with densely arranged circuit elements; a bidirectional motor is adopted, and a forward air supply heating function is realized through a forward air supply switch, so that the requirements of normal welding operation are met; the reverse air supply switch is used for realizing reverse air extraction of the fan and can be used for absorbing components; a metal filter screen component is added between the air gun nozzle and the air gun body, and the metal filter screen component has the main function of effectively intercepting various foreign matters from entering the air gun body in the working process of the air gun and avoiding the damage of a fan and the like; the air gun nozzle is connected with the filter screen in a threaded rotary mode, the filter screen is connected with the gun body in a threaded rotary mode, the filter screen is not prone to falling off in the heating operation process, the working stability of the air gun is guaranteed, and meanwhile the air gun nozzle is easy to disassemble and replace.
Drawings
FIG. 1 is a schematic structural view of a hot air gun according to the present invention;
FIG. 2 shows the connection relationship between the bi-directional motor, the control switch and the heating element for the fan driving motor of the hot air gun of the present invention;
FIG. 3 is a schematic view of the screw thread rotary connection between the filter screen of the hot air gun and the nozzle and body of the air gun;
fig. 4 is a schematic view of the screw thread rotary connection between the filter screen and the nozzle and body of the air gun of the present invention.
Detailed Description
The hot air gun of the present invention will be further described with reference to the accompanying drawings.
The utility model discloses a hot air gun, including the body of a gun 1, be provided with air supply device 2 and heating element 3 in the body of a gun 1, air supply device 2 includes fan 2-1 and fan driving motor 2-2, the body of a gun 1 front end is provided with air gun mouth 4, is provided with the control switch 5 that is used for controlling air supply device on the body of a gun 1, as shown in figure 1, air gun mouth 4 be long and thin hopper-shaped, the funnel bottom is its air outlet; the main body of the air gun nozzle 4 is longer, the caliber of the air outlet can be very small, the air outlet is small, hot air is conveniently concentrated in a more tiny space range, more precise area heating operation can be realized, and on the other hand, the air gun nozzle is easier to use in a narrow space with densely arranged circuit elements.
As shown in fig. 2, in order to expand the function of the heat gun, a fan driving motor 2-2 used by a conventional heat gun is changed into a bidirectional motor, the control switch 5 consists of a forward air supply switch 5-1 and a reverse air supply switch 5-2, and the forward air supply switch 5-1 is connected with a forward driving part of the fan driving motor 2-2 and a heating component 3; the reverse air supply switch 5-2 is connected with a reverse driving part of the fan driving motor 2-2. When the forward air supply switch 5-1 is closed, the heating component 3 works and heats, the fan driving motor 2-2 drives the fan 2-1 to rotate forward, and hot air is conveyed to the air gun nozzle 4 in the front of the gun body 1, so that the conventional function is realized; when the reverse air supply switch 5-2 is switched on, the circuit where the heating component 3 is located is disconnected, only the reverse driving part of the fan driving motor 2-2 works, the fan 2-1 is driven to rotate reversely, the effect of exhausting air to the inside of the gun body 1 is achieved through the air gun nozzle 4, the function of absorbing tiny components is achieved by means of the air gun nozzle 4, and the auxiliary clamping tool is not needed.
In order to avoid the problems that the normal use of the hot air gun is influenced by the damage of the blades of the fan 2-1, the short circuit of the circuit and the like caused by the fact that tiny foreign matters enter the gun body 1 through the air gun nozzle 4, a filter screen 6 is arranged between the air gun nozzle 4 and the gun body 1, and the filter screen 6 can be made of a high-temperature-resistant metal net.
In order to facilitate the disassembly and the connection, and the air gun nozzle 4 with different calibers is replaced, the utility model discloses a be screw thread swivelling joint between filter screen 6 and the air gun nozzle 4, between filter screen 6 and the gun body 1. As shown in fig. 3, the two end positions of the filter screen 6 can be designed as male threads, and the air gun nozzle 4 and the part of the gun body 1 connected with the air gun nozzle can be designed as female threads; as shown in fig. 4, one end of the filter screen 6 may be designed as a male screw, the other end of the filter screen may be designed as a female screw, a portion of the air gun nozzle 4 connected to the filter screen 6 may be designed as a female screw, a portion of the gun body 1 connected to the filter screen 6 may be designed as a male screw, the male screw of the filter screen 6 and the male screw of the gun body 1 may have the same parameters, and the female screw of the filter screen 6 and the female screw of the air gun nozzle 4 may have the same parameters, so that the normal installation of the air gun nozzle 4 on the gun body 1 may not be affected even if the filter screen 6 is removed.
Claims (4)
1. The utility model provides a hot-blast rifle, includes body of a gun (1), is provided with air supply device (2) and heating element (3) in body of a gun (1), and air supply device (2) include fan (2-1) and fan driving motor (2-2), and body of a gun (1) front end is connected with air gun mouth (4), is provided with control switch (5) that are used for controlling air supply device on body of a gun (1), its characterized in that: the air gun nozzle (4) is in a shape of a long and thin funnel, and the end, far away from the gun body, of the air gun nozzle is the bottom of the funnel.
2. The heat gun of claim 1, wherein: the fan driving motor (2-2) is a bidirectional motor, the control switch (5) consists of a forward air supply switch (5-1) and a reverse air supply switch (5-2), and the forward air supply switch (5-1) is connected with a forward driving part and a heating component (3) of the fan driving motor (2-2); the reverse air supply switch (5-2) is connected with a reverse driving part of the fan driving motor (2-2).
3. A heat gun according to claim 1 or 2, wherein: a filter screen (6) is arranged between the air gun nozzle (4) and the gun body (1).
4. A heat gun according to claim 3, wherein: the filter screen (6) is in threaded rotary connection with the air gun nozzle (4) and the filter screen (6) is in threaded rotary connection with the gun body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302459.8U CN211903291U (en) | 2019-12-17 | 2019-12-17 | Hot air gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922302459.8U CN211903291U (en) | 2019-12-17 | 2019-12-17 | Hot air gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211903291U true CN211903291U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922302459.8U Active CN211903291U (en) | 2019-12-17 | 2019-12-17 | Hot air gun |
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| Country | Link |
|---|---|
| CN (1) | CN211903291U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902651A (en) * | 2021-04-02 | 2021-06-04 | 电信科学技术仪表研究所有限公司 | PCBA board blowing cleaning device and use method thereof |
-
2019
- 2019-12-17 CN CN201922302459.8U patent/CN211903291U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112902651A (en) * | 2021-04-02 | 2021-06-04 | 电信科学技术仪表研究所有限公司 | PCBA board blowing cleaning device and use method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 2201 and 2301, floor 22-23, building 1, No. 1800, middle section of Yizhou Avenue, high tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee after: Chengdu Hua Microelectronics Technology Co.,Ltd. Address before: 22nd floor, G1 building, Tianfu Software Park, No. 1800, middle Yizhou Avenue, high tech Zone, Chengdu, Sichuan 610041 Patentee before: CHENGDU SINO MICROELECTRONICS TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |