Air conveying connector of hot air gun

Abstract

The utility model relates to the field of hot air guns, in particular to an air conveying connector of a hot air gun, which comprises a gun head part with an abutting frame, air nozzles with end parts provided with bottom plates and capable of being provided with various specifications, a clamping cover arranged on the gun head part and capable of effectively and quickly clamping the various air nozzles, and the like. Compared with the prior art, the device has the advantages that the clamping cover capable of clamping and fixing tuyeres with different pipe diameters in a certain range is mainly adopted as a main part of the joint, firstly, the clamping cover can be disassembled and assembled on the hot air gun, the replacement of tuyeres with other special shapes for use is not influenced, and the clamping cover can be used for clamping and fixing the tuyeres with different pipe diameters in a certain range; and secondly, the clamping operation of the internal clamping assembly is very simple and can be completed only by shifting the handle, so that the replacement of the circle center tuyere is greatly provided and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hot air gun, concretely refers to a hot air gun wind inlet joint. BACKGROUND

[0002] The hot air gun is mainly the tool that the hot air that the gun core of heating resistance wire blows is used to weld and take out components, and is often used when the electronic components on the integrated circuit board are processed and maintained.

[0003] The hot air gun blows the hot air to the position of the circuit board processing by installing the different size, different shape of the air nozzle on the joint, the specification air outlet path and the area, better make, and in the process of using once, possibly replace the air nozzle many times, and the air nozzle generally adopts the way of the stud and the lock clamp fastening, and still needs to use the screwdriver and other tools when disassembling, and the air nozzle is generally made of the metal material with poor heat insulation effect such as iron sheet, aluminum plate, under the relatively complex disassembling mode, it is extremely difficult to replace the air nozzle, therefore, a kind of hot air gun wind inlet joint that can conveniently disassemble and assemble the air nozzle of different pipe diameter size is needed. SUMMARY

[0004] I. Technical problems to be solved

[0005] The technical problem to be solved by the utility model is that during the process of using hot air gun to process circuit board, the air nozzle may be replaced many times, which is relatively complicated.

[0006] II. Technical scheme

[0007] To solve the above technical problems, the technical scheme provided by the utility model is as follows: a hot air gun wind inlet joint, including the gun head of hot air gun, the gun head is equipped with the air outlet for discharging hot air.

[0008] The air nozzle for extending the air supply channel is installed on the gun head, and the clamping cover for clamping and fixing the air nozzle with different pipe diameters in a certain size range is installed on the front end of the gun head.

[0009] Further, the gun head is connected with the support frame for supporting and positioning the air nozzle in the blowing port, and the support frame is arranged slightly inward at the end of the air outlet, so as to form a groove for positioning the air nozzle in front of the support frame.

[0010] Further, the air nozzle includes a gas supply pipe and a pad plate, the pad plate is connected to the end of the gas supply pipe and is set to be consistent with the inner diameter of the air outlet, and the air nozzle is positioned and installed on the gun head by embedding the pad plate into the groove formed in front of the support frame in the blowing port.

[0011] Further, the clamping cover comprises a cover shell, the clamping cover is fixed on the front end of the gun head in a sleeving mode through thread connection, clamping or the like by arranging relevant structures, a supporting plate is connected in the cover shell, a plurality of clamping blocks are rotatably connected on one side of the supporting plate, at least three clamping blocks are arranged in the clamping cover, and a driving assembly for driving the clamping blocks to move to clamp or loosen the air nozzle gas conveying pipe part is connected in the clamping cover.

[0012] Further, the driving assembly comprises a supporting column, the supporting column is connected inward at the front end of the cover shell, a driving ring is rotatably connected on the supporting column, the clamping block is arranged in a gourd-shaped plate structure, one end of the clamping block is rotatably connected with one end of the driving ring penetrating through the supporting column, a plurality of clamping plates are connected on one side of the supporting plate, one end of the clamping block away from the supporting column is embedded between adjacent two clamping plates and connected, a clearance hole is arranged on one side of the cover shell, a lever is outward connected on one side of the driving ring, the lever extends to the outside of the cover shell through the clearance hole and is connected with a handle outside the end of the lever, the handle is convenient for hand holding and driving the driving ring to rotate so as to change the position state of the clamping block, the end of the supporting column is rotatably connected with a disc-shaped sliding plate after penetrating through the clamping block, the driving ring is arranged on the sliding plate, and a pressing plate is connected on one side of the clamping plate and abuts and cooperates with the edge of the sliding plate to assist in positioning the sliding plate with the supporting plate.

[0013] III. Beneficial effects

[0014] Compared with the prior art, the device mainly adopts a clamping cover containing a clamping component capable of clamping and fixing different air nozzles with different pipe diameters in a certain range as the main part of the joint, which can be disassembled and assembled on the hot air gun, does not affect the use of other special-shaped air nozzles, and the clamping operation of the clamping component inside is very simple, which can be completed by only rotating the handle, thereby greatly providing and facilitating the replacement of the air nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the appearance structure schematic of the hot air gun air conveying joint after installing the air nozzle Figure 1 .

[0016] Figure 2 is the appearance structure schematic of the hot air gun air conveying joint after installing the air nozzle Figure 2 .

[0017] Figure 3 is the appearance structure schematic of the hot air gun air conveying joint Figure 1 .

[0018] Figure 4 is the appearance structure schematic of the hot air gun air conveying joint Figure 2 .

[0019] Figure 5 is the appearance structure diagram of the air nozzle matched with the air feeding joint of the hot air gun Figure 1 .

[0020] Figure 6 is the appearance structure diagram of the air nozzle matched with the air feeding joint of the hot air gun Figure 2 .

[0021] Figure 7 is Figure 4 the structure diagram of part A.

[0022] As shown in the figure: 1, gun head, 2, air outlet, 3, support frame, 4, cover, 5, support plate, 6, clamping plate, 7, pressing piece, 8, sliding plate, 9, clamping block, 10, support column, 11, drive ring, 12, lever, 13, handle, 14, clearance hole, 15, air nozzle, 16, air pipe, 17, backing plate. DETAILED DESCRIPTION

[0023] The utility model makes further detailed description in combination with the drawings.

[0024] To solve the above technical problem, the technical scheme provided by the utility model is: a hot air gun air feeding joint, in combination with the drawings Figures 1-2 It comprises the gun head 1 of the hot air gun, the gun head 1 is provided with the air outlet 2 of hot air discharge, and the drawings are combined Figures 3-4 The gun head 1 is connected with the support frame 3 for supporting and positioning the air nozzle 15 in the blowing port, the support frame 3 is arranged slightly inward on the end part of the air outlet 2, and then a certain interval is left in front to form a groove for convenient positioning of the air nozzle 15;

[0025] The application is mainly improved in the following, that is, a detachable clamping cover is installed at the end of the hot air gun to adapt to the installation of air nozzles 15 of various pipe diameters, first, the gun head 1 part is slightly reformed, a simple support frame 3 is installed at the position where the air outlet 2 slightly extends into, which can support the air nozzle 15 and does not affect the outward discharge of hot air blown by the hot air gun;

[0026] In combination with the drawings Figures 3-4 The gun head 1 is provided with the air nozzle 15 matched with the air outlet 2 extension air supply channel, the air nozzle 15 comprises an air pipe 16 and a backing plate 17, the backing plate 17 is connected at the end of the air pipe 16 and is set to be consistent with the inner diameter of the air outlet 2 in the outer contour, and the air nozzle 15 is positioned and installed on the gun head 1 by embedding the backing plate 17 into the groove formed in front of the support frame 3 in the blowing port;

[0027] The air nozzle 15 can be provided with many specifications of different pipe diameters, but they are uniformly provided in the style of a gas conveying pipe 16 and a pad plate 17. The gas conveying pipe 16 serves as the main structure of the air nozzle 15 and is the channel for the hot air to extend. By limiting the pipe diameter, the size of the final blowing end of the hot air gun is standardized, and it exists as a part held by the clamping cover. Regardless of the size of the pipe diameter of the gas conveying pipe 16 of the air nozzle 15, the size and shape of the end plate are uniformly set. Its size and shape are consistent with the blowing port and the abutment 3. When installed, it is embedded in the blowing port and in contact with the abutment 3. The part covered on the air outlet 2 blocks the path of hot air discharge in the area other than the gas conveying pipe 16, achieving the effect of changing the diameter of the gas conveying channel.

[0028] Combined with the accompanying drawings Figures 1-4 and the accompanying drawings Figure 7 The front end of the gun head 1 is provided with a clamping cover capable of clamping and fixing different air nozzles 15 with different pipe diameters within a certain size range. The clamping cover includes a cover shell 4. The clamping cover is fixed on the front end of the gun head 1 by setting relevant structures between the cover shell 4 and the gun head 1 in a threaded, clamped or other way. A support plate 5 is connected in the cover shell 4. A plurality of clamping blocks 9 are rotatably connected on one side of the support plate 5. At least three clamping blocks 9 are arranged relatively in the clamping cover. A driving assembly for driving the clamping blocks 9 to move to clamp or loosen the part of the gas conveying pipe 16 of the air nozzle 15 is connected in the clamping cover.

[0029] The driving assembly includes a support column 10 connected inwardly at the front end of the cover shell 4. A driving ring 11 is rotatably connected on the support column 10. The clamping block 9 is provided in the structure of a gourd-shaped plate. One end of the clamping block 9 is rotatably connected with the other end of the driving ring 11 penetrating the support column 10. A plurality of clamping plates 6 are connected on one side of the support plate 5. The other end of the clamping block 9 away from the support column 10 is embedded between the adjacent two clamping plates 6. A clearance hole 14 is provided on one side of the cover shell 4. A lever 12 is connected outwardly on one side of the driving ring 11. The end of the lever 12 penetrates the clearance hole 14 and extends to the outside of the cover shell 4, and a handle 13 is connected outside the cover shell 4 for conveniently holding and driving the driving ring 11 to rotate and change the position state of the clamping block 9. The end of the support column 10 penetrates the clamping block 9 and is rotatably connected with a disc-shaped sliding plate 8. The driving ring 11 is installed on the sliding plate 8. The clamping plate 6 is connected on one side with a pressing piece 7 which is in close contact with the edge of the sliding plate 8 and cooperates with the support plate 5 to assist in positioning the sliding plate 8.

[0030] The main function of the clamping cover with clamping function is to fix and install the air nozzle 15. First, it is installed on the hot air gun by setting threaded structures on the inner wall of the cover shell 4 and the outer side of the end of the gun head 1, or by using clamping or other methods. In the process of replacing the air nozzle 15 in daily use, we can regard it as a joint or part of the joint of the hot air gun.

[0031] Secondly by setting a special clamping assembly in the clamping cover, different types of blow nozzle 15 of different pipe diameter can be effectively fixed and clamped in a certain range. The operating principle of the clamping assembly is as follows: there is a rotating driving ring 11 in the cover 4, three "8" or gourd-shaped clamping blocks 9 are evenly distributed on one side of the driving ring 11, the end of the clamping block 9 is arc structure, the arc disc at one end is installed on one side of the driving ring 11, and the disc part at the other end is embedded in the clamping groove formed between the two clamping plates 6 on the support plate 5 of the cover 4, and the space left between the three clamping blocks 9 is the area through which the blow nozzle 15 passes, the support plate 5 is fixed in the cover 4, after the driving ring 11 rotates in the cover 4 to a certain extent, the end of the clamping block 9 clamped between the clamping plates 6 cannot move left and right, and can only rotate, then the driving ring 11 will pull the other end of the clamping block 9 to rotate around a certain point in the clamping groove and cause tilting, so that the smallest circular area between the three clamping blocks 9 will expand or shrink, when the area shrinks, the side of the clamping block 9 will simultaneously contact the blow nozzle 15 in the area and lock it firmly, achieving clamping and fixing. In order to facilitate and timely replace the blow nozzle 15, the cover 4, the handle 13 and the like can be made of a material with good heat insulation performance, so that the hand contact end will not be too hot due to the continuous use of the hot air gun, and the blow nozzle 15 can be conveniently replaced.

[0032] In the specific implementation, the hot air gun has already been provided with the clamping cover, when it is necessary to replace the blow nozzle 15 of different sizes, the entire connector does not need to be replaced, only the handle 13 beside the clamping cover needs to be manually rotated to remove the blow nozzle 15 originally installed in the hot air gun, then another suitable blow nozzle 15 is taken out, the blow nozzle 15 is inserted into the hot air gun from the gap in the middle of the clamping cover by hand, after the bottom plate of the blow nozzle 15 contacts the abutment 3 in the gun head 1, the handle 13 is rotated in the opposite direction, the clamping block 9 in the clamping cover is used to lock and fix the blow nozzle 15, the blow nozzle 15 fixed on the hot air gun and the air outlet channel of the hot air gun are connected in line, hot air is output from the blow nozzle 15, and the hot air gun can be normally used.

[0033] The above describes the utility model and its implementation mode, which is not restrictive, and the drawings only show one of the implementation modes of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A hot air gun air inlet joint, comprising a gun head (1) of a hot air gun, wherein an air outlet (2) for discharging hot air is arranged on the gun head (1), characterized in that: a nozzle (15) extending a gas supply channel is arranged on the gun head (1) and cooperates with the air outlet (2); and a clamping cover is arranged at the front end of the gun head (1) and can clamp and fix nozzles (15) of different diameters within a certain size range. The gun head (1) is connected with a supporting frame (3) arranged in the air outlet (2) for supporting and positioning the nozzle (15), and the supporting frame (3) is arranged slightly inward at the end of the air outlet (2), so that a certain interval is left in front of the supporting frame (3) to form a groove for positioning the nozzle (15).

2. The air inlet joint of a hot air gun according to claim 1, wherein: The nozzle (15) comprises a gas supply pipe (16) and a backing plate (17), the backing plate (17) is connected to the end of the gas supply pipe (16) and has an outer contour consistent with the inner diameter of the air outlet (2), and the nozzle (15) is positioned and installed on the gun head (1) by embedding the backing plate (17) into the groove formed in front of the supporting frame (3).

3. The air inlet joint of claim 2, wherein: The clamping cover comprises a cover shell (4), the clamping cover is fixed on the front end of the gun head (1) by setting relevant structures between the cover shell (4) and the gun head (1) in a threaded or clamped manner, a supporting plate (5) is connected in the cover shell (4), a plurality of clamping blocks (9) are rotatably connected to one side of the supporting plate (5), at least three clamping blocks (9) are arranged in the clamping cover, and a driving assembly is connected in the clamping cover for driving the clamping blocks (9) to move to clamp or release the gas supply pipe (16) of the nozzle (15).

4. The air inlet joint of claim 3, wherein: The driving assembly comprises a supporting column (10) connected inwardly at the front end of the cover shell (4), a driving ring (11) is rotatably connected to the supporting column (10), the clamping blocks (9) are arranged in the form of a gourd-shaped plate, one end of the clamping blocks (9) is rotatably connected to the other end of the supporting column (10) penetrating the driving ring (11), a plurality of clamping plates (6) are connected to one side of the supporting plate (5), one end of the clamping blocks (9) away from the supporting column (10) is embedded between two adjacent clamping plates (6), a clearance hole (14) is arranged on one side of the cover shell (4), a lever (12) is connected outwardly on one side of the driving ring (11), the end of the lever (12) penetrates the clearance hole (14) and extends to the outside of the cover shell (4), a handle (13) is connected outside the cover shell (4) for conveniently holding and driving the driving ring (11) to rotate and change the position state of the clamping blocks (9), the end of the supporting column (10) penetrates the clamping blocks (9) and rotatably connects a disc-shaped sliding plate (8), the driving ring (11) is arranged on the sliding plate (8), and a pressing piece (7) is connected to one side of the clamping plate (6) and abuts against the edge of the sliding plate (8) to assist in positioning the sliding plate (8) together with the supporting plate (5).

5. The air inlet fitting for a hot air gun according to claim 4, wherein: ​

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