A multi-functional gas soldering iron

Abstract

This application relates to a multi-functional gas soldering iron, comprising a body and multiple soldering tips with different head shapes. A mounting cover is provided at the end of the body, and a mounting hole is coaxially arranged on the mounting cover. The tail of each soldering tip is inserted into and threadedly connected to the inner wall of the mounting hole. A gas cylinder, a nozzle assembly, a piezoelectric assembly, and an ignition assembly are disposed inside the body. One end of the ignition assembly extends outside the body, and the other end is used to push the piezoelectric assembly downwards to release an electric spark. When in the depressed state, the ignition assembly is also linked to the gas cylinder valve, keeping the gas cylinder outlet open. This application has the advantages of meeting user needs in different situations, offering diverse functions and convenient assembly, meeting user needs for outdoor use, being compact, portable, and easy to use.

Description

Technical Field

[0001] This application relates to the technical field of soldering irons, and in particular to a multifunctional gas soldering iron. Background Technology

[0002] Soldering irons are currently an essential tool for electronics manufacturing and electrical appliance repair. Their main purpose is to solder components and wires. According to their mechanical structure, they can be divided into internal heating soldering irons and external heating soldering irons. According to their function, they can be divided into non-desoldering soldering irons and desoldering soldering irons. According to their different uses, they can also be divided into high-power soldering irons and low-power soldering irons.

[0003] With industrial development, soldering irons have become increasingly lightweight and portable. One type of soldering iron includes a body and a soldering tip at the end of the body. During operation, the tip is heated to a specified temperature to perform soldering work. However, due to the shape of the soldering tip, this type of soldering iron is typically limited to soldering, resulting in a relatively simple function that cannot meet the needs of users in different situations. Summary of the Invention

[0004] This application provides a multi-functional gas soldering iron, which has various functions and can meet the user's needs in different situations.

[0005] The multifunctional gas soldering iron provided in this application adopts the following technical solution:

[0006] A multi-functional gas soldering iron includes a body and multiple soldering tips with different head shapes. A mounting cover is provided at the end of the body, and a mounting hole is coaxially arranged on the mounting cover. The tail of each soldering tip is inserted into and threadedly connected to the inner wall of the mounting hole. Inside the body are a gas cylinder, a nozzle assembly, a piezoelectric assembly, and an ignition assembly. One end of the ignition assembly extends outside the body, and the other end is used to push the piezoelectric assembly downwards to release an electric spark. When in the depressed state, the ignition assembly also interacts with the gas cylinder valve to keep the gas cylinder outlet open. The gas cylinder outlet is connected to the nozzle assembly via a gas pipe, and the output end of the piezoelectric assembly extends to the nozzle assembly's air outlet side via a lead wire. The nozzle assembly is directly opposite the mounting hole.

[0007] By adopting the above technical solution, users can select the appropriate soldering iron tip to install in the mounting hole of the mounting cover according to different usage needs, thereby meeting the user's usage needs in different situations. It has multiple functions and is easy to assemble. In addition, this application does not require AC power during use. It uses flame heating to heat the soldering iron tip, thereby meeting the user's needs for outdoor use. It is small in size, easy to carry, and easy to use.

[0008] Preferably, the outside of the device body is provided with a storage tube, and the storage tube is provided with a number of storage cavities corresponding to the number of soldering iron tips, and the soldering iron tips are respectively placed in the corresponding storage cavities.

[0009] By adopting the above technical solution, the soldering iron tip is stored in a storage tube, which not only protects the tip but also makes it easier to carry the device and the tip. Compared with the traditional method of using a separate storage box, this method further reduces the space occupied, optimizes the overall structure, and makes the device lighter and more portable.

[0010] Preferably, the storage tube is coaxially rotatably provided with a cap for sealing the openings of each storage cavity, and the cap is coaxially rotatably sleeved on the outside of the body; the cap has a plurality of through holes corresponding to the number of storage cavities, and the through holes correspond one-to-one with the openings of the storage cavities; the cap is provided with a locking element, and the storage tube is provided with a plurality of locking holes for the end of the locking element to be inserted, and the locking holes are arranged sequentially at intervals along the rotation direction of the cap.

[0011] Preferably, a limiting groove is formed at the end of the body away from the mounting cover, and a base plate coaxial with the body is fixed in the limiting groove. The base plate is located on the side of the storage tube away from the mounting cover. A return spring is provided on the base plate and sleeved on the outside of the body. The end of the return spring away from the base plate abuts against the storage tube. The return spring is used to push the storage tube to move away from the base plate. Multiple push rods are provided on the side wall of the base plate facing the storage tube and are respectively inserted into their respective storage cavities. The soldering iron tip is respectively inserted into its respective push rod.

[0012] Preferably, the end of the machine body away from the mounting cover is threaded with a pressure cap, and the pressure cap, after being tightened, is used to press the base plate against the inner side wall of the limiting groove; the bottom of the gas storage cylinder has an inflation port facing the pressure cap, and tightening the pressure cap on the machine body seals the inflation port.

[0013] Preferably, the body is also slidably provided with a safety locking block for holding the ignition assembly in a depressed state, and a first locking groove is formed on the side wall of the ignition assembly facing the safety locking block for the end of the safety locking block to be inserted; when the ignition assembly is held in the depressed state, the first locking groove is directly opposite the safety locking block; the sliding direction of the safety locking block on the body is perpendicular to the depressed path of the ignition assembly.

[0014] Preferably, the ignition assembly is further provided with a second locking groove for the end of the safety lock block to be inserted. When the ignition assembly is in the initial state, the second locking groove is directly opposite the end of the safety lock block.

[0015] Preferably, a linkage frame located outside the machine body is detachably installed on the safety lock block. The length of the linkage frame extends towards the screw cap. A slot facing the machine body is formed at the end of the linkage frame away from the safety lock block. A snap-fit ​​member is provided on the outer side wall of the screw cap facing the linkage frame for engaging with the slot. The snap-fit ​​member is circumferentially spaced around the machine body.

[0016] Preferably, the gas cylinder is rotatably provided with a valve assembly for adjusting the size of the gas outlet of the gas cylinder. The valve assembly includes an adjusting member that extends from the outer wall of the machine body and is rotatably provided on the machine body. The linkage frame is provided with a protective cover facing the adjusting member. The protective cover covers the outside of the adjusting member. A cap for closing one opening of the protective cover is detachably installed on the protective cover.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] It can meet the user's needs in different situations, has multiple functions and is easy to assemble; in addition, this application does not need to be connected to AC power when in use, and uses flame heating to heat the soldering iron tip, thus meeting the user's needs for outdoor use. It is small in size, easy to carry and easy to use.

[0019] It also makes it easier to carry the device and soldering tip. Compared with the traditional method of using a separate storage box to store the soldering tip, it further reduces the space occupied, optimizes the overall structure, and is more lightweight and easier to carry.

[0020] The safety lock not only locks the ignition assembly in the depressed state, keeping the gas cylinder outlet open and allowing the flame from the nozzle assembly to continuously heat the soldering tip, but also locks the ignition assembly in its initial state, preventing accidental activation. The safety lock is connected to the cap via a linkage and locking mechanism, locking the cap in place and preventing it from rotating. This also restricts the storage tube from sliding outside the device, eliminating the risk of the soldering tip falling out during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the overall structure of the fuselage in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the overall structure of the soldering iron tip according to an embodiment of this application;

[0023] Figure 3 yes Figure 1 A schematic diagram highlighting a portion of the internal structure of the fuselage;

[0024] Figure 4 This is a schematic diagram of the overall structure of an embodiment of this application;

[0025] Figure 5 This is a partial exploded view of the structure behind the concealed fuselage in an embodiment of this application;

[0026] Figure 6 This is a partial structural diagram highlighting the safety lock block and the storage tube in an embodiment of this application;

[0027] Figure 7 yes Figure 4 The diagram shows a partial explosion of the structure at the bottom of the pressure cap.

[0028] Explanation of reference numerals in the attached drawings: 1. Body; 10. Gas cylinder; 100. Gas inlet; 11. Nozzle assembly; 12. Piezoelectric assembly; 13. Ignition assembly; 130. First locking groove; 131. Second locking groove; 14. Limiting groove; 15. Gas valve assembly; 150. Adjusting component; 2. Soldering iron tip; 3. Mounting cover; 30. Mounting hole; 4. Storage cylinder; 40. Storage cavity; 41. Locking hole; 5. Screw cap; 50. Through hole; 51. Snap-fit ​​component; 52. Pressure spring; 6. Locking component; 7. Base plate; 70. Return spring; 71. Top rod; 72. Pressure cap; 8. Safety lock block; 9. Linkage frame; 90. Slot; 91. Protective cover; 92. Sealing cap. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] This application discloses a multifunctional gas soldering iron.

[0031] Reference Figure 1 , Figure 2 The multi-functional gas soldering iron includes a body 1 and multiple soldering tips 2 with different head shapes. The head of the body 1 is detachably fitted with a mounting cover 3 made of high-temperature resistant metal. The head of the mounting cover 3 has a coaxial mounting hole 30, and the inner wall of the mounting hole 30 has internal threads. The outer circumference of the tail of the soldering tip 2 has external threads, and the tail of the soldering tip 2 is used to insert into and threadedly connect to the inner wall of the mounting hole 30.

[0032] like Figure 1 , Figure 2 as well as Figure 3As shown, the machine body 1 contains a gas cylinder 10, a nozzle assembly 11, a piezoelectric assembly 12, an ignition assembly 13, and a valve assembly 15 for adjusting the size of the gas outlet of the gas cylinder 10. The gas cylinder 10 is used to store gas. The piezoelectric assembly 12 includes a piezoelectric ceramic igniter installed inside the machine body 1. One end of the ignition assembly 13 extends outside the machine body 1, and the other end of the ignition assembly 13 is located inside the machine body 1. The trigger end of the piezoelectric assembly 12 is located on the downward pressing path of the ignition assembly 13. By pressing down the ignition assembly 13, the trigger end of the piezoelectric assembly 12 will be gradually compressed. When the compression stroke of the piezoelectric assembly 12 reaches the ignition stroke, the output end of the piezoelectric assembly 12 will release an electric spark.

[0033] like Figure 1 , Figure 3 As shown, the ignition assembly 13, in its depressed state, is also linked to the valve located at the outlet of the gas cylinder 10. At this time, the ignition assembly 13 pushes the valve of the gas cylinder 10 upwards, keeping the outlet of the gas cylinder 10 open. The outlet of the gas cylinder 10 is connected to the nozzle assembly 11 via a gas pipe. The output end of the piezoelectric assembly 12 extends to the nozzle port side of the nozzle assembly 11 via a conductive lead. The flame nozzle of the nozzle assembly 11 is directly opposite the mounting hole 30. The nozzle assembly 11 contains a continuously burning caustic soda that can be heated. The valve assembly 15 is rotatably mounted on the valve of the gas cylinder 10. The valve assembly 15 also includes an adjusting component 150 extending from the outer wall of the machine body 1 and rotatably mounted on the machine body 1. By rotating the adjusting component 150, the user can freely adjust the size of the outlet of the gas cylinder 10 by rotating the valve assembly 15, thereby achieving the purpose of adjusting the hardness of the flame.

[0034] During operation, the soldering tip 2, installed in the mounting hole 30, is heated by a flame emitted from the nozzle assembly 11, ensuring smooth heating of the soldering tip 2. After removing the soldering tip 2 from the mounting cover 3, the main body 1 can be used as a blowtorch. The multiple soldering tips 2 can meet the user's needs in different situations, offering diverse functions and easy assembly. Furthermore, this application does not require AC power during use; it employs flame heating to heat the soldering tip 2, thus meeting the needs of outdoor use. It is compact, portable, and easy to use.

[0035] like Figure 4 , Figure 5 As shown, a storage tube 4 is detachably installed on the outside of the main body 1, and the storage tube 4 is coaxially sleeved on the outside of the main body 1. The storage tube 4 is provided with a number of storage cavities 40 corresponding to the number of soldering iron tips 2, and each soldering iron tip 2 is placed in its corresponding storage cavity 40. The storage cavities 40 are evenly spaced around the central axis of the main body 1 in a circumferential manner on the storage tube 4, and the depth of the storage cavities 40 extends along the length direction of the main body 1.

[0036] like Figure 4 , Figure 5 As shown, the storage cylinder 4 has a screw cap 5 that is coaxially rotatable on the side facing the mounting cover 3, used to seal the openings of each storage cavity 40. The screw cap 5 is also coaxially rotatable and fitted onto the outside of the body 1. The screw cap 5 has multiple through holes 50 corresponding to the number of storage cavities 40, with each through hole 50 corresponding to one opening of a storage cavity 40. The inner diameter of each through hole 50 is the same as the inner diameter of the opening of the storage cavity 40. When the through holes 50 on the screw cap 5 are rotated to align with the openings of their respective storage cavities 40, the soldering tip 2 located inside the storage cavity 40 can be easily removed from the through holes 50. When the through holes 50 on the screw cap 5 are rotated between the openings of two adjacent storage cavities 40, the screw cap 5 seals the openings of each storage cavity 40. In this state, the soldering tip 2 cannot fall out of its respective storage cavity 40, thus locking the soldering tip 2 inside its respective storage cavity 40.

[0037] like Figure 4 , Figure 5 As shown, a locking element 6 is provided on the cap 5. The locking element 6 is slidably disposed within the cap 5 along the radial direction of the cap 5. A pressure spring 52 is also provided inside the cap 5 to push the end of the locking element 6 away from the cap 5. The pressure spring 52 extends and retracts along the sliding direction of the locking element 6. One end of the pressure spring 52 abuts against the inner sidewall of the cap 5, and the other end of the pressure spring 52 is connected to the locking element 6. Multiple locking holes 41 are provided on the circumferential outer wall of the storage cylinder 4 for the end of the locking element 6 to pass through. When the end of the locking element 6 is rotated to be directly opposite the locking hole 41, the end of the locking element 6 will be pushed into the locking hole 41 by the pressure spring 52 and pass through the locking hole 41 from the outer wall of the storage cylinder 4.

[0038] like Figure 4 , Figure 5 As shown, the locking holes 41 are arranged in a ring at uniform intervals along the rotation direction of the cap 5, and the locking holes 41 are located on the rotation path of the locking member 6. When the through holes 50 rotate to be directly aligned with the openings of their respective storage cavities 40, the locking member 6 rotates to be directly aligned with one of the locking holes 41. Through the mutual insertion and engagement of the end of the locking member 6 and the locking hole 41, the rotation of the cap 5 on the storage cylinder 4 is restricted. In addition, when the through holes 50 rotate to be between the openings of two adjacent storage cavities 40, the end of the locking member 6 will also rotate to be directly aligned with one of the locking holes 41. Through the mutual insertion and engagement of the two, the rotation of the cap 5 on the storage cylinder 4 is restricted again. When it is necessary to release the lock on the cap 5, simply press the end of the locking member 6 into the cap 5, and the cap 5 can then be rotated smoothly.

[0039] like Figure 6 , Figure 7As shown, a limiting groove 14 is formed at the end of the body 1 away from the mounting cover 3. A base plate 7, coaxial with the body 1, is limited within the limiting groove 14. The base plate 7 is located on the side of the storage cylinder 4 away from the mounting cover 3. A return spring 70, sleeved on the outside of the body 1, is provided on the side of the base plate 7 facing the storage cylinder 4. One end of the return spring 70 is fixedly mounted on the base plate 7, and the other end of the return spring 70 away from the base plate 7 is fixedly mounted on the bottom wall of the storage cylinder 4, with the return spring 70 abutting against the bottom wall of the storage cylinder 4. The return spring 70 is used to push the storage cylinder 4 to move away from the base plate 7.

[0040] like Figure 6 , Figure 7 As shown, a pressure cap 72 is coaxially threaded to the end of the body 1 away from the mounting cover 3. An external thread for threaded connection with the inner wall of the limiting groove 14 is provided on the circumferential outer wall of the limiting groove 14. The pressure cap 72 is located on the side of the base plate 7 opposite to the storage cylinder 4. When the pressure cap 72 is tightened onto the outer wall of the limiting groove 14, the pressure cap 72 will press against the base plate 7, thus fixing the base plate 7 to the inner wall of the limiting groove 14. An inflation port 100 is formed at the bottom of the gas cylinder 10, directly opposite the pressure cap 72. The pressure cap 72, tightened onto the body 1, seals the inflation port 100.

[0041] like Figure 5 , Figure 6 As shown, multiple push rods 71 ​​are fixedly installed on the side wall of the base plate 7 facing the storage cylinder 4, each inserted into its corresponding storage cavity 40. The push rods 71 ​​correspond one-to-one with the storage cavity 40. The tails of each soldering iron tip 2 located in the storage cavity 40 are respectively inserted into their respective push rods 71.

[0042] When it is necessary to retrieve the soldering tip 2 from the storage cavity 40, first rotate the through hole 50 until it is aligned with the opening of each storage cavity 40. Then, lock the cap 5 by interlocking the locking member 6 with the locking hole 41. Next, compress the return spring 70 by moving the storage cylinder 4 closer to the base plate 7. As the storage cylinder 4 moves downward, the soldering tip 2, located in the storage cavity 40, will gradually extend from the top opening of the through hole 50 under the limit of the top rod 71. At this point, the user can more intuitively and conveniently retrieve the required soldering tip 2. After successfully retrieving the soldering tip 2, simply remove the pressure applied to the storage cylinder 4. The storage cylinder 4 will then automatically rise and return to its original position under the elastic force of the return spring 70. Finally, rotate the cap 5 to rotate the through hole 50 between the openings of the two adjacent storage cavities 40, and then lock the cap 5 by the locking member 6. This effectively prevents the soldering tip 2 from detaching from the storage cylinder 4.

[0043] The storage tube 4 makes it easier to carry the main body 1 and the soldering tip 2. Compared with the traditional method of using a separate storage box to store the soldering tip 2, it further reduces the overall space occupied, optimizes the overall structure, and makes it lighter and more convenient to carry.

[0044] like Figure 3 As shown, the fuselage 1 is also provided with a safety locking block 8 for holding the ignition assembly 13 in a depressed state. The safety locking block 8 is slidably disposed on the fuselage 1 radially, with one side of the safety locking block 8 extending into the fuselage 1 and the other side of the safety locking block 8 located outside the fuselage 1. A first locking groove 130 is formed on the side wall of the ignition assembly 13 facing the safety locking block 8 for inserting the end of the safety locking block 8. The sliding direction of the safety locking block 8 on the fuselage 1 is perpendicular to the depressed path of the ignition assembly 13. When the ignition assembly 13 is held in the depressed state, the first locking groove 130 will move to face the safety locking block 8. In this state, by inserting the end of the safety locking block 8 into the first locking groove 130, the gas outlet of the gas cylinder 10 will remain open under the locking of the safety locking block 8, thereby ensuring the continuous flame ejection of the nozzle assembly 11.

[0045] like Figure 3 As shown, the ignition assembly 13 is also provided with a second locking groove 131 for the end of the safety locking block 8 to be inserted. When the ignition assembly 13 is in the initial state, the second locking groove 131 is directly opposite the end of the safety locking block 8, and the second locking groove 131 is located on the sliding path of the safety locking block 8. In this state, by inserting the end of the safety locking block 8 into the second locking groove 131, the downward pressure of the ignition assembly 13 is restricted under the locking of the safety locking block 8, and the ignition assembly 13 is locked. By locking the ignition assembly 13 in the initial state through the safety locking block 8, the ignition assembly 13 can be prevented from being accidentally activated.

[0046] like Figure 3 , Figure 6As shown, a linkage frame 9 located outside the body 1 is detachably mounted on the safety lock block 8. The length of the linkage frame 9 extends towards the lower cover 5. The end of the linkage frame 9 away from the safety lock block 8 forms a slot 90 facing the body 1. Multiple engaging pieces 51 for engaging with the slot 90 are fixedly installed on the top outer wall of the cover 5 facing the linkage frame 9. The engaging pieces 51 are arranged circumferentially and evenly around the body 1, and each engaging piece 51 corresponds to a through hole 50. When the engaging piece 51 rotates with the cover 5 to below the linkage frame 9, the engaging piece 51 is located on the sliding path of the slot 90. When the safety lock block 8 is pushed toward the body 1, the slot 90 will move toward the body 1 along with the linkage frame 9. Finally, the slot 90 will engage with its respective corresponding locking piece 51. Through the engagement of the two, the safety lock block 8 can restrict the rotation of the cap 5. In addition, under the limit of the linkage frame 9, the storage tube 4 can also be restricted from sliding along the length of the body 1.

[0047] like Figure 3 , Figure 6 As shown, the linkage frame 9 is also directly opposite the adjusting component 150. An integrally formed protective cover 91 for covering the adjusting component 150 is formed on the side wall of the linkage frame 9 facing the adjusting component 150. When the safety lock block 8 and the ignition assembly 13 are locked together, the protective cover 91 will fit against the outer wall of the body 1, covering the adjusting component 150 inside the protective cover 91. A detachable cap 92 is installed on the side of the protective cover 91 away from the body 1 to close the opening of the protective cover 91. When the cap 92 closes the opening of the protective cover 91, it provides a relatively sealed space for the adjusting component 150, effectively preventing moisture from entering the body 1 through the adjusting component 150. When it is necessary to rotate and adjust the adjusting component 150, the cap 92 can be removed from the protective cover 91.

[0048] The implementation principle is as follows: Users can select the appropriate soldering iron tip 2 to install in the mounting hole 30 of the mounting cover 3 according to different usage needs, thereby meeting the user's usage needs in different situations. It has multiple functions and is easy to assemble. In addition, this application does not need to be connected to AC power when in use. It uses flame heating to heat the soldering iron tip 2, thereby meeting the user's needs for outdoor use. It is small in size, easy to carry, and easy to use.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-functional gas soldering iron, comprising a body (1) and multiple soldering tips (2) with different head shapes; characterized in that: The end of the body (1) is provided with a mounting cover (3), and the mounting cover (3) is provided with a mounting hole (30) coaxially. The tail of the soldering iron tip (2) is inserted and threaded to the inner wall of the mounting hole (30). The body (1) is provided with a gas cylinder (10), a nozzle assembly (11), a piezoelectric assembly (12) and an ignition assembly (13). One end of the ignition assembly (13) extends to the outside of the body (1), and the other end of the ignition assembly (13) is used to push the piezoelectric assembly (12) downward to release an electric spark. When the ignition assembly (13) is in the downward state, it is also linked with the valve of the gas cylinder (10) and keeps the gas outlet of the gas cylinder (10) open. The gas outlet of the gas cylinder (10) is connected to the nozzle assembly (11) through an air pipe. The output end of the piezoelectric assembly (12) extends to the jet port side of the nozzle assembly (11) through a lead wire. The nozzle assembly (11) is directly opposite the mounting hole (30). The body (1) is provided with a storage tube (4) on the outside. The storage tube (4) is provided with a number of storage cavities (40) corresponding to the number of soldering iron tips (2). The soldering iron tips (2) are placed in the corresponding storage cavities (40). The storage tube (4) is provided with a screw cap (5) that is rotatably mounted on the outside of the body (1) and is used to seal the openings of each storage cavity (40). The screw cap (5) is rotatably mounted on the outside of the body (1). The screw cap (5) has multiple through holes (50) corresponding to the storage cavities (40), and the through holes (50) correspond one-to-one with the openings of the storage cavities (40). The screw cap (5) is provided with a locking element (6), and the storage tube (4) is provided with multiple locking holes (41) for the end of the locking element (6) to be inserted. The locking holes (41) are arranged at intervals along the rotation direction of the screw cap (5). The end of the body (1) away from the mounting cover (3) forms a limiting groove (14), and a base plate (7) coaxial with the body (1) is fixed in the limiting groove (14). The base plate (7) is located on the side of the storage tube (4) away from the mounting cover (3). A return spring (70) is provided on the base plate (7) and sleeved on the outside of the body (1). The end of the return spring (70) away from the base plate (7) abuts against the storage tube (4). The return spring (70) is used to push the storage tube (4) to move away from the base plate (7). Multiple push rods (71) are provided on the side wall of the base plate (7) facing the storage tube (4) and are respectively inserted into their corresponding storage cavities (40). The soldering iron tip (2) is respectively inserted on the push rod (71).

2. The multifunctional gas soldering iron according to claim 1, characterized in that: The end of the body (1) away from the mounting cover (3) is threaded with a pressure cap (72). After being tightened, the pressure cap (72) is used to press the base plate (7) against the inner side wall of the limiting groove (14). The bottom of the gas cylinder (10) has an air inlet (100) facing the pressure cap (72). Tightening the pressure cap (72) on the body (1) will seal the air inlet (100).

3. The multifunctional gas soldering iron according to claim 2, characterized in that: The fuselage (1) is also slidably provided with a safety locking block (8) for holding the ignition assembly (13) in a depressed state. The side wall of the ignition assembly (13) facing the safety locking block (8) has a first locking groove (130) for the end of the safety locking block (8) to be inserted. When the ignition assembly (13) is held in a depressed state, the first locking groove (130) is directly opposite the safety locking block (8). The sliding direction of the safety locking block (8) on the fuselage (1) is perpendicular to the depressed path of the ignition assembly (13).

4. A multifunctional gas soldering iron according to claim 3, characterized in that: The ignition assembly (13) is also provided with a second locking groove (131) for the end of the safety lock block (8) to be inserted. When the ignition assembly (13) is in the initial state, the second locking groove (131) is directly opposite the end of the safety lock block (8).

5. A multifunctional gas soldering iron according to claim 4, characterized in that: The safety lock block (8) is detachably mounted with a linkage frame (9) located outside the body (1). The length of the linkage frame (9) extends towards the screw cap (5). The end of the linkage frame (9) away from the safety lock block (8) forms a slot (90) facing the body (1). The outer wall of the screw cap (5) facing the linkage frame (9) is provided with a snap-fit ​​member (51) for snapping with the slot (90). The snap-fit ​​member (51) is arranged circumferentially around the body (1).

6. A multifunctional gas soldering iron according to claim 5, characterized in that: The gas cylinder (10) is rotatably provided with a valve assembly (15) for adjusting the size of the gas outlet of the gas cylinder (10). The valve assembly (15) includes an adjusting member (150) that extends out from the outer wall of the body (1) and is rotatably provided on the body (1). The linkage frame (9) is provided with a protective cover (91) facing the adjusting member (150). The protective cover (91) covers the outside of the adjusting member (150). A cap (92) for closing one side opening of the protective cover (91) is detachably installed on the protective cover (91).

Images