Electric soldering iron with safety protection device

Abstract

The utility model belongs to the technical field of electric soldering irons, and particularly relates to an electric soldering iron with a safety protection device, which comprises a protective shell, a control mainboard is arranged in the protective shell, a heating rod is electrically connected onto the side wall of the control mainboard, a soldering bit is clamped onto the side wall of the heating rod, and a containing cylinder is mounted on the side wall of the protective shell in a threaded manner. A fixing plate is fixedly installed on the side wall of the soldering bit, sliding grooves are formed in the side wall of the containing cylinder, poke rods are slidably installed in the sliding grooves, a turning groove is formed in the end, close to the soldering bit, of the containing cylinder, and the side wall of the soldering bit is sleeved with a contraction spring. According to the utility model, the soldering bit is wrapped by the accommodating cylinder, and then the soldering bit is pushed to move through the elasticity of the contraction spring, so that the poke rod is tightly attached to the inner side wall of the sliding groove or the turning groove, and the position stability of the soldering bit is ensured; the problem that an existing electric soldering iron is not high in safety is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric soldering irons, in particular to an electric soldering iron with a safety protection device. Background Art

[0002] Electric soldering iron is an essential tool for electronic manufacturing and electrical appliance maintenance. Its main purpose is to solder components and wires. According to its mechanical structure, it can be divided into internal heating type electric soldering iron and external heating type electric soldering iron. According to its function, it can be divided into non-desoldering type electric soldering iron and desoldering type electric soldering iron.

[0003] The Chinese patent with publication number CN218016276U discloses an electric soldering iron with a protective mechanism, including a shell, a soldering iron shell and a soldering iron head. The shell is provided with an end cover, the soldering iron head is installed and connected with the soldering iron shell, and the end cover is provided with a power line interface. A movable protective component is provided in the shell, the soldering iron shell is connected with the shell, the movable protective component is movably arranged between the soldering iron shell and the shell and accommodates the soldering iron shell inside, and the movable protective component moves along the axis direction of the shell, and when the movable protective component moves to the lowest part of the shell, the soldering iron head is completely accommodated inside. The utility model is easy to operate, can ensure the safety of the user and others, and can meet various functional requirements during welding, and this structure has good stability, safety and reliability, simple use, does not occupy space, has strong flexibility, high compatibility, and can be applied to various types of electric soldering irons.

[0004] In the above-mentioned prior art solution, the sliding switch is pushed to move along the sliding groove, and the sliding sleeve moves with the sliding switch, and then the sliding switch is slid into the interior of the card slot. When the electric soldering iron is put into the bag, due to the bumps during the movement, the sliding sleeve may drive the sliding switch to move toward the end cover, and then move to the interior of the sliding groove. At this time, the position of the sliding switch is no longer fixed, and it may slide, causing the soldering iron tip to be exposed to the outside, burning a hole in the bag, or scalding the staff, which is not very safe. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes an electric soldering iron with a safety protection device, which retracts the soldering iron tip into the interior of a accommodating tube, wraps the soldering iron tip through the accommodating tube, and then pushes the soldering iron tip to move through the elasticity of a contraction spring, so that the toggle rod is tightly fitted with the inner wall of the sliding groove or the turning groove, thereby ensuring the stable position of the soldering iron tip.

[0006] The technical solution to achieve the purpose of the utility model is: an electric soldering iron with a safety protection device, comprising a protective shell, a power cord is fixedly installed on the side wall of the protective shell, a control mainboard is arranged inside the protective shell, the control mainboard is electrically connected to the power cord, a heating rod is electrically connected to the side wall of the control mainboard, a soldering iron head is clamped on the side wall of the heating rod, a accommodating cylinder is threadedly installed on the side wall of the protective shell, a plurality of fixing plates are fixedly installed on the side wall of the soldering iron head at equal intervals, the fixing plate is slidably installed on the inner side wall of the accommodating cylinder, a sliding groove is provided on the side wall of the accommodating cylinder, a toggle rod is slidably installed inside the sliding groove, the toggle rod is fixedly installed on the side wall of the adjacent fixing plate, a U-shaped turning groove is provided on the end of the accommodating cylinder close to the soldering iron head, a contraction spring is sleeved on the side wall of the soldering iron head, and the two ends of the contraction spring are respectively fixedly connected to the inner side wall of the accommodating cylinder and the side wall of the fixing plate.

[0007] In some embodiments, a cooling motor is fixedly mounted on the inner wall of the protective shell, a plurality of cooling fan blades are fixedly mounted on the output end of the cooling motor, and a ventilation slot aligned with the cooling motor is opened on the side wall of the protective shell.

[0008] In some embodiments, a limit ring is threadedly installed on the inner side wall of the accommodating tube, and a limit block is fixedly installed on the inner side wall of the accommodating tube, and the limit block is aligned with the position of the turning groove.

[0009] In some embodiments, the accommodating tube is communicated with the interior of the protective shell, and the accommodating tube wraps the heating rod and the soldering iron tip therein.

[0010] In some embodiments, a protective net is fixedly mounted on the inner side wall of the protective shell, the protective net is aligned with the side wall of the cooling fan blade, and the turning groove and the sliding groove are connected to each other.

[0011] In some embodiments, two sliding bars are fixedly mounted on the inner side wall of the protective shell, and the control mainboard is slidably mounted on a side wall surface close to the two sliding bars.

[0012] Compared with the prior art, the utility model has the following significant advantages:

[0013] First, the utility model pushes the toggle rod to move along the side wall of the sliding groove to the side away from the protective shell, and then rotates and moves along the side wall of the turning groove, so that the toggle rod is stuck in the inside of the turning groove, and the position of the soldering iron tip is moved, so that the soldering iron tip extends outward, so that the staff can perform welding work. When it needs to be stored, the soldering iron tip can be retracted into the inside of the accommodating tube by reverse operation, and the soldering iron tip is wrapped by the accommodating tube, and then the soldering iron tip is pushed to move by the elasticity of the contraction spring, so that the toggle rod is closely fitted with the inner wall of the sliding groove or the turning groove, thereby ensuring the stable position of the soldering iron tip; and solves the problem of low safety of the existing electric soldering iron.

[0014] Second, the utility model drives the cooling fan blades to rotate through the cooling motor output shaft, so that the cooling fan blades suck external air into the interior of the protective shell through the ventilation slots on the protective shell, and then blow it out through the accommodating tube. When the air flows inside the accommodating tube, it will take away the temperature on the surface of the heating rod and the soldering iron tip, thereby increasing the cooling speed of the heating rod and the soldering iron tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a three-dimensional structural diagram of an electric soldering iron with a safety protection device of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the protective shell of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the accommodating cylinder of the utility model.

[0019] Description of reference numerals:

[0020] 1. Protective shell; 2. Power cord; 3. Control main board; 4. Heating rod; 5. Soldering iron tip; 6. Receiving tube; 7. Sliding groove; 8. Sliding bar; 9. Limiting ring; 10. Fixing plate; 11. Turning groove; 12. Toggle rod; 13. Contraction spring; 14. Limiting block; 15. Cooling motor; 16. Cooling fan blades; 17. Protective net. DETAILED DESCRIPTION

[0021] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides an electric soldering iron with a safety protection device through improvement. The technical solution of the utility model is:

[0023] like Figure 1 - Figure 3As shown, an electric soldering iron with a safety protection device comprises a protective shell 1, a power cord 2 is fixedly installed on the side wall of the protective shell 1, a control mainboard 3 is arranged inside the protective shell 1, the control mainboard 3 is electrically connected to the power cord 2, a heating rod 4 is electrically connected to the side wall of the control mainboard 3, a soldering iron tip 5 is clamped on the side wall of the heating rod 4, a receiving tube 6 is threadedly installed on the side wall of the protective shell 1, the receiving tube 6 is communicated with the inside of the protective shell 1, the receiving tube 6 wraps the heating rod 4 and the soldering iron tip 5 inside, a plurality of fixed plates 10 are fixedly installed equidistantly on the circumference of the side wall of the soldering iron tip 5, the fixed plates 10 are slidably installed on the inner side wall of the receiving tube 6, a sliding groove 7 is provided on the side wall of the receiving tube 6, a toggle rod 12 is slidably installed inside the sliding groove 7, the toggle rod 12 is fixedly installed on the side wall of the adjacent fixed plate 10, a U-shaped turning groove 11 is provided on the end of the receiving tube 6 close to the soldering iron tip 5, and the turning groove 11 and the sliding groove 7 are connected to each other. The movable grooves 7 are interconnected, and a contraction spring 13 is sleeved on the side wall of the soldering iron tip 5. The two ends of the contraction spring 13 are fixedly connected to the inner side wall of the accommodating tube 6 and the side wall of the fixing plate 10 respectively; by pushing the toggle rod 12, the toggle rod 12 is moved along the side wall of the sliding groove 7 to the side away from the protective shell 1, and then rotated and moved along the side wall of the turning groove 11, so that the toggle rod 12 is stuck in the inside of the turning groove 11, and the position of the soldering iron tip 5 is moved, so that the soldering iron tip 5 is extended outward, so that the staff can perform welding work. When it needs to be stored, the soldering iron tip 5 can be retracted into the inside of the accommodating tube 6 by the reverse operation, and the soldering iron tip 5 is wrapped by the accommodating tube 6, and then the soldering iron tip 5 is pushed to move by the elasticity of the contraction spring 13, so that the toggle rod 12 is tightly fitted with the inner side wall of the sliding groove 7 or the turning groove 11, thereby ensuring the stability of the position of the soldering iron tip 5 and avoiding the situation that the temperature of the soldering iron tip 5 is high and the staff is accidentally touched and scalded.

[0024] like Figure 2 and Figure 3 As shown, in one embodiment, in order to further improve the position stability of the soldering iron tip 5, a limit ring 9 is threadedly installed on the inner side wall of the accommodating tube 6; since the fixing plate 10 is slidably installed inside the accommodating tube 6, the limit ring 9 is arranged inside the accommodating tube 6 so that the limit ring 9 can intercept the toggle rod 12. Since the limit ring 9 is threadedly installed inside the accommodating tube 6, the position of the soldering iron tip 5 inside the accommodating tube 6 can be adjusted by rotating the limit ring 9. A limit block 14 is fixedly installed on the inner side wall of the accommodating tube 6, and the limit block 14 is aligned with the position of the turning groove 11; when the toggle rod 12 is stuck in the side of the turning groove 11 away from the protective shell 1, the limit block 14 contacts the side wall of the fixing plate 10, thereby increasing the contact area between the toggle rod 12 and the side wall of the accommodating tube 6, reducing the thrust of the toggle rod 12 from the contraction spring 13, and avoiding excessive thrust of the contraction spring 13, which causes the toggle rod 12 to separate from the fixing plate 10.

[0025] like Figure 2 As shown, in one embodiment, in order to increase the cooling speed of the soldering iron tip 5, a cooling motor 15 is fixedly installed on the inner side wall of the protective shell 1, and a plurality of cooling fan blades 16 are fixedly installed on the output end of the cooling motor 15. A ventilation slot aligned with the cooling motor 15 is opened on the side wall of the protective shell 1; the cooling fan blades 16 are driven to rotate by the output shaft of the cooling motor 15, so that the cooling fan blades 16 suck the external air into the interior of the protective shell 1 through the ventilation slots on the protective shell 1, and then blow it out through the accommodating tube 6. When the air flows inside the accommodating tube 6, the temperature on the surface of the heating rod 4 and the soldering iron tip 5 is taken away, thereby increasing the cooling speed of the heating rod 4 and the soldering iron tip 5. A protective net 17 is fixedly installed on the inner side wall of the protective shell 1, and the protective net 17 is aligned with the side wall of the cooling fan blades 16; the circuit inside the protective shell 1 is intercepted by the protective net 17 to prevent the circuit from being disturbed by the cooling fan blades 16.

[0026] like Figure 2 As shown, in one embodiment, in order to ensure the stable position of the control main board 3, two sliding bars 8 are fixedly installed on the inner wall of the protective shell 1, and the control main board 3 is slidably installed on a side wall surface close to the two sliding bars 8; the position of the control main board 3 is limited by the sliding bar 8 to ensure the stable position of the control main board 3, while also allowing the control main board 3 to slide.

[0027] The specific working method is: by pushing the toggle rod 12, the toggle rod 12 moves along the side wall of the sliding groove 7 to the side away from the protective shell 1, and then rotates and moves along the side wall of the turning groove 11, so that the toggle rod 12 is stuck in the inside of the turning groove 11, and the position of the soldering iron tip 5 is moved, so that the soldering iron tip 5 extends outward, so that the staff can perform welding work. When it needs to be stored, the soldering iron tip 5 can be retracted into the inside of the accommodating tube 6 by the reverse operation, and the soldering iron tip 5 is wrapped by the accommodating tube 6, and then the soldering iron tip 5 is pushed to move by the elasticity of the contraction spring 13. The toggle rod 12 is tightly fitted with the inner wall of the sliding groove 7 or the turning groove 11, thereby ensuring the stable position of the soldering iron tip 5 and avoiding the situation that the soldering iron tip 5 is at a high temperature and the staff is accidentally burned; the cooling fan blades 16 are driven to rotate by the output shaft of the cooling motor 15, so that the cooling fan blades 16 suck the external air into the inside of the protective shell 1 through the ventilation grooves on the protective shell 1, and then blow it out through the accommodating tube 6. When the air flows inside the accommodating tube 6, it will take away the temperature on the surface of the heating rod 4 and the soldering iron tip 5, thereby increasing the cooling speed of the heating rod 4 and the soldering iron tip 5.

[0028] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. An electric soldering iron with a safety protection device, comprising a protective shell (1), a power line (2) fixedly mounted on the side wall of the protective shell (1), a control mainboard (3) disposed inside the protective shell (1), the control mainboard (3) and the power line (2) being electrically connected together, a heating rod (4) being electrically connected to the side wall of the control mainboard (3), a soldering iron head (5) being clamped on the side wall of the heating rod (4), characterized in that: A receiving tube (6) is threadedly mounted on the side wall of the protective shell (1), a plurality of fixed plates (10) are fixedly mounted at equal intervals on the circumference of the side wall of the soldering iron head (5), the fixed plates (10) are slidably mounted on the inner side wall of the receiving tube (6), a sliding groove (7) is provided on the side wall of the receiving tube (6), a toggle rod (12) is slidably mounted inside the sliding groove (7), the toggle rod (12) is fixedly mounted on the side wall of the adjacent fixed plate (10), a U-shaped turning groove (11) is provided on one end of the receiving tube (6) close to the soldering iron head (5), a contraction spring (13) is sleeved on the side wall of the soldering iron head (5), and the two ends of the contraction spring (13) are respectively fixedly connected to the inner side wall of the receiving tube (6) and the side wall of the fixed plate (10).

2. The electric soldering iron with a safety protection device according to claim 1, characterized in that: A cooling motor (15) is fixedly mounted on the inner side wall of the protective shell (1), a plurality of cooling fan blades (16) are fixedly mounted on the output end of the cooling motor (15), and a ventilation slot aligned with the cooling motor (15) is provided on the side wall of the protective shell (1).

3. The electric soldering iron with a safety protection device according to claim 1, characterized in that: A limit ring (9) is threadedly mounted on the inner wall of the accommodating cylinder (6), and a limit block (14) is fixedly mounted on the inner wall of the accommodating cylinder (6), wherein the position of the limit block (14) is aligned with the turning groove (11).

4. The electric soldering iron with a safety protection device according to claim 1, characterized in that: The accommodating tube (6) is in communication with the interior of the protective shell (1), and the accommodating tube (6) encloses the heating rod (4) and the soldering iron head (5).

5. The electric soldering iron with a safety protection device according to claim 2, characterized in that: A protective net (17) is fixedly mounted on the inner side wall of the protective shell (1), the protective net (17) is aligned with the side wall of the cooling fan blade (16), and the turning groove (11) and the sliding groove (7) are interconnected.

6. The electric soldering iron with a safety protection device according to claim 1, characterized in that: Two sliding bars (8) are fixedly mounted on the inner side wall of the protective shell (1), and the control main board (3) is slidably mounted on a side wall surface close to the two sliding bars (8).

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