Electric shock prevention electric soldering iron
By adding a strong contact projection between the inner tube and the soldering iron in the soldering iron and connecting it with the ground wire, the problem of electric shock during use of the soldering iron is solved, and safety is improved.
Patent Information
- Application Number
- CN202421839605.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Existing soldering irons are likely to cause electric shock to the user during use, especially when replacing the soldering iron head, the safety hazards caused by the exposure of the heating core are prominent.
An inner tube is added outside the heating core and the soldering iron head. A strong contact projection is set between the inner tube and the soldering iron head, and connected to the ground wire through the inner tube to ensure that the current is grounded through the ground wire and prevent leakage.
It effectively prevents the risk of electric shock from users during use and when replacing the soldering iron head, improves the safety of use, is simple in structure and low in cost.
Smart Images
Figure CN223083952U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of soldering irons, in particular to an electric soldering iron with electric shock prevention. Background Art
[0002] The soldering iron is an essential tool for electronic production and electrical appliance maintenance. Its core components are the heating core and the soldering iron tip. The heating core is also called the heating element. When the heating element is powered on, it generates heat, which is conducted to the soldering iron tip. As the temperature rises, the soldering iron tip can reach a high enough temperature to melt the solder, thus realizing the connection between electronic components and the circuit board.
[0003] At present, during the use of soldering irons on the market, the phenomenon often occurs that the current directly reaches the soldering iron tip and the outer tube from the heating core, resulting in electric shock to the user. Especially during the process of replacing the soldering iron tip, the heating core is exposed, so the electric shock problem is more prominent, affecting the safety of the user. Summary of the Invention
[0004] To solve the problems of the prior art, the utility model aims to provide an electric soldering iron with electric shock prevention, which effectively solves the electric shock problem through a simple structural design and ensures the safety of the user.
[0005] To achieve the above object, the electric soldering iron with electric shock prevention proposed by the utility model includes a main body part and a soldering iron head part. The soldering iron head is installed at the front end of the main body part. The soldering iron head includes an outer tube, an inner tube, a heating core, and a soldering iron tip. The soldering iron tip is sleeved on the front part of the heating core. The inner tube is sleeved on the heating core and the soldering iron tip. The front part of the inner tube is provided with a protruding part for enhancing the contact with the soldering iron tip. The rear end of the inner tube is connected to the ground wire. The outer tube is sleeved outside the inner tube.
[0006] In one embodiment, the front end of the inner tube extends beyond the front end of the heating core.
[0007] In one embodiment, the length of the inner tube is greater than the length of the heating core.
[0008] In one embodiment, the inner tube includes a first part and a second part. The diameter of the first part is smaller than that of the second part. The heating core extends from the first part to the second part. The rear part of the soldering iron tip is located in the second part.
[0009] In one embodiment, in the assembled state, the cylindrical outer surface of the rear part of the soldering iron tip is sleeved with the hole surface of the second part. The inner surface of the rear part of the soldering iron tip is sleeved on the cylindrical outer surface of the heating core. The bottom surface of the blind hole of the soldering iron tip is close to or abuts against the head of the heating core.
[0010] In one embodiment, the protruding part includes a plurality of bosses protruding from the inner tube towards the soldering iron tip. The bosses are evenly distributed on the circumference of the second part.
[0011] In one embodiment, the protruding portion is a circular convex ring formed on the inner wall of the second part.
[0012] Beneficial effects:
[0013] By adding an inner tube outside the heating core and the soldering iron head, the soldering iron of the present utility model plays a protective role for the heating core and the soldering iron head. Then, through the strong contact protruding portion between the inner tube and the soldering iron head, the current of the soldering iron head is grounded through the ground wire, thereby effectively preventing the leakage of electricity, avoiding the potential safety hazard of electric shock to the user during the use process and when replacing the soldering iron head, and improving the use safety. In addition, the anti-static structure of the present utility model is simple, easy to implement, and low in cost, and has strong practicability. Description of the drawings
[0014] The present utility model will be further described and illustrated below with reference to the drawings.
[0015] Figure 1 is a three-dimensional schematic diagram of the electric soldering iron with electric shock prevention in the preferred embodiment of the present utility model.
[0016] Figure 2 is Figure 1 an exploded view of the soldering iron head of the electric soldering iron in
[0017] Figure 3 is Figure 1 a cross-sectional view of the soldering iron head of the electric soldering iron in
[0018] Figure 4 is Figure 3 an enlarged view of part A in
[0019] Figure 5 is Figure 1 a cross-sectional view of the soldering iron head of the electric soldering iron in
[0020] Figure 6 is a cross-sectional view of the second embodiment of the soldering iron head.
[0021] Figure 7 is a cross-sectional view of the third embodiment of the soldering iron head.
[0022] Reference numerals:
[0023] 100, electric soldering iron; 1, main body part; 2, soldering iron head; 3, ground wire; 4, locking nut; 10, switch; 11, mounting sleeve; 21, outer tube; 22, inner tube; 23, heating core; 24, soldering iron head; 25, protruding portion; 210, flange; 221, first part; 222, second part; 223, first hole section; 224, second hole section; 240, shoulder; 250, boss; 251, convex ring; 252, groove. Detailed implementation manners
[0024] The technical solution of the present utility model will be described more clearly and completely below in conjunction with the accompanying drawings and through the description of the preferred embodiments of the present utility model.
[0025] As Figure 1 shown in the preferred embodiment, the electric soldering iron 100 for preventing electric shock includes a main body part 1 and a soldering iron head part 2, and the soldering iron head part 2 is installed at the front end of the main body part 1.
[0026] As Figure 2 and Figure 3 shown, the soldering iron head part 2 includes an outer tube 21, an inner tube 22, a heating core 23 and a soldering iron head 24. Among them, the heating core 23 is arranged at the center of the soldering iron head part 2, and its rear end is connected to the circuit in the main body part 1, and whether to supply power to the heating core 23 is controlled by the switch 10 of the main body part 1. The soldering iron head 24 is sleeved on the front part of the heating core 23, so that the heat generated after the heating core 23 is energized can be conducted to the soldering iron head 24.
[0027] The inner tube 22 is sleeved on the heating core 23 and the soldering iron head 24. Specifically, an installation sleeve 11 is arranged inside the front end of the main body part 1, and the rear part of the inner tube 22 is in interference fit with the inner hole of the installation sleeve 11, so as to install the inner tube 22 on the main body part 1.
[0028] Furthermore, the inner tube 22 includes a first part 221 and a second part 222. The diameter of the first part 221 is smaller than that of the second part 222, so the inner tube 22 has the shape of a stepped shaft. Correspondingly, the aperture of the first hole section 223 in the first part 221 is smaller than the aperture of the second hole section 224 in the second part 222. The first hole section 223 cooperates with the heating core 23, and the heating core 23 extends from the first hole section 223 to the second hole section 224. The second hole section 224 cooperates with the soldering iron head 24. In the assembled state, the cylindrical outer surface at the rear part of the soldering iron head 24 is sleeved with the hole surface of the second part 222, that is, with the hole surface of the second hole section 224. The inner surface at the rear part of the soldering iron head 24 is sleeved on the cylindrical outer surface of the heating core 23. The bottom surface of the blind hole in the soldering iron head 24 is close to or abuts against the head of the heating core 23. The rear end of the soldering iron head 24 abuts against the bottom of the second hole section 224, and the bottom of the second hole section 224 plays a limiting role to limit the assembled position of the soldering iron head 24.
[0029] The length of the inner tube 22 is greater than the length of the heating core 23, and the front end of the inner tube 22 extends beyond the front end of the heating core 23. In Figure 2 the first embodiment shown, the front end of the inner tube 22 extends beyond the front end of the heating core 23, and the rear end of the inner tube 22 also extends beyond the rear end of the heating core 23. The advantages of such a design will be described below.
[0030] As Figures 3 to 5As shown in the figure, a protruding portion 25 for enhancing the contact with the soldering iron tip 24 is provided at the front of the inner tube 22. The protruding portion 25 protrudes from the second part 222 of the inner tube 22 towards the soldering iron tip 24, so that the contact between the second part 222 of the inner tube 22 and the soldering iron tip 24 is closer. In Figure 4 In the first embodiment shown, the protruding portion 25 includes two bosses 250 protruding from the inner tube 22 towards the soldering iron tip 24. The two bosses 250 are symmetrically arranged on the inner wall of the second part 222 of the inner tube 22 with respect to the central axis of the inner tube 22. Preferably, the boss 250 can be formed by a stamping process, which is simple to process and low in cost.
[0031] The rear end of the inner tube 22 is connected to the ground wire 3, and the inner tube 22 is a metal tube. Such a design enables the current conducted from the heating core 23 to the soldering iron tip 24 to be conducted to the inner tube 22 through the strongly contacting protruding portion 25, and then grounded through the ground wire 3, thereby preventing electric leakage and effectively avoiding the problem of electric shock to the user during the use of the soldering iron. At the same time, since the front end of the inner tube 22 extends beyond the heating core 23, during the process of replacing the soldering iron tip 24, even if the soldering iron tip 24 is removed, the heating core 23 is always protected by the inner tube 22, avoiding the problem of the user accidentally touching the heating core 23 and getting an electric shock or being scalded. In the present utility model, the inner tube 22 essentially plays the role of an "insulating tube", solving the problem of easy electric shock of the existing soldering iron.
[0032] As Figure 6 In the second embodiment shown, the protruding portion 25 of the inner tube 22 includes 4 bosses 250 evenly distributed on the inner wall of the second part 222. The increase in the number of bosses further strengthens the contact between the inner tube 22 and the soldering iron tip 24, so that the anti-static effect is better. At the same time, since the surface of the boss is arc-shaped, it does not affect the installation of the soldering iron tip 24.
[0033] As Figure 7 In the third embodiment shown, the protruding portion 25 of the inner tube 22 is a circular ring 251 formed on the inner wall of the second part 222. This design enables the entire circumference of the soldering iron tip 24 at a certain position to be in contact with the circular ring 251, thereby further enhancing the contact with the inner tube 22. Since the circular ring 251 is processed by stamping, a groove 252 is formed on the outer circumference of the inner tube 22.
[0034] The outer tube 21 is sleeved outside the inner tube 22. Its front end extends beyond the inner tube 22 and abuts against the shoulder 240 of the soldering iron tip 24. The rear end is provided with a flange 210 for connecting with the locking nut 4. The locking nut 4 is connected to the mounting sleeve 11 in the main body part 1 through a nut, thereby assembling the outer tube 21 to the main body part 1. The outer tube 21 serves as the housing of the soldering iron head 2, playing the role of protecting the inner tube 22 and the soldering iron tip 24.
[0035] The above specific embodiments only describe the preferred embodiments of the present utility model, rather than limiting the protection scope of the present utility model. Without departing from the design concept and spirit scope of the present utility model, various deformations, substitutions and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model according to the text description and drawings provided by the present utility model shall fall within the protection scope of the present utility model. The protection scope of the present utility model is determined by the claims.
Claims
1. An electric soldering iron with electric shock prevention, comprising a main body part and a soldering iron head, wherein the soldering iron head is installed at the front end of the main body part, and is characterized in that, The soldering iron head includes an outer tube, an inner tube, a heating core, and a soldering iron tip. The soldering iron tip is sleeved on the front part of the heating core. The inner tube is sleeved on the heating core and the soldering iron tip. The front part of the inner tube is provided with a protruding part for enhancing contact with the soldering iron tip. The rear end of the inner tube is connected to the ground wire. The outer tube is sleeved outside the inner tube.
2. The soldering iron according to claim 1, characterized in that, The front end of the inner tube extends beyond the front end of the heating core.
3. The soldering iron according to claim 2, characterized in that, The length of the inner tube is greater than the length of the heating core.
4. The soldering iron according to claim 2, wherein, The inner tube includes a first part and a second part. The diameter of the first part is smaller than that of the second part. The heating core extends from the first part to the second part. The rear part of the soldering iron tip is located within the second part.
5. The soldering iron according to claim 4, characterized in that, In the assembled state, the cylindrical outer surface of the rear part of the soldering iron tip is sleeved with the hole surface of the second part. The inner surface of the rear part of the soldering iron tip is sleeved on the cylindrical outer surface of the heating core. The bottom surface of the blind hole of the soldering iron tip is close to or abuts against the head of the heating core.
6. The soldering iron according to claim 5, characterized in that, The protruding part includes a plurality of bosses protruding from the inner tube towards the soldering iron tip. The bosses are evenly distributed on the circumference of the second part.
7. The soldering iron according to claim 5, characterized in that, The protruding part is a ring-shaped convex ring formed on the inner wall of the second part.