Heat gun protection mechanism for repairing automobile metal plate

Abstract

The utility model relates to the technical field of hot air guns, in particular to a hot air gun protection mechanism for repairing an automobile metal plate, which comprises a connecting pipe, the outer side of the connecting pipe is connected with a protection sleeve through a plurality of connecting columns, and a plurality of heat dissipation holes are formed in the protection sleeve; the connecting pipe is composed of a connecting end with the small diameter and an air outlet end with the large diameter, a clamping mechanism is arranged at the position, located at the connecting end, of the protective sleeve, and the air outlet end is connected with an adjusting cap through threads. The clamping mechanism comprises a positioning ring and a rotating ring, the positioning ring and the rotating ring are concentrically arranged, the rotating ring is located on the inner side of the positioning ring and rotationally connected with the positioning ring, a plurality of movable chucks are arranged on the rotating ring, each movable chuck is of a triangular structure, one corner of each movable chuck is rotationally connected with the rotating ring through a first positioning pin, and the other corner of each movable chuck is of a triangular structure. One corner is in rotary connection and sliding connection with the positioning ring through a second positioning pin, and the rest corner is located in the middle of the rotating ring and connected with a positioning wheel.

Description

Technical Field

[0001] This utility model relates to the field of hot air gun technology, specifically to a protective mechanism for a hot air gun used in automotive sheet metal repair. Background Technology

[0002] In the field of automotive sheet metal repair, the hot air gun is a widely used and indispensable tool. When repairing dents in the car body, the metal sheets of the car body deform after an impact. By heating the dented area with a hot air gun, the metal sheets expand and soften due to the heat. Then, by using appropriate tools (such as pry bars, suction cups, etc.) to straighten the dented area, the deformed metal sheets can be more easily restored to their original shape, reducing damage to the metal sheets during the repair process.

[0003] Currently, the protective mechanisms available for hot air guns on the market are often quite simple in design. Most of these mechanisms consist of only a thin protective shell, and the connection between the shell and the hot air gun body is also relatively basic, usually just a simple sleeve or snap-fit ​​connection. This means that the protective shell can only be used with a single type of hot air gun, resulting in poor applicability. At the same time, since the protective shell is directly exposed to the outside, although it has good heat dissipation, the high external temperature can still cause burns to the human body upon contact, making the protection ineffective. Utility Model Content

[0004] The technical problem this invention aims to solve is that the existing connection method between the protective shell and the main body of the hot air gun can only be applied to a single hot air gun, resulting in poor applicability. At the same time, the high external temperature can still cause burns to the human body when touched, making the protective effect poor.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is a protective mechanism for a hot air gun for automotive sheet metal repair, including a connecting pipe, a protective sleeve connected to the outside of the connecting pipe through multiple connecting posts, and multiple heat dissipation holes provided on the protective sleeve.

[0006] The connecting pipe consists of a connecting end with a smaller diameter and an air outlet end with a larger diameter. The protective sleeve is provided with a clamping mechanism at the connecting end, and the air outlet end is connected with an adjusting cap by a thread.

[0007] The clamping mechanism includes a positioning ring and a rotating ring, wherein the positioning ring and the rotating ring are concentrically arranged, and the rotating ring is located inside the positioning ring and is rotatably connected to the positioning ring. The rotating ring is provided with multiple movable clamps, and the movable clamps are generally triangular in structure. One corner is rotatably connected to the rotating ring through a first positioning pin, another corner is rotatably connected to the positioning ring through a second positioning pin and is slidably connected, and the remaining corner is located in the middle of the rotating ring and is connected to a positioning wheel.

[0008] As a preferred embodiment of this utility model, the protective sleeve is equidistantly positioned on the outside of the connecting pipe, and the length of the protective sleeve near the air outlet is greater than the combined length of the connecting pipe and the adjusting cap.

[0009] As a preferred embodiment of this utility model, the multiple heat dissipation holes on the protective sleeve are located on one side of the protective sleeve at the air outlet end, and the multiple heat dissipation holes are evenly arranged on the protective sleeve.

[0010] As a preferred technical solution of this utility model, the inner diameter of the bottom of the adjusting cap matches the outer diameter of the air outlet end of the connecting pipe, and is connected by a thread. The end of the adjusting cap away from the connecting pipe is one of a circle, a straight line, or a mesh type.

[0011] As a preferred technical solution of this utility model, the outer side of the positioning ring and the protective sleeve are integral structures, and both the positioning ring and the rotating ring are located on the outer side of the connecting pipe. A movable opening is provided on the upper side of the positioning ring, and an adjustment plate is provided on the rotating ring at the movable opening. One side of the adjustment plate is fixedly connected to the positioning ring by a fixing bolt. At the same time, a guide groove corresponding to the movable opening is provided on the positioning ring at the fixing bolt.

[0012] As a preferred embodiment of this utility model, the number of movable clamps is three, and the three movable clamps are arranged at equal angles. The inner sides of the positioning ring and the rotating ring are provided with storage grooves corresponding to the movable clamps. The connecting pipe is located at the movable clamp and has a partition for the movement of the movable clamps.

[0013] As a preferred technical solution of this utility model, the positioning ring at the connection of the second positioning pin has a straight groove structure, so that the second positioning pin slides and rotates to a certain extent in the straight groove during the rotation of the movable clamp with the rotating ring.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] 1. The protective sleeve on the outside of the connecting tube of this hot air gun protective mechanism is connected to the protective sleeve through multiple connecting posts, forming a double-layer protective structure. The presence of the protective sleeve can effectively prevent the operator from touching the high-temperature part of the hot air gun. Compared with the existing directly exposed protective shell, it greatly reduces the risk of burns, significantly improves the protective effect, and provides a safer working environment for the operator.

[0016] 2. This hot air gun protective mechanism features a clamping mechanism at the connection end of the connecting pipe. By rotating the rotating ring, the position of the movable clamp can be flexibly adjusted, allowing for tight clamping of hot air gun bodies of different specifications. This not only enhances the stability of the connection and prevents the protective mechanism from loosening or falling off during use, but also expands the applicability of the protective mechanism, making it compatible with various hot air guns and improving the product's versatility and practicality. Attached Figure Description

[0017] Figure 1 This is a front-end structural diagram of a protective mechanism for a hot air gun used in automotive sheet metal repair according to this utility model.

[0018] Figure 2 This is a rear structural diagram of a protective mechanism for a hot air gun used in automotive sheet metal repair according to this utility model.

[0019] Figure 3 This is a cross-sectional three-dimensional structural diagram of a protective mechanism for a hot air gun used in automotive sheet metal repair according to this utility model.

[0020] Figure 4 This is a three-dimensional cross-sectional view of the clamping mechanism of a protective mechanism for a hot air gun used in automotive sheet metal repair according to this utility model.

[0021] Figure 5 This is an enlarged view of section A of the protective mechanism for a hot air gun used in automotive sheet metal repair according to this utility model.

[0022] As shown in the figure:

[0023] 1. Connecting pipe; 2. Connecting column; 3. Protective sleeve; 4. Multiple heat dissipation holes; 5. Connecting end; 6. Air outlet end; 7. Clamping mechanism; 8. Adjusting cap; 9. Positioning ring; 10. Rotating ring; 11. Movable chuck; 12. First positioning pin; 13. Second positioning pin; 14. Positioning wheel; 15. Movable opening; 16. Adjusting plate; 17. Fixing bolt; 18. Guide groove; 19. Storage groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] As per the instruction manual Figure 1-3 As shown, a protective mechanism for a hot air gun used in automotive sheet metal repair includes a connecting pipe 1. A protective sleeve 3 is connected to the outside of the connecting pipe 1 through multiple connecting posts 2. The protective sleeve 3 is equidistantly arranged on the outside of the connecting pipe 1. A plurality of heat dissipation holes 4 are provided on the protective sleeve 3. The plurality of heat dissipation holes 4 on the protective sleeve 3 are located on one side of the protective sleeve 3 at the air outlet 6, and the plurality of heat dissipation holes 4 are evenly arranged on the protective sleeve 3.

[0028] In this utility model, the connecting pipe 1 consists of a connecting end 5 with a smaller diameter and an air outlet end 6 with a larger diameter. The protective sleeve 3 is provided with a clamping mechanism 7 at the connecting end 5, and the air outlet end 6 is connected to an adjusting cap 8 by a thread. The length of the protective sleeve 3 near the air outlet end 6 is greater than the combined length of the connecting pipe 1 and the adjusting cap 8. The inner diameter of the bottom of the adjusting cap 8 matches the outer diameter of the air outlet end 6 of the connecting pipe 1 and is connected by a thread. The end of the adjusting cap 8 away from the connecting pipe 1 is one of a circular, straight, or mesh type.

[0029] As per the instruction manual Figure 4 As shown, the clamping mechanism 7 includes a positioning ring 9 and a rotating ring 10, wherein the positioning ring 9 and the rotating ring 10 are concentrically arranged, and the rotating ring 10 is located inside the positioning ring 9 and is rotatably connected to the positioning ring 9. The outer side of the positioning ring 9 is integrally formed with the protective sleeve 3, and both the positioning ring 9 and the rotating ring 10 are located outside the connecting pipe 1. The rotating ring 10 is provided with multiple movable clamps 11. The movable clamps 11 are triangular in structure. One corner is rotatably connected to the rotating ring 10 through the first positioning pin 12, and another corner is rotatably connected to the positioning ring 9 through the second positioning pin 13 while being slidably connected. The remaining corner is located in the middle of the rotating ring 10 and is connected to a positioning wheel 14. There are three movable clamps 11, and the three movable clamps 11 are arranged at equal angles. The inner side of the positioning ring 9 and the rotating ring 10 is provided with a storage groove 19 corresponding to the movable clamps 11. There is a partition for the movement of the movable clamps 11 at the location of the connecting pipe 1.

[0030] As per the instruction manual Figure 5As shown, a movable opening 15 is provided on one side of the upper part of the positioning ring 9. An adjusting plate 16 is provided at the movable opening 15 of the rotating ring 10. One side of the adjusting plate 16 is fixedly connected to the positioning ring 9 by a fixing bolt 17. At the same time, the positioning ring 9 is provided with a guide groove 18 corresponding to the movable opening 15 at the fixing bolt 17. The connection between the positioning ring 9 and the second positioning pin 13 is a straight groove structure, so that the second positioning pin 13 slides and rotates to a certain extent at the straight groove during the rotation of the movable clamp 11 with the rotating ring 10.

[0031] In a specific implementation of this utility model, the air outlet of the hot air gun is inserted into the connecting end 5 of the connecting pipe 1. By turning the adjusting plate 16 at the movable port 15, the rotating ring 10 is rotated. The rotating ring 10 drives the movable clamp 11 to rotate. Due to the triangular structure of the movable clamp 11 and its connection with the positioning ring 9 and the rotating ring 10, during the rotation of the three movable clamps 11, one corner with the positioning wheel 14 will move synchronously towards the center of the connecting pipe 1, thereby tightly clamping the air outlet of the hot air gun. Then, by tightening the fixing bolt 17 and the interference fit with one side of the adjusting plate 16, a firm connection is achieved.

[0032] When using a hot air gun for sheet metal repair, depending on the different repair scenarios and needs, rotate the adjusting cap 8 to change the opening direction and form of the end of the adjusting cap 8 away from the connecting pipe 1, thereby adjusting the air outlet mode and airflow direction of the hot air to achieve the best repair effect.

[0033] During the operation of the hot air gun, the heat generated is transferred to the protective sleeve 3 through the connecting pipe 1. The heat dissipation holes 4 evenly arranged on one side of the air outlet 6 on the protective sleeve 3 can dissipate the heat to the surrounding environment in a timely manner, reduce the temperature of the protective sleeve 3 and the connecting pipe 1, and prevent burns caused by direct contact with the connecting pipe 1.

[0034] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A protective mechanism for a hot air gun used in automotive sheet metal repair, comprising a connecting pipe (1), characterized in that: The outer side of the connecting pipe (1) is connected to a protective sleeve (3) by multiple connecting posts (2), and the protective sleeve (3) is provided with multiple heat dissipation holes (4); The connecting pipe (1) consists of a connecting end (5) with a smaller diameter and an air outlet end (6) with a larger diameter. The protective sleeve (3) is provided with a clamping mechanism (7) at the connecting end (5), and the air outlet end (6) is connected to an adjusting cap (8) by a thread. The clamping mechanism (7) includes a positioning ring (9) and a rotating ring (10), wherein the positioning ring (9) and the rotating ring (10) are concentrically arranged, and the rotating ring (10) is located inside the positioning ring (9) and is rotatably connected to the positioning ring (9). The rotating ring (10) is provided with a plurality of movable clamps (11), and the movable clamps (11) are triangular in structure. One corner is rotatably connected to the rotating ring (10) through a first positioning pin (12), and another corner is rotatably connected to the positioning ring (9) through a second positioning pin (13) while being slidably connected. The remaining corner is located in the middle of the rotating ring (10) and is connected to a positioning wheel (14).

2. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The protective sleeve (3) is equidistantly positioned on the outside of the connecting pipe (1), and the length of the protective sleeve (3) near the air outlet (6) is greater than the combined length of the connecting pipe (1) and the adjusting cap (8).

3. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The multiple heat dissipation holes (4) on the protective sleeve (3) are located on one side of the protective sleeve (3) at the air outlet (6), and the multiple heat dissipation holes (4) are evenly arranged on the protective sleeve (3).

4. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The inner diameter of the bottom of the adjusting cap (8) matches the outer diameter of the air outlet (6) of the connecting pipe (1) and is connected by a thread. The end of the adjusting cap (8) away from the connecting pipe (1) is one of the following: round, straight, or mesh.

5. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The outer side of the positioning ring (9) is an integral structure with the protective sleeve (3), and both the positioning ring (9) and the rotating ring (10) are located on the outer side of the connecting pipe (1). A movable port (15) is provided on one side above the positioning ring (9). An adjusting plate (16) is provided at the movable port (15) of the rotating ring (10). One side of the adjusting plate (16) is fixedly connected to the positioning ring (9) by a fixing bolt (17). At the same time, a guide groove (18) corresponding to the movable port (15) is provided at the fixing bolt (17) of the positioning ring (9).

6. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The number of movable clamps (11) is three, and the three movable clamps (11) are set at equal angles. The inner side of the positioning ring (9) and the rotating ring (10) is provided with a storage groove (19) corresponding to the movable clamp (11). The connecting pipe (1) is located at the movable clamp (11) and there is a partition for the movement of the movable clamp (11).

7. The protective mechanism for a hot air gun used in automotive sheet metal repair according to claim 1, characterized in that: The positioning ring (9) is located at the connection point of the second positioning pin (13) with a straight groove structure, so that the second positioning pin (13) slides and rotates to a certain extent in the straight groove during the rotation of the movable chuck (11) with the rotating ring (10).

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