Multi-gear hot air gun

Abstract

The utility model relates to the technical field of hot air guns, in particular to a multi-gear hot air gun. According to the technical scheme, the spray gun comprises a gun body and a handle installed at the bottom of the gun body, a gun nozzle is arranged at one end of the gun body, and the spray gun further comprises a blocking cover installed at one end of the gun body and used for covering the gun nozzle; and the transmission mechanism is arranged on the gun body and is used for quickly opening or closing the blocking cover. According to the hot air gun, the blocking cover, the gun body, the transmission mechanism, the pressing mechanism and other structures are matched, fingers and skin of a user can be protected from being hurt by high-temperature air, and after the blocking cover is automatically closed, safety accidents caused by misoperation in the using process of the hot air gun can be avoided. When the blocking cover is closed, dust and sundries can be prevented from entering the gun nozzle, the gun nozzle is kept clean, and the service life of the hot air gun is prolonged, and the performance of the hot air gun is improved. In addition, due to the design of the pressing mechanism, the blocking cover can be automatically closed, operation is easy and convenient, and a user can easily control the opening and closing state of the blocking cover as needed.

Description

Technical Field

[0001] The utility model relates to the technical field of hot air guns, in particular to a multi-speed hot air gun. Background Art

[0002] A hot air gun is a tool that uses hot air to generate high-temperature airflow for work. It usually consists of a heating element and a gun nozzle. The high-temperature airflow generated by the heating element can be used to heat, dry, weld, and other operations on objects. Hot air guns are widely used in industrial production, laboratory research, home maintenance, and other fields. When using a hot air gun, you need to pay attention to safe operation to avoid burns or other accidents. Among them, a multi-speed hot air gun is a hot air gun that can adjust the temperature of the hot air at different temperature gears. It usually has multiple gears, each corresponding to a different temperature range. However, the temperature of the existing multi-speed hot air gun nozzle is very high during use, resulting in the danger of burns if the staff accidentally touches the nozzle of the hot air gun during use. In addition, the hot air gun nozzle with a very high temperature is easily affected by external objects, causing damage to the nozzle and affecting the use effect. Therefore, the utility model designs a multi-speed hot air gun. Utility Model Content

[0003] The utility model aims to provide a multi-speed hot air gun in view of the problems existing in the background technology.

[0004] The technical solution of the utility model is as follows: a multi-speed hot air gun comprises a gun body and a handle installed at the bottom of the gun body, one end of the gun body is provided with a gun nozzle, and further comprises: a shield installed at one end of the gun body for covering the gun nozzle; a transmission mechanism arranged on the gun body for quickly opening or closing the shield; and a pressing mechanism connected to the gun body and used for automatically closing the shield after cooperating with the transmission mechanism.

[0005] Optionally, the transmission mechanism includes a rotating seat mounted on the gun body, a rotating block fixedly connected to the baffle cover, a rotating rod rotatably connected to the rotating seat, the rotating rod is fixedly connected to one end of the rotating block, gears are fixedly connected to both ends of the rotating rod, a U-shaped rack meshing with the gear is provided on the gun body, and the U-shaped rack is fixedly connected to a connecting rod.

[0006] Optionally, one end of the connecting rod is fixedly connected to a pulling block.

[0007] Optionally, a pair of limit blocks for supporting the sliding of the U-shaped rack are provided on the rotating seat.

[0008] Optionally, the pressing mechanism includes a limit sleeve block connected to the gun body, the limit sleeve block is used to limit the sliding of the connecting rod, the upper surface of the limit sleeve block is fixedly connected to a bottom block, the bottom block is rotatably connected to a rotating clamping rod, one end of the rotating clamping rod is provided with a clamping block, the connecting rod is provided with a protrusion for being clamped by the clamping block, the gun body is fixedly connected to a sleeve rod, and the interior of the sleeve rod is provided with a first spring for pushing the connecting rod to return to its original position.

[0009] Optionally, the upper surface of the limiting sleeve block is provided with a second spring for enabling a block at one end of the rotating clamping rod to automatically clamp the protrusion.

[0010] Optionally, the shield is provided with a plurality of air holes for hot air to pass through.

[0011] Compared with the prior art, the utility model has the following beneficial technical effects:

[0012] The utility model utilizes the cooperation of structures such as a shield, a gun body, a transmission mechanism, and a pressing mechanism to protect the user's fingers and skin from being harmed by high-temperature air. After the shield is automatically closed, safety accidents caused by misoperation during the use of the hot air gun can be avoided. When the shield is closed, dust and debris can be prevented from entering the gun mouth, keeping the gun mouth clean, which helps to improve the service life and performance of the hot air gun. In addition, the design of the pressing mechanism can make the shield automatically close, and the operation is simple and convenient. The user can easily control the switch state of the shield when needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a multi-speed hot air gun of the utility model is given;

[0014] Figure 2 for Figure 1 Schematic diagram of the expanded structure;

[0015] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0016] Figure 4 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0017] Figure 5 for Figure 2 Enlarged schematic diagram of point C in the middle.

[0018] 1. Gun body; 101. Rotating seat; 102. Rotating rod; 103. Gear; 104. Limit block; 105. U-shaped rack; 106. Connecting rod; 107. Sleeve rod; 108. First spring; 109. Limit sleeve block; 110. Bottom block; 111. Rotating lever; 112. Second spring; 113. Protrusion; 114. Pull block; 2. Handle; 3. Gun nozzle; 4. Shield; 41. Air vent; 42. Rotating block. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0020] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0021] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example

[0026] like Figure 1-5 As shown, the utility model proposes a multi-gear hot air gun, which means that the hot air gun can be divided into multiple levels or stages when adjusting the air volume and temperature. These gears are usually used for different work scenes and needs, such as welding, disassembly, repair, etc. According to actual needs, users can freely switch different gears to meet different operating requirements. It includes a gun body 1 and a handle 2 installed at the bottom of the gun body 1, and a gun nozzle 3 is provided at one end of the gun body 1. It also includes: a shield 4 installed at one end of the gun body 1 for covering the gun nozzle 3, and a plurality of air holes 41 for hot air to pass through are provided on the shield 4. The function of the air holes 41 is to reduce the pressure inside the gun nozzle 3, thereby reducing the wear of the gun nozzle 3 and extending the service life; a transmission mechanism is arranged on the gun body 1 for quickly opening or closing the shield 4; a pressing mechanism is connected to the gun body 1 and cooperates with the transmission mechanism to automatically close the shield 4.

[0027] Further, the transmission mechanism includes a rotating seat 101 mounted on the gun body 1, and a pair of limit blocks 104 for supporting the sliding of the U-shaped rack 105 are arranged on the rotating seat 101, and a groove is provided on the limit block 104, and the groove is used to limit the sliding of the U-shaped rack 105. The shield 4 is fixedly connected with a rotating block 42, and the rotating seat 101 is rotatably connected with a rotating rod 102, and both ends of the rotating rod 102 are movable through the rotating seat 101, and the function is to facilitate the fixed connection with the gear 103. The rotating rod 102 is fixedly connected to one end of the rotating block 42, and the two ends of the rotating rod 102 are fixedly connected to the gear 103, and the gun body 1 is provided with a U-shaped rack 105 meshing with the gear 103, and the U-shaped rack 105 is fixedly connected to the connecting rod 106, and one end of the connecting rod 106 is fixedly connected to a pull block 114, and the function of the pull block 114 is to facilitate the user to pull one end of the connecting rod 106.

[0028] Furthermore, the pressing mechanism includes a limiting sleeve 109 connected to the gun body 1, and the limiting sleeve 109 is used to limit the sliding direction of the connecting rod 106. The upper surface of the limiting sleeve 109 is provided with a second spring 112 for automatically clamping the block at one end of the rotating clamping rod 111 to the protrusion 113, and the function of the second spring 112 is to pull the rotating clamping rod 111 to restore the original position, and its function is that the rotating clamping rod 111 restored to the original position will drive the block to automatically clamp the protrusion 113. The limiting sleeve block 109 is used to limit the sliding of the connecting rod 106. The upper surface of the limiting sleeve block 109 is fixedly connected to the bottom block 110. The bottom block 110 is rotatably connected to a rotating clamping rod 111. A clamping block is provided at one end of the rotating clamping rod 111. A protrusion 113 for being clamped by the clamping block is provided on the connecting rod 106. A sleeve rod 107 is fixedly connected to the gun body 1. A first spring 108 for pushing the connecting rod 106 to return to its original position is provided inside the sleeve rod 107.

[0029] In this embodiment, when a multi-speed hot air gun is required, Figure 1 As shown, the pull block 114 is pulled in the direction of the handle 2, and one end of the pull block 114 drives one end of the connecting rod 106 to move, and the connecting rod 106 drives the protrusion 113 to resist the block at one end of the rotating clamping rod 111, and the rotating clamping rod 111 drives the block at one end to clamp the protrusion 113 through the elastic tension of the second spring 112. At this time, the other end of the connecting rod 106 drives the U-shaped rack 105 to move, and since the U-shaped rack 105 is meshed with the pair of gears 103, the U-shaped rack 105 drives the gear 103 to rotate, and the rotating pair of gears 103 drives the rotating rod 102 to rotate, and the rotating rod 102 drives one end of the rotating block 42 to rotate, and the other end of the rotating block 42 drives the shield 4 to rotate, and the shield 4 after rotation cannot cover the gun nozzle 3 on one end of the gun body 1, and the hot air gun can be used by adjusting the size of the gear on the handle 2.

[0030] When the multi-speed hot air gun is used, Figure 5 As shown, by pressing the end of the rotating lever 111 without the block, the rotating lever 111 is rotated by the support of the bottom block 110, and the block at one end of the rotating lever 111 cannot be clamped on the protrusion 113 on the connecting rod 106. Figure 2 As shown, at this time, the connecting rod 106 is subjected to the elastic thrust of the first spring 108 in the sleeve rod 107. Figure 3 As shown, one end of the connecting rod 106 pushes the U-shaped rack 105 to move, and the U-shaped rack 105 drives the gear 103 and the rotating rod 102 to rotate, and finally drives the shield 4 to cover the gun nozzle 3 on one end of the gun body 1 again through the rotating block 42, so as to prevent the gun nozzle 3 from being burned by the user due to the high temperature after use.

[0031] The preferred embodiments of the utility model of the above utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A multi-speed hot air gun, comprising a gun body (1) and a handle (2) mounted at the bottom of the gun body (1), wherein a gun nozzle (3) is disposed at one end of the gun body (1), characterized in that: Also includes: A shield (4) mounted at one end of the gun body (1) and used for covering the gun mouth (3); A transmission mechanism disposed on the gun body (1) and used for enabling the shield (4) to be opened or closed quickly; A pressing mechanism is connected to the gun body (1) and is used to automatically close the shield (4) after cooperating with the transmission mechanism.

2. A multi-speed hot air gun according to claim 1, characterized in that: The transmission mechanism comprises a rotating seat (101) mounted on the gun body (1), a rotating block (42) fixedly connected to the blocking cover (4), a rotating rod (102) rotatably connected to the rotating seat (101), the rotating rod (102) being fixedly connected to one end of the rotating block (42), gears (103) being fixedly connected to both ends of the rotating rod (102), a U-shaped rack (105) meshingly connected to the gear (103) being provided on the gun body (1), and a connecting rod (106) being fixedly connected to the U-shaped rack (105).

3. A multi-speed hot air gun according to claim 2, characterized in that: One end of the connecting rod (106) is fixedly connected to a pulling block (114).

4. A multi-speed hot air gun according to claim 2, characterized in that: The rotating seat (101) is provided with a pair of limit blocks (104) for supporting the sliding of the U-shaped rack (105).

5. The multi-speed hot air gun according to claim 1, characterized in that: The pressing mechanism comprises a limiting sleeve block (109) connected to the gun body (1), the limiting sleeve block (109) is used to limit the sliding of the connecting rod (106), the upper surface of the limiting sleeve block (109) is fixedly connected to a bottom block (110), the bottom block (110) is rotatably connected to a rotating clamping rod (111), one end of the rotating clamping rod (111) is provided with a clamping block, the connecting rod (106) is provided with a protrusion (113) for being clamped by the clamping block, the gun body (1) is fixedly connected to a sleeve rod (107), and a first spring (108) is provided inside the sleeve rod (107) for pushing the connecting rod (106) to return to its original position.

6. A multi-speed hot air gun according to claim 5, characterized in that: The upper surface of the limiting sleeve block (109) is provided with a second spring (112) for enabling a block at one end of the rotating clamping rod (111) to automatically clamp the protrusion (113).

7. A multi-speed hot air gun according to claim 2, characterized in that: The shield (4) is provided with a plurality of air holes (41) for hot air to pass through.

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