Air exhausting device of pneumatic air screw driver

Abstract

The utility model discloses a pneumatic air screwdriver exhaust device, which relates to the technical field of air screwdrivers and comprises a pneumatic air screwdriver body, an air outlet shell is mounted on a shell of the pneumatic air screwdriver body, a heat dissipation mechanism is mounted outside the pneumatic air screwdriver body, and an exhaust structure is mounted on the rear wall surface of the heat dissipation mechanism. The front wall face and the rear wall face of the air outlet shell are 45-degree inclined faces, fifteen air outlet holes are formed in the rear inclined face of the air outlet shell, and the fifteen air outlet holes are evenly formed in the rear inclined face of the air outlet shell. The flowing direction of air flow exhausted by the pneumatic screwdriver is changed, the exhausted air flow can improve the flowing speed of air outside the heat dissipation structure, and therefore the heat dissipation effect is improved, the energy of the air flow is converted into vibration through the noise reduction structure, and therefore noise generated by air flow exhaust is reduced, and the service life of the pneumatic screwdriver is prolonged. And the influence of noise on operators is reduced to a certain extent.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic screwdriver technology, and in particular to a pneumatic screwdriver exhaust device. Background Technology

[0002] A pneumatic screwdriver is a common name for a pneumatic screwdriver, which is a type of pneumatic tool that uses compressed air to quickly tighten or loosen screws.

[0003] Most existing pneumatic screwdrivers have six to eight exhaust holes, which generate considerable noise. The pneumatic screwdriver exhaust device with publication number CN202174567U reduces the noise generated by exhaust to some extent by adding exhaust holes and sealing rings. Although the above technical solutions can reduce noise to a certain extent, they will still have a certain impact on operators after long-term use.

[0004] Pneumatic screwdrivers are high-speed rotating tools. High-speed rotation generates heat, especially over a long period of time. This heat accumulates inside the pneumatic screwdriver, and prolonged exposure to high temperatures can cause it to malfunction. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of existing technologies and to propose a pneumatic exhaust device for blowers. To achieve the above objective, this utility model adopts the following technical solution:

[0006] A pneumatic screwdriver exhaust device includes: a pneumatic screwdriver body, an exhaust shell installed on the outer shell of the pneumatic screwdriver body, a heat dissipation mechanism installed on the outside of the pneumatic screwdriver body, and an exhaust structure installed on the rear wall of the heat dissipation mechanism; the front and rear walls of the exhaust shell are 45-degree inclined planes, and 15 exhaust holes are provided on the rear inclined plane of the exhaust shell, and the 15 exhaust holes are evenly arranged on the rear inclined plane of the exhaust shell.

[0007] Preferably, the heat dissipation mechanism includes: a heat-conducting plate, a plurality of heat dissipation plates, and an exhaust shell; the heat-conducting plate is installed on the outer wall surface of the pneumatic blower body, the plurality of heat dissipation plates are installed on the outer wall surface of the heat-conducting plate, the exhaust shell is installed on the outer wall surface of the exhaust shell, and the rear wall surface of the exhaust shell is provided with an exhaust port.

[0008] Preferably, the exhaust structure includes an exhaust hood and a plurality of sound-absorbing plates; the exhaust hood is installed on the outside of the pneumatic blower body and is aligned with the exhaust port of the exhaust shell, and the plurality of sound-absorbing plates are alternately installed on the inner wall surface of the exhaust hood.

[0009] Preferably, the axis of the air outlet described in section 15 is perpendicular to the rear inclined surface of the air outlet shell.

[0010] Preferably, the inner wall of the exhaust hood is a smooth curved surface, which allows airflow to pass through smoothly.

[0011] Preferably, some of the sound-absorbing plates are made of brass.

[0012] The beneficial effects of this utility model are as follows: By changing the airflow direction of the pneumatic screwdriver, the exhaust airflow can increase the flow rate of the gas outside the heat dissipation structure, thereby increasing the heat dissipation effect. Furthermore, through the noise reduction structure, the energy of the airflow is converted into vibration, thereby reducing the noise of the exhaust airflow and reducing the impact of noise on the operator to a certain extent. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a pneumatic blower exhaust device proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the first internal structure of a pneumatic blower exhaust device proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the second internal structure of a pneumatic blower exhaust device proposed in this utility model;

[0016] Figure 4 This is a schematic diagram of the exhaust structure of a pneumatic blower exhaust device proposed in this utility model.

[0017] In the diagram: 1. Pneumatic blower body; 2. Air outlet shell; 3. Air outlet hole; 4. Heat conduction plate; 5. Heat sink; 6. Exhaust shell; 7. Exhaust cover; 8. Silencing plate. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] The embodiments of this patent are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0020] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0021] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0022] Reference Figure 1-4 A pneumatic screwdriver exhaust device includes: a pneumatic screwdriver body 1, an exhaust shell 2 installed on the outer shell of the pneumatic screwdriver body 1, a heat dissipation mechanism installed on the outside of the pneumatic screwdriver body 1, and an exhaust structure installed on the rear wall of the heat dissipation mechanism; the front and rear walls of the exhaust shell 2 are 45-degree inclined planes, and fifteen exhaust holes 3 are provided on the rear inclined plane of the exhaust shell 2, and the fifteen exhaust holes 3 are evenly arranged on the rear inclined plane of the exhaust shell 2, and the axis of the fifteen exhaust holes 3 is perpendicular to the rear inclined plane of the exhaust shell 2.

[0023] As a preferred embodiment, the heat dissipation mechanism further includes: a heat-conducting plate 4, a plurality of heat sinks 5, and an exhaust shell 6; the heat-conducting plate 4 is installed on the outer wall surface of the pneumatic blower body 1, the plurality of heat sinks 5 are installed on the outer wall surface of the heat-conducting plate 4, the exhaust shell 6 is installed on the outer wall surface of the exhaust shell 2, and the rear wall surface of the exhaust shell 6 is provided with an exhaust port.

[0024] As a preferred embodiment, the exhaust structure further includes: an exhaust hood 7 and several silencers 8; the exhaust hood 7 is installed on the outside of the pneumatic blower body 1 and is aligned with the exhaust port of the exhaust shell 6; several silencers 8 are alternately installed on the inner wall surface of the exhaust hood 7; the inner wall surface of the exhaust hood 7 is a smooth curved surface that allows airflow to pass through smoothly; and the several silencers 8 are made of brass.

[0025] Working principle: The air outlet shell 2 in this utility model is located in the exhaust section of the pneumatic screwdriver body 1, allowing the exhaust of the pneumatic screwdriver body 1 to be directly connected to the air outlet 3. When using the pneumatic screwdriver body 1, the gas is discharged through the air outlet 3 on the air outlet shell 2 and flows through the inner wall of the exhaust cover 7, and is discharged from the exhaust port of the exhaust cover 7. When the gas is discharged, it will pass through the staggered sound-absorbing plates 8. The sound-absorbing plates 8 made of brass can effectively absorb vibration, thereby reducing the energy of the discharged air and reducing the noise of the exhaust of the pneumatic screwdriver body 1. At the same time, the internal rotating parts of the pneumatic screwdriver body 1 will generate a certain amount of heat when they rotate. This heat will be transferred to the heat-conducting plate 4 and several heat sinks 5. When the exhaust airflow is discharged from the air outlet 3, it will increase the airflow speed outside the heat sinks 5, thereby carrying away the heat and achieving the purpose of heat dissipation.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pneumatic screwdriver exhaust device, comprising: a pneumatic screwdriver body (1), characterized in that, The pneumatic blower body (1) has an air outlet shell (2) installed on its outer shell. A heat dissipation mechanism is installed on the outside of the pneumatic blower body (1). An exhaust structure is installed on the rear wall of the heat dissipation mechanism. The front and rear walls of the air outlet shell (2) are 45-degree inclined planes. Fifteen air outlet holes (3) are provided on the rear inclined plane of the air outlet shell (2). The fifteen air outlet holes (3) are evenly arranged on the rear inclined plane of the air outlet shell (2).

2. The pneumatic blower exhaust device according to claim 1, characterized in that, The heat dissipation mechanism includes: a heat-conducting plate (4), a plurality of heat dissipation plates (5) and an exhaust shell (6); the heat-conducting plate (4) is installed on the outer wall of the pneumatic blower body (1), the plurality of heat dissipation plates (5) are installed on the outer wall of the heat-conducting plate (4), the exhaust shell (6) is installed on the outer wall of the exhaust shell (2), and the rear wall of the exhaust shell (6) is provided with an exhaust port.

3. The pneumatic blower exhaust device according to claim 1, characterized in that, The exhaust structure includes an exhaust hood (7) and several silencers (8); the exhaust hood (7) is installed on the outside of the pneumatic blower body (1) and the exhaust hood (7) is aligned with the exhaust port of the exhaust shell (6); the several silencers (8) are staggered on the inner wall surface of the exhaust hood (7).

4. The pneumatic blower exhaust device according to claim 1, characterized in that, The axis of the air outlet (3) described in section 15 is perpendicular to the rear inclined surface of the air outlet shell (2).

5. The pneumatic blower exhaust device according to claim 3, characterized in that, The inner wall of the exhaust hood (7) is a smooth curved surface, which allows airflow to pass through smoothly.

6. The pneumatic exhaust device for a blower according to claim 3, characterized in that, Several of the aforementioned sound-absorbing plates (8) are made of brass.

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