Low-noise pneumatic angle grinder

Abstract

The low-noise pneumatic angle grinder comprises a grabbing structure, the grabbing structure comprises a connecting rod, an air inlet, an anti-skid structure, a switch, a shell, a handle and an air outlet, an air bellow is installed at the top end of the shell, an installation block is installed in the air bellow, fan blades are installed on the outer side of the installation block, and a connecting shaft is installed at the bottom end of the installation block. The connecting shaft is mounted in the shell, when the grinding wheel is pneumatically driven to rotate, the grinding wheel rotates to drive the connecting shaft to rotate, the connecting shaft rotates to drive the mounting block to rotate, the mounting block rotates to drive the fan blades to rotate, and the fan blades rotate to generate suction force to discharge heat in the device. And the fan blades are installed in the air bellow, the heat dissipation holes formed in the air bellow at equal intervals can conduct ventilation, hot air can conduct heat dissipation, and therefore the purpose that the pneumatic angle grinder can conveniently conduct heat dissipation on the device is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle grinders, in particular to a low-noise pneumatic angle grinder. Background Art

[0002] Angle grinder, also known as grinding machine or disc grinder, is a kind of grinding tool used for cutting and grinding fiberglass. Angle grinder is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metal and stone, etc. It is a commonly used processing device. The working principle of pneumatic angle grinder is mainly based on compressed air to drive the motor, thereby driving the gear box and grinding disc to rotate at high speed to achieve the functions of grinding and cutting. Traditional pneumatic angle grinders have some shortcomings, which requires a low-noise pneumatic angle grinder.

[0003] To this end, China's patent application number is CN219075243U, which discloses a pneumatic angle grinder, including an angle grinder body, a handle fixedly connected to the side wall of the angle grinder body, a collar fixedly sleeved on the outer side wall of the angle grinder body, a connecting shield fixedly connected to the bottom of the collar, a connecting protective plate arranged below the connecting shield, and two connecting strips fixedly connected to the bottom of the connecting shield. The utility model, by rotating the adjusting turn block, causes the adjusting turn block to drive the adjusting worm to rotate, and at the same time, the adjusting worm meshes with the fixed worm gear, so as to drive the fixed worm gear and the fixed shaft to rotate, and the fixed support plate and the fixed shield on the fixed shaft are adjusted to a suitable angle as needed, so that the fixed shield further controls the splashing of the cut metal waste, and at the same time reduces the waste chips from injuring the staff, and at the same time can control the direction of the grinding waste chips splashing, thereby improving the use effect.

[0004] The above-mentioned prior art enables the fixed shield to further control the splashing of cut metal waste chips, while reducing the risk of waste chips injuring the staff, and at the same time can control the direction of the splashing of grinding waste chips, thereby improving the use effect. However, 1. It is difficult for the pneumatic angle grinder to dissipate heat from the device. When the device is working, it will generate heat. Excessive heat in the device will affect the working efficiency of the device.

[0005] 2. It is difficult to reduce the noise of pneumatic angle grinders. When the gas enters and exhausts, it will generate a certain amount of noise, which will affect the work of the workers. Utility Model Content

[0006] The utility model aims to provide a low-noise pneumatic angle grinder, so as to solve the defects of the existing pneumatic angle grinders that it is difficult to dissipate heat and reduce noise.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a low-noise pneumatic angle grinder, comprising a gripping structure;

[0008] The gripping structure comprises a connecting rod, an air inlet, an anti-slip structure, a switch, a housing, a handle and an air outlet, wherein the air inlet is installed on one side of the connecting rod and the switch is installed on the top of the connecting rod;

[0009] A shell is installed on one side of the connecting rod, and a handle is installed on one end of the shell, an air outlet is installed on the other end of the shell, a sound insulation structure is installed on one side of the air outlet, a protective plate is installed on the bottom end of the shell, and a grinding wheel is installed on the bottom end of the protective plate;

[0010] A heat dissipation structure is installed at the top of the shell, and the heat dissipation structure includes a bellows, heat dissipation holes, fan blades, a mounting block and a connecting shaft. The bellows is installed at the top of the shell, a mounting block is installed inside the bellows, and fan blades are installed on the outside of the mounting block, and a connecting shaft is installed at the bottom end of the mounting block.

[0011] When in use, firstly the anti-skid pad on the connecting rod can enhance the friction of the connecting rod. The anti-skid pad can be made of sponge material. The anti-skid pad is elastic and can be more comfortable when gripping. At the same time, the grooves and anti-skid patterns on the anti-skid pad are arranged at equal intervals. The anti-skid pad can make the user's grip more stable and prevent slipping. Gas can enter through the air inlet and be discharged through the air outlet. The air pressure passes through the connecting rod and the outer shell, and the grinding wheel will be driven to rotate through pneumatics. The rotation of the grinding wheel can grind and cut the material.

[0012] Preferably, an anti-slip structure is installed on one side of the connecting rod, and the anti-slip structure includes an anti-slip pad, a groove and an anti-slip pattern. The anti-slip pad is installed on one side of the connecting rod, and a groove is installed on the outer side of the anti-slip pad. The anti-slip pad on the connecting rod can enhance the friction of the connecting rod. The anti-slip pad can be made of sponge material. The anti-slip pad is elastic and can be more comfortable when gripping. The anti-slip pad can allow the user to grip more stably and prevent slipping.

[0013] Preferably, the outer side of the anti-skid pad is provided with anti-skid patterns, and the anti-skid patterns are arranged at equal intervals on the outer side of the anti-skid pad, and the grooves and the anti-skid patterns on the anti-skid pad are arranged at equal intervals.

[0014] Preferably, the top of the bellows is provided with heat dissipation holes, and the heat dissipation holes are arranged at equal intervals on the top of the bellows, and the heat dissipation holes arranged at equal intervals on the bellows can be ventilated.

[0015] Preferably, the sound insulation structure includes a sound-absorbing sheet, a through hole, a first connecting plate, a second connecting plate and fixing screws, the sound-absorbing sheet is arranged on one side of the air outlet, a through hole is arranged at one end of the sound-absorbing sheet, a first connecting plate is installed at the top or bottom of the sound-absorbing sheet, the second connecting plate is installed at the top and bottom of the air outlet, a fixing screw passes through the middle position of the first connecting plate, the sound-absorbing sheet can be made of sound-absorbing material, the surface of the sound-absorbing sheet is coated with sound-absorbing paint, the material of the sound-absorbing sheet can be aluminum, the sound-absorbing sheet can reduce the noise generated during the exhaust, and the gas can be discharged through the through hole.

[0016] Preferably, a clamping block is provided at one end of the sound absorbing sheet, a clamping slot is provided at one end of the air outlet, and the sound absorbing sheet and the air outlet form a clamping structure, which can be assembled and disassembled.

[0017] Preferably, external threads are evenly arranged on the outer wall of the fixing screw, and internal threads matching with the external threads are evenly arranged on the inner wall of the second connecting plate. The fixing screw is threadedly connected to the second connecting plate, and the fixing screw and the first connecting plate and the second connecting plate form a threaded connection. The sound-absorbing sheet can be fixed to the air outlet by the fixing screw.

[0018] The low-noise pneumatic angle grinder provided by the utility model has the following advantages: by installing a connecting shaft inside the shell, when the pneumatic drive drives the grinding wheel to rotate, the rotation of the grinding wheel will also drive the connecting shaft to rotate, and the rotation of the connecting shaft can drive the mounting block to rotate, and the rotation of the mounting block can drive the fan blades to rotate, and the rotation of the fan blades can generate suction to discharge the heat inside the device and dissipate the heat inside the device, the fan blades are installed inside the bellows, and the heat dissipation holes arranged at equal intervals on the bellows can be ventilated to allow the hot air to dissipate, thereby achieving the purpose of the pneumatic angle grinder facilitating the heat dissipation of the device.

[0019] A sound-absorbing sheet is installed on one side of the air outlet. The sound-absorbing sheet can be made of sound-absorbing material. The surface of the sound-absorbing sheet is coated with sound-absorbing paint. The material of the sound-absorbing sheet can be aluminum. The sound-absorbing sheet can reduce the noise generated during air outlet. The gas can be discharged through the through hole. The fixing screws and the first connecting plate and the second connecting plate form a threaded connection. The sound-absorbing sheet can be fixed to the air outlet by the fixing screws. The sound-absorbing sheet can be removed when not needed, thereby achieving the purpose of reducing noise of the pneumatic angle grinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 3 For the utility model Figure 1A partial cross-section at the center is an enlarged structural diagram;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the sound insulation structure of the utility model;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the heat dissipation structure of the utility model.

[0025] Explanation of the reference numerals in the figure: 1. Gripping structure; 101. Connecting rod; 102. Air inlet; 103. Anti-skid structure; 1031. Anti-skid pad; 1032. Groove; 1033. Anti-skid pattern; 104. Switch; 105. Housing; 106. Handle; 107. Air outlet; 2. Grinding wheel; 3. Heat dissipation structure; 301. Bellows; 302. Heat dissipation holes; 303. Fan blades; 304. Mounting block; 305. Connecting shaft; 4. Sound insulation structure; 401. Sound-absorbing sheet; 402. Through hole; 403. First connecting plate; 404. Second connecting plate; 405. Fixing screw; 5. Protective plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] See also Figure 1-Figure 5 The utility model provides an embodiment: a low-noise pneumatic angle grinder, including a gripping structure 1.

[0028] The gripping structure 1 includes a connecting rod 101, an air inlet 102, an anti-slip structure 103, a switch 104, a housing 105, a handle 106 and an air outlet 107. The air inlet 102 is installed on one side of the connecting rod 101, and the anti-slip structure 103 is installed on one side of the connecting rod 101. The anti-slip structure 103 includes an anti-slip pad 1031, a groove 1032 and anti-slip patterns 1033. The anti-slip pad 1031 is installed on one side of the connecting rod 101, and the anti-slip patterns 1033 are arranged on the outside of the anti-slip pad 1031 at equal intervals, and the groove 1032 is installed on the outside of the anti-slip pad 1031.

[0029] See attached Figure 1-3As shown, the anti-skid pad 1031 on the connecting rod 101 can enhance the friction of the connecting rod 101. The anti-skid pad 1031 can be made of sponge material. The anti-skid pad 1031 is elastic and can be more comfortable when gripping. At the same time, the grooves 1032 and anti-skid patterns 1033 on the anti-skid pad 1031 are arranged at equal intervals. The anti-skid pad 1031 can make the user's grip more stable and prevent slipping. Gas can enter through the air inlet 102 and be discharged through the air outlet 107. The air pressure passes through the connecting rod 101 and the outer shell 105, and will pneumatically drive the grinding wheel 2 to rotate. The rotation of the grinding wheel 2 can grind and cut the material.

[0030] A switch 104 is installed at the top of the connecting rod 101, a shell 105 is installed on one side of the connecting rod 101, and a handle 106 is installed at one end of the shell 105, an air outlet 107 is installed at the other end of the shell 105, and a sound insulation structure 4 is installed on one side of the air outlet 107. The sound insulation structure 4 includes a sound absorbing sheet 401, a through hole 402, a first connecting plate 403, a second connecting plate 404 and a fixing screw 405. The sound absorbing sheet 401 is arranged on one side of the air outlet 107, a card block is arranged at one end of the sound absorbing sheet 401, and a card slot is arranged at one end of the air outlet 107. The sound absorbing sheet 401 and the air outlet 107 constitute a snap-fit ​​structure.

[0031] A through hole 402 is provided at one end of the sound absorbing sheet 401, a first connecting plate 403 is installed at the top or bottom of the sound absorbing sheet 401, a second connecting plate 404 is installed at the top and bottom of the air outlet 107, a fixing screw 405 passes through the middle position of the first connecting plate 403, external threads are evenly provided on the outer wall of the fixing screw 405, internal threads matching the external threads are evenly provided on the inner wall of the second connecting plate 404, and the fixing screw 405 and the second connecting plate 404 are threadedly connected.

[0032] See attached Figure 1-2 and attached Figure 4 As shown, the sound-absorbing sheet 401 can be made of sound-absorbing material, and the surface of the sound-absorbing sheet 401 is coated with sound-absorbing paint. The material of the sound-absorbing sheet 401 can be aluminum. The sound-absorbing sheet 401 can reduce the noise generated when the gas is discharged, and the gas can be discharged through the through hole 402. The fixing screws 405 and the first connecting plate 403 and the second connecting plate 404 form a threaded connection. The sound-absorbing sheet 401 can be fixed to the air outlet 107 by the fixing screws 405, and the sound-absorbing sheet 401 can be removed when not needed.

[0033] A protection plate 5 is installed at the bottom end of the housing 105 , and a grinding wheel 2 is installed at the bottom end of the protection plate 5 .

[0034] A heat dissipation structure 3 is installed at the top of the shell 105, and the heat dissipation structure 3 includes a bellows 301, heat dissipation holes 302, fan blades 303, a mounting block 304 and a connecting shaft 305. The bellows 301 is installed at the top of the shell 105, and heat dissipation holes 302 are arranged at equal intervals at the top of the bellows 301.

[0035] A mounting block 304 is installed inside the bellows 301 , and a fan blade 303 is installed on the outside of the mounting block 304 . A connecting shaft 305 is installed at the bottom end of the mounting block 304 .

[0036] See attached Figure 1-2 and attached Figure 5 As shown, when the grinding wheel 2 is pneumatically driven to rotate, the rotation of the grinding wheel 2 will also drive the connecting shaft 305 to rotate. The rotation of the connecting shaft 305 can drive the mounting block 304 to rotate. The rotation of the mounting block 304 can drive the fan blades 303 to rotate. The rotation of the fan blades 303 can generate suction to discharge the heat inside the device and dissipate the heat inside the device. The fan blades 303 are installed inside the bellows 301. The heat dissipation holes 302 arranged at equal intervals on the bellows 301 can be ventilated to allow the hot air to dissipate.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A low-noise pneumatic angle grinder, comprising a gripping structure (1); Features: The gripping structure (1) comprises a connecting rod (101), an air inlet (102), an anti-slip structure (103), a switch (104), a housing (105), a handle (106) and an air outlet (107); the air inlet (102) is installed on one side of the connecting rod (101), and the switch (104) is installed on the top end of the connecting rod (101); A housing (105) is installed on one side of the connecting rod (101), and a handle (106) is installed on one end of the housing (105); an air outlet (107) is installed on the other end of the housing (105); a sound insulation structure (4) is installed on one side of the air outlet (107); a protective plate (5) is installed on the bottom end of the housing (105), and a grinding wheel (2) is installed on the bottom end of the protective plate (5); A heat dissipation structure (3) is installed at the top of the housing (105), and the heat dissipation structure (3) comprises a bellows (301), heat dissipation holes (302), fan blades (303), a mounting block (304) and a connecting shaft (305); the bellows (301) is installed at the top of the housing (105); the mounting block (304) is installed inside the bellows (301), and the fan blades (303) are installed outside the mounting block (304); and the connecting shaft (305) is installed at the bottom of the mounting block (304).

2. A low-noise pneumatic angle grinder according to claim 1, characterized in that: An anti-skid structure (103) is installed on one side of the connecting rod (101), and the anti-skid structure (103) comprises an anti-skid pad (1031), a groove (1032) and an anti-skid pattern (1033). The anti-skid pad (1031) is installed on one side of the connecting rod (101), and the groove (1032) is installed on the outer side of the anti-skid pad (1031).

3. A low-noise pneumatic angle grinder according to claim 2, characterized in that: The outer side of the anti-skid pad (1031) is provided with anti-skid patterns (1033), and the anti-skid patterns (1033) are arranged at equal intervals on the outer side of the anti-skid pad (1031).

4. A low-noise pneumatic angle grinder according to claim 1, characterized in that: The top of the wind box (301) is provided with heat dissipation holes (302), and the heat dissipation holes (302) are arranged at equal intervals at the top of the wind box (301).

5. A low-noise pneumatic angle grinder according to claim 1, characterized in that: The sound insulation structure (4) comprises a sound absorbing sheet (401), a through hole (402), a first connecting plate (403), a second connecting plate (404) and a fixing screw (405); the sound absorbing sheet (401) is arranged on one side of the air outlet (107); one end of the sound absorbing sheet (401) is provided with a through hole (402); the first connecting plate (403) is installed at the top or bottom of the sound absorbing sheet (401); the second connecting plate (404) is installed at the top and bottom of the air outlet (107); and a fixing screw (405) passes through the middle position of the first connecting plate (403).

6. A low-noise pneumatic angle grinder according to claim 5, characterized in that: A clamping block is provided at one end of the sound absorbing sheet (401), a clamping groove is provided at one end of the air outlet (107), and the sound absorbing sheet (401) and the air outlet (107) form a clamping structure.

7. A low-noise pneumatic angle grinder according to claim 5, characterized in that: External threads are evenly arranged on the outer wall of the fixing screw (405), and internal threads matching the external threads are evenly arranged on the inner wall of the second connecting plate (404). The fixing screw (405) and the second connecting plate (404) are connected by threads.

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