CN201800022U - Pneumatic tool - Google Patents

Abstract

A pneumatic tool, comprising: the high-pressure gas exhausting device comprises a shell, a control valve group, a pneumatic motor, a shielding body and a tool group, wherein the shielding body is arranged above the shell and mutually encloses with the shell to form an exhaust groove, the exhaust groove is communicated with a motor containing chamber, one end of the shielding body is provided with an exhaust port communicated with the exhaust groove, and the high-pressure gas exhausted from the shell can be guided to a preset direction to be exhausted to an external space through the shielding body above the shell. The utility model has the advantages that: the air outlet of the pneumatic motor can be quickly discharged outwards, and air blocking is avoided, so that the working efficiency of the pneumatic motor or the pneumatic tool is improved.

Description

a pneumatic tool

technical field

The utility model relates to a pneumatic tool, in particular to a pneumatic tool which can improve work efficiency.

Background technique

Pneumatic tools are used to connect high-pressure gas sources, use high-pressure gas to drive the air motor to rotate, and further drive the installed tools (such as pneumatic percussion tools) to rotate. Among them, after the high-pressure gas drives the air motor to rotate, it needs to be discharged from the air motor in order to Run the air motor continuously. Among the existing pneumatic tools, you can refer to the Taiwan Patent No. I259865. The high-pressure gas source is often connected to the handle part of the pneumatic tool, and after the high-pressure gas is used to drive the air motor, the gas discharged from the air motor is guided to the After the grip, the gas is discharged outwards, which makes the gas flow path inside the pneumatic tool more complicated.

The movement of fluid in the flow channel will cause different sizes of pipeline loss due to the different shape of the flow channel, which consumes the energy of high-pressure gas. The gas flow channel inside the existing pneumatic tools is complex, which not only increases the difficulty of processing, but also consumes high-pressure gas more easily. The energy, or block the gas from being discharged, reduce the energy obtained by the air motor, and reduce the working efficiency of the air tool.

Utility model content

The purpose of the utility model is to provide a pneumatic tool, which can quickly discharge the gas discharged by the pneumatic motor to avoid blocking the gas and improve the working efficiency of the pneumatic motor or pneumatic tool.

In order to achieve the above object, the utility model adopts the following technical solutions:

A pneumatic tool comprising:

A housing, which encloses an air intake slot, a motor chamber, and a tool chamber, the motor chamber is connected to the air intake slot and the tool chamber;

A control valve group, located in the air inlet slot, the control valve group is used to connect a high-pressure gas source, and the control valve group is used to control the high-pressure gas to enter the air inlet slot from the high-pressure gas source;

An air motor is accommodated in the motor housing, the air motor includes a rotatable spindle, defines an axial direction with the spindle, the spindle can rotate around the axial direction, and the air motor starts from the The intake slot receives high-pressure gas, and the air motor receives high-pressure gas to rotate the mandrel and output the high-pressure gas to the exhaust slot;

A shielding body is arranged above the housing and forms an exhaust groove with the housing. The exhaust groove communicates with the motor chamber. One end of the shielding body is formed with a vent communicating with the exhaust groove. The exhaust port allows the high-pressure gas discharged from the casing to be guided to a predetermined direction by the shielding body above the casing and discharged to the external space; and

A tool set is rotatably accommodated in the tool chamber, and the tool set is in a rotational interlocking relationship with the spindle.

A vertical direction is defined by the connection line between the air intake slot and the exhaust slot, and an exhaust device is provided at the exhaust port of the shielding body. The exhaust device includes a wind guide cover, which is installed on the Exhaust port, the air guide cover is formed with at least one opening, the opening communicates between the exhaust groove and the external space, the opening defines an opening direction, and the opening direction is not parallel to the vertical direction and the axial direction .

The exhaust device further includes a sound insulation part, the sound insulation part is accommodated in the exhaust slot, and the sound insulation part is separated between the air motor and the air guide cover.

The wind guide cover includes a cover plate and at least one baffle plate, the baffle plate extends arcuately from the cover plate, and the baffle plate and the cover plate enclose the opening.

The wind guide cover includes at least two baffles, one of which encloses the opening with the cover, and the other baffle and the cover encloses another opening, and the opening directions of the two openings are opposite to each other.

The opening direction is perpendicular to the vertical direction and the axial direction at the same time.

The beneficial effect of the utility model is: the gas discharged from the air motor can be quickly discharged to the outside to avoid blocking the gas, thereby improving the working efficiency of the air motor or the air tool.

Below by accompanying drawing, the utility model will be further described.

Description of drawings

Fig. 1 is a perspective view of the utility model.

Fig. 2 is a partial sectional view of the utility model.

Fig. 3 is a partial exploded view of the utility model.

Fig. 3A is a perspective view of another angle of view of the sound insulation part of the present invention.

Fig. 3B is a partially enlarged view of the wind guide cover of the present invention.

Fig. 4 is a partial sectional view along line A-A of Fig. 1 .

Fig. 5 is a B-B sectional view of Fig. 1 .

[Description of main component labels]

1: Housing 32: Cylinder

11: The first shell 321: Exhaust hole

12: Second shell 33: Blade

121: Shelter 4: Exhaust device

13: Air intake slot 41: Air guide cover

14: Motor chamber 411: Opening

15: Tool compartment 412: Cover plate

16: exhaust groove 413: baffle

17: Exhaust port 42: Sound insulation

2: Control valve group 43: Screw

21: Trigger group 5: Tool set

22: Flow control valve 51: Tool head

31: mandrel

Detailed ways

The following examples illustrate possible implementation forms of the present utility model only, but are not intended to limit the protection scope of the claims of the present utility model, and are described in advance.

Please refer to FIG. 1 to FIG. 3 , the utility model provides a pneumatic tool, which includes a housing 1 , a control valve group 2 , an air motor, an exhaust device 4 and a tool group 5 .

The housing 1 can be formed by combining a first shell 11 and a second shell 12, so that the shell 1 encloses an air inlet slot 13, a motor chamber 14, a tool chamber 15, an exhaust groove 16 and An exhaust port 17 is used for installing other parts in the utility model, wherein the motor chamber 14 is connected to the air inlet groove 13 and the tool chamber 15, and the exhaust groove 16 is provided by a second The shielding body 121 above the casing is surrounded by the second casing, and the exhaust groove 16 communicates with the motor chamber 14. More specifically, the exhaust groove 16 is located at the motor chamber 14 away from the inlet. On one side of the air groove 13, the shielding body 121 forms an open exhaust port 17 towards the direction of the first shell, and the exhaust port 17 just communicates with the exhaust groove 16, and the exhaust groove 16 is connected with the air inlet The connecting line between the slots 13 defines a vertical direction.

The control valve group 2 is arranged in the air inlet groove 13, and the control valve group 2 can be connected with a high-pressure gas source, and the control valve group 2 can control the high-pressure gas to enter the air inlet groove 13 from the high-pressure gas source, wherein, The control valve group 2 may include a trigger group 21 and a flow control valve 22 for the user to control.

The air motor is accommodated in the motor chamber 14 and is fixed to the casing 1. The air motor has a rotatable spindle 31 defining an axial direction with the spindle 31. The spindle 31 can rotate around It rotates in the axial direction, and the air motor can receive the input high-pressure gas from the air inlet groove 13, and drive the spindle 31 to rotate with the high-pressure gas, and the air motor can output the high-pressure gas to the exhaust groove, wherein the air motor may include There is a cylinder 32 and several blades 33 provided for the axis of the spindle 31, so as to drive the spindle 31 to rotate. In this embodiment, the cylinder is provided with several exhaust holes 321 on the side away from the air intake groove 13. The gas can be discharged to the exhaust groove 16 through the exhaust hole 321. In other possible embodiments of the utility model, it is also possible to surround one to several exhaust holes at the front end or rear end of the cylinder 32, and make the exhaust holes Connected with the exhaust groove.

The exhaust device 4 is used to discharge the high-pressure gas from the exhaust groove 16 to the external space along a predetermined direction. More specifically, the exhaust device 4 is installed above the second casing corresponding to the exhaust hole 321 After the air motor discharges the gas to the exhaust groove 16, the gas is further shielded by the shielding body 121 above the second casing, and then guided to the front (direction of the first casing) to the exhaust port 17, and then passed through the exhaust port provided on the exhaust port. The exhaust device 4 at 17 discharges to the outside of the housing 1 , wherein the exhaust device 4 may include a wind guide 41 and a sound insulation 42 . The air guide cover 41 can be fixed on the casing 1 by several screws 43 and cover the exhaust port 17. As shown in FIG. Between the exhaust groove 16 and the external space outside the casing 1, the openings 411 each define an opening direction, and the opening direction of each opening 411 is not parallel to the vertical direction and the axial direction at the same time, preferably The opening direction of each opening 411 is perpendicular to the vertical direction and the axial direction. More specifically, please refer to FIG. 3 and FIG. Each of the baffles 413 is arc-shaped extending from the cover 412, and each of the baffles 413 and the cover 412 encloses an opening 411. A part of the openings 411 faces to the left, and the other part faces to the right. side, so that at least two of the openings are in opposite directions. In other possible embodiments of the present utility model, it is also possible to include only two baffles 413 in the air guide cover 41, so that the air guide cover 41 forms two openings in opposite directions, or it is also possible to include only in the air guide cover There is a baffle 413, and only one opening is formed.

The sound insulation member 42 has the effect of isolating or absorbing noise. As shown in FIG. 3A, it can actually be made of porous material or other foaming materials. . The sound insulator 42 is accommodated in the exhaust groove 16, and is blocked between the air motor and the air guide cover 41. Preferably, the sound insulator 42 is adjacent to the air guide cover 41, and the air guide cover 41 can be used. Screws 43 fix the sound insulator 42 , and the sound insulator 42 blocks or reduces the sound volume transmitted from the exhaust slot 16 to the air guide cover 41 , thereby reducing the amount of noise transmitted to the surrounding space through the air guide cover 41 .

The tool set 5 is accommodated in the tool chamber 15 and can rotate relative to the housing 1. The tool set 5 can have a tool head 51 protruding from the housing 1 for connecting the tool head 51. Or snap to a workpiece or tool. The tool set 5 engages with the mandrel 31 to form a rotational interlocking relationship with the mandrel 31 . In other possible embodiments of the present utility model, the tool set can also be replaced with other forms of tool sets for driving and rotating.

For this, please refer to Fig. 2, Fig. 4 and Fig. 5. The utility model forms the exhaust groove 16 on the upper side of the housing 1. After the high-pressure gas enters the air inlet groove 13 from the bottom, it flows upward to the air motor to drive the pneumatic motor. The motor runs, and then enters the exhaust groove 16 from the exhaust hole 321 on the top, and can be immediately discharged outside through the wind guide cover 41, so that the utility model simplifies the overall gas flow path, which is not only easy to produce, but also reduces the pipeline of high-pressure gas. Road loss, or prevent the gas from blocking the rear gas discharge in the exhaust groove 16, and improve the working efficiency of the air motor and the overall air tool. In addition, the utility model can use the wind guide cover 41 to guide the direction of the gas after it is discharged, so that the discharged gas is discharged to the left and right sides, which can prevent the gas from directly ejecting forward and hitting the workpiece, and raise the surrounding dust, or can avoid The gas is ejected upwards to contact the user, thus providing excellent use effect.

Claims (6)

1. A pneumatic tool, characterized in that it comprises: A housing, which encloses an air intake slot, a motor chamber, and a tool chamber, the motor chamber is connected to the air intake slot and the tool chamber; A control valve group, located in the air inlet slot, the control valve group is used to connect a high-pressure gas source, and the control valve group is used to control the high-pressure gas to enter the air inlet slot from the high-pressure gas source; An air motor is accommodated in the motor housing, the air motor includes a rotatable spindle, defines an axial direction with the spindle, the spindle can rotate around the axial direction, and the air motor starts from the The intake slot receives high-pressure gas, and the air motor receives high-pressure gas to rotate the mandrel and output the high-pressure gas to the exhaust slot; A shielding body is arranged above the housing and forms an exhaust groove with the housing. The exhaust groove communicates with the motor chamber. One end of the shielding body is formed with a vent communicating with the exhaust groove. The exhaust port allows the high-pressure gas discharged from the casing to be guided to a predetermined direction by the shielding body above the casing and discharged to the external space; and A tool set is rotatably accommodated in the tool chamber, and the tool set is in a rotational interlocking relationship with the spindle. 2. A kind of pneumatic tool as claimed in claim 1, characterized in that, a vertical direction is defined by the connection line between the air inlet groove and the exhaust groove, and a row of Air device, the exhaust device includes a wind guide cover installed on the exhaust port, the wind guide cover is formed with at least one opening, the opening communicates between the exhaust groove and the external space, and the opening defines a The opening direction, the opening direction is not parallel to the vertical direction and the axial direction at the same time. 3. A pneumatic tool as claimed in claim 2, wherein the exhaust device further comprises a sound insulation member, the sound insulation member is accommodated in the exhaust groove, and the sound insulation member is separated from the air motor and the between the windshields. 4. A pneumatic tool as claimed in claim 2, wherein the air guide cover comprises a cover plate and at least one baffle plate, the baffle plate extends arcuately from the cover plate, the baffle plate and the cover A plate encloses the opening. 5. A pneumatic tool as claimed in claim 4, wherein the air guide cover comprises at least two baffles, one of which surrounds the opening with the cover, and the other baffle and the cover The plate encloses another opening, and the opening directions of the two openings are opposite to each other. 6. The pneumatic tool according to any one of claims 2 to 5, wherein the opening direction is perpendicular to the vertical direction and the axial direction at the same time.

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