TWI781799B - Pneumatic tool - Google Patents

Abstract

A pneumatic tool is provided, including a first member, a second member, a pivot unit and an addition unit. The first member has a first air passage and at least one outer through hole. The first member extends along an assembly direction. The at least one outer through hole which is disposed on a surface of the first member is communicated with the first air passage. The second member has a second air passage which extends along the assembly direction. The pivot unit is connected with the first member and a second member in the assembly direction. The pivot unit has a communication channel, at least one first communication opening and a second communication opening. The second communication opening is communicated with the second air passage. The addition unit is detachably assembled on the first member. The addition unit has at least one guiding passage. The guiding passage is adapted for being communicated with the at least one outer through hole and the at least one first communication opening.

Description

air tool

The present invention relates to pneumatic tools.

Pneumatic tools can also be called pneumatic tools, which use high-pressure gas to drive the rotor in the cylinder to rotate, and then drive the tool to rotate through the drive head. They are often used for processing operations such as turning screws, grinding and polishing, drilling, and air sawing; among them, The use of high-pressure gas as a power source has the advantages of being environmentally friendly, non-polluting, and easy to obtain, so it is widely loved by people in this field.

In actual use, the user often encounters an environment with obstacles or a situation where the object to be driven is located at a bend. In view of this, the industry has developed a pivotable pneumatic tool, such as the pneumatic tool of Taiwan Patent I711511 This is the case.

However, the internal gas flow path of the pneumatic tool of the I711511 patent is quite complicated, and the processing requirements are opposite to the use requirements. The opening is blocked, as shown in Figure 3 and Figure 6 of Patent No. I711511; and, the rotating shaft of Patent No. I711511 is in order to cooperate with the complex gas flow passage, so it is necessary to carry out various processing on the rotating shaft of small parts, and the precision requirements are very high. High, in vain increased processing difficulty, processing costs and assembly difficulties.

Therefore, it is necessary to provide a novel and progressive pneumatic tool to solve the above-mentioned problems.

The main purpose of the present invention is to provide a pneumatic tool that pivotally connects the first member and the second member through a pivot unit, and cooperates with a detachable additional unit to simplify the airway structure, so that it can pivot with a simple structure .

To achieve the above purpose, the present invention provides a pneumatic tool, including: a first component, a second component, a pivot unit and an additional unit. The first member includes a first air channel and at least one outer through hole, the first air channel extends along the assembly direction, the at least one outer through hole is opened on the surface of the first member transversely to the assembly direction and communicate with the first air passage; the second member includes a second air passage extending along the assembly direction; the pivot unit pivotally connects the first member and the second member along the assembly direction transversely, and the first A member can swing relative to the second member with the pivot unit as an axis, and the pivot unit includes a communication air passage, at least a first communication port and a second communication port, and the second communication port is used for communicate with the second airway; the additional unit is detachably assembled with the first member, the additional unit includes at least one guide channel, and the at least one guide channel is used to communicate with the at least one outer through hole and the at least one first A connected mouth.

The following examples illustrate possible implementations of the present invention, but are not intended to limit the scope of protection of the present invention.

Please refer to FIG. 1 to FIG. 4 , which show an embodiment of the present invention. The pneumatic tool of the present invention includes: a first component 1 , a second component 2 , a pivot unit 3 and an additional unit 4 .

The first component 1 includes a first air passage 11 and at least one outer through hole 12, the first air passage 11 extends along the assembly direction 5, and the at least one outer through hole 12 is opened in the direction transverse to the assembly direction 5. The surface of the first member 1 communicates with the first air channel 11 . The second component 2 includes a second air channel 21 extending along the assembly direction 5 . The pivot unit 3 pivotally connects the first member 1 and the second member 2 along the transverse direction 5 of the assembly, and then the first member 1 can swing relative to the second member 2 on the axis of the pivot unit 3 ; wherein The pivot unit 3 includes a communicating air channel 31 , at least one first communicating port 32 and a second communicating port 33 , and the second communicating port 33 is used to communicate with the second air channel 21 .

The first component 1, the second component 2 and the pivot unit 3 constitute a main component that can pivot relative to each other. The additional unit 4 is detachably assembled with the first component 1. The additional unit 4 includes at least A guide channel 41 , the at least one guide channel 41 is used to communicate with the at least one outer through hole 12 and the at least one first communication port 32 . Obviously, the at least one guide channel 41 is an outer guide channel 41 constructed outside the main component, so as to guide the airflow out of the main component laterally and then return to the main component. The advantage of this configuration is that it can simplify the gas flow path and facilitate Parts assembly makes the overall structure simple. Moreover, after detaching the additional unit 4, the first air passage 11, the second air passage 21 and the communicating air passage 31 can be inspected or cleaned without completely detaching the main component.

Specifically, the first member 1 is a handle, the second member 2 is a driving head, and the first member 1 further includes a first main body 13 and two pivot ears 14, and the two pivot ears 14 are along the The assembly direction 5 extends to the first main body 13, and the two pivot ears 14 are arranged at intervals perpendicular to the assembly direction 5 to define an insertion space 15, and the first member 1 is shaped like a tuning fork. The air channel 11 and the at least one outer through hole 12 are disposed on the first body 13 and do not extend to the two pivot ears 14 . The second member 2 further includes a second main body 22 and an insertion portion 23 , the insertion portion 23 extends to the second main body 22 along the assembly direction 5 , and the second air passage 21 extends to the second main body 22 and the insertion part 23, the insertion part 23 is inserted into the insertion space 15, the pivot unit 3 passes through the two pivot ears 14 and the insertion part 23 to connect the first member 1 and the second Component 2.

More specifically, each pivot ear 14 is provided with a first pivot hole 16, and the insertion portion 23 is provided with a second pivot hole 24, and the pivot unit 3 passes through the first pivot hole 14 of each pivot ear 14. Pivot hole 16 and the second pivot hole 24 of this insertion portion 23; Wherein, the aperture of this first pivot hole 16 is larger than the aperture of this at least one outer through hole 12, in order that this pivot unit 3 has bigger radial direction Due to its size, it can have strong structural rigidity to withstand external forces, and can have a large cross-sectional area for gas to flow in.

In this embodiment, the pivot unit 3 includes a communication shaft 34 and a stopper 36, the communication shaft 34 is provided with the communication air channel 31, the at least one first communication port 32 and the second communication port 33, one end of the connecting shaft 34 protrudes radially to have an abutment portion 341, the other end of the connecting shaft 34 is provided with a joint portion 35, and the other end of the connecting shaft 34 passes through the first member 1 and the second member 1. The second component 2 is connected with the stopper 36, and then the abutting portion 341 and the stopper 36 sandwich the first component 1 and the second component 2; wherein, the joint portion 35 is a threaded portion , the stopper 36 is a nut.

Preferably, the pivot unit 3 further includes a plurality of second anti-leakage parts 37 , and the plurality of second anti-leakage parts 37 are sleeved on the connecting shaft 34 at intervals.

Of course, the pivot unit 3 is not limited to the above, and can have various forms. Please refer to another embodiment shown in FIG. 5, the pivot unit 3A includes a first shaft 38 and a The second shaft body 39, the first shaft body 38 and the second shaft body 39 are pivotally connected to the first member 1A and the second member 2A respectively, and the first shaft body 38 is provided with a communicating air passage 31A, at least one first connecting The opening 32A and the second communication port 33A, the second shaft body 39 does not communicate with the second air channel 21A; wherein, the opening direction of the second communication port 33A is equal to the axial direction of the first shaft body 38 .

Please refer to the present embodiment of Fig. 1 to Fig. 4 again, the opening direction of the at least one first communicating port 32 is equal to the axial direction of the pivot unit 3, so as to facilitate rapid drilling, wherein the at least one first communication port 32 A communication port 32 is a structure that must be produced when processing the communication air channel 31. This method of using the structure that must be produced in the process of processing as the connection of the air flow channel can effectively simplify the assembly process and reduce the number of components. The situation where the hole must be drilled and then plugged. More specifically, the at least one guide passage 41 extends along the assembly direction 5, and the extension direction of the at least one outer through hole 12 is parallel to the extension direction of the communicating air passage 31; The extension of the through hole 12, the guiding channel 41 and the connecting air channel 31 is connected in a "ㄇ" shape, and in the assembly direction 5, the length of the guiding channel 41 is the same as that of the first communicating port 32. The caliber ratio is greater than 1.5.

In this embodiment, the number of the at least one first communication port 32 is one, the number of the at least one outer through hole 12 is one, the first communication port 32 and the outer through hole 12 are located on the same side, The additional unit 4 includes a cover body 42, the cover body 42 covers the first communicating port 32 and the outer through hole 12 and is positioned on the first member 1, the cover body 42 is bounded by the first member 1 Out of the guide channel 41 ; wherein, the cover body 42 is located at one of the pivot ears 14 , and the joint portion 35 is located at the other pivot ear 14 .

Preferably, the additional unit 4 further includes a first anti-leakage piece 43 , and the first anti-leakage piece 43 is sandwiched between the cover body 42 and the first member 1 .

1, 1A: the first component 11: First airway 12: External through hole 13: The first subject 14: hub ear 15: Insertion space 16: The first pivot hole 2, 2A: Second component 21, 21A: Second airway 22: Second subject 23: socket part 24: Second pivot hole 3, 3A: pivot unit 31, 31A: connected airway 32, 32A: the first communication port 33, 33A: Second communication port 34: connecting shaft 341: abutting part 35: junction 36: stopper 37: The second leak-proof part 38: The first axis body 39: Second axis body 4: Additional unit 41: Guidance channel 42: Cover body 43: The first leak-proof part 5: Assembling direction

Fig. 1 is a perspective view of an embodiment of the present invention. Fig. 2 is an exploded view of an embodiment of the present invention. Fig. 3 is a partial sectional view of an embodiment of the present invention. Fig. 4 is a schematic diagram of the operation of an embodiment of the present invention. Fig. 5 is a partial sectional view of another embodiment of the present invention.

11: First airway

12: External through hole

21: Second airway

3: pivot unit

31: connect the airway

32: The first connection port

33: The second connection port

4: Additional unit

41: Guidance channel

Claims (10)

A pneumatic tool comprising: A first component includes a first air channel and at least one outer through hole, the first air channel extends along the assembly direction, and the at least one outer through hole is opened on the surface of the first component along the direction transverse to the assembly direction and communicate with the first airway; a second component including a second air channel extending along the assembly direction; A pivot unit pivotally connects the first member and the second member along the transverse direction of the assembly, and then the first member can swing relative to the second member on the axis of the pivot unit, including a communicating an airway, at least one first communication port and a second communication port, the second communication port is used to communicate with the second airway; An additional unit is used to detachably assemble the first component, and includes at least one guiding channel for communicating with the at least one outer through hole and the at least one first communicating port. The pneumatic tool according to claim 1, wherein the first member further includes a first body and two pivot ears, the two pivot ears extend to the first body along the assembly direction, and the two pivot ears are perpendicular to the The assembly direction is arranged at intervals to define an insertion space, the first air channel and the at least one outer through hole are arranged on the first body and do not extend to the two pivot ears; the second component also includes a second The main body and an insertion portion, the insertion portion extends to the second body along the assembly direction, the second air passage extends to the second body and the insertion portion, the insertion portion is inserted into the insertion space , the pivot unit passes through the two pivot ears and the insertion portion to connect the first member and the second member. The pneumatic tool as described in claim 2, wherein each of the pivot ears is provided with a first pivot hole, the insertion part is provided with a second pivot hole, and the pivot unit is passed through the first pivot ear of each of the pivot ears The pivot hole and the second pivot hole of the insertion portion; wherein, the diameter of the first pivot hole is larger than the diameter of the at least one outer through hole. The pneumatic tool as claimed in claim 1, wherein the pivot unit includes a communication shaft and a stopper, the communication shaft is provided with the communication air passage, the at least one first communication port and the second communication port, One end of the connecting shaft protrudes radially with an abutting portion, the other end of the connecting shaft is provided with a joint portion, and the other end of the connecting shaft passes through the first component and the second component to meet the stopper connected, and furthermore, the abutting portion and the stopper sandwich the first component and the second component. The pneumatic tool as claimed in item 1, wherein the at least one guide channel extends along the assembly direction, and the extension direction of the at least one outer through hole is parallel to the extension direction of the communicating air passage; The extension of the outer through hole, the guiding passage and the connecting air passage are connected in a "ㄇ" shape. The pneumatic tool according to claim 1, wherein the number of the at least one first communication port is one, the number of the at least one outer through hole is one, and the first communication port and the outer through hole are located on the same side , the additional unit includes a cover body, the cover body covers the first communication port and the outer through hole and is positioned on the first component, the cover body and the first component define the guide channel. The pneumatic tool as claimed in claim 6, wherein the additional unit further includes a first anti-leakage part, and the first anti-leakage part is sandwiched between the cover body and the first member. The pneumatic tool according to any one of claims 1 to 7, wherein the opening direction of the at least one first communicating port is equal to the axial direction of the pivot unit. The pneumatic tool according to claim 1, wherein the pivot unit includes a first shaft body and a second shaft body arranged coaxially, and the first shaft body and the second shaft body respectively pivot the first member and the second member, the first shaft body is provided with the communicating air channel, the at least one first communicating port and the second communicating port, and the second shaft body is not connected to the second air channel; wherein, The opening direction of the second communicating port is equal to the axial direction of the first shaft body. The pneumatic tool as claimed in claim 3, wherein the pivot unit includes a communication shaft and a stopper, the communication shaft is provided with the communication air passage, the at least one first communication port and the second communication port, One end of the connecting shaft protrudes radially with an abutting portion, the other end of the connecting shaft is provided with a joint portion, and the other end of the connecting shaft passes through the first component and the second component to meet the stopper connected, and then the abutting portion and the stopper clamp the first member and the second member; the at least one guide channel extends along the assembly direction, and the extension direction of the at least one outer through hole is Parallel to the extension direction of the communicating airway; wherein, the extension of the connected one of the outer through hole, one of the guiding channels and the communicating airway is connected in a "ㄇ" shape; the number of the at least one first communicating port is One, the number of the at least one outer through hole is one, the first communication port and the outer through hole are located on the same side, the additional unit includes a cover, and the cover covers the first communication port and the outer through hole The outer through hole is positioned on the first member, and the cover body and the first member define the guide channel; the additional unit further includes a first leak-proof piece, and the first leak-proof piece is clamped on the cover Between the body and the first component; the opening direction of the at least one first communication port is equal to the axial direction of the pivot unit; the first component is a handle, and the second component is a driving head; The cover body is located at one pivot ear, and the joint portion is located at the other pivot ear; the pivot unit further includes a plurality of second leak-proof parts, and the plurality of second leak-proof parts are sheathed on the connecting shaft at intervals; The joint part is a threaded part, and the stopper is a nut; in the assembly direction, the ratio of the length of the guide channel to the diameter of the first communicating port is greater than 1.5; the first member is in the shape of a tuning fork .

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