TWI692392B - Pneumatic tool - Google Patents

Abstract

A pneumatic tool is provided, including a work head assembly and a handle assembly. The handle assembly is selectively rotatable disposed on the work head assembly.

Description

Pneumatic tools

The invention relates to hand tools, in particular to a pneumatic tool.

In the field of processing and assembly, a variety of specially designed hand tools are often used to assist operations, such as grinding and polishing operations by rotating tools, and rotating fasteners (such as nuts and screws) by rotating tools. Rotating tools can be roughly divided into electric tools and pneumatic tools according to the different power sources. The power of pneumatic tools comes from compressed air, which has the advantage of not polluting the environment and can be used in harsh environments such as flammability and humidity. It is widely loved by the public, such as the pneumatic tools disclosed by TWM565633, TWD192119 and TWM268152.

However, in such conventional pneumatic tools, because the working head set and the components of the grip assembly are kept in a fixed relative position, the user often fails to use a proper operating angle due to the narrow environment and the obstacles. Pressing a switch (such as a trigger) that operates a pneumatic tool causes inconvenient processing operations, low efficiency, and increased difficulty in construction. There are shortcomings that need to be improved.

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

The main purpose of the present invention is to provide a pneumatic tool, through which the grip of the grip assembly can rotate relative to the working head assembly, so that the user can change the position of the component on the grip (such as the position of the trigger) according to the needs of the use environment ) To operate at a more appropriate angle.

To achieve the above object, the present invention provides a pneumatic tool, including: a working head assembly and a grip assembly. The working head assembly includes a head and a shaft connected to each other, and a driving head is provided on the head; the handle assembly includes a grip and a connecting piece, the grip is for receiving a gas, and the connecting piece Connected to the shaft body through the grip, the grip can be selectively moved along a connecting member to a first position and a second position, wherein, when the grip is at the first position, the The grip member and the shaft body are combined with each other in the same rotation relationship. When the grip member is in the second position, the grip member is disengaged from the shaft body, and the grip member can rotate relative to the shaft body with the connecting member as an axis.

The following merely illustrates the possible implementation forms of the present invention with examples, but it is not intended to limit the scope of the invention to be protected, and will be described first.

Please refer to FIGS. 1 to 7, which show an embodiment of the present invention. The pneumatic tool of the present invention includes a working head assembly 1 and a grip assembly 2. The working head assembly 1 includes a head 11 and a shaft body 12 connected to each other. A driving head 13 is provided on the head 11. The driving head 13 can be used to drive a sleeve or other tools to rotate. The handle assembly 2 includes a handle 21 and a connecting piece 24 for receiving a gas. The connecting piece 24 is connected to the shaft body 12 through the handle 21 and the holding piece 21 can Selectively move to a first position and a second position along the connecting member 24, wherein, when the holding member 21 is at the first position, the holding member 21 and the shaft body 12 are combined with each other to form the same rotation relationship When the grip 21 is in the second position, the grip 21 is disengaged from the shaft 12 and the grip 21 can rotate relative to the shaft 12 with the connecting member 24 as an axis.

In this embodiment, the shaft 12, the connecting member 24 and the grip 21 are arranged coaxially, and the extending direction of the driving head 13 is perpendicular to the extending direction of the connecting member 24.

The user can change the position of the component provided on the grip 21 by rotating the grip 21 relative to the working head assembly 1, thereby avoiding obstacles or moving to a more convenient place, so that the user can Operate the pneumatic tool in an appropriate manner. For example, the handle assembly 2 further includes a trigger 26, which can be pivotally positioned on the grip 21, and the position of the trigger 26 can be changed to an open space by turning the grip 21 This allows the user to smoothly press the trigger 26 to activate the pneumatic tool.

Before rotating the grip 21 relative to the working head assembly 1, the user must first pull the grip 21 to move it from the first position to the second position along the connecting member 24; The grip 21 rotates to the desired position with the connecting member 24 as the axis; finally, the grip 21 is moved back to the first position along the connecting member 24.

As can be seen from the above, in the entire operation, the grip 21 needs to perform two different dimensional movements in sequence: axial displacement and rotation. In this way, it can effectively avoid unintended rotation of the grip 21 caused by accidental touch That happened. The grip 21 is axially inserted and removed, so as to quickly switch between the first position and the second position, and the operation is very intuitive and the action is simple.

One of the shaft 12 and the grip 21 is provided with a plug interface 22 and the other is provided with a plug portion 16. When the grip 21 is in the first position, the plug portion 16 is plugged into the plug The interface 22 connects the shaft 12 and the grip 21 to each other. The outer contour of the insertion portion 16 is a non-circular outline, and the insertion portion 16 includes a base 161 and a plurality of convex portions 162 extending radially from the base 161. The plurality of convex portions 162 are inserted The axis of the portion 16 is arranged at an equal angle, and the contour of the socket 22 corresponds to the outer contour of the socket 16.

In this embodiment, the shaft 12 is provided with the insertion portion 16, the grip 21 is provided with the insertion interface 22; and, the number of the plurality of convex portions 162 is four, and each of the convex portions 162 is elongated And the plurality of convex portions 162 are arranged symmetrically at intervals of 90 degrees, so that the grip 21 can rotate based on 90 degrees. More specifically, the grip 21 can be combined with the shaft body 12 after being rotated 90 degrees, 180 degrees, 270 degrees, and 360 degrees relative to the working head assembly 1. It can be understood that the greater the number of the plurality of convex portions 162, the more the grip 21 can follow the rotation with a smaller angle as the base.

Preferably, the handle assembly 2 further includes an elastic member 23, the elastic member 23 is sleeved on the connecting member 24, and one end of the elastic member 23 abuts against the connecting member 24 and the other end of the elastic member 23 Relying on the grip 21, the grip 21 has a tendency to move toward the first position in a normal state. Wherein, the elastic force of the elastic member 23 can resist external force and enhance the stability of the combination of the grip member 21 and the shaft body 12 so that the grip member 21 will not detach from the shaft body 12 due to unexpected external force; and, when the grip After the component 21 is in the second position, the user only needs to release his hand, and the grip 21 can automatically return to the first position, which has the advantage of simplifying the operation.

The shaft body 12 includes a first threaded section 15, the connecting member 24 includes a round rod 241, the round rod 241 includes a second threaded section 242 and a smooth section 243, the connecting member 24 is inserted into the shaft body 12 , The second threaded section 242 is used to be screwed together with the first threaded section 15, the elastic member 23 is sleeved on the smooth section 243, so that the grip 21 can selectively slide on the smooth section 243 shift. In this embodiment, the connecting member 24 further includes a bottom 244, the round rod 241 is integrally connected to the bottom 244, the smooth section 243 is between the bottom 244 and the second threaded section 242, and the bottom 244 is shaped like a disk to actually support the elastic member 23.

However, it is not limited to the above. Considering different use and assembly requirements, as shown in another embodiment of FIG. 8, the round rod 241A and the bottom 244A adopt a separate assembly method, wherein the round rod 241A has a threaded section on the entire outer ring, and the round rod One end of 241A is screwed to the insertion portion 16, the bottom 244A is movably screwed to the other end of the round rod 241A to adjust the elasticity of the elastic member 23.

Please refer to FIGS. 1-7 again. Preferably, a leakage stopper 25 is provided on the outer wall of the bottom 244 and abuts against the inner wall of the gripper 21 to block the gas entering the gripper 21 from The space flowing between the connecting member 24 and the grip member 21 through the assembly gap interferes with the operation of the elastic member 23.

It is worth mentioning that the pneumatic tool further includes a positioning component 3, the positioning component 3 includes a first positioning portion and a second positioning portion, the first positioning portion is provided on the working head assembly 1, the second positioning The first positioning portion and the second positioning portion are externally operated and can be selectively combined and positioned with each other, so that the grip 21 is maintained at the same position relative to the shaft 12 (such as the The first position), thereby greatly improving the stability of the combination of the grip 21 and the shaft 12.

Further, the first positioning part is a kit 31, and the second positioning part is a positioning screw part 32, wherein a coupling screw part 314 is provided on the kit 31, and the coupling screw part 314 is detachably screwed to the Positioning screw 32. Furthermore, the kit 31 is rotatably sleeved and positioned on the shaft body 12, the coupling screw portion 314 is provided on the inner wall of the kit 31, and the positioning screw portion 32 is provided on the outer wall of the grip 21, Therefore, the user can lock/release the grip 21 by rotating the kit 31, and the rotation can greatly reduce the space required by the kit 31 during operation, which is very suitable for operation in a narrow space.

In this embodiment, an air outlet 14 is opened in the shaft body 12, the kit 31 includes a first segment 311 and a second segment 313, and in the opening direction of the air outlet 14, the first segment 311 covers the gas outlet 14, the first section 311 is provided with a plurality of shunt holes 312 for communicating with the gas outlet 14, so as to shunt the gas flowing out of the gas outlet 14, and the second section 313 is provided with the coupling screw portion 314 to be coupled with the positioning screw portion 32. Wherein, the inner diameter of the second segment 313 is larger than the inner diameter of the first segment 311, and an annular space 4 is formed between the second segment 313 and the shaft body 12, and the grip 21 is provided with the positioning A part of the threaded portion 32 can be selectively inserted into the annular space 4.

In addition, the positioning assembly 3 further includes a support member 33 which is sleeved on the shaft body 12 and defines an annular movable space 5 with the shaft body 12, and the first segment 311 can be opposed to the shaft The body 12 is rotatably limited to the movable space 5, thereby achieving the purpose of rotatably positioning the kit 31 on the shaft body 12. More specifically, the support member 33 is positioned on the shaft body 12 by screwing. The support member 33 is located in the annular space 4. When the grip member 21 is located at the first position, the support member 33 blocks止限位住该抱件21。 The stop 21 is held. In this embodiment, the support member 33 is recessed with at least one notch 331, and the at least one notch 331 can be inserted into a tool to be driven to rotate.

In summary, in the pneumatic tool of the present invention, the grip can rotate relative to the head through specific operation steps, so that other components (such as a trigger) provided on the grip can change positions to avoid obstacles in the environment, Facilitate users to operate. Among them, the gripper needs to be axially displaced before relative rotation can be performed, which can prevent the gripper from rotating due to unintended lateral outward force. In addition, the design of the positioning assembly can greatly improve the stability of the coupling between the grip member and the shaft body, so that the grip member can be surely combined with the shaft body into a member when the grip member is in the first position.

1: Working head components

11: head

12: Shaft

13: drive head

14: Outlet

15: first thread segment

16: Dock

161: substrate

162: convex part

2: Grip assembly

21: Grip

22: Plug interface

23: Elastic parts

24: connector

241,241A: Round rod

242: second thread segment

243: Smooth section

244,244A: bottom

25: leakage stop

26: Trigger

3: positioning components

31: Kit

311: The first section

312: shunt hole

313: The second section

314: Joint threaded part

32: Positioning thread

33: Support

331: Notch

4: annular space

5: Event space

FIG. 1 is a perspective view of an embodiment of the invention. Fig. 2 is an exploded view of Fig. 1. FIG. 3 is a cross-sectional view of FIG. 1. FIG. 4 is a schematic diagram of the grip in the second position. 5 to 7 are diagrams illustrating the operation of the grip relative to the head. 8 is an exploded view of another embodiment of the invention.

1: Working head components

2: Grip assembly

11: head

26: Trigger

12: Shaft

31: Kit

13: drive head

Claims (9)

A pneumatic tool includes: a working head assembly, including a head and a shaft body connected to each other, a driving head is provided on the head; a grip assembly, including a grip and a connecting piece, the grip is provided for Receiving a gas to enter, the connecting member is connected to the shaft body through the holding member, the holding member can be selectively moved to a first position and a second position along the connecting member, wherein, when the holding member When in the first position, the grip and the shaft body are combined with each other in the same rotational relationship. When the grip is in the second position, the grip is separated from the shaft body, and the grip can be The shaft rotates relative to the shaft body; a positioning component includes a first positioning portion and a second positioning portion, the first positioning portion is provided on the working head assembly, the second positioning portion is provided on the handle assembly, the The first positioning part and the second positioning part can be selectively combined and positioned with each other for external operation, so that the gripping member is kept at the same position relative to the shaft body. The pneumatic tool according to claim 1, wherein the first positioning part is a kit, and the second positioning part is a positioning screw part, wherein a coupling screw part is provided in the kit, and the coupling screw part is detachably screwed Connect the positioning screw part. The pneumatic tool according to claim 2, wherein the kit is rotatably sleeved and positioned on the shaft body, the coupling screw portion is provided on an inner wall of the kit, and the positioning screw portion is provided on an outer ring wall of the grip. The pneumatic tool according to claim 3, wherein an air outlet is opened in the shaft body, the kit includes a first section and a second section, and the first section cover is provided in the opening direction of the air outlet The air outlet is provided, the first segment is provided with a plurality of diverting holes for communicating with the air outlet, and the second segment is provided with the combined screw portion; wherein, the inner diameter of the second segment is greater than the first The inner diameter of the one-stage portion forms an annular space between the second-stage portion and the shaft body, and the portion of the gripping member provided with the positioning screw portion can be selectively inserted into the annular space. The pneumatic tool according to claim 4, wherein the positioning assembly further includes a support member, the support member is sleeved on the shaft body and defines an annular active space with the shaft body, and the first section can be opposite The rotation limit of the shaft is located in the movable space. The pneumatic tool according to claim 1, wherein one of the shaft body and the grip is provided with a plug interface, and the other is provided with a plug portion, when the grip member is at the first position, the plug portion Inserted into the socket to connect the shaft body and the grip member; wherein, the outer contour of the plug-in portion is a non-circular contour, and the plug-in portion includes a base body and a plurality of radially extending from the base body For the convex portion, the plural convex portions are arranged at equal angles with respect to the axis of the insertion portion, and the contour of the insertion interface corresponds to the contour outside the insertion portion. The pneumatic tool according to any one of claims 1 to 6, wherein the handle assembly further includes an elastic member, the elastic member is sleeved on the connecting member, and one end of the elastic member abuts the connecting member, the The other end of the elastic member abuts the grip member, so that the grip member has a tendency to move toward the first position in a normal state. The pneumatic tool according to claim 7, wherein the shaft body includes a first thread segment, the connecting member includes a round rod, the round rod includes a second thread segment and a smooth segment, the second thread segment is used for Screwed together with the first screw section, the elastic member is sleeved on the smooth section, and the grip member can selectively slide on the smooth section. The pneumatic tool according to claim 5, wherein one of the shaft body and the grip is provided with a plug interface, and the other is provided with a plug portion, when the grip member is in the first position, the plug portion Inserted into the socket to connect the shaft body and the grip member; wherein, the outer contour of the plug-in portion is a non-circular contour, and the plug-in portion includes a base body and a plurality of radially extending from the base body The convex portion, the plural convex portions are arranged at equal angles with respect to the axis of the plug portion, the contour of the plug interface corresponds to the outer contour of the plug portion; the handle assembly further includes an elastic member, and the elastic member is sleeved At the connecting piece, one end of the elastic piece abuts The other ends of the connecting member and the elastic member abut against the gripping member, so that the gripping member has a tendency to move toward the first position normally; the shaft body includes a first threaded section, and the connecting member includes a circle Rod, the round rod includes a second threaded section and a smooth section, the second threaded section is used for screw connection with the first threaded section, the elastic member is sleeved on the smooth section, the gripping member can be selected Sliding on the smooth section; the connecting member further includes a bottom, the round rod is connected to the bottom, the smooth section is between the bottom and the second threaded section, the bottom is disc-shaped, one The leakage stopper is provided on the outer ring wall of the bottom and abuts against the inner wall of the grip; the extension direction of the driving head is perpendicular to the extension direction of the connection; the shaft body, the connection, and the grip are Coaxial configuration; the shaft body is provided with the plug-in part, the grip is provided with the plug-in interface; the number of the plurality of convex parts is four, and they are arranged symmetrically in twos at a 90-degree interval, each convex part is long Bar; the support is positioned on the shaft by screwing, the support is located in the annular space, when the grip is in the first position, the support stops the grip; the grip The assembly further includes a trigger, which is pivotably positioned on the grip; the support is concavely provided with at least one notch, and the at least one notch can be inserted into a tool to be driven to rotate.

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