TW201350289A - Dedicated connecting rod for pneumatic tools - Google Patents

Abstract

The present invention provides a dedicated connecting rod for pneumatic tools, which comprises a shaft rod, a sleeve, a stopper and a detent piece. One end of the shaft rod is provided with a recess, and the other end of the shaft rod can be assembled to a pneumatic tool. The sleeve can be slidably sleeved on the shaft rod, and one end of the sleeve is used for the assembly of a driving head. The sleeve is provided with a radial hole in the radial direction. The stopper is screwed on the shaft rod. The detent piece is accommodated in the radial hole of the sleeve and can be moved in the radial direction. When the stopper is located at a first position, the shaft rod and the sleeve are unable to move relative to each other so that the detent piece can arrest the driving head. When the stopper is located at a second position, the sleeve can make radial movement relative to the shaft rod so that the detent piece abuts against a second contact section of the recess for escaping from the driving head.

Description

Pneumatic tool special post

The present invention primarily discloses a post structure, and more particularly to a drive head that can be securely coupled to a pneumatic tool by the post structure and that allows the drive head to be easily removed and replaced from the pneumatic tool.

Please refer to the Patent Document No. M338139 of the Republic of China Patent No. M338139, which comprises a shaft, a sleeve slidably sleeved on the shaft, a ball and a spring, the shaft comprising a a first end for assembling on the pneumatic tool and a second end having a recess, the sleeve having an end portion for the drive head to be assembled and having a radial hole in the sleeve, the ball being in the radial direction The shaft is radially displaced and axially displaceably received within the recess of the shaft to engage the shaft with the sleeve, the spring being assembled in the sleeve and biasing the sleeve toward the shaft The second end of the recess includes a first shallower contact section for receiving the ball and causing the ball to protrude from the sleeve to be coupled to the driving head, the recess comprising a second deeper contact a segment for receiving the ball and preventing the ball from protruding from the sleeve, so that the drive head is separated from the quick release joint; wherein the sleeve is axially opposite the shaft along the shaft Moving between a first position biased by the spring and a second position compressing the spring, when the sleeve is moved to In the first position, the ball is located in the first contact portion of the recess and an outer portion of the ball protrudes from the radial hole such that the outer portion is incorporated in the groove of the driving head; When the sleeve is moved to the second position, the ball is located at the second contact portion of the recess and is not convex The radial hole is made such that the ball is no longer combined with the groove of the driving head, and the user can remove the driving head.

However, when the quick-release joint structure described above is used for a pneumatic tool, the following defects are caused: since the pneumatic tool uses a compressed gas as a power source, vibration is inevitably generated when the pneumatic tool is assembled. The vibration phenomenon causes the spring to continuously compress and rebound between the sleeve and the shaft. Once the amplitude of the vibration is too large, the sleeve of the quick-release joint structure is changed to the first position under the operation of the user. The two positions cause the drive head to disengage from the quick release joint structure without warning. Moreover, if the spring is elastically fatigued due to frequent use, the drive head cannot be firmly connected to the quick release joint structure.

In view of the above problems of the prior art, which cannot be effectively solved and overcome, the present applicant has filed this patent application to solve the aforementioned problems.

It is an object of the present invention to provide a pneumatic tool-specific post.

To this end, the present invention provides a pneumatic tool-specific post comprising: a shaft member having a recess at one end thereof, the recess having a first contact segment and a second contact segment, the shaft member The other end can be assembled to a pneumatic tool, the shaft member having an externally threaded portion having a first coupling portion and a second coupling portion; a sleeve member slidably sleeved on the shaft a rod member, one end of which is assembled for a driving head, the sleeve member having a shaft hole through which the shaft member passes, the sleeve member having a radial hole at one end; a stopper , the screw is set on the shaft a threaded portion of the rod, the stopper selectively abutting the sleeve member, the stopper being switchable between the first position and the second position; and a latching member received in the sleeve a radial hole of the member and capable of moving radially relative to the radial hole; the stopper is located at the first position, and the stopper abuts against the sleeve member such that the shaft member and the sleeve member cannot move relative to each other, The latch member abuts against the first contact portion of the recess, the latch member is engageable with the drive head, and the drive head is firmly coupled to the pneumatic tool dedicated post; the stop member is located at the second position The stopper is away from the second end of the sleeve member such that the sleeve member is axially movable relative to the shaft member, the latch member abuts against the second contact portion of the recess, and the latch member is disengaged The drive head enables the drive head to be removed by the pneumatic tool dedicated post.

The main feature of the pneumatic tool-specific post of the present invention is that the internal thread portion of the stopper is screwed to the external thread portion of the shaft member and is switchable between the first position and the second position, so that the driving head can be stabilized. The utility model is integrated with the special pole of the pneumatic tool and can be easily removed by the pneumatic tool special post. Therefore, the pneumatic tool special post does not cause the driving head to be in an unwarranted state due to the vibration phenomenon of the pneumatic tool. Detach the special post for the pneumatic tool.

The secondary feature of the special tool post of the pneumatic tool of the present invention is that the special post of the pneumatic tool does not use the conventional spring element, so there is no shortage of elastic fatigue of the spring, and the use of the special post of the pneumatic tool is greatly improved. life.

Other objects, advantages and novel features of the invention will be apparent from the following The description and related drawings are more apparent.

The technology, means and functions of the present invention are described in detail with reference to the accompanying drawings.

Please refer to FIG. 1 to FIG. 3 , which are a perspective view, an exploded view and a cross-sectional view of a special post for a pneumatic tool of the present invention. The pneumatic tool special post of the present invention comprises a shaft member 10, a sleeve member 20 slidably sleeved on the shaft member 10, a stopper 30 screwed to the shaft member 10, and a latch Item 40.

The opposite ends of the shaft member 10 respectively have a first end 11 and a second end 12 along a first virtual axis A. The first end 11 of the shaft member 10 is provided with a recess 13 and the recess 13 Having a first contact segment 131 adjacent one end surface 111 of the first end 11 of the shaft member 10 and a second contact portion 132 adjacent to the first contact segment 131, the second contact segment 132 is A contact segment 131 extends toward the second end 12 of the shaft member 10, and a vertical distance between the first contact segment 131 and the first virtual axis A defines a first height H1, and the second contact segment 132 The vertical distance between the first virtual axis A defines a second height H2, and the first height H1 is greater than the second height H2, so that a height difference is formed between the first contact segment 131 and the second contact segment 132. The outer surface of the second end 12 of the shaft member 10 is provided with a ring groove 14 for assembling the shaft member 10 to a pneumatic tool (not shown), and the first end 11 and the second end of the shaft member 10 Protruding between 12 Forming a convex portion 15 having a circular cross section, the convex portion 15 having a first contact surface 151 adjacent to the first end 11 of the shaft member 10 and having an outer diameter larger than the outer diameter of the convex portion 15 The outer diameter of the first end 11 of the rod member 10 and the outer diameter of the second end 12 of the shaft member 10, the shaft member 10 is provided with an external thread portion 16 on the outer surface of the convex portion 15, the external thread The portions 16 each have a first joint portion 161 adjacent the first end 11 of the shaft member 10 and a second joint portion 162 adjacent the second end 12 of the shaft member 10 and the external thread portion 16 is different. A first width W1 is defined along the first virtual axis A, and the shaft member 10 protrudes between the convex portion 15 and the first end 11 of the shaft member 10 to form a shoulder portion 17 . The shoulder portion 17 is formed by the convex portion 15 along the extending direction of the first virtual axis A, and the outer diameter of the shoulder portion 17 is larger than the outer diameter of the first end 11 of the shaft member 10 and the shaft member 10 The outer diameter of the second end 12, the outer diameter of the shoulder portion 17 is smaller than the outer diameter of the convex portion 15, and the cross-section of the shoulder portion 17 taken along the vertical direction of the first virtual axis A is substantially square.

The sleeve member 20 is slidably sleeved on the shaft member 10 along the first virtual axis A and includes a first end 21 and a second end 22 for assembling the drive head 50. The sleeve member 20 The second end 22 defines a first stop surface 221, and the sleeve member 20 has a first end 21 and a second end 22 extending through the sleeve member 20 along the extending direction of the first virtual axis A. Providing a shaft hole 23 through which the shaft member 10 passes, the shaft hole 23 forming an enlarged portion 231 along the first virtual axis A and adjacent to the second end 22 of the sleeve member 20, and the enlarged portion 231 has a cross section Rounded, the enlarged portion 231 receives the convex portion 15 of the shaft member 10, and the enlarged portion 231 has a second contact surface 232. A shaft hole 23 along the first virtual axis A and adjacent to the first end 21 of the sleeve member 20 forms a reduced portion 233 and an intermediate portion 234 between the enlarged portion 231 and the reduced portion 233, the shaft hole 23 The reducing portion 233 receives the first end 11 of the shaft member 10, and the cross-section of the intermediate portion 234 of the shaft hole 23 along the vertical direction of the first virtual axis A is square, so that the shaft hole 23 The middle portion 234 receives the shoulder portion 17 of the shaft member 10 and the section of the shoulder portion 17 of the shaft member 23 and the shoulder portion 17 of the shaft member 10 are square, and the shaft member 10 is raised. The structural strength of the engagement with the sleeve member 20 allows the pneumatic tool-specific post to be adapted to higher torque pneumatic tools. The first end 21 of the sleeve member 20 further includes a radial bore 24 in communication with the shaft bore 23, the radial bore 24 being followed by a second virtual axis B extending radially from the first virtual axis A. The extension is formed and the radial bore 24 can be aligned with the recess 13 of the shaft member 10. In this embodiment, the first end 21 of the sleeve member 20 has a quadrangular cross section taken along the vertical direction of the first virtual axis A. The second end 22 of the sleeve member 20 is along the first end. The cross section of the virtual axis A in the vertical direction is circular.

The stopper 30 is annular and is screwed to the external thread portion 16 of the shaft member 10 along the extending direction of the first virtual axis A. The two ends of the stopper 30 have a first end 31 and a second end 32 along the first virtual axis A. The first end 31 of the stopper 30 forms a second stop surface 311. And abutting against the first stop surface 221 of the second end 22 of the sleeve member 20, the stopper 30 defines a second along the first virtual axis A from the first end 31 to the second end 32. a width W2, the second width W2 being smaller than the first width W1, the stopper 30 having one extending along the first virtual axis A The direction is formed through the first end 31 and the second end 32 of the stopper 30 and can provide a sleeve hole 33 through which the shaft member 10 passes. The stopper 30 forms an internal thread on the inner wall surface of the sleeve hole 33. The threaded portion 34 and the external threaded portion 16 of the shaft member 10 are screwed together to move the stopper 30 relative to the shaft member 10 along the first virtual axis A. The stopper 30 The outer surface has an embossed portion 35 to increase the frictional force when the user rotates the stop member 30.

The latching member 40 is received in the radial bore 24 of the sleeve member 20 and is movable relative to the radial bore 24 in the direction in which the second virtual axis B extends and is capable of being along the first virtual axis relative to the shaft member 10 The axis A is moved in the extending direction. In the embodiment, the latching member 40 is a ball, and the end of the radial hole 24 away from the shaft member 10 has a smaller diameter than the latching member 40, so that the card The jaw 40 cannot be disengaged from the radial hole 24 and the outer portion 41 of the latch member 40 can protrude from the radial hole 24, and the latch member 40 can be along the first virtual axis A and the shaft The member 10 is relatively movably received in the recess 13 of the shaft member 10 to couple the shaft member 10 to the sleeve member 20.

In the embodiment, the driving head 50 is a hand tool sleeve, and includes a socket end 51 having a connecting hole 511 and a driving end 52. The connecting hole 511 has a square cross section and is combined with The first end 21 of the sleeve member 20 has a recess 512 around the connecting hole 511.

The stopper 30 is switchable between the first position and the second position. When the stopper 30 is in the first position, the internal thread portion 34 of the stopper 30 is screwed to the external thread of the shaft member 10. The first combining section 161 of the portion 16 The second stop surface 311 of the first end 31 of the movable member 30 abuts against the first stop surface 221 of the second end 22 of the sleeve member 20 such that the shaft member 10 and the sleeve member 20 cannot move relative to each other. The first height H1 of the first contact segment 131 is set to be when the latching member 40 is located at the first contact segment 131 of the recess 13 , the latching member 40 is abutted against the first contact segment 131 of the recess 13 The outer side portion 41 of the latching member 40 may protrude from the radial hole 24 or the outer surface of the first end 21 of the sleeve member 20. The outer side portion 41 of the latching member 40 can be latched to the driving head 50. The recess 512 of the socket end 51 allows the drive head 50 to be firmly coupled to the pneumatic tool-specific post.

Referring to FIG. 4 , the user can clamp the embossing portion 35 of the stopping member 30 and rotate the stopping member 30 so that the stopping member 30 moves relative to the shaft member 10 along the first virtual axis A. The stop 30 is shifted from the first position to the second position. When the stopper 30 is in the second position, the internal thread portion 34 of the stopper 30 is screwed to the second joint portion 162 of the external thread portion 16 of the shaft member 10, and the first end 31 of the stopper 30 is 31. The second stop surface 311 is away from the first stop surface 221 of the second end 22 of the sleeve member 20 .

Referring to FIG. 5 simultaneously, the stopper 30 is located at the second position, because the second stop surface 311 of the first end 31 of the stopper 30 is away from the first stop surface 221 of the second end 22 of the sleeve member 20 The sleeve member 20 is movable relative to the shaft member 10 along the first virtual axis A such that the first contact surface 151 of the protrusion 15 of the shaft member 10 abuts against the shaft hole 23 of the sleeve member 20 The second contact surface 232, the radial hole 24 of the sleeve member 20 drives the latch member 40 to move from the first contact portion 131 of the recess 13 to the second contact portion 132, and the second height H2 of the second contact portion 132 Set when the clip 40 is located in the recess 13 The outer side portion 41 of the latch member 40 does not protrude from the radial hole 24 or the outer surface of the first end 21 of the sleeve member 20 when the second contact portion 132 is formed. The outer portion 41 of the latch member 40 can be disengaged from the recess 512 of the sleeve end 51 of the drive head 50, so that the drive head 50 can be easily removed by the pneumatic tool dedicated post.

As far as the above is concerned, it can be concluded that the pneumatic tool special post of the present invention has the following advantages:

1. The pneumatic tool-specific post of the present invention, wherein the internal thread portion of the stopper is screwed to the external thread portion of the shaft member and is switchable between the first position and the second position, so that the driving head can be stabilized The utility model is integrated with the special pole of the pneumatic tool and can be easily removed by the pneumatic tool special post. Therefore, the pneumatic tool special post does not cause the driving head to be in an unwarranted state due to the vibration phenomenon of the pneumatic tool. Detach the special post for the pneumatic tool.

2. The special post for the pneumatic tool of the present invention does not use the conventional spring element, so there is no shortage of elastic fatigue of the spring, which greatly increases the service life of the special post of the pneumatic tool.

In summary, the special post for the pneumatic tool of the present invention is not found in the previously disclosed technology, so it has the novelty and advancement of the patent, and the use value of the industry; the applicant is in accordance with the provisions of the patent law. File an application for an invention patent.

10‧‧‧ shaft parts

11‧‧‧ first end

111‧‧‧ end face

12‧‧‧ second end

13‧‧‧ recess

131‧‧‧First contact segment

132‧‧‧second contact section

14‧‧‧ Ring groove

15‧‧‧ convex

151‧‧‧ first contact surface

16‧‧‧External thread

161‧‧‧ first joint segment

162‧‧‧Second junction

17‧‧‧ Shoulder

20‧‧‧Sleeve parts

21‧‧‧ first end

22‧‧‧ second end

221‧‧‧First stop surface

23‧‧‧Axis hole

231‧‧‧Expanding Department

232‧‧‧second contact surface

233‧‧‧Reduction

234‧‧‧ middle part

24‧‧‧radial holes

30‧‧‧stops

31‧‧‧ first end

311‧‧‧second stop surface

32‧‧‧second end

33‧‧‧ sets of holes

34‧‧‧Threaded Department

35‧‧‧ embossing department

40‧‧‧ Cards

41‧‧‧Outer part

50‧‧‧ drive head

51‧‧‧ socket

511‧‧‧connection hole

512‧‧‧ Groove

52‧‧‧Driver

A‧‧‧first virtual axis

B‧‧‧second virtual axis

H1‧‧‧ first height

H2‧‧‧second height

W1‧‧‧ first width

W2‧‧‧ second width

Figure 1: The three-dimensional appearance of the special post for the pneumatic tool of the present invention.

Figure 2: An exploded perspective view of a dedicated post for a pneumatic tool of the present invention.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1, showing the stop in the first position and the latching member in the first contact section of the recess.

Figure 4: Continuation of Figure 3, indicating that the stop is in the second position.

Figure 5: Continuation of Figure 4, showing the second contact section of the latch in the recess.

10‧‧‧ shaft parts

11‧‧‧ first end

111‧‧‧ end face

12‧‧‧ second end

13‧‧‧ recess

131‧‧‧First contact segment

132‧‧‧second contact section

14‧‧‧ Ring groove

15‧‧‧ convex

151‧‧‧ first contact surface

16‧‧‧External thread

161‧‧‧ first joint segment

162‧‧‧Second junction

17‧‧‧ Shoulder

20‧‧‧Sleeve parts

21‧‧‧ first end

22‧‧‧ second end

221‧‧‧First stop surface

23‧‧‧Axis hole

231‧‧‧Expanding Department

232‧‧‧second contact surface

233‧‧‧Reduction

234‧‧‧ middle part

24‧‧‧radial holes

30‧‧‧stops

31‧‧‧ first end

311‧‧‧second stop surface

32‧‧‧second end

33‧‧‧ sets of holes

34‧‧‧Threaded Department

35‧‧‧ embossing department

40‧‧‧ Cards

Claims (11)

A pneumatic tool-specific post comprising: a shaft member having axially distinct ends respectively having a first end and a second end, the first end of the shaft member being provided with a recess, The recess has a first contact segment and a second contact segment, the second contact segment is formed by the first contact segment extending toward the second end of the shaft member, and the second end of the shaft member can be assembled to the pneumatic tool Between the first end of the shaft member and the second end of the shaft member, an external thread portion having a first joint portion adjacent to the first end of the shaft member and a adjacent portion a second joint portion of the second end of the shaft member; a sleeve member slidably sleeved on the shaft member, the sleeve member including a first end for assembling the drive head and a second portion The sleeve member has a shaft hole extending between the first end of the sleeve member and the second end of the sleeve member for the shaft member to pass through, the first end diameter of the sleeve member Providing a radial hole communicating with the shaft hole; a stopper member screwed to the shaft member, the Each of the two different ends has a first end and a second end, and the first end of the stopper selectively abuts against the second end of the sleeve member, the stopper has a stop therethrough a first end of the piece and a second end of the stopper and a sleeve hole through which the shaft member passes, the stopper forming an internal thread portion in the sleeve hole, the internal thread portion being screwed on the shaft An external threaded portion, the stopper being switchable between the first position and the second position; and a latching member received in the radial hole of the sleeve member and movable relative to the radial hole; The stopper is located at the first position, the internal threaded portion of the stopper is screwed to the first joint portion of the external thread portion, and the first end of the stopper abuts against the second end of the sleeve member. The shaft member and the sleeve member are not movable relative to each other, and the latch member abuts against the first contact portion of the recess, the latch member can be locked to the driving head, and the driving head is firmly coupled to the driving head a special pole for a pneumatic tool; the stopper is located at the second position, the internal thread portion of the stopper is screwed to the second joint portion of the external thread portion, and the first end of the stopper is away from the sleeve member a second end, the sleeve member is axially movable relative to the shaft member, the latch member abuts against the second contact portion of the recess, the latch member is disengaged from the drive head, and the drive head can be driven by the pneumatic Tool-specific post removal. The pneumatic tool-specific post according to claim 1, wherein the different ends of the shaft member respectively have a first end of the shaft member and a second end of the shaft member along a first virtual axis, A vertical distance between the first contact segment and the first virtual axis defines a first height, and a vertical distance between the second contact segment and the first virtual axis defines a second height, the first height being greater than the first The height is such that a height difference is formed between the first contact segment and the second contact segment. The pneumatic tool-specific post according to claim 2, wherein the first height of the first contact segment is such that when the latch member is located at the first contact portion of the recess, an outer portion of the latch member Protruding the radial hole and the outer surface of the first end of the sleeve member, the outer side portion of the latch member is capable of being latched to the driving head; the second height of the second contact portion is set to be the latch When the piece is located at the second contact portion of the recess, the outer side portion of the latch member does not protrude from the path An outer surface of the first end of the bore and the sleeve member. The pneumatic tool-specific post according to claim 1, wherein a distance between the opposite ends of the external thread portion defines a first width, and a distance between the opposite ends of the stopper defines a second width, The second width is less than the first width. The pneumatic tool-specific post according to claim 1, wherein the second end of the sleeve member forms a first stop surface, and the first end of the stopper forms a second stop surface, the stopper When in the first position, the second stop surface of the stopper abuts against the first stop surface of the sleeve member, so that the shaft member and the sleeve member cannot move relative to each other, and the stopper is located at the first position In the second position, the second stop surface of the stop member is away from the first stop surface of the sleeve member such that the sleeve member is movable relative to the shaft member. The pneumatic tool-specific post according to claim 1, wherein a first portion of the shaft member and a second end of the shaft member form a convex portion adjacent to the first end of the shaft member Having a first contact surface, the shaft hole of the sleeve member forms an enlarged portion adjacent to the second end of the sleeve member and the enlarged portion has a second contact surface, the stopper is located at the second position, the sleeve The member is movable relative to the shaft member, the first contact surface of the shaft member abuts against the second contact surface of the sleeve member, and the radial hole of the sleeve member drives the latch member to be the first of the recessed portion The contact section is moved to the second contact section of the recess. The pneumatic tool-specific post according to claim 6, wherein the shaft member protrudes between the convex portion and the first end of the shaft member to form a shoulder, and the shoulder portion extends axially from the convex portion. Forming, the shoulder portion has a quadrangular cross section, and the shaft hole forms a narrowing portion and a first end adjacent to the sleeve member An intermediate portion between the enlarged portion and the reduced portion, the reduced portion of the shaft hole receives the first end of the shaft member, and the middle portion of the shaft hole has a square shape, and the middle of the shaft hole The portion of the shaft member is received by the portion. The pneumatic tool-specific post according to claim 7, wherein the outer diameter of the convex portion is larger than the outer diameter of the first end of the shaft member and the outer diameter of the second end of the shaft member, and the outer diameter of the shoulder portion is larger than The outer diameter of the first end of the shaft member and the outer diameter of the second end of the shaft member, the outer diameter of the shoulder portion being smaller than the outer diameter of the convex portion. The pneumatic tool-specific post according to claim 1, wherein the latch member is a ball, and the radial hole has a smaller diameter than the latch member at one end away from the shaft member. A pneumatic tool-specific post according to claim 1, wherein the outer surface of the stopper has an embossed portion to increase the frictional force when the user rotates the stopper. The pneumatic tool-specific post according to claim 2, wherein the first end of the sleeve member has a square shape taken along a direction perpendicular to the first virtual axis, and the second end of the sleeve member is along the The section taken in the vertical direction of the first virtual axis is circular.