TWI758152B - Tool joint - Google Patents

Abstract

A tool joint includes a first connecting member, a second connecting member and a first elastic member. The first connecting member extends along a first rotating axis. The second connecting member extends along a second rotating axis. The second connecting member can pivot relative to the first connecting member between a first position and a second position. When the second connecting member is in the first position, the first rotating axis and the second rotating axis are on a same line. When the second connecting member is in the second position, the first rotating axis and the second rotating axis intersect form an angle therebetween. The first elastic member is disposed between the first connecting member and the second connecting member. One end of the first elastic member can maintain a relative position to connect with the first connecting member, and another end can maintain a relative position to connect with the second connecting member too. The first elastic member is a linear wave spring and forms at least one bent portion between two opposite ends. The tool joint can guide the second connecting member by the above structure.

Description

tool connector

The present invention mainly discloses a joint, especially a tool joint.

Please refer to Patent No. I619890 of the Republic of China, which discloses a ball joint adapter with magnetic attraction function and its combination with a fixing member, including a first part, a second part, a limiting part and a magnetic attraction part. The first part has a first end suitable for connecting with the power tool and a second end opposite to the first end, the first part includes a sleeve groove provided at the second end, the second part can be yawed relative to the first part and can be connected with the first part. The first part rotates together to be suitable for transmitting the rotational force from the power tool, the second part has a ball end and a connecting end opposite to the ball end, the ball end is pivotally connected to the sleeve groove, and the connecting end is suitable for detachable connection The fixing piece, the limiting piece is arranged between the first part and the second piece, the magnetic attraction piece is arranged at the connecting end of the second piece and is suitable for the magnetic attraction fixing piece.

However, the above-mentioned adapters are mainly driven by power tools. Since the second part can deflect freely relative to the first part, when the power tool drives the above-mentioned adapter device to rotate, the second part will be thrown and skewed.

In view of the lack of the above-mentioned conventional structure, the present inventors have designed a tool joint which can overcome all the disadvantages of the above-mentioned conventional structure.

The technical problem to be solved by the present invention is: when the conventional adapter device is driven by a power tool, since the second part can deflect freely relative to the first part, the second part will be shaken and skewed.

Therefore, the present invention provides a tool joint including a first connecting member, a second connecting member and a first elastic member. The first connecting member extends along the axial direction of the first rotating shaft. The second connecting member extends along the axial direction of the second rotating shaft and can swing relative to the first connecting member between the first position and the second position. When the second connecting member is in the first position, the first rotating shaft and the second rotating shaft are on the same line, and when the second connecting member is in the second position, the first rotating shaft and the second rotating shaft intersect and form an included angle therebetween. The first elastic piece is arranged between the first connecting piece and the second connecting piece, one end of the first elastic piece can be connected to the first connecting piece in a relative position and the other end can be connected with the second connecting piece in a relative position. The first elastic piece is an elastic piece and at least one first bending portion is formed between the opposite ends.

In an embodiment of the present invention, the first elastic member has a rectangular cross-sectional shape and is bent to form two first bending portions, and the two first bending portions are respectively located at different levels.

In an embodiment of the present invention, the first connecting member is recessed with a first groove, and the first groove has a first groove bottom surface and a first connecting groove formed on the first groove bottom surface. One end of the second connecting piece adjacent to the first connecting piece is recessed with a second groove, and the second groove has a second groove bottom surface and a second connecting groove formed on the second groove bottom surface. One end of the first elastic piece is inserted into the first connecting groove and the other end is inserted into the second connecting groove.

In an embodiment of the present invention, both the first groove bottom surface and the second groove bottom surface are arc surfaces, and the curvature of the first groove bottom surface is smaller than the curvature of the second groove bottom surface.

In an embodiment of the present invention, one of the two first bending portions of the first elastic member is in contact with the bottom surface of the first groove, and the other first bending portion is swung with the second connecting member relative to the first connecting member. selectively abuts against the bottom surface of the second groove.

In an embodiment of the present invention, one end of the first connecting member along the axial direction of the first rotating shaft is provided with a first pivot ear and a second pivot ear, and a first pivot is arranged between the first pivot ear and the second pivot ear. space, the first groove is arranged at the bottom of the first pivot space. The first connecting piece is radially provided with a first through hole, and the first through hole penetrates the first pivot ear and the second pivot ear. One end of the second connecting member is disposed in the first pivot space, and the second connecting member has a second through hole radially through the second rotating shaft and is connected with a first pivot rod, and the first pivot rod is inserted into the first through hole at the same time Inside the second through hole, the first pivot rod is connected to the first pivot ear, the second connecting piece and the second pivot ear.

In an embodiment of the present invention, a third groove is recessed at one end of the second connecting member opposite to the first connecting member, and the third groove has a third groove bottom surface and a third connection formed on the third groove bottom surface. groove. The second connecting member is provided with a third through hole along the radial direction of the second rotating shaft and is connected with a second pivot rod. The tool joint further includes a third connecting piece and a second elastic piece, one end of the third connecting piece is provided with a third pivot ear and a fourth pivot ear, and a second pivot ear is arranged between the third pivot ear and the fourth pivot ear The pivot space, the bottom of the second pivot space is recessed with a fourth groove, the fourth groove has a bottom surface of the fourth groove and a fourth connecting groove formed on the bottom surface of the fourth groove, and the third connecting piece is provided with a first There are four perforations, the fourth perforation penetrates the third pivot ear and the fourth pivot ear, and one end of the second connecting piece opposite to the first connecting piece is disposed in the second pivoting space. The second pivot rod is inserted into the third through hole and the fourth through hole at the same time, the second pivot rod is connected to the third pivot ear, the second connecting piece and the fourth pivot ear, and one end of the second elastic piece is inserted into the third connecting groove and the other end is inserted in the fourth connection slot.

In an embodiment of the present invention, the second elastic member is an elastic sheet and at least one second bending portion is formed between different two ends, the second elastic member has a rectangular cross-sectional shape and is bent to form two second bending portions. and the two second bending parts are respectively located at different levels, and one of the two second bending parts of the second elastic member abuts against the bottom surface of the third groove.

In an embodiment of the present invention, both the third groove bottom surface and the fourth groove bottom surface are arc surfaces, and the curvature of the fourth groove bottom surface is smaller than the curvature of the third groove bottom surface.

In an embodiment of the present invention, one end of the first connecting piece opposite to the second connecting piece is recessed with a connecting hole, the connecting hole has a rectangular cross-sectional shape, and one end of the third connecting piece opposite to the second connecting piece is provided with a connecting head. , the connector is in the shape of a quadrangular column.

Based on the above, the pneumatic tool can drive the sleeve in an oblique direction through the tool joint provided by the present invention, and through the action of the first elastic member, the second connecting member can be moved to the direction of the first position, and the second connecting member can be guided. The effect is to prevent the tool joint 10 from shaking. In addition, one of the two first bending portions of the first elastic member abuts against the bottom surface of the first groove, and the other first bending portion selectively abuts against the first connecting member as the second connecting member swings relative to the first connecting member. The bottom surface of the second groove can provide better guiding force.

Other objects, advantages and novelties of the present invention will become more apparent from the following detailed description and the associated drawings.

Regarding the techniques, means and effects of the present invention, a preferred embodiment is given and described in detail in conjunction with the drawings.

Referring to FIG. 1 to FIG. 5 , it is a three-dimensional appearance view, an exploded schematic view, and a cross-sectional schematic view of an embodiment of the tool joint of the present invention. The tool joint 10 of the present invention at least includes a first connecting member 20 , a second connecting member 30 and a first elastic member 40 . The first connecting member 20 extends along the axial direction of a first rotating shaft L1. The second connecting member 30 extends along the axial direction of a second rotating shaft L2 and can swing relative to the first connecting member 20 between the first position and the second position. When the second connecting member 30 is in the first position, the first rotating shaft L1 and the second rotating shaft L2 are on the same line (as shown in FIG. 4 ). When the second connecting member 30 is in the second position, the first rotation axis L1 and the second rotation axis L2 intersect and form an included angle therebetween. The first elastic member 40 is disposed between the first connecting member 20 and the second connecting member 30. One end of the first elastic member 40 can be connected to the first connecting member 20 in a relative position and the other end can be connected to the first connecting member 20 in a relative position. The second connecting member 30 and the first elastic member 40 are elastic pieces and at least one first bending portion 41 is formed between the two opposite ends.

As shown in FIG. 2 and FIG. 3 , the first elastic member 40 can further have a rectangular cross-sectional shape and integrally form two first bending portions 41 by bending, and the two first bending portions 41 are located at different positions respectively. on the horizontal height.

In order to connect the different ends of the first elastic member 40 to the first connecting member 20 and the second connecting member 30 in a relative position, respectively, the first connecting member 20 is recessed with a first groove 21 . 21 has a first groove bottom surface 211 and a first connecting groove 212 formed on the first groove bottom surface 211 . One end of the second connecting member 30 adjacent to the first connecting member 20 is recessed with a second groove 31 . The second groove 31 has a second groove bottom surface 311 and a second connecting groove 312 formed on the second groove bottom surface 311 . One end of the first elastic member 40 is inserted into the first connecting groove 212 and the other end is inserted into the second connecting groove 312 , so as to be connected to the first connecting member 20 and the second connecting member 30 respectively while maintaining relative positions.

Further, both the first groove bottom surface 211 and the second groove bottom surface 311 are arc surfaces, and the curvature of the first groove bottom surface 211 is smaller than the curvature of the second groove bottom surface 311 . One of the two first bending portions 41 of the first elastic member 40 abuts against the first groove bottom surface 211 , and the other first bending portion 41 is selectively selected as the second connecting member 30 swings relative to the first connecting member 20 . abuts against the second groove bottom surface 311 . Therefore, the pneumatic tool can drive the sleeve in an oblique direction (the second position) through the tool joint 10, and through the action of the first elastic member 40, the second connecting member 30 can be moved in the direction of the first position, which has the function of guiding the second position. The effect of the connecting piece 30 prevents the tool joint 10 from shaking. In addition, one of the two first bending portions 41 of the first elastic member 40 abuts against the bottom surface 211 of the first groove, and the other first bending portion 41 swings with the second connecting member 30 relative to the first connecting member 20 . Selectively abutting against the bottom surface 311 of the second groove can provide better alignment force.

In order to connect the first connecting member 20 and the second connecting member 30 to each other, one end of the first connecting member 20 along the axial direction of the first rotating shaft L1 is provided with a first pivot ear 22 and a second pivot ear 23. The first pivot ear 22 A first pivot space 24 is disposed between the second pivot ear 23 and the first groove 21 is disposed at the bottom of the first pivot space 24 . The first connecting member 20 is radially provided with a first through hole 25 along the first rotation axis L1 , and the first through hole 25 penetrates through the first pivot ear 22 and the second pivot ear 23 . One end of the second connecting member 30 is disposed in the first pivoting space 24 . The second connecting member 30 is radially provided with a second through hole 32 along the second rotation axis L2 and is connected to a first pivot rod 33 . The first pivot rod 33 Simultaneously inserted into the first through hole 25 and the second through hole 32 , the first pivot rod 33 is connected to the first pivot ear 22 , the second connecting member 30 and the second pivot ear 23 .

In this embodiment, a third groove 34 is recessed at one end of the second connecting member 30 opposite to the first connecting member 20 . The third groove 34 has a third groove bottom surface 341 and a third groove bottom surface 341 formed on the third groove bottom surface 341 . The third connecting groove 342 of the second connecting member 30 is provided with a third through hole 35 along the radial direction of the second rotation axis L2 and is connected with a second pivot rod 36 . The tool joint 10 further includes a third connecting member 50 and a second elastic member 60. One end of the third connecting member 50 is provided with a third pivot ear 51 and a fourth pivot ear 52. The third pivot ear 51 and the fourth pivot A second pivot space 53 is provided between the ears 52 , a fourth groove 54 is recessed at the bottom of the second pivot space 53 , and the fourth groove 54 has a fourth groove bottom surface 541 and a fourth groove bottom surface 541 formed on the fourth groove bottom surface The fourth connection slot 542 of 541. The third connecting member 50 is provided with a fourth through hole 55 , the fourth through hole 55 penetrates the third pivot ear 51 and the fourth pivot ear 52 , and the end of the second connecting member 30 opposite to the first connecting member 20 is disposed in the second pivot space 53, the second pivot rod 36 is inserted into the third through hole 35 and the fourth through hole 55 at the same time. One end of the member 60 is inserted into the third connection slot 342 and the other end is inserted into the fourth connection slot 542 .

The second elastic member 60 and the first elastic member 40 in this embodiment can be the same elastic piece and at least one second bending portion 61 is formed between the different ends. The second elastic member 60 has a rectangular cross-sectional shape and is bent to form two second bending portions 61 , and the two second bending portions 61 are respectively located at different levels. One of the folded portions 61 abuts against the bottom surface 341 of the third groove. Both the third groove bottom surface 341 and the fourth groove bottom surface 541 are arc surfaces, and the curvature of the fourth groove bottom surface 541 is smaller than the curvature of the third groove bottom surface 341 .

One end of the first connecting piece 20 opposite to the second connecting piece 30 is recessed with a connecting hole 26 suitable for connecting a pneumatic tool (not shown in the figure). The connecting hole 26 has a rectangular cross-sectional shape. The third connecting piece 50 is opposite to the first connecting piece 50 One end of the two connecting pieces 30 is provided with a connecting head 56 suitable for connecting a sleeve (not shown in the figure), and the connecting head 56 is in the shape of a quadrangular column.

In addition, the tool joint 10 of this embodiment can also be provided with a tool quick release structure, so that the tool sleeve can be quickly connected to or disconnected from the connecting head 56 of the third connecting piece 50 . The tool quick release structure includes a third connecting member 50 and a connecting group 70 . The third connecting member 50 is further provided with a guide hole 57 extending along a longitudinal axis L, a control hole 58 communicating with the guide hole 57, and a clamping hole 59 communicating with the guide hole 57. The control hole 58 and the clamping hole 59 are respectively along the The radial direction of the longitudinal axis L extends through and penetrates the side wall of the third connecting piece 50 . The connection group 70 includes a guide member 71 movably disposed in the guide hole 57 , a control member 72 movably disposed in the control hole 58 , a clamping member 73 movably disposed in the clamping hole 59 , and a The biasing member 74 is disposed between the guide hole 57 and the guide member 71 . The control member 72 is connected to and can drive the guide member 71, so that when the control member 72 moves relative to the control hole 58, the guide member 71 is urged to move relative to the guide hole 57 against the biasing force of the biasing member 74, and the clamping member 73 selectively protrudes from the engaging hole 59 as the guide member 71 moves relative to the guide hole 57 .

Further, the control member 72 is movable relative to the control hole 58 in a direction parallel to the longitudinal axis L to switch between the buckled position and the released position. When the control member 72 is in the buckled position, the clipping member 73 protrudes from the clipping hole 59 . When the control member 72 is in the release position, the engaging member 73 does not protrude from the engaging hole 59 .

In order to enable the biasing force of the biasing member 74 to act on the guiding member 71, the guide hole 57 has a small-diameter section 571, a large-diameter section 572 communicating with the small-diameter section 571, and a small-diameter section 571 and a large-diameter section First shoulder 573 between segments 572 . The guide member 71 has a small diameter portion 711 , a large diameter portion 712 connecting the small diameter portion 711 , and a second shoulder 713 formed between the small diameter portion 711 and the large diameter portion 712 . The biasing member 74 is opposite to the Both ends abut against the first shoulder portion 573 and the second shoulder portion 713 respectively. In this embodiment, the biasing member 74 can be a coil spring and is sleeved on the large-diameter portion 712 , and the small-diameter section 571 of the guide hole 57 penetrates the top wall of the third connecting member 50 so that the control member 72 is located at the release position , the guide member 71 protrudes from the top wall of the third connecting member 50 .

In order to enable the clip 73 to selectively protrude from the clip hole 59 , the guide member 71 is provided with a concave portion 714 abutting against the clip 73 on the outer periphery of the small diameter portion 711 , and the concave portion 714 includes a A shallow section 7141 and a deep section 7142. Therefore, when the control member 72 is located at the buckled position, the engaging member 73 abuts against the shallow section 7141 and protrudes from the engaging hole 59 . When the control member 72 is in the release position, the engaging member 73 abuts against the deep section 7142 without protruding from the engaging hole 59 .

In order to enable the guide member 71 to be driven by the control member 72 , the guide member 71 is provided with a first threaded portion 715 along the radial direction of the longitudinal axis L on the large diameter portion 712 of the guide member 71 . The control member 72 has an operating portion 721 protruding from the control hole 58 and a second threaded portion 722 opposite to the operating portion 721 , and the second threaded portion 722 is screwed to the first threaded portion 715 , so that the control member 72 can drive the The guide member 71 moves relative to the guide hole 57 . In this way, the user only needs to move the operating portion 721 protruding from the control hole 58 with his finger to switch the control member between the buckled position and the release position. When the control member 72 is in the buckled position, the buckled member 73 abuts on the shallow section 7141 and protrudes from the engaging hole 59 for engaging with the recess of the sleeve. When the control member 72 is in the release position, the engaging member 73 abuts against the deep section 7142 and does not protrude from the engaging hole 59 so as to escape from the recess of the sleeve, thereby achieving the effect of quick release.

To sum up, the pneumatic tool can drive the sleeve obliquely through the tool joint 10 provided by the present invention (that is, the second connecting member 30 is located at the second position), and through the action of the first elastic member 40, the second connection can be made The member 30 moves in the direction of the first position, which has the effect of guiding the second connecting member 30 and preventing the tool joint 10 from shaking. In addition, one of the two first bending portions 41 of the first elastic member 40 abuts against the bottom surface 211 of the first groove, and the other first bending portion 41 swings with the second connecting member 30 relative to the first connecting member 20 . Selectively abutting against the bottom surface 311 of the second groove can provide better alignment force.

However, the above are only preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention. Therefore, any changes in numerical values or replacement of equivalent components, or equivalents made according to the scope of the patent application of the present invention Changes and modifications should still fall within the scope of the patent of the present invention.

10: Tool connector 20: The first connector 21: First groove 211: Bottom surface of the first groove 212: The first connection slot 22: First pivot ear 23: Second pivot ear 24: The first pivot space 25: First Piercing 26: Connection hole 30: Second connector 31: Second groove 311: Bottom surface of the second groove 312: Second connection slot 32: Second Piercing 33: First pivot rod 34: Third groove 341: Bottom surface of the third groove 342: The third connection slot 35: Third Piercing 36: Second pivot rod 40: The first elastic piece 41: The first bending part 50: Third connector 51: The third pivot ear 52: Fourth pivot ear 53: Second pivot space 54: Fourth groove 541: Bottom surface of the fourth groove 542: Fourth connection slot 55: Fourth Piercing 56: Connector 57: Pilot hole 571: Trail Section 572: Large diameter section 573: First Shoulder 58: Control hole 59: snap hole 60: Second elastic piece 61: Second bending part 70: Connection Group 71: Guide 711: Small diameter department 712: Large diameter part 713: Second Shoulder 714: Recess 7141: Shallow segment 7142: Deep segment 715: The first thread part 72: Controls 721: Operation Department 722: Second thread part 73: Clips 74: Bias L: vertical axis L1: The first reel L2: The second shaft

FIG. 1 is a schematic view of the appearance of an embodiment of the tool joint of the present invention. 2 and 3 are respectively exploded schematic views of the tool joint shown in FIG. 1 . 4 and 5 are respectively schematic cross-sectional views of the tool joint shown in FIG. 1 .

10: Tool connector

20: The first connector

21: First groove

211: Bottom surface of the first groove

212: The first connection slot

22: First pivot ear

23: Second pivot ear

24: The first pivot space

25: First Piercing

30: Second connector

31: Second groove

32: Second Piercing

33: First pivot rod

34: Third groove

35: Third Piercing

36: Second pivot rod

40: The first elastic piece

41: The first bending part

50: Third connector

51: The third pivot ear

52: Fourth pivot ear

53: Second pivot space

55: Fourth Piercing

56: Connector

57: Pilot hole

58: Control hole

59: snap hole

60: Second elastic piece

61: Second bending part

70: Connection Group

71: Guide

711: Small diameter department

712: Large diameter part

713: Second Shoulder

714: Recess

715: The first thread part

72: Controls

721: Operation Department

722: Second thread part

73: Clips

74: Bias

Claims (10)

A tool joint comprising: a first connector extending along the axial direction of a first shaft; a second connecting member, extending along the axial direction of a second rotating shaft and capable of swinging relative to the first connecting member between a first position and a second position, when the second connecting member is in the first position, the first rotating shaft On the same line as the second rotating shaft, when the second connecting member is in the second position, the first rotating shaft and the second rotating shaft intersect and form an included angle therebetween; and A first elastic member disposed between the first connecting member and the second connecting member, one end of the first elastic member can be connected to the first connecting member in a relative position and the other end can be connected in a relative position In the second connecting piece, the first elastic piece is an elastic piece and at least one first bending portion is formed between the different two ends. The tool joint of claim 1, wherein the first elastic member has a rectangular cross-sectional shape and is bent to form two first bending portions, and the two first bending portions are located at different levels respectively. The tool joint according to claim 2, wherein the first connecting member is recessed with a first groove, the first groove has a first groove bottom surface and a first connecting groove formed on the first groove bottom surface, One end of the second connecting member adjacent to the first connecting member is recessed with a second groove, the second groove has a second groove bottom surface and a second connecting groove formed on the second groove bottom surface, the first groove One end of the elastic piece is inserted into the first connecting groove and the other end is inserted into the second connecting groove. The tool joint of claim 3, wherein both the first groove bottom surface and the second groove bottom surface are arc surfaces, and the curvature of the first groove bottom surface is smaller than the curvature of the second groove bottom surface. The tool joint as claimed in claim 4, wherein one of the two first bending portions of the first elastic member abuts against the bottom surface of the first groove, and the other first bending portion follows the second connecting member Swing relative to the first connecting piece to selectively abut against the bottom surface of the second groove. The tool joint as claimed in claim 3, wherein one end of the first connecting member along the axial direction of the first rotating shaft is provided with a first pivot ear and a second pivot ear, and the first pivot ear and the second pivot ear are between the first pivot ear and the second pivot ear. A first pivoting space is arranged between the two, the first groove is arranged at the bottom of the first pivoting space, and the first connecting member is radially provided with a first through hole along the first rotating shaft, and the first through hole penetrates the first through hole. A pivot ear and the second pivot ear, one end of the second connecting piece is disposed in the first pivot space, and the second connecting piece is radially provided with a second through hole along the second axis and is connected to a first A pivot rod, the first pivot rod is inserted into the first through hole and the second through hole at the same time, and the first pivot rod is connected to the first pivot ear, the second connecting piece and the second pivot ear. The tool joint of claim 6, wherein an end of the second connecting piece opposite to the first connecting piece is recessed with a third groove, the third groove has a third groove bottom surface and a The third connecting groove on the bottom surface of the three grooves, the second connecting piece is provided with a third through hole along the radial direction of the second rotating shaft and is connected with a second pivot rod. The tool joint further includes a third connecting piece and a second elastic One end of the third connecting piece is provided with a third pivot ear and a fourth pivot ear, a second pivot space is arranged between the third pivot ear and the fourth pivot ear, and the second pivot space is A fourth groove is recessed at the bottom. The fourth groove has a bottom surface of the fourth groove and a fourth connecting groove formed on the bottom surface of the fourth groove. The third connecting member is provided with a fourth through hole. The fourth through hole Passing through the third pivot ear and the fourth pivot ear, one end of the second connecting piece opposite to the first connecting piece is disposed in the second pivoting space, and the second pivot rod is simultaneously inserted into the third through hole In the fourth through hole, the second pivot rod is connected to the third pivot ear, the second connecting piece and the fourth pivot ear, one end of the second elastic piece is inserted into the third connecting groove and the other end is inserted into the fourth connection slot. The tool joint as claimed in claim 7, wherein the second elastic member is an elastic piece and at least one second bending portion is formed between different two ends, the second elastic member has a rectangular cross-sectional shape and is formed by bending There are two second bending portions, and the two second bending portions are respectively located at different levels, and one of the two second bending portions of the second elastic member abuts against the bottom surface of the third groove. The tool joint of claim 8, wherein both the third groove bottom surface and the fourth groove bottom surface are arc surfaces, and the curvature of the fourth groove bottom surface is smaller than the curvature of the third groove bottom surface. The tool joint of claim 7, wherein a connecting hole is recessed at one end of the first connecting piece opposite to the second connecting piece, the connecting hole has a rectangular cross-sectional shape, and the third connecting piece is opposite to the second connecting piece One end of the connecting piece is provided with a connecting head, and the connecting head is in the shape of a quadrangular column.

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