TWI715326B - Tool extension rod - Google Patents

Abstract

A tool extension rod is provided, including a main piece, a sliding piece and a magnetic assembly. The sliding piece is slidably disposed on the main piece. When the sliding piece moves between a first position and a second position, the magnetic assembly is movable along an axis.

Description

Tool extension

The present invention is related to the tool extension rod.

Generally, driving tools use tool adapters to rotate different processed parts, such as screws, drill rods, etc., such as the tool adapter disclosed in Taiwan Patent M559227. The focus of this patent is that the tool adapter can be selected Assemble drill bits or fasteners in a flexible manner. In other words, the tool extension of this patent is a device specially used to assist drilling operations to save the replacement time of drill bits and fasteners.

However, the most common use of tool extensions is still to directly turn the fasteners. The tool extensions disclosed in the above patents can only drive a single size. Therefore, once the fasteners of different sizes are to be turned, the user still has to repeat There are shortcomings that need to be improved urgently when changing different tool extensions.

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

The main purpose of the present invention is to provide a tool extension rod, which provides two different sizes of sockets, which can be applied to two different sizes of to-be-rotated parts, and regardless of whether the sliding assembly is in the first position or the second position when used, The magnetic components can be adjusted for axial movement to reliably and stably magnetically attract Rotating pieces.

To achieve the above objective, the present invention provides a tool extension rod, which includes: a main body, a sliding sleeve and a magnetic assembly. The main body includes a driving part and a working part which are axially connected, the driving part is for connecting a driving tool, and the working part comprises an inner space and a first socket, the first socket is axially connected to the inner Space; the sliding sleeve can move in a first position and a second position in the working part, the sliding sleeve includes a second socket, the radial dimension of the second socket is larger than the first socket The radial dimension; the magnetic assembly can be axially movably accommodated in the internal space, the magnetic assembly can move with the sliding sleeve between the first socket and the second socket; wherein, when the When the sliding sleeve slides toward the driving part and is located at the first position, the second socket does not protrude from the first socket, and the first socket is for a first rotating part to be inserted into the assembly, and the magnetic The suction assembly is located at the first set of interfaces and can correspondingly move axially according to the insertion depth of the first to-be-rotated member; when the sliding sleeve slides back to the driving part and is located at the second position, the The second socket protrudes from the first socket, the second socket is for a second part to be rotated to be inserted into the assembly, and the magnetic attraction assembly is located on the second socket and can cooperate with the second part to be rotated The insertion depth corresponds to the axial movement; wherein, the main body further includes at least one first sliding groove, the at least one first sliding groove communicates with the internal space; the sliding sleeve further includes at least one second sliding groove The second sliding groove corresponds to the first sliding groove; the magnetic assembly includes a sliding rod and a magnetic body. The sliding rod penetrates and connects to the magnetic body in a synchronous relationship, and the sliding rod slides It is arranged in the first sliding groove and protruding into the second sliding groove, and the magnetic attractor is used for magnetically attracting the first member to be rotated or the second member to be rotated.

1: The main part

11: Drive

12: Work Department

121: internal space

122: The first set of interfaces

13: The first chute

131: The first wall

132: second wall

2: slip kit

21: The second set of interfaces

22: second chute

221: The Third Block

222: The Fourth Block

3: Magnetic components

31: Slider

32: Magnet

321: Block

322: Through hole

323: room

324: Magnetic parts

4: Elastic part

5: cover

51: ring recess

61: Positioning components

62: positioning recess

63: limit piece

71A, 71B: The first part to be rotated

72A, 72B: The second part to be rotated

Figure 1 is a perspective view of an embodiment of the present invention.

Figure 2 is an exploded view of Figure 1.

Figure 3 is a partial cross-sectional view of the sliding assembly in the first position.

Fig. 4 is the first use state diagram of Fig. 3.

Fig. 5 is a second use state diagram of Fig. 3.

Figure 6 is a partial cross-sectional view of the sliding sleeve in the second position.

Fig. 7 is the first use state diagram of Fig. 6;

Fig. 8 is a second use state diagram of Fig. 6;

The following examples are only used to illustrate the possible implementation aspects of the present invention, but they are not intended to limit the scope of protection of the present invention, and are described first.

Please refer to FIGS. 1 to 8, which show an embodiment of the present invention. The tool post of the present invention includes a main body 1, a sliding sleeve 2 and a magnetic assembly 3.

The main body 1 includes a driving part 11 and a working part 12 connected in the axial direction. The driving part 11 is for connecting a driving tool. The working part 12 includes an inner space 121 and a first socket 122. The first The socket 122 communicates with the internal space 121 axially. In addition, the sliding sleeve 2 is movable in a first position and a second position on the working part 12, the sliding sleeve 2 includes a second socket 21, the radial dimension of the second socket 21 is larger than The radial dimension of the first socket 122 allows the user to select the first socket 122 or the second socket 21 by sliding the sliding sleeve 2. In addition, the magnetic assembly 3 can be axially movably accommodated in the internal space 121, and the magnetic assembly 3 can move along with the sliding sleeve 2 between the first socket 122 and the second socket 21 , To match the user's choice of the first socket 122 or the second socket 21 for use.

Wherein, when the sliding sleeve 2 slides toward the driving part 11 and is located at the first position, the second socket 21 does not protrude from the first socket 122, and the first socket 122 provides a first waiting The rotating parts 71A, 71B (such as nuts, screws, etc.) are inserted into the assembly, and the magnetic assembly 3 is located at the first socket 122 and can match the insertion depth of the first to-be-rotated parts 71A, 71B. Correspondingly move in the axial direction, and then the magnetic assembly 3 can change the position in the axial direction according to the thickness of the first to-be-rotated member 71A, 71B or the surrounding elements, as shown in the first in Figure 4 The part 71A (screw) to be rotated, or the first part 71B (nut) to be rotated through the screw as shown in Figure 5, at this time the magnetic assembly 3 can retreat as the screw extends and abuts . Similarly, when the sliding sleeve 2 slides away from the driving portion 11 and is located at the second position, the second socket 21 protrudes from the first socket 122, and the second socket 21 provides a The two rotating parts 72A, 72B are inserted into the assembly, and the magnetic assembly 3 is located at the second socket 21 and can correspondingly move axially according to the different types of the second rotating parts 72A, 72B, such as The second to-be-rotated part 72A (screw) as shown in FIG. 7 or the second to-be-rotated part 72B (nut) through which a screw thread passes as shown in FIG. 8.

More specifically, no matter whether the user uses the first set of interfaces 122 or the second set of interfaces 21, the magnetic attraction assembly 3 can be adjusted for axial movement to match the thickness of different parts to be rotated, in other words, The magnetic assembly 3 can reliably magnetically attract the rotating parts of various sizes, so that the rotating parts can surely move with the tool extension without falling, which is convenient for the user to work.

To further explain the structure and configuration of the magnetic assembly 3, the main body member 1 further includes at least one first sliding groove 13, the at least one first sliding groove 13 communicates with the internal space 121, and the sliding sleeve 2 further includes At least one second chute 22, the second chute 22 is connected to the first chute 13, the magnetic assembly 3 includes a sliding rod 31 and a magnetic body 32, the sliding rod 31 is connected to the magnetic body 32 is in the same motion relationship, and the sliding rod 31 is slidably disposed in the first sliding groove 13 and protruding into the second sliding groove 22, and the magnetic body 32 is used for magnetically attracting the first rotating member 71A, 71B Or the second to-be-rotated member 72A, 72B. In this embodiment, the magnetic attractor 32 includes a Body 321 and a magnetic member 324. The base body 321 is provided with a through hole 322 and a recessed chamber 323. The magnetic member 324 is positioned in the chamber 323, and the slide rod 31 is connected through the through hole 322. The seat body 321. In addition, the magnetic member 324 cannot be magnetically attracted to the base 321, so as to effectively control the direction of the magnetic force of the magnetic member 324, and prevent the magnetic force from unintended magnetically attracting surrounding structures and affecting the smoothness of operation.

Furthermore, in the axial direction, the two ends of the first sliding groove 13 define a first blocking wall 131 and a second blocking wall 132. The second blocking wall 132 is farther from the driving portion 11, and the second sliding groove 13 Two ends of the groove 22 define a third blocking wall 221 and a fourth blocking wall 222, the fourth blocking wall 222 is farther away from the driving portion 11; wherein, when the sliding sleeve 2 slides to the first position, the The sliding rod 31 is limited to sliding between the fourth blocking wall 222 and the first blocking wall 131. When the sliding assembly 2 slides to the second position, the sliding rod 31 is limited to the third blocking wall 221 and The second blocking wall 132 slips between. That is, while the sliding assembly 2 slides relative to the main body 1, the sliding limit position of the sliding rod 31 can be changed, so that the magnetic body 32 protrudes from the first socket 122 or the second socket 21 to match the selection of the first socket 122 or the second socket 21.

In this embodiment, the length of the first sliding groove 13 is greater than the length of the second sliding groove 22. When the sliding sleeve 2 is located at the first position and the sliding rod 31 abuts against the fourth blocking wall 222, The magnetic body 32 extends into the first socket 122 but does not protrude from the first socket 122; and when the sliding assembly 2 is at the second position and the sliding rod 31 abuts against the second blocking wall At 132, the magnetic body 32 protrudes from the first socket 122 to extend into the second socket 21, but the magnetic body 32 does not protrude from the second socket 21. Wherein, when the sliding sleeve 2 is in the second position, the distance from the sliding rod 31 to the third blocking wall 221 is equal to the protrusion amount of the magnetic attraction body 32 protruding from the first socket 122.

Preferably, the tool post further includes a cover 5 which is positioned on the sliding sleeve 2 and covers the at least one second sliding groove 22, so as to maintain the internal space 121 in a better environment and prevent Foreign objects (such as dust, insects, sand, etc.) enter and interfere with the operation of the slider 31. And, in actual use At this time, the user often pushes the cover 5 with his fingers to drive the entire slide assembly 2 to move. Therefore, it is preferable to provide a plurality of ring recesses 51 on the surface of the cover 5, which can be compared with the user's fingers. Large contact area to improve the stability of pushing.

Preferably, the tool extension rod further includes an elastic member 4 which springs between the wall of the internal space 121 and the magnetic component 3, so that the magnetic component 3 normally has To move away from the driving part 11. In actual use, the user only needs to directly cover the tool extension rod to receive the rotating part, and the magnetic attraction assembly 3 can automatically adjust to an appropriate axial position against the rotating part, and can have a larger Magnetic attraction to attract the parts to be rotated.

Preferably, the tool post further includes a positioning component 61 and two positioning recesses 62 arranged at intervals. One of the positioning component 61 and the two positioning recesses 62 is provided on the main body 1 and the other is provided on the The sliding sleeve 2; wherein, when the positioning component 61 is positioned with a positioning concave portion 62, the sliding sleeve 2 is positioned at the first position, when the positioning component 61 is positioned with another positioning concave portion 62, The sliding sleeve 2 is positioned at the second position.

In this embodiment, the tool post further includes a limiting member 63. The limiting member 63 radially protrudes from the working portion 12, and when the sliding member 2 is positioned at the first position, the sliding member 2 At the same time, it axially abuts against the limiting member 63 to improve the positioning effect and prevent the sliding sleeve 2 from falling out of the driving portion 11.

In summary, the tool extension rod of the present invention provides two different sizes of the first set of interfaces and the second set of interfaces for users to choose from. At the same time, it is designed that no matter what kind of interface is selected, the magnetic assembly can be matched with the rotating part. The insertion depth moves axially, and then the magnetic attraction component can reliably magnetically attract the part to be rotated.

1: The main part

11: Drive

2: slip kit

3: Magnetic components

5: cover

51: ring recess

63: limit piece

Claims (9)

A tool extension rod includes: a main body, including a driving part and a working part connected in an axial direction. The driving part is used for connecting a driving tool. The working part includes an inner space and a first set of interfaces. A set of interfaces is axially connected to the internal space; a sliding sleeve, which can be moved to a first position and a second position, slides on the working part, includes a second set of interfaces, the radial dimension of the second set of interfaces Greater than the radial dimension of the first set of ports; a magnetic attraction component, which is axially movably accommodated in the internal space, and can move with the sliding sleeve between the first set of ports and the second set of ports; Wherein, when the sliding sleeve slides toward the driving part and is located at the first position, the second socket does not protrude from the first socket, and the first socket is for a first part to be rotated into the assembly Then, the magnetic assembly is located at the first socket and can move axially corresponding to the insertion depth of the first to-be-rotated component; when the sliding assembly slides away from the driving part and is located at the second Position, the second socket protrudes from the first socket, the second socket is for a second to-be-rotated part to be inserted into the assembly, and the magnetic attraction assembly is located on the second socket and can be matched with the second socket The insertion depth of the to-be-rotated element is correspondingly moved axially; wherein, the main body further includes at least one first chute, and the at least one first chute communicates with the internal space; the sliding sleeve further includes at least A second chute, the second chute correspondingly communicates with the first chute; the magnetic assembly includes a sliding rod and a magnetic body, the sliding rod is penetrated and connected to the magnetic body to form a synchronous relationship, and The sliding rod is slidably disposed in the first sliding groove and protruding into the second sliding groove, and the magnetic attractor is used for magnetically attracting the first member to be rotated or the second member to be rotated. The tool extension rod according to claim 1, further comprising a cover, which is positioned on the sliding sleeve and covers the at least one second sliding groove. The tool extension according to claim 1, wherein in the axial direction, two ends of the first sliding groove define a first blocking wall and a second blocking wall, the second blocking wall is farther away from the driving part, and the second blocking wall The two ends of the two sliding grooves define a third blocking wall and a fourth blocking wall, the fourth blocking wall is far away from the driving part; wherein, when the sliding sleeve slides to the first position, the sliding rod is limited to The fourth blocking wall and the first blocking wall slide. When the sliding sleeve slides to the second position, the sliding rod is limited to sliding between the third blocking wall and the second blocking wall. The tool extension according to claim 3, wherein when the sliding sleeve is located at the first position and the sliding rod abuts against the fourth blocking wall, the magnetic attraction system extends into the first socket but does not protrude At the first socket; when the sliding sleeve is at the second position and the sliding rod is against the second blocking wall, the magnetic attraction system protrudes from the first socket and extends into the second socket , But the magnetic body does not protrude from the second socket. The tool extension according to claim 4, wherein when the sliding assembly is in the second position, the distance from the sliding rod to the third blocking wall is equivalent to the protrusion of the magnetic attractor protruding from the first socket Extension. The tool extension according to claim 1, further comprising a positioning component and two positioning recesses arranged at intervals, one of the positioning component and the two positioning recesses is provided on the main body and the other is provided on the sliding assembly; Wherein, when the positioning component is positioned with a positioning recess, the sliding sleeve is positioned at the first position, and when the positioning component is positioned with another positioning recess, the sliding sleeve is positioned at the second position . The tool extension rod according to claim 6, further comprising a stopper, the stopper radially protrudes the working part, when the sliding sleeve is positioned at the first position, the sliding sleeve abuts axially at the same time Lean on the limit piece. The tool extension rod according to any one of claims 1 to 7, further comprising an elastic member that springs between the wall of the internal space and the magnetic component, so that the magnetic component is in a normal state The ground has a tendency to move away from the driving part. The tool extension rod according to claim 5, further comprising a cover, a positioning component, two spaced positioning recesses, a limiting part and an elastic part, the cover being positioned on the sliding assembly and covering the at least A second sliding groove, one of the positioning component and the two positioning recesses is provided on the main body, and the other is provided on the sliding sleeve; wherein, when the positioning component and a positioning recess are positioned, the sliding sleeve Is positioned at the first position. When the positioning component is positioned with the other positioning recess, the sliding sleeve is positioned at the second position, and the stopper radially protrudes the working portion, when the sliding sleeve When positioned at the first position, the sliding sleeve abuts against the limiting element in the axial direction at the same time, and the elastic element springs against the wall of the internal space and the magnetic component, so that the magnetic component is normally It has a tendency to move away from the driving part; the magnetic body includes a base body and a magnetic member, the base body is provided with a through hole and a recessed chamber, the magnetic member is positioned in the chamber, and the sliding rod The base is connected through the through hole; the magnetic member cannot be magnetically attracted to the base; a plurality of ring recesses are provided on the surface of the cover; the length of the first slide groove is greater than the length of the second slide groove .

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