TWI466762B - Driving head-changeable tool - Google Patents

Description

Replaceable drive head tool

The present invention relates to a tool for a replaceable drive head.

In the conventional two-stage joint, the polygonal spherical head of the support rod is accommodated in the accommodating groove of the working head, and the shape of the accommodating groove is a polygonal shape corresponding to the polygonal spherical head, and is The connecting structure can be fixed to the working head when the supporting rod is pressed in, and can be pivoted relative to the working head when the supporting rod is pulled out. This is disclosed by TW566284 and TWM357344.

In the structure of TW566284, since the inner wall of the accommodating groove has a polygonal shape, it is in surface-to-surface contact with the polygonal spherical head, and when the support rod is driven relative to the working head by an electric driving device When rotating at high speed, it is easy to lock the card due to excessive friction between the polygonal ball head and the accommodating groove, and damage to the electric drive device and the two-stage tool joint; further, even if there is no lockup When used, it still wastes extra energy during the friction process, resulting in low work efficiency and unfavorable user operation.

In the structure of the TWM 357344, a plurality of flanges corresponding to the polygonal spherical heads are disposed on the side walls of the accommodating grooves, and the flanges are longitudinally disposed on the side walls of the accommodating grooves at equal intervals from each other. The number corresponds to the number of corners of the polygonal spherical head, and each flange has a convex arc contact surface for contacting the polygonal spherical head, so that the support rod and the working head are in a rotationally interlocking relationship, thereby improving the TW566284 The shortcomings of the structure.

However, the structure disclosed in TW566284 or TWM357344 does not have a retaining edge that can effectively stop the corners of the polygonal ball head, so that the driving head is easy to come out during high-speed rotation work, and there will be work. Poor efficiency, job interruptions, and even dangerous problems.

Therefore, it is necessary to provide a novel and progressive tool for replacing the drive head to solve the above problems.

The main object of the present invention is to provide a tool for replacing a driving head, which can prevent the driving head from being freely detached and convenient to replace the driving head; the driving head can be pivoted to have better working efficiency; and has fewer components and simple structure , easy assembly and so on.

To achieve the above object, the present invention provides a tool for replacing a drive head, comprising an outer kit and an inner kit. The outer sleeve defines a central axis, the outer sleeve has a set of inner end edges and a non-circular inner peripheral wall, and the inner edge of the sleeve end is provided with a plurality of corners and a plurality of retaining edges between the equiangular portions, The distance from the corner to the central axis is greater than the distance from the rim to the central axis. The inner kit has a non-circular outer peripheral wall, the inner sleeve is detachably sleeved by the outer sleeve and has a first end in the axial direction, and the inner wall of the first end is provided with a plurality of axial extensions The first end has a first end surface facing the retaining edge, and the non-circular outer peripheral wall abuts against the non-circular inner peripheral wall without sliding relative to the circumference, the distance of the recess to the central axis Less than the distance from the retaining edge to the central axis, each of the recesses overlaps a retaining edge from an axial view. When the distance between the first end surface and the inner edge of the sleeve end is not less than a predetermined distance, a driving head can be inserted and rotated. The driving head includes a first end having a plurality of axially extending abutting portions on the circumferential surface and a second end surface, the maximum distance of the abutting portion to the central axis being less than the retaining edge to The distance from the central axis of the abutting portion to the second end surface is not greater than the predetermined distance, and the first end is detachably inserted into the first end. When the respective abutting portions are rotated to the corresponding recesses, the corresponding recesses can be inserted, wherein the first end of the drive head can be passed through the first end faces and the retaining edges Restricted to the first end.

To achieve the above object, the present invention further provides a tool for replacing a drive head, comprising an outer kit and an inner kit. The outer sleeve defines a central axis, the outer sleeve has a set of inner end edges and a non-circular inner peripheral wall, and the inner edge of the sleeve end is provided with a plurality of corners and a plurality of retaining edges between the equiangular portions, The distance from the corner to the central axis is greater than the distance from the retaining edge to the central axis, wherein a first end of one of the driving heads is received in the outer sleeve, the first end having a plurality of axial extensions on the circumferential surface The abutting portion has a maximum distance from the abutting portion to the central axis that is smaller than a distance from the retaining edge to the central axis. Each of the abutting portions is opposite to a retaining edge. The inner kit has a non-circular outer peripheral wall and is detachably sleeved by the outer sleeve, the inner sleeve having a first end in the axial direction, the inner wall of the first end being provided with a plurality of axial extensions The card is concave, the distance of the card concave to the central axis is smaller than the distance from the retaining edge to the central axis, and the card recesses overlap with a retaining edge from the axial view, the first connecting end is recessed by the card The first end of the driving head is sleeved relative to the abutting portion, and each of the abutting portions is received in a corresponding recessed portion, and the non-circular outer peripheral wall and the non-circular inner peripheral wall are slidably offset from each other in a circumferential direction Pick up. The first end of the drive head is constrained in the first end by the first end and the retaining edges.

10‧‧‧Outer kit

11‧‧‧ center axis

12 ‧ ‧ end inner edge

13‧‧‧Non-circular inner peripheral wall

14‧‧‧ corner

15‧‧‧ 挡缘

20‧‧‧ inner kit

21‧‧‧Non-circular peripheral wall

22‧‧‧First end

23‧‧‧ card concave

24‧‧‧ first end face

25‧‧‧ step

30‧‧‧Drive head

30a‧‧‧Drive head

30b‧‧‧Drive head

311‧‧‧Abutment

31a‧‧‧Hexagonal column

31b‧‧‧Sleeve

31c‧‧‧ first end

312‧‧‧ second end

313‧‧‧Multi-angled spherical head

314‧‧‧ radial flange

315‧‧‧ second end

316‧‧‧ four-corner joint

32c‧‧‧Multi-angle straight rod

33c‧‧‧Corner

40‧‧‧Departure agency

41‧‧‧Resist

42‧‧‧ axial extension slot

43‧‧‧First positioning groove

30c‧‧‧ drive head

31‧‧‧ first end

44‧‧‧Second positioning groove

1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is an exploded view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 3A is a cross-sectional view of Figure 3 taken along line 3A-3A.

4 is another cross-sectional view of a preferred embodiment of the present invention.

Figure 4A is a cross-sectional view of Figure 4 taken along line 4A-4A.

5 and 6 are cross-sectional views of a preferred embodiment of the present invention.

Figure 7 is a cross-sectional view taken along line 7-7 of Figure 5.

Figure 8 is a cross-sectional view showing another preferred embodiment of the present invention.

Figure 9-11 is a perspective view of different drive heads.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to Figures 1, 2, 3, 3A, 4, and 4A, which show a preferred embodiment of the present invention, the replaceable drive head tool of the present invention includes an outer kit 10 and an inner kit 20.

The outer sleeve 10 defines a central axis 11 having a set of end inner edges 12 and a non-circular inner peripheral wall 13 (e.g., a hexagonal post), the end inner edge 12 being provided with a plurality of corners 14 and located A plurality of rims 15 between the equal angle portions 14 and a distance from the corner portions 14 to the central axis 11 are greater than a distance from the rim 15 to the central axis 11. In more detail, each of the retaining edges 15 is directly connected between the adjacent two corner portions 14, and each of the corner portions 14 is radially recessed into the sleeve inner edge 12 than the adjacent two retaining edges 15 .

The inner set 20 has a non-circular outer peripheral wall 21, specifically, the non-circular outer peripheral wall 21 corresponds to the size and shape of the non-circular inner peripheral wall 13. The inner sleeve 20 is detachably sleeved by the outer sleeve 10 and has a first end 22 located in the axial direction, the first end 22 The inner wall is provided with a plurality of axially extending latching recesses 23, and the first connecting end 22 has a first end surface 24 facing the retaining edges 15, the non-circular peripheral wall 21 being opposite to the non-circular inner peripheral wall 13 The circumferential direction abuts, and the distance between the recess 23 and the central axis 11 is smaller than the distance from the flange 15 to the central axis 11. When the distance between the first end surface 24 and the sleeve inner edge 12 is not less than a predetermined distance, a driving head 30 can be inserted and rotated, so that each of the latching recesses 23 overlaps with the retaining edge 15 from the axial direction. (As shown in Figures 4 and 4A).

The driving head 30 includes a first end 31 having a plurality of axially extending abutting portions 311 and a second end surface 312 on the circumferential surface, the largest of the abutting portions 311 to the central axis 11 The distance is less than the distance from the retaining edge 15 to the central axis 11, and the distance from the largest outer diameter of the abutting portion 311 to the second end surface 312 along the axial direction is not greater than the predetermined distance. In the embodiment, the first end 31 is provided with a polygonal spherical head 313 and a radial flange 314. The polygonal spherical head 313 and the radial flange 314 are formed into a neck-shaped shape. The driving head 30 is A second end 315 is formed with a four-corner joint 316 that can be coupled to a drive unit or to a tool such as a adapter, a screwdriver, or a variety of drill bits.

The first end 31 is detachably inserted into the first connecting end 22, and when the corresponding abutting portion 311 is rotated to the corresponding recess 23, a corresponding recess 23 can be inserted, wherein the first end The end face 24 and the rim 15 are adjacent to each other to restrict the first end 31 of the drive head 30 to the first end 22 through the rim 15 (as shown in Figures 4 and 4A).

The tool of the replaceable drive head further includes an abutting mechanism 40, and the abutting mechanism 40 includes a resisting body 41 retractably protruding from the non-circular inner peripheral wall 13 or the non-circular outer peripheral wall 21, The abutting body 41 abuts between the non-circular inner peripheral wall 13 and the non-circular outer peripheral wall 21. Preferably, the abutting mechanism 40 further includes a non-circular inner peripheral wall 13 and the non-circular shape. An axially extending groove 42 of one of the outer peripheral walls 21, the non-circular inner peripheral wall 13 and the non-circular outer peripheral wall 21 are further provided with the abutting body 41, and the abutting body 41 is movably disposed in the axially extending groove 42. The axially extending slot 42 preferably further includes at least one enlarged and deeper positioning slot portion, the at least one positioning slot portion including a first positioning slot portion 43 proximate the sleeve end inner edge 12 and a distance from the sleeve end The second positioning groove portion 44 of the inner edge 12, when the abutting body 41 is abutted against the first positioning groove portion 43, the distance between the first end surface 24 and the sleeve inner edge 12 is not less than the predetermined distance. When the resisting body 41 is abutted against the second positioning groove portion 44, the distance between the first end surface 24 and the sleeve end inner edge 12 is less than the predetermined distance. The abutment mechanism 40 can position the outer sleeve 10 and the inner kit 20 to each other at a predetermined position.

Preferably, the inner wall of the first end 22 of the inner sleeve 20 can be provided with a step surface 25 facing the first end 31 of the driving head 30. The radial flange 314 abuts against the sleeve inner edge 12 The second end surface 312 of the first end 31 abuts the step surface 25, so that the combination of the driving head 30 and the inner sleeve 20 and the outer sleeve 10 can be more stable, and can also be beneficial, for example, impact type. The application of the power tool is not easy to damage.

Referring to FIG. 8 and further referring to FIGS. 2 and 5, another embodiment of the tool for replacing the drive head of the present invention is described below, wherein the same components as those in the above embodiment are denoted by the same reference numerals, and the replaceable drive The head tool includes an outer kit 10 and an inner kit 20. The outer sleeve 10 defines a central axis 11 having a set of end inner edges 12 and a non-circular inner peripheral wall 13 having a plurality of corners 14 and at the corners 14 A plurality of retaining edges 15 , the distance from the corner portion 14 to the central axis 11 is greater than the distance from the retaining edge 15 to the central axis 11 , wherein a first end 31 of one of the driving heads 30 is received in the outer sleeve 10 The first end 31 has a plurality of axially extending abutting portions 311 on the circumferential surface, and the maximum distance from the abutting portion 311 to the central axis 11 is smaller than the distance from the retaining edge 15 to the central axis 11 Towards, each of the abutting portions 311 is opposed to a retaining edge 15. The inner sleeve 20 has a non-circular outer peripheral wall 21 and is detachably sleeved by the outer sleeve 10. The inner sleeve 20 has a first end 22 located in the axial direction, and the inner end of the first end 22 is provided a plurality of axially extending latching recesses 23, the distance from the latching recess 23 to the central axis 11 being less than the distance from the retaining edge 15 to the central axis 11, each of the latching recesses 23 and a retaining edge thereof The first end 22 is sleeved on the first end 31 of the driving head with respect to the abutting portion 311, and each of the abutting portions 311 is received in the corresponding recess 23 The non-circular outer peripheral wall 21 and the non-circular inner peripheral wall 13 are slidably abutted against each other in the circumferential direction. The first end 31 of the drive head can be restrained in the first end 22 by the first flange 22 and the flange 15 being adjacent to each other.

The tool of the replaceable drive head may further include an abutting mechanism 40, and the abutting mechanism 40 includes a retractable protrusion on the non-circular inner peripheral wall 13 or the non-circular outer peripheral wall 21 The body 41 is abutted between the non-circular inner peripheral wall 13 and the non-circular outer peripheral wall 21. The abutting mechanism 40 can be configured as described above and will not be described herein.

In practical use, for example, as shown in FIG. 3-6, the distance between the first end surface 24 and the sleeve inner edge 12 is not less than the predetermined distance, so that the first end 31 of the driving head can be inserted into the inner sleeve 20 The first connecting end 22 is rotated and the corresponding abutting portion 311 is corresponding to each of the engaging recesses 23 and the respective retaining edges 15 , and then the respective abutting portions 311 are rotated to the corresponding recesses 23 to be placed correspondingly. The card recess 23, and the outer sleeve 10 and the inner sleeve 20 are relatively close to each other, the flange 15 can limit the first end 31 of the driving head to the first end 22, when the radial protrusion When the edge is not abutted against the inner edge of the sleeve, the driving head pivots relative to the inner sleeve and the outer sleeve by pivoting the polygonal head. Alternatively, the first end 31 of the driving head can be first received in the outer sleeve 10, and each of the abutting portions 311 is opposite to the retaining edge 15 (as shown in FIG. 8), and then the outer sleeve 10 is Inside kit 20 relative to the sleeve 15, the first end 31 of the drive head can be restrained in the first end 22 (as shown in Figures 5 and 6).

The driving head to which the present invention is applied may be a multi-angled spherical head type as described above, or may be a driving head 30a of a tool for replacing the driving head as shown in FIG. 9, and the second end of the driving head 30a is formed with a hexagon. Column 31a (can be used as a hex wrench). It is to be understood that, in the driving head 30b of the tool of the replaceable driving head of the embodiment shown in FIG. 10, the second end of the driving head 30b can be formed as a sleeve 31b, but not limited thereto. It can also be formed as a working head such as a screwdriver bit or a drill bit. The driving head 30c shown in FIG. 11 is provided with a polygonal straight rod 32c at a first end 31c, wherein the angled portion 33c of the polygonal straight rod 32c overlaps with a retaining edge when viewed from the axial direction. The drive head 30c is prevented from coming out of the inner kit.

In summary, simply by the outer sleeve and the non-circular peripheral wall of the inner sleeve, the respective retaining edges and the abutting portions of the driving head can be restrained, thereby preventing the driving head from being The effect of removing the inner kit and facilitating replacement has fewer components, simple structure and easy assembly.

In addition, the outer sleeve is sleeved with the non-circular peripheral wall of the inner sleeve, and has better structural strength, and is less susceptible to breakage under high speed or/and large torque operation.

In addition, the driving head of the tool for replacing the driving head of the present invention can be pivoted relative to the inner sleeve and the outer sleeve, so that the driving head can be conveniently used in a place where it is difficult to enter, thereby loading and unloading the locking firmware (such as screws, bolts, etc.) The important thing is that the angled portions of the drive head are restricted by the corresponding retaining edges and do not come out at random, and there is no problem of poor work efficiency, interruption of work, or even danger.

In summary, the overall structural design, practicality and efficiency of the present invention are indeed It is fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so its "novelty" should be undoubted, and the invention can be more effective than the conventional structure. It also has "progressiveness". It fully complies with the requirements of the application requirements for invention patents in China's Patent Law. It is a patent application filed in accordance with the law and is subject to the early review and affirmation.

11‧‧‧ center axis

12 ‧ ‧ end inner edge

13‧‧‧Non-circular inner peripheral wall

14‧‧‧ corner

15‧‧‧ 挡缘

20‧‧‧ inner kit

21‧‧‧Non-circular peripheral wall

22‧‧‧First end

23‧‧‧ card concave

24‧‧‧ first end face

31‧‧‧ first end

311‧‧‧Abutment

313‧‧‧Multi-angled spherical head

315‧‧‧ second end

316‧‧‧ four-corner joint

41‧‧‧Resist

42‧‧‧ axial extension slot

Claims (10)

A tool for replacing a drive head, comprising: an outer sleeve defining a central axis, the outer sleeve having a set of end inner edges and a non-circular inner peripheral wall having a plurality of corners at an inner edge of the sleeve end And a plurality of retaining edges between the corner portions, the corner portion having a distance from the central axis greater than a distance from the retaining edge to the central axis; an inner sleeve having a non-circular outer peripheral wall detachably The outer sleeve sleeve has a first connecting end located opposite to the axial direction, and the inner wall of the first connecting end is provided with a plurality of axially extending latching recesses, and the first connecting end has a facing edge a first end surface, the non-circular outer peripheral wall and the non-circular inner peripheral wall are slidably abutted against the circumferential direction, and the distance from the recess to the central axis is smaller than the distance from the retaining edge to the central axis, which is viewed from the axial direction. Each of the card recesses overlaps with a retaining edge; wherein, when the first end face and the inner edge of the sleeve end are not less than a predetermined distance, a driving head is inserted and rotated; wherein the driving head includes a first One end, the first end has a majority of axial extension on the circumferential surface The abutting portion and a second end surface, the maximum distance of the abutting portion to the central axis is smaller than the distance from the retaining edge to the central axis, and the maximum outer diameter of the abutting portion along the axial direction to the second The distance between the end faces is not greater than the predetermined distance, and the first end is detachably inserted into the first connecting end, and when the respective abutting portions are rotated to the corresponding recesses, the corresponding recesses can be inserted, wherein The first end of the drive head is constrained in the first end by the first end face and the retaining edges being adjacent to each other. The tool of the replaceable drive head according to claim 1, further comprising an abutting mechanism, wherein the abutting mechanism comprises a resisting body that is retractably protruded from the non-circular inner peripheral wall or the non-circular outer peripheral wall, The abutting body abuts between the non-circular inner peripheral wall and the non-circular outer peripheral wall. The tool of the replaceable drive head of claim 2, wherein the abutting mechanism further comprises an axially extending groove formed in one of the non-circular inner peripheral wall and the non-circular outer peripheral wall, the non-circular inner peripheral wall and The other of the non-circular outer peripheral walls is provided with the abutting body, and the abutting body is movably disposed in the axially extending groove. The tool of the replaceable drive head of claim 3, wherein the axially extending groove further comprises at least one enlarged and deeper positioning groove portion. The tool of the replaceable drive head of claim 4, wherein the at least one positioning groove portion comprises a first positioning groove portion adjacent to the inner edge of the sleeve end and a second positioning groove portion remote from the inner edge of the sleeve end, When the contact body is in the first positioning groove portion, the distance between the first end surface and the inner edge of the sleeve end is not less than the predetermined distance, and when the contact body is abutted on the second positioning groove portion, the first The distance between an end surface and the inner edge of the sleeve end is less than the predetermined distance. A tool for replacing a drive head, comprising: an outer sleeve defining a central axis, the outer sleeve having a set of end inner edges and a non-circular inner peripheral wall having a plurality of corners at an inner edge of the sleeve end And a plurality of retaining edges between the corner portions, the corner portion having a distance from the central axis greater than a distance from the retaining edge to the central axis, wherein a first end of one of the driving heads is received in the outer sleeve, The first end has a plurality of axially extending abutting portions on the circumferential surface, and the maximum distance from the abutting portion to the central axis is smaller than the distance from the retaining edge to the central axis, which is viewed from the axial direction. a portion opposite to a retaining edge; an inner sleeve having a non-circular outer peripheral wall detachably sleeved by the outer sleeve, having a first end in the axial direction, the inner wall of the first end a plurality of axially extending card recesses, the card being recessed to the central axis by a distance less than a distance from the retaining edge to the central axis, the axial recesses, each of the latching recesses overlapping a retaining edge, the first connection The end of the card is concave relative to the angle And abutting on the first end of the driving head, each of the abutting portions is received in a corresponding recessed portion, and the non-circular outer peripheral wall is non-circularly slidably abutted against the non-circular inner peripheral wall; wherein The first end is adjacent to the retaining edges, and the first end of the driving head is restricted in the first end through the retaining edges. The tool of the replaceable drive head of claim 6, further comprising an abutting mechanism, the receiving mechanism comprising a retractable protrusion protruding from the non-circular inner peripheral wall or the non-circular outer peripheral wall, The abutting body abuts between the non-circular inner peripheral wall and the non-circular outer peripheral wall. The tool of the replaceable drive head according to any one of claims 1 to 7, wherein the first end is provided with a polygonal spherical head and a radial flange, wherein: when the radial flange abuts the sleeve When the inner edge of the end is fixed, the driving head is fixed to the inner sleeve and the outer sleeve; when the radial flange does not abut the inner edge of the sleeve end, the driving head is pivoted by the polygonal spherical head The inner kit and the outer kit are pivoted. The tool of the replaceable drive head of claim 8, wherein the inner wall of the first end is provided with a step facing the first end of the drive head, the radial flange abutting the inner edge of the sleeve The end surface of the first end abuts the step surface. The tool of the replaceable drive head of any of claims 1 to 7, wherein the first end is provided with a polygonal straight rod.