TWI482689B - Driving head-changeable too - 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 replaceable drive head tool comprising an outer kit, an inner kit and a latch mechanism. The outer sleeve defines a central axis, the outer sleeve has a set of end inner edges and a chute is circumferentially disposed, the inner end of the sleeve end being 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. The inner sleeve is coaxially sleeved by the outer sleeve in a relatively rotatable manner, and has a first connecting end and a second connecting end opposite to each other in the axial direction, and the inner wall of the first connecting end is provided with a plurality of axially extending cards Concave, the card is recessed to the central axis by a distance less than the distance from the rim to the central axis. The latching mechanism is disposed in the inner sleeve and extends into the sliding slot and is operable to be positioned between a locked position and a released position relative to the sliding slot. Wherein, from the axial view, when the latching mechanism is in the locked position, the outer sleeve and the inner sleeve are not rotatable relative to each other, and each of the latching recesses overlaps with a retaining edge when the latching mechanism is located at the release In position, the outer sleeve and the inner sleeve are relatively rotatable, and each of the card recesses corresponds to a corner portion.

1‧‧‧Replaceable drive head tool

10‧‧‧Outer kit

11‧‧‧ center axis

12 ‧ ‧ end inner edge

13‧‧‧Chute

131‧‧‧ Large diameter slot

132‧‧‧ Small diameter slot

14‧‧‧ corner

15‧‧‧ 挡缘

16‧‧‧ Ring depression

32‧‧‧Operating parts

321‧‧‧Card

322‧‧‧ inserted section

323‧‧‧ Large diameter section

324‧‧‧Small path

40‧‧‧ drive head

40a‧‧‧Drive head

40b‧‧‧Drive head

40c‧‧‧ drive head

41‧‧‧ first end

17‧‧‧Multi-angle slot

20‧‧‧ inner kit

21‧‧‧First end

22‧‧‧second end

23‧‧‧ card concave

24‧‧‧Setting holes

25‧‧‧ card edge

26‧‧ ‧ step

30‧‧‧Card institutions

31‧‧‧Flexible parts

41b‧‧‧ first end

411‧‧‧Multi-angle ball head

412‧‧‧radial flange

42‧‧‧second end

420‧‧‧ four-corner joint

421‧‧‧ hexagonal column

422‧‧ ‧ sleeve

43‧‧‧Abutment

44‧‧‧Multi-angle straight rod

45‧‧‧Abutment

1 and 2 are perspective views of a preferred embodiment of the present invention.

3 and 4 are exploded views of a preferred embodiment of the present invention.

5 and 6 are side views of a preferred embodiment of the present invention.

7 and 8 are cross-sectional views of a 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 1-6, there is shown a preferred embodiment of the present invention. The replaceable drive head tool 1 of the present invention includes an outer kit 10, an inner kit 20 and a latch mechanism 30.

The outer sleeve 10 defines a central axis 11 having a set of end inner edges 12 and a slot 13 extending circumferentially therewith. The sleeve inner edge 12 is provided with a plurality of corners 14 and is located at the same angle A plurality of ribs 15 between the portions 14 have a distance from the corner portion 14 to the central axis 11 that is 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 corner portion 14 is a corner portion, and is not limited to an angle. For example, in the embodiment, each of the corner portions 14 is an arcuate recess, but may be a pointed recess, and the corner portion 14 can provide a corner. Tools such as drive heads, adapters, screwdrivers, and various drill bits are easy to insert. The sleeve inner edge 12 further includes a ring recess 16 such that the sleeve inner edge 12 has a beveled or stepped configuration. The chute 13 includes a large diameter slot 131 at one end and a long diameter slot 131 The small diameter groove 132 is clearly defined as the arcuate arc shape, and the small diameter groove 132 is substantially one straight groove of equal width, preferably, compared with the central axis 11, The circumferential arc of the chute 13 is determined according to the number of the equiangular portions 14 and the retaining edges 15 . For example, when the number of the equiangular portions 14 and the retaining edges 15 is six, the chute The extension arc can be 30 degrees (and of course more than 30 degrees), so that the relative position of the outer sleeve 10 and the inner sleeve 20 can be controlled. The other end of the outer sleeve 10 is opposite to the other end of the sleeve inner edge 12, and a polygonal slot 17 is defined. The multi-angle slot 17 can be connected by a driving device. The driving device can be an electric or pneumatic driving device or an open-end wrench. A hand tool such as a socket wrench or a screwdriver, but the multi-angle groove 17 can also be inserted into a tool such as a driving head, a joint, a screwdriver, and various drills.

Further, with reference to FIG. 7 and FIG. 8 , the inner sleeve 20 is coaxially sleeved relative to the outer sleeve 10 , and has a first connecting end 21 and a second connecting end 22 opposite to each other in the axial direction. The inner wall of the first end 21 is recessed with a plurality of axially extending latching recesses 23, the distance of the latching recess 23 from the central axis 11 being less than the distance of the retaining rim 15 to the central axis 11. The card recesses 23 can provide a tool such as a drive head, a adapter, a screwdriver, a variety of drill bits and the like to facilitate the insertion of the flashing space, and the card edges 25 are accessible to the inserted tool. It can be understood that if the first terminal end 21 and the sleeve inner edge 12 are assembled with a driven member such as a screwdriver or a drill bit, the polygonal slot 17 is for assembling, for example, an electric or pneumatic driving device; If the first terminal end 21 and the sleeve inner edge 12 are assembled, for example, by an electric or pneumatic driving device, the polygonal groove 17 is for assembling a driven member such as a screwdriver or a drill. The inner sleeve 20 is further provided with a mounting hole 24 and has a card edge 25 extending radially inwardly from the edge of the opening of the mounting hole 24.

The latching mechanism 30 is radially disposed in the inner sleeve 20 and extends into the sliding slot 13 and is operable to be positioned between the locked position and a released position relative to the sliding slot 13. Detailed The latching mechanism 30 includes an elastic member 31 and an operating member 32 disposed in the mounting hole 24. The peripheral surface of the operating member 32 is provided with a locking portion 321 into which the end of the operating member 32 is inserted. And the elastic member 31 is abutted, and the locking portion 321 is located in the installation hole 24 and can be resisted by the card edge 25 . More specifically, the operating member 32 includes an insertion section 322, a large diameter section 323 and a small diameter section 324. The radial dimension of the insertion section 322 is larger than the large diameter section 323 and the large diameter The segment 323 forms a class portion as the locking portion 321, and the insertion portion 322 is inserted into the installation hole 24. More specifically, the large diameter section 323 of the operating member 32 protrudes from the inner circumference of the inner sleeve 20, and the small diameter section 324 extends from the large diameter section 323. The size of the large diameter section 323 is not larger than the large diameter section 323. The slot width of the slot 131 is greater than the slot width of the small-diameter slot 132, and the size of the small-diameter section 324 is not greater than the slot width of the small-diameter slot 132, wherein, when viewed from the axial direction, when the latch mechanism 30 is located In the locked position, the large diameter section 323 is located in the large diameter slot 131. When the latching mechanism 30 is in the release position, the small diameter section 324 is located in the small diameter slot 132.

The tool 1 for a replaceable drive head of the present invention may further include a drive head 40 including a first end 41 and a second end 42 having a plurality of axial directions on the circumferential surface. An extended abutting portion 43 , the first end 41 is detachably inserted into the first connecting end 21 , and the maximum distance from the abutting portion 43 to the central axis 11 is smaller than the retaining edge 15 to the central axis 11 The distance. In this embodiment, the first end 41 is provided with a polygonal spherical head 411 and a radial flange 412. The polygonal spherical head 411 and the radial flange 412 are formed into a necked shape, and the second end 42 is formed. Forming a four-corner joint 420, the four-corner joint 420 can be connected by a driving device, which can be an electric or pneumatic driving device, or a hand tool such as an open end wrench, a socket wrench, a screwdriver, etc., but the four-corner joint 420 is also It can be connected to tools such as adapters, screwdrivers, and various drill bits.

In addition, in the driving head 40a of the tool of the replaceable driving head of the embodiment shown in FIG. 9, the second end of the driving head 40a is formed with a hexagonal column 421 (which can be used as a hexagonal wrench). It is to be understood that, in the driving head 40b of the tool of the replaceable driving head of the embodiment shown in FIG. 10, the second end of the driving head 40b can be formed as a sleeve 422, but not limited thereto. It can also be formed as a working head such as a screwdriver bit or a drill bit.

In practical use, when the latching mechanism 30 is in the locked position, the elastic member 31 elastically projects the operating member 32 such that the large diameter section 323 is normally located in the large diameter slot 131 (as shown in FIGS. 1 and 2). The outer sleeve 10 and the inner sleeve 20 are not rotatable relative to each other, wherein each of the latching recesses 23 overlaps with a retaining edge 15 (as shown in FIGS. 5 and 8); when the operation is pressed The member 32 causes the large diameter section 323 to exit the large diameter slot 131 and move the operating member 32 such that the small diameter section 324 is located in the small diameter slot 132 (as shown in FIG. 3), and the latching mechanism 30 is located therein. In the release position, the outer sleeve 10 and the inner sleeve 20 are relatively rotatable, and each of the latching recesses 23 corresponds to a corner portion 14 (as shown in FIGS. 6 and 7).

Taking the driving head 40 provided with the polygonal ball head 411 and the radial flange 412 as an example, when the latching mechanism 30 is located at the releasing position and each of the latching recesses 23 corresponds to a corner portion 14 Each of the abutment portions 43 of the drive head 40 is allowed to enter the inner set 20. When the radial flange 412 abuts against the sleeve inner edge 12 (as shown in FIG. 1 ), the driving head 40 is fixed to the inner sleeve 20 and the outer sleeve 10 to prevent the driving head 40 from being When used, there is a problem of shaking, low work efficiency, unfavorable user force, etc.; when the radial flange 412 does not abut the sleeve inner edge 12 (as shown in FIG. 2), the driving head 40 is opposite to the The inner sleeve 20 and the outer sleeve 10 are pivoted, so that the driving head 40 can be conveniently used in a place where it is difficult to enter, thereby performing the work of loading and unloading the lock fasteners (such as screws, bolts, etc.); from the axial view, when the card The mechanism 30 is located in the lock When the position is fixed, each of the abutting portions 43 overlaps with the retaining edge 15 (as shown in FIGS. 5 and 8 ). Thus, each of the abutting portions 43 can be restricted by the corresponding retaining edge 15 to drive the drive. The head 40 cannot be freely detached from the inner set 20, so that the drive head 40 is fixed to the inner set 20 and the outer set 10, or can be pivoted relative to the inner set 20 and the outer set 10. In the state, the driving head 40 can be prevented from coming out of the inner kit 20, resulting in a problem of inefficient work, interruption of work, and even danger.

Preferably, the inner wall of the first end 21 of the inner sleeve 20 can be provided with a step surface 26 facing the first end 41 of the driving head 40, and the radial flange 412 abuts against the sleeve inner edge 12 The end surface of the first end 41 abuts the step surface 26, so that the combination of the driving head 40 and the inner sleeve 20 and the outer sleeve 10 can be more stable, and can also be facilitated, for example, by an impact power tool. Application is not easy to damage.

The driving head to which the present invention is applied may include a polygonal spherical head shape as described above, or may be as shown in FIG. 11. For example, the driving head 40c shown in FIG. 11 is provided with a polygonal straight rod 44 at a first end 41b. Referring to FIG. 5 and FIG. 11 , from the axial view, when the latching mechanism 30 is in the locked position, the abutting portions 45 of the multi-angle straight rod 44 overlap with the retaining edge 15 to avoid the driving head. 40c is removed from the inner kit 20.

In summary, the relative rotation of the outer sleeve and the inner sleeve can change the corresponding relationship between the respective retaining edges and the abutting portions of the driving head, thereby preventing the driving head from coming out of the inner sleeve and facilitating replacement. The effect.

Moreover, 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 driver’s head The corners are limited by the corresponding retaining edges and do not come out at will, and there is no problem of poor work efficiency, interruption of work, or even danger.

In addition, the tool for replacing the drive head of the present invention has the advantages of fewer components, simple structure, and easy assembly.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is filed according to law, and please The bureau will review it early and give it affirmation.

10‧‧‧Outer kit

20‧‧‧ inner kit

30‧‧‧Card institutions

40‧‧‧ drive head

Claims (11)

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 chute extending circumferentially, the inner end of the sleeve having a majority a corner portion 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; and an inner sleeve coaxially sleeved by the outer sleeve a first connecting end and a second connecting end opposite to each other in the axial direction, wherein the inner wall of the first connecting end is provided with a plurality of axially extending latching recesses, the recess of the latching recess to the central axis is smaller than the blocking a distance from the central axis; a latching mechanism disposed in the inner sleeve and extending into the chute, operable to be positioned between the locked position and a released position relative to the chute; wherein, the self-axial In view, when the latching mechanism is in the locked position, the outer sleeve and the inner sleeve are not relatively rotatable, and each of the latching recesses overlaps with the retaining edge, and when the latching mechanism is in the release position, the outer sleeve And the inner kit are relatively rotatable and each of the cards And a portion corresponding to the corner. The tool of the replaceable drive head according to claim 1, wherein each of the retaining edges is directly connected between the adjacent two corner portions, each of the corner portions being radially concave compared to the adjacent two retaining edges. The inner edge of the sleeve. The tool of the replaceable drive head of claim 1, wherein the inner set has a set hole and has a card edge extending radially inward from the edge of the set hole, the latch mechanism including a An elastic member and an operating member are disposed in the hole, and a locking portion is disposed on a circumferential surface of the operating member, and the operating member is inserted into the setting hole at one end and abuts the elastic member, and the locking portion is located in the setting hole and can be The card edge is resisted. The tool of the replaceable drive head of claim 3, wherein the operating member comprises an insertion section, a large diameter section and a small diameter section, the radial dimension of the insertion section being larger than the large diameter section and A step portion is formed with the large diameter portion, and the step portion serves as the locking portion, and the insertion portion is inserted into the installation hole. The tool of the replaceable drive head according to claim 1, wherein the chute comprises a large diameter groove at one end and a small diameter groove extending from the large diameter groove, and the latching mechanism comprises a slot provided in the chute The operating member has a large diameter section protruding from a circumferential surface of the inner sleeve and a small diameter section extending from the large diameter section, and the large diameter section is not larger than the large diameter groove The slot width is greater than the slot width of the small-diameter slot, and the size of the small-diameter section is not greater than the slot width of the small-diameter slot, wherein, from the axial view, when the latching mechanism is located at the locked position, the large diameter The segment is located in the large diameter groove; when the locking mechanism is in the release position, the small diameter segment is located in the small diameter groove. The tool of the replaceable drive head of claim 1, wherein the inner edge of the sleeve further comprises a ring recess. The tool of the replaceable drive head of any of claims 1-6, further comprising a drive head, the drive head including a first end and a second end, the first end being on the circumference The plurality of axially extending abutting portions are detachably inserted into the first connecting end, 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. The tool of the replaceable drive head of claim 7, wherein the first end is provided with a polygonal ball head and a radial flange, wherein: when the radial flange abuts the inner edge of the sleeve end, 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 Pointing and pivoting relative to the inner sleeve and the outer sleeve; from the axial view, when the latching mechanism is in the locked position, each of the abutting portions overlaps with the retaining edge. 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 claim 7, wherein the first end is provided with a multi-angle straight rod, which is viewed from the axial direction, and when the latching mechanism is in the locked position, each of the abutting portions and the same The retaining edges overlap. The tool of the replaceable drive head of claim 10, 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.