TW201500153A - Driving head-changeable tool and sleeve assembly thereof - Google Patents

Abstract

A driving head-changeable tool is provided, including a tool set and a driving head. The tool set includes a connecting sleeve, an outer sleeve and at least one limitation member. The connecting sleeve has a receiving slot and a driving end corresponding to each other. A plurality of protruding ribs extending axially and a plurality of recessed slots disposed between the protruding ribs are disposed on an inner wall of the receiving slot. The recessed slots of the receiving slot are provided for a polygonal ball head of a driving head to insert therein. The outer sleeve is axially slidably telescoped around the connecting sleeve, and the outer sleeve and the connecting sleeve are mutually restricted. A recessed portion and a protruding portion are disposed on the inner wall. The outer sleeve is slidable between a first position and a second position relative to the connecting sleeve. The limitation member is formed with one the protruding rib and optionally protrudes out of the receiving slot. When the outer sleeve is at the first position, the protruding portion abuts against the limitation member and protrudes out of the receiving slot, and the limitation member can block and restrict the polygonal ball head in the receiving slot. When the outer sleeve is at the second position, the recessed portion corresponds to the limitation member which can get in and out of the recessed portion, and the polygonal ball head can retreat from the receiving slot.

Description

Replaceable drive head tool and its set

The present invention relates to a tool and a kit thereof 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 rotated and closed. Department, in order to improve the shortcomings such as the structure of TW566284.

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.

Although there is a two-stage joint tool for inserting a polygonal ball head into a receiving groove in a normal state, when a plurality of specifications of the driving member are to be replaced and the driving head needs to be replaced, the entire set of tools must be replaced. Replacing only the drive head requires not only the purchase of a large number of sets of tools, but also time-consuming and labor-intensive work, and there are drawbacks that need to be improved.

Therefore, it is necessary to provide a novel and progressive replaceable drive head tool and its set to solve the above problems.

The main object of the present invention is to provide a tool for replacing a driving head and a set thereof, which can quickly perform the replacement operation of the driving head, and has the advantages of simple components, easy manufacture and assembly, greatly reduced friction resistance, convenient operation, and large Improve work efficiency; it can solve the problem that the conventional structure will lock the card when rotating at high speed.

To achieve the above object, the present invention provides a tool set for a replaceable drive head, comprising a sleeve, a jacket and at least one restraining member. The sleeve is provided with a corresponding receiving groove and a driving end, and the inner wall of the receiving groove is provided with a plurality of axially extending ribs and a plurality of grooves between the ribs, in a radial section Each of the ribs has a convex arc connected between the two grooves, and the extension of any adjacent two convex arcs does not intersect the range of the ferrule, and the grooves of the accommodating groove are provided for a driving head A polygonal ball head is inserted. The outer sleeve is axially coupled to the outer sleeve The outer wall is provided with a recess and a convex portion protruding relative to the recess, and the outer sleeve is slidable relative to the sleeve in a first position and a second position. The limiting member is disposed on one of the ribs and disposed between the sleeve and the outer sleeve to selectively protrude from the receiving groove. Wherein, when the outer sleeve is in the first position, the convex portion abuts the limiting member and protrudes into the receiving groove, and the limiting member can block the polygonal spherical head blocking in the receiving groove; The outer sleeve is located at the second position, the recess is retractable into the recess relative to the restricting member, and the polygonal ball head can be withdrawn from the receiving groove.

In order to achieve the above object, the present invention further provides a tool for replacing a drive head, comprising a tool set of a replaceable drive head as described above, and a drive head having a polygonal head and a set The drive head is removably inserted into the receiving groove of the socket in a radial flange opposite to the upper of the polygonal head.

1,1a, 1b, 1c‧‧‧ replaceable drive head tool set

2‧‧‧Replaceable drive head tool

10,10a‧‧‧

11,11a‧‧‧ accommodating slots

12‧‧‧Driver

13‧‧‧ rib

131‧‧‧ convex arc

14‧‧‧ Groove

15‧‧‧First annular guide

16‧‧‧ Shoulder

17‧‧‧ Third Order Department

21,21a‧‧‧ positioning rim

211‧‧‧ first-order department

22‧‧‧ recess

23‧‧‧ convex

24‧‧‧second annular guide

30‧‧‧Restrictions

40, 40a‧‧‧ drive head

41‧‧‧Multi-angled spherical head

42,42a‧‧‧radial flange

421‧‧‧ second-order department

50‧‧‧Flexible parts

20, 20a, 20b‧‧‧ coat

60‧‧‧ Limit ring

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.

3 to 5 are cross-sectional views showing a preferred embodiment of the present invention.

6 to 9 are schematic views showing the use of a preferred embodiment of the present invention.

10 to 11 are schematic views of another preferred embodiment of the present invention.

12 to 13 are schematic views of still another preferred embodiment of the present invention.

14 to 15 are schematic views of still another preferred embodiment of the present invention.

In the following, only possible embodiments of the present invention will be described by way of examples, but not limited thereto. The scope of the invention to be protected is described in advance.

Referring to FIGS. 1 through 6, there is shown a preferred embodiment of the present invention. The tool set 1 of the replaceable drive head of the present invention includes a sleeve 10, a jacket 20 and at least one restriction member 30.

The ferrule 10 is provided with a plurality of accommodating grooves 11 and a driving end 12, and the inner wall of the accommodating groove 11 is provided with a plurality of axially extending ribs 13 and a plurality of grooves between the ribs 13 14. In a radial section, each of the ribs 13 has a convex arc 131 connected between the two grooves 14. In other words, the ends of each of the grooves 14 are straight or recurved. Two adjacent convex arcs 131 are connected. Furthermore, the extension of any adjacent two convex arcs 131 does not intersect the range of the socket 10 (as shown in FIGS. 4 and 5), that is, each of the ribs 13 has a curved surface with a large radius of curvature. It can reduce contact friction and facilitate relative motion. The grooves 14 of the accommodating groove 11 are inserted into a polygonal ball head 41 of a driving head 40. The driving head 40 further includes a radial flange 42 disposed opposite the polygonal ball head 41. The polygonal ribs 41 of the driving head 40 are rotated in the accommodating groove 11 because each of the ribs 13 has a curved surface with a large radius of curvature. Preferably, the ferrule 10 is provided with a first annular guide angle 15 along the edge of the notch of the accommodating groove 11. The first annular guide angle may be inclined or may be designed to be curved. The first annular guide angle 15 further contributes to the rotation and yaw angle of the drive head 40. In this embodiment, the driving end 12 is configured as a polygonal connecting hole for inserting a joint (for example, a joint of a rotating tool), but it can also be provided as a connecting hole (for example, a rotating tool) Hole) The polygonal post that is socketed.

The outer sleeve 20 of the outer sleeve 20 is coupled to the outer sleeve of the sleeve 10 , and the outer sleeve 20 is slidable relative to the sleeve 10 in a first position and a second position. The sleeve 20 has a positioning sleeve 21 extending radially at one end thereof, and a concave portion 22 and a convex portion 23 protruding from the concave portion 22 on the inner wall. In the radial direction, the size of the set of mouths defined by the positioning sleeve 21 is not It is smaller than the notch of the accommodating groove 11. In this embodiment, the positioning sleeve edge 21 and the receiving groove 11 form a step shape, so that the rotation and the yaw angle of the driving head 40 are not affected. Preferably, the outer sleeve 20 is provided with a second annular guide angle 24 along the edge of the sleeve of the positioning sleeve 21, and the first and second annular guide angles 15, 24 are arranged inside and outside and are stepped, thus It helps the rotation of the drive head 40 and the yaw angle.

In the present embodiment, an elastic member 50 is abutted between the sleeve 10 and the outer sleeve 20, and the elastic member 50 is, for example but not limited to, a coil spring and sleeved between the sleeve 10 and the outer sleeve 20. The two ends of the elastic member 50 are respectively elastically attracted to the socket 10 and the outer casing 20, so that the socket 10 and the outer casing 20 have a tendency to be away from each other. Specifically, the outer sleeve 20 is tightly sleeved with a limiting ring 60 on one end inner wall, and the sleeve 10 has a shoulder portion 16 extending radially. The elastic member 50 is elastically biased against the limiting ring 60. Between the shoulders 16. The limiting ring 60 is not in contact with the socket 10, so that the socket 10 and the outer casing 20 can slide relative to each other in a limited position.

In the present embodiment, the number of the restricting members 30 is three, but may be one, two or three or more. Preferably, the limiting members 30 are equiangularly distributed, and the limiting members 30 are disposed on one of the ribs 13 and disposed between the ferrule 10 and the outer sleeve 20. The limiting member 30 is selectively The ground protrudes from the accommodating groove 11. In more detail, the limiting member 30 is a ball, and the limiting member 30 is received in one of the through holes of the socket 10 and can be moved in the through hole. However, the limiting member 30 can also be other non-spherical structures, as long as A limited effect can be provided.

With reference to FIG. 7 to FIG. 9 , when the outer sleeve 20 is in the first position ( FIGS. 6 and 7 ), the convex portion 23 abuts the restricting member 30 and protrudes from the receiving groove 11 . The limiting member 30 can block the polygonal spherical head 41 in the accommodating groove 11 (because the radial distance between the convex portion 23 and the inner wall of the ferrule 10 is smaller than the maximum radial direction of the polygonal spherical head 41) ruler The drive head 40 cannot be detached from the accommodating slot 11; when the outer sleeve 20 is in the first position and the radial flange 42 is limited to the ferrule by the locating sleeve 21 (see FIG. The driving head 40 is non-rotatable relative to the socket 10, and the driving head 40 can be restricted from pivoting relative to the socket 10; when the casing 20 is in the first position and the radial flange 42 is not located When the mouth is in the middle (as shown in FIG. 7), the driving head 40 pivots relative to the socket 10 by using the polygonal ball head 41 as a pivot point; when the outer casing 20 is in the second position (as shown in FIG. 8), the concave portion The restricting member 30 can be retracted into the recess 22 with respect to the restricting member 30, and the polygonal ball head 41 can be withdrawn from the receiving groove 11 or inserted into the receiving groove 11 (because the convex portion is at this time) The radial distance between the inner wall of the ferrule 10 and the inner wall of the ferrule 10 is greater than the maximum radial dimension of the polygonal spherical head 41; when the polygonal spherical head 41 is removed from the accommodating groove 11, the elastic member 50 makes the ferrule 10 and the The outer sleeve 20 is automatically reverted to the first position (Fig. 9).

In another preferred embodiment as shown in Figures 10 and 11, the outer casing 20a of the tool set 1a of a replaceable drive head has a locating sleeve 21a, wherein the locating sleeve 21a is at least axially viewed. Partially overlapped between a radial flange 42 of a drive head 40 and a sleeve 10. More specifically, one of the top edges of the positioning sleeve 21a is recessed with a first step 211 disposed along the edge of the sleeve of the positioning sleeve 21a. Thereby, when the outer casing 20a is moved toward the second position, the driving head 40 can be removed at the same time to facilitate replacement of the driving head 40.

It can be understood that, in another preferred embodiment as shown in FIGS. 12 and 13, the tool set 1b of the replaceable drive head can also be recessed on one of the radial flanges 42a of one of the drive heads 40a. A second step portion 421 is provided, wherein the second step portion 421 is at least partially overlapped with a positioning sleeve 21 of one of the outer sleeves 20 such that when the outer sleeve 20 is moved toward the second position, At the same time, the driving head 40a is removed from the home position to facilitate replacement of the driving head 40a.

In still another preferred embodiment, as shown in FIGS. 14 and 15, a top end surface of one of the sockets 10a of the tool set 1c of the replaceable drive head is recessed with a third step portion 17, which is a third step portion 17 Along the inner edge of the notch of the receiving groove 11a of the socket 10a, when the outer casing 20b of the tool set 1c of the replaceable driving head is located at the first position and the radial flange 42 of the driving head 40 is limited In the third step portion 17 (as shown in FIG. 14), the driving head 40 is non-rotatable relative to the socket 10a; when the outer casing 20b is in the first position and the radial flange 42 is not located in the first portion In the third step portion 17 (as shown in FIG. 15), the driving head 40 pivots relative to the socket 10a by pivoting the polygonal ball head 41.

The invention further provides a tool 2 for replaceable drive head, the tool 2 of the replaceable drive head comprising a tool set 1, 1a, 1b, 1c of any replaceable drive head as described above, the replaceable drive head The tool 2 further includes a driving head 40 having a polygonal spherical head 41 and a radial flange 42 disposed opposite the polygonal spherical head 41. The driving head 40 is removably inserted. In the receiving slot 11 of the socket 10.

Through the above structure, the replacement operation of the driving head can be quickly performed through the relative sliding of the outer sleeve and the sleeve, which is convenient and fast, and the tool of the replaceable driving head and the kit member thereof are simple and easy. Manufacturing and assembly.

Moreover, since the inner wall of the accommodating groove has a plurality of ribs, and the ribs have a curved surface (contact surface) having a large radius of curvature, they are substantially only in point contact and not in surface contact with the polygonal spherical head. And the ribs are spaced apart to provide a space for the multi-angled spherical head to swing, so that the driving head can pivot smoothly with respect to the splicing sleeve, and completely solve the problem that the conventional structure will lock when rotating at a high speed. The problem of dead card, and due to the large reduction of frictional resistance, can be more convenient for the user to operate, and greatly improve work efficiency.

In addition, the radial flange of the outer casing or the driving head may be further provided with a stepped structure that can overlap each other. When the outer casing moves toward the second position, the driving head can be removed at the same time to facilitate replacement of the driving head. .

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‧‧‧ Socket

13‧‧‧ rib

14‧‧‧ Groove

20‧‧‧ coat

21‧‧‧ positioning rim

30‧‧‧Restrictions

40‧‧‧ drive head

41‧‧‧Multi-angled spherical head

42‧‧‧radial flange

50‧‧‧Flexible parts

60‧‧‧ Limit ring

Claims (12)

A tool set for a replaceable drive head, comprising: a sleeve, a relative receiving groove and a driving end; the inner wall of the receiving groove is provided with a plurality of axially extending ribs and the convex a plurality of grooves between the ribs, in a radial section, each of the ribs has a convex arc connected between the two grooves, and the extension of any adjacent two convex arcs does not intersect the range of the ferrule, The recesses of the receiving slot are for inserting a polygonal ball head of one of the driving heads; the outer sleeve of the one of the driving heads is connected to the outside of the sleeve, and the inner wall is provided with a recess and a relative The recess is a convex portion, and the outer sleeve is slidable relative to the sleeve in a first position and a second position; at least one limiting member is disposed on one of the ribs and disposed on the sleeve and the outer sleeve And optionally protruding from the accommodating groove; wherein, when the outer sleeve is in the first position, the convex portion abuts the limiting member and protrudes into the accommodating groove, and the limiting member is Limiting the polygonal ball head blocking to the receiving groove; wherein, when the outer casing is in the second position, the concave portion is opposite to the concave portion Restricting member restricting member which can retreat into the recess portion and the polygonal spherical head can be withdrawn from the accommodating groove. The tool set of the replaceable drive head according to claim 1, wherein the sleeve is provided with a first annular guide angle along the edge of the notch of the receiving groove. The tool kit of the replaceable drive head according to claim 1, wherein the sleeve has a positioning sleeve radially extending at one end thereof, and in the radial direction, the sleeve defining the sleeve has a size not less than the receiving portion. a slot of the slot, the drive head further includes a radial flange disposed on the opposite side of the polygonal ball head, wherein the outer sleeve is located at the first position and the radial flange is limited by the positioning sleeve When the sleeve is in the mouth, the driving head is not rotatable relative to the sleeve; when the jacket is in the first position and the radial flange is not located in the sleeve, the driving head is pivoted relative to the polygonal head The sleeve is pivoted. The tool set of the replaceable drive head of claim 3, wherein the outer sleeve is provided with a second annular guide angle along the edge of the sleeve of the positioning sleeve. The tool kit of the replaceable drive head of claim 4, wherein the sleeve is provided with a first annular guide angle along the edge of the slot of the receiving slot, and the sleeve is along the sleeve of the positioning sleeve The edge is provided with a second annular guide angle, and the first and second annular guide angles are disposed inside and outside. The tool set of the replaceable drive head of claim 3, wherein the positioning sleeve and the receiving groove form a class. The tool set of the replaceable drive head of claim 3, wherein the locating sleeve edge at least partially overlaps between the radial flange and the ferrule. The tool kit of the replaceable drive head according to claim 7, wherein a top step of the one of the positioning sleeves is recessed with a first step, and the first step is disposed along a rim of the sleeve of the positioning sleeve. The tool kit of the replaceable drive head according to claim 1, wherein an elastic member is further abutted between the sleeve and the outer sleeve. The tool kit of the replaceable drive head according to claim 1, wherein a top surface of the sleeve is recessed with a third step portion, and the third step portion is disposed along an inner edge of the slot of the receiving slot. The driving head further includes a radial flange disposed on the opposite side of the polygonal ball head. When the outer casing is located in the first position and the radial flange is limited to the third step portion, the driving head and the driving head The sleeve is not rotatable relative to each other; when the jacket is in the first position and the radial flange is not located in the third step, the driving head pivots relative to the sleeve by pivoting the polygonal head . A tool for replacing a drive head, comprising the tool set of the replaceable drive head according to any one of claims 1 to 10, further comprising: a drive head having a polygonal head and a The opposite radial flange of the polygonal ball head is removably inserted into the receiving groove of the socket. The tool of the replaceable drive head according to claim 11, wherein a bottom surface of one of the radial flanges is recessed to be axially viewed, and the second step is at least partially overlapped with the positioning sleeve .