AU2014100088A4 - Assembly structure of a drill bit and a sleeve - Google Patents

Abstract

An assembly structure of a drill bit and a sleeve is disclosed. A drill bit body which is used to drill a hole on a wall is provided with a latching unit. A sleeve body is sheathed at a front end of the drill bit and an interior of the 5 sleeve body is a hollow space. An end of the sleeve body is provided with a latched part to be fitted with the latching unit, whereas the other end of the sleeve body is provided with a sheathing part. Two ends of the sleeve body can provide two different functions after engaging the sleeve body with the drill bit body, thereby achieving the purposes of knocking and screwing with 10 rotation. C%4 C%4 C(4 (N Cf(N C%4 (N S)

Description

Our Ref: 64431nno P/00/009 Regulation 3.2 AUSTRALIA Patents Act 1990 INNOVATION SPECIFICATION FOR AN INVENTION ENTITLED Invention title: Assembly structure of a drill bit and a sleeve Name of Applicant: Fu-Hsing Lin Address for Service A.P.T. Patent and Trade Mark Attorneys PO Box 222 Mitcham, S.A. 5062 The invention is described in the following statement: ASSEMBLY STRUCTURE OF A DRILL BIT AND A SLEEVE BACKGROUND OF THE INVENTION (a) Field of the Invention 5 The present invention relates to an assembly structure of a drill bit and a sleeve, which is the improvement of a drilling tool, and more particularly to an assembly structure that a sleeve body is engaged at a front end of a drill bit body to be provided with a different function. (b) Description of the Prior Art 10 Based upon requirements of some installation works, some object or machine needs to be hung up on a wall. For a conventional hanging operation, a hole is always first drilled on a wall using a drill bit, and then an expansion screw set is knocked into the hole. Next, an internal bolt of the expansion screw set is locked into an expansion screw barrel with rotation, thereby 15 achieving the purpose of latching the expansion screw set into the hole. For a conventional process, an electric drill bit, a hammer and a wrench are needed in operation. Therefore, many tools must be carried in construction and the tools need to be replaced frequently while in operation, which is rather troublesome and inconvenient. Furthermore, if the location of construction is 20 too high that a worker needs to stand on a ladder, it can even induce a danger 2 that the worker may fall down and get hurt. SUMMARY OF THE INVENTION Accordingly, the primary object of the present invention is to provide an assembly structure of a drill bit and a sleeve, wherein two ends of the sleeve 5 are provided respectively with a different structure, and when the sleeve is to be installed at a front end of the drill bit, the sleeve can be turned around on demand, such that two different functions can be achieved in a single sleeve structure. To achieve the abovementioned object, the present invention includes 10 primarily an assembly structure of a drill bit and a sleeve, wherein a drill bit body which is used to drill a hole on a wall is provided with a latching unit, the sleeve body is sheathed at a front end of the drill bit, an interior of the sleeve body is formed with a hollow space, an end of the sleeve body is provided with a latched part to be fitted with the latching unit, and the other end of the sleeve 15 body is provided with a sheathing part. Accordingly, two ends of the sleeve body can provide two different functions after engaging the sleeve body with the drill bit body, including specifically knocking and rotation. When the knocking function is needed, the sheathing part of the sleeve body is fitted to the drill bit. At this time, the sleeve body is connected in 20 cascade with the drill bit but will not link with the drill bit to rotate; whereas, the 3 drill bit body can link with the sleeve body to knock on the expansion screw set with vibration. On the other hand, when the rotation function is needed, the latched part of the sleeve body is fitted to the latching unit of the drill bit body, allowing the 5 sleeve body and the drill bit body to be connected and gnawed together using the latched part and the latching unit. When the drill bit body rotates, the sleeve body can be linked at a same time to rotate, and the sheathing part of the sleeve body will rotate as well. Accordingly, when the sheathing part is sheathed at the internal bolt, the rotation process can be performed. 10 By the abovementioned technical means, the specific functions that the present invention achieve are that the number and type of the tools used in the operation can be reduced, and only the drill bit body and the sleeve body are required to accomplish the latching of the expansion screw set without carrying a hammer, a wrench or other tools, which is perfect and very convenient. 15 To enable a further understanding of the said objectives and the technological methods of the invention herein, the brief description of the drawings below is followed by the detailed description of the preferred embodiments. BRIEF DESCRIPTION OF THE DRAWINGS 20 FIG. 1 shows a three-dimensionally exploded view of the present invention. 4 FIG. 2 shows another three-dimensionally exploded view of the present invention. FIG. 3 shows a schematic view of the present invention in performing a knocking operation. 5 FIG. 4 shows a three-dimensionally exploded and schematic view of the present invention in performing a screwing operation with rotation. FIG. 5 shows a schematic view of the present invention in performing the screwing operation with rotation. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 10 Referring to FIG. 1 and FIG. 2, the present invention discloses an assembly structure of a drill bit and a sleeve, comprising a drill bit body 1, an end of the drill bit body 1 is a joining part 11 which is connected with a power tool 4 (as shown in FIG. 3), the other end is a drill bit 12, and a proper location in the middle part of the drill bit body 1 is provided with a latching unit 13 which 15 is not in a circular shape; and a sleeve body 2, the sleeve body 2 is sheathed at a front end of the drill bit body 1, an interior of the sleeve body 2 is formed with a hollow space 21, an end of the sleeve body 2 is provided with a latched part 23 to be fitted with the latching unit 13, an edge of the latched part 23 is provided with a plate unit 22, and the other end of the sleeve body 2 is 20 provided with a sheathing part 24 which is designed as an internal hexagonal 5 socket according to the shape requirement of an existing expansion screw set. However, the sheathing part 24 is not limited to this hexagonal shape and it can be also designed as an internal polygonal structure, a flathead structure, a cruciform structure or a star-shaped structure. 5 Upon implementing the operation, a hole is first drilled on a wall using the drill bit 12 of the drill bit body 1, and then the front end of the drill bit body 1 is sheathed with the sleeve body 2, especially with that the sheathing part 24 is engaged with the drill bit 12, as shown in FIG. 2 and FIG. 3. Next, the sleeve body 2 is sheathed at the tail end of the expansion screw set 3, and the power 10 tool 4 is actuated to operate the drill bit body 1. As idle can be formed between the sleeve body 2 and the drill bit body 1, the drill bit body 1 and the sleeve body 2 will knock with vibration on the expansion screw set 3, forcing the expansion screw set 3 into the hole of the wall 5. On the other hand, when an interior structure of the expansion screw set 3 15 needs to be expanded, the sleeve body 2 is turned around, allowing the latched part 23 to be fitted and gnawed with the latching unit 13 of the drill bit body 1, as shown in FIG. 4. Next, the sleeve body 2 is sheathed at the tail end of the expansion screw set 3, especially with that the sheathing part 24 (as shown in FIG. 1) is sheathed at an internal bolt head 31 of the expansion 20 screw set 3. Then the power tool 4 is actuated to rotate the drill bit body 1. As 6 the sleeve body 2 and the drill bit body 1 are linked and gnawed together, the drill bit body 1 can drive the sleeve body 2 to rotate, such that the internal bolt head 31 can be locked inward with rotation by the sheathing part 24 (as shown in FIG. 1, 4 and 5), which expands the tail end inside the expansion screw set 5 3. It is to be understood that the above description and drawings are only used for illustrating some embodiments of the present invention, not intended to limit the scope thereof. Any variation and deviation from the above description and drawings should be included in the scope of the present 10 invention. 7

Claims (5)

1. An assembly structure of a drill bit and a sleeve, comprising: a drill bit body, an end of the drill bit body is a joining part, the other end is a drill bit, and a proper location in the middle part of the drill bit body is 5 provided with a latching unit; and a sleeve body, the sleeve body is sheathed at a front end of the drill bit body, an interior of the sleeve body is formed with a hollow space, an end of the sleeve body is provided with a latched part to be fitted with the latching unit, and the other end of the sleeve body is provided with a 10 sheathing part.

2. The assembly structure of a drill bit and a sleeve, according to claim 1, wherein the latching unit is not in a circular shape.

3. The assembly structure of a drill bit and a sleeve, according to claim 1, wherein an edge of the latched part is provided with a plate unit. 15

4. The assembly structure of a drill bit and a sleeve, according to claim 1, wherein the sheathing part is in a shape of an internal hexagon.

5. The assembly structure of a drill bit and a sleeve, according to claim 1, wherein the sheathing part is in a flathead shape, a cruciform shape or a star shape. 20 8