Electric drill bit structure with positioning and locking functions

Abstract

The utility model discloses an electric drill bit structure with a positioning and locking function, which relates to the technical field of electric drill bits and particularly comprises a drill bit body, one end of the drill bit body is connected with an extension rod through a locking mechanism, the locking mechanism comprises a sleeve coaxially connected with the extension rod, one end of the drill bit body is connected with a prismatic column, and the prismatic column is connected with the drill bit body. A prismatic hole is formed in the sleeve, a prismatic column is correspondingly connected into the prismatic hole, and an annular groove is formed in the outer wall of one end of the prismatic column; placing grooves are symmetrically formed outside the sleeve, a through groove is formed in one side of the bottom surface of each placing groove, a rotating block is rotationally connected to the other side of the bottom surface of each placing groove, a clamping block is fixedly connected to the bottom of one end of each rotating block, and each clamping block penetrates through the corresponding through groove and is clamped in the corresponding annular groove. According to the drill bit, the drill bit body can be lengthened, meanwhile, stable positioning and locking can be achieved, operation is easy, and the practicability of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric drill bits, in particular to an electric drill bit structure with a positioning and locking function. Background Art

[0002] An electric drill is a drilling machine that uses electricity as power. It is a conventional product among power tools and also the most in-demand power tool product. It is widely used in the reinforcement of building beams, slabs, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, etc. When in use, the drill bit needs to be fixed and clamped using a chuck.

[0003] The drill bit length in the prior art is fixed and regular, which is inconvenient for deep hole operation and reduces the practicality of the electric drill. Therefore, we propose an electric drill bit structure with a positioning and locking function. Utility Model Content

[0004] In view of the inconvenience of existing deep hole operations and the lack of practicality of electric drills, the utility model provides an electric drill bit structure with a positioning and locking function, which has the advantage of being able to extend the drill bit to meet different drilling needs, and solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An electric drill structure with a positioning and locking function comprises a drill body, one end of the drill body is connected to an extension rod through a locking mechanism, the locking mechanism comprises a sleeve coaxially connected to the extension rod, one end of the drill body is connected to a prismatic column, the interior of the sleeve is a prismatic hole, the prismatic column is correspondingly connected to the prismatic hole, and an annular groove is provided on the outer wall of one end of the prismatic column;

[0007] A placement groove is symmetrically arranged outside the sleeve, a through groove is opened on one side of the bottom surface of the placement groove, and a rotating block is rotatably connected to the other side of the bottom surface of the placement groove. A clamping block is fixedly connected to the bottom of one end of the rotating block, and the clamping block passes through the through groove and is clamped in the annular groove.

[0008] Optionally, the bottom of one end of the rotating block away from the clamping block and the bottom of the placement slot are fixedly connected to two symmetrically arranged supports, and the supports are connected by a rotating shaft, and a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fastened to the placement slot, and the other end of the torsion spring is fastened to the bottom of the rotating block.

[0009] Optionally, the top of the rotating block is located in the placement groove, and anti-slip grooves are provided on the top surface of the rotating block.

[0010] Optionally, the end of the extension rod away from the sleeve is a smooth rod or a polygonal column structure.

[0011] Optionally, the sleeve and the extension rod are an integrated structure.

[0012] Optionally, the drill body and the prismatic column are an integrated structure.

[0013] Compared with the prior art, the utility model can realize the positioning and locking of the drill body and the extension rod through the clamping connection between the clamping block and the annular groove. It is not only simple to operate, but also can effectively extend the length of the drill bit, meet the processing and use in different environments, and effectively improve the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the casing of the utility model.

[0016] Figure 3 This is a cross-sectional view of the connection between the sleeve and the prismatic column of the utility model.

[0017] Figure 4 The utility model is an installation diagram of an electric drill.

[0018] In the figure: 1, drill body; 2, casing; 3, extension rod; 4, annular groove; 5, prismatic column; 6, rotating block; 7, placement groove; 8, through groove; 9, clamping block; 10, support; 11, torsion spring; 12, prismatic hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 4 The utility model provides a technical solution: an electric drill bit structure with a positioning and locking function, comprising a drill bit body 1, one end of the drill bit body 1 is connected to an extension rod 3 through a locking mechanism, the locking mechanism comprises a sleeve 2 coaxially connected to the extension rod 3, one end of the drill bit body 1 is connected to a prismatic column 5, the interior of the sleeve 2 is a prismatic hole 12, the prismatic column 5 is correspondingly connected to the prismatic hole 12, and an annular groove 4 is provided on the outer wall of one end of the prismatic column 5.

[0021] like Figure 1As described above, when the device is in use, the prismatic column 5 at one end of the drill body 1 is placed in the casing 2 accordingly. The prismatic column 5 is a quadrangular prism or a hexagonal prism, and the prismatic hole 12 corresponds to the shape of the prismatic column 5. The limiting position between the prism and the prismatic hole can ensure the synchronous rotation between the drill body 1 and the extension rod 3.

[0022] A placement groove 7 is symmetrically arranged on the outside of the sleeve 2, a through groove 8 is opened on one side of the bottom surface of the placement groove 7, and a rotating block 6 is rotatably connected to the other side of the bottom surface of the placement groove 7. A clamping block 9 is fixedly connected to the bottom of one end of the rotating block 6, and the clamping block 9 passes through the through groove 8 and is clamped in the annular groove 4.

[0023] The utility model further comprises an elastic component disposed at the bottom of the rotating block 6 away from the end of the clamping block 9. Under the push of the elastic component, the clamping block 9 is finally placed in the through groove 8; Figure 2 , 3 As shown, the rotating block 6 in the placement groove 7 is pressed, and the rotating block 6 drives the clamping block 9 to move out of the through groove 8, pushing the prismatic column 5 into the sleeve 2, so that the annular groove 4 is located directly below the through groove 8, and the rotating block 6 is rotated again to drive the clamping block 9 to pass through the through groove 8 and move into the annular groove 4, so that the drill body 1 and the prismatic column 5 can be positioned and locked.

[0024] It should be noted that if Figure 2 As shown, the rotating block 6 is always located in the placement groove 7 and is not exposed, and the sleeve 2 and the extension rod 3 are arranged in steps, so that the connection between the extension rod 3 and the sleeve 2 forms a step, but the step is connected by an arc transition to prevent stress concentration, and the rotating block 6 should extend slightly to the surface of the extension rod 3, so that it is convenient to press with the thumb and index finger, that is, press on the end of the rotating block 6 away from the through groove 8 to lift the other end of the rotating block 6, causing the clamping block 9 to fall out of the annular groove 4.

[0025] Furthermore, two symmetrically arranged supports 10 are fixedly connected to the bottom of one end of the rotating block 6 away from the clamping block 9 and the bottom of the placement groove 7. The two upper supports 10 are placed in the two lower supports 10, and the supports 10 are connected by a rotating shaft. A torsion spring 11 is sleeved on the rotating shaft. One end of the torsion spring 11 is fastened to the placement groove 7, and the other end of the torsion spring 11 is fastened to the bottom of the rotating block 6.

[0026] like Figure 2 , 3 As described above, the torsion spring 11 can drive the rotating block 6 to automatically return to the initial position, and stably clamp the clamping block 9 in the annular groove 4, further improving the stability of the connection between the drill body 1 and the extension rod 3.

[0027] Furthermore, the top of the rotating block 6 is located in the placement groove 7, and the top surface of the rotating block 6 is provided with anti-slip grooves, which increases the friction between the user's fingers and the top of the rotating block 6, further facilitating adjustment.

[0028] Furthermore, one end of the extension rod 3 away from the sleeve 2 is a smooth rod or a polygonal column structure, and the polygonal column structure is preferably a quadrangular column or a hexagonal column.

[0029] Furthermore, the sleeve 2 and the extension rod 3 are an integrated structure, which improves the overall strength of the sleeve 2 and the extension rod 3.

[0030] Furthermore, the drill body 1 and the prismatic column 5 are an integrated structure, which improves the strength of the drill body 1 and prolongs its service life.

[0031] In summary, the electric drill bit structure with positioning and locking function, when used, Figure 4 As shown, the prismatic column 5 at one end of the drill body 1 is correspondingly clamped in the sleeve 2, and the rotating block 6 is pressed. Under the action of the torsion spring 11, the clamping block 9 can be driven to move into the annular groove 4 for clamping, so that the positioning and locking between the drill body 1 and the extension rod 3 can be achieved, and the other end of the extension rod 3 is clamped with the electric drill ( Figure 1 By connecting with the chuck (indicated by A in the figure), the user can conveniently perform deep hole operation, thereby improving the practicality of the device.

[0032] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric drill bit structure with a positioning and locking function, comprising a drill bit body, characterized in that: One end of the drill body is connected to the extension rod through a locking mechanism, the locking mechanism includes a sleeve coaxially connected to the extension rod, one end of the drill body is connected to a prismatic column, the interior of the sleeve is a prismatic hole, the prismatic column is correspondingly connected to the prismatic hole, and an annular groove is opened on the outer wall of one end of the prismatic column; The sleeve is symmetrically provided with a placement groove on the outside, a through groove is opened on one side of the bottom surface of the placement groove, a rotating block is rotatably connected to the other side of the bottom surface of the placement groove, a clamping block is fixedly connected to the bottom of one end of the rotating block, and the clamping block passes through the through groove and is clamped in the annular groove; It also includes an elastic component arranged at one end of the bottom of the rotating block away from the clamping block. Under the push of the elastic component, the clamping block is placed in the through groove.

2. The electric drill bit structure with positioning and locking function according to claim 1, characterized in that: The elastic component includes two symmetrically arranged supports which are fixedly connected to the bottom of one end of the rotating block away from the clamping block and the bottom of the placement groove; The two upper supports are placed inside the two lower supports, and the supports are connected by a rotating shaft, a torsion spring is sleeved on the rotating shaft, one end of the torsion spring is fastened to the placement groove, and the other end of the torsion spring is fastened to the bottom of the rotating block.

3. The electric drill bit structure with positioning and locking function according to claim 1, characterized in that: The top of the rotating block is located in the placement groove, and anti-slip grooves are arranged on the top surface of the rotating block.

4. The electric drill bit structure with positioning and locking function according to claim 1, characterized in that: One end of the extension rod away from the sleeve is a smooth rod or a multi-prism structure.

5. The electric drill bit structure with positioning and locking function according to claim 1, characterized in that: The sleeve and the extension rod are an integrated structure.

6. The electric drill bit structure with positioning and locking function according to claim 1, characterized in that: The drill body and the prismatic column are an integrated structure.

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