Punching limiter of electric impact drill for building

Abstract

The utility model discloses a punching limiting stopper of an electric impact drill for construction. The punching limiting stopper comprises a sleeve, a limiting plate and a reducing sleeve, a limiting plate is arranged at the bottom of the sleeve, the limiting plate is circular, and the sleeve and the limiting plate are combined to form a boss shape; a positioning screw hole is formed in the sleeve wall of the sleeve, and a butterfly screw is screwed in the positioning screw hole. The drilling depth is estimated directly according to the distance between the position, fixed to the drill bit rod body, of the limiter and the front end of the drill bit, the drilling depth is easy and clear to judge, the structure is simple, and use is convenient; when drilling is conducted, the contact face of the circular limiting plate on the limiting device and the wall face of the wall is large, resistance is generated for the electric impact drill, a drill bit cannot continue to drill into the wall in a drilled hole, the electric impact drill is limited to continue drilling, the estimated drilling depth is completed, operation is easy and convenient, and the drilling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a punching limiter for a building impact drill. Background Art

[0002] During the building construction process, it is necessary to drill holes in the building wall to insert fixing bolts. However, when the construction worker holds the impact drill to drill holes, due to excessive force, the holes drilled by the impact drill bit are deeper, exceeding the expected hole depth to be drilled, and the expected drilling depth cannot be achieved. In particular, in the case of a single-layer thin aerated brick wall, the situation where the drill bit drills through the wall sometimes occurs, and sometimes it is even necessary to re-drill holes, which affects the further operation of the construction and reduces the work efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a punching limiter for a building impact drill aiming at the defects and deficiencies of the prior art, with a simple, practical and convenient structure, which can effectively realize the function of limiting punching.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] The punching limiter for a building impact drill includes a sleeve, a limiting plate and a reducing sleeve; a limiting plate is arranged at the bottom of the sleeve, the limiting plate is circular, and the sleeve and the limiting plate are combined into a boss shape;

[0006] A through hole is arranged along the central axis of the sleeve in the sleeve for inserting the impact drill bit;

[0007] A positioning screw hole is opened on the barrel wall of the sleeve, and a wing screw is screwed on the positioning screw hole.

[0008] A limiting ring block is arranged at the top of the reducing sleeve, and the reducing sleeve and the limiting ring block at the top are in a boss shape.

[0009] An adapting screw hole is opened on the barrel wall of the reducing sleeve; the position of the adapting screw hole corresponds to the positions of a plurality of positioning screw holes opened on the barrel wall of the sleeve.

[0010] A through hole is arranged along the central axis of the sleeve in the reducing sleeve for inserting the impact drill bit;

[0011] The reducing sleeve is embedded in the sleeve, and the limiting ring block at the top of the reducing sleeve is attached to the top end of the sleeve.

[0012] The reducing sleeve is embedded in the sleeve, and the wing screw is screwed into the adapting screw hole on the barrel wall of the reducing sleeve from the positioning screw hole of the sleeve.

[0013] Advantages of the utility model:

[0014] 1. The drilling depth can be estimated directly according to the distance between the position where the stopper is fixed on the drill rod and the front end of the drill bit. The judgment of the drilling depth is simple and clear, the structure is simple, and it is convenient to use;

[0015] 2. During drilling, the contact surface between the circular limiting plate on the stopper and the wall surface of the wall is relatively large, which generates resistance to the impact electric drill, preventing the drill bit from continuing to drill into the wall in the drill hole, restricting the impact electric drill from continuing to drill, and completing the estimated drilling depth. The operation is simple and the drilling efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the present utility model with a variable diameter sleeve embedded;

[0018] Figure 3 It is a schematic structural diagram of the variable diameter sleeve of the present utility model;

[0019] Figure 4 It is a schematic diagram of the implementation of the stopper of the present utility model passing through the drill bit;

[0020] Figure 5 It is a schematic diagram of the implementation of the stopper of the present utility model with a variable diameter sleeve embedded passing through the drill bit;

[0021] Figure 6 It is a schematic diagram of the implementation of wall drilling of the present utility model.

[0022] Reference numerals: sleeve 1, limiting plate 2, through hole 3, positioning screw hole 4, butterfly screw 5, variable diameter sleeve 6, limiting ring block 7, through hole 8, connecting screw hole 9, drill bit 10, small diameter drill bit 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] Referring to Figure 1-6 as shown, the stopper for an impact electric drill used in construction includes a sleeve 1, a limiting plate 2 and a variable diameter sleeve 6. A limiting plate 2 is arranged at the bottom of the sleeve 1. The limiting plate 2 is circular, and the sleeve 1 and the limiting plate 2 are combined into a boss shape;

[0025] A positioning screw hole 4 is opened on the barrel wall of the sleeve 1, and a butterfly screw 5 is screwed on the positioning screw hole 4.

[0026] During use, first place the impact drill bit 10 through the through-hole 3 into the sleeve 1 of the limiter. The position of the sleeve 1 on the impact drill bit is the position where the construction worker estimates the drilling depth. Then tighten the butterfly screw 5 on the sleeve 1. Screw one end of the butterfly screw 5 into the sleeve 1 through the positioning screw hole 4 of the sleeve 1 until one end of the butterfly screw 5 abuts against the drill rod body sleeved inside the limiter, thus fixing the limiter on the drill rod body.

[0027] During drilling, the impact drill bit impacts the building wall to drill a hole. When the circular limiting plate 2 at one end of the sleeve 1 of the limiter contacts the wall surface, the limiting plate 2 adheres to the wall surface. The contact surface between the circular limiting plate 2 and the wall surface of the wall is relatively large, generating resistance to the impact drill, preventing the drill bit from continuing to drill into the wall inside the hole, and restricting the impact drill from continuing to drill, thus completing the preset drilling depth.

[0028] A limiting ring block 7 is provided at the top of the reducing sleeve 6, and the reducing sleeve 6 and the limiting ring block 7 at the top are in a boss shape. The reducing sleeve 6 is embedded in the sleeve 1, and the limiting ring block 7 at the top of the reducing sleeve 6 fits with the top end of the sleeve 1, so that the reducing sleeve 6 is fixed and limited in the sleeve 1, with a stable fit.

[0029] When replacing the drill bit 11 with a small diameter to drill a hole, embed the reducing sleeve 6 in the sleeve 1. The small diameter drill bit penetrates into the reducing sleeve 6 along the through-hole 8 of the reducing sleeve 6. The connecting screw hole 9 corresponds to the position of the positioning screw hole 4 opened on the wall of the sleeve 1. Screw the butterfly screw 5 from the positioning screw hole 4 of the sleeve 1 into the connecting screw hole 9 on the wall of the reducing sleeve 6. One end of the butterfly screw 5 screwed into the reducing sleeve 6 abuts against the rod body of the small diameter drill bit 11, so that the whole limiter is fixed on a certain section of the rod body of the small diameter drill bit 11, and the distance between the front end of the drill bit and the limiter is the distance of the pre-drilled depth.

[0030] Embedding the reducing sleeve 6 in the sleeve 1 of the limiter serves the function of changing the use of drill bits with different diameters.

[0031] When disassembling, reverse the loosening of the butterfly screw 5 to remove the limiter from the drill head. The structure is simple and easy to use.

[0032] The description and application of the present utility model are only illustrative and schematic, and do not intend to limit the scope of the present utility model to the above embodiments; it is completely possible to deform and change the disclosed embodiments. For those ordinary technicians in the art, the replacement and equivalent components of the embodiments are well-known. Those skilled in the art should also be clear that without departing from the spirit or essential characteristics of the present utility model, the present utility model can be implemented in other forms, structures, arrangements, proportions, and with other components, materials, and parts, and other deformations and changes can be made to the disclosed embodiments without departing from the scope and spirit of the present utility model.

Claims

1. A stopper for drilling holes with an impact drill for construction, comprising a sleeve (1), a stopper plate (2) and a reducing sleeve (6), characterized in that: A limiting plate (2) is arranged at the bottom of the sleeve (1); the limiting plate (2) is circular, and the sleeve (1) and the limiting plate (2) are combined to form a boss shape; A plurality of positioning screw holes (4) are provided on the wall of the sleeve (1), and butterfly screws (5) are screwed into the positioning screw holes (4).

2. The construction impact drill hole stopper according to claim 1, characterized in that: A limiting ring block (7) is provided on the top of the reducing sleeve (6), and the reducing sleeve (6) and the limiting ring block (7) on the top are in a boss shape.

3. The construction impact drill hole stopper according to claim 1, characterized in that: A plurality of connecting screw holes (9) are provided on the wall of the reducing sleeve (6), and the positions of the plurality of connecting screw holes (9) correspond to the positions of the plurality of positioning screw holes (4) provided on the wall of the sleeve (1).

4. The construction impact drill hole stopper according to claim 1, characterized in that: The reducing sleeve (6) is embedded in the sleeve (1), and the limiting ring block (7) at the top of the reducing sleeve (6) fits with the top of the sleeve (1).

5. The construction impact drill hole stopper according to claim 1, characterized in that: The reducing sleeve (6) is embedded in the sleeve (1), and the butterfly screw (5) is screwed into the connecting screw hole (9) on the wall of the reducing sleeve (6) through the positioning screw hole (4) of the sleeve (1).

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