Electric hammer drill capable of pre-determining drilling point position
By designing a structure in the electric hammer drill including rotating sleeve, connecting piece, limiting through holes, positioning through holes and other components, the drilling bias problem caused by mark loss in the electric hammer drill is solved, and the accuracy and reliability of the drilling are achieved.
Patent Information
- Application Number
- CN202420497689.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-14
AI Technical Summary
During the drilling process of electric hammer drilling, the marks are easily lost, resulting in no guidance in the subsequent drilling process, which is prone to drilling bias.
An electric hammer drill including a main body of the electric hammer drill, a rotating sleeve, a fixed screw hole position, a connecting piece, a limit through hole, a positioning through hole, a guide column, a positioning block, a connecting end block, a movable piece and a positioning ring are designed. Through the fit of these components, the positioning ring adjusts its position relative to the clamping head of the electric hammer drill body with the cooperation of the guide column and the movable piece, and maintains it on the same axis as the clamping head of the electric hammer drill body, providing a continuous drilling reference.
This design provides a continuous drilling reference, avoiding drill bias problems caused by mark loss and ensuring drilling accuracy and reliability.
Smart Images
Figure CN222553464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric hammer drills, in particular to an electric hammer drill capable of predetermining drilling points. Background Art
[0002] The electric hammer drill is a handheld power tool that combines the functions of an impact drill and an electric hammer. It can be used to drill holes in materials such as concrete and bricks. It can also be used to make grooves and large holes in materials such as concrete and bricks.
[0003] When drilling at precise points, you need to first use tools to determine the drilling position, then mark the drilling position, and finally operate the electric hammer drill to drill the marked point. During this process, the mark will be lost in the drill hole, resulting in a lack of guidance for the subsequent drilling process, which is prone to drilling offset problems. Utility Model Content
[0004] In order to overcome the deficiencies of the prior art, the utility model provides an electric hammer drill that can predetermine drilling points, thereby solving the problem that during the construction of marked points by the electric hammer drill, the marks will be lost in the drill hole, resulting in a lack of guidance for the subsequent drilling process and prone to drilling offset.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an electric hammer drill capable of predetermining a drilling point, comprising an electric hammer drill body, an electric hammer drill side connection point formed at the edge of the electric hammer drill body, a rotating sleeve arranged at the electric hammer drill side connection point, a fixed screw hole arranged in the rotating sleeve, a connecting piece formed by a lateral extension of the fixed screw hole, a limiting through hole and a positioning through hole arranged inside the connecting piece, a guide column and a positioning block limiting the movement of the guide column arranged inside the limiting through hole and the positioning through hole, respectively, a connecting end block arranged at the end of the guide column, a slidable movable sheet sleeved inside the connecting end block, and a positioning ring arranged at the end of the movable sheet;
[0006] The positioning ring adjusts its own setting position relative to the electric hammer drill main body clamping head under the cooperation of the guide column and the movable sheet, and keeps it on the same axis with the electric hammer drill main body clamping head.
[0007] Preferably, the rotating sleeve is fixed at the connection point on the side of the electric hammer drill by the cooperation between the fixing screw hole and the external screw, and the degree of fastening is adjustable.
[0008] Preferably, the side of the limiting through hole is communicated with the positioning through hole, and the inner wall of the guide column is completely fitted with the inner wall of the limiting through hole.
[0009] Preferably, the positioning through holes are composed of two groups of overlapping circular through holes, and the overlapping parts are rounded to form a smooth arc-shaped transition section.
[0010] Preferably, the middle portion of the positioning block is nested in the positioning through hole and is nested and connected with the positioning through hole, the two ends of the positioning block are respectively located on both sides of the connecting piece, and the inner wall surface of the positioning block is in conflict with the outer wall surface of the connecting piece.
[0011] Preferably, the inner wall surface of the connecting end block and the outer wall surface of the movable sheet are both ground, and the relative position between the connecting end block and the movable sheet is fixed by friction.
[0012] Preferably, a transverse protrusion is formed at the end of the movable sheet, and the end of the movable sheet is ground.
[0013] Preferably, the positioning ring is annular in design, and the inner diameter of the positioning ring is larger than the maximum adaptable drill bit diameter of the electric hammer drill body.
[0014] Compared with the prior art, the utility model can achieve the following beneficial effects:
[0015] 1. In the utility model, a limiting through hole and a positioning through hole are provided inside the connecting piece, and a guide column and a positioning block for limiting the movement of the guide column are respectively arranged inside the limiting through hole and the positioning through hole. A connecting end block is arranged at the end of the guide column, a slidable movable sheet is sleeved in the connecting end block, and a positioning ring is arranged at the end of the movable sheet. The positioning ring adjusts its setting position relative to the clamping head of the electric hammer drill body with the cooperation of the guide column and the movable sheet, keeps it on the same axis as the clamping head of the electric hammer drill body, and provides a continuous drilling reference.
[0016] 2. In the utility model, the middle part of the positioning block contacts the guide column in the limiting through hole, limiting the natural sliding of the guide column and maintaining the relative position of the guide column and the limiting through hole, and will not be affected by gravity under working conditions with an inclined angle. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0018] Figure 2 For the utility model Figure 1 The enlarged structural diagram at A in the middle;
[0019] Figure 3 This is a schematic diagram of the structure of the rotating sleeve of the utility model
[0020] Figure 4 For the utility model Figure 1 Enlarged structural diagram at B in the middle.
[0021] Among them: 1. Electric hammer drill body; 2. Electric hammer drill side connection point; 3. Rotating sleeve; 4. Fixed screw hole; 5. Connecting piece; 6. Limiting through hole; 7. Positioning through hole; 8. Guide column; 9. Positioning block; 10. Connecting end block; 11. Movable piece; 12. Positioning ring. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the utility model is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the utility model. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments are all commercially available unless otherwise specified.
[0023] Embodiment:
[0024] like Figure 1-4 As shown, the utility model provides an electric hammer drill capable of predetermining a drilling point, comprising an electric hammer drill body 1, an electric hammer drill side connection point 2 formed at the edge of the electric hammer drill body 1, a rotating sleeve 3 is arranged at the electric hammer drill side connection point 2, a fixed screw hole 4 is arranged in the rotating sleeve 3, a connecting piece 5 is formed by the lateral extension of the fixed screw hole 4, a limiting through hole 6 and a positioning through hole 7 are arranged inside the connecting piece 5, a guide column 8 and a positioning block 9 limiting the movement of the guide column 8 are arranged inside the limiting through hole 6 and the positioning through hole 7, a connecting end block 10 is arranged at the end of the guide column 8, a slidable movable sheet 11 is sleeved in the connecting end block 10, and a positioning ring 12 is arranged at the end of the movable sheet 11;
[0025] The positioning ring 12 adjusts its own setting position relative to the clamping head of the electric hammer drill body 1 under the cooperation of the guide column 8 and the movable sheet 11, and keeps it on the same axis as the clamping head of the electric hammer drill body 1.
[0026] The rotating sleeve 3 is fixed at the connection point 2 on the side of the electric hammer drill by the cooperation of the fixing screw hole 4 and the external screw, and the degree of fastening is adjustable to facilitate the adjustment of the setting angle of the rotating sleeve 3.
[0027] The side of the limiting through hole 6 is connected to the positioning through hole 7, and the inner wall of the guide column 8 is completely in contact with the inner wall of the limiting through hole 6. The limiting through hole 6 limits the guide column 8 so that the guide column 8 can only move laterally in the direction limited by the limiting through hole 6.
[0028] The positioning through hole 7 is composed of two groups of overlapping circular through holes, and the overlapping part is rounded to form a smooth arc transition section. The middle part of the positioning block 9 is nested in the positioning through hole 7 and is nested and connected with the positioning through hole 7. The two ends of the positioning block 9 are respectively located on both sides of the connecting piece 5, which are used to push the positioning block 9. The inner wall surface of the positioning block 9 conflicts with the outer wall surface of the connecting piece 5. When the positioning block 9 is arranged inside the positioning through hole 7, the positioning through hole 7 can limit the positioning block 9 so that the positioning block 9 remains inside the positioning through hole 7 without sliding. When in use, the positioning block 9 slides from one end of the positioning through hole 7 to the end close to the limiting through hole 6. The middle part of the positioning block 9 contacts the guide column 8 in the limiting through hole 6, which limits the natural slippage of the guide column 8, maintains the relative position of the guide column 8 and the limiting through hole 6, and limits the positioning block 9 through friction.
[0029] The inner wall surface of the connecting end block 10 and the outer wall surface of the movable piece 11 are both ground, and the relative position between the connecting end block 10 and the movable piece 11 is fixed by friction. After the electric hammer drill body 1 is installed or the drill bit is replaced, the rotation angle of the guide column 8 and the setting position of the movable piece 11 relative to the connecting end block 10 are adjusted at the same time, so that the positioning ring 12 is sleeved on the outside of the drill bit, so that the positioning ring 12 can be concentric with the operating direction of the drill bit, and the electric hammer drill body 1 is pushed to drive the drill bit to work, and the positioning ring 12 is resisted and maintained in the original position.
[0030] The end of the movable piece 11 is formed with a transverse protrusion, and the end of the movable piece 11 is ground. The grinding treatment of the end of the movable piece 11 allows the operator to obtain sufficient friction when pulling the movable piece 11 to adjust the relative position of the movable piece 11 and the connecting end block 10, thereby ensuring the normal pulling of the movable piece 11.
[0031] The positioning ring 12 is designed in an annular shape, and the drill bit can pass through the annular positioning ring 12, so that the positioning ring 12 will not hinder the normal operation of the device. At the same time, the positioning ring 12 can be used as a reference during work to help the operator determine the working status of the device. The inner diameter of the positioning ring 12 is larger than the maximum adaptable drill bit diameter of the electric hammer drill body 1, thereby ensuring that drill bits of different specifications can pass through the positioning ring 12.
[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. An electric hammer drill capable of predetermining drilling points, characterized in that: The invention comprises an electric hammer drill body (1), wherein an electric hammer drill side connection point (2) is formed at the edge of the electric hammer drill body (1), a rotating sleeve (3) is arranged at the electric hammer drill side connection point (2), a fixing screw hole (4) is arranged in the rotating sleeve (3), a connecting piece (5) is formed by the lateral extension of the fixing screw hole (4), a limiting through hole (6) and a positioning through hole (7) are arranged inside the connecting piece (5), a guide column (8) and a positioning block (9) for limiting the movement of the guide column (8) are arranged inside the limiting through hole (6) and the positioning through hole (7), respectively, a connecting end block (10) is arranged at the end of the guide column (8), a slidable movable sheet (11) is sleeved inside the connecting end block (10), and a positioning ring (12) is arranged at the end of the movable sheet (11); The positioning ring (12) adjusts its own setting position relative to the clamping head of the electric hammer drill body (1) in cooperation with the guide column (8) and the movable sheet (11), and keeps it on the same axis as the clamping head of the electric hammer drill body (1).
2. The electric hammer drill capable of predetermining drilling points according to claim 1, characterized in that: The rotating sleeve (3) is fixed at the connection point (2) on the side of the electric hammer drill by the cooperation between the fixing screw hole (4) and the external screw, and the degree of tightening of the fixation is adjustable.
3. The electric hammer drill capable of predetermining drilling points according to claim 1, characterized in that: The side edge of the limiting through hole (6) is connected to the positioning through hole (7), and the inner wall of the guide column (8) is completely in contact with the inner wall of the limiting through hole (6).
4. The electric hammer drill capable of predetermining drilling points according to claim 1, characterized in that: The positioning through hole (7) is composed of two groups of overlapping circular through holes, and the overlapping part is rounded to form a smooth arc transition section.
5. The electric hammer drill capable of predetermining drilling points according to claim 1, characterized in that: The middle portion of the positioning block (9) is nested in the positioning through hole (7) and is nested and connected to the positioning through hole (7), the two ends of the positioning block (9) are respectively located on both sides of the connecting piece (5), and the inner wall surface of the positioning block (9) is in contact with the outer wall surface of the connecting piece (5).
6. The electric hammer drill capable of predetermining drilling points according to claim 1, characterized in that: The inner wall surface of the connecting end block (10) and the outer wall surface of the movable sheet (11) are both ground, and the relative position between the connecting end block (10) and the movable sheet (11) is fixed by friction.
7. The electric hammer drill capable of predetermining drilling points according to claim 5, characterized in that: The end of the movable piece (11) is formed with a transverse protrusion, and the end of the movable piece (11) is ground.
8. The electric hammer drill capable of predetermining drilling points according to claim 5, characterized in that: The positioning ring (12) is designed to be annular, and the inner diameter of the positioning ring (12) is larger than the maximum diameter of a drill bit that can be adapted by the electric hammer drill body (1).