An improved electric hammer

Abstract

The present invention relates to an improved electric hammer equipped with a reference datum point, comprising a tool head for drilling, an input module for setting a predetermined depth, a control module connected to the input module to receive the predetermined depth, a distance measuring module that measures the distance between the reference datum point and the surface being drilled and feeds it back to the control module for comparison with the predetermined depth to calculate the current hole depth or the current remaining drilling depth, a display module connected to the control module to display the current hole depth or the current remaining drilling depth, and a motor module connected to the control module and controlled by the control module to control whether the tool head is operated. The control module is connected to the distance measuring module and controls the distance measuring module to continue measuring the distance after the initial drilling to the predetermined depth. When the electric hammer is withdrawn a distance m and continues to operate in the current drilling direction, the distance measuring parameter is provided for comparison with the predetermined depth to ensure that the hole depth remains unchanged, with 0 < m < the predetermined depth. This device effectively improves battery operating efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of electric tools, and in particular to an improved electric hammer. Background Art

[0002] With the development of intelligent society, smart electric hammers have also begun to appear on the market. People can input the desired hole depth through the input module set on the electric hammer, and drill the hole to that depth with the help of the ranging module. The hole depth is displayed in real time. After the hole is drilled to the preset depth, the electric hammer will control the motor to stop automatically, thereby achieving precise drilling.

[0003] This type of electric hammer improves drilling efficiency, but it also presents a problem. Due to varying levels of experience and proficiency, operators often produce less than ideal holes. For example, the hole diameter may be slightly smaller than the ideal diameter, or the inner wall may be less than smooth. This often requires hole modification. This modification involves withdrawing the hammer's drill bit a certain distance and then continuing to drill in the same direction. The drill's cutting and other functions smoothen the hole wall or increase its diameter, while maintaining the same depth.

[0004] However, after the existing intelligent electric hammer completes drilling, the distance measurement function stops working. When the hole is modified, the distance measurement module cannot continue to monitor the distance of the current operation according to the previous preset depth, resulting in the hole depth easily exceeding the preset depth during the modification process, causing drilling failure.

[0005] At the same time, whether it is the existing intelligent electric hammer or the previous non-intelligent electric hammer, before drilling, it is necessary to measure and mark the coordinates of the drilling position on the surface to be drilled by means of a ruler, etc., before subsequent drilling work can be carried out. However, due to reading the ruler with the naked eye, errors are prone to occur, which can easily lead to inaccurate positioning.

[0006] Moreover, existing electric hammers either have only an intelligent mode or only a manual control mode, and the two are not compatible. As a result, once the intelligent mode fails, the motor cannot be automatically controlled to stop, affecting the efficiency of the electric hammer. Or when inexperienced people use the manual control mode to control the electric hammer, it is easy to cause the motor to stop too early or too late, resulting in drilling failure. Summary of the Invention

[0007] In view of the above problems, the object of the present invention is to provide an improved electric hammer in which the distance control function is still maintained after the initial drilling is completed, so that the operator can perform subsequent finishing operations.

[0008] Another object of the present invention is to provide an improved electric hammer which is easy for an operator to accurately locate a punching position and is easy to operate.

[0009] Another object of the present invention is to provide an improved electric hammer that is compatible with both an intelligent mode and a manual control mode, so as to improve the applicability of the electric hammer.

[0010] In order to achieve the above object, the technical solution of the present invention is: an improved electric hammer, the electric hammer is provided with a reference point, the electric hammer comprises:

[0011] a tool head for performing the punching operation;

[0012] An input module for setting a predetermined depth value;

[0013] a control module connected to the input module to receive a predetermined depth value;

[0014] a distance measuring module for measuring the distance between the reference reference point and the surface to be drilled and feeding the distance back to the control module so that the control module compares the distance with the predetermined depth to calculate the current hole depth or the current remaining drilling depth;

[0015] A display module connected to the control module to display the current hole depth or the current remaining drilling depth;

[0016] A motor module connected to the control module and controlled by the control module to control whether the tool head works;

[0017] Its characteristics are:

[0018] The control module is connected to the distance measuring module and controls the distance measuring module to continue to maintain the distance measuring state after the initial drilling reaches the predetermined depth so that when the electric hammer is withdrawn a distance m, the distance measuring module continues to work along the current hole direction, providing distance measurement parameters for comparison with the predetermined depth to ensure that the hole depth remains unchanged, 0<m<predetermined depth.

[0019] Furthermore, the reference datum point is a through hole provided on the electric hammer and cooperated with the distance measuring module for distance measurement and calibration of coordinate position, and the depth direction of the through hole is perpendicular to the direction of the drilling path.

[0020] Furthermore, the through hole is located at the front end of the ranging module, the rear end of the ranging module, or directly above or below the ranging module.

[0021] Furthermore, the electric hammer also includes a selection switch connected to the control module for selecting the working mode of the electric hammer and determining whether the motor stops manually or intelligently when drilling to a predetermined depth.

[0022] Furthermore, the electric hammer also includes a voice module connected to the control module and capable of broadcasting the opening and closing of the electric hammer, the direction of motor rotation, the speed, the drilling position, and the working mode of the electric hammer.

[0023] Furthermore, the motor module includes a brushless motor.

[0024] Furthermore, the control module includes a single chip microcomputer.

[0025] Furthermore, the ranging module is a laser ranging module, an ultrasonic ranging module, an electromagnetic wave ranging module or an infrared sensor ranging module.

[0026] Compared with the prior art, the advantages of the present invention are:

[0027] By controlling the distance measuring module to remain in working state after the drilling is in place, when the motor retreats a certain distance and continues to modify the current hole, it can continue to provide distance measuring parameters to the control module for comparison with the predetermined depth to ensure that the hole depth remains unchanged, thereby improving the drilling accuracy and efficiency; the setting of the reference point and the positional relationship between it and the distance measuring module can give full play to the distance measuring function of the distance measuring module, so that the distance measuring module not only has a simple drilling and distance measuring function, but can also play a role in calibrating position coordinates, so that the electric hammer not only has a drilling function, but also has a calibration and positioning function, which improves the applicability of the electric hammer and allows the operator to abandon the tedious operation of calibration and positioning that usually requires relying on auxiliary tools, simplifying the operation process and improving the calibration position accuracy; and the selection of working mode is convenient for the operator to select the mode according to his own needs, which is more humane and improves the applicability of the electric hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the overall structural block diagram of the electric hammer improved in this application.

[0029] Figure 2 This is a schematic diagram of the structure of the electric hammer improved in this application.

[0030] Figures 3 (a) and 3 (b) are schematic diagrams of the operation of the improved electric hammer of the present application for coordinate position calibration. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] like Figure 1-2And the preferred embodiment of the present invention shown in Figures 3 (a)-3 (b), the electric hammer is provided with a reference reference point, which includes a tool head 1 for drilling, an input module 2 for setting a predetermined depth value, a control module 3 connected to the input module 2 to receive the predetermined depth value, a distance measuring module 4 for measuring the distance between the reference reference point and the drilled surface and feeding the aforementioned distance back to the control module 3 for the control module 3 to compare it with the predetermined depth to calculate the current hole depth or the remaining depth of the current drilling, a display module 5 connected to the control module 3 to display the current hole depth or the remaining depth of the current drilling, and a motor module 6 connected to the control module 3 and controlled by the control module 3 to control whether the tool head 1 works or not. The control module 3 is connected to the distance measuring module 4 and controls the distance measuring module 4 to continue to maintain the distance measuring state after the initial drilling to the predetermined depth so that when the electric hammer is withdrawn a distance m and the distance measuring module 4 continues to work along the current hole direction, the distance measuring parameters are provided for comparison with the predetermined depth to ensure that the hole depth remains unchanged, 0<m<predetermined depth.

[0033] In this way, through the cooperation of the control module and the distance measurement module, it is ensured that the hole depth remains unchanged when the hole is modified, preventing the hole from being punched through and causing drilling failure.

[0034] like Figure 2 As shown, the reference reference point is a through hole 7 provided on the electric hammer and cooperating with the distance measuring module 4 for distance measurement and calibration of coordinate positions. The depth direction of the through hole 7 is perpendicular to the direction of the drilling path. The center of the through hole 7 and the distance measuring direction of the distance measuring module 4 may be on the same straight line or not. In either case, during actual measurement, the distance measured by the distance measuring module is the distance between the center of the through hole 7 and the punched surface. The distance measurement algorithm is mainly implemented by software, and the specific method is easy for those skilled in the art to think of, so it will not be elaborated here.

[0035] At the same time, the through hole 7 is located at the front end or the rear end of the ranging module 4. Of course, the center of the through hole 7 can also be located directly above or directly below the ranging module 4, but in this case the distance between the ranging module 4 and the center of the through hole 7 is 0. In this embodiment, it is preferred that the through hole 7 is located at the rear end of the ranging module.

[0036] When calibrating the positioning coordinates, if you know the longitudinal and transverse distances or the approximate positioning area required for drilling, you can roughly estimate the position of the electric hammer when calibrating the coordinates, and then stick the electric hammer to the surface to be drilled and move it parallel to the X direction (or transverse direction). During the movement, the distance measuring module 4 measures the distance and the display module 5 displays the current distance. When the distance reaches the desired coordinate value or reaches the appropriate positioning area, the marking pen is passed through the through hole 7 to mark and draw a line on the surface to be drilled. The same operation is used to mark and draw a line in the Y direction (or longitudinal direction). Then, the intersection point obtained by extending the marked lines in the X and Y directions is the coordinate of the position to be drilled.

[0037] This type of calibration and positioning operation avoids the error caused by reading the ruler with the naked eye and improves the accuracy of positioning calibration. Obviously, it is also possible to first perform the mobile ranging calibration in the Y direction (or longitudinal direction) and then perform the mobile ranging calibration in the X direction (or transverse direction).

[0038] At the same time, it should be noted that before performing the mobile calibration, a rough estimate will be made, which is only to make it more convenient to make the intersection of the marking lines in the X and Y directions. In other words, even if the estimation pre-sequence is omitted and the movement-calibration-intersection processing in the X and Y directions is directly performed in a similar "blind typing" manner, the positioning calibration of the points to be punched can be completed. However, one possible situation under this method is that the marking lines in the X and Y directions need to be extended before the intersection point can be obtained, but this still does not affect the accuracy of the calibration.

[0039] In order to select the working mode of the electric hammer according to individual needs, the electric hammer also includes a selection switch 8 connected to the control module 3 for selecting the electric hammer working mode and determining whether the motor is stopped manually or by intelligent control when the hole is drilled to a predetermined depth. At the same time, in order to better realize the humanized design of the electric hammer, the electric hammer also includes a voice module 9 connected to the control module 3 and can broadcast the information of the electric hammer on and off, the direction of motor rotation, speed, the drilling position, and the working mode of the electric hammer. Of course, the information that the voice module 9 can broadcast is far more than this, and this is just a simple list.

[0040] Preferably, the motor is a brushless motor, the control module 3 includes a single chip microcomputer, and the distance measurement module 4 is a laser distance measurement module, an ultrasonic distance measurement module, an electromagnetic wave distance measurement module or an infrared sensor distance measurement module.

[0041] The following is a brief description of the drilling operation of the electric hammer:

[0042] After determining the calibration coordinate point, press the power button of the electric hammer, select the working mode of the motor, and input the predetermined depth data L through the input module 2. Then, place the tool head 1 of the electric hammer on the coordinate point, and make the electric hammer as a whole perpendicular to the surface to be punched. Press the corresponding operating part on the ranging module 4 to clear the ranging module 4. At the same time, the display data on the display module 5 is also cleared, and the voice module 9 broadcasts "the current data has been cleared". Then, press the start button to start the electric hammer, and the tool head 1, such as a drill bit, starts drilling. The ranging module 4 measures the distance while transmitting the ranging data to the control module 3. The control module 3 analyzes the received predetermined data depth L and the current depth measured by the ranging module 4, determines the current hole depth or the current remaining depth, and displays it on the display module 9.

[0043] Of course, the clearing operation can also be performed when the electric hammer power key is pressed, and the specific selection can be made according to actual needs.

[0044] After the hole is drilled, the voice module 9 prompts "the hole is drilled". At this time, the operator will pull out the electric hammer and observe the initial hole. If it is found that the inner wall of the hole is not smooth enough or the hole diameter is a little small, the electric hammer will be reinserted into the hole. Of course, the insertion depth at this time is smaller than the predetermined depth, which is equivalent to withdrawing the electric hammer by a depth of m. Press the start button again, and the tool head 1 on the electric hammer continues to start drilling. The hole is modified by the movement of the tool head 1. During this process, the distance measuring module 4 continuously measures the distance between the reference reference point and the drilling surface, and the control module determines the relationship between the distance and L, thereby ensuring that the depth of the initial hole remains unchanged.

[0045] In this application, the value of m is determined according to actual needs. For example, if the predetermined hole depth L is 10 cm, the value of m may be 3 cm, 5 cm, 6 cm, etc.

[0046] The present application ensures that the hole depth remains unchanged during the modification drilling process, ensuring the accuracy and efficiency of drilling; the coordination between the reference reference point and the distance measuring module enables the function of the distance measuring module to be better exerted and extended, so that the distance measuring module is no longer like the previous intelligent electric hammer, which only plays a distance measuring role when drilling, but also plays a role when calibrating the position coordinates, so that the electric hammer not only has a drilling function, but also has a calibration and positioning function, which improves the applicability and function of the electric hammer, and the high measurement accuracy of the distance measuring module avoids the errors caused by reading the ruler with the naked eye, etc., and also enables the operator to abandon the previous operation of relying on auxiliary tools for calibration, and the trouble caused by the need to be equipped with multiple auxiliary tools, thereby improving the accuracy of the calibration position and the ease of operation; the choice of working mode makes it convenient for the operator to select the motor control shutdown mode according to his own needs, which also improves the applicability of the electric hammer.

[0047] Although the 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An improved electric hammer, wherein a reference point is provided on the electric hammer, and the electric hammer comprises: a tool head (1) for punching holes; An input module (2) for setting a predetermined depth value; A control module (3) connected to the input module (2) to receive a predetermined depth value; a distance measuring module (4) for measuring the distance between the reference reference point and the surface to be punched and feeding the distance back to the control module (3) so that the control module (3) can compare the distance with a predetermined depth to calculate the current hole depth or the current remaining punching depth; a display module (5) connected to the control module (3) for displaying the current hole depth or the current remaining drilling depth; a motor module (6) connected to the control module (3) and controlled by the control module (3) to control whether the tool head (1) works; Its characteristics are: The control module (3) is connected to the distance measuring module (4) and controls the distance measuring module (4) to continue to maintain the distance measuring state after the initial drilling to the predetermined depth, so that when the electric hammer is withdrawn a distance m, the distance measuring module (4) continues to work along the current hole direction, providing distance measuring parameters for comparison with the predetermined depth to ensure that the hole depth remains unchanged, 0 < m < predetermined depth; The reference datum point is a through hole (7) provided on the electric hammer and cooperating with the distance measuring module (4) for distance measurement and coordinate calibration, and the depth direction of the through hole (7) is perpendicular to the direction of the drilling path; The electric hammer further includes a selection switch (8) connected to the control module (3) for selecting the working mode of the electric hammer and determining whether the motor stops by manual control or by intelligent control when drilling to a predetermined depth. The electric hammer further comprises a voice module (9) connected to the control module (3) and capable of broadcasting the opening and closing of the electric hammer, the direction of motor rotation, the speed, the punching position, and the working mode of the electric hammer.

2. The improved electric hammer according to claim 1, characterized in that: The through hole (7) is located at the front end of the distance measuring module (4), the rear end of the distance measuring module (4), or directly above or below the distance measuring module (4).

3. The improved electric hammer according to claim 1, characterized in that: The motor module (6) includes a brushless motor.

4. The improved electric hammer according to claim 1, characterized in that: The control module (3) includes a single chip microcomputer.

5. The improved electric hammer according to claim 1, characterized in that: The distance measuring module (4) is a laser distance measuring module, an ultrasonic distance measuring module, an electromagnetic wave distance measuring module or an infrared sensor distance measuring module.

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