A building construction wall body punching device

Abstract

The utility model discloses a building construction wall body punching device, including drilling machine, be provided with the drill ring on the drilling machine still include: ring cover, ring cover connects the outside of drill ring, handle, handle detachable mounting is in the lower part of ring cover, and handle outside upper portion is provided with the water outlet, spray subassembly, spray subassembly swing joint is in handle outside, and its one end is connected with water outlet connection, is used for carrying out dust fall to the dust near the drill bit, pump water subassembly, pump water subassembly sets up in handle inside, is used for the washing water in handle inside to spray subassembly output, the utility model discloses simple operation, safe and reliable, can realize the multiple functions of handle, make handle guarantee can hold, improve the stability of punching, can through the internal storage water source to spray the water mist in the process of punching and carry out dust fall to the punching position, guarantee the working environment when the staff punch, improve the visual acuity, also protected the health of staff, use more convenient.

Description

Technical Field

[0001] This utility model relates to a drilling device, specifically a wall drilling device for building construction, and belongs to the field of wall drilling technology. Background Technology

[0002] Drilling is a common and necessary operation during construction, especially when decorating walls or installing equipment. To ensure a smooth and precise construction process, holes must be precisely drilled at different locations in the wall according to the actual decoration requirements. In this process, wall drilling equipment plays a crucial role.

[0003] Currently, the most common wall drilling device on the market is the electric drill. Electric drills are widely used in construction, especially in drilling and grooving. Most electric drills are designed with a special grip to allow workers to control the tool more stably while drilling, reducing the impact of vibration and improving drilling accuracy and efficiency. However, while this grip effectively provides a holding function, its design is relatively simple and its functionality is relatively limited. Its main purpose is to help the operator hold the tool steadily and reduce hand fatigue during operation, but it cannot provide many other auxiliary functions.

[0004] Besides the limitations imposed by the handle, another common problem is the dust generated during drilling. Electric drills often produce large amounts of dust from stone, concrete, or other materials when drilling. This dust not only obstructs the worker's vision and affects operational precision but can also harm their health. Long-term inhalation of this fine dust can lead to respiratory problems and even occupational diseases such as pneumoconiosis.

[0005] Although existing technologies have incorporated dust-reducing structures on electric drills during drilling, these structures are complex and inconvenient to operate, making them generally quite cumbersome.

[0006] Therefore, the key to solving the above-mentioned technical problems lies in developing a safe, reliable, and stable wall drilling device for building construction. Summary of the Invention

[0007] In view of the many defects and shortcomings existing in the above-mentioned background technology, this utility model has made improvements and innovations, aiming to provide a simple, safe and reliable wall drilling device for building construction. It realizes multiple functions of the handle, so that while ensuring that the handle can be gripped and improving the stability of drilling, it can also spray water mist at the drilling position during the drilling process through the internal water source to reduce dust, ensure the working environment of workers when drilling, improve the clarity of vision, and protect the health of workers. It is also more convenient to use.

[0008] Another ingenious design of this utility model is the addition of a slanted triangular portion on the handle, which makes the outer diameter of the grip different at different positions, better suited to different hand sizes, and improving the grip experience for different users.

[0009] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides a wall drilling device for building construction, which is implemented by adopting the following design structure and the following technical solution:

[0010] A wall drilling device for building construction includes a drilling rig, a drill chuck ring on the drilling rig, and further includes:

[0011] The ring sleeve is attached to the outside of the drill chuck ring;

[0012] The handle is detachably installed on the lower part of the ring, and a water outlet is provided on the upper outer part of the handle;

[0013] The spraying assembly is movably connected to the outside of the handle, with one end connected to the water outlet, and is used to suppress dust near the drill bit.

[0014] The water pump assembly, located inside the handle, is used to output cleaning water from inside the handle to the spray assembly.

[0015] Preferably, the ring sleeve is fixedly or movably connected to the outside of the drill chuck ring, and a connecting cylinder is fixedly connected to the bottom of the ring sleeve. The bottom of the connecting cylinder has a threaded hole. The ring sleeve has multiple sets of grooves that are adapted to the drill chuck ring in the circumferential direction inside.

[0016] Preferably, the top of the handle is connected to a threaded connection part that is adapted to the threaded hole of the connecting cylinder, and a water storage cavity is vertically opened inside the handle. The water outlet is opened on the upper outer side of the handle near the drill bit end and is connected to the water storage cavity. An internal thread section is provided at the end of the water outlet.

[0017] The threaded connection is connected to the water storage cavity.

[0018] Preferably, the lower part of the handle near the water outlet has an inwardly opening for placing the spraying component. The upper part of the placement part has a connecting port, and the interior of the connecting port is connected to a connecting post. A rack segment is also provided on the connecting port. An installation groove is also provided inwardly in the middle of the placement part.

[0019] Preferably, the lower part of the handle away from the water outlet end is also provided with an inwardly slanted triangular part, the upper recess of the slanted triangular part is deeper than the lower recess, and a rubber pad that is adapted to it is fixedly connected to the slanted triangular part.

[0020] Preferably, the spraying assembly includes:

[0021] The upper two ends of the fixed frame are connected to the corresponding connecting posts by torsion springs;

[0022] The hose has one end detachably connected to the end of the water outlet and the other end inserted into the bottom of the mounting bracket.

[0023] The nozzle is connected to the outlet end of the hose and securely connects the hose to the mounting bracket.

[0024] Preferably, the fixing frame is generally called an L-shaped structure, with round holes adapted to the connecting column on the upper sides of the upper part of the fixing frame; a fixing hole for installing a flexible hose is opened through the bottom of the fixing frame; and a toothed section adapted to the rack section is also opened circumferentially on the upper periphery of the fixing frame.

[0025] The torsion springs are respectively disposed inside each circular hole, and the two ends of the torsion springs are fixedly connected to the inner side of the circular hole and the outer side of the connecting post, respectively.

[0026] The nozzle is an atomizing nozzle.

[0027] Preferably, the spraying assembly further includes a connecting assembly for connecting the mounting bracket, the connecting assembly comprising:

[0028] The first magnetic block is fixedly installed in the mounting slot;

[0029] The second magnetic block is embedded in the non-flexible mounting side of the fixing frame;

[0030] The first and second magnetic blocks are magnetically connected.

[0031] Preferably, the pump assembly includes:

[0032] A water pump is installed at the bottom of the water storage chamber.

[0033] The water supply pipe has one end connected to the output port of the water pump and the other end connected to the inner end of the outlet.

[0034] The power supply device is located inside the handle below the water storage chamber;

[0035] The start / stop button is located on the handle above the slanted triangle and is used to control the start and stop of the water pump.

[0036] Preferably, a power supply device protective cover is rotatably connected to the lower part of the grip, and the protective cover is snap-fitted to the grip.

[0037] The working principle is as follows: When in use, the user first pulls the fixing frame to separate the first and second magnetic blocks, so that the fixing frame rotates under the action of the torsion spring, causing the nozzle to rotate and move closer to the drill bit. At the same time, the hose adapts to deformation.

[0038] When drilling into the wall, the user presses the start / stop button, and the water pump of the water pump assembly delivers cleaning water to the outlet through the water supply pipe. The cleaning water is then sent into the nozzle through the hose connected to the outlet and sprayed out, which can achieve the adhesion and dust reduction of dust generated near the drilling hole.

[0039] During the above-mentioned use, when the fixing frame rotates under the action of the torsion spring and the nozzle rotates closer to the drill bit, the toothed section of the upper outer periphery of the fixing frame rotates along the rack section of the handle; when the hose adapts to deformation, the bending force of the hose can overcome the elastic force of the fixing frame and the torsion spring, so that the fixing frame is fixed in position. After spraying, the user can hold the fixing frame and rotate it into the placement part. In addition, with the cooperation of the first magnetic block and the second magnetic block, it is more convenient to store the spraying components.

[0040] The beneficial effects of this utility model compared with the prior art are:

[0041] 1. This utility model, through the designed grip component, can realize multiple functions of the handle. While ensuring that the handle can be gripped and improving the stability of drilling, it can also spray water mist on the drilling position during the drilling process through the internal water storage to reduce dust, ensure the working environment of the workers when drilling, improve the clarity of vision, and protect the health of the workers. It is also convenient to use.

[0042] 2. The oblique triangular part of this utility model allows the outer diameter of the grip to be different at different positions, making it more suitable for different sizes of hands and improving the grip experience for different users.

[0043] 3. This utility model uses a threaded part to connect with a ring sleeve, which facilitates the disassembly and installation of the handle, and also makes it convenient to perform water replenishment operations through the threaded connection part;

[0044] 4. By using the first and second magnetic blocks in conjunction, the mounting bracket can be attached to the surface of the placement part when the device is not in use, thus reducing the space required for storing the device. Attached Figure Description

[0045] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0046] Figure 1 This is a diagram showing the usage state of this utility model;

[0047] Figure 2 This is one of the overall structural schematic diagrams of this utility model;

[0048] Figure 3 This is the second schematic diagram of the overall structure of this utility model;

[0049] Figure 4 This is an exploded view of this utility model;

[0050] Figure 5 This is one of the partial structural schematic diagrams of this utility model;

[0051] Figure 6 This is the second partial structural schematic diagram of this utility model;

[0052] Figure 7 This is one of the partial structural cross-sectional views of this utility model;

[0053] Figure 8 This is a utility model Figure 7 A magnified view of a section at point A;

[0054] Figure 9 This is the second partial structural cross-sectional view of this utility model;

[0055] Figure 10 This is a partial enlarged view of part 9B of this utility model;

[0056] Figure 11 This is a partial exploded view of the structure of this utility model;

[0057] In the diagram, number 1 represents the drilling rig.

[0058] 2—Drill clamping ring;

[0059] 3—Ring;

[0060] 4—Handle, 41—Outlet, 42—Threaded connection, 43—Water storage chamber, 44—Placement, 45—Connecting post, 46—Mounting groove, 47—Angled triangular part;

[0061] 5—Spraying assembly, 51—Fixed bracket, 52—Torsion spring, 53—Hose, 54—Nozzle, 55—First magnetic block, 56—Second magnetic block;

[0062] 6—Water pump assembly, 61—Water pump, 62—Water delivery pipe, 63—Power supply device, 64—Start / stop button. Detailed Implementation

[0063] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] Example 1

[0065] As per the instruction manual Figure 1To the instruction manual Figure 11 As shown, a wall drilling device for building construction includes a drill rig 1, on which a drill clamping ring 2 is provided, characterized in that it further includes:

[0066] Ring 3, ring 3 is connected to the outside of the chuck ring 2;

[0067] The handle 4 is detachably installed on the lower part of the ring 3, and the upper part of the outer side of the handle 4 is provided with a water outlet 41;

[0068] The spraying component 5 is movably connected to the outside of the handle 4, and one end of it is connected to the water outlet 41 to suppress dust near the drill bit.

[0069] The water pump assembly 6 is located inside the handle 4 and is used to output the cleaning water inside the handle 4 to the spray assembly 5.

[0070] Furthermore, such as Figure 1 and Figure 4 As shown, the ring sleeve 3 is fixedly or movably connected to the outside of the drill clamping ring 2. A connecting cylinder is fixedly connected to the bottom of the ring sleeve 3, and a threaded hole for the connecting cylinder is opened at the bottom of the connecting cylinder. The ring sleeve 3 has multiple sets of slot sections that are adapted to the drill clamping ring 2 in a circumferential direction inside.

[0071] In this utility model, the outer side of the drill clamping ring 2 is provided with multiple sets of drill clamping ring toothed segments, which are adapted to the slotted segments on the ring sleeve 3; the ring sleeve 3 and the drill clamping ring 2 are fixedly connected, which is a welded connection or an adhesive connection; the ring sleeve 3 and the drill clamping ring 2 are movably connected, which is a snap-fit ​​connection after the sleeve is inserted.

[0072] Furthermore, such as Figure 8 and Figure 10 as well as Figure 11 As shown, the spraying assembly 5 includes:

[0073] The upper two ends of the fixing frame 51 are connected to the corresponding connecting posts 45 by torsion springs 52;

[0074] Hose 53, one end of which is detachably connected to the end of the outlet 41, and the other end is inserted into the bottom of the fixing bracket 51;

[0075] Nozzle 54 is connected to the water outlet end of hose 53 and securely connects hose 53 to bracket 51.

[0076] Specifically, such as Figure 11As shown, the fixing frame 51 is generally called an L-shaped structure. The upper sides of the upper part of the fixing frame 51 have round holes that are adapted to the connecting column 45. The bottom of the fixing frame 51 has a through fixing hole for installing the hose 53. The upper periphery of the fixing frame 51 also has toothed sections that are adapted to the rack section.

[0077] The torsion springs 52 are respectively disposed inside each round hole, and the two ends of the torsion springs 11 are respectively fixedly connected to the inner side of the round hole and the outer side of the connecting post 45.

[0078] The nozzle 54 is an atomizing nozzle.

[0079] More specifically, such as Figure 11 As shown, the spraying assembly 5 also includes a connecting assembly for connecting the mounting bracket 51, the connecting assembly comprising:

[0080] The first magnetic block 55 is fixedly installed in the mounting slot 46;

[0081] The second magnetic block 56 is embedded in the non-flexible hose 53 mounting side of the fixing frame 51;

[0082] The first magnetic block 55 and the second magnetic block 56 are magnetically connected.

[0083] In this invention, the magnetic poles of the connecting surfaces of the first magnetic block 55 and the second magnetic block 56 are opposite; when one side of the fixing frame 51 is parallel to one side of the placement part 44, the first magnetic block 55 and the second magnetic block 56 attract each other, and the connecting components can easily fit together when the fixing frame 51 is at a suitable angle, thereby improving the stability during fixing.

[0084] Furthermore, such as Figure 11 As shown, the water pump assembly 6 includes:

[0085] Water pump 61 is located at the bottom of water storage chamber 43;

[0086] Water supply pipe 62, one end of which is connected to the output port of water pump 61, and the other end is connected to the inner end of water outlet 41;

[0087] Power supply device 63 is installed inside the handle 4 located below the water storage chamber 43;

[0088] A start / stop button 64 is located on a handle 4 above the slanted triangular portion 47 and is used to control the start and stop of the water pump 61.

[0089] More specifically, such as Figure 11 As shown, a protective cover for the power supply device 63 is rotatably connected to the lower part of the grip 4, and the protective cover is snap-fitted to the grip 4.

[0090] In this utility model, one end of the power supply device 63 is provided with a charging port, which can charge the power supply device 63.

[0091] Before using the above-mentioned wall drilling device, it needs to be transported to the designated construction location by appropriate handling equipment or directly by manual labor.

[0092] When in use, the user first pulls the fixing frame 51 to separate the first magnetic block 55 and the second magnetic block 56, so that the fixing frame 51 rotates under the action of the torsion spring 52, causing the nozzle 54 to rotate and move closer to the drill bit. At the same time, the hose 53 adapts to deformation.

[0093] When drilling into the wall, the user presses the start / stop button 64, and the water pump 61 of the water pump assembly 6 delivers cleaning water to the outlet 41 through the water pipe 62. The cleaning water is then sent into the nozzle 54 through the hose 53 connected to the outlet 41 and sprayed out, thus achieving dust adhesion and dust reduction near the drilling hole.

[0094] During the above-mentioned use, when the fixing frame 51 rotates under the action of the torsion spring 52 and the nozzle 54 rotates closer to the drill bit, the toothed section of the upper outer periphery of the fixing frame 51 rotates along the rack section of the handle 4; when the hose 53 adapts to deformation, the bending force of the hose 53 can overcome the elastic force of the fixing frame 51 and the torsion spring 52, so that the fixing frame 51 is fixed in position. After spraying, the user can hold the fixing frame 51 and rotate it into the placement part 44. In addition, with the cooperation of the first magnetic block 55 and the second magnetic block 56, it is more convenient to store the spraying component 5.

[0095] In this utility model, the drill clamping ring 2 is used to facilitate the fixing and disassembly of the drill bit, which is a common technology on the drilling machine 1.

[0096] Example 2

[0097] This embodiment 2 is the same as embodiment 1, except that the top of the handle 4 is connected to a threaded connection part 42 that is adapted to the threaded hole of the connecting cylinder, and a water storage cavity 43 is vertically opened inside the handle 4. The water outlet 41 is opened on the upper outer side of the handle 4 near the drill bit end and is connected to the water storage cavity 43. An internal thread section is provided at the end of the water outlet 41.

[0098] The threaded connection part 42 is connected to the water storage cavity 43.

[0099] In this utility model, the threaded connection part 42 has a through opening in the middle, which is a water inlet.

[0100] Furthermore, such as Figure 2 and Figure 11As shown, the handle 4 near the outlet 41 has an inwardly opening at the lower part for placing the spraying component 5. The upper part of the placement part 44 has a connecting port, and the interior of the connecting port is connected to a connecting post 45. A rack section is also provided on the connecting port. An installation groove 46 is also provided inwardly in the middle of the placement part 44.

[0101] In use, this embodiment 2 is the same as that of embodiment 1. The only difference is that, in use, the handle 4 has multiple functions. This allows the handle 4 to not only ensure grip and improve drilling stability, but also to spray water mist at the drilling location during the drilling process through the internal water storage to reduce dust. This ensures the working environment for workers during drilling, improves the clarity of vision, and protects the health of workers. It is also more convenient to use.

[0102] Furthermore, friction pads are fixedly connected to the front and rear sides of one side of the mounting part 44, and mounting grooves 46 are provided on the mounting part 44. The friction pads are used to increase the friction when gripping, and the mounting grooves 46 are used to install the first magnetic block 55 for convenient use. A second magnetic block 56 is fixedly connected to the corresponding position of the fixing frame 51. The cooperation of the first magnetic block 55 and the second magnetic block 56 can facilitate the quick connection and disassembly between the fixing frame 51 and the handle 4 for convenient use.

[0103] Other uses are the same as in Example 1, and will not be repeated here.

[0104] Example 3

[0105] This embodiment 3 is the same as embodiment 1 and embodiment 2, except that the lower part of the handle 4 away from the outlet 41 is provided with an inwardly slanted triangular part 47. The upper recess of the slanted triangular part 47 is deeper than the lower recess. A rubber pad that is compatible with it is also fixedly connected to the slanted triangular part 47.

[0106] When this embodiment 3 is used, it is the same as that of embodiment 1 and embodiment 2. The only difference is that when this embodiment 2 is used, the oblique triangle 47 is used to adaptively adjust the maximum outer diameter of the grip for users with different hand sizes; the shape of the oblique triangle 47 can control the change of the maximum outer diameter of the grip 4, which can make it easy to fit a wider range of hand sizes in the most suitable grip position.

[0107] The oblique triangular portion 47 allows for different grip outer diameters at different positions of the handle 4, making it more suitable for different hand sizes and improving the grip experience for different users; the threaded connection portion 42 connects with the ring sleeve 3, facilitating the disassembly and installation of the handle 4, and also making it convenient to perform water replenishment operations from the threaded connection portion; the first magnet 55 and the second magnet 56 cooperate to allow the fixing bracket 51 to be attached to the surface of the mounting portion 44 when the device is not in use, reducing the space required for storing the device.

[0108] In the above embodiments 1 to 3, the threaded hole of the connecting cylinder is used to cooperate with the threaded connection part 42 to facilitate the disassembly and installation of the handle 4. The handle 4 makes it convenient for the user to hold the drill 1 and improves the stability during use.

[0109] The mounting part 44 is used to cooperate with the mounting bracket 51. The mounting bracket 51 has an L-shaped structure and a fixing hole at the bottom of the mounting bracket 51, so that the end of the hose 53 can pass through the fixing hole and be connected to the nozzle 54, which facilitates assembly.

[0110] The torsion spring 52 is used to rotate and open the fixing bracket 51 when it is not connected to the mounting part 44, saving the time required for operation and allowing the nozzle 54 to rotate quickly and approach the drill bit, making it convenient to spray when drilling holes in the wall.

[0111] The outlet 41 is used to allow the cleaning water stored inside the water storage chamber 43 to enter the nozzle 54 through the hose 53;

[0112] The water pump component 6 can be any of the existing mature technologies, such as a shower spray, which presses out water and uses Bernoulli's principle to force the water flow.

[0113] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A wall drilling device for building construction, comprising a drill (1), wherein a drill clamping ring (2) is provided on the drill (1), characterized in that, Also includes: Ring sleeve (3), ring sleeve (3) is connected to the outside of the chuck ring (2); The handle (4) is detachably installed on the lower part of the ring (3), and the handle (4) has an outlet (41) on the upper part of the outer side; The spraying assembly (5) is movably connected to the outside of the handle (4), and one end of it is connected to the water outlet (41) for dust suppression near the drill bit. The water pump assembly (6) is located inside the handle (4) and is used to output the cleaning water inside the handle (4) to the spray assembly (5).

2. The wall drilling device for building construction according to claim 1, characterized in that, The ring sleeve (3) is fixedly or movably connected to the outside of the drill chuck ring (2). A connecting cylinder is fixedly connected to the bottom of the ring sleeve (3). A threaded hole for the connecting cylinder is opened at the bottom of the connecting cylinder. The ring sleeve (3) has multiple sets of slot sections that are adapted to the drill chuck ring (2) in the circumferential direction.

3. The wall drilling device for building construction according to claim 1, characterized in that, The top of the handle (4) is connected to a threaded connection part (42) that is adapted to the threaded hole of the connecting cylinder. A water storage cavity (43) is vertically opened inside the handle (4). The water outlet (41) is opened on the upper outer side of the handle (4) near the drill bit end and is connected to the water storage cavity (43). An internal thread section is provided at the end of the water outlet (41). The threaded connection (42) is connected to the water storage cavity (43).

4. A wall drilling device for building construction according to claim 1 or 3, characterized in that, The handle (4) near the outlet (41) has an inwardly opening at the lower part for placing the spraying component (5). The upper part of the placement part (44) has a connecting port, and the inside of the connecting port is connected to a connecting post (45). A rack section is also provided on the connecting port. An installation groove (46) is also provided inwardly in the middle of the placement part (44).

5. A wall drilling device for building construction according to claim 1, characterized in that, The lower part of the handle (4) away from the outlet (41) is also provided with an inwardly slanted triangular part (47). The upper recess of the slanted triangular part (47) is deeper than the lower recess. A rubber pad that is compatible with it is also fixedly connected to the slanted triangular part (47).

6. A wall drilling device for building construction according to claim 1, characterized in that, The spraying assembly (5) includes: The upper two ends of the fixed frame (51) are connected to the corresponding connecting posts (45) by torsion springs (52); The hose (53) has one end detachably connected to the end of the outlet (41) and the other end inserted into the bottom of the fixing bracket (51); The nozzle (54) is connected to the water outlet of the hose (53) and the hose (53) is securely connected to the bracket (51).

7. A wall drilling device for building construction according to claim 6, characterized in that, The fixing frame (51) is generally called an L-shaped structure. The upper sides of the upper part of the fixing frame (51) are provided with round holes that are compatible with the connecting column (45). The bottom of the fixing frame (51) is provided with a fixing hole for installing the hose (53). The upper periphery of the fixing frame (51) is also provided with toothed sections that are compatible with the rack section. The torsion springs (52) are respectively disposed inside each round hole, and the two ends of the torsion springs (11) are respectively fixedly connected to the inner side of the round hole and the outer side of the connecting post (45). The nozzle (54) is an atomizing nozzle.

8. A wall drilling device for building construction according to claim 6, characterized in that, The spraying assembly (5) also includes a connecting assembly for connecting the mounting bracket (51), the connecting assembly comprising: The first magnetic block (55) is fixedly installed in the mounting groove (46); The second magnetic block (56) is embedded in the non-flexible (53) mounting side of the fixing frame (51); The first magnetic block (55) and the second magnetic block (56) are magnetically connected.

9. A wall drilling device for building construction according to claim 1, characterized in that, The pump assembly (6) includes: Water pump (61) is installed at the bottom of water storage chamber (43); Water delivery pipe (62), one end of which is connected to the output port of water delivery pump (61), and the other end is connected to the inner end of water outlet (41); Power supply device (63) is located inside the handle (4) below the water storage chamber (43); Start / stop button (64) is located on the handle (4) above the slanted triangle (47) and is used to control the start and stop of the water pump (61).

10. A wall drilling device for building construction according to claim 1 or 9, characterized in that, The lower part of the grip (4) is rotatably connected to a protective cover for a power supply device (63), which is snap-fitted to the grip (4).

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