Handheld dust fall drilling tool

Abstract

The utility model discloses a handheld dust fall drilling tool in the technical field of handheld drills, which comprises an electric drill shell and a shell for the handheld drilling tool, a driving motor and a water injection cavity are arranged in the electric drill shell, a water tank supplies water to the water injection cavity and conveys the water to a drill bit, and the water tank is arranged outside the electric drill shell. According to the device, water can be supplied to a drill hole through a cooling channel in the drill bit, water is supplied for cooling along a spiral groove of the drill hole, the drill bit is cooled, an ultrasonic oscillator is additionally arranged, water can be sprayed to the drill bit, scattered water drops are vibrated through the rotating centrifugal force of the drill bit, and the water drops are cooled. And therefore, the dust falling and cooling effects are achieved, and drilling is more convenient and cleaner.

Description

Technical Field

[0001] This utility model relates to the field of handheld drill technology, and in particular to a handheld dust-reducing drill tool. Background Technology

[0002] Handheld power tools are portable power tools that are typically powered by batteries or other portable power sources and are designed to be operated by hand, making them suitable for a variety of different applications and working environments.

[0003] Generally speaking, handheld power tools range from low-end high-strength impact drills to battery-powered portable electric drills, especially handheld simple electric screwdrivers.

[0004] In applications where torque and speed requirements are not high and the usage location needs to be changed frequently, portable power tools with their own batteries are more flexible to use and easier to operate.

[0005] Household electric drills with power cords are typically rated at 220V, matching the standard voltage of the household power grid. These drills require a power cord and have higher power, making them more dangerous.

[0006] Wireless drills typically operate on voltages between 12 and 20 volts, making them suitable for outdoor or power-free environments.

[0007] These drills all share a common drawback: their function is too limited. When drilling into walls, because home decoration surfaces are often coated with putty powder, forming a powdery wall, drilling becomes easier, but it also makes it easier for dust to spread, polluting the surrounding environment and causing the operator to inhale large amounts of dust.

[0008] Based on this, this utility model designs a handheld dust suppression drill to solve the above problems. Utility Model Content

[0009] The purpose of this invention is to provide a handheld dust-reducing drill bit. By incorporating a water tank, the device can deliver water to the borehole through the cooling channel inside the drill bit, and the water is also delivered along the spiral groove of the borehole to cool the drill bit. In addition, an ultrasonic oscillator is added, which can spray water onto the drill bit and vibrate the dispersed water droplets through the centrifugal force of the rotating drill bit, making the water droplets form a finer water mist, thereby achieving the effect of dust reduction and cooling, making drilling more convenient.

[0010] This utility model is implemented as follows: A handheld dust suppression drill, comprising:

[0011] Electric drill housing, drill bit, water tank, inner seals and outer seals;

[0012] The electric drill housing is the outer shell of a handheld drill. A drive motor is installed inside the electric drill housing. A water injection chamber is installed inside the front end of the electric drill housing. The water injection chamber is a closed cavity. The drive motor and the water injection chamber are sealed and isolated by an inner sealing element.

[0013] The water injection cavity is a cylindrical cavity. An inner seal is provided at the inner end of the water injection cavity, and an outer seal and a positioning bearing are provided at the front end of the water injection cavity. The positioning bearing is located on the front side of the outer seal.

[0014] The water tank is a closed container. The water tank is detachably and stably installed on the top of the electric drill housing. A connecting pipe is provided at the bottom of the water tank, and the outlet of the connecting pipe is sealed and inserted into the water injection chamber.

[0015] The drill bit is a round rod, and its rear end is clamped and stably transmitted to the drive motor.

[0016] The drill bit has a cooling channel inside, and a water inlet and a water outlet are opened on the outer wall of the drill bit; the water inlet and the water outlet are connected through the cooling channel.

[0017] The water outlet is located in the spiral groove at the front end of the drill bit, the water outlet is outside the water injection chamber, and the water inlet is within the water injection chamber.

[0018] The rear end of the drill bit passes through the inner seal and is inserted inside the electric drill housing, while the front end of the drill bit passes through the outer seal and the positioning bearing and extends outside the electric drill housing.

[0019] The axes of the drill bit, inner seal, outer seal, and positioning bearing are coincident;

[0020] An ultrasonic oscillator is also provided on the front exterior of the electric drill housing, and the ultrasonic oscillator is located at the top of the water injection chamber.

[0021] Furthermore, a battery and a drive motor are installed inside the drill housing, and the battery is connected to the drive motor via a switch;

[0022] The bottom of the drill housing is also provided with multiple heat dissipation holes, which penetrate the drill housing and are vertically downward.

[0023] Multiple heat dissipation holes are disposed between the water injection chamber and the drive motor;

[0024] The ultrasonic oscillator is connected to the battery via a switch.

[0025] Furthermore, a water inlet is provided on the top of the water tank, a sealing cap is provided on the water inlet of the water tank, and a quick-connect fitting for a water pipe is provided on the water inlet of the water tank.

[0026] Furthermore, the rear end of the drill bit is a transmission joint, which is a hexagonal rod, and the transmission joint is clamped and driven by the drive motor through a clamping head.

[0027] Furthermore, both the inner and outer seals are mechanical seals;

[0028] The outer seal does not contact the positioning bearing.

[0029] The beneficial effects of this utility model are: 1. This utility model cuts off the inside of the electric drill housing by adding an inner sealing component and an outer sealing component to form a closed water injection cavity. Then, a water tank is added and the water injection cavity is sealed to ensure that cooling water can flow from the water tank into the water injection cavity to form a coolant storage cavity, which is convenient for providing cooling water for subsequent drilling without affecting the drill bit.

[0030] 2. The drill bit of this device is designed with a water cooling channel, and the inlet and outlet positions are designed to guide the cooling water in the water injection chamber to the spiral groove of the drill bit, and flow into the hole along the drilling operation of the drill bit, so as to effectively cool the front end of the drill bit.

[0031] 3. This device also includes an ultrasonic oscillator, which can vibrate the water flowing out of the needle at high frequency, causing the water droplets sent by centrifugal force to be vibrated and dispersed, forming a mist that covers the area around the drill bit, effectively adhering to dust particles that escape from the environment during drilling, and achieving the effect of water mist dust removal. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the overall internal structure of this utility model;

[0034] Figure 2 This is a schematic diagram of the drill bit structure of this utility model.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Drill housing, 11-Drive motor, 12-Water filling chamber, 13-Battery, 14-Heat dissipation hole, 2-Drill bit, 21-Cooling channel, 22-Water inlet, 23-Water outlet, 24-Transmission joint, 3-Water tank, 31-Connecting pipe, 4-Inner seal, 41-Outer seal, 42-Positioning bearing, 5-Ultrasonic oscillator. Detailed Implementation

[0037] Please see Figure 1 and 2As shown, this utility model provides a handheld dust suppression drill. To better understand the above technical solution, the following will describe the above technical solution in detail with reference to the accompanying drawings and specific embodiments.

[0038] In a specific embodiment of the technical solution of this utility model:

[0039] It includes a drill housing 1, a drill bit 2, a water tank 3, an inner seal 4, and an outer seal 41;

[0040] The drill housing 1 serves as the outer shell of the handheld drill. Inside the drill housing 1 is a drive motor 11. A water injection chamber 12, a closed cavity, is located at the front end of the drill housing 1. The drive motor 11 and the water injection chamber 12 are sealed and isolated by an inner seal 4. Inside the drill housing 1 are a battery 13 and the drive motor 11. The battery 13 is connected to the drive motor 11 via a switch. The battery 13 is externally wrapped with multiple sealing layers and connected to the motor via a high-sealing power cable. The battery 13 is located in the handle, and the entire handle is sealed to ensure the overall airtightness of the battery section. This prevents the battery from being affected by coolant and ensures its airtightness. The front end of the drive motor 11 is also covered with a seal, leaving only a through hole for the central drive shaft. Additional sealing structures can be added if necessary. Even if water droplets seep in, they will only adhere to the inner wall of the drill housing 1 and will not splash. The adhered water droplets will be discharged through the heat dissipation holes 14.

[0041] The bottom of the outer shell of the electric drill housing 1 is also provided with multiple heat dissipation holes 14. The heat dissipation holes 14 penetrate the shell of the electric drill housing 1 and are vertically downward. The heat dissipation holes 14 are located on the rear side of the water injection chamber 12, that is, on the rear side of the inner sealing member 4.

[0042] Multiple heat dissipation holes 14 are disposed between the water injection chamber 12 and the drive motor 11. The heat dissipation holes 14 can further protect the battery 13. Once water droplets seep into the motor, they can flow away through the heat dissipation holes 14. They can also facilitate the dissipation of humid air and dissipate heat from the space where the drive motor 11 is located, thus effectively protecting the drive motor 11 and the battery 13.

[0043] The water injection cavity 12 is a cylindrical cavity. An inner seal 4 is provided at the inner end of the water injection cavity 12, and an outer seal 41 and a positioning bearing 42 are provided at the front end of the water injection cavity 12. The positioning bearing 42 is located on the front side of the outer seal 41.

[0044] Both the inner seal 4 and the outer seal 41 are mechanical seals, which effectively seal the water injection chamber 12 in both the front and rear directions. The outer seal 41 does not contact the positioning bearing 42 to avoid mutual interference and to ensure that the positioning bearing 42 can provide effective support, thus ensuring the drilling accuracy of the drill bit and the construction.

[0045] The water tank 3 is a closed container. The water tank 3 can be detachably and stably installed on the top of the electric drill housing 1. The bottom of the water tank 3 is provided with a connecting pipe 31, and the outlet of the connecting pipe 31 is sealed and inserted into the water injection chamber 12. The top of the water tank 3 is also provided with a water inlet. The water inlet of the water tank 3 is provided with a sealing cap and a quick-connect fitting for the water pipe. This facilitates the connection between the water tank 3 and the water pipe for water injection. It can also be continuously filled with water. Through the higher water pressure of the municipal water pipe or water pump, the water tank 3 is pressurized, so that the outlet 23 of the drill bit 2 receives a higher pressure water spray effect, forming a larger cooling water output. This can spray more dust to suppress dust and also cool the harder drilling carrier to prevent the drill bit from overheating.

[0046] The drill bit 2 is a round rod, and its rear end is clamped and stably transmitted to the drive motor 11.

[0047] The drill bit 2 has a cooling channel 21 inside, and a water inlet 22 and a water outlet 23 are opened on the outer wall of the drill bit 2; the water inlet 22 and the water outlet 23 are connected through the cooling channel 21.

[0048] The water outlet 23 is located in the spiral groove at the front end of the drill bit 2. The water outlet 23 is located outside the water injection chamber 12, while the water inlet 22 is located within the water injection chamber 12.

[0049] The rear end of the drill bit 2 passes through the inner seal 4 and is inserted into the inside of the electric drill housing 1. The front end of the drill bit 2 passes through the outer seal 41 and the positioning bearing 42 and extends out of the electric drill housing 1. The rear end of the drill bit 2 is the transmission joint 24, which is a hexagonal rod. The transmission joint 24 is clamped and driven by the drive motor through the clamping head.

[0050] The axes of drill bit 2, inner seal 4, outer seal 41 and positioning bearing 42 coincide;

[0051] An ultrasonic oscillator 5 is also installed on the front exterior of the drill housing 1, and is located on top of the water injection chamber 12. The ultrasonic oscillator 5 is connected to the battery 13 via a switch, and can directly act on the water droplets ejected from the water outlet 23 of the drill bit 2, which are then flung out by centrifugal force. This causes the water droplets to form a water mist when flung out, creating a water mist-like dust cover around the drill bit 2, effectively cooling and removing dust. The ultrasonic oscillator 5 is not limited to this; it can also be annular and directly fitted onto the front end of the positioning bearing 42, facilitating more uniform formation of water mist from the water droplets.

[0052] It should be noted that:

[0053] 1. Low-power and small-sized power tools generally have low power, usually between 20-30W. The built-in battery voltage is generally 3.6V or 7.2V DC, and the battery capacity is usually around 2000mAh. The no-load speed will not exceed 1000rpm. Moreover, these low-voltage and low-power power tools have less reaction force when used, and most importantly, they are safer and will not cause electric shock.

[0054] 2. The front end of this type of portable battery-powered tool is usually replaceable. It can be fitted with a fine-diameter drill bit or a screwdriver bit, thus enabling the switching between the functions of a drill and an electric screwdriver.

[0055] This device is designed to perform cooling and dust removal functions. Waterproofing needs to be considered during manufacturing. This device uses an inner seal 4 and an outer seal 41 to achieve a sealing effect. Depending on the actual situation, other sealing devices can also be used for the shell, as long as a sealing effect is achieved.

[0056] When using this utility model, the water tank 3 is filled with clean water, and a water valve is installed at the connecting pipe 31 at the bottom of the water tank 3 to control the injection or shutdown of cooling water.

[0057] Then install drill bit 2, ensuring that the water inlet 22 is placed inside the water injection chamber 12, and that the drill bit 2 is installed stably to ensure that it does not deviate and maintains stable transmission.

[0058] When the drive motor 11 starts, the drill bit 2 begins to rotate, and the water inlet 22 is submerged in the water in the water injection chamber 12. The cooling water is conveyed forward through the cooling channel 21 and sent out through the water outlet 23. The water outlet 23 is opened in the spiral groove of the drill bit 2, so that the cooling water flows along the spiral groove of the drill bit 2 and is continuously conveyed in the forward spiral direction, forming the effect of a spiral conveyor.

[0059] Some water droplets adhere to the outer wall of the drill bit 2 and are flung by centrifugal force. The ultrasonic oscillator 5 continuously vibrates the drill bit 2 at high frequency, which disperses the flung water droplets, forming a water mist that spreads out and forms a circular cover. This can adhere to the particles scattered during drilling, thus achieving the purpose of dust removal.

[0060] The front end of this device refers to the end where the hole is drilled, and the rear end refers to the end that is held in the hand. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0061] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A handheld dust suppression drill, characterized in that, include: The electric drill housing (1), drill bit (2), water tank (3), inner seal (4) and outer seal (41); The electric drill housing (1) is the outer shell of the handheld drill tool. The electric drill housing (1) is equipped with a drive motor (11). The front end of the electric drill housing (1) is equipped with a water injection chamber (12). The water injection chamber (12) is a closed cavity. The drive motor (11) and the water injection chamber (12) are sealed and isolated by an inner sealing element (4). The water injection cavity (12) is a cylindrical cavity. An inner sealing element (4) is provided at the inner end of the water injection cavity (12), and an outer sealing element (41) and a positioning bearing (42) are provided at the front end of the water injection cavity (12). The positioning bearing (42) is located on the front side of the outer sealing element (41). The water tank (3) is a closed container. The water tank (3) is detachably and stably installed on the top of the electric drill housing (1). A connecting pipe (31) is provided at the bottom of the water tank (3). The outlet of the connecting pipe (31) is sealed and inserted into the water injection chamber (12). The drill bit (2) is a round rod, and the rear end of the drill bit (2) is clamped and stably transmitted to the drive motor (11); The drill bit (2) has a cooling channel (21) inside, and a water inlet (22) and a water outlet (23) are opened on the outer wall of the drill bit (2); the water inlet (22) and the water outlet (23) are connected through the cooling channel (21); The water outlet (23) is located in the spiral groove at the front end of the drill bit (2), the water outlet (23) is located outside the water injection chamber (12), and the water inlet (22) is located within the water injection chamber (12); The rear end of the drill bit (2) is inserted into the inside of the electric drill housing (1) through the inner seal (4), and the front end of the drill bit (2) extends out of the outside of the electric drill housing (1) through the outer seal (41) and the positioning bearing (42). The axes of the drill bit (2), inner seal (4), outer seal (41) and positioning bearing (42) coincide; An ultrasonic oscillator (5) is also provided on the front exterior of the electric drill housing (1), and the ultrasonic oscillator (5) is located on the top of the water injection chamber (12).

2. The handheld dust suppression drill according to claim 1, characterized in that: The electric drill housing (1) is equipped with a battery (13) and a drive motor (11), and the battery (13) is connected to the drive motor (11) via a switch; The bottom of the outer shell of the electric drill housing (1) is also provided with a plurality of heat dissipation holes (14), which penetrate the shell of the electric drill housing (1) and are vertically downward. Multiple heat dissipation holes (14) are disposed between the water injection chamber (12) and the drive motor (11); The ultrasonic oscillator (5) is connected to the battery (13) via a switch.

3. The handheld dust suppression drill according to claim 1, characterized in that: The water tank (3) is also provided with a water inlet on the top, and a sealing cap is provided on the water inlet of the water tank (3). A quick-connect fitting for a water pipe is provided on the water inlet of the water tank (3).

4. The handheld dust suppression drill according to claim 1, characterized in that: The rear end of the drill bit (2) is a transmission joint (24), which is a hexagonal rod. The transmission joint (24) is clamped and driven by the drive motor through the clamping head.

5. A handheld dust suppression drill according to claim 1, characterized in that: Both the inner seal (4) and the outer seal (41) are mechanical seals; The outer seal (41) does not contact the positioning bearing (42).

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