Handheld drill

Abstract

The utility model relates to the technical field of hand-held drills, and discloses a hand-held drill which comprises a hand-held drill mechanism and further comprises an adjusting mechanism, a supporting mechanism and a protection mechanism, the side face of the hand-held drill mechanism is fixedly connected with the side face of the protection mechanism, and the side face of the protection mechanism is movably connected with the side face of the adjusting mechanism. The side face of the supporting mechanism is fixedly connected with the side face of the adjusting mechanism, and the handheld drill mechanism comprises a handheld drill body. The adjusting mechanism is adjusted according to use requirements to enable the supporting mechanism and the drill bit to keep a proper inclination angle, an operator holds the main grab handle and the auxiliary grab handle during use, and when the pressure spring pushes the mounting ring, the telescopic cylinder moves leftwards along the inner wall of the side face of the protective cylinder to enable the supporting mechanism to be always attached to the surface of an object needing to be drilled. The drill bit is prevented from being exposed in air, the handheld drill body is started to drive the drill bit to rotate and push the handheld drill body, the drill bit gets close to an object needing to be drilled for drilling, and the safety of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hand drills, and more specifically to a hand drill. Background Art

[0002] A hand-held electric drill is a drilling tool powered by an AC power supply or a DC battery. It is a type of hand-held power tool and is widely used in industries such as construction, decoration, and furniture. It is used to drill holes or penetrate objects on objects. In some industries, it is also called a hammer drill. The main components of a hand-held electric drill are: a drill chuck, an output shaft, gears, a rotor, a stator, a housing, a switch, and a cable.

[0003] Deficiencies of the prior art: When using a hand drill, the operator holds the handle of the hand drill and aligns the drill bit with the position where the hole needs to be drilled for drilling operations. However, when drilling a hole with a certain angle, it is impossible to accurately determine the angle between the drill bit and the object, and deviations are likely to occur. At the same time, the drill bit is mostly directly exposed to the air, and it is easy to be accidentally touched during use, which is likely to cause harm to the operator. Summary of the Utility Model

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a hand drill to solve the problems existing in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A hand drill includes a hand drill mechanism, and further includes: an adjustment mechanism, a support mechanism, and a protection mechanism. The side surface of the hand drill mechanism is fixedly connected to the side surface of the protection mechanism. The side surface of the protection mechanism is movably connected to the side surface of the adjustment mechanism. The side surface of the support mechanism is fixedly connected to the side surface of the adjustment mechanism. The hand drill mechanism includes a hand drill main body. A drill bit is fixedly connected to the side surface of the hand drill main body. A main handle is fixedly connected to the bottom end of the hand drill main body. An auxiliary handle is fixedly connected to the bottom end of the hand drill main body. The protection mechanism includes a protection cylinder. The side surface of the protection cylinder is fixedly connected to the side surface of the hand drill main body. A telescopic cylinder is movably connected to the inner side surface of the protection cylinder. A pressure spring is fixedly connected to the side surface of the protection cylinder. An installation ring is fixedly connected to the side surface of the pressure spring. The inner side surface of the installation ring is fixedly connected to the side surface of the telescopic cylinder.

[0006] Further, the adjustment mechanism includes a movable sleeve. The side surface of the movable sleeve is movably sleeved on the side surface of the telescopic cylinder. A first mounting bracket is fixedly connected to the top end of the movable sleeve. A mounting shaft is movably sleeved at the bottom end of the first mounting bracket. A second mounting bracket is fixedly connected to the bottom end of the mounting shaft. The support mechanism includes a support plate. The side surface of the support plate is fixedly connected to the side surface of the second mounting bracket. A through groove is provided on the side surface of the support plate.

[0007] Further, a second worm gear is fixedly sleeved on the side surface of the installation shaft, a first worm is movably sleeved on the top end of the first mounting bracket, the side surface of the first worm meshes with the side surface of the second worm gear, and a first hexagonal groove is formed on the side surface of the first worm.

[0008] Further, an angle scale is provided at the top end of the second mounting bracket, and a pointer is fixedly connected to the side surface of the first mounting bracket at a position corresponding to the angle scale.

[0009] Further, a third mounting bracket is fixedly connected to the top end of the telescopic cylinder, a second worm is movably sleeved on the side surface of the third mounting bracket, a first worm gear is fixedly sleeved on the side surface of the movable sleeve, the top end of the first worm gear meshes with the bottom end of the second worm, and a second hexagonal groove is formed on the side surface of the second worm.

[0010] Further, a mounting hole is formed on the side surface of the support plate, a return spring is fixedly connected to the side surface of the mounting hole, a pressing block is fixedly connected to the side surface of the return spring, a connecting rod is fixedly connected to the side surface of the pressing block, a through hole is formed on the side surface of the mounting hole, and a marking ring is fixedly connected to the side surface of the connecting rod.

[0011] Further, length scales are provided on the side surfaces of the marking ring and the telescopic cylinder, an anti-slip pad is fixedly connected to the side surface of the support plate, a dust-proof curtain is fixedly connected to the side surface of the support plate, and the side surface of the movable sleeve is fixedly connected to the side surface of the dust-proof curtain.

[0012] The technical effects and advantages of the present utility model:

[0013] 1. When the installation ring is pushed by the pressure spring in the present utility model, the telescopic cylinder moves to the left along the inner wall of the side surface of the protection cylinder, so that the support mechanism moves to the left side of the end of the drill bit, avoiding the drill bit being exposed to the air. The adjusting mechanism is adjusted according to the use requirements to make the support mechanism keep an appropriate inclination angle with the drill bit. When the operator uses it, he holds the main handle and the auxiliary handle and makes the support mechanism closely adhere to the surface of the object to be drilled. The handheld drill main body is started to drive the drill bit to rotate, and the handheld drill main body is pushed to make the drill bit approach the object to be drilled for drilling. At the same time, the pressure spring contracts, and the telescopic cylinder moves to the right along the inner wall of the side surface of the protection cylinder, which is beneficial to improving the safety of the equipment.

[0014] 2. The utility model drives the installation shaft to rotate by inserting a hexagonal wrench into the first hexagonal card slot and rotating the first worm, and the first worm meshes with the installation shaft to drive the installation shaft to rotate, driving the second installation bracket to rotate. When the second installation bracket rotates, the inclination angle between the support plate and the drill bit is determined by the position of the pointer on the side of the first installation bracket on the angle scale, so as to determine the inclination angle between the drilled hole and the surface of the object, keep the support plate and the drill bit at an appropriate inclination angle, and according to the operating habits of the operator, insert the hexagonal wrench into the second hexagonal card slot and rotate the second worm, and the second worm meshes with the first worm gear to drive the movable sleeve to rotate, so that the support plate tilts in a suitable direction, which is convenient for the operator to use, is beneficial to improving the flexibility of the equipment, and improves the quality of the drilled inclined hole.

[0015] 3. The mounting holes of the utility model are evenly distributed around the support plate. When in use, the side of the support plate needs to be closely attached to the surface of the object. When the side of the support plate contacts the surface of the object, the pressing block retracts into the mounting hole, so that the connecting rod extends out of the through hole, and the marking ring is used to quickly determine whether the connecting rod extends out. When all four marking rings extend out, it indicates that the surface of the support plate is closely attached to the surface of the object, otherwise, the support plate is adjusted continuously, which is convenient for adjusting the equipment and is beneficial to improving the work efficiency. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 is a schematic diagram of the structure of the protection mechanism of the utility model;

[0018] Figure 3 is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0019] Figure 4 is of the utility model Figure 3 schematic diagram of the structure at position A;

[0020] Figure 5 is a schematic diagram of the structure of the support mechanism of the utility model;

[0021] Figure 6 is a schematic diagram of the sectional structure at the through hole of the utility model.

[0022] The reference numerals are: 1, hand-held drill mechanism; 101, hand-held drill body; 102, drill bit; 103, auxiliary grip; 104, main grip; 2, adjustment mechanism; 201, movable sleeve; 202, first worm gear; 203, first mounting bracket; 204, second mounting bracket; 205, first worm; 206, mounting shaft; 207, angle scale; 208, first hexagonal card slot; 209, second worm gear; 3, support mechanism; 301, support plate; 302, dust-proof curtain; 303, through hole; 304, through slot; 305, marking ring; 306, pressing block; 307, mounting hole; 308, connecting rod; 309, return spring; 4, protection mechanism; 401, protection cylinder; 402, telescopic cylinder; 403, pressure spring; 404, second worm; 405, second hexagonal card slot; 406, third mounting bracket; 407, mounting ring. Detailed implementation mode

[0023] The technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. In addition, the forms of each structure described in the following embodiments are only examples, and a hand-held drill related to the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] Refer to Figures 1 to 6, the present utility model provides a hand drill, including a hand drill mechanism 1, and further including: an adjustment mechanism 2, a support mechanism 3, and a protection mechanism 4. The side of the hand drill mechanism 1 is fixedly connected to the side of the protection mechanism 4. The side of the protection mechanism 4 is movably connected to the side of the adjustment mechanism 2. The side of the support mechanism 3 is fixedly connected to the side of the adjustment mechanism 2. The hand drill mechanism 1 includes a hand drill main body 101. A drill bit 102 is fixedly connected to the side of the hand drill main body 101. A main grip 104 is fixedly connected to the bottom end of the hand drill main body 101. An auxiliary grip 103 is fixedly connected to the bottom end of the hand drill main body 101. The protection mechanism 4 includes a protection cylinder 401. The side of the protection cylinder 401 is fixedly connected to the side of the hand drill main body 101. A telescopic cylinder 402 is movably connected to the inner side wall of the side of the protection cylinder 401. A pressure spring 403 is fixedly connected to the side of the protection cylinder 401. An installation ring 407 is fixedly connected to the side of the pressure spring 403. The inner side wall of the side of the installation ring 407 is fixedly connected to the side of the telescopic cylinder 402. When the device is not in use, the pressure spring 403 pushes the installation ring 407, and the telescopic cylinder 402 moves to the left along the inner side wall of the side of the protection cylinder 401, so that the support mechanism 3 moves to the left side of the end of the drill bit 102, avoiding the drill bit 102 being exposed to the air. Adjust the adjustment mechanism 2 according to the use requirements to make the support mechanism 3 and the drill bit 102 maintain a suitable inclination angle. When the operator uses it, hold the main grip 104 and the auxiliary grip 103 and make the support mechanism 3 closely adhere to the surface of the object to be drilled. Start the hand drill main body 101 to drive the drill bit 102 to rotate, push the hand drill main body 101 to make the drill bit 102 approach the object to be drilled for drilling. At the same time, the pressure spring 403 contracts, and the telescopic cylinder 402 moves to the right along the inner side wall of the side of the protection cylinder 401.

[0025] Among them, the adjustment mechanism 2 includes a movable sleeve 201. The side of the movable sleeve 201 is movably sleeved with the side of the telescopic cylinder 402. A first mounting bracket 203 is fixedly connected to the top end of the movable sleeve 201. A mounting shaft 206 is movably sleeved at the bottom end of the first mounting bracket 203. A second mounting bracket 204 is fixedly connected to the bottom end of the mounting shaft 206. The support mechanism 3 includes a support plate 301. The side of the support plate 301 is fixedly connected to the side of the second mounting bracket 204. A through groove 304 is formed on the side of the support plate 301. According to the use requirements, the mounting shaft 206 rotates to drive the second mounting bracket 204 to rotate, so that the support plate 301 and the drill bit 102 maintain a suitable inclination angle, and according to the operator's usage habit, rotate the movable sleeve 201 to make the support plate 301 tilt in different directions, which is convenient for the operator to use.

[0026] Among them, a second worm gear 209 is fixedly sleeved on the side surface of the installation shaft 206, a first worm 205 is movably sleeved on the top end of the first mounting bracket 203, the side surface of the first worm 205 meshes with the side surface of the second worm gear 209, a first hexagonal groove 208 is formed on the side surface of the first worm 205, and a hexagonal wrench is inserted into the first hexagonal groove 208 to rotate the first worm 205. The first worm 205 drives the installation shaft 206 to rotate through meshing with the installation shaft 206.

[0027] Among them, an angle scale 207 is provided at the top end of the second mounting bracket 204, a pointer is fixedly connected to the side surface of the first mounting bracket 203 at a position corresponding to the angle scale 207. When the second mounting bracket 204 rotates, the inclination angle of the support plate 301 and the drill bit 102 is determined by the position of the pointer on the side surface of the first mounting bracket 203 on the angle scale 207, so as to determine the inclination angle of the drilled hole and the object surface.

[0028] Among them, a third mounting bracket 406 is fixedly connected to the top end of the telescopic cylinder 402, a second worm 404 is movably sleeved on the side surface of the third mounting bracket 406, a first worm gear 202 is fixedly sleeved on the side surface of the movable sleeve 201, the top end of the first worm gear 202 meshes with the bottom end of the second worm 404, a second hexagonal groove 405 is formed on the side surface of the second worm 404, and a hexagonal wrench is inserted into the second hexagonal groove 405 to rotate the second worm 404. The second worm 404 drives the movable sleeve 201 to rotate through meshing with the first worm gear 202.

[0029] Among them, a mounting hole 307 is formed on the side surface of the support plate 301, a return spring 309 is fixedly connected to the side surface of the mounting hole 307, a pressing block 306 is fixedly connected to the side surface of the return spring 309, a connecting rod 308 is fixedly connected to the side surface of the pressing block 306, a through hole 303 is formed on the side surface of the mounting hole 307, a marking ring 305 is fixedly connected to the side surface of the connecting rod 308, and the mounting holes 307 are evenly distributed around the support plate 301. During use, the side surface of the support plate 301 needs to be closely attached to the object surface. When the side surface of the support plate 301 contacts the object surface, the pressing block 306 retracts into the mounting hole 307, so that the connecting rod 308 extends out of the through hole 303, and it is quickly determined whether the connecting rod 308 extends out through the marking ring 305. When all four marking rings 305 extend out, it indicates that the surface of the support plate 301 is closely attached to the object surface, otherwise, the support plate 301 is adjusted continuously.

[0030] Among them, length scales are provided on the sides of both the marking ring 305 and the telescopic cylinder 402. An anti-slip pad is fixedly connected to the side of the support plate 301, and a dust-proof curtain 302 is fixedly connected to the side of the support plate 301. The side of the movable sleeve 201 is fixedly connected to the side of the dust-proof curtain 302. The moving distance of the telescopic cylinder 402 is determined by the scale on the surface of the telescopic cylinder 402, so as to determine the depth of the hole drilled by the drill bit 102. The support plate 301 and the telescopic cylinder 402 are connected by the dust-proof curtain 302 made of elastic material to prevent dust from spreading into the air during drilling.

[0031] The working principle of the present utility model: When the device is not in use, the pressure spring 403 pushes the mounting ring 407, and the telescopic cylinder 402 moves to the left along the inner wall of the side surface of the protective cylinder 401, causing the support plate 301 to move to the left side of the end of the drill bit 102, preventing the drill bit 102 from being exposed to the air. According to the usage requirements, insert a hexagonal wrench into the first hexagonal card slot 208 and rotate the first worm 205. The first worm 205 meshes with the mounting shaft 206 to drive the mounting shaft 206 to rotate, driving the second mounting bracket 204 to rotate. When the second mounting bracket 204 rotates, the inclination angle between the support plate 301 and the drill bit 102 is determined by the position of the pointer on the side surface of the first mounting bracket 203 on the angle scale 207, thereby determining the inclination angle between the drilled hole and the surface of the object, so that the support plate 301 and the drill bit 102 maintain an appropriate inclination angle. According to the operating habits of the operator, insert the hexagonal wrench into the second hexagonal card slot 405 and rotate the second worm 404. The second worm 404 meshes with the first worm gear 202 to drive the movable sleeve 201 to rotate, making the support plate 301 tilt in the appropriate direction for the convenience of the operator. When the operator uses it, hold the main grip 104 and the auxiliary grip 103 and make the support plate 301 closely adhere to the surface of the object to be drilled. When the side surface of the support plate 301 contacts the surface of the object, the pressing block 306 retracts into the mounting hole 307, causing the connecting rod 308 to extend out of the through hole 303, and quickly determining whether the connecting rod 308 extends through the marking ring 305. When all four marking rings 305 extend, it indicates that the surface of the support plate 301 is closely adhered to the surface of the object. Otherwise, continue to adjust the support plate 301. Start the handheld drill main body 101 to drive the drill bit 102 to rotate, push the handheld drill main body 101 to make the drill bit 102 approach the object to be drilled for drilling. At the same time, the pressure spring 403 contracts, and the telescopic cylinder 402 moves to the right along the inner wall of the side surface of the protective cylinder 401.

[0032] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A handheld drill, comprising a handheld drill mechanism (1), characterized in that: Also includes: The handheld drill mechanism (1) comprises an adjusting mechanism (2), a supporting mechanism (3) and a protecting mechanism (4), wherein the side of the handheld drill mechanism (1) is fixedly connected to the side of the protecting mechanism (4), the side of the protecting mechanism (4) is movably connected to the side of the adjusting mechanism (2), the side of the supporting mechanism (3) is fixedly connected to the side of the adjusting mechanism (2), the handheld drill mechanism (1) comprises a handheld drill body (101), a drill bit (102) is fixedly connected to the side of the handheld drill body (101), a main handle (104) is fixedly connected to the bottom end of the handheld drill body (101), and the handheld drill body (101) is fixedly connected to the main handle (104). The bottom end of the drill body (101) is fixedly connected to an auxiliary handle (103), the protective mechanism (4) comprises a protective tube (401), the side of the protective tube (401) is fixedly connected to the side of the handheld drill body (101), the inner wall of the side of the protective tube (401) is movably connected to a telescopic tube (402), the side of the protective tube (401) is fixedly connected to a pressure spring (403), the side of the pressure spring (403) is fixedly connected to a mounting ring (407), and the inner wall of the side of the mounting ring (407) is fixedly connected to the side of the telescopic tube (402).

2. A handheld drill according to claim 1, characterized in that: The adjustment mechanism (2) comprises a movable sleeve (201), the side of the movable sleeve (201) being movably connected to the side of the telescopic cylinder (402), the top of the movable sleeve (201) being fixedly connected to a first mounting frame (203), the bottom of the first mounting frame (203) being movably connected to a mounting shaft (206), the bottom of the mounting shaft (206) being fixedly connected to a second mounting frame (204), and the support mechanism (3) comprising a support plate (301), the side of the support plate (301) being fixedly connected to the side of the second mounting frame (204), and the side of the support plate (301) being provided with a through slot (304).

3. A handheld drill according to claim 2, characterized in that: A second worm gear (209) is fixedly sleeved on the side of the installation shaft (206), a first worm (205) is movably sleeved on the top of the first installation frame (203), a side of the first worm (205) is meshed with a side of the second worm gear (209), and a first hexagonal slot (208) is provided on the side of the first worm (205).

4. A handheld drill according to claim 2, characterized in that: An angle scale (207) is provided at the top of the second mounting frame (204), and a pointer is fixedly connected to the side surface of the first mounting frame (203) at a position corresponding to the angle scale (207).

5. A handheld drill according to claim 2, characterized in that: The top end of the telescopic cylinder (402) is fixedly connected to a third mounting frame (406), the side of the third mounting frame (406) is movably sleeved with a second worm (404), the side of the movable sleeve (201) is fixedly sleeved with a first worm wheel (202), the top end of the first worm wheel (202) and the bottom end of the second worm (404) are meshed with each other, and the side of the second worm (404) is provided with a second hexagonal slot (405).

6. A handheld drill according to claim 2, characterized in that: A mounting hole (307) is provided on the side of the support plate (301); a return spring (309) is fixedly connected to the side of the mounting hole (307); a pressure block (306) is fixedly connected to the side of the return spring (309); a connecting rod (308) is fixedly connected to the side of the pressure block (306); a through hole (303) is provided on the side of the mounting hole (307); and a marking ring (305) is fixedly connected to the side of the connecting rod (308).

7. A handheld drill according to claim 6, characterized in that: The side surface of the marking ring (305) and the side surface of the telescopic cylinder (402) are both provided with length scales, the side surface of the support plate (301) is fixedly connected to an anti-slip pad, the side surface of the support plate (301) is fixedly connected to a dustproof curtain (302), and the side surface of the movable sleeve (201) is fixedly connected to the side surface of the dustproof curtain (302).

Images