Percussion drill with noise reduction function

Abstract

The utility model relates to the technical field of percussion drills, and discloses a percussion drill with a noise reduction function, which comprises a machine body, a motor is fixedly connected in the machine body, the output end of the motor is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with a buffer sleeve, and the outer wall of the buffer sleeve is fixedly connected with a plurality of groups of first bases which are in bilateral symmetry. A first universal ball is slidably connected to the interior of the first base, a damper is fixedly connected to one side of the outer wall of the first universal ball, a second universal ball is fixedly connected to the output end of the damper, sliding rods in an annular array are fixedly connected to the interior of the machine body, and sliding blocks are slidably connected to the two sides of the outer wall of each sliding rod. According to the percussion drill, force is transmitted to the sliding block through the damper, vibration force is dispersed through the sliding block, and therefore the second spring and the first spring buffer the force transmission process, the problem that noise is large due to vibration when the percussion drill is used is solved, and the using stability and applicability of the percussion drill are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of impact drills, in particular to an impact drill with a noise reduction function. Background Art

[0002] An impact drill is a commonly used power tool primarily used for drilling holes in hard materials such as masonry and concrete. Unlike conventional electric drills, an impact drill generates an impact force during drilling, making it easier to penetrate hard surfaces. Impact drills typically feature adjustable impact force and rotational speed to suit different drilling requirements. They can also be equipped with drill bits of varying sizes to accommodate holes of varying diameters.

[0003] The various components of an impact drill are connected in the following way: the motor is connected to the gearbox via a drive shaft, which in turn is connected to the impact mechanism, which secures the drill bit via a chuck. The handle is connected to the drill body, and control components such as the power switch, speed control, and forward / reverse switches are connected to the motor and other electrical components via wires. This connection ensures stable operation and achieves drilling performance through the coordinated action of various components.

[0004] Existing impact drills usually produce violent vibrations when in use, which results in loud noises during use. This noise not only causes inconvenience to users, but also interferes with the surrounding environment, especially when a quiet environment is required or when used in residential areas. Therefore, an impact drill with noise reduction function is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an impact drill with a noise reduction function, aiming to improve the problem that the impact drill in the prior art usually generates violent vibrations during use, which causes a lot of noise during use.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The cam is fixedly provided with a motor, and the outer wall of the motor is fixed with a spring, and the outer wall of the motor is fixed with a buffer sleeve, and the outer wall of the buffer sleeve is fixedly connected with a plurality of left-right symmetrical bases, the base is slidably connected with a universal ball, and one side of the outer wall of the universal ball is fixedly connected with a damper, and the output end of the damper is fixedly connected with a universal ball second. The slide rod is fixedly connected with a circular array inside the body, and the outer wall of the slide rod is slidably connected to the slider on both sides of the outer wall of the slider, and the outer wall of the universal ball second is slidably connected to the inner wall of the base second. The outer wall of the slide rod is sleeved with a spring second, and both ends of the spring second are fixedly connected to one side of the outer wall of the slider, and the outer wall of the slide rod is sleeved with a spring first, one end of the spring first is fixedly connected to the other side of the outer wall of the slider, and the other end of the spring first is fixedly connected to the inner wall of the body. A drilling assembly is provided on one side of the rotating shaft, and the drilling assembly is used for the impact drill to perform drilling operation;

[0008] As a further description of the above technical solution:

[0009] The drilling assembly includes a rotating head and a drill bit, wherein one side of the outer wall of the rotating head is fixedly connected to one end of the rotating shaft, and one side of the outer wall of the drill bit is slidably connected to the inside of the rotating head;

[0010] As a further description of the above technical solution:

[0011] A circular array of clamping grooves is provided on one side of the outer wall of the drill bit, and a circular array of clamping blocks is slidably connected inside the rotating head;

[0012] As a further description of the above technical solution:

[0013] One side of the outer wall of the clamping block is slidably connected to the inside of the clamping slot, and a rotating disk is rotatably connected to the inside of the rotating head;

[0014] As a further description of the above technical solution:

[0015] A column is fixedly connected to one side of the outer wall of the block, and an annular array of arc-shaped grooves is opened inside the rotating disk, and the outer wall of the column is slidably connected to the inside of the arc-shaped groove;

[0016] As a further description of the above technical solution:

[0017] The outer wall of the rotating head is threadedly connected to a fixing ring, and the outer wall of the rotating disk is fixedly connected to a ring-shaped array of connecting rods;

[0018] As a further description of the above technical solution:

[0019] The inner wall of the fixing ring is provided with an annular array of limiting grooves, and the outer wall of the connecting rod is slidably connected to the inside of the limiting grooves;

[0020] As a further description of the above technical solution:

[0021] A main handle is fixedly connected to one side of the bottom of the body, and an auxiliary handle is fixedly connected to the other side of the bottom of the body.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the present invention, the rotating shaft is first wrapped with a buffer sleeve, and the vibration force generated by the rotating shaft is reduced by the damper. At the same time, the damper transmits the force to the slider, and the slider disperses the vibration force, so that the force transmission process is buffered by the second spring and the first spring, which solves the problem of high noise caused by vibration when the impact drill is used, and improves the stability and applicability of the impact drill.

[0024] 2. In the utility model, the fixing ring is first rotated and tightened, and then the connecting rod can be driven by the limit groove, and the rotating disk can be driven to rotate. The arc groove on the inner wall of the rotating disk will drive the column, so that the card block is inserted into the card slot, and the drill bit can be fixed, which solves the problem of the inconvenience of fixing the drill bit and improves the convenience of replacing the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of an impact drill with noise reduction function proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the cross-sectional structure of an impact drill with noise reduction function proposed in the present invention;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the cross-sectional structure of the rotating head of an impact drill with noise reduction function proposed by the utility model.

[0029] Legend:

[0030] 1. Machine body; 2. Main handle; 3. Auxiliary handle; 4. Rotating head; 5. Drill bit; 6. Fixing ring; 7. Motor; 8. Rotating shaft; 9. Buffer sleeve; 10. Base 1; 11. Universal ball joint 1; 12. Damper; 13. Base 2; 14. Universal ball joint 2; 15. Slider; 16. Spring 1; 17. Spring 2; 18. Slot; 19. Rotating disk; 20. Column; 21. Block; 22. Connecting rod; 23. Arc groove; 24. Limit groove; 25. Slider. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: an impact drill with a noise reduction function, comprising a body 1, a motor 7 is fixedly connected to the body 1, an output end of the motor 7 is fixedly connected to a rotating shaft 8, an outer wall of the rotating shaft 8 is fixedly connected to a buffer sleeve 9, an outer wall of the buffer sleeve 9 is fixedly connected to multiple groups of bilaterally symmetrical bases 10, a universal ball 11 is slidably connected to the base 10, a damper 12 is fixedly connected to one side of the outer wall of the universal ball 11, and a universal ball 2 14 is fixedly connected to the output end of the damper 12. A slide rod 25 is fixedly connected to a ring array, and both sides of the outer wall of the slide rod 25 are slidably connected to the slider 15, one side of the outer wall of the slider 15 is fixedly connected to the base 2 13, and the outer wall of the universal ball 2 14 is slidably connected to the inner wall of the base 2 13. The outer wall of the slide rod 25 is sleeved with a spring 2 17, and both ends of the spring 2 17 are fixedly connected to one side of the outer wall of the slider 15. A spring 16 is sleeved on both sides of the outer wall of the slide rod 25, and one end of the spring 16 is fixedly connected to the other side of the outer wall of the slider 15, and the other end of the spring 16 is fixedly connected to the inner wall of the body 1;

[0033] Specifically, when using the impact drill, the vibration generated by the rotating shaft 8 will cause noise. In order to reduce this vibration, the outer wall of the rotating shaft 8 is wrapped with a buffer sleeve 9. The buffer sleeve 9 can withstand the vibration force of the rotating shaft 8 and transmit it to the damper 12. The damper 12 plays a role of vibration reduction. It consumes the energy generated by the vibration of the impact drill through its internal damping mechanism, thereby effectively reducing the spread of vibration. When the force is transmitted to the slider 15, it will drive the slider 15 to slide on the slide rod 25. This sliding effect enables the force to be dispersed to a wider area, reducing local stress concentration. At the same time, in the process of force dispersion, spring 2 17 and spring 1 16 play a buffering role. They can absorb and release part of the energy, further reducing the vibration effect of the rotating shaft 8. Through this structural design, the impact drill can maintain a relatively stable state during operation, reduce the impact of vibration on the operator, and also reduce the intensity of noise, and improve the comfort of the working environment. In addition, this buffering and vibration reduction mechanism also helps to extend the service life of the impact drill, reduce the occurrence of failures, and improve its reliability and durability.

[0034] Reference Figure 1 and Figure 4 , a drilling assembly is provided on one side of the rotating shaft 8, and the drilling assembly is used for the impact drill to perform drilling operations. The drilling assembly includes a rotating head 4 and a drill bit 5. One side of the outer wall of the rotating head 4 is fixedly connected to one end of the rotating shaft 8, and one side of the outer wall of the drill bit 5 is slidably connected to the inside of the rotating head 4. One side of the outer wall of the drill bit 5 is provided with a ring array of card grooves 18, and the rotating head 4 is internally slidably connected with a ring array of card blocks 21, and one side of the outer wall of the card block 21 is slidably connected to the inside of the card groove 18. The rotating head 4 is rotatably connected to a rotating disk 19, and one side of the outer wall of the card block 21 is fixedly connected to a column 20. An annular array of arc grooves 23 are provided inside the rotating disk 19, and the outer wall of the column 20 is slidably connected to the inside of the arc groove 23. The outer wall of the rotating head 4 is threadedly connected to a fixing ring 6, and the outer wall of the rotating disk 19 is fixedly connected to a connecting rod 22 of an annular array. The inner wall of the fixing ring 6 is provided with a limiting groove 24 of an annular array, and the outer wall of the connecting rod 22 is slidably connected to the inside of the limiting groove 24;

[0035] Specifically, when performing the replacement process of the drill bit 5, the drill bit 5 can be inserted into the interior of the rotating head 4. Then, by rotating the fixing ring 6, the limit groove 24 on its inner wall will accurately drive the connecting rod 22. As a result, the fixing ring 6 can simultaneously realize the self-locking function in the process of driving the connecting rod 22 to rotate. Then, through the transmission of the connecting rod 22, the rotating disk 19 can be driven to rotate. The rotation of the rotating disk 19 will drive the arc groove 23 to move, and then the inner wall of the arc groove 23 will push the column 20. When the column 20 is pushed, it will drive the block 21 to slide down, and finally the block 21 will be inserted into the slot 18 on the drill bit 5, thereby achieving firm fixation of the drill bit 5.

[0036] Reference Figure 1 and Figure 2 A main handle 2 is fixedly connected to one side of the bottom of the body 1, and an auxiliary handle 3 is fixedly connected to the other side of the bottom of the body 1;

[0037] Specifically, when the impact drill is in use, the main handle 2 can be used to pick it up and the auxiliary handle 3 can be held at the same time during operation, thereby ensuring its stability during operation.

[0038] Working principle: When using an impact drill, the rotating shaft 8 will vibrate, thereby generating noise. The outer wall of the rotating shaft 8 in the impact drill is wrapped with a buffer sleeve 9, which can withstand the vibration force of the rotating shaft 8. The force on the buffer sleeve 9 will be transmitted to the slider 15 through the damper 12, so that the damper 12 will reduce its vibration. At the same time, after the force is transmitted to the slider 15, it will drive the slider 15 to slide on the slide rod 25, so that the force can be dispersed through the slider 15. When the force is dispersed, it will be buffered by the spring 2 17 and the spring 1 16, thereby reducing the vibration of the rotating shaft 8. Vibration effect. When replacing the drill bit 5, the drill bit 5 can be inserted into the rotating head 4, and then the fixing ring 6 is rotated. The fixing ring 6 will drive the connecting rod 22 through the limit groove 24 on the inner wall, so that the fixing ring 6 can drive the connecting rod 22 to rotate and realize self-locking at the same time. Then, the rotating disk 19 can be driven to rotate through the connecting rod 22, and the rotation of the rotating disk 19 can drive the arc groove 23 to move, so that the inner wall of the arc groove 23 pushes the column 20, so that the column 20 drives the block 21 to slide down, so that the block 21 is inserted into the groove 18 on the drill bit 5, and the drill bit 5 can be fixed.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An impact drill with a noise reduction function, comprising a body (1), characterized in that: The body (1) is fixedly connected to a motor (7) inside, the output end of the motor (7) is fixedly connected to a rotating shaft (8), the outer wall of the rotating shaft (8) is fixedly connected to a buffer sleeve (9), the outer wall of the buffer sleeve (9) is fixedly connected to multiple groups of left-right symmetrical bases (10), the base (10) is slidably connected to a universal ball (11) inside, the outer wall of the universal ball (11) is fixedly connected to a damper (12), the output end of the damper (12) is fixedly connected to a universal ball (14), the body (1) is fixedly connected to a circular array of sliding rods (25), the outer walls of the sliding rods (25) are both slidably connected to sliders (15), One side of the outer wall of the slider (15) is fixedly connected to the base 2 (13), the outer wall of the universal ball 2 (14) is slidably connected to the inner wall of the base 2 (13), the outer wall of the slide rod (25) is sleeved with a spring 2 (17), both ends of the spring 2 (17) are fixedly connected to one side of the outer wall of the slider (15), both sides of the outer wall of the slide rod (25) are sleeved with a spring 1 (16), one end of the spring 1 (16) is fixedly connected to the other side of the outer wall of the slider (15), and the other end of the spring 1 (16) is fixedly connected to the inner wall of the body (1), and a drilling assembly is provided on one side of the rotating shaft (8), and the drilling assembly is used for the impact drill to perform drilling operations.

2. The impact drill with noise reduction function according to claim 1, characterized in that: The drilling assembly comprises a rotating head (4) and a drill bit (5); one side of an outer wall of the rotating head (4) is fixedly connected to one end of the rotating shaft (8); and one side of an outer wall of the drill bit (5) is slidably connected to the interior of the rotating head (4).

3. The impact drill with noise reduction function according to claim 2, characterized in that: A circular array of clamping grooves (18) is provided on one side of the outer wall of the drill bit (5), and a circular array of clamping blocks (21) is slidably connected inside the rotating head (4).

4. The impact drill with noise reduction function according to claim 3, characterized in that: One side of the outer wall of the clamping block (21) is slidably connected to the inside of the clamping slot (18), and a rotating disk (19) is rotatably connected to the inside of the rotating head (4).

5. The impact drill with noise reduction function according to claim 4, characterized in that: A column (20) is fixedly connected to one side of the outer wall of the clamping block (21), an annular array of arc grooves (23) are provided inside the rotating disk (19), and the outer wall of the column (20) is slidably connected to the inside of the arc groove (23).

6. The impact drill with noise reduction function according to claim 5, characterized in that: The outer wall of the rotating head (4) is threadedly connected to a fixing ring (6), and the outer wall of the rotating disk (19) is fixedly connected to an annular array of connecting rods (22).

7. The impact drill with noise reduction function according to claim 6, characterized in that: The inner wall of the fixing ring (6) is provided with an annular array of limiting grooves (24), and the outer wall of the connecting rod (22) is slidably connected to the inside of the limiting grooves (24).

8. The impact drill with noise reduction function according to claim 1, characterized in that: A main handle (2) is fixedly connected to one side of the bottom of the machine body (1), and an auxiliary handle (3) is fixedly connected to the other side of the bottom of the machine body (1).

Images