A gear switching structure for electric drill

Abstract

The utility model discloses a gear switching structure of an electric drill, comprising an electric drill and a drill bit arranged on one side of the electric drill, a front box body is arranged between the electric drill and the drill bit, and the front box body is transversely located on one side of the electric drill, a driving shaft is transversely arranged inside the front box body, and the driving shaft is driven to rotate inside the electric drill, a second transmission gear is arranged between the driving shaft and the electric drill, and the second transmission gear is drivingly connected to the driving shaft, and the other end of the driving shaft is drivingly connected to the drill bit, a positioning sleeve is arranged between the driving shaft and the front box body, and the positioning sleeve is transversely inserted into the front box body, and the driving shaft passes through the positioning sleeve, a paddle is arranged on one side of the positioning sleeve, and the driving shaft passes through the paddle, and the paddle rotates on the driving shaft, a first transmission gear is rotatably arranged on one side of the paddle, and the first transmission gear and the second transmission gear are parallel to and in contact with each other, and the first transmission gear and the driving shaft rotate coaxially.

Description

Technical Field

[0001] The utility model relates to the field of electric drills, in particular to a gear switching structure of an electric drill. Background Art

[0002] The impact drill is a commonly used electric tool for decoration. For the convenience of use, it is usually provided with three gears: screw gear, electric drill gear and impact gear. The three gears are usually adjusted by adjusting the torque of the internal structure of the inner drill and whether to jump gears. The most common method is to rotate the torque cover for adjustment. However, in the existing impact drill adjustment process, the torque cover has a too long torque range, which sometimes affects the work quality and speed due to insufficient torque adjustment during use, and also brings potential safety hazards during use. Therefore, a gear switching structure of an electric drill is proposed. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0004] A gear switching structure for an electric drill comprises an electric drill and a drill bit arranged on one side of the electric drill, a front box body is arranged between the electric drill and the drill bit, and the front box body is transversely located on one side of the electric drill, a driving shaft is transversely arranged inside the front box body, and the driving shaft is driven to rotate inside the electric drill, a second transmission gear is arranged between the driving shaft and the electric drill, and the second transmission gear is drivingly connected to the driving shaft, and then the driving shaft is driven to rotate through the second transmission gear, and the other end of the driving shaft is drivingly connected to the drill bit, a positioning sleeve is arranged between the driving shaft and the front box body, and the positioning sleeve is transversely inserted into the front box body, and the driving shaft passes through the positioning sleeve, a paddle is arranged on one side of the positioning sleeve, and the driving shaft passes through the paddle, and the paddle rotates on the driving shaft, a first transmission gear is rotatably arranged on one side of the paddle, and the first transmission gear is sleeved on the driving shaft, the first transmission gear and the second transmission gear are parallel to and in contact with each other, and the first transmission gear and the driving shaft rotate coaxially.

[0005] Preferably, a knob is further provided between the electric drill and the drill bit, and the knob is mounted on one side of the outside of the electric drill, the knob is rotated on one side of the outside of the electric drill, and the knob is rotated outside the front box, the knob is formed with a slot, and the slot is located on one side of the inside of the knob, and one side of the pick is inserted into the slot.

[0006] Preferably, the front box body is provided with a bracket, and the bracket is laterally located at the side of the outside of the front box body, a glass bead is provided on the top of the bracket, and the glass bead contacts the side inside the knob, and the other side of the knob is formed with a first positioning groove and a second positioning groove that cooperate with the glass bead.

[0007] Preferably, a pressure plate is provided between the front box body and the electric drill, and the pressure plate is vertically provided at one side of the electric drill, the other side of the pressure plate is connected to the front box body, and the driving shaft passes through the pressure plate.

[0008] Preferably, a light board is provided between the pressing plate and the front box body, and the light board is vertically located on one side of the electric drill, and the pressing plate and the light board are connected on both sides of the light board.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the first transmission gear is angularly offset by the paddle, so that the first transmission wheel and the second transmission gear are meshed, and then the driving shaft drives the drill bit to rotate through the transmission between the first transmission wheel and the second transmission gear, and finally the electric drill impacts through the rotating drill bit; and when the paddle resets the angle of the first transmission gear, the first transmission gear and the second transmission gear are disengaged, so that the teeth of the first transmission gear and the teeth of the second transmission gear abut against each other, so that the driving shaft and the drill bit stop rotating, and then the electric drill stops running, and the knob is turned on the electric drill. When the drill is rotated, the driving paddle swings, thereby driving the first transmission gear to be angularly offset to facilitate the subsequent gear switching of the electric drill, and when the knob is rotated to switch the gear on the electric drill, the ball will be stuck in the first positioning groove. At this time, the paddle that drives the first transmission wheel and the second transmission gear to engage is limited and fixed, so that the driving shaft can drive the drill bit to rotate, and when the ball is stuck in the second positioning groove, the paddle that drives the first transmission wheel and the second transmission gear to be separated is limited and fixed, so that the driving shaft cannot drive the drill bit to rotate, and the knob is limited and fixed when the gear is rotated to switch the gear on the electric drill.

[0010] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a structural schematic diagram of a gear switching structure of an electric drill;

[0013] Figure 2 Another structural schematic diagram of a gear switching structure of an electric drill;

[0014] Figure 3 It is a schematic diagram of the structure of the knob;

[0015] Figure 4 is another structural schematic diagram of the knob;

[0016] Figure 5 is a schematic diagram of the structure of the lamp cover;

[0017] Figure 6 It is another structural schematic diagram of the knob.

[0018] Shown in the figure: 1. electric drill, 2. knob, 3. drill bit, 4. front box, 5. pick, 6. positioning sleeve, 7. slot, 8. drive shaft, 9. bracket, 10. glass bead, 11. light board, 12. pressure plate, 13. first positioning slot, 14. second positioning slot, 15. first transmission gear, 16. second transmission gear. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6In an embodiment of the utility model, a gear switching structure of an electric drill comprises an electric drill 1 and a drill bit 3 arranged on one side of the electric drill 1, a front box body 4 is arranged between the electric drill 1 and the drill bit 3, and the front box body 4 is transversely located on one side of the electric drill 1, a driving shaft 8 is transversely arranged inside the front box body 4, and the driving shaft 8 is driven to rotate inside the electric drill 1, a second transmission gear 16 is arranged between the driving shaft 8 and the electric drill 1, and the second transmission gear 16 is drivingly connected to the driving shaft 8, and then the driving shaft 8 is driven to rotate through the second transmission gear 16, and the other end of the driving shaft 8 is drivingly connected to the drill bit 3, a positioning sleeve 6 is arranged between the driving shaft 8 and the front box body 4, and the positioning sleeve 6 is transversely inserted into the front box body 4, and the driving shaft 8 passes through the positioning sleeve 6, a paddle 5 is arranged on one side of the positioning sleeve 6, and the driving shaft 8 passes through the paddle 5, and the paddle 5 rotates on the driving shaft 8, and the paddle 5 A first transmission gear 15 is rotatably provided on one side, and the first transmission gear 15 is sleeved on the driving shaft 8. The first transmission gear 15 and the second transmission gear 16 are parallel to and in contact with each other, and the first transmission gear 15 and the driving shaft 8 rotate coaxially, so that the first transmission gear 15 is angularly offset by the paddle 5, so that the first transmission wheel 15 and the second transmission gear 16 are meshed, and then the driving shaft 8 drives the drill bit 3 to rotate through the transmission between the first transmission wheel 15 and the second transmission gear 16, and finally the electric drill 1 is impacted by the rotating drill bit 3 and when the paddle 5 resets the angle of the first transmission gear 15, the first transmission gear 15 is disengaged from the second transmission gear 16, so that the teeth of the first transmission gear 15 and the teeth of the second transmission gear 16 abut against each other, so that the driving shaft 8 and the drill bit 3 stop rotating, and then the electric drill 1 stops running to prevent accidental injury to personnel.

[0021] A knob 2 is further provided between the electric drill 1 and the drill bit 3, and the knob 2 is mounted on one side of the outside of the electric drill 1, the knob 2 is rotated on one side of the outside of the electric drill 1, and the knob 2 is rotated outside the front box 4, the knob 2 is formed with a slot 7, and the slot 7 is located on one side of the inside of the knob 2, and one side of the paddle 5 is inserted into the slot 7, and then when the knob 2 is rotated on the electric drill 1, the paddle 5 is driven to swing, thereby driving the first transmission gear 15 to shift the angle, so as to facilitate the subsequent gear switching of the electric drill 1.

[0022] The front box body 4 is provided with a bracket 9, and the bracket 9 is laterally located at the side of the outside of the front box body 4. A glass bead 10 is provided on the top of the bracket 9, and the glass bead 10 contacts the side of the inside of the knob 2, and the other side of the inside of the knob 2 is formed with a first positioning groove 13 and a second positioning groove 14 that cooperate with the glass bead 10, so that when the wave bead 10 is fixed in the first positioning groove 13, the paddle 5 that drives the first transmission wheel 15 and the second transmission gear 16 to engage is limited and fixed, so that the driving shaft 8 can drive the drill bit 3 to rotate, and when the wave bead 10 is fixed in the second positioning groove 14, the paddle 5 that drives the first transmission wheel 15 and the second transmission gear 16 to separate is limited and fixed, so that the driving shaft 8 cannot drive the drill bit 3 to rotate, so that the knob 2 is limited and fixed when the gear is rotated and switched on the electric drill 1.

[0023] A pressure plate 12 is arranged between the front box body 4 and the electric drill 1, and the pressure plate 12 is vertically arranged at one side of the electric drill 1, and the other side of the pressure plate 12 is connected to the front box body 4, and the driving shaft 8 passes through the pressure plate 12, and through the connection and cooperation between the pressure plate 12 and the front box body 4, the axial rotation of the front box body 4 and the bracket 9 on the front box body 4 is restricted.

[0024] A light board 11 is arranged between the pressing plate 12 and the front box body 4, and the light board 11 is vertically located on one side of the electric drill 1, and the pressing plate 12 and the light board 11 are connected on both sides of the light board 11, so that the axial rotation of the light board 11 is limited by the cooperation between the pressing plate 12 and the front box body 4.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A gear switching structure for an electric drill, comprising an electric drill and a drill bit arranged on one side of the electric drill, characterized in that: A front box is arranged between the electric drill and the drill bit, and the front box is laterally located on one side of the electric drill. A driving shaft is laterally arranged inside the front box, and the driving shaft is driven to rotate inside the electric drill. A second transmission gear is arranged between the driving shaft and the electric drill, and the second transmission gear is drivingly connected to the driving shaft, and then the driving shaft is driven to rotate through the second transmission gear, and the other end of the driving shaft is drivingly connected to the drill bit. A positioning sleeve is arranged between the driving shaft and the front box, and the positioning sleeve is laterally inserted into the front box, and the driving shaft passes through the positioning sleeve. A paddle is arranged on one side of the positioning sleeve, and the driving shaft passes through the paddle, and the paddle rotates on the driving shaft. A first transmission gear is rotatably arranged on one side of the paddle, and the first transmission gear is sleeved on the driving shaft. The first transmission gear and the second transmission gear are parallel and in contact with each other, and the first transmission gear rotates coaxially with the driving shaft.

2. The gear switching structure of an electric drill according to claim 1, characterized in that: A knob is also provided between the electric drill and the drill bit, and the knob is mounted on one side of the outside of the electric drill, the knob is rotated on one side of the outside of the electric drill, and the knob is rotated outside the front box, the knob is formed with a slot, and the slot is located on one side of the inside of the knob, and one side of the pick is inserted into the slot.

3. The gear switching structure of an electric drill according to claim 2, characterized in that: The front box body is provided with a bracket, and the bracket is laterally located at the side of the outside of the front box body. A glass bead is provided on the top of the bracket, and the glass bead contacts the side of the inside of the knob, and the other side of the inside of the knob is formed with a first positioning groove and a second positioning groove that cooperate with the glass bead.

4. The gear switching structure of an electric drill according to claim 1, characterized in that: A pressing plate is arranged between the front box body and the electric drill, and the pressing plate is vertically arranged at one side of the electric drill, the other side of the pressing plate is connected to the front box body, and the driving shaft passes through the pressing plate.

5. The gear switching structure of an electric drill according to claim 4, characterized in that: A light board is arranged between the pressing plate and the front box body, and the light board is vertically located on one side of the electric drill, and the pressing plate and the light board are connected on both sides of the light board.

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