Large-torque output shaft of electric tool

Abstract

The utility model discloses a large torque output shaft of an electric tool, which relates to the technical field of electric accessories and comprises an output shaft body and a motor shaft, the output shaft body is arranged on one side of the motor shaft, and a first connecting disc is fixedly arranged at one end, close to the output shaft body, of the motor shaft. A second connecting disc is fixedly arranged on the side, close to the motor shaft, of the output shaft body, the first connecting disc abuts against the second connecting disc, two inserting rods are fixedly arranged on the side, close to the second connecting disc, of the first connecting disc, and inserting holes are formed in the positions, corresponding to the inserting rods, of the two ends of the second connecting disc. The two inserting rods are connected with the corresponding inserting holes in an inserted mode. A groove is formed in the side, close to the first connecting disc, of the second connecting disc, and through holes are formed in the positions, corresponding to the two inserting holes, of the two sides of the groove. The output shaft can be disassembled and assembled in a time-saving and labor-saving mode, and the output shaft can be conveniently, efficiently and conveniently replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tool accessories, in particular to a large torque output shaft of an electric tool. Background Art

[0002] Power tools are mainly divided into metal cutting power tools, grinding power tools, assembly power tools and railway power tools. Common power tools include electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, electric planers, etc.

[0003] The high-torque output shaft of a traditional power tool and the rotating shaft of the power tool motor are usually connected and fixed using a flange and a large number of bolts. When the output shaft needs to be disassembled and replaced, cumbersome disassembly steps are required, which is very time-consuming and labor-intensive. Utility Model Content

[0004] In view of the above problems existing in the large torque output shaft of the existing electric tool, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a high-torque output shaft for an electric tool, which solves the problem in the prior art that the high-torque output shaft of the electric tool and the rotating shaft of the electric tool motor are usually connected and fixed by flanges and a large number of bolts. When the output shaft needs to be disassembled and replaced, cumbersome disassembly steps are required, which is very time-consuming and labor-intensive.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A large torque output shaft of an electric tool comprises an output shaft body and a motor shaft, wherein the output shaft body is arranged on one side of the motor shaft, a first connection disk is fixedly arranged on one end of the motor shaft close to the output shaft body, a second connection disk is fixedly arranged on one side of the output shaft body close to the motor shaft, the first connection disk and the second connection disk are arranged against each other, two plug rods are fixedly arranged on one side of the first connection disk close to the second connection disk, plug holes are opened at both ends of the second connection disk and at positions corresponding to the plug rods, and the two plug rods are plugged into the corresponding plug holes;

[0008] A groove is provided on one side of the second connection disk close to the first connection disk, through holes are provided on both sides of the groove and at positions corresponding to the two insertion holes, and limit rods are slidably provided inside the two through holes, and a limit hole is provided on the rod wall of the insertion rod, and one end of the limit rod is plugged into the corresponding limit hole;

[0009] A pushing mechanism for driving the two limiting rods to move is arranged inside the groove.

[0010] Preferably, the pushing mechanism includes a push plate and a push rod, the push plate is slidably arranged inside the groove, the two push rods are arranged at both ends of the push rod and are located on the side close to the limit rod, both ends of the two push rods are rotatably provided with connecting blocks through axle pins, and the multiple connecting blocks are respectively fixedly connected to the two ends of the corresponding push plates and the end of the limit rod away from the insertion rod, an inspection hole is opened in the middle of the output shaft body, and cavities are opened at both ends of the groove on the side away from the second connecting disk, and a reset mechanism for driving the push plate to reset is arranged inside the cavity.

[0011] Preferably, the reset mechanism includes a block and a spring, the block is slidably arranged inside the cavity, a connecting rod is fixedly arranged on the side of the block close to the push plate, one end of the connecting rod extends to the inside of the groove and is fixedly connected to the push plate, the spring is movably sleeved on the rod wall of the connecting rod, and the two ends of the spring are respectively fixedly connected to the corresponding side of the block close to the connecting rod and the inner wall of the cavity.

[0012] Preferably, the push plate and the cavity have rectangular cross-sections.

[0013] Preferably, the cross section of the limiting rod is square.

[0014] Preferably, the first connecting disk is connected to the motor shaft by welding.

[0015] Preferably, the output shaft body and the second connecting disk are integrally formed.

[0016] Preferably, rubber gaskets are fixedly provided on the adjacent sides of the first connecting plate and the second connecting plate.

[0017] Preferably, a limiting hole is provided on the rod wall at one end of the output shaft body away from the second connecting disk.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] The utility model uses a rod to push a push plate so that the push plate pushes the two push rods toward verticality, that is, the upper ends of the two limit rods are located outside the insertion holes, and then the first connecting plate and the second connecting plate are in conflict with each other, so that the insertion rod is inserted into the insertion hole. At this time, the rod is pulled out, and the spring pushes the stopper to reset, that is, the push plate is reset, so that the two push rods are rotated to an inclined state again, and the limit rods are pushed into the corresponding insertion holes until the two ends of the limit rods are plugged into the corresponding limit holes, thus completing the efficient installation of the output shaft body and the motor shaft. The output shaft body can be quickly disassembled and replaced by reversing the above steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a schematic structural diagram of a high torque output shaft of an electric tool proposed by the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0023] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A in the middle.

[0024] Description of reference numerals:

[0025] 1. Motor shaft; 2. First connecting plate; 3. Output shaft body; 4. Second connecting plate; 5. Inspection hole; 6. Limit rod; 7. Insert rod; 8. Push plate; 9. Push rod; 10. Axle pin; 11. Connecting block; 12. Stop block; 13. Connecting rod; 14. Spring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The utility model embodiment discloses a high torque output shaft of an electric tool.

[0028] Embodiment 1

[0029] Reference Figure 1-3 The high torque output shaft of the electric tool comprises an output shaft body 3 and a motor shaft 1, wherein the output shaft body 3 is arranged on one side of the motor shaft 1, a first connecting disk 2 is fixedly arranged on one end of the motor shaft 1 close to the output shaft body 3, a second connecting disk 4 is fixedly arranged on one side of the output shaft body 3 close to the motor shaft 1, the first connecting disk 2 and the second connecting disk 4 are arranged against each other, two plug rods 7 are fixedly arranged on one side of the first connecting disk 2 close to the second connecting disk 4, and plug holes are opened at both ends of the second connecting disk 4 and at positions corresponding to the plug rods 7, and the two plug rods 7 are plugged into the corresponding plug holes;

[0030] Reference Figure 1-3A groove is provided on one side of the second connection disk 4 close to the first connection disk 2, through holes are provided on both sides of the groove and at positions corresponding to the two plug holes, and limit rods 6 are slidably provided inside the two through holes, and a limit hole is provided on the rod wall of the plug rod 7, and one end of the limit rod 6 is plugged into the corresponding limit hole, and the cross section of the limit rod 6 is square, so that the limit rod 6 cannot rotate, that is, it can slide stably;

[0031] Reference Figure 1-3 The first connecting disk 2 and the motor shaft 1 are connected by welding to improve the connection strength between the first connecting disk 2 and the motor shaft 1. The output shaft body 3 and the second connecting disk 4 are made by integral molding to improve the connection strength between the output shaft body 3 and the second connecting disk 4. Rubber washers are fixedly provided on the side close to the first connecting disk 2 and the second connecting disk 4 to improve the stability of the connection between the first connecting disk 2 and the second connecting disk 4. A limiting hole is provided on the rod wall at one end of the output shaft body 3 away from the second connecting disk 4 to facilitate the installation of tools.

[0032] Embodiment 2

[0033] Reference Figure 1-3 A pushing mechanism for driving the two limit rods 6 to move is arranged inside the groove, and the pushing mechanism includes a push plate 8 and a push rod 9. The push plate 8 is slidably arranged inside the groove. The cross-sections of the push plate 8 and the cavity are both rectangular, so that the push plate 8 cannot rotate, that is, it can slide stably. The two push rods 9 are arranged at both ends of the push rod 9 and are located on the side close to the limit rod 6. Both ends of the two push rods 9 are rotatably provided with connecting blocks 11 through axle pins 10. The multiple connecting blocks 11 are respectively fixedly connected to the two ends of the corresponding push plates 8 and the end of the limit rod 6 away from the insertion rod 7. An inspection hole 5 is opened in the middle of the output shaft body 3.

[0034] Embodiment 3

[0035] Reference Figure 1-3 The groove is provided with cavities at both ends of the side away from the second connecting disk 4, and a reset mechanism for driving the push plate 8 to reset is arranged inside the cavity. The reset mechanism includes a stopper 12 and a spring 14. The stopper 12 is slidably arranged inside the cavity, and a connecting rod 13 is fixedly arranged on the side of the stopper 12 close to the push plate 8. One end of the connecting rod 13 extends to the inside of the groove and is fixedly connected to the push plate 8. The spring 14 is movably sleeved on the rod wall of the connecting rod 13, and the two ends of the spring 14 are respectively fixedly connected to the corresponding side of the stopper 12 close to the connecting rod 13 and the inner wall of the cavity.

[0036] In the utility model, when in use, the rod is used to push the push plate 8, so that the push plate 8 pushes the two push rods 9 toward verticality, that is, the upper ends of the two limit rods 6 are located outside the insertion hole, and then the first connecting plate 2 and the second connecting plate 4 are in conflict, so that the insertion rod 7 is inserted into the insertion hole. At this time, the rod is pulled out, and the spring 14 pushes the stopper 12 to reset, that is, the push plate 8 is reset, so that the two push rods 9 are rotated to an inclined state again, that is, the limit rod 6 will be pushed into the corresponding insertion hole until the two ends of the limit rod 6 are plugged into the corresponding limit holes, that is, the efficient installation of the output shaft body 3 and the motor shaft 1 is completed, and the output shaft body 1 can be quickly disassembled and replaced by reversing the above steps.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high torque output shaft for an electric tool, comprising an output shaft body (3) and a motor shaft (1), characterized in that: The output shaft body (3) is arranged on one side of the motor shaft (1); a first connecting disk (2) is fixedly arranged on one end of the motor shaft (1) close to the output shaft body (3); a second connecting disk (4) is fixedly arranged on one side of the output shaft body (3) close to the motor shaft (1); the first connecting disk (2) and the second connecting disk (4) are arranged to abut against each other; two plug rods (7) are fixedly arranged on one side of the first connecting disk (2) close to the second connecting disk (4); plug holes are provided at both ends of the second connecting disk (4) and at positions corresponding to the plug rods (7); the two plug rods (7) are plugged into the corresponding plug holes; A groove is provided on one side of the second connection disk (4) close to the first connection disk (2), through holes are provided on both sides of the groove and at positions corresponding to the two insertion holes, limiting rods (6) are slidably arranged inside the two through holes, a limiting hole is provided on the rod wall of the insertion rod (7), and one end of the limiting rod (6) is plugged into the corresponding limiting hole; A pushing mechanism for driving the two limiting rods (6) to move is arranged inside the groove.

2. The high torque output shaft of the electric tool according to claim 1, characterized in that: The pushing mechanism comprises a push plate (8) and a push rod (9), wherein the push plate (8) is slidably arranged inside the groove, and the two push rods (9) are arranged at both ends of the push rod (9) and are located on a side close to the limiting rod (6), and both ends of the two push rods (9) are rotatably provided with connecting blocks (11) through an axle pin (10), and the plurality of connecting blocks (11) are respectively fixedly connected to the two ends of the corresponding push plate (8) and one end of the limiting rod (6) away from the insertion rod (7), and an inspection hole (5) is provided in the middle of the output shaft body (3), and cavities are provided at both ends of the side of the groove away from the second connecting plate (4), and a reset mechanism for driving the push plate (8) to reset is provided inside the cavity.

3. The high torque output shaft of the electric tool according to claim 2, characterized in that: The reset mechanism comprises a stopper (12) and a spring (14); the stopper (12) is slidably arranged inside the cavity; a connecting rod (13) is fixedly arranged on a side of the stopper (12) close to the push plate (8); one end of the connecting rod (13) extends into the interior of the groove and is fixedly connected to the push plate (8); the spring (14) is movably sleeved on a rod wall of the connecting rod (13); and two ends of the spring (14) are respectively fixedly connected to a side of the corresponding stopper (12) close to the connecting rod (13) and an inner wall of the cavity.

4. The high torque output shaft of the electric tool according to claim 2, characterized in that: The push plate (8) and the cavity both have rectangular cross sections.

5. The high torque output shaft of the electric tool according to claim 1, characterized in that: The cross section of the limiting rod (6) is square.

6. The high torque output shaft of the electric tool according to claim 1, characterized in that: The first connecting plate (2) and the motor shaft (1) are connected by welding.

7. The high torque output shaft of the electric tool according to claim 1, characterized in that: The output shaft body (3) and the second connecting disk (4) are integrally formed and manufactured.

8. The high torque output shaft of the electric tool according to claim 1, characterized in that: A rubber gasket is fixedly provided on one side of the first connection plate (2) and the second connection plate (4) close to each other.

9. The high torque output shaft of the electric tool according to claim 1, characterized in that: A limiting hole is provided on a rod wall at one end of the output shaft body (3) away from the second connecting disk (4).

Images