Driving main machine of disposable power tool

Abstract

The utility model relates to the technical field of main machines of power tools, and discloses a driving main machine of a disposable power tool, which comprises a main body shell, a supporting rib plate is fixedly connected to the inner wall of the main body shell, a motor is fixedly connected to the outer wall of the supporting rib plate, and a shaft is fixedly connected to the output end of the motor. A bearing seat is arranged in the main body shell, a supporting sleeve is arranged in the main body shell, an anti-rotating ring is arranged in the main body shell, a second shaft is arranged on the outer wall of the first shaft, and a first bearing is fixedly connected to the outer wall of the second shaft. When the motor is started, the first shaft rotates, power is transmitted through the second shaft, rotation of the second shaft is limited by the anti-rotation ring, it is ensured that a tool works within the safe operation range, the problems that the internal process of a driving main machine is complex in installation and not easy to position are solved, convenience of assembly and maintenance is achieved, installation is convenient, and the service life of the tool is prolonged. And the effects of positioning and limiting functions can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a power tool host, in particular to a driving host of a disposable power tool. Background Art

[0002] The drive unit of a disposable power tool is a motor assembly specifically designed for handheld power tools. It usually includes a motor, transmission system and other related components to provide power and motion to the working end of the tool so that it can be integrated into the internal space of the tool while providing sufficient power and durability to adapt to a variety of construction and maintenance work. The performance and reliability of the drive unit have an important impact on the overall performance of the tool.

[0003] In the drive mainframe of a traditional disposable power tool, disassembly and assembly of components such as a support sleeve and an anti-rotation ring often requires the use of special tools, such as a screwdriver or a wrench, to tighten the screws that secure these components one by one. This disassembly and assembly method may involve cumbersome steps, and since the screws may be relatively hidden or close, positioning and operation are more difficult. This design may increase the difficulty and time of maintenance, especially during on-site operations, which may reduce work efficiency due to the need to carry and frequently replace multiple special tools. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a driving main unit of a disposable power tool, aiming to improve the problem that the internal process and installation of the driving main unit are complicated and difficult to locate.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a driving main body of a disposable power tool comprises a main body shell, the inner wall of the main body shell is fixedly connected with a supporting rib plate, the outer wall of the supporting rib plate is fixedly connected with a motor, the output end of the motor is fixedly connected with a shaft, a bearing seat is arranged inside the main body shell, a supporting sleeve is arranged inside the main body shell, an anti-rotation ring is arranged inside the main body shell, two shafts are arranged on the outer wall of the one shaft, the outer walls of the two shafts are fixedly connected with bearing 1, the outer wall of the bearing 1 is arranged on the inner wall of the bearing seat, the outer walls of the two shafts are rotatably connected to the inside of the anti-rotation ring, a limiting shaft is arranged inside the anti-rotation ring, a cylindrical pin is arranged inside the anti-rotation ring, the inner thread of the bearing seat is connected with screw 1, the inner thread of the support sleeve is connected with screw 2, the outer wall of the screw 2 is threadedly connected to the inside of the bearing seat, and a protective component is arranged on the outer wall of the main body shell.

[0006] Furthermore, the protection assembly includes a lower shell and an upper shell, the outer wall of the lower shell is fixedly connected to the outer wall of the main shell, and the outer wall of the upper shell is fixedly connected to the outer wall of the lower shell.

[0007] Furthermore, a bottom cover is disposed on the lower surface of the upper shell, and a battery pack is disposed on the inner wall of the upper shell.

[0008] Furthermore, the battery pack is engaged with the bottom cover, and a switch button is slidably connected to the interior of the lower shell.

[0009] Furthermore, a steel ball 1 is arranged inside the support sleeve, and an active sliding sleeve is slidably connected to the outer wall of the support sleeve.

[0010] Furthermore, a spring 1 is sleeved on the outer wall of the supporting sleeve, and one end of the spring 1 is fixedly connected to the inner wall of the active sliding sleeve.

[0011] Furthermore, the other end of the spring 1 is fixedly connected to a limited position fixing sleeve.

[0012] Furthermore, the limiting fixing sleeve is arranged on the inner wall of the main body shell.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, when the motor is started, one shaft rotates and transmits power through the second shaft. The rotation of the second shaft is limited by the anti-rotation ring to ensure that the tool works within a safe operating range. The bearing seat and the support sleeve are fixed by screws one and two. The outer wall of the screw two is threadedly connected to the inside of the bearing seat. Such a structure helps to fix and stabilize various components, solves the problem of complex process installation and difficult positioning of the internal process of the drive host, achieves convenience in assembly and maintenance, is convenient for installation, and can achieve the effect of positioning and limiting functions.

[0015] 2. In the utility model, the release and fixation of the steel ball 1 are controlled by sliding the active sleeve. When the active sleeve is released, the active sleeve can be automatically pushed to the original position by the spring 1, and the steel ball 1 can be re-fixed. Then, the disassembly and assembly are realized by the steel ball 1, and the locking function of the quick-change joint is achieved to prevent it from being stuck during locking, resulting in an unsmooth locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the drive host of the disposable power tool proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the main body shell of the drive host of the disposable power tool proposed by the utility model;

[0018] Figure 3 This is a cross-sectional schematic diagram of a support sleeve of a drive main unit of a disposable power tool proposed in the utility model;

[0019] Figure 4The present invention is a schematic diagram of the structure of a bearing of a driving main unit of a disposable power tool.

[0020] Legend:

[0021] 1. Main shell; 2. Bottom cover; 3. Battery pack; 4. Switch button; 5. Lower shell; 6. Upper shell; 7. Support sleeve; 8. Active sleeve; 9. Steel ball one; 10. Spring one; 11. Limit fixing sleeve; 12. Anti-rotation ring; 13. Bearing one; 14. Second shaft; 15. Bearing seat; 16. First shaft; 17. Motor; 18. Support rib plate; 19. Screw one; 20. Limit shaft; 21. Cylindrical pin; 22. Screw two. DETAILED DESCRIPTION

[0022] 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.

[0023] Reference Figure 1 and Figure 3-4 , an embodiment provided by the utility model: a driving host of a disposable power tool, comprising a main body shell 1, the inner wall of the main body shell 1 is fixedly connected with a support rib 18, the outer wall of the support rib 18 is fixedly connected with a motor 17, the output end of the motor 17 is fixedly connected with a shaft 16, a bearing seat 15 is arranged inside the main body shell 1, a support sleeve 7 is arranged inside the main body shell 1, an anti-rotation ring 12 is arranged inside the main body shell 1, two shafts 14 are arranged on the outer wall of the first shaft 16, the outer wall of the second shaft 14 is fixedly connected with a bearing 13, the outer wall of the bearing 13 is arranged on the inner wall of the bearing seat 15, the outer wall of the two shafts 14 is rotatably connected to the inside of the anti-rotation ring 12, a limited position shaft 20 is arranged inside the anti-rotation ring 12, a cylindrical pin 21 is arranged inside the anti-rotation ring 12, the inner thread of the bearing seat 15 is connected with a screw 19, the inner thread of the support sleeve 7 is connected with a screw 22, the outer wall of the screw 22 is threadedly connected to the inside of the bearing seat 15, and the outer wall of the main body shell 1 is provided with a protective component;

[0024] Specifically, when the motor 17 is started, the internal rotor begins to rotate, and this rotation is transmitted to the second shaft 14 through the first shaft 16. The power transmission between the first shaft 16 and the second shaft 14 ensures the operation of the tool. In order to prevent the tool from rotating uncontrollably during operation, an anti-rotation ring 12 is designed. The function of the anti-rotation ring 12 is to limit the rotation angle of the second shaft 14, ensure that the tool works within a safe operating range, and prevent damage or injury caused by excessive rotation. In terms of the connection between the bearing seat 15 and the support sleeve 7, fixation is achieved by screws 19 and screws 22. The outer wall thread of screw 22 corresponds to the internal thread of the bearing seat 15. This threaded connection method can provide a strong fixing force to ensure the stability of the bearing seat 15 and the support sleeve 7 during the operation of the tool. This structural design not only helps to fix and stabilize the various components, but also helps to improve the reliability and durability of the entire drive system.

[0025] Reference Figure 1 The protection component includes a lower shell 5 and an upper shell 6. The outer wall of the lower shell 5 is fixedly connected to the outer wall of the main shell 1, the outer wall of the upper shell 6 is fixedly connected to the outer wall of the lower shell 5, the lower surface of the upper shell 6 is provided with a bottom cover 2, the inner wall of the upper shell 6 is provided with a battery pack 3, the battery pack 3 is meshed with the bottom cover 2, and the interior of the lower shell 5 is slidably connected with a switch button 4;

[0026] Specifically, the battery pack 3 can be confined inside the main body through the bottom cover 2, and the forward rotation, reverse rotation, neutral gear and stepless speed regulation of the device can be controlled through the switch button 4, thereby achieving the effect of convenient use.

[0027] Reference Figure 3-4 A steel ball 9 is arranged inside the support sleeve 7, an active sliding sleeve 8 is slidably connected to the outer wall of the support sleeve 7, a spring 10 is sleeved on the outer wall of the support sleeve 7, one end of the spring 10 is fixedly connected to the inner wall of the active sliding sleeve 8, the other end of the spring 10 is fixedly connected to the limited position fixing sleeve 11, and the limited position fixing sleeve 11 is arranged on the inner wall of the main shell 1;

[0028] Specifically, the user manually moves the active sleeve 8 to the right, and this action causes the spring 10 to be compressed. The compression of the spring 10 provides the necessary power for the steel ball 9, enabling it to move inside the support sleeve 7. When the steel ball 9 moves to a specific position between the support sleeve 7 and the active sleeve 8, it triggers the unlocking mechanism of the quick-change joint. The design of this mechanism allows the user to quickly and conveniently replace the joint part of the tool, thereby improving the flexibility and use efficiency of the tool. Once the steel ball 9 completes the unlocking function, the user can release the active sleeve 8. At this time, the spring 10 releases its stored spring force and pushes the active sleeve 8 to move to the left. This action drives the steel ball 9 to continue to move inside the support sleeve 7. When the steel ball 9 moves to a specific position between the support sleeve 7 and the active sleeve 8 again, it triggers the locking mechanism of the quick-change joint. This mechanism ensures the stability of the joint and the safety of the tool, and prevents the joint from accidentally falling off during work.

[0029] Working principle: when the drive host of the disposable power tool is needed, when the motor 17 is started, the first shaft 16 rotates and the power is transmitted through the second shaft 14. The rotation of the second shaft 14 is limited by the anti-rotation ring 12 to ensure that the tool works within a safe operating range. The bearing seat 15 and the support sleeve 7 are fixed by screws 19 and screws 22. The outer wall of the screw 22 is threadedly connected to the inside of the bearing seat 15. Such a structure helps to fix and stabilize the various components. The active sleeve 8 is manually moved to the right, the spring 10 is compressed, and the steel ball 9 passes through the support sleeve 7. When the steel ball 9 reaches between the support sleeve 7 and the active sleeve 8, the unlocking function of the quick-change joint is realized, and the active sleeve 8 is released. The spring 10 releases the spring force and pushes the active sleeve 8 to move to the left, so that the steel ball 9 passes through the support sleeve 7 in turn. When it reaches between the support sleeve 7 and the active sleeve 8, the locking function of the quick-change joint is realized. Finally, the switch button 4 is used to control the forward, reverse, neutral, and stepless speed regulation.

[0030] 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 substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drive main unit of a disposable power tool, comprising a main housing (1), characterized in that: The inner wall of the main housing (1) is fixedly connected to a supporting rib (18), the outer wall of the supporting rib (18) is fixedly connected to a motor (17), the output end of the motor (17) is fixedly connected to a shaft (16), a bearing seat (15) is arranged inside the main housing (1), a supporting sleeve (7) is arranged inside the main housing (1), an anti-rotation ring (12) is arranged inside the main housing (1), the outer wall of the shaft (16) is provided with a second shaft (14), the outer wall of the second shaft (14) is fixedly connected to a bearing 1 (13), and the bearing 1 (13) is fixedly connected to the outer wall of the second shaft (14). The outer wall of the second shaft (14) is arranged on the inner wall of the bearing seat (15), the outer wall of the second shaft (14) is rotatably connected to the inside of the anti-rotation ring (12), the inside of the anti-rotation ring (12) is provided with a limit shaft (20), the inside of the anti-rotation ring (12) is provided with a cylindrical pin (21), the inner thread of the bearing seat (15) is connected with a screw one (19), the inner thread of the support sleeve (7) is connected with a screw two (22), the outer wall of the screw two (22) is threadedly connected to the inside of the bearing seat (15), and the outer wall of the main shell (1) is provided with a protective component.

2. The drive main unit of the disposable power tool according to claim 1, characterized in that: The protection component comprises a lower shell (5) and an upper shell (6), the outer wall of the lower shell (5) being fixedly connected to the outer wall of the main shell (1), and the outer wall of the upper shell (6) being fixedly connected to the outer wall of the lower shell (5).

3. The drive main unit of the disposable power tool according to claim 2, characterized in that: The lower surface of the upper shell (6) is provided with a bottom cover (2), and the inner wall of the upper shell (6) is provided with a battery pack (3).

4. The drive main unit of the disposable power tool according to claim 3, characterized in that: The battery pack (3) is meshed with the bottom cover (2), and a switch button (4) is slidably connected inside the lower shell (5).

5. The drive main unit of the disposable power tool according to claim 1, characterized in that: A steel ball (9) is arranged inside the support sleeve (7), and an active sliding sleeve (8) is slidably connected to the outer wall of the support sleeve (7).

6. The drive main unit of the disposable power tool according to claim 5, characterized in that: A spring 1 (10) is sleeved on the outer wall of the supporting sleeve (7), and one end of the spring 1 (10) is fixedly connected to the inner wall of the active sliding sleeve (8).

7. The drive main unit of the disposable power tool according to claim 6, characterized in that: The other end of the spring 1 (10) is fixedly connected to a limited position fixing sleeve (11).

8. The drive main unit of the disposable power tool according to claim 7, characterized in that: The position limiting fixing sleeve (11) is arranged on the inner wall of the main body shell (1).

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