Electric tool

By introducing a switching mechanism into power tools, the dust collection fan can switch between states when dust collection is needed and when it is not needed, thus solving the problem of power loss when the dust collection fan is not in use and improving the power tool's battery life.

CN222308759UActive Publication Date: 2025-01-07POSITEC POWER TOOLS (SUZHOU) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420744200.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-11
Publication Date
2025-01-07
Estimated Expiration
2034-04-11

AI Technical Summary

Technical Problem

When the dust collection function is not in use, the rotation of the dust collection fan in existing power tools increases power consumption and affects battery life.

Method used

A switching mechanism is used to switch the dust collection fan between a first state and a second state. In the first state, the dust collection fan rotates in conjunction with the motor shaft, and in the second state, it disengages from the motor shaft, thus avoiding unnecessary power loss.

Benefits of technology

By designing a switching mechanism, the load on the motor shaft is reduced when the dust collection function is not required, thereby improving the power tool's endurance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222308759U_ABST
    Figure CN222308759U_ABST
Patent Text Reader

Abstract

The utility model provides an electric tool, the electric tool comprises a machine shell, the machine shell is internally provided with a motor used for providing driving force, and the motor comprises a motor shaft; the electric tool further comprises a dust collection fan used for generating suction force for the dust collection device, and the dust collection fan is arranged on the motor shaft in a sleeving mode. The switching mechanism is operably switched between a first state and a second state, and when the switching mechanism is in the first state, the dust collection fan is connected with the motor shaft in a matched mode; and when the switching mechanism is in the second state, the dust collection fan is separated from the motor shaft. When the dust collection fan is not used, the electric energy loss of the dust collection fan is reduced, and the cruising ability of the electric tool is improved.
Need to check novelty before this filing date? Find Prior Art

Claims

1. An electric tool comprising: A casing, wherein the casing is provided with: A motor, used to provide driving force, the motor comprising a motor shaft; Characterized in that the electric tool also includes: A dust collecting fan, used to generate suction for the dust collecting device, the dust collecting fan being sleeved on the motor shaft; A switching mechanism, wherein the switching mechanism is operable to switch between a first state and a second state, when the switching mechanism is in the first state, the dust collecting fan is cooperatively connected with the motor shaft; when the switching mechanism is in the second state, the dust collecting fan is disengaged from the motor shaft.

2. The electric tool according to claim 1, characterized in that: The dust collecting fan is provided with a first connecting member, and the motor shaft is provided with a second connecting member; When the switching mechanism is in the first state, the first connecting member and the second connecting member are connected in a mating manner; when the switching mechanism is in the second state, the first connecting member and the second connecting member are disengaged from each other.

3. The electric tool according to claim 1, characterized in that: The switching mechanism includes a driving element, which is operably connected to the dust collecting fan and drives the dust collecting fan away from the motor shaft to switch the switching mechanism from the first state to the second state.

4. The electric tool according to claim 3, characterized in that: The driving element is operable to rotate to drive the dust collecting fan to axially disengage from the motor shaft.

5. The electric tool according to claim 4, characterized in that: The electric tool further comprises a bearing member fixedly connected to the dust collecting fan. When the switching mechanism switches between the first state and the second state, the driving element drives the dust collecting fan by driving the bearing member.

6. The electric tool according to claim 5, characterized in that: In the axial direction of the motor shaft, a gap is provided between the bearing member and the dust collecting fan, and the driving element is at least partially located in the gap.

7. The electric tool according to claim 5, characterized in that: The hardness of the bearing member is greater than the hardness of the dust collecting fan.

8. The electric tool according to claim 1, characterized in that: The switching mechanism further includes a restoring element, which can drive the dust collecting fan to cooperate with the motor shaft under the action of a restoring force, thereby switching the switching mechanism from the second state to the first state.

9. The electric tool according to claim 1, characterized in that: The electric tool further comprises: A cooling fan is used to generate airflow and cool the motor, and the cooling fan is cooperatively connected with the motor shaft.

10. The electric tool according to claim 9, characterized in that: The cooling fan is located inside the motor, or the cooling fan is located between the dust collecting fan and the motor.