A driving mechanism for a motor-rotating brush holder

Abstract

The present invention discloses a drive mechanism for a motor-rotating brush holder, comprising a first connecting portion disposed on the rotating disk, a second connecting portion disposed on the fixed disk, and a first elastic connector connecting the first and second connecting portions. The drive mechanism for a motor-rotating brush holder provided by the present invention can achieve accurate positioning of the rotating brush holder, provide a good operating feel, and enhance the user experience.

Description

Technical Field

[0001] The invention relates to a motor, in particular to a motor rotating brush holder driving mechanism. Background Art

[0002] In the prior art, motors with rotatable brush plates often use a positioning mechanism acting in the circumferential direction to hold the brush plates in their terminal positions. The brush plates are locked in the circumferential direction by terminal stops and radial protrusions. Summary of the Invention

[0003] The present invention provides a driving mechanism for a rotating brush holder of a HALF-type housing electric tool, which can achieve accurate positioning of the rotating brush holder, provide a good operating feel, and enhance user experience.

[0004] To achieve the above objectives, the present invention provides a driving mechanism for a motor rotating brush holder, wherein the motor rotating brush holder includes a rotating disk and a fixed disk, and the driving mechanism of the rotating brush holder includes a first connecting part arranged on the rotating disk and a second connecting part arranged on the fixed disk, and also includes a first elastic connecting member connecting the first connecting part and the second connecting part.

[0005] According to one aspect of the present invention, the rotating disk has a neck that cooperates with the fixed disk, the first connecting portion is provided on the neck and protrudes axially; the second connecting portion is provided on the fixed disk and protrudes axially.

[0006] According to one aspect of the present invention, a switching knob is provided on the circumference of the rotating disk, and the switching knob is manipulated to control the rotation of the rotating disk. The rotating disk has a first working position and a second working position.

[0007] According to one aspect of the present invention, the elastic connecting member is in a compressed state.

[0008] According to one aspect of the present invention, when the rotating disk is located at the first working position or the second working position, a radial direction of the first connecting portion and a radial direction of the second connecting portion form a certain angle.

[0009] According to one aspect of the present invention, the angle is no greater than 90 degrees.

[0010] According to one aspect of the present invention, a third connection portion symmetrical to the first connection portion is provided on the neck, a fourth connection portion symmetrical to the second connection portion is provided on the fixed plate, and a second elastic connector is provided between the third connection portion and the fourth connection portion.

[0011] According to one aspect of the present invention, the neck portion is provided with at least one protrusion in the radial direction, and the protrusion can limit the axial movement of the fixing disk.

[0012] According to one aspect of the present invention, a mounting groove cooperating with the protrusion is provided on a side of the fixing plate close to the neck.

[0013] According to one aspect of the present invention, a switching slot is provided on the housing corresponding to the rotating disk, and the switching knob can move in the switching slot.

[0014] The specific technical solutions and beneficial effects of the present invention will be described in detail in the following specific embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 The figure is a schematic diagram of a driving mechanism of a motor rotating brush holder according to the present invention.

[0017] Figure 2 The figure is a schematic diagram of another embodiment of an elastic member in a driving mechanism of a motor-rotating brush holder according to the present invention.

[0018] Figure 3 This is a schematic diagram of a second embodiment of a driving mechanism for a motor-rotating brush holder according to the present invention.

[0019] Figure 4 This is a cross-sectional view taken along line AA of a second embodiment of a driving mechanism for a motor-rotating brush holder according to the present invention.

[0020] Figure 5 This is a schematic diagram of a third embodiment of a driving mechanism for a motor-rotating brush holder according to the present invention.

[0021] Figure 6 This is a BB cross-sectional view of a third embodiment of a driving mechanism of a motor-rotating brush holder according to the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the accompanying 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, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. 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.

[0023] Those skilled in the art will appreciate that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0024] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. For example, terms such as "upper," "lower," "front," and "rear" that indicate orientation or positional relationships are based solely on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the disclosure. They do not indicate or imply that the device or component referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be construed as limiting the disclosure.

[0025] like Figure 1 As shown, the present invention provides a drive mechanism for a motor-driven brush holder, wherein the motor-driven brush holder includes a rotating disk 9 and a fixed disk 3. A switching knob 7 is provided on the circumference of the rotating disk 9, and a switching slot 10 is located on a housing 11. The switching knob 7 is placed in the switching slot 10. An operator can rotate the rotating disk 9 by operating the switching knob 7, and the rotating disk 9 has a first working position and a second working position in a stable state.

[0026] A neck 8 with a smaller radial dimension is provided at the end of the rotating disk 9 away from the switching knob, and a first connecting portion 2 protruding along the axial direction and a protruding portion 5 protruding along the radial direction are provided on the neck. In this embodiment, preferably, a third connecting portion symmetrical to the first connecting portion 2 and another protruding portion symmetrical to the protruding portion 5 are also provided on the neck. In this embodiment, the protruding portion is preferably arranged below the first connecting portion and the third connecting portion to provide strong support to the connecting portion and facilitate processing.

[0027] The fixed disk 3 is provided with a mounting groove 6. The mounting groove 6 of the fixed disk 3 is matched with the protrusion 5 on the rotating disk 9 for installation, that is, the fixed disk 3 is installed on the neck 8 of the rotating disk 9 and is restricted in axial movement by the protrusion 5.

[0028] The fixed disk 3 is also provided with a second connecting portion 4 protruding along the axial direction. The second connecting portion 4 is arranged in the same direction as the first connecting portion 2, and a first elastic connecting member 1 is provided between the first connecting portion 2 and the second connecting portion 4. In this embodiment, preferably, the fixed disk 3 is also provided with a fourth connecting portion symmetrical to the second connecting portion 4, and a second elastic connecting member is provided between the third connecting portion and the fourth connecting portion.

[0029] The present invention provides a driving mechanism for a motor rotating brush holder, comprising a first connecting portion 2 provided on a rotating disk and a second connecting portion 4 provided on a fixed disk, and further comprising a first elastic connecting member 1 connecting the first connecting portion 2 and the second connecting portion 4 .

[0030] The fixed disk 3 is coaxially mounted on the rotating disk 9. When the switching knob 7 is operated to drive the rotating disk 9 to the first working position or the second working position, the radial direction of the first connecting portion 2 forms a certain angle with the radial direction of the second connecting portion 4, and the radial direction of the third connecting portion forms the same angle with the radial direction of the fourth connecting portion. In this embodiment, the angle is preferably set to be no greater than 90 degrees. When in the first working position or the second working position, the first and second elastic connecting members are in a compressed state, and the first elastic member and the second elastic member, such as Figure 1 and Figure 2 As shown, this can be a torsion spring or a conventional spring 12. When the drive disc switches between two operating positions, once the disc's position exceeds the midpoint (i.e., the radial direction of the first connection portion overlaps the radial direction of the second connection portion), the resistance of the drive component becomes a thrust. At this point, even if the external operating force is removed, the disc can still reach the other operating position under the drive of the drive component. This feature provides the operator with a smooth and efficient operation. Due to the drive structure, when the external operating force is removed, the disc cannot remain at any position between the first and second operating positions, thus ensuring the correct operation of the motor.

[0031] like Figure 3 and Figure 4 In principle, the same reference numerals are used to denote substantially the same components. In addition, the same features and functions can be found in the second embodiment of the present invention. Figure 1 The description of the first embodiment in the present invention only focuses on the differences from the first embodiment.

[0032] The motor-operated brush holder in the second embodiment includes a rotating disk 14 and a fixed disk 3. A first groove serving as a first connecting portion is provided on the front end surface of the rotating disk 14. Similarly, a third groove is provided on the front end surface of the rotating disk 14, symmetrically with the first groove. A second groove serving as a second connecting portion is provided on the front end surface of the fixed disk 3, on the same side as the first groove on the rotating disk 14. Similarly, a fourth groove is provided on the front end surface of the fixed disk 3, symmetrically with the second groove. A first elastic member 13 is connected between the first and second grooves, and a second elastic member is connected between the third and fourth grooves.

[0033] The fixed disk 3 is coaxially mounted on the rotating disk 14. When the switching knob 7 is operated to drive the rotating disk 14 to the first working position or the second working position, the radial direction of the first groove forms a certain angle with the radial direction of the second groove, and the radial direction of the third groove forms the same angle with the radial direction of the fourth groove. In this embodiment, the angle is preferably set to no greater than 90 degrees. In addition, when in the first working position or the second working position, the first and second elastic connectors are in a compressed state. When the rotating disk is driven to switch between the two working positions, after the position of the rotating disk exceeds the midpoint (i.e., the radial direction of the first groove overlaps the radial direction of the second groove), the resistance of the driving component becomes a thrust. At this time, even if the external operating force is removed, the rotating disk can reach the other working position under the drive of the driving component.

[0034] like Figure 5 and Figure 6 The third embodiment of the present invention is shown in FIG. 1 . In principle, the same reference numerals are used to denote substantially the same components. In addition, the same features and functions can be referred to in the Figure 1 The description of the first embodiment in the present invention only focuses on the differences from the first embodiment.

[0035] The motor-operated brush holder in the third embodiment includes a rotating disk 14 and a fixed disk 3. A first groove serving as a first connecting portion is provided on the front end surface of the rotating disk 14. Similarly, a third groove is provided on the front end surface of the rotating disk 14, symmetrically with the first groove. A second groove serving as a second connecting portion is provided on the rear end surface of the fixed disk 3, opposite the first groove on the rotating disk 14. Similarly, a fourth groove is provided on the rear end surface of the fixed disk 3, symmetrically with the second groove. A first elastic member 15 is connected between the first and second grooves, and a second elastic member is connected between the third and fourth grooves.

[0036] The fixed disk 3 is coaxially mounted on the rotating disk 14. When the switching knob 7 is operated to drive the rotating disk 14 to the first working position or the second working position, the radial direction of the first groove forms a certain angle with the radial direction of the second groove, and the radial direction of the third groove forms the same angle with the radial direction of the fourth groove. In this embodiment, the angle is preferably set to no greater than 90 degrees. In addition, when in the first working position or the second working position, the first and second elastic connectors are in a compressed state. When the rotating disk is driven to switch between the two working positions, after the position of the rotating disk exceeds the midpoint (i.e., the radial direction of the first groove overlaps the radial direction of the second groove), the resistance of the driving component becomes a thrust. At this time, even if the external operating force is removed, the rotating disk can reach the other working position under the drive of the driving component.

[0037] Therefore, the driving mechanism of the motor rotating brush holder provided by the present invention can achieve accurate positioning of the rotating brush holder, provide a good operating feel, and enhance the user experience.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the above specific embodiment. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A drive mechanism for a motor-rotating brush holder, wherein: The motor rotating brush holder includes a rotating disk and a fixed disk, and is characterized in that: it includes a first connecting part arranged on the rotating disk and a second connecting part arranged on the fixed disk, and also includes a first elastic connecting part connecting the first connecting part and the second connecting part; the rotating disk has a neck that cooperates with the fixed disk, the first connecting part is arranged on the neck and protrudes axially; the second connecting part is arranged on the fixed disk and protrudes axially; a switching knob is provided on the circumference of the rotating disk, and the switching knob is operated to control the rotation of the rotating disk, and the rotating disk has a first working position and a second working position.

2. The driving mechanism of the motor-rotating brush holder according to claim 1, characterized in that: The elastic connecting member is in a compressed state.

3. The driving mechanism of the motor-rotating brush holder according to claim 2, characterized in that: When the rotating disk is located at the first working position or the second working position, a radial direction of the first connecting portion and a radial direction of the second connecting portion form a certain angle.

4. The driving mechanism of the motor-rotating brush holder according to claim 3, characterized in that: The angle is no greater than 90 degrees.

5. The driving mechanism of the motor-rotating brush holder according to claim 4, characterized in that: The neck is provided with a third connection portion symmetrical to the first connection portion, the fixed plate is provided with a fourth connection portion symmetrical to the second connection portion, and a second elastic connecting member is provided between the third connection portion and the fourth connection portion.

6. The driving mechanism of the motor-rotating brush holder according to claim 1, characterized in that: The neck portion is provided with at least one protrusion in the radial direction, and the protrusion can limit the axial movement of the fixing disk.

7. The driving mechanism of the motor-rotating brush holder according to claim 6, characterized in that: A mounting groove matched with the protrusion is provided on one side of the fixing plate close to the neck.

8. The driving mechanism of the motor-rotating brush holder according to claim 1, characterized in that: A switching slot is provided on the housing corresponding to the rotating disk, and the switching knob can move in the switching slot.

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