CN118199322B - A driving motor with multiple output directions - Google Patents

Abstract

The invention discloses a driving motor with multiple output directions, which comprises a driving shell, wherein one end of the driving shell is provided with a rotating motor and a rotating shaft, the output end of the rotating motor is in transmission connection with a first eccentric shaft, one end of the rotating shaft, which is close to the rotating motor, is provided with a second eccentric shaft, the maximum eccentric distance of the first eccentric shaft is smaller than that of the second eccentric shaft, a connecting rod is arranged between the first eccentric shaft and the second eccentric shaft, and two ends of the connecting rod are hinged with the first eccentric shaft and the second eccentric shaft; the sliding frame is movably sleeved on the peripheral wall of the rotating shaft, the sliding frame is hinged with a sliding sleeve, the outer wall of the sliding sleeve is provided with two balancing weights which are symmetrical in center, an elastic rod is arranged in the sliding sleeve in a sliding manner, the other end of the driving shell is rotatably provided with a rotating ring and is movably provided with an output rotor, one end of the elastic rod is hinged with the inner wall of the rotating ring, and the other end of the elastic rod is hinged with the inner wall of the output rotor; the invention can realize the characteristic of multiple output directions by adopting one motor, reduces the control difficulty and is beneficial to reducing the volume and the quality of products.

Description

A driving motor with multiple output directions

Technical Field

The present invention relates to the technical field of drive devices, and in particular to a drive motor with multiple output directions.

Background technique

During operation, an electric toothbrush needs a motor to drive the brush head to reciprocate along the axial direction and perform reciprocating rotational motion at the same time, which requires the motor to have the characteristics of multiple output directions.

The prior art generally achieves the above functions by providing two coaxially mounted motors. This approach increases the difficulty of control on the one hand, and also increases the mass and volume of the entire drive unit on the other hand, making the electric toothbrush bulky.

Summary of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a driving motor with multiple output directions, so that the characteristics of multiple output directions can be realized by using one motor, the control difficulty can be reduced, and the volume and weight of the product can be reduced.

To achieve the above object, the specific scheme of the present invention is as follows:

A driving motor with multiple output directions comprises a driving housing, a rotating motor and a rotating shaft are arranged at one end of the driving housing, a first eccentric shaft is drivingly connected to the output end of the rotating motor, a second eccentric shaft is arranged at one end of the rotating shaft close to the rotating motor, a maximum eccentricity of the first eccentric shaft is smaller than an eccentricity of the second eccentric shaft, a connecting rod is arranged between the first eccentric shaft and the second eccentric shaft, one end of the connecting rod is hinged to the first eccentric shaft, and the other end of the connecting rod is hinged to the second eccentric shaft;

A sliding frame is movably sleeved on the outer peripheral wall of the rotating shaft, and the sliding frame can rotate with the rotating shaft and slide relative to the rotating shaft. The sliding frame is hinged with a sliding sleeve, and two centrally symmetrical counterweights are arranged on the outer wall of the sliding sleeve. An elastic rod is slidably penetrated in the sliding sleeve, and a rotating ring and an output rotor are movably arranged at the other end of the driving shell, and the output rotor can rotate and slide relative to the driving shell, one end of the elastic rod is hinged to the inner wall of the rotating ring, and the other end of the elastic rod is hinged to the inner wall of the output rotor.

Optionally, the output end of the rotating motor is connected to a first gear, the first gear is meshed with a second gear, the diameter of the second gear is larger than the diameter of the first gear, a sliding groove is radially provided on the tooth surface of the second gear, a slider is slidingly connected in the sliding groove, a spring is connected between the inner end of the slider and the groove wall of the sliding groove, and the first eccentric shaft is arranged at the outer end of the slider.

Optionally, a connecting seat is provided at one end of the driving housing, the rotating motor is provided on a side of the connecting seat away from the driving housing, and the second gear is rotatably provided on a side of the connecting seat away from the driving housing.

Optionally, the connecting seat is provided with a slot, which includes an inner ring groove and an outer ring groove, and the inner ring groove and the outer ring groove are connected by an inclined groove; the sliding block is convexly provided with a bayonet, which moves through the side of the second gear facing away from the second eccentric shaft and then moves into the slot.

Optionally, the elastic rod includes a first rod body and a second rod body, one end of the first rod body is hinged on the inner wall of the rotating ring, one end of the second rod body is slidably inserted into the other end of the first rod body, the other end of the second rod body is hinged on the inner wall of the output rotor, and a tension spring is connected between one end of the second rod body and the other end of the second rod body.

Optionally, the outer peripheral wall of the rotating shaft is provided with a first profile structure, the sliding frame is provided with a first profile hole, and the sliding frame is slidably sleeved on the first profile structure of the rotating shaft through the first profile hole.

Optionally, a sliding hole is provided at the other end of the connecting rod, and the second eccentric shaft is movably embedded in the sliding hole.

Optionally, the other end of the first rod body is provided with a second profile hole, the outer wall of one end of the second rod body is provided with a second profile structure, and the second profile structure slides and extends into the second profile hole.

The beneficial effects of the present invention are as follows: the present invention drives the output rotor to produce reciprocating linear motion by cooperating with the elastic rod and the counterweight block, utilizing the reciprocating swing of the rotating shaft and the sliding frame under the cooperation of the first eccentric shaft and the second eccentric shaft, thereby realizing the decomposition of the continuous rotational motion of the rotating motor, thereby being able to realize the characteristics of multiple output directions with one motor, reducing the control difficulty, and helping to reduce the volume and weight of the product.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional schematic diagram of the present invention when the output rotor is retracted;

FIG2 is a cross-sectional schematic diagram of the present invention when the output rotor is extended;

Fig. 3 is a partial structural schematic diagram of the present invention;

4 is a cross-sectional schematic diagram of the cooperation between the slider, the second gear and the spring of the present invention;

5 is a cross-sectional schematic diagram of the cooperation between the sliding frame, the rotating shaft and the connecting rod of the present invention;

FIG6 is a schematic structural diagram of a connecting socket according to the present invention;

Explanation of the reference numerals in the accompanying drawings: 1. driving housing; 2. rotating motor; 3. rotating shaft; 31. second eccentric shaft; 4. connecting rod; 41. sliding hole; 5. sliding frame; 6. sliding sleeve; 7. counterweight; 81. first rod body; 82. second rod body; 83. tension spring; 9. rotating ring; 10. output rotor; 20. first gear; 30. second gear; 301. sliding groove; 40. sliding block; 401. first eccentric shaft; 402. bayonet pin; 50. spring; 60. connecting seat; 601. inner ring groove; 602. outer ring groove; 603. inclined groove.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the implementation scope of the present invention is not limited thereto.

As shown in FIGS. 1 to 6 , a driving motor with multiple output directions described in this embodiment is specifically applied to an electric toothbrush to drive the brush head to reciprocate axially and rotate reciprocatingly at the same time, thereby achieving an automatic brushing effect; the driving motor comprises a driving housing 1, one end of which is provided with a rotating motor 2 and a rotating shaft 3, the rotating motor 2 is used to provide continuous rotational motion, the output end of the rotating motor 2 is transmission-connected with a first eccentric shaft 401, the end of the rotating shaft 3 close to the rotating motor 2 is provided with a second eccentric shaft 31, the maximum eccentricity of the first eccentric shaft 401 is smaller than the eccentricity of the second eccentric shaft 31, a connecting rod 4 is provided between the first eccentric shaft 401 and the second eccentric shaft 31, one end of the connecting rod 4 is hinged to the first eccentric shaft 401, and the other end of the connecting rod 4 is hinged to the second eccentric shaft 31;

A sliding frame 5 is movably sleeved on the outer peripheral wall of the rotating shaft 3. The sliding frame 5 can rotate with the rotating shaft 3 and slide relative to the rotating shaft 3. The sliding frame 5 is hinged with a sliding sleeve 6. Two centrally symmetrical counterweights 7 are arranged on the outer wall of the sliding sleeve 6. An elastic rod is slidably penetrated in the sliding sleeve 6. A rotating ring 9 and an output rotor 10 are movably arranged on the other end of the driving housing 1. The output rotor 10 can rotate and slide relative to the driving housing 1. One end of the elastic rod is hinged to the inner wall of the rotating ring 9, and the other end of the elastic rod is hinged to the inner wall of the output rotor 10.

Specifically, when the driving motor described in this embodiment is actually used, the rotating motor 2 drives the first eccentric shaft 401 to rotate. Since the maximum eccentricity of the first eccentric shaft 401 is smaller than the eccentricity of the second eccentric shaft 31, the first eccentric shaft 401 drives the second eccentric shaft 31 to perform reciprocating oscillating motion through the connecting rod 4, and the second eccentric shaft 31 synchronously drives the sliding frame 5 to perform reciprocating oscillating motion. The sliding frame 5 drives the rotating ring 9 and the output rotor 10 to perform reciprocating oscillating motion synchronously through the sliding sleeve 6 and the elastic rod. Since the center of gravity of the counterweight block 7 is aligned with the axis of the sliding sleeve 6, the rotating ring 9 and the output rotor 10 are rotated to rotate. There is a force arm between the two, which generates a rotational torque on the sleeve 6 under the action of the centrifugal force exerted on the counterweight 7, thereby driving the sleeve 6 to rotate, and thus pushing the output rotor 10 outward through the elastic rod, as shown in Figure 2; when the shaft 3 rotates to the direction change point, the angular velocity decreases until it is zero, and the centrifugal force decreases accordingly. The elastic rod is reset under the action of the elastic force, driving the output rotor 10 to retract inward, as shown in Figure 1; this reciprocating process is repeated to decompose the continuous rotational motion of the rotating motor 2 into reciprocating linear motion along the axial direction and reciprocating swinging around the axis.

In this embodiment, the elastic rod and the counterweight 7 cooperate with each other, and the reciprocating swing of the rotating shaft 3 and the sliding frame 5 under the cooperation of the first eccentric shaft 401 and the second eccentric shaft 31 is used to drive the output rotor 10 to produce reciprocating linear motion, thereby realizing the decomposition of the continuous rotational motion of the rotating motor 2, so that the characteristics of multiple output directions can be realized by using one motor, reducing the control difficulty and facilitating the reduction of the volume and weight of the product.

As shown in Fig. 1 to Fig. 4, a driving motor with multiple output directions described in this embodiment, in some embodiments, the output end of the rotating motor 2 is connected with a first gear 20, the first gear 20 is meshed with a second gear 30, the diameter of the second gear 30 is larger than the diameter of the first gear 20, the tooth surface of the second gear 30 is radially provided with a slide groove 301, the slide groove 301 is slidably connected with a slider 40, a spring 50 is connected between the inner end of the slider 40 and the groove wall of the slide groove 301, and the first eccentric shaft 401 is arranged at the outer end of the slider 40. The second gear 30, the connecting rod 4 and the rotating shaft 3 of this embodiment constitute a rocker mechanism, thereby driving the output rotor 10 to swing back and forth through the sliding bracket.

In actual application, the slider 40 is close to the axial position of the second gear 30 under the elastic force of the spring 50. As the rotating motor 2 drives the first gear 20 to rotate, the first gear 20 drives the second gear 30 to rotate, and the second gear 30 drives the slider 40 to rotate, thereby driving the first eccentric shaft 401 to rotate, thereby transmitting the rotational motion to the second eccentric shaft 31. In this way, by utilizing the maximum eccentricity of the first eccentric shaft 401 being smaller than the eccentricity of the second eccentric shaft 31, the first eccentric shaft 401 drives the second eccentric shaft 31 to swing back and forth.

As shown in FIG. 1 and FIG. 2 , in some embodiments of a driving motor with multiple output directions described in this embodiment, a connection seat 60 is provided at one end of the driving housing 1, the rotating motor 2 is provided on a side of the connecting seat 60 away from the driving housing 1, and the second gear 30 is rotatably provided on a side of the connecting seat 60 away from the driving housing 1. In this embodiment, the connecting seat 60 is provided so that the rotating motor 2 can be installed on the driving housing 1, and the installation of the second gear 30 is also facilitated.

As shown in FIG6 , in a multi-output direction driving motor described in this embodiment, in some embodiments, the connecting seat 60 is provided with a slot, and the slot includes an inner ring groove 601 and an outer ring groove 602, and the inner ring groove 601 and the outer ring groove 602 are connected by an inclined groove 603; the slider 40 is provided with a protruding latch 402, and the latch 402 is movable through the side of the second gear 30 facing away from the second eccentric shaft 31 and then is movable into the slot.

Specifically, in the driving motor described in this embodiment, when the rotating motor 2 drives the first gear 20 to rotate clockwise, the bayonet 402 is located in the inner ring groove 601, and the slider 40 is located close to the axis of the second gear 30. At this time, the distance between the first eccentric shaft 401 and the second eccentric shaft 31 is small, and the eccentricity of the first eccentric shaft 401 is small, so that the reciprocating swing amplitude of the second eccentric shaft 31 is small, so that the reciprocating swing amplitude of the output rotor 10 is small;

When it is necessary to increase the reciprocating swing amplitude of the output rotor 10, the rotating motor 2 drives the first gear 20 to rotate counterclockwise, the latch 402 enters the outer ring groove 602 through the inclined groove 603, and the slider 40 overcomes the elastic force of the spring 50 and slides outward along the slide groove 301. At this time, the first eccentric shaft 401 drives the second eccentric shaft 31 to rotate through the connecting rod 4 to compensate for the eccentric movement of the first eccentric shaft 401, thereby changing the reciprocating swing amplitude of the second eccentric shaft 31, so that the output rotor 10 outputs a larger reciprocating swing amplitude.

As shown in Figures 1 and 2, a multi-output direction drive motor described in this embodiment, in some embodiments, the elastic rod includes a first rod body 81 and a second rod body 82, one end of the first rod body 81 is hinged on the inner wall of the rotating ring 9, one end of the second rod body 82 is slidably inserted on the other end of the first rod body 81, and the other end of the second rod body 82 is hinged on the inner wall of the output rotor 10, and a tension spring 83 is connected between one end of the second rod body 82 and the other end of the second rod body 82.

Initially, the second rod 82 is retracted into the first rod 81 under the tension of the tension spring 83, thereby driving the output rotor 10 to slide inward. When the rotating motor 2 drives the rotating shaft 3 to swing back and forth, the counterweight 7 is subjected to the centrifugal force, generating a rotational torque on the sliding sleeve 6, causing the sliding sleeve 6 to rotate, and the sliding sleeve 6 drives the elastic rod to rotate, thereby generating an outward thrust on the output rotor 10, causing the output rotor 10 to extend outward, as shown in FIG. 2 , and at the same time, the output rotor 10 drives the second rod 82 to overcome the tension of the tension spring 83 and extend; when the rotating shaft 3 rotates When it moves to the direction conversion point, the angular velocity decreases until it is zero, and the centrifugal force received by the counterweight 7 decreases accordingly. Under the tension of the tension spring 83 and the gravity of the counterweight 7, the output rotor 10 slides inward, and the second rod body 82 is retracted into the first rod body 81, as shown in Figure 1; this reciprocating process is repeated to achieve the continuous rotational motion of the rotating motor 2, which decomposes the output rotor 10 into the axial reciprocating linear motion and the reciprocating swinging motion around the axis, achieving the characteristics of multiple output directions, without the need to use two motor drives, reducing costs, facilitating control and reducing product volume.

In the driving motor with multiple output directions described in this embodiment, in some embodiments, the outer peripheral wall of the rotating shaft 3 is provided with a first profile structure, the sliding frame 5 is provided with a first profile hole, and the sliding frame 5 is slidably sleeved on the first profile structure of the rotating shaft 3 through the first profile hole. In this embodiment, the first profile hole and the first profile structure are matched, so that the sliding frame 5 can swing back and forth with the rotating shaft 3 and can also slide back and forth relative to the rotating shaft 3.

In the driving motor with multiple output directions described in this embodiment, in some embodiments, the other end of the connecting rod 4 is provided with a sliding hole 41, and the second eccentric shaft 31 is movably embedded in the sliding hole 41. In this embodiment, by providing the sliding hole 41, the second eccentric shaft 31 is slidably hinged to the connecting rod 4, so that the second eccentric shaft 31 can slide relative to the connecting rod 4 in the sliding hole 41, so that the rotating shaft 3 can stay at the direction conversion point for a period of time, so that the elastic rod can be reset, and the situation that the elastic rod cannot be retracted due to the excessive inertia of the counterweight block 7 is avoided, and the structural reliability is higher.

In some embodiments of the multi-output direction driving motor described in this embodiment, the other end of the first rod body 81 is provided with a second profile hole, and the outer wall of one end of the second rod body 82 is provided with a second profile structure, and the second profile structure slides into the second profile hole. In this embodiment, by providing the second profile hole and the second profile structure, the second rod body 82 can slide relative to the first rod body 81, and the rotational freedom between the first rod body 81 and the second rod body 82 can be limited.

The above is only a preferred embodiment of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the protection scope of the patent application of the present invention.

Claims (5)

1. The driving motor with multiple output directions is characterized by comprising a driving shell, wherein one end of the driving shell is provided with a rotating motor and a rotating shaft, the output end of the rotating motor is in transmission connection with a first eccentric shaft, one end of the rotating shaft, which is close to the rotating motor, is provided with a second eccentric shaft, the eccentric distance of the first eccentric shaft is smaller than that of the second eccentric shaft, a connecting rod is arranged between the first eccentric shaft and the second eccentric shaft, one end of the connecting rod is hinged with the first eccentric shaft, and the other end of the connecting rod is hinged with the second eccentric shaft;

The sliding frame can rotate along with the rotating shaft and slide relative to the rotating shaft, the sliding frame is hinged with a sliding sleeve, two centrally symmetrical balancing weights are arranged on the outer wall of the sliding sleeve, an elastic rod is arranged in the sliding sleeve in a sliding penetrating manner, a rotating ring is arranged at the other end of the driving shell in a rotating manner, an output rotor is arranged in a movable manner, the output rotor can rotate and slide relative to the driving shell, one end of the elastic rod is hinged with the inner wall of the rotating ring, and the other end of the elastic rod is hinged with the inner wall of the output rotor;

The output end of the rotating motor is connected with a first gear, the first gear is meshed with a second gear, the diameter of the second gear is larger than that of the first gear, a sliding groove is formed in the tooth surface of the second gear along the radial direction, a sliding block is connected in the sliding groove in a sliding manner, a spring is connected between the inner end of the sliding block and the groove wall of the sliding groove, and a first eccentric shaft is arranged at the outer end of the sliding block;

one end of the driving shell is provided with a connecting seat, the rotating motor is arranged on one side of the connecting seat away from the driving shell, and the second gear is rotationally arranged on one side of the connecting seat away from the driving shell;

The connecting seat is provided with a clamping groove, the clamping groove comprises an inner ring groove and an outer ring groove, and the inner ring groove is communicated with the outer ring groove through an inclined groove; the sliding block is convexly provided with a clamping pin, and the clamping pin movably penetrates through one side of the second gear, which is opposite to the second eccentric shaft, and then is movably clamped into the clamping groove.

2. The multi-output-direction driving motor according to claim 1, wherein the elastic rod comprises a first rod body and a second rod body, one end of the first rod body is hinged on the inner wall of the rotating ring, one end of the second rod body is slidably inserted on the other end of the first rod body, the other end of the second rod body is hinged on the inner wall of the output rotor, and a tension spring is connected between one end of the second rod body and the other end of the second rod body.

3. The multi-output-direction driving motor according to claim 1, wherein the peripheral wall of the rotating shaft is provided with a first profile structure, the sliding frame is provided with a first profile hole, and the sliding frame is slidably sleeved on the first profile structure of the rotating shaft through the first profile hole.

4. A multi-output direction driving motor according to claim 1, wherein the other end of the connecting rod is provided with a slide hole, and the second eccentric shaft is movably inserted into the slide hole.

5. The multi-output direction driving motor according to claim 1, wherein the other end of the first rod body is provided with a second profile hole, the outer wall of one end of the second rod body is provided with a second profile structure, and the second profile structure slides into the second profile hole.