CN2198143Y - Motor drive type high and low speed conversion device - Google Patents

Abstract

A motor-driven high-low speed converter is composed of a main body, a motor with positive and negative switching control, a speed-varying gear, a central control gear, two unidirectional clutches, a speed-reducing gear, an accelerating gear and a gear shaft with power output shaft at its end.

Description

The utility model relates to a motor-driven high-low speed conversion device, in particular to a motor-driven and reverse-operated two sets of one-way clutches to achieve high-low speed output conversion through different gear meshing ratios, thereby controlling the connected Set the tool disc speed and torque device.

Due to the increasing progress of the society and the relative improvement of people's living standards, the current trend of emphasizing high efficiency and high enjoyment has formed. Therefore, many products that use electric tools instead of manual applications continue to be produced, but generally speaking, hand tools driven by small motors , there is only a single motion state, and it cannot be used in different occasions for appropriate applications, such as: car washing, waxing and washing, vibration or rolling of massagers, electric bottle washing and egg beaters for kitchen utensils, etc. in:

Car washing and waxing: When scrubbing, the brush must be used to perform detailed and thorough scrubbing with slow speed and high torque. Therefore, the speed should not be too fast, otherwise the liquid (detergent or water) will produce a spin spray along the centrifugal direction. When waxing, the wax oil should be evenly wiped with foam or flannelette, and then polished at high speed with the cloth wheel body, so the high and low speeds of washing and waxing must be different, so as to truly complete the application. have the function.

Currently commercially available electric bottle washers and egg beaters are all products with a single function. Although there are researches and developments with multiple functions, they all have poor results because only the same rotating speed is shared.

Massage has always been a simple way to relieve fatigue in a busy life, but the massage effects are different due to different massage properties. At present, the most effective and widely used electric massager has two types: roller massage and vibration massage. Among them, the roller massage is realized by the low speed and high torque when the motor is driven, while the vibration massage is completed by the high speed of the motor, so the transmission mode of the roller massage and the vibration massage are completely different. Therefore, the existing massager must use Roller and vibration massage are performed on different subjects.

The purpose of this utility model is to provide a motor-driven high-low speed conversion device, which can achieve the purpose of high and low speed conversion of the same output shaft only through the forward and reverse control of the power supply under the condition of a main body and a motor , or let different output shafts output high and low speed respectively according to the needs.

According to a motor-driven high-low speed conversion device provided by the utility model, it is characterized in that the main body is equipped with a motor for forward and reverse switching control of the power supply, the shaft end gear is engaged with a speed change gear, and the small wheel of the speed change gear is meshed with a speed change gear. The central control gear, the upper and lower sides of the central control gear are respectively equipped with a one-way clutch. The end face of the gear protrudes into a reverse arc to form a pair of meshing teeth of a one-way clutch, and the end face of the other acceleration gear protrudes forward and arcs to form a pair of meshing teeth of another one-way clutch. The spring of the top deceleration and acceleration gear, the deceleration gear or the acceleration gear are meshed with a gear shaft, and the shaft end is provided with a protruding main body to cooperate with the power output shaft used for the replacement of various tool trays; The meshing teeth of the gear mesh and drive it to rotate. The reverse meshing teeth and the acceleration gear slip and idle due to the contact of the arc surface. When the central control gear reverses, the reverse meshing teeth mesh with the meshing teeth of the acceleration gear and drive it to rotate. The meshing teeth and the reduction gear slip and idle due to the abutment of the arc surface.

The motor-driven high-low speed conversion device of the present utility model and its embodiments will now be described in detail in conjunction with the accompanying drawings.

Fig. 1 is the three-dimensional exploded view of the device of the present invention.

Fig. 2 is an assembly cutaway and operation diagram of the device of the present invention.

Fig. 2A is a schematic diagram of another usage state of the device of the present invention.

Fig. 3 is an assembly cutaway and operation diagram of another embodiment of the present invention.

Fig. 3A is a schematic diagram of another usage state of another embodiment of the present invention.

At first, please refer to Fig. 1, 2 and Fig. 2A explanation shows: the utility model mainly is provided with the motor M of forward and reverse cutting control of power supply in a main body 2, transmits a variable speed gear 3 through shaft end gear M1, and then The small wheel 31 of the transmission gear 3 drives the central control gear 4, and the central control gear is provided with a one-way clutch on the upper and lower sides. A pair of meshing teeth 41 and 42, and the end surface of the reduction gear 6 located on the coaxial 5 protrudes into a reverse arc to form a pair of meshing teeth 61 of a one-way clutch, and the end surface of the other acceleration gear 7 protrudes into a forward arc A pair of meshing teeth 71 constituting another one-way clutch, the two ends of the shaft are forced to decelerate by the spring S respectively. Mesh, then drive a gear shaft 8 to rotate with the reduction gear 6 or the acceleration gear 7, the shaft end is provided with a power output shaft 81 protruding from the main body 2 to output power; when the power output shaft 81 is socketed with the brush plate A for use, it must be controlled The motor M rotates forward, and the opposite central control gear 4 also rotates forward, so that the forward meshing teeth 41 mesh with the meshing teeth 61 of the reduction gear 6, and then drive the reduction gear 6 to run (while the reverse meshing teeth 42 and the acceleration gear 7 are then Slipping and idling due to the contact of the arc surface), the power output shaft 81 drives the brush plate A to rotate at a low speed to perform thorough brushing (as shown in Figure 2); To control the reverse rotation of the motor M, the central control gear 4 is relatively reversed, so that the reverse meshing teeth 42 mesh with the meshing teeth 71 of the acceleration gear 7, and drive the acceleration gear 7 to run (at the same time, the forward meshing teeth 41 and the reduction gear 6 due to The surface of the arc is abutted to form a slipping idle), and the power output shaft 81 promptly produces a high-speed drive flannelette disc B, which is convenient for the implementation of waxing and polishing (as shown in Figure 2A).

Further please refer to Fig. 3 and Fig. 3A, another embodiment of the utility model maintains the original basic transmission structure, but on the same side of the power output shaft 81, a plurality of convex posts 91 are added on the end surface. Movable massage disc 9, and power take-off shaft 81 is equipped with the roller massage seat C that ball rolls, and it mainly controls meshing tooth 42 and the meshing tooth 71 meshing of acceleration gear 7 by motor M reverse rotation, and this acceleration gear 7 is about to power It is transmitted to the massage disc 9 fixedly connected to the eccentric wheel shaft 92, and the eccentric wheel 921 is rotated to form a high-speed vibration effect, which can provide a high-frequency point-like massage (as shown in Figure 3); when the motor M rotates forward, the central control The gear 4 meshes with the reduction gear 6, so that the reduction gear 6 outputs slow rotating power to the roller massage seat C, thereby generating low-speed kneading and rolling motion (as shown in Figure 3A).

In summary, the utility model only makes the two one-way clutches transmit accurately and stably by switching the forward and reverse directions of the power supply, that is, it provides a wide range of high and low speed conversion effects, thereby significantly improving the performance of the motor transmission tool. applicability.

Claims (2)

1. A motor-driven high-speed and low-speed conversion device, which is characterized in that the main body is equipped with a motor for forward and reverse switching control of the power supply, the shaft end gear is engaged with a speed change gear, and the small wheel of the speed change gear is meshed with a central control gear The central control gear is equipped with a one-way clutch on the upper and lower sides, and the two ends of the central control gear protrude into a forward arc and a reverse arc respectively to form a pair of meshing teeth of a one-way clutch, while the end face of the coaxially positioned reduction gear protrudes Extended into a reverse arc to form a pair of meshing teeth of a one-way clutch, and the end face of the other acceleration gear protrudes forward and arcs to form a pair of meshing teeth of another one-way clutch. The spring of the acceleration gear, the reduction gear or the acceleration gear are meshed with a gear shaft, and the shaft end is provided with a protruding main body to cooperate with the power output shaft used for the replacement of various tool trays; The teeth mesh and drive it to rotate, the reverse meshing teeth and the acceleration gear slip and idle due to the contact of the arc surface, when the central control gear reverses, the reverse meshing teeth mesh with the meshing teeth of the acceleration gear and drive it to rotate, and the forward meshing teeth and The reduction gear slips and idles due to the abutment of the arc surface. 2. The motor-driven high-low speed conversion device according to claim 1; it is characterized in that on the same side of the power output shaft, a movable massage disc with a plurality of convex posts is added on the end surface, which meshes with the acceleration gear and Driven by it, and the power output shaft is equipped with a roller massage seat with ball rolling, which is engaged with the reduction gear and driven by it.

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