CN2746639Y

CN2746639Y - Buffer electric machine

Info

Publication number: CN2746639Y
Application number: CN 200420083150
Authority: CN
Inventors: 黄锦山
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-23
Filing date: 2004-08-23
Publication date: 2005-12-14
Anticipated expiration: 2014-08-23

Abstract

The utility model relates to a buffering electric machine, in particular to an electric machine which can gradually accelerate from a static state to a dynamic state, and stably enters uniform speed running. The buffering electric machine is characterized in that: a worm gear is fixed on a worm gear shaft, and a radial bearing, a buffering seat, a rotating buffer, a spring, and a spring seat are orderly sheathed on the worm gear shaft of the right end of a clamping ring. The spring seat is provided with a groove, and the spring seat is fixedly mounted on the worm gear shaft. The rotating buffer is provided with a groove, and a rotating buffering bearing is mounted on the circular outer wall of the groove. The spring seat and the rotating buffer are engaged in a decussation mode. One end of the buffering seat is a circular arc shape, and the rotating buffering bearing is contacted with the circular arc surface of the buffering seat. A chain wheel is provided on the outer circumference surface of the buffering seat. Due to the fact that the spring seat and the worm gear shaft are fixedly connected by a movable on-off key, and the complete and stabile transfer of power is ensured. The utility model can make external power and an external carrying load obtain a proper critical point according to different external carrying loads, thereby, the output of the power is stable and reliable, and the life of a door, the electric machine, and a transmission element is lengthened.

Description

A kind of buffer motor

Technical field:

The utility model relates to a kind of motor, particularly a kind of can be from static state to quickening, steadily enter the motor that travels at the uniform speed dynamically, gradually.

Background technology:

At present, retractable door commonly used or translation door be by the driven by motor operation, owing to adopt positive drive, when starting retractable door or translation door under static state, the impulsive force of electric motor starting moment is bigger.Its percussion to retractable door, translation door and power transmission mechanism is extremely strong, and this impulsive force and toggle speed relation in direct ratio.This percussion is extremely unfavorable for retractable door, translation door and power transmission mechanism life-span.Because motor moment starting or stop, under the state of being rigidly connected, power transmission mechanism is transferred to door with motor force in moment, for overcoming the inertia under the static state, to cause and start to walk or stop instability, secondly, impulsive force will make connecting portion produce cutting force, make parts fatigue, cause retractable door or translation door to damage, at last, impact endurance test shock will produce very big noise, contaminated environment.

Summary of the invention:

Goal of the invention of the present utility model provides a kind of compact conformation, cost is low, can be from static state to quickening, steadily enter the at the uniform velocity motor of transferring power dynamically, gradually.

In order to achieve the above object, the utility model is by the following technical solutions: worm gear 3 is nested with and is fixed on the worm-wheel shaft 4, have annular groove and keyway on the worm-wheel shaft 4, be placed with snap ring 5 and movable clutch key 16 in it respectively, be equipped with journal bearing 6, buffing pad 7, rotation buffering 8, spring 9 and spring base 10 on the worm-wheel shaft 4 of snap ring 5 right-hand members successively; Spring base 10 is cylindric, and the one end has groove 11; Spring base 10 is fixedly mounted on the worm-wheel shaft 4 by movable clutch key 16; Rotation buffering 8 one ends have groove 12, and rotation buffering bearing 13 is installed on the circular outer wall of its other end; The groove 11 of spring base 10 is the right-angled intersection engagement with the groove 12 of rotation buffering 8; Be equipped with spring 9 on the worm-wheel shaft 4 between spring base 10 and the rotation buffering 8; Buffing pad 7 one ends are circular-arc, and rotation buffering bearing 13 contacts with buffing pad arc surface 14; Buffing pad 7 outer circumference surfaces are provided with sprocket wheel 15.

After adopting above technical scheme, motor power is passed to worm gear by worm screw, worm gear is passed to spring base with power by worm-wheel shaft, because of spring base is fixedlyed connected by movable clutch key with worm-wheel shaft, spring base can not rotate or moves radially along worm-wheel shaft around worm-wheel shaft like this, has guaranteed complete, the stable delivery of power.Spring base adopts the cross mode to connect with the rotation buffering with groove, has also guaranteed the stable delivery of power, and the rotation buffering is moved radially along worm-wheel shaft.Rotation buffering bearing contacts with the arc surface of buffing pad, and can move along arc surface, and rotation buffering bearing drives buffing pad and rotates, and like this, the sprocket wheel of buffing pad drives retractable door or the motion of translation door by chain.Because of rotation be buffered in the elongation of spring or shrink under can do radial motion along worm-wheel shaft, it can load with lotus and move along the arc surface of buffing pad automatically outward according to different, make extrinsic motive and load with lotus outward and reach a suitable point that faces, thus make dynamic start output steadily, reliable.Retractable door or translation door are opened, closed at the uniform velocity, do not have impact, can prolong the life-span of retractable door, translation door, motor, drive disk assembly greatly.Be equipped with journal bearing again on the worm-wheel shaft between snap ring and the buffing pad again, this bearing can reduce the friction of buffing pad, makes the buffing pad stability of rotation, and power loss is few.

The absorption of the utility model by axial motion and spring weakened the motor starting effectively or stopped the rotary impact power of moment, make the starting of retractable door or translation door or stop time action and releive, reduced simultaneously and impacted the noise that forms when retractable door or translation door start, eliminated to start and impacted the rotation cutting that parts are formed, the therefore effective utilization and the useful life of having improved retractable door or translation door effectively.In addition, the utility model is simple in structure, and reliable operation is practical.

Description of drawings:

Fig. 1 is the utility model assembling decomposition texture schematic diagram.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described:

As shown in Figure 1, the utility model is made up of motor 1, worm screw 2, worm gear 3, worm-wheel shaft 4, spring 9 and rotation buffer unit, worm gear 3 is nested with and is fixed on the worm-wheel shaft 4, have annular groove and keyway on the worm-wheel shaft 4, be placed with snap ring 5 and movable clutch key 16 in it respectively, be equipped with journal bearing 6, buffing pad 7, rotation buffering 8, spring 9 and spring base 10 on the worm-wheel shaft 4 of snap ring 5 right-hand members successively; Spring base 10 is cylindric, and the one end has groove 11; Spring base 10 is fixedly mounted on the worm-wheel shaft 4 by movable clutch key 16; Rotation buffering 8 one ends have groove 12, and rotation buffering bearing 13 is installed on the circular outer wall of its other end; The groove 11 of spring base 10 is the right-angled intersection engagement with the groove 12 of rotation buffering 8; Be equipped with spring 9 on the worm-wheel shaft 4 between spring base 10 and the rotation buffering 8; Buffing pad 7 one ends are circular-arc, and rotation buffering bearing 13 contacts with buffing pad arc surface 14; Buffing pad 7 outer circumference surfaces are provided with sprocket wheel 15.

When motor 1 starts, rotation buffering bearing 13 on the rotation buffering 8 is in the lowermost end of the arc surface 14 on the

buffing pad

7,13 beginnings of rotation this moment buffering bearing are moved to buffing pad 7 outer circle walls along arc surface 14, and drive buffing pad 7 lentamente and rotate, when outside carry with power and be in when facing point, sprocket wheel 15 drives retractable door or translation door uniform motion.

Claims

1, a kind of buffer motor, form by motor (1), worm screw (2), worm gear (3), worm-wheel shaft (4), spring (9) and rotation buffer unit, it is characterized in that worm gear (3) is nested with is fixed on the worm-wheel shaft (4), worm-wheel shaft has annular groove and keyway on (4), be placed with snap ring (5) and movable clutch key (16) in it respectively, be equipped with journal bearing (6), buffing pad (7), rotation buffering (8), spring (9) and spring base (10) on the worm-wheel shaft (4) of snap ring (5) right-hand member successively; Spring base (10) is cylindric, and the one end has groove (11); Spring base (10) is fixedly mounted on the worm-wheel shaft (4) by movable clutch key (16); Rotation buffering (8) one ends have groove (12), and rotation buffering bearing (13) is installed on the circular outer wall of rotation buffering (8); The groove (11) of spring base (10) is the right-angled intersection engagement with the groove (12) of rotation buffering (8); Be equipped with spring (9) on the worm-wheel shaft (4) between spring base (10) and the rotation buffering (8); Buffing pad (7) one ends are circular-arc, and rotation buffering bearing (13) contacts with buffing pad arc surface (14); Buffing pad (7) outer circumference surface is provided with sprocket wheel (15).