CN2611224Y

CN2611224Y - Transmission mechanism of electric reverser of rearview mirror

Info

Publication number: CN2611224Y
Application number: CN 02286491
Authority: CN
Inventors: 傅家达
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-02
Filing date: 2002-12-02
Publication date: 2004-04-14
Anticipated expiration: 2012-12-02

Abstract

A transmission mechanism of a rear-view mirror electric commutator is arranged in a commutator in a rear-view mirror of an automobile, is used for automatically adjusting the angle of a lens in the rear-view mirror so as to enlarge the visual angle range of a driver, and is suitable for being arranged and used in various types of vehicles. The friction clutch is formed by integrally injection-molding a driven wheel embedded with a transmission shaft and a gear, is integrally connected with a driving wheel and a worm wheel, and is connected with a spring, a gasket and a snap spring at the transmission shaft on the end face of the worm wheel. Because the gear and the driven wheel as well as the worm wheel and the driving wheel are of two integral structures, the phenomenon of looseness caused by vibration or temperature change when the automobile runs at high speed can be avoided, and the service life is long. The speed change mechanism is horizontally mounted and transversely meshed with the friction clutch, so that the transmission is stable, the stability is good, and the output torque is larger and can be regarded as constant.

Description

The transmission device of rear-view mirror electric commutator

Technical field

The utility model relates to a kind of being installed in the automobile rearview mirror, is used for the angle of automatically regulating back mirror eyeglass, to enlarge the vitals on the employed electronic commutator of chaufeur angular field of view, the transmission device of rear-view mirror electric commutator.The supporting use of back mirror on suitable especially and big, microbus and all kinds lorry.

Background technology

" electric steering device transmission for rear-view mirror of car " on a company of Hyunju and the Chinese vapour red flag century star, a kind of electrical motor gearshift is provided after driving-shaft assembly be provided with friction slip mechanism.Though it has solved the gear mesh rack driven on the top or during the end limits position, can send the easily stuck and problem of burning of very big noise and motor, but a driving disc spacing pressing is overlapping by an axle sky in its friction slip mechanism, driving disc spacing pressing is outward the worm gear in the speed-changing mechanism, overlapping a platen and clutch plate in addition again, the clutch plate flower wheel of ining succession.Because friction slip mechanism is connected to form by four vital partss, the integral structure reliability is relatively poor.And that driving disc spacing pressing is enclosed within worm driver gear internal friction area is little, thereby friction moment is little.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of transmission device of rear-view mirror electric commutator is provided, is installed in the commutator of back mirror, its more reasonable structure, driving torque are greatly, rotation is more steady, noise is little, and long service life.

The technical scheme in the invention for solving the above technical problem is: the transmission device of rear-view mirror electric commutator, include the driving-shaft assembly tooth bar of engages fixed on floating ring that cog, the driving-shaft assembly of motor behind speed-changing mechanism is provided with friction clutch, and described friction clutch, the integral body that is injection molded into by flower wheel that is embedded with transmission shaft and gear is connected with the integral body that driving wheel and worm gear are injection molded into, and, be connected with spring, packing ring and jump ring and constitute at the transmission shaft place of worm gear end face.

Compared with prior art, advantage of the present utility model is, because of friction clutch links into an integrated entity with spring and jump ring and constitutes by being injection molded into single-piece flower wheel, driving wheel, makes, assembling is more convenient.Gear and flower wheel, worm gear and driving wheel are integral structure, and loosening phenomenon appears in vibrations in the time of can be because of high-speed running automobile or variation of ambient temperature, thereby long service life.Have the variable shaft of worm screw, worm gear simultaneously in the speed-changing mechanism, be installed on the base by the fix shaft at its two ends is horizontal, horizontal, make all laterally engagements of worm gear, worm screw, it is more reliable to work, thereby output torque is bigger, and it is constant that output torque can be considered.Be to be fixed on the base with friction clutch one end tooth wheel bonded assembly fixed mount in addition, therefore the engagement rotation is more steady, good stability, more reliable, the safety of working.

Description of drawings

Fig. 1. the assembly drawing of the utility model commutator.

Fig. 2. the friction clutch structural representation.

Fig. 3. right half block diagram of fixed mount.

The specific embodiment

Embodiment is further described the utility model below in conjunction with accompanying drawing.

Variable shaft 12 1 ends are worm gear, and an end is a worm screw.

Be bar shaped in the middle of the fixed mount 1, two ends have the sash 20 of joint pin, through hole and guide wall for symmetry.

Transmission shaft 18 is that the metal that an end has a ring groove gives embedded part.

The flower wheel 7 and the gear 6 that are embedded with transmission shaft 18 are injection molded into integral body, and the worm gear 9 of driving wheel 8 and band groove is injection molded into integral body.

Friction clutch is linked into an integrated entity by driving wheel 8 and flower wheel 7 usefulness transmission shafts 18, and on the transmission shaft 18 of worm gear 9 grooves on the driving wheel 8 mounting spring 10, constitute with packing ring 11, jump ring 19 are fixing.

The abrasive end face of driving wheel 8 is complementary for the concave surface and flower wheel 7 abrasive end faces on band inclined-plane, and is close to and closes.

Motor 15, variable shaft 12 are orthogonal, and in the horizontal groove that is installed on the base 16, fixed mount 1 is screwed on the other base 16 of variable shaft 12; Insert in the sash 20 on the fixed mount 1 lower end of tooth bar 5, and the upper end bulb is held in the projection seat 4 on the floating ring 3.Motor cover plate 14 is pushed down motor 15, and is screwed on base plate 16.The two ends of friction clutch are connected in the through hole and the blind hole on the motor cover plate 14 on the fixed mount 1, and the gear 6 on it is meshed with tooth bar 5, worm mesh on worm gear 9 and the variable shaft 12, and the worm screw 13 that the worm gear on the variable shaft 12 is captiveed joint with motor 15 axle heads connects and composes second-stage worm gear, worm screw speed-changing mechanism, and the two ends of floating lever 17 are movably connected in the joint pin on the floating ring 3.

Whole commutator is screwed on the automobile rearview mirror base plate, the back mirror that assembles is installed in outside the operator's compartment, master cock is installed in the car door, chaufeur is in operator's compartment during work, press master cock, motor 15 rotates and drives worm screw 13 rotations, rotate with the whole variable shaft 12 of its ingear first-stage worm gear drives, thereby drive second-stage worm gear 9 rotations with worm mesh, making the driving wheel of fixing on it 8 pass to flower wheel 7 by friction moment rotates, the gear 6 that is fixed together with it rotates, on drive and its ingear tooth bar 5, following motion, on tooth bar 5, following motion is transformed into the rotation of floating ring 3 relative bases 16, reaches the purpose of adjusting the back mirror angle, and the effect of spring 10 is to regulate friction moment, promptly to guarantee enough carry-over moments, when guaranteeing that again tooth bar 5 moves to end position, guarantee main,

flower wheel

8,7 skid, and prevent that motor 15 from burning.

Claims

1. the transmission device of a rear-view mirror electric commutator, include the driving-shaft assembly tooth bar (5) of (6) engages fixed on floating ring (3) that cog, the driving-shaft assembly of motor (15) behind speed-changing mechanism is provided with friction clutch, it is characterized in that the integral body that described friction clutch is injection molded into by flower wheel that is embedded with transmission shaft (18) (7) and gear (6), be connected with the integral body that worm gear (9) is injection molded into driving wheel (8), and locate at the transmission shaft (18) of worm gear (9) end face, be connected with spring (10), packing ring (11) and jump ring (19) and constitute.

2. transmission device according to claim 1 is characterized in that transmission shaft (18) is that the metal of an end band groove gives embedded part.

3. transmission device according to claim 1 is characterized in that an end is a screw rod in the speed-changing mechanism, and an end is that the variable shaft (12) of worm gear laterally is installed on the base (16), laterally meshes with friction clutch.

4. transmission device according to claim 1, the gear (6) that it is characterized in that friction clutch hold be fixed on base (16) on fixed mount (1) on through hole be connected.