CN2615951Y

CN2615951Y - Micro-DC lifting motor

Info

Publication number: CN2615951Y
Application number: CN 03238627
Authority: CN
Inventors: 金春根; 季双全; 原振华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-03-08
Filing date: 2003-03-08
Publication date: 2004-05-12
Anticipated expiration: 2013-03-08

Abstract

Disclosed is an advanced lifting direct current micro-motor, which by prolonging a main shaft arranged on the motor with a worm end and providing an electric brush frame, the main shaft can bear heavier load without liable to warp, to slip, and to break gear. The utility model has the advantages of low fault rate, safe and reliable operation, and increased power. The utility model also has the advantages of convenient and swift replacement and installation of electric brush, thereby prolonging the motor service life, shortening the maintenance man hour, and improving the efficiency.

Description

Miniature lifting DC motor

Technical field: the utility model relates to motor, relates in particular to a kind of miniature lifting DC motor.

Background technology: at present, miniature lifting motor adopts DC motor mostly, finds that through actual the use all there is following defective in this class motor: 1, electric machine main shaft is yielding.Existing motor main shaft when mounted, the end of band worm screw is vacant state, between this end and the fastening adjustment bolt that is screwed into from shell, only depend on a steel ball arbitrarily to contact, when a heavy load was excessive, electric machine main shaft very easily deformed, thereby caused the gap of main shaft worm and wheel engagement to increase, often cause faults such as skidding, beat tooth, have potential safety hazard.2, brush changing complex procedures.In DC motor, brush is easily-consumed products.DC motor is through running after a while, and its brush very easily weares and teares, and is not durable, in use need often to change, but, want to change brush because the brush of this motor all is installed in casing inside, just must therefore keep in repair time-consuming very inconvenient changing behind the motor completely knocked down.

Technical purpose: the purpose of this utility model provides the miniature lifting DC motor after a kind of improve, and the main shaft by prolonging motor band worm screw end and the brush stock is set make electric machine main shaft can bear bigger load, and brush changing is convenient and swift.

Technical scheme: the purpose of this utility model is achieved in that

Prolong one section optical axis the motor main shaft worm screw is terminal, with the terminal fastening adjustment screw that links to each other of main shaft worm screw on inwardly make a call to a circular hole vertically, the optical axis of described motor main shaft worm screw end partly can be stretched in this circular hole;

Secondly, remove the bakelite plate that is used for fixing brush in the DC motor, again on the motor housing wall, over against rotor commutator place, split two holes, a brush stock respectively is installed in the hole, just can finish replacing so from the outside to brush.

Described brush stock is made by insulating material, is the ladder tubulose, the part that the stock internal diameter is thicker, and inwall has screw thread, and this port is by sealing the screw shutoff; The part embedded metal sleeve pipe that internal diameter is thinner, metal sleeve partly stretches out outside the stock, and brush is installed in the metal sleeve, and brush and seal spring is arranged between the screw can be adjusted the pressure of brush contact rectification.

Described in detail below in conjunction with accompanying drawing;

Fig. 1 is the profile of the utility model electric machine main shaft and fastening adjustment screw fit;

Fig. 2 is the profile of the utility model center brush stock.

As shown in the figure: motor main shaft 5 worm screw ends have prolonged one section optical axis 4, and optical axis 4 can stretch into the circular hole from the fastening adjustment screw 3 that motor casing 1 is screwed into.Between optical axis 4 and the fastening adjustment screw 3 steel ball 2 is arranged, its effect is to reduce friction; Behind motor operation certain hour, need not to open casing, can make between optical axis 4 and the fastening adjustment screw 3 and cooperate as before as long as regulate fastening adjustment screw 3 from the outside.

Two brush stock 10 symmetries are installed on the wall of motor housing 11, and the brush stock is made by insulating material, is the ladder tubulose, and external port is by sealing screw 9 shutoff; Brush 6 stretches out at the effect lower edge of spring 8 metal sleeve 7.

Because the terminal prolongation of main shaft worm screw stretches into fastening adjustment screw endoporus, so main shaft is not yielding, the gap of worm and gear engagement does not have and skids, beats the tooth phenomenon, has guaranteed the safe handling of main shaft.

When changing brush, only need turn on and seal screw 9 on the brush stock, can take out brush, avoid the loaded down with trivial details operation of dismounting motor housing.

Beneficial effect: after adopting above-mentioned measure, the utility model can produce following good effect: 1, electric machine main shaft is not yielding, and is non-slip, do not play gear, failure rate is low, and security of operation can Lean on the increase of output power. 2, change, that brush is installed is convenient and swift, has prolonged motor service life, Shorten hours to repair, improved operating efficiency.

Claims

1, a kind of miniature lifting DC motor, it is characterized in that: one section optical axis of the terminal prolongation of motor main shaft worm screw, with the terminal fastening adjustment screw that links to each other of main shaft worm screw on inwardly make a call to a circular hole vertically, the optical axis of described motor main shaft worm screw end partly stretches in this circular hole; On the motor housing wall, over against rotor commutator place, split two holes, a brush stock respectively is installed in the hole.

2, the miniature lifting DC motor of stating according to claim 1, it is characterized in that: described brush stock is made by insulating material, is the ladder tubulose, the part that the stock internal diameter is thicker, inwall has screw thread, and this port is by sealing the screw shutoff; The part embedded metal sleeve pipe that internal diameter is thinner, metal sleeve partly stretches out outside the stock, and brush is installed in the metal sleeve, brush and seal spring is arranged between the screw.