CN203377710U

CN203377710U - Rear end cover structure of micro-motor

Info

Publication number: CN203377710U
Application number: CN201320439726.6U
Authority: CN
Inventors: 沈立
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-23
Filing date: 2013-07-23
Publication date: 2014-01-01
Anticipated expiration: 2023-07-23

Abstract

The utility model relates to a rear end cover structure of a micro-motor capable of solving the fixing problem that the rear end cover of the conventional micro-motor is lack of the stable capacitor element. The device comprises a disc-shaped rear end cover body, and the brushes are respectively fixedly disposed on two ends of an internal side surface of the rear end cover body by brush arms in a diameter direction. The rear end cover structure of the micro-motor is characterized in that an annular-shaped flange is disposed on an annular periphery of the internal side surface of the rear end cover body, and an outer side of the flange is embedded in a rear end of the motor housing; an internal side of the flange is provided with brush fixing racks, and tail ends of the brush arms are clamped between the flange and the brush fixing racks; the internal side of the flange is also provided with two capacitor fixing racks respectively corresponding to the brush fixing racks, capacitor elements are clamped between the capacitor fixing racks and the flange, and each of the capacitor elements is provided with two pins; one pin and the corresponding tail end of the brush arm are clamped between flange and the brush fixing racks, and the other pin is disposed on an outer side of the flange in an overlapped manner, and then is embedded between the flange and the motor housing. The rear end cover structure is advantageous in that the fixing of the capacitor elements is stable and reliable, and the contact between two pins of the capacitor elements is guaranteed.

Description

A kind of micromachine rear end cover structure

Technical field

The utility model relates to a kind of motor component, particularly a kind of micromachine rear end cover structure.

Background technology

Existing micromachine generally arranges the capacity cell that increases antijamming capability on rear end cap, and a pin of capacity cell connects brush arm, and another pin connects motor housing.Traditional capacity cell pin fixed form generally adopts welding, and in production process, labour intensity is large, and affects production efficiency; And because the size of micromachine own is little, the contact-making surface of solder joint is also little, easily causes that solder joint comes off, and affects the motor serviceability; Even for easy making process, the capacity cell of some micromachines is arranged on the outside of rear end cap, and the pin of capacity cell is welded on the part that brush arm extends to the rear end cap outside, not only affects outward appearance, and increased the relative distance of capacity cell and machine shaft, affect performance.In sum, the performance important of the stability that capacity cell connects to micromachine, and lack stable capacity cell fixed form on existing micromachine rear end cap.

Summary of the invention

The purpose of this utility model is to provide a kind of with the support bracket fastened micromachine rear end cover structure of capacity cell for lacking the problem of stable capacity cell fixed form on existing micromachine rear end cap.

The utility model solves the technical scheme that its technical problem adopts: a kind of micromachine rear end cover structure, comprise discoidal rear end cap body, the diametric two ends of rear end cap body medial surface are fixed with brush by brush arm respectively, rear end cap body medial surface ring has annular flange flange on week, flange outer sides is embedded the rear end of electric machine casing, flange inner is provided with the brush fixed mount, the brush arm tail end is folded between flange and brush fixed mount, flange inner also is provided with and is arranged with two electric capacity fixed mounts corresponding with the brush fixed mount respectively, be folded with capacity cell between electric capacity fixed mount and flange, capacity cell has two pins, a pin is fastened between flange and brush fixed mount together with corresponding brush arm tail end, another pin is set up in the outside to flange and is embedded between flange and motor housing.Capacity cell is arranged on the inboard of rear end cap body, advance from rotating shaft position, possess stronger antijamming capability, and special electric capacity fixed mount is set in the inboard of rear end cap body capacity cell is located, prevent that capacity cell in use is shifted, there is better stability.A pin of capacity cell is embedded between brush fixed mount and flange together with the brush arm tail end, utilize well the tensile force of hardware itself to fix, difficult drop-off, another pin utilizes the embedded close-fitting structure of flange outer sides face and motor housing to clamp, the not only good contact of maintenance and motor housing, and difficult drop-off.

As preferably, described electric capacity fixed mount with corresponding brush retaining clip at circumference upper deflecting 45 degree.

As preferably, described capacity cell and corresponding brush arm lay respectively at the both sides of brush fixed mount.Take full advantage of the space of rear end cap body inboard, the elasticity scope of activities that the setting of capacity cell can the audio amplifier brush arm.

As preferably, between the excircle of described flange and rear end cap body, there is the step that is fastened on the electric machine casing rear end.The ring of rear end cap has step on week, and embedding utilizes step to position behind the electric machine casing rear end.

As preferably, with described electric capacity fixed mount radially the flange of correspondence position be provided with the groove be hooked for the electric capacity component pin and lack.Groove lacks employing V font or U font etc., can provide location for the pin of capacity cell.

As preferably, lack correspondence position with groove on described rear end cap body excircle and be provided with the groove embedded for the electric capacity element.The capacity cell pin can embed in groove, avoids pin to be blocked disconnected, can ensure again contacting of pin and electric machine casing.

As preferably, the flange inner of aliging with described brush fixed mount also has the pin groove that the pin for the electric capacity element snaps in.

As preferably, described rear end cap body is engraved structure.

The utility model arranges the electric capacity fixed mount in the inboard of micromachine rear end cap and locates specially capacity cell, fixing reliable and stable, prevents the displacement of capacity cell; And two pins of capacity cell utilize respectively the installation of rear end cap itself to coordinate tensile force to fix, fixing reliable, contact secure.

The accompanying drawing explanation

Fig. 1 is a kind of structural representation of the present utility model.

In figure: 1, flange, 2, brush arm, 3, the brush fixed mount, 4, brush, 5, the electric capacity fixed mount, 6, capacity cell, 7, groove lacks, 8, groove, 9, pin groove.

Embodiment

Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: a kind of micromachine rear end cover structure, as shown in Figure 1.The side of rear end cap body and electric machine casing assembling has annular flange 1, the step coordinated with the electric machine casing clamping of outer shroud week formation of flange outer sides and rear end cap body.The tail end that flange 1 inboard is arranged with 3, two brush arms 2 of two brush fixed mounts is folded in respectively between two brush retaining clips 3 and flange 1.The front end of two brush arms 2 is equipped with respectively brush 4, two brushes and is oppositely arranged, and during assembling, from both sides, embraces and is clipped in motor shaft respectively.Brush arm stretches out from a side of brush fixed mount, and the opposite side of brush fixed mount 3 is provided with electric capacity fixed mount 5, and the electric capacity fixed mount is spent with 3 deflections 45 of brush fixed mount on circumference, to guarantee that can not extend through the brush arm come with opposite forms interference.Between electric capacity fixed mount 5 and flange, sandwiched is fixed with capacity cell 6, and capacity cell has two pins.The flange inner face alignd with brush fixed mount 3 is provided with pin groove 9, and pin of capacity cell inserts in the pin groove, is embedded between brush arm tail end and flange; The groove that the flange alignd with electric capacity fixed mount 5 is provided with V-arrangement lacks 7, and rear end cap body ring week being provided with groove 8 with scarce being aligned in of V-shaped groove, another pin of capacity cell is set up at the groove of V-arrangement and is lacked, and embeds in groove 8, after assembling with electric machine casing, utilize electric machine casing that pin is compressed.

Adopt this apparatus structure, capacity cell is fixing reliable and stable, the pin difficult drop-off, and motor has better shock resistance, antijamming capability.

Claims

1. a micromachine rear end cover structure, comprise discoidal rear end cap body, the diametric two ends of rear end cap body medial surface are fixed with brush by brush arm respectively, it is characterized in that: rear end cap body medial surface ring has annular flange flange on week, flange outer sides is embedded the rear end of electric machine casing, flange inner is provided with the brush fixed mount, the brush arm tail end is folded between flange and brush fixed mount, flange inner also is provided with and is arranged with two electric capacity fixed mounts corresponding with the brush fixed mount respectively, be folded with capacity cell between electric capacity fixed mount and flange, capacity cell has two pins, a pin is fastened between flange and brush fixed mount together with corresponding brush arm tail end, another pin is set up in the outside to flange and is embedded between flange and motor housing.

2. a kind of micromachine rear end cover structure according to claim 1 is characterized in that: described electric capacity fixed mount with corresponding brush retaining clip at circumference upper deflecting 45 degree.

3. a kind of micromachine rear end cover structure according to claim 1 and 2, it is characterized in that: described capacity cell and corresponding brush arm lay respectively at the both sides of brush fixed mount.

4. a kind of micromachine rear end cover structure according to claim 1, is characterized in that: between the excircle of described flange and rear end cap body, have the step that is fastened on the electric machine casing rear end.

5. according to claim 1 or 2 or 4 described a kind of micromachine rear end cover structures, it is characterized in that: with described electric capacity fixed mount radially the flange of correspondence position be provided with the groove be hooked for the electric capacity component pin and lack.

6. a kind of micromachine rear end cover structure according to claim 5, is characterized in that: lack correspondence position with groove on described rear end cap body excircle and be provided with the groove embedded for the electric capacity element.

7. according to claim 1 or 2 or 4 described a kind of micromachine rear end cover structures, it is characterized in that: the flange inner of aliging with described brush fixed mount also has the pin groove that the pin for the electric capacity element snaps in.

8. according to claim 1 or 2 or 4 described a kind of micromachine rear end cover structures, it is characterized in that: described rear end cap body is engraved structure.