CN101871492A

CN101871492A - Clutch

Info

Publication number: CN101871492A
Application number: CN200910097984A
Authority: CN
Inventors: 丁文军
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-27
Filing date: 2009-04-27
Publication date: 2010-10-27

Abstract

The invention relates to a clutch which is applicable to a small motor, comprises a motor (1), a clutch outer cover (3), a ratchet wheel (4), a pin (5) and a spring (6), and has the characteristics of low cost, smaller volume and easy processing. The clutch can be used for occasions such as a door lock, a mahjong machine, a curtain machine, an electric switching-on mechanism of a circuit breaker and the like, has low requirement for moment of force, is not frequent in work, and is suitable for places requiring simple structure, small volume and low cost. The clutch has good popularization value.

Description

Clutch

Technical field:

The present invention relates to a kind of driving mechanism, particularly a kind of clutch that is used for using on the micro-machine.

Technical background:

Normally used clutch, a kind of is roller type, by the roller carry-over moment, because the raceway on the roller is special-shaped curved, make, detect all difficult, the processing cost height, and owing to be the line contact between raceway and the roller, frictional force is little, skidding appears after the wearing and tearing easily, thereby can not carry-over moment, cause clutch to lose efficacy poor reliability.In addition, roller one-way clutch is because of its structural reason, and it is bigger to take up room.Another kind of friction disk type one-way clutch, the manufacturing process complexity, carry-over moment is limited, and the inconvenience maintenance, seldom uses.For micro motor use occasion such as door lock, mahjong machine, curtain machine, the electronic switching-on mechanism of circuit breaker etc., moment is less demanding, work is not frequent, but claimed structure is simple, volume is little, cost is low, and above method volume is all big, cost is high, and above method is all inapplicable.

Summary of the invention:

In view of the foregoing, the object of the present invention is to provide a kind of with low cost, volume is less, easy processing, is applicable to the clutch that micro motor uses.

Technological scheme of the present invention is following realization: the present invention is made of motor 1, clutch overcoat 3, ratchet 4, pin 5, spring 6, is fixed with ratchet 4 on the output shaft 2 of motor 1.Circular hole 300 is arranged in the clutch overcoat 3, and ratchet 4 is enclosed in the circular hole 300; Clutch overcoat 3 inner transverse positions have slotted eye 301, and slotted eye communicates with circular hole 300, are placed with pin 5, spring 6 in the slotted eye 301, and spring 6 withstands pin 5.The clutch overcoat also can be by loam cake 33, middle sheet 32, bottom 31 is superimposed successively constitutes, and middle sheet 32 lateral attitudes have elongated slot.

Description of drawings:

Fig. 1 erection drawing of the present invention

The sectional view of Fig. 2 clutch overcoat of the present invention

Fig. 3 fundamental diagram of the present invention

Fig. 4 ratchet schematic representation of the present invention

Fig. 5 enforcement schematic diagram of the present invention

Among the figure:

Sheet 33-loam cake among the 1-motor 2-output shaft 3-clutch overcoat 4-ratchet 5-pin 6-spring 7-screw 2-300-circular hole 301-slotted eye 41 ratchet 42-back of tooth 43-flank of tooth 31-bottom 32-

Specific embodiments

Describe principle of the present invention in detail below in conjunction with embodiment

Referring to Fig. 1

The present invention is made of motor 1, clutch overcoat 3, ratchet 4, pin 5, spring 6, is fixed with ratchet 4 on the output shaft 2 of motor 1.

Referring to Fig. 2

Circular hole 300 is arranged in the clutch overcoat 3, and clutch overcoat 3 inner transverse positions have slotted eye 301, and slotted eye communicates with circular hole 300, in conjunction with Fig. 1 as can be known ratchet 4 be enclosed in the circular hole 300.

Referring to Fig. 3, Fig. 4

Be placed with pin 5, spring 6, spring in the slotted eye 301 and withstand pin 5.When motor 1 turned clockwise, the output shaft 2 of motor 1 drove ratchet 4 and rotates, and ratchet 41 is arranged on the ratchet 4, and the flank of tooth 43 of ratchet 41 is planes, and the back of tooth 42 is arc surfaces.In the time of near the flank of tooth 43 of ratchet 41 forwards slotted eye 301 to, pin 5 is extruded by spring 6, and the flank of tooth 43 of the ratchet 41 of ratchet 4 is pushed down pin 5, rotates thereby drive whole clutch overcoat 3.

When motor 1 stops operating and clutch overcoat 3 when clockwise rotating, the flank of tooth 43 of the ratchet 41 of ratchet 5 separates with pin 5, and in whole rotation process, the flank of tooth 43 of the ratchet 41 of ratchet 5 contacts never with pin.Pin 5 only contacts with the arc surface of ratchet, the back of tooth 42 of ratchet 41, and pin 5 is pressed into slotted eye 301, skids between pin 5 and the ratchet 4.3 of the clutch overcoat rotation is not subjected to the influence of motor 1 stall like this, reaches the purpose of clutch.

Referring to Fig. 5

For the ease of processing, clutch overcoat 3 can be by loam cake 33, middle sheet 32, bottom 31 is superimposed successively constitutes.

As shown in Figure 3, middle sheet 32 lateral attitudes have elongated slot.And loam cake, bottom cutting elongated groove not.When the three was superimposed together, the elongated slot of middle sheet 32 just became slotted eye.Loam cake, middle sheet, bottom only need punching press to produce like this, the lower and easy processing of cost.Screw 7 is fixed on ratchet 4 on the output shaft 2 of motor 1, prevents that ratchet 4 from skidding, and makes work more reliable.

The present invention only just realizes the clutch mechanism of micro motor with 3-5 part, belong to domestic initiation, and structure is very simple, easy to process, with low cost, reliable operation, has vast market prospect.

Claims

1. a clutch is made of motor (1), clutch overcoat (3), ratchet (4), pin (5), spring (6), it is characterized in that:

Be fixed with ratchet (4) on the output shaft (2) of motor (1);

Circular hole (300) is arranged in the clutch overcoat (3), and ratchet (4) is enclosed in the circular hole (300);

Clutch overcoat (3) inner transverse position has slotted eye (301), and slotted eye communicates with circular hole (300), is placed with pin (5), spring (6) in the slotted eye (301), and spring (6) withstands pin (5).

2. clutch according to claim 1 is characterized in that: described clutch overcoat (3) can be by loam cake (33), middle sheet (32), the superimposed successively formation of bottom (31), and middle sheet (32) lateral attitude has elongated slot.