CN2508059Y

CN2508059Y - Sensing cam transmission

Info

Publication number: CN2508059Y
Application number: CN 01255145
Authority: CN
Inventors: 钱辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-05
Filing date: 2001-12-05
Publication date: 2002-08-28
Anticipated expiration: 2011-12-05

Abstract

The utility model relates to a cam driving mechanism which transfers power with the mutual induction among magnetic patches, comprising a cam which is equipped with at least two wheel disks and a rotary arm, wherein the outer edge is covered with magnet rings which have consistent wheel disk curves, and the magnet rings of the adjacent wheel disks are faced with unlike pole surfaces, magnetic patches which are fixed with the end of the rotary arm through mutual induction to drive the rotary arm to move are all symmetrically arranged between the adjacent wheel disks, and the thickness of the magnetic patches is slightly smaller than the distance between wheel disks. The driving mechanism relies on the mutual induction of the magnetic patches with the cam driving the rotary arm to move without contact, thereby not only eliminating the contact wear, improving transferring accuracy, prolonging service life, reducing vibrating and noise, but also eliminating the radial and axial stress of the cam and the rotary arm, increasing inductive surface and enlarging transferring power.

Description

The induction cam drive

Technical field

The utility model relates to a kind of cam drive that interacts transferring power that utilizes between magnetic patch.

Background technique

Known cam drive is to drive the pivoted arm motion by pivoted arm with contacting by cam of cam.Thereby in operation process, because of cam contacts with pivoted arm all the time, wearing and tearing not only can influence working life, and can influence transmission accuracy easily, make transmission instability, easily vibration.And the applicant also once designed a kind of cam drive that interacts transferring power that utilizes between magnetic patch, the characteristics of this mechanism are to adorn magnetic patch on cam and pivoted arm respectively, by interacting between magnetic patch, under the condition that does not have contact, move by the cam driven pivoted arm, though contact wear can be eliminated by this mechanism, increase the service life, owing to have footpath, axial tension between cam and pivoted arm, bearing is easy to wear, and the power loss is bigger.

Summary of the invention

Technical problem to be solved in the utility model is the defective that will overcome above-mentioned prior art, provides a kind of and eliminates footpath, axial stress, the power loss is little, transferring power is big, transmission accuracy is high, the induction cam drive of long service life.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: this induction cam drive, comprise cam and pivoted arm, it is characterized in that described cam has at least two wheel discs, the wheel disc outer rim is coated with the magnet ring consistent with the wheel disc curve, the magnet ring of adjacent wheel disc is relative with the opposite pole face, and between adjacent wheel disc, all being arranged with a magnetic patch that interacts and move with fixing the passing through of pivoted arm arm end with the driving pivoted arm, the thickness of magnetic patch is slightly less than the spacing between wheel disc.Described magnet ring can be made of the wall scroll magnet ring, also can be abutted against mutually by three staggered magnet rings of polarity to form, and magnetic patch places between the middle magnet ring of adjacent wheel disc.

Compared with prior art, advantage of the present utility model is: this driving mechanism relies on interacting between the magnetic patch, under the condition that does not have contact, move by the cam driven pivoted arm, can not only eliminate contact wear, improve transmission accuracy, increase the service life, reduce vibration and noise, need not simultaneously to use return spring, can eliminate footpath, axial stress between cam and pivoted arm, increase sensitive surface, increase transferring power.

Description of drawings

Fig. 1 is the utility model embodiment 1 a structural representation.

Fig. 2 is the axial view of Fig. 1.

Fig. 3 is the utility model embodiment 2 a structural representation.

Fig. 4 is the utility model embodiment 3 a structural representation.

Fig. 5 is the A-A sectional view of Fig. 4.

Fig. 6 is the utility model embodiment 4 a structural representation.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment 1: shown in Fig. 1-2, the cam 1 of this induction cam drive is made of the parallel wheel disc 2 of two middle disjunctors, 2 on the wheel disc spacing of being separated by, the outer rim of wheel disc 2 all is coated with the magnet ring consistent with the roulette profile 4, and two magnet rings are relative with the opposite pole face.Pivoted arm 7 is fixing by bearing pin 8, is fastened with a magnetic patch 5 at the arm end of pivoted arm, and magnetic patch 5 is in the centre of two magnet rings 4, and is relative with the like pole face with magnet ring 4 on the wheel disc, and the thickness of this magnetic patch 5 is slightly less than the spacing between wheel disc.When off working state, magnetic patch 5 will rest on a certain position (zero-bit point) of 4 tops of two magnet rings, and when main shaft 6 runnings, magnetic patch 5 can up and down reciprocatingly move thereby drive pivoted arm 7 along the edge operation of magnet ring 4.The cam 1 and the main shaft 6 of this mechanism can adopt the branch body structure, also can adopt overall structure, and cam and main shaft are made of one.

Embodiment 2: induction cam drive as shown in Figure 3, its structure is identical with embodiment 1 basically, and difference is to constitute the wheel disc 2 number differences of cam, and it adopts plural wheel disc 2, corresponding with it magnetic patch 5 numbers that are fixed on the pivoted arm 7 are also different, and it is consistent with interval 3 numbers of wheel disc.If cam 1 is made of three parallel wheel discs 2, then magnetic patch 5 is two, and respectively between the centre of two wheel discs, and is relative with the like pole face with magnet ring 4 on the wheel disc.Its principle is identical with embodiment 1, and characteristics are that the power transmission is than embodiment's the last 1 because multilayer is responded to.

Embodiment 3, embodiment 4 see Fig. 4-5 and Fig. 6 respectively, induction cam drive shown in these two kinds is respectively to embodiment 1 and embodiment's 2 further improvement, it is coated on magnet ring on the wheel disc and is abutted against mutually by three staggered magnet rings of polarity and forms, the effect of inside and outside two

magnet rings

9,10 is to be used for strengthening preventing to be in 5 derailings of the magnetic patch in the middle of the magnet ring 4 in the middle of two, improves moment and precision.When main shaft 6 runnings, magnetic patch 5 is in the centre of the middle magnet ring 4 of two adjacent wheel discs, and the graviational interaction of magnet ring 4 in the middle of being subjected to is simultaneously followed the orbital motion of magnet ring 4, up and down reciprocatingly moves thereby drive pivoted arm 7.

Claims

1, a kind of induction cam drive, comprise cam (1) and pivoted arm (7), it is characterized in that: described cam (1) has at least two wheel discs (2), wheel disc (2) outer rim is coated with the magnet ring consistent with the wheel disc curve (4), the magnet ring of adjacent wheel disc (4) is relative with the opposite pole face, and between adjacent wheel disc, all being arranged with a magnetic patch (5) that interacts and move with fixing the passing through of pivoted arm arm end with the driving pivoted arm, the thickness of magnetic patch (5) is slightly less than the spacing between wheel disc.

2, induction cam drive as claimed in claim 1 is characterized in that: described magnet ring is abutted against mutually by three staggered magnet rings of polarity (9,4,10) and forms, and magnetic patch (5) places between the middle magnet ring (4) of adjacent wheel disc.