CN2263656Y

CN2263656Y - Absorber

Info

Publication number: CN2263656Y
Application number: CN 96227502
Authority: CN
Inventors: 许建民
Original assignee: JI'NAN LAMP DECORATION GENERAL CO
Current assignee: JI'NAN LAMP DECORATION GENERAL CO
Priority date: 1996-04-01
Filing date: 1996-04-01
Publication date: 1997-10-01
Anticipated expiration: 2006-04-01

Abstract

The utility model relates to an absorber which belongs to the absorber of a rotary body, particularly the absorber of a rotary cylinder body of a washing machine. The absorber comprises an outer cylinder [6], an inner cylinder [3], friction blocks and a fixing device. The absorber is characterized in that the outer wall of the inner cylinder is matched with the inner wall of the outer cylinder [6]; a radial hole [4] is arranged on the middle part of the inner cylinder [3]; a concave groove is arranged on the end of the inner cylinder [3]; friction bars [5]are arranged in the concave groove; an axial pipe [8] is arranged between the radial hole [4] and the end of the concave groove. The utility model with the advantages of small size, light weight, less noise, simple structure and low cost is suitable for high speed operations of the washing machine.

Description

A kind of shock absorber

A kind of shock absorber belongs to the shock absorber of rotary body, particularly a kind of shock absorber of washing machine rotary cylinder-block.

Before the applying date, employed damper for washing machine is made up of urceolus, inner core, friction block and fixture, mainly utilize spring damping, friction block is arranged on asbestos, the elastomeric material on the urceolus, exist shortcomings such as volume is big, weight is big, noise is big, complex structure, and, obviously reduce at 600 rev/mins of situation lower spring damping effects that run up, the running that the incompatibility washing machine is high-speed, because the problem of friction block material, after long period running, its deattenuation does not have the effect of friction damping.

The purpose of this utility model provides that a kind of volume is little, in light weight, noise is little, simple in structure, and adapt to the shock absorber of the high-speed running of washing machine.

The utility model is realized in the following way: a kind of shock absorber, comprise urceolus, inner core, friction block and fixture, it is characterized in that the fixture inner tank theca matches with outer tube inner wall, a radial hole is established at the inner core middle part, a recessed groove is established in the termination of inner core, fricting strip is set in the recessed groove, establishes an axial hole between radial hole and the recessed groove termination.The gap that the fixture inner tank theca matches with outer tube inner wall is not more than 2mm, and the purpose that a recessed groove is established in the termination of inner core is the fixed friction bar, and radial hole communicates with axial hole, and its objective is increases air damping and reduce the tube cavity temperature.

In pipe for the purpose of pilot hole that has reinforcement is an economical with materials, reduce cost, gain in strength.

Urceolus closes up, and its objective is to prevent that inner core from detaching urceolus, reduces fit clearance, reduces the mechanical collision noise.

Fixture is made up of retainer ring and support thereof, one of them support is fixed on washing machine shell, another support is fixed on the cylinder, establish the rubber ring pad in the retainer ring, establish a stiffening ring in the rubber ring pad, its objective is cushioning effect, reduce noise, reduce to vibrate infringement, play cushioning effect, life-saving shock absorber.

Fricting strip its objective is the increasing coefficient of friction for the polyurethane foamed plastic, increases the frictional force between inside and outside barrel.Because the polyurethane foamed plastic can not produce shiny surface in the use when long-term the use, its coefficient of friction is relatively stable.

Prove by experiment: the diameter at inner core is 17.7mm, and the fricting strip magnitude of interference is 2% o'clock, is that 100mm is an example with urceolus chamber length, and width is 8% o'clock, produces the frictional force of 50N; Width is 11% o'clock, produces the frictional force of 70N; Width is 30% o'clock, produces the frictional force of 100N.

Diameter at inner core is 17.7mm, and the magnitude of interference of fricting strip is 4% o'clock, is that 100mm is an example with urceolus chamber length, and width is 8% o'clock, produces the frictional force of 80N; Width is 11% o'clock, produces the frictional force of 100N; Width is 30% o'clock, produces the frictional force of 160N.

Diameter at inner core is 17.7mm, and the fricting strip magnitude of interference is 10% o'clock, is that 100mm is an example with urceolus chamber length, and width is 8% o'clock, produces the frictional force of 160N; Width is 11% o'clock, produces the frictional force of 190N; Width is 30% o'clock, produces the frictional force of 300N.

By said structure the utlity model has that volume is little, in light weight, noise is little, simple in structure, cost is low, and adapts to the advantage of the high-speed running of washing machine.

Below by accompanying drawing the utility model is further described:

Fig. 1, be structural representation of the present utility model;

Fig. 2, be inner core of the present utility model termination schematic diagram.

Embodiment 1, a kind of shock absorber, comprise urceolus [6], inner core [3], friction block and fixture, it is characterized in that fixture is made up of retainer ring and support thereof, one of them support is fixed on washing machine shell, another support is fixed on the cylinder, establish the rubber ring pad in the retainer ring, establish a stiffening ring [1] in the rubber ring pad [2], inner core [3] outer wall matches with urceolus [6] inwall, its gap is 0.5mm, inner core [3] is for having the guide pipe of reinforcement, a radial hole [4] is established at inner core [3] middle part, a recessed groove is established in the termination of inner core [3], and it is polyurethane foamed plastic fricting strip [5] that a material is set in the recessed groove, establishes a tube axial [8] between radial hole [4] and the recessed groove termination.

Embodiment 2, as embodiment 1 described the utility model, urceolus [6] closes up.

Claims

1, a kind of shock absorber, comprise urceolus [6], inner core [3], friction block and fixture, it is characterized in that inner core [3] outer wall matches with urceolus [6] inwall, a radial hole [4] is established at inner core [3] middle part, a recessed groove is established in the termination of inner core [3], fricting strip [5] is set in the recessed groove, establishes a tube axial [8] between radial hole [4] and the recessed groove termination.

2, a kind of shock absorber as claimed in claim 1, pipe is for having the guide pipe of reinforcement in it is characterized in that.

3, a kind of shock absorber as claimed in claim 1 is characterized in that urceolus [6] closes up.

4, a kind of shock absorber as claimed in claim 1 is characterized in that fixture is a retainer ring, establishes rubber ring pad [2] in the retainer ring, establishes a stiffening ring [1] in the rubber ring pad [2].

5, a kind of shock absorber as claimed in claim 1 is characterized in that fricting strip [5] is the polyurethane foamed plastic.

6, a kind of shock absorber as claimed in claim 1 is characterized in that fricting strip [5] is 8～30% of urceolus [a 6] chamber length for width

7, a kind of shock absorber as claimed in claim 1, the magnitude of interference that it is characterized in that fricting strip [5] are 2～10% of inner core [3] external diameter.