CN2524016Y

CN2524016Y - Annual oil seal with abnormal section

Info

Publication number: CN2524016Y
Application number: CN 02215003
Authority: CN
Inventors: 陈文昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-01-04
Filing date: 2002-01-04
Publication date: 2002-12-04
Anticipated expiration: 2012-01-04

Abstract

The utility model relates to an O shape oil seal with abnormal section which is positioned in the ring groove of the inner wall of the hollow pipe. The utility model is characterized in that the section of the oil seal is a * shape and the protruding point and the core axis are mini contacted; the utility model can form a sealing assisting lip effect when repeatedly moving in beeline in the pipe, can dispatch the twist force of the oil seal in repeatedly displacement to reduce the breaking situation of the oil seal caused by deformation and lengthen the service life of the oil seal.

Description

O type ring oil sealing with Mi Zixing section

Technical field

The relevant a kind of oil sealing of the utility model, particularly relevant a kind of O type ring oil sealing.

Background technique

Economic growth drives the prosperity of industry, in order to pursue the going concern of enterprise, the just essential competitive ability that promotes institute of enterprise sell goods, and impel each manufacturer to drop on the manpower and the research and development of expense what of writing, attract Consumer's purchase with the function of promoting product, enlarge the occupancy in market, generally speaking, concerning wearing with the body that can make linear type shift reciprocately mandrel, in order to reach the sealing of body, all be to establish with recessed annular groove at the inwall of body, plug is established with O type ring in the what annular groove again, and can be the effect that close-fitting is obtained sealing by O type ring and mandrel.Existing O type ring 1 as shown in Figure 1, its section is circular ring circle body, form handing-over by point of contact the highest in the middle of its side face 11 and mandrel, and this point of contact 11 forms one whole contact state through the mandrel extruding with mandrel, reach the function of sealing, by what O type ring 1 by location that annular groove limits, therefore when mandrel when making the shift reciprocately of linear type, by contacting for the face of ring-type between the point of contact 11 of what O type ring 1 and mandrel, then under the mandrel shift reciprocately, under the bigger situation of surface of contact, even be the motion of a low speed, this outstanding point of contact 11 is formed reciprocal pushing force, also can produce one forces O shape to encircle the strength of 1 torsional deflection, point of contact 11 is being subjected under the continuous torsional deflection power, be easy to and cause fracture because of reversing, cause 1 forfeiture of O type ring to fall the function of sealing, could be continued motion and must stop motion change O type ring 1 Hou, this situation obviously can make work pause, cause the prolongation of operating time, and manufacture cost is increased, in order to improve the inevitable shortcoming that O type ring 1 this structure is caused, so there is the oil sealing dealer to develop the oil seal washer 2 of the approximate X-shaped of section as shown in Figure 2, the centre of its side face is an invaginated type, and make its dual-side be outstanding point of contact 21, that is to say, this X-shaped oil seal washer 2 is with the point of contact 21 of two ring-types and contacting of 2 of mandrel formation, by increasing the such structure of point of contact 21, at mandrel is when doing the motion of low speed shift reciprocately, can disperse mandrel linear type shift reciprocately to add the warping force of all whats on it, reducing X-shaped oil seal washer 2 upset takes place causes the situation that ruptures, fall sealing to avoid forfeiture, and the O type ring 1 that can have circle round body now prolongs the life-span of using, but when mandrel carries out high-speed motion, still can cause X-shaped oil seal washer 2 that the phenomenon of upset takes place, and make X-shaped oil seal washer 2 use a period of time Hou, the disadvantage that can rupture causes the forfeiture of sealing function equally.The scheme of oil sealing breakage problem when the oil sealing dealer never can propose effectively to solve the mandrel high-speed motion, therefore addressing this problem is the current problem extremely to be overcome of dealer.

The model utility content

The purpose of this utility model is to provide a kind of O type ring oil sealing, and it has good motion sealing, reduce the oil sealing warping force and reduce oil sealing and cause the possibility that ruptures because of distortion, thereby prolongs the working life of oil sealing.

For achieving the above object, of the present utility modelly provide a kind of O type ring oil sealing with Mi Zixing section, its plug sleeve is in the annular groove place of hollow tube inwall, it is characterized in that, the section of oil sealing is approximately a Mi Zixing, include three projecting points on the ring side face that it contacts with mandrel, wherein two projecting points are positioned at two sides and can contact with mandrel, and middle projecting point is a little state of contact with the mandrel that wears in the what pipe, and can when the mandrel in the pipe is done the shift reciprocately motion of straight line, form the auxiliary lip of an increase sealing.

By what in recessed place form the projecting point of some micro-protuberance shapes, when projecting point and mandrel are in a little contact condition, and can make projecting point form the effect of an auxiliary lip, thereby improve the performance of sealing, simultaneously also because of being formed with projecting point, make the oil seal washer of the utility model rice type be contacting of three rings with mandrel, because middle projecting point is to be a little contact condition with mandrel, therefore can't form resistance to the linear reciprocation displacement of mandrel, simultaneously mandrel straight-line displacement campaign can also be applied what warping force that oil sealing produces is disperseed, like this, even mandrel is in the state of high-speed motion, also can avoid meter flop phenomenon of type oil seal washer effectively, and can be under sealing improves, the drawback that the distortion of avoiding again overturning causes rupturing takes place, thereby prolongs the life-span of using and can prevent the forfeiture of sealing function.

Understand the purpose of this utility model, characteristics and advantage for clearer, preferred embodiment of the present utility model is elaborated below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is the sectional view of existing O type ring oil sealing;

Fig. 2 is the sectional view of existing X type oil seal washer;

Fig. 3 is the sectional view of the utility model one preferred embodiment.

Embodiment

See also sectional view of the present utility model shown in Figure 3, the section that characteristics with oil seal washer 3 of Mi Zixing section of the present utility model are oil sealings forms an approximate Mi Zixing, also promptly be formed with mandrel (not shown) contacted than the outstanding point of contact 31 except dual-side, recessed place forms the projecting point 32 of a micro-protuberance in the centre, and this projecting point 32 is to be a little state of contact with mandrel, and makes the side face of Mi Zixing oil seal washer 3 of the present utility model form 3 contacting with mandrel.

Effect of the present utility model is at what, by what in recessed place form the projecting point 32 of some micro-protuberance shapes, when projecting point 32 and mandrel are in a little contact condition, and can make projecting point 32 form the effect of an auxiliary lip, thereby improve the performance of sealing, simultaneously also because of being formed with projecting point 32, making the oil seal washer 3 of the utility model rice type is to be contacting of three rings with mandrel, because middle projecting point 32 is to be a little contact condition with mandrel, therefore can't form resistance to the linear reciprocation displacement of mandrel, simultaneously mandrel straight-line displacement campaign can also be applied what warping force that oil sealing produces is disperseed, like this, even mandrel is in the state of high-speed motion, also can avoid meter flop phenomenon of type oil seal washer 3 effectively, and can be under sealing improves, the drawback that the distortion of avoiding again overturning causes rupturing takes place, thereby prolongs the life-span of using and can prevent the forfeiture of sealing function.

Claims

1. O type ring oil sealing with Mi Zixing section, its plug sleeve is in the annular groove place of hollow tube inwall, it is characterized in that, the section of oil sealing is approximately a Mi Zixing, include three projecting points on the ring side face that it contacts with mandrel, wherein two projecting points are positioned at two sides and can contact with mandrel, and middle projecting point is a little state of contact with the mandrel that wears in the what pipe, and can be when the mandrel in the pipe is done the shift reciprocately motion of straight line, forming one increases the auxiliary lip of sealing and disperses mandrel to put on the warping force of oil sealing.