CN2565667Y

CN2565667Y - Internal-external dust-proof transverse hook type dust-proof cover

Info

Publication number: CN2565667Y
Application number: CN 02216864
Authority: CN
Inventors: 高天安; 顾慧芳
Original assignee: Wanxiang Qianchao Co Ltd
Current assignee: Wanxiang Qianchao Co Ltd
Priority date: 2002-04-15
Filing date: 2002-04-15
Publication date: 2003-08-13
Anticipated expiration: 2012-04-15

Abstract

The utility model discloses an inner-outer dustproof transverse hook type dustproof cover. A matching surface of the inner side of the inner-outer dustproof transverse hook type dustproof cover and an axle journal of a cross axle is provided with a circular arc surface which is matched with the matching surface; the inner wall at the outer side of the dustproof cover is provided with an inner convex transverse hook 7 which is matched with an outer convex circular arc surface of an oil sealing framework, and an inclined plane which is matched with an outer ring. Because the matching surface of the inner side of the dustproof cover and the axle journal of a cross axle forms the circular arc surface which is matched with the matching surface, the inner convex transverse hook on the inner wall at the outer side of the dustproof cover and the outer convex circular arc surface of the oil sealing framework are pressed in backward directions, and meanwhile, the thin outer wall of the dustproof cover is pressed and stuck on the outer ring. The matching structure of the dustproof cover is reasonable in theory and feasible by test proving. The utility model has good dust prevention and waterproofness.

Description

Inside and outside antisoiling band transverse hook type dust boot

Technical field

The utility model relates to a kind of inside and outside antisoiling horizontal type dust boot that colludes of being with.

Background technology

Dust boot, promptly product in use this part play and prevent that dust, mud from entering product inside, destroy the part of part result of use.The general structure that adopts as shown in Figure 1 before the dust boot that in universal-joint, uses.This structure dust boot circular arc boss and outer ring arc groove free-running fit, interior transverse plane and trunnion journal interference fit.Product this structure dust boot under the condition of service of low speed, underloading can play certain dustproof effect.But because center cross and dust boot fitting surface are plane contact, so axle journal, root and the end face of dust boot and center cross can not be accomplished good sealing effectiveness, be again free-running fit between outer ring and the dust boot simultaneously, so at a high speed, heavy duty and extraneous usage condition be abominable, this structure dust boot can not play good dustproof effect under the more situation of dust, mud.Along with expanding economy, automobile is not only galloped on express highway, also crosses over mountain after mountain simultaneously.So its dustproof requirement is also day by day improved.Simultaneously universal-joint also is used for the seat transport instrument of running at a high speed such as motorboat, and this not only requires it that dustproof effect is arranged, and also requires it that waterproof action is arranged simultaneously.Still design the dust boot of this dustproof and waterproof effect to adapt to the needs of the times.

Summary of the invention

The purpose of this utility model provides a kind of inside and outside antisoiling band transverse hook type dust boot.

Inside and outside antisoiling band transverse hook type dust boot is inboard to be provided with associated arc surface with the trunnion journal fitting surface, and dust boot outside inwall is provided with interior inner prominence horizontal hook that matches with the outer convex arc surface of oil tight skeleton and the inclined-plane that matches with the outer ring.

Make associated arc surface because dust boot is inboard with the trunnion journal fitting surface, the interior inner prominence horizontal hook of dust boot outside inwall oppositely is pressed into the outer convex arc surface of oil tight skeleton, and the outer wall that approaches of dust boot overlays on the outer ring simultaneously.The dust boot of this kind fit structure is not only reasonable in theory, and feasible through evidence.Dustproof and waterproof is made good use of.

Description of drawings

Fig. 1 is the fit structure scheme drawing of traditional dust boot and center cross, outer ring;

Fig. 2 is traditional dust cover structure scheme drawing;

Fig. 3 be dust boot of the present utility model and center cross, outer ring, the fit structure scheme drawing;

Fig. 4 dust cover structure scheme drawing of the present utility model.

Outer ring 1 among the figure, oil sealing 2, dust boot 3, center cross 4, the inclined-plane 5 that matches with the outer ring, horizontal hook 6, the arc surface 7 that cooperates with center cross.

The specific embodiment

Dust boot of the present utility model is inboard to be provided with associated arc surface 7 with the trunnion journal fitting surface, and dust boot outside inwall is provided with interior inner prominence horizontal hook 6 that matches with the outer convex arc surface of oil tight skeleton and the inclined-plane 5 that matches with the outer ring.

As shown in the figure.The dustproof and waterproof effect that the utility model can play mainly by following some reach.(1) center cross and dust boot cooperation place, the accurate interference fit of the interior circular arc R of external arc R by dust boot and center cross.Center cross mating surfaces roughness is Ra1.6 simultaneously, makes center cross and dust boot in use not have relative motion, so play good dustproof and waterproof effect.(2) the horizontal hook of dust boot outside inwall must be pressed into the evagination circular arc of skeleton earlier when it is pressed into bearing.Though both dust boot and oil tight skeleton outer wall were free-running fit, and relative motion is in use arranged, certain dustproof and waterproof effect is also played in oppositely being pressed into of its horizontal hook and skeleton circular arc.(3) though relative motion is in use arranged between dust boot and the outer ring.But because dust boot cooperates with the outer ring is the inclined-plane cooperation, and dust boot cooperation wall is thinner, overlays on the inclined-plane, outer ring, so also play good dustproof and waterproof effect.

Claims

1. antisoilingly inside and outside one kind be with the horizontal type dust boot that colludes, it is characterized in that: dust boot is inboard to be provided with associated arc surface [7] with the trunnion journal fitting surface, and dust boot outside inwall is provided with interior inner prominence horizontal hook [6] that matches with the outer convex arc surface of oil tight skeleton and the inclined-plane [5] that matches with the outer ring.