CN202100716U

CN202100716U - Double-seal oil seal

Info

Publication number: CN202100716U
Application number: CN2011202047502U
Authority: CN
Inventors: 王玉国; 王志明
Original assignee: Changan Automobile Group Co Ltd
Current assignee: Changan Automobile Group Co Ltd; Hebei Changan Automobile Co Ltd
Priority date: 2011-06-17
Filing date: 2011-06-17
Publication date: 2012-01-04
Anticipated expiration: 2021-06-17

Abstract

The utility model discloses a double-seal oil seal which comprises a support frame, an elastic inner cylinder, an upper-layer seal ring and a lower-layer seal ring, wherein the support frame is an elastomeric cylinder which is sheathed outside a steel ring; the inner cylinder with a V-shaped cross section is connected to the interior of the elastomeric cylinder towards the center; a downward extending part of the inner cylinder is connected with the upper-layer ring-shaped seal ring and the lower-layer ring-shaped seal ring; the cross section of the upper-layer seal ring is an upward bulge; the cross section of the lower-layer seal ring is a bulge extending towards the center, and the diameter of the lower-layer seal ring is smaller than that of the upper-layer seal ring; and a spiral spring coil is mounted at the back of the lower-layer seal ring. When the oil seal is mounted on a bearing check ring, the two layers of seal rings both are clamped on the outer surface of the bearing check ring, and since the diameter of the lower-layer seal ring is smaller than that of the upper-layer seal ring and the spring has a tightening function, the double-seal effect is guaranteed.

Description

A kind of oil sealing of double seal

Technical field

The utility model relates to a kind of oil sealing, especially relates to a kind of oil sealing of double seal.

Background technique

Conventional oil is enclosed in the situation that poor sealing takes place in the using process easily, and its reason has the product raw material problems, and product elderization service time etc. also have the product specification factor.

The model utility content

The utility model technical problem to be solved provides a kind of oil sealing of double seal, avoids the situation of poor sealing.

For solving the problems of the technologies described above, the technological scheme that the utility model is taked is: a kind of oil sealing of double seal comprises supporting frame, elasticity inner core, upper strata seal ring and lower floor's seal ring; Support frame as described above is the elastic material tube that is wrapped in rigidity circle outside; Said elastic material tube inside is connected with the inner core that the cross section is the V font towards central direction; The downward extending part of said inner core is connected with two-layer O-ring seal up and down; The cross section of said upper strata seal ring is towards raising; The cross section of said lower floor seal ring is less than the upper strata seal ring towards central protuberance and its diameter.

The further improvement that the utility model is done is: a circle helical spring is installed at the back of lower floor's seal ring.

Adopt the beneficial effect that technique scheme produced to be: the upper strata sealing of the utility model encloses first road seal action, and the diameter of lower floor's seal ring is less than the upper strata seal ring and have a circle helical spring to guarantee the double seal effect behind.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.

Fig. 1 is the sectional view under the nature of the utility model.

Fig. 2 is the sectional view of the utility model under user mode.

As depicted in figs. 1 and 2: 1 supporting frame, 2 elasticity inner cores, 3 upper strata seal rings, 4 lower floor's seal rings, 5 rigidity circles, 6 springs, 7 end rings.

Embodiment

Combine Fig. 1 and Fig. 2 that manipulating of the utility model further specified: a kind of oil sealing of double seal comprises supporting frame 1, elasticity inner core 2, upper strata seal ring 3 and lower floor's seal ring 4 at present; Support frame as described above 1 is for being wrapped in the elastic material tube of rigidity circle 5 outsides; Said elastic material tube inside is connected with the inner core 2 that the cross section is the V font towards central direction; Said inner core 2 downward extending parts are connected with two-layer O-ring seal up and down; The cross section of said upper strata seal ring 3 is towards raising; The cross section of said lower floor seal ring 4 is less than upper strata seal ring 3 towards central protuberance and its diameter; One circle helical spring 6 is installed at the back of said lower floor seal ring 4.When oil sealing is installed in 7 last times of end ring, two-layer seal ring all is stuck in the appearance of end ring 7, because lower floor's seal ring 4 diameters less than upper strata seal ring 3 and the fastening effect of spring 6 is arranged, have guaranteed the double seal effect.

Claims

1. the oil sealing of a double seal is characterized in that: comprise supporting frame (1), elasticity inner core (2), upper strata seal ring (3) and lower floor's seal ring (4); Support frame as described above (1) is for being wrapped in the elastic material tube outside the rigidity circle (5); Said elastic material tube inside is connected with the inner core that the cross section is the V font (2) towards central direction; Said inner core (2) extending part downwards is connected with two-layer O-ring seal up and down; The cross section of said upper strata seal ring (3) is towards raising; The cross section of said lower floor seal ring (4) is less than upper strata seal ring (4) towards central protuberance and its diameter.

2. the oil sealing of a kind of double seal according to claim 1 is characterized in that: a circle helical spring (6) is installed at the back of said lower floor seal ring (4).