CN208816651U - Oil enveloping structure - Google Patents

Abstract

The utility model provides a kind of oil enveloping structure, it is installed in the cabinet with shaft mounting hole, shaft mounting hole includes the bearing hole for being equipped with bearing, and for the shaft hole that the shaft that is arranged on bearing passes through, and the one side of bearing is close to the inner face of shaft hole.The oil enveloping structure includes ring stopper and axle bumper portion；Ring stopper is located in shaft hole, is set in shaft and holds shaft tightly；Axle bumper portion is extended radially between bearing side and shaft hole inner face by one end of ring stopper along shaft, and is constituted elasticity with bearing side and shaft hole inner face and abutted.The function of adjusting gasket is integrated on oil sealing by the way that axle bumper portion is arranged on oil sealing, while being easily installed, and has preferable sealing effect by oil enveloping structure described in the utility model.

Description

Oil enveloping structure

Technical field

The utility model relates to sealing device technical field, in particular to a kind of oil enveloping structure.

Background technique

As the dynamical system of vehicle, the sealing performance of the interior oils such as such as retarder, gearbox lubrication cabinet is required to get over Come higher.Wherein, it as moving component, is installed on cabinet and is easiest to leak at the position of shaft, need good sealing Performance.Oil sealing is also higher and higher to its performance requirement as the sealing element at shaft and axis hole.Existing oil enveloping structure is usual It is the main lip and shaft holding in oil sealing inner wall setting protrusion, the shaft mounting hole interference press fitting on the shell and cabinet of oil sealing comes Realize sealing.Since the pressure between sealing effect and oil sealing shell and shaft mounting hole inner wall is related, interference is pressed, such as Fruit guarantees to seal by increasing magnitude of interference, and for the machining accuracy of cabinet, the Capability Requirement of installer can be increased considerably. Therefore the situation poor there may be sealing performance using the oil sealing of interference press-fit approach installation.

Utility model content

In view of this, the utility model is directed to a kind of oil enveloping structure, can have good sealing performance.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

A kind of oil enveloping structure is installed in the cabinet with shaft mounting hole；The shaft mounting hole includes being equipped with axis The bearing hole held, and for being arranged in the shaft hole that the shaft of the bearing passes through, and the one side of the bearing is close to described The inner face of shaft hole, the oil enveloping structure include ring stopper and axle bumper portion；The ring stopper is located in the shaft hole, is arranged And hold the shaft tightly；The axle bumper portion is by one end of the ring stopper along the side for extending radially to the bearing of the shaft Between face and the inner face of the shaft hole, and constitutes and abut with the inner face of the side of the bearing and the shaft hole.

Further, the ring stopper is at annular shape, and the inner wall of the outer circumference surface of the ring stopper and the shaft hole Constitute clearance fit.

Further, the ring stopper includes holding the obvolvent portion of the shaft tightly, the patch being bonded with the shaft hole inner wall Conjunction portion, and constitute the interconnecting piece that the obvolvent portion is connected with the sticking part.

Further, the obvolvent portion is annular in shape；It is wedge angle that top is formed on the inner periphery in obvolvent portion described in ring Protrusion, constructs on the excircle in obvolvent portion described in ring fluted, and is equipped in hoop in the groove and holds spring tightly.

Further, the axle bumper portion fits in the bearing outer ring, and the axle bumper portion through it is diagonally disposed, to constitute The relief portion avoided to bearing inner race and bearing ball is connect with the ring stopper.

Further, the interconnecting piece, the sticking part and the relief portion include metallic framework layer, and laying Rubber epidermis in metallic framework layer two sides.

Further, the axle bumper portion includes the metal gasket layer for being connected to the bearing side, and is connected to described The rubber spacer of shaft hole inner face.

Further, the cabinet with shaft mounting hole is any one of speed changer, retarder and gear-box.

It further, further include cyclic annular dustproof lip outwardly extending by the ring stopper, in back taper.

(1) oil enveloping structure described in the utility model holds shaft tightly by ring stopper to realize between oil sealing and shaft Sealing, is abutted by axle bumper portion with bearing side and shaft hole inner end surface elastic, is realized close between oil sealing and shaft hole inner wall Envelope.Since the elastic abutting force between axle bumper portion and bearing side and shaft inner face is adjustable, and installation difficulty is influenced Less, therefore compared to the mode of interference press fitting, preferable sealing effect can be obtained by increasing the clamping force to axle bumper portion.

(2) ring stopper and shaft hole inner wall clearance fit, convenient for the installation of oil sealing.

(3) ring stopper is made of the obvolvent portion of holding shaft and the sticking part being bonded with shaft hole, obvolvent portion and patch Conjunction portion is connected by interconnecting piece.Obvolvent portion and sticking part can be easily installed during installation to contract.

(4) setting of protrusion and holding spring can guarantee the sealing performance between shaft and oil enveloping structure.

(5) axle bumper portion fits in bearing outer ring, prevents bearing inner race and ball from contacting with axial gap adjustment section, forms rolling Dynamic friction and cause to wear.

(6) setting of metallic framework layer and rubber epidermis can have while keeping intensity by Elastic Contact Good sealing performance.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.? In attached drawing:

Fig. 1 is oil enveloping structure overall co-ordination structural schematic diagram on cabinet described in the utility model embodiment；

Fig. 2 is the enlarged drawing in Fig. 1 at A；

Fig. 3 is the overall schematic of oil enveloping structure described in the utility model embodiment.

Description of symbols:

1- cabinet, 11- bearing hole, 12- shaft hole, 2- bearing, 3- shaft, 4- ring stopper, 41- obvolvent portion, 411- protrusion, 412- groove, 413- hold spring, 42- sticking part, 43- interconnecting piece, 44- metallic framework layer, 45- rubber epidermis, 5- axle bumper tightly Portion, 51- relief portion, 52- metal gasket layer, 53- rubber spacer, 6- dustproof lip.

Specific embodiment

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

The present embodiment is related to a kind of oil enveloping structure, is installed in the cabinet 1 with shaft mounting hole；And shaft mounting hole Bearing hole 11 including being equipped with bearing 2, and the shaft hole 12 that the shaft 3 for being arranged on bearing 2 passes through, and bearing 2 Inner face of the one side close to shaft hole 12.As depicted in figs. 1 and 2, which includes ring stopper 4 and axle bumper portion 5；Ring gear Portion 4 is located in shaft hole 12, is set in shaft 3 and holds shaft 3 tightly；Axle bumper portion 5 by ring stopper 4 one end along shaft 3 diameter To between 12 inner face of side and shaft hole for extending to bearing 2, and with the equal structure of the inner face of the side of bearing 2 and shaft hole 12 At abutting.

The present embodiment middle ring stopper 4 is annular in shape.By in this present embodiment, between 12 inner wall of oil enveloping structure and shaft hole Sealing is realized by the axle bumper portion 5 being located between 12 inner face of 2 side of bearing and shaft hole.Thus, the excircle of ring stopper 4 It is preferably small―gap suture cooperation between 12 inner wall of shaft hole, while can be that axle bumper portion 5 provides positioning, is also convenient for installing.

The specific structure is shown in FIG. 3 for the present embodiment middle ring stopper 4, the obvolvent portion 41 including holding shaft 3 tightly, with shaft hole The sticking part 42 of 12 inner walls fitting, and constitute the interconnecting piece 43 that obvolvent portion 41 is connected with 42 one end of sticking part.It uses in obvolvent portion 41 To constitute the sealing to shaft 3 and oil sealing junction.In the present embodiment, obvolvent portion 41 is annular in shape, encircles the inner circle in conjunction portion 41 The protrusion 411 that top is wedge angle is formed on week.It encircles on the excircle in conjunction portion 41 and is arranged fluted 412, and in the groove 412 Interior hoop, which is equipped with, holds spring 413 tightly.By above-mentioned setting, under the action of holding spring 413 tightly, with shaft 3 phase is occurring for protrusion 411 It is still able to maintain elastic abutting when to rotation, thus there is good sealing effect.Sticking part 42 is at annular shape in the present embodiment, and Small―gap suture cooperation is specifically constituted with 12 inner wall of shaft hole.

Sticking part 42 and obvolvent portion 41 is arranged in far from one end inside cabinet 1, to prevent oil liquid from fitting in interconnecting piece 43 It is revealed between portion 42 and holding portion.Certainly, sticking part 42 can also be made of one with obvolvent portion 41, simultaneously compared to split settings It only connects at one end, a large amount of material can be wasted.And obvolvent portion 41 and sticking part 42 are separately positioned, during installation, sticking part 42 can reduce oil sealing manufacture permissible accuracy to contract.

In the present embodiment, the structure in axle bumper portion 5 as shown in figure 3, be located in 2 side of bearing and shaft hole 12 inner face it Between.In the process of 1 shell of shaft 3 and cabinet, mismachining tolerance is inevitably generated, makes 2 side of bearing and shaft There are certain gaps between 12 inner face of hole.Gap will lead to the axial float of bearing 2, influence the stability and use of equipment Service life.It is in the prior art usually to add adjustment gasket between 12 inner face of 2 side of bearing and shaft hole, between preventing Gap.And the axle bumper portion 5 in the present embodiment can also prevent the oil liquid in cabinet 1 from entering while having the function of adjusting gasket The side wall of shaft hole 12 avoids revealing.And side due to bearing 2 and 12 inner face of shaft hole are to the clamping force in axle bumper portion 5 It can be adjusted and be increased by modes such as the thickness in increase axle bumper portion 5, while have no effect on installation difficulty.And oil sealing in the prior art With the mode of axis hole interference press fitting, if increasing clamping force by increasing oil sealing diameter, installation difficulty can be increased considerably.And it presss from both sides Clamp force directly affects sealing effect again, and therefore, the setting in the axle bumper portion 5 in the present embodiment can also obtain while easy for installation Obtain preferable sealing effect.And the function of adjusting gasket is integrated on oil sealing, the number of total part can be also reduced, is also facilitated Tissue production.

Since 2 inner ring of bearing and 2 ball of bearing can rotate, as shown in Fig. 2, the present embodiment axis stopper 5 fittings In the outer ring of bearing 2, prevent from wearing with 2 inner ring activity friction of bearing.For this purpose, in the present embodiment be provided with it is diagonally disposed, Axle bumper portion 5 and sticking part 42 is set to be connected as one to constitute the relief portion 51 avoided to 2 inner ring of bearing and 2 ball of bearing Body.

In the present embodiment, interconnecting piece 43, sticking part 42 and relief portion 51 include metallic framework layer 44, and are laid in The rubber epidermis 45 of 44 two sides of metallic framework layer.While providing intensity by metallic framework layer 44, each rubber epidermis Layer 45 is Elastic Contact with the position contacted, to provide preferable sealing performance.And axle bumper portion 5 then includes fitting in outside bearing 2 Enclose the metal gasket layer 52 of side wall, and the rubber spacer 53 of fitting 1 outer casing inner wall of cabinet.Because bearing 2 turns with shaft 3 It is dynamic, can have certain vibration, be contacted according to rubber with bearing 2, then may rapid wear, influence service life and close Sealing property.

And external dust, impurity etc. are attached to shaft 3, and being rotated into inside cabinet 1 with shaft 3 in order to prevent. In the present embodiment, as shown in Figures 2 and 3, in the outside of interconnecting piece 43, be additionally provided with from interconnecting piece 43 close to one end of shaft 3 to Outer extension, in back taper, cricoid dustproof lip 6.

Cabinet 1 in the present embodiment with shaft mounting hole can be any one of speed changer, retarder and gear-box.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims (9)

1. a kind of oil enveloping structure is installed on the cabinet with shaft mounting hole (1)；The shaft mounting hole includes being equipped with axis Hold the bearing hole (11) of (2), and the shaft hole (12) that the shaft (3) for being arranged on the bearing (2) passes through, and the axis The one side of (2) is held close to the inner face of the shaft hole (12), it is characterised in that: the oil enveloping structure includes ring stopper (4) With axle bumper portion (5)；The ring stopper (4) is located in the shaft hole (12), is sheathed on the shaft (3) and holds described turn tightly Axis (3)；The axle bumper portion (5) extends radially to the bearing (2) along the shaft (3) by one end of the ring stopper (4) Side and the shaft hole (12) inner face between, and it is interior with the side of the bearing (2) and the shaft hole (12) End face constitutes abutting.

2. oil enveloping structure according to claim 1, it is characterised in that: the ring stopper (4) is at annular shape, and the ring is kept off The outer circumference surface in portion (4) and the inner wall of the shaft hole (12) constitute clearance fit.

3. oil enveloping structure according to claim 1, it is characterised in that: the ring stopper (4) includes holding the shaft (3) tightly Obvolvent portion (41), the sticking part (42) being bonded with the shaft hole (12) inner wall, and constitute the obvolvent portion (41) and institute State the interconnecting piece (43) of sticking part (42) connection.

4. oil enveloping structure according to claim 3, it is characterised in that: the obvolvent portion (41) is annular in shape；It is embraced described in ring It is formed with the protrusion (411) that top is wedge angle on the inner periphery in conjunction portion (41), is constructed on the excircle in obvolvent portion (41) described in ring Fluted (412), and be equipped in hoop in the groove (412) and hold spring (413) tightly.

5. oil enveloping structure according to claim 3, it is characterised in that: the axle bumper portion (5) fits in the bearing (2) Outer ring, and the axle bumper portion (5) is through diagonally disposed, keeping away with the ball of the inner ring of structure matched bearings (2) and bearing (2) evacuation Portion (51) is allowed to connect with the ring stopper (4).

6. oil enveloping structure according to claim 5, it is characterised in that: the interconnecting piece (43), the sticking part (42) with And the relief portion (51) includes the metallic framework layer (44) positioned at middle layer, and is laid in the metallic framework layer (44) The rubber epidermis (45) of two sides.

7. oil enveloping structure according to claim 6, it is characterised in that: the axle bumper portion (5) includes being connected to the bearing (2) side, the metal gasket layer (52) that is connect with the metallic framework layer (44), and be connected in the shaft hole (12) The rubber spacer (53) of end face.

8. oil enveloping structure according to claim 1, it is characterised in that: the cabinet (1) with shaft mounting hole is to become Any one of fast device, retarder and gear-box.

9. oil enveloping structure according to any one of claim 1 to 8, it is characterised in that: further include by the ring stopper (4) Cyclic annular dustproof lip (6) outwardly extending, in back taper.