CN212318552U

CN212318552U - Hub bearing with pretightning force anti loosening structure

Info

Publication number: CN212318552U
Application number: CN202020475004.6U
Authority: CN
Inventors: 单荣国; 俞水康
Original assignee: Hangzhou Xiaoshan Jinteng Bearing Co ltd
Current assignee: Hangzhou Xiaoshan Jinteng Bearing Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-01-08
Anticipated expiration: 2030-04-03

Abstract

The utility model discloses a wheel hub bearing with pretightning force anti loosening structure, including wheel hub and the inside bearing of embedding wheel hub, wheel hub's front side and the outside that is located the bearing are through hexagon socket head cap screw fixedly connected with oversheath, the oversheath includes flange section and cover section, and the cover section cover is established in the outside of bearing, the surface of cover section and the front side cover that is located the flange section are equipped with the ring gear, the utility model relates to a wheel hub bearing technical field. This wheel hub bearing with pretightning force anti loosening structure sets up the oversheath through the front side at wheel hub, can fix the bearing, avoids its roll-off forward, utilizes the interior tooth's socket of ring gear can pin the outer tooth's socket that is used for the hex bolts surface of fixed oversheath, and then avoids the hex bolts not hard up because of the gyration, has guaranteed the fastness of bearing installation, and utilizes the cooperation of oval turning block and elliptical aperture, can easily pin the ring gear, avoids its landing, and it is convenient quick to fix.

Description

Hub bearing with pretightning force anti loosening structure

Technical Field

The utility model relates to a wheel hub bearing technical field specifically is a wheel hub bearing with pretightning force anti loosening structure.

Background

The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. It should be a support in terms of its function, i.e. literally explained for bearing the shaft, but this is only a part of its function, the support being essentially capable of taking up radial loads. It is also understood that it is intended to fix the shaft. The bearing is fast, easy and excellent, and automatic selection is recorded. That is, the shaft is fixed so that it can only rotate, but controls its axial and radial movements. The motor cannot work at all without a bearing. Because the shaft may move in any direction, the motor requires only rotation of the shaft when operating. In order to reduce the influence, good lubrication must be realized on the bearings of the high-speed shaft, some bearings are already lubricated and are called pre-lubricated bearings, and most bearings must be provided with lubricating oil, so that the bearings are not only increased in energy consumption due to friction during high-speed operation, but also easily damaged. The statement that sliding friction is converted to rolling friction is one-sided because there is something called a sliding bearing.

When the existing hub bearing is installed on a hub, bolts are generally used for fixing, but after long-time use, the bolts are likely to loose under the influence of factors such as vibration and the like, so that a gland covering the bearing is loosened, the inner bearing has a sliding space, the transmission stability is influenced, and the vibration is further increased.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a wheel hub bearing with pretightning force anti loosening structure has solved long-time use back, receives the influence of factors such as vibrations, and not hard up problem is likely to appear to the bolt, and then makes the gland that covers the bearing not hard up, makes the problem that inside bearing has gliding space.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a wheel hub bearing with pretightning force anti loosening structure, includes wheel hub and the inside bearing of embedding wheel hub, wheel hub's front side and the outside that is located the bearing are through hexagon socket head cap screw fixedly connected with oversheath, the oversheath includes flange section and cover section, and cover section cover establishes the outside at the bearing, the surface of cover section just is located the front side cover of flange section and is equipped with the ring gear, outer tooth's socket has been seted up to hexagon socket head cap screw's side, and the outer disc of ring gear set up with the interior tooth's socket of outer tooth's socket looks block, the front side fixedly connected with minor axis of flange section, the front end of minor axis runs through the ring gear and extends to the front side of ring gear, the surface of minor axis just is located the front side cover of ring gear and is equipped with oval turning block, and the inside of ring gear set up.

Preferably, the front face of the toothed ring and two sides of the elliptical hole are provided with grooves, and two sides of the bottom of the elliptical rotating block are fixedly connected with elastic metal sheets matched with the grooves.

Preferably, the area of the elliptical hole is larger than that of the elliptical rotating block, and chamfers are arranged on the edges of the upper side and the lower side of the elliptical rotating block.

Preferably, a wavy elastic pressing ring is pressed between the front side of the inner surface of the sleeve section and the front side of the bearing in a pressing mode, and a shaft hole is formed in the front side of the sleeve section.

Preferably, a plurality of drain holes are formed in the front side of the side wall of the sleeve section at equal intervals, and the drain holes are of a conical structure with a large inner diameter and a small outer diameter.

Preferably, the hexagon socket head cap screw and minor axis all are provided with three groups at least, and the equidistance distributes in the surface of flange section in the crisscross way.

Advantageous effects

The utility model provides a wheel hub bearing with pretightning force anti loosening structure. Compared with the prior art, the method has the following beneficial effects:

(1) the hub bearing with the pretightening force anti-loosening structure comprises an outer sheath fixedly connected with the front side of a hub and the outer part of the bearing through an inner hexagon bolt, the outer sheath comprises a flange section and a sleeve section, the sleeve section is sleeved on the outer part of the bearing, a toothed ring is sleeved on the outer surface of the sleeve section and the front side of the flange section, an outer toothed groove is formed in the side surface of the inner hexagon bolt, an inner toothed groove clamped with the outer toothed groove is formed in the outer circumferential surface of the toothed ring, a short shaft is fixedly connected with the front side of the flange section, the front end of the short shaft penetrates through the toothed ring and extends to the front side of the toothed ring, an elliptical rotating block is sleeved on the surface of the short shaft and positioned on the front side of the toothed ring, an elliptical hole matched with the elliptical rotating block is formed in the toothed ring, the outer sheath is arranged on the front side of the hub, the bearing can be fixed and prevented from sliding forwards, and the outer part of the surface, and then avoid the hex bolts not hard up because of the gyration, guaranteed the fastness of bearing installation, and utilize the cooperation of oval turning block and elliptical aperture, can easily pin the ring gear, avoid its landing, it is convenient quick to fix.

(2) The hub bearing with the pre-tightening force anti-loosening structure is characterized in that a wave-shaped elastic pressing ring is pressed between the front side of the inner surface of the sleeve section and the front side of the bearing, a shaft hole is formed in the front side of the sleeve section, a plurality of drain holes are formed in the front side of the side wall of the sleeve section at equal intervals, the drain holes are of a conical structure with large inner diameter and small outer diameter, the bearing can be pressed by the wave-shaped elastic pressing ring and can bear certain stress, a second fixed anti-loosening effect is provided, gap errors in size matching can be eliminated, the drain holes are formed in the side face of the space where the wave-shaped elastic pressing ring is located, entering rainwater can be discharged, the phenomenon that the rainwater is accumulated for a long time to cause corrosion and aging of a workpiece is avoided, the conical design of the drain holes enables outside water to be difficult to enter, and the.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

fig. 2 is a front view of the outer sheath and the gear ring of the present invention;

FIG. 3 is an enlarged view of a portion of the substrate of FIG. 2;

fig. 4 is a side view of the elliptical rotating block and the elastic metal sheet of the present invention.

In the figure: 1-hub, 2-bearing, 3-inner hexagon bolt, 4-outer sheath, 41-flange segment, 42-sleeve segment, 43-shaft hole, 44-water drain hole, 5-toothed ring, 6-outer tooth socket, 7-inner tooth socket, 8-short shaft, 9-elliptic rotating block, 10-elliptic hole, 11-groove, 12-elastic metal sheet and 13-wave elastic pressing ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a hub bearing with a pretightening force anti-loosening structure comprises a hub 1 and a bearing 2 embedded in the hub 1, wherein the front side of the hub 1 and positioned outside the bearing 2 are fixedly connected with an outer sheath 4 through inner hexagonal bolts 3, the inner hexagonal bolts 3 and a short shaft 8 are at least provided with three groups and are equidistantly and alternately distributed on the surface of a flange section 41, the outer sheath 4 comprises a flange section 41 and a sleeve section 42, the sleeve section 42 is sleeved outside the bearing 2, a wavy elastic pressing ring 13 is pressed between the front side of the inner surface of the sleeve section 42 and the front side of the bearing 2, the front side of the sleeve section 42 is provided with a shaft hole 43, the front side of the side wall of the sleeve section 42 is provided with a plurality of drainage holes 44 at equal intervals, the drainage holes 44 are of a conical structure with large inner diameter and small outer diameter, the bearing 2 can be pressed by bearing the wavy elastic pressing ring 13, and certain stress is provided, so as to provide, the gap error of size matching can be eliminated, the side surface of the space where the wavy elastic pressing ring 13 is located is provided with a drain hole 44, the entering rainwater can be discharged, the phenomenon that the rainwater is accumulated for a long time to cause the corrosion and the aging of a workpiece is avoided, the conical design of the drain hole 44 ensures that the outside water can hardly enter, the inside water can be easily thrown out under the centrifugal force, the outer surface of the sleeve section 42 and the front side of the flange section 41 are sleeved with a toothed ring 5, the side surface of the inner hexagonal bolt 3 is provided with an outer toothed groove 6, the outer circular surface of the toothed ring 5 is provided with an inner toothed groove 7 clamped with the outer toothed groove 6, the front side of the flange section 41 is fixedly connected with a short shaft 8, the front end of the short shaft 8 penetrates through the toothed ring 5 and extends to the front side of the toothed ring 5, the surface of the short shaft 8 and the front side of the toothed ring 5 are sleeved with an elliptical rotating block 9, and the elliptical hole 10 matched, through set up oversheath 4 in wheel hub 1's front side, can fix bearing 2, avoid it roll-off forward, the outer tooth socket 6 on 3 surfaces of hexagon bolt that is used for fixed oversheath 4 can be locked to the inner tooth's socket 7 that utilizes ring gear 5, and then avoid hexagon bolt 3 not hard up because of the gyration, the fastness of bearing 2 installation has been guaranteed, and utilize the cooperation of oval turning block 9 and elliptical aperture 10, can easily pin ring gear 5, avoid its landing, it is convenient quick to fix, the front of ring gear 5 just is located the both sides of elliptical aperture 10 and all sets up fluted 11, the equal fixedly connected with in both sides of oval turning block 9 bottom has elastic metal piece 12 with recess 11 looks adaptation, the area of elliptical aperture 10 is greater than the area of oval turning block 9, and the edge of both sides all is equipped with the chamfer about oval turning block 9.

And those not described in detail in this specification are well within the skill of those in the art.

During installation, firstly, a bearing 2 is plugged into a hub 1, then a wavy elastic pressing ring 13 is placed into an outer sheath 4, then the outer sheath 4 is sleeved outside the bearing 2, a flange section 41 of the outer sheath 4 is tightly fixed with the surface of the hub 1 through an inner hexagonal bolt 3, then a toothed ring 5 is sleeved outside a sleeve section 42 of the outer sheath 4, the angle of the inner hexagonal bolt 3 is adjusted, an outer tooth groove 6 on the surface of the inner hexagonal bolt is enabled to be staggered with an inner tooth groove 7 on the surface of the toothed ring 5, the angle of an elliptic rotating block 9 is adjusted to be coincident with an elliptic hole 10, then the toothed ring 5 is pressed inwards, the outer tooth groove 6 is enabled to be clamped with the inner tooth groove 7, the elliptic rotating block 9 penetrates through the elliptic hole 10, then the elliptic rotating block 9 is rotated by 90 degrees, and an elastic metal sheet 12 on the inner side of the elliptic rotating block is enabled to be.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a wheel hub bearing with pretightning force anti loosening structure, includes wheel hub (1) and embedding wheel hub (1) inside bearing (2), its characterized in that: the front side of the hub (1) is located outside the bearing (2) and is fixedly connected with an outer sheath (4) through an inner hexagonal bolt (3), the outer sheath (4) comprises a flange section (41) and a sleeve section (42), the sleeve section (42) is sleeved outside the bearing (2), a toothed ring (5) is sleeved on the outer surface of the sleeve section (42) and located on the front side of the flange section (41), an outer toothed groove (6) is formed in the side surface of the inner hexagonal bolt (3), an inner toothed groove (7) clamped with the outer toothed groove (6) is formed in the outer circumferential surface of the toothed ring (5), a short shaft (8) is fixedly connected with the front side of the flange section (41), the front end of the short shaft (8) penetrates through the toothed ring (5) and extends to the front side of the toothed ring (5), an elliptic rotating block (9) is sleeved on the surface of the short shaft (8) and located on the front side of the toothed ring (5), and an elliptical hole (10) matched with the elliptical rotating block (9) is formed in the gear ring (5).

2. The hub bearing with the pre-tightening force anti-loosening structure as claimed in claim 1, wherein: the front of the gear ring (5) and the two sides of the elliptical hole (10) are provided with grooves (11), and the two sides of the bottom of the elliptical rotating block (9) are fixedly connected with elastic metal sheets (12) matched with the grooves (11).

3. The hub bearing with the pre-tightening force anti-loosening structure as claimed in claim 1, wherein: the area of the elliptical hole (10) is larger than that of the elliptical rotating block (9), and chamfers are arranged on the edges of the upper side and the lower side of the elliptical rotating block (9).

4. The hub bearing with the pre-tightening force anti-loosening structure as claimed in claim 1, wherein: the wave-shaped elastic pressing ring (13) is pressed between the front side of the inner surface of the sleeve section (42) and the front side of the bearing (2), and a shaft hole (43) is formed in the front side of the sleeve section (42).

5. The hub bearing with the pre-tightening force anti-loosening structure as claimed in claim 1, wherein: a plurality of drain holes (44) are formed in the front side of the side wall of the sleeve section (42) at equal intervals, and the drain holes (44) are of a conical structure with a large inner diameter and a small outer diameter.

6. The hub bearing with the pre-tightening force anti-loosening structure as claimed in claim 1, wherein: the inner hexagon bolts (3) and the short shafts (8) are at least provided with three groups and are distributed on the surface of the flange section (41) in an equidistant and staggered manner.