JPS60157594A - Lubricating device for bearing unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a lubricating device for a bearing unit, which comprises a shaft and a bearing surrounding the shaft and is attached to a casing containing lubricating oil, the shaft having an axial hole and a bearing unit. It has a lateral hole,
These holes communicate with an oil chamber located adjacent to the end of the shaft.

Prior art This type of lubrication device for bearing units (US Pat. No. 1032
No. 724), the bearing unit consists of a shaft and a bearing surrounding it, and is arranged in a casing. Lubricating oil supplied into an oil chamber located adjacent to the shaft end is conveyed through the bearing. This oil chamber is connected to the longitudinal and lateral holes of the shaft, and the lubricating oil coming from the oil chamber is discharged through the lateral holes.

Problems to be Solved by the Invention The disadvantage of the above-mentioned lubricating device is that due to the rotational movement of the bearing unit, especially at high speeds, the lubricating oil is splashed onto the outer surface of the oil chamber and thus reaches the axial bore. It lies in not doing it.

SUMMARY OF THE INVENTION An object of the present invention is to form a lubricating device for a bearing unit in such a way that lubricating oil reliably reaches the axial and lateral holes.

Means of the Invention for Solving the Problems The gist of the present invention for solving the above problems is that the oil chamber is divided into a rotation chamber and a quiet chamber by a partition device, whereby oil coming from a bearing and moving within the rotation chamber. The lubricating oil is separated into a quiet chamber by a partition device, and from this quiet chamber reaches the axial hole and the lateral hole.

In order to ensure that a sufficient quantity of lubricating oil reaches the axial bore at all times, for example at low rotational speeds, a rotating body is arranged in the bore of the casing, which forms an extension of the receptacle;
This rotating body has a conveying groove and is fixed to a shaft. Furthermore, good lubrication of this bearing unit is obtained if a relatively movable knob is arranged on the shaft in the region of the transverse bore.

Effect of the invention According to the invention, lubricating oil reaches from the quiet chamber into the axial hole and the lateral hole, and the rotational movement of the lateral hole creates a negative pressure, which additionally provides lubrication. Useful for reliable oil transport. The partition walls and openings ensure that a predetermined amount of lubricating oil flows into the quiet chamber. This inflow is also facilitated by the guide surfaces. A tube piece extending into the axial bore and connected to the partition wall serves for good guidance of the lubricating oil. For ease of assembly, the partition device is inserted with its cylindrical jacket surface into the corresponding receptacle of the clip. This cover surrounds the oil chamber and is held to the casing, for example by screws.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a miter transmission 1 for a two-wheeled motor vehicle, which has a bearing unit 2 . The bearing unit 2 is formed by a shaft 3, a bevel gear 5 which is movable relative to the shaft and surrounds a hub 4, and a ball bearing 6. The ball bearing 6 cooperates with the nozzle 4 and with an insert 8 provided in the casing.

A ball bearing 6 is held in the insert 8 by a shoulder 9 and a safety ring 10. Furthermore, the insert 8 has its bearing wall 11
is supported by the support wall 12 of Kelsong 7,
The collar 14 supports the support wall 12 via the support wall 13.

The bevel gear 5 meshes with a further bevel gear 15, which has a shaft piece 16 leading to a cardan shaft (not shown) which drives the rear wheel of the two-wheeled motor vehicle. This bevel gear is arranged in an insert 18 of the housing 7 via a tapered roller shaft 17.

The shaft 3 is connected, as indicated by the reference numeral 19, to a secondary shaft 20 of a transmission device (not shown). Furthermore, the shaft 3 is equipped with a damping device 21 cooperating with the bevel gear 5, which damping device 21
has a control bush 22 mounted on the shaft 3 non-rotatably and axially movable (in the direction of B-0), a compression spring 23 surrounding it and a spring catch 24 for it. There is.

The compression spring 23 acts between a spring receiver 24 held axially by a safety ring 25 and a support 26 of the control bushing 22 to bring this control bushing into contact with the bevel gear 5 . The bevel gears 5 cooperate reliably with each other by means of projections 27 and recesses 28 (FIG. 2).

With this damping device 21, torque peaks caused by switching and acceleration processes are compensated for by the damped relative movement of shaft 3 and bevel gear 5.

A lubricating device 29 is provided for supplying the bearing point 1) of the bevel gear 5 or the hub 4 and the shaft 3 with the lubricating oil present in the housing. The lubricating device 29 includes an oil chamber 30 located adjacent to the end of the shaft and located one row behind the ball bearing 6.
and has an axial hole 31 and a lateral hole 32 =
These holes are provided in the shaft 3. A partition device 33 is disposed within the oil chamber 30, and this partition device divides the oil chamber into a rotating chamber 34 and a quiet chamber 35. The role of this partition device 33 is to pass through the ball bearing 6 and
The purpose is to separate the lubricating oil moving within the quiet chamber 35 into the quiet chamber 35.

Lubricating oil is supplied from this quiet chamber 35 into the axial hole 31 and the lateral hole 32 of the shaft 3 .

The partitioning device 33 has a separating wall 36 extending at right angles to the axis 3
The separation wall 36 is provided with an opening 37. This opening 37 is located on the horizontal plane 0- which includes the center Z of the shaft 3.
In the cold flow example 1 shown, this opening 37 is provided above I+ (see Figure 3), which extends parallel to the plane G-H near the outer circumference of the axial hole 31. It is located at J-.

The separation wall 36 is provided with a guide surface 38, and this guide surface 38
starts from the opening 37 and extends toward the rotating chamber 34 at an acute angle α with respect to the separation wall 36 (FIG. 4). This guide surface 38 continues in a ring shape from above downwards to the separating wall 36 (see FIGS. 3 and 4). This guide surface 38
can also be formed by cutting and raising the separation wall.

The guide surface 38 is separated by a wall 3 above one plane G-1-1.
It continues to the slit 39 of No. 6. This slit 39 extends between the guide surface 38 and the vertical plane LM. Connected to the separating wall 36 is a tube piece 40 (FIG. 1), which extends within the axial bore 31 and terminates in the vicinity of the transverse bore 32.

As can be seen from FIG. 1, the oil chamber 30 is formed by a notch 41 in a cover 43 that is connected to the casing 7 by screws (not shown). This cutout 41 has a cylindrical receiving part 44 in which a separating wall 36 is inserted.
A corresponding mantle surface 45 is inserted. This insertion may take place, for example, by a Soles fit. The mantle surface 45 is integrally molded with the separation wall 36. Separation wall 361'li
Furthermore, a collar 45' is provided, the diameter of which is small compared to the diameter of the jacket surface 45. This collar 45' facilitates the separation of the drooping oil into the quiet chamber 35.

The receptacle 44 leads into a hole 46 provided in the casing 7 . A rotary body 47 coupled to the shaft 13 is disposed within the hole 46, and this rotary body is connected to the ball bearing 6 and has a conveying groove 48. In the connection region of the rotating body 47 and the housing 7, chamfers 49, 50 are provided on these, thereby forming an oil supply channel 51 with a triangular cross section.

The shaft 3 is provided with a lubricating groove 5 on its outer circumference in the region of the transverse bore 32.
2, and longitudinal grooves 53 and 54 branch from this lubricating groove 52.

During operation of the microphone transmission 1, lubricating oil is conveyed through the ball bearing 6 and reaches into the oil supply passage 51. Furthermore, the lubricating oil is forced into the rotating chamber 34 from the oil supply passage 51 through the conveying groove 48 of the rotating body 47, and is deposited in the outer region within this rotating chamber by the action of centrifugal force (in FIG. 1, the lubricating oil is oil level). However, the lubricating oil flows through the opening 37 along the separation wall 36 due to the rotational movement (direction of rotation O).
and moves toward the guide surface 38, thereby forcibly reaching the quiet chamber 35.

Furthermore, the lubricating oil flows from this quiet chamber 35 via the tube piece 40 into the transverse hole 32 and thereby reaches the lubrication point I between the bevel gear 5 or the hub 4 and the shaft 3. Since the transverse holes 32, which are designed as through holes, act as a pump during rotation, this action additionally facilitates the delivery of the desired lubricating oil to the lubrication points.

Effects of the Present Invention According to the present invention, the partition device accommodates the transported FC lubricating oil in the rotating chamber and separates it into the quiet chamber, so that the lubricating oil reliably reaches the axial hole and the lateral hole. be able to.

[Brief explanation of drawings]

Fig. 1 is a horizontal longitudinal sectional view of the lubricating device of the present invention, and Fig. 2 is a cross-sectional view of the lubricating device of the present invention.
A partial schematic view as seen in the direction of the arrow indicated by A in the figure.
FIG. 4 is a cross-sectional view taken along line 1--1 in FIG. ■...Microphone transmission device, 2...Bearing unit, 3...
... Shaft, 4... Hub, 5... Bevel gear, 6... Ball bearing, 7... Casing, 8... Insert, 9... Shoulder, 10 Upper safety ring, 11... ... Supporting wall, 12... Supporting wall, 13...) ξ Tsukin, 14... Collar, 15.
... Bevel gear, 16 ... Shaft piece, 17 ... Tapered roller bearing, 18 ... Insert, 20 ... Secondary shaft, 21 ... Shocking device, 22 ... Control bushing, 23 ... Compression spring, 24 ... Spring receiver, 25 ... Safety ring, 26.
・・Support part, 27・Protrusion, 28・Notch, 29・
... Lubricating device, 30... Oil chamber, 31... Axial hole, 32... Lateral hole, 33... Partition device, 3
4... Rotation chamber, 35... Quiet chamber, 36... Separation chamber, 37... Opening, 38... Guide surface, 39... Slit, 40... Tube piece, 41...・Notch, 43...Crack-144...Receiving part 0.45...Outer surface, 45
I... Collar, 46... Hole, 47... Rotating body, 4
8... Conveyance groove, 49° 50... Chamfered part, 51...
Oil supply passage, 52... Lubricating groove, 53.54...
vertical groove

Claims (1)

[Claims] 1. A lubricating device for a bearing unit that includes a shaft and a bearing surrounding the shaft and is attached to a casing containing lubricating oil, the shaft having an axial hole and a lateral hole, In a type in which these holes communicate with an oil chamber located adjacent to the end of the shaft, the oil chamber (30) is divided into a rotation chamber (34) and a quiet chamber (35) by a partition device (33).
As a result, the lubricating oil coming from the bearing (6) and moving in the rotation chamber (34) is separated into the quiet chamber (35) by the partition device (33), and this quiet An axial hole (31) and a lateral hole (32) from the chamber
) A lubricating device for a bearing unit, characterized in that the lubricating device is configured to reach within. 2. The partition device (33) is provided with a separation wall (36) extending at right angles to the axis (4), and an opening (36) is provided in this separation wall.
37) is provided. Claim 3, wherein the opening (37) is provided above a horizontal plane (G-H) containing the center (Z) of the shaft (4). The lubricating device according to item 2. 4. The separation wall (36) is provided with a guide surface (38) extending approximately from the opening (37), and the guide surface (38) forms an acute angle (α) with respect to the separation wall (36). 3. The lubricating device according to claim 2, wherein the lubricating device comprises a rotary shaft and extends toward the rotation chamber (34). 5. The lubricating device according to claim 4, wherein the guide surface (38) extends in a ring shape along the separation wall (36). 6. The guide surface (39) provided on the separation wall (36) (38), and this slit is the guide surface (3B)
6. A lubricating device according to claim 5, wherein the lubricating device extends between the lubrication device and the vertical plane (L-M). 7. The separating wall (36) is provided with a tube piece (40) which extends in the area of said axial hole (3l) and which extends in the region of said axial hole (3l) and extends in the region of said axial hole (3l). 32) The lubricating device according to claim 2, wherein the lubricating device ends in the vicinity of 32). 8. The oil chamber is closed off by a catch fixed to the caisson, which is provided with a cylindrical receptacle (44) in which there is a corresponding separation. 3. The lubricating device according to claim 2, wherein an outer jacket surface (45) formed integrally with the wall (36) is inserted. 9. The receptacle (44) of the cover follows a hole (46) provided in the casing, in which a rotating body (47) with a conveying groove (48) for lubricating oil is arranged. 9. The lubricating device according to claim 8, wherein the rotating body is coupled to a shaft (4) and connected to a bearing (6). Any one of claims 1 to 9, in which a relatively movable knob (4) is arranged on the IO axis (4) in the region of the lateral hole (32). Lubricating device as described in section. 11. Lubricating device according to claim 10, subclause !i11, wherein the shaft (3) has a transverse hole (32) on its periphery and a lubricating groove (52) in the area of the hub (4). 12. Claims in which the separating wall (36) is provided with a collar (45') on the side facing the casing [8], the diameter of this collar being smaller than the diameter of the outer mantle surface (45). The lubricating device according to any one of items 1 to 11.