JPH0530972Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a shaft support device, and is particularly suitable for supporting a shaft extending from a differential gear in a horizontally mounted front engine, front drive vehicle, or so-called FF vehicle. Regarding equipment.

(Prior art) In a FF vehicle with a horizontally mounted engine, the differential gear connected to the engine is located off to one side from the center of the vehicle body, so of the pair of shafts extending left and right from the differential gear, one This longer shaft is supported by a bearing and a bearing support that connects the bearing to the engine (for example, in
Publication No. 30617).

In order to position the shaft, the bearing support is sometimes bolted to the engine while engaging with a dowel pin protruding from the engine mounting surface. In this case, the bearing support is first attached to the engine, then the outer ring of the bearing fixed to the shaft is fitted into the bearing support, and the shaft is assembled. In order to improve the ease of assembling the shaft at this time, an appropriate clearance is provided between the outer ring of the bearing and the hole surface of the bearing support.

(Problems to be Solved by the Invention) The above-mentioned clearance resonates with the engine at a certain frequency, which may increase the noise inside the vehicle interior and cause discomfort to the occupants.

The purpose of this invention is to eliminate the clearance between the outer ring of the bearing and the hole surface of the bearing support, and also to make it possible to connect the bearing support to the knock pin protruding from the engine after the shaft is assembled to the bearing support. The object of the present invention is to provide a shaft support device that can be combined with other shafts.

(Means for Solving the Problems) The present invention is a device for positioning and supporting the shaft by means of a dowel pin protruding from the mounting surface of the engine, the bearing being attached to the shaft. The bearing support includes a bearing support into which an outer ring of the engine is press-fitted, and the bearing support has a contact surface that contacts the mounting surface of the engine, and when the bearing support is rotated to bring the corresponding contact surface into contact with the mounting surface,
an elongated hole that receives the dowel pin and extends in the rotational direction, and when the abutment surface and the mounting surface come into contact, a part of the inner surface of the elongated hole engages with the dowel pin. It is formed to do so.

(Operations and Effects) The shaft press-fits the outer ring of the bearing attached to the shaft into the hole of the bearing support, connects the shaft to the differential in this state, and then rotates the bearing support to insert it into the elongated hole. Insert the dowel pin into the bearing support, and bolt the bearing support appropriately to assemble it to the support device.

Since the bearing support is attached to the engine after being combined with the shaft, the diameter of the hole for the bearing provided in the bearing support is selected to be the same size as the diameter of the outer ring, so that the outer ring of the bearing and the hole surface of the bearing support are Even if the clearance between the shaft and the shaft is eliminated, the ease of assembling the shaft will not deteriorate. In this way, the generation of vibration noise caused by the clearance can be suppressed.

The bearing support has an elongated hole with an inner surface that engages with the engine's knock pin by rotating the bearing support and bringing the abutment surface into contact with the mounting surface. Therefore, the shaft can be positioned, and subsequent positioning of the shaft is substantially unnecessary. In this way, it is easy to attach the bearing support to the engine.

(Example) As shown in FIGS. 1 and 2, the support device 10 positions the shaft 18 using knock pins 14 and 16 protruding from the mounting surface 13 of the engine 12, and supports the shaft 18. The apparatus includes a bearing support 20.

The shaft 18 is connected to the engine 1 at one end thereof.
2, and has a flange 24 at the other end. The flange 24 is
Universal joint 28 connected to drive shaft 26
is joined to the flange 30 of. The shaft 18 is press-fitted into the inner ring 34 of the bearing 32.

The bearing support 20 includes a support portion 38 having a hole 39 into which the outer ring 36 of the bearing 32 is press-fitted.
and a coupling part 40 that is attached to the engine 12, and the coupling part 40 has a contact surface 41 that contacts the mounting surface 13 of the engine 12, and a coupling part 40 that contacts the mounting surface 13 of the engine 12;
6.

The elongated holes 42 and 44 are formed to extend in the direction of rotation to receive the dowel pins 14 and 16, respectively, when the contact surface 41 is rotated in the direction of arrow A in FIG. 1 in order to contact the mounting surface 13. has been done. That is, the elongated hole 42 is provided at an angle from the abutment surface 41 so that the hole depth gradually increases from the bottom to the top, while the elongated hole 44 is formed so that the hole depth gradually increases from the bottom to the top. It is cut out from the contact surface 41 and the lower surface end 45 so as to become deeper. The long holes 42 and 44 are the dowel pins 14,
Each of the 16 outer diameters is formed with high precision,
When the dowel pins 14, 16 are inserted into the elongated holes 42, 44 and engage with the inner surfaces of the tops of the elongated holes 42, 44, the shaft 18 is positioned in the axial direction.

To assemble the shaft 18, first press fit the outer ring 36 of the bearing 34 fixed to the shaft 18 into the hole 39 of the bearing support 20, connect the shaft 18 to the universal joint 28, and then assemble the shaft 18, the bearing support 20, A universal joint 28 and driveshaft 26 assembly is constructed and coupled to the differential 22. Thereafter, the bearing support 20 is rotated so that the dowel pins 14 and 16 are engaged with the elongated holes 42 and 44.

In conventional support devices, the bearing support 46
As shown in FIG. 5, there were holes 48 and 50 extending in the axial direction of the knock pins into which the knock pins 14 and 16 were inserted, respectively.
Since the bearing support 46 could not be rotated and attached, the bearing support 46 was first attached to the engine 12. However, in the present invention, since the bearing support 20 is provided with the long holes 42 and 44, the bearing support 20 can be rotated without any trouble, and the knock pins 14 and 16 are engaged with the long holes 42 and 44. Thereafter, a bolt is inserted into the bolt hole 52 of the bearing support 20 and screwed into the engine 12, completing the assembly.

[Brief explanation of drawings]

Figure 1 is a sectional view of the support device according to the present invention, Figure 2
The figure is a front view showing the shaft supported by the support device, and Figure 3 is a side view of the bearing support.
FIG. 4 is a rear view of the bearing support, and FIG. 5 is a side view showing a conventional support device. 10... Support device, 12... Engine, 13...
...Mounting surface, 14, 16... Knock pin, 18...
Shaft, 20...Bearing support, 41...
...Abutment surface, 42, 44...long hole.

Claims (1)

[Scope of utility model registration request] A device for positioning a shaft and supporting the shaft by a dowel pin protruding from a mounting surface of the engine, the device including a bearing support into which an outer ring of a bearing attached to the shaft is press-fitted, and the bearing support is a contact surface that contacts the mounting surface of the engine; and a long hole that extends in the direction of rotation and receives the knock pin when the contact surface is rotated to bring the contact surface into contact with the mounting surface, the long hole extending in the direction of rotation. The shaft support device is formed such that a part of the inner surface of the elongated hole engages with the knock pin when the contact surface and the mounting surface come into contact with each other.