JPS6120264Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a support structure for a driven device such as a hydraulic pump for power steering, which is attached to the outside of an engine drive device and driven by the drive device.

2. Description of the Related Art Conventional support structures for driven devices such as pumps include structures shown in FIGS. 1 and 2, for example. In the figure, 1 is an engine of an automobile or the like as a drive device, and 2 is a V-pulley attached to a crankshaft 3 of the engine 1. Reference numeral 4 denotes a bracket, which is attached to the outer periphery of the engine 1.

Reference numeral 5 in the figure is a hydraulic pump for power steering, which is a driven device, and brackets 7a and 7b are attached to the front and rear of the hydraulic pump 5 in the axis 6 direction. The bracket 4 on the drive side is inserted between the two brackets 4 and 7, and the brackets 4 and 7 are held together by bolts 9 that are installed through both brackets 4 and 7. Reference numeral 10 denotes a guide plate, one end of which is fixed to the engine 1, and the other end of which is fixed to the engine 1.
An arcuate groove 11 is formed around the bolt 9. A bolt 12 is threaded through the groove 11 to the front bracket 7a of the hydraulic pump 5, and the guide plate 10 is clamped between the head of the bolt 12 and the front bracket 7a. 10 and the drive-side bracket 4 fix the hydraulic pump 5 to the engine 1.

Further, a V-pulley 1 is attached to the shaft 6 of the hydraulic pump 5.
3 is attached, and a V belt 14 is stretched between this V pulley 13 and the V pulley 2 on the crankshaft 3 side, and the fixing position of the guide plate 10 and the front bracket 7a is adjusted. This allows the tension of the V-belt 14 to be adjusted.

However, in the case of such a conventional support structure for a driven device such as a pump, brackets 7a and 7b are attached to the front and rear surfaces of the hydraulic pump 5 in the axial direction, and a size corresponding to the dimension between the brackets 7a and 7b is required. By attaching the bracket 4 with the engine 1 to the outer periphery of the engine 1, engaging both the brackets 4 and 7, inserting one bolt 9 through the engagement part, and clamping both the brackets 4 and 7 with this bolt 9, the The structure was such that the hydraulic pump 5 and the like were supported outside the engine 1. Then, the dimensions of the driving side bracket 4 are changed to the dimensions between the driven side brackets 7a and 7b.
That is, since it is difficult to make the dimension equal to the axial dimension of the hydraulic pump 5, as a result of making the former smaller, a certain amount of clearance is usually created between the two brackets 4 and 7. Therefore, due to vibrations caused by rotational fluctuations of the engine 1, the hydraulic pump 5 swings within the range of the gap, and the two brackets 4 and 7 come into contact, causing rattling and other noise. Ta.

Furthermore, in order to eliminate the gap between the two brackets 4 and 7, it is sufficient to make the dimensions of the drive side bracket 4 equal to the gap, but the dimensions of the hydraulic pump 5 also have their own inherent tolerances. For some reason,
Even if the dimensions of the bracket 4 are finished with high precision, the two dimensions will not necessarily be equal, and if the dimensions of both the brackets 4 and 7 are made to match to eliminate the gap, there will only be difficulty in machining. Moreover, there was a problem that the assembly process was extremely expensive and uneconomical.

This invention was made by focusing on these conventional problems, and involves fitting an adjusting screw onto the bolt, the outer circumference of which is threaded onto one bracket side, and the end surface of which is pressed into contact with the other bracket. The purpose of the present invention is to solve the above-mentioned problem by rotating the adjusting screw with the rotating means and moving it forward and backward in the axial direction so that the adjusting screw fills the gap between the two brackets. .

This invention will be explained below based on the drawings.

FIGS. 3 and 4 are diagrams showing an embodiment of this invention.

First, to explain the structure, numeral 4 in the figure is a drive-side bracket, and between two rising pieces 4a on the side of the drive-side bracket 4 is a cylindrical connecting member 4b.
are integrally attached, and a hole 4c extending in the axial direction passes through the center of the connecting member 4b.
Such a drive side bracket 4 is fixed to an engine of an automobile or the like, which is a drive device.

Reference numeral 5 in the figure is a hydraulic pump for power steering, which is a driven device.Brackets 7a and 7b are attached to the front and rear surfaces of the hydraulic pump 5 in the axis 6 direction. , holes 15a and 15b are provided which are concentric with each other. The hole 15a of the front bracket 7a has a flange 8 on its outer periphery.
A cylindrical bushing 8 provided with a cylindrical bushing 8 is fitted and fixed to form a part of the bracket 7a, and a female thread 8b is provided inside the bushing 8. ing. Further, a nut 16 that is screwed into the bolt 9 is attached to the outer surface of the hole 15b of the rear bracket 7b.

17 in the figure is an adjustment screw, and this adjustment screw 1
7, as shown in FIG. 6, has a male thread 17a on its outer periphery that engages with the female thread 8b of the bush 8, and a hole 17b whose diameter is slightly larger than the diameter of the bolt 9.
It penetrates in the axial direction, and furthermore, an engagement receiving part 17c consisting of a rectangular groove is formed on the end face in the axial direction.
Further, reference numeral 18 denotes an adjusting member serving as a rotating means for press-contacting the adjusting screw 17 to the drive side bracket 4. As shown in FIG. Engagement receiving part 1
An engaging portion 18a consisting of a square hook engages with 7c.
A hole 18b is provided in the center of the bolt 9, and the diameter of the hole 18b is slightly larger than that of the bolt 9. Thus, the outer periphery of the adjusting screw 17 is screwed into the driven bracket 7, and its end surface is pressed into contact with the driving bracket 4.

A flange 9a is formed on the head of the bolt 9 to ensure that the adjustment nut 18 can be tightened reliably.

1 is a gap, and this gap 1 is equal to the dimension L between the front bracket 7a and the rear bracket 7b on the driven side.
This is caused by the difference between the size M and the dimension M of the drive side bracket 4.

Furthermore, 10 in the figure is a guide plate,
One end of the guide plate 10 is fixed to the engine, and the other end is formed with an arcuate groove whose center of rotation is the mounting position of the bolt 9. A bolt 12 passes through the groove and is screwed into a nut 12a on the back of the front bracket 7a, so that the guide plate 10 is clamped between the head of the bolt 12 and the front bracket 7a. There is. Thus, the guide plate 10 and the drive bracket 4 fix the hydraulic pump 5 attached to the driven bracket 7 to the engine.

13 is a V mounted on the shaft 6 of the hydraulic pump 5.
A V-belt serving as a power transmission means is stretched between this V-pulley 13 and a V-pulley attached to the crankshaft of the engine. By adjusting the fixing position between the guide plate 10 and the front bracket 7a, the tension of the V-belt can be adjusted.

Next, the action will be explained.

First, the driven side brackets 7a and 7b are attached to the front and rear surfaces of the hydraulic pump 5, respectively. At this time, the adjusting screw 17 is screwed into the bush 8 of the front bracket 7a to such an extent that the tip does not protrude inside the driven bracket 7.

Next, fit the driven side bracket 7 onto the drive side bracket 4 attached to the engine, and connect the hole 4c of the drive side bracket 4 and the hole 1 of the driven side bracket 7.
5b etc. are set so that they are approximately concentric. Next, the adjusting member 18 is inserted into the bushing 8 from the engaging part 18a side, and the engaging part 18a of the adjusting member 18 is engaged with the engaging receiving part 17c of the adjusting screw 17 held in the bushing 8. let

Thereafter, the bolt 9 is passed through the adjusting member 18, the adjusting screw 17, and the holes 18b, 17b, 4c, and 15b of the drive side bracket and the rear bracket 7b, and is screwed into the nut 16 of the rear bracket 7b. Then, by rotating the adjustment member 18, the adjustment screw 17 is moved and its end face is pressed into contact with the drive side bracket 4, and the dimension L between the front and rear brackets 7a and 7b on the driven side and the dimension of the drive side bracket 4 are adjusted. The gap 1 with M is filled with the adjustment screw 17.
Thereafter, by further tightening the bolt 9, the gap 1 between the brackets 4, 7 is filled, so that the looseness between the driven brackets 7a, 7b and the drive bracket 4 is eliminated. Furthermore, the engagement receiving portion 17c of the adjustment screw 17 is engaged with the engagement receiving portion 18a of the adjusting member 18.
Since the adjustment screw 17 is clamped with the bolt 9, the adjustment screw 17
never loosens. Therefore, it is possible to prevent a gap from forming between the brackets 4 and 7.

In addition, the drive side bracket 4 is formed into two parts,
The adjusting screw 17 and the adjusting member 18 may be provided on the driving side bracket 4 so that the driven side bracket 7 is held therebetween, or the engaging receiving portion 17c side of the adjusting screw 17 may be protruded and On the contrary, it goes without saying that a groove may be provided on the engaging portion 18a side of the adjusting member 18. Furthermore, the adjusting screw 17 and the adjusting member 18 may be formed integrally, and in this case, the number of parts can be reduced.

As explained above, in this invention, an adjusting screw whose outer periphery is screwed onto one bracket side and whose end surface is pressed against the other bracket is fitted onto the bolt, so that the adjustment can be performed by the rotating means. The screw is rotated to move it forward and backward in the axial direction, and the adjusting screw fills the gap between both brackets. As a result, even if there is a gap between the driven bracket and the driving bracket that engages with it, the adjustment screw can fill the gap. Therefore, it is possible to eliminate rattling between both brackets, thereby preventing the occurrence of noise such as rattling noise, and the dimensional accuracy of the engaging portions of both brackets can be made rough. Machining can be simplified. Furthermore, since the gap can be filled when installing the driven device, the assembly process is simplified.
Moreover, the driven device can be securely fixed, and
It is possible to prevent the adjusting screw from loosening, and to suppress the occurrence of a gap between both brackets.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a support structure for a conventional driven device such as a pump, Fig. 2 is a right side view of the same, Fig. 3 is a side view showing an embodiment of the invention, and Fig. 4 is a FIG. 5 is a perspective view of the adjustment nut, and FIG. 6 is a perspective view of the adjustment screw. 4... Drive side bracket, 5... Hydraulic pump (driven device), 7... Driven side bracket, 7a...
Front bracket, 7b...Rear bracket, 8...
...Bush, 8b...Female thread, 9...Bolt, 14
... V belt (power transmission means), 17 ... Adjustment screw, 17a ... Male thread, 17b ... Hole, 17c ...
...Engagement receiving part, 18...Adjustment member (rotating means), 1
8a...Engaging portion.

Claims (1)

[Scope of utility model registration request] The driven side bracket provided on the driven device such as a bolt is engaged with the driving side bracket fixed to the driving device, and the bolt passes through both brackets.
In a support structure for a driven device in which the latter bracket is clamped to fix the driven device to the driving device, and power is transmitted from the driving device to the driven device by a power transmission means that spans both devices, one bracket is fixed to the driven device. 1. A support structure for a driven device such as a pump, characterized in that an adjusting screw is fitted onto the bolt and the outer periphery thereof is screwed onto one side of the bolt, and the end surface is pressed against the other bracket.