JPH0446099Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a spring bracket having a contact seat that engages with a leaf spring.

[Prior Art] For example, as shown in Japanese Unexamined Patent Publication No. 57-904, parent and child leaf springs with auxiliary springs as shown in Fig. 4 are often used in rear axle suspension systems for medium-sized or larger trucks. ing. When the load is low, such as when the car is empty, only the main spring 1 is acting, but when the load increases and reaches a certain load, the helper spring 2 comes into contact with the contact seat 4 of the helper spring bracket 3.
It has a so-called non-linear characteristic in which the main spring 1 and the helper spring 2 act simultaneously and the spring constant increases rapidly compared to when the load is low.

By the way, it is necessary to periodically apply grease to the spring sliding surface A of the contact sheet 4. Although periodic lubrication is not difficult, the short intervals between lubrication are time-consuming and cumbersome, and it is possible to forget to lubricate, resulting in wear and tear on the contact sheet.

A technique for providing a grease reservoir in a contact sheet is disclosed in, for example, Japanese Utility Model Application No. 59-101024. However, in this known technique, since a grease reservoir is simply provided, the grease is easily contaminated by mud splashes and rainwater, and the amount of grease is relatively small, requiring frequent supply of grease.

Techniques for automatically supplying grease are generally known and are described, for example, in Japanese Utility Model Application Publication No. 172170/1983. However, this known technique cannot be applied to a spring bracket having a contact sheet to support the weight of a vehicle.

[Problem to be Solved] Therefore, the purpose of the present invention is to provide a spring bracket that can store a sufficient amount of grease to supply to a contact sheet and that does not allow the stored grease to become contaminated by mud or rainwater. is to provide.

[Means for Solving the Problems] According to the present invention, in a spring bracket having a contact seat that engages with a leaf spring, the spring bracket is made of cast iron, has a relatively thick horizontal portion, and has a grease reservoir. A grease reservoir having an upper opening is formed in the horizontal part, and the upper opening is closed with a lid through a packing, and the lid has a grease nipple and a grease nipple communicating the packing with the grease reservoir. A ventilation hole is provided, and a discharge hole is formed in the bottom of the grease reservoir and in the contact sheet to supply grease to the spring sliding surface where the leaf spring engages with the contact sheet.

[Description of Functions and Effects] Therefore, grease is injected and filled into the grease reservoir in advance through the grease nipple. At this time, the air in the grease reservoir is discharged from the ventilation hole, so the grease injection operation is performed smoothly. While the vehicle is running, the grease is gradually supplied to the spring sliding surface from the discharge port. Since a relatively large amount of grease can be filled into the grease reservoir, the interval between greasing can be extended, and wear and tear on the contact sheet can be minimized.

Also, since the spring bracket is cast,
It has sufficient strength and can withstand heavy loads.

It is covered with a lid and has an open ventilation hole, but since this hole is small, dust and rainwater do not enter the grease reservoir, and the grease in the grease reservoir does not get dirty.

Therefore, the interval between greasing can be extended, and when the grease runs out, it is sufficient to replenish from the grease nipple.

[Preferred Embodiment] When implementing the present invention, it is preferable that the diameter and number of the discharge holes are determined depending on the amount of grease to be supplied.

[Examples] Examples of the present invention will be described below with reference to the drawings.

In FIG. 4, helper spring brackets 10, 10 according to the present invention are fixed to the frame 5 above both ends of the helper spring 2.

In FIGS. 2 and 3, a horizontal portion 11 of a helper spring bracket 10 made of cast iron is formed to be wider and thicker than a conventional bracket 3, and a known spring seat 12 is provided on the lower surface of the helper spring bracket 10 with a bolt 2.
It is installed at 0.20. A grease reservoir 13 having an upper opening 14 for storing grease is formed in this horizontal portion 11, and the upper opening 14 is connected to a sheet metal cover 1 which is a lid through a packing 15.
It is sealed at 6. This cover 16 is provided with a grease nipple 17 and a vent hole 18 that communicate with the inside through a packing 15. A discharge hole 19 for supplying grease to the spring sliding surface A is provided in the bottom of the grease reservoir 13 and in the contact sheet 12. The diameter and number of the discharge holes 19 are appropriately determined depending on the amount of grease supplied.

Therefore, a large amount of grease stored in the grease reservoir flows down from the discharge hole onto the spring sliding surface A over time, and lubricates the surface A. Therefore, the interval between lubrication becomes longer, and it is possible to prevent the contact sheet from being worn out due to forgetting to lubricate. In addition, the packing 15 prevents the grease that has become loose due to the heat of sliding with the spring 2 from leaking out.
The ventilation hole 18 becomes the grease reservoir 1 when the grease decreases.
This prevents the inside of the grease from becoming negative pressure and prevents the grease from flowing down.

Although the illustrated embodiment has been described with reference to a helper spring bracket, it is obvious that the present invention is not limited to this and can be applied to a contact type spring bracket in general.

[Effects of the invention] As described above, the present invention provides the following excellent effects.

(1) The grease replenishment interval can be extended, and wear and tear on the contact sheet can be minimized.

(2) The grease in the grease reservoir will not get contaminated by dust or rainwater.

(3) Greasing is carried out by gravity, so there are no moving parts and there is no need to worry about breakdowns.

(4) It has a simple structure and is extremely preferred in practice.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a rear axle suspension system equipped with a helper spring bracket embodying the present invention;
Figures 2 and 3 are side and rear views showing an embodiment of the present invention, Figure 4 is a side view showing a conventional rear axle suspension, and Figures 5 and 6 are a conventional helper spring bracket. FIG. 10... Helper spring bracket, 12...
...Contact sheet, 13...Grease reservoir, 1
4...Top opening, 15...Packing, 16...Cover, 17...Grease nipple, 18...Vent hole, 19...Discharge hole.

Claims (1)

[Scope of utility model registration request] A spring bracket having a contact seat that engages with a leaf spring, the spring bracket being made of cast iron and having a relatively thick horizontal portion, and a grease reservoir portion having an upper opening for storing grease in the horizontal portion. The upper opening is closed by a lid body through a gasket, and the lid body is provided with a grease nipple and a ventilation hole that communicates the gasket with the grease reservoir, and a leaf spring is provided on the contact sheet. A spring bracket characterized in that a discharge hole is formed in the bottom of the grease reservoir and in the contact sheet for supplying grease to the sliding surface of the spring to be engaged.