JPS61112835A - Brake disk having balance weight - Google Patents

Abstract

PURPOSE:To facilitate the attachment of a balance weight to a brake disc, by inserting a balance weight in a coil-like spring shape in one of ventilation slots in the brake disc so that the balance weight is resiliently locked. CONSTITUTION:A coil-like spring 9 used as a balance weight 8 is inserted in any one of ventilation slots 6 which are formed in the braking section 5 of a brake disc 1. Therefore, the balance weight will not comes off from the disc even upon high speed rotation although the balance weight is simply locked to ribs in the disc, and therefore, the structure of the brake disc may be made simple, and the attachment thereof may be also simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to brake discs, in particular brake discs of the ventilated type.

Prior Art Brake discs are mounted on wheels that rotate at high speeds and therefore require a high degree of balance.

The amount of unbalance of the finished brake disc is inspected using a measuring machine, and those that are within the standard are shipped as is. Brake discs that are out of the standard are conventionally drilled and polished at the point of heavy unbalance. Balance was achieved by performing shedding processing, etc., or conversely, various balance weights were added to the light points and fixed to achieve balance, and products that were within the unbalanced specifications were shipped and shipped. .

Problems to be Solved by the Invention The conventional unbalance solving means described above are time consuming and labor intensive, and there is a need for a means for easily bringing the unbalance amount within the standard in a short period of time. For example, when machining a point with heavy unbalance as mentioned above, it may be difficult to remove the necessary amount at once, and it is necessary to measure the amount of unbalance each time the machine tool and measuring device are removed. It is also necessary to transport the brake disc back and forth, which has the drawback that it takes time to resolve the unbalance.

In addition, when attaching balance weights to unbalanced fresh fish, machining of the mounting surface and bolt hole drilling are required, which requires additional machining time.

When gluing or welding, it is also necessary to process the mounting surface, and in this case, the degree of unbalance is small.

There was also the problem that it was not suitable for mounting balance weights.

Means for Solving the Problems The present invention solves the above-mentioned problem of attaching balance weights to unbalanced fresh fish, and the present invention solves the above-mentioned problems of attaching balance weights to unbalanced fresh fish. A unique solution is the brake disc type. In other words, in a pentilated brake disc, the unbalance around the axis of the brake disc is inserted from the radial pencillation center side of the disc, and is locked to the rib of the slot by elasticity in the expanding direction. By providing a brake disc that can be corrected using a coiled spring-shaped balance weight, a disc that can be easily corrected in a very short time even if the amount of unbalance of the brake disk is minute can be obtained.

Since the active spring type balance weight is hooked onto the rib, it does not fall out of the disc even when the disc brake rotates at high speed, and the measurement of the unbalance amount of the disk can be completed in an extremely short time.

Example An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, a pencillated brake disc 1 is disc-shaped and has a flange 4 with mounting holes 2, 2 and a center hole 3 drilled near the axis. ,
The brake part 5 near the outer edge has ventilators radially arranged.
Slot 6.6 is drilled and the adjacent be/chillation/
The slots 6.6 are separated by radial ribs 7.7.

The spring-shaped balance weight 8 has a coil spring shape as shown in FIGS. 3 and 4, for example, and has legs 10 and 10 at both ends of the coil 9.
The tip of the leg 10 is bent to form a hook 11.

Note that the leg 10.10 is the same as both legs 10.1 in FIG.
0 is biased in the direction in which the legs are spread in a V-shape in the axial direction of the coil 9, or in the direction in which the legs are spread in a V-shape around the axis of the coil 9, as shown in FIG. As shown in FIGS. 1 and 2, the legs 10, which are opened in a V-shape, are inserted into the unbalanced fresh fish of the brake disc 1 from the shaft center side, and the legs 10 are spaced apart from each other. , a spring-shaped balance weight 8 having an appropriate weight is inserted from the coil 9 side, and the hook 11 is secured to the inner end of the rib I.

The amount of unbalance of the brake disc 1 to which the spring-shaped balance weight 8 is attached is measured using a measuring machine, and if the correction amount is insufficient, the brake disc 1 is replaced with a heavier spring-shaped balance weight 8. If the correction is excessive, replace it with a lighter spring-shaped balance weight 8. All of the above exchanges can be performed in a short time on a fi11 regular machine.

Coil 9° leg 10 of the spring-shaped balance weight 8. The shape, size, weight, etc. of the hook 11 are prepared in advance within a usable range depending on the shape of the bench lane/slot 6, rib 7, etc. of the L/'P disk 1.

Effects of the Invention Since the present invention has the above-described configuration, the spring-shaped balance weight is simply elastically locked to the rib, and does not come out even when the disc brake rotates at a low speed, and the spring balance weight Since the shaped balance weight has an extremely non-pull structure, it is easy and inexpensive to manufacture, and correction of the unbalanced amount of the brake disc can be done simply by inserting and replacing the spring-shaped balance weight.

Assembly as a disc brake is easy and can be carried out without any problems.The spring-shaped balance weight is made of a coiled wire body, so even if it is inserted into a Reno Debe/Chire/Yon slot, it will not fit in the slot. The ventilation of the spring type balance weight is not hindered at all, and there is no problem with the Venoty Ray/Yon effect, and the heat dissipation of the spring-shaped balance weight itself is also extremely good due to the ventilation in the slot, and the spring properties are not inhibited at all. There is no risk of the weight being pulled out of the Benchley 7 slot, and since the spring balance weight itself is lightweight, it is possible to finely adjust the amount of unbalance. In this case, the coil is located close to the outer edge of the brake disc, and the center of gravity of the spring-shaped balance weight is located close to the outer edge of the brake disc. This provides various effects not found in brake discs with balance weights.

[Brief explanation of drawings]

FIG. 1 is a partial sectional view taken along the line I-1 in FIG. 2 of the embodiment, and FIG. 2 is a partial sectional view taken along the line ■-[ in FIG. FIG. 3 is a plan view of an embodiment of the balance weight, and FIG. 4 is a side view of the same. 1. Brake disk, 5. Benochley 7yo/slot, 7° rib, 8. Spring balance weight, 9. Coil.

Claims (1)

[Claims] In a ventilated brake disc, unbalance around the axis of the brake disc can be corrected by a coiled spring-shaped balance weight inserted into a ventilation slot and elastically locked to a rib. A brake disc with a balance weight featuring: