JPS5965629A - Brake for car - 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 The present invention relates to a brake for a vehicle, and is applicable to both a guided vehicle, that is, a self-propelled vehicle, and a towed vehicle such as a caravan or a trailer. In the following, a trailer will be explained as an application example of the present invention.

Trailers typically have hydraulically or pneumatically operated brakes connectable to the brake system of the original vehicle for activation in response to brake pedal activation. Such brakes are activated only when the trailer is connected to a vehicle or tug and remain activated only as long as the brake pedal is depressed. However, there is a need to provide an independently controlled emergency braking system so that the brakes can be activated or maintained when the trailer is pulled away from the vehicle.

Such independent braking devices have existed in the past.

But that was problematic if the trailer had disc brakes. In such cases, it has been difficult to add an independently actuated brake system to the existing trailer brake system for a number of reasons. Generally, such independently actuated braking systems required that the trailer be provided with some type of braking system that was originally attached to the trailer.

It is an object of the present invention to provide a brake that can be easily installed on vehicles with existing disc brakes and that can be operated independently of the disc brake system.

According to the invention, the vehicle brake comprises a disc which rotates with the vehicle and is fixable to the vehicle, a housing which also extends around the edges of the disc, and mounting means for connecting the housing to a support structure. a caliper having at least one caliper supported by the Uno-Using for relative movement toward and away from the side surface of the disc and responsive to the brake application means to press against the side surface.
a brake band extending around at least a portion of the periphery of the disc and having a backing member and a friction lining attached to the backing member and engageable with a side edge surface of the periphery of the disc; and an activation member connected to both the caliper and the band and operable to move the band, thereby bringing the friction lining into braking engagement with the side edge surface.

These essential and other features of the invention are described in detail in the following specification with reference to the accompanying drawings. However, it should be understood that the drawings are merely for detailed explanation of the invention and are not intended to limit the invention.

A specific example will be described below.

In the exemplary construction shown in FIG. 1, this emergency brake has a band 1. This band is a wheel (not shown)
completely surrounds the brake disc 2 and is supported by the disc brake caliper assembly 3. 1st to 5th
Although the disc brake shown in the figure is of a sliding caliper type, the present invention can also be applied to other disc brakes and is mounted on the caliper 3 depending on the force. The anchor 4 has a fixing member 5 as shown. This fixing member 5 is located between the disc pads 7 and 8.
is on a sliding or guiding surface 10 of the housing 6, along which a backing plate 11, 12 for each disc pad 7', 8 is movably arranged. Preferably, the radially outermost surface 13 of the fixing member 5 is curved so as to be substantially parallel to the edge surface 9 of the disc 2, although this is not essential. The fixing member 5 is arranged so as not to interfere with the normal sliding movement of the caliper housing 6.

As shown, the band J consists of a flexible metal strip 14 which has a suitable friction lining 1 on its inner surface.
It is equipped with 5. A portion 16 of the metal strip 14 without a friction lining 15 overlies the curved outer surface 13 of the fastening member 50 and extends beyond the sides of the caliper housing 60. Obi section 16 that does not have this lining
have a pair of ends, the ends 18 of which are connected to a fixed support 19. As shown, the fixed support 19 consists of an arm 20 fixed to the caliper housing 6 which extends laterally therefrom and extends beyond the edge surface 9 of the disc 2 and has a bracket 21 at its outer end. have. The band end 18 is a stop around a bin 220 which is rotatably mounted on a bracket 21 as shown in FIG.

In the configuration shown, the arm 20 is fixed to two bolts or studs 31 forming part of the caliper housing 3. These studs 31 provide a means of securing the gallop housing 6 to a suitable support structure 32 (FIG. 1). This disc brake is an ideal caliper type, so
The maggots 6 are arranged to have limited movement on the studs 31 in the axial direction of these studs 31. This can be obtained by a known method.

Attached to the opposite end 24 of the metal body 14 is an activation member 23, which in the fitted state of the brake band is preferably adjacent to the fixed end 18 as shown in FIGS. 1 and 4. be positioned. In the particular device shown, the activation member 23 is rotated with the pin 2.
2, and the opposite end 24 is fixed to member 23 at a position radially remote from the pivot axis of pin 22. However, it is not essential that the activation member 23 be able to pivot about the same axis as the axis of the pin 22.

The band end 24 is also wrapped around a pin 25 which is secured to or forms part of the activation member 23.

Pivotal movement of the activation member 23 is obtained via intermediate means, such as the pin 22 shown, or via a lever 26 connected directly to the member 23.

A releasable ratchet or pawl device (not shown) is provided to cooperate with the lever 26 to releasably hold the lever in the brake application position.

A spring 27 or other biasing means is also provided to force the lever 26 into the brake release position.

In this embodiment, the friction lining 15 is connected to the activation member 23.
and the side of the caliper housing 6 remote from said member 23 over a substantial portion of the length of the brake band 1 .

Preferably the friction lining 15 extends over at least 50 degrees of the disc circumference. At least one guide 28 is provided on the band 1, which prevents the band 1 from substantially lateral movement relative to the disc 2. This guide 28 is U-shaped as shown in FIG. 5 and is fixed to the metal strip 14 so that the guide 28 receives the peripheral portion of the disk between its side walls 29. . On the inner surface of both side walls 29, a friction lining 30 is located centrally around the periphery of the isk 2 and is assisted by a guide 28 in order to minimize wear and noise. Therefore, the proper operation of the disc brake is not hindered, and the entire device is relatively small and lightweight. The metal components of the band brake 1 may be constructed or treated to withstand the ingress of salt water. Due to such an installation of the brake band 1, the reaction load or drag force resulting from the braking action is transmitted to the caliper 3, and the activation lever 26 and the support arm 20 carry only the load necessary for the braking action.

Figures 6 and 7 show another construction of an emergency brake according to the invention, in which parts corresponding to the previously described construction are designated with like numerals in the 100 series. The disc brake shown in FIGS. 6 and 7 is also of the sliding or floating caliper type;
3 has a bracket l-133 secured to the support structure by studs 131. Bracket 133
Pins 134 secured to and extending laterally therefrom provide an attachment means for the caliper housing 106 such that the housing 106 has limited sliding movement along these pins 134. It is now possible.

” In the two-strand structure, the brake band is attached to bracket 1.
Preferably, it consists of two parts 10C, 10IA pivotally connected to each side of 33. That is, the end 118 of each band portion 101 (L, 101A) is fixed to the bracket 133 by a pin 122.2
The two band portions 10C, 10IA extend into a circular portion of the peripheral edge surface 1090 of the disk in close proximity to each other, and both portions have ends 124 connected at 125 to respective activation levers 126. As shown, these two levers 126 are each pivotally mounted on a respective stud 131, and the levers 126 are moved toward and away from each other to apply and release the emergency brake, respectively. Appropriate measures are in place.

The brake described above can also be used with disc brakes other than sliding head type brakes. It can also be used in disc brakes with fixed oscillating or pivoting or pivoting head calipers, for example where the band fixing member utilizes the pivoting of the oscillating caliper.

Furthermore, band guides as described with respect to FIGS. 1-5 may be unnecessary if the brake system has a back plate 235 as schematically illustrated in FIG. 8. In the illustrated embodiment, band 201 is restricted from substantial lateral movement relative to disc 202 by fingers 236 secured to both backing plate 235 and band band 214. The fingers 236 are flexible and arranged to otherwise allow the band 201 to perform the necessary radial movement.

It will be understood that various modifications and/or additions may be made to the structure, arrangement, components, etc. described above without departing from the spirit of the invention as defined by the appended claims.

Generally speaking, this emergency vehicle brake comprises a disc (2) fixed to a wheel and a caliper device (3) straddling the peripheral edge of the disc (2).
have. A pair of friction pads (718), several of which are applied to the caliper device (3), are arranged to engage each opposite side of the disc edge upon actuation of the braking means. The brake band (1) is supported by a caliper device (3) such that it extends around at least a portion of the circumference of the disc (2) and also has an edge surface (9) therearound.
a friction lining (15) arranged to engage the actuating member (23) so as to brake the band (1) against the peripheral edge surface (9) of the disc (2) independently of the braking means. Operable to engage or disengage.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of one form of a brake device embodying the present invention, FIG. 2 is a plan view of FIG. 1 taken along the line ■-■ in FIG. 1, and FIG. FIG. 4 is a perspective view of the band brake activation member in FIG. 1, FIG. 5 is a sectional view taken along line V-V in FIG. 1, and FIG.
The drawings are similar to Fig. 1 and Fig. 7 showing another embodiment of the present invention.
The figure is a top side view of FIG. 6, and FIG. 8 is a sectional view of still another embodiment of the present invention. Explanation of symbols 1: Band 2 Brake disc 3: Caliper 4: Sliding anchor 5: Fixed member
6: Caliper nose housing 7.8: Disc pad 9: Peripheral edge surface 14: Metal band 15: Friction lining 16: Metal band portion 19: Fixed support 20:
Arm 23: Starting member 25: Pin 26: Lever 29: Side wall Patent applicant Repco Ltd.

Claims (13)

[Claims] (1) consisting of a disc affixed to the wheel for rotation therewith; and a housing straddling the edge of the disc carrying means for connecting the housing to a support structure. a caliper device and at least one friction pad supported by the housing for relative movement toward and away from a side surface of the disc and responsive to brake application means pressing against the side surface, the brake band ( 1) extends around at least part of the periphery of the disc (2), said brake band (1) consisting of a backing member (14) and a friction lining (15), said friction lining (15) extending around at least part of the periphery of the disc (2), said friction lining (15) 14
) and capable of engaging the circumferential edge surface (9) of said disc, and the activation member (23) is attached to the caliper device (3).
and a band (1) and operable to move said band (1), thereby causing friction lining (1) to move.
5) is in braking engagement with the edge surface (9). (2) The brake according to claim 1, wherein the activation member (23) can operate independently of the brake applying means. (3) The brake band (1) includes guide means (28) which cooperate with the disc (2) to effect substantial lateral movement of the band (1) with respect to the disc (2). The brake according to claim 1 or 2, which can be restricted. (4) The guide means (28) comprises a plurality of finger-like elements (29)
, wherein the elements are provided along both longitudinal sides of the backing member (14) and project from the backing member (14) to overlap adjacent sides of the disc (2). The brake described in paragraph 3. (5) Each finger-like element (29) has a portion of wear-resistant material fixed thereto in a mating manner to the disk (2). brake. (6) The backing member (j4) is the housing (6)
extending across and retracting into a fixing member (5) which slidably engages the housing (6) and connects the disc (1) between the housing (6) and the band (1). 2)
The brake according to claim (1) or (2) or (3) or (4) or (5), characterized in that the brake is capable of relative movement in the axial direction of the brake. (7) Band backing member (14) Fixed end (18)
and a movable end (24), the fixed end (18) is fixed to the caliper device (3), and the movable end (24) is connected to the activation member (2).
3) such that the movable end pulls the band (1) against the edge surface (9) or moves the band (1) away from the edge surface (9) depending on the direction of movement of the activation member (23). Claim 1, characterized in that it is movable with respect to the fixed end (18) together with the activation member (23).
1) or (2) or (3) or (4) or (5) or (
Brake described in section 6). (8) An arm (20) is fixed to the caliper device (3) and extends laterally therefrom, with the fixed end (18)
0) is attached to the outer end (21) of the starting member (23).
includes a lever (26), and the lever (26) is connected to the arm (
20) at or near the attachment point of the fixed end (18), the lever (26) at a position where the movable end (24) is laterally spaced from the axis of the pivot point (22); 8. The brake according to claim 7, wherein the brake is attached to. (9) Part with two bands (101σ, 101..6)
, each part having a respective backing member (114,) and a friction lining (115) attached thereto, these band parts (IOIQ, 101h) connecting the peripheral part of the disc and the caliper device (103). Extending on both sides, each band is characterized in that it has a fixed end (1, 18) connected to a caliper device (103) and a movable end (124) connected to an activation member (123). A brake according to claim (1) or (2) or (3) or (4) or (5). (10) The activation member (123) has two levers (126)
each of these levers being pivotally connected to the caliper device (103) at each point (131) and each of the band portions (
10. Brake according to claim 9, characterized in that the levers (101a, 101h) are connected to each one of the levers (126) at a position (125) remote from the reading point (103). (11) At least two mounting means) (31)
(1) or (2) or (3) or (4) or ( 5) or (6) or (7) or (8) or (9) or the brake described in (10). (12) The mounting means comprises a bracket (133), at least two bolts (131) passing through the platen (133) for fixing the platen (133) to the support structure, and the bracket (133). ) and extending from the housing (102) in the axial direction of the disc (102).
6) is slidably mounted on the pin (134) for limited movement relative to the pin in the axial direction.
) or (4) or (5) or (6) or (7) or (8
) or the brake described in item (9) or (10). (13) Claims attached to the indexed vehicle (1)
) or (2) or (3) or (4) or (5) or (6
) or (7) or (8) or (9) or (10) or (
The brake described in item 11) or (12). (1(a) Claims attached to index vehicle (1)
) or (2) or (3) or (4) or (5) or (6
) or (7) or (8) or (9) or (10) or (
The brake described in item 11) or (12).