阅读说明：本技术 驻车制动操作装置及方法 (Parking brake operation device and method ) 是由 弗洛里安·库布勒 于 2018-11-29 设计创作，主要内容包括：它是用于致动驻车制动器的装置(1),特别是农用车辆、商用车辆或工作机械。其具有带踏板(3)的踏板杆(2),具有夹紧机制。该夹紧机制包括至少一个凸轮从动件(4),带有枢轴销(6)踏板杠杆(2)可枢转地安装在其上,并且具有凸轮从动件(11)的踏板杠杆(2)偏置的恢复装置(8)形成在具有特征曲线的周向槽中的切换心脏(18)中(12)的曲线元件。特征曲线(12)包括用于驻车制动器的第一部分(13),用于供应闭合驻车制动器的第二部分(14),其中驻车制动器被锁定的第三部分(15)用于返回打开的驻车制动器的第四部分(16)。其中,凸轮构件(4)形成有至少一个正向引导机(17)和特征曲线(12)。(It is a device (1) for actuating a parking brake, in particular an agricultural vehicle, a commercial vehicle or a work machine. It has a pedal lever (2) with a pedal (3) with a clamping mechanism. The clamping mechanism comprises at least one cam follower (4) on which the pedal lever (2) is pivotably mounted with a pivot pin (6), and a restoring means (8) of the pedal lever (2) bias with the cam follower (11) forms a curvilinear element in the switching heart (18) in a circumferential groove with a characteristic curve (12). The characteristic (12) comprises a first part (13) for the parking brake, a second part (14) for supplying the parking brake closed, wherein a third part (15) of the parking brake locked is used for returning a fourth part (16) of the parking brake open. Wherein the cam member (4) is formed with at least one positive guide (17) and a characteristic curve (12).)

1. A device (1) for actuating a parking brake, in particular an agricultural vehicle, a commercial vehicle or a work machine, having a pedal lever (2) with a pedal (3), having a clamping mechanism comprising at least one cam follower (4) with a pivot pin (6); -pivotally mounting and returning means (8) at the pedal lever (2), the cam follower (11) exerting a force on the pedal lever (2), such as a characteristic curve switching heart (18), formed in the circumferential groove (12) the cam member (4) is running, wherein the characteristic curve (12) comprises a first part (13) for the parking brake, a second part (14) for feeding the parking brake closed, wherein a third part (15) and a fourth part (16) where the parking brake is locked are for returning the parking brake open, wherein the cam follower (4) has at least one forward guide (17) and the characteristic curve (12) is formed such that the cam follower (11) can be turned from the first part (13) to the second part (14) when the pedal (3) is in a raised position with the parking brake open; the third portion (15) can be locked in engagement with the parking brake, and during a second actuation of the recessed pedal (3), the cam follower (11) can be transferred from the third portion (15) to the fourth portion (16) until it returns to the position shown in the figures; the first part (13) is provided with an open parking brake, which ensures safety.

2. The device (1) according to claim 1, wherein the device (1) comprises a device box (19), wherein in particular the pedal lever (2) is pivotably mounted on the pivot pin (6) over the width of the device box (19); and further preferably a return spring (9) designed as a return means (8) biasing the pedal rod (2) fixed to the cross bar (10) across the width of the device case.

3. Device (1) according to claim 1, wherein the first portion (13) and in particular the third portion (15) have in the cam follower (4) a concave form of a characteristic curve (12) substantially in the direction of the suspension axis (20) of the cam follower (4) with at least one, preferably two diameters (11) of the cam follower.

4. Device (1) according to claim 1, characterized in that the pedal lever (2) is designed as a single lever part in the device case (4) which is directly connected with the cam follower, in particular with respect to a hole (22) in the protruding lever arm (21) formed by the pivot bearing, so that the lever arm (21) carries the pivot pin (6) with respect to the pivot bearing (7) for controlling the parking brake link with the pivot hinge (23).

5. Device (1) according to claim 1, wherein said forward guide (17) comprises at least one first spring (24), preferably two springs (24), acting as a torsion mechanism acting on said cam follower (4), said torsion mechanism being fixed on a transverse bar (30).

6. Device (1) according to claim 1, wherein the forward guide (17) is arranged on a lever, in particular a transverse lever (30), on a device box (19), at least one further second tension spring (25) on the same attack axis (26) on the cam follower (4) in the opposite direction to the first tension spring (24).

7. Device (1) according to claim 1, wherein the forward guide (17) comprises at least one blocking guide, such that the follower (11) circulates endlessly from the first portion (13) to the fourth portion (16) and provides at least one mechanical barrier; thus, the return movement of the cam follower (11) is locked in the previous part, in particular the mechanical lock comprises a ratchet.

8. Device (1) according to claim 1, characterized in that cam followers with an internally formed characteristic curve (12) are formed on the left (5) and right (4) in each case, which characteristic curve (12) is formed as a groove parallel to the side surface of the device case (19).

9. Method for actuating a device (1) for a parking brake, in particular an agricultural vehicle, a commercial vehicle or a work machine; a pedal lever (2) with a pedal (3), with a clamping mechanism comprising at least one cam follower (4), with a pivot pin (6); a pedal lever (2) is pivotably mounted thereon, and a return spring biasing the pedal lever (2) has a cam follower (11) extending in a switching heart (18) forming a circumferential characteristic of a cam member, wherein the characteristic a opens a first part (13) of the brake, closes a second part (14) of the brake application, and a third part (15), wherein the parking brake is locked and has a fourth part (16) for returning to the open parking brake; wherein the cam follower has at least one positive guide (17) and a characteristic curve formed such that, when the first actuation of the pedal (3) is in the raised position and the parking brake is on, the curve follower element (11) is guided from the first portion (13) in the second portion (14) and in the third portion (15) into engagement with the parking brake embedded, during the second actuation of the recessed pedal (3) the cam follower (11) being transferred from the third portion (15) to the fourth portion (16) until it returns to the first portion (13) to be fixed with the parking brake open.

10. Method for manufacturing a device (1) according to claim 1, wherein the pedal rod (2) is made by flame cutting as a firing means and welded to the pivot pin; the return means is in the form of the return spring (9) in the bore (8); the bending elements (4, 5) from the pedal lever (2) mounted on the suspension axle (2) on both sides of the pedal lever (2) have a cam follower (11) suspended such that the cam follower (11) runs in a groove of a curve (12) and is arranged as a cross-bar (30) on the cam follower (4) below the hole (8) and perpendicular to the direction in the pedal lever (2), as a striker axle (26) of a positive guide mechanism, a first spring (24) and a second spring (25) of opposite direction being fixed with cross-bars (30, 31), respectively.

Technical Field

Described herein is a device and method for parking brake operation, in particular for an agricultural vehicle, a commercial vehicle or a work machine, having a pedal lever with a pedal and a clamping mechanism. Methods of making the foregoing devices are also described.

Technical Field

The clamping mechanism is a mechanical actuator that can occupy two stable layers under compressive forces. The clamping mechanism may be implemented in a rotational or translational manner. The translational clamping mechanism is also implemented in conjunction with a switched heart as a mechanical component. The switching heart typically has circular closed grooves with islands forming the shape of the heart. The pin passes as a background when the switch is actuated in four stages around the circular closed slot. Switching the heart depends on the direction of the pulling force, so the suspension is arranged to rotate 180 °, for example in a clamping mechanism.

JP 2009234352 a describes a parking brake operating device having a clamp mechanism and a four-bar link, which are connected at three pivot points and each of which is suspended at an end. The ejector rod is provided with two return springs and an operating cable. The two return springs act in the same direction on the same pivot point through two different lever arms. The second, following, upper rod is guided in the cam body with the cam follower body. The cam body has an oblong cam portion with a lower shaft hook with a cam follower guided on an outer cam surface. The cam follower body has two rest positions. One position corresponds to an open brake and the second locked position corresponds to a set braking position. The pedal is arranged at the lowest position.

Described herein is a device and a method for parking brake operation, in particular for agricultural vehicles, commercial vehicles or work machines, which is a device having a simple assembly, efficient operation and a simplified role in production.

Disclosure of Invention

Described herein is a device and a method for parking brake operation, in particular for an agricultural vehicle, a commercial vehicle or a work machine, formed with a pedal lever with a pedal having a clamping mechanism, in particular of translational design, comprising at least one cam follower with a pivot pin. A pedal lever is pivotally mounted on the pivot pin and has a return means biasing the pedal lever, wherein a cam follower runs in a trained switch core circumferential slot, having the characteristic curve of a cam member, wherein a first portion of the characteristic curve is open parking brake, a second portion is for supplying a closed parking brake, a third portion wherein the parking brake is locked, and a fourth portion to return to an open parking brake. The cam follower is formed with at least one positive guide and a characteristic curve such that upon a first actuation of the pedal in the raised position with the parking brake open, the cam follower may be diverted from the first section to the second section and depressed and locked in the third closed parking brake section, and in a second actuation of the depressed pedal, the cam follower from the third section may be converted into a fourth section until it may be fixed again in the first section with the parking brake open.

More preferably, the device comprises a device case, in particular a pivot pin, on which a pedal lever is tiltably mounted, arranged across the width of the device case. A more preferred option is to form a return device return spring that biases the pedal lever and is secured to the cross bar across the width of the device case.

The device can thus be constructed as a simplified module in a working machine.

The mode of operation of the device is substantially reduced to two pivotable components, the pedal lever and the cam follower acting as a clamping mechanism and simplified. These two components are special components. All other components are basically standard components. The pedal lever is therefore basically designed as the only pivotable lever part in the device housing, which is connected to the curve element. The pedal lever is preferably formed in an angular U-shape with a long base length in side view. The pedal lever has a hole and a pivot bearing on a specially projecting lever arm links with the parking brake controlled by the pivot bolt and rotates the U-shape of the hinge at the leg end.

In order to increase the effectiveness of the device and the operating method, the first and in particular the third portion have a concave form in the cam follower, with at least one, preferably two, diameters of the cam follower substantially in the direction of the suspension axis of the cam follower. This creates an improved tactile sensation at a stable pedal position and better communicates the position of the pedal to the user.

Drawings

Possible embodiments will now be explained in more detail with reference to the accompanying schematic drawings, which show:

FIG. 1 is a perspective view of the device in a release operating state with the parking brake open;

FIG. 2 is a perspective view of the device with the parking brake closed in an engaged state.

Detailed Description