Safety linkage device for auxiliary brake air brake signal switch of instructional car

Abstract

The utility model relates to the technical field of vehicle brake devices, in particular to a safety linkage device for an auxiliary brake air brake signal switch of a learner-driven vehicle, which comprises a fixed base, a fulcrum rotating shaft, a transmission lever and a reset spring. The fulcrum rotating shaft is rotatably clamped in one set of adjusting clamping grooves, the rear portion of the transmission lever penetrates through the middle of the fulcrum rotating shaft in a swinging mode and is inserted into the fixed base, the front portion of the transmission lever is warped upwards and abuts against the lower surface of the auxiliary brake pedal in a sliding mode, and the electrical signal switch is installed in the fixed base. The rear end of the transmission lever is provided with a touch piece used for touching the electrical signal switch, and the reset spring is connected between the rear portion of the transmission lever and the front side wall of the box body of the fixed base. According to the device, through linkage arrangement, the brake lamp of the vehicle can be triggered to be lightened no matter the main brake or the auxiliary brake is stepped down, a brake prompt is sent to a following vehicle behind, and rear-end collision accidents of the vehicle are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to vehicle brake device technical field, concretely relates to a kind of coach car auxiliary brake air brake signal switch safety linkage device. BACKGROUND

[0002] Brake, commonly known as brake, is very important safety control device on vehicle, especially for heavy truck, usually need to use pneumatic auxiliary brake, air brake for short. Vehicle driving is a technology that needs to obtain driving license, and trainee needs to use special coach car during driving training, and also need to have instructor sitting in copilot seat to supervise and guide, and copilot seat of coach car is equipped with auxiliary brake device, simply called auxiliary brake, which is also the brake configuration unique to coach car, and auxiliary brake of small car coach car is generally connected with main brake of main driver seat through connecting rod, no matter main brake or auxiliary brake pedal is stepped on, brake light at the tail of vehicle is lit, and for some special vehicles such as military truck, auxiliary brake of coach car is not directly connected with main brake of main driver seat, and even when auxiliary brake is stepped on, brake light is not lit, lack of brake prompt to rear vehicle, and there is risk of rear-end collision, therefore, it is necessary to design a kind of coach car auxiliary brake air brake signal switch safety linkage device. UTILITY MODEL CONTENTS

[0003] In view of the above situation, the utility model provides a kind of coach car auxiliary brake air brake signal switch safety linkage device, which can realize the linkage control between auxiliary brake of coach car and main brake and brake light of vehicle, to reduce the occurrence of rear-end collision accident.

[0004] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0005] A kind of coach car auxiliary brake air brake signal switch safety linkage device, including auxiliary brake pedal and auxiliary brake linkage device installed below the auxiliary brake pedal. The auxiliary brake linkage device includes mechanical linkage assembly and electrical signal switch.

[0006] The mechanical linkage assembly includes fixed base, fulcrum pivot, transmission lever and return spring, the fixed base is a long rectangular box body structure with open top, a plurality of groups of sawtooth-shaped adjustment slots are symmetrically formed on the left and right side edges of the open top, the left and right ends of the fulcrum pivot are rotatably clamped in one of the adjustment slots, the rear part of the transmission lever is swingably crossed from the middle of the fulcrum pivot and inserted into the box body inside the fixed base, the front part of the transmission lever is upturned and slidably abuts on the lower surface of the auxiliary brake pedal.

[0007] The electrical signal switch is fixedly installed on the rear side wall of the box body of the fixed base, the rear end of the transmission lever is provided with a touch piece, when the auxiliary brake pedal is stepped on, the touch piece of the transmission lever can touch the electrical signal switch to send a linkage signal, and the reset spring is connected between the rear end of the transmission lever and the front side wall of the box body of the fixed base, and when the auxiliary brake pedal is released, the reset spring can pull the transmission lever to return to the initial position.

[0008] Further, the output signal line of the electrical signal switch is connected in parallel to the main brake output signal line terminal of the main driving position, so that the main brake and the auxiliary brake can both output brake signals to the brake light, and the brake light can be lighted by outputting signals no matter the main brake pedal or the auxiliary brake pedal is stepped on.

[0009] Further, the electrical signal switch adopts a normally open type travel switch, the touch piece is a scrollable roller one arranged at the lower end of the transmission lever, when the auxiliary brake pedal is stepped on, the roller one can touch and drive the input end of the travel switch to move and output a brake signal.

[0010] Further, the front end of the transmission lever is T-shaped and connected with a sliding middle shaft, the left and right ends of the sliding middle shaft are respectively provided with one rotatable roller two, and the lower surface of the auxiliary brake pedal is matched with a straight guide rail for guiding the rolling direction of the roller two, when the auxiliary brake pedal is stepped on or released and retracted, the roller two can roll straight along the straight guide rail.

[0011] Further, the adjusting clamping groove is a circular arc groove with a bottom inclined forward, the circular arc radius of the adjusting clamping groove is matched with the shaft radius of the fulcrum rotating shaft, and the fulcrum rotating shaft can be placed and clamped in different groups of adjusting clamping grooves to adjust the front and back positions.

[0012] Further, the left and right ends of the fulcrum rotating shaft are respectively coaxially fixed with a limiting clamping ring for preventing the left and right movement of the fulcrum rotating shaft, so that the fulcrum rotating shaft can be quickly and accurately positioned in the left and right directions.

[0013] Further, the transmission lever is a damping support rod with elastic length change and certain damping property, preferably a hydraulic support rod or an air support rod.

[0014] The utility model also includes other components that can make it normal use, which are all conventional means in the field, in addition, the devices or components not defined in the utility model, such as travel switch, hydraulic support rod, air support rod and auxiliary brake pedal of the coach car, all adopt the prior art in the field.

[0015] The utility model has the advantages of the following:

[0016] The safety linkage device for the auxiliary brake air brake signal switch of the coach vehicle can realize linkage control between the auxiliary brake and the main brake of the coach vehicle and the brake light of the vehicle, and the brake light of the vehicle can be triggered to light up no matter whether the main brake of the coach vehicle is stepped on by the main driver or the auxiliary brake is stepped on by the auxiliary driver, so that a brake warning is sent to the following vehicle, the rear-end collision accident of the following vehicle can be effectively prevented, and the safety during the driving practice of the student is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the safety linkage device for the auxiliary brake air brake signal switch of the coach vehicle in embodiment 1.

[0018] Figure 2 It is a structure schematic view of the safety linkage device for the auxiliary brake air brake signal switch of the coach vehicle in embodiment 2.

[0019] In the figure: 1, auxiliary brake pedal; 2, electrical signal switch; 3, fixed base; 4, fulcrum shaft; 5, transmission lever; 6, reset spring; 7, adjusting slot; 8, output signal line; 9, roller one; 10, input end of travel switch; 11, sliding shaft; 12, roller two; 13, linear guide rail; 14, limit snap ring. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be clearly and completely described below in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0021] It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the drawings shown, and are only for convenience of description.

[0022] Embodiment 1

[0023] As shown in the figure, a safety linkage device for the auxiliary brake air brake signal switch of the coach vehicle, comprising an auxiliary brake pedal 1 and an auxiliary brake linkage device installed below the auxiliary brake pedal. Figure 1 The mechanical linkage assembly comprises a fixed base 3, a fulcrum shaft 4, a transmission lever 5 and a reset spring 6. The fixed base is a long rectangular box structure with an open top, and a plurality of groups of sawtooth-shaped adjusting slots 7 are symmetrically formed on the left and right side edges of the open top. The left and right ends of the fulcrum shaft are rotatably clamped in one of the adjusting slots, the rear part of the transmission lever is swingably crossed from the middle of the fulcrum shaft and inserted into the box body inside the fixed base, and the front part of the transmission lever is upwardly raised and slidably abuts against the lower surface of the auxiliary brake pedal.

[0024] ​

[0025] The electrical signal switch is fixedly installed on the rear side wall of the box body of the fixed base, the rear end of the transmission lever is provided with a touch member, when the auxiliary brake pedal is stepped on, the touch member of the transmission lever can touch the electrical signal switch to send a linkage signal, the reset spring is connected between the rear part of the transmission lever and the front side wall of the box body of the fixed base, and after the auxiliary brake pedal is released, the reset spring can pull the transmission lever to return to the initial position.

[0026] The output signal line 8 of the electrical signal switch is connected in parallel to the main brake output signal line terminal (not shown in the figure) of the main driver position, so that the main brake and the auxiliary brake can both output brake signals to the brake light (not shown in the figure), and the brake light can be lit by outputting signals no matter whether the main brake pedal or the auxiliary brake pedal is stepped on. The main brake, the main brake output signal line terminal and the brake light all belong to the prior art in the field, and will not be described in detail here.

[0027] The electrical signal switch adopts a normally open type travel switch, and the touch member is a roller one 9 which is rollably arranged at the lower end of the transmission lever, when the auxiliary brake pedal is stepped on, the roller one can touch and drive the input end 10 of the travel switch to act and output a brake signal.

[0028] The front end of the transmission lever is T-shaped and connected with a sliding middle shaft 11, the left and right ends of the sliding middle shaft are respectively provided with a rotatable roller two 12, and the lower surface of the auxiliary brake pedal is matched with a straight guide rail 13 for guiding the rolling direction of the roller two, when the auxiliary brake pedal is stepped on or retracted and reset after being released, the roller two can roll straight along the straight guide rail. A groove is formed in the middle of the wheel surface of the roller two in the circumferential direction.

[0029] The adjusting slot is a circular arc groove with the bottom inclined forward, the circular arc radius of the adjusting slot is matched with the shaft radius of the fulcrum shaft, and the fulcrum shaft can be placed and clamped in different groups of adjusting slots to adjust the front and rear positions. By adjusting the position of the fixed base of the linkage device and the position of the corresponding adjusting slot of the fulcrum shaft, the roller two at the upper end of the transmission lever can be adapted to the auxiliary brake pedal, and the roller one at the lower end of the transmission lever can ensure that the input end of the travel switch of the electrical signal can be effectively touched to output the brake signal to the brake light.

[0030] The left and right outer sides of the left and right ends of the fulcrum shaft are respectively coaxially fixed with a limiting snap ring 14 for preventing the left and right movement of the fulcrum shaft, so that the fulcrum shaft can be quickly and accurately positioned in the left and right directions, and the touch member at the lower end of the transmission lever can be accurately aligned and touched with the input end of the travel switch.

[0031] When the auxiliary brake pedal is stepped on, the front end of the transmission lever is forced to press down, the roller two and the linear guide on the lower surface of the auxiliary brake pedal are relatively rolled, the roller one on the rear end of the transmission lever is rolled up and tilted back, and then the input end of the travel switch is actuated, the normally open point of the travel switch is closed, and a brake light is turned on to send a control signal; Because the output signal of the auxiliary brake linkage device is in parallel with the output signal of the main brake, whether the main driver of the coach steps on the main brake or the auxiliary driver steps on the auxiliary brake, the vehicle brake light can be triggered to light up, sending a brake reminder to the following vehicle to prevent rear-end collisions.

[0032] Embodiment 2

[0033] As Figure 2 shown, based on embodiment 1, the difference between this embodiment and embodiment 1 is only that the transmission lever adopts a length-elastic telescopic and damping support rod, such as a hydraulic support rod or a gas support rod. It should be noted that, Figure 2 The hydraulic support rod and the gas support rod are hidden in the auxiliary brake pedal, and they are all prior art in the field, which will not be described in detail here.

[0034] The purpose of the telescopic damping support rod of the transmission lever is to prevent the transmission lever from being stuck and the auxiliary brake pedal from being stuck when the linkage device below the transmission lever is stuck, so that the pedal can be stepped down hard and not stepped down, and then a safety accident may occur; Instead, even if the linkage device below the transmission lever is stuck, the auxiliary brake pedal can still be stepped down hard, and then the vehicle can be stopped in time, at which time the telescopic length change of the transmission lever is relied on to allow the auxiliary brake pedal to be stepped down hard to a certain distance of movement stroke.

[0035] The technical scheme of the utility model is not limited to the above specific embodiments, and many modifications and changes are obvious to those skilled in the art without deviating from the scope and spirit of the described embodiments, and any technical modification made within the spirit and principles of the utility model falls within the protection scope of the utility model.

Claims

1. A safety linkage device for a secondary brake signal switch of a coach car, comprising a secondary brake pedal and a secondary brake linkage mounted below the secondary brake pedal, characterized in that: The auxiliary brake linkage device comprises a mechanical linkage assembly and an electrical signal switch, the mechanical linkage assembly comprises a fixed base, a fulcrum rotating shaft, a transmission lever and a return spring, the fixed base is a long rectangular box structure with an open top, a plurality of groups of sawtooth-shaped adjusting clamping grooves are symmetrically formed on the left and right side edges of the open top, the left and right ends of the fulcrum rotating shaft are rotatably clamped in one of the adjusting clamping grooves, the rear part of the transmission lever is swingably crossed from the middle of the fulcrum rotating shaft and inserted into the box body inside the fixed base, the front part of the transmission lever is upwardly raised and slidably abuts against the lower surface of the auxiliary brake pedal, the electrical signal switch is fixedly installed on the rear sidewall of the box body of the fixed base, the rear end of the transmission lever is provided with a touch member capable of touching the electrical signal switch to send a linkage signal, and the return spring is connected between the rear part of the transmission lever and the front sidewall of the box body of the fixed base for pulling the transmission lever to reset.

2. A safety linkage for a secondary brake signal switch of a coach vehicle as claimed in claim 1, wherein: The output signal line of the electrical signal switch is connected in parallel to the main brake output signal line terminal of the main driver seat.

3. A safety linkage for a secondary brake signal switch of a coach vehicle as claimed in claim 1 wherein: The electrical signal switch adopts a normally open type travel switch, and the touch member is a roller one rotatably arranged at the lower end of the transmission lever.

4. A safety linkage for a secondary brake signal switch of a coach vehicle as claimed in claim 1 wherein: The front end of the transmission lever is T-shapedly connected with a sliding middle shaft, the left and right ends of the sliding middle shaft are respectively provided with a rotatable roller two, and the lower surface of the auxiliary brake pedal is cooperatively provided with a straight guide rail for guiding the rolling direction of the roller two.

5. A safety linkage for a secondary brake signal switch of a coach vehicle as claimed in claim 1 wherein: The adjusting clamping groove is a circular arc-shaped groove with a forward inclined bottom, and the circular arc radius is matched with the shaft radius of the fulcrum rotating shaft.

6. A safety linkage for a secondary brake signal switch of a coach vehicle as defined in claim 1, wherein: The left and right outer sides of the fulcrum rotating shaft are respectively coaxially fixed with a limiting clamping ring for preventing the fulcrum rotating shaft from moving left and right.

7. A safety linkage for a secondary brake signal switch of a coach vehicle as claimed in any one of claims 1 to 6, wherein: The transmission lever is a damping support rod with an elastic length change.

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