CN111055679A

CN111055679A - Clutch pedal mechanism of heavy commercial vehicle

Info

Publication number: CN111055679A
Application number: CN201911364807.2A
Authority: CN
Inventors: 范彩红; 李文君; 许佳成; 张子强; 薛秋生; 杨国玉
Original assignee: Sinotruk Jinan Power Co Ltd
Current assignee: Sinotruk Jinan Power Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-24
Anticipated expiration: 2039-12-26
Also published as: CN111055679B

Abstract

The invention discloses a clutch pedal mechanism of a heavy commercial vehicle, which comprises a pedal, a combined bracket and a master cylinder, wherein the combined bracket comprises a bottom plate, the bottom plate is provided with a mounting plate and a support plate, the pedal is connected with a pedal arm, one end of the pedal arm is fixedly connected with a pedal rotating shaft, two ends of the pedal rotating shaft are connected with the support plate, the master cylinder comprises a pump body and a pump body push rod, the pump body is connected with an oil tank, a mounting hole is formed in the mounting plate, the pump body penetrates through the mounting hole, a connecting plate is sleeved on the outer side of the pump body and is arranged at the upper end of the mounting plate, the connecting plate is connected with a connecting lug of the pump body, a return spring is sleeved on the outer side of the push rod, a limit ring is arranged on the push rod, one end of the return spring is connected with the limit ring, the other end of the, and the bottom plate is provided with a signal switch matched with the induction ring.

Description

Clutch pedal mechanism of heavy commercial vehicle

Technical Field

The invention relates to the technical field of clutch pedals of commercial vehicles, in particular to a clutch pedal mechanism of a heavy commercial vehicle.

Background

At present, heavy commercial car mostly adopts the combination footboard, the separation and reunion promptly, the braking, the throttle is all adorned on a combination footboard support, the combination footboard after the integration does benefit to whole car rapid Assembly, but present combination footboard structure dismouting difficulty, it is inconvenient to maintain, for example, owing to receive driver's cabin body skeleton influence, owing to receive the restriction in the narrow and small space of driver's cabin, it is great to carry out the degree of difficulty of dismantling fixed clutch master cylinder from the driver's cabin, need to make up the footboard and wholly pull down, just can maintain the clutch master cylinder, greatly increased maintenance time, there is the maintenance difficulty, there is the phenomenon of the big dismantlement of little maintenance. In addition, the existing combined pedal is complicated in structure and heavy, and the difficulty in dismounting and maintenance is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the clutch pedal mechanism of the heavy commercial vehicle, which realizes the independent disassembly of the master cylinder on the premise of not disassembling the whole pedal, and the assembly of the master cylinder can be completed by a maintenance worker by unscrewing the bolt for fixing the master cylinder from the outside of the cab, thereby greatly improving the assembly efficiency, saving the time and labor force and solving the problems of small maintenance and large disassembly; in addition, the pedal mechanism is simple and compact in structure, light in weight design is achieved, space is saved, and overhauling and assembling are further facilitated.

In order to achieve the purpose, the invention provides the following technical scheme:

a clutch pedal mechanism of a heavy commercial vehicle comprises a pedal, a combined bracket and a master cylinder, wherein the combined bracket comprises a bottom plate, a mounting plate and a support plate are arranged on the bottom plate, a pedal arm is connected onto the pedal, a pedal rotating shaft is fixedly connected to one end, far away from the pedal, of the pedal arm, the two ends of the pedal rotating shaft are rotatably connected with the support plate, the rotating angle of the pedal rotating shaft is 25-28 degrees, the master cylinder comprises a pump body and a pump body push rod, an oil tank is connected onto the pump body, a mounting hole is formed in the mounting plate, the pump body penetrates through the mounting hole, a connecting plate is sleeved on the outer side of the pump body and is arranged at the upper end of the mounting plate, the connecting plate is connected with a connecting lug of the pump body through a bolt, a return spring is sleeved on the outer side of the push, the pedal rotating shaft is provided with a rocker arm and an induction ring, one end of the push rod, which is far away from the pump body, is hinged with the rocker arm, and the bottom plate is provided with a signal switch matched with the induction ring.

Preferably, the pedal rotating shaft is provided with an upper limiting plate and a lower limiting support, the bottom plate is provided with an upper limiting bolt and a lower limiting bolt which are located on two sides of the pedal rotating shaft respectively, the upper limiting plate is matched with the upper limiting bolt, and the lower limiting support is matched with the lower limiting bolt.

Preferably, the upper ends of the upper limiting bolt and the lower limiting bolt are both provided with rubber sleeves.

Preferably, the rotation angle of the pedal spindle is 26.5 °.

Preferably, the bottom plate is provided with a fixing hole for fixing the signal switch, and the signal switch is an electromagnetic signal switch.

Preferably, the side wall of the induction ring is provided with a convex bulge, and the bulge is matched with the signal switch.

Preferably, the side wall of the limit ring is provided with a fixing groove, the outer side of the return spring is sleeved with a corrugated dust cover, one end of the dust cover is buckled in the fixing groove, and the other end of the dust cover is sleeved on the outer side of the pump body.

Preferably, a spring seat is arranged at the end part of the pump body, and a groove matched with the return spring is arranged on the spring seat.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the independent disassembly of the master cylinder is realized on the premise of not disassembling the whole pedal, and the assembly of the master cylinder can be completed by a maintenance worker unscrewing the bolt for fixing the master cylinder from the outside of the cab, so that the assembly efficiency is greatly improved, the time and the labor force are saved, and the problem of small maintenance and large disassembly is solved; in addition, the pedal mechanism is simple and compact in structure, light in weight design is achieved, space is saved, and overhauling and assembling are further facilitated.

2. According to the invention, the return spring is directly sleeved on the pump body push rod, so that the structure is more compact, the spatial arrangement is more organized, the return spring is sleeved on the pump body push rod, the problem of spring connection and unhooking when external force is applied can be avoided, the reliability of the fixation of the return spring is ensured, meanwhile, the return spring is limited to be only horizontally stretched and compressed, the bending is avoided, and the service life is prolonged.

3. The pedal rotating shaft angle limiting device has the advantages that the upper limiting plate is matched with the upper limiting bolt, the lower limiting bracket is matched with the lower limiting bolt, the pedal rotating shaft angle is limited, the structure is simple, the cost is low, the rotating angle of the pedal rotating shaft can be adjusted by adjusting the upper limiting bolt and the lower limiting bolt, and the adjustment is convenient.

4. According to the invention, the rubber sleeves are arranged at the upper ends of the upper limit bolt and the lower limit bolt, so that a certain buffer effect can be achieved when the rubber sleeves collide with the upper limit plate and the lower limit bracket, the noise is reduced, and the comfort level is improved.

5. According to the invention, the corrugated dust cover is sleeved outside the return spring, and covers the spring, so that dust can be prevented from entering the pump body, and the use safety of the spring is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a left side view of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a schematic view of the connection between the pedal and the pedal shaft;

FIG. 6 is a partial cross-sectional view of the master cylinder;

FIG. 7 is a schematic structural view of a composite support;

fig. 8 is a schematic structural diagram of an inductor loop.

In the figure: 1-a pedal; 101-a pedal arm; 2-a combined bracket; 201-a backplane; 202-a mounting plate; 203-mounting holes; 204-a support plate; 205-fixation holes; 3-upper limit bolt; 4-pedal spindle; 401 — upper limiting plate; 402-a rocker arm; 403-lower limiting bracket; 5-a master pump; 501-pump body; 502-oil tank; 503-dust cover; 504-pump body push rod; 505-a return spring; 506-a limit ring; 507, fixing grooves; 508-spring seat; 6-induction ring; 601-bumps; 7-a signal switch; 8-lower limit bolt; 9-connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, a clutch pedal mechanism of a heavy commercial vehicle comprises a pedal 1, a combined bracket 2 and a master cylinder 5, wherein the combined bracket 2 comprises a bottom plate 201, a mounting plate 202 and a support plate 204 are arranged on the bottom plate 201, the whole combined bracket 2 is of an integral sheet metal structure and is formed by stamping, as shown in fig. 5, a pedal arm 101 is welded on the pedal 1, a pedal rotating shaft 4 is welded at one end of the pedal arm 101, which is far away from the pedal 1, two ends of the pedal rotating shaft 4 are rotatably connected with the support plate 204, the rotating angle of the pedal rotating shaft 4 is 25-28 degrees, the master cylinder 5 comprises a pump body 501 and a pump body 501 push rod 504, the pump body 501 is connected with an oil tank 502, the master cylinder 5 is of the prior art and is not described in detail, as shown in fig. 7, a mounting hole 203 is arranged on the mounting plate 202, the pump body 501, namely, the connecting plate 9 is connected with the pump body 501 through bolts outside the cab, so that the pump body can be disassembled outside the cab, thereby realizing the disassembly and maintenance of the master cylinder 5 on the premise of not disassembling the integral structure of the pedal 1, greatly improving the maintenance speed, as shown in fig. 6, a return spring 505 is sleeved outside a push rod 504, a limit ring 506 is arranged on the push rod 504, one end of the return spring 505 is connected with the limit ring 506, the other end of the return spring 505 is connected with the pump body 501, the return spring 505 is directly sleeved on the push rod 504 of the pump body 501, the structure is more compact, the spatial arrangement is more organized, the return spring 505 is sleeved on the push rod 504 of the pump body 501, the problem of spring connection and unhooking when external force is applied can be avoided, the fixing reliability of the return spring 505 is ensured, and meanwhile, the return spring 505 is limited to be only horizontally stretched and compressed, avoid buckling, improve life, be equipped with rocking arm 402 and inductive loop 6 on the footboard pivot 4, the one end that the pump body 501 was kept away from to push rod 504 is articulated with rocking arm 402, is equipped with on the bottom plate 201 with inductive loop 6 complex signal switch 7 for detect the activity of footboard 1, and with signal transmission for the inside computer of car.

An upper limiting plate 401 and a lower limiting support 403 are welded on the pedal rotating shaft 4, an upper limiting bolt 3 and a lower limiting bolt 8 which are located on two sides of the pedal rotating shaft 4 are respectively arranged on the bottom plate 201, the upper limiting plate 401 is matched with the upper limiting bolt 3, and the lower limiting support 403 is matched with the lower limiting bolt 8. When the pedal 1 is stepped on by a foot, the lower limit bracket 403 on the pedal rotating shaft 4 collides with the lower limit bolt 8 to limit the downward moving distance of the pedal 1, after the pedal 1 is loosened, the pedal 1 is reset under the action of the return spring 505, and at the moment, the upper limit plate 401 collides with the upper limit bolt 3 to limit, so that the limit of the pedal 1 is realized, and in order to ensure the comfort and convenience of use and adapt to the range of the angle of the foot movement, in the embodiment, the rotating angle of the pedal rotating shaft 4 is 26.5 degrees.

In addition, in order to reduce the noise in the use process of the pedal 1, rubber sleeves are arranged at the upper ends of the upper limiting bolt 3 and the lower limiting bolt 8, and when the upper limiting bolt collides with the upper limiting plate 401 and the lower limiting bracket 403, a certain buffering effect can be achieved, so that the noise is reduced, and the comfort level can be improved.

For the convenience of installation, a fixing hole 205 for fixing the signal switch 7 is provided on the bottom plate 201, and the signal switch 7 is an electromagnetic signal switch 7.

As shown in fig. 8, the sidewall of the inductive ring 6 is provided with a convex protrusion 601, the protrusion 601 is matched with the signal switch 7, wherein the inductive ring 6 is of an integral structure and is formed by bending a thin metal plate, the cost is low, and the two ends are buckled together for facilitating disassembly and assembly.

In order to prevent dust from entering pump body 501, fixing groove 507 is provided on the side wall of retainer ring 506, corrugated dust cover 503 is sleeved outside return spring 505, one end of dust cover 503 is buckled in fixing groove 507, the other end of dust cover 503 is sleeved outside pump body 501, dust cover 503 covers the spring, dust can be prevented, and safety is improved.

Further, a spring seat 508 is arranged at an end of the pump body 501, and a groove matched with the return spring 505 is arranged on the spring seat 508, so that the spring is ensured not to slide.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a separation and reunion pedal mechanism of heavy commercial car, includes footboard, sectional shelf-unit and master cylinder, its characterized in that: the combined support comprises a bottom plate, a mounting plate and a support plate are arranged on the bottom plate, a pedal arm is connected onto the pedal, a pedal rotating shaft is fixedly connected onto one end, away from the pedal, of the pedal arm, two ends of the pedal rotating shaft are rotatably connected with the support plate, the rotating angle of the pedal rotating shaft is 25-28 degrees, the master cylinder comprises a pump body and a pump body push rod, an oil tank is connected onto the pump body, a mounting hole is formed in the mounting plate, the pump body penetrates through the mounting hole, a connecting plate is sleeved on the outer side of the pump body and is arranged at the upper end of the mounting plate, the connecting plate is connected with a connecting lug of the pump body through a bolt, a return spring is sleeved on the outer side of the push rod, a limiting ring is arranged on the push rod, one end of the return spring is connected with the limiting ring, and the bottom plate is provided with a signal switch matched with the induction ring.

2. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the pedal rotating shaft is provided with an upper limiting plate and a lower limiting support, the bottom plate is provided with an upper limiting bolt and a lower limiting bolt which are located on two sides of the pedal rotating shaft respectively, the upper limiting plate is matched with the upper limiting bolt, and the lower limiting support is matched with the lower limiting bolt.

3. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 2, wherein: and rubber sleeves are arranged at the upper ends of the upper limiting bolt and the lower limiting bolt.

4. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the rotation angle of the pedal rotating shaft is 26.5 degrees.

5. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the bottom plate is provided with a fixing hole for fixing the signal switch, and the signal switch is an electromagnetic signal switch.

6. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the side wall of the induction ring is provided with a convex bulge, and the bulge is matched with the signal switch.

7. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the side wall of the limiting ring is provided with a fixing groove, the outer side of the return spring is sleeved with a corrugated dust cover, one end of the dust cover is buckled in the fixing groove, and the other end of the dust cover is sleeved on the outer side of the pump body.

8. The clutch pedal mechanism for a heavy commercial vehicle as claimed in claim 1, wherein: the end of the pump body is provided with a spring seat, and the spring seat is provided with a groove matched with the return spring.