CN105863427B - Vehicle outer sliding door drive mechanism - Google Patents

Abstract

The invention relates to the field of commercial vehicles and railway passenger car doors. The invention aims to solve the technical problem of providing a novel external sliding door driving mechanism for a passenger car and a railway passenger car, which is simpler than the original mechanism, and reduces the original swinging-out mechanism and the up-down linkage mechanism. According to the scheme, the tray is arranged above or below a door of a door frame, the belt is stretched on the tray by each wheel to form a closed loop of the belt, the driver is connected with the driving wheel through the clutch, the sliding door connecting piece fixed on the sliding door is connected with the roller trolley, the sliding door connecting piece is connected with the sliding connecting piece, and the sliding connecting piece is connected with the belt, so that the roller trolley is driven to run in the bent slideway, and the sliding door is driven to move back and forth.

Description

Vehicle outer sliding door drive mechanism

Technical Field

The invention relates to the field of commercial vehicle and rail passenger car doors, and in particular to a vehicle door driving mechanism for sliding the door outwards.

Background technique

Doors, especially the passenger doors for getting on and off the bus, are important components of buses and rail trains, and are the aisles for passengers to get on and off. At present, the passenger doors commonly used in buses are inward swing doors and outward swing doors; rail trains use smooth sliding doors and outward sliding doors. Inward swing doors have their own design and structure problems, such as not being sealed, occupying aisle space, posing a risk of injury to passengers, and an unsightly interior layout. Although outward swing doors have the advantages of being sealed and not occupying aisle space over inward swing doors, other problems still exist, and they open outwards to a greater extent, which can easily injure people in large-capacity vehicles. The existing patent solutions for outward sliding doors (200620025131 Bus door outward sliding door machine system; 200520024867.7 Bus door automatic sliding device) are different from the existing The external sliding door driving mechanism used has not only a slideway and a roller trolley, but also a swing-out mechanism and an up and down synchronization mechanism, so the structure is complex and the cost is high; the transmission part of the external sliding door structure used on passenger cars is of a rope pulley type, and the service life of the rope pulley type is limited. The opening and closing life standard of passenger car doors is 100,000 times, and the opening and closing life standard of bus and rail train doors is 500,000 to 1,000,000 times. When the thin steel wire rope of the passenger car rope pulley type drives the door to run to the corner, the steel wire rope and the slideway are in friction operation, so the service life is more limited. Regarding the arrangement of the slides, since the frame formation of passenger cars (MPVs) and medium and large commercial buses is different, passenger cars have no dedicated frame and are called non-load-bearing, while medium and large commercial buses have a larger load and use dedicated frames and are called load-bearing. There are three slides that need to be arranged for sliding outside the door. Passenger cars (MPVs) all use curved slides, which are embedded in the body and welded, while medium and large commercial buses have stress-bearing frames on both sides of the door frame. The curved slides must be embedded in the main frame of the door side, which has a great influence on the strength of the body, so it is not suitable for arrangement.

Summary of the invention

The technical problem to be solved by the present invention is to provide a new type of outer sliding door driving mechanism for commercial vehicles, coaches and rail trains, which is simpler and cheaper than the original mechanism and reduces the original swing-out mechanism and upper and lower linkage mechanism.

The present invention is achieved through the following technical solutions:

The driving mechanism of the external sliding door of the vehicle includes a door frame, a sliding door, a driver, and a roller trolley, and is characterized in that the driving mechanism also includes a curved slideway or a straight slideway plus a ∏-shaped part, a driving wheel, a driven wheel, a tensioning wheel, a passing wheel, a bendable belt, a clutch, a sliding door connecting piece, a sliding connecting piece, and a tray. The tray is arranged above or below the door of the door frame, and each wheel tightens the belt on the tray to form a closed loop of the belt. The driver is connected to the driving wheel through the clutch, and the sliding door connecting piece fixed on the sliding door is connected to the roller trolley, the sliding door connecting piece is connected to the sliding connecting piece, and the sliding connecting piece is connected to the belt. The slideway is composed of three slideways, upper, middle, and lower. The middle slideway that slides out of the lateral door frame can be a straight slideway plus a ∏-shaped part, or a curved slideway. The ∏-shaped part structure is a ∏-shaped structural part that crosses the door frame column. One end of the ∏-shaped part can only be rotatably connected to the trolley of the straight slideway on one plane, and the other end can only be rotatably connected to the door panel on one plane. For the double sliding doors that open in opposite directions, a belt closed loop is used. The sliding connection piece of one door is connected to one side of the belt, and the sliding connection piece of the other door is connected to the other side of the belt, so that the movement directions of the two sides of the belt are opposite. The belt and each wheel structure is a chain sprocket, or a synchronous belt synchronous wheel, or a rope wheel structure. The connection structure of the sliding door connector and the sliding connection piece is a guide rod guide sleeve structure, or a slide slider, or a slide roller structure, or a soft steel rope connection structure. The closed loop arrangement of the belt can be a double straight line closed loop arrangement, or a closed loop arrangement in which the driving side is arranged along a curved slide.

The arrangement method of the driving mechanism of the external sliding door of a vehicle is characterized in that: the tray is arranged above or below the door of the door frame and is adapted to the height of the slideway there. The belt is tightened on the tray by each wheel to form a closed loop of the belt, the driver is connected to the driving wheel through a clutch, the sliding door connecting piece fixed on the sliding door is connected to the roller trolley, the sliding door connecting piece is connected to the sliding connecting piece, and the sliding connecting piece is connected to the belt. Two curved slideways are arranged under the floor of the door frame and above the door frame, and another slideway is arranged between the upper and lower slideways using a curved slideway or a straight slideway with a ∏-shaped piece. On the body of the vehicle where the door slides out of the lateral door frame, the sliding door is constrained by three roller trolleys to run on three slideways respectively.

Beneficial effects:

Compared with the prior art, this solution is simpler than the existing technical solution of the external sliding door driving mechanism of rail trains, reduces the bloated swing-out mechanism and the upper and lower synchronization mechanism, and adopts the door restrained on three slideways and the closed loop on the pallet along the curved slideway plus the sliding door connector and the sliding connector arrangement, or the door restrained on three slideways and the pallet with double straight line closed loop plus the sliding door connector and the sliding connector arrangement; compared with the external swing door and the internal swing door used in existing buses, all the mechanisms of the present invention are built-in, and there is no external swing door and the internal swing door column and the swing arm are exposed in the passenger compartment. When opening and closing the door, these components have a large driving force and are very easy to hurt people, so such doors have obvious signs "No standing in this area" and "No handholding on this column". The internal swing door used for public buses cannot be sealed, while the external sliding door of this solution is a fully sealed structure. The closed loop of a belt (such as a sprocket structure) formed by tightening the belt on the tray by each wheel and arranged above or below the door is more reliable and has a longer life than the current passenger car (MPV) using a rope wheel to run on the slideway. The life standards of the two are also 5 times different, with the life standards of passenger cars (MPV) and road buses being 100,000 times and 500,000 times respectively. For China, which has a large population, public transportation vehicles are often fully loaded, and the doors with the current layout and structure are extremely unsuitable for use in my country. The problem that the curved slideway of the doors of medium and large buses that slide out of the lateral door frame is not suitable for embedding the broken frame is also perfectly solved by the present invention, which adopts the straight slideway plus ∏-shaped part technology to avoid the broken frame. The invention technology is not only suitable for the installation and use of passenger car doors running on the road, but also for rail transit doors. It has a mechanism that is not exposed, and adopts a hidden type, and no parts that hinder passengers are exposed. The door can be fully sealed when closed. When the door is opened, it moves outward by the thickness of the door and slides to both sides of the door frame, without occupying the door channel at all. This structure is most suitable for public buses in my country, but so far, doors with this structure have not been used on such buses. The main reason is that the external sliding door of a rail train has a complex structure and high cost. Its price is several times that of the current inner swing door and outer swing door. The structure of this invention is simple, and the cost is naturally low, which is comparable to that of the inner swing door and outer swing door. This technical solution can also replace the current external sliding door drive mechanism of rail transit.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a view of the arrangement of the vehicle outer sliding door drive mechanism along the curved slideway

Figure 2 is a view of the dual linear arrangement of the vehicle's outer sliding door drive mechanism

Figure 3 is a view of the straight slideway plus ∏-shaped member of the vehicle outer sliding door drive mechanism

1-door frame (skeleton), 2-sliding door, 3-curved slide, 4-sliding door connector, 5-roller trolley, 6-clutch, 7-driving sprocket, 8-driver, 9-sliding connector, 10-chain, 11-tray, 12-driven wheel, 13-passing wheel, 14-tensioning wheel, 15-slide, 16-∏-shaped part

Detailed ways

Take the implementation of the double-leaf outer sliding door of a large bus as an example, each wheel tightens the belt on the tray to form a closed loop of the belt, that is, the sprocket chain is arranged along the closed loop of the curved slideway, and the sliding connection part is constrained in the sliding door connection part.

As shown in Figure 1, the outer sliding door is connected to the vehicle body through two curved slideways at the top and bottom, and the middle one is a straight slideway with a ∏-shaped member, and a ∏-shaped structural member that crosses the door frame column. One end of the ∏-shaped member can only rotate on one plane and is connected to the trolley of the straight slideway, and the other end can only rotate on one plane and is connected to the door panel. The sliding door is constrained on the vehicle body through the sliding door connector and the roller trolleys. The door can slide to the outside of the vehicle body as the slideway opens, and can also be closed as the slideway and be flush with the vehicle body. The tray can be installed on the door frame or under the step for passengers to get on and off the door frame. The chain sprockets of Figure 1 are arranged in a closed loop on the tray. The sprocket chains are arranged along the curved slideway with reasonable force. The sliding connector of one door is connected to the chain a on one side, and the sliding connector of another door is connected to the chain b on the other side, so that the movement directions of the two sections of the chain are opposite. The sliding door connector fixed on the sliding door is connected to the roller trolley, and the sliding door connector is connected to the sliding connector, and is connected to the chain through the sliding connector embedded in the waist groove processed on the sliding door connector. The output shaft of the driver is coaxially installed with the clutch and the driving sprocket. The driver (motor with reducer) drives the clutch, the driving sprocket, and the chain to rotate. The sliding connector fixed on the chain drives the sliding door and the roller trolley fixed on the sliding door connector through the waist groove processed on the sliding door connector to run in the curved slideway, thereby driving the double doors to open and close at the same time. The driver can use a motor with a reduction or a pneumatic.

Take the implementation of the double-leaf outer sliding door of a large bus as an example, the sliding connection part is constrained to slide in the guide part using a guide rod and guide sleeve structure, and each wheel tightens the belt on the tray to form a closed loop of the belt, that is, the sprocket chain is arranged in a straight line:

As shown in Figure 2, the outer sliding door is connected to the vehicle body through two curved slideways at the top and bottom, and the middle one is a straight slideway with a ∏-shaped member, and a ∏-shaped structural member that crosses the door frame column. One end of the ∏-shaped member can only rotate on one plane and is connected to the trolley of the straight slideway, and the other end can only rotate on one plane and is connected to the door panel. The sliding door is constrained on the vehicle body through the sliding door connector and the roller trolleys. The door can slide to the outside of the vehicle body as the slideway is opened, and can also be closed as the slideway to be flush with the vehicle body. The tray can be installed on the door frame or under the step for passengers to get on and off the door frame. The chain linear closed loop is arranged on the tray according to the double linear arrangement view of Figure 2. The sliding connection of one door is connected to the chain a on one side, and the sliding connection of the other door is connected to the chain b on the other side, so that the movement directions of the two sections of the chain are opposite. The connection structure of the sliding door connection and the sliding connection adopts a guide rod and guide sleeve structure. The sliding door connection fixed on the sliding door, that is, the guide rail with a support, is connected to the roller trolley. The guide rail is rotatably connected to the chain through a guide sleeve, that is, a sliding bearing. The output shaft of the driver is coaxially installed with the clutch and the driving sprocket. The driver (motor with a reducer) drives the clutch, the driving sprocket, and the chain to rotate. The sliding bearing connected to the chain drives the sliding door and the roller trolley to run in the curved slideway through the guide rail, thereby driving the double doors to open and close at the same time. The driver can use a motor with a reducer or a pneumatic one.

If a single door is used, only the driving mechanism of one door needs to be set according to the above example.

The arrangement of the straight slide is shown in Figure 3. Passenger cars (MPVs) can use a curved slide on the upper and lower door frames, and the third slide outside the door frame outside the side door frame can also use a curved slide; medium and large passenger car doors can use a curved slide on the upper and lower door frames, and the slide outside the door frame outside the side door frame can be fixed to the body with a straight slide and a ∏-shaped piece. At both ends of the ∏-shaped piece, one end can be connected to one side of the sliding door in a plane rotation, and the other end can be connected to the roller trolley of the straight slide in a plane rotation. When the door is closed, due to the use of a ∏-shaped piece, the gap of the ∏-shaped piece just allows the rectangular frame on the side of the car body door to pass. When the door is opened, the roller trolley does not move, and the ∏-shaped piece first rotates along the axis of the connecting end of the roller trolley and the ∏-shaped piece, so that the side of the sliding door bypasses the car body frame, and the ∏-shaped piece stands upright. At the same time, the up and down rolling trolleys on the other side of the sliding door also slide out from the curved end of the curved slide, and the three-roller trolley slides to one side, and the sliding door as a whole leaves the surface of the car body and slides to the side, thereby avoiding the problem of a broken frame embedded in the curved slide.

Claims (7)

1. The driving mechanism of the sliding door outside the vehicle comprises a door frame, a sliding door, a driver and a trolley, and is characterized in that: the driving mechanism further comprises a bending slideway or a straight slideway plus a pi-shaped piece, a driving wheel, a driven wheel, a tensioning wheel, a passing wheel, a bendable belt, a clutch, a sliding door connecting piece, a sliding connecting piece and a tray, wherein the tray is arranged above or below a door of the door frame, the belt is tightened on the tray by each wheel to form a closed loop of the belt, the driver is connected with the driving wheel through the clutch, the sliding door connecting piece fixed on the sliding door is connected with the trolley, the sliding door connecting piece is connected with the sliding connecting piece, and the sliding connecting piece is connected with the belt;

The structure of the pi-shaped piece is a pi-shaped structural piece crossing a door frame upright post, one end of the pi-shaped piece can only be rotationally connected to the trolley of the straight slide way on one plane, and the other end of the pi-shaped piece can only be rotationally connected to the door plate on one plane.

2. The vehicle out-of-range sliding door drive mechanism according to claim 1, wherein: the slide way is composed of an upper slide way, a middle slide way and a lower slide way, wherein the middle slide way which slides out of the lateral door frame can be a straight slide way plus pi-shaped piece or a curved slide way.

3. The vehicle out-of-range sliding door drive mechanism according to claim 1, wherein: for a split double sliding door, a closed loop of one belt is used, the sliding coupling of one door is coupled to one side of the belt, and the sliding coupling of the other door is coupled to the other side of the belt, so that the movement directions of the two sides of the belt are opposite.

4. The vehicle out-of-range sliding door drive mechanism according to claim 1, wherein: the belt and each wheel structure is a chain sprocket, or a synchronous belt synchronous wheel, or a rope wheel structure.

5. The vehicle out-of-range sliding door drive mechanism according to claim 1, wherein: the sliding door connecting piece and the sliding connecting piece are connected in a guide rod and guide sleeve structure, a sliding groove sliding block, a sliding groove roller structure or a soft steel rope connecting structure.

6. The vehicle out-of-range sliding door drive mechanism according to claim 1, wherein: the closed loop arrangement of the belt may be a double straight loop arrangement or the drive side may be a closed loop arrangement arranged along a curved ramp.

7. The arrangement method of the driving mechanism of the vehicle external sliding door is characterized in that: the tray is arranged above or below the door of the door frame and is matched with the height of the slide way, the belt is stretched on the tray by each wheel to form a closed loop of the belt, the driver is connected with the driving wheel through the clutch, the sliding door connecting piece fixed on the sliding door is connected with the roller trolley, the sliding door connecting piece is connected with the sliding connecting piece, the sliding connecting piece is connected with the belt, two bending slide ways are arranged below the floor of the door frame and above the door frame, the other slide way adopts the bending slide way or adopts the straight slide way and the n-shaped piece to be arranged between the upper slide way and the lower slide way, and the sliding door is restrained on three slide ways respectively through 3 roller trolley on a vehicle body outside the lateral door frame of the vehicle door;

The structure of the pi-shaped piece is a pi-shaped structural piece crossing a door frame upright post, one end of the pi-shaped piece can only be rotationally connected to the trolley of the straight slide way on one plane, and the other end of the pi-shaped piece can only be rotationally connected to the door plate on one plane.