CN201024817Y - Car door linkage opening and closing mechanism - Google Patents

Abstract

The utility model discloses a carriage door linkage opening and closing mechanism. The carriage door is composed of upper and lower doors. The upper end of the upper door is hinged with the carriage door frame, and the lower end of the lower door is hinged with the carriage door frame. 1. The double linkage mechanism of the lower door. The pivoting arm of the double linkage mechanism is provided with three hinge points distributed in an equilateral triangle, wherein the first hinge point is hinged with the compartment wall, and the second and third hinge points are respectively connected with the upper and lower hinge points. The lower link is hinged, the upper link is hinged with the upper door, and the lower link is hinged with the lower door to form an upper and lower linkage planar four-bar mechanism, in which the stable position of the planar four-bar mechanism of the upper door is at the upper hinge point of the upper link The angle formed by the connection line with the first hinge point on the rotating arm and the upper connecting rod is greater than 0° and less than 10°. The utility model can open and close the upper door of the carriage in linkage by manually opening and closing the lower door of the carriage, and open and position the upper door upward, effectively solving the problem that the carriage door of a large vehicle is opened rapidly upward manually.

Description

Car door linkage opening and closing mechanism

technical field

The utility model relates to an opening and closing mechanism of a carriage door, in particular to a linkage opening and closing mechanism of a carriage door which can be opened up and down for a large vehicle.

Background technique

At present, the compartment doors of traditional large van trucks usually use side-opening doors, that is, the compartment doors are opened to one side or both sides. This side-opening door is generally opened manually, but after the door is opened, it will form a shield on both sides of the door opening. , affecting the work of personnel. In order to keep the outside sides of the door opening from being blocked after the door is opened, and to have a smooth working space, it is necessary to use an upper-opening door. However, if the traditional manual opening door is adopted, the compartment door of the large van truck is manually opened 90° upwards to be in a horizontal state, and is positioned by oblique supports. Generally speaking, it is really difficult to manually open the compartment door with a height of more than 3m to 90° to maintain a horizontal position, and it is also difficult to close the compartment door with a height of 90° and a height of more than 3m by manual operation. Of course, the use of hydraulic cylinders as oblique supports can solve the problem of upward opening of the compartment doors of large van trucks with a height of more than 3m through hydraulic power. Slow, and once the hydraulic system fails, the compartment door cannot be opened. For some special vehicles that need to open the compartment door against time, such as engineering emergency vehicles, military supply vehicles, etc., the speed of opening the compartment door is relatively slow, or due to Failure of the hydraulic system to open the compartment door will bring unimaginable consequences, and the most suitable method for opening the compartment door of these special vehicles is manual opening. Therefore, how to open up and down the compartment door of a large vehicle with a height of more than 3m to 90° and maintain a horizontal position manually is still a difficult problem so far.

Contents of the invention

The purpose of the utility model is to provide a carriage door linkage opening and closing mechanism, which can open and close the upper door of the carriage in linkage by manually opening the lower door of the carriage, and open and position the upper door upwards.

The purpose of this utility model is achieved in the following way: comprising a compartment and a compartment door, the compartment door is composed of upper and lower doors, the upper end of the upper door is hinged with the upper end of the compartment door frame, the lower end of the lower door is hinged with the lower end of the compartment door frame, and the compartment door There is a double linkage mechanism for linkage opening and closing of the upper and lower doors. The rotating arm of the double linkage mechanism is provided with three hinge points, and the three hinge points are distributed on the rotating arm in an equilateral triangle. One point is hinged with the compartment wall, the second hinge point is hinged with the lower end of the upper link, the third hinge point is hinged with the upper end of the lower link, the upper end of the upper link is hinged with the upper door, and the lower end of the lower link is hinged with the lower door. The upper and lower planar four-bar linkages are linked, and the dead point of the upper planar four-bar mechanism is on the line connecting the hinge point at the upper end of the upper link and the first hinge point on the rotating arm, and the included angle formed by the upper link is Greater than 0° and less than 10°.

Due to the adoption of the above scheme, the carriage door is composed of two doors that are opened up and down, so that the opening height of the lower door is within the reach of ordinary people, and the carriage is provided with double doors for linkage opening and closing of the upper and lower doors. The link mechanism can manually open and close the lower door at a relatively low position, and the upper door at a high position can be opened and closed through the double link mechanism linkage, which solves the problem of manual upward opening of the compartment door of a large vehicle with a height of more than 3m , so that the two sides of the compartment door opening can not be blocked, leaving a smooth working space. Since the rotating arm of the double linkage mechanism is provided with three hinge points, the three hinge points are distributed on the rotating arm in an equilateral triangle, and are respectively hinged with the compartment wall, the lower end of the upper connecting rod, and the upper end of the lower connecting rod. The upper end of the rod is hinged with the upper door, and the lower end of the lower connecting rod is hinged with the lower door, forming an upper and lower linkage planar four-bar mechanism. The original rocker of the planar four-bar mechanism for opening and closing the upper door, so only the lower door needs to be opened and closed manually, and the upper door can be driven to open and close through the rotating arm, forming a linked opening and closing of the upper and lower doors. Because the dead center position of the planar four-bar mechanism for opening and closing the upper door is on the line connecting the upper hinge point of the upper link and the first hinge point on the rotating arm, the angle formed by the upper link is greater than 0° and less than 10°. After the compartment door is opened, the lower door can be opened to 180°, and the upper door can be opened to 88-180° to form a positioning valve, and the upper door will not automatically fall and close; when the compartment door needs to be closed, just turn the lower door to open and close When the planar four-bar mechanism of the upper door breaks away from the stable angle, the upper door will automatically close under the action of gravity, and at the same time drive the lower door to close. And because when the upper and lower doors are opened and closed, the angular displacement, angular velocity and angular acceleration of the lower door are greater than the upper door. The sealing strip of the upper door is pressed against the sealing strip of the upper door to ensure a tight seal at the joint of the two doors.

The utility model is simple in structure, has good linkage performance, effectively solves the problem that the compartment door of a large vehicle is opened upward quickly manually, and is flexible and labor-saving.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of the utility model in the open state of the compartment door.

In the accompanying drawings, 1a and 1b are hinges, 2 is the upper door, 3a and 3b are support seats, 4 is the upper link, 5 is the carriage, 6 is the rotating arm, 6a is the first hinge point, and 6b is the second dumpling joint. 6c is the third hinge point, 7 is a fixed axis, 8 is a lower connecting rod, and 9 is a lower door.

Detailed ways

Referring to Fig. 1, Fig. 2, the compartment door of described large-scale vehicle is made of upper and lower two doors, and the upper end of its upper door 2 is connected with the upper end of compartment 5 door frame by hinge 1a, forms the door that upwards opens, and the lower end of lower door 9 passes through Hinge 1b is connected with the lower end of the door frame of the compartment to form a door that opens in the country. The hinges 1a and 1b are located at the outer ends of the upper and lower doors 2, 9 and the door frame of the compartment 5, and are fixed with bolts or rivets so that the upper and lower doors can be closed in the compartment when they are closed. In the door opening, the joints of the upper and lower doors are respectively provided with a sealing strip, and the sealing strip of the lower door 9 is pressed against the sealing strip of the upper door 2. The inner wall of the compartment 5 is provided with a double linkage mechanism for linkage opening and closing of the upper and lower doors. The double linkage mechanisms for linkage opening and closing of the upper and lower doors are a pair, which are symmetrically arranged on both sides in the compartment door opening. The rotating arm 6 of the double linkage mechanism is provided with three hinge points, and the three hinge points are distributed on the rotating arm 6 in the form of an equilateral triangle. The rotating arm 6 is an equilateral triangle, and the three corners are respectively provided with hinge points. Wherein the first hinge point 6a is hinged with the inner wall of the compartment 5, the first hinge point 6a is hinged to the fixed shaft 7 fixed on the inner wall of the compartment 5 with bolts, and is fixed with a retaining ring, a spring washer, and a nut; the second hinge point 6b passes through The pin shaft is hinged with the lower end of the upper link 4; the third hinge point 6c is hinged with the upper end of the lower link 8 through the pin shaft. The upper end of the upper link 4 is hinged with the upper door 2, and the inner wall of the upper door 2 is fixedly connected with a support seat 3a with bolts, and the upper end of the upper link 4 is hinged to the support seat 3a through a pin; the lower end of the lower link 8 is hinged with the lower door 9, The inner wall of the lower door 9 is fixedly connected with a support seat 3b with bolts, and the lower end of the lower connecting rod 8 is hinged to the support seat 3b by a bearing pin. The upper door 2, the upper link 4, the rotating arm 6, the lower link 8, the lower door 9 and the compartment 5 constitute an upper and lower linkage planar four-bar mechanism, wherein the upper planar four-bar mechanism of the upper door 2 is opened and closed. The dead point position of the upper link 4 is on the connecting line between the upper hinge point of the upper link 4 and the first hinge point 6a on the pivot arm 6, and the angle formed by the upper link 4 is greater than 0° and less than 10°, and the preferred angle is The degrees are between 3° and 7°, and the included angle in this embodiment is 3.7°. The distances between the joints of the two linked planar four-bar mechanisms are respectively, and the center distance between the two hinge points on each side of the equilateral triangle formed by the distribution of the three hinge points on the rotating arm 6 is 300mm. , the center distance between the first hinge point 6a on the pivot arm and the lower hinge point of the lower door 9 is 530mm, the horizontal distance between the lower hinge point of the lower door and the lower door hinge point is 280mm, and the vertical distance between the lower hinge point of the lower door is 450mm, the center distance between the second hinge point 6b on the rotating arm and the hinge point at the upper end of the upper link 4 is 900mm, and the center distance between the upper hinge point of the upper link 4 and the upper hinge point of the upper door 9 is 326.54mm. The center distance between the third hinge point 6c on the arm and the hinge point at the lower end of the lower link 8 is 600mm, and the center distance between the lower hinge point of the lower link 8 and the lower hinge point of the lower door 9 is 223.61mm. With the above distance dimension, it can be satisfied that the angular displacement, angular velocity and angular acceleration of the rotation of the lower door 9 are greater than that of the upper door 2 when the upper and lower doors are opened and closed.

The distance between the hinge points of the two linked planar four-bar mechanisms of the utility model is not limited to the above-mentioned embodiment, but can be set according to the following proportions, which can realize the linkage opening and closing of the upper and lower doors of the carriage, and position the upper door in the open position. The ratio of the distance between each hinge point is as follows:

The center distance between the two hinge points on each side of the equilateral triangle formed by the distribution of the three hinge points on the rotating arm is 100;

The center distance between the first joint on the pivoting arm and the lower hinge point of the lower door is 176.6666667, the horizontal distance from the lower hinge point of the lower door is 93.3333333, and the vertical distance from the lower hinge point of the lower door is 150;

The center distance between the second hinge point on the swing arm and the hinge point on the upper end of the upper link is 300;

The center distance between the upper hinge point of the upper link and the upper hinge point of the upper door is 108.8466667;

The center distance between the third hinge point on the swing arm and the hinge point at the lower end of the lower link is 200;

The center distance between the lower hinge point of the lower link and the center of the lower hinge point of the lower door is 74.5366667.

The compartment door linkage opening and closing mechanism of the present invention is arranged on the left, right or rear side of the compartment of a large vehicle. The lower link drives the pivoting arm to rotate, and the pivoting arm drives the upper link to open the upper door. When the lower door is opened to 180° and cannot be moved due to the limit of the vehicle body, the upper door is linked to open upwards to 88.7-90° and positioned at a stable position of 3.7°. Angle open state; when the compartment door is closed, turn the lower door upwards so that the lower link drives the pivoting arm to rotate, and the pivoting arm drives the upper link to break away from the stable angle of 3.7°, and the upper door will automatically close downwards with the lower door. The carriage door linkage opening and closing mechanism can quickly open and close the car door without mechanical failure, and can ensure fast and smooth opening and closing of the car door. It is especially suitable for special vehicles such as engineering emergency vehicles and military supply vehicles.

Claims (10)

1. A carriage door linkage opening and closing mechanism, comprising carriage and carriage door, is characterized in that: described carriage door is made of upper and lower two doors, and the upper end of its upper door is hinged with the carriage doorframe upper end, and the lower end of lower door and carriage The lower end of the door frame is hinged, and the carriage is provided with a double-link mechanism for linkage opening and closing of the upper and lower doors. The rotating arm of the double-link mechanism is provided with three hinge points, and the three hinge points are distributed on the rotating arm in the form of an equilateral triangle. , wherein the first hinge point is hinged to the compartment wall, the second hinge point is hinged to the lower end of the upper link, the third hinge point is hinged to the upper end of the lower link, the upper end of the upper link is hinged to the upper door, and the lower end of the lower link is hinged to The lower door is hinged to form an upper and lower linked planar four-bar mechanism. The stable position of the upper door's planar four-bar mechanism is on the line connecting the hinge point at the upper end of the upper link and the first hinge point on the rotating arm, forming the same link as the upper link. The included angle is greater than 0° and less than 10°. 2. The carriage door linkage opening and closing mechanism according to claim 1, characterized in that: said double linkage mechanism for linkage opening and closing of the upper and lower doors is a pair, symmetrically arranged on both sides of the carriage door opening. 3. The carriage door linkage opening and closing mechanism according to claim 1 or 2, characterized in that: the pivoting arm of the double linkage mechanism is an equilateral triangle, and three corners are respectively provided with hinge points. 4. The carriage door linkage opening and closing mechanism according to claim 3, characterized in that: the first hinge point on the rotating arm is hinged to a fixed shaft fixed on the carriage wall, and the second hinge point is connected to the upper shaft through a pin shaft. The connecting rod is hinged, and the third hinge point is hinged with the lower connecting rod through a pin. 5. The carriage door linkage opening and closing mechanism according to claim 1, wherein the upper and lower doors are respectively connected to the carriage door frame through hinges, and the hinges are located at the outer ends of the upper and lower doors and the carriage door frame. 6. The carriage door linkage opening and closing mechanism according to claim 1, characterized in that: the distance between the hinge points of the two linkage planar four-bar linkages is set according to the following ratio, wherein The center distance between the two hinge points on each side of the equilateral triangle formed by the distribution of the three hinge points on the rotating arm is 100; The center distance between the first hinge point on the pivot arm and the lower hinge point of the lower door is 176.6666667, the horizontal distance from the lower hinge point of the lower door is 93.3333333, and the vertical distance from the lower hinge point of the lower door is 150; The center distance between the second hinge point on the swing arm and the hinge point on the upper end of the upper link is 300; The center distance between the upper hinge point of the upper link and the upper hinge point of the upper door is 108.8466667; The center distance between the third hinge point on the swing arm and the hinge point at the lower end of the lower link is 200; The center distance between the lower hinge point of the lower link and the center of the lower hinge point of the lower door is 74.5366667. 7. The carriage door linkage opening and closing mechanism according to claim 6, characterized in that: the distances between the hinge points of the two linkage planar four-bar mechanisms are respectively, and the three hinge points on the rotating arm are distributed to form The center distance between the two hinge points on each side of the equilateral triangle is 300mm, The center distance between the first hinge point on the pivot arm and the lower hinge point of the lower door is 530mm, the horizontal distance from the lower hinge point of the lower door is 280mm, and the vertical distance from the lower hinge point of the lower door is 450mm; The center distance between the second hinge point on the swing arm and the hinge point on the upper end of the upper link is 900mm; The center distance between the upper hinge point of the upper link and the upper hinge point of the upper door is 326.54mm; The center distance between the third hinge point on the swing arm and the hinge point at the lower end of the lower link is 600mm The center distance between the lower hinge point of the lower link and the lower hinge point of the lower door is 223.61 mm. 8. The carriage door linkage opening and closing mechanism according to any one of claims 1, 6, and 7, characterized in that: the stable position of the planar four-bar mechanism of the upper door is at the first hinge point of the upper end of the upper link and the pivot arm. The connecting line of the hinge point forms an included angle with the upper connecting rod between 3° and 7°. 9. The carriage door linkage opening and closing mechanism according to claim 1, characterized in that: the joint parts of the upper and lower doors are respectively provided with sealing strips, and the sealing strips of the lower door press the sealing strips of the upper door. 10. The carriage door linkage opening and closing mechanism according to claim 1, wherein when the upper and lower doors are opened and closed, the angular displacement, angular velocity and angular acceleration of the lower door are greater than that of the upper door.

Images