Door linkage mechanism

Abstract

The present invention discloses a door linkage mechanism, comprising a locking lever, a fixed shaft, an active slide, a driven slide, a linkage, an active shaft, a driven shaft, a first long guide column and a second long guide column, wherein the first long guide column and the second long guide column are fixed in parallel, the active slide and the driven slide are respectively sleeved on the first long guide column and the second long guide column for sliding, and are connected through a linkage to achieve synchronous movement, the fixed shaft is fixed between the first long guide column and the second long guide column, the active shaft and the driven shaft are respectively mounted on the active slide and the driven slide, the locking lever is mounted on the fixed shaft, the locking lever rotates around the axis of the fixed shaft, and when the active slide and the driven slide slide to the locked position, the active shaft and the driven shaft contact one end of the locking lever. The present invention utilizes the principle of lever to achieve the locking of the driven slide by the active slide of the linkage mechanism, avoids the linkage from being subjected to alternating force for a long time, and ensures that the door is in a locked state when the linkage breaks.

Description

Technical Field

[0001] The invention relates to a linkage mechanism, in particular to a vehicle door linkage mechanism. Background Art

[0002] In the field of passenger vehicle doors, the mechanism is the core component of the door, which is used to drive the door leaf to move along a predetermined trajectory. The linkage mechanism connects the master and slave door leaves through linkage parts (including belts, wire ropes, and chains, etc.) to achieve relative movement of the left and right door leaves, which can shorten the length of the mechanism, simplify the transmission structure, and thus reduce the installation space of the mechanism and reduce manufacturing costs. However, during the operation of the vehicle, when the linkage parts are subjected to elastic deformation under force, the door will not close tightly, and vibration and noise will be large, affecting the comfort of the ride. If the linkage parts are subjected to alternating forces for a long time, fatigue fracture will occur, affecting driving safety and increasing after-sales costs. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a door linkage mechanism that prevents the door mechanism linkage parts from being stressed and broken during the operation of the vehicle.

[0004] Technical solution: The door linkage mechanism of the present invention includes a locking lever, a fixed shaft, an active slide, a driven slide, a linkage member, a driving shaft, a driven shaft, a first long guide column and a second long guide column. The first long guide column and the second long guide column are fixed in parallel. The active slide and the driven slide are respectively sleeved on the first long guide column and the second long guide column for sliding, and are connected through a linkage member to achieve synchronous movement. The fixed shaft is fixed between the first long guide column and the second long guide column. The active shaft and the driven shaft are respectively installed on the active slide and the driven slide. The locking lever is installed on the fixed shaft. The locking lever rotates around the axis of the fixed shaft. When the driven slide slides to the locking position, the active shaft and the driven shaft respectively contact one end of the locking lever.

[0005] The distance from the end of the locking lever in contact with the driving shaft to the fixed shaft is smaller than the distance from the end of the locking lever in contact with the driven shaft to the fixed shaft.

[0006] The active shaft first contacts one end of the locking lever and drives the locking lever to rotate around the fixed axis. When the active slide moves to the locking position, the locking lever stops rotating. At this time, the other end of the locking lever contacts the driven shaft.

[0007] The door linkage mechanism also includes a reset device, which is used to reset the locking lever.

[0008] The reset device is a reset torsion spring, one end of which is fixed between the first long guide column and the second long guide column, and the other end of which is fixed on the locking lever.

[0009] One end of the return torsion spring is fixed between the first long guide column and the second long guide column through a fixing pin.

[0010] When unlocking, the locking lever rotates clockwise under the action of the resetting device, and the resetting is completed when the long side of the locking lever contacts the fixing pin.

[0011] The other end of the reset torsion spring is fixed on the locking lever through a limit pin.

[0012] The door linkage mechanism of the present invention has a working principle of providing a linkage member (including a belt, a steel wire rope, a chain, etc.) between the active and driven slide cylinders of the mechanism, and using the active slide cylinder to drive the driven slide cylinder to make relative motion, thereby realizing the door opening and closing motion. A locking lever device is provided at the door closed position, and the rotation speed difference of the lever with different arm lengths is utilized to avoid the interference of the lever with the movement of the active and driven slide cylinders. When the door is closed, the active slide cylinder locks the driven slide cylinder through the lever, and the relative position of the active and driven slide cylinders is changed by adjusting the connection length of the linkage member, thereby ensuring reliable locking.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0014] (1) The lever principle is used to realize the locking of the active slide cylinder of the linkage mechanism to the driven slide cylinder, so as to prevent the linkage parts from being subjected to alternating forces for a long time. When the linkage parts break, the door can be kept in the locked state;

[0015] (2) The rotation speed difference of the lever arms of different lengths is used to achieve the coordinated movement of the locking lever and the master and slave components to avoid interference;

[0016] (3) Adjust the length of the linkage to change the relative position of the master and slave slides to ensure the reliability of locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the linkage mechanism of the present invention;

[0018] Figure 2 It is a schematic diagram of the AA surface of the linkage mechanism of the present invention;

[0019] Figure 3 It is a partially enlarged schematic diagram of the locked state of the present invention;

[0020] Figure 4 It is a partially enlarged schematic diagram of the unlocking state of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with embodiments.

[0022] like Figure 1 and Figure 2As shown, in the present invention, the motor assembly 2 is directly connected to the screw rod 3, and is installed on the bearing bracket 1 through the motor mounting seat 6 and the screw rod mounting seat 7. The two ends of the bearing bracket 1 are installed on the bracket 8. The motor 2 drives the screw rod 3 to rotate, and the screw rod 3 drives the nut 4 that is spirally matched with it to make a linear reciprocating motion. The transmission frame 5 moves with the nut 4 and drives the hinge frame 9 to move. The first long guide column 12 and the second long guide column 23 are arranged in parallel, and the two ends of the first long guide column 12 and the second long guide column 23 are fixed on the bracket 8. The active slide 10 and the driven slide 11 are respectively sleeved on the first long guide column 12 and the second long guide column 23 to slide. The active slide 10 and the driven slide 11 are connected by a linkage 13 to achieve synchronous movement. The hinge frame 9 is installed on the active slide 10, driving the active slide 10 to make a linear motion on the first long guide column 12. The middle part of the upper end of the linkage member 13 is fixed on the hinge frame 9, and the middle part of the lower end is installed on the driven slide 11 through the adjustment plate 14. The left and right ends of the linkage member 13 pass around the pulleys 15 installed on the two ends of the hanger 8 to form a closed motion loop. The hinge frame 9 drives the linkage member 13 to rotate around the pulley 15, and the linkage member 13 drives the driven slide 11 to make a linear motion relative to the active slide 10 on the second long guide column 23.

[0023] like Figure 3 As shown, the driving shaft 16 and the driven shaft 17 are respectively mounted on the driving slide 10 and the driven slide 11, the fixed shaft 18 is fixed on the bearing bracket 1 between the first long guide column 12 and the second long guide column 23, and the locking lever 19 is mounted on the fixed shaft 18 and can rotate around the axis of the fixed shaft 18. In this embodiment, the distance from the end of the locking lever 19 that contacts the driving shaft 16 to the fixed shaft 18 is smaller than the distance from the end of the locking lever 19 that contacts the driven shaft 17 to the fixed shaft 18. The reset torsion spring 20 is mounted on the fixed shaft 18 and can also rotate around the axis of the fixed shaft 18. One end of the reset torsion spring 20 is fixed between the first long guide column 12 and the second long guide column 23 by a fixing pin 21, and the other end is fixed to the locking lever 19 by a limit pin 22, and the reset torsion spring 20 moves with the limit pin 22. The fixing pin 21 is fixed on the bearing bracket 1, and the limit pin 22 is fixed on the locking lever 19.

[0024] Locking action principle: Figure 3As shown, the motor assembly 2 rotates forward, and drives the hinge frame 9 and the active slide 10 to move from left to right through the screw rod 3, the nut 4 and the transmission frame 5. The hinge frame 9 drives the linkage member 13 to move, and the linkage member 13 drives the driven slide 11 to move from right to left. When the active slide 10 moves to a position close to the closed position, the active shaft 16 on it contacts the short side of the locking lever 19, and drives the locking lever 19 to rotate counterclockwise around the fixed shaft 18. The limit pin 22 moves with the locking lever 19 and drives the reset torsion spring 20 to rotate in the pressing direction. When the active slide 10 reaches the closed position, the motor assembly 2 stops rotating and locks. At this time, the active slide 10 is in a locked state, and the long end of the locking lever 19 contacts and presses the driven shaft 17. If the long end of the locking lever 19 is not in contact with the driven shaft 17, the position of the driven slide 11 relative to the active slide 10 can be adjusted by the adjustment plate 14 and the linkage 13 to ensure that the locking lever 19 is in reliable contact and pressed against the driven shaft 17. Under the combined effect of the reaction force of the door leaf rubber strip and the pressing force of the locking lever 19, the driven slide 11 is in a locked state. At this time, the impact force of the door leaf on the driven slide 11 will act on the active slide 10 through the locking lever 19, thereby preventing the linkage 13 from being subjected to force. Even if the linkage is broken, the driven slide will still keep the door locked until the unlocking and opening operation is performed.

[0025] Unlocking action principle: Figure 4 As shown, the motor assembly 2 is unlocked and rotates in the opposite direction, the hinge frame 9 and the active slide 10 move from right to left, the hinge frame 9 drives the linkage member 13 to move, and the linkage member 13 drives the driven slide 11 to move from left to right. The locking lever 19 rotates clockwise under the action of the reset torsion spring 20, the short side of the locking lever 19 contacts the active shaft 16, and the long side is separated from the driven shaft 17. When the long side of the locking lever 19 contacts the fixed pin 21, it stops rotating.

[0026] The transmission assembly composed of the motor lead screw nut can be a rod cylinder or other similar transmission forms; the synchronous belt can be a chain, wire rope or other similar linkage forms; the resetting of the locking link can be achieved by a tension spring; the driving shaft and the driven shaft can be roller structures or other similar rolling structures.

Claims

1. A door linkage mechanism, characterized in that: The invention comprises a locking lever (19), a fixed shaft (18), an active slide cylinder (10), a driven slide cylinder (11), a linkage member (13), an active shaft (16), a driven shaft (17), a first long guide column (12) and a second long guide column (23), wherein the first long guide column (12) and the second long guide column (23) are fixed in parallel, and the active slide cylinder (10) and the driven slide cylinder (11) are respectively sleeved on the first long guide column (12) and the second long guide column (23) and slide, and are connected through the linkage member (13) to realize synchronous movement. The fixed shaft (18) is fixed between the first long guide column (12) and the second long guide column (23), the driving shaft (16) and the driven shaft (17) are respectively mounted on the driving slide cylinder (10) and the driven slide cylinder (11), the locking lever (19) is mounted on the fixed shaft (18), the locking lever (19) rotates around the axis of the fixed shaft (18), and when the driven slide cylinder (11) slides to the locking position, the driving shaft (16) and the driven shaft (17) are respectively in contact with one end of the locking lever (19); The distance between the end of the locking lever (19) in contact with the driving shaft (16) and the fixed shaft (18) is smaller than the distance between the end of the locking lever (19) in contact with the driven shaft (17) and the fixed shaft (18); The active shaft (16) first contacts one end of the locking lever (19) and drives the locking lever (19) to rotate around the fixed shaft (18). When the active slide cylinder (10) moves to the locking position, the locking lever (19) stops rotating. At this time, the other end of the locking lever (19) contacts the driven shaft (17).

2. The door linkage mechanism according to claim 1, characterized in that: The door linkage mechanism also includes a reset device, which is used to reset the locking lever (19).

3. The door linkage mechanism according to claim 2, characterized in that: The reset device is a reset torsion spring (20), one end of the reset torsion spring (20) is fixed between the first long guide column (12) and the second long guide column (23), and the other end of the reset torsion spring (20) is fixed on the locking lever (19).

4. The door linkage mechanism according to claim 3, characterized in that: One end of the return torsion spring (20) is fixed between the first long guide column (12) and the second long guide column (23) via a fixing pin (21).

5. The door linkage mechanism according to claim 4, characterized in that: When unlocking, the locking lever (19) rotates clockwise under the action of the resetting device, and the resetting is completed when the long side of the locking lever (19) contacts the fixing pin (21).

6. The door linkage mechanism according to claim 3, characterized in that: The other end of the return torsion spring (20) is fixed to the locking lever (19) via a limit pin (22).

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