Auxiliary locking device for door leaf

Abstract

The utility model discloses an auxiliary locking device for a door leaf. The auxiliary locking device comprises a baffle used for being connected with the door leaf and forming a semi-surrounding containing groove with the inner wall of the door leaf, a rotating arm used for being connected with a vehicle body, and a lifting lever used for being connected with a stand column of the door leaf and the rotating arm. The rotating arm is a bent arm, the corner is rotationally connected with the vehicle body through a rotating shaft, the rear end of the rotating arm is hinged to a deflector rod, when the door leaf is closed, the deflector rod rotates along with the stand column to be away from the door leaf and pulls the rotating arm to rotate, and the front end of the rotating arm enters the containing groove; when the door leaf is opened, the front end of the deflector rod gets close to the door leaf to push the rotating arm to rotate, and the front end of the rotating arm leaves the containing groove. According to the utility model, the rotating arm is buckled into the accommodating groove to reinforce the connection between the door leaf and the vehicle body, the rotating direction of the rotating arm is opposite to that of the upright post, and when the rotating arm is connected with the baffle, if the door leaf tends to leave the door frame of the vehicle body due to shaking, the upright post is pushed to rotate towards the door leaf locking direction, so that the connection between the door leaf and the vehicle body is reinforced, and the door leaf is prevented from loosening and shaking.

Description

Technical Field

[0001] The utility model relates to a locking arm device, in particular to an auxiliary locking device for a door leaf. Background Art

[0002] The auxiliary pressing structure of the electric plug door of existing buses is a balance wheel, which is easy to loosen in bumpy conditions. When the balance wheel is loose, the door leaf loses its limit and is prone to shaking. When the upper corner of the door leaf is squeezed by external force, the deformation is large. The shaking and deformation of the door leaf will reduce the riding comfort of passengers and increase the failure rate of the door.

[0003] The utility model device with publication number CN213234628U discloses a rotating column door panel locking device, in which a support is arranged on the door leaf, a rotating shaft is arranged on the column, and when the rotating shaft drives the door leaf to close, the front end of the upper swing arm is located in the accommodating groove, increasing the connection strength between the column and the door leaf, and when the rotating shaft drives the door leaf to open, the upper swing arm assists in pushing the door leaf to open, and then is driven away from the upper swing arm. In this scheme, whether the door leaf and the upper swing arm are connected depends on whether the door leaf is closed, and the strength of the action is limited. After the door leaf is opened, the front end of the upper swing arm will extend out of the vehicle body, which is easy to be corroded and damaged. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a door leaf auxiliary locking device for strengthening the connection between the door leaf and the vehicle body.

[0005] Technical solution: The utility model describes an auxiliary locking device for a door leaf, comprising a baffle plate connected to the door leaf and forming a semi-enclosed receiving groove with the inner wall of the door leaf, a rotating arm connected to a vehicle body, and a lever for connecting the column and the rotating arm of the door leaf; the rotating arm is a bending arm, which is rotatably connected to the vehicle body through a rotating shaft at the corner, and the rear end is hinged to the lever. When the door leaf is closed, the lever rotates with the column away from the door leaf, pulling the rotating arm to rotate, and the front end of the rotating arm enters the receiving groove; when the door leaf is opened, the front end of the lever approaches the door leaf, pushing the rotating arm to rotate, and the front end of the rotating arm leaves the receiving groove.

[0006] In the utility model, the rotating arm is buckled into the accommodating groove to strengthen the connection between the door leaf and the vehicle body. The rotation direction of the rotating arm is opposite to the rotation direction of the column. When the rotating arm is connected to the baffle, if the door leaf tends to leave the door frame of the vehicle body due to shaking, it will push the column to rotate in the direction of locking the door leaf, thereby strengthening the connection between the door leaf and the vehicle body and preventing the door leaf from loosening and shaking.

[0007] Preferably, the corner of the rotating arm is rotatably connected to the vehicle body through a bottom plate, and the rotating shaft is arranged on the bottom plate.

[0008] Preferably, a limit pin for limiting the rotation range of the rotating arm is provided on the bottom plate.

[0009] Preferably, the tail of the lever is provided with a spliced ​​buckle for connecting to the column, the buckle is formed by splicing two arc-shaped half buckles, and the arc-shaped inner wall of the buckle is provided with anti-slip grooves.

[0010] Preferably, a roller is provided at the front end of the rotating arm for buffering.

[0011] Preferably, the rear end of the rotating arm is connected to the driving rod through a connecting rod; the rotating arm and the connecting rod are hinged by a first hinge shaft, and the driving rod and the connecting rod are hinged by a second hinge shaft. When the door leaf is closed, the sum of the axial distance D1 between the rotating shaft and the first hinge shaft and the axial distance D2 between the first hinge shaft and the second hinge shaft, D1+D2, is greater than the axial distance D3 between the first hinge shaft and the second hinge shaft.

[0012] Preferably, when the door leaf is opened, the sum D3+D4 of the distance D3 between the first hinge axis and the second hinge axis and the distance D4 between the second hinge axis and the column axis is greater than the distance D5 between the first hinge axis and the column axis.

[0013] Preferably, a strip-shaped slide groove is provided at the rear end of the rotating arm, and a second hinge shaft is provided at the front end of the shifting rod. The second hinge shaft slides in the slide groove to drive the rotating arm to rotate.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Improving the stability of the door leaf: the use of a rotating arm increases the connection point between the door leaf and the vehicle body. The rotating arm and the column rotate in opposite directions, and the reverse movement is used to further lock the door leaf, making the locking more reliable; 2. Simple structure; 3. Applicable to a variety of working environments and has universal applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the door leaf auxiliary locking device of the utility model;

[0016] Figure 2 It is a top view of the door leaf auxiliary locking device of the utility model in a locked state;

[0017] Figure 3 This is a top view of the door leaf auxiliary locking device of the utility model in an open state;

[0018] Figure 4 It is a top view of the structure of another embodiment of the door leaf auxiliary locking of the utility model. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0020] Example 1: Figures 1 to 3The utility model discloses a door leaf auxiliary locking device, which is mainly composed of a baffle 4, a rotating arm 3, and a lever 1. The baffle 4 is fixedly mounted on the door leaf and moves with the door leaf. The baffle 4 has a transverse surface for connecting with the door leaf, and a vertical surface that forms a certain angle with the inner side wall of the door leaf 6. The two-face angle formed by the vertical surface and the inner wall of the door leaf 6 is less than 50 degrees. The transverse surface, the vertical surface and the inner wall of the door leaf 6 enclose a semi-enclosed (one side is open) receiving groove.

[0021] The rotating arm 3 is rotatably connected to the top of the vehicle body and is a bending arm. The corner is rotatably connected to the vehicle body. When driven, its front end can enter the receiving groove to assist in locking the door leaf, or the front end leaves the receiving groove to unlock the door leaf.

[0022] The rotating arm 3 is suspended on the top of the vehicle body through the bottom plate 5, and the bottom plate 5 is directly connected to the vehicle body. A rotating shaft 51 is provided on the bottom plate, and a mounting hole is provided at the corner of the rotating arm 3, and the rotating arm 3 is sleeved on the rotating shaft 51 through the mounting hole. A limit pin 52 is provided on the bottom plate 5, and the limit pin 52 limits the rotation range of the rotating arm 3 to prevent the rotating arm 3 from being driven to rotate excessively and squeeze the door leaf.

[0023] The rear end of the rotating arm 3 is connected to the door leaf column 7 and is driven to rotate by the column 7. The rear end of the rotating arm 3 is hinged to the connecting rod 2, and the rear of the connecting rod 2 is hinged to the lever 1, and the rear end of the lever 1 is fixedly connected to the column 7. When the door leaf 6 is opened, the column 7 drives the lever 1 to rotate, and the lever 1 pushes the rear end of the rotating arm 3 to rotate, so that the front end of the rotating arm 3 leaves the receiving groove; when the door leaf is closed, the lever 1 drives the rotating arm 3 to rotate so that the front end enters the receiving groove.

[0024] The rotating arm 3 and the connecting rod 2 are hinged via a hinge shaft 31 , and the shifting rod 1 and the connecting rod 2 are hinged via a hinge shaft 11 .

[0025] The distance between the axis of the rotating shaft 51 and the axis of the hinge shaft 31 is D1, the distance between the axis of the hinge shaft 31 and the axis of the hinge shaft 11 is D2, and the distance between the axis of the hinge shaft 31 and the axis of the hinge shaft 11 is D3. When the door leaf is closed, D1+D2>D3, so that when the door leaf is closed, the hinge shaft 31 does not cross the dead point.

[0026] The distance between the hinge shaft 11 and the axis of the column 7 is D4, and the distance between the hinge shaft 31 and the axis of the column 7 is D5. When the door leaf is opened, D3+D4>D5, so that when the door leaf is opened, the hinge shaft 11 does not cross the dead point.

[0027] The distance between the axis of the rotating shaft 51 and the axis of the hinge shaft 31 is D1, and the distance between the axis of the hinge shaft 31 and the axis of the hinge shaft 11 is D2, and D2≥D1.

[0028] The tail of the lever 1 is provided with a spliced ​​buckle 12. When assembled, the two half buckles of the buckle 12 are engaged with the outside of the column 7, so that the tail of the lever 1 is fixedly connected to the column 7. The arc-shaped side wall of the buckle is provided with anti-slip grooves. The front end of the rotating arm 3 is provided with a roller 32. When the door leaf is closed, the roller 32 is placed in the receiving groove.

[0029] Embodiment 2: Based on embodiment 1, Figure 4 As shown, this embodiment can also have the following deformation: a strip groove is provided at the rear of the rotating arm 3, and the hinge shaft 11 at the front end of the lever 1 is sleeved in the strip groove. When the door leaf 6 is opened, the column 7 drives the lever 1 to rotate, and the shaft 11 slides along the strip groove and drives the rear end of the rotating arm 3 to rotate, so that the front end of the rotating arm 3 leaves the accommodating groove; when the door leaf is closed, the lever 1 drives the rotating arm 3 so that its front end enters the accommodating groove.

Claims

1. A door leaf auxiliary locking device, characterized in that: The invention comprises a baffle (4) for connecting with a door leaf and forming a semi-enclosed receiving groove with the inner wall of the door leaf, a rotating arm (3) for connecting with a vehicle body, and a lever (1) for connecting the upright post of the door leaf and the rotating arm; the rotating arm (3) is a bent arm, which is rotatably connected with the vehicle body through a rotating shaft (51) at a corner, and the rear end is hinged to the lever (1); when the door leaf is closed, the lever (1) rotates away from the door leaf along with the upright post, pulling the rotating arm to rotate, and the front end of the rotating arm enters the receiving groove; when the door leaf is opened, the front end of the lever (1) approaches the door leaf, pushing the rotating arm to rotate, and the front end of the rotating arm leaves the receiving groove.

2. The door leaf auxiliary locking device according to claim 1, characterized in that: The corner of the rotating arm (3) is rotatably connected to the vehicle body through a bottom plate (5), and a rotating shaft (51) is arranged on the bottom plate.

3. The door leaf auxiliary locking device according to claim 2, characterized in that: The bottom plate (5) is provided with a limit pin (52) for limiting the rotation range of the rotating arm (3).

4. The door leaf auxiliary locking device according to claim 1, characterized in that: The rear end of the lever (1) is provided with a spliced ​​buckle (12) for connecting to a column. The buckle (12) is formed by splicing two arc-shaped half buckles, and the arc-shaped inner wall of the buckle is provided with anti-slip grooves.

5. The door leaf auxiliary locking device according to claim 1, characterized in that: A roller (32) is provided at the front end of the rotating arm (3).

6. The door leaf auxiliary locking device according to any one of claims 1 to 5, characterized in that: The rear end of the rotating arm (3) is connected to the lever (1) via a connecting rod (2); the rotating arm (3) and the connecting rod (2) are hinged via a first hinge shaft (31), and the lever (1) and the connecting rod (2) are hinged via a second hinge shaft (11); when the door leaf is closed, the sum D1+D2 of the axis distance D1 between the rotating shaft (51) and the first hinge shaft (31) and the axis distance D2 between the first hinge shaft (31) and the second hinge shaft (11) is greater than the axis distance D3 between the first hinge shaft (31) and the second hinge shaft (11).

7. The door leaf auxiliary locking device according to claim 5, characterized in that: When the door leaf is opened, the sum D3+D4 of the axis distance D3 between the first hinge axis (31) and the second hinge axis (11) and the axis distance D4 between the second hinge axis (11) and the column (7) is greater than the axis distance D5 between the first hinge axis (31) and the column (7).

8. The door leaf auxiliary locking device according to any one of claims 1 to 4, characterized in that: A strip-shaped slide groove is provided at the rear end of the rotating arm (3), and a second hinge shaft (11) is provided at the front end of the shifting rod (1). The second hinge shaft (11) slides in the slide groove to drive the rotating arm (3) to rotate.

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