Auxiliary locking device for sliding plug door

Abstract

The utility model discloses an auxiliary locking device of a sliding plug door, which comprises an electromagnet and an attraction plate which are attracted after being electrified, a support used for being connected with a lower swing arm of a door leaf is arranged on the back face of the attraction plate, and a mounting plate used for being connected with a rotating shaft mounting seat of the lower swing arm is arranged on the back face of the electromagnet. The door leaf is closed, the electromagnet and the suction plate are attracted, the supporting force of the lower swing arm to the door leaf is enhanced, relative sliding of the door leaf and the vehicle body is reduced, and noise is reduced. The electromagnet is connected with the lower swing arm rotating shaft installation base, the suction plate is connected with the lower swing arm, the electromagnet is fixed relative to a vehicle body, wire harness installation is convenient, the device can be incorporated into a sliding plug door opening and closing control system, one-key opening and closing are achieved, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to a plug sliding door accessory, in particular to an auxiliary locking device for the plug sliding door. Background Art

[0002] The plug-type sliding door has two actions: plugging and pulling. The door leaf is guided by the door frame and the lower swing arm to complete these two actions. Due to the installation gap between the door leaf and the guide structure, if the bus is bumpy during driving, the door leaf will vibrate up and down relative to the vehicle body, causing noise.

[0003] One way to solve this noise is to limit the up and down vibration of the door leaf. For example, the utility model patent with publication number CN 213383832 U discloses a plug door anti-vibration mechanism, which installs an anti-vibration block with a fitting groove on the door frame and an anti-vibration block with a protrusion at the corresponding position of the door leaf. When the door leaf is closed, the protrusion slides into the fitting groove to limit the up and down vibration of the closed door leaf, thereby reducing noise. This device can indeed reduce noise generation, but the mounting block and the conical block are both installed in the corner enclosed by the door leaf and the lower swing arm. The device is limited in size and installation accuracy, and it will also affect the normal closing of the door leaf, and the effect is not good. The utility model patent application with publication number CN 211950074 U discloses a noise reduction device for electric plug sliding doors of buses. A cylinder and a baffle are installed between the car body and the lower swing arm respectively. When the door leaf is closed, the cylinder is ventilated, the cylinder head extends out to hold the baffle, and the cylinder applies a pressure to the lower swing arm body in the direction of the vehicle, thereby increasing the stability of the entire door leaf and reducing the shaking of the door leaf; when the door leaf is opened, the cylinder loses air, the cylinder head retracts, the swing arm is in a free state, and the door leaf can be opened and closed freely. Consistent with the first solution, this device also has the problems of limited volume and installation accuracy, and improper installation of the cylinder will cause the door leaf to be pushed outward excessively, causing the door leaf to deform and increase noise. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide an auxiliary locking device for a plug door which is easy to install and can reduce the vibration and noise of the door leaf.

[0005] Technical solution: The utility model discloses an auxiliary locking device for a Sierra door, comprising an electromagnet and a suction plate which are attracted when energized, a bracket for connecting to the lower swing arm of the door leaf being provided on the back of the suction plate, and a mounting plate for connecting to the lower swing arm rotating shaft mounting seat being provided on the back of the electromagnet.

[0006] After the electromagnet and the suction plate are attracted, that is, when the door leaf is closed, the support strength of the lower swing arm on the door leaf is enhanced, reducing the relative sliding between the door leaf and the vehicle body and reducing noise. The electromagnet is connected to the lower swing arm shaft mounting seat, fixed relative to the vehicle body, connected to the suction plate and the lower swing arm, and the wiring harness is easy to install. The device can be incorporated into the plug door opening and closing control system, one-button opening and closing, and easy operation.

[0007] Preferably, in order to reduce the noise generated when the electromagnet is attracted, a buffer sponge is provided on the electromagnet or the suction plate.

[0008] Preferably, in order to facilitate the installation of the electromagnet, a wire clamp for fixing the electromagnet wire harness is provided on the inner side of the mounting plate.

[0009] Preferably, in order to facilitate adjustment of the direction of the electromagnet wire harness, the wire clamp is detachably connected to the side arm of the mounting plate close to the electromagnet.

[0010] Preferably, in order to be compatible with the lower swing arm shaft mounting seat, the side arm of the mounting plate away from the electromagnet is provided with a mounting groove for accommodating the support foot of the lower swing arm shaft mounting seat.

[0011] Preferably, in order to facilitate the installation of the suction plate, the bracket is L-shaped.

[0012] Preferably, in order to avoid affecting the rotation of the lower swing arm, the side arm below the mounting slot is provided with a mounting hole for fixing the mounting plate, and the mounting hole is provided on one side or both sides of the lower swing arm of the door leaf. The lower swing arm is generally sheet-shaped, and the mounting hole is provided on the side of the lower swing arm, and the hole avoids the installation position of the lower swing arm to avoid affecting the rotation of the lower swing arm.

[0013] Preferably, the electromagnet is connected to a control component for controlling the opening of the door leaf. When the door leaf is opened, the electromagnet is powered off, so that the door leaf can be opened smoothly.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. It avoids the noise caused by the shaking of the door leaf; 2. It is easy to install; 3. It is easy to operate; 4. It has little impact on the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle.

[0017] Figure 3 It is a top view of the utility model.

[0018] Figure 4 It is a side view 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] In the prior art, the top of the door leaf of the plug door is connected to the vehicle body through a door carrier, and the bottom is connected to the vehicle body through a lower swing arm 5. The end of the lower swing arm 5 close to the door leaf is a support end, and the support end is connected to a horizontal guide rail provided on the door leaf through a roller. The end of the lower swing arm 5 close to the vehicle body is a rotating end, and the rotating end is rotatably connected to the vehicle body through a rotating shaft 41 and a rotating shaft mounting seat 42.

[0021] As Figures 1 to 4 shown, a plug door auxiliary locking device disclosed by the present utility model mainly consists of an electromagnet 1 and a suction plate 2. An installation plate 11 is provided on the back of the electromagnet 1 for fixedly connecting the electromagnet and the lower swing arm rotating shaft mounting seat 41. A bracket 21 is provided on the back of the suction plate 2 for fixedly connecting the suction plate 2 and the lower swing arm 5.

[0022] The installation plate 11 is L-shaped. An installation groove 13 is provided on the side arm of the installation plate 11 close to the connection with the rotating shaft mounting seat 41. The installation groove is used to accommodate a support leg of the lower swing arm rotating shaft mounting seat 41. Among them, an installation hole 14 is also provided on the side arm of the installation plate 11 below the installation groove 13. The position of the installation hole 14 is determined according to the installation position of the lower swing arm 5, and is provided on one side of the lower swing arm or symmetrically on both sides. When the door leaf is opened, the lower swing arm needs to rotate. The installation hole 14 is used to fix the installation plate 11 on the rotating shaft mounting seat 41 and avoid the rotation area of the lower swing arm to prevent affecting the rotation of the lower swing arm.

[0023] A wire clamp for fixing the electromagnet wire harness is provided inside the installation plate 11. The wire clamp is detachably connected to the side arm of the installation plate close to the electromagnet, which is convenient for adjusting the wire harness direction of the electromagnet. The wire clamp 12 and the installation plate 11 are detachably connected by screws.

[0024] During use, the electromagnet 1 is connected to the rotating shaft mounting seat 41 through the installation plate 11 and screws. The suction plate is fixedly connected to the top surface of the lower swing arm 5 through the bracket 21. The electromagnet wire harness is fixed in the wire clamp 12 and incorporated into the door opening and closing control system, that is, the installation of the auxiliary locking device is completed. When the door leaf is closed, the electromagnet 1 is powered on, and the electromagnet 1 and the suction plate 2 are attracted to each other, increasing the pulling force of the vehicle body on the lower swing arm 5. This pulling force is finally transmitted to the door leaf through the roller 51 of the lower swing arm 5, so that the door leaf obtains a pulling force in the vehicle body width direction and a pressure in the vehicle body length direction. This acting force can reduce the horizontal and vertical shaking of the door leaf relative to the vehicle body and reduce the noise generated by the shaking of the door leaf. When the door leaf is opened, the electromagnet 1 is powered off, and the electromagnet 1 and the suction plate 2 are disengaged, and the lower swing arm can rotate relative to the vehicle body.

[0025] A buffer sponge 3 is provided between the electromagnet 1 and the suction plate 2. When the electromagnet and the suction plate are attracted to each other, the sound is relatively loud. The buffer sponge 3 is used to reduce the noise generated when the electromagnet 1 and the suction plate 2 are attracted to each other. The buffer sponge can be fixed on the surface of the electromagnet 1 or on the surface of the suction plate 2.

Claims

1. A plug door auxiliary locking device, characterized in that: The invention comprises a lower swing arm (5) connected to the bottom of a door leaf of a plug door, an electromagnet (1) and a suction plate (2) which are attracted when powered on, the rotating end of the lower swing arm (5) being rotatably connected to a vehicle body via a rotating shaft (41) and a rotating shaft mounting seat (42), the back of the suction plate (2) being provided with a bracket (21) for connecting to the lower swing arm of the door leaf, the back of the electromagnet (1) being provided with a mounting plate (11) for connecting to the lower swing arm rotating shaft mounting seat, the mounting plate being L-shaped, the side arm of the mounting plate (11) being away from the electromagnet (1) being provided with a mounting groove (13) for accommodating a support leg of the lower swing arm rotating shaft mounting seat, the side arm below the mounting groove (13) being provided with a mounting hole (14) for fixing the mounting plate, the mounting hole (14) being provided on one side or both sides of the lower swing arm of the door leaf.

2. The plug door auxiliary locking device according to claim 1, characterized in that: The electromagnet or the suction plate is provided with a buffer sponge (3).

3. The auxiliary locking device for sliding plug doors according to claim 1, characterized in that: A wire clamp (12) for fixing the electromagnet wire harness is provided on the inner side of the mounting plate (11).

4. The plug door auxiliary locking device according to claim 3, characterized in that: The wire clamp (12) is detachably connected to the side arm of the mounting plate (11) close to the electromagnet.

5. The auxiliary locking device for sliding plug doors according to claim 1, characterized in that: The bracket (21) is L-shaped.

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