Sliding plug door restraining assembly and double-opening sliding plug door

Abstract

The sliding plug door restraining assembly comprises a stop pin support, a cam and a fixing piece, one end of the stop pin support is hinged to the end of a bearing beam for supporting a door leaf to slide, the other end of the stop pin support is connected with the fixing piece, the cam is connected with the end of a lead screw for driving the door leaf to move, the cam rotates along with the lead screw, and the door leaf is closed. The stop pin support is driven by the bearing beam to be close to the lead screw, the cam pushes the stop pin support from the lower side of the stop pin support, and the upper side of the stop pin support abuts against the fixing piece. In the invention, the lead screw and the mounting frame are simultaneously introduced as constraint components of the bearing beam, so that the stable constraint of the bearing beam is realized.

Description

Technical Field

[0001] The invention relates to a plug sliding door accessory, in particular to a plug sliding door restraint component, and also to a double-opening plug sliding door. Background Art

[0002] The plug-in door has two functions: "plug" and "pull". When the door is opened, the door leaf is pushed out of the door hole for a certain distance and can slide along the outside of the car body. When the door is closed, the door leaf is pulled from the outside of the car body to the door hole and plugged in. After the door is closed, the door leaf and the outer wall of the car are in the same plane. This structure is conducive to reducing air resistance and noise generated by air vortexes during high-speed driving, and is widely used in subways and intercity vehicles.

[0003] One of the structural parts that supports the door leaf to perform the function of "stuck" into the car body is the load-bearing beam. The two ends of the load-bearing beam are slidably connected to the car body and can slide along the width direction of the car body. After closing the door, it is necessary to add constraints to the load-bearing beam to prevent the load-bearing beam from sliding, thereby constraining the door leaf. For example, the invention patent application with publication number CN 112901002 A discloses a double-opening plug sliding door system, in which an arc-shaped transmission frame is set in the middle of the load-bearing drive mechanism. When the car door is closed, the transmission frame is driven by the screw nut to fold and constrain the load-bearing beam. In the current solution, the load-bearing beam constraint mechanism is only set in the middle, and the constraints at both ends of the load-bearing beam are weak. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a double-opening plug sliding door with restraining function at both ends of the lifting load-bearing beam; another purpose of the present invention is to provide a double-opening plug sliding door to achieve multi-point restraint of the plug sliding door.

[0005] Technical solution: The Sierra door restraint assembly described in the present invention includes a pin bracket, a cam and a fixing part. One end of the pin bracket is hinged to the end of a load-bearing beam supporting the sliding of the door leaf, and the other end is connected to the fixing part. The cam is connected to the end of a screw rod driving the door leaf to move. As the screw rod rotates, the door leaf closes, and the pin bracket is driven by the load-bearing beam to approach the screw rod. The cam pushes the pin bracket from the bottom of the pin bracket so that the top of the pin bracket abuts against the fixing part.

[0006] Preferably, the fixing member is a slideway connected to a mounting frame at the end of the load-bearing beam, the slideway comprises a transverse section and an inclined section, and the angle between the transverse section and the inclined section is an acute angle.

[0007] Preferably, a first pin shaft is provided at one end of the stop pin bracket away from the load-bearing beam, and the stop pin bracket is slidably connected to the slideway via the first pin shaft.

[0008] Preferably, it also includes an elastic element, which is connected to a mounting frame at the end of the load-bearing beam. When the door leaf is closed, the upper side of the stop pin bracket abuts against the elastic element.

[0009] Preferably, the fixing member is a second pin shaft, and the end of the pin stop bracket away from the load-bearing beam is rotatably connected to the second pin shaft through a connecting rod, the pin stop bracket is driven by the load-bearing beam to approach the screw rod, and the pin stop bracket pushes the connecting rod to fold toward the upper side of the pin stop bracket, and the upper side of the pin stop bracket is abutted against the fixing member through the connecting rod.

[0010] Preferably, the fixing member is a second pin shaft, and an annular portion is provided at one end of the stop pin bracket away from the load-bearing beam, and the annular portion is hooked to the second pin shaft.

[0011] Preferably, a notch is provided on the inner wall of the annular portion. When the door leaf is closed, the second pin shaft extends into the notch. The end of the annular portion away from the load-bearing beam is thinned and provided with an inclined guide plate. When the door leaf is opened, the guide plate guides the stop pin bracket to avoid the cam.

[0012] Preferably, it also includes a restraining mechanism under the door leaf, which includes a first lock hook and a bracket. The first lock hook is connected to the inner side of the lower side of the door leaf, and the bracket is connected to the vehicle body. The opening of the first lock hook faces the front side of the door leaf, and the bracket extends toward the door leaf. The front end of the extended bracket is bent. When the door leaf is closed, the first lock hook moves with the door leaf and hooks the bent front end of the bracket.

[0013] Preferably, a mounting hole for the column to pass through is provided in the middle of the bracket.

[0014] A double-opening plug sliding door including the above-mentioned plug sliding door restraint assembly, wherein a vertical stop pin is provided at the bottom of the front side of the door leaf of the double-opening plug sliding door, an insert is provided at the middle of the threshold of the double-opening plug sliding door, and a groove is provided on the insert. When the door leaf is closed, the stop pin slides along the opening of the groove into the bottom of the groove to restrain the door leaf. The stop pin and the insert can reduce the force on the column when the door leaf is subjected to a load from the inside to the outside.

[0015] Preferably, the second lock hook is connected to the top of the column of the double-opening sliding door, and a lock buckle is provided on the inner side of the door leaf of the double-opening sliding door. The middle part of the second lock hook is connected to the load-bearing beam through a connecting piece. When the door leaf is closed, the load-bearing beam pulls the second lock hook to rotate, and the lock buckle slides into the second lock hook along with the door leaf.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. Adding constraints at both ends of the load-bearing beam: Introducing screw rods and mounting frames as constraint components of the load-bearing beam at the same time to achieve stable constraint of the load-bearing beam; 2. Simple structure, easy to debug and assemble; 3. Multi-point constraint: Constraint structures are set on the load-bearing beam, the top and the bottom of the door leaf, which greatly improves the constraint force of the door leaf and can enhance the door leaf to resist the wind pressure load caused by high-speed operation of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the door leaf system equipped with a restraining mechanism;

[0018] Figure 2It is a schematic structural diagram of a door leaf driving mechanism and a load-bearing beam restraining assembly according to a first embodiment of the present invention;

[0019] Figure 3 It is a schematic structural diagram of a load-bearing beam restraint assembly according to a first embodiment of the present invention;

[0020] Figure 4 A side cross-sectional view of a locking state of a load-bearing beam restraint assembly according to a first embodiment of the present invention;

[0021] Figure 5 A side cross-sectional view of the load beam restraint assembly in the unlocked state according to the first embodiment of the present invention;

[0022] Figure 6 It is a schematic structural diagram of a load-bearing beam restraint assembly and a restraint assembly above a door leaf according to a first embodiment of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the locking state of the upper restraint assembly of the door leaf according to the first embodiment of the present invention;

[0024] Figure 8 This is a schematic structural diagram of the unlocked state of the upper restraint assembly of the door leaf according to the first embodiment of the present invention;

[0025] Fig. 9 It is a schematic structural diagram of a locking state of a restraining assembly below a door leaf according to the first embodiment of the present invention;

[0026] Fig.10 This is a schematic structural diagram of a door leaf bottom restraint assembly in a locked state according to the first embodiment of the present invention;

[0027] Fig.11 It is a side view of the structure of the load-bearing beam restraint assembly according to the second embodiment of the present invention;

[0028] Fig.12 It is a side view of the load-bearing beam restraint assembly structure according to the third embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0030] Example 1: Figure 1 As shown, the present invention discloses a plug door restraint assembly, which mainly includes three parts: a load-bearing beam restraint assembly, an upper door leaf restraint assembly, and a lower door leaf restraint assembly.

[0031] like Figure 2The existing bearing drive mechanism of the plug sliding door includes a bearing beam 103, a screw rod 104, and a motor 105. The bearing beam 103, the screw rod 104, and the motor 105 are all installed on the top of the vehicle body door opening through a mounting frame. The bearing beam 103 and the screw rod 104 are arranged along the length direction of the mounting frame. The two ends of the screw rod 104 are rotatably connected to the mounting frame. The two ends of the bearing beam 103 are slidably connected to the mounting frame through a long hole. The length direction of the long hole is consistent with the width direction of the vehicle body. The connection method between the screw rod 104 and the bearing beam 103 is as follows: the screw rod 104 is symmetrically sleeved with a screw rod nut, one side of the screw rod nut is hinged to one end of the arc-shaped transmission frame through a pin shaft, and the other end of the transmission frame is hinged to a transmission plate through a pin shaft. The transmission plate covers the top of the bearing beam 103, and the transmission plate is connected to the left and right door frames 101 and 102. The left and right door frames 101 and 102 are connected to the left and right door leaves 3 and 2. The operating principle of the load-bearing drive mechanism is as follows: the motor 105 drives the screw rod 104 to rotate, and the screw rod 104 drives the screw nut to move. When the door leaf slides outside the vehicle, the rotation freedom of the screw nut is limited by the guide rail (not shown), and the screw nut can only move along the length direction of the screw rod 104. When the door leaf is inserted into the vehicle body, the guide rail releases the rotation freedom of the screw nut, and the rotation of the screw nut drives the transmission frame to fold towards the screw nut, and the transmission frame drives the load-bearing beam 103 to slide along the long hole through the transmission plate.

[0032] The present invention adds a load-bearing beam constraint assembly at both ends of the screw rod 104, such as Figures 2 to 5 The load-bearing beam constraint assembly is mainly composed of a stop pin bracket 107, a cam 106, and a fixing part. The stop pin bracket 107 is located at both ends of the load-bearing beam 103, the stop pin bracket 107 and the top of the load-bearing beam 103 are hinged by a pin shaft, and the other end is connected to the fixing part. When the door leaf is closed, the fixing part forms an upper side constraint of the stop pin bracket 107; the cam 106 is located at both ends of the screw rod 104, is fixedly connected to the screw rod 104, and rotates synchronously with the screw rod 104. When the door leaf is closed, it is driven by the screw rod 104 to form a lower side constraint of the stop pin bracket 107. Therefore, the two sides of the stop pin bracket 107 are respectively constrained by the cam 106 and the fixing part, thereby increasing the constraint of the load-bearing beam 103.

[0033] In this embodiment, the fixing member is a slide 110, which is located on the side walls at both ends of the mounting frame and includes two sections, a transverse section and an inclined section, and the angle between the transverse section and the inclined section is an acute angle. The transverse section makes the stop pin bracket 107 close to the cam 106, and the inclined section makes the stop pin bracket 107 tilted at a certain angle relative to the upper surface of the load beam 103, so that the cam 106 can resist the stop pin bracket 107 from the lower side of the stop pin bracket 107. A pin shaft 1071 is provided at one end of the stop pin bracket 107 away from the load beam 103, and the pin shaft 1071 is slidably connected to the slide 110 to guide the stop pin bracket 107 to slide along a preset track.

[0034] like Figure 4When the door leaf is closed, the load beam 103 slides toward the inside of the vehicle, and the stop pin bracket 107 slides along the slideway 110 with the load beam 103. At the same time, the cam 106 rotates with the screw rod 104, and the door leaf is closed. The cam 106 presses against the stop pin bracket 107 from below, and the inclined section of the slideway 110 presses against the pin shaft 1071 end of the stop pin bracket 107, limiting the stop pin bracket 107, thereby locking the two ends of the load beam 103. Figure 5 When the door leaf needs to be opened, the cam 106 rotates in the other direction along with the screw rod 104 and leaves the stop pin bracket 107 . The constraints of the stop pin bracket 107 and the load-bearing beam 103 are released, and the stop pin bracket 107 slides along with the load-bearing beam 103 .

[0035] An elastic element 109 is provided on the mounting frame above the slideway. When the door leaf is closed, the stop pin bracket 107 and the elastic element 109 abut against each other, and the elastic element 109 is slightly deformed by the force. When the door leaf is opened, the elastic element 109 pushes the stop pin bracket 107 to return to its original position.

[0036] The restraint assembly above the door leaf includes a lock hook 603 and a lock buckle 604. The lock buckle 604 is installed on the inner side of the left and right door leaves 3 and 2. The lock hook 603 is approximately L-shaped, with a connecting hole set at the middle corner and a mounting hole set at the tail. The mounting holes are connected to the columns 5 and 6. The connecting holes are connected through a connecting rod 602, a fork joint 601 and a bearing beam 103. The bearing beam 103 moves along the width direction of the vehicle body, driving the lock hook 603 to rotate. Specifically: Figure 7 As shown, when the door leaf is closed, the load-bearing beam 103 slides inwardly along the width direction of the vehicle body, driving the lock hook 603 to rotate counterclockwise by a certain angle. At the same time, the lock buckle 604 moves with the door leaf, enters the front end of the lock hook 603, and is hooked by the lock hook 603; when the door leaf is opened, as shown in FIG. Figure 8 The load-bearing beam 103 slides outwardly along the width direction of the vehicle body, pushing the lock hook 603 to rotate clockwise by a certain angle. At the same time, the lock buckle 604 moves with the door leaf and leaves the lock hook 603.

[0037] like Fig. 9 As shown, the restraint assembly below the door leaf includes a bracket 607 and a lock hook 606. The lock hook 606 is connected to the inner side of the door leaf, with the opening facing the front side of the door leaf. The bracket 607 is connected to the inner side of the vehicle body. The bottom of the bracket 607 extends toward the door leaf. The front end of the extended bracket 607 is bent. When the door leaf is closed, the lock hook 606 moves with the door leaf and hooks the bent front end of the bracket 607. The lower part of the door leaf is restrained, the force on the lower swing arm 60501 and the door leaves 2 and 3 is reduced, and the door leaf is prevented from moving and shaking. A mounting hole is provided in the middle of the lock hook bracket 607, and the mounting hole is for the column to pass through.

[0038] According to the movement trajectory of the bottom of the door leaf, a lower stop pin 4 can also be installed at the bottom of the left and right door leaves 3 and 2, and a corresponding insert 701 is installed on the door sill 7. The insert 701 has a groove. After the door leaf is closed, the lower stop pin 4 enters the bottom of the groove of the door sill insert 701 from the groove opening to constrain the bottom of the door leaf. When the door leaf is subjected to a load from the inside to the outside, the force on the column is reduced.

[0039] Example 2: Fig.11 On the basis of Example 1, this example has the following variations: the fixing member is a pin 111, and the third pin 111 is installed on the inner side of the side walls at both ends of the mounting frame, and the end of the stop pin bracket 107 away from the load-bearing beam 103 is rotatably connected to the pin 111 through a connecting rod 112. When the door leaf is closed, the stop pin bracket 107 is driven by the load-bearing beam 103 to approach the screw rod 104, and the stop pin bracket 107 approaches the cam 106, driving the connecting rod 112 to rotate counterclockwise, and the connecting rod 112 folds toward the upper side of the stop pin bracket 107. The cam 106 is driven by the screw rod 104 to rotate clockwise, and the stop pin bracket 107 is pressed against the stop pin bracket 107 from the bottom, and the connecting rod and the pin 111 limit the stop pin bracket 107 from the top of the stop pin bracket 107, thereby constraining the upper and lower sides of the stop pin bracket 107 and the load-bearing beam 103.

[0040] The connecting rod 112 can be an H-shaped connecting rod, which is clamped at both ends of the stop pin bracket 111. The middle cross bar of the connecting rod 112 increases the strength of the connecting rod and can also be used to support the upper side of the stop pin bracket 107.

[0041] Example 3: Fig.11 On the basis of Example 1, this embodiment has the following variations: the fixing member is a pin shaft 111, and an annular portion is provided at one end of the pin stop bracket 107 away from the load-bearing beam 103. The pin stop bracket 107 is hung on the pin shaft 111. When the door leaf is closed, the pin stop bracket 107 is driven by the load-bearing beam 103 to approach the screw rod 104, and the upper half of the side branch of the annular portion slides along the pin shaft 111 and approaches the cam 106. The cam 106 is driven by the screw rod 104 to rotate clockwise, pushing the lower half of the side branch of the annular portion to rise from the bottom of the pin stop bracket 107, so that the upper surface of the lower half of the side branch of the annular portion abuts against the pin shaft 111.

[0042] A notch 1072 is provided on the upper surface of the lower half of the side branch of the annular portion. When the annular portion and the pin shaft 111 are in contact, the pin shaft 111 falls into the notch to improve stability. The thickness of the side wall of the annular portion away from the load-bearing beam 103 is reduced (thinned), and an inclined guide plate 1073 is provided. When the door leaf is opened, the dead weight of the pin bracket 107 drives the pin bracket 107 to fall, and the rotation of the cam 106 will hit the pin bracket 107 to generate noise. In order to solve this problem, the guide plate 1073 guides the end of the pin bracket 107 to be lifted a certain distance, and cooperates with the thinning of the end to form an avoidance space for the cam 106.

Claims

1. A sliding plug door restraint assembly, characterized in that: The invention comprises a stop pin bracket (107), a cam (106) and a fixing part. One end of the stop pin bracket (107) is hinged to the end of a load-bearing beam supporting the sliding of a door leaf, and the other end is connected to the fixing part. The cam (106) is connected to the end of a screw rod driving the door leaf to move. As the screw rod rotates, the door leaf closes, and the stop pin bracket (107) is driven by the load-bearing beam to approach the screw rod. The cam (106) pushes the stop pin bracket (107) from the lower side of the stop pin bracket (107), so that the upper side of the stop pin bracket (107) abuts against the fixing part.

2. The plug door restraint assembly according to claim 1, characterized in that: The fixing member is a slideway (110), the slideway (110) is connected to a mounting frame at the end of the load-bearing beam, the slideway (110) comprises a transverse section and an inclined section, and the angle between the transverse section and the inclined section is an acute angle.

3. The plug door restraint assembly according to claim 2, characterized in that: A first pin shaft (1071) is provided at one end of the stop pin bracket (107) away from the load-bearing beam (103), and the stop pin bracket (107) is slidably connected to the slideway (110) via the first pin shaft (1071).

4. The plug door restraint assembly according to claim 2, characterized in that: It also includes an elastic element (109), which is connected to a mounting frame at the end of the load-bearing beam. When the door leaf is closed, the upper side of the stop pin bracket (107) abuts against the elastic element (109).

5. The plug door restraint assembly according to claim 1, characterized in that: The fixing member is a second pin shaft (111), and the end of the pin stop bracket (107) away from the load-bearing beam is rotatably connected to the second pin shaft (111) through a connecting rod (112). The pin stop bracket (107) is driven by the load-bearing beam to approach the screw rod, and the pin stop bracket (107) pushes the connecting rod (112) to fold toward the upper side of the pin stop bracket (107).

6. The plug door restraint assembly according to claim 1, characterized in that: The fixing member is a second pin shaft (111), and an annular portion is provided at one end of the stop pin bracket (107) away from the load-bearing beam (103), and the annular portion is hooked to the second pin shaft (111).

7. The plug door restraint assembly according to claim 6, characterized in that: A notch (1072) is provided on the inner wall of the annular portion. When the door leaf is closed, the second pin shaft (111) extends into the notch (1072). The end of the annular portion away from the load-bearing beam is thinned and provided with an inclined guide plate (1072). When the door leaf is opened, the guide plate (1072) guides the stop pin bracket (107) to avoid the cam (106).

8. The plug door restraint assembly according to claim 1, characterized in that: The vehicle body further comprises a restraining mechanism below the door leaf, wherein the restraining mechanism below the door leaf comprises a first locking hook (606) and a bracket (607). The first locking hook (606) is connected to the inner side below the door leaf, and the bracket (607) is connected to the vehicle body. The opening of the first locking hook (606) faces the front side of the door leaf, and the bracket (607) extends toward the door leaf. The front end of the extended bracket (607) is bent. When the door leaf is closed, the first locking hook (606) moves with the door leaf and hooks the bent front end of the bracket (607). A mounting hole for a column to pass through is provided in the middle of the bracket (607).

9. A double-opening plug sliding door, characterized in that: It comprises the sliding door restraining assembly as described in any one of claims 1 to 8, wherein a vertical stop pin (4) is provided at the bottom of the front side of the door leaf of the double-opening sliding door, an insert block (701) is provided at the middle of the door sill of the double-opening sliding door, and a groove is provided on the insert block (701). When the door leaf is closed, the stop pin (4) slides along the opening of the groove into the bottom of the groove to restrain the door leaf.

10. The double-opening sliding door according to claim 9, characterized in that: The top of the column of the double-opening plug sliding door is connected to the second lock hook (603), the inner side of the door leaf of the double-opening plug sliding door is provided with a lock buckle (604), the middle part of the second lock hook (603) is connected to the load-bearing beam through a connecting piece, when the door leaf is closed, the load-bearing beam pulls the second lock hook (603) to rotate, and the lock buckle (604) slides into the second lock hook (603) along with the door leaf.

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