Door system driving mechanism

Abstract

The invention belongs to the technical field of vehicle auxiliary equipment, and relates to a door system driving mechanism, a main body structure comprises a bearing rack assembly and a moving rack assembly arranged on the bearing rack assembly, a main body structure of the bearing rack assembly comprises an end bearing mounting frame, a middle bearing mounting frame, a guide rail and a sliding groove formed in the middle bearing mounting frame, a main body structure of the moving rack assembly comprises a sliding guide column, an end sliding hanging frame, a middle sliding hanging frame, a door leaf bearing assembly and a lead screw, the end sliding hanging frame, the middle sliding hanging frame and the door leaf bearing assembly are arranged on the sliding guide column, and the lead screw is arranged on the middle sliding hanging frame in a penetrating mode. The end plug-pull hanging frame and the middle plug-pull hanging frame slide along the plug-pull guide column, the roller assembly slides along the sliding groove, after the roller assembly is plugged in place, the roller assembly is driven by the rotating frame to fall into a groove in the tail of the sliding groove, locking is achieved, at the moment, the rotating center of the roller assembly is lower than the horizontal line where the rotating center of the rotating frame is located, and a torsional spring provides retaining force, so that locking is achieved. And the locking state is locked.

Description

Technical field:

[0001] The invention belongs to the technical field of vehicle auxiliary equipment, and in particular relates to a door system driving mechanism, which reduces the failure rate of door opening and closing and is applied to various vehicle door systems. Background technology:

[0002] The driving mechanism is an important part of the electric plug door system, which can realize the door opening and closing action of the door system. The driving mechanism of the door system in the prior art has the defect of many locking point failures. For example, Chinese Patent No. 202211365779.8 discloses a multi-point synchronous locking plug door system, including a base plate with a left bracket and a right bracket fixed at both ends and a guide slide, a load-bearing drive assembly and a synchronization rod are provided between the brackets on both sides of the base plate, and the load-bearing drive assembly includes a left hanger, a right hanger, a screw rod, a long guide column and a motor assembly; the two hangers can move along the Y direction and are respectively arranged on the two brackets; the two ends of the screw rod are rotatably fixed to the hangers on both sides, driven by the motor assembly, and a nut that cooperates with the screw rod is externally provided; the two ends of the long guide column are fixed to the hangers on both sides, and a slide cylinder that is externally fixedly connected to the door leaf is connected to the nut and driven by the nut to move along the long guide column, and a guide wheel that moves in the guide slide is fixed on the slide cylinder; the two ends of the synchronization rod are rotatably fixed to the brackets on both sides, and the synchronization rod and the screw rod are connected by several hinge structures provided at both ends and the middle part, and the hinge structure includes a guide rod and two connecting rods hinged to the guide rod; a locking tension spring for maintaining the lock is provided between the two ends of the guide rod and the two brackets; the hinges at both ends The first connecting rod of the chain structure is fixedly connected to the synchronous rod, and the second connecting rod is rotationally connected to the lead screw; the second connecting rod of the middle hinge structure is fixedly connected to the nut and moves therewith; the lead screw, the synchronous rod and the guide rod are parallel to each other; when the bearing drive assembly moves perpendicular to the bottom plate direction, the lead screw rotates to make the nut drive the middle hinge structure to move, and under the action of the synchronous rod and the guide rod, each hinge structure moves synchronously, and the angle between its two connecting rods changes together; when the axes of the synchronous rod, the guide rod and the lead screw are coplanar, each hinge structure reaches the mechanical dead point position; at this time, the lead screw continues to rotate, and drives each hinge structure to cross the mechanical dead point position at the same time through the nut; when the two brackets contact the first connecting rods of the hinge structures at both ends and the slide cylinder contacts the second connecting rod of the middle hinge structure, the movement of each hinge structure is restricted and stops, and the door is locked; the motor assembly drives the lead screw to rotate in the opposite direction, and the nut and the lead screw rotate together to drive the second connecting rod to rotate, and under the action of the synchronous rod and the guide rod, each hinge structure synchronously crosses the mechanical dead point position, and the door is unlocked.Chinese Patent 202420420607.4 discloses a plug sliding door driving structure, including a main structure, a displacement structure, a door body swingable connection structure and a jet cleaning structure, the main structure including a horizontal plate, a first vertical plate, a second vertical plate, a first fixed plate and a second fixed plate, the second fixed plate and the second vertical plate are respectively welded with a first rectangular plate and a second rectangular plate on one side, bearings are arranged in the first rectangular plate and the second rectangular plate through reserved grooves, a screw rod is sleeved in the bearing, a screw block is sleeved on the outer side of the screw rod, a rectangular block is connected to one side of the screw block, a ventilation cavity is arranged in the rectangular block, an air inlet pipe and an air outlet connected to the ventilation cavity are respectively arranged on the top and one side of the rectangular block, a mounting plate is welded at one end of the top of the rectangular block, a mounting plate is arranged on the top of the mounting plate through a fixed seat, a blower is arranged on the top of the mounting plate through a mounting frame, and the air outlet end of the blower is connected to the top of the air inlet pipe through a connecting pipe The gear train is connected to the gear unit by a plurality of gears, and the gear train is connected to the gear train through a plurality of gears, and the gear train is connected to the gear train by a plurality of gears. Chinese patent 202323147848.0 discloses an electric plug door driving mechanism, including a cylinder and an exhaust assembly, the exhaust assembly is installed on the cylinder barrel of the cylinder, the exhaust assembly includes a mounting sleeve, a spring plugging assembly and an electromagnetic cover assembly, the spring plugging assembly is arranged in the mounting sleeve, and the electromagnetic cover assembly is covered on the mounting sleeve; the spring plugging assembly includes a stainless steel plate, a rubber sealing ring and a spring, one end of the spring is welded to one side of the stainless steel plate, the end of the spring away from the stainless steel plate is welded to the bottom of the mounting sleeve, the side of the stainless steel plate away from the spring is glued and fixed to the rubber sealing ring, the electromagnetic cover assembly includes a sleeve cover, an annular electromagnet, a sealing ring groove and an air hole, the annular electromagnet is fixedly installed in the sleeve cover, one side of the annular electromagnet is provided with a sealing ring groove corresponding to the rubber sealing ring, and the air hole is opened through the top of the sleeve cover. Therefore, it is necessary to develop and design a new plug door driving mechanism with reliable locking, few parts and easy maintenance. Summary of the invention:

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to develop and design a plug-in door drive mechanism. After the door is inserted into place, the rotation center of the roller assembly is lower than the horizontal line where the rotation center of the rotating frame is located, and the door is kept in a locked state by the retaining force provided by the torsion spring.

[0004] In order to achieve the above-mentioned object, the main structure of the door system driving mechanism of the present invention comprises a bearing frame component and a moving frame component arranged thereon;

[0005] The main structure of the load-bearing frame includes an end load-bearing mounting frame, a middle load-bearing mounting frame and a guide rail, and a slide groove provided on the middle load-bearing mounting frame;

[0006] The main structure of the moving frame includes a sliding guide column and an end plug-in hanger, a middle plug-in hanger, a door leaf bearing assembly, and a lead screw passing through the middle plug-in hanger;

[0007] The main structure of the middle Sierra hanger includes a driving motor and a rotating frame and a driving gear connected thereto, a roller assembly and a torsion spring arranged on the rotating frame, a driven gear meshing with the driving gear, and a driving synchronous pulley connected to the driven gear, the roller assembly is embedded in the slide groove, and the driving pulley is connected to the driven pulley arranged on the lead screw through a synchronous belt;

[0008] The main structure of the door leaf bearing assembly includes a connecting seat and a nut connecting block arranged thereon, a door leaf connecting plate and a guide roller. The door leaf connecting seat assembly is mounted on the sliding guide column for movement, the nut connecting block is nested in the nut arranged on the lead screw, and the guide roller is embedded in the guide rail.

[0009] The end bearing mounting frame, the middle bearing mounting frame and the guide rails of the present invention are all arranged on the bearing cover plate;

[0010] Both the end bearing mounting frame and the middle bearing mounting frame are provided with plug guide posts to facilitate installation of the end plug hanger and the middle plug hanger;

[0011] The lead screw is passed through the middle Sierra hanger, and the follower pulley arranged on it is connected with the driving synchronous pulley through a synchronous belt;

[0012] The driving motor and the rotating frame are arranged on the bracket seat;

[0013] The driven gear is connected to the driving synchronous pulley through a pin and then installed on the pin shaft.

[0014] The locking principle of the door system drive mechanism involved in the present invention is: after being inserted into place, the roller assembly falls into the groove at the tail of the slide slot to be locked. At this time, the rotation center of the roller assembly is lower than the horizontal line where the rotation center of the rotating frame is located, and the holding force provided by the torsion spring locks the locked state.

[0015] Compared with the prior art, the present invention has a main structure comprising a bearing frame component and a moving frame component arranged thereon, the main structure of the bearing frame component comprises an end bearing mounting frame, a middle bearing mounting frame and a guide rail, and a slide groove opened on the middle bearing mounting frame, the main structure of the moving frame component comprises a sliding guide column and an end plug hanger, a middle plug hanger and a door leaf bearing assembly arranged thereon, and a lead screw passed through the middle plug hanger. During operation, a driving motor drives the lead screw to rotate, and while the guide roller slides along the guide rail, the end plug hanger and the middle plug hanger slide along the plug guide column, and the roller assembly slides along the slide groove. After being inserted into place, the roller assembly falls into the groove at the tail of the slide groove driven by the rotating frame to achieve locking. At this time, the rotation center of the roller assembly is lower than the horizontal line where the rotation center of the rotating frame is located, and the holding force provided by the torsion spring locks the locked state. The structure is simple, and the preferred technical solution is provided for the door drive system of rail vehicles, thereby improving the applicability of the door. Description of the drawings:

[0016] Figure 1 It is a schematic diagram of the main structural principle of the present invention.

[0017] Figure 2 It is an exploded view of the main structure of the present invention.

[0018] Figure 3 The present invention is an exploded view of the main structure of the supporting frame.

[0019] Figure 4 The present invention is an exploded view of the main structure of the motion frame assembly.

[0020] Figure 5 It is a schematic diagram of the main structural principle of the middle Sierra hanger assembly involved in the present invention.

[0021] Figure 6 It is a cross-sectional view of the plug-in locked state of the present invention.

[0022] Figure 7 It is a cross-sectional view of the plug-out unlocking state of the present invention.

[0023] Figure 8 It is a schematic diagram of the locking principle of the present invention.

[0024] Fig. 9 It is a schematic diagram of the sliding closed state of the present invention.

[0025] Fig.10 It is a schematic diagram of the sliding opening state of the present invention. Specific implementation method:

[0026] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1:

[0028] The main structure of the door system driving mechanism involved in this embodiment is as follows Figure 1-2 As shown, it includes a bearing rack component 1 and a moving rack component 2, and the bearing rack component 1 is connected to the moving rack component 2;

[0029] Among them, the main structure of the supporting frame component 1 is as follows Figure 3 As shown, it includes a bearing cover plate 11, an end bearing mounting frame 12, a middle bearing mounting frame 13, a guide rail 14, a plug guide column 15 and a slide groove 16;

[0030] End bearing mounting frames 12 are arranged at both ends of the bearing cover plate 11, a middle bearing mounting frame 13 is arranged in the middle, two guide rails 14 are arranged at the lower edge, and plug guide columns 15 are arranged on the end bearing mounting frames 12 and the middle bearing mounting frame 13. The two end bearing mounting frames 12 are mirror-symmetrical, and an L-shaped slide groove 16 is opened on the middle bearing mounting frame 13. The two guide rails 14 are mirror-symmetrical about the middle bearing mounting frame 13.

[0031] The main structure of the motion rack component 2 is as follows Figure 4 As shown, it includes a sliding guide post 21, an end plug-in hanger 22, a middle plug-in hanger 23, a lead screw 24, a door leaf bearing assembly 25, a synchronous belt 26, a nut 27 and a follower pulley 28;

[0032] The two ends of the sliding guide column 21 are provided with end plug hangers 22, and the middle is provided with a middle plug hanger 23. The lead screw 24 is passed through the middle plug hanger 23, and the two ends are fixed on the end plug hanger 22. The sliding guide column 21 is also provided with two door leaf bearing assemblies 25. The middle plug hanger 23 is connected to the lead screw 24 through a synchronous belt 26. The two door leaf bearing assemblies 25 are mirror-symmetrical about the middle plug hanger 23. Two nuts 27 and a driven pulley 28 are provided in the middle of the lead screw 24, and the nuts 27 are located on both sides of the driven pulley 28.

[0033] Furthermore, the main structure of the middle Sierra hanger 23 is as follows Figure 5 As shown, it includes a rack seat 230, a driving motor 231, a rotating frame 232, a driving gear 233, a roller assembly 234, a torsion spring 235, a driven gear 236, a driving synchronous pulley 237, a pin 238 and a pin shaft 239; the rack seat 230 is provided with a driving motor 231 and a rotating frame 232, the driving motor 231 is connected with the rotating frame 232 and the driving gear 233, one end of the rotating frame 232 is provided with a roller assembly 234, and the other end is embedded with a torsion spring 235, the driving gear 233 is meshed with the driven gear 236, and the driven gear 236 is connected with the driving synchronous pulley 237 through a pin 238 and then installed on the pin shaft 239;

[0034] The main structure of the door leaf bearing assembly 25 is as follows Figure 4 As shown, it includes a connecting seat 251, a nut connecting block 252, a door leaf connecting plate 253 and a guide roller 254; a nut connecting block 252 is provided on one side of the connecting seat 251, a door leaf connecting plate 253 is provided on the other side, and a guide roller 254 is provided on the top.

[0035] The connection mode between the bearing frame component 1 and the motion frame component 2 involved in this embodiment is:

[0036] The end plug hanger 22 and the middle plug hanger 23 are mounted on the corresponding plug guide posts 15;

[0037] The roller assembly 234 is embedded in the slide groove 16;

[0038] The guide roller 254 is embedded in the guide rail 14 .

[0039] In addition, the door leaf bearing assembly 25 is sleeved on the sliding guide column 21 through the door leaf connecting seat assembly 251, moves along the sliding guide column 21, and is connected to the lead screw 24 through the nesting of the nut connecting block 252 and the nut 27;

[0040] The driving pulley 237 is connected to the driven pulley 28 via the synchronous belt 26 .

[0041] The inserted locking state of the door system drive mechanism involved in this embodiment is as follows Figure 6 As shown;

[0042] Plug out the unlocked state Figure 7 As shown;

[0043] Locking principle Figure 8 As shown, the rotation center of the roller assembly 234 is lower than the horizontal line where the rotation center of the rotating frame 232 is located, and the torsion spring 235 provides a holding force to maintain it in a locked state;

[0044] The process of inserting movement is as follows Fig. 9 As shown, the driving motor 231 rotates counterclockwise, and drives the lead screw 24 to rotate through the driving gear 233, the driven gear 236, the driving pulley 237 and the driven pulley 28. The lead screw 24 drives the two groups of door leaf bearing assemblies 25 to slide relative to each other through the nut 27 and the nut connecting block 252. The guide roller 254 slides along the guide rail 14. At the same time, the end plug-in hanger 22 and the middle plug-in hanger 23 slide along the plug-in guide column 15, and the roller assembly 234 slides along the slide groove 16. After being inserted into place, the roller assembly 234 falls into the groove at the tail of the slide groove 16 driven by the rotating frame 232 to be locked. The torsion spring 235 provides locking retention force to achieve insertion locking.

[0045] The trajectory of the plug-out movement is opposite to that of the plug-in movement. The process of the plug-out movement is as follows: Fig.10As shown, the driving motor 231 rotates clockwise, driving the roller assembly 234 to rotate clockwise through the rotating frame 232, and the roller assembly 234 slides out of the groove at the tail of the slide slot 16 to achieve plug-out unlocking;

[0046] The driving motor 231 continues to rotate clockwise, driving the lead screw 24 to rotate through the driving gear 233, the driven gear 236, the driving pulley 237 and the driven pulley 28. The lead screw 24 drives the two sets of door leaf bearing assemblies 25 to slide relative to each other through the nut 27 and the nut connecting block 252. The guide roller 254 slides along the guide rail 14. At the same time, the roller assembly 234 slides along the slide groove 16 to realize the door opening action.

Claims

1. A door system driving mechanism, characterized in that: The main structure includes a moving frame; the main structure of the moving frame includes a sliding guide column and an end plug hanger, a middle plug hanger, and a door leaf bearing assembly arranged thereon, and a lead screw passing through the middle plug hanger; the main structure of the middle plug hanger includes a driving motor and a rotating frame and a driving gear connected thereto, a roller assembly and a torsion spring arranged on the rotating frame, a driven gear meshing with the driving gear, and a driving synchronous pulley connected to the driven gear. When locked, the rotation center of the roller assembly is lower than the horizontal line where the rotation center of the rotating frame is located, and the holding force provided by the torsion spring locks the locked state.

2. The door system drive mechanism according to claim 1, characterized in that: The main structure also includes a bearing frame component, and the moving frame component is arranged on the bearing frame component.

3. The door system drive mechanism according to claim 2, characterized in that: The main structure of the bearing frame comprises an end bearing mounting frame, a middle bearing mounting frame and a guide rail, and a slide groove provided on the middle bearing mounting frame.

4. The door system drive mechanism according to claim 3, characterized in that: The main structure of the door leaf bearing assembly includes a connecting seat and a nut connecting block arranged thereon, a door leaf connecting plate and a guide roller. The door leaf connecting seat assembly is sleeved on the sliding guide column for movement, the nut connecting block is nested in the nut arranged on the lead screw, and the guide roller is embedded in the guide rail.

5. The door system driving mechanism according to claim 4, characterized in that: The end bearing mounting frame, the middle bearing mounting frame and the guide rails are all arranged on the bearing cover plate; the end bearing mounting frame and the middle bearing mounting frame are both provided with plug guide columns to facilitate the installation of the end plug hanger and the middle plug hanger; the lead screw is passed through the middle plug hanger, and the driven pulley arranged thereon is connected to the driving synchronous pulley through a synchronous belt; the driving motor and the rotating frame are arranged on the hanger seat, and the driven gear is connected to the driving synchronous pulley through a pin and then installed on the pin shaft.

6. The door system driving mechanism according to claim 5, characterized in that: The locking principle is: after being inserted into place, the roller assembly falls into the groove at the tail of the slide and is locked.

7. A plug door, characterized in that: The invention comprises the door system driving mechanism according to any one of claims 1 to 6.

8. A rail vehicle, characterized in that: It includes the door system driving mechanism described in claims 1-7 or the plug sliding door described in claim 7.

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