Passive unlocking structure for door system

Abstract

The present invention discloses a passive unlocking structure for a door system, comprising: a driving motor assembly connected to a supporting base plate; a camshaft connected to the driving motor assembly; a lead screw connected to the supporting base plate, one end of which is connected to the camshaft, the camshaft is driven to rotate by the driving motor assembly, and is linked to the lead screw to rotate, the lead screw links two door bodies to open or close at the same time; and a lock assembly connected to the supporting base plate, used with the camshaft to unlock or lock the door body, thereby overcoming the technical problems of relatively complex structure, instability during operation, and relatively low reliability.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit door systems, in particular to a passive unlocking structure of a door system. Background Art

[0002] Door systems are widely used in urban rail vehicles, trams, buses, etc. Among them, the locking structure is an important component of the door system. The traditional locking structure is relatively complex, with many parts, unstable during operation, and requires additional electrical components other than motors for locking and unlocking. Once a fault occurs during the operation of the vehicle, the door usually cannot be locked normally due to its complex control structure. Summary of the invention

[0003] In view of the above-mentioned deficiencies existing in the related art, an object is to provide a passive unlocking structure for a door system to solve the technical problems in the related art that the structure is relatively complex, the operation is unstable, and the reliability is relatively low.

[0004] The technical solution to achieve the purpose is: a passive unlocking structure for a door system, comprising:

[0005] A drive motor assembly connected to the support base plate;

[0006] a camshaft connected to the drive motor assembly;

[0007] A lead screw is connected to the support base plate, one end of which is connected to the camshaft, the camshaft is driven to rotate by the drive motor assembly, and the lead screw is linked to rotate, and the lead screw is linked to the two door bodies to open or close simultaneously;

[0008] and a lock assembly connected to the support base plate and used with the cam shaft to unlock or lock the door body;

[0009] When the door body is opened, the drive motor assembly drives the camshaft to rotate 60° of idle stroke, the camshaft triggers the lock assembly to operate, the door body is unlocked, the camshaft continues to rotate, and the lead screw is linked to rotate, and the door body is opened;

[0010] When the door body is closed, the driving motor assembly drives the cam shaft to rotate, and the cam shaft is linked to the lead screw to rotate. After the door body is fully closed, the lock assembly is locked.

[0011] Further: the driving motor assembly includes: a motor connected to the supporting base plate; and a coupling for connecting the motor and the camshaft.

[0012] Further: the camshaft comprises: a stepped shaft, one end of which is connected to the drive motor assembly, and the other end of which is plugged into the screw rod;

[0013] Two first protrusions are connected to the outer circle of the stepped shaft at intervals and are used to intersect with the two second protrusions on the screw rod. After rotating 60°, the first protrusions move the second protrusions, so that the camshaft is linked to the screw rod to rotate;

[0014] And a flange is connected to the middle part of the stepped shaft and is used to link the lock assembly.

[0015] Furthermore: the screw rod is connected to the supporting base plate through two bearing seats.

[0016] Further: the lock assembly includes: a first lock hook connected to the top of one of the door bodies;

[0017] A seat body connected to the supporting base plate, the upper surface of the seat body having a stepped groove, the middle part having a stepped through hole, and the side wall having a first through groove, the stepped through hole being connected to the stepped groove, the first through groove dividing the stepped through hole, and the stepped groove matching the shape of the camshaft with clearance fit;

[0018] A push rod is arranged at the stepped through hole, with two ends protruding outside the stepped through hole, and the push rod is contacted and pushed by the camshaft to move up and down along the stepped through hole;

[0019] A spring, arranged at the stepped through hole and sleeved on the push rod;

[0020] A pressure plate connected to the bottom of the seat body to limit the spring, and the pressure plate is penetrated by the lower end of the push rod;

[0021] a second locking hook, connected to the lower end of the push rod, disposed outside the seat body, and used to hook with the first locking hook to limit the first locking hook;

[0022] a limiting card plate, plugged into the first through slot, one end of which is against the first locking hook, the limiting card plate can slide along the first through slot, and a second through slot is provided in the middle of the limiting card plate, the second through slot is passed through by the ejector rod, and is used together with the ejector rod to limit the ejector rod;

[0023] And an elastic sheet is connected between the other end of the limit clamping plate and the bottom of the seat body, and is used for linking the limit clamping plate.

[0024] The above technical scheme has the following beneficial effects: a passive unlocking structure of a door system, compared with the related technology, is provided with a driving motor assembly; a camshaft is connected to the driving motor assembly; a lead screw is connected to the camshaft, and two door bodies are connected to the lead screw; a lock assembly is provided, which is used with the camshaft to unlock or lock the door body; the camshaft is driven by the driving motor assembly to rotate 60° of idle stroke, the camshaft triggers the lock assembly to operate, the door body is unlocked, the camshaft continues to rotate, the linked lead screw rotates, and the door body is opened; the camshaft is then driven by the driving motor assembly to rotate, the camshaft links the lead screw to rotate, and after the door body is closed in place, the lock assembly is locked; the structure is relatively simple, the door body is opened or closed smoothly, and the operation stability and reliability are relatively good; thereby overcoming the technical problems of relatively complex structure, instability during operation, and relatively low reliability, and achieving the technical effect of relatively simple structure and relatively good stability, which is conducive to popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional assembly structure in actual use;

[0026] Figure 2 A three-dimensional schematic diagram of the drive motor assembly, camshaft, lead screw and lock assembly;

[0027] Figure 3 A partial cross-sectional view of a drive motor assembly, a camshaft, a lead screw and a lock assembly;

[0028] Figure 4 Exploded view of the drive motor assembly, camshaft, lead screw and lock assembly;

[0029] Figure 5 It is a schematic diagram of the three-dimensional structure of the camshaft;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the seat body on the lock assembly;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the limit clamping plate and the elastic sheet on the lock assembly;

[0032] In the figure: 10. drive motor assembly, 11. motor, 12. coupling, 20. camshaft, 21. stepped shaft, 22. first protrusion, 23. flange, 30. screw, 31. second protrusion, 40. lock assembly, 41. first lock hook, 42. seat body, 421. stepped groove, 422. stepped through hole, 423. first through groove, 43. push rod, 44. spring, 45. pressure plate, 46. second lock hook, 47. limit card plate, 471. second through groove, 48. elastic sheet, 50. bearing seat, 100. support bottom plate, 200. door body. DETAILED DESCRIPTION

[0033] In order to make the content easier to understand, the following is a further detailed description based on specific embodiments and in conjunction with the accompanying drawings;

[0034] A passive unlocking structure for a door system solves the technical problems of relatively complex structure, instability during operation and relatively low reliability in related technologies, and achieves the positive effect of relatively simple structure and relatively good stability. The overall idea is as follows:

[0035] One implementation method:

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown; a door system passive unlocking structure, comprising:

[0037] A driving motor assembly 10 connected to the supporting base plate 100;

[0038] a camshaft 20 connected to the drive motor assembly 10;

[0039] A threaded rod 30 is connected to the support base plate 100, one end of which is connected to the camshaft 20. The camshaft 20 is driven to rotate by the drive motor assembly 10 and is linked to the threaded rod 30 to rotate. The threaded rod 30 is linked to the two door bodies 200 to open or close at the same time.

[0040] and a lock assembly 40 connected to the support base plate 100 and used with the cam shaft 20 to unlock or lock the door body 200;

[0041] When the door body 200 is opened, the driving motor assembly 10 drives the camshaft 20 to rotate 60° of idle travel, the camshaft 20 triggers the lock assembly 40 to operate, the door body 200 is unlocked, the camshaft 20 continues to rotate, and the lead screw 30 is linked to rotate, and the door body 200 is opened;

[0042] When the door body 200 is closed, the driving motor assembly 10 drives the cam shaft 20 to rotate, and the cam shaft 20 is linked to the screw rod 30 to rotate. After the door body 200 is fully closed, the lock assembly 40 is locked;

[0043] Specifically, during implementation, a driving motor assembly 10 is provided; a camshaft 20 is connected to the driving motor assembly 10; a screw rod 30 is connected to the camshaft 20, and two door bodies 200 are connected to the screw rod 30; a lock assembly 40 is provided, which is used with the camshaft 20 to unlock or lock the door body 200; the camshaft 20 is driven by the driving motor assembly 10 to rotate 60° of idle stroke, the camshaft 20 triggers the lock assembly 40 to act, the door body 200 is unlocked, the camshaft 20 continues to rotate, the linkage screw rod 30 rotates, and the door body 200 is opened; the camshaft 20 is driven by the driving motor assembly 10 to rotate, the camshaft 20 is linked to the screw rod 30 to rotate, and after the door body 200 is closed in place, the lock assembly 40 is locked; the structure is relatively simple, the door body 200 is opened or closed smoothly, and the stability and reliability of operation are relatively good;

[0044] Another embodiment:

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown; when implemented, the driving motor assembly 10 includes: a motor 11, connected to the supporting base plate 100; and a coupling 12, used to connect the motor 11 and the camshaft 20; the motor 11 adopts a common structure in the prior art, such as a common vertical motor, a vertical reduction motor, etc., and is connected to the supporting base plate 100 through a profile to generate a driving force; the coupling 12 adopts a common structure in the prior art, such as a clamping bellows coupling, etc., which is convenient for connecting the motor 11 and the camshaft 20;

[0046] Another embodiment:

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown; when implemented, the camshaft 20 includes: a stepped shaft 21, one end of which is connected to the drive motor assembly 10, and the other end is plugged into the screw rod 30; two first protrusions 22 are connected to the outer circle of the stepped shaft 21 at intervals, and are used to cross with the two second protrusions 31 on the screw rod 30. After rotating 60°, the first protrusion 22 moves the second protrusion 31, so that the camshaft 20 is linked to the screw rod 30 for rotation; and a flange 23, which is connected to the middle part of the stepped shaft 21 and is used to link the lock assembly 40; the camshaft 20 is machined by a forging blank machine, and is driven by the drive motor assembly 10 to rotate 60° of idle stroke, the purpose of which is to unlock the lock assembly 40, so that the door body 200 is unlocked, which is convenient for the door body 200 to open;

[0048] The outer edge of the flange 23 is in an arc shape, and can contact with the push rod 43, so as to push the push rod 43 without damaging the push rod 43;

[0049] Another embodiment:

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown; during implementation, the screw rod 30 is connected to the support base plate 100 through two bearing seats 50; the screw rod 30 is machined by forging blanks; one end of the screw rod 30 has a blind hole and two second protrusions 31, which is convenient for plugging with the camshaft 20; the outer circle of the screw rod 30 has double threads, half of which are positive threads and the other half are negative threads, which is convenient for the door body 200 to be opened or closed at the same time;

[0051] The bearing seat 50 may adopt a common structure in the prior art, such as an SN-type split bearing seat, so that the installation and disassembly of the screw rod 30 is more convenient;

[0052] Another embodiment:

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7As shown; when implemented, the lock assembly 40 includes: a first lock hook 41, connected to the top of one of the door bodies 200; a seat body 42, connected to the supporting base plate 100, the upper surface of the seat body 42 has a stepped groove 421, the middle part has a stepped through hole 422, and the side wall has a first through groove 423, the stepped through hole 422 is connected to the stepped groove 421, the first through groove 423 divides the stepped through hole 422, and the stepped groove 421 matches the shape of the camshaft 20 and is clearance-matched; a push rod 43, arranged at the stepped through hole 422, both ends protrude from the outside of the stepped through hole 422, and the push rod 43 is contacted and pushed by the camshaft 20 to move up and down along the stepped through hole 422; a spring 44, arranged at the stepped through hole 422, sleeved in the The push rod 43 is on the top rod; a pressure plate 45 is connected to the bottom of the seat body 42 to limit the spring 44, and the pressure plate 45 is penetrated by the lower end of the push rod 43; a second locking hook 46 is connected to the lower end of the push rod 43 and is arranged on the outside of the seat body 42, and is used to hook with the first locking hook 41 to limit the first locking hook 41; a limiting card plate 47 is plugged into the first through groove 423, one end of which abuts against the first locking hook 41, and the limiting card plate 47 can slide along the first through groove 423, and the middle part of the limiting card plate 47 has a second through groove 471, and the second through groove 471 is penetrated by the push rod 43, and is matched with the push rod 43 to limit the push rod 43; and an elastic sheet 48 is connected between the other end of the limiting card plate 47 and the bottom of the seat body 42, and is used to link the limiting card plate 47;

[0054] The first lock hook 41 is machined from forged blanks; the lower end of the first lock hook 41 has a flat surface for connecting with the top of the door body 200 by inserting an external hexagonal bolt, which is convenient for installation and disassembly; the upper end of the first lock hook 41 has a first hooking portion, which is roughly an "L"-shaped structure, which is conducive to hooking with the second lock hook 46;

[0055] The seat body 42 is roughly in the shape of a square structure, and one side wall is connected to the support base plate 100 through a profile; the stepped groove 421 matches the shape of the camshaft 20 after rotation, and has a clearance fit, which will not affect the normal rotation of the camshaft 20; the first through groove 423 is a rectangular parallelepiped structure, and has a clearance fit with the limiting card plate 47, and the limiting card plate 47 can slide along the first through groove 423;

[0056] The push rod 43 is a stepped shaft, which is machined from a section of round steel, and has a clearance fit with the stepped through hole 422, and is limited by the stepped through hole 422;

[0057] The spring 44 is a cylindrical spring in the prior art, which is used to form elastic force, which is conducive to the return of the push rod 43;

[0058] The pressure plate 45 is machined from a circular plate, and is connected to the seat body 42 by screws, and together with the ejector rod 43, limits the spring 44, and the spring 44 is in a slightly compressed state, which is conducive to generating elastic force;

[0059] The second lock hook 46 is machined from a forged blank; one end of the second lock hook 46 is screwed to the top rod 43, and the other end has a second hooking portion, which is hooked with the first hooking portion on the first lock hook 41 to lock the door body 200;

[0060] The shape of the limiting card plate 47 is roughly a "T"-shaped plate structure; the second through groove 471 matches the partial shape of the push rod 43; the lower surface of the limiting card plate 47 contacts the partial upper surface of the push rod 43, and after the second through groove 471 is engaged with the push rod 43, the limiting card plate 47 can limit the push rod 43 to prevent the spring 44 from rebounding, and the partial upper surface of the push rod 43 is an inclined surface 431, which is gradually inclined downward from the center to the periphery. The inclined surface 431 is conducive to the second through groove 471 on the limiting card plate 47 being engaged with the push rod 43, so that the push rod 43 is separated from the camshaft 20, and it is also conducive to the subsequent limiting card plate 47 and the push rod 43 Disengagement, the coordination action is relatively smooth;

[0061] The elastic sheet 48 is made of stainless steel sheet by stamping and bending, and has a roughly "7"-shaped cross section. One end is connected to the limit clamping plate 47 through a third through slot and then welded, and the other end is connected to the bottom of the seat body 42 by a screw.

[0062] When in use, the camshaft 20 rotates, the flange 23 pushes the push rod 43, the push rod 43 moves downward along the stepped through hole 422, the spring 44 is compressed, the second lock hook 46 moves downward and disengages from the first lock hook 41, the first lock hook 41 moves with the door body 200, away from the second lock hook 46, the first lock hook 41 is separated from the limiting card plate 47, the elastic force of the elastic sheet 48 makes the limiting card plate 47 slide along the first through groove 423, the second through groove 471 clamps the push rod 43, the push rod 43 is limited, the second lock hook 46 is limited, and the door body 200 is opened smoothly; when closing the door body 200, the driving motor assembly 10 drives the cam shaft 20 to rotate, the cam shaft 20 is linked with the screw rod 30 to rotate, the door body 200 and the first lock hook 41 move, the first lock hook 41 contacts the limiting card plate 47, and pushes the limiting card plate 47 to slide along the first through groove 423, the second through groove 471 disengages the push rod 43, the push rod 43 returns to its original position under the action of the rebound force of the spring 44, the push rod 43 links with the second lock hook 46 to return, the second lock hook 46 is hooked with the first lock hook 41, and the door body 200 is closed in place;

[0063] Another embodiment:

[0064] like Figure 1As shown; the support base plate 100 and the door body 200 are common structures in the prior art, which are not the inventive point of the present invention, but are only for better describing the present invention and facilitating understanding of the technical solution of the present invention; the support base plate 100 is conducive to supporting the driving motor assembly 10, the screw rod 30 and the lock assembly 40; the bottom of the door body 200 is connected with a track, and the top is provided with a screw nut, which is used for threaded connection with the screw rod 30, which is conducive to the screw rod 30 to link the door body 200 to move; after seeing the disclosed content, ordinary technicians in this field can directly and unambiguously know how to set it without paying creative labor or excessive experiments;

[0065] The working principle is as follows: when the door body 200 is opened, the driving motor assembly 10 drives the camshaft 20 to rotate 60° of idle travel, the camshaft 20 triggers the lock assembly 40 to operate, the door body 200 is unlocked, the camshaft 20 continues to rotate, the linkage screw rod 30 rotates, and the door body 200 is opened;

[0066] When the door body 200 is closed, the driving motor assembly 10 drives the cam shaft 20 to rotate, and the cam shaft 20 drives the lead screw 30 to rotate, and after the door body 200 is fully closed, the lock assembly 40 is locked;

[0067] In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicating directions or positional relationships are based on the positional relationships described in the drawings and are only for the convenience of description or simplified description, rather than indicating specific directions that must be possessed; the operation process described in the embodiments is not an absolute usage procedure and may be adjusted accordingly in actual use;

[0068] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the relevant field; the words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not necessarily indicate a quantity limitation, but indicate the existence of at least one, which needs to be determined according to the content of the embodiment;

[0069] The above is only a preferred specific implementation method, but the scope of protection is not limited to it. Any equivalent replacement or change made according to the technical solution and its inventive concept within the technical scope disclosed by any technician familiar with this technical field should be covered by the scope of protection.

Claims

1. A passive unlocking structure for a door system, characterized in that: include: A driving motor assembly (10) connected to the supporting base plate (100); a camshaft (20) connected to the drive motor assembly (10); A threaded rod (30) is connected to the supporting base plate (100), one end of which is connected to the camshaft (20); the camshaft (20) is driven to rotate by the driving motor assembly (10) and is linked to the threaded rod (30) for rotation; the threaded rod (30) is linked to the two door bodies (200) for simultaneous opening or closing; and a lock assembly (40), connected to the supporting base plate (100) and used with the cam shaft (20) to unlock or lock the door body (200); When the door body (200) is opened, the drive motor assembly (10) drives the camshaft (20) to rotate a 60° idle stroke, the camshaft (20) triggers the lock assembly (40) to operate, the door body (200) is unlocked, the camshaft (20) continues to rotate, and the lead screw (30) is linked to rotate, and the door body (200) is opened; When the door body (200) is closed, the driving motor assembly (10) drives the cam shaft (20) to rotate, and the cam shaft (20) drives the screw rod (30) to rotate in conjunction with the rotation of the door body (200). After the door body (200) is fully closed, the lock assembly (40) is locked; The driving motor assembly (10) comprises: a motor (11) connected to the supporting base plate (100); and a coupling (12) for connecting the motor (11) and the camshaft (20); The camshaft (20) comprises: a stepped shaft (21), one end of which is connected to the drive motor assembly (10) and the other end of which is plugged into the lead screw (30); two first protrusions (22) connected at intervals on the outer circle of the stepped shaft (21) and used to intersect with two second protrusions (31) on the lead screw (30); after rotating 60°, the first protrusions (22) move the second protrusions (31), so that the camshaft (20) and the lead screw (30) rotate in conjunction; and a flange (23) connected to the middle part of the stepped shaft (21) and used to link the lock assembly (40); The lock assembly (40) comprises: a first lock hook (41) connected to the top of one of the door bodies (200); a seat body (42) connected to the supporting base plate (100); the seat body (42) having a stepped groove (421) on its upper surface, a stepped through hole (422) in the middle, and a first through groove (423) on its side wall, the stepped through hole (422) being connected to the stepped groove (421), and the first through groove (423) dividing the stepped through hole (422) and the stepped through hole (422) The step through hole (422) is provided, and the step groove (421) matches the shape of the cam shaft (20) and is clearance-matched; a push rod (43) is provided at the step through hole (422), and both ends protrude outside the step through hole (422), and the push rod (43) is contacted and pushed by the cam shaft (20) to move up and down along the step through hole (422); a spring (44) is provided at the step through hole (422) and sleeved on the push rod (43) a pressing plate (45) connected to the bottom of the seat body (42) to limit the spring (44), the pressing plate (45) being passed through the lower end of the push rod (43); a second locking hook (46) connected to the lower end of the push rod (43) and arranged outside the seat body (42) to be hooked with the first locking hook (41) to limit the first locking hook (41); a limiting clamping plate (47) plugged into the first through groove (423), one end of which is engaged with the first locking hook (41 ) abuts against the limit card plate (47), the limit card plate (47) can slide along the first through groove (423), and the middle part of the limit card plate (47) has a second through groove (471), the second through groove (471) is passed through by the push rod (43), and is matched with the push rod (43) to limit the push rod (43); and an elastic sheet (48) is connected between the other end of the limit card plate (47) and the bottom of the seat body (42), and is used to link the limit card plate (47).

2. A door system passive unlocking structure according to claim 1, characterized in that: The screw rod (30) is connected to the supporting base plate (100) via two bearing seats (50).

Images