A vehicle door locking mechanism, a vehicle door and a railway refrigerator car

Abstract

This application discloses a door locking mechanism, a door, and a railway refrigerated car, belonging to the field of railway vehicle technology. The door locking mechanism is connected between the door body and the door frame and includes: a first locking assembly connected between the door body and the door frame; a drive mechanism connected to the first locking assembly to drive the first locking assembly to perform locking or unlocking operations; a second locking assembly connected between the door body and the door frame; and a transmission assembly connected between the drive mechanism and the second locking assembly to simultaneously drive the second locking assembly to perform locking or unlocking operations when the drive mechanism drives the first locking assembly to perform locking or unlocking operations. The door locking mechanism, door, and railway refrigerated car provided by this application can improve the reliability and stability of door locking.

Description

Technical Field

[0001] This application belongs to the field of railway vehicle technology, and in particular relates to a door locking mechanism, a door, and a railway insulated car. Background Technology

[0002] To maintain the stability of thermal insulation performance, railway insulated vehicles have high requirements for the sealing and thermal insulation of the doors. Sliding embedded doors are usually used, which press the door body tightly against the door frame. The sealing and thermal insulation performance of the door area is maintained by the compression deformation of the sealing strip between the door and the door frame.

[0003] Because the door needs to be opened and closed frequently, a stable and reliable locking structure is required between the door and the door frame to ensure the reliability of both the opening and locking functions. Typically, a locking cam is installed on a locking rod rotatably mounted on the door, and a locking seat that cooperates with the locking cam is installed on the door frame. When the door is inserted into the door frame, the locking rod is driven to rotate, causing the locking cam to engage with the locking seat, thus locking the door to the door frame. The locking rods can be symmetrically arranged on both sides of the door, with each locking rod having a locking cam in its upper and lower sections. By driving the locking rods to rotate, multiple locking cams can be simultaneously locked, which is convenient and quick.

[0004] However, as the usage time increases, the locking cams may become unreliable in locking into place, or their timing may be inconsistent. This can result in some locking cams being engaged with the locking base while others are not yet in place, causing one or more parts of the door to fail to lock onto the door frame, which can easily lead to a safety accident of the door coming loose. Summary of the Invention

[0005] This application provides a door locking mechanism, a door, and a railway insulated car, aiming to at least partially solve the technical problem of unsatisfactory locking reliability and stability of sliding embedded doors in railway vehicles. Therefore,

[0006] A first aspect of this application provides a door locking mechanism connected between a door body and a door frame; comprising:

[0007] A first locking assembly is connected between the door body and the door frame;

[0008] A drive mechanism is connected to the first locking component to drive the first locking component to perform locking or unlocking operations;

[0009] A second locking assembly is connected between the door body and the door frame;

[0010] A transmission component is connected between the drive mechanism and the second locking component so that when the drive mechanism drives the first locking component to perform a locking or unlocking operation, it drives the second locking component to perform a locking or unlocking operation synchronously.

[0011] In some embodiments, the first locking component includes:

[0012] A first locking seat is provided on the door frame;

[0013] A first locking cam is rotatably connected to the door body;

[0014] The first link is movably mounted on the door body and connected to the first locking cam;

[0015] A first lever is rotatably connected to the door body, and both ends of the first lever are respectively connected to the drive mechanism and the first connecting rod. Under the drive of the drive mechanism, the first connecting rod is deflected and pushed to move, so as to drive the first locking cam to deflect and engage or disengage from the first locking seat.

[0016] In some embodiments, the second locking component includes:

[0017] A second locking seat is provided on the door frame;

[0018] The second locking cam is rotatably connected to the door body;

[0019] The second link is movably mounted on the door body and connected to the second locking cam;

[0020] The second lever is rotatably connected to the door body, and both ends of the second lever are respectively connected to the transmission assembly and the second connecting rod. Under the drive of the drive mechanism, the second connecting rod is deflected and pushed to move, so as to drive the second locking cam to deflect and engage or disengage from the second locking seat.

[0021] In some embodiments, the first locking assembly further includes a first support base and a first locking rod, the first support base being disposed on the door body, the first locking rod being rotatably disposed on the first support base, and the first locking cam being connected to the first locking rod;

[0022] The second locking assembly further includes a second support base and a second locking rod. The second support base is disposed on the door body, and the second locking rod is rotatably disposed on the second support base, with the second locking cam connected to the second locking rod.

[0023] In some embodiments, the drive mechanism includes:

[0024] A slider is movably mounted on the door body, and the slider is connected to the first lever;

[0025] A spindle is rotatably mounted on the door body and screwed into the slider. During the rotation of the spindle, the slider is driven to move along the axial direction of the spindle to push and pull the first lever to deflect. At the same time, the spindle drives the second lever to deflect through the transmission assembly to push and pull the second lever to deflect synchronously.

[0026] In some embodiments, the transmission assembly includes:

[0027] The drive gear is sleeved on the spindle;

[0028] A translational linkage is movably mounted on the door body and connected to the second lever. The translational linkage is provided with a transmission tooth that is arranged axially and meshes with the drive gear to drive the drive gear to rotate during the rotation of the spindle, thereby driving the translational linkage to move and push / pull the second lever to deflect.

[0029] In some embodiments, the transmission assembly further includes:

[0030] The driven gear meshes with the transmission gear and the drive gear;

[0031] The connector is connected to the translational connecting rod;

[0032] The movable link is movably connected at both ends to the connector and the second lever, respectively.

[0033] In some embodiments, the transmission assembly includes:

[0034] A translational linkage is movably mounted on the door body and connected to the second lever;

[0035] A transmission screw cylinder is sleeved on the translational connecting rod and screwed into the transmission teeth provided on the translational connecting rod;

[0036] A drive gear is sleeved on the spindle, and the drive gear meshes with a helical gear formed on the outer circumferential surface of the transmission screw. During the rotation of the spindle, the drive gear is driven to rotate, thereby driving the transmission screw to rotate and driving the translational connecting rod to move and push / pull the second lever to deflect.

[0037] In some embodiments, the transmission assembly further includes:

[0038] The driven gear meshes with the transmission screw and the drive gear.

[0039] In some embodiments, the transmission assembly further includes:

[0040] The connector is connected to the translational connecting rod;

[0041] The movable link is movably connected at both ends to the connector and the second lever, respectively.

[0042] In some embodiments, the second locking component may further include:

[0043] The first guide seat is connected to the door body;

[0044] A connecting rod is movably disposed within the first guide seat, and both ends of the connecting rod are respectively connected to the second locking cam and the second connecting rod.

[0045] In some embodiments, the two ends of the connecting rod are pivotally connected to the second connecting rod and the second locking cam, respectively.

[0046] In some embodiments, the number of the first locking component and the number of the second locking component are two sets, and the two sets of the first locking component and the two sets of the second locking component are respectively disposed in the four corner areas of the door body.

[0047] A second aspect of this application provides a vehicle door, including: a door frame, a door body, and the aforementioned vehicle door locking mechanism;

[0048] The door body is connected to the door frame, the first locking assembly and the second locking assembly are respectively connected between the door body and the door frame, and the transmission assembly and the drive device are disposed on the door body.

[0049] A third aspect of this application provides a railway refrigerated car, including the aforementioned car door.

[0050] The embodiments of this application have at least the following beneficial effects:

[0051] This application provides a door locking mechanism, a door, and a railway insulated car. A first locking component and a second locking component are arranged in the upper and lower regions of the sliding embedded door of the railway insulated car, respectively, to stably lock the door within the door frame. The first locking component is directly driven by a drive mechanism, and the drive mechanism indirectly drives the second locking component remotely and synchronously through a transmission component. This allows the drive mechanism to synchronously drive the first locking component and the second locking component, ensuring the reliability and stability of the operation of the locking components at different positions. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A schematic diagram of the locked state of the door locking mechanism in an embodiment of this application is shown;

[0054] Figure 2 It shows Figure 1 A first-person side view of the door locking mechanism in the vehicle.

[0055] Figure 3 It shows Figure 1 A second-view side view of the door locking mechanism in the vehicle;

[0056] Figure 4 It shows Figure 1 Enlarged view I of the locked state of the door locking mechanism in the vehicle;

[0057] Figure 5 It shows Figure 1 Enlarged view II of the locked state of the car door locking mechanism;

[0058] Figure 6 It shows Figure 1 Enlarged view III of the locked state of the door locking mechanism in the vehicle;

[0059] Figure 7 It shows Figure 1 Enlarged view IV of the locked state of the door locking mechanism in the vehicle;

[0060] Figure 8 It shows Figure 1 A magnified view V showing the locked state of the door locking mechanism in the vehicle.

[0061] Figure 9 It shows Figure 1 VI. Enlarged view of the locked state of the door locking mechanism in the vehicle;

[0062] Figure 10 It shows Figure 1 VI. Enlarged view of the locked state of the door locking mechanism in the vehicle;

[0063] Figure 11 A schematic diagram of the open state of the door locking mechanism in an embodiment of this application is shown;

[0064] Figure 12 A side view of the door locking mechanism in the open state according to an embodiment of this application is shown;

[0065] Figure 13 An enlarged view IX shows the open state of the door locking mechanism in an embodiment of this application;

[0066] Figure 14 An enlarged view of the open state of the door locking mechanism in an embodiment of this application is shown. Figure X ;

[0067] Figure 15 An enlarged view of the open state of the door locking mechanism in an embodiment of this application is shown. Figure X I;

[0068] Figure 16 A schematic diagram of the sealing state structure between the locking rod and the door pivot rod of the door locking mechanism in an embodiment of this application is shown.

[0069] Figure label:

[0070] 10-Door locking mechanism;

[0071] 100-First locking assembly, 110-First locking seat, 111-First seat body, 112-First locking pin, 120-First locking cam, 130-First connecting rod, 140-First lever, 150-First lever support, 160-First locking rod, 170-First support seat;

[0072] 200-Drive mechanism, 210-Spindle, 220-Slider, 230-Handle, 240-Drive support;

[0073] 300-Second locking assembly, 310-Second locking seat, 311-Second seat body, 312-Second locking pin, 320-Second locking cam, 330-Second connecting rod, 331-Pull rod head, 340-Second lever, 350-Second lever support, 360-Second locking rod, 370-Second support seat, 380-Connecting pull rod, 381-First movable joint, 382-Second movable joint, 390-First guide seat;

[0074] 400-Transmission assembly, 410-Drive gear, 420-Transmission link, 421-Transmission gear, 430-Driven gear, 440-Transmission barrel, 450-Connector, 460-Modible link, 470-Second guide seat;

[0075] 510-Door pivot rod, 520-Second crank, 530-First crank, 540-Sliding wheel assembly, 550-First slide rail, 560-Second slide rail; 600-Car body. Detailed Implementation

[0076] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0077] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0078] This application is described below with reference to the accompanying drawings and specific embodiments:

[0079] The sliding embedded door of a railway vehicle includes a door frame mounted on the car body and a door body that slides on a rail on the car body. Once the door body is aligned with the door frame, it can move into the door frame and be locked inside by a locking mechanism. To accommodate the large area of ​​the door body, locking mechanisms are typically installed in multiple areas of the door body, and these multiple locking mechanisms are connected in series over a long span via a transmission structure. This makes the locking mechanism susceptible to degradation of its driving function due to factors such as assembly errors, driving distance, and structural damage, resulting in unstable and unreliable locking functionality, which seriously affects the security of the door locking.

[0080] Therefore, this application provides a door locking mechanism, a door, and a railway insulated car, which aims to improve the reliability and stability of the multi-area locking function embedded in the door during sliding to a certain extent.

[0081] Figure 1 A schematic diagram of the locked state of the door locking mechanism in an embodiment of this application is shown; Figure 2 It shows Figure 1 A first-person side view of the door locking mechanism in the vehicle. Figure 3 It shows Figure 1 A second-view side view of the door locking mechanism in the vehicle; Figure 11 A schematic diagram of the open state of the door locking mechanism in an embodiment of this application is shown; Figure 12 A side view of the door locking mechanism in the open state according to an embodiment of this application is shown.

[0082] See Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12 In some embodiments, the door locking mechanism 10 is connected between the door body 21 and the door frame 22 to lock the door body 21 inside the door frame 22 after the door body 21 and the door frame 22 are aligned.

[0083] The door locking mechanism 10 includes: a first locking member 100, a drive mechanism 200, a second locking assembly 300, and a transmission assembly 400.

[0084] The first locking assembly 100 and the second locking assembly 300 are used to lock the door body 21 and the door frame 22 together, thereby locking the door. The first locking assembly 100 and the second locking assembly 300 can be respectively located on the upper and lower parts or the left and right parts of the door body 21, and both will have a certain span.

[0085] To ensure stable and reliable operation of the first locking component 100 and the second locking component 300, the drive mechanism 200 can be directly connected to the first locking component 100 to achieve direct drive, thus guaranteeing the reliability and stability of their locking and unlocking operations. Simultaneously, the second locking component 300 can be indirectly connected to the drive mechanism 200 via the transmission component 400, driving the second locking component 300 through a second drive path. This allows for independent driving of the first locking component 100 and the second locking component 300, rather than driving them in series. This ensures synchronous and independent overall driving of the first locking component 100 and the second locking component 300, achieving stable locking and unlocking in each area and guaranteeing the reliability and stability of the function.

[0086] In some embodiments, the first locking component 100 and the second locking component 300 can be respectively disposed in the upper and lower regions of the door body 21 to lock the upper and lower parts of the door body. Alternatively, the first locking component 100 and the second locking component 300 can be configured as two sets, with the two sets of first locking components 100 respectively disposed on the lower left and right sides of the door body, and the two sets of second locking components 300 respectively disposed on the upper left and right sides of the door body 21, thereby achieving locking in the four corner regions of the door body 21 to improve the reliability and stability of the locking mechanism.

[0087] In some embodiments, the number of the first locking assembly 100 and the second locking assembly 300 can be increased to expand the locking area and improve the reliability of locking to some extent. Accordingly, the number of the first locking assembly 100 and the second locking assembly 300 can be reasonably increased according to the overall specifications of the door 21, such as length and height, to avoid a situation where the number of locking points is too small over a large length range, thus affecting the stability and reliability of door locking.

[0088] Figure 7 It shows Figure 1 Enlarged view IV of the locked state of the door locking mechanism in the vehicle; Figure 10 It shows Figure 1 VI. Enlarged view of the locked state of the door locking mechanism in the vehicle.

[0089] See Figure 3 , Figure 7 and Figure 10 In some embodiments, the first locking assembly 100 may include: a first locking seat 110, a first locking cam 120, a first connecting rod 130, and a first lever 140.

[0090] The first locking seat 110 can be disposed on the door frame 22, and the first locking cam 120 can be rotatably disposed on the door body 21. The installation positions of the first locking cam 120 and the first locking seat 110 are matched so that the first locking cam 120 can be deflected and embedded in the first locking seat 110, and can be deflected in the opposite direction to disengage from the first locking seat 110, thereby locking and unlocking the door body 21 and the door frame 22.

[0091] To drive the deflection of the first locking cam 120, the first connecting rod 130 can be connected to the first locking cam 120, and the first locking cam 120 can be deflected by the first connecting rod 130. To accommodate the stable reciprocating deflection of the first locking cam 120, the movement mode of the first connecting rod 130 can be set to reciprocate along a set trajectory. Correspondingly, the first connecting rod 130 can be connected to the first lever 140, and the first lever 140 can be connected to the drive mechanism 200, so that the drive mechanism 200 drives the first lever 140 to deflect, pushes and pulls the first connecting rod 130 to move, thereby driving the first locking cam 120 to deflect into or out of the first locking seat 110, realizing the locking and unlocking of the door 210.

[0092] To ensure smooth compatibility with the movement patterns of the first locking cam 120, the first connecting rod 130, and the first lever 140, and to avoid rigid interference, the connection between the first connecting rod 130 and the first locking cam 120 and the first lever 140 can be configured as a movable connection, such as a pivot connection. This allows for smooth compatibility through relative rotation between the first connecting rod 130 and the first locking cam 120 and the first lever 140, thereby reducing interference.

[0093] In some embodiments, the first locking seat 110 may include a first seat body 111 and a first locking pin 112; the first seat body 111 may be configured as a frame-shaped structural member with an internal cavity to accommodate the first locking cam 120; the first locking pin 112 is disposed on the first seat body 111 and on the deflection trajectory of the first locking cam 120. After the first locking cam 120 deflects to a set position within the first seat body 111, it abuts against the first locking pin 112, thereby locking the first locking cam 120 and pressing and locking the door body 21 connected to the first locking cam 120 within the door frame 22.

[0094] In some embodiments, the deflection plane of the first locking cam 120 can be set to be perpendicular to the plate surface of the door body 21, so that the locking force between the first locking pin 112 and the first locking cam 120 is within the plate surface direction of the first locking cam 120, rather than in the direction that forms an angle with the plate surface of the first locking cam 120. This can significantly reduce the risk of deformation of the first locking cam 120 under stress, and ensure the structural reliability and locking stability of the first locking cam 120.

[0095] See Figure 1 , Figure 2 and Figure 7 In some embodiments, in order to maintain the stability of the rotational posture of the first locking cam 120, such that the abutting force between the first locking cam 120 and the first locking pin 112 is located within the plate surface of the first locking cam 120, the first locking assembly 100 may further include a first support seat 170 and a first locking rod 160. The first support seat 170 is fixed on the door body 21, and the first locking rod 160 is rotatably disposed within the first support seat 170. The first locking cam 120 is fixed on the first locking rod 160, thereby forming a stable deflection support structure by utilizing the cooperation relationship between the first support seat 170 and the first locking rod 160 to maintain the stability of the deflection posture of the first locking cam 120.

[0096] Correspondingly, the number of the first support base 170 can be set to two or more, thereby providing multi-point rotational support for the first locking rod 160 and ensuring the stability of its rotational posture; at the same time, the first locking rod 160 is guaranteed to be uniformly stressed under the support and limiting of multiple first support bases 170, avoiding defects such as deformation and swaying that occur with unilateral support, thereby improving the reliability of the structure and locking function of the first locking assembly 100.

[0097] See Figure 10In some embodiments, to ensure the stability of the deflection posture of the first lever 140, the first locking assembly 100 may further include a first lever support 150. The first lever support 150 is disposed on the door body 21, and the first lever 140 is rotatably connected to the first lever support 150 to achieve stable independent installation and deflection of the first lever 140. On the other hand, this also reduces the need for modification and processing of the door body 21, and to a certain extent improves the adaptability of the installation and implementation of the first locking assembly.

[0098] See Figure 1 and Figure 10 In some embodiments, the drive mechanism 200 may include a spindle 210 and a slider 220. The spindle 210 is rotatably mounted on the door body 21 and screwed into the slider 220, forming a ball screw-type drive structure. That is, the spindle 210 can only rotate in its original position, and the slider 220 can only reciprocate in the axial direction of the spindle 210. Thus, when the spindle 210 rotates, the slider 220 moves in the axial direction of the spindle 210 under the drive of the spindle 210 to realize the push-pull operation of the first lever 140.

[0099] In some embodiments, the axial direction of the spindle 210 can be set to be perpendicular to the surface of the door body 210, and the moving direction of the slider 220 is perpendicular to the surface of the door body 210. That is, the slider 220 can only move closer to or away from the door body 210 in a direction perpendicular to the door body 210. During the process of the slider 220 moving closer to or away from the door body 210, the slider 220 pushes and pulls the first lever 140 to deflect, thereby sequentially pushing and pulling the first connecting rod 130 and the first locking cam 120, causing the first locking cam 120 to deflect and engage or disengage from the first locking seat 110.

[0100] See Figure 10 In some embodiments, the drive mechanism 200 may further include a drive support 240, which can be mounted on the door body 210. The end of the spindle 210 is rotatably embedded in the drive support 240, thereby allowing the spindle 210 to rotate relative to the door body 21 in situ. Alternatively, a slide rail or groove may be provided on the drive support 240 for slidingly connecting the slider 220, and the slider 220 moves relative to the drive support 240 in a direction perpendicular to the door body 21.

[0101] Therefore, when the drive mechanism 200 is activated, the spindle 210 rotates to drive the slider 220 to move relative to the drive support 240 in a direction perpendicular to the door body 21, and simultaneously pushes and pulls the first lever 140.

[0102] In some embodiments, in order to facilitate the rotation of the spindle 210, a handle 230 can be connected to the spindle 210, so that when the door 21 is opened or closed, the handle 230 can be operated to drive the spindle 210 to rotate.

[0103] In some embodiments, the spindle 210 can also be connected to automated power equipment such as a drive motor to realize automatic door locking and unlocking operations.

[0104] In some embodiments, considering that the moving direction of the slider 220 is perpendicular to the door body 21, the deflection plane of the first lever 140 can also be set to be perpendicular to the door body 21, so as to smoothly adapt to the movement of the slider 220 and the first lever 140 and ensure the smoothness of the drive of the first locking assembly 100 and the drive mechanism 200.

[0105] Specifically, the first lever bracket 150 can be configured as a U-shaped bracket, the first lever 140 is pivotally connected to the U-shaped bracket, and the first lever 140 is placed upright on the door body 21.

[0106] In some embodiments, considering that the first lever 140 and the slider 220 have different motion patterns, in order to reduce the interference caused by rigid connection, the first lever 140 and the slider 220 can also be connected by a movable connection, such as a pivot connection, so as to adapt to each other through relative rotation and reduce the interference.

[0107] Figure 4 It shows Figure 1 Enlarged view I of the locked state of the door locking mechanism in the vehicle; Figure 8 It shows Figure 1 A magnified view V showing the locked state of the door locking mechanism in the vehicle.

[0108] See Figure 3 , Figure 4 and Figure 8 In some embodiments, the second locking assembly 300 may include: a second locking seat 310, a second locking cam 320, a second connecting rod 330, and a second lever 340.

[0109] The second locking seat 310 can be disposed on the door frame 22, and the second locking cam 320 can be rotatably disposed on the door body 21. The installation positions of the second locking cam 320 and the second locking seat 310 are matched so that the second locking cam 320 can be deflected and embedded into the second locking seat 310, and can be deflected in the opposite direction to disengage from the second locking seat 310, thereby locking and unlocking the door body 21 and the door frame 22.

[0110] To drive the deflection of the second locking cam 320, the second connecting rod 330 can be connected to the second locking cam 320, and the second connecting rod 330 pulls the second locking cam 320 to deflect. To accommodate the stable reciprocating deflection of the second locking cam 320, the movement mode of the second connecting rod 330 can be set to reciprocate along a set trajectory. Correspondingly, the second connecting rod 330 can be connected to the second lever 340, and the second lever 340 can be connected to the drive mechanism 200 through the transmission assembly 400, so that the drive mechanism 200 indirectly drives the second lever 340 to deflect from a distance, pushing and pulling the second connecting rod 430 to move, thereby driving the second locking cam 320 to deflect into or out of the second locking seat 310, realizing the locking and unlocking of the door 210.

[0111] To ensure smooth compatibility with the movement patterns of the second locking cam 320, the second connecting rod 330, and the second lever 340, and to avoid rigid interference, the connection between the second connecting rod 330 and the second locking cam 320 and the second lever 340 can be configured as a movable connection, such as a pivot connection. This allows for smooth compatibility through relative rotation between the second connecting rod 330 and the second locking cam 320 and the second lever 340, thereby reducing interference.

[0112] In some embodiments, the second locking seat 310 may include a second seat body 311 and a second locking pin 312; the second seat body 311 may be configured as a frame-shaped structural member with an internal cavity to accommodate the second locking cam 320; the second locking pin 312 is disposed on the second seat body 311 and on the deflection trajectory of the second locking cam 320. After the second locking cam 320 deflects to a set position within the second seat body 311, it can abut against the second locking pin 312, thereby locking the second locking cam 320 and pressing and locking the door body 21 connected to the second locking cam 320 within the door frame 22.

[0113] In some embodiments, the deflection plane of the second locking cam 320 can be set to be perpendicular to the plate surface of the door body 21, so that the locking force between the second locking pin 312 and the second locking cam 320 is within the plate surface direction of the second locking cam 320, rather than in the direction that forms an angle with the plate surface of the second locking cam 320. This can significantly reduce the risk of deformation of the second locking cam 320 under stress, and ensure the structural reliability and locking stability of the second locking cam 320.

[0114] See Figure 1 , Figure 2 and Figure 8 In some embodiments, in order to maintain the stability of the rotational posture of the second locking cam 320, the abutting force between the first locking cam 120 and the first and second locking pins 312 is located within the plate surface of the second locking cam 320. The second locking assembly 300 may further include a second support 370 and a second locking rod 360. The second support 370 is fixed on the door body 21, and the second locking rod 360 is rotatably disposed within the second support 370. The second locking cam 320 is fixed on the second locking rod 360. Thus, a stable deflection support structure can be formed by the cooperation between the second support 370 and the second locking rod 360 to maintain the stability of the deflection posture of the second locking cam 320.

[0115] Accordingly, the number of the second support base 370 can be set to two or more, thereby providing multi-point rotational support for the second locking rod 360 and ensuring the stability of its rotational posture; at the same time, the second locking rod 360 is guaranteed to be uniformly stressed under the support and limit of multiple second support bases 370, avoiding defects such as deformation and swaying that occur with unilateral support, thereby improving the reliability of the structure and locking function of the second locking assembly 300.

[0116] Figure 6 It shows Figure 1 Enlarged view III of the locked state of the door locking mechanism in the vehicle; Figure 13 An enlarged view IX shows the open state of the door locking mechanism in an embodiment of this application; Figure 14 An enlarged view of the open state of the door locking mechanism in an embodiment of this application is shown. Figure X .

[0117] See Figure 4 , Figure 6 , Figure 13 and Figure 14In some embodiments, to ensure the stability of the deflection posture of the second lever 340, the second locking assembly 300 may further include a second lever support 350. The second lever support 350 is disposed on the door body 21, and the second lever 340 is rotatably connected to the second lever support 350 to achieve stable independent installation and deflection action of the second lever 340. On the other hand, this also reduces the need for modification and processing of the door body 21, and to a certain extent improves the adaptability of the installation and implementation of the first locking assembly.

[0118] See Figure 8 In some embodiments, considering the large distance between the second locking assembly 300 and the driving mechanism 200, to ensure the stability of the driving posture and amplitude of the second locking cam 320, the second locking assembly 300 may further include a connecting rod 380 and a first guide seat 390. The first guide seat 390 can be mounted on the door body 310, and the connecting rod 380 is movably disposed on the first guide seat 390, allowing for stable reciprocating movement in a predetermined direction. The two ends of the connecting rod 380 are movably connected to the second locking cam 320 and the second connecting rod 330, respectively. Under the constraint of the first guide seat 390, it stably ensures the pushing and pulling direction and amplitude acting on the second locking cam 320; simultaneously, it can flexibly adapt to the action error or assembly error of the second connecting rod 330, ensuring stable and reliable driving of the second locking cam 320.

[0119] In some embodiments, the connection between the connecting rod 380 and the second locking cam 320 and the second connecting rod 330 can be configured as a pivot connection. Specifically, the connecting rod 380 can be pivotally connected to the second connecting rod 330 through a first movable joint 381 provided at one end of the connecting rod 380, and pivotally connected to the second locking cam 320 through a second movable joint 382 provided at the other end of the connecting rod 380.

[0120] In some embodiments, the end of the second link 340 may also be provided with a pull rod head 331 that is pivotally connected to the second lever 340.

[0121] Figure 5 It shows Figure 1 Enlarged view II of the locked state of the car door locking mechanism; Figure 9 It shows Figure 1 VI. Enlarged view of the locked state of the door locking mechanism in the vehicle; Figure 15 An enlarged view of the open state of the door locking mechanism in an embodiment of this application is shown. Figure X I.

[0122] See Figure 2 , Figure 5 , Figure 6 , Figure 9 and Figure 15 In some embodiments, in order to achieve remote indirect driving between the drive mechanism 200 and the second locking assembly 300, the transmission assembly 400 may include a drive gear 410 and a translational connecting rod 420. The drive gear 410 is sleeved on the spindle 210 and can rotate with the spindle 210. The translational connecting rod 420 is movably disposed on the door body 21 and connected to the second lever 340. The translational connecting rod 420 is provided with a transmission tooth 421 arranged along the axial direction of the translational connecting rod 420. The transmission tooth 421 can directly mesh with the drive gear 410. During the process of the drive gear 410 rotating with the spindle 210, the drive gear 410 drives the translational connecting rod 420 to move along its axial direction, so as to push and pull the second lever 340 to deflect.

[0123] Because of the meshing transmission of the translational connecting rod 420 and the drive gear 410, the drive mechanism 200 can remotely and synchronously drive the second locking component 300 when driving the first locking component 100. This allows the first locking component 100 and the second locking component 300 to be driven independently through a single drive mechanism, ensuring multi-point and multi-position synchronous locking and unlocking of the door body 21 and improving the reliability of the door locking mechanism.

[0124] In some embodiments, in order to adapt to different motion forms of the translational link 420 and the second lever 340, the transmission assembly 400 may further include a connector 450 and a movable link 460. The connector 450 is disposed on the translational link 420. One end of the connector 450 is movably connected to the movable link 460, such as by pivoting, and the other end is movably connected to the second lever 340, such as by pivoting. Thus, the large mobility of the movable link 460 ensures the stable connection and transmission between the translational link 420 and the second lever 340, and can adapt to assembly errors.

[0125] In some embodiments, in order to ensure the stability of the direction of the translational linkage 420 and reduce the swing amplitude, the transmission assembly 400 may further include a second guide seat 470. The second guide seat 470 may be mounted on the door body 21, and the translational linkage 420 may be slidably connected to the second guide seat 470 along its axial direction. Thus, when the drive gear 410 drives the translational linkage 420 to move, the second lever 340 is pushed and pulled stably to achieve a stable and reliable drive of the second locking assembly 300.

[0126] In some embodiments, the transmission assembly 400 may further include a transmission screw 440, which has threads on both its inner and outer walls. When the transmission screw 440 is sleeved on the translational connecting rod 420, the transmission screw 440 is screwed to the transmission gear 421, and the external thread of the transmission screw 440 is also screwed. Thus, when the drive gear 410 rotates, the transmission screw 440 rotates along with it and applies a force to the transmission gear 421. The translational connecting rod 420 cannot rotate, so it can only move axially to push and pull the second lever 340.

[0127] In some embodiments, in order to coordinate and avoid the surrounding structure of the book search drive gear 410, the transmission assembly 400 may further include a driven gear 430 that meshes with the drive gear 410 and with the transmission screw 440 or the transmission gear 421, so as to avoid arranging too many structural components in a small area and increasing the risk of interference.

[0128] See Figure 1 , Figure 2 , Figure 3 , Figure 11 and Figure 12 In some embodiments, a door equipped with the aforementioned door locking mechanism 10 is also provided, including a door body 21, a door frame 22, and the door locking mechanism 10.

[0129] The door body 21 is adapted to the door frame 22 and can move into the door frame 22 to achieve smooth and stable operation of the first locking component 100 and the second locking component 300.

[0130] In some embodiments, a first slide rail 550 and a second slide rail 560 may be provided in the lower and upper regions of the door frame 22, respectively, to support the sliding of the door body 21, so as to realize the movement of the door body 21 to open and lock the door.

[0131] In some embodiments, in order to achieve stable sliding of the door body 21, a sliding wheel assembly 540 can be connected to the door body 21 and matched to the sliding arrangement on the first slide rail 550.

[0132] To achieve a smooth insertion of the door body 21 into the door frame, a door pivot 510 and a first crank 530 and a second crank 520 connected to both ends of the door pivot 510 can be provided on the door body 21. The door pivot 510 is rotatably connected to the door body; one end of the first crank 530 is pivotally connected to the sliding wheel assembly 540, and the other end is fixed to the door pivot 510; one end of the second crank 520 is fixed to the door pivot 510, and the other end is rotatably connected to the second slide rail 560. Thus, when the door body 21 slides to be aligned with the door frame 22, the door pivot 510 can be rotated to allow the door body 21 to move closer to be inserted into the door frame 22 or move away from the door frame 22.

[0133] In some embodiments, for ease of operation, a handle, lever, or other structure may be provided on the door pivot 510.

[0134] In some embodiments, in order to reduce space occupation, the door pivot rod 510 can be rotatably disposed within the first support base 170 and the second support base 370.

[0135] Figure 16 This illustration shows a schematic diagram of the sealing structure between the locking rod and the door pivot rod of the door locking mechanism in an embodiment of this application; see also Figure 1 and Figure 16 In some embodiments, the first locking rod 160 and the second locking rod 170 may be further formed into tubular components, and the door pivot rod 510 may be rotatably embedded in the cavities of the first locking rod 160 and the second locking rod 170 to reduce space occupation.

[0136] In some embodiments, a railway refrigerated car is also provided based on the aforementioned car door, including a car body 600 and the aforementioned car door; the door frame 22 and the first slide rail 550 and the second slide rail 560 can be disposed on the car body 600.

[0137] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0138] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0139] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0140] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0141] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0142] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0143] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0144] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A door locking mechanism, connected between the door body and the door frame; characterized in that, include: A first locking assembly is connected between the door body and the door frame; A drive mechanism is connected to the first locking component to drive the first locking component to perform locking or unlocking operations; A second locking assembly is connected between the door body and the door frame; A transmission component is connected between the drive mechanism and the second locking component so that when the drive mechanism drives the first locking component to perform a locking or unlocking operation, it drives the second locking component to perform a locking or unlocking operation simultaneously. The first locking component includes: A first locking seat is provided on the door frame; A first locking cam is rotatably connected to the door body; The first link is movably mounted on the door body and connected to the first locking cam; A first lever is rotatably connected to the door body, and both ends of the first lever are respectively connected to the drive mechanism and the first connecting rod. Under the drive of the drive mechanism, the first connecting rod is deflected and pushed to move, so as to drive the first locking cam to deflect and engage or disengage from the first locking seat. The second locking assembly includes: A second locking seat is provided on the door frame; The second locking cam is rotatably connected to the door body; The second link is movably mounted on the door body and connected to the second locking cam; The second lever is rotatably connected to the door body, and both ends of the second lever are respectively connected to the transmission assembly and the second connecting rod. Under the drive of the drive mechanism, the second connecting rod is deflected and pushed to move, so as to drive the second locking cam to deflect and engage or disengage from the second locking seat. The first locking assembly further includes a first support base and a first locking rod. The first support base is disposed on the door body, and the first locking rod is rotatably disposed on the first support base and the first locking cam is connected to the first locking rod. The second locking assembly further includes a second support base and a second locking rod. The second support base is disposed on the door body, and the second locking rod is rotatably disposed on the second support base and the second locking cam is connected to the second locking rod. The drive mechanism includes: A slider is movably mounted on the door body, and the slider is connected to the first lever; A spindle is rotatably mounted on the door body. The spindle is screwed into the slider. During the rotation of the spindle, the slider is driven to move along the axial direction of the spindle to push and pull the first lever to deflect. At the same time, the spindle drives the second lever to deflect through the transmission assembly to push and pull the second lever to deflect synchronously. The transmission assembly includes: The drive gear is sleeved on the spindle; A translational linkage is movably mounted on the door body and connected to the second lever. The translational linkage is provided with a transmission tooth that is arranged axially and meshes with the drive gear to drive the drive gear to rotate during the rotation of the spindle, thereby driving the translational linkage to move and push / pull the second lever to deflect.

2. The door locking mechanism as described in claim 1, characterized in that, The transmission assembly also includes: The driven gear meshes with the transmission gear and the drive gear; The connector is connected to the translational connecting rod; The movable link is movably connected at both ends to the connector and the second lever, respectively.

3. The door locking mechanism as described in claim 1, characterized in that, The second locking component may further include: The first guide seat is connected to the door body; A connecting rod is movably disposed within the first guide seat, and both ends of the connecting rod are respectively connected to the second locking cam and the second connecting rod.

4. The door locking mechanism as described in claim 3, characterized in that, The two ends of the connecting rod are pivotally connected to the second connecting rod and the second locking cam, respectively.

5. The door locking mechanism as described in any one of claims 1 to 4, characterized in that, The number of the first locking component and the number of the second locking component are two sets, and the two sets of the first locking component and the two sets of the second locking component are respectively arranged in the four corner areas of the door body.

6. A door locking mechanism, connected between the door body and the door frame; characterized in that, include: A first locking assembly is connected between the door body and the door frame; A drive mechanism is connected to the first locking component to drive the first locking component to perform locking or unlocking operations; A second locking assembly is connected between the door body and the door frame; A transmission component is connected between the drive mechanism and the second locking component so that when the drive mechanism drives the first locking component to perform a locking or unlocking operation, it drives the second locking component to perform a locking or unlocking operation simultaneously. The first locking component includes: A first locking seat is provided on the door frame; A first locking cam is rotatably connected to the door body; The first link is movably mounted on the door body and connected to the first locking cam; A first lever is rotatably connected to the door body, and both ends of the first lever are respectively connected to the drive mechanism and the first connecting rod. Under the drive of the drive mechanism, the first connecting rod is deflected and pushed to move, so as to drive the first locking cam to deflect and engage or disengage from the first locking seat. The second locking assembly includes: A second locking seat is provided on the door frame; The second locking cam is rotatably connected to the door body; The second link is movably mounted on the door body and connected to the second locking cam; The second lever is rotatably connected to the door body, and both ends of the second lever are respectively connected to the transmission assembly and the second connecting rod. Under the drive of the drive mechanism, the second connecting rod is deflected and pushed to move, so as to drive the second locking cam to deflect and engage or disengage from the second locking seat. The first locking assembly further includes a first support base and a first locking rod. The first support base is disposed on the door body, and the first locking rod is rotatably disposed on the first support base and the first locking cam is connected to the first locking rod. The second locking assembly further includes a second support base and a second locking rod. The second support base is disposed on the door body, and the second locking rod is rotatably disposed on the second support base and the second locking cam is connected to the second locking rod. The drive mechanism includes: A slider is movably mounted on the door body, and the slider is connected to the first lever; A spindle is rotatably mounted on the door body. The spindle is screwed into the slider. During the rotation of the spindle, the slider is driven to move along the axial direction of the spindle to push and pull the first lever to deflect. At the same time, the spindle drives the second lever to deflect through the transmission assembly to push and pull the second lever to deflect synchronously. The transmission assembly includes: A translational linkage is movably mounted on the door body and connected to the second lever; A transmission screw cylinder is sleeved on the translational connecting rod and screwed into the transmission teeth provided on the translational connecting rod; A drive gear is sleeved on the spindle, and the drive gear meshes with a helical gear formed on the outer circumferential surface of the transmission screw. During the rotation of the spindle, the drive gear is driven to rotate, thereby driving the transmission screw to rotate and driving the translational connecting rod to move and push / pull the second lever to deflect.

7. The door locking mechanism as described in claim 6, characterized in that, The transmission assembly also includes: The driven gear meshes with the transmission screw and the drive gear.

8. The door locking mechanism as described in claim 6, characterized in that, The transmission assembly also includes: The connector is connected to the translational connecting rod; The movable link is movably connected at both ends to the connector and the second lever, respectively.

9. The door locking mechanism as described in claim 6, characterized in that, The second locking component may further include: The first guide seat is connected to the door body; A connecting rod is movably disposed within the first guide seat, and both ends of the connecting rod are respectively connected to the second locking cam and the second connecting rod.

10. The door locking mechanism as described in claim 9, characterized in that, The two ends of the connecting rod are pivotally connected to the second connecting rod and the second locking cam, respectively.

11. The door locking mechanism as described in any one of claims 6 to 10, characterized in that, The number of the first locking component and the number of the second locking component are two sets, and the two sets of the first locking component and the two sets of the second locking component are respectively arranged in the four corner areas of the door body.

12. A vehicle door, characterized in that, include: Door frame, door body, and door locking mechanism as described in any one of claims 1 to 11; The door body is connected to the door frame, the first locking component and the second locking component are respectively connected between the door body and the door frame, and the transmission component and the drive mechanism are disposed on the door body.

13. A railway refrigerated car, characterized in that, Includes the vehicle door as described in claim 12.

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