A door holdback device and a passenger door

Abstract

This application discloses a door clamping device and a passenger compartment door. The door clamping device includes a latch, a full-range locking device, a motor, and a transmission component. The motor is connected to the input end of the full-range locking device. The output end of the full-range locking device is connected to the transmission component. The transmission component is connected to the latch. When the motor drives the input end of the full-range locking device to rotate forward, it drives the latch to rotate and lock. When the motor drives the input end of the full-range locking device to rotate in reverse, it supports the latch to rotate and unlock. When the transmission component drives the output end of the full-range locking device to rotate in reverse, the full-range locking device locks the output end. This application has the effect of electrically driven and long-term locking of passenger compartment doors.

Description

Technical Field

[0001] This application relates to the field of train equipment, and in particular to a door clamping device and a passenger compartment door. Background Technology

[0002] The auxiliary clamping system is a core component of the airtightness performance of urban rail trains. Currently, the power source for auxiliary clamping devices is pneumatic, making them highly dependent on the train's air supply. Using air as the energy transfer medium requires the installation of air source devices and air pipelines, increasing the system weight. Furthermore, it shares an air supply with the braking system. Due to the large number of doors and the high air consumption, the air pressure of the entire train is unstable. In addition, pneumatic control is noisy and has high maintenance costs.

[0003] Therefore, how to provide a door clamping device that can lock the passenger compartment door for a long time and uses a non-pneumatic method is an urgent problem to be solved. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a door clamping device and a passenger compartment door that can be electrically driven and can lock the passenger compartment door for a long time.

[0005] This application provides a door clamping device, which includes a latch, a full-length locking device, a motor, and a transmission component. The motor is connected to the input end of the full-range locking device; The output end of the full-range locking device is connected to the transmission component; The transmission component is connected to the locking tongue component; When the motor drives the input end of the full-range locking device to rotate forward, it is used to drive the locking tongue to rotate and lock. When the motor drives the input end of the full-range locking device to rotate in reverse, it is used to support the rotation of the locking tongue and unlock. When the transmission component drives the output end of the full-range locking device to reverse, the full-range locking device locks the output end.

[0006] Optionally, the full-range locking device includes: an outer ring body, an inner star wheel, a pawl, a rolling element, and an elastic element; The inner star wheel is inserted into the outer ring body, and a wedge-tightening receiving groove is provided around the inner star wheel; The rolling element, the pawl, and the elastic element are disposed in the wedge-tightening receiving groove, and are arranged sequentially along the forward rotation direction of the inner star wheel axis. The inner star wheel serves as the output end and is connected to the transmission component; the pawl serves as the input end and is connected to the motor. When the inner star wheel reverses, the rolling element is wedged between the inner star wheel and the outer ring body to lock the inner star wheel; When the pawl reverses, it pushes against the rolling element and compresses the elastic element. The rolling element leaves the wedge-tight position, and the inner star wheel follows suit and reverses.

[0007] Optionally, the rolling element is a roller; the elastic element is a compression spring; The inner star wheel has a spring positioning groove recessed on the side wall of the wedge-tightening receiving groove, and the elastic element is partially inserted into the spring positioning groove.

[0008] Optionally, the pawl is provided with a pushing part, which is disposed on the outer periphery and protrudes toward the rolling element; The bottom of the wedge-tightening receiving groove includes a wedge-tightening plane. Along the axis of the inner star wheel, the distance between the wedge-tightening plane and the outer ring body narrows, and the narrowest point is smaller than the diameter of the rolling element. When the pawl reverses, the pushing part abuts against the rolling element and moves away from the wedge position, and the inner star wheel follows suit and reverses.

[0009] Optionally, the transmission component includes a gear set, a locking tongue clamping block, and an electromagnetic clutch; The gear set includes a high-speed input shaft and a low-speed output shaft; The output end of the full-range locking device is connected to the high-speed input shaft; The low-speed output shaft is connected to the locking tongue clamping block via the electromagnetic clutch; The locking tongue pressing block is abutting and connected to the locking tongue to abut against the locking tongue and keep it locked. When the electromagnetic clutch is energized and engaged, the low-speed output shaft and the locking tongue clamping block rotate synchronously; when the electromagnetic clutch is de-energized and disengaged, the low-speed output shaft and the locking tongue clamping block release torque transmission.

[0010] Optionally, the door clamping device further includes a latch elastic reset component and a pressure block elastic reset component; The latch elastic reset member is directly or indirectly connected to the latch member; when the latch member rotates to the locked position, the latch elastic reset member accumulates elastic potential energy to drive the latch member to reverse and reset. The elastic reset component of the pressure block is directly or indirectly connected to the locking tongue pressing block; when the locking tongue pressing block rotates forward to abut against the locking tongue and is locked, the elastic reset component of the pressure block accumulates elastic potential energy to drive the locking tongue pressing block to reverse and reset.

[0011] Optionally, the door clamping device further includes a rotation angle detection device; The rotation angle detection device is used to detect the rotation angle of the locking tongue pressing block; When the locking tongue pressing block rotates forward and presses against the locking tongue to lock, the rotation angle detection device triggers a preset signal to control the motor to stop. When the locking tongue pressing block reverses and the locking tongue unlocks, the rotation angle detection device triggers a preset signal to control the motor to stop.

[0012] Optionally, the rotation angle detection device includes a variable diameter wheel and a pressure-controlled switch; The variable diameter wheel rotates coaxially with the locking tongue pressing block; When the small diameter circumferential surface of the variable diameter wheel is directly opposite the pressure-controlled switch, the pressure-controlled switch remains open; When the large diameter circumference of the variable diameter wheel presses against the pressure control switch, the pressure control switch outputs the preset signal.

[0013] Optionally, the door clamping device may further include a lock body bracket; The lock body bracket includes a base, a first vertical mounting wall, and a second vertical mounting wall; The first vertical mounting wall and the second vertical mounting wall are arranged parallel to each other on the base; A latching space is formed between the first vertical mounting wall and the second vertical mounting wall; the side of the first vertical mounting wall facing away from the second vertical mounting wall is the first side space; the side of the second vertical mounting wall facing away from the first vertical mounting wall is the second side space. The latch pressing block, the latch component, the full-range locking device, and the latch elastic reset component are disposed in the latch space; The motor, the pressure block elastic reset component, and the rotation angle detection device are located in the first side space; The gear set and electromagnetic clutch are located in the second side space.

[0014] This application also provides a guest room door, which includes the door clamping device as described above.

[0015] The beneficial effects of this invention are as follows: The door clamping device and passenger door provided in this application, by setting a full-range locking device, can support the forward and reverse rotation of the motor and transmit torque to the latch, thereby controlling the locking or unlocking of the latch. Furthermore, when the latch transmits reverse torque to the transmission component, the full-range locking device can lock the output end, preventing the latch from driving the transmission component to reverse, thus keeping the latch in a locked state and locking the external passenger door. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of an embodiment of the door clamping device of this application.

[0018] Figure 2 for Figure 1 The diagram shows a structural schematic of the door clamping device from another perspective.

[0019] Figure 3 for Figure 1 The diagram shows an exploded view of some parts of the door clamping device.

[0020] Figure 4 for Figure 1 The diagram shows the structure of the door clamping device in the orthographic projection view.

[0021] Figure 5 for Figure 4 A cross-sectional view of the door in the AA direction with the door clamping device in the locked state.

[0022] Figure 6 for Figure 4 A cross-sectional view of the door in the AA direction with the door clamping device in the unlocked state.

[0023] Figure 7 for Figure 6 Enlarged schematic diagram of relevant parts of the central locking device.

[0024] Figure 8 for Figure 1 The diagram shows the door clamping device from a side projection view, with the door clamping device in a locked state.

[0025] Figure 9 for Figure 1 The diagram shows the door clamping device from a side projection view, with the door clamping device in the unlocked state.

[0026] Reference numerals: 100-Lock tongue, 200-Full-range locking device, 210-Outer ring body, 220-Inner star wheel, 221-Wedge-tightening receiving groove, 222-Spring positioning groove, 223-Wedge-tightening plane, 230-Pawl, 231-Pushing part, 240-Rolling element, 250-Elastic element, 300-Motor, 400-Transmission element, 410-Gear set, 411-High-speed input shaft, 412-Low-speed output shaft, 420- 421-Eccentric pull block, 430-Electromagnetic clutch, 510-Lock tongue elastic reset component, 520-Pressure block elastic reset component, 600-Rotation angle detection device, 610-Variable diameter wheel, 620-Pressure control switch, 700-Lock body bracket, 710-Base, 711-Lock tongue space, 720-First vertical mounting wall, 721-First side space, 730-Second vertical mounting wall, 731-Second side space. Detailed Implementation

[0027] The specific embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this application. Based on the description of this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0028] In the description of this application, unless otherwise expressly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0029] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product is usually placed in during use. They are used only for the convenience of description and to simplify 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.

[0030] The terms “first,” “second,” “third,” etc., are merely used to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0031] The terms “include,” “contain,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 This application provides an embodiment of a door clamping device.

[0033] The door clamping device includes a latch 100, a full-length locking device 200, a motor 300, and a transmission component 400.

[0034] The motor 300 is connected to the input terminal of the full-range locking device 200.

[0035] The output end of the full-range locking device 200 is connected to the transmission component 400.

[0036] The transmission component 400 is connected to the locking tongue component 100. The transmission component 400 may be a direct connection between the motor 300 and the locking tongue component 100; it may also include a gear set to amplify torque on the output shaft; and it may include a flexible connector to reduce instantaneous impact force.

[0037] Please see Figure 4 , Figure 5 , Figure 6 When the motor 300 drives the input end of the full-range locking device 200 to rotate forward (e.g. Figure 5 (As indicated by the arc-shaped arrow on the right side), used to drive the locking tongue 100 to rotate and lock (as shown). Figure 5 (As indicated by the arc-shaped arrow on the left side of the middle); In this embodiment, specifically, the locking tongue pressing block 420 rotates in the same direction as the input end of the full-range locking device 200 (e.g., ...). Figure 5 The locking tongue 100 is driven by the arc-shaped indicator arrow in the middle. When the motor 300 drives the input end of the full-range locking device 200 to reverse (as shown by the arrow in the middle), the locking tongue 100 is driven to reverse. Figure 6 (As indicated by the arc-shaped arrow on the right side), used to support the rotation of the locking tongue 100 and unlocking (e.g.) Figure 6 (As indicated by the arc-shaped arrow on the left side of the middle); In this embodiment, specifically, the locking tongue pressing block 420 and the input end of the full-range locking device 200 are reversed in the same direction (e.g., Figure 6 (As indicated by the arc-shaped arrow in the middle) supports the driving of the locking tongue 100.

[0038] The function of supporting the rotation and unlocking of the latch 100 can be achieved by: directly outputting torque to drive the latch 100 to unlock; or by creating space so that the latch 100 unlocks under the action of other forces. In this embodiment, the torque output by the motor 300 in reverse direction drives the transmission component 400, causing the latch clamping block 420 in the transmission component 400 to create space. Under the elastic force of the latch elastic reset component 510, the latch 100 rotates and unlocks. Of course, in other embodiments, the transmission component 400 can also directly output torque to the latch 100 to unlock it.

[0039] When the transmission component 400 drives the output end of the full-range locking device 200 to reverse, the full-range locking device 200 locks the output end.

[0040] The door clamping device provided in this embodiment, by incorporating a full-range locking device 200, supports both forward and reverse rotation of the motor 300 and transmits torque to the latch 100, thereby controlling the locking or unlocking of the latch 100. Furthermore, when the latch 100 transmits reverse torque to the transmission component 400, the full-range locking device 200 can lock the output end, preventing the latch 100 from driving the transmission component 400 to reverse, thus keeping the latch 100 in a locked state and locking the external passenger door.

[0041] Specifically, the full-range locking device 200 can adopt various schemes. In this embodiment, a bidirectional overrunning clutch-like scheme is adopted. In other embodiments, other schemes can also be adopted, such as including an electromagnetic brake, which locks the output end when the locking tongue 100 needs to be locked. Alternatively, it can include a ratchet locking device and an electrical unlocking device, which locks the rotation in the reverse direction when the locking tongue 100 needs to be locked, and unlocks the ratchet locking device when the locking tongue 100 needs to be unlocked.

[0042] Please refer to Figure 3 , Figure 7 Furthermore, in this embodiment, the full-process locking device 200 includes: an outer ring body 210, an inner star wheel 220, a pawl 230, a rolling element 240, and an elastic element 250.

[0043] The inner star wheel 220 is inserted into the outer ring body 210, and a wedge-tightening receiving groove 221 is provided in the circumference of the inner star wheel 220.

[0044] The rolling element 240, the pawl 230, and the elastic element 250 are disposed in the wedge-tightening receiving groove 221 and rotate in the forward direction along the axis of the inner star wheel 220 (e.g., Figure 7 As indicated by the arc-shaped indicator arrow, the elastic element 250, the rolling element 240, and the pawl 230 are arranged sequentially.

[0045] The inner star wheel 220 is connected to the transmission component 400 as an output end; the pawl 230 is connected to the motor 300 as an input end.

[0046] When the inner star wheel 220 reverses, the rolling element 240 is wedged between the inner star wheel 220 and the outer ring body 210 to lock the inner star wheel 220.

[0047] When the pawl 230 reverses, it pushes against the rolling element 240 to compress the elastic element 250, causing the rolling element 240 to leave the wedge-tight position, and the inner star wheel 220 to follow suit and reverse.

[0048] In this embodiment, using the aforementioned full-range locking device 200, the inner star wheel 220 can be driven to rotate synchronously when the motor 300 rotates forward or in reverse. When the motor 300 is de-energized, the inner star wheel 220 is restricted from rotating in the reverse direction. Thus, when the locking tongue 100 needs to be kept locked, the locking tongue 100 can be kept locked without any action due to the mechanical characteristics of the full-range locking device 200 itself; when unlocking is required, controlling the motor 300 to reverse will unlock the device.

[0049] Furthermore, in this embodiment, the rolling element 240 is a roller; the elastic element 250 is a compression spring.

[0050] The inner star wheel 220 has a spring positioning groove 222 recessed on the side wall of the wedge-tightening receiving groove 221, and the elastic element 250 is partially inserted into the spring positioning groove 222.

[0051] Compression springs and rollers are combined, featuring simple structure, good wedging effect, and easy manufacturing and assembly.

[0052] Of course, in other embodiments, the rolling element 240 may be a ball or a wedge; the elastic element 250 may be a spring, a ring spring, an engineering plastic elastic spring, etc.

[0053] Furthermore, in this embodiment, the pawl 230 is provided with a pushing part 231, which is disposed on the outer periphery and protrudes toward the rolling element 240.

[0054] The bottom of the wedge-tightening receiving groove 221 includes a wedge-tightening plane 223. Along the axis of the inner star wheel 220, the distance between the wedge-tightening plane 223 and the outer ring body 210 narrows, and the narrowest point is smaller than the diameter of the rolling element 240.

[0055] When the pawl 230 reverses, the pushing part 231 pushes against the rolling element 240 and moves away from the wedge position, and the inner star wheel 220 follows suit and reverses.

[0056] In this embodiment, by providing a pushing part 231 on the pawl 230, it can push the rolling element 240 away from the wedge position when reversing, thereby achieving the effect of reversing.

[0057] Since the door clamping device is driven by motor 300, a gear set is usually added to achieve the function of a reducer in order to increase the torque. However, when the entire device is powered off, the latch 100 cannot be quickly unlocked and reversed.

[0058] Please refer to Figure 2 To address the aforementioned issues, in this embodiment, the transmission component 400 further includes a gear set 410, a locking tongue pressing block 420, and an electromagnetic clutch 430.

[0059] The gear set 410 includes a high-speed input shaft 411 and a low-speed output shaft 412.

[0060] The output end of the full-range locking device 200 is connected to the high-speed input shaft 411.

[0061] The low-speed output shaft 412 is connected to the locking tongue pressing block 420 via the electromagnetic clutch 430.

[0062] The locking tongue pressing block 420 is abutting and connected to the locking tongue 100 to keep the locking tongue 100 locked.

[0063] When the electromagnetic clutch 430 is energized and engaged, the low-speed output shaft 412 and the locking tongue pressing block 420 rotate synchronously; when the electromagnetic clutch 430 is de-energized and disengaged, the low-speed output shaft 412 and the locking tongue pressing block 420 release torque transmission.

[0064] In this embodiment, by incorporating an electromagnetic clutch 430, unexpected power outages can be addressed. During a power outage, the electromagnetic clutch 430 de-energizes and disengages, decoupling the locking tongue clamping block 420 from the low-speed output shaft 412, allowing it to move freely. Correspondingly, the locking tongue 100 can also move freely.

[0065] Please refer to Figure 2 , Figure 8 , Figure 9 Furthermore, in this embodiment, the door clamping device further includes a latch elastic reset member 510 and a pressure block elastic reset member 520. Specifically, the latch elastic reset member 510 is a torsion spring, and the pressure block elastic reset member 520 is a coil spring. They can be directly or indirectly connected to the latch member 100 and the latch clamping block 420.

[0066] Specifically, a through hole is provided on the latch 100, and a section of the latch elastic reset member 510 is inserted into the through hole, thereby driving the latch 100 to reverse and reset; this connection method is a direct connection.

[0067] When the latch 100 rotates to the locked position, the latch elastic reset member 510 accumulates elastic potential energy (e.g., Figure 5 As shown), to drive the locking tongue 100 to reverse and reset (as shown). Figure 6 (As shown).

[0068] Specifically, the rotating shaft of the latch pressing block 420 is a square shaft, and an eccentric pull block 421 is connected in series on the square shaft. The pressing block elastic reset member 520 is connected to the eccentric pull block 421, thereby driving the latch pressing block 420 to reverse and reset; this connection method is an indirect connection.

[0069] When the locking tongue pressing block 420 rotates clockwise to abut against the locking tongue member 100 and is locked, the pressing block elastic reset member 520 accumulates elastic potential energy (such as...). Figure 8 As shown), to drive the locking tongue clamping block 420 to reverse and reset (as shown). Figure 9 (As shown).

[0070] In this embodiment, by setting the locking tongue elastic reset component 510 and the pressure block elastic reset component 520, the elastic force can be released immediately when the entire device is unexpectedly powered off, the electromagnetic clutch 430 is de-energized and disengaged, and the locking tongue pressure block 420 is decoupled from the low-speed output shaft 412, thereby driving the locking tongue pressure block 420 to reverse and reset, and driving the locking tongue component 100 to reverse and reset.

[0071] Furthermore, in this embodiment, the door clamping device also includes a rotation angle detection device 600.

[0072] The rotation angle detection device 600 is used to detect the rotation angle of the latch pressing block 420.

[0073] When the locking tongue pressing block 420 rotates forward and presses against the locking tongue 100 to lock, the rotation angle detection device 600 triggers a preset signal to control the motor 300 to stop.

[0074] When the locking tongue pressing block 420 reverses and the locking tongue 100 unlocks, the rotation angle detection device 600 triggers a preset signal to control the motor 300 to stop.

[0075] In this embodiment, by adding a rotation angle detection device 600, the rotation angle of the locking tongue pressing block 420 can be easily controlled, avoiding excessive rotation and ensuring that the locking tongue 100 is completely locked.

[0076] Please refer to Figure 1 , Figure 2 , Figure 3 Furthermore, in this embodiment, the rotation angle detection device 600 includes a variable diameter wheel 610 and a pressure-controlled switch 620.

[0077] The variable diameter wheel 610 rotates coaxially with the locking tongue pressing block 420.

[0078] When the minor diameter circumferential surface of the variable diameter wheel 610 is directly opposite the pressure control switch 620, the pressure control switch 620 remains open.

[0079] When the large diameter circumferential surface of the variable diameter wheel 610 presses against the pressure control switch 620, the pressure control switch 620 outputs the preset signal.

[0080] In this embodiment, the above-described mechanical structure is used to monitor the rotation angle, which has the advantages of simple and stable structure and no need for complex sensing and control circuits.

[0081] Of course, in other embodiments, photoelectric sensors, electromagnetic sensors, etc., can also be used to monitor the rotation angle of the latch pressing block 420.

[0082] Furthermore, in this embodiment, the door clamping device also includes a lock body bracket 700. The lock body bracket 700 is the supporting structure for the entire device, and all the aforementioned components are ultimately supported by the lock body bracket 700.

[0083] The lock body bracket 700 includes a base 710, a first vertical mounting wall 720, and a second vertical mounting wall 730.

[0084] The first vertical mounting wall 720 and the second vertical mounting wall 730 are arranged parallel to each other on the base 710.

[0085] A latch space 711 is formed between the first vertical mounting wall 720 and the second vertical mounting wall 730; the side of the first vertical mounting wall 720 facing away from the second vertical mounting wall 730 is the first side space 721; the side of the second vertical mounting wall 730 facing away from the first vertical mounting wall 720 is the second side space 731.

[0086] The latch pressing block 420, the latch component 100, the full-range locking device 200, and the latch elastic reset component 510 are disposed in the latch space 711.

[0087] The motor 300, the pressure block elastic reset component 520, and the rotation angle detection device 600 are located in the first side space 721.

[0088] The gear set 410 and the electromagnetic clutch 430 are located in the second side space 731.

[0089] In this embodiment, by setting up a lock body bracket 700, three spaces are arranged, and different components are arranged in each space, thereby achieving the effect of small overall space occupation and reasonable space layout.

[0090] This application also provides a guest room door. The guest room door includes the door clamping device as described above.

[0091] When the train is in motion, the passenger compartment door is closed, the door clamping device is energized, and the electromagnetic clutch 430 is engaged. At this time, under the mechanical locking function of the full-range locking device 200, the locking tongue 100 keeps the passenger compartment door closed, preventing the door from moving in the direction of opening.

[0092] When the train experiences an unexpected power outage, the electromagnetic clutch 430 in the door clamping device will lose power and instantly disengage. At this time, the mechanical lock function of the full-length locking device 200 will no longer function, and the elastic force of the latch elastic reset member 510 and the pressure block elastic reset member 520 will immediately drive the latch pressure block 420 and the latch member 100 to reset to the open state, thereby releasing the restriction on the door's movement in the opening direction. In case of an emergency, passengers can pull the emergency unlocking handle to open the main locking system of the load-bearing drive mechanism, and the door will open, allowing them to safely escape the carriage.

[0093] Since the passenger compartment door includes the door clamping device described in the above embodiments, it possesses all the advantages of the door clamping device described in the above embodiments. For details, please refer to the above description; further elaboration will not be repeated here.

[0094] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0095] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. A door clamping device, characterized in that, The door clamping device includes a latch (100), a full-length locking device (200), a motor (300), and a transmission component (400); The motor (300) is connected to the input end of the full-range locking device (200); The output end of the full-range locking device (200) is connected to the transmission component (400); The transmission component (400) is connected to the locking tongue component (100); When the motor (300) drives the input end of the full-range locking device (200) to rotate forward, it drives the locking tongue (100) to rotate and lock. When the motor (300) drives the input end of the full-range locking device (200) to rotate in reverse, it supports the locking tongue (100) to rotate and unlock. When the transmission component (400) drives the output end of the full-range locking device (200) to reverse, the full-range locking device (200) locks the output end.

2. The door clamping device as described in claim 1, characterized in that, The full-range locking device (200) includes: an outer ring (210), an inner star wheel (220), a pawl (230), a rolling element (240), and an elastic element (250); The inner star wheel (220) is inserted into the outer ring body (210), and a wedge-tightening receiving groove (221) is provided in the circumference of the inner star wheel (220); The rolling element (240), the pawl (230), and the elastic element (250) are disposed in the wedge-tightening receiving groove (221), and the elastic element (250), the rolling element (240), and the pawl (230) are arranged sequentially along the positive rotation direction of the axis of the inner star wheel (220); The inner star wheel (220) is connected to the transmission component (400) as an output end; the pawl (230) is connected to the motor (300) as an input end; When the inner star wheel (220) reverses, the rolling element (240) is wedged between the inner star wheel (220) and the outer ring body (210) to lock the inner star wheel (220); When the pawl (230) reverses, it pushes against the rolling element (240) to compress the elastic element (250), the rolling element (240) leaves the wedge position, and the inner star wheel (220) follows suit and reverses.

3. The door clamping device as described in claim 2, characterized in that, The rolling element (240) is a roller; the elastic element (250) is a compression spring; The inner star wheel (220) has a spring positioning groove (222) recessed on the side wall of the wedge-tightening receiving groove (221), and the elastic element (250) is partially inserted into the spring positioning groove (222).

4. The door clamping device as described in claim 3, characterized in that, The pawl (230) is provided with a pushing part (231), which is located on the outer periphery and protrudes toward the rolling element (240); The bottom of the wedge-tightening receiving groove (221) includes a wedge-tightening plane (223). Along the axis of the inner star wheel (220) in the forward rotation direction, the distance between the wedge-tightening plane (223) and the outer ring body (210) narrows, and the narrowest point is smaller than the diameter of the rolling element (240). When the pawl (230) reverses, the pushing part (231) pushes against the rolling element (240) and moves away from the wedge position, and the inner star wheel (220) follows suit and reverses.

5. The door clamping device as described in claim 1, characterized in that, The transmission component (400) includes a gear set (410), a locking tongue pressing block (420), and an electromagnetic clutch (430); The gear set (410) includes a high-speed input shaft (411) and a low-speed output shaft (412); The output end of the full-range locking device (200) is connected to the high-speed input shaft (411); The low-speed output shaft (412) is connected to the locking tongue pressing block (420) via the electromagnetic clutch (430); The locking tongue pressing block (420) is abutting and connected to the locking tongue (100) to abut against the locking tongue (100) and keep it locked; When the electromagnetic clutch (430) is energized and engaged, the low-speed output shaft (412) and the locking tongue pressing block (420) rotate synchronously; when the electromagnetic clutch (430) is de-energized and disengaged, the low-speed output shaft (412) and the locking tongue pressing block (420) release torque transmission.

6. The door clamping device as described in claim 5, characterized in that, The door clamping device also includes a latch elastic reset component (510) and a pressure block elastic reset component (520); The locking tongue elastic reset member (510) is directly or indirectly connected to the locking tongue member (100); when the locking tongue member (100) rotates to the locked position, the locking tongue elastic reset member (510) accumulates elastic potential energy to drive the locking tongue member (100) to reverse and reset. The pressure block elastic reset member (520) is directly or indirectly connected to the latch pressing block (420); when the latch pressing block (420) rotates forward to abut against the latch (100) and is locked, the pressure block elastic reset member (520) accumulates elastic potential energy to drive the latch pressing block (420) to reverse and reset.

7. The door clamping device as described in claim 6, characterized in that, The door clamping device also includes a rotation angle detection device (600); The rotation angle detection device (600) is used to detect the rotation angle of the latch pressing block (420); When the locking tongue pressing block (420) rotates forward and presses against the locking tongue (100) to lock, the rotation angle detection device (600) triggers a preset signal to control the motor (300) to stop. When the locking tongue pressing block (420) reverses and the locking tongue (100) unlocks, the rotation angle detection device (600) triggers a preset signal to control the motor (300) to stop.

8. The door clamping device as described in claim 7, characterized in that, The rotation angle detection device (600) includes a variable diameter wheel (610) and a pressure control switch (620); The variable diameter wheel (610) and the locking tongue pressing block (420) rotate coaxially; When the minor diameter circumferential surface of the variable diameter wheel (610) is directly opposite the pressure control switch (620), the pressure control switch (620) remains open; When the large diameter circumferential surface of the variable diameter wheel (610) presses against the pressure control switch (620), the pressure control switch (620) outputs the preset signal.

9. The door clamping device as described in claim 7, characterized in that, The door clamping device also includes a lock body bracket (700); The lock body bracket (700) includes a base (710), a first vertical mounting wall (720), and a second vertical mounting wall (730); The first vertical mounting wall (720) and the second vertical mounting wall (730) are arranged parallel to each other on the base (710); A latch space (711) is formed between the first vertical mounting wall (720) and the second vertical mounting wall (730); the side of the first vertical mounting wall (720) facing away from the second vertical mounting wall (730) is a first side space (721); the side of the second vertical mounting wall (730) facing away from the first vertical mounting wall (720) is a second side space (731). The latch pressing block (420), the latch component (100), the full-range locking device (200), and the latch elastic reset component (510) are disposed in the latch space (711); The motor (300), the pressure block elastic reset component (520), and the rotation angle detection device (600) are disposed in the first side space (721); The gear set (410) and the electromagnetic clutch (430) are located in the second side space (731).

10. A guest room door, characterized in that, Includes the door clamping device as described in any one of claims 1 to 9.

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