Pneumatic control cabin door lock

Abstract

A pneumatic control cabin door lock comprises an unlocking turning plate, an unlocking shifting arm is fixedly connected to the inner side of the unlocking turning plate, and the unlocking shifting arm and a locking / unlocking cam are correspondingly arranged; the lock further comprises a lock cylinder shifting piece connected with a key, the lock cylinder shifting piece is connected with a shifting rod, the shifting rod is connected with a double-acting air cylinder, the other end of the double-acting air cylinder is connected with a locking / unlocking cam through a motion conversion mechanism, and the locking / unlocking cam is in transmission connection with an unlocking gear. The use convenience of the cabin door lock is improved, unlocking / locking can be conducted through a key, and meanwhile pneumatic central control unlocking / locking can be achieved; the two unlocking / locking modes do not interfere with each other, and compared with other cabin door locks, pneumatic central control locking can be additionally achieved after key unlocking; (2) after the key is locked, pneumatic central control unlocking is carried out; (3) after the pneumatic central control is unlocked, the key is locked; and (4) unlocking by a key after the pneumatic central control is locked.

Description

Technical Field

[0001] This utility model relates to various motor vehicles such as buses and commercial vehicles, and specifically to a pneumatically controlled cabin door lock. Background Technology

[0002] Cabin door locks are locks on the side and rear doors of passenger vehicles. Using cabin door locks can prevent theft of items in the luggage compartment and prevent the doors from being opened accidentally while the vehicle is in motion, thus ensuring operational safety. At the same time, the ease of operation of cabin door locks, and whether the driver, passengers or staff can quickly unlock and open the doors, reducing the waiting time for passengers or maintenance personnel, is an important feature of cabin door locks.

[0003] Traditional bus door locks mostly use mechanical locks without a central unlocking handle, or once the central unlocking handle is unlocked, it cannot be locked again with a key, resulting in poor usability. For example, after the bus stops at a passenger station, all the luggage compartment doors must be unlocked one by one with a key to open all the doors for storing and retrieving luggage; or after the doors are unlocked by the central lock, it is necessary to go to the driver's cab to operate the button to lock the doors. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to realize a pneumatically controlled cabin door lock that can be unlocked / locked with a key and at the same time be unlocked / locked by pneumatic central control.

[0005] To solve the above problems, this utility model is achieved through the following technical solution:

[0006] A pneumatic cabin door lock includes an unlocking flap, wherein an unlocking lever is fixedly connected to the inner side of the unlocking flap, and the unlocking lever is configured to correspond to a locking / unlocking cam.

[0007] It also includes a lock cylinder paddle connected to the key, the lock cylinder paddle being connected to a lever, the lever being connected to a double-acting cylinder, the other end of the double-acting cylinder being connected to a locking / unlocking cam via a motion conversion mechanism, and the locking / unlocking cam being connected to an unlocking gear transmission.

[0008] The lever has an elongated hole, and the double-acting cylinder has a first protrusion located inside the elongated hole.

[0009] The motion conversion mechanism includes a rotating component; a groove and a protruding shank are provided on the rotating component, wherein a second protruding rod is connected in the groove and the second protruding rod is fixed on the output shaft of the double-acting cylinder; the protruding shank is connected to a locking / unlocking cam.

[0010] The locking / unlocking cam includes a cam disk with a pawl and a drive block. The pawl is connected to a shank on the motion conversion mechanism. The drive block is positioned opposite to the unlocking lever. When the drive block rotates to a position below the unlocking lever, the up-and-down movement of the unlocking lever will touch the drive block. When the drive block is not located below the unlocking lever, the up-and-down movement of the unlocking lever will not touch the drive block.

[0011] The unlocking gears include two meshing unlocking gears, with an unlocking lever connected to the unlocking gears.

[0012] The double-acting cylinder is equipped with a double solenoid valve, which is connected to the vehicle controller.

[0013] A lock cylinder flap is provided on the outside of the lock cylinder lever.

[0014] Compared with the prior art, this utility model has the following beneficial effects: This utility model improves the ease of use of the hatch lock, which can be unlocked / locked with a key, and can also be unlocked / locked by pneumatic central control; and the two unlocking / locking methods do not interfere with each other. Compared with other hatch locks, it can additionally achieve: ① pneumatic central control locking after key unlocking; ② pneumatic central control unlocking after key locking; ③ key locking after pneumatic central control unlocking; ④ key unlocking after pneumatic central control locking. Attached Figure Description

[0015] Figure 1 This is a front view of the hatch lock of this utility model;

[0016] Figure 2 Diagram showing the door lock structure and locking state;

[0017] Figure 3 Diagram showing the hatch lock structure and unlocking status;

[0018] Figure 4 This is a structural diagram of the motion conversion mechanism and the locking / unlocking cam. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a pneumatic cabin door lock includes an unlocking flap 1, and an unlocking lever 7 is fixedly connected to the inner side of the unlocking flap 1. The unlocking lever 7 is correspondingly set with a locking / unlocking cam 6.

[0022] It also includes a lock cylinder paddle 3 connected to the key, a lever 12 connected to the lock cylinder paddle 3, the lever 12 connected to a double-acting cylinder 4, the other end of the double-acting cylinder 4 being connected to a locking / unlocking cam 6 via a motion conversion mechanism 5, the locking / unlocking cam 6 being connected to an unlocking gear 9, and an unlocking lever 10 being connected to the unlocking gear 9.

[0023] Furthermore, the lever 12 is provided with an elongated hole, and a first protrusion 11 is provided on the double-acting cylinder 4, the first protrusion 11 being located within the elongated hole. It should be noted that the first protrusion 11 is located on the cylinder body of the double-acting cylinder 4.

[0024] Furthermore, the motion conversion mechanism 5 includes a rotating component 13, which is mounted on the lock body via a pin. During operation, the rotating component 13 rotates around the pin axis. The rotating component 13 is provided with a groove 14 and a protruding shank 15. A second protruding rod 16 is connected in the groove 14 and is fixed on the output shaft of the double-acting cylinder 4. The protruding shank 15 is connected to the locking / unlocking cam 6.

[0025] Furthermore, the locking / unlocking cam 6 includes a cam disc 17, which is also mounted on the lock body via a pin. During operation, the cam disc 17 rotates around the pin axis. The cam disc 17 is provided with a pawl 18 and a drive block 19. The pawl 18 is connected to the shank 15 on the motion conversion mechanism 5. The drive block 19 is positioned opposite to the unlocking lever 7. When the drive block 19 rotates to a position below the unlocking lever 7, the up-and-down movement of the unlocking lever 7 will touch the drive block 19. When the drive block 19 is not located below the unlocking lever 7, the up-and-down movement of the unlocking lever 7 will not touch the drive block 19.

[0026] Furthermore, the unlocking gear 9 includes two meshing unlocking gears, and each of the two unlocking gears is connected to an unlocking lever 10.

[0027] Furthermore, the double-acting cylinder 4 is equipped with a double solenoid valve, which is connected to the vehicle controller. In this way, the vehicle controller uses the double solenoid valve with a neutral position to act on the double-acting cylinder 4.

[0028] Furthermore, a lock cylinder flap 2 is provided on the outside of the lock cylinder lever 3, which covers the keyhole for convenience and aesthetics.

[0029] The fixed base 8 is connected to the lock body.

[0030] The working principle of this utility model is as follows:

[0031] The unlocking flap 1 is operated, and its rotation along the central axis causes the unlocking lever 7 to move up and down. The unlocking lever 7 may or may not act on the locking / unlocking cam 6. When it acts on the locking / unlocking cam 6, the drive block 19 on the locking / unlocking cam 6 drives the unlocking gear 9 to rotate, which in turn pulls the unlocking lever 10 to swing, thereby unlocking the door locking mechanism and the locks on the vehicle body. It should be noted that the unlocking lever 10 is part of the bus and is not the protected object of this utility model.

[0032] Figure 2 In the locked state, the lock / unlock cam 6 is in the position shown in the figure. At this time, the downward movement of the unlock lever 7 cannot drive the lock / unlock cam 6 and the unlock gear 9 to move, and therefore cannot unlock.

[0033] Figure 3 In the unlocked state, the locking / unlocking cam 6 is in the position shown in the figure. At this time, the unlocking lever 7 moves downward to contact the locking / unlocking cam 6 and transmits the force to the unlocking gear 9. The unlocking gear 9 drives the unlocking lever 10 to unlock the hatch.

[0034] During operation, the lever 12 of the lock cylinder lever 3 drives the double-acting cylinder 4 to move left and right, which in turn drives the motion conversion mechanism 5 and transmits it to the locking / unlocking cam 6, realizing the two positions of the locking / unlocking cam 6 in Figures 2 and 3.

[0035] The double-acting cylinder 4 is equipped with a double solenoid valve, which is connected to the vehicle controller. Thus, the vehicle controller uses the double solenoid valve with a neutral position to act on the double-acting cylinder 4, ensuring that after the cylinder reaches its position, there is no pressure difference on either side of the piston rod, i.e., a follow-up state (meaning that the output shaft of the double-acting cylinder 4 moves left and right without the need for a key to turn, causing the motion conversion mechanism 5 to rotate, and finally driving the locking / unlocking cam 6 to rotate). Alternatively, opening the lock cylinder flap 2 and inserting the key causes the lock cylinder lever 3 to rotate, which in turn drives the double-acting cylinder 4 to move left and right, ultimately transmitting the movement to the locking / unlocking cam 6 to lock or unlock.

[0036] In addition, because the lock cylinder lever 3 has a long hole and the double-acting cylinder 4 is in a follow-up state, it ensures that the key unlocking / locking and the central control cylinder unlocking / locking do not interfere with each other, realizing the convenience of using the bus door in multiple scenarios.

[0037] Therefore, the purpose of this utility model is to improve the ease of use of the hatch lock, which can be unlocked / locked with a key, and can also be unlocked / locked pneumatically; and the two unlocking / locking methods do not interfere with each other. Compared with other hatch locks, it can additionally achieve: ① unlocking with the key and then locking with the pneumatic central control; ② locking with the key and then unlocking with the pneumatic central control; ③ unlocking with the pneumatic central control and then locking with the key; ④ locking with the pneumatic central control and then unlocking with the key.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A pneumatic cabin door lock, characterized by: The unlocking flap (1) is fixedly connected with an unlocking lever arm (7) on the inner side, and the unlocking lever arm (7) is arranged correspondingly with the locking / unlocking cam (6). The lock core lever (3) connected with the key is connected with a lever (12), the lever (12) is connected with the double-acting cylinder (4), the other end of the double-acting cylinder (4) is connected with the locking / unlocking cam (6) through a motion conversion mechanism (5), and the locking / unlocking cam (6) is in transmission connection with the unlocking gear (9).

2. A pneumatic cabin door lock according to claim 1, characterized in that: The lever (12) is provided with a long hole, and the double-acting cylinder (4) is provided with a first protruding rod (11) located in the long hole.

3. A pneumatic door lock as defined in claim 1, wherein: The motion conversion mechanism (5) comprises a rotating part (13), and the rotating part (13) is provided with a groove (14) and a protruding handle (15), wherein the groove (14) is connected with a second protruding rod (16), and the second protruding rod (16) is fixed on the output shaft of the double-acting cylinder (4); the protruding handle (15) is connected with the locking / unlocking cam (6).

4. A pneumatic door lock as defined in claim 3, wherein: The locking / unlocking cam (6) comprises a cam rotating disc (17), and the cam rotating disc (17) is provided with a pawl (18) and a driving block (19), wherein the pawl (18) is connected with the protruding handle (15) of the motion conversion mechanism (5); the driving block (19) is arranged opposite to the unlocking lever arm (7), when the driving block (19) is rotated to below the unlocking lever arm (7), the up-down movement of the unlocking lever arm (7) will touch the driving block (19); when the driving block (19) is not below the unlocking lever arm (7), the up-down movement of the unlocking lever arm (7) cannot touch the driving block (19).

5. A pneumatic door lock as defined in claim 1, wherein: The unlocking gear (9) comprises two unlocking gears meshing with each other, and the unlocking gear (9) is connected with an unlocking pull rod (10).

6. A pneumatic door lock as defined in claim 1, wherein: The double-acting cylinder (4) is provided with a double-connection electromagnetic valve connected with the vehicle controller.

7. A pneumatic door lock as defined in claim 1 wherein: The lock core flap (2) is arranged on the outer side of the lock core lever (3).

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