Heavy-Cassette sliding door auxiliary lock

Abstract

The utility model discloses a heavy Cassegrain sliding door auxiliary lock which comprises a locking assembly connected with a door leaf and a lock ring used for being connected with a vehicle body, the locking assembly comprises a lock hook and a pawl, the lock hook, the pawl and the door leaf are rotationally connected, the tail of the lock hook is connected with a spring, the back side of the lock hook is provided with a groove, the pawl is located on the back side of the lock hook, and the tail of the pawl is connected with an electromagnet. The door leaf is closed, the lock hook makes contact with the lock ring and is pushed by the lock ring to rotate to hook the lock ring, the pawl is pushed by the electromagnet, and the front end is clamped into a groove in the back side of the lock hook. The auxiliary lock is additionally arranged on the door leaf, when the door leaf is closed, the auxiliary lock is locked, constraint between the door leaf and a vehicle body is increased, the door leaf is more stable when the vehicle runs, abnormal sound generated by shaking of the door leaf is avoided, and the safety of the vehicle during high-speed running is improved.

Description

Technical Field

[0001] This utility model relates to a locking device, and more particularly to an auxiliary lock for a heavy-duty truck sliding door. Background Technology

[0002] Electric sliding doors offer superior sealing and increased passenger capacity, leading to their widespread use in urban public transportation systems and improved passenger comfort and safety. Due to their superior sealing performance and energy-saving advantages, electric sliding doors are also used in special vehicles such as heavy-duty trucks. However, the operating environments of urban buses and special vehicles are completely different: intercity heavy-duty trucks travel at speeds exceeding 60 km / h on highways, while special vehicles face harsher road conditions with high requirements for vibration and impact. Compared to urban bus door systems, the door panels of special vehicles produce significantly more rattling noise due to door movement. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide an auxiliary lock for heavy-duty truck sliding doors that increases the constraint between the door leaf and the vehicle body.

[0004] Technical solution: The present invention relates to a heavy-duty truck sliding door auxiliary lock, comprising a locking assembly connecting the door leaf and a locking ring for connecting the vehicle body. The locking assembly includes a locking hook and a pawl, which are rotatably connected to the door leaf. A spring is connected to the tail of the locking hook, and a groove is provided on its back side. The pawl is located on the back side of the locking hook, and an electromagnet is connected to the tail of the pawl. When the door leaf is closed, the locking hook contacts the locking ring and is pushed to rotate by the locking ring, hooking the locking ring. The pawl is pushed by the elastic force of the electromagnet, and its front end is engaged in the groove on the back side of the locking hook.

[0005] Preferably, the locking hook and pawl are rotatably connected to the door leaf via a fixed plate, a bracket, and the door leaf, with the locking hook and pawl located between the fixed plate and the bracket, and the two ends of the spring connected to the bracket and the locking hook, respectively.

[0006] Preferably, the electromagnet and the pawl are located on opposite sides of the bracket, and the electromagnet is connected to the tail of the pawl via a connecting plate.

[0007] Preferably, the heavy-duty truck sliding door auxiliary lock further includes a manual unlocking component, which includes a rotating shaft perpendicular to the rotation axis of the pawl, and a lever for pushing the pawl to rotate is provided in the middle of the rotating shaft.

[0008] Preferably, a roller is connected to the lever, and the roller is located below the connecting plate. The lever pushes the pawl to rotate via the roller and the connecting plate, moving it away from the groove on the back side of the locking hook.

[0009] Preferably, a handle is connected to the end of the rotating shaft.

[0010] Preferably, the locking assembly is provided with a cover, and the cover has an opening for the locking ring to pass through.

[0011] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. Reduce door shaking: An auxiliary lock is added to the door. When the door is closed, the auxiliary lock is locked, which increases the constraint between the door and the vehicle body, making the door more stable when the vehicle is running, avoiding abnormal noise caused by door shaking, and improving the safety of the vehicle when running at high speed; 2. It has two unlocking methods, electric and manual, to ensure timely and effective unlocking. Attached Figure Description

[0012] Figure 1 A schematic diagram showing the connection structure between the auxiliary lock and the door leaf of a heavy-duty truck sliding door;

[0013] Figure 2 A first-person view structural diagram of the auxiliary lock for the sliding door of a heavy-duty truck.

[0014] Figure 3 A schematic diagram of the second-view structure of the auxiliary lock for the sliding door of a heavy-duty truck;

[0015] Figure 4 A third-view structural diagram of the auxiliary lock for a heavy-duty truck sliding door;

[0016] Figure 5 Exploded view of the locking assembly structure of the auxiliary lock for the sliding door of a heavy-duty truck;

[0017] Figure 6 A schematic diagram illustrating the locking and unlocking principle of the auxiliary lock for the sliding door of a heavy-duty truck. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 5 The auxiliary lock's overall structure consists of a locking assembly 2, which mainly comprises a lock hook 11, a pawl 9, and an electromagnet 5. The lock hook 11, pawl 9, and fixing plate 10 are rotatably connected. The fixing plate 10 is connected to the door leaf. A spring 7 is connected to the tail of the lock hook 11, and a groove is provided on its back side. The pawl 9 is located on the back side of the lock hook 11, and its tail is connected to the electromagnet 5. The lock ring 17 is connected to the vehicle body. When the door leaf is closed, as... Figure 6 The door leaf moves the locking assembly 2, the locking hook 11 contacts the locking ring 17 and is pushed by the locking ring 17 to overcome the tension of the spring 7 and rotate, hooking the locking ring 17. The pawl 9 is pushed by the elastic force of the electromagnet 5. The front end of the pawl 9 is inserted into the groove on the back of the locking hook 11, preventing the locking hook 11 from being pulled back by the spring 7 and releasing the locking ring 17, thereby increasing the door leaf restraint and reducing door leaf noise.

[0020] When unlocking, electromagnet 5 is energized, which drives pawl 9 to rotate and leave the groove on the back of lock hook 11. Lock hook 11 is pulled by spring 7 to rotate, releasing lock ring 17, and the door can slide freely.

[0021] The surfaces of the locking hook 11 and the pawl 9 are treated with sulfur, carbon, and nitrogen co-infiltration, which gives them good wear resistance.

[0022] The fixed plate 10 is connected to the bracket 6. The locking hook 11 and the pawl 9 are located between the fixed plate 10 and the bracket 6 to increase stability. The end of the spring 7 away from the locking hook 11 is connected to the bracket 6. The electromagnet 5 and the locking hook 11 are located on opposite sides of the bracket 6 to reduce the overall volume of the auxiliary lock. The electromagnet 5 and the pawl 9 are connected by a connecting plate 8. The connecting plate 8 is a U-shaped piece. The upper side plate is connected to the pawl 9, and the lower side plate is connected to the electromagnet 5. The connecting plate 8 can span the bracket 6.

[0023] The auxiliary lock also includes a manual unlocking component 3, which mainly consists of a rotating shaft 12. The rotating shaft 12 is perpendicular to the rotation axis of the pawl 9. Handles are connected to both ends of the rotating shaft 12, which can drive the rotating shaft 12 to rotate. A lever 14 is connected to the middle of the rotating shaft 12. The lever 14 is used to push the pawl 9 to rotate, so that the pawl 9 is away from the groove on the back side of the lock hook 11. A roller 13 is connected to the lever 14. The roller 13 is located below the connecting plate 8 and can push the pawl 9 to rotate through the connecting plate 8. By setting the roller 13 and the connecting plate 8, the contact area during the manual unlocking process is increased, making the manual unlocking process more stable. A reset torsion spring is connected to the rotating shaft 12, which drives the rotating shaft 12 to reset.

[0024] The locking assembly 2 and the manual unlocking assembly 3 are covered by a housing 1. They are installed on the door leaf via the housing 1, fasteners 4, and the door leaf. The housing 1 has an opening for the locking ring 17 to enter, so that the locking hook 11 can hook the locking ring 17. The end of the manual unlocking assembly 3 passes through the housing 1 to facilitate the connection of a handle or a special unlocking key.

[0025] Locking principle: When the locking hook 11 contacts the vehicle body locking ring 17 and rotates to a certain angle, the ratchet mechanism uses its self-locking principle to reset the pawl 9, thereby completing the locking.

[0026] Unlocking Principles: 1. Magnetic Unlocking: The tail of the pawl 9 is connected to the electromagnet 5. When the electromagnet 5 is energized, it drives the pawl 9 to rotate, causing the hook 11 and the pawl 9 to disengage from the self-locking state. The spring 7 connected to the tail of the hook 11 causes the hook 11 to instantly reset, thus unlocking. 2. Manual Unlocking: The manual unlocking mechanism is similar to a cam structure. The manual drive of the rotating shaft 12 causes the roller 13 at the highest point of the lever 14 to lift the connecting plate 8 between the pawl 9 and the electromagnet, causing the hook 11 and the pawl 9 to disengage from the self-locking state. The spring 7 connected to the tail of the hook 11 causes the hook 11 to instantly reset, thus unlocking.

Claims

1. A heavy duty door closer auxiliary lock characterised in that, The device includes a locking assembly (2) for connecting the door leaf and a locking ring (17) for connecting the vehicle body. The locking assembly (2) includes a locking hook (11) and a pawl (9). The locking hook (11), pawl (9) and door leaf are rotatably connected. The tail of the locking hook (11) is connected to a spring (7) and a groove is provided on the back side. The pawl (9) is located on the back side of the locking hook (11) and the tail of the pawl is connected to an electromagnet (5). When the door leaf is closed, the locking hook (11) contacts the locking ring (17) and is pushed to rotate by the locking ring (17), hooking the locking ring (17). The pawl (9) is pushed by the elastic force of the electromagnet (5) and its front end is inserted into the groove on the back side of the locking hook (11).

2. The auxiliary lock for a heavy duty truck roll-up door according to claim 1, wherein The locking hook (11) and pawl (9) are rotatably connected to the door leaf through the fixing plate (10), the bracket (6), and the locking hook (11) and pawl (9) are located between the fixing plate (10) and the bracket (6). The two ends of the spring (7) are respectively connected to the bracket (6) and the locking hook (11).

3. The auxiliary lock for a heavy duty truck roll-up door as recited in claim 2, wherein, The electromagnet (5) and the pawl are located on opposite sides of the bracket (6), and the electromagnet (5) is connected to the tail of the pawl (9) via a connecting plate (8).

4. The auxiliary lock for a heavy duty truck roll-up door according to claim 3, wherein The heavy-duty truck sliding door auxiliary lock also includes a manual unlocking component (3), which includes a rotating shaft (12). The rotating shaft (12) is perpendicular to the rotation axis of the pawl (9), and a paddle (14) is provided in the middle of the rotating shaft (12) for pushing the pawl (9) to rotate.

5. The auxiliary lock for a heavy duty roll-up door as recited in claim 4, wherein, The lever (14) is connected to a roller (13), which is located below the connecting plate (8).

6. The auxiliary lock for a heavy duty roll-up door as recited in claim 4, wherein, The handle is connected to the end of the rotating shaft (12).

7. The auxiliary lock for a heavy duty truck roll-up door as recited in claim 1, wherein, The locking assembly (2) is provided with a cover (1) on the outside, and the cover is provided with an opening for the locking ring (17) to pass through.

Images