Heavy semi-automatic door lock device
By designing a heavy-duty semi-automatic door lock device on special vehicles, using a wedge surface and a wedge handle and a return spring, the problem of low reliability of automatic door locks and difficulty in unlocking manual door locks is solved, and the door lock effect with light handling and high reliability is achieved.
Patent Information
- Application Number
- CN202421951096.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The automatic door locks of existing special vehicles have complex structure and low reliability. The manual door lock opening control force is too large, which makes it difficult to open the door.
The heavy-duty semi-automatic door lock device is adopted, including a door panel, sleeve seat and wedge handle. The power reversal is achieved through the cooperation of the wedge surface and the wedge handle, and the reliable reset of the lock tongue is achieved by combining the return spring, and the lever principle is used to achieve light handling of the handle.
It realizes a door lock device with simple structure, high reliability and small space occupancy, which is suitable for the sealing and locking needs of special vehicles.
Smart Images
Figure CN223227212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a heavy-duty semi-automatic door locking device. Background Art
[0002] Currently, hatch locks for special vehicles in China primarily utilize automatic and manual locks. Automatic locks typically utilize hydraulic or electric actuation, resulting in complex structures, excessive space requirements, and low reliability. Manual locks offer a simpler structure, smaller footprint, and convenient layout, but they can be difficult to open due to the high operating force. Summary of the Invention
[0003] In order to solve the above technical problems, the utility model provides a heavy-duty semi-automatic door locking device applied to special vehicles with simple structure and high reliability.
[0004] The technical solution of the utility model for solving the above technical problems is: a heavy-duty semi-automatic door lock device, including a door panel, a door frame, a sleeve seat and a wedge-shaped handle, the door panel is provided with a limit seat, the door frame is provided with a sleeve seat, a stepped hole is provided in the sleeve seat, a pull rod is provided in the sleeve, a lock tongue is provided at the front end of the pull rod, the front end of the lock tongue is inserted into the limit seat, a return spring is sleeved in the middle of the pull rod, one end of the return spring is tightly pressed on the lock tongue, and the other end of the return spring is in contact with the step surface of the stepped hole, the rear end of the pull rod is connected to the wedge-shaped handle, and a wedge-shaped surface is provided at the end of the sleeve away from the lock tongue, and the wedge surface cooperates with the wedge-shaped part of the wedge-shaped handle to realize power reversing.
[0005] The above-mentioned heavy-duty semi-automatic door lock device has a cylindrical protrusion at the front end of the pull rod and a groove matching the cylindrical protrusion at the rear end of the lock tongue. The cylindrical protrusion is inserted into the groove and can rotate in the groove. The pull rod and the lock tongue achieve linkage and power reversing through the cylindrical protrusion and the groove.
[0006] In the heavy-duty semi-automatic door lock device, the lock tongue is provided with a protrusion, and the sleeve is provided with a guide groove for the protrusion to pass through at one end close to the lock tongue.
[0007] In the above-mentioned heavy-duty semi-automatic door lock device, a rotatable pin is provided on the limit seat to achieve rolling friction between the lock tongue and the door panel.
[0008] The front end of the heavy-duty semi-automatic door lock device is wedge-shaped.
[0009] The beneficial effects of the utility model are as follows: the wedge-shaped surface of the sleeve is matched with the wedge-shaped part of the wedge-shaped handle to realize power reversing, and the structure is simple; a reset spring is used to reset the lock tongue, and the reliability is high; the lever principle is used to realize easy operation of the handle; the utility model occupies a small space and is suitable for use on various special vehicles and special equipment that have high requirements for hatch door sealing and locking. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 This is the installation intention of this utility model.
[0011] Figure 2 It is a structural diagram of the present utility model.
[0012] Figure 3 This is a schematic structural diagram of the sleeve seat of the present utility model.
[0013] Figure 4 This is a schematic diagram of the pull rod structure of the present utility model.
[0014] Figure 5 This is a schematic diagram of the lock tongue structure of the present utility model.
[0015] Figure 6 This is a schematic diagram of the limit seat structure of the utility model. DETAILED DESCRIPTION
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] like Figure 1-Figure 3 As shown, a heavy-duty semi-automatic door lock device includes a door panel 1, a door frame 2, a sleeve seat 4 and a wedge-shaped handle 5. The door panel 1 is provided with a limit seat 3, the door frame 2 is provided with a sleeve seat 4, a stepped hole is provided in the sleeve seat 4, a pull rod 7 is provided in the sleeve, a lock tongue 8 is provided at the front end of the pull rod 7, the front end of the lock tongue 8 is inserted into the limit seat 3, the front end of the lock tongue 8 is wedge-shaped, a return spring 6 is sleeved in the middle of the pull rod 7, one end of the return spring 6 is tightly pressed on the lock tongue 8, and the other end of the return spring 6 is in contact with the step surface of the stepped hole, the rear end of the pull rod 7 is connected to the wedge-shaped handle 5 through a pin 9, and a wedge-shaped surface is provided at the end of the sleeve away from the lock tongue 8, and the wedge surface cooperates with the wedge-shaped part of the wedge handle 5 to realize power reversing.
[0018] like Figure 4 、 Figure 5 As shown, the front end of the pull rod 7 is provided with a cylindrical protrusion 11, and the rear end of the lock tongue 8 is provided with a groove 12 that matches the cylindrical protrusion 11. The cylindrical protrusion 11 is inserted into the groove 12 and can rotate in the groove 12. The pull rod 7 and the lock tongue 8 achieve linkage and power reversing through the cylindrical protrusion 11 and the groove 12.
[0019] like Figure 2 、 Figure 5 As shown, the lock tongue 8 is provided with a protrusion 13, and the sleeve is provided with a guide groove 14 for the protrusion 13 to pass through at one end close to the lock tongue 8.
[0020] like Figure 6As shown, a rotatable pin shaft 10 is provided on the limiting seat 3 for achieving rolling friction between the lock tongue 8 and the door panel 1 .
[0021] The working process of this utility model is:
[0022] Door lock closing: When the door is closed, the limit seat 3 set on the door hits the lock tongue 8 with a wedge-shaped surface on the door frame 2, causing the lock tongue 8 to enter the sleeve seat 4. When the upper end surface of the limit seat 3 passes over the lock tongue 8, the lock tongue 8 is reset and inserted into the limit seat 3 under the action of the reset spring 6 to complete the locking of the door.
[0023] Door lock is opened: rotate the wedge-shaped handle 5 from top to bottom, the rotation angle is 180°, and the rotation direction is perpendicular to the axis of the sleeve seat 4. Under the action of the wedge-shaped surface of the sleeve seat 4, the wedge-shaped handle 5 drives the pull rod 7 and the lock tongue 8 to slide out of the limit seat 3, and the door can be unlocked.
Claims
1. A heavy-duty semi-automatic door locking device, characterized by: It includes a door panel, a door frame, a sleeve seat and a wedge-shaped handle. The door panel is provided with a limit seat, the door frame is provided with a sleeve seat, a stepped hole is provided in the sleeve seat, a pull rod is provided in the sleeve, a lock tongue is provided at the front end of the pull rod, the front end of the lock tongue is inserted into the limit seat, a return spring is sleeved in the middle of the pull rod, one end of the return spring is tightly pressed on the lock tongue, and the other end of the return spring is in contact with the step surface of the stepped hole. The rear end of the pull rod is connected to the wedge-shaped handle, and a wedge-shaped surface is provided at the end of the sleeve away from the lock tongue. The wedge surface cooperates with the wedge-shaped part of the wedge-shaped handle to realize power reversing.
2. The heavy-duty semi-automatic door locking device according to claim 1, characterized in that: The front end of the pull rod is provided with a cylindrical protrusion, and the rear end of the lock tongue is provided with a groove matching the cylindrical protrusion. The cylindrical protrusion is inserted into the groove and can rotate in the groove. The pull rod and the lock tongue achieve linkage and power reversing through the cylindrical protrusion and the groove.
3. The heavy-duty semi-automatic door locking device according to claim 2, characterized in that: The lock tongue is provided with a protrusion, and the sleeve is provided with a guide groove for the protrusion to pass through at one end close to the lock tongue.
4. The heavy-duty semi-automatic door locking device according to claim 1, characterized in that: The limit seat is provided with a rotatable pin shaft for achieving rolling friction between the lock tongue and the door panel.
5. The heavy-duty semi-automatic door locking device according to claim 1, characterized in that: The front end of the lock tongue is wedge-shaped.