Internal transmission mechanism of crank-slider type motor home lock
By using a crank slider transmission mechanism in the RV lock, the motor drive crank is used to connect to the lock tongue to achieve free opening and closing of the lock tongue, and the electronic mechanical synchronization is achieved through gear transmission, which solves the problems of complex structure and unstable movement of the traditional mechanical lock, and improves the reliability and service life of the RV lock.
Patent Information
- Application Number
- CN202422021301.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The swing rod mechanism of traditional mechanical locks has many connecting parts and complex structures, which leads to complex assembly and easy failure of movement, resulting in the problem of the motor slewing lock tongue not moving.
The internal transmission mechanism of the crank slider type RV lock is adopted. By providing a motor-driven crank in the housing, the crank and the connecting rod are connected to the lock tongue to achieve free opening and closing movement of the lock tongue, and synchronizing electronic unlocking and mechanical unlocking through the meshing transmission between the second gear and the first gear.
It simplifies the structure of mechanical parts, improves the reliability and stability of movement, extends the service life of the vehicle lock, and realizes the synchronization of electronic and mechanical unlocking.
Smart Images
Figure CN223151841U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of RV locks, in particular to an internal transmission mechanism of a crank-slider type RV lock. Background Technique
[0002] An RV lock is a lock used to protect the safety of an RV. It can prevent unauthorized personnel from entering the interior of the RV or stealing the RV. The RV locks on the market use a mechanical lock as the driving force, which is connected to the lock tongue through a gear link to drive the lock tongue to move linearly to complete locking and unlocking. It is a swing rod-slider mechanism. The electronic lock is that the motor is meshed with the mechanical key gear through a gear to realize the linkage between the motor and the mechanical key.
[0003] The swing rod mechanism of the traditional mechanical lock has many connecting parts and a relatively complex structure, resulting in more complex assembly, numerous mating dimensions, and easy movement failure, such as the phenomenon that the motor rotates but the lock tongue does not move. Therefore, we propose an internal transmission mechanism of a crank-slider type RV lock to solve the problems mentioned above. Content of the Utility Model
[0004] The purpose of the utility model is to provide an internal transmission mechanism of a crank-slider type RV lock to solve the problems in the above-mentioned background technique that the swing rod mechanism of the traditional mechanical lock has many connecting parts and a relatively complex structure, resulting in more complex assembly, numerous mating dimensions, and easy movement failure, such as the phenomenon that the motor rotates but the lock tongue does not move.
[0005] To achieve the above purpose, the utility model provides the following technical solution: An internal transmission mechanism of a crank-slider type RV lock, including a housing;
[0006] It further includes:
[0007] A lock tongue, which is arranged inside the housing. A driving motor is arranged inside the housing. The upper end of the driving motor is connected with a first gear, and the motor drives the first gear to rotate. A crank is arranged at the upper end of the first gear. A connecting rod is arranged at the upper end of the lock tongue, and the other end of the connecting rod is connected with the other end of the crank.
[0008] Preferably, a second gear is arranged inside the housing, and the second gear is meshed and connected with the first gear.
[0009] Preferably, the connecting rod is connected with the lock tongue through a third coupling shaft, the connecting rod is connected with the crank through a second coupling shaft, and the crank is connected with the first gear through a first coupling shaft.
[0010] Preferably, a positioning pin is arranged outside the first coupling shaft, and the positioning pin is clamped and connected with the crank.
[0011] Preferably, the second gear is connected to the lock core.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0013] 1. By arranging a motor inside the housing, a crank is arranged at the upper end of the motor, and the crank is connected to the lock tongue through a connecting rod. The motor drives the crank to perform a rotary motion, and the crank-slider mechanism realizes the free opening and closing of the door lock. Different from the swing rod-slider mechanism on the market, it improves the reliability and smoothness of the mechanism movement and the service life of the vehicle lock, simplifies the number of mechanical parts and the structure of the parts, facilitates the assembly process and the part processing process, and the crank movement angle becomes smaller, improving the mechanical movement efficiency.
[0014] 2. By arranging a second gear, the second gear meshes and drives with the first gear, and the second gear is connected to the lock core. The second gear can be driven to rotate by a mechanical key, and the second gear drives the first gear to transmit power, opening and closing the lock tongue. When the motor drives the first gear to rotate, the second gear is driven to rotate synchronously through meshing connection, realizing the synchronization of electronic unlocking and mechanical unlocking. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic diagram before the opening of the present utility model;
[0016] Figure 2 is a schematic diagram during the opening process of the present utility model;
[0017] Figure 3 is a schematic diagram after the opening of the present utility model;
[0018] Figure 4 is an enlarged view of the structure at A of the present utility model;
[0019] In the figure: 1, motor; 2, first gear; 3, crank; 4, lock tongue; 5, connecting rod; 6, second gear; 7, first coupling shaft; 8, second coupling shaft; 9, third coupling shaft; 10, housing; 11, positioning pin. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0021] Please refer to Figures 1-4 , an embodiment provided by the present utility model: A crank-slider type internal transmission mechanism for a motorhome lock, including a housing 10;
[0022] It further includes:
[0023] The locking tongue 4 is arranged inside the housing 10. A driving motor 1 is arranged inside the housing 10. The upper end of the driving motor 1 is connected with a first gear 2, and the motor 1 drives the first gear 2 to rotate. A crank 3 is arranged at the upper end of the first gear 2. A connecting rod 5 is arranged at the upper end of the locking tongue 4, and the other end of the connecting rod 5 is connected with the other end of the crank 3.
[0024] The motor 1 rotates to drive the first gear 2 to rotate. The first gear 2 pushes the crank 3 to make a rotary motion. The locking tongue 4 is driven by the connecting rod 5 to make a linear motion, realizing the free opening and closing motion of the locking tongue 4. When the motor 1 rotates in reverse, the first gear 2 rotates in the reverse direction, and the crank 3 can be driven to drive the connecting rod 5 and the locking tongue 4 to retract.
[0025] Please refer to Figure 1 , a second gear 6 is arranged inside the housing 10, and the second gear 6 is meshed and connected with the first gear 2 to realize the meshing transmission between the gears.
[0026] Please refer to Figure 1 , the connecting rod 5 and the locking tongue 4 are connected by a third coupling shaft 9. The connecting rod 5 and the crank 3 are connected by a second coupling shaft 8. The crank 3 and the first gear 2 are connected by a first coupling shaft 7, which is used to movably connect the crank 3, the connecting rod 5 and the locking tongue 4.
[0027] Please refer to Figure 4 , a positioning pin 11 is arranged outside the first coupling shaft 7, and the positioning pin 11 is engaged with the crank 3, so that the first coupling shaft 7 will not rotate inside the crank 3.
[0028] Please refer to Figure 1 , the second gear 6 is connected with the lock core to facilitate mechanical unlocking.
[0029] Working principle: When the mechanical key does not move, the motor 1 rotates to drive the first gear 2 to rotate. The first gear 2 pushes the crank 3 to make a rotary motion. The locking tongue 4 is driven by the connecting rod 5 to make a linear motion, realizing the free opening and closing motion of the locking tongue 4. When the motor 1 rotates in reverse, the first gear 2 rotates in the reverse direction, driving the crank 3 to drive the connecting rod 5 and the locking tongue 4 to retract, opening the door lock. When the mechanical key rotates, the second gear 6 drives the first gear 2 to rotate to drive the crank 3 and the connecting rod 5 to move, realizing the opening and closing function of the locking tongue 4.
[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.
Claims
1. An internal transmission mechanism of a crank-slider type RV lock, comprising a housing (10); It is characterized in that: It further includes: A lock tongue (4), which is arranged inside the housing (10). A driving motor (1) is arranged inside the housing (10). The upper end of the driving motor (1) is connected to a first gear (2), and the motor (1) drives the first gear (2) to rotate. A crank (3) is arranged at the upper end of the first gear (2). A connecting rod (5) is arranged at the upper end of the lock tongue (4), and the other end of the connecting rod (5) is connected to the other end of the crank (3).
2. The internal transmission mechanism of a crank-slider type RV lock according to claim 1, characterized in that: A second gear (6) is arranged inside the housing (10), and the second gear (6) is meshed and connected with the first gear (2).
3. The internal transmission mechanism of a crank-slider type RV lock according to claim 1, characterized in that: The connecting rod (5) and the lock tongue (4) are connected by a third coupling shaft (9). The connecting rod (5) and the crank (3) are connected by a second coupling shaft (8). The crank (3) and the first gear (2) are connected by a first coupling shaft (7).
4. The internal transmission mechanism of a crank-slider type RV lock according to claim 3, characterized in that: A positioning pin (11) is arranged outside the first coupling shaft (7), and the positioning pin (11) is snap-fitted with the crank (3).
5. The internal transmission mechanism of a crank-slider type RV lock according to claim 2, characterized in that: The second gear (6) is connected to the lock core.