A spring mechanical lock
By designing grooves, steps and bump structures on the lock tongue and lock core, switching between spring lock lock and mechanical lock is achieved, solving the problems of poor anti-theft performance of spring lock and inconvenient operation of mechanical lock, and providing a safe and convenient lock tool User experience.
Patent Information
- Application Number
- CN202010945064.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-09-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2040-09-10
AI Technical Summary
The existing spring locks have poor anti-theft performance and inconvenient operation, and the mechanical locks are inconvenient to use and complex installation.
A spring mechanical lock combining a spring lock and a mechanical lock is designed. By providing grooves and step structures at the lower part of the lock tongue, a bump on the top of the lock core is provided to cooperate with the lock tongue, and a rotary lock core is used to drive the lock tongue for limiting positioning. It realizes switching between spring locks and mechanical locks, providing a safe and convenient user experience.
It realizes convenient operation of spring locks during normal use, and switches to mechanical locks when anti-theft is required, improving safety and convenience of use.
Smart Images
Figure CN112031532B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of locks, in particular to a spring mechanical lock. Background Art
[0002] In the prior art, the locks of battery boxes generally have two forms: mechanical locks and spring locks. The mechanical lock controls the locking by rotating the lock core to drive the lock tongue to expand and contract. Its advantages are simple structure, stability, firmness, and good anti-theft performance. However, the main problem of mechanical locks in the application of battery boxes is that they are inconvenient to use. When installing the battery box, you need to operate with both hands. One hand controls the key to open the mechanical lock, and the other hand operates the battery box to place it in the preset installation position, and then lock the mechanical lock. The spring lock drives the lock tongue to expand and contract by rotating the lock core. At the same time, the lock tongue can also be retracted under the action of external force and reset by spring force. The advantage of the spring lock is that it is easy to operate. When installing the battery box, you only need to operate with one hand. The battery box presses the lock tongue, and the lock tongue contracts under the action of external force. When the battery box reaches the preset installation position, the spring drives the lock tongue to reset and lock the battery box. However, the spring lock also has the following problems: 1. The anti-theft performance is not good. The spring lock lock tongue is easy to overcome the spring elastic force and retract under the action of external force; 2. The locking performance is not good. The electric vehicle will vibrate during driving, and the vibration will cause the battery box to detach from the lock tongue.
[0003] Chinese patent 201220010030.7 discloses a spring mechanical lock, wherein a retaining spring is arranged at the upper end of the lock tongue, an upper retaining ring that can abut against the inner wall of the top end of the cavity is arranged at the middle end of the pressure rod, a lower retaining ring that covers the lock tongue is arranged on the inner wall of the lower end of the cavity, an upper spring is arranged between the retaining spring and the upper retaining ring, a lower spring is arranged between the retaining spring and the lower retaining ring, gaskets are arranged at both ends of the upper spring and the lower spring, and the stiffness coefficient of the lower spring is greater than the stiffness coefficient of the upper spring. This patent controls opening and closing through the upper spring and the lower spring, and this patent only solves the control problem of the mechanical lock, and cannot have the advantages of both the mechanical lock and the spring lock. Summary of the invention
[0004] The purpose of the present invention is to solve the problem that spring locks are not safe enough and mechanical locks are inconvenient to operate, and to provide a spring mechanical lock which can combine the advantages of spring locks and mechanical locks.
[0005] In order to achieve the above purpose, a spring mechanical lock is designed, including a lock shell, a lock core, a lock tongue and a spring. An L-shaped cavity is provided in the lock shell, and the lock core and the lock tongue cooperate in the cavity. One end of the spring is connected to the inner wall of the lock shell cavity, and the other end of the spring is connected to the lock tongue. It is characterized in that a groove is provided at the lower part of the lock tongue, and a step structure formed by a notch is provided on one side of the groove, and a convex block is provided on the top of the lock core to cooperate with the lock tongue: when in the 0 position, the convex block on the top of the lock core is arranged in the lock tongue groove, and the convex block has no limit on the lock tongue, and the lock tongue is extended and retracted under the action of external force and spring reset force; based on the 0 position, the lock core is rotated forward, and the convex block on the top of the lock core abuts against the step structure on one side of the lock tongue groove, driving the lock tongue to move inward and compress the spring, and conversely, under the action of the spring reset force, the lock tongue is driven to move outward, and it is a spring lock at this time; based on the 0 position, the lock core is rotated reversely, and the convex block on the top of the lock core rotates from the other side of the lock tongue groove to the rear end of the lock tongue to limit the lock tongue. At this time, it is switched to a mechanical lock, and the lock tongue cannot be extended and retracted under the action of external force.
[0006] Preferably, a notch is provided on the lock core, and the spring ball locking screw is mounted on the lock housing to cooperate with the notch on the lock core.
[0007] Preferably, when the lock core is rotated 90° in the positive direction based on the 0 position, the retraction stroke of the lock tongue reaches the maximum value, and the spring ball locking screw pops out to cooperate with the notch on the lock core to provide the positioning force for the lock tongue in the spring locked state.
[0008] Preferably, the lock housing is also provided with a lock tongue positioning screw and a lock core positioning screw.
[0009] Preferably, the lock core is installed in the lock housing through a lock sleeve.
[0010] Preferably, the protrusion on the top of the lock core is an arc-shaped protrusion.
[0011] Preferably, the forward rotation may be either clockwise or counterclockwise, and the reverse rotation is opposite to the forward rotation and may be either counterclockwise or clockwise.
[0012] Compared with the prior art, the advantages of the present invention are: combining the safety of a mechanical lock with the convenience of a spring lock; in normal use, like a spring lock, it can be retracted when subjected to external force; when anti-theft is required, after the object is installed, the key needs to be rotated 180 degrees counterclockwise, and then the key can be pulled out to activate the anti-theft function. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is an exploded view of the present invention;
[0014] Figure 2 It is a schematic diagram of the assembly of the present invention;
[0015] Figure 3 It is the schematic diagram of the 0-position assembly of the present invention;
[0016] Figure 4 This is the assembly front view of the present invention rotated 90° clockwise at position 0;
[0017] Figure 5 This is a three-dimensional assembly diagram of the present invention rotated 90° clockwise at position 0;
[0018] Figure 6 This is the assembly front view of the present invention rotated 180° counterclockwise at position 0;
[0019] Figure 7 This is a stereoscopic assembly diagram of the present invention rotated 180° counterclockwise at position 0;
[0020] Including: 1. Lock case 2. Lock core 3. Lock tongue 4. Key 5. Spring 6. Lock sleeve 7. Ring label 8. Lock core positioning screw 9. Spring ball fastening screw 10. Lock tongue positioning screw. DETAILED DESCRIPTION
[0021] The present invention is further described below in conjunction with the accompanying drawings, and the structure and principle of the present invention are very clear to people in the field. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0022] Example 1, see Figure 1 and Figure 2 The present invention is a spring mechanical lock, and the specific structure is as follows:
[0023] The invention comprises a lock case 1, a lock core 2, a lock tongue 3 and a spring 5. The lock case 1 is provided with an L-shaped cavity, the lock core 2 and the lock tongue 3 cooperate in the cavity, one end of the spring 5 is connected to the inner wall of the cavity of the lock case 1, and the other end of the spring 5 is connected to the lock tongue 3. A groove is provided at the lower part of the lock tongue 3, and a step structure formed by a notch is provided on one side of the groove. An arc-shaped protrusion is provided on the top of the lock core 2 to cooperate with the lock tongue 3. The lock core 2 is installed in the lock case 1 through a lock sleeve 6. A notch is also provided on the lock core 2. A spring ball screw 9 is installed on the lock case 1 to cooperate with the notch on the lock core 2. The lock case 1 is also provided with a lock tongue positioning screw 10 and a lock core positioning screw 8.
[0024] Example 2, see Figure 3 , is a schematic diagram of the assembly of the spring 5 mechanical lock of the present invention in the initial position, which is called position 0. At position 0, the arc-shaped protrusion on the top of the lock core 2 is set in the groove of the lock tongue 3. The arc-shaped protrusion has no limit on the lock tongue 3, and the key 4 can be pulled out. The lock at this time is the same as the ordinary spring 5 lock. The lock tongue 3 can be retracted under the action of external force. When the external force is gone, the lock tongue 3 will automatically rebound due to the force of the spring 5, achieving the purpose of locking. However, this state is not anti-theft.
[0025] Example 3, see Figure 4 and Figure 5 The spring 5 mechanical lock of the present invention rotates 90° clockwise at position 0. In this state, the spring 5 is locked and the key 4 cannot be pulled out. The lock core 2 will drive the lock tongue 3 to retract during the rotation process. At this time, the retraction stroke of the lock tongue 3 reaches the maximum value, and the spring ball screw 9 pops out to cooperate with the groove at the corresponding position of the lock core 2. The lock tongue 3 will be fixed at this 90° position. You don't need to twist the key 4 with your hands all the time, which is convenient to use. In this state, gently twist it counterclockwise to rebound, which is very flexible.
[0026] Example 4, see Figure 6 and Figure 7 , the spring 5 mechanical lock of the present invention rotates 180° counterclockwise at position 0, which is the mechanical lock state. At this time, the arc-shaped protrusion on the top of the lock core 2 rotates from the other side of the groove of the lock tongue 3 to the rear end of the lock tongue 3 to limit the lock tongue 3. In this state, the key 4 can be pulled out. During this movement, since the lock core 2 and the lock tongue 3 are not in contact, they will be twisted to the 180° position very smoothly. At this position, the lock core 2 will contact the lock tongue 3. Under the action of the lock tongue positioning screw 10, the lock tongue 3 will not move outward. Similarly, when it is rotated counterclockwise to 180°, the spring ball screw 9 pops out and cooperates with the groove at the corresponding position of the lock core 2, which will make a sound, and there will be a vibration on the hand. Therefore, when it is rotated counterclockwise to 180 degrees, it reaches the limit value. At this time, the spring 5 lock switches to the mechanical lock function, and the lock tongue 3 cannot be retracted, achieving the purpose of anti-theft.
Claims
1. A spring mechanical lock, comprising a lock housing (1), a lock core (2), a lock tongue (3) and a spring (5), wherein an L-shaped cavity is provided in the lock housing (1), the lock core (2) and the lock tongue (3) cooperate in the cavity, one end of the spring (5) is connected to the inner wall of the lock housing cavity, and the other end of the spring (5) is connected to the lock tongue (3), characterized in that The lower part of the locking tongue (3) is provided with a groove, and one side of the groove is provided with a step structure formed by a notch. The top of the lock core (2) is provided with a protrusion which cooperates with the lock tongue (3): When in position 0, the top projection of the lock core (2) is disposed in the groove of the lock tongue (3), the projection does not limit the lock tongue (3), and the lock tongue (3) retracts and contracts under the action of external force and the spring return force; Based on the 0 position, the lock core is rotated forward, and the top protrusion of the lock core (2) abuts against the step structure on one side of the groove of the lock tongue (3), driving the lock tongue (3) to move inward and compress the spring. Conversely, under the action of the spring return force, the lock tongue (3) is driven to move outward, and the spring lock is achieved at this time; Based on the 0 position, the lock core is rotated in the reverse direction, and the top protrusion of the lock core (2) is rotated from the other side of the groove of the lock tongue (3) to the rear end of the lock tongue (3), thereby limiting the lock tongue (3). At this time, the lock is switched to a mechanical lock, and the lock tongue (3) cannot be extended or retracted under the action of external force.
2. A spring mechanical lock as claimed in claim 1, characterized in that The lock core (2) is provided with a notch, and the spring ball locking screw (9) is mounted on the lock housing (1) to match the notch on the lock core (2).
3. A spring mechanical lock as claimed in claim 1, characterized in that When the lock core is rotated 90° in the positive direction based on the 0 position, the retraction stroke of the lock tongue (3) reaches the maximum value, and the spring ball locking screw (9) pops out to cooperate with the notch on the lock core (2) to provide the positioning force for the lock tongue (3) in the spring locked state.
4. A spring mechanical lock as claimed in claim 1, characterized in that The lock housing (1) is also provided with a lock tongue positioning screw (10) and a lock core positioning screw (8).
5. A spring mechanical lock as claimed in claim 1, characterized in that The lock core (2) is installed in the lock housing (1) through a lock sleeve (6).
6. A spring mechanical lock as claimed in claim 1, characterized in that The protrusion on the top of the lock core (2) is an arc-shaped protrusion.