A mortise lock and method of locking and unlocking

Abstract

The application relates to a plug-in lock and a locking and unlocking method, and belongs to the field of vehicle connecting devices. The plug-in lock comprises a fixing block, a hook part arranged on the fixing block, a sliding block, a supporting block hingedly arranged on the sliding block, an elastic part arranged on the sliding block and used for pressing the supporting block into the hook part through elastic pressure, a stop block arranged on the side of the supporting block away from the hook part and used for preventing the supporting block from rotating and being unhooked, and a driving assembly comprising an unlocking lever used for resisting the stop block and an unlocking rod used for pushing the supporting block out of the hook part. The unlocking rod can switch positions on the side of the hook part close to the supporting block and the side of the hook part away from the supporting block, so as to realize unlocking and avoid unlocking. The technical scheme completely adopts a novel locking mechanism, discards various disadvantages of bolt locking, greatly reduces the equipment installation cost, and only mechanical hard locking can truly have high reliability.

Description

Technical Field

[0001] This invention relates to the field of vehicle connection device technology, and more specifically, to a locking and unlocking method. Background Technology

[0002] Traditional charging methods cannot meet the needs of electric vehicle users. With the promotion of electric vehicles, providing fast and safe energy replenishment has become a widely concerned issue. Currently, the mainstream solution is to use charging stations to charge electric vehicles. Fast charging generally requires 1-2 hours of charging time, which has a significant impact on battery life. If slow charging is used, it takes 6-10 hours, which is even longer and has become a challenge for the promotion of electric vehicles.

[0003] Another major direction in the rapid charging of electric vehicles is battery pack quick-swapping technology, which allows for rapid replacement of battery packs within battery swapping stations. Ordinary new energy electric vehicles cannot have their battery packs quickly removed and replaced. To achieve rapid battery pack replacement, a reliable battery pack electrical system, cooling system, and battery pack retaining components, such as battery pack locks, that can be quickly coupled and decoupled are required.

[0004] Existing battery swapping locks are complex in principle and subject to numerous constraints. Currently, battery pack retainers in new energy battery swapping vehicles on the market are mainly bolt-type or similar, supplemented by other types of locks. During the battery swapping process, the operating equipment replaces the battery pack of the new energy battery swapping vehicle. However, due to interference factors such as manufacturing tolerances and vehicle parking position deviations, the issue of positioning accuracy needs to be addressed. Furthermore, the disassembly and assembly must adhere to the working principles of bolts or other types of locks. As the complexity of disassembly and assembly increases, the success rate and reliability of battery swapping decrease.

[0005] Disadvantages of bolt-type unlocking. Taking bolts as an example, disassembly and assembly require solving many problems. First, the disassembly and assembly equipment must accurately locate the bolt. Common bolt heads have a hexagonal force-bearing surface. Besides locating the bolt's installation position, the angle of the bolt head's force-bearing surface must also be determined so that the disassembly / assembly tool can be parallel to the force-bearing surface of the bolt head, preventing excessive wear that could render the bolt unusable. Second, the disassembly / assembly tool needs to provide rotational power to remove the bolt. However, rotation alone is insufficient; as the bolt is unscrewed, the thread length changes, requiring corresponding displacement. Finally, after the bolt is fully removed, it must be prevented from falling out. Conversely, during bolt installation, appropriate devices must be in place to prevent the bolt from falling and to ensure it is aligned with the mounting hole.

[0006] Existing lock bodies require high manufacturing and assembly precision. Locking typically involves the bolt and latch engaging at a specific position. However, automotive battery packs are large and have numerous connection points with the vehicle body, necessitating multiple lock bodies to secure them. This also requires high manufacturing and assembly precision in the battery pack's retaining system to ensure multiple locks can reliably engage simultaneously in the correct positions. If the actual relative positions of the lock bodies deviate significantly from the preset optimal values, one lock may engage, restricting the battery pack's movement and preventing the remaining lock bodies from reaching their engaged positions. This is why, when using bolts to secure the battery pack, the bolt threads must be screwed in to the required torque to eliminate manufacturing and assembly deviations.

[0007] There is an urgent need for simple, reliable, and low-cost lock bodies. Based on the above, a retainer or lock body with a simple structure, reliable function, and the ability to replace bolts for fastening has significant practical value. Such a lock body can not only improve efficiency and reduce costs, but also greatly enhance the customer experience by simplifying the battery swapping process and reducing the time spent on battery swapping, making battery swapping as quick and efficient as refueling a gasoline car. Summary of the Invention

[0008] 1. The problem to be solved

[0009] In the existing technology, the rigid locking of the bolt and lock body structures makes it easy for multiple locks to be affected by the manufacturing errors of the vehicle and the on-board battery pack when locked simultaneously, resulting in some lock bodies failing due to inaccurate locking. The present invention provides a plug-in lock and a locking and unlocking method that uses a floating plug-in method to give the lock body tolerance in both vertical and lateral directions, enabling smooth locking.

[0010] 2. Technical Solution

[0011] To solve the above problems, the present invention adopts the following technical solution.

[0012] A locking mechanism includes a fixed block with a hook portion; a slider with a support block hinged to it; the slider also has an elastic portion for pressing the support block into the hook portion by elastic pressure; a stop block located on the side of the support block away from the hook portion for preventing the support block from rotating and disengaging; and a drive assembly including a release lever for disengaging the stop block and an unlocking lever for pushing the support block out of the hook portion; the unlocking lever can switch positions between the side of the hook portion near the support block and the side away from the support block to achieve unlocking and prevent unlocking.

[0013] Preferably, the hook has a locking groove located on the upper side of the hook and close to the side surface of the support block; the shape and size of the locking groove are adapted to the fitting part of the support block.

[0014] Preferably, the side of the hook portion below and near the support block has a guide portion so that the unlocking lever pushes the support block out of the hook portion through the guide portion.

[0015] Preferably, the slider is provided with a groove along the relative movement direction between the slider and the fixed block; the stop block is slidably installed in the groove and is pressed by a first compression spring provided in the groove towards the hinge direction of the stop block.

[0016] Preferably, the stop block passes through the groove in the middle and expands at the ends to prevent the stop block from coming out of the groove.

[0017] Preferably, the hooks are arranged in pairs, and a pair of support blocks are hinged together on the slider, and each of them cooperates with the hook on the opposite side; the end of the stop block that presses against the support block is a wedge-shaped structure with a wedge angle symmetrically inserted between the two support blocks; the release rod is inserted into the stop block along the gap between the two support blocks; the unlocking rods are arranged in pairs and are located on both sides of the release rod to cooperate with the support blocks on each side.

[0018] Preferably, the unlocking lever is slidably mounted on the frame and pressed against the stop block by a second compression spring on the frame; the unlocking lever is hinged to the frame.

[0019] Preferably, the unlocking lever and the release lever are connected by a tension spring.

[0020] Preferably, the performance of the elastic part, the second compression spring, and the tension spring, as well as the setting of the connection point, can enable the release rod to move downwards when the stop block presses against the release rod, and pull the unlocking rods on both sides through the tension springs, so that the unlocking rod rotates into the unlocking position between the hook and the support block; before the unlocking rod enters the unlocking position, the tension of the compressed release rod by the second compression spring exceeds the pressure of the stop block, and pushes the stop block and the elastic part upwards to the limit position.

[0021] An encryption / unlocking method comprising the lock structure found in any of the above-mentioned technical solutions.

[0022] 3. Beneficial effects

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] (1) Existing bolt-locking methods suffer from poor wear resistance and short equipment lifespan. Furthermore, the high precision requirements of threaded connections on both sides of the mechanism significantly increase the overall equipment cost. Cost control is a crucial consideration for emerging industries, and heavy asset investment will increasingly struggle to attract capital. Therefore, cost reduction through mechanism improvement is essential. On the other hand, product reliability is a fundamental requirement and crucial factor for winning new markets and increasing consumer acceptance, especially in the use of potentially hazardous equipment like vehicle battery packs, where reliability is paramount. This technical solution fully utilizes a novel locking mechanism, eliminating the various drawbacks of bolt-locking and significantly reducing equipment installation costs. Moreover, mechanical hard locking truly offers high reliability. In this technical solution, both the support block and hook are mechanically hard-locked. Combined with the protection of the stop block, symmetrical design to balance forces, and improved stress conditions, this technical solution boasts reliable reliability. Simultaneously, the ingenious mechanism design facilitates convenient locking and unlocking operations.

[0025] (2) Good locking tolerance. A vehicle's battery swapping system requires several pairs of locking mechanisms as retainers to ensure the battery pack is stably and securely installed. Due to vehicle manufacturing and assembly errors, locking mechanisms in different locations have installation errors. When one locking mechanism locks smoothly, the others often fail to lock properly. This technical solution uses a combination of a locking groove and a support block to achieve locking. As long as each part of the vehicle-side locking mechanism is within the hookable space of the locking groove, once the vehicle and the onboard battery pack lock together, the support block will eventually enter the locking groove to achieve locking. During the operation of the unlocking and release levers, as long as the release and unlocking levers can move within a certain range, there is no requirement for very precise alignment. This highly tolerant mechanism can largely ensure that each lock body can lock and unlock, avoiding failure due to a lock body not locking, which would increase the load on the remaining lock bodies and cause the entire retainer system to fail.

[0026] (3) Low cost. Besides the lower processing and assembly precision requirements due to its good tolerance, which saves costs, the processing cost of the structure itself is also relatively low. From a safety perspective, the number of lock bodies required in the retaining system should exceed the number of lock bodies capable of supporting the weight of the battery pack. For example, the load-bearing capacity of 6 lock bodies is just enough to support the weight of the battery pack, but in actual applications, 8 or more lock bodies are used to improve security. When each lock body has low processing and usage costs, the cost savings after mass production are considerable, and cost or profit margin is a crucial factor in determining whether market penetration is possible.

[0027] (4) It has a certain degree of guidance. The movement of the stop block in the slide groove has guidance, and the sliding of the release rod on the support column also has guidance and restriction. When the release rod hits the support block, it is simultaneously guided by the inclined guide surface on the lower side of the hook, and guided and limited by the protruding structure in the middle of the support block, etc. The above settings together reduce the accuracy requirements of the battery swapping mechanism in the battery swapping station, simplify the complex program of the control system, thereby reducing the cost of battery swapping, and also improving the reliability and success rate of battery swapping.

[0028] (5) Flexible and adaptable lock body installation. The slider and drive assembly can be installed on the vehicle end and the battery swapping platform respectively. Under complex vehicle structure boundary conditions, this reduces the difficulty of arranging the lock body and battery pack, improves the space utilization of the vehicle body, and increases the battery loading capacity. At the same time, it also increases the universality of the lock body on different vehicle models. Attached Figure Description

[0029] Figure 1 This is a schematic diagram illustrating the usage state of the present invention;

[0030] Figure 2 This is a schematic diagram of the unlocked state of the present invention;

[0031] Figure 3 This is a schematic diagram of the initial stage of the locked state of the present invention;

[0032] Figure 4 This is a schematic diagram of the locking state between the slider and the fixed block of the present invention;

[0033] Figure 5 This is an exploded view showing the mating relationship between the slider and the fixing block of the present invention;

[0034] Figure 6 This is a schematic diagram of the drive component structure of the present invention;

[0035] Figure 7 This is an exploded view of the drive component structure of the present invention.

[0036] In the picture:

[0037] 100. Fixing block; 101. Hook; 102. Locking groove; 103. Top of groove; 104. Guide part;

[0038] 200. Slider; 201. Support block; 202. Slide groove; 203. First compression spring; 204. Stop block; 205. Wedge block; 206. Cover; 207. Protrusion;

[0039] 300. Drive assembly; 301. Release lever; 302. Unlock lever; 303. Frame; 304. Tension spring; 305. Second compression spring; 306. Support column; 307. Frame; 308. Third compression spring. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to embodiments.

[0041] This application document specifies that the upper and lower positions are based on the upper and lower positions of a vehicle in normal use.

[0042] Example 1

[0043] like Figures 4-5 As shown, a locking mechanism includes a fixing block 100, a slider 200, a support block 201, a stop block 204, and a drive assembly 300. The basic connection and operational relationship of the main structures is as follows: the fixing block 100 is the basic support block; in this embodiment, the fixing block 100 is part of the vehicle battery pack structure. A pair of hooks 101 are bolted to the outer surface of the fixing block 100 facing the battery swapping working surface. The working surface of the hook 101 is a locking groove 102, i.e., a groove structure for engaging the support block 201. The locking grooves 102 of the two hooks 101 are arranged opposite each other, both on the side. The slider 200 is a structure mounted on the vehicle chassis. The upper end of the slider 200 has a limiting part that can press against the upper end of the hooks 101 to prevent the slider 200 from excessively passing downwards through the fixing block 100, causing damage to the vehicle body and the vehicle battery pack. The lower end of the support block 201 is hinged to the slider 200. The upper end of the support block 201 has a shape and size that matches the locking groove 102, and the top 103 of the locking groove 102 is arc-shaped to reliably hold the support block 201 within it. Since the hook 101 and the support block 201 are both arranged in pairs and are symmetrical on both sides, when the hook 101 is pulled up by the support block 201, the vehicle battery pack fixed by the fixing block 100 and the vehicle fixed by the slider 200 can be balanced in force and locked evenly, ensuring a stable connection during vehicle operation.

[0044] In practical use, the two support blocks 201 cannot be reliably controlled. In other words, it is unreliable to rely solely on gravity to swing the two support blocks 201 into their respective locking slots 102. In some cases, especially when foreign objects adhere between the two support blocks 201 or block the pivot of the support block rotation, the two support blocks 201 will remain in a close-fitting state and will not automatically separate and fall into their respective locking slots 102 under gravity for locking. This is unacceptable for the requirements of ensuring the safety of vehicle power connection. Therefore, it is necessary to set a stop block 204 to improve the controllability and reliability of the locking action.

[0045] The stop block 204 adopts a structure that is thinner in the middle and thicker at both ends. The thinner size in the middle facilitates its passage through the vertical groove 202 in the middle of the slider 200, while the thicker ends prevent the stop block 204 from coming out of the groove 202. The end located at the outer end of the vehicle battery swapping working surface is wedge-shaped 205, which has two additional functions: First, under the tension of the first compression spring 203, the wedge-shaped block 205 separates the two support blocks 201 with its vertically downward wedge angle, realizing reliable control of the locking action of the support blocks 201; Second, when the wedge-shaped block 205 presses the two support blocks 201 into the locking groove 102, the wedge-shaped block 205 does not move away, but continues to press against the position between the two support blocks 201 near the hinge point of the support blocks 201, using its wedge-shaped structure that is larger at the top and smaller at the bottom to prevent the support blocks 201 from flipping and unlocking. The upper end of the stop block 204 is provided with a protrusion. The lower end of the first compression spring 203 installed in the slide groove 202 is sleeved on the protrusion for mutual positioning. The upper end of the first compression spring 203 abuts against the slider 200.

[0046] In this embodiment, the hook 101 is relatively thick and protrudes from the fixing block 100. The slider 200 is relatively thin to allow sufficient space for the support block 201. The support block 201 is basically flush with the outer surface of the hook 101 and occupies a small lateral dimension overall, thus providing more space for installing larger vehicle battery packs on the vehicle chassis.

[0047] like Figures 6-7 As shown, the drive assembly 300 includes a release lever 301 for abutting the stop block 204 and an unlocking lever 302 for pushing the support block 201 out of the locking groove 102. After the release lever 301 abuts the stop block 204, the unlocking lever 302 needs to be pushed between the hook 101 and the support block 201 by the drive device, so that the support block 201 can be pushed out of the locking groove 102 for unlocking.

[0048] To better achieve the above-mentioned unlocking operation, the upper end of the unlocking lever 302 is designed with a circular structure. The guide portion 104 on the lower side of the hook portion 101, i.e., the guide slope, smoothly guides the unlocking lever 302 to the support block 201. The middle part of the support block 201 near the top of the guide slope has a protrusion 207 that protrudes into the locking groove 102.

[0049] The protrusion 207 serves two purposes. First, it creates a larger contact area and better force distribution, allowing the unlocking lever 302 to stably push the support block 201 away from the hook 101. Second, and more importantly, in this embodiment, a rotating unlocking lever 302 is used to unlock the support block 201. However, the length of the unlocking lever 302 is limited and cannot be too long, requiring clever compensation from the protrusion 207. Specifically, if a support block without the protrusion 207 is selected, the unlocking lever 302 must be significantly extended to more fully open the support block 201. This extension distance basically satisfies the following conditions: the horizontal length of the protrusion is the side length of a triangle, the tilt angle of the support block 201 is the apex angle, and the length that the unlocking lever 302 should extend is the hypotenuse of this triangle. This results in a relatively large extension of the hypotenuse, making the unlocking lever 302 excessively long. If the unlocking lever 302 is too long, the elastic coefficient of the second compression spring 305 needs to be further reduced to ensure that the unlocking lever 301 can smoothly rotate through the hook 101 without being blocked when it abuts the stop block 204. However, a reduced elastic coefficient will cause the unlocking lever to lack sufficient tension to push the stop block open at the beginning of the locking procedure, allowing the slider to enter between the hooks. Therefore, the smoothness of the entire system's operation will be severely affected, making the protrusion 207 essential.

[0050] In this embodiment, to save on the use of mechanisms and simplify equipment complexity, a release lever 301 is used as a driving device to pull the unlocking lever 302 towards the center. Specifically, the release lever 301 is slidably mounted on the frame 303 in a telescopic manner, achieving vertical collapsibility of the release lever 301. Then, a tension spring 304 connects the release lever 301 and the unlocking lever 302. When the release lever 301 is compressed, the second compression spring 305 located at the lower part of the release lever 301 collapses, the release lever 301 slides downward, and the high elastic coefficient tension spring 304 pulls the unlocking levers 302 on both sides to rotate around their respective hinge points with the frame 303. When the release lever 301 compresses the second compression spring 305 to near its limit position, the release lever 301 basically stops collapsing and begins to push the stop block 204 and the first compression spring 203 upward to collapse, releasing the limiting effect of the stop block 204 on the support block 201. Simultaneously, the unlocking lever 302 rotates to the position of the support block 201. As the unlocking lever 301 reaches its downward collapsing limit, it pushes the corresponding support block 201 out of the locking groove 102. Without the obstruction of the stop block 204, the support block 201 retracts. When the slider 200 is pulled away from between the two hooks 101, the opposite sides of the hooks 101 prevent the retracted support block 201 from opening again until the support block 201 is completely disengaged from the position between the hooks 101.

[0051] To avoid interference between the release lever 301 and the unlocking lever 302, in this embodiment, a support column 306 is fixedly installed on the frame 303. The lower end of the release lever 301 is slidably fitted onto the support column 306 over a large area, thereby achieving stable sliding support for the release lever 301 using the support column 306 and ensuring the precise small-area wedge-angle insertion of the release lever 301 and the stop block 204. The second compression spring 305 is fitted onto the support column 306, with its two ends abutting against the table surface of the frame 303 and the lower end of the release lever 301, respectively.

[0052] In this embodiment, the unlocking lever 302 is mounted on the frame 303 via an arched frame structure. Specifically, the two lower ends of the frame 307 are slidably inserted into the platform of the frame 303, and are respectively located below the corresponding hook 101. A third compression spring 308 is fitted onto each of the two lower ends of the frame 307. The lower end of the third compression spring 308 presses against the platform of the frame 303, thereby tensioning the frame 307 upwards. The third compression spring 308 has a large elastic coefficient, keeping the frame 307 stable and firmly supporting the unlocking lever 302. Only when the unlocking lever 302 is accidentally jammed and cannot open the support block 201 will the third compression spring 308 retract for safety protection.

[0053] The aforementioned relatively independent support combination avoids interference between the release lever 301 and the unlocking lever 302 except for the tension of the tension spring 304. This is especially beneficial in preventing the unlocking lever 302 from affecting the release lever 301's unlocking of the stop block 204. On the other hand, it also achieves anti-jamming and retraction protection for the unlocking lever 302.

[0054] refer to Figures 1-3 This embodiment also emphasizes an encryption / unlocking method, which includes the lock structure in any of the above technical solutions.

[0055] The basic unlocking process is as follows: The frame 303 is a mechanism fixedly installed on the mobile battery swapping platform (usually an RGV, a rail-guided vehicle). The frame 303 is moved to the bottom of the vehicle to be swapped and lifted, and the release lever 301 is used to press against the stop block 204.

[0056] First stage: The stop block 204 is in a limited state at this time, and the support blocks 201 are locked on both sides. Therefore, when the release lever 301 initially abuts against the stop block 204, the frictional force of the support block 201 locking the vehicle battery pack on the stop block 204 and the restoring force of the first compression spring 203 on the stop block 204 are greater than the pressure of the second compression spring 305 on the release lever 301, causing the release lever 301 to be compressed by the stop block 204.

[0057] Second stage: As the release lever 301 is compressed and moved downward by the stop block 204, the left and right sides of the release lever 301 are pulled by the tension spring 304 to swing the unlocking lever 302 on both sides towards the middle position until the unlocking lever 302 abuts against the corresponding support block 201.

[0058] Third stage: As the release lever 301 collapses to near its limit, the tension of the second compression spring 305 on the release lever 301 increases, overcoming the tension of the first compression spring 203 on the stop block 204 and the possible friction between the support block 201 and the stop block 204, pushing the stop block 204 upward out of the limit position. Then the release lever 301 continues to collapse to its limit. At this time, the unlocking lever 302 abuts against the released support block 201, causing the support block 201 to disengage from the locking groove 102 and retract relatively.

[0059] During this stage, when the release lever 301 is at the compression limit position, the block descends a certain distance relative to the locking groove so that the top of the block can break free from the constraint of the superior arc at the top of the groove, providing a prerequisite for the release lever to push the block out.

[0060] Phase 4: When the release lever 301 collapses to its limit, the vehicle battery pack rests completely on the battery swapping platform. The battery swapping platform moves downward away from the vehicle chassis, and the retracted support block 201 is pulled out from between the two hooks 101, thus achieving the unlocking or delocking of the vehicle battery pack from the vehicle.

[0061] The basic locking process is as follows: When the newly acquired vehicle battery pack is placed on the battery swapping platform, since the unlocking lever 301 is not under force, the unlocking levers on both sides of the unlocking lever 301 will not be pulled between the two hooks 101, that is, they will not be in the unlocked state of the support block 201. Instead, they will be blocked outside the hooks 101 as the new vehicle battery pack and hooks 101 fall. The battery swapping platform carries the vehicle battery pack and moves it under the vehicle.

[0062] Phase 1: When the battery swapping platform, carrying the vehicle battery pack, is lifted close to the vehicle chassis, the stop block 204 and the release lever 301 abut against each other. Since the unlocking lever 302 is restricted to the outside by the hook 101, the unlocking lever 302 uses the tension spring 304 with a high elastic coefficient to hold the release lever 301 in the upper position, preventing it from collapsing immediately. Conversely, since the stop block 204 is in a free state and is not subject to the friction of the support block 201, the tension of the second compression spring 305 and the force of the tension spring 304 cause the release lever 301 to compress the stop block 204 and the first compression spring 203 first, causing the stop block 204 to disengage from the support block 201.

[0063] In the second stage, the support block 201, without the stop block 204 limiting it, is squeezed by the hooks 101 on both sides, reassembles, and enters the locking groove 102 between the hooks 101. Under the action of gravity, the support block 201, with a certain initial flip angle, automatically falls into the locking groove. To better achieve automatic locking, in this embodiment, a magnetic block is embedded in the inner wall of the locking groove to attract the support block. Afterwards, the battery swapping platform descends and retracts, while the vehicle battery pack is reattached to the support block 201 using the hooks 101, achieving locking or closing.

[0064] Example 2

[0065] While keeping the other basic technical solutions of Embodiment 1 unchanged, in this embodiment, the hook, support block and unlocking rod are all single, realizing the single-sided setting of the locking and closing structure, that is, forming the simplest asymmetric locking and unlocking structure.

[0066] In order to achieve the retention of the release lever by the single-sided unlocking lever, so that the release lever can push the stop block first in the locking procedure, the spring elastic coefficient of this embodiment is almost twice that of the spring elastic coefficient in embodiment 1.

[0067] Example 3

[0068] While keeping the other basic technical solutions of Embodiment 1 unchanged, in this embodiment, the action of the unlocking lever is controlled by a pneumatic device on the vehicle power supply (battery pack) replacement platform, instead of the unlocking lever being pulled by a tension spring.

[0069] In this embodiment, during the locking phase, an additional spring attached to the vehicle power supply is used to assist in pressing the release lever upwards, ensuring that the release lever can immediately push the stop block upwards when it contacts the stop block, thereby allowing the two support blocks to smoothly merge and retract, entering the position between the hooks.

[0070] Once locking is complete, the additional spring attached to the vehicle power supply retracts. During the unlocking process, all collapsing and supporting actions are achieved solely by the second compression spring.

[0071] Example 4

[0072] While keeping the other basic technical solutions of Embodiment 1 unchanged, in this embodiment, the stop block has a large end structure only on the side near the operating surface, and its rear end is directly slidably inserted into the slide groove. The stop block is sealed on the slider by the cover 206, which also prevents the stop block from slipping off.

[0073] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications should fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A mortise lock characterized by: include A fixing block, which is provided with a hook; A slider with a support block hinged thereto; the slider is also provided with an elastic part, which is used to press the support block into the hook part by elastic pressure. The stop block, located on the side of the support block away from the hook, is used to prevent the support block from rotating and disengaging from the hook; The drive assembly includes a release lever for disengaging the stop block and an unlocking lever for pushing the support block out of the hook; the unlocking lever can switch positions on the side of the hook close to the support block and the side away from the support block to achieve unlocking and prevent unlocking. The hook has a locking groove located on the upper side of the hook and close to the side of the support block; the shape and size of the locking groove are adapted to the fitting part of the support block. The hooks are arranged in pairs, and a pair of blocks are hinged together on the slider, each engaging with the hook on the opposite side; the stop block has a wedge-shaped structure with a wedge angle symmetrically inserted between the two blocks; the release rod abuts against the stop block along the gap between the two blocks; the unlocking rods are arranged in pairs and are located on both sides of the release rod to engage with the blocks on each side. The release lever is slidably mounted on the frame and pressed against the stop block by the second compression spring on the frame; the unlocking lever is hinged to the frame; the unlocking lever and the release lever are connected by a tension spring; The performance and connection point settings of the elastic part, the second compression spring and the tension spring can enable the release rod to move downward when the stop block presses against the release rod, and pull the unlocking rods on both sides through the tension spring, so that the unlocking rod rotates into the unlocking position between the hook and the support block; before the unlocking rod enters the unlocking position, the tension of the second compression spring on the compressed release rod exceeds the pressure of the stop block, and pushes the stop block and the elastic part upward in the opposite direction to the limit position.

2. The interlocking lock according to claim 1, characterized in that: The hook has a guide on its lower side and near the support block, so that the unlocking rod can push the support block out of the hook through the guide.

3. A mating lock according to claim 1, characterized in that: The slider is provided with a groove along the relative movement direction between the slider and the fixed block; the stop block is slidably installed in the groove and is pressed by a first compression spring provided in the groove towards the hinge direction of the stop block.

4. A mating lock according to claim 3, characterized in that: The stop block passes through the groove in the middle and expands at the end to prevent the stop block from coming out of the groove.

5. A method of locking and unlocking, characterized by: Locking and unlocking are performed using the interlocking lock of any one of claims 1-4.

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