A cover unlocking device

Abstract

This invention relates to the field of automotive seat armrest technology, and its purpose is to provide a cover unlocking device. This cover unlocking device ensures successful unlocking every time. The aforementioned cover unlocking device includes: a housing assembly, a button mechanism, a locking mechanism, and a spring-loaded mechanism; the housing assembly includes an upper locking shell connected to the cover and a lower locking shell connected to a fixed plate; the bottom end of the button of the button mechanism extends into the upper locking shell; the locking mechanism includes a locking member, a first unlocking component, and a second unlocking component, with both ends of the locking member passing through the upper locking shell and connecting to the lower locking shell; the spring-loaded mechanism is disposed in the lower locking shell, and its top surface abuts against the bottom surface of the upper locking shell; during unlocking, the button moves downward, pushing the first unlocking component and the second unlocking component to move in opposite directions, and the spring-loaded mechanism drives the upper locking shell to move upward, so that the locking member is located between the first unlocking component and the second unlocking component. This invention solves the problem in the prior art where unlocking devices fail to unlock when the cover's spring-loaded speed is less than the unlocking block's reset speed.

Description

Technical Field

[0001] This invention relates to the field of automotive seat armrest technology, specifically to a cover unlocking device. Background Technology

[0002] To improve passenger comfort and functionality, a retractable center armrest is usually installed in the middle of the front or rear seats of a car. The front center armrest is generally fixed, while the rear center armrest is mostly foldable. When the armrest is needed, it is folded down and locked by the mounting brackets on both sides. When not in use, it can be folded down and stored in the back of the rear seat without taking up extra space.

[0003] Most center armrest covers are flip-open, allowing items to be placed in the armrest's storage compartment. To prevent the covers from opening and closing automatically and making noise due to road conditions while the car is in motion, the covers are locked by an unlocking device that can only be unlocked by pressing a button. Existing unlocking devices work by pressing a button, causing two unlocking blocks to move towards each other and compress the spring between them. Once the two unlocking blocks are no longer engaged with the lower trim panel, the spring at the bottom of the unlocking blocks pushes the unlocking blocks and the cover upwards, unlocking the armrest. However, in this unlocking device, releasing the button partially cancels out the elastic force of the lower spring, weakening the elastic force applied to the cover and reducing the cover's rebound speed. When the cover's rebound speed is less than the unlocking block's reset speed, unlocking fails. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that when the button of the unlocking device in the prior art is released, it will cancel the elastic force of the lower spring and affect the rebound speed of the cover plate. When the rebound speed of the cover plate is less than the reset speed of the unlocking block, the unlocking failure will occur. Thus, a cover plate unlocking device that can guarantee successful unlocking is provided.

[0005] To address the aforementioned problems, the present invention provides a cover plate unlocking device having a locked state and an unlocked state, comprising:

[0006] The housing assembly includes an upper locking shell and a lower locking shell, the upper locking shell being connected to a cover plate, the lower locking shell being connected to a fixing plate, and the bottom of the upper locking shell being located inside the lower locking shell;

[0007] A button mechanism is connected to the cover plate. The button mechanism includes a button, the bottom end of which extends into the upper lock housing, and the button can move along its axial direction under external force.

[0008] A locking mechanism is disposed within the upper lock housing. The locking mechanism includes a locking member, a first unlocking component, and a second unlocking component. The locking member is disposed along the width direction of the lower lock housing. Both ends of the locking member pass through the upper lock housing and are connected to the lower lock housing. The locking member is slidably connected to the upper lock housing, and the sliding direction is along the height direction of the lower lock housing. The first unlocking component and the second unlocking component are disposed along the length direction of the lower lock housing.

[0009] A spring-back mechanism is disposed on the lower locking housing, and the top surface of the spring-back mechanism abuts against the bottom surface of the upper locking housing;

[0010] In the locked state, the upper surfaces of the first unlocking component and the second unlocking component are engaged with the locking member;

[0011] In the unlocked state, the button is driven downward by an external force, which pushes the first unlocking component and the second unlocking component to move in opposite directions. The rebound mechanism drives the upper lock shell, the first unlocking component, and the second unlocking component to move upward. The locking member is located between the first unlocking component and the second unlocking component.

[0012] Optionally, the first unlocking component includes: a first unlocking block, a first connecting rod, and a first elastic element. The first connecting rod is connected to the side of the first unlocking block away from the second unlocking component. The first elastic element is sleeved on the first connecting rod, and one end of the first elastic element is connected to the inner wall of the upper lock shell, and the other end is connected to the first unlocking block.

[0013] The second unlocking component includes: a second unlocking block, a second connecting rod, and a second elastic element. The second connecting rod is connected to the side of the second unlocking block away from the first unlocking component. The second elastic element is sleeved on the second connecting rod, and one end of the second elastic element is connected to the inner wall of the upper lock shell, while the other end is connected to the second unlocking block.

[0014] Optionally, the first unlocking block includes: a first main block and a first extension block, the first main block having a first guide slope on the side near the second unlocking block, the first extension block being located on the side of the first main block near the second unlocking block, and the width of the first extension block being smaller than the width of the first main block;

[0015] The second unlocking block includes: a second main block and a second extension block. The second main block has a second guide slope on the side near the first unlocking block. The second extension block is located on the side of the second main block near the first unlocking block. The width of the second extension block is smaller than the width of the second main block. The first extension block and the second extension block are spaced apart along the width direction of the lower lock housing.

[0016] Optionally, the bottom end of the button has a first pushing part and a second pushing part, the first pushing part and the second pushing part are spaced apart along the length direction of the lower lock shell, and the spacing distance is greater than or equal to the size of the locking member. The first pushing part abuts against the first unlocking block, and the first pushing part is located on the side away from the first extension block. The second pushing part abuts against the second unlocking block, and the second pushing part is located on the side away from the second extension block.

[0017] Optionally, the button mechanism further includes: a button housing and a third elastic element, the button housing being connected to the cover plate, the bottom end of the button extending through the button housing into the upper lock housing, one end of the third elastic element being connected to the button housing, and the other end being connected to the button.

[0018] Optionally, the button housing has a stepped limiting portion. In the unlocked state, the bottom end of the button is engaged with the locking member, and the displacement of the button from the locked state to the unlocked state is less than the distance from the top end of the button to the limiting portion in the locked state.

[0019] Optionally, the rebound mechanism includes: two sets of spaced-apart top plate assemblies and two fourth elastic members respectively connected to the two sets of top plate assemblies. One end of the fourth elastic member abuts against the bottom surface of the lower lock housing, and the other end abuts against the top plate assembly. The top surface of the top plate assembly abuts against the bottom surface of the upper lock housing, and the top plate assembly is slidably connected to the side surface of the lower lock housing.

[0020] Optionally, the top plate assembly includes: a top plate, a connecting plate, and a sliding member. The top plate is slidably connected to the side of the lower lock housing, the connecting plate is slidably connected to the top plate, the sliding member is connected to the connecting plate, the fourth elastic member is sleeved on the sliding member, and one end of the sliding member passes through a through hole on the bottom surface of the lower lock housing.

[0021] Optionally, the lower lock housing is provided with two sets of sliding grooves on its side, and the two top plates are slidably connected to the two sets of sliding grooves respectively, and the upper ends of the sliding grooves are bent toward the other set of sliding grooves.

[0022] Optionally, the upper lock housing is provided with a locking connector, the locking connector having a round hole and a sliding channel, the top end of the sliding channel communicating with the round hole, and the locking connector passing through the round hole and connecting to the lower lock housing.

[0023] The present invention has the following advantages:

[0024] 1. The cover plate unlocking device provided by the present invention includes: a housing assembly, a button mechanism, a locking mechanism, and a spring-loaded mechanism. The housing assembly includes an upper locking shell and a lower locking shell. The upper locking shell is connected to the cover plate, and the lower locking shell is connected to a fixed plate, with the bottom of the upper locking shell located inside the lower locking shell. The button mechanism is connected to the cover plate and includes a button. The bottom end of the button extends into the upper locking shell, and the button can move axially under external force. The locking mechanism is disposed within the upper locking shell and includes: a locking member, a first unlocking component, and a second unlocking component. The locking member is disposed along the width direction of the lower locking shell, and both ends of the locking member pass through the upper locking shell and connect to the lower locking shell. The locking member is slidably connected to the upper locking shell, and the sliding direction is along the height direction of the lower locking shell. The first unlocking component and the second unlocking component are disposed along the length direction of the lower locking shell. The spring-loaded mechanism is disposed in the lower locking shell, and the top surface of the spring-loaded mechanism abuts against the bottom surface of the upper locking shell. In the locked state, the upper surfaces of the first and second unlocking components are engaged with the bottom end of the locking member, limiting the spring-loaded mechanism. The locking member also connects the upper and lower lock housings, so all mechanisms are stationary, achieving locking. In the unlocked state, pressing the button causes the first and second unlocking components to move in opposite directions. The first and second unlocking components are no longer engaged with the locking member, and the spring-loaded component is no longer restricted, causing the upper lock housing, the first and second unlocking components to spring upwards, achieving unlocking. Furthermore, because the upper lock housing springs back after unlocking, meaning the first and second unlocking components also spring upwards to a higher position than in the locked state, even if the first and second unlocking components reset, the locking member can only remain between the first and second unlocking components, unable to form a locked state. Therefore, unlocking failures are avoided, ensuring successful unlocking every time.

[0025] 2. The cover unlocking device provided by the present invention includes a first unlocking component comprising: a first unlocking block, a first connecting rod, and a first elastic element. The first connecting rod is connected to the side of the first unlocking block away from the second unlocking component. The first elastic element is sleeved on the first connecting rod, with one end connected to the inner wall of the upper lock housing and the other end connected to the first unlocking block. The first unlocking block comprises: a first main block and a first extension block. The side of the first main block closest to the second main block has a first guide slope. The first extension block is located on the side of the first main block closest to the second main block, and the width of the first extension block is smaller than the width of the first main block. By setting the first guide slope, it is convenient to guide the button to push the first unlocking block to move. The width of the first extension block is smaller than the width of the first main block, which facilitates the upward movement of the first unlocking component through the spring mechanism, preventing the first unlocking component from resetting and then jamming with the locking component, thus causing unlocking failure. The structure of the second unlocking component is similar to that of the first unlocking component. Locking and unlocking are achieved through the cooperation of the first and second unlocking components. The structure is simple and ingenious, and the practical effect is good.

[0026] 3. The cover unlocking device provided by the present invention includes a button mechanism comprising: a button, a button housing, and a third elastic member. The button housing is connected to the cover plate, and the bottom end of the button extends through the button housing into the upper lock housing to push the first unlocking component and the second unlocking component. One end of the third elastic member is connected to the button housing, and the other end is connected to the button. By providing the third elastic member, the button can automatically spring back to its original position after being released. The button housing has a stepped limiting portion. Pressing the top of the button moves the device from a locked state to an unlocked state. In the unlocked state, the bottom end of the button engages with the locking component, limiting further displacement of the button. Furthermore, the total displacement of the button from the locked state to the unlocked state is less than the distance from the top of the button to the limiting portion in the locked state. During unlocking, the button moves downwards, pushing the first and second unlocking components in opposite directions. Once the bottom of the button contacts the locking element, it can no longer move downwards. At this point, the first and second unlocking components are no longer engaged with the locking element, and there is still a distance between the button and the limiting part of the button housing. Therefore, the spring-back mechanism can spring back, causing the upper lock housing and the first and second unlocking components to spring upwards. After the first and second unlocking components spring upwards, the locking element is located between them. Even if the first and second unlocking components move towards each other and reset, they cannot lock against the upper lock housing again, thus ensuring successful unlocking every time.

[0027] 4. The cover unlocking device provided by the present invention includes a spring-back mechanism comprising: two sets of spaced-apart top plate assemblies and two fourth elastic members respectively connected to the two sets of top plate assemblies. The top surface of the top plate assembly abuts against the bottom surface of the upper lock shell, and the fourth elastic members provide elastic force to drive the upper lock shell to spring back and unlock. The top plate assembly includes: a top plate, a connecting plate, and a sliding member. The top plate is slidably connected to the side of the lower lock shell, the connecting plate is slidably connected to the top plate, and the sliding member is connected to the connecting plate. The fourth elastic members are sleeved on the sliding member. The side of the lower lock shell is provided with two sets of sliding grooves, and the two top plates are slidably connected to the two sets of sliding grooves respectively. The upper ends of the sliding grooves are bent towards the other set of sliding grooves. This sliding groove structure can buffer and decelerate, preventing the spring-back force from being too large and causing the cover to suddenly spring up. Furthermore, after the cover is unlocked and opened, the two top plates will move towards each other. After the two top plates approach each other, only a small gap is left between them, which can prevent foreign objects from entering the lower lock shell and also cover the interior of the lower lock shell for a more aesthetically pleasing appearance. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the cover unlocking device of the present invention installed on a car armrest and locking the cover.

[0030] Figure 2 This is a schematic diagram of the cover unlocking device of the present invention installed on a car armrest with the cover open;

[0031] Figure 3 This is an exploded view of the button mechanism, locking mechanism, and upper lock shell in the cover unlocking device of the present invention;

[0032] Figure 4 This is an exploded view of the spring-back mechanism and the lower locking shell in the cover unlocking device of the present invention;

[0033] Figure 5 This is a schematic diagram of the cover plate unlocking device of the present invention in the locked state;

[0034] Figure 6 This is a schematic diagram of the cover plate unlocking device of the present invention from the locked state to the unlocked state;

[0035] Figure 7 This is a schematic diagram of the cover plate unlocking device of the present invention in the unlocked state.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Housing assembly; 11. Upper locking housing; 111. Locking connector; 12. Lower locking housing; 121. Slide groove;

[0038] 2. Cover plate;

[0039] 3. Fixing plate;

[0040] 4. Button mechanism; 41. Button; 411. First pushing part; 412. Second pushing part; 42. Button housing; 421. Limiting part; 43. Third elastic element;

[0041] 51. Locking component; 52. First unlocking component; 521. First unlocking block; 5211. First main block; 5212. First extension block; 522. First connecting rod; 523. First elastic element; 53. Second unlocking component; 531. Second unlocking block; 5311. Second main block; 5312. Second extension block; 532. Second connecting rod; 533. Second elastic element;

[0042] 61. Top plate assembly; 611. Top plate; 612. Connecting plate; 613. Sliding component; 62. Fourth elastic component. Detailed Implementation

[0043] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0046] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] like Figures 1 to 4 As shown, this is a preferred embodiment of the cover unlocking device of the present invention. This cover unlocking device is suitable for installation on the armrest of a car seat, and it can guarantee 100% successful unlocking without any jamming or inability to open.

[0048] The aforementioned cover unlocking device includes: a housing assembly 1, a button mechanism 4, a locking mechanism, and a spring-loaded mechanism. The housing assembly 1 includes an upper locking shell 11 and a lower locking shell 12. The upper locking shell 11 is connected to the cover plate 2, and the lower locking shell 12 is connected to a fixing plate 3. The bottom of the upper locking shell 11 is located inside the lower locking shell 12. Specifically, the cover plate 2 can be divided into upper, middle, and lower layers, while the fixing plate 3 is a stationary structure in the armrest, such as the plate for setting a cup holder in this embodiment. When locked, the upper locking shell 11 and lower locking shell 12 are fixed together and cannot be opened. When unlocked, the upper locking shell 11 and lower locking shell 12 can be separated, allowing the cover plate 2 to be flipped open. The button mechanism 4 is connected to the cover plate 2 and includes a button 41. The bottom end of the button 41 extends into the upper locking shell 11, and the button 41 can move axially under external force. Unlocking is achieved by pressing the button 41. A locking mechanism is disposed within the upper lock housing 11. The locking mechanism includes a locking member 51, a first unlocking component 52, and a second unlocking component 53. The locking member 51 is disposed along the width direction of the lower lock housing 12. Both ends of the locking member 51 pass through the upper lock housing 11 and connect to the lower lock housing 12, and the locking member 51 is slidably connected to the upper lock housing 11. The sliding direction is along the height direction of the lower lock housing 12. The first unlocking component 52 and the second unlocking component 53 are disposed along the length direction of the lower lock housing 12. A spring-loaded mechanism is disposed within the lower lock housing 12. The top surface of the spring-loaded mechanism abuts against the bottom surface of the upper lock housing 11. The spring-loaded mechanism can unlock the upper lock housing 11 by applying a spring-loaded force to make the upper lock housing 11 spring up. The cover unlocking device has two states: a locked state and an unlocked state. In the locked state, the upper surfaces of the first unlocking component 52 and the second unlocking component 53 are engaged with the bottom end of the locking member 51. At this time, the rebound force applied by the rebound component is restricted by the locking member 51. The first unlocking component 52, the second unlocking component 53 and the upper lock shell 11 cannot rebound upwards. The upper lock shell 11 and the lower lock shell 12 are connected together, thus achieving locking. In the unlocked state, an external force needs to be applied to button 41. Moving button 41 downwards pushes the first unlocking component 52 and the second unlocking component 53 to move in opposite directions. Then, the upper surfaces of the first unlocking component 52 and the second unlocking component 53 are no longer engaged with the bottom end of the locking member 51. The locking member 51 is slidably connected to the upper lock shell 11. At this time, the spring mechanism can drive the upper lock shell 11 to spring upwards, thereby driving the first unlocking component 52 and the second unlocking component 53 inside the upper lock shell 11 to move upwards as well. The locking member 51 is then located between the first unlocking component 52 and the second unlocking component 53. That is, the bottom end of the locking member 51 is no longer above the upper surfaces of the first unlocking component 52 and the second unlocking component 53, and therefore cannot be locked again. So even if button 41 is released at this time, the first unlocking component 52 and the second unlocking component 53 will reset, and the locking member 51 will not be able to limit the upper lock shell 11, thus ensuring that unlocking is successful every time.

[0049] Furthermore, the first unlocking component 52 includes: a first unlocking block 521, a first connecting rod 522, and a first elastic element 523. The first connecting rod 522 is connected to the side of the first unlocking block 521 away from the second unlocking component 53. The first elastic element 523 is sleeved on the first connecting rod 522, with one end of the first elastic element 523 connected to the inner wall of the upper lock housing 11 and the other end connected to the first unlocking block 521. In this embodiment, the first connecting rod 522 is a round rod, and the first elastic element 523 is preferably a spring. After pressing the button 41, the first unlocking block 521 will be pushed to move away from the second unlocking block 531. When the button 41 is released, the first elastic element 523 will drive the first unlocking block 521 to move back to the side closer to the second unlocking block 531.

[0050] Specifically, the first unlocking block 521 consists of two parts: a first main block 5211 and a first extension block 5212. The first main block 5211 has a first guide slope on the side near the second main block 5311. The first extension block 5212 is located on the side of the first main block 5211 near the second unlocking block 531, and the width of the first extension block 5212 is smaller than the width of the first main block 5211. The first guide slope guides the button 41 to push the first unlocking block 521 to move, while the width of the first extension block 5212 is smaller than the width of the first main block 5211 so that the button 41 can move downward to the bottom of the first main block, and the rebound mechanism can better drive the first unlocking block 521 and the upper lock shell 11 to rebound. In addition, the bottom of the first extension block 5212 also has a slope so that when the cover plate 2 is closed again, the first unlocking component 52 and the locking component 51 can lock the upper lock shell 11 and the lower lock shell 12 together again.

[0051] The structure of the second unlocking component 53 is similar to that of the first unlocking component 52. The second unlocking component 53 includes a second unlocking block 531, a second connecting rod 532, and a second elastic member 533. The second connecting rod 532 is connected to the side of the second unlocking block 531 away from the first unlocking component 52. The second elastic member 533 is sleeved on the second connecting rod 532, with one end of the second elastic member 533 connected to the inner wall of the upper lock housing 11 and the other end connected to the second unlocking block 531. In this embodiment, the second connecting rod 532 is a round rod, and the second elastic member 533 is preferably a spring. After pressing the button 41, the second unlocking block 531 will be pushed to move away from the first unlocking block 521. When the button 41 is released, the second elastic member 533 will drive the first unlocking block 521 to move back to the side closer to the first unlocking block 521.

[0052] The second unlocking block 531 includes a second main block 5311 and a second extension block 5312. The second main block 5311 has a second guide slope on the side near the first main block 5211. The second extension block 5312 is located on the side of the second main block 5311 near the first unlocking block 521. The width of the second extension block 5312 is smaller than the width of the second main block 5311, and the first extension block 5212 and the second extension block 5312 are spaced apart along the width direction of the second main block 5311. The second guide slope and the second extension block 5312 have the same function as the first guide slope and the first extension block 5212. In addition, the bottom of the second extension block 5312 also has a slope so that when the cover plate 2 is replaced, the second unlocking assembly 53 and the locking member 51 can lock the upper lock shell 11 and the lower lock shell 12 together again.

[0053] The locking member 51 is fixed and can lock the upper lock shell 11 and the lower lock shell 12. Specifically, the upper lock shell 11 is connected to the lower layer of the cover plate 2, and the upper lock shell 11 is provided with a locking connector 111. The locking connector 111 is composed of an inner soft rubber part and an outer plastic part. The inner soft rubber part has a round hole and a sliding channel. The top of the sliding channel communicates with the round hole. In the locked state, the locking member 51 passes through the round hole and connects to the lower lock shell 12. After unlocking, the spring mechanism will cause the upper lock shell 11 to spring upward, at which time the locking member 51 is located in the sliding channel. In this embodiment, the locking member 51 is preferably a columnar steel wire.

[0054] The button mechanism 4 includes a button 41, a button housing 42, and a third elastic member 43. The button 41 is T-shaped, with a pressing portion at the top and a bottom portion used to push the first unlocking component 52 and the second unlocking component 53. Specifically, the bottom of the button 41 has a first pushing portion 411 and a second pushing portion 412, which are spaced apart along the length of the lower lock housing 12, with the distance between them greater than or equal to the size of the locking member 51 to avoid it. Both the first pushing portion 411 and the second pushing portion 412 are rectangular blocks, with the first pushing portion 411 abutting against the first unlocking block 521, and the first pushing portion 411 located on the side away from the first extended block 5212. That is, in the locked state, the bottom surface of the first pushing portion 411 abuts against the top surface of the first unlocking block 521; when unlocking, as the button 41 is pressed, the first pushing portion 411 pushes the first unlocking block 521 along the first guide slope. Similarly, the second pushing part 412 abuts against the second unlocking block 531, and the second pushing part 412 is located on the side away from the second extension block 5312. That is, in the locked state, the bottom surface of the second pushing part 412 abuts against the top surface of the second unlocking block 531. When unlocking, as the button 41 is pressed, the second pushing part 412 pushes the second unlocking block 531 along the second guide slope. In other words, the first pushing part 411 and the second pushing part 412 are located at the bottom of the button 41 and are arranged diagonally opposite each other.

[0055] The button housing 42 is connected to the middle layer of the cover plate 2. The bottom end of the button 41 passes through the button housing 42 and extends into the upper lock shell 11. One end of the third elastic element 43 is connected to the button housing 42, and the other end is connected to the button 41. After the third elastic element 43 is provided, releasing the button 41 will achieve a reset. In this embodiment, two third elastic elements 43 are provided to ensure that the button 41 is subjected to balanced force, and the third elastic element 43 is preferably a spring.

[0056] Furthermore, the button housing 42 has a stepped limiting portion 421. In the unlocked state, the bottom end of the button 41 engages with the locking member 51, limiting further displacement of the button 41. The displacement of the button 41 from the locked state to the unlocked state is less than the distance from the top of the button 41 to the limiting portion 421 in the locked state. During unlocking, the button 41 moves downwards, pushing the first unlocking block 521 and the second unlocking block 531 in opposite directions along the first guide slope and the second guide slope. When the first guide slope separates from the bottom surface of the first pushing part 411 and the second guide slope separates from the bottom surface of the second pushing part 412, the button 41 also engages with the locking member 51. However, at this time, there is still a distance between the top of the button 41 and the limiting portion 421. At this point, the rebound mechanism can play its rebound role, causing the upper lock housing 11 and the first unlocking component 52 and the second unlocking component 53 to spring upwards, completing the unlocking process. Furthermore, since the first unlocking component 52 and the second unlocking component 53 are released, the locking component 51 is located between the first unlocking component 52 and the second unlocking component 53. At this time, even if the button 41 is released to reset the first unlocking component 52 and the second unlocking component 53, they can no longer lock the lock housing 11 and the cover plate 2 with the locking component 51. Therefore, it can be guaranteed that unlocking is successful every time.

[0057] The spring-loaded mechanism includes two sets of spaced-apart top plate assemblies 61 and two fourth elastic members 62 connected to the two sets of top plate assemblies 61 respectively. One end of the fourth elastic member 62 abuts against the bottom surface of the lower lock housing 12, and the other end abuts against the top plate assembly 61. The top surface of the top plate assembly 61 abuts against the bottom surface of the upper lock housing 11, and the top plate assembly 61 is slidably connected to the side of the lower lock housing 12. In the locked state, the fourth elastic member 62 is compressed. After unlocking, the fourth elastic member 62 is released, causing the upper lock housing 11 to spring upward, and the cover plate 2 can be opened.

[0058] Furthermore, the top plate assembly 61 includes a top plate 611, a connecting plate 612, and a sliding member 613. The top plate 611 is slidably connected to the side of the lower lock housing 12, the connecting plate 612 is slidably connected to the top plate 611, and the sliding member 613 is connected to the connecting plate 612. A fourth elastic member 62 is sleeved on the sliding member 613, with one end abutting against the connecting plate 612 and the other end abutting against the bottom surface of the lower lock housing 12. One end of the sliding member 613 passes through a through hole in the bottom surface of the lower lock housing 12. Specifically, a groove is formed on the inner side of the top plate 611, and the connecting plate 612 is slidably connected to the groove, with the sliding direction along the length of the lower lock housing 12. The sliding member 613 is cross-shaped, and correspondingly, a cross-shaped through hole is formed on the bottom surface of the lower lock housing 12. When the fourth elastic member 62 is compressed or released, the sliding member 613 slides within the through hole.

[0059] The lower lock housing 12 has two sets of sliding grooves 121 on its side. Two top plates 611 are slidably connected to the two sets of sliding grooves 121 respectively, and the upper ends of the sliding grooves 121 are bent towards the other set of sliding grooves 121. Specifically, each set of sliding grooves 121 includes three grooves 121 spaced apart. The corresponding top plates 611 have three protrusions on both sides that match the shape of the sliding grooves 121. The protrusions slide within the sliding grooves 121. This structure of the sliding grooves 121 can buffer and decelerate, preventing excessive rebound force from causing the cover plate 2 to suddenly spring up. Furthermore, when the cover plate 2 is opened, the two top plates 611 will move towards each other, that is, the two top plates 611 will move closer to each other, leaving a small gap between the two top plates 611. This can prevent foreign objects from entering the lower lock housing 12 and causing subsequent malfunctions in the rebound mechanism, and can also cover the internal structure of the lower lock housing 12, making the cover plate 2 more aesthetically pleasing when opened.

[0060] The working process of the cover plate unlocking device provided in this embodiment is described below:

[0061] like Figure 5 The diagram shows the cover unlocking device in the locked state. In the locked state, the upper surface of button 41 is basically flush with the upper surface of button housing 42, the third elastic member 43 is not compressed, the upper surfaces of the first unlocking component 52 and the second unlocking component 53 abut against the bottom end of the locking member 51, and the fourth elastic member 62 is fully compressed. Due to the influence of the locking member 51, the upper lock shell 11 and the lower lock shell 12 are locked together by the locking member 51, and the cover 2 cannot be opened at this time.

[0062] like Figure 6 The diagram illustrates the process of unlocking the cover plate unlocking device. When button 41 is pressed, it moves downwards. The first pushing part 411 and the second pushing part 412 of button 41 push the first unlocking block 521 and the second unlocking block 531 in opposite directions along the first guide slope and the second guide slope, respectively. When button 41 reaches its limit position, the bottom end of button 41 engages with the locking member 51 and cannot move downwards further. At this time, the first unlocking block 521 and the second unlocking block 531 also stop moving to the sides. Since button 41 and the locking member 51 no longer restrict the first unlocking block 521 and the second unlocking block 531, and there is still a distance between the top of button 41 and the limiting part 421, the fourth elastic member 62 of the rebound mechanism begins to be released.

[0063] like Figure 7The diagram shows the unlocking device of the cover plate in the unlocked state. The fourth elastic element 62 drives the top plate 611 to slide upward along the slide groove 121, which in turn drives the upper lock shell 11, the first unlocking component 52 and the second unlocking component 53 to spring up until the limiting part 421 abuts against the upper end of the button 41. At this time, the first pushing part 411 and the second pushing part 412 of the button 41 reach the bottom of the upper lock shell 11, and are adjacent to the first extension block 5212 and the second extension block 5312 respectively, restricting the first elastic element 523 and the second elastic element 533 from driving the first unlocking block 521 and the second unlocking block 531 to move towards each other to reset. At this time, the upper lock shell 11 and the cover plate 2 have been pushed up a certain distance, and the first unlocking component 52 and the second unlocking component 53 have also been pushed up a certain distance. The locking member 51 is located between the first unlocking component 52 and the second unlocking component 53. When the button 41 is released, after the first unlocking component 52 and the second unlocking component 53 are reset, the two sides of the locking member 51 abut against the first unlocking component 52 and the second unlocking component 53 respectively, but cannot restrict the upper lock shell 11 again, thus ensuring that unlocking is successful every time.

[0064] At this point, release button 41. The third elastic element 43 causes button 41 to spring back, and the fourth elastic element 62 causes the upper lock shell 11 to continue to spring up. The cover plate 2 is also ejected, and the cover plate 2 can be opened smoothly.

[0065] When the cover plate 2 is locked again, pressing down on the cover plate 2, guided by the inclined surfaces at the bottom of the first extension block 5212 and the second extension block 5312, causes the locking member 51 to re-enter the circular hole from the sliding channel, and the bottom end of the locking member 51 engages with the upper surfaces of the first unlocking block 521 and the second unlocking block 531. Furthermore, as force is applied to the cover plate 2, the fourth elastic member 62 is compressed again, eventually returning to the locked state.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A cover plate unlocking device, having a locked state and an unlocked state, characterized in that, include: The housing assembly (1) includes an upper locking shell (11) and a lower locking shell (12), the upper locking shell (11) being connected to a cover plate (2), the lower locking shell (12) being connected to a fixing plate (3), and the bottom of the upper locking shell (11) being located inside the lower locking shell (12); Button mechanism (4), the button mechanism (4) is connected to the cover plate (2), the button mechanism (4) includes a button (41), the bottom end of the button (41) extends into the upper lock shell (11), and the button (41) can move along its axial direction under the drive of external force; A locking mechanism is provided inside the upper lock shell (11). The locking mechanism includes a locking member (51), a first unlocking component (52), and a second unlocking component (53). The locking member (51) is arranged along the width direction of the lower lock shell (12). Both ends of the locking member (51) pass through the upper lock shell (11) and are connected to the lower lock shell (12). The locking member (51) is slidably connected to the upper lock shell (11) and the sliding direction is along the height direction of the lower lock shell (12). The first unlocking component (52) and the second unlocking component (53) are arranged along the length direction of the lower lock shell (12). A spring-back mechanism is provided on the lower lock housing (12), and the top surface of the spring-back mechanism abuts against the bottom surface of the upper lock housing (11). In the locked state, the upper surfaces of the first unlocking component (52) and the second unlocking component (53) engage with the locking member (51); When in the unlocked state, the button (41) is driven downward by an external force, and pushes the first unlocking component (52) and the second unlocking component (53) to move in opposite directions. The rebound mechanism drives the upper lock shell (11), the first unlocking component (52) and the second unlocking component (53) to move upward. The locking member (51) is located between the first unlocking component (52) and the second unlocking component (53).

2. The cover plate unlocking device according to claim 1, characterized in that, The first unlocking component (52) includes: a first unlocking block (521), a first connecting rod (522) and a first elastic member (523). The first connecting rod (522) is connected to the side of the first unlocking block (521) away from the second unlocking component (53). The first elastic member (523) is sleeved on the first connecting rod (522), and one end of the first elastic member (523) is connected to the inner wall of the upper lock shell (11), and the other end is connected to the first unlocking block (521). The second unlocking component (53) includes: a second unlocking block (531), a second connecting rod (532), and a second elastic member (533). The second connecting rod (532) is connected to the side of the second unlocking block (531) away from the first unlocking component (52). The second elastic member (533) is sleeved on the second connecting rod (532), and one end of the second elastic member (533) is connected to the inner wall of the upper lock shell (11), and the other end is connected to the second unlocking block (531).

3. The cover plate unlocking device according to claim 2, characterized in that, The first unlocking block (521) includes: a first main block (5211) and a first extension block (5212). The first main block (5211) has a first guide slope on the side near the second unlocking block (531). The first extension block (5212) is located on the side of the first main block (5211) near the second unlocking block (531), and the width of the first extension block (5212) is smaller than the width of the first main block (5211). The second unlocking block (531) includes: a second main block (5311) and a second extension block (5312). The second main block (5311) has a second guide slope on the side near the first unlocking block (521). The second extension block (5312) is located on the side of the second main block (5311) near the first unlocking block (521). The width of the second extension block (5312) is smaller than the width of the second main block (5311). The first extension block (5212) and the second extension block (5312) are spaced apart along the width direction of the lower lock shell (12).

4. The cover plate unlocking device according to claim 3, characterized in that, The bottom end of the button (41) has a first pushing part (411) and a second pushing part (412). The first pushing part (411) and the second pushing part (412) are spaced apart along the length direction of the lower lock shell (12), and the spacing is greater than or equal to the size of the locking member (51). The first pushing part (411) abuts against the first unlocking block (521), and the first pushing part (411) is located on the side away from the first extension block (5212). The second pushing part (412) abuts against the second unlocking block (531), and the second pushing part (412) is located on the side away from the second extension block (5312).

5. The cover plate unlocking device according to claim 1, characterized in that, The button mechanism (4) further includes a button housing (42) and a third elastic element (43). The button housing (42) is connected to the cover plate (2). The bottom end of the button (41) passes through the button housing (42) and extends into the upper lock shell (11). One end of the third elastic element (43) is connected to the button housing (42), and the other end is connected to the button (41).

6. The cover plate unlocking device according to claim 5, characterized in that, The button housing (42) has a stepped limiting part (421). In the unlocked state, the bottom end of the button (41) is engaged with the locking member (51), and the displacement of the button (41) from the locked state to the unlocked state is less than the distance from the top of the button (41) to the limiting part (421) in the locked state.

7. The cover plate unlocking device according to claim 1, characterized in that, The rebound mechanism includes two sets of spaced-apart top plate assemblies (61) and two fourth elastic members (62) respectively connected to the two sets of top plate assemblies (61). One end of the fourth elastic member (62) abuts against the bottom surface of the lower lock shell (12), and the other end abuts against the top plate assembly (61). The top surface of the top plate assembly (61) abuts against the bottom surface of the upper lock shell (11), and the top plate assembly (61) is slidably connected to the side of the lower lock shell (12).

8. The cover plate unlocking device according to claim 7, characterized in that, The top plate assembly (61) includes a top plate (611), a connecting plate (612), and a sliding member (613). The top plate (611) is slidably connected to the side of the lower lock shell (12), the connecting plate (612) is slidably connected to the top plate (611), the sliding member (613) is connected to the connecting plate (612), the fourth elastic member (62) is sleeved on the sliding member (613), and one end of the sliding member (613) passes through a through hole on the bottom surface of the lower lock shell (12).

9. The cover plate unlocking device according to claim 8, characterized in that, The lower lock shell (12) has two sets of sliding grooves (121) on its side. The two top plates (611) are slidably connected to the two sets of sliding grooves (121) respectively, and the upper ends of the sliding grooves (121) are bent toward the other set of sliding grooves (121).

10. The cover unlocking device according to any one of claims 1-9, characterized in that, The upper lock shell (11) is provided with a locking connector (111), which has a round hole and a sliding channel. The top end of the sliding channel communicates with the round hole, and the locking member (51) passes through the round hole and connects to the lower lock shell (12).

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