An integrated deck lid lock assembly

Abstract

The application discloses an integrated machine cover lock assembly and belongs to the technical field of automobile engineering, which comprises a lock body bottom plate, a lock ring, a ratchet wheel, a ratchet pawl, a main lock opening rocker arm, a main lock opening rocker arm spring, a ratchet wheel riveting plate, an auxiliary lock opening rocker arm, an auxiliary lock opening handle, a rivet shaft, a ratchet wheel spring, an auxiliary lock rocker arm spring and a ratchet pawl spring. The application is safe and reliable, the first gear lock and the second gear lock are locked by the same ratchet wheel, the first gear is unlocked by a cab cover opening handle, and the second gear is unlocked by a machine cover lock auxiliary lock handle at the front end of the machine cover, thereby reducing the risk of misoperation. After the first gear lock is unlocked, the machine cover can be popped up to the second gear lock position by the elastic force of the ratchet wheel, which can effectively indicate to the driver and passengers that the machine cover has been opened. Under the premise of ensuring safety, the structure is simple, the gear position is clear, and the machine cover can be automatically lifted whether the first gear is unlocked or the second gear is unlocked, so that the machine cover can be easily opened and the failure mode of being stuck when the machine cover is opened is avoided.

Description

Technical Field

[0001] This invention belongs to the field of automotive engineering technology, specifically relating to an integrated hood lock assembly. Background Technology

[0002] The hood lock falls under the category of automotive safety systems. Its primary function is to protect the normal use and safety of parts inside the front compartment, and to prevent the hood from being accidentally opened under various special and extreme conditions, thus protecting the safety of the driver and passengers. Therefore, the hood lock is required to have a two-position locking mechanism.

[0003] Referring to patent publication number CN215407971U, an engine hood auxiliary lock, an engine hood lock assembly, and a vehicle, the engine hood auxiliary lock includes a lock body, which includes a mounting portion for rotatable mounting, a lock hook portion, and an auxiliary locking portion. A latch receiving interval exists between the auxiliary locking portion and the lock hook portion. The lock hook portion includes a latch for locking with a latch provided on the engine hood, and the auxiliary locking portion includes an outwardly convex arc surface facing the lock hook portion. When the engine hood moves downward to close, the latch on the engine hood drives the outwardly convex arc surface to quickly return the lock body to the locked position. This engine hood auxiliary lock can ensure rapid return of the engine hood auxiliary lock when the engine hood is closed, avoiding interference between the inner panel of the engine hood and the auxiliary lock handle. It also has a long service life, low cost, and high ergonomic comfort. However, the following problems exist:

[0004] Currently, there are two main types of cover locks on the market. The first type has an auxiliary lock with an integrated hook and handle, in addition to the main lock ratchet and pawl. This auxiliary lock is used to hook the pawl after the main lock ratchet has released it, and the cover needs to be lifted while the auxiliary lock handle is manually opened. The second type has a two-position structure on both the ratchet and pawl. By operating the cover opening handle twice, the main lock and the auxiliary lock are unlocked in sequence. This structure is more convenient to operate, but since the operating point is the cover handle, there is a risk of accidental opening during use, posing a significant safety hazard.

[0005] For the first type of cover lock, since the auxiliary lock mechanism is an independent hook and there is no automatic reaction force to lift the cover, it is necessary to manually lift the cover and manually turn the auxiliary lock at the same time. Often, the cover is not lifted with enough force or the cover is lifted with too much force, making it difficult to open the cover lock.

[0006] The second type of hood lock does not require lifting the hood and operating the auxiliary lock handle at the same time. However, since both the main lock and the auxiliary lock are opened through the hood latch inside the driver's cab, there is a safety hazard of accidental operation. In particular, if the hood latch is accidentally touched twice while driving, the hood will pop up instantly, and the windshield of the vehicle may be shattered, and the vehicle may lose control. Summary of the Invention

[0007] The purpose of this invention is to provide an integrated hood lock assembly to solve the problems of existing integrated hood locks mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an integrated cover lock assembly, comprising a lock body base plate, a lock ring, a ratchet, a pawl, a main lock opening rocker arm, a main lock opening rocker arm spring, a ratchet riveting plate, an auxiliary lock opening rocker arm, an auxiliary lock opening handle, a riveting shaft, a ratchet spring, an auxiliary lock rocker arm spring, and a pawl spring.

[0009] Using the above scheme, the present invention is safe and reliable. Both the first and second gear locks are engaged by the same ratchet. The first gear is unlocked using the cab hood opening handle, and the second gear is unlocked using the hood lock auxiliary handle at the front of the hood, reducing the risk of misoperation. After the first gear lock is released, the ratchet spring force can lift the hood to the second gear lock position. At this point, the hood has a certain height, effectively indicating to the driver, passengers, and relevant personnel that the hood is open. If a corresponding matching signal switch is present, it can provide an indication via electrical signal. After the second gear lock is released, the ratchet return spring provides sufficient spring force to automatically lift the hood, eliminating the need for manual lifting and avoiding the problem of the hood not being able to open due to insufficient or excessive lifting force during unlocking. The pawl is designed so that it can only be triggered by the auxiliary lock handle to unlock the second gear after the first gear lock is released. In the first gear lock position, due to the pawl's... The rotation position is separated from the auxiliary lock rocker arm transmission surface 2, and cannot be triggered by the auxiliary lock handle to unlock the first-level lock; the distance from the first-level limiting surface on the ratchet to the ratchet rotation shaft is smaller than that from the second-level limiting surface, so the first-level opening stroke of the pawl is smaller than that of the second-level opening stroke. When the pawl of the main lock opening rocker arm is separated from the first-level limiting surface, it is limited by the bottom plate limiting surface and cannot continue to open, ensuring that the ratchet can only be opened to the first level when opened by the main lock opening rocker arm; after the pawl is opened to the first-level unlocking position, since it has rotated to a position that can be triggered by the auxiliary lock rocker arm transmission surface 2, at this time, moving the auxiliary lock opening handle to unlock can continue to drive the pawl to rotate to a larger stroke, thereby opening the second-level lock with a larger stroke; under the premise of ensuring safety, the structure is simple and the positions are clear. Whether it is the first-level unlocking or the second-level unlocking, the cover can be automatically lifted, and the cover can be opened easily without the failure mode of getting stuck when opening the cover.

[0010] In a preferred embodiment, the ratchet includes a first-position lock and a second-position lock. The first-position lock is used to unlock the cab hood opening handle, and the second-position lock is used to unlock the hood lock auxiliary lock handle at the front end of the hood. Both the first-position lock and the second-position lock are locked by the same ratchet.

[0011] In a preferred embodiment, the pawl is provided with a pawl driven arm one and a pawl driven arm two at both ends. The pawl is configured such that it can only be unlocked by the auxiliary lock opening rocker arm to trigger the unlocking of the second gear after the first gear is unlocked. The distance from the first gear limiting surface on the ratchet to the ratchet rotation axis is smaller than that from the second gear limiting surface.

[0012] In a preferred embodiment, the ratchet, pawl, and main lock opening rocker arm are all riveted to the lock body base plate by riveting shafts and clamped and fixed by the ratchet riveting plate and the lock body base plate.

[0013] In a preferred embodiment, the ratchet, pawl, main lock opening rocker arm, and auxiliary lock opening rocker arm are respectively connected to a ratchet spring, a pawl spring, a main lock opening rocker arm spring, and an auxiliary lock opening rocker arm spring to limit their movement.

[0014] In a preferred embodiment, before the pawl reaches the first unlocking angle, there is a height difference between the pawl driven arm two and the auxiliary lock rocker arm transmission surface two in the direction of rotation axis, so it cannot be driven by the auxiliary lock opening rocker arm.

[0015] In a preferred embodiment, the pawl rotates to the first unlocking angle, and the pawl rotates from the second moving arm to the same plane as the transmission surface of the auxiliary lock rocker arm.

[0016] In a preferred embodiment, the auxiliary lock opening rocker arm is riveted to the ratchet riveting plate by a riveting shaft, and an auxiliary lock opening handle is installed on the top of the auxiliary lock opening rocker arm.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This integrated hood lock assembly is safe and reliable. Both the first and second locks are locked by the same ratchet. The first lock is unlocked by the cab hood opening handle, and the second lock is unlocked by the hood lock auxiliary lock handle at the front of the hood, which reduces the risk of misoperation.

[0019] After the first lock of this integrated hood lock assembly is unlocked, the hood can be lifted to the second lock position by the ratchet spring force. At this time, the hood has a certain height of lifting, which can effectively indicate to the driver, passengers and related personnel that the hood has been opened. If a corresponding matching signal switch is added, an indication can be given through an electrical signal.

[0020] After the two-position lock of this integrated cover assembly is unlocked, the ratchet return spring can provide sufficient elasticity to automatically lift the cover, without the need to manually lift the cover at the same time. This avoids the problem of the cover not being able to be opened due to insufficient or excessive force when unlocking.

[0021] The pawl of this integrated hood lock assembly is configured such that it can only be triggered by the auxiliary lock handle to unlock to the second position after the first position is unlocked. In the first position, the pawl is separated from the transmission surface of the auxiliary lock rocker arm due to its rotation position, and cannot be triggered by the auxiliary lock handle to unlock the first position.

[0022] The distance from the first-position limiting surface of the ratchet on the integrated cover lock assembly to the ratchet rotation shaft is smaller than that of the second-position limiting surface. Therefore, the first-position opening stroke of the pawl is smaller than that of the second-position opening stroke. When the pawl is separated from the first-position limiting surface by the main lock opening rocker arm, it is limited by the bottom plate limiting surface and cannot continue to open, ensuring that the ratchet can only be opened to the first position when it is opened by the main lock opening rocker arm.

[0023] After the pawl of this integrated hood lock assembly is opened to the first unlock position, it has already rotated to a position that can be triggered by the transmission surface of the auxiliary lock rocker arm. Therefore, when the auxiliary lock opening handle is moved to unlock, the pawl can continue to be driven to rotate to a greater stroke, thereby opening the second lock with a larger stroke.

[0024] This integrated cover lock assembly, while ensuring safety, features a simple structure and clear positions. Whether it is unlocking in the first or second position, the cover can be automatically lifted, making it easy to open without any malfunctions such as getting stuck when opening the cover. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall exploded structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the main lock state structure of the hood lock of the present invention;

[0028] Figure 4 This is a schematic diagram of the pawl's unreleased angle structure before reaching the first gear of the present invention;

[0029] Figure 5 This is a schematic diagram of the main lock opening rocker arm movement structure of the present invention;

[0030] Figure 6 This is a schematic diagram of the pawl rotating to the first unlocking angle of the present invention;

[0031] Figure 7 This is a schematic diagram of the ratchet unlocking ratchet structure of the present invention.

[0032] In the diagram: 1. Lock body base plate; 2. Lock ring; 3. Ratchet; 4. Pad driven arm one; 5. Pad driven arm two; 6. Pad; 7. Main lock opening rocker arm; 8. Main lock opening rocker arm spring; 9. Ratchet riveting plate; 10. Auxiliary lock opening rocker arm; 11. Auxiliary lock opening handle; 12. Riveting shaft; 13. Ratchet spring; 14. Auxiliary lock rocker arm spring; 15. Pad spring. Implementation

[0033] The present invention will be further described below with reference to embodiments.

[0034] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0035] Please see Figures 1-7 The present invention provides an integrated cover lock assembly, including a lock body base plate 1, a lock ring 2, a ratchet 3, a pawl 6, a main lock opening rocker arm 7, a main lock opening rocker arm spring 8, a ratchet riveting plate 9, an auxiliary lock opening rocker arm 10, an auxiliary lock opening handle 11, a riveting shaft 12, a ratchet spring 13, an auxiliary lock rocker arm spring 14, and a pawl spring 15.

[0036] Furthermore, the ratchet 3 includes a first-position lock and a second-position lock. The first-position lock is used to unlock the cab hood opening handle, and the second-position lock is used to unlock the hood lock auxiliary lock handle at the front of the hood. Both the first-position lock and the second-position lock are locked by the same ratchet 3. The pawl 6 has a pawl driven arm 1 4 and a pawl driven arm 2 5 at both ends. The pawl 6 is designed so that the second-position unlocking can only be triggered by the auxiliary lock opening rocker arm 10 after the first-position unlocking. The distance from the first-position limiting surface on the ratchet 3 to the rotation axis of the ratchet 3 is smaller than that from the second-position limiting surface. The pawl 6 and the main lock opening rocker arm 7 are riveted to the lock body base plate 1 by the riveting shaft 12, and clamped and fixed by the ratchet riveting plate 9 and the lock body base plate 1. The ratchet 3, pawl 6, main lock opening rocker arm 7 and auxiliary lock opening rocker arm 10 are respectively connected to the ratchet spring 13, pawl spring 15, main lock opening rocker arm spring 8 and auxiliary lock rocker arm spring 14 to limit their movement. The auxiliary lock opening rocker arm 10 is riveted to the ratchet riveting plate 9 by the riveting shaft 12. The auxiliary lock opening handle 11 is installed on the top of the auxiliary lock opening rocker arm 10.

[0037] Specifically, when the hood is closed, the locking ring 2 is pressed down by the inertial force of the hood onto the ratchet 3, causing the ratchet 3 to overcome the reaction force of the ratchet spring 13 and move to its lowest position. The pawl 6 rotates counterclockwise due to the rotational thrust of the pawl 6, but because the pawl 6 is continuously subjected to the clockwise elastic force of the pawl spring 15, it rotates until the ratchet 3 rotates to the point where the pawl 6 contacts its first-position limit surface. The pawl 6 then rotates clockwise to lock the ratchet 3, and the hood lock reaches the main lock state.Figure 3 As shown.

[0038] Before the pawl 6 reaches the first unlocking angle, the pawl driven arm 2 and the auxiliary lock rocker arm transmission surface 2 cannot be driven by the auxiliary lock opening rocker arm 10 due to the difference in height along their rotation axes. Therefore, the first lock position will not be opened by the auxiliary lock opening rocker arm 10. Figure 4 As shown.

[0039] When the hood latch is pulled, the main lock opening rocker arm 7 is activated. The main lock opening rocker arm 7, via the transmission surface, drives the pawl driven arm 4 on the pawl 6, causing the pawl 6 to rotate counterclockwise to unlock. Since the main lock opening rocker arm 7 cannot move further when it reaches the second-position limit surface, the pawl 6 can only move to the first-position unlocking angle. Due to a certain positional difference on the second-position limit surface of the ratchet 3, the second-position limit surface is locked again by the pawl 6 after the hood is opened to the second position. Figure 5 As shown.

[0040] Since pawl 6 has rotated to the first unlocking angle, the pawl driven arm 5 of pawl 6 has rotated to the same plane as the auxiliary lock rocker arm transmission surface 2. Therefore, pulling the auxiliary lock opening handle 11 at this time causes the auxiliary lock opening rocker arm 10 to drive the auxiliary lock rocker arm transmission surface 2, which in turn drives the pawl driven arm 5 to continue opening at the first unlocking angle position. Figure 6 As shown.

[0041] When the auxiliary lock rocker arm drive pawl 6 rotates counterclockwise again, pawl 6 unlocks ratchet 3, and ratchet 3, under the elastic force of ratchet spring 13, overcomes the weight of the cover and lifts the cover lock ring 2 until ratchet 3 contacts the limit surface of the lock body base plate 1. Since there is no ratchet 3 obstructing the lock ring 2, the cover is fully opened. There is no need to simultaneously lift the cover when unlocking the auxiliary lock and opening rocker arm 10. Figure 7 As shown, the entire process from closing the cover to opening it is completed, and the operation method is convenient and simple.

[0042] This invention is safe and reliable. The unlocking handles for the first and second gear locks of the hood are respectively located in the cab and at the front of the hood, reducing the risk of misoperation. Under the premise of ensuring safety, the structure is simple and the gears are clear. Whether it is unlocking in the first or second gear, the hood can be automatically lifted and opened easily without any malfunction mode of getting stuck when opening the hood.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated hood lock assembly, characterized in that, include: Lock body base plate (1), lock ring (2), ratchet (3), pawl (6), main lock opening rocker arm (7), main lock opening rocker arm spring (8), ratchet riveting plate (9), auxiliary lock opening rocker arm (10), auxiliary lock opening handle (11), rivet shaft (12), ratchet spring (13), auxiliary lock rocker arm spring (14), pawl spring (15). The ratchet (3) includes a first lock and a second lock. The first lock is used to unlock the cab hood opening handle, and the second lock is used to unlock the hood lock auxiliary lock handle at the front end of the hood. Both the first lock and the second lock are locked by the same ratchet (3). The pawl (6) is provided with a pawl follower arm one (4) and a pawl follower arm two (5) at both ends. The pawl (6) is configured to be triggered by the auxiliary lock opening rocker arm (10) to unlock the second gear only after the first gear is unlocked. The distance from the first gear limiting surface on the ratchet (3) to the ratchet (3) rotation axis is smaller than that from the second gear limiting surface. The ratchet (3), pawl (6) and main lock opening rocker arm (7) are all riveted to the lock body base plate (1) by the riveting shaft (12) and clamped and fixed by the ratchet riveting plate (9) and the lock body base plate (1); The auxiliary lock opening rocker arm (10) is riveted to the ratchet riveting plate (9) by a riveting shaft (12), and an auxiliary lock opening handle (11) is installed on the top of the auxiliary lock opening rocker arm (10).

2. The integrated hood lock assembly according to claim 1, characterized in that, The ratchet (3), pawl (6), main lock opening rocker arm (7) and auxiliary lock opening rocker arm (10) are respectively connected to ratchet spring (13), pawl spring (15), main lock opening rocker arm spring (8) and auxiliary lock opening rocker arm spring (14) to limit their movement.

3. The integrated hood lock assembly according to claim 1, characterized in that, Before the pawl (6) reaches the first unlocking angle, there is a height difference between the pawl driven arm (5) and the auxiliary lock rocker arm transmission surface (2) in the direction of rotation axis, so it cannot be driven by the auxiliary lock opening rocker arm (10).

4. The integrated hood lock assembly according to claim 1, characterized in that, The pawl (6) rotates to the first unlocking angle, and the pawl (6) rotates from the second moving arm (5) to the same plane as the auxiliary lock rocker arm transmission surface.

Images