Engine hood lock and vehicle

Abstract

The present application relates to the technical field of automobile parts. In particular, provided are an engine hood lock and a vehicle. The engine hood lock of the present application comprises a lock body and a lock catch, and the lock body comprises a lock body bracket, a lock hook and a cable transmission mechanism, wherein the lock hook is disposed on a first rotating shaft, and a first elastic member is provided between the lock hook and the lock body bracket; the lock hook is provided with a first engaging portion, a second engaging portion and a lock opening, the lock catch extending into the lock opening can drive the lock hook to rotate to a locked position in a locking direction, and the first elastic member can drive the lock hook to sequentially rotate from the locked position to a preliminarily unlocked position and a fully unlocked position in an unlocking direction; and the cable transmission mechanism can be operated to snap-fit with the first engaging portion to lock the lock hook in the locked position, or to snap-fit with the second engaging portion to lock the lock hook in the preliminarily unlocked position. The engine hood lock of the present application provides a hood lock structure that can be operated from inside a driver's cabin to fully unlock the lock catch.

Description

Engine hood lock and vehicle

[0001] The present application claims priority to the application No. 202411381965.X, filed on September 30, 2024, with the Chinese Patent Office, and entitled "Engine hood lock and vehicle", the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of automobile accessories, in particular to an engine hood lock. In addition, the present application also relates to a vehicle. BACKGROUND

[0003] The conventional hood lock generally achieves the unlocking function through a pull wire. When the pull wire is pulled, the lock hook slightly rotates to achieve a preliminary unlocking state; at this moment, the operator needs to manually turn a wrench at the lower front end of the engine hood to drive the lock hook to rotate again to completely unlock, and then lift the engine hood upward to make the lock catch completely separate from the lock body, so that the engine hood can be opened. The entire operation process is relatively cumbersome and has a certain degree of difficulty; which affects the user's experience of using the vehicle. SUMMARY

[0004] Therefore, the present application aims to provide an engine hood lock which can be operated in the cockpit to completely unlock the lock catch.

[0005] To achieve the above-mentioned purpose, the technical solution of the present application is as follows:

[0006] An engine hood lock, comprising a lock body and a lock catch; the lock body comprises a lock body support, a lock hook and a latch transmission mechanism provided on the lock body support, the lock hook is rotatable on the lock body support, and a first elastic member is provided between the lock hook and the lock body support; the lock hook is provided with a first clamping portion, a second clamping portion and a lock port, the lock catch extending into the lock port can drive the lock hook to rotate in a locking direction and reach a locking position for locking the lock catch on the lock body support; the first elastic member can drive the lock hook to rotate in an unlocking direction and sequentially reach a preliminary unlocking position allowing the lock catch to retreat to the outlet of the lock port, and a completely unlocking position allowing the lock catch to move out of the lock port; the latch transmission mechanism can be controllably clamped with the first clamping portion to lock the lock hook at the locking position, or clamped with the second clamping portion to lock the lock hook at the preliminary unlocking position.

[0007] Further, a lock hook sheath is sleeved on the lock hook, and the lock hook sheath at least covers the part of the lock port in contact with the lock catch.

[0008] Further, the lock body support is provided with a first rotating shaft and a second rotating shaft arranged in parallel, and the lock hook is arranged on the first rotating shaft; the zipper transmission mechanism comprises a lock hook clamping piece arranged on the second rotating shaft, a second elastic member arranged between the lock hook clamping piece and the lock body support, and a pull line transmissionally connected to the lock hook clamping piece; the second elastic member is used to drive the lock hook clamping piece to be close to the lock hook to keep the lock state of the lock hook, and the pull line is used to pull the lock hook clamping piece away from the lock hook to release the lock of the lock hook.

[0009] Further, the zipper transmission mechanism further comprises a transmission frame arranged on the second rotating shaft, and the pull line is connected to the transmission frame to pull the transmission frame to rotate; the transmission frame is provided with a driving tab, and the driving tab is inserted into the lock hook clamping piece to drive the lock hook clamping piece to rotate synchronously with the transmission frame; the second elastic member comprises a first rotary torsion spring sleeved on the second rotating shaft, and the first rotary torsion spring is elastically arranged on the transmission frame to drive the transmission frame to drive the lock hook clamping piece to rotate to the lock state.

[0010] Further, the zipper transmission mechanism further comprises a reset plate and a second rotary torsion spring arranged on the first rotating shaft, and the reset plate is transmissionally connected to the transmission frame; when the pull line pulls the transmission frame to rotate, the reset plate can be driven to rotate synchronously to move away from an initial position; the second rotary torsion spring is arranged between the lock body support and the reset plate, and can drive the reset plate to return to the initial position after the pulling force of the pull line is released.

[0011] Further, the transmission frame is provided with a supporting tab extending towards the first rotating shaft, and the reset plate is provided with a reset tab abuttingly matched with the supporting tab; when the pull line pulls the transmission frame to rotate, the supporting tab drives the reset tab to realize the transmission of the reset plate and the transmission frame.

[0012] Further, the lock body support comprises a front support and a rear support, and the front support and the rear support are fixedly connected as a whole by the first rotating shaft and the second rotating shaft.

[0013] Further, the lock hook is further provided with a limiting portion, and when the lock hook rotates to the completely unlocked position along the unlocking direction, the limiting portion abuts on the lock hook clamping piece to limit the continuous rotation of the lock hook.

[0014] Further, the limiting portion, the first clamping portion and the second clamping portion are all arranged on an arc with the first rotating shaft as the center.

[0015] Furthermore, it also includes a lock position detection unit; the lock position detection unit issues a first signal when the lock hook locks the latch onto the lock body bracket, and issues a second signal when the lock hook is in the initial unlock position.

[0016] Furthermore, the lock position detection unit includes a sensor and a trigger frame disposed on the lock body bracket, and a third elastic element acting between the trigger frame and the lock body bracket; the sensor is fixedly mounted on the lock body bracket, and the trigger frame is rotatable between a first position and a second position; the trigger frame is held in the first position by the action of the third elastic element and triggers the sensor to emit the first signal; the latch extending into the lock slot and locked on the lock body bracket can drive the trigger frame to rotate to the second position and trigger the sensor to emit the second signal.

[0017] Furthermore, the trigger frame is provided with a pressure platform and a pressure plate. When the latch extends into the lock and is locked onto the latch, the latch pushes the pressure platform to drive the trigger frame to rotate; the pressure plate is used to trigger the sensor to operate.

[0018] Furthermore, the third elastic element includes a tension spring that is hung between the lock body bracket and the trigger frame, and the trigger frame is provided with a tension spring hook for hanging the tension spring.

[0019] Furthermore, the third elastic element also includes a third rotary torsion spring sleeved on the rotating shaft of the trigger frame, with both ends of the third rotary torsion spring acting on the lock body bracket and the trigger frame, respectively.

[0020] Compared with related technologies, this application has the following advantages:

[0021] The engine hood lock of this application features two engaging structures on the lock hook: a first locking part and a second locking part, corresponding to the locked position and the initial unlocked position of the lock hook, respectively. When the pull-lock transmission mechanism engages with the first locking part, the lock hook is locked in the locked position, achieving complete locking of the latch. Operating the pull-lock transmission mechanism to disengage from the first locking part and engage with the second locking part locks the lock hook in the initial unlocked position, allowing the latch to reach a position near the lock opening outlet, achieving initial unlocking. When the pull-lock transmission mechanism is operated again to disengage from the second locking part, the lock hook, driven by the first elastic element, continues to rotate in the unlocking direction to reach the fully unlocked position, allowing the latch to be completely removed from the lock opening and disengaged from the lock body. Both unlocking operations of the pull-lock transmission mechanism can be completed from inside the cockpit via a cable or similar mechanism, thus providing a hood lock structure that can be operated from inside the cockpit to fully unlock the latch.

[0022] Furthermore, two rotating shafts are arranged in parallel on the lock body support, a lock hook and a zipper transmission mechanism are arranged respectively, the lock hook catch rotating on the second rotating shaft can be hooked or separated from the lock hook well, the position locking of the lock hook is realized, and a compact and good locking and transmission structure is formed. The transmission support can fully facilitate the force effect of the lever principle to lift the pull wire and improve the driving force of the rotation of the lock hook catch. The driving tab and the supporting slot are inserted and matched between the transmission support and the lock hook catch, the transmission structure of synchronous rotation of the lock hook catch and the transmission support is realized in a small space, and the size of the lock body is optimized.

[0023] Another purpose of the present application is to provide a vehicle provided with the engine hood lock. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the schematic embodiments of the present application and their descriptions are used to explain the present application. The front and back, up and down, and other orientation words involved in the present application only represent relative positional relationships, and do not constitute undue limitations on the present application. In the drawings:

[0025] Fig. 1 is a schematic diagram of the overall structure of the engine hood lock according to the embodiment of the present application;

[0026] Fig. 2 is an exploded view of the engine hood lock according to the embodiment of the present application;

[0027] Fig. 3 is a schematic diagram of the structure of the engine hood lock according to the embodiment of the present application from another perspective;

[0028] Fig. 4 is a schematic diagram of the transmission structure of the transmission support, the lock hook catch, the lock hook, and the reset plate according to the embodiment of the present application;

[0029] Fig. 5 is a schematic diagram of the state structure of the engine hood lock according to the embodiment of the present application when the lock hook is in a locked position;

[0030] Fig. 6 is a schematic diagram of the state structure of the engine hood lock according to the embodiment of the present application from another side of Fig. 5;

[0031] Fig. 7 is a schematic diagram of the state structure of the engine hood lock according to the embodiment of the present application when the lock hook is in a preliminary unlocking position;

[0032] Fig. 8 is a schematic diagram of the triggering state of the trigger support to the sensor in the state shown in Fig. 7;

[0033] Fig. 9 is a schematic diagram of the state structure of the engine hood lock according to the embodiment of the present application from another side of Fig. 7;

[0034] Fig. 10 is a schematic diagram of the state structure of the engine hood lock according to the embodiment of the present application when the lock hook is in a completely unlocked position;

[0035] Fig. 11 is a schematic view of the structure of the other side of the engine hood lock shown in Fig. 10.

[0036] Explanation of reference numerals:

[0037] 1, lock catch; 10, fixing seat; 100, mounting hole;

[0038] 2, lock body support; 20, front support; 200, insertion hole; 21, rear support; 210, insertion plate;

[0039] 3, zipper transmission mechanism; 30, pull cord; 300, pull cord sheath; 31, transmission frame; 310, connecting hole; 311, driving tab; 312, bearing tab; 32, first rotary torsion spring; 33, reset plate; 330, reset tab; 34, second rotary torsion spring;

[0040] 4, lock hook clamp; 40, bearing slot; 41, clamping head;

[0041] 5, lock hook; 50, lock hook sheath; 500, lock opening; 51, first clamping portion; 52, second clamping portion; 53, limiting portion; 54, unlocking torsion spring;

[0042] 61, first rotating shaft; 62, second rotating shaft;

[0043] 7, lock position detection unit; 70, sensor; 700, elastic pressing piece; 71, triggering frame; 710, bearing platform; 711, pressing plate; 712, pull spring hook; 72, pull spring; 73, third rotary torsion spring;

[0044] 800, locking position; 801, preliminary unlocking position; 802, fully unlocking position. DETAILED DESCRIPTION

[0045] In order to make the technical solutions of the present application and the advantages thereof clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0046] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0047] In the description of the present application, it should be stated that if the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like appear, they are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Taking the vehicle described in the present application as an example, the orientation words used in the embodiments such as "upper", "lower", "left", "right", "front", "back" are defined based on the up-down direction (also called height direction), left-right direction (also called width direction) and front-rear direction (also called length direction) of the vehicle. Specifically, as shown in the drawings, the X direction is the front-rear direction of the vehicle, wherein the side pointed by the arrow is "front", and vice versa is "back". The Y direction is the left-right direction of the vehicle, wherein the side pointed by the arrow is "left", and vice versa is "right". The Z direction is the up-down direction of the vehicle, wherein the side pointed by the arrow is "up", and vice versa is "down". "Inner" and "outer" are defined based on the outline of the corresponding component, for example, "inner" and "outer" are defined based on the outline of the vehicle, the side close to the middle of the vehicle is "inner", and vice versa is "outer". The rotation direction indicated by a is the clockwise direction from the front side view, which is also the locking direction of the lock hook; vice versa is the unlocking direction (counterclockwise direction).

[0048] In addition, in the description of the present application, unless otherwise explicitly limited, the terms "mount", "connect", "connection", "connector" should be understood broadly. For example, the connection can be a fixed connection, or a detachable connection, or an integral connection; can be a mechanical connection, or an electrical connection; can be a direct connection, or an indirect connection through an intermediate medium, or a communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application in combination with the specific circumstances. In the description of the present application, the limiting terms "first", "second", "A", "B", "C", "D" and the like appear, which are only for distinguishing different positions, attributions or uses of the same features, to avoid ambiguity and confusion in the description, and cannot be understood as indicating or implying relative importance.

[0049] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] No matter fuel vehicle or new energy vehicle, some important components will be arranged in the front compartment of the front part of the vehicle; for example, the engine, transmission and the like of the fuel vehicle, the air conditioning system, the control system and the like of the electric vehicle will be arranged in the front compartment. An engine cover is arranged above the front compartment, and the engine cover needs to be locked and fixed with the vehicle body by the hood lock. Generally, the lock catch of the hood lock is arranged on the engine cover, and the lock body of the hood lock is installed on the vehicle body frame of the front compartment; when the engine cover is closed downward, the lock catch will extend into the lock hole on the lock body and be locked and fixed in the lock hole by the lock hook, so as to achieve the locking and fixing of the engine cover.

[0051] The traditional hood lock generally realizes the unlocking function by pulling the wire. When the wire is pulled, the lock hook is slightly rotated to achieve the preliminary unlocking state; at this moment, the operator needs to manually operate the wrench under the front end of the engine cover to drive the lock hook to rotate again to completely unlock, and then lift the engine cover upward so that the lock catch is completely separated from the lock body, and the engine cover can be opened. The whole operation process is relatively complicated and has a certain difficulty; the use experience of the user on the vehicle is affected. In view of the above problems existing in the related art, the present application innovatively proposes a brand-new cup holder storage structure, which can provide a cup holder structure that saves arrangement space and can be stored.

[0052] In the following, the present application will be specifically described through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0053] The embodiment of the first aspect of the present application provides an engine hood lock which can be operated in the cockpit to completely unlock the lock catch 1; an exemplary structure thereof is shown in FIGS. 1, 2, 3 and 4.

[0054] Overall, the engine hood lock includes a lock body and a lock catch 1, the lock body includes a lock body support 2, and a lock hook 5 and a latch transmission mechanism 3 arranged on the lock body support 2; at the same time, the lock hook 5 is rotatable on the lock body support 2, and a first elastic member is arranged between the lock hook 5 and the lock body support 2.

[0055] The lock hook 5 is provided with a first clamping portion 51, a second clamping portion 52 and a lock opening 500. The lock catch 1 inserted into the lock opening 500 can drive the lock hook 5 to rotate in the locking direction and reach a locking position 800 where the lock catch 1 is locked on the lock body support 2. The first elastic member can drive the lock hook 5 to rotate in the unlocking direction and reach, in sequence from the locking position 800, a preliminary unlocking position 801 where the lock catch 1 is allowed to retreat to the outlet of the lock opening 500, and a complete unlocking position 802 where the lock catch 1 is allowed to move out of the lock opening 500. Meanwhile, the pull lock transmission mechanism 3 can be controllably clamped with the first clamping portion 51 to lock the lock hook 5 at the locking position 800, or clamped with the second clamping portion 52 to lock the lock hook 5 at the preliminary unlocking position 801.

[0056] Specifically, the lock body support 2 is provided with a first rotating shaft 61, and the lock hook 5 is arranged on the first rotating shaft 61. The first elastic member is an unlocking torsion spring 54 sleeved on the first rotating shaft 61. When the lock hook 5 is at the locking position 800, the lock hook 5 can lock the lock catch 1 on the lock body support 2. When the lock hook 5 is at the preliminary unlocking position 801, the lock hook 5 allows the lock catch 1 to retreat to the outlet of the lock opening 500. When the lock hook 5 is at the complete unlocking position 802, the lock hook 5 allows the lock catch 1 to move out of the lock opening 500.

[0057] It should be noted that, based on the overall design idea described above, the technical solution of the present application can adopt various different specific implementation structures, forms or configuration sequences. For example, the lock body support 2 described above can adopt an integrated structure or a split structure. The pull lock transmission mechanism 3 can adopt a pull wire driving mode or a motor driving mode. The specific arrangement sequence, device mode, etc. of the lock hook 5, the lock hook clamp 4 and the pull lock transmission mechanism 3 on the lock body support 2 can also be flexibly adjusted. For the parts required by the overall scheme implementation but not involved in the overall setting described above, reasonable and flexible design can be made by referring to the mature setting means in the field, the actual situation during implementation, etc.

[0058] The specific implementation scheme described in the present embodiment is only one of the relatively optimal schemes formed by various combinations and changes described above. In actual implementation, the person skilled in the art can make flexible adjustment and improvement in combination with the actual situation. Obviously, various specific form combinations and changes described above can form many schemes, and the specific implementation scheme of the present embodiment is within the protection scope of the present application.

[0059] Specifically, as shown in FIG. 5, in the present embodiment, the first elastic member adopts the mode of the unlocking torsion spring 54 sleeved on the first rotating shaft 61. One end of the unlocking torsion spring 54 acts on the lock body support 2, and the other end acts on the lock hook 5, so as to give the lock hook 5 enough rotating driving force in the unlocking direction.

[0060] And, the lock hook 5 of the embodiment is sleeved with a lock hook sheath 50, the size of the lock hook sheath 50 can be flexibly set, and the lock hook sheath 50 can at least cover the part of the lock hole 500 in contact with the lock catch 1. By sleeving the lock hook 5 with the lock hook sheath 50, the surface of the lock hook 5 can be protected, and flexible contact between the lock hook 5 and the lock catch 1 can be realized, avoiding the hard collision between the lock catch 1 and the lock hook 5 to cause abnormal sound, surface damage and other conditions.

[0061] The specific structure of the first clamping portion 51 and the second clamping portion 52 can be flexibly designed, and the design can be based on the principle that it can be clamped with the lock hook clamp 4 to achieve locking. In the embodiment, the first clamping portion 51 and the second clamping portion 52 are both protrusions integrally formed on the lock hook 5, and the two protrusions are arranged at intervals on an arc with the first pivot 61 as the center. Correspondingly, the end of the lock hook clamp 4 is provided with a clamping head 41, which can be hooked on the first clamping portion 51 or the second clamping portion 52 to prevent the lock hook 5 from rotating towards the unlocking direction.

[0062] At the same time, in order to facilitate the lock catch 1 to smoothly rotate from the fully unlocked position 802 to the locking position 800 during the process of being inserted into the lock hole 500, the side of the first clamping portion 51 and the second clamping portion 52 facing the clamping head 41 should be provided with an arc-shaped guide surface to facilitate the lock hook clamp 4 to move away from the lock hook 5, thereby facilitating the first clamping portion 51 or the second clamping portion 52 to pass the clamping head 41.

[0063] In addition, a limiting portion 53 can also be provided on the lock hook 5, which is arranged similarly to the first clamping portion 51 and the second clamping portion 52, and is arranged at intervals on an arc with the first pivot 61 as the center. When the lock hook 5 rotates to the fully unlocked position 802 in the unlocking direction, the limiting portion 53 abuts against the lock hook clamp 4, thereby limiting the further rotation of the lock hook 5. By providing the limiting portion 53 on the lock hook 5 and using the lock hook clamp 4 to block the limiting portion 53, the rotation of the lock hook 5 in the unlocking direction can be limited, so that the lock hook 5 can be accurately positioned at the fully unlocked position 802.

[0064] In order to facilitate the assembly of the lock body, the lock body support 2 is preferably of a split structure, i.e. designed as two parts that are integrated in front and back in the direction X as shown in FIG. 2, specifically including a front support 20 and a rear support 21. The front support 20 is provided with a plug-in hole 200, and a plug-in plate 210 is provided on the rear support 21, which is inserted into the plug-in hole 200 to realize the positioning assembly between the front support 20 and the rear support 21. At the same time, the first pivot 61 and the first pivot 61 arranged in the X direction firmly connect the front support 20 and the rear support 21 as a whole.

[0065] In addition, in order to facilitate the installation of the lock body support 2 on the vehicle body frame, a plurality of mounting holes can be provided on the front support 20 and the rear support 21. Meanwhile, in order to provide stable action points for the unlocking torsion spring 54 and the first rotary torsion spring 32, the reset plate 33, the tension spring 72 and the third rotary torsion spring 73 described below on the lock body support 2, hooking holes, protrusions and other structures can be provided at appropriate positions to facilitate the end of the spring to act on the lock body support 2 firmly. With respect to the installation of the lock body support 2 on the vehicle body frame, the lock catch 1 can be fixed to the engine cover through the fixing seat 10. Two mounting holes 100 are provided on the fixing seat 10, and the fixing seat 10 is fastened to the engine cover at an appropriate position through bolts, rivets or other fastening methods.

[0066] In addition, the lock body support 2 of the present embodiment is also provided with a second rotation shaft 62 arranged in parallel with the first rotation shaft 61. The zipper transmission mechanism 3 includes a lock hook clamp 4 provided on the second rotation shaft 62, a second elastic member acting between the lock hook clamp 4 and the lock body support 2, and a pull wire 30 transmission connected to the lock hook clamp 4. The second elastic member is used to drive the lock hook clamp 4 to approach the lock hook 5 to maintain the locking state of the lock hook 5, and the pull wire 30 is used to pull the lock hook clamp 4 away from the lock hook 5 to release the locking of the lock hook 5.

[0067] Two rotation shafts are arranged in parallel on the lock body support 2, and the lock hook 5 and the zipper transmission mechanism 3 are arranged respectively. The lock hook clamp 4 rotating on the second rotation shaft 62 can be well hooked or separated from the lock hook 5 to realize the position locking of the lock hook 5, forming a compact and good locking and transmission structure.

[0068] Specifically, as shown in FIG. 4 and in combination with FIGS. 5 to 11, the zipper transmission mechanism 3 of the present embodiment further includes a transmission frame 31 provided on the second rotation shaft 62, and the pull wire 30 is connected to the transmission frame 31 to pull the transmission frame 31 to rotate. The transmission frame 31 is provided with a driving tab 311 inserted into the lock hook clamp 4 to drive the lock hook clamp 4 to rotate synchronously with the transmission frame 31. The second elastic member includes a first rotary torsion spring 32 sleeved on the second rotation shaft 62, which elastically acts on the transmission frame 31 to drive the transmission frame 31 to rotate with the lock hook clamp 4 to the locking state.

[0069] Of course, the zipper transmission mechanism 3 can also be driven by a motor in addition to the pull wire 30 driving mode. When the pull wire 30 driving mode is adopted, the pull wire sheath 300 of the pull wire 30 is fixed on the lock body support 2, and the end of the pull wire 30 is arranged in the connecting hole 310 on the transmission frame 31. When the pull wire 30 is pulled, the transmission frame 31 is driven to rotate relative to the lock body support 2, and the lock hook clamp 4 is driven to rotate synchronously to temporarily release the locking of the lock hook 5.

[0070] The transmission frame 31 is arranged to fully facilitate the lever principle to enhance the pulling force of the pull wire 30, and to enhance the driving force for rotating the lock hook clamp 4; the transmission frame 31 and the lock hook clamp 4 are connected through the plug-in cooperation of the driving tab 311 and the receiving tab slot 40, and the transmission structure is arranged to realize the synchronous rotation of the lock hook clamp 4 and the transmission frame 31 in a small space, which is beneficial to optimizing the size of the lock body; the first rotary torsion spring 32 is arranged between the lock body support 2 and the transmission frame 31, and when the pull wire 30 is released, the elastic force of the first rotary torsion spring 32 can drive the transmission frame 31 and the lock hook clamp 4 to rotate to the initial position, thereby realizing the automatic reset function and ensuring the locking state between the lock hook clamp 4 and the lock hook 5.

[0071] Based on the above arrangement, the reset plate 33 can also be arranged in the zipper puller transmission mechanism 3. Specifically, the reset plate 33 and the second rotary torsion spring 34 are sleeved on the first rotating shaft 61, the reset plate 33 is connected with the transmission frame 31, and the second rotary torsion spring 34 is elastically arranged between the lock body support 2 and the reset plate 33. The transmission frame 31 is provided with a receiving plate 312 extending towards the first rotating shaft 61, and the reset plate 33 is provided with a reset tab 330 abutting with the receiving plate 312. When the transmission frame 31 is rotated by the pull wire 30, the receiving plate 312 will drive the reset tab 330, thereby driving the reset plate 33 to rotate synchronously and move away from the initial position; when the pull wire 30 is released, the reset plate 33 is driven to return to the initial position by the second rotary torsion spring 34, thereby driving the lock hook 5 and the lock hook clamp 4 to return to the initial position synchronously.

[0072] The reset plate 33 is arranged in the zipper puller transmission mechanism 3, and the elastic force of the second rotary torsion spring 34 can provide good assistance for the rotary reset of the transmission frame 31 and the lock hook clamp 4, thereby ensuring the stable realization of the rotary reset function of the lock hook clamp 4, so as to ensure that the lock hook clamp 4 can quickly return to the locking state after the pull wire 30 is released, and the lock hook 5 is locked in the expected position.

[0073] As shown in FIG. 8, the engine hood lock of the embodiment further includes a lock position detection unit 7; the lock position detection unit 7 is used to detect the position of the lock catch 1 and the lock hook 5. When the lock hook 5 locks the lock catch 1 on the lock body support 2, the lock position detection unit 7 sends a first signal; when the lock hook 5 is in the preliminary unlocking position 801, the lock position detection unit 7 sends a second signal. By arranging the lock position detection unit 7, the position of the lock catch 1 and the position of the lock hook 5 can be known in real time; not only is it convenient for the driver to know the unlocking condition of the engine hood in time, but also it provides an accurate control signal for the electric driving opening control of the engine hood.

[0074] Specifically, as shown in FIGS. 5-11, the locking position detecting unit 7 comprises a sensor 70 and a trigger frame 71 arranged on the lock body support 2, and a third elastic member acting between the trigger frame 71 and the lock body support 2. The sensor 70 can be a travel switch, and the third elastic member is preferably a tension spring 72 or a third rotary torsion spring 73, or both the tension spring 72 and the third rotary torsion spring 73 can be used; when the tension spring 72 is used, the two ends of the tension spring 72 are respectively hung on the trigger frame 71 and the lock body support 2, and when the third rotary torsion spring 73 is used, the third rotary torsion spring 73 and the trigger frame 71 can be sleeved on the second rotary shaft 62, and the two ends of the third rotary torsion spring 73 respectively act on the lock body support 2 and the trigger frame 71.

[0075] The trigger frame 71 is provided with a pressure receiving platform 710, a pressure plate 711 and a tension spring hook 712. When the lock catch 1 extends into the lock opening 500 and is locked on the lock catch 1, the lock catch 1 pushes the pressure receiving platform 710 to drive the trigger frame 71 to rotate, the pressure plate 711 is used to trigger the sensor 70 to act, and the tension spring hook 712 is used to hang the tension spring 72. The trigger frame 71 can rotate between a first position and a second position within a certain rotation angle range. The trigger frame 71 is kept at the first position by the action of the third elastic member, at this moment, the pressure plate 711 presses the elastic pressure piece 700, and the trigger sensor 70 sends out a first signal. When the lock catch 1 extends into the lock opening 500 and is locked on the lock body support 2, the lock catch 1 pushes down the pressure receiving platform 710, drives the trigger frame 71 to rotate clockwise away from the first position to the second position, and the pressure plate 711 leaves the elastic pressure piece 700, so that the trigger sensor 70 sends out a second signal.

[0076] The trigger frame 71 is arranged on the lock body support 2, and the trigger frame 71 is limited at the first position by the elastic restraint of the third elastic member, and the trigger frame 71 is rotated by the lock catch 1 when entering the lock opening 500 and being locked on the lock body support 2 to reach the second position. The trigger frame 71 in different positions can trigger different states of the sensor 70, and then different signals are sent out, so that the position of the lock catch 1 and the locking state of the lock hook 5 can be known in time. The above setting form not only has a simple and effective overall structure, but also is convenient for technical implementation.

[0077] Moreover, by configuring the elastic members such as the tension spring 72 and the third rotary torsion spring 73, when the lock hook 5 rotates to the preliminary unlocking position 801 or the completely unlocking position 802, the lock catch 1 retreats to the outlet of the lock opening 500 or completely separates from the lock body; the lock catch 1 completely separates from the pushing of the trigger frame 71, and the trigger frame 71 can quickly rotate and reset to the first position under the action of the above elastic members, so that the signal switching of the sensor 70 can be accurately realized.

[0078] In summary, the engine hood lock of the embodiment can lock the lock hook 5 at the locking position 800 by the first clamping part 51 and the second clamping part 52, and can lock the lock hook 5 at the preliminary unlocking position 801 by the second clamping part 52, so as to achieve complete locking and preliminary unlocking of the lock catch 1.

[0079] When the puller 3 is operated again to be separated from the second clamping part 52, the lock hook 5 can continue to rotate in the unlocking direction under the driving of the first elastic member to reach the completely unlocking position 802, so as to make the lock catch 1 completely move out of the lock hole 500 and be separated from the lock body. The unlocking operation of the puller 3 can be completed in the cockpit by the pull wire 30 and the like, so as to provide a hood lock structure which can be operated in the cockpit to completely unlock the lock catch 1.

[0080] The embodiment of the second aspect of the application provides a vehicle, and the vehicle is provided with the engine hood lock provided in the embodiment one.

[0081] With the engine hood lock, the driver can first operate the hood catch handle in the cockpit, the lock hook 5 is released by the lock hook clamp 4 and rotates to the preliminary unlocking position 801 to preliminarily unlock the lock catch 1, and then the hood catch handle is operated again, the lock hook 5 is released by the lock hook clamp 4 and rotates to the completely unlocking position 802 to completely unlock the lock catch 1.

[0082] Based on the setting of the lock position detection unit 7, an electric driving mechanism can be configured for the opening of the engine hood, and when the signal emitted by the lock position detection unit 7 changes from the first signal to the second signal (the switching signal changes), and the hood catch handle is operated twice in succession, the control electric driving mechanism drives the engine hood to open, so as to realize the automatic opening function of the engine hood and eliminate the manual operation of opening the engine hood.

[0083] Based on the overall setting of the engine hood lock, the position state of each position in the locking and unlocking process is as follows:

[0084] As shown in FIGS. 5 and 6, when the engine hood is closed, the lock catch 1 extends into the lock hole 500 and applies a downward force to the pressure bearing table 710, and the lock hook 5 rotates clockwise to the locking position 800, so that the lock catch 1 is locked to the lock body support 2; due to the pushing of the lock catch 1 to the pressure bearing table 710, the trigger frame 71 rotates clockwise, the tension spring 72 is stretched, the pressure plate 711 is separated from the elastic pressing sheet 700, and the trigger sensor 70 emits the second signal.

[0085] After the lock catch 1 is locked on the lock body support 2, without any external force applied to the pull wire 30, the first rotary torsion spring 32 exerts a counterclockwise force on the transmission frame 31 around the second rotation shaft 62, the transmission frame 31 drives the lock hook clamp 4 to generate a counterclockwise movement trend around the second rotation shaft 62, the clamping head 41 of the lock hook clamp 4 is tightly clamped on the first clamping portion 51, and the counterclockwise force exerted by the unlocking torsion spring 54 on the lock hook 5, so as to lock the lock hook 5 in the locked position 800.

[0086] When the driver first applies an external force to the pull wire 30 through the hood knob inside the vehicle, the transmission frame 31 drives the lock hook clamp 4 to move clockwise around the second rotation shaft 62 against the force of the first rotary torsion spring 32, the clamping head 41 of the lock hook clamp 4 is disengaged from the first clamping portion 51, and the force exerted by the unlocking torsion spring 54 on the lock hook 5 makes it rotate counterclockwise around the first rotation shaft 61, the lock catch 1 moves upward to reach the state as shown in FIGS. 7 to 9.

[0087] After the pull wire 30 is released, the reset plate 33 rotates clockwise around the first rotation shaft 61 under the action of the second rotary torsion spring 34, the transmission frame 31 rotates counterclockwise around the second rotation shaft 62 under the action of the reset plate 33 and the first rotary torsion spring 32 to return to the initial position, and drives the lock hook clamp 4 to rotate counterclockwise to be clamped with the second clamping portion 52, so as to lock the lock hook 5 in the preliminary unlocking position 801.

[0088] At the same time, since the lock catch 1 leaves the pressure bearing table 710, the trigger frame 71 rotates counterclockwise around the second rotation shaft 62 under the action of the tension spring 72 and the third rotary torsion spring 73, the pressing plate 711 returns to the elastic pressing sheet 700 to press the elastic pressing sheet 700, the trigger sensor 70 sends out a first signal, the sensor 70 can transmit the signal to the vehicle through the cabin wire harness, and can be indicated by lighting the hood opening signal lamp. A limiting structure can be arranged between the trigger frame 71 and the lock body support 2 to limit the rotation range of the trigger frame 71 between the first position and the second position.

[0089] As shown in FIGS. 10 and 11, when the driver again pulls the pull wire 30 through the hood knob inside the vehicle, the transmission frame 31 drives the lock hook clamp 4 to move clockwise around the second rotation shaft 62 against the force of the first rotary torsion spring 32, the lock hook clamp 4 is disengaged from the second clamping portion 52, and the force exerted by the unlocking torsion spring 54 on the lock hook 5 makes it rotate counterclockwise around the first rotation shaft 61, at the same time, the lock catch 1 moves upward to completely leave the lock opening 500, and the complete unlocking is achieved.

[0090] When the pull wire 30 is released, under the action of the reset plate 33, the second rotary torsion spring 34, the first rotary torsion spring 32 and the like, the transmission frame 31 and the lock hook clamp 4 return to the initial position, and are clamped and matched with the limiting portion 53, so that the lock hook 5 is locked in the fully unlocked position 802. At this time, the entire opening and closing process of the engine cover is completed, and when the engine cover is closed and opened again, the above process is repeated.

[0091] It can be seen that the engine cover lock of the present application is configured on the vehicle, which provides a good control condition for the opening operation of the engine cover, is beneficial to simplify the entire operation process, reduces the opening operation difficulty of the engine cover, and further improves the use experience of the vehicle.

[0092] The above is only a preferred embodiment of the present application, and the detailed configuration explanation, specific structure setting form example, or assembly connection mode expression is for the need of full disclosure, so that the present application can be better implemented by the person skilled in the art, and does not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An engine hood lock comprising a lock body and a lock catch (1); the lock body comprises a lock body support (2), a lock hook (5) and a zipper transmission mechanism (3) arranged on the lock body support (2), the lock hook (5) is rotatable on the lock body support (2), and a first elastic member is arranged between the lock hook (5) and the lock body support (2); the lock hook (5) is provided with a first clamping portion (51), a second clamping portion (52) and a lock opening (500), the lock catch (1) inserted into the lock opening (500) can drive the lock hook (5) to rotate in the locking direction and reach a locking position (800) for locking the lock catch (1) on the lock body support (2); the first elastic member can drive the lock hook (5) to rotate in the unlocking direction and sequentially reach a preliminary unlocking position (801) allowing the lock catch (1) to retreat to the outlet of the lock opening (500), and a complete unlocking position (802) allowing the lock catch (1) to move out of the lock opening (500); the zipper transmission mechanism (3) can be controlled to be clamped with the first clamping portion (51) to lock the lock hook (5) in the locking position (800), or to be clamped with the second clamping portion (52) to lock the lock hook (5) in the preliminary unlocking position (801).

2. The engine hood lock according to claim 1, wherein: a lock hook sheath (50) is sleeved on the lock hook (5), and the lock hook sheath (50) at least covers the part of the lock opening (500) in contact with the lock catch (1).

3. The engine hood lock according to claim 1, wherein: a first rotating shaft (61) and a second rotating shaft (62) are arranged in parallel on the lock body support (2), and the lock hook (5) is arranged on the first rotating shaft (61); the zipper transmission mechanism (3) comprises a lock hook clamp (4) arranged on the second rotating shaft (62), a second elastic member acting between the lock hook clamp (4) and the lock body support (2), and a pull wire (30) transmission connected to the lock hook clamp (4); the second elastic member is used to drive the lock hook clamp (4) to approach the lock hook (5) to maintain the locking state of the lock hook (5), and the pull wire (30) is used to pull the lock hook clamp (4) away from the lock hook (5) to release the locking of the lock hook (5).

4. The engine hood lock according to claim 3, wherein: the zipper transmission mechanism (3) further comprises a transmission frame (31) arranged on the second rotating shaft (62), and the pull wire (30) is connected to the transmission frame (31) to pull the transmission frame (31) to rotate; the transmission frame (31) is provided with a driving tab (311) inserted on the lock hook clamp (4) to drive the lock hook clamp (4) to rotate synchronously with the transmission frame (31). The second elastic member comprises a first rotary torsion spring (32) sleeved on the second rotating shaft (62), which elastically acts on the transmission frame (31) to drive the transmission frame (31) to rotate the locking hook (4) to the locking state.

5. The engine hood lock according to claim 4, wherein: The puller transmission mechanism (3) further comprises a reset plate (33) and a second rotary torsion spring (34) arranged on the first rotating shaft (61), the reset plate (33) is in transmission connection with the transmission frame (31); When the puller (30) drives the transmission frame (31) to rotate, the reset plate (33) can be driven to rotate synchronously and move away from the initial position; the second rotary torsion spring (34) acts between the lock body support (2) and the reset plate (33), and can drive the reset plate (33) to return to the initial position after the pulling force of the puller (30) is removed.

6. The engine hood lock according to claim 5, wherein: The transmission frame (31) is provided with a receiving plate (312) extending towards the first rotating shaft (61), and the reset plate (33) is provided with a reset tab (330) in abutting cooperation with the receiving plate (312); when the puller (30) drives the transmission frame (31) to rotate, the receiving plate (312) drives the reset tab (330) to realize the transmission between the reset plate (33) and the transmission frame (31).

7. The engine hood lock according to claim 3, wherein: The lock body support (2) comprises a front support (20) and a rear support (21), and the front support (20) and the rear support (21) are fixedly connected as a whole by the first rotating shaft (61) and the second rotating shaft (62).

8. The engine hood lock according to claim 3, wherein: The locking hook (5) is further provided with a limiting portion (53), when the locking hook (5) rotates to the fully unlocked position (802) in the unlocking direction, the limiting portion (53) abuts on the locking hook (4) to limit the continuous rotation of the locking hook (5).

9. The engine hood lock according to claim 8, wherein: The limiting portion (53), the first clamping portion (51) and the second clamping portion (52) are all arranged on an arc with the first rotating shaft (61) as the center.

10. The engine hood lock according to any one of claims 1 to 9, further comprising a lock position detection unit (7). The lock position detection unit (7) sends a first signal when the locking hook (5) locks the lock catch (1) on the lock body support (2), and sends a second signal when the locking hook (5) is in the preliminary unlocked position (801).

11. The engine hood lock according to claim 10, wherein: ​ The lock position detecting unit (7) comprises a sensor (70) and a trigger frame (71) arranged on the lock body support (2), and a third elastic member acting between the trigger frame (71) and the lock body support (2); The sensor (70) is fixed to the lock body support (2), and the trigger frame (71) can rotate between a first position and a second position; The trigger frame (71) is kept in the first position by the third elastic member and triggers the sensor (70) to send the first signal; The lock catch (1) inserted into the lock opening (500) and locked on the lock body support (2) can drive the trigger frame (71) to rotate to the second position and trigger the sensor (70) to send the second signal.

12. The engine hood lock according to claim 11, wherein: The trigger frame (71) is provided with a pressure receiving platform (710) and a pressure plate (711), when the lock catch (1) is inserted into the lock opening (500) and locked on the lock catch (1), the lock catch (1) pushes the pressure receiving platform (710) to drive the trigger frame (71) to rotate; the pressure plate (711) is used to trigger the sensor (70) to act.

13. The engine hood lock according to claim 12, wherein: The third elastic member comprises a tension spring (72) hung between the lock body support (2) and the trigger frame (71), and the trigger frame (71) is provided with a tension spring hook (712) for hanging the tension spring (72).

14. The engine hood lock according to claim 13, wherein: The third elastic member further comprises a third rotary torsion spring (73) sleeved on the rotating shaft of the trigger frame (71), and the two ends of the third rotary torsion spring (73) act on the lock body support (2) and the trigger frame (71) respectively.

15. A vehicle, wherein the vehicle is provided with the engine hood lock according to any one of claims 1 to 14.

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