CN222501363U - A double-pull front cover lock for automobile - Google Patents

Abstract

The utility model discloses an automobile double-pull front cover lock which comprises a ratchet wheel and a pawl capable of being meshed with the ratchet wheel, wherein the ratchet wheel and the pawl can be driven by external force respectively and rotate around a ratchet wheel shaft and a pawl shaft, a first torsion spring is sleeved on the ratchet wheel shaft, a second torsion spring is sleeved on the pawl shaft, a first meshing part and a second meshing part which are adjacent to each other are arranged on the ratchet wheel, a third meshing part which can be meshed with the first meshing part or the second meshing part is arranged on the pawl, a first stop part is further arranged on the ratchet wheel, a second stop part is further arranged on the pawl, and when the pawl rotates and drives the third meshing part to be disconnected with the first meshing part, the second stop part can be contacted with the first stop part to prevent the ratchet wheel from rotating towards a unlocking position.

Description

Double-pull front cover lock of automobile

Technical Field

The utility model relates to the field of automobiles, in particular to an automobile double-pull front cover lock.

Background

In conventional automotive designs, the front cover is often referred to as a cover portion of the engine compartment, the primary function of which is to protect the engine and its associated components from the ingress of dust, moisture and other external elements. Meanwhile, the front cover also plays a role in attractive appearance and aerodynamics, and is beneficial to improving the overall appearance and performance of the vehicle. Structurally, the front cover is connected to the vehicle body by a hinge and is equipped with a latch system to keep it stably closed during travel.

Conventional front cover locks typically include an unlocking handle located in a cab, a main lock body, and a latch, wherein the unlocking handle in the cab is used to unlock the front cover from the inside, the main lock body is typically mounted to a vehicle body, and the latch is typically mounted to an inner surface of the front cover corresponding to the main lock body, and the front cover can be securely locked in a closed position by a mating locking action of the main lock body and the latch.

In addition, in the conventional design of the front cover lock of the automobile, a multi-stage locking mechanism is generally adopted to ensure that the front cover cannot be accidentally opened due to vibration or other external force when the front cover runs at a high speed, and a main lock and at least one safety lock are generally included to provide additional safety guarantee, for example, an additionally arranged safety hook is used, when a user pulls an unlocking handle in a cab, the user walks to the front head to manually pull the two safety hooks, and finally lifts the front cover. In conventional fuel vehicles, this design is adequate for daily use due to the relatively low frequency of opening of the front cover.

However, with the popularization of new energy automobiles, the design and use of automobile front covers have changed significantly. The new energy automobile often designs the space under the front cover as a storage space to adapt to the layout without the traditional engine, thereby providing additional storage convenience for users. During use, the user needs to access this storage space more frequently. The opening frequency of the front cover is greatly increased.

In this new context of use, the drawbacks of the conventional vehicle front cover locks begin to manifest. Firstly, the operation of a conventional vehicle front cover lock is relatively cumbersome, requiring the user to pull the unlocking handle in the cab, then walk to the head to manually pull the two safety hooks apart, and finally lift the front cover, which is time consuming and may be laborious in some situations, especially for users with less strength or in emergency situations where the front cover needs to be opened quickly.

In addition, the complexity of conventional automotive front cover locks, in the face of frequent opening and closing actions, may lead to increased wear of the mechanical parts of the conventional automotive front cover locks, thereby increasing maintenance costs and potential failure risks, while also increasing assembly time and total part costs.

Therefore, the structure of the traditional automobile front cover lock needs to be improved, so that the traditional automobile front cover lock is better suitable for being used as a new energy automobile head storage space cover lock structure.

Disclosure of utility model

The utility model aims to provide a double-pull front cover lock for an automobile, which aims to solve the technical problems that the structure and the operation process of the traditional front cover lock for the automobile are relatively complicated and are not suitable for being used as a storage space cover lock for a head of a new energy automobile.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the automobile double-pull front cover lock comprises a ratchet wheel and a pawl which can be meshed with the ratchet wheel, wherein the ratchet wheel and the pawl can be driven by external force respectively and rotate around a ratchet wheel shaft and a pawl shaft, a first torsion spring is sleeved on the ratchet wheel shaft, and a second torsion spring is sleeved on the pawl shaft;

The ratchet wheel is provided with a first meshing part and a second meshing part which are adjacent to each other, and correspondingly, the pawl is provided with a third meshing part which can be meshed with the first meshing part or the second meshing part;

When the pawl rotates and drives the third meshing part to be disconnected with the first meshing part, the second stopping part can be contacted with the first stopping part to prevent the ratchet wheel from rotating towards the unlocking position.

The automobile double-pull front cover lock is provided with primary locking and secondary unlocking functions, and the ratchet wheel and the pawl can be respectively located in an upper locking position, a first unlocking position and a second unlocking position. The novel storage space cover lock is simple in structure, easy to operate, suitable for being used as a storage space cover lock of a new energy automobile, and capable of being suitable for frequent opening and closing of the storage space cover of the automobile.

As one implementation mode of external force driving pawl rotation, a driving end is arranged on the pawl, and the driving end can be pulled or pushed by external force to enable the pawl to rotate towards an unlocking position.

Preferably, the driving end is provided with a pull wire, the pull wire can be pulled by external force to perform linear motion, and when the pull wire is pulled, the pawl can rotate towards the unlocking position.

Preferably, a perforation is formed in the driving end, a pull wire penetrates through the perforation, specifically, one end of the pull wire penetrating through the perforation is provided with a stop ball, the other end of the pull wire is used for being connected with an unlocking key of a central control room in an automobile cab, when the automobile cab is unlocked, the primary front cover lock unlocking key is operated to pull the pull wire once, the driving end can be driven to move and drive the pawl to rotate towards the primary unlocking position under the action of the stop ball, the primary front cover lock unlocking key is operated again to pull the pull wire once again, and the driving end can be driven to move and drive the pawl to rotate towards the secondary unlocking position.

When the ratchet wheel and the pawl are in the secondary unlocking position, the automobile front cover is put down, the lock catch stretches into the ratchet wheel groove, the lock catch can drive the ratchet wheel to rotate towards the upper locking position, the ratchet wheel groove is further closed by the lock body, and the lock catch is locked in the ratchet wheel groove, so that the automobile front cover is locked.

Preferably, the ratchet groove is provided with the first plastic coating, so that noise caused by collision between the ratchet groove and the lock catch can be effectively reduced.

Preferably, the first plastic wrap is provided with a first extension part sleeved on the ratchet shaft, the outer surface of the pawl is coated with a second plastic wrap, and the second plastic wrap is provided with a second extension part sleeved on the pawl shaft, so that noise generated by the first torsion spring and the second torsion spring during rotation can be effectively reduced.

Preferably, the automobile double-pull front cover lock further comprises an upper cover and a lower cover, the upper cover and the lower cover are detachably connected, the ratchet shaft and the pawl shaft are respectively connected between the upper cover and the lower cover in a rotating mode, the ratchet shaft and the pawl shaft are respectively sleeved with the ratchet shaft and the pawl, and the ratchet and the pawl can respectively rotate around the ratchet shaft and the pawl shaft.

Preferably, the inner side of the lower cover is detachably provided with a plastic base, the plastic base is provided with through holes corresponding to the pawl shaft and the ratchet shaft respectively, the pawl shaft and the ratchet shaft respectively penetrate out of the corresponding through holes, and the ratchet and the pawl are arranged between the plastic base and the upper cover. The plastic base can effectively reduce noise generated by the first torsion spring and the second torsion spring in the moving process.

The technical scheme of the utility model has the advantages that for a new energy automobile with a storage space on the head, the double-pull front cover lock of the automobile disclosed by the utility model can realize that a user can complete unlocking of the front cover only by driving the pawl to rotate twice by external force, the structure simplifies the number of parts, saves the assembly time, reduces the cost of the total parts, lightens the weight, ensures that the front cover is opened more time-saving and labor-saving, and greatly improves the convenience and efficiency of operation on the premise of not sacrificing the safety.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings, in which:

Fig. 1 is a schematic diagram of the overall structure of the double-pull front cover lock of the automobile.

Fig. 2 is a schematic diagram of the internal structure of the double-pull front cover lock of the automobile.

Fig. 3 is a schematic diagram of the matching structure of the ratchet and the pawl of the double-pull front cover lock of the automobile.

Fig. 4 is a schematic diagram of an assembly structure of a plastic base and a lower cover of a dual-pull front cover lock of an automobile according to the present utility model.

Fig. 5 is a schematic diagram of a first unlocking process of the double-pull front cover lock of the automobile.

Fig. 6 is a schematic diagram of a second unlocking process of the double-pull front cover lock of the automobile.

Fig. 7 is a schematic diagram of a third unlocking process of the double-pull front cover lock of the automobile.

The reference numerals comprise 100, a ratchet, 101, a first meshing part, 102, a second meshing part, 103, a first stopping part, 104, a ratchet shaft, 105, a first torsion spring, 106, a first plastic coating, 107, a ratchet groove, 200, a pawl, 201, a third meshing part, 202, a second stopping part, 203, a pawl shaft, 204, a second torsion spring, 205, a second plastic coating, 206, a driving end, 207, a stopping ball, 300, a pull wire, 401, an upper cover, 402, a lower cover, 403 and a plastic base.

Detailed Description

In order to better understand the purpose, structure and function of the present utility model, the following describes a double-pull front cover lock for an automobile in detail with reference to the accompanying drawings.

The utility model can be applied to the storage space cover body of the new energy automobile head, and solves the technical problems that the structure and the operation process of the traditional automobile front cover lock are relatively complicated, and the traditional automobile front cover lock is not suitable for being used as the storage space cover body lock of the new energy automobile head.

In particular, the vehicles described in the present document can be used to refer to all types of vehicles, such as fuel-powered vehicles, electric vehicles (including electric-only vehicles, plug-in hybrid vehicles, and range-enhancing electric vehicles), and other new energy types of vehicles, such as hydrogen-powered fuel cell vehicles, and the like.

Referring to fig. 1 to 3, based on the above-mentioned technical problems, the present embodiment discloses a dual-pull front cover lock for an automobile, which includes a ratchet 100 and a pawl 200 capable of being meshed with the ratchet 100, wherein the ratchet 100 and the pawl 200 can be driven by external force respectively and rotate around a ratchet shaft 104 and a pawl shaft 203, a first torsion spring 105 is sleeved on the ratchet shaft 104, and a second torsion spring 204 is sleeved on the pawl shaft 203;

The ratchet 100 is provided with a first meshing part 101 and a second meshing part 102 which are adjacent to each other, correspondingly, the pawl 200 is provided with a third meshing part 201, and the third meshing part 201 can be meshed with the first meshing part 101 or the second meshing part 102;

When the pawl 200 rotates and drives the third engaging portion 201 to disengage from the first engaging portion 101, the second stopping portion 202 can contact with the first stopping portion 103, so as to prevent the ratchet 100 from rotating towards the unlocking position.

In the scheme, the automobile double-pull front cover lock is provided with primary locking and secondary unlocking functions, and correspondingly, the ratchet wheel 100 and the pawl 200 can be respectively positioned in an upper locking position, a first unlocking position and a second unlocking position;

The locking process of this embodiment is:

When the ratchet 100 is locked, the ratchet 100 rotates towards the upper locking position, at this time, the first meshing part 101 of the ratchet 100 is abutted against the third meshing part 201 and drives the pawl 200 to rotate towards the upper locking position until the first meshing part 101 is meshed with the third meshing part 201, the ratchet 100 and the pawl 200 reach the upper locking position, and meanwhile, the first torsion spring 105 is contracted and can store elastic potential energy;

The unlocking process of this embodiment is:

when the first-stage unlocking is performed, the pawl 200 is driven by external force to rotate forward and rotate towards the first-stage unlocking position, so that the third meshing part 201 drives the ratchet 100 to rotate through the first meshing part 101 until the second stopping part 202 contacts with the first stopping part 103, at the moment, the third meshing part 201 is disengaged from the first meshing part 101, and meanwhile, the second torsion spring 204 is contracted to store elastic potential energy;

Then, the external force is removed, the pawl 200 drives the pawl 200 to rotate in the opposite direction under the action of the elastic restoring force of the second torsion spring 204, the ratchet 100 is released, the ratchet 100 continues to rotate under the action of the elastic restoring force released by the first torsion spring 105 until the third meshing part 201 is meshed with the second meshing part 102, and at the moment, both the ratchet 100 and the pawl 200 are in the first unlocking position;

when the second stage is unlocked, the external force continues to drive the pawl 200 to rotate forward, the third meshing part 201 is disengaged from the second meshing part 102, the ratchet 100 is released, the external force is removed, the pawl 200 reversely rotates to the second stage unlocking position under the action of the elastic restoring force released by the second torsion spring 204, and the ratchet 100 continues to rotate to the second stage unlocking position under the action of the elastic restoring force released by the first torsion spring 105, so that the full unlocking of the double-pull front cover lock of the automobile is realized.

For the new energy automobile with the front storage space, the front cover is opened and closed frequently, the structure is simple, the operation is simple, the front cover can be unlocked completely by driving the pawl to rotate twice by external force, the novel energy automobile is suitable for being used as a lock for the front storage space cover of the new energy automobile, the novel energy automobile can adapt to the frequent opening and closing of the front storage space cover, the number of parts is simplified, the assembly time is saved, the cost of the total parts is reduced, the weight is reduced, the front cover of the automobile is opened more time-saving and labor-saving, and the convenience and the efficiency of the operation are greatly improved on the premise of not sacrificing the safety.

In embodiment 2, referring to fig. 2 and 3, as one implementation manner of driving the pawl 200 to rotate by external force, the pawl 200 is provided with a driving end 206, and the driving end 206 can be pulled or pushed by external force to rotate the pawl 200 toward the unlocking position based on the structure of the dual pull front cover lock of the automobile in embodiment 1.

In embodiment 3, as a preferred solution of embodiment 2, referring to fig. 2 and 3, the driving end 206 is provided with a pull wire 300, the pull wire 300 can be pulled by an external force to perform a linear motion, and when the pull wire 300 is pulled, the pawl 200 can be rotated toward the unlocking position.

In embodiment 4, as one implementation manner of embodiment 3, referring to fig. 2 and 3, a perforation is formed on the driving end 206, a pull wire 300 is penetrated through the perforation, specifically, one end of the pull wire 300 penetrating through the perforation is provided with a stop ball 207, the other end of the pull wire 300 is used for being connected with an unlocking key of a central control room in a cockpit of an automobile, when the automobile is unlocked, the primary front cover lock unlocking key is operated to pull the primary pull wire 300, under the action of the stop ball 207, the driving end 206 can be driven to move and drive the pawl 200 to rotate towards the primary unlocking position, and the primary front cover lock unlocking key is operated again to pull the primary pull wire 300 again, so that the driving end 206 can be driven to move and drive the pawl 200 to rotate towards the secondary unlocking position.

The double-pull front cover lock in the embodiment has the following three working processes when being unlocked:

(1) Referring to fig. 5, for a first unlocking procedure, the pull wire 300 is pulled for the first time:

When the double-pull front cover lock is in the full-lock state, the ratchet 100 and the pawl 200 are both positioned in the upper locking position, the pull wire 300 is pulled in the direction shown in the figure, the pull wire 300 drives the pawl 200 to rotate in the direction shown in the figure, when the first meshing part 101 of the ratchet 100 is separated from the third meshing part 201 of the pawl 200, the ratchet 100 rotates in the direction shown in the figure due to the action of the elastic reset force of the first torsion spring 105, and the first stop part 103 of the ratchet 100 and the second stop part 202 of the pawl 200 are contacted to prevent the ratchet 100 from completely turning to the unlocking position;

(2) Referring to fig. 6, for a second unlocking process, the pull wire 300 is released:

When the pull wire 300 is released, the pawl 200 starts to rotate and reset in the opposite direction under the action of the elastic reset force of the second torsion spring 204, at this time, the first stop part 103 of the ratchet 100 and the second stop part 202 of the pawl 200 are separated, the third meshing part 201 of the pawl 200 is meshed with the second meshing part 102 of the ratchet 100, at this time, the ratchet 100 is in the primary unlocking position, and the ratchet 100 stops rotating towards the secondary unlocking position;

(3) Referring to fig. 7, for a third unlocking process, the pull wire 300 is pulled for the second time:

The second pulling of the pull wire 300 causes the third engagement portion 201 of the pawl 200 to disengage from the second engagement portion 102 of the ratchet 100, the ratchet 100 rotates to the second unlocking position under the elastic restoring force of the first torsion spring 105, and the lock body is completely unlocked.

In embodiment 5, referring to fig. 3, preferably, the ratchet 100 includes a ratchet groove 107 for extending a latch installed inside the front cover of the automobile, and when the ratchet 100 and the pawl 200 are in the second unlocking position, the front cover of the automobile is put down, the latch extends into the ratchet groove 107, the latch can drive the ratchet 100 to rotate towards the upper locking position, and the ratchet groove 107 is closed by the lock body, so that the latch is locked in the ratchet groove 107, thereby realizing the locking of the front cover of the automobile.

In embodiment 6, as a preferred embodiment of embodiment 5, referring to fig. 2 and 3, the ratchet groove 107 has the first molding 106, so that noise of the impact between the ratchet groove 107 and the lock catch can be effectively reduced.

Specifically, the first molding 106 is made of a soft rubber material.

In embodiment 7, as a preferred solution of embodiment 6, referring to fig. 2 and 3, the first molding 106 has a first extension portion sleeved on the ratchet shaft 104, the outer surface of the pawl 200 is coated with a second molding 205, and the second molding 205 has a second extension portion sleeved on the pawl shaft 203, so that noise generated by the first torsion spring 105 and the second torsion spring 204 during rotation can be effectively reduced.

Specifically, the second molding 205 is made of a soft rubber material.

Embodiment 8, referring to fig. 1 and 2, on the basis of any one of the above embodiments, the dual-pull front cover lock for an automobile further includes an upper cover 401 and a lower cover 402, the upper cover 401 and the lower cover 402 are detachably connected, the ratchet shaft 104 and the pawl shaft 203 are respectively rotatably connected between the upper cover 401 and the lower cover 402, the ratchet shaft 104 and the pawl 200 are respectively sleeved on the ratchet shaft 104 and the pawl shaft 203, and the ratchet 100 and the pawl 200 can respectively rotate around the ratchet shaft 104 and the pawl shaft 203.

In embodiment 9, as a preferred solution of embodiment 8, referring to fig. 2 and 4, a plastic base 403 is detachably mounted on the inner side of the lower cover 402, holes are formed on the plastic base 403 corresponding to the pawl shaft 203 and the ratchet shaft 104, the pawl shaft 203 and the ratchet shaft 104 respectively pass through the corresponding holes, and the ratchet 100 and the pawl 200 are mounted between the plastic base 403 and the upper cover 401. The plastic base 403 can effectively reduce noise generated by the first torsion spring 105 and the second torsion spring 204 during the movement process.

The double-pull front cover lock for the automobile has the following technical effects:

1. For a new energy automobile with a storage space on the front cover, the front cover is opened and closed frequently, and the novel energy automobile with the storage space on the front cover adopts a brand new structure, so that a user can unlock the front cover only by operating an unlocking key or a button twice in a cab, the structure simplifies the number of parts, saves the assembly time, reduces the total part cost, lightens the weight, ensures that the front cover is opened more time-saving and labor-saving, and greatly improves the convenience and the efficiency of operation on the premise of not sacrificing the safety.

2. In addition, in the automobile design, the safety is always one of the primary factors, the design of the front cover lock is convenient for a user to operate, the safety under various conditions is ensured, the automobile double-pull front cover lock is provided with two-stage unlocking, the aim of providing double guarantees is achieved, even if the primary unlocking fails, the secondary unlocking can still keep the locking state of the front cover, so that the risk of accidental opening is reduced, and in addition, the possibility of accidental unlocking of the front cover caused by misoperation can be reduced by the two-stage unlocking.

3. The automobile double-pull front cover lock also comprises the plastic coating characteristics of the plastic base and the ratchet wheel and pawl, so that noise generated in the spring movement and lock catch impact process is effectively reduced, and the user experience is further improved.

4. In summary, the automobile double-pull front cover lock not only responds to the new demand of the new energy automobile on the front cover lock, but also improves the use convenience and the overall performance of the automobile through technical innovation, and meets the pursuit of the modern automobile industry on high efficiency, safety and environmental protection.

It will be understood that the utility model has been described in terms of specific embodiments/examples, and that various changes in and equivalents to these features and embodiments/examples may be made by those skilled in the art without departing from the spirit and scope of the utility model. Modifications to these features and embodiments/examples may be made within the teachings of the present utility model to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. The embodiments/examples described herein are some, but not all embodiments/examples of the utility model. The components of the embodiments/embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of specific embodiments/examples of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected specific embodiments/examples of the utility model. Therefore, it is intended that the utility model not be limited to the particular embodiments/examples disclosed herein, but that the particular embodiments/examples disclosed herein will include all other embodiments/examples disclosed herein as would be apparent to one skilled in the art without the benefit of this disclosure.

Claims (9)

1. The automobile double-pull front cover lock is characterized by comprising a ratchet wheel and a pawl which can be meshed with the ratchet wheel, wherein the ratchet wheel and the pawl can be driven by external force respectively and rotate around a ratchet wheel shaft and a pawl shaft, a first torsion spring is sleeved on the ratchet wheel shaft, and a second torsion spring is sleeved on the pawl shaft;

The ratchet wheel is provided with a first meshing part and a second meshing part which are adjacent to each other, and correspondingly, the pawl is provided with a third meshing part which can be meshed with the first meshing part or the second meshing part;

When the pawl rotates and drives the third meshing part to be disconnected with the first meshing part, the second stopping part can be contacted with the first stopping part to prevent the ratchet wheel from rotating towards the unlocking position.

2. The vehicle double-pull front cover lock of claim 1, wherein the pawl is provided with a drive end which can be pulled or pushed by an external force to rotate the pawl toward the unlocking position.

3. The automobile double-pull front cover lock according to claim 2, wherein the driving end is provided with a pull wire, the pull wire can be pulled by an external force to perform linear motion, and when the pull wire is pulled, the pawl can be rotated towards the unlocking position.

4. The automobile double-pull front cover lock according to claim 3, wherein a through hole is formed in the driving end, a pull wire penetrates through the through hole, a stop ball is arranged at one end of the pull wire penetrating through the through hole, and the other end of the pull wire is used for being connected with an unlocking key of a central control room in an automobile cockpit.

5. The vehicle double-pull front cover lock of claim 4, wherein the ratchet includes a ratchet groove for inserting a shackle mounted on an inner side of the vehicle front cover.

6. The automotive dual pull front cover lock of claim 5, wherein the ratchet slot has a first overmold.

7. The automobile double-pull front cover lock of claim 6, wherein the first plastic wrap is provided with a first extension part sleeved on the ratchet shaft, the outer surface of the pawl is coated with a second plastic wrap, and the second plastic wrap is provided with a second extension part sleeved on the pawl shaft.

8. The vehicle double-pull front cover lock of any one of claims 1 to 7, further comprising an upper cover and a lower cover, the upper cover and the lower cover being detachably connected, the ratchet shaft and the pawl shaft being rotatably connected between the upper cover and the lower cover, respectively.

9. The automobile double-pull front cover lock according to claim 8, wherein a plastic base is detachably mounted on the inner side of the lower cover, through holes are formed in the plastic base corresponding to the pawl shaft and the pawl shaft respectively, the pawl shaft and the pawl shaft respectively penetrate through the corresponding through holes, and the ratchet and the pawl are mounted between the plastic base and the upper cover.