Automobile hood lock
By introducing elastic components into the car hood lock, the problems of vibration and abnormal noise in the unlocked state are solved, and the effects of shock absorption, abnormal noise reduction and convenient opening are achieved.
Patent Information
- Application Number
- CN202421833322.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The lock of the existing car hood in an unlocked state will cause the hood to vibrate and cause abnormal noise, and may even damage the hood structure.
A car hood lock is designed, including a housing and a lock body. The lock body has a two-stage unlocking function and an elastic component is provided in the housing. When the elastic component is in the locked state or the first unlocked state, the elastic component tightens the hood upward to reduce vibration.
Through the tightening effect of the elastic component, the vibration of the hood in the unlocked state is reduced, and the risk of abnormal noise and damage is reduced. At the same time, the hood is conveniently opened in the second unlocked state, and cushioning is provided when closed, reducing impact sounds.
Smart Images
Figure CN222879473U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a vehicle lock, in particular to a car hood lock. Background Art
[0002] The front compartment of a car is generally used to place the engine, gearbox, coolant, battery, etc. on a fuel car, while it will form a storage space on a new energy car. However, no matter how it is set up, the front compartment needs to be shielded by the hood to form a protective effect. The hood needs to be locked with a hood lock to keep it in a stable state during the car's driving without shaking or other problems.
[0003] The current hood lock generally has two-stage unlocking, first unlocking by pulling the lever in the cockpit, and then manually unlocking the hood lock. This design can prevent the driver from misoperating during driving, causing the hood to be unlocked, and the hood is easily lifted by the wind during driving.
[0004] However, when the hood lock is in an unlocked state, although the hood will not be lifted by the wind, there will still be vibrations causing abnormal noises, and even damage to the hood structure. Therefore, it is necessary to optimize the hood lock to alleviate this problem. Utility Model Content
[0005] In view of the deficiencies in the prior art, the utility model aims to provide a car hood lock that can provide the effects of hood shock absorption and convenient opening.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a car hood lock, comprising a shell and a lock body installed in the shell, the lock body having two stages of unlocking, and forming a first unlocking state and a second unlocking state, and an elastic component is also arranged in the shell, which presses the hood upward at least when the hood is in a locked state or a first unlocking state.
[0007] As a further improvement of the present invention, the lock body includes a lock hook rotatably installed in the shell, a locking member for limiting the rotation of the lock hook, and a reset driving member for driving the locking member to reset. The locking member is rotatably installed in the shell, and the lock hook has at least a first mating surface and a second mating surface. The first mating surface and the second mating surface both cooperate with the locking member to form a locked state and a first unlocked state.
[0008] As a further improvement of the present utility model, a first protrusion is provided on one side of the locking member corresponding to the lock hook, and the first protrusion is used to cooperate with the first matching surface and the second matching surface to limit the rotation of the lock hook.
[0009] As a further improvement of the utility model, the reset drive member includes a torsion spring installed in the shell and a rotating member rotatably connected to the shell, a pawl is provided on one side of the rotating member corresponding to the locking member, and a second protrusion is provided at the position of the locking member corresponding to the pawl, the pawl is maintained in contact with the side of the second protrusion by the torsion spring, and maintains the tendency to drive the locking member to reset to lock the lock hook.
[0010] As a further improvement of the present invention, one side of the first protrusion is used to cooperate with the first mating surface and the second mating surface to abut, and the other side is used to cooperate with the lock hook to abut and drive the locking piece to rotate, so that the first mating surface or the second mating surface reaches the position of the first protrusion and cooperates with the first protrusion to form a lock.
[0011] As a further improvement of the utility model, the elastic component includes a guide rod and a push rod sleeved on the guide rod; the guide rod is also sleeved with a spring, and the push rod is also sleeved on the spring; one end of the spring corresponding to the push rod cooperates with the push rod to provide elastic force for the push rod to push upward to tighten the hood.
[0012] As a further improvement of the utility model, a rubber sheet is provided at the end of the push rod for abutting against the hood.
[0013] As a further improvement of the present invention, sliders are provided on both sides of the push rod, and sliding grooves are provided at positions of the shell corresponding to the sliders. The sliders slide up and down in the sliding grooves and restrict the push rod from escaping from the shell.
[0014] As a further improvement of the present invention, one of the slide grooves is a hollow structure, and limiting protrusions are provided on both sides of the slider corresponding to the slide groove, and there is a gap between the limiting protrusion and the top rod, so that the thickness part of the shell is located in the gap to guide the sliding direction of the slider.
[0015] As a further improvement of the present invention, the width of the upper position of the hollow structure's slide groove is smaller than that of the lower position, and the two positions are transitioned by a slope, and the width of the lower position of the slide groove is at least sufficient for the limiting protrusions on both sides of the slider to pass through.
[0016] As a further improvement of the present utility model, the shell includes a first shell and a second shell, two slide grooves are respectively located on the first shell and the second shell, and the first shell and the second shell are assembled by buckles or bolts.
[0017] As a further improvement of the utility model, an assembly groove for installing the guide rod is provided on the first shell, and the groove wall below is used to support the guide rod, a notch is provided at the bottom of the guide rod, and an abutment is provided at a position corresponding to the notch on the second shell, the abutment is located in the notch of the guide rod and cooperates with the assembly groove to support the guide rod.
[0018] As a further improvement of the present invention, the second shell is made of metal, and a slide groove with a hollow structure is located on the second shell. The hollow structure is formed into a hollow structure and an abutment member by punching and bending the position.
[0019] As a further improvement of the present invention, the outlet of the second shell corresponding to the extension of the push rod is bent to form a guide member for guiding the extension of the push rod, and the guide member cooperates with the outlet of the assembly groove of the first shell to stabilize the extension of the push rod.
[0020] The beneficial effect of the utility model is that the elastic component is used to tighten the hood, so that the hood can have an elastic tightening effect when it is in the first unlocked state, which can reduce vibration and play a buffering role. On the one hand, it can reduce abnormal noise, and on the other hand, it can avoid damage to the hood connection caused by vibration. In addition, the elastic component can also pop up the hood when the hood is in the second unlocked state, making it more convenient for the user to open the hood. At the same time, it can also provide a buffer when the user closes the hood, reducing the impact when the hood is turned down and locked, and can also reduce the impact sound. At the same time, it can also provide a tightening elastic force when the hood is in the locked state, so that the hood can have a more stable tightening effect even in the locked state, reducing the gap in the assembly process that causes the hood to make abnormal noise when the car is driving. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;
[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model;
[0023] Figure 3 It is a schematic diagram of the guide rod and the top rod structure of the utility model;
[0024] Figure 4 It is a schematic diagram of the second shell structure of the utility model.
[0025] Figure numbers: 1. Shell; 11. First shell; 111. Assembly groove; 12. Second shell; 121. Abutment member; 122. Guide member; 13. Slide groove; 3. Elastic component; 31. Guide rod; 311. Notch; 32. Push rod; 321. Slider; 34. Rubber sheet; 35. Limiting protrusion; 4. Lock body; 41. Lock hook; 411. First mating surface; 412. Second mating surface; 42. Locking member; 421. First protrusion; 422. Second protrusion; 43. Reset drive member; 431. Rotating member; 432. Ratchet. DETAILED DESCRIPTION
[0026] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.
[0027] Reference Figure 1-4 As shown,
[0028] A car hood lock comprises a shell 1 and a lock body 4 installed in the shell 1. The lock body 4 has two stages of unlocking, and forms a first unlocking state and a second unlocking state. An elastic component 3 is also arranged in the shell 1. The elastic component 3 presses the hood upward at least when the hood is in the locked state or the first unlocking state.
[0029] The existing lock body 4 can provide two-stage unlocking, and through the two-stage unlocking, the hood is in a first unlocking state and a second unlocking state. In the first unlocking state, there will be a certain gap between the hood and the cabin. At this time, vibration and abnormal noise are likely to occur during the driving of the car. The present solution uses the elastic component 3 to tighten the hood, which can make the hood have an elastic tightening effect when it is in the first unlocking state, which can reduce vibration and play a buffering role. On the one hand, it can reduce abnormal noise, and on the other hand, it can avoid vibration causing damage to the hood connection. In addition, the elastic component 3 can also pop up the hood when the hood is in the second unlocking state, making it easier for users to open the hood. At the same time, it can also provide a buffer when the user closes the hood, reducing the impact when the hood is turned down and locked, and also reducing the impact sound. At the same time, it can also provide a tightening elastic force when the hood is in a locked state, so that the hood can have a more stable tightening effect even in a locked state, reducing the gaps in the assembly process that cause abnormal noises when the car is driving.
[0030] The lock body 4 includes a lock hook 41 rotatably installed in the shell 1, a locking member 42 for limiting the rotation of the lock hook 41, and a reset driving member 43 for driving the lock member 42 to reset. The lock member 42 is rotatably installed in the shell 1, and the lock hook 41 has at least a first mating surface 411 and a second mating surface 412. The first mating surface 411 and the second mating surface 412 both cooperate with the lock member 42 to form a locked state and a first unlocked state.
[0031] The lock hook 41 is used to cooperate with the lock rod on the hood for locking, and the lock member 42 is used to limit the rotation of the lock hook 41 to achieve the locking effect of the lock hook 41, wherein the reset drive member 43 is used to reset the lock member 42, and the lock member 42 is unlocked by pulling the pull rope, and the reset drive member 43 allows the lock member 42 to reset and lock the lock hook 41. It is convenient for the lock member 42 to form a match with the first matching surface 411 and the second matching surface 412. When the lock member 42 forms a match with the first matching surface 411, the lock hook 41 forms a completely locked state for the hood, and when the lock member 42 forms a match with the second matching surface 412, it is the first unlocked state.
[0032] A first protrusion 421 is provided on one side of the locking member 42 corresponding to the locking hook 41 . The first protrusion 421 is used to cooperate with the first matching surface 411 and the second matching surface 412 to limit the rotation of the locking hook 41 .
[0033] The first protrusion 421 can better cooperate with the first matching surface 411 and the second matching surface 412 through the side surface formed after the protrusion, thereby having abutment effect to limit the rotation of the lock hook 41.
[0034] Specifically, the reset drive member 43 includes a torsion spring installed in the shell 1, a rotating member 431 rotatably connected to the shell 1, a pawl 432 is provided on one side of the rotating member 431 corresponding to the locking member 42, and a second protrusion 422 is provided on the locking member 42 at a position corresponding to the pawl 432. The pawl 432 is maintained in contact with the side of the second protrusion 422 by the torsion spring, and maintains the tendency to drive the locking member 42 to reset to lock the lock hook 41.
[0035] The pawl 432 is mainly used to cooperate with the second protrusion 422 for driving. The torsion spring provides power for the rotating member 431 to rotate, and the pawl 432 is used to abut the second protrusion 422 to drive the locking member 42 to rotate, so that it maintains a movement trend of returning to the original position, thereby facilitating rapid locking of the lock hook 41.
[0036] One side of the first protrusion 421 is used to cooperate with the first mating surface 411 and the second mating surface 412 to abut, and the other side is used to cooperate with the lock hook 41 to abut and drive the locking member 42 to rotate, so that the first mating surface 411 or the second mating surface 412 reaches the position of the first protrusion 421 and cooperates with the first protrusion 421 to form a lock. In the process of locking, the lock hook 41 will abut the locking member 42 to squeeze the locking member 42 away, forcing the locking member 42 to rotate and allowing the lock hook 41 to enter. After the lock hook 41 enters, the lock member 42 will lock the lock hook 41 under the reset action.
[0037] In this solution, the elastic component 3 includes a guide rod 31 and a push rod 32 sleeved on the guide rod 31; a spring is also sleeved on the guide rod 31, and the push rod 32 is also sleeved on the spring; one end of the spring corresponding to the push rod 32 cooperates with the push rod 32 to provide elastic force for the push rod 32 to push upward to tighten the hood.
[0038] The guide rod 31 can keep the top rod 32 in a more stable telescopic state, and at the same time facilitates the installation of the spring, and also has a guiding effect on the spring to avoid bending during the working process of the spring. The overall structure is more stable.
[0039] In a further configuration, in order to increase the service life on the one hand and reduce the noise on the other hand, a rubber sheet 34 is provided at the end of the top rod 32 for abutting against the hood.
[0040] The rubber sheet 34 has a certain deformation capacity, is also more wear-resistant, and has a longer service life. At the same time, when the hood is lowered, the sound of impact can also be reduced.
[0041] In order to make the push rod 32 slide more stably, sliders 321 are provided on both sides of the push rod 32, and a slide groove 13 is provided at the position of the housing 1 corresponding to the slider 321, and the slider 321 slides up and down in the slide groove 13, and restricts the push rod 32 from escaping from the housing 1. The slide groove 13 can be used to stabilize the up and down sliding of the push rod 32, and there will be no problem of circumferential rotation, which can reduce the circumferential force of the spring and extend the service life of the spring.
[0042] One of the slide grooves 13 is a hollow structure, and limiting protrusions 35 are set on both sides of the slider 321 corresponding to the slide groove 13. There is a gap between the limiting protrusion 35 and the push rod 32, so that the thickness part of the shell 1 is located in the gap to guide the sliding direction of the slider 321.
[0043] The gap between the limiting protrusion 35 and the push rod 32 can be used to further guide the push rod 32. The existence of the gap is equivalent to using the thickness of the shell 1 as a slide rail to slide up and down. Based on this design, the push rod 32 can slide along the shell 1. As long as the shell 1 is not offset, the push rod 32 can be in a more stable sliding state.
[0044] In order to facilitate the cooperation between the limiting protrusion 35 and the shell 1, the width of the upper position of the hollow structure slide groove 13 is smaller than the corresponding position below it, and the two positions are transitioned by a slope. The width of the lower position of the slide groove 13 is at least enough for the limiting protrusions 35 on both sides of the slider 321 to pass through.
[0045] The limiting protrusion 35 can pass through the bottom part of the hollow part, and then slide upward to form a match with the shell. The slope can play a guiding role, making it easier for the top rod 32 to form a match with the hollow structure without getting stuck.
[0046] Preferably, the housing 1 includes a first housing 11 and a second housing 12 , the two slide grooves 13 are respectively located on the first housing 11 and the second housing 12 , and the first housing 11 and the second housing 12 are assembled by buckles or bolts.
[0047] The first shell 11 and the second shell 12 are installed in coordination with each other, and can cooperate with the hollow structure. First, the top rod 32 is pressed down, and then the first shell 11 and the second shell 12 are installed. At this time, the limiting protrusion 35 can pass through the hollow structure, and then the top rod 32 is bounced up, so that the limiting protrusion 35 can cooperate with the hollow structure.
[0048] In order to make the assembly between the first shell 11 and the second shell 12 more stable, an assembly groove 111 for installing the guide rod 31 is provided on the first shell 11, and the groove wall below is used to support the guide rod 31. A notch 311 is provided at the bottom of the guide rod 31, and abutment 121 is provided at a position corresponding to the notch 311 on the second shell 12. The abutment 121 is located in the notch 311 of the guide rod 31 and cooperates with the assembly groove 111 to support the guide rod 31.
[0049] The abutment 121 on the second shell 12 is squeezed through the notch 311 at the bottom of the guide rod 31, which can provide a certain positioning effect. The abutment 121 is pressed by the reaction force provided by the push rod 32 when the hood is pressed, thereby stabilizing the second shell 12, and allowing the first shell 11 and the second shell 12 to be in a more stable matching state. At the same time, the bottom notch 311 of the guide rod 31 cooperates with the abutment 121, which can limit the circumferential rotation of the guide rod 31 and also has better stability, so that the spring can be in a more stable working state.
[0050] Preferably, the second shell 12 is made of metal, and the slide groove 13 with a hollow structure is located on the second shell 12 . The hollow structure and the abutment member 121 are formed by punching and bending the position.
[0051] The second housing 12 supported by metal material can be made of plastic to cooperate with the first housing 11, which can reduce weight and cost while maintaining sufficient strength. Moreover, the hollowed-out part can also be processed by punching, and the part left after punching can be bent to form a hollow, and the bent part can be directly used as the abutment 121. This method of cooperation can make processing more convenient, and two structures can be formed in one processing.
[0052] Since the second housing 12 is made of metal, and the bending described above shows that the metal material is bendable, with this feature, the second housing 12 is bent at the outlet corresponding to the extension of the ejector rod 32 to form a guide 122 for guiding the extension of the ejector rod 32, and the guide 122 cooperates with the outlet of the assembly groove 111 of the first housing 11 to stabilize the extension of the ejector rod 32. Based on this bending feature, the guide 122 can be formed directly on the second housing 12 by bending (punching is required first, and punching can be performed together with the punching process of the hollow structure), and the processing method is simple and the processing efficiency is also high.
[0053] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.
Claims
1. A car hood lock, comprising a housing and a lock body installed in the housing, wherein the lock body has two stages of unlocking, and forms a first unlocking state and a second unlocking state, characterized in that: The shell is also provided with an elastic component, which presses the hood upwards at least when the hood is in a locked state or a first unlocked state; The lock body comprises a lock hook rotatably mounted in the housing, a locking member for limiting the rotation of the lock hook, and a reset driving member for driving the lock member to reset, the lock member is rotatably mounted in the housing, the lock hook has at least a first mating surface and a second mating surface, the first mating surface and the second mating surface both cooperate with the lock member to form a locked state and a first unlocked state; The elastic component includes a guide rod and a push rod sleeved on the guide rod; a spring is also sleeved on the guide rod, and the push rod is sleeved on the spring at the same time; one end of the spring corresponding to the push rod cooperates with the push rod to provide elastic force for the push rod to push upward to tighten the hood.
2. The automobile hood lock according to claim 1, characterized in that: A first protrusion is provided on one side of the locking member corresponding to the lock hook, and the first protrusion is used to cooperate with the first matching surface and the second matching surface to limit the rotation of the lock hook.
3. The automobile hood lock according to claim 2, characterized in that: The reset drive member includes a torsion spring installed in the shell and a rotating member rotatably connected to the shell. A pawl is provided on one side of the rotating member corresponding to the locking member. A second protrusion is provided at the position of the locking member corresponding to the pawl. The pawl is kept in contact with the side of the second protrusion by the torsion spring and maintains the tendency of driving the locking member to reset to lock the lock hook.
4. The automobile hood lock according to claim 3, characterized in that: One side of the first protrusion is used to cooperate with the first mating surface and the second mating surface to abut, and the other side is used to cooperate with the lock hook to abut and drive the locking member to rotate, so that the first mating surface or the second mating surface reaches the position of the first protrusion and cooperates with the first protrusion to form a lock.
5. The automobile hood lock according to claim 1, characterized in that: The end of the push rod is provided with a rubber sheet for abutting against the hood.
6. The automobile hood lock according to claim 1, characterized in that: Slide blocks are arranged on both sides of the push rod, and slide grooves are arranged at positions of the shell corresponding to the slide blocks. The slide blocks slide up and down in the slide grooves and restrict the push rod from coming out of the shell.
7. The automobile hood lock according to claim 6, characterized in that: One of the slide grooves is a hollow structure, and limiting protrusions are provided on both sides of the slider corresponding to the slide groove. There is a gap between the limiting protrusion and the push rod, so that the thickness part of the shell is located in the gap to guide the sliding direction of the slider.
8. The automobile hood lock according to claim 7, characterized in that: The width of the upper position of the hollow structure slide groove is smaller than that of the lower position, and the two positions are transitioned by a slope. The width of the lower position of the slide groove is at least sufficient for the limiting protrusions on both sides of the slider to pass through.
9. The automobile hood lock according to claim 6, 7 or 8, characterized in that: The housing comprises a first housing and a second housing, two slide grooves are respectively located on the first housing and the second housing, and the first housing and the second housing are assembled by buckles or bolts.
10. The automobile hood lock according to claim 9, characterized in that: The first shell is provided with an assembly groove for installing the guide rod, and the groove wall below is used to support the guide rod. The bottom of the guide rod is provided with a notch, and abutment is provided at a position corresponding to the notch on the second shell. The abutment is located in the notch of the guide rod and cooperates with the assembly groove to support the guide rod.
11. The automobile hood lock according to claim 10, characterized in that: The second shell is made of metal material, and a slide groove with a hollow structure is located on the second shell. The hollow structure and the abutment member are formed by punching and bending the position.
12. The automobile hood lock according to claim 11, characterized in that: The outlet of the second shell corresponding to the extension of the push rod is bent to form a guide member for guiding the extension of the push rod, and the guide member cooperates with the outlet of the assembly groove of the first shell to stabilize the extension of the push rod.