Vehicle head front cover lock opening tool

Abstract

The invention relates to a vehicle head front cover lock opening tool which comprises a handle, a traction rope, a cam, an ejector rod, a connecting rod and a shell, the handle is connected with the cam through the traction rope, the cam and the ejector rod are arranged in the shell, the connecting rod is rotationally connected with the shell, and the head end of the connecting rod serves as a rotating shaft. The traction rope pulls the cam to rotate in the shell to press the ejector rod, and the ejector rod pushes the connecting rod to upwarp to prize the lock head of the front cover lock; the connecting rod is provided with a rod protrusion, in the initial state, the rod protrusion makes contact with the shell, the rod protrusion is matched with the shell, the height of the rod protrusion is set, the stroke of the connecting rod is controlled, and therefore the stroke for pulling the pulling rope to conduct unlocking is controlled. Compared with the prior art, a person can open the engine hood by standing at the front end of a vehicle head, the tool applicability is high, and the unlocking stroke of the person can be controlled.

Description

Technical Field

[0001] This invention belongs to the field of vehicle hood lock technology and relates to a vehicle hood lock opening tool. Background Technology

[0002] During the assembly line loading process, the front hood of the vehicle is repeatedly opened when installing parts at the workstation. At a loading cycle of 60jph, with the hood closed, workers need to pull the hood open from the front of the vehicle to the driver's side, which is time-consuming and laborious. Workers need to stand at the front of the vehicle and use tools to open the hood lock.

[0003] Patent CN212507764U discloses a helicopter sliding door locking mechanism, including a handle assembly, an upper lock box assembly, and a lower lock box assembly disposed in the door body, and an upper lock seat assembly and a lower lock seat assembly disposed in the door frame. The upper lock box assembly is connected to the handle assembly via an upper steel wire rope assembly, and the lower lock box assembly is connected to the handle assembly via a lower steel wire rope assembly. However, this patent is only applicable to helicopter sliding doors and not to the front engine hood of a vehicle. Furthermore, the steel wire rope assembly causes the locking hook in the lock box assembly to disengage directly from the locking pin, opening the locking mechanism. The locking mechanism and the helicopter sliding door are an integrated design, making it unsuitable as a universal mechanism for different helicopter models, and it lacks a special design for the stroke of personnel pulling the steel wire rope assembly. Summary of the Invention

[0004] The purpose of this invention is to overcome at least one of the defects of the prior art and provide a tool for opening the front hood lock. This invention allows a person to open the hood while standing at the front of the vehicle. The tool is highly applicable and the unlocking stroke can be controlled.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] One of the technical solutions of the present invention is to provide a front hood lock opening tool, which includes a handle, a traction rope, a cam, a push rod, a connecting rod and a housing. The handle is connected to the cam via the traction rope. The housing contains the cam and the push rod. The connecting rod is rotatably connected to the housing. The head end of the connecting rod serves as a rotating shaft. The traction rope pulls the cam to rotate within the housing, pressing against the push rod. The push rod pushes the connecting rod upward, prying open the lock head of the front hood lock.

[0007] The connecting rod is provided with a rod protrusion. In the initial state, the rod protrusion contacts the housing. By cooperating with the housing, the height of the rod protrusion is set, and the stroke of the connecting rod is controlled to control the stroke of the personnel pulling the traction rope to unlock. A shorter distance can be pulled, starting from the initial state where the height of the rod protrusion is relatively large, so that the lock head is pried open after the connecting rod is tilted up a short distance, making unlocking convenient. Alternatively, a longer distance can be pulled, starting from the initial state where the height of the rod protrusion is relatively small, so that the lock head is pried open after the connecting rod is tilted up a longer distance, preventing accidental activation.

[0008] As a preferred technical solution, the handle has a through hole, through which the traction rope passes and is fixed to the handle.

[0009] Furthermore, the cam is provided with a wheel protrusion that protrudes outside the housing, and the cam is fixedly connected to the traction rope through the wheel protrusion.

[0010] Furthermore, the housing includes a base and a cover plate. The cover plate is provided on the base. The base is divided into a rotation area and a pushing area by a partition. A rotating shaft is provided on the base in the rotation area. The cam rotates around the rotating shaft in the rotation area. The push rod passes through the partition plate. The two ends of the push rod are located in the rotation area and the pushing area, respectively.

[0011] As a preferred technical solution, the cover plate is fixed to the base by bolts.

[0012] As a preferred technical solution, a circular groove is provided in the rotating area, and the cam rotates within the circular groove.

[0013] Furthermore, the cam is provided with a groove, and a limiting pin extends into the groove through the cover plate. The cam's stroke is controlled by the cooperation between the groove and the limiting pin, so as to control the stroke of the person pulling the traction rope to unlock. The cam cannot rotate beyond the arc of the groove to prevent accidental activation.

[0014] Furthermore, the connecting rod includes a connecting rod and a pry bar. The pry bar is disposed between the connecting rods. The head end of the connecting rod serves as a rotating shaft, the middle part is provided with a rod protrusion, and the tail end is connected to the pry bar. The push rod pushes the connecting rod upward, thereby driving the pry bar to pry open the lock head of the front cover lock.

[0015] As a preferred technical solution, the rod protrudes into contact with the base in the initial state.

[0016] As a preferred technical solution, the tail end of the connecting rod is fixed to the pry bar by a fixing pin.

[0017] Furthermore, the connecting rod is arc-shaped with the bending direction pointing towards the lock head, which facilitates the setting of the rod protrusion. When the top rod pushes the connecting rod, the connecting rod can be tilted upwards by the shortest possible distance, saving material for the connecting rod.

[0018] The pry bar has a two-section arc shape. The head bends in the same direction as the connecting rod, while the tail bends in the opposite direction to the lock head, making it easy for the lock head to contact the pry bar. When the push rod pushes the connecting rod, the pry bar can be tilted upwards by the shortest possible distance, saving material for the connecting rod.

[0019] Furthermore, the contact point between the push rod and the connecting rod is located below the head end of the connecting rod, ensuring that the connecting rod tilts upwards when the push rod pushes the connecting rod.

[0020] Furthermore, the two ends of the push rod are disc-shaped, so that the two ends of the push rod can make stable contact with the cam and the connecting rod.

[0021] Furthermore, a spring is provided between one end of the top rod and the connecting rod and the partition plate, and the spring plays an automatic reset role.

[0022] Furthermore, in the initial state, there is a gap between one end of the push rod and the connecting rod to ensure that the connecting rod will not be directly pushed to pry open the lock head due to accidental contact by personnel in the initial state.

[0023] As a preferred technical solution, a mounting seat is provided under the base, which is shaped like a front cover lock. The base is installed on the front cover lock, and the mounting seat is attached to and fixed to the front cover lock.

[0024] As a preferred technical solution, the mounting base is fixed to the front cover lock by bolts.

[0025] One of the technical solutions of the present invention is to provide a method for opening a hood lock, which uses the aforementioned tool to open the hood lock and includes the following steps:

[0026] With the hood closed, only the handle protrudes from the bumper. With the hood open, the housing is installed under the hood and the front cover lock is engaged.

[0027] The operator stands at the front of the vehicle and pulls the tow rope by holding the handle, which causes the cam inside the front of the housing to rotate, pushing the push rod against the connecting rod. The upward-curving connecting rod pries open the spring lock inside the hood lock, thereby unlocking the hood lock and opening the engine hood.

[0028] After the hood is closed, the tow rope is no longer pulled. The connecting rod falls automatically due to gravity, the push rod resets automatically due to the spring, and pushes the cam back to its initial position, pulling the tow rope back.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] (1) The present invention uses the principle of cam steering linkage structure on the front cover lock to design a tool movable joint, so that when the hood is closed, personnel can stand at the front of the car and open the hood by means of a towing rope, thereby improving production efficiency;

[0031] (2) After the invention is installed on the front cover lock, the lock head of the front cover lock is pried open by the connecting rod. Since the connecting rod is separated from the lock head, the tool is not limited to the front cover lock of a specific model, and has strong applicability. It can be used in various models as needed.

[0032] (3) The present invention controls the stroke of the connecting rod and the cam by the cooperation of the sliding groove on the cam and the limiting pin, and the cooperation of the rod protrusion on the connecting rod and the base, so as to control the stroke of the person pulling the traction rope to unlock. It can pull a shorter distance to unlock easily, or pull a longer distance to prevent accidental contact.

[0033] (4) The present invention achieves automatic reset through the torsion spring on the top rod;

[0034] (5) The present invention leaves a gap between the connecting rod and the top rod in the initial state, so that the connecting rod will not directly pry the lock head due to accidental contact by personnel in the initial state. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the main structure of the front hood lock opening tool in an embodiment of the present invention;

[0036] Figure 2 This is a top view of the front hood lock opening tool in an embodiment of the present invention;

[0037] Figure 3 This is a three-dimensional structural diagram of the front hood lock opening tool in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the cooperation structure between the front cover lock opening tool and the front cover lock in an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of the hood lock opening tool in the hood-closed state in an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the structure of the front hood lock opening tool in the hood-open state in an embodiment of the present invention.

[0041] Explanation of markings in the diagram:

[0042] 1—Handle, 2—Traction rope, 3—Cam, 31—Shaft, 32—Wheel protrusion, 33—Slide groove, 4—Push rod, 5—Connecting rod, 51—Connecting rod, 511—Rod protrusion, 52—Pry bar, 6—Limit pin, 7—Base, 71—Mounting seat, 8—Cover plate, 9—Front cover lock, 91—Lock head. Detailed Implementation

[0043] The present invention will now be described in detail with reference to specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0044] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," etc., used to describe a common object only indicate different instances of the same object, and do not imply that the objects described in this way must be in a given order, whether temporally, spatially, sequentially, or in any other way.

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

[0046] Example:

[0047] A tool for opening a car hood lock, such as Figures 1 to 4 As shown, it includes a handle 1, a traction rope 2, a cam 3, a push rod 4, a connecting rod 5, and a housing. The handle 1 is connected to the cam 3 via the traction rope 2. The cam 3 and the push rod 4 are installed inside the housing. The connecting rod 5 is rotatably connected to the housing. The head end of the connecting rod 5 serves as a rotating shaft. The traction rope 2 pulls the cam 3 to rotate inside the housing, pressing against the push rod 4. The push rod 4 pushes the connecting rod 5 upward, prying open the lock head 91 of the front cover lock 9.

[0048] The connecting rod 5 is provided with a rod protrusion 511. In the initial state, the rod protrusion 511 contacts the housing. By cooperating with the housing, the height of the rod protrusion 511 is set, and the stroke of the connecting rod 5 is controlled to control the stroke of the person pulling the traction rope 2 to unlock. It can be pulled a short distance. In the initial state, the height of the rod protrusion 511 is relatively large, and the lock head 91 is pried open by the connecting rod 5 after a short upward movement, which is convenient for unlocking. It can also be pulled a long distance. In the initial state, the height of the rod protrusion 511 is relatively small, and the lock head 91 is pried open by the connecting rod 5 after a longer upward movement, which prevents accidental activation.

[0049] The handle 1 has a through hole, through which the traction rope 2 passes and is fixed to the handle 1;

[0050] The cam 3 is provided with a wheel protrusion 32, which protrudes from the housing. The cam 3 is fixedly connected to the traction rope 2 through the wheel protrusion 32.

[0051] The housing includes a base 7 and a cover plate 8. The cover plate 8 is provided on the base 7. The base 7 is divided into a rotating area and a pushing area by a partition. A rotating shaft 31 is provided on the base 7 in the rotating area. The cam 3 rotates around the rotating shaft 31 in the rotating area. The push rod 4 passes through the partition. The two ends of the push rod 4 are located in the rotating area and the pushing area, respectively.

[0052] The cover plate 8 is fixed to the base 7 by a pair of bolts;

[0053] A circular groove is provided in the rotating area, and the cam 3 rotates in the circular groove;

[0054] The cam 3 has a groove 33. The limiting pin 6 passes through the cover plate 8 and extends into the groove 33. The groove 33 cooperates with the limiting pin 6 to control the stroke of the cam 3, so as to control the stroke of the person pulling the traction rope 2 to unlock. The part of the cam 3 that exceeds the arc of the groove 33 cannot rotate to prevent accidental activation.

[0055] The connecting rod 5 includes a connecting rod 51 and a pry bar 52. The pry bar 52 is located between a pair of connecting rods 51. The head end of the connecting rod 51 serves as a rotating shaft, the middle part is provided with a rod protrusion 511, and the tail end is connected to the pry bar 52. The push rod 4 pushes the connecting rod 51 upward, which drives the pry bar 52 to pry open the lock head 91 of the front cover lock 9.

[0056] In the initial state, the rod protrusion 511 contacts the base 7;

[0057] The tail end of the connecting rod 51 is fixed to the pry bar 52 by a fixing pin;

[0058] The connecting rod 51 is arc-shaped, with the bending direction pointing towards the lock head 91, which facilitates the setting of the rod protrusion 511. When the push rod 4 pushes the connecting rod 5, the connecting rod 51 can be tilted upwards by the shortest possible distance, saving the material of the connecting rod 5.

[0059] The pry bar 52 is a two-section arc shape. The head bends in the same direction as the connecting rod 51, while the tail bends in the opposite direction to the lock head 91, so that the lock head 91 can contact the pry bar 52. When the push rod 4 pushes the connecting rod 5, the pry bar 52 can be tilted up as far as possible, saving the material of the connecting rod 5.

[0060] The contact point between the push rod 4 and the connecting rod 51 is located below the head end of the connecting rod 51, ensuring that the connecting rod 51 tilts upward when the push rod 4 pushes the connecting rod 5.

[0061] The two ends of the push rod 4 are disc-shaped, so that the two ends of the push rod 4 can make stable contact with the cam 3 and the connecting rod 51.

[0062] A spring is installed between one end of the top rod 4 and the connecting rod 51 and the partition plate, and the spring plays an automatic reset role.

[0063] In the initial state, there is a gap between one end of the top rod 4 and the connecting rod 51 to ensure that the connecting rod 5 will not be directly pushed to pry open the lock head 91 due to accidental contact by personnel in the initial state;

[0064] A mounting base 71 is provided under the base 7. The mounting base 71 is shaped like the front cover lock 9. The base 7 is installed on the front cover lock 9, and the mounting base 71 is attached to and fixed on the front cover lock 9.

[0065] Mounting bracket 71 is fixed to front cover lock 9 by bolts;

[0066] In this embodiment, the handle 1 is cylindrical with a height of 110mm, a diameter (outer diameter) of 22mm, and a surface roughness of 3.2. The traction rope 2 is made of steel wire rope with a length of 300mm and an outer diameter of 2mm.

[0067] A method for opening a car hood lock, such as Figure 5 and Figure 6 As shown, the specific steps for opening the front hood lock using the tools described above are as follows:

[0068] With the hood closed, only handle 1 protrudes from the bumper. With the hood open, it can be seen that the housing is installed on the front hood lock 9 under the hood.

[0069] The person stands at the front of the vehicle and pulls the tow rope 2 by holding the handle 1, which causes the cam 3 inside the front of the housing to rotate clockwise, pushing the push rod 4 to press against the connecting rod 5. The upward-curving connecting rod 5 pries open the spring lock 91 inside the front cover lock 9, thereby unlocking the front cover lock 9 and opening the hood.

[0070] After the hood is closed, the tow rope 2 is no longer pulled. The connecting rod 5 falls automatically due to gravity, and the push rod 4 is automatically reset due to the spring, pushing the cam 3 back to its initial position, and the tow rope 2 is pulled back.

[0071] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A tool for opening a vehicle hood lock, characterized in that, The tool includes a handle (1), a traction rope (2), a cam (3), a push rod (4), a connecting rod (5), and a housing. The handle (1) is connected to the cam (3) via the traction rope (2). The housing contains the cam (3) and the push rod (4). The connecting rod (5) is rotatably connected to the housing. The head end of the connecting rod (5) serves as a rotating shaft. The traction rope (2) pulls the cam (3) to rotate within the housing, pressing against the push rod (4). The push rod (4) pushes the connecting rod (5) upward, prying open the lock head (91) of the front cover lock (9). The connecting rod (5) is provided with a rod protrusion (511). In the initial state, the rod protrusion (511) contacts the housing. By cooperating with the housing, the height of the rod protrusion (511) is set, and the stroke of the connecting rod (5) is controlled to control the stroke of pulling the traction rope (2) to unlock.

2. The front hood lock opening tool according to claim 1, characterized in that, The cam (3) is provided with a wheel protrusion (32), which protrudes outside the housing. The cam (3) is fixedly connected to the traction rope (2) through the wheel protrusion (32).

3. The front hood lock opening tool according to claim 1, characterized in that, The housing includes a base (7) and a cover plate (8). The base (7) is provided with the cover plate (8). The base (7) is divided into a rotation area and a pushing area by a partition. A rotating shaft (31) is provided on the base (7) in the rotation area. The cam (3) rotates around the rotating shaft (31) in the rotation area. The push rod (4) passes through the partition. The two ends of the push rod (4) are located in the rotation area and the pushing area, respectively.

4. The front hood lock opening tool according to claim 3, characterized in that, The cam (3) has a groove (33) and a limiting pin (6) passes through the cover plate (8) and extends into the groove (33). The groove (33) cooperates with the limiting pin (6) to control the stroke of the cam (3) so as to control the stroke of pulling the traction rope (2) to unlock.

5. A tool for opening a front hood lock according to claim 3, characterized in that, The connecting rod (5) includes a connecting rod (51) and a pry bar (52). The pry bar (52) is located between the connecting rods (51). The head end of the connecting rod (51) serves as a rotating shaft, and a rod protrusion (511) is provided in the middle. The tail end is connected to the pry bar (52). The push rod (4) pushes the connecting rod (51) upward, which drives the pry bar (52) to pry open the lock head (91) of the front cover lock (9).

6. A tool for opening a front hood lock according to claim 5, characterized in that, The connecting rod (51) is arc-shaped, and the bending direction points towards the lock head (91); The pry bar (52) is a two-section arc shape, with the head bending in the same direction as the connecting rod (51) and the tail bending in the opposite direction to the lock head (91).

7. A tool for opening a front hood lock according to claim 5, characterized in that, The contact point between the top rod (4) and the connecting rod (51) is located below the head end of the connecting rod (51).

8. A tool for opening a front hood lock according to claim 5, characterized in that, The top rod (4) has disc-shaped ends.

9. A tool for opening a front hood lock according to claim 8, characterized in that, A spring is provided between one end of the top rod (4) near the connecting rod (51) and the partition.

10. A tool for opening a front hood lock according to claim 9, characterized in that, In the initial state, there is a gap between one end of the top rod (4) and the connecting rod (51).

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