Locking mechanism of light-weight automobile engine hood

Abstract

The invention relates to the field of automobiles, in particular to a light-weight automobile engine hood locking mechanism which comprises a main lock seat, an auxiliary lock seat is elastically installed in the main lock seat, a primary locking piece is arranged between the main lock seat and the auxiliary lock seat, a pin shell is fixedly installed on one side of the auxiliary lock seat, a pin seat is elastically installed in the pin shell, and a locking piece is arranged between the pin seat and the auxiliary lock seat. A protection pin is fixedly installed at the rear end of the pin base, penetrates out of the rear end of the pin shell and is in sliding fit with the pin shell, a column frame is rotatably installed at the front end of the interior of the pin shell, a control column is embedded in the end of the column frame, and a second guide groove and a first guide groove are formed in the side face of the pin base. The first guide groove is communicated with the second guide groove. The phenomenon that fingers are pinched when the engine hood is closed is avoided, safety is effectively improved, and meanwhile use is convenient.

Description

Technical Field

[0001] The invention relates to the field of automobiles, and in particular to a locking mechanism for a lightweight automobile engine hood. Background Art

[0002] Lightweight cars refer to cars whose weight is greatly reduced. Lightweighting not only refers to the reduction of the car's curb weight, but also has something to do with the reduction of the car's emissions, that is, lightweight cars can reduce the burden of air pollution. The car hood is an important part of the car, and it is a protective barrier for the engine and surrounding pipeline accessories.

[0003] When using a car hood, a locking mechanism is often used to fix it to prevent it from opening suddenly during driving and affecting driving safety. However, the existing locking mechanism does not have a protective function, which makes it very easy for the operator to pinch his fingers when closing the hood due to carelessness, posing a great safety hazard. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a locking mechanism for a lightweight automobile hood.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a locking mechanism of a lightweight automobile hood, comprising a main lock seat, a secondary lock seat being elastically installed inside the main lock seat, a primary locking piece being arranged between the main lock seat and the secondary lock seat, a pin shell being fixedly installed on one side of the secondary lock seat, a pin seat being elastically installed inside the pin shell, a protective pin being fixedly installed on the rear end of the pin seat, the protective pin passing through the rear end of the pin shell, the protective pin slidingly cooperating with the pin shell, a column frame being rotatably installed on the front end inside the pin shell, a control column being inlaid on the end of the column frame, a No. 2 guide groove and a No. 1 guide groove being respectively opened on the side surfaces of the pin seat, the No. 1 guide groove being connected with the No. 2 guide groove, the control column being located inside the No. 2 guide groove and the No. 1 guide groove, a protective seat being extended on the upper part of one side of the main lock seat, an oblique strip being extended on one side of the main lock seat close to the upper part of the protective seat, and a secondary locking piece being arranged inside the secondary lock seat.

[0006] Preferably, a spring body is fixedly mounted on the front end of the pin seat, and the end of the spring body is fixed to the inner front end of the pin housing.

[0007] Preferably, a limiting shell is fixedly installed at the upper end corner of the main lock seat, and a limiting rod is slidably installed inside the limiting shell. The limiting rod passes through the upper end of the limiting shell, and the upper end of the limiting rod is fixed to the secondary lock seat. An ejection spring is wound around the outer side of the limiting shell and the outer side of the limiting rod, one end of the ejection spring is fixed to the main lock seat, and the other end of the ejection spring is fixed to the secondary lock seat, and the ejection spring is in a tensioned state.

[0008] Preferably, the primary locking member includes a pin groove hollowed out and opened at the end of the main lock seat, a locking pin is elastically installed inside the pin groove, one end of the locking pin passes through the front end of the main lock seat, a locking block extends from the lower end of the secondary lock seat, the locking block is inserted into the square hole at the bottom of the main lock seat, the other end of the locking pin passes through the square hole at the bottom of the main lock seat, the other end of the locking pin is inserted into the socket on the locking block, and the lower end of the locking block is arranged in an inclined surface.

[0009] Preferably, a connecting seat is fixedly installed at one end of the locking pin, a pin cap is coaxially inlaid on the outer surface of the locking pin, the pin cap is slidably installed inside the pin groove, sliding ears are extended from the upper and lower ends of the pin cap, and sliding grooves are opened on the upper and lower end surfaces of the inner part of the pin groove, the sliding ears are slidably installed inside the sliding grooves, and a main lock spring is wound around the outer side of the locking pin, one end of the main lock spring is fixed to the pin cap, and the other end of the main lock spring is fixed to the inner front end of the pin groove.

[0010] Preferably, the secondary locking member includes a cavity hollowed out and opened inside the auxiliary lock seat, a lock tongue is elastically installed on the upper interior of the cavity, a lock slot is opened on the upper front part of the auxiliary lock seat, the lock tongue passes through the interior of the lock slot, the upper front edge of the lock tongue is arranged in an arc surface, a guide column is slidably installed through the inner bottom surface of the cavity, a push seat is fixedly installed on the upper end of the guide column, a push tongue rack is rotatably installed between the upper end of the push seat and the lower end of the lock tongue, and the push tongue rack is arranged at an angle.

[0011] Preferably, an adaptation port is opened at the other side of the auxiliary lock seat near the front edge, the adaptation port is communicated with the cavity, the push seat extends from the inside of the adaptation port, and a fixing cap is fixedly installed at the edge of the other side of the auxiliary lock seat, and a shift shaft is rotatably installed on the end of the fixing cap, and a top ear extends from the end of the shift shaft, and a top frame is rotatably installed on one end of the top ear, and the end of the top frame is rotatably connected to the push seat, and a shift frame is fixedly installed on the outer surface of the shift shaft, and a torsion spring is arranged between the shift frame and the fixing cap.

[0012] Preferably, a guide rod is slidably installed through the rear end of the lock tongue, the end of the guide rod is fixed to the inner wall of the cavity, a secondary lock spring is wound around the outside of the guide rod, one end of the secondary lock spring is fixed to the lock tongue, and the other end of the secondary lock spring is fixed to the inner wall of the cavity.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the hood is unlocked and popped up once, the secondary lock seat will pop up synchronously. At this time, the protective pin on the secondary lock seat moves up synchronously, so that its end slides along the inclined surface of the inclined strip to press the protective pin toward the inside of the pin shell. At the same time, the pin seat moves synchronously. At this time, the control column moves along the inclined surface of the upper part of the No. 2 guide groove to the corner of the upper part of the No. 2 guide groove. When the hood is closed, the protective pin will gradually separate from the inclined strip during the downward movement of the secondary lock seat, and the spring body will push the pin seat to eject the protective pin. In this process, the control column moves along the inclined surface of the side wall of the No. 2 guide groove to the bottom of the No. 2 guide groove to adapt to the ejection operation of the protective pin. At this time, the ejected protective pin will press on the protective seat when it moves down to support the secondary lock seat, so that the secondary lock seat cannot continue to move down, so that a certain gap is left when the hood is closed, so that it cannot be completely closed at one time, so as to avoid pinching fingers, thereby improving safety.

[0015] 2. When the secondary lock seat can no longer move downward, the pressed hood can be released. At this time, the ejection spring will lift the secondary lock seat again, and the protective pin will move upward again. Under the action of the bevel bar, the ejected protective pin can be pushed into the pin housing. During this process, the control column will move along the inclined surface at the bottom of the No. 1 guide groove to the corner at the top of the No. 1 guide groove, and then the hood is pressed again. At this time, the protective pin is separated from the bevel bar again, and the spring body will push the pin seat, so that the control column is stuck in the No. 2 guide groove and the concave part at the top of the pin seat, so that the protective pin remains in the retracted state, so that the protective pin can pass through the protective seat smoothly, and the secondary lock seat can move down and reset normally to completely close the hood. The process only requires two presses, which is easy to operate and effectively facilitates use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a locking mechanism of a lightweight automobile hood according to the present invention;

[0017] Figure 2 It is an internal view of a pin housing of a locking mechanism of a lightweight automobile hood according to the present invention;

[0018] Figure 3 It is a schematic diagram of a pin seat of a locking mechanism of a lightweight automobile hood according to the present invention;

[0019] Figure 4 It is a schematic diagram of another viewing angle of a locking mechanism of a lightweight automobile hood according to the present invention;

[0020] Figure 5 This is an internal view of a main lock seat of a locking mechanism of a lightweight automobile hood according to the present invention;

[0021] Figure 6 A locking mechanism for a lightweight automobile hood according to the present invention Figure 5 A magnified view of middle;

[0022] Figure 7 This is an internal view of a secondary lock seat of a locking mechanism for a lightweight automobile hood according to the present invention;

[0023] Figure 8 The present invention is a cross-sectional view of an ejection spring of a locking mechanism for a lightweight automobile hood.

[0024] In the figure: 1. main lock seat; 2. auxiliary lock seat; 3. lock groove; 4. lock tongue; 5. oblique strip; 6. protection seat; 7. protection pin; 8. pin shell; 9. connecting seat; 10. limit rod; 11. pin groove; 12. limit shell; 13. ejection spring; 14. adaptation mouth; 15. push seat; 16. pull frame; 17. lock pin; 18. fixing cap; 19. torsion spring; 20. No. 1 guide groove; 21. lock block; 22. cavity; 23. guide column; 24. auxiliary lock spring; 25. guide rod; 26. push tongue frame; 27. top ear; 28. top frame; 29. ​​pull shaft; 30. main lock spring; 31. sliding ear; 32. slide groove; 33. pin cap; 34. pin seat; 35. column frame; 36. control column; 37. spring body; 38. No. 2 guide groove. DETAILED DESCRIPTION

[0025] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0026] like Figure 1-Figure 8The locking mechanism of a lightweight automobile hood shown in the figure comprises a main lock seat 1, a secondary lock seat 2 is elastically installed inside the main lock seat 1, the main lock seat 1 plays a role of bearing and guiding the secondary lock seat 2, a primary locking piece is arranged between the main lock seat 1 and the secondary lock seat 2, a pin shell 8 is fixedly installed on one side of the secondary lock seat 2, a pin seat 34 is elastically installed inside the pin shell 8, the pin shell 8 plays a role of bearing the pin seat 34, a protective pin 7 is fixedly installed at the rear end of the pin seat 34, the pin seat 34 plays a role of bearing the protective pin 7, the protective pin 7 passes through the rear end of the pin shell 8, the protective pin 7 and the pin shell 8 are slidably matched, a column frame 35 is rotatably installed at the front end of the pin shell 8, the column frame 35 can be rotatably installed, and can adapt to the movement of the control column 36 in the first guide groove 20 and the second guide groove 38, and the end of the column frame 35 is inlaid with A second guide groove 38 and a first guide groove 20 are respectively provided on the sides of the control column 36 and the pin seat 34. The first guide groove 20 is connected to the second guide groove 38. The control column 36 is located inside the second guide groove 38 and the first guide groove 20. The cooperation between the control column 36 and the first guide groove 20 and the second guide groove 38 can control whether the protective pin 7 is extended. A protective seat 6 is extended from the upper part of one side of the main lock seat 1. The cooperation between the protective seat 6 and the protective pin 7 can support the auxiliary lock seat 2 so that the auxiliary lock seat 2 cannot move further downward, so that a certain gap is left when the hood is closed, so that it cannot be completely closed at one time to avoid pinching fingers. An oblique strip 5 is extended from one side of the main lock seat 1 near the top of the protective seat 6. The oblique strip 5 plays a role in pressing the protective pin 7, and a secondary locking member is arranged inside the auxiliary lock seat 2.

[0027] A spring body 37 is fixedly mounted on the front end of the pin seat 34 , and the end of the spring body 37 is fixed to the inner front end of the pin housing 8 . The spring body 37 serves to support the pin seat 34 .

[0028] A limit shell 12 is fixedly installed at the upper corner of the main lock seat 1, and a limit rod 10 is slidably installed inside the limit shell 12. The limit shell 12 and the limit rod 10 serve to limit the pop-up height of the secondary lock seat 2. The limit rod 10 passes through the upper end of the limit shell 12, and the upper end of the limit rod 10 is fixed to the secondary lock seat 2. The outer side of the limit shell 12 and the outer side of the limit rod 10 are wrapped with an ejection spring 13, one end of the ejection spring 13 is fixed to the main lock seat 1, and the other end of the ejection spring 13 is fixed to the secondary lock seat 2. The ejection spring 13 is in a tensioned state, and the ejection spring 13 serves to make the secondary lock seat 2 pop up.

[0029] The primary locking member includes a pin groove 11 hollowed out and opened at the end of the main lock seat 1, and a lock pin 17 is elastically installed inside the pin groove 11. One end of the lock pin 17 passes through the front end of the main lock seat 1, and a lock block 21 extends from the lower end of the secondary lock seat 2. The lock block 21 is inserted into the square hole at the bottom of the main lock seat 1, and the other end of the lock pin 17 passes through the square hole at the bottom of the main lock seat 1, and the other end of the lock pin 17 is inserted into the insertion hole on the lock block 21. The cooperation between the lock pin 17 and the lock block 21 plays the role of fixing the secondary lock seat 2 in the main lock seat 1. The lower end of the lock block 21 is arranged with an inclined surface. When the lock block 21 moves downward, the inclined surface of the lock block 21 will push the lock pin 17 to cause the lock pin 17 to move sideways. When the secondary lock seat 2 is fully reset, the lock pin 17 will be reinserted into the insertion hole on the lock block 21 under the push of the main lock spring 30 to fix the reset secondary lock seat 2.

[0030] One end of the lock pin 17 is fixedly mounted with a connecting seat 9, which can be connected to the inner cable of the vehicle, so that the lock pin 17 can be pulled out of the lock block 21 by pulling the inner cable of the vehicle. Since the control by connecting with the inner cable of the vehicle is a prior art and has been widely used, it is not elaborated in detail here. The outer surface of the lock pin 17 is coaxially inlaid with a pin cap 33, and the pin cap 33 is slidably mounted inside the pin groove 11. The pin cap 33 plays the role of being pushed by the main lock spring 30. Sliding ears 31 extend from the upper and lower ends, and sliding grooves 32 are provided on the upper and lower end surfaces of the inner part of the pin groove 11. The sliding ears 31 and the sliding grooves 32 prevent the lock pin 17 from rotating. The sliding ears 31 are slidably installed inside the sliding grooves 32. A main lock spring 30 is wound around the outer side of the lock pin 17. One end of the main lock spring 30 is fixed to the pin cap 33, and the other end of the main lock spring 30 is fixed to the inner front end of the pin groove 11. The main lock spring 30 allows the lock pin 17 to be inserted into the socket on the lock block 21.

[0031] The secondary locking member includes a cavity 22 hollowed out and opened inside the secondary lock seat 2, a lock tongue 4 is elastically installed on the upper part of the cavity 22, a lock groove 3 is opened at the upper front part of the secondary lock seat 2, the lock tongue 4 can fix the lock ring on the hood in the lock groove 3, the lock tongue 4 passes through the lock groove 3, and the upper front edge of the lock tongue 4 is arranged in an arc surface. When the hood is pressed to close, the lock ring on the hood will push the lock tongue 4, so as to use the arc surface on the lock tongue 4 to drive the lock tongue 4 to move sideways. When the lock ring is fully in After entering the lock groove 3, the lock tongue 4 is reset under the push of the secondary lock spring 24 to fix the lock ring on the hood in the lock groove 3. A guide column 23 is slidably installed through the inner bottom surface of the cavity 22. A push seat 15 is fixedly installed on the upper end of the guide column 23. The guide column 23 plays a role in guiding the push seat 15. A push tongue frame 26 is rotatably installed between the upper end of the push seat 15 and the lower end of the lock tongue 4. The push seat 15 can drive the push tongue frame 26 to move, so that the lock tongue 4 is out of the lock groove 3, and the push tongue frame 26 is inclined.

[0032] An adaption port 14 is provided near the front edge of the other side of the auxiliary lock seat 2, and the adaption port 14 is communicated with the cavity 22. The push seat 15 extends from the inside of the adaption port 14, and the adaption port 14 plays a role in adapting to the movement of the push seat 15. A fixing cap 18 is fixedly installed at the edge of the other side of the auxiliary lock seat 2, and a dial shaft 29 is rotatably installed at the end of the fixing cap 18. The fixing cap 18 plays a role in connecting the dial shaft 29. A top ear 27 extends from the end of the dial shaft 29, and a top frame 28 is rotatably installed at one end of the top ear 27. The end of the top frame 28 is rotatably connected to the push seat 15. The dial shaft 29 can drive the top ear 27 to rotate and move the top frame 28 to push the push seat 15 so that the push seat 15 can move up. A dial frame 16 is fixedly installed on the outer surface of the dial shaft 29. The dial frame 16 plays a role in facilitating the rotation of the dial shaft 29. A torsion spring 19 is arranged between the dial frame 16 and the fixing cap 18, and the torsion spring 19 plays a role in resetting the dial frame 16 after being dialed.

[0033] A guide rod 25 is slidably installed through the rear end of the lock tongue 4, and the end of the guide rod 25 is fixed to the inner wall of the cavity 22. The guide rod 25 plays a role in guiding the lock tongue 4. A secondary lock spring 24 is wound around the outside of the guide rod 25. One end of the secondary lock spring 24 is fixed to the lock tongue 4, and the other end of the secondary lock spring 24 is fixed to the inner wall of the cavity 22. The secondary lock spring 24 can push the lock tongue 4 out to fix the lock ring on the hood in the lock groove 3.

[0034] When in use, by pulling the cable inside the car, the lock pin 17 is extracted from the lock block 21, so that the auxiliary lock seat 2 can be pushed up by the ejection spring 13 when the lock pin 17 is lost, so that the hood pops up. At this time, the protective pin 7 on the auxiliary lock seat 2 moves up synchronously, so that its end slides along the inclined surface of the inclined strip 5 to press the protective pin 7 toward the inside of the pin shell 8, and the pin seat 34 moves synchronously. At this time, the control column 36 moves along the inclined surface of the upper part of the No. 2 guide groove 38 to the upper corner of the No. 2 guide groove 38, and then the finger is inserted into the gap where the hood pops up to push the dial frame 16, thereby driving the top ear 27 on the dial shaft 29 to rotate, so that the top frame 28 moves, so as to push the push seat 15, so that the push seat 15 can The hood is then lifted up to fully open the hood. When the hood is pressed to close, the lock ring on the hood will push the lock tongue 4 to use the arc surface on the lock tongue 4 to drive the lock tongue 4 to move sideways. When the lock ring fully enters the lock groove 3, the lock tongue 4 is reset under the push of the secondary lock spring 24 to fix the lock ring on the hood in the lock groove 3. Then continue to press the hood. At this time, the hood will drive the secondary lock seat 2 to move downward. In this process, the protective pin 7 will gradually separate from the oblique strip 5, and the spring body 37 will push the pin seat 34 to push the protective pin 7 out. During this process, the control column 36 moves along the side wall inclined surface of the second guide groove 38 to the bottom of the second guide groove 38 to adapt to the ejection operation of the protective pin 7. At this time, the ejected protective pin 7 will press on the protective seat 6 when moving downward to support the auxiliary lock seat 2, so that the auxiliary lock seat 2 cannot move further downward, so that a certain gap is left when the engine hood is closed, so that it cannot be completely closed at one time to avoid pinching fingers. When the auxiliary lock seat 2 cannot move further downward, the pressed engine hood can be released. At this time, the ejection spring 13 will lift the auxiliary lock seat 2 again, and the protective pin 7 will move up again, so that under the action of the inclined strip 5, the ejected protective pin 7 is pushed into the pin shell 8. During this process, the control column 36 will move along the first guide groove 20 The lower inclined surface moves to the corner of the upper part of the No. 1 guide groove 20, and then the hood is pressed again. At this time, the protective pin 7 is separated from the inclined strip 5 again, and the spring body 37 will push the pin seat 34, so that the control column 36 is stuck in the No. 2 guide groove 38 and the recessed part of the upper part of the pin seat 34, so that the protective pin 7 remains in the retracted state, so that the protective pin 7 can smoothly pass through the protective seat 6, so that the secondary lock seat 2 can move down and reset normally. At this time, the inclined surface of the lock block 21 will push the lock pin 17 to move the lock pin 17 sideways. When the secondary lock seat 2 is fully reset, the lock pin 17 will be reinserted into the socket on the lock block 21 under the push of the main lock spring 30, so as to fix the reset secondary lock seat 2, and then lock the hood, so that the hood is completely closed.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A locking mechanism for a lightweight automobile hood, comprising a main lock seat (1), characterized in that: The main lock seat (1) is elastically mounted with a secondary lock seat (2), a primary locking member is arranged between the main lock seat (1) and the secondary lock seat (2), a pin shell (8) is fixedly mounted on one side of the secondary lock seat (2), a pin seat (34) is elastically mounted inside the pin shell (8), a protective pin (7) is fixedly mounted at the rear end of the pin seat (34), the protective pin (7) extends through the rear end of the pin shell (8), the protective pin (7) and the pin shell (8) are slidably matched, a column frame (35) is rotatably mounted on the front end of the pin shell (8), A control column (36) is embedded at the end of the column frame (35), and a second guide groove (38) and a first guide groove (20) are respectively opened on the side of the pin seat (34), and the first guide groove (20) is communicated with the second guide groove (38). The control column (36) is located inside the second guide groove (38) and the first guide groove (20). A protective seat (6) is extended from the upper part of one side of the main lock seat (1), and an oblique strip (5) is extended from one side of the main lock seat (1) near the upper part of the protective seat (6), and a secondary locking piece is arranged inside the auxiliary lock seat (2).

2. The locking mechanism of a lightweight automobile hood according to claim 1, characterized in that: A spring body (37) is fixedly mounted on the front end of the pin seat (34), and the end of the spring body (37) is fixed to the inner front end of the pin housing (8).

3. The locking mechanism of a lightweight automobile hood according to claim 1, characterized in that: A limiting shell (12) is fixedly installed at the upper corner of the main lock seat (1), and a limiting rod (10) is slidably installed inside the limiting shell (12). The limiting rod (10) passes through the upper end of the limiting shell (12), and the upper end of the limiting rod (10) is fixed to the auxiliary lock seat (2). An ejection spring (13) is wound around the outer side of the limiting shell (12) and the outer side of the limiting rod (10), one end of the ejection spring (13) is fixed to the main lock seat (1), and the other end of the ejection spring (13) is fixed to the auxiliary lock seat (2), and the ejection spring (13) is in a tensioned state.

4. The locking mechanism of a lightweight automobile hood according to claim 1, characterized in that: The primary locking member comprises a pin groove (11) hollowed out and opened at the end of the main lock seat (1), a lock pin (17) is elastically installed inside the pin groove (11), one end of the lock pin (17) passes through the front end of the main lock seat (1), a lock block (21) extends from the lower end of the auxiliary lock seat (2), the lock block (21) is inserted into a square hole at the bottom of the main lock seat (1), the other end of the lock pin (17) passes through the square hole at the bottom of the main lock seat (1), the other end of the lock pin (17) is inserted into the insertion hole on the lock block (21), and the lower end of the lock block (21) is arranged in an inclined surface.

5. The locking mechanism of a lightweight automobile hood according to claim 4, characterized in that: A connecting seat (9) is fixedly installed at one end of the lock pin (17), and a pin cap (33) is coaxially inlaid on the outer surface of the lock pin (17). The pin cap (33) is slidably installed in the interior of the pin groove (11). Sliding ears (31) extend from the upper and lower ends of the pin cap (33). The upper and lower end surfaces of the interior of the pin groove (11) are provided with sliding grooves (32). The sliding ears (31) are slidably installed in the interior of the sliding grooves (32). A main lock spring (30) is wound around the outer side of the lock pin (17), and one end of the main lock spring (30) is fixed to the pin cap (33), and the other end of the main lock spring (30) is fixed to the internal front end of the pin groove (11).

6. The locking mechanism of a lightweight automobile hood according to claim 1, characterized in that: The secondary locking member comprises a cavity (22) hollowed out and opened inside the auxiliary lock seat (2), a lock tongue (4) is elastically installed on the upper part of the cavity (22), a lock groove (3) is opened at the front part of the upper end of the auxiliary lock seat (2), the lock tongue (4) passes through the inside of the lock groove (3), the upper front edge of the lock tongue (4) is arranged in an arc surface, a guide column (23) is slidably installed through the inner bottom surface of the cavity (22), a push seat (15) is fixedly installed on the upper end of the guide column (23), a tongue push frame (26) is rotatably installed between the upper end of the push seat (15) and the lower end of the lock tongue (4), and the tongue push frame (26) is arranged in an inclined manner.

7. The locking mechanism of a lightweight automobile hood according to claim 6, characterized in that: An adapting opening (14) is provided on the other side of the auxiliary lock seat (2) near the front edge, the adapting opening (14) is communicated with the cavity (22), the push seat (15) extends from the inside of the adapting opening (14), a fixing cap (18) is fixedly installed on the edge of the other side of the auxiliary lock seat (2), a shifting shaft (29) is rotatably installed on the end of the fixing cap (18), a top ear (27) extends from the end of the shifting shaft (29), a top frame (28) is rotatably installed on one end of the top ear (27), the end of the top frame (28) is rotatably connected to the push seat (15), a shifting frame (16) is fixedly installed on the outer surface of the shifting shaft (29), and a torsion spring (19) is arranged between the shifting frame (16) and the fixing cap (18).

8. The locking mechanism of a lightweight automobile hood according to claim 6, characterized in that: A guide rod (25) is slidably mounted through the rear end of the lock tongue (4), the end of the guide rod (25) is fixed to the inner wall of the cavity (22), a secondary lock spring (24) is wound around the outer side of the guide rod (25), one end of the secondary lock spring (24) is fixed to the lock tongue (4), and the other end of the secondary lock spring (24) is fixed to the inner wall of the cavity (22).

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