A locking device and an automobile

Abstract

The present invention relates to the technical field of automobile parts, and discloses a lock device and an automobile. The lock device comprises a base plate, a guide plate, a pawl assembly, a ratchet wheel and a driving mechanism. The guide plate is arranged on the base plate, the pawl assembly comprises a pawl, a return member and a rivet column. The rivet column is rotatably arranged on the base plate, the pawl is rotatably arranged on the rivet column, the ratchet wheel is rotatably arranged on the base plate, the ratchet wheel comprises a locking groove matched with a lock buckle of an automobile hood, the ratchet wheel has an unlocking position, a semi-locking position and a fully locked position in the forward rotation direction, the output end of the driving mechanism is connected to the rivet column, the driving mechanism can drive the pawl to rotate, the ratchet wheel rotates from the unlocking position to the semi-locking position, at which time the pawl is disengaged from the guide plate at the semi-locking position, the pawl rotates around the rivet column and couples with the ratchet wheel to drive the ratchet wheel to rotate synchronously to the fully locked position, and the locking groove is locked with the lock buckle. The lock device can be locked automatically, is easy to operate, saves physical strength, and improves the user experience.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and in particular relates to a lock device and an automobile. Background Art

[0002] A car lock device is a device installed inside the engine compartment or luggage compartment of a car and can reliably lock the hatch.

[0003] At present, the lock device generally has a two-stage locking function, which requires two operations to unlock. The first step: open the first stage lock of the lock device by pressing the button in the cab, so that the lock device rotates from the fully locked position to the half-locked position; the second step: the driver or operator reaches into the hatch compartment at the front of the car and releases the handle to open the second stage lock. When the hatch needs to be closed, it needs to be pressed hard or dropped to achieve safe locking by relying on the gravity and pressure of the hatch.

[0004] The locking operation of the existing lock device requires a large force, which consumes a lot of physical strength of the operator, is inconvenient to operate, and reduces the user experience. At the same time, the hatch cover is locked multiple times, which easily causes damage to the structural parts of the lock device and reduces the life of the lock device. Summary of the invention

[0005] An object of the present invention is to provide a lock device to achieve automatic locking of the lock device, save user's physical strength, and increase the service life of the lock device.

[0006] To achieve this purpose, the technical solution adopted by the present invention is:

[0007] A locking device, comprising:

[0008] substrate;

[0009] A guide plate, wherein the guide plate is arranged on the base plate;

[0010] A pawl assembly, the pawl assembly comprising a pawl, a return member and a rivet post, the rivet post being rotatably disposed on the base plate, and the pawl being rotatably disposed on the rivet post through the return member;

[0011] A ratchet wheel is rotatably arranged on the base plate, the ratchet wheel comprises a locking groove matched with a lock buckle of the automobile hood, the ratchet wheel has an unlocking position, a half-locking position and a fully locked position in the forward rotation direction, when the ratchet wheel is located at the unlocking position, the pawl is engaged with the guide plate, the lock buckle is pressed against the locking groove, so that the ratchet wheel is supported on the rivet column,

[0012] A driving mechanism, wherein the output end of the driving mechanism is connected to the rivet column and is configured to be able to drive the pawl to rotate positively through the rivet column when triggered, so that the ratchet rotates positively from the unlocked position to the semi-locked position; the pawl is disengaged from the guide plate at the semi-locked position, and the pawl rotates around the rivet column and couples with the ratchet to drive the ratchet to rotate synchronously to the fully locked position, so that the locking groove and the lock buckle are locked and matched.

[0013] Furthermore, the lock device also includes a ratchet spring, one end of which is fixedly disposed on the base plate, and the other end of which is located below the rivet post and abuts against the rivet post, so that the ratchet has a tendency to rotate in the opposite direction.

[0014] Furthermore, the pawl assembly also includes a resilient member, which includes a connected connecting plate and a supporting plate, one end of the connecting plate is rotatably disposed on the base plate, the other end of the connecting plate is sleeved on the rivet column, and the supporting plate is used to support the ratchet.

[0015] Furthermore, the locking device also includes a first switch arranged on the substrate, the ratchet also includes a pressing portion, and the first switch is electrically connected to the driving mechanism; when the ratchet is located in the unlocking position, the pressing portion presses against the first switch to close the driving mechanism; when the ratchet leaves the unlocking position, the pressing portion disengages from the first switch to trigger the driving mechanism.

[0016] Furthermore, the guide plate has a first outer edge, the pawl has a flange, and when the ratchet is located between the unlocking position and the semi-locking position, the flange is slidably pressed against the first outer edge.

[0017] Furthermore, the guide plate also has a second outer edge connected to the first outer edge, and the second outer edge is recessed inwardly to form an avoidance groove for giving way to the pawl.

[0018] Furthermore, the pawl has a clamping portion, and the ratchet has a limiting groove. When the pawl rotates around the rivet column, the clamping portion is clamped and connected with the limiting groove.

[0019] Furthermore, the pawl has a hanging portion, the return member is sleeved on the rivet column, one end of the return member is fixedly disposed on the rivet column, and the other end of the return member abuts against the hanging portion, so that the pawl has a tendency to rotate in the forward direction.

[0020] Furthermore, the base plate is provided with a slide groove, and the lock buckle is slidably arranged in the slide groove.

[0021] Another object of the present invention is to provide a car to realize automatic locking of a lock device, save user's physical strength, and increase the service life of the lock device.

[0022] To achieve this purpose, the technical solution adopted by the present invention is:

[0023] A car comprises the above locking device.

[0024] The beneficial effects of the present invention are as follows: when the ratchet is in the unlocked position, the pawl engages with the guide plate, and the driving mechanism is triggered to drive the pawl to rotate to the semi-locked position, and the ratchet rotates forward to the semi-locked position, the pawl is coupled with the ratchet, and the driving mechanism continues to drive the pawl and the ratchet to rotate synchronously to the fully locked position, thereby achieving the locking cooperation between the ratchet and the lock buckle. The locking of the lock device can be achieved by triggering the driving mechanism, which is easy to operate and does not require strong pressure or dropping of the hatch, thus saving the user's physical strength and improving the user's experience. At the same time, the damage to the structural parts of the lock device is reduced, which is conducive to extending the service life of the lock device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a lock device provided by an embodiment of the present invention;

[0026] Figure 2 is an end view of a lock device provided by an embodiment of the present invention with the ratchet spring removed and in an unlocked position;

[0027] Figure 3 is an end view of a lock device provided by an embodiment of the present invention with the ratchet spring removed and in a semi-locked position;

[0028] Figure 4 is an end view of the lock device provided by an embodiment of the present invention without the ratchet spring in a fully locked position;

[0029] Figure 5 is a schematic structural diagram of a substrate and a cable provided in an embodiment of the present invention;

[0030] Figure 6 is a schematic structural diagram of a ratchet spring and a pawl assembly without a rivet column from a first viewing angle provided by an embodiment of the present invention;

[0031] Figure 7 is a schematic structural diagram of a ratchet spring and a pawl assembly without a rivet column at a second viewing angle provided by an embodiment of the present invention;

[0032] Figure 8 is a structural exploded view of a ratchet spring and a pawl assembly provided by an embodiment of the present invention;

[0033] Fig. 9 is a schematic structural diagram of a guide plate provided in an embodiment of the present invention;

[0034] Fig.10 is a schematic structural diagram of a pawl provided by an embodiment of the present invention;

[0035] Fig.11 It is a schematic diagram of the structure of a ratchet provided by an embodiment of the present invention.

[0036] The names and numbers of the components in the figure are as follows:

[0037] 10. Lock; 1. Base plate; 11. Slide groove; 2. Guide plate; 21. First outer edge; 22. Second outer edge; 3. Paw; 31. Flange; 32. Clamping part; 33. Hanging part; 4. Rivet column; 5. Ratchet; 51. Hook; 511. Locking groove; 52. Pressing part; 53. Limiting groove; 54. Connecting arm; 541. Thickening part; 6. Rebound part; 61. Connecting plate; 62. Supporting plate; 7. Cable; 71. Ring; 8. Ratchet spring; 9. Return part. DETAILED DESCRIPTION

[0038] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the convenience of description, only the parts related to the present invention are shown in the accompanying drawings, not all.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0043] The present embodiment discloses a car, which includes an engine compartment, a luggage compartment, a hood and a locking device. A lock buckle 10 is provided on the hood. The locking device is installed in the engine compartment or the luggage compartment, and can achieve reliable locking of the hood by locking the lock buckle 10.

[0044] At present, when closing the hatch of a car, it is necessary to press hard or drop the hatch downward, and rely on the gravity and pressure of the hatch to achieve safe locking. The locking operation of the existing lock device requires a large force, which is inconvenient to operate. At the same time, it is easy to cause damage to the lock device, reducing the service life of the lock device.

[0045] For the convenience of description, the forward direction in this embodiment is as follows Figure 2-Figure 4 The direction indicated by the arrow is clockwise, and the reverse direction is the opposite direction to the positive direction (counterclockwise).

[0046] To solve the above problems, Figure 1-Figure 4 As shown, this embodiment also discloses a lock device, which includes a base plate 1, a guide plate 2, a pawl assembly, a driving mechanism and a ratchet 5. The base plate 1 of this embodiment is fixedly mounted on the front crossbeam of the engine compartment or the luggage compartment. Figure 5 As shown, the base plate 1 is a sheet metal part, and a slide groove 11 is provided on the base plate 1, and the lock buckle 10 is slidably arranged in the slide groove 11. The slide groove 11 extends in the vertical direction and has an opening at the top. The lock buckle 10 is inserted into the slide groove 11 and can cooperate with the locking groove 511 of the ratchet 5 to achieve the locking of the hatch cover.

[0047] Specifically, the guide plate 2 is arranged on the base plate 1, the pawl assembly includes a pawl 3, a return member 9 and a rivet post 4, the rivet post 4 is rotatably arranged on the base plate 1, and the pawl 3 is rotatably arranged on the rivet post 4 through the return member 9. The ratchet 5 is rotatably arranged on the base plate 1, and the ratchet 5 includes a locking groove 511 that cooperates with the lock buckle 10. The ratchet 5 has an unlocking position, a half-locking position and a fully locked position in the forward rotation direction. When the ratchet 5 is in the unlocking position, the pawl 3 is engaged with the guide plate 2, and the lock buckle 10 is pressed against the locking groove 511, so that the ratchet 5 is supported on the rivet post 4.

[0048] The output end of the driving mechanism is connected to the rivet column 4. When the driving mechanism is triggered, the rivet column 4 can drive the pawl 3 to rotate forward, so that the rivet column 4 moves forward to the semi-locked position, and the ratchet 5 rotates from the unlocked position to the semi-locked position by the gravity of the lock buckle 10 and the hatch cover. The pawl 3 is disengaged from the guide plate 2 at the semi-locked position, and the pawl 3 rotates around the rivet column 4 and couples with the ratchet 5 to drive the ratchet 5 to rotate synchronously to the fully locked position, so that the locking groove 511 is locked with the lock buckle 10 to achieve the self-priming locking of the hatch cover.

[0049] In this embodiment, when the driving mechanism is triggered and can drive the rivet column 4 and the pawl to rotate from the unlocked position to the semi-locked position, the ratchet 5 rotates forward to the semi-locked position under the pressure of the lock buckle 10, the pawl 3 is disengaged from the guide plate 2, and the pawl 3 rotates forward around the rivet column 4 under the action of the restoring force of the return member 9, and is coupled with the ratchet 5. The driving mechanism continues to drive the pawl 3 and the ratchet 5 to move synchronously to the fully locked position, so that the ratchet 5 and the lock buckle 10 are locked together.

[0050] In other alternative embodiments, the pawl 3 may also rotate in the reverse direction, as long as the pawl 3 and the ratchet wheel 5 can be coupled in the semi-locked position.

[0051] The lock device can realize automatic locking of the lock device by triggering the driving mechanism, and the operation is simple and convenient, and there is no need to press hard or drop the hatch cover, which saves the user's physical strength and improves the user's experience. At the same time, the damage to the structural parts of the lock device is reduced, which is conducive to extending the service life of the lock device.

[0052] The driving mechanism of this embodiment includes a motor (not shown) and a cable 7. The output end of the motor is connected to the cable 7, and the cable 7 is connected to the rivet column 4. The motor pulls the cable 7 to contract to overcome the restoring force of the ratchet spring 8, thereby driving the pawl 3 to rotate in the forward direction.

[0053] like Figure 1 As shown, the lock device further includes a ratchet spring 8, one end of which is fixedly disposed on the base plate 1, and the other end of the ratchet spring 8 is located below the rivet column 4 and abuts against the rivet column 4, so that the ratchet 5 has a tendency to rotate in the opposite direction.

[0054] In this embodiment, a mounting plate is fixedly arranged on the base plate 1, and the mounting plate is located above the guide plate 2. The ratchet spring 8 is sleeved on the mounting plate, and the ratchet spring 8 provides a restoring force to the ratchet 5 through the rivet column 4, so as to drive the ratchet 5 to rotate in the opposite direction to the unlocking position. Specifically, the lock catch 10 presses the ratchet 5 under the gravity of the hatch, and the ratchet spring 8 supports the ratchet 5 through the lock catch 10 and the rivet column 4, so that the ratchet 5 is firmly in the unlocking position.

[0055] like Figure 2-Figure 4As shown, the guide plate 2 and the ratchet 5 are coaxially arranged on the base plate 1. When the ratchet 5 rotates from the unlocking position to the fully locked position, the guide plate 2 is fixed relative to the base plate 1, and the driving mechanism drives the pawl 3 to rotate positively relative to the base plate 1, and the pawl 3 is engaged with the guide plate 2, so that the guide plate 2 can limit the pawl 3 to prevent the pawl 3 from rotating positively around the rivet column 4.

[0056] like Figure 6-Figure 8 As shown, the pawl 3 and the return member 9 are coaxially installed on the rivet column 4, the pawl 3 has a hanging portion 33, the return member 9 is sleeved on the rivet column 4, one end of the return member 9 is fixed to the rivet column 4 or the rebound member 6, and the other end of the return member 9 abuts against the hanging portion 33, so that the pawl 3 always has a tendency to rotate in the forward direction.

[0057] The return member 9 of this embodiment may be a torsion spring, or an elastic member such as a coil spring, as long as it can provide a restoring force for the pawl 3 to rotate in the positive direction.

[0058] like Figure 8 As shown, the rivet post 4 has a stepped shaft structure, specifically including a first stepped shaft, a second stepped shaft and a third stepped shaft with gradually decreasing shaft diameters and connected in sequence. A collar 71 is fixedly mounted on the end of the cable 7, and the collar 71 is sleeved on the second stepped shaft of the rivet post 4, and one end of the ratchet spring 8 is located below the first stepped shaft and abuts against the first stepped shaft, so that the rivet post 4 can support the ratchet 5. The pawl 3 is sleeved on the second stepped shaft, and the return member 9 is sleeved on the first stepped shaft.

[0059] Continue as Figure 6-Figure 8 As shown, the pawl assembly also includes a resilient member 6, which includes a connected connecting plate 61 and a supporting plate 62. One end of the connecting plate 61 is rotatably disposed on the base plate 1, and the other end of the connecting plate 61 is sleeved on the rivet column 4. The supporting plate 62 is used to support the ratchet 5.

[0060] Specifically, the connecting plate 61 and the supporting plate 62 are integrally bent and formed, wherein the connecting plate 61 is gourd-shaped, one end of the connecting plate 61 is coaxially mounted with the ratchet 5 and the guide plate 2, and the other end is sleeved on the third step shaft of the rivet column 4, so that the pawl 3 can rotate coaxially with the ratchet 5 under the drive of the driving mechanism. The supporting plate 62 is vertically connected to the connecting plate 61, and the supporting plate 62 can fit the outer edge of the ratchet 5, which is conducive to the rebound member 6 to stably support the ratchet 5.

[0061] like Fig. 9 and Fig.10 As shown, the guide plate 2 has a first outer edge 21 and a second outer edge 22 connected to each other, and the second outer edge 22 is recessed inward to form an avoidance groove for giving way to the pawl 3, so that after the pawl 3 reaches the semi-locked position, the pawl 3 can rotate positively around the rivet column 4 under the action of the return member 9, thereby coupling the pawl 3 and the ratchet 5 together.

[0062] like Fig.10 As shown, the pawl 3 includes a first plate and a second plate connected at an angle. A clamping portion 32 extends vertically from the end of the first plate, a flange 31 is provided on the side of the first plate close to the guide plate 2, a hanging portion 33 is vertically arranged on the second plate, one end of the return member 9 is fixedly arranged on the rivet column 4 or the rebound member 6, and the other end is pressed against the hanging portion 33, so that the pawl 3 has a tendency to rotate in the positive direction.

[0063] When the ratchet wheel 5 is located between the unlocking position and the half-locking position, the flange 31 slidably presses against the first outer edge 21 to prevent the pawl 3 from rotating in the forward direction.

[0064] Specifically, the ratchet 5 has a limiting groove 53, and when the pawl 3 rotates forward around the rivet column 4, the clamping portion 32 is clamped and connected with the limiting groove 53. When the pawl 3 reaches the semi-locked position, the pawl 3 is disengaged from the guide plate 2 due to the avoidance groove of the guide plate 2, and rotates forward. The clamping connection between the clamping portion 32 and the limiting groove 53 realizes the stable coupling between the ratchet 5 and the pawl 3.

[0065] The lock device further includes a first switch (not shown) disposed on the substrate 1, and the ratchet 5 further includes a pressing portion 52. The first switch is electrically connected to the drive mechanism. When the ratchet 5 is in the unlocking position, the pressing portion 52 presses against the first switch. When the ratchet 5 leaves the unlocking position, the pressing portion 52 is released from pressing against the first switch to trigger the drive mechanism.

[0066] like Fig.11 As shown, the ratchet 5 is an irregular plate-like structure, which is roughly triangular. The outer edge of the ratchet 5 has a pressing portion 52, a hook 51, a locking groove 511 and a limiting groove 53 in its circumferential direction. The pressing portion 52 protrudes from the outer edge of the ratchet 5 so as to press the first switch. The outer edge of the ratchet 5 is recessed inward to form a locking groove 511, and the locking groove 511 separates part of the ratchet 5 to form a hook 51 and a connecting arm 54. The outer edge below the connecting arm 54 is recessed inward to form a limiting groove 53 adapted to the clamping portion 32 of the pawl 3, so as to facilitate the coupling connection between the ratchet 5 and the pawl 3.

[0067] It should be noted that a second switch (not shown) is also installed on the base plate 1. When the second switch is triggered, it can feed back a signal to the vehicle control unit, which prompts the driver or user that the hatch has been fully locked. When the ratchet 5 rotates to the fully locked position, the second switch is triggered, and the vehicle control unit controls the motor to turn off, so that the lock device remains locked.

[0068] The working process of the lock device of this embodiment includes a locking process and an unlocking process. For ease of understanding, the specific locking process of the lock device is as follows:

[0069] When the car hood is opened, Figure 1 and Figure 2 As shown, the ratchet 5 and the pawl 3 are both in the unlocked position, and the pressing portion 52 of the ratchet 5 presses against the first switch, and the motor of the driving mechanism is in the off state. Under the action of the restoring force of the ratchet spring 8, the rivet column 4 supports the connecting arm 54 of the ratchet 5 through the resilient member 6, and the lock buckle 10 is located at the notch position of the locking groove 511 and presses above the connecting arm 54.

[0070] The automobile control unit is used to open the motor or slightly press the automobile hood, so that the ratchet 5 rotates forwardly under the pressure of the lock buckle 10, and the pressing portion 52 is disengaged from the first switch, thereby triggering the motor of the drive mechanism. The motor pulls the rivet column 4 through the cable 7 to make the pawl 3 rotate forwardly relative to the base plate 1, and the rebound member 6 is disengaged from the connecting arm 54. The flange 31 of the pawl 3 engages with the first outer edge 21 of the guide plate 2, and the ratchet 5 rotates forwardly to the semi-locked position under the pressure of the lock buckle 10.

[0071] like Figure 3 As shown, when the pawl 3 and the ratchet 5 reach the semi-locked position, the pawl 3 is disengaged from the guide plate 2 due to the avoidance groove on the second outer edge 22 of the guide plate 2, and rotates forward around the rivet column 4, and the coupling of the ratchet 5 and the pawl 3 is achieved through the clamping connection between the clamping portion 32 of the pawl 3 and the limiting groove 53 of the ratchet 5. At this time, the driving mechanism continues to drive the pawl 3 to rotate forward, and the ratchet 5 rotates to the fully locked position under the drive of the pawl 3. At the same time, the lock buckle 10 slides into the locking groove 511, so that the lock buckle 10 and the locking groove 511 of the ratchet 5 are locked and matched, and the lock buckle 10 drives the hatch to close on the engine compartment or the luggage compartment, completing the automatic locking of the lock device.

[0072] It should be noted that when the ratchet wheel 5 reaches the fully locked position, the second switch feeds back a signal to the vehicle control unit, which reminds the driver or user that the hatch has been fully locked. At this time, the motor of the drive mechanism is turned off and the lock device remains in the closed state.

[0073] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A locking device, characterized in that: include: substrate(1); A guide plate (2), the guide plate (2) being arranged on the base plate (1); A pawl assembly, the pawl assembly comprising a pawl (3), a return member (9) and a rivet post (4), the rivet post (4) being rotatably arranged on the base plate (1), and the pawl (3) being rotatably arranged on the rivet post (4) via the return member (9); A ratchet (5), wherein the ratchet (5) is rotatably disposed on the base plate (1), and the guide plate (2) and the ratchet (5) are coaxially disposed on the base plate (1); the ratchet (5) comprises a locking groove (511) that cooperates with a lock buckle (10) of a car hood, and the ratchet (5) has an unlocking position, a semi-locking position and a fully locked position in sequence in a forward rotation direction; when the ratchet (5) is located at the unlocking position, the pawl (3) is engaged with the guide plate (2), and the lock buckle (10) is pressed against the locking groove (511), so that the ratchet (5) is supported on the rivet post (4). A driving mechanism, wherein the output end of the driving mechanism is connected to the rivet column (4) and is configured to be able to drive the pawl (3) to rotate in a positive direction through the rivet column (4) when triggered, so that the ratchet (5) rotates in a positive direction from the unlocked position to the semi-locked position; the pawl (3) is disengaged from the guide plate (2) at the semi-locked position, and the pawl (3) rotates around the rivet column (4) and couples with the ratchet (5) to drive the ratchet (5) to rotate synchronously to the fully locked position, thereby locking the locking groove (511) and the lock buckle (10) in a locked fit.

2. The lock device according to claim 1, characterized in that: The lock device further comprises a ratchet spring (8), one end of the ratchet spring (8) being fixedly arranged on the base plate (1), and the other end of the ratchet spring (8) being located below the rivet post (4) and abutting against the rivet post (4), so that the ratchet (5) has a tendency to rotate in the opposite direction.

3. The lock device according to claim 2, characterized in that: The pawl assembly further comprises a resilient member (6), the resilient member (6) comprising a connecting plate (61) and a supporting plate (62) connected to each other, one end of the connecting plate (61) being rotatably disposed on the base plate (1), the other end of the connecting plate (61) being sleeved on the rivet column (4), and the supporting plate (62) being used for supporting the ratchet (5).

4. The lock device according to claim 1, characterized in that: The lock device further comprises a first switch arranged on the substrate (1); the ratchet (5) further comprises a pressing portion (52); the first switch is electrically connected to the drive mechanism; when the ratchet (5) is located at the unlocking position, the pressing portion (52) presses against the first switch to close the drive mechanism; when the ratchet (5) leaves the unlocking position, the pressing portion (52) is released from pressing against the first switch to trigger the drive mechanism.

5. The lock device according to claim 1, characterized in that: The guide plate (2) has a first outer edge (21), and the pawl (3) has a flange (31). When the ratchet (5) is located between the unlocking position and the semi-locking position, the flange (31) is slidably pressed against the first outer edge (21).

6. The lock device according to claim 5, characterized in that: The guide plate (2) further comprises a second outer edge (22) connected to the first outer edge (21), the second outer edge (22) being recessed inwardly to form a relief groove for making way for the ratchet pawl (3).

7. The lock device according to claim 1, characterized in that: The pawl (3) has a clamping portion (32), and the ratchet (5) has a limiting groove (53). When the pawl (3) rotates around the rivet column (4), the clamping portion (32) is clamped and connected with the limiting groove (53).

8. The lock device according to claim 7, characterized in that: The pawl (3) has a hanging portion (33), the return member (9) is sleeved on the rivet column (4), one end of the return member (9) is fixedly arranged on the rivet column (4), and the other end of the return member (9) abuts against the hanging portion (33), so that the pawl (3) has a tendency to rotate in the forward direction.

9. The lock device according to claim 1, characterized in that: The base plate (1) is provided with a slide groove (11), and the lock buckle (10) is slidably arranged in the slide groove (11).

10. An automobile, characterized in that: The invention comprises the lock device according to any one of claims 1 to 9.

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