Lock system and motor vehicle

Abstract

The utility model provides a lock system and a motor vehicle. The lock system comprises a spring bolt component, a pawl component and a first reset component. The spring bolt part is arranged to rotate along a first axis and at least comprises a full locking position and an opening position; the pawl component is arranged to rotate along a second axis and at least comprises a first position and a second position, and when the pawl component is located at the first position, the pawl component is used for limiting the spring bolt component at the full-locking position; when the pawl component is located at the second position, the spring bolt component is allowed to move from the full-locking position to the opening position; the first reset component is used for providing reset force for the pawl component, so that the pawl component has the movement tendency of moving from the first position to the second position through the reset force.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a lock system and a motor vehicle. BACKGROUND

[0002] To realize the locking of the side door of a motor vehicle, a plurality of lock systems are provided on a general motor vehicle.

[0003] The lock system in the prior art generally comprises a lock tongue and a pawl, and a return spring is installed on the pawl. The return force of the return spring can make the pawl rotate towards the direction of locking the lock tongue. When opening, this kind of lock system needs to drive the pawl to rotate towards the direction of opening the lock tongue, and correspondingly needs to keep the pawl in the opening position. Otherwise, when the lock tongue rotates from the full lock position to the half lock position, the pawl can rotate towards the direction of locking the lock tongue, and can cause the lock tongue to be erroneously limited in the half lock position. Even if the rotating angle of the pawl is small, it can also make the lock tongue touch the pawl during the rotating process, thereby generating noise. SUMMARY

[0004] The present disclosure provides a lock system and a motor vehicle.

[0005] According to one aspect of the present disclosure, a lock system is provided, comprising:

[0006] a lock tongue component configured to rotate along a first axis and comprising at least a full lock position and an opening position;

[0007] a pawl component configured to rotate along a second axis and comprising at least a first position and a second position, wherein the pawl component is configured to limit the lock tongue component in the full lock position when the pawl component is in the first position, and the pawl component is configured to allow the lock tongue component to move from the full lock position to the opening position when the pawl component is in the second position; and

[0008] a first return component configured to provide a return force to the pawl component, so that the pawl component has a movement tendency from the first position to the second position by the return force.

[0009] The lock system according to at least one embodiment of the present disclosure further comprises:

[0010] a lock dead lever configured to rotate along a third axis, wherein the lock dead lever is configured to limit the pawl component in the first position.

[0011] The lock system according to at least one embodiment of the present disclosure, the lock dead lever comprises a lock dead position, when the lock dead lever is in the lock dead position, the lock dead lever limits the pawl component in the first position.

[0012] According to the lock system of at least one embodiment of the present disclosure, the lock bar comprises a locking surface, when the lock bar is in the locked position, the pawl component is in contact with the locking surface, and the lock bar limits the pawl component in the first position.

[0013] According to the lock system of at least one embodiment of the present disclosure, the lock bar comprises an unlocking position, when the lock bar is in the unlocking position, the first reset component drives the pawl component to move from the first position to the second position, wherein the lock bar is further used to limit the pawl component in the second position.

[0014] According to the lock system of at least one embodiment of the present disclosure, the lock bar further comprises a driving surface, when the lock bar is in the unlocking position, the pawl component is in contact with the driving surface of the lock bar, so that the pawl component is limited in the second position.

[0015] According to the lock system of at least one embodiment of the present disclosure, when the pawl component is in the second position, the contact position of the pawl component with the driving surface of the lock bar is located on the side close to the first axis of the plane formed by the second axis and the third axis.

[0016] According to the lock system of at least one embodiment of the present disclosure, further comprising an unlocking lever, the lock bar is rotatably arranged on the unlocking lever, wherein the unlocking lever is at least used to drive the lock bar to move to the unlocking position.

[0017] According to the lock system of at least one embodiment of the present disclosure, the unlocking lever comprises a limiting component, the limiting component is used to limit the lock bar in the first limiting position, wherein the first limiting position is the locked position of the lock bar when the lock system is in the full lock state.

[0018] According to the lock system of at least one embodiment of the present disclosure, further comprising:

[0019] A second reset component, the second reset component is used to provide a driving force to the lock bar, so that the lock bar has a movement tendency to move to the first limiting position.

[0020] According to the lock system of at least one embodiment of the present disclosure, the unlocking lever and the lock bar have the same rotation axis.

[0021] According to the lock system of at least one embodiment of the present disclosure, the pawl component can be driven by the lock bar and / or the unlocking lever to move from the second position to the first position.

[0022] According to the lock system of at least one embodiment of the present disclosure, the pawl component includes a force receiving surface formed as an outwardly convex arc surface; the unlocking lever includes a force applying surface formed as a convex component; when the unlocking lever has a tendency to move clockwise, the force applying surface is capable of applying a pushing force to the force receiving surface and causing the pawl component to rotate clockwise.

[0023] According to the lock system of at least one embodiment of the present disclosure, the latch component includes a driving surface for cooperating with the dead lever to drive the dead lever to rotate when the latch component moves from the open position to the fully locked position.

[0024] According to the lock system of at least one embodiment of the present disclosure, the driving surface of the latch component is provided with a groove, and the dead lever includes an extension portion, when the extension portion enters the groove from the driving surface, the dead lever is capable of moving from the unlocked position to the dead position; when the extension portion exits from the groove, the dead lever is capable of moving from the dead position to the unlocked position.

[0025] According to the lock system of at least one embodiment of the present disclosure, the latch component further includes a half-locked position, when the extension portion of the dead lever is located in the groove of the latch component, the pawl component is used to limit the latch component to the half-locked position.

[0026] According to another aspect of the present disclosure, a motor vehicle is provided, which includes the above-mentioned lock system. BRIEF DESCRIPTION OF DRAWINGS

[0027] The accompanying drawings, which are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure.

[0028] Figure 1 is a structural schematic view of the lock system according to one embodiment of the present disclosure (open state).

[0029] Figure 2 is Figure 1 is a structural schematic view of another angle of

[0030] Figure 3 is a structural schematic view of the lock system according to one embodiment of the present disclosure (half-locked state).

[0031] Figure 4 is Figure 3 is a structural schematic view of another angle of

[0032] Figure 5 is a structural schematic view of the lock system according to one embodiment of the present disclosure (fully locked state).

[0033] Figure 6 is another angle of the structural diagram of Figure 5

[0034] Figure 7 and Figure 8 are different angle structural diagrams of the pawl component according to one embodiment of the present disclosure.

[0035] Figure 9 is a structural diagram of the lock tongue component according to one embodiment of the present disclosure.

[0036] Figure 10 is a structural diagram of the lock dead bar according to one embodiment of the present disclosure.

[0037] Figure 11 is a structural diagram of the lock system according to one embodiment of the present disclosure (open state).

[0038] Figure 12 is another angle of the structural diagram of Figure 11

[0039] The reference signs in the drawings are specifically as follows:

[0040] 100 lock tongue component

[0041] 110 driving surface

[0042] 120 recess

[0043] 200 pawl component

[0044] 210 force receiving surface

[0045] 300 lock dead bar

[0046] 310 locking surface

[0047] 320 driving surface

[0048] 330 extension

[0049] 400 unlocking bar

[0050] 410 limiting component

[0051] 420 force applying surface

[0052] 500 first reset component

[0053] 600 second reset component. DETAILED DESCRIPTION

[0054] ​​The present disclosure will be described in further detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are merely exemplary and are not limiting to the present disclosure. In addition, it should also be understood that for the convenience and clarity of the description, only parts of the relevant are shown in the drawings.

[0055] It should be noted that the embodiments and features of the present disclosure can be combined if there is no conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0056] Unless otherwise specified, the exemplary embodiments / examples shown will be understood as providing exemplary features of various details that can implement the technical concepts of the present disclosure in practice. Therefore, unless otherwise specified, the features of various embodiments / examples can be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of the present disclosure.

[0057] In the drawings, cross-hatching and / or shading are generally used to indicate that a portion of one component is positioned above another component. As such, unless otherwise specified, the presence of cross-hatching or shading is not a requirement of the present disclosure. In addition, for clarity and / or descriptive purposes, the sizes of components shown in the drawings can be exaggerated relative to other components. When the exemplary embodiments can be carried out in different ways, a specific process sequence can be performed in a different order from the described order. For example, two consecutively described processes can be performed substantially simultaneously or in the reverse order from the described order. In addition, the same reference numerals denote the same components.

[0058] When a component is referred to as being "on" or "above" another component, "connected to" or "coupled to" another component, it can be directly on, directly connected to, or directly coupled to the other component, or there can be intervening components. However, when a component is referred to as being "directly on", "directly connected to", or "directly coupled to" another component, there are no intervening components. For this reason, the term "connected" can refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0059] For descriptive purposes, this disclosure may use spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” and “side (e.g., in a “sidewall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatial relative terms are also intended to encompass different orientations of the device during use, operation, and / or manufacture. For example, if the device in the drawings is flipped, a component described as “below” or “under” another component or feature would subsequently be positioned “above” said other component or feature. Thus, the exemplary term “below” can encompass both “above” and “below” orientations. Furthermore, the device may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatial relative descriptive terms used herein accordingly.

[0060] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0061] Figure 1 This is a schematic diagram of a lock system according to one embodiment of the present disclosure (open state). Figure 2 yes Figure 1 A structural diagram from another angle. Figure 3 This is a schematic diagram of a locking system (in a half-locked state) according to one embodiment of the present disclosure. Figure 4 yes Figure 3 A structural diagram from another angle. Figure 5 This is a schematic diagram of a locking system according to one embodiment of the present disclosure (fully locked state). Figure 6 yes Figure 5 A structural diagram from another angle.

[0062] like Figures 1 to 6 As shown, the locking system disclosed herein may include components such as a bolt component 100, a pawl component 200, a locking lever 300, and an unlocking lever 400.

[0063] Although Figures 1 to 6 Although not shown, it is understood by those skilled in the art that the lock system of the present disclosure can include a lock body, and the lock bolt member 100, the pawl member 200, the locking rod 300 and the unlocking rod 400 are rotatably arranged in the lock body. In addition, the lock system of the present disclosure can be a side door lock, a machine cover lock or a trunk lock, that is, the present disclosure does not limit the arrangement position of the lock system.

[0064] The lock bolt member 100 of the present disclosure is arranged to rotate along a first axis and includes at least a full lock position and an open position; specifically, the lock bolt member 100 of the present disclosure can include a full lock position, a half lock position and an open position. In the direction shown, when the lock bolt member 100 rotates clockwise, it can move from the open position to the half lock position or the full lock position in sequence. Figure 1 In the direction shown, when the lock bolt member 100 rotates counterclockwise, it can move from the full lock position to the half lock position or the open position in sequence. Figure 5 In the direction shown, when the lock bolt member 100 rotates counterclockwise, it can move from the full lock position to the half lock position or the open position in sequence.

[0065] In addition, the clockwise rotation and counterclockwise rotation of the lock bolt member 100 can be driven by a motor or by the restoring force of a torsional spring. Since this technical feature is a common feature in the prior art, it will not be described again in the present disclosure.

[0066] Correspondingly, when the lock bolt member 100 is in the open position, the lock system is in Figure 1 the open state shown. When the lock bolt member 100 is in the half lock position, the lock system is in Figure 3 the half lock state shown. When the lock bolt member 100 is in the full lock position, the lock system is in Figure 3 the full lock state shown.

[0067] The pawl member 200 is arranged to rotate along a second axis and includes at least a first position and a second position, wherein when the pawl member 200 is in the first position, the pawl member 200 is used to limit the lock bolt member 100 in the full lock position or the half lock position; when the pawl member 200 is in the second position, the lock bolt member 100 is allowed to move from the full lock position to the open position.

[0068] wherein, Figure 1 The pawl member 200 shown in the above figure is in the second position. Correspondingly, when the pawl member 200 rotates clockwise, it can move from the second position to the first position. Figure 3 and Figure 5 The pawl member 200 shown in the above figure is in the first position. Correspondingly, when the pawl member 200 rotates counterclockwise, it can move from the first position to the second position.

[0069] Figure 7 andFigure 8 is a structural schematic view of different angles of the pawl member according to an embodiment of the present disclosure.

[0070] As shown in Figure 7 and Figure 8 , the lock system of the present disclosure further comprises a first reset member 500 for providing a reset force to the pawl member 200 so that the pawl member 200 has a movement tendency from the first position to the second position by the reset force. In a preferred embodiment, the first reset member 500 can be a torsion spring. Moreover, in the direction shown in Figure 3 and Figure 5 , the pawl member 200 has a movement tendency away from the latch member 100 by the reset force provided by the torsion spring.

[0071] The lock dead bar 300 of the present disclosure is arranged to rotate along a third axis, wherein the lock dead bar 300 is at least used to limit the pawl member 200 in the first position. Specifically, the lock dead bar 300 of the present disclosure comprises a lock position and an unlock position, as shown in Figure 1 , the lock dead bar 300 is in the unlock position. As shown in Figure 3 and Figure 5 , the lock dead bar 300 is in the lock position. That is, in the direction shown in Figure 1 , when the lock dead bar 300 rotates clockwise, it will move from the unlock position to the lock position, and when the lock dead bar 300 moves from the unlock position to the lock position, it can push the pawl member 200 to move so that the pawl member 200 moves from the second position to the first position. Conversely, in the direction shown in Figure 3 and Figure 5 , when the lock dead bar 300 rotates counterclockwise, it will move from the lock position to the unlock position, at this time, since the pawl member 200 is out of the control of the lock dead bar 300, it will move from the first position to the second position under the reset force of the first reset member 500.

[0072] In the structure of the lock system of the present disclosure, the pawl member 200 can be in contact with the lock dead bar 300 at all times, so that the pawl member 200 can be driven to move by the lock dead bar 300. In another implementation form, the pawl member 200 can also be out of contact with the lock dead bar 300, at this time, the pawl member 200 can be driven to move from the second position to the first position by the unlocking bar 400.

[0073] When the lock dead bar 300 is in the lock position, the lock dead bar 300 limits the pawl member 200 in the first position; correspondingly, the lock dead bar 300 comprises a locking surface 310, when the lock dead bar 300 is in the lock position, the pawl member 200 is in contact with the locking surface 310, and the lock dead bar 300 limits the pawl member 200 in the first position.

[0074] When the dead bar 300 is in the unlocking position, the first reset component 500 drives the pawl component 200 to move from the first position to the second position, wherein the dead bar 300 is also used to limit the pawl component 200 in the second position. At this time, the dead bar 300 also includes a driving surface 320, when the dead bar 300 is in the unlocking position, the pawl component 200 is in contact with the driving surface 320 of the dead bar 300, so that the pawl component 200 is limited in the second position. That is, in the unlocking process of the lock system of the present disclosure, the pawl component 200 can push the dead bar 300 to rotate during the movement from the first position to the second position. Specifically, in the state and direction shown, the dead bar 300 will be first driven by the unlocking lever 400 to move counterclockwise by a certain angle, at this time the pawl component 200 is released by the dead bar 300, and the pawl component 200 will be able to move from the first position to the second position; during the movement of the pawl component 200 from the first position to the second position, one corner of the pawl component 200 will be in contact with the driving surface 320 of the dead bar 300, and can push the dead bar 300 to further rotate counterclockwise. In addition, due to the structure and position of the pawl component 200 and the dead bar 300, finally, the pawl component 200 and the dead bar 300 are in the position shown, at this position, the pawl component 200 can be in pressure contact with the dead bar 300, and at this time, the dead bar 300 limits the pawl component 200 in the second position. Figure 5 Figure 1

[0075] More specifically, as shown in Figure 1 When the pawl component 200 is in the second position, the contact position of the pawl component 200 with the driving surface 320 of the dead bar 300 is located on the side of the plane formed by the second axis and the third axis close to the first axis, so that when the dead bar 300 rotates clockwise, it can push the pawl component 200 to move clockwise synchronously.

[0076] As shown in Figures 1 to 6 The dead bar 300 of the present disclosure is rotatably arranged in the unlocking lever 400, wherein the unlocking lever 400 is used to drive the dead bar 300 to move to the unlocking position. Specifically, the unlocking lever 400 of the present disclosure includes a limiting component 410, which is used to limit the dead bar 300 in the first limiting position, wherein when the latch component 100 is in the full locking position (i.e. when the lock system is in the full locking state), the first limiting position is the dead position of the dead bar 300, that is, the dead bar 300 is both in the first limiting position and in the dead position.

[0077] ​​The lock system of the present disclosure can further comprise a second return component 600 for providing a driving force to the dead bolt 300 so that the dead bolt 300 has a tendency to move towards the first limit position. That is, in the free state, the dead bolt 300 will be restricted by the unlocking lever 400 at the first limit position and be kept at the first limit position by the return force of the second return component 600.

[0078] In a preferred embodiment, the unlocking lever 400 and the dead bolt 300 have the same rotation axis. As such, the lock system of the present disclosure has fewer pivoting axes and the structure is correspondingly simpler. Alternatively, the unlocking lever 400 and the dead bolt 300 can have different rotation axes, i.e. the unlocking lever 400 is rotatably arranged at the lock body and the dead bolt 300 is rotatably arranged at the unlocking lever 400.

[0079] Figure 9 is a structural schematic diagram of the latch component according to an embodiment of the present disclosure.

[0080] As shown in Figure 9 , the latch component 100 of the present disclosure comprises a driving surface 110, which is capable of cooperating with the dead bolt 300 to drive the dead bolt 300 to rotate when the latch component 100 moves from the open position to the fully locked position. Specifically, the dead bolt 300 will be able to abut against the driving surface 110 when the latch component 100 moves from the open position to the fully locked position, i.e. the dead bolt 300 is in pressure contact with the driving surface 110, and the dead bolt 300 will be able to rotate clockwise or counterclockwise at any time when the latch component 100 is at different positions, i.e. the driving surface 110 is capable of driving the dead bolt 300 to rotate.

[0081] In other words, the lock system of the present disclosure drives the latch component 100 to rotate when locking, so that the latch component 100 moves from the open position to the fully locked position.

[0082] When the lock system is unlocked, the unlocking lever 400 will be returned, i.e. the unlocking lever 400 will rotate counterclockwise from the position shown in Figure 1 to the position shown in Figure 11 .

[0083] As shown in Figure 11 , when the latch component 100 just leaves the open position, the pawl component 200 is unable to rotate due to being restricted by the latch component 100, and correspondingly, the dead bolt 300 is also unable to rotate.

[0084] The dead bolt 300 comprises an extension 330, which will be in contact with the driving surface 110 when the latch component 100 leaves the open position, at which time the dead bolt 300 is restricted at the unlocking position and is unable to rotate.

[0085] When the latch component 100 rotates further counterclockwise, the extension 330 of the locking lever 300 can be located in the groove. At this time, the locking lever 300 can move clockwise under the reset force of the second reset component 600. In addition, since the upper end of the pawl component 200 corresponds to the opening position of the latch component 100, the pawl component 200 can also rotate clockwise. At this time, under the elastic force of the second reset component 600, the locking lever 300 can move from the unlocked position to the locked position. At the same time, the locking lever 300 also drives the pawl component 200 to move from the second position to the first position. Correspondingly, the pawl component 200 keeps the latch component 100 in the half-locked position.

[0086] Furthermore, as the latch component 100 continues to rotate counterclockwise, the extension 330 will disengage from the groove 120. Correspondingly, the latch component 100 will drive the locking lever 300 to move from the locked position to the unlocked position. Then, under the action of the reset force of the first reset component 500, the pawl component 200 will move from the first position to the second position.

[0087] When the latch component 100 continues to rotate counterclockwise, the extension 330 will separate from the drive surface 110. At this time, the locking lever 300 can move clockwise under the reset force of the second reset component 600. In addition, since the upper end of the pawl component 200 corresponds to the notch below the opening of the latch component 100, the pawl component 200 can also rotate clockwise. At this time, under the elastic force of the second reset component 600, the locking lever 300 can move from the unlocked position to the locked position. At the same time, the locking lever 300 also drives the pawl component 200 to move from the second position to the first position. Accordingly, the pawl component 200 keeps the latch component 100 in the fully locked position.

[0088] Thus, the locking operation of the lock system disclosed herein is achieved. Furthermore, when the lock system of this disclosure is to be unlocked, it can be achieved by driving the unlocking lever 400 to rotate counterclockwise (to... Figure 3 and Figure 5 (Direction). Figure 5 For example, when the unlocking lever 400 is driven to rotate counterclockwise, it will simultaneously drive the locking lever 300 to rotate counterclockwise. Then the pawl component 200 is released and moves from the first position to the second position. At this time, the bolt component 100 will be allowed to rotate counterclockwise to move from the fully locked position to the open position and unlock the lock system.

[0089] like Figure 11 and Figure 12 As shown, the pawl component 200 of this disclosure can also be driven by the unlocking lever 400 to move toward the first position. That is, with Figure 11In the illustrated direction, the unlocking lever 400 will be able to drive the pawl member 200 to rotate clockwise so that the pawl member 200 moves away from the second position and moves toward the first position.

[0090] Specifically, the pawl member 200 can include a force receiving surface 210 which can be formed in an arc shape protruding outward, and the unlocking lever 400 can include a force applying surface 420 which can be formed as a protruding member, and when the unlocking lever 400 has a tendency to move clockwise under the action of a spring or the like, the force applying surface 420 can apply a pushing force to the force receiving surface 210 and cause the pawl member 200 to rotate clockwise.

[0091] That is, the movement of the pawl member 200 from the second position to the first position can be completed by the unlocking lever 400 and the lock lever 300 together, and specifically, the first half of the movement can be completed by the unlocking lever 400, and the second half can be completed by the lock lever 300.

[0092] According to another aspect of the present disclosure, there is provided a motor vehicle including the above-described lock system.

[0093] In the description of the specification, the description of the terms "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments / ways or examples. In addition, the person skilled in the art can combine and combine the different embodiments / ways or examples described in the specification and the features of the different embodiments / ways or examples, without contradiction with each other.

[0094] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0095] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A lock system characterized by, The application comprises: a latch member arranged to rotate along a first axis and comprising at least a fully latched position and an open position; a pawl member arranged to rotate along a second axis and comprising at least a first position and a second position, wherein the pawl member is arranged to restrict the latch member in the fully latched position when the pawl member is in the first position, and to allow the latch member to move from the fully latched position to the open position when the pawl member is in the second position; and a first return member arranged to provide a return force to the pawl member to cause the pawl member to have a tendency to move from the first position to the second position by the return force. The application further comprises:

2. The lock system of claim 1, wherein, a dead bolt arranged to rotate along a third axis, wherein the dead bolt is arranged to restrict the pawl member in the first position. The dead bolt comprises a dead bolt position, wherein the dead bolt restricts the pawl member in the first position when the dead bolt is in the dead bolt position.

3. The lock system of claim 2, wherein, The dead bolt comprises a locking surface, wherein the pawl member is in contact with the locking surface when the dead bolt is in the dead bolt position, and the dead bolt restricts the pawl member in the first position.

4. The lock system of claim 2, wherein, The dead bolt comprises an unlocking position, wherein the first return member drives the pawl member to move from the first position to the second position when the dead bolt is in the unlocking position, and wherein the dead bolt is arranged to restrict the pawl member in the second position.

5. The lock system of claim 2, wherein, The dead bolt further comprises a driving surface, wherein the pawl member is in contact with the driving surface of the dead bolt when the dead bolt is in the unlocking position, and the pawl member is restricted in the second position.

6. The lock system of claim 5, wherein, When the pawl member is in the second position, the contact position of the pawl member with the driving surface of the dead bolt is located on the side of the plane formed by the second axis and the third axis which is close to the first axis.

7. The lock system of claim 6, wherein, The application further comprises an unlocking lever, wherein the dead bolt is rotatably arranged in the unlocking lever, and wherein the unlocking lever is arranged to drive the dead bolt to move to the unlocking position.

8. The lock system of claim 2, wherein, The unlocking lever comprises a limiting member arranged to restrict the dead bolt in a first limiting position, wherein the first limiting position is the dead bolt position of the dead bolt when the lock system is in the fully latched state.

9. The lock system of claim 8, wherein, The application further comprises:

10. The lock system of claim 9, wherein, a second return member arranged to provide a driving force to the dead bolt to cause the dead bolt to have a tendency to move to the first limiting position. The unlocking lever and the dead bolt have the same rotation axis.

11. The lock system of claim 9, wherein, The pawl member can be driven by the dead bolt and / or the unlocking lever to move from the second position to the first position.

12. The lock system of claim 8, wherein, The pawl member comprises a force receiving surface formed as an outwardly convex arc surface, and the unlocking lever comprises a force applying surface formed as a convex member, wherein the force applying surface is arranged to apply a pushing force to the force receiving surface to cause the pawl member to rotate clockwise when the unlocking lever has a tendency to rotate clockwise.

13. The lock system of claim 12, wherein, The latch member comprises a driving surface arranged to cooperate with the dead bolt to drive the dead bolt to rotate when the latch member moves from the open position to the fully latched position.

14. The lock system of claim 2, wherein, ​ 15. The lock system of claim 14, wherein, The drive surface of the bolt member is provided with a recess, the deadlocking lever comprising an extension, the deadlocking lever being movable from an unlocked position to a deadlocking position when the extension enters the recess from the drive surface, and the deadlocking lever being movable from the deadlocking position to the unlocked position when the extension exits the recess.

16. The lock system of claim 15, wherein, The bolt member further comprises a half-locked position, the pawl member being arranged to restrict the bolt member in the half-locked position when the extension of the deadlocking lever is located in the recess of the bolt member.

17. A motor vehicle, characterised in that A lock system comprising the bolt system of any one of claims 1-16.

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