Door locks and vehicles

Abstract

The present invention belongs to the technical field of vehicles and discloses a door lock and a vehicle. The door lock includes a ratchet and a lock catch. The ratchet is rotatably connected to a first rotating shaft, and a capture groove is arranged on the ratchet. The ratchet can rotate from a first working position to a second working position around the first rotating shaft. When the ratchet is in the second working position, the lock catch can be moved out of the capture groove. The present invention arranges a rolling block between the pawl and the ratchet, so that the rolling friction produces an obstructive effect on the pawl in the process of releasing the ratchet. The friction torque produced by the rolling friction on the pawl is small, so that the release force used to rotate the pawl from the third working position to the fourth working position is small. When the release force is applied to the pawl manually, since the required release force is small, it is more labor-saving to open the door manually. When the release force is applied to the pawl by actuator driving, since the required release force is small, the actuator only needs to use a low-power drive component.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a door lock and a vehicle. Background Art

[0002] The door lock of a vehicle is generally unlocked and locked by a ratchet and pawl structure arranged on the door and a lock catch arranged on the vehicle body. The ratchet and pawl structure keeps the door in an open or closed state by controlling the relative position between the ratchet and the pawl.

[0003] Specifically, during the door closing process, the lock catch hits the ratchet wheel, causing the ratchet wheel to rotate and capture the lock catch, and when the door reaches the closed position, the pawl stops the ratchet wheel, restricting the ratchet wheel from rotating, so that the door remains closed. A release mechanism that can be used to unlock the door lock is connected to the pawl, so that the ratchet wheel is released by actuating the pawl, and the ratchet wheel can rotate to unlock the door lock.

[0004] In the prior art, when the vehicle door is in a closed state, the pawl abuts against the ratchet, and the pawl can rotate and release the ratchet, thereby realizing the conversion of the vehicle door from a closed state to an open state. However, in the prior art, during the process of the pawl rotating to release the ratchet, sliding friction will be generated between the pawl and the ratchet. The sliding friction will generate a large friction torque on the rotating shaft of the pawl, resulting in the need to apply a large release force to the pawl in order to rotate the pawl. In the prior art, the release force is generally applied to the pawl manually or by actuator drive, which makes it more difficult to open the door manually or the actuator used to actuate the pawl needs to use a high-power drive component.

[0005] Therefore, the above problems need to be solved urgently. Summary of the invention

[0006] The object of the present invention is to provide a vehicle door lock and a vehicle to solve the problem that manual door opening is laborious or an actuator for actuating a ratchet needs to adopt a driving member with relatively high power.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In one aspect, the present invention provides a vehicle door lock, comprising a ratchet and a lock catch, wherein the ratchet is rotatably connected to a first rotating shaft, a capture groove is provided on the ratchet, the ratchet can rotate around the first rotating shaft from a first working position to a second working position, and when the ratchet is located at the second working position, the lock catch can be moved out of the capture groove, and the vehicle door lock further comprises:

[0009] The pawl is a mounting frame and a pawl, wherein the mounting frame is provided with a second rotating shaft and a third rotating shaft, the axes of the second rotating shaft and the third rotating shaft are both parallel to the axis of the first rotating shaft, the second rotating shaft is located on a side of the third rotating shaft away from the ratchet wheel, the pawl is rotatably connected to the second rotating shaft and can be rotated from a third working position on a side close to the ratchet wheel to a fourth working position on a side away from the ratchet wheel, the rotation direction of the pawl from the third working position to the fourth working position is the same as the rotation direction of the ratchet wheel from the first working position to the second working position, the pawl is provided with a first arc surface and a second arc surface, the first arc surface is located on the downstream side of the second arc surface along the rotation direction of the pawl from the third working position to the fourth working position, the center of the circle where the first arc surface is located is located on the axis of the second rotating shaft, the circumference where the second arc surface is located is inscribed in the circumference where the first arc surface is located, and the diameter of the circumference where the first arc surface is located is larger than the diameter of the circumference where the second arc surface is located; and

[0010] The cam is configured to move the first and second cams together to form a circle with the first and second cams connected to the chassis, the cam being configured to move the first and second cams together to form a circle with the first and second cams connected to the chassis.

[0011] Preferably, the bracket is provided with a mounting hole, and the bracket is sleeved on the outer periphery of the third rotating shaft through the mounting hole, and there is a gap between the mounting hole and the third rotating shaft in the arrangement direction of the third rotating shaft and the fourth rotating shaft, and the door lock also includes a reset member, and the reset member is configured to move the bracket along the third rotating shaft toward the fourth rotating shaft when the rolling block moves away from the rotation path of the ratchet from the first working position to the second working position.

[0012] Preferably, the door lock also includes a shell, and a first abutment portion and a second abutment portion are respectively provided on the bracket and the shell, and the reset member is a torsion spring, and the torsion spring is sleeved on the outer periphery of the third rotating shaft, and both ends of the torsion spring abut between the first abutment portion and the second abutment portion, and when the rolling block abuts between the ratchet and the pawl, the torsion spring can be elastically deformed so as to have elastic potential energy to move the bracket along the third rotating shaft toward the fourth rotating shaft when the rolling block rotates away from the ratchet from the first working position to the second working position.

[0013] Preferably, the first abutment portion is disposed on the downstream side of the bracket along the rotation direction of the pawl from the third working position to the fourth working position.

[0014] Preferably, the door lock also includes a first spring, which can be elastically deformed when the pawl rotates from the third working position to the fourth working position, so as to have elastic potential energy for resetting the pawl after the bracket moves along the third rotating axis toward the fourth rotating axis.

[0015] Preferably, the door lock also includes a second spring, which can be elastically deformed when the pawl rotates from the third working position to the fourth working position and the ratchet rotates from the first working position to the second working position, so as to have elastic potential energy for resetting the rolling block after the ratchet returns to the first working position from the second working position.

[0016] Preferably, the door lock further comprises a first limit block, which is arranged on a side of the pawl away from the ratchet wheel, and when the pawl is located at the fourth working position, the side of the pawl away from the ratchet wheel abuts against the first limit block.

[0017] Preferably, the vehicle door lock further comprises a second limit block, and when the ratchet wheel rotates from the second working position to the first working position, the ratchet wheel can abut against the second limit block.

[0018] Preferably, the door lock also includes a mounting plate, the ratchet is rotatably connected to the mounting plate via the first rotating shaft, and a channel for movement of the lock catch is provided on the mounting plate, and when the ratchet is located at the first working position, the opening direction of the capture groove is set at an angle to the extension direction of the channel, and when the ratchet is located at the second working position, the opening direction of the capture groove coincides with the extension direction of the channel.

[0019] Another aspect of the present invention provides a vehicle, comprising the door lock as described above.

[0020] Beneficial effects of the present invention: In the present invention, during the process of the pawl rotating counterclockwise from the third working position to the fourth working position, the rolling block rotates clockwise around the fourth rotating shaft, and at the same time, the third arc surface can roll along the first arc surface, and the fourth arc surface can roll along the surface on the ratchet that contacts the rolling block. When the pawl rotates to the fourth working position, the pressure exerted by the ratchet on the rolling block will cause a spacing between the second rotating shaft and the third rotating shaft in the direction in which the second rotating shaft is away from the third rotating shaft, thereby causing the pawl, the rolling block and the bracket to rotate counterclockwise around the third rotating shaft as a whole until the fourth arc surface is offset from the ratchet. During the rotation, the fourth arc surface rolls along the surface on the ratchet that contacts the rolling block, and then the ratchet can rotate to the second working position, thereby realizing the opening of the car door. Based on the above, in the present invention, a rolling block is arranged between the pawl and the ratchet wheel, so that the resistance to the pawl in the process of rotating the pawl to release the ratchet wheel is achieved by rolling friction. The friction torque generated by the rolling friction on the pawl is small, so that the release force used to rotate the pawl from the third working position to the fourth working position is small. When the release force is applied to the pawl manually, the required release force is small, so manual door opening is more labor-saving. When the release force is applied to the pawl by actuator drive, the required release force is small, so the actuator only needs to use a low-power drive component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a door lock when the pawl is in the third working position in an embodiment of the present invention;

[0022] Figure 2 is a schematic structural diagram of a door lock when the pawl is in a fourth working position in an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of a vehicle door lock after the fourth arc surface and the ratchet wheel are staggered in an embodiment of the present invention;

[0024] Figure 4 It is a schematic structural diagram of the mounting frame, the bracket, the rolling block, the reset member and the second abutting portion in an embodiment of the present invention.

[0025] In the figure:

[0026] 1. ratchet; 11. first rotating shaft; 12. capture groove;

[0027] 2. Lock;

[0028] 3. Mounting frame; 31. Second rotating shaft; 32. Third rotating shaft;

[0029] 4. ratchet; 41. first arc surface; 42. second arc surface;

[0030] 5. bracket; 51. mounting hole; 52. first abutting portion;

[0031] 6. rolling block; 61. fourth rotating shaft; 62. third arc surface; 63. fourth arc surface;

[0032] 7. Reset parts;

[0033] 81. second abutting portion;

[0034] 91. A first limiting block; 92. A second limiting block. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be 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 ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] 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.

[0037] 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.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other 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 operate 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.

[0039] This embodiment provides a vehicle, the vehicle includes a door lock and a door, the door lock is used to open or close the door, see Figures 1 to 3 The door lock in this embodiment includes a ratchet 1 and a lock catch 2. The ratchet 1 is rotatably connected to a first rotating shaft 11. A capture groove 12 is provided on the ratchet 1. The ratchet 1 can rotate around the first rotating shaft 11 from a first working position to a second working position. When the ratchet 1 is located at the second working position, the lock catch 2 can be moved out of the capture groove 12 to open the door.

[0040] Please continue reading Figures 1 to 3 , and combined with Figure 4 In addition to the pawl 4 and the ratchet 1, the door lock also includes a mounting frame 3, a pawl 4, a bracket 5 and a rolling block 6. The mounting frame 3 is equipped with a second rotating shaft 31 and a third rotating shaft 32. The axes of the second rotating shaft 31 and the third rotating shaft 32 are parallel to the axis of the first rotating shaft 11. The second rotating shaft 31 is located on the side of the third rotating shaft 32 away from the ratchet 1. The pawl 4 is rotatably connected to the second rotating shaft 31 and can be rotated from the third working position on the side close to the ratchet 1 to the fourth working position on the side away from the ratchet 1. The rotation direction of the pawl 4 from the third working position to the fourth working position is the same as the rotation direction of the ratchet 1 from the first working position to the second working position. The pawl 4 is provided with a first arc surface 41 and a second arc surface 42. The first arc surface 41 is located on the downstream side of the second arc surface 42 along the rotation direction of the pawl 4 from the third working position to the fourth working position. The center of the circle where the first arc surface 41 is located is located on the axis of the second rotating shaft 31, and the circumference where the second arc surface 42 is located is parallel to the first arc surface The circumference where the surface 41 is located is inscribed, and the diameter of the circumference where the first arc surface 41 is located is greater than the diameter of the circumference where the second arc surface 42 is located. The bracket 5 is rotatably connected to the third rotating shaft 32, and the rolling block 6 is rotatably connected to the side of the bracket 5 away from the third rotating shaft 32 through the fourth rotating shaft 61. The axis of the fourth rotating shaft 61 is parallel to the axis of the first rotating shaft 11. The third arc surface 62 and the fourth arc surface 63 are relatively arranged on the rolling block 6. The centers of the circumferences where the third arc surface 62 and the fourth arc surface 63 are located are both located on the axis of the fourth rotating shaft 61. The diameter of the circumference where the third arc surface 62 is located is greater than the diameter of the circumference where the fourth arc surface 63 is located. When the pawl 4 is located in the third working position, the rolling block 6 is located on the rotation path of the ratchet 1 rotating from the first working position to the second working position and abuts between the ratchet 1 and the pawl 4, wherein the first arc surface 41 abuts against the third arc surface 62 and is tangent to the third arc surface 62, and the fourth arc surface 63 abuts against the ratchet 1 and is tangent to the surface of the ratchet 1 that contacts the rolling block 6.

[0041] In this embodiment, during the process of the pawl 4 rotating counterclockwise from the third working position to the fourth working position, the rolling block 6 rotates clockwise around the fourth rotation axis 61. At the same time, the third arc surface 62 can roll along the first arc surface 41, and the fourth arc surface 63 can roll along the surface of the ratchet 1 that contacts the rolling block 6. When the pawl 4 rotates to the fourth working position, the pressure exerted by the ratchet 1 on the rolling block 6 will cause a distance between the second rotation axis 31 and the third rotation axis 32 in the direction in which the second rotation axis 31 is away from the third rotation axis 32, thereby causing the pawl 4, the rolling block 6 and the bracket 5 to rotate counterclockwise around the third rotation axis 32 as a whole until the fourth arc surface 63 is offset from the ratchet 1. During the rotation, the fourth arc surface 63 rolls along the surface of the ratchet 1 that contacts the rolling block 6. After that, the ratchet 1 can rotate to the second working position, thereby realizing the opening of the car door. Based on the above, in this embodiment, a rolling block 6 is set between the pawl 4 and the ratchet 1, so that the hindering effect on the pawl 4 in the process of rotating the pawl 4 to release the ratchet 1 is achieved by rolling friction. The friction torque generated by the rolling friction on the pawl 4 is small, so that the release force used to rotate the pawl 4 from the third working position to the fourth working position is small. When the release force is applied to the pawl 4 manually, the required release force is small, so manual door opening is more labor-saving. When the release force is applied to the pawl 4 by actuator drive, the required release force is small, so the actuator only needs to use a low-power drive component.

[0042] Specifically, a third spring (not shown in the figure) is installed on the ratchet 1. When the car door is closed, the lock catch 2 will hit the groove wall of the capture groove 12, so that the ratchet 1 can rotate clockwise from the second working position to the first working position. In the process of the ratchet 1 rotating from the second working position to the first working position, the third spring is elastically deformed to have elastic potential energy to reset the ratchet 1 from the first working position to the second working position. It can be understood that since the specific installation structure of the third spring and the working principle of the third spring are both existing technologies, they will not be described in detail in this embodiment.

[0043] When the ratchet 1 is in the first working position, the rolling block 6 abuts between the ratchet 1 and the pawl 4. Based on the above, since the third spring has elastic potential energy to reset the ratchet 1 from the first working position to the second working position, the ratchet 1 in the first working position will apply pressure to the rolling block 6. When the pawl 4 is in the third working position and rotates from the third working position to the fourth working position, the first arc surface 41 on the pawl 4 contacts the rolling block 6, that is, the third arc surface 62 is tangent to the first arc surface 41. Since the third arc surface 62 is tangent to the first arc surface 41 and the rolling block 6 is in contact with the pawl 4 and the ratchet 1 The arcs where the contact points are located are the circumferences where the third arc surface 62 and the circumferences where the fourth arc surface 63 are located, respectively. The circumferences where the third arc surface 62 and the circumferences where the fourth arc surface 63 are located are concentric circles, and the center of the circumference where the first arc surface 41 is located is located on the axis of the second rotating shaft 31. Therefore, the pressure applied by the ratchet 1 to the rolling block 6 passes through the axis of the fourth rotating shaft 61 and the axis of the second rotating shaft 31, so that the entire system composed of the ratchet 1, the rolling block 6, the bracket 5 and the ratchet 1 remains stable, and the pawl 4 and the rolling block 6 can remain in contact with the ratchet 1, that is, the ratchet 1 can remain in the first working position.

[0044] When the pawl 4 rotates to the fourth working position, the second arc surface 42 on the pawl 4 contacts the rolling block 6, that is, the third arc surface 62 is tangent to the second arc surface 42. Since the circumference of the second arc surface 42 is inscribed in the circumference of the first arc surface 41 and the diameter of the circumference of the first arc surface 41 is larger than the diameter of the circumference of the second arc surface 42, the pressure applied by the ratchet 1 to the rolling block 6 will be in the direction of the second rotating shaft 31 away from the third rotating shaft 32. There is a distance between the second rotating shaft 31 and the third rotating shaft 32, thereby causing the pawl 4, the rolling block 6 and the bracket 5 to be pushed by the ratchet 1 as a whole and rotate counterclockwise around the third rotating shaft 32. At the same time, the ratchet 1 rotates counterclockwise around the first rotating shaft 11 until the fourth arc surface 63 is offset from the ratchet 1, that is, the rolling block 6 and the pawl 4 release the contact with the ratchet 1, and then the ratchet 1 can be rotated to the second working position, thereby realizing the opening of the car door.

[0045] When the fourth arc surface 63 is offset from the ratchet 1, the ratchet 1 can rotate to the second working position, thereby realizing the opening of the car door. After the fourth arc surface 63 is offset from the ratchet 1, the rolling block 6 and the bracket 5 stop rotating counterclockwise, and the pawl 4 can continue to rotate counterclockwise under the action of the release force, that is, the pawl 4 can rotate the second arc surface 42 to the side of the third arc surface 62 away from the fourth arc surface 63, and the rolling block 6 abuts against the ratchet 1 during the process of the ratchet 1 moving to the second working position.

[0046] When closing the door, the ratchet 1 can rotate clockwise from the second working position to the first working position. To ensure that the door can be effectively closed, the ratchet 1 needs to be able to be kept in the first working position again. Therefore, in the process of the ratchet 1 rotating clockwise from the second working position to the first working position, the pawl 4 and the rolling block 6 need to be able to be reset in sequence. Based on the above, after the fourth arc surface 63 is offset from the ratchet 1, the pawl 4 can rotate the second arc surface 42 to the side of the third arc surface 62 away from the fourth arc surface 63. To ensure that the pawl 4 can be reset to the first arc surface In the third working position, the rolling block 6 needs to be able to avoid the ratchet 4. For this purpose, a mounting hole 51 is provided on the bracket 5 in this embodiment. The bracket 5 is sleeved on the outer periphery of the third rotating shaft 32 through the mounting hole 51. There is a gap between the mounting hole 51 and the third rotating shaft 32 in the arrangement direction of the third rotating shaft 32 and the fourth rotating shaft 61. The door lock also includes a reset member 7. The reset member 7 is configured to move the bracket 5 along the third rotating shaft 32 toward the fourth rotating shaft 61 when the rolling block 6 moves away from the rotation path of the ratchet 1 from the first working position to the second working position. When the rolling block 6 abuts between the ratchet 1 and the pawl 4, since the ratchet 1 will always apply pressure to the rolling block 6, the gap between the mounting hole 51 and the third rotating shaft 32 is always located on the side of the third rotating shaft 32 away from the fourth rotating shaft 61. When the fourth arc surface 63 is offset from the ratchet 1, the bracket 5 moves along the third rotating shaft 32 toward the fourth rotating shaft 61, thereby moving the rolling block 6 away from the pawl 4, and then enabling the pawl 4 to be reset to the third working position without being interfered with by the rolling block 6.

[0047] In order to enable the pawl 4 to be reset to the third working position, the door lock in this embodiment further includes a first spring (not shown in the figure), which can be elastically deformed when the pawl 4 rotates from the third working position to the fourth working position, so as to have elastic potential energy for resetting the pawl 4 after the bracket 5 moves along the third rotating shaft 32 toward the fourth rotating shaft 61, that is, when the ratchet wheel 1 rotates clockwise from the second working position to be offset from the pawl 4, since the bracket 5 has moved to make the rolling block 6 away from the pawl 4, the pawl 4 is restored from the fourth working position to the third working position under the action of the first spring. It can be understood that since the specific installation structure of the first spring and the working principle of the first spring are both existing technologies, they are not described in detail in this embodiment.

[0048] It should be noted that when the pawl 4 is restored to the third working position from the fourth working position, if the ratchet 1 stops rotating toward the first working position at this time, the pawl 4 that has been restored to the third working position can limit the ratchet 1 from rotating toward the second working position. At this time, the vehicle door is in a semi-locked position. If the vehicle door needs to be opened at this time, it is only necessary to apply a release force to the pawl 4 to make the pawl 4 rotate counterclockwise around the second rotating shaft 31 from the third working position.

[0049] Based on the above, the door lock in this embodiment also includes a housing (not shown in the figure), and the bracket 5 and the housing are respectively provided with a first abutting portion 52 and a second abutting portion 81, and the reset member 7 is a torsion spring, which is sleeved on the outer periphery of the third rotating shaft 32, and the two ends of the torsion spring abut between the first abutting portion 52 and the second abutting portion 81. When the rolling block 6 abuts between the ratchet 1 and the pawl 4, the torsion spring can be elastically deformed to have elastic potential energy to move the bracket 5 along the third rotating shaft 32 toward the fourth rotating shaft 61 when the rolling block 6 is away from the ratchet 1 and rotates from the first working position to the second working position. Specifically, when the rolling block 6 abuts between the ratchet 1 and the pawl 4, since the ratchet 1 will always apply pressure to the rolling block 6, the gap between the mounting hole 51 and the third rotating shaft 32 is always located on the side of the third rotating shaft 32 away from the fourth rotating shaft 61, thereby reducing the distance between the first abutting portion 52 and the second abutting portion 81, thereby compressing the torsion spring. When the fourth arc surface 63 is offset from the ratchet 1, the rolling block 6 is not compressed, and the torsion spring resumes its deformation, thereby increasing the distance between the first abutting portion 52 and the second abutting portion 81, so that the bracket 5 moves along the third rotating shaft 32 toward the fourth rotating shaft 61.

[0050] Preferably, the first abutment portion 52 is arranged on the downstream side of the rotation direction of the bracket 5 from the third working position to the fourth working position along the pawl 4. When the fourth arc surface 63 is offset from the ratchet 1, the rolling block 6 is not compressed, the torsion spring recovers its deformation, and the bracket 5 moves along the third rotating shaft 32 toward the fourth rotating shaft 61. In the process of the bracket 5 moving along the third rotating shaft 32 toward the fourth rotating shaft 61, the rolling block 6 will rotate around the fourth rotating shaft 61 in the counterclockwise direction. After the lock buckle 2 hits the groove wall of the capture groove 12 to make the ratchet 1 rotate clockwise from the second working position to the first working position, the ratchet 1 can continue to rotate in the clockwise direction. The torsion spring then continues to recover its deformation, thereby resetting the bracket 5, and allowing the rolling block 6 to move back between the ratchet 1 and the pawl 4. After that, the rolling block 6 can continue to rotate counterclockwise around the fourth rotation axis 61 to reset, and the ratchet 1 is restored to press the rolling block 6 under the action of the third spring, so that the first arc surface 41 abuts against the third arc surface 62 and is tangent to the third arc surface 62, and the fourth arc surface 63 abuts against the ratchet 1 and is tangent to the surface of the ratchet 1 that contacts the rolling block 6, that is, the pawl 4 and the rolling block 6 are restored to keep abutting against the ratchet 1, thereby achieving the closing of the door.

[0051] In order to enable the rolling block 6 that is re-moved between the ratchet 1 and the pawl 4 to rotate counterclockwise around the fourth rotating shaft 61 to reset, the door lock in this embodiment further includes a second spring (not shown in the figure), which can be elastically deformed when the pawl 4 rotates from the third working position to the fourth working position and the ratchet 1 rotates from the first working position to the second working position, so as to have elastic potential energy to reset the rolling block 6 after the ratchet 1 returns to the first working position from the second working position, that is, in the process of the rolling block 6 moving into the space between the ratchet 1 and the pawl 4 with the bracket 5, since the ratchet 1 has released the restriction on the rolling block 6, the rolling block 6 can be rotated counterclockwise around the fourth rotating shaft 61 to reset under the action of the second spring. It can be understood that since the specific installation structure of the second spring and the working principle of the second spring are both prior art, they will not be described in detail in this embodiment.

[0052] Preferably, the door lock also includes a first limit block 91, which is arranged on the side of the pawl 4 away from the ratchet 1. When the pawl 4 is located in the fourth working position, the side of the pawl 4 away from the ratchet 1 abuts against the first limit block 91. The first limit block 91 can limit the angle of rotation of the pawl 4 in the counterclockwise direction around the second rotating shaft 31.

[0053] Furthermore, the door lock further includes a second limit block 92 . When the ratchet 1 rotates from the second working position to the first working position, the ratchet 1 can abut against the second limit block 92 . The second limit block 92 can limit the rotation angle of the ratchet 1 in the clockwise direction around the first rotating shaft 11 .

[0054] In this embodiment, the vehicle door lock also includes a mounting plate (not shown in the figure), the ratchet 1 is rotatably connected to the mounting plate through a first rotating shaft 11, and a channel for the movement of the lock buckle 2 is provided on the mounting plate. When the ratchet 1 is located in the first working position, the opening direction of the capture groove 12 is set at an angle to the extension direction of the channel. When the ratchet 1 is located in the second working position, the opening direction of the capture groove 12 coincides with the extension direction of the channel. The channel can provide a guiding effect for the movement of the lock buckle 2, thereby ensuring that the lock buckle 2 can be accurately moved into the capture groove 12.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A door lock, comprising a ratchet (1) and a lock catch (2), wherein the ratchet (1) is rotatably connected to a first rotating shaft (11), a capture groove (12) is provided on the ratchet (1), the ratchet (1) can be rotated around the first rotating shaft (11) from a first working position to a second working position, when the ratchet (1) is located at the second working position, the lock catch (2) can be moved out of the capture groove (12), characterized in that: The door lock further comprises: A mounting frame (3) and a pawl (4), wherein the mounting frame (3) is provided with a second rotating shaft (31) and a third rotating shaft (32), the axes of the second rotating shaft (31) and the third rotating shaft (32) are both parallel to the axis of the first rotating shaft (11), the second rotating shaft (31) is located on a side of the third rotating shaft (32) away from the ratchet (1), the pawl (4) is rotatably connected to the second rotating shaft (31) and can be rotated from a third working position on a side close to the ratchet (1) to a fourth working position on a side away from the ratchet (1), and the rotation direction of the pawl (4) from the third working position to the fourth working position is the same as that of the ratchet (1). ) is rotated from the first working position to the second working position in the same direction, the pawl (4) is provided with a first arc surface (41) and a second arc surface (42), the first arc surface (41) is located at the downstream side of the second arc surface (42) along the rotation direction of the pawl (4) from the third working position to the fourth working position, the center of the circle where the first arc surface (41) is located is located on the axis of the second rotating shaft (31), the circle where the second arc surface (42) is located is inscribed in the circle where the first arc surface (41) is located, and the diameter of the circle where the first arc surface (41) is located is greater than the diameter of the circle where the second arc surface (42) is located; and A bracket (5) and a rolling block (6), wherein the bracket (5) is rotatably connected to the third rotating shaft (32), and the rolling block (6) is rotatably connected to a side of the bracket (5) away from the third rotating shaft (32) via a fourth rotating shaft (61), the axis of the fourth rotating shaft (61) is parallel to the axis of the first rotating shaft (11), and a third arc surface (62) and a fourth arc surface (63) are arranged on the rolling block (6) in opposite directions, the centers of the circles on which the third arc surface (62) and the fourth arc surface (63) are located are both located on the axis of the fourth rotating shaft (61), and the third arc surface (62) The diameter of the circle on which the fourth arc surface (63) is located is greater than the diameter of the circle on which the fourth arc surface (63) is located, and when the pawl (4) is located at the third working position, the rolling block (6) is located on the rotation path of the ratchet (1) from the first working position to the second working position and abuts between the ratchet (1) and the pawl (4), wherein the first arc surface (41) abuts against the third arc surface (62) and is tangent to the third arc surface (62), and the fourth arc surface (63) abuts against the ratchet (1) and is tangent to the surface of the ratchet (1) that contacts the rolling block (6); The bracket (5) is provided with a mounting hole (51), and the bracket (5) is sleeved on the outer periphery of the third rotating shaft (32) through the mounting hole (51). There is a gap between the mounting hole (51) and the third rotating shaft (32) in the arrangement direction of the third rotating shaft (32) and the fourth rotating shaft (61). The door lock also includes a reset member (7), and the reset member (7) is configured to move the bracket (5) along the third rotating shaft (32) toward the fourth rotating shaft (61) when the rolling block (6) moves away from the rotation path of the ratchet (1) from the first working position to the second working position.

2. The vehicle door lock according to claim 1, characterized in that: The door lock further comprises a housing, the bracket (5) and the housing are respectively provided with a first abutting portion (52) and a second abutting portion (81), the reset member (7) is a torsion spring, the torsion spring is sleeved on the outer periphery of the third rotating shaft (32), the two ends of the torsion spring abut between the first abutting portion (52) and the second abutting portion (81), and when the rolling block (6) abuts between the ratchet (1) and the pawl (4), the torsion spring can be elastically deformed to have elastic potential energy to move the bracket (5) along the third rotating shaft (32) toward the fourth rotating shaft (61) when the rolling block (6) moves away from the ratchet (1) and rotates from the first working position to the second working position.

3. The vehicle door lock according to claim 2, characterized in that: The first abutment portion (52) is disposed on the downstream side of the bracket (5) along the rotation direction of the pawl (4) from the third working position to the fourth working position.

4. The vehicle door lock according to claim 1, characterized in that: The door lock further comprises a first spring, which is capable of elastically deforming when the pawl (4) rotates from the third working position to the fourth working position, so as to have elastic potential energy for resetting the pawl (4) after the bracket (5) moves along the third rotating shaft (32) toward the fourth rotating shaft (61).

5. The vehicle door lock according to claim 1, characterized in that: The door lock further comprises a second spring, which is capable of elastically deforming when the pawl (4) rotates from the third working position to the fourth working position and the ratchet (1) rotates from the first working position to the second working position, so as to have elastic potential energy for resetting the rolling block (6) after the ratchet (1) returns from the second working position to the first working position.

6. The vehicle door lock according to claim 1, characterized in that: The vehicle door lock further comprises a first limit block (91), wherein the first limit block (91) is arranged on a side of the pawl (4) away from the ratchet (1), and when the pawl (4) is located at the fourth working position, the side of the pawl (4) away from the ratchet (1) abuts against the first limit block (91).

7. The vehicle door lock according to claim 1, characterized in that: The vehicle door lock further comprises a second limit block (92), and when the ratchet (1) rotates from the second working position to the first working position, the ratchet (1) can abut against the second limit block (92).

8. The vehicle door lock according to claim 1, characterized in that: The door lock further comprises a mounting plate, the ratchet (1) is rotatably connected to the mounting plate via the first rotating shaft (11), the mounting plate is provided with a channel for the lock catch (2) to move, when the ratchet (1) is located at the first working position, the opening direction of the capture groove (12) is arranged at an angle with the extension direction of the channel, and when the ratchet (1) is located at the second working position, the opening direction of the capture groove (12) coincides with the extension direction of the channel.

9. A vehicle, characterized in that Comprising a vehicle door lock as described in any one of claims 1-8.

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