Locking device without restriction of the order of opening or closing of a door and vehicle
The locking device allows independent operation of front and rear doors in B-pillar free vehicles, addressing the lack of order restrictions and enhancing security by connecting doors to each other, reducing component count and preventing door damage.
Patent Information
- Application Number
- DE102019130760
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-06-21
- Filing Date
- 2019-11-14
- Publication Date
- 2025-10-09
- Estimated Expiration
- 2039-11-14
AI Technical Summary
Existing vehicle door locking systems do not allow independent opening and closing of front and rear doors without restricting the order, and they lack a solution for securing the rear door in B-pillar free vehicles.
A locking device with a first and second locking mechanism that connects front and rear doors, allowing independent operation and securing them without limiting the order of opening or closing, reducing the number of components by locking or unlocking doors relative to each other.
Enables independent opening and closing of front and rear doors without order restrictions, preventing damage and enhancing security by maintaining doors in a fixed state when closed.
Smart Images

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Abstract
Description
TECHNICAL FIELD
[0001] The present invention relates to a locking device without restriction of the order of opening or closing of doors mounted on a vehicle and to a vehicle. BACKGROUND
[0002] Generally, a vehicle has a passenger compartment which has a predetermined size so that a driver or an accompanying passenger can sit therein, and passenger compartment opening / closing doors are installed on the vehicle body to open or close the passenger compartment.
[0003] In the case of a passenger vehicle, the doors that open / close the passenger compartment include a front door installed longitudinally along a front side of the vehicle and a rear door installed longitudinally along a rear side of the vehicle. The front door and rear door are typically mounted on the vehicle body and are hinged to rotate.
[0004] Recently, a B-pillar-less door is used, from which the B-pillar has been removed, to increase the open space of the passenger compartment and to make it easier to load items and improve the conditions that allow occupants to get in or out of a confined space.
[0005] Generally, the B-pillar is installed to ensure occupant safety by providing strength against a broadside impact of a vehicle. To create a B-pillar-free door, it is necessary that the front and rear doors are neither damaged nor opened by an impact on a lateral side of the vehicle.
[0006] In this regard, Korean Patent No. 10-1199223 (Front Door Locking Device for B-Pillar-Free Vehicles) discloses in the related art a door locking device comprising: a top-end locking device provided at an inner upper end of a front door and configured to be caught or released by a top-end striker; a bottom-end locking device provided at the inner lower end of the front door and configured to be caught or released by a bottom-end striker; a drive device provided inside the front door and configured to operate the top-end locking device and the bottom-end locking device such thatthat the upper locking device and the lower locking device are respectively caught or released by the upper striker and the lower striker in accordance with an unlocked or locked mode of either a safety handle or a key, with which the upper and lower locking devices are simultaneously controlled to open or close the front door in accordance with the unlocked or locked mode of either the safety handle or the key.
[0007] However, Korean Patent KR 10 1 199 223 B1 only discloses a technique for more securely locking the front door of the vehicle body, but does not disclose a solution regarding the rear door.
[0008] The order of opening or closing the front and rear doors is sometimes predetermined depending on the vehicle. For example, regarding the order of opening or closing the doors, the front door is opened first, followed by the rear door when the doors are opened, and the rear door is closed first, followed by the front door when the doors are closed.
[0009] DE 10 2010 053 179 A1 discloses a motor vehicle door lock.
[0010] US 10 458 158 B2 discloses a vehicle door locking device. SHORT DESCRIPTION
[0011] The present invention has for its object to provide a locking device having a novel structure capable of locking or unlocking front and rear doors by connecting the front and rear doors, and capable of opening or closing the front or rear door regardless of the order of opening or closing the front and rear doors.
[0012] To achieve the object, the invention provides a locking device according to claim 1 and a vehicle according to claim 10. Further embodiments are described in the dependent claims.
[0013] According to the present invention, any one of the first and second doors can be opened by independent operations of the locking device without limiting the order of opening the doors, and as a result, there is no limitation on the order of opening the doors.
[0014] According to the present invention, the first locking device and the second locking device can be kept in the fixed state when the doors are closed, and as a result, it is possible to prevent the doors from being opened and damaged.
[0015] According to the present invention, a method of locking or unlocking the first and second doors relative to each other is used instead of a method of locking or unlocking the first and second doors with respect to the vehicle body, and as a result, the number of components is reduced. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view illustrating a state in which a first locking device and a second locking device according to an exemplary embodiment of the present invention are respectively attached to a first door and a second door. Fig. 2 is a perspective view showing the Fig. 1 represents the first locking device. Fig. 3 is an exploded perspective view showing a state in which the Fig. 2 shown first locking device is disassembled. Fig. 4 is a view illustrating a safety gear according to the exemplary embodiment of the present invention / disclosure. Fig. 5 is a perspective view showing the Fig. 1 represents the second locking device. Fig. 6 is an exploded perspective view showing a state in which the Fig. 4 shown second locking device is disassembled. Fig. 7A is a view illustrating an operation of releasing the locking device by pulling a cable connected to the first locking device, and Fig. 7B is a view illustrating a state in which the first locking device and the second locking device are separated from each other after the locking device is released. Fig. Fig. 8A is a view illustrating an operation of releasing the locking device by pulling the cable connected to the second locking device, and Fig. 8B is a view illustrating a state in which the first locking device and the second locking device are separated from each other after the locking device is released. DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS
[0016] In the following, exemplary embodiments of a locking device according to the present invention will be described in detail with reference to the drawings, without limiting the order of opening or closing doors. Terms or words used herein should not be interpreted as limiting a generic or literal meaning, but should be interpreted as a meaning and concept that conforms to the technical spirit of the present invention based on a principle by which an inventor can approximately define a concept of a term appropriately to best describe his / her own invention.
[0017] Fig. 1 is a view illustrating a state in which a first locking device and a second locking device according to an exemplary embodiment of the present invention are respectively attached to a first door and a second door, Fig. 2 is a perspective view showing the Fig. 1 shows the first locking device, Fig. 3 is an exploded perspective view showing a state in which the Fig. 2 shown first locking device is disassembled, Fig. 4 is a view illustrating a safety gear according to the exemplary embodiment of the present invention / disclosure, Fig. 5 is a perspective view showing the Fig. 1 represents the second locking device, and Fig. 6 is an exploded perspective view showing a state in which the Fig. 5 shown second locking device is disassembled.
[0018] Related to Fig. 1 to 6, the locking device according to an exemplary embodiment of the present invention / disclosure is configured to lock and unlock doors connected to a B-pillar-free vehicle body without limiting the order of opening or closing doors. The locking device includes a first locking device 100 and a second locking device 200. Here, the first locking device 100 is arranged inside a first door 10, and the second locking device 200 is arranged inside a second door 20. In the present specification, based on the vehicle body, the first door 10 is arranged at a front side and the second door 20 is arranged at a rear side, but the positions of the first and second doors 10 and 20 are not limited.
[0019] According to the exemplary embodiment of the present invention, the first and second doors 10 and 20 are connected to the vehicle body so as to be slidable in a direction in which the first and second doors 10 and 20 face each other or are away from each other. However, in another exemplary embodiment of the present invention, the first door (normal door) 10 may be swingably connected to the vehicle body, and the second door 20 may be slidably connected to the vehicle body, or vice versa. The first and second doors 10 and 20 may be swingably connected to the vehicle body. However, the lock device according to the present invention can be applied to a vehicle body structure without a B-pillar, regardless of door structure types.
[0020] The first locking device 100 and the second locking device 200 are connected while facing each other at opposite positions when the first door 10 and the second door 20 are closed. To this end, the first locking device 100 is positioned on a lateral side of the first door 100, and the second locking device 200 is positioned on a lateral side of the second door 20 such that it faces the first locking device 100.
[0021] The first locking device 100 includes a first plate 110 having a holder portion to be attached to the first door 10, a catch device 120 connected to the first plate 110, a latch device 130, and a first release lever 140.
[0022] As in Fig. 2 and Fig. As shown in Figure 3, the safety catch 120 is connected to the first plate 110 such that it is rotatable about a safety catch shaft 121. The safety catch shaft 121 is fixedly connected to the first plate 110. The safety catch 120 has a receiving groove 122, a catch portion 124 formed on one side of the receiving groove 122, and a weight portion 126 formed on the other side of the receiving groove 122.
[0023] The receiving groove 122 is recessed towards the inside of the safety catch 120 and is configured to receive the locking bar device 220 to be described below, and the receiving groove 122 has a shape corresponding to a shape of the locking bar device 220. For this purpose, a rotation region of the safety catch 120 has a region in which the receiving groove 122 faces the locking bar device 220.
[0024] Meanwhile, the first plate 110 has a plate insertion groove 112 having a shape corresponding to the shape of the striker device 220, so that the striker device 220 can be received in the receiving groove 122 of the safety device 120 and can be inserted into the first locking device 100.
[0025] The catch portion 124 is formed on one side of the receiving groove 122 and has a hook shape. Here, a side of the receiving groove 122 means a direction toward the striker device 220, as shown in Fig. 2 and Fig. 3 shown.
[0026] The weight portion 126 is formed on the other side of the receiving groove 122 and has a higher weight than the catching portion 124. Here, the other side of the receiving groove 122 means a direction facing away from the striker device 220, as in Fig. 2 and Fig. 3 shown.
[0027] As described above, the receiving groove 122, the catching portion 124, and the weight portion 126 of the safety catch 120 are rotatable about the safety catch rotation shaft 121. When no external force is applied to the safety catch 120, the weight portion 126 is positioned on a lower side due to its weight, and the receiving groove 122 and the catching portion 124 are inclined toward the striker device 220.
[0028] A striker damper 150 is disposed on one side of the safety catch 120, so that the striker device 220 is placed on the striker damper 150. The striker damper 150 restricts movement of the striker device 220 inserted into the first locking device 100, thereby reducing noise when the striker device 220 moves. The striker damper 150 may be made of an elastic material such as rubber, but the material of the striker damper 150 is not limited.
[0029] As in Fig. 3, the latch device 130 is connected to the first plate 110 so as to be rotatable about the latch device rotation shaft 131 and is attached to a lower side of the catch device 120. Here, the latch device rotation shaft 131 is fixedly connected to the first plate 110. A catch projection 133 is formed at one end of the latch device 130, and the latch device rotation shaft 131 is inserted into the other end of the latch device 130. Here, the catch projection 133 may contact one end of a second release lever 240 to be described below.
[0030] The latch device 130 has a catch / corresponding portion 134. The catch / corresponding portion 134 has a hook shape corresponding to the shape of the catch portion 124 of the catch device 120 and can be brought into contact with and released from the catch portion 124. Therefore, rotation of the catch device 120 is restricted when the catch portion 124 and the catch / corresponding portion 134 are in contact with each other, and the catch device 120 is rotated when the catch portion 124 and the catch / corresponding portion 134 are not in contact with each other.
[0031] A latch damper 136 is disposed on one side of the latch 130. The latch damper 136 restricts movement of the latch 130 so that the latch 130 rotates within a predetermined range, thereby reducing noise generated when the latch 130 moves. The latch damper 136 may be made of an elastic material such as rubber, but the material of the latch damper 136 is not limited.
[0032] One end of the first release lever 140 is rotatably connected to the rotating shaft 131 of the latch device in a direction opposite to the latch device 130. A return spring R is disposed between the rotating shaft 131 of the latch device and the first release lever 140, and the return spring R provides an elastic force to assist the rotation of the latch device 130 and the first release lever 140 together when the release device 130 and the first release lever 140 are rotated.
[0033] Specifically, the return spring R provides an elastic force to assist the rotation of the latch device 130 and the first release lever 140 together in one direction when an external force is applied. On the other hand, the latch device 130 and the first release lever 140 are rotated together in the opposite direction by an elastic restoring force from the return spring R when the external force is removed.
[0034] However, as in Fig. 3, the latch device 130 and the first release lever 140 are connected to each other by the latch device's rotary shaft 131 with a housing 160 disposed therebetween. This results in the return spring R and the first release lever 140 being disposed on one side of the housing 160, the latch device 130 being disposed on an opposite side of the housing 160, and the latch device's rotary shaft 131 penetrating the housing 160 such that the latch device 130 and the first release lever 140 are connected to each other.
[0035] The first release lever 140 is rotated about the rotating shaft 131 of the latch device and has a movement-restricting notch 142 for restricting the rotation range of the first release lever 140 to a predetermined range. The movement-restricting notch 142 receives a movement-restricting projection 144, which is fixedly connected to the first plate 110 such that the movement of the first release lever 140 is restricted within a range of the movement-restricting notch 142.
[0036] A cable C is connected to an opposite end of the first release lever 140. Therefore, when the cable C is moved rectilinearly, the first release lever 140 rotates around the rotating shaft 131 of the ratchet device. Here, the cable C is housed in a first cable device 170 arranged on one side of the first plate 110, and the cable C extends to the outside through a first cable passage 172. The rectilinear movement of the cable C can be performed automatically by a winch device, such as a motor connected to the cable C, and a control device for controlling the winch device.
[0037] Meanwhile, in an exemplary embodiment of the present invention, a housing 180 is provided for accommodating the first plate 110 and the components connected to the first plate 110. A housing insertion groove 182, which corresponds to the shape of the plate insertion groove 112, is formed on one side of the housing 180.
[0038] The second locking device 200 includes a second plate 210 having a holder portion to be attached to the second door 20, and the striker device 220 connected to the second plate 210, and the second release lever 240.
[0039] As in Fig. As shown in Figure 6, the striker device 220 is fixedly connected to the second plate 210 and has a loop shape that points toward the first locking device 100. The catch portion 124 of the catch device 120 can be inserted into the loop of the striker device 220 or extend from it.
[0040] As in Fig. As shown in Figure 5, the second release lever 240 is connected to the second plate 210 such that it is rotatable about a lever pivot shaft 241. Here, the lever pivot shaft 242 is fixedly connected to the second plate 210. A return spring R' is disposed between the lever pivot shaft 241 and the second release lever 240, and the return spring R' provides an elastic force to assist in rotating the second release lever 240.
[0041] Specifically, the return spring R' provides an elastic force to assist in preventing rapid movement of the second release lever 240 while the second release lever 240 rotates in one direction when an external force is applied. On the other hand, the elastic restoring force of the return spring R' assists in rotating the second release lever 240 in the reverse direction when the external force is removed.
[0042] One end of the second release lever 240 can be in contact with the catch projection 133 of the latch device 130 in a state where the first and second doors 10 and 20 are closed. In an exemplary embodiment of the present invention, one end of the second release lever 240 is arranged on an upper side of the catch projection 133.
[0043] The cable C is connected to the opposite end of the second release lever 240. Therefore, when the cable C is moved rectilinearly, the second release lever 240 rotates around the lever's rotary shaft 241. Here, the cable C is housed in a second cable device 270 arranged on one side of the second plate 210, and the cable C extends to the outside through a second cable passage 272. The rectilinear movement of the cable C can be performed automatically by a winch device, such as a motor connected to the cable C, and a control device for controlling the winch device.
[0044] Fig. 7A is a view illustrating an operation of releasing the locking device by pulling a cable connected to the first locking device, Fig. 7B is a view illustrating a state in which the first locking device and the second locking device are separated from each other after the locking device is released, Fig. Fig. 8A is a view illustrating an operation of releasing the locking device by pulling the cable connected to the second locking device, and Fig. 8B is a view illustrating a state in which the first locking device and the second locking device are separated from each other after the locking device is released.
[0045] Hereinafter, an operation procedure of the locking device without limiting the order of opening or closing doors according to the exemplary embodiment of the present invention / disclosure will be described with reference to Fig. 7A, Fig. 7B, Fig. 8A and 8B.
[0046] According to the locking device without restriction on the order of opening or closing doors according to the exemplary embodiment of the present invention, the first door 10 or the second door 20 is opened while either the first locking device 100 or the second locking device 200 is operated in a state where the first and second doors 10 and 20 are closed, and as a result, there is no restriction on the order of opening or closing the doors.
[0047] In a state where the first and second doors 10 and 20 are closed, the striker device 220 is inserted into the plate insertion groove 112 of the first plate 110, and the catch portion 124 of the catch device 120 is inserted into the loop of the striker device 220. Furthermore, the catch device 120 cannot be rotated because the catch portion 124 is in contact with the catch / corresponding portion 134 of the latch device 130. As a result, the first and second doors 10 and 20 are fixed to each other because the first and second locking devices 100 and 200 are connected to each other.
[0048] First, an operation of opening the first door 10 or the second door 20 by the operation of the first locking device 100 will be described.
[0049] As in Fig. As shown in Figure 7A, the first release lever 140 and the latch device 130 connected to the first release lever 140 are rotated counterclockwise when the cable C is moved straight upward. At this time, rapid movement of the latch device 130 is prevented by the elastic force of the return spring R inserted into the rotating shaft 131 of the latch device.
[0050] When the latch device 130 moves downward during counterclockwise rotation, the contact between the catch / corresponding portion 134 and the catch portion 124 is released, and the catch device 120 is rotated clockwise by the weight of the weight portion 126, so that the catch portion 124 extends to the outside of the loop of the striker device 220. Then, the first and second locking devices 100 and 200 are separated. Therefore, the first door 10 or the second door 20 can be opened, as shown in Fig. 7B is shown.
[0051] Next, an operation of opening the first door 10 or the second door 20 by the operation of the second locking device 200 will be described.
[0052] As in Fig. As shown in Fig. 8A, the second release lever 240 is rotated clockwise when the cable C is moved straight upward. At this time, rapid movement of the second release lever 240 is prevented by the elastic force of the return spring R inserted into the rotation shaft 241 of the lever.
[0053] The rotatable second release lever 240 rotates the latch device 130 counterclockwise by being caught by the catch projection 133. In this case, the contact between the catch / corresponding portion 134 and the catch portion 124 is released as the latch device 130 moves downward, and the catch portion 124 extends to the outside of the loop of the striker device 220 as the catch device 120 is rotated clockwise by the weight of the weight portion 126. Then, the first and second locking devices 100 and 200 are separated. Therefore, the first door 10 and the second door 20 can be opened, as shown in Fig. 8B.
[0054] The locking device without limiting the order of opening or closing doors according to the exemplary embodiment of the present invention locks or unlocks the first and second doors 10 and 20 connected to the vehicle body.
[0055] The first and second doors 10 and 20, which are in the locked and closed state, are unlocked when the first locking device 100 or the second locking device 200 is operated. In this case, either the first door 10 or the second door 20 can be opened first, which means that the first and second doors 10 and 20 can be opened simultaneously.
[0056] Either the first door 10 or the second door 20, which are in the unlocked and open state, can be closed first, which means that the first and second doors 10 and 20 can be closed simultaneously. When the first and second doors 10 and 20 are closed, the first and second locking devices 100 and 200 are fixed to each other.
Claims
[1] A locking device which has no restriction on the order of opening or closing doors and which is suitable for locking or unlocking a first and a second door (10, 20) connected to a vehicle body, and opening any one of the first and the second door (10, 20) in a state in which the doors (10, 20) are closed and locked, or closing any one of the first door (10) and the second door (20) in a state in which the doors (10, 20) are unlocked and open, the locking device comprising: a first locking device (100) comprising a catch device (120) arranged on a lateral side of the first door (10) and rotatably connected to a first plate (110), a latch device (130) rotatably connected to the first plate (110) for rotating the catch device (120) or restricting rotation of the catch device (120), and a first unlocking lever (140) configured to assist in rotating the latch device (130) about a rotation shaft (131) for the latch device (130), a second locking device (200) arranged on a lateral side of the second door (20) to oppose the first locking device (100), the second locking device (200) comprising a second release lever (240) rotatably connected to a second plate (210), and a striker device (220) adapted to be received or released by the rotatable catch device (120), and a striker device damper (150) disposed on one side of the safety gear (120), the striker device damper (150) being configured to allow the striker device (220) to be placed thereon to restrict movement of the striker device (220) and to reduce noise occurring when the striker device (220) moves. [2] Locking device according to claim 1, wherein the catch device (120) comprises a receiving groove (122) adapted to receive the striker device (220), a catch portion (124) formed on one side of the receiving groove (122) and adapted to be caught by the pawl device (130) to restrict the rotation of the catch device (120), and a weight portion (126) formed on the other side of the receiving groove (122) and adapted to assist the rotation of the catch device (120). [3] The locking device according to claim 2, wherein the latch device (130) includes a catch / corresponding portion (134) having a shape corresponding to a shape of the catch portion (124). [4] A locking device according to any one of claims 1-3, wherein one end of the second release lever (140) and one end of the latch device (130) which are not in contact with each other are rotatable in opposite directions. [5] The locking device according to any one of claims 1-4, wherein a catch projection (133) in contact with the second release lever (240) is formed at one end of the latch device (130). [6] Locking device according to one of claims 1-5, wherein a return spring (R) is arranged on the rotary shaft (131) for the latch device, wherein the return spring (R) is arranged to provide an elastic force so that the latch device (130) and the first unlocking lever (140), which are in a connected state, are rotated in one direction when an external force is applied, and wherein the return spring (R) is arranged to provide an elastic restoring force so that the latch device (130) and the first unlocking lever (140) are rotated in an opposite direction when the external force is removed. [7] Locking device according to one of claims 1-6, wherein a movement-restricting projection (144) is formed on the first plate (110) and wherein a movement-restricting groove (142) adapted to receive the movement-restricting projection (144) is formed in the first release lever (140). [8] Locking device according to one of claims 1-7, further comprising a cable (C) connected to the first release lever (140) or the second release lever (240). [9] Locking device according to one of claims 1 to 8, further comprising a latch device damper (136) configured to restrict movement of the latch device (130) and to reduce noise occurring when the striker device (220) moves, the latch device damper (136) being provided on one side of the latch device (130). [10] Vehicle comprising: a vehicle body, a first door (10) connected to a first side of the vehicle body, a second door (20) connected to the first side of the vehicle body, a first locking device (100) comprising a catch device (120) arranged on a lateral side of the first door (10) and rotatably connected to a first plate (110), a latch device (130) rotatably connected to the first plate (110) for rotating the catch device (120) or restricting rotation of the catch device (120), and a first unlocking lever (140) configured to assist in rotating the latch device (130) about a rotary shaft (131) for the latch device, a second locking device (200) arranged on a lateral side of the second door (20) to oppose the first locking device (100), the second locking device (200) comprising a second release lever (240) rotatably connected to a second plate (210), and a striker device (220) adapted to be received or released by the rotatable catch device (120), and a striker device damper (150) disposed on one side of the safety gear (120), the striker device damper (150) being configured to allow the striker device (220) to be placed thereon to restrict movement of the striker device (220) and to reduce noise occurring when the striker device (220) moves. [11] The vehicle according to claim 10, wherein the safety catch (120) comprises a receiving groove (122) configured to receive the striker device (220), a catching portion (124) formed on one side of the receiving groove (122) and configured to be caught by the pawl device (130) to restrict rotation of the safety catch (120), and a weight portion (126) formed on the other side of the receiving groove (122) and configured to assist rotation of the safety catch (120). [12] The vehicle according to claim 11, wherein the latch device (130) has a catch / corresponding portion (134) having a shape corresponding to a shape of the catch portion (124). [13] A vehicle according to any one of claims 10 to 12, wherein one end of the second release lever (240) and one end of the latch device (130) which are not in contact with each other are rotatable in opposite directions. [14] A vehicle according to any one of claims 10 to 13, wherein a catching projection (133) in contact with the second unlocking lever (240) is formed at one end of the latch device (130). [15] A vehicle according to any one of claims 10 to 14, wherein a return spring (R) is arranged on the rotation shaft for the latch device (130), the return spring (R) being arranged to provide an elastic force such that the latch device (130) and the first release lever (140), which are in a connected state, are rotated in one direction when an external force is applied, and the return spring (R) being arranged to provide an elastic restoring force such that the latch device (130) and the first release lever (140) are rotated in an opposite direction when the external force is removed. [16] A vehicle according to any one of claims 10 to 15, wherein a movement-restricting projection (144) is formed on the first plate (110), and wherein a movement-restricting groove (142) adapted to receive the movement-restricting projection (144) is formed in the first release lever (140). [17] Vehicle according to one of claims 10 to 16, further comprising a cable (C) connected to the first release lever (140) or the second release lever (240). [18] A vehicle according to any one of claims 10 to 17, further comprising a latch device damper (136) configured to restrict movement of the latch device (130) and to reduce noise occurring when the striker device (220) moves, the latch device damper (136) being provided on a side of the latch device (130).
Citation Information
Patent Citations
Motor vehicle door lock is provided with locking units and locking bolt, where release lever units are provided for locking units
DE102010053179A1
Locking device of front door for b-pillarless vehicle
KR101199223B1
Vehicle door lock apparatus
US10458158B2
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