Lock body device, lock system for automobile rear door, and automobile

Abstract

The lock body device of the present disclosure comprises: a lock body shell, the lock body shell is formed with a fish mouth structure for cooperating with a lock catch; a lock bolt, the lock bolt is arranged in the lock body shell; and a pawl, the pawl is arranged in the lock body shell, and can be operated to keep the lock bolt in a full lock position or operated to release the keeping of the lock bolt in the full lock position; wherein the lock bolt and the pawl are arranged on the same side of the fish mouth structure, and the lock bolt is arranged between the fish mouth structure and the pawl.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of automobile rear door lock, and in particular to a lock body device, a lock system for automobile rear door and an automobile. BACKGROUND

[0002] The automobile rear door lock (bottom latch) is a lock configured on the rear door / tail door of some vehicle models, and the lock body mechanism thereof is generally configured on the inner side of the rear door baffle to cooperate with the lock catch configured on the vehicle body to realize the locking function.

[0003] The existing automobile rear door lock generally has a relatively complex structure, for example, having a motor, a drive screw / drive gear mechanism, etc., which leads to a larger occupied space and affects the reliability.

[0004] For example, the automobile rear door lock unlocking mechanism disclosed in Chinese patent document CN201410549513.8 has a clamping plate (lock tongue), a stop pawl (pawl), a support rod, an electric opening arm, a first elastic component, a second elastic component, etc.

[0005] It is necessary to improve and optimize the structure of the automobile rear door lock so that it has a smaller occupied space and more stable performance. SUMMARY

[0006] The present disclosure provides a new lock body device, a lock system for automobile rear door and an automobile.

[0007] The lock body device, the lock system for automobile rear door and the automobile of the present disclosure are implemented through the following technical solutions.

[0008] According to one aspect of the present disclosure, a lock body device is provided, comprising:

[0009] a lock body housing formed with a fish mouth structure for cooperating with a lock catch;

[0010] a lock tongue configured in the lock body housing;

[0011] a pawl configured in the lock body housing, which can be operated to hold the lock tongue in a fully locked position or to release the holding of the lock tongue in the fully locked position;

[0012] wherein the lock tongue and the pawl are configured on the same side of the fish mouth structure, and the lock tongue is configured between the fish mouth structure and the pawl.

[0013] According to the lock body device of at least one embodiment of the present disclosure, the lock tongue has a primary locking position, the pawl has a primary locking structure, and based on the cooperation between the primary locking structure and the primary locking position, the pawl can hold the lock tongue in the fully locked position.

[0014] According to the lock body device of at least one embodiment of the present disclosure, the first locking position is a vertical or substantially vertical extension edge structure with respect to the rotation trajectory line of the lock tongue, and the first locking structure is an edge structure extending along or substantially along the rotation trajectory line of the pawl.

[0015] According to the lock body device of at least one embodiment of the present disclosure, the other side of the fish mouth structure of the lock body housing is configured with a buffer block, which buffers the lock catch when the lock tongue moves to the full locking position.

[0016] According to the lock body device of at least one embodiment of the present disclosure, the pawl is operated to release the holding of the lock tongue in the full locking position based on a pull wire.

[0017] According to the lock body device of at least one embodiment of the present disclosure, the pawl is configured with a pull wire mounting structure, and one end of the pull wire can be fixedly connected with the pawl based on the pull wire mounting structure.

[0018] According to the lock body device of at least one embodiment of the present disclosure, the pull wire can be operated by a mechanical operating force or an electric operating force.

[0019] According to the lock body device of at least one embodiment of the present disclosure, the lock body housing is formed with a pull wire guide structure, and the pull wire is extended by the pawl and guided out of the lock body housing through the pull wire guide structure to be operated by a mechanical operating force or an electric operating force.

[0020] According to the lock body device of at least one embodiment of the present disclosure, the lock tongue has a lock tongue shaft, and the lock tongue can be operated to rotate around the lock tongue shaft; the pawl has a pawl shaft, and the pawl can be operated to rotate around the pawl shaft.

[0021] In which, the central axis of the pawl shaft is parallel to the central axis of the lock tongue shaft, and the extension direction of the pull wire is perpendicular to the central axis of the pawl shaft / lock tongue shaft.

[0022] According to the lock body device of at least one embodiment of the present disclosure, the lock body housing is formed with two or more mounting portions, and the lock body device can be fixedly mounted to the rear door or the rear door baffle of the automobile via the mounting portions.

[0023] According to another aspect of the present disclosure, a lock system for a rear door of an automobile is provided, comprising:

[0024] The lock body device of any one of the embodiments of the present disclosure; a lock catch cooperating with the lock bolt of the lock body device to perform a locking function; and a pull wire; wherein the number of the lock body devices and the number of the lock catches are both two, the two lock body devices are arranged on both sides of the automobile rear door, and the pawl of the two lock body devices is operated by the one pull wire to perform an unlocking operation.

[0025] According to yet another aspect of the present disclosure, there is provided an automobile, comprising: an automobile body; an automobile rear door; and a lock system for the automobile rear door according to any one of the embodiments of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0026] 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.

[0027] Figure 1 is a schematic diagram of the overall structure of the lock body device according to one embodiment of the present disclosure.

[0028] Figure 2 is Figure 1 is a schematic diagram of the structure of the lock body device after removing a part of the shell structure (unlocked state / full open state).

[0029] Figure 3 is Figure 1 is a schematic diagram of the structure of the lock body device after removing a part of the shell structure (full lock state).

[0030] Figure 4 is Figure 3 is a schematic diagram of the structure of the lock body device from another perspective.

[0031] Reference sign explanation

[0032] 100 lock body shell

[0033] 101 fish mouth structure

[0034] 102 buffer block

[0035] 103 pull wire guide structure

[0036] 104 mounting portion

[0037] 105 lock bolt blocking structure

[0038] 106 pull wire guide groove

[0039] 200 lock bolt

[0040] 201 primary lock position

[0041] 202 locking lever shaft

[0042] 203 locking lever inner arm

[0043] 204 locking lever outer arm

[0044] 300 pawl

[0045] 301 primary locking structure

[0046] 302 tension wire mounting structure

[0047] 303 pawl shaft

[0048] 304 pawl main arm

[0049] 1000 lock body device

[0050] 1061 guide groove protruding edge. DETAILED DESCRIPTION

[0051] The present disclosure will be further described in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely exemplary and are not limiting to the disclosure. In addition, it should also be noted that only parts related to the present disclosure are shown in the drawings for the purpose of description.

[0052] It should be noted that the embodiments and features in the embodiments of the present disclosure can be combined with each other without conflict. The technical solutions of the present disclosure will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0053] Unless otherwise specified, the exemplary embodiments / examples shown will be understood to provide 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.

[0054] Cross-hatching and / or shading in the drawings is generally used to make the boundaries and regions of adjacent components more clearly understood. As such, unless specifically stated otherwise, the presence of cross-hatching or shading in a drawing is not a requirement for structural components, material properties, dimensions, proportions, common materials, and / or any other features of the components shown in the drawings. In addition, in the drawings, the size and relative sizes of components can be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, a specific process sequence can be performed in a different order from that described. For example, two consecutively described processes can be performed substantially simultaneously or in an order opposite to that described. In addition, the same reference numerals represent the same components.

[0055] When a component is referred to as being "on" or "on top of", "connected to", or "coupled to" another component, it can be directly on, directly connected to, or directly coupled to the other component, or intervening components can be present. 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 present. To that end, the term "connected" can refer to a physical or electrical connection, with or without intervening components.

[0056] For descriptive purposes, the disclosure can use spatial or relative terms, such as "below", "lower", "lowermost", "above", "upper" and "uppermost", "vertical", "horizontal", and the like, to describe the relationship between one component and another component as the figure(s) can appear. The spatial and / or relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Moreover, the device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0057] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including", "includes", "having", "has", "a", "an", "one" or "said" and variants thereof are used in either the detailed description and / or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising" or "including" as an open transition term without precluding any additional or other elements. It is also noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as synonyms for "about", so that the term "approximately" and / or "substantially" and / or "about" and / or the like are used to account for manufacturing tolerances, imperfections, measurement error, and / or other factors that will be appreciated by those of ordinary skill in the art.

[0058] Figure 1 is a schematic diagram of the overall structure of a lock body device according to an embodiment of the present disclosure. Figure 2 is Figure 1 is a schematic diagram of the structure of the lock body device after removing a part of the housing structure (unlocked state / full open state). Figure 3 isFigure 1 Structure diagram of the lock body device shown after part of the shell is removed (full lock state). Figure 4 is Figure 3 Structure diagram of another perspective of the lock body device shown.

[0059] The following detailed description of the lock body device of the present disclosure is made with reference to the accompanying drawings. Figures 1 to 4 The lock body device of the present disclosure is described in detail.

[0060] Firstly, referring to Figure 1 and Figure 2 In some embodiments of the present disclosure, the lock body device 1000 of the present disclosure comprises: a lock body shell 100, the lock body shell 100 is formed with a fish mouth structure 101 for cooperating with a lock catch (not shown); a lock bolt 200, the lock bolt 200 is arranged inside the lock body shell 100; a pawl 300, the pawl 300 is arranged inside the lock body shell 100, and can be operated to keep the lock bolt 200 in a full lock position or to release the keeping of the lock bolt 200 in the full lock position; wherein the lock bolt 200 and the pawl 300 are arranged on the same side of the fish mouth structure 101, and the lock bolt 200 is arranged between the fish mouth structure 101 and the pawl 300.

[0061] The present disclosure arranges the lock bolt 200 and the pawl 300 on the same side of the fish mouth structure 101 and arranges the lock bolt 200 between the fish mouth structure 101 and the pawl 300, so that the lock body device 1000 of the present disclosure has an oblong shape and occupies less space.

[0062] It can be seen that the lock body shell 100 of the lock body device 1000 of the present disclosure has an oblong shape. Figure 1 and Figure 2 It can be seen that the lock body shell 100 of the lock body device 1000 of the present disclosure has an oblong shape.

[0063] The lock body shell 100 of the lock body device 1000 of the present disclosure can include a shell bottom plate, a shell circumferential plate, and a shell cover plate to form a containing space for containing components such as the lock bolt 200 and the pawl 300. Adjustments made by those skilled in the art to the structure and shape of the lock body shell under the inspiration of the technical solutions of the present disclosure all fall within the protection scope of the present disclosure.

[0064] Referring to Figure 2 The lock body device 1000 of the present disclosure optimizes the cooperation mode of the lock bolt 200 and the pawl 300, configures the lock bolt 200 to have a primary locking position 201, configures the pawl 300 to have a primary locking structure 301, and based on the cooperation of the primary locking structure 301 of the pawl 300 and the primary locking position 201 of the lock bolt 200, the pawl 300 can keep the lock bolt 200 in the full lock position.

[0065] Referring to Figure 2The latch 200 has a recessed structure that engages with the latch. When the latch 200 is in the fully open position ( Figure 2 The opening direction of the recessed structure is perpendicular or approximately perpendicular to the opening direction of the lock body housing 100. Through this structural design, the overall space occupied by the lock body device 1000 is further reduced.

[0066] In a preferred embodiment of this disclosure, reference is made to Figure 2 The latch 200 has an inner latch arm 203 and an outer latch arm 204. The length of the outer latch arm 204 is less than the length of the inner latch arm 203. When the latch 200 is in the fully open position, the recessed structure between the inner latch arm 203 and the outer latch arm 204 allows the fish mouth structure 101 of the lock body housing 100 to be opened, thereby allowing the latch to disengage from the lock body device 1000.

[0067] Continue to refer to Figure 2 and Figure 3 In some embodiments of this disclosure, the primary locking position 201 of the latch 200 is an extended edge structure that is perpendicular or substantially perpendicular to the rotation trajectory line of the latch 200, and the primary locking structure 301 of the pawl 300 is an edge structure that extends along or substantially along the rotation trajectory line of the pawl 300.

[0068] The above-disclosed structural design makes the cooperation between the first-level locking position 201 and the first-level locking structure 301 simpler, and the locking tongue 200 can have a stable working state in both the fully open and fully locked positions.

[0069] Continue to refer to Figure 2 and Figure 3 In some embodiments of this disclosure, the latch 200 has a latch shaft 202, the latch 200 can be operated to rotate about the latch shaft 202, and the pawl 300 has a pawl shaft 303, the pawl 300 can be operated to rotate about the pawl shaft 303.

[0070] Both the locking tongue shaft 202 and the pawl shaft 303 can be implemented by rivets. Those skilled in the art, inspired by the technical solutions disclosed herein, can adjust the specific types of the locking tongue shaft 202 and the pawl shaft 303, etc., all of which fall within the protection scope of this disclosure.

[0071] The central axis of the pawl shaft 303 is parallel to the central axis of the latch shaft 202.

[0072] A pawl reset spring (not shown) can be configured on the pawl shaft 303, one end of the pawl reset spring is fixed on the pawl shaft 303, and the other end is fixed on the pawl 300, or one end of the pawl reset spring is fixed on the inner wall of the cover plate of the lock body shell 100, and the other end is fixed on the pawl 300, so that the pawl 300 has a tendency to move towards the lock tongue 200.

[0073] A lock tongue reset spring (not shown) can be configured on the lock tongue shaft 202, one end of the lock tongue reset spring is fixed on the lock tongue shaft 202, and the other end is fixed on the lock tongue 200, or one end of the lock tongue reset spring is fixed on the inner wall of the cover plate of the lock body shell 100, and the other end is fixed on the lock tongue 200, so that the 300 has a tendency to move towards the pawl 300 (i.e. a tendency to move towards the fully open position).

[0074] Those skilled in the art can adjust the type and specific configuration of the pawl reset spring and the lock tongue reset spring under the inspiration of the technical scheme of the present disclosure, which all fall within the protection scope of the present disclosure.

[0075] In the preferred embodiment of the present disclosure, the lock body shell 100 of the present disclosure is formed with a lock tongue blocking structure 105, which has a fold shape, so that when the lock tongue 200 is actuated to the fully open position under the action of the lock tongue reset spring, the movement range of the lock tongue outer arm 204 can be limited by the lock tongue blocking structure 105, thereby being kept in the fully open position.

[0076] The present disclosure sets the above-mentioned lock tongue blocking structure 105, and no longer needs to configure a special component to limit the movement range of the lock tongue, thereby simplifying the structure of the lock body device 1000.

[0077] Those skilled in the art can adjust the shape of the lock tongue blocking structure 105 under the inspiration of the technical scheme of the present disclosure, which all fall within the protection scope of the present disclosure.

[0078] Preferably, the lock tongue blocking structure 105 is formed by extending upward from the shell bottom plate, and is detachably or non-detachably fixedly connected with the shell bottom plate.

[0079] Continuing to refer to Figure 2 and Figure 3 In the preferred embodiment of the present disclosure, the pawl 300 of the lock body device 1000 of the present disclosure is operated based on a pull wire (such as a Bowden pull wire, not shown) to release the holding of the lock tongue 200 in the fully locked position.

[0080] Preferably, referring to Figure 2 and Figure 3 The extension direction of the pull wire is perpendicular to the central axis of the pawl shaft 303 / lock tongue shaft 202, so that the lock body device 1000 as a whole can realize an oblong shape.

[0081] In some embodiments of the present disclosure, referring to Figure 2 and Figure 3 The other side of the fish mouth structure 101 of the lock body shell 100 is configured with a buffer block 102, and the present disclosure does not particularly limit the shape of the buffer block 102. When the lock tongue 200 moves to the full lock position, the buffer block 102 buffers the lock catch.

[0082] When the lock tongue 200 is operated by the lock catch to move from the full open position shown in Figure 2 to the full lock position shown in Figure 3 , the buffer block 102 can effectively buffer the action of the lock catch. The buffer block 102 can be of a flexible material.

[0083] In order to enable the lock body device 1000 of the present disclosure to work stably, the pawl main arm 304 of the pawl 300 is configured with a pull wire mounting structure 302 (preferably a pull wire head clamping structure), and one end of the pull wire can be fixedly connected with the pawl 300 based on the pull wire mounting structure 302.

[0084] Referring to Figure 3 and Figure 4 In the preferred embodiments of the present disclosure, the lock body shell 100 of the present disclosure is formed with a pull wire guide structure 103 (for example, formed on the shell circumferential wall of the lock body shell 100), and the pull wire is extended by the pawl 300 and guided out of the lock body shell 100 through the pull wire guide structure 103 to be operated by mechanical operation force or electrically operated force.

[0085] Preferably, the present disclosure is configured with a pull wire guide groove 106 between the pawl 300 and the pull wire guide structure 103 in the lock body shell 100. By providing the pull wire guide groove 106, the action of the pull wire can be effectively guided, and the pull wire can be prevented from being stuck or rubbed by other structures in the lock body shell 100. Referring to Figure 3 and Figure 4 The pull wire guide groove 106 is a semi-open guide groove, and the inner wall surface thereof is an arc surface. Through this structural design, the pull wire can be prevented from being stuck during the action.

[0086] More preferably, the present disclosure forms a guide groove protruding edge 1061 on the pull wire guide groove 106. The guide groove protruding edge 106 can block the pull wire from coming out of the pull wire guide groove 106, and referring to Figure 4 , it can also block the pawl main arm 304 of the pawl 300, so that the movement range of the pawl 300 when operated by the pull wire can be limited.

[0087] Referring to Figures 1 to 4In some embodiments of the present disclosure, the lock body shell 100 is formed with two or more mounting portions 104, via which the lock body device 1000 can be fixedly mounted to the automobile rear door (tailgate) or automobile rear door apron. Mounting holes can be formed on the mounting portions 104, and those skilled in the art can adjust the structure / type of the mounting portions 104 under the inspiration of the technical solutions of the present disclosure, which all fall within the protection scope of the present disclosure.

[0088] It should be noted that, Figures 1 to 4 The structure shown is intended to provide a detailed description of the lock body device of the present disclosure and should not be understood as a limitation on the technical solutions of the lock body device of the present disclosure.

[0089] Based on the lock body device of the present disclosure, the present disclosure further provides a lock system for an automobile rear door, which comprises: the lock body device 1000 of any one of the embodiments of the present disclosure; a lock catch cooperating with the lock bolt 200 of the lock body device 1000 to perform a locking function; and a pull wire; wherein the number of the lock body device 1000 and the number of the lock catch are both two, the two lock body devices 1000 are arranged on the two sides of the automobile rear door (automobile rear door apron), and the pawls 300 of the two lock body devices 1000 are operated by a pull wire to perform an unlocking operation.

[0090] The lock catch is mounted on the automobile body.

[0091] Based on the lock body device of the present disclosure and the lock system for an automobile rear door, the present disclosure further provides an automobile, which comprises: an automobile body; an automobile rear door (tailgate); and the lock system for an automobile rear door of the present disclosure.

[0092] In the description of the present disclosure, the description of the terms "one embodiment / way", "some embodiments / ways", "example", "specific example" or "some examples" 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 disclosure. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments / ways or examples in a suitable manner. In addition, those skilled in the art can combine and combine the features of different embodiments / ways or examples described in the present description and the features of different embodiments / ways or examples without contradiction.

[0093] In addition, the terms "first", "second", etc. are used only for the purpose of description, and should not be understood as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0094] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Other changes or modifications can be made on the basis of the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A lock body device, characterized by Comprising: a lock body housing formed with a fish mouth structure for cooperating with a lock catch; a lock bolt configured within the lock body housing; and a pawl configured within the lock body housing, which can be operated to retain the lock bolt in a fully locked position or to release the retention of the lock bolt in the fully locked position; wherein the lock bolt and the pawl are configured on the same side of the fish mouth structure, and the lock bolt is configured between the fish mouth structure and the pawl; the lock bolt has a lock bolt inner arm and a lock bolt outer arm, the length of the lock bolt outer arm is less than the length of the lock bolt inner arm, and when the lock bolt is in a fully open position, the recess structure between the lock bolt inner arm and the lock bolt outer arm can be released from the fish mouth structure of the lock body housing due to the length of the lock bolt outer arm being less than the length of the lock bolt inner arm; the lock body housing is formed with a lock bolt blocking structure having a fold shape, so that when the lock bolt is moved to the fully open position under the action of a lock bolt return spring, the movement range of the lock bolt outer arm can be limited by the lock bolt blocking structure, thereby maintaining the fully open position. The lock bolt has a primary locking position, and the pawl has a primary locking structure, based on the cooperation between the primary locking structure and the primary locking position, the pawl can retain the lock bolt in the fully locked position.

2. The lock body device of claim 1, wherein The primary locking position is an extended edge structure perpendicular to the rotation trajectory line of the lock bolt, and the primary locking structure is an edge structure extending along the rotation trajectory line of the pawl.

3. The lock body assembly of claim 2, wherein, The other side of the fish mouth structure of the lock body housing is configured with a buffer block, which buffers the lock catch when the lock bolt moves to the fully locked position.

4. The lock body device according to any one of claims 1 to 3, characterized in that, The pawl is operated to release the retention of the lock bolt in the fully locked position based on a pull wire.

5. The lock body device according to any one of claims 1 to 3, wherein The pull wire is fixedly connected to the pawl based on a pull wire mounting structure on the pawl.

6. The lock body assembly of claim 5, wherein, The pull wire can be operated by a mechanical operating force or an electric operating force.

7. The lock body assembly of claim 6, wherein, The lock body housing is formed with a pull wire guide structure, the pull wire extends from the pawl and is guided out of the lock body housing via the pull wire guide structure to be operated by a mechanical operating force or an electric operating force.

8. The lock body assembly of claim 6, wherein, The lock bolt has a lock bolt shaft, the lock bolt can be operated to rotate around the lock bolt shaft, and the pawl has a pawl shaft, the pawl can be operated to rotate around the pawl shaft; 9. The lock body assembly of claim 8, wherein, wherein the central axis of the pawl shaft is parallel to the central axis of the lock bolt shaft, and the extension direction of the pull wire is perpendicular to the central axes of the pawl shaft and the lock bolt shaft. The lock body housing is formed with two or more mounting portions, via which the lock body device can be fixedly installed to a car back door or a car back door baffle.

10. The lock body assembly of claim 1, wherein, Comprising:

11. A lock system for a rear door of a vehicle, characterized in that the lock body device of any one of claims 1 to 10; a lock catch cooperating with the lock bolt of the lock body device to perform a locking function; and one pull wire; wherein the number of the lock body device and the number of the lock catch are both two, the two lock body devices are configured on the two sides of a car back door, and the pawls of the two lock body devices are operated by the one pull wire to perform an unlocking operation. Comprising:

12. An automobile characterized by comprising: a car body; a car back door; and ​ ​ Lock system for a rear door of a car according to claim 11.

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