Mechanical key unlocking mechanism

Abstract

The invention provides a mechanical key unlocking mechanism, and belongs to the technical field of automobile door locks, the mechanical key unlocking mechanism comprises a spring bolt arranged on a shell, the spring bolt is actuated by an opening rod, and the opening rod is actuated by a transition rod; the mechanical key unlocking mechanism further comprises a pull rod assembly, the pull rod assembly comprises a pull rod, the pull rod slides on the shell and is matched with the transition rod to rotate, and a pull rod limiting end b is arranged on the pull rod. And the external opening assembly rotates on the shell and can actuate the transition rod to rotate. The invention provides a motor vehicle door lock capable of electrically and independently unlocking an external unlocking insurance and keeping a mechanical unlocking insurance. A central control part of the mechanism is provided with an independent motor and a transmission mechanism, and is provided with the transmission mechanism for mechanically releasing safety, so that no conflict exists; the system can be matched with the whole vehicle control logic for use, and can meet the requirement of a user on independent insurance unlocking by using a key.

Description

Technical Field

[0001] The present invention relates to the field of automotive door locks, and more particularly, to a mechanical key unlocking mechanism. Background Art

[0002] With the development and demands of the actual application in the automotive market, the automotive opening and closing system not only needs to have the requirements of automation, electrification and independence, but also needs to retain the mechanical properties related to the traditional side door locks; the door needs to have an electric unlocking insurance and also has a traditional key backup, each having independence and not conflicting with each other; among them, in daily use, it can be matched with the vehicle logic for automatic unlocking insurance, and it is also necessary to retain the use of the key for mechanical unlocking insurance to avoid the situation of vehicle power loss or no power, and the vehicle can be mechanically locked by the key. While retaining the electrification of the vehicle, the use under actual special working conditions can also be considered. Summary of the Invention

[0003] To make up for the above deficiencies, the present invention provides a mechanical key unlocking mechanism, aiming to improve the problem that the door needs to have an electric unlocking insurance and also has a traditional key backup, each having independence and not conflicting with each other.

[0004] The present invention is implemented as follows:

[0005] The present invention provides a mechanical key unlocking mechanism, including a lock tongue provided on a housing, the lock tongue being actuated by an opening rod, and the opening rod being actuated by a transition rod;

[0006] The mechanical key unlocking mechanism further includes:

[0007] A pull rod assembly, including a pull rod that slides on the housing and rotates in cooperation with the transition rod, and a pull rod limit end is provided on the pull rod;

[0008] An external opening assembly, which rotates on the housing and can actuate the transition rod to rotate;

[0009] A key rod assembly, which is installed in the housing and is provided with a limiting portion. When the limiting portion abuts against the pull rod limit end, the key rod assembly drives the pull rod to move; when the limiting portion disengages from the pull rod limit end, the pull rod is released from the drive of the key rod assembly.

[0010] Preferably, the opening rod actuates the rotation of the lock tongue through a push pawl assembly.

[0011] Preferably, an opening rod protrusion is provided on the opening rod, and the transition rod rotates in the housing. When the transition rod abuts against the opening rod protrusion, it actuates the opening rod to rotate.

[0012] Preferably, the external opening assembly includes an external opening lever that rotates coaxially with the opening rod;

[0013] The external opening lever is provided with a connection hole, which is connected to an external wire;

[0014] The external opening lever is provided with a mounting groove, and one end of the transition rod is mounted in the mounting groove.

[0015] Preferably, the pull rod slides along its length direction in the housing;

[0016] The pull rod is provided with a transition rod hole, and the transition rod rotates in the transition rod hole.

[0017] Preferably, the key rod assembly includes:

[0018] A first key rod, which rotates on the housing;

[0019] A second key rod, which rotates on the housing, and one end of the second key rod is movably connected to the first key rod, and the limiting portion is arranged on the second key rod.

[0020] Preferably, the first key rod rotates on the housing through a second shaft;

[0021] The first key rod is provided with an operation hole, and the operation hole is connected to an external key pull rod;

[0022] The first key rod is provided with a connection portion, and the connection portion is convex or concave.

[0023] Preferably, the second key rod rotates on the housing through a third shaft.

[0024] Preferably, the limiting portion has a concave structure, and the limiting end of the pull rod is located in the limiting portion.

[0025] Preferably, one end of the second key rod away from the limiting portion has a convex structure, and the convex structure is movably connected to the connection portion.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides a motor vehicle door lock with an electric independent unlocking and external opening insurance and a reserved mechanical unlocking insurance. The central control part of this mechanism is equipped with an independent motor and a transmission mechanism, and at the same time has a transmission mechanism for mechanical unlocking insurance, which do not conflict with each other; it can be used in combination with the vehicle control logic and can also meet the user's need to independently unlock the insurance with a key. Description of the Drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0029] Figure 1 is a schematic diagram of the overall structure;

[0030] Figure 2 is a schematic diagram with the key link in the middle position and the pull rod in the first sliding position (unlocking the safety);

[0031] Figure 3 is a schematic diagram with the key link in the middle position and the pull rod in the second sliding position (locking the safety);

[0032] Figure 4 is a schematic diagram with the key link in the unlocking safety position and the pull rod in the first sliding position (unlocking the safety);

[0033] Figure 5 is a schematic diagram with the key link in the locking safety position and the pull rod in the second sliding position (locking the safety);

[0034] Figure 6 is a schematic diagram of the initial position of the external opening link and the pull rod in the first sliding position (unlocking the safety);

[0035] Figure 7 is a schematic diagram of the pulled position of the external opening link and the pull rod in the first sliding position (unlocking the safety). Detailed Embodiments

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present invention.

[0037] Embodiment

[0038] Referring to Figures 1-7 , a mechanical key unlocking mechanism includes a lock tongue 11 provided on a housing. The lock tongue 11 is actuated by an opening rod 18, and the opening rod 18 is actuated by a transition rod 63. Specifically, the transition rod 63 actuates the lock tongue 11 through the opening rod 18 to complete the unlocking or locking effect.

[0039] A pull rod 65 is provided on the housing and can slide along its length direction, that is, slide on the housing. The pull rod 65 can be stably located at the first sliding position or the second sliding position.

[0040] One end of the pull rod 65 is provided with a pull rod limiting end 65b, and a transition rod hole 65c is provided in the middle of the pull rod 65.

[0041] An external opening lever 61 is also provided on the housing and is arranged on the housing in a manner that can rotate around a first axis, wherein the first axis is fixed on the housing.

[0042] In addition, a connection hole 61a is provided at the end of the external opening lever 61 far from the first axis. The connection hole 61a can be connected to an external wire to provide the function of external operation. According to whether the wire is pulled or not, it is divided into position three (not pulled) and position four (pulled).

[0043] Preferably, on the external opening lever 61, it is rotatably sleeved on the second axis 67a on the housing, and an installation groove 61b is provided along the direction from the second axis to the hole. Preferably, the installation groove 61b is arranged as follows: when the external opening lever 61 is in position three (not pulled), the direction of the installation groove 61b is parallel to or very close to the sliding direction of the pull rod 65.

[0044] One end of the transition rod 63 is rotatably connected to the transition rod hole 65c at the end of the pull rod 65, and the other end is arranged in the installation groove 61b. When the external opening lever 61 is in position three (not pulled), the reciprocating sliding of the pull rod 65 drives the transition rod (63) to move together.

[0045] An opening rod 18 is arranged in the housing and is installed on the housing in a manner that rotates around the first axis. An opening rod protrusion 18a is provided on the opening rod 18. When the pull rod 65 is in the first sliding position (unlocking the safety), the transition rod 63 and the opening rod protrusion 18a form a cooperation. If the external opening lever 61 moves from position three to position four, it can push the opening rod 18 to move together, and the latter further pushes the pawl to release the restriction on the locking tongue 11. Thus, the unlocking action of the door lock is realized. When the pull rod 65 is in position two (locking the safety), the transition rod 63 and the opening rod protrusion 18a do not form a cooperation. If the wire pulls the external opening rod 18 and moves from position three to position four, it cannot push the opening rod 18 to move together, that is, it cannot unlock, which is the locking the safety function.

[0046] A key rod one 67 that can rotate around the second axis 67a is also provided on the housing. The second axis 67a is arranged parallel to the first axis. One end of it is provided with an operation hole 67b. Preferably, the operation hole 67b is connected to a key pull rod (not shown) outside the door lock. When the key pull rod is pulled, it can drive the key rod one 67 to rotate.

[0047] The housing is also provided with a second key rod 69 that can rotate around a third axis. The third axis is arranged parallel to the second axis 67a. One end thereof is a convex structure 69c, which can cooperate with the connecting portion 67c provided on the first key link 67. As a result, the first key rod 67 can drive the second key rod 69 to rotate bidirectionally. In one embodiment, the convex structure 69c is set to be convex, and the connecting portion 67c is set to be "concave". In another embodiment, the connecting portion 67c is set to be convex, and the convex structure 69c is set to be "concave", achieving the same effect.

[0048] One end of the second key rod 69 is provided with a connecting wall 69a and a limiting portion 69b, and the concave structure formed by the connecting wall 69a and the limiting portion 69b cooperates with the pull rod limiting end 65b at the end of the pull rod 65. As Figure 2 and Figure 3 shown, when the second key rod 69 and the first key rod 67 are in the middle position, when an external force changes the working position of the pull rod 65 and switches between the first sliding position and the second sliding position, the pull rod limiting end 65b does not contact the concave structure. The second key rod 69 and the first key rod 67 are not affected.

[0049] When the pull rod 65 is located at Figure 2 the first sliding position (unlocking the safety) in Figure 3 , when the operation hole 67b is toggled to the left, the first key link 67 rotates clockwise around the second axis 67a, further driving the second key link 69 to rotate counterclockwise. The limiting portion 69b pushes the pull rod limiting end 65b to move leftward, thereby driving the pull rod 65 into the second sliding position. The above operation realizes the operation of setting the safety with a mechanical key. When the pull rod 65 is located at

[0050] the second sliding position (setting the safety), when the operation hole 67b is toggled to the right, the first key link 67 rotates counterclockwise around the second axis 67a, further driving the second key link 69 to rotate clockwise. The connecting wall 69a pushes the pull rod limiting end 65b to move rightward, thereby driving the pull rod 65 into the first sliding position. The above operation realizes the operation of unlocking the safety with a mechanical key.

[0050] Optionally, a worm gear is arranged inside the housing and is rotatably connected to the housing around a first axis. A torsion spring is provided. One end thereof is fixed to the worm gear, and one end is fixed to the housing. By setting an appropriate eccentric angle, the worm gear can be stably located at one of the two limit angles through it, that is, providing a gear position feeling. The cooperation between the worm gear and the torsion spring and its working effect are well-known technologies in the field of door locks and will not be elaborated further. One end of the pull rod 65 is connected to the above-mentioned worm gear and slides following its rotation angle. As a result, it can be stably located at position one or position two.

[0051] It should be noted that the specific model specifications of the motor need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A mechanical key unlocking mechanism, comprising a lock tongue (11) arranged on a housing, characterized in that: The locking tongue (11) is actuated by an opening rod (18), and the opening rod (18) is actuated by a transition rod (63); The mechanical key unlocking mechanism also includes: A pull rod assembly, comprising a pull rod (65) which slides on the housing and rotates in coordination with the transition rod (63), and a pull rod limiting end (65b) is provided on the pull rod (65); An external opening assembly is rotated on the housing to actuate the transition rod (63) to rotate; A key rod assembly is installed in the shell and is provided with a limiting portion (69b). When the limiting portion (69b) contacts the limiting end (65b) of the pull rod, the key rod assembly drives the pull rod (65) to move; when the limiting portion (69b) is separated from the limiting end (65b) of the pull rod, the pull rod (65) releases the drive of the key rod assembly.

2. A mechanical key unlocking mechanism according to claim 1, characterized in that: The opening rod (18) actuates the locking tongue (11) to rotate by pushing the pawl assembly.

3. A mechanical key unlocking mechanism according to claim 2, characterized in that: The opening rod (18) is provided with an opening rod protrusion (18a), and the transition rod (63) rotates in the housing. When the transition rod (63) contacts the opening rod protrusion (18a), the opening rod (18) is actuated to rotate.

4. A mechanical key unlocking mechanism according to claim 3, characterized in that: The external opening assembly comprises an external opening lever (61) which rotates coaxially with the opening rod (18); The external opening lever (61) is provided with a connection hole (61a) which is connected to an external pull wire (165); The external opening lever (61) is provided with a mounting groove (61b), and one end of the transition rod (63) is mounted in the mounting groove (61b).

5. A mechanical key unlocking mechanism according to claim 4, characterized in that: The pull rod (65) slides in the housing along its length direction; The pull rod (65) is provided with a transition rod hole (65c), and the transition rod (63) rotates in the transition rod hole (65c).

6. A mechanical key unlocking mechanism according to claim 5, characterized in that: The key rod assembly comprises: A key rod (67) is rotatable on the housing; The second key rod (69) is rotated on the shell, and one end of the second key rod (69) is movably connected to the first key rod (67), and the limiting part (69b) is arranged on the second key rod (69).

7. A mechanical key unlocking mechanism according to claim 6, characterized in that: The key rod (67) is rotated on the housing via a second shaft (67a); The key rod (67) is provided with an operating hole (67b), and the operating hole (67b) is connected to an external key pull rod; The key rod (67) is provided with a connecting portion (67c), and the connecting portion (67c) is convex or concave.

8. A mechanical key unlocking mechanism according to claim 7, characterized in that: The second key rod (69) is rotated on the housing through a third shaft (68).

9. A mechanical key unlocking mechanism according to claim 8, characterized in that: One end of the key rod 2 (69) includes a connecting wall (69a) and a limiting portion (69b), the connecting wall (69a) and the limiting portion (69b) form a concave structure, and the pull rod limiting end (65b) is located in the limiting portion (69b).

10. A mechanical key unlocking mechanism according to claim 9, characterized in that: One end of the second key rod (69) away from the limiting portion (69b) is a convex structure (69c), and the convex structure (67c) and the connecting portion (67c) are movably connected.

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