CN113482462A

CN113482462A - Unlocking device for automobile door lock

Info

Publication number: CN113482462A
Application number: CN202110970162.8A
Authority: CN
Inventors: 何香
Original assignee: Anhui Zhonghe Machinery Manufacturing Co ltd
Current assignee: Anhui Zhonghe Machinery Manufacturing Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2021-10-08

Abstract

The invention relates to an automobile door lock unlocking device, which comprises a worm gear, a crank connecting rod, an unlocking pull rod, a ratchet wheel, a pawl spring, a pawl and an unlocking pull rod spring, wherein the worm gear is connected with the crank connecting rod through a connecting rod; a clamping pin is arranged on the worm wheel, one end of the crank connecting rod is connected with the worm wheel in a matching mode, the other end of the crank connecting rod is connected with the unlocking pull rod, a pawl is arranged at the other end of the unlocking pull rod, and a ratchet wheel is arranged on one side of the pawl; the ratchet is characterized in that an auxiliary pawl is arranged on the pawl, one end of the auxiliary pawl is a fixed end, the other end of the auxiliary pawl is a free end, the fixed end is rotatably arranged on the pawl, the free end is arranged along the fixed end and rotates on the pawl, a roller is arranged on the free end, and the roller is in contact with one side of the pawl, which faces the roller. According to the invention, the roller is arranged at the end part of one side of the pawl, which is in contact with the ratchet wheel, and the roller is in contact with the ratchet wheel along with the rotation of the pawl, so that the contact between the pawl and the ratchet wheel is smooth, the friction force generated by the mutual contact between the ratchet wheel and the pawl is reduced, and the service lives of the ratchet wheel and the pawl are prolonged.

Description

Unlocking device for automobile door lock

Technical Field

The invention relates to an automobile part, in particular to an automobile door lock unlocking device.

Background

The operability and reliability of automobile door locks, which are important accessories of automobile bodies, are related to automobile safety and usability. Along with the continuous development of science and technology and the continuous improvement of requirements of people on comfort level and use feeling, the automobile door lock system deduces intellectualization and comfort, and large sealing force between automobile doors and automobile bodies can provide better noise reduction effect. The sealing force between the vehicle bodies of the vehicle doors is increased, so that the impact and abrasion between ratchet wheels and pawls of the vehicle door lock are increased when the vehicle doors are closed, and the service life of the door lock is influenced.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks, the present invention provides an automobile door lock unlocking device.

The technical scheme adopted by the invention for solving the technical problems is as follows: an automobile door lock unlocking device comprises a worm gear, a crank connecting rod, an unlocking pull rod, a ratchet wheel, a pawl spring, a pawl and an unlocking pull rod spring;

a clamping pin is arranged on the worm wheel, one end of the crank connecting rod is connected with the worm wheel in a matching mode, the other end of the crank connecting rod is connected with the unlocking pull rod, a pawl is arranged at the other end of the unlocking pull rod, and a ratchet wheel is arranged on one side of the pawl; an unlocking pull rod spring is arranged on the unlocking pull rod, and a pawl spring is arranged between the ratchet wheel and the pawl;

the ratchet is characterized in that an auxiliary pawl is arranged on the pawl, one end of the auxiliary pawl is a fixed end, the other end of the auxiliary pawl is a free end, the fixed end is rotatably arranged on the pawl, the free end is arranged along the fixed end and rotates on the pawl, a roller is arranged on the free end, and the roller is in contact with one side of the pawl, which faces the roller.

In one embodiment of the invention, the outer contour of the clamping foot is a curve protruding towards the crank connecting direction.

In one embodiment of the invention, a spring support is arranged on the pawl, a roller support is arranged at the center of the roller, and the roller support is connected with the spring support through a spring.

In one embodiment of the present invention, the auxiliary pawl is disposed on the pawl through an auxiliary pillar, the auxiliary pillar is disposed at a fixed end of the auxiliary pawl, and the auxiliary pillar is rotatably connected to the auxiliary pawl.

In one embodiment of the invention, a ratchet groove is formed on one surface of the ratchet wheel, which is in contact with the pawl, and the roller is arranged in the ratchet groove.

In an embodiment of the present invention, the ratchet groove penetrates through the bottom end of the ratchet side, and the top end of the ratchet groove of the ratchet side is provided with a limiting block.

In an embodiment of the invention, the inner surfaces of the ratchet wheel groove and the roller wheel groove are both arc surfaces, and the outer surfaces of the partition plate and the roller wheel protrusion are both arc surfaces.

In one embodiment of the invention, the pawl is further provided with a limiting column, the limiting column is positioned between the auxiliary pawl and the pawl rotating shaft, and one side of the auxiliary pawl abuts against the limiting column when the ratchet wheel and the pawl are in an unlocking state.

The invention has the beneficial effects that: according to the invention, the roller is arranged at the end part of one side of the pawl, which is in contact with the ratchet wheel, the roller replaces the ratchet wheel, and the roller is in contact with the ratchet wheel along with the rotation of the pawl, so that the contact between the pawl and the ratchet wheel is smooth, the friction force generated by the mutual contact between the ratchet wheel and the pawl is reduced, and the service lives of the ratchet wheel and the pawl are prolonged.

Drawings

FIG. 1 is a first structural schematic diagram of the present invention in a locked state;

FIG. 2 is a second structural schematic diagram of the present invention in a locked state;

FIG. 3 is a first structural schematic diagram of the present invention in an unlocked state;

FIG. 4 is a structural schematic diagram II of the invention in an unlocked state;

FIG. 5 is a structural schematic view of the pawl and ratchet wheel of the present invention in an unlocked state;

FIG. 6 is a structural schematic view of the pawl and ratchet wheel in a locked state of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 5;

FIG. 8 is a schematic view of a roller structure;

FIG. 9 is a schematic view of the structure of the contact surface of the ratchet and the pawl;

in the figure: 1. a worm gear; 101. clamping a pin; 2. a crank connecting rod; 3. unlocking the pull rod; 4. a ratchet wheel; 401. a ratchet spring; 5. a pawl spring; 6. a pawl; 601. a spring support; 602. a ratchet groove; 603. a limiting block; 604. a ratchet wheel protrusion; 7. unlocking the pull rod spring; 8. an auxiliary pawl; 801. an auxiliary strut; 802. a pawl rotation shaft; 9. a roller; 901. the roller is raised; 902. a roller groove; 903. a roller support; 10. a spring; 11. a buffer block; 12. a limiting column.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

As shown in fig. 1 to 4, an automobile door lock unlocking device comprises a worm wheel 1, a crank connecting rod 2, an unlocking pull rod 3, a ratchet 4, a pawl spring 5, a pawl 6 and an unlocking pull rod spring 7;

a clamping foot 101 is arranged on the worm wheel 1, one end of the crank connecting rod 2 is connected with the worm wheel 1 in a matching way, the other end of the crank connecting rod is connected with the unlocking pull rod 3, a pawl 6 is arranged at the other end of the unlocking pull rod 3, a ratchet 4 is arranged on one side of the pawl 6, and a buffer block 11 is arranged on the other side of the pawl in a matching way; an unlocking pull rod spring 7 is arranged on the unlocking pull rod 3, and a pawl spring 5 is arranged between the ratchet wheel 4 and the pawl 6;

as shown in fig. 1 and 2, the door lock is in a locked state, the pawl 6 tightly abuts against the ratchet 4 under the action of the pawl spring force, the ratchet 4 is tightly meshed with the pawl 6, at the moment, the ratchet 4 tightly abuts against the pawl 6 under the action of the ratchet spring 401, and the unlocking pull rod 3 and the pawl 6 are pressed by respective return springs and are stopped on the buffer block 11 of the pawl;

when an owner needs to unlock, an unlocking electric button in a vehicle is pressed, a door lock motor is started to drive a worm wheel 1 to rotate, a clamping pin 101 of the worm wheel 1 pushes a crank pull rod 2 to enable the crank pull rod 2 to rotate, the other end of the crank pull rod 2 is in an unlocking pull rod hole to drive an unlocking pull rod 3 to rotate, a pawl 6 is stirred while the unlocking pull rod 3 rotates, the pawl 6 rotates by overcoming a pawl spring 5 and an unlocking pull rod spring force 7, when the pawl rotates to be separated from a ratchet wheel main locking position, a ratchet wheel 4 is released, the pawl returns under the action of the ratchet wheel spring force, a door lock is locked, and an unlocking door is opened.

As shown in fig. 5 and 6, the pawl 5 is provided with an auxiliary pawl 8, one end of the auxiliary pawl 8 is a fixed end, the other end of the auxiliary pawl 8 is a free end, the fixed end is rotatably arranged on the pawl 6, the free end rotates on the pawl 6 along the fixed end, the free end is rotatably provided with a roller 9, and the roller 9 is in contact with one side of the pawl 6 facing the roller; specifically, the auxiliary pawl 8 is provided on the pawl 8 through an auxiliary support 801, the auxiliary support 801 is provided at a fixed end of the auxiliary pawl 8, and the auxiliary support 801 is rotatably connected to the auxiliary pawl 8.

The contact between the pawl and the ratchet wheel is in sliding contact through the roller, so that the contact between the pawl and the ratchet wheel is smoother, the friction to the ratchet wheel in the rotating process of the pawl is reduced, and the service lives of the ratchet wheel and the pawl are prolonged.

In this application, the outline of card foot 101 is to the convex curve of 2 directions of crank connecting rod for the one side that card foot 101 and crank connecting rod 2 contacted is comparatively slick and sly, avoids the card foot to cause great striking along with worm wheel pivoted in-process to crank connecting rod, reduces the impact and the vibrations of card foot to crank connecting rod, prolongs crank connecting rod's life.

The spring support 601 is arranged on the pawl 6, the roller support 903 is arranged in the center of the roller 9, the roller support 903 is connected with the spring support 601 through the spring 10, namely, in the rotating process of the pawl, the roller is ejected upwards or downwards by the ratchet wheel, and the spring is arranged, so that the roller is reset under the action of spring force and weight after the pawl is disengaged from the ratchet wheel, and the door lock is conveniently opened again.

In the rotating process of the pawl, the roller on the pawl moves along the side face of the ratchet wheel which is in contact with the pawl, in order to avoid the deviation of the roller from a preset track in the process of moving along the side face of the ratchet wheel, a ratchet wheel groove 602 is arranged on one face, which is in contact with the pawl 6, of the ratchet wheel 4, the roller 9 is arranged in the ratchet wheel groove 601, and the roller is limited through the ratchet wheel groove 602, so that the roller can only move in the preset track, the accuracy of the pawl for driving the roller to rotate along the ratchet wheel is improved, and the stability and the safety of the operation between the pawl and the ratchet wheel are improved.

In order to enable the roller to rotate to the top end position of the pawl along the pawl, the ratchet groove 602 penetrates through the bottom end of the side edge of the ratchet wheel, in order to avoid that the roller is separated from the ratchet groove in the door lock unlocking state, the top end of the ratchet groove 602 at the side edge of the ratchet wheel is provided with a limiting block 603, the roller is prevented from being separated from the top end of the ratchet groove through the limiting block 603, and the running stability and the safety of the roller are guaranteed to be seen.

As shown in fig. 5 to 9, in order to further limit the roller and prevent the roller from shaking in the ratchet grooves, at least 1 ratchet groove 602 is provided, ratchet protrusions 604 protruding out of the ratchet grooves 602 are provided on both sides of the ratchet grooves 602, roller protrusions 901 matching with the ratchet grooves 602 are provided on the outer ring of the roller 9, roller grooves 902 are provided between adjacent roller protrusions 901, the ratchet protrusions 604 match with the roller grooves 902, the ratchet grooves 602 match with the roller protrusions 901, that is, by matching multiple sets of ratchet grooves with the roller protrusions and matching multiple sets of partition boards with the roller grooves, the roller and the ratchet are contacted and engaged with each other, and the stability of rotation between the roller and the ratchet is greatly improved.

In order to ensure smooth rotation between the ratchet wheel and the roller and reduce friction force, the inner surfaces of the ratchet wheel groove 602 and the roller groove 902 are both arc surfaces, and the outer surfaces of the ratchet wheel protrusion 604 and the roller protrusion 901 are also both arc surfaces.

In order to avoid the roller moving downwards under the action of gravity, the pawl 6 is further provided with a limiting column 12, the limiting column 12 is located between the auxiliary pawl 8 and the pawl rotating shaft 802, and when the ratchet wheel and the pawl are in an unlocking state, one side of the auxiliary pawl 8 abuts against the limiting column 12.

According to the invention, the roller is arranged at the end part of one side of the pawl, which is in contact with the ratchet wheel, the roller replaces the ratchet wheel, and the roller is in contact with the ratchet wheel along with the rotation of the pawl, so that the contact between the pawl and the ratchet wheel is smooth, the friction force generated by the mutual contact between the ratchet wheel and the pawl is reduced, and the service lives of the ratchet wheel and the pawl are prolonged.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. An automobile door lock unlocking device is characterized by comprising a worm gear, a crank connecting rod, an unlocking pull rod, a ratchet wheel, a pawl spring, a pawl and an unlocking pull rod spring;

2. An automobile door lock unlocking device according to claim 1, wherein the outer contour of the catch is a curve that is convex in a crank direction.

3. An automobile door lock unlocking device according to claim 1, wherein a spring support is provided on the pawl, a roller support is provided at the center of the roller, and the roller support and the spring support are connected by a spring.

4. An automobile door lock unlocking device according to claim 3, wherein the auxiliary pawl is provided on the pawl via an auxiliary stay provided at a fixed end of the auxiliary pawl, and the auxiliary stay is rotatably connected to the auxiliary pawl.

5. An automobile door lock unlocking device according to claim 1, wherein a ratchet groove is provided on a surface of the ratchet wheel which contacts the pawl, and the roller is disposed in the ratchet groove.

6. An automobile door lock unlocking device according to claim 1 or 5, wherein the ratchet groove penetrates through the bottom end of the ratchet side edge, and a stopper is provided at the top end of the ratchet groove of the ratchet side edge.

7. An automobile door lock unlocking device according to claim 6, wherein the inner surfaces of the ratchet groove and the roller groove are both arc surfaces, and the outer surfaces of the partition plate and the roller projection are both arc surfaces.

8. An automobile door lock unlocking device according to any one of claims 1 to 7, wherein a limit post is further provided on the pawl, the limit post is located between the auxiliary pawl and the pawl rotating shaft, and when the ratchet and the pawl are in the unlocked state, one side of the auxiliary pawl abuts against the limit post.