Stroke-adjustable door lock outward opening switching mechanism and mine car

Abstract

The utility model discloses a stroke-adjustable door lock outward opening switching mechanism and a mine car, comprising a base which penetrates through a car door welding assembly and is fixed on an outer handle; the rocker arm is fixed on the base through a riveting shaft, a step is arranged on the riveting shaft, and the height of the step is larger than the thickness of the rocker arm; the return torsion spring is installed on the riveting shaft and located between the base and the rocker arm, and two supporting legs of the return torsion spring are fixed to the base and the rocker arm respectively; one end of the outward-opening pull rod is connected with the stroke adjusting nut through a screw rod structure of the outward-opening pull rod, the other end of the outward-opening pull rod is connected with the lock body, and the stroke adjusting nut is connected with the rocker arm. According to the stroke-adjustable door lock outward-opening switching mechanism, the rocker arm and the outward-opening pull rod are connected through the stroke adjusting nut, so that the Z-direction up-down position of the outward-opening pull rod can be adjusted, and the problems that when a car door lock system and a car door are assembled, the opening stroke is insufficient, a door lock fails and the like due to assembly accumulated errors are solved; and the tolerance and the reliability of the door lock system are improved.

Description

Technical Field

[0001] The utility model relates to an adjustable-stroke door lock external opening conversion mechanism and a mine car, belonging to the technical field of automobile parts. Background Art

[0002] Basically, mine cars are equipped with a mechanical external opening mechanism for the door lock, which is used to open the door when the door is locked.

[0003] The existing door lock external opening mechanisms generally include two types: the external pulling type and the pressing type. Among them, the external pulling type has a simple door opening method, and the unlocking direction is the same as the door opening direction, enabling the driver to apply force naturally when opening the door. Just a gentle pull can open the door, without complex operation steps or waiting time. Therefore, it is used in many vehicle models.

[0004] Due to the opening method of the lock body, which is generally unlocked by pulling downward in the Z direction, for the external pulling type of opening, an external opening conversion mechanism is required to convert the Y outward pulling action of the external handle into a downward pulling action of the lock body. There are two conventional conversion mechanisms: the first is to separately install an external opening conversion mechanism on the door, which is combined with the external handle to form a door lock external opening mechanism. Because of the separate installation, the dimensional deviation caused by the cumulative error is relatively large; the second is to assemble the external opening conversion mechanism on the vehicle door external handle, thereby integrating the door lock external opening mechanism and improving product consistency. However, since the external handle is mostly made of plastic material, after the external opening conversion mechanism is fixed to the external handle by bolts or pins, the door of the mine truck vibrates greatly, and there are reliability risks such as the detachment of the external opening conversion mechanism. Summary of the Invention

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides an adjustable-stroke door lock external opening conversion mechanism and a mine car, which solve the problem of large dimensional deviation caused by the cumulative error due to the separate installation of the external opening conversion mechanism and the external handle.

[0006] In order to achieve the above purpose, an adjustable-stroke door lock external opening conversion mechanism adopted by the utility model includes:

[0007] A base, which is fixed to the external handle through the door welding assembly.

[0008] A rocker arm, which is fixed to the base through a riveting shaft. A step is provided on the riveting shaft, and the height of the step is greater than the thickness of the rocker arm, so as to keep a rotational freedom degree after the rocker arm is fixed.

[0009] A return torsion spring, which is installed on the riveting shaft and located between the base and the rocker arm. The two legs of the return torsion spring are respectively fixed to the base and the rocker arm.

[0010] An outward-opening pull rod, one end of the outward-opening pull rod is connected to a stroke adjustment nut through its own screw structure, the other end is connected to a lock body, and the stroke adjustment nut is connected to a rocker arm.

[0011] In some embodiments, the base is fixed to the outer handle by bolts passing through the door welding assembly.

[0012] In some embodiments, a riveting shaft gasket for limiting the rocker arm is installed on the riveting shaft.

[0013] In some embodiments, the riveting shaft gasket is riveted to the riveting shaft.

[0014] In some embodiments, the rocker arm is L-shaped, one side is connected to the push rod of the outer handle, the other side is connected to the stroke adjustment nut, and the riveting shaft is installed in the middle of the rocker arm.

[0015] In some embodiments, a guide hole is formed in the rocker arm, the rocker arm is connected to the push rod of the outer handle through a pin shaft, and one end of the pin shaft is installed in the guide hole and can move along the guide hole.

[0016] In some embodiments, the stroke adjustment nut is fixed to the rocker arm by a split pin, and a stepped shaft is provided on the stroke adjustment nut.

[0017] In a second aspect of the present invention, a mine car is provided, and the adjustable-stroke door lock outward-opening conversion mechanism is installed on the mine car.

[0018] Compared with the prior art, the adjustable-stroke door lock outward-opening conversion mechanism of the present invention connects the rocker arm and the outward-opening pull rod through a stroke adjustment nut, so that the Z-direction up and down position of the outward-opening pull rod can be adjusted, thereby solving the problems of insufficient opening stroke and door lock failure caused by the cumulative error in the assembly of the door lock system and the door during assembly, and improving the tolerance and reliability of the door lock system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is an axonometric exploded view of the present invention;

[0021] Figure 2 It is an axonometric view of the present invention;

[0022] Figure 3 It is the front view of the present invention;

[0023] Figure 4 For Figure 3 View A-A of

[0024] In the figure: 1. Base, 2. Rocker arm, 21. Guide hole, 3. Riveting shaft, 4. Return torsion spring, 5. Outer-opening pull rod, 6. Stroke adjustment nut, 7. Riveting shaft gasket. Specific implementation mode

[0025] To make the purpose, technical solution and advantages of the present utility model clearer, the technical solution of this application will be described in detail below through the attached drawings and specific embodiments. It should be understood that the specific features in the embodiments of this application and the embodiments are detailed descriptions of the technical solution of this application, rather than limitations on the technical solution of this application. Without conflict, the technical features in the embodiments of this application and the embodiments can be combined with each other.

[0026] As Figures 1-4 shown, an outer-opening conversion mechanism for a door lock with adjustable stroke includes a base 1, a rocker arm 2, a return torsion spring 4 and an outer-opening pull rod 5;

[0027] The base 1 passes through the door welding assembly and is fixed on the outer handle; the rocker arm 2 is fixed on the base 1 through a riveting shaft 3. There is a step on the riveting shaft 3, and the height of the step is greater than the thickness of the rocker arm 2, so as to keep a degree of freedom of rotation after the rocker arm 2 is fixed; the return torsion spring 4 is installed on the riveting shaft 3 and is located between the base 1 and the rocker arm 2. The two legs of the return torsion spring 4 are respectively fixed on the base 1 and the rocker arm 2; one end of the outer-opening pull rod 5 is connected to the stroke adjustment nut 6 through its own screw structure, and the other end is connected to the lock body. The stroke adjustment nut 6 is connected to the rocker arm 2. Under the action of an external force (such as pulling by the outer handle push rod), the rocker arm 2 can rotate around the riveting shaft 3, and can be reset by the return torsion spring 4 after the external force disappears; the rocker arm 2 is connected to the outer-opening pull rod 5 through the stroke adjustment nut 6. Therefore, when the rocker arm 2 is subjected to an external force (such as pulling by the outer handle push rod) and rotates, the other end will drive the outer-opening pull rod 5 to move downward through the stroke adjustment nut 6, so as to pull the lock body downward to release the lock, realizing the functional requirements of the outer-opening mechanism of the automobile door lock.

[0028] In some embodiments, the base 1 is fixed on the outer handle through bolts passing through the door welding assembly, and the base 1 is the fixed main body of the whole mechanism.

[0029] In some embodiments, as Figures 1-4 shown, a riveting shaft gasket 7 is installed on the riveting shaft 3. The riveting shaft gasket 7 is connected and fixed to the riveting shaft 3 by riveting, so as to play a limiting role on the rocker arm 2.

[0030] In some embodiments, asFigures 1-3 As shown, the rocker arm 2 is L-shaped. One side is connected to the push rod of the outer handle, and the other side is connected to the stroke adjustment nut 6. The riveting shaft 3 is installed in the middle of both sides of the rocker arm 2. A guide hole 21 is formed in the rocker arm 2. The rocker arm 2 is connected to the push rod of the outer handle through a pin shaft. One end of the pin shaft is installed in the guide hole 21 and can move along the guide hole 21. When rotating, the rocker arm 2 rotates around the riveting shaft 3, the push rod of the outer handle moves along the guide hole 21, and the other end of the rocker arm 2 drives the outer opening pull rod 5 to move downward through the stroke adjustment nut 6, pulling the lock body to release the locking.

[0031] In some embodiments, as Figures 1-4 shown, after the riveting shaft 3 fixes the base 1 and the rocker arm 2, due to the stepped structure, there is a 5-mm gap between the two (as Figure 4 shown). Therefore, before riveting, the riveting shaft 3 first passes through the base 1, then through the return torsion spring 4, and finally through the rocker arm 2, so as to fix the return torsion spring 4 in the 5-mm gap between the base 1 and the rocker arm 2. Then, the two legs of the return torsion spring 4 are respectively fixed on the base 1 and the rocker arm 2, thereby driving the angle change of the rocker arm 2.

[0032] In some embodiments, as Figures 1-3 shown, one end of the outer opening pull rod 5 is connected to the stroke adjustment nut 6 through its own screw structure. And because of the screw structure, the up-and-down position can be adjusted in the Z direction. Then, it is connected to the rocker arm 2 through the stroke adjustment nut 6. The other end of the outer opening pull rod 5 is connected to the lock body. Thus, when the rocker arm 2 rotates, it can move accordingly, thereby driving the lock body to complete the unlocking action.

[0033] In some embodiments, as Figure 1 shown, the stroke adjustment nut 6 is fixed on the rocker arm 2 through a split pin. One end of the stroke adjustment nut 6 is provided with a stepped shaft. Due to the structure of the stepped shaft, a degree of freedom of rotation is reserved. Then, it is screwed and fixed to the screw of the outer opening pull rod 5 through an internal thread structure, so that the rotation action of the rocker arm 2 can be transmitted to the outer opening pull rod 5 to make it move up and down.

[0034] In the second aspect of the present utility model, a mine car is provided, and the adjustable-stroke door lock outer-opening conversion mechanism described above is installed on the mine car.

[0035] Working principle:

[0036] During installation, the base 1 is passed through the door welding assembly by bolts and fixed to the outer handle. Then, the rocker arm 2 is connected to the push rod of the outer handle through a pin shaft. Finally, the outer opening pull rod 5 is connected to the lock body assembly through a buckle;

[0037] When in use, as Figure 2As shown, when the outer handle is pulled outwards, the push rod moves along the guide hole 21 of the rocker arm 2, pulling the rocker arm 2 to rotate. The rocker arm 2 rotates around the riveting shaft 3. At the same time, the other end of the rocker arm 2 drives the outer opening pull rod 5 to move downwards through the stroke adjustment nut 6, and the outer opening pull rod 5 drives the lock body to move downwards, thus completing the unlocking action;

[0038] After the unlocking is completed, release the outer handle, and the force for pulling outwards disappears. The return torsion spring 4 drives the rocker arm 2, the outer opening pull rod 5, and the stroke adjustment nut 6 to return to the initial position.

[0039] The adjustable-stroke door lock outer opening conversion mechanism of the present utility model connects the rocker arm and the outer opening pull rod through a stroke adjustment nut, so as to realize that the Z-direction up-and-down position of the outer opening pull rod can be adjusted, thus solving the problems such as insufficient opening stroke and door lock failure caused by the cumulative error during the assembly of the door lock system and the door, and improving the tolerance and reliability of the door lock system.

[0040] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means being within the protection scope of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

Claims

1. A door lock outward opening conversion mechanism with adjustable stroke, characterized in that: include: A base (1), the base (1) passing through the door welding assembly and fixed on the outer handle; A rocker arm (2), wherein the rocker arm (2) is fixed to the base (1) via a riveted shaft (3), wherein a step is provided on the riveted shaft (3), wherein the height of the step is greater than the thickness of the rocker arm (2), so as to enable the rocker arm (2) to maintain a degree of freedom of rotation after being fixed; A return torsion spring (4), wherein the return torsion spring (4) is mounted on the riveted shaft (3) and is located between the base (1) and the rocker arm (2), and two legs of the return torsion spring (4) are respectively fixed on the base (1) and the rocker arm (2); An outward-opening pull rod (5), one end of which is connected to a stroke adjustment nut (6) via its own screw structure, and the other end of which is connected to a lock body, and the stroke adjustment nut (6) is connected to a rocker arm (2).

2. The door lock outward opening conversion mechanism with adjustable stroke according to claim 1, characterized in that: The base (1) is fixed on the outer handle by means of bolts passing through the door welding assembly.

3. The door lock outward opening conversion mechanism with adjustable stroke according to claim 1, characterized in that: A riveted shaft gasket (7) for limiting the rocker arm (2) is installed on the riveted shaft (3).

4. The door lock outward opening conversion mechanism with adjustable stroke according to claim 3, characterized in that: The riveted shaft gasket (7) is riveted on the riveted shaft (3).

5. The door lock outward opening conversion mechanism with adjustable stroke according to claim 1, characterized in that: The rocker arm (2) is L-shaped, one side of which is connected to the push rod of the outer handle, and the other side of which is connected to the stroke adjustment nut (6). The riveted shaft (3) is installed in the middle of the rocker arm (2).

6. The door lock outward opening conversion mechanism with adjustable stroke according to claim 5, characterized in that: The rocker arm (2) is provided with a guide hole (21), and the rocker arm (2) is connected to the push rod of the outer handle via a pin shaft, and one end of the pin shaft is installed in the guide hole (21) and can move along the guide hole (21).

7. The door lock outward opening conversion mechanism with adjustable stroke according to claim 1, characterized in that: The stroke adjustment nut (6) is fixed on the rocker arm (2) via a cotter pin, and a stepped shaft is provided on the stroke adjustment nut (6).

8. A mining car, characterized in that: The mining car is equipped with a door lock outward opening conversion mechanism with adjustable stroke as described in any one of claims 1 to 7.

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