Vehicle door lock with dual functions

Abstract

A car door lock with dual-purpose function comprises a shell, a motor arranged in the lower part of the shell, and a screw connected to the motor, a first fixed shaft and a second fixed shaft are arranged in the upper part of the shell, the first fixed shaft is hinged with a card plate, a card slot is arranged on one side of the card plate, a pawl corresponding to the position of the card plate is hinged on the second fixed shaft, and a toggle member connected to the pawl is hinged on the second fixed shaft, a third fixed shaft is arranged in the lower part of the shell; the third fixed shaft is hinged with a transmission wheel meshed with the screw; a first hinge shaft is arranged on the front wall of the transmission wheel; a fourth fixed shaft is arranged in the middle part of the shell; the fourth fixed shaft is hinged with a first swing arm hinged with the transmission wheel; the fourth fixed shaft is hinged with a second swing arm located in front of the first swing arm. The car door lock with dual-purpose function of the present invention can quickly realize the conversion between the single-pull door opening mode and the double-pull door opening mode, realize the dual-purpose function, and effectively reduce the replacement cost.

Description

Technical Field

[0001] The invention relates to a vehicle door lock, in particular to a vehicle door lock with dual functions. Background Art

[0002] A car door lock is a device used to open or lock a car door. A lock buckle corresponding to the position of the car door lock is set on the edge of the car door frame. When the car door is closed, the lock buckle will directly slide into the lock slot of the car door lock and hit the card plate of the car door lock. At this time, the card plate will rotate. When the card plate rotates, the card plate will drive the pawl to rotate by squeezing until the pawl head is stuck in the card slot notch of the card plate. At this time, the pawl head will restrict the lock buckle in the card slot, thereby achieving a locking effect.

[0003] Due to the different usage of different vehicles, the door locks installed on different vehicles are also different. Some door locks can be opened with a single pull, while some door locks need to be pulled twice to be opened. The internal structure of the traditional double-pull door lock is substantially different from that of the single-pull door lock. Therefore, if the single-pull door opening method is to be changed to a double-pull door opening method or the double-pull door opening method is to be changed to a single-pull door opening method, the entire door lock on the door needs to be replaced to convert it into a completely different door opening method. Replacing two intact door locks not only leads to extremely high replacement costs, but also requires the door lock to be completely removed from the door for replacement, which is extremely troublesome and seriously increases the workload during replacement, resulting in extremely low replacement efficiency. Summary of the invention

[0004] The present invention aims to solve the existing technical problem of providing a vehicle door lock with a dual-use function, which can quickly realize the conversion between a single-pull door opening mode and a double-pull door opening mode, realize the dual-use function, and effectively reduce the replacement cost.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] The present invention discloses a vehicle door lock with dual-purpose function, comprising a shell, a motor arranged in the lower part of the shell and a screw connected to the motor, a first fixed shaft and a second fixed shaft are arranged in the upper part of the shell, the first fixed shaft is hinged with a card plate, a card groove is arranged on one side of the card plate, a pawl corresponding to the position of the card plate is hinged on the second fixed shaft, and a toggle piece connected to the pawl is hinged on the second fixed shaft, characterized in that: a third fixed shaft is arranged in the lower part of the shell; the third fixed shaft is hinged with a transmission wheel meshed with the screw; a first hinge shaft is arranged on the front side wall of the transmission wheel; a fourth fixed shaft is arranged in the middle part of the shell; the fourth fixed shaft is hinged with a first swing arm hinged with the transmission wheel; the fourth fixed shaft is hinged with a second swing arm located in front of the first swing arm; the second swing arm An unlocking head is provided at the upper end; a guide mechanism matching the right part of the second swing arm is provided on the first swing arm; a second hinge shaft corresponding to the position of the first hinge shaft is provided on the second swing arm; the first hinge shaft and the second hinge shaft are connected by a double-pull transmission arm; a hinge mechanism located on the left side of the toggle member is provided on the upper part of the shell; the hinge mechanism is hinged with a third swing arm, and the third swing arm and the toggle member are perpendicular to each other; a toggle arm opposite to the toggle member is provided at the left end of the third swing arm; a first waist-shaped hole matching the first swing arm is provided on the third swing arm; a fourth swing arm whose lower part matches the guide mechanism is provided on the front side of the second swing arm; a first wire drawing hole is provided in the middle of the fourth swing arm; a second wire drawing hole corresponding to the position of the first wire drawing hole is provided on the upper part of the second swing arm.

[0007] A limit head is provided at the front end of the second articulated shaft, and the diameter of the limit head is larger than the diameter of the second articulated shaft; a second waist-shaped hole matching the second articulated shaft is provided at the upper part of the double-pull transmission arm, and the width of the second waist-shaped hole is smaller than the diameter of the limit head; an axial hole matching the first articulated shaft is provided at the lower end of the double-pull transmission arm; the second articulated shaft rests on the upper hole wall of the second waist-shaped hole; an expansion groove is provided on the lower hole wall of the second waist-shaped hole, and the diameter of the expansion groove is larger than the diameter of the limit head.

[0008] A first extension arm opposite to the rear wall of the transmission wheel is provided on one side of the first swing arm; the end of the first extension arm is hinged to the rear wall of the transmission wheel via a connecting shaft.

[0009] A second extension arm tilted to the right is provided on the upper side of the right end of the first swing arm; a sliding rod matching the first waist-shaped hole is provided at the end of the second extension arm.

[0010] The guide mechanism includes a guide shaft arranged on the front side wall of the right part of the first swing arm; a limit plate is arranged in the middle of the guide shaft; a third waist-shaped hole matching the rear part of the guide shaft is arranged on the right part of the second swing arm, and the width of the third waist-shaped hole is smaller than the diameter of the limit plate; an extrusion groove is arranged on the right side hole wall of the third waist-shaped hole.

[0011] A limiting step matching the upper end of the fourth swing arm is arranged inside the left side of the upper part of the shell, and the limiting step is arc-shaped; a fourth waist-shaped hole matching the front part of the guide shaft is arranged at the lower part of the fourth swing arm; the limiting plate is located between the second swing arm and the fourth swing arm.

[0012] The fourth fixed shaft is hinged with an outward-opening door arm located between the fourth swing arm and the second swing arm; the left end of the outward-opening door arm is hinged on the fourth fixed shaft, and the right end of the outward-opening door arm is provided with a third pull wire hole; the middle part of the outward-opening door arm is provided with a transverse waist-shaped hole matching the front part of the guide shaft, and a longitudinal waist-shaped hole intersecting the transverse waist-shaped hole, and the transverse waist-shaped hole and the longitudinal waist-shaped hole are T-shaped; the outward-opening door arm is located between the fourth swing arm and the limit plate.

[0013] The hinge mechanism includes a bracket plate arranged in the upper part of the shell; a hinge plate is provided at the front end of the bracket plate, and an auxiliary part corresponding to the position of the unlocking head is provided on the left side of the front end of the bracket plate; a hinge hole matching the hinge plate is provided at the left end of the third swing arm, and the hinge hole is in an 8-shape; the thickness of the hinge plate is smaller than the width of the middle part of the hinge hole, and the width of the hinge plate is smaller than the horizontal length of the hinge hole.

[0014] An upper lubrication groove is provided on the upper part of the front wall of the double-pull transmission arm, a lower lubrication groove is provided on the lower part of the front wall of the double-pull transmission arm, and a lubrication oil channel is provided on the middle part of the front wall of the double-pull transmission arm. The upper lubrication groove is connected with the lower lubrication groove through the lubrication oil channel; the upper lubrication groove encloses the second waist-shaped hole; the lower lubrication groove encloses the shaft hole; the upper lubrication groove is connected with the upper inner wall of the second waist-shaped hole through an upper oil outlet hole; the lower lubrication groove is connected with the shaft hole through a lower oil outlet hole; the front wall of the double-pull transmission arm is covered with a sealing cover, which seals and covers the upper lubrication groove, the lower lubrication groove and the lubrication oil channel; the sealing cover is fixed to the double-pull transmission arm by screws; the upper lubrication groove, the lower lubrication groove and the lubrication oil channel are filled with solidified grease; a steel ball is placed in the middle of the lubrication oil channel.

[0015] The outer walls of the first hinge shaft and the second hinge shaft are both provided with a plurality of evenly distributed spherical embedded holes; the spherical embedded holes are provided with matching balls, one end of the balls protrudes out of the spherical embedded holes and fits with the inner wall of the shaft hole or the upper inner wall of the second waist-shaped hole.

[0016] The beneficial effects of the present invention are:

[0017] Compared with the prior art, the vehicle door lock with dual-purpose function adopting the structure of the present invention can realize the conversion between the double-pull unlocking mode and the single-pull unlocking mode through the double-pull transmission arm. When the first hinge shaft and the second hinge shaft are connected through the double-pull transmission arm, the double-pull unlocking effect can be achieved. When the first hinge shaft and the second hinge shaft are connected through the double-pull transmission arm, the first hinge shaft and the second hinge shaft do not interfere with each other. At this time, the single-pull unlocking effect can be achieved, and finally the dual-purpose function is realized. Since the single-pull unlocking mode and the double-pull unlocking mode can be quickly converted by disassembling and assembling a double-pull transmission arm, the trouble caused by replacing the entire vehicle door lock to change the unlocking mode is effectively reduced, thereby effectively improving the replacement efficiency, and when there is no need for two different vehicle door locks to replace each other, the replacement cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a vehicle door lock with dual functions according to the present invention;

[0019] Figure 2 It is a schematic structural diagram of the first angle of the vehicle door lock with dual-purpose functions of the present invention after the housing is removed;

[0020] Figure 3 is a schematic structural diagram of a second angle of the vehicle door lock with dual-purpose functions of the present invention after the housing is removed;

[0021] Figure 4 It is a structural schematic diagram of the vehicle door lock with dual functions of the present invention from a third angle after the housing is removed;

[0022] Figure 5 It is a partial exploded view of the vehicle door lock with dual functions of the present invention with the housing removed.

[0023] Figure 6 It is a schematic diagram of the structure when a lubricating oil channel is provided on the double-pull transmission arm;

[0024] Figure 7 It is a schematic diagram of the structure when the upper cover of the double-pull transmission arm is closed with a sealing cover;

[0025] Figure 8 It is a schematic diagram of the structure when a ball bearing is provided on the first hinge shaft. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] See also Figures 1 to 8The present invention provides a door lock with dual-purpose function, comprising a housing 1, a motor 2 arranged in the lower part of the housing 1 and a screw rod 3 connected to the motor 2, a first fixed shaft 4 and a second fixed shaft 5 are arranged in the upper part of the housing 1, the first fixed shaft 4 is hinged with a card plate 6, a card slot 7 is arranged on one side of the card plate 6, a pawl 8 corresponding to the position of the card plate 6 is hinged on the second fixed shaft 5, and a toggle piece 9 connected to the pawl 8 is hinged on the second fixed shaft 5, a third fixed shaft 10 is arranged in the lower part of the housing 1; the third fixed shaft 10 is hinged with a transmission wheel 11 meshing with the screw rod 3; a first hinge shaft 12 is arranged on the front side wall of the transmission wheel 11; a fourth fixed shaft 13 is arranged in the middle part of the housing 1; the fourth fixed shaft 13 is hinged with a first swing arm 14 hinged with the transmission wheel 11; the fourth fixed shaft 13 is hinged with a second swing arm 15 located in front of the first swing arm 14; the upper end of the second swing arm 15 is An unlocking head 16; the first swing arm 14 is provided with a guide mechanism matching the right part of the second swing arm 15; the second swing arm 15 is provided with a second hinge shaft 17 corresponding to the position of the first hinge shaft 12; the first hinge shaft 12 and the second hinge shaft 17 are connected by a double-pull transmission arm 18; the upper part of the shell 1 is provided with a hinge mechanism located on the left side of the toggle member 9; the hinge mechanism is hinged with a third swing arm 19, and the third swing arm 19 and the toggle member 9 are perpendicular to each other; the left end of the third swing arm 19 is provided with a toggle arm 20 opposite to the toggle member 9; the third swing arm 19 is provided with a first waist-shaped hole 21 matching the first swing arm 14; the front side of the second swing arm 15 is provided with a fourth swing arm 22 whose lower part matches the guide mechanism; the middle part of the fourth swing arm 22 is provided with a first wire drawing hole 23; the upper part of the second swing arm 15 is provided with a second wire drawing hole 24 corresponding to the position of the first wire drawing hole 23.

[0028] A limit head 25 is provided at the front end of the second hinge shaft 17, and the diameter of the limit head 25 is larger than the diameter of the second hinge shaft 17; a second waist-shaped hole 26 matching the second hinge shaft 17 is provided at the upper part of the double-pull transmission arm 18, and the width of the second waist-shaped hole 26 is smaller than the diameter of the limit head 25; an axial hole 27 matching the first hinge shaft 12 is provided at the lower end of the double-pull transmission arm 18; the second hinge shaft 17 is against the upper hole wall of the second waist-shaped hole 26; an expansion groove 28 is provided on the lower hole wall of the second waist-shaped hole 26, and the diameter of the expansion groove 28 is larger than the diameter of the limit head 25.

[0029] A first extension arm 29 opposite to the rear wall of the transmission wheel 11 is provided on one side of the first swing arm 14 ; an end of the first extension arm 29 is hinged to the rear wall of the transmission wheel 11 via a connecting shaft 30 .

[0030] A second extension arm 31 tilted to the right is disposed on the upper right end of the first swing arm 14 ; a sliding rod 32 matching the first waist-shaped hole 21 is disposed at the end of the second extension arm 31 .

[0031] The guide mechanism includes a guide shaft 33 arranged on the front side wall of the right part of the first swing arm 14; a limit plate 34 is arranged in the middle of the guide shaft 33; a third waist-shaped hole 35 matching the rear part of the guide shaft 33 is arranged on the right part of the second swing arm 15, and the width of the third waist-shaped hole 35 is smaller than the diameter of the limit plate 34; an extrusion groove 36 is arranged on the right side hole wall of the third waist-shaped hole 35.

[0032] A limiting step 37 matching the upper end of the fourth swing arm 22 is provided on the left side of the upper part of the shell 1, and the limiting step 37 is arc-shaped; a fourth waist-shaped hole 38 matching the front part of the guide shaft 33 is provided on the lower part of the fourth swing arm 22; the limiting plate 34 is located between the second swing arm 15 and the fourth swing arm 22.

[0033] The fourth fixed shaft 13 is hinged with an outward-opening door arm 39 located between the fourth swing arm 22 and the second swing arm 15; the left end of the outward-opening door arm 39 is hinged on the fourth fixed shaft 13, and the right end of the outward-opening door arm 39 is provided with a third pull wire hole 40; the middle part of the outward-opening door arm 39 is provided with a transverse waist-shaped hole 41 matching the front part of the guide shaft 33, and a longitudinal waist-shaped hole 42 intersecting the transverse waist-shaped hole 41, and the transverse waist-shaped hole 41 and the longitudinal waist-shaped hole 42 are T-shaped; the outward-opening door arm 39 is located between the fourth swing arm 22 and the limit plate 34.

[0034] The hinge mechanism includes a bracket plate 43 arranged in the upper part of the shell 1; a hinge plate 44 is provided at the front end of the bracket plate 43, and an auxiliary part 45 extending outward and corresponding to the position of the unlocking head 16 is provided on the left side of the front end of the bracket plate 43; a hinge hole 46 matching the hinge plate 44 is provided at the left end of the third swing arm 19, and the hinge hole 46 is 8-shaped; the thickness of the hinge plate 44 is less than the middle width of the hinge hole 46, and the width of the hinge plate 44 is less than the horizontal length of the hinge hole 46.

[0035] An upper lubrication groove 47 is provided on the upper part of the front wall of the double-pull transmission arm 18, a lower lubrication groove 48 is provided on the lower part of the front wall of the double-pull transmission arm 18, and a lubrication oil passage 49 is provided in the middle of the front wall of the double-pull transmission arm 18. The upper lubrication groove 47 is connected with the lower lubrication groove 48 through the lubrication oil passage 49; the upper lubrication groove 47 encloses the second waist-shaped hole 26; the lower lubrication groove 48 encloses the shaft hole 27; the upper lubrication groove 47 is connected with the upper inner part of the second waist-shaped hole 26 through an upper oil outlet hole 50. The walls are interconnected; the lower lubrication groove 48 is interconnected with the shaft hole 27 via a lower oil outlet hole 51; the front wall of the double-pull transmission arm 18 is covered with a sealing cover 52, which seals and covers the upper lubrication groove 47, the lower lubrication groove 48 and the lubrication oil channel 49; the sealing cover 52 and the double-pull transmission arm 18 are fixed by screws 53; the upper lubrication groove 47, the lower lubrication groove 48 and the lubrication oil channel 49 are filled with solidified grease; a steel ball 54 is placed in the middle of the lubrication oil channel 49.

[0036] The outer walls of the first hinge shaft 12 and the second hinge shaft 17 are both provided with a plurality of evenly distributed spherical embedding holes 55; a matching ball 56 is provided in the spherical embedding hole 55, and one end of the ball 56 protrudes out of the spherical embedding hole 55 and fits against the inner wall of the shaft hole 27 or the upper inner wall of the second waist-shaped hole 26.

[0037] The method of use of the present invention is as follows:

[0038] When the door lock needs to be locked, the motor 2 can be started. At this time, the motor 2 will drive the screw rod 3 to rotate through its own motor shaft, thereby driving the transmission wheel 11 meshed with the screw rod 3 to rotate, and the transmission wheel 11 is hinged to the first extension arm 29 of the first swing arm 14 through the connecting shaft 30. When the transmission wheel 11 rotates, the transmission wheel 11 will drive the first swing arm 14 to swing around the fourth fixed axis 13 through the first extension arm 29. When the first swing arm 14 swings, the second extension arm 31 on the first swing arm 14 swings accordingly, and a sliding rod 32 is provided at the end of the second extension arm 31. When the sliding rod 32 moves along with the second extension arm When the third swing arm 19 is swung, the slide bar 32 will slide along the first waist-shaped hole 21 on the third swing arm 19 and press downward the lower hole wall of the first waist-shaped hole 21. At this moment, the third swing arm 19 will swing toward the lower right with the hinge plate 44 as the center, and the toggle arm 20 arranged at the left end of the third swing arm 19 will swing toward the lower right accordingly. When the toggle arm 20 is displaced, the toggle arm 20 is no longer opposite to the toggle member 9. Even if the toggle arm 20 is pushed by the unlocking head 16 on the left side, it cannot press the toggle member 9. When the toggle member 9 cannot be interfered with, the pawl 8 always keeps the card plate 6 locked, thereby realizing the locked state of the door lock.

[0039] In the actual unlocking process, whether it is single-pull unlocking or double-pull unlocking, it is divided into electric-controlled unlocking and manual-pull unlocking. The electric-controlled unlocking relies on the motor 2 to unlock, while the manual-pull unlocking relies on manually pulling the fourth swing arm 22 to achieve.

[0040] When performing double-pull manual unlocking, it is necessary to keep the first hinge shaft 12 and the second hinge shaft 17 connected through the double-pull transmission arm 18, and then the pull wire in the first pull wire hole 23 fixed on the fourth swing arm 22 can be pulled for the first time. When the pull wire pulls the fourth swing arm 22, the upper end of the fourth swing arm 22 will rotate along the arc trajectory of the limit step 37, and the lower end of the fourth swing arm 22 will rotate accordingly. When the lower end of the fourth swing arm 22 rotates, the fourth waist-shaped hole 33 on the fourth swing arm 22 8 will slide along the front of the guide shaft 33. When the fourth waist-shaped hole 38 slides to a certain extent, the hole wall of the fourth waist-shaped hole 38 will squeeze the front of the guide shaft 33, and the guide shaft 33 is arranged on the first swing arm 14, and the first swing arm 14 swings accordingly. At this time, the first swing arm 14 swings around the fourth fixed axis 13 and drives the second extension arm 31 to lift up. Then, the sliding rod 32 on the end of the second extension arm 31 is lifted up and slides along the trajectory of the hole wall of the first waist-shaped hole 21. The sliding rod 32 During the sliding process, the wall of the first waist-shaped hole 21 will be squeezed downward, thereby driving the third swing arm 19 to rotate upward and reset, and the toggle arm 20 will return to a state relative to the toggle member 9. When the first swing arm 14 swings, the third waist-shaped hole 35 on the second swing arm 15 will slide along the guide shaft 33 and slide into the extrusion groove 36. When the guide shaft 33 is squeezed in the extrusion groove 36, the second swing arm 15 will swing further, and when the first swing arm swings, the first extension arm 29 of the first swing arm 14 will pass The transmission wheel 11 is driven to rotate by the connecting shaft 30, and the first hinge shaft 12 is arranged on the transmission wheel 11. The first hinge shaft 12 is connected to the second hinge shaft 17 arranged on the second swing arm 15 through the double-pull transmission arm 18. The transmission wheel 11 will assist the swing of the second swing arm 15 through the double-pull transmission arm 18, so that it swings toward the auxiliary part 45. As the second swing arm 15 swings, the unlocking head 16 at the upper end of the second swing arm 15 is in a position opposite to the auxiliary part 45. At this time, the first pulling action is completed.

[0041] Then, the second pull can be performed again through the pull wire in the first pull wire hole 23. At this moment, the second swing arm 15 will continue to drive the unlocking head 16 to approach the auxiliary part 45, and finally press on the auxiliary part 45. As the auxiliary part 45 is pushed toward the right, the auxiliary part 45 will eventually deform and bend to the right and touch the left end of the third swing arm 19, thereby pushing the third swing arm 19 to the right. Since the width of the hinge plate 44 is smaller than the horizontal length of the hinge hole 46, the third swing arm 19 can move horizontally to the right a certain distance. At this time, the third swing arm 19 drives the toggle arm 20 to hit the toggle member 9. When the toggle member 9 is hit, the toggle member 9 will drive the pawl 8 to rotate around the second fixed axis 5 as the center, thereby realizing the resetting of the pawl 8. When the pawl 8 is reset, the card plate 6 will also reset and unlock, thereby realizing the effect of double-pull unlocking.

[0042] When single-pull unlocking is required, it is only necessary to remove the double-pull transmission arm 18 from the first hinge shaft 12 and the second hinge shaft 17, and then pull the pull wire from the first pull wire hole 23 to the second pull wire hole 24. When the pull wire is pulled, the fourth swing arm 22 and the second swing arm 15 will be pulled at the same time. When the fourth swing arm 22 swings, the first swing arm 14 can finally drive the slide bar 32 on the second extension arm 31 to swing, so that the third swing arm 19 drives the toggle arm 20 to be in a position opposite to the toggle member 9. When the second swing arm 15 is directly pulled by the pull wire, there is no need for the action assistance of the double-pull transmission arm 18, which can effectively reduce one step and directly swing into place at one time. The unlocking head 16 pushes the auxiliary part 45 to the right, and finally the toggle arm 20 pushes the toggle member, and the toggle member 9 is used to complete the reset of the ratchet, thereby achieving the effect of single-pull unlocking.

[0043] In summary, the present invention can realize the conversion between the double-pull unlocking mode and the single-pull unlocking mode through the double-pull transmission arm 18. When the first hinge shaft 12 and the second hinge shaft 17 are connected through the double-pull transmission arm 18, the double-pull unlocking effect can be achieved. When the first hinge shaft 12 and the second hinge shaft 17 are connected through the double-pull transmission arm 18, the first hinge shaft 12 and the second hinge shaft 17 do not interfere with each other. At this time, the single-pull unlocking effect can be achieved, and finally the dual-use function is realized. Since the single-pull unlocking mode and the double-pull unlocking mode can be quickly converted by disassembling and assembling a double-pull transmission arm 18, the trouble caused by replacing the entire door lock to change the unlocking mode is effectively reduced, thereby effectively improving the replacement efficiency, and when there is no need for two different door locks to replace each other, the replacement cost is effectively reduced.

[0044] A limit head 25 is provided at the front end of the second articulated shaft 17, and the diameter of the limit head 25 is larger than the diameter of the second articulated shaft 17. A second waist-shaped hole 26 matching the second articulated shaft 17 is provided at the upper part of the double-pull transmission arm 18, and the width of the second waist-shaped hole 26 is smaller than the diameter of the limit head 25. An axial hole 27 matching the first articulated shaft 12 is provided at the lower end of the double-pull transmission arm 18. The second articulated shaft 17 is against the upper hole wall of the second waist-shaped hole 26, and an expansion groove 28 is provided on the lower hole wall of the second waist-shaped hole 26. The diameter of the expansion groove 28 is larger than the diameter of the limit head 25. When it is necessary to connect the first articulated shaft 12 and the second articulated shaft 17 through the double-pull transmission arm 18 , you can first hold the double-pull transmission arm 18, then align the amplification slot 28 with the limit head, and then move the double-pull transmission arm 18 to make the limit head 25 pass through the amplification slot 28, and move the limit head 25 to the front side of the double-pull transmission arm 18, and then you can pull the double-pull transmission arm 18 to make the second hinge shaft 17 slide along the trajectory of the second waist-shaped hole 26 to the upper hole wall position of the second waist-shaped hole 26. At this time, the axial hole at the lower end of the double-pull transmission arm 18 is just opposite to the first hinge shaft 12, and then the first hinge shaft 12 can be passed through the axial hole 27. When the shell 1 is closed, the inner wall of the shell 1 will effectively limit the first hinge shaft 12 from escaping from the axial hole 27.

[0045] The fourth fixed shaft 13 is hinged with an outward-opening door arm 39 located between the fourth swing arm 22 and the second swing arm 15. The left end of the outward-opening door arm 39 is hinged on the fourth fixed shaft 13, and the right end of the outward-opening door arm 39 is provided with a third pull-wire hole 40. The middle part of the outward-opening door arm 39 is provided with a transverse waist-shaped hole 41 matching the front part of the guide shaft 33, and a longitudinal waist-shaped hole 42 intersecting the transverse waist-shaped hole 41. The transverse waist-shaped hole 41 and the longitudinal waist-shaped hole 42 are in a T shape. The outward-opening door arm 39 is located between the fourth swing arm 22 and the limit plate 34. The outward-opening door arm 39 can achieve the effect of opening the door from the outside. When the door needs to be opened outward, another pull wire connected to the third pull wire hole 40 can be used to pull the outward-opening door arm 39, so that the outward-opening door arm 39 can rotate and swing around the fourth fixed axis 13. At this time, the outward-opening door arm 39 will squeeze the guide shaft 33 through the wall of the transverse waist-shaped hole 41 and the wall of the longitudinal waist-shaped hole 42, and finally realize the swing of the first swing arm 14 and the second swing arm 15, thereby realizing the resetting of the pawl 8 and completing the unlocking of the door lock.

[0046] An upper lubrication groove 47 is provided on the upper part of the front wall of the double-pull transmission arm 18, a lower lubrication groove 48 is provided on the lower part of the front wall of the double-pull transmission arm 18, and a lubrication oil passage 49 is provided on the middle part of the front wall of the double-pull transmission arm 18. The upper lubrication groove 47 is connected with the lower lubrication groove 48 through the lubrication oil passage 49. The upper lubrication groove 47 encloses the second waist-shaped hole 26, and the lower lubrication groove 48 encloses the shaft hole 27. The upper lubrication groove 47 is connected with the upper inner wall of the second waist-shaped hole 26 through the upper oil outlet hole 50, and the lower lubrication groove 48 is connected with the lower oil outlet hole 50. The hole 51 is connected with the shaft hole 27. The front wall of the double-pull transmission arm 18 is covered with a sealing cover 52. The sealing cover 52 and the double-pull transmission arm 18 are fixed by screws 53. The upper lubrication groove 47, the lower lubrication groove 48 and the lubrication oil passage 49 are filled with solidified grease. A steel ball 54 is placed in the middle of the lubrication oil passage 49. When the double-pull transmission arm 18 swings, the steel ball 54 in the lubrication oil passage 49 will roll under the influence of the swing force. The rolling steel ball 54 will affect the solidified grease filled in the lubrication oil passage 49. The grease is squeezed out. When the sealing cover seals and covers the upper lubrication groove 47, the lower lubrication groove 48 and the lubrication oil channel 49, when the steel ball 54 rolls, the solidified grease squeezed in the lubrication oil channel 49 can only flow into the upper lubrication groove 47 or the lower lubrication groove 48. At this time, the solidified grease originally in the upper lubrication groove 47 or the lower lubrication groove 48 will be pushed by the newly entered inherent grease. Finally, the solidified grease in the upper lubrication groove 47 flows to the upper inner wall of the second waist-shaped hole 26 through the upper oil outlet hole 50, and the lower lubrication groove 48 flows to the upper inner wall of the second waist-shaped hole 26 through the upper oil outlet hole 50. The solidified grease in the groove 48 will flow to the inner wall of the shaft hole 27 through the lower oil outlet hole 51. As the double-pull transmission arm 18 swings, the solidified grease on the upper inner wall of the second waist-shaped hole 26 will evenly cover the surface of the second hinge shaft 17, and the solidified grease on the inner wall of the shaft hole 27 will evenly cover the surface of the first hinge shaft 12, so that the first hinge shaft 12 and the second hinge shaft 17 are fully lubricated, effectively avoiding the double-pull transmission arm 18 from jamming when swinging, and ensuring the stability and smoothness of force transmission.

[0047] The outer walls of the first hinge shaft 12 and the second hinge shaft 17 are both provided with a plurality of evenly distributed spherical embedded holes 55, and the spherical embedded holes 55 are provided with matching balls 56. One end of the ball 56 protrudes out of the spherical embedded holes 55 and fits with the inner wall of the shaft hole 27 or the upper inner wall of the second waist-shaped hole 26. The presence of the ball 56 can effectively reduce the friction between the first hinge shaft 12 and the shaft hole 27, and the friction between the second hinge shaft 17 and the upper inner wall of the second waist-shaped hole 26, thereby effectively ensuring the smoothness of the swing of the double-pull transmission arm 18.

Claims

1. A door lock with dual functions, comprising a housing, a motor arranged in the lower part of the housing, and a screw connected to the motor, a first fixed shaft and a second fixed shaft are arranged in the upper part of the housing, the first fixed shaft is hinged with a card plate, a card slot is arranged on one side of the card plate, a ratchet corresponding to the position of the card plate is hinged on the second fixed shaft, and a toggle member connected to the ratchet is hinged on the second fixed shaft, characterized in that: A third fixed shaft is provided in the lower part of the shell; the third fixed shaft is hinged with a transmission wheel meshing with the screw rod; a first hinge shaft is provided on the front wall of the transmission wheel; a fourth fixed shaft is provided in the middle part of the shell; the fourth fixed shaft is hinged with a first swing arm hinged with the transmission wheel; the fourth fixed shaft is hinged with a second swing arm located at the front side of the first swing arm; an unlocking head is provided at the upper end of the second swing arm; a guide mechanism matching the right part of the second swing arm is provided on the first swing arm; a second hinge shaft corresponding to the position of the first hinge shaft is provided on the second swing arm; the first The hinge shaft and the second hinge shaft are connected by a double-pull transmission arm; the upper part of the shell is provided with a hinge mechanism located on the left side of the toggle member; the hinge mechanism is hinged with a third swing arm, and the third swing arm and the toggle member are perpendicular to each other; the left end of the third swing arm is provided with a toggle arm opposite to the toggle member; the third swing arm is provided with a first waist-shaped hole matching the first swing arm; the front side of the second swing arm is provided with a fourth swing arm whose lower part matches the guide mechanism; the middle part of the fourth swing arm is provided with a first wire drawing hole; the upper part of the second swing arm is provided with a second wire drawing hole corresponding to the position of the first wire drawing hole.

2. A vehicle door lock with dual functions according to claim 1, characterized in that: A limit head is provided at the front end of the second articulated shaft, and the diameter of the limit head is larger than the diameter of the second articulated shaft; a second waist-shaped hole matching the second articulated shaft is provided at the upper part of the double-pull transmission arm, and the width of the second waist-shaped hole is smaller than the diameter of the limit head; an axial hole matching the first articulated shaft is provided at the lower end of the double-pull transmission arm; the second articulated shaft rests on the upper hole wall of the second waist-shaped hole; an expansion groove is provided on the lower hole wall of the second waist-shaped hole, and the diameter of the expansion groove is larger than the diameter of the limit head.

3. A vehicle door lock with dual functions according to claim 1, characterized in that: A first extension arm opposite to the rear wall of the transmission wheel is provided on one side of the first swing arm; the end of the first extension arm is hinged to the rear wall of the transmission wheel via a connecting shaft.

4. A vehicle door lock with dual functions according to claim 3, characterized in that: A second extension arm tilted to the right is provided on the upper side of the right end of the first swing arm; a sliding rod matching the first waist-shaped hole is provided at the end of the second extension arm.

5. A vehicle door lock with dual functions according to claim 1, characterized in that: The guide mechanism includes a guide shaft arranged on the front side wall of the right part of the first swing arm; a limit plate is arranged in the middle of the guide shaft; a third waist-shaped hole matching the rear part of the guide shaft is arranged on the right part of the second swing arm, and the width of the third waist-shaped hole is smaller than the diameter of the limit plate; an extrusion groove is arranged on the right side hole wall of the third waist-shaped hole.

6. A vehicle door lock with dual functions according to claim 5, characterized in that: A limiting step matching the upper end of the fourth swing arm is arranged inside the left side of the upper part of the shell, and the limiting step is arc-shaped; a fourth waist-shaped hole matching the front part of the guide shaft is arranged at the lower part of the fourth swing arm; the limiting plate is located between the second swing arm and the fourth swing arm.

7. A vehicle door lock with dual functions according to claim 5, characterized in that: The fourth fixed shaft is hinged with an outward-opening door arm located between the fourth swing arm and the second swing arm; the left end of the outward-opening door arm is hinged on the fourth fixed shaft, and the right end of the outward-opening door arm is provided with a third pull wire hole; the middle part of the outward-opening door arm is provided with a transverse waist-shaped hole matching the front part of the guide shaft, and a longitudinal waist-shaped hole intersecting the transverse waist-shaped hole, and the transverse waist-shaped hole and the longitudinal waist-shaped hole are T-shaped; the outward-opening door arm is located between the fourth swing arm and the limit plate.

8. The vehicle door lock with dual functions according to claim 1, characterized in that: The hinge mechanism includes a bracket plate arranged in the upper part of the shell; a hinge plate is provided at the front end of the bracket plate, and an auxiliary part corresponding to the position of the unlocking head is provided on the left side of the front end of the bracket plate; a hinge hole matching the hinge plate is provided at the left end of the third swing arm, and the hinge hole is in an 8-shape; the thickness of the hinge plate is smaller than the width of the middle part of the hinge hole, and the width of the hinge plate is smaller than the horizontal length of the hinge hole.

9. A vehicle door lock with dual functions according to claim 2, characterized in that: An upper lubrication groove is provided on the upper part of the front wall of the double-pull transmission arm, a lower lubrication groove is provided on the lower part of the front wall of the double-pull transmission arm, and a lubrication oil channel is provided on the middle part of the front wall of the double-pull transmission arm. The upper lubrication groove is connected with the lower lubrication groove through the lubrication oil channel; the upper lubrication groove encloses the second waist-shaped hole; the lower lubrication groove encloses the shaft hole; the upper lubrication groove is connected with the upper inner wall of the second waist-shaped hole through an upper oil outlet hole; the lower lubrication groove is connected with the shaft hole through a lower oil outlet hole; the front wall of the double-pull transmission arm is covered with a sealing cover, which seals and covers the upper lubrication groove, the lower lubrication groove and the lubrication oil channel; the sealing cover is fixed to the double-pull transmission arm by screws; the upper lubrication groove, the lower lubrication groove and the lubrication oil channel are filled with solidified grease; a steel ball is placed in the middle of the lubrication oil channel.

10. A vehicle door lock with dual functions according to claim 2, characterized in that: The outer walls of the first hinge shaft and the second hinge shaft are both provided with a plurality of evenly distributed spherical embedded holes; the spherical embedded holes are provided with matching balls, one end of the balls protrudes out of the spherical embedded holes and fits with the inner wall of the shaft hole or the upper inner wall of the second waist-shaped hole.

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