CN210858328U

CN210858328U - Automobile fastener

Info

Publication number: CN210858328U
Application number: CN201920955644.4U
Authority: CN
Inventors: 严岳楠
Original assignee: Shaoxing Shangyu Wancheng Auto Parts Co ltd
Current assignee: Shaoxing Shangyu Wancheng Auto Parts Co ltd
Priority date: 2019-06-24
Filing date: 2019-06-24
Publication date: 2020-06-26
Anticipated expiration: 2029-06-24

Abstract

The utility model discloses an automobile fastener, the fastener includes the connecting rod, casing and be located the casing motor, worm and worm wheel, be provided with the worm on the output shaft of motor, the worm wheel rotates and sets up in the casing, worm wheel and worm meshing transmission, the worm wheel side is rotated with the one end of connecting rod and is connected, the fixed at least three contact that is provided with on the casing, the worm wheel bottom is provided with the elastic conducting strip, the elastic end laminating casing of elastic conducting strip, when the worm wheel switches to the unblock position from the block position, the elastic conducting strip contacts with one of them contact all the time, the elastic conducting strip contacts and switches with one of them contact of two other contacts. The structure saves the installation space of the microswitch, simplifies the structure, saves the cost, improves the assembly efficiency, greatly reduces the whole volume, greatly reduces the failure probability of the parts due to the simple structure and few parts, and prolongs the service life.

Description

Automobile fastener

Technical Field

The utility model belongs to the technical field of the fastener for the car, specifically a car fastener.

Background

The automobile central lock generally comprises a lock block assembly and a fastener, wherein the lock block assembly comprises a main body piece, the front side of the main body piece is provided with a groove matched with a vehicle door buckle ring, two sides of the groove are respectively and rotatably provided with a lock block and a buckle block, rotating shafts of the lock block and the buckle block are respectively provided with a reset torsion spring, the lock block can be clamped by the buckle block and cannot be reset after being stirred by the vehicle door buckle ring, a door is locked, the lock block can be unlocked through the rotating shaft of the buckle block, the lock block can be reset under the action of the torsion spring so as to open the door, and the lock block assembly has a locked state that the door cannot be opened when the door is pulled and an unlocked state that the door can be opened when the door is pulled; the back of the main body part is provided with a shifting piece on a rotating shaft of the buckling block, the bending block used for connecting a door handle is rotatably connected to the back of the main body part, the bending block is pulled to drive the rotating arm to rotate when the door handle is pulled, the middle part of the rotating arm is rotatably connected to the back of the main body part and is provided with a torsional spring for resetting, the rotating arm is rotatably connected with an unlocking push block, the unlocking push block is provided with a guide hole, the back of the main body part is also rotatably provided with a switching arm, the switching arm is provided with a guide block which slides in the guide hole, the switching arm can drive the unlocking push block to rotate when rotating to two limit positions, so that the unlocking push block can be switched between a locking position and an unlocking position, when the unlocking push block is at the locking position, when the door handle is pulled to drive the unlocking push block to move upwards, a notch of; when the unlocking push block is in the unlocking position and the door handle is pulled to drive the unlocking push block to move upwards, the unlocking push block can push the shifting piece to move; the locking device is a device for electrically operating a mechanical lock block component, and the locking device also needs to provide a signal for the automobile that the lock block component is in a locking state or an unlocking state, and the locking device is generally realized by matching a micro switch with a complex touch structure in the prior art.

For example, CN103114777B discloses a microswitch type central control door lock fastener for automobiles and a production process thereof, wherein the central control door lock fastener comprises a shaft snap spring, a fastener action output swing rod, a sealing ring, a reset torsion spring, a worm wheel, a locking buffer pad, a fastener output shaft, a sector gear, an unlocking buffer block, a driving cam block, a worm wheel rotating shaft, a fastener lower shell, a motor electrode, a microswitch binding post, a microswitch part, a motor, a pinion, a worm and a fastener upper shell; the output shaft of the fastener and the driving cam block adopt integral injection molding to ensure stable size, an integral injection molding part is arranged into a sector gear, an upper shell of the fastener, a sealing ring and a motion output swing rod of the fastener, after the integral injection molding part is clamped by a shaft clamp spring, a reset torsion spring, a worm wheel, a locking buffer pad and an unlocking buffer block are assembled at the corresponding position of the upper shell of the fastener, and the worm wheel is in a natural state, namely the reset torsion spring has no compression phenomenon; a motor provided with a worm is arranged in the lower shell of the sealed fastener, the motor is reliably contacted with the electrode of the motor, and a worm gear rotating shaft and a pinion are arranged; before the upper and lower shells which are respectively assembled are integrally assembled, the position of the sector gear is adjusted to enable the meshing point of the sector gear and the worm gear to be in the middle position of the sector gear, then the upper and lower shells are folded, and the upper and lower shells are welded into a whole; the micro switch part comprises a micro switch contact, a micro switch, an unlocking signal control line, a locking signal control line, a common ground wire, a locking action positive terminal and an unlocking action positive terminal; and the terminals of the micro switch are respectively connected with an unlocking signal control line, a locking signal control line, a common ground wire, a locking action positive terminal and an unlocking action positive terminal.

Fig. 5 of the background document shows that the locking device triggers the micro switch to transmit an electrical signal through a complex structure, so as to determine whether the door lock is in a locked state or an unlocked state. The fastener has the advantages of complex structure, large volume, high manufacturing cost, high failure probability and short service life due to numerous parts.

Disclosure of Invention

The utility model discloses it is not enough to prior art, provide an automobile fastener, this kind of automobile fastener simple structure is compact, low in manufacturing cost, and the packaging efficiency improves, and whole volume reduces greatly to because its simple structure part is few, the probability greatly reduced that the part breaks down also, life obtains the extension.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve: the automobile locking device comprises a connecting rod, a shell, a motor, a worm and a worm wheel, wherein the motor, the worm and the worm wheel are positioned in the shell, the worm is arranged on an output shaft of the motor, the worm wheel is rotatably arranged in the shell, the worm wheel is in meshed transmission with the worm, the side face of the worm wheel is rotatably connected with one end of the connecting rod, at least three contact pieces are fixedly arranged on the shell, an elastic conducting strip is arranged at the bottom of the worm wheel, the elastic end of the elastic conducting strip is attached to the shell, when the worm wheel is switched from a locking position to an unlocking position, the elastic conducting strip is always in contact with one of the contact pieces, and the elastic conducting strip is in contact with one of the other two. The structure installs the switching device of the electric signal on the worm wheel and the shell, when the worm wheel is switched from the locking position to the unlocking position, the conducting circuit of the elastic conducting strip and the three contact pieces is changed, so that different electric signals are transmitted, the structure saves the installation space of the micro switch, the structure is simplified, the cost is saved, the assembly efficiency is improved, the whole volume is greatly reduced, and because the structure is simple, the parts are fewer, the probability of the parts breaking down is also greatly reduced, and the service life is prolonged.

In the above technical solution, preferably, the housing includes an upper housing and a lower housing, and the upper housing and the lower housing are fastened by a buckle. Adopt this buckle to connect and make the casing equipment convenient, direct lock can.

In the above technical scheme, preferably, the lower shell is provided with a first limiting protrusion, the bottom of the worm wheel is provided with two second limiting protrusions, and the first limiting protrusion is located between the two second limiting protrusions. Adopt this structure to make first spacing arch can carry on spacingly to worm wheel pivoted angle, guarantee that the worm wheel can only rotate at blocking position and unblock position, guarantee can be accurate when motor drive worm wheel switch the worm wheel between blocking position and unblock position.

In the above technical scheme, preferably, the first limiting protrusion is sleeved with an elastic ring. Set up the elastic ring and be used for eliminating the clearance that leads to by machining error, guarantee that the worm wheel when shutting position and unblock position, the spacing arch of second can both push up and lean on the elastic ring to can eliminate the noise that produces because of the collision when switching.

Among the above-mentioned technical scheme, it is specific, fixedly on the lower casing be provided with first contact, second contact and third contact, first contact is including winding first convex contact piece portion and the first wiring extension that the rotation center of worm wheel set up, the second contact includes second contact portion and second wiring extension, the third contact includes third contact portion and third wiring extension, the elasticity conducting strip includes two elasticity contact feet, when the worm wheel switches from the blocking position to unblock position, one of them elasticity contact foot all the time with laminating of first convex contact piece portion, another elasticity contact foot from contacting with second contact piece portion to contacting with third contact piece portion.

Compared with the prior art, the utility model, following beneficial effect has: the structure installs the switching device of the electric signal on the worm wheel and the shell, when the worm wheel is switched from the locking position to the unlocking position, the conducting circuit of the elastic conducting strip and the three contact pieces is changed, so that different electric signals are transmitted, the structure saves the installation space of the micro switch, the structure is simplified, the cost is saved, the assembly efficiency is improved, the whole volume is greatly reduced, and because the structure is simple, the parts are fewer, the probability of the parts breaking down is also greatly reduced, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural view of the front side of the lock according to the embodiment of the present invention.

Fig. 2 is a schematic structural view of the back surface of the lock in the locked state according to the embodiment of the present invention.

Fig. 3 is an exploded schematic view of the locking device according to the embodiment of the present invention.

Fig. 4 is a schematic view of a transmission structure of the locking device according to an embodiment of the present invention.

Fig. 5 is a schematic view of the matching structure of the elastic conductive sheet and the contact sheet according to the embodiment of the present invention.

Detailed Description

The invention will be described in further detail with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 5, an automobile central lock comprises a lock block assembly 1 and an automobile locking device 2, wherein the lock block assembly 1 comprises a main body 11, a groove 110 matched with a vehicle door buckle ring is formed in the front of the main body 11, a locking block 111 and a buckling block are respectively and rotatably arranged on two sides of the groove 110, and reset torsion springs are respectively arranged on rotating shafts of the locking block 111 and the buckling block; the back of the main body part 11 is provided with a bending block 13, a rotating arm 14, an unlocking push block 15 and a switching arm 12, a shifting piece 16 is arranged on a rotating shaft of the buckling block, the middle part of the bending block 13 is rotatably connected to the back of the main body part 11, the middle part of the rotating arm 14 is rotatably connected to the back of the main body part 11, a reset torsion spring is arranged on the rotating shaft of the rotating arm 14, the bending block 13 is pulled to shift one end of the rotating arm 14, the other end of the rotating arm 14 is rotatably connected with one end of the unlocking push block 15, the other end of the unlocking push block 15 is provided with a guide hole 151, an extending block 152 for pushing the shifting piece 16 extends from the unlocking push block 15, a concave part 153 is arranged between the extending block 152 and the unlocking push block 15, the switching arm 12 is rotatably connected to the back of the.

The latch 2 is connected to the side of the main body 11 opposite to the switching arm 12, the latch 2 includes a connecting rod 21, a housing 22, and a motor 23, a worm 24 and a worm wheel 25 which are located in the housing 22, the worm 24 is arranged on the output shaft of the motor 23, the worm wheel 25 is rotatably arranged in the housing 22, the worm wheel 25 is in meshing transmission with the worm 24, the side surface of the worm wheel 25 is rotatably connected with one end of the connecting rod 21, the other end of the connecting rod 21 is rotatably connected to the switching arm 12, specifically, in the preferred embodiment, the worm wheel 25 is provided with a first cylinder 252, the first cylinder 252 is arranged near the edge of the worm wheel 25, one end of the connecting rod 21 is provided with a circular hole 211, the first cylinder 252 penetrates through the circular hole 211, one end of the switching arm 12 connected with the connecting rod 21 is provided with a second cylinder 121, the top of the second cylinder 121 extends to, extension holes 213 matched with the limiting blocks 122 are formed in two sides of the waist hole 212, one end of the connecting rod 21 is sleeved on the top of the second cylinder 121 and then is connected with the first cylinder 252 in a rotating mode, and the limiting blocks 122 are always staggered with the extension holes 213 in the process that the connecting rod 21 pushes and pulls the switching arm 12.

The housing 22 includes an upper housing 22a and a lower housing 22b, the upper housing 22a and the lower housing 22b are fastened by a buckle 221, and the main body 11 and the housing 22 are fixedly connected by a screw.

The lower shell 22b is provided with a first limiting protrusion 222, the bottom of the worm wheel 25 is provided with two second limiting protrusions 251, the first limiting protrusion 222 is located between the two second limiting protrusions 251, and the first limiting protrusion 222 is sleeved with an elastic ring 26. Adopt this structure to make first spacing arch can carry on spacingly to worm wheel pivoted angle, guarantee that the worm wheel can only rotate at blocking position and unblock position, guarantee can be accurate when motor drive worm wheel switch the worm wheel between blocking position and unblock position, set up the clearance that the elastic ring is used for eliminating by machining error and leads to, guarantee the worm wheel when blocking position and unblock position, the spacing arch of second can both push up and lean on the elastic ring to can eliminate the noise that produces because of the collision when switching.

At least three contact pieces 27 are fixedly arranged on the lower shell 22b, the bottom of the worm wheel 25 is provided with an elastic conductive piece 28, the elastic end of the elastic conductive piece 28 is attached to the lower shell 22b, when the worm wheel 25 is switched from the locking position to the unlocking position, the elastic conductive piece 28 is always in contact with one contact piece 27, the elastic conductive piece 28 is in contact with and switched from one of the other two contact pieces 27, as a preferred embodiment, in the embodiment, the lower shell 22b is fixedly provided with a first contact piece 271, a second contact piece 272 and a third contact piece 273, the first contact piece 271 comprises a first arc contact piece portion 2711 and a first wiring extension portion 2712 which are arranged around the rotation center of the worm wheel 25, the second contact piece 272 comprises a second contact piece portion 2721 and a second wiring extension portion 2722, the third contact piece 273 comprises a third contact piece portion 2731 and a third wiring extension portion 2732, the elastic conductive piece 28 comprises two elastic contact pins 281, when the worm wheel 25 is switched from the locked position to the unlocked position, one of the elastic contact legs 281 is always in contact with the first circular arc-shaped contact piece portion 2711, and the other elastic contact leg 281 is in contact with the third contact piece portion 2731 from the contact with the second contact piece portion 2721. When the worm wheel 25 is located at the locking position, the elastic conductive sheet 28 conducts the first contact plate 271 with the second contact plate 272 to transmit one electric signal, and when the worm wheel 25 is located at the unlocking position, the elastic conductive sheet 28 conducts the first contact plate 271 with the third contact plate 273 to transmit another electric signal, and the electric signals are connected with each wiring extension part through wires and transmitted to the electric signal when the current door of the automobile is located at the locking position or the unlocking position. The structure installs the switching device of the electric signal on the worm wheel and the shell, when the worm wheel is switched from the locking position to the unlocking position, the circuit of the elastic conducting strip and the three contact pieces is changed, so that different electric signals are transmitted, the structure saves the installation space of the microswitch, simplifies the structure and saves the cost.

According to the central control lock, the fastener 2 is directly connected to one side, opposite to the switching arm 12, of the main body part 11 of the lock block component 1, the fastener 2 is connected with the lock block component 1 into a whole, and the connecting rod 21 is directly driven by the worm gear 25 to push or pull the switching arm 12, so that the structure is simpler and more compact, the assembly efficiency is improved, the size is greatly reduced, the manufacturing cost is reduced, and the probability of part failure is greatly reduced due to the simple structure and few parts, and the service life is prolonged. In the present embodiment, the worm gear 25 is rotated by the motor, and the link 21 pushes or pulls the switch arm 12 during the rotation, so that the unlocking push block 15 is rotated when the switch arm rotates 12, and the extension block 152 or the concave portion 153 of the unlocking push block 15 is aligned with the dial 16. When the extending block 152 is aligned with the poking piece 16, the extending block 152 is in an unlocking state, the unlocking push block 15 can be driven to ascend through the rotation of the bending block 13, the extending block 152 can push the poking piece 16 to rotate, so that the door catch ring is separated from the lock of the locking block, and the door can be opened; when the concave portion 153 is aligned with the pull tab 16, the unlocking push block 15 is driven to ascend by the rotation of the bending block 13, and the concave portion 153 cannot drive the pull tab 16 to rotate, so that the door cannot be opened.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An automotive latch, characterized by: the fastener (2) comprises a connecting rod (21), a shell (22), and a motor (23), a worm (24) and a worm wheel (25) which are positioned in the shell (22), wherein the worm (24) is arranged on an output shaft of the motor (23), the worm wheel (25) is rotatably arranged in the shell (22), the worm wheel (25) is in meshing transmission with the worm (24), the side surface of the worm wheel (25) is rotatably connected with one end of the connecting rod (21), at least three contact pieces (27) are fixedly arranged on the shell (22), an elastic conductive piece (28) is arranged at the bottom of the worm wheel (25), the elastic end of the elastic conductive piece (28) is attached to the shell (22), and when the worm wheel (25) is switched from a locking position to an unlocking position, the elastic conductive piece (28) is always in contact with one of the contact pieces (27), the elastic conducting sheet (28) is contacted with one of the other two contact sheets (27) and switched.

2. A vehicle latch as claimed in claim 1, wherein: the shell (22) comprises an upper shell (22 a) and a lower shell (22 b), and the upper shell (22 a) and the lower shell (22 b) are buckled through a buckle (221).

3. A vehicle latch as claimed in claim 2, wherein: the lower shell (22 b) is provided with a first limiting protrusion (222), the bottom of the worm wheel (25) is provided with two second limiting protrusions (251), and the first limiting protrusion (222) is located between the two second limiting protrusions (251).

4. A vehicle latch as claimed in claim 3, wherein: the first limiting bulge (222) is sleeved with an elastic ring (26).

5. A vehicle latch as claimed in claim 2, wherein: a first contact piece (271), a second contact piece (272) and a third contact piece (273) are fixedly arranged on the lower shell (22 b), the first contact piece (271) includes a first circular arc-shaped contact piece portion (2711) provided around a rotation center of the worm wheel (25) and a first wire extending portion (2712), the second contact piece (272) comprises a second contact piece part (2721) and a second wiring extending part (2722), the third contact (273) includes a third contact portion (2731) and a third wire extension (2732), the elastic conductive sheet (28) comprises two elastic contact feet (281), when the worm wheel (25) is switched from the locking position to the unlocking position, one elastic contact foot (281) is always attached to the first arc-shaped contact piece part (2711), and the other elastic contact foot (281) is contacted with the third contact piece part (2731) from the contact with the second contact piece part (2721).