TWM474668U - Sway-type drive mechanism for central lock of automobile - Google Patents

Description

Rocking drive mechanism for car central locking

This creation is related to the central locking of a car, especially a rocking drive mechanism for a central locking of a car.

At present, the control of the door lock of the automobile mainly controls the opening or closing of other doors by a central locking to improve the safety and convenience of the driver and the passenger. As far as the existing central locking is concerned, it can be roughly divided into two types: push-pull type and swing type. The biggest difference between the two is that the push-pull central locking is to use a pull-pull push-pull action to drive the door mechanical lock to lock and unlock. The swing type central control lock uses a single swing arm yaw action to drive the door mechanical lock to lock and unlock, because the swing type central control lock has a smaller volume and a lower failure rate than the push-pull central lock. It has many advantages, such as easy installation, so it has gradually become the standard equipment of major automakers.

U.S. Patent No. 5,441,315 discloses a "electric drive mechanism for a central locking of a vehicle" which is rotated by a motor drive input gear, and then the input gear drives the support of the biasing device to deflect. One of the transmission gears of the biasing device is engaged with the output gear to drive the output gear to rotate, and the output gear rotates to rotate the threaded shaft to rotate the shaft to drive the nut along the axial direction of the threaded shaft. When the nut starts to move, it will drive the swing arm to deflect, so that the swing arm drives the door mechanical lock to lock and unlock during the deflection process. However, in view of the structure of this patent case, the motor must be driven by the biasing device after starting up. The rotation of the moving thread shaft, in addition to increasing the complexity of the structure, may also affect the transmission effect between each other due to the error of the installation. In addition, the circular protrusion and the U-shaped groove are used between the nut and the swing arm. The cooperation between the two is to achieve the transmission effect. However, this structural configuration is easily affected by manufacturing or assembly errors, resulting in an inaccurate movement of the swing arm. In other words, this conventional patent case has the problems of complicated structure, difficulty in installation, and high failure rate.

The main purpose of the present invention is to provide a rocking type driving mechanism for a central locking of an automobile, which has the characteristics of simple structure, convenient installation and accurate operation.

In order to achieve the foregoing object, the swing drive mechanism of the present invention comprises a housing, a drive unit, a transmission unit, and a swing unit. The housing has two opposite inner rail portions; the driving unit is disposed in the housing and has a motor; the transmission unit is disposed in the housing and has a screw shaft and a transmission seat, and the one end of the screw shaft is connected to the housing a motor, the transmission seat is displaceably disposed between the slide rails of the housing and screwed to the screw shaft, and has a transmission tooth portion, so that the screw shaft can be driven by the motor to drive the transmission base Moving; the oscillating unit has a sector gear and at least one swing arm pivotally disposed on the housing and having a tooth surface for engaging a transmission tooth portion of the transmission seat, the swing arm being located outside the housing The sector gear is connected at one end thereof, so that the sector gear is deflected by the transmission tooth portion during the movement of the transmission seat, and the swing arm is further driven to an unlocked position and a state during the deflection process. Swing between lock positions.

In an embodiment of the present invention, a slight opening is provided in the housing. Off, the micro switch is electrically connected to the motor by a control module. When one of the transmission blocks triggers the push block to push a trigger rod of the micro switch, the micro switch transmits a signal to a control module. The control module is caused to control the motor to stop running.

In an embodiment of the present invention, the two opposite outer sides of the transmission seat respectively have an outer rail portion, and the inner rail portion of the housing and the outer rail portion of the transmission seat are engaged with each other for lifting the The stability of the drive seat when moving.

In an embodiment of the present invention, the outer periphery of the housing has a ridge-shaped protrusion and an arc-shaped recess adjacent to the ridge-shaped protrusion, the sector gear has a shaft portion, and the shaft portion of the sector gear is pivotally a ridge-shaped protrusion disposed on the housing and coupled to the swing arm by a connecting member, the axis of the connecting member coaxially corresponding to the center of the arcuate recess for increasing the swing angle of the swing arm Improve the accuracy of the action.

10,12‧‧‧Swing drive mechanism

20‧‧‧shell

21‧‧‧ ridged convex

22‧‧‧ curved recess

23‧‧‧Inside rail section

24‧‧‧Extension

25‧‧‧ guiding slot

30‧‧‧Drive unit

32‧‧‧Motor

322‧‧‧ shaft

34‧‧‧ drive gear

40‧‧‧Transmission unit

41‧‧‧Transmission gear

42‧‧‧ Screw shaft

43‧‧‧Drive seat

44‧‧‧ Drive tooth

45‧‧‧Outer rail section

46‧‧‧Guidance

47‧‧‧triggered push block

50‧‧‧Swing unit

51‧‧‧ sector gear

512‧‧‧Axis

514‧‧‧ tooth surface

P‧‧‧ bisector

52‧‧‧ swing arm

A‧‧‧ axis

53‧‧‧Connecting parts

P1‧‧‧Unlocked position

P2‧‧‧Lock position

60‧‧‧ micro switch

62‧‧‧Trigger rod

70‧‧‧Control Module

Fig. 1 is a perspective view showing the appearance of the first embodiment of the creation.

Fig. 2 is an internal perspective view of the first embodiment of the creation.

Figure 3 is a side cross-sectional view showing the first embodiment of the creation.

Fig. 4 is a partial front elevational view of the first embodiment of the creation, mainly showing the state in which the swing arm is in the unlocked position.

Figure 5 is similar to Figure 4 and mainly shows the state in which the swing arm is in the locked position.

Fig. 6 is a partial front elevational view of the first embodiment of the creation, mainly showing the relationship between the sector gear and the swing arm.

Figure 7 is a block diagram of the first embodiment of the creation, mainly showing a micro-motion The relationship between the switch, the control module and the motor.

Figure 8 is a partial front elevational view of the second embodiment of the present invention, mainly showing the state in which the swing arm is in the unlocked position.

Figure 9 is similar to Figure 8, which mainly shows the state in which the swing arm is in the locked position.

Referring to Figures 1 and 2, the swing drive mechanism 10 of the present invention includes a housing 20, a drive unit 30, a transmission unit 40, and a swing unit 50.

The outer periphery of the housing 20 has two adjacent ridge-shaped convex portions 21 and two opposite curved concave portions 22, and the two ridge-shaped convex portions 21 are located between the two curved concave portions 22 such that the ridge-shaped convex portions 21 and the arc The concave portions 22 are disposed to be adjacent to each other inside and outside. In addition, as shown in FIG. 3, the inner wall surface of the housing 20 has two opposite inner rail portions 23 and two opposite extending portions 24, wherein a guiding groove 25 is formed between the two extending portions 24 for guiding. The extending direction of the groove 25 and the extending direction of the inner rail portion 23 are parallel to each other.

As shown in FIGS. 2 and 4, the driving unit 30 is disposed in the housing 20 and has a motor 32 and a driving gear 34. The motor 32 has a rotating shaft 322 for the driving gear 34 to be sleeved and fixed, so that the driving gear 34 is driven. It can be rotated by the driving of the rotating shaft 322 of the motor 32.

As shown in FIGS. 2 and 4, the transmission unit 40 is disposed in the housing 20 and has a transmission gear 41, a screw shaft 42 and a transmission seat 43. The transmission gear 41 meshes with the driving gear 34 of the driving unit 30, so that the transmission gear 41 can be rotated by the driving gear 34; one end of the screw shaft 42 is connected to the transmission gear 41, so that the screw shaft 42 can rotate synchronously with the transmission gear 41, and Screw shaft The axial direction of 42 is parallel to the axial direction of the rotating shaft 322 of the motor 32; the transmission base 43 is screwed to the screw shaft 42 so that the transmission base 43 can be driven by the screw shaft 42 to move along the axial direction of the screw shaft 42. Moreover, the transmission seat 43 is preferably selected in the shape of a rectangular body to avoid rotation with the screw shaft 42 during the movement. Further, as shown in FIG. 3, the left and right outer sides of the transmission base 43 respectively have An outer rail portion 45 is configured to engage with the inner rail portion 23 of the housing 20, and the bottom surface of the transmission base 43 has a guiding portion 46 for being embedded in the guiding slot 25 of the housing 20. The transmission seat 43 has good stability when moving. In addition, the top cover of the transmission seat 43 has a transmission tooth portion 44 and a trigger push block 47 adjacent to the transmission tooth portion 44, wherein the transmission tooth portion 44 can be driven The seat 43 is integrally formed, and can also be formed by the fixing of a rack, wherein the manner of adding the rack is the best choice.

In order to accurately control the running stroke of the motor 32, a micro switch 60 can be mounted in the housing 20. As shown in FIGS. 2 and 4, the micro switch 60 is electrically connected to a control module 70 and has a trigger lever 62. The control module 70 reconnects the motor 32, whereby when the trigger block 47 of the transmission seat 43 pushes the trigger lever 62 of the micro switch 60 as the transmission seat 43 moves, the micro switch 60 transmits a signal to the control mode. Group 70 causes control module 70 to immediately control motor 32 to cease operation based on the received signal, as shown in FIG.

As shown in Figures 1, 2 and 4, the oscillating unit 50 has a sector gear 51 and two opposite swing arms 52. The sector gear 51 is located in the housing 20 and has a tooth surface 514 for engaging the transmission tooth portion 44 of the transmission unit 40. Further, as shown in FIG. 3, the sector gear 51 has a shaft portion 512 for pivoting the housing. The ridge-shaped convex portion 21 of the body 20 enables the sector gear 51 to be received by the transmission tooth portion 44 The swing arm 52 is located outside the housing 20, and one of the swing arms 52 is fixedly connected to a door mechanical lock (not shown), and the other end of the swing arm 52 is fixedly connected to a door handle (Fig. The other ends of the two swing arms 52 are respectively fixedly coupled to the shaft portion 512 of the sector gear 51 by a connecting member 53. The axis of each connecting member 53 coaxially corresponds to the center of the arcuate recess 22 of the housing 20. As shown in FIGS. 1 and 4, in addition, each of the swing arms 52 extends from the connecting member 53 in an direction away from the sector gear 51 along an axis A, and the direction in which the axis A extends is halved by the tooth surface 514 of the sector gear 51. Point P, as shown in Figure 6. Thereby, each swing arm 52 cooperates with the deflection of the sector gear 51 to jointly drive the mechanical door lock and the door handle between an unlocked position P1 and a locked position P2 to improve safety and convenience in use.

Referring to Figures 4 and 5, when the motor 32 is started in the forward rotation mode, the drive gear 34 will drive the transmission gear 41 to rotate, and then the transmission gear 41 will drive the screw shaft 42 to rotate in place, and the transmission seat 43 will be rotated. Advancing along the axial direction of the screw shaft 42, during the advancement of the transmission seat 43, the sector gear 51 is driven by the transmission tooth portion 44 of the transmission base 43 to deflect the swing arms 52 in the direction of the locking position P2. Once the trigger block 47 of the transmission seat 43 pushes the trigger lever 62 of the micro switch 60, the control module 70 immediately controls the motor 32 to stop according to the signal sent by the micro switch 60 to avoid the overrun of the motor 32. At this time, each swing arm 52 will stay at the locked position P2, so that the door mechanical lock and the door handle jointly complete the locking operation. On the contrary, when the motor 32 is started in the reverse mode, the driving gear 34 drives the screw shaft 42 to rotate in the opposite direction through the transmission gear 41, so that the transmission seat 43 retreats along the axial direction of the screw shaft 42 to retreat in the transmission seat 43. In the middle, the sector gear 51 is also subject to The driving of the driving tooth portion 44 of the transmission base 43 causes the swing arms 52 to deflect in the direction of the unlocking position P1. When the swing arms 52 are deflected to the unlocking position P1, the motor 32 automatically stops according to its own stroke setting. The operation makes the door mechanical lock and the door handle together complete the unlocking action.

As can be seen from the above, the swing drive mechanism 10 of the present invention utilizes the direct engagement between the drive gear 34 and the drive gear 41 to drive the screw shaft 42 to rotate, and is additionally fixed to the drive seat 43 during the rotation of the screw shaft 42. The direct engagement between the drive tooth portion 44 and the sector gear 51 causes the swing arm 52 to be deflected between the locked position P2 and the unlocked position P1. Compared with the conventional patent case, the present invention not only effectively simplifies the overall structure. The configuration increases the convenience of installation, and is more accurate in operation and has better smoothness and lower failure rate. In addition, the pivot point of the swing arm 52 provided by the present invention (that is, the position of the connecting member 53) is located outside the housing 20 and is coaxially arranged with the center of the arcuate recess 22 of the housing 20, plus a fan shape. The gear 51 and the swing arm 52 are disposed 180 degrees centering on the connecting member 53 , and the housing 20 of the present invention is compared with the conventional patent case in which the pivot point of the swing arm is disposed in the housing. The size can be appropriately reduced to achieve a light weight effect, and the swing arm 52 of the present invention can generate a larger swing angle to effectively improve the accuracy of the actuation. Therefore, the swing drive mechanism 10 of the present invention can achieve the purpose of simple structure, convenient installation, and accurate operation.

On the other hand, the structure of the present invention can be varied. As shown in Figures 8 and 9, the swing drive mechanism 12 of the second embodiment of the present invention is the main difference between the present embodiment and the above embodiment in that the drive is omitted. The gear 34 and the transmission gear 41 are designed such that the shaft 322 of the motor 32 is directly coupled to the screw shaft 42. connection. Thereby, when the motor 32 is started, the screw shaft 42 is directly driven by the motor 32 to rotate in place, so that the transmission seat 43 moves back and forth along the axial direction of the screw shaft 42, and then the transmission seat 43 moves forward and backward. Through the engagement relationship with the sector gear 51, the swing arm 52 is deflected between the locking position P2 and the unlocking position P1. Such a configuration can also achieve the same effect as the above embodiment.

10‧‧‧Swing type drive mechanism

20‧‧‧shell

30‧‧‧Drive unit

32‧‧‧Motor

34‧‧‧ drive gear

40‧‧‧Transmission unit

41‧‧‧Transmission gear

42‧‧‧ Screw shaft

43‧‧‧Drive seat

44‧‧‧ Drive tooth

47‧‧‧triggered push block

50‧‧‧Swing unit

51‧‧‧ sector gear

514‧‧‧ tooth surface

52‧‧‧ swing arm

53‧‧‧Connecting parts

60‧‧‧ micro switch

Claims (10)

A rocking type driving mechanism for a central locking of an automobile, comprising: a casing having two opposite inner rail portions; a driving unit disposed in the casing and having a motor; a transmission unit disposed at the The inside of the housing has a screw shaft and a transmission seat, and one end of the screw shaft is connected to the motor, and the transmission seat is displaceably disposed between the two inner rail portions of the housing and screwed on the screw shaft. The transmission base has a transmission tooth portion; and a swinging unit having a sector gear and at least one swing arm pivotally disposed on the housing and having a tooth surface, the tooth surface of the sector gear meshing with the transmission unit a drive tooth portion, the swing arm is located outside the housing and is connected to the sector gear at one end thereof. The rocking drive mechanism for a vehicle central control lock according to claim 1, wherein the drive unit further has a drive gear coupled to a shaft of the motor, the transmission unit further having a transmission gear, the transmission A gear meshes the drive gear and connects the screw shaft. The rocking drive mechanism for a central locking of a vehicle according to claim 1, wherein the housing is provided with a micro switch electrically connected to the motor and having a trigger lever, the transmission seat having an adjacent drive A triggering block of the tooth portion for pushing the trigger lever of the micro switch. The rocking drive mechanism for a vehicle central control lock according to claim 1, wherein the inner wall surface of the housing has two opposite extension portions, and a guiding groove is formed between the two extension portions, the transmission seat has a a guiding portion, the guiding portion of the driving seat is embedded in the guiding groove of the housing. The rocking type driving mechanism for a central locking of a vehicle according to claim 1, wherein the two opposite outer sides of the transmission seat respectively have an outer sliding rail portion, and the inner sliding rail portion of the housing and the transmission seat The rail portions are joined to each other. The rocking drive mechanism for a central locking of a vehicle according to claim 1, wherein the outer periphery of the housing has at least one ridged convex portion and at least one arcuate concave portion adjacent to the ridged convex portion, the sector gear The shaft portion of the sector gear is pivotally disposed on the ridge-shaped convex portion of the housing, and one end of the swing arm is fixedly coupled to the shaft portion of the sector gear by a connecting member, and the axis of the connecting member coaxially corresponds to The center of the arcuate recess. The rocking type driving mechanism for a central locking of a vehicle according to claim 6, wherein the toothed surface of the sector gear has a bisecting point, and the swing arm is away from the connecting member along an axis away from the sector gear. Extending, the direction of extension of the axis passes through the bisector of the tooth flanks of the sector gear. The rocking drive mechanism for a central locking of a vehicle according to claim 6 or 7, wherein the outer periphery of the housing has two ridge protrusions and two arcuate recesses, and the swing unit has two swing arms One end of the two swing arms is connected to the shaft portion of the sector gear by a connecting member. A rocking type driving mechanism for a vehicle central locking according to claim 1, wherein an axial direction of the rotating shaft of the motor and an axial direction of the screw shaft are parallel to each other. The rocking drive mechanism for a central locking of a vehicle according to claim 1, wherein the transmission base is a rectangular body.