KR100218569B1 - Latch device for vehicle sliding door - Google Patents

Abstract

A latch device for a slide door according to the present invention includes a rear side latch unit 88 mounted on the rear end of a slide door 1, a power slide unit 6 provided on the vehicle body 2, A power closing unit 89, and control means for controlling the slide unit 6 and the closing unit 89. [ The latch unit 88 is switched to a half latch state in which the latch unit 88 is initially engaged with the rear side striker 87 fixed to the vehicle body 2 and a full latch state in which the latch unit 88 is fully engaged with the rear side striker 87. The power slide unit 6 slides the slide door 1 from the open position so that the latch unit 88 is brought into the half latch state. The power closing unit 89 closes the latch unit 88 in the half latch state in the full latch state.

Description

Latch device for vehicle slide door

The present invention relates to a latch device for a vehicle slide door. More particularly, the present invention relates to a latch device for sliding a slide door by the power of a motor and a closing unit for completely closing the slide door by the power of the motor .

25, a conventional slide door A, which is slidably mounted on the vehicle body B in a forward and backward direction, is provided with a front side striker C engaged with a front side striker C fixed to the vehicle body B, A latch unit D and a rear side latch unit F which is engaged with a rear side striker E fixed to the vehicle body B.

When the slide door A is to be closed, the slide door A first slides in the direction of the arrow X along the side surface of the vehicle body B so that the front side latch unit D engages the front side striker C Loses. Then, the slide door A moves in the direction of the arrow Y orthogonal to the arrow X direction, and the rear side latch unit F is engaged with the rear side striker E. That is, when the rear side latch unit F is engaged with the rear side striker E, the slide door A is rotated about the point where the front side latch unit D and the front side striker C are engaged with each other do.

A very strong force is required to slide the slide door A that performs this operation. Therefore, a large number of slide units for sliding the slide door A using the power of the motor have been proposed in the past. The proposed power slide unit is configured to slide the slide door A from the open position to the fully closed position by moving the slide door A in both the arrow X direction and the Y direction.

The conventional slide unit has proposed a structure capable of efficiently transmitting the force to the slide door A in the direction of the arrow X and the direction of the arrow Y. It is structurally possible to efficiently transmit the force to the slide door A in the direction of the arrow Y Is difficult. Further, in sliding the slide door A, a maximum force mf is required when the rear side latch unit F is fully engaged with the rear side striker E. Therefore, the output of the slide unit needs to be significantly exerted on the force mf.

Therefore, an object of the present invention is to provide a slide unit for sliding the slide door from an open position to a half latch position by the power of a motor, and a closing unit for moving the slide door at the half latch position to the full latch position by the power of the motor And to provide a latch device. In this latch device, the slide unit can be small and inexpensive.

It is also an object of the present invention to provide a slide unit that can be mounted in the inner space of the outer rear side panel of the vehicle body.

It is also an object of the present invention to enable the slide unit and the slide door to be connected by a wire cable which is not surrounded by a wire shell.

It is also an object of the present invention to provide a simple tension mechanism for applying an initial tension to a wire cable for transmitting the power of the slide unit to the slide door.

FIG. 1 is a perspective view of a power closing unit according to the present invention mounted on a slide door; FIG.

FIG. 2 is a sectional view showing the relationship between the slide door and the guide rail.

3 is a plan view of the connection bracket of the slide door;

4 is a sectional view of the guide rail;

5 is a partial cross-sectional plan view showing an initial tension mechanism;

6 is an exploded cross-sectional view of FIG. 5;

7 is a partial cross-sectional plan view of the case where the tension pulley of FIG. 5 is released; FIG.

FIG. 8 is a partial cross-sectional plan view showing another embodiment of the initial tension mechanism. FIG.

FIG. 9 is an exploded cross-sectional view of FIG.

FIG. 10 is a partial cross-sectional plan view of the case where the tension pulley of FIG. 8 is released; FIG.

FIG. 11 is a partial front view of the guide rail. FIG.

FIG. 12 is a partial front view showing a wire cable and a slide unit located inside the outer rear side panel; FIG.

13 is an enlarged front view of the slide unit;

14 is a front view showing the clutch mechanism in a disconnected state;

15 is a front view showing the clutch mechanism in the engaged state;

FIG. 16 is a front view of the T-shaped oscillator separated from the 15th road; FIG.

17 is a transverse plan view of the clutch mechanism.

FIG. 18 is a partially cutaway cross-sectional view of the second gear and brake shoe of the clutch body. FIG.

19 is a front view showing a final tension mechanism of the wire cable;

20 is a transverse plan view showing the final tension mechanism.

21 is a front view of the power closing unit;

22 is a longitudinal front view of the rear side latch unit;

23 is a rear view of the rear side latch unit;

24 is an enlarged view showing a corner portion of the guide rail;

Figure 25 is an illustration of prior art;

DESCRIPTION OF THE REFERENCE NUMERALS

1: Slide door 2: Body

6: Power slide unit 7: Wire cable

8: Guide rail 10: Connection bracket

21: tension poly 36: clutch mechanism

41: Actuator 55, 56: Spring

57, 58: Brake shoe 66, 67: Throttle plate

85: front side striker 87: rear side striker

88: rear side latch unit 89: power closing unit

112, 113: latch 200: control unit

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The slide door 1 slidably mounted on the vehicle body 2 in the forward and backward directions has a door open position facing the outer rear side panel (the quarter panel) 3 of the vehicle body 2 as shown in Fig. 2, And a door closing position for closing the elevator door 4. In the inner space 5 of the outer rear side panel 3, a power slide unit 6 for sliding the slide door 1 is mounted.

The slide unit 6 has a wire cable 7 and half of the wire cable 7 is located in the space 5 and the other half is connected to a guide rail 8 fixed to the side panel 3, Lt; / RTI > Both ends 9 of the cable 7 are connected to a connection bracket 10 rotatably mounted on the slide door 1 as shown in Fig. The connecting bracket 10 is provided with three rollers 11 which are slidably engaged with the guide rail 8. [ When the cable 7 is pulled by the slide unit 6, the connection bracket 10 moves along the guide rail 8, whereby the slide door 1 slides in the front-rear direction.

The guide rails 8 are arranged horizontally. On the front side of the guide rail 8, a corner portion 12 curved inward is formed. A front side pulley 13 of the cable 7 is provided near the front end of the guide rail 8 and a rear side pulley 14 of the cable 7 is installed near the rear end of the guide rail 8. [ do. 5 and 6, the front side pulley 13 is inserted into the holder 15 which prevents the cable 7 from coming off, and then the bracket 17 fixed to the side panel 3 is attached to the vertical side 16. A tension plate 19 is mounted on the boss 18 provided in the holder 15. A tension pulley 21 is supported on the tension plate 19 by a vertical axis 20.

The tension pulley 21 imparts an initial tension to the cable 7 so that when the cable 7 is mounted to the connection bracket 10 and the power slide unit 6, The tension pulley 21 is released (released). When the installation of the cable 7 is completed, the tension plate 19 is pushed by hand and the tension plate 19 is fixed to the rear side panel (not shown) by using the bolts 22 and the nuts 23 3).

Figs. 8 to 10 show another embodiment of the tension pulley 21. Fig. The tension plate 21 of this embodiment is slidably mounted on the bracket 17.

The rear side pulley 14 is supported on the rear side panel 3 by a vertical axis 24 and is disposed at the same height as the front side pulley 13 as shown in FIG. The power slide unit 6 is configured such that the cable 7 between the front poly 13 and the slide unit 6 and the cable 7 between the slide unit 6 and the rear pulley 14 are horizontal Side pulley 13 and the rear-side pulley 14, respectively. Thus, when the wire cable 7 is substantially horizontal, the overall length of the cable 7 is shortened, and the elongation and contraction of the cable 7 due to the change over time can be reduced. Further, if the wire cable 7 is horizontal, the wire shell surrounding the outer periphery of the cable 7 becomes unnecessary. Therefore, the exposed cable 7 can be used in the present invention.

12, the power slide unit 6 includes a substantially vertical base plate 25 fixed to the vehicle body 2, a wire drum 26 supported by the base plate 25, Tension pulleys 31 and 32 mounted on a pair of arms 29 and 30 and a motor 33 for rotating the wire drum 26. The pulleys 27 and 28 are driven by a motor The counter pulleys 27 and 28 are positioned at the same height as the front side pulley 13 and the rear side pulley 14 so that the cable 7 in the space 5 is horizontal.

As shown in FIG. 13, the wire drum 26 is supported on the base plate 25 by a horizontal shaft 34. A gear 35 is fixed to the wire drum 26 and a clutch mechanism 36 is provided between the gear 35 and the motor 33.

Details of the clutch mechanism 36 are shown in Figs. 14 to 18. Fig. An output gear wheel 38 is fixed to an output shaft 37 of the motor 33. On both sides of the output gear wheel 38, a pair of clutch bodies 39 and 40 are provided. The clutch bodies 39 and 40 are supported by shafts 42 and 43 on an inverted T-shaped oscillating body 41. [ The oscillator 41 is supported by a shaft 45 on a cover plate 44 fixed to the base plate 25. The shaft center of the shaft 45 is the same as the shaft center of the output shaft 37. The swinging body 41 is held at the neutral position shown in Fig. 14 by the resilience of the return spring 48 which clamps the bending portion 46 of the cover plate 44 and the bending portion 47 of the oscillating body 41 do.

The clutch bodies 39 and 40 include first gears 49 and 50 meshing with the output gears 38 and second gears 49 and 50 engaging with the arcuate racks 51 and 52 fixed to the base plate 25. [ 2 gears 53, 54, respectively. The second toothed wheels 53 and 54 are brought into contact with the first toothed wheels 49 and 50 with a predetermined frictional resistance so that the first toothed wheels 49 and 50 rotate together when the first toothed wheels 49 and 50 rotate.

14, when the first toothed wheels 49, 50 are rotated clockwise by the output toothed wheel 38, the second toothed wheels 53, 54 are also in contact with the frictional resistance Thereby rotating clockwise. Then, by the engagement of the second toothed wheels 53, 54 with the racks 51, 52, the oscillator 41 rotates counterclockwise as shown in Fig. 15, whereby the first left- The wire 49 is engaged with the gear 35 of the wire drum 26 so that the wire drum 26 rotates counterclockwise. Conversely, when the first toothed wheels 49, 50 and the second toothed wheels 53, 54 are rotated in the counterclockwise direction, the oscillating body 41 rotates clockwise, whereby the first right toothed wheel 50 are engaged with the gear 35 of the wire drum 26 to rotate the wire drum 26 in the clockwise direction. When the rotation of the motor 33 is stopped, the oscillator 41 is returned to the neutral position by the elastic force of the return spring 48, whereby the connection between the motor 33 and the wire drum 26 is released .

The frictional resistance is generated by the springs 55, 56 and the brake shoe 57, 58. The springs 55 and 56 are provided between the end edges 59 and 60 of the second toothed wheels 53 and 54 and the brake shoe 57 and 58 and the brake shoe 57 and 58 are disposed between the first toothed wheel 53, 49, and 50, respectively.

Fig. 19 shows a tension adjusting mechanism of the wire cable 7. Fig. This tension adjusting mechanism finally adjusts the tension of the cable 7 to which the initial tension is applied by the tension pulley 21 shown in Figs. 5 to 9. The arms (29, 30), on which the tension rollers (31, 32) are mounted, are rotatably mounted on the shaft (34). A pair of throttle plates 63 and 64 are supported on the shaft 34 and a tension spring 65 is provided between the throttle plates 63 and 64.

Adjustment members (66, 67) are mounted at the center of the arms (29, 30). The adjustment members 66 and 67 are supported by pins 70 and 71 on the brackets 68 and 69 fixed to the arms 29 and 30 as shown in Fig. The plurality of projections 72 and 73 of the adjustment members 66 and 67 are engaged with the holes 76 and 77 of the arms 29 and 30 by the elastic force of the springs 74 and 75. The adjusting members 66 and 67 are formed with gear portions 80 and 81 engaged with the arcuate gear portions 78 and 79 of the throttle plates 63 and 64, respectively.

The left arm 29 and the left throttle plate 63 are integrally connected to each other by engagement of the gear portion 78 and the gear portion 80. The right arm 30 and the right throttle plate 64, Is integrally connected by the engagement of the gear portion 79 and the gear portion 81 with each other. Therefore, the arms 29 and 30 are urged in the direction to tense the wire cable 7 by the elastic force of the tension spring 65.

The adjustment members 66 and 67 are provided with grooves 83 and 84 to which the driver 82 is engaged and the adjustment members 66 and 67 are rotated by engaging the driver 82 with the grooves 83 and 84 The angle between the arms 29, 30 and the throttle plates 63, 64 can be adjusted.

When the initial tension is applied to the cable 7 by the tension pulley 21, the cable 7 is tensed and the arms 29 and 30 rotate against the elastic force of the tension spring 65. At this time, if there is a manufacturing error in the length of the cable 7, the amount by which the spring 65 is pulled out is not uniform, so that the elasticity acting on the arms 29 and 30 is not fixed either. That is, if the length of the spring 65 to be pulled is longer than the designed length, the tension pressure becomes larger. On the contrary, if the length of the spring 65 is shorter than the designed length, the tension pressure becomes smaller. Therefore, in the present invention, after the initial tension by the tension pulley 21 is applied to the cable 7, the distance between the arms 29 and 30 and the control plates 63 and 64 is adjusted so that the length of the spring 65 becomes the designed length. The angle is changed by the adjusting members 66 and 67. [ As a result, even if there is a manufacturing error in the length of the cable 7, a desired tension pressure can be applied to the cable 7.

The thickness of the power slide unit 6 in the horizontal direction is smaller than the thickness of the conventional slide unit. Conventionally, since the drum is mounted on the base plate by the vertical axis, the thickness of the slide unit in the horizontal direction is larger than the diameter of the drum. In the present invention, however, since the wire drum 26 of the slide unit 6 is mounted on the vertical base plate 25 by the horizontal shaft 34, Can be made almost equal to the thickness of the film. Further, since the thickness of the wire drum 26 can easily be made thinner by increasing its diameter, it is easy to reduce the thickness of the slide unit 6 in the horizontal direction. In this way, the thinly formed slide unit 6 can be easily accommodated in the inner space 5 of the side panel 3. [

1, the slide door 1 is provided with a front side latch unit 86 engaged with the front side striker 85 fixed to the vehicle body 2 and a rear side striker 86 fixed to the vehicle body 2 Side latch unit 88 engaged with the rear-side latch unit 88 is provided. When the slide door 1 slides toward the closed position, the front side latch unit 86 is first engaged with the front side striker 85 and then the rear side latch unit 88 is engaged with the rear side striker 87, Lt; / RTI > There are two types of engagement of the rear-side latch unit 88 with the rear-side striker 87, namely, an initially engaged half-latch state and a fully engaged latch state . Sliding in the closing direction of the slide door 1 by the power slide unit 6 is performed until the half latch state is achieved.

The slide door 1 is provided with a power closing unit 89 for achieving a full latch state and a connector 91 connected to the power closing unit 89 through an electric cable 90. When the slide door 1 slides in the closing direction, the connector 91 is brought into contact with the connector 92 of the vehicle body 2 before the rear side latch unit 88 is engaged with the rear side striker 87. The connector 92 is connected to the battery 93. When the connector 91 is brought into contact with the connector 92, the power closing unit 89 receives electric power from the battery 93.

The vehicle body 2 is provided with a control unit 200 for controlling the power slide unit 6 and the power closing unit 89. The control unit 200 is connected to the rear side latch unit 88 via a plurality of signal cables 94. [

A wire cable 95 is provided between the power closing unit 89 and the rear side latch unit 88. The control unit 200 activates the power closing unit 89 when receiving the half latch signal from the rear side latch unit 88 through the signal cable 94 and outputs it to the rear side latch unit 88 ) To the full latch state.

Fig. 21 shows a power closing unit 89, and a motor 97 is fixed to the base plate 96. Fig. The output gear 99 of the motor 97 is engaged with the sector gear 99. The sector gear 99 is supported on the base plate 96 by a shaft 100. A winch lever 101 to which one end of the wire cable 95 is engaged is rotatably supported on the shaft 100. A connecting lever 102 is provided between the winch lever 101 and the sector gear 99. The connecting lever 102 is formed with a slot 103 into which the shaft 100 is inserted and the connecting lever 102 is slid as much as the slot 103 and the shaft 100.

A pin 104 protruding from both sides of the lever 102 is provided at one end of the connecting lever 102. The pin 104 is rotatably supported by the U-shaped groove 105 of the fan gear and the winch lever 101, respectively. The connection lever 102 is urged in the direction in which the pin 104 is engaged with the groove 105 by the elastic force of the spring 107. [

When the rear side latch unit 88 is in the half latch state, the motor 97 rotates, whereby the sector gear 99 rotates counterclockwise in Fig. In this case, since the pin 104 is engaged with both the groove 105 and the long hole 106, the winch lever 101 also rotates counterclockwise to pull the wire cable 95. Thereby, the power of the motor 97 is transmitted to the rear side latch unit 88, and the latch unit 88 is brought into the full latch state. As described above, according to the present invention, the slide door 1 in the open state is slid to the half latch state by the power of the power slide unit 6, is put into the full latch state by the power of the power closing unit 89, . Therefore, the driver can close the slide door 1 only by operating a switch for operating the power slide unit 6. [

The power closing unit 89 is provided with a cancel lever 108 for blocking the power transmission path between the motor 97 and the rear side latch unit 88. The cancel lever 108 is connected to the open lever 110 which is rotated by the outer open handle of the slide door 1 or the inner open handle 109. When the cancel lever 108 is rotated by the open handle 109 via the open lever 110 when the fan 97 is rotating in the full swing by the motor 97, So as to slide the connection lever 102 against the elastic force of the spring 107. As shown in Fig. Thereby, the pin 104 is disengaged from the groove 105, and the power transmission path between the motor 97 and the rear side latch unit 88 is cut off. This cancellation operation is carried out when the slide door 1 is to be closed or when a part of the body is sandwiched between the slide door 1 and the vehicle body 2. [

22 and 23, the rear side latch unit 88 is shown. The latch 112 and the striker 87 are engaged with the latch 112 and the latch 112 engaged with the rear side striker 87 to maintain the engaged state of the latch 112 and the striker 87 in the latch main body 111 of the latch unit 88 A ratchet 113 is housed. The ratchet 113 is engaged with the half latch end 114 of the latch 112 when the latch 112 is rotated to the half latch position by engaging the striker 87.

A switch lever 116 is fixed to the latch shaft 115 supporting the latch 112 as shown in FIG. The switch lever 116 rotates together with the latch 112 and contacts the terminal arm 118 of the switch 117 when the latch 112 is in the half latch position. Thereby, the switch 117 transmits the half latch signal to the control unit 200 through the signal cable 94. [

The cable lever 120 is supported by the shaft 119 on the latch body 111. The end of the wire cable 95 is engaged with the cable lever 120. A rotating arm 121 is fixed to the shaft 119 and a link 123 having the roller 122 mounted thereon is connected to the rotating arm 121. The roller 122 is guided and slides in the guide groove 124 of the latch body 111 when the cable lever 120 is rotated by the force of the wire cable 95.

The latch 112 is provided with a leg 125 which overlaps with the guide groove 124 when the latch 112 is in the half latch state. The latch 112 rotates to the full latch position as the leg 125 is pressed by the roller 122 sliding along the guide groove 124 and the ratchet 113 engages the full latch end 126 of the latch 112 ). When the latch 112 is brought into the full latch position, the switch lever 116 is released from the terminal arm 118 so that the switch 117 can supply a full latch signal via the signal cable 94 to the control unit 200 .

The ratchet lever 128 connected to the ratchet 113 through a pin 127 is supported on the latch main body 111. A lever 129 rotating by the open handle 109 is provided near the ratchet lever 128. The ratchet lever 128 is rotated by engaging the lever 129, releasing the ratchet 113 from the latch 112.

Referring again to FIG. 2, it can be seen that the wire cable 7 contacts the corner portion 12 of the guide rail 8 with strong force. Such contact is undesirable because it causes abrasion of the cable 7 and the guide rail 8. Accordingly, in the present invention, the roller 130 is mounted on the corner portion 12 of the guide rail as shown in Fig. The roller 130 preferably applies a force in the direction of the arrow by the elastic force of the spring 131.

The roller 130 provided on the corner portion 12 also has a separate function. 24, the end 9 of the cable 7 connected to the connecting bracket 10 is typically spaced from the guide rail 8. As shown in Fig. In this configuration, when the connecting bracket 10 is positioned at the straight portion of the guide rail 8 and when the connecting bracket 10 is positioned at the corner portion 12 of the guide rail 8, The distance from the wire drum 26 is changed, and the tension of the cable 7 is changed. However, when the roller 130 is provided at the corner portion 12 as in the present invention, the change in the distance between the end portion 9 and the wire drum 26 is reduced to reduce the change in the tension of the cable 7 .

The latch device for a vehicle slider door according to the present invention is advantageous in that the slide door can be easily closed, the tension of the cable can be reliably adjusted, the exposed cable can be used, and the slide unit can be compact and inexpensive .

Claims (7)

A front side latch unit mounted on a front end portion of the slide door and engaged with a front side striker fixed to the vehicle body; A rear latch which is fitted to a rear side striker fixed to the vehicle body and is in a half latch state in which the rear side striker is first engaged and a full latch state in which the rear side striker is fully engaged with the rear side striker, And a power slide unit installed on the vehicle body for sliding the slide door from an open position to a half latch position at which the rear side latch unit becomes the half latch state, Side latch unit to the full latch state And a control unit that controls the power slide unit and the power closing unit, wherein the rear side latch unit is configured to output a half latch signal to the control unit when the rear side latch unit is brought into the half latch state, Wherein the control unit operates the power closing unit when receiving the half latch signal. The power slide unit according to claim 1, wherein the power slide unit includes a motor, a wire drum rotating by the motor, and a wire cable connecting the wire drum and the slide door: Wherein: the power slide unit includes a vertical base plate on which the wire drum is mounted by a horizontal axis; and the power slide unit is housed in an inner space of the outer rear side panel Lt; / RTI > The power slide unit according to claim 1, wherein the power slide unit includes a motor, a wire drum rotating by the motor, and a wire cable connecting the wire drum and the slide door: : About half of the wire cable is located inside the guide rail, and about half of the remaining is located inside the outer rear side panel: about half of the remaining is connected to the power And is disposed horizontally except for a portion of the slide unit. The power slide unit according to claim 2, wherein the power slide unit includes a motor, a wire drum rotated by the motor, and a wire cable connecting the wire drum and the slide door: A front side pulley to which the wire cable is engaged is provided in the vicinity of the front end of the guide rail, and a rear side pulley is provided in the vicinity of the rear end of the guide rail, Wherein the front pulley and the rear pulley are arranged at the same height. The power slide unit according to claim 2, wherein the power slide unit includes a motor, a wire drum rotated by the motor, and a wire cable connecting the wire drum and the slide door: A horizontal guide rail extending from the guide rail; The power slide unit includes a vertical base plate on which the motor and the wire drum are mounted, and a pair of counter pulleys supported on the base plate by a horizontal axis; Wherein the wire drums are positioned between the counter pulleys: the counter pulleys are mounted at the same height as the guide rails. The power slide unit according to claim 1, wherein the power slide unit includes a motor, a wire drum rotating by the motor, and a wire cable connecting the wire drum and the slide door: A front side pulley to which the wire cable is engaged is provided in the vicinity of the front end of the guide rail, and a rear side pulley is provided in the vicinity of the rear end of the guide rail, A rear side pulley to which the wire cable is engaged is installed near the rear end of the guide rail; And a tension pulley for applying an initial tension to the wire cable is provided between the front pulley and the rear pulley. The tension pulley is moved in a direction substantially orthogonal to the wire cable, And is fixed by a screw or the like. The power slide unit according to claim 1, wherein the power slide unit includes a motor, a wire drum rotating by the motor, and a wire cable connecting the wire drum and the slide door: Wherein a corner portion curved toward the interior side is formed on the front side of the guide rail and a corner roller is provided on the corner portion to contact the wire cable.