JPH04116571U - Automotive back door closure device - Google Patents

Abstract

(57) [Summary] [Purpose] Improve usability and safety. [Structure] The retraction mechanism 50 is a toggle mechanism, and the input link 51 and the output link 52 are aligned in a straight line just before the latch member 60 is pulled down to the lowered position, so that the striker 12 is retracted. When the reaction force is the largest, the output of the retraction mechanism 50 becomes maximum without decelerating the rotation of the input link 51, allowing the striker 12 to be easily retracted and the back door 10 to be quickly closed. be able to.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

In the present invention, a striker is fixed to one side of the back door and the periphery of the door opening. A locking member that engages and disengages the striker is provided on the other side of the back door and the periphery of the door opening. The striker is pulled in through the locking member by power and the striker is The present invention relates to a closing device for an automobile back door, which closes the back door.

0002

[Conventional technology]

As a conventional automobile back door closure device, for example, there is As disclosed in 244988, a striker is fixed on the back door side. , a retraction mechanism that pulls down the striker is arranged around the periphery of the door opening, and the retraction mechanism has a screw member installed directly below the striker that extends vertically, and the screw When the member is rotated by the drive motor, the nut member that is threaded onto the screw member Guided downward by the guide rail, the latch member connected to the nut member descends. Then, the striker hooked by the latch member is pulled down, and the back door is closed. There are things to do.

0003 The output of the drive motor is greater than the maximum reaction force of the weather strip, etc. The pitch of the screw member should be based on the maximum output of the drive motor, etc. When set, the speed when the nut member is raised and lowered is always at the maximum output state, The reduction ratio increases, the speed is approximately 8 mm/s, and the drive motor starts. It takes about 2 seconds to stop, pull down the striker completely, and close the back door. It takes time.

0004

[Problem that the idea aims to solve]

However, in such conventional automobile back door closure devices, The user may feel that the two-second interval it takes to completely close the back door is long, or For example, because the 2-second interval between Do not insert your fingers, as they may get caught between the Implementing risk prevention measures such as this will increase costs, and if the key is used to open the There was a problem that the user had to wait for about 2 seconds at the time of the call, which made it difficult to use.

[0005] This invention was developed by focusing on these conventional problems, and has been developed to improve usability. To provide a closing device for an automobile back door that is easy to use and does not increase costs. The purpose is to

[0006]

[Means to solve the problem]

The key points to achieve this purpose are: A striker is fixed on one side of the back door and the periphery of the door opening, and A locking member that engages and disengages from the striker is provided on the other side of the door opening and the peripheral edge of the door opening. , the striker is pulled in through the locking member by power to close the back door. In a car back door closure device that closes the Fixed to the other of the back door and the peripheral edge of the door opening, the locking member is raised. a support base having a guide portion that guides the support base to move up and down between the position and the lowered position; a drive motor attached to the support base; is attached to the support base and moves the locking member between the raised position and the lowered position. and a retraction mechanism for moving the striker from one position to the other position to attract the striker. picture, The retraction mechanism is a toggle mechanism, and the input mechanism is rotated by the drive motor. a link, and an output link having one end connected to the locking member side, The input link and the output link are in a straight line just before attracting Leica the most. and the tip of the input link so that the output on the locking member side increases. A rear door lock for an automobile, characterized in that the other end of the output link is connected to the other end of the output link. Existing in the logger device.

[0007]

[Effect]

When the back door is open, the locking member is in the raised position and latches onto the striker. I'll be waiting as long as I can.

[0008] As you close the back door, for example, place the striker on the back door side in the raised position. When the locking member located at the The force link rotates.

[0009] When the input link rotates, for example, the locking member side is connected to the guide part via the output link. He was guided and pulled down. At this time, the seal reaction force is relatively small and small. The striker can be pulled in with great force.

0010 As the locking member approaches the lowered position, the seal reaction force increases. , when the locking member is in the lowered position, the seal reaction force is maximum, but at this time, the input reset When the link and the output link are aligned, a large moment is generated on the locking member side. The striker can be pulled down with great force, thereby closing the back door. can be done. When the back door is closed, the drive motor stops rotating.

[0011] In other words, there is no need to decelerate when a large pulling force is required. , the input link is driven at a relatively fast constant speed from the time the drive motor starts until it stops. Since it can be rotated, the back door can be closed quickly.

0012

【Example】

Hereinafter, one embodiment of the present invention will be described based on the drawings. Each figure shows one embodiment of the present invention. As shown in FIGS. 2 and 3, a striker 1 is provided at the center of the rear edge of the back door 10. 2 is permanently installed. A weather strip (not shown) is provided around the periphery of the door opening 14. is attached to the rear edge 16 of the door opening 14 in a manner corresponding to the striker 12. , a closure device 20a is attached.

[0013] The closure device 20a is fixed to the inner panel 17 at the rear edge 16 of the door opening 14. A support base 20 is provided, and a support base 20 is arranged so as to overlap with the support base 20 in the longitudinal direction of the vehicle body. A motor base 30 is provided, and a motor base 30 is formed between the support base 20 and the motor base 30. A latch base 40 is provided which is interposed in the storage space 30a.

[0014] As shown in FIG. 1, FIG. 6, and FIG. A trike guide groove 21 is cut downward from the upper edge, and at one end in both directions. is equipped with a key-operated unlocking mechanism 25, and a latch bar is installed at the other end of both sides. A retraction mechanism 50 for the base 40 is attached.

[0015] The unlocking operation mechanism 25 is a bell crank portion that is pivotably attached to the support base 20. A long hole 27 is bored in one end of the bell crank member 26. A connecting rod 27a is movably fitted into 7, and the other end of the connecting rod 27a is shown in the figure. It is connected to a link member 28 on the key cylinder side, which is omitted. bell crank parts One end of a connecting rod 29 is rotatably connected to the other end of the connecting rod 26. The other end of the support base 9 extends to the center of the support base 20 .

[0016] A detection protrusion 26a is formed at the other end of the bell crank member 26, and the motor The base 30 has a limit switch 34 that detects the movement of the protrusion 26a to be detected. It is provided.

[0017] The retraction mechanism 50 is a toggle mechanism that connects a disc-shaped input link 51 and an input link 51. It has an output link 52 connected to the peripheral portion by a pin member 51a. output phosphorus An output pin 53 is implanted at the tip of the support base 20. It fits into a guide groove 23, which is a guide portion bored in the guide groove 23, so as to be movable up and down. output pin A sliding member 53a is rotatably connected to the guide groove 53, and a guide is provided at the groove periphery of the guide groove 23. A sliding member 53a is formed on the guide flange 23a. is fitted onto the outside so that it can be guided and moved in the vertical direction. The tip of the output pin 53 is attached to the latch base. The other end of the base 40 is fixed to the other end.

[0018] As shown in FIG. 1, FIG. 4, FIG. 5, and FIG. A step pin 31 is installed to form a space 30a, and the step pin 31 is attached to the motor base. It is butted against the base 30 and solidified by caulking. In front of motor base 30 A drive motor 35 is mounted on the surface side, and the drive motor 35 has a motor shaft 35a on both sides. It is placed horizontally, extending towards the side. A deceleration mechanism 36 is attached to the drive motor 35. , an output shaft 37 interlocked with the drive motor 35 via a deceleration mechanism 36 protrudes forward. There is. A transmission pin 37a is implanted at the tip of the output shaft 37.

[0019] At the other end of the motor base 30 in both directions, there is a large circular insert into which the output shaft 37 is inserted. A through hole 32 is drilled, and a disc 38 for detection is fixed on the base end side of the output shaft 37. An input shaft 57 is connected to the distal end side of the output shaft 37 via a relay member. Input shaft 5 7 is fixed to the input link 51. An output shaft 3 is attached to the circumference of the disc 38 for detection. A large circular arc portion 38a with a large diameter and a small circular arc portion 38b with a small diameter are continuous with each other. It is formed by

[0020] The relay member is a forced unlocking member 39. The forced unlocking member 39 is the output shaft 3 The unlocking circular arc portion 39a that is concentric with the axis of 7 and the transmission pin 37a fit together to input A fitting flange 39b that allows the shaft 57 to rotate integrally with the output shaft 37; is formed.

[0021] The motor base 30 includes a limit switch that detects the movement of the disc 38 to be detected. Chi 33 is installed. The harness 33a is extended from the limit switch 33. Similarly, a harness 34a extends from the limit switch 34. Hahne The clips 33a and 34a are attached to the motor base 30 without causing any slack. It is fixed at b.

[0022] As shown in FIGS. 1 and 8, one end of the support base 20 is raised by a pivot 41. A latch base 40 is supported so as to be swingable between a position and a lowered position. latch bay A contact protrusion 48 is formed at the other end of the base 40 . The other end of the support base 20 , there are stopper flaps that come into contact with the contact protrusions 48 in the raised position and the lowered position, respectively. Lunges 29a and 29b are formed. The stopper flanges 29a and 29b have A damper member 29c is fitted.

[0023] A striker groove 42 is formed in the center of the latch base 40. A holding bracket 43 for the damper is fixedly installed so as to cover the groove 42 for the damper from the rear. There is. A housing portion 44 is formed in the center of the holding bracket 43. A fixed damper 45 and a movable damper 46 supported so as to be movable up and down are housed. . The movable damper 46 is urged upward by a spring member 47. retention bracket 43 has flanges 43a and 43b extending in both directions.

[0024] An escape hole 49 is bored at the other end of the latch base 40, and the input shaft is located in the escape hole 49. 57 penetrates so as to be relatively movable up and down.

[0025] A latch member 60, which is a locking member, is provided between the flange 43a and the latch base 40. The engagement position where the striker 12 is engaged with the striker 12 by the pivot 61 is sandwiched between the engagement position and the striker 12 It is pivotably supported to be able to swing between a disengaged position and a disengaged position. Insert the groove 42 for the striker into the middle. A locking plate 70 is disposed on the opposite side of the latch member 60, and the locking plate 70 A locked state in which the holding plate 70 restrains the latch member 60 in the engagement position by the pivot 71 The latch member 60 can be kicked up and forced into an unlocked position, which is a non-engaged position. It is supported by Noh.

[0026] The latch member 60 is swung counterclockwise by the spring member 62, that is, to the non-engaged position. is biased in the direction of The locking plate 70 is rotated clockwise by the spring member 72. In other words, it is biased in the direction of swinging toward the locked position. Locking plate 70 A restraining pawl 73 for restraining the latch member 60 in the engagement position is formed on the latch member 60. A riser protrusion 74 for kicking up the latch member 60 is formed on. Lot A connecting rod 29 for unlocking is connected to the lower end 75 of the king plate 70. .

[0027] The locking plate 70 has a locking plate 70 that is attached to the forced unlocking member 39 in order to swing to the unlocked position. A contact projection 76 extends laterally.

[0028] Next, the effect will be explained.

[0029] As shown in FIG. 9, the striker 12 on the back door 10 side is connected to the striker guide groove 2. 1, the latch member 60 is in the disengaged position and is not locked. The plate 70 is in contact with the jaw portion 65 of the latch member 60 and is in the unlocked position. Ma In addition, the output pin 53 of the retraction mechanism 50 is at the top dead center, and the latch base 40 is raised. in position. Further, the detection protrusion 26a of the unlocking operation mechanism 25 is a limit switch. Although the contact piece of the switch 34 is not pushed in, the large arc portion 38a of the disc 38 for detection is The contact piece of the limit switch 33 is pushed in.

[0030] As shown in FIG. 10, as the back door 10 is closed, the striker 12 The squid is guided by the squid guide groove 21 and moves downward to release the jaw portion 65 of the latch member 60. It is pushed into the engagement position against the force of the spring member 62. Rocking play back and forth The jaw 70 swings due to the biasing force of the spring member 72, and the restraining claw 73 engages the jaw 65. to restrain the latch member 60 in the engaged position. At this time, the detected object of the unlocking operation mechanism 25 The protrusion 26a pushes the contact piece of the limit switch 34, thereby locking the It is detected that the locking plate 70 is in the locked position.

[0031] When the contact piece of the limit switch 34 is pushed in and turned on, that is, the locking When the plate 70 is in the locked position, the drive motor 35 starts as shown in FIG. The input shaft 57 rotates via the deceleration mechanism 36, output shaft 37, and forced unlocking member 39. However, the input resists the reaction force of the weather strip and damper members 45 and 46 (not shown). Force link 51 rotates counterclockwise. Thereby, the output via the output link 52 is The force pin 53 is lowered along the guide groove 23, and the sliding member 53a is a guide flange. 23a and lowers, and the other end of the latch base 40 is centered around the pivot 41. Go down. When the input link 51 further rotates counterclockwise, the output pin 53 drops to the bottom. point, the other end of the latch base 40 lowers, and the damper member 48 reaches the stopper flap. The latch base 40 comes into contact with the lunge 29b, moves to the lowered position, and the locking play The striker 12 is retracted through the gate 70 and the latch member 60, and the back door 10 is opened. Fully close. The contact piece of the limit switch 33 is a small circular arc portion 38b of the disc 38 to be detected. Since the limit switch 33 is turned off and the drive motor is not pushed in, the The rotor 35 stops rotating.

[0032] When the striker 12 is pulled in against the reaction force of a weather strip (not shown), etc. The reaction force of the weather strip, etc. is transmitted through the latch member 60 to the latch base 40. The shaft 41 and the output pin 53 are divided into two parts. Therefore, the withdrawal The reaction force applied to the grinding mechanism 50 is halved, reducing the strength of the output link 52 and input link 51. There is no need to raise it in particular. Furthermore, just before the output pin 53 reaches the bottom dead center, the input voltage The link 51 and the output link 52 are aligned, increasing the retracting force of the retracting mechanism 50. Therefore, the striker 12 can be easily retracted. This results in a large No heavy load is applied.

[0033] Further, the distance between the pivot shaft 41 and the output pin 53 is the distance between the pivot shaft 41 and the latch member 60. Since the distance is approximately twice as long as the separation, approximately half of the amount of descent of the output pin 53 is due to the retraction of the striker 12. Even if the tolerance of the retraction amount of the output pin 53 is doubled, it will still be possible to scan with half the accuracy. The triker 12 can be retracted with high precision.

[0034] Furthermore, when the striker 12 is retracted, one end of the connecting rod 29 engages the pivot shaft 41. Since the bell crank member 26 rotates concentrically, the bell crank member 26 does not swing, and the protrusion 2 for detection 6a maintains the contact piece of the limit switch 34 in the pressed state. Furthermore, this At this time, the forced unlocking member 39 also rotates integrally with the input link 51; 39 does not come into contact with the abutted protrusion 76 of the locking plate 70, so the locking The plate 70 remains in the locked position from the unlocked position.

[0035] In FIG. 11, when the link member 28 is rotated counterclockwise by key operation, , as shown in FIG. 12, the bell crank member 26 is rotated counterclockwise by the connecting rod 27a. the lower end 75 of the locking plate 70 via the connecting rod 29 The locking plate 70 swings clockwise around the pivot 71 and is applied. From the locked position to the unlocked position. This allows the latch member 60 to swing to the non-engaged position. become capable. In addition, by swinging the bell crank member 26, the protrusion to be detected is 26a does not push the contact piece of the limit switch 34, and the limit switch switch 34 is turned off, the drive motor 35 is started, the input link 51 is rotated, and the output The output pin 53 pushes up the other end of the latch base 40 via the link 52, and the latch The base 40 swings counterclockwise about the pivot 41 and rises as shown in FIG. Be in position.

[0036] Similarly, in FIG. 11, an operation button (not shown) is used to open the back door 10. When the button is pressed, the drive motor 35 starts, the forced unlocking member 39 rotates, and the forced unlocking section The unlocking arcuate portion 39a of the member 39 contacts the abutted protrusion 76 of the locking plate 70. Touch and press down. As a result, the locking plate 70 is centered around the pivot 71. Swings clockwise, the riser protrusion 74 of the locking plate 70 engages the latch member 60. Kick up the jaw part 65 of. When the jaw portion 65 is kicked up, the latch member 60 It is forcibly swung counterclockwise around the pivot 61, and as the striker 12 rises. As a result, as shown in FIG. 13, the latch member 60 swings to the non-engaged position. Become. Also, at this time, the input link 51 - output link 52 - output pin 53 The other end of the latch base 40 is lifted, and the latch base 40 is centered around the pivot 41. With this in mind, swing counterclockwise and rise from the lowered position.

[0037] Further, when the drive motor 35 rotates, the output pin 53 is rotated as shown in FIG. At the top dead center, the latch member 60 goes to the non-engaged position, and the latch base 40 is in the raised position. Once the latch member 60 is forcibly rotated to the non-engaged position, , the restraining claws 73 of the locking plate 70 abut against the jaws 65 of the latch member 60. Then, it becomes impossible to swing any further, and the restraining claw 73 no longer engages with the jaw portion 65. stomach.

[0038] Before and after, the unlocking arc portion 39a of the forced unlocking member 39 is connected to the limit switch 33. , the limit switch 33 turns on, and the drive motor 3 5 stops rotating. In the state shown in Figure 14, manually lift the back door 10. It can be opened by

[0039] In the embodiment described above, the retraction mechanism 50 engages the latch base 40 via the latch base 40. The latch member 60, which is a stop member, is pulled down to draw in the striker 12. However, for example, the latch member 60 can be moved directly without using the latch base 40. It may also be configured to be pulled down directly.

[0040] Further, a striker 12 is provided on the back door 10 side, and a rear edge 16 of the door opening 14 is provided. Although the closure device 20a is shown in FIG. 2, the opposite embodiment may be used.

[0041] According to the closure device 20a according to the embodiment, the back door 10 is closed. The seal reaction force of the weather strip, etc. is shared between the pivot 41 and the retraction mechanism 50. Since the seal reaction force applied to the retraction mechanism 50 is reduced by about half, minute, the load on the drive motor 35 becomes smaller and the drive motor rotates at high speed. This allows you to close the backdoor more quickly and improves usability. can be done.

[0042]

[Effect of the idea]

According to the automobile back door closure device according to the present invention, the retraction mechanism is The toggle mechanism is used to connect the input link just before the locking member is pulled down to the lowered position. I made it so that it was in a straight line with the output link and pulled in the striker. , decelerating the rotation of the input link when the seal reaction force is greatest. The output of the retraction mechanism is maximized and the striker can be retracted easily. This makes it possible to quickly close backdoors, making it easier to use and reducing inconvenience. Safety can be improved by preventing hands or other objects from getting caught in the back door accidentally. Wear.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of a closure device showing an embodiment of the present invention.

FIG. 2 is a perspective view of a closure device in an installed state showing an embodiment of the present invention.

FIG. 3 is a side view of a closure device in an installed state showing an embodiment of the present invention.

FIG. 4 is a partially cutaway perspective view of a closure device showing an embodiment of the present invention, as seen diagonally from the rear.

FIG. 5 is a perspective view of a closure device showing an embodiment of the present invention.

FIG. 6 is a perspective view of a support base showing an embodiment of the present invention.

FIG. 7 is a perspective view of a motor base showing an embodiment of the present invention.

FIG. 8 is a perspective view of a latch base showing an embodiment of the present invention.

FIG. 9 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

FIG. 10 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

FIG. 11 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

FIG. 12 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

FIG. 13 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

FIG. 14 is an explanatory diagram of the operation of a closure device showing an embodiment of the present invention.

[Explanation of symbols]

10...Backdoor 12... Striker 20a...closure device 20...Support base 23...Guide groove (guide part) 30...Motor base 35...Drive motor 35a...Motor shaft 40...Latch base 50...Retraction mechanism 51...Input link 52...Output link 60...Latch member (locking member) 70...locking plate

Claims (1)

[Scope of utility model registration request] Claim 1: A striker is fixedly installed on one side of the back door and the peripheral edge of the door opening, and a locking member that engages and disengages from the striker is provided on the other side of the back door and the peripheral edge of the door opening. In the automobile back door closing device, the striker is pulled in through the locking member to close the back door, wherein the locking device is fixed to the other of the back door and the peripheral edge of the door opening, and a support base having a guide portion that guides the member to move up and down between a raised position and a lowered position; a drive motor mounted on the support base; and a drive motor mounted on the support base to move the locking member between the raised position and the lowered position. and a retraction mechanism that attracts the striker by moving it from one position to the other position, the retraction mechanism being a toggle mechanism,
an input link that is rotated by the drive motor; and an output link that has one end connected to the locking member,
The tip of the input link and the other end of the output link are arranged so that the input link and the output link are aligned in a straight line immediately before the striker is most attracted, and the output on the locking member side increases. A closing device for a back door for an automobile, characterized in that: