KR100707108B1 - Automobile tail gate latch with motor-operated detention structure - Google Patents

Abstract

The present invention relates to a tailgate latch for an automobile having an electric restraint structure using a cam gear structure, and more particularly, a two-stage restrained state by switching a latch gear of an incomplete one-stage restraint state in one direction by using electric force. A tailgate latch for an automobile having an electric restraint structure using a cam gear structure configured to switch to

Automotive Tailgate Latch, Electric Restraint Structure, Latch Gear, 1st Restraint, 2nd Restraint, Actuator, Cam Gear, Pinion, Gear Ratio

Description

Automotive tailgate latch with electric restraint structure using cam gear structure {AUTOMOBILE TAIL GATE LATCH WITH MOTOR-OPERATED DETENTION STRUCTURE}

1 is an exploded state diagram showing the overall configuration of a tail gate latch for an automobile to which an electric restraint structure using the cam gear structure proposed in the present invention is applied.

FIG. 2 shows the base plate side in detail in the tailgate latch shown in FIG. 1;

FIG. 3 shows the auxiliary plate side in detail in the tailgate latch shown in FIG. 1, (a) shows a front configuration, and (b) shows a rear configuration.

4 illustrates a state in which a guide plate is seated on a base plate in a tail gate latch for a vehicle to which an electric restraint structure using a cam gear structure according to the present invention is applied,

5 is a view showing sequentially the switching state of the latch gear by the electric restraint structure using the cam gear structure according to the present invention.

*** Explanation of symbols for main parts of drawing ***

100. Tailgate latch 110. Base plate

110a. Opening 111.Latch Shaft

112. Pole shaft 120. Latch gear

120a. Hole 121. One-step binding

122. Two-stage binding 130. Pool

140. Auxiliary Plate 150. Backplate

160. Release lever 170. Micro switch

180.Guide plate 181.Slot

182. Guide member

200. Electric restraint structure 210. Switching link part

211.Link Pin 212.Switching Lever Shaft

213. Switch lever 213A. Body

213A-a. Interlock pin 213B. Auxiliary body

213B-a. Binding portion 213B-b. guide pin

220. Actuator section 221. Restraint motor

221a. Output shaft 222. pinion

223. Diffraction levers 223. Cam gears

The present invention relates to a tailgate latch for an automobile having an electric restraint structure using a cam gear structure, and more particularly, a two-stage restrained state by switching a latch gear of an incomplete one-stage restraint state in one direction by using electric force. A tailgate latch for an automobile having an electric restraint structure using a cam gear structure configured to switch to

Tailgates with a relatively large open area are installed at the rear of a van or RV vehicle, and a tailgate latch is provided at the lower side of the tailgate to lock / unlock the striker fixed to the vehicle body to control locking and opening of the tailgate. Done.

A typical tailgate latch has a latch gear (LATCH GEAR) having a hole for entering a striker and a latch gear (BWL) which controls the restraint state by binding the latch gear to a latch shaft and a pole shaft of a base plate having an opening. The shafts are rotatably installed in a state supported by one direction, and each end of the latch gear on the plate is formed with a bent one end bent in a curved shape, and two ends of the hole are formed with a b-shaped cutout at the end of the hole. Thus, the two-stage restraint is enabled by the poles.

Therefore, when the tail gate is closed with a small force, the pool is bound to the first stage binding portion formed at the outer periphery of the latch gear, and the first stage is restrained. When the tail gate is closed with a strong force, the pool is bound to the second stage binding portion. The two stage restraint state is maintained.

However, the one-stage restrained state is a relatively unstable restraint as compared to the two-stage restrained state due to the binding of the pole to the outer circumference of the latch gear.

That is, in the state where the latch gear is restrained by the first stage as described above, if an excessive impact is applied to the vehicle body or the tailgate, the restraint state of the latch gear is released and the tailgate may be opened, and the tailgate and the vehicle body are stable. It is difficult to remain closed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is installed in a conventional tailgate latch, so that the latch gear, which is restrained by the pole, in one direction by switching the latch gear in one direction using electric force, is stable in two stages. In providing a tailgate latch for an automobile having an electric restraint structure configured to be switched to a state, a cam gear configured to provide a stable acting force according to the power restraint of the latch gear by using a cam gear structure with a small torque of the restraint motor. An automotive tailgate latch having an electric restraint structure using the structure is provided.

The above object is achieved by the following configuration provided in the present invention.

Tailgate latch for an automobile having an electric restraint structure using a cam gear structure according to the present invention,

On the latch shaft and the pole shaft provided in the base plate where the striker enters, the latch gear having the hole into which the striker enters and the outer circumferential surface of the latch gear are engaged and released to control the striker restraint state of the latch gear. In a tailgate latch for an automobile having an electric restraint structure for restraining a striker by forcibly switching the latch gear of a tailgate latch of a form held in one direction by a spring and being forced by a spring,

On the rear side of the base plate on which the latch gear and the pole are installed, an auxiliary plate is installed in a direction orthogonal to form a bent shape as a whole.

A link pin having an upwardly protruding link pin disposed eccentrically on an upper surface of the latch gear; A switching lever shaft installed in a direction perpendicular to the base plate; Switching link portion configured to include; a switching lever shaft is provided in the form of a plate body eccentrically installed on the switching lever shaft, provided with an interlocking pin protruding upward at one end, and a binding portion for binding the link pin of the latch gear at the other end; Being prepared,

On the side of the auxiliary plate, the restraining motor for providing a power transmission force through the pinion provided on the axial force shaft; A plate-shaped body axially mounted to the auxiliary plate, a cam gear engaged with the pinion of the restraining motor is formed on one curved side opposite to the pinion of the restraining motor, and the other end is bound to the link pin of the switching lever of the switching link part. An actuator portion including a diffraction lever to be provided is provided,

When the pinion is rotated in one direction by the driving of the constraining motor, the diffraction lever is engaged with the pinion through the cam gear to be diffracted in one direction to switch the orthogonal switching lever in one direction, and the switching lever connects the link pin provided in the latch gear. By binding and switching, the striker restraint of the latch gear by the electric force is made,

The switching lever is accommodated in a separate guide plate installed at a predetermined interval spaced to the upper side of the base plate,

A guide pin protruding downward is provided at the other end of the switching lever, and a guide member having a curved inner side is installed inside the guide plate, and guide pins installed at the other end of the switching lever are shaped along the inner wall of the guide member. It is characterized in that it is configured to turn while drawing a trajectory.

Hereinafter, a tailgate latch for an automobile having an electric restraint structure using a cam gear structure proposed as a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded state view showing the entire configuration of a tailgate latch for an automobile to which an electric restraint structure using the cam gear structure proposed in the present invention is applied, and FIG. 2 is a side view of the base plate in the tailgate latch shown in FIG. 3 shows the auxiliary plate side in detail in the tailgate latch shown in FIG. 1, and FIG. 4 shows a base in a tailgate latch for a vehicle to which an electric restraint structure using a cam gear structure according to the present invention is applied. The guide plate is mounted on the plate, and FIG. 5 sequentially shows the switching state of the latch gear by the electric restraint structure using the cam gear structure according to the present invention.

The electric restraint structure 200 in the tailgate latch 100 for a vehicle having an electric restraint structure using a cam gear structure according to the present invention has a base having an opening 110a formed therein as shown in FIGS. 1 to 5. On the latch shaft 111 and the pole shaft 112 installed vertically on the plate 110, the latch gear 120 having the hole 120a formed thereon and the pole 130 which bind and restrain the latch gear 120 are rotated. In the tailgate latch 100, which is axially installed in a structure and configured to be elastically restored after being rotated by being pushed in one direction by the springs 111a and 112a, respectively, the first stage is restrained by the pole 130. The latch gear 120 in the closed state is forcibly switched in one direction by the electric force, so that the latch gear 120 constrained by the one step by the pole 130 can be changed into a two-stage restrained state.

Referring to the drawings illustrating a preferred embodiment, the base plate 110 of the tailgate latch 100 has an opening 110a for entering the striker, and the latch shaft 111 and the pole shaft 11 are formed as described above. Is installed, the auxiliary plate 140 is installed on the back side of the base plate 110 to be substantially orthogonal to form the shape of the entire appearance is bent into an L-shape. In addition, a U-shaped hole 120a into which the striker fixed to the vehicle body enters is formed in the latch gear 120 installed on the latch shaft 111 of the base plate 110, and the hole 120a on the outer circumferential surface thereof. The first stage binding portion 121 bent in a b-shape is formed near the inlet of the second stage, and the second stage binding portion 122 is formed at the end of the hole 120a into which the striker enters, respectively. It is configured to enable single or two-stage restraint.

One end of the pole 130 that directly controls whether the striker is restrained by the latch gear 120 is divided into s-shapes to form a branch shape, and one end 131 of the branched branch is latch gear 120. The first stage 121 or the second stage 122, and the other end 132 is hinged to the back plate 150 covering the upper side of the base plate 110. It is bound to one end of the 160, is switched in one direction by the external force transmitted through the release lever 160 to release the restrained state of the latch gear 120.

After mounting the tailgate latch 100 configured in the vehicle, and the user closes the tailgate (not shown) forcibly, the latch gear 120 is switched in one direction so that two ends of the pole 130 may be connected to one end 131. However, the binding portion 122 is bound. At this time, the latch gear 120 is to maintain a stable two-stage restrained state by the pole.

However, when the user closes the tailgate (not shown) lightly and lightly, the latch gear 120 is switched in one direction but the first stage binding unit 121 is not the two stage binding unit 122. Is bound to one end 131). At this time, the latch gear 120 maintains the one-stage restrained state, which is an incomplete restrained state by the pole 130.

Since the one-stage restraint state of the latch gear 120 by the pole 130 is not a stable restraint state, when excessive shock is applied, the restraint state of the latch gear 120 is released and there is a risk that the tailgate is opened. In addition, it is difficult to maintain a stable closed state of the tailgate and the vehicle body.

Therefore, in order to close the tailgate in a stable manner, the user must close the tailgate as hard as possible, and its size and weight may make it difficult to reach it.

In the present invention, by providing the electric restraint structure 200 in the tailgate latch 100, the latch gear 120 constrained in one step by the pole 130 is forcibly switched in one direction by the electric force, 130 to provide a configuration for switching from the first stage restraint state to the second stage restraint state.

At this time, the first stage restraint state and the second stage restraint state of the latch gear 120 are installed on the upper surface of the latch gear 120 is recognized by the micro switch 170 for detecting the switching angle of the latch gear 120. .

Motorized restraint structure 200 of the tailgate latch for an automobile according to the present invention is installed on the base plate 110 side, the switching link unit 210 for implementing the linkage structure with the latch gear 120, and the auxiliary plate ( It is installed on the side 140 and includes an actuator unit 220 for providing an electric force to the switching link unit 210.

Here, the switching link unit 210 is installed on the base plate 110 side, the link pin 211 is installed eccentrically on the upper surface of the latch gear 120 and protrudes upward; A switching lever shaft 212 orthogonal to the base plate 110; As a plate-shaped body installed on the switching lever shaft 212, one end is provided with an interlocking pin (213A-a) protruding upward, to the latch gear 120 through a binding portion (213B-a) provided at the other end. It includes a switching lever 213 for binding the installed link pin 211.

1 to 2, the switching lever 213 according to the present embodiment is supported by a spring 212a installed in the switching lever shaft 212 and is installed to elastically restore after rotation. The switching lever 213 has a main body 213A and an interlocking pin 213A-a provided eccentrically and installed on the switching lever shaft 212, and one end of which is stacked on the main body 213A. Combination is made of a connecting body (213B) formed a binding body (213B-a) to form a single body and to bind the link pin 211 at the other end.

In addition, the binding portion 213B-a provided at the other end of the switching lever 213 is manufactured in a concave shape, and is configured to bind in a form surrounding the link pin 211 protruding upward from the latch gear 120. .

The switching lever 213 configured as described above is installed by being stacked on the upper part of the base plate 110, and the base guide is installed on the guide plate 180 having an extended shape, thereby forming a stacked structure with the latch gear 120.

On the other hand, the bottom of the guide plate 180 is formed with a slot 181 corresponding to the turning trajectory of the link pin 211 installed in the latch gear 120, through the slot 181 in the latch gear 120. An upwardly protruding link pin 211 enters the guide plate 180.

Therefore, an interlocking action between the link pin 211 and the switching lever 213 is implemented in the guide plate 180.

In the present invention, in implementing such a switching link portion 210 on the base plate 110, a guide pin 213B-b protruding downward from the other end of the switching lever 213, and guide plate 180 The guide pin 213B-b installed at the other end of the switching lever 213 by installing a guide member 182 which is formed to be curved so that the inner surface of the inner one surface thereof conforms to the turning trajectory of the guide pin 213B-b. The guide member 182 is configured to pivot along the inner wall of the guide member 182.

Therefore, when the switching lever 213 is switched in one direction, the interlocking pins 211 installed in the latch gear 120 are bound to the binding portions 213B-a of the switching lever 213 and are swiveled in one direction, thereby making it possible to make two-stage changes. One-way switching of the latch gear 120 for the restrained state is made.

At this time, the guide pins 213B-b installed in the switching lever 213 are pivoted along the inner wall of the guide member 182.

On the other hand, the actuator unit 220 which is installed on the auxiliary plate 140 and provides the electric force to the switching link unit 210, restraining to provide the electric force through the pinion 222 provided on the axial shaft (221a). A motor 221; The plate-shaped body is installed on the auxiliary plate 140, the shaft 223c, a cam gear 223a engaged with the pinion of the restraining motor is formed on one curved side opposite to the pinion of the restraining motor, and the other end 223b. Is configured to include a diffraction lever 223 is fastened to the link pins (213A-a) of the switching lever 213 of the switching link unit 210.

Therefore, when the pinion 222 provided on the output shaft 221a is rotated in one direction by the driving of the restraint motor 221, the diffraction lever 223 is engaged with the pinion 222 through the cam gear 223a to diffract in one direction. Will be.

When the constrained motor 221 and the diffraction lever 223 adopt a cam gear structure to transmit power, a small torque of the constrained motor 221 is caused by the gear ratio between the pinion 222 and the cam gear 223a. A stable diffraction effect of the diffraction lever 223 according to the power restraint of the latch gear 120 through the cam gear structure can be implemented.

By the above-described configuration, when the micro switch 170 installed in the latch gear 120 recognizes that the latch gear 120 is in one-step restrained state as shown in FIG. 5A, the pinion 222 may be used. The output shaft 221a of the constrained motor 221 is rotated in one direction. At this time, the diffraction lever 223 is engaged with the pinion 222 through the cam gear 223a provided on one side, and is diffracted in one direction.

Then, the other end 223b of the diffraction lever 223 binds the interlocking pins 213A-a of the switching lever 213 installed on the base plate 110 side to switch the switching lever 213 in one direction. do.

Then, the switching lever 213 is interlocked with the diffraction lever 223, the link pin 211 of the latch gear 120 in the one-stage restrained state by the pole 130 is bound to switch a predetermined angle, One-way switching of the latch gear 120 is made. Therefore, the latch gear 120 constrained by the stage 130 by the pole 130 is switched in one direction by the electric force, as shown in FIG.

As described above, in the present invention, when the diffraction lever diffracted in one direction by one direction rotation of the constraining motor is interlocked with the orthogonal switching lever to switch in one direction, the switching lever engages the link pin provided in the latch gear. By switching, a tailgate latch for an automobile having an electric restraint structure using a cam gear structure configured to implement striker restraint of a latch gear by an electric force has been proposed.

In the present invention, in the proposed electric restraint structure of the tailgate latch, a cam gear structure is provided between the restraint motor and the diffraction lever, so that even a small torque of the restraint motor can provide a large torque according to the switching of the latch gear. It is configured to be.

Therefore, it is possible to reduce the volume by reducing the capacity of the restraint motor, it is possible to provide a stable action force according to the power restraint of the latch gear.

Claims (3)

On the latch shaft and the pole shaft provided in the base plate where the striker enters, the latch gear having the hole into which the striker enters and the outer circumferential surface of the latch gear are engaged and released to control the striker restraint state of the latch gear. In a tailgate latch for an automobile having an electric restraint structure for restraining a striker by forcibly switching the latch gear of a tailgate latch of a form held in one direction by a spring and being forced by a spring, On the rear side of the base plate on which the latch gear and the pole are installed, an auxiliary plate is installed in a direction orthogonal to form a bent shape as a whole. A link pin having an upwardly protruding link pin disposed eccentrically on an upper surface of the latch gear; A switching lever shaft installed in a direction perpendicular to the base plate; Switching link portion configured to include; a switching lever shaft is provided in the form of a plate body eccentrically installed on the switching lever shaft, provided with an interlocking pin protruding upward at one end, and a binding portion for binding the link pin of the latch gear at the other end; Being prepared, On the side of the auxiliary plate, the restraining motor for outputting the electric force through the pinion provided on the axial force shaft; A plate-shaped body axially mounted to the auxiliary plate, a cam gear engaged with the pinion of the restraining motor is formed on one curved side opposite to the pinion of the restraining motor, and the other end is bound to the link pin of the switching lever of the switching link part. An actuator portion including a diffraction lever to be provided is provided, When the pinion is rotated in one direction by the driving of the constraining motor, the diffraction lever is engaged with the pinion through the cam gear to be diffracted in one direction to switch the orthogonal switching lever in one direction, and the switching lever connects the link pin provided in the latch gear. By binding and switching, the striker restraint of the latch gear by the electric force is made, The switching lever is installed on a guide plate spaced apart from the upper side of the base plate by a predetermined interval, the other end of the switching lever is provided with a guide pin protruding downward, the inner side of the guide plate is provided with a curved guide member And a guide pin installed at the other end of the switching lever is pivoted along the inner wall of the guide member to form a defined trajectory. According to claim 1, wherein the outer peripheral surface of the latch gear is formed in the first stage and the second stage fastening portion, the restraint motor is driven when the state that the pool is attached to the first stage of the latch gear is driven, the latch A tailgate latch for an automobile having an electric restraint structure using a cam gear structure, which is converted to a state in which a pool is attached to a second stage of a gear. delete

Images