Door latch apparatus for vehicle

Abstract

The present invention relates to a vehicle door latch device and provides a vehicle door latch device comprising a base, a driving unit provided on the base, a latch unit provided on the base for controlling the opening and closing of a door, a sector gear unit rotated by the driving unit, an opening operating unit that opens the latch unit by rotating the sector gear unit in one direction, and a closing operating unit that switches the latch unit to a fully locked state by rotating the sector gear unit in the other direction.

Description

Technology Field

[0001] The present invention relates to a vehicle door latch device, and more specifically, to a vehicle door latch device in which a power release function and a power locking function are integrated. Background Technology

[0003] The vehicle is equipped with a door latch for locking the door. Generally, the door latch comprises a catch that restrains a striker provided on the vehicle body, a pawl that restrains the catch, a release cable that is pulled when the door handle is pulled, and a release lever that rotates the pawl so that the restraint of the catch by the pawl is released when the release cable is pulled.

[0004] With this configuration, when the door is closed, the striker is inserted into the groove of the catch, causing the catch to rotate in one direction, and the pawl prevents the catch from rotating in the opposite direction, thereby locking the door. When the handle is pulled while the door is closed, the restraint of the catch by the pawl is released as described above, and the door is unlocked. That is, the door is released.

[0005] Recently, to enhance convenience, electric door latch devices equipped with so-called power cinching and power release functions, which rotate the catch and pawl using the power of an electric motor to lock and unlock the door, are being applied to vehicles. However, conventional electric door latch devices include a cinching actuator equipped with an electric motor to perform the power cinching function and a release actuator equipped with an electric motor to perform the power release function. Consequently, the electric door latch device is heavy, requires a large installation space, and increases manufacturing costs.

[0006] The background technology for the present invention is disclosed in Korean Registered Patent Publication No. 10-0736977 (Registered on July 2, 2007, Title of Invention: Power Latch System). The problem to be solved

[0008] The present invention was devised to improve upon the aforementioned problems and aims to provide a vehicle door latch device capable of performing a power release function and a locking function by a single driving unit.

[0009] The present invention aims to provide a vehicle door latch device capable of detecting operational failures of the power release function and the squeezing function through a plurality of Hall sensors. means of solving the problem

[0011] A vehicle door latch device according to the present invention may include a base; a driving unit provided on the base; a latch unit provided on the base for controlling the opening and closing of a door; a sector gear unit rotated by the driving unit; an opening operating unit that opens the latch unit by rotating the sector gear unit in one direction; and a closing operating unit that switches the latch unit to a fully locked state by rotating the sector gear unit in the other direction.

[0012] The above latch portion may include a claw rotatably provided on the base; and a foul that is attached to the claw and restrains a strike inserted into the claw.

[0013] The above driving unit may include a motor unit that generates power and is provided on the base; a release gear that meshes with the output shaft of the motor unit; and a spur gear that meshes with the sector gear unit that is rotatably provided on the concentric axis of the release gear.

[0014] The above-mentioned opening operating part may include a movable projection formed on the sector gear part; and a power drive lever that rotates in contact with the movable projection and rotates the pawl.

[0015] The above-mentioned squeezing operating part may include a squeezing foul pin connected to the sector gear part; and a squeezing operating lever that contacts the squeezing foul pin when the sector gear part rotates in the other direction and rotates to move the claw to a fully locked position.

[0016] The above-mentioned new operating part may include a decoll-claw part that prevents the claw from switching to a fully locked state.

[0017] The above-described declutching portion may include a declutching lever connected to a manual lever and rotatably provided on the base; and a contact pin formed on the squeezing foul pin to contact the declutching lever, which rotates the squeezing foul pin upon contact to prevent contact between the squeezing foul pin and the squeezing operating lever.

[0018] One end of the above-mentioned declutch lever has a connecting groove formed therein that connects to the above-mentioned manual lever, and the other end may include a curved portion that extends to contact the above-mentioned contact pin when the above-mentioned declutch lever is rotated.

[0019] The sector gear section may include a reconnection section that prevents disconnection from the spur gear.

[0020] The above reconnection portion may include a support rib formed on the base; and an elastic member provided on the sector gear portion that restores the sector gear portion by means of elastic force when in contact with the support rib.

[0021] It may include a control unit that detects operational failures by detecting the positions of the above-mentioned opening operating part and the above-mentioned opening operating part.

[0022] The sector gear portion includes an operating plate, and the elastic member may be formed as an elastic bar that protrudes radially from the center of the operating plate and provides a repulsive force in the opposite direction to the direction of movement of the sector gear portion when in contact with the support rib.

[0023] The sector gear portion includes an operating plate, and the reconnecting portion may include a support rib formed on the base that provides a repulsive force in the opposite direction of the direction of movement of the sector gear portion when in contact with the operating plate. Effects of the invention

[0025] As described above, the vehicle door latch device according to the present invention can perform power release and power locking functions by a single driving unit, thereby enabling the door latch device to be lightweight and compact, and reducing manufacturing costs.

[0026] The present invention can detect operational failures of the power release function and power starting function through a plurality of Hall sensors and can display the operating status of each function, thereby providing convenience. Brief explanation of the drawing

[0028] FIG. 1 is a perspective view for explaining a vehicle door latch device according to one embodiment of the present invention. FIG. 2 is an exploded perspective view for explaining a vehicle door latch device according to one embodiment of the present invention. FIG. 3 is an exploded perspective view at a different angle to explain a vehicle door latch device according to one embodiment of the present invention. FIG. 4 is an exploded perspective view of a key part of a vehicle door latch device according to one embodiment of the present invention. FIG. 5 is a front view showing the internal configuration of a vehicle door latch device according to one embodiment of the present invention. FIG. 6 is a rear view showing the internal configuration of a vehicle door latch device according to one embodiment of the present invention. FIG. 7 is a front view illustrating the power release operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 8 is a rear view illustrating the power release operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 9 is a front view illustrating the opening operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 10 is a rear view illustrating the opening operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 11 is a front view illustrating the declutching operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 12 is a drawing for explaining the reconnection of a sector gear portion of a vehicle door latch device according to one embodiment of the present invention. FIG. 13 is a drawing showing position detection by power release operation of a vehicle door latch device according to one embodiment of the present invention. FIG. 14 is a drawing showing position detection by the opening operation of a vehicle door latch device according to one embodiment of the present invention. Specific details for implementing the invention

[0029] Hereinafter, a preferred embodiment of a vehicle door latch device according to an embodiment of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of explanation.

[0030] Furthermore, the terms described below are defined in consideration of their functions in the present invention, and these may vary depending on the intent or practice of the user or operator. Therefore, the definitions of these terms should be based on the content throughout this specification.

[0031] FIG. 1 is a perspective view for explaining a vehicle door latch device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view for explaining a vehicle door latch device according to an embodiment of the present invention, FIG. 3 is an exploded perspective view from another angle for explaining a vehicle door latch device according to an embodiment of the present invention, FIG. 4 is an exploded perspective view of a key part of a vehicle door latch device according to an embodiment of the present invention, FIG. 5 is a front view showing the internal configuration of a vehicle door latch device according to an embodiment of the present invention, and FIG. 6 is a rear view showing the internal configuration of a vehicle door latch device according to an embodiment of the present invention.

[0032] Referring to FIGS. 1 to 6, a vehicle door latch device (10) according to one embodiment of the present invention may include a base (100), a driving unit (200), a latch unit (300), a sector gear unit (400), an opening operating unit (500), and a retracting operating unit (600).

[0033] The base (100) is formed in the shape of a plate, and each component is arranged by linking. This base (100) can be placed within a housing (20).

[0034] The driving unit (200) is provided on the base (100) and can function as a configuration that provides a power source necessary for the operation of the opening operating unit (500) and the opening operating unit (600).

[0035] More specifically, the driving unit (200) may include a motor unit (210) that generates power and is provided on the base (100), a release gear (220) that meshes with the output shaft of the motor unit (210), and a spur gear (230) that is rotatably provided on the concentric shaft of the release gear (220) and meshes with a sector gear unit (400) described later.

[0036] The output shaft of the motor part (210) may be equipped with a worm gear (212) that meshes with a release gear (220).

[0037] The latch portion (300) is provided on the base (100) to control the opening and closing of the door, and may be composed of a claw (310) rotatably provided on the base (100) and a foul (320) that is attached to the claw (310) and restrains a strike inserted into the claw (310).

[0038] When the contact between the claw (310) and the foul (320) is released, the strike can be released by the rotation of the claw (310).

[0039] This latch portion (300) may be provided on the opposite side where the sector gear portion (400), opening operating portion (500), and opening operating portion (600) are provided. That is, as shown in FIGS. 2 and 3, with respect to the base (100), the sector gear portion (400), opening operating portion (500), and opening operating portion (600) may be provided on one side, and the latch portion (300) may be provided on the other side.

[0040] The sector gear unit (400) is rotatably provided on the base (100) and rotates by the driving force of the driving unit (200), and can perform an opening operation or a closing operation depending on the rotation direction of the sector gear unit (400). That is, the sector gear unit (400) can rotate in one direction and the opposite direction depending on the rotation direction of the driving unit (200).

[0041] The sector gear section (400) is a sector-shaped gear, and the gear teeth formed on the outer surface mesh with the spur gear (230), and can rotate with the central axis as the center of rotation.

[0042] The opening operating part (500) can function as a configuration that opens the latch part (300) by rotating the sector gear part (400) in one direction.

[0043] FIG. 7 is a front view illustrating the power release operation of a vehicle door latch device according to one embodiment of the present invention, and FIG. 8 is a rear view illustrating the power release operation of a vehicle door latch device according to one embodiment of the present invention.

[0044] Referring to FIGS. 1 to 8, the opening operating part (500) can open the latch part (300) by rotating the sector gear part (400) in one direction.

[0045] Here, the rotation of the sector gear unit (400) in one direction is counterclockwise with respect to the central axis of the sector gear unit (400) based on FIG. 7.

[0046] For example, the opening operating part (500) may include a movable projection (510) formed on the sector gear part (400) and a power drive lever (520) that rotates by contacting the movable projection (510) and rotating the pawl (320).

[0047] The movable projection (510) is formed to protrude in the direction of opening operation of the sector gear part (400), and the power drive lever (520) is formed to be rotatable on the base (100), and by rotating through contact with the movable projection (510) to rotate the pawl (320), the attachment between the claw (310) and the pawl (320) can be released.

[0048] The power drive lever (520) is elastically supported by a torsion spring and can be restored to its original position by elastic force after contact with the pawl (320).

[0049] More specifically, the release gear (220) is rotated by the driving force of the motor part (210), and the sector gear part (400) engaged with the spur gear (230) is rotated counterclockwise by the rotation of the spur gear (230) which rotates together with the release gear (220).

[0050] When the movable projection (510) comes into contact with the power drive lever (520) by the rotation of the sector gear part (400) and the power drive lever (520) is rotated, the power drive lever (520) rotates the pawl (320) to release the contact between the claw (310) and the pawl (320), thereby opening the latch part (300).

[0051] The new operating unit (600) can function as a configuration that switches the latch unit (300) to a fully locked state by the rotation of the sector gear unit (400) in the other direction.

[0052] FIG. 9 is a front view illustrating the power locking operation of a vehicle door latch device according to one embodiment of the present invention, and FIG. 10 is a rear view illustrating the power locking operation of a vehicle door latch device according to one embodiment of the present invention.

[0053] Referring to FIGS. 1 to 6 and FIGS. 9 and FIGS. 10, the new operating unit (600) can rotate the claw (310) by rotating the sector gear unit (400) in the other direction to switch the latch unit (300) to a fully locked state.

[0054] Here, the rotation of the sector gear unit (400) in the other direction is clockwise with respect to the center axis of the sector gear unit (400) based on FIG. 9.

[0055] For example, the squeezing operating part (600) may include a squeezing foul pin (610) connected to the sector gear part (400) and a squeezing operating lever (620) that contacts the squeezing foul pin (610) when the sector gear part (400) rotates in the other direction and rotates to move the claw (310) to a fully locked position.

[0056] The center of the squeezing foul pin (610) is rotatably provided on the sector gear part (400) and is formed to extend clockwise so as to contact the squeezing operating lever (620). Additionally, the squeezing foul pin (610) may be formed to extend counterclockwise so as to contact the declutch lever (710) described later, forming a contact pin (720).

[0057] The new operating lever (620) is rotatably provided on the central axis of the sector gear part (400), and a locking groove (622) is formed by being recessed on the circumferential surface to be connected to the locking shaft (312) of the claw (310).

[0058] Accordingly, when the squeezing foul pin (610) comes into contact with the squeezing operating lever (620) by the clockwise rotation of the sector gear part (400), the squeezing operating lever (620) is rotated, and the claw (310) is rotated by the rotation of the squeezing operating lever (620) so that the claw (310) in the first stage locking state can be switched to the full locking state.

[0059] At this time, the new tapping foul pin (610) can be maintained in a state rotated clockwise by the torsion spring.

[0060] The new operating unit (600) may further include a decoll-clutch unit (700) that stops the transition of the claw (310) to a fully locked state.

[0061] FIG. 11 is a front view illustrating the declutching operation of a vehicle door latch device according to one embodiment of the present invention.

[0062] Referring to FIGS. 1 to 6 and FIG. 11, the declutching portion (700) according to the present embodiment may include a declutching lever (710) and a contact pin (720).

[0063] The declutch lever (710) is connected to the manual lever (M) and can be rotatably provided on the base (100). The declutch lever (710) is rotatably provided with its center axially coupled to the base (100).

[0064] The manual lever (M) can function in a configuration that is connected to an inside lever (not shown) and an outside lever (not shown) by a wire to rotate the pawl (320) to release the latch portion (300) and open the door.

[0065] The contact pin (720) is formed on the squeezing foul pin (610) to contact the declutch lever (710), and can function as a configuration that prevents contact between the squeezing foul pin (610) and the squeezing operating lever (620) by rotating the squeezing foul pin (610) counterclockwise upon contact.

[0066] The contact pin (720) is formed at the opposite end facing the squeezing operating lever (620) relative to the center of the squeezing foul pin (610).

[0067] Additionally, one end of the declutch lever (710) may have a connecting groove (712) formed to be connected to the manual lever (M), and the other end may include a curved portion (714) that extends to contact the contact pin (720) when the declutch lever (710) is rotated.

[0068] Accordingly, when the quenching operation is performed by the clockwise rotation of the sector gear part (400), if the declutch lever (710) is rotated by the rotation of the manual lever (M), the curved part (714) comes into contact with the contact pin (720) and prevents the rotation of the quenching foul pin (610), thereby preventing contact between the quenching foul pin (610) and the quenching operation lever (620) and preventing the quenching operation. As a result, the transition from the first stage locking state of the claw (310) to the full locking state can be prevented.

[0069] The sector gear section (400) may include a reconnection section (800) that prevents disconnection from the spur gear (230).

[0070] FIG. 12 is a drawing for explaining the reconnection of a sector gear part (400) of a vehicle door latch device according to one embodiment of the present invention.

[0071] Referring to FIGS. 1 to 6 and FIG. 12, the reconnection part (800) according to the present embodiment can function as a configuration that prevents malfunction by reconnecting the sector gear part (400) and the spur gear (230) when the meshing is released.

[0072] For example, the reconnection part (800) may include a support rib (810) formed on the base (100) and an elastic member (820) provided on the sector gear part (400) that restores the sector gear part (400) by elastic force when in contact with the support rib (810).

[0073] The sector gear unit (400) may include an operating plate (410). The operating plate (410) is provided on the front of the sector gear unit (400) and is connected to the sector gear unit (400) so as to be rotated together with the sector gear unit (400).

[0074] The support rib (810) is formed protruding from the base (100) and can function as a configuration that supports the elastic member (820) and provides elastic force when in contact with the elastic member (820).

[0075] The elastic member (820) can be formed in the shape of an elastic bar formed on the operating plate (410). That is, it is formed in a cantilever shape extending radially from the center and can possess its own elastic force when in contact with the support rib (810). As shown in FIG. 12, the sector gear unit (400) is rotated clockwise for opening operation, and when the meshing between the sector gear unit (400) and the spur gear (230) is separated during this opening operation, the elastic member (820), which is made of an elastic bar, comes into contact with the support rib (810), and the operating plate (410) is elastically moved by the elastic force of the elastic member (820), thereby rotating the sector gear unit (400) counterclockwise to reconnect the meshing between the sector gear unit (400) and the spur gear (230).

[0076] As a result, even if the meshing between the sector gear (400) and the spur gear (230) is released, the malfunction can be prevented by reconnecting the elastic member (820).

[0077] Although not shown, the reconnection part (800) may include a support rib (810) formed on the base (100) that provides a repulsive force in the opposite direction of the movement direction of the sector gear part (400) when in contact with the operating plate (410).

[0078] In this embodiment, the elastic member (820) is shown as an elastic bar formed on the operating plate (410), but it is not limited thereto, and various modifications are possible within the technical scope of being able to elastically move the sector gear part (400) in a counterclockwise direction.

[0079] Meanwhile, a vehicle door latch device (10) according to one embodiment of the present invention may include a control unit (900) that detects a malfunction by detecting the position of an opening operating unit (500) and a opening operating unit (600).

[0080] FIG. 13 is a drawing showing position detection by power release operation of a vehicle door latch device according to one embodiment of the present invention, and FIG. 14 is a drawing showing position detection by power locking operation of a vehicle door latch device according to one embodiment of the present invention.

[0081] Referring to FIGS. 1 to 14, the control unit (900) according to the present embodiment can detect the positions of the opening operating unit (500) and the opening operating unit (600), and detect a malfunction of each of the opening operating unit (500) and the opening operating unit (600).

[0082] The control unit (900) may include a first detection unit (910) that detects the position of the sector gear unit (400), a second detection unit (920) that detects the position of the claw (310), a third detection unit (930) that detects the position of the foul (320), and a control unit (940) that determines whether there is a defect based on the detection values ​​of the first detection unit (910), the second detection unit (920), and the third detection unit (930).

[0083] The first sensing unit (910) may include a first sensing lever (912) and a first Hall element (914). The first sensing lever (912) is rotatably provided on the base (100). The first sensing lever (912) may be provided in correspondence with a trajectory centered on the center of the sector gear unit (400). Accordingly, the first sensing lever (912) may come into contact with the sector gear unit (400). More specifically, the first sensing lever (912) may come into contact with and rotate on an operating plate (410) formed on the sector gear unit (400).

[0084] The end of the first sensing lever (912) may be equipped with a magnetic N pole (912a) and S pole (912b).

[0085] And, the first Hall element (914) is provided on the base (100) and can correspond to the first detection lever (912). That is, the first Hall element (914) can detect the N-pole signal, S-pole signal, and off signal of the first detection lever (912).

[0086] A locking projection (412) that contacts the first sensing lever (912) may be formed on the operating plate (410) of the sector gear unit (400). Depending on the rotational direction of the sector gear unit (400), the locking projection (412) contacts the first sensing lever (912) at either the front or rear end, and the first sensing lever (912) may be rotated accordingly.

[0087] The first sensing lever (912) can be fixed in position by a position fixing part (915). The position fixing part (915) may include a fixing projection (916) formed on the base (100) and a plurality of fixing grooves (917) formed on the same trajectory around the rotation axis of the first sensing lever (912) so as to correspond to the fixing projection (916).

[0088] The fixing groove (917) is formed in three places and can be fixed at three positions by combining the fixing projection (916) and the fixing groove (917), so that the first sensing lever (912) can be fixed at the positions of the N-pole signal, S-pole signal, and off signal detected by the first Hall element (914).

[0089] The second detection unit (920) may include a second detection lever (922) and a second Hall element (924). The second detection lever (922) is rotatably provided on the base (100). The second detection lever (922) is linked to the rotation of the claw (310), and may have a magnetic N pole (922a) and S pole (922b) provided at its end. Additionally, the second Hall element (924) is provided on the base (100) and may correspond to the second detection lever (922). That is, the second Hall element (924) can detect the N pole signal, S pole signal, and off signal of the second detection lever (922).

[0090] The third detection unit (930) may include a third detection lever (932) and a third Hall element (934). The third detection lever (932) is formed on the pawl (320) and is equipped with a magnetic N pole (932a) and S pole (932b). The third Hall element (934) is provided on the base (100) and may correspond to the third detection lever (932). The third Hall element (934) can detect the N pole signal and S pole signal of the third detection lever (932).

[0091] In this way, the position of the opening operating part (500) and the opening operating part (600) detected by the first, second, and third detection parts (910, 920, 930) is detected, and the control unit (940) can detect an operating failure according to the position detected by the first, second, and third detection parts (910, 920, 930) and can display the operating status of the latch device (10) through a display (not shown).

[0092] The control unit (940) is formed on a printed circuit board, and each of the first Hall element (914), second Hall element (924), and third Hall element (934) is formed on the control unit (940) and can correspond to each of the first detection lever (912), second detection lever (922), and third detection lever (932).

[0093] Hereinafter, the detection of operational failure of a control unit according to the opening operation, opening operation, and operating state of a vehicle door latch device according to one embodiment of the present invention is described as follows.

[0094] First, referring to FIG. 13 (a), the first Hall element (914) detects the N-pole signal of the first detection lever (912), the second Hall element (924) detects the N-pole signal of the second detection lever (922), and the third Hall element (934) detects the S-pole signal of the third detection lever (932).

[0095] Subsequently, referring to FIGS. 7 and FIGS. 8, the opening operation is observed such that the release gear (220) is rotated by the driving force of the motor part (210), and the sector gear part (400) engaged with the spur gear (230) is rotated counterclockwise by the rotation of the spur gear (230) which rotates together with the release gear (220).

[0096] When the movable projection (510) contacts the power drive lever (520) by the rotation of the sector gear section (400) and rotates the power drive lever (520), the power drive lever (520) rotates the pawl (320) to release the attachment between the claw (310) and the pawl (320), thereby opening the latch section (300). Since the striker can be disengaged from the latch section (300) by opening the latch section (300), the door can be opened.

[0097] As shown in FIG. 13(b), the first sensing lever (912), which comes into contact with the operating plate (410), is rotated clockwise by the counterclockwise rotation of the sector gear part (400), and the first Hall element (914) detects an off signal. Then, the second sensing lever (922) is rotated clockwise by the rotation of the claw (310), and the second Hall element (924) detects an off signal, and the third sensing lever (932) is also rotated clockwise by the counterclockwise rotation of the pawl (320) to detect an N-pole signal.

[0098] Based on the respective signals detected by these first Hall element (914), second Hall element (924), and third Hall element (934), it can be determined that accurate operation has been performed, and the completion of the current opening operation can be displayed.

[0099] When the opening operation is completed, the first detection lever (912) is also restored to its initial position by the restoration of the sector gear part (400) as shown in Fig. 13 (c), and the first Hall element (914) detects the N pole signal, the second Hall element (924) detects the off signal, and the third Hall element (934) detects the N signal.

[0100] Looking at the power-sinking operation, as shown in FIG. 14 (a), the first Hall element (914) detects the N-pole signal of the first detection lever (912), the second Hall element (924) detects the S-pole signal of the second detection lever (922), and the third Hall element (934) detects the S-pole signal of the third detection lever (932). This state is the first stage locking state of the first stage latch unit (300) due to the entry of the striker.

[0101] Subsequently, when the opening operation is initiated, the opening foul pin (610) comes into contact with the opening operation lever (620) by the clockwise rotation of the sector gear part (400) as illustrated in FIGS. 9 and 10, and the opening operation lever (620) is rotated by this contact, and the claw (310) is rotated by the rotation of the opening operation lever (620) so that the claw (310) in the first stage locking state can be switched to the full locking state.

[0102] As shown in FIG. 14 (b), the first sensing lever (912) that contacts the operating plate (410) is rotated counterclockwise by the clockwise rotation of the sector gear part (400), and the first Hall element (914) detects the S pole signal. Then, the second sensing lever (922) is rotated counterclockwise by the rotation of the claw (310), so the second Hall element (924) detects the N pole signal, and the third sensing lever (932) detects the S pole signal as the foul (320) maintains its current state.

[0103] When the new operation is completed, the first detection lever (912) is also restored to its initial position by the restoration of the sector gear part (400) as shown in Fig. 14 (c), and the first Hall element (914) detects the N-pole signal, the second Hall element (924) detects the N-pole signal, and the third Hall element (934) detects the S-pole signal.

[0104] Based on the respective signals detected by these first Hall element (914), second Hall element (924), and third Hall element (934), it can be determined whether an accurate chinching operation has been performed, and the completion of the current chinching operation can be displayed.

[0105] Meanwhile, according to the present embodiment, the opening operation can be prevented by the declutching function during the opening operation. This is a function to quickly resolve accidents such as door pinching. As shown in FIG. 11, when the opening operation is performed by the clockwise rotation of the sector gear part (400), if the declutching lever (710) is rotated by the rotation of the manual lever (M), the curved part (714) contacts the contact pin (720) and prevents the rotation of the opening foul pin (610), thereby preventing contact between the opening foul pin (610) and the opening operation lever (620) and preventing the opening operation. As a result, the transition from the first stage locking state of the claw (310) to the full locking state can be prevented. Safety accidents can be prevented.

[0106] In addition, according to the present embodiment, if the meshing between the sector gear part (400) and the spur gear (230) is released due to excessive rotation of the sector gear part (400) during new operation, this can be prevented through the reconnection part (800).

[0107] As illustrated in FIG. 12, when the meshing between the sector gear section (400) and the spur gear (230) is separated, an elastic member (820) made of an elastic bar contacts the support rib (810), and the operating plate (410) is elastically moved by the elastic force of the elastic member (820), thereby rotating the sector gear section (400) counterclockwise to reconnect the meshing between the sector gear section (400) and the spur gear (230). As a result, even if the meshing between the sector gear section (400) and the spur gear (230) is released, the reconnection of the elastic member (820) can prevent a malfunction.

[0108] Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom.

[0109] Therefore, the true technical scope of protection of the present invention should be determined by the patent claims. Explanation of the symbols

[0111] 10 : Vehicle door latch 20 : Housing 100 : Base 200 : Drive unit 210: Motor part 212: Worm gear 220: Release gear 230: Spur gear 300 : Latch 310 : Claw 312 : Stopping point 320 : Foul 400 : Sector gear section 410 : Operating plate 500 : Opening operating part 510 : Movable projection 520 : Power drive lever 600 : New operating part 610 : Shrinking fouling pin 620 : Shrinking operating lever 622 : Locking groove 700 : Declutach part 710 : Declutach lever 712 : Connecting groove 714 : Curved section 720 : Contact pin 800 : Reconnection part 810 : Support rib 820 : Elastic member 900 : Control unit 910 : First detection unit 912 : First detection lever 914: First Hall element 915: Position fixing part 916 : Fixing projection 917 : Fixing groove 920 : Second detection unit 922 : Second detection lever 924 : Second Hall element 930 : Third detection unit 932: Third detection lever 934: Third Hall sensor 940 : Control unit

Claims

Claim 1 A base; a driving unit provided on the base; a latch unit provided on the base for controlling the opening and closing of a door; a sector gear unit rotated by the driving unit; an opening operating unit that opens the latch unit by rotation in one direction of the sector gear unit; and a re-locking operating unit that switches the latch unit to a fully locked state by rotation in the other direction of the sector gear unit, wherein the latch unit includes a claw rotatably provided on the base; and a pawl that engages with the claw and restrains a strike inserted into the claw, wherein the driving unit is provided on the base and includes a motor unit that generates power; a release gear meshing with the output shaft of the motor unit; and a spur gear meshing with the sector gear unit rotatably provided on the concentric axis of the release gear, wherein the sector gear unit includes a reconnecting unit that prevents disconnection from the spur gear, and the reconnecting unit includes a support rib formed on the base; A vehicle door latch device comprising: an elastic member provided in the sector gear portion and which restores the sector gear portion by means of an elastic force when in contact with the support rib; wherein the sector gear portion includes an operating plate; and wherein the elastic member is formed to protrude radially from the center of the operating plate and is composed of an elastic bar that applies a repulsive force in the opposite direction to the direction of movement of the sector gear portion when in contact with the support rib. Claim 2 delete Claim 3 delete Claim 4 A vehicle door latch device according to claim 1, characterized in that the opening operating part comprises a movable projection formed on the sector gear part; and a power drive lever that rotates in contact with the movable projection and rotates the pawl. Claim 5 A vehicle door latch device according to claim 1, characterized in that the above-mentioned squeezing operating part comprises: a squeezing fouling pin connected to the sector gear part; and a squeezing operating lever that contacts the squeezing fouling pin when the sector gear part rotates in the other direction and rotates to move the claw to a fully locked position. Claim 6 A vehicle door latch device according to claim 5, characterized in that the above-mentioned new operating part includes a declutching part that stops the transition of the claw to a fully locked state. Claim 7 delete Claim 8 delete Claim 9 delete Claim 10 delete

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