JP4327677B2 - Door latch device for automobile - Google Patents

Description

  The present invention relates to an automotive door latch device.

2. Description of the Related Art Conventionally, an automotive door latch device has a meshing means that can be engaged with and disengaged from a striker on the vehicle body side, and a locking / unlocking means that can be switched between an unlocked state that can release the engaged state of the meshing means and a locked state that cannot be released. The housing includes a meshing structure and an operation structure attached to the meshing structure and capable of operating the locking / unlocking means. The housing forming the operation structure includes a number of electrical components such as a motor, a detection switch, and a connector. The functional parts are accommodated, and a through hole is provided for pivotally supporting a key lever capable of transmitting the operating force of the key cylinder provided on the outside of the door to the locking / unlocking means via various functional parts. (For example, refer to Patent Document 1).
JP 2002-129805 A

  However, in the conventional automotive door latch device as described above, various measures are taken, for example, by providing a seal member so that rainwater does not enter the housing from the through hole. Due to changes, etc., the sealing performance of the sealing member may deteriorate, and rainwater may enter the housing from the through hole and adhere to the electrical components provided in the housing, leading to the failure of the electrical components. is there.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the prior art, and it is an object of the present invention to provide an automotive door latch device that prevents rainwater entering the housing from adhering to electrical components provided in the housing. Yes.

According to the present invention, the above problem is solved as follows.
(1) A meshing structure having meshing means that can be engaged with and disengaged from the striker on the vehicle body side, and a locking structure that can be switched between an unlocked state that can be released and a locked state that cannot be released. In an automotive door latch device provided with an operating structure attached to the meshing structure and capable of operating the locking / unlocking means, the operating structure is disposed on the inside of the vehicle inside the door and includes an electrical component. a component receiving section in which various functional components are housed, is continuously provided substantially at a right angle against the the component accommodating portion, covering the unlocking means to face the unlocking means in the meshed structure surface provided comprising a housing having a cover portion, the upper portion of the component receiving section in the housing, on the basis of the operation of the key cylinder provided on the exterior side of the door, the unlocking means state switchable key lever is round of Capable provided a fitting through-holes, in the said component receiving portion and below the through hole, and the through hole and penetrated rainwater from possible receiving a receiving unit, the rainwater that has been received by the receiving unit the so does not flow in the component housing section to the region in which electrical components are provided, providing the water drain passage can be guided to the cover portion.

(2) In the above item (1), a wall portion that can prevent rainwater from entering a region where the electrical component in the component housing portion is provided is erected on the side of the receiving portion in the component housing portion .

( 3 ) In the above (1) or (2) , the fitting hole into which the bent claw portion provided in the meshing structure for fixing the housing to the meshing structure can be fitted in the cover of the housing. the provided communication causes the drain passage into the fitting hole.

According to the present invention, the following effects can be obtained.
(A) According to the first aspect of the present invention, the receiving portion that is in the component housing portion and that can receive rainwater that has entered from the through hole is provided below the through hole, and the rainwater that is received by the receiving portion is covered. By providing a drainage passage that can be guided into the part, the rainwater that has entered from the through-hole provided in the part housing part in the housing is guided into the cover part, and rainwater adheres to the electrical components provided in the part housing part. This can be surely prevented.

(B) According to the invention described in claim 2 , by providing the wall portion on the side of the receiving portion, it is possible to reliably prevent rainwater from entering the region where the electrical component is provided by the wall portion.

(C) According to the invention described in claim 3, by arranging the switch capable of detecting the operation of the key lever so as to be at least above the drainage passage, rainwater entering from the through hole adheres to the switch. It can be surely prevented.

(D) According to the invention described in claim 4, rainwater can be discharged to the cover portion side with a simple configuration, and it is possible to more reliably prevent rainwater from adhering to the electrical component provided in the component housing portion.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 is an exploded perspective view of the door latch device, FIG. 2 is a front view of the same, and FIG. 3 is a rear view of the same. In the following description, the upper side in FIG. 1 and the front side in FIG. 2 are the “front” of the automobile, the lower side in FIG. 1 and the back side in FIG. 2 are the “rear” of the automobile, respectively. The left diagonally lower side and the left side in FIG. 2 are respectively “car inside” of the automobile, and the right diagonal upper side in FIG. 1 and the right side in FIG. 2 are respectively “car outside” of the automobile.

  The door latch device (1) includes a mesh structure (2) fixed to a rear end portion of a front door (hereinafter referred to as a door) of an automobile by a plurality of bolts (not shown), and the mesh structure (2). And an operation structure (3).

  As shown in FIG. 14, the meshing structure (2) has a box-shaped body (4) made of synthetic resin, and in this body (4), there are a striker (10) fixed to the vehicle body side. Engaging means (5) for restraining the door to the closed state by being engaged and being engaged is housed. FIG. 14 shows a state in which the cover plate (16) that closes the rear surface of the body (4) (the front side in FIG. 14) is removed in order to show the internal structure of the body (4).

  The engagement means (5) is pivotally supported by a pivot (6) in the body (4) and has a latch (7a) having an engaging groove (7a) that can be engaged with and disengaged from a striker (10) fixed to the vehicle body side. ) And the pivot (8) in the body (4), and engages with the claws (7b) (7c) provided on the outer peripheral edge of the latch (7) to open the latch (7). And a locking plate (9) for preventing rotation in a direction (counterclockwise in FIG. 14).

  When the door is open, the latch (7) stops at the open position rotated approximately 90 degrees counterclockwise from the closed position shown in FIG. 14, and the striker (10) is released from the engagement groove (7a). Yes. When the door is closed, the striker (10) is engaged with the engaging groove (7a) from the right side in FIG. 14 as the door is moved, so that the latch (7) is clockwise from the open position. It rotates to turn to the closed position.

  The locking plate (9) engages the locking plate (19) in the engagement direction (clockwise in FIG. 14) from the engagement position shown in FIG. 14 as the latch (7) rotates from the open position to the close position. Against the biasing force of the spring (13) biased toward the spring, the latch (7) is once rotated in the releasing direction (counterclockwise in FIG. 14) and then biased by the spring (13). ) Is engaged with the claw portion (7b) (or claw portion (7c)) to prevent the latch (7) from rotating in the open direction. Further, based on the operation of a door opening operation handle (not shown) provided outside the door or a door opening operation handle (not shown) provided inside the vehicle, an open lever (described later) When 11) is released, the locking plate (9) rotates in the releasing direction from the engagement position engaged with the claw portion (7b) (or claw portion (7c)), and the claw portion (7b) ( Alternatively, the door can be opened by detaching from the claw (7c). The state in which the locking plate (9) is engaged with the claw portion (7b) of the latch (7) is the engagement state of the full latch in which the door is completely closed, and is also engaged with the claw portion (7c). This state is an engaged state of a half door where the door is not completely closed. The latch (7) is urged in the open direction by a spring (12) (see FIG. 1) wound around the pivot (6).

  In the vicinity of the locking plate (9) in the body (4), the lower surface of the locking plate (9) abuts, and a buffer member formed of rubber or the like for stopping the locking plate (9) in the engaged position. (14) is fixed. The buffer member (14) has a substantially cubic base portion (14a) fitted and fixed in a substantially U-shaped receiving frame portion (4a) provided in the body (4). 14a) is provided with a tongue piece (14b) extending obliquely upward from the side surface.

  FIG. 15 shows a front view of the meshing structure (2). As shown in the figure, a metal base plate (15) is fixed to the front side of the body (4) (front side in FIG. 15), and rotates integrally with the locking plate (9). Thus, the open lever (11) fixed to the pivot (8), the locking / unlocking lever (17) forming a part of the locking / unlocking means pivoted by the shaft (17a), and the pivot (18) An outside lever (19), which is attached to an operation handle (not shown) provided on the outside of the door and connected via a connecting member (not shown), a locking / unlocking lever (17) and an outside lever (19) And a sub-lever (20) that forms another part of the locking / unlocking means.

  The locking / unlocking lever (17) includes a lock knob (not shown) for locking / unlocking operation provided on the inside of the door, driving of a motor (33) described later provided on the operation structure (3), and on the outside of the door of the door. Based on the operation of a key cylinder (not shown) provided, the shaft is rotated around the shaft portion (17a), and the locking position shown in FIG. 15 and the unlocking position rotated counterclockwise by a predetermined amount from the locking position And is elastically held at each position by a spring (25) provided between the locking / unlocking lever (17) and the base plate (15).

  On the front surface of the locking / unlocking lever (17), a connecting portion (17b) protruding forward is provided. The connecting portion (17b) is connected to a transmission lever (46) described later in the operating structure (3) by attaching the operating structure (3) to the meshing mechanism (2) as will be described later. Synchronized with the operation of the lever (46).

  The sub lever (20) is divided into a first lever portion (21) and a second lever portion (22). The first lever portion (21) has a lower end portion pivotally attached to the free end portion of the outside lever (19) by a connecting shaft (21a), and a vertical slot (21b) provided in the upper end portion. It is slidably engaged with a protrusion (17c) provided at the lower end of the locking / unlocking lever (17). The second lever portion (22) has a lower end portion pivotally connected to the lower end portion of the first lever portion (21) by a connecting shaft (21a), and a first lever portion (21) by a spring (23). On the other hand, it is urged clockwise in FIG. Note that the first and second lever portions (21) and (22) are integrally moved by the urging force of the spring (23) while the mutual positional relationship is maintained.

  The first and second lever portions (21), (22) are in the locking position shown in FIG. 15 when the locking / unlocking lever (17) is in the locking position, and the locking / unlocking lever (17) is unlocked from the locking position. By rotating to the lock position, the lock moves to the unlock position rotated a predetermined amount clockwise from the lock position around the connecting shaft (21a).

  The locking / unlocking means is formed by a configuration including a locking / unlocking lever (17) and a sub-lever (20), but the present invention is not limited to this embodiment, and for example, the sub-lever (20) The first lever portion (21) and the second lever portion (22) may be integrally formed.

  In the following description, the locking state of the locking / unlocking means is when the locking / unlocking lever (17) and the sub lever (20) are in the locking position, and the unlocking state of the locking / unlocking means is the locking / unlocking lever ( 17) When the sub-lever (20) is in the unlocked position.

  When the unlocking means is in the unlocked state and the operation handle (not shown) on the outside of the vehicle is operated to open the door, the outside lever (19) is biased by the spring (24) from the standby position shown in FIG. Against this, it rotates in the release direction (counterclockwise in FIG. 15) and moves the sub lever (20) downward. When the sub-lever (20) moves downward, the release portion (22a) provided on the second lever portion (22) moves upward relative to the first engagement portion (11a) provided on the open lever (11). And the open lever (11) is rotated in the release direction (clockwise in FIG. 15). As the open lever (11) rotates in the release direction, the locking plate (9) rotates in the release direction integrally with the open lever (11) against the urging force of the spring (13) and latches. By disengaging from the claw portion (7b) (or claw portion (7c)) of (7), the engagement state of the meshing means (5) can be released and the door can be opened.

  Further, as shown in FIG. 15, when the locking / unlocking means is in the locked state, the door cannot be opened even if the operation handle (not shown) on the outside of the vehicle is operated to open the door. That is, even when the sub lever (20) moves downward as the outside lever (19) rotates in the releasing direction, the releasing portion (22a) is moved to the first engaging portion (11a) of the open lever (11). ) And the locking plate (9) cannot be rotated in the release direction.

  Next, the configuration of the operation structure (3) will be described. As shown in FIGS. 2 to 5, the operation structure (3) is fixed to the meshing structure (2) and has a synthetic resin housing (31) in which various functional parts including electrical parts are accommodated. And a synthetic resin cover (32) for closing the opening of the housing (31).

  The housing (31) is substantially perpendicular to the front surface of the meshing structure (2), and is connected to the component accommodating portion (31a) for accommodating various functional components and the rear end portion of the component accommodating portion (31a). It has a cover portion (31x) that faces at least the front surface (the surface on which the locking / unlocking means is provided) of the meshing structure (2) and covers at least the locking / unlocking means. The housing (31) includes a motor (33), a rotary switch (47), and a limit switch (48) that are connected to the terminals of the connector part (31z) provided at the lower end of the housing (31) and electrical components described later. A conductive plate and a terminal for electrically connecting the two are integrally formed by insert molding.

  A knob lever (35) constituting a functional component is pivotally supported on a shaft portion (31f) provided in the component housing portion (31a) of the housing (31). The knob lever (35) is connected to a lock knob for locking / unlocking operation provided on the inner side of the door via a cable (37) (see FIG. 5), and the locking / unlocking means is locked based on the operation of the lock knob. It can be moved to the corresponding locking position (see FIGS. 6 and 10) and the unlocking position (see FIG. 9) corresponding to the unlocking state of the locking and unlocking means by rotating approximately 45 degrees counterclockwise from the locking position. .

  A transmission lever (46) constituting a functional component is supported in the component accommodating portion (31a) of the housing (31) so as to be slidable in the vertical direction. The transmission lever (46) is movable to a locking position (see FIGS. 6 and 10) corresponding to the locking state of the locking / unlocking means and an unlocking position (see FIG. 9) corresponding to the unlocking state, and is close to the upper part. The connecting hole (46f) provided in the upper part is connected to the connecting part (17b) of the locking / unlocking lever (17), and the tooth parts (46a) (46b) (46c) provided in the upper part are worm wheels (described later). 34) meshes with the teeth (34a), (34b) and (34c), and further, the connecting hole (46d) provided in the center is connected to the end (35a) of the knob lever (35). .

  As described above, in synchronization with the movement of the knob lever 35 to the locking position and the unlocking position based on the locking / unlocking operation of the lock knob, the locking / unlocking means in the meshing structure 2 is transferred via the transmission lever 46. , Switching between the locked state and the unlocked state.

  An inside lever (45) that constitutes a functional component is pivotally supported on a shaft portion (31g) provided in the component housing portion (31a) of the housing (31). The inside lever (45) is connected to an operation handle (not shown) on the inner side of the vehicle via a cable (38) (see FIG. 5), and when the operation handle on the inner side of the vehicle is opened, the cable (38) Through the direction of rotation (counterclockwise in FIG. 6).

  The motor (33) constituting the electrical component is fitted in the motor housing wall (31e) provided in the component housing (31a) of the housing (31), and is fixed so that rattling does not occur. Rotate in a predetermined direction based on an operation of a remote control switch or the like (not shown).

  A worm wheel (34) constituting a functional part is pivotally supported by a pivot (43) in a worm wheel housing wall (31d) provided continuously above the motor housing wall (31e). The worm wheel (34) meshes with the worm (33b) fixed to the output shaft (33a) of the motor (33) and can rotate forward and backward, and the tooth portion (34a) provided integrally. The teeth (46a), (46b) and (46c) of the transmission lever (46) mesh with (34b) and (34c). Accordingly, when the worm wheel (34) rotates counterclockwise in FIGS. 6 and 10 due to the rotation of the motor (33), the transmission lever (46) moves downward, and also rotates clockwise in FIG. Then, the transmission lever (46) moves upward, and the locking / unlocking means is switched between the unlocked state and the locked state via the transmission lever (46). When the transmission lever (46) is moved to each position and the motor (33) is stopped, the worm wheel (34) is biased in the rotational direction (44) (see FIGS. 1 and 13). To return to the neutral position before rotation and stop. The stop of the motor (33) is controlled by a stop signal of a limit switch (48) constituting an electrical component provided in the component housing part (31a) for detecting each position of the transmission lever (46).

  A cylindrical key lever accommodating portion (31b) is provided on the upper portion of the housing (31), and the key lever (36) is pivotally supported in the key lever accommodating portion (31b). The key lever (36) has a shaft portion (36a) protruding through the through hole (31j) (see FIG. 12) provided at the end of the key lever housing portion (31b). A connecting lever (36f) connected to a key cylinder (not shown) provided outside the door of the door is fixed to 36a). In addition, on the outer periphery of the key lever (36) facing the rotary switch (47) described later, there are a plurality of tooth portions (36b) and a single wide tooth portion (36c) wider than each tooth portion (36b). It is provided continuously. Between the outer peripheral surface of the shaft portion (36a) of the key lever (36) and the inner peripheral surface of the key lever housing portion (31b), rainwater that has entered the door passes from the through hole (31j) to the key lever housing portion (31b). An annular seal member (49) (see FIGS. 11 and 12) is provided to prevent the light from passing through the component housing portion (31a).

  When the unlocking means is in the locked state, when the key cylinder is unlocked by a predetermined key, the key lever (36) rotates clockwise by a predetermined amount from the neutral position (see FIGS. 6 and 10). The upper claw portion (36d) provided on (36) abuts the projection (46e) provided on the upper portion of the transmission lever (46) from above, and the transmission lever (46) is moved from the locked position to the unlocked position. The locking / unlocking means is switched to the unlocked state. When the locking / unlocking means is in the unlocked state, when the key cylinder is locked, the key lever (36) rotates a predetermined amount counterclockwise from the neutral position (see FIG. 9), and the lower claw portion (36e) comes into contact with the protrusion (46e) from below, and the transmission lever (46) is moved from the unlocked position to the locked position, so that the locking / unlocking means is switched to the locked state.

  As shown mainly in FIG. 7, the rotary switch (47) constituting the electrical component is a switch housing wall provided near the key lever housing (31b) and above the key lever housing (31b). (31c) is fitted and fixed in the outer periphery facing the tooth (36b) of the key lever (36), the tooth (47a) that can mesh with the tooth (36b) of the key lever (36), and the wide teeth A wide fitting groove (47b) that can be meshed only at a regular position when the key lever (36) is assembled is provided continuously to the portion (36c).

  Upper and lower 2 for fixing the end portions (39a) and (40a) of the conduits (39) and (40) through which the cables (37) and (38) are conducted are provided at the lower part of the component receiving portion (31a) of the housing (31). A number of conduit fixing parts (60) (61) are provided.

  The conduit fixing portions (60) (61) are spaced apart from each other by a predetermined amount in the vertical direction, and the walls of the portions facing each other are perpendicular to the wiring direction of the conduits (39) (40). One elastic claw piece (60a) (61a) having a pointed tip which can be elastically deformed is provided one by one.

  In the groove part (60b) (61b) of the conduit fixing part (60) (61), there is provided a pointed claw part (60c) (61c) that is not elastically deformable and faces the elastic claw piece (60a) (61a). A substantially square fitting hole (31h) is provided between the conduit fixing portions (60) and (61).

  A drain passage (31k) that guides and discharges rainwater to the cover portion (31x) side of the housing (31) is provided immediately below the key lever housing portion (31b) of the housing (31). Below the drainage passage (31k), there is provided a receiving portion (31o) protruding in a substantially horizontal direction so as to be able to receive rainwater entering from the through hole (31j) for the reason described later. ) At the rear end (for example, on the right in FIG. 7), the rainwater received by the receiving portion (31o) does not flow into the area in the component housing portion (31a) where various electrical components and electrical connection portions are provided. As described above, the wall portion (31p) capable of preventing the rainwater from flowing is provided obliquely upward.

  Although the seal member (49) is provided between the outer peripheral surface of the shaft portion (36a) of the key lever (36) and the inner peripheral surface of the key lever housing portion (31b), the seal member (49) Even if rainwater enters the key lever receiving portion (31b) from the through hole (31j) due to secular change, the rainwater is received by the receiving portion (31o), guided to the drainage passage (31k), and covered. It is discharged to the (31x) side. Further, the rainwater received by the receiving portion (31o) is prevented from flowing into the area where various electrical components and electrical connection portions are provided by the wall portion (31p). Thereby, rainwater can be prevented from entering a region where various electrical components and electrical connection parts are provided. Furthermore, since the rotary switch (47) is disposed above the through hole (31j), rainwater that has entered from the through hole (31j) does not adhere to the rotary switch (47).

  The cover (31x) of the housing (31) has a fitting hole (31q) into which the three bent claws (15a) provided on the base plate (15) of the meshing structure (2) can be fitted. Is provided. The housing (31) is fixed to the front surface of the meshing structure (2) by fitting the bent claws (15a) into the fitting holes (31q). Of the three fitting holes (31q), the uppermost fitting hole (31q) provided in the vicinity of the key lever housing portion (31b) is connected to the drainage passage (31k). Therefore, the rainwater guided by the drainage passage (31k) is discharged from the fitting hole (31q) to the cover portion (31x) of the housing (31).

  As shown mainly in FIG. 8, the cover (32) has a plurality of engaging pieces (32d) on the outer periphery, and the engaging pieces (32d) are provided on the outer periphery of the housing (31). By being engaged with the portion (31m), the housing (31) is fixed so as to close the opening of the component housing portion (31a).

  A pivotal support hole (32a) is provided on the inner side surface of the cover (32) (the front surface in FIG. 8 and the surface facing the housing (31)). The override lever (41) is pivotally supported in the pivot hole (32a).

  The override lever (41) is pivotally supported on the inner surface of the cover (32) by fitting an integrally provided shaft portion (41a) to the pivot support hole (32a). By fixing the cover (32) to the housing (31), the override lever (41) is disposed so as to overlap with the transmission lever (46) and the knob lever (35), and the arm portion (41b). The protrusion (45b) provided on the inside lever (45) engages with the long hole (41c) provided on the inner lever (45).

  As described above, when the inside lever (45) is rotated from the standby position (for example, see FIGS. 6 and 10) to the release position (see FIG. 9) based on the opening operation of the operation handle inside the vehicle, in synchronization therewith. The override lever (41) rotates from the standby position indicated by the two-dot chain line in FIG. 10 to the release position indicated by the two-dot chain line in FIG. 9, and the operating portion (41d) of the override lever (41) opens the open lever (11 ) And the open lever (11) is rotated in the release direction. Thereby, regardless of the state of the locking / unlocking means, the engagement state of the meshing means (5) can be released and the door can be opened. At the same time, the operating portion (45a) provided at the end of the inside lever (45) abuts against the bent portion (19a) provided at the end of the outside lever (19), The outside lever (19) is rotated in the release direction.

  As shown in FIG. 8, the inner surface of the cover (32) is fitted to the ends of the shaft portions (31f) and (31g) of the housing (31), and the knob lever (35) and the inside lever (45) are pivoted. Tube portions (32b) and (32c) are provided to support the portions (31f) and (31g) without rattling. In addition, an upper and lower connecting piece (32h) that can be elastically deformed is provided at the lower part of the cover (32), and a pipe fixing part (60) (60) ( 61) is provided with a pressing portion (65) for firmly fixing the conduit end portions (39a) and (40a) of the conduits (39) and (40). The pressing portion (65) is provided with a pair of elastic claw pieces (65a) that can be fitted into the fitting holes (31h) of the housing (31).

  When the cover (32) is fixed to the housing (31), the holding portion (65) is fitted into the conduit fixing portion (65h) by fitting the elastic claw piece (65a) into the fitting hole (31h) of the housing (31). As shown in FIG. 5, both ends of the holding portion (65) are connected to the back portions of the elastic claw pieces (60a) (61a) of the conduit fixing portions (60) (61). The elastic claw pieces (60a) (61a) are pressed against the grooves (60b) (61b). As a result, the pointed tip of the elastic claw pieces (60a) (61a) is strongly pressed against the conduit ends (39a) (40a) fitted in the grooves (60b) (61b). (39a) and (40a) are firmly fixed in the groove portions (60b) and (61b) of the conduit fixing portions (60) and (61).

  Synthetic resin for preventing rainwater from entering the component housing portion (31a) of the housing (31) in the region from the upper surface of the housing (31) and the cover (32) to the conduit fixing portion (60) (61). A top cover (50) made of metal is provided. The top cover (50) has a plurality of fitting holes (50a), and the fitting holes (50a) are provided with a plurality of protrusions (31n) provided on the outer surface of the housing (31) and the cover (32). By engaging with (32f), the housing (31) and the cover (32) are sandwiched and fixed.

  As described above, the operation structure (3) according to the present invention includes the component accommodating portion (31a) in which various functional components including the electrical components (motor (33), rotary switch (47), limit switch (48)) are accommodated. A housing (31) having a cover portion (31x) that is connected to the component housing portion (31a) and faces the surface of the meshing structure (2) on which the locking / unlocking means is provided. A through hole (31j) in which a key lever (36) capable of switching the state of the locking / unlocking means based on the operation of a key cylinder provided outside the door of the door is rotatably fitted in the housing part (31a). Provided below this through hole (31j) is a drainage passage (31k) that can guide rainwater entering from the through hole (31j) to the cover part (31x), so that various electrical components and electrical It is possible to reliably prevent rainwater from adhering to the connecting portion.

  Furthermore, a receiving portion (31o) capable of receiving rainwater entering from the through hole (31j) is provided below the drainage passageway (31k), and an electrical component is provided on the side of the receiving portion (31o). By providing the wall portion (31p) capable of preventing rainwater from flowing into the region, rainwater can be reliably guided to the drainage passage (31k) by the receiving portion (31o). Further, the wall (31p) can prevent rainwater from flowing into a region where various electrical components and electrical connection portions are provided.

  In addition, the rotary switch (47), which is an electrical component capable of detecting the operation of the key lever (36), is arranged in the component housing part (31a) of the housing (31) so as to be above the drainage passage (31k). Thus, it is possible to prevent rainwater entering from the through hole (31j) from adhering to the rotary switch (47).

It is a disassembled perspective view of the door latch apparatus concerning this invention. It is a front view of a door latch device similarly. It is a rear view of the door latch device. It is the right view of the door latch apparatus seen from the arrow IV direction in FIG. It is the left view of the door latch apparatus seen from the arrow V direction in FIG. It is a left view of the door latch apparatus of the state which removed the cover. It is a left view of the principal part of the housing of the state which removed the cover. It is an inner side view of a cover. It is a left view of the principal part of the operation structure in the unlocked state. It is a left view of the principal part of the operation structure in a locked state. It is a disassembled perspective view of the principal part. It is a longitudinal cross-sectional view which follows the AA line in FIG. It is a cross-sectional view which follows the BB line in FIG. It is a rear view which shows the internal structure of a meshing structure. It is a front view of the meshing structure in the locked state.

Explanation of symbols

(1) Door latch device
(2) Meshing structure
(3) Operation structure
(4) Body
(4a) Housing frame
(5) Meshing means
(6) Axis
(7) Latch
(7a) Engaging groove
(7b) (7c) Claw
(8) Axis
(9) Locking plate
(10) striker
(11) Open lever
(11a) First engaging portion
(11b) Second engaging portion
(12) (13) Spring
(14) Buffer member
(14a) Base
(14b) Tongue piece
(15) Base plate
(15a) Bending nail
(16) Cover plate
(17) Locking / unlocking lever (locking / unlocking means)
(17a) Shaft
(17b) Connecting part
(17c) Projection
(18) Axis
(19) Outside lever
(19a) Folding part
(20) Sub-lever (locking / unlocking means)
(21) First lever (locking / unlocking means)
(21a) Connecting shaft
(21b) Long hole
(22) Second lever (locking / unlocking means)
(22a) Release part
(23) (24) (25) Spring
(31) Housing
(31a) Parts housing
(31b) Key lever housing
(31c) Switch housing wall
(31d) Worm wheel housing wall
(31e) Motor housing wall
(31f) (31g) Shaft
(31h) Mating hole
(31j) Through hole
(31k) Drainage passage
(31m) (31n) protrusion
(31o) Receiving part
(31p) Wall
(31q) Mating hole
(31x) Cover
(31z) Connector part
(32) Cover
(32a) Pivot hole
(32b) (32c) Tube
(32d) Engagement piece
(32f) Projection
(32h) Connection piece
(33) Motor (electrical parts)
(33a) Output shaft
(33b) Warm
(34) Worm wheel (functional parts)
(34a) (34b) (34c) Teeth
(35) Knob lever (functional parts)
(35a) End
(36) Key lever
(36a) Shaft
(36b) Teeth
(36c) Wide teeth
(36d) (36e) Claw
(36f) Connecting lever
(37) (38) Cable
(39) (40) Conduit
(39a) (40a) Conduit end
(41) Override lever
(41a) Shaft
(41b) Arm
(41c) Long hole
(41d) Actuator
(43) Axis
(44) Spring
(45) Inside lever (functional parts)
(45a) Actuator
(45b) Projection
(46) Transmission lever (functional parts)
(46a) (46b) (46c) Teeth
(46d) Connecting hole
(46e) Projection
(46f) Connecting hole
(47) Rotary switch (electric parts)
(47a) Teeth
(47b) Wide fitting groove
(48) Limit switch (electric parts)
(49) Seal member
(50) Top cover
(50a) Mating hole
(60) (61) Conduit fixing part
(60a) (61a) Elastic claw piece
(60b) (61b) Groove
(60c) (61c) Claw
(65) Holding part
(65a) Elastic claw piece

Claims (3)

Engagement means that can be engaged with and disengaged from the striker on the vehicle body side, an engagement structure that has an unlocking means that can be switched between an unlocked state that can be released and an unlocked state that cannot be released, and the engagement structure In an automotive door latch device provided with an operating structure attached to a body and operable with the locking and unlocking means,
The operating structure is disposed on the interior side of the door, and the component receiving section in which various functional components comprising the electrical components are accommodated, is continuously provided substantially at a right angle against the the component accommodating portion, said mesh structure opposite the surface on which the unlocking means are provided in the body comprising a housing having a cover portion for covering the unlocking means, to the top of the component receiving section in the housing, a key cylinder provided on the exterior side of the door Based on the above operation, a through hole is provided in which a key lever capable of switching the state of the locking / unlocking means is rotatably fitted , and is provided in the component housing portion and below the through hole from the through hole. and penetrated rainwater capable receiving a receiving unit, the rainwater that has been received by said receiving unit, said in the component housing section so as not flow to the area to electrical components are provided, inducible to the cover portion Automotive door latch device characterized by providing the drain passage. 2. A door latch for an automobile according to claim 1, wherein a wall portion is provided on a side of the receiving portion in the component housing portion so as to prevent rain water from entering a region in the component housing portion where the electrical component is provided. apparatus. The cover portion of the housing, the bent claw portion provided in meshing structure for securing the housing to mesh structure provided fittable fitting hole, to communicate the drain passage into the fitting hole automotive door latch device according to claim 1 or 2, characterized in that the.

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