JP6233983B2 - Door lock device - Google Patents

Description

  The present invention relates to a door lock device that can switch a latch by a latch mechanism that latches a vehicle door in a closed state between an unlocked state that can be released by operating a door handle and a locked state that cannot be released.

  Conventionally, as this type of door lock device, there is known a structure in which a handle interlocking lever interlocking with a door handle is rotatably supported on a lever rotation support shaft protruding from a resin component support wall. (For example, refer to Patent Document 1).

JP 2012-92631 (paragraph [0002], FIG. 6)

  However, in the conventional door lock device described above, the rising portion of the lever rotation support shaft portion on the component support wall is deformed by a load acting on the lever rotation support shaft portion from the handle interlocking lever, and the entire lever rotation support shaft portion is deformed. For example, the steering resistance of the handle interlocking lever may be increased, or the handle interlocking lever and other parts may be brought into contact with each other at a position different from the normal contact position to generate noise.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door lock device having higher durability than conventional ones.

In order to solve the above-mentioned problems, a door lock device according to a first aspect of the present invention is provided with a latch mechanism that latches a door of a vehicle in a closed state and a handle operating force generated by operating a door handle provided on the door. A lock switching mechanism is provided between the moving handle interlocking lever, and the lock switching mechanism transmits the handle operating force to the latch mechanism so that the door latch can be released, and the handle from the handle interlocking lever. In a door lock device that can be switched to a locked state that interrupts the transmission of the operation force and makes the door latch unreleasable, the resin support body that is fixed to the door and has a latch mechanism assembled thereto, and the support body A component support wall provided opposite to the door end wall on the opposite side of the center of rotation of the door, and projectingly formed on the component support wall. A lever rotation support shaft that is inserted into a through hole of the dollar interlocking lever and rotatably supports the handle interlocking lever, and is formed to project on the component support wall, and the component support wall side of the lever rotation support shaft is formed. The coil includes a surrounding wall that surrounds a part of the circumferential direction from the side and a coil portion that is inserted through the lever rotation support shaft portion and is accommodated between the enclosure wall and the lever rotation support shaft portion. And a latch holding torsion coil spring that engages a part of the latch mechanism and urges the latch mechanism toward the latching side of the door , and an inclined outer periphery formed on the lever rotation support shaft portion and having a draft angle. And a coil abutting ridge having a ridge line that protrudes from the circumferential direction of the inclined outer circumferential surface and has a ridge line parallel to the axial direction of the lever rotation support shaft portion. Has characteristics.

According to a second aspect of the present invention, in the door lock device according to the first aspect of the present invention , an opening is provided in the surrounding wall, and the latch holding torsion coil spring includes a locking arm portion that is locked to the opening. It has the characteristics.

According to a third aspect of the present invention, in the door lock device according to the first or second aspect, the coil portion is disposed at a position substantially concentric with the arc portion of the surrounding wall, and the lever rotation support shaft portion is formed of the coil portion. It is characterized in that it is arranged at an eccentric position on the inner side closer to the arc portion .
According to a fourth aspect of the present invention, in the door lock device according to any one of the first to third aspects, the lever rotation support shaft portion and the surrounding wall protrude in a horizontal direction from the component support wall, The lower end portion is characterized in that a through hole is formed.

According to a fifth aspect of the present invention, in the door lock device according to any one of the first to fourth aspects, the component support auxiliary wall provided on the support body and facing the component support wall, and the component support wall A lever rotation support shaft portion formed by fitting the tip end portion of the projecting support projection into a support tube portion projecting from the component support auxiliary wall, and a support tube portion projecting from the component support auxiliary wall With a ring-shaped ridge that encloses the whole from the side, and a handle interlocking lever that has a through-hole inserted through the support cylinder and the opening edge of the through-hole is directed to the annular ridge. Has characteristics.

According to a sixth aspect of the present invention, in the door lock device according to the fifth aspect , the auxiliary wall reinforcing rib is formed so as to project from the component supporting auxiliary wall and is lower than the annular ridge and extends radially from the annular ridge. However, it has characteristics.

According to a seventh aspect of the present invention, in the door lock device according to any one of the first to fourth aspects, the component support auxiliary wall provided on the support body and facing the component support wall, and the component support wall A lever rotation support shaft part formed by fitting the tip end part of the projecting support projecting part to the support cylinder part projectingly formed on the component support auxiliary wall, and the tip of the support cylinder part are formed and supported. It is characterized in that it has a tip inclined surface that obliquely crosses the central axis of the tube portion.

[Invention of Claim 1 ]
In the door lock device according to claim 1 , since the surrounding wall that surrounds a part of the lever rotation support shaft portion in the circumferential direction at the end portion on the component support wall side from the side is formed on the component support wall. The strength of the rising portion of the lever rotation support shaft portion of the wall can be increased, and the durability against the load acting on the lever rotation support shaft portion can be improved. Moreover, since the coil portion of the latch holding torsion coil spring is surrounded from the outside by the surrounding wall, the support of the coil portion is stabilized.

Further, the door lock device of the present invention has a ridge line parallel to the axial direction of the lever rotation support shaft portion at the contact portion of the coil portion on the inclined outer peripheral surface having a draft angle of the lever rotation support shaft portion. Since the coil contact protrusion is provided, the coil portion can be prevented from being displaced in the axial direction of the lever rotation support shaft portion due to the draft angle of the inclined outer peripheral surface.

[Inventions of Claims 5 and 7 ]
In the door lock device according to the fifth and seventh aspects, since the lever rotation support shaft portion is in a doubly supported beam state between the component support wall and the component support auxiliary wall, the support strength of the handle interlocking lever is improved. In addition, in the door lock device according to claim 5 , an annular protrusion that surrounds the entire support cylinder portion from the side is provided on the component support auxiliary wall, and an opening of a through hole in the handle interlocking lever is provided in the annular protrusion. Because the edge is applied, even if burrs remain at the edge of the through hole, the burrs are received in the annular gap between the annular ridge and the support tube, and the handle interlocking lever rotates smoothly. . Further, in the door lock device according to the seventh aspect, since the support cylinder portion is cut obliquely so as to have the tip inclined surface, the tip end portion of the support protrusion can be gradually inserted into the support cylinder portion. Insertion work becomes easy.

[Invention of claim 6 ]
The component support auxiliary wall of the door lock device according to claim 6 is provided with auxiliary wall reinforcing ribs extending radially from the annular protrusion, so that the strength of the entire component support auxiliary wall is increased and durability is improved. To do. This can also prevent problems such as an increase in rotational resistance of the handle interlocking lever and abnormal noise.

The perspective view of the door lock device concerning one embodiment of the present invention. Plan view of body body and first and second covers Perspective view of the outside of the vehicle door Perspective view of the inside of the vehicle door Side view of unlatched latch and ratchet Side view of latch and ratchet in latched state The perspective view of the state in which the component group was attached to the 1st component support wall The perspective view of the state in which the component group was attached to the 2nd component support wall An enlarged perspective view of a state in which the component group is attached to the second component support wall (A) Side view of lift lever, open link, etc. before door handle operation in locked state, (B) Side view of lift lever, open link, etc. before door handle operation in unlocked state (A) Side view of lift lever and open link after door handle operation in locked state, (B) Side view of lift lever and open link after door handle operation in unlocked state Front view of a state in which the component group is attached to the third component support wall Perspective view of the outer surface side of the first cover Partially enlarged perspective view of the outer surface side of the first cover A perspective view of the inner surface side of the first cover Partially enlarged rear view of the inner surface of the first cover Perspective view of the inner surface of the body Sectional drawing of the door lock apparatus in the AA cut surface of FIG. Sectional drawing of the door lock apparatus in the BB cut surface of FIG. The front view of the inner surface side of the 1st cover which concerns on the modification of this invention Sectional drawing of the door lock apparatus which concerns on the modification of this invention

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment according to the invention will be described with reference to FIGS. As shown in FIG. 1, the door lock device 10 of the present embodiment includes a plurality of parts assembled on a resin support body 11. The support body 11 includes, for example, a body main body 90 and first and second covers 91 and 92. As shown in FIG. 2, the body main body 90 is L-shaped as a whole when viewed from above, and has first and second component housing portions 90A and 90B on both side surfaces adjacent to each other across the outer corner portion. doing. The first cover 91 is assembled to the body body 90 so as to cover the first component housing portion 90A located on the L-shaped short side of the body body 90, while the L-shaped long side of the body body 90 The second cover 92 is assembled to the body main body 90 so as to cover the second component housing portion 90 </ b> B positioned at the position, and the entire support body 11 has the same L shape as the body main body 90.

  The first cover 91 is provided with a first component support wall 11C that supports components housed in the first component housing portion 90A. From the one side edge of the first component support wall 11C to the second cover 92 side. The side protruding wall 91A protrudes. A concave curved edge 92A is formed in the second cover 92 so as to correspond to the side protruding wall 91A as shown in FIG. As shown in FIG. 1, the edge of the side protruding wall 91A is superimposed on the concave curved edge 92A from the outside. In the present embodiment, the first component support wall 11C corresponds to the “component support wall” according to the present invention, and the heel side of the first component housing portion 90A facing the first component support wall 11C in the body main body 90. The second component support wall 90C corresponds to the “component support auxiliary wall” according to the present invention.

  As shown in FIG. 2, the outer surface reinforcing plate 93 is assigned to the outer surface of the first component support wall 11 </ b> C, while the inner surface reinforcing plate 93 </ b> B is assigned to the inner surface of the first cover 91. And the inner reinforcing plate 93B are fixed by a latch support shaft 13J and a ratchet support shaft 14J (see FIG. 5) penetrating the first component support wall 11C. For example, as shown in FIG. 3, an outer surface reinforcing plate 93 is applied from the inside to an end wall 101 </ b> A opposite to the rotation center of the rotation type door 101 disposed on the right side of the vehicle 100. The support body 11 is fixed to the door 101 by tightening a plurality of bolts (not shown) penetrating the part wall 101 </ b> A into a plurality of screw holes N <b> 3 (see FIG. 1) of the outer surface reinforcing plate 93.

  As shown in FIG. 1, the outer surface reinforcing board 93 covers substantially the entire surface excluding the upper edge portion and the lower end portion of the outer surface of the first component support wall 11 </ b> C. Further, a sheet metal groove 93M extending horizontally and having an open end on the side protruding wall 91A side is formed at an intermediate position in the vertical direction of the outer surface reinforcing plate 93. On the other hand, as shown in FIG. 13, a latch mechanism accommodating recess 91 </ b> B is recessed in the portion of the outer surface of the first component support wall 11 </ b> C that is covered by the outer surface reinforcing plate 93. Further, a back surface groove 91M is formed in the back surface of the latch mechanism housing recess 91B, and one end thereof is open to the outer surface of the side protruding wall 91A. As shown in FIG. 1, the striker receiving groove 12 is configured by overlapping the sheet metal groove 93M and the back surface groove 91M, and one end of the striker receiving groove 12 is opened on the side protruding wall 91A side. It has become. The striker receiving groove 12 is exposed to the outside of the door 101 through a notch 101B (see FIGS. 3 and 4) formed in the door 101, and is provided on the inner surface of the door frame 100W of the vehicle 100 (see FIG. 3) enters the striker receiving groove 12 through the striker receiving port 12K when the door 101 is closed.

  As shown in FIG. 13, a latch support hole 11G is formed in the first component support wall 11C on the upper side of the back surface groove 91M, and the latch support shaft 13J passes therethrough. Further, a ratchet support hole 11E is formed in the first component support wall 11C below the back surface groove 91M, and a ratchet support shaft 14J passes therethrough.

  The striker 15 as a whole has, for example, a gate structure in which a wire having a circular cross section is bent, and a pair of leg portions of the gate structure protrude from the inner surface of the door frame 100W and are arranged in the inner and outer directions. Then, a latch 13 described below engages with one of the pair of legs of the striker 15 arranged on the outer side.

  As shown in FIG. 5, the latch mechanism accommodation recess 91 </ b> B of the first cover 91 accommodates the latch 13 and the ratchet 14 (also referred to as “pole”) of the latch mechanism 10 </ b> R according to the present invention. The latch 13 includes first and second locking claws 13A and 13B which are parallel to each other, and a striker receiving portion 13C is formed between the first and second locking claws 13A and 13B. Further, the latch support shaft 13J passes through the portion of the latch 13 that connects the first and second locking claws 13A and 13B, and the latch 13 rotates around the latch support shaft 13J. Move.

  Further, as shown in FIG. 13, a spring accommodating groove 13M is formed in the inner surface of the latch mechanism accommodating recess 91B by recessing the periphery of the latch support hole 11G, and the latching torsion coil spring 13S (FIG. 13) is accommodated therein. 18), the latch 13 is biased in the unlatching direction (clockwise direction in FIG. 5). When the door 101 is opened, the latch 13 is positioned at the unlatched position (position shown in FIG. 5) by the contact between the stopper contact portion 13D provided on the latch 13 and the stopper 11X provided on the support body 11. The

  In the unlatched position, the first locking claw 13A is retracted above the striker receiving groove 12 and the second locking claw 13B crosses the striker receiving groove 12, and the open end of the striker receiving portion 13C is the striker. It faces the striker receiving port 12K side of the receiving groove 12. The striker 15 that has entered the striker receiving groove 12 is received in the striker receiving portion 13C, and the striker 15 pushes the second locking claw 13B to rotate the latch 13 in the latch direction (counterclockwise direction in FIG. 5). Move. As a result, as shown in FIG. 6, the striker receiving port 12 </ b> K side of the striker receiving groove 12 from the striker 15 is closed by the first locking claw 13 </ b> A, and the latch 13 is engaged with the striker 15.

  The ratchet 14 is rotatably supported by the ratchet support shaft 14J. The ratchet 14 includes a stopper piece 14B extending from the ratchet support shaft 14J to the side opposite to the striker receiving port 12K, and has a structure in which the latch rotation restricting piece 14A protrudes upward from an intermediate position of the stopper piece 14B. Yes. Further, the ratchet 14 is urged counterclockwise in FIG. 5 by a latch holding torsion coil spring 14S (see FIG. 18), which will be described later, and normally the stopper piece 14B and the ratchet stopper 11D of the support body 11 are in contact with each other. Is positioned at the origin position. When the door 101 is closed, the latch 13 pushed and rotated by the striker 15 depresses the latch rotation restricting piece 14A of the ratchet 14 and passes therethrough, and the ratchet 14 returns to the original position, as shown in FIG. Furthermore, the latch rotation restricting piece 14A of the ratchet 14 abuts against the first locking claw 13A of the latch 13 from the opposite side of the striker receiving portion 13C. Thereby, the latch 13 is held in a state of being engaged with the striker 15. In this way, the door 101 is latched in the closed state by the latch mechanism 10R.

  The rotation of the latch 13 by the ratchet 14 is controlled by the outside door handle 104 provided on the outer surface of the door 101 as shown in FIG. 3 and the inside door provided on the inner surface of the door 101 as shown in FIG. It can be released by any operation with the handle 105. The latch mechanism 10 </ b> R includes the lift lever 16 shown in FIG. 7 on the inner surface of the first cover 91 in order to receive operating force from the outside door handle 104 and the inside door handle 105.

  The lift lever 16 is made of, for example, a sheet metal, and is disposed on the inner surface side of the first component support wall 11C, and is rotatably supported by the ratchet support shaft 14J via the first cover 91. In addition, the lift lever 16 extends from the ratchet support shaft 14J to the striker receiving port 12K side of the striker receiving groove 12 (see FIG. 5) (hereinafter referred to as “front side” and the opposite side as “rear side”). A first tilting arm 16A protruding toward the rear and a second tilting arm 16C protruding rearward and obliquely downward from the ratchet support shaft 14J are provided. Then, the engaging protrusion 16K bent at a right angle from the upper edge of the second tilting arm 16C passes through the through hole 11F of the first component support wall 11C shown in FIG. 15 and is on the latch mechanism accommodation recess 91B (see FIG. 5) side. And engages with the engagement hole 14C (see FIG. 5) provided in the ratchet 14 in an uneven manner. Thereby, the lift lever 16 and the ratchet 14 rotate integrally. Further, as shown in FIG. 7, the first tilt arm 16A is provided with a latch release portion 16B. The latch release portion 16B has, for example, a protruding piece structure in which the tip end portion of the first tilting arm 16A is bent and protruded toward the body main body 90 side.

  As shown in FIG. 10A, an open lever rotation support shaft portion 97 (corresponding to the “lever support shaft portion” according to the present invention) is provided obliquely below the rear side of the ratchet support shaft 14J. An outside handle interlocking lever 17 (corresponding to a “handle interlocking lever” according to the present invention) is rotatably supported by the open lever rotation support shaft portion 97. The detailed configuration of the open lever rotation support shaft 97 will be described later in detail.

  The outside handle interlocking lever 17 is made of sheet metal, and includes a through-hole 17F through which the open lever rotation support shaft portion 97 penetrates as shown in FIG. A support arm 17A protruding to the front side and an operation arm 17D protruding to the rear side from the open lever rotation support shaft portion 97 are provided. The outside handle interlocking lever 17 is urged by the handle interlocking lever torsion coil spring 18 shown in FIG. 8 in the direction in which the support arm 17A is lowered, and the stopper arm 90S formed integrally with the body main body 90 is operated by the operation arm. It is normally positioned at the origin position (see FIGS. 10A and 10B) where the upper edge of 17D abuts.

  A rod locking piece 17E is bent at a right angle from the upper edge of the rear end of the operation arm 17D, and a resin ring 17V is mounted in a through hole formed in the rod locking piece 17E. Further, one end of a rod (not shown) is connected to the inside of the resin ring 17V, and the other end of the rod is connected to the outside door handle 104 of the door 101 shown in FIG. When the outside door handle 104 is operated, the rod locking piece 17E is pushed downward and the outside handle interlocking lever 17 is moved from the origin position (FIGS. 10A and 10B) to the operating position ( It rotates to FIG. 11 (A) and FIG. 11 (B)).

  Further, the pressure receiving piece 17C protrudes from the lower edge portion of the tip of the support arm 17A by being bent toward the second component support wall 90C (opposite side of the first component support wall 11C).

  The outside handle interlocking lever 17 is in a posture in which the support arm 17A is inclined forward and downward at the origin position (see FIG. 10A), and in the operating position, the support arm 17A approaches a horizontal posture and slightly. The posture is inclined forward and downward (see FIG. 11A).

  As shown in FIG. 10A, a tilting connection hole 17B is formed through the tip of the support arm 17A in a direction parallel to the axial direction of the open lever rotation support shaft 97. The tilting connection hole 17B has a shape in which a pair of mountain-shaped protrusions 17T and 17T protrude from the positions approaching each other from two positions 180 degrees apart on the inner peripheral surface of the circular hole. And the lower end part of the open link 19 is connected with the tilting connection hole 17B. The open link 19 and the lift lever 16 constitute a lock switching mechanism 16Z according to the present invention.

  The open link 19 is made of sheet metal, and as shown in FIG. 7, the open link 19 has a vertically long shape extending in the vertical direction as a whole. It overlaps from the support wall 11C side. A tilting connecting protrusion 19 </ b> A is provided at the lower end of the open link 19. As shown in FIG. 10A, the tilting connecting protrusion 19A is formed by bending the rear edge portion at the lower end portion of the open link 19 to the opposite side to the first component support wall 11C as shown in FIG. Then, the tilting connection projection piece 19A is passed between the pair of angle projections 17T and 17T (see FIG. 10A), and the open link 19 is tilted in parallel with the open lever rotation support shaft 97 (see FIG. Tilt about an imaginary shaft that penetrates the center of the tilting connection hole 17B.

  Further, the tilt range of the open link 19 is restricted by an active lever 25 described later. In order to receive the tilt restriction from the active lever 25, the open link 19 is provided with an unlocking piece 19B and a sliding contact piece 19E as shown in FIG. The unlocking piece 19B is formed by bending the lower edge portion of the lower end arm 19F protruding forward from the position near the lower end of the open link 19 to the second component support wall 90C side (opposite side of the first component support wall 11C). Further, the sliding contact piece 19E is bent and protrudes from the front edge portion of the intermediate portion in the vertical direction of the open link 19 to the second component support wall 90C side (opposite side of the first component support wall 11C). Further, a torsion coil spring 29 is mounted between the open link 19 and the outside handle interlocking lever 17, and the open link 19 is urged counterclockwise in FIG. 10A by the torsion coil spring 29. Yes. Furthermore, from the upper edge part of the open link 19, the pushing-up protrusion piece 19C is bent and protrudes toward the first component support wall 11C side.

  As shown in FIG. 17, an open lever support shaft portion 20 </ b> J projects from the third component support wall 90 </ b> E located on the heel side of the second component storage portion 90 </ b> B in the support body 11 at a position closer to the lower right side. The inside open lever 20 shown in FIG. 12 is pivotally supported by the open lever support shaft portion 20J. An inside door handle 105 is connected to the inside open lever 20 via a wire W1. When the inside door handle 105 is operated, the inside open lever 20 is rotated clockwise in FIG. 12 to push up the pressure receiving piece 17C of the outside handle interlocking lever 17 described above, and the outside handle interlocking lever 17 is moved to the origin. Rotate from position to operating position.

  As shown in FIG. 17, on the third component support wall 90E, an active lever support shaft portion 25J protrudes from a position near the lower end of the center in the left-right direction, and a wheel support shaft portion 24J extends at a substantially center position in the upper, lower, left, and right directions. Protrusions are formed. As shown in FIG. 12, the active lever 25 is rotatably supported on the active lever support shaft 25J, while the worm wheel 24 is rotatably supported on the wheel support shaft 24J. In addition, the motor 22 is attached to the third component support wall 90E at a position that is diagonally upper left of the worm wheel 24. Furthermore, a worm gear 23 provided on the rotating shaft of the motor 22 meshes with the worm wheel 24. In response to the operation of the central locking operation switch 107 (see FIG. 4) and the wireless key 108 (see FIG. 3) in the vehicle, the motor 22 drives the worm wheel 24 to rotate in one direction and the other direction. Engagement protrusions 24A and 24A provided on the worm wheel 24 abut against the active lever 25 to rotate the active lever 25 between the unlock position and the lock position.

  As shown in FIG. 12, the active lever 25 includes a first fan-shaped projecting piece 25A projecting upward from the active lever support shaft portion 25J and a fan-shaped second sector shape projecting obliquely downward to the left from the active lever support shaft portion 25J. A projecting piece 25D and an active action arm 25C projecting obliquely to the right from the active lever support shaft portion 25J are provided.

  As shown in FIGS. 10A and 10B, when the outside handle interlocking lever 17 is disposed at the origin position, the tip of the active action arm 25C is placed on the unlocking piece 19B of the open link 19. Abutting from below. Further, the lock maintaining arm 25B protrudes from one side edge portion of the first fan-shaped projecting piece 25A on the side close to the active action arm 25C and is positioned in front of the open link 19, and as shown in FIG. A posture regulating projection 25T projects from the tip of the maintenance arm 25B toward the open link 19 side.

  As shown in FIG. 12, a lock switching operation unit 106 (see FIG. 4) provided on the vehicle interior side of the door 101 is connected to the lower end portion of the second sector-shaped projecting piece 25D via a wire W2. The active lever 25 can be switched between the unlock position and the lock position by operating the lock switching operation unit 106.

  As shown in FIG. 17, the third component support wall 90E is formed with a support hole 11J below the open lever support shaft portion 20J, and from the opening edge of the support hole 11J on the back surface of the third component support wall 90E. The support sleeve 11T protrudes. Then, the first lever 32A protrudes laterally from one end portion of the relay shaft 32 shown in FIG. 1 that penetrates the inside of the support sleeve 11T and is located in the second component housing portion 90B, and the first lever 32A and the second lever 32A The fan-shaped projecting piece 25 </ b> D is connected by the relay link 30. Further, a second lever 32B projects laterally from the other end of the relay shaft 32, and a key cylinder 102 (see FIG. 3) provided on the door 101 is connected via the second lever 32B and a rod (not shown). ing. The active lever 25 can be switched between the unlock position and the lock position by inserting the key 103 (see FIG. 3) into the key cylinder 102 and operating it.

  When the active lever 25 is disposed at the unlock position while the outside handle interlocking lever 17 is disposed at the origin position, as shown in FIG. 19, the open link 19 is positioned at the unlock position, and the push-up protrusion 19 </ b> C of the open link 19 is positioned below the tip contact portion 16 </ b> B of the lift lever 16. At this time, the posture restricting protrusion 25T (see FIG. 9) of the lock maintaining arm 25B penetrates the center of the tilt connecting hole 17B in the tilting axial direction of the open link 19 with respect to the sliding contact protrusion 19E of the open link 19. The lock maintaining arm main body 25S excluding the posture restricting protrusion 25T of the lock maintaining arm 25B faces the sliding contact piece 19E of the open link 19 from the front. In this state, when the outside handle interlocking lever 17 rotates from the origin position to the operating position side, the push-up protrusion 19C of the open link 19 pushes up the latch release portion 16B of the lift lever 16, as shown in FIG. As a result, the lift lever 16 rotates together with the ratchet 14 (see FIG. 6) from the origin position to the release position, the engagement between the ratchet 14 and the latch 13 is released, and the door 101 can be opened.

  On the other hand, when the active lever 25 is disposed at the lock position while the outside handle interlocking lever 17 is disposed at the origin position, as shown in FIG. 10A, the active action arm 25C of the active lever 25 is opened. By the contact of the link 19 with the unlocking piece 19B, the open link 19 is positioned at the locked position, and the push-up protrusion 19C of the open link 19 is displaced backward from the lower position of the tip contact portion 16B of the lift lever 16. To do. Further, the posture restricting protrusion 25T of the lock maintaining arm 25B faces the sliding contact protrusion 19E of the open link 19 from the front. In this state, when the outside handle interlocking lever 17 rotates from the origin position to the operating position side, the push-up protrusion 19C of the open link 19 passes the side of the lift lever 16 as shown in FIG. The latch release portion 16B of the lift lever 16 is not pushed up by the open link 19, and the latch of the door 101 by the latch mechanism 10R is maintained. Even if the open link 19 is tilted forward when moving upward, the open link 19 abuts against the posture restricting projection 25T of the lock maintaining arm 25B, and the open link 19 is restricted from moving to the unlock side.

  Now, as shown in FIG. 18, the open lever rotation support shaft portion 97 that supports the outside handle interlocking lever 17 described above includes a support protrusion 95 that protrudes from the first component support wall 11 </ b> C of the first cover 91, and It comprises a support cylinder portion 96 protruding from the second part support wall 90C of the body main body 90.

  Specifically, as shown in FIG. 13, the lower part of the first component support wall 11C from the latch mechanism accommodating recess 91B is a protrusion support wall 95J according to the present invention, and the protrusion support wall. A support protrusion 95 is formed protruding from 95J toward the first component housing part 90A. As shown in FIG. 15, the support protrusion 95 protrudes at a position eccentric from the center of the tip wall 95 </ b> B, a large-diameter shaft portion 95 </ b> A rising from the protrusion support wall 95 </ b> J, a tip wall 95 </ b> B that closes the tip. The small meridian shaft portion 95C is formed, and a hole 95D is formed in the central portion of the small meridian shaft portion 95C. In addition, a step opening 11H is formed at a position on the diagonally front side of the support protrusion 95 by cutting away the wall of the step portion between the protrusion support wall 95J and the inner surface of the latch mechanism housing recess 91B.

  Further, an encircling wall 95F is formed to project from the projecting portion support wall 95J so as to enclose the large-diameter shaft portion 95A from all sides except for the obliquely upper front side. As shown in FIG. 16, the surrounding wall 95F forms an arc portion 95V that is curved in an arc shape from a portion positioned below the support protrusion 95 to a portion positioned rearward, and a step is formed from both ends of the arc portion 95V. A pair of straight portions 95W and 95W extend obliquely upward to the opening 11H. Furthermore, a locking projection 95U protrudes inward from a position away from the protrusion support wall 95J at one end located on the front side of the large-diameter shaft portion 95A on the inner surface of the surrounding wall 95F. The coil portion 14K of the latch holding torsion coil spring 14S is inserted outside the large diameter shaft portion 95A and accommodated between the large diameter shaft portion 95A and the surrounding wall 95F, and extends from one end of the coil portion 14K. The first locking arm 14V is locked inside the locking projection 95U (see FIGS. 5 and 6), while the second locking arm 14W extending from the other end of the coil portion 14K is a step opening 11H. Through and into the latch mechanism housing recess 91B and is locked to the ratchet 14 (see FIG. 5).

  Further, the inner diameter of the coil portion 14K of the latch holding torsion coil spring 14S is sized to be loosely fitted to the large-diameter shaft portion 95A, and the inner surface of the coil portion 14K abuts on the lowermost portion of the large-diameter shaft portion 95A for positioning. Has been. Here, the outer peripheral surface of the large-diameter shaft portion 95A is, as emphasized in FIG. 19, so that the large-diameter shaft portion 95A can be easily extracted from the mold when the first cover 91 is injection-molded. The inclined outer peripheral surface 95S is provided with a draft angle. For this reason, when the coil portion 14K is pressed against the outer peripheral surface of the large-diameter shaft portion 95A, the draft portion may cause the coil portion 14K to shift toward the distal end side of the large-diameter shaft portion 95A. On the other hand, in this embodiment, the coil contact protrusion 95E is formed in the lowest part which the coil part 14K contact | abuts among the outer peripheral surfaces of 95 A of large diameter shaft parts. The coil contact protrusion 95E has a shape that extends in the axial direction of the large diameter shaft portion 95A and bulges downward, and the ridge line located at the lowermost portion of the coil contact protrusion 95E has a large diameter shaft. It is parallel to the central axis of the portion 95A. Then, when the inner surface of the coil portion 14K comes into contact with the coil contact protrusion 95E, the coil portion 14K is positioned without being displaced toward the distal end side of the large-diameter shaft portion 95A. As shown in FIG. 14, a lower end opening 95G is formed below the coil contact protrusion 95E by cutting off a part of the corner where the protrusion support wall 95J and the surrounding wall 95F intersect. .

  As shown in FIG. 13, a central opening 95Y communicating with the inside of the large-diameter shaft portion 95A is formed on the outer surface of the projecting portion support wall 95J, and a plurality of support shaft portion reinforcing ribs 95T are radiated from the central opening 95Y. It extends in a shape. More specifically, among the plurality of support shaft portion reinforcing ribs 95T, one end of the support shaft portion reinforcing rib 95T around the central opening 95Y extends diagonally forward and downward from the central opening 95Y, while the other end of the supporting shaft portion reinforcing rib 95T reinforces the support shaft portion. The rib 95T extends obliquely rearward and upward from the central opening 95Y at a position that is approximately 180 degrees away from the support shaft portion reinforcing rib 95T at one end, and the other plurality of support shaft portion reinforcing ribs 95T have one end and the other end. The supporting shaft portion reinforcing ribs 95T and 95T are distributed and arranged at positions avoiding the lower end opening 95G. In addition, the both ends of the longitudinal direction of each support shaft part reinforcing rib 95T are rounded so that it may become gradually low toward the tip of a longitudinal direction, respectively.

  As shown in FIG. 17, the support cylinder portion 96 has a shape provided with a tip inclined surface 96S by obliquely cutting the tip of the cylindrical body protruding from the second component support wall 90C, and as shown in FIG. A through hole 96 </ b> A is formed on the center of the support cylinder portion 96 in the second component support wall 90 </ b> C. The tapping screw N2 is tightened in the hole 95D through the through hole 96A in a state where the small meridian portion 95C of the support protrusion 95 is inserted inside the support cylinder portion 96, and the support protrusion 95, the support cylinder portion 96, The open lever rotation support shaft portion 97 is configured from the above. As shown in FIG. 17, the second component support wall 90 </ b> C is formed with an annular ridge 83 projecting on a concentric circle around the support cylinder portion 96, and a plurality of reinforcing ribs 84 are radiated from the annular ridge 83. It extends in a shape. Further, the reinforcing ribs 84 have a smaller amount of protrusion from the second component support wall 90 </ b> C than the annular protrusion 83. Then, as shown in FIG. 18, the support cylinder portion 96 of the open lever rotation support shaft portion 97 is inserted into the through hole 17F of the outside handle interlocking lever 17 up to the base end portion thereof, and the opening edge of the through hole 17F is inserted. Is addressed to the annular ridge 83. The coil portion 18 </ b> K of the handle interlocking lever torsion coil spring 18 is inserted outside the support cylinder portion 96.

  This completes the description of the configuration of the door lock device 10 of the present embodiment. Next, the effect of the door lock device 10 will be described. As described above, in the door lock device 10 of the present embodiment, a plurality of parts are provided on the back side peripheral portion of the open lever rotation support shaft portion 97 that rotatably supports the outside handle interlocking lever 17 in the first component support wall 11C. Since the support shaft portion reinforcing rib 95T is formed so as to protrude, the strength of the rising portion of the open lever rotation support shaft portion 97 in the first component support wall 11C is increased and the load acting on the open lever rotation support shaft portion 97 is prevented. Durability is improved. As a result, it is possible to prevent the entire open lever rotation support shaft portion 97 from being inclined, and to prevent the occurrence of problems that the rotation resistance of the outside handle interlocking lever 17 is increased or that abnormal noise is generated. In addition, since the plurality of support shaft portion reinforcing ribs 95T extend in a radial pattern, the first component support wall 11C has durability against loads in both the vertical and horizontal directions at the rising portion of the open lever rotation support shaft portion 97. Can be improved. Further, the durability of the protrusion support wall 95J against the impact force from the side surface of the vehicle can be increased by reinforcing the protrusion support wall 95J with the support shaft portion reinforcing rib 95T.

  In addition to the outside handle interlocking lever 17, the open lever rotation support shaft 97 is also used to support the handle interlocking lever torsion coil spring 18 and the latch holding torsion coil spring 14S. Compared with the case where it supports, the door lock apparatus 10 can be made into a compact structure. Further, since the coil portion 14K of the latch holding torsion coil spring 14S is surrounded from the outside by the surrounding wall 95F formed to project from the first component support wall 11C, the support of the coil portion 14K is stabilized.

  Further, the open lever rotation support shaft portion 97 has a high strength because it is in a doubly supported beam state between the first component support wall 11C and the second component support wall 90C. The second component support wall 90 </ b> C is provided with an annular ridge 83 that surrounds the entire support cylinder portion 96 constituting the open lever rotation support shaft portion 97 from the side. Since the opening edge of the through-hole 17F in the interlocking lever 17 is addressed, for example, even if a burr remains at the edge portion of the through-hole 17F, the burr is received in an annular gap between the annular protrusion 83 and the support cylinder portion 96. As a result, the outside handle interlocking lever 17 rotates smoothly. Furthermore, since the support cylinder part 96 is cut diagonally so as to have the tip inclined surface 96S, the small meridian part 95C of the support protrusion 95 can be gradually inserted into the support cylinder part 96, Insertion work becomes easy. In addition, since the second component support wall 90C is provided with reinforcing ribs 84 extending radially from the annular protrusion 83, the strength of the entire second component support wall 90C is increased and acts on the support cylinder portion 96. The durability against the load to be improved. This can also prevent the problem that the rotational resistance of the outside handle interlocking lever 17 is increased or abnormal noise is generated.

[Other Embodiments]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications other than those described above without departing from the scope of the invention.

(1) In the embodiment, the support shaft portion reinforcing rib 95T is formed on the outer surface of the projecting portion support wall 95J. For example, as shown in FIG. 20, the support shaft portion reinforcing rib 96T according to the present invention is provided. Alternatively, the protrusion support wall 95J may be formed on the inner surface.

(2) In the above-described embodiment, the plurality of support shaft portion reinforcing ribs 95T extend radially, but may extend in the vertical direction, may extend in the horizontal direction, or may be formed in a lattice shape. May be.

(3) In the above-described embodiment, the coil abutment ridge is provided so that the coil portion 14K of the latch holding torsion coil spring 14S does not shift in the axial direction of the large-diameter shaft portion 95A due to the draft angle of the large-diameter shaft portion 95A. 95E, for example, as shown in FIG. 21, the latch holding torsion coil spring 14S protrudes downward from the boundary portion between the large diameter shaft portion 95A and the small meridian shaft portion 95C in the support protrusion 95. The coil portion 14K may be provided with a locking projection 95K that is locked to the coil portion 14K so as to prevent the coil portion 14K from coming off from the large-diameter shaft portion 95A.

(4) The open lever rotation support shaft portion 97 of the above embodiment has a double-supported beam structure in which both end portions are supported by the first component support wall 11C and the second component support wall 90C. The rotation support shaft portion 97 may protrude in a cantilever shape from the first component support wall 11C.

DESCRIPTION OF SYMBOLS 10 Door lock apparatus 10R Latch mechanism 11 Support body 11C 1st component support wall (component support wall)
13 Latch 14 Ratchet 14K Coil part 14S Torsion coil spring for latch holding 16Z Lock switching mechanism 17 Outside handle interlocking lever (handle interlocking lever)
90C Second part support wall (part support auxiliary wall)
95 support protrusion 95E coil contact protrusion 95F surrounding wall 95J protrusion support wall 95T, 96T support shaft reinforcing rib 96 support cylinder 96A through hole 95S inclined outer peripheral surface 96S tip inclined surface 97 open lever rotation support shaft

Claims (7)

A lock switching mechanism is provided between a latch mechanism that latches the door of the vehicle in a closed state and a handle interlocking lever that rotates by receiving a handle operating force generated by an operation of a door handle provided on the door. The handle operating force is transmitted to the latch mechanism to unlock the door, and the handle operating force from the handle interlocking lever is blocked and the door latch cannot be released. In the door lock device that can be switched to the locked state,
A resin support body fixed to the door and assembled with the latch mechanism;
A component support wall provided on the support body and disposed opposite to a door end wall on the opposite side of the center of rotation of the door;
A lever rotation support shaft portion that protrudes from the component support wall, is inserted into a through hole of the handle interlocking lever, and rotatably supports the handle interlocking lever;
An enclosure wall that protrudes from the component support wall and surrounds a part of the lever rotation support shaft portion in the circumferential direction at the end of the component support wall side from the side;
A coil portion that is inserted through the lever rotation support shaft portion and is accommodated between the surrounding wall and the lever rotation support shaft portion; A latch holding torsion coil spring that biases the mechanism toward the side that latches the door ;
An inclined outer peripheral surface formed on the lever rotation support shaft portion and having a draft angle;
A door lock provided with a coil abutting ridge protruding from a portion of the circumferential direction of the inclined outer peripheral surface that abuts on the coil portion and having a ridge line parallel to the axial direction of the lever rotation support shaft portion apparatus. An opening is provided in the surrounding wall;
The door lock device according to claim 1, wherein the latch holding torsion coil spring is provided with a locking arm portion locked to the opening. The coil portion is disposed at a position substantially concentric with the arc portion of the surrounding wall,
3. The door lock device according to claim 1, wherein the lever rotation support shaft portion is disposed at a position eccentric to a side approaching the arc portion inside the coil portion. The lever rotation support shaft portion and the surrounding wall protrude in a horizontal direction from the component support wall,
The door lock device according to any one of claims 1 to 3, wherein a through hole is formed in a lower end portion of the surrounding wall. A component support auxiliary wall provided on the support body and facing the component support wall;
The lever rotation support shaft portion formed by fitting the tip end portion of the support protrusion formed on the component support wall to the support tube portion formed to protrude on the component support auxiliary wall;
An annular ridge that is formed to project from the component support auxiliary wall and surrounds the entire support tube portion from the side,
5. The apparatus according to claim 1, further comprising: the handle interlocking lever having the through hole inserted through the support cylinder portion and having an opening edge of the through hole addressed to the annular protrusion. The door lock device according to item. 6. The door lock device according to claim 5, further comprising auxiliary wall reinforcing ribs that are formed to project from the component supporting auxiliary wall and are lower than the annular ridge and extend radially from the annular ridge. A component support auxiliary wall provided on the support body and facing the component support wall;
The lever rotation support shaft portion formed by fitting the tip end portion of the support protrusion formed on the component support wall to the support tube portion formed to protrude on the component support auxiliary wall;
The door lock device according to any one of claims 1 to 4, further comprising a tip inclined surface formed at a tip of the support tube portion and obliquely crossing a central axis of the support tube portion.

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