WO2021095276A1

WO2021095276A1 - Door latch device

Info

Publication number: WO2021095276A1
Application number: PCT/JP2020/002711
Authority: WO
Inventors: 慎太郎大川; 田村　俊輔
Original assignee: 三井金属アクト株式会社
Priority date: 2019-11-12
Filing date: 2020-01-27
Publication date: 2021-05-20
Also published as: JP2021075942A; JP7283015B2

Abstract

In order to reliably release an engagement state with a striker after having suppressed conditions in which assembly operations become more complex and manufacturing cost increases, the present invention is configured so as to comprise a latch member 10, a ratchet 20, and a secondary pole 30, the ratchet 20 being provided with a link member 120 that engages, in an engagement position, with the secondary pole 30 in a blocked position, whereby rotation of the link member 120 to a disengagement position is limited, and a main pole 220 that is supported by the link member 120 so as to be capable of tilting, and the secondary pole 30 contacting the link member 120 when the secondary pole 30 is rotated from the blocked position to an unblocked position in a state where the link member 120 is positioned in the engagement position and allowing the link member 120 to rotate to the disengagement position.

Description

Door latch device

The present invention relates to a door latch device, and more particularly to a door latch device including a main pole and a secondary pole, in which the main pole is engaged with the latch member to maintain the meshed state between the latch member and the striker.

A door latch device provided with a main pole and a secondary pole is provided in order to reduce the operating force when releasing the meshing state with the striker. That is, in this type of door latch device, a ratchet that engages with the latch member and has a main pole that is tiltably supported by the link member and the link member is applied, and the block position and the non-block with respect to the link member are applied. A secondary pole is provided to displace the position. According to this door latch device, if the secondary pole is rotated from the block position to the non-block position to release the engagement state between the link member and the secondary pole, the engagement state between the main pole and the latch member is released. And it becomes possible to open the door. That is, instead of directly applying the operating force to the main pole engaged with the latch member, the operating force is applied to the secondary pole arranged at the block position with respect to the link member supporting the main pole. It has become. Therefore, even when a seal member having a large elastic force is interposed between the vehicle body and the door, the reaction force of this seal member does not act between the link member and the secondary pole, which is large. It is possible to release the meshing state with the striker without requiring an operating force (see, for example, Patent Document 1).

U.S. Pat. No. 9,476,230

By the way, in a door latch device including a main pole and a secondary pole, when the secondary pole is arranged in a non-block position while the reaction force of the seal member is applied to the main pole, the latch member is caused by the reaction force of the seal member. It is configured to shift to the disengaged state. For this reason, the main pole is a latch member even when the secondary pole is arranged in a non-block position due to a situation such as a reduction in the reaction force of the seal member in a low temperature state or a case where the seal member is attached to the vehicle body. It is possible that the situation may remain engaged with. In Patent Document 1 described above, a stub is provided on the link member, an arm that abuts on the stub is provided on the rotation axis of the link member, and the link member is forced by driving the arm after the secondary pole is arranged at a non-block position. It is designed to solve the above-mentioned problem. However, in the door latch device described in Patent Document 1 having a dedicated part for forcibly rotating the link member, new problems such as complicated assembly work and an increase in manufacturing cost occur. can not deny.

In view of the above circumstances, it is an object of the present invention to provide a door latch device capable of surely releasing the meshing state with the striker while suppressing the situation where the assembly work becomes complicated and the manufacturing cost increases. ..

In order to achieve the above object, the door latch device according to the present invention is rotatably arranged so as to be displaced to the meshing position and the non-meshing position, and the latch member capable of meshing with the striker at the meshing position and the meshing position. A ratchet that is displaced with respect to the latch member in the engaged state and the non-engaged state, and restricts the rotation of the latch member to the non-meshing position when the engaged state is reached, and a block position and a non-block position. The ratchet is rotatably disposed so as to be displaced into an engaged position and a non-engaged position, and the block is provided at the engaged position. Engagement with the secondary pole at the position limits rotation to the non-engaged position, while rotation to the non-engaged position is possible when the secondary pole is displaced to the non-blocking position. The link member is slidably supported by the link member, and when the link member is arranged at the engaging position, the link member can be engaged with the latch member at the meshing position, while the link member is unengaged. A door latch device including a main pole that can release the engagement state with the latch member when arranged at the matching position, and the secondary pole has the link member arranged at the engaging position. It is characterized in that when it rotates from the block position to the non-block position in the state of being in contact with the link member, the link member is rotated to the non-engagement position.

Further, the present invention is characterized in that, in the door latch device described above, the secondary pole rotates the link member to the non-engagement position only when the secondary pole passes through the non-block position and further rotates from the block position. And.

Further, the present invention is characterized in that, in the door latch device described above, the main pole and the latch member are engaged with each other via a resin molded portion provided on at least one of them.

Further, in the door latch device described above, the link member is characterized in that a base portion made of a metal member is insert-molded into a cover member made of a resin member and engaged with the secondary pole via the base portion. To do.

Further, the present invention is characterized in that, in the door latch device described above, the cover member has a plurality of cover portions connected to each other by a non-linear connecting portion.

According to the present invention, since the link member is forcibly rotated by abutting the secondary pole without adding a separate part, it is possible to suppress the situation where the assembly work is complicated and the manufacturing cost is increased. After that, it is possible to surely release the meshing state with the striker.

FIG. 1 is a perspective view of the appearance of the door latch device according to the embodiment of the present invention as viewed from the inside rear of the vehicle. FIG. 2 is a perspective view of the inside of the door latch device shown in FIG. 1 as viewed from the inside rear of the vehicle. 3A and 3B show the latch unit of the door latch device shown in FIG. 1 as viewed from the rear side of the vehicle. FIG. 3A is a view in which the latch member is arranged in a non-meshing position, and FIG. 3B is a view in which the latch member is engaged. It is the figure of the state which is arranged in the position. FIG. 4 is a view of the latch unit of the door latch device shown in FIG. 1 as viewed from the front side of the vehicle. FIG. 5 is a perspective view of the latch unit of the door latch device shown in FIG. 1 as viewed from the lower side behind the vehicle. 6A and 6B show a link member and a main pole constituting the ratchet of the latch unit shown in FIG. 5, in which FIG. 6A is a perspective view seen from the lower side behind the vehicle, and FIG. 6B is the upper side behind the vehicle. It is a figure seen from. 7A and 7B show a ratchet link member shown in FIG. 6, where FIG. 7A is a perspective view seen from the rear side of the vehicle, FIG. 7B is a perspective view seen from the front side of the vehicle, and FIG. 7C is a metal material. A perspective view of only the link base made of the vehicle from the rear side of the vehicle, and FIG. 3D is a perspective view of only the link cover member made of the resin material seen from the rear side of the vehicle. 8A and 8B show the main pole of the ratchet shown in FIG. 6, where FIG. 8A is a perspective view seen from the rear side of the vehicle, and FIG. 8B is a perspective view of only the base of the pole made of a metal material as viewed from the rear side of the vehicle. It is a figure. 9A and 9B show a secondary pole of the latch unit shown in FIG. 5, where FIG. 9A is a perspective view seen from the rear side of the vehicle, and FIG. 9B is a view of only the base of the pole made of a metal material from the rear side of the vehicle. It is a perspective view. FIG. 10 is a view of the latch unit shown in FIG. 5 from the rear side of the vehicle, and FIG. 10A is a diagram showing a state in which the secondary pole is rotated to a non-block position from the state shown in FIG. 3B, (b). ) Is a state in which the main pole is separated from the latch member, and (c) is a state in which the output protrusion is in contact with the non-contact protrusion of the link member due to the rotation of the secondary pole beyond the non-block position. (D) is a diagram showing a state in which the link member is rotated by the secondary pole.

Hereinafter, preferred embodiments of the door latch device according to the present invention will be described in detail with reference to the accompanying drawings.
1 and 2 show a door latch device according to an embodiment of the present invention. Although not shown in the figure, the door latch device illustrated here is mounted on the side door of the front hinge located on the right side of the four-wheeled vehicle, and is opened by the remote control key possessed by the user or by the door handle. According to this, the meshing state with the striker S provided on the vehicle body is released. The door latch device is provided with a latch unit 2 inside the housing 1. As shown in FIGS. 2 to 5, the latch unit 2 includes a latch member 10, a ratchet 20, and a secondary pole 30.

The latch member 10 has a plate-like shape of a thick plate having a striker contact portion 11 and a hook portion 12, and is rotatably arranged on the latch body 3 via a latch shaft 13 along the front and rear of the vehicle. .. In the illustrated example, the latch shaft 13 is provided in a portion above the striker entry groove 4 (FIG. 1) provided in the housing 1 and on the outer side of the vehicle. The striker contact portion 11 and the hook portion 12 extend from the latch shaft 13 toward the periphery, and the hook portion 12 is arranged so as to be located on the vehicle inner side of the striker contact portion 11. The latch member 10 is urged in the release direction (clockwise in FIG. 3) by a latch spring (not shown) provided between the latch member 10 and the latch body 3, and is in the non-meshing position shown in FIG. 3A in the meshing standby state. Be maintained. The non-meshing position is a state in which the hook portion 12 retracts upward with respect to the striker entry groove 4, while the striker contact portion 11 is arranged on the inner side (right side in FIG. 3) of the striker entry groove 4. Is. When the side door is closed and the striker S enters the striker entry groove 4, the striker S comes into contact with the striker contact portion 11, and the latch member 10 rotates counterclockwise against the spring force of the latch spring. As shown in FIG. 3B, the hook portion 12 moves to the meshing position across the open end portion side of the striker entry groove 4. However, if the latch member 10 simply moves to the meshing position, the latch member 10 rotates clockwise due to the spring force of the latch spring and the reaction force of the sealing member that bends when the side door is closed, and the striker S enters the striker. The side door will be returned to the open state by deviating from the groove 4.

The ratchet 20 maintains the latch member 10 in the meshing position against the spring force of the latch spring, and includes a link member 120 and a main pole 220.
Like the latch member 10, the link member 120 has a plate-like shape of a thick plate, and is rotatably arranged on the latch body 3 via a link shaft 121 along the front and rear of the vehicle. The link shaft 121 is provided below the striker entry groove 4 and on the vehicle interior side of the latch shaft 13. The link member 120 is provided with an engaging protrusion 122 and a contacted protrusion 123. The engaging protrusion 122 protrudes from the link shaft 121 toward the outside of the vehicle so as to gradually downward. The contacted protrusion 123 extends downward from a portion slightly inward of the vehicle with respect to the link shaft 121, and then extends so as to bend toward the outside of the vehicle. The link member 120 is maintained at an engaging position in which the contacted protrusion 123 extends substantially vertically downward from the link shaft 121 by a link spring 124 interposed between the link member 120 and the latch body 3. When an external force is applied to the link member 120 arranged at the engaging position and the link member 120 is rotated clockwise in FIG. 3, the link spring 124 bends and the link member 120 is arranged at the non-engaging position. When the external force is removed, the link member 120 returns to the engaging position due to the spring force of the link spring 124.

The main pole 220 is supported by the link member 120 via the support shaft portion 221 at the base end, and is located on the vehicle inner side of the tip portion with respect to the hook portion 12 of the latch member 10 arranged at the meshing position. It is arranged so that it can come into contact with the surface to be formed. In the present embodiment, with respect to the engaging protrusion 122 of the link member 120 arranged at the engaging position, the main pole 220 is centered on the support shaft portion 221 along the front and rear of the vehicle at the portion to be the upper surface of the intermediate portion. It is supported so that it can be tilted. An engaging spring 21 that rotates the main pole 220 counterclockwise with respect to the link member 120 is interposed between the main pole 220 and the link member 120. The tilt range of the main pole 220 with respect to the link member 120 is limited between the engaging protrusion 122 and the regulating protrusion 125. A stopper piece 222 that comes into contact with the latch body 3 when rotated counterclockwise in FIG. 3 is provided at the tip of the main pole 220. A cushion material 5 for preventing hitting noise is provided at a portion of the latch body 3 where the stopper piece 222 of the main pole 220 abuts.

Like the latch member 10, the secondary pole 30 has a plate-like shape of a thick plate, and is rotatably arranged on the latch body 3 via a pole shaft 31 along the front and rear. The pole shaft 31 is provided below the support shaft portion 221 of the main pole 220 and at a position where the secondary pole 30 can engage with the engaging protrusion 122 of the link member 120. A first cam portion 32 and a second cam portion 33 are provided on the peripheral surface of the secondary pole 30, and an output protrusion 34 and an input arm portion 35 are provided.

The first cam portion 32 comes into contact with the engaging protrusion 122 of the link member 120 arranged at the engaging position when the secondary pole 30 is rotated counterclockwise in FIG. 3 and arranged at the block position. This prevents the link member 120 from rotating to the non-engaged position. The second cam portion 33 is inclined so that the distance from the pole shaft 31 decreases as the distance from the first cam portion 32 increases, and the secondary pole 30 rotates clockwise in FIG. 3 to a non-block position. When arranged, it faces the engaging protrusion 122 of the link member 120 and allows the link member 120 to rotate to a non-engaging position. The secondary pole 30 is urged counterclockwise in FIG. 3 by the spring force of a regulation spring (not shown) provided between the secondary pole 30 and the input arm portion 35 described later abuts on the latch body 3. By doing so, it is maintained in the block position.

The output protrusion 34 extends downward from the pole shaft 31 when the secondary pole 30 is arranged at the block position. When the secondary pole 30 rotates clockwise beyond the non-block position, the output protrusion 34 abuts on the contacted protrusion 123 of the link member 120 arranged at the engaging position, and causes the link member 120 to come into contact with the contacted protrusion 123. It can be rotated towards a non-engaged position. The input arm portion 35 extends along the radial direction from the pole shaft 31, and has an input shaft portion 36 at the extending end portion. The input shaft portion 36 forms a columnar shape protruding from the extending end portion of the input arm portion 35 toward the front of the vehicle.

As is clear from FIGS. 4 and 5, a hook portion 6a provided at one end of the ratchet lever 6 is engaged with the input shaft portion 36 of the input arm portion 35. The ratchet lever 6 is supported by the latch body 3 so as to be rotatable around a lever axis 6b along the front and rear of the vehicle. As shown in FIG. 2, the input end portion 6c of the ratchet lever 6 is provided so as to be moved upward when the open lever 40 opens the door and when the open link 50 opens the door. Has been done. The door opening operation of the open lever 40 means that when the electric motor 41 is driven by the opening operation of the remote control key, the electric motor 41 rotates about the shaft portion 43 via the cam wheel 42, and the output end portion 44 moves upward. is there. The driving of the electric motor 41 will continue until it is detected that the side door is actually opened with respect to the vehicle body. The door opening operation of the open link 50 is to move the anti-panic lever 51 upward when the door handle is opened while the open link 50 is arranged at the unlocked position. The upward movement of the anti-panic lever 51 is an amount corresponding to the operation amount of the door handle, and is continued until the opening operation of the door handle is stopped.

6 to 9 show the detailed configurations of the link member 120, the main pole 220, and the secondary pole 30 described above. As shown in FIGS. 6 and 7, the link member 120 includes a link base (base) 120M made of a metal material and a link cover member (cover member) 120P made of a resin material. More specifically, it is integrated by molding the link cover member 120P around the link base 120M (= insert molding). The link base 120M is formed by integrally molding the above-mentioned engaging protrusion 122 and the contacted protrusion 123. On the other hand, the link cover member 120P has an upper cover portion 120P1 that covers the engaging protrusion 122 and a lower cover portion 120P2 that covers the contacted protrusion 123, and these upper cover portion 120P1 and the lower cover portion 120P2. Is connected by a connecting portion 120P3. The connecting portion 120P3 extends in a non-linear manner and connects between the upper cover portion 120P1 and the lower cover portion 120P2. In the illustrated example, the portion extending linearly from the upper cover portion 120P1 and the portion extending linearly from the lower cover portion 120P2 are connected to each other by a curved portion, and the upper cover portion 120P1 and the lower cover portion 120P2 are connected to each other. It is possible to elastically absorb this when the mutual interval with and increases or decreases. The portion of the upper cover portion 120P1 that comes into contact with the secondary pole 30 is formed so that the link base portion 120M of the metal material is exposed to the outside.

As shown in FIGS. 6 to 9, the main pole 220 and the secondary pole 30 have a pole base (base) 220M and 30M made of a metal material and a pole cover member made of a resin material, respectively, like the link member 120. Cover member) 220P, 30P are provided. Regarding the main pole 220, a protruding portion 220a made of a resin material is formed at the tip portion that contacts the metal portion of the latch member 10, and the protruding portion 220a only abuts on the latch member 10. Regarding the secondary pole 30, the first cam portion and the second cam portion that come into contact with the link base portion 120M exposed to the outside are composed of the pole base portion 30M made of a metal material, and the other parts are formed by the pole cover member 30P. It's covered. In the present embodiment, the pole base portion 30M is provided in the portion corresponding to the input arm portion 35 and the input shaft portion 36, while the portion corresponding to the output protrusion portion 34 is composed of only the pole cover member 30P made of a resin material. is there. The main pole 220 and the secondary pole 30 are also integrated by molding the

pole cover members

220P and 30P around the pole bases 220M and 30M (= insert molding).

The door latch device configured as described above is in the meshing standby state shown in FIG. 3A so that the striker S can enter when the side door is open. That is, in the meshing standby state, the latch member 10 is in the non-meshing position, and the striker contact portion 11 of the latch member 10 is arranged so as to cross the striker entry groove 4. At this time, in the ratchet 20, the link member 120 is arranged at the engaging position. Therefore, the main pole 220 is urged by the spring force of the engaging spring 21, and the tip end portion is in contact with the peripheral surface of the latch member 10. Further, the output end 44 of the open lever 40 and the anti-panic lever 51 of the open link 50 are both arranged at positions below the input end 6c of the ratchet lever 6. As a result, the secondary pole 30 is in a state of being arranged at the block position by the spring force of the regulation spring.

When the striker S enters the striker entry groove 4 from the vehicle inner side on the left side in FIG. 3A by closing the side door from this meshing standby state, the latch member 10 moves through the striker contact portion 11. The tip of the main pole 220 that rotates counterclockwise and comes into contact with the peripheral surface of the latch member 10 engages with the striker contact portion 11 to enter a half-latch state. When the striker S continues to enter, the latch member 10 is in the meshing position as shown in FIG. 3B, and the tip of the main pole 220 is engaged with the hook portion 12 so that the latch member 10 is in the meshing position. Maintained (full latched state). As a result, the door latch device and the striker S are in a meshed state, and the side door is maintained in a closed state with respect to the vehicle body. During the transition from the half-latch state to the full-latch state, the main pole 220 rotates clockwise once against the spring force of the engaging spring 21 by abutting on the hook portion 12, and then the hook portion 12 passes through. Later, it rotates counterclockwise due to the spring force of the engaging spring 21, and is in a state of being engaged with the hook portion 12.

In the full latch state described above, the seal member (not shown) provided between the vehicle body and the side door is in a bent state to prevent water such as rainwater from entering between the two. , The reaction force of the seal member is applied to the contact portion between the latch member 10 and the main pole 220. As is clear from the figure, the support shaft portion 221 of the main pole 220 is on the lower side with respect to the straight line connecting the link shaft 121 of the link member 120 and the tip portion of the main pole 220 that abuts on the latch member 10. Is located in.

From this state, when the electric motor 41 is driven by, for example, opening the remote control key, the output end 44 of the open lever 40 moves upward, so that the ratchet lever 6 rotates clockwise in FIG. 3, and the secondary pole 30 Starts rotating clockwise against the spring force of the regulation spring.

As shown in FIG. 10A, when the secondary pole 30 rotates to the non-blocking position, the second cam portion 33 faces the engaging protrusion 122 of the link member 120, and the link member 120 is not. It is possible to rotate to the engagement position.

Since the engaging spring 21 is provided between the link member 120 and the main pole 220, when the link member 120 can be rotated to the non-engaging position, the spring force of the engaging spring 21 causes FIG. As shown in (b), the main pole 220 is rotated counterclockwise with respect to the link member 120. In reality, since the tip of the main pole 220 is in contact with the latch member 10, the link member 120 is relatively rotated toward the non-engaged position by the spring force of the engaging spring 21. At the same time, in the full latch state, the reaction force of the seal member is applied to the main pole 220 via the hook portion 12 of the latch member 10, so that the link member 120 can rotate to the non-engaged position. At that point, the reaction force of the seal member causes the link member 120 to start rotating. As a result, the tip of the main pole 220 is separated from the hook portion 12 of the link member 120, the latch member 10 is rotated clockwise by the spring force of the latch spring and the reaction force of the seal member, and the striker S enters the striker. By deviating from the groove 4, the side door can be opened.

The disengagement operation of the ratchet 20 with respect to the latch member 10 described above does not directly apply an operating force to the main pole 220 engaged with the latch member 10, but rather with respect to the link member 120 supporting the main pole 220. The structure is such that an operating force is applied to the secondary pole 30 arranged at the block position. In addition, in the main pole 220, it is the protruding portion 220a formed of the resin material that engages with the metal portion of the latch member 10, and when the metal materials are brought into contact with each other or when the resin materials are brought into contact with each other. The coefficient of friction between each other can be reduced as compared with the above. Therefore, even when the reaction force of the seal member is large, it is possible to release the meshing state with the striker S without requiring a large operating force. This has the advantage that, for example, the electric motor 41 can be miniaturized.

Here, the reason why the link member 120 rotates to the non-engagement position after the secondary pole 30 rotates to the non-block position is largely due to the reaction force of the seal member as described above. Therefore, depending on the situation such as when the reaction force of the seal member is reduced in a low temperature state or when the seal member is attached to the vehicle body, the main pole 220 is placed even when the secondary pole 30 is arranged in the non-block position. A situation may occur in which the latch member 10 remains engaged. That is, there is a possibility that the side door cannot be opened.

However, in the above-mentioned door latch device, the electric motor 41 is continuously driven until it is detected that the side door is actually opened. Therefore, when the side door is not opened in the state of FIG. 10B, the ratchet lever is used. 6 keeps the secondary pole 30 rotating clockwise. As a result, as shown in FIG. 10 (c), the output protrusion 34 of the secondary pole 30 comes into contact with the contacted protrusion 123 of the link member 120, and the secondary pole 30 keeps this state and the secondary pole 30 watches. It will rotate in the direction. As a result, the link member 120 is forcibly rotated clockwise, and as shown in FIG. 10D, the main pole 220 is arranged at a position greatly separated from the link member 120, so that the latch spring The latch member 10 rotates clockwise due to the spring force and the reaction force of the seal member, and the striker S deviates from the striker entry groove 4, so that the side door can be opened. Moreover, since the link member 120 is configured to be rotated by the secondary pole 30 that engages with the link member 120, it is not necessary to prepare a dedicated component for rotating the link member 120. Therefore, it is possible to surely release the meshing state with the striker S while suppressing the situation where the assembly work becomes complicated and the manufacturing cost increases.

When it is detected that the side door is opened, the electric motor 41 rotates in the opposite direction and the output end 44 of the open lever 40 moves downward, so that the secondary pole 30 is positioned at the block position by the spring force of the regulation spring. After that, the link member 120 returns to the engaging position by the spring force of the link spring 124, and is in the meshing standby state again.

In the above-described embodiment, the door latch device mounted on the side door of the front hinge arranged on the right side of the four-wheeled vehicle is illustrated, but of course, it may be applied to other doors. Further, although only the opening operation using the remote control key is described, it goes without saying that the same function is obtained when the opening operation is performed by the door handle.

10 Latch member 20 Ratchet 30 Secondary pole 30M Pole base 30P Pole cover member 34 Output protrusion 120 Link member 120M Link base 120P Link cover member 120P1 Upper cover 120P2 Lower cover 120P3 Connecting part 122 Engaging protrusion 123 Contact Protrusion 220 Main pole 220M Pole base 220P Pole cover member 220a Projection S striker

Claims

A latch member that is rotatably arranged so as to be displaced to the meshing position and the non-meshing position and can mesh with the striker at the meshing position.
A ratchet that is displaced with respect to the latch member at the meshing position in an engaged state and a disengaged state, and restricts the rotation of the latch member to the non-engaging position when the engaged state is reached.
The ratchet comprises a secondary pole rotatably arranged to displace in block and non-block positions.
It is rotatably arranged so as to be displaced to the engaged and disengaged positions, and the rotation to the non-engaged position is restricted by engaging the secondary pole at the block position at the engaged position. On the other hand, when the secondary pole is displaced to the non-blocking position, a link member capable of rotating to the non-engaging position and a link member.
It is tiltably supported by the link member, and when the link member is arranged at the engaging position, it can engage with the latch member at the meshing position, while the link member is arranged at the non-engaging position. A door latch device provided with a main pole that can be disengaged from the latch member in the event of a case.
The secondary pole comes into contact with the link member when the link member is rotated from the block position to the non-block position while the link member is arranged at the engaging position, and the link member is brought into contact with the non-engaging position. A door latch device characterized by rotating to a position.
The door latch device according to claim 1, wherein the secondary pole rotates the link member to the non-engaged position only when the secondary pole passes through the non-block position and further rotates from the block position.
The door latch device according to claim 1, wherein the main pole and the latch member are engaged with each other via a resin molded portion provided on at least one of them.
The door latch device according to claim 1, wherein a base portion made of a metal member is insert-molded into a cover member made of a resin member, and the link member engages with the secondary pole via the base portion.
The door latch device according to claim 4, wherein the cover member has a plurality of cover portions connected to each other by a non-linear connecting portion.