JP6618820B2 - Door latch device - Google Patents

Description

  The present invention relates to a door latch device.

  Patent Document 1 describes a door latch device used in a door lock device. The door latch device includes a fork and a claw lever that are rotatably arranged on the outer surface of the fence block, and an opening lever that is rotatably arranged on the inner surface of the fence block. The claw lever and the release lever are arranged on the inner and outer surfaces of the fence block so as to rotate around the same axis. Further, the claw lever is provided with a projecting projection that penetrates the fence block and is coupled to the release lever. One of the claw lever and the release lever is rotated, and the other lever is rotated integrally.

JP 2014-95266 A

  There are gaps between the rotating shaft that supports the claw lever on the fence block and the shaft hole, and between the rotating shaft that supports the release lever on the fence block and the shaft hole, in order to realize the rotation of each lever. Is formed. When one lever receives an operating force and tilts with respect to the fence block due to this gap, the other lever that rotates integrally also tilts with respect to the fence block. If the tilted lever interferes with the fence block or the axis of the rotary shaft and the axis of the shaft hole are misaligned, there is a possibility that both levers will malfunction. Therefore, even if one lever tilts with respect to the fence block, the other lever does not interfere with the fence block. Therefore, it is necessary to set a play larger than the gap that can be tolerated. As a result, there is an inconvenience that when the door of the vehicle is closed, the opening lever vibrates and abnormal noise is generated.

  An object of the present invention is to provide a door latch device that can reduce abnormal noise when a door is closed while preventing malfunction of a claw lever or an opening lever.

  The present invention provides a fence block in which an insertion groove into which a striker can be inserted is formed, a first stopper that is disposed at a striker holding position of the insertion groove and has elasticity to receive the striker, and one surface of the fence block Is disposed rotatably on one side of the insertion groove, and is rotatably disposed on the other side of the insertion groove on the one surface side of the fence block, the fork capable of engaging the striker, A claw lever that can be engaged with and disengaged from the fork to hold the fork in a state of being engaged with the striker, and a claw spring that biases the claw lever toward an engagement position that can be engaged with the fork A second stopper for receiving the claw lever biased to the engagement position, and the first stopper so as to rotate integrally with the claw lever. An opening lever disposed on the other surface of the fence block and the first stopper are disposed on the other surface side from the one surface side of the fence block through a through hole formed in the fence block. And a third stopper for receiving the release lever biased by the claw spring.

  According to this door latch device, when the striker enters the insertion groove of the fence block by closing the door of the vehicle, the striker is engaged with the fork. Further, when the striker enters the holding position of the insertion groove, the striker comes into contact with the first stopper, so that the impact due to the contact can be absorbed and the generation of abnormal noise can be reduced. Moreover, the claw lever compresses the claw spring by rotating to the non-engagement position by the rotation of the fork. Thereafter, the claw lever is rotated to the engagement position by the urging force of the claw spring to hold the fork in a state of being engaged with the striker. At this time, the claw lever contacts the second stopper, and the release lever that rotates integrally with the claw lever contacts the third stopper. Therefore, in order to prevent malfunction of the claw lever or the release lever, even when play is set around the shaft that is pivotally supported by the fence block or at the connecting portion, vibration of each lever can be suppressed and a difference generated from each lever can be suppressed. Sound can be reduced.

  According to the present invention, the second stopper for receiving the claw lever and the third stopper for receiving the release lever are provided, so that play can be set for each lever to prevent malfunction, and when the door is closed. Vibration and abnormal noise of each lever can be reduced. In addition, the third stopper is formed on the first stopper arranged on the one side of the fence block and is arranged on the other side of the fence block through the through hole, thus preventing an increase in the number of parts constituting the door latch device it can. Therefore, the quality of the door latch device can be improved while suppressing an increase in the manufacturing cost of the door latch device.

The perspective view which shows the door lock apparatus using a door latch apparatus. The rear view which shows the unlocking state of a door lock apparatus. The rear view which shows the locked state of a door lock apparatus. The exploded perspective view of a door latch device. The front view of a door latch apparatus. The rear view of a door latch apparatus. The front view which shows the open operation state of a door latch apparatus. The front view which shows the open state of a door latch apparatus. Sectional drawing which shows the relationship between a claw lever and an open lever. The perspective view which shows the relationship between a claw lever and an open lever. The disassembled perspective view of a fence block and a stopper. The front view which shows the attaching part of a 1st stopper and a 3rd stopper. The perspective view which shows the attachment part of a 1st stopper and a 3rd stopper. The front view which shows the attaching part of a 2nd stopper. The rear perspective view which shows the attaching part of a 3rd stopper. The rear perspective view which shows the relationship between a 3rd stopper and an open lever. The front view which shows the rotation process of a claw lever. FIG. 11B is a rear view showing the state of the release lever at the same rotational position as FIG. 11A.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 2B show a door lock device 10 using a door latch device 20 according to the present embodiment. The door latch device 20 is attached to the housing 11 of the door lock device 10, and is disposed on the vehicle door 1 via the housing 11. The housing 11 is L-shaped in plan view, the first mounting portion 12 is disposed along the inner panel 2 side of the door 1, and the second mounting portion 13 to which the door latch device 20 is attached is along the end surface 3 of the door 1. Has been placed. In the following description, the vehicle length direction of the door 1 is referred to as the X direction, the vehicle height direction of the door 1 is referred to as the Y direction, and the vehicle width direction of the door 1 is referred to as the Z direction.

  The door latch device 20 is engaged with the striker 5 when the opened door 1 is closed and the striker 5 attached to the vehicle body enters the door latch device 20 (see FIG. 4A). As a result, the door 1 is held so as not to be openable with respect to the vehicle body. Further, the door latch device 20 is configured such that when the door lock device 10 is in the unlocked state shown in FIG. 2A and the door handle disposed on the door 1 is opened, the open lever 15 constituting the opening mechanism of the door lock device 10 and The opening operation is performed via the link 16. Thereby, the door 1 can be opened with respect to the vehicle body by releasing the engagement between the door latch device 20 and the striker 5. When the door lock device 10 is in the locked state shown in FIG. 2B, the door latch device 20 cannot be opened via the open lever 15 and the link 16 even if the door handle is opened. Therefore, the door 1 is maintained in a state where it cannot be opened with respect to the vehicle body.

  Switching between the unlocked state and the locked state of the door lock device 10 is performed by a switching lever 18 constituting a switching mechanism. The switching mechanism is connected to, for example, a cylinder lock disposed on the door 1. As shown in FIG. 2A, when the switching lever 18 is rotated counterclockwise by the unlocking operation of the cylinder lock, the unlocked state in which the link 16 can come into contact with the release lever 70 of the door latch device 20 is achieved. As shown in FIG. 2B, when the switching lever 18 is rotated clockwise by the locking operation of the cylinder lock, the link 16 cannot be brought into contact with the release lever 70. The configuration of the link 16 that is an opening operation member of the door latch device 20 differs depending on the door lock device 10.

(Overall configuration of door latch device)
As shown in FIGS. 3 to 4B, the door latch device 20 includes a fence block 22 attached to the second mounting portion 13. Further, the door latch device 20 includes a fork 55 and a claw lever 62 that are rotatably arranged on the outer surface (one surface) 23 of the fence block 22 located on the end surface 3 side of the door 1. Further, the door latch device 20 includes an opening lever 70 that is rotatably disposed on the inner surface (other surface) 24 of the fence block 22. The open lever 15 is rotatably disposed on the first placement portion 25 of the inner surface 24 of the fence block 22, and the switching lever 18 is rotatably disposed on the second placement portion 26 of the inner surface 24 of the fence block 22. One end of the link 16 is rotatably attached to the open lever 15 and the other end is attached to the switching lever 18 via a biasing spring.

  1 and 7 together, the fence block 22 is provided with an insertion groove 27 into which the striker 5 can be inserted. The insertion groove 27 is a concave groove that is recessed from the outer surface 23 side toward the inner surface 24 side. The inner side of the insertion groove 27 in the Z direction is open, and the outer side of the insertion groove 27 in the Z direction is closed. An insertion groove 46 having the same shape as the insertion groove 27 viewed from the X direction is formed in the metal cover plate 45 disposed on the outer surface 23 of the fence block 22.

  As most clearly shown in FIG. 4A, the fork 55 is pivotally supported via a first rotating shaft 56 on the upper side (one side) of the insertion groove 27 in FIG. 4A. The fork 55 is provided with a fixing hole 57 that penetrates and fixes the first rotation shaft 56. The first rotating shaft 56 passes through the fence block 22 through the first shaft hole 30 formed on the closed end 29 side of the insertion groove 27. The outer end of the first rotating shaft 56 is attached to the first mounting hole 47 of the cover plate 45, and the inner end of the first rotating shaft 56 is the first of the metal set plate 50 on the inner surface 24 side of the fence block 22. It is attached to the attachment hole 51.

  The fork 55 is formed with an engaging groove 58 that allows the striker 5 to enter and engage. The engagement groove 58 expands in a direction away from the fixing hole 57, and an end portion is opened. As shown in FIG. 4A, the fork 55 has a striker holding position where the engagement groove 58 intersects the insertion groove 27 as shown in FIG. 4A, and an open end of the engagement groove 58 is located on the insertion groove 27 as shown in FIG. It can rotate to the open position. Further, the fork 55 is urged clockwise by the fork spring 60 from the striker holding position toward the open position. The fork spring 60 is disposed around the first shaft hole 30 of the fence block 22.

  The claw lever 62 is pivotally supported on the lower side (the other side) of the insertion groove 27 in FIG. The claw lever 62 is provided with a fixing hole 64 that penetrates and fixes the second rotation shaft 63. The second rotating shaft 63 passes through the fence block 22 through the second shaft hole 31 formed on the open end 28 side of the insertion groove 27. The outer end of the second rotation shaft 63 is attached to the second attachment hole 48 of the cover plate 45, and the inner end of the second rotation shaft 63 is attached to the second attachment hole 52 of the set plate 50.

  The claw lever 62 includes an engagement portion 65 that can be engaged with the engagement step portion 59 of the fork 55, and holds the fork 55 in a state of being engaged with the striker 5. As shown in FIG. 4A, the claw lever 62 is engaged with the engagement portion 65 and the engagement step portion 59 as shown in FIG. 5A from the engagement position where the engagement portion 65 engages with the engagement step portion 59. It can be rotated to the disengaged position where is released. The claw lever 62 is urged counterclockwise from the non-engagement position to the engagement position by the claw spring 68 via the release lever 70. The claw spring 68 is disposed around the second shaft hole 31 on the inner surface 24 side of the fence block 22.

  Referring to FIGS. 6A and 6B together, the release lever 70 is pivotally supported by the shaft portion 32 protruding from the fence block 22. The shaft portion 32 is formed in a cylindrical shape that projects along the same axis as the axis of the second shaft hole 31. The release lever 70 is provided with a shaft hole 71 having an inner diameter larger than the outer diameter of the shaft portion 32. In addition, the release lever 70 is provided with a connection hole 72 into which the connection shaft 67 of the claw lever 62 is inserted in order to rotate integrally with the claw lever 62 about the second rotation shaft 63. The connecting hole 72 is a loose fitting hole larger than the outer shape of the connecting shaft 67. The connecting shaft 67 protrudes in the X direction from the vicinity of the engaging portion 65 that is one end side of the claw lever 62. Referring to FIG. 7, the fence block 22 is provided with an insertion hole 33 that extends in a circular arc shape with the shaft portion 32 as a center and penetrates the connecting shaft 67 from the outer surface 23 side to the inner surface 24 side. A predetermined play (space) is formed between the inner periphery of the connection hole 72 and the outer periphery of the connection shaft 67. The connecting hole 72 having play prevents any one of the claw lever 62 and the release lever 70 from inclining with respect to the rotation axis even if one of the claw lever 62 and the release lever 70 is inclined with respect to the rotation axis. The occurrence of malfunction in 70 is suppressed.

  The release lever 70 is formed with an operation receiving portion 73 that protrudes toward the link 16. The operation receiving portion 73 is located on the front side in the movement direction of the operation portion 17 of the link 16 in the unlocked state, and is not located on the front side in the movement direction of the operation portion 17 because the link 16 swings in the locked state. The release lever 70 can rotate from the non-operating position to the operating position shown in FIG. 4B. The rotation angle position of the inoperative position of the release lever 70 coincides with the rotation angle position of the engagement position of the claw lever 62. The rotation angle position of the operating position of the release lever 70 matches the rotation angle position of the disengagement position of the claw lever. Since the release lever 70 can rotate integrally with the claw lever 62, the release lever 70 is urged clockwise in FIG. 4B from the operating position to the non-operating position by the claw spring 68.

  In the door latch device 20 configured as described above, when the door 1 is closed in the open state shown in FIG. 5B, the striker 5 enters the insertion groove 27, and the striker 5 subsequently enters the engagement groove 58 of the fork 55. . Next, when the fork 55 rotates counterclockwise by the pressing force of the striker 5, the claw lever 62 is rotated in the direction of the non-engagement position. When the engagement step portion 59 exceeds the engagement portion 65, the claw lever 62 rotates to the engagement position by the urging force of the claw spring 68, and the engagement state shown in FIG. 4A is achieved.

  When the open lever 15 is opened in the unlocked state shown in FIG. 2A, the link 16 moves straight upward, so that the operation portion 17 comes into contact with the operation receiving portion 73 of the release lever 70. Next, the release lever 70 is rotated counterclockwise from the inoperative position shown in FIG. 4B by the pressing force of the link 16. Then, the claw lever 62 rotates from the engagement position shown in FIG. 4A to the non-engagement position shown in FIG. 5A. As a result, the engagement between the claw lever 62 and the fork 55 is released, and the fork 55 rotates to the open position by the urging force of the fork spring 60. When the opening operation of the open lever 15 is stopped, due to the urging force of the claw spring 68, the claw lever 62 rotates to the engagement position, and the release lever 70 rotates to the non-operation position. When the open lever 15 is opened in the locked state shown in FIG. 2B, the link 16 moves obliquely upward and the operation portion 17 does not contact the operation receiving portion 73, so the release lever 70 does not rotate. Therefore, the engagement between the claw lever 62 and the fork 55 cannot be released.

(Vibration control structure of door latch device)
As shown in FIGS. 5A, 5B, and 7, the door latch device 20 includes an elastic member for suppressing vibration of the striker 5, the claw lever 62, and the opening lever 70 when the opened door 1 is closed. Stoppers 80, 83, and 87 having the above are disposed. Specifically, a first stopper 80 that receives the striker 5, a second stopper 83 that receives the claw lever 62, and a third stopper 87 that receives the release lever 70 are provided, and the third stopper 87 is integrally formed with the first stopper 80. ing.

  Referring also to FIG. 8A, when the striker 5 that has entered the insertion groove 27 comes into contact with the first stopper 80, the impact due to the contact is absorbed, and the door 1 slightly moves in the Z direction by the vibration of the vehicle. Interference (occurrence of abnormal noise) between the striker 5 and the closed end 29 is suppressed. The first stopper 80 has a quadrangular prism shape and is disposed from the outer surface 23 side of the fence block 22 on the closed end 29 side of the insertion groove 27 which is a striker holding position. The first stopper 80 is provided with a substantially trapezoidal first attachment portion 81 that is widened toward the outside of the vehicle in the Z direction. Referring to FIG. 8B, the closed end 29 of the insertion groove 27 is provided with a dovetail-shaped first attachment groove 34 for attaching the first attachment portion 81.

  Referring also to FIG. 9, the second stopper 83 suppresses vibration of the claw lever 62 when the claw lever 62 rotated from the non-engagement position to the engagement position abuts. The claw lever 62 is provided with an abutting portion 66 that abuts on the second stopper 83 so as to protrude to the opposite side of the engaging portion 65 across the second rotating shaft 63. The second stopper 83 has a block shape, and has a second attachment portion 84 that protrudes in a substantially L shape on the side portion. The fence block 22 is provided with a second attachment groove 36 for attaching the second attachment portion 84 to the side of the fixing portion 35 for fixing the cover plate 45. By disposing the second mounting portion 84 in the second mounting groove 36 from the outer surface 23 side of the fence block 22, the second stopper 83 is disposed in contact with the outer peripheral portion of the fixed portion 35.

  Referring to FIGS. 4B and 8A together, the third stopper 87 suppresses the vibration of the release lever 70 by the contact of the release lever 70 rotated from the operating position to the non-operating position via the claw lever 62. The third stopper 87 has a flat plate shape with a thin thickness in the Y direction, which is the height dimension of the fence block 22. Further, the third stopper 87 is continuous with the first stopper 80 via the continuous portion 88. The continuous portion 88 protrudes from the lower surface in the Y direction of the first stopper 80 on the release lever 70 side. Specifically, the continuous portion 88 includes a protruding portion 89 that protrudes downward in the Y direction from the first stopper 80, an extending portion 90 that protrudes inward in the Z direction toward the release lever 70 from the end portion of the protruding portion 89, and A bent portion 91 that protrudes downward from the end of the extending portion 90 to the third stopper 87 is provided. The extending portion 90 is provided with a pressure contact portion 92 that bulges upward in the Y direction.

  Referring to FIGS. 8B and 10A together, the fence block 22 is provided with a third attachment groove 37 for attaching the third stopper 87 between the insertion groove 27 and the shaft portion 32. The interval (groove width) in the Y direction of the third mounting groove 37 is formed substantially the same as the dimension (thickness) in the Y direction of the third stopper 87. A through hole 38 is provided in the third mounting groove 37 so as to be positioned above a flat contact portion 74 formed in the release lever 70. The through hole 38 opens toward the lower side (opening lever 70 side) on the inner surface 24 side of the fence block 22. The third stopper 87 is disposed in the third mounting groove 37 from the outer surface 23 side of the fence block 22 so as to protrude from the outer surface 23 side to the inner surface 24 side through the through hole 38 as shown in FIG. 10B. ing. Further, the third stopper 87 is disposed so as to be exposed from the lower opening of the through hole 38 and to be in contact with the contact portion 74 of the release lever 70. The upper side of the third stopper 87 is supported by the wall of the third mounting groove 37, and the third stopper 87 is supported by the entire wall of the third mounting groove 37 when the release lever 70 collides with the third stopper 87. can do. Thereby, it can prevent that an excessive load concentrates on the predetermined location of the 3rd stopper 87, and can damage the 3rd stopper 87.

  In addition, the fence block 22 is provided with a continuous groove 39 that connects the closed end 29 side of the insertion groove 27 and the third attachment groove 37. As shown most clearly in FIG. 8B, the continuous groove 39 is a second groove whose interval is slightly narrower than the thickness of the first groove portion 40 that is wider than the thickness of the protruding portion 89 and the extension portion 90 that includes the press contact portion 92. The groove part 41 and the 3rd groove part 43 with a space | interval wider than the thickness of the bending part 91 are provided. By pressing the extending portion 90 into the second groove portion 41, the pressure contact portion 92 is pressed against the wall of the second groove portion 41. The second groove portion 41 is provided with a locking claw 42 that locks the outer end surface of the extending portion 90.

  The width (dimension) in the X direction of the third stopper 87 including the continuous portion 88 is formed to be the same as the width in the X direction of the first stopper 80. The width direction of the stoppers 80 and 87 is a thickness direction from the outer surface 23 to the inner surface 24 of the fence block 22, and is a direction in which the stoppers 80 and 87 are inserted into the mounting grooves 34 and 37. As described above, the third stopper 87 formed with the same width as the first stopper 80 improves the strength and durability in the X direction as compared with the case where the third stopper 87 protrudes from the first stopper 80 in the width direction (X direction). it can. In the present embodiment, the width of the second stopper 83 is also the same as the widths of the first stopper 80 and the third stopper 87.

  Note that the door latch device 20 that makes the stoppers 83 and 87 abut on the claw lever 62 and the release lever 70 that can rotate integrally as in the present embodiment takes into account the amount of compression of the stoppers 83 and 87. It is necessary to set the engagement position between the fork 55 and the claw lever 62. Moreover, since it is necessary to consider the assembly error of each component, it becomes difficult to design and manufacture the door latch device 20.

  Therefore, in this embodiment, as shown in FIGS. 11A and 11B, the release lever 70 contacts the third stopper 87 after the claw lever 62 contacts the second stopper 83 by the biasing force of the claw spring 68. As described above, the positions where the second stopper 83 and the third stopper 87 are disposed are set. Specifically, the second stopper 83 is formed with a compression portion 85 protruding in a tapered triangular shape toward the contact portion 66. The compression portion 85 can be elastically deformed (compressed) when the contact portion 66 contacts. The engagement position between the fork 55 and the claw lever 62 is set to a position where the compression portion 85 is compressed via the claw lever 62 by the urging force of the claw spring 68. The arrangement position of the third stopper 87 is set so that the contact portion 74 of the release lever contacts the third stopper 87 at the rotation angle position of the claw lever 62.

  According to the door latch device 20 configured as described above, when the striker 5 enters the insertion groove 27 by closing the opened door 1, the striker 5 comes into contact with the first stopper 80 after being engaged with the fork 55. The approach stops. Therefore, when the striker 5 excessively enters the insertion groove 27, it is possible to reduce the generation of noise due to the striker 5 colliding with the closed end 29. Further, the claw lever 62 that rotates from the non-engagement position to the engagement position as the fork 55 rotates contacts the second stopper 83 and stops in a state where the compression portion 85 is compressed. Therefore, it is possible to reduce the generation of noise due to the contact portion 66 of the claw lever 62 colliding with the fence block 22. When the claw lever 62 rotates to the engagement position, the release lever 70 comes into contact with the third stopper 87. Therefore, it is possible to reduce the occurrence of abnormal noise caused by the release lever 70 colliding with the fence block 22.

  In the state where the door 1 is closed, the striker 5 is held in a state of being pressed against the first stopper 80 by the fork 55 being held at the striker holding position by the claw lever 62. Further, the claw lever 62 is held in a state of being pressed against the second stopper 83 by the urging force of the claw spring 68. Further, the release lever 70 is held in a state of being pressed against the third stopper 87 by the urging force of the claw spring 68. Therefore, in order to prevent a malfunction of the claw lever 62 or the release lever 70, even if play is set in these connecting portions, vibration of the levers 62 and 70 can be suppressed. Further, it is possible to reduce abnormal noise generated from the levers 62 and 70 due to vibration.

  Further, since the claw lever 62 is set to contact the second stopper 83 before the release lever 70 contacts the third stopper 87, the engagement position of the claw lever 62 is set to the claw lever 62 and the second stopper. Only 83 can be set. Therefore, the door latch device 20 can be easily designed and manufactured. Moreover, the third stopper 87 is integrally formed with the same width as the first stopper 80 by extending the first stopper 80 in the Z direction instead of protruding from the first stopper 80 in the X direction. . Therefore, by arranging the first stopper 80 in the first attachment groove 34 of the fence block 22, the third stopper 87 can be simultaneously inserted and arranged in the third attachment groove 37 (through hole 38). As a result, workability for assembling the third stopper 87 to the fence block 22 can be improved.

  The door latch device 20 of the present invention is not limited to the configuration of the above embodiment, and various modifications can be made.

  For example, the claw lever 62 and the release lever 70 may be brought into contact with the second stopper 83 and the third stopper 87 at the same time, or after the release lever 70 is brought into contact with the third stopper 87, the claw lever 62 is moved to the second stopper 83 and the third stopper 87. 2 You may make it contact | abut to a stopper. The third stopper 87 may be formed with a width different from that of the first stopper 80 or may be formed so as to protrude from the first stopper 80 in the X direction. Even when the width of the third stopper 87 is configured to be narrower than the width of the first stopper 80, the width of the third stopper 87 is smaller than that of the first stopper 80 formed in the width direction (X direction). Direction) strength and durability. The insertion groove 27 may be a slit that penetrates from the outer surface 23 to the inner surface 24. Further, the claw lever 62 may be directly urged by the claw spring 68, and separate springs may be set for the claw lever 62 and the release lever 70, respectively.

  Further, the third stopper 87 may be formed separately from the first stopper 80 and integrally coupled to the first stopper 80. In addition, the second stopper 83 may not be provided with the compression portion 85 but may be formed on an elastomer cover having elasticity provided in the claw lever 62. In this case, the second stopper 83 may be formed of a member having no elasticity, or may be integrally formed with the fence block 22.

  Further, the configurations of the fork 55, the claw lever 62, and the release lever 70 can be changed as desired. Further, the play configuration set to suppress the occurrence of malfunctions in the claw lever 62 and the release lever 70 can be changed as desired. In the above embodiment, the door latch device 20 used in the door lock device 10 of the present invention has been described as an example. However, the present invention can also be applied to a door latch device arranged directly on a hatchback door of a vehicle.

DESCRIPTION OF SYMBOLS 1 Door 2 Inner panel 3 End surface 5 Striker 10 Door lock apparatus 11 Housing 12 1st mounting part 13 2nd mounting part 15 Open lever 16 Link 17 Operation part 18 Switching lever 20 Door latch apparatus 22 Fence block 23 Outer surface (one side)
24 Inner surface (other surface)
25 first arrangement portion 26 second arrangement portion 27 insertion groove 28 open end 29 closed end 30 first shaft hole 31 second shaft hole 32 shaft portion 33 insertion hole 34 first attachment groove 35 fixing portion 36 second attachment groove 37 second 3 Mounting groove 38 Through hole 39 Continuous groove 40 1st groove part 41 2nd groove part 42 Locking claw 43 3rd groove part 45 Cover plate 46 Insertion groove 47 1st attachment hole 48 2nd attachment hole 50 Set plate 51 1st attachment hole 52 Second mounting hole 55 Fork 56 First rotation shaft 57 Fixed hole 58 Engagement groove 59 Engagement step portion 60 Fork spring 62 Claw lever 63 Second rotation shaft 64 Fixed hole 65 Engagement portion 66 Contact portion 67 Connection shaft 68 Claw Spring 70 Release lever 71 Shaft hole 72 Connecting hole 73 Operation receiving portion 74 Abutting portion 80 First stopper 81 First mounting portion 83 Second stopper 84 Second mounting 85 compression unit 87 third stopper 88 consecutive portion 89 protruding portion 90 extending portion 91 bent portion 92 contact portion

Claims (3)

A fence block in which an insertion groove into which a striker can be inserted is formed;
A first stopper which is disposed at a striker holding position of the insertion groove and has elasticity to receive the striker;
A fork that is rotatably arranged on one side of the insertion groove on one surface of the fence block, and that can engage the striker;
A claw lever that is rotatably arranged on the other side of the insertion groove on the one surface side of the fence block and that can be engaged with and disengaged from the fork to hold the fork in a state of being engaged with the striker. When,
A claw spring that urges the claw lever toward an engagement position engageable with the fork;
A second stopper for receiving the claw lever biased to the engagement position;
An opening lever disposed on the other surface of the fence block so as to rotate integrally with the claw lever;
The release lever, which is formed on the first stopper, is disposed from the one surface side of the fence block to the other surface side through a through hole formed in the fence block, and is biased by the claw spring. A door latch device comprising: a third stopper to be received.   When the claw lever rotates to the engagement position by the urging force of the claw spring, the claw lever contacts the second stopper before the release lever contacts the third stopper. 2. The door latch device according to claim 1, wherein positions for disposing the second stopper and the third stopper are set.   The width of the third stopper which is a direction from the one surface of the fence block to the other surface is the same as the width of the first stopper which is a direction from the one surface of the fence block to the other surface. The door latch device according to claim 1 or 2.

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