Manual unlocking device

Abstract

A manual unlocking device according to one embodiment of the present invention is used for manually unlocking a locking device for locking a door device for opening and closing an entrance of a vehicle, and is provided with: an operation member capable of rotating between a locking position and an unlocking position by a manual operation; a conversion mechanism that converts a rotational motion of the operation member into a linear motion; and a traction member, one end of which is connected to the conversion mechanism, the other end of which is connected to the locking device, and which transmits the linear motion transmitted from the conversion mechanism to the locking device to unlock the door device. The switching mechanism has a plurality of links located at a dead center position when the operating member is rotationally moved from the locked position to the unlocked position.

Description

Technical Field

[0001] The invention relates to a manual unlocking device. Background Art

[0002] Patent Document 1 discloses a technology in which a latch that locks a door can be manually unlocked by operating a handle device to which a cable is connected.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2010-174435 Summary of the invention

[0006] Problem that the invention aims to solve

[0007] Generally speaking, the operating part of the handle device is directly connected to the internal cable. Therefore, if an external force is applied to the cable from the latch in the locking direction in the unlocked state, the operating part is directly pulled by the external force. Therefore, the operating part is positioned by a ball plunger or the like to keep the operating part in the unlocked position to prevent the operating part from returning to the locked position at will due to such external force. If the holding force of the ball plunger is strong, it is possible to prevent the operating part from returning to the locked position under the influence of the external force. On the other hand, the operating burden of the operating part also increases.

[0008] The present invention is made to solve the above-mentioned problems, and an object of the present invention is to provide a manual unlocking device that can hold an operating member in an unlocked position without requiring electric power even when an external force acts on the pulling member from a locking device in the unlocked state.

[0009] Solutions for solving problems

[0010] As a solution to the above-mentioned problem, the technical solution of the present invention has the following structure.

[0011] (1) The manual unlocking device of the technical solution of the present invention is used to manually unlock a locking device that locks a door device that opens and closes a vehicle's boarding and alighting entrance, wherein the manual unlocking device comprises: an operating member that can rotate between a locked position and an unlocked position by manual operation; a conversion mechanism that converts the rotational movement of the operating member into a linear motion; and a traction member, one end of which is connected to the conversion mechanism and the other end of which is connected to the locking device, for transmitting the linear motion transmitted from the conversion mechanism to the locking device to unlock the door device, wherein the conversion mechanism has a plurality of connecting rods that are located at a dead point position when the operating member rotates from the locked position to the unlocked position.

[0012] According to this structure, when the operating member is operated to rotate to the unlocking position and the door device is unlocked, the plurality of links are located at the dead point position. Therefore, even if an external force acts on the pulling member from the locking device in the unlocked state, the operating member can be kept in the unlocking position without power.

[0013] (2) According to the manual unlocking device described in (1) above, the traction member may be a cable, and the manual unlocking device also has a slider mechanism, which fixes the cable and supports the cable to be movable in the direction along the linear motion, and one end of the multiple connecting rods is connected to the operating member, and the other end is connected to the slider mechanism.

[0014] (3) A manual unlocking device according to the above (2), wherein the multiple connecting rods may also include: a first connecting rod, one end of which is connected in a manner that can rotate around a connecting portion connected to the operating member; and a second connecting rod, one end of which is connected in a manner that can rotate around a connecting portion connected to the other end of the first connecting rod, and the other end of which is connected in a manner that can rotate around a connecting portion connected to the slider mechanism, when the operating member rotates from the locked position to the unlocked position, the first connecting rod from one end to the other end and the second connecting rod from one end to the other end are at dead point positions on a straight line.

[0015] (4) According to the manual unlocking device described in (3) above, the operating member can also be rotated 90 degrees between the locked position and the unlocked position with the support shaft as the center, and the manual unlocking device also has a gear mechanism that reduces the rotation of the support shaft at a predetermined reduction ratio and transmits it to one end of the first connecting rod.

[0016] (5) According to the manual unlocking device described in (4) above, it can also be that the gear mechanism includes: a driving gear whose rotation center is connected to the supporting shaft in a rotatable manner; and a driven gear whose rotation center is connected to one end of the first connecting rod, the driven gear meshes with the driving gear to transmit the rotational movement of the operating member to the first connecting rod, and the driving gear has: a gear portion, which meshes with the driven gear; and a positioning portion, which positions the position of the driving gear when the operating member is in the locked position and the unlocked position, and the gear portion and the positioning portion are arranged at different positions on the circumference of an imaginary circle centered on the supporting shaft as the rotation center of the driving gear.

[0017] (6) According to the manual unlocking device described in (5) above, the cable serving as the traction member may be constructed in a manner capable of moving between a starting end and a terminal end in the direction of the linear motion, and the manual unlocking device may also include a limiting wall, which contacts the drive gear before the cable is located at the starting end or the terminal end when the cable moves in the direction of the linear motion, thereby limiting the rotational movement of the drive gear.

[0018] (7) A manual unlocking device according to any one of (4) to (6) above, wherein the first connecting rod may be configured to be rotatable around a first axis parallel to the supporting axis at a connection portion where one end of the first connecting rod is connected to the operating member, and the first axis is configured to be located at a position that does not overlap with a rotation trajectory of the second connecting rod when viewed from a direction along the first axis.

[0019] (8) According to the manual unlocking device described in (2) above, it can also be that the multiple connecting rods include: a first connecting rod, one end of which is connected in a manner that can rotate around a connecting portion connected to the operating member; a second connecting rod, one end of which is connected in a manner that can rotate around a connecting portion connected to the other end of the first connecting rod, and the other end is connected in a manner that can rotate around a connecting portion connected to a fixed portion; and a third connecting rod, one end of which is connected in a manner that can rotate around a connecting portion connected to one end of the second connecting rod, and the other end is connected in a manner that can rotate around a connecting portion connected to the slider mechanism, when the operating member rotates from the locked position to the unlocked position, the second connecting rod from one end to the other end and the third connecting rod from one end to the other end are at dead point positions on a straight line.

[0020] (9) According to the manual unlocking device described in (8) above, the operating member can also be able to rotate between the locked position and the unlocked position around the support shaft, and the manual unlocking device also has a transmission member that transmits the rotation of the support shaft to one end of the first link.

[0021] (10) According to the manual unlocking device described in (8) or (9) above, the length from one end to the other end of the third link may be shorter than the length from one end to the other end of the second link.

[0022] Effects of the Invention

[0023] According to the present invention, even when an external force acts on the pulling member from the locking device in the unlocked state, the operating member can be held in the unlocked position without requiring electric power. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a diagram of the vehicle door according to the first embodiment as viewed from the outside in the width direction.

[0025] Figure 2 It is a perspective view of the manual unlocking device according to the first embodiment in a locked state.

[0026] Figure 3 This is a front view of the manual unlocking device according to the first embodiment in a locked state.

[0027] Figure 4 This is a front view of the manual unlocking device according to the first embodiment during operation.

[0028] Figure 5 This is a front view of the manual unlocking device according to the first embodiment in the unlocked state.

[0029] Figure 6 It is a perspective view of the manual unlocking device according to the second embodiment in the locked state.

[0030] Figure 7 It is a front view of the manual unlocking device according to the second embodiment in the locked state.

[0031] Figure 8 This is a front view of the manual unlocking device according to the second embodiment during operation.

[0032] Fig. 9 It is a front view of the manual unlocking device according to the second embodiment in the unlocked state.

[0033] Fig.10 It is an explanatory diagram of a toggle mechanism of a manual unlocking device according to a second embodiment.

[0034] Description of Reference Numerals

[0035] 1. 201, manual unlocking device; 2. operating member; 3. 203, conversion mechanism; 4. traction member; 5. slider mechanism; 6. gear mechanism; 7. limiting wall; 10. boarding and alighting port; 15. door device; 16. locking device; 20. supporting shaft; 21. 221, first connecting rod; 22. 222, second connecting rod; 25, first shaft; 40, driving gear; 41. gear part; 42. positioning part; 50, driven gear; 209, transmission member; 223, third connecting rod; P1, starting end; P2, end point. DETAILED DESCRIPTION

[0036] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, an example of a manual unlocking device for manually unlocking a locking device that locks a door device that opens and closes a boarding and alighting entrance of a railway vehicle (vehicle) is given for description. In the following description, expressions such as "parallel", "orthogonal", "center", "coaxial", etc. that indicate relative or absolute configurations do not strictly mean such configurations, but also include states of angles and distances that are relatively displaced by tolerances or degrees to obtain the same functions. In the drawings used in the following description, the scale of each component is appropriately changed in order to set each component to a recognizable size.

[0037] <Vehicle doors>

[0038] Figure 1 This is a diagram of the vehicle door according to the first embodiment as viewed from the outside in the width direction.

[0039] like Figure 1 As shown in FIG. 1 , the vehicle door is configured to include a pair of double-leaf sliding doors 11 for opening and closing a vehicle entrance 10. Figure 1 The state where the door 11 is in the fully closed position is shown in FIG.

[0040] In the following description, the orthogonal coordinate system of X, Y, and Z is used as needed. The X direction corresponds to the front-rear direction of the vehicle. The Y direction corresponds to the width direction of the vehicle. The Z direction corresponds to the height direction (gravity direction) of the vehicle that is orthogonal to the X direction and the Y direction. In the following description, the arrow side in the figure among the X direction, the Y direction, and the Z direction is set as the positive (+) side, and the side opposite to the arrow is set as the negative (-) side for description. The +Y side corresponds to the outer side in the width direction, and the -Y side corresponds to the inner side in the width direction. The +Z side corresponds to the upper side in the gravity direction, and the -Z side corresponds to the lower side in the gravity direction.

[0041] The door 11 moves in the X direction by a driving force from a driving source (eg, a motor) not shown to open and close the entrance 10. A door device 15 for opening and closing the entrance 10 and a locking device 16 for locking the door device 15 are provided above the entrance 10.

[0042] <Manual release device>

[0043] The manual unlocking device 1 is a device for manually unlocking a locking device 16 that locks a door device 15 that opens and closes a vehicle's boarding and alighting entrance 10. The manual unlocking device 1 is connected to the locking device 16 by means of a traction member 4. For example, the manual unlocking device 1 can be configured to be operable from inside the vehicle or from outside the vehicle. For example, the manual unlocking device 1 is preferably configured at a position where it can be operated by passengers, crew members, station attendants, etc. in an emergency. For example, the configuration of the manual unlocking device 1 can be changed according to design specifications.

[0044] Figure 2 It is a perspective view of the manual unlocking device 1 according to the first embodiment in a locked state. Figure 3 It is a front view of the manual unlocking device 1 according to the first embodiment in the locked state. Figure 4 It is a front view of the manual unlocking device 1 of the first embodiment during operation. Figure 5 It is a front view of the manual unlocking device 1 according to the first embodiment in the unlocked state.

[0045] Refer to Figure 2 to Figure 5 The manual unlocking device 1 includes an operating member 2, a conversion mechanism 3, a pulling member 4, a slider mechanism 5, a gear mechanism 6, and a limiting wall 7. The manual unlocking device 1 also includes a housing 8 that houses the conversion mechanism 3, the pulling member 4, the slider mechanism 5, the gear mechanism 6, and a portion of the limiting wall 7. In each figure, a portion of the housing 8 (for example, a cover) is omitted.

[0046] <Operation components>

[0047] The operating member 2 can be manually operated in the locked position ( Figure 3 shown in the unlocked position ( Figure 5 The operating member 2 is configured to rotate between the locked position and the unlocked position (shown in the figure). The operating member 2 can rotate 90 degrees between the locked position and the unlocked position with the support shaft 20 as the center. The operating member 2 extends in a vertical direction at the locked position. The operating member 2 extends in a horizontal direction at the unlocked position. The portion of the operating member 2 on the side opposite to the connection portion connected to the support shaft 20 is exposed outside the housing 8 between the locked position and the unlocked position.

[0048] <Conversion mechanism>

[0049] The conversion mechanism 3 converts the rotational motion of the operating member 2 into a linear motion. The conversion mechanism 3 has a plurality of connecting rods 21, 22 that are located at a dead point position when the operating member 2 rotates from a locked position to an unlocked position. One end of the plurality of connecting rods 21, 22 is connected to the operating member 2, and the other end is connected to the slider mechanism 5. The slider mechanism 5 and the conversion mechanism 3 constitute a so-called slider crank mechanism. The plurality of connecting rods 21, 22 include: a first connecting rod 21, one end of which is connected in a manner that allows rotation around a connection portion connected to the operating member 2; and a second connecting rod 22, one end of which is connected in a manner that allows rotation around a connection portion connected to the other end of the first connecting rod 21, and the other end of which is connected in a manner that allows rotation around a connection portion connected to the slider mechanism 5.

[0050] The first link 21 is configured to be rotatable around a first axis 25 parallel to the support shaft 20 at a connection portion where one end of the first link 21 is connected to the operating member 2. The first link 21 extends vertically upward from one end to the other end of the first link 21 at the locked position. The first link 21 extends vertically downward from one end to the other end of the first link 21 at the unlocked position.

[0051] The second connecting rod 22 is configured to be rotatable around the second axis 26 parallel to the first axis 25 at the connection portion where one end of the second connecting rod 22 is connected to the other end of the first connecting rod 21. The second connecting rod 22 extends vertically upward from one end to the other end of the second connecting rod 22 at each position of the locked position and the unlocked position. Specifically, the second connecting rod 22 extends from one end of the second connecting rod 22 toward the upper right of the figure at each position of the locked position and the unlocked position, and then extends to the other end of the second connecting rod 22 toward the upper left of the figure. The second connecting rod 22 is formed into a V-shape (specifically, a shape in which the minimum angle formed by the V-shape is an obtuse angle) when viewed from the direction along the second axis 26.

[0052] <Traction components>

[0053] For example, the pulling member 4 is a cable. One end of the pulling member 4 is connected to the conversion mechanism 3. The other end of the pulling member 4 is connected to the locking device 16. The pulling member 4 transmits the linear motion transmitted from the conversion mechanism 3 to the locking device 16 to unlock the door device 15. The pulling member 4 is configured to be movable between the starting end P1 and the terminal end P2 in synchronization with the slider 31 in the direction of the linear motion.

[0054] Although not shown, a pressing force (elastic force) generated by an elastic portion such as a spring constituting the locking device 16 acts on the pulling member 4. Thus, a force that pulls the pulling member 4 vertically upward acts on the pulling member 4.

[0055] <Slider Mechanism>

[0056] The slider mechanism 5 supports the traction member 4 (for example, the inner cable) so as to be movable in the direction along the linear motion. The other end of the traction member 4 is fixed to the slider mechanism 5. The other end of the second link 22 is connected to the slider mechanism 5.

[0057] In the example of the figure, the slider mechanism 5 includes: a slider 31 having a protrusion 30 protruding toward the upper right of the figure; and a guide rail 32 extending in the vertical direction. The slider 31 is supported by the guide rail 32 in a manner that allows movement along the guide rail 32. The configuration of the slider mechanism 5 is not limited to the above configuration and can be changed according to design specifications.

[0058] The pressing force (elastic force) generated by the elastic part such as a spring acts on the slider 31 through the traction member 4. Therefore, a force that pulls the slider 31 vertically upward acts together with the traction member 4.

[0059] The other end of the second link 22 is connected to the top of the protrusion 30 of the slider 31 so as to be rotatable around the connection portion. The second link 22 is configured to be rotatable around the third axis 27 parallel to the second axis 26 at the connection portion where the other end of the second link 22 is connected to the top of the protrusion 30 of the slider 31.

[0060] <Gear mechanism>

[0061] The gear mechanism 6 reduces the speed of rotation of the support shaft 20 at a predetermined reduction ratio and transmits the reduced speed to one end of the first link 21. The gear mechanism 6 includes a drive gear 40 and a driven gear 50 that meshes with the drive gear 40 and rotates drivenly.

[0062] The rotation center of the driving gear 40 is rotatably connected to the support shaft 20. The rotation center of the driven gear 50 is connected to one end of the first link 21. The driven gear 50 meshes with the driving gear 40 and transmits the rotational motion of the operation member 2 to the first link 21.

[0063] For example, the gear ratio B / A of the number of teeth A of the driving gear 40 and the number of teeth B of the driven gear 50 is 1 / 2. The gear ratio B / A is not limited to the above 1 / 2, and may be less than 1 / 2 or more than 1 / 2. For example, the gear ratio B / A may be changed according to the design specifications.

[0064] The driving gear 40 includes a gear portion 41 that meshes with the driven gear 50 and a positioning portion 42 that positions the driving gear 40 when the operating member 2 is located at the locked position and the unlocked position. The gear portion 41 and the positioning portion 42 are arranged at different positions on the circumference of an imaginary circle centered on the support shaft 20 as the rotation center of the driving gear 40.

[0065] In the example of the figure, the gear portion 41 is arranged within a range of a central angle of about 90 degrees with the support shaft 20 as the rotation center of the drive gear 40 as the center. The arrangement form of the gear portion 41 is not limited to the above-mentioned form, and may also be arranged within a range of a central angle of less than 90 degrees or more than 90 degrees with the support shaft 20 as the rotation center of the drive gear 40 as the center. For example, the arrangement form of the gear portion 41 can be changed according to the design specifications.

[0066] In the example of the figure, the positioning portion 42 is arranged on the opposite side of the gear portion 41 in the radial direction centered on the support shaft 20 as the rotation center of the drive gear 40. The drive gear 40 is formed with: a first recess 43 for positioning the position of the drive gear 40 when the operating member 2 is in the locked position; and a second recess 44 for positioning the position of the drive gear 40 when the operating member 2 is in the unlocked position. The positioning portion 42 is configured to include a wall portion forming the first recess 43 and the second recess 44 in the drive gear 40.

[0067] In the example of the figure, a plunger 61 is mounted on the inclined wall 60 of the housing 8. For example, the plunger 61 is a ball plunger. The plunger 61 has a convex portion 62 (for example, a part of a ball head) protruding toward the support shaft 20, which is the rotation center of the drive gear 40. In the example of the figure, the convex portion 62 of the plunger 61 protrudes from the inclined wall 60 of the housing 8 toward the lower left of the figure. The protruding form of the convex portion 62 of the plunger 61 is not limited to the above form, and can be changed according to the design specifications.

[0068] For example, when the operation member 2 is located at the locking position, the convex portion 62 of the plunger 61 fits into the first concave portion 43 of the drive gear 40. Thus, the position of the drive gear 40 can be positioned when the operation member 2 is located at the locking position.

[0069] On the other hand, when the operation member 2 is located at the unlock position, the convex portion 62 of the plunger 61 fits into the second concave portion 44 of the drive gear 40. Thus, the position of the drive gear 40 can be positioned when the operation member 2 is located at the unlock position.

[0070] <Restriction wall>

[0071] When the traction member 4 moves in the direction of the linear motion, the limiting wall 7 contacts the drive gear 40 before the traction member 4 is located at the starting end P1 or the terminal end P2, thereby limiting the rotational motion of the drive gear 40. In the example of the figure, the limiting wall 7 is provided on a surface facing the drive gear 40 in the housing 8. The limiting wall 7 is configured to include: a first wall portion 71, which contacts the drive gear 40 before the traction member 4 is located at the terminal end P2 when the traction member 4 moves in the direction of the linear motion from the starting end P1 side to the terminal end P2 side, thereby limiting the rotational motion of the drive gear 40; and a second wall portion 72, which contacts the drive gear 40 before the traction member 4 is located at the starting end P1 when the traction member 4 moves in the direction of the linear motion from the terminal end P2 side to the starting end P1 side, thereby limiting the rotational motion of the drive gear 40.

[0072] For example, when the operating member 2 is in the locked position, a portion of the drive gear 40 contacts the second wall portion 72. The portion of the drive gear 40 corresponds to a portion on one side of the root of the gear portion 41 in the rotational movement direction of the drive gear 40. Thus, even when the operating member 2 rotates beyond the locked position, it is possible to protect the gear portion 41 of the drive gear 40 from being applied with a load.

[0073] On the other hand, when the operating member 2 is located at the unlocked position, another part of the drive gear 40 contacts the first wall portion 71. The other part of the drive gear 40 corresponds to the part on the other side of the root of the gear portion 41 in the rotational movement direction of the drive gear 40. Thus, even when the operating member 2 rotates beyond the unlocked position, it is possible to protect the gear portion 41 of the drive gear 40 from being applied with a load.

[0074] <1st axis configuration>

[0075] The first shaft 25 is arranged at a position that does not overlap with the rotation trajectory of the second link 22 when viewed from the direction along the first shaft 25. The first shaft 25 is arranged at a position vertically below one end of the second link 22 at the locked position. The first shaft 25 is arranged at a position vertically above one end of the second link 22 at the unlocked position. The first shaft 25 is arranged in a space between one end and the other end of the second link 22 at the unlocked position.

[0076] <Locked state and unlocked operation>

[0077] Figure 3 It is a front view of the manual unlocking device 1 according to the embodiment in the locked state. Figure 4 It is a front view of the manual unlocking device 1 according to the embodiment during operation. Figure 5 It is a front view of the manual unlocking device 1 according to the embodiment in the unlocked state.

[0078] Please refer to the following Figure 3 to Figure 5 , an example of the locked state of a door and the manual unlocking action is explained.

[0079] <An example of a locked state>

[0080] Refer to Figure 1 and Figure 3 For example, in a normal state such as when the vehicle is running, the door 11 is in a fully closed position and is locked by the locking device 16. For example, when the vehicle is running or when it is impossible to get on or off the vehicle through the door on the side opposite to the platform, the door is set to a locked state.

[0081] exist Figure 3In the embodiment, the cable (pulling member 4) is pulled vertically upward due to the pressing force (elastic force) generated by the elastic part such as the spring not shown. At this time, the slider 31 is pulled vertically upward together with the cable. The slider 31 is arranged at a position on the starting end P1 side along the direction of the cable linear motion.

[0082] <An example of unlocking action>

[0083] Refer to Figure 3 to Figure 5 For example, in an emergency or during maintenance, the operating member 2 is rotated in the direction of arrow R. For example, the operating member 2 is rotated 90 degrees between the locked position and the unlocked position around the support shaft 20. In this case, the driving gear 40 rotatably connected to the support shaft 20 at the center of rotation rotates in the direction of arrow R1.

[0084] At this time, the driven gear 50 meshing with the driving gear 40 rotates in the direction of arrow R2 about the first shaft 25. For example, when the gear ratio B / A is 1 / 2, if the operating member 2 is rotated 90 degrees about the support shaft 20, the driven gear 50 rotates 180 degrees about the first shaft 25.

[0085] The rotation of the driven gear 50 transmits the rotational motion of the operation member 2 to the first link 21. Figure 3 As Figure 4 , Figure 5 The rotation movement is shown in this way. Figure 5 In the position shown, one end of the second link 22 is arranged vertically below the first shaft 25 .

[0086] The rotational movement of the operating member 2 is converted into a linear motion toward the vertical downward direction by the rotational movement of the second connecting rod 22. Then, the slider 31 moves toward the vertical downward direction along the guide rail 32. At this time, the cable overcomes the pressing force generated by the elastic part such as the spring by the slider 31 and is pulled toward the vertical downward direction. Thus, the linear motion transmitted from the conversion mechanism 3 is transmitted to the locking device 16, so that the door device 15 is unlocked.

[0087] When the operating member 2 rotates from the locked position to the unlocked position, the first link 21 and the second link 22 are at dead point positions on a straight line from one end to the other end. Figure 5 In the unlocked position shown, the first link 21 from one end to the other end and the second link 22 from one end to the other end are arranged on the same vertical line.

[0088] exist Figure 5In the unlocked position shown, the driving gear 40 is positioned by engaging the convex portion 62 of the plunger 61 with the second concave portion 44 of the driving gear 40. For example, the plunger 61 prevents the operating member 2 from returning to its original position (locked position) due to its own weight in the unlocked position.

[0089] <Effects>

[0090] As described above, the manual unlocking device 1 of the present embodiment is a manual unlocking device 1 for manually unlocking the locking device 16 that locks the door device 15 that opens and closes the vehicle's boarding and alighting entrance 10. The manual unlocking device 1 includes: an operating member 2 that can rotate between a locked position and an unlocked position by manual operation; a conversion mechanism 3 that converts the rotational movement of the operating member 2 into a linear motion; and a pulling member 4, one end of which is connected to the conversion mechanism 3 and the other end is connected to the locking device 16, and transmits the linear motion transmitted from the conversion mechanism 3 to the locking device 16 to unlock the door device 15. The conversion mechanism 3 has a plurality of connecting rods 21 and 22 that are located at the dead center position when the operating member 2 rotates from the locked position to the unlocked position.

[0091] According to this structure, when the operating member 2 is operated to rotate to the unlocked position, thereby unlocking the door device 15, the plurality of links 21 and 22 are located at the dead point position. Therefore, even if an external force is applied to the pulling member 4 from the locking device 16 in the unlocked state, the operating member 2 can be maintained in the unlocked position without the need for power.

[0092] In the manual unlocking device 1 of the present embodiment, the pulling member 4 is a cable. The manual unlocking device 1 further includes a slider mechanism 5 to which the cable is fixed and which supports the cable so as to be movable in a direction along a linear motion. One end of a plurality of connecting rods 21 and 22 is connected to the operating member 2, and the other end is connected to the slider mechanism 5.

[0093] According to this configuration, the cable can be pulled via the slider mechanism 5 , so that unlocking can be performed stably.

[0094] In the manual unlocking device 1 of the present embodiment, the plurality of links 21 and 22 include: a first link 21, one end of which is connected in a manner rotatable around a connection portion connected to the operating member 2; and a second link 22, one end of which is connected in a manner rotatable around a connection portion connected to the other end of the first link 21, and the other end of which is connected in a manner rotatable around a connection portion connected to the slider mechanism 5. When the operating member 2 rotates from the locked position to the unlocked position, the first link 21 from one end to the other end and the second link 22 from one end to the other end are at dead point positions located on a straight line.

[0095] According to this structure, when the operating member 2 is operated to rotate to the unlocked position, thereby unlocking the door device 15, the first link 21 from one end to the other end and the second link 22 from one end to the other end are at the dead point position located on a straight line. Therefore, even if an external force is applied to the traction member 4 from the locking device 16 in the unlocked state, the operating member 2 can be kept in the unlocked position without the need for power.

[0096] In the manual unlocking device 1 of this embodiment, the operating member 2 can rotate 90 degrees between the locked position and the unlocked position around the support shaft 20. The manual unlocking device 1 further includes a gear mechanism 6 that reduces the rotation of the support shaft 20 at a predetermined reduction ratio and transmits the rotation to one end of the first link 21.

[0097] According to this configuration, the amount of rotational movement of the operation member 2 can be increased, and therefore the length of the first link 21 required to pull the cable by the same amount can be shortened.

[0098] In the manual unlocking device 1 of the present embodiment, the gear mechanism 6 includes: a driving gear 40, whose rotation center is rotatably connected to the support shaft 20; and a driven gear 50, whose rotation center is connected to one end of the first connecting rod 21, and the driven gear 50 is meshed with the driving gear 40 to transmit the rotational motion of the operating member 2 to the first connecting rod 21. The driving gear 40 has: a gear portion 41, which is meshed with the driven gear 50; and a positioning portion 42, which positions the position of the driving gear 40 when the operating member 2 is located at the locked position and the unlocked position. The gear portion 41 and the positioning portion 42 are arranged at different positions on the circumference of an imaginary circle centered on the support shaft 20 as the rotation center of the driving gear 40.

[0099] According to this configuration, the gear portion 41 and the positioning portion 42 are disposed on the same virtual circumference. Therefore, the positioning portion 42 can stabilize the operation of the operation member 2 and prevent the drive gear 40 from being enlarged.

[0100] In the manual unlocking device 1 of the present embodiment, the cable as the pulling member 4 is configured to be movable between the starting end P1 and the terminal end P2 in the direction of linear motion. The manual unlocking device 1 further includes a limiting wall 7 that contacts the drive gear 40 before the cable is located at the starting end P1 or the terminal end P2 when the cable moves in the direction of linear motion to limit the rotational motion of the drive gear 40.

[0101] According to this configuration, even when the operation member 2 is forcibly rotated beyond the locking position or the unlocking position, it is possible to protect the gear portion 41 of the drive gear 40 from being applied with a load.

[0102] In the manual unlocking device 1 of the present embodiment, the first link 21 is configured to be rotatable around a first shaft 25 parallel to the support shaft 20 at a connection portion where one end of the first link 21 is connected to the operating member 2. The first shaft 25 is arranged at a position that does not overlap with the rotation trajectory of the second link 22 when viewed from the direction along the first shaft 25.

[0103] According to this configuration, compared with a case where the first shaft 25 is arranged at a position overlapping with the rotation trajectory of the second link 22 as viewed from the direction along the first shaft 25 , it is possible to avoid an increase in size of the manual unlocking device 1 in the direction along the first shaft 25 .

[0104] <Modification>

[0105] In the above-mentioned embodiment, the traction member is described as an example of a cable, but the present invention is not limited thereto. For example, the traction member may be composed of a member other than a cable. For example, the traction member may be composed of a chain, a rod, a hook, etc. For example, the configuration of the traction member may be changed according to the design specifications.

[0106] In the above-mentioned embodiment, the manual unlocking device is described by citing the following example, and further includes a slider mechanism, to which a cable is fixed, and the cable is supported so as to be movable in a direction along a linear motion, but the present invention is not limited thereto. The manual unlocking device may also not include a slider mechanism. For example, the manual unlocking device may also be configured to pull the cable without the aid of a slider mechanism. For example, the arrangement form of the slider mechanism may be changed according to the design specifications.

[0107] In the above-mentioned embodiment, the example in which the other end of the second connecting rod is connected to the slider mechanism is cited for explanation, but it is not limited to this. For example, the other end of the second connecting rod may not be connected to the slider mechanism. For example, the other end of the second connecting rod may also be connected to the cable without the aid of the slider mechanism. For example, the connection form of the other end of the second connecting rod can be changed according to the design specifications.

[0108] In the above-mentioned embodiment, the example that the operating member can rotate 90 degrees between the locked position and the unlocked position with the support shaft as the center is cited for explanation, but the invention is not limited thereto. For example, the operating member can rotate less than 90 degrees or more than 90 degrees between the locked position and the unlocked position with the support shaft as the center. For example, the rotation angle of the operating member rotating between the locked position and the unlocked position with the support shaft as the center can be changed according to the design specifications.

[0109] In the above-mentioned embodiment, the manual unlocking device is described by citing an example in which the manual unlocking device is also provided with a gear mechanism that reduces the rotation of the support shaft at a predetermined reduction ratio and transmits it to one end of the first connecting rod, but it is not limited to this. For example, the manual unlocking device may not have a gear mechanism. For example, the manual unlocking device may also have a pulley mechanism, a mechanism including a chain, etc. to replace the gear mechanism. For example, it may also be that one end of the first connecting rod is connected to the operating member in a manner that can rotate around the connecting portion connected to the operating member. For example, the setting form of the gear mechanism can be changed according to the design specifications.

[0110] In the above-mentioned embodiment, the following example is cited for explanation, the gear mechanism includes: a driving gear, whose rotation center is rotatably connected to the support shaft; and a driven gear, whose rotation center is connected to one end of the first connecting rod, the driven gear meshes with the driving gear and transmits the rotational movement of the operating member to the first connecting rod, and the driving gear has: a gear portion, which meshes with the driven gear; and a positioning portion, which positions the position of the driving gear when the operating member is in the locked position and the unlocked position, but is not limited to this. For example, the driving gear can also be configured to have a gear portion without a positioning portion. For example, the configuration of the driving gear can be changed according to the design specifications.

[0111] In the above-mentioned embodiment, the gear portion and the positioning portion are arranged at different positions on the circumference of an imaginary circle centered on the support shaft as the rotation center of the driving gear, but the present invention is not limited to this. For example, the gear portion and the positioning portion may not be arranged at different positions on the circumference of an imaginary circle centered on the support shaft as the rotation center of the driving gear. For example, the gear portion and the positioning portion may be arranged on the circumference of an imaginary circle with different diameters centered on the support shaft as the rotation center of the driving gear. For example, the configuration of the gear portion and the positioning portion can be changed according to the design specifications.

[0112] In the above-mentioned embodiment, the following example is cited for explanation, the cable as the traction member is configured to be movable between the starting end and the terminal end in the direction of linear motion, and the manual unlocking device further includes a limiting wall that contacts the driving gear before the cable is located at the starting end or the terminal end when the cable moves in the direction of linear motion to limit the rotational motion of the driving gear, but it is not limited to this. For example, the manual unlocking device may not include the limiting wall. For example, the setting form of the limiting wall can be changed according to the design specifications.

[0113] In the above-mentioned embodiment, the following example is cited for explanation, the first connecting rod is configured to be rotatable around the first axis parallel to the support axis at the connection portion where one end of the first connecting rod is connected to the operating member, and the first axis is configured at a position that does not overlap with the rotation trajectory of the second connecting rod when viewed from the direction along the first axis, but it is not limited to this. For example, it may also be that the first axis is configured at a position that overlaps with the rotation trajectory of the second connecting rod when viewed from the direction along the first axis. For example, the configuration form of the first axis can be changed according to the design specifications.

[0114] <Second embodiment>

[0115] Hereinafter, a manual unlocking device 201 according to a second embodiment will be described. In the following description, parts having the same functions as those described in the first embodiment are denoted by the same names and reference numerals, and specific descriptions of the functions are omitted.

[0116] Figure 6 It is a perspective view of the manual unlocking device 201 according to the second embodiment in the locked state. Figure 7 It is a front view of the manual unlocking device 201 according to the second embodiment in the locked state. Figure 8 This is a front view of the manual unlocking device 201 according to the second embodiment during operation. Fig. 9 It is a front view of the manual unlocking device 201 according to the second embodiment in the unlocked state.

[0117] Refer to Figure 6 to Figure 9 The manual unlocking device 201 includes an operating member 2, a conversion mechanism 203, a pulling member 4, a slider mechanism 5, a transmission member 209, and a housing 8. In each figure, a part of the housing 8 (eg, a cover) is omitted.

[0118] The operating member 2 can be manually operated in the locked position ( Figure 7 shown in the unlocked position ( Fig. 9 The operating member 2 is configured to rotate between the locked position and the unlocked position by 90 degrees with the support shaft 20 as the center. The operating member 2 extends in a vertical direction at the locked position. The operating member 2 extends in a horizontal direction at the unlocked position.

[0119] The conversion mechanism 203 converts the rotational motion of the operating member 2 into a linear motion. The conversion mechanism 203 has a plurality of connecting rods 221, 222, 223 that are located at a dead point when the operating member 2 rotates from the locked position to the unlocked position. One end of the plurality of connecting rods 221, 222, 223 is connected to the operating member 2, and the other end is connected to the slider mechanism 5. The slider mechanism 5 and the conversion mechanism 203 constitute a so-called slider crank mechanism. Multiple connecting rods 221, 222, and 223 include: a first connecting rod 221, one end of which is connected in a manner capable of rotating around a connecting portion connected to the operating member 2; a second connecting rod 222, one end of which is connected in a manner capable of rotating around a connecting portion connected to the other end of the first connecting rod 221, and the other end of which is connected in a manner capable of rotating around a connecting portion connected to a housing 8 (an example of a fixed portion); and a third connecting rod 223, one end of which is connected in a manner capable of rotating around a connecting portion connected to one end of the second connecting rod 222, and the other end of which is connected in a manner capable of rotating around a connecting portion connected to the slider mechanism 5.

[0120] The first link 221 is configured to be rotatable around a first axis 225 parallel to the support shaft 20 at a connection portion where one end of the first link 221 is connected to the operating member 2. The first link 221 extends from one end of the first link 221 to the other end toward the upper left of the figure in the locked position (see Figure 7 ). The first link 221 is at the unlocking position. Figure 7 The position of the first connecting rod 221 is close to the horizontal inclination and extends from one end to the other end toward the upper left of the figure (refer to Fig. 9 ).

[0121] The first link 221 supports a part of the transmission member 209 from both sides in the X direction at one end side, and supports one end of the second link 222 and the third link 223 from both sides in the X direction at the other end side. The first link 221 is set as a double-sided support structure. The first link 221 is not limited to the above structure, and can also be set as a single-sided support structure. The shape of the first link 221 can be changed according to the design specifications.

[0122] The length from one end to the other end of the second link 222 is shorter than the length from one end to the other end of the first link 221. The second link 222 is configured to be rotatable around a second axis 226 parallel to the first axis 225 at a connection portion where one end of the second link 222 is connected to the other end of the first link 221. The second link 222 is configured to be rotatable around a third axis 227 parallel to the second axis 226 at a connection portion where the other end of the second link 222 is connected to the housing 8. The second link 222 extends from one end to the other end of the second link 222 toward the upper left of the figure at an inclination closer to vertical than that of the first link 221 in the locked position (see FIG. 2 ). Figure 7 ). The second link 222 extends vertically upward from one end to the other end of the second link 222 at the unlocked position.

[0123] The length from one end to the other end of the third link 223 is shorter than the length from one end to the other end of the second link 222. The third link 223 is configured to be rotatable around the second axis 226 at a connection portion where one end of the third link 223 is connected to one end of the second link 222. The third link 223 is connected to the slider mechanism 5 at a connection portion where the other end of the third link is connected to the slider mechanism 5 so as to be rotatable around a fourth axis 228 parallel to the third axis 227. The third link 223 extends from one end to the other end of the third link 223 toward the lower left of the figure (at a nearly horizontal inclination) in the locked position (see FIG. 1 ). Figure 7 ). The third link 223 extends vertically downward from one end to the other end of the third link 223 at the unlocked position (refer to Fig. 9 ).

[0124] One end of the pulling member 4 is connected to the conversion mechanism 203. The other end of the pulling member 4 is connected to the locking device 16. The pulling member 4 transmits the linear motion transmitted from the conversion mechanism 203 to the locking device 16 to unlock the door device 15. The pulling member 4 is configured to be movable between the starting end P1 and the terminal end P2 in synchronization with the slider 31 in the direction of the linear motion.

[0125] The slider mechanism 5 supports the traction member 4 (e.g., internal cable) so as to be movable in the direction of linear motion. The other end of the traction member 4 is fixed to the slider mechanism 5. The other end of the third link 223 is connected so as to be rotatable around the connection portion connected to the slider mechanism 5.

[0126] The slider mechanism 5 includes a slider 31 provided with a fourth shaft 228 and a guide rail 32 extending in the vertical direction. The slider 31 is supported by the guide rail 32 so as to be movable along the guide rail 32. The configuration of the slider mechanism 5 is not limited to the above configuration and can be changed according to design specifications.

[0127] The slider 31 is subjected to a pressing force (elastic force) generated by an elastic portion such as a spring via the traction member 4. Therefore, a force that pulls the slider 31 vertically upward acts together with the traction member 4.

[0128] The transmission member 209 transmits the rotation of the support shaft 20 to one end of the first link 221. The transmission member 209 includes: a first transmission portion 291 provided with the support shaft 20; a second transmission portion 292 provided with the first shaft 225; and a positioning portion 42 for positioning the position of the transmission member 209 when the operating member 2 is located at the locked position and the unlocked position.

[0129] The rotation center of the first transmission portion 291 is connected to the operation member 2 via the support shaft 20. The second transmission portion 292 is integrally connected to the first transmission portion 291, and transmits the rotational motion of the operation member 2 to the first link 221.

[0130] One end of the second transmission part 292 overlaps with the support shaft 20 when viewed from the direction along the first shaft 225. The first shaft 225 is provided at the other end of the second transmission part 292. The second transmission part 292 extends from one end to the other end of the second transmission part 292 toward the right side of the figure in the locked position (see Figure 7 ). The second transmission part 292 extends vertically upward from one end to the other end of the second transmission part 292 at the unlocked position (see Fig. 9 ).

[0131] The positioning portion 42 is provided at the outer peripheral portion of the first transmission portion 291 in the transmission member 209. The first transmission portion 291 is formed with: a first recessed portion 43 for positioning the position of the transmission member 209 when the operating member 2 is located at the locked position; and a second recessed portion 44 for positioning the position of the transmission member 209 when the operating member 2 is located at the unlocked position. The positioning portion 42 is configured to include a wall portion of the transmission member 209 forming the first recessed portion 43 and the second recessed portion 44.

[0132] For example, when the operating member 2 is located at the locking position, the convex portion 62 of the plunger 61 is engaged with the first concave portion 43 of the transmission member 209 (see Figure 7 ). Thus, the position of the transmission member 209 can be positioned when the operation member 2 is located at the locking position.

[0133] On the other hand, when the operating member 2 is located at the unlocking position, the convex portion 62 of the plunger 61 is engaged with the second concave portion 44 of the transmission member 209 (see Fig. 9 ). Thus, the position of the transmission member 209 can be positioned when the operation member 2 is located at the unlocking position.

[0134] Please refer to the following Figure 7 to Figure 9 , an example of the locked state of a door and the manual unlocking action is explained.

[0135] For example, in a normal state such as when the vehicle is traveling, the door 11 is in the fully closed position and is locked by the locking device 16 (see Figure 1 ). For example, the door is locked while the vehicle is moving or when it is not possible to get on or off the vehicle through the door on the side opposite to the platform.

[0136] exist Figure 7In the locked state shown, the cable (pulling member 4) is pulled vertically upward due to the pressing force (elastic force) generated by the elastic part such as the spring not shown. At this time, the slider 31 is pulled vertically upward together with the cable. The slider 31 is arranged at a position on the starting end P1 side along the direction of the cable linear motion.

[0137] Refer to Figure 7 to Figure 9 , the operating member 2 is rotated in the direction of arrow R. For example, the operating member 2 is rotated 90 degrees between the locked position and the unlocked position around the support shaft 20. In this case, the transmission member 209 connected to the support shaft 20 is rotated in the direction of arrow R1.

[0138] The rotation of the transmission member 209 transmits the rotational motion of the operation member 2 to the first link 221. Then, the second link 222 and the third link 223 are connected to each other. Figure 7 As Figure 8 , Fig. 9 The rotation movement is shown in this way. Fig. 9 At the position shown, one end of the second link 222 and the third link 223 are arranged vertically below the third shaft 227. Fig. 9 At the position shown, the second axis 226, the third axis 227, and the fourth axis 228 are arranged on the same vertical line.

[0139] The rotational movement of the operating member 2 is converted into a linear motion toward the vertical downward direction by the rotational movement of the third connecting rod 223. Then, the slider 31 moves toward the vertical downward direction along the guide rail 32. At this time, the cable overcomes the pressing force generated by the elastic part such as the spring by the slider 31 and is pulled toward the vertical downward direction. Thus, the linear motion transmitted from the conversion mechanism 203 is transmitted to the locking device 16, so that the door device 15 is unlocked.

[0140] When the operating member 2 rotates from the locked position to the unlocked position, the second link 222 and the third link 223 are at dead point positions on a straight line from one end to the other end. Fig. 9 In the unlocked position shown, the second link 222 from one end to the other end and the third link 223 from one end to the other end are arranged on the same vertical line.

[0141] exist Fig. 9 In the unlocked position shown, the transmission member 209 is positioned by fitting the convex portion 62 of the plunger 61 with the second concave portion 44 of the transmission member 209. For example, the plunger 61 prevents the operating member 2 from returning to its original position (locked position) due to its own weight in the unlocked position.

[0142] Fig.10 It is an explanatory diagram of the toggle mechanism of the manual unlocking device 201 according to the second embodiment.

[0143] Refer to Fig.10 , the second link 222, the third link 223 and the slider 31 constitute a toggle mechanism. In the example of the figure, the third axis 227 is set as a fixed point, the fourth axis 228 moves in the vertical direction, the force applied to the second axis 226 is set as F1, the cable pulling force is set as F2, and the slider movement direction is set as the Z direction. From the X direction, the distance between the center points of the second axis 226 and the fourth axis 228 is shorter than the distance between the center points of the second axis 226 and the third axis 227.

[0144] The angle (acute angle) formed by the center point of the third axis 227, the center point of the second axis 226, and the center point of the fourth axis 228 is divided into angle A1 and angle A2 by a perpendicular line drawn from the slider movement direction (Z direction). The relationship in this case is expressed as the following equation (1).

[0145]

Formula 1

[0146]

[0147] According to the above formula (1), as the unlock position approaches (A1+A2)=180 degrees, the cable pulling force F2 can be exerted with a smaller force F1. The force F1 (equivalent to the operating force of the operating member 2) near the unlock position where the cable pulling force F2 is the largest is reduced, so the operation becomes easier.

[0148] As described above, in the manual unlocking device 201 of the present embodiment, the plurality of links 221, 222, and 223 include: a first link 221, one end of which is connected to the operating member 2 so as to be rotatable around a connection portion connected to the operating member 2; a second link 222, one end of which is connected to the other end of the first link 221 so as to be rotatable around a connection portion connected to the housing 8, and a third link 223, one end of which is connected to the connection portion connected to one end of the second link 222 so as to be rotatable around a connection portion connected to the slider mechanism 5, and the other end of which is connected to the slider mechanism 5. When the operating member 2 rotates from the locked position to the unlocked position, the second link 222 and the third link 223 are located at dead point positions on a straight line from one end to the other end.

[0149] According to this structure, when the operating member 2 is operated to rotate to the unlocked position, thereby unlocking the door device 15, the second link 222 is located at a dead point position from one end to the other end and the third link 223 is located at a dead point position on a straight line from one end to the other end. Therefore, even if an external force is applied to the traction member 4 from the locking device 16 in the unlocked state, the operating member 2 can be kept in the unlocked position without the need for power.

[0150] In the manual unlocking device 201 of the present embodiment, the operation member 2 is rotatable between the locked position and the unlocked position around the support shaft 20. The manual unlocking device 201 further includes a transmission member 209 that transmits the rotation of the support shaft 20 to one end of the first link 221.

[0151] According to this structure, it is not necessary to provide a gear mechanism (gear portion) for transmitting rotation, and thus it contributes to improvement of strength and rigidity.

[0152] In the manual unlocking device 201 of the present embodiment, the length from one end to the other end of the third link 223 is shorter than the length from one end to the other end of the second link 222 .

[0153] According to this structure, the third link 223 can easily follow the rotation of the first link 221, compared with a case where the length from one end to the other end of the third link 223 is longer than the length from one end to the other end of the second link 222. Therefore, the operation member 2 can be operated more easily.

[0154] In the manual unlocking device 201 of the present embodiment, the second link 222 , the third link 223 , and the slider 31 constitute a toggle mechanism, and satisfy the above-mentioned formula (1).

[0155] According to this configuration, by positioning the links 222 and 223 at the dead point positions at the unlocking position, the pulling force of the cable can be exerted with a smaller operating force as the unlocking position where a larger load is applied is approached while maintaining the advantage of increased holding force.

[0156] <Other Modifications>

[0157] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0158] In the above-mentioned embodiment, the vehicle door is configured as an example of a pair of double-leaf sliding doors for opening and closing the boarding and alighting entrance of a railway vehicle, but the invention is not limited thereto. For example, the vehicle door may also be provided in a vehicle other than a railway vehicle. For example, the vehicle door may also be configured as a single-leaf sliding door.

[0159] In the above-mentioned second embodiment, an example is given in which the other end of the second connecting rod is connected in a manner that can rotate around the connection portion connected to the housing, but the invention is not limited thereto. For example, the other end of the second connecting rod may be connected in a manner that can rotate around the connection portion connected to the vehicle body or other fixed portion other than the housing. The connection form (fixed portion) of the other end of the second connecting rod may be changed according to the design specifications.

[0160] Furthermore, the components in the above-described embodiments may be replaced with well-known components without departing from the spirit of the present invention. In addition, the above-described modifications may be combined.

[0161] In the embodiments disclosed in this specification, for a component composed of multiple objects, the multiple objects can also be integrated, and conversely, for a component composed of one object, it can be divided into multiple objects. Regardless of whether it is integrated or not, it can be configured in a manner that can achieve the purpose of the invention.

[0162] In the embodiments disclosed in this specification, for an embodiment in which multiple functions are dispersedly arranged, some or all of the multiple functions may be centralized, and conversely, for an embodiment in which multiple functions are centralized, some or all of the multiple functions may be decentralized. Regardless of whether the functions are centralized or decentralized, they may be configured in a manner that can achieve the purpose of the invention.

Claims

1. A manual unlocking device for manually unlocking a locking device that locks a door device that opens and closes a vehicle entrance, wherein: The manual unlocking device has: An operating member capable of rotationally moving between a locked position and an unlocked position by manual operation; a conversion mechanism that converts the rotational motion of the operating member into a linear motion; as well as A pulling member, one end of which is connected to the conversion mechanism and the other end of which is connected to the locking device, transmits the linear motion transmitted from the conversion mechanism to the locking device to unlock the door device. The conversion mechanism has a plurality of links that are located at dead center positions when the operating member rotationally moves from the locking position to the unlocking position.

2. The manual unlocking device according to claim 1, wherein: The traction member is a cable, The manual unlocking device further includes a slider mechanism to which the cable is fixed and supports the cable so as to be movable in a direction along the linear motion. One end of the plurality of links is connected to the operation member, and the other end thereof is connected to the slider mechanism.

3. The manual unlocking device according to claim 2, wherein: The plurality of links include: a first link, one end of which is connected in a manner rotatable around a connection portion connected to the operating member; and a second link, one end of which is connected in a manner rotatable around a connection portion connected to the other end of the first link, and the other end of which is connected in a manner rotatable around a connection portion connected to the slider mechanism. When the operation member rotates from the locking position to the unlocking position, the first link from one end to the other end and the second link from one end to the other end are at dead point positions located on a straight line.

4. The manual unlocking device according to claim 3, wherein: The operating member can rotate 90 degrees between the locking position and the unlocking position around the support shaft. The manual unlocking device further includes a gear mechanism that reduces the speed of rotation of the support shaft at a predetermined reduction ratio and transmits the reduced speed to one end of the first link.

5. The manual unlocking device according to claim 4, wherein: The gear mechanism comprises: a driving gear whose rotation center is rotatably connected to the support shaft; and A driven gear, the rotation center of which is connected to one end of the first link, is meshed with the drive gear to transmit the rotational motion of the operating member to the first link. The driving gear has: a gear portion meshing with the driven gear; and a positioning portion for positioning the driving gear when the operating member is located at the locking position and the unlocking position, The gear portion and the positioning portion are arranged at different positions from each other on the circumference of an imaginary circle centered on the support shaft as the rotation center of the drive gear.

6. The manual unlocking device according to claim 5, wherein: The cable as the pulling member is configured to be movable between a starting end and a terminal end in the direction of the linear motion. The manual unlocking device further includes a restriction wall that contacts the drive gear and restricts rotational movement of the drive gear before the cable is located at the starting end or the ending end when the cable moves in the direction along the linear motion.

7. The manual unlocking device according to any one of claims 4 to 6, wherein: The first link is configured to be rotatable around a first axis parallel to the support axis at a connection portion where one end of the first link is connected to the operating member. The first axis is arranged at a position not overlapping with a rotation trajectory of the second link when viewed from a direction along the first axis.

8. The manual unlocking device according to claim 2, wherein: The plurality of links include: a first link, one end of which is connected in a manner that allows rotation around a connection portion connected to the operating member; a second link, one end of which is connected in a manner that allows rotation around a connection portion connected to the other end of the first link, and the other end of which is connected in a manner that allows rotation around a connection portion connected to a fixed portion; and a third link, one end of which is connected in a manner that allows rotation around a connection portion connected to one end of the second link, and the other end of which is connected in a manner that allows rotation around a connection portion connected to the slider mechanism. When the operation member rotates from the locking position to the unlocking position, the second link from one end to the other end and the third link from one end to the other end are at dead point positions located on a straight line.

9. The manual unlocking device according to claim 8, wherein: The operating member is rotatable about the support shaft between the locking position and the unlocking position. The manual unlocking device further includes a transmission member that transmits the rotation of the support shaft to one end of the first link.

10. The manual unlocking device according to claim 8 or 9, wherein: The length from one end to the other end of the third link is shorter than the length from one end to the other end of the second link.

Images