Motion transmission unit, door shutter device, door

Abstract

To enable easier unlocking operation than a conventional door shutter device.SOLUTION: The motion transmission unit of the present invention includes a mounting stay, a joint slidably provided on the mounting stay, a foot member slidably provided on the mounting stay, a rod bar installed between the joint and the foot member, and an elastic body that can expand and contract in the length direction of the rod bar. The motion transmission unit includes an auxiliary elastic body that can bias the joint in the unlocking direction when the door is unlocked. The door shutter device of the present invention includes a lock, the motion transmission unit of the present invention, and a shielding unit. The door of the present invention is provided with the door shutter device of the present invention as a door shutter device that blocks a gap that is generated around the door.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a motion transmission unit which is a component of a shutter device for a door, a shutter device for a door provided with the motion transmission unit, and a door provided with the shutter device for a door.

Background Art

[0002] In a private room such as a toilet, ensuring ventilation is required from the perspective of hygiene, etc., and it is necessary to create a gap around the door when the door is closed. On the other hand, many people are concerned about the noise and odors generated during use, and there is a demand to prevent noise and odors from leaking through the gap around the door.

[0003] In view of such circumstances, prior to the present application, the applicant of the present case developed a shutter device for a door that can shield the gap generated between the door and the floor surface as needed and obtained a patent (Patent Document 1).

[0004] This shutter device for a door includes a latch lock, a shutter device, and a motion transmission unit, and is configured such that the power generated when the latch lock is locked and unlocked is transmitted to the shutter device via the motion transmission unit, causing the shutter device to move up and down and opening and closing the gap between the door and the floor surface.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the shutter device for a door described in Patent Document 1, a coil spring biased in the extending direction is built into the leg member of the motion transmission unit, and since a force to compress the coil spring is required during unlocking, the operation during unlocking is heavy, and there is room for improvement in this regard.

[0007] The present invention has been made in view of these circumstances, and its problem to be solved is to provide a motion transmission unit that can be unlocked more easily than conventional door shutter devices, a door shutter device equipped with the motion transmission unit, and a door equipped with the door shutter device. [Means for solving the problem]

[0008] [Motor transmission unit] The motion transmission unit of the present invention comprises a mounting stay, a joint slidably provided on the mounting stay, a foot member slidably provided on the mounting stay, a rod bar provided between the joint and the foot member, and a main elastic body that is extendable and retractable in the longitudinal direction of the rod bar, and further comprises an auxiliary elastic body that can bias the joint in the unlocking direction.

[0009] [Door shutter device] The door shutter device of the present invention comprises a lock, a motion transmission unit, and a shielding unit, and transmits the rotational motion of the lock to the shielding unit via the motion transmission unit, thereby shielding the gap that occurs around the door with the shielding unit, and the motion transmission unit is the motion transmission unit of the present invention.

[0010] [door] The present invention relates to a door equipped with a door shutter device that seals the gaps that occur around the door, and the door shutter device is the door shutter device of the present invention. [Effects of the Invention]

[0011] According to the present invention, because an auxiliary elastic body is provided, the unlocking operation can be performed more easily compared to conventional door shutter devices due to its action. [Brief explanation of the drawing]

[0012] [Figure 1] An explanatory diagram showing an example of a door (swing door) equipped with the door shutter device of the present invention. [Figure 2] Explanatory drawing showing an example of a lock [Figure 3] Exploded explanatory drawing of the lock in Fig. 2 [Figure 4] Exploded explanatory drawing of the lock in Fig. 2 [Figure 5] (a) is an explanatory drawing showing the internal structure of the lock in Fig. 2 and the positional relationship of the movable arm during unlocking, and (b) is an explanatory drawing showing the internal structure of the lock in Fig. 2 and the positional relationship of the movable arm during locking. [Figure 6] Explanatory drawing showing an example of a motion transmission unit [Figure 7] Exploded explanatory drawing of the motion transmission unit in Fig. 6 [Figure 8] Explanatory drawing showing an example of a shielding unit [Figure 9] Exploded explanatory drawing of the shielding unit in Fig. 8 [Figure 10] (a) to (c) are explanatory drawings of the operation of the auxiliary elastic body. [Figure 11] (a) to (c) are explanatory drawings of the operation of the shielding unit. [Figure 12] Explanatory drawing showing another example of a lock [Figure 13] Exploded explanatory drawing of the lock in Fig. 12 [Figure 14] (a) is an explanatory drawing showing the internal structure of the lock in Fig. 12 and the positional relationship of the movable arm during unlocking, and (b) is an explanatory drawing showing the internal structure of the lock in Fig. 12 and the positional relationship of the movable arm during locking.

Mode for Carrying Out the Invention

[0013] (Embodiment) An example of an embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, the shutter device for a door of the present invention is mounted on a door D and used. The shutter device for a door in this embodiment includes a lock 10, a motion transmission unit 30, and a shielding unit 50.

[0014] <00!00095><Lock> <000009!'6>The lock 10 is a unit for locking or unlocking the door D. As shown in Figs. 2 to 4, the lock 10 in this embodiment includes a case body 11, a case lid 12, a front plate portion 13, a thumb turn 14, and a movable arm 15.

[0015] Each component constituting the tablet 10 is arranged such that when mounted on the door D, the case body 11, the case lid 12, and the movable arm 15 are inside the door D, the front plate portion 13 is at a position exposed on the edge surface of the door D, and the thumb turn 14 is at a position exposed on the surface of the door D. An attachment plate 29 having a latch entrance / exit 29a and a trigger entrance / exit 29b is attached to the front plate portion 13.

[0016] The case body 11 is a shallow-bottomed housing with one side open, and inside it, an opening / closing mechanism for opening and closing the door D by operating the door handle H and a motion conversion mechanism for converting the rotational motion of the thumb turn 14 into a linear motion are provided.

[0017] The opening / closing mechanism of this embodiment mainly includes a latch bolt 16, a latch biasing spring 17, a guide frame 18, a rotating hub 19, a hub retainer 20, and a hub biasing spring 21.

[0018] The latch bolt 16 is a member that fits into the fitting hole of the striker installed on the door frame F, and is biased by the latch biasing spring 17 so as to protrude from the bolt entrance / exit 13a of the front plate portion 13. In this embodiment, a coil spring is used as the latch biasing spring 17, but the latch biasing spring 17 may be other than a coil spring.

[0019] A downward U-shaped guide frame's 18 is provided on the base side of the latch bolt 16. As shown in FIG. 3, a bolt groove 16a is provided on the base side of the latch bolt 16. The bolt groove 16a is locked to the periphery of a notch recess 18a provided on one end side of the guide frame 18.

[0020] The latch bolt 16 is configured such that as the guide frame 18 slides, the latch bolt 16 protrudes from and retracts into the bolt entrance / exit 13a.

[0021] A rotating hub 19 is provided at the other end of the guide frame 18, which rotates when the door handle H is operated. An insertion hole 19a is provided in the center of the rotating hub 19, and the mounting shaft of the door handle H (Figure 1) is inserted into this insertion hole 19a. The rotating hub 19 is fitted into a hub mounting hole 11d formed in the case body 11.

[0022] A first locking portion 19b that engages with the guide frame 18 is provided on one end of the rotating hub 19 in the width direction, a second locking portion 19c that engages with the interlocking plate 27 is provided on the other end in the width direction, and a third locking portion 19d that engages with the hub retainer 20 is provided on the lower end.

[0023] The hub retainer 20 is a component that restrains the rotating hub 19 and restricts its rotation. In this embodiment, the hub retainer 20 includes a spring-locking projection 20a that protrudes from the door edge side and a side projection 20b that locks onto the case lid 12.

[0024] A hub biasing spring 21 is connected to the spring locking projection 20a, which is biased in a direction that holds the rotating hub 19 in place. The rotating hub 19 is held in a predetermined position by the biasing force of the hub biasing spring 21, which causes the hub retainer 20 to press against the third locking portion 19d.

[0025] In the opening and closing mechanism configured as described above, when the door handle H is lowered, the pivot hub 19 rotates, and the guide frame 18, which is locked to the pivot hub 19, moves backward (towards the door edge). When the guide frame 18 moves backward, the latch bolt 16 moves in the retracted direction as a result of this movement, and the door D becomes ready to be opened.

[0026] On the other hand, when the lowered door handle H is returned (released), the pivot hub 19 rotates in the opposite direction, and the guide frame 18, which is locked to the pivot hub 19, moves forward (towards the door edge). As the guide frame 18 moves forward, the latch bolt 16 moves in a protruding direction, and the latch bolt 16 engages with the mounting hole of the strike plate, closing the door D.

[0027] Next, the locking and unlocking mechanism will be described. The locking and unlocking mechanism of this embodiment mainly comprises a trigger 22, a guide plate 23, a trigger biasing spring 24, a rotating cam 25, a cam biasing spring 26, an interlocking plate 27, and a link 28.

[0028] The trigger 22 is a component that prevents the thumb turn 14 from being operated when the door D is open. By preventing the operation of the thumb turn 14 when the door is open using the trigger 22, it is possible to prevent the door D from being opened or closed while the sealing material 52, which will be described later, is in contact with the floor surface.

[0029] As shown in Figure 4, the trigger 22 of this embodiment comprises a trigger body 22a and a triangular-shaped head 22b in plan view that protrudes from the front side of the trigger body 22a. The trigger 22 is biased by a trigger biasing spring 24, so that the head 22a protrudes from the trigger opening 13b of the front plate 13.

[0030] In the figure, a guide plate 23 is provided on the back side of the trigger 22. In this embodiment, the guide plate 23 is a horizontally elongated member, with an elongated guide hole 23a in the longitudinal direction of the guide plate 23 on the door-side surface and a protruding part 23b at the end on the door-side end.

[0031] A guide pin 11a, which protrudes from the inner surface of the case body 11, is positioned in the guide hole 23a, and a trigger biasing spring 24, which biases the trigger 22 toward the trigger entrance 13b, is positioned in the guide hole 23a toward the door edge side of the guide pin 11a.

[0032] The abutment projection 23b is pressed against the rotating cam 25 by the biasing force of the trigger biasing spring 24, and this biasing force restricts the rotation of the rotating cam 25.

[0033] An interlocking plate 27 is provided on the front side of the door end of the guide plate 23. In this embodiment, the interlocking plate 27 is a vertically elongated member. A first restricting portion 27a is provided on the lower end of the interlocking plate 27, and a second restricting portion 27b is provided on the upper end.

[0034] The first restricting portion 27a is the part that contacts the second locking portion 19c of the rotating hub 19 to restrict the rotation of the rotating hub 19, and the second restricting portion 27b is the part that contacts the cylindrical portion 25b of the rotating cam 25 to restrict the rotation of the rotating cam 25.

[0035] A rotating cam 25 is provided on the front side of the interlocking plate 27. The rotating cam 25 in this embodiment has a cylindrical portion 25b with an insertion hole 25a into which the mounting shaft 14a of the thumb tongue 14 is inserted, a block portion 25c provided below the cylindrical portion 25b, and a protruding portion 25d that protrudes outward from the cylindrical portion 25b. The cylindrical portion 25b is designed to fit into a cam mounting hole 11c formed in the case body 11.

[0036] A first projection 25e and a second projection 25f are provided on the surface of the block portion 25c. The first projection 25e is the part to which one end of the cam biasing spring 26, which is located on the front side of the block portion 25c, is locked, and the second projection 25f is the part to which one end of the link 28, which is located on the front side of the block portion 25c, is locked.

[0037] In this embodiment, a torsion spring is used as the cam biasing spring 26. One end of the torsion spring is secured to the first projection 25e of the block portion 25c, and the other end is secured to the spring attachment projection 11b that protrudes into the case body 11.

[0038] The link 28 in this embodiment is a vertically elongated thin plate material having circular portions at its upper and lower ends. A first through-hole 28a is provided in the circular portion at the upper end, and a second through-hole 28b is provided in the circular portion at the lower end. The second projection 25f of the block portion 25c is fitted into the first through-hole 28a, and the connecting projection 15a of the movable arm 15, which will be described later, is fitted into the second through-hole 28b.

[0039] The movable arm 15 is a component that contacts the joint 32 of the motion transmission unit 30, which will be described later, and is used to move the motion transmission unit 30 up and down.

[0040] In this embodiment, the movable arm 15 is a horizontally elongated ladder-like member, and a connecting projection 15a is provided at the end on the door-side side, which fits into the second through-hole 28b of the link 28. A vertical projection 15b is provided on the surface of the movable arm 15, which fits into the lid-side guide groove 12a formed in the case lid 12.

[0041] In the motion conversion mechanism configured as described above, when the thumb turn 14 (Figure 1) is turned in the locking direction (clockwise) as shown in Figure 5(a), the rotating cam 25 rotates in the same direction, and as the rotating cam 25 rotates, the link 28, which is locked to the rotating cam 25, rotates counterclockwise and is pulled up. When the link 28 is pulled up, the movable arm 15 connected to the lower end of the link 28 is pulled up, and the motion transmission unit 30 (described later) that is in contact with the movable arm 15 is pulled up.

[0042] On the other hand, when the thumb turn 14 (Figure 1) is turned in the unlocking direction (counterclockwise) in the state shown in Figure 5(b), the rotating cam 25 rotates in the same direction, and as the rotating cam 25 rotates, the link 28 that is locked to the rotating cam 25 rotates clockwise and is pushed down. When the link 28 is pushed down, the movable arm 15 connected to the lower end of the link 28 is pushed down, and the motion transmission unit 30 that is in contact with the movable arm 15 is pushed down.

[0043] A case lid 12 is attached to the front side of the case body 11, which houses the aforementioned components. On the case lid 12, a lid-side cam mounting hole 12c and a lid-side hub mounting hole 12d are provided at positions opposite to the cam mounting hole 11c and hub mounting hole 11d of the case body 11, respectively.

[0044] Furthermore, a lid-side guide groove 12a and a lid-side locking groove 12b are provided on the case lid 12 at positions opposite to the protrusion 15b of the movable arm 15 and opposite to the side projection 20b of the hub retainer 20.

[0045] The lock configuration described here is just one example. The lock configuration is not limited to this embodiment, and modifications such as omissions, additions, and substitutions can be made to the extent that the intended purpose can be achieved.

[0046] <Motion transmission unit> Next, the motion transmission unit 30 will be described. As shown in Figure 6, the motion transmission unit 30 of this embodiment mainly comprises a mounting stay 31, a joint 32, an auxiliary elastic body 33, a rod bar 34, and a leg member 35.

[0047] The mounting stay 31 is a component that serves as the backbone of the motion transmission unit 30. As an example, the mounting stay 31 shown in Figure 7 comprises a vertically elongated trough-shaped stay body 31a and a stay cap 31b attached to the upper end of the stay body 31a.

[0048] As shown in Figure 7, the stay cap 31b in this embodiment is a thin plate-shaped member that fits inside the stay body 31a, and an elastic body arrangement portion 31c is provided on the front side where a part of the auxiliary elastic body 33 is arranged. The elastic body arrangement portion 31c is formed between two opposing protrusions 31d.

[0049] The joint 32 is a component that slides (moves up and down) in conjunction with the movement of the movable arm 15. The joint 32 is positioned on the upper front side of the mounting stay 31 and is connected to the stay body 31a so as to be able to slide along the longitudinal direction of the stay body 31a.

[0050] The joint 32 in this embodiment includes an arm housing portion 32a that accommodates the movable arm 15, a projection housing portion 32b that accommodates the projection 31d of the stay cap 31b, an elastic body housing portion 32c that accommodates a part of the auxiliary elastic body 33, a rod bar housing portion (not shown) that accommodates the rod bar 34, and an inner rail 32d that fits into the mounting stay 31.

[0051] The auxiliary elastic body 33 is a member that assists in the locking and / or unlocking operation. In this embodiment, a torsion spring is used as the auxiliary elastic body 33. The auxiliary elastic body 33 is provided at a position that straddles the mounting stay 31 and the joint 32, specifically at a position that straddles the stay cap 31b and the joint 32.

[0052] More specifically, one end of the auxiliary elastic body 33 is positioned between two projections 31d and pivotally supported by a first locking pin 31e that is installed between the two projections 31d, while the other end is positioned between two opposing pieces 32e and 32f that constitute the elastic body receiving portion 32c of the joint 32 and pivotally supported by a second locking pin 32g that is installed between the two opposing pieces 32e and 32f.

[0053] By positioning the auxiliary elastic body 33 across the stay cap 31b and the joint 32, the biasing force of the auxiliary elastic body 33 acts to push the joint 32 downwards when unlocking, and acts to pull the joint 32 upwards when locking, making unlocking and locking operations easier. The auxiliary elastic body 33 can also be a spring other than a torsion spring, such as a coil spring, or various other elastic materials.

[0054] The joint 32 and the mounting stay 31 are connected by fitting the inner rail 32d of the joint 32 into the stay body 31a, and the joint 32 and the rod bar 34 are connected by pivotally supporting the rod bar 34, which is housed in the rod bar housing portion (not shown) of the joint 32, with a connecting pin 36.

[0055] The rod bar 34 is a pipe-shaped member that is long in the vertical direction. The insertion portion 37a of the connecting shaft 37, which is inserted from below the leg member 35, is inserted into the lower end of the rod bar 34 and connected by a connecting pin 38.

[0056] A coil spring biased in the extension direction is provided on the outer circumference of the connecting shaft 37 as the main elastic body 39. The connecting shaft 37 and the main elastic body 39 are housed within the connecting shaft housing portion 35a of the leg member 35, which will be described later.

[0057] The aforementioned leg member 35 is a member that contacts the swinging body 53 of the shielding unit 50, which will be described later. The leg member 35 is positioned on the lower front side of the stay body 31a and is connected to the stay body 31a so as to be able to slide along the longitudinal direction of the stay body 31a.

[0058] In this embodiment, the foot member 35 is a boot-shaped member in side view, and a notched space (not shown) is provided at a position corresponding to the heel of the boot.

[0059] A bottomed connecting shaft housing portion 35a is provided on the upper side of the notched space. Although not shown in the illustration, the floor member of the connecting shaft housing portion 35a is provided with a through hole sized to allow the connecting shaft 37 (excluding the retaining flange 37b described later) to pass through, but not to allow the main elastic body 39 to pass through.

[0060] The lower end of the connecting shaft 37 housed in the connecting shaft housing 35a is provided with a retaining flange 37b that is larger in diameter than the rest of the connecting shaft 37. The upper end of the connecting shaft 37 is held in place by being connected to the rod bar 34, and the lower end is held in place by the retaining flange 37b at the lower end engaging with the bottom surface of the floor of the connecting shaft housing 35a.

[0061] An inner rail 35b for the leg member is provided on the back side of the leg member 35, which fits into the mounting stay 31. The inner rail 35b for the leg member is fitted in from the lower end side of the mounting stay 31, thereby connecting the leg member 35 and the mounting stay 31.

[0062] The motion transmission unit 30, configured as described above, is installed inside the door D by fixing the lower end of the mounting stay 31 to the horizontal frame (not shown) of the door D via an L-shaped fixing member 40, and fixing the stay cap 31b to the vertical frame (not shown) of the door D.

[0063] The configuration of the motion transmission unit 30 described herein is just one example. The configuration of the motion transmission unit 30 is not limited to this embodiment, and modifications such as omissions, additions, and substitutions can be made to the extent that the intended purpose can be achieved.

[0064] <Shielding Unit> Next, the shielding unit 50 will be described. As shown in Figures 8 and 9, the shielding unit 50 of this embodiment mainly comprises a shutter body 51, a sealing material 52, a oscillating body 53, a shutter guide 54, a shutter case 55, and a shutter cap 56.

[0065] The shutter body 51 is a component that shields the gap at the bottom of the door D. In this embodiment, the shutter body 51 is a component that is long in the width direction of the door D, and has a long groove-shaped sealing material receiving portion 51a on the bottom side and a long groove-shaped receiving groove 51b on the top side.

[0066] A sealing material 52 is housed in the sealing material housing portion 51a. The sealing material 52 can be made of various elastic materials such as rubber or silicone. In this embodiment, the sealing material 52 is a member of approximately the same length as the shutter body 51, and is provided in the sealing material housing portion 51a of the shutter body 51 such that its lower end protrudes below the lower end of the shutter body 51.

[0067] The accommodating groove 51b of the shutter body 51 is provided with a swinging body 53 for raising and lowering the shutter body 51. In this embodiment, the swinging body 53 is a horizontally elongated member, with a projection 53a that protrudes upward from one end in the longitudinal direction and a locking projection 53b that engages with a part of the shutter body 51 at the other end.

[0068] A support pin insertion hole 53c is provided at the upper part of the oscillating body 53, at a position eccentric to the protruding piece 53a side from the longitudinal center of the oscillating body 53. This support pin insertion hole 53c is a cylindrical member through which an oscillating body support pin 57, used to support the oscillating body 53 inside the shutter case 55, is inserted.

[0069] In the housing groove 51b of the shutter body 51, one shutter guide 54 is provided on each of the longitudinal outer sides of the oscillating body 53. The shutter guide 54 is a guide member for moving the shutter body 51 up and down horizontally.

[0070] Each shutter guide 54 comprises a cylindrical portion 54b having a screw hole 54a and a guide portion 54d having a guide elongated hole 54c. Each shutter guide 54 is fixed in the housing groove 51b of the shutter body 51 by screws (not shown).

[0071] The shutter case 55 is a long member that has a space for housing the shutter body 51, the oscillating body 53, etc. In this embodiment, the shutter case 55 is a downward-facing U-shaped member having opposing surfaces 55a and 55b, and an opening is provided on the lower side for the shutter body 51 to enter and exit.

[0072] The oscillating body 53, housed within the shutter case 55, is positioned between the two opposing surfaces 55a and 55b of the shutter case 55 and is pivotably supported by an oscillating body support pin 57 inserted through a first insertion hole 55c on the first surface 55a, a support pin insertion hole 53c of the oscillating body 53, and a second insertion hole 55d on the second surface 55b of the other opposing surface 55b.

[0073] Furthermore, the shutter body 51 housed within the shutter case 55 is positioned between the two opposing surfaces 55a and 55b of the shutter case 55 and is pivotally supported by guide support pins 58 inserted through the second through-hole 55e on the first surface of one opposing surface 55a, the guide elongated holes 54c of each shutter guide 54, and the second through-hole 55f on the second surface of the other opposing surface 55b.

[0074] The shutter case 55 is provided with a passage opening 55g through which the protruding piece 53a of the oscillating body 53 housed inside the shutter case 55 can pass. A rectangular ring material 55h is attached to the periphery of the passage opening 55g. The ring material 55h is made of an elastic material such as rubber or silicone.

[0075] The shutter case 55, which houses the shutter body 51, the oscillating body 53, and the shutter guide 54, is provided with shutter caps 56 at both longitudinal ends to close the openings at both longitudinal ends of the shutter case 55.

[0076] At the upper end of both shutter caps 56, there are fixing portions 56a for attaching to the vertical frame (not shown) of the door D. The shutter case 55, which houses the shutter body 51, the pivoting body 53, and the shutter guide 54, and has the shutter caps 56 attached, is positioned so that the fixing portions 56a are pressed against the end face of the door D, and can be fixed to the door D by fastening it with set screws (not shown).

[0077] The configuration of the shielding unit 50 described herein is just one example. The configuration of the shielding unit 50 is not limited to this embodiment, and modifications such as omissions, additions, and substitutions can be made to the extent that the intended purpose can be achieved.

[0078] (operation) Next, the operation of the shutter device of this embodiment will be described. Here, the operation will be described separately for the case where the locked door D is unlocked and the gap below the door D is opened, and for the case where the unlocked door D is locked and the gap below the door D is shielded by the shutter body 51.

[0079] <Action taken when opening the gap at the bottom of the door> First, we will explain the operation when opening the gap below door D. Figure 10(a) shows the positional relationship between the movable arm 15 and the joint 32 when locked. In this state, as shown in Figure 11(a), the foot member 35 of the motion transmission unit 30 is located away from the oscillating body 53, and the locking projection 53b side of the oscillating body 53 is lowered to its lowest position. At this time, the gap below door D is shielded by the shutter body 51.

[0080] When the thumb turn 14 is turned in the unlocking direction from this state, the movable arm 15 begins to move downward as shown in Figure 10(b). In this state, as shown in Figure 11(b), the leg member 35 of the motion transmission unit 30 begins to move downward, the locking projection 53b side of the oscillating body 53 begins to move upward, and the shutter body 51 begins to move upward.

[0081] If the thumb turn 14 is rotated further in the unlocking direction from this state, the movable arm 15 will move down to its lowest position as shown in Figure 10(c). In this state, as shown in Figure 11(c), the oscillating body 53 is pushed down to its lowest position by the leg member 35 of the motion transmission unit 30, and the shutter body 51 is housed inside the shutter case 55.

[0082] In this process, the biasing force of the auxiliary elastic body 33 acting on the joint 32 in the unlocking direction reduces the load during the unlocking operation. Therefore, compared to conventional door shutter devices without the auxiliary elastic body 33, the unlocking operation becomes lighter and operability is improved.

[0083] <Operation when the gap at the bottom of the door is blocked by the shutter body> Next, we will explain the operation when the gap below door D is shielded by the shutter body 51. Figure 10(c) shows the positional relationship between the movable arm 15 and the joint 32 when unlocked. In this state, as shown in Figure 11(c), the swinging body 53 is pushed down to its lowest position by the foot member 35 of the motion transmission unit 30, and the shutter body 51 is housed inside the shutter case 55.

[0084] When the thumb turn 14 is turned in the locking direction from this state, the movable arm 15 begins to rise as shown in Figure 10(b). In this state, as shown in Figure 11(b), the leg member 35 of the motion transmission unit 30 begins to rise, the locking projection 53b side of the oscillating body 53 begins to lower, and the shutter body 51 begins to lower.

[0085] If the thumb turn 14 is turned further in the locking direction from this state, the movable arm 15 is raised to the uppermost position as shown in Figure 10(a). In this state, as shown in Figure 11(a), the foot member 35 of the motion transmission unit 30 separates from the protruding piece 53a of the oscillating body 53, and the locking projection 53b side of the oscillating body 53 lowers to the lowest position. As a result, the shutter body 51 lowers to the lowest position, and the gap on the lower side of the door D is shielded by the shutter body 51.

[0086] In this embodiment, since a torsion spring is used as the auxiliary elastic body 33, the biasing force of the auxiliary elastic body 33 in the locking direction acts on the joint 32 even during the locking operation, thereby reducing the burden on the locking operation.

[0087] (Other embodiments)

[0088] In the above embodiment, one example is the case of shielding a gap that occurs below the door D, but the motion transmission unit 30 and door shutter device of the present invention can also be used as a unit and device to shield a gap that occurs on the leading edge side of the door D or above the door D.

[0089] In the above embodiment, the case where the door D is a hinged door is used as an example, but the motion transmission unit 30 and door shutter device of the present invention can be implemented and used on doors D other than hinged doors, such as sliding doors.

[0090] When the motion transmission unit 30 and door shutter device of the present invention are installed on a sliding door, a lock 100 as shown in Figures 12 and 13 can be used instead of the lock 10 shown in Figures 2 to 4.

[0091] The lock 100 shown in Figures 12 and 13 mainly comprises a lock case 111, a lock cover 112, a front plate 113, and an operating part 114. When installed on a door D, the lock case 111 and lock cover 112 are positioned inside the door D, the front plate 113 is exposed on the end grain of the door D, and the operating part 114 is exposed on the surface of the door D.

[0092] The lock case 111 is a shallow-bottomed housing that opens on one side. The lock case 111 is provided with a first vertical guide groove 111a, a spring-loaded pin 111b, a trigger member support projection 111c, a V-shaped guide groove 111d, a first arc groove 111e, a second arc groove 111f, a second vertical guide groove 111g, regulating pins 111h to 111j, and a positioning recess 111k, which will be described later. Inside the lock case 111 is a locking and unlocking mechanism that is locked and unlocked by operating the operating part 114.

[0093] The locking and unlocking mechanism of this embodiment mainly comprises a hook member 121, a first link member 122, a second link member 123, a third link member 124, a slide body 125, a torsion spring 126, an operating plate 127, and a trigger member 128.

[0094] The sickle member 121 is a member that fits into the fitting hole of the strike, and comprises a body portion 121a, a locking arm portion 121b provided on the upper end side of the body portion 121a, a lower end connecting portion 121c provided on the lower end side of the body portion 121a, and a middle connecting portion 121d provided at the middle position of the body portion 121a. The lower end connecting portion 121c is provided with a first connecting hole 121e, and the middle connecting portion 121d is provided with a second connecting hole 121f.

[0095] A first link member 122 is positioned on the front side of the sickle member 121. In this embodiment, the first link member 122 is a vertically elongated thin plate material with circular portions at its upper and lower ends. The upper circular portion has a first link upper hole 122a, and the lower circular portion has a first link lower hole 122b.

[0096] A second link member 123 is positioned on the back side of the first link member 122. The second link member 123 is a thin plate material with the same shape as the first link member 122, and has an upper second link hole 123a in the circular part at its upper end and a lower second link hole 123b in the circular part at its lower end.

[0097] A third link member 124 is positioned in front of the second link member 123. In this embodiment, the third link member 124 is a vertically rectangular thin plate material with both ends formed in an arc shape. A third link hole 124a is provided at the end (upper end) on the second link side, and a locking projection 124b that engages with the horizontally elongated hole 125c of the slide body 125 is provided at the other end (lower end).

[0098] A guide projection 124c is provided near the center of the third link member 124, which slides into the notched elongated hole 112m of the lock cover 112. The guide projection 124c is positioned toward the lock cover 112.

[0099] A sliding body 125 is provided on the back side of the third link member 124. In this embodiment, the sliding body 125 comprises a triangular base portion 125a and a rectangular arm portion 125b that is integrally provided with the base portion 125a at one corner of the base portion 125a.

[0100] The arm portion 125b is the part that fits into the arm housing portion 32a of the joint 32, and plays the role of contacting the inner surface of the arm housing portion 32a during locking or unlocking operations to transmit force to the joint 32.

[0101] A back projection (not shown) is provided on the back side of the base portion 125a, and a transversely elongated hole 125c that penetrates in the thickness direction is provided in the arm portion 125b. The back projection is slidably fitted into the first vertical guide groove 111a of the lock case 111.

[0102] On the back sides of the second link member 123 and the third link member 124, there are operating plates 127 that move up and down by operating the operating unit 114. In this embodiment, the operating plate 127 is made of a thin plate material and comprises a base portion 127a, a first locking portion 127b projecting upward from one end of the base portion 127a, and an upper projection 127c projecting upward from the other end in the width direction of the base portion 127a. An insertion hole 127d is provided near the center of the operating plate 127.

[0103] A spring-hanging projection 127e is provided on the surface of the first locking portion 127b, and one end of the torsion spring 126 is hooked onto the spring-hanging projection 127e. The other end of the torsion spring 126 is hooked onto a spring-hanging pin 111b that protrudes into the lock case 111.

[0104] A trigger member 128 is provided on the door-side of the control panel 127. Similar to the trigger 22 in the previous embodiment, the trigger member 128 in this embodiment is a member that prevents the control unit 114 from being operated when the door D is open.

[0105] In this embodiment, the trigger member 128 is a horizontally oriented L-shaped member, with a trigger projection 128a at the horizontal end and a trigger-side locking portion 128b at the downward end.

[0106] The trigger member 128 is provided with an elongated hole 128c through which a trigger member support projection 111c, which is projected into the lock case 111, is inserted. A trigger spring 129 is provided in the elongated hole 128c at a position on the door edge side of the trigger member support projection 111c.

[0107] The trigger spring 129 is a spring biased in the extension direction, and the biasing force of the trigger spring 129 causes the trigger projection 128a of the trigger member 128 to protrude from the trigger passage hole 113a of the front plate portion 113.

[0108] These components that make up the locking and unlocking mechanism are housed in the lock case 111 in the following arrangement.

[0109] The hook member 121 is positioned so that the first connecting hole 121e of the lower end connecting portion 121c overlaps with the V-shaped guide groove 111d of the lock case 111, and is connected to the inside of the lock case 111 by the first connector 130a.

[0110] Furthermore, the middle connecting portion 121d of the hook member 121 is positioned inside the lock case 111 such that the second connecting hole 121f communicates with the first arc groove 111e of the lock case 111, and is connected inside the lock case 111 by a second connecting member 130b that is inserted through both the second connecting hole 121f and the first arc groove 111e.

[0111] The upper end of the first link member 122 is superimposed on the front side of the second link member 123 such that the upper hole 122a of the first link communicates with the lower hole 123b of the second link. The two superimposed members are superimposed such that the upper hole 122a of the first link and the lower hole 123b of the second link communicate with the second arc groove 111f of the lock case 111, and are connected inside the lock case 111 by a third connector 130c.

[0112] The upper end of the second link member 123 is positioned between the third link 124, which is located on the front side, and the operating plate 127, which is located on the rear side. The two members are stacked so that the upper hole 123a of the second link, the hole 124a of the third link, the insertion hole 127d, and the second vertical guide groove 111g of the lock case 111 are in communication, and are connected inside the lock case 111 by a fourth connector 130d.

[0113] Furthermore, the movable body 114c of the operating device 114, which will be described later, is connected to the fourth connector 130d, and the third link member 124 is configured to operate in conjunction with the sliding operation of the movable body 114c.

[0114] The third link member 124 has a locking projection 124b at its lower end that engages with the elongated hole 125c of the slide body 125, and a guide projection 124c that slides through the notched elongated hole 112m of the lock cover 112.

[0115] A trigger member 128 is positioned on the door edge side of the operating plate 127, and with the trigger projection 128a protruding outward from the mounting plate 113, the first locking portion 127b of the operating plate 127 is locked to the trigger-side locking portion 128b of the trigger member 128.

[0116] A lock cover 112 is attached to the front side of the lock case 111, which houses the aforementioned components. On the lock cover 112, a lid-side lid-shaped guide groove 112d, a lid-side first arc groove 112e, a lid-side second arc groove 112f, and a lid-side second vertical guide groove 112g are provided at positions opposite to the lid-side lid-shaped guide groove 111d, first arc groove 111e, second arc groove 111f, and second vertical guide groove 111g of the lock case 111, respectively.

[0117] The shaft portion of the first connector 130a is locked into the L-shaped guide groove 112d on the lid side, the shaft portion of the second connector 130b is locked into the first arc groove 112e on the lid side, the shaft portion of the third connector 130c is locked into the second arc groove 112f on the lid side, and the shaft portion of the fourth connector 130d is locked into the second vertical guide groove 112g on the lid side.

[0118] The lock cover 112 is provided with a spring-loaded pin 111b and a trigger member support projection 111c, as well as a first locking hole 112b, a second locking hole 112c, a third locking hole 112h, a fourth locking hole 112i, and a fifth locking hole 112j, which are holes into which regulating pins 111h, 111i, and 111j protruding from the inside of the lock case 111 engage. In addition, the upper and lower edges of the lock cover 112 are provided with positioning recesses 112k, and the edge on the door-end side is provided with a notched elongated hole 112m.

[0119] The operating unit 114 comprises a base portion 114a fixed to the door D and a movable body 114c that can slide vertically within a recess 114b of the base portion 114a. Two positioning protrusions 114d are provided on the back side of the base portion 114a, spaced apart in the vertical direction.

[0120] The base portion 114a is positioned so that its two positioning protrusions 114d fit into the positioning recesses 111k of the lock case 111 and the positioning recesses 112k of the lock cover 112, and is then fixed to the door D.

[0121] With the lock 100 configured as described above, when the operating part 114 is lowered in the locking direction (downward) in the state shown in Figure 14(a), the end of the third link member 124 on the side of the locking projection 124b is pulled up, and as this movement occurs, the operating plate 127 and the upper hole 123a side of the second link of the second link member 123 are pushed down.

[0122] When the upper hole 123a side of the second link member 123 is pushed down, the first link member 122 connected to the second link member 123 slides to the left in the figure, and as it moves, the hook member 121 passes through the hook member passage hole 113b of the front plate 113 and fits into the fitting hole of a strike (not shown), and the door D is locked.

[0123] At this time, as the end of the third link member 124 on the side of the locking projection 124b is pulled up, the slide body 125 is pushed up, and the motion transmission unit 30 that is in contact with the slide body 125 is pushed up.

[0124] On the other hand, when the operating unit 114 is raised in the unlocking direction (upward) in the state shown in Figure 14(b), the end of the third link member 124 on the side of the locking projection 124b is pushed down, and as a result of this movement, the operating plate 127 and the lower hole 123b side of the second link member 123 are pushed up.

[0125] When the lower hole 123b side of the second link member 123 is pushed up, the first link member 122 connected to the second link member 123 slides to the right in the figure, and as a result of this movement, the hook member 121 that was protruding outside the hook member passage hole 113b of the front plate 113 is pulled back into the lock box 111, and the door D is unlocked.

[0126] At this time, as the end of the third link member 124 on the side of the locking projection 124b is pushed down, the slide body 125 is pushed down, and the motion transmission unit 30 that is in contact with the slide body 125 descends.

[0127] The configurations of each embodiment described above are examples only, and the configurations of the motion transmission unit 30, door shutter device, and door D of the present invention are not limited to the configurations of each embodiment described above. The motion transmission unit 30, door shutter device, and door D of the present invention can be modified, such as by omitting, adding, or replacing components, to the extent that the intended purpose can be achieved. [Industrial applicability]

[0128] The motion transmission unit 30 and door shutter device of the present invention can be implemented and used in various types of doors D where it is necessary to switch between opening and closing the gap. [Explanation of symbols]

[0129] 10 tablets 11 Case body 11a Guide pin 11b Spring-hanging projection 11c cam mounting hole 11d Hub mounting hole 12 Case Lid 12a Cover-side guide groove 12b Lid side locking groove 12c Cover-side cam mounting hole 12d Cover-side hub mounting hole 13 Front plate part 13a Bolt entrance 13b Trigger entrance / exit 14 Samtan 14a Mounting shaft 15 Movable Arm 15a Connecting protrusion 15b protrusion 16 Latch bolts 16a Bolt groove 17 Latch biasing spring 18 Guide Frames 18a Notched recess 19 Rotating Hub 19a Insertion hole 19b First locking part 19c Second locking part 19d Third locking part 20 Hub retainer 20a Spring locking projection 20b Side protrusion 21 Hub biasing spring 22 Triggers 22a Trigger body 22b Head 23 Guide Plate 23a Guide hole 23b Buttock protrusion 24 Trigger biasing spring 25 Rotating Cam 25a Insertion hole 25b Cylindrical section 25c Block section 25d protrusion 25e First protrusion 25f second protrusion 26 Cam biasing spring 27 Interlocking Plate 27a First Regulatory Department 27b Second Regulatory Department 28 links 28a First through hole 28b Second through hole 29 Mounting plate 29a Latch entrance 29b Trigger entrance / exit 30. Motion transmission unit 31 Mounting bracket 31a Stay body 31b Stay cap 31c Elastic body arrangement section 31d protrusion 31e First locking pin 32 joints 32a Arm housing 32b Projection fitting section 32c Elastic body housing 32d Inner Rail 32e Opposing piece 32f Opposing piece 32g Second locking pin 33 Auxiliary elastic body 34 Rod Bar 35 Foot member 35a Connecting shaft housing 35b Inner rail for leg components 36 connecting pins 37 Connecting shaft 37a Insertion part 37b Removal guard 38 Connecting pins 39 Principal elastic body 40 Fixing member 50 Shielding Units 51 Shutter body 51a Sealing material compartment 51b Storage groove 52 Sealant 53 Oscillating body 53a Projecting piece 53b Locking protrusion 53c Support pin insertion hole 54 Shutter Guide 54a Screw hole 54b Cylindrical part 54c Guide slot 54d Guide section 55 Shutter Case 55a Opposing surface 55b Opposing surface 55c First insertion hole on the first surface 55d Second surface, first insertion hole 55e First surface, second insertion hole 55f Second surface, second insertion hole 55g passage opening 55h ring material 56 Shutter cap 56a Fixed part 57. Support pin for the oscillating body 58 Guide support pins 100 tablets 111 Lockbox 111a First longitudinal guide groove 111b Spring-loaded pin 111c Trigger member support projection 111d L-shaped guide groove 111e First circular groove 111f Second circular arc groove 111g Second longitudinal guide groove 111h Regulatory pin 111i Regulator pin 111j Regulator pin 111k positioning recess 112 Lock cover 112b First locking hole 112c Second locking hole 112d L-shaped guide groove on the lid side 112e Cover side first circular groove 112f Cover side second arc groove 112g Second vertical guide groove on the lid side 112h Third locking hole 112i Fourth locking hole 112j Fifth locking hole 112k positioning recess 112m Notched elongated hole 113 Front plate part 113a Trigger pass-through hole 113b Sickle member passage hole 114 Operation section 114a Base section 114b recess 114c Movable body 114d Positioning projection 121 Sickle component 121a Body part 121b Locking arm section 121c Lower end side connection part 121d Middle connection section 121e First connecting hole 121f Second connection hole 122 First link member 122a Upper hole of the first link 122b Lower hole of the first link 123 Second link member 123a Upper hole of the second link 123b Lower hole of the second link 124 Third link member 124a Third link hole 124b Locking protrusion 124c Guide projection 125 slide body 125a Base section 125b Arm section 125c horizontally elongated hole 126 Torsion spring 127 Operation board 127a Base part 127b First locking part 127c Top piece 127d Through hole 127e Spring-hanging protrusion 128 Trigger Member 128a Trigger projection 128b Trigger-side locking part 128c long hole 129 Trigger spring 130a First connector 130b Second connector 130c Third connector 130d Fourth connector Door D F door frame H Door Handle

Claims

1. A motion transmission unit comprising a mounting stay, a joint slidably provided on the mounting stay, a foot member slidably provided on the mounting stay, a rod bar provided between the joint and the foot member, and a main elastic body that is extendable and retractable in the longitudinal direction of the rod bar, The joint is equipped with an auxiliary elastic body that can bias it in the unlocking direction, The auxiliary elastic body is provided at a position that straddles the mounting stay and the joint. A motion transmission unit characterized by the following features.

2. In the motion transmission unit according to claim 1, The auxiliary elastic body can bias the joint in the locking direction when the door is locked. A motion transmission unit characterized by the following features.

3. In the motion transmission unit according to claim 1, A torsion spring is provided as an auxiliary elastic element. A motion transmission unit characterized by the following features.

4. A door shutter device comprising a lock, a motion transmission unit, and a shielding unit, wherein the rotational motion of the lock is transmitted to the shielding unit via the motion transmission unit, thereby shielding the gap that occurs around the door with the shielding unit, The motion transmission unit is the motion transmission unit according to any one of claims 1 to 3. A door shutter device characterized by the following features.

5. In a door equipped with a door shutter device that seals the gaps that occur around the door, The door shutter device is the door shutter device described in claim 4. A door characterized by the following features.

Images