Door device

Abstract

A single door device can accommodate both left-handed and right-handed doors, while maintaining the same door handle operation whether installed on a left-handed or right-handed door. [Solution] The system includes a handle interlocking mechanism that converts the input rotation from a door handle 104, which is rotated around a front-to-back axis, into a predetermined motion of a driven mechanism's latch mechanism 20 and an opening force reduction mechanism 30, and a case 40 that holds the handle interlocking mechanism. When installed on a left-handed door 100, the direction of input rotation when viewed from the front is set to be opposite to the direction of input rotation when installed on a right-handed door. The handle interlocking mechanism includes an input conversion mechanism 10 that is provided to convert the input rotation in the case of a left-handed door and the input rotation in the case of a right-handed door into the same motion of the driven mechanism's latch mechanism 20 and opening force reduction mechanism 30, respectively.

Description

Technical Field

[0001] The present invention relates to a door device that holds a required mechanism linked to a door handle in a case when opening the door and can select the posture of the case installed on the door according to the left / right-handed difference of the door.

Background Art

[0002] A door supported by a hinge in a house or the like is maintained in a closed state with respect to a door frame by a required closing means such as a latch mechanism held in a case installed on the door. When opening the door, stand in front of the door on the outdoor side or the indoor side with respect to the door and manually move the door handle. The movement of the door handle is transmitted into the case, and a required driven mechanism is linked by a handle linkage mechanism held in the case so that the door can be opened with respect to the door frame. There are left-handed doors installed on the left side with respect to the door frame and right-handed doors installed on the right side. That is, when viewed from the side where the door opens forward, the left-handed door has the left side as the hanging side, and conversely, the right-handed door has the right side as the hanging side. Conventionally, door devices that can be compatible with both left-handed and right-handed doors have been proposed.

[0003] For example, the door device disclosed in Patent Document 1 is applicable when a push-pull handle that rotates around a vertical axis is used as the door handle. As a driven mechanism, it has a latch mechanism for temporarily fastening the door and an opening force reduction mechanism for kicking the door out with respect to the door frame. The operating piece of the push handle and the operating piece of the pull handle are respectively inserted into the case. The handle linkage mechanism is configured to convert the left-right swing of the operating piece into a predetermined movement of the latch mechanism or the opening force reduction mechanism. When installing the door device disclosed in Patent Document 1 on doors with different left / right-handedness, the case is inverted vertically and installed on the door, and the strike, which is a receiving member on the frame side, is also inverted vertically and installed. Thus, the latch mechanism and the opening force reduction mechanism are arranged in an effective orientation with respect to the door frame (the orientation in which the latch body can engage with the strike portion of the door frame, and the orientation in which the opening force reduction mechanism kicks the door frame), and a single specification of door device can be compatible with the left / right-handed difference of the door.

[0004] On the other hand, in the case of door devices applied to door handles that are rotated around an axis in the front-to-back direction (a direction perpendicular to the door surface on the exterior or interior side), such as lever handles and knobs, the shaft portion of the door handle, such as a square spindle, is connected to a handle cam such as a hub of a handle interlocking mechanism (for example, Patent Documents 2 and 3).

[0005] The door device disclosed in Patent Document 2 assumes that the device can accommodate doors with different left and right-handed orientations simply by inverting the case. In this case as well, when installing the device on doors with different left and right-handed orientations, the case can be inverted and installed on the door to position the latch mechanism and other components in an effective orientation relative to the door frame, making it possible to accommodate doors with different left and right-handed orientations with a single specification of door device. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2021-75892 [Patent Document 2] Publication number 03-49020 [Patent Document 3] Publication number 03-18607 [Overview of the project] [Problems that the invention aims to solve]

[0007] However, with a door device like the one described in Patent Document 2, if the door is either left-handed or right-handed, the door handle is turned in one direction when viewed from the front to open the door, and if it is the other-handed door, the door handle is turned in the opposite direction when viewed from the front to open the door. This inability to perform the same operation as a left-handed or right-handed door, where the direction in which the door handle is turned around the front-to-back axis is reversed, is undesirable. For example, if a lever handle is connected as the door handle to the handle interlocking mechanism of the door device disclosed in Patent Document 2, when the door device is installed on a right-handed door, the operation to open the door involves pushing down on the right side of the lever tip of the door handle and turning it, and when installed on a left-handed door, the operation involves pushing up on the left side of the lever tip of the door handle and turning it. Since the operation to open a typical lever handle involves pushing down on the lever tip, installing the door device on a left-handed door will result in an unnatural feel to the operation of the door handle.

[0008] On the other hand, instead of using a single door device specification to accommodate both left-handed and right-handed doors, it would be possible to avoid the aforementioned problem of incongruity by providing separate devices for left-handed and right-handed doors. However, this would necessitate the preparation of different parts and manufacturing processes for the left-handed and right-handed versions. Furthermore, the strike plates on the frame side, which are installed in conjunction with the door device itself, would also need to be prepared to accommodate the left-handed and right-handed versions. This would also increase costs in terms of molds, processes, and management. Moreover, from the perspective of a user ordering a door device with two specifications to choose from, there is a concern that they may mistakenly choose the specifications of the door device they are ordering for the correct left-handed or right-handed version of the door on which they intend to install it.

[0009] In light of the above background, the problem that this invention aims to solve is to provide a door device that can accommodate both left-handed and right-handed doors with a single specification, while ensuring that the operation of the door handle is the same whether it is installed on a left-handed door or a right-handed door. [Means for solving the problem]

[0010] To achieve the above objectives, this invention adopts a door device configuration 1 comprising: a handle interlocking mechanism that converts input rotation from a door handle rotated around a front-rear axis into a predetermined motion of a driven mechanism; and a case that holds the handle interlocking mechanism, the door device being installed on the door in an inverted position depending on whether the door is left-handed or right-handed, and the rotation axis of the door handle being connected to the handle interlocking mechanism, wherein the direction of the input rotation when viewed from the front when installed on a left-handed door and the direction of the input rotation when viewed from the front when installed on a right-handed door are set to be opposite rotation directions, and the handle interlocking mechanism includes an input conversion mechanism that is provided to convert the input rotation in the left-handed case and the input rotation in the right-handed case into the same motion for the driven mechanism, respectively.

[0011] According to the above configuration 1, when the case is installed on a left-handed door and the handle interlocking mechanism is connected to the door handle, the operating direction around the front-to-back axis of the door handle (direction of input rotation) is inversely related to when the case is installed on a right-handed door in an inverted position compared to the left-handed case and the handle interlocking mechanism is connected to the door handle. Therefore, it is possible to make the operability of the door handle the same whether it is installed on a left-handed or right-handed door. The input rotation in the case of left-handed doors and the input rotation in the case of right-handed doors are both converted into the same motion for the driven mechanism by the input conversion mechanism, so it is possible to make the driven mechanism perform a predetermined motion. In other words, it is possible to accommodate the difference between left-handed and right-handed doors with a single specification of handle interlocking mechanism. Therefore, even with a single-specification door device, the case can be installed on the door in an inverted position according to whether the door is left-handed or right-handed. By connecting the rotation axis of the door handle to the handle interlocking mechanism, it is possible to accommodate the left-handed or right-handed operation of the door, and the operation of the door handle can be made the same whether it is installed on a left-handed or right-handed door.

[0012] In the above configuration 1, a configuration 2 can be adopted in which the input conversion mechanism has a first handle cam and a second handle cam that are selectively connected to the rotation axis of the door handle, the rotation center of the first handle cam and the rotation center of the second handle cam are arranged on the same plane along the vertical and horizontal directions, and the first handle cam and the second handle cam have a linkage reversal mechanism that links together so that they rotate in opposite directions.

[0013] According to the above configuration 2, the installation position of the case is selected according to the left-hand or right-hand opening of the door, and the corresponding first handle cam or second handle cam is connected to the rotation axis of the door handle. In either case, the first handle cam and the second handle cam can be rotated in opposite directions by the linkage reversal mechanism, so that the left-hand opening operation direction and the right-hand opening operation direction are set to opposite rotation directions, and both handle cams can be made to move in the same direction relative to the driven mechanism in either the left-hand or right-hand opening case.

[0014] In the above configuration 1 or 2, configuration 3 can be adopted, in which the driven mechanism includes at least one of a latch mechanism for temporarily closing the door and an opening force reduction mechanism for kicking the door against the door frame. [Effects of the Invention]

[0015] As described above, by adopting the above configuration 1, this invention makes it possible to accommodate both left-handed and right-handed doors with a single door device specification, while ensuring that the operation of the door handle is the same whether it is installed on a left-handed door or a right-handed door. [Brief explanation of the drawing]

[0016] [Figure 1] This is a front view showing an overview of the inside of the case when the door device according to the first embodiment of this invention is installed on a left-handed door, as viewed from the front. [Figure 2] Right side view of the state shown in Figure 1. [Figure 3]Front view showing the state when the door handle is operated from the state of FIG. 1, similar to FIG. 1 [Figure 4] Right side view of the state of FIG. 3 [Figure 5] Front view showing an overview when looking at the inside of the case from the front when the door device according to the first embodiment is installed on a right-handed door [Figure 6] Left side view of the state of FIG. 5 [Figure 7] Front view showing the state when the door handle is operated from the state of FIG. 5, similar to FIG. 5 [Figure 8] Left side view of the state of FIG. 7 [Figure 9] Front view showing an overview when looking at the inside of the case from the front when the door device according to a modified example of the first embodiment is installed on a right-handed door [Figure 10] Front view showing the state when the door handle is operated from the state of FIG. 9, similar to FIG. 9 [Figure 11] Front view showing an overview when looking at the inside of the case from the front when the door device according to the second embodiment of this invention is installed on a left-handed door [Figure 12] Front view showing the state when the door handle is operated from the state of FIG. 11, similar to FIG. 11 [Figure 13] Front view showing an overview when looking at the inside of the case from the front when the door device according to the second embodiment is installed on a right-handed door [Figure 14] Front view showing the state when the door handle is operated from the state of FIG. 13, similar to FIG. 13

Mode for Carrying Out the Invention

[0017] The door device according to the first embodiment as an example of this invention will be described based on FIGS. 1 to 8 of the accompanying drawings.

[0018] The door device according to the first embodiment (hereinafter referred to as "this door device") is configured as an engraved padlock installed between the outdoor door panel 102 and the indoor door panel 103 from the small end surface 101 on the door tip side of the door 100, as shown in FIGS. 1 and 2. <00001

[0019] Door 100 opens and closes around its vertical axis. The door handle 104, located on the exterior side of door 100, is a lever handle that rotates around its front-to-back axis.

[0020] Here, the front-to-back direction refers to the direction when viewing the exterior door panel 102 or interior door panel 103 of door 100 from the front, with the near side being the front and the far side being the rear. The up-and-down direction refers to the direction perpendicular to the horizontal direction. The left-to-right direction refers to the horizontal direction when viewing the exterior door panel 102 or interior door panel 103 of door 100 from the front. One side of door 100 is the hinge side, and the other side is the door edge side.

[0021] In the following, the left-right orientation of door 100 is classified based on the perspective of standing on the outside of door 100 and viewing door 100 from the front. The front-back and left-right directions relative to door 100 refer to the direction when viewing door 100 from the outside according to this standard.

[0022] Figures 1 to 4 show the case where this door device is installed on a left-handed door 100.

[0023] The left-handed door 100 is an outward-opening door that opens outwards (towards the front and left) relative to the door frame 110. The hinge side of door 100 is on the left side of door 100, and the leading edge side of door 100 is on the right side of door 100.

[0024] The lever tip of the door handle 104 faces to the left. The door handle 104 has a structure that connects the handle body, which is grasped by the palm during operation, to a rotation axis (not shown) that serves as the center of rotation around its front-to-back axis. This rotation axis is generally composed of a square core. The door handle (not shown) located on the interior side of the door 100 is connected to the exterior door handle 104 via the aforementioned rotation axis so that it can rotate together with it.

[0025] This door device includes a handle interlocking mechanism that converts the input rotation from the door handle 104 into a constant motion using an input conversion mechanism 10, and converts the constant motion into a predetermined motion of a driven mechanism consisting of a latch mechanism 20 and an opening force reduction mechanism 30, and a case 40 that holds this handle interlocking mechanism.

[0026] The case 40 has a box body 41 which is divided into front and rear sections, and a front panel 42 which is screwed to the door-side wall of the box body 41. The front panel 42 is located on the door-side end face 101 of the door 100 and sandwiches the door-side door panel between it and the box body 41.

[0027] The input conversion mechanism 10 shown in Figure 1 includes a first handle cam 11 and a second handle cam 12 that are selectively connected to the rotation axis of the door handle 104, and return springs 13 and 14 that bias the first handle cam 11 and the second handle cam 12 relative to the case 40.

[0028] Each handle cam 11 and 12 has a square spindle hole that penetrates in the front-to-back direction. By inserting the rotation shaft of the door handle 104 corresponding to the square spindle hole of either the first handle cam 11 or the second handle cam 12, the handle cam 11 or the handle cam 12 and the rotation shaft of the door handle 104 are connected in a way that allows them to rotate integrally. In this door device, the first handle cam 11 is set for left-handed doors, and the second handle cam 12 is set for right-handed doors. Since the door 100 in Figure 1 is left-handed, the rotation shaft of the door handle 104 is connected to the first handle cam 11.

[0029] The rotation centers of each handle cam 11 and 12 are located on the same plane S1 along the vertical and longitudinal directions. The two handle cams 11 and 12 have a linked reversal mechanism that allows them to rotate in opposite directions. The linked reversal mechanism shown in the figure is composed of gears 11a and 12a that mesh with each other. The gears 11a of the first handle cam 11 and 12a of the second handle cam 12 are arranged symmetrically vertically. The two gears 11a and 12a have symmetrical tooth arrangements with respect to a plane of symmetry S2 along the left-right and longitudinal directions. The plane of symmetry S2 is located tangent to the meshing pitch circles of the two gears 11a and 12a.

[0030] When the door 100 is in the closed position with the door temporarily fastened, the door handle 104 and both handle cams 11 and 12 are in standby mode at a predetermined phase as shown in Figure 1. From this standby state, when the door handle 104 on the outside is rotated counterclockwise in direction A1, the first handle cam 11 is rotated counterclockwise in direction A2, and the second handle cam 12 is rotated clockwise in direction A3. The return springs 13 and 14 bias both handle cams 11 and 12, which are rotated from the standby state, in a rotational direction that returns them to the predetermined phase.

[0031] The latch mechanism 20 is a mechanism for temporarily closing the door 100. The opening force reduction mechanism 30 is a mechanism for kicking the door 100 forward (outside) relative to the door frame 110.

[0032] The latch mechanism 20 in the illustrated example is of the reversible latch type. The latch body 21 is arranged to be reversible around the vertical axis. Reversal of the latch body 21 is restricted by a pair of lock arms 22a and 22b. The pair of lock arms 22a and 22b are arranged to swing between a locked position that restricts the reversal of the latch body 21 (see Figure 1) and a retracted position that allows reversal (see Figure 3). When the pair of lock arms 22a and 22b (see Figure 1) are in the locked position, the latch body 21 is in a restricted state in which it can engage with the strike portion (not shown) of the door frame toward the front, so the latch mechanism 20 is in a temporarily closed state that does not allow the door 100 to open toward the front. When the pair of locking arms 22a and 22b (see Figure 3) are in the retracted position, the latch body 21 reverses when it hits the strike portion (not shown) of the door frame, and is in a release state where it can escape from the strike portion. As a result, the latch mechanism 20 is in an unlocked state that allows the door 100 to be opened forward, and the door 100 can be opened forward.

[0033] The pair of locking arms 22a and 22b are connected by a paired pin 22c at their pivoting ends furthest from the latch body 21. Each locking arm 22a and 22b can pivot around a longitudinal axis about corresponding pivot axes 23a and 23b fixed to the box body 41. When in standby mode, the pair of locking arms 22a and 22b are in a locked position, each inserted into either the upper or lower recess of the latch body 21.

[0034] The oscillation of the pair of lock arms 22a and 22b is synchronized by torque transmission between the lock arms 22a and 22b via a paired pin 22c. One of the lock arms 22a is oscillated by torque supplied from a link member 24. The link member 24 can oscillate around a front-rear axis about a pivot shaft 25 fixed to the box body 41. The link member 24 is oscillated about the pivot shaft 25 by torque supplied from a slide shaft 11b protruding from the first handle cam 11. The slide shaft 24a protruding from the link member 24 pushes the tapered cam surface 22d of one of the lock arms 22a, causing one of the lock arms 22a to rotate about the pivot shaft 23a from the locked position to the retracted position.

[0035] When the door is opened, the lever tip side (left side) of the door handle 104 is pushed down from its standby position, causing the door handle 104 to rotate counterclockwise (in the direction indicated by arrow A1). As a result, the first handle cam 11, which is connected to it coaxially, is also rotated counterclockwise (in the direction indicated by arrow A2), causing the link member 24 to rotate counterclockwise (in the direction indicated by arrow C1) around the pivot axis 25. The slide shaft 24a of the link member 24 pushes the tapered cam surface 22d of the opposing lock arm 22a, causing the opposing lock arm 22a to rotate clockwise (in the direction indicated by arrow C2) around the pivot axis 23a from the locked position to the retracted position. This rotation applies torque to the opposing lock arm 22b via the paired pin 22c, causing the opposing lock arm 22b to rotate counterclockwise (in the direction indicated by arrow C3) around the pivot axis 23b from the locked position to the retracted position. Furthermore, spring members are also provided to bias both lock arms 22a and 22b in the direction that returns them to the locked position.

[0036] The illustrated opening force reduction mechanism 30 is a mechanism that adapts the opening force reduction device disclosed in Japanese Patent Application Publication No. 2024-57581, and has a receiving cam 31 (see Figures 2 and 4) which includes a kicking portion 31a that presses against a receiving portion 110a provided in the strike portion of the door frame 110 and kicks the door frame 110 toward the rear. The receiving cam 31 is rotatably positioned relative to the case 40 with respect to a cam shaft 33 that passes in the left-right direction between the stay 32 provided on the box body 41 and the receiving cam 31. When in standby mode, the kicking portion 31a of the receiving cam 31 protrudes to the right from the opening of the front panel 42 and is located in front of the door frame 110 (see Figure 2).

[0037] The receiving cam 31 (see Figure 1) is connected to the lifting member 35 via a pivot shaft 34. The pivot shaft 34 passes through the receiving cam 31 and the lifting member 35 in the left-right direction from one end in the vertical direction. A swinging member 36 is connected to the other end in the vertical direction of the lifting member 35. The swinging member 36 can swing around a front-rear axis about a swing shaft 37 fixed to the box body 41. The swinging member 36 is made to swing around the swing shaft 37 by torque supplied from a slide shaft 12b protruding from the second handle cam 12. The slide shaft 36a protruding from the swinging member 36 swings up and down and pushes the lifting member 35, causing the lifting member 35 to move up and down. As the lifting member 35 moves up and down, torque is supplied to the receiving cam 31 in the direction of the cam shaft 33 via the pivot shaft 34, causing the receiving cam 31 to rotate around the cam shaft 33.

[0038] When the door is opened, the door handle 104 is rotated counterclockwise (see arrow A1) from its standby position, causing the first handle cam 11, which is connected to it coaxially, to also rotate counterclockwise (see arrow A2). The second handle cam 12, which meshes with the second handle cam 12 to rotate in the opposite direction, is rotated clockwise (in the direction shown by arrow A3). Torque is then applied to the oscillating member 36 from the slide shaft 12b of the second handle cam 12, causing the oscillating member 36 to... The pivot shaft 37 rotates counterclockwise (in the direction indicated by arrow B1), and the lifting member 35 is pushed upward (in the direction indicated by arrow B2) from the slide shaft 36a of the pivot member 36, causing the lifting member 35 to rise. This rise applies torque to the receiving cam 31 in the direction of the cam shaft 33 via the pivot shaft 34, causing the receiving cam 31 to rotate backward (see Figure 2: in the direction indicated by arrow B3) around the cam shaft 33. As a result, the kick portion 31a of the receiving cam 31 presses against the receiving portion 110a of the door frame 110, kicking the door frame 110 (see Figure 4) backward, kicking the door 100 forward relative to the door frame 110, creating a ventilation gap between the door edge of the door 100 and the door frame 110, eliminating the pressure difference between the inside and outside, and reducing the force required to open the door 100. Furthermore, the predetermined movements of the latch mechanism 20 and the opening force reduction mechanism 30 are set so that the kicking part 31a kicks the door 100 after the pair of locking arms 22a and 22b have moved to their retracted positions.

[0039] Figures 5 to 8 show the case where this door device is installed on a right-handed door 100.

[0040] The right-handed door 100 is an outward-opening door that opens outwards (towards the front and to the right) relative to the door frame 110. The hinge side of door 100 is on the right side of door 100, and the leading edge side of door 100 is on the left side of door 100.

[0041] Case 40 is installed on the door 100 in an inverted position compared to the case in Figure 1, and its front panel 42 is positioned on the left edge of the door 100. This ensures that the latch mechanism 20 and the opening force reduction mechanism 30, which belong to the driven mechanism of the handle interlocking mechanism, are positioned in an effective orientation in the front-rear direction, that is, the latch body 21 is positioned so that it can engage with the strike portion of the door frame 110 toward the front, and the kick portion 31a of the receiving cam 31 is positioned so that it can kick the door frame 110 toward the rear.

[0042] As shown in Figures 5 and 7, the lever tip of the door handle 104 faces to the right. The rotation axis of the door handle 104 is connected to the second handle cam 12.

[0043] When the door is opened, the lever tip (right side) of the door handle 104 is pushed down from its standby position, causing the door handle 104 to rotate clockwise (in the direction indicated by arrow A11). This causes the second handle cam 12, which is connected to it coaxially, to rotate clockwise (in the direction indicated by arrow A13). Consequently, the first handle cam 11, which meshes with the second handle cam 12 to rotate in the opposite direction, is rotated counterclockwise (in the direction indicated by arrow A12).

[0044] In other words, when the left-handed door 100 shown in Figure 1 is viewed from the front, the direction of input rotation from the door handle 104 to the handle interlocking mechanism is defined as the left-handed operating direction, and when the right-handed door 100 shown in Figure 5 is viewed from the front, the direction of input rotation to the handle interlocking mechanism is defined as the right-handed operating direction. In this case, the left-handed operating direction is counterclockwise (see arrow A1 in Figure 1), and the right-handed operating direction is clockwise (see arrow A11 in Figure 5). Since both (arrow A1 direction and arrow A11 direction) are set as opposing directions of rotation, they are symmetrical. Therefore, in both the left-handed and right-handed cases, the door can be opened by pushing down the lever tip of the door handle 104 and rotating it from the standby state, thus providing the same operability. In particular, with a lever handle, there is the advantage that the operation of pushing up the lever tip of the door handle 104 in either the left-handed or right-handed case does not become an awkward operation. Nevertheless, in both left-handed and right-handed cases (see Figures 1 and 5), the second handle cam 12 performs the same motion (clockwise rotations A3 and A13) relative to the driven mechanism's opening force reduction mechanism 30, and the first handle cam 11 performs the same motion (counterclockwise rotations A2 and A12) relative to the driven mechanism's latch mechanism 20. As a result, the driven mechanism, consisting of the latch mechanism 20 and the opening force reduction mechanism 30, is made to perform the same predetermined motion in both cases (allowing the latch body 21, receiving cam 31, etc., to function normally).

[0045] As described above, this door device comprises a handle interlocking mechanism that converts the input rotation from the door handle 104, which is rotated around a front-to-back axis, into a predetermined motion of a driven mechanism (latch mechanism 20, opening force reduction mechanism 30), and a case 40 that holds the handle interlocking mechanism. The case 40 is installed on the door 100 in an inverted position depending on whether the door 100 is left-to-right or right-to-left, and the rotation axis of the door handle 104 is connected to the handle interlocking mechanism.

[0046] This door device is configured such that, when installed on a left-handed door 100 (see Figure 1), the direction of input rotation as viewed from the front (see arrows A1 and A2 in Figure 1) and when installed on a right-handed door 100 (see Figure 5), the direction of input rotation as viewed from the front (see arrows A11 and A13 in Figure 5) are set to be opposite directions of rotation. The handle interlocking mechanism includes an input conversion mechanism 10 that is capable of converting the input rotation for left-handed doors (see arrows A1 and A2 in Figure 1) and the input rotation for right-handed doors (see arrows A11 and A13 in Figure 5) into the same motion for the driven mechanisms (latch mechanism 20, opening force reduction mechanism 30), respectively. When case 40 is installed on a left-handed door 100 (see Figure 1) and the handle interlocking mechanism (input conversion mechanism 10) is connected to the rotation axis of the door handle 104 (see arrow A1), the relationship between this and the operation direction of the door handle 104 around the front-rear axis when case 40 is installed on a right-handed door 100 (see Figure 5) in an inverted position compared to the left-handed case and the handle interlocking mechanism (input conversion mechanism 10) is connected to the rotation axis of the door handle 104 (see arrow A11) is symmetrical. Therefore, it is possible to make the operability of the door handle 104 the same whether it is installed on a left-handed door 100 (see Figure 1) or a right-handed door 100 (see Figure 5). Furthermore, the input rotation for left-handed operation (see arrows A1 and A2 in Figure 1) and the input rotation for right-handed operation (see arrows A11 and A13 in Figure 5) are both converted by the input conversion mechanism 10 into the same motion for the driven mechanism (latch mechanism 20, opening force reduction mechanism 30). Therefore, it is possible to make the driven mechanism (latch mechanism 20, opening force reduction mechanism 30) perform the same predetermined motion in both left-handed and right-handed operation.

[0047] Thus, this door device (see Figures 1 and 5), similar to the push-pull handle type door device exemplified in Patent Document 1, etc., can accommodate left-handed and right-handed doors by installing the case 40 upside down on the door 100 according to the left-handedness of the door 100, and by connecting the rotation axis of the door handle 104 to the input conversion mechanism 10 of the handle interlocking mechanism. Furthermore, the operability of the door handle 104 can be made the same whether it is installed on a left-handed or right-handed door 100. In addition, not only the door device body but also the strike plate on the frame side can accommodate left-handed and right-handed doors by installing it on the frame in an upside-down position, even if it is a single specification.

[0048] Furthermore, this door device has a first handle cam 11 and a second handle cam 12 that are selectively connected to the rotation axis of the door handle 104 by the input conversion mechanism 10, the rotation centers of the first handle cam 11 and the rotation centers of the second handle cam 12 are arranged on the same plane S1 along the vertical and horizontal directions, and the first handle cam 11 and the second handle cam 12 have a linkage reversal mechanism (gear section 11a, 12a) that links them to rotate in opposite directions (see arrows A2 and A3 in Figure 1), thereby selecting the installation position of the case 40 according to the left-right orientation of the door 100 (see Figures 1 and 5), and the corresponding first handle cam 11 or second The second handle cam 12 is connected to the rotation axis of the door handle 104. In either case, the first handle cam 11 and the second handle cam 12 can be rotated in opposite directions (see arrows A2 and A3 in Figure 1, and arrows A13 and A12 in Figure 5) by the linkage reversal mechanism (gear sections 11a and 12a). This allows the left-handed operation direction (see arrows A1 and A2 in Figure 1) and the right-handed operation direction (see arrows A11 and A13 in Figure 5) to be set in opposite rotation directions, and in either the left-handed or right-handed operation, both handle cams 11 and 12 of the input conversion mechanism 10 can be made to move in the same direction relative to the driven mechanism (latch mechanism 20, opening force reduction mechanism 30).

[0049] Furthermore, since the interlocking reversal mechanism of this door device is composed of the gear section 11a of the first handle cam 11 and the gear section 12a of the second handle cam 12, a simple input conversion structure can be achieved. It is desirable that the gear sections 11a and 12a that mesh with each other be arranged symmetrically, but this is not the only option. For example, to ensure that the rotation angle of the door handle 104 when the door is open is 30 degrees, the gear section 11a of the first handle cam 11 and the gear section 12a of the second handle cam 12 may both have the same tooth profile with a pitch circle diameter equivalent to 20 teeth. Alternatively, this can be modified so that the pitch circle diameter of one is equivalent to (20-n) teeth and the pitch circle diameter of the other is equivalent to (20+n) teeth. In this case, the rotation angle required to open the door will differ between right-handed and left-handed operation by ±1.5 × n degrees (= 30 degrees × (±5 × n%)), which is precisely ±5 × n% (= ±100% × n / 20), compared to the case with the same number of teeth. However, if n is a small value, this will not cause any practical problems.

[0050] Furthermore, this door device eliminates the need to modify the specifications of the latch mechanism 20 and opening force reduction mechanism 30, which are included in the driven mechanism held in the case 40. This eliminates the need for specification changes such as replacing parts of the latch mechanism and opening force reduction mechanism or changing the mounting direction of parts to accommodate left-handed and right-handed doors 100 during the manufacturing and construction stages. Also, from the user's perspective, there is no need to choose from two specifications when ordering the door device, thus eliminating construction delays due to ordering errors.

[0051] In the first embodiment described above, a gear section was used as the linkage reversal mechanism that links the first handle cam and the second handle cam to rotate in opposite directions, but this is not the only example. For example, as shown in Figures 9 and 10 as a modified example, a slide groove 111a may be provided on the first handle cam 111, and a slide shaft 112a inserted into the slide groove 111a may be provided on the second handle cam 112, and the first handle cam 111 and the second handle cam 112 may be rotated in opposite directions by torque transmission between the two 111a and 112a due to the engagement of the slide groove 111a and the slide shaft 112a with each other. In this way, the linkage reversal mechanism can be any configuration as long as the first handle cam and the second handle cam are able to rotate in opposite directions.

[0052] The input conversion mechanism provided in the handle interlocking mechanism only needs to be structured such that the left-handed and right-handed operating directions can be set as opposing rotational directions, and the input rotation for the left-handed operating direction and the input rotation for the right-handed operating direction can be converted into the same motion for the driven mechanism. It is also possible to adopt a structure other than the vertically symmetrical structure shown in Figure 1 of the first embodiment. Figures 11 to 14 show a door device according to the second embodiment as an example. Here, we will only describe the differences from the first embodiment, and the same reference numerals will continue to be used for elements other than the input conversion mechanism that are functionally corresponding.

[0053] Figures 11 and 12 show the case where the door device according to the second embodiment is installed on a left-handed door 100, and Figures 13 and 14 show the case where it is installed on a right-handed door 100.

[0054] The input conversion mechanism 50 according to the second embodiment (see Figures 11 and 12) includes a swing body 51 connected coaxially with the rotation axis of the door handle 104, a slider 52 that reciprocates linearly in the vertical direction relative to the swing body 51, and a spring member 53 that biases the slider 52 toward the swing body 51 in the vertical direction.

[0055] The swing body 51 has a handle cam portion 51a in which a square core hole corresponding to the rotation axis of the door handle 104 is formed. When the swing body 51 is in the standby state shown in Figures 11 and 13, it is in the neutral position. As shown in Figures 11 and 12, the swing body 51 is swung counterclockwise (in the direction indicated by arrow D1 in Figure 11) by input rotation in the left-handed operation direction from the door handle 104. As shown in Figures 13 and 14, the swing body 51 is swung clockwise (in the direction indicated by arrow D11 in Figure 13) by input rotation in the right-handed operation direction from the door handle 104.

[0056] The box body 41 (see Figures 11 and 12) has several guide pins 43 fixed to it that guide the slider 52 in the vertical direction. The guide pins 43 are passed through slits formed along the vertical direction of the slider 52.

[0057] The swing body 51 and the slider 52 (see Figures 11 and 13) have engaging portions 51b, 51c, 52a, and 52b that are arranged symmetrically with respect to a plane of symmetry S1 containing the pivot center of the swing body 51 when in the neutral position, and that face each other in the vertical direction.

[0058] The slider 52 has a spring support portion 52c that holds a pair of spring members 53, which are arranged on the left and right sides, between itself and the box body 41. Each spring member 53 is a compression coil spring, and at both its upper and lower ends, it is sandwiched between the spring support portion 52c and the box body 41.

[0059] In the case of a left-handed door 100 (see Figures 11 and 12), depending on the swing angle θ1 to the left from the neutral position of the swing body 51, the left-side engaging portion 51b of the pair of engaging portions 51b and 51c of the swing body 51, which is the swinging tip side in the figure, pushes the left-side engaging portion 52a of the slider 52 in the vertical direction. As a result, the slider 52 is moved in one direction in the vertical direction relative to the case 40 (the direction shown by arrow D2 in Figure 11, which is the downward direction in the figure). The contact between the left-side engaging portion 51b of the swing body 51 and the left-side engaging portion 52a of the slider 52 is maintained by the biasing force exerted by a plurality of spring members 53 (especially the spring member 53 on the left side in the figure).

[0060] In the case of a right-handed door 100 (see Figures 13 and 14), according to the swing angle θ2 to the right from the neutral position of the swing body 51, the left-side engaging portion 51c of the pair of engaging portions 51b and 51c of the swing body 51, which is the swinging tip side in the figure, pushes the left-side engaging portion 52b of the slider 52 in the vertical direction. As a result, the slider 52 is moved in one direction in the vertical direction relative to the case 40 (the direction shown by arrow D2 in Figure 13, which is the upward direction in the figure). The contact between the left-side engaging portion 51c of the swing body 51 and the left-side engaging portion 52b of the slider 52 is maintained by the biasing force exerted by a plurality of spring members 53 (especially the spring member 53 on the left side in the figure).

[0061] In the case of a left-handed door 100 (see Figure 12), the distance L1 from the plane of symmetry S1 at the point where the engaging portion 51b of the swing body 51 and the engaging portion 52a of the slider 52 come into contact is desirable to be equal to the distance L2 from the plane of symmetry S1 at the point where the engaging portion 51c of the swing body 51 and the engaging portion 52b of the slider 52 come into contact in the case of a right-handed door 100 (see Figure 14), but they do not necessarily have to be exactly the same. For example, if the rotation angle θ1 of the door handle 104 when the left-handed door 100 is open is 30 degrees and L2 is 10% larger than L1, then the rotation angle θ2 of the door handle 104 when the right-handed door 100 is open will be 27 degrees, which is 10% smaller, but this does not pose any practical problems.

[0062] The slider 52 has an opposing end 52d that contacts the link member 24 of the latch mechanism 20 in the direction of arrow D2 (see Figures 11 and 13). The opposing end 52d of the slider 52 pushes the link member 24 of the latch mechanism 20 in the direction of arrow D2, thereby applying torque to the link member 24 in the direction of arrow C1 around the pivot axis 25. The latch mechanism 20 has an elastic member 26 for biasing the link member 24 in a direction that maintains contact between the link member 24 and the opposing end 52d of the slider 52. The elastic member 26 is positioned between the box body 41 and the link member 24.

[0063] The slider 52 has a slide shaft 52e protruding in the front-rear direction for applying torque to the oscillating member 36 of the opening force reduction mechanism 30. The slide shaft 52e of the slider 52 pushes the oscillating member 36 in the direction of arrow line D2, thereby applying torque to the oscillating member 36 in the direction of arrow line B1 around the oscillating axis 37.

[0064] The slider 52 has a structure in which a base member having a slide shaft 52e and an opposing end 52d and a plate member having engaging portions 52a, 52b and a spring receiving portion 52c are stacked front to back and integrated.

[0065] The swing body 51 has a pair of protrusions 51e and 51d that are located on the upper and lower opposite sides of the pivot center from the engaging portions 51b and 51c, and are provided symmetrically with respect to the plane of symmetry S1.

[0066] The first projection 51d and the second projection 51e are spaced apart in the direction of the pivot center of the swing body 51, and a pair of mounting holes 41a and 41b are formed in the box body 41 at a position that overlaps with the space between them in the front-rear direction. The first mounting hole 41a and the second mounting hole 41b are provided symmetrically with respect to the plane of symmetry S1. Each mounting hole 41a and 41b penetrates the box body 41 in the front-rear direction and is used to attach a regulating member 60 from the outside of the box body 41. For example, the regulating member 60 is a male screw member, a pin, etc., and each mounting hole 41a and 41b is a female screw hole into which the regulating member 60 is screwed, and a pin hole into which a pin is driven.

[0067] In the case of a left-handed door 100 (see Figures 11 and 12), a restricting member 60 is attached to the first mounting hole 41a. Swinging of the swing body 51 to the left beyond the swing angle θ1 from the neutral position is restricted by the first projection 51d contacting the restricting member 60. Swinging of the swing body 51 to the right from the neutral position is restricted by the second projection 51e contacting the restricting member 60.

[0068] In the case of a right-handed door 100 (see Figures 13 and 14), a regulating member 60 is attached to the second mounting hole 41b. Swinging of the swing body 51 to the right beyond the swing angle θ2 from the neutral position is restricted by the second projection 51e contacting the regulating member 60. Swinging of the swing body 51 to the left from the neutral position is restricted by the first projection 51d contacting the regulating member 60.

[0069] In the door device according to the second embodiment, whether the door 100 is left-handed (see Figures 11 and 12) or right-handed (see Figures 13 and 14), the slider 52 of the input conversion mechanism 50 performs the same motion (linear motion in the direction of arrow line D2) with respect to the latch mechanism 20 and opening force reduction mechanism 30 of the driven mechanism, according to the swing angles θ1 and θ2 of the swing body 51 to the corresponding left and right sides. Therefore, the driven mechanism consisting of the latch mechanism 20 and the opening force reduction mechanism 30 is made to perform a predetermined motion in both cases, just as in the first embodiment (the latch body 21, receiving cam 31, etc., are made to function normally).

[0070] Furthermore, regardless of whether the door is handed or handed, the pair of mounting holes 41a and 41b of the box body 41 can be used to restrict the swing angles θ1 and θ2 of the swing body 51. Therefore, when installing the door device on the door 100, the swing body 51 will not rotate freely around the handle cam portion 51a relative to the case 40, making it easy to connect the rotation axis of the door handle 104 and the handle cam portion 51a in the appropriate phase.

[0071] In the embodiments described above, examples were given in which the driven mechanism has both a latch mechanism and an opening force reduction mechanism. However, it is also possible to configure a door device in which a driven mechanism having only one of the latch mechanism or the opening force reduction mechanism is held in the case.

[0072] Furthermore, while an inverting latch type that inverts the latch body around the vertical axis was given as an example of the latch mechanism of the driven mechanism, it is also possible to employ a latch mechanism that causes the latch body to reciprocate linearly in the left-right direction (see, for example, Patent Document 2). When causing the latch body to reciprocate linearly in the left-right direction, for example, if an input conversion mechanism having two handle cams is adopted as in the first embodiment, a pinion gear part is added to one of the handle cams, and a rack part that reciprocates linearly in the left-right direction is provided in the latch mechanism, and a rack and pinion mechanism is formed with the pinion gear part and the rack part, and the left-right thrust force obtained from the rack part is used to move the latch body in the left-right direction. Alternatively, if an input conversion mechanism having a swing body and a slider is adopted as in the second embodiment, the engagement part of the swing body and the slider is provided symmetrically (up-down symmetrically) with respect to a plane of symmetry along the left-right and front-back directions, and the up-down swing of the swing body around the front-back axis is converted into a left-right reciprocating linear motion of the slider, and the left-right thrust force of the slider is used to move the latch body in the left-right direction.

[0073] Furthermore, when configuring a door device that does not include a latch mechanism in the driven mechanism, means of keeping the door in the closed position include, for example, magnetically attracting the leading edge of the door to the door frame to keep it in the closed position, or keeping it in the closed position by engaging the door handle with the door frame, such as with a cremone handle.

[0074] Furthermore, while the driven mechanism's opening force reduction mechanism was exemplified by one in which a receiving cam rotates around a left-right axis, it is also possible to employ an opening force reduction mechanism configured to kick the door frame with a member that rotates around a vertical axis.

[0075] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. Accordingly, the scope of the invention is indicated by the claims and all modifications within the meaning and scope equivalent to the claims are intended.

[0076] Furthermore, in the door device according to the second embodiment described above, the following supplementary inventions 1 and 2 according to the present invention are disclosed. [Addendum Invention 1] It comprises a handle interlocking mechanism that converts input rotation around the front-rear axis into a predetermined motion of a driven mechanism, and a case that holds the handle interlocking mechanism, In a door device in which the case is installed on the door in an inverted position according to the left-right orientation of the door, and the handle interlocking mechanism is connected to the rotation axis of the door handle which rotates around the front-rear axis, When installed on a left-handed door, the direction of input rotation as viewed from the front is defined as the left-handed operating direction, and when installed on a right-handed door, the direction of input rotation as viewed from the front is defined as the right-handed operating direction. In this case, the left-handed operating direction and the right-handed operating direction are set to be opposite directions of rotation. The handle interlocking mechanism includes an input conversion mechanism that is capable of converting the input rotation in the left-handed operating direction and the input rotation in the right-handed operating direction into the same motion relative to the driven mechanism, The input conversion mechanism comprises a swing body connected to the rotation axis of the door handle, and a slider that moves back and forth linearly relative to the swing body. The aforementioned swing body is arranged to be able to swing around a front-rear axis from a neutral position. The swing body and the slider have engaging portions that face each other in the direction of the reciprocating linear motion of the swing body when in the neutral position. A door device characterized in that, in accordance with the swing angle of the swing body from the neutral position, the engaging portion of the swing body kicks the engaging portion of the slider, thereby causing the slider to reciprocate in a linear motion. [Addendum Invention 2] A restricting member that limits the swing angle of the swing body from the neutral position is attached to the case. The door device according to Appendix Invention 1, wherein the case has a first mounting hole into which the restricting member can be inserted when limiting the swing angle from the neutral position to one side, and a second mounting hole into which the restricting member can be inserted when limiting the swing angle from the neutral position to the other side opposite to the one side. [Explanation of Symbols]

[0077] 10,50 Input conversion mechanism 11, 12, 111, 112 Handle cam 11a, 12a Gear section 20 Latch mechanism 30. Opening force reduction mechanism 40 cases 41a, 41b Mounting hole section 60 Regulatory Member 100 doors 104 Door handle 110 Door frame 111a Slide groove 112a Slide shaft

Claims

1. It comprises a handle interlocking mechanism that converts input rotation from a door handle rotated around a front-to-back axis into a predetermined motion of a driven mechanism, and a case that holds the handle interlocking mechanism, In a door device in which the case is installed on the door in an inverted position according to the difference in the left-right orientation of the door, and the rotation axis of the door handle is connected to the handle interlocking mechanism, When installed on a left-handed door, the direction of input rotation as viewed from the front is set to be opposite to the direction of input rotation as viewed from the front when installed on a right-handed door. A door device characterized in that the handle interlocking mechanism includes an input conversion mechanism capable of converting the input rotation in the case of left-handed operation and the input rotation in the case of right-handed operation into the same motion relative to the driven mechanism.

2. The input conversion mechanism has a first handle cam and a second handle cam that are selectively connected to the rotation axis of the door handle, The rotation center of the first handle cam and the rotation center of the second handle cam are arranged on the same plane along the vertical and horizontal directions. The door device according to claim 1, further comprising a linkage reversal mechanism that links the first handle cam and the second handle cam so as to rotate in opposite directions.

3. The door device according to claim 1 or 2, wherein the driven mechanism includes at least one of a latch mechanism for temporarily closing the door and an opening force reducing mechanism for kicking the door against the door frame.

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