Open-close mechanism and fixture

Abstract

To provide an open-close mechanism and a fixture which can contribute to cost saving.SOLUTION: An open-close mechanism and a fixture comprise: a spiral gear that is rotatable by operation with a first axial line as the center and has multiple lines of worm teeth arranged in spiral shape on its circumference with the first axial line as the center; and a gear plate that is rotatable with a second axial line as the center across the first axial line, has a tooth part on its circumference to mesh with the worm tooth, and outputs a driving force generated by the rotation of the spiral gear to the open-close window. A tooth space of the tooth part extends along the second axial line. The spiral gear outputs driving force to a rotating body that has an output tooth to mesh with the worm tooth while rotating. The tooth space of the output tooth extends along the second axial line. The number of lines of the worm tooth and the crossing angle of the first axial line with the second axial line are set at values with which the worm tooth is positioned in the tooth space of the output tooth in the area of meshing with the output tooth in the direction along the second axial line.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present disclosure relates to an opening and closing device and fittings. [Background technology]

[0002] For example, an opening and closing device for opening and closing a sliding window in a building fixture has a rotating shaft connected to a handle and having a worm on its outer periphery, and a gear plate having engaging teeth that mesh with the worm.

[0003] Considering ease of manual operation, the rotation axis of the worm is arranged to intersect with the center of rotation of the gear plate. Because the rotation axis of the worm intersects with the rotation axis of the gear plate, the engagement teeth of the gear plate are formed as helical teeth with tooth grooves inclined obliquely with respect to the rotation axis. A press die or the like is generally used to form the helical teeth, but this has problems in terms of quality and cost.

[0004] Patent Document 1 discloses an opening and closing device in which the rotation axis of the worm and the central axis of rotation of the gear plate are arranged perpendicular to each other, an inclined portion parallel to the axis of the worm wheel is formed in the longitudinal center of the crank for operating the louver interlocking rod, and a radial arm protruding from the worm wheel is loosely fitted into an opening formed in the inclined portion. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 60-108688 Summary of the Invention [Problem to be solved by the invention]

[0006] The switching device described in Patent Document 1 has a large number of parts, which causes a problem of increased costs.

[0007] The present disclosure has been made in consideration of the above points, and has an object to provide an opening and closing device and fittings that can contribute to cost reduction. [Means for solving the problem]

[0008] A first aspect of the present disclosure is an opening and closing device comprising: a spiral gear that can be rotated about a first axis by operation and has a plurality of worm teeth on its outer periphery in a spiral shape centered on the first axis; and a gear plate that can be rotatable about a second axis that intersects the first axis and has a tooth portion on its outer periphery that meshes with the worm teeth, and outputs a driving force generated with rotation of the spiral gear to an opening and closing window, wherein tooth grooves in the tooth portion extend along the second axis, the spiral gear outputs the driving force to a rotating body having output teeth that mesh with the worm teeth when it rotates, the tooth grooves of the output teeth extend along the second axis, and the number of threads of the worm teeth and the intersection angle of the first axis with the second axis are set to values ​​such that the worm teeth are located in the tooth grooves of the output teeth in a region that meshes with the output teeth in a direction along the second axis. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a first embodiment of the present disclosure, and is a front view of a fitting having an opening and closing device. [Diagram 2] Cross section taken along line AA in FIG. [Diagram 3] Cross-sectional view taken along line B-B in FIG. [Figure 4] 1. FIG. [Diagram 5] FIG. 4 is a perspective view of the input unit as seen from the outdoor side. [Figure 6] FIG. [Figure 7] FIG. 4 is a perspective view of the connector and the handle as viewed from below on the indoor side. [Figure 8] The handle is in the stowed position. [Figure 9] The handle is in the operating position. [Figure 10]A view of the spiral gear and gear plate from the right side. [Figure 11] FIG. [Figure 12] FIG. 4 is a perspective view showing an opening and closing device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the opening and closing device and fittings of the present disclosure will be described with reference to Fig. 1 to Fig. 12. The following embodiment shows one aspect of the present disclosure, does not limit the disclosure, and can be modified as desired within the scope of the technical idea of ​​the present disclosure. In addition, in the following drawings, the scale of each structure is different from the actual structure in order to make each configuration easier to understand.

[0011] [First embodiment] As shown in Fig. 1, the fitting 100 of the first embodiment has an opening and closing window 101. As an example, the opening and closing window 101 is a vertical sliding window whose door edge opens and closes centered on the vertical direction.

[0012] The opening and closing window 101 is provided in an opening W formed in a wall of a building. The opening and closing window 101 comprises a frame body 1, a screen 2, and an opening and closing device 3. The screen 2 is housed within the frame body 1. The screen 2 is arranged along a vertical plane. The screen 2 can be opened and closed from a state in which the inside of the frame body 1 is closed to a state in which the door tip is open toward the outdoors.

[0013] In the following description, the direction connecting the outdoor side and the indoor side is referred to as the indoor / outdoor direction. Among the view directions perpendicular to the indoor / outdoor direction, the horizontal direction is referred to as the left / right direction. With regard to the left / right direction, the directions as seen from the indoor side are referred to as the right side and the left side. The vertical direction connecting the upper side and the lower side is referred to as the up / down direction.

[0014] The frame body 1 is formed in a four-sided frame shape and has an upper frame 11, a lower frame 12, and a pair of vertical frames 13.

[0015] The upper frame 11 is located at the upper side of the frame body 1 and extends in the left-right direction. As shown in Fig. 2, the upper frame 11 has a metal upper frame 11A arranged on the outdoor side and a resin upper frame 11B arranged on the indoor side.

[0016] The lower frame 12 is located on the lower side of the frame body 1 and extends in the left-right direction. The lower frame 12 has a metal lower frame 12A arranged on the outdoor side and a resin lower frame 12B arranged on the indoor side. The vertical frame 13 extends in the up-down direction. The vertical frame 13 connects both ends of the upper frame 11 in the left-right direction to both ends of the lower frame 12 in the left-right direction.

[0017] The shoji screen 2 has a frame 20 and glass 29. The frame 20 is formed in a rectangular frame shape. The frame 20 has an upper frame 21, a lower frame 22, and a vertical frame 23. The upper frame 21 is located on the upper side of the frame 20 and extends in the left-right direction. The lower frame 22 is located on the lower side of the frame 20 and extends in the left-right direction. The vertical frame 23 extends in the up-down direction. The vertical frame 23 connects both ends of the upper frame 21 in the left-right direction to both ends of the lower frame 22 in the left-right direction.

[0018] The upper frame 21, the lower frame 22 and the vertical frame 23 are formed with a glass holding groove 26 that is U-shaped in cross section and recessed away from the end face of the glass 29. The end face of the glass 29 is accommodated in the glass holding groove 26 via a glazing channel 27 that has a roughly U-shaped cross section. The glass holding groove 26 and the glazing channel 27 in the vertical frame 23 are not shown in the figure. The shoji screen 2 is guided by an arm provided on the left hanging side by the opening and closing device 3, so that the right door end side of the shoji screen 2 can be opened and closed.

[0019] 3 and 4, the opening and closing device 3 has an input unit 30 and an output unit 40. The input unit 30 receives a driving force for opening and closing the opening window 101. The output unit 40 outputs the driving force received from the input unit 30 to the opening window 101.

[0020] The input unit 30 is fixed from the indoor side to a surface facing the indoor side of the resin lower frame 12B of the lower frame 12. The input unit 30 faces, apart from the upper side, of an opposing surface 12C of the lower frame 12 facing the upward side of the resin lower frame 12B.

[0021] The input section 30 has an input unit 31 and a handle H. The input unit 31 has a cover 32, a base 33, a cap , a spiral gear 35, and a connector .

[0022] The cover 32 covers the base 33, the cap 34, and the spiral gear 35 from the indoor side. By covering the base 33, the cap 34, and the spiral gear 35 from the indoor side with the cover 32, the design can be improved.

[0023] The base 33 has an end surface 33a facing the outdoors that is fixed to the surface of the resin lower frame 12B of the lower frame 12 facing the indoors from the indoor side. The base 33 has a cylindrical portion 33b and a recess 33f. The cylindrical portion 33b extends along a first axis J1 that extends upward from the outdoors toward the indoors. The cylindrical portion 33b has a first hollow portion 33c located on the lower side and a second hollow portion 33d located on the upper side. The first hollow portion 33c has a circular cross section. The spiral gear 35 is inserted from above into the first hollow portion 33c and is held rotatably about the first axis J1.

[0024] The second hollow portion 33d has a circular cross section. The diameter of the second hollow portion 33d is larger than the diameter of the first hollow portion 33c. The cylindrical portion 33b has an engagement hole 33e. The engagement hole 33e extends radially on both sides of the first axis J1. The engagement hole 33e communicates with the second hollow portion 33d on the radially inner side.

[0025] As shown in Fig. 5, the recess 33f is recessed from the end face 33a toward the indoor side. The recess 33f communicates with the first hollow portion 33c. A gear plate 41 (described later) is inserted into the recess 33f from the outdoor side. Since the recess 33f communicates with the first hollow portion 33c, the gear plate 41 inserted into the recess 33f can mesh with the spiral gear 35.

[0026] The cap 34 is inserted into the second cavity 33d from above, and the outer circumferential surface is held. The cap 34 has an engagement protrusion 34A. The engagement protrusion 34A is provided at a position facing the engagement hole 33e in the direction along the first axis J1. The engagement protrusion 34A is a snap fit. The engagement protrusion 34A elastically deforms radially inward when the cap 34 is inserted into the second cavity 33d. The engagement protrusion 34A elastically deforms radially inward and is inserted into the engagement hole 33e by an elastic restoring force when it faces the engagement hole 33e. The engagement protrusion 34A inserted into the engagement hole 33e engages with the cylindrical portion 33b from below, and the cap 34 is fixed to the base 33 in a state in which it is prevented from coming off. A spiral gear 35 is provided penetrating the cap 34.

[0027] 6, the spiral gear 35 extends along the first axis J1. The spiral gear 35 has worm teeth 35A, a knurled portion 35B, and a flange portion 35C.

[0028] The worm teeth 35A are provided on the outer periphery of the lower end side facing the outside. The worm teeth 35A are provided in a spiral shape centered on the first axis J1. When the spiral gear 35 is inserted into the cylindrical portion 33b of the base 33, the worm teeth 35A are held in the first cavity portion 33c.

[0029] The worm teeth 35A are provided with a plurality of teeth. In this embodiment, the worm teeth 35A are provided with five teeth.

[0030] The knurled portion 35B is provided on the outer periphery of the upper end side facing the indoor side. The knurled portion 35B protrudes radially outward from the first axis J1, and has a plurality of ridges extending along the first axis J1 at intervals in the circumferential direction. When the spiral gear 35 is inserted into the cylindrical portion 33b of the base 33, the knurled portion 35B protrudes from the cover 32 and the base 33 as shown in FIG. 3.

[0031] The flange portion 35C is disposed above the worm teeth 35A. The flange portion 35C has the maximum diameter in the spiral gear 35. The flange portion 35C is disposed above the cap 34. The spiral gear 35 is fixed to the base 33 in a prevented state of coming off by the flange portion 35C engaging with the cap 34 from below.

[0032] As shown in FIG. 7, the connector 36 has a fitting tube portion 36A, a fitting column portion 36B, and a shaft portion 36C. The fitting tube portion 36A is cylindrical and extends along the first axis J1. A knurled portion 36D extending along the first axis J1 is provided inside the fitting tube portion 36A. As shown in FIG. 3, the upper side of the spiral gear 35 is inserted into the fitting tube portion 36A. When the upper side of the spiral gear 35 is inserted into the fitting tube portion 36A, the knurled portion 35B and the knurled portion 36D of the spiral gear 35 mesh with each other in the circumferential direction centered on the first axis J1. By the knurled portion 35B and the knurled portion 36D meshing with each other in the circumferential direction, the spiral gear 35 rotates when the connector 36 rotates.

[0033] The fitting column portion 36B is a rectangular column extending along the first axis J1. The fitting column portion 36B is fitted with the handle H in the width direction, which is a direction along a third axis J3 that is perpendicular to the first axis J1 and runs along the indoor / outdoor direction.

[0034] The shaft portion 36C is shaped like a shaft having a circular cross section extending along the third axis J3. The shaft portion 36C penetrates the fitting column portion 36B on the upper and left side of the fitting column portion 36B. The shaft portion 36C protrudes from the fitting column portion 36B on both sides in the direction along the third axis J3.

[0035] The handle H has an arm 37 and a knob portion 38. The arm 37 extends in the left-right direction in a stored state described later. The arm 37 has a recess 37A and a hole portion 37B. The recess 37A is recessed from the lower side of the arm 37 to the upper side. The recess 37A has a rectangular shape when viewed from below. The connector 36 is inserted into the recess 37A from the lower side. The arm 37 with the connector 36 inserted into the recess 37A from the lower side fits into the fitting column portion 36B in the width direction along the third axis J3.

[0036] The hole 37B penetrates the arm 37 in the direction along the third axis J3 via the recess 37A. The hole 37B has a circular shape when viewed from the third axis J3. When the connector 36 is inserted into the recess 37A from below, the arm 37 fits into the shaft 36C in the hole 37B.

[0037] Arm 37, which is fitted with shaft portion 36C in hole 37B, can rotate in the circumferential direction around shaft portion 36C. Arm 37 has a regulation wall 37C at the left end. When arm 37 rotates counterclockwise in FIG. 7 around shaft portion 36C, regulation wall 37C comes into contact with regulation surface 36E facing left in connector 36, thereby regulating the counterclockwise position of arm 37.

[0038] In the recess 37A, the arm 37 that fits with the fitting column portion 36B in the width direction along the third axis J3 is rotatable in the circumferential direction about the first axis J1 together with the connector 36. By rotating the arm 37 in the circumferential direction about the first axis J1 by operation, the spiral gear 35 can be rotated via the connector 36. The handle H is rotatably connected to the spiral gear 35.

[0039] The knob 38 is a portion that the user grasps and operates when rotating the arm 37 in the circumferential direction about the shaft 36C and when rotating the arm 37 in the circumferential direction about the first axis J1. The knob 38 is detachably attached to the tip of the arm 37. The knob 38 is attached to the tip of the arm 37 that is rotatable about the shaft 36C. The knob 38 extends in a direction downward as it moves toward the right side relative to the arm 37 that extends in the left-right direction.

[0040] As shown in FIG. 8, the handle H is in a housed position along the inclined surface 32A of the cover 32 when the arm 37 is not rotating in the circumferential direction about the first axis J1 to rotate the spiral gear 35.

[0041] 9, when the arm 37 rotates counterclockwise about the first axis J1 to rotate the spiral gear 35, the handle H is in an operating position where the knob portion 38, which is defined by the defining wall 37C and the regulating surface 36E, faces upward along the first axis J1. The handle can be folded from the operating position where the spiral gear 35 is rotated to a storage position where the spiral gear 35 is not rotated.

[0042] The output unit 40 outputs a driving force generated by the rotation of the spiral gear 35 to the opening and closing window 101. The output unit 40 has a gear plate 41, a connecting plate 42, and a bracket 43. The gear plate 41 is rotatably installed on the frame 1. The gear plate 41 has a gear plate 41A and a link plate 41B. The gear plate 41A is rotatable about the second axis J2. As shown in FIG. 5, the gear plate 41A is rotatably supported by a rotating shaft 33g extending along the second axis J2. The rotating shaft 33g is provided on the base 33.

[0043] 4 and 10, the gear plate 41A has teeth 41C on its outer periphery. The teeth 41C mesh with the worm teeth 35A of the spiral gear 35. A plurality of teeth 41C are provided at intervals in the circumferential direction. The teeth 41C are spur teeth whose tooth grooves extend along the second axis J2.

[0044] The worm teeth 35A of the spiral gear 35 that mesh with the toothed portion 41C are located in the tooth grooves of the toothed portion 41C in the region that meshes with the toothed portion 41C in the direction along the second axis J2. The worm teeth 35A are substantially parallel to the second axis J2 in the region that meshes with the toothed portion 41C. The region where the worm teeth 35A mesh with the toothed portion 41C is an area the thickness of the gear plate 41. The spiral gear 35 outputs a driving force to the gear plate 41 that has the toothed portion 41C that meshes with the worm teeth 35A when it rotates. The gear plate 41 corresponds to a rotating body. The toothed portion 41C corresponds to an output tooth.

[0045] The number of worm teeth 35A in the spiral gear 35 and the intersection angle θ of the first axis J1 with the second axis J2 are set to values ​​such that the worm teeth 35A are located in the tooth grooves of the tooth portion 41C in the area where they mesh with the tooth portion 41C and are approximately parallel to the second axis J2.

[0046] The worm teeth 35A are positioned in the tooth grooves of the tooth portion 41C in the region where they mesh with the tooth portion 41C and are approximately parallel to the second axis J2, so that the tooth portion 41C can be a spur tooth even in a configuration in which the first axis J1 and the second axis J2 intersect.

[0047] The gear plate 41A rotates in response to the movement of the worm teeth 35A, which mesh with the tooth portion 41C, in a direction along the first axis J1 as the spiral gear 35 rotates. For example, when the spiral gear 35 rotates 72° and the worm teeth 35A move one pitch in a direction along the first axis J1, the gear plate 41A rotates by an amount equivalent to the pitch of the tooth portion 41C. The rotation direction of the gear plate 41A corresponds to the rotation direction of the spiral gear 35.

[0048] The link plate 41B curves and extends in a leftward direction from the gear plate 41A toward the outdoor side. The right end of the connecting plate 42 is rotatably connected to the link plate 41B about an axis extending in the vertical direction. The connecting plate 42 extends in a direction toward the indoor side as it approaches the left side. The left end of the connecting plate 42 is rotatably connected to the indoor end of the bracket 43 about an axis extending in the vertical direction. The bracket 43 is connected at its rear end to the lower frame 22 of the frame body 20 of the shoji screen 2 from the indoor side.

[0049] In the opening and closing device 3 and the fitting 100 of the embodiment, for example, by pinching the knob 38 and rotating the handle H, a driving force for opening and closing the opening and closing window 101 is input. For example, as shown in FIG. 11, the driving force generated when the handle H is rotated left rotates the gear plate 41A and the link plate 41B in a clockwise direction via the connector 36 and the spiral gear 35. When the gear plate 41A and the link plate 41B rotate in a clockwise direction, the connecting plate 42 and the bracket 43 move to the right, and the bracket 43 rotates in a counterclockwise direction. When the bracket 43 rotates in a counterclockwise direction, the driving force input by the rotation of the handle H is output, and the door tip of the door screen 2 opens toward the outside. When the door screen 2 is in an open state, the driving force generated when the handle H is rotated right can close the door screen 2 in the reverse operation to the above.

[0050] For example, when the tooth portion 41C is a helical tooth, the tooth groove is formed, for example, by pressing while rotating the gear plate 41A. The larger the intersection angle between the tooth groove and the second axis J2, the more difficult the press processing. In the opening and closing device 3 and the fitting 100 of the embodiment, the worm teeth 35A are located in the tooth groove of the tooth portion 41C in the region where they mesh with the tooth portion 41C and are substantially parallel to the second axis J2. This allows the tooth portion 41C to be a spur tooth even in a configuration in which the first axis J1 and the second axis J2 intersect, making it easier to manufacture the gear plate 41 and contributing to cost reduction.

[0051] [Second embodiment] A second embodiment of the opening and closing device and fittings will be described with reference to Fig. 12. In this figure, the same elements as those of the first embodiment shown in Figs. 1 to 11 are given the same reference numerals, and the description thereof will be omitted.

[0052] 12, the opening and closing device 3 of the second embodiment has a reduction gear 70 as an intermediate gear. The reduction gear 70 is a two-stage gear. The reduction gear 70 has a first tooth portion 71 and a second tooth portion 72.

[0053] The first tooth portion 71 is located on the lower side. The first tooth portion 71 meshes with the worm teeth 35A of the spiral gear 35. The first tooth portion 71 is a spur tooth whose tooth groove extends along the second axis J2. The worm teeth 35A of the spiral gear 35 are located in the tooth groove of the first tooth portion 71 in a region where the worm teeth 35A of the spiral gear 35 mesh with the first tooth portion 71 in the direction along the second axis J2.

[0054] The second toothed portion 72 is located on the upper side. The second toothed portion 72 meshes with the toothed portion 41C of the gear plate 41. The second toothed portion 72 is a spur tooth whose tooth groove extends along the second axis J2. The number of teeth of the first toothed portion 71 is greater than the number of teeth of the second toothed portion 72. As an example, the number of teeth of the first toothed portion 71 is 32, and the number of teeth of the second toothed portion 72 is 6.

[0055] The spiral gear 35 outputs a driving force to a reduction gear 70 having a first tooth portion 71 that meshes with the worm teeth 35A when the spiral gear 35 rotates. The reduction gear 70 corresponds to a rotating body. The first tooth portion 71 corresponds to an output tooth. The other configurations are similar to those of the opening and closing device 3 of the first embodiment.

[0056] In the opening and closing device 3 and fitting 100 of the embodiment, in addition to obtaining the same action and effect as the opening and closing device 3 of the first embodiment, the driving force generated when the handle H is operated to rotate the spiral gear 35 is output to the gear plate 41 via the reduction gear 70, so that the torque required when operating the handle H can be reduced to 6 / 32.

[0057] Although the preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to the examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0058] For example, in the embodiment, the worm teeth 35A are formed with five teeth, but the present invention is not limited to this configuration. The worm teeth 35A may be formed with two to three teeth or six or more teeth as long as the teeth are provided with a plurality of teeth and are positioned in the tooth grooves of the output teeth in the region where the teeth mesh with the output teeth in the direction along the second axis J2.

[0059] In the embodiment, the configuration in which one intermediate tooth is provided is illustrated, but the present invention is not limited to this configuration, and a configuration in which a plurality of intermediate teeth are provided may also be used.

[0060] When the toothed portion 41C of the gear plate 41 has spur teeth, it is also possible to adopt a configuration without providing the handle H. For example, a configuration in which a spiral gear having worm teeth that mesh with the toothed portion 41C is connected to a motor, or a configuration in which one or more intermediate gears including an intermediate gear that meshes with the toothed portion 41C are arranged and a spiral gear having worm teeth that mesh with the intermediate gear is connected to a motor, can be used to make the operation electrically rather than manually.

[0061] In the embodiment, the opening / closing window 101 is a vertical sliding window whose door edge opens and closes around the vertical direction, but is not limited to this configuration. The opening / closing window 101 may be a horizontal sliding window whose door edge opens and closes around the horizontal direction, or a louver window. [Explanation of symbols]

[0062] 3...opening and closing device, 35...spiral gear, 35A...worm teeth, 41...gear plate, 41C...tooth portion, 70...reduction gear, 71...first tooth portion, 72...second tooth portion, fitting...100, opening and closing window...101, H...handle, J1...first axis, J2...second axis

Claims

1. a spiral gear that can rotate about a first axis by a rotational operation and has a plurality of worm teeth formed on an outer periphery thereof in a spiral shape centered on the first axis; a gear plate that is rotatable about a second axis that intersects with the first axis, has teeth on an outer periphery that mesh with the worm teeth, and outputs a driving force generated by rotation of the spiral gear to an opening and closing window; Equipped with The tooth groove in the tooth portion extends along the second axis, the spiral gear outputs the driving force to a rotor having output teeth that mesh with the worm teeth when the spiral gear rotates; The tooth spaces of the output teeth extend along the second axis, a number of threads of the worm teeth and an angle of intersection of the first axis with respect to the second axis are set to values ​​such that the worm teeth are positioned in tooth grooves of the output teeth in a region where the worm teeth mesh with the output teeth in a direction along the second axis.

2. the rotating body is the gear plate, The output teeth are the teeth portion. The opening and closing device according to claim 1 .

3. the rotating body is a two-stage gear having a first tooth portion and a second tooth portion, The output teeth are the first teeth portion, The second tooth portion meshes with the tooth portion. The opening and closing device according to claim 1 .

4. The opening and closing device according to claim 3 , wherein the rotating body is a reduction gear, the first teeth portion having a larger number of teeth than the second teeth portion.

5. A fitting comprising an opening and closing device according to any one of claims 1 to 4.

Images