Shaft fixing device and fitting

Abstract

To provide a shaft fixing device and a fitting capable of fixing a shaft member with high precision while reducing assembly man-hours and costs.SOLUTION: The shaft fixing device includes: a shaft member that is rotatable about a first axis; a base that houses the shaft member; and a fixing member that fixes the shaft member between the base and the fixing member. The base has: a first housing portion that houses one side of the shaft member; and a second housing portion that is located on the other side of the first housing portion and houses the fixing member. The fixing member has: a cylindrical portion that rotatably holds the shaft member; and a claw portion that protrudes radially outward from an outer periphery of the cylindrical portion. The second housing portion has: a holding portion that rotatably holds an outer peripheral surface of the cylindrical portion; a recess that recesses radially outward from the holding portion; and an inner peripheral surface that has an inner diameter larger than an inner diameter of the holding portion and smaller than the maximum outer diameter of the claw portion. The claw portion is inserted from the radially inner side into the recess when the fixing member is housed in the second housing portion. The claw portion is engaged with the second housing portion from the lower side and in a circumferential direction.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to an axis fixing device and fittings. [Background technology]

[0002] For example, an opening and closing device for opening and closing windows in building fixtures, as disclosed in Patent Document 1, has a shaft member connected to a handle and having a worm portion on its outer periphery, and a gear plate that meshes with the worm portion.

[0003] The opening and closing device disclosed in Patent Document 1 opens and closes a window by operating a handle to rotate a gear plate via a shaft member. One end of the shaft member is rotatably supported by one of a pair of pedestals via a bush, and the other end is rotatably supported by the other of the pair of pedestals via a washer. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2010-090640 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the opening and closing device disclosed in Patent Document 1, a pair of bases sandwich and support an axis member, so the relative positional relationship between the pair of bases needs to be maintained with high precision, resulting in a problem of increased labor required for assembling the pair of bases as an axis fixing device.

[0006] When the gear plate is rotated via the shaft member to open or close the window, a large load is applied to the shaft member in the axial direction. In the opening and closing device disclosed in Patent Document 1, a bush and a washer are provided to regulate the axial position of the shaft member, which increases the number of parts and increases costs.

[0007] The present disclosure has been made in consideration of the above points, and aims to provide an axis fixing device and fittings that can fix an axis member with high precision while reducing assembly labor and costs. [Means for solving the problem]

[0008] A first aspect of the present disclosure includes a shaft member rotatable about a first axis, a base that accommodates the shaft member, and a fixing member that fixes the shaft member in a direction along the first axis between the base, wherein the base has a first accommodating portion that extends in a direction along the first axis and accommodates one side of the shaft member in the direction along the first axis, and a second accommodating portion that is located on the other side of the direction along the first axis relative to the first accommodating portion and opens to the other side and accommodates the fixing member, wherein the fixing member includes a cylindrical portion that extends in a direction along the first axis and has a retaining hole that rotatably holds the shaft member, and a second accommodating portion that is provided on both sides in a radial direction centered on the first axis and extends from an outer periphery of the cylindrical portion to an outer periphery of the cylindrical portion in a circumferential engagement region centered on the first axis. the second accommodating portion has a cylindrical shape extending in a direction along the first axis, and has holding portions provided on both sides in the radial direction in a specific range in the circumferential direction and protruding inward in the radial direction to rotatably hold an outer circumferential surface of the cylindrical portion, a recess located on the one side of the holding portion and recessed outward in the radial direction from the holding portion, and an inner circumferential surface provided at a position outside the specific range in the circumferential direction and having an inner diameter larger than an inner diameter of the holding portion and smaller than a maximum outer diameter of the claw portions, wherein the claw portions are inserted from the radially inner side into the recess when the fixing member is accommodated in the second accommodating portion, and the claw portions engage with the second accommodating portion from below and in the circumferential direction. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a front view of a fixture having an axis fixing device according to an embodiment of the present disclosure. [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 an exploded perspective view of the base and the fixing member as viewed from the indoor side. [Figure 6] FIG. 4 is a view of the base and the fixing member from the other side. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 4 is a perspective view of the connector and the handle as viewed from below on the indoor side. [Figure 10] The handle is in the stowed position. [Figure 11] The handle is in the operating position. [Figure 12] Left side view of the spiral gear and gear plate. [Figure 13] FIG. 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. 13. 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] As shown in Fig. 1, the fitting 100 has an opening / closing window 101. As an example, the opening / closing window 101 is a vertical sliding window whose door edge opens and closes centered in 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 unit 30 has a shaft fixing device 31, a connector 36, and a handle H. The shaft fixing device 31 has a cover 32, a base 33, a fixing member 34, and a spiral gear 35. The spiral gear 35 corresponds to the shaft member.

[0022] The base 33 is fixed such that an end surface 33a facing the outdoors contacts, from the indoor side, a surface facing the indoors of the resin lower frame 12B of the lower frame 12. The base 33 has a cylindrical portion 33b and a recess 33f.

[0023] The cylindrical portion 33b extends along a first axis J1 that extends upward from the outdoor side toward the indoor side. The cylindrical portion 33b has a first storage portion 33c located on the lower side, a second storage portion 33d located on the upper side, and a step portion 33h.

[0024] The first housing portion 33c has a circular cross section and extends in a direction along the first axis J1. One side of the spiral gear 35 in the direction along the first axis J1 is inserted from above and housed in the first housing portion 33c, and is held rotatably about the first axis J1. The one side of the spiral gear 35 in the direction along the first axis J1 is the side located on the lower side. In the following description, the one side in the direction along the first axis J1 will simply be referred to as "one side."

[0025] The step portion 33h is located above the first housing portion 33c. The step portion 33h has a diameter larger than that of the first housing portion 33c. The step portion 33h accommodates a flange portion 35C of the spiral gear 35, which will be described later.

[0026] The second housing portion 33d houses the other side of the spiral gear 35 in the direction along the first axis J1. The other side of the spiral gear 35 in the direction along the first axis J1 is above the flange portion 35C. In the following description, the other side in the direction along the first axis J1 is simply referred to as the "other side." The second housing portion 33d is cylindrical and extends in the direction along the first axis J1.

[0027] The second housing portion 33d houses the fixing member 34 with the spiral gear 35 inserted therethrough. As shown in Fig. 5, the fixing member 34 is inserted into the second housing portion 33d from the other side and housed therein. The fixing member 34 has a claw portion 34A, a cylindrical portion 34B, a holding hole 34C, a through hole 34D, and a recess 34E.

[0028] The cylindrical portion 34B extends in a direction along the first axis J1. The cylindrical portion 34B has a holding hole 34C. The holding hole 34C holds the other side of the spiral gear 35 rotatably.

[0029] The claw portion 34A protrudes outward from the outer periphery of the cylindrical portion 34B on both sides in the radial direction. The claw portion 34A is provided in a circumferential locking region 34F that locks with the second housing portion 33d. The locking region 34F is a region where the claw portion 34A locks in the second housing portion 33d, as described later. The claw portion 34A is a snap fit that can elastically deform inward in the radial direction. The other side of the claw portion 34A is inclined in the direction toward the other side as it moves from the outside to the inside in the radial direction.

[0030] The through hole D34 penetrates the cylindrical portion 34B in a direction along the first axis J1. The through hole 34D penetrates between the outer periphery of the cylindrical portion 34B and the retaining hole 34C in the radial direction. The through hole 34D penetrates the cylindrical portion 34B in the circumferential direction at least in the range where the claw portion 34A is provided. Because the through hole 34D is provided, the claw portion 34A can easily elastically deform radially inward when a load is applied radially outward.

[0031] The recesses 34E are provided between the through holes 34D in the circumferential direction. The recesses 34E are arranged symmetrically with respect to the first axis J1. For example, by using a shaft or the like inserted into each of the two recesses 34E, the fixing member 34 can be rotated in the circumferential direction by a couple of forces.

[0032] The second housing portion 33d is cylindrical. The second housing portion 33d opens to the other side. The diameter of the second housing portion 33d is larger than the diameter of the first housing portion 33c and the diameter of the step portion 33h. The second housing portion 33d has a holding portion 33j, a recess 33e, and an inner circumferential surface 33k.

[0033] The holding portion 33j protrudes radially inward in the second housing portion 33d. The holding portion 33j rotatably holds the outer peripheral surface of the cylindrical portion 34B of the fixed member 34. The holding portions 33j are provided on both radial sides of the first axis J1. The holding portions 33j are provided in specific ranges 33m in the circumferential direction.

[0034] The recesses 33e are provided on one side of the holding portion 33j. The recesses 33e are recessed radially outward from a position on one side of the holding portion 33j. When the fixing member 34 is accommodated in the second accommodating portion 33d, the claw portions 34A are inserted into the recesses 33e from the radially inner side. The claw portions 34A inserted into the recesses 33e are engaged with the second accommodating portion 33d from one side. The claw portions 34A inserted into the recesses 33e are engaged with the second accommodating portion 33d on both sides in the circumferential direction.

[0035] Since the other side of the claw portion 34A is inclined toward the other side from the outside to the inside in the radial direction, the dimension of the claw portion 34A in the direction along the first axis J1 becomes large. Even when a load is applied to the fixing member 34 in the direction toward the other side with respect to the cylindrical portion 34B and a large load is applied to the claw portion 34A engaging with the cylindrical portion 34B, stress concentration can be alleviated.

[0036] The inner circumferential surfaces 33k are provided at positions outside the specific range 33m in the circumferential direction. The inner diameter D1 of the inner circumferential surface 33k is larger than the inner diameter D2 of the holding portion 33j and smaller than the maximum outer diameter D3 of the claw portion 34A. The circumferential length of the inner circumferential surface 33k is equal to or greater than the circumferential length of the claw portion 34A.

[0037] In the shaft fixing device 31 of the embodiment, when the fixing member 34 is accommodated in the second accommodation portion 33d, as shown in FIG. 6, without attaching the cover 32, the claw portion 34A of the fixing member 34 is inclined to a position deviated from the holding portion 33j in the circumferential direction, and the cylindrical portion 34B is inserted into the second accommodation portion 33d. Since the maximum outer diameter D3 of the claw portion 34A is larger than the inner diameter D1 of the inner peripheral surface 33k, the claw portion 34A in contact with the inner peripheral surface 33k elastically deforms radially inward. Since the through hole 34D is provided on the radially inner side, the claw portion 34A can easily elastically deform. The outer peripheral surface of the cylindrical portion 34B of the fixing member 34 is held by the holding portion 33j.

[0038] The fixing member 34 inserted into the second housing portion 33d is rotated in the clockwise direction in Fig. 6 with the claw portions 34A elastically deformed radially inward. When the fixing member 34 rotates and the claw portions 34A face the recesses 33e in the second housing portion 33d, the claw portions 34A move radially outward by elastic restoring force and are inserted into the recesses 33e as shown in Fig. 3. The claw portions 34A inserted into the recesses 33e are locked into the second housing portion 33d from one side and are locked on both circumferential sides and are housed in this state.

[0039] As shown in Fig. 7, the recess 33f is recessed from the end face 33a toward the indoor side. The recess 33f communicates with the first storage 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 storage portion 33c, the gear plate 41 inserted into the recess 33f can mesh with the spiral gear 35.

[0040] 8, 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.

[0041] 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 housing portion 33c.

[0042] 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.

[0043] 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 accommodated in the step portion 33h in the cylindrical portion 33b. The flange portion 35C engages with the fixing member 34 from below. The spiral gear 35 is fixed to the base 33 in a prevented state from coming off by the flange portion 35C engaging with the fixing member 34 from below.

[0044] The cover 32 covers the base 33 from the other side. The cover 32 covers the base 33, the fixing member 34, and the spiral gear 35 from the indoor side and the upper side. By covering the base 33, the fixing member 34, and the spiral gear 35 from the indoor side and the upper side with the cover 32, the design can be improved.

[0045] The cover 32 has a pair of restricting portions 32B extending to one side from the inner surface side of the inclined surface 32A. The pair of restricting portions 32B are provided at positions facing the through holes 34D in the fixing member 34 accommodated in the second accommodating portion 33d in the direction along the first axis J1. The pair of restricting portions 32B are inserted into the through holes 34D when the cover 32 is fixed to the base 33. The length of the restricting portions 32B is set to a value that does not contact the cylindrical portion 33b and is located radially inside the claw portions 34A.

[0046] The restricting portion 32B inserted into the through hole 34D is fitted with the through hole 34D at least in the radial direction. The restricting portion 32B fitted with the through hole 34D in the radial direction and positioned radially inward of the claw portion 34A restricts elastic deformation of the claw portion 34A in the radially inward direction.

[0047] As shown in FIG. 9, 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 other side of the spiral gear 35 is inserted into the fitting tube portion 36A. When the other 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.

[0048] 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.

[0049] 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 other side, the 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.

[0050] 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 one side of the arm 37 to the other side. The recess 37A has a rectangular shape when viewed from one side. The connector 36 is inserted into the recess 37A from one side. The arm 37 with the connector 36 inserted into the recess 37A from one side fits into the fitting column portion 36B in the width direction along the third axis J3.

[0051] 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 one side, the arm 37 fits into the shaft 36C in the hole 37B.

[0052] Arm 37 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. 9 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.

[0053] 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.

[0054] 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 toward one side as it moves toward the right side relative to the arm 37 that extends in the left-right direction.

[0055] As shown in FIG. 10, 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.

[0056] 11, 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.

[0057] The output unit 40 outputs a driving force generated by the rotation of the spiral gear 35 to the opening and closing window 101. As shown in FIG. 4, 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. 7, 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.

[0058] 4 and 12, 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 helical teeth whose tooth surfaces are inclined with respect to the second axis J2 in accordance with the inclination of the tooth tips of the worm teeth 35A with respect to the second axis J2.

[0059] 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 360 degrees and the worm teeth 35A moves in a direction along the first axis J1, the gear plate 41A rotates by an amount corresponding 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.

[0060] 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.

[0061] In the shaft fixing device 31 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. 13, 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.

[0062] In the shaft fixing device 31 and the fitting 100 of the embodiment, when the handle H is rotated left to rotate the gear plate 41A and the link plate 41B in the clockwise direction, a load is applied to the spiral gear 35 in the direction toward one side. When the handle H is rotated right to rotate the gear plate 41A and the link plate 41B in the counterclockwise direction, a load is applied to the spiral gear 35 in the direction toward the other side. When a load toward the other side is applied to the flange portion 35C of the spiral gear 35, the fixing member 34, whose claw portion 34A is engaged with the second housing portion 33d from one side, engages with the flange portion 35C from the other side, and the spiral gear 35 can be stably fixed between the base 33 and the fixing member 34 in the direction along the first axis J1.

[0063] In the shaft fixing device 31 and fitting 100 of the embodiment, the shaft fixing device 31 can be assembled with a small number of assembly steps and parts by accommodating and attaching the fixing member 34 to the second accommodation portion 33d of the base 33 in which the spiral gear 35 is accommodated. In the shaft fixing device 31 and fitting 100 of the embodiment, the fixing member 34 attached to the second accommodation portion 33d is positioned in the direction along the first axis J1 and in the circumferential direction with respect to the base 33, so that the spiral gear 35 can be fixed with high accuracy with a small number of assembly steps and parts, and costs can be suppressed.

[0064] In the embodiment of the shaft fixing device 31 and the building fixture 100, when the cover 32 is fixed to the base 33, a pair of regulating portions 32B are inserted into the through holes 34D to regulate the elastic deformation of the claw portions 34A radially inward, so that the spiral gear 35 can be firmly fixed even if a strong load is applied to the spiral gear 35 in a direction toward the other side.

[0065] 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.

[0066] For example, in the embodiment, the restricting portion is provided on the cover 32, but the present invention is not limited to this configuration.

[0067] 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]

[0068] 3...opening / closing device, 31...shaft fixing device, 32...cover, 33...base, 33c...first storage section, 33d...second storage section, 33e...recess, 33j...retaining section, 33k...inner circumferential surface, 34...fixing member, 34A...claw section, 34B...cylindrical section, 34C...retaining hole, 34D...through hole, 34E...recess, 34F...engagement area, 35...spiral gear, 35A...worm teeth, 41...gear plate, 41C...tooth section, fitting...100, opening / closing window...101, H...handle, J1...first axis, J2...second axis

Claims

1. A shaft member rotatable about a first axis; A base that houses the shaft member; a fixing member that fixes the shaft member between the base and the fixing member in a direction along the first axis; Equipped with The base is a first housing portion extending in a direction along the first axis and housing one side of the shaft member in the direction along the first axis; a second housing portion that is located on the other side of the first housing portion in a direction along the first axis, opens to the other side, and houses the fixing member; having The fixing member is a cylindrical portion extending in a direction along the first axis and having a holding hole for rotatably holding the shaft member; claw portions provided on both sides in a radial direction centered on the first axis, protruding outward in the radial direction from an outer periphery of the cylindrical portion in a circumferential engagement region centered on the first axis, and elastically deformable inward in the radial direction; having The second housing portion has a cylindrical shape extending in a direction along the first axis, a holding portion provided on each side in the radial direction in a specific range in the circumferential direction, protruding inward in the radial direction and rotatably holding an outer circumferential surface of the cylindrical portion; a recess located on the one side of the holding portion and recessed radially outward from the holding portion; an inner circumferential surface provided at a position outside the specific range in the circumferential direction and having an inner diameter larger than an inner diameter of the holding portion and smaller than a maximum outer diameter of the claw portion; having When the fixing member is accommodated in the second accommodating portion, the claw portion is inserted into the recess from an inner side in the radial direction, The claw portion is a shaft fixing device that engages with the second accommodating portion from below and in the circumferential direction.

2. The circumferential length of the inner circumferential surface is equal to or greater than the circumferential length of the claw portion. The shaft locking device according to claim 1 .

3. the fixing member has a through hole penetrating in a direction along the first axis between an outer periphery of the cylindrical portion in the radial direction and the retaining hole in at least a range in which the claw portion is provided in the circumferential direction, The shaft fixing device according to claim 2.

4. a restricting portion that is inserted into the through hole from the other side and restricts elastic deformation of the claw portion toward the inside in the radial direction; The shaft fixing device according to claim 3.

5. a cover that covers the base from the other side, The restriction portion is provided on the cover. The shaft fixing device according to claim 4.

6. The shaft fixing device according to claim 1 , wherein the other side of the claw portion is inclined in a direction toward the other side from an outer side toward an inner side in the radial direction.

7. A shaft fixing device according to any one of claims 1 to 6, an opening / closing window that opens and closes by rotation of the shaft member fixed to the shaft fixing device; Fittings equipped with:

Images