Door handle structure

Abstract

To provide a door handle structure that can be installed on doors of various thicknesses and improve security while avoiding an increase in the number of parts to be assembled.SOLUTION: A door handle structure includes a pair of pedestals, at least one connecting shaft, a pair of rotors, a pair of handles, and a pair of joining members. The pair of pedestals are plate-shaped, have an engaged portion, and are secured to a door on both sides of the door. The at least one connecting shaft connects the pair of pedestals to each other and secures them to the door. The pair of rotors are rotatably supported by the pair of pedestals. The pair of joining members are plate-shaped and slidably attached to the rotors in a direction intersecting the rotary axis center of the rotors to join the handles to the rotors. The pair of joining members have a facing surface facing the door, which faces fastener, and an attaching portion of an engaging member. The engaging member engages with the engaged portion in one of the pair of pedestals to fasten the joining member in a non-slidable manner.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a door handle structure, and more particularly to a door handle structure suitable for attaching handles to both sides of doors of various thicknesses. [Background technology]

[0002] Patent Document 1 describes a door handle structure for attaching handles to both sides of doors of various thicknesses, which includes a pair of handles to be disposed on both sides of the door and a pair of support mechanisms. The pair of support mechanisms rotatably support the pair of handles on both sides of the door. The pair of support mechanisms are fixed to both sides of the door by being connected to each other by two long, cylindrical connecting shafts. Therefore, by adjusting the length of the connecting shafts to correspond to the door thickness, the support mechanisms can be fixed to both sides of doors of various thicknesses, and the door handle structure can be installed on doors of various thicknesses.

[0003] Furthermore, in the door handle structure described in Patent Document 1, a pair of support mechanisms are fixed to both ends of the connecting shaft by set screws, and by loosening the set screws, the pair of support mechanisms can be removed from the door, and the handle can be removed, making it easy to attach and detach the handle to and from the door. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-176469 Summary of the Invention [Problem to be solved by the invention]

[0005] However, if the set screw can be loosened from outside the room and the handle can be removed, the lock can be easily disabled. Therefore, in consideration of security, it is desirable that the set screw can be loosened from inside the room, but cannot be loosened from outside the room.

[0006] In the door handle structure described in Patent Document 1, for example, to prevent the set screws from being loosened from the outside of the room, it is necessary to change the casing, which is a part of the support mechanism, between the inside and outside of the room. In order to change the parts that make up the support mechanism between the inside and outside of the room, it is necessary to manufacture two types of the same parts for one door handle structure, one for the inside and one for the outside of the room. This increases the number of parts in the door handle structure to be manufactured, leading to higher costs, more complicated parts management, and more complicated work management when installing the door handle structure on the door, such as by managing to prevent parts that should be installed on the inside of the room from being installed on the outside.

[0007] The present invention has been made in consideration of the above-mentioned problems, and its purpose is to provide a door handle structure that can be installed on doors of various thicknesses and that can improve security while avoiding an increase in the number of parts that need to be manufactured. [Means for solving the problem]

[0008] The door handle structure disclosed herein comprises a pair of bases, at least one connecting shaft, a pair of rotating bodies, a pair of handles, and a pair of joining members. The pair of bases are plate-shaped, have engaging portions, and are fixed to the door on both sides of the door. The at least one connecting shaft connects the pair of bases to each other and fixes them to the door. The at least one connecting shaft is connected to both ends of the pair of bases by shaft-shaped fasteners on the surfaces of the pair of bases opposite the door. The pair of rotating bodies are rotatably supported by the pair of bases. The pair of handles are rotatably connected to the pair of rotating bodies. The pair of joining members are plate-shaped, adjacent to the bases in a direction along the rotation axis of the rotating body, and attached to the rotating body so as to be slidable in a direction intersecting the rotation axis of the rotating body, joining the handles to the rotating body. The pair of joining members also have covering portions and mounting portions for locking members on their surfaces facing the door. The cover portion covers the fastener on the surface of the pair of bases opposite the door. The locking member engages with the engaged portion of one of the pair of bases to lock the connecting member so that it cannot slide.

[0009] In the door handle structure disclosed herein, the engaged portions of the pair of pedestals are formed by peripheral wall portions of through-holes that penetrate the pedestals in a thickness direction, the mounting portions of the locking members overlap the through-holes in a direction along the rotation axis of the rotating body, and the locking members are mounted to the mounting portions of the locking members of one of the pair of pedestals through the through-holes.

[0010] In the door handle structure disclosed herein, the mounting portion of the locking member is formed with a female thread, and the locking member has a male thread portion that screws into the female thread of the mounting portion and an engaging portion that engages with the engaged portion of the one of the pair of bases. [Effects of the Invention]

[0011] The door handle structure according to the present invention can be installed on doors of various thicknesses, and can improve security while avoiding an increase in the number of parts to be manufactured. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is an external perspective view showing a door handle structure according to an embodiment of the present invention; [Figure 2] 1 is an exploded perspective view showing a door handle structure according to an embodiment of the present invention; [Figure 3] 1 is a cross-sectional view showing a door handle structure according to an embodiment of the present invention. [Figure 4] 4(a) is a front view showing the base of the embodiment, and FIG. 4(b) is a cross-sectional view taken along line AA of FIG. [Figure 5] 1A is a front view showing a rotating body of an embodiment, FIG. 1B is a plan view showing a rotating body of an embodiment, and FIG. 1C is a side view showing a rotating body of an embodiment. [Figure 6] 6(a) is a rear view showing the handle of the embodiment, (b) is a side view showing the handle of the embodiment, and (c) is a cross-sectional view taken along line BB in FIG. 6(a). [Figure 7] 7(a) is a front view showing the joining member of the embodiment, (b) is a cross-sectional view taken along line CC in FIG. 7(a), and (c) is a side view showing the joining member of the embodiment. [Figure 8] 8(a) is a front view showing the door handle structure according to the embodiment of the present invention, (b) is a cross-sectional view taken along line DD in FIG. 8(a), and (c) is a cross-sectional view taken along line DD in FIG. 8(a) when the handle is in an inclined state. [Figure 9] 9(a) is a rear view showing a handle of another embodiment of the present invention, (b) is a side view showing a handle of another embodiment, and (c) is a cross-sectional view taken along line EE in FIG. 9(a). [Figure 10] FIG. 10 is an external perspective view showing a door handle structure according to still another embodiment of the present invention. [Figure 11] 11 is an external perspective view showing another state of the door handle structure of FIG. 10. FIG. [Figure 12]12(a) is a front view showing a joining member of the door handle structure of Fig. 10. (b) is a cross-sectional view taken along line FF of Fig. 12(a). DETAILED DESCRIPTION OF THE INVENTION

[0013] The door handle according to the embodiment of the present invention will be described in detail below with reference to the drawings. Note that the embodiment described below is a preferred example for carrying out the present invention, and therefore various technical limitations are imposed. However, the present invention is not limited to this embodiment unless otherwise specified in the following description to the effect that the invention is limited.

[0014] <Embodiment> A door handle structure according to an embodiment of the present invention will be described below with reference to Fig. 1 to Fig. 3. Fig. 1 is an external perspective view showing the door handle structure according to the embodiment. Fig. 2 is an exploded perspective view showing the door handle structure according to the embodiment. Fig. 3 is a cross-sectional view showing the door handle structure according to the embodiment.

[0015] 1 to 3, the door handle structure according to the embodiment includes a pair of bases 10, a pair of rotating bodies 20, a pair of handles 30, and a pair of connecting members 40, which are installed on both sides of a hinged door 1. The pair of handles 30 have a flat shape so that the door handle structure according to the embodiment can be suitably installed on a fire door, a pipe shaft, an electrical equipment room door, or the like. The pair of handles 30 are tiltable so that they are inclined at a predetermined angle relative to the surface 1a of the door 1 when the door 1 is pulled open, and in the embodiment, a gap LG is formed below the pair of handles 30 so that the fingertips can be inserted.

[0016] The door handle structure of the embodiment further includes a square core 50 and at least one connecting shaft, that is, a pair of connecting shafts 60. The square core 50 connects the handles 30 installed on both sides of the door 1. The pair of connecting shafts 60 are hexagonal pipe-shaped and have female threads 61 on both ends, which connect the pair of bases 10 arranged on both sides of the door 1 to each other and fix each base 10 to the door 1.

[0017] The base of the embodiment will be described below with reference to Fig. 4. Fig. 4(a) is a front view showing the base of the embodiment, and Fig. 4(b) is a cross-sectional view taken along line AA of Fig. 4(a).

[0018] The base 10 in this embodiment is in the shape of a circular plate, and is fixed to the door 1 so as to be in contact with the surface 1a of the door 1 or so as to be in contact with a case of a locking device (not shown) that is fixed to the door 1. In this embodiment, the base 10 has a center hole 11, a pair of connecting screw insertion holes 12, and a through hole 13 that penetrate the base 10 in the thickness direction.

[0019] The center hole 11 is circular, and a rotating body 20 is attached to it. Connecting screws 12a (shown in FIG. 2) are inserted into the pair of connecting screw insertion holes 12 from the surfaces of the pair of bases 10 opposite the door 1. The connecting screws 12a are axial fasteners that thread into the female threads 61 of the connecting shaft 60 from the surfaces of the pair of bases 10 opposite the door 1, via the pair of connecting screw insertion holes 12, thereby connecting the pair of bases 10 to both ends of the connecting shaft 60. The through hole 13 is an elongated hole that extends in an arc shape along the outer periphery of the base 10, as shown in FIG. 4, and its peripheral wall portion is an engaged portion that engages with the locking screw 13a, as will be explained in detail later, and is formed in the pair of bases 10 to enhance the anti-theft performance of the door handle structure.

[0020] Next, the rotating body of the embodiment will be described with reference to Fig. 5. Fig. 5(a) is a front view showing the rotating body of the embodiment. Fig. 5(b) is a plan view showing the rotating body of the embodiment. Fig. 5(c) is a side view showing the rotating body of the embodiment.

[0021] The rotating body 20 of the embodiment has a cylindrical shaft portion 21 and a head portion 22 provided at one end of the shaft portion 21, and is connected to the latch bolt 2 via a square core 50 so as to be able to drive the latch bolt 2 forward and backward. The rotating body 20 is supported on the base 10 in a center hole 11 of the base 10 so as to be able to rotate forward and backward.

[0022] The shaft portion 21 of the rotating body 20 has a fitting hole 21a and an outer circumferential groove portion 21b, and is inserted into the center hole 11 of the base 10. As shown in FIGS. 2 and 3 , a ring 23 and a spacer 24 are fitted to the exterior of the shaft portion 21. The ring 23 is interposed between the head 22 of the rotating body 20, the spacer 24, and the base 10. The spacer 24 is a cylindrical body made of resin, and has a flange portion 24a at one end. The spacer 24 functions as a bearing for supporting the shaft portion 21 in the center hole 11 of the base 10.

[0023] 5, the fitting hole 21a opens at the tip end surface, which is the end surface of the shaft portion 21 opposite to the head 22, and is fitted with the square core 50. By fitting the square core 50 into the fitting hole 21a, the rotating body 20 rotates integrally with the square core 50.

[0024] The outer circumferential groove 21b is provided around the outer circumferential surface of the shaft portion 21 in a position close to the tip end surface of the shaft portion 21. A C-shaped retaining ring 25 shown in Figures 2 and 3 is fitted into the outer circumferential groove 21b, and the C-shaped retaining ring 25 holds the spacer 24 and the ring 23 on the shaft portion 21.

[0025] The head 22 of the rotor 20 is a circular plate-like member having a larger diameter than the shaft 21, and has a pair of fitting grooves 22a on its outer periphery. The pair of fitting grooves 22a are arranged opposite each other with the central axis of the shaft 21 therebetween, with their bottoms facing radially inward of the head 22 and their openings facing radially outward of the head 22, and are formed to extend parallel to each other at equal distances from the central axis of the shaft 21 and in a direction perpendicular to the central axis of the shaft 21.

[0026] Next, the handle of the embodiment will be described with reference to Fig. 6. Fig. 6(a) is a rear view showing the handle of the embodiment. Fig. 6(b) is a side view showing the handle of the embodiment. Fig. 6(c) is a cross-sectional view taken along line BB in Fig. 6(a). The handle 30 of the embodiment has a surface plate portion 31 and a long plate-shaped peripheral plate portion 32, and is rotatably connected to a pair of rotating bodies 20.

[0027] The surface panel portion 31 is disposed at a predetermined distance from the surface 1a of the door 1 so as to cover the base 10. In this embodiment, the surface panel portion 31 is substantially square, and is disposed so as to overlap the entire base 10 in a direction perpendicular to the surface 1a of the door 1.

[0028] The peripheral plate portion 32 is a portion to which force is applied by fingers when rotating the handle 30, and is erected from the peripheral edge of the front plate portion 31 toward the door 1 so as to surround the base 10. In this embodiment, as shown in FIG. 3 , the peripheral plate portion 32 surrounds the base 10 such that the tip portion, which is the end portion facing the door 1, faces a portion of the outer circumferential surface of the base 10.

[0029] Also, as shown in FIG. 6, in this embodiment, the handle 30 has a pair of connecting protrusions 31a, a pair of joining screw holes 31b, a pair of lateral notches 32a, a lower notch 32b, a partition wall portion 33, and a pair of positioning protrusions 34.

[0030] The pair of connecting protrusions 31a are cylindrical and protrude from the back surface of the front panel portion 31, which is the surface facing the door 1, toward the door 1, above the center of the handle 30 in the vertical direction. The pair of connecting protrusions 31a are loosely fitted into a pair of protrusion loose-fitting holes 43 described below, and connect the handle 30 to the joining member 40 in a tiltable manner.

[0031] The handle 30 is tiltably connected to the connecting member 40 above the center of the handle 30 in the vertical direction, so that the lower end of the handle 30 has a larger range of motion than the upper end. Therefore, in this embodiment, the lower end of the surface panel portion 31 is the tilting tip 31c.

[0032] The pair of joining screw holes 31b are formed on the tip surfaces of the pair of connecting protrusions 31a in the protruding direction. Joining screws 43a shown in FIG. 2 are screwed into the pair of joining screw holes 31b.

[0033] The pair of lateral notches 32a are formed on both sides of the handle 30 by cutting out the peripheral plate portion 32, for example, in a semicircular shape, so that the peripheral plate portion 32 does not overlap with the fixing screw holes 42 described below when the handle 30 is in the tilted state shown by the virtual lines in Figure 6(b).

[0034] The lower cutout 32b is formed in the lower part of the handle 30 by cutting out the peripheral plate 32 in, for example, a square shape so that when the handle 30 is tilted, the fingertips can be easily inserted into the back side of the surface plate 31. By making the lower end of the surface plate 31 the tilting tip 31c, the lower cutout 32b for inserting the fingertips can be formed in the lower part of the handle 30, making it difficult to see the internal structure of the door handle structure from the outside and facilitating an improvement in design.

[0035] The partition wall 33 is erected on the rear surface of the surface plate 31 and defines a space on the rear surface side of the surface plate 31 in which the joining member 40 is disposed.

[0036] The pair of positioning protrusions 34 protrude from the back surface of the surface plate portion 31 toward the door 1, below the center of the handle 30 in the vertical direction. In this embodiment, the pair of positioning protrusions 34 have a conical shape whose diameter decreases toward the tip in the protruding direction, and are positioning means that position the handle 30 so that it does not tilt in the rotation direction around the rotation axis I0 of the rotating body 20 when not in operation by abutting against the joining member 40 at a position near the tilting tip 31c of the surface plate portion 31.

[0037] Next, a joining member according to an embodiment will be described with reference to Figures 7 and 8. Figure 7(a) is a front view showing the joining member according to an embodiment. Figure 7(b) is a cross-sectional view taken along line CC in Figure 7(a). Figure 7(c) is a side view showing the joining member according to an embodiment. Figure 8(a) is a front view showing a door handle structure according to an embodiment of the present invention. Figure 8(b) is a cross-sectional view taken along line DD in Figure 8(a). Figure 8(c) is a cross-sectional view taken along line DD in Figure 8(a) when the handle is in an inclined state.

[0038] As shown in Fig. 7, the pair of connecting members 40 are plate-like and have an overall shape resembling a horseshoe shape formed by cutting out the inner portion of a circular plate. Each of the connecting members 40 has a pair of arms 40a extending parallel to one another and an intermediate portion 40b connecting the pair of arms 40a at their base ends. The pair of connecting members 40 are disposed between the surface plate portion 31 of the handle 30 and the base 10, and are adjacent to the base 10 in a direction along the rotation axis I0 of the rotating body 20. The pair of connecting members 40 connect the pair of handles 30 to the base 10 via the rotating body 20 so that the pair of handles 30 can be tilted between a normal state and an inclined state. The pair of connecting members 40 also connect the pair of handles 30 to the pair of rotating bodies 20 so that the pair of rotating bodies 20 can be rotated.

[0039] The normal state is a state of the handle 30 in which the surface panel portion 31 is approximately parallel to the surface 1a of the door 1, as shown by the solid line in Figure 3. "Approximately parallel" means a state in which the surface panel portion 31 appears to the human eye to be not tilted relative to the surface 1a of the door 1, and although there are no particular limitations, as a rough guide, it is a state in which the tilt of the surface panel portion 31 relative to the surface 1a of the door 1 is less than 10 degrees, for example.

[0040] The tilted state is a state in which, as shown by the imaginary line in Figure 3, the surface panel 31 is tilted at a predetermined angle with respect to the surface 1a of the door 1, and a gap LG large enough to fit a finger is formed between the tilting tip 31c of the surface panel 31 and the base 10. However, the predetermined angle is not particularly limited as long as it allows at least a fingertip to be inserted between the tilting tip of the surface panel 31 and the base 10 and allows easy application of force to pull the handle 30 toward you, but is preferably 10 degrees or more and 30 degrees or less, and more preferably 10 degrees or more and 20 degrees or less.

[0041] 7, the joining member 40 has an outer peripheral surface 40d, a pair of fitting protrusions 41, a pair of fixing screw holes 42, a pair of protrusion loose-fitting holes 43, a pair of spring accommodating recesses 44, locking screw holes 45, and a pair of cover portions 46. The outer peripheral surface 40d of the joining member 40 is the surface that faces the peripheral plate portion 31 of the handle 30 when the handle 30 is in the normal state.

[0042] The pair of fitting protrusions 41 are protrusions formed on each opposing surface of the pair of arm portions 40a so as to extend along the longitudinal direction of the pair of arm portions 40a, and are slidably fitted into the pair of fitting grooves 22a of the rotating body 20. By slidably fitting the pair of fitting protrusions 41 into the pair of fitting grooves 22a, the joining member 40 is connected to the rotating body 20 so as to be able to rotate the rotating body 20, and is attached to the rotating body 20 so as to be slidable in a direction intersecting the rotation axis 10 of the rotating body 20. Note that when the pair of fitting protrusions 41 are slidably fitted into the pair of fitting grooves 22a, the sliding direction of the joining member 40 is a direction perpendicular to the rotation axis 10 of the rotating body 20 in this embodiment, that is, a direction from top to bottom in FIG. 8(a).

[0043] The pair of fixing screw holes 42 can receive fixing screws 42a shown in Fig. 2, and have one end openings on the outer peripheral surface 40d and other end openings on the opposing surfaces of the pair of arm portions 40a. In addition, the pair of fitting protrusions 41 are each separated at the other end openings of the pair of fixing screw holes 42.

[0044] In this embodiment, the pair of fixing screw holes 42 are female threaded holes that are threaded with fixing screws 42a and penetrate each arm portion 40a along an orthogonal line 42b. The orthogonal line 42b is a straight line that is orthogonal to the central axis of the imaginary circle 40c and extends in a direction perpendicular to the longitudinal direction of the pair of arm portions 40a. The imaginary circle 40c complements the cutout portion that gives the joining member 40 a horseshoe shape, and is an imaginary shape when the outer periphery of the joining member 40 is considered to be a perfect circle.

[0045] In this embodiment, the fixing screw 42a is a shaft-shaped fixing member formed from a recessed hexagonal set screw, and can be loosened or tightened via one-end openings of the fixing screw holes 42, fixing the joining member 40 to the rotating body 20. As shown in Figure 6(b), one-end openings of the fixing screw holes 42 on the outer circumferential surface 40d are covered by the peripheral plate portion 32 when the handle 30 is in the normal state, and are in an inoperable state where the fixing screws 42a cannot be operated via the one-end opening, and are not covered by the peripheral plate portion 32 when the handle 30 is in the tilted state, and are in an operable state where the fixing screws 42a can be operated.

[0046] 7, the pair of protrusion loose-fitting holes 43 are circular holes that open above the center of the joining member 40 in the vertical direction on the surface of the joining member 40 opposite the door 1 (front surface), and are provided at positions corresponding to the pair of connecting protrusions 31a of the handle 30. The pair of spring storage recesses 44 are cylindrical recesses that are provided coaxially so as to communicate with the pair of protrusion loose-fitting holes 43, and open on the surface of the joining member 40 facing the door 1 (rear surface).

[0047] As shown in FIG. 8 , a pair of connecting protrusions 31 a of the handle 30 are loosely fitted into the pair of protrusion loose-fitting holes 43 to allow tilting of the handle 30. The pair of connecting protrusions 31 a protrude into the pair of spring storage recesses 44 through the pair of protrusion loose-fitting holes 43, and springs 44 a, such as conical coil springs, are fitted on the pair of connecting protrusions 31 a. Joining screws 43 a are threadedly engaged with the pair of joining screw holes 31 b, and ring-shaped spring retainers 43 b are fixed to the tips of the pair of connecting protrusions 31 a. This prevents the pair of connecting protrusions 31 a from falling out of the pair of protrusion loose-fitting holes 43. The handle 30 is connected to the joining member 40 so as to be tiltable by a predetermined angle relative to the base 10 and the rotating body 20. The springs 44 a are disposed in a compressed state between the spring retainers 43 b and the bottoms of the pair of spring storage recesses 44, and function as biasing means that biases the handle 30 to its normal state.

[0048] 7, the locking screw hole 45 is formed on the surface of the joining member 10 facing the door 1, and overlaps with the through hole 13 of the base 10 in the direction along the rotation axis I0 of the rotating body 20. The locking screw hole 45 is an attachment portion into which a locking screw 13a, which is a locking member, is threaded and attached through the through hole 13. In this embodiment, the locking screw 13a is formed from a commercially available pan head screw or the like, and has a male thread portion that threads into the locking screw hole 45 and a head, with the head protruding into the through hole 13 when threaded into the locking screw hole 45. The head of the locking screw 13a is an engaging portion that engages with an engaged portion of one of the pair of bases 10.

[0049] The covering portion 46 covers the connecting screw 12a, which serves as a fastener, on the surface of the pair of bases 10 opposite the door 1. As shown in Fig. 7 , in the embodiment, the covering portion 46 is the portion of the pair of arm portions 40a of the joining member 10 that faces the connecting screw 12a. Because the covering portion 46 covers the connecting screw 12a on the surface of the pair of bases 10 opposite the door 1, the connecting screw 12a cannot be loosened with a screwdriver or the like unless the joining member 10 is removed from the rotating body 20, and the base 10 cannot be removed from the connecting shaft 60.

[0050] The installation procedure for the door handle structure according to the embodiment will be described below with reference to Figure 2. The installation of the door handle structure is generally performed in the following order, but steps 1 to 3 can be performed in any order, step 7 can be performed before step 8, and step 9 can be performed before step 10. The door handle structure can be removed in the reverse order of the installation procedure.

[0051] First step: The base 10, which is installed on the outside of the room, is connected to one end of each of the pair of connecting shafts 60 using the connecting screws 12a.

[0052] Step 2: Fit ring 23 onto shaft 21 of rotating body 20, pass shaft 21 through center hole 11 of base 10 installed on the outside of the room, fit spacer 24 onto the tip of shaft 21, and fit C-shaped retaining ring 25 into outer peripheral groove 21b, thereby attaching rotating body 20 installed on the outside of the room to base 10 installed on the outside of the room.

[0053] Third step: The connecting protrusion 31a of the handle 30 is loosely fitted into the protrusion loose fitting hole 43 of the connecting member 40 installed on the outside of the room, the spring 44a is fitted onto the connecting protrusion 31a inside the spring storage recess 44, and with the spring 44a compressed by the spring retainer 43b, the connecting screw 43a is screwed into the connecting screw hole 31b, and the handle 30 installed on the outside of the room is connected to the connecting member 40 installed on the outside of the room in a tiltable manner.

[0054] Step 4: The connecting member 40 is attached to the rotating body 20 by sliding it from the top of Figure 2 so that the mating protrusion 41 fits into the mating groove 22a, and while holding the handle 30 in an inclined position, the connecting member 40 is fixed to the rotating body 20 with the fixing screw 42a, thereby attaching the connecting member 40 installed on the outside of the room to the rotating body 20 installed on the outside of the room.

[0055] Step 5: In the connecting member 40 installed on the outside of the room, the locking screw 13a is screwed into the locking screw hole 45 of the connecting member 40 through the through hole 13 of the base 10, so that the head of the locking screw 13a protrudes inside the through hole 13.

[0056] Sixth step: The assembly assembled by the above-mentioned first to fifth steps is attached to the door 1 from the outside of the room, and the square core 50 is fitted into the fitting hole 21a of the rotating body 20 installed on the outside of the room.

[0057] Seventh step: In the same manner as the second step, the rotating body 20 to be installed inside the room is attached to the base 10 to be installed inside the room.

[0058] Eighth step: The base 10 installed on the inside of the room is connected to the other ends of the pair of connecting shafts 60 from the inside of the room using the connecting screws 12a.

[0059] Ninth step: In the same manner as the third step, the handle 30 installed on the interior side of the room is connected to the connecting member 40 installed on the interior side of the room.

[0060] Step 10: Using the same procedure as Step 4 above, the joining member 40 installed on the inside of the room is attached to the rotating body 20 installed on the inside of the room, completing the attachment of the door handle structure of the embodiment to the door 1.

[0061] As described above with reference to Figures 1 to 8, according to the door handle structure of the embodiment, at least one connecting shaft 60 connects the pair of bases 10 to each other and fixes them to the door 1. Therefore, by changing the length of the connecting shaft 60, the door handle structure can be installed on doors of various thicknesses.

[0062] In addition, connecting screws 12a, which are axial fasteners, connect the pair of bases 10 to both ends of the connecting shaft 60 from the surfaces of the pair of bases 10 opposite the door 1, and a pair of joining members 40 are adjacent to the bases 10 in a direction along the rotation axis I0 of the rotating body 20 and are attached to the rotating body 20 so as to be slidable in a direction intersecting the rotation axis I0 of the rotating body 20, and a cover portion 46 covers the connecting screws 12a on the surfaces of the pair of bases 10 opposite the door 1.

[0063] A locking screw hole 45 is provided on the surface of the pair of connecting members 40 facing the door 1, and for example, in the connecting member 40 on the outside side of the room, a locking screw 13a, which is a locking member, is attached to the locking screw hole 45 and engages with the engaged portion of the base 10 arranged on the outside side of the room, thereby locking the connecting member 40 so that it cannot slide.

[0064] Therefore, for example, on the outside of a room, even if the fixing screw 42a is loosened, the joining member 40 cannot be removed from the rotating body 20, the connecting screw 12a cannot be loosened with a screwdriver or the like, the base 10 cannot be removed from the pair of connecting shafts 60, and the handle 30 cannot be removed from the door 1, making it difficult to disable the lock and improving security. Also, by using the same parts for the base 10, rotating body 20, handle 30, and joining member 40 on both the inside and outside of a room and, for example, fitting the locking screw 13a into the locking screw hole 45 only on the outside of the room, it is possible to prevent the joining member 40 from being removed from the rotating body 20 as described above, and there is no need to manufacture two different parts with the same function, one for the inside and one for the outside of a room, thereby improving security while avoiding an increase in the number of parts to be manufactured.

[0065] 1 to 8, in the door handle structure according to the embodiment, the engaged portions of the pair of pedestals 10 are formed from the peripheral wall portions of the through-holes 13, the locking screw holes 45 overlap with the through-holes 13 in the direction along the rotation axis I0 of the rotating body 20, and the locking screws 13a are inserted into the locking screw holes 45 in one of the pair of pedestals 10 through the through-holes 13. Therefore, the peripheral wall portions of the through-holes 13 surround the locking screws 13a as locking members so that they cannot be seen from the outside, making it more difficult to remove the locking screws 13a, for example, from the outside of a room, further improving security.

[0066] 1 to 8, in the door handle structure according to the embodiment, locking screw hole 45, which serves as an attachment portion for the locking member, is formed of a female thread, and locking screw 13a, which serves as a locking member, has a male thread portion that screws into locking screw hole 45 and a head portion that serves as an engaging portion that engages with the engaged portion of base 10. Therefore, for example, a commercially available pan head screw can be used as locking screw 13a, and furthermore, the security can be improved while avoiding an increase in the number of parts to be manufactured.

[0067] As described with reference to Figures 1 to 8, in the door handle structure according to the embodiment, the handle 30 has a surface panel portion 31 and a peripheral panel portion 32, the surface panel portion 31 is positioned at a predetermined distance from the surface 1a of the door 1 so as to cover the base 10, the peripheral panel portion 32 is erected from the peripheral edge of the surface panel portion 31 in the direction of the door 1 so as to surround the base 10, and the joining member 40 arranged between the surface panel portion 31 and the base 10 joins the handle 30 to the base 10 so as to be tiltable between a normal state and an inclined state.

[0068] Therefore, the door handle structure can be installed on the door 1 so that essentially only the handle 30 is visible when not in operation, reducing the number of parts visible from the outside. Also, by tilting the handle 30 and forming a gap LG, for example below the handle 30, that allows at least the fingertip to fit in, the door 1 can be easily pulled open even when the height that the handle 30 protrudes from the surface 1a of the door 1 is kept small, making it easy to improve the design without sacrificing operability.

[0069] For example, in a prototype of the door handle structure according to the embodiment, the maximum protruding height of the handle 30 from the surface 1a of the door 1 when not in operation is in the range of 1.0 cm to 1.2 cm, which is not significantly different from the maximum protruding height of a typical case handle, making it even easier to improve the design.

[0070] 1 to 8, in the door handle structure according to the embodiment, the joining member 40 joins the handle 30 to the base 10 via the rotating body 20 so that the handle 30 can tilt, and also joins the handle 30 to the rotating body 20 so that the rotating body 20 can be rotated. Therefore, not only can the door 1 be pulled open, but also a rotation operation to operate the latch bolt 2 is possible. Even if the protruding height of the handle 30 is reduced to a maximum protruding height that is not significantly different from that of a typical case handle, by, for example, tilting the handle 30, it is possible to easily apply force when rotating the handle 30, and this facilitates improving the design without sacrificing operability.

[0071] Furthermore, by making the shape of the surface plate portion 31 rectangular or polygonal as in the above embodiment, it becomes easier to apply force to the peripheral plate portion 32 of the handle 30 without having to tilt the handle 30, and it is also possible to easily improve the design without sacrificing operability.

[0072] 1 to 8, in the door handle structure according to the embodiment, the spring 44a biases the handle 30 to the normal state. Therefore, the handle 30 is maintained in the normal state not only by gravity but also by the elastic force of the spring 44a. Therefore, if the handle 30 is made of metal, the handle 30 will vibrate when the door 1 is opened or closed, and noises such as rattles caused by collisions with other components can be prevented. This prevents the luxurious appearance from being audibly impaired, and makes it easier to improve the design.

[0073] 1 to 8, in the door handle structure according to this embodiment, the fixing screw holes 42 have one-end openings on the outer peripheral surface 40d of the joining member 40, and the outer peripheral surface 40d of the joining member 40 faces the peripheral plate portion 32 of the handle 30. When the handle 30 is in the normal position, the one-end openings of the fixing screw holes 42 are at least partially covered by the peripheral plate portion 32, and the fixing screw holes 42 are in an inoperable state where they cannot be operated. When the handle 30 is in the tilted position, the one-end openings of the fixing screw holes 42 are not covered by the peripheral plate portion 32, and the fixing screw holes 42 are in an operable state where the fixing screws 42a can be operated.

[0074] As described above, with the door handle structure according to the embodiment, when the handle 30 is in the normal state, the opening at one end of the fixing screw hole 42 is covered by the peripheral plate portion 32, and when the door handle is not being operated, the fixing screw hole 42 is not easily visible from the outside, making it easier to improve the appearance and further improve the design. In addition, the existence of the fixing screw 42a is also difficult to notice, and the fixing screw 42a cannot be loosened in the normal state, improving security.

[0075] Conversely, when the handle 30 is in the tilted state, the opening at one end of the fixing screw hole 42 is not covered by the peripheral plate portion 32, and the fixing screw hole 42 is in an operable state in which the fixing screw 42a can be operated. Therefore, the fixing screw 42a can be loosened or tightened by operating the handle as usual to open the door 1, making it easy to attach and remove the door handle structure.

[0076] Another method for enabling the fixing screws 42a to be loosened or tightened by the normal handle operation for opening the door 1 is to shift the positions of the pair of side notches 32b in the handle 30 up or down, thereby increasing the depth of the pair of side notches 32b.

[0077] If the positions of the pair of side notches 32b are shifted up or down and the notch depth of the pair of side notches 32b is made greater, for example, when the handle 30 is rotated clockwise, one of the side notches 32b will overlap with one end opening of one of the fixing screw holes 42, allowing one of the fixing screws 42a to be operated, and when the handle 30 is rotated counterclockwise, the other side notch 32b will overlap with one end opening of the other fixing screw hole 42, allowing the other fixing screw 42a to be operated, allowing both fixing screws 42a to be loosened or tightened.

[0078] However, the locking mechanism of a door handle structure having a latch bolt is often designed so that the handle can only be rotated in one direction from the non-operated state, and if the handle can only be rotated in one direction from the non-operated state, it is not possible to make both of the pair of fixing screws 42a operable by shifting the positions of the pair of lateral notches 32b up or down.

[0079] According to the door handle structure of the embodiment, when the handle 30 is in an inclined state, neither of the openings at one end of the pair of fixing screw holes 42 is covered by the peripheral plate portion 32, and both of the pair of fixing screw holes 42 are in an operable state where the fixing screws 42a can be operated. Therefore, even in a locking mechanism in which the handle 30 can only be rotated in one direction from the non-operated state, both of the pair of fixing screws 42a can be loosened or tightened, which expands the range of models to which the locking device can be applied.

[0080] It is also possible to shift one side notch 32b upward and the other downward, but this would result in asymmetry and would be undesirable from a design perspective, and the door handle structure of the embodiment makes it easier to further improve the design.

[0081] 1 to 8, the door handle structure according to the embodiment can be designed so that the handle 30 is essentially the only part visible from the outside when not in operation. The entire handle 30 can be tilted relative to the surface 1a of the door 1 to open the door 1, so the door handle structure can be designed so that the boundary between the movable and fixed parts is not visible from the outside. For example, if the upper half of the surface panel 31 is the fixed part and the lower half is the movable part, a boundary between the movable and fixed parts will be visible on the surface panel 31. However, according to the door handle structure according to the embodiment, the surface panel 31 can be formed from a single plate material, which allows the door handle structure to have an extremely simple design and facilitates further improvements in design.

[0082] 1 to 8, in the door handle structure according to the embodiment, the positioning protrusion 34, which serves as a positioning means, protrudes toward the door 1 from the surface of the front panel 31 facing the door 1. As shown in FIG. 8(a), when the handle 30 is in its normal state, the positioning protrusion 34 abuts against the joining member 40, positioning the handle 30 at a fixed position in the normal state. Therefore, even if the handle 30 has a square shape as in the embodiment and tilting of the handle 30 in the rotational direction is noticeable to people, the handle 30 can be positioned so that it does not tilt in the rotational direction, further facilitating improved design. Furthermore, by forming the positioning protrusion 34 into a conical shape whose diameter decreases toward the tip in the protruding direction, tilting of the handle 30 in the rotational direction can be more reliably eliminated, further facilitating improved design.

[0083] Next, another embodiment of the present invention will be described with reference to Fig. 9. Fig. 9(a) is a rear view showing a handle of the other embodiment. Fig. 9(b) is a side view showing a handle of the other embodiment. Fig. 9(c) is a cross-sectional view taken along line EE of Fig. 9(a).

[0084] In the above-described embodiment, the shape of the surface plate portion 31 of the handle 30 was substantially square, whereas the shape of the surface plate portion 31A of the handle 30A of this embodiment is substantially circular. Also, while the handle 30 of the above-described embodiment had a partition wall portion 33 that partitioned the storage space for the joining member 40, the handle 30A of this embodiment does not have a partition wall portion, and the entire space surrounded by the peripheral plate portion 32A becomes the storage space for the joining member 40. In other respects, this embodiment is similar in configuration to the above-described embodiment.

[0085] As described above with reference to Fig. 9, the shape of the surface panel is not limited to a square, but can be a circle as shown in Fig. 9, or a polygonal shape such as a diamond, rectangle, star, triangle, pentagon, or hexagon, allowing for a variety of designs. Furthermore, by forming a circular partition wall on the surface panel, for example, it is possible to accommodate a variety of surface panel shapes even if the shape of the connecting member 40 is standardized to a circular shape. Therefore, there is no need to manufacture a different connecting member 40 for each handle shape, and various handle shapes can be used while keeping manufacturing costs down, further facilitating improved design.

[0086] Next, still another embodiment of the present invention will be described with reference to Fig. 10 to Fig. 12. Fig. 10 is an external perspective view showing a door handle structure according to still another embodiment. Fig. 11 is an external perspective view showing another state of the door handle structure of Fig. 10. Fig. 12(a) is a front view showing a joining member of the door handle structure of Fig. 10. Fig. 12(b) is a cross-sectional view taken along line FF of Fig. 12(a).

[0087] As shown in Figures 10 to 12, the door handle structure of this embodiment differs from the above-described embodiments in that the handle 30A is a long, arc-shaped plate in appearance, does not have a front plate portion 31 and a peripheral plate portion 32 like the handle 30 of the above-described embodiments, and is provided with a cover 70 that covers the joining members, etc. The handle 30A is rotatable about a rotation axis that is substantially parallel to the surface 1a of the door 1. Other than these, the configuration of this embodiment is the same as that of the above-described embodiments.

[0088] 12, unlike the joining member 40 of each of the above-described embodiments, the joining member 40A of this embodiment does not have the protrusion loose-fitting hole 43 or the spring accommodating recess 44, the fixing screw hole 42 is formed not at the position of the orthogonal line 42b of each of the above-described embodiments but at the position of another orthogonal line 42c rotated, for example, by 45 degrees from the orthogonal line 42b, and a shaft hole 47 is formed at the position of the orthogonal line 42b of each of the above-described embodiments. The rest of the configuration of the joining member 40A is the same as that of the joining member 40 of each of the above-described embodiments.

[0089] With the cover 70 removed, a fixing screw 42a can be inserted or removed into the fixing screw hole 42, allowing the connecting member 40A to be fixed to or removed from the rotating body 20. The support shaft 35 of the handle 30A is rotatably inserted into the shaft hole 47 so that it cannot be removed unless the connecting member 40A is removed from the rotating body 20, for example, and the handle 30A is supported by the connecting member 40A so as to be rotatable about a rotation axis that is approximately parallel to the surface 1a of the door 1. In addition, by attaching a biasing means such as a torsion spring (not shown) to the support shaft 35, the handle 30A can be biased to the normal state shown in FIG.

[0090] As shown in FIG. 11, the cover 70 is detachably fastened to the joining member 40A by, for example, engaging a locking spring 48 provided on the joining member 40A with a spring engaging hole 71 provided in the cover 70.

[0091] As explained above with reference to Figures 10 to 12, according to the door handle structure of this embodiment, the handle 30A is semicircular arc-shaped like the handles in a normal case handle, and even though it is rotatable, it can be installed on doors of various thicknesses, and it is possible to improve security while avoiding an increase in the number of parts to be manufactured.

[0092] The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 12). However, the present invention is not limited to the above embodiments, and can be embodied in various forms without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0093] 1. Door 10...Pedestal 12a...Connecting screw (shaft-shaped fastener) 13...Through hole 13a...Latching screw (locking member) 20...Rotating body I0…Rotation axis center 30...Handle 40... Joint member 45...Lock screw hole (mounting part) 46...Cover 60...Connection shaft

Claims

1. a pair of plate-shaped bases each having an engaged portion and fixed to the door on both sides of the door; At least one connecting shaft that connects the pair of bases to each other and fixes them to the door, the pair of bases being connected to both ends by shaft-shaped fasteners on the surfaces of the pair of bases opposite the door; and a pair of rotating bodies rotatably supported by the pair of pedestals; a pair of handles rotatably connected to the pair of rotating bodies; A pair of plate-shaped connecting members that are adjacent to the base in a direction along the rotation axis of the rotating body, are attached to the rotating body so as to be slidable in a direction intersecting the rotation axis of the rotating body, and connect the handle to the rotating body, the pair of connecting members having a covering portion that covers the fastener on a surface of the pair of connecting members opposite the door, and having an attachment portion for a locking member on a surface facing the door, the locking member engaging with the engaged portion of one of the pair of connecting members, and locking the connecting members so that they cannot slide. A door handle structure comprising:

2. the engaged portions of the pair of pedestals are formed by peripheral wall portions of through-holes that penetrate the pedestals in a thickness direction, the mounting portion of the locking member overlaps with the through-hole in a direction along the rotation axis of the rotating body, 2. The door handle structure according to claim 1, wherein the locking member is attached to the attachment portion of one of the pair of joining members through the through hole.

3. The mounting portion of the locking member is formed of a female screw, 3. The door handle structure according to claim 1, wherein the locking member has a male threaded portion that is threadedly engaged with the female thread of the mounting portion, and an engaging portion that is engaged with the engaged portion of the one of the pair of bases.

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