Door device

Abstract

To provide a door device 1 capable of ensuring a three-dimensional vibration isolation function in vertical and horizontal directions with a single type of vibration isolating member 10 when connecting an upper frame part 4 constituting the door device to a hanging metal fitting 9 on the building frame side via connection means T that includes a vibration isolating member 10.SOLUTION: The connection means T includes: a vibration isolating member 10; a first connection metal fitting 11 with a lower piece 11b abutting on the bottom face 10a of the vibration isolating member 10 and a vertical piece 11a fastened firmly to a hanging metal fitting vertical piece 9a; a second connection metal fitting 12 with an upper piece 12b abutting on the upper face 10b of the vibration isolating member 10 and a lower piece 12c attached to an upper frame 4; and fastening means 14 for connecting the vibration isolating member 10 to the first connection metal fitting lower piece 11b and the second connection metal fitting upper piece 12b. A nut 14b protruding downward from the first connection metal fitting lower piece 11b penetrates through a through hole 9e formed in a hanging metal fitting lower piece 9c in a loose fit manner to connect the hanging metal fitting lower piece 9c and the first connection metal fitting lower piece 11b while ensuring freedom.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to the technical field of door devices that are installed at the entrances of buildings such as buildings and houses. [Background technology]

[0002] Generally, door devices that allow a door body to open and close in the left-right direction are installed to open and close entrances to buildings such as buildings and houses. Among these door devices, a so-called top-hung automatic door device is known, in which an electric opening and closing mechanism (opening machine, engine) is arranged in the upper frame that forms the entrance, and the upper edge of the door body is suspended from a guide rail arranged in the upper frame so that it can move freely in the left-right direction, and the door body is automatically opened and closed by the operation of the opening and closing mechanism. When using such a top-hung automatic door system, vibrations generated by the opener / closer attached to the upper frame are transmitted to the main body via the angle members, causing unpleasant vibrations and noise that can have a negative impact on people. To address this issue, a system has been proposed in which the main body member and the upper frame are connected via vibration-isolating material to prevent the vibrations generated by the opener / closer from being transmitted to the main body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 2515664 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional system, the vibration-damping material directly fastens the connecting fittings on the main body side and the connecting fittings on the upper frame side via bolts, so while it can ensure a high vibration absorption effect for vibrations in the direction of the bolt's threads, it has a low vibration absorption effect in directions perpendicular to the threads.As a result, the system has a structure in which vibrations in the up and down (vertical) and horizontal (lateral) directions are damped using vibration-damping materials that are provided separately, which creates problems such as a large number of parts and a complex structure, and these are the issues that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been made in view of the above-mentioned circumstances and with the aim of solving these problems. The invention of claim 1 relates to a door device in which an upper frame portion disposed at the upper edge of an entrance portion through which a door body moves for opening and closing is connected to a hanging hardware on a frame side via a connecting means, the hanging hardware comprising an upper piece portion connected to a frame side member, a vertical piece portion bent from the upper piece portion, and a lower piece portion bent from the vertical piece portion and connected to the upper frame side, the connecting means being an L-shaped member and including a vibration-proof material and a lower piece portion a first connecting fitting whose upper piece abuts the underside of the vibration-damping material and whose vertical piece is fastened to the vertical piece of the hanging fitting; a second connecting fitting which is U-shaped and whose upper piece abuts the top of the vibration-damping material and whose lower piece is attached to the upper frame side that suspends the door body; and fastening means for fastening the vibration-damping material to the lower piece of the first connecting fitting and the upper piece of the second connecting fitting, wherein the fastening means is characterized in that a bolt head or nut protruding downward from the lower piece of the first connecting fitting passes loosely through the lower piece of the hanging fitting. The invention of claim 2 is the door device according to claim 1, characterized in that a through hole is formed in the lower piece of the hanging metal fitting, through which a bolt head or a nut passes loosely. The invention of claim 3 is a door device according to claim 2, characterized in that the through hole opens through a communicating groove that is narrower than the outer diameter of the bolt head or nut and wider than the outer diameter of the threaded portion of the fastening means. The invention of claim 4 is a door device described in any one of claims 1 to 3, characterized in that the first connecting fitting vertical piece and the hanging fitting vertical piece are stacked in a vertical and horizontal crossing pattern and a pair of long holes are formed on both the left and right sides of the vibration-damping material, through which the screw portions of the fastening means for tightening the first connecting fitting vertical piece and the hanging fitting vertical piece pass, and the second connecting fitting vertical piece is narrowed by notching both the left and right edge portions so that the long holes stacked in a crossing pattern can be seen from the second connecting fitting vertical piece side. The invention of claim 5 is a door device as described in claim 4, characterized in that the notches formed on both left and right end edges of the second connecting fitting vertical piece are inclined so that the upper piece side is narrow and the lower piece side is wide. The invention of claim 6 is a door device described in any one of claims 1 to 5, characterized in that bolt holes for connecting to the upper frame portion are formed in the lower piece of the second connecting fitting, arranged on both the left and right sides of the vibration-damping material, and the lower piece of the first connecting fitting has both left and right edge portions cut out to make it narrow so that the bolt holes formed in the lower piece of the second connecting fitting can be seen from the side of the lower piece of the first connecting fitting. [Effects of the Invention]

[0006] According to the invention of claim 1, when the upper frame portion of the door device is connected to the suspension fitting on the frame side via a connecting means, the connecting means is configured to include a vibration-damping material, an L-shaped first connecting fitting whose lower piece abuts the lower surface of the vibration-damping material and whose vertical piece is fastened to the vertical piece of the suspension fitting, a U-shaped second connecting fitting whose upper piece abuts the upper surface of the vibration-damping material and whose lower piece is attached to the upper frame portion that suspends the door body, and fastening means for fastening the vibration-damping material to the lower piece of the first connecting fitting and the upper piece of the second connecting fitting, The fastening means is a bolt head or nut that protrudes downward from the lower piece of the first connecting fitting and passes through the lower piece of the hanging fitting in a loose fit.As a result, the vibration-damping material interposed between the lower piece of the first connecting fitting and the upper piece of the second connecting fitting is supported in a free, unanchorable state with the lower piece of the first connecting fitting abutting the lower piece of the hanging fitting, thereby providing vibration-damping function in three dimensions.This eliminates the need to provide separate vibration-damping materials in the vertical and horizontal directions, reducing the number of parts and simplifying the structure. By adopting the invention of claim 2, a through hole is formed in the lower piece of the hanging fitting through which the bolt head or nut passes loosely, and support can be achieved in a free state without fastening, with the lower piece of the first connecting fitting abutting against the lower piece of the hanging fitting, ensuring a connection without the bolt head or nut protruding from the lower piece of the first connecting fitting being obstructed by the lower piece of the hanging fitting. By adopting the invention of claim 3, the through hole into which the bolt head or nut fits loosely opens via a communicating groove that is narrower than the outer diameter of the bolt head or nut and wider than the outer diameter of the threaded portion of the fastening means.As a result, the bolt head or nut can be easily assembled into the through hole by passing the threaded portion through the communicating groove, and after assembly, the bolt head or nut is prevented from coming loose by the communicating groove, allowing for secure installation. By adopting the invention of claim 4, the first connecting fitting vertical piece and the hanging fitting vertical piece are stacked in a crossing pattern in the vertical direction, and a pair of long holes for passing the threaded portions of the fastening means for fastening the first connecting fitting vertical piece and the hanging fitting vertical piece are formed on both the left and right sides of the vibration-damping material, and the second connecting fitting vertical piece is formed narrow with notches cut out on both the left and right edges so that the long holes stacked in a crossing pattern can be seen from the second connecting fitting vertical piece side.As a result, the first connecting fitting vertical piece and the hanging fitting vertical piece can be easily connected in a positioned manner, and when the long holes crossing in a crossing pattern are tightened with bolts, the notches formed in the second connecting fitting vertical piece can be used without interference, improving workability. By adopting the invention of claim 5, the notches formed on both the left and right edge portions of the vertical piece of the second connecting fitting are inclined, narrow on the upper piece side and wide on the lower piece side, so that it is possible to maintain strength as much as possible while forming the notches. By adopting the invention of claim 6, bolt holes for connecting the lower piece of the second connecting fitting to the upper frame portion are formed on both the left and right sides of the vibration-damping material, while the lower piece of the first connecting fitting has both left and right edges cut out to make it narrow so that the bolt holes formed in the lower piece of the second connecting fitting can be seen from the lower piece of the first connecting fitting.As a result, the bolt holes for connecting the lower piece of the second connecting fitting to the upper frame portion can be seen from the cutouts formed in the lower piece of the first connecting fitting, making it easier to perform tightening work using bolts and improving workability. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a schematic front view of the door device with the upper frame portion open. [Figure 2] FIG. 2 is a front view of the open upper frame portion of the door device. [Figure 3] FIG. 2 is a cross-sectional side view of the door device. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 10 is a side view showing the state in which the connecting means is attached to the upper frame portion. [Figure 8] 1A, 1B, 1C, and 1D are a plan view, a front view, a side view, and a cross-sectional side view of the connecting means connected to the hanging hardware. [Figure 9] FIG. 10 is a perspective view of the connecting means when connected to the hanging hardware. [Figure 10] This shows the procedure for attaching the connecting means to the hanging hardware, where (A) and (B) are side views and plan views of the main parts showing the state before attachment, (C) and (D) are side views and plan views of the main parts showing the state in which the threaded portion of the fastening means is guided into the communicating groove, and (E) and (F) are side views and plan views of the main parts showing the state after attachment. [Figure 11] (A) (B) (C) (D) are a plan view, a front view, a side view, and a bottom view of the connecting means. [Figure 12] (A)(B)(C) are a plan view, a front view, and a side view of the hanging hardware. [Figure 13] 1A, 1B, and 1C are a plan view, a front view, and a side view of the first connecting fitting. [Figure 14] (A)(B)(C)(D) are a plan view, a front view, a bottom view, and a side view of the second connecting fitting. [Figure 15] (A)(B) is a plan view and a side view of the mounting bolt showing the state before the auxiliary member is assembled into the mounting bolt, (C)(D) is a plan view and a side view showing the state after the auxiliary member has been assembled into the mounting bolt, and (E)(F) is a plan view and a side view showing the state after the auxiliary member has been assembled into the upper frame portion. [Figure 16] 10(A) and 10(B) are a plan view and a front view of the auxiliary member. [Figure 17] A side view showing the state in which a lifting bracket is attached to the upper frame portion. [Figure 18] (A)(B)(C) are a front view, a plan view, and a side view of the lifting hardware. [Figure 19] 10(A), (B), and (C) are a bottom view, a front view, and a side view of another example of a hanging fitting, and (D) is a side view showing the state in which a connecting fitting is attached to the other example of a hanging fitting. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes an electric door system (automatic door system) that is installed to open and close an indoor / outdoor doorway E in the front-to-rear direction. The door system 1 includes a door body 2 that moves left and right to open and close the doorway E. The door body 2 is of an overhead hanging type. A hanger roller 3 attached via a bracket 3a extending upward from an upper frame 2a of the door body 2 runs on a guide rail (hanger rail) 5 that is installed inside an upper frame 4 provided at the upper edge of the doorway E, thereby opening and closing the doorway E. The door body 2 is further connected to a transmission belt 6b that is wound around an output pulley 6a of an electric opening / closing device (opening / closing device, engine) 6 installed inside one end of the upper frame 4 in the left-to-right direction. The door body 2 automatically moves left and right in response to the forward and reverse movement of the opening / closing device 6 to open and close the doorway E. Since these configurations are all conventional, further description of these configurations will be omitted. Although the door device 1 in this embodiment is a single-sliding type with a single door body 2, it goes without saying that the present invention can also be implemented in a door device with a double-sliding type. Also, although this embodiment is described as opening and closing the indoor and outdoor entrances E, it can of course also be implemented in a door device that opens and closes indoor and outdoor entrances.

[0009] The upper frame portion 4 is integrally formed as a molded member extruded from a metal material such as aluminum, and is formed in a U shape by an upper spanning piece 4a and two leg pieces 4b, 4c inside and outside the door, and is configured to accommodate various components and devices provided in the door device 1, such as the aforementioned hanger rail 5 and opening / closing mechanism 6. A lower piece 4d extends (bends) from the lower edge of each of the indoor and outdoor leg pieces 4b, 4c toward the inside in the indoor / outdoor direction (front-to-back direction), and the upper frame 2a of the door body 2 is fitted loosely between the opposing tip edges of the lower piece pieces 4d (the opposing space) to guide the left-right movement of the door body 2. Moreover, in this embodiment, the indoor-side leg piece 4b is supported (locked) so as to be swingable (openable and closable) in the indoor / outdoor direction, and is configured to serve as an inspection plate for performing maintenance on the opening / closing mechanism 6 and other components disposed within the upper frame 4.

[0010] Furthermore, an upper piece portion 4e is formed on the upper frame portion 4 with a gap above the spanning piece portion 4a, and an insertion groove 4f is formed in the upper piece portion 4e with an open upper side and located at the middle position in the indoor / outdoor direction (the central position in this embodiment). The insertion groove 4f is configured so that the bolt head 7a of the mounting bolt 7, which constitutes the bolt tightening means for fastening the upper frame portion 4 to the body side member 8 via the connecting means T described below, can be inserted into the insertion groove 4f in a manner that allows it to move freely in the left-right direction (slide freely in the left-right direction) without coming loose. Specifically, the fitting groove 4f has a groove-like portion 4g that protrudes in both the upward and downward directions relative to the upper piece portion 4e, is bent inward in the indoor / outdoor direction from the upper edge of the groove-like portion 4g, and is configured to have an opening piece portion 4h that narrows the groove opening width of the fitting groove 4f so that the threaded portion 7b of the mounting bolt 7 passes through in a loose fit, but the bolt head 7a is locked and does not slip out. The mounting bolt 7, with its bolt head 7a inserted into the insertion groove 4f, is incorporated so as to be movable left and right, with the tip edge (upper edge) of the threaded portion 7b protruding upward as a free end (free end), and is configured to be connected to connecting means T as described below.

[0011] As mentioned above, a body side member (frame member, angle member, etc.) 8 is arranged above the entrance / exit section E, and in this embodiment, a hanging fitting 9 is connected to the body side member 8 as a further body side component member, and the upper frame section 4 is connected to the hanging fitting 9 via a connecting means T equipped with a vibration-damping material 10 formed in a cylindrical shape using a rubber elastic material. The hanging hardware 9 is Z-shaped and comprises a vertical piece 9a, an upper piece 9b extending from the vertical piece 9a toward the indoor side, and a lower piece 9c extending toward the outdoor side. Incidentally, any hanging hardware 9 can be used as long as it can be connected to the frame-side member 8, and it goes without saying that a U-shaped one can also be used. On the other hand, the connecting means T comprises a first connecting fitting 11 which is L-shaped and has a vertical piece portion 11a and a lower piece portion 11b, and a second connecting fitting 12 which is U-shaped and has a vertical piece portion 12a facing the outside of the room and has an upper piece portion 12b and a lower piece portion 12c, and further the vibration-damping material 10 is interposed between the lower piece portion 11b of the first connecting fitting and the upper piece portion 12b of the second connecting fitting.

[0012] More specifically, the upper piece 9b of the hanging fitting 9 is fastened (fastened, bolted) to the body side member 8 via a bolt 8b. On the other hand, the first connecting fitting 11 constituting the connecting means T is arranged in a stacked state with its vertical piece 11a abutting against the hanging fitting vertical piece 9a from the outside of the room and its lower piece 11b abutting against the hanging fitting lower piece 9c from above, and the hanging fitting vertical piece 9a and the first connecting fitting vertical piece 11a are fastened together via a bolt 9d, thereby connecting the connecting means T to the hanging fitting 9. In this case, the hanging fitting 9 has a two-plate structure, with the vertical piece 11a and lower piece 11b of the first connecting fitting 11 abutting against the vertical piece 9a and lower piece 9c in a stacked manner, thereby providing reinforcement. In contrast, the second connecting fitting 12 has its upper piece portion 12b arranged between the stacked portion of the lower hanging fitting lower piece portion 9c and the first connecting fitting lower piece portion 11b and the upper body side member 8, and its lower piece portion 12c arranged below the stacked portion of the hanging fitting lower piece portion 9c and the first connecting fitting lower piece portion 11b, and the second connecting fitting lower piece portion 12c is connected to the upper frame portion 4 as described below.

[0013] On the other hand, as described above, the vibration-damping material 10 has a cylindrical shape, and the lower surface portion 10a and the upper surface portion 10b are integrally connected to the upper and lower surfaces of the vibration-damping material 10 (for example, by adhesive bonding or baking).However, the vibration-damping material 10 of this embodiment is provided with fastening means 14 equipped with bolts 14a for fastening the lower surface portion 10a to the lower piece portion 11b of the first connecting fitting and the upper surface portion 10b to the upper piece portion 12b of the second connecting fitting. Specifically, a nut portion 14e into which the bolt 14a is screwed is provided on the upper surface portion 10b in a state where it is embedded in the upper part of the vibration-damping material 10, and a screw portion 14c is provided on the lower surface portion 10a in a state where it protrudes downward from the lower surface portion 10a. The vibration-damping material 10 is attached in a sandwiched state between the first and second connecting fittings 11, 12, with the upper surface portion 10b of the second connecting fitting upper piece portion 12b abutting from above and the lower surface portion 10a of the first connecting fitting lower piece portion 11b abutting from below, and the bolt 14a inserted from the upper surface portion 12b of the second connecting fitting being screwed and tightened into the nut portion 14e, while the nut 14b is screwed and tightened into the threaded portion 14c that passes through the bolt hole 11c provided in the lower surface portion 11b of the first connecting fitting.By using the above-mentioned structure, the vibration-damping material 10 is sandwiched and interposed in a state that allows it to elastically deform in three-dimensional directions, that is, in the vertical and horizontal directions (front-to-back and left-to-right directions). It goes without saying that the vibration-damping material 10 can also be mounted upside down compared to the embodiment described above, between the first and second connecting fittings 11, 12. When mounted upside down, the bolt head 14d of the bolt 14a will protrude downward from the lower piece 11b of the first connecting fitting. Furthermore, the fastening means 14 for fastening the vibration-damping material 10 between the first and second connecting fittings 11, 12 is not limited to the structure described above, and may be configured, for example, to include a bolt that passes through the vibration-damping material 10 from the upper piece 12b of the second connecting fitting and extends from the lower piece 11b of the first connecting fitting, and a nut that screws onto the extended bolt; in other words, the present invention can be implemented with a structure in which the bolt 14a and threaded portion 14c in this embodiment are integrated. In this case, in this embodiment, the member to which the threaded portion 14c of the fastening means 14 is fastened is the lower piece 11b of the first connecting fitting, not the lower piece 9c of the hanging fitting, and further, these lower pieces 11b, 9c are not directly fastened to each other, and can be attached separately above and below as necessary (made possible by the elongated hole 9g), thereby ensuring that the vibration-damping material 10 can perform its vibration-damping function in three dimensions.

[0014] When the connecting means T is connected to the hanging fitting 9 as described above in a state in which the vibration-damping material 10 is tightly attached between the first connecting fitting lower piece 11b and the second connecting fitting upper piece 12b via the fastening means 14, the nut 14b and threaded portion 14c protruding downward from the first connecting fitting lower piece 11b will interfere with the hanging fitting lower piece 9c. To avoid this interference, the hanging fitting lower piece 9c has a through hole 9e formed therein that is wider than the diameter of the nut 14b protruding from the first connecting fitting lower piece 11b so that the nut 14b can fit loosely. Furthermore, the through hole 9e is opened up to the outer edge of the lower piece 9c of the hanging fitting via a communicating groove 9f, and in this case the groove width X of the communicating groove 9f is narrower than the diameter Y of the nut 14b (= the diameter of the bolt head 14d) (Y>X), so that the movement of the nut 14b is restricted, but is wider than the diameter Z of the threaded portion 14c (X>Z), so that the movement of the threaded portion 14c guided by the communicating groove 9f is permitted.

[0015] As described above, the connecting means T is integrated via fastening means 14 in a state in which the upper piece portion 12b of the second connecting fitting abuts against the upper surface portion 10b of the vibration-damping material 10, and the lower piece portion 11b of the first connecting fitting abuts against the lower surface portion 10a.When the connecting means T is connected to the upper frame portion 4 as described below, the first connecting fitting vertical piece portion 11a and the hanging fitting vertical piece portion 9a are tightened and attached via bolt 9d, thereby connecting the upper frame portion 4 to the hanging fitting 9, which is a body side member, via the connecting means T. In this case, the upper frame portion 4 is lifted as described below, and the first connecting fitting vertical piece portion 11a is fastened to the hanging fitting vertical piece portion 9a via a bolt 9d. At this time, the nut 14b and screw portion 14c protruding downward from the first connecting fitting lower piece portion 11b of the fastening means 14 must be passed through the through hole 9e formed in the hanging fitting lower piece portion 9c.

[0016] Therefore, in this embodiment, as shown in Figure 10, the upper frame portion 4 is lifted slightly above the mounting position, and the screw portion 14c protruding from the nut 14b is guided into the connecting groove 9f and moved to the through hole 9e, and then the upper frame portion 4 is moved downward to insert the nut 14b into the through hole 9e.In this way, the upper frame portion 4 can be easily set on the hanging fitting 9, and then the first connecting fitting vertical piece 11a is tightened to the hanging fitting vertical piece 9a via the bolt 9d, thereby connecting the upper frame portion 4 to the hanging fitting 9 via the connecting means T. In this case, the nut 14b that has passed through the through hole 9e is prevented from coming off (retained) through the narrow communicating groove 9f, thereby enabling a secure connection.

[0017] Next, the structure of the fastening attachment between the first connecting fitting vertical piece 11a and the hanging fitting vertical piece 9a via the bolt 9d will be described in detail. The hanging fitting vertical piece 9a has elongated vertical holes 9g formed on both left and right sides that sandwich the vibration-damping material 10 in the left-right direction, while the first connecting fitting vertical piece 11a has elongated horizontal holes 11d formed on both left and right sides that sandwich the vibration-damping material 10 in the left-right direction. When the vertical pieces 9a, 11a of the hanging fitting 9 and the first connecting fitting 11 are abutted (stacked) against each other from the indoor / outdoor direction, the elongated holes 9g, 11d face each other and intersect vertically and horizontally, and by passing a bolt 9d through this intersection and tightening it, the hanging fitting 9 and the first connecting fitting 11 are connected together, in other words, the hanging fitting 9, which is the frame-side member, is connected to the connecting means T in a positioned manner. In this way, the hanging fitting 9 and the first connecting fitting 11 are configured so that the vertical pieces 9a, 11a are fastened together via bolt 9d, while the lower pieces 9c, 11b are simply stacked together, and the fastening means 14 for fastening the vibration-damping material 10 to the first and second connecting fittings 11, 12 is also structured so that it does not interfere with (is not fastened to) the hanging fitting 9.As a result, the vibration-damping material 10 is configured to ensure the three-dimensional vibration-damping function described above.

[0018] When such a bolt 9d is used to fasten the first connecting member vertical piece 11a and the hanging member vertical piece 9a, there is a risk that the second connecting member vertical piece 12a will get in the way of the fastening work. Therefore, in the present embodiment, the second connecting member vertical piece 12a is formed with cutouts 12d cut out on both the left and right sides so that the vibration-damping material 10 is sandwiched in the left-right center (middle portion), and the cutouts 12d are formed in the upper half above the first connecting member lower piece 11b, including the second connecting member upper piece 12b, and are composed of a lower half 12e where the first connecting member lower piece 11b is wide in the left-right direction and is formed in an inclined shape that narrows toward the top, and an upper half 12f set to approximately the width of the vibration-damping material 10. By configuring it in this manner, the intersecting long holes 9g, 11d can be seen through the cutout portion 12d from the side of the second connecting fitting vertical piece portion 12a, thereby improving the workability when installing the connecting means T.

[0019] Furthermore, the second connecting fitting 12 that constitutes the connecting fitting T has its lower piece 12c connected to the upper frame portion 4. In this case, a pair of bolt holes 12g are formed on the left and right sides of the lower piece 12c of the second connecting fitting, with the vibration-damping material 10 sandwiched in the left-right central portion, and the threaded portion 7b of the mounting bolt 7 that is attached and engaged in the insertion groove 4f of the upper frame portion 4 described above is inserted through and assembled into the bolt hole 12g. The lower piece 11b of the first connecting fitting has a cutout portion 11e formed therein so that the bolt hole 12g can be seen, and as will be described later, this is configured to improve workability when connecting the upper frame portion 4 to the lower piece 12c of the second connecting fitting.

[0020] Next, the structure for attaching the upper frame portion 4, to which the mounting bolts 7 are attached as described above, to the second connecting fitting 12, which is a component of the connecting means T, will be described in detail with reference to, for example, Figures 4, 7 and 15. As described above, the upper frame portion 4 has an insertion groove 4f formed in the upper piece portion 4e to allow the bolt head 7a of the mounting bolt 7 to be inserted into the upper piece portion 4e so that it can move freely in the left-right direction, and the insertion groove 4f has an opening piece portion 4h that protrudes slightly above the upper piece portion 4e.The upper piece portion 4e configured in this manner further has a pair of insertion grooves 4j formed at a position spaced apart in the front-to-back direction from the insertion groove 4f, with the extension piece portion 4i extending in an inverted L shape and opening on the inside in the indoor / outdoor direction.The insertion grooves 4j are configured so that the inner surface of the upper groove (the lower surface of the extension piece portion 4i) is higher than the upper surface of the opening of the insertion groove 4f (the upper surface of the opening piece portion 4h) by the thickness of the auxiliary member 13 described later.

[0021] The upper frame portion 4 is attached by fitting the threaded portion 7b of the mounting bolt 7, with the bolt head 7a fitted into the fitting groove 4f, into the bolt hole 12g formed in the lower piece 12c of the second connecting fitting, and tightening with the nut 7c. In this case, an attachment structure using an auxiliary member 13 is adopted to ensure strength at the attachment site and to position the temporary holding state. The auxiliary member 13 is made of a rectangular plate material having a thickness roughly corresponding to the difference in height between the inner surface of the upper groove of the aforementioned insertion groove 4j and the inner surface of the opening of the fitting groove 4f, and has a through hole 13a formed in the middle part into which the threaded portion 7b of the mounting bolt 7 fits loosely, and its length is set to a length that allows both end edge portions 13b to be inserted and engaged in the pair of front and rear insertion grooves 4j, and further has cutout portions 13c formed in a pair of corner portions located diagonally opposite both end edge portions 13b.

[0022] Then, with both end edges 13b of auxiliary member 13 facing left and right so as not to interfere with insertion groove 4j, the threaded portion 7b of the mounting bolt 7 fitted into the fitting groove 4f is inserted through the through-hole 13a, and auxiliary member 13 is rotated around the threaded portion 7b as a fulcrum so as to face forward and backward, thereby inserting the end edge 13b into the insertion groove 4j, thereby attaching auxiliary member 13 to the upper frame portion 4 in a manner that prevents it from slipping out, and thereby temporarily positioning and holding the mounting bolt 7. In this case, the mounting bolt 7 is set in the mounting position beforehand. With the auxiliary member 13 attached to the upper frame portion 4 in this manner, the nut 7c is tightened onto the threaded portion 7b protruding from the insertion groove 4f, and the upper frame portion 4 is thus fastened together with the auxiliary member 13 by tightening the nut 7c, and the both end edge portions 13b of the auxiliary member 13 are inserted and attached into the insertion groove 4j, thereby forming an attachment structure with excellent strength. Incidentally, in this embodiment, the auxiliary member 13 can be tightly attached by screwing the screw 13d inserted from the tip of one end of the auxiliary member 13 in the attachment position into tight contact with the upper piece portion 4e. Furthermore, the auxiliary member 13 may of course be attached in an arc shape rather than a flat plate shape so as to be elastically deformable.

[0023] Furthermore, in this embodiment, when connecting and attaching the upper frame 4 to the lifting fitting 9 via the connecting means T, the upper frame 4 is lifted and assembled using a lifting means such as a sling, but in this case, the lifting can be performed with the lifting fitting 15 attached to the upper frame 4 in advance and a locking hook (not shown) on the lifting means engaged with the locking hole 15b formed in the vertical piece 15a of the lifting fitting 15. In this case, the attachment of the lifting fitting 15 to the upper frame 4 is convenient, as in the case of attaching the connecting means T to the upper frame 4, because the lower piece 15c of the lifting fitting 15 can be positioned and firmly attached to the upper frame 4 using the mounting bolt 7 with the bolt head 7a fitted in the fitting groove and the auxiliary member 13. By configuring the upper surface of the upper frame 4 as described above, when there are attachment members for attaching the connecting means T or the lifting hardware 15 to the upper surface of the upper frame, it is possible to configure it so that it can be attached using the auxiliary member 13 in the same manner as described above.

[0024] In the present embodiment configured as described above, the upper frame portion 4 of the door device 1 is connected to the hanging fitting 9 provided as a frame-side member via connecting means T. In this case, the connecting means T includes a vibration-proof material 10, an L-shaped first connecting fitting 11 whose lower piece 11b abuts against the lower surface 10a of the vibration-proof material 10 and whose vertical piece 11a is fastened to the vertical piece 9a of the hanging fitting, a U-shaped second connecting fitting 12 whose upper piece 12b abuts against the upper surface 10b of the vibration-proof material 10 and whose lower piece 12c is attached to the upper frame portion 4 side that suspends the door body 2, and fastening means 14 for fastening the vibration-proof material 10 to the lower piece 11b of the first connecting fitting and the upper piece 12b of the second connecting fitting. The fastening means 14 is configured such that a nut 14b protruding downward from the first connecting fitting lower piece 11b passes loosely through a through hole 9e provided in the hanging fitting lower piece 9c. As a result, the vibration-damping material 10 interposed between the first connecting fitting lower piece 11b and the second connecting fitting upper piece 12b is supported in a free state with the first connecting fitting lower piece 11b abutting against the hanging fitting lower piece 9c but not fastened, and is able to exert vibration-damping function in three dimensions including not only the vertical direction but also the horizontal direction. This eliminates the need to provide separate vibration-damping materials for vibration damping in the vertical and horizontal directions, reducing the number of parts and simplifying the structure.

[0025] In this case, a through hole 9e is formed in the lower piece 9c of the hanging fitting, through which the nut 14b passes loosely, so that the first connecting fitting lower piece 11b can be supported in a free, untightened state in which it abuts against the lower piece 9c of the hanging fitting, and the nut 14b protruding from the first connecting fitting lower piece 11b can be reliably connected without being obstructed by the lower piece of the hanging fitting. Furthermore, the through hole 9e into which the nut 14b fits loosely opens via a communicating groove 9f that is narrower than the outer diameter Y of the nut 14b and wider than the outer diameter Z of the threaded portion 14c. As a result, the nut 14b can be easily fitted loosely into the through hole 9e by passing the threaded portion 14c through the communicating groove 9f, and after the fitting, the nut 14b is prevented from coming loose by the narrow communicating groove 9f, ensuring secure installation.

[0026] Furthermore, the first connecting fitting vertical piece 11a and the hanging fitting vertical piece 9a have a pair of long holes 9g, 11d formed on both the left and right sides of the vibration-damping material 10, which are stacked in a vertical and horizontal intersecting pattern and through which the bolt 9b for fastening the two together can be passed. On the other hand, the second connecting fitting vertical piece 12a is narrow and has cutouts 12d formed on both the left and right edges so that the intersecting stacked long holes 9g, 11d can be seen from the second connecting fitting vertical piece 12a side. As a result, the first connecting fitting vertical piece 11a and the hanging fitting vertical piece 9a can be easily connected in a positioned manner, and when the stacked intersecting long holes 9g, 11d are tightened with the bolt 9d, this can be done without being hindered by the cutouts 12d formed in the second connecting fitting vertical piece 12a, thereby improving workability. Furthermore, the notches 12d formed at both left and right edge portions of the second connecting fitting vertical piece 12a are inclined, with the upper piece being narrower and the lower piece being wider, so that strength can be maintained as much as possible while forming the notches 12d.

[0027] In addition, bolt holes 12g for connecting the upper frame portion 4 to the lower piece portion 12c of the second connecting fitting are formed in a state where they are arranged on both the left and right sides of the vibration-damping material 10.In this case, the lower piece portion 11b of the first connecting fitting is narrowed by notches 11e formed on both the left and right edges so that the bolt holes 12g can be seen from the lower piece portion 11b of the first connecting fitting.As a result, the bolt holes 12g for connecting the upper frame portion 4 to the lower piece portion 12c of the second connecting fitting can be seen from the notches 11e formed in the lower piece portion 11b of the first connecting fitting, making it easier to tighten the mounting bolts 7 and improving workability. [Industrial Applicability]

[0028] The present invention can be used as a door device that is installed at the entrance of a building such as a building or a house. [Explanation of symbols]

[0029] 1 Door device 2 door body 4 Upper frame 4e Upper piece 4f Inset groove 4g Concave groove part 4h Opening piece 4j Insertion groove 7 Mounting bolts 7a Bolt head 7b Threaded part 7c Nut 9 Hanging hardware 9a Vertical piece 9c Lower piece 9g long hole 10 Vibration isolation material 10a Bottom part 10b Top part 11 First connecting fitting 11a Vertical piece 11b Lower piece 11c Bolt hole 11d long hole 11e Cutout 12 Second connecting fitting 12a Vertical piece 12b Upper piece 12c Lower piece 12d cutout 13 Auxiliary parts 13a Through hole 13b Both edge portions 13c Cutout 14 Fastening means 14a bolt 14b Nut 14c Threaded part 14d bolt head 14e Nut part Entrance E T Connection means

Claims

1. In a door device in which an upper frame portion disposed at the upper edge of an entrance portion through which a door body moves to open and close is connected to a hanging metal fitting on a frame side via a connecting means, The hanging hardware is configured to include an upper piece portion connected to the frame side member, a vertical piece portion bent from the upper piece portion, and a lower piece portion bent from the vertical piece portion and connected to the upper frame portion, The connecting means is Vibration-damping material, a first connecting fitting that is L-shaped, with a lower piece abutting against the lower surface of the vibration-proofing material and a vertical piece that is fastened to the vertical piece of the hanging fitting; a second connecting fitting that is U-shaped, with an upper piece abutting the upper surface of the vibration-damping material and a lower piece attached to the upper frame side that suspends the door body; and fastening means for fastening the vibration-damping material to the lower piece of the first connecting fitting and the upper piece of the second connecting fitting, A door device characterized in that the fastening means is a bolt head or nut protruding downward from the lower piece of the first connecting fitting, which passes loosely through the lower piece of the hanging fitting.

2. 2. The door device according to claim 1, wherein a through hole is formed in the lower piece of the hanging metal fitting, through which a bolt head or a nut passes loosely.

3. 3. The door device according to claim 2, wherein the through hole opens through a communicating groove that is narrower than the outer diameter of the bolt head or nut and wider than the outer diameter of the threaded portion of the fastening means.

4. A door device according to any one of claims 1 to 3, characterized in that the first connecting fitting vertical piece and the hanging fitting vertical piece are stacked in a crosswise and crosswise manner and have a pair of long holes formed on both the left and right sides of the vibration-damping material through which threaded portions of fastening means for tightening the first connecting fitting vertical piece and the hanging fitting vertical piece pass, and the second connecting fitting vertical piece is narrowed by notching both the left and right edge portions so that the long holes stacked in a crosswise manner can be seen from the second connecting fitting vertical piece side.

5. 5. The door device according to claim 4, wherein the notches formed on both left and right edge portions of the second connecting fitting vertical piece are inclined so that the upper piece side is narrower and the lower piece side is wider.

6. The lower piece of the second connecting fitting has bolt holes formed therein for connecting to the upper frame part, the bolt holes being arranged on both the left and right sides of the vibration-damping material, A door device as described in any one of claims 1 to 5, characterized in that the left and right side edges of the first connecting fitting lower piece are cut out to make them narrower so that the bolt holes formed in the second connecting fitting lower piece can be seen from the first connecting fitting lower piece side.

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