JP2009236468A - Fixing accessory and opening and closing tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing accessory provided with metallic mesh and a frame that can be easily mounted in a place difficult for mounting a fixing accessory, and an opening and closing tool using the fixing accessory. <P>SOLUTION: This fixing accessory 14 includes a plate-like front side pinching part 16, a plate-like back side pinching part 18 capable of pinching a bar-like fixing piece between itself and the front side pinching part 16, a connecting part 20 for connecting the front side pinching part 16 to the back side pinching part 18, a fitting groove 22 in which the bar-like fixing piece is fitted between the front side pinching part 16 and the back side pinching part 18, and a fixing side hole 24 provided for fixing the fixing piece at a prescribed position of at least one of the front side pinching part 16 and the back side pinching part 18. A fixing face is formed for changing the attitude of the fixing accessory with the bar-like fixing piece fitted in the fitting groove 22 as an axis and fixing a fixed object within an opening region and a region including a portion of the fixing piece. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fixing aid that can be easily attached to an object to be fixed, and an opening obturator using the fixing aid.

Conventionally, an exhaust cover for changing the blowing direction of combustion exhaust gas is attached to the exhaust port of the hot water supply apparatus as necessary. As shown in Patent Document 1, a conventional exhaust cover has a leaf spring-like connection fitting. By pressing the connection fitting against a louver provided at the exhaust opening or an inner wall of the exhaust opening, It was attached and detached.
Japanese Utility Model Publication No. 2-114868

  Here, as shown in FIG. 5, the hot water storage unit 100 of the cogeneration system incorporating the auxiliary heat source machine (hot water supply device) may be installed close to the outer wall surface 102 of the building. In this case, the exhaust port 70 of the auxiliary heat source machine needs to be separated from the outer wall surface 102 by a predetermined distance. Therefore, when the hot water storage unit 100 is installed so that the blowing direction of the exhaust port 70 is along the outer wall surface 102, the end of the exhaust port 70 on the outer wall surface 102 side of the building is closed by the opening obturator. It has been studied to block and extend the distance from the outer wall surface 102 to the exhaust port 70.

  The opening obturator needs to be firmly attached to the hot water storage unit 100 in order to prevent dropping or the like. Therefore, it is desirable that the opening obturator is fixed with screws or the like instead of using a plate spring-like connection fitting like the exhaust cover. In order to fix the opening obturator to the hot water storage unit 100 with a screw or the like, it is necessary to provide a screw hole in the hot water storage unit 100 or to attach a fixing auxiliary tool provided with a screw hole to the hot water storage unit 100. However, it is difficult to attach the fixing auxiliary tool to the exhaust port 70 of the auxiliary heat source machine because a cross rail and a wire net are provided along the opening region and there is not enough space. Moreover, the opening obturator is attached only when it is necessary to block a part of the exhaust port 70, and providing a screw hole and a fixing auxiliary tool for that purpose alone is cost and design. It is not preferable from the aspect.

  Therefore, the present invention uses a fixing aid that can easily fix an object to be fixed even if the object to be fixed is difficult to fix due to a wire mesh, a crosspiece, and the like, and the fixing auxiliary tool. It is an object of the present invention to provide an open obturator.

  In order to solve the above-mentioned problem, the invention of claim 1 is attached to a rod-like fixing object arranged so that the opening region extends from one side to the other side, and fixing the object to be fixed to the fixing object. A fixing auxiliary tool that enables a plate-shaped front-side clamping part, a plate-like back-side clamping part capable of clamping a rod-like fixing object between the front-side clamping part, the front-side clamping part and the back-side clamping A connecting portion that connects a portion, a fitting groove into which a rod-like fixing object is fitted between the front-side clamping portion and the back-side clamping portion, and at least one of the front-side clamping portion and the back-side clamping portion. A fixed side hole provided to fix the object to be fixed at a position, and the posture is changed with the rod-shaped fixed object inserted into the insertion groove as an axis, and the fixed object is located within the opening region. Form a fixing surface to fix the object to be fixed in the area including a part. A fixed aid characterized and.

  The invention of this claim can be easily attached to the fixing object by inserting a rod-shaped fixing object between the front-side clamping part and the back-side clamping part and inserting the rod-shaped fixing object into the insertion groove. Moreover, the invention of this claim rotates about the fixed object inserted in the insertion groove as an axis, and the posture can be changed. Therefore, the invention according to the present invention is a fixing surface that is optimal for fixing an object to be fixed to an area within the opening area and including a part of the fixing object by changing the posture by rotation after being attached to the fixing object. Can be formed. Accordingly, the invention of this claim easily forms a fixing surface for fixing an object to be fixed even in an opening region in which a work space is narrowed by a crosspiece and it is difficult to attach an auxiliary fixing tool, Can be firmly fixed to the object to be fixed.

  According to a second aspect of the present invention, in the first aspect of the invention, the front-side clamping portion is arranged so as to expose a part of the back-side clamping portion, and the fixed side hole is an exposed portion of the back-side clamping portion. It is characterized by being provided in.

  In the invention of this claim, when the object to be fixed is fixed, the front side holding part arranged between the back side holding part and the object to be fixed is pushed to the back side holding part side by the object to be fixed. Thereby, the invention of this claim can prevent the front-side clamping part and the back-side clamping part from separating, and can prevent the fixation object from coming off from the insertion groove.

  In the invention of this claim, since the fixed side hole is provided only in the back surface holding portion, the fixed side hole is more fixed than the case where the fixed side hole is provided in a portion where both the front side holding portion and the back side holding portion overlap. The length of the can be short, and the object to be fixed can be fixed easily. For example, when a screw or screw is used to fix the fixing aid to the object to be fixed, the screw hole length can be shortened, so that the screw is hard to tighten and the object to be fixed can be fixed easily. .

  Here, when the fixing assisting tool is attached to the object to be fixed, it is desirable that the rigidity of the fixing assisting tool is low so that the rod-shaped fixing object can be inserted between the front-side clamping part and the back-side clamping part with a light force. On the other hand, after the fixing assisting tool is mounted on the object to be fixed, the strength of holding the object to be fixed firmly is required. Therefore, the rigidity of the fixing assisting tool is preferably high.

  The invention of claim 3 provided on the basis of such knowledge is the invention of claim 1 or 2, wherein the front-side clamping part, the connecting part, and the back-side clamping part are formed by bending a single metal plate. The front-side clamping unit side is smaller than the back-side clamping unit side in a width in the same direction as the axial direction of the fixation target.

  As a result, according to the present invention, the rigidity of the front-side clamping part can be made lower than the rigidity of the back-side clamping part. As a result, when the fixing auxiliary tool according to the present invention is attached to the fixing target, the front-side holding portion having low rigidity can be mainly deformed, and the fixing target can be inserted into the insertion groove of the fixing auxiliary tool with a light force. . In addition, after the fixing auxiliary tool is attached to the fixing target, the fixed target can be firmly held by the highly rigid back side clamping portion.

  Invention of Claim 4 is equipped with the fixing auxiliary tool in any one of Claims 1-3, and the plate-shaped closure member in which the closure side hole corresponding to the above-mentioned fixation side hole was provided in the predetermined position, A part of the opening region is closed by fixing the fixing auxiliary tool attached to a fixing target and the closing member with a fixing means.

  The invention of this claim forms a fixing surface for fixing the closing member with the fixing auxiliary tool for the opening region where it is difficult to attach the fixing auxiliary tool, and fixes the closing member to the fixing auxiliary tool. A part of the open area can be easily closed.

  According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a sealing member that abuts against a peripheral edge of the opening region is provided on one surface of the closing member.

  In the invention of this claim, the sealing member can ensure the airtightness of the joint portion between the peripheral edge of the opening region and the closing member.

  According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, when the blocking member is divided into two regions by an imaginary line passing through the blocking side hole, the blocking member is included in one region. The difference between the magnitude of the moment acting on the seal member and the magnitude of the moment acting on the seal member included in the other region is provided at a position within a predetermined range.

  Therefore, according to the present invention, when the closing member is fixed, a force can be applied equally to the seal member, and it is possible to effectively prevent the occurrence of one-side tightening.

  The invention according to claim 7 is the invention according to any one of claims 4 to 6, wherein the fixing side hole of the fixing assisting tool and the closing side hole of the closing member are arranged when the closing member is arranged with respect to the fixing assisting tool. It is characterized by comprising positioning means for aligning.

  Thus, according to the present invention, when the closing member is fixed to the fixing auxiliary tool, the positioning of the fixing side hole of the fixing auxiliary tool and the closing side hole of the closing member can be easily performed.

  The present invention provides a fixing aid that can easily fix an object to be fixed even if the object to be fixed is provided with a wire mesh, a crosspiece, or the like and is difficult to fix.

Then, the opening obturator 10 which implemented this invention is demonstrated in detail, referring drawings. FIG. 1 is an exploded perspective view of an opening obturator 10 embodying the present invention. FIG. 2A is a front view showing the exhaust port 70 of the auxiliary heat source machine of the cogeneration system to which the opening obturator 10 of the present embodiment is attached, and FIG. It is a front view which shows the exhaust port 70 of the auxiliary heat source machine of the attached cogeneration system. FIG. 3 is a side view for explaining the attachment of the opening obturator 10 to the horizontal rail 82 of the exhaust port 70, and FIG. 3A shows the insertion port 26 of the fixing auxiliary tool 14 facing the horizontal rail 82. 3 (b) shows a state in which the crosspiece 82 is inserted into the insertion groove 22 of the fixing auxiliary tool 14, FIG. 3 (c) shows a state in which the fixing auxiliary tool 14 is rotated, and FIG. (D) shows the state where the closing member 12 is fixed to the fixing auxiliary tool 14 with screws. FIG. 4 is an explanatory diagram illustrating an example of an imaginary line that divides the closing plate of the closing member into two regions.
In the following description, the surface facing the user to which the opening obturator 10 is attached is the front surface, and the facing direction is the front. Further, the positional relationship between the top, bottom, left and right is based on the posture shown in FIG. 1 unless otherwise specified.

  As shown in FIG.2 (b), the opening obturator 10 of this embodiment is an instrument for obstruct | occluding a part of exhaust port provided in the combustion apparatus. The opening obturator 10 of this embodiment obstruct | occludes the exhaust port 70 of the auxiliary heat source machine which comprises a cogeneration system. As shown in FIG. 5, the hot water storage unit 100 of the cogeneration system incorporating the auxiliary heat source machine may be installed in the vicinity of the outer wall surface 102 of the building. In this case, the exhaust port 70 of the auxiliary heat source machine needs to be separated from the outer wall surface 102 by a predetermined distance. When the hot water storage unit 100 is installed so that the outlet direction of the exhaust port 70 is in the direction along the outer wall surface 102, the opening obturator 10 of the present embodiment has an end on the outer wall side 102 of the building at the exhaust port 70. It is an instrument for extending the distance from the outer wall surface 102 to the exhaust port 70 by closing the part.

  The auxiliary heat source machine has the same structure as a conventionally known hot water supply apparatus including a gas burner (combustion device) and a heat exchanger connected to a circulation circuit through which hot water can circulate. Hot water in the circulation circuit can be heated.

  The exhaust port 70 shown in FIG. 2A is an opening for discharging the used combustion gas to the outside of the auxiliary heat source unit, and is provided on the side surface of the auxiliary heat source unit. The exhaust port 70 of the present embodiment is a horizontally long opening whose both ends are formed in a semicircular shape, and a peripheral edge 72 is formed of a stainless steel plate. The peripheral edge 72 of the exhaust port 70 is a semicircular shape connecting the upper and lower edges 74 and 76 of the straight line that forms the upper and lower sides of the opening, and the left and right ends of the upper edge 74 and the lower edge 76. A left edge 78 and a right edge 80 are provided. The upper edge portion 74 and the lower edge portion 76 are disposed substantially in parallel, and a bar-shaped crosspiece 82 is provided between the upper edge portion 74 and the lower edge portion 76 between the upper edge portion 74 and the lower edge portion 76. They are arranged substantially in parallel.

  The horizontal rail 82 is disposed so as to cross the exhaust port 70 and divides the exhaust port 70 into two upper and lower regions. In the present embodiment, the distance from the upper edge portion 74 to the horizontal crosspiece 82 is substantially the same as the interval from the lower edge portion 76 to the horizontal crosspiece 82, and is an interval that can barely insert one finger.

  As shown in FIG. 1, the opening obturator 10 of the present embodiment includes a closing member 12 and a fixing auxiliary tool 14, and the fixing auxiliary tool 14 is attached to a horizontal rail 82 (an object to be fixed) of the exhaust port 70. A member that closes a part of the exhaust port 70 by fixing the closing member 12 to the fixing assisting tool 14.

  The closing member 12 includes a closing plate 30 and a seal member 32. The blocking plate 30 is a metal plate that blocks a part of the exhaust port 70, and includes a semicircular semicircular portion 34 and a linear positioning contact portion 36 that connects both ends of the semicircular portion 34. “D” shape. The semicircular portion 34 of the closing plate 30 is disposed on the left edge 78 or the right edge 80 of the exhaust port 70, and the positioning contact portion 36 is in contact with a positioning portion 28 of the fixing assisting tool 14 described later. Further, a closing side hole 38 for fixing the closing member 12 to the fixing auxiliary tool 14 is provided at a predetermined position of the closing plate 30. The closing side hole 38 of the present embodiment is a so-called female screw.

  The sealing member 32 is affixed to one surface of the closing plate 30 and is a member that is sandwiched between the peripheral edge 72 of the exhaust port 70 and the closing plate 30 when the closing member 12 is fixed to the fixing auxiliary tool 14 described later. Thus, the airtightness of the joint portion between the peripheral edge 72 of the exhaust port 70 and the closing plate 30 can be ensured. The seal member 32 is formed of rubber, resin, or the like.

  The fixing auxiliary tool 14 is formed in a clip shape by bending a metal plate and connecting the pair of front-side clamping parts 16 and the back-side clamping part 18 so as to face each other. The fixing assisting tool 14 has one end portion that is a connecting portion 20 that connects the front-side holding portion 16 and the back-side holding portion 18, and the other end portion that is connected to the horizontal beam 82 of the exhaust port 70 to be fixed. 16 and an insertion port 26 for insertion between the rear side clamping unit 18 and the rear side clamping unit 18. The fixing assisting tool 14 can elastically hold the horizontal rail 82 of the exhaust port 70 between the plate-like front side holding part 16 and the back side holding part 18. Further, the fixing assisting tool 14 has a size that fits between the upper edge 74 and the lower edge 76 of the exhaust port 70 in the vertical direction.

  The front-side clamping unit 16 is a part that is disposed on the fixed object side when the fixed auxiliary tool 14 fixes the fixed object, and includes a positioning unit 28. The positioning portion 28 is formed by bending a part of the front side holding portion 16 in a direction away from the back side holding portion 18. The area of the front side clamping unit 16 is smaller than the area of the back side clamping unit 18, and a part of the back side clamping unit 18 is exposed from the front side clamping unit 16 when the fixing assisting tool 14 is viewed from the front side clamping unit 16 side. Further, the front-side clamping unit 16 is formed to be smaller than the back-side clamping unit 18 in the width in the same direction as the axial direction of the horizontal rail 82 to be mounted.

  The back side clamping unit 18 includes a fitting groove 22 into which the horizontal rail 82 of the exhaust port 70 is fitted, and a fixed side hole 24 corresponding to the closing side hole 38. The insertion groove 22 is disposed at the approximate center of the back-side clamping unit 18. The fixed side hole 24 is an exposed portion that is not covered by the front side clamping portion 16, and is provided on the insertion port 26 side in the vicinity of the insertion groove 22.

  Next, attachment of the opening obturator 10 will be described with reference to FIG. In the opening obturator 10, the fixing auxiliary tool 14 is attached to the horizontal rail 82 of the exhaust port 70 of the auxiliary heat source machine according to the procedure of FIGS. 3 (a) to 3 (c), and as shown in FIG. 3 (d), the exhaust port A part of the exhaust port 70 can be blocked by the blocking member 12 by fixing the blocking member 12 to the fixing auxiliary tool 14 mounted on the horizontal rail 82 of the 70.

  As shown in FIGS. 3A and 3B, the fixing auxiliary tool 14 inserts the horizontal beam 82 of the exhaust port 70 from the insertion port 26, and inserts the horizontal beam 82 into the insertion groove 22 of the back-side clamping unit 18. Thus, it can be attached to the crosspiece 82 of the exhaust port 70. The fixing assisting tool 14 attached to the horizontal beam 82 can be rotated and moved with the horizontal beam 82 as an axis. As shown in FIG. 3C, the user has a posture in which the front-side clamping unit 16 and the back-side clamping unit 18 of the fixing assisting tool 14 are substantially parallel to the surface formed by the peripheral edge 72 of the exhaust port 70. The posture of the fixing assisting tool 14 is adjusted, and a fixing surface for fixing the closing member 12 is formed.

  After adjusting the posture of the fixing assisting tool 14, the user places the closing member 12 at a predetermined position of the fixing assisting tool 14 as shown in FIG. The closing member 12 causes the positioning contact portion 36 of the closing plate 30 to contact the positioning portion 28 of the fixing assisting tool 14, thereby connecting the fixing side hole 24 of the fixing assisting tool 14 and the closing side hole 38 of the closing member 12. It can be easily positioned. Further, as shown in FIG. 2B, the semicircular portion 34 of the closing plate 30 is disposed at the right edge 80 of the exhaust port 70. At this time, the sealing member 32 is disposed between the closing plate 30 and the peripheral edge 72 of the exhaust port 70.

  After the closing member 12 is disposed at a predetermined position of the fixing auxiliary tool 14, the user fixes the closing member 12 and the fixing auxiliary tool 14 through the screw 50 through the closing side hole 38 and the fixing side hole 24. Thus, the closing member 12 is attached to the horizontal rail 82 of the exhaust port 70 via the fixing auxiliary tool 14, and a part of the exhaust port 70 can be closed.

  As described above, the fixing assisting tool 14 of the present embodiment closes the region including the horizontal beam 82 in the exhaust port 70 by sandwiching the horizontal beam 82 of the exhaust port 70 and rotating the horizontal beam 82 about the axis. A fixing surface for fixing the member 12 can be easily formed. Therefore, the fixing assisting tool 14 of the above embodiment can easily attach the closing member 12 even to the exhaust port 70 in which the working space is narrowed by the horizontal rail and it is difficult to attach the fixing assisting tool 14.

  Further, in the fixing auxiliary tool 14 of the present embodiment, the fixing side hole 24 is arranged closer to the insertion port 26 than the insertion groove 22. Therefore, it is possible to prevent the horizontal rail 82 from moving to the insertion port 26 side by the attached screw 50. Moreover, the opening obturator 12 of this embodiment clamps the back side clamping part 18 of the fixing auxiliary tool 14 and the obstruction board 30 of the closing member 12 with the screw 50, so that the front side clamping part 16 and the back side clamping part of the fixing auxiliary tool 14. 18 can be prevented from coming off from the fitting groove 22.

  Further, since the fixing auxiliary tool 14 of the present embodiment is provided with the fixing side hole 24 only in the back side clamping part 18, the fixing side hole 24 is provided in a portion where both the front side clamping part 16 and the back side clamping part 18 overlap. Compared to the case, the length of the fixed side hole 24 is short, and the screw 50 is not easily tightened. Therefore, the closing member 12 can be easily fixed with the screw 50.

  Further, the fixing assisting tool 14 of the present embodiment is formed such that the front side clamping part 16 is smaller than the back side clamping part 18 in the width in the same direction as the axial direction of the horizontal rail 82 to be mounted. For this reason, in the fixing auxiliary tool 14 of the present embodiment, the rigidity of the front-side clamping unit 16 is lower than the rigidity of the back-side clamping unit 18. As a result, when the fixing assisting tool 14 of the present embodiment is mounted on the horizontal beam 82 of the exhaust port 70, the front side clamping portion 16 having low rigidity is mainly deformed, and the horizontal beam 82 is inserted into the insertion groove 22 with a light force. Can be made. In addition, after the fixing assisting tool 14 is attached to the crosspiece 82, the closing member 12 can be firmly fixed to the back side clamping portion 18 having high rigidity.

  Moreover, since the opening obturator 10 of this embodiment uses the screw | thread 50 etc. for fixation with the fixing auxiliary tool 14 and the obstruction | occlusion member 12, compared with the case where a spring etc. are used, the obstruction | occlusion member 12 is with respect to an auxiliary heat source machine. Can be fixed more firmly.

  Further, the closing side hole 38 of the closing plate 30 acts on the seal member 32 included in one region when the closing plate is divided into two regions by a virtual line passing through the closing side hole 38 as shown in FIG. It is desirable that the difference between the magnitude of the moment and the magnitude of the moment acting on the seal member 32 included in the other region is provided within a predetermined range. By adopting such a configuration, the tightening force by the screw 50 can be applied to the seal member 32 evenly, and it is possible to effectively prevent the one-side tightening from being caused by the screw.

  The opening obturator 10 according to the present embodiment fixes the closing side hole 38 of the closing member 12 and the fixing auxiliary tool 14 by bringing the positioning contact portion 36 of the closing plate 30 into contact with the positioning portion 28 of the fixing auxiliary tool 14. The side holes can be easily aligned.

  Further, the opening obturator 10 of the present embodiment has a small installation space for a combustion device such as an auxiliary heat source unit of a cogeneration system, and even when it is difficult to ensure the distance from the outer wall surface 102 to the exhaust port 70. The distance from the outer wall surface 102 to the exhaust port 70 can be extended by closing the end of the exhaust port 70 on the outer wall surface 102 side of the building, and the degree of freedom of installation of the combustion device in a narrow space is increased. be able to.

  In the above embodiment, the fixing auxiliary tool 14 is attached to the crosspiece 82 provided at the exhaust port 70 of the auxiliary heat source machine, but the fixing target to which the fixing auxiliary tool 14 is attached is not limited. The fixing assisting tool 14 can be attached at any position provided with a rod-shaped fixing object serving as an axis and a space in which the fixing assisting tool 14 can rotate. For example, it can be attached to a net-like grill placed at the outlet of a bathroom dryer through which gas is blown out, a wire mesh fence installed in a park or the like.

  Moreover, in the said embodiment, although the to-be-fixed object fixed to the fixing auxiliary tool 14 was the obstruction | occlusion member 12 which obstruct | occludes the exhaust port 70 of an auxiliary heat source machine, this invention limits an to-be-fixed object to the obstruction | occlusion member 12. I don't mean. The article to be fixed may be any article that can be attached to the fixation assisting tool 14. For example, you may attach the hook for installing a hanger and a clothesline to the fixing auxiliary tool 14 attached to the grill of the blower outlet of the bathroom dryer. A signboard or a trash can may be attached to the fixing auxiliary tool 14 attached to the wire mesh fence.

  The opening obturator may be provided with a leaf spring-like connection fitting, and may be configured to be attached to the exhaust port 70 by pressing the connection fitting against the inner wall of the exhaust port 70 or the horizontal rail 82.

It is a perspective view which shows the opening obturator which implemented this invention. (A) It is a front view which shows the exhaust port of the auxiliary heat source machine with which the opening obturator of this embodiment is attached, (b) It is a front view which shows the exhaust port of the auxiliary heat source machine with which the opening obturator was attached. It is a side view explaining attachment of the opening obturator to the horizontal rail of an exhaust port, (a) is a state where the insertion port of the fixing auxiliary tool is directed to the horizontal rail, and (b) is a horizontal rail fixing aid. The state inserted in the insertion groove of the tool, (c) shows the state where the fixing auxiliary tool is rotated, and (d) shows the state where the closing member is fixed to the fixing auxiliary tool with screws. It is explanatory drawing which shows an example of the virtual line which divides the obstruction board of an obstruction | occlusion member into two area | regions. It is a perspective view which shows the installation state of the hot water storage unit of the cogeneration system which incorporated the auxiliary heat source machine.

Explanation of symbols

10 Opening obturator 12 Closing member (fixed object)
DESCRIPTION OF SYMBOLS 14 Fixing tool 16 Front side clamping part 18 Back side clamping part 20 Connection part 22 Insertion groove 24 Fixed side hole 28 Positioning part (positioning means)
32 Seal member 36 Positioning contact part (positioning means)
38 Blocking side hole 70 Exhaust port (opening area)
82 Horizontal rail (fixed)

Claims (7)

A fixing aid that is attached to a rod-shaped fixing object that is arranged so as to cross the opening region from one side to the other side, and that allows the object to be fixed to the fixing object to be fixed,
A plate-shaped front side clamping part;
A plate-like back side clamping part capable of clamping a rod-like fixed object between the front side clamping part; and
A connecting portion for connecting the front side holding portion and the back side holding portion;
An insertion groove into which a rod-shaped fixing object is inserted between the front side clamping part and the back side clamping part,
A fixed side hole provided for fixing an object to be fixed at a predetermined position of at least one of the front side holding part or the back side holding part,
The posture is changed with the rod-like fixed object inserted into the insertion groove as an axis, and a fixing surface for fixing an object to be fixed is formed in an area within the opening region and including a part of the fixing object. Fixing aid featured. The front side clamping part is arranged so as to be overlapped so that a part of the back side clamping part is exposed,
The fixing auxiliary tool according to claim 1, wherein the fixing side hole is provided in an exposed portion of the back side clamping portion. The front side clamping part, the connecting part, and the back side clamping part are formed by bending a single metal plate,
The fixing auxiliary tool according to claim 1 or 2, wherein the front side clamping unit side is smaller than the back side clamping unit side in a width in the same direction as the axial direction of the fixation target. A fixing aid according to any one of claims 1 to 3,
A plate-like closing member provided with a closing side hole corresponding to the fixed side hole at a predetermined position;
A part of the opening region is closed by fixing the fixing auxiliary tool attached to a fixing target and the closing member with a fixing means.   The opening obturator according to claim 4, wherein a sealing member that abuts on a peripheral edge of the opening region is provided on one surface of the closing member.   When the blocking member is divided into two regions by an imaginary line passing through the blocking side hole, the blocking side hole has a magnitude of a moment acting on the sealing member included in one region and a sealing member included in the other region. 6. The opening obturator according to claim 4 or 5, wherein the opening obturator is provided at a position where a difference from a magnitude of a moment acting on the lens falls within a predetermined range.   The positioning means for aligning the fixed side hole of the fixing auxiliary tool and the closing side hole of the closing member when the closing member is arranged with respect to the fixing auxiliary tool. The open obturator according to any one of the above.

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