JP6405247B2 - Expansion joint device - Google Patents

Description

  The present invention relates to an expansion joint device that covers gaps between housings.

  As an expansion joint device of this type, for example, Patent Document 1 discloses a frame joint device in which adjacent housings are closed via a gap and fixed to only one of the housings, and the gap is closed. A cover material, a slide engagement receiving portion, a holder material for supporting the cover material from below, a pedestal member, and a spring portion wound in a coil shape on both side base ends of the latch arm portion; A structure having a horizontal urging member having a fixed arm portion on the proximal end side of the spring portion is disclosed. In this structure, when the fixed arm portion of the spring portion is fixed to one housing and one side of the holder material is rotatably attached to the pedestal member, the latch arm portion of the spring portion is slidably received by the holder material. It is made to engage with.

Japanese Patent No. 3866438

However, in the conventional structure described above, since the spring part must be engaged with the holder material when attaching the holder material, the holder material must be attached against the urging force of the spring part, and workability is poor. It was.
Then, this invention makes it a subject to make attachment easier than before in the expansion joint apparatus provided with the spring member.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

Invention of Claim 1 is an expansion joint apparatus which covers the clearance gap between housings, Comprising: The supporting member fixed to the fixed surface of one housing, The bracket attached rotatably to the said supporting member, A cover member that is supported by a bracket and covers the gap, a spring member that urges the bracket in a direction in which the cover covers the gap, and is attached to the one housing and engages the support member A frame member, and the spring member includes two engagement portions, a first engagement portion that engages with the support member, and a second engagement portion that engages with the bracket. one of the unit that one of the engagement portions only pre-assembled with the support member or the support member said engaged with the bracket in a state in which no working biasing force of said spring member and said bracket and said spring member Characterized in that the after fixed to the frame member is engageable with the support member or the bracket push the other of said engaging portion formed on the left and right using the open end portion of said spring member And

  According to a second aspect of the present invention, in addition to the feature of the first aspect of the present invention, the spring member is a coil provided between the first engaging portion and the second engaging portion. And a rotating shaft portion that rotatably supports the bracket is inserted into the coil portion.

  According to a third aspect of the present invention, in addition to the features of the first or second aspect of the present invention, the pivot shaft portion that rotatably supports the bracket is integrated with the support member or the bracket. It is characterized by being formed.

Invention according to claim 4, in addition to the feature point of the invention according to any of claims 1 to 3 as described above, before Symbol support member, urged in the direction of engagement with the frame member by the spring member It is characterized by being.

The invention according to claim 5, in addition to the feature point of the invention according to any of claims 1 to 4 above, wherein the frame member is abutting the bottom plate to the fixed surface of the one precursor, said bottom plate A rib-shaped support surface portion protruding from the portion, and a hook-shaped portion protruding from the bottom plate portion so as to face the support surface portion, and the support member is in contact with the support surface portion and fixed with screws A fixed surface and a hook portion that engages with the hook-shaped portion, and with the hook portion hooked on the hook-shaped portion, by swinging the support member with the hook portion as a fulcrum, The support surface portion and the screw fixing surface are overlapped to be engageable with each other.

  According to a sixth aspect of the present invention, in addition to the feature of the first aspect of the present invention, the cover member is disposed substantially parallel to the fixed surface, and the bracket is rotated. The shaft is located between the cover material and the fixed surface.

  The invention according to claim 7 is characterized in that, in addition to the features of the invention according to any of claims 1 to 5, the cover material is arranged so as to be substantially orthogonal to the fixed surface, The distance from the rotating shaft to the top surface of the cover member is formed to be smaller than the distance from the rotating shaft of the bracket to the fixed surface.

  The invention according to claim 1 is as described above, wherein the spring member includes two engaging portions, and only one of the two engaging portions is engaged with the supporting member or the bracket. After being fixed to the housing, the other non-engaged engaging portion can be engaged with the support member or the bracket. According to such a configuration, it is not necessary to perform attachment with the spring biasing force applied as in the prior art, and the spring biasing force can be applied after the bracket is attached. There is no need to put in, and the work can be facilitated.

  The invention according to claim 2 is as described above, and the spring member includes a coil portion provided between a first engagement portion and a second engagement portion, and the bracket is attached to the coil portion. Is pivotally supported so as to be pivotable. According to such a configuration, since the spring member and the rotation shaft portion of the bracket are concentric, smooth rotation can be realized. Further, since the rotating shaft portion is inserted through the coil portion of the spring member, the rotating shaft portion serves as a guide rod, and there is no concern about buckling of the coil portion.

  The invention according to claim 3 is as described above, and the rotation shaft portion that rotatably supports the bracket is formed integrally with the support member or the bracket. According to such a configuration, the rotating shaft portion can be formed of a shape member, the number of parts can be reduced, and there is no fear of insufficient strength.

Further, the invention of claim 4 is as described above, prior to Symbol support member is biased in the direction of engagement with the frame member by the spring member. According to such a configuration, when the two engaging portions of the spring member are engaged, a force is applied to close the bracket by the second engaging portion, and the support member is moved by the first engaging portion. Since a force for engaging with the frame material works, the support member can be more firmly fixed to the frame material.

The invention according to claim 5 is as described above, and the support member includes a screw fixing surface that is abutted on the support surface portion and fixed by screws, and a hook portion that engages with the hook-shaped portion. In the state where the hook portion is hooked on the hook-shaped portion, the support member is swung with the hook portion as a fulcrum, so that the support surface portion and the screw fixing surface can be overlapped and engaged. Since it is comprised , work can be made easy .

  The invention according to claim 6 is as described above, wherein the cover material is disposed substantially parallel to the fixed surface, and the pivot shaft of the bracket is disposed between the cover material and the fixed surface. positioned. According to such a configuration, the position of the pivot shaft of the bracket can be brought as close as possible to the end portion of the cover member (the end portion on the one housing side). For this reason, a large movable range is secured when the bracket is rotated so that the opposite end of the cover member (the end on the other housing side) moves upward, and it is possible to cope with larger shaking. .

  The invention according to claim 7 is as described above, wherein the cover material is arranged so as to be substantially orthogonal to the fixed surface, and the distance from the pivot shaft of the bracket to the top surface of the cover material. However, it is formed so that it may become smaller than the distance from the rotating shaft of the bracket to the fixed surface. According to such a configuration, since the rising portion is not provided in the top surface direction of the cover material, interference between the cover material and the fixed surface is less likely to occur. For this reason, a large movable range is ensured when the bracket is rotated so that the end of the cover member on the other housing side moves upward, and it is possible to cope with a larger shaking.

(A) is a side view of an expansion joint apparatus, (b) is a side view of a frame material, a supporting member, and a bracket, (c) is a perspective view of a spring member. It is explanatory drawing which shows the attachment method of an expansion joint apparatus, Comprising: (a) is a figure which concerns on the procedure which attaches a frame material, (b) is a figure which concerns on the procedure which attaches a supporting member, (c) And (d) is a supporting member It is a partially expanded view at the time of attaching. It is explanatory drawing which shows the attachment method of an expansion joint apparatus, Comprising: (a) is a figure which concerns on the procedure which fixes a support member with a screw | thread, (b) is a figure which concerns on the procedure which engages a spring member. It is explanatory drawing which shows the attachment method of an expansion joint apparatus, Comprising: It is a figure which concerns on the procedure which attaches a cover material. It is explanatory drawing which shows the operating state of the expansion joint apparatus which followed the shaking of an earthquake, etc., (a) is a figure when a housing fluctuates in the direction which widens a gap, (b) is a housing fluctuating in the direction which narrows a gap. FIG. It is explanatory drawing which shows the operation state of the expansion joint apparatus which followed the shaking of an earthquake, etc., (a) is a figure when one housing is fluctuating above the other housing, (b) is the other housing. It is a figure at the time of fluctuating upwards rather than one housing. It is explanatory drawing which shows the operating state of the expansion joint apparatus which followed the shake of an earthquake etc., Comprising: It is a figure when a housing approaches by the shake. (A) is a side view of an expansion joint device according to Modification 1, and (b) is a side view of the expansion joint device according to Modification 2. (A) is a side view of the expansion joint device according to Modification 3, and (b) is an explanatory view showing the operating state of the expansion joint device according to Modification 3. (A) is a side view of a frame material, a support member, and a bracket according to Modification 3, and (b) and (c) are partially enlarged views when the support member according to Modification 3 is attached. It is an external view of the expansion joint apparatus which concerns on the example which attaches the wire for fall prevention to a cover material.

  Embodiments of the present invention will be described with reference to the drawings.

  The expansion joint device 10 according to the present embodiment is provided between two housings 30 and 40 arranged with a gap G, and covers the gap G between the two housings 30 and 40 facing each other. Is provided. In this embodiment, as shown to Fig.1 (a), the expansion joint apparatus 10 is provided between the one housing 30 and the other housing 40 which are all wall housings.

  As shown in FIG. 1A, the expansion joint device 10 includes a frame member 11 attached to a fixing surface 31 of one housing 30 and a fixing surface 31 of the one housing 30 by engaging with the frame material 11. A support member 13 fixed to the support member 13, a bracket 15 rotatably attached to the support member 13, a cover material 16 supported by the bracket 15 and covering the gap G, and a direction in which the cover material 16 covers the gap G A spring member 19 that urges the bracket 15, a sheet holder 20 that is fixed to the other housing 40, and a waterproof sheet 22 that is disposed below the cover member 16 are provided.

  The frame material 11 according to the present embodiment is a long aluminum extruded shape, and is attached along the gap G to the fixed surface 31 of one housing 30. As shown in FIG. 1B, the frame member 11 is opposed to the bottom plate portion 11a that contacts the fixed surface 31 of the housing 30, the rib-like support surface portion 11b protruding from the bottom plate portion 11a, and the support surface portion 11b. In this way, a hook-like portion 11c protruding from the bottom plate portion 11a and a leg portion 11d extending obliquely downward from the tip of the bottom plate portion 11a are provided. The support surface portion 11b protrudes obliquely from the bottom plate portion 11a, and is inclined so as to approach the hook-shaped portion 11c as it goes upward (tip). The hook-shaped portion 11c protrudes substantially perpendicularly from the bottom plate portion 11a, and the tip is refracted in a substantially L shape in the opposite direction to the support surface portion 11b. The hook portion 13c of the support member 13, which will be described later, can be engaged by bending the tip of the hook-shaped portion 11c. The leg portion 11d is a portion that protrudes from the one housing 30 toward the other housing 40, and a sheet fixing portion 11e for holding the end of the water-stop sheet 22 is provided at the tip of the leg portion 11d. ing.

  The support member 13 is an aluminum extruded shape formed shorter than the frame material 11, and a plurality of support members 13 are attached to the frame material 11 at a predetermined interval. As shown in FIG. 1B, the support member 13 includes a leg portion 13a having a substantially U-shaped cross section, a neck portion 13f protruding from the leg portion 13a, and a round bar-like shape provided at the tip of the neck portion 13f. And a rotation shaft portion 13e. The leg portion 13a is a portion that engages with the support surface portion 11b and the flange-shaped portion 11c of the frame member 11, and includes a screw fixing surface 13b that engages with the support surface portion 11b and a hook portion that engages with the flange-shaped portion 11c. 13c. The screw fixing surface 13b is a portion that comes into contact with the support surface portion 11b. The screw fixing surface 13 b is formed so as to be inclined with respect to the fixing surface 31 of one housing 30 when the support member 13 is attached to the frame material 11. The hook portion 13c has a tip refracted in an approximately L shape in the direction of the screw fixing surface 13b. The refracted tip is engaged with the flange-shaped portion 11 c of the frame material 11 so that the support member 13 does not easily fall off the frame material 11. A shoulder portion 13d for engaging a spring member 19 described later is provided slightly above the hook portion 13c. The rotation shaft portion 13e is a portion serving as a rotation shaft that rotatably supports the bracket 15. The rotating shaft portion 13e is supported by being connected to the neck portion 13f in the vicinity of the middle, and both end portions protrude without being supported by the neck portion 13f, and a coil portion of a spring member 19 to be described later is formed at both protruding end portions. 19d can be attached.

  The bracket 15 is an aluminum extruded shape formed slightly shorter than the support member 13, and is attached to the support member 13 so as to be rotatable. As shown in FIG. 1A, the bracket 15 is disposed so as to be installed in the gap G between the housings 30 and 40. As shown in FIG. 1B, the bracket 15 is provided with a flat portion 15c to which the cover material 16 is attached, a bearing portion 15a provided at one end of the flat portion 15c, and the other end of the flat portion 15c. A tip leg 15d. The flat portion 15 c is a portion for attaching the cover material 16 to the upper surface and supporting the cover material 16, and plays a role of a girder built in the gap portion G. On the upper surface of the flat portion 15c, a spring receiving portion 15b for engaging a spring member 19 to be described later is recessed. The bearing portion 15a is a portion having a substantially C-shaped cross section, and the bracket portion 15a can rotate with respect to the support member 13 by holding the rotation shaft portion 13e of the support member 13 rotatably. It has become. The tip leg portion 15d is a portion that contacts the contact surface 41 of the other housing 40 and supports the bracket 15 on the other housing 40 side. The distal leg portion 15d extends obliquely downward so that the flat portion 15c is substantially horizontal and is in contact with the contact surface 41 of the other housing 40.

  The cover member 16 is a long member that is fixed to the upper surface of the bracket 15 and covers the gap G. As shown in FIG. 1A, the cover material 16 according to the present embodiment includes a top surface portion 16a supported by the bracket 15 and covering the gap portion G, and rising portions 16b provided at both ends of the top surface portion 16a. It has. A weather strip 17 is attached to the leading end of the rising portion 16b, and the weather strip 17 contacts the surface of the housings 30 and 40, so that the cover material 16 (tip of the rising portion 16b) and the housings 30 and 40 are in contact with each other. There are no gaps. Further, when the cover member 16 is pressed against the housings 30 and 40 due to the deformation of the housings 30 and 40 due to the shaking of the earthquake, the weather strip 17 is elastically deformed, so that the cover member 16 is damaged while absorbing the changes. Can be prevented.

  The spring member 19 is a spring formed of a wire as shown in FIG. 1 (c), and includes two engaging portions, a first engaging portion 19a and a second engaging portion 19b. A pair of coil portions 19d is provided between the first engaging portion 19a and the second engaging portion 19b. Specifically, both ends of the wire are bent in a substantially L shape so as to face each other, thereby forming a second engagement portion 19b. Then, a pair of coil portions 19d wound in a coil shape so as to be continuous from the second engagement portions 19b on both sides are provided, and a substantially U-shaped first engagement portion 19a is connected so as to connect the pair of coil portions 19d. Is formed. The spring member 19 engages with the support member 13 and the bracket 15 and acts to pull the two members toward each other in the closing direction by the urging force stored in the coil portion 19d. The first engagement portion 19 a is a portion that engages with the support member 13, and specifically engages with the shoulder portion 13 d of the support member 13. Further, the second engagement portion 19b is a portion that engages with the bracket 15, and specifically, engages with the spring receiving portion 15b of the bracket 15. The second engaging portion 19b according to the present embodiment is divided into left and right sides, and is engaged with the bracket 15 so as to be sandwiched from both sides. Therefore, the second engaging portion 19b is pushed and expanded to the left and right to engage with the bracket 15. Removal is possible.

  The support member 13, the bracket 15, and the spring member 19 described above are used by being assembled in advance as shown in FIG. Specifically, the bracket 15 and the support member 13 are engaged by engaging the bearing portion 15 a of the bracket 15 with the rotation shaft portion 13 e of the support member 13. At this time, since the bracket 15 is formed to be slightly shorter than the support member 13, both ends of the rotation shaft portion 13e protrude from the bearing portion 15a (see FIG. 3B). The protruding rotation shaft portion 13 e is inserted into the coil portion 19 d of the spring member 19 so that the spring member 19 is attached to the support member 13. At this time, the first engagement portion 19a is engaged with the shoulder portion 13d of the support member 13, and the second engagement portion 19b is not engaged with the spring receiving portion 15b of the bracket 15. In this way, if only one of the two engaging portions is engaged, the urging force of the spring member 19 is not applied, so that the subsequent assembling work is facilitated.

  The sheet holder 20 is a long aluminum extruded shape, and is fixed to the other casing 40 along the gap G as shown in FIG. The seat holder 20 includes a sheet holding portion 20 a that protrudes from the other housing 40 toward the one housing 30 so as to face the sheet fixing portion 11 e of the frame material 11. The sheet holding portion 20 a is for holding the end portion of the water-stop sheet 22 on the opposite side of the frame material 11.

The water-stop sheet 22 is for preventing rainwater and the like from entering the gap G particularly when the expansion joint device 10 is used outdoors. The waterproof sheet 22 is disposed below the cover material 16 with one end held by the sheet fixing portion 11 e of the frame material 11 and the other end held by the sheet holding portion 20 a of the sheet holder 20. This waterproof sheet 22 may be omitted when it is not necessary to ensure waterproofness, such as when the expansion joint device 10 is used indoors. When the waterproof sheet 22 is omitted, the sheet holder 20 can also be omitted.
The above-described expansion joint device 10 is attached in the following procedure.

  First, as shown in FIG. 2A, the frame material 11 is fixed to the fixing surface 31 of one housing 30. Specifically, the frame material 11 is brought into contact with the fixed surface 31 of one housing 30 by the bottom plate portion 11a of the frame material 11 and the frame material mounting screw 12 penetrating the bottom plate portion 11a is screwed to the fixed surface 31. 11 is fixed to the fixing surface 31 of one housing 30. When the water stop sheet 22 is attached, the water stop sheet 22 is attached to the frame material 11 and the sheet holder 20 in advance, and the sheet holder 20 is fixed to the contact surface 41 of the other housing 40 by the holder attaching screw 21. To do.

  Next, as shown in FIG. 2B, a unit composed of the support member 13, the bracket 15, and the spring member 19 that are assembled in advance is attached to the frame material 11. Specifically, as shown in FIG. 2 (c), the hooking portion 13c of the support member 13 is hooked on the hook-like portion 11c of the frame member 11, and the support member 13 is swung with the hooking portion 13c as a fulcrum in this state. Then, as shown in FIG. 2D, the support surface portion 11b and the screw fixing surface 13b are overlapped and engaged. In this way, since the unit assembled in advance is mounted on the frame material 11, the workability is better than the conventional structure in which a bracket or the like is directly fixed to the housing, and the time and effort for positioning are also reduced. be able to.

  Next, as shown in FIG. 3A, the support member mounting screw 14 is attached to the portion where the support surface portion 11 b and the screw fixing surface 13 b overlap, and the screw fixing surface 13 b is screwed to the frame material 11. At this time, the mounting of the support member mounting screw 14 is facilitated by providing the screw fixing surface 13b with an inclination.

  Next, as shown in FIG. 3B, the second engaging portion 19 b of the spring member 19 is engaged with the spring receiving portion 15 b of the bracket 15. Since the second engagement portion 19b is formed by using the release end portion 19c of the wire rod, if the release end portion 19c is spread outward and wraps around in front of the spring receiving portion 15b of the bracket 15, the spring The second engaging portion 19 b of the member 19 can be engaged with the spring receiving portion 15 b of the bracket 15.

  In this way, by engaging the second engagement portion 19b of the spring member 19 with the spring receiving portion 15b of the bracket 15, the urging force of the spring acts on the bracket 15 in the second engagement portion 19b, and the bracket 15 The force which tries to press 15 d of front-end | tip leg against the contact surface 41 of the other housing 40 acts. On the other hand, in the first engaging portion 19a, the urging force of the spring acts on the support member 13, and a force for engaging the support member 13 with the frame material 11 works. That is, as shown in FIG. 2 (d), when the biasing force of the spring acts on the first engaging portion 19a, the shoulder portion 13d of the support member 13 moves toward the frame material 11 and the fixing surface 31 (FIG. 2 (d). ) In the lower right direction). For this reason, the urging force of the spring member 19 acts to make it difficult for the support member 13 and the frame material 11 to be disengaged.

  Finally, as shown in FIG. 4, the cover material 16 is attached to the bracket 15. Specifically, the cover member 16 is placed on the flat portion 15 c of the bracket 15, and the flat portion 15 c of the bracket 15 and the top surface portion 16 a of the cover member 16 are fixed by the cover fixing screw 18. Thereby, the attachment of the expansion joint apparatus 10 is completed.

  According to such an expansion joint device 10, for example, as shown in FIGS. 5A and 5B, the two housings 30 and 40 are moved relative to each other in the horizontal direction due to an earthquake shake or the like. Even so, fluctuations of the casings 30 and 40 can be absorbed by the tip leg portion 15d of the bracket 15 and the tip of the cover material 16 (the weather strip 17) sliding on the contact surface 41 of the other casing 40. .

  Further, as shown in FIGS. 6A and 6B, even if the two casings 30 and 40 move relative to each other in the vertical direction, the brackets 15 are rotated to change the fluctuations of the casings 30 and 40. Can be absorbed. At this time, since the bracket 15 is always pressed against the contact surface 41 of the other housing 40 by the spring member 19, the bracket 15 is rotated while maintaining the state where the gap G is closed by the cover material 16. Can do.

  Further, in the present embodiment, the rotation shaft (rotation shaft portion 13 e) of the bracket 15 is located between the cover member 16 and the fixed surface 31 of one housing 30. In other words, the rotating shaft of the bracket 15 is disposed near the end of the cover member 16 above the one housing 30. As a result, the pivot fulcrum is in the vicinity of the end of the cover member 16, so that the bracket 15 is moved so that the end of the other cover 40 side of the cover member 16 moves upward as shown in FIG. 6 (b). Even when the bracket 15 is rotated, a large movable range of the bracket 15 is ensured, so that it is possible to cope with a greater shaking.

  In the present embodiment, as shown in FIG. 7, the height of the sheet fixing part 11 e of the frame material 11 and the height of the sheet holding part 20 a of the sheet holder 20 are different. Accordingly, even when the two housings 30 and 40 are close to each other, the sheet fixing portion 11e and the sheet holding portion 20a are not easily in contact with each other.

(Modification 1)
In the above-described embodiment, the cover material 16 is described as a single sheet. However, when the gap G has a large width, a plurality of divided covers 16c and 16d are combined as shown in FIG. The cover material 16 may be configured. Further, the bracket 15 may be configured by combining a plurality of divided pieces 15e and 15f in accordance with the cover material 16.
In addition, you may connect the divided | segmented cover material 16 and the bracket 15 with a crimping structure or a joint structure, for example.

(Modification 2)
When the gap G is large, the relative movement amount of the two housings 30 and 40 when the shaking occurs is also large. Therefore, when the two housings 30 and 40 are moved away from each other, the bracket 15 There is a possibility that the tip leg 15d may come off the contact surface 41 of the other housing 40. In such a case, as shown in FIG. 8B, a guide member 23 protruding from the contact surface 41 of the other housing 40 toward the one housing 30 may be provided. By providing the guide member 23, even when the gap portion G exceeds the length of the bracket 15, the tip leg portion 15 d of the bracket 15 does not fall off by sliding on the guide member 23. The guided leg 15d of the bracket 15 can be returned to the abutment surface 41 of the other housing 40 when the guide is guided and the shaking such as an earthquake is stopped.

(Modification 3)
In the above-described embodiment, the example in which the cover member 16 is disposed substantially parallel to the fixed surface 31 of the one housing 30 has been described. However, the expansion joint device 10 according to the present invention has a corner as illustrated in FIG. It may be used for parts. That is, you may arrange | position the cover material 16 so that it may orthogonally cross with respect to the fixed surface 32 of one housing 30. FIG.

At this time, as shown in FIG. 9, the distance W1 from the rotation axis of the bracket 15 (the center of the rotation axis portion 13e) to the top surface of the cover member 16 is such that the rotation axis of the bracket 15 It is desirable to make it smaller than the distance W2 to the fixed surface 32. 9B, even if the bracket 15 is rotated so that the end of the cover member 16 on the other housing 40 side moves upward, the cover member 16 is It is possible to make it difficult to interfere with the fixed surface 32 of the one housing 30. In other words, a large movable range of the bracket 15 can be secured, and a greater shaking can be dealt with.
In addition, when using the expansion joint apparatus 10 for a corner part, the frame material 11 and the supporting member 13 as shown in FIG. 10 are used.

  As shown in FIG. 10A, the corner frame material 11 includes a bottom plate portion 11a that abuts the fixed surface 32 of the housing 30, a rib-like support surface portion 11b that protrudes from the bottom plate portion 11a, and a support surface portion 11b. And a back surface portion 11f protruding from the bottom plate portion 11a so as to face each other. The support surface portion 11b protrudes obliquely from the bottom plate portion 11a, and is inclined so as to approach the hook-shaped portion 11c as it goes upward (tip). The back surface part 11f protrudes substantially perpendicularly from the bottom plate part 11a. On the inner side of the back surface portion 11f, a hook-shaped portion 11c protruding in a substantially L shape is formed. Further, a sheet fixing portion 11e for holding the end portion of the water-stop sheet 22 is formed at the tip of the back surface portion 11f.

  As shown in FIG. 10A, the corner support member 13 includes a leg portion 13a having a substantially U-shaped cross section, a neck portion 13f protruding from the leg portion 13a, and a circle provided at the tip of the neck portion 13f. And a rod-shaped rotation shaft portion 13e. The leg portion 13a is a portion that engages with the support surface portion 11b and the flange-like portion 11c of the frame member 11 described above, a screw fixing surface 13b that engages with the support surface portion 11b, and a rear leg portion 13g that opposes the back surface portion 11f. Are provided opposite to each other. The screw fixing surface 13 b is formed so as to be inclined with respect to the fixing surface 32 of one housing 30 when the support member 13 is attached to the frame material 11. On the outside of the rear leg portion 13g, a hooking portion 13c that engages with the hook-like portion 11c is formed in a substantially L shape.

  When engaging the frame member 11 with the support member 13, as shown in FIG. 10B, the hook portion 13c of the support member 13 is hooked on the hook-like portion 11c of the frame member 11, and in this state, the hook portion 13c. As shown in FIG. 10C, the support member 13 is swung with the support member 13 being pivoted, and the support surface portion 11b and the screw fixing surface 13b are overlapped and engaged.

  When the first engagement portion 19a of the spring member 19 is engaged with the corner support member 13, the engagement is performed inside the leg portion 13a of the support member 13, as shown in FIG. Thereby, when the urging force of the spring acts on the support member 13, a force for engaging the support member 13 with the frame material 11 works. That is, as shown in FIG. 10C, when the biasing force of the spring acts on the first engagement portion 19a, the leg portion 13a of the support member 13 engages with the frame member 11 (FIG. 10C). To the right). For this reason, the urging force of the spring member 19 acts to make it difficult for the support member 13 and the frame material 11 to be disengaged.

(About fall prevention wire)
In each of the above-described embodiments, a wire 25 for preventing the cover material 16 from falling may be attached. For example, as shown in FIG. 11, the wire stopper 26 is fixed to the cover member 16 with a metal fixing screw 27 and the wire stopper 26 is also fixed to the other housing 40. If both ends of the wire 25 are fixed to the pair of wire stoppers 26, even if the cover member 16 is detached from the bracket 15, the fall can be prevented.

  Note that, when the wire stopper 26 is fixed to the other housing 40, if the holder fixing screw 21 is used to fix the wire stopper 26 together with the seat holder 20, the number of parts and the amount of work can be reduced at the same time.

(Other)
In the embodiment described above, the support member 13 is fixed to one housing 30 with the first engagement portion 19a engaged with the support member 13, and then the second engagement portion 19b is engaged with the bracket 15. However, the present invention is not limited to this, and the first engagement portion 19a and the second engagement portion 19b may be reversed. That is, the support member 13 is fixed to one housing 30 with the second engagement portion 19b engaged with the bracket 15, and then the first engagement portion 19a is engaged with the support member 13. Also good.

  In the above-described embodiment, the rotation shaft portion 13e that rotatably supports the bracket 15 is formed integrally with the support member 13. However, the present invention is not limited thereto, and the rotation shaft portion 13e is not limited to the bracket. 15 may be integrally formed.

(Summary)
As described above, according to the present embodiment, the spring member 19 includes two engaging portions, and only one of the two engaging portions is engaged with the supporting member 13 or the bracket 15. After fixing 13 to one housing 30, the other engaging portion that is not engaged can be engaged with the support member 13 or the bracket 15. According to such a configuration, it is not necessary to perform attachment with the spring biasing force applied as in the prior art, and the spring biasing force can be applied after the bracket 15 is attached. There is no need to put effort, and the work can be facilitated.

  The spring member 19 includes a coil portion 19d provided between the first engagement portion 19a and the second engagement portion 19b, and the coil member 19d supports the bracket 15 so as to be rotatable. The dynamic shaft portion 13e is inserted. According to such a configuration, since the spring member 19 and the rotation shaft portion 13e of the bracket 15 are concentric, smooth rotation can be realized. Further, since the rotating shaft portion 13e is inserted into the coil portion 19d of the spring member 19, the rotating shaft portion 13e serves as a guide rod, and there is no concern about the buckling of the coil portion 19d.

  A pivot shaft 13e that pivotally supports the bracket 15 is formed integrally with the support member 13 or the bracket 15. According to such a configuration, the rotating shaft portion 13e can be formed of a shape member, the number of parts can be reduced, and there is no fear of insufficient strength.

  The frame member 11 is attached to the one housing 30 and engages with the support member 13, and the support member 13 is urged in the engagement direction with the frame member 11 by the spring member 19. Yes. According to such a configuration, when the two engaging portions of the spring member 19 are engaged, a force for closing the bracket 15 by the second engaging portion 19b acts and the first engaging portion 19a. As a result, a force for engaging the support member 13 with the frame material 11 acts, so that the support member 13 can be more firmly fixed to the frame material 11.

  In addition, the support member 13 includes a screw fixing surface 13b that abuts against a part of the frame material 11 and is fixed by screws, and the screw fixing surface 13b is inclined so that the screws can be easily fixed. it can.

  Further, when the cover member 16 is disposed substantially parallel to the fixed surface 31, the pivot shaft of the bracket 15 is positioned between the cover member 16 and the fixed surface 31. The position of the pivot shaft of the bracket 15 can be brought as close as possible to the end of the cover member 16 (the end on the one housing 30 side). As a result, a large movable range is secured when the bracket 15 is rotated so that the opposite end of the cover member 16 (the end on the other housing 40 side) moves upward, and it corresponds to greater shaking. be able to.

  Further, when the cover member 16 is arranged so as to be substantially orthogonal to the fixed surface 31, the distance W1 from the rotation axis of the bracket 15 to the top surface of the cover member 16 is the rotation of the bracket 15. If it is formed so as to be smaller than the distance W2 from the moving shaft to the fixed surface 31, the rising portion is not provided in the top surface direction of the cover material 16, so that interference between the cover material 16 and the fixed surface 31 occurs. Can be difficult. Thereby, the movable range when the bracket 15 rotates so that the edge part of the cover material 16 by the side of the other housing 40 may move upwards is ensured, and it can respond to a bigger shaking.

DESCRIPTION OF SYMBOLS 10 Expansion joint apparatus 11 Frame material 11a Bottom plate part 11b Support surface part 11c Cage-shaped part 11d Leg part 11e Seat fixing part 11f Back surface part 12 Frame material attachment screw 13 Support member 13a Leg part 13b Screw fixing surface 13c Hook part 13d Shoulder part 13e times Dynamic shaft portion 13f Neck portion 13g Rear leg portion 14 Support member mounting screw 15 Bracket 15a Bearing portion 15b Spring receiving portion 15c Flat portion 15d Tip leg portion 15e, 15f Split piece 16 Cover material 16a Top surface portion 16b Rising portion 16c, 16d Split cover 17 Weather strip 18 Cover fixing screw 19 Spring member 19a First engagement portion 19b Second engagement portion 19c Release end portion 19d Coil portion 20 Sheet holder 20a Sheet holding portion 21 Holder mounting screw 22 Water stop sheet 23 Guide material 25 Ear 26 Wire clamp 27 Bracket fixing screw 30 One housing 31, 32 Fixed surface 40 Other housing 41 Contact surface G Gap W1 Distance from the pivot axis of the bracket to the top surface of the cover member W2 Rotary shaft of the bracket Distance from the fixed surface of one housing to

Claims (7)

An expansion joint device that covers the gaps between the housings,
A support member fixed to the fixing surface of one of the housings;
A bracket rotatably attached to the support member;
A cover material supported by the bracket and covering the gap portion;
A spring member that biases the bracket in a direction in which the cover material covers the gap portion;
A frame member attached to the one housing and engaged with the support member;
With
The spring member includes two engagement portions, a first engagement portion that engages with the support member, and a second engagement portion that engages with the bracket,
A unit in which only one of the two engaging portions is engaged with the support member or the bracket and the support member , the bracket, and the spring member are assembled in advance in a state where the biasing force of the spring member is not working. After being fixed to the frame material , the other engaging portion formed by using the release end portion of the spring member can be expanded to the left and right to be engaged with the support member or the bracket. Expansion joint device.   The spring member includes a coil portion provided between the first engagement portion and the second engagement portion, and a rotation shaft portion that rotatably supports the bracket is inserted into the coil portion. The expansion joint device according to claim 1, wherein   The expansion joint device according to claim 1, wherein a rotation shaft portion that rotatably supports the bracket is formed integrally with the support member or the bracket. Before Symbol support member is characterized by being urged by the spring member in the direction of engagement with the frame member, expansion joints according to any one of claims 1 to 3. The frame material includes a bottom plate portion that comes into contact with a fixed surface of the one casing, a rib-like support surface portion that protrudes from the bottom plate portion, and a flange-like portion that protrudes from the bottom plate portion so as to face the support surface portion. With
The support member includes a screw fixing surface that abuts on the support surface portion and is fixed by screws, and a hook portion that engages with the hook-shaped portion ,
With the hook portion hooked on the hook-shaped portion, the support member is swung with the hook portion serving as a fulcrum so that the support surface portion and the screw fixing surface can be overlapped and engaged. wherein the is, expansion joints according to any one of claims 1 to 4.   The said cover material is arrange | positioned substantially parallel with respect to the said fixed surface, The rotation axis | shaft of the said bracket is located between the said cover material and the said fixed surface, The characterized by the above-mentioned. The expansion joint apparatus of any one of Claims.   The cover material is disposed so as to be substantially orthogonal to the fixed surface, and the distance from the pivot axis of the bracket to the top surface of the cover material is greater than the distance from the pivot axis of the bracket to the fixed surface. The expansion joint device according to claim 1, wherein the expansion joint device is formed so as to be smaller.

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