JP4712484B2 - Floor buffer structure - Google Patents

Description

  The present invention relates to a floor buffer structure that can perform various events in addition to athletics in gymnasiums, multipurpose halls, and the like.

  Conventionally, a large building such as a gymnasium or the like has a structure in which an elastic member is provided between the floor support device and the floor or a large pulling material is supported by the elastic member so that sufficient exercise performance can be exhibited as a place of exercise. The structure is used to build a floor structure with good elasticity.

  Here, recently, a gymnasium or the like is sometimes used as a venue for various events such as concerts, in addition to being used as a place for regular exercise. When a gymnasium is used as an event venue in this way, a heavy machine such as a forklift runs on the floor of the hall to set the venue, and a large number of people enter and exit the hall. Works. For this reason, in a gymnasium that is also used as an event venue, the floor support device needs to be constructed in advance so that it can withstand an excessive load.

  In this way, the floor structure that can withstand excessive weight is extremely hard and has poor elasticity performance, so it will hurt the legs and legs of the person who exercises, and bruises, injuries, etc. are likely to occur when falling There is also a problem in safety, and sufficient exercise performance cannot be exhibited as a place for normal exercise.

  In contrast, Patent Document 1 discloses a floor bundle foundation as shown in FIG. In this floor bundle foundation, the vibration absorbing material 82 is sandwiched from above and below by a plate-like compression limiting piece 84 and a cover-like compression limiting piece 86, and when this vibration absorbing material 82 causes a predetermined amount of vertical compression. Is a structure in which both compression restricting pieces can come into contact with each other and excessive longitudinal compression of the vibration isolator is prevented. Further, in Patent Document 2, a cushioning material and a regulating member that restricts the deformation amount of the cushioning material are arranged on the large pulling member, and when a load that deforms the cushioning material by a predetermined amount or more is applied from the floorboard, A floor structure in which a load directly acts on the large pulling member via a regulating member is disclosed.

JP-A-7-324418 Japanese Patent No. 2790250

  The floor structures described in Patent Document 1 and Patent Document 2 are configured to mechanically limit the amount of displacement of the elastic member layer that secures elasticity by using the stopper metal. There is a problem in that it is difficult to design, for example, it is necessary to sufficiently ensure the strength of the member that receives the rust and to consider the workability or durability.

  The present invention has been made to solve the above-mentioned problems, and aims to provide a floor cushioning structure that can withstand an excessive load and that exhibits elastic performance during exercise and is excellent in workability. To do.

  In order to solve the above technical problem, the present invention, as shown in FIG. 1, arranges an elastic member 32 on the upper part of the receiving member 30 of the floor support leg 2, and supports the floor board on the elastic member. A floor cushioning structure on which the large pulling material 4 is placed, wherein the receiving member 30 is formed by bending upward from the left and right end portions of the bottom surface portion 40 on which the elastic member 32 is placed; 43 and restricting portions 44 and 45 bent upward from the front and rear end portions of the bottom surface portion 40, the elastic member 32 is placed on the bottom surface portion of the receiving member, and the upper surface is the above A bottom plate portion 56 formed at a position above the upper ends of the restricting portions 44 and 45, and a side plate portion 60 formed above the left and right end portions of the bottom plate portion 56 and inscribed in the side surface portions 42 and 43 of the receiving member. 61, and the large pulling material 4 is placed and held in the elastic member 32. When the compression deformation of the elastic member 32 reaches a predetermined amount due to the load from the large pulling material 4, the large pulling material 4 comes into contact with the restricting portions 44 and 45 of the receiving member and the elastic member 32. The deformation is limited.

  In the floor cushioning structure according to the present invention, the large pulling material 4 is bent inwardly from the top plate portion 62, the side plate portions 64 and 65, and the side plate portions, and is formed on the bottom plate portion 56 of the elastic member 32. It consists of bottom piece parts 66 and 67 to be placed, and is made of a long material having a C-shaped cross section in which openings 68 having a predetermined interval are formed between the bottom piece parts 66 and 67.

  According to the floor cushioning structure of the present invention, the receiving member has the side surface portion and the restricting portion that are bent upward from the bottom surface portion, while the elastic member is formed above the bottom plate portion and the bottom plate portion. When the elastic member reaches a predetermined amount due to a load from a large pulling material placed and held in the elastic member, the side plate is in contact with the side surface of the receiving member. Since the structure in which the elastic member is restricted by the contact of the pulling material is adopted, when the movement is performed on the floor, the impact of the floor is mitigated by the elastic member, and the heavy machine runs on the floor or the floor is loaded with luggage or the like. When an excessive weight acts on the floor, it has high load performance, and the compression of the elastic member is limited to prevent the elastic member from being set or damaged, thus maintaining a high strength floor while maintaining elasticity during movement. In addition to the structure Because it is simple and easy to manufacture, it is economical, and because the large pulling material is held by the receiving member and the regulating part integrated, it has a strong and stable support structure and can be easily constructed. There is an effect.

  According to the floor cushioning structure of the present invention, the elastic member is made of a long material having a C-shaped cross section in which openings of a predetermined interval are formed between the bottom pieces of the large pulling material. Thus, there is an effect that the elastically deformable space is formed, the elastic member can be appropriately elastically compressed, and a good buffering action can be obtained.

Embodiments of a floor buffer structure according to the present invention will be described below with reference to the drawings.
FIG. 1 shows the above-described floor buffer structure, which is a floor structure where various events other than athletics can be performed in a gymnasium, a multipurpose hall or the like. The floor cushioning structure includes a floor support leg 2, a large pulling material 4, a joist material 6, a structural plate material 8, a floor plate 10, and the like.

  The floor support leg 2 includes a support base 20, a support bolt 22, a receiving member 30, an elastic member 32, a fastener 34 including a bolt and a nut, and the like. An upper nut 24, a lower nut 25, a washer 26, and a fastening nut 28 are screwed onto the support bolt 22. The support base 20 includes leg portions 36 that are formed so as to extend downward from the left and right end portions of the upper plate portion 35, and fixed portions that are respectively bent outward from the lower end portions of the leg portions 36. 38.

  As shown in FIG. 2, the receiving member 30 is substantially U-shaped, and has a flat bottom surface portion 40 formed in the center, side surface portions 42 and 43 erected upward from the left and right portions of the bottom surface portion 40, and It has restricting portions 44 and 45 that are erected upward from the front and rear portions of the bottom surface portion 40. The receiving member 30 is formed by bending a steel plate punched into a cross shape by press working.

  When forming the receiving member 30, the rectangular portion at the center of the cross-shaped steel plate is used as a bottom surface portion 40, and the left and right portions of the bottom surface portion 40 are bent upward to form the side surface portions 42, 43. The restriction portions 44 and 45 are formed by bending the front and rear portions of the bottom surface portion 40 upward. Then, in a state where both end portions of the restricting portions 44 and 45 are brought into contact with the end surface portions 46 and 47 of the side surface portions 42 and 43, the end portions of the restricting portions 44 and 45 are the end surface portions of the side surface portions 42 and 43. 46 and 47 are joined by welding (welded portion 48).

  Here, a steel plate having a thickness of 3.2 mm is used for the receiving member 30, and the rising height of the restricting portions 44 and 45 is about 8 mm from the upper surface of the bottom surface portion 40. A circular hole 50 is provided in the center of the bottom surface portion 40 of the receiving member 30, and an insertion hole 52 is provided in the center near the upper portions of the side surface portions 42 and 43. And the hexagonal nut body 31 is attached to the back surface part of the said bottom face part 40 in the state which the said hole part 50 and holes penetrate. The nut body 31 is fixed to the receiving member 30 by caulking (using a caulking nut) or welding.

  As shown in FIG. 3, the elastic member 32 is a member having a U-shaped cross section including a bottom plate portion 56 and side plate portions 60 and 61 that rise upward from left and right ends of the bottom plate portion 56. The elastic member 32 is made of an elastic body such as rubber or synthetic resin. In the elastic member 32, the bottom plate portion 56 is placed on the bottom surface portion 40 of the receiving member 30, and the side plate portions 60 and 61 are inscribed in the side surface portions 42 and 43 of the receiving member 30, respectively. Thus, the elastic member 32 is closely accommodated in the receiving member 30 and is disposed in a stable state.

  Here, a suitable elastic performance is ensured by setting the thickness of the bottom plate portion 56 of the elastic member 32 to 15 mm. Further, since the height of the restricting portions 44 and 45 of the receiving member 30 is about 8 mm from the upper surface of the bottom surface portion 40, the upper surface of the bottom plate portion 56 of the elastic member 32 is the upper end of the restricting portions 44 and 45. It is located about 7 mm above.

  The large pulling material 4 is a steel material having a C-shaped cross section including an upper surface plate portion 62, side surface plate portions 64 and 65, and bottom piece portions 66 and 67 bent inward from the side surface plate portions, respectively. Between the bottom piece portions 66 and 67, an opening portion 68 having a predetermined interval is formed. The opening ratio of the opening 68, that is, the ratio (S / W) of the interval (S) of the opening 68 to the lateral width (W) of the large pulling material 4 is about 40% here. The joist 6 is a steel material having a hat-shaped cross section composed of an upper surface portion, a side surface portion, and a flange portion bent outwardly from the side surface portions.

  The receiving member 30 on which the elastic member 32 is disposed is screwed to the tip end portion of the support bolt 22 via the nut body 31 and is tightened by the fastening nut 28 via the washer 26 from below. At this time, the support bolt 22 screwed into the nut body 31 of the receiving member 30 can be inserted into the hole 50 of the bottom surface portion 40 at the tip, and the receiving nut is tightened at an appropriate position. 30 is fixed to the support bolt 22.

  As for the height of the support bolt 22 of the floor support leg 2, the support bolt 22 in which the upper nut 24 is screwed and the washer 26 is fitted is inserted into the hole provided in the upper plate portion 35 of the support base 20, The lower nut 25 is screwed from below, and the height of the support bolt 22 is adjusted by adjusting the positions of the upper nut 24 and the lower nut 25.

  When constructing the floor cushion structure, the floor support legs 2 are arranged on the floor foundation surface 70 at a predetermined interval, and the fixing portion 38 of the support base 20 is fixed to the foundation surface 70 using an adhesive or the like. The height of each floor support leg 2 is adjusted. Then, the large pulling material 4 is installed between the floor support legs 2 and placed on the bottom plate portion 56 of the elastic member 32 in the receiving member 30 with both bottom piece portions 66 and 67 facing down.

  After the large pulling material 4 is disposed, the bolts as the fasteners 34 are inserted between the insertion holes 52 provided in the side surfaces 42 and 43 of the receiving member 30, and the nuts are tightened to fix the side surfaces 42 and 43 to each other. The large pulling material 4 is nipped and fixed to the receiving member 30 with the pressing force. At this time, the side plate portions 60 and 61 of the elastic member 32 are interposed between the side surface plate portions 64 and 65 of the large pulling material 4 and the side surface portions 42 and 43 of the receiving member 30 to elastically hold the large pulling material 4. To do. Further, on the upper part of the large pulling material 4, joists 6 are arranged at predetermined intervals in a direction orthogonal to the large pulling material 4, and the structural plate material 8 and the floor board 10 are laid on the joists 6. Finish the floor.

  FIG. 4 shows an elastic compression state of the floor support leg 2 due to a load applied to the floor having the floor cushion structure. Fig.4 (a) shows the state of the elastic member 32 at the time of no load which hardly applies a load to a floor. In this state, the elastic member 32 is hardly compressed by the pressing of the large pulling material 4.

  FIG. 4B shows the state of the elastic member 32 when an impact load during human movement or a load such as equipment equivalent to this is applied to the floor. In this state, the bottom plate portion 56 of the elastic member 32 is slightly elastically compressed by the pressing of the bottom piece portions 66 and 67 of the large pulling material 4, and the elastic body deformed from the opening portion 68 by this compression deformation bulges (bulging portion 57. ) Is occurring. Thus, the opening 68 secures a space for enabling the elastic body to bulge and deform due to elastic compression. At this time, the large pulling material 4 is not in contact with the restricting portions 44 and 45 of the receiving member 30. For this reason, in the said elastic compression state, the vibration absorption effect of the elastic member 32 is exhibited, and a shock of an exerciser is effectively relieved and buffered.

  FIG. 4C shows a state of the elastic member 32 in an overload in which a heavy load such as a forklift or heavy equipment is applied to the floor. In this state, the bottom plate portion 56 of the elastic member 32 is greatly elastically compressed by the pressure from the large pulling material 4, and the elastic body compressed and deformed from the opening 68 due to this compression deformation is greatly bulged (bulged portion 58). Has occurred.

  In this state, the large pulling material 4 sinks greatly and the bottom piece portions 66 and 67 are in contact with the restricting portions 44 and 45 of the receiving member 30. For this reason, further sinking of the large pulling material 4 is restricted, and excessive compression of the elastic member 32 is restricted, thereby preventing damage to the elastic member 32 and improving durability. In addition, the rigid support of the restricting portions 44 and 45 associated with the elastic compression restriction forms a highly rigid floor buffer structure and exhibits excellent load bearing performance.

  Therefore, according to the floor cushioning structure according to the above-described embodiment, since the large pulling material forming the floor is elastically supported by the elastic member, it has a suitable elasticity against the pressing force in sports or the like. Also, when heavy objects such as forklifts move on the floor during events such as exhibitions and concerts, the large pulling material is firmly supported by the restricting part of the receiving member after the elastic member is compressed by a predetermined amount. A rigid floor is built.

  As described above, according to the floor cushioning structure, a floor having good cushioning properties can be obtained as a sports facility such as a soft sword dojo. Because it is maintained, it exhibits high loading performance. In addition, since the U-shaped receiving member of the floor support leg has a simple structure provided with a restricting portion, it is easy to manufacture and excellent in economic efficiency, and it is possible to select an elastic member having high elasticity. It is possible to ensure a high level of elasticity performance and to perform construction easily.

It is a figure which shows the side surface of the floor buffer structure which concerns on embodiment of this invention. It is a figure which shows the receiving member of a floor support leg, (a) shows a top view, (b) shows a front view, (c) shows a side view, respectively. It is a partial exploded view of a floor support leg. It is a figure which shows the effect | action of a floor buffer structure, (a) is a lightweight load, (b) is a load at the time of exercise etc., (c) shows the state to which the weight load was added. It is a figure which shows the bundle base for floors which concerns on a prior art example.

Explanation of symbols

2 floor support leg 4 large pulling material 30 receiving member 32 elastic member 40 bottom face part 42, 43 side face part 44, 45 regulating part 56 bottom plate part 60, 61 side plate part 64, 65 side plate part 62 top plate part 66, 67 bottom piece part 68 opening

Claims (2)

An elastic member is disposed on the upper part of the receiving member of the floor support leg, and a floor cushioning structure in which a large pulling material that supports the floor board is placed on the elastic member,
The receiving member includes a side part bent upward from left and right ends of the bottom part on which the elastic member is placed, and a restriction bent upward from front and rear ends of the bottom part. Part
Joining both end portions of the restricting portion to the end surface portions of the side portions by welding,
The elastic member is placed on the bottom surface of the receiving member, and the upper surface is formed at a position above the upper end of the restricting portion, and is formed above the left and right ends of the bottom plate. Having a side plate part inscribed in the side part of the receiving member,
When the large pulling material is placed and held in the elastic member, and the compressive deformation of the elastic member reaches a predetermined amount due to a load from the large pulling material, the large pulling material is placed on the restricting portion of the receiving member. A floor cushioning structure characterized in that deformation of the elastic member is restricted by contact.   The large pulling material is formed by bending upward from the top plate portion, the side plate portion, and the side plate portions, respectively, and comprising a bottom piece portion placed on the bottom plate portion of the elastic member, and between the bottom piece portions. The floor cushioning structure according to claim 1, wherein the floor cushioning structure is made of a long material having a C-shaped cross section in which openings having predetermined intervals are formed.

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