JP2007204931A - Joist keeper, joist system, and double floor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a joist system capable of having difficulty making a fall in a stable state, facilitating the height adjustment and having the excellence in workability and strength without having any deflection in a joint between both joist materials. <P>SOLUTION: The joist materials forming a groove in the longitudinal direction in the side face are consecutively provided. A joist keeper supporting a connecting section of each joist material and a rise section is formed in the upper surface of a joist cross-piece of the joist keeper supporting an intermediate section of the joist material, and a projected stripe fitting to the groove of the joist material is provided to the upper part thereof. Assembly of the joist system is easy, and since the end sections of the adjoining joist materials are supported by one joist keeper, the height adjustment becomes easy. Since the end section of the joist material is supported by the joist keeper, the creak of an upper floor is prevented, and it is excellent in strength. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joist system that is mainly constructed on a concrete floor such as concrete of an apartment house, a joist support that supports joists in the joist system, and a double floor in which flooring is pasted on the joist system. .

  A double floor using a joist system is described in Patent Document 1 below, for example. The double floor is constructed, for example, by installing joist units whose height can be adjusted on a concrete floor such as concrete at a predetermined interval and attaching an upper floor material thereon. Of the joists, those installed on the wall are called konjo. There is also a method in which a joist is installed near the wall, a base material made of foamed plastic such as expanded polystyrene is applied to the center portion of the floor in place of the joist, and an upper floor material is stuck on the joist and the base material.

FIG. 16 is a plan view and a side view showing an example of a joist system that has been conventionally used. In this case, the same joist unit 30 as the joist unit used for the central part of the floor is arranged side by side on the wall. The joist unit 30 has through-holes 32 formed in the joist member 31 at predetermined intervals, a bolt receiver 33 having a female screw on the lower surface is attached with a screw, the support bolt 3 is screwed to this, and the joist member 31 is attached with a plurality of support bolts. It is to support (FIG. 17). The height can be adjusted by rotating the support bolt.
Japanese Patent Laid-Open No. 10-245964

The conventional joist construction as described above has the following problems.
(Ii) When a joist unit is manufactured, through holes are formed in the joist material at predetermined intervals, and bolt receivers are attached with screws or the like, so the manufacturing work is complicated and takes time.
(B) The joist unit tends to fall down during construction, it is very unstable and work efficiency is poor.
(Ha) There is no continuity between the joist units, and the height of the support bolts of the joist units on both sides must be adjusted at the joint, so there are many support bolts to adjust the height, and it takes time to adjust the height. Take it.
(Ii) Since the joist unit is not continuous, the joist material is easily bent when a load is applied to the joint of the joist material, and the upper floor of the portion is easily squeezed.

  INDUSTRIAL APPLICABILITY The present invention is stable, hard to fall, easy to adjust in height, does not cause bending at the joints of the joists, and has excellent workability and strength, and a double floor using the joists system. The issue is to develop.

[Claim 1]
The present invention includes a joist support plate having a female screw hole penetrating in the vertical direction and a support bolt screwed into the female screw hole, and both sides of the female screw hole on the upper surface of the joist support plate are used as joist support surfaces. The joist is characterized in that an upright portion is formed at both ends in the joist width direction of the support surface, and a ridge projecting inward from the upper portion of the upright portion so as to engage with a groove on both sides of the joist material. It is a receiving tool.

[Claim 2]
Further, the present invention has a joist support plate having a female screw hole penetrating in the vertical direction, and a support bolt screwed into the female screw hole, a side portion of the female screw hole on the upper surface of the joist support plate as a joist support surface, An upright portion is formed on the side of the joist support surface opposite to the female screw hole, and a protrusion is protruded inward from the upper portion of the upright portion so as to engage with a groove on the side face of the joist material. It is a joist receiving tool.

[Claim 3]
The present invention also includes a joist support plate having a female screw hole penetrating in the vertical direction and a support bolt screwed into the female screw hole, and both sides of the female screw hole on the upper surface of the joist support plate are used as joist support surfaces, The joist support surface of the joist is formed with ridges at both ends in the joist width direction, and ridges are projected from the upper portion of the erection inward so as to engage with grooves on both joists. A joist support characterized in that an upright portion is formed on the side of the support surface opposite to the female screw hole, and a ridge projecting inward from the upper portion of the upright portion so as to engage with a groove on the side face of the joist material. It is a tool.

[Claim 4]
Further, the present invention is a joist system for supporting a plurality of joists at the connecting portion thereof with the joist support of claim 1, wherein the joists have a longitudinal groove formed on both sides, and the connection In the joist system, the groove of the joist material adjacent in the section is engaged with the protrusion of the joist support.

[Claim 5]
Further, the present invention is a joist system that supports a plurality of joists in the connecting portion thereof with the joist support of claim 1 or 3, wherein the joists have a longitudinal groove formed on both sides, A portion where the adjacent joists are connected in a straight line in the connecting portion is supported by the joist support of claim 1, and a portion where the adjacent joists are connected at a right angle is supported by the jojo support of claim 3, The joist system is characterized in that the groove is engaged with the protrusion at each connection portion of the joist material.

[Claim 6]
Further, the present invention provides the joist system according to claim 4 or 5, wherein an intermediate portion of at least one joist of the joists is supported by the joist support of claim 2, and the groove of the joists is the claim. It is a joist system characterized by being engaged with the protrusion of the joist support of item 2.

[Claim 7]
Moreover, this invention is a double floor characterized by sticking the flooring on the joist system in any one of Claim 4, 5 or 6.

  In the joist support of claim 1, the joists are linearly connected to the ribs on both sides of the female screw hole, thereby making it possible to manufacture the joist system very easily. .

  The joist support of claim 2 can be attached by engaging the groove of the joist with the ridge at the middle part of the joist, and the joist can be easily reinforced. This joist support can be easily attached to an arbitrary position of the joist material intermediate part.

  The joist support of claim 3 can connect the joists to a right angle by engaging the grooves of the joists respectively on the ridges on both sides of the female screw hole, so that the joist system can be manufactured very easily.

  The joist system according to claim 4 can be easily manufactured by linearly connecting the joist members by engaging the groove of the joist member with the protrusion of the joist support of claim 1. Since the ends of adjacent joists are supported by a single joist support, the heights of both joists can be adjusted by adjusting the height of each joist support. Work becomes easy. Further, since the end portion of the joist is supported by the joist support, the end portion of the joist does not bend, the creaking of the upper floor is prevented, and the strength is improved.

  The joist system according to claim 5 can be easily manufactured by connecting the joists to a straight line or a right angle by fitting the groove of the joist material to the protrusion of the joist support of claim 1 or 3. . Since the ends of adjacent joists are supported by a single joist support, the heights of both joists can be adjusted by adjusting the height of each joist support. Work becomes easy. Further, since the end portion of the joist is supported by the joist support, the end portion of the joist does not bend, the creaking of the upper floor is prevented, and the strength is improved.

  In the joist system of claim 6, the joist member of claim 2 is engaged with and attached to the groove of the joist member in the middle portion of the joist material to reinforce the joist material. Even so, the strength of the joist system can be secured. The joist support of claim 2 can be easily attached to an arbitrary position of the joists. In this joist system, the support bolts at the end of the joists and the support bolts at the middle of the joists are not in a straight line, so the joist system is stable and difficult to fall down during construction, making it easy to construct a double floor Can do.

  The double floor of claim 7 can be easily constructed using the joist system of the present invention, and since the end of the joist is supported by the joist support, the joist end does not bend, The creaking of the upper floor is prevented and the strength is improved.

  FIG. 1 is a plan view of the joist support 1 of the embodiment, and FIG. 2 is a side view of the same. The joist support 1 includes a joist receiving plate 2 and a support bolt 3 that are integrally formed of plastic. A female screw hole penetrating in the vertical direction is provided in the center of the joist support plate 2, and the support bolt 3 is screwed into the female screw hole. The joist support plate 2 has a plate shape, and the periphery of the female screw hole is formed thick to maintain strength, and has a boss portion 7 projecting in a cylindrical shape on the lower surface, and a rib for reinforcement on the lower surface. 8 is formed. Both sides of the female screw hole on the upper surface of the joist support plate 2 serve as joist support surfaces 4, and the joist material 24 is supported thereon as shown in FIGS. As shown in FIG. 8, the joist member 24 has grooves 25 formed on both side surfaces. Upright portions 5 are formed at both ends of the joist support surface 4 in the joist width direction, and further, protrusions 6 are formed projecting inward from the upper portions of the upright portions 5 so as to engage with grooves 25 on both sides of the joist material. Yes. In the present invention, the term “engagement” refers to the lower surfaces 6a, 15a of the ridges 6, 15, 21, 23 when the joist member 24 tries to lift upward, as shown in FIGS. , 21a, and 23a are in contact with the bottom surface of the groove 25 of the joist member 24 by 25a to restrict the joisting of the joist. The support bolt 3 is made of plastic or metal, and a minus groove 10 (which may be a plus groove) is formed on the top surface to adjust the height by rotating the bolt. A base portion 9 made of a material to be fitted is fitted.

  The joist member 24 is symmetrical with respect to the central longitudinal line and the central transverse line, and even if it is turned upside down, it has the same shape and can be used without worrying about the distinction between the upper and lower sides. However, the joist of the present invention does not necessarily have line symmetry with respect to the central longitudinal line or the central transverse line.

  FIG. 3 is a plan view of the joist support 11 of the embodiment, and FIG. 4 is a side view of the same. The joist support 11 includes a joist receiving plate 12 and a support bolt 3 that are integrally formed of plastic. The joist support plate 2 is provided with a female screw hole penetrating in the vertical direction, and the support bolt 3 is screwed into the female screw hole. The support bolt 3 has the same configuration as the support bolt in FIGS. The joist support plate 12 has a plate shape, and the periphery of the female screw hole is formed to be thick to maintain strength, and has a boss portion 7 projecting in a cylindrical shape on the lower surface, and a rib for reinforcement on the lower surface. 8 is formed. A side portion of the female screw hole on the upper surface of the joist support plate 12 serves as a joist support surface 13, and the joist material 24 is supported thereon as shown in FIGS. An upright portion 14 is formed on the side of the joist support surface 13 opposite to the female screw hole, and a ridge 15 is formed to project inward from the upper portion of the upright portion 14 so as to engage with a groove 25 on the side face of the joist material. As shown in FIG. 11, the upright portion 14 is located at a position where the top surface of the support bolt 3 is exposed to the side of the joist member 24 when the joist material is placed on the joist support surface 13. The legal dimension is the same as or slightly larger than the width of the joist 24 (about 0 to 3 mm).

  5 is a plan view of the joist support 16 of the embodiment, FIG. 6 is a side view of the same, and FIG. 7 is a cross-sectional view taken along line AA in FIG. The joist support 16 comprises a joist receiving plate 17 and a support bolt 3 that are integrally formed of plastic. The joist support plate 17 is provided with a female screw hole penetrating in the vertical direction, and the support bolt 3 is screwed into the female screw hole. The support bolt 3 has the same configuration as the support bolt in FIGS. The joist support plate 17 has a plate shape, and the periphery of the female screw hole is formed to be thick to maintain strength, and has a boss portion 7 projecting in a cylindrical shape on the lower surface, and a rib for reinforcement on the lower surface. 8 is formed. Both sides of the female screw hole on the upper surface of the joist support plate 17 are joist support surfaces 18 and 19, and as shown in FIGS. 12 and 13, raised portions 20 are formed at both ends of the joist support surface 18 in the joist width direction. Further, the protrusion 21 is formed to protrude inward from the upper portion of the upright portion 20 so as to engage with the grooves 25 on both sides of the joist. Further, an upright portion 22 is formed on the opposite side of the other joist support surface 19 to the female screw hole, and further, a protrusion 23 is formed projecting inward from the upper portion of the upright portion 22 so as to engage with a groove 25 on the side face of the joist material. Has been. As shown in FIG. 13, the upright portion 22 is located at a position where the top surface of the support bolt 3 is exposed to the side of the joist material 24 when the joist material 24 is placed on the joist support surface 19. The internal dimensions are the same as or slightly wider than the width of the joists 24 (about 0 to 3 mm).

  9 is a plan view of the joist system of the embodiment, FIG. 10 is a cross-sectional view taken along the line BB in FIG. 9, and FIG. 11 is a cross-sectional view taken along the line CC in FIG. FIG. 5 shows an example in which the joist system of the present invention is applied to the wall W and used as the joist, and the joist material 24 is connected in a straight line. The connection part (end part) of the joist material 24 of FIG. 8 is supported by the joist support 1 of FIG. Further, an intermediate portion of the joist material 24 is supported by the joist support 11 of FIG. Since the groove 25 is provided in the joist member 24 over its entire length, an arbitrary position of the intermediate portion of the joist member 24 can be supported by the joist support 11. Although FIGS. 9-11 showed the case where the joist system of a present Example was used as a thick joist, the joist system of a present Example can be used as a joist system of the center part of a floor other than a joist. Of course.

  FIG. 12 is a plan view of the joist system of the embodiment, and FIG. 13 is a cross-sectional view taken along the line DD in FIG. 12, showing the joist member 24 connected at a right angle. In the portion where the joist member 24 is connected at a right angle, the end portion of the joist member 24 is supported by the joist support 16 of FIG. This joist system is particularly suitable for use as a joist.

  FIG. 14 is a schematic plan view showing an example in which the joist system of the present invention is applied to a room as a joist. In FIG. 14, the joist supports 1, 11 and 16 are represented by small circles for simplification. The joists 24 are all connected by joist supports 1 and 16, and the intermediate portions are supported by the joist supports 11 as appropriate. All joists are not easily bent because both ends are supported by joist supports. Further, since the joist can be cut into a desired size and used, the waste of the joist can be minimized.

  In the joist system of the above embodiment, since the top surface of the support bolt 3 is exposed between the joists or on the sides of the joists, the support bolt is rotated from above with a screwdriver using the minus groove 10. The height can be adjusted.

  FIG. 15 is a cross-sectional view of the double floor of the present invention, in which a floor material (upper floor) is pasted on the joist system of the present invention of FIGS. The floor material is usually composed of a base board 26 and a finishing material 27. The base board is a plywood or a particle board, and the finishing material is a flooring, a carpet, a tatami mat, or the like. In the double floor of the present embodiment, the upper floor supporting member (the center portion of the floor) other than the joist is, for example, a joist system in which the joist materials shown in FIG. Can be arranged. Moreover, it can also be set as the structure similar to the conventional double floor. For example, the joist unit as shown in FIGS. 16 and 17 listed as the conventional example is arranged in the central portion of the frame floor F at a predetermined interval, or the foamed plastic base material described in Patent Document 1 is used. You can also.

It is a top view of joist support 1 of an example. It is a side view of joist support 1 of an example. It is a top view of joist support 11 of an example. It is a side view of joist support 11 of an example. It is a top view of joist support 16 of an example. It is a side view of joist support 16 of an example. It is the sectional view on the AA line in FIG. 3 is a perspective view of a joist member 24. FIG. It is a top view of a joist system of an example. It is the BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is a top view of a joist system of an example. It is the DD sectional view taken on the line in FIG. It is a top view of a joist system of an example. It is sectional drawing of the double floor of an Example. It is the top view and side view of the conventional joist system. It is sectional drawing of the conventional joist system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 joist support 2 joist support plate 3 support bolt 4 joist support surface 5 upright part 6 ridge 7 boss part 8 rib 9 base part 10 minus groove 11 joist support 12 joist support board 13 joist support surface 14 upright part 15 ridge 16 joist support 17 joist support plate 18 joist support surface 19 joist support surface 20 upright 21 ridge 22 upright 23 ridge 24 joist 25 groove 26 base board 27 finishing material 30 joist unit 31 joist 32 through hole 33 bolt W wall F frame floor

Claims (7)

  A joist support plate having a female screw hole penetrating in the vertical direction; and a support bolt screwed into the female screw hole; A joist holder characterized by forming a raised portion at both ends in the width direction and projecting a protrusion from the upper portion of the raised portion inward so as to engage with a groove on both sides of the joist material.   A joist support plate having a female screw hole penetrating in the vertical direction, and a support bolt screwed into the female screw hole, a side portion of the female screw hole on the upper surface of the joist support plate is used as a joist support surface, A joist holder characterized in that an upright portion is formed on the side opposite to the female screw hole, and a protrusion is projected inward from the upper portion of the upright portion so as to engage with a groove on the side face of the joist material.   A joist support plate having a female screw hole penetrating in the vertical direction, and a support bolt screwed into the female screw hole, both sides of the female screw hole on the upper surface of the joist support plate are used as joist support surfaces, and one of the joist support surfaces A rib is formed at both ends in the width direction of the joist, and a ridge is projected from the upper portion of the joist so as to engage with grooves on both sides of the joist, and the female screw of the other joist support surface is formed. A joist holder characterized in that an upright portion is formed on the side opposite to the hole, and a protrusion is projected inward from the upper portion of the upright portion so as to engage with a groove on the side face of the joist.   A joist system for supporting a plurality of joists at the connection portion with the joist support of claim 1, wherein the joists have longitudinal grooves formed on both side surfaces, and the joists adjacent to each other at the connection portion. The joist system, wherein the groove of the material is engaged with the protrusion of the joist support.   It is a joist system which supports a plurality of joists in the connection part with the joist support of Claim 1 or 3, and the joist is formed with a groove in the length direction on both sides, and is adjacent in the connection part The part to which the joists are connected in a straight line is supported by the joist holder of claim 1, and the part to which the adjacent joists are connected at a right angle is supported by the jojo receiver of claim 3, and each connection of the joists The joist system, wherein the groove is engaged with the protrusion.   The joist system according to claim 4 or 5, wherein an intermediate portion of at least one joist of the joists is supported by the joist support of claim 2, and the joists of the joist are supported by the groove of the joists. A joist system characterized by being engaged with the ridge of the tool. A double floor, wherein a flooring material is pasted on the joist system according to any one of claims 4, 5 and 6.

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