JP2001188467A - Roof truss model - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof truss model which enables a person to experience the structural characteristics of the truss structure and to sensibly understand the truss structure without requiring difficult operation relating to the structural characteristics of the truss structure. SOLUTION: The roof truss structure model 1 has a pair of supporting bases 5 which are disposed apart prescribed intervals, connecting members 2 which form a pair of truss parts 7 so as to constitute an approximately peak shape in an external form, are elongatable and shrinkable in a specified direction and have a display function to display whether the external force relating to these members is compression or tension, direct coupling members 3 which are mounted at their both ends to the respective corresponding junctures 28 of a pair of the truss part 7 and roof-shape members 4 which freely turnably connect the connecting members 2 and direct coupling members 3 existing the both ends of the truss parts 7 to the supporting bases 5 and have the approximately peak shape in the external form above the connecting members 2 formed to the approximately peak shape in the external form. A model base 6 is mounted at the base surfaces of the supporting bases 5 described above.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof truss model capable of visually learning a truss structure of a house hut.

[0002]

2. Description of the Related Art Conventionally, in order to explain how different forces are exerted by members of a truss structure when a vertical load is applied to a roof truss, a panel in which the description and figures are described is used. Or using computer simulation.

[0003] However, in the case of using a panel on which an explanation and a figure are described, there is a problem that it is not easy for a person without specialized knowledge to understand because the figure for explanation is a static figure. . On the other hand, when computer simulation is used, how to deform the truss structure when a certain load is applied is displayed on the screen,
Since it can be moved, it can be understood relatively easily, but it is necessary to input numerical conditions and the like to a computer, it is difficult to operate, and in the simulation on the screen, the truss structure is actually There is a problem that it is not possible to intuitively understand the magnitude of the load applied to the vehicle.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and enables a person having no specialized knowledge to easily understand the structural characteristics of a truss structure, and It is an object of the present invention to provide a roof truss model that allows a user to experience the structural characteristics of the truss structure without any difficult operation and to understand the truss structure sensuously.

[0005]

According to a first aspect of the present invention, there is provided a roof truss model, wherein a pair of pedestals are provided at a predetermined interval, and a pair of trusses are formed so as to have a substantially mountain shape. A plurality of connecting members that can be expanded and contracted in the direction and have a display function of indicating whether the external force of the member is compression or tension, and both ends thereof are attached to corresponding connection portions of the pair of trusses. A first connecting means for connecting the direct connecting member, the connecting member and the direct connecting member of each corresponding connecting portion of the pair of trusses, and the connecting members and the direct connecting members located at both ends of the truss being rotatable with respect to the support base; And a second connection means for connecting to the second connection means.

A roof truss model according to a second aspect is the configuration according to the first aspect, wherein the connecting member having the display function is a tubular body having a hollow inside and an opening at a central portion; A fixed member fixed to one end of the cylindrical body, a movable member disposed at the other end of the cylindrical body so as to be movable toward or away from the fixed rod-shaped member; and a movable member. And a biasing means for biasing the fixing member toward or away from the fixing member.

A roof truss model according to a third aspect of the present invention is the roof truss model according to the first or second aspect, further comprising a connecting member in which one end of the movable member is colored or patterned. is there.

A roof truss model according to a fourth aspect of the present invention is the roof truss model according to any one of the first to third aspects, further comprising a roof member having a substantially mountain-like outer shape above the connecting member formed into a substantially mountain-like shape. It is a feature.

According to a fifth aspect of the present invention, there is provided a roof truss model according to the first to fourth aspects, wherein a model base is attached to a bottom surface of the support base.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A roof truss model 1 according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a roof truss model 1 according to an embodiment of the present invention includes a pair of support bases 5 provided at a predetermined distance from a connecting member 2, a direct connecting member 3, a roof member 4, and a model. And a base 6. Hereinafter, this will be described in more detail.

In the embodiment of the present invention, the connecting member 2 is provided with a plurality of connecting members 2 as shown in FIGS.
Are connected to form a truss portion 7 corresponding to a truss of a house hut. The connecting member 2 is shown in FIG.
As shown in FIG. 5 to FIG. 5, it is configured to include a cylindrical body 8, a fixed member 9, a movable member 10, a screwing member 11, and a spring 12 as a biasing means. The cylindrical body 8 is hollow inside and has an opening 13 at a central portion of an outer surface, and has a thread 14 for attaching the fixed member 9 and the movable member 10 at both inner ends thereof. ing.

As shown in FIGS. 3 to 5, the fixing member 9 is a rod-shaped member having an outer periphery smaller than the inner diameter of the cylindrical body 8, and is attached to one end of the cylindrical body 8. A mounting member 15 having a circumference substantially equal to the outer circumference of the body 8 is provided, and the other end is provided with an insertion hole 16 for inserting a fixing tool such as a screw. The fixing member 9 is attached to the cylindrical body 8 by screwing a screw portion 17 provided on the attaching member 15 with a screw thread 14 of the cylindrical body 8.

As shown in FIGS. 3 to 5, the movable member 10 is a rod-shaped member having an outer periphery smaller than the inner diameter of the cylindrical body 8 like the fixed member 9, and has one end side. A colored display section 18 and a pressing member 19 substantially the same as the inner diameter of the cylindrical body 8 are provided, and an insertion hole 16 for inserting a fixing tool such as a screw is provided at the other end. At this time, the display unit 18 is not limited to a color as long as it can be clearly identified from the opening 13 of the cylindrical body 8, and may be provided with a pattern or the like. In FIGS. 4, 5 and 11 to 13 showing the embodiment of the present invention, the display section 18 is provided with a pattern for convenience.

As shown in FIGS. 3 to 5, the screwing member 11 has an outer periphery substantially equal to that of the cylindrical body 8, and has an insertion hole 20 at the center thereof. One end of the screw portion 2 for screwing with the screw thread 14 of the cylindrical body 8 is provided at one end.
1 is provided. The diameter of the insertion hole 20 is set so that the movable member 10 can be easily inserted and the movable member 10 does not largely move inside the insertion hole 20. It is desirable that the diameter is slightly larger than the outer diameter.

The assembly of the connecting member 2 is performed by
Attachment member 15 of fixing member 9 to thread 14 at one end side
Of the fixing member 9 to the cylindrical body 8
After attaching the spring 12, the spring 12
After the movable member 10 is inserted into the cylindrical body 8 from the holding member 19 side, the screwing member 11 is inserted from the other end of the movable member 10 and the other end side of the cylindrical body 8 is inserted. This is done by screwing and attaching to the screw thread 14 of FIG. Thereby, the movable member 10 can move in a direction approaching or separating from the fixed member 9.

As shown in FIG. 6, reinforcing members 22 are attached to both ends of the connecting member 2 for reinforcement, as shown in FIG. As shown in FIG. 7, the reinforcing member 22 is provided at one end thereof with an insertion hole 23 into which the other end of the fixed member 9 or the movable member 10 is inserted. Insertion hole 24 having
Is provided. The other end has an extended portion 25 formed by partially extending one end thereof, and is provided with an insertion hole 26. As shown in FIG. 7, the other end of the fixed member 9 and the other end of the movable member 10 are connected to the insertion hole 2 until the insertion hole 16 and the insertion hole 24 overlap.
3 is carried out by screwing the fitting screw 27 into the fitting 3. The diameter of the insertion hole 23 is such that the other ends of the fixed member 9 and the movable member 10 can be easily inserted, and the other ends of the fixed member 9 and the movable member 10 In order not to move largely inside, it is desirable that the diameter is slightly larger than the outer diameter of the other end of the fixed member 9 and the movable member 10. The material of the connecting member 2 is iron,
Stainless steel, metals such as aluminum, synthetic resins such as acrylic resin, various things such as wood can be used,
Here, stainless steel is used.

The truss portion 7 is configured so that the outer shape is substantially mountain-shaped by the connecting member 2 so as to form a so-called true shed hut, and the vertical member is a straight or sandwiched bundle member, and the horizontal member is a straight member. The lumbar or eaves and the diagonal member correspond to the joint palm or the direction. Fig. 1
As shown in FIG. 8, the connection is established by inserting a screw 27 into the insertion hole 16 provided at the end of the connecting member 2 and the insertion hole 26 provided at the other end of the reinforcing member 22. A portion 28 is formed. The truss part 7
Is not limited to the true shed hut type according to the embodiment of the present invention, but may be the twin shed truss type or another truss type according to the actual shape of the shed set.

As shown in FIG. 2, both ends of the direct connection member 3 are attached to corresponding connection portions 28 of a pair of truss portions 7 formed in a substantially mountain shape, and the pair of truss portions 7 are integrated. It is a columnar body having a constant cross-sectional area and corresponds to a girder part in a house hut assembly. The direct connection member 3 is provided with a screw hole 29 at the center thereof over the entire length in the length direction, and is configured to be attached to the inside of the connection portion 28 of the truss portion 7 at both ends. Therefore, in the present embodiment, as shown in FIGS. 8 and 9, a screw 27 is screwed into the screw hole 29 in a state where the screw 27 is inserted into the insertion holes 16 and 26 of the connection portion 28 of the truss portion 7. It is fixed by tightening. The cross-sectional shape of the direct connection member 3 can be various shapes such as a circle and a square. The means for fixing the directly connected member 3 is not limited to this, and may be another completely different fixing means.

As shown in FIGS. 1 and 2, the support base 5 is a columnar body having a constant cross-sectional area, and is formed so as to have the same length as the direct connection member 3 in the depth direction. Of the eaves. Although the cross-sectional shape of the support table 5 is rectangular here, it can be of various shapes such as trapezoid, and various materials such as synthetic resin and wood can be used as the material. Uses resin. As shown in FIGS. 2 and 9, fastening pieces 30 each having a substantially L-shaped cross section are attached to the support base 5 at opposite ends thereof in opposite directions. 7 is attached to the support base 5. The fixing piece 30 is attached so that the truss portion 7 is rotatable at both ends.
The mounting hole 32 formed in the vertical portion 31 of the screw 2 overlaps with the screw hole 29 of the direct connection member 3, the insertion hole 16 of the connecting member 2, and the insertion hole 26 of the reinforcing member 22.
7 is screwed from the outside of the fastening piece 30 and attached,
The screw 27 is screwed into a mounting hole 34 formed in the horizontal portion 33 of the fastening piece 30 from above, and the fastening piece 30 is mounted on the upper surface of the support base 5. The material of the fastening piece 30 is not particularly limited, and here, the same acrylic resin as that of the support table 5 is used.

The roof member 4 has a substantially chevron shape.
As shown in FIG. 1, a plurality of vertical members 35 correspond to a roof portion of the building and are parallel to the center of the truss portion 7.
Are provided at predetermined intervals. The shape of the roof member 4 is adapted to the shape of the truss portion 7, and various materials such as synthetic resin and wood can be used as the material, but acrylic resin is used here. The vertical member 35 corresponds to a purlin in a hut assembly, and a square pillar 36 having a hollow inside is attached to the other end.
The square pillar 36 is formed by joining four rectangular pieces, and the direct connection member 3 is inserted therein. Thereby, the roof member 4 and the truss portion 7 and the direct connection member 3 are integrated. The square pillar 36
In order to cope with the movement of the direct-coupling member 3 at the time of deformation, there is a configuration in which a space is provided in the width direction except for the central portion.

The model table 6 is a substantially rectangular parallelepiped, and the support table 5 is fixed on the upper surface thereof. The same acrylic resin as that of the support table 5 is used here as the material thereof. The size is not particularly limited, but is desirably large enough to be easily carried by one person.

Usually, the truss structure has a property that the shape does not collapse unless the members and the connection parts are broken by an external force.
However, in the roof truss model 1 according to the embodiment of the present invention, both ends of the truss portion 7 are rotatable in order to clearly display the external force applied to each member, and do not support a horizontal load. , Only the load in the vertical direction is supported, and each member is deformed only by the load in the vertical direction. At this time, since a compressive force is applied to the diagonal member of the truss portion 7, the connecting member 2 having the internal structure shown in FIG. 4 is arranged, while a tensile force is applied to the horizontal member and the vertical member of the truss portion 7. Therefore, the connecting member 2 having the internal structure shown in FIG. 5 is arranged, and the roof truss model 1 is assembled. Accordingly, the roof truss model 1 according to the embodiment of the present invention is a model suitable for learning the structural characteristics of the truss structure.

In the roof truss model 1 according to the embodiment of the present invention, as shown in FIG. 1, the model table 6 is arranged so that the truss portion 7 and the roof member 4 are horizontal, and the truss So that the support 7 and the roof member 4 are horizontal and at both ends of the truss.
A space is formed below the truss portion 7 by rotatably connecting the truss portion 7, and when a load is applied from above the roof member 4, the deformation of the truss portion 7 can be easily visually recognized. Can be.

The roof truss model 1 according to the embodiment of the present invention configured as described above is used as follows. A load F is applied to the vicinity of the center of the roof member 4 from above, and the deformation of the truss portion 7 and the external force applied to each connecting member 2 are visually recognized. That is, as shown in FIG. 10, when the load F is applied, both ends of the truss part 7 rotate, and the roof truss model 1 is deformed, and as shown in FIG. The display section 18 appears on the screen 13 and it is possible to visually recognize whether an external force of compression or tension is applied.

At this time, a compressive force is applied to the oblique member of the truss portion 7, and as shown in FIG. 12, the movable member 10 of the connecting member 2 approaches the fixed member 9 side, and the cylindrical body 8 The display section 18 at one end of the movable member 10 appears in the opening 13 of the truss section 7, and the user can
It can be visually recognized that a compressive force is applied. Further, a tensile force is applied to the horizontal and vertical members of the truss portion 7, and FIG.
As shown in the figure, the movable member 10 of the connecting member 2 is separated from the fixed member 9, the display section 18 at one end of the movable member 10 appears in the opening 13 of the cylindrical body 8, and the user can use the truss. It can be visually recognized that a tensile force is applied to the horizontal and vertical members of the part 7, and it is possible to learn what external force is applied to each member of the truss structure.

[0026]

As described above, according to the first aspect of the present invention,
According to the roof truss model described in the above, while forming a pair of trusses so as to be substantially mountain-shaped, with a pair of supports provided at predetermined intervals, the truss can be expanded and contracted in a certain direction and its members A plurality of connecting members having a display function of displaying whether the external force is compression or tension, a direct connection member having both ends attached to corresponding connection portions of the pair of trusses, and positions at both ends of the truss. By connecting the connecting member and the direct-connecting member to be rotatable with respect to the support base, what kind of external force is applied to each member can be easily understood even by a person without specialized knowledge. In addition, there is an advantage that the structural characteristics of the truss structure can be felt and sensed without requiring a difficult operation.

Further, according to the roof truss model of the second aspect of the present invention, in the connecting member, a cylindrical body having a hollow inside and an opening at a central portion, and fixed to one end of the cylindrical body. A fixed member, a movable member disposed at the other end of the cylinder so as to be movable toward or away from the fixed member, and biasing the movable member toward or away from the fixed member. With the biasing means, when the external force is applied, the movable member moves in a direction to approach or separate from the fixed member, so that the roof truss model can be deformed without breaking the entire balance. There are advantages. Also, when the user looses or releases his / her hand, there is an advantage that the restoring force of the urging means inside the cylindrical body returns to a stationary state and does not bother the user.

[0028] According to the roof truss model according to claim 3 of the present invention, the color or pattern is applied to one end of the movable member, so that when a load is applied to the roof truss model from above, the connecting member is not connected. The appearance of the color or the pattern at the opening of (1) has an advantage that it is easy to visually recognize whether an external force of compression or tension is applied to each of the connecting members. In addition, there is an advantage that even a person who does not have specialized knowledge can quickly and visually learn with familiarity.

According to the roof truss model according to the fourth aspect of the present invention, the user is provided with a roof member having a substantially mountain-shaped outer shape above the truss portion formed in a substantially mountain-shaped shape. Not only can you specifically image the roof,
There is an advantage that an external force can be easily applied, and the roof truss model can be integrally held by inserting the direct connection member into the square pillar provided on the roof member.

According to the roof truss model according to claim 5 of the present invention, the model truss is attached to the bottom surface of the support base, so that the roof truss model can be easily moved and a load when a load is applied. There is an advantage that stability can be increased.

[Brief description of the drawings]

FIG. 1 is a front view showing a roof truss model of the present invention.

FIG. 2 is a side view showing a roof truss model of the present invention.

FIG. 3 is a front view showing a connecting member of the roof truss model of the present invention.

FIG. 4 is an enlarged cross-sectional view taken along line AA of a connecting member corresponding to a compressive force in the connecting members of FIG. 3;

FIG. 5 is an enlarged cross-sectional view taken along line AA of a connecting member corresponding to a tensile force among the connecting members of FIG. 3;

6 is a front view showing a state in which a reinforcing member is attached to the connecting member of FIG. 3;

FIG. 7 is an enlarged cross-sectional view taken along the line BB of FIG. 6 from which an intermediate portion is omitted.

FIG. 8 is an enlarged sectional view taken along the line CC of FIG. 1;

FIG. 9 is an enlarged cross-sectional view taken along a line DD in FIG. 1;

FIG. 10 is a front view showing an example of a use state of the roof truss model of the present invention.

11 is an enlarged view of a portion E of FIG. 10;

12 is a partially enlarged cross-sectional view taken along the line AA showing an example of a use state of a connecting member corresponding to a compressive force among the connecting members of FIG. 3;

13 is a partially enlarged cross-sectional view taken along the line AA showing an example of a use state of the connecting member corresponding to the tensile force among the connecting members of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof truss model 2 Connecting member 3 Direct connection member 4 Roof member 5 Support stand 6 Model stand 7 Truss part 8 Cylindrical body 9 Fixed member 10 Movable member 11 Screw member 13 Opening 22 Reinforcement member 28 Connection part 30 Fastening piece 35 Vertical Member 36 Square pillar

Claims (5)

[Claims] 1. A pair of support bases provided at a predetermined interval and a pair of trusses formed so as to have a substantially mountain-like outer shape, and are capable of expanding and contracting in a certain direction, and the external force of the member is compressed or A plurality of connecting members having a display function of indicating which one of the trusses is connected, a direct connection member having both ends attached to corresponding connection portions of the pair of trusses, and a connection member and a direct connection of each connection portion of the truss A roof truss model comprising: first connecting means for connecting members; and second connecting means for rotatably connecting a connecting member and a directly connected member located at both ends of the truss to the support. 2. A connecting member having the display function, wherein a cylindrical member having a hollow inside and an opening at a central portion, a fixing member fixed to one end of the cylindrical member, and a connecting member other than the cylindrical member. A connecting member comprising: a movable member disposed at an end so as to be movable toward or away from the fixed member; and urging means for urging the movable member toward or away from the fixed member. 2. The method according to claim 1, wherein
The roof truss model described in. 3. A connecting member having a color or a pattern at one end of the movable member.
Or the roof truss model according to 2. 4. The roof truss model according to claim 1, further comprising a roof member having a substantially mountain shape above the connecting member formed in a substantially mountain shape. 5. The roof truss model according to claim 1, wherein a model base is attached to a bottom surface of the support base.