JP2013080421A - Installation foundation block for automatic dispenser or the like, and rail material thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire sufficient pull-out strength even when a plastic rail material is used by improving the shape of the rail material to be buried in an installation foundation block and improving the pull-out strength of a bolt.SOLUTION: A plastic rail material to be buried in the installation foundation block for automatic dispensers or the like is provided. The plastic rail material includes: a shaft-part groove that has an open upper end and has the width allowing the sliding of a bolt shaft part; a washer groove the upper end of which is communicated with the lower end of the shaft-part lower end, has the width allowing the sliding of a washer plate inserted into the bolt, and has the width wider than that of the shaft part groove; and a head-part groove the upper end of which is communicated with the washer groove, and has the width allowing the sliding of the bolt head part or a nut and preventing the rotation of the bolt head part or the nut. The upper outer surface of the washer groove is an incline surface downward inclined towards the width-directional outside so as to improve the pull-out strength of the bolt.

Description

  The present invention relates to a foundation block laid on the ground or the like for installing equipment such as a vending machine, and a rail material embedded in the foundation block.

A basic block is known in which a groove on which a bolt such as a bolt is slidable is provided on the upper surface of the block, the bolt is slid in the groove, and the leg of the device is fixed at an appropriate position. Such a basic block is convenient because it can be used in common for various devices having different sizes and positions of legs, and the devices can be easily installed. Such a basic block is disclosed in the following patent document, for example. In these basic blocks, the groove is made of a mold material such as aluminum embedded in the block surface.
JP 2005-316637 A Japanese Patent Laid-Open No. 11-230491 Japanese Utility Model Publication No. 49-89560 Japanese Utility Model Publication No. 2-13921 Japanese Utility Model Publication No. 4-3198 Design Registration No. 1166052

  The conventional basic blocks of Patent Documents 2 to 6 have the following problems. That is, when a force to fall is applied to the equipment due to an earthquake or the like, the force acts on fixing means such as a bolt. At that time, the force (pull-out force) applied to the bolt or the like is received only by the rail material constituting the groove, and an excessive stress is generated in the rail material. Vending machines, in particular, have a considerable weight when combined with the weight of the main unit and the product weight, so the conventional foundation block was extremely vulnerable to secure such equipment during an earthquake. .

  The basic block of the above-mentioned patent document 1 has solved such a problem. This is because, in order from the top, the rail material has a shaft part groove in which the bolt shaft part can slide, a washer groove in which the washer plate inserted in the bolt can slide, and a bolt head (or nut) can slide. It is constituted by a head groove having a width that prevents rotation of the head (or nut), and this rail material is buried deep in the foundation block. As a result, the force acting on the bolt (pull-out force) is transmitted to the concrete of the foundation block via the rail material that constitutes the groove, and the pull-out strength of the bolt is remarkably increased against the pull-out force due to the strength of the concrete. Can be increased.

  The above rail material can be a metal or plastic mold material, but in reality, plastic is significantly less strong than metal, so metal such as aluminum is used, and plastic rail material is used. It has not been.

  In addition, the rail material is obtained by cutting an extruded material into an appropriate length, and both end surfaces are open. Therefore, when it is attached to the mold to be embedded in the foundation block, a packing material is separately attached to both ends so that the concrete does not enter the rail material from the ends.

  An object of the present invention is to improve the shape of the rail material to increase the pull-out strength of the bolt so that a sufficient pull-out strength can be obtained even if a plastic rail material is used.

  Another object of the present invention is to prevent the concrete from entering the rail material without attaching packing material to both ends of the rail material.

[Claim 1]
The present invention is a rail material embedded in an installation base block such as a vending machine,
A shaft groove having a width at which the upper end is open and the bolt shaft portion is slidable, and a washer plate inserted into the bolt is connected to the lower end of the shaft portion groove so that the width is wider than the shaft groove. A washer groove having an upper end communicated with the washer groove, and a head groove having a width in which the bolt head or nut is slidable to prevent rotation of the bolt head or nut, and the upper outer surface of the washer groove Is a rail material made of plastic characterized in that it has an inclined surface with a downward slope toward the outside in the width direction.

  In the rail material of the present invention, as shown in FIG. 2, the upper and outer surfaces of the washer grooves are inclined surfaces having a downward slope of an angle θ toward the outer side in the width direction. θ is preferably 5 ° to 15 °, more preferably 7 ° to 10 °. The chain lines α and β shown in FIG. 13 are the fracture surfaces when the concrete is broken by pulling the bolt upward, and α is θ≈8 ° and β is θ = 0 °. As described above, when the upper and outer surfaces of the washer grooves are downwardly inclined toward the outer side in the width direction, the angle of the cut surface becomes loose, and thus the area of the cut surface increases, and as a result, the pulling strength of the bolt increases. Thus, even if the rail material is made of plastic, sufficient pulling strength can be secured. If the angle θ is too small, the pull-out strength of the bolt will be insufficient, and if it is too large, compression deformation will increase at the thick plastic part, which is not preferable.

[Claim 2]
Further, the present invention is the rail material according to claim 1, wherein all or part of the shaft groove, the washer groove, and the head groove are closed by end plates at both ends of the rail material. The shaft groove, the washer groove, and the head groove do not necessarily have to be closed by the end plate, and depending on the shape of the mounting portion when attached to the mold, the shape of the handle, the shaft groove, It may be sufficient to close a part of the washer groove and the head groove.

  Since the rail material of the present invention is made of plastic, end plates for closing both ends of the shaft groove, the washer groove, and the head groove can be easily provided. By providing the end plates, the concrete does not enter the rail material without attaching packing material to both ends of the rail material.

[Claim 3]
Moreover, this invention is a rail material of Claim 2 in which at least one of the said end plates can be cut off by the weakening line formed in the circumference | surroundings.

  A weakening line is a portion where the thickness is thinner than the surrounding area, and the end plate can be easily cut off by the weakening line, and the shaft groove, washer groove and head groove can be opened on the end face of the block. .

[Claim 4]
Further, the present invention is a box-shaped lower member having a concave groove portion that forms the head groove along the length direction at the center of the bottom plate portion,
At least one of a pair of opposed vertical plate portions, a horizontal plate portion projecting outward from the lower end of each vertical plate portion, a vertical plate portion formed downward from the outer end of each horizontal plate portion, and It consists of an upper member having a connecting part that connects the vertical plate parts and / or the horizontal plate parts and / or the vertical plate parts at the end,
The rail material according to claim 2 or 3, wherein the vertical plate portion of the upper member is formed by being fitted inside the lower member side plate portion.

  By configuring the rail member with two pieces of the lower member and the upper member, the rail member having the end plates of claim 2 and claim 3 can be easily manufactured by injection molding.

[Claim 5]
Moreover, this invention is an installation base block, such as a vending machine, which embedded the rail material in any one of the said Claims 1-4 so that the said shaft part groove | channel may open in the block upper surface. .

  It is desirable to embed the rail material so that the upper end is deeper than the upper surface of the foundation block. An introduction groove is formed from the upper surface of the foundation block to the rail material, and the shaft groove is opened to the upper surface of the block through the introduction groove.

[Claim 6]
The present invention is the basic block according to claim 5, wherein the shaft groove, the washer groove, and the head groove are opened on an end surface of the block by cutting the end plate with the weakening line.

  Since the rail material of the present invention is made of plastic, it can be manufactured at low cost, and the upper and outer surfaces of the washer groove are inclined surfaces, so that the bolt pull-out strength is increased, and even if it is made of plastic, it is sufficiently practical. Endure.

  By configuring the rail material with two pieces of the lower member and the upper member, the rail material whose end is closed with an end plate can be easily manufactured by injection molding. By providing the end plates, the concrete does not enter the rail material without attaching packing material to both ends of the rail material.

  When a weakening line is provided around the end plate, the end plate can be easily cut off by the weakening line, and the shaft groove, the washer groove, and the head groove can be opened on the end surface of the block.

  In the installation basic block of the present invention, since the rail material is made of plastic, the material cost is reduced and the cost is reduced. Further, by using a rail member having an end plate at the end portion, the complicated work of attaching the packing and removing the packing after demolding is unnecessary.

1 is a perspective view of a rail material 1. FIG. 1 is a cross-sectional view of a rail material 1. FIG. It is sectional drawing of the rail material 1 which penetrated the volt | bolt. 3 is a perspective view of a lower member 2. FIG. It is the top view of the lower member 2, and an AA sectional view. 4 is a perspective view of an upper member 3. FIG. It is the top view of the upper member 3, and a BB sectional drawing. It is the top view and side view of the foundation block 4. It is sectional drawing of the foundation block 4. FIG. It is sectional drawing of the formwork 6. FIG. FIG. It is explanatory drawing of a bolt tension test. It is explanatory drawing which shows typically the fracture surface in a bolt tension test.

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.
FIGS. 1-7 is related with the rail material 1 of an Example. The rail material 1 is a combination of a lower member 2 and an upper member 3 each of which is formed by injection molding of plastic. Although the kind of plastic is not particularly limited, for example, polypropylene, ABS resin (including recycled material), and those obtained by adding additives such as talc, calcium carbonate, mica, etc. can be used.

  As shown in FIGS. 2 and 3, the rail member 1 includes a shaft groove 10, a washer groove 11, and a head groove 12 in order from the top. The shaft portion groove 10 is the narrowest groove, and has a width that allows the shaft portion of the bolt 5 to slide along the length direction in the groove. The upper end of the shaft groove opens, and the lower end communicates with the washer groove 11. The washer groove 11 is the widest groove, and has a width in which the washer 50 can slide along the length direction in the groove. The lower end of the washer groove 11 communicates with the head groove 12. The head groove 12 has a width that allows the bolt head or nut to slide and prevents rotation of the bolt head or nut, that is, a width that is larger than the minimum diameter of the bolt head or nut and smaller than the maximum diameter. A hexagonal shape, a square shape, or the like is appropriate for the planar shape of the bolt head or nut.

  The bolt 5 is used for installing and fixing a device such as a vending machine. As shown in FIG. 3, the bolt head may be provided in the head groove 12 and a nut may be screwed onto the bolt tip. On the contrary, a nut may be provided in the head groove 12.

  The upper outer surface of the washer groove 11 is an inclined surface 31a having a downward slope toward the outer side in the width direction. This increases the pullout strength of the bolt.

  4 and 5 relate to the lower member 2. The lower member 2 is formed in a substantially box shape by a bottom plate portion 20, a side plate portion 25 provided on the long side, and end plate portions 22 and 23 provided on the short side. A concave groove portion 21 is formed in the center of the bottom plate portion 20 along the length direction. The head groove 12 is formed by the recessed groove portion 21. A ridge 26 is erected along the length direction on the bottom plate portion 20 slightly inside the side plate portion 25. This is to make it difficult for both members to come off when the lower member and the upper member are combined. A cylindrical pin receiving portion 27 is provided at an end portion (inner end side) in the length direction of the concave groove portion 21. This is for positioning when mounted on the mold. The end plate 23 on one end (outer end side) is formed with a weakening line 24 around it so that it can be easily cut off from the lower member.

  6 and 7 relate to the upper member 3. The upper member 3 is formed from a pair of opposing vertical plate portions 30, a horizontal plate portion 31 projecting outward from the lower end of each vertical plate portion 30, and downward from the outer end of each horizontal plate portion 31. The vertical plate part 32 is connected to the vertical plate part 30 at one end, and the connection part 33b is connected to the horizontal plate part 31 and the vertical plate part 32. A pin receiving portion 34 is formed inside the connecting portion 33b. The upper surface of the horizontal plate portion 31 is an inclined surface 31a, and the lower surface is a horizontal plane. In addition, a plurality of anchor portions 35 are formed on the upper surface of the horizontal plate portion 31 so as to increase the adhesion strength with concrete.

  The vertical plate portion 32 of the upper member 3 is fitted inside the side plate portion 25 of the lower member 2 to assemble and integrate the upper member 3 and the lower member 2. As shown in FIG. 2, the drooping plate portion 32 is fitted between the side plate portion 25 and the protrusion 26. Further, the lower end of the pin receiving portion 34 of the upper member 3 is fitted into the pin receiving portion 27 of the lower member 2. Thereby, the lower member 2 and the upper member 3 are firmly integrated.

  As shown in FIG. 2, the shaft groove 10 is constituted by a vertical plate portion 30, the washer groove 11 is constituted by a bottom plate portion 20, a horizontal plate portion 31, a vertical plate portion 32 and a protrusion 26, and the head groove 12 is It is constituted by the groove portion 21. Further, the end plate 13 is constituted by the end plate portion 22 and the connecting portion 33 a, and the end plate 14 is constituted by the end plate portion 23.

  The rail material 1 is embedded in the foundation block 4 as shown in FIGS. In this embodiment, two rail members are embedded in one foundation block. The upper end of the rail material 1 is located at a position deeper than the upper surface of the foundation block 4, and an introduction groove 41 is formed from the upper surface of the foundation block 4 to the rail material 1, and the shaft groove of the rail material is formed via this introduction groove. An opening is formed on the upper surface of the foundation block 4. In addition, one end (end portion on the end plate 23 side) of the rail material 1 is open to the end face (the handle 42 portion) of the foundation block 4.

  In order to embed the rail material in the foundation block, the concrete is poured after the rail material is attached to the form of the foundation block. 10 and 11 are examples of the basic block formwork. The mold 6 is formed in a state where the foundation block 4 is turned upside down, and is formed in a substantially box shape by a bottom plate 60, a pair of side walls 61 and a end wall 62. The side wall 61 and the end wall 62 are detachable from the bottom plate 60. A handle forming portion 63 is formed on the inner surface of the end wall 62 so as to protrude. A portion of the bottom plate 60 where the rail is mounted is provided with a rod-shaped mounting portion 64 having a substantially trapezoidal cross section. The upper end portion of the mounting portion 64 has a slightly narrow width, and the rail member 1 is mounted on the rail member 1 by fitting the shaft portion groove 10 into the rail member 1. A positioning pin 64a is erected on the inner end portion of the upper surface of the mounting portion 64, and is fitted and positioned on the pin receiving portion 34 of the rail material.

  After mounting the rail material 1 on the mold 6, concrete is poured into the mold and cured. After the concrete is hardened, the side wall 61 and the end wall 62 are removed from the mold, and when the block is further pulled away from the bottom plate 60, the rail material 1 is embedded in the foundation block 4 as shown in FIG. The introduction groove 41 is formed by a mounting portion 64 of the mold. Thereafter, the end plate 14 (that is, the end plate portion 23 of the lower member) is cut off with a weakening line, and one end surface of the rail material is opened to the end surface of the basic block.

  When the equipment is installed, a bolt with a washer is inserted into the rail material and the introduction groove from the end face of the basic block, slides in the groove to an appropriate position, and is fixed with a nut through the attachment portion of the equipment.

  A foundation block in which the rail materials of Examples 1 and 2 and the rail materials of Comparative Examples 1 and 2 were embedded was prepared, and a bolt pull-out test was performed as shown in FIG. Two pillows 71 (with an inner width of 100 mm) are arranged on the test stand 70 of the tensile tester 7, and the foundation block is placed upside down on the pillow 71, and the tip of the bolt 5 is moved downward by the tensile tester 7. I pulled.

  The rail material of Example 1 is made by adding 40% calcium carbonate to polypropylene. The material of the rail material of Example 2 is a recycled material of ABS resin. The material of the rail material of Comparative Example 1 is polypropylene. The material of the rail material of Comparative Example 2 is aluminum. The shapes of Examples 1 and 2 are as shown in FIG. 1 and the like, and the upper and outer surfaces of the washer grooves are inclined surfaces (θ≈8 °). The shape of Comparative Example 1 is as shown in FIG. 1 and others except that the upper and outer surfaces of the washer grooves are not inclined surfaces (θ = 0 °). The thickness of the main part of these plastic rail members is 1.2 mm. Comparative Example 2 is an aluminum extrusion mold material, which has no inclined surface on the upper and outer surfaces of the washer groove, and is a conventional product having a uniform thickness of 1.0 mm.

  Four foundation blocks were prepared for each of the examples and comparative examples, and the breaking load and 2.5 mm displacement load were measured. The average value is shown in Table 1. The breaking load is the maximum load when the bolt is completely pulled out, and the 2.5 mm displacement load (JIS B8562) is the load when the bolt is displaced by 2.5 mm. (All units are kilonewtons)

  As shown in Table 1, although Examples 1 and 2 were made of plastic, both Comparative Example 2 made of aluminum, breakage load, and 2.5 mm displacement load were almost the same. On the other hand, in Comparative Example 1 in which the upper and outer surfaces of the washer grooves are not inclined surfaces, neither the breaking load nor the 2.5 mm displacement load has reached the practical level.

  When the concrete fracture surfaces of Examples 1 and 2 and Comparative Example 1 were compared, as shown schematically in FIG. 13, the fracture surface β of Comparative Example 1 in which the upper and outer surfaces of the washer grooves were not inclined surfaces was an angle. On the other hand, the fracture surface α of Examples 1 and 2 in which the upper and outer surfaces of the washer grooves are inclined surfaces has a relatively gentle angle and a large area. For this reason, it can be estimated that the breaking load and the 2.5 mm displacement load are increased. This is an effect in which the upper outer surface of the washer groove is an inclined surface.

DESCRIPTION OF SYMBOLS 1 Rail material 10 Shaft part groove | channel 11 Washer groove | channel 12 Head part groove | channel 13 End plate 14 End plate 2 Lower side member 20 Bottom plate part 21 Recessed groove part 22 End plate part 23 End plate part 24 Weak line 25 Side plate part 26 Projection 27 Pin support Part 3 Upper member 30 Vertical plate part 31 Horizontal plate part 31a Inclined surface 32 Hanging plate part 33a Connection part 33b Connection part 34 Pin receiving part 35 Anchor part 4 Base block 41 Introduction groove 42 Handle 5 Bolt 50 Washer 6 Form frame 60 Bottom plate 61 side wall 62 wife wall 63 handle forming part 64 mounting part 64a pin 7 tensile testing machine 70 test stand 71 pillow material

Claims (6)

Rail material embedded in the foundation block of a vending machine,
A shaft groove having a width at which the upper end is open and the bolt shaft portion is slidable, and a washer plate inserted into the bolt is connected to the lower end of the shaft portion groove so that the width is wider than the shaft groove. A washer groove having an upper end communicated with the washer groove, and a head groove having a width in which the bolt head or nut is slidable to prevent rotation of the bolt head or nut, and the upper outer surface of the washer groove A rail material made of plastic, characterized in that has a slope inclined downward toward the outside in the width direction. The rail material according to claim 1, wherein all or a part of the shaft groove, the washer groove, and the head groove are closed by end plates at both ends of the rail material. The rail material according to claim 2, wherein at least one of the end plates can be cut by a weakening line formed around the end plate. A box-shaped lower member having a concave groove portion that constitutes the head groove along the length direction in the center of the bottom plate portion;
At least one of a pair of opposed vertical plate portions, a horizontal plate portion projecting outward from the lower end of each vertical plate portion, a vertical plate portion formed downward from the outer end of each horizontal plate portion, and It consists of an upper member having a connecting part that connects the vertical plate parts and / or the horizontal plate parts and / or the vertical plate parts at the end,
The rail material according to claim 2 or 3, wherein the vertical plate portion of the upper member is formed by being fitted inside the lower member side plate portion. An installation base block for a vending machine or the like, wherein the rail material according to any one of claims 1 to 4 is embedded so that the shaft groove opens to the upper surface of the block. The base block according to claim 5, wherein the shaft groove, the washer groove, and the head groove are opened on an end surface of the block by cutting the end plate with the weakening line.

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