JP5390298B2 - Floor pan heating structure - Google Patents

Description

  The present invention relates to a floor pan heating structure.

  In a floor pan heating structure in which a planar heater is provided on the lower surface of the floor pan, it is known to provide grid-like ribs on the lower surface of the floor pan in plan view in order to increase the rigidity of the floor pan. The grid-like ribs are suspended downward from the lower surface of the floor pan, which obstructs the installation of the planar heater on the lower surface of the floor pan. Therefore, the present applicant forms a notch that extends to the base of the rib and arranges a planar heater, or makes a notch that does not reach the base concave in the rib and overcomes the notch of the rib. In this way, it has been proposed to provide a planar heater having a connecting portion that matches the shape of the rib (see, for example, Patent Documents 1 and 2).

JP 2006-348703 A JP 2009-052355 A

  However, since the notch is formed in the rib, the original effect of the rib provided to ensure the strength is reduced, and the rigidity reinforcing effect of the floor pan by the rib is not sufficiently exhibited.

  The present invention has been made in view of the circumstances as described above, and provides a floor pan heating structure capable of ensuring a good rigidity reinforcing effect of the floor pan by the ribs while suppressing the strength reduction of the notched ribs. The challenge is to do.

  The present invention is characterized by the following.

  1stly, the planar heater which has the floor pan by which the rib protruded below from the lower surface in the planar view grid | lattice form, and the connection part which connects the planar heating part adjacent to several planar heating part And a plurality of storage spaces for the sheet heating portion of the sheet heater partitioned by the ribs are formed on the lower surface side of the floor pan, the leading end of the ribs are notched to form a passage portion, Adjacent storage spaces are communicated with each other through the passage portion, and the sheet heating portion of the sheet heater is stored in the adjacent storage space via a rib and disposed on the lower surface of the floor pan. In the floor pan heating structure in which the connecting portion is disposed across the rib through the passage portion, the rib that protrudes substantially perpendicular to the rib on the side surface of the rib facing the storage space and continues to the lower surface of the floor pan A reinforcing member is provided.

  Second, in the first invention, the connecting portion of the planar heater is composed of a connecting portion of a lead wire that electrically connects the main wire portions of the heater wires of adjacent planar heating portions. The height of the rib in the passage portion is at least as low as the wire diameter of the lead wire, and the rib reinforcing members are provided on both sides of the passage portion so as to face each other from the base end portion to the tip end portion of the rib, and rib reinforcement The distance between the members is made smaller than the diameter of the lead wire so that the lead wire can be fitted and fixed, and the connecting wire portion of the lead wire is fitted and fixed between the rib reinforcing members and wired in the passage portion.

  3rdly, in the said 1st invention, the connection part of a heater wire is provided with the connection part of the heater wire which electrically connects the main line parts of the heater wire of the adjacent planar heating part. The rib reinforcing member is formed in a substantially triangular shape in a side view with an inclined surface that is inclined downward from the lower surface of the floor pan to the tip surface of the rib forming the passage portion.

  4thly, in the said 3rd invention, another rib reinforcement member is provided in the side surface of the rib which faces storage space, facing both sides of a channel | path part, and descends from the lower surface of a floor pan over the front end surface of a rib. It has an inclined surface and is formed in a substantially triangular shape in side view.

  According to the first aspect of the present invention, the rib reinforcing member is provided on the side surface of the rib facing the storage space so as to protrude substantially at right angles to the rib and to be continuous with the lower surface of the floor pan. The reduction is suppressed, and a good rigidity reinforcing effect of the floor pan by the rib can be ensured.

  According to the second invention, since the height of the rib in the passage portion is lowered at least by the wire diameter of the lead wire, the height of the notch of the rib is suppressed as much as possible, and the strength reduction of the rib is suppressed as much as possible. Is possible. In addition, rib reinforcing members are provided on both sides of the passage portion so as to face each other from the base end portion of the rib to the tip end portion, and the interval between the rib reinforcing members can be fixed by inserting and fixing the connecting portion of the lead wire. Since it is smaller than the diameter, the ribs are effectively reinforced, the ribs can be more reliably secured with a good rigidity reinforcing effect of the floor pan, and the wiring work of the connecting portion of the lead wire is easy. Become. Since it is easy to install the planar heater on the lower surface of the floor pan, the assemblability is improved.

  According to the third invention, the rib reinforcing member is formed in a substantially triangular shape in a side view with an inclined surface that is inclined downward from the lower surface of the floor pan to the tip surface of the rib that forms the passage portion. Is reinforced more effectively. Therefore, the strength reduction of the notched rib can be suppressed, and a good rigidity reinforcing effect of the floor pan by the rib can be ensured more reliably. Further, by reinforcing the rib with the rib reinforcing member, it is possible to reduce the height of the rib forming the passage portion (increase the height of the passage portion), and thereby the length of the planar connection portion. Can be shortened, power consumption can be reduced, and energy can be saved. Moreover, the ribs are not warmed more than necessary. Furthermore, when the height of the rib forming the passage portion is low, the planar connection portion is easily arranged and the workability is improved. Further, it is possible to arrange the planar connection portion in plane contact with the inclined surface of the rib reinforcing member, so that stable arrangement of the planar connection portion can be realized and the heat generated by the connection line portion of the heater wire in the planar connection portion. Has the advantage that it can be effectively transmitted to the upper surface of the floor pan (wash floor surface).

  According to the fourth invention, another rib reinforcing member is provided on the side surface of the rib facing the storage space so as to be opposed to both sides of the passage portion, and is inclined downward from the bottom surface of the floor pan to the tip surface of the rib. Since it has a surface and is formed in a substantially triangular shape in side view, the ribs are more effectively reinforced, and the rigidity reinforcement effect of the floor pan by the ribs is further increased.

It is the disassembled perspective view which looked at the principal part of the floor pan heating structure which is the 1st embodiment of the present invention from the lower part. It is the perspective view which looked at the floor pan heating structure of FIG. 1 from the downward direction. It is a front view of the principal part of the rib of the floor pan of FIG. It is a perspective view of the planar heater of FIG. It is the perspective view which looked at the principal part of the floor pan in the floor pan heating structure which is the 2nd embodiment of the present invention from the lower part. It is the disassembled perspective view which looked at the principal part of the floor pan heating structure which is the 2nd Embodiment of this invention from the downward direction. It is the perspective view which looked at the principal part of the floor pan in the floor pan heating structure which is the 3rd embodiment of the present invention from the lower part.

<First Embodiment>
FIG. 1 is an exploded perspective view of a main part of the floor pan heating structure according to the first embodiment of the present invention as viewed from below, and FIG. 2 is a perspective view of the floor pan heating structure of FIG. 1 as viewed from below. It is. 3 is a front view of the main part of the rib of the floor pan of FIG. 1, and FIG. 4 is a perspective view of the planar heater of FIG.

  As shown in FIG. 1, in the floor pan heating structure of the present embodiment, a planar heater 20 is disposed on the lower surface 4 side of the floor pan 1, and a soft cushion material 30 and a hard heat insulating material 40 are provided below the floor heater 20. As shown in FIG. 2, the bottom side of the floor pan 1 except for the drainage section 3 is covered with a hard heat insulating material 40.

  This floor pan 1 forms the floor of a bathroom washroom, the upper surface is configured as a washroom floor surface, and a plurality of ribs 2 project downward from the lower surface 4. The ribs 2 are provided in a lattice shape in plan view so as to intersect the entire lower surface of the floor pan 1 except for the drainage portion 3 in a plane view. The ribs 2 are provided with excellent rigidity reinforcement.

  As will be described later, the planar heater 20 has a plurality of planar heating portions 21 and connecting portions 22 that connect adjacent planar heating portions 21 to each other, and intersects the floor pan 1 vertically and horizontally. A rectangular space in plan view defined by the ribs 2 is formed on the lower surface 4 side as the storage space 5 of the sheet heating part 21 of the sheet heater 20, and each sheet heating part 21 of the sheet heater 20 is It is stored in the storage space 5 and disposed on the lower surface 4 of each section of the floor pan 1. Further, the rib 2 has a tip portion cut out in a concave shape to form a passage portion 6, and a storage space 5 adjacent to the rib 2 via the passage portion 6 is communicated with the passage portion 6. Twenty connecting portions 22 are disposed across the rib 2 through the passage portion 6. That is, the connection portion 22 of the planar heater 20 is disposed along both side surfaces 9 a and 9 b of the rib 2 facing the storage space 5 and the passage portion 6.

  As shown in FIG. 4, in the planar heater 20 of the present embodiment, a heater wire 24 that generates heat in an energized state is wired on a sheet material 23 formed of a metal soaking sheet. There is provided a temperature regulator 25 for controlling the amount of electricity supplied to the heater and controlling the amount of heat generated. As the sheet material 23, for example, an aluminum material having good thermal conductivity is used. A tubing heater is used as the heater wire 24 and is fixed to the sheet material 23 by thermal bonding. The temperature controller 25 is fixed to the sheet material 23 with an adhesive, a double-sided adhesive tape, or the like.

  In such a planar heater 20, a plurality of planar heat generating portions 21 are arranged in a straight line with a predetermined interval, and a connecting portion 22 is continuously provided between adjacent planar heat generating portions 21. It is formed in a band shape. The outer shape of each planar heat generating part 21 is substantially the same as the outer shape of the storage space 5 of each partition and is formed in a substantially rectangular shape in plan view. Each planar heat generating part 21 covers the entire lower surface 4 of each partition. It is arranged as follows. A floor pan 1 in which the main line portion 24a of the heater wire 24 is arranged in a meandering manner in the entire area of the sheet heating portion 21 so that the entire area of the sheet heating section 21 can generate heat, and the sheet heating section 21 is disposed. The entire lower surface 4 of each section can be heated substantially uniformly. The connecting portion 22 of the planar heater 20 is configured as a planar connecting portion 22 a to which the connecting wire portion 24 b of the heater wire 24 is wired. The connecting wire portion 24 b of the heater wire 24 is a pair of heater wires 24. The main line portions 24a of the heater wires 24 in the adjacent sheet heating portions 21 are configured to be electrically connected to each other so that the sheet connection portions 22a can generate heat. Further, since the planar connection portion 22a is disposed across the rib 2 through the passage portion 6, the planar connection portion 22a is formed to be substantially equal to the width of the passage portion 6 so as to be able to pass through the passage portion 6 and to be bent and deformed. The When the planar connection portion 22 a is disposed across the rib 2 through the passage portion 6, the rib 2 can be heated by the connection wire portion 24 b of the heater wire 24. Therefore, the planar heater 20 disposed on the lower surface 4 side of the floor pan 1 heats the lower surface 4 and the ribs 2 of each section of the floor pan 1 and heats the entire lower surface 4 of the floor pan 1 almost without interruption. The wash floor can be heated to a substantially uniform temperature.

  By the way, in order to fabricate a sheet heater 20 having a plurality of sheet connection portions 22a and having a sheet heat generating portion 21 connected in the longitudinal direction, the equipment for the production is enlarged and the manufacturing cost is increased. In addition, since the product becomes larger, the management cost and the like increase. Therefore, in order to more easily manufacture the planar heater 20 of the present embodiment, a part of the plurality of planar connection portions 22a as the connection portions 22 is configured as the connection wire portion 22b of the lead wire 26. The connecting wire portion 22 b of the lead wire 26 electrically connects the main wire portions 24 a of the heater wires 24 in the adjacent planar heat generating portions 21.

  In the present embodiment, in order to suppress a decrease in strength of the rib 2 due to the provision of the passage portion 6 by notching the tip portion of the rib 2 of the floor pan 1, the both side surfaces 9 a and 9 b of the rib 2 facing the storage space 5 are provided. Rib reinforcement members 10a and 10b that protrude substantially perpendicular to the rib 2 and are continuous with the lower surface 4 of the floor pan 1 are provided. The rib reinforcing member may be provided only on one side of the rib, but it should be provided on both sides of the rib in order to prevent the rib from lowering its strength and ensure a good rigidity reinforcing effect of the floor pan by the rib. Is desirable. In that case, the rigidity reinforcement effect of the floor pan is more effectively exhibited by arranging the rib reinforcing members symmetrically with the rib interposed therebetween.

  The rib reinforcing members 10a and 10b of this embodiment are provided on both side surfaces 9a and 9b of the rib 2, respectively, and the rib reinforcing members 10a and 10b of the side surfaces 9a and 9b of the rib 2 are plane symmetric with the rib 2 interposed therebetween. The rib reinforcing member 10a on one side surface 9a of the rib 2 has the same configuration as the rib reinforcing member 10b on the other side surface 9b. Therefore, the rib reinforcing member 10a disposed on the one side surface 9a of the rib 2 will be described below, and the description of the rib reinforcing member 10b disposed on the other side surface 9b will be omitted.

  In the present embodiment, a pair of rib reinforcing members 10a having a rectangular plate shape in a side view is opposed to both sides of the passage portion 6, that is, the left and right sides of the passage portion 6 so as to sandwich the passage portion 6 from the proximal end portion to the distal end portion of the rib 2. Is provided. The pair of rib reinforcing members 10a on the left and right sides are arranged substantially parallel to each other. A connecting wire portion 22b of a lead wire 26 that is a connecting portion 22 of the planar heater 20 is fitted and fixed between the rib reinforcing members 10a on both the left and right sides. Here, in order to enable the connecting wire portion 22b of the lead wire 26 to be fitted and fixed between the left and right rib reinforcing members 10a, in the present embodiment, the interval x between the left and right rib reinforcing members 10a is set to the line of the lead wire 26. The diameter is made smaller than the diameter. The lower limit value of the interval x is a value that allows the lead wire 26 to be fitted and fixed, and is not particularly limited. For example, it is considered that the distance x is equal to or larger than the wire diameter of the core material of the lead wire 26. Further, the width of the passage portion 6 is the same as the interval x between the rib reinforcing members 10a so that the connecting wire portion 22b of the lead wire 26 can pass therethrough.

  Further, in the present embodiment, the height of the rib 2 in the passage portion 6 is lowered by at least the wire diameter of the lead wire 26. That is, the height y of the passage portion 6 of the rib 2 is set to be equivalent to the wire diameter of the lead wire 26 or the height y is set to be larger than the wire diameter of the lead wire 26. In order to suppress the strength reduction of the rib 2 as much as possible, it is preferable to set the height y of the passage portion 6 to be equivalent to the wire diameter of the lead wire 26. By setting the height y of the passage portion 6 to be equivalent to the wire diameter of the lead wire 26 or larger than the wire diameter of the lead wire 26, the connecting wire portion 22 b of the lead wire 26 is wired to the passage portion 6. The lead wire 26 does not protrude from the front end surface 2a of the rib 2. For example, when the floor pan 1 is placed on the ground or the like during construction, it is avoided that the connecting wire portion 22b of the lead wire 26 contacts the ground or the like. In addition, it is possible to prevent the connection line portion 22b of the lead wire 26 from being damaged due to grounding.

  As described above, in the present embodiment, the rib reinforcing members 10a are provided on both sides of the passage portion 6 so as to face each other from the proximal end portion to the distal end portion of the rib 2, and the interval between the rib reinforcing members 10a is determined by the lead wires 26. Since it is made smaller than the wire diameter of the lead wire 26 so that it can be fitted and fixed, the rib 2 is effectively reinforced, and the good rigidity reinforcing effect of the floor pan 1 by the rib 2 can be more reliably ensured, Wiring work of the connecting wire portion 22b of the lead wire 26 is facilitated. Since it is easy to install the planar heater 20 on the lower surface 4 of the floor pan 1, the assemblability is improved. Further, since the height of the rib 2 in the passage portion 6 is lowered by at least the wire diameter of the lead wire 26, the notch height of the rib 2 (height of the passage portion) is suppressed as much as possible. It is possible to suppress the strength reduction as much as possible.

  In the present embodiment, the soft cushion material 30 and the hard heat insulating material 40 are sequentially disposed below the planar heater 20 as described above.

  The soft cushion material 30 is installed to protect the sheet heating portion 21 of the sheet heater 20 disposed in the storage space 5 of the floor pan 1 and is not installed below the rib 2 of the floor pan 1. The soft cushion material 30 is plate-shaped, and its outer shape is a shape corresponding to the outer shape of the storage space 5 of the floor pan 1 and is formed in a rectangular shape in plan view.

  As for the hard heat insulating material 40, the thick part 41 and the thin part 42 are alternately formed in the length direction. The thin portion 42 is disposed below the rib 2 of the floor pan 1, and the thick portion 41 is disposed in the storage space 5. The outer shape of the thick portion 41 is a shape corresponding to the outer shape of the storage space 5 of the floor pan 1 and is formed in a rectangular shape in cross section. A through hole 43 is provided in the central portion of the hard heat insulating material 40. The through-hole 43, together with the through-holes 28, 31 provided in the central portion of the sheet heating portion 21 of the sheet heater 20 and the soft cushion material 30, is mounted so as to project downward from the lower surface 4 of the floor pan 1. The boss 7 is inserted. A mounting hole 7 a is formed in the mounting boss 7, and a mounting screw 46 is screwed into the mounting hole 7 a from below the hard heat insulating material 40 through a pressing metal 44 and a washer 45. Then, the thick metal part 41 of the hard heat insulating material 40 is supported by the presser fitting 44, and the planar heater 20, the soft cushion material 30 and the hard heat insulating material 40 are fixed to the lower surface 4 of the floor pan 1.

When the planar heater 20 is installed on the lower surface 4 of the floor pan 1 in this way, since the lower portion of the planar heater 20 is covered with the hard heat insulating material 40, the heat generated by the planar heater 20 is reduced to the floor. Heat can be efficiently transferred to the pan 1 side, and the heating efficiency of the planar heater 20 is improved. In particular, below the planar heat generating portion 21 disposed on the lower surface 4 of the floor pan 1 that is mainly heated, the soft cushion material 30 and the hard heat insulating material 40 are laminated to improve the heat insulating property. Therefore, the heating efficiency of the floor pan 1 by the planar heater 20 is effectively improved.
<Second Embodiment>
FIG. 5 is a perspective view of a main part of the floor pan in the floor pan heating structure according to the second embodiment of the present invention as viewed from below, and FIG. 6 is a floor pan according to the second embodiment of the present invention. It is the disassembled perspective view which looked at the principal part of the heating structure from the lower part. In addition, the same code | symbol is attached | subjected about the part same as the part shown to FIGS. 1-4, and description is abbreviate | omitted.

  Also in the present embodiment, both side surfaces 9a and 9b of the rib 2 facing the storage space 5 are used in order to suppress a reduction in strength of the rib 2 due to the cutout of the tip of the rib 2 of the floor pan 1 and the provision of the passage portion 6. Further, rib reinforcing members 11 a and 11 b that protrude substantially perpendicular to the rib 2 and continue to the lower surface 4 of the floor pan 1 are provided. The rib reinforcing members 11a and 11b may be provided only on one side surface 9a of the rib 2, but as described in the first embodiment, in order to ensure a good rigidity reinforcing effect of the floor pan 1. It is desirable to be provided on both side surfaces 9a and 9b of the rib 2, and more preferably, rib reinforcing members 11a and 11b are provided on both side surfaces 9a and 9b of the rib 2 so as to be plane symmetrical with respect to the rib 2. It is. The rib reinforcing members 11a and 11b of this embodiment are provided on both side surfaces 9a and 9b of the rib 2 symmetrically with respect to the rib 2, and the rib reinforcing member 11a on one side surface 9a of the rib 2 has the other configuration. The rib reinforcing member 11b on the side surface 9b has the same configuration. For this reason, the rib reinforcement member 11a arrange | positioned at the one side surface 9a of the rib 2 below is demonstrated, and description is abbreviate | omitted about the rib reinforcement member 11b arrange | positioned at the other side surface 9b.

  The rib reinforcing member 11a of the present embodiment includes ribs 2 that form the passage portion 6 from the lower surface 4 of the floor pan 1 at three positions of the right and left both ends and the central portion in the upper portion of the rib 2 of the passage portion 6. It is provided over the front end surface 2b, has a downwardly inclined surface 13, and is formed in a substantially triangular shape with the front end side of the rib 2 in the passage portion 6 as a top portion in a side view. The three rib reinforcing members 11a are provided substantially in parallel in the vertical direction. The slopes of the inclined surfaces 13 of the rib reinforcing members 11a are made equal, and the planar connection portions 22a, which are the connection portions 22 of the planar heater 20, can be arranged on the inclined surfaces 13 by surface contact.

  If the rib reinforcing member 11a is formed on the upper portion of the rib 2 of the passage portion 6 and can balance the reinforcement of the rib 2 and the planar connection portions 22a are arranged in a well-balanced manner, the number of the rib reinforcing members 11a is not limited. The arrangement position, width, etc. are not particularly limited. For example, it may be two places on the left and right ends of the upper portion of the rib 2 of the passage portion 6 or one place only in the center portion, and the rib reinforcing member 11a is formed in all the width direction of the upper portion of the passage portion 6. May be.

  As described above, in the present embodiment, the rib reinforcing member 11a has the inclined surface 13 that is inclined downward from the lower surface 4 of the floor pan 1 to the tip surface 2b of the rib 2 that forms the passage portion 6, and has a substantially triangular shape in side view. Therefore, the rib 2 is reinforced more effectively. Therefore, the strength reduction of the notched rib 2 can be suppressed, and a good rigidity reinforcing effect of the floor pan 1 by the rib 2 can be ensured more reliably. Further, by reinforcing the rib 2 with the rib reinforcing member 11a, it becomes possible to make the height of the rib 2 forming the passage portion 6 as low as possible (in other words, increase the height of the passage portion 6), The length of the connecting portion 22 of the planar heater 20 that passes through the passage portion 6, for example, the length of the planar connecting portion 22a, can be shortened, thereby reducing power consumption and saving energy. Moreover, the rib 2 is not warmed more than necessary. Furthermore, when the height of the rib 2 forming the passage portion 6 is low, the planar connection portion 22a is easily arranged and the workability is improved. Further, since the planar connection portion 22a can be arranged on the inclined surface 13 of the rib reinforcing member 11a by surface contact, a stable arrangement of the planar connection portion 22a can be realized and the heater wire in the planar connection portion 22a can be realized. There is also an advantage that heat from the 24 connecting line portions 24b can be effectively transferred to the upper surface of the floor pan 1 (washing floor surface).

  In the present embodiment, as shown in FIG. 6, the planar connection portion 22 a of the planar heater 20 is disposed across the rib 2 through the passage portion 6. For this reason, as described in the first embodiment, the planar connection portion 22a is formed to be able to pass through the passage portion 6 so as to be substantially equal to the width of the passage portion 6 and bendable. Thus, since the planar connection portion 22a of the planar heater 20 is disposed across the rib 2 through the passage portion 6, the planar connection portion 22a protrudes from the rib 2 tip end surface 2a on both sides of the passage portion 6. For example, when the floor pan 1 is placed on the ground or the like during construction, the planar connection portion 22a is prevented from contacting the ground or the like, and damage to the planar connection portion 22a due to grounding can be prevented. it can.

  Further, when the planar connection portion 22a of the planar heater 20 is disposed in surface contact with the inclined surface 13 of the rib reinforcing member 11a, the passage portion is formed by the connection line portion 24b of the heater wire 24 in the planar connection portion 22a. 6 and the inclined surface 13 of the rib reinforcing member 11a can be heated. In this case, the planar heater 20 disposed on the lower surface 4 side of the floor pan 1 heats the lower surface 4 of each section of the floor pan 1, the rib reinforcing member 11 a, and the rib 2. The whole can be heated almost without interruption, and the washing floor can be heated to a substantially uniform temperature.

  In the present embodiment, a positioning projection 8 is provided so as to project upward at the center in the width direction of the front end surface 2 b of the rib 2 forming the passage portion 6. Further, a positioning through-hole 27 to be fitted to the positioning protrusion 8 is formed in the planar connection portion 22 a of the planar heater 20. When the planar heater 20 is disposed on the lower surface 4 side of the floor pan 1, the through hole 27 of the planar connection portion 22 a of the planar heater 20 is fitted into the positioning protrusion 8 of the rib 2 with good visibility. Thus, the planar heater 20 can be disposed on the lower surface 4 side of the floor pan 1 simply and accurately, and good manufacturability is ensured.

  In the present embodiment, after the planar heater 20 is disposed on the lower surface 4 side of the floor pan 1, the protective cover 50 is attached and fixed to protect the planar connection portion 22 a of the planar heater 20.

  The protective cover 50 includes a bottom wall portion 51 having a fixing projection 53 projecting upward at a central portion thereof, and a pair of side wall portions 52 erected substantially vertically from both side ends of the bottom wall portion 51. A rib-reinforcing member 11a, which is a hard member having a U-shaped cross-section that opens upward, and is disposed on the upper portion of the rib 2 that forms the passage portion 6 in which the planar connection portion 22a of the planar heater 20 is disposed. The planar connection portion 22a of the planar heater 20 is protected by being attached so as to straddle. The protective cover 50 is fixed by disposing the rib reinforcing member 11a in which the planar connection portion 22a of the planar heater 20 is disposed between the opposing side wall portions 52 of the protective cover 50, to the positioning protrusion 8 of the rib 2. This is done by fitting and fixing the fixing projection 53 of the protective cover 50 into the mounting hole 8a formed.

After fixing the protective cover 50, the soft cushion material 30 and the hard heat insulating material 40 are sequentially disposed in the same manner as in the first embodiment.
<Third Embodiment>
FIG. 7: is the perspective view which looked at the principal part of the floor pan in the floor pan heating structure which is the 3rd Embodiment of this invention from the downward direction. In addition, the same code | symbol is attached | subjected about the part same as the part shown to FIGS. 1-6, and description is abbreviate | omitted.

  In this embodiment, in addition to the rib reinforcing members 11 a and 11 b shown in FIG. 5 described in the second embodiment, further rib reinforcing members 12 a and 12 b are provided on both side surfaces 9 a and 9 a of the rib 2 facing the storage space 5. One pair is provided on each side of the passage portion 6 so as to face each other. A pair of rib reinforcing members 12a provided on one side surface 9a of the rib 2 is provided on the bottom surface of the floor pan 1 at a location close to the passage portion 6 so as to sandwich the passage portion 6 so as to enhance the reinforcing effect of the rib 2. 4 is provided over the distal end surface 2a of the rib 2, has a downwardly inclined surface 14, and is formed in a substantially triangular shape with the distal end side of the rib 2 as a top in a side view. The pair of rib reinforcing members 12a are provided substantially parallel to each other in the vertical direction. Similarly to the pair of rib reinforcing members 12a, the pair of rib reinforcing members 12b provided on the other side surface 9b of the rib 2 are also located near the passage portion 6 so as to sandwich the passage portion 6, Provided from the lower surface 4 to the distal end surface 2a of the rib 2, has a downwardly inclined surface 14, and is formed in a substantially triangular shape with the distal end side of the rib 2 as a top when viewed from the side, and substantially in the vertical direction. It is provided in parallel. The rib reinforcing member may be provided only on one side surface of the rib. However, as described in the first embodiment, both side surfaces of the rib may be used to ensure a good rigidity reinforcing effect of the floor pan. It is desirable to be provided on both side surfaces of the rib symmetrically with respect to the rib.

  In this embodiment, since the said rib reinforcement member is further provided, a rib is reinforced more effectively and the rigidity reinforcement effect of the floor pan by a rib increases more.

DESCRIPTION OF SYMBOLS 1 Floor pan 2 Rib 4 Lower surface 5 Storage space 6 Passage part 9a, 9b Side surface 10a, 10b, 11a, 11b, 12a, 12b Rib reinforcement member 13,14 Inclined surface 20 Planar heater 21 Planar heat generating part 22 Connection part 22a Surface Connection portion 22b connection wire portion 24 heater wire 24a main wire portion 24b connection wire portion 26 lead wire

Claims (4)

  A rib comprising a floor pan having ribs projecting downward from the lower surface in a lattice shape in plan view, and a planar heater having a plurality of planar heat generating portions and a connecting portion connecting adjacent planar heat generating portions. A plurality of storage spaces for the planar heat generating portion of the planar heater partitioned by a plurality of spaces are formed on the lower surface side of the floor pan, the leading ends of the ribs are notched to form passage portions, and adjacent storage spaces are formed via the ribs. The sheet heater is communicated with the passage section, and the sheet heater of the sheet heater is housed in an adjacent storage space via a rib and disposed on the lower surface of the floor pan, and the connection section of the sheet heater is disposed in the passage section. In the floor pan heating structure arranged across the ribs through the ribs, rib reinforcing members are provided on the side surfaces of the ribs facing the storage space so as to project substantially at right angles to the ribs and continue to the lower surface of the floor pan. Floor pan heating structure characterized by having.   The connecting portion of the planar heater is composed of a lead wire connecting wire portion that electrically connects the main wire portions of the heater wires of the adjacent planar heating portions, and the rib height in the passage portion is at least the lead wire. The rib reinforcing members are provided on both sides of the passage portion so as to face each other from the proximal end portion to the distal end portion, and the interval between the rib reinforcing members can be fixed by inserting lead wires. 2. The floor pan according to claim 1, wherein the floor pan is smaller than the wire diameter of the lead wire, and the connecting wire portion of the lead wire is fitted and fixed between the rib reinforcing members and wired in the passage portion. Heating structure.   The connecting portion of the planar heater is composed of a planar connecting portion provided with connecting portions of heater wires that electrically connect the main wire portions of heater wires of adjacent planar heating portions, and rib reinforcement 2. The floor pan according to claim 1, wherein the member has an inclined surface that is inclined downward from a lower surface of the floor pan to a tip end surface of a rib forming the passage portion, and is formed in a substantially triangular shape in a side view. Heating structure.   Further, another rib reinforcing member is provided on the side surface of the rib facing the storage space so as to be opposed to both sides of the passage portion, and has an inclined surface that is inclined downward from the lower surface of the floor pan to the tip surface of the rib, and is omitted in side view. The floor pan heating structure according to claim 3, wherein the floor pan heating structure is formed in a triangular shape.

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