JP4648741B2 - Cord bush, method of forming the cord bush, electric cord provided with the cord bush, and heating toilet seat provided with the electric cord - Google Patents

Description

  The present invention relates to a cord bush, a method for forming the cord bush, an electric cord provided with the cord bush, and a heating toilet seat provided with the electric cord.

  Conventionally, a cord bush has been used to protect a portion where an external load of an electric cord is likely to be applied, thereby preventing the internal copper wire from being damaged or bent due to bending or the like. For example, a cord bush is attached to a through hole formed in an outer member of an electrical product, and the electrical cord is drawn into the product via the cord bush and connected to a connector line or a power source (see Patent Document 1). ).

  A so-called cabtyre cord is known as an electrical cord. FIG. 9 shows the structure of such a captyre cord and a general cord bush formed on the captyre cord.

  As shown in FIG. 9, a cabtyre cord 104 is formed by coating a plurality of coated electric wires 100, which are obtained by coating a copper wire 101 with a thin insulator 102, with a sheath material 103 made of a vinyl chloride material, flame resistant polyethylene, or the like. The cord bush 200 is formed by a bush material 201 integrally formed with the sheath material 103. Reference numeral 202 denotes a stress distribution groove.

  In order to integrally form the cord bush on the sheath material 103, the cord bush is generally formed by injection molding using a molding die. The cap tire cord 104 is disposed in the molding die, and the bush material 201 is disposed in the die. Is solidified and then demolded. Note that the bush material 201 and the sheath material 103 may be made of the same material, or different materials may be appropriately selected and used.

  By using the mold as described above, if the mold is bent, a substantially L-shaped code bush can be easily formed.

  An electric cord provided with such a substantially L-shaped cord bush is applied to, for example, a heated toilet seat equipped in a recent flush toilet (see, for example, Patent Document 2).

  That is, in the heating toilet seat, a heater wire is disposed on the back surface of the toilet seat body attached to the functional part casing placed on the toilet body, and a wiring cord, that is, an electric cord (capty cord) is connected to the heater wire. The body is stored in advance for a predetermined length and can be pulled out and pulled as much as the storage, and a substantially L-shaped cord bush is formed on the electric cord, and this cord bush is formed on the side wall of the functional unit casing. It is attached in a penetrating state, and the wiring cord is drawn into the functional part casing via the cord bush.

  In particular, the heating toilet seat disclosed in Patent Document 2 is detachably and detachably attached to a support shaft protruding from a bearing housing that forms a part of the functional casing, and the wiring cord is not visible from the outside. Therefore, the cord bush is attached in the vicinity of the support shaft. With this configuration, the toilet seat can be easily removed while the wiring cord connected to the heater wire is attached.

FIG. 10 shows a cord bush 200 ′ formed in a substantially L shape used for the heating toilet seat described in Patent Document 2. In addition, the same code | symbol is attached | subjected to the same component as FIG. 9, and description is abbreviate | omitted. Reference numeral 300 denotes an outer wall of the functional part casing.
JP 2000-57858 A JP 2003-111693 A

However, since the conventional cord bush has a structure in which a bush material having a predetermined thickness is integrally formed with a sheath material of a wiring cord (capty cord), the size of the cord bush increases as the diameter of the wiring cord increases. End up. In particular, as shown in FIG. 10, when it is formed in a substantially L shape, the larger the diameter of the wiring cord, the larger the radius of curvature, and the larger the size is inevitable.
On the other hand, the heating toilet seat in which such a substantially L-shaped cord bush is used can be considered to have functions other than the heating function. Of course, the diameter of the wiring cord is expected to increase.

  In addition, since the heating toilet seat is not long enough for the wiring cord stored in the toilet seat, the amount of cord pull-out is limited even if the toilet seat is removed from the support shaft, and the range of movement is naturally narrow and convenient to use. It was not good. Thus, it is conceivable to increase the amount of wiring cords stored in the toilet seat and lengthen the amount of cords to be pulled out. However, even in that case, it is necessary to increase the diameter of the wiring cords for security reasons.

  Moreover, as described above, since the cord bush used for the heating toilet seat is attached in the vicinity of the support shaft that is extremely narrow in terms of area, it is not preferable to increase the size of the cord bush. As a matter of course, the method of thinning the bush material cannot be used because it may impair the function of the cord bush.

  Thus, it is desired to develop a cord bush that can maintain a compact shape even when the diameter of a cap tire cord or the like is increased and that does not impair the function.

  An object of the present invention is to provide a cord bush, a method for forming the cord bush, an electric cord provided with the cord bush, and a heating toilet seat provided with the electric cord that can solve the above-described problems.

  In this invention of Claim 1, it is the cord bush formed in the electric cord which further coat | covered the sheathed electric wire with the sheath material, Comprising: The electric wire holding material holding the covered electric wire exposure part which peeled the said sheath material, and this electric wire It consists of a bush material covering the outside of the holding material, and is formed by biting the bush material into an opening formed in the wire holding material.

  According to a second aspect of the present invention, in the cord bush according to the first aspect, a plurality of streaks are formed in the sheath material of the electric cord left inside the bush material.

  According to a third aspect of the present invention, in the cord bush according to the first or second aspect, the bush material and the wire holding material are formed of the same material.

  According to the fourth aspect of the present invention, there is provided a method of forming a cord bush formed on an electric cord obtained by further covering a covered electric wire with a sheath material, and peeling the sheath material to form a covered electric wire exposed portion. The exposed portion is wrapped with an electric wire holding material having an opening formed on the peripheral surface, and the electric wire holding material and a part of the sheath material are set in a molding die, and then the bush forming material is used as the molding die. It was decided to be injected into the mold and then demolded.

  According to a fifth aspect of the present invention, in the method for forming a cord bush according to the fourth aspect, a braided portion is formed in the sheath material in the vicinity of the exposed portion of the covered electric wire, and the molding die is formed in at least one of the braided portions. The electric cord is held in the mold by fitting the fitting piece provided on the mold.

  According to a sixth aspect of the present invention, in the cord bush forming method according to the fourth or fifth aspect, the wire holding material is formed of the same material as the bush forming material.

  In this invention of Claim 7, it is an electric cord provided with the code | cord | chord main body which further coat | covered the covered electric wire with the sheath material, and the cord bush formed in this cord main body, Comprising: The said cord bush is the coating | coated which peeled off the said sheath material. The wire holding material holding the wire exposed portion and a bush material covering the outside of the wire holding material were formed by biting the bush material into an opening formed in the wire holding material.

  According to an eighth aspect of the present invention, in the electric cord according to the seventh aspect, the cord bush has a bent shape.

  According to the present invention of claim 9, in a heating toilet seat comprising a heater wire disposed on the back surface of the toilet seat body and an electric cord further covered with a sheath material with a covered electric wire connected to the heater wire, the electric cord includes a cord bush The cord bush is composed of an electric wire holding material that covers the exposed portion of the covered electric wire from which the sheath material has been peeled off, and a bushing material that covers the outer side of the electric wire holding material. The bush material was inserted into the formed opening.

  According to a tenth aspect of the present invention, in the heating toilet seat according to the ninth aspect, the toilet seat body is attached to a functional part casing placed on the toilet body, and the cord bush is bent to penetrate the side wall of the functional part casing. The electric cord is extended into the functional part casing via the cord bush.

  (1) In the present invention described in claim 1, a cord bush formed on an electric cord obtained by further covering a covered electric wire with a sheath material, the electric wire holding material holding the covered electric wire exposed portion from which the sheath material is peeled off The outer periphery of the wire holding material is covered with a bushing material, and the bushing material is formed in the opening formed in the electric wire holding material. In addition, it is reinforced by providing an electric wire holding material, and further, since the bushing material goes around into the opening and firmly engages, the coupling force between the electric wire holding material and the bushing material is improved, and the cord bushing Even if it is small, sufficient strength can be maintained. In addition, since the cord bush is reduced in size, restrictions on the cord bushing mounting position are reduced in the outer portion of the electrical product.

  (2) In the present invention according to claim 2, in the cord bush according to claim 1, since the plurality of streaks are formed in the sheath material of the electric cord remaining inside the bush material, In addition to the above effect, the coupling force between the cord portion covered with the sheath material extending from the cord bush and the bush material is improved, and the electric cord and the cord bush are firmly integrated.

  (3) In the present invention of claim 3, in the cord bush according to claim 1 or 2, since the bush material and the wire holding material are formed of the same material, the two are integrated at the time of molding, and the strength is further increased. improves.

  (4) The present invention of claim 4 is a method of forming a cord bush formed on an electric cord in which a covered electric wire is further covered with a sheath material, and peeling the sheath material to form a covered electric wire exposed portion, The covered electric wire exposed portion is wrapped with an electric wire holding material having an opening on the peripheral surface, and the electric wire holding material and a part of the sheath material are set in a mold, and then a bush forming material is used. Since it was injected into the mold, and then obtained by demolding, the covered wire exposed part from which the sheath material was peeled was easily deformed, for example, a cord bush bent substantially at right angles could be easily formed, In addition, it is reinforced by providing the wire holding material, and further, since the bushing material goes into the opening and securely bites in, the coupling force between the wire holding material and the bushing material is improved, and even a small diameter is sufficient Strength It is possible to form the code bushing having.

  (5) According to the present invention of claim 5, in the cord bush forming method according to claim 4, a braided portion is formed in the vicinity of the covered wire exposed portion of the sheath material, and at least one of these braided portions. Since the fitting piece provided in the mold is fitted and the electric cord is held in the mold, in addition to the effect of (4) above, the electric cord is injected when the bushing material is injected into the mold. There is no risk of shifting, and the occurrence of molding defects and the like can be prevented. In addition, the bush material wraps around the other sculpted portions, and the coupling force between the cord bush and the cord portion increases.

  (6) According to the sixth aspect of the present invention, in the cord bushing forming method according to the fourth or fifth aspect, since the wire holding material is formed of the same material as the bush forming material, the two are integrated during molding. The strength is improved.

  (7) The present invention of claim 7 is an electric cord comprising a cord body in which a covered electric wire is further covered with a sheath material, and a cord bush formed on the cord body, wherein the cord bush includes the sheath material. Because it consists of a wire holding material holding the peeled covered electric wire exposed part and a bushing material covering the outside of the electric wire holding material, and the bushing material is inserted into the opening formed in the wire holding material. In addition, the cord bush has a sufficient strength while being small, and the versatility as an electric cord is enhanced.

  (8) According to the eighth aspect of the present invention, in the electric cord according to the seventh aspect, since the cord bush has a bent shape, the effect of the above (7) can be further enhanced and versatility can be further improved.

  (9) In the present invention of claim 9, in the heating toilet seat comprising: a heater wire disposed on the back surface of the toilet seat body; and an electric cord obtained by further covering a covered electric wire connected to the heater wire with a sheath material. The cord bush is formed of an electric wire holding material that covers the exposed portion of the covered electric wire from which the sheath material has been peeled off, and a bushing material that covers the outer side of the electric wire holding material. Since the bush material is inserted into the opening formed in the holding material, for example, even if the diameter of the electric cord for the heating toilet seat is increased, the cord bush can be reduced in size while maintaining sufficient strength. In addition, since the restriction of the cord bush mounting position is reduced in the outer portion of the toilet bowl on which the heating toilet seat is placed, the degree of freedom in designing the toilet seat and the toilet bowl is increased.

  (10) According to the present invention of claim 10, in the heating toilet seat according to claim 9, the toilet seat body is attached to a functional part casing placed on the toilet body, and the cord bush is bent to form the functional part casing. Since the electric cord is attached in a penetrating manner to the side wall and the electric cord is extended into the functional portion casing through the cord bush, the cord bush is attached to an appropriate position that is not conspicuous from the outside on the side wall of the functional portion casing. It becomes possible to install a heating toilet seat so that wiring parts such as bushes cannot be seen from the outside.

  The present invention provides a cord bush formed on an electric cord obtained by further covering a covered electric wire with a sheath material, the electric wire holding material holding the covered electric wire exposed portion from which the sheath material has been peeled, and the outside of the electric wire holding material. The bush material is covered and formed by biting the bush material into an opening formed in the wire holding material.

  In other words, even if the diameter of the electric cord is increased, it is possible to prevent the diameter of the cord bush formed on the electric cord from increasing, as much as possible. Is provided, and the exposed portion is covered with an electric wire holding member to ensure strength while reducing the diameter. Moreover, since the bushing material wraps around the opening of the electric wire holding material and is firmly bitten, the coupling force between the electric wire holding material and the bushing material is further improved, and the cord bushing is sufficiently small High strength can be maintained.

  Moreover, in the cord bush described above, it is desirable to form a plurality of streaks on the sheath material of the electric cord that remains inside the bush material.

  By adopting such a configuration, the bushing material wraps around the cord portion covered with the sheath material extending from the cord bushing to improve the coupling force between them, and the electric cord and the cord bushing can be more firmly integrated. .

  Furthermore, in the above-described cord bush, the bush material and the wire holding material can be formed of the same material, and by using the same material, both can be integrated at the time of molding, and the strength can be further improved. .

  By the way, the cord bush which concerns on this embodiment mentioned above can be easily obtained with the following formation methods by injection molding.

  That is, a method for forming a cord bush formed on an electric cord in which a covered electric wire is further covered with a sheath material, wherein the sheath material is peeled to form a covered electric wire exposed portion. And holding the wire holding material and a part of the sheath material in the mold, and then injecting the bush forming material into the mold, It is intended to be obtained by demolding.

  With such a forming method, the bonding force between the wire holding material and the bushing material is further improved, and a cord bushing having sufficient strength can be easily formed even if it is small.

  The wire holding material may be a pair of halved members that are pre-molded so as to have a predetermined shape with an opening formed on the peripheral surface, and the covered wire exposed portion from which the sheath material has been peeled is deformed. Because it is easy, the covered wire exposed part is arranged along the shape of one half of the wire holding material and the other wire holding material is combined, so that the covered wire exposed part can be easily held and held. It is also easy to set in the mold as it is.

  Therefore, if the forming die and the wire holding member are formed in a substantially right-angle shape, a cord bush bent at a substantially right angle can be easily formed. Moreover, the cord bushing is reinforced by the wire holding material, and the bushing material wraps around the opening of the wire holding material and securely bites, so that the coupling force between the wire holding material and the bushing material is improved, Even if it is small, a cord bush having sufficient strength can be obtained.

  Further, in the above-described method for forming the cord bush, a plurality of streaks are formed in the sheath material in the vicinity of the exposed portion of the covered electric wire, and at least one of the streaks has a fitting piece provided in the mold. It is good to make it fit and hold | maintain an electric cord in the said shaping | molding die.

  There is no risk that the electrical cord will shift when the bushing material is injected into the mold, and it is possible to prevent the occurrence of molding defects, etc. The bond strength of increases.

  Furthermore, in the cord bush forming method described above, the wire holding material may be formed of the same material as the bush forming material, and the wire holding material and the bush forming material are integrated at the time of injection molding, so that the strength of the cord bushing is increased. More improved.

  Moreover, if it is set as the electric cord provided with the cord bush mentioned above, versatility will improve. That is, an electric cord comprising a cord main body in which a covered electric wire is further covered with a sheath material, and a cord bush formed on the cord main body, the cord bush holding the covered electric wire exposed portion from which the sheath material is peeled off The electric wire holding material and a bushing material covering the outside of the electric wire holding material, and the bushing material is inserted into an opening formed in the electric wire holding material.

  Such an electric cord will be equipped with a cord bushing that is small in size but has sufficient strength, and is also used when the area where the cord bushing is attached (such as the outer part of an electrical product) is limited. In this case, for example, when the diameter of the electric cord has to be increased due to a security problem, it can be used more suitably.

  Furthermore, in such an electric cord, the versatility can be further improved by forming the cord bush into a bent shape.

  For example, it is suitable for a heating toilet seat provided with a heater wire disposed on the back surface of the toilet seat body and an electric cord in which a covered electric wire connected to the heater wire is further covered with a sheath material.

  That is, in such a heated toilet seat, a cord bush is formed on the electric cord, and the cord bush covers an electric wire holding material that holds the covered electric wire exposed portion from which the sheath material is peeled, and an outer side of the electric wire holding material. It consists of a bush material, and is formed by biting the bush material into an opening formed in the wire holding material.

  With such a heating toilet seat, even if the diameter of the electric cord increases, the cord bush can be reduced in size while maintaining sufficient strength, and the cord bush is attached to the outer portion of the toilet bowl on which the heating toilet seat is placed. Since position restrictions are reduced, the degree of freedom in designing toilet seats and toilets is increased.

  Further, in the above-described heating toilet seat, the toilet seat body is attached to the functional part casing placed on the toilet body, and the cord bush is bent and attached to the side wall of the functional part casing so as to pass through the cord bush. The electric cord can be extended into the functional part casing.

  With this configuration, the cord bushing is attached to an appropriate position that is not conspicuous from the outside on the side wall of the functional unit casing, and the electric cord is housed in the toilet seat body so that it can be drawn out freely. It is possible to install a heated toilet seat so that it is not visible.

  Hereinafter, embodiments of the present invention will be described more specifically based on the drawings.

  FIG. 1 is an explanatory view of a flush toilet equipped with a heating toilet seat according to the present embodiment, FIG. 2 is an explanatory view showing the back surface of the heating toilet seat and a state where the heated toilet seat is removed, and FIG. 3 is a cord according to the present embodiment. Explanatory drawing by the cross-sectional view of a bush, FIG.4 and FIG.5 is explanatory drawing of the electric wire holding material with which the said cord bush is provided.

  As shown in FIG. 1, the flush toilet 1 in this embodiment arrange | positions the heating toilet seat 11 and the toilet lid 12 on the bowl part 10a formed in the toilet bowl body 10 so that opening and closing is possible.

  The heating toilet seat 11 and the toilet lid 12 are formed on left and right side walls 13c and 13c of a bearing housing 13b formed by projecting on a front wall portion 13a of a functional portion casing 13 disposed behind the upper opening surface of the bowl portion 10a. It is engaged and supported by the protruding support shaft 14a so as to be rotatable up and down. Reference numeral 14b denotes an engagement piece provided at the distal end of the engagement support shaft 14a, and reference numeral 14c denotes an engagement part which is provided at a proximal end portion of the heating toilet seat 11 and engages with the engagement piece 14b.

  As shown in FIG. 2, the toilet lid 12 is pivotally attached to the outside of the engaging portion 14 c of the heating toilet seat 11, and rotates up and down independently of the heating toilet seat 11. Can be opened together to open the bowl portion 10a. In FIG. 2, reference numeral 12 a denotes a pivoting portion formed at the proximal end portion of the toilet lid 12 and pivotally attached to the outer end surface of the engaging portion 14 c of the heated toilet seat 11. In FIG. 2, the right engagement support shaft 14 a is formed longer than the left engagement support shaft 14 a and reaches the pivotal attachment portion 12 a of the toilet lid 12.

  As shown in FIG. 2, the heating toilet seat 11 includes a heater wire 2 disposed in a wave shape over substantially the entire back surface of the toilet seat body 11a, and the heater wire 2 has one end of a cap tire cord 3 serving as an electric cord. It is connected to supply power. In the present embodiment, a cord guide 8 to be described later is attached in the heating toilet seat 11, and the cap tire cord 3 is inserted from the vicinity of the engaging portion 14c provided at the base end portion of the heating toilet seat 11 so as to pass through the cord guide 8. Is retracted into the toilet seat body 11a by a necessary length and extended, and one end is connected to the heater wire 2.

  By providing the cord guide 8, the cabtyre cord 3 can be retracted and accommodated in the toilet seat body 11a relatively long. Therefore, when the heating toilet seat 11 is removed as shown in FIG. Since the cabtyre cord 3 can follow even if it is relatively separated from the functional part casing 13, the movable range of the removed heated toilet seat 11 is expanded, and the flush toilet 1 can be cleaned smoothly.

  The cabtyre cord 3 serving as an electric cord has a slightly larger diameter than the cord used in the conventional heating toilet seat 11 in order to improve the separation length between the heating toilet seat 11 and the functional part casing 13. Specifically, as in the past, the entire bundle of a plurality of (four in this embodiment) covered electric wires 31 covered with the copper wire 31a with the insulator 31b is further covered with the sheath material 32 (see FIG. 3). And the other end side is drawn into the functional part casing 13 from the side wall 13c on one side of the bearing housing 13b on which the engaging support shaft 14a protrudes, with respect to one end side connected to the heater wire 2. It is connected to a terminal (not shown) connected to a power source or the like.

  Both side walls 13c and 13c of the bearing housing 13 into which the cabtyre cord 3 is drawn are extremely small in area, and the engagement support shaft 14a is projected. In this embodiment, the cord bush 4 is made as small as possible. Therefore, a connection hole 13d is formed in the side wall 13c in the vicinity of the engagement support shaft 14a, and a cord bush 4 integrally formed with the cord body made of the cap tire cord 3 is formed in the connection hole 13d. It can be inserted.

  The cord bush 4 is a main part of the present embodiment, and the stress concentration generated in the connection portion between the captyre cord 3 and the functional casing 13 as the heating toilet seat 11 is opened and closed, that is, in the connection hole 13d portion. It is formed to prevent this, and is a tubular tube bent at a substantially right angle, in which a part of the cabtyre cord 3 is covered with a relatively hard resin.

  In this embodiment, as shown in FIG. 3, the cord bush 4 includes an electric wire holding material 5 that holds a covered electric wire exposed portion 33 in which the sheath material 32 is peeled from the cap tire cord 3, and the electric wire holding material 5. Further, the bush material 6 is formed in the opening 51 formed in the wire holding material 5. In FIG. 3, 60 is a stress distribution groove formed in the bush member 6, and 61 is an engagement groove formed to bite the edge of the connection hole 13d.

  Furthermore, a plurality of streaks 34 (34a, 34b) are formed in the sheath material 32 of the cabtyre cord 3 that remains inside the bush material 6. In the present embodiment, one of the braided portions 34 a wraps around the bush material 6 to increase the coupling force, and the other brazed portion 34 b is attached to a molding die 9 described later at the time of injection molding of the cord bush 4. The purpose is to prevent the cap tire cord 3 from slipping in the mold 9 when the bushing 6 is injected by fitting with the provided slip prevention piece 90.

  Thus, by forming the sculpture portion 34 in the cabtyre cord 3, it is possible to prevent the positional deviation of the cabtyre cord 3 during molding and prevent deterioration of the quality of the shape, and the binding force with the bushing 6 is reduced. As a result, the cap tire cord 3 and the cord bush 4 are firmly integrated.

  As shown in FIG. 4, the electric wire holding member 5 integrated with the bush member 6 has a straight portion 52 having a plurality of openings 51 formed on the peripheral surface and one end side of the straight portion 52 bent. A pair of substantially L-shaped halved members 5 ′ and 5 ′ having a short bent portion 53 made of resin are molded so as to be connected by a hinge 56 (in FIG. 4, for the sake of simplicity). The halved members 5 'and 5' are divided and shown in FIG. Then, two male locking pieces 54 and 54 are formed on the edge of the straight portion 52 of one half member 5 ′ with a predetermined interval in the front and rear, respectively, and on the outer peripheral edge of the bent portion 53. While one male locking piece 54 is formed, the corresponding female locking pieces 55, 55, 55 are formed on the other half member 5 'and can be engaged with each other. It is said.

  Further, an alignment protrusion 57 is formed on the inner surface of each half member 5 ′ as shown in FIGS. 4 and 5 so that the four covered wires 31 can be bundled in a substantially square shape. Yes.

  That is, the concave portions 57a that are curved in a concave shape corresponding to the outer peripheral curved surface of the covered electric wire 31 are arranged side by side on the slightly end side of the inner peripheral surface of the straight portion 52 in each half member 5 ′ (see FIG. 4). In addition, a projecting portion 57b that projects sharply is formed between the left and right concave portions 57a, and each covered electric wire 31 is firmly held in each of the concave portions 57a via the projecting portion 57b. ing.

  In the present embodiment, the wire holding material 5 and the bushing material 4 are injection-molded from the same material so as to be more reliably integrated. As the molding material, vinyl chloride or any other material suitable for the application can be used as appropriate, but in any case, a synthetic resin that is solidified with appropriate hardness is preferable. However, it is not always necessary to use the same material for both, and the wire holding material 5 may be formed of a thin metal material, for example.

  Thus, the covered wire exposed portion 33 is provided by peeling the thick sheath material 32 from the cap tire cord 3 having a larger diameter than the conventional one to expose the covered wire 31, and the covered wire exposed portion 33 is held by the wire holding. By wrapping with the material 5, the cord bush 4 can have a small diameter and a small size, but can secure sufficient strength and protect the internally covered electric wire 31 (copper wire 31 a). In addition, since the bushing material 6 wraps around the opening 51 of the wire holding material 5 during injection molding, the coupling force between the wire holding material 5 and the bushing material 6 is further improved. There is no problem in durability as the cord bush 4.

  Accordingly, the cabtyre cord 4 provided with the cord bush 4 can be suitably used for the heating toilet seat 11 of the flush toilet 1 as described above, and is a narrow side surface 13c of the bearing housing 13b to which the heating toilet seat 11 is attached. Also, there is no hindrance to the attachment of the cord bush 4, and the cord bush 4 can be extended from the base end side of the heating toilet seat 11 into the functional part casing 13 in a state invisible from the outside.

  Here, the method for forming the cord bush 4 described above will be described with reference to FIGS. 6 is an explanatory view showing a method of forming the cord bush 4 using the forming die 9, and FIG. 7 is a cross-sectional view taken along the line II of FIG. The molding die 9 is formed of an upper die 9a and a lower die 9b. In FIG. 6, only the lower die 9b is shown, but both the upper die 9a and the lower die 9b are substantially L-shaped cords. A recess 91 that is shaped like the bush 4 is formed.

  At the time of injection molding, the captyre cord 3 peels off the sheath material 32 in accordance with the location where the cord bush 4 is formed to form a covered electric wire exposed portion 33, and in the vicinity of the covered electric wire exposed portion 33. An annular braided portion 34 is formed. Then, the half members 5 ′ and 5 ′ are set on the covered wire exposed portion 33. The half member 5 'is formed by injection molding so that the opening 51 and the hinge 56 are formed on the peripheral surface. And the said hinge 56 is set to the shaping | molding die 9 according to the predetermined location in the recessed part 91. FIG.

  At this time, a part of the sheath material 32 is located behind the wire holding material 5 in the recess 91.

  Then, together with the upper mold 9a (see FIG. 7), a bush forming material made of the same material as the wire holding material 5 is injected into the mold 9 from the injection port 92, cured, and then removed from the mold. The cord bush 4 which concerns on a form and by extension, the cabtyre cord 3 provided with this cord bush 4 are obtained. In FIG. 6, 93 is a runway.

  In this way, the sheath material 32 is peeled from the cap tire cord 3 to form the covered wire exposed portion 33, and the covered wire exposed portion 33 is held by the wire holding material 5 having the opening 51 formed on the peripheral surface. Because the electric wire holding material 5 and a part of the sheath material 32 are set in the mold 9 and then the bush forming material is injected into the mold 9 and then removed from the mold 9. Further, the coupling force between the wire holding member 5 and the bushing member 6 is further improved, and the cord bushing 4 holding a sufficient strength can be easily formed even if it is small.

  Further, since the covered wire exposed portion 33 from which the sheath material 32 has been peeled is easily deformed, the cord bush 4 bent at a substantially right angle as shown in the figure can be easily formed, and the wire holding material 5 is provided. Even with a small diameter, a cord bush having sufficient strength can be formed.

  By the way, in this embodiment, as shown in FIG.6 and FIG.7, the fitting piece 90 provided in the said shaping | molding die 9 is fitted by the at least 1 bracing part 34b among the several bracing parts 34. FIG. I try to let them. On the other hand, one end of the wire holding member 5 is held by the mold 9 and positioned.

  Therefore, when the bush forming material is injected and injected, the cap tire cord 3 does not move in the injection direction even with respect to the pressure from the bush forming material, and it is possible to prevent the occurrence of molding defects.

  In addition, as shown in FIG. 8, the fitting piece 90 and the reinforcing portion 34b corresponding to the fitting piece 90 are not necessarily provided. In this case, the configuration is as shown in FIG. 8, but it is needless to say that a plurality of streaks 34 may be formed.

  As described above, in the flush toilet 1 provided with the heating toilet seat 11 according to the present embodiment, the cord bush 4 is kept as small as possible while maintaining a sufficient strength even if the diameter of the cabtyre cord 3 is increased. As a result, the restriction on the mounting position of the cord bush 4 is reduced in the outer portion such as a bearing housing that pivotally supports the heating toilet seat 11, and the degree of freedom in designing the flush toilet 1 including the heating toilet seat 11 and the functional portion casing 13 is reduced. Will increase.

  Here, the cord guide 8 provided in the toilet seat body 11 of the heating toilet seat 11 will be described.

  The cord guide 8 has a cord pull-in function, is formed in a substantially U-shaped cross-sectional view that accommodates the captyre cord 3 over a predetermined length, and contacts the heater wire 2 disposed on the inner surface of the toilet seat body 11. A guide main body 81 which is mounted so as to be separated, a coil spring 80 which is disposed in the guide main body 81 and surrounds the cabtyre cord 3, and a coil spring 80 when the coil spring 80 is in a free state. And a stopper piece 82 attached to the portion of the cabtyre cord 3 protruding from the inside. The coil spring 80 is supported at the proximal end of the guide body 81.

  Further, pin bodies 83, 83 project from the left and right sides of the stopper piece 82, while guide grooves 84, 84 are formed on the left and right side surfaces of the guide body 81, and the pin bodies 83, 83 are formed in the guide grooves 84, 84. So that the stopper piece 82 can smoothly slide in the guide body 81.

  The lengths of the guide grooves 84 and 84 are set according to the amount of the cabtyre cord 3 pulled out from the toilet seat body 11, and the base end portions 84a of the guide grooves 84 and 84 at this time are formed on the coil spring 80. A stopper function is provided so as to be in a position corresponding to the tension. If the tension of the coil spring is too strong, an excessive load is applied to the cabtyre cord 3, so that it is set to a force sufficient to pull the loose cabtyre cord 3.

  In FIG. 2, reference numeral 85 denotes a toilet seat mounting engagement piece formed at the tip of the code guide 81 and can be easily attached to and detached from a hook (not shown) formed on the back surface of the toilet seat body 11. In addition, a part of the electric cord at the tip of the stopper piece 83 is not the cabtyre cord 3, but the sheath material 32 having a predetermined length is peeled to expose the plurality of covered electric wires 31, which are twisted. The twisted wire portion 38 is used. Moreover, in order to facilitate the drawing and storing of the cord, the stranded wire portion 38 is wound and bent.

  With the above configuration, when the cabtyre cord 3 is pulled out of the toilet seat body 11 when the heated toilet seat 11 is removed, the stopper piece 82 provided on the distal end side of the cabtyre cord 3 in the guide body 81 contracts the coil spring 80. However, the cabtyre cord 3 is smoothly pulled out by being guided by the guide grooves 84 and 84. Moreover, the amount of pull-out is not excessively pulled out because the pin bodies 83, 83 of the stopper piece 82 are in contact with the base end portions 84a of the guide grooves 84, 84 to prevent sliding. By acting this stopper function, it is possible to prevent the coil spring 80 from becoming loose.

  On the other hand, when the heated toilet seat 11 removed is returned to a predetermined position on the toilet body 10, the cabtyre cord 3 becomes free and the coil spring 80 extends to automatically pull the cabtyre cord 3 into the toilet seat body 11. be able to.

  Although the present invention has been described above through the embodiments, the present invention is not limited to the configurations of the embodiments described above. It is free to make design changes as appropriate without departing from the spirit of the present invention.

It is explanatory drawing of the flush toilet equipped with the heating toilet seat which concerns on this embodiment. It is explanatory drawing which shows the state which removed the heating toilet seat while showing the back surface of the said heating toilet seat. It is explanatory drawing by the cross-sectional view of the cord bush which concerns on this embodiment. It is explanatory drawing of the electric wire holding material with which the said code bush is provided. It is explanatory drawing of an electric wire holding material similarly. It is explanatory drawing which shows the shaping | molding method of the cord bush using a shaping | molding die. It is explanatory drawing of the air release valve which is sectional drawing in the II line | wire of FIG. It is explanatory drawing of the cord bush which concerns on other embodiment. It is explanatory drawing which shows the conventional cord bush. It is explanatory drawing which shows the conventional cord bush.

Explanation of symbols

1 Flush toilet 2 Heater wire 3 Cap tire cord (electric cord)
4 Cord Bush 5 Wire Holding Material 6 Bush Material 8 Code Guide 9 Mold 13 Functional Part Casing 31 Covered Wire 32 Sheath Material 33 Covered Wire Exposed Portion 34 Braided Portion 51 Opening 90 Fitting Piece

Claims (10)

  A cord bush formed on an electric cord further coated with a sheathed wire with a sheath material, the wire holding material holding the covered wire exposed portion from which the sheath material has been peeled, and the bushing material covering the outside of the wire retaining material A cord bushing comprising: the bushing material biting into an opening formed in the wire holding material.   The cord bush according to claim 1, wherein a plurality of streaks are formed in the sheath material of the electric cord that is left inside the bush material.   The cord bush according to claim 1 or 2, wherein the bush material and the wire holding material are formed of the same material. A method for forming a cord bush formed on an electric cord obtained by further covering a covered electric wire with a sheath material,
The sheath material is peeled to form a covered electric wire exposed portion, and the covered electric wire exposed portion is held by an electric wire holding material having an opening on the peripheral surface, and the electric wire holding material and a part of the sheath material Is then set in a mold, and then a bush forming material is injected into the mold and then demolded to obtain a cord bush.   A braided portion is formed near the exposed portion of the sheathed wire of the sheath material, and a fitting piece provided in the mold is fitted into at least one of the braided portions, and the electric cord is held in the mold. The method for forming a cord bush according to claim 4.   The cord bush forming method according to claim 4 or 5, wherein the electric wire holding member is formed of the same material as the bush forming material. An electrical cord comprising a cord body in which a covered electric wire is further covered with a sheath material, and a cord bush formed on the cord body,
The cord bush is composed of an electric wire holding material holding the covered electric wire exposed portion from which the sheath material has been peeled off, and a bushing material covering the outside of the electric wire holding material, and the cord bush is formed in the opening formed in the electric wire holding material. An electrical cord formed by interposing a bushing material.   8. The electric cord according to claim 7, wherein the cord bush has a bent shape. In a heating toilet seat comprising a heater wire disposed on the back surface of the toilet seat body, and an electric cord further coated with a sheath material on a covered electric wire connected to the heater wire,
A cord bush is formed on the electric cord, and the cord bush is composed of an electric wire holding material holding the covered electric wire exposed portion from which the sheath material is peeled, and a bushing material covering the outer side of the electric wire holding material. A heating toilet seat, wherein the bushing material is inserted into an opening formed in the wire holding material.   The toilet seat body is attached to a functional part casing placed on the toilet body, and the cord bushing is bent and attached to a side wall of the functional part casing so that the electric cord is passed through the cord bushing. The heated toilet seat according to claim 9, wherein the heated toilet seat is extended inward.

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