KR102096585B1 - Method for fabricating breathable heating cushion - Google Patents

Abstract

Disclosed is a method of manufacturing a breathable heating cushion which comprises a breathable heating pad which includes a breathable sheet through which gas can pass in transverse, lengthwise, and thickness-wise directions, an electrothermal wire fixed on the breathable sheet, and a fixing yarn which fixes the electrothermal wire on the breathable sheet. According to the present invention, the disclosed method of manufacturing the breathable heating cushion comprises: a step of preparing the breathable heating pad to prepare the breathable heating pad; and a step of installing the breathable heating pad to allow the breathable heating pad to come in contact with and be supported by an upper side surface of an elastic block, which is a block which contracts while being elastically restorable, with a plurality of ventilation holes penetrating in a thickness-wise direction. The step of preparing the breathable heating pad includes: a step of supplying fabric which supplies the fabric for the breathable sheet, which is extended in one direction to have a predetermined width, to be unfolded on a worktable; a step of maintaining a tensile force in a widthwise direction to press both end units of the fabric in a widthwise direction by a pair of widthwise pressurizing units extended parallelly to a lengthwise direction, and pull the fabric in its own widthwise direction; a step of maintaining the tensile force in a lengthwise direction to press the fabric by a pair of pressurizing units in a lengthwise direction, which is apart in a lengthwise direction of the fabric and is extended in a direction which is at right angles to the pair of pressurizing units in the widthwise direction, and pull the fabric in its own lengthwise direction; a step of arranging the electrothermal wire to arrange the electrothermal wire on an upper side surface of an inner area of the fabric limited by the pair of pressurizing units in the widthwise direction and the pair of pressurizing units in the lengthwise direction; and a step of fixing the electrothermal wire to saw and fix the electrothermal wire on the fabric with the fixing yarn. The present invention aims to provide the method of manufacturing the breathable heating cushion, which is able to prevent the breathable heating cushion from being twisted or wrinkled.

Description

Method for fabricating breathable heating cushion {Method for fabricating breathable heating cushion}

The present invention relates to a method for manufacturing a breathable heating cushion applicable to various chairs such as an office chair, a beauty chair, and a car seat.

Some of the chairs or car seats may be provided with a warm air function that warms the body by blowing warm air to a supported body part. To provide a warm air function, the chair or car seat is provided with a breathable heating cushion. The breathable heating cushion may include an elastic block and a breathable heating pad supported on the elastic block. A breathable heating pad according to an example of the related art includes a felt in which a plurality of vent holes are formed, and a heating wire fixed to the felt. The breathable heating pad provided with the felt and the heating wire has low productivity and high production cost because a plurality of vent holes must be processed in the felt. In addition, if too many vent holes are formed in the felt, the felt is structurally weak, and the breathable heating pad is warped or wrinkled.

A breathable heating pad according to another conventional example includes a breathable sheet through which a gas can pass in the horizontal, vertical, and thickness directions, and a heating wire fixed to the breathable sheet. However, the breathable heating pad provided with the breathable sheet and the heating wire, when the heating wire is fixed to the breathable sheet with a fixing yarn, the breathable sheet is pulled by the fixing yarn so that the breathable heating pad is warped or wrinkled unevenly do.

Republic of Korea Registered Patent Publication No. 10-1697013

The present invention provides a method for manufacturing a breathable heating cushion having an elastic block and a breathable heating pad, wherein the breathable heating pad is not warped or unevenly wrinkled.

The present invention provides a breathable heating pad having a breathable sheet through which gas can pass in the horizontal, vertical, and thickness directions, a heating wire fixed to the breathable sheet, and a fixing yarn fixing the heating wire to the breathable sheet. As a method of manufacturing a provided breathable heating cushion (cushion), a step of preparing a breathable heating pad for preparing the breathable heating pad, and a block that is resiliently retractable, a plurality of vents penetrating in the thickness direction of the elastic block formed A step of installing a breathable heating pad for contacting and supporting the breathable heating pad on an upper side, wherein the preparing of the breathable heating pad is supplied with the fabric of the breathable sheet having a predetermined width and extending in one direction unfolded on a work surface. The fabric supply step, the both ends in the width direction of the fabric parallel to the longitudinal direction The tension maintaining step in the width direction to pull the fabric in its width direction by pressing it with the pair of extended width direction pressing portions, the pair spaced apart in the length direction of the fabric and extended in a direction perpendicular to the pair of width direction pressing portions On the inner region of the fabric defined by the lengthwise pressing portion of the longitudinal tension maintaining step of pulling the fabric in its longitudinal direction by pressing the fabric in the longitudinal direction, the pair of width direction pressing portion and a pair of length pressing portion Provided is a method for manufacturing a breathable heating cushion comprising a heating wire wiring step of wiring the heating wire on the side, and a heating wire fixing step of sewing and fixing the heating wire to the fabric with the fixing yarn.

The pair of width-direction pressing portions and the pair of length-directing pressing portions are respectively an actuator, and a rotation rod extending in a horizontal direction that is driven by the actuator and rotates by a predetermined angle, and When connected to a rotating rod, the rotating rod may be provided with a pressing blade (blade) pressing the fabric.

The actuator is provided with an air cylinder, the rotating rod rotates by the predetermined angle when the force of the pneumatic cylinder acts, and returns to its original position by rotating in the opposite direction if the force of the pneumatic cylinder does not act can do.

The heating wire wiring step and the heating wire fixing step may be performed by a sewing head installed on the inner region of the fabric.

The breathable sheet is a sheet in which a plurality of holes are uniformly distributed, the lower and upper net sheets arranged spaced apart from each other, and the lower end is fixedly supported by the lower net sheet and the upper end is the upper net. It may be spacer fabrics having a plurality of elastic yarns that are fixedly supported on a sheet and spaced from each other.

The method for manufacturing a breathable heating cushion according to the present invention includes an air flow box in which a space in which air flows is formed and at least one intake hole is formed on the lower side and at least one exhaust hole is formed on the upper side, and the at least one intake hole is introduced Blowing module preparation step of preparing a blowing module having a fan installed inside the air flow box so that the air is boosted and discharged to the at least one exhaust hole, and the lower surface of the elastic block and the top of the air flow box A blower module installation step of installing the blower module so that the side faces may be further provided.

The blowing module is a tube-shaped member formed of a rubber material, and is fixedly coupled to the air flow box so as to protrude upwardly in alignment with the at least one exhaust hole, and is folded to be elastically restorable on an outer circumferential wall and overlapped. It is provided with a wrinkle (wrinkle) and at least one guide tube that does not block the air flow even if it is contracted to be elastically resilient in its longitudinal direction, and the step of installing the blowing module comprises: a plurality of the elastic blocks It may include a guide tube insertion step of aligning and fitting the at least one guide tube in at least one of the ventilation holes.

In the lower surface of the elastic block, an air flow box fitting groove is formed so as to fit the air flow box, and in the step of installing the blower module, the upper surface of the air flow box faces upward. And inserting an air flow box into the air flow box fitting groove.

In the step of installing the breathable heating pad, the adhesive is applied only to the corners of the breathable sheet to adhere the corners of the breathable sheet to the upper side of the elastic block, and the center of the breathable sheet does not adhere to the upper side of the elastic block. Sheet bonding.

According to the method for manufacturing a breathable heat generating cushion of the present invention, a breathable heat generating pad that is not warped or unevenly wrinkled is provided on the upper surface of the elastic block. Therefore, there is no discomfort and feels comfortable when sitting on a breathable fever cushion or leaning on a breathable fever cushion. That is, the quality of the breathable heating cushion is improved. In addition, in the process of preparing the breathable heating pad, the operation of sewing and fixing the heating wire to the breathable sheet is automatically performed by the sewing device, but the work defect is reduced to improve the yield and productivity of the product.

On the other hand, according to a preferred embodiment of the present invention further comprising a blower module, warm air is blown to a user sitting on a breathable heating cushion or leaning against a breathable heating cushion, the warming function is improved, and sweating on the breathable heating cushion It is hygienic because it prevents germ propagation because it does not absorb moisture.

1 is an exploded perspective view of an example of a breathable heating cushion.
FIG. 2 is a cross-sectional view of FIG. 1 taken along line II-II, showing a shape in which a breathable heating cushion is assembled.
3 is an exploded perspective view of the blowing module of FIG. 1.
4 is a cross-sectional view of the breathable heating pad of FIG. 1.
5 is a real photograph of another example of the breathable heating pad.
FIG. 6 is an enlarged view of a portion VI of FIG. 5.
7 is a flow chart of a method for manufacturing a breathable heating cushion according to an embodiment of the present invention.
8 is a perspective view showing an example of a sewing device used to perform the step of preparing the breathable heating pad of FIG. 4.
9 is a cross-sectional view of FIG. 8 taken along IX-IX.
10 is a cross-sectional view of FIG. 8 taken along line XX.

Hereinafter, a method of manufacturing a breathable heating cushion according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. Terminology used in the present specification are terms used to properly express a preferred embodiment of the present invention, which may vary according to a user's or operator's intention or customs in the field to which the present invention pertains. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

1 is an exploded perspective view of an example of a breathable heating cushion, and FIG. 2 is a cross-sectional view of FIG. 1 cut along II-II, showing a shape in which the breathable heating cushion is assembled, and FIG. 3 is a view of FIG. 1. 4 is an exploded perspective view of the blower module, and FIG. 4 is a cross-sectional view of the breathable heating pad of FIG. 1. 1 and 2, the breathable fever cushion 10 according to an embodiment of the present invention is used as a seat or a backrest of a chair, a car seat, or a user's back or limbs separately from a chair and a car seat. It can be used as an independent cushion for reclining. The breathable heating cushion 10 includes an elastic block 11, a blowing module 30, and a breathable heating pad (20A).

The elastic block 11 is a resiliently retractable block, and is formed of, for example, a sponge material. The elastic block 11 is formed with a plurality of vent holes 12 extending parallel to the Z axis to penetrate the elastic block 11 in the thickness direction. A plurality of guide tubes 45 of the blower module 30, which will be described later, are fitted to the plurality of vent holes 12 in a one-to-one correspondence. In order for the plurality of guide tubes 45 to be easily fitted into the plurality of vent holes 12 without shrinking in length and diameter, the inner diameter of the vent holes 12 is the diameter of the corresponding guide tube 45 It is slightly larger than the size. In addition, the length of the plurality of ventilation holes 12 in a direction parallel to the Z axis is longer than the length of the corresponding guide tube 45.

Referring to FIGS. 1 to 3 together, the blowing module 30 performs a function of inhaling air from the lower side and blowing up the air, ie, the wind, which has been raised to the upper side. The blowing module 30 includes a pair of fans 38, an air flow box 31, a blowing guide member 40, and a plurality of guide tubes 45. The pair of fans 38 intake air from the outside, pressurize and discharge it, and are fixedly installed inside the air flow box 31. Reference numeral '39' is an outlet opening through which the pressurized air is discharged out of the fan 38. A space in which air discharged from the outlet opening 39 of the fan 38 flows is formed inside the air flow box 31.

The air flow box 31 is a hard case in which an internal space through which air flows is formed. The air flow box 31 includes a base 36 having a flat plate shape and a cover 33 fastened to the base 36. A plurality of exhaust holes 35 corresponding to the plurality of guide tubes 45 on a one-to-one basis are formed in the cover 33, and the plurality of guide tubes 45 are aligned with the exhaust holes 35 to cover the cover 33 ) Is fixedly coupled around the exhaust hole 35. A pair of intake holes 37 are formed in the base 36 so that external air flows into the pair of fans 38. The pair of intake holes 37 correspond one-to-one with the pair of fans 38. The air introduced into the air flow box 31 from the lower side of the air flow box 31 through the pair of intake holes 37 is boosted by a pair of fans 38 through a plurality of exhaust holes 35 The air flow box 31 is discharged upward.

An air flow box fitting groove 17 is formed in the lower surface 16 of the elastic block 11 so as to fit the air flow box 31. Due to the air flow box fitting groove 17, the lower surfaces 16 and 18 of the elastic block 11 are stepped in the lower center 18 and the lower peripheral surface around the central lower surface 18 ( 16). The lower portion 18 of the center portion becomes the bottom surface of the air flow box fitting groove 17 opened downward. When installing the blower module 30, the air flow box 31 fits the air flow box so that the upper side of the air flow box 31, that is, the upper side of the cover 33 faces the lower side 18 of the central portion Fitted in the groove 17, a plurality of guide tubes 45 are fitted in a plurality of one-to-one alignment with the plurality of ventilation holes 12 of the elastic block 11.

The air flow box 31 has a flange 32 extending in the horizontal direction from the bottom edge. When the blowing module 30 is fitted to the air flow box fitting groove 17, the flange 32 may be supported in contact with the periphery of the air flow box fitting groove 17, that is, the lower surface 16 around the periphery. Meanwhile, as illustrated in FIG. 2, the air flow box fitting groove 17 may not be formed in the elastic block 11. In this case, the upper side of the air flow box 31 faces the lower side of the elastic block 11 but may be positioned slightly spaced apart, and the air flow box 31 supports the elastic block 11 (frame) ) (Not shown) may be fixedly installed.

The plurality of guide tubes 45 cover the air discharged from the outlet openings 39 of the pair of fans 38 and flow in the air flow box 31 to the upper side of the air flow box 31. At 33, they protrude upward from each other. The plurality of guide tubes 45 are formed of a rubber material, for example, silicone rubber.

Each of the plurality of guide tubes 45 is formed with a hollow so that air flows in parallel with the Z axis. The outer peripheral wall of the guide tube 45 that defines the hollow is formed with a plurality of wrinkles 46 that are folded so as to be elastically resilient. That is, the guide tube 45 has a shape similar to a so-called 'corrugated tube'. The guide tube 45 is provided with a flange (48) that extends in the radial direction with a large diameter at the bottom, and the flange (48) is tightly coupled around the exhaust hole (35) of the cover (33). For example, a method such as applying an adhesive or attaching a double-sided adhesive tape may be applied. Specifically, the upper surface of the flange 48 in the state in which the flange 48 penetrates through the exhaust hole 35 and is inserted into the air flow box 31 has a cover 33 around the exhaust hole 35 It can be bonded to the inner surface. In this case, the guide tube 45 is not easily separated from the air flow box 31 even if the guide tube 45 is pulled upward in a direction away from the air flow box 31.

When the upper end of the guide tube 45 is close to the air flow box 31, that is, when pressed downward, the gap between the plurality of wrinkles 46 is overlapped so that the guide tube 45 has a shorter length. It contracts resiliently in the losing direction. However, although the length of the guide tube 45 is short, the inner diameter of the hollow of the guide tube 45 is hardly changed due to the shape of the corrugated tube. Therefore, the flow of air through the hollow is not blocked or broken.

That is, even when the plurality of guide tubes 45 contract and the length of the guide tubes 45 is shortened, the air that is pressurized and discharged from the fan 38 is discharged as in the case where the guide tubes 45 are not contracted. It passes through the inside of the box 31 and is discharged to the upper side of the blowing module 30 through a plurality of guide tubes 45. In other words, there is little difference in the blowing pressure of the blowing module 30 when the lengths of the plurality of guide tubes 45 are shortened or not shortened. When the load applied to the top of the guide tube 45 is removed, the guide tube 45 is elastically restored to its original length before being shortened.

The blowing induction member 40 is a member for guiding the air discharged from the pair of fans 38 to the plurality of guide tubes 45 and reducing noise and vibration of the blowing module 30, an air flow box 31 ). The blowing induction member 40 is formed of, for example, a foam resin such as a sponge or urethane. The upper side and the lower side of the blowing induction member 40 are in contact with the lower side of the cover 33 and the upper side of the base 36. A pair of air guide grooves 42 and a pair of fan installation grooves 43 are formed on one side of the pair of air guide grooves 42 in the blowing guide member 40. The air induction groove portion 42 is formed to extend in a horizontal direction from the fan installation groove portion 43 and is formed under the plurality of exhaust holes 35 of the cover 33.

The air discharged from the outlet opening 39 of the pair of fans 38 is blown upward through the plurality of guide tubes 45 in a state in which the loss of flow rate or flow rate is minimized while moving along the air guide groove portion 42. do. Therefore, the air discharged from the plurality of guide tubes 45 does not have a large flow rate variation depending on the distance from the fan 38 and is blown at a uniform flow rate. In addition, noise and vibration of the blowing module 30 are reduced while energy loss due to air flowing in the direction away from the guide tube 45 in the air flow box 31 is reduced.

1, 2, and 4 together, the breathable heating pad 20A is contact-supported to the upper side 15 of the elastic block 11. Specifically, the breathable heating pad 20A may be adhered to the upper side 15 of the elastic block 11 by an adhesive. FIG. 5 is a real image of another example of the breathable heating pad, and FIG. 6 is an enlarged view of a portion VI of FIG. 5, showing the breathable heating pad shown in FIGS. 1, 2, and 4 ( 20A) may be replaced with the breathable heating pad 20B shown in FIGS. 5 and 6.

4 to 6 together, the breathable heating pads 20A and 20B include a breathable sheet 21, an electric heating wire 25, and a fixing yarn 27. The breathable sheet 21 is a sheet through which the gas can pass in the plane direction, that is, in the horizontal and vertical directions, and in the thickness direction. In the embodiment of the present invention, the breathable sheet 21 is flexible spacer fabrics that can be folded or bent.

The spacer fabric 21 is a sheet in which a plurality of through holes are uniformly distributed, and a lower net sheet 22 and an upper net sheet 23 arranged spaced apart from each other up and down, and a plurality of elastic yarns yarn) (24). The lower net sheet 22 and the upper net sheet 23 are nonflammable sheets and are spaced apart from each other. The plurality of elastic yarns 24 are elastically resiliently bent yarns, the lower end being fixedly supported by the lower net sheet 22 and the upper end being fixedly supported by the upper net sheet 23. The plurality of elastic yarns 24 are evenly spaced apart from each other, and two or more do not overlap or twist each other.

The heating wire 25 is a heating element that generates heat by supply of electrical energy, and is fixed in contact with the upper surface of the spacer fabric 21, that is, the surface of the upper net sheet 23. The heating wire 25 extends along the zigzag path at the surface of the upper net sheet 23. The fixing yarn 27 winds the lower net sheet 22 and the upper net sheet 23 together to securely fix the heating wire 25 to the upper net sheet 23. That is, the heating wire 25 and the spacer fabric 21 are wound together with the fixing yarn 27 so that the heating wire 25 is kept in contact with the upper net sheet 23.

The thickness of the spacer fabric 21 may be 2 to 10 mm. If the thickness is thinner than 2 mm, the spacer fabric 21 is too thin, so that the breathable heating pads 20A, 20B can be warped or easily wrinkled, and the spacer fabric when the user sits on the breathable heating pads 20A, 20B (21) lack of elasticity may reduce seating feeling. On the other hand, if the thickness is thicker than 10 mm, the cost of the spacer fabric 21 increases, and the speed of the operation of fixing the heating wire 25 to the spacer fabric 21 using the fixing yarn 27 decreases and the defect rate increases. You can.

Figure 7 is a flow chart of a method for manufacturing a breathable heating cushion according to an embodiment of the present invention, Figure 8 is a perspective view showing an example of a sewing device used to perform the step of preparing the breathable heating pad of Figure 4, Figure 9 is Fig. 8 is a cross-sectional view taken along line IX-IX, and Fig. 10 is a cross-sectional view taken along line XX of Fig. 8. 1 to 7 together, a method for manufacturing a breathable heating cushion according to an embodiment of the present invention, a breathable heating pad preparation step (S10), a breathable heating pad installation step (S20), and a blowing module preparation step (S30), And a blowing module installation step (S40). The breathable heating pad preparation step (S10) is a step of preparing the breathable heating pads 20A and 20B described with reference to FIGS. 4 to 6, the fabric supply step (S11), and the width direction tension maintenance step (S12). , Longitudinal tension maintaining step (S13), heating wire wiring step (S14), heating wire fixing step (S15), and fabric cutting step (S16).

Referring to Figures 4 to 10 together, the step of preparing the breathable heating pad (S10) is automatically performed using a sewing device 160 for manufacturing a breathable heating pad. The fabric supply step (S11) has a predetermined width (width) and in one direction, specifically, the air-permeable sheet 21 extending in a direction parallel to the Y axis based on FIG. 8, that is, the fabric of the spacer fabric (21m) It is a step to supply unfolded on the work table (161).

In the width direction tension maintaining step (S12), both ends of the fabric 21m in the width direction, specifically, parallel to the X axis, with reference to FIG. 8, extend parallel to the length direction of the fabric 21m. It is a step of pulling the fabric (21m) in the width direction of itself by pressing with the pair of width direction pressing portion (165). The longitudinal tension maintaining step (S13) is a pair of longitudinal pressing portions 175 spaced apart in the longitudinal direction of the fabric (21m) and extended in a direction orthogonal to the pair of width pressing portions (165). It is a step of pulling the fabric 21m in the longitudinal direction by pressing the fabric 21m.

The heating wire wiring step (S14) is a heating wire (25) on the upper side of the inner region (IN) of the fabric (21m) defined by the pair of width-direction pressing portions 165 and the pair of length-directing pressing portions 175. ). The heating wire fixing step (S15) is a step of sewing and fixing the heating wire 25 to the fabric 21m with a fixing yarn 27. The fabric cutting step (S16) is a step of cutting the fabric (21m) to which the heating wire 25 is fixed to a predetermined size and shape.

Through the steps S12 and S13, the inner region IN of the fabric 21m surrounded by the pair of widthwise pressing portions 165 and the pair of lengthwise pressing portions 175 is the width direction of the fabric 21m And tension is maintained in the longitudinal direction, that is, in a direction parallel to the X axis and in a direction parallel to the Y axis.

The sewing device 160 includes a workbench 161, a rectangular border frame 162 disposed on the workbench 161, and a pair of inner portions extending parallel to the X axis in the border frame 162 Supported by a pair of X-beams (164) extending parallel to the X-axis, and a pair of longitudinal pressing portions supported by the pair of X-beams (164) and extending parallel to the X-axis ( 175) and a pair of widthwise pressing portions 165 supported by the pair of longitudinal pressing portions 175 and extending parallel to the Y axis, and a sewing head 185.

The pair of longitudinal pressing portions 175, respectively, the longitudinal pressing portion actuator (actuator), the X-direction extending rotating rod (rod) 179, the rotating rod cover (cover) 176, the first and Second X-direction pressing blades 181 and 182 are provided. The X-direction extension rotating rod 179 is a rod extending parallel to the X axis, and is driven by the actuator in the longitudinal direction to rotate by a predetermined angle.

In the embodiment shown in Figures 8 to 10, the longitudinal pressure actuator is provided with an air cylinder (177). The pneumatic cylinder 177 is a cylinder body 178b and a cylinder rod movable in a direction protruding from the cylinder body 178b by the action of air pressure and the opposite direction, that is, a direction inserted into the cylinder body 178b (178r). When the force of the pneumatic cylinder 177 acts, that is, when the cylinder rod 178r moves in a direction protruding from the cylinder body 178b, the X-direction extension rotating rod 179 is pushed against the cylinder rod 178r in advance. Rotate by a fixed angle. When the force of the pneumatic cylinder 177 does not act, that is, when the cylinder rod 178r moves in the direction to be inserted into the cylinder body 178b, the X-direction extension rotating rod 179 rotates in the opposite direction to return to the original position The X-direction rotating rod 179 is biased so as to be used.

The rotating rod cover 176 covers the rotating rod 179 extending in the X direction, and is fixedly supported by the X beam 164 by the bracket 184. The first and second X-direction pressing blades 181 and 182 are connected to the X-direction extension rotation rod 179 so as to protrude from the X-direction extension rotation rod 179 and extend parallel to the X axis. The first and second X-direction pressing blades 181 and 182 are spaced apart, and an end contact member made of a material having high friction and elasticity, such as rubber, is installed at the end. A trigger 180 is fixed to one end of the X-direction rotating rod 179. When the cylinder rod 178r of the pneumatic cylinder 177 moves in a direction protruding from the cylinder body 178b, the trigger 180 is pushed against the cylinder rod 178r, and the trigger 180 and the X direction fixed thereto are extended. The rotating rod 179 is rotated by a predetermined angle around a longitudinal axis of the X-direction rotating rod 179.

The pair of width-direction pressing portions 165 each include a width-direction pressing portion actuator, a Y-direction extending rotating rod 167, a Y-direction pressing blade 169, and the Y-direction extending rotating rod 167. ) And a connecting port 168 connecting the Y-direction pressing blade 169. The Y-direction extension rotating rod 167 is a rod extending parallel to the Y-axis, and is driven by the actuator in the width direction to be rotatable by a predetermined angle.

In the embodiment shown in FIGS. 8 to 10, the actuator in the width direction is provided with an air cylinder 166. Since the pneumatic cylinder 166 provided in the width direction pressing portion 165 has the same structure as the pneumatic cylinder 177 provided in the length direction pressing portion 175, redundant description will be omitted. The Y-direction extending rotation rod 167 rotates by a predetermined angle when the force of the pneumatic cylinder 166 acts, and returns to the original position when the force of the pneumatic cylinder 166 does not act.

Both ends of the rotation rod 167 extending in the Y direction are rotatably supported with respect to the pair of rotating rod covers 176 by the rotating rod bracket 170. The Y-direction pressing blade 169 is connected to the Y-direction rotating rod 167 by a connector 168 and extends parallel to the Y-axis. The Y-direction pressing blade 169 is provided with a distal end contact member made of a material having high friction and elasticity, such as rubber, for example.

The fabric 21m of the spacer fabric 21 is fed over the work table 161 through a slot between one X bar 164 and a rotating rod cover 176 supported thereon, and the other X bar 164 ) And the rotary rod cover 176 supported thereon through the slot 161. The length of the fabric 21m is greater than the distance between a pair of portions extending parallel to the Y axis and parallel to the X axis of the border frame 162. The width of the fabric 21m is smaller than the distance between the pair of portions extending parallel to the Y axis of the border frame 162, and slightly larger than the distance between the ends of the pair of Y-direction pressing blades 169.

As described above, in the state in which the fabric 21m is supplied unfolded on the work table 161, the cylinder rod 177r of the pneumatic cylinder 177 protrudes from the cylinder body 178b to trigger the trigger ( When 180) is pushed, the X-direction extension rotating rod 179 rotates so that the ends of the first and second X-direction pressing blades 181 and 182 descend downward. Accordingly, while the two points in the longitudinal direction extending and spaced apart from each other along the straight line parallel to the X axis in the fabric 21m are pressed by the ends of the pair of first and second X-direction pressing blades 181 and 182 Pulled, the tension is maintained in the longitudinal direction of the fabric (21m).

In addition, when the cylinder rod of the pneumatic cylinder 166 protrudes from the cylinder body, the Y-direction extension rotating rod 167 rotates so that the end of the Y-direction pressing blade 169 descends downward. Accordingly, two points in the width direction extending from the fabric 21m along a straight line parallel to the Y axis and spaced apart from each other are pulled while being pressed by the ends of the pair of Y-direction pressing blades 169, and the fabric 21m ) Is tensioned in the width direction.

As a result, the heating wire 25 in the inner region IN of the fabric 21m defined by the pair of first and second X-direction pressing blades 181 and 182 and the pair of Y-direction pressing blades 169 ), And the tension is kept tight so that the operation of fixing the heating wire 25 with the fixing yarn 27 can be accurately performed. The pair of first and second X-direction pressing blades 181 and 182 press the fabric 21m, and the pair of Y-direction pressing blades 169 press the fabric 21m. It may be performed simultaneously. That is, steps S12 and S13 may be performed simultaneously.

The sewing head 185 is installed on the inner area IN. The heating wire wiring step (S14) and the heating wire fixing step (S15) are performed almost simultaneously by the sewing head 185. As described above, the tension is tightened in the inner region IN of the fabric 21m by the pair of first and second X-direction pressing blades 181 and 182 and the pair of Y-direction pressing blades 169. Since it is retained, the fixing yarn 27 does not warp or unevenly fold in spite of the force of the fixing yarn 27 pulling the fabric 21m in the fixing step S15.

While the pair of longitudinal pressing portions 175 and the pair of pressing portions 165 are stopped and the sewing head 185 moves in the horizontal direction, the heating wire wiring step (S14) and the heating wire fixing step (S15) are performed. On the contrary, the sewing head 185 does not move in the horizontal direction, and the pair of longitudinal pressing portions 175 and the pair of width pressing portions 165 move in the horizontal direction, so that the heating wire wiring step ( S14) and the heating wire fixing step (S15) may be performed.

When steps S14 and S15 are completed, as the cylinder rods of the pneumatic cylinders 166 and 177 return to their original positions in the direction to be inserted into the cylinder body, the pair of Y-direction pressing blades 169 and the pair of first and The second X-direction pressing blades 181 and 182 return to the original position so as to be separated from the original fabric 21m. 9 and 10, the Y-direction pressing blades 169 and the first and second X-direction pressing blades 181 and 182 returned to their original positions are illustrated by dashed lines. Then, the heating wire 25 is wired along a predetermined pattern (pattern) and the fixed fabric 21m is pulled out of the work table 161, and the fabric cutting operation (S16) is performed. The step S16 may be performed by an automatic cutting device or by an operator.

1 to 3, and 7 together, the step of installing a breathable heating pad (S20) is a step of contacting and supporting the breathable heating pad 20A on the upper surface 15 of the elastic block 11. In the step of installing the breathable heating pad (S20), an adhesive is applied only to the edge of the breathable sheet 21 to bond the edge of the breathable sheet 21 to the upper surface 15 of the elastic block 11 and the breathable sheet. The central portion of (21) includes a step of adhering a breathable sheet that does not adhere to the upper surface 15 of the elastic block 11.

In other words, the central portion of the elastic block 11 is a portion that is largely compressed and restored by the action of the user sitting on the breathable heat generating cushion 10 or leaning against the breathable heat generating cushion 10, so that the breathable seat 21 If the central portion and the central portion of the elastic block 11 are adhered to each other, the air permeable heating pad 20A or the elastic block 11 is easily damaged, and durability may be deteriorated. On the other hand, the breathable sheet 21 of the breathable heating pad 20A is not necessarily adhered and fixed to the upper surface 15 of the elastic block 11, and the breathable sheet 21 is the upper surface of the elastic block 11 It is also possible to fix the breathable heating pad 20A to the elastic block 11 by covering the shell (not shown) in a state in contact with (15).

The blowing module preparation step (S30) is a step of preparing the blowing module 30 described with reference to FIGS. 1 to 3. The blowing module installation step (S40) is a step of installing the blowing module 30 so that the lower surface 18 of the elastic block 11 and the upper surface of the air flow box 31 face each other. In the step of installing the blower module (S40), the air flow box 31 is fitted with the air flow box fitting groove of the elastic block 11 so that the upper side of the air flow box 31 of the blower module 30 faces upward. 17) inserting the air flow box to be inserted, and inserting the guide tube 45 to align the plurality of guide tubes 45 in one-to-one alignment with the plurality of vent holes 12 of the elastic block 11 and put it up from the bottom up. .

However, when the air flow box fitting groove 17 is not provided in the elastic block 11, the blowing module installation step S40 does not include the air flow box insertion step. In addition, when the plurality of guide tubes 45 are not provided in the blowing module 30, the step of installing the blowing module (S40) does not include the step of inserting the guide tube. On the other hand, the air blowing module installation step (S40), without installing the air flow box 31 of the air blowing module 30 to be supported on the elastic block 11, a frame for supporting the elastic block 11 (not shown) ).

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will appreciate that various modifications and other equivalent embodiments are possible therefrom. Therefore, the true protection scope of the present invention should be defined only by the appended claims.

10: breathable heating cushion 11: elastic block
20: breathable heating pad 21: spacer fabric
25: heating wire 27: fixed yarn
30: blowing module 31: air flow box
38: pan 45: guide tube
160: sewing machine 165: width direction pressing portion
175: longitudinal pressing portion 185: sewing head

Claims (9)

Breathable heat with a breathable heating pad having a breathable sheet through which gas can pass in the horizontal, vertical, and thickness directions, a heating wire fixed to the breathable sheet, and a fixing yarn fixing the heating wire to the breathable sheet As a method of manufacturing a cushion (cushion),
Preparing a breathable heating pad for preparing the breathable heating pad; And, as a resiliently retractable block, a step of installing a breathable heating pad for contacting and supporting the breathable heating pad on an upper surface of an elastic block having a plurality of ventilation holes penetrating in a thickness direction.
The step of preparing the breathable heating pad,
A fabric supply step of supplying a fabric of a breathable sheet having a predetermined width and extending in one direction to spread on a work table; A step of maintaining the tension in the width direction by pressing both ends of the width direction of the fabric with a pair of width direction pressing portions extending parallel to the length direction of the fabric to pull the fabric in its width direction; A lengthwise tension maintaining step of pressing the fabric with a pair of longitudinal pressing portions spaced apart in the length direction of the fabric and extending in a direction perpendicular to the pair of width pressing portions; A heating wire wiring step of wiring the heating wire on the upper surface of the inner region of the fabric defined by the pair of width pressing portions and the pair of length pressing portions; And fixing the heating wire to sew and fix the heating wire to the fabric with the fixing yarn. According to claim 1,
The pair of width-direction pressing portions and the pair of length-directing pressing portions are respectively an actuator, and a rotation rod extending in a horizontal direction that is driven by the actuator and rotates by a predetermined angle, and A method of manufacturing a breathable heating cushion characterized in that it is connected to a rotating rod and includes a pressing blade that presses the fabric when the rotating rod rotates. According to claim 2,
The actuator is provided with an air cylinder (air cylinder),
The rotating rod is rotated by the predetermined angle when the force of the pneumatic cylinder acts, if the force of the pneumatic cylinder does not act, it rotates in the opposite direction and returns to the original position, characterized in that the method of manufacturing a breathable heating cushion. According to claim 1,
A method of manufacturing a breathable heating cushion, characterized in that the heating wire wiring step and the heating wire fixing step are performed by a sewing head installed on the inner region of the fabric. According to claim 1,
The breathable sheet is a sheet in which a plurality of holes are uniformly distributed, the lower and upper net sheets arranged spaced apart from each other, and the lower end is fixedly supported by the lower net sheet and the upper end is the upper net. Method of manufacturing a breathable heating cushion characterized in that the spacer fabrics (spacer fabrics) having a plurality of elastic yarns spaced apart from each other fixedly supported on the seat. According to claim 1,
An air flow box in which air flows inside is formed and at least one intake hole is formed on the lower side and at least one exhaust hole is formed on the upper side, and air introduced into the at least one intake hole is boosted to the at least one exhaust hole. A blowing module preparation step of preparing a blowing module having a fan installed inside the air flow box to discharge; And an air blowing module installation step of installing the air blowing module so that the lower surface of the elastic block and the upper surface of the air flow box face each other. The method of claim 6,
The blowing module is a tube-shaped member formed of a rubber material, and is fixedly coupled to the air flow box so as to protrude upwardly in alignment with the at least one exhaust hole, and is folded to be elastically restorable on an outer circumferential wall and overlapped. It is provided with at least one guide tube (wrinkle) is provided with at least one guide tube that does not block the air flow even if it is contracted to be elastically resilient in its longitudinal direction,
The step of installing the blowing module comprises a step of inserting a guide tube to align and fit the at least one guide tube one-to-one into at least one of a plurality of ventilation holes of the elastic block. The method of claim 6,
On the lower surface of the elastic block, an air flow box fitting groove (groove) that is stepped so as to fit the air flow box is formed,
The blower module installation step comprises a step of inserting an air flow box to insert the air flow box into the air flow box fitting groove so that the upper side of the air flow box faces upward. . According to claim 1,
In the step of installing the breathable heating pad, the adhesive is applied only to the corners of the breathable sheet to adhere the corners of the breathable sheet to the upper side of the elastic block, and the center of the breathable sheet does not adhere to the upper side of the elastic block. Method for manufacturing a breathable heating cushion, characterized in that it comprises a sheet adhesion step.

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