Hip seat with interlocked airbag and air-band for adjustable wearing fit

Abstract

The present invention relates to a hip seat worn by a caregiver with an infant seated in it, and more specifically, to a hip seat with adjustable fit in which an airbag and an air band member are linked to actively adjust the degree of pressure on the wearer's waist by inflating and deflating air. Accordingly, the hip seat according to the present invention is provided with an airbag (30) that expands or contracts according to the injection or discharge of air inside the seating portion (10), and on one side inside the belt portion (20), an air band member (40) is provided that is connected to the airbag (30) through an air passage (80) and expands by air supplied from the airbag (30) or contracts when the air from the airbag (30) is discharged.

Description

Technology Field

[0001] The present invention relates to a hip seat that allows a guardian, who is the user, to wear it while seating an infant and feel a sense of comfort together with the infant. More specifically, it relates to a hip seat with adjustable comfort in which an airbag inside the seating portion and an air band member inside the belt portion are linked through an air passage, so that when a parent wears the hip seat around their waist, the degree of waist pressure in the belt portion can be adjusted by air pressure. Background Technology

[0002] A typical hip seat includes a seating portion that supports the infant and a belt portion that secures the hip seat to the parent's waist. However, conventional hip seats have a problem in that the tightness of the belt portion is limited to mechanical adjustment using Velcro or buckles, resulting in an uneven fit depending on the wearer's body shape or wearing condition.

[0003] In addition, there are cases where air bags are applied to some hip seats, but even in these cases, they are limited to air bags for seating support, and an air pressure adjustment structure linked to lumbar compression has not been proposed.

[0004] Therefore, there is a need to develop a hip seat that allows for fine adjustment of the fit using air pressure while wearing it, and effectively reduces the burden on parents even when worn for a long time. Prior art literature

[0005] Korean Patent Registration No. 10-2201987 The problem to be solved

[0006] The present invention is designed to effectively solve the above problems at once. The objective of the present invention is to provide a hip seat in which the waist fit can be adjusted by air pressure through the linkage of an airbag and an air band member, to provide a hip seat in which the pressure of the belt part can be easily adjusted even while wearing through an air pump part and a discharge valve, and to provide a hip seat that improves safety and reliability by allowing air flow only when worn. means of solving the problem

[0007] To achieve the above objective, the fit-adjustable hip seat according to the present invention, in which an airbag and an air band member are interlocked, comprises:

[0008] A hip seat comprising a seating portion capable of seating an infant, and belt portions provided on both sides of the seating portion so as to be worn around the waist of a guardian,

[0009] An airbag that expands or contracts according to the injection or discharge of air is provided inside the seat portion, and an air band member that is in communication with the airbag through an air passage is provided on one side inside the belt portion and expands by air supplied from the airbag or contracts when the air from the airbag is discharged, and the airbag may be provided with an air pump portion configured to inject air unidirectionally into the internal space of the airbag by a compression operation, and a valve portion for selectively discharging air from the internal space of the airbag to the outside.

[0010] Additionally, an air hole portion is formed on one side of the front portion of the seat portion and corresponding to the valve portion to communicate the internal space of the seat portion with the outside, and the valve portion may include an opening formed in the airbag with the upper and lower ends open, a discharge valve disposed inside the opening so that pressing operation is possible when pressed from the outside, and a spring member that elastically restores the discharge valve to a sealed position.

[0011] As a preferred embodiment of the present invention, when the discharge valve is not pressed, the lower part of the opening is closed by the elastic force of the spring member, and when the discharge valve is pressed by a pressing operation, the lower part of the opening is opened so that air in the internal space of the airbag is discharged to the outside from the opening or the valve part. When a parent wears the hip seat, the airbag is inflated as the air pump part is repeatedly compressed, and in conjunction with this, air is supplied from the airbag through the air passage so that the air band member inflates together, thereby increasing the degree of waist pressure of the belt part. When the discharge valve is pressed, the air from the airbag and the air band member is discharged, thereby decreasing the degree of waist pressure of the belt part.

[0012] In addition, as a preferred embodiment of the present invention, the air pump unit has a dome-shaped compression part to facilitate compression operation at the front of the seat portion, and the discharge valve is inserted and positioned inside the opening, with its lower portion protruding into the internal space of the airbag, and is elastically supported by the spring member, so that when compressed, the spring member is compressed to connect the internal space of the airbag with the opening, and when compressed, it automatically returns to its original position by the elastic force of the spring member to close the lower portion of the opening and seal the internal space of the airbag.

[0013] In addition, a sealing member may be provided at the lower end of the discharge valve to securely close the lower part of the opening and maintain a sealed state of the internal space of the airbag.

[0014] In addition, the airbag and the air passage may be connected through a connecting connector, and the inner surface of the belt portion may be provided with a mesh material or a breathable material.

[0015] In addition, as a preferred embodiment of the present invention, the air passage may be provided with an air transfer delay member that controls the flow of air transferred from the airbag to the air band member, and the air transfer delay member may include a blocking member that is arranged to be movable in the vertical direction inside the housing and blocks the exit cross-section of the inlet air passage, an elastic support member arranged below the blocking member and elastically supporting the blocking member so that the blocking member can move in the vertical direction, and a cut portion formed in the blocking member that selectively connects the inlet air passage and the outlet air passage as the vertical position changes according to the movement of the blocking member.

[0016] In addition, as an embodiment, a pressure chamber communicating with the inlet air passage is formed on the upper side of the blocking member, and the air pressure transmitted through the inlet air passage acts on the upper surface of the blocking member, thereby configuring the blocking member to move downward.

[0017] The above air transfer delay member may be configured to block the transfer of air to the outlet air passage until a preset critical pressure value is reached, even if the air pressure of the airbag increases, so that the airbag inflates preferentially, and when the air pressure of the airbag reaches above the critical pressure value and the position of the cut portion moved downward by the blocking member overlaps with the cross-sectional position of the inlet air passage, the inlet air passage and the outlet air passage are connected through the cut portion so that air is transferred to the air band member.

[0018] In addition, the elastic force of the elastic support can be set to correspond to the critical pressure value.

[0019] In addition, as one embodiment, the air band member may be configured to allow inflation only when the seating portion is in close contact with the front of the parent's abdomen while the parent is wearing the hip seat around their waist, and may be configured so that air flow between the airbag and the air band member is blocked when the hip seat is separated from the waist. Effects of the invention

[0020] According to the hip seat of the present invention,

[0021] 1) The degree of waist compression can be adjusted with simple pump compression or valve operation while wearing, improving comfort and ease of use.

[0022] 2) The airbag and air band components expand and contract in conjunction to simultaneously ensure seating stability and a snug fit against the waist, and pressure can be immediately and freely adjusted through the operation of the pump and discharge valve even while wearing.

[0023] 3) After the seat support is first secured by the air transmission delay part, waist compression is applied, thereby improving wearing stability.

[0024] 4) It can flexibly respond to differences in user body shape, wearing time, and changes in infant weight, and can effectively reduce the burden on the user even when worn for a long time. Brief explanation of the drawing

[0025] FIG. 1 is an overall perspective view schematically showing a hip seat with adjustable fit in which an airbag and an air band member are interlocked according to a preferred embodiment of the present invention. FIG. 2 is a drawing illustrating the configuration and coupling relationship of an airbag placed inside the seating portion according to one embodiment of the hip seat illustrated in FIG. 1. FIG. 3 is a drawing for explaining the structure in which the airbag and air band member of the present invention communicate through an air passage. FIG. 4 is a drawing showing an air pump section and a valve section in an airbag according to one embodiment of the present invention. FIG. 5 is a cross-sectional view showing the structure of an exhaust valve according to one embodiment of the present invention, where FIG. 5a shows a sealed state in which the exhaust valve is not pressed, and FIG. 5b shows a cross-sectional view in which the exhaust valve is pressed and air in the internal space of the airbag is discharged. FIG. 6 is a drawing illustrating that the hip seat of the present invention can adjust the wearing comfort by adjusting the degree of pressure of the belt portion through an air band member. FIG. 7 is a cross-sectional view for explaining the configuration and operation process of an air transfer delay member provided in the air passage of the present invention, FIG. 7a shows the state of the blocking member and air flow when the air pressure of the airbag is below a critical pressure value, and FIG. 7b shows the state of the blocking member and air flow when the air pressure of the airbag reaches above a critical pressure value. FIG. 8 is a drawing for explaining the structure of an air pump unit according to one embodiment of the present invention. Specific details for implementing the invention

[0026] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings are examples to aid understanding and do not limit the scope of the present invention.

[0027] The airbag (30) of the present invention is an elastic sealing member made of synthetic resin material that is disposed in the internal space of the seating portion (10) and configured to expand or contract according to the injection or discharge of air, and functions as an air supply source for regulating waist pressure of the belt portion (20) while simultaneously ensuring seating stability of the seating portion (10) (i.e., supporting the seating surface which is the upper surface of the seating portion (10)).

[0028] As shown in FIGS. 2, 4 and FIGS. 5a and 5b, the airbag (30) is formed as a sealed elastic container having an internal space (31), and the internal space (31) is not directly connected to the outside and is configured so that air is introduced or discharged only through an air pump part (50) and a valve part (60).

[0029] In one embodiment, the airbag (30) may be formed of rubber, synthetic resin, TPU, silicone-based elastomer, or a similar material having elasticity and airtightness, and is configured to minimize deformation or damage even with repeated expansion and contraction.

[0030] In addition, the airbag (30) may be formed with an outer shape that corresponds to the internal shape of the seating portion (10), so that when an infant is seated, the load is distributed rather than concentrated locally.

[0031] The air band member (40) of the present invention is an elastic sealing member disposed inside the belt portion (20) and configured to expand or contract by air supplied from the airbag (30), and functions as a pressure means for actively adjusting the pressure applied to the waist circumference of the guardian.

[0032] As shown in FIGS. 2 and 6, the air band member (40) is positioned internally to extend along the longitudinal direction of the belt portion (20) and is positioned to correspond to at least the inner side direction that is in close contact with the guardian's waist.

[0033] In one embodiment, the air band member (40) may be formed in a band shape, a tube shape, or a shape in which a plurality of air pockets are connected, and is continuously arranged over a certain area along the width direction of the belt portion (20) so that the waist pressure is dispersed rather than concentrated at a specific point.

[0034] Additionally, the air band member (40) may be formed from rubber, TPU, silicone, a synthetic resin-based elastomer, or a similar material having both airtightness and elasticity.

[0035] Accordingly, it is configured to expand by protruding or rising inwardly when air is injected into the belt portion (20), and to be restored to its original shape when air is discharged.

[0036] In addition, the air band member (40) has a thickness and elastic modulus set so that fatigue failure does not occur even with repeated expansion and contraction, and so that no foreign body sensation or local pressure occurs in the waist area even when worn for a long time.

[0037] The air band member (40) of the present invention is configured to communicate with the internal space (31) of the airbag (30) through the air passage (80).

[0038] Accordingly, when air is injected into the airbag (30) and the internal pressure increases, the air is transferred to the air band member (40) through the air passage (80) and the air band member (40) expands.

[0039] As will be described later, conversely, when air in the internal space (31) of the airbag (30) is discharged by the pressing operation of the valve part (60), the air delivered to the air band member (40) is also discharged in the reverse direction through the air passage (80), causing the air band member (40) to contract.

[0040] That is, the air band member (40) is not a structure in which air is injected independently, but functions as a pressurizing member that is linked dependently to changes in air pressure of the airbag (30).

[0041] The air pump unit (50) of the present invention is positioned at the front of the seating unit (10) so that the user or guardian (parent) can repeatedly compress it with their hand while wearing the hip seat (e.g., point P in FIG. 2), and is configured to suck in external air through compression operation and inject it in one direction into the internal space (31) of the airbag (30).

[0042] As an embodiment of the air pump unit (50) described above, the air pump unit (50) may include, as illustrated in FIG. 8, a dome-shaped compression unit (51) that is deformed when pressed from the outside, a pump chamber (52) formed inside the compression unit (51), an intake passage (53) which is a passage for external air to flow into the pump chamber (52), a discharge passage (54) which is a passage for air to be discharged from the pump chamber (52) to the internal space (31) of the airbag (30), a first one-way valve (55) disposed in the intake passage (53) to allow only the inflow of external air, and a second one-way valve (56) disposed in the discharge passage (54) to allow only the flow of air toward the airbag (30).

[0043] Here, the first one-way valve (55) and the second one-way valve (56) can be implemented as known check valves, flap valves, duckbill valves, ball check valves, etc., and the present invention is not limited to a specific valve structure.

[0044] The above-mentioned compression part (51) includes a dome shape to facilitate compression operation or pressing from the outside, so that when a user presses the dome-shaped part, it deforms.

[0045] The air injection operation relationship of the air pump unit (50) according to one embodiment is described in more detail as follows.

[0046] (a) Compression step (discharge step)

[0047] When a user presses the compression part (51) with their hand, the compression part (51) undergoes elastic deformation, causing the volume of the pump chamber (52) to decrease and the internal pressure to increase. In one embodiment, a compression transmission member (51A) may be interposed between the compression part (51) and the pump chamber (52) to effectively transmit the pressure applied to the compression part (51) from the outside to the pump chamber (52). The compression transmission member (51A) may be implemented in various known configurations or structures capable of performing this function.

[0048] Accordingly, the air inside the pump chamber (52) forms a pressure gradient that attempts to move into the airbag (30) internal space (31) through the discharge path (54). At this time, when the pressure in the pump chamber (52) rises, the first one-way valve (55) is closed by the reverse pressure to block backflow to the outside, and the second one-way valve (56) is opened by the forward pressure so that the air in the pump chamber (52) is injected into the airbag (30) internal space (31).

[0049] That is, during the compression stage, the air in the pump chamber (52) moves to the airbag (30), and air leakage or backflow to the outside is suppressed.

[0050] (b) Restoration phase (inhalation phase)

[0051] When the user removes their hand from the compression part (51), the compression part (51) is restored to its original shape by its own elastic force, increasing the volume of the pump chamber (52) and decreasing the internal pressure (forming negative pressure).

[0052] Accordingly, the second one-way valve (56) is closed by the airbag (30) side pressure (relatively high pressure) to block backflow of air inside the airbag (30) to the pump side, and the first one-way valve (55) is opened by the external pressure so that external air flows into the pump chamber (52) through the intake path (53).

[0053] That is, during the restoration phase, external air is filled into the pump chamber (52), and the air inside the airbag (30) is maintained.

[0054] (c) Cumulative injection due to repeated compression

[0055] As the above compression and restoration steps are repeated, the pump chamber (52) repeatedly sucks in external air and discharges it into the internal space (31) of the airbag (30), so that air accumulates in the internal space (31) of the airbag (30) and the airbag (30) gradually expands.

[0056] By operating the first and second one-way valves (55, 56) as described above, even if the user only repeats the action of compressing the compression part (51) and then releasing their hand, the air of the airbag (30) does not flow back to the pump chamber (52) or the outside, and a structure is implemented in which air accumulates in stages in the internal space (31) of the airbag (30).

[0057] Therefore, even when wearing a hip seat, the support force of the seating portion (10) and the waist pressure of the belt portion (20) can be increased with only one-hand operation without a separate separation device or complex operation.

[0058] In addition, as an embodiment, the air pump unit (50) can be configured to allow air injection within a certain range by means of the opening and closing characteristics of the second one-way valve (56) and the restoring force of the compression unit (51), even if the discharge resistance increases as the pressure in the internal space (31) of the airbag (30) increases.

[0059] Additionally, to prevent excessive inflation of the airbag (30), a safety discharge structure (e.g., a fine leakage structure, a pressure relief valve) that exhausts at a pressure above a set pressure may be added to the pump chamber (52) or discharge path (54), but the present invention is not limited thereto.

[0060] In the present invention, the functions are divided such that the air pump unit (50) is dedicated to air injection, and the valve unit (60) is dedicated to selective air discharge.

[0061] That is, the air injected by the one-way valve structure of the air pump unit (50) is maintained, and the air in the internal space (31) of the airbag (30) is discharged to the outside through the air hole unit (70) only when the user presses the discharge valve (62) of the valve unit (60) to open the opening (61) (see FIG. 5a, FIG. 5b).

[0062] Meanwhile, external air flowing into the suction path (53) of the air pump unit (50) can be introduced through an external air inlet (not shown) formed in the seating unit (10) or belt unit (20).

[0063] In other words, the suction passage (53) of the air pump section (50) can be configured to communicate with external air, and for this purpose, an external air inlet is formed on at least one side of the seating section (10) or belt section (20) of the hip seat so that external air can be introduced.

[0064] In one embodiment, the external air inlet may be formed in any one or more of the following ways. That is, the external air inlet may be formed on at least one of the front, bottom, or side portions of the seating portion (10), or on the outer surface (opposite to the waist) of the belt portion (20), or a structure in which external air is introduced through a mesh material or a breathable fabric, or a structure in which an intake passage (53) extends along the inside of the belt portion and communicates with the pump chamber (52).

[0065] In addition, the above-mentioned external air inlet may be configured to include at least one of a micro air hole, a porous filter member, a breathable membrane, and a mesh structure. Accordingly, it is configured to selectively draw in only external air while blocking foreign substances, dust, and water ingress.

[0066] Additionally, the outside air inlet may be further equipped with a simple check structure or a barrier to prevent backflow, but the present invention is not limited thereto.

[0067] The valve part (60) of the present invention is an air discharge means for selectively discharging air stored in the internal space (31) of the airbag (30) to the outside, and is configured to actively adjust the fit of the hip seat by maintaining or releasing the air injected by the air pump part (50).

[0068] As shown in FIGS. 4, 5a and 5b, the valve portion (60) is formed on one side of the airbag (30) and is positioned at a location corresponding to the air hole portion (70) formed on one side of the front of the seating portion (10).

[0069] In a preferred embodiment, the valve portion (60) is configured to include an opening (61) formed in the airbag (30) with the upper and lower ends open, a discharge valve (62) inserted and positioned inside the opening (61) and capable of being pressed, and a spring member (63) that elastically restores the discharge valve (62) to a closed position.

[0070] Accordingly, the valve part (60) maintains the internal space (31) of the airbag (30) in a sealed state when there is no external operation, and is selectively opened by intentional operation by the user.

[0071] The above discharge valve (62) is inserted and positioned inside the opening (61), with its lower portion protruding toward the internal space (31) of the airbag (30).

[0072] The above discharge valve (62) may be formed in a cylindrical, disc-shaped, or plunger shape, and the upper part is exposed to the outside of the seating portion (10) so that it can be pressed from the outside, or is positioned so that it can be operated through the air hole portion (70).

[0073] A sealing member (64) is provided at the lower end of the discharge valve (62) so as to tightly close the lower part of the opening (61) when the discharge valve (62) is in a sealed position.

[0074] This sealing member (64) is formed of a rubber, silicone, or elastic resin material and stably maintains airtightness between the internal space (31) of the airbag (30) and the outside.

[0075] The above spring member (63) is configured to elastically support the discharge valve (62) in a sealed position. That is, when the discharge valve (62) is not pressed from the outside, the discharge valve (62) is pushed upward by the elastic force of the spring member (63), and the sealing member (64) closes the lower part of the opening (61), thereby maintaining the internal space (31) of the airbag (30) in a sealed state.

[0076] On the other hand, when the user presses the discharge valve (62) from the outside, the discharge valve (62) moves downward while overcoming the elastic force of the spring member (63), and accordingly, the lower part of the opening (61) is opened so that the internal space (31) of the airbag (30) communicates with the outside.

[0077] When the pressing operation is released, the discharge valve (62) automatically returns to its original position by the restoring force of the spring member (63) and closes the opening (61) again. That is, when the discharge valve (62) is pressed and the opening (61) is opened, the air stored in the internal space (31) of the airbag (30) is discharged through the path of airbag internal space (31) → opening (61) → air hole (70) → outside.

[0078] At this time, the air stored in the air band member (40), which is connected to the air bag (30) through the air passage (80), is also discharged together or backflowed due to the pressure difference, causing the air band member (40) to contract. That is, the valve part (60) functions as an air release switch that simultaneously controls the amount of air in the air band member (40) as well as the air bag (30).

[0079] As described above, the air pump unit (50) of the present invention performs only the function of injecting air into the internal space (31) of the airbag (30) in one direction, whereas the valve unit (60) performs only the function of selectively discharging the air stored in the internal space (31) of the airbag (30).

[0080] Accordingly, the air injected by the air pump unit (50) is maintained as long as the valve unit (60) is not opened, and the air pressure of the airbag (30) and air band member (40) is reduced only when the user operates the valve unit (60).

[0081] This functional division structure prevents unintended changes in air pressure or leakage during wear, thereby improving the wearing stability of the hip seat.

[0082] According to the valve part (60) of the present invention, air pressure can be quickly released with just a simple pressing operation even while wearing a hip seat, and the pressurized state of the airbag (30) and the air band member (40) can be controlled simultaneously, and airtightness is stably maintained through an automatic return structure by a spring member (63), and unnecessary air leakage or pressure drop during wearing can be prevented.

[0083] In this specification, the term “pressing operation” means an act of operation in which a user applies physical force from the outside using fingers or a palm, etc., to move a specific member downward or inward.

[0084] More specifically, the pressing operation regarding the valve part (60) means an operation in which the discharge valve (62) is moved to move away from the sealed position while overcoming the elastic force of the spring member (63) by the action of the user pressing the outer exposed part of the discharge valve (62) or the outer area of ​​the corresponding seating part (10) from the outside.

[0085] Accordingly, the pressing operation in this specification does not include simple contact or accidental pressure, but refers to an operation that switches the valve part (60) to an operating state by applying an intentional external force.

[0086] In this specification, “sealed position” means a state in which the discharge valve (62) of the valve part (60) is maintained by the elastic force of the spring member (63), and the sealing member (64) of the discharge valve (62) closes the lower part of the opening (61) formed in the airbag (30) so that air communication between the internal space (31) of the airbag (30) and the outside is blocked.

[0087] That is, the sealed position refers to the default position in which the valve part (60) is automatically maintained so that the air inside the airbag (30) does not leak to the outside in a normal state where no pressing operation is applied to the discharge valve (62).

[0088] That is, in the present specification, when the discharge valve (62) is in a closed position, the lower part of the opening (61) is closed and the internal space (31) of the airbag (30) is kept in a closed state, and when the discharge valve (62) is removed from the closed position by a pressing operation, the lower part of the opening (61) is opened and the internal space (31) of the airbag (30) becomes open and communicates with the outside.

[0089] In this way, the sealed position in the present invention refers to the reference position of the discharge valve (62), and the pressing operation refers to a state switching operation that moves the discharge valve (62) from the reference position to enable air discharge.

[0090] The above air passage (80) is an air transmission path that communicates the internal space (31) of the airbag (30) and the air band member (40) disposed inside the belt portion (20), and performs the function of controlling waist pressure by transmitting changes in air pressure of the airbag (30) to the air band member (40).

[0091] That is, the air passage (80) is a key component that functionally separates the airbag (30) into an air pressure generating source and the air band member (40) into a pressurizing execution unit.

[0092] As shown in FIGS. 2 and 6, the air passage (80) of the present invention is formed to extend from the interior of the seating portion (10) into the interior of the belt portion (20) and is arranged to directly or indirectly connect the airbag (30) and the air band member (40).

[0093] In one embodiment, the air passage (80) may be formed along the internal space of the seating portion (10), penetrate the joint area between the seating portion (10) and the belt portion (20), or extend longitudinally along the interior of the belt portion (20), and the present invention is not limited to a specific arrangement type.

[0094] The above air passage (80) can be implemented in at least one form among a tubular hose, a soft or semi-soft pipe, a conduit integrally formed in the seating portion (10) or belt portion (20), and a conduit structure composed of a plurality of connecting members so as to enable air transmission without leakage.

[0095] The air passage (80) is formed with a hollow interior to allow airflow and is configured to have appropriate durability and flexibility so as not to be easily crushed by external pressure or the movement of the wearer.

[0096] The above air passage (80) is connected to the airbag (30) through a connection connector (81). The connection connector (81) is a component for maintaining a hermetic connection between the air passage (80) and the airbag (30), and is a connector of a known structure that can be implemented in an insertable, screw-type, one-touch type, or clamp-fixing type, and a connection tube (32) formed on one side of the airbag (30) is connected to this connection connector (81) so that the airbag (30) can communicate with the air passage (80).

[0097] Accordingly, the air passage (80) can be separated from and combined with the airbag (30), or can be fixed as a single unit during the assembly process, and the efficiency of maintenance and manufacturing processes is improved.

[0098] The air flow through the above air passage (80) is as follows.

[0099] When air is injected into the internal space (31) of the airbag (30) by the compression operation of the air pump unit (50), the internal pressure of the airbag (30) increases, and this pressure is transmitted to the air band member (40) along the air passage (80), and as the air band member (40) expands, the degree of waist pressure of the belt unit (20) increases.

[0100] Conversely, when air in the internal space (31) of the airbag (30) is discharged by the pressing operation of the valve part (60), air inside the air band member (40) is also discharged or backflowed through the air passage (80), causing the air band member (40) to contract. That is, the air passage (80) functions as a bidirectional air delivery path to synchronize the expansion and contraction of the airbag (30) and the air band member (40).

[0101] The above air passage (80) may be equipped with an air delivery delay section (90), and in this case, the air passage (80) may be divided into an inlet air passage (80A) and an outlet air passage (80B).

[0102] That is, the inlet air passage (80A) is connected to the airbag (30) side, and the outlet air passage (80B) is connected to the air band member (40) side.

[0103] The air transfer delay unit (90) of the present invention blocks communication between the inlet air passage (80A) and the outlet air passage (80B) until the air pressure of the airbag (30) reaches a preset critical pressure value, thereby allowing the airbag (30) to inflate preferentially.

[0104] Afterwards, when the air pressure of the airbag (30) exceeds a critical pressure value, the blocking member (92) of the air transfer delay member (90) moves so that the inlet air passage (80A) and the outlet air passage (80B) are connected, and air is transferred to the air band member (40).

[0105] The above air passage (80) is formed with a hermetic structure so that no air leakage occurs while communicating with the airbag (30) and the air band member (40).

[0106] To this end, a sealing member (O-ring, gasket, etc.) may be provided at the connection portion of the air passage (80), and internal pressure and bending characteristics are ensured so that the air passage is maintained even under external pressure or repeated bending. In addition, the air passage (80) is positioned so as not to come into direct contact with the wearer's skin, thereby preventing foreign body sensation or safety issues during use.

[0107] In the present invention, the air delivery delay unit (90) is configured to control the timing of air delivery from the airbag (30) to the air band member (40), and functions as an “air delivery timing control valve (delay valve)” that delivers air to the air band member (40) only after the airbag (30) is preferentially inflated and the support stability of the seating unit (10) is secured, thereby increasing the waist pressure of the belt unit (20).

[0108] That is, the air transmission delay unit (90) divides the air passage (80) into an inlet air passage (80A) and an outlet air passage (80B), and blocks the connection between both passages (80A, 80B) until the pressure on the airbag (30) side reaches a specific value (critical pressure value), thereby allowing air to accumulate inside the airbag (30) first.

[0109] As illustrated in FIGS. 7a and 7b, the air transmission delay member (90) has a blocking member (92) and an elastic support (93) disposed inside a housing (91), a cut portion (94) is formed in the blocking member (92), and a pressure chamber (95) communicating with an inlet air passage (80A) is formed on the upper side of the blocking member (92).

[0110] The above housing (91) is a body that forms the outer shape of the air transmission delay part (90) and provides a movement space (guide space) that extends in the vertical direction (up and down direction) inside.

[0111] An inlet air passage (80A) is connected to one side of the housing (91), and an outlet air passage (80B) is connected to the other side, so that air can be introduced and discharged.

[0112] The housing (91) may be made of resin injection molding, metal, or composite material, and may include a sealing part (e.g., O-ring, gasket, sealing lip) if necessary to prevent internal leakage, but the present invention is not limited thereto.

[0113] The above blocking member (92) is a movable member positioned to be movable up and down inside the housing (91), and is positioned in a basic state to block the exit cross-section of the inlet air passage (80A), thereby blocking the transfer of air from the inlet air passage (80A) to the outlet air passage (80B).

[0114] The blocking member (92) may be formed, for example, in a disc shape, a slider shape, or a plunger shape, and its outer surface may be formed in a shape that allows it to slide along the inner wall of the housing (91). At this time, structures such as guide ribs, guide grooves, and guide pins may be further included to ensure the movement stability of the blocking member (92).

[0115] The above elastic support (93) is an elastic member positioned below the blocking member (92) to elastically support the blocking member (92) upward (blocking direction), and can be implemented as a coil spring, a plate spring, an elastic block, etc., and its elastic force is set to correspond to a critical pressure value.

[0116] That is, the elastic support (93) acts as a “threshold” that maintains the blocking member (92) in a blocked position during the section where the air pressure on the airbag (30) side is low, and allows the blocking member (92) to move downward when the air pressure on the airbag (30) side rises sufficiently to reach a certain pressure (critical pressure value).

[0117] The above-mentioned cut portion (94) is an opening (passage) formed in the blocking member (92), and determines whether the inlet air passage (80A) and the outlet air passage (80B) are connected according to the up-and-down movement of the blocking member (92).

[0118] The cut portion (94) can be formed, for example, as a slot penetrating the side of the blocking member (92), a through hole formed inside the blocking member (92), or a combined form of a side and an internal air passage, and is characterized in that the cross-sectional positions of the inlet air passage (80A) and the outlet air passage (80B) are designed to overlap and communicate through the cut portion (94) only at a specific location of the blocking member (92) (see FIG. 7a, 7b).

[0119] The pressure chamber (95) is a space formed on the upper side of the blocking member (92) and is connected to the inlet air passage (80A) so that the air pressure transmitted through the inlet air passage (80A) acts on the upper surface (effective area) of the blocking member (92).

[0120] Due to the configuration of the pressure chamber (95), the increase in pressure in the inlet air passage (80A) does not simply mean an increase in air flow, but is converted into a force (pressure × area) that pushes the blocking member (92) downward, thereby inducing a state change when a critical pressure value is reached.

[0121] The air transmission delay unit (90) of the present invention is a means for implementing a structure of “blocking before reaching a critical pressure value and connecting after reaching it,” and is described step-by-step as follows.

[0122] - Initial / Low Pressure Section: Air Transfer Blocked State (Fig. 7a)

[0123] When the user repeatedly compresses the air pump unit (50) to inject air into the internal space (31) of the airbag (30), air pressure is also transmitted to the inlet air passage (80A).

[0124] However, at this time, if the air pressure of the inlet air passage (80A) is less than the critical pressure value, the blocking member (92) is maintained in an upward position (blocking position) by the elastic force of the elastic support (93).

[0125] Therefore, the cut section (94) does not overlap with the cross-sectional position of the outflow side air passage (80B), and air cannot pass from the inflow side air passage (80A) to the outflow side air passage (80B).

[0126] As a result, the air injected by pumping is primarily accumulated inside the airbag (30), causing the airbag (30) to inflate first, and the support force of the seat portion (10) is primarily secured.

[0127] In other words, the effect of “seat support (airbag inflation) priority” occurs.

[0128] - Reaching critical pressure value: State transition condition

[0129] As pumping is repeated, the internal pressure of the airbag (30) increases, and the pressure of the inlet air passage (80A) and the pressure chamber (95) also increases.

[0130] The air pressure formed in the pressure chamber (95) acts on the upper effective area of ​​the blocking member (92) to generate a downward force (driving force), and the moment when this downward force overcomes the upward elastic force (restoring force) of the elastic support (93) corresponds to the “critical pressure value.”

[0131] In other words, the critical pressure value can be explained by the following conditions.

[0132] (Pressure of pressure chamber) × (Effective upper surface area of ​​blocking member) ≥ (Restoring force of elastic support + Friction / resistance force)

[0133] Here, the friction / resistance force may include sliding resistance between the blocking member (92) and the housing (91), resistance when there is a sealing part, etc.

[0134] - High-pressure section: Air transfer chimney condition (Fig. 7b)

[0135] When the pressure of the inlet air passage (80A) exceeds the critical pressure value, the blocking member (92) moves downward while compressing the elastic support (93) by the force acting in the pressure chamber (95).

[0136] When the blocking member (92) moves downward by a certain stroke, the position of the cut portion (94) overlaps with the cross-sectional position of the inlet air passage (80A) and the outlet air passage (80B), and at this time, the inlet air passage (80A) and the outlet air passage (80B) are connected through the cut portion (94) (Fig. 7b).

[0137] Accordingly, the air pressure on the airbag (30) side is transmitted to the air band member (40) through the outflow side air passage (80B), causing the air band member (40) to expand and increasing the waist pressure of the belt part (20).

[0138] In this specification, “critical pressure value” refers to a reference pressure at which the air transmission delay part (90) maintains a blocked state (Fig. 7a) and then switches to a connected state (Fig. 7b). When the air pressure in the inlet air passage (80A) and the pressure chamber (95) exceeds the specified value, the blocking member (92) moves downward and the cut part (94) moves to a connected position.

[0139] - Design parameters determining the critical pressure value

[0140] The above critical pressure value can be determined or controlled by the following factors.

[0141] 1) Elastic force of the elastic support (93) (spring constant k and initial tension):

[0142] If the spring constant is large or the initial tension is large, the critical pressure value increases. Conversely, if the spring constant is small or the initial tension is small, the critical pressure value decreases.

[0143] 2) Effective upper surface area (A) of the blocking member (92):

[0144] The larger the effective area of ​​the pressure chamber (95), the greater the force generated at the same pressure, so the critical pressure value can be lowered. The smaller the effective area, the higher the critical pressure value can be.

[0145] 3) Moving stroke for communication [position design structure of the incision (94)] :

[0146] If the amount of movement required for the incision (94) to overlap with the cross-section of the Euro is large, greater pressure (or more energy) may be required.

[0147] 4) Friction / Sealing Resistance and Fluid Resistance :

[0148] The resistance force can be adjusted according to the interlocking tolerance of the housing (91) and the blocking member (92), the presence or absence of a sealing structure, etc., so that the critical pressure value can be corrected.

[0149] The critical pressure value in the present invention can be set, for example, to a pressure range in which the airbag (30) is sufficiently inflated into a target shape inside the seating portion (10) to ensure seating stability.

[0150] That is, the elasticity of the elastic support (93) and the effective area of ​​the blocking member (92) can be designed so that “the airbag is fully inflated first” and then “waist compression (airband inflation)” begins.

[0151] According to the above air delivery delay unit (90), the airbag (30) inflates first to secure the support stability of the seating unit (10), and then when a critical pressure value is reached, the air band member (40) inflates to increase the waist pressure, so the user can adjust the wearing comfort in a stable and predictable sequence even while wearing it.

[0152] In addition, compared to a structure where the airbag (30) and the air band member (40) simply inflate simultaneously, the problem of the waist being excessively constricted without sufficient support and the problem of the infant's weight being abnormally distributed due to poor seating stability can be reduced, thereby improving overall safety and convenience.

[0153] In the present invention, the implementation of the air transmission delay unit (90) is not limited to the above embodiment, and various modifications are possible within the scope of achieving the same delay function based on the critical pressure value. For example, it is possible to configure the elastic support body (93) as an elastic body instead of a coil spring, change the effective area of ​​the blocking member (92) or the shape of the pressure chamber (95), or form multiple cut sections (94) to enable stepwise (multi-stage) communication.

[0154] In the present invention, the statement “the elastic force of the elastic support (93) is set to correspond to a critical pressure value” means that the restoring force (upward force) of the elastic support (93) is designed and adjusted so that the blocking member (92) moves downward and the cut portion (94) is converted to a communication position only when the air pressure of the inlet air passage (80A) and the pressure chamber (95) reaches a specific value (critical pressure value).

[0155] That is, the elastic support (93) provides a force in the direction of pushing the blocking member (92) upward (blocking position), and the pressure chamber (95) provides a force in the direction of pushing the blocking member (92) downward (communication direction), and the relationship between the magnitudes of these two forces determines the state transition at the critical pressure value.

[0156] Accordingly, the elasticity of the elastic support (93) is set by a spring constant, preload, and movement stroke, etc., such that the point at which the downward force (pressure × effective area) of the pressure chamber (95) acting on the blocking member (92) overcomes the elasticity becomes a critical pressure value.

[0157] The term “overlapping” as used in the detailed description of the present invention means that two or more openings, cross-sections, or flow paths are placed in a spatially corresponding positional relationship to form a communication state in which air can flow, and does not mean merely an external overlap or visual overlap.

[0158] That is, in the present invention, “overlapping” means a positional relationship in which the position of the cut portion (94) formed in the blocking member (92) changes according to the movement of the blocking member (92), and the cross-sectional position of the inlet air passage (80A) and the cross-sectional position of the outlet air passage (80B) correspond spatially, so that the inlet air passage (80A) and the outlet air passage (80B) can communicate with each other through the cut portion (94), and means “a positional coincidence or alignment state in which air flow is actually possible.”

[0159] To explain in more detail, in a non-overlapping state (blocked state), the cut portion (94) is misaligned with the cross-sectional position of the inlet air passage (80A) and the outlet air passage (80B), so that air entering the inlet air passage (80A) cannot move to the outlet air passage (80B).

[0160] In the overlapping state (connected state), at least a portion of the cut section (94) is positioned so as to simultaneously correspond to the cross-section of the inlet air passage (80A) and the cross-section of the outlet air passage (80B), thereby forming an air flow path between the inlet air passage (80A) and the outlet air passage (80B) through the cut section (94). Accordingly, whether there is overlap is determined based on the actual possibility of air flow.

[0161] In this specification, “overlap” includes not only complete overlap where the cut portion (94) completely covers the cross-sections of the inlet air passage (80A) and the outlet air passage (80B), but also partial overlap where only a portion of the cut portion (94) corresponds to the cross-sections, allowing for air flow.

[0162] In other words, if cross-sectional overlap is achieved to the extent that air transfer is possible, it corresponds to “overlap” in the present invention, regardless of the degree or area.

[0163] Accordingly, in the present invention, “superimposition” means a positional relationship in which the cut portion spatially corresponds to the cross-sectional position of the air passage so that a communication state in which air can actually flow is formed.

[0164] According to a preferred embodiment of the present invention, the interlocking of the airbag (30), air band member (40), and air transmission delay member (90) and the waist pressure mechanism of the hip seat can be described as follows.

[0165] When air accumulates in the internal space (31) of the airbag (30) by repeated compression of the air pump unit (50), the air delivery delay unit (90) blocks the connection between the inlet air passage (80A) and the outlet air passage (80B) when the pressure is below a critical pressure value, thereby allowing the airbag (30) to inflate preferentially. When the air pressure of the airbag (30) reaches a critical pressure value or higher, the blocking member (92) moves so that the cut portion (94) overlaps with the cross-sectional position of both air passages, thereby connecting the inlet air passage (80A) and the outlet air passage (80B) and allowing air to be delivered to the air band member (40).

[0166] Accordingly, the air band member (40) expands toward the inner side of the belt part (20) to increase waist pressure, and the air pressure of the airbag (30) and the air band member (40) is synchronously reduced by the opening of the valve part (60) so that the waist pressure is released.

[0167] In addition, in the present invention, when the air band member (40) expands, the inner surface of the belt portion (20) protrudes toward the guardian's waist and uniformly presses the waist circumference.

[0168] As a result, unlike the conventional structure in which the belt portion (20) is fixed simply by adjusting the belt length, a uniform and tight pressure is formed across the entire waist circumference.

[0169] In addition, since the air band member (40) is housed inside the belt portion (20) and is not exposed to the outside, there is no visual discrepancy and no snagging or interference occurs while wearing.

[0170] The inner surface of the belt portion (20) may be provided with a mesh material or a breathable material. In the present invention, "mesh material or breathable material" refers to a fiber or structure that is applied to the inner surface of the belt portion (20) and allows air circulation in the area that contacts the wearer's waist, while simultaneously improving the wearing comfort. The mesh material or breathable material is configured to provide a comfortable wearing environment even under waist compression without interfering with the expansion and contraction operation of the air band member (40).

[0171] The above mesh material or breathable material is provided over at least a portion or the entire front so as to correspond to the area where the air band member (40) is placed on the inner side of the belt portion (20), that is, the side that comes into direct contact with the guardian's waist when worn.

[0172] At this time, the mesh material or breathable material may be placed as a cover layer covering the air band member (40), or may be placed in a state of being sewn and bonded integrally with the air band member (40).

[0173] The above mesh material may be a known material and is preferably set to have sufficient elasticity so that it deforms together with the air band member (40) when it expands and adheres closely to the waist.

[0174] In this specification, the term “breathable material” means a material that allows air flow through a micropore structure, porous film, moisture-permeable membrane, air-permeable fabric, etc., even if it does not include a mesh structure.

[0175] For example, foamed fabrics containing micropores, porous synthetic resin sheets, laminated structures of breathable and waterproof membranes (e.g., PU membranes) and fabrics, breathable cushion pads, etc., can be used as breathable materials.

[0176] In other words, the breathable material in the present invention does not necessarily have to be a mesh structure, but includes all materials capable of mitigating sweat and heat accumulation by allowing air circulation when worn.

[0177] When the air band member (40) expands, the inner surface of the belt portion (20) protrudes toward the waist, and at this time, the mesh material or breathable material also deforms together with the expansion shape of the air band member (40) so that air flow is smooth even when the air band member (40) expands.

[0178] According to the above mesh material or breathable material, sweat or heat is prevented from accumulating in the waist area even when the hip seat is worn for a long time, and a comfortable fit is maintained even when pressurized by the air band member (40). Explanation of the symbols

[0179] 10: Seating part, 20: Belt part, 30: Airbag, 31: Airbag interior space, 32: Connecting tube 40: Air band absence, 50: Air pump section, 51: Compression section, 60: Valve section, 61: Opening section, 62: Discharge valve, 63: Spring member, 64: Sealing member 70: Air hole section, 80: Air passage, 80A: Inlet air passage, 80B: Outlet air passage, 81: Connection connector, 90: Air transmission delay part, 91: Housing, 92: Blocking member, 93: Elastic support, 94: Incision, 95: Pressure chamber.

Claims

Claim 1 A hip seat comprising a seating portion (10) capable of seating an infant, and belt portions (20) provided on both sides of the seating portion (10) so as to be worn on the waist area of ​​a guardian, wherein an airbag (30) that expands or contracts according to the injection or discharge of air is provided inside the seating portion (10), and an air band member (40) that is connected to the airbag (30) through an air passage (80) and expands by air supplied from the airbag (30) or contracts when the air from the airbag (30) is discharged is provided on one side inside the belt portion (20), and wherein the airbag (30) is provided with an air pump portion (50) configured to inject air in one direction into the internal space (31) of the airbag (30) by a compression operation, and a valve portion (60) for selectively discharging air from the internal space (31) of the airbag (30) to the outside, and the front portion of the seating portion (10). An air hole portion (70) is formed on one side and corresponding to the valve portion (60) to communicate the internal space of the seating portion (10) with the outside. The valve portion (60) includes an opening (61) formed in the airbag (30) with the upper and lower ends open, a discharge valve (62) positioned inside the opening (61) to allow for pressing operation when pressed from the outside, and a spring member (63) that elastically restores the discharge valve (62) to a closed position. When the discharge valve (62) is not pressed, the lower part of the opening (61) is closed by the elastic force of the spring member (63). When the discharge valve (62) is pressed by a pressing operation, the lower part of the opening (61) is opened so that air in the internal space (31) of the airbag (30) is discharged to the outside through the opening (61). A guardian wearing a hip seat In this state, as the air pump unit (50) is repeatedly compressed, the airbag (30) expands, and in conjunction with this, air is supplied from the airbag (30) through the air passage (80), and the air band member (40) expands together, thereby increasing the degree of waist pressure of the belt unit (20).The air of the airbag (30) and the air band member (40) is discharged by the pressing operation of the discharge valve (62), thereby reducing the degree of waist pressure of the belt portion (20), and the air passage (80) is provided with an air transmission delay member (90) that controls the flow of air transmitted from the airbag (30) to the air band member (40). The air transmission delay member (90) comprises a blocking member (92) that is positioned to be movable in the vertical direction inside the housing (91) and blocks the exit cross-section of the inlet air passage (80A), an elastic support member (93) that is positioned below the blocking member (92) and elastically supports the blocking member (92) so that the blocking member (92) can move in the vertical direction, and an inlet side formed on the blocking member (92) whose vertical position changes according to the movement of the blocking member (92). It includes an incision (94) that selectively connects the air passage (80A) and the outflow side air passage (80B), and a pressure chamber (95) is formed on the upper side of the blocking member (92) that communicates with the inflow side air passage (80A), so that the air pressure transmitted through the inflow side air passage (80A) acts on the upper surface of the blocking member (92), thereby causing the blocking member (92) to move downward. The air transmission delay member (90) blocks the transmission of air to the outflow side air passage (80B) until a preset threshold pressure value is reached, even if the air pressure of the airbag (30) increases, so that the airbag (30) inflates preferentially. When the air pressure of the airbag (30) reaches above the threshold pressure value and the position of the incision (94) that has moved downward by the blocking member (92) overlaps with the cross-sectional position of the inflow side air passage (80B), the A hip seat with adjustable fit, in which an airbag and an airband member are linked, characterized in that the inlet air passage (80A) and the outlet air passage (80B) are connected through a cut portion (94) so ​​that air is transmitted to the airband member (40), and the elastic force of the elastic support (93) is set to correspond to the critical pressure value. Claim 2 In claim 1, the discharge valve (62) is inserted and positioned inside the opening (61) such that its lower portion protrudes into the internal space (31) of the airbag (30) and is elastically supported by the spring member (63), thereby compressing the spring member (63) when pressed and connecting the internal space (31) of the airbag (30) and the opening (61), and when released, it automatically returns to its original position by the elastic force of the spring member (63) to close the lower portion of the opening (61) and seal the internal space (31) of the airbag (30). A sealing member (64) is provided at the lower end of the discharge valve (62) to securely close the lower portion of the opening (61) and maintain the sealed state of the internal space (31) of the airbag (30), and the airbag (30) and the air passage (80) are connected through a connecting connector (81). A hip seat with adjustable fit, characterized in that the inner surface of the belt portion (20) is provided with a mesh material or a breathable material, and the airbag and air band members are linked. Claim 3 delete Claim 4 A hip seat with adjustable fit that is linked with an airbag and air band member, characterized in that, in claim 1 or 2, the air pump part (50) comprises a dome-shaped compression part (51) that is deformed when pressed from the outside, a pump chamber (52) formed on the inside of the compression part (51), an intake passage (53) which is a passage for external air to flow into the pump chamber (52), a discharge passage (54) which is a passage for air to be discharged from the pump chamber (52) to the internal space (31) of the airbag (30), a first one-way valve (55) disposed in the intake passage (53) which allows only the inflow of external air, and a second one-way valve (56) disposed in the discharge passage (54) which allows only the flow of air toward the airbag (30).

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