Inflation and deflation control device and inflatable mattress

Abstract

The utility model provides an inflation and deflation control device which comprises a base body provided with an inner cavity allowing the interior of an inflation object to be communicated with the outside. The cap can be connected to the base body in a rotating operation manner; the check valve comprises a valve seat and a valve clack attached to the valve seat, an air inflation channel is formed in the valve seat, and the valve clack is configured to allow air flow to be inflated into the air inflation object through the air inflation channel but limit the air flow to be discharged to the outside through the air inflation channel; the check valve is configured to be capable of moving between a first position and a second position, the valve seat and the base body are configured to be in sealed connection at the first position, the valve seat and the base body are configured to be separated at an interval at the second position so that a deflation channel can be formed between the valve seat and the base body, and airflow in the inflation object is exhausted to the outside through the deflation channel. The inflation and deflation of the inflation object can be freely controlled, and the operation is simple and convenient. The utility model further provides an inflatable mattress which comprises a mattress body and the inflation and deflation control device.

Description

Technical Field

[0001] The utility model relates to the technical field of inflation and deflation control devices, in particular to an inflation and deflation control device and an inflatable mattress. Background Art

[0002] A general automatic inflatable cushion is a closed soft container with a foam elastic material and an air nozzle at the opening of the soft container. When the automatic inflatable cushion is curled and folded, the air in the container can be squeezed out from the opening, and the air nozzle is then used in a closed state to prevent air from entering the container, so that the inflatable cushion is maintained in a squeezed state and is easy to store. When the air nozzle is opened to allow air to circulate, the foam elastic material uses its elastic recovery properties to expand the inflatable cushion, and the air nozzle is then used in a closed state to keep the inflatable cushion in an inflated state for use.

[0003] There are many types of existing air nozzle designs. For example, the Chinese utility model with patent number CN210943014U discloses a diamond-shaped air nozzle structure. However, the twist valve in the patent can only achieve such inflation / deflation by twisting the vent cap clockwise and counterclockwise, and it is easy to accidentally touch the rotating air nozzle cover during use, causing gas leakage inside the inflatable object; and during the inflation process, if there is gas inside the inflatable object, the gas will flow directly to the outside, causing inconvenience to inflation. In view of this, it is necessary to propose a new structure of inflation and deflation control device to solve the above problems. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model provides an inflation and deflation control device, which controls the check valve to move between a first position and a second position by rotating the cap, thereby freely controlling the inflation and deflation of the inflatable object, avoiding direct leakage of the gas inside the inflatable object, and is simple and convenient to operate.

[0005] The utility model also provides an inflatable mattress, comprising a mattress body and the above-mentioned inflation and deflation control device, so that the inflation and deflation state of the mattress body is simpler and more convenient, and the use effect is good.

[0006] The utility model adopts the following technical solutions:

[0007] On the one hand, the utility model provides an inflation and deflation control device for controlling the inflation and deflation of an inflatable object, comprising: a base having an inner cavity allowing the interior of the inflatable object to communicate with the outside world; a cap that can be rotatably connected to the base; and a check valve, comprising a valve seat and a valve flap attached to the valve seat, an inflation channel being formed on the valve seat, the valve flap being configured to allow air flow to be filled into the interior of the inflatable object through the inflation channel, but to restrict air flow from being discharged to the outside world through the inflation channel; the check valve is configured to be movable between a first position and a second position, the valve seat and the base being configured to be sealed and connected at the first position, and the valve seat and the base being configured to be spaced and separated at the second position to form a deflation channel therebetween, and the air flow in the inflatable object is discharged to the outside world through the deflation channel.

[0008] The outer wall of the base has a first guide portion and a second guide portion, the first guide portion is suitable for guiding the cap to rotate within a first angle range, and the second guide portion is suitable for guiding the cap to rotate within a second angle range; the cap is connected to the check valve via a driving mechanism, and the driving mechanism is configured as follows: when the cap rotates within the second angle range, the driving mechanism and the check valve are dynamically coupled so that the check valve moves from the first position to the second position; when the cap rotates within the first angle range, the driving mechanism and the check valve are dynamically decoupled so that the check valve is maintained at the first position.

[0009] The above technical solution can be further improved as follows:

[0010] Furthermore, the first guide portion is configured as a spiral groove circumferentially arranged along the outer wall of the base, and the cap has a sliding block adapted to the spiral groove.

[0011] Further, the second guide portion is configured as an annular groove arranged along the circumference of the base, and the annular groove is suitable for guiding the sliding block to slide in the circumference of the base.

[0012] Furthermore, a transition groove connecting the first guide portion and the second guide portion is provided between the two, and a stop portion is provided in the transition groove, and the stop portion is configured to prevent the slider from entering the second guide portion from the transition groove when no pulling force is applied to the cap along the axial direction of the cap.

[0013] Further, the driving mechanism includes a driving rod, which is configured to move in response to the operation of the cap; and a power transmission unit, which is suitable for associating the driving rod and the check valve to transmit the driving force of the driving rod to the check valve; wherein, when the driving rod rotates within a second angle range, the power transmission unit and the check valve are dynamically coupled so that the check valve moves from the first position to the second position; when the driving rod rotates within a first angle range, the power transmission unit and the check valve are dynamically decoupled so that the check valve is maintained at the first position.

[0014] Preferably, the driving rod comprises: a sealing portion, which is suitable for forming a sealing connection with the inner cavity wall; and a driving portion, which is suitable for driving the power transfer unit to rotate; wherein the sealing portion is configured to gradually separate from the base during the rotation of the cap along the first guide portion to form an air charging and discharging channel therebetween.

[0015] Furthermore, the power transmission unit includes a pair of upper driving members and lower driving members that cooperate with each other, the upper driving member is coupled to the driving rod, and the lower driving member is suitable for driving the check valve to move from the first position to the second position.

[0016] Furthermore, the protrusion structure includes a pair of lower protrusions formed at the bottom of the upper driving member; and a pair of upper protrusions formed at the top of the lower driving member; wherein the pair of upper protrusions and the pair of lower protrusions are staggered with each other.

[0017] Furthermore, a first limiting structure is arranged between the upper driving member and the base, and the first limiting structure is configured to allow the upper driving member to rotate following the driving rod, but to limit its movement along the axial direction.

[0018] Furthermore, an actuating portion arranged obliquely downward is formed at the bottom of the lower driving member, and the upper end of the valve seat has an abutment protrusion adapted to the actuating portion; when the lower driving member is driven to rotate, the actuating portion cooperates with the abutment protrusion to drive the valve seat to move from the first position to the second position.

[0019] Furthermore, it also includes a bottom cylinder attached to the bottom of the base, and a second limiting structure is arranged between the check valve and the bottom cylinder, and the second limiting structure is configured to allow the check valve to move along its axial direction but limit its rotation.

[0020] Furthermore, a return spring is arranged between the bottom tube and the check valve, and the return spring is arranged to apply force to the check valve in a direction in which the check valve moves from the second position to the first position.

[0021] Furthermore, it also includes a valve sleeve, and the base is fixed to the valve sleeve.

[0022] On the other hand, the utility model further provides an inflatable mattress, comprising a mattress body and an air nozzle attached to the mattress body, wherein the air nozzle is configured as the aforementioned inflation and deflation control device.

[0023] By adopting the above technical solution, the utility model has the following technical effects:

[0024] The utility model discloses an integrated inflation and deflation control valve, which is used for inflating and deflation of an inflatable object, and comprises a base, a cap and a check valve, wherein the cap is connected to the check valve through a driving mechanism, so that the check valve can move between a first position and a second position, thereby controlling the inflation or deflation of the inflatable object, and in an inflated state, the check valve can be maintained at the first position to form a sealed connection, and is configured to allow airflow to be inflated into the inflatable object through an inflation channel, but to restrict airflow from being discharged to the outside through the inflation channel, so as to avoid deflation in an inflated state and reduce the risk of accidental operation. In addition, the side wall of the base body is also provided with a first guide portion and a second guide portion for guiding the rotation of the cap, so that the cap can be rotated accurately to ensure the accuracy of the operation, and a stop portion is also provided between the first guide portion and the second guide portion, so as to reduce the user's misoperation and enable the user to accurately control the inflation and deflation of the inflatable object; and after the inflation is completed, the cap can also be screwed on the base body to ensure the air tightness inside the inflatable object and avoid air leakage; the entire operation process only requires rotating the cap to realize the switching of the inflation and deflation states, which is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a cross-sectional view of the utility model.

[0028] Figure 3 It is a cross-sectional view of the utility model in an inflated state.

[0029] Figure 4 It is a cross-sectional view of the utility model in a deflated state.

[0030] Figure 5 It is an explosion schematic diagram of the utility model.

[0031] Figure 6 It is a structural schematic diagram of the cap in the utility model.

[0032] Figure 7 It is a structural schematic diagram of the base body in the utility model.

[0033] Figure 8 It is a bottom-up stereogram of the base body in the utility model.

[0034] Fig. 9 It is a bottom view of the substrate in the utility model.

[0035] Fig.10 It is a structural schematic diagram of a power drive mechanism and a stop valve in the utility model.

[0036] Fig.11 yes Fig.10 Schematic diagram of the decomposition.

[0037] Fig.12 It is a structural schematic diagram of the valve sleeve in the utility model.

[0038] Description of reference numerals: 10-base; 11-inner cavity; 12-step portion; 13-slot; 14-guide block; 15-positioning protrusion; 16-first guide portion; 17-second guide portion; 18-stop portion; 20-cap; 21-air flow inlet; 22-slider; 23-rib plate; 30-driving mechanism; 31-driving rod; 31a-sealing portion; 32-power transmission unit; 321-upper driving member; 321a-through hole; 321b-elastic clamping portion; 321c- Lower protrusion; 322-lower driving member; 322a-upper protrusion; 322b-actuating part; 40-check valve; 41-valve seat; 411-abutting protrusion; 412-limiting slider; 42-valve flap; 5-bottom cylinder; 51-limiting groove; 6-return spring; 7-valve sleeve; 71a-first positioning groove; 71b-second positioning groove; 81-first sealing ring; 82-second sealing ring; 83-third sealing ring; 84-fourth sealing ring; 91-deflation channel; 92-inflation channel. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] Unless otherwise defined, the technical terms or scientific terms used in this patent document shall be the common meanings understood by people with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the utility model patent specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "one" or "the" do not indicate a quantity limit, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0044] like Figures 1 to 12As shown, the utility model provides an inflation and deflation control device for controlling the inflation and deflation of an inflatable object, which comprises: a base 10, a check valve 40 that can slide along the axial direction of the base 10, and a cap 20 that can be rotatably connected to the base 10; wherein the base 10 has an inner cavity 11 that allows the inside of the inflatable object to communicate with the outside; the check valve 40 comprises a valve seat 41 and a valve flap 42 attached to the valve seat 41, and an inflation channel 92 is formed on the valve seat 41, and the valve flap 42 is configured to allow airflow to be filled into the inflatable object through the inflation channel 92, but to restrict airflow from being discharged to the outside through the inflation channel 92. It should be noted that the valve flap 42 is made of a flexible material such as silicone, and is clamped on the bottom of the valve seat 41 to form a sealed connection. The shape of the valve flap 42 is an arched structure. When external airflow enters, the airflow can drive the valve flap 42 to deform to form a gap between the valve flap 42 and the valve seat 41 to form an inflation channel 92, thereby filling the airflow into the inflatable object; when the external airflow stops inflating, the valve flap 42 will abut against the valve seat 41 under the pressure inside the inflatable object to form a seal to prevent the inflatable object from leaking. Preferably, a sealing structure is also formed at the top of the inner cavity 11, thereby forming a double sealing structure with the check valve 40, further ensuring the airtightness inside the inflatable object.

[0045] like Figure 3-Figure 4 As shown, Figure 3 is a cross-sectional view of the inflated state in this embodiment, Figure 4 is a cross-sectional view of the embodiment in the deflated state. The check valve 40 is configured to be movable between a first position and a second position; Figure 3 As shown, the valve seat 41 and the base 10 are sealed and connected at the first position; the airflow can enter the inner cavity 11 through the airflow inlet 21, and then drive the valve flap 42 to undergo elastic deformation so that the airflow is filled into the inflatable object; Figure 4 As shown, the valve seat 41 and the base 10 are configured to be separated at the second position to form a deflation channel 91 therebetween, and the airflow in the inflatable object is discharged to the outside through the deflation channel 91. With the above structural design, even if the cap 20 is rotated to the inflated state, the gas inside the inflatable object will not flow to the outside, thereby ensuring the airtightness inside the inflatable object, while also avoiding the problem of gas leakage caused by the cap 20 being rotated by mistake, and having good practicality.

[0046] like Figure 1-7As shown, the cap 20 is rotatably connected to the base 10, and the top of the cap 20 has at least one airflow inlet 21 connected to the inner cavity 11 of the base 10, so that during the inflation and deflation process, the airflow can flow between the inflatable object and the outside world through the airflow inlet 21; in addition, a first sealing ring 81 is also configured between the cap 20 and the base 10 to ensure the sealing between the two, and to ensure that the airflow in the inflatable object will not flow out in the closed state. The outer wall of the base 10 is constructed with a first guide portion 16 and a second guide portion 17, the first guide portion 16 is suitable for guiding the cap 20 to rotate within a first angle range, and the second guide portion 17 is suitable for guiding the cap 20 to rotate within a second angle range.

[0047] Specifically, the first guide portion 16 is configured as a spiral groove arranged around the outer wall of the base 10, and the cap 20 has a slider 22 adapted to the spiral groove. The spiral groove gradually extends upward along the axial direction of the base 10, thereby guiding the cap 20 to gradually move upward while rotating within a first angle range, so that the cap 20 is separated from the base 10, so that the external airflow can enter the inner cavity 11 through the airflow inlet 21 at the top of the cap 20, and then inflate the inflatable object; the second guide portion 17 is configured as an annular groove arranged along the circumference of the base 10, and the annular groove is suitable for guiding the slider 22 to slide in the circumference of the base 10, thereby guiding the cap 20 to rotate within a second angle range, thereby deflating the inflatable object.

[0048] There is a transition groove connecting the first guide portion 16 and the second guide portion 17. Specifically, the annular groove is located at the tail end of the spiral groove and is connected to the spiral groove, so that the cap 20 can move directly from the inflation position for inflating the inflatable to the deflation position for deflation; of course, in order to facilitate the user to distinguish the operation action, the annular groove is located above the spiral groove. When the user needs to deflate, it is necessary to apply force upward to lift the cap 20 to avoid the user directly reaching the deflation position from the inflation position when operating the cap 20 to rotate, thereby reducing the probability of misoperation; further, a stopper 18 is provided in the transition groove, and the stopper 18 is configured to prevent the slider 22 from entering the second guide portion 17 from the transition groove when the cap 20 is not subjected to a pulling force along the axial direction of the cap 20. In this embodiment, the stopper 18 is configured as a step between the spiral groove and the annular groove, so that when the user needs to deflate, he needs to use a large force to lift the cap 20 upward, so that the slider 22 transitions from the spiral groove to the annular groove, and then the cap 20 can be guided to rotate within the second angle range to achieve the deflation function of the inflatable. Preferably, the two side surfaces of the slider 22 facing the stopper 18 are formed with inclined surfaces, so that the slider 22 can easily cross the stopper 18.

[0049] Preferably, in this embodiment, the inner wall of the cap 20 has three sliders 22 arranged equidistantly along the circumferential direction; the first guide portion 16 and the second guide portion 17 are respectively provided with three sliders to improve the stability of the rotation between the cap 20 and the base 10 and prevent the cap 20 from being separated from the base 10. In order to facilitate the user to rotate the cap 20, the outer surface of the cap 20 has a plurality of strip columns extending in the radial direction to increase the friction force on the surface of the cap 20. Further, as Figure 1 As shown, one side of the outer wall of the cap 20 has a rib 23, and three guide blocks 14 are arranged on the base 10 along the circumferential direction, wherein the angle between the first guide block 14 and the second guide block 14 is the first angle range, and the angle between the second guide block 14 and the third guide block 14 is the second angle range, so that when the user is in use, he can also judge the inflation and deflation state of the control device by the position of the guide block 14 corresponding to the rib 23, thereby improving the convenience of use. It should be noted that the first angle range is 90-120 degrees, and the second angle range is 30-60 degrees; in this embodiment, the first angle is 120 degrees, and the second angle is 30 degrees.

[0050] like Figure 2-Figure 5 As shown, the cap 20 is connected to the check valve 40 via a driving mechanism 30, and the driving mechanism 30 is configured as follows: when the cap 20 rotates within a second angle range, the driving mechanism 30 and the check valve 40 are dynamically coupled so that the check valve 40 moves from the first position to the second position; when the cap 20 rotates within a first angle range, the driving mechanism 30 and the check valve 40 are dynamically decoupled so that the check valve 40 is maintained at the first position.

[0051] The driving mechanism 30 includes: a driving rod 31, which is configured to move in response to the operation of the cap 20; and a power transmission unit 32, which is suitable for associating the driving rod 31 and the check valve 40 to transmit the driving force of the driving rod 31 to the check valve 40; wherein, when the driving rod 31 rotates within the second angle range, the power transmission unit 32 is dynamically coupled with the check valve 40 so that the check valve 40 moves from the first position to the second position; when the driving rod 31 rotates within the first angle range, the power transmission unit 32 is dynamically decoupled with the check valve 40 so that the check valve 40 is maintained at the first position.

[0052] One end of the driving rod 31 is fixed to the cap 20, and the other end thereof is connected to the power transmission unit 32; specifically, the driving rod 31 has a sealing portion 31a and a driving portion, and the driving portion is suitable for driving the power transmission unit 32 to rotate; wherein the sealing portion 31a is configured to form a sealing connection with the wall of the inner cavity 11, and gradually separates from the base 10 during the rotation of the cap 20 along the first guide portion 16, so as to form a charging and discharging channel 91 between the two. Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig.10 and Fig.11 As shown, the sealing portion 31a is formed at the upper end of the driving rod 31, and can be used to seal the top of the inner cavity 11 to prevent the inflatable material from communicating with the external environment, and a second sealing ring 82 is provided between the sealing portion 31a and the inner wall of the inner cavity 11; when the cap 20 rotates within a first angle range, the driving rod 31 will rotate with the cap 20 and move upward, thereby causing the sealing portion 31a to detach from the inner cavity 11, so that the inner cavity 11 is connected to the air flow inlet 21 on the cap 20.

[0053] In this embodiment, the power transmission unit 32 includes a pair of upper driving members 321 and lower driving members 322 that cooperate with each other, the upper driving member 321 is coupled to the driving rod 31, and the lower driving member 322 is suitable for driving the check valve 40 to move from the first position to the second position. Specifically, the upper driving member 321 and the lower driving member 322 realize power disconnection and coupling through a protrusion structure: the protrusion structure includes a pair of lower protrusions 321c formed at the bottom of the upper driving member 321; and a pair of upper protrusions 322a formed at the top of the lower driving member 322; wherein the pair of upper protrusions 322a and the pair of lower protrusions 321c are staggered with each other, so that when the cap 20 drives the driving rod 31 to rotate within a first angle range, at this time, the upper protrusion 322a and the lower protrusion 321c remain in a staggered state, that is, in a power decoupling state, so only the upper driving member 321 rotates with the driving rod 31; when the cap 20 drives the driving rod 31 to rotate within a second angle range, the upper protrusion 322a and the lower protrusion 321c abut against each other, thereby driving the lower driving member 322 to rotate together.

[0054] The driving part of the driving rod 31 cooperates with the upper driving member 321. Specifically, a "plum blossom-shaped" through hole 321a or a "cross-shaped" through hole 321a is formed in the middle of the upper driving member 321, and the driving part of the driving rod 31 is correspondingly provided with a rod shape that is adapted to the shape of the through hole 321a to improve the stability of the connection between the two. The above-mentioned structural design can allow the driving rod 31 to drive the upper driving member 321 to rotate while allowing the driving part to slide up and down along the upper driving member 321.

[0055] In addition, in order to ensure that the upper driving member 321 can be maintained at the set position, a first limiting structure is arranged between the upper driving member 321 and the base 10, and the first limiting structure is configured to allow the upper driving member 321 to rotate with the driving rod 31 and limit its upward and downward movement with the driving rod 31, thereby improving the stability of the rotation of the upper driving member 321. Figure 7-Figure 9 As shown, the first limiting structure includes a step portion 12 formed on the side wall of the inner cavity 11 of the base 10, and the step portion 12 can maintain the axial position of the upper driving member 321 in the inner cavity 11; in addition, the first limiting structure also includes elastic clamping portions 321b arranged on both sides of the first driving rod 31, and the side wall of the inner cavity 11 of the base 10 has a clamping groove 13 adapted to the elastic clamping portion 321b, and the elastic clamping portion 321b and the clamping groove 13 are both conical structures. There are four clamping grooves 13, wherein the angle between one group of adjacent clamping grooves 13 corresponds to the first angle range, and the angle between another group of adjacent clamping grooves 13 corresponds to the second angle range, and the angles between the four clamping grooves 13 are arranged in a cycle in sequence. The above-mentioned structural design increases the resistance to the rotation of the upper driving member 321, thereby avoiding the probability of the cap 20 being misoperated and improving the safety of use.

[0056] An actuating portion 322b is formed at the bottom of the lower driving member 322, and the upper end of the valve seat 41 has an abutting protrusion 411 adapted to the actuating portion 322b. When the lower driving member 322 is rotated in conjunction with the upper driving member 321, the actuating portion 322b will press the valve seat 41 downward through the abutting protrusion 411 to form an air release channel 91, so that the airflow in the inflatable object is discharged to the outside through the air release channel 91; of course, in other embodiments, the positions of the abutting protrusion 411 and the actuating portion 322b can be interchanged, and the utility model is not limited to this.

[0057] Of course, in some embodiments, the driving mechanism 30 can also adopt a screw push block structure, and the driving rod 31 has a smooth portion and a threaded portion. When the cap 20 rotates within a first angle range, the smooth portion rotates in the push block and moves axially upward; when the cap 20 rotates within a second angle range, the threaded portion is connected to the thread in the push block to drive the push block to move downward, thereby pushing the check valve 40 from the first position to the second position for deflation. Of course, it can also be other forms of transmission structures, such as lever structures, cam structures, etc., as long as the power disconnection and coupling are realized. The utility model is not limited to this.

[0058] Furthermore, it also includes a bottom cylinder 5 attached to the bottom of the base 10, and a cavity for limiting the movement of the check valve 40 is defined between the bottom cylinder 5 and the base 10 to ensure the stability of the check valve 40 in being able to move between the first position and the second position. Figure 5 As shown, the base 10 has a snap-in block at the bottom, the bottom tube 5 has a snap-in groove corresponding to the snap-in block at the top, and the bottom tube 5 also has a fluid outlet connected to the inner cavity 11, so that the inside of the inflatable object is connected to the outside in the inflation and deflation state. A second limiting structure is arranged between the bottom tube 5 and the check valve 40, and the second limiting structure is arranged to allow the check valve 40 to move along its axial direction, but limit its rotation; Figure 5 As shown, the second limiting structure includes a limiting groove 51 provided on the bottom cylinder 5, and a limiting slider 412 provided on the valve seat 41, the limiting groove 51 extends along the axial direction of the bottom cylinder 5, and three limiting grooves 51 are spaced apart along the circumferential direction of the bottom cylinder 5, and the valve seat 41 is correspondingly provided with limiting sliders 412 corresponding to the three limiting grooves 51, so as to ensure the stability of the movement of the valve seat 41; a fourth sealing ring 84 is also nested on the base 10, and the sealing between the base 10 and the valve sleeve 7 is increased by the fourth sealing ring 84; preferably, it also includes a reset spring 6, which is arranged between the bottom cylinder 5 and the valve seat 41, and causes the valve seat 41 to apply force to the valve seat 41 in the direction of movement of the base 10, so that a sealed connection can be formed between the valve seat 41 and the base 10.

[0059] Furthermore, if Figure 1-Figure 12As shown, it also includes a valve sleeve 7 with a hollow structure, the base 10 is fixed to the valve sleeve 7, and the upper ends of the valve sleeve 7 are respectively provided with a first positioning groove 71a and a second positioning groove 71b, and the sizes of the first positioning groove 71a and the second positioning groove 71b are different; accordingly, the base 10 has positioning protrusions 15 corresponding to the first positioning groove 71a and the second positioning groove 71b on both sides, so that the two can be quickly aligned and connected, improving the installation efficiency of the base 10 and the valve sleeve 7; the valve sleeve 7 also has wings extending to both sides for user operation. Preferably, a third sealing ring 83 is nested between the valve seat 41 and the base 10 to improve the sealing of the connection between the two.

[0060] In addition, the utility model also provides an inflatable mattress, comprising a mattress body and an air nozzle attached to the mattress body, wherein the air nozzle is configured as the above-mentioned inflation and deflation control device, so as to freely control the inflation and deflation process of the inflatable mattress. Preferably, the inflation and deflation control device can also be applied to an inflatable headrest, an inflatable pillow, and any other inflatable product, and has a wide range of applications.

[0061] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An inflation and deflation control device for controlling the inflation and deflation of an inflatable object, comprising: A base body having an inner cavity allowing the interior of the inflatable object to communicate with the outside; A cap rotatably connected to the base; and A check valve, comprising a valve seat and a valve flap attached to the valve seat, wherein an air filling passage is formed on the valve seat, and the valve flap is configured to allow air flow to fill the interior of the inflatable object through the air filling passage, but restrict air flow from being discharged to the outside through the air filling passage; It is characterized in that The check valve is configured to be movable between a first position and a second position, the valve seat and the base are configured to be sealed and connected at the first position, and the valve seat and the base are configured to be spaced and separated at the second position to form a deflation channel therebetween, and the airflow in the inflatable object is discharged to the outside through the deflation channel; The outer wall of the base body has a first guide portion and a second guide portion, the first guide portion is suitable for guiding the cap to rotate within a first angle range, and the second guide portion is suitable for guiding the cap to rotate within a second angle range; The cap is connected to the check valve via a driving mechanism, and the driving mechanism is configured as follows: When the cap rotates within the second angle range, the drive mechanism and the check valve are dynamically coupled so that the check valve moves from the first position to the second position; when the cap rotates within the first angle range, the drive mechanism and the check valve are dynamically decoupled so that the check valve is maintained at the first position.

2. The inflation and deflation control device according to claim 1, characterized in that: The first guide portion is configured as a spiral groove circumferentially arranged along the outer wall of the base, and the cap is provided with a sliding block adapted to the spiral groove.

3. The inflation and deflation control device according to claim 2, characterized in that: The second guide portion is configured as an annular groove arranged along the circumference of the base, and the annular groove is suitable for guiding the sliding block to slide in the circumference of the base.

4. The inflation and deflation control device according to claim 2 or 3, characterized in that: A transition groove is provided between the first guide portion and the second guide portion to connect the two. A stop portion is provided in the transition groove. The stop portion is configured to prevent the slider from entering the second guide portion from the transition groove when no pulling force is applied to the cap along the axial direction of the cap.

5. The inflation and deflation control device according to claim 1, characterized in that: The driving mechanism comprises: a drive rod configured to move in response to operation of the cap; and a power transmission unit adapted to be associated with the driving rod and the check valve so as to transmit the driving force of the driving rod to the check valve; When the driving rod rotates within the second angle range, the power transmission unit and the check valve are dynamically coupled so that the check valve moves from the first position to the second position; when the driving rod rotates within the first angle range, the power transmission unit and the check valve are dynamically decoupled so that the check valve is maintained at the first position.

6. The inflation and deflation control device according to claim 5, characterized in that: The driving rod has: a sealing portion adapted to form a sealed connection with the inner cavity wall; and A driving unit, which is suitable for driving the power transmission unit to rotate; The sealing portion is configured to gradually separate from the base body when the cap rotates along the first guide portion, so as to form an air charging and discharging passage therebetween.

7. The inflation and deflation control device according to claim 5, characterized in that: The power transmission unit comprises a pair of upper driving members and lower driving members that cooperate with each other, wherein the upper driving member is coupled to the driving rod, and the lower driving member is adapted to drive the check valve to move from a first position to a second position.

8. The inflation and deflation control device according to claim 7, characterized in that: A first limiting structure is arranged between the upper driving member and the base, and the first limiting structure is arranged to allow the upper driving member to rotate following the driving rod, but to limit its movement along the axial direction.

9. The inflation and deflation control device according to claim 7, characterized in that: The bottom of the lower driving member is formed with an actuating portion arranged obliquely downward, and the upper end of the valve seat is provided with an abutting protrusion matched with the actuating portion; When the lower driving member is driven to rotate, the actuating portion cooperates with the abutting protrusion to drive the valve seat to move from the first position to the second position.

10. The inflation and deflation control device according to claim 1, characterized in that: It also includes a bottom cylinder attached to the bottom of the base, a second limiting structure is arranged between the check valve and the bottom cylinder, and the second limiting structure is configured to allow the check valve to move along its axial direction but limit its rotation.

11. The inflation and deflation control device according to claim 10, characterized in that: A return spring is arranged between the bottom tube and the check valve, and the return spring is arranged to apply force to the check valve in a direction in which the check valve moves from the second position to the first position.

12. The inflation and deflation control device according to claim 1, characterized in that: A valve sleeve is also included, and the base is fixed to the valve sleeve.

13. An inflatable mattress, comprising a mattress body and an air nozzle attached to the mattress body, characterized in that: The gas nozzle is configured as a gas filling and deflation control device as described in any one of claims 1 to 12.

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