Inflatable products

Abstract

The utility model relates to an inflatable product to overcome the defects of the electric air pump of the existing inflatable product, such as high noise, low efficiency and large size. The built-in air pump of the inflatable product includes: a pump housing, which defines a accommodating chamber; a control device, which is installed on the pump housing and includes a knob, and the knob switches between a first preset position and a neutral position; a circuit board, which is arranged in the accommodating chamber, including a common electrical contact and a first control electrical contact; an air valve, which is arranged in the accommodating chamber and coupled to the control device; a brushless motor, which is arranged in the accommodating chamber and electrically connected to the circuit board. When the knob is switched to the first preset position, the common electrical contact and the first control electrical contact are electrically connected through the control device, and the control device opens the air valve. When the knob is switched to the neutral position, the electrical connection between the common electrical contact and the first control electrical contact is disconnected, and the control device closes the air valve.

Description

Technical Field

[0001] The utility model relates to an inflatable product with a built-in air pump. Background Art

[0002] Inflatable products such as air mattresses and inflatable sofas are favored by consumers due to their advantages of light weight, storability, portability, and convenience. Inflating or deflating inflatable products usually requires an air pump.

[0003] For the convenience of users, some inflatable products are equipped with a built-in air pump, the main body of which is located in the inflation chamber of the inflatable product, and the panel of which is mounted on the wall of the inflation chamber. The user operates the knob or switch on the air pump panel to make the air pump suck air from the outside and inflate the inflation chamber, or to make the air pump suck air from the inflation chamber and discharge the gas to the outside.

[0004] However, the electric built-in air pumps currently on the market basically use brushed motors, which have defects such as high noise, low efficiency, and large size, resulting in a poor experience for consumers. Utility Model Content

[0005] The utility model aims to provide an inflatable product with a silent electric built-in air pump capable of implementing inflation or deflation, so as to overcome the defects of the electric air pumps of existing inflatable products, such as high noise, low efficiency and large size.

[0006] To this end, the utility model provides an inflatable product, comprising at least one wall and a built-in air pump, wherein the at least one wall defines an inflation chamber, and the built-in air pump is arranged on the at least one wall and comprises: a pump housing, which defines a accommodating chamber, and the accommodating chamber is respectively connected to the internal and external fluids of the inflatable product; a control device, which is installed on the pump housing, and the control device also includes a knob, and the knob switches between a first preset position and a neutral position; a circuit board, which is arranged in the accommodating chamber, including a common electrical contact and a first control electrical contact; an air valve, which is arranged in the accommodating chamber and coupled to the control device; and a brushless motor, which is arranged in the accommodating chamber and electrically connected to the circuit board, wherein when the knob is switched to the first preset position, the common electrical contact and the first control electrical contact are electrically connected through the control device, and the control device opens the air valve; and when the knob is switched to the neutral position, the electrical connection between the common electrical contact and the first control electrical contact is disconnected, and the control device closes the air valve.

[0007] According to the above technical concept, the utility model may further include any one or more of the following optional forms.

[0008] In some optional forms, the knob switches between a first preset position, a neutral position, and a second preset position; and the circuit board also includes a second control electrical contact; wherein, when the knob is switched to the second preset position, the common electrical contact and the second control electrical contact are electrically connected through the control device, and the control device opens the gas valve; and when the knob is switched to the neutral position, the electrical connection between the common electrical contact and the second control electrical contact is disconnected, and the control device closes the gas valve.

[0009] In some optional forms, the built-in air pump further includes a panel mounted to the pump housing and covering an opening of the accommodating chamber.

[0010] In some optional forms, the control device also includes: a transmission member passing through the panel and fixedly connected to the knob, the transmission member including a pushing part and a triggering part, the triggering part establishing or disconnecting the electrical connection between the common electrical contact and the first control electrical contact as the knob is rotated; and a linkage member coupled to the transmission member and the air valve to move in a direction parallel to the axis of the transmission member when the transmission member rotates, and drive the air valve to open or close the airway between the inside and outside of the inflatable product.

[0011] In some optional forms, the knob is provided with a groove opening toward the panel, and includes a spring pin received in the groove and abutting against the panel.

[0012] In some optional forms, the pump housing includes an air valve abutment portion formed in the accommodating chamber, the air valve is axially movable and includes a valve core and a sealing member, the valve core includes a valve stem and a valve cap arranged at one end of the valve stem, the sealing member is sleeved on the valve cap and abuts against the air valve abutment portion when the air passage is closed.

[0013] In some optional forms, the gas valve further includes a spring sleeved on the valve stem, and the spring is used to keep one end of the valve stem abutting against the linkage member.

[0014] In some optional forms, the pump housing further comprises a guide ring formed in the accommodating chamber, the guide ring being provided with at least one guide groove, and the linkage member being movably mounted to the guide groove along the axial direction of the air valve.

[0015] In some optional forms, the linkage member includes an inclined surface oriented toward the transmission member, and the pushing portion is relatively slidable on the inclined surface to enable the linkage member to move along the axial direction of the gas valve when the transmission member rotates.

[0016] In some optional forms, the built-in air pump includes an airflow generating device, which includes: a shell, including an inner shell and an outer shell connected to each other by a connecting piece, forming an airflow channel between the inner shell and the outer shell; the brushless motor is installed to the inner shell and includes a terminal, a rotating shaft and a stator, and the terminal is electrically connected to the circuit board; and a fan is arranged at one end of the rotating shaft to rotate synchronously with the rotating shaft, and includes blades for driving air flow into or out of the airflow channel.

[0017] In some optional forms, the built-in air pump also includes a bracket surrounding and holding the brushless motor, and the bracket is mounted to the pump housing by a snap-fit ​​connection.

[0018] In some optional forms, the built-in air pump also includes a vibration-damping bushing disposed between the brushless motor and the bracket.

[0019] The built-in air pump of the inflatable product according to the utility model is driven by a brushless motor. Compared with a brushless motor, there is no physical contact between the commutator and the brushes during operation of the brushless motor, so there is no energy loss caused by corresponding friction, and no arc will be generated when the brushless motor is commutated.

[0020] Therefore, the beneficial technical effects brought about by the utility model are at least: the internal resistance and friction loss of the motor are reduced, thereby greatly improving the efficiency of the motor; the brushless motor does not have brushes that will be worn, thereby greatly improving the life of the motor; the brushless motor has low friction and does not generate arcs during operation, and has low noise; the brushless motor does not require carbon brushes, commutators and other structures, and has a compact structure, thereby improving the portability of the entire product. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features and advantages of the present invention will be better understood through the following optional embodiments described in detail in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar components.

[0022] Figures 1 to 5 They are schematic diagrams of five inflatable products;

[0023] Figure 6 A three-dimensional diagram of an inflatable product according to an embodiment of the utility model;

[0024] Figures 7 to 11 They are three-dimensional images of the built-in air pump of the inflatable product observed from five different viewing angles;

[0025] Fig.12 is an exploded view of the built-in air pump;

[0026] Fig.13 is a cross-sectional view of the internal air pump when the airway is closed;

[0027] Fig.14 is a cross-sectional view of the built-in air pump when the airway is opened;

[0028] Fig.15 A schematic diagram of the internal structure of the brushless motor with a built-in air pump;

[0029] Fig.16 A schematic diagram of the surface of an embodiment of the circuit board with a built-in air pump;

[0030] Fig.17 FIG. 4 is a schematic diagram of the surface of another embodiment of the circuit board with a built-in air pump.

[0031] The elements in the accompanying drawings are shown for simplicity and clarity and are not necessarily drawn to exact proportions. It is to be understood that these accompanying drawings can be used not only for explaining and illustrating the present utility model, but also for defining the present utility model when necessary. DETAILED DESCRIPTION

[0032] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are only exemplary of specific ways to implement and use the present invention, rather than limiting the scope of the present invention.

[0033] In this specification, when describing the structural position of each component, expressions such as up, down, top, bottom, inside, outside, etc. indicating directions are not absolute but relative. When the components are arranged as shown in the figure, these expressions indicating directions are appropriate, but when the position of the components in the figure changes, these expressions indicating directions also change accordingly.

[0034] In this specification, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like 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 direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in this specification can be understood according to the specific circumstances.

[0035] Inflatable products

[0036] Figures 1 to 5 Five inflatable products are schematically shown, among which: Figure 1 , Figure 2 , Figure 4 and Figure 5 The inflatable mattress of the inflatable product shown in Figure 3 The inflatable product shown is an inflatable pool.

[0037] In the description of the present application, the inflatable product 10 includes at least one first wall 11, a second wall 12 and an inflation chamber 13 for inflation defined by the first wall 11 and the second wall 12. After the pressure of the gas (e.g., air) in the inflation chamber 13 reaches a desired value, the inflatable product 10 is in an inflated state and maintains a preset shape; and when the gas in the inflation chamber 13 is discharged, the inflatable product 10 is in a deflated state, and the volume of the inflatable product 10 is greatly reduced relative to when it is in the inflated state, thereby facilitating the storage of the inflatable product 10.

[0038] A plurality of tensioning members are provided in the inflation chamber 13 of the inflatable product 10, and the tensioning members are connected to the first wall 11 and the second wall 12 by high-frequency welding, hot melting, gluing or other connection methods. After being tensioned, the tensioning members provide a pulling force to the first wall 11 and the second wall 12 to limit the deformation of the inflatable product 10, so that the inflatable product 10 can maintain a preset shape after being inflated.

[0039] Optionally, the plurality of tension members have different structures in different embodiments. For example, each tension member is a sheet-like tension member 21 or a line-like tension member 22 .

[0040] The sheet-like tension member 21 may have a single-layer structure or a composite-layer structure according to actual needs.

[0041] When the sheet-like tension member 21 is a single-layer sheet, it can be made of a polymer material, which can include but is not limited to one or more of polyvinyl chloride (PVC), polyurethane (PU), thermoplastic urethanes (TPU), polyethyleneterephthalate (PET), ethylene-vinyl acetate (EVA) copolymer and nylon. It can be understood that the main body of the single-layer sheet-like tension member 21 can also be made of other materials other than polymer materials in other embodiments, such as a fabric material, wherein the fabric material can be finely woven or formed into a mesh structure. The fabric material can be but is not limited to a natural fiber fabric (for example, but not limited to, cotton fabric, linen fabric, wool fabric, silk fabric) or a synthetic fiber fabric (for example, but not limited to, polyester fiber fabric, polyethylene fiber fabric, polypropylene fiber fabric).

[0042] When the sheet-like tension member 21 is a composite sheet, it is composed of two or more layers of sheets bonded together by gluing, welding or other means, and each layer of the multi-layer sheet can be made of the polymer material or other materials as described above.

[0043] The linear tension member 22 includes one or more wires, which span the distance between the first wall 11 and the second wall 12 of the inflatable product 10 and are optionally parallel or substantially parallel in space, for example, the wires are spaced from each other at equal distances or in a manner that varies according to a certain rule. The material of one or more wires in the linear tension member 22 can be, but is not limited to, natural fibers (for example, but not limited to, cotton fibers, linen fibers, wool fibers, silk fibers) or synthetic fibers (for example, but not limited to, polyester fibers, polyethylene fibers, polypropylene fibers). The linear tension member 22 is usually indirectly connected to the first wall 11 and the second wall 12 via a connector, and the connector can be made of, but is not limited to, a polymer material that facilitates welding of the first wall 11 and the second wall 12.

[0044] Built-in air pump

[0045] The following uses Figures 6 to 15 A preferred embodiment of the built-in air pump 100 for an inflatable product according to the present invention is described below.

[0046] Next, the built-in air pump 100 is described by taking the inflatable product 10 as an inflatable mattress as an example. Figure 6 As shown, the built-in air pump 100 is disposed on the side wall 14 of the inflatable mattress. More specifically, the main body of the built-in air pump 100 is located in the inflation chamber of the inflatable product 10, and the panel 120 of the built-in air pump 100 is mounted on the side wall 14 of the inflation chamber so as to be visible from the outside of the inflatable product 10. The user can operate the knob 200 on the panel 120 to make the built-in air pump 100 suck air from the outside and inflate the inflation chamber, or make the built-in air pump 100 suck air from the inflation chamber and discharge the gas to the outside, and its specific structure and working principle will be described in detail below.

[0047] It is understandable that the built-in air pump 100 can be used in various types of inflatable products, including but not limited to Figures 1 to 5 The inflatable mattress and inflatable pool shown, as well as various other types of inflatable products, such as inflatable sofas or inflatable toys, etc.

[0048] like Figures 7 to 15 As shown, the built-in air pump 100 optionally mainly includes a pump housing 140 , a panel 120 , a knob 200 , a circuit board 400 , an air valve 600 , a bracket 700 and an airflow generating device 800 .

[0049] like Figures 7 to 14 As shown, the pump housing 140 may optionally include a first pump housing 110 and a second pump housing 130 connected to each other. The first pump housing 110 defines a first accommodating chamber 111. Figure 8 In the orientation shown, the second pump housing 130 is mounted to the bottom of the first pump housing 110 and defines a second accommodating chamber 131 that is in communication with the first accommodating chamber 111. For example, the second pump housing 130 is mounted to the first pump housing 110 by means of screws 900; in other embodiments, the second pump housing 130 may also be threadedly connected to the first pump housing 110, or may be connected to the first pump housing 110 by means of a snap-fit. The second pump housing 130 is provided with a lower vent hole 132 that connects the second accommodating chamber 131 with the internal fluid of the inflatable product 10. The panel 120 is mounted to the top of the first pump housing 110 and covers the top opening of the first accommodating chamber 111. The panel 120 is provided with an opening 122 for air flow into the first accommodating chamber 111. Optionally, the panel 120 is also provided with a power hole 121. In Fig.12 In the orientation shown, the power interface 124 is installed to the panel 120 from below the power hole 121 to connect an external power source through the power hole 121 to power the built-in air pump 100. The circuit board 400 is installed in the first accommodating chamber 111. It can be understood that the pump housing 140 can have other structures in other embodiments, such as the first pump housing 110 and the second pump housing 130 being integrally formed.

[0050] like Figure 7 as well as Figures 11 to 14 As shown, the knob 200 is mounted on the outer side of the panel 120 around the opening 122 and can rotate bidirectionally for the user to operate, and the two rotation directions correspond to the inflation and deflation of the inflatable product 10 respectively. Figure 7 In the orientation shown, the knob 200 is mounted on the top of the panel 120. The center of the knob 200 is optionally provided with a first vent hole 201 that allows the first accommodating chamber 111 to communicate with the external fluid of the inflatable product 10. It is understood that the first vent hole 201 can also be set at other positions in other embodiments, for example, the first vent holes 201 can be set on the knob 200 and form a circle. It is also understood that the first vent hole 201 can also be omitted, for example, in some embodiments, the first accommodating chamber 111 is connected to the external fluid through an opening on the panel (not shown), or through a gap between the panel and the knob (not shown).

[0051] In addition, the knob 200 is optionally provided with a groove 203 opening toward the panel 120, and includes a first spring 204 and a spring pin 205 accommodated in the groove 203. The spring pin 205 abuts against a recess 123 arranged on the edge of the opening 122 on the panel 120 through the first spring 204, so as to provide friction when the user does not operate the knob 200, so that the knob 200 will not rotate at will on the panel 120.

[0052] The built-in air pump 100 is also provided with an air valve 600. When the built-in air pump 100 is not working (for example, when the user normally uses the inflatable product), the air valve 600 closes the inflatable chamber of the inflatable product and the outside atmosphere to maintain the shape of the inflatable product. When the built-in air pump 100 is in operation (for example, when the user inflates or deflates the inflatable product), the air valve 600 opens, so that the inflatable chamber of the inflatable product is connected to the outside atmosphere.

[0053] In this embodiment, the opening and closing of the gas valve 600 is controlled by rotating the knob 200 .

[0054] like Figure 12 to Figure 14 As shown, the built-in air pump 100 further includes a transmission member 300. The transmission member 300 includes: a circular substrate 301; a fixing ring 302 protruding upward from the substrate 301; at least one pushing portion 304 protruding downward from the substrate 301, such as two pushing portions 304 symmetrical with respect to the center of the substrate 301; and a triggering portion 305 disposed at the bottom of the substrate 301, such as a copper sheet. The fixing ring 302 passes through the opening 122 of the panel 120 and is provided with two first screw holes 303 symmetrical with respect to the center thereof, and the knob 200 is correspondingly provided with two second screw holes 202 aligned with the two first screw holes 303, so that the transmission member 300 is fixedly connected to the knob 200 by screws 900 passing through the first screw holes 303 and the corresponding second screw holes 202, so that it can rotate synchronously with the knob 200. It can be understood that the screw connection between the knob 200 and the transmission member 300 is only an example. In other embodiments, the knob 200 and the transmission member 300 may also be connected together by snap-fit, thread or other means.

[0055] The user turns the knob 200 to control the start and stop of the built-in air pump 100. For example, the knob 200 has a neutral position, a first preset position, and a second preset position. When the knob 200 is in the neutral position, the built-in air pump 100 does not work; when the knob 200 is in the first preset position, the built-in air pump 100 inflates the inflatable product 10; when the knob 200 is in the second preset position, the built-in air pump 100 draws air from the inflatable product 10 and discharges it to the outside.

[0056] The neutral position is optionally between the first preset position and the second preset position. The knob 100 in the neutral position reaches the first preset position or the second preset position after being rotated a certain angle around its rotation axis. For example, the knob 100 is rotated counterclockwise from the neutral position by a certain angle (such as, but not limited to, 90 degrees), and the built-in air pump 100 inflates the inflatable product 10; the knob 100 is rotated clockwise from the neutral position by a certain angle (such as, but not limited to, 90 degrees), and the built-in air pump 100 extracts the air inside the inflatable product 10 and discharges it to the outside. Alternatively, the knob 100 is rotated clockwise from the neutral position by a certain angle (such as, but not limited to, 90 degrees), and the built-in air pump 100 inflates the inflatable product 10; the knob 100 is rotated counterclockwise from the neutral position by a certain angle (such as, but not limited to, 90 degrees), and the built-in air pump 100 extracts the air inside the inflatable product 10 and discharges it to the outside.

[0057] It is understandable that the second preset position is optional. In other words, the air extraction function of the built-in air pump 100 can be omitted in some embodiments.

[0058] In this embodiment, the circuit board 400 is provided with a plurality of electric contacts. Fig.16 and Fig.17 , these electrical contacts are distributed on the movement path of the part where the trigger part 305 of the transmission member 300 contacts the circuit board 400. The trigger part 305 slides along the arc path on the surface of the circuit board 400 as the knob 100 rotates, and contacts or separates from these electrical contacts respectively, thereby changing the electrical connection state between these electrical contacts. Fig.16 The electrical contacts include a common electrical contact 401 and three control electrical contacts 402-404, wherein the distance between the common electrical contact 401 and the rotation axis of the knob 100 is smaller than the distance between the three control electrical contacts 402-404 and the rotation axis of the knob 100. The triggering part 305 is always in contact with the common electrical contact 401, and selectively contacts with one of the first control electrical contact 402, the second control electrical contact 403 and the third control electrical contact 404, so that the control electrical contact and the common electrical contact 401 are electrically connected through the triggering part 305. For example, the built-in air pump 100 is configured as follows:

[0059] - When the knob 200 is rotated to a first preset position in a first direction (e.g., clockwise), the first control electrical contact 402 and the common electrical contact 401 are electrically connected via the trigger portion 305, the built-in air pump 100 provides an inflation signal to the brushless motor 811 in the airflow generating device 800, the air valve 600 is opened, and the built-in air pump 100 inflates the inflatable product;

[0060] - When the knob 200 is rotated to a second preset position in a second direction (e.g., counterclockwise), the third control electrical contact 404 and the common electrical contact 401 are electrically connected via the trigger portion 305, the built-in air pump 100 provides an air extraction signal to the brushless motor 811 in the airflow generating device 800, the air valve 600 is opened, and the built-in air pump 100 extracts air from the inflatable product;

[0061] -When the knob 200 is in the neutral position, the second control electrical contact 403 and the common electrical contact 401 are electrically connected via the trigger portion 305, the electrical connection between the first control electrical contact 402 and the common electrical contact 401 and between the third control electrical contact 404 and the common electrical contact 401 are disconnected, the built-in air pump 100 stops providing control signals to the brushless motor 811 in the airflow generating device 800, and cuts off the power supply circuit of the airflow generating device 800 to prevent misoperation, and the air valve 600 is closed.

[0062] It can be seen that, by simply turning the knob 200 , the user can conveniently control the opening and closing of the air valve 600 and the starting and stopping of the airflow generating device 800 at the same time.

[0063] It can be understood that, although three control electrical contacts are provided in the present embodiment, the second control electrical contact 403 and the third control electrical contact 404 are respectively optional. Specifically, when the third control electrical contact 404 is cancelled, the built-in air pump 100 does not have the air extraction function; when the second control electrical contact 403 is cancelled, the built-in air pump 100 can be configured to connect the power supply circuit of the airflow generating device 800 only when the first control electrical contact 402 (or the optional third control electrical contact 404) and the common electrical contact 401 are electrically connected. In other words, by providing at least one control electrical contact, the built-in air pump 100 can be controlled to start and stop inflating the inflatable product.

[0064] On this basis, in an alternative embodiment, more precise control of the built-in air pump 100 can be achieved by setting more control electrical contacts.

[0065] refer to Fig.17In other embodiments, on the basis of the above embodiments, two additional control electrical contacts (fourth control electrical contact 405, fifth control electrical contact 406) are added between the first control electrical contact 402 and the second control electrical contact 403. That is, the electrical contacts include a common electrical contact 401 and five control electrical contacts 402-406. Among them, when the trigger part 305 contacts the first control electrical contact 402, the second control electrical contact 403 and the third control electrical contact 404, the working state of the built-in air pump 100 is the same or substantially the same as that in the above embodiments. The difference is that when the trigger part 305 contacts the fourth control electrical contact 405 or the fifth control electrical contact 406, the built-in air pump 100 may have a different working state from when the trigger part 305 contacts the first control electrical contact 402. For example, when the trigger part 305 contacts the fourth control electrical contact 405, the power of the built-in air pump 100 is lower than when the trigger part 305 contacts the first control electrical contact 402; and when the trigger part 305 contacts the fifth control electrical contact 406, the power of the built-in air pump 100 is lower than when the trigger part 305 contacts the fourth control electrical contact 405. It is understood that one of the fourth or fifth control electrical contacts can be omitted in some embodiments, so that there is only one additional control electrical contact between the second control electrical contact and the first control electrical contact; in other embodiments, more control electrical contacts can also be provided. In this way, more precise control of the built-in air pump 100 is achieved.

[0066] The electrical contacts may be metal devices (such as metal sheets) attached to or embedded in the circuit board 400. For example, the circuit board 400 is a printed circuit board (PCB), and the electrical contacts are formed on the surface of the circuit board 400 during the manufacturing process of the circuit board 400.

[0067] It can be understood that although the common electrical contacts in the above embodiments are continuous conductive parts, in other embodiments, the common electrical contacts may also be discrete, but these discrete common electrical contacts all have the same potential (for example, these discrete common electrical contacts are electrically connected to each other), and each discrete common electrical contact can be electrically connected to a control electrical contact through the trigger part 305.

[0068] Next, for ease of understanding, based on Fig.12 The orientation shown describes how the gas valve 600 is controlled.

[0069] The annular linkage member 500 is coupled to the transmission member 300 and the air valve 600 so that when the transmission member 300 rotates, it is pushed by the pushing portion 304 to move in a direction parallel to the axis of the transmission member 300 and drives the air valve 600 to move up and down to open or close the airway between the inside and outside of the inflatable product 10.

[0070] More specifically, if Figure 12 to Figure 14 As shown, the first pump housing 110 includes a guide ring 112 formed in the first accommodating chamber 111, and the guide ring 112 is provided with at least one vertical guide groove 113, for example, four guide grooves 113 evenly distributed circumferentially, and the linkage 500 correspondingly includes four guide ribs 501 respectively adapted to the shapes of these guide grooves 113, so that the linkage 500 can be installed to these guide grooves 113 in an upward and downward manner through the cooperation between the guide ribs 501 and the guide grooves 113. In other words, the linkage 500 can only move up and down relative to these guide grooves 113, and cannot rotate freely. It can be understood that in other embodiments, the number of the above-mentioned guide grooves 113 can be more or less. For example, in some embodiments, the number of guide grooves 113 is 1, 2, 3 or 5, and the guide ribs 501 are arranged corresponding to the guide grooves 113.

[0071] In addition, the linkage member 500 further includes an inclined surface disposed on its upper edge and oriented toward the transmission member 300, for example, two groups of inclined surfaces respectively connected to the two push parts 304, each group of inclined surfaces includes a lowest point 502 adjacent to the bottom of the linkage member 500 and a first section 503 and a second section 504 extending upwardly and obliquely from both sides of the lowest point 502 to the highest point. When the transmission member 300 rotates, the push part 304 can slide relatively on the first section 503 or the second section 504 between the lowest point and the highest point of the corresponding inclined surface, so that the linkage member 500 can move up and down along the guide groove 113. Thus, the knob 200, the transmission member 300 and the linkage member 500 together constitute the control device of the built-in air pump 100.

[0072] like Figure 12 to Figure 14 As shown, the air valve 600 can move axially (i.e., move up and down) and includes a valve core and a sealing member 603, wherein the valve core includes a valve stem 601 and a valve cap 602, the valve stem 601 vertically extends in the first accommodating chamber 111 and passes through a limiting portion 114 provided in the guide ring 112, the valve cap 602 is provided at the lower end of the valve stem 601 below the limiting portion 114 and extends to the second accommodating chamber 131 through the bottom opening of the first pump housing 110, and the sealing member 603 is sleeved on the valve cap 602. The limiting portion 114 is configured to allow air flow to pass through and is used to guide the valve stem 601 to move up and down without deviating from its axial direction. The bottom opening edge of the first pump housing 110 is provided with an annular air valve abutment portion 115 protruding downward into the second accommodating chamber 131, so that the sealing member 603 on the valve cap 602 abuts against the air valve abutment portion 115 when the airway is closed.

[0073] In addition, the air valve 600 further includes an upper spring seat 605 sleeved on the upper end of the valve stem 601 and a second spring 604 sleeved on the valve stem 601 below the upper spring seat 605, and the limiting portion 114 of the guide ring 112 is formed with a lower spring seat 116. The second spring 604 can be compressed between the upper spring seat 605 and the lower spring seat 116, and through elastic force, one end of the valve core (i.e., the upper end of the valve stem 601) is kept against the linkage member 500, and the inclined surface of the linkage member 500 is kept against the pushing portion 304 of the transmission member 300.

[0074] like Figures 13 to 15 As shown, the airflow generating device 800 is installed in the second accommodating chamber 131. The airflow generating device 800 includes a housing 810, a brushless motor 811 and a fan 806. The brushless motor 811 is electrically connected to the circuit board 400. The circuit board 400 provides a control signal to the brushless motor 811 to control the direction and speed of the brushless motor 811. Among them, the housing 810 includes an inner housing 802, an outer housing 803 and a plurality of connectors 804. The brushless motor 811 is clamped in the inner housing 802. The rotating shaft 805 of the brushless motor 811 is limited by a bearing 807 fixed to the inner housing 802 and extends parallel or approximately parallel to the length direction of the inner housing 802. The permanent magnet 808 is fixed on the rotating shaft 805. The coil and the iron core 809 as the stator of the brushless motor 811 are optionally arranged at the bottom of the inner housing 802. The connector 804 is disposed between the inner housing 802 and the outer housing 803 and connects the inner housing 802 and the outer housing 803. The inner housing 802 and the outer housing 803 together define an airflow channel 812. The brushless motor 811 is powered by the terminal 801. Optionally, the terminal 801 is mounted to the bottom of the inner housing 802 and is electrically connected to the circuit board 400. The fan 806 is disposed at the upper end of the rotating shaft 805. When the brushless motor 811 is powered, the current in the coil winding changes in a certain order, and a changing magnetic field is formed accordingly. This changing magnetic field can drive the permanent magnet 808 to rotate, so as to drive the rotating shaft 805 and the fan 806 to rotate synchronously. The fan 806 has a plurality of blades, and when the fan 806 rotates, these blades drive air to flow into or out of the airflow channel 812 and form an airflow. Optionally, each of the connecting members 804 has a flat structure. For example, each of the connecting members 804 is a connecting plate and is arranged along a direction substantially parallel to the rotating shaft 805 of the brushless motor 811 .

[0075] The built-in air pump 100 may further include a bracket 700. The bracket 700 is placed between the airflow generating device 800 and the pump housing 140 of the built-in air pump 100. In this way, the airflow generating device 800 may be first mounted on the bracket 700, and then the bracket 700 and the airflow generating device 800 may be mounted together in the pump housing 140. The bracket 700 may optionally have a hollow cylindrical shape composed of two halves 701 for surrounding and holding an outer housing 803 of the airflow generating device 800. A buckle 702 is provided on the outer side of each half 701 to mount the bracket 700 to the second pump housing 130 by a buckle connection, so that the installation is quick and no fasteners such as screws are required. Optionally, the built-in air pump 100 further includes a vibration-damping bushing 703 sleeved between the outer shell 803 of the airflow generating device 800 and the bracket 700, and the vibration-damping bushing 703 is made of silica gel or other suitable elastic vibration-damping materials to significantly reduce the noise generated by the collision between the outer shell 803 and the bracket 700 when the airflow generating device 800 is in operation, and significantly reduce the transmission of vibration of the airflow generating device 800 to the bracket 700 (and the pump housing 140 of the built-in air pump 100) when the airflow generating device 800 is in operation. It can be understood that in other embodiments, the vibration-damping bushing 703 can be alternatively arranged between the bracket 700 and the second pump housing 130 of the built-in air pump 100.

[0076] In other embodiments, the bracket 700 may be omitted, so that the airflow generating device 800 is directly installed in the pump housing 140 of the built-in air pump 100 .

[0077] When it is necessary to start the built-in air pump 100, the knob 200 is rotated from the initial / neutral position along the first direction to the first preset position or along the second direction to the second preset position, so that the transmission member 300 rotates synchronously with the knob 200 until the trigger portion 305 slides to electrically connect the first control electrical contact 402 or the third control electrical contact 404 with the common electrical contact 401 to trigger the control signal, and the pushing portion 304 slides relatively from the lowest point 502 along the first section 503 or the second section 504 to the highest point relative to the inclined surface of the linkage member 500, thereby pushing the linkage member 500 to overcome the elastic force of the second spring 604 and move downward, and the downward movement of the linkage member 500 will also push the valve stem 601 to move downward, thereby separating the sealing member 603 on the valve cap 602 from the air valve abutment portion 115 to open the airway. Therefore, no matter which direction the knob 200 rotates, the airway will be opened, and the airflow generating device 800 controls the shaft 805 of the brushless motor 811 to rotate in opposite directions in two situations according to the control signal triggered by the trigger unit 305, thereby realizing the two functions of inflation and deflation.

[0078] The air flow path is Fig.14 When the inflatable product 10 is inflated, the airflow direction is as shown in FIG. Fig.14 As shown by the arrows in the figure. Air enters the built-in air pump 100 from the outside of the inflatable product 10 through the upper vent hole 201, then flows through the transmission member 300, the guide ring 112 and the airflow generating device 800 in sequence, and finally enters the inside of the inflatable product 10 from the built-in air pump 100 through the lower vent hole 132. When the inflatable product 10 is deflated, the airflow direction is the same as that of the air pump 100. Fig.14 The air enters the built-in air pump 100 from the inside of the inflatable product 10 through the lower vent hole 132, then flows through the airflow generating device 800, the guide ring 112 and the transmission member 300 in sequence, and finally is discharged from the built-in air pump 100 to the outside of the inflatable product 10 through the upper vent hole 201.

[0079] When the knob 200 is turned back to the initial position to close the built-in air pump 100, the synchronous rotation of the transmission member 300 causes the trigger portion 305 to slide until the second control electrical contact 403 is electrically connected to the common electrical contact 401, and the push portion 304 returns from the highest point to the lowest point 502 relative to the inclined surface of the linkage member 500. At this time, the second spring 604 causes the valve stem 601 to move upward through elastic force to keep contacting the linkage member 500 and drive the linkage member 500 to return to the highest position, and causes the sealing member 603 on the valve cap 602 to contact the air valve contact portion 115 to close the airway, as shown in FIG. Fig.13 The rotating shaft 805 of the brushless motor 811 stops rotating in this state. If the inflatable product 10 is in a full state at this time, the internal air pressure of the inflatable product 10 helps to keep the sealing member 603 of the air valve 600 tightly against the air valve abutment portion 115, thereby enhancing the sealing effect and preventing air leakage.

[0080] The technical content and technical features of the utility model have been disclosed above. However, it is understood that under the creative idea of ​​the utility model, technicians in this field can make various changes and improvements to the above-disclosed concepts, but they all belong to the protection scope of the utility model.

[0081] The description of the above embodiments is exemplary rather than restrictive, and the protection scope of the present utility model is determined by the claims.

Claims

1. An inflatable product, characterized in that: include: at least one wall defining a gas-filled chamber; as well as A built-in air pump, disposed on the at least one wall, comprising: A pump housing, defining a receiving chamber, wherein the receiving chamber is in fluid communication with the interior and exterior of the inflatable product, respectively; a control device mounted on the pump housing and comprising a knob, the knob switching between a first preset position and a neutral position; A circuit board, disposed in the accommodating chamber, comprising a common electrical contact and a first control electrical contact; an air valve, disposed in the accommodating chamber and coupled to the control device; and a brushless motor, disposed in the accommodating chamber and electrically connected to the circuit board; Wherein, when the knob is switched to the first preset position, the common electrical contact and the first control electrical contact are electrically connected through the control device, and the control device opens the gas valve; and When the knob is switched to the neutral position, the electrical connection between the common electrical contact and the first control electrical contact is disconnected, and the control device closes the gas valve.

2. The inflatable product according to claim 1, characterized in that: The knob switches between a first preset position, a neutral position, and a second preset position; and The circuit board also includes a second control electrical contact; Wherein, when the knob is switched to the second preset position, the common electrical contact and the second control electrical contact are electrically connected through the control device, and the control device opens the gas valve; and When the knob is switched to the neutral position, the electrical connection between the common electrical contact and the second control electrical contact is disconnected, and the control device closes the gas valve.

3. The inflatable product according to claim 1, characterized in that: The built-in air pump further includes a panel mounted to the pump housing and covering an opening of the accommodating chamber.

4. The inflatable product according to claim 3, characterized in that: The control device also includes: a transmission member, passing through the panel and fixedly connected to the knob, the transmission member comprising a pushing portion and a triggering portion, the triggering portion establishing or disconnecting an electrical connection between the common electrical contact and the first control electrical contact as the knob rotates; and A linkage member is coupled to the transmission member and the air valve to move in a direction parallel to the axis of the transmission member when the transmission member rotates, and drives the air valve to open or close the air passage between the inside and the outside of the inflatable product.

5. The inflatable product according to claim 3, characterized in that: The knob is provided with a groove opening toward the panel, and comprises a spring pin accommodated in the groove and abutting against the panel.

6. The inflatable product according to claim 4, characterized in that: The pump housing includes an air valve abutment portion formed in the accommodating chamber, the air valve is axially movable and includes a valve core and a sealing member, the valve core includes a valve stem and a valve cap arranged at one end of the valve stem, the sealing member is sleeved on the valve cap and abuts against the air valve abutment portion when the air passage is closed.

7. The inflatable product according to claim 6, characterized in that The gas valve further comprises a spring sleeved on the valve stem, and the spring is used to keep one end of the valve stem against the linkage member.

8. The inflatable product according to claim 4, characterized in that The pump housing further comprises a guide ring formed in the accommodating chamber, wherein the guide ring is provided with at least one guide groove, and the linkage member is movably mounted to the guide groove along the axial direction of the air valve.

9. The inflatable product according to claim 4, characterized in that: The linkage member includes an inclined surface oriented toward the transmission member, and the pushing portion can slide relatively on the inclined surface, so that the linkage member moves along the axial direction of the gas valve when the transmission member rotates.

10. The inflatable product according to claim 1, characterized in that The built-in air pump includes an airflow generating device, and the airflow generating device includes: A housing, comprising an inner housing and an outer housing connected to each other by a connecting member, and an air flow channel is formed between the inner housing and the outer housing; The brushless motor is mounted to the inner housing and includes a terminal, a rotating shaft and a stator, wherein the terminal is electrically connected to the circuit board; and The fan is arranged at one end of the rotating shaft to rotate synchronously with the rotating shaft and comprises blades for driving air flow to flow into or out of the air flow channel.

11. The inflatable product according to claim 1, characterized in that The built-in air pump also includes a bracket surrounding and holding the brushless motor, and the bracket is mounted to the pump housing through a snap connection.

12. The inflatable product according to claim 11, characterized in that The built-in air pump also includes a vibration-damping bushing sleeved between the brushless motor and the bracket.

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