Internal and external multi-purpose pump

Abstract

Provided is an internal and external multi-purpose pump, comprising a housing, and an air pump built into a mounting cavity of the housing. The housing comprises a base body, and an end cover movably connected to the base body. A switch assembly is rotatably mounted on the end cover. Part of the structure of the switch assembly extends into the mounting cavity and is connected to the air pump, and is used to, by means of rotation, drive the air pump to switch between inflation and deflation positions. A technical solution provided by the present invention can manually switch between inflation and deflation functions of the air pump without opening the end cover, and has a simple structure and is convenient to operate.

Description

Internal and external multi-purpose pump TECHNICAL FIELD

[0001] The present application relates to the field of inflator pump, in particular to an internal and external multi-purpose pump. BACKGROUND

[0002] With the rise of outdoor activities, inflatables are widely used today, such as inflatable beds and the like, in order to meet the inflatables for inflation, and to achieve the effect of saving time and effort, usually use inflator pump for inflating products.

[0003] At present, an internal and external multi-purpose pump is usually used to inflate and deflate the inflatable products such as inflatable beds, the internal and external multi-purpose pump comprises a shell and a gas pump arranged in the shell, when the gas pump cooperates with the shell to inflate and deflate the inflatable products, the internal and external multi-purpose pump forms an internal pump. The gas pump can also be taken out of the shell for use alone, at this time it is equivalent to an external pump.

[0004] In the related art, the internal and external multi-purpose pump generally has the functions of inflating and deflating, and the common way to switch the functions of inflating and deflating is to set a switching mechanism and a driving motor in the shell of the internal and external multi-purpose pump, to set a manual switching mechanism on the gas pump, and to take out the gas pump from the shell and then change the direction before reassembling it into the shell. The above operation modes have the problems of complex structure or inconvenient operation, and the start of the gas pump is often operated only when the end cover of the shell is opened.

[0005] SUMMARY

[0006] The present application aims at least to provide an internal and external multi-purpose pump which is convenient for manually switching the functions of inflating and deflating.

[0007] To achieve the above object and other related objects, the present application provides the following technical solutions:

[0008] An internal and external multi-purpose pump comprises a shell, the shell comprises a seat body and an end cover, the seat body is provided with a mounting cavity, opposite sides of the seat body are provided with an air inlet hole and an air outlet hole, the end cover is movably arranged on the seat body and used for closing or opening the mounting cavity; a gas pump is slidably arranged in the mounting cavity between the air inlet hole and the air outlet hole, the gas pump has a first position, a second position and a third position, the second position corresponds to the position of the air outlet hole, the third position corresponds to the position of the air inlet hole, the first position is between the second position and the third position, and the gas pump is used for stopping when moving to the first position; a switch assembly is rotatably arranged on the end cover, part of the structure of the switch assembly extends into the mounting cavity and is connected with the gas pump, and the switch assembly is used for switching the gas pump between the first position, the second position and the third position by rotation to realize different working modes.

[0009] In some embodiments, the switch assembly comprises a knob and a linkage rod; the knob is rotatably mounted on the end cover, one end of the linkage rod is connected to the knob, and the other end of the linkage rod extends into the installation cavity and is inserted into the sliding groove on the upper part of the air pump.

[0010] In some embodiments, the end cover comprises a cover and a fixing plate, the fixing plate is connected to the side of the cover facing the air pump, the cover is provided with a circular hole, the fixing plate is provided with a limiting hole opposite to the circular hole, the knob is rotatably mounted in the circular hole, and the linkage rod extends into the installation cavity through the limiting hole and can rotate along an arc in the limiting hole.

[0011] In some embodiments, the limiting hole comprises a semicircular profile and a protruding portion protruding from the hole wall at the center of the semicircular profile, and the protruding portion protrudes inwardly away from the hole wall at the center of the limiting hole.

[0012] In some embodiments, the end of the protruding portion is arc-shaped, and the connection position between the protruding portion and the hole wall of the limiting hole is an arc transition.

[0013] In some embodiments, the limiting hole is an arc-shaped strip hole.

[0014] In some embodiments, the switch assembly further comprises a limiting piece and a positioning elastic piece, the knob is provided with a horizontal accommodating groove, the side wall of the knob is provided with a through hole communicating with the accommodating groove, the limiting piece is slidingly arranged in the accommodating groove and one end of the limiting piece protrudes outwardly from the through hole, the limiting piece is provided with a limiting portion on the circumferential side for limiting the movement of the limiting piece outwardly from the through hole, and the positioning elastic piece is located in the accommodating groove and is used to push the limiting piece so that one end of the limiting piece protrudes out of the through hole, and the end cover is provided with a plurality of positioning holes distributed along the circumferential side of the knob and allowing the limiting piece to be inserted.

[0015] In some embodiments, the top part of the air pump is provided with a power start key, and the end cover is provided with two start mechanisms at intervals, and the two start mechanisms are respectively opposite to the power start key when the air pump is located at the second position and the third position, so as to start the air pump.

[0016] In some embodiments, the start mechanism comprises an elastic convex contact piece, and the elastic convex contact piece is used to abut against the power start key when the air pump is located at the second position or the third position.

[0017] In some embodiments, the starting mechanism comprises a button arranged on the end cover, which is used to press the power starting key when the air pump is located at the second position or the third position.

[0018] In some embodiments, one side of the end cover is rotatably connected with the seat body, and the other side of the end cover is provided with a clamping groove, and the seat body is provided with a locking assembly, which comprises a mounting seat, a push rod, a clamping tongue and a first elastic member. The mounting seat is provided with a containing cavity, a first opening and a second opening. The first opening is arranged on the top surface of the mounting seat, and the second opening is arranged on the side of the mounting seat facing the end cover. The clamping tongue is slidingly arranged in the containing cavity, and the clamping tongue protrudes out of the containing cavity from the second opening for insertion into the clamping groove. The push rod is connected with the clamping tongue and protrudes out of the mounting seat from the first opening, and the push rod is used to drive the clamping tongue to slide.

[0019] In some embodiments, a valve assembly that can be triggered to open by the air pump is arranged at the air inlet hole and the air outlet hole. A sealing ring is arranged around the outer periphery of the valve plate of the valve assembly to seal the gap between the valve plate and the air inlet hole or the air outlet hole.

[0020] The above technical solutions of the present application can manually switch the inflation and deflation functions of the air pump without opening the end cover, which is simple in structure and convenient to operate. When the starting mechanism is arranged, the air pump can be started while the communication channel is connected, which is more efficient and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 shows a schematic view of the internal and external multi-purpose pump in the embodiment of the present application.

[0022] Fig. 2 shows a schematic view of the seat body and the cover in the embodiment of the present application.

[0023] Fig. 3 shows an exploded schematic view of the end cover in the embodiment of the present application.

[0024] Fig. 4 shows a schematic view of the locking assembly in the embodiment of the present application.

[0025] Fig. 5 shows an exploded schematic view of the knob and the end cover in the embodiment of the present application.

[0026] Fig. 6 shows an exploded schematic view of the clamping tube assembly in the embodiment of the present application.

[0027] Fig. 7 shows an exploded schematic view of the seat body and the valve assembly in the embodiment of the present application.

[0028] Fig. 8 shows a schematic view of the air pump in the embodiment of the present application.

[0029] Figure 9 shows a cross-sectional view of the inflation of the internal-external multi-purpose pump in the embodiment of the present application.

[0030] Figure 10 shows a cross-sectional view of the deflation of the internal-external multi-purpose pump in the embodiment of the present application.

[0031] Element Number Description

[0032] 10 Seat

[0033] 101 Installation cavity

[0034] 102 Air inlet hole

[0035] 103 Air outlet hole

[0036] 104 Bracket

[0037] 105 Cover

[0038] 106 Hinge seat

[0039] 107 Lugs

[0040] 11 Face cover

[0041] 110 Rotation shaft

[0042] 111 Clamping slot

[0043] 112 Guide block

[0044] 113 Circular hole

[0045] 114 First abutting portion

[0046] 115 Positioning hole

[0047] 116 Limiting slot

[0048] 12 fixed plate

[0049] 121 limiting hole

[0050] 122 second abutting portion

[0051] 123 third abutting portion

[0052] 124 connecting piece

[0053] 125 contact

[0054] 126 protruding portion

[0055] 13 vent hole

[0056] 20 mounting seat

[0057] 201 accommodating cavity

[0058] 202 first opening

[0059] 203 second opening

[0060] 21 push rod

[0061] 22 clamping tongue

[0062] 23 first elastic member

[0063] 30 knob

[0064] 301 boss

[0065] 302 accommodating groove

[0066] 31 linkage rod

[0067] 32 handle

[0068] 33 reinforcing rib

[0069] 34 positioning elastic member

[0070] 35 first section column

[0071] 36 second section column

[0072] 37 positioning sheet

[0073] 40 sealing gasket

[0074] 41 sealing elastic member

[0075] 42 valve body

[0076] 43 valve sheet

[0077] 44 column core

[0078] 50 pump shell

[0079] 501 air suction port

[0080] 502 air charging port

[0081] 503 flow channel frame

[0082] 504 guide strip

[0083] 505 gas flow channel

[0084] 506 sliding groove

[0085] 507 handle

[0086] 508 power interface

[0087] 51 motor

[0088] 52 fan blade

[0089] 53 power start key

[0090] 54 lighting button DETAILED DESCRIPTION

[0091] The present application is herein described, by way of example only, with the application can be implemented or applied in other different embodiments, and the details herein can be variously changed without departing from the spirit of the application.

[0092] Please refer to FIG. 1-10. It is to be understood that the drawings provided in the embodiments are only schematic and are non-limiting regarding the scope of the application as claimed. The drawings are intended to serve as a conceptual basis for the application and are not intended to limit the scope of the application in any way. Thus, the proportions of the various components may be scaled differently from what is shown in the figures, which are intended only to form a conceptual basis for the application.

[0093] First Embodiment

[0094] As shown in FIG. 1 and FIG. 2, the present embodiment provides an internal and external multi-purpose pump, which comprises a shell, a switch assembly, a valve assembly and an air pump. The shell is provided with a mounting cavity 101, and opposite sides of the shell are respectively provided with an air inlet hole 102 and an air outlet hole 103. The mounting cavity 101 is in communication with the outside through the air inlet hole 102 and the air outlet hole 103. The number of valve assemblies is two, and the two valve assemblies are respectively arranged at the air inlet hole 102 and the air outlet hole 103 to control the opening and closing of the air inlet hole 102 and the air outlet hole 103.

[0095] The air pump is arranged in the installation cavity 101 and can slide between the air inlet hole 102 and the air outlet hole 103. The air pump has a first position, a second position and a third position in the installation cavity 101. The air pump is in the first position when it is in the middle position of the installation cavity 101. The air pump is in the second position when it is close to the air outlet hole 103. The air pump is in the third position when it is close to the air inlet hole 102. The second position and the third position are the extreme positions of the air pump in the installation cavity 101. When the air pump is in the second position or the third position, the air pump triggers the corresponding valve assembly to open. For example, when the air pump is in the second position, the internal and external multi-purpose pump is used for inflating. When the air pump is in the third position, the internal and external multi-purpose pump is used for deflating. When the air pump is in the first position, the internal and external multi-purpose pump is in a stop working state.

[0096] The switch assembly is rotationally connected to the shell, and part of the structure of the switch assembly extends into the installation cavity 101 to connect with the air pump. The switch assembly can drive the air pump to switch between the first position, the second position and the third position.

[0097] The shell includes a seat body 10 and an end cover. The installation cavity 101 is arranged in the seat body 10, and the air inlet hole 102 and the air outlet hole 103 are arranged on opposite sides of the seat body 10. The seat body 10 is provided with a support 104 for supporting the valve assembly in the air inlet hole 102 and the air outlet hole 103, respectively. The seat body 10 is provided with two covers 105, which are hollow structures and are arranged on the two valve assemblies respectively to protect the valve assemblies.

[0098] In this embodiment, the end cover is rotationally connected to the seat body 10. Specifically, the seat body 10 is provided with a hinge seat 106, and one end of the end cover is provided with a rotating shaft 110. The rotating shaft 110 is rotationally connected with the hinge seat 106. When the end cover is arranged in the installation cavity 101, the end cover seals the air pump in the shell.

[0099] As shown in FIG. 1 and FIG. 4, in order to avoid the end cover being flipped randomly relative to the seat body 10, the other end of the end cover is connected with the seat body 10 in a lockable and unlockable manner. In the embodiment, the multi-purpose pump with the inner and outer placement includes a locking assembly arranged on the top surface of the seat body 10 for locking the end cover when the end cover is arranged on the seat body 10. The locking assembly includes a mounting seat 20, a push rod 21, a clamping tongue 22 and a first elastic member 23. The mounting seat 20 is arranged opposite to the hinge seat 106, and the mounting seat 20 is provided with a receiving cavity 201, a first opening 202 and a second opening 203. The first opening 202 is arranged on the top surface of the mounting seat 20, and the second opening 203 is arranged on the side of the mounting seat 20 facing the end cover. The first opening 202 and the second opening 203 are both communicated with the receiving cavity 201. The clamping tongue 22 is horizontally slidably arranged in the receiving cavity 201, and the clamping tongue 22 protrudes out of the receiving cavity 201 from the second opening 203 for clamping the end cover. The first elastic member 23 can be a spring, and there can be one or more first elastic members 23. The first elastic member 23 is arranged in the receiving cavity 201, and the two ends of the first elastic member 23 are respectively abutted with the cavity wall of the receiving cavity 201 and the clamping tongue 22. The first elastic member 23 is used for protruding the clamping tongue 22 out of the receiving cavity 201 to elastically clamp the end cover. The push rod 21 is connected with the clamping tongue 22, and the push rod 21 protrudes out of the top surface of the mounting seat 20 from the first opening 202. The push rod 21 is used for driving the clamping tongue 22 to slide relative to the mounting seat 20.

[0100] As shown in FIG. 1, FIG. 3, FIG. 4 and FIG. 5, it can be understood that the end surface of the end cover facing the mounting seat 20 is provided with a clamping groove 111 for clamping the clamping tongue 22. The end cover is further provided with a guide portion 112 arranged below the clamping groove 111. The guide portion 112 has an inclined surface matched with the clamping tongue 22. When the end cover is rotated to be arranged on the seat body 10, the guide portion 112 first abuts against the clamping tongue 22. The clamping tongue 22 is compressed into the receiving cavity 201 under the action of the inclined surface. When the end cover is rotated to the position, the clamping tongue 22 is protruded into the clamping groove 111 under the action of the first elastic member 23 to lock the end cover. When it is needed to open the end cover, the push rod 21 is pushed to drive the clamping tongue 22 to move into the receiving cavity 201 to release the end cover to be opened.

[0101] In other embodiments, the locking assembly includes the mounting seat 20, the clamping tongue 22 and the first elastic member 23. Different from the above-mentioned embodiment with the push rod 21, the clamping tongue 22 is in a stepped shape. The large end of the clamping tongue 22 is used for limiting the clamping tongue 22 in the receiving cavity 201, and the small end of the clamping tongue 22 is used for being inserted into the clamping groove 111. The lower side of the small end of the clamping tongue 22 is provided with an inclined surface for making the clamping tongue 22 disengage from the clamping groove 111. When the end cover is flipped to be opened, the groove wall of the clamping groove 111 pushes the clamping tongue 22 out of the clamping groove 111 through the inclined surface on the clamping tongue 22, thereby realizing the unlocking of the end cover.

[0102] The top end and bottom end structure of the switch assembly respectively protrude from the upper and lower sides of the end cover. The top end structure of the switch assembly is used for rotating operation by the operator, and the bottom end structure of the switch assembly is used for connecting the air pump to drive the air pump to slide in the seat body 10. For example, a groove structure is provided on the air pump, and when the end cover is turned to be arranged on the seat body 10, the bottom end structure of the switch assembly is inserted into the groove structure on the air pump. Since the air pump and the switch assembly are connected through the groove structure, the air pump and the switch assembly can be connected and separated at any time. The end cover is provided with a space for accommodating the switch assembly, and the switch assembly is arranged in the space. The end cover is provided with a structure for limiting the switch assembly in the space, so that the switch assembly rotates relative to the end cover and does not come off the end cover. Specifically, the end cover includes a cover 11 and a fixed plate 12. The cover 11 and the fixed plate 12 are both provided with a ventilation hole 13. A clamping groove 111 and a rotating shaft 110 are respectively arranged on opposite sides of the cover 11. A guide portion 112 is arranged on the cover 11. The cover 11 is provided with a circular hole 113. A first abutting portion 114 is protrudingly arranged on the side of the cover 11 facing the seat body 10 and surrounding the circumferential side of the circular hole 113. The first abutting portion 114 can be formed by extending the hole wall of the circular hole 113 downward. The fixed plate 12 is connected to the side of the cover 11 facing the seat body 10. The fixed plate 12 is provided with a limiting hole 121 corresponding to the circular hole 113. The middle position of the limiting hole 121 corresponds to the first position. The two ends of the limiting hole 121 correspond to the second position and the third position respectively. The fixed plate 12 is provided with a second abutting portion 122 and a third abutting portion 123 protrudingly arranged around the limiting hole 121 on the top surface of the fixed plate 12. The second abutting portion 122 surrounds the outside of the third abutting portion 123. The first abutting portion 114, the second abutting portion 122 and the third abutting portion 123 can be circular rings or a plurality of arc-shaped blocks arranged at intervals.

[0103] The switch assembly includes a knob 30, a linkage rod 31 and a handle 32. The circumferential side of the knob 30 is protrudingly provided with a radial boss 301. The knob 30 is rotatably arranged in the circular hole 113 of the cover 11. The knob 30 can be a cylindrical shell. The knob 30 is rotatably sleeved on the third abutting portion 123. The bottom surface of the radial boss 301 abuts against the second abutting portion 122, and the top surface of the radial boss 301 abuts against the first abutting portion 114. The knob 30 is installed on the end cover under the action of the first abutting portion 114 and the second abutting portion 122. In other embodiments, the first abutting portion 114 is not arranged on the cover 11, and the second abutting portion 122 and the third abutting portion 123 are not arranged on the fixed plate 12. Instead, detachable fixing rings are arranged at the two ends of the knob 30. The diameter of the fixing ring is larger than the diameter of the knob 30. When the knob 30 is rotatably arranged in the circular hole 113 of the cover 11, the fixing rings are arranged at the two ends of the knob 30. The two fixing rings abut against the upper and lower surfaces of the cover 11, and the knob 30 is limited on the cover 11 by the two fixing rings.

[0104] The linkage rod 31 is in a columnar structure, one end of the linkage rod 31 is connected to the side of the knob 30 facing the fixing plate 12, and the linkage rod 31 is arranged in a biasing manner, that is, the center line of the linkage rod 31 does not coincide with the center line of the knob 30, the other end of the linkage rod 31 passes through the limiting hole 121 and is inserted into the groove structure on the air pump, and the linkage rod 31 and the groove structure are in clearance fit. When the air pump is in the first position, the linkage rod 31 is located in the middle position of the limiting hole 121, and when the air pump is in the second position or the third position, the linkage rod 31 is located in the end position of the limiting hole 121. In the embodiment, the linkage rod 31 and the knob 30 are connected through the reinforcing ribs 33, in order to make the structure more firm, a plurality of reinforcing ribs 33 are connected between the linkage rod 31 and the knob 30, and the plurality of reinforcing ribs 33 are arranged on the circumferential side of the linkage rod 31. The handle 32 is connected to the top surface of the knob 30 and protrudes from the surface cover 11, when the knob 30 is rotated through the handle 32, the knob 30 drives the linkage rod 31 to rotate, at this time the linkage rod 31 drives the air pump to switch between the first position, the second position and the third position.

[0105] The limiting hole 121 includes a semicircular profile and a protruding portion 126 protruding from the hole wall at the center of the semicircular profile, and the protruding portion 126 protrudes inwardly of the limiting hole 121 away from the hole wall at the center. Preferably, the end of the protruding portion 126 is arc-shaped, and the connection position between the protruding portion 126 and the hole wall of the limiting hole 121 is arc-shaped, so that the limiting hole 121 is ω-shaped. The positions of the two ends of the limiting hole 121 correspond to the second position and the third position respectively. When the linkage rod 31 rotates to the end position of the limiting hole 121, the protruding portion 126 stops the side surface of the linkage rod 31, for example, when the multi-purpose pump is impacted and vibrated by the external environment, the protruding portion 126 limits the linkage rod 31 to shake within the end range of the limiting hole, so that the linkage rod 31 is not easy to slide from the end position of the limiting hole 121 to the middle position of the limiting hole 121, thereby enhancing the limiting of the knob 30. In other embodiments, the limiting hole 121 can also be an arc-shaped strip hole. As shown in FIGS. 3, 5 and 6, in order to limit the air pump, the air pump can be stopped at the first position, the second position or the third position. The switch assembly further includes a limiting piece and a positioning elastic piece 34. The knob 30 is provided with a horizontal accommodating groove 302, the side wall of the knob 30 is provided with a through hole communicating with the accommodating groove 302, the limiting piece is slidingly arranged in the accommodating groove 302 and one end thereof protrudes from the through hole, the side surface of the limiting piece is provided with a limiting portion, the limiting portion is located in the accommodating groove 302 for limiting the limiting piece in the accommodating groove 302, the positioning elastic piece 34 is a spring, the positioning elastic piece 34 is sleeved on the limiting piece, and the two ends of the positioning elastic piece 34 abut against the groove wall of the accommodating groove 302 and the limiting portion respectively, and the above-mentioned end of the limiting piece protrudes outwardly from the accommodating groove 302 through the through hole under the action of the positioning elastic piece 34. In other embodiments, the end of the limiting piece located in the accommodating groove 302 is provided with a hollow groove, one end of the positioning elastic piece 34 is arranged in the hollow groove, and the two ends of the positioning elastic piece 34 abut against the groove wall of the accommodating groove 302 and the groove wall of the hollow groove respectively.

[0106] Specifically, the accommodating groove 302 is an accommodating space formed by a plurality of reinforcing ribs 33. The limiting piece includes a first column 35, a second column 36 and a positioning sheet 37 (i.e. a limiting portion), the first column 35 and the second column 36 are connected to the two ends of the positioning sheet 37 respectively, the diameter of the positioning sheet 37 is greater than the diameter of the through hole, the second column 36 and the positioning sheet 37 are located in the accommodating groove 302, the end of the first column 35 away from the positioning sheet 37 protrudes outwardly from the through hole, the positioning elastic piece 34 is sleeved on the second column 36, and the two ends of the positioning elastic piece 34 abut against the reinforcing rib 33 and the positioning sheet 37 respectively. Since the diameter of the positioning sheet 37 is greater than the diameter of the through hole, the limiting piece is positioned in the accommodating groove 302.

[0107] The inner side surface of the first abutting part 114 is uniformly provided with a plurality of positioning holes 115, which respectively correspond to the first position, the second position and the third position of the air pump. When the air pump is located at the first position, the first section column 35 of the limiting part is inserted into the corresponding positioning hole 115. At this time, the positioning hole 115 limits the rotation of the knob 30 by limiting the limiting part, so as to prevent the air pump from sliding randomly. When the knob 30 is rotated to move the air pump from the first position to the second position, the first section column 35 of the limiting part is first separated from the positioning hole 115 corresponding to the first position. At this time, the limiting part and the positioning elastic part 34 are both extruded. Then, when the air pump moves to the second position, the positioning elastic part 34 releases the elastic force to make the first section column 35 of the limiting part inserted into the positioning hole 115 corresponding to the second position. Similarly, when the air pump moves to the third position, the first section column 35 of the limiting part can be inserted into the positioning hole 115 corresponding to the third position.

[0108] In order to facilitate the first section column 35 to separate from the positioning hole 115, the end of the first section column 35 can be an arc surface head, and the opposite two hole walls of the positioning hole 115 are respectively provided with a transition inclined surface or a transition arc surface.

[0109] As shown in FIGS. 2 and 5, in order to prevent the end cover from swinging left and right when the knob 30 rotates, the opposite two sides of the inner wall of the seat body 10 are respectively provided with a protrusion 107, and the face cover 11 is provided with a limiting groove 116 which is adapted to the two protrusions 107 respectively. When the end cover is arranged in the mounting cavity 101, the two protrusions 107 are respectively inserted into the corresponding limiting grooves 116.

[0110] As shown in FIGS. 2 and 7, the valve assembly includes a sealing valve, a sealing gasket 40 and a sealing elastic part 41. The sealing valve includes a valve body 42, a valve plate 43 and a plunger 44. The valve plate 43 is connected to one end of the valve body 42. The end of the valve body 42 away from the valve plate 43 is used to be inserted into a support 104 in the air inlet hole 102 or the air outlet hole 103 and extend into the mounting cavity 101. The support 104 supports the valve body 42 and guides the valve body 42 to slide along the axis of the air inlet hole 102 or the air outlet hole 103. The plunger 44 is arranged on the side of the valve plate 43 away from the valve body 42. The sealing elastic part 41 is a spring, which is sleeved on the plunger 44, and the two ends of the sealing elastic part 41 abut against the valve plate 43 and the outer cover 105 respectively. The valve plate 43 abuts against the seat body 10 and seals the air inlet hole 102 or the air outlet hole 103 under the action of the sealing elastic part 41. In order to make the valve plate 43 seal the air inlet hole 102 or the air outlet hole 103 tightly, the sealing gasket 40 is sleeved on the valve plate 43, which is used to seal the gap between the valve plate 43 and the seat body 10.

[0111] When the switch assembly is rotated to make the air pump slide to the second position, the air pump abuts against the valve body 42 and pushes the sealing valve to compress the sealing elastic member 41, at this time the sealing valve is away from the seat body 10, the installation cavity 101 is communicated with the outside through the air outlet hole 103; when the switch assembly is rotated to make the air pump slide from the second position to the third position, the air pump is separated from the valve body 42 at the air outlet hole 103, the sealing elastic member 41 pushes the sealing valve to reset and seal the air outlet hole 103, at the same time the air pump abuts against and pushes the sealing valve at the air inlet hole 102 to make the sealing valve away from the seat body 10, at this time the installation cavity 101 is communicated with the outside through the air inlet hole 102.

[0112] As shown in FIGS. 8-10, the air pump comprises a pump shell 50, a motor 51 and a fan blade 52. The pump shell 50 is generally cuboid structure, the motor 51 is installed in the pump shell 50, the fan blade 52 is connected with the motor 51, the two sides of the pump shell 50 in the length direction are respectively provided with an air inlet 501 and an air outlet 502, the fan blade 52 is located at the side close to the air inlet 501, the air inlet 501 and the air outlet 502 correspond to the air inlet hole 102 and the air outlet hole 103 respectively. The pump shell 50 is provided with two flow channel frames 503, the two flow channel frames 503 are respectively located at the air inlet 501 and the air outlet 502, when the air pump is located at the second position or the third position, the flow channel frames 503 at the air inlet 501 and the air outlet 502 abut against and push the valve body 42 at the air inlet hole 102 and the air outlet hole 103 to move away from the seat body 10. In order to seal the gap between the air inlet 501 and the air inlet hole 102 and the gap between the air outlet 502 and the air outlet hole 103, the outer peripheral wall of the air inlet 501 and the air outlet 502 is respectively provided with a sealing ring.

[0113] When the air pump slides along the seat body 10, in order to avoid the air pump shaking in the width direction of the seat body 10, the two sides of the pump shell 50 in the width direction are slidably matched with the cavity wall of the installation cavity 101, for example, the outer side of the pump shell 50 is provided with a horizontally arranged guide strip 504, the guide strip 504 slidably abuts against the cavity wall of the installation cavity 101.

[0114] In order to make the air flow smoothly through the air pump when the air pump works, a plurality of air flow channels 505 are formed on the pump shell 50, the air flow channels 505 are located below the air inlet 501.

[0115] The top surface of the pump shell 50 is provided with a power start key 53, the power start key 53 is used to start the motor 51 to run. In order to start the air pump without opening the end cover, two interval arranged buttons can be arranged on the end cover, when the air pump is located at the first position, the two buttons are respectively located at the two sides of the start power 53, when the air pump is located at the second position, one of the buttons is aligned with the start power 53, at this time the button presses the power start key 53, so that the air pump can be started; similarly, when the air pump is located at the third position, the other button is aligned with the start power 53, the air pump can also be started by pressing the other button.

[0116] The top surface of the pump shell 50 is provided with a groove structure corresponding to the linkage rod 31, specifically a sliding groove 506 extending along the width direction of the pump shell 50. The linkage rod 31 passes through the limiting hole 121 and is slidingly inserted into the sliding groove 506. When the knob 30 rotates together with the linkage rod 31, the position of the linkage rod 31 will move relative to the pump shell 50 during the rotation of the linkage rod 31. Since the linkage rod 31 is inserted into the sliding groove 506 at this time, the linkage rod 31 will slide along the sliding groove 506 and exert a pushing force on the side wall of the sliding groove 506. The force is perpendicular to the side wall of the sliding groove 506, that is, along the length direction of the pump shell 50. The pump shell 50 slides along the seat body 10 under the action of the force. It can be understood that the linkage rod 31 drives the pump shell 50 to move in a manner similar to a cam mechanism.

[0117] The pump shell 50 is also provided with a rotatable handle 507 and a groove for placing the handle 507. The handle 507 facilitates the removal and placement of the air pump from the seat body 10.

[0118] The pump shell 50 is also provided with an illumination button 54 and an indicator light. The bottom of the pump shell 50 is made of a light-transmitting material. The side of the pump shell 50 close to the bottom is provided with a lamp panel. When the air pump is removed from the seat body 10 for separate use, pressing the illumination button 54 can achieve the illumination function.

[0119] The side wall of the pump shell 50 is provided with a power interface 508, which can charge the air pump at any time and anywhere, and also can be used as a mobile power supply for other products.

[0120] In summary, the implementation process of the inner and outer multi-purpose pump of the present embodiment is as follows: open the end cover, place the air pump in the mounting cavity 101 of the seat body 10, then turn over the end cover to cover the seat body 10. At this time, the catch 22 abuts against the guide portion 112 on the end cover, and the catch 22 is retracted into the accommodation cavity 201 under the extrusion of the guide portion 112. When the end cover is completely covered on the seat body 10, the catch 22 protrudes out of the accommodation cavity 201 from the second opening 203 under the elastic force of the first elastic member 23 and is inserted into the clamping groove 111, thereby locking the end cover.

[0121] When inflating the inflatable object, the handle 32 is rotated to drive the knob 30 to rotate the linkage rod 31, and the linkage rod 31 slides in the sliding groove 506 to drive the air pump to move to the second position. At this time, the limiting piece on the knob 30 is inserted into the positioning hole 115 corresponding to the second position, and the flow channel frame 503 at the inflation port 502 of the air pump abuts against the valve body 42 at the air outlet hole 103, so that the valve plate 43 is separated from the seat body 10, thereby making the installation cavity 101 communicate with the outside. The power start button 53 is pressed to start the air pump, and the air flow enters the installation cavity 101 from the air inlet hole 13, enters the air pump from the air inlet port 501 and the gas flow channel 505, and finally enters the inflatable object from the inflation port 502 and the air outlet hole 103.

[0122] When deflating the inflatable object, the handle 32 is rotated to drive the knob 30 to rotate the linkage rod 31, and the linkage rod 31 slides in the sliding groove 506 to drive the air pump to move to the third position. When the flow channel frame 503 at the air inlet port 501 of the air pump abuts against the valve body 42 at the air inlet hole 102, the air inlet hole 102 is opened. The power start button 53 is pressed to start the air pump, and the air flow enters the installation cavity 101 from the air inlet hole 102, enters the air pump from the air inlet port 501, and finally is discharged from the air outlet hole 13. In addition, the air pump can be taken out of the seat body 10 for separate use, thereby meeting the diverse use requirements.

[0123] Second embodiment

[0124] As shown in FIG. 5, the difference between the present embodiment and the first embodiment is that the fixed plate 12 is provided with two start mechanisms, and the start mechanism is an elastic convex contact piece, which includes a connecting piece 124 and a contact head 125. The fixed plate 12 of the end cover is provided with a containing hole, the connecting piece 124 is located in the containing hole, one end of the connecting piece 124 is connected with the fixed plate 12, the other end of the connecting piece 124 is connected with the contact head 125, the contact head 125 is arranged on the side of the connecting plate 124 facing the air pump, the contact head 125 protrudes out of the containing hole, and the connecting piece 124 has a certain elasticity, so that the contact head 125 can move up and down in the vertical direction. The cross-sectional area of the contact head 125 gradually decreases from the end close to the connecting piece 124 to the end away from the connecting piece 124, for example, the contact head 125 can be hemispherical or inverted conical. The two elastic convex contact pieces are arranged along the length direction of the air pump, and when the air pump is located at the first position, the two elastic convex contact pieces are respectively located on the two sides of the power start button 53. When the air pump is located at the second position, the contact head 125 of one of the elastic convex contact pieces abuts against the power start button 53. When the elastic convex contact piece contacts the power start button 53, the contact head 125 presses the power start button 53 downward under the action of the connecting piece 124 due to the elasticity of the connecting piece 124, thereby achieving the purpose of starting the air pump. When the air pump is located at the third position, the contact head 125 of the other elastic convex contact piece abuts against the power start button 53 and starts the air pump.

[0125] For another example, the elastic convex contact can be a spring plunger structure.

[0126] By arranging two elastic convex contacts on the fixing plate 12, when the knob 30 is rotated to move the air pump to the second position or the third position, the elastic convex contacts abut against the starting power source 53 and trigger the air pump to work. Since the operator does not need to additionally operate the air pump to start, the operation is simplified and the operator's operation is facilitated.

[0127] The above embodiments only exemplarily illustrate the principles and effects of the present application, but are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A multi-purpose pump of inside-outside type, characterized in that, The utility model relates to a kind of air pump, including: Shell, the shell includes seat body and end cover, installation cavity is equipped in the seat body, the opposite sides of the seat body are equipped with air inlet and air outlet, the end cover is movably provided in the seat body, for closing or opening the installation cavity; Pump, the pump is slidably provided in the installation cavity between the air inlet and the air outlet, the pump has first position, second position and third position, the second position corresponds the position of the air outlet, the third position corresponds the position of the air inlet, the first position is between the second position and the third position, the pump is used to stop when moving to the first position; Switch assembly, the switch assembly is rotatably provided on the end cover, part of the structure of the switch assembly extends into the installation cavity and is connected with the pump, the switch assembly is used to switch the pump between the first position, the second position and the third position by rotating to realize different working modes.

2. The internal-external multi-purpose pump according to claim 1, wherein The switch assembly includes a knob and a linkage rod; the knob is rotatably mounted on the end cover, one end of the linkage rod is connected with the knob, and the other end of the linkage rod extends into the installation cavity and is inserted into a sliding groove on the upper part of the pump.

3. The internal-external multi-purpose pump according to claim 2, wherein The end cover includes a cover and a fixed plate, the fixed plate is connected to the side of the cover facing the pump, the cover is provided with a circular hole, the fixed plate is provided with a limiting hole opposite to the circular hole, the knob is rotatably mounted in the circular hole, the linkage rod extends into the installation cavity through the limiting hole, and the linkage rod can rotate along an arc in the limiting hole.

4. The internal-external multi-purpose pump according to claim 3, wherein The limiting hole includes a semicircular profile and a protruding portion protruding from the hole wall at the center of the semicircular profile, and the protruding portion protrudes inward away from the hole wall at the center of the limiting hole.

5. The internal-external multi-purpose pump according to claim 4, wherein The end of the protruding portion is arc-shaped, and the connection position between the protruding portion and the hole wall of the limiting hole is arc-shaped.

6. The internal-external multi-purpose pump according to claim 3, wherein The limiting hole is an arc-shaped strip hole.

7. The multi-purpose pump according to any one of claims 2 to 6, wherein The switch assembly further includes a limiting member and a positioning elastic member, the knob is provided with a horizontal accommodating groove, the side wall of the knob is provided with a through hole communicating with the accommodating groove, the limiting member is slidably arranged in the accommodating groove and one end thereof extends outward from the through hole, the limiting member is provided with a limiting portion on the periphery for limiting the movement of the limiting member outward from the through hole, and the positioning elastic member is located in the accommodating groove and is used to push the limiting member to extend one end thereof out of the through hole.

8. The internal-external multi-purpose pump according to claim 1, wherein A power start key is provided on the top of the pump, and two start mechanisms are provided on the end cover at intervals, and the two start mechanisms are respectively opposite to the power start key when the pump is located at the second position and the third position to start the pump.

9. The internal-external multi-purpose pump according to claim 8, wherein The start mechanism includes an elastic convex contact piece, which is used to abut against the power start key when the pump is located at the second position or the third position.

10. The reversible multipurpose pump of claim 8, wherein, The starting mechanism includes a button arranged on the end cover, which is used to press the power starting key when the air pump is located at the second position or the third position.

11. The internal-external multi-purpose pump according to claim 1, wherein One side of the end cover is rotatably connected with the seat body, and the other side of the end cover is provided with a clamping groove. The seat body is provided with a locking assembly, which includes a mounting seat, a push rod and a clamping tongue. The mounting seat is provided with a containing cavity, a first opening and a second opening. The first opening is arranged on the top surface of the mounting seat, and the second opening is arranged on the side of the mounting seat facing the end cover. The clamping tongue is slidingly arranged in the containing cavity, and the clamping tongue protrudes out of the containing cavity from the second opening to be inserted into the clamping groove. The push rod is connected with the clamping tongue and protrudes out of the mounting seat from the first opening, and is used to drive the clamping tongue to slide.

12. The internal-external multi-purpose pump of claim 1, wherein Valve assemblies that can be triggered to open by the air pump are installed at the air inlet hole and the air outlet hole. The outer periphery of the valve disc of the valve assembly is provided with a sealing ring to seal the gap between the valve disc and the air inlet hole or the air outlet hole.

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