Detachable Rotating Connection Power Supply Mechanism and Its Portable Air Pump

Abstract

A detachable rotary connection power supply mechanism includes: a rotary connection power supply base and a rotary connection female disc. The rotary connection power supply base includes a cylinder body, a power supply and a docking component. The power supply is accommodated in the cylinder body. The docking component includes a rotary connection male disc and a clamping ring. The rotary connection male disc is installed on the cylinder body, and the clamping ring is arranged on the outer side wall of the rotary connection male disc. The rotary connection female disc includes a disc body, an arc-shaped limiting block, a stop block and pins. The arc-shaped limiting block is arranged on the inner side wall of the disc body. The stop block, the arc-shaped limiting block and the bottom surface of the disc body jointly enclose an annular locking cavity. The disc body is sleeved on the rotary connection male disc. The clamping ring is used to be clamped into the annular locking cavity, and the pins are used to be electrically connected to the power supply. By setting the rotary connection power supply base and the rotary connection female disc, the power supply structure is optimized, so that the rotary connection power supply base and the rotary connection female disc can be quickly disassembled and assembled, realizing flexible replacement of the power supply and staggering the charging time of the power supply, thereby enabling the portable electric tool to operate continuously for a long time.

Description

Technical Field

[0001] The invention relates to the field of electric tools, and in particular to a detachable and screw-connected power supply mechanism. Background Art

[0002] Portable power tools are power tools equipped with rechargeable battery packs. The battery packs are used to supply the power tools with the electrical energy required for operation. This allows many processing tools to break free from the limitations of power cords and enable them to be processed far away from a fixed power source, making processing more flexible and providing convenience for users.

[0003] However, the main factor restricting the development of portable power tools is the battery pack. The overall capacity of the battery pack limits the length of time the portable power tools can be used. Under conditions that require continuous processing, the battery pack in the portable power tool is easily exhausted and needs to be recharged before it can be used again. In other words, portable power tools are not suitable for conditions that require long-term continuous processing. In the absence of further breakthroughs in battery capacity technology, how to optimize the structure of portable power tools so that they can cope with long-term continuous processing is a problem that electrical tool designers need to solve. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a detachable screw-on power supply mechanism and a portable air pump thereof, to optimize the power supply structure so that it has the characteristics of quick disassembly and assembly, flexible replacement of power supply, and staggered charging time of power supply, thereby solving the problem that portable power tools cannot be used continuously for a long time.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A detachable rotary power supply mechanism comprises: a rotary power supply seat and a rotary mother plate;

[0007] The rotary power supply seat includes a cylinder, a power source and a docking assembly, wherein the power source is accommodated in the cylinder, and the docking assembly includes a rotary sub-disc and a clamping ring, wherein the rotary sub-disc is mounted on the cylinder, and the clamping ring is arranged on the outer side wall of the rotary sub-disc, and the clamping ring is located on one end of the rotary sub-disc away from the power source;

[0008] The rotary connection female disk includes a disk body, an arc-shaped limiting block, a stop block and pins. The arc-shaped limiting block is arranged on the inner side wall of the disk body. There is a gap between the arc-shaped limiting block and the bottom surface of the disk body. The stop block is arranged at one end of the arc-shaped limiting block, and the stop block is located between the arc-shaped limiting block and the bottom surface of the disk body. The stop block, the arc-shaped limiting block and the bottom surface of the disk body jointly enclose an annular locking cavity. The disk body is sleeved on the rotary connection male disk. The clamping ring is used to be clamped into the annular locking cavity. The pins are installed on the disk body, and the pins are used for electrically connecting with the power supply.

[0009] In one embodiment, a spherical positioning protrusion is arranged on the bottom surface of the disk body, and the spherical positioning protrusion is used to abut against the end surface of the rotary connection male disk away from the power supply.

[0010] In one embodiment, an elastic deformation part is arranged on the disk body, and the spherical positioning protrusion is located on the elastic deformation part.

[0011] In one embodiment, the pins include a positive conductive elastic sheet and a negative conductive elastic sheet. The positive conductive elastic sheet and the negative conductive elastic sheet are installed at intervals on the bottom surface of the disk body, and the positive conductive elastic sheet is located at the central position of the disk body.

[0012] In one embodiment, the positive conductive elastic sheet includes an elastic part, a transition part and a conductive part. The elastic part and the conductive part are respectively located at both ends of the transition part. The transition part is arranged on the bottom surface of the disk body. The elastic part is located inside the disk body, and the elastic part is used for electrically connecting with the power supply.

[0013] In one embodiment, a clearance hole and an oblong hole are formed on the rotary connection male disk. The clearance hole is located at the central position of the rotary connection male disk. The positive conductive elastic sheet passes through the clearance hole, and the negative conductive elastic sheet passes through the oblong hole.

[0014] In one embodiment, the docking assembly further includes a conductive sheet and an insulating protection cover. The conductive sheet is accommodated inside the rotary connection male disk. The insulating protection cover is installed on the rotary connection male disk. The conductive sheet is located between the bottom surface of the rotary connection male disk and the insulating protection cover, and the conductive sheet is electrically connected with the power supply.

[0015] In one embodiment, a foolproof groove is formed on the rotary connection male disk. An anti-misalignment protrusion is arranged on the outer side wall of the insulating protection cover, and the anti-misalignment protrusion is accommodated in the foolproof groove.

[0016] In one embodiment, two clamping rings are provided, and the two clamping rings are spaced apart on the outer wall of the rotating sub-disk, two arc-shaped limit blocks are provided, and two stop blocks are provided. The two arc-shaped limit blocks and the two stop blocks are respectively connected to two annular locking cavities surrounded by the bottom surface of the disk body, and the two clamping rings are correspondingly inserted into the two annular locking cavities.

[0017] A portable air pump, the above-mentioned detachable screw-on power supply mechanism also includes a shell and an air pump assembly, the air pump assembly is accommodated in the shell, the screw-on mother disk is arranged at one end of the shell, and the screw-on power supply seat is electrically connected to the air pump assembly.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] The above-mentioned detachable screw-on power supply mechanism optimizes the power supply structure by providing a screw-on power supply seat and a screw-on mother disk, so that the screw-on power supply seat and the screw-on mother disk can be quickly disassembled and assembled, thereby realizing flexible replacement of the power supply and staggering the charging time of the power supply, thereby enabling the portable power tool to operate continuously for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of a detachable rotary power supply mechanism in one embodiment of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a spin-on female disc in one embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of a rotating sub-disk in one embodiment of the present invention;

[0024] Figure 4 Based Figure 3 A structural schematic diagram of the rotating sub-disk from another perspective;

[0025] Figure 5 It is a structural schematic diagram of a rotating sub-disc and a rotating mother disc in an embodiment of the present invention when they are in an unlocked state;

[0026] Figure 6 It is a structural schematic diagram of a rotating sub-disc and a rotating mother disc in an embodiment of the present invention when they are in a locked state;

[0027] Figure 7 The structural schematic diagram of a portable inflator in an embodiment of the present invention;

[0028] Figure 8 The internal structural schematic diagram of a portable inflator in an embodiment of the present invention. Detailed implementation manners

[0029] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figure 1 , a detachable screw-connectable power supply mechanism 10 includes: a screw-connectable power supply base 100 and a screw-connectable female disc 200. The screw-connectable power supply base 100 and the screw-connectable female disc 200 are detachably connected. The screw-connectable female disc 200 is used to be installed on a portable electric tool. The screw-connectable power supply base 100 is inserted into the screw-connectable female disc 200, and the power supply in the screw-connectable power supply base 100 is electrically connected to the portable electric tool through the screw-connectable female disc 200. By rotating the screw-connectable power supply base 100, the screw-connectable power supply base 100 can be locked on the screw-connectable female disc 200. When the power supply is exhausted, just rotate the screw-connectable power supply base 100 in the reverse direction to unlock it, then the screw-connectable power supply base 100 can be removed from the screw-connectable female disc 200, and a new screw-connectable power supply base 100 can be re-screwed with the screw-connectable female disc 200. The removed screw-connectable power supply base 100 is charged. By replacing the screw-connectable power supply base 100 for power supply, the portable electric tool can achieve continuous operation, and the function of quickly replacing the power supply is realized through the screw-connecting structure of the screw-connectable power supply base 100 and the screw-connectable female disc 200, thereby improving the processing efficiency.

[0033] Please refer to Figure 1 and Figure 3 , the rotary connection power supply base 100 includes a cylinder body 110, a power supply 120 and a docking component 130. The power supply 120 is accommodated in the cylinder body 110. The docking component 130 includes a rotary connection sub-disk 131 and a clamping ring 132. The rotary connection sub-disk 131 is installed on the cylinder body 110, and the clamping ring 132 is arranged on the outer side wall of the rotary connection sub-disk 131, and the clamping ring 132 is located at one end of the rotary connection sub-disk 131 away from the power supply 120; specifically, the cylinder body 110 is a hollow structure with one end open, the power supply 120 is accommodated inside the cylinder body 110, the rotary connection sub-disk 131 is arranged on the cylinder body 110, and the rotary connection sub-disk 131 is located at the opening position of the cylinder body 110, and the clamping ring 132 arranged on the outer side wall of the rotary connection sub-disk 131 is located outside the cylinder body 110.

[0034] Further, please refer to Figure 1 and Figure 3 , the docking component 130 further includes a conductive sheet 133 and an insulating protection cover 134. The conductive sheet 133 is accommodated in the rotary connection sub-disk 131, the insulating protection cover 134 is installed on the rotary connection sub-disk 131, the conductive sheet 133 is located between the bottom surface of the rotary connection sub-disk 131 and the insulating protection cover 134, the conductive sheet 133 is electrically connected to the power supply 120, an anti-fooling groove is formed on the rotary connection sub-disk 131, and an anti-misalignment protrusion 134a is arranged on the outer side wall of the insulating protection cover 134. The anti-misalignment protrusion 134a is accommodated in the anti-fooling groove. By the cooperation of the anti-misalignment protrusion 134a and the anti-fooling groove, it is possible to prevent the phenomenon that the anti-misalignment protrusion 134a is installed reversely or wrongly when assembling the detachable rotary connection power supply mechanism 10, which is convenient for subsequent maintenance operations on the rotary connection power supply base 100.

[0035] Please refer to Figure 1 and Figure 2, The rotary connection female disk 200 includes a disk body 210, an arc-shaped limiting block 220, a stop block 230, and pins 240. The arc-shaped limiting block 220 is disposed on the inner sidewall of the disk body 210. There is a gap between the arc-shaped limiting block 220 and the bottom surface of the disk body 210. The stop block 230 is disposed at one end of the arc-shaped limiting block 220, and the stop block 230 is located between the arc-shaped limiting block 220 and the bottom surface of the disk body 210. The stop block 230, the arc-shaped limiting block 220, and the bottom surface of the disk body 210 jointly enclose an annular locking cavity 250. The disk body 210 is sleeved on the rotary connection sub-disk 131. The clamping ring 132 is used to be snapped into the annular locking cavity 250. The pins 240 are installed on the disk body 210, and the pins 240 are used for electrical connection with the power supply 120. Specifically, the rotary connection female disk 200 is a hollow structure with one end open. The arc-shaped limiting block 220 and the stop block 230 are disposed on the inner sidewall of the rotary connection female disk 200, and the stop block 230, the arc-shaped limiting block 220, and the bottom surface of the disk body 210 jointly enclose the annular locking cavity 250 for accommodating the rotary connection sub-disk 131. And the diameter of the position where the arc-shaped limiting block 220 is located on the inner sidewall of the disk body 210 is smaller than the inner diameter of the disk body 210 itself. Further, the inner radius of the disk body 210 is equal to the distance from the clamping ring 132 to the central position of the rotary connection sub-disk 131. Thus, when the rotary connection power supply base 100 is inserted into the rotary connection female disk 200, the clamping ring 132 on the outer sidewall of the rotary connection sub-disk 131 fits against the inner sidewall of the disk body 210 and slides along the inner sidewall of the disk body 210 until the end surface of the rotary connection sub-disk 131 abuts against the bottom surface of the disk body 210. At this time, twist the rotary connection power supply base 100 to make the rotary connection power supply base 100 rotate relative to the rotary connection female disk 200. The clamping ring 132 on the rotary connection sub-disk 131 rotates accordingly and slides into the annular locking cavity 250. When the rotary connection power supply base 100 rotates a certain angle, the stop block 230 abuts against the clamping ring 132. At this time, the rotary connection power supply base 100 rotates in place, and the clamping ring 132 is snapped into and slides into the annular locking cavity 250, thereby fixing the rotary connection power supply base 100 on the rotary connection female disk 200 and abutting the power supply 120 of the rotary connection power supply base 100 against the pins 240 on the rotary connection female disk 200 to make the pins 240 electrically connected to the power supply 120.

[0036] Further, please refer to Figure 2 and Figure 3A spherical positioning protrusion 211 is provided on the bottom surface of the disk body 210 , and the spherical positioning protrusion 211 is used to abut against the end surface of the rotating disk 131 away from the power supply 120 . An elastic deformation portion 212 is provided on the disk body 210 , and the spherical positioning protrusion 211 is located on the elastic deformation portion 212 . The spherical positioning protrusion 211 is used to position the rotating sub-disk 131 to prevent the rotating power supply socket 100 fixed on the rotating mother disk 200 from loosening or reversing. Before the rotating power supply socket 100 is rotated into place, the end face of the rotating sub-disk 131 will abut against the spherical positioning protrusion 211, and generate a pressure to push the spherical protrusion away from the end face of the rotating sub-disk 131. At this time, the elastic deformation part 212 is deformed under the force, but other parts of the bottom surface of the disk body 210 will not be deformed due to the pressure. That is, by setting the elastic deformation part 212, all the pressure is concentrated on the elastic deformation part 212, preventing the components installed on other parts of the bottom surface of the disk body 210 from being deformed due to pressure, resulting in misalignment of the components and damage to other components on the rotating mother disk 200, thereby making the detachable rotating power supply mechanism 10 more reliable.

[0037] It should be noted that if the angle of the rotary power supply socket 100 is not correct when it is inserted into the rotary mother disk 200, the arc-shaped limit block 220 on the disk body 210 will abut against the clamping ring 132 and prevent the rotary power supply socket 100 from approaching the bottom surface of the rotary mother disk 200. The rotary power supply socket 100 needs to be rotated so that the clamping ring 132 and the arc-shaped limit block 220 are offset, and the rotary power supply socket 100 can continue to approach the bottom surface of the rotary mother disk 200. That is, the arc-shaped limit block 220 also has a guiding function for the assembly of the rotary power supply socket 100 on the rotary mother disk 200, thereby assisting the user in loading and unloading the rotary power supply socket 100 and preventing the portable power tool from failing to operate normally due to installation errors.

[0038] During actual use, the screw-on mother disk 200 is installed on the portable power tool, the pin 240 on the screw-on mother disk 200 is electrically connected to the portable power tool, the screw-on power supply socket 100 is screwed onto the screw-on mother disk 200, and the power supply 120 on the screw-on power supply socket 100 is connected to the portable power tool through the pin 240 to provide power for the portable power tool.

[0039] For further information, see Figure 2 and Figure 7The pin 240 includes a positive conductive spring 241 and a negative conductive spring 242 . The positive conductive spring 241 and the negative conductive spring 242 are installed on the bottom surface of the disk 210 at intervals, and the positive conductive spring 241 is located at the center of the disk 210 . Among them, the positive conductive spring clip 241 includes an elastic portion 241a, a transition portion 241b and a conductive portion 241c, the elastic portion 241a and the conductive portion 241c are respectively located at two ends of the transition portion 241b, the transition portion 241b is arranged on the bottom surface of the disk body 210, the elastic portion 241a is located in the disk body 210, and the elastic portion 241a is used to be electrically connected to the power supply 120. In order to ensure structural consistency, the structure of the negative conductive spring clip 242 is the same as that of the positive conductive spring clip 241. An air avoidance hole 131a and a waist-shaped hole 131b are opened on the rotating sub-disk 131. The air avoidance hole 131a is located at the center of the rotating sub-disk 131. The positive conductive spring clip 241 is penetrated by the air avoidance hole 131a, and the negative conductive spring clip 242 is penetrated by the waist-shaped hole 131b. The positive conductive spring 241 and the negative conductive spring 242 are disposed on the bottom surface of the disk 210, and are used to abut against the positive and negative electrodes of the power source 120, respectively, so as to connect the power source 120 to the internal circuit of the portable power tool to provide electrical energy. Preferably, the positive conductive spring 241 and the negative conductive spring 242 are made of copper sheets.

[0040] For further information, see Figure 1 and Figure 7 There are two snap rings 132, which are arranged at intervals on the outer wall of the rotating sub-disk 131, two arc-shaped limit blocks 220, and two stop blocks 230. The two arc-shaped limit blocks 220 and the two stop blocks 230 are respectively connected to the two annular locking cavities 250 on the bottom surface of the disk body 210, and the two snap rings 132 are correspondingly inserted into the two annular locking cavities 250. When two snap rings 132 are provided and the rotating power supply seat 100 and the rotating mother disk 200 are connected to each other by using the two snap rings 132 and the two annular locking cavities 250 respectively, the stress generated during the assembly process and the external force generated during the use of the product to drive the rotating power supply seat 100 and the rotating mother disk 200 to separate can be distributed to the two snap rings 132, so as to reduce the wear of the snap rings 132 and improve the service life and structural stability of the detachable rotating power supply mechanism 10.

[0041] Preferably, please also refer to Figure 5 and Figure 6, the included angle between the two end faces of each snap ring 132 is 90°, and the included angle between two adjacent end faces on the two snap rings 132 is 90°. Correspondingly, the included angle between the two end faces of the arc-shaped limiting block 220 is 90°. Therefore, after the rotary power supply base 100 is rotated 90° relative to the rotary female disk 200, the snap ring 132 can just be screwed into the annular locking cavity 250, and the snap ring 132 is just within the blocking range of the arc-shaped limiting block 220. When it is necessary to remove the rotary power supply base 100 from the rotary female disk 200, reversing 90° can make the two snap rings 132 leave the two annular locking cavities 250 respectively, that is, the rotary sub-disk 131 and the rotary female disk 200 are in an unlocked state, and the rotary power supply base 100 is pulled out from the rotary female disk 200.

[0042] Further, please refer to Figure 4 , the thickness of the snap ring 132 gradually increases from the first end of the snap ring 132 to the second end of the snap ring 132. When assembling the detachable rotary power supply mechanism 10, the rotary power supply base 100 is inserted into the rotary female disk 200, and the rotary power supply base 100 is twisted so that the first end of the snap ring 132 enters the annular locking cavity 250 first. As the rotation angle of the rotary power supply base 100 becomes larger, the second end of the snap ring 132 gradually approaches the annular locking cavity 250, and the outer side wall of the snap ring 132 begins to abut against the inner side wall of the annular locking cavity 250, that is, the end face of the arc-shaped limiting block 220. When the first end of the snap ring 132 abuts against the stop block 230, the first end of the snap ring 132 enters the annular locking cavity 250, and at this time, the outer side wall of the snap ring 132 abuts against the end face of the arc-shaped limiting block 220. A large frictional force is generated between the end face of the arc-shaped limiting block 220 and the outer side wall of the snap ring 132, preventing the rotary power supply base 100 from reversing and falling off the rotary female disk 200 when an external force acts on the rotary power supply base 100 during use, and using the frictional force to assist the connection between the rotary power supply base 100 and the rotary female disk 200 to be more firm.

[0043] Next, in combination with Figure 5 and Figure 6 , the working principle of the above detachable rotary power supply mechanism 10 will be introduced:

[0044] First, the rotary female disk 200 is installed on the portable electric tool, and the motor of the portable electric tool is electrically connected to the pin 240.

[0045] Next, the rotary power supply socket 100 is set on the rotary mother disk 200, and the rotary sub-disk 131 on the rotary power supply socket 100 is inserted into the disk body 210 of the rotary mother disk 200, so that the end face of the rotary sub-disk 131 abuts against the bottom surface of the disk body 210. If the clamping ring 132 on the rotary sub-disk 131 contacts the arc-shaped limit block 220 on the inner wall of the disk body 210 during the insertion process, causing the end face of the rotary sub-disk 131 to abut against the bottom surface of the disk body 210, it is necessary to rotate the rotary power supply socket 100 so that the clamping ring 132 and the arc-shaped limit block 220 are offset so that the end face of the rotary sub-disk 131 abuts against the bottom surface of the disk body 210. At this time, the pin 240 installed on the disk body 210 is electrically connected to the power supply 120 on the rotary power supply socket 100, thereby electrically connecting the portable power tool to the power supply 120. It should be noted that at this time, the rotary power supply seat 100 and the rotary mother plate 200 are not locked, that is, the rotary sub-plate and the rotary mother plate are in an unlocked state (such as Figure 5 shown).

[0046] Then, the rotating power supply seat 100 is twisted to make the rotating sub-disc 131 rotate relative to the rotating mother disk 200, and the clamping ring 132 located on the outer wall of the rotating sub-disc 131 rotates accordingly. The first end of the clamping ring 132 first enters the annular locking cavity 250, and the rotating power supply seat 100 is continued to be twisted until the first end of the clamping ring 132 abuts against the stopper 230. At this time, the second end of the clamping ring 132 also enters the annular locking cavity 250, that is, the clamping ring 132 is completely accommodated in the annular locking cavity 250. At this time, the rotating power supply seat 100 and the rotating mother disk 200 are in a locked state, that is, the rotating sub-disc and the rotating mother disk are in a locked state (such as Figure 6 As shown), the spin-on power supply seat 100 is fixed on the spin-on mother disk 200.

[0047] Finally, start the portable power tool for processing. When the power stored in the power supply 120 in the rotary power supply socket 100 is exhausted, twist the rotary power supply socket 100 again to reverse the rotary sub-disk 131 relative to the rotary mother disk 200, and the second end of the clamping ring 132 leaves the annular locking cavity 250 first. Continue to twist the rotary power supply socket 100 until the first end of the clamping ring 132 also leaves the annular locking cavity 250. At this time, the rotary power supply socket 100 and the rotary mother disk 200 are restored to the unlocked state. The rotary power supply socket 100 is pulled out of the rotary mother disk 200 and replaced with a new rotary power supply socket 100 to continue using the portable power tool. The exhausted rotary power supply socket 100 is charged, and the rotary power supply socket 100 is used alternately to stagger the charging time of the rotary power supply socket 100, thereby overcoming the problem that the portable power tool cannot be used continuously for a long time.

[0048] The above detachable screw-connectable power supply mechanism 10 optimizes the power supply structure by providing a screw-connectable power supply base 100 and a screw-connectable female disc 200, enabling quick disassembly and assembly between the screw-connectable power supply base 100 and the screw-connectable female disc 200, realizing flexible replacement of the power source 120, staggering the charging time of the power source 120, and solving the problem that portable electric tools cannot be used continuously for a long time.

[0049] The working principle of the above detachable screw-connectable power supply mechanism 10 will be further introduced below in conjunction with specific embodiments:

[0050] Please refer to Figure 7 and Figure 8 A portable air pump 20, the above detachable screw-connectable power supply mechanism 10 further includes a housing 300 and an air pump assembly 400. The air pump assembly 400 is accommodated in the housing 300. The screw-connectable female disc 200 is provided at one end of the housing 300, and the screw-connectable power supply base 100 is electrically connected to the air pump assembly 400.

[0051] Please refer to Figure 7 and Figure 8 The housing 300 is a hollow structure with one end open. The air pump assembly 400 is provided in the housing 300. The disc body 210 is installed on the housing 300, and the disc body 210 is located at the opening position of the housing 300. The pins 240 are electrically connected to the air pump assembly 400.

[0052] Please refer to Figure 7 and Figure 8 The air pump assembly 400 includes a motor 410, a driving gear 420, an end face gear 430, a piston rod 440, a pump body 450, an air nozzle 460 and a check valve 470. The pump body 450 is accommodated in the housing 300. The motor 410 is installed at one end of the pump body 450. The driving gear 420 is provided at the output end of the motor 410. The end face gear 430 meshes with the driving gear 420, and an eccentric shaft 480 is provided on the end face gear 430; a driving hole is opened at the first end of the piston rod 440, a sealing ring is provided at the second end of the piston rod 440, the piston rod 440 passes through the pump body 450, and the second end of the piston rod 440 is located in the inner cavity of the pump body 450. The eccentric shaft 480 passes through the driving hole, and the diameter of the driving hole is larger than the diameter of the eccentric shaft 480. The motor 410 is used to drive the piston rod 440 to reciprocate in the direction close to or away from the pump body 450, that is, the motor 410 drives the piston rod 440 to perform a piston motion. An exhaust hole 451 is opened on the end face of the pump body 450, an air inlet hole 452 is opened on the side wall of the pump body 450. The check valve 470 is accommodated in the housing 300 and is communicated with the air inlet hole 452, and the air nozzle 460 is communicated with the exhaust hole 451.

[0053] The rotary power supply base 100 is arranged on the rotary female disc 200, and the power supply 120 on the rotary power supply base 100 is electrically connected to the motor 410 on the air pump assembly 400.

[0054] Please also refer to Figure 7 and Figure 8 , when starting the portable air pump 20, the power supply 120 supplies electric energy to the motor 410, the motor 410 drives the driving gear 420 to rotate, and the face gear 430 meshed with the driving gear 420 rotates accordingly. When the eccentric shaft 480 on the face gear 430 rotates around the center line of the face gear 430, it will abut against the inner wall of the driving hole and apply a thrust to the inner wall of the driving hole, thereby driving the piston rod 440 to reciprocate in the direction close to or away from the pump body 450, that is, performing a piston motion. When the face gear 430 rotates one circle, the piston rod 440 completes one piston motion, that is, the second end of the piston rod 440 first performs a pumping action, and a suction action when returning to the initial position. When the piston rod 440 performs the pumping action, the second end of the piston rod 440 moves in the direction close to the pump body 450, compresses the gas in the pump body 450 towards the exhaust hole 451, and sprays out at the air nozzle 460; when the piston rod 440 performs the suction action, the second end of the piston rod 440 moves in the direction away from the pump body 450, external air enters the one-way valve 470, and flows into the pump body 450 through the air inlet hole 452, and sprays out from the air nozzle 460 during the next pumping action. Repeating the above actions can realize operations such as inflating a tire.

[0055] It should be noted that the above-mentioned portable air pump 20 is relatively small in size and can be directly arranged on a bicycle or carried with you. The power supply on it adopts a detachable rotary power supply mechanism 10. When charging is required, just rotate the rotary power supply base 100, and the rotary power supply base 100 can be separated from the housing 300. Then remove the rotary power supply base 100 for charging. Its disassembly and assembly process is simple and convenient, and no professional assembly experience is required.

[0056] The above embodiments only express several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A portable air pump, including a detachable screwed power supply mechanism, and the detachable screwed power supply mechanism includes: A screwed power supply base, the screwed power supply base includes a cylinder, a power supply and a docking component. The power supply is accommodated in the cylinder. The docking component includes a screwed sub-disk and a clamping ring. The screwed sub-disk is installed on the cylinder, and the clamping ring is arranged on the outer side wall of the screwed sub-disk, and the clamping ring is located at one end of the screwed sub-disk away from the power supply; A screwed mother disk, the screwed mother disk includes a disk body, an arc-shaped limiting block, a stop block and pins. The arc-shaped limiting block is arranged on the inner side wall of the disk body. There is a gap between the arc-shaped limiting block and the bottom surface of the disk body. The stop block is arranged at one end of the arc-shaped limiting block, and the stop block is located between the arc-shaped limiting block and the bottom surface of the disk body. The stop block, the arc-shaped limiting block and the bottom surface of the disk body jointly enclose an annular locking cavity. The disk body is sleeved on the screwed sub-disk, and the clamping ring is used to be clamped into the annular locking cavity. The pins are installed on the disk body, and the pins are used to be electrically connected to the power supply; A spherical positioning protrusion is arranged on the bottom surface of the disk body, and the spherical positioning protrusion is used to abut against the end surface of the screwed sub-disk away from the power supply; An elastic deformation part is arranged on the disk body, and the spherical positioning protrusion is located on the elastic deformation part; The docking component further includes a conductive sheet and an insulating protection cover. The conductive sheet is accommodated in the screwed sub-disk, and the insulating protection cover is installed on the screwed sub-disk. The conductive sheet is located between the bottom surface of the screwed sub-disk and the insulating protection cover, and the conductive sheet is electrically connected to the power supply; An anti-fooling groove is opened on the screwed sub-disk, and an anti-misalignment protrusion is arranged on the outer side wall of the insulating protection cover, and the anti-misalignment protrusion is accommodated in the anti-fooling groove; The portable air pump further includes a housing and an air pump component. The air pump component is accommodated in the housing. The screwed mother disk is arranged at one end of the housing, and the screwed power supply base is electrically connected to the air pump component.

2. The portable air pump according to claim 1, wherein The pins include a positive conductive elastic sheet and a negative conductive elastic sheet. The positive conductive elastic sheet and the negative conductive elastic sheet are installed on the bottom surface of the disk body at intervals, and the positive conductive elastic sheet is located at the central position of the disk body.

3. The portable air pump according to claim 2, wherein, The positive conductive elastic sheet includes an elastic part, a transition part and a conductive part. The elastic part and the conductive part are respectively located at both ends of the transition part. The transition part is arranged on the bottom surface of the disk body. The elastic part is located in the disk body, and the elastic part is used to be electrically connected to the power supply.

4. The portable air pump according to claim 3, wherein An avoidance hole and a kidney-shaped hole are opened on the screwed sub-disk. The avoidance hole is located at the central position of the screwed sub-disk. The positive conductive elastic sheet passes through the avoidance hole, and the negative conductive elastic sheet passes through the kidney-shaped hole.

5. The portable air pump according to claim 1, characterized in that, There are two snap rings, and the two snap rings are spaced apart and arranged on the outer side wall of the rotary joint sub-disk. There are two arc-shaped limit blocks and two stop blocks. The two arc-shaped limit blocks and the two stop blocks respectively enclose two annular locking cavities with the bottom surface of the disk body, and the two snap rings are respectively snapped into the two annular locking cavities in a one-to-one correspondence.

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