Electric inflator pump
By designing the double-layer housing structure and integrated circuit board of the electric inflatable pump, the problems of messy internal wiring and difficult to hold heat are solved, and a simpler and more efficient air pump design is achieved.
Patent Information
- Application Number
- CN202421344618.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-06-12
AI Technical Summary
The existing electric inflatable pumps are difficult to hold due to the messy internal wiring, complex structure, and heat generated during use, which affects the user experience.
An electric inflatable pump is designed, with a double-layer structure inside and outside the shell, with a cylinder and a motor in the inner shell, which drives the piston movement through the transmission structure; a circuit board is installed between the outer shell and the inner shell, integrating pressure sensors and other electronic components to avoid complex wiring; at the same time, ventilation grilles and ventilation fans are installed at the upper and lower ends of the shell to increase the heat dissipation effect, and a gap is left between the inner and outer shells to isolate heat conduction.
The interior of the shell is simplified and the wiring is messy; the improved heat dissipation design reduces heating problems and increases grip comfort; the overall structure is simple and the size is small, which improves the user experience.
Smart Images
Figure CN222962998U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of air pumps, and in particular to an electric air pump. Background Art
[0002] Electric air pumps are widely used in daily life and are often used to inflate car tires, various balls, and inflatable products. They are widely praised because they are more labor-saving and more efficient than traditional air pumps.
[0003] However, the electric air pumps currently on the market have the problem of messy internal wiring due to the presence of electronic components. In addition, the existing air pumps have a complex structure and a large size. They also generate heat during use, making it difficult for users to hold them, which seriously affects the user experience. Utility Model Content
[0004] The present application provides an electric air pump to at least solve the technical problems in the prior art of messy internal wiring, complex structure, and heat generation and difficulty in holding during use.
[0005] In order to achieve the above-mentioned purpose, the present application provides an electric air pump, including a shell, the shell including an inner shell with an accommodating space and an outer shell arranged outside the inner shell, a cylinder is arranged inside the inner shell, the cylinder includes a cylinder body, a first air outlet and a second air outlet, the first air outlet is connected to an air outlet pipe, a movable piston is arranged inside the cylinder body, the piston is connected to a motor through a transmission structure, and the motor can drive the piston to reciprocate in the cylinder body; an opening for exposing the second air outlet is arranged on the inner shell, a circuit board fixed at the opening is arranged between the inner shell and the outer shell, the circuit board is tightly matched with at least the second air outlet and a pressure sensor is integrally arranged at the matching position with the second air outlet.
[0006] In some embodiments, the transmission structure includes a first transmission gear, a second transmission gear and a connecting rod, the first transmission gear rotates synchronously with the motor output end, the second transmission gear is meshed with the first transmission gear, one end of the connecting rod is connected to the piston, and the other end is rotatable and eccentrically arranged on the second transmission gear.
[0007] In some embodiments, the cylinder is provided with a connecting portion extending toward the motor, the second transmission gear is rotatably provided on the connecting portion, and a rotating bearing coaxially arranged with the second transmission gear is positioned on the connecting portion.
[0008] In some embodiments, the rotation axis of the first transmission gear is arranged perpendicular to the rotation axis of the second transmission gear.
[0009] In some of these embodiments, a connecting member is fixedly connected to one end of the motor near the connecting portion, and the connecting member is fixedly connected to the connecting portion.
[0010] In some of these embodiments, a limiting gasket is sleeved on the rotating shaft at one end of the connecting rod that is cooperatively connected to the second transmission gear, and the limiting gasket is arranged on the side of the rotating shaft away from the second transmission gear.
[0011] In some of these embodiments, ventilation grilles with openings are respectively arranged at the upper and lower ends of the housing, and a rotatable ventilation fan is connected to the motor on the side near the ventilation grilles.
[0012] In some of these embodiments, a flexible buffer sleeve is sleeved outside the motor.
[0013] In some of these embodiments, the circuit board passes through the inner housing and is fixedly connected to the cylinder.
[0014] In some of these embodiments, a gap is left between the inner housing and the outer housing.
[0015] According to the above content, the beneficial effects of the present application are as follows:
[0016] 1. Electronic components such as pressure sensors are directly integrated onto the circuit board, avoiding complex wire routing inside the housing and making the interior of the housing simple.
[0017] 2. Ventilation grilles are arranged at the upper and lower ends of the housing, and a ventilation fan is arranged at the lower end inside the housing, which can not only achieve the ventilation effect but also accelerate heat dissipation.
[0018] 3. A gap is provided between the inner housing and the outer housing, which can isolate heat conduction and prevent it from being difficult to hold due to heat generation.
[0019] 4. The overall structure of the air pump device is concise and its volume is small. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:
[0021] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;
[0022] Figure 2 is a schematic diagram of the internal structure of an embodiment of the present application;
[0023] Figure 3 is a schematic diagram of the circuit board structure of an embodiment of the present application;
[0024] Figure 4 It is an exploded view of the overall structure of an embodiment of the present application;
[0025] Figure 5 It is a schematic diagram of the cooperation between the cylinder and the motor in an embodiment of the present application;
[0026] Figure 6 It is a schematic diagram of the cooperation between the cylinder and the motor in an embodiment of the present application;
[0027] Figure 7 It is an exploded view of the internal structure of an embodiment of the present application.
[0028] Explanation of reference numerals: housing 1; inner housing 1.1; outer housing 1.2; avoidance groove 1.2.1; ventilation grille 1.3; cylinder 2; connecting portion 2.1; cylinder block 2.2; first air outlet 2.3; second air outlet 2.4; piston 2.5; one-way valve 2.6; motor 3; connecting member 3.1; ventilation fan 3.2; buffer sleeve 3.3; air outlet pipe 4; circuit board 5; display screen 5.1; button 5.2; LED lamp 5.3; first transmission gear 6.1; second transmission gear 6.2; connecting rod 6.3; limit gasket 6.4; rotating bearing 6.5; power supply 7. Detailed implementation manners
[0029] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the present application will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided in the present application without making creative efforts belong to the scope of protection of the present application. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood that the content disclosed in the present application is insufficient.
[0030] In the present application, referring to "embodiment" means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.
[0031] Unless otherwise defined, the technical terms or scientific terms involved in this application shall have the ordinary meanings understood by those with ordinary skills in the technical field to which this application belongs. The words such as "a", "an", "one kind", "the" and the like involved in this application do not indicate a quantity limitation and may represent a singular or plural number. The terms "include", "comprise", "have" and any variations thereof involved in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may further include unlisted steps or units, or may further include other steps or units inherent to these processes, methods, products or devices. The words such as "connect", "be connected", "couple" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application means greater than or equal to two. "And / or" describes the association relationship of associated objects and indicates that three relationships may exist. For example, "A and / or B" may represent: A exists alone, A and B exist simultaneously, and B exists alone. The terms "first", "second", "third" and the like involved in this application are only used to distinguish similar objects and do not represent a specific order for the objects.
[0032] This application provides an electric air pump, which includes a housing. The housing includes an inner housing having an accommodation space and an outer housing sleeved outside the inner housing. A cylinder is arranged inside the inner housing. The cylinder includes a cylinder body, a first air outlet and a second air outlet. The first air outlet is connected with an air outlet pipe. A movable piston is arranged inside the cylinder body. The piston is in transmission connection with a motor through a transmission structure. The motor can drive the piston to reciprocate in the cylinder body. An opening for exposing the second air outlet is arranged on the inner housing. A circuit board fixed at the opening is arranged between the inner housing and the outer housing. The circuit board is at least in close fit with the second air outlet and is integrally provided with a pressure sensor at the fit position with the second air outlet.
[0033] As shown in the embodiment Figures 1 to 7 An electric air pump includes a housing 1. The housing 1 includes an inner housing 1.1 having an accommodation space and an outer housing 1.2 sleeved outside the inner housing 1.1. Ventilation grilles 1.3 with openings are respectively arranged at the upper and lower ends of the housing 1. At the upper end inside the inner housing 1.1, a cylinder 2 is arranged, and at the lower end, a motor 3 is arranged. A connecting portion 2.1 extends downward from the lower end of the cylinder 2 towards the motor 3. A connecting member 3.1 is fixedly connected to one end of the motor 3 close to the cylinder 2, and is fixedly connected to the connecting portion 2.1 of the cylinder 2 through the connecting member 3.1, thereby realizing the fixed connection of the cylinder 2 and the motor 3 together.
[0034] Further, the air cylinder 2 further includes a cylinder block 2.2, a first air outlet 2.3 and a second air outlet 2.4. A movable piston 2.5 is arranged inside the cylinder block 2.2. The piston 2.5 is in transmission connection with the motor 3 through a transmission structure, and the motor 3 can drive the piston 2.5 to reciprocate inside the cylinder block 2.2.
[0035] The first air outlet 2.3 is connected with a flexible air outlet pipe 4. The air outlet pipe 4 extends outwards through the air exchange grille 1.3 at the upper end of the housing 1, and a one-way valve 2.6 for preventing gas from flowing back is arranged at a position inside the cylinder block 2.2 close to the first air outlet 2.3.
[0036] An opening for exposing the second air outlet 2.4 is arranged on the inner housing 1.1. A circuit board 5 electrically connected to the motor 3 is arranged between the inner housing 1.1 and the outer housing 1.2. The circuit board 5 is fixedly connected to the air cylinder 2 through screws passing through the inner housing 1.1 and is positioned at this opening. A pressure sensor (not shown in the figure) integrated with the circuit board 5 is welded on the circuit board 5. The position of the pressure sensor on the circuit board 5 is in close fit with the opening on the inner housing 1.1 or at least with the second air outlet 2.4 inside the opening on the inner housing 1.1, so that the pressure sensor is located inside the second air outlet 2.4, realizing the monitoring of the air pressure condition during inflation and preventing overcharging.
[0037] Specifically, structures such as a display screen 5.1 and a key 5.2 are integrated on one side of the circuit board 5 away from the inner housing 1.1. The circuit board 5 is also integrated with a lighting system exposed outside the housing 1 at the upper end, such as an LED lamp 5.3, which can facilitate auxiliary lighting during inflation. An avoidance groove 1.2.1 for exposing structures such as the display screen 5.1 and the key 5.2 is arranged on the outer housing 1.2. By arranging the circuit board 5 between the outer housing 1.2 and the inner housing 1.1 and integrating structures such as the pressure sensor, the display screen 5.1, the key 5.2, and the LED lamp 5.3 on the circuit board 5 as a whole, the problem of messy wire arrangement inside the housing 1 can be effectively avoided.
[0038] Further, the transmission structure includes a first transmission gear 6.1, a second transmission gear 6.2 and a connecting rod 6.3. The motor 3 is vertically placed inside the inner housing 1.1 and extends an output end at each of its upper and lower ends. The first transmission gear 6.1 is connected to the output end of the upper end of the motor 3 near the cylinder 2 and rotates synchronously. The second transmission gear 6.2 is rotatably arranged on the connecting portion 2.1. The rotating shaft of the first transmission gear 6.1 is perpendicular to the rotating shaft of the second transmission gear 6.2, and the first transmission gear 6.1 meshes with the second transmission gear 6.2. One end of the connecting rod 6.3 is connected to the piston 2.5, and the other end is rotatably and eccentrically arranged on the second transmission gear 6.2. A limiting gasket 6.4 is sleeved on the rotating shaft of the end of the connecting rod 6.3 that is connected to the second transmission gear 6.2. The limiting gasket 6.4 is arranged on the side of the rotating shaft away from the second transmission gear 6.2. In actual use, the limiting gasket 6.4 can effectively prevent the connecting rod 6.3 from falling off. When the motor 3 is started, its output end drives the first transmission gear 6.1 to rotate. The first transmission gear 6.1 drives the second transmission gear 6.2 meshing with it to rotate. After the second transmission gear 6.2 rotates, the connecting rod 6.3 eccentrically connected to it will drive the piston 2.5 to reciprocate inside the cylinder block 2.2 and cooperate with the one-way valve 2.6 to achieve the inflation operation.
[0039] Specifically, a rotating bearing 6.5 coaxial with the second transmission gear 6.2 is positioned on the connecting portion 2.1. The rotating bearing 6.5 is sleeved on the rotating shaft of the second transmission gear 6.2 and cooperates with the connecting portion 2.1 to make the rotation of the second transmission gear 6.2 smoother.
[0040] Further, a ventilation fan 3.2 is arranged inside the inner housing 1.1. The ventilation fan 3.2 is connected to the output end of the lower end of the motor 3 near the ventilation grille 1.3 and rotates synchronously.
[0041] Further, a flexible buffer sleeve 3.3 is sleeved outside the motor 3. The buffer sleeve 3.3 is used to reduce the jitter and noise of the motor 3. The buffer sleeve 3.3 can be a rubber sleeve or a silica gel sleeve.
[0042] Further, a power supply 7 electrically connected to the motor 3 is arranged between the outer housing 1.2 and the inner housing 1.1. The power supply 7 is a rechargeable battery, and its arrangement between the outer housing 1.2 and the inner housing 1.1 is beneficial for later maintenance and replacement.
[0043] Further, a part of the gap is left between the inner housing 1.1 and the outer housing 1.2. This gap can effectively isolate the heat generated by the long-term operation of the motor 3 and the heat generated by the friction of the piston 2.5 during the use of the air pump, avoiding the difficulty for the user to hold.
[0044] Those skilled in the art should understand that the technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.
[0045] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.
Claims
1. An electric air pump, comprising a housing, the housing comprising an inner housing having an accommodating space and an outer housing sleeved outside the inner housing, characterized in that: A cylinder is arranged inside the inner shell, and the cylinder includes a cylinder body, a first air outlet and a second air outlet, the first air outlet is connected to an air outlet pipe, a movable piston is arranged inside the cylinder body, and the piston is connected to the motor through a transmission structure, and the transmission structure includes a first transmission gear, a second transmission gear and a connecting rod, and the cylinder is provided with a connecting portion extending toward the direction of the motor, and the second transmission gear is rotatably arranged on the connecting portion, and a rotating bearing which is sleeved on the rotating shaft of the second transmission gear and cooperates with the connecting portion and the second transmission gear is positioned on the connecting portion, and the first transmission gear is connected to the motor The output end rotates synchronously, the rotating shaft of the first transmission gear is vertically arranged with the rotating shaft of the second transmission gear and the second transmission gear is meshed with the first transmission gear, one end of the connecting rod is connected with the piston, and the other end is rotatable and eccentrically arranged on the second transmission gear, and the motor can drive the piston to reciprocate in the cylinder body; an opening for exposing the second air outlet is provided on the inner shell body, and a circuit board fixed at the opening is provided between the inner shell body and the outer shell body, and the circuit board is tightly matched with at least the second air outlet and a pressure sensor is integrated at the matching position with the second air outlet.
2. An electric air pump according to claim 1, characterized in that: The motor is fixedly connected with a connecting piece at one end close to the connecting portion, and the connecting piece is fixedly connected to the connecting portion.
3. An electric air pump according to claim 1, characterized in that: A limiting gasket is sleeved on the rotating shaft at one end of the connecting rod which is cooperatively connected with the second transmission gear, and the limiting gasket is arranged on a side of the rotating shaft away from the second transmission gear.
4. An electric air pump according to any one of claims 1 to 3, characterized in that: The upper and lower ends of the shell are respectively provided with hollow ventilation grilles, and the motor is connected with a rotatable ventilation fan on one side close to the ventilation grilles.
5. An electric air pump according to any one of claims 1 to 3, characterized in that: The motor is externally covered with a flexible buffer sleeve.
6. An electric air pump according to any one of claims 1 to 3, characterized in that: The circuit board passes through the inner shell and is fixedly connected to the cylinder.
7. An electric air pump according to any one of claims 1 to 3, characterized in that: A gap is left between the inner shell and the outer shell.