Inflation pump structure with high heat insulation property

Abstract

The utility model belongs to the technical field of inflating pumps, and particularly relates to an inflating pump structure with high heat insulation performance. An inflation pump structure with high heat insulation performance comprises a shell, a motor assembly and a piston assembly, the motor assembly and the piston assembly are located in the shell, the shell is provided with an air outlet hole communicated with the piston assembly, the motor assembly drives the piston assembly to do piston motion so as to achieve inflation, and the shell comprises an inner-layer hard shell body and an outer-layer soft shell body. The outer-layer soft shell wraps the outer side of the inner-layer hard shell, and the inner-layer hard shell and the outer-layer soft shell are integrally formed through a double-color injection molding process or a die covering process. According to the blast pump, the shell of the blast pump is arranged to be the inner-layer hard shell and the outer-layer soft shell, so that the blast pump has the advantage that the heat insulation and anti-falling effects of the blast pump can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of air pump technology, and in particular relates to an air pump structure with high heat insulation. Background Technology

[0002] Air pumps, as a common inflation tool, are widely used for inflating car tires, bicycle tires, inflatable toys, and other products. Traditional air pump housings are typically injection-molded from a single plastic material. While this design is simple and inexpensive, it also has some significant drawbacks. For example, its simple structure lacks thermal insulation, allowing internal heat to transfer to the outer surface through conduction and convection, resulting in poor insulation performance. Furthermore, the shock absorption and noise reduction effects of injection molding from a single plastic material are limited, failing to effectively absorb the vibrations and noise generated during operation, thus affecting user comfort. Utility Model Content

[0003] To address the shortcomings of existing technologies, a high-insulation air pump structure is provided that can improve heat insulation performance and also resist impact.

[0004] This utility model is achieved by the following technical solution: a high heat insulation air pump structure, including a shell and a motor assembly and a piston assembly located inside the shell. The shell is provided with an air outlet communicating with the piston assembly. The motor assembly drives the piston assembly to perform piston movement to realize air pumping. The shell includes an inner hard shell and an outer soft shell. The outer soft shell wraps around the outside of the inner hard shell. The inner hard shell and the outer soft shell are integrally formed by a two-color injection molding process or a die-casting process.

[0005] This design uses an inner and outer shell for the air pump. The inner shell is a rigid material, while the outer shell is a flexible material. The inner rigid shell is made of high-strength, hard materials such as ABS and PC, and it supports and protects the motor and piston components. The outer flexible shell is made of elastic, soft materials such as TPE and TPU, and it covers the outer surface of the inner rigid shell to absorb impact and provide heat insulation. Therefore, the overall design improves the air pump's heat insulation while also providing impact resistance and noise reduction.

[0006] Preferably, the housing has heat dissipation holes at the positions corresponding to the piston assembly and the motor assembly.

[0007] By setting heat dissipation holes at the locations of the piston assembly and motor assembly, the heat generated by the piston assembly and motor assembly during operation can be dissipated, thus preventing the components from being damaged due to excessive temperature.

[0008] Preferably, the motor assembly includes a motor, and the end of the output shaft of the motor is provided with fan blades, which are aligned with the heat dissipation holes.

[0009] By installing fan blades on the output shaft of the motor, the fan blades will rotate when the motor is rotating, and at the same time, the fan blades will be aligned with the heat dissipation holes, thus ensuring that heat can be dissipated from the heat dissipation holes in a timely manner.

[0010] Preferably, the outer shell includes a separate outer shell body and an outer shell sidewall, the outer shell body has a lateral opening, and the outer shell sidewall is detachably connected to the opening of the outer shell body; a detachable connection structure is provided between the inner hard shell of the outer shell body and the inner hard shell of the outer shell sidewall.

[0011] The outer shell and its sidewalls are separate components to facilitate the placement of the piston assembly and motor assembly within the shell. Furthermore, since the inner rigid shell is made of a high-strength, rigid material, a detachable connection structure is provided on the inner rigid shell. This detachable connection structure can be any existing connection structure that enables connection between the shells.

[0012] Preferably, the detachable connection structure includes a laterally extending buckle and a buckle groove that engages with the buckle.

[0013] The combination of the clips and clip slots facilitates the assembly and disassembly of the outer casing and its side walls.

[0014] Preferably, the buckles are arranged on the sidewall of the outer shell along the circumferential direction, and the buckle slots are arranged on the outer shell body along the circumferential direction of the opening of the outer shell body.

[0015] The clips or clip slots are arranged circumferentially on the side wall and body of the outer casing to achieve all-round fixation.

[0016] Preferably, the inner wall of the inner rigid shell of the outer shell body is provided with a plurality of evenly spaced protrusions, and a battery is also provided inside the outer shell, the battery being supported on the protrusions; the inner wall of the inner rigid shell of the outer shell body is also provided with a connecting part, and the piston assembly and the motor assembly are both fixed on the connecting part, so that the piston assembly and the motor assembly do not directly contact the inner wall of the inner rigid shell of the outer shell body.

[0017] By incorporating raised strips, the strength of the inner rigid casing can be increased while preventing direct contact between the battery and the inner rigid casing. The indirect contact through the raised strips improves heat insulation. Furthermore, by providing a connecting part, both the piston assembly and the motor assembly are fixed to the connecting part, preventing them from directly contacting the inner wall of the inner rigid casing, thereby enhancing heat insulation.

[0018] Preferably, the protrusion extends toward the opening of the outer shell body and extends beyond the opening of the outer shell body, and the side wall of the outer shell is provided with a mating groove that matches the protrusion.

[0019] The raised strips and mating grooves can serve as positioning elements between the outer casing body and the outer casing sidewalls.

[0020] Preferably, the housing also includes a control component, which includes a circuit board, a button, and a display screen. The inner rigid housing has a display section adapted to the display screen and a clearance hole adapted to the button. The display section is transparent and protrudes outward. The outer soft housing has a clearance groove for avoiding the display section and a button section adapted to the button.

[0021] The inner rigid shell is made of a high-strength, rigid material, and thus the display section is located on the inner rigid shell for both displaying and protecting the screen. The outer flexible shell is made of a flexible, elastic material, and thus a press-sensitive part is provided, allowing the user to operate the buttons by pressing the press-sensitive part.

[0022] Compared with the existing technology, this utility model has the advantages of improving the heat insulation effect of the air pump, as well as improving the impact resistance, shock absorption and noise reduction effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the air pump.

[0024] Figure 2 This is a schematic diagram of the outer casing and its internal components.

[0025] Figure 3 for Figure 2 A schematic diagram of the structure after adding the control components;

[0026] Figure 4 This is a schematic diagram of the structure of the outer shell sidewall;

[0027] Figure 5 for Figure 2 A schematic diagram of the structure after removing the battery;

[0028] Figure 6 for Figure 1 Exploded view.

[0029] Reference numerals: 1. Outer shell; 11. Outer shell body; 12. Outer shell side wall; 111. Vent hole; 112. Vent hole; 2. Inner hard shell; 21. Display unit; 22. Clearance hole; 3. Outer soft shell; 31. Clearance groove; 32. Button; 4. Motor; 41. Output shaft; 42. Fan blade; 5. Piston assembly; 6. Circuit board; 61. Display screen; 62. Button; 7. Battery; 8. Connecting part; 9. Protrusion; 91. Snap-in groove; 92. Snap-in; 93. Mating groove. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 6 As shown, this embodiment discloses a high-insulation air pump structure, which includes a housing 1. The housing 1 includes a separate housing body 11 and a housing sidewall 12. The housing body 11 has a front opening, and the housing sidewall 12 is detachably adapted to the opening of the housing body 11 to form a complete housing 1. Both the housing body 11 and the housing sidewall 12 include an inner rigid shell 2 and an outer soft shell 3. The outer soft shell 3 wraps around the outside of the inner rigid shell 2. The inner rigid shell 2 and the outer soft shell 3 are integrally formed by existing two-color injection molding or overmolding processes.

[0032] The housing 1 contains a piston assembly 5, a motor assembly, a control assembly, and a battery 7. The motor assembly includes a motor 4, whose output shaft 41 is linked to the piston assembly 5 via gears and an eccentric shaft, driving the piston assembly 5 to perform reciprocating piston motion; a fan blade 42 is fixed to the end of the output shaft 41. An air outlet 111 communicating with the piston assembly 5 is provided on the side wall of the housing body 11, and a heat dissipation hole 112 is also provided on the side wall of the housing body 11. The positions of the heat dissipation holes 112 correspond to the piston assembly 5 and the fan blade 42 to achieve heat dissipation for the piston assembly 5, motor assembly, battery 7, and control assembly.

[0033] A protrusion 9 and a connecting part 8 are provided on the inner wall of the inner hard shell 2 of the outer shell body 11. A piston assembly 5 is fixed on the connecting part 8. The motor 4 is a brushless motor and is fixed on the frame of the piston assembly 5, so that the piston assembly 5 and the motor assembly do not directly contact the inner wall of the inner hard shell 2 of the outer shell body 11. The battery 7 is supported on the protrusion 9.

[0034] The protruding strip 9 extends along the opening direction of the outer shell body 11 and is evenly distributed along the circumferential direction of the opening of the outer shell body 11. The protruding strip 9 is provided with a snap-fit ​​groove 91 and extends beyond the opening of the outer shell body 11. The inner hard shell 2 of the outer shell side wall 12 is provided with a mating groove 93 that engages with the protruding strip 9 and a snap-fit ​​92 that engages with the snap-fit ​​groove 91.

[0035] The control components include a circuit board 6, a display screen 61, and a button 62. The inner hard shell 2 of the outer casing side wall 12 is provided with a display part 21 adapted to the display screen 61 and a clearance hole 22 adapted to the button 62. The display part 21 is transparent and protrudes outward. The outer soft shell 3 of the outer casing side wall 12 is provided with a clearance groove 31 for avoiding the display part 21 and a button part 32 adapted to the button 62.

Claims

1. A high-insulation air pump structure, comprising a housing and a motor assembly and a piston assembly located within the housing, wherein the housing has an air outlet communicating with the piston assembly, and the motor assembly drives the piston assembly to perform piston movement to achieve air pumping, characterized in that: The outer shell includes an inner rigid shell and an outer soft shell, the outer soft shell being wrapped around the outside of the inner rigid shell, and the inner rigid shell and the outer soft shell being integrally formed by a two-color injection molding process or a die-casting process. The outer shell includes a separate outer shell body and an outer shell sidewall. The outer shell body has a lateral opening, and the outer shell sidewall is detachably connected to the opening of the outer shell body. A detachable connection structure is provided between the inner rigid shell of the outer shell body and the inner rigid shell of the outer shell sidewall. The inner wall of the inner rigid shell of the outer shell body is provided with a number of evenly spaced protrusions. A battery is also provided inside the outer shell body and is supported on the protrusions. A connecting part is also provided on the inner wall of the inner rigid shell of the outer shell body. The piston assembly and the motor assembly are both fixed on the connecting part, so that the piston assembly and the motor assembly do not directly contact the inner wall of the inner rigid shell of the outer shell body.

2. The high-insulation air pump structure according to claim 1, characterized in that: The detachable connection structure includes a laterally extending buckle and a buckle groove that engages with the buckle.

3. The high-insulation air pump structure according to claim 2, characterized in that: The buckles are arranged on the side wall of the outer shell along the circumferential direction, and the buckle slots are arranged on the outer shell body along the circumferential direction of the opening of the outer shell body.

4. The high-insulation air pump structure according to claim 1, characterized in that: The protrusion extends toward the opening of the outer shell body and extends beyond the opening of the outer shell body. The side wall of the outer shell is provided with a mating groove that matches the protrusion.

5. The high-insulation air pump structure according to any one of claims 1 to 4, characterized in that: The housing also includes a control component, which includes a circuit board, buttons, and a display screen. The inner rigid housing has a display section adapted to the display screen and a clearance hole adapted to the buttons. The display section is transparent and protrudes outward. The outer soft housing has a clearance groove for avoiding the display section and a button section adapted to the buttons.

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