Inflator pump core

Abstract

An inflator pump machine core is characterized in that an air cylinder part is formed on a side plate part at one end of a seat plate part of a shell seat, a motor is assembled on the seat plate part, a piston rod is assembled on the air cylinder part, and a transmission assembly connected with the motor and the piston rod is arranged in the shell seat, the triangular side plate parts are formed on the two sides between the seat plate part and the side plate parts to form a triangular slope type surrounding structure, the bonding strength between the air cylinder part and the side plate parts is improved, heat dissipation can be assisted, the structure can be simplified, the used material amount is reduced, the assembling simplicity is improved, and the service life is prolonged. In addition, the shell cover is tightly covered at the opening of the transmission space of the shell seat to form a closed space, so that the noise generated when the transmission assembly and the piston rod move in the shell seat is effectively prevented from being transmitted outwards.

Description

[Technical field]

[0001] The present invention relates to the field of an inflating device capable of inflating objects such as tires and balls, and in particular to an electric inflator pump. [Background technology]

[0002] At present, in the electric air pump used for inflating objects such as tires and balls, the composition structure of the air pump movement is mainly composed of an electric motor installed at the bottom of a base, a cylinder tube installed on one side of the base, a piston rod installed in the cylinder tube, the main shaft of the motor extends to the top surface of the base and is connected to the rear end of the piston rod by a gear set, and an inflation joint with a one-way valve is installed at the end of the cylinder tube.

[0003] When the aforementioned known air pump movement is used, the joint of the air duct connected to the air joint is connected to the object to be inflated, and the motor drives the gear set to drive the piston rod to reciprocate in the cylinder tube to generate pressurized air, which is then input into the object to be inflated through the air joint. Although the aforementioned known air pump movement has an inflation function, the gear set and the piston rod connected to the motor are exposed on the base, and there is a problem of high noise during use. Furthermore, the cylinder tube must be assembled on one side of the base, and the two form a matching combination structure. The assembly is time-consuming and labor-intensive, and there is insufficient combination strength between the cylinder tube and the base, which is easy to damage, etc., which requires further improvement. [Summary of the invention]

[0004] The purpose of the present invention is to provide an air pump movement to improve the existing air pump movement, such as high noise, time-consuming and labor-intensive assembly, insufficient strength of the combination between the base and the cylinder tube, and easy damage.

[0005] In order to achieve the above-mentioned object, the air pump mechanism proposed by the present invention comprises: A housing seat, comprising a seat plate portion, a side plate portion formed at one end of the seat plate portion, a cylinder portion formed at the side plate portion, and two triangular side plate portions formed at opposite sides between the seat plate portion and the side plate portion, the two triangular side plate portions extending from the side plate portion to the other end of the seat plate portion, a transmission space being formed between the side plate portion and the seat plate portion, and the cylinder portion having a connecting end portion; A shell cover, which is detachably assembled and tightly mounted on the shell base and covers the transmission space; An electric motor is mounted on the base plate of the housing, and includes a rotor, one end of which extends into the transmission space. A piston rod is mounted in the cylinder portion of the housing and extends into the transmission space; a transmission assembly installed in the transmission space of the housing and connecting the piston rod and the rotor of the motor; and An air filling joint is installed in the connecting end of the cylinder part.

[0006] Through the composition and structure of the aforementioned air pump movement, the shell seat is used to integrally form the cylinder portion on its side plate portion, and triangular side plate portions are formed on both sides of the seat plate portion and the side plate portion of the shell seat, forming a triangular slope type enclosed structure, which increases the bonding strength between the cylinder portion and the side plate portion, and can assist in the heat dissipation generated when the piston rod moves in the cylinder portion, thereby extending its service life, and can reduce the amount of material used in the shell seat, reduce costs and reduce weight, while simplifying its structure, increasing the ease of assembly, and eliminating the assembly step of the previous separate cylinder portion being installed on the side plate portion; on the other hand, a closed space is formed by the shell cover being tightly covered at the opening of the transmission space of the shell seat, which effectively prevents the noise of the transmission component and the piston rod moving in the shell seat from being transmitted outward, thereby effectively reducing the noise.

[0007] In the air pump movement of the present invention, the seat plate portion of the shell seat can be further used to form an abutting protrusion and at least one heat dissipation interval located on the side of the abutting protrusion. The abutting protrusion abuts the motor housing of the motor, and the heat dissipation holes in the motor housing correspond to the heat dissipation interval, which helps the hot air generated when the motor is running to be discharged to the outside through the heat dissipation holes of the motor housing and the heat dissipation interval at the corresponding position. Furthermore, the abutting protrusion can form a cross-shaped block with four protrusions. The rotor of the motor passes through the center position of the cross-shaped abutting protrusion, and there is a heat dissipation interval between every two adjacent protrusions. The shell seat can support the motor stably through the abutting protrusion, which is beneficial to the heat dissipation of the motor.

[0008] In the air pump movement of the present invention, the shell cover and the shell seat can be further combined into a snap-fit ​​structure to improve the assembly convenience between the two and reduce the cost.

Brief Description of the Drawings

[0009] Figure 1 It is a three-dimensional schematic diagram of an embodiment of an air pump movement of the present invention. Figure 2 for Figure 1 A three-dimensional exploded schematic diagram of the air pump movement shown. Figure 3 for Figure 1 and Figure 2 A schematic cross-sectional view of the air pump movement shown. Figure 4 for Figure 1 and Figure 2 A schematic side cross-sectional view of the air pump movement shown. Figure 5 for Figure 1 and Figure 2 A three-dimensional schematic diagram of the base of the air pump movement shown from another perspective. Figure 6for Figure 1 and Figure 2 A three-dimensional schematic diagram of the air pump movement from another perspective is shown. [Specific implementation method]

[0010] like Figure 1 and Figure 2 As shown, it discloses an embodiment of the air pump mechanism 1 of the present invention, the air pump mechanism 1 comprises a housing 10, a housing cover 11, a motor 12, a piston rod 13, a transmission assembly 14 and an air charging connector 15. Or further comprises an impeller 16.

[0011] like Figures 1 to 4 As shown, the housing 10 has X-axis, Y-axis and Z-axis directions which are perpendicular to each other in a three-dimensional space, and includes a seat plate portion 101, a side plate portion 102, a cylinder portion 103 and two triangular side plate portions 104. The side plate portion 102 is formed at one end of the X-axis direction of the seat plate portion 101 and extends along the Z-axis direction. A transmission space 100 is formed between the side plate portion 102 and the seat plate portion 101. The cylinder portion 103 is integrally formed on the outer side of the side plate portion 102 and extends along the X-axis direction. The cylinder portion 103 has a cylinder chamber, which is connected to the transmission space 100 through the side plate portion 102. The cylinder portion 103 is away from the side plate portion 102. One end of the side plate portion 102 has a connecting end portion 1031, and the two triangular side plate portions 104 are respectively located on both sides of the Y-axis direction of the transmission space 100, and extend from the side plate portion 102 to the other end of the seat plate portion 101 along the X-axis direction. The two triangular side plate portions 104 are respectively located on both sides of the Y-axis direction of the transmission space 100 and connect the seat plate portion 101 and the side plate portion 102, so as to reinforce the seat plate portion 101 and the side plate portion 102 of the shell seat 10, improve the mechanical strength of the shell seat 10, and at the same time, the shell seat 10 can form a triangular slope type enclosed structure, reduce the amount of materials used in the shell seat 10, reduce costs and reduce weight. On the other hand, the cylinder portion 103 is integrally formed on one side of the side plate portion 102, so that its structure is simplified, the assembly convenience is improved, and the assembly steps of installing the previously separated cylinder portion 103 on the side plate portion 102 can be eliminated.

[0012] like Figures 1 to 4 As shown, the shell cover 11 can be detachably mounted on the shell base 10, and the periphery of the shell cover 11 can closely contact the edges of the base plate portion 101, the side plate portion 102 and the two triangular side plate portions 104 of the shell base 10, and the shell cover 11 and the shell base 10 can be fixed by a snap-fit ​​method or a screw-locking method. In this embodiment, the shell cover 11 and the shell base 10 are fixed by a snap-fit ​​method, so that it has the function of easy disassembly and assembly, and the shell cover 11 is closely covered at the opening of the transmission space 100 of the shell base 10 to form a closed space.

[0013] like Figure 1 to Figure 2In the illustrated embodiment, the shell cover 11 has an engaging portion 111 at one end facing the side plate portion 102 and at least one hook 112 at the other end, and the engaging portion 111 is connected to the side plate portion 102 of the shell base 10, and the hook 112 is buckled with an end of the seat plate portion 101 away from the side plate portion 102, so that the shell cover 11 is fixed on the shell base 10.

[0014] like Figure 1 , Figure 2 and Figure 4 As shown, the motor 12 is mounted on the outside of the seat plate portion 101 of the housing 10 and fixed by fixing components such as screws. The motor 12 includes a motor housing 121, a stator mounted in the motor housing 121 and a rotor 122 pivotally mounted in the stator. The rotor 122 passes through the seat plate portion 101 and extends into the transmission space 100.

[0015] like Figure 2 , Figures 4 to 6 As shown, the motor housing 121 of the motor 12 has one or more heat dissipation holes 123 on the side facing the seat plate portion 101. The bottom plate portion of the housing seat 10 can further form an abutting protrusion 105 and at least one heat dissipation interval 106 located on the side of the abutting protrusion 105. The abutting protrusion 105 can abut the motor housing 121 of the motor 12, and the heat dissipation holes 123 correspond to the heat dissipation interval 106, so that the hot air flow generated when the motor 12 is running is discharged to the outside through the heat dissipation holes 123 of the motor housing 121 and the heat dissipation interval 106 at the corresponding position. In this embodiment, the abutting protrusion 105 forms a cross-shaped block with four protrusions, and the rotor 122 of the motor 12 passes through the center position of the cross-shaped abutting protrusion 105, and there is a heat dissipation interval 106 between every two adjacent protrusions. The housing seat 10 can support the motor 12 stably through the abutting protrusion 105, and it is beneficial to the heat dissipation of the motor 12.

[0016] like Figures 2 to 4 As shown, the piston rod 13 can be installed in the cylinder part 103 of the housing 10 in a linear reciprocating manner and extends to the transmission space 100. In this embodiment, the piston rod 13 has a rod part 131 and a piston ring 132. One end of the rod part 131 is a piston head 1311, and the other end is a pivot end 1312. The piston ring 132 is sleeved on the outer circumference of the piston head 1311 and can closely contact the inner wall of the cylinder part 103. The pivot end 1312 is located in the transmission space 100.

[0017] like Figures 2 to 4 As shown, the transmission assembly 14 is installed in the transmission space 100 of the housing 10 and is connected between the piston rod 13 and the rotor 122 of the motor 12, so that the power output by the motor 12 drives the piston rod 13 to reciprocate linearly in the cylinder part 103 of the housing 10 through the transmission assembly 14.

[0018] like Figure 2 Figure 4 As shown, in this embodiment, the transmission assembly 14 includes a driving gear 141 and a driven gear 142. The driving gear 141 is assembled with one end of the rotor 122 of the motor 12. The driven gear 142 is pivoted on the base plate of the housing 10 and meshes with the driving gear 141. The pivot end 1312 of the piston rod 13 is eccentrically pivoted on the driven gear 142. The driving gear 141 is a small gear, and the driven gear 142 is a large gear larger than the driving gear 141. The driven gear 142 forms a hollow portion at the position adjacent to the eccentrically pivoted piston rod 13 to reduce material consumption, reduce weight, and reduce the load of the motor 12.

[0019] like Figure 1 , Figures 2 to 4 As shown, the inflation joint 15 is installed at the connecting end 1031 of the cylinder part 103 of the shell base 10, and includes a joint body 151 and a one-way valve 152 installed in the joint body 151. One end of the joint body 151 can be assembled with the connecting end 1031 of the cylinder part 103, and the other end of the joint body 151 relative to the cylinder part 103 has an inflation end 153. The one-way valve 152 arranged in the joint body 151 can control the pressurized air in the cylinder part 103 to be output unidirectionally toward the inflation end 153.

[0020] like Figure 1 , Figure 2 and Figure 4 As shown, the impeller 16 is disposed at the other end of the rotor 122 of the motor 12 to assist the motor 12 in dissipating heat.

[0021] The air pump mechanism 1 of the present invention can be installed in a casing including a switch group, and the switch group is electrically connected to the motor 12. The inflation end 153 of the inflation connector 15 can be externally connected to an inflation tube, and the end of the inflation tube has a connector to form an air pump. The switch group of the air pump can be connected to an external power source, or to a power storage component (for example: a rechargeable battery, etc.) set in the casing. The air pump mechanism 1 can be connected to a tire to be inflated via the connector at the end of the inflation tube. When the switch group is switched to the on state, the motor 12 is powered on and started, and then the piston rod 13 is driven to reciprocate in the cylinder part 103 of the shell seat 10 via the transmission component 14 to generate pressurized air, and the pressurized air is input into the object to be inflated through the inflation connector 15 and the inflation tube.

Explanation of symbols

[0001] 1: Air pump movement 10: Shell seat 100: Transmission space 101: Seat plate 102: Side plate 103: Cylinder 1031: Connection end 104: Triangular side panel 105: contact bump 106: Heat dissipation zone 11: Shell cover 111: Chimeric part 112: Hook 12: Electric Motor 121: Motor housing 122: Rotor 123: Heat dissipation holes 13: Piston rod 131: Rod 1311: Piston head 1312: Pivot end 132: Piston ring 14: Transmission components 141: Driving gear 142: Driven gear 15: Inflatable connector 151: Connector body 152: One-way valve 153: Inflatable end 16: Impeller.

Claims

1. An air pump movement, characterized in that: include: A housing seat, comprising a seat plate portion, a side plate portion formed at one end of the seat plate portion, a cylinder portion formed at the side plate portion, and two triangular side plate portions formed at opposite sides between the seat plate portion and the side plate portion, the two triangular side plate portions extending from the side plate portion to the other end of the seat plate portion, a transmission space being formed between the side plate portion and the seat plate portion, and the cylinder portion having a connecting end portion; A shell cover, which is detachably assembled and tightly mounted on the shell base and covers the transmission space; An electric motor is mounted on the base plate of the housing, and includes a rotor, one end of which extends into the transmission space. A piston rod is mounted in the cylinder portion of the housing and extends into the transmission space; a transmission assembly installed in the transmission space of the housing and connecting the piston rod and the rotor of the motor; and An air filling joint is installed in the connecting end of the cylinder part.

2. The air pump movement according to claim 1, characterized in that: The shell cover can be snap-fitted and fixed on the shell base.

3. The air pump movement according to claim 1, characterized in that: The transmission assembly includes a driving gear and a driven gear. The driving gear is connected to one end of the rotor of the motor. The driven gear is pivoted on the seat plate of the housing seat and meshes with the driving gear. The eccentric pivot of the piston rod is arranged on the driven gear.

4. The air pump movement according to claim 1, characterized in that: The rotor assembly is provided with an impeller.

5. The air pump movement according to any one of claims 1 to 4, characterized in that: A motor housing of the motor disposed outside the rotor has at least one heat dissipation hole on a side facing the seat plate; The seat plate portion of the housing seat forms a contact protrusion and at least one heat dissipation zone located on the side of the contact protrusion. The contact protrusion can contact the motor housing of the motor, and the position of the heat dissipation hole corresponds to the heat dissipation zone.

6. The air pump movement according to claim 5, characterized in that: The abutting protrusion forms a cross-shaped block with four protrusions. The rotor of the motor passes through the center position of the cross-shaped abutting protrusion, and there is a heat dissipation zone between every two adjacent protrusions.

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