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 utility model relates to the field of an inflation device capable of inflating objects such as tires and balls, and particularly relates to an electric air pump. [Background Technology]

[0002] Currently, electric air pumps used to inflate objects such as tires and balls are composed of a structure in which an electric motor is installed at the bottom of a base, a cylinder tube is installed on one side of the base, a piston rod is installed in the cylinder tube, the motor's spindle 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 in use, the aforementioned known air pump mechanism is connected to the object to be inflated via the joint of the air conduit connected to the air connector. 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 connector. Although the aforementioned known air pump mechanism has an inflation function, the gear set and piston rod connected to the motor are exposed on the base, resulting in a relatively loud 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 the combination strength between the cylinder tube and the base is insufficient, making it easy to damage. Further improvements are needed. [Utility Model Content]

[0004] The purpose of the utility model is to provide an air pump core, which improves the problems of the existing air pump core, 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 objectives, the air pump mechanism proposed in the present invention includes:

[0006] A housing, comprising a seat plate portion, a side plate portion formed at one end of the seat plate portion, a cylinder portion formed on the side plate portion, and two triangular side plate portions formed on 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;

[0007] a housing cover, which is detachably assembled and tightly mounted on the housing base and covers the transmission space;

[0008] 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.

[0009] a piston rod mounted in the cylinder portion of the housing and extending into the transmission space;

[0010] a transmission assembly installed in the transmission space of the housing and connecting the piston rod and the rotor of the motor; and

[0011] An air filling joint is installed in the connecting end of the cylinder part.

[0012] 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 plates are formed on both sides of the seat plate portion and the side plate portion of the shell seat, forming a triangular sloped 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 previous assembly step of the separate cylinder portion being installed on the side plate portion; on the other hand, a closed space is formed by the shell cover tightly covering the opening of the transmission space of the shell seat, effectively preventing the noise of the transmission component and the piston rod moving in the shell seat from being transmitted outward, thereby effectively reducing the noise.

[0013] In the air pump mechanism of the present invention, the base plate portion of the housing can be further utilized to form an abutting protrusion and at least one heat dissipation zone located on the side of the abutting protrusion. The abutting protrusion abuts the motor housing of the electric motor, and the heat dissipation holes in the motor housing correspond to the heat dissipation zones, which helps the heat generated during the operation of the motor to be discharged to the outside through the heat dissipation holes in the motor housing and the heat dissipation zones at corresponding positions. Furthermore, the abutting protrusion can be formed into a cross-shaped block having 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. The housing supports the motor stably via the abutting protrusion, and is beneficial to the heat dissipation of the motor.

[0014] In the air pump mechanism of the present invention, a snap-fit ​​combination structure can be further utilized between the shell cover and the shell base to enhance the assembly convenience between the two and reduce costs.

Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the air pump mechanism of the present invention.

[0016] Figure 2 for Figure 1 The three-dimensional exploded schematic diagram of the air pump movement shown.

[0017] Figure 3 for Figure 1 and Figure 2 A schematic cross-sectional view of the air pump movement shown.

[0018] Figure 4 for Figure 1 and Figure 2 A schematic side cross-sectional view of the air pump movement shown.

[0019] 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.

[0020] Figure 6 for Figure 1 and Figure 2 Another perspective schematic diagram of the air pump movement shown. [Specific implementation method]

[0021] like Figure 1 and Figure 2 FIG. 1 shows an embodiment of an air pump mechanism 1 of the present invention, which includes a housing 10 , a housing cover 11 , a motor 12 , a piston rod 13 , a transmission assembly 14 , and an air charging connector 15 . It may further include an impeller 16 .

[0022] like Figures 1 to 4 As shown, the housing 10 has an X-axis, a Y-axis and a Z-axis that 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 of the seat plate portion 101 and extends along the Z-axis. 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. 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. The two triangular side plates 104 are located on either side of the Y-axis of the transmission space 100 and extend from the side plate portion 102 along the X-axis to the other end of the base plate portion 101. By positioning the two triangular side plates 104 on either side of the Y-axis of the transmission space 100 and connecting the base plate portion 101 and the side plates 102, the base plate portion 101 and the side plates 102 of the housing 10 are reinforced, thereby enhancing the mechanical strength of the housing 10. Furthermore, the housing 10 forms a triangular sloped enclosure structure, reducing the amount of material used in the housing 10, thereby lowering costs and reducing weight. Furthermore, the cylinder portion 103 is integrally formed on one side of the side plate portion 102, simplifying its structure and enhancing assembly ease. This eliminates the need for the previously separate cylinder portion 103 to be mounted on the side plate portion 102.

[0023] like Figures 1 to 4As shown, the housing cover 11 can be detachably mounted on the housing base 10. The periphery of the housing cover 11 can closely contact the edges of the base plate portion 101, the side plate portion 102, and the two triangular side plates 104 of the housing base 10. The housing cover 11 and the housing base 10 can be fixed by a snap-fit ​​method or a screw-locking method. In this embodiment, the housing cover 11 and the housing base 10 are fixed by a snap-fit ​​method, making it easy to assemble and disassemble. The housing cover 11 is tightly covered over the opening of the transmission space 100 of the housing base 10 to form a closed space.

[0024] like Figures 1 to 2 In the illustrated embodiment, the shell cover 11 has an engaging portion 111 at one end facing the side plate 102 and at least one hook 112 at the other end. The engaging portion 111 is connected to the side plate 102 of the shell base 10, and the hook 112 is engaged with the end of the base plate 101 away from the side plate 102, thereby fixing the shell cover 11 on the shell base 10.

[0025] like Figure 1 、 Figure 2 and Figure 4 As shown, the motor 12 is mounted on the outside of the base plate portion 101 of the housing 10 and is fixed with screws or other fixing components. 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 base plate portion 101 and extends into the transmission space 100.

[0026] 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 base plate 101. The base plate of the housing 10 may further form an abutting protrusion 105 and at least one heat dissipation zone 106 located on the side of the abutting protrusion 105. The abutting protrusion 105 can abut the motor housing 121 of the motor 12. The heat dissipation holes 123 correspond to the heat dissipation zones 106, allowing the hot air generated during the operation of the motor 12 to be discharged to the outside through the heat dissipation holes 123 of the motor housing 121 and the corresponding heat dissipation zones 106. In this embodiment, the abutting protrusion 105 is formed into a cross-shaped block with four protrusions. The rotor 122 of the motor 12 passes through the center of the cross-shaped abutting protrusion 105, and a heat dissipation zone 106 is located between each two adjacent protrusions. The housing 10 can support the motor 12 stably via the abutting protrusion 105, and is conducive to heat dissipation of the motor 12.

[0027] like Figures 2 to 4As shown, the piston rod 13 is mounted in the cylinder portion 103 of the housing 10 for linear reciprocating motion and extends into the transmission space 100. In this embodiment, the piston rod 13 comprises a rod portion 131 and a piston ring 132. One end of the rod portion 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 portion 103. The pivot end 1312 is located in the transmission space 100.

[0028] 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 move linearly back and forth in the cylinder portion 103 of the housing 10 through the transmission assembly 14.

[0029] 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 pivotally mounted 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 has a hollow portion formed near the eccentrically pivoted piston rod 13 to reduce material usage, reduce weight, and reduce the load on the motor 12.

[0030] like Figure 1 、 Figures 2 to 4 As shown, the inflation connector 15 is installed on the connecting end 1031 of the cylinder part 103 of the shell base 10, and includes a connector body 151 and a one-way valve 152 installed in the connector body 151. One end of the connector body 151 can be assembled with the connecting end 1031 of the cylinder part 103, and the other end of the connector body 151 relative to the cylinder part 103 has an inflation end 153. The one-way valve 152 provided in the connector body 151 can control the pressurized air in the cylinder part 103 to be output in one direction toward the inflation end 153.

[0031] like Figure 1 、 Figure 2 and Figure 4 As shown, the impeller 16 is mounted on the other end of the rotor 122 of the motor 12 to assist the motor 12 in dissipating heat.

[0032] 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 energized and started, and then the piston rod 13 is driven to reciprocate in the cylinder portion 103 of the housing 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.

[0033]

Explanation of symbols

[0034] 1: Air pump movement

[0035] 10: Shell seat

[0036] 100: Transmission space

[0037] 101: Seat plate

[0038] 102: side panel

[0039] 103: Cylinder

[0040] 1031: Connection end

[0041] 104: triangular side panel

[0042] 105: contact bump

[0043] 106: Heat dissipation zone

[0044] 11: Shell cover

[0045] 111: Chimeric part

[0046] 112: Hook

[0047] 12: Electric Motor

[0048] 121: Motor housing

[0049] 122: Rotor

[0050] 123: Heat dissipation holes

[0051] 13: Piston rod

[0052] 131: Rod

[0053] 1311:Piston head

[0054] 1312: pivot end

[0055] 132:Piston ring

[0056] 14: Transmission components

[0057] 141: Driving gear

[0058] 142: driven gear

[0059] 15: Inflatable connector

[0060] 151: Connector body

[0061] 152: One-way valve

[0062] 153: Inflatable end

[0063] 16: Impeller

Claims

1. An air pump movement, characterized in that: include: A housing, comprising a seat plate portion, a side plate portion formed at one end of the seat plate portion, a cylinder portion formed on the side plate portion, and two triangular side plate portions formed on 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 housing cover, which is detachably assembled and tightly mounted on the housing 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 mounted in the cylinder portion of the housing and extending 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 pivotally mounted on the base plate of the housing and meshes with the driving gear. The eccentric pivot of the piston rod is mounted 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: The motor housing of the motor is arranged outside the rotor and has at least one heat dissipation hole on a side facing the base plate; The base plate portion of the housing seat forms an abutting protrusion and at least one heat dissipation zone located on the side of the abutting protrusion. The abutting protrusion can abut against the motor housing of the motor. 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. There is a heat dissipation zone between every two adjacent protrusions.

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