Shell structure of electric air pump

Abstract

The utility model discloses a shell structure of an electric air pump, which comprises a half shell I and a half shell II which are respectively provided with a local electric appliance cavity, an impeller cavity and a partition plate, a clamping part capable of clamping the outer wall of a motor is arranged on the partition plate of the half shell I and the half shell II or in the electric appliance cavity, and the clamping part on the half shell I and the clamping part on the half shell II are matched to limit shaking or shaking and rotation of the motor. The motor is provided with a socket, a protruding block capable of being inserted into the socket is arranged in the electric appliance cavity, and rotation of the motor can be limited through cooperation of the protruding block and the socket. Compared with the prior art, the electric air pump has the advantages that due to the structural arrangement of the first half shell and the second half shell which form the shell of the electric air pump, the number of molds needing to be configured is reduced, the mold cost is effectively reduced, the motor, the integrated circuit board and the impeller in the electric air pump are installed corresponding to the first half shell or the second half shell, and the first half shell and the second half shell are fixedly connected; therefore, the number of assembling procedures is effectively reduced, the labor cost is reduced, and the assembling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric air pump technical field relates to the casing of electric air pump especially the casing structure of electric air pump. BACKGROUND

[0002] Electric air pump is a kind of power-driven, using motor-driven impeller rotation, produce directional airflow, to realize the air pump of aeration or air extraction function, through electric drive impeller rotation, make the diaphragm or piston in pump reciprocating motion, to form negative pressure or positive pressure, gas is inhaled and discharged.

[0003] The casing of electric air pump is an important component of electric air pump, with the functions of protecting internal components, providing structural support and optimizing airflow path.

[0004] Part such as the patent of authorized announcement No.CN220522820U provides an improved electric air pump, including casing, lower cover, upper cover, motor, impeller and connecting casing, lower cover and upper cover screw, casing upper end is open setting, lower cover is installed on the upper end of casing, upper cover is set on the lower end of lower cover, upper cover upper end is provided with a air outlet, upper cover and lower cover are surrounded by an air inlet;Motor is set to the inside of casing and is fixed to the lower end of lower cover by bolt, the output end of motor is upwardly movable and penetrates lower cover, impeller is set in the cavity surrounded by upper cover and lower cover and is fixed to the output end of motor.

[0005] The shell of electric air pump is divided into three parts in the patent, which leads to the fact that the casing, lower cover and upper cover need separate molds, the high manufacturing cost of molds makes the manufacturing cost of shell high, and the casing, lower cover and upper cover are assembled together, each part needs separate processing and assembly process, which increases labor cost and reduces assembly efficiency. UTILITY MODEL CONTENTS

[0006] The utility model discloses to the problem of high cost and low assembly efficiency of the existing electric air pump, and the technical problem to be solved by the utility model is to provide a casing structure of electric air pump that can reduce cost and improve assembly efficiency.

[0007] The utility model discloses the technical scheme that the above-mentioned technical problem is solved to electric air pump's casing structure, including the half shell one and half shell two of fixed connection, and the electric appliance cavity for installing motor and integrated circuit board and the impeller cavity for accommodating impeller are formed between half shell one and half shell two, and the partition is spaced between electric appliance cavity and impeller cavity;

[0008] Partial electric appliance cavity, impeller cavity and partition are respectively arranged on the half shell one and half shell two;

[0009] The half shell one and the half shell two are provided with clamping parts capable of clamping the outer wall of the motor on the partition plate or in the electric appliance cavity, and the clamping parts on the half shell one and the half shell two are matched to limit the shaking or shaking and rotating of the motor.

[0010] The motor is provided with a socket, and the electric appliance cavity is provided with a protrusion capable of being inserted into the socket, and the matching of the protrusion and the socket can limit the rotating of the motor.

[0011] Further, the half shell one and the half shell two are each provided with a vertical wall, and when the half shell one and the half shell two are fixedly connected, the vertical walls on the half shell one and the half shell two enclose a butt joint cavity.

[0012] Further, the half shell one and / or the half shell two are provided with an air inlet, and the air inlet is arranged at the bottom of the butt joint cavity and communicates the butt joint cavity with the impeller cavity.

[0013] Further, the half shell one and / or the half shell two are provided with an air outlet on the impeller cavity or the electric appliance cavity, and the partition plate is provided with a vent, and the vent communicates the impeller cavity with the electric appliance cavity.

[0014] Further, the half shell one and / or the half shell two are provided with a wire outlet, and the wire outlet communicates the electric appliance cavity.

[0015] Further, the half shell one or the half shell two are provided with an operation opening communicating with the electric appliance cavity, and the operation opening is provided with an elastic reset switch button.

[0016] Further, the motor is provided with a motor shaft, the motor shaft passes through the partition plate and is inserted into the impeller cavity, and the motor shaft in the impeller cavity is fixedly connected with the impeller.

[0017] Further, the motor is also provided with a pin, and the motor is welded and fixed with the integrated circuit board through the pin.

[0018] Further, the socket is provided with a pin end face, and the integrated circuit board welded with the pin can limit the length of the socket along the axial direction of the motor shaft, and limit the movement or movement stroke of the motor along the axial direction of the motor shaft.

[0019] Further, the half shell one and the half shell two are fixed by ultrasonic welding, screw locking, buckling or glue sticking.

[0020] Compared with the prior art, the electric air pump shell is composed of the half shell one and the half shell two, the number of molds required is reduced, the mold cost is effectively reduced, the motor, the integrated circuit board and the impeller in the electric air pump are installed in the half shell one or the half shell two, and the half shell one is fixedly connected with the half shell two, so that the assembly process is effectively reduced, the labor cost is reduced, and the assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model, and in addition, the drawings only schematically show the composition or structure of the described objects conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale, unless specifically indicated.

[0022] Figure 1 It is the structure schematic drawing of preferred embodiment one of the utility model;

[0023] Figure 2 It is the explosion drawing of preferred embodiment one of the utility model;

[0024] Figure 3 It is the sectional view of preferred embodiment one of the utility model;

[0025] Figure 4 It is the preferred embodiment of the utility model Figure 3 The enlarged schematic view of A part in the preferred embodiment;

[0026] Figure 5 It is the explosion drawing of preferred embodiment two of the utility model;

[0027] Figure 6 It is the sectional view of preferred embodiment three of the utility model;

[0028] Figure 7 It is the explosion drawing of preferred embodiment four of the utility model.

[0029] In the drawing: 1, half shell one, 11, recess, 12, baffle one, 13, clamping part one, 14, protruding block, 15, vertical wall one, 16, air outlet, 17, wire outlet; 2, half shell two, 21, protruding rib, 22, baffle two, 23, clamping part two, 24, vertical wall two, 25, operation opening, 26, switch button;A, electric appliance cavity;B, impeller cavity;C, butt joint cavity;D, air inlet;E, air hole;F, step layer;G, perforation. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0031] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0032] This embodiment mainly describes the housing structure of an electric air pump that can reduce costs and improve assembly efficiency, as detailed below: Example

[0033] like Figures 1-4 As shown, the housing structure of the electric air pump includes a first half-shell 1 and a second half-shell 2. The first half-shell 1 and the second half-shell 2 can be fixedly connected by ultrasonic welding, screws, clips, glue, etc. An electrical cavity a, an impeller cavity b, and a docking cavity c are formed between the first half-shell 1 and the second half-shell 2. The electrical cavity a is used to install the motor and the integrated circuit board, and the impeller cavity b is used to install the impeller (the motor, integrated circuit board, and impeller are not shown in the attached drawings of the instruction manual). The docking cavity c is located outside the first half-shell 1 and the second half-shell 2 and is used to dock the sealed bag that needs to be pumped. The first half-shell 1 and the second half-shell 2 each have a partial electrical cavity a, an impeller cavity b, and a docking cavity c.

[0034] In this embodiment, half-shell 1 is provided with a groove 11, and half-shell 2 is provided with a protruding rib 21 that can be inserted and matched with the groove 11. The protruding rib 21 is inserted into the groove 11 so that when half-shell 1 and half-shell 2 are fixedly connected, the outer walls of half-shell 1 and half-shell 2 are flush. Preferably, the positions of the groove 11 on half-shell 1 and the protruding rib 21 on half-shell 2 can be interchanged, or both half-shell 1 and half-shell 2 are provided with grooves 11 and protruding ribs 21 that can cooperate with each other.

[0035] The first half-shell 1 is provided with a partition 12, and the second half-shell 2 is provided with a partition 22. When the first half-shell 1 and the second half-shell 2 are fixedly connected, the partition 12 and the partition 22 are fitted together, and the partition 12 and the partition are provided with grooves 11 and ribs 21 that can be inserted and matched. The partition 12 and the partition 22 that are fitted together or connected separate the electrical cavity a and the impeller cavity b.

[0036] like Figures 2-3 As shown, the partition plate 12 of half-shell 1 is provided with a clamping part 13, and the partition plate 22 of half-shell 2 is provided with a clamping part 23. The common motor is cylindrical in shape. When the motor is installed and fixedly connected in half-shell 1 and half-shell 2, the clamping part 13 and the clamping part 23 are clamped on the outer wall of the motor, which can restrict the motor from shaking in half-shell 1 and half-shell 2. The motor shaft extends into the impeller cavity b, and the motor shaft is fixedly connected to the impeller.

[0037] Preferably, some motors are non-cylindrical in shape. In this case, the clamping cooperation between clamping part 13 and clamping part 23 can limit the shaking and rotation of the motors inside half shell 1 and half shell 2.

[0038] The motor can be a DC geared motor of model 37GB520, a coreless motor, an R300C micro motor, etc. The motor shaft is located at one end of the motor, and the other end of the motor has pins. The motor is fixed to the integrated circuit board by soldering the pins. The motor has a socket. The electrical cavity a of half shell 1 or half shell 2 has a protrusion 14 that can be inserted into the socket. The cooperation between the protrusion 14 and the socket can restrict the rotation of the motor. The protrusion 14 has an inverted T-shaped structure, which can restrict the axial movement of the motor shaft to a certain extent.

[0039] The socket on the motor is connected to the end face with pins, and the integrated circuit board that solders the pins can limit the length of the socket along the motor shaft axis, thus limiting the movement or travel of the motor along the motor shaft axis.

[0040] In this application, the structure of half-shell 1 and half-shell 2 that make up the housing of the electric air pump reduces the number of molds required, effectively reducing mold costs. The motor, integrated circuit board and impeller in the electric air pump are installed in corresponding half-shell 1 or half-shell 2, and half-shell 1 and half-shell 2 are fixedly connected, which effectively reduces assembly steps, reduces labor costs and improves assembly efficiency.

[0041] like Figures 2-3 As shown, a vertical wall 15 is provided on the outer wall of half shell 1, and a vertical wall 24 is provided on the outer wall of half shell 2. The vertical wall 15 and the vertical wall 24 protrude. When half shell 1 and half shell 2 are fixedly connected, the vertical wall 15 and the vertical wall 24 enclose a docking cavity c. An air inlet d is provided on half shell 1 and half shell 2. The air inlet d is located at the bottom of the docking cavity c and connects the docking cavity c with the impeller cavity b. Preferably, only an air inlet d is provided on either half shell 1 or half shell 2.

[0042] In this embodiment, the electrical cavity a of half-shell 1 is provided with an air outlet 16 and a wire outlet 17 on its cavity wall, and a vent hole e is provided on the partition plate. The vent hole e connects the impeller cavity b and the electrical cavity a. When the electric air pump is working to pump air, the airflow passes through the air inlet d, the impeller cavity b, the vent hole e, the electrical cavity a and the air outlet 16 in sequence. While pumping air, it can also cool the motor, integrated circuit board and other components in the electrical cavity a. The wire outlet 17 is used to pass through the wires that electrically connect the integrated circuit board and the motor. Preferably, the air outlet 16 and the wire outlet 17 can also be provided on half-shell 2.

[0043] A step layer f can be arranged in the electrical cavity a of the half shell one 1 and the half shell two 2, and the integrated circuit board can be arranged on the step layer f, so that the integrated circuit board is suspended relative to the bottom of the electrical cavity a, and the wires connected to the integrated circuit board can be pulled out from the wire outlet 17.

[0044] In order to reduce the number of components and installation steps of the electric air pump shell, the operating port 25 is arranged on the half shell two 2, the operating port 25 is communicated with the electrical cavity a, and the elastic reset switch button 26 is connected in the operating port 25, preferably, the positions of the operating port 25 and the switch button 26 can correspond to the integrated circuit board, and the operating port 25 and the switch button 26 can be arranged on the side wall or the bottom of the electrical cavity a, and the operating port 25 and the switch button 26 can also be arranged on the half shell one 1. Embodiment

[0045] As shown in the figure, Figure 5 The difference between the embodiment one and the embodiment two is that the clamping part one 13 on the half shell one 1 and the clamping part two 23 on the half shell two 2 are arranged in the electrical cavity a, and the perforated hole g is further arranged on the partition plate one 12 of the half shell one 1 and / or the partition plate two 22 of the half shell two 2, and the motor shaft of the motor is arranged to pass through the perforated hole g and extend into the impeller cavity b.

[0046] Preferably, the perforated hole g can also be the clamping part one 13 and the clamping part two 23, and the clamping part one 13 in the half shell one 1 and the clamping part two 23 in the half shell two 2 can be arranged at different distances from the bottom of the electrical cavity a, so as to avoid the protruding electrical components on the integrated circuit board. Embodiment

[0047] As shown in the figure, Figure 6 The difference between the embodiment one and the embodiment two is that the air outlet 16 is arranged to communicate with the impeller cavity b. Embodiment

[0048] As shown in the figure, Figure 7 The difference between the embodiment one and the embodiment two is that the air outlet 16 is arranged to communicate with the impeller cavity b.

[0049] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "front", "rear", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, a specific orientation and operation, therefore it cannot be understood as a limitation on the utility model.

[0050] The shell structure of the electric air pump is described in detail, the principle and implementation mode of the electric air pump are described by applying specific examples, the description of the above examples is only used for helping to understand the electric air pump and the core idea, it should be pointed out that, for ordinary technical personnel in the technical field, the electric air pump can be improved and modified in several ways without departing from the principle of the electric air pump, and these improvements and modifications also fall within the protection scope of the electric air pump claim.

Claims

1. A housing structure of an electric air pump, comprising a first half-shell and a second half-shell which are fixedly connected, a motor cavity for mounting a motor and an integrated circuit board and an impeller cavity for accommodating an impeller are formed between the first half-shell and the second half-shell, and a partition plate is arranged between the motor cavity and the impeller cavity. characterized in that Local motor cavities, impeller cavities and partition plates are arranged on the first half-shell and the second half-shell. Clamping portions for clamping the outer wall of the motor are arranged on the partition plates or in the motor cavities of the first half-shell and the second half-shell, and the clamping portions on the first half-shell and the second half-shell are matched to limit the shaking or shaking and rotating of the motor. The motor is provided with a socket, and a protrusion capable of being inserted into the socket is arranged in the motor cavity, and the matching of the protrusion and the socket can limit the rotation of the motor.

2. The housing structure of an electric air pump according to claim 1, characterized by, Vertical walls are arranged on the first half-shell and the second half-shell, and when the first half-shell and the second half-shell are fixedly connected, the vertical walls on the first half-shell and the second half-shell form a butt joint cavity.

3. The housing structure of an electric air pump according to claim 2, characterized by, An air inlet is arranged on the first half-shell and / or the second half-shell, and the air inlet is arranged at the bottom of the butt joint cavity and communicates the butt joint cavity with the impeller cavity.

4. The housing structure of an electric air pump according to claim 1, wherein An air outlet is arranged on the impeller cavity or the motor cavity of the first half-shell and / or the second half-shell, and a ventilation hole is arranged on the partition plate, and the ventilation hole communicates the impeller cavity with the motor cavity.

5. The housing structure of an electric air pump according to claim 1, wherein A wire outlet is arranged on the first half-shell and / or the second half-shell, and the wire outlet communicates the motor cavity.

6. The housing structure of an electric air pump according to claim 1, wherein An operation hole communicating the motor cavity is arranged on the first half-shell or the second half-shell, and a switch button capable of being elastically reset is arranged in the operation hole.

7. The housing structure of an electric air pump according to claim 1, wherein A motor shaft is arranged on the motor, the motor shaft penetrates the partition plate and is inserted into the impeller cavity, and the motor shaft in the impeller cavity is fixedly connected with the impeller.

8. The housing structure of an electric air pump according to claim 7, wherein A pin is further arranged on the motor, and the motor is fixedly welded with the integrated circuit board through the pin.

9. The housing structure of an electric air pump according to claim 8, wherein The socket communicates the end face provided with the pin, and the integrated circuit board welded with the pin can limit the length of the socket along the axial direction of the motor shaft, and limit the movement or movement stroke of the motor along the axial direction of the motor shaft.

10. The housing structure of an electric air pump according to claim 1, wherein The first half-shell and the second half-shell are fixedly connected by ultrasonic welding, screw locking, buckling or glue sticking.

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