Built-in pump

Abstract

The utility model discloses a built-in pump which comprises a pump shell and a shell cover, the shell cover covers the pump shell, a one-way valve is arranged on one side of the pump shell, a rotary knob which can rotate and is provided with an air hole is arranged on the shell cover, a first cavity is formed in the pump shell, an air outlet is formed in one side of the pump shell, and a motor support is arranged in the first cavity. The motor support is provided with a conversion cylinder containing cavity used for containing the conversion cylinder, a fan blade installation cavity used for installing the fan blades and a motor, the air outlet is provided with a one-way valve structure, and the rotary knob is connected with the conversion cylinder. The working state of the motor can be controlled through the knob, when the knob rotates clockwise or anticlockwise, the motor is in the working state, and when the knob is at the initial position, the motor is closed. The utility model has a simple structure, is convenient to control air exhaust and air inflation, and also has an air supply function. According to the utility model, the flow direction of the gas is simpler when the gas is pumped and inflated, and the conversion cylinder is used for switching the flow direction of the gas, so that the flow direction of the gas is more convenient to switch.

Description

A built-in pump Technical Field

[0001] This utility model relates to the field of air pump technology, and in particular to a built-in pump. Background Technology

[0002] The built-in air pump is a key component of various inflatable products. During use, the built-in air pump is typically placed inside the inflatable product. This pump allows for rapid inflation and deflation, ensuring the product's proper use and storage.

[0003] However, the built-in air pump in the existing technology cannot achieve good inflation and deflation effects, and the structure is relatively complex and the cost is high.

[0004] In view of this, the present invention aims to provide a built-in pump that, through a cleverly designed switching cylinder, allows for free switching between inflation, deflation, and stop modes with a simple rotation of a knob, simplifying the airflow path. Furthermore, the automatic air replenishment built-in pump can automatically replenish air according to the air pressure of the inflated product. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a built-in pump.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A built-in pump includes a pump housing and a housing cover, the housing cover covering the pump housing, the housing cover having a rotatable knob with an air hole, the pump housing having a first cavity, an air outlet on one side of the pump housing, a motor bracket being disposed within the first cavity, the motor bracket having a converter housing cavity for placing a converter cylinder, a fan blade mounting cavity for mounting a fan blade, and a motor, the air outlet having a one-way valve structure, and the knob being connected to the converter cylinder; the knob's clockwise and counterclockwise rotation angles are both set to 60 degrees.

[0008] During inflation, gas enters the converter cylinder through the air hole of the knob, and finally blows towards the one-way valve structure, opening the one-way valve and entering the inflatable product.

[0009] When evacuating air, rotate the knob to rotate the conversion cylinder. The conversion cylinder will press against the one-way valve structure and open it, thus starting the evacuation process.

[0010] As an improvement of the built-in pump of this utility model, the motor bracket is provided with a first air outlet channel, an air inlet channel and a second air outlet channel. The first air outlet channel is connected to the fan blade mounting cavity, the air inlet channel is connected to the first cavity, and the second air outlet channel is connected to the air outlet.

[0011] When inflating, turn the knob and drive the conversion cylinder to rotate. The gas enters the conversion cylinder through the air hole, then enters the first cavity through the air inlet channel, passes through the fan blade mounting cavity, and is blown from the first air outlet channel to the second air outlet channel, opening the one-way valve in the one-way valve structure and entering the inflated product.

[0012] When evacuating, rotate the knob and drive the conversion cylinder to rotate. The conversion cylinder pushes against the one-way valve structure and opens it. The gas in the inflatable product enters the conversion cylinder from the air outlet and the second air outlet channel. After passing through the air inlet channel and the first cavity, it enters the fan blade mounting cavity and finally exits from the air hole after passing through the first air outlet channel.

[0013] As an improvement to the built-in pump of this utility model, a circuit board is also provided in the first cavity, and a pressure sensor is provided on the circuit board, which extends out from the pump housing.

[0014] As an improvement to the built-in pump of this utility model, the air pressure sensor senses the air pressure inside the inflatable product;

[0015] When the air pressure inside the inflatable product reaches the set value, the motor stops working; when the air pressure inside the inflatable product is lower than the set value, the motor starts to replenish the air pressure inside the inflatable product.

[0016] As an improvement of the built-in pump of this utility model, the bottom of the conversion cylinder is provided with a ventilation notch, a top section and an air vent, and a baffle plate is provided between the air vent and the ventilation notch;

[0017] When inflated, the ventilation notch corresponds to the first air outlet channel and the air inlet channel, and the baffle can block the air inlet channel; the baffle will block the gas from leaking out, preventing gas from leaking from the air inlet channel.

[0018] In the exhaust mode, the ventilation notch corresponds to the second air outlet channel and the air inlet channel, and the air vent corresponds to the first air outlet channel.

[0019] As an improvement of the built-in pump of this utility model, the conversion cylinder is provided with an air inlet and outlet channel, and the air outlet is connected to the air hole through the air inlet and outlet channel.

[0020] As an improvement of the built-in pump of this utility model, the outer side of the middle part of the conversion cylinder is provided with an annular step; a magnet seat is provided on the annular step, a magnet is provided on the magnet seat, and a Hall switch is also provided on the circuit board;

[0021] When the Hall switch senses the magnet, the motor stops working;

[0022] When the motor is being inflated or deflated, the Hall switch and the magnet do not generate an induction.

[0023] As an improvement to the built-in pump of this utility model, it also includes a tactile component, which includes a spring mounting post, a spring and a lifting pin are provided inside the spring mounting post, the lifting pin is connected to the spring, the upper end of the lifting pin extends out from the spring mounting post, the spring mounting post is connected to the inner edge of the housing and is accommodated inside the knob; the knob cavity is provided with a wavy edge, the lifting pin abuts against the wavy edge, and when the knob is rotated, the lifting pin can slide along the wavy edge.

[0024] As an improvement of the built-in pump of this utility model, the outer side of the middle part of the conversion cylinder is provided with an annular step, the annular step is provided with a boss, and the motor bracket is provided with a micro switch. When the conversion cylinder rotates and drives the boss to rotate to correspond with the micro switch, the boss abuts against the micro switch to shut off the motor power.

[0025] When the motor is being inflated or deflated, the boss cancels its control over the micro switch.

[0026] As an improvement of the built-in pump of this utility model, the shell cover has a fixed shell cover and a movable shell cover. One end of the movable shell cover is rotatably connected to one end of the fixed shell cover, and the other end of the movable shell cover is provided with a buckle. The movable shell cover covers the second cavity, which is used to accommodate the power cord and the power supply. The fixed shell cover covers the first cavity, and the knob is installed on the fixed shell cover.

[0027] The beneficial effects of this utility model are as follows: The motor's operating state can be controlled by a knob. The motor is active when the knob is turned clockwise or counterclockwise, and off when the knob is in its initial position. This utility model has a simple structure, convenient air extraction and inflation control, and also features a gas replenishment function. During air extraction and inflation, the gas flow direction is simpler, with the switching cylinder facilitating easy switching of the gas flow direction. Attached Figure Description

[0028] Figure 1 is a perspective view of Embodiment 1 of this utility model;

[0029] Figure 2 is a schematic diagram of the structure of Embodiment 1 of this utility model after the shell cover is removed;

[0030] Figure 3 is a schematic diagram of the internal structure of the first cavity in Embodiment 1 of this utility model;

[0031] Figure 4 is a top view of the motor bracket of Embodiment 1 of this utility model;

[0032] Figure 5 is a perspective view of the motor bracket of Embodiment 1 of this utility model;

[0033] Figure 6 is a schematic diagram of the connection structure between the converter cylinder and the knob in Embodiment 1 of this utility model;

[0034] Figure 7 is a schematic diagram of the internal structure of the knob in Embodiment 1 of this utility model;

[0035] Figure 8 is a cross-sectional view AA in Figure 1 of this utility model;

[0036] Figure 9 is a cross-sectional view of BB in Figure 1 of this utility model;

[0037] Figure 10 is a CC cross-sectional view of Figure 3 of this utility model;

[0038] Figure 11 is a schematic diagram of the structure of Embodiment 2 of this utility model after the shell cover is removed;

[0039] The attached figures are labeled as follows:

[0040] 1. Pump housing; 11. First cavity; 12. Second cavity; 13. Motor bracket; 14. Converter cylinder receiving cavity; 15. First air outlet channel; 16. Second air outlet channel; 17. Fan blade mounting cavity; 18. Motor; 19. Air inlet channel; 20. Fan blade.

[0041] 2. Cover; 21. Fixed cover; 22. Movable cover; 23. Clip;

[0042] 3. One-way valve structure;

[0043] 4. Knob; 41. Air vent; 42. Wavy edge;

[0044] 5. Converter tube; 51. Air outlet; 52. Air inlet and outlet channel; 53. Ventilation gap; 54. Top; 55. Circular step; 56. Magnet base; 57. Magnet; 58. Boss; 59. Wind deflector;

[0045] 6. Circuit board; 61. Barometric pressure sensor; 62. Hall effect switch;

[0046] 7. Tactile components; 71. Spring mounting post; 72. Spring; 73. Lifting pin;

[0047] 8. Micro switch. Detailed Implementation

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0051] Example 1:

[0052] As shown in Figures 1-10, a built-in pump includes a pump housing 1 and a housing cover 2. The housing cover 2 covers the pump housing 1. An air outlet is provided on one side of the pump housing 1. A one-way valve structure 3 is provided inside the air outlet. The pump housing 1 has a first cavity 11 and a second cavity 12. A motor bracket 13 is provided in the first cavity 11. The motor bracket 13 has a converter cylinder receiving cavity 14, a first air outlet channel 15, a second air outlet channel 16, a fan blade mounting cavity 17, a motor 18, and an air inlet channel 19. The first air outlet channel 15 is connected to the fan blade mounting cavity 17, and the air inlet channel 19 is connected to the first cavity 11. A fan blade 20 is provided in the fan blade mounting cavity 17, and the output shaft of the motor 18 is connected to the fan blade 20.

[0053] The cover 2 has a rotatable knob 4, which is connected to a converter cylinder 5. The bottom of the converter cylinder 5 extends into the converter cylinder receiving cavity 14. The knob 4 can be rotated clockwise and counterclockwise by 60 degrees. A circuit board 6 is also provided in the first cavity 11. The circuit board 6 has a pressure sensor 61, which extends from the pump housing 1 and can sense the air pressure inside the inflated product. The pump housing 1 has a perforation corresponding to the position of the pressure sensor 61, and a sealing ring is provided at the position of the perforation.

[0054] Preferably, the bottom side of the converter cylinder 5 is provided with an air vent 51, the converter cylinder 5 is provided with an air inlet and outlet channel 52, and the side of the knob 4 is provided with a plurality of air holes 41 at intervals. The air vent 51 is connected to the air holes 41 through the air inlet and outlet channel 52. Rotating the knob 4 can drive the converter cylinder 5 to rotate.

[0055] When inflating, the knob 4 is turned counterclockwise to drive the converter cylinder 5 to rotate. The air inlet 51 on the converter cylinder 5 corresponds to the air inlet channel 19 on the side of the converter cylinder cavity 14. After the air enters the converter cylinder 5 from the knob 4, it is discharged into the first cavity 11 from the air inlet 51. When the motor 18 drives the fan blade 20 to rotate, the air is discharged sequentially from the first air outlet channel 15, the converter cylinder cavity 14 and the second air outlet channel 16. The air discharged from the second air outlet channel 16 blows open the one-way valve structure 3 by pressure, and the air can be discharged from the one-way valve structure 3 to inflate the inflatable product.

[0056] Preferably, the air pressure sensor 61 senses the air pressure inside the inflatable product;

[0057] When the air pressure inside the inflatable product reaches the set value, the motor 18 stops working. When the pressure of the inflatable product is lower than the set value, the motor 18 starts to replenish the air in the inflatable product.

[0058] Preferably, the bottom of the converter cylinder 5 is provided with a ventilation notch 53 and a top 54, and a baffle plate 59 is provided between the ventilation notch 53 and the air outlet 51;

[0059] When inflated, the ventilation notch 53 corresponds to the first air outlet channel 15 and the second air outlet channel 16; the baffle 59 blocks the air inlet channel 19; the baffle can prevent gas from leaking out and avoid gas from leaking from the air inlet channel.

[0060] In the exhaust mode, the ventilation gap 53 corresponds to the second air outlet 16 and the air inlet 19, and the air outlet 51 corresponds to the first air outlet 15.

[0061] When evacuating, turn the knob 4 clockwise to rotate the converter cylinder 5. The top 54 on the converter cylinder 5 pushes the one-way valve 3 to open. The air outlet 51 on the converter cylinder 5 corresponds to the first air outlet channel 15, and the ventilation notch 53 corresponds to the second air outlet channel 16 and the air inlet channel 19 on the side of the converter cylinder cavity 14. Air is discharged sequentially from the one-way valve 3, the second air outlet channel 16, the ventilation notch 53, the air inlet channel 19, the first cavity 11, the fan blade mounting cavity 17, the first air outlet channel 15, the air outlet 51, the air inlet and outlet channels 52, and the air hole 41 on the knob 4.

[0062] Preferably, the outer side of the middle part of the converter cylinder 5 is provided with an annular step 55; a magnet seat 56 is provided on the annular step 55, a magnet 57 is provided on the magnet seat 56, and a Hall switch 62 is also provided on the circuit board 6; after the lower end of the converter cylinder 5 extends into the converter cylinder receiving cavity 14, the annular step 55 covers the converter cylinder receiving cavity 14, which can prevent gas leakage.

[0063] When Hall switch 62 senses magnet 57, motor 18 stops working;

[0064] When the motor 18 is inflating or deflating, the Hall switch 62 and the magnet 57 do not generate a sense of connection.

[0065] Preferably, it also includes a tactile component 7, which includes a spring mounting post 71. The spring mounting post 71 is provided with a spring 72 and a lifting pin 73. The lifting pin 73 is connected to the spring 72. The upper end of the lifting pin 73 extends out from the spring mounting post 71. The spring mounting post 71 is connected to the inner edge of the cover 2 and is housed inside the knob 4.

[0066] Preferably, the knob 4 has a wavy edge 42 inside its cavity, and the lifting pin 73 abuts against the wavy edge 42. When the knob 4 is rotated, the lifting pin 73 can slide along the wavy edge 42.

[0067] Preferably, the cover 2 has a fixed cover 21 and a movable cover 22. One end of the movable cover 22 is rotatably connected to one end of the fixed cover 21, and the other end of the movable cover 22 is provided with a buckle 23. The movable cover 22 covers the second cavity 12, which is used to accommodate the power cord and power supply. The fixed cover 21 covers the first cavity 11, and the knob 4 is installed on the fixed cover 21.

[0068] Example 2:

[0069] As shown in Figures 1, 4, 5, 6, 7, 9, 10, and 11, a micro-switch controlled pump includes a pump housing 1 and a housing cover 2. The housing cover 2 covers the pump housing 1. A one-way valve 3 is provided on one side of the pump housing 1. The pump housing 1 has a first cavity 11 and a second cavity 12. A motor bracket 13 is provided in the first cavity 11. The motor bracket 13 has a converter cylinder receiving cavity 14, a first air outlet channel 15, a second air outlet channel 16, a fan blade mounting cavity 17, and a motor 18. An air inlet channel 19 is provided on one side of the converter cylinder receiving cavity 14. The first air outlet channel 15 is connected to the fan blade mounting cavity 17, and the air inlet channel 19 is connected to the first cavity 11. A fan blade 20 is provided in the fan blade mounting cavity 17, and the output shaft of the motor 18 is connected to the fan blade 20.

[0070] The cover 2 is equipped with a rotatable knob 4, which is connected to a converter cylinder 5. The converter cylinder 5 is connected to the knob 4 by screws. The bottom of the converter cylinder 5 extends into the converter cylinder receiving cavity 14. The knob 4 is rotated clockwise and counterclockwise by 60 degrees. The outer side of the middle part of the converter cylinder 5 is equipped with an annular step 55, and a boss 58 is provided on the annular step 55. A micro switch 8 is provided on the motor bracket 13. When the converter cylinder 5 rotates, it drives the boss 58 to rotate until it corresponds to the micro switch 8. When the boss 58 abuts against the micro switch 8, it shuts off the power to the motor 18.

[0071] When the motor 18 is inflating or deflating, the boss 58 cancels the abutment control of the micro switch 8.

[0072] Preferably, the bottom side of the converter cylinder 5 is provided with an air vent 51, the converter cylinder 5 is provided with an air inlet and outlet channel 52, the side of the knob 4 is provided with a plurality of air holes 41 at intervals, the air vent 51 is connected to the air holes 41 through the air inlet and outlet channel 52, and rotating the knob 4 can drive the converter cylinder 5 to rotate; the bottom of the converter cylinder 5 is provided with a ventilation notch 53 and a top abutment 54, and a wind baffle 59 is provided between the ventilation notch 53 and the air vent 51;

[0073] When inflated, the ventilation notch 53 corresponds to the first air outlet channel 15 and the second air outlet channel 16; the baffle plate 59 blocks the air inlet channel 19.

[0074] In the exhaust mode, the ventilation gap 53 corresponds to the second air outlet 16 and the air inlet 19, and the air outlet 51 corresponds to the first air outlet 15.

[0075] When inflating, turn the knob 4 counterclockwise, the boss 58 releases its resistance to the micro switch 8, the motor 18 connects the circuit, and the air enters the converter cylinder 5 from the knob 4 and is discharged into the first cavity 11 from the air outlet 51. When the motor 18 drives the fan blade 20 to rotate, the air is discharged sequentially from the first air outlet channel 15, the converter cylinder receiving cavity 14 and the second air outlet channel 16. The air discharged from the second air outlet channel 16 opens the one-way valve structure 3 by pressure, and the air can be discharged from the one-way valve structure 3 to inflate the inflatable product.

[0076] When evacuating, rotating the knob 4 clockwise causes the converter cylinder 5 to rotate, the boss 58 cancels the push against the micro switch 8, the motor 18 connects the circuit, the push top 54 on the converter cylinder 5 pushes the one-way valve 3 to open, the air outlet 51 on the converter cylinder 5 corresponds to the first air outlet channel 15, the ventilation notch 53 corresponds to the second air outlet channel 16 and the air inlet channel 19 on the side of the converter cylinder cavity 14, and the air is discharged sequentially from the one-way valve 3, the second air outlet channel 16, the ventilation notch 53, the air inlet channel 19, the first cavity 11, the fan blade mounting cavity 14, the first air outlet channel 15, the air outlet 51, the air inlet and outlet channels 52 and the air hole 41 on the knob 4.

[0077] Preferably, it also includes a tactile component 7, which includes a spring mounting post 71. The spring mounting post 71 is provided with a spring 72 and a lifting pin 73. The lifting pin 73 is connected to the spring 72. The upper end of the lifting pin 73 extends out from the spring mounting post 71. The spring mounting post 71 is connected to the inner edge of the cover 2 and is housed inside the knob 4.

[0078] Preferably, the knob 4 has a wavy edge 42 inside its cavity, and the lifting pin 73 abuts against the wavy edge 42. When the knob 4 is rotated, the lifting pin 73 can slide along the wavy edge 42.

[0079] Preferably, the cover 2 has a fixed cover 21 and a movable cover 22. One end of the movable cover 22 is rotatably connected to one end of the fixed cover 21, and the other end of the movable cover 22 is provided with a buckle 23. The movable cover 22 covers the second cavity 12, which is used to accommodate the power cord and power supply. The fixed cover 21 covers the first cavity 11, and the knob 4 is installed on the fixed cover 21.

[0080] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and structure of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A built-in pump, comprising a pump housing and a housing cover, the housing cover covering the pump housing, characterized in that, The cover has a rotatable knob with an air hole. The pump housing has a first cavity and an air outlet on one side. A motor bracket is installed in the first cavity. The motor bracket has a converter cylinder receiving cavity for placing the converter cylinder, a fan blade mounting cavity for installing the fan blade, and a motor. A one-way valve structure is installed on the air outlet. The knob is connected to the converter cylinder. When inflating, gas enters the converter cylinder through the air hole of the knob, and finally blows towards the one-way valve structure, opening the one-way valve and entering the inflated product. When evacuating, rotating the knob drives the converter cylinder to rotate, and the converter cylinder pushes against the one-way valve structure and opens it, starting the evacuation process.

2. The built-in pump according to claim 1, characterized in that: The motor bracket is also provided with a first air outlet channel, an air inlet channel, and a second air outlet channel. The first air outlet channel is connected to the fan blade mounting cavity, the air inlet channel is connected to the first cavity, and the second air outlet channel is connected to the air outlet. When inflating, gas enters the converter cylinder from the air hole, then enters the first cavity through the air inlet channel, passes through the fan blade mounting cavity, and is blown from the first air outlet channel to the second air outlet channel, opening the one-way valve in the one-way valve structure and entering the inflated product. When deflating, rotating the knob drives the converter cylinder to rotate, the converter cylinder abuts against the one-way valve structure and opens it, and the gas in the inflated product enters the converter cylinder from the air outlet and the second air outlet channel, passes through the air inlet channel and the first cavity, then enters the fan blade mounting cavity, and finally exits from the air hole after passing through the first air outlet channel.

3. The built-in pump according to claim 1, characterized in that: The first cavity is also equipped with a circuit board, on which a pressure sensor is provided, and the pressure sensor extends out from the pump housing.

4. The built-in pump according to claim 3, characterized in that, The air pressure sensor senses the air pressure inside the inflatable product; when the air pressure inside the inflatable product reaches the set value, the motor stops working; when the air pressure inside the inflatable product is lower than the set value, the motor starts to replenish the air in the inflatable product.

5. The built-in pump according to claim 1, characterized in that, The bottom of the converter cylinder is provided with a ventilation notch, a top, and an air vent. A baffle plate is provided between the air vent and the ventilation notch. When the cylinder is inflated, the ventilation notch corresponds to the first air outlet channel and the air inlet channel, and the baffle plate can block the air inlet channel. When the cylinder is in a deflating state, the ventilation notch corresponds to the second air outlet channel and the air inlet channel, and the air vent corresponds to the first air outlet channel.

6. The built-in pump according to claim 5, characterized in that, The converter cylinder is provided with an air inlet and outlet channel, and the air outlet is connected to the air hole through the air inlet and outlet channel.

7. The built-in pump according to claim 1, characterized in that, The outer side of the middle part of the converter cylinder is provided with an annular step; a magnet seat is provided on the annular step, and a magnet is provided on the magnet seat. A Hall switch is also provided on the circuit board; when the Hall switch senses the magnet, the motor stops working; when the motor is inflating or deflating, the Hall switch does not sense the magnet.

8. The built-in pump according to claim 1, characterized in that, It also includes a tactile component, which includes a spring mounting post, a spring and a lifting pin are provided inside the spring mounting post, the lifting pin is connected to the spring, the upper end of the lifting pin extends out from the spring mounting post, the spring mounting post is connected to the inner edge of the cover and is housed inside the knob; the knob cavity is provided with a wavy edge, the lifting pin abuts against the wavy edge, and when the knob is rotated, the lifting pin can slide along the wavy edge.

9. The built-in pump according to claim 1, characterized in that, The outer side of the middle part of the conversion cylinder is provided with an annular step, and a boss is provided on the annular step. A micro switch is provided on the motor bracket. When the conversion cylinder rotates, it drives the boss to rotate to correspond with the micro switch. When the boss abuts the micro switch, it shuts off the motor power. When the motor is inflating or deflating, the boss cancels its abutment control over the micro switch.

10. The built-in pump according to claim 1, characterized in that, The cover has a fixed cover and a movable cover. One end of the movable cover is rotatably connected to one end of the fixed cover. The other end of the movable cover is provided with a buckle. The movable cover covers a second cavity, which is used to accommodate a power cord and a power source. The fixed cover covers a first cavity. The knob is installed on the fixed cover.

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