Vehicle-mounted mobile phone support vacuum pump

Abstract

The utility model relates to the technical field of vacuum pumps, and discloses a vehicle-mounted mobile phone support vacuum pump which is characterized in that a cavity is formed in one side of a pump bottom shell, and a swing rod penetrates through the cavity and extends into a base; one end of the eccentric wheel is connected with a cross-shaped rotating shaft of the motor, the other end of the eccentric wheel is arranged in a guide rail of the swing rod, and during working, the motor drives the eccentric wheel to rotate and then drives the swing rod to do radial motion so as to form a sealed vacuum pumping environment; when the swing rod is stretched, airflow flows into the cavity from the air inlet hole and passes through the duckbilled valve plate in a one-way mode, and certain negative pressure is formed. When the swing rod is pushed forwards, air is exhausted from the umbrella nails, at the moment, the duckbill valve cannot exhaust air, the larger the exhaust pressure is, the tighter the duckbill valve is closed, and therefore the air inlet end achieves the pressure maintaining effect, and when the pressure of the air inlet end needs to be exhausted, the bolt is pressed.

Description

Technical Field

[0001] This utility model relates to the field of vacuum pump technology, and more specifically, to a vacuum pump for a vehicle-mounted mobile phone holder. Background Technology

[0002] A car phone holder vacuum pump is a device with an air inlet and an air outlet. It generates negative pressure at the air inlet to secure the car phone holder. Currently, vacuum pumps use a motor to drive a piston, which directly compresses a sealed cavity to create a vacuum and draw in gas. However, existing vacuum pumps do not maintain pressure very well; the pressure drops quickly after the vacuum is created.

[0003] Therefore, how to improve the pressure holding capacity of vacuum pumps during operation has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a vacuum pump for a car phone holder, which addresses the defect of existing technology where the rotating shaft of the motor drives the piston to move, and the piston directly squeezes the sealed cavity to form a vacuum environment to evacuate gas, but does not maintain pressure.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to construct a vehicle-mounted mobile phone holder vacuum pump, which has the following features:

[0006] The pump base is L-shaped. A cylindrical cavity is provided on one side of the pump base, and an air inlet is provided next to the cavity. A through hole is provided in the middle to facilitate the installation of a duckbill valve. An exhaust hole is provided on the other side.

[0007] The motor has a cross-shaped shaft on one side;

[0008] An eccentric wheel has a cross groove at one end, which is radially arranged on the cross shaft of the motor, and a cylindrical step off the center at the other end.

[0009] The swing arm has a round end that is inserted into the cylindrical cavity of the pump bottom shell, and a square end that has a guide rail inside the square end.

[0010] A large sealing ring is provided on the rocker arm;

[0011] The pin is cylindrical, with a circular baffle at one end and a groove on one side of the baffle.

[0012] A spring, one end of which is fitted onto a pin, and the other end of which is located inside the pump base;

[0013] A duckbill valve is disposed inside the pump base housing;

[0014] A small sealing ring is provided on the groove of the pin;

[0015] The pump cover fits over the top of the pump base housing. One end of the cover has a through hole for the pin to pass through, and the other end has a groove with two through holes inside.

[0016] Umbrella nails, which are umbrella-shaped, are set in the groove of the pump cover;

[0017] The pump has a cavity on one side of the bottom shell, through which the rocker arm passes and extends into the base. One end of the eccentric wheel is connected to the cross shaft of the motor, and the other end is set in the guide rail of the rocker arm. When working, the motor drives the eccentric wheel to rotate, which in turn drives the rocker arm to move radially to form a sealed vacuum pumping environment.

[0018] Compared with existing technologies, when the swing arm is stretched, the airflow flows into the cavity through the air inlet and passes through the duckbill valve plate in one direction, forming a certain negative pressure. When the swing arm is pushed forward, the gas is discharged from the umbrella nail. At this time, the duckbill valve cannot discharge gas. The greater the discharge pressure, the tighter the duckbill valve closes, thus achieving the function of maintaining pressure at the air inlet. When it is necessary to discharge the pressure at the air inlet, the pin can be pressed. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0020] Figure 1 This is a perspective view of an embodiment of a vacuum pump for a car-mounted mobile phone holder provided by this utility model;

[0021] Figure 2 This is a perspective view of another embodiment of the vacuum pump for a car-mounted mobile phone holder provided by this utility model; Detailed Implementation

[0022] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] like Figures 1-2 As shown, in the first embodiment of the stable micro peristaltic pump of this utility model, there are a vehicle mobile phone holder vacuum pump motor 101, an eccentric wheel 102, a swing arm 103, a large sealing ring 104, a pump bottom shell 105, a spring 106, a duckbill valve 107, a pin 108, a small sealing ring 109, a pump top cover 110, and an umbrella nail 111.

[0024] The pump base 105 is L-shaped. A cylindrical cavity is provided on one side of the pump base 105. An air inlet is provided next to the cavity. A through hole is provided in the middle to facilitate the installation of the duckbill valve 107. An exhaust hole is provided on the other side.

[0025] The motor 101 has a cross-shaped rotating shaft on one side;

[0026] The eccentric wheel 102 has a cross groove at one end, which is radially arranged on the cross shaft of the motor 101, and a cylindrical step off the center at the other end.

[0027] One end of the swing rod 103 is round and inserted into the cylindrical cavity of the pump bottom shell 105, while the other end is square and a guide rail is provided inside the square.

[0028] The large sealing ring 104 is disposed on the rocker arm;

[0029] The pin 108 is cylindrical, with a circular baffle at one end and a groove on one side of the baffle.

[0030] One end of the spring 106 is fitted onto the pin, and the other end is located inside the pump base housing;

[0031] The duckbill valve 107 is disposed inside the pump bottom housing;

[0032] The small sealing ring 109 is disposed on the groove of the pin 108;

[0033] The pump cover 110 covers the top of the pump base 105. One end of the cover has a through hole to allow the pin 108 to pass through, and the other end has a groove with two through holes inside.

[0034] The umbrella nail 111 is umbrella-shaped and is disposed in the groove of the pump cover 110;

[0035] During operation, the motor drives the eccentric wheel to rotate, which in turn drives the swing arm to make radial movements, thereby creating a sealed vacuum pumping environment.

[0036] Compared with existing technologies, when the swing arm is stretched, the airflow flows into the cavity through the air inlet and passes through the duckbill valve plate in one direction, forming a certain negative pressure. When the swing arm is pushed forward, the gas is discharged from the umbrella nail. At this time, the duckbill valve cannot discharge gas. The greater the discharge pressure, the tighter the duckbill valve closes, thus achieving the function of maintaining pressure at the air inlet. When it is necessary to discharge the pressure at the air inlet, the pin can be pressed.

[0037] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A vacuum pump for a vehicle-mounted mobile phone holder, characterized in that, have: The pump base is L-shaped. A cylindrical cavity is provided on one side of the pump base, and an air inlet is provided next to the cavity. A through hole is provided in the middle to facilitate the installation of a duckbill valve. An exhaust hole is provided on the other side. The motor has a cross-shaped shaft on one side; An eccentric wheel has a cross groove at one end, which is radially arranged on the cross shaft of the motor, and a cylindrical step off the center at the other end. The swing arm has a round end that is inserted into the cylindrical cavity of the pump bottom shell, and a square end that has a guide rail inside the square end. A large sealing ring is provided on the rocker arm; The pin is cylindrical, with a circular baffle at one end and a groove on one side of the baffle. A spring, one end of which is fitted onto a pin, and the other end of which is located inside the pump base; A duckbill valve is disposed inside the pump base housing; A small sealing ring is provided on the groove of the pin; The pump cover fits over the top of the pump base housing. One end of the cover has a through hole for the pin to pass through, and the other end has a groove with two through holes inside. Umbrella nails, which are umbrella-shaped, are set in the groove of the pump cover; The pump has a cavity on one side of the bottom shell, through which the rocker arm passes and extends into the base. One end of the eccentric wheel is connected to the cross shaft of the motor, and the other end is set in the guide rail of the rocker arm. When working, the motor drives the eccentric wheel to rotate, which in turn drives the rocker arm to move radially to form a sealed vacuum pumping environment. Compared with existing technologies, when the swing arm is stretched, the airflow flows into the cavity through the air inlet and passes through the duckbill valve plate in one direction, forming a certain negative pressure. When the swing arm is pushed forward, the gas is discharged from the umbrella nail. At this time, the duckbill valve cannot discharge gas. The greater the discharge pressure, the tighter the duckbill valve closes, thus achieving the function of maintaining pressure at the air inlet. When it is necessary to discharge the pressure at the air inlet, the pin can be pressed.

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