Negative pressure adsorption supporting device

Abstract

The utility model discloses a negative pressure adsorption supporting device which comprises a base body, a suction cup and a telescopic shaft, the suction cup is fixedly arranged on the base body, the telescopic shaft is arranged in the base body, one end of the telescopic shaft penetrates through the base body and extends into the suction cup, and the other end of the telescopic shaft extends into the suction cup. An elastic mechanism used for driving the telescopic shaft to be ejected out of the suction cup and a negative pressure pump used for sucking air into the suction cup are arranged in the base body, a first triggering mechanism and a second triggering mechanism which are sequentially arranged in the direction away from the suction cup are arranged on the telescopic shaft, and a sensor used for sensing the first triggering mechanism and the second triggering mechanism is arranged in the base body. The negative pressure pump and the sensor are electrically connected to a control panel, when the sensor senses the second trigger mechanism, the control panel controls the negative pressure pump to suck air, and when the sensor senses the first trigger mechanism, the control panel controls the negative pressure pump to stop sucking air. According to the utility model, the function of automatically adjusting the negative pressure adsorption force is realized, so that the adsorption stability and reliability are improved.

Description

Technical Field

[0001] The utility model relates to a supporting device, in particular to a negative pressure adsorption supporting device. Background Art

[0002] Many products need to rely on supporting components for support and fixation during use. For example, a vehicle-mounted bracket can adsorb and fix a mobile phone to the car console through a suction cup, and a portable small lamp can also be fixed to a wall, a desktop or various outdoor occasions through a suction cup. The existing suction cup type supporting device generally discharges the air in the suction cup by manual extrusion, and then uses the atmospheric pressure to press the suction cup against the adsorbed object. However, under the influence of the product gravity, especially in a shaking and vibrating environment such as in a vehicle, it is easy to occur situations such as air leakage at the suction surface, thereby reducing the suction effect and lacking adsorption stability and reliability. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a negative pressure adsorption supporting device that can automatically adjust the negative pressure adsorption force and improve the adsorption stability and reliability in view of the deficiencies of the prior art.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions.

[0005] A negative pressure adsorption supporting device includes a base body, a suction cup and a telescopic shaft. The suction cup is fixedly arranged on the base body. The telescopic shaft is arranged in the base body. One end of the telescopic shaft passes through the base body and extends into the suction cup. An elastic mechanism for driving the telescopic shaft to eject into the suction cup and a negative pressure pump for sucking air into the suction cup are arranged in the base body. A first trigger mechanism and a second trigger mechanism are arranged on the telescopic shaft in sequence along the direction away from the suction cup. A sensor for sensing the first trigger mechanism and the second trigger mechanism is arranged in the base body. The negative pressure pump and the sensor are respectively electrically connected to a control board. When the sensor senses the second trigger mechanism, the control board controls the negative pressure pump to suck air until the sensor senses the first trigger mechanism, and then the control board controls the negative pressure pump to stop sucking air.

[0006] Preferably, both the first trigger mechanism and the second trigger mechanism are magnets, and the sensor is a Hall sensor.

[0007] Preferably, a one-way valve is arranged in the base body. The air inlet end of the one-way valve is communicated with the inner side of the suction cup, and the air outlet end of the one-way valve is communicated with the suction end of the negative pressure pump.

[0008] Preferably, the base body includes an adsorption table surface, and the suction cup is fixed on the adsorption table surface.

[0009] Preferably, an air hole is provided on the adsorption table, and the air hole is connected between the air inlet end of the one-way valve and the suction cup.

[0010] Preferably, an end of the telescopic shaft located inside the suction cup is sleeved with an end cap.

[0011] Preferably, a sealing seat is fixed in the seat body, an axial hole is opened on the sealing seat, the telescopic shaft passes through the axial hole, and the two are sealed together.

[0012] Preferably, a sensor support is formed on the side of the sealing seat facing away from the seat body, and a sensor mounting port and a through hole are provided on the sensor support, the sensor mounting port and the through hole are connected to each other, the telescopic shaft passes through the through hole and the two are slidably fitted, the sensor is fixed in the sensor mounting port, and the sensing end of the sensor faces the telescopic shaft.

[0013] Preferably, a pressure relief valve is provided in the seat body, an air inlet of the pressure relief valve is connected to the air hole, and a switch mechanism for triggering the opening of the pressure relief valve is provided on the seat body.

[0014] Preferably, a sleeve is provided in the seat body, the elastic mechanism is a spring provided in the sleeve, the end of the telescopic shaft away from the suction cup is inserted into the sleeve, and the elastic mechanism elastically abuts against the end of the telescopic shaft.

[0015] In the negative pressure adsorption support device disclosed in the present utility model, the bottom of the suction cup is fixed on the base body, and when the suction cup is in contact with the adsorbed surface, the adsorbed surface presses against one end of the telescopic shaft located inside the suction cup, causing the telescopic shaft to retract into the base body; when the telescopic shaft retracts a certain distance so that the sensor senses the second trigger mechanism, the control board controls the negative pressure pump to draw air according to the sensing signal fed back by the sensor until the suction cup is adsorbed with the adsorbed surface; as the telescopic shaft gradually retracts, when the sensor senses the first trigger mechanism, the control board controls the negative pressure pump to stop drawing air, and at this time, sufficient vacuum is maintained in the suction cup so that the suction cup and the adsorbed surface are in a state of reliable adsorption. As time goes by or due to the influence of vibration environment factors, when air enters the suction cup, if the sensor senses the second trigger mechanism again, it controls the negative pressure pump to suck air again, until the sensor senses the first trigger mechanism, the control board controls the negative pressure pump to stop sucking air again, and repeats this process to realize the function of automatically adjusting the negative pressure adsorption force, thereby improving the adsorption stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional diagram of the negative pressure adsorption support device of the utility model;

[0017] Figure 2 This is the exploded view of the negative pressure adsorption support device of the present utility model;

[0018] Figure 3 This is the structural diagram of the first trigger mechanism, the second trigger mechanism and the sensor;

[0019] Figure 4 This is the structural diagram of the sensor and the sensor support;

[0020] Figure 5 This is the cross-sectional view of the negative pressure adsorption support device of the present utility model;

[0021] Figure 6 This is the exploded view of the suction cup. Specific embodiments

[0022] The present utility model will be described in more detail below with reference to the drawings and embodiments.

[0023] The present utility model discloses a negative pressure adsorption support device, as shown in combination with Figures 1 to 5 which includes a base body 1, a suction cup 2 and a telescopic shaft 3. The suction cup 2 is fixedly arranged on the base body 1. The telescopic shaft 3 is arranged in the base body 1. One end of the telescopic shaft 3 passes through the base body 1 and extends into the suction cup 2. An elastic mechanism 4 for driving the telescopic shaft 3 to eject into the suction cup 2 and a negative pressure pump 5 for sucking air into the suction cup 2 are arranged in the base body 1. A first trigger mechanism 30 and a second trigger mechanism 31 are arranged on the telescopic shaft 3 in sequence along the direction away from the suction cup 2. A sensor 6 for sensing the first trigger mechanism 30 and the second trigger mechanism 31 is arranged in the base body 1. The negative pressure pump 5 and the sensor 6 are respectively electrically connected to a control board 7. When the sensor 6 senses the second trigger mechanism 31, the control board 7 controls the negative pressure pump 5 to suck air until the sensor 6 senses the first trigger mechanism 30, and then the control board 7 controls the negative pressure pump 5 to stop sucking air.

[0024] In the above structure, the bottom of the suction cup 2 is fixed to the seat body 1. When the suction cup 2 is attached to the adsorbed surface, the adsorbed surface presses against one end of the telescopic shaft 3 within the suction cup 2, causing the telescopic shaft 3 to retract into the seat body 1. When the telescopic shaft 3 retracts a certain distance to enable the sensor 6 to sense the second triggering mechanism 31, the control board 7 controls the negative pressure pump 5 to suck air according to the induction signal fed back by the sensor 6 until the suction cup 2 sucks and adheres to the adsorbed surface. As the telescopic shaft 3 gradually retracts, when the sensor 6 senses the first triggering mechanism 30, the control board 7 controls the negative pressure pump 5 to stop sucking air. At this time, sufficient vacuum is maintained inside the suction cup 2 to enable the suction cup 2 to be in a reliable adsorption state with the adsorbed surface. As time goes by or due to the influence of the vibration environment, when air enters the suction cup 2, if the sensor 6 senses the second triggering mechanism 31 again, the negative pressure pump 5 is controlled to suck air again until the sensor 6 senses the first triggering mechanism 30, and then the control board 7 controls the negative pressure pump 5 to stop sucking air again. Repeating this process realizes the function of automatically adjusting the negative pressure adsorption force, thereby improving the adsorption stability and reliability.

[0025] In practical applications, as shown in Figures 2 to 4 For the type of the sensor 6 and the specific structures of the first and second triggering mechanisms, this embodiment can adopt various methods. For example, this embodiment preferably adopts the Hall induction method, that is: both the first triggering mechanism 30 and the second triggering mechanism 31 are magnets, and the sensor 6 is a Hall sensor. This Hall induction method has high sensitivity and helps to achieve accurate suction control.

[0026] In addition, in other embodiments of the present invention, the infrared induction method can also be adopted. For example, the sensor 6 can be an infrared pair tube sensor, and the first triggering mechanism 30 and the second triggering mechanism 31 can be openings located within the sensing area of the infrared pair tube sensor. When the infrared pair tube sensor senses the first and second openings, electrical signals can be generated correspondingly for the control board to control the negative pressure pump.

[0027] As can be seen from the above two implementation manners, the present invention can adopt the Hall or photoelectric induction method to achieve triggering. However, in practical applications, it is not limited to these two methods. Even if it is replaced with other induction methods with the same function, it still belongs to the protection scope of the present invention.

[0028] As a preferred embodiment, a check valve is provided inside the base body 1. The air inlet end of the check valve is communicated with the inner side of the suction cup 2, and the air outlet end of the check valve is communicated with the suction end of the negative pressure pump 5. The function of setting the check valve in this embodiment is that when the negative pressure pump 5 sucks air into the suction cup 2, the check valve is naturally opened under the action of the air flow. When the negative pressure pump 5 stops sucking, the check valve is in a check state, thereby closing the air suction channel of the suction cup 2 and maintaining sufficient vacuum in the suction cup 2.

[0029] Please refer to Figure 2 , in order to reliably fix the suction cup 2, in this embodiment, the base body 1 includes a suction table surface 10, and the suction cup 2 is fixed on the suction table surface 10.

[0030] Furthermore, air holes 11 are formed on the suction table surface 10, and the air holes 11 are communicated between the air inlet end of the check valve and the suction cup 2. In this embodiment, the air holes 11 are preferably close to the center position of the suction cup 2.

[0031] Please refer to Figure 6 , in this embodiment, the suction cup 2 includes a hard disk body 20 and a soft rubber disk body 21. The soft rubber disk body 21 is attached to the front side of the hard disk body 20, and a wrapping edge portion 22 is formed at the edge of the soft rubber disk body 21. The wrapping edge portion 22 covers the edge of the hard disk body 20. Among them, in this embodiment, the combination of the hard disk body 20 and the soft rubber disk body 21 is preferably adopted. The hard disk body 20 is used to provide sufficient pressing ability, and the soft rubber disk body 21 can be a disk body made of easily deformable silicone material. Based on the combined action of the hard disk body 20 and the soft rubber disk body 21, the suction cup 2 can adsorb on various planes, such as various somewhat rough planes like stone, leather, plastic, etc.

[0032] Please refer to Figure 1 , Figure 2 and Figure 5 , in this embodiment, a end cap 32 is sleeved on one end of the telescopic shaft 3 located inside the suction cup 2. Among them, the diameter of the end cap 32 is slightly larger than the diameter of the telescopic shaft 3, and the end of the end cap 32 is relatively smooth. The function of the end cap 32 is to better transmit the pressure from the adsorbed surface, thereby driving the telescopic shaft 3 to retract better into the base body 1.

[0033] To seal the penetration position of the telescopic shaft 3, in this embodiment, a sealing seat 8 is fixed inside the seat body 1. An axial hole 80 is formed in the sealing seat 8, and the telescopic shaft 3 passes through the axial hole 80 and the two are in sealing fit. Among them, there is a relationship of both sliding fit and sealing fit between the telescopic shaft 3 and the axial hole 80, which can not only ensure the good telescopic movement of the telescopic shaft 3 but also prevent air leakage.

[0034] Please refer to Figure 2 and Figure 3 , a sensor support 9 is formed on one side of the sealing seat 8 facing away from the seat body 1. A sensor mounting port 90 and a through hole are formed in the sensor support 9. The sensor mounting port 90 and the through hole communicate with each other. The telescopic shaft 3 passes through the through hole and the two are in sliding fit. The sensor 6 is fixed in the sensor mounting port 90, and the sensing end of the sensor 6 faces the telescopic shaft 3. Based on the above structure, in this embodiment, the sensor 6 can be reliably fixed and the sensor 6 can be well matched with the telescopic shaft 3 to ensure that the sensor 6 accurately senses the first and second triggering mechanisms.

[0035] When it is necessary to separate the suction cup 2 from the adsorbed surface, in this embodiment, a pressure relief valve 12 is provided inside the seat body 1. The air inlet of the pressure relief valve 12 is communicated with the air hole 11, and a switch mechanism 13 for triggering the opening of the pressure relief valve 12 is provided on the seat body 1.

[0036] As a preferred method, please refer to Figure 5 , a sleeve 14 is provided inside the seat body 1. The elastic mechanism 4 is a spring provided inside the sleeve 14. One end of the telescopic shaft 3 away from the suction cup 2 is inserted into the sleeve 14, and the elastic mechanism 4 elastically abuts against the end of the telescopic shaft 3. Among them, a step 140 for abutting against the telescopic shaft 3 is provided inside the sleeve 14.

[0037] The negative pressure adsorption support device disclosed by the present utility model can be applied to occasions such as a vehicle-mounted wireless charging mobile phone holder or an outdoor lamp in practical applications. Taking the vehicle-mounted wireless charging mobile phone holder as an example, the bottom of the seat body 1 can be directly fixed to the car console through pasting or suction cup adsorption. The suction cup 2 on the top of the seat body 1 can be used to adsorb the mobile phone, and a wireless charging coil 15 can be arranged inside the top of the seat body 1. Then, while the suction cup 2 adsorbs the mobile phone, the mobile phone can be wirelessly charged by using the wireless charging coil 15. The above structure of the mobile phone holder is only an application example, and in practical applications, it is not limited to vehicle-mounted holders, that is, the present utility model can be applied to many products with similar negative pressure adsorption functions.

[0038] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the technical scope of the present utility model shall be included within the scope protected by the present utility model.

Claims

1. A negative pressure adsorption support device, characterized in that, It includes a base body (1), a suction cup (2) and a telescopic shaft (3). The suction cup (2) is fixedly arranged on the base body (1). The telescopic shaft (3) is arranged inside the base body (1). One end of the telescopic shaft (3) passes through the base body (1) and extends into the suction cup (2). An elastic mechanism (4) for driving the telescopic shaft (3) to eject into the suction cup (2) and a negative pressure pump (5) for sucking air into the suction cup (2) are arranged inside the base body (1). A first trigger mechanism (30) and a second trigger mechanism (31) are arranged on the telescopic shaft (3) in sequence along the direction away from the suction cup (2). A sensor (6) for sensing the first trigger mechanism (30) and the second trigger mechanism (31) is arranged inside the base body (1). The negative pressure pump (5) and the sensor (6) are respectively electrically connected to a control board (7). When the sensor (6) senses the second trigger mechanism (31), the control board (7) controls the negative pressure pump (5) to suck air until the sensor (6) senses the first trigger mechanism (30), and then the control board (7) controls the negative pressure pump (5) to stop sucking air.

2. The negative pressure adsorption support device according to claim 1, wherein Both the first trigger mechanism (30) and the second trigger mechanism (31) are magnets, and the sensor (6) is a Hall sensor.

3. The negative pressure adsorption support device according to claim 1, wherein A one-way valve is arranged inside the base body (1). The air inlet end of the one-way valve is communicated with the inner side of the suction cup (2), and the air outlet end of the one-way valve is communicated with the suction end of the negative pressure pump (5).

4. The negative pressure adsorption and support device according to claim 3, wherein The base body (1) includes an adsorption tabletop (10). The suction cup (2) is fixed on the adsorption tabletop (10). An air hole (11) is formed on the adsorption tabletop (10), and the air hole (11) is communicated between the air inlet end of the one-way valve and the suction cup (2).

5. The negative pressure adsorption and support device according to claim 1, characterized in that, The suction cup (2) includes a hard disk body (20) and a soft rubber disk body (21). The soft rubber disk body (21) is attached to the front side of the hard disk body (20). A wrapping edge part (22) is formed at the edge of the soft rubber disk body (21), and the wrapping edge part (22) wraps the edge of the hard disk body (20).

6. The negative pressure adsorption support device according to claim 1, characterized in that A end cap (32) is sleeved on one end of the telescopic shaft (3) located inside the suction cup (2).

7. The negative pressure adsorption and support device according to claim 1, characterized in that A sealing seat (8) is fixed inside the base body (1). A shaft hole (80) is formed on the sealing seat (8). The telescopic shaft (3) passes through the shaft hole (80) and the two are in sealed cooperation.

8. The negative pressure adsorption and support device according to claim 7, wherein, A sensor support (9) is formed on one side of the sealing seat (8) facing away from the base body (1). A sensor installation port (90) and a through hole are formed on the sensor support (9). The sensor installation port (90) and the through hole are communicated with each other. The telescopic shaft (3) passes through the through hole and the two are in sliding cooperation. The sensor (6) is fixed inside the sensor installation port (90), and the sensing end of the sensor (6) faces the telescopic shaft (3).

9. The negative pressure adsorption support device according to claim 4, wherein A pressure relief valve (12) is provided inside the base body (1). The air inlet of the pressure relief valve (12) is communicated with the air hole (11), and a switch mechanism (13) for triggering the opening of the pressure relief valve (12) is provided on the base body (1).

10. The negative pressure adsorption support device according to claim 1, characterized in that, A sleeve (14) is provided inside the base body (1). The elastic mechanism (4) is a spring provided inside the sleeve (14). One end of the telescopic shaft (3) away from the suction cup (2) is inserted into the sleeve (14), and the elastic mechanism (4) elastically abuts against the end of the telescopic shaft (3).

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