CN219931456U - Electric vacuumizing sucker handrail - Google Patents

Abstract

The utility model discloses an electric vacuumizing sucker handrail, which comprises a handle and a sucker, wherein two ends of the handle are respectively provided with: the electric air extraction unit is coaxially arranged with the handle and penetrates through the hollow space in the handle; sucking air of the sealing chamber communicated with the space in the sucker to the atmosphere through the sucking action of the air suction motor, and closing the sealing chamber after the vacuum degree in the sucker meets the installation requirement of the handrail; the air release unit is coaxially arranged with the handle, penetrates through the hollow space in the handle and is arranged at the opposite end of the electric air suction unit; the space in the sucker is communicated with the sealing cavity through the multi-channel assembly, and the sucker is selectively deflated through the lever assembly until the handrail falls off. According to the utility model, through the arrangement of the electric air extraction unit, the motor can be shut down after air extraction is finished and the vacuum degree requirement of installation is met; through set up the gassing unit at the gassing unit handle contralateral side, not only can effectively balance the gravity at handle both ends, can also effectively improve the security when handrail uses through the gassing unit.

Description

Electric vacuumizing sucker handrail

Technical Field

The utility model relates to the technical field of armrests capable of being adsorbed on smooth surfaces, in particular to an electric vacuumizing sucker armrest.

Background

Because the bathroom and the bathroom are wet and slippery on the ground, handrails are sometimes required to be mounted on the wall surface, and most of traditional handrails are made of metal products, so that bolts are required to be mounted on the wall for fixing the handrails. The fixed installation mode is inconvenient to install, and is difficult to remove in the later stage and easy to damage the wall. In addition, for old people with inconvenient actions, pregnant women near the premature period and people in the recovery process of serious illness, handrails are sometimes required to be used at different positions, so that the fixed handrails cannot fundamentally solve the problems, and sudden falling is often caused because the fixed handrails are not supported when standing, rising or moving.

At present, the prior art also has the principle of vacuumizing, wherein the contact part of the handrail and the wall is set as a sucker, and the handrail is directly adsorbed on the wall by sucking the air in the space formed by enclosing the sucker and the adsorption surface. When the armrest is used, air between the sucker and the adsorption surface needs to be exhausted, so that the air and the external atmosphere generate negative pressure to adsorb the sucker on the adsorbed surface, and the vacuum negative pressure state in the sucker needs to be always kept.

For example, chinese patent application CN112900765a discloses a portable electric adsorption armrest, comprising a handle with a hollow chamber inside; the suction cup is arranged at two ends of the handle, and the driving part is arranged in the empty chamber; the upper end of the sucker is provided with a fixed seat, and the handle is connected with the fixed seat; the driving part comprises a power supply, a gas supply mechanism and a damping mechanism, and the power supply is positioned at one end in the air chamber; the air supply mechanism comprises an air pump and an air storage chamber, the air pump is connected with the air storage chamber, an air pipe is arranged below the air storage chamber, and two ends of the air pipe penetrate through the damping mechanism and then are connected with the sucker; the cushioning mechanism is arranged at two ends of the empty chamber and is used for reducing the influence of vibration of the sucker on the mechanism inside the handle. In this scheme, although the combination of aspiration pump and air receiver can guarantee the effective actuation of sucking disc and contact surface, but the pump body needs to continue the operation in order to guarantee that the sucking disc is in vacuum negative pressure state all the time in the use, in case the pump stop work, the handrail can drop from the adsorption surface in the twinkling of an eye, consequently the security also can not effectively guarantee.

Therefore, there is a need for an electric vacuum chuck armrest that maximizes the safety of the armrest in use.

The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide an electric vacuumizing sucker handrail, which can stop a motor after air extraction is finished and the vacuum degree requirement of installation is met through the arrangement of an electric air extraction unit; through set up the gassing unit at the gassing unit handle contralateral side, not only can effectively balance the gravity at handle both ends, can also effectively improve the security when handrail uses through the gassing unit.

In order to achieve the above purpose, the utility model provides an electric vacuumizing sucker handrail, which comprises a handle and a sucker, wherein two ends of the handle are respectively provided with: the electric air extraction unit is coaxially arranged with the handle and penetrates through the hollow space in the handle; sucking air of the sealing chamber communicated with the space in the sucker to the atmosphere through the sucking action of the air suction motor, and closing the sealing chamber after the vacuum degree in the sucker meets the installation requirement of the handrail; the air release unit is coaxially arranged with the handle, penetrates through the hollow space in the handle and is arranged at the opposite end of the electric air suction unit; the space in the sucker is communicated with the sealing cavity through the multi-channel assembly, and the sucker is selectively deflated through the lever assembly until the handrail falls off.

Further, in the above technical solution, the multi-channel assembly may be a multi-channel structure set according to the number of the suction cups; the first channel in the multi-way structure is communicated with the sealing cavity, the second channel is provided with a plug, the plug is connected with the lever assembly and used for selectively deflating, and the other channels are communicated with the space in each sucker through hoses which are respectively arranged.

Furthermore, in the above technical solution, the number of the sucking discs may be two and symmetrically arranged at two ends of the handle; the multi-way structure is a four-way structure, wherein two channels are respectively communicated with the space in the corresponding sucker through hoses.

Further, in the above technical scheme, the outlet end of the first channel stretches into the inner wall of the sealed cavity and keeps a communication state with the sealed cavity all the time, a sealing plug is arranged on the opposite side of the inner wall, a through hole matched with the position and the size of the extraction opening of the motor is formed in the sealing plug, an air valve assembly is arranged in the through hole, the air valve is in an open state in the extraction process, and the air valve is in a closed state through air pressure difference on two sides of the air valve after the extraction is finished.

Further, in the above technical solution, the valve assembly may include: the valve pad is made of rubber and is arranged in the through hole on the sealing plug; an arc through hole is arranged on the valve pad, a valve opening and closing part below the arc through hole is constructed through the arc through hole, and the direction of the valve opening and closing part towards the motor extraction opening is in an elastic free state; and the valve pressing piece is in interference fit with the through hole on the sealing plug and limits the movement of the valve opening and closing part towards one side of the sealing chamber.

Further, in the above technical solution, the electric air extracting unit may include: the air suction motor is used for providing air suction power for the sealed cavity communicated with the space in the sucker; the lithium battery is electrically connected with the air extraction motor and is used for providing power output; the control PCB is used for conducting the lithium battery with the air extraction motor through pushing and pressing the air extraction button, and closing the air extraction motor through long-time pressing of the air extraction button after air extraction is finished; the handle shell part at the installation position of the control PCB is made of transparent or semitransparent materials.

Further, in the above technical solution, the air extracting unit may further include: the air pressure sensor is in signal connection with the control PCB and is arranged in the sealing cavity and used for monitoring the vacuum degree in the space in the sucker in real time; when the air pressure in the space in the sucker is in different preset value intervals, the color of the indicator lamp arranged on the control PCB is judged.

Further, in the above technical solution, the lever assembly may include: one end of the lever sheet is fixedly connected with the plug, and the other end of the lever sheet is provided with an inclined surface which is used for applying axial pressing thrust to lift the plug; the lever support position is sleeved with a section of pressure spring.

Further, in the above technical solution, the lever assembly further includes: and a deflation button arranged outside the inclined surface, wherein the inner end part of the rod-shaped element touches the inclined surface and forms pressing when the deflation button is pressed by a structure of sleeving a spring on the rod-shaped element.

Further, in the above-described solution, in the non-deflated state, the inner end of the rod-like element may be provided with a safety distance from the inclined surface.

Compared with the prior art, the utility model has the following beneficial effects:

1) According to the utility model, the air discharging unit is arranged on the opposite side of the air extracting unit handle, so that the gravity at two ends of the handle can be effectively balanced, and the safety problem in the use process caused by lack of an active air discharging facility in the prior art can be effectively avoided;

2) The components used in the electric air extraction unit occupy small space, so that the space in the handle is easier to arrange;

3) According to the utility model, through the multi-channel structure arranged in the air release unit, a part of channels can be shared to the greatest extent in the air release process and the air release process, so that the occupied space is further reduced;

4) According to the utility model, the sealed cavity and the multi-channel structure can be always communicated through the design of the valve pad and the valve pressing piece, and the valve can be automatically closed after air extraction is finished, so that the valve pressing piece is ingenious in design and durable;

5) The lever assembly used in the deflation unit can conveniently and effectively realize active deflation, so that the safety is greatly improved, the armrests can be rapidly disassembled, and the switching of different use positions is realized;

6) According to the utility model, the safety distance is arranged between the deflation button and the stressed part of the lever, so that potential safety hazards caused by mistakenly touching the deflation button by a handrail user can be effectively avoided;

7) The utility model can observe the change of the indicator lamp through the transparent or semitransparent window at the installation position of the control PCB, ensure the vacuum degree required in the sucker in the air suction and use process, and can master the residual electric quantity of the lithium battery in real time.

The foregoing description is only an overview of the present utility model, and it is to be understood that it is intended to provide a more clear understanding of the technical means of the present utility model and to enable the technical means to be carried out in accordance with the contents of the specification, while at the same time providing a more complete understanding of the above and other objects, features and advantages of the present utility model, and one or more preferred embodiments thereof are set forth below, together with the detailed description given below, along with the accompanying drawings.

Drawings

Fig. 1 is an overall view of the exterior of the motorized vacuum chuck arm rest of the present utility model.

Fig. 2 is an overall exploded view of the motorized vacuum cup arm rest of the present utility model.

Figure 3 is an overall exploded view of the motorized air extractor unit of the motorized vacuum chuck arm rest of the present utility model.

Fig. 4 is a partial view of fig. 3 (dashed arrows in the figure indicate the direction of air flow during evacuation).

Fig. 5 is a longitudinal cross-sectional view of an electrically powered suction unit in an electrically powered vacuum chuck armrest of the present utility model.

Figure 6 is a first overall longitudinal section view (cut-away position at the handle axis) of the motorized vacuum cup arm rest of the present utility model.

Figure 7 is a second overall longitudinal cross-sectional view of the motorized vacuum cup arm rest of the present utility model (the cut-away position being at the location of the axis of the valve assembly; the dashed arrow in the figure indicates the direction of air flow during evacuation).

Figure 8 is an isometric view of the exterior of the deflation unit in the vacuum chuck handrail of the present utility model.

Figure 9 is a longitudinal cross-sectional view of the deflation unit in the vacuum cup handrail of the present utility model (dashed arrows in the figure indicate the direction of air flow during evacuation, solid arrows indicate the deflation direction).

The main reference numerals illustrate:

100-vacuum sucker handrails, 101-handles, 102-sucker housings, 103-rubber chassis, 104-handle covers, 105-handle hollow spaces, 105A-sealed chambers;

the device comprises a 1-electric air extraction unit, a 10-lithium battery charging port, a 11-sealing plug, a 111-valve pad, a 111A-arc through hole, a 111B-valve opening and closing part, a 112-valve pressing piece, a 11A-sealing plug rear mounting plate, a 11B-sealing plug front mounting plate, a 12-sensor PCB (printed circuit board), a 121-air pressure sensor, a 13-air extraction motor, a 131-air extraction port, a 132-air extraction port, a 14-battery compartment, a 15-lithium battery, a 16-handle cover, a 17-control PCB and an 18-air extraction button; 2-deflating units, 21-plugs, 22-four-way, 22A-first channel, 22B-second channel, 22C-third channel, 22D-fourth channel, 23-lever piece, 230-inclined surface, 24-pressure spring, 25-deflating button, 26-spring; 5-through, 51-first hose, 52-second hose; 6-round head screw and 7-self-tapping screw.

Detailed Description

The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or other components.

Spatially relative terms, such as "below," "beneath," "lower," "above," "upper," and the like, may be used herein for ease of description to describe one element's or feature's relationship to another element's or feature's in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the article in use or operation in addition to the orientation depicted in the figures. For example, if the article in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the elements or features. Thus, the exemplary term "below" may encompass both a direction of below and a direction of above. The article may have other orientations (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terms "first," "second," and the like herein are used for distinguishing between two different elements or regions and are not intended to limit a particular position or relative relationship. In other words, in some embodiments, the terms "first," "second," etc. may also be interchanged with one another.

As shown in fig. 1 to 7, the present utility model provides an electric vacuum suction cup armrest 100, which comprises a handle 101 and a suction cup (assembled by a suction cup housing 102 and a rubber chassis 103, refer to fig. 1), wherein the suction cup can be adsorbed on a smooth surface of a ceramic tile, glass or the like, and the handle is used as an armrest and has a hollow structure therein. The electric air extracting unit 1 and the air discharging unit 2 are respectively inserted into the hollow structures at the two ends of the handle 101. The electric air pumping unit 1 is coaxially arranged with the handle 101 and penetrates through the hollow space 105 (refer to fig. 2) in the handle, and pumps air of the sealing chamber 105A (refer to fig. 6 and 7) communicated with the space in the sucker to the atmosphere through the pumping action of the air pumping motor, and closes the sealing chamber 105A after the vacuum degree in the sucker meets the installation requirement of the handrail, and maintains the stable vacuum degree in the sucker in the use process of the handrail after the sealing chamber is closed. The air release unit 2 is also coaxially arranged with the handle 101, penetrates through the hollow space in the handle, is arranged at the opposite end (namely the other end) of the electric air suction unit 1, can communicate the space in the sucker with the sealing cavity 105A through the multi-channel component arranged in the air release unit, and can selectively release air in the sucker through the lever component until the handrail falls off. The electric air suction unit 1 is used for sucking air existing in the sucker in the installation process of the handrail 100 before use until the vacuum degree in the sucker meets the suction requirement; the air release unit 2 is used for releasing the air into the sucker to eliminate the pressure difference between the inside and the outside of the sucker when the armrest 100 needs to be disassembled after use.

The electric air extraction unit has small occupied space of parts, so that the space in the handle is easier to arrange; by arranging the air discharging unit on the opposite side of the air discharging unit handle, the gravity at two ends of the handle can be effectively balanced, and the safety problem in the using process caused by the lack of an active air discharging facility in the prior art (for example, the air sucking pump described in the background art part needs to continuously work in the using process so as to increase potential safety hazards and has higher energy consumption) can be effectively avoided, and the safety of the handrail in use can be effectively improved through the air discharging unit.

As further shown in fig. 6 and 9, the present utility model provides for suction and deflation control within the suction cup through multiple passages of the multi-channel assembly. Specifically, the multi-channel assembly is a multi-channel structure provided according to the number of suction cups, and may be provided in the deflation unit 2. At least one channel (i.e. the first channel) in the multi-way structure is always communicated with the sealing cavity 105A, the other channel (i.e. the second channel, which is provided with air holes in the figure) is provided with a plug 21 (refer to fig. 6, 8 and 9), the plug 21 is connected with the lever assembly and used for lifting the plug 21 to selectively deflate when the lever is pried, and other channels can be communicated with the space in each sucker through hoses which are respectively arranged. Taking two suction cups as an example in fig. 1, namely, the number of suction cups is two and the suction cups are symmetrically arranged at two ends of the handle, namely, when the number of suction cups is two, the multi-way structure of the utility model is arranged as a four-way structure 22 in the figure, and comprises a third channel 22C and a fourth channel 22D (refer to fig. 9) besides the first channel 22A and the second channel 22B, and the two channels are respectively communicated with the space in the corresponding suction cups through a first hose 51 and a second hose 52 (refer to fig. 6). When the number of the sucking discs is one or more than two, the multichannel structure can be correspondingly adjusted to be a three-way structure or a five-way structure or a structure with more than five-way structure.

As further shown in fig. 6 and 7, since the multi-channel structure is a gas path structure common to two different stages of gas extraction and gas discharge, the sealed chamber 105A associated with the electric gas extraction unit 1 can be always in a communicating state although it is provided in the gas discharge unit 2. Specifically, the outlet end of the first channel 22A extends into the inner wall of the sealing chamber 105A, the opposite side of the inner wall is provided with a sealing plug 11 (that is, the space between the sealing plug 11 and the inner wall forms the sealing chamber 105A), a through hole (refer to fig. 4) with the position and the size matched with those of the motor extraction opening 131 is formed in the sealing plug 11, an air valve assembly is arranged in the through hole, the air valve is in an open state in the air extraction process, and the air valve is in a closed state after the air extraction is finished through the air pressure difference at two sides of the air valve. As further shown in fig. 4 and 7, the valve assembly preferably, but not by way of limitation, includes a valve pad 111 and a valve press plate 112. The valve pad 111 may be made of soft material such as rubber and disposed in the through hole of the sealing plug 11. As further shown in fig. 4 and 7, the valve pad 111 is provided with an arc-shaped through hole 111A, through which the valve opening and closing part 111B below the through hole can be constructed, and because the valve pad 111 is made of soft materials, when there is a pressure difference between two sides of the valve pad, the arc-shaped part (i.e. the valve opening and closing part 111B) below the arc-shaped through hole 111A can swing towards one side of the motor extraction opening 131, and the valve is in an open state at this time; when the air suction is completed, the negative pressure at the side of the motor air suction opening 131 disappears (is the same as the atmospheric pressure), and at this time, the air in the sealed chamber 105A (communicated with the space in the suction cup) is sucked out, and the internal air pressure is lower than the atmospheric pressure, so that the swing of the valve opening and closing part 111B in the opposite direction is limited, and the air pressure in the sealed chamber 105A can be kept unchanged (namely, the vacuum degree of the space in the suction cup is kept) after the motor is closed after the electric air suction is realized. As further shown in fig. 4 and 7, in order to limit the swing of the valve opening and closing part 111B of the valve pad 111 in the opposite direction, the valve pressing piece 112 is disposed in the through hole of the sealing plug 11, and the valve pressing piece 112 is in interference fit with the through hole on the sealing plug 11, so that the valve pad 111 can be clamped and limited in the through hole, and only the swing of the valve opening and closing part 111B towards the side of the motor extraction opening 131 is allowed after clamping, namely, the swing towards the side of the sealing chamber 105A is limited.

The relevant components and the operation principle of the electric air extraction unit 1 and the air discharge unit 2 according to the present utility model will be described in detail with reference to specific configurations.

As shown in fig. 3 to 7, the electric pumping unit 1 of the present utility model includes a sensor PCB 12, a lithium battery 15, a control PCB 17, a pumping button 18, etc. in addition to the aforementioned sealing plug 11, a pumping motor 13 for providing pumping power to a sealed chamber communicating with the space inside the suction cup. In order to ensure the stability of the space dimension in the sealing cavity 105A, the two sides of the sealing ring 11 are respectively provided with a sealing plug front mounting plate 11B and a sealing plug rear mounting plate 11A, the sealing plugs are clamped by the two mounting plates, and the clamped whole is fixedly connected with the sensor PCB 12 and the air exhaust motor 13. The lithium battery 15 is installed in the battery compartment 14, and battery compartment 14 one side is used for wholly holding lithium battery 15, and the opposite side is then used for holding a part of motor 13 that bleeds, referring to fig. 3, 13 ladder department rear portions of motor are inserted and are established in battery compartment 14 for when pressing the button 18 that bleeds, make things convenient for lithium battery 15 and 13 electricity to be connected and realize switching on and provide power output for the motor that bleeds. Further, the control PCB 17 can control the conduction of the lithium battery 15 and the air extraction motor 13 through the pushing of the air extraction button 18, and can close the air extraction motor 13 through long-time pressing of the air extraction button 18 after air extraction is finished; preferably, but not by way of limitation, the handle housing portion (i.e., handle cover 16) at the mounting location of the control PCB board may be of transparent or translucent material. The sensor PCB 12 is provided with an air pressure sensor 121, and the air pressure sensor 121 is in signal connection with the control PCB 17 and is arranged in the sealing chamber 105A for monitoring the vacuum degree in the space in the sucker in real time (the sealing chamber 105A and the space in the sucker are always in a communicating state); when the air pressure in the space in the sucker is in different preset value intervals, the color of the indicator lamp arranged on the control PCB 17 can be judged. For example, by pressing the air extraction button 18 to make the motor work, the air pressure sensor 121 on the sensor PCB 12 can sense the air pressure in the suction cup space, when the vacuum exceeds the first preset value (the vacuum is higher and the installation requirement is met), the indicator light on the PCB is controlled to light up the green light, and the air extraction motor stops running automatically; a trace amount of air leakage condition can exist after air suction, so a second preset value (the vacuum degree is lower at the moment and potential safety hazard exists) is set, and when the vacuum degree is between the first preset value and the second preset value, the indicator light is still in a long-time green light-on state; when the vacuum degree is smaller than a second preset value, the red light is always on, the air extraction motor works again until the vacuum degree exceeds the first preset value again, and so on; when the lithium battery is low in electric quantity, the red light flashes to indicate that the electric quantity is low, and the smaller the electric quantity is, the faster the flash is (at this time, the lithium battery needs to be charged through the charging port 10 in fig. 1). Since the transparent or translucent handle cover 16 is provided at the mounting position of the control PCB 18, the change of the indication lamp can be observed from the handle cover 16. The present utility model sets the pump down button 18 to turn off the pump down motor in a long press state.

The specific action process and working principle of the electric air extraction unit 1 are as follows:

under the pressing action of the air extraction button 18, the lithium battery 15 is conducted with the air extraction motor 13 through the control PCB 17, the air extraction motor 13 is started to start air extraction, at the moment, the motor air extraction opening 131 is in a negative pressure state, the valve opening and closing part 111B of the valve pad 111 swings and opens towards the motor air extraction opening 131, and air in the sealing cavity 105A is extracted to enter the motor air extraction opening 131 and flow along a gas path in the motor to finally be discharged into the atmosphere from the motor air outlet 132. After the air pressure in the sealing chamber 105A is gradually extracted and the vacuum degree required by the formation of the space in the sucker communicated with the sealing chamber is formed, the handrail is adsorbed on a smooth adsorption surface such as a wall, and at the moment, the motor is closed by long-time pressing of the air exhaust button 18, and the reverse swing of the valve opening and closing part 111B of the valve pad 111 is limited by the valve pressing 112, so that after the air exhaust process is finished and the air exhaust motor is closed, the stable vacuum degree can be ensured in the sucker through the sealing function of the sealing plug 11, and the handrail can be normally used.

The deflation unit 2 will be described in detail below. As shown in fig. 8 and 9, in addition to the four-way joint 22 and the plug 21, the deflation unit 2 of the present utility model is further provided with a lever assembly connected to the plug 21. The lever assembly specifically includes a lever piece 23, one end of the lever piece 23 is fixedly connected with the plug 21, and the other end has an inclined surface 230, and the inclined surface 230 is used for applying axial pressing thrust to lift the plug 21 at the other end. A section of pressure spring 24 is sleeved at the lever supporting position. The power of the lever comes from the pressing of the air release button 25, the air release button 25 is arranged on the outer side of the inclined surface 230, and the structure of the spring 26 is sleeved on the rod-shaped element of the button, so that the inner end part of the rod-shaped element touches the inclined surface and forms pressing while the air release button 25 is pressed, and then the prying plug 21 moves upwards, so that the opening of the second channel 22B (namely an air hole) of the four-way valve 22 is realized, and the air release process in the sucker is completed (refer to the air flow trend indication of a solid arrow in fig. 9). Further, preferably, but not by way of limitation, in order to avoid the release of air during the use of the armrest caused by the false touching of the release button 25, the present utility model provides a safety distance between the inner end of the rod-shaped element of the release button 25 and the inclined surface in the non-release state, i.e. a release button with a long stroke is implemented, so that even if the user of the armrest touches the release button 25 by mistake, the release safety hazard of the armrest caused by the release of the suction cup is not caused.

Further, preferably, but not limited to, the electric vacuumizing sucker handrail of the present utility model can be provided with a display screen (not shown) for displaying vacuum degree and/or suction force data in the sucker in real time, besides judging the air pressure state in the sucker space and the residual power of the lithium battery through the indicator lamp, so that whether the handrail is safe or not can be more intuitively observed before the handrail is used. The displayed data can be vacuum degree data, and the vacuum degree data can be converted into suction force data of the sucker, so that pressure data which can be born by the handrail can be observed more intuitively and in real time. The display screen can be arranged at any position on the surface of the handle or the sucker, which is easy to observe.

According to the electric vacuumizing sucker handrail, the air extraction unit occupies a small space through compact and ingenious structural design; through the multi-channel structure arranged in the air release unit, a part of the channels can be shared to the greatest extent in the air extraction process and the air release process, and the space in the handle is further saved; the design of the valve pad and the valve pressing sheet can always keep the sealed cavity and the multi-channel structure communicated, and the valve can be automatically closed after the air extraction is finished, so that the valve pad is ingenious in design and durable; the lever assembly used in the air release unit can conveniently and effectively realize active air release, so that the safety is greatly improved, the armrests can be rapidly disassembled, and the switching of different using positions is realized; by arranging the safety distance between the deflation button and the stressed part of the lever, the potential safety hazard caused by the fact that a user of the armrest bumps the deflation button by mistake can be effectively avoided; the change of the indicator lamp can be observed through the transparent or semitransparent window at the installation position of the control PCB, so that the vacuum degree required in the sucker in the air suction and use processes is ensured.

The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. Any simple modifications, equivalent variations and modifications of the above-described exemplary embodiments should fall within the scope of the present utility model.

Claims (10)

1. The utility model provides an electronic evacuation sucking disc handrail, includes handle and sucking disc, its characterized in that, the handle both ends are equipped with respectively:

the electric air extraction unit is coaxially arranged with the handle and penetrates through the hollow space in the handle; sucking air of a sealing chamber communicated with the space in the sucker to the atmosphere through the sucking action of the air suction motor, and closing the sealing chamber after the vacuum degree in the sucker meets the installation requirement of the handrail;

the air discharging unit is coaxially arranged with the handle, penetrates through the hollow space in the handle and is arranged at the opposite end of the electric air extracting unit; the space in the sucker is communicated with the sealing cavity through the multi-channel assembly, and the sucker is selectively deflated through the lever assembly until the handrail falls off.

2. The motorized vacuum chuck handrail of claim 1, wherein the multi-channel assembly is a multi-pass structure configured according to the number of chucks; the first channel in the multi-way structure is communicated with the sealing cavity, the second channel is provided with a plug, the plug is connected with the lever assembly and used for selectively deflating, and the other channels are communicated with the space in each sucker through hoses which are respectively arranged.

3. The electric vacuumizing sucker handrail according to claim 2, wherein the number of suckers is two and the suckers are symmetrically arranged at two ends of the handle; the multi-way structure is a four-way structure, wherein two channels are respectively communicated with the space in the corresponding sucker through the hose.

4. The electric vacuumizing sucker handrail according to claim 2, wherein the outlet end of the first channel extends into the inner wall of the sealing chamber and is always communicated with the sealing chamber, a sealing plug is arranged on the opposite side of the inner wall, a through hole matched with the position and the size of the vacuumizing hole of the motor is formed in the sealing plug, an air valve assembly is arranged in the through hole, the air valve is in an open state in the vacuumizing process, and the air valve is in a closed state through air pressure difference on two sides of the air valve after the vacuumizing process is finished.

5. The motorized vacuum chuck armrest according to claim 4, wherein the valve assembly comprises:

the valve pad is made of rubber and is arranged in the through hole; the valve pad is provided with an arc through hole, a valve opening and closing part below the arc through hole is constructed through the arc through hole, and the direction of the valve opening and closing part towards the motor extraction opening is in an elastic free state;

and the valve pressing piece is in interference fit with the through hole on the sealing plug and limits the movement of the valve opening and closing part towards one side of the sealing cavity.

6. The motorized vacuum chuck handrail of claim 1, wherein the motorized air extraction unit comprises:

the air suction motor is used for providing air suction power for the sealed cavity communicated with the space in the sucker;

the lithium battery is electrically connected with the air extraction motor and is used for providing power output;

the control PCB is used for conducting the lithium battery and the air exhaust motor through pushing and pressing the air exhaust button, and the air exhaust motor is turned off through long-time pressing of the air exhaust button after air exhaust is finished; the handle shell part at the installation position of the control PCB is made of transparent or semitransparent materials.

7. The motorized vacuum chuck handrail of claim 6, wherein the suction unit further comprises:

the air pressure sensor is in signal connection with the control PCB and is arranged in the sealed cavity and used for monitoring the vacuum degree in the space in the sucker in real time; when the air pressure in the space in the sucker is in different preset value intervals, the color of the indicator lamp arranged on the control PCB is judged.

8. The motorized vacuum chuck armrest of claim 2, wherein the lever assembly comprises:

one end of the lever sheet is fixedly connected with the plug, and the other end of the lever sheet is provided with an inclined surface which is used for applying axial pressing thrust to tilt the plug; the lever support position is sleeved with a section of pressure spring.

9. The motorized vacuum chuck armrest according to claim 8, wherein the lever assembly further comprises:

and a deflation button arranged outside the inclined surface, wherein the inner end part of the rod-shaped element touches the inclined surface and forms pressing when the deflation button is pressed by a structure of sleeving a spring on the rod-shaped element.

10. The motorized vacuum chuck handrail of claim 9, wherein in a non-deflated state, a safe distance is provided between the inner end of the rod-like member and the sloped surface.