CN212295404U

CN212295404U - Automatic armrest

Info

Publication number: CN212295404U
Application number: CN202021010158.4U
Authority: CN
Inventors: 林泓鑫
Original assignee: Zhejiang Huale Technology Co ltd
Current assignee: Zhejiang Huale Technology Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-01-05
Anticipated expiration: 2030-06-04

Abstract

The utility model provides an automatic handrail belongs to daily life articles for use technical field. It has solved the problem that current handrail adsorbs the back and drops easily. This automatic handrail, including being the shell of handle form, the both ends of shell all have the connector, two connector department all is provided with sucking disc and sucking disc part and stretches out the connector, automatic handrail still include driving motor and trigger piece, driving motor connects in the shell and through drive mechanism with the sucking disc is connected, driving motor can be triggered the back drive at trigger piece the sucking disc to remove in the connector, and make the terminal surface at shell both ends sticiss respectively on the sucking disc that corresponds. This automatic handrail has the good advantage of adsorption stability.

Description

Automatic armrest

Technical Field

The utility model belongs to the technical field of daily life articles for use, a automatic handrail is related to, especially, relate to a portable automatic handrail that can fix automatically.

Background

At present, various handrails on the market are firmly fixed on a wall or a floor or other places capable of being fixed through screw fixation and other modes, when the fixed handrails are fixed, the wall surface is often damaged, the fixed handrails are not suitable to move, and the fixed handrails are inconvenient to disassemble and assemble.

Therefore, people design a portable handrail and apply for Chinese patent (application number: 201920670661.3; publication number: CN209904601U), the portable handrail comprises an outer shell, the middle part of the outer shell is a handheld part, two ends of the outer shell are provided with circular expansion parts, the upper ends of the circular expansion parts are provided with turnover buttons, the bottom ends of the circular expansion parts are provided with suckers, springs are arranged in the circular expansion parts, the turnover buttons penetrate through the springs to be connected with the suckers through connecting rods, one sides of the springs are fixed at the suction disc ends of the connecting rods, the other sides of the springs are clamped on the top wall of the expansion parts of the shell, and when the turnover buttons are turned over, the connecting rods are pulled to compress the springs, so that the negative pressure. When the portable handrail is used, the suction disc is pressed against the handrail towards the wall surface, so that the suction disc is pressed to reduce air in the suction disc, the two turning buttons at the upper end are turned over respectively, the suction disc is pulled out towards the direction far away from the wall body, the cavity between the suction disc and the wall body is enlarged, the pressure difference between the two sides of the suction disc is increased, and the handrail is firmly fixed on the wall body under the air pressure.

However, when the portable armrest is used, a user needs to press the shell on the wall with one hand, the armrest is prevented from sliding or falling off in the operation process, the other hand is used for sequentially turning over the two turning buttons at the upper end to enable the sucker to firmly suck the wall, and in the process of turning over one of the turning buttons, the shell is easily inclined due to uneven stress at two ends of the shell, so that the moving direction of the sucker is inclined, if the sucker is pulled out for a long time, the situation that the distance of one side of the sucker is greater than that of the other side can occur, so that the suction force of the sucker is weakened due to air leakage between the sucker and the wall, and meanwhile, the mode that the sucker is adsorbed on the wall is only depended on, and the situation that the sucker is easy to fall off due to the adsorption force after long.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, provide an automatic handrail, solved the problem that current handrail adsorbs the back and drops easily.

The purpose of the utility model can be realized by the following technical proposal:

automatic handrail, including being the shell of handle form, the both ends of shell all have the connector, two connector department all is provided with sucking disc and sucking disc part and stretches out the connector, its characterized in that, automatic handrail still include driving motor and trigger piece, driving motor connects in the shell and through drive mechanism with the sucking disc is connected, driving motor can be triggered the back drive at trigger piece the sucking disc to remove in the connector, and make the terminal surface at shell both ends sticiss respectively on the sucking disc that corresponds.

When the automatic handrail is used, a user holds the middle part of the shell with one hand, two connectors which are positioned on the same side of the shell are pressed down towards the wall surface, the part of the sucker extending out of the connectors is flattened, air between the sucker and the wall surface is extruded, and the air pressure on the inner side is reduced. The trigger piece triggers to enable the driving motor to work, and the driving motor drives the sucker and the shell to move oppositely through the transmission of the transmission mechanism. Because of the sucking disc has adsorbed on the wall, can't remove by a wide margin, so, driving motor's work can make the sucking disc remove to the shell direction by a small margin, increases the space between sucking disc and the wall, further reduces atmospheric pressure for the inside and outside pressure differential increase of sucking disc, the sucking disc adsorbs more firmly. Simultaneously, the shell moves to the sucking disc direction under driving motor's drive to the terminal surface that makes the shell be located connection department tightly presses the sucking disc on the wall, makes the sucking disc border combine inseparabler with the wall, can not leak gas, even if use for a long time also be difficult for droing.

In the use of this automatic handrail, only need trigger on the trigger shell can be by the action of driving motor automatic drive sucking disc, need not user's manual effort of applying, at absorbent in-process, whole shell removes stably, is difficult for taking place the uneven condition with the slope of atress, can effectively avoid manual operation and lead to the condition of sucking disc unilateral gas leakage. Meanwhile, the sealing performance between the sucker and the wall surface can be better guaranteed by pressing the sucker through the end face of the shell, air leakage is avoided, and therefore the sucker can still keep enough adsorption force after being used for a long time and is not easy to fall off.

In the above automatic armrest, the suction cup is connected to an air pressure sensor capable of detecting air pressure on a side of the suction cup away from the housing, and the driving motor is capable of driving the suction cup to move into the housing when the air pressure value detected by the air pressure sensor is higher than a set value. In order to deal with the situation that the air leakage of the sucker is caused by the unevenness of the wall surface or other factors, the automatic handrail is additionally provided with the air pressure sensor to detect the air pressure between the sucker and the wall surface, when the air pressure rises due to the air leakage, the driving motor can automatically work to further pull the small-amplitude deformation of the sucker so as to increase the space between the sucker and the wall surface, reduce the air pressure and ensure that the automatic handrail can be stably fixed on the wall surface and cannot fall off. The specific set value of the air pressure can be obtained according to practical experiments, for example, the set value of the air pressure can be one of 0 to 50kPa, such as 20 kPa.

In the above automatic armrest, the suction cup includes a disc-shaped main body and a rod portion in a shape of a long rod, the rod portion is fixed to the main body along an axial direction of the main body, the air pressure sensor is fixed between the rod portion and the main body, and a through hole is formed in the main body in a position corresponding to the position of the air pressure sensor. The air pressure sensor is arranged between the rod part and the main body, the air pressure on one side of the sucker is detected through the through hole, the influence of the external air pressure can be avoided, the detection result is more accurate, the automatic work of the driving motor is matched, the fixation of the automatic handrail can be better realized, and the stability and the reliability are good.

In the automatic handrail, the transmission mechanism comprises a first screw rod, a first nut, a second nut, a first connecting rod and a second connecting rod, the first screw rod is rotatably connected in the shell, the driving motor can drive the first screw rod to rotate in the circumferential direction, the thread directions of the outer sides of the two ends of the first screw rod are opposite, the first nut and the second nut are respectively in threaded connection with the outer sides of the two ends of the first screw rod, one end of the first connecting rod is hinged to the first nut, the other end of the first connecting rod is hinged to the sucker, one end of the second connecting rod is hinged to the second nut, and the other end of the second connecting rod is. The screw thread that outside opposite direction was come to drive nut one and nut two and move or the antiport in opposite directions through screw rod one both ends, and when both moved in opposite directions, can promote the sucking disc through connecting rod one and connecting rod two and remove to the shell, through the simultaneous action of connecting rod one and connecting rod two during the removal because of the sucking disc for the sucking disc atress is even, and the removal is stable, can avoid because of the condition of removing the slope and unilateral gas leakage, has guaranteed the stability that the sucking disc adsorbs the wall.

In the above automatic armrest, a travel switch is further fixed at the transmission mechanism in the housing. The limit position of the transmission mechanism is limited through the travel switch, and the drive motor is prevented from working excessively.

As another aspect, in the above automatic armrest, the transmission mechanism includes a second screw rod rotatably connected in the housing and a third nut threadedly connected to an outer side of the second screw rod, a direction in which the second screw rod is disposed coincides with a moving direction of the suction cup, the driving motor can drive the second screw rod to rotate circumferentially, and the third nut is fixed to the suction cup. When the driving motor works, the screw rod rotates in the circumferential direction, and the nut III is fixed with the sucker, so that the nut III cannot rotate in the circumferential direction and moves along the axial direction of the screw rod II, the sucker is driven to move along the axial direction of the screw rod II, and the screw rod II serves as a guide to enable the sucker to move more stably.

In the above-described automatic armrest, the trigger includes a button attached to the housing. The work of the automatic armrest can be started and controlled by manually pressing a button on the shell by a user, and the use is convenient.

As another aspect, in the above-described automatic armrest, the trigger includes a position sensor fixed to the housing. The position sensor can be used for detecting whether the hand of a user is shielded or not, can also be used for detecting the condition of being close to a wall surface, and can control the starting of the driving motor.

In the automatic armrest, a boosting spring is further arranged in the shell, one end of the boosting spring abuts against the shell, the other end of the boosting spring acts on the sucker, and the sucker has a tendency of moving towards the inside of the shell under the elastic force action of the boosting spring. The boosting spring is arranged to provide boosting force for the action that the sucking disc adsorbs the wall surface, so that the load of the driving motor is reduced, and the working performance of the driving motor is more stable.

In the above automatic handrail, a power supply unit capable of supplying power to the driving motor is further connected to the housing. The electric energy is a relatively convenient energy source and can provide a stable energy source for the work of the driving motor.

In the above automatic armrest, the housing is further connected with a status indicator lamp. The condition of automatic handrail can be known in time through the status indicator lamp, use under the unstable condition of handrail connection is avoided, the security improves.

In the above automatic armrest, the connection port and the suction cup are both circular, and the diameter of the suction cup is larger than that of the connection port. Both are circular and the diameter of sucking disc is greater than the diameter of connector for when the shell pressed the sucking disc on the wall, can realize upwards sealing of circumference, sealed effect is better.

Compared with the prior art, the automatic handrail has the following advantages:

1. the structure initiative drive sucking disc of driving motor cooperation nut screw removes for the moving direction of sucking disc is comparatively stable, whole shell slope and the sucking disc gas leakage condition that leads to can not appear, is compressed tightly on the sucking disc by the terminal surface at shell both ends simultaneously, improves the leakproofness between sucking disc and the wall, guarantees the absorbent stability of sucking disc.

2. This automatic handrail passes through the atmospheric pressure sensor to judge the absorption condition of sucking disc to the detection of the atmospheric pressure between sucking disc and the wall to can be by driving motor automatic work after atmospheric pressure rises, reduce atmospheric pressure again, thereby make automatic handrail can fix on the wall steadily.

Drawings

Fig. 1 is a schematic cross-sectional view of an automatic armrest in a default state according to an embodiment of the present invention.

Fig. 2 is a schematic sectional view of the present automatic armrest according to the embodiment in the state of being adsorbed.

Fig. 3 is a schematic sectional view of the second embodiment of the automatic armrest.

In the figure, 1, a housing; 1a, a connecting port; 2. a suction cup; 2a, a main body; 2b, a rod part; 2c, a through hole; 3. a drive motor; 4. a trigger; 5. an air pressure sensor; 6. a first screw rod; 7. a first nut; 8. a second nut; 9. a first connecting rod; 10. a second connecting rod; 11. a travel switch; 12. a second screw; 13. a third nut; 14. a boost spring; 15. a power supply unit; 16. a wall surface.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1, the automatic handrail comprises a U-shaped handle-shaped shell 1, a power supply unit 15, a driving motor 3 and a trigger 4, wherein a cavity is formed inside the shell 1, the driving motor 3 and the power supply unit 15 are both fixed in the cavity, the trigger 4 is connected to the shell 1, round connectors 1a are respectively formed on the end surfaces of the two ends of the shell 1, suction cups 2 are respectively arranged at the two connectors 1a, and the suction cups 2 partially extend out of the connectors 1 a.

The driving motor 3 is connected with the suckers 2 through a transmission mechanism connected in the shell 1, and the driving motor 3 can drive the suckers 2 to move into the connecting port 1a after the trigger piece 4 is triggered, so that the end surfaces at two ends of the shell 1 are respectively pressed on the corresponding suckers 2. In the present embodiment, the trigger 4 comprises a button; the driving motor 3 is connected with a control circuit fixed in the shell 1; the shell 1 is also connected with a status indicator lamp.

Since the specific structures at the two ends of the housing 1 are the same, the structure at one of the two ends will be described as an example.

Specifically, the suction cup 2 includes a disk-shaped main body 2a and a rod portion 2b having a long rod shape, and the diameter of the main body 2a is larger than that of the connection port 1 a. The main body 2a is concave towards the outer side, and the rod part 2b is fixed on the inner side of the main body 2a along the axial direction of the main body 2 a. The end face of one end of the rod part 2b connected with the main body 2a is provided with a concave mounting hole, an air pressure sensor 5 is fixed in the mounting hole, the air pressure sensor 5 is connected with a control circuit, and a through hole 2c penetrates through the main body 2a corresponding to the air pressure sensor 5.

Still be provided with boosting spring 14 in shell 1, this boosting spring 14 cover is established in the pole portion 2b outside, and one end supports and leans on in shell 1, and the other end acts on sucking disc 2 pole portion 2b, and sucking disc 2 has the trend of removing to shell 1 under boosting spring 14's elasticity effect.

The transmission mechanism comprises a first screw rod 6, a first nut 7, a second nut 8, a first connecting rod 9 and a second connecting rod 10, the first screw rod 6 is rotatably connected in the shell 1, the driving motor 3 can drive the first screw rod 6 to rotate circumferentially through the matching of the gear set, the thread directions of the outer sides of the two ends of the first screw rod 6 are opposite, the first nut 7 and the second nut 8 are respectively in threaded connection with the outer sides of the two ends of the first screw rod 6, one end of the first connecting rod 9 is hinged to the first nut 7, the other end of the first connecting rod is hinged to one end, far away from the main body 2a, of the rod part 2b of the sucker, one end of the second connecting rod 10 is hinged to the. In the embodiment, two opposite sides of one end of the rod part 2b far away from the main body 2a are respectively provided with a lug, and the first connecting rod 9 and the second connecting rod 10 are respectively hinged on the two lugs. A travel switch 11 is further fixed in the shell 1 at a position corresponding to the first nut 7.

When the automatic armrest is used, a user holds the middle part of the outer shell 1 with one hand, two connecting ports 1a positioned on the same side of the outer shell 1 are pressed down towards the wall surface 16, a main body 2a of the suction cup 2 partially extending out of the connecting ports 1a is flattened, air between the suction cup 2 and the wall surface 16 is squeezed out, and the air pressure on the inner side is reduced.

A user can press a button on the shell 1, the control circuit controls the driving motor 3 to work, the first screw rod 6 is driven to rotate in the circumferential direction through the gear set, the first nut 7 and the second nut 8 are driven to move in the opposite direction through threads on the outer sides of the two ends of the first screw rod 6, and the first connecting rod 9 and the second connecting rod 10 can push the sucker 2 to move in the shell 1. Because the sucking disc 2 has adsorbed on the wall 16, can't remove by a wide margin, so, the work of driving motor 3 can make sucking disc 2 remove the deformation to shell 1 direction by a small margin, increases the space between sucking disc 2 and the wall 16, further reduces atmospheric pressure for the pressure differential increase inside and outside sucking disc 2, sucking disc 2 adsorbs more firmly. Meanwhile, the shell 1 moves towards the direction of the sucker 2 under the driving of the driving motor 3, and the end face of the shell 1, which is positioned at the connecting port 1a, tightly presses the sucker 2 on the wall surface 16, so that the edge of the sucker 2 is tightly combined with the wall surface 16, air leakage is avoided, and the sucker is not easy to fall off even if the sucker is used for a long time.

After the adsorption is fixed, in order to deal with the situation that the air leakage of the sucker 2 is caused by the unevenness of the wall surface 16 or other factors, the air pressure sensor 5 is additionally arranged on the automatic handrail to detect the air pressure between the sucker 2 and the wall surface 16, when the air pressure is caused by the air leakage, the driving motor 3 can automatically work, the sucker 2 is further pulled to deform in a small amplitude to increase the space between the sucker 2 and the wall surface 16, the air pressure is reduced, and the automatic handrail can be stably fixed on the wall surface 16 and cannot fall off. In this embodiment, the specific set value of the air pressure can be obtained according to practical experiments, for example, the set value of the air pressure can be one of 0 to 50kPa, preferably 20 kPa.

Example two

The present embodiment is substantially the same as the first embodiment, except that: the transmission mechanism comprises a second screw 12 which is rotatably connected in the shell 1 and a third nut 13 which is in threaded connection with the outer side of the second screw 12, the setting direction of the second screw 12 is consistent with the moving direction of the sucker 2, the driving motor 3 can drive the second screw 12 to rotate circumferentially, and the third nut 13 is fixed with the rod part 2b of the sucker 2. When the driving motor 3 works, the second screw rod 12 is driven to rotate in the circumferential direction through the gear set, and the third nut 13 is fixed with the sucker 2, so that the third nut 13 cannot rotate in the circumferential direction, but moves along the second screw rod 12 in the axial direction, and further drives the sucker 2 to move along the second screw rod 12 in the axial direction. The trigger 4 may also include a position sensor fixed to the housing 1, which may be used to detect whether the user's hand is covered or not, and also may be used to detect the proximity to the wall surface 16, both of which may control the activation of the drive motor 3.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Automatic handrail, including being shell (1) of handle form, the both ends of shell (1) all have connector (1a), two connector (1a) department all is provided with sucking disc (2) and sucking disc (2) part stretches out connector (1a), its characterized in that, automatic handrail still includes driving motor (3) and trigger piece (4), driving motor (3) are connected just through drive mechanism in shell (1) with sucking disc (2) are connected, driving motor (3) can be triggered back drive in trigger piece (4) sucking disc (2) to remove in connector (1a), and make the terminal surface at shell (1) both ends sticiss respectively on sucking disc (2) that correspond.

2. The automatic armrest as claimed in claim 1, characterized in that an air pressure sensor (5) capable of detecting air pressure on a side of the suction cup (2) far away from the housing (1) is connected to the suction cup (2), and the driving motor (3) is capable of driving the suction cup (2) to move into the housing (1) when the air pressure value detected by the air pressure sensor (5) is higher than a set value.

3. The armrest according to claim 2, wherein the suction cup (2) comprises a disk-shaped main body (2a) and a rod portion (2b) having a long rod shape, the rod portion (2b) is fixed to the main body (2a) along an axial direction of the main body (2a), the air pressure sensor (5) is fixed between the rod portion (2b) and the main body (2a), and a through hole (2c) is formed through the main body (2a) at a position corresponding to the air pressure sensor (5).

4. The automatic handrail of claim 1, 2 or 3, wherein the transmission mechanism comprises a first screw rod (6), a first nut (7), a second nut (8), a first connecting rod (9) and a second connecting rod (10), the first screw rod (6) is rotatably connected in the housing (1), the driving motor (3) can drive the first screw rod (6) to rotate circumferentially, the outer sides of the two ends of the first screw rod (6) are opposite in thread direction, the first nut (7) and the second nut (8) are respectively in threaded connection with the outer sides of the two ends of the first screw rod (6), one end of the first connecting rod (9) is hinged to the first nut (7), the other end of the first connecting rod is hinged to the sucker (2), one end of the second connecting rod (10) is hinged to the second nut (8), and the other end of the second connecting rod is hinged to the sucker (2).

5. The automatic armrest according to claim 1, 2 or 3, characterized in that a travel switch (11) is also fixed in the housing (1) at the transmission mechanism.

6. The automatic handrail of claim 1 or 2 or 3, wherein the transmission mechanism comprises a second screw rod (12) rotatably connected in the housing (1) and a third nut (13) screwed outside the second screw rod (12), the second screw rod (12) is arranged in the same direction as the moving direction of the sucker (2), the driving motor (3) can drive the second screw rod (12) to rotate circumferentially, and the third nut (13) is fixed with the sucker (2).

7. The automatic armrest according to claim 1, 2 or 3, characterized in that the trigger (4) comprises a push button connected to the housing (1).

8. The automatic armrest according to claim 1, 2 or 3, characterized in that the trigger (4) comprises a position sensor fixed on the housing (1).

9. The automatic armrest according to claim 1, 2 or 3, characterized in that a boosting spring (14) is further arranged in the housing (1), one end of the boosting spring (14) abuts against the housing (1), the other end of the boosting spring acts on the suction cup (2), and the suction cup (2) has a tendency to move towards the inside of the housing (1) under the action of the elastic force of the boosting spring (14).

10. The automatic handrail according to claim 1 or 2 or 3, characterized in that a power supply unit (15) capable of supplying power to the drive motor (3) is further connected to the housing (1).

11. The automatic armrest according to claim 1, 2 or 3, characterized in that a status indicator light is also connected to the housing (1).

12. The automatic handrail according to claim 1 or 2 or 3, characterized in that the connection port (1a) and the suction cup (2) are both circular and the diameter of the suction cup (2) is greater than the diameter of the connection port (1 a).