CN111608473B

CN111608473B - Contact-free door handle

Info

Publication number: CN111608473B
Application number: CN202010508415.5A
Authority: CN
Inventors: 陈丽清; 陈茹; 翟林静; 王忠清
Original assignee: Peoples Hospital of Hebi
Current assignee: Peoples Hospital of Hebi
Priority date: 2020-06-06
Filing date: 2020-06-06
Publication date: 2021-08-20
Anticipated expiration: 2040-06-06
Also published as: CN111608473A

Abstract

The invention provides a contact-free door handle, which effectively solves the problems that the door handle has larger infection risk and the user is easy to have cross infection in the prior art; the technical scheme for solving the problem is that the handle comprises a handle main body, wherein the main body consists of a longitudinal shaft and a rotating rod, a rectangular box is arranged at the corner of the main body, a first cylinder is arranged on the longitudinal shaft, a first one-way clutch is arranged between the first cylinder and the longitudinal shaft, a first bevel gear is arranged at the front end of the longitudinal shaft, a second cylinder is arranged on the first cylinder, and a second one-way clutch is arranged between the first cylinder and the second cylinder; a third cylinder is arranged on the rotating rod, a fourth cylinder is arranged on the third cylinder, a second bevel gear is arranged on the fourth cylinder, a third bevel gear is arranged at the left end of the third cylinder, a fourth bevel gear is arranged at the left end of the fourth cylinder, and a transmission gear is arranged on a front side plate of the rectangular box; the right end of the fourth cylinder is provided with a large gear, the right end of the fourth cylinder is provided with a circular plate, the left end face of the circular plate is provided with a small gear, the right side of the circular plate is provided with a rotating shaft, a plastic film is arranged on the rotating shaft, and the right end of the circular plate is fixedly provided with a rotating drum.

Description

Contact-free door handle

Technical Field

The invention relates to the technical field of public health, in particular to a touch-free door handle.

Background

The door handle is an object which is contacted by people every day, so that bacteria, sweat stains, oil stains and the like can be attached to the handle, the risk of cross infection exists when people pass through the door handle, if the phenomenon occurs in a hospital, cross infection of doctors and patients can occur, and the consequences are very serious. In the prior art, the non-contact handle is roughly divided into two ways of preventing cross infection, one is to use sterilized water for sterilization, and the other is to use a plastic film for physical isolation of the contact part.

When the plastic film isolation type hand-operated; one part adopts the opening and closing extrusion of two doors to replace the plastic film, but most of the door structures do not have door locks, such as a shop door, and the door can be opened by pushing force, so that in use, a user does not need to use a handle and can push other parts to open the door, and obviously, the risk of cross infection exists; the film is replaced by a small part of sensors to control the motor, and the film replacing device also has the big problem that firstly, the film is connected with a spring pin bolt on a door lock, if the motor fails or the film is used up, the door can still be normally locked, a person has to twist a handle when passing, the film on the handle is not replaced, the person has a high probability of cross infection, and secondly, if the plastic film is damaged or rolled up in the use of the device, the person has a high probability of cross infection.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the contact-free door handle, which effectively solves the problems that the door handle has larger infection risk and the user is easy to have cross infection in the infection prevention process in the prior art.

The technical scheme for solving the problem is that the door handle comprises an L-shaped handle main body on a door, wherein the main body consists of a longitudinal axis vertical to the door and a rotating rod parallel to the door, the main body can rotate by taking the longitudinal axis as a center, a rectangular box is arranged at the corner of the main body, the longitudinal axis penetrates through the rear side plate of the rectangular box, and the rotating rod penetrates through the right side plate of the rectangular box; the rectangular box is sleeved with a first cylinder, a first one-way clutch is arranged between the first cylinder and the longitudinal shaft, a first bevel gear coaxial with the longitudinal shaft is fixed at the front end of the longitudinal shaft, a second cylinder is sleeved on the first cylinder and fixed to be not rotated, a second one-way clutch is arranged between the first cylinder and the second cylinder, and the rectangular box can rotate around the second cylinder and cannot be separated from the second cylinder; a third cylinder capable of rotating is sleeved on the rotating rod, a fourth cylinder capable of rotating is sleeved on the third cylinder, a second bevel gear meshed with the first bevel gear is fixed on the fourth cylinder, a third bevel gear coaxial with the third cylinder is fixed at the left end of the third cylinder, a fourth bevel gear is fixed at the left end of the fourth cylinder, a transmission gear capable of rotating is arranged on a front side plate of the rectangular box, and the third bevel gear and the fourth bevel gear are meshed with the transmission gear at the same time;

fourth drum right-hand member run through the rectangle box right side board and arrange the rectangle box outside in, fourth drum right-hand member is fixed with the gear wheel, third drum right-hand member stretches out the fourth drum, fourth drum right-hand member is fixed with the plectane, have the pinion with gear wheel toothing on the plectane left end face, there is the pivot parallel with the pinion one-to-one and with the bull stick on the plectane right side, the pivot can be dismantled, the winding has plastic film in the pivot, the plectane right-hand member is fixed with the rotary drum of suit on the bull stick, the pinion rotates when can driving the pivot round the revolution of gear wheel round the gear wheel, meanwhile, the rotary drum twines up the plastic film who changes in the shaft.

The handle has the advantages of ingenious structure, effective replacement of the contact point on the handle, effective prevention of cross infection, avoidance of contact with the residue on the previous position, thorough isolation of germs on the handle, realization of non-contact, suitability for various occasions and strong practicability.

Drawings

FIG. 1 is a front cross-sectional view of the present invention.

FIG. 2 is a top cross-sectional view of the present invention.

FIG. 3 is a schematic diagram of the transmission relationship of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 1.

Fig. 5 is a view from direction B of fig. 1.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the present invention includes an L-shaped handle body on a door, the body is composed of a longitudinal axis 1 perpendicular to the door and a rotating rod 2 parallel to the door, the body can rotate with the longitudinal axis 1 as a center, a rectangular box 3 is arranged at a corner of the body, wherein the longitudinal axis 1 penetrates through a rear side plate of the rectangular box 3, and the rotating rod 2 penetrates through a right side plate of the rectangular box 3; a first cylinder 4 is sleeved on the longitudinal shaft 1, a first one-way clutch 5 is installed between the first cylinder 4 and the longitudinal shaft 1, a first bevel gear coaxial with the longitudinal shaft 1 is fixed at the front end of the longitudinal shaft 1, a second cylinder 6 is sleeved on the first cylinder 4, the second cylinder 6 is fixed and does not rotate, a second one-way clutch 7 is installed between the first cylinder 4 and the second cylinder 6, and the rectangular box 3 can rotate around the second cylinder 6 and cannot be separated; a third cylinder 8 capable of rotating is sleeved on the rotating rod 2, a fourth cylinder 9 capable of rotating is sleeved on the third cylinder 8, a second bevel gear 10 meshed with the first bevel gear is fixed on the fourth cylinder 9, a third bevel gear 11 coaxial with the third cylinder 8 is fixed at the left end of the third cylinder 8, a fourth bevel gear 12 is fixed at the left end of the fourth cylinder 9, a transmission gear 13 capable of rotating is arranged on the front side plate of the rectangular box 3, and the third bevel gear 11 and the fourth bevel gear 12 are simultaneously meshed with the transmission gear 13;

the right end of the fourth cylinder 9 penetrates through the right side plate of the rectangular box 3 and is arranged on the outer side of the rectangular box 3, the right end of the fourth cylinder 9 is fixedly provided with a large gear 14, the right end of the third cylinder 8 extends out of the fourth cylinder 9, the right end of the fourth cylinder 9 is fixedly provided with a circular plate 15, the left end face of the circular plate 15 is provided with a small gear 16 meshed with the large gear 14, the right side of the circular plate 15 is provided with a rotating shaft 21 which is in one-to-one correspondence with the small gear 16 and is parallel to the rotating rod 2, the rotating shaft 21 can be detached, a plastic film is wound on the rotating shaft 21, the right end of the circular plate 15 is fixedly provided with a rotating drum 17 sleeved on the rotating rod 2, the small gear 16 rotates around the large gear 14 to drive the rotating shaft 21 to rotate around the large gear 14, and meanwhile, the rotating drum 17 winds up the plastic film on the rotating shaft 21.

In order to install the transmission gear 13, a gap is formed between the third bevel gear 11 and the fourth bevel gear 12, the transmission gear 13 is located in the gap, the central shaft of the transmission gear 13 penetrates through the side plate of the rectangular box 3, and a bearing is installed between the central shaft and the front side plate of the rectangular box 3.

In order to realize that the rectangular box 3 can rotate around the second cylinder 6 and can not be separated, the second cylinder 6 penetrates through the rear side plate of the rectangular box 3, and a bearing is arranged between the second cylinder 6 and the rear side plate of the rectangular box 3.

In order to install the second cylinder 6, the rear end of the second cylinder 6 extends out of the rectangular box 3 and is arranged outside the rectangular box 3, a base 18 is fixed at the rear end of the second cylinder 6, and the base 18 is fixed on the door through a plurality of screws.

In order to ensure that the next user does not touch the residual part of the previous user, the pinions 16 are uniformly distributed on the circumference, the rotating shafts 21 are also provided, and the pinions 16 correspond to the rotating shafts 21 one by one.

In order to mount the pinion 16 and the rotating shaft 21 and to enable the pinion 16 to drive the rotating shaft 21 to rotate, a plurality of spline cylinders 19 corresponding to the pinion 16 one by one penetrate through the circular plate 15, the spline cylinders 19 are coaxially fixed with the corresponding pinion 16, spline shafts 20 corresponding to the spline cylinders 19 one by one are arranged at the left end of the rotating shaft 21, and the spline shafts 20 are inserted in the spline cylinders 19.

In order to prevent the spline shafts 20 from separating from the spline cylinders 19 when the rotating shaft 21 is in use and prevent the rotating shaft 21 from being damaged, the right end of the rotating drum 17 is also provided with a circular plate 15, the circular plate 15 is provided with the spline cylinders 19 corresponding to the rotating shaft 21 one by one, the right end of the rotating shaft 21 is provided with the spline shafts 20 corresponding to the spline cylinders 19 one by one, the spline shafts 20 are inserted into the spline cylinders 19, and a clamp spring is arranged between the circular plate 15 on the right side and the rotating drum 17, so that the circular plate 15 is not separated from the rotating drum 17.

In order to rapidly replace the plastic films on all the rotating shafts 21, the right end of the spline shaft 20 on the right side extends out of the circular plate 15 and is arranged on the right side of the circular plate 15, the part, arranged on the right side of the circular plate 15, of the right end of the spline shaft 20 on the right side is provided with threads, nuts are screwed on the threaded parts of the spline shaft 20, the nuts enable the corresponding spline shaft 20 to be firmly fixed with the spline barrel 19, and all the rotating shafts 21 can be moved to the right by pulling the circular plate 15 on the right side.

It is worth noting that in order to reduce friction loss and prolong the service life of parts, a bearing is installed between the third cylinder 8 and the fourth cylinder 9, a bearing is installed between the fourth bearing and the right side plate of the rectangular box 3, and a bearing is installed between the spline cylinder 19 and the circular plate 15. In order to facilitate the quick replacement of the plastic film, the plastic film is wound on the paper tube, then the paper tube with the corresponding size is sleeved on the rotating shaft 21 and the rotating tube 17, and the paper tube is only required to be detached from the rotating tube 17 and replaced by a new paper tube when being replaced; the plastic film in the invention can be replaced by other antibacterial materials, such as oily paper, non-woven fabric and the like, and has better waterproof function. Certain friction force exists between the paper tube and the rotating shaft 21 and between the paper tube and the rotating tube 17, the friction force is moderate, too large friction force can cause the plastic film to be broken or the handle not to normally restore the original position, too small friction force can cause the rotating tube 17 not to smoothly pull the plastic film on the rotating shaft 21, the part contacted by the previous user can be touched by the next user, and the risk of infection exists; the right end of the rotary drum 17 is sealed, so that the door handle can be completely wrapped; the transmission gear 13 may be provided in plurality, thereby ensuring smooth transmission of the third bevel gear 11 and the fourth bevel gear 12.

Before use, a paper tube with a plastic film is sleeved on the rotating shaft 21 and the rotating drum 17 in advance, and one end of the plastic film on the rotating shaft 21 is coiled on the rotating drum 17. When the device is used, a user holds a plurality of rotating shafts 21 and presses downwards, so that the rotating rod 2 rotates around the longitudinal shaft 1, the longitudinal shaft 1 drives the first cylinder 4 to rotate together through the first one-way clutch 5, meanwhile, the second one-way clutch 7 idles, and in the process, the relative positions of the first bevel gear and the second bevel gear 10 are not changed, so that the second bevel gear 10 cannot rotate; when the handle is released, the handle rebounds, at this time, the first one-way clutch 5 idles, the second cylinder 6 makes the first bevel gear fixed and unable to rotate and rotate through the second one-way clutch 7, the second bevel gear 10 rolls along the first bevel gear in the rotation of the rotating rod 2 on the main body, the second bevel gear 10 drives the fourth cylinder 9 to rotate, the fourth cylinder 9 drives the fourth bevel gear 12 to rotate, the fourth bevel gear 12 drives the third bevel gear 11 to rotate reversely through the transmission gear 13, at this time, the third cylinder 8 and the fourth cylinder 9 rotate coaxially and reversely, the fourth cylinder 9 drives the large gear 14 at the right end to rotate, the third cylinder 8 drives the circular plate 15 at the right end to rotate reversely, the circular plate 15 drives the plurality of small gears 16 to roll along the outer edge of the large gear 14, the plastic film which is just touched by the human hand is completely coiled on the rotary drum 17 to wait for the next working cycle.

After multiple use, when the plastic film on the rotating shaft 21 is about to be used up, the plastic film is required to be replaced in time, the clamp spring is buckled by using a clamp, the right circular plate 15 is pulled rightwards to separate the right circular plate 15 from the rotating drum 17, at the moment, the right circular plate 15 simultaneously pulls out all the rotating shafts 21 rightwards through the spline shaft 20 and the nuts on the right circular plate 15, at the moment, paper tubes on the rotating shafts 21 and the rotating drum 17 can be replaced easily, then a new paper tube with the plastic film is sleeved on the rotating shaft 21, an empty paper tube is sleeved on the rotating drum 17, one end of the plastic film on each rotating shaft 21 is wound on the rotating drum 17, then the circular plate 15 is sleeved on the rotating drum 17 in situ, and finally the clamp spring is installed.

In the above replacement, since the plastic film and the rotating drum 17 have margins after replacement, when the spline shaft 20 at the left end of the rotating shaft 21 is not inserted into the corresponding spline cylinder 19, the right circular plate 15 can be rotated first, the circular plate 15 rotates to drive the rotating shafts 21 to rotate around the rotating drum 17, so that the excess plastic film is wound on the rotating drum 17, and then the spline shaft 20 at the left end of the rotating shaft 21 is inserted into the spline cylinder 19 on the left circular plate 15.

The invention has the outstanding advantages and remarkable progress that:

1. according to the invention, the previous plastic film which is contacted with the rotary drum 17 is completely coiled on the rotary drum 17 by coiling the plastic film, and due to different personal habits, the rotary shafts 21 cannot rotate by a large angle when some doors are opened, so that the rotating angle of each rotary shaft 21 is not large, and the contacted plastic film cannot be coiled in place.

2. In the invention, a plurality of rotating shafts 21 are used for surrounding the rotating drum 17, and the contact part of a user is concentrated on the outermost edge of the rotating shafts 21 when in use, so that for a single rotating shaft 21, the angle of the contact part with the hand of the user is only needed to be rotated, and the more the rotating shafts 21 are, the smaller the angle of the rotating shaft 21 which needs to be rotated each time is.

3. Based on a plurality of rotating shafts 21, because after each use, the rotating shafts 21 revolve along with the rotation of the small gear 16 around the large gear 14, the parts of the rotating shafts 21 contacted by each person in use are different, in this case, even if the plastic film is rolled or damaged, only a small part of the plastic film can be contacted by the user later, and the infection risk is greatly reduced.

4. In the invention, the plastic film is used for isolation, the rotating shafts 21 and the rotating drum 17 are kept parallel, compared with the prior art that the rotating shafts 21 release the plastic film when the plastic film is pulled hard, the rotating drum 17 collects the plastic film, the phenomenon of rolling the edge of the film is effectively avoided, the film on the outer edge part of the rotating shaft 21 contacted by a hand can be completely covered, the film can also be completely updated after each use, and the next user can not contact the residue on the previous hand.

5. When the paper tube on the rotary drum 17 and the plastic film on the rotating shaft 21 are replaced, all the rotating shafts 21 can be detached for replacement or new plastic films can be installed by detaching the circular plate 15 at the right end, and the circular plate 15 only needs to be clamped on the rotary drum 17 in situ during installation, so that the device is convenient and efficient.

6. For spraying the disinfection water disinfection, when the user uses, need not worry that the hand is moistened by the disinfection water, and it is unanimous with normal door handle use experience, can not influence mood.

7. The invention is especially suitable for being applied to places such as intensive care units, operating rooms, infectious departments and the like, and the hands of medical staff are kept clean when the door is opened under the condition of ensuring no infection, so that the infection between doctors and patients and the infection between doctors and patients are effectively prevented, and the spread of infectious diseases is effectively prevented.

8. Compared with the prior art, the device directly links the action of opening the door with the action of replacing the plastic film, the handle rebounds after opening the door to directly enable the rotary drum 17 and the rotary shaft 21 to rotate, the response is fast and accurate, when a fault occurs, namely the small gear 16, the large gear 14, the first bevel gear, the second bevel gear 10, the transmission gear, the third bevel gear 11 and the fourth bevel gear 12 are blocked at one position, at the moment, the whole door handle cannot normally rotate, at the moment, if the door is in an opening state, a person does not need to touch the handle during passing, at the moment, if the door lock is in a locking state, namely, the door is closed, for the door closed in public places, the person can go around the way under general conditions, the person can not touch the handle, and cross infection can be effectively prevented.

Claims

1. A door handle without contact is characterized by comprising an L-shaped handle main body on a door, wherein the main body consists of a longitudinal axis (1) vertical to the door and a rotating rod (2) parallel to the door, the main body can rotate by taking the longitudinal axis (1) as a center, a rectangular box (3) is arranged at a corner of the main body, the longitudinal axis (1) penetrates through the rear side plate of the rectangular box (3), and the rotating rod (2) penetrates through the right side plate of the rectangular box (3); a first cylinder (4) is sleeved on the longitudinal shaft (1), a first one-way clutch (5) is installed between the first cylinder (4) and the longitudinal shaft (1), a first bevel gear coaxial with the longitudinal shaft (1) is fixed at the front end of the longitudinal shaft (1), a second cylinder (6) is sleeved on the first cylinder (4), the second cylinder (6) is fixed and does not rotate, a second one-way clutch (7) is installed between the first cylinder (4) and the second cylinder (6), and the rectangular box (3) can rotate around the second cylinder (6) and cannot be separated; a third cylinder (8) capable of rotating is sleeved on the rotating rod (2), a fourth cylinder (9) capable of rotating is sleeved on the third cylinder (8), a second bevel gear (10) meshed with the first bevel gear is fixed on the fourth cylinder (9), a third bevel gear (11) coaxial with the third cylinder (8) is fixed at the left end of the third cylinder (8), a fourth bevel gear (12) is fixed at the left end of the fourth cylinder (9), a transmission gear (13) capable of rotating is arranged on the front side plate of the rectangular box (3), and the third bevel gear (11) and the fourth bevel gear (12) are simultaneously meshed with the transmission gear (13);

the right end of the fourth cylinder (9) penetrates through the right side plate of the rectangular box (3) and is arranged on the outer side of the rectangular box (3), a large gear (14) is fixed at the right end of the fourth cylinder (9), the right end of the third cylinder (8) extends out of the fourth cylinder (9), a circular plate (15) is fixed at the right end of the fourth cylinder (9), a small gear (16) meshed with the large gear (14) is arranged on the left end surface of the circular plate (15), rotating shafts (21) which correspond to the small gears (16) one by one and are parallel to the rotating rod (2) are arranged on the right side of the circular plate (15), the rotating shafts (21) are detachable, a plastic film is wound on the rotating shafts (21), a rotating drum (17) sleeved on the rotating rod (2) is fixed at the right end of the circular plate (15), and the small gears (16) can rotate around the large gear (14) to drive the rotating shafts (21) to revolve around the large gear (14) simultaneously, at the same time, the drum (17) winds up the plastic film on the rotating shaft (21).

2. The touch-free door handle according to claim 1, characterized in that a space is arranged between the third bevel gear (1) and the fourth bevel gear (2), the transmission gear (13) is arranged in the space, the central shaft of the transmission gear (13) penetrates through the side plate of the rectangular box (3), and a bearing is arranged between the central shaft and the front side plate of the rectangular box (3).

3. A touch-free door handle as claimed in claim 1, characterized in that the second cylinder (6) extends through the rear side of the rectangular box (3), and a bearing is mounted between the second cylinder (6) and the rear side of the rectangular box (3).

4. A touch-free door handle as claimed in claim 1, wherein the rear end of the second cylinder (6) extends out of the rectangular box (3) and is disposed outside the rectangular box (3), the rear end of the second cylinder (6) is fixed with a base (18), and the base (18) is fixed on the door by a plurality of screws.

5. A touch-free door handle as claimed in claim 1, wherein the plurality of pinions (16) are circumferentially and uniformly distributed, the plurality of shafts (21) are also provided, and the plurality of pinions (16) correspond to the plurality of shafts (21) one by one.

6. The touch-free door handle according to claim 1, wherein a plurality of spline cylinders (19) corresponding to the pinions (16) are penetrated through the circular plate (15), the spline cylinders (19) and the corresponding pinions (16) are coaxially fixed together, the left end of the rotating shaft (21) is provided with spline shafts (20) corresponding to the spline cylinders (19), and the spline shafts (20) are inserted into the spline cylinders (19).

7. The touch-free door handle according to claim 1, wherein the right end of the rotating drum (17) is also provided with a circular plate (15), the circular plate (15) is provided with spline cylinders (19) corresponding to the rotating shafts (21) one by one, the right end of the rotating shaft (21) is provided with spline shafts (20) corresponding to the spline cylinders (19) one by one, the spline shafts (20) are inserted into the spline cylinders (19), and a snap spring is arranged between the circular plate (15) on the right side and the rotating drum (17) to prevent the circular plate (15) and the rotating drum (17) from being separated.

8. A touch-free door handle according to claim 1, characterized in that the right end of the spline shaft (20) on the right side extends out of the circular plate (15) and is placed on the right side of the circular plate (15), the right end of the spline shaft (20) on the right side is threaded on the part placed on the right side of the circular plate (15), the threaded part of the spline shaft (20) is screwed with a nut, the nut makes the corresponding spline shaft (20) and the spline cylinder (19) firmly fixed together, and pulling the circular plate (15) on the right side can make all the rotating shafts (21) move to the right.