TWM572716U - Standing aid - Google Patents

Abstract

A standing auxiliary device includes: a base having a notch on one side, a top support side having two support structures; at least two lifting assemblies respectively connected to the support structure, and The lifting change mode of the lifting change structure is selected from one of linear lifting and arc lifting; a pad assembly connecting the lifting components; at least one driving component being disposed on the base, the driving component is connected The lifting assembly is configured to control the actuation of the lifting and changing structure; and a controller electrically connected to the driving component and configured to control the actuation of the driving component; thereby, the creative system can be installed in the toilet It can adjust the height of lifting and lowering according to the height and physical condition of different users. At the same time, it can help the people who are inconvenient or physically weak to get up quickly.

Description

Standing aid

This creation is related to an auxiliary device, in particular to a standing assist device.

According to the toilet, the toilet has been deeply planted in the general household sanitary ware. Compared with the traditional squat toilet, it can avoid the blood circulation of the legs is not smooth due to prolonged kneeling posture, which makes it difficult to stand up and easy. Loss of balance, especially in the knee, lesions, the elderly, and people with reduced mobility (such as large size, pregnant women, or physical discomfort), are less convenient to use the traditional squat toilet.

However, as the age of the person reaches the old age, the various functions of the body will gradually decline. The bones, muscles, and osteoporosis are the main causes of the decrease of bone support and the decline of muscle traction. Therefore, when It is not easy for the user to stand upright after the toilet is over, especially if the knee has lesions, the elderly, and the people with limited mobility; it is inconvenient to stand up after the toilet is over, and may even cause the user to slip, fall or self. An accident occurred when the toilet fell.

Therefore, some public places or homes are convenient for people with mobility problems to get up. They will set up handrails on the wall next to the toilet seat. However, it is not only costly but also takes up space. It is important that the hand has lesions or Forceless people cannot apply.

Furthermore, in the case of insufficient muscle strength of the lower limbs of the user, the upper limbs are often forced to support the body trunk, which is a great load on the user's physical strength and upper limb muscles, and is easily injured by improper force application. Or fall.

In addition, a manufacturer has developed a support structure that is easy to get up. As shown in FIG. 1, it is mainly provided with an ejection power device 2 (for example, a hydraulic cylinder for jacking) on both sides of the toilet body 1, wherein the top is The power supply device is coupled to the rear edge of the bottom side of the toilet seat cushion 3, and the front end of the toilet seat cushion is pivotally connected to the toilet body, and the rear end of the rear toilet seat cushion can separate the toilet body 1; when the user is in the toilet, the The ejector power unit 2 lifts the toilet seat cushion 3 to support the toilet.

However, the above-mentioned support structure that is easy to get up has the following disadvantages:

Firstly, the structure and the auxiliary use are not ideal. When the toilet is in the up movement, due to the limitation of the pivotal connection point of the toilet seat 3, the curvature of the lift toilet seat 3 is limited, so the top is caused. The degree of elevation is low, so the toilet holder still needs to pass the strength of the foot and match the support armrest to support the body. This has a certain degree of load on the physical strength of the toilet and the muscles of the upper limbs, and When one of the toilet feet or hands is weak, it is easy to be injured or fall due to improper force.

Secondly, because the height of the body of the toilet is different, therefore, because the curvature of the toilet seat cushion 3 is limited, it can be known that the height of the ceiling is low, so it is impossible to provide the toilets of different heights. Different starting points of force exerted inconvenience in use, and may even cause the above-mentioned problems caused by improper application of force or fall.

Therefore, after observing the above-mentioned deficiencies, the creator of the case believes that there is still a need for further improvement of the conventional toilet and the support structure that is easy to get up, and there is no such creation.

The main purpose of this creation is to provide a standing auxiliary device that is mounted on the toilet seat and can adjust the height of the lifting and lowering according to the height and physical condition of different users. At the same time, it can help people with reduced mobility or limb weakness. The toilet can easily get up.

In order to achieve the above object, the stand-up auxiliary device provided by the present invention comprises: a base having a notch on one side, and a top support side having two support structures adjacent to the support structure The two sides of the notch, and the supporting structures correspond to each other; at least two lifting assemblies respectively have a first connecting end, a second connecting end and a lifting and changing structure, and the first connecting end is connected to the supporting structure And the lifting and lowering mode of the lifting and changing structure is selected from one of a linear lifting and an arc lifting; a pad assembly having a body and two armrests, the center of the body being provided with a through hole, and the body The system group is provided with two handrails, the handrails are corresponding to each other, and the system is connected to the second connecting ends of the lifting components; at least one driving component is disposed on the base, and the driving component is connected to the lifting And a controller for electrically controlling the operation of the lifting and changing structure; and a controller electrically connected to the driving component and configured to control the actuation of the driving component.

Preferably, the supporting structures have at least two supporting rods, wherein one supporting rod is erected on the top side of the base, and the other supporting rod is inclined, and the two ends of the supporting rod are connected to the base And a support rod disposed in an upright position, and the support rod and the base form a triangular support structure.

Preferably, the method further comprises at least four adjustable support members respectively connected to the base, the adjustable support members supporting the base and spacing the base from the ground, and the adjustable support Each of the members has a connecting portion, a rod member and a base, the connecting portion is fixed to the base, and the rod member is connected to the connecting portion in an adjustable manner, and the bottom end of the rod member is connected to the connecting portion Pedestal.

Preferably, the second connecting end of the lifting assembly has a fixing member, the fixing member has a plurality of connecting portions and a connecting portion, and the connecting portions of the fixing members are slidably fixed to the inclined portion The set of connecting rods is recessed with a groove, and the two corresponding side walls of the groove are symmetrically pierced with a plurality of perforations.

Preferably, the lifting and lowering structure has a plurality of bearings, a plurality of gears, a plurality of guide wheels and a tooth condition, wherein the tooth condition is a curved arc setting, and the tooth condition has a central angle angle, and the bearing system is further The gears and the guide wheels are respectively connected to the bearings, and a sliding space is formed between each gear and each of the guide wheels, and the tooth condition is a hobbing displacement. The ground group is disposed in the sliding space, and the gears and the guide wheels are respectively connected.

Preferably, the gear trains engage one side of the tooth condition, and the other side of the tooth condition is recessed with at least one guide groove, and the guide wheel is provided with at least one convex corresponding to the guide groove The convex portion is disposed in the guiding groove, and one end of the tooth condition is provided with a stopping portion, and the other end is a second connecting end.

Preferably, the driving components are respectively disposed on one side of the set of connecting portions and connected to at least one gear.

Preferably, the angle of the central angle is between 30 and 90 degrees.

Preferably, wherein the angle of the central angle is between 50 and 70 degrees.

Preferably, the lifting and lowering structure of the lifting component is a screw lifting device, and the screw lifting device is electrically connected to the driving component.

The stand-up auxiliary device provided by the present invention has an open accommodating space formed between the notch of the base, the supporting structure, the lifting component and the cushion component, and the open accommodating space is used Having at least one toilet seat, and the through hole is corresponding to the toilet; in use, the creation utilizes the arc lifting structure of the lifting assembly, and a specific central angle angle of the tooth conditions for the tooth condition to have By pre-determining the arc length, you can easily raise your body to an appropriate height (such as the height of the standing), so the user does not need to support the weight of the body with the strength of the feet and knees; thus, even the feet or An elderly person with a weak knee or a person with a disability who can't work on the foot can get up quickly by this creation, which not only effectively improves the convenience of the user's toilet, but also avoids accidents such as falls, and solves the prior art. It is impossible to provide toilets of different heights to adjust different lifting points, which may cause inconvenience in use and may even cause injury or fall due to improper application of the above mentioned factors. question.

Referring to FIG. 2 and FIG. 3, together with FIG. 4, FIG. 5 and FIG. 6, a perspective view, a side view, an exploded perspective view, a partially exploded perspective view and a partial cross-sectional view of the first embodiment of the present invention are disclosed. A standing assist device 100, the stand-up assist device 100 includes:

A base 10 has a notch 11 on one side, and the top side of the base 10 has two support structures 12, and the support structures 12 are adjacent to the two sides of the notch 11, and the support structures 12 correspond to each other. In this embodiment, as shown in FIG. 3 and FIG. 4, the support structures 12 have two support bars 121, wherein one support bar 121 is erected on the top side of the base 10, and the other support bar 121 is attached. The support rods 121 are connected to the base 10 and the upright support rods 121, and the support rods 121 and the base 10 form a triangular support structure 12.

The second lifting assembly 20 has a first connecting end 21, a second connecting end 22 and a lifting and changing structure 23, the first connecting end 21 is connected to the supporting structure 12, and the lifting and changing structure 23 is further The lifting and lowering mode is a circular arc lifting; as shown in FIG. 5 , the second connecting end 22 of the lifting assembly 20 has a fixing member 24 , and the fixing member 24 has a plurality of connecting portions 241 and a connecting portion 242 . The connecting portion 242 of the fixing member 24 is slidably fixed to the support rod 121 disposed obliquely. Further, the connecting portion 241 is recessed with a recess 243, and the two corresponding recesses 243 are corresponding thereto. The sidewalls are respectively symmetrically pierced with a plurality of perforations 244; as shown in FIG. 5 and FIG. 6, the elevating and varying structure 23 has a plurality of bearings 231, a plurality of gears 232, a plurality of guide wheels 233, and a tooth condition 234. The arcing is set, and the tooth condition 234 has a central angle ɵ, which is shown in FIG.

In addition, the bearings 231 are disposed on the through holes 244, and the gears 232 and the guide wheels 233 are respectively connected to the bearings 231, and a gear is formed between each of the gears 232 and each of the guide wheels 233. Sliding space B, and the tooth condition 234 is disposed in the sliding space B in a hobbing displacement, and is respectively connected to the gear 232 and the guide wheel 233; the gear 232 is engaged with the tooth condition 234 having a plurality of One side of the toothed portion 2341, and the other side of the tooth condition 234 is recessed with at least one guiding groove 2342, and the guiding wheel 233 is provided with at least one convex portion 2331 corresponding to the guiding groove 2342. The portion 2331 is disposed in the guiding groove 2342. Further, one end of the tooth condition 234 is provided with a stopping portion 2343, and the other end is the second connecting end 22.

a pad assembly 30 having a body 31 and two armrests 32. The body 31 is provided with a through hole 311 in the center, and the body 31 is provided with two armrests 32. The armrests 32 correspond to each other. The body 31 is connected to the second connecting end 22 of the lifting assembly 20; in the embodiment, the body 31 is in the form of a seat cushion of the toilet 200.

The driving assembly 40 is connected to the lifting assembly 20 and is used to control the movement of the lifting and lowering structure 23; in this embodiment, the driving assembly 40 is The turbine worm motor module 41 is disposed on one side of the assembly portion 241 and connected to the gear 232 as shown in FIGS. 4, 5, and 6.

A controller 50 is electrically connected to the driving component 40 and used to control the actuation of the driving component 40. In this embodiment, the controller 50 is assembled to one of the armrests 32, and the controller 50 is It is used to control the actuation of the driving components 40, thereby controlling the lifting and lowering of the lifting assemblies 20 in conjunction with each other.

The four adjustable support members 60 are respectively connected to the base 10, and the adjustable support members 60 support the base 10, and the base 10 is spaced apart from the ground. Moreover, the adjustable support members 60 are respectively respectively The connecting portion 242 is fixed to the base 10, and the rod 62 is connected to the connecting portion 242 in an adjustable manner, and the rod 62 is The bottom end is connected to the base 63; in the embodiment, the rod 62 is screwed or multi-segmented to connect the base 63. In other words, the rods 62 are configured to allow the base 10 to be spaced from the ground. Adjustable structure settings.

Referring to FIG. 2 and FIG. 3, an open accommodating space A is formed between the notch 11 of the base 10, the support structure 12, the lifting assembly 20 and the seat cushion assembly 30, and The open accommodating space A is for accommodating a toilet 200, and the through hole 311 corresponds to the toilet 200.

It should be further noted that, as shown in FIG. 7 , the angle of the central angle is between 30 and 90 degrees. In the embodiment, the angle of the central angle is between 50 and 70 degrees. In this case, the tooth condition 234 is curved in the shape of the teeth. Therefore, it can be known that when the gear 232 is actively rotated, the rotary motion can be changed into a linear motion of bending, and importantly, according to the angle ɵ of the central angle angle, Correspondingly, the racks of different lengths are generated; and the present embodiment can stably hold the gear 232 when the gear 232 touches the stop portion 2343 by the central angle angle between 50 and 70 degrees. Will use the posture from the sitting position to the standing position, at the same time, the user's knees and hands do not need to bear a large body weight, and ergonomically stand on the body support balance; these tooth conditions 234 are curved and more The transmission is stable, the service life is long, and the operation is labor-saving.

In addition, as shown in FIG. 8 and FIG. 9 , since the connecting portion 242 of the fixing members 24 is slidably fixed to the support rod 121 disposed obliquely, the sliding fixing manner can be fixed by the sliding slot. The plug is inserted and fixed, etc.; therefore, the assembler can set the energy body according to the height of the user, the age of the body, and the actual state of the body, and the limit of the specific central angle of the teeth 234. The user reduces the burden on the knee and can easily and smoothly complete the movement from sitting to standing.

In order to further understand the characteristics of this creation, the use of technical means and the expected results, we will describe the use of this creation, and believe that we can have a deeper and more specific understanding of this creation, as follows:

Please refer to FIG. 4 , FIG. 5 and FIG. 6 , together with FIG. 10 and FIG. 11 , which are exploded perspective views, partial exploded perspective views, partial cross-sectional views and schematic diagrams of the use state of the first embodiment of the present invention; The user can sit on the seat cushion assembly 30 and perform the action of the toilet. When the toilet is finished, the user can control the movement of the drive assembly 40 by operating the controller 50. The rotation of the gears 232 is interlocked, and the tooth conditions 234 are moved in the sliding space B. At the same time, the tooth conditions 234 can be pushed against the seat cushion assembly 30, and the seat assembly is pushed against the user. The buttocks cause the user's body to rise to an appropriate height and assume a standing state; more specifically, the present creation utilizes the arc lifting structure of the lifting assembly 20, and the particular central angle angle of the tooth conditions 234. In order for the tooth condition 234 to have a predetermined arc length, the body can be easily raised to an appropriate height (for example, a height that is convenient for standing), so that the user does not need to support the weight of the body with the strength of the foot and the knee.

In this way, even elderly people with weak feet or knees or those who cannot work on their feet can get up quickly by this creation, which not only improves the convenience of users' toilets, but also avoids accidents such as falls. Occurs, at the same time, it solves the problem that the toilets who can not provide different heights in the prior art adjust different lifting points, which causes inconvenience in use, and may even cause the above-mentioned problems caused by improper application of the force or fall.

Please refer to FIG. 12 and FIG. 13 again, which are schematic views of a side view and a state of use of the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the lifting and lowering of the lifting assembly 20 is changed. The structure 23 is a screw lifting device 25, and the screw lifting device 25 is electrically connected to the driving assembly 40. Further, the screw lifting device 25 is connected to the seat cushion assembly 30 by at least one one-way adjustable pivoting member 26. And the angle of the pivoting of the cushion assembly 30 is only between 10 and 45 degrees. In addition, in this embodiment, the cushion assembly 30 is controlled by the linear lifting of the screw screw of the screw lifting device 25. With the lifting and lowering, it can be known that the structural characteristics of the screw spiral lifting have a better supporting strength. Therefore, the embodiment can withstand a user who is heavier; thereby, the embodiment can also achieve the same. The implementation efficacy and technical efficacy of the first embodiment.

It is worth mentioning that, since the convex portion 2331 of the guide wheel 233 is received in the guide groove 2342, when the tooth condition 234 is driven by the gear 232, the convex portion 2331 of the guide wheel 233 is The movement of the tooth condition 234 can be stabilized by the guide groove 2342; at the same time, the gear condition 234 is engaged with the gear 232 so that the tooth condition 234 is sandwiched between the guide wheel 233 and the gear 232. Therefore, the tooth condition 234 can be stably and stably moved in the sliding space B, and the use safety of the present creation is improved.

It is worth mentioning that the stop portion 2343 of the tooth condition 234 can be used to prevent the tooth condition 234 from coming off the assembly portion 241 of the fixing member 24, thereby improving the safety in use.

It is worth mentioning that, since the notch 11 of the base 10, the supporting structures 12, the lifting assembly 20 and the seat cushion assembly 30 form an open receiving space A, the present creation and group When it is equipped with the toilet 200, the creation system can be installed on the existing toilet 200 on the market, so that the user does not need to pay a high cost to order the special toilet 200, and the cost can be greatly reduced.

It is worth mentioning that the turbine worm motor module 41 is provided with at least one sensor for sensing the movement of the human body (not shown). When the tooth condition 234 rises to a predetermined position when in use, the An inductor (not shown) detects and stops the turbine worm motor module 41. Further, since the turbine worm motor module 41 has a worm gear worm self-locking structure, the tooth conditions are The controller 234 does not slide down; in addition, when the user gets up and leaves, the sensor (not shown) senses to send a signal to the controller 50, and the controller 50 controls the turbine worm motor module 41. Reverse and let the gears move down to the home position.

Hereby, the characteristics of this creation and its achievable expected effects are stated as follows:

The stand-up auxiliary device 100 of the present invention is mainly composed of the combination of the bearing 231, the gears 232, the guide wheels 233 and the teeth 234, and the teeth are matched with the teeth. The condition 234 is characterized by a curved arc setting and a specific angular angle ɵ of the center of the tooth condition 234. At the same time, the lifting and lowering structure 23 is fixed by the assembling portion 241 of the fixing members 24, and the supporting structure The 12-shaped triangular support structure 12 can provide different height and physical condition adjustment heights of the user, and at the same time, it can help the disabled or the physically weak toilet can easily stand up.

This creative department has the following implementation effects and technical effects:

Firstly, the creation is installed in the toilet seat 200, and can adjust the height of the lifting and lowering according to the height and physical condition of different users. At the same time, it can help the disabled or the physically weak toilet users to get up easily.

Secondly, the creation can easily lift the body to an appropriate height (such as the height of the standing) by using the circular lifting structure of the lifting assembly 20, so that the user does not need to support the strength of the foot and the knee at all. The weight of the body, so that even elderly people with weak feet or knees or those with disabilities unable to contribute to the foot can get up smoothly by this creation, which not only effectively enhances the convenience of the user's toilet, but also Avoid accidents such as falls.

Thirdly, the creation has a compact structure, can effectively reduce the production cost of the manufacturer, and can be installed on the existing toilet 200 on the market, so the user does not need to spend a high cost to order a special toilet 200, and can greatly Reduce the cost of expenses.

Fourthly, this creative department can solve the problem that the toilets who can not provide different heights in the prior art adjust different lifting points, which causes inconvenience in use, and may even cause injury or fall due to improper application of the above mentioned factors. problem.

In summary, this creation has its excellent progress and practicality in similar products. At the same time, it has investigated the technical information about such structures at home and abroad. The same structure has not been found in the literature. This creation has already possessed new types of patent requirements, and applied for it according to law.

However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and the equivalent structural changes that are applied to the present specification and the scope of the patent application are intended to be included in the scope of the present patent.

[知知]

1‧‧‧ toilet body

2‧‧‧Out of the power unit

3‧‧‧ toilet seat cushion

[This creation]

100‧‧‧Standing auxiliary device

10‧‧‧Base

11‧‧‧ gap

12‧‧‧Support structure

121‧‧‧Support rod

20‧‧‧ Lifting components

21‧‧‧First connection

22‧‧‧second connection

23‧‧‧ Lifting and changing structure

231‧‧‧ bearing

232‧‧‧ gears

233‧‧‧guide wheel

2331‧‧‧ convex

234‧‧‧ teeth condition

2341‧‧‧Toothed part

2342‧‧‧ Guide slot

2343‧‧‧stop

24‧‧‧Fixed parts

241‧‧‧Team

242‧‧‧Connecting Department

243‧‧‧ Groove

244‧‧‧Perforation

25‧‧‧ screw lifting device

26‧‧‧One-way adjustable pivoting parts

30‧‧‧Cushion components

31‧‧‧Ontology

311‧‧‧through hole

32‧‧‧Handrails

40‧‧‧Drive components

41‧‧‧Torque vortex motor module

50‧‧‧ Controller

60‧‧‧Adjustable support

61‧‧‧Connecting Department

62‧‧‧ rods

63‧‧‧Base

200‧‧‧ toilet

ɵ‧‧‧Center angle

A‧‧‧ accommodating space

B‧‧‧Sliding space

Fig. 1 is a schematic view showing the state of use of a support structure which is easy to get up. Figure 2 is a perspective view of the first embodiment of the present creation. Figure 3 is a side elevational view of the first embodiment of the present invention. 4 is an exploded perspective view showing the base and the lifting assembly in the first embodiment of the present invention. Figure 5 is a partially exploded perspective view showing the lifting assembly in the first embodiment of the present invention. Figure 6 is a partial cross-sectional view showing the lifting assembly in the first embodiment of the present invention. Fig. 7 is a schematic view showing the condition of the tooth in the first embodiment of the present creation. Figure 8 is a schematic view showing the use of the lifting assembly in the first embodiment of the present invention. Figure 9 is a schematic view showing the use of the lifting assembly in the first embodiment of the present invention. Fig. 10 is a schematic view showing the state of use of the user in the first embodiment of the present invention. Figure 11 is a schematic view showing the state of use of the user in the first embodiment of the present invention. Figure 12 is a side elevational view of a second embodiment of the present invention. Figure 13 is a schematic view showing the state of use of the second embodiment of the present creation.

Claims (10)

A standing auxiliary device includes: a base having a notch on one side, the top side of the base having two support structures, the support structures are adjacent to the two sides of the notch, and the same The supporting structures correspond to each other; at least two lifting assemblies respectively have a first connecting end, a second connecting end and a lifting and changing structure, the first connecting end is connected to the supporting structure, and the lifting and changing structure is raised and lowered The change mode is selected from one of a linear lift and an arc lift; a pad assembly having a body and two armrests, a through hole in the center of the body, and the system group is provided with two armrests, and the like The armrests are corresponding to each other, and the system is connected to the second connecting ends of the lifting components; at least one driving component is disposed on the base, and the driving component is connected to the lifting components and is used for controlling the lifting and lowering changes Actuating the structure; and a controller electrically connecting the driving component and controlling the actuation of the driving component; wherein the notch of the base, the supporting structures, the liters Line is formed between the assembly and the seat assembly has a open the accommodating space, and the open system accommodating space for accommodating at least one toilet, and the through holes should be based on the toilet. The standing assist device according to claim 1, wherein the support structures have at least two support rods, wherein one support rod is erected on the top side of the base, and the other support rod is inclined And the two ends of the support rod are connected to the base and the support rods disposed in an upright position, and the support rods form a triangular support structure with the base. The standing assist device according to claim 1, further comprising at least four adjustable support members respectively connected to the base, the adjustable support members supporting the base and the base and the base The ground is separated by a spacing, and the adjustable supporting members respectively have a connecting portion, a rod and a base, the connecting portion is fixed to the base, and the rod is connected in an adjustable manner And the bottom end of the rod is connected to the base. The stand-up auxiliary device according to claim 2, wherein the second connecting end of the lifting assembly has a fixing member, the fixing member has a set of connecting portions and a connecting portion, the fixing members The connecting portion is slidably fixed to the support rod which is disposed obliquely. Further, the connecting portion is recessed with a recess, and the two corresponding side walls of the recess are respectively symmetrically pierced with a plurality of through holes. The standing auxiliary device according to claim 4, wherein the lifting and lowering structure has a plurality of bearings, a plurality of gears, a plurality of guide wheels and a tooth condition, wherein the tooth condition is a curved arc setting, and the tooth condition Having a central angular angle, the bearings are assembled in the perforations, the gears and the guide wheels are respectively connected to the bearings, and a sliding is formed between each of the gears and each of the guide wheels Space, and the tooth condition is set in the sliding space in a hobbing displacement, and the gears and the guide wheels are respectively connected. The standing assist device according to claim 5, wherein the gear train engages one side of the tooth condition, and the other side of the tooth condition is recessed with at least one guide groove, and the guide wheel At least one convex portion is disposed around the guiding groove, and the convex portion is disposed in the guiding groove. Further, one end of the tooth condition is provided with a stopping portion, and the other end is a second connecting end. The standing auxiliary device according to claim 4, wherein the driving components are respectively disposed on one side of the set of connecting portions and connected to at least one gear. The standing assist device according to claim 5, wherein the angle of the central angle is between 30 and 90 degrees. The standing assist device according to claim 8, wherein the central angle of the angle is between 50 and 70 degrees. The stand-up auxiliary device according to claim 1, wherein the lifting and lowering structure of the lifting assembly is a screw lifting device, and the screw lifting device is electrically connected to the driving assembly.