ES2612707T3 - Mobility aid - Google Patents

Abstract

Mobility aid, in particular walker (1) or wheelchair, with two side parts (2, 3), which are joined together by an articulated arrangement (6) such that the two side parts (2, 3 ) are movable in translation between an operating configuration, in which they are separated from each other, and a transport configuration, in which they are joined, for which the articulated arrangement (6) has two arms (7, 8) that they intersect at an intersection point (15), an articulated element (10) being rotatably housed around the axis of a bearing (11) being arranged on each arm, each arm (7, 8) being rotatably connected with a of the lateral parts (2, 3) and the corresponding articulated element (10) of an arm (7, 8) being rotatably connected with the other lateral part (2, 3) respectively, being provided in at least one articulated element (10) a means of assurance (13) that fixes the provision arti culated (6) in the operating configuration, characterized in that the securing means (13) is shown starting from one of the articulated elements (10) to the travel path of one of the arms (7, 8), the means being made of securing (13) as a clamping element and in an elastically foldable way, so that it exerts in contact with the arm (7, 8) a frictional force that can be overcome on it.

Description

DESCRIPTION

Mobility aid

5 The invention relates to a mobility aid, in particular a walker or a wheelchair, with two side parts, which are joined together by an articulated arrangement such that the two side parts are movable in translation between a operating configuration, in which they are separated from each other, and a transport configuration, in which they are joined, for which the articulated arrangement has two arms that intersect at an intersection point, an element being arranged on each arm articulated housed in a rotatable manner, each arm being rotatably connected with one of the side parts and the corresponding articulated element of a swivel arm being connected with the other side part, respectively.

Generic mobility aids are known from the state of the art. These are devices that should improve user mobility. Mobility aids are designed in particular for older people 15 and / or with limited motor skills. It can be a walker, a wheelchair, a baby carriage or the like.

It is customary for an aid for generic mobility to have, in addition to an operating configuration, in which a transport configuration can be used as prescribed. In the transport configuration, the mobility aid is folded, folded or something similar to have a compact measure. In an aid for generic mobility, two lateral parts are movable relative to each other. A lateral part can be a linkage, which has rolling wheels at the lower end and a groove at the upper end.

Different types of articulated arrangements are known from the prior art to join the two lateral parts together. The present invention relates to articulated arrangements in which a scissor type joint 25 is provided in a very specific manner. It has two arms that cross. The scissor joint can be articulated with the lower ends of the arms rotatably on the side parts. However, the upper ends of the arms are not directly connected with the side parts but instead are joined together with respectively an articulated element. The articulated element is rotatably connected with both the upper end of the arm in question and the lateral part in question. Of course, articulated elements can also be provided at the lower ends of the arms. In this way an articulated arrangement can be created that allows a displacement at least in the most translational part of a lateral part with respect to the other. A generic articulated arrangement is characterized, moreover, because it presents exclusively rotating joints. You can completely give up movable joints.

35

Generic mobility aids are known for example from WO 2012/089694 A1 and US 2007/0267835 A1. In the devices disclosed in these documents, the mobility aid can be passed to the operating configuration when the two lateral parts are pressed apart. A return to the transport configuration can be achieved because a seat disposed at the upper ends of the 40 arms of the articulated arrangement is pulled up in the center, whereby the articulated arrangement is actuated accordingly.

Although mobility aids in principle have given good results in practice, there is still a need for improvements. The known mobility aids only remain in the operating configuration because their articulated arrangement pushes the separate position of the two lateral parts under the proper weight. However, this only works satisfactorily while the mobility aid is used as prescribed. As soon as unusual operating states occur, for example a lateral support in one of the lateral parts, passing through curbs or irregular terrain and the like, it can happen that the two lateral parts are joined in an unintended way. In this case, there is a step of the mobility aid 50 not in accordance with the requirements of the transport configuration. In the worst case, this can lead to a fall of the person using the mobility aid.

A mobility aid according to the preamble of claim 1 is known from EP 2 366 372 A1.

55

The present invention aims to improve the handling of a mobility aid according to the invention, in particular to increase its operational safety.

To achieve this, the invention proposes a mobility aid according to claim 1.

The securing means serves to fix the articulated arrangement in the operating configuration. Setting the operating configuration refers to the fact that the articulated arrangement cannot simply be passed to the transport configuration. Setting means in particular that the displacement path of the articulated arrangement is limited at least in part. Therefore, the articulated arrangement can continue to move, if necessary, minimally. However, the necessary travel route for a step to the transport configuration is not available. The means of assurance serves in this case as an obstacle in the travel path of the articulated arrangement. Fixing can also mean that an actuation of the articulated arrangement by the securing means is prevented. In particular, a rotation of the arrangement 10 articulated around one of its axes of rotation is prevented. The articulated provision is stopped in its mobility by means of assurance. The securing means blocks the axes of rotation of the articulated arrangement.

Thanks to the means of assurance, it is achieved that a non-conforming step can be prevented according to the prescribed mobility aid to the transport configuration.

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The means of assurance is provided in an articulated element. The securing means may be arranged in the articulated element. The securing means may be impermissibly connected with the articulated element. The securing means can be made in one piece with the articulated element. However, the securing means can also be an individual component, which can be handled independently of the other components of the articulated arrangement. It is decisive that in use as prescribed, cooperate with the articulated element.

With components of the articulated arrangement and of the lateral parts, in a support for the generic mobility a mechanism has been created that presents only a single degree of freedom of movement. Among other things, the invention is also based on the knowledge that this degree of freedom of movement of the mobility aid mechanism can already be blocked only by fixing or blocking only one of the rotating joints of the arrangement. articulated It is sufficient, for example, to block the possibility of turning an arm with respect to the articulated element disposed therein by means of a corresponding securing means. In this case, the articulated arrangement as a whole can no longer be moved and the two lateral parts of the mobility aid remain fixed in the operating configuration. Therefore, the means of assurance according to the invention can be carried out especially easily in the manufacture, structure and handling. Thanks to a means of assurance according to the invention, a locking mechanism is particularly easy to handle for a mobility aid.

35 The fixation of the articulated arrangement by means of the assurance is achieved by a union with non-positive adjustment.

The means of assurance is a fastener.

40 Thanks to the means of assurance according to the invention, it is achieved that the articulated arrangement and, therefore, also the mobility aid can be operated safely in the operating configuration. The securing means can be realized in particular in such a way that the structure of the mobility aid absorbs the forces and the moments that occur as a result of an abnormal operating state, so that they do not lead to a drive of the arrangement articulated This prevents unintended folding or folding of the mobility aid. Injuries and falls of the user can be avoided. Thanks to this, it improves the handling of a mobility aid according to the invention.

The fact of providing the means of assurance in at least one articulated element has the advantage that it is easily accessible if necessary. A securing means arranged in the lower ends of the 50 arms or in the lateral parts would require in case of a drive that the user should bend down to a comparatively low position. This goes hand in hand with a lot of effort for the target group for mobility assistance, that is, people with limited motor skills. The securing means arranged according to the invention in an articulated element can be accessed, on the contrary easily, for example by passing the hand under the seat of a mobility aid that is in the operating configuration.

55

According to the invention, the securing means stops a movement of one of the arms with respect to the articulated element rotatably disposed therein in the operating configuration. It has already been described above that it is sufficient to stop only one of the rotating joints of the articulated arrangement to prevent the displacement of the articulated arrangement as a whole. The securing means fixes the arm and the

articulated element arranged therein with respect to the other. This is preferably done at a point of contact, which is arranged at a distance from the bearing between the arm and the articulated element. Therefore, the contact point is arranged at a distance from a common axis of rotation of these two pieces. Then, these two pieces are joined together, on the one hand, by the axis of rotation and, on the other hand, by the contact point made by the securing means at two points arranged at a distance from each other. In this way relative rotating movements can be prevented. An insurance means of this type can be manufactured in a simple way and can also be improved in a simple way.

At least one of the arms can be arranged a counter part that cooperates with the securing means. 10 The counter part can be a cam, a friction surface, a drill and / or something similar. It is decisive that the counterpiece fixes the articulated arrangement in contact with the securing means in the manner described above. The counter part and the arm can be made as a component in one piece. The counter part is arranged in this case in an unmissable way in the mobility aid. However, the counter part can also be fixed by means of screws in the arm, it can be attached or also joined in another way. The counterpiece 15 can also be removably attached to the arm, in particular removable without tools. This way you can further improve handling.

According to the invention, the securing means is shown starting from one of the articulated elements to the travel path of the arm. The securing means thus delimits the travel path of the articulated element with respect to the arm. The securing means represents an obstacle in the travel path of the articulated element with respect to the arm. The securing means is made elastically rotating. It serves as a clamping flange or friction flange.

It exerts a frictional force on the arm, in particular on the counter-part on the arm, when it comes into contact with it. Thanks to the shape of the securing means, the finishing of the surface of the securing means, the material used and / or the like, the frictional force exerted by the securing means in the operation on the articulated arrangement can be adjusted if necessary. Depending on the frictional force exerted by the securing means, the necessary driving force changes to transfer the mobility aid to the operating configuration or transport configuration. Thanks to the choice of friction force, that is, the realization of the means of assurance, the mobility aid can be adapted, for example, to the type of user in question. The adaptation can be adjusted with respect to the user's body weight, the forces exerted by the mobility aid envelope and the like. Therefore, the mobility aid can be adjusted individually for the user in question. For example, a plurality of securing means made in different ways or of articulated elements provided with a securing means can be provided, which are all made in combination with the mobility aid according to the modular principle. For the user, this is linked to a particularly safe, comfortable and therefore improved handling.

The securing means made elastically rotatable serves to stop movements of the mobility aid 40 from the operating configuration to the transport configuration. The means of assurance is made as an obstacle that can be overcome in the movement path of the articulated arrangement. The securing means and a corresponding counterpiece, for example the arm, have friction with each other when they are in contact. To release the contact, the driving force acting on the articulated arrangement must be larger than the frictional force resulting from the contact of the securing means with the counterpart. The securing means therefore increases in a partial area of the displacement path of the articulated arrangement the driving force necessary for a displacement. When the driving force is sufficiently high, the securing means can be passed through the counter part with an elastic deviation. Therefore, a step not in accordance with the requirements of the mobility aid to the transport configuration is prevented by the means of assurance, instead allowing a desired step 50 and, therefore, as prescribed, by the application of a corresponding force.

A step of the mobility aid to the transport configuration can be carried out in particular without direct operation of the securing means. The user must only actuate the articulated arrangement in a known manner, specifically with a force that exceeds the clamping force of the securing means 55 exerted on the articulated arrangement.

According to an advantageous variant of the invention, at least one articulated element has two braces, which house the corresponding arm with each other and which are arranged in the arm rotatably around a common axis. This shaft passes through a hole provided in the arm. The two braces can be made congruently. The

two braces can extend one in parallel to the other. Thanks to this embodiment of the articulated element it can be achieved that the arm and, therefore, the entire articulated arrangement can move in a particularly reliable way. Thanks to the two braces that house the arm between each other, the forces and moments that occur during operation are distributed regularly. Thus, a tilt or twisting of the components of the articulated arrangement can be prevented. Improves the handling of mobility aid as a whole.

In the two braces of an articulated element, securing means can be provided, which extend from the braces towards each other and peek into the travel path of the arm. The securing means can extend curved towards each other. The securing means may extend in a parabola shape towards each other. The previously described property of the securing means of exerting a frictional force on the arm and / or the articulated element can thus be further improved. The securing means are shown from two sides opposite the travel path of the arm. Therefore, the arm cannot avoid contact with the securing means because it is passed next to the securing means, by an elastic turn or something similar. Thanks to the above-described embodiment, the arm is brought into force during a movement in contact with the securing means. This further increases the operational safety of the mobility aid.

According to an advantageous variant of the invention, a bearing for the housing of the articulated element is arranged in the arm, at a distance from the ends of the arm. Thanks to this, the upper end of the arm protrudes freely from the bearing, for example. Functional elements can be arranged at the free end of the arm. The configuration according to the invention of the articulated arrangement with a securing means is that which allows the two arms of the scissor joint to be arranged at a comparatively acute angle with respect to each other in the operating configuration. An acute angle of this type is problematic in known devices, since an unintended step of the mobility aid to the configuration of transport by lateral compression forces acting for example on the lateral parts can correspondingly occur so much easier. the sharper the angle between the two arms. However, since according to the invention the securing means is provided, the scissor-type articulation arms can be fixed securely, regardless of their angular position, only by the choice of a correspondingly made securing means.

30

According to an advantageous variant of the invention, the two arms of the scissor joint are rotatably connected to each other with an arrangement of semi-riders interspersed at an intersection point. The arrangement of semi-riders preferably has several individual half-riders. These can be realized in such a way that on a first side they are made corresponding to the shape of the arms and that on a second side they make available a sliding surface. In this case, a semi-rider of this type can be arranged in each of the two arms, the sliding surfaces of the semi-riders being brought into contact with each other and then fixing the two arms at the intersection point rotatably with each other. . In this way a defined surface contact can be achieved at the point of intersection. A defined contact of this type cannot be achieved, for example, with arms of a circular cross-section, when these slide one directly into the other with their surfaces. In this case there is only a specific contact, which harbors the danger of an inclination and a slope of one arm with respect to the other. In this sense, the handling improves even more thanks to this variant.

As already described above, transverse braces can be arranged at the upper ends of the arms, which are used for the accommodation of functional elements. The upper ends of the arms can be independent. The functional elements can be a groove for flange for the housing of a flange of a seat and / or a hole for the accommodation of a telescopic carrier bar. Other functional elements are conceivable. Therefore, the articulated arrangement according to the invention can synergistically fulfill a double function, that is, on the one hand, the possibility of displacement between the transport configuration and the operation configuration and, on the other hand, can set provision other useful functions. It is added that a functional element arranged in the area of the upper ends of the arms is also automatically tightened when the mobility aid is pressed. This improves the handling even more.

According to an advantageous variant of the invention, the transverse braces have a convex surface, which in the operating configuration tilts downwards, to the side opposite to the other transverse brace, respectively. The convex surface may become the operating configuration in a horizontal plane in the direction of the other transverse brace, respectively. This variant is advantageous, in particular, when the transverse brace has a groove for a flange for housing a flange of a seat. The convex surface may in this case join the edge facing the other transverse brace,

respectively, of a transverse brace in a continuous extension with the groove for the flange arranged below the surface convexly. In this case, a seat that rests on the surface convexly does not come into contact with sharp edges and the like. This increases the safety of operation and durability of the seat, which also improves handling for the user as a whole.

5

In addition, a walker with two lateral parts is disclosed, each lateral part comprising a wheel beam and a handle beam arranged in the transverse direction with respect to this, a front wheel and a rear wheel being arranged on the wheel beam, a handle is arranged in the handle beam on a side not oriented towards the wheel beam, the two lateral parts being joined by an arrangement articulated in such a way that the two lateral parts are movable in translation between an operating configuration , in which they are separated, and a transport configuration, in which they are joined, for which the articulated arrangement has two arms that intersect at an intersection point, an articulated element being rotatably housed in each arm, each arm being rotatably connected with one of the side parts and the articulated element being connected correspondingly T of an arm 15 rotatably with the other side part, respectively, characterized in that at least one articulated element is provided with a securing means, which fixes the articulated arrangement in the operating configuration.

twenty

25

Other advantages and characteristics result from the description set forth below in the Figures. They show:

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

a way of realizing a mobility aid according to the invention made as a walker;

a detailed view of the upper articulated arrangement of the device of Figure 1;

a detail of the upper part of the arrangement articulated in the transport configuration;

the articulated arrangement as an individual component; Y

a way of realizing a walker with other characteristics.

Figure 1 shows an embodiment of a mobility aid according to the invention made as a walker 1. The walker 1 has two lateral parts 2, 3. Each lateral part 2, 3 comprises a wheel beam 4 and a handle beam 5. The handle beam 5 is arranged transversely with respect to the wheel beam 4.

The two lateral parts 2, 3 are arranged at a distance from each other. They are joined together by an articulated arrangement 6. The articulated arrangement 6 comprises a scissor joint. This is formed by two arms 7, 8 that intersect at an intersection point 15. A lower end of the two arms 7, 8 is disposed 35 respectively on the side part 2, 3. The arms 7, 8 are arranged so rotating around a first bearing 9 in the two lateral parts 2, 3.

The articulated arrangement 6 further comprises two articulated elements 10, which are arranged in the two arms 7, 8. Each articulated element 10 is rotatably arranged around a second bearing 11 in 40 the corresponding arm 7, 8. The articulated elements 10 are also rotatably arranged around a bearing 12 in the lateral parts 2, 3.

The operation configuration of the walker 1 is shown in Figure 1. This operation configuration can be changed by pulling up a seat 18, which is connected to the upper ends 45 of the two arms 7, 8. In this way the arrangement is activated articulated 6. The two lateral parts 2, 3 move in translation towards each other. This is done because the upper ends of the two arms 7, 8 move towards each other, turning the two articulated elements 10 in opposite directions around the bearings 12. A step of the walker 1 of the operating configuration represented to the configuration Transport requires, therefore, that the articulated elements 10 and the second bearings 11 of the arms 7, 8 50 can rotate in opposite directions.

From there the invention. In order to fix the walker 1 in the operating configuration shown in the Figure, in the articulated elements 10 there are provided securing means 13. For this, the articulated elements 10 are made as braces 14. Each articulated element 10 comprises two braces 14, which they house the corresponding arm 7, 8. The securing means 13 are part of the braces 14. The securing means 13 and the braces 14 form a component made in one piece.

The securing means 13 peek into the travel path of the arms 7, 8. This can be seen in particular in Figure 4. The two securing means 13 of two braces 14 cooperating with each other are

They extend towards each other. They therefore narrow the width of light that extends between the two braces 14.

The securing means 13 can be rotated elastically. If a sufficiently large driving force is used, the arms 7, 8 can be moved elastically deforming the securing means 5 13. The securing means 13 therefore guarantee that a step of the walker 1 to the configuration of transport until a minimum force has been applied, defined by the realization of the securing means 13. This minimum force can be adjusted for example individually according to the user of the walker 1.

10 At the point of intersection 15, the two arms 7, 8 are rotatably joined together. For this, a threaded rod is used, which is passed through the two arms 7, 8 and which is secured with nuts. However, arms 7, 8 do not slide directly into each other. Semi-riders 16, which are arranged between the two arms 7, 8, are provided on the contrary. The semi-riders 16 have a housing, corresponding to the shape of the arm 7, 8. On the opposite side, the half-riders 16 have a sliding surface. . Two semi-riders 16 15 can slide one on top of the other with their sliding surfaces.

In the articulated arrangement 6, at the upper free ends of the arms 7, 8 there are cross braces disputes 17. This is represented in particular in Figure 3. The cross braces 17 extend at least in part in the direction of travel of the walker. . The transverse braces 17 serve to accommodate 20 functional elements. They are shown in detail in Figure 3. A hole 21 may be provided in the transverse brace 17. A carrier bar 19 can be housed in this hole. The carrier bar 19 can be arranged telescopically in the transverse brace. This means that the carrier bar can be deployed, if necessary, by being housed securely inside the transverse brace 17. On the carrier bars 19, for example, a bag can be arranged. The bag can have stable side parts 25 and otherwise a flexible fabric, so that it is foldable together. Ties can be made on the side parts of the bag, so that the bag can be placed by sliding on the carrier bars 19.

In the transverse braces 17, grooves for flanges 22 can also be made. These are used to accommodate a flange 23, which for example forms part of a seat 18. The seat 18 can thus be fixed in a particularly simple and well manageable way in the walker 1, since it only has to be inserted with its flange 23 into the groove for the flange 22.

The transverse braces 17 preferably have a convex surface 24. This surface 24 joins the groove for the flange 22, on the one hand, with a ridge of the transverse brace 17, which in the operating configuration is oriented in the direction of the transverse brace 17 respectively opposite. In the operating configuration, the seat 18 is tensioned between the two transverse braces 17. The convex surface 24 means that the seat 18 must not be made to pass through sharp edges, corners or the like. This increases the life of the seat 18 and also the safety in operation. For the user, this improves the handling of the walker 1 as a whole.

40

In Figure 2 it can also be seen that a hook 20 can be arranged in one of the carrier bars 19. The hook 20 can be fixed in a secure way in the carrier bar 19. The hook 20 has a recess as an elongated hole open towards a side. This notch of the hook 20 can be engaged in the transport configuration in the other carrier bar 19, respectively. Thus, the two carrier bars 45 19 and, therefore, the entire articulated arrangement 6 can be fixed to each other. In this way, the transport configuration can also be ensured to prevent an unintended passage to the operating configuration.

Figure 5 shows a walker 100. This presents an embodiment of the invention and also other 50 features, which can interact synergistically with the features according to the invention. The other features may be provided in combination or independently of the others in the walker 100.

The walker 100 has two lateral parts, which are joined together by means of an articulated arrangement 106. Each lateral part has a handle beam 101 and a wheel beam 102. The handle member 55 101 is arranged transversely with respect to the wheel beam 102 In the upper end of the handle beam 101, holes 103 are arranged. In the wheel beam 102 a front wheel 105 and a rear wheel 104 are respectively arranged. A user can take the walker 100 in the holes 103 and can then move guided by this by moving the walker 100.

The articulated arrangement 106 is made as a scissor joint. Two upper ends of the articulated arrangement 106 are rotatably disposed in the handle rails 101. The handle rails 101 are made adjustable in height. This has an outer tube and a guided inner tube that can be moved in it. A cap 110 is arranged on the upper end of the outer tube. This is used for the accommodation of a fastening element 111, which is used to drive the height adjustment mechanism of the handle beam 101.

The upper end of the articulated arrangement 106 is also arranged in the cap 110. For this, the cap 110 has a corresponding housing. This can be done as a drill to accommodate a pivot shaft. In addition to this second functionality, the cap 110 has still two other functions.

On the one hand, it is a function of support for a transverse brace fixed at the upper end of the articulated arrangement. This transverse brace sits in the operating configuration against the support 113.

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On the other hand, it is a support 112 provided in the cap 110.

This support 112 serves to accommodate functional elements, such as a support for a crutch 114, as shown in the Figure. However, other functional elements 20, for example an umbrella stand or something similar, can also be attached to the support 112. The decisive thing is that the functional elements can be arranged in the holder 112 in a removable and interchangeable manner. The support 112 may be made as a rail with a T-shaped profile. This can extend substantially in the vertical direction. One end of the rail may be thickened so that a piece placed by sliding on the support 112 rests there.

25

Therefore, with the cap 110 it is possible to make several different functions available synergistically.

The handle beam 101 and the wheel beam 102 are rotatably connected to one another by means of a connection element 107. The connection element 107 houses one end of the attachment beam 101 with the fixed position. The connecting element 107 is rotatable about an axis passing through the wheel beam 102. The handle beam 101 and the wheel beam 102 can therefore be rotated relative to each other.

However, the union element 7 also fulfills other functionalities. On an inner side it can have an articulated housing 108. This serves to accommodate a lower bearing of the articulated arrangement 106. The connecting element 107 can also accommodate a support 109. This can preferably be rotatably accommodated in the element of union 107. The support 109 can be arranged in a bolt or a screw, which at the same time forms the axis of rotation of the union element 107. In this sense, several different functionalities can be combined synergistically in the union element 107 .

40

The support 109 can for example serve to accommodate the foot of the crutch 114. Since support 109 is rotatably housed, other objects or a crutch 114 arranged at an inclined angle can also be accommodated. The support 109 may be made in the form of a basket.

45 A front protection 115 is provided above the front wheels 105. The front protection 115 protrudes from the front wheel 105 in the direction of travel of the walker 100. The front protection 105 serves to prevent contact of the front wheel 105 with obstacles . In this way the formation of annoying footprints in obstacles such as walls, doors and the like can be prevented.

50 In the area of the rear wheels 104, the walker 100 has a edge protector 116. This extends from the wheel beam 102 to the axis of the rear wheel 104. The edge protector 116 serves to prevent a contact of the rear wheel 104 with obstacles. The edge guard 116 also serves to accommodate a brake for the rear wheel 104, as well as a protector for this brake. In this sense, also the edge protector 116 synergistically gathers several functionalities.

55

The handles 103 are further characterized in that they have an integrated brake lever mechanism. The handle 103, on the one hand, and the brake lever, on the other hand, therefore form a component that can be operated as a unit. User management is facilitated, because it has to deal with fewer individual components. In addition, thanks to the reduction in the number of components the susceptibility is reduced

to failures of the walker 100.

Empunaduras 103 are also made ergonomically. This also facilitates handling. 5 List of reference signs

 one

 Walker

 2

 Side

 3

 Side

 10 4

 Wheel beam

 5

 Handle beam

 6

 Articulated provision

 7

 Arm

 8

 Arm

 15 9

 First bearing

 10

 Articulated element

 eleven

 Second bearing

 12

 Bearing

 13

 Means of assurance

 2014

 Strut

 fifteen

 Intersection point

 16

 Semi-rider

 17

 Cross brace

 18

 Seat

 25 19

 Carrier bar

 twenty

 Hook

 twenty-one

 Drill

 22

 Flange groove

 2. 3

 Flange

 30 24

 Surface

 100

 Walker

 101

 Handle beam

 102

 Wheel beam

 103

 Handle

 35 104

 Rear wheel

 105

 Front wheel

 106

 Articulated provision

 107

 Union element

 108

 Articulated accommodation

 40 109

 Support

 110

 Cap

 111

 Fixing element

 112

 Support

 113

 Support for

 45 114

 Crutch

 115

 Frontal protection

 116

 Edge Protector

Claims (8)

1. Mobility aid, in particular walker (1) or wheelchair, with two side parts (2, 3), which are joined together by an articulated arrangement (6) such that the two side parts (2 , 3) are 5 movable in translation between an operating configuration, in which they are separated from each other, and a transport configuration, in which they are joined, for which the articulated arrangement (6) has two arms (7, 8) that are they intersect at an intersection point (15), an articulated element (10) being rotatably housed around the axis of a bearing (11) being arranged on each arm, each arm (7, 8) being rotatably connected with one of the lateral parts (2, 3) and the corresponding articulated element (10) of one arm (7, 8) being rotatably connected with the other lateral part (2, 3) respectively, being provided in at least one articulated element (10) an assurance means (13) that fixes the articulated arrangement (6) in the operating configuration, characterized in that the assurance means (13) appears from one of the articulated elements (10) to the travel path of one of the arms (7, 8), this The securing means (13) have been made as a fastening element and elastically collapsible, so that it exerts a frictional force on this arm in contact with the arm (7, 8). 2. Aid for mobility according to claim 1, characterized in that at least one of the arms (7, 8) is arranged a counter part that cooperates with the securing means (13). 20 3. Mobility aid according to one of the preceding claims, characterized in that at least An articulated element (10) comprises two braces (14), which house the corresponding arm (7, 8) between each other and which are arranged in the arm (7, 8) rotatably around a common axis. 4. Mobility aid according to claim 3, characterized in that the two braces (14) 25 have securing means (13), which extend towards each other starting from the braces (14) and which are peek into the travel path of the arm (7, 8). 5. Mobility aid according to one of the preceding claims, characterized in that a bearing (11) for housing the articulated element (10) in the arm (7, 8) is arranged at a distance from the 30 arm ends (7, 8). 6. Mobility aid according to claim 5, characterized in that the distance of the bearing (11) to the ends of the arm (7, 8) is greater than the length of the articulated element (10). 35 7. Mobility aid according to one of the preceding claims, characterized in that the two Arms (7, 8) of the scissor-type joint are rotatably connected to each other at the point of intersection (15), with an arrangement of semi-riders being inserted. 8. Mobility aid according to one of the preceding claims, characterized in that in the upper 40 ends of the arms (7, 8) transverse braces (17) are arranged, which are used for accommodation of functional elements. 9. Mobility aid according to claim 8, characterized in that the transverse braces (17) have a groove for a flange (22) for housing a flange (23) of a seat (18) and / or a 45 drill (21) for housing a telescopic carrier bar (19). 10. Mobility aid according to claim 8 or 9, characterized in that the transverse braces (17) have a convex surface (24), which in the operating configuration tilts downwards, towards the opposite side of the other brace transverse (17) respectively.