JPS59181156A - Exchangeable holder for walking aid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to a replaceable walking aid dowel according to the concept of claim 1.

A retainer for an exchangeable butt of a walking aid support foot, in which the butt is screwed or pushed into the frame recess of the support foot, or alternatively at the lower end of the support foot. A type that is covered like a cap through a cap is well known.

All these known solutions have deficiencies. This is usually used for replacing the ferrule, e.g. with special breakaway tools,
This is because special tools such as screwdrivers and wrenches are required, and the stone taps are subjected to a relatively high load, which causes fatigue over a long period of time.Furthermore, the replacement work takes a relatively long time. This is especially true when physically disabled people walk during winter, when surfaces of different nature appear at short intervals, such as an icy road or a pile of stones. In some cases, people with disabilities experience very different skid resistances. In such cases, if it is laborious to replace the butts, it puts an additional burden on the disabled person. In such cases, the safety of walking is significantly impaired because the replacement of the stone abutment is abandoned.

The underlying problem of the present invention is to provide a holder according to the concept of claim 1, which allows the bottom member to be replaced quickly and extremely easily and which functions reliably over a long period of time. It's about doing.

This problem was solved by the features described in the characterizing part of claim 1.

The snap-on safety mechanism can be operated with very little force consumption (it can be removed in a short time and does not require any tools); therefore, the stud can be replaced with minimal effort. Yes, because it is easy to operate, people with disabilities hardly get dirty when replacing the stone tip, making the replacement work more comfortable.

According to the present invention, the snap-on safety mechanism is no longer necessary because the cap sleeve fixing the stud to the support foot is removably connected to the frame edge. Depending on the special requirements imposed on the machine, it can be constructed independently of the shape and condition of the ferrule.

Stone studs are rarely subjected to any load during replacement work.

The area of the snap-on safety mechanism is therefore designed to provide the greatest possible wear resistance and reliable operation, and the area of the stone edge is designed to ensure the best possible transmission of forces from the ground to the walking aid. It is possible to optimally configure each area independently of the other areas so that it is obtained.

In particular, if the support foot is connected to the support pipe of the walking aid via a ball and socket joint, the snap-on safety mechanism can be constructed particularly simply in terms of construction.

In that case, the safety mechanism must only absorb a precisely defined and limited axial tensile force, rather than a moment. The reliable operation and service life of the snap-on safety mechanism is thereby additionally increased.

The holder according to the invention is equally suitable for fixing studs designed as rolling bodies and for studs with a plate-shaped tread on the bottom side. The retainer according to the invention comprises:
Therefore, it can be used versatilely. The frame rim thus serves as a universal mating surface, adaptable both to the dish-shaped butt of the yuzu and to the open-ring sleeve on both sides for the axial fixation of the rotary butt. A rotary treadmill is constructed with rubber elasticity, and one side of the tread surface has, for example, a lug fist pattern, and the other side has spikes. Since it is made of a material of sufficient strength, the cap sleeve can be molded integrally with the stud.

The slip fit between the frame edge and the cap sleeve is
Follows the tilt of the holder. In this case, a primarily point snap-on safety mechanism is already sufficient to securely secure the sleeve to the frame edge against dislodgment.

The holder according to claim 5 can be operated extremely easily with the thumb and index finger. The locking surface area and the cap
The conformal fit with the respective undercut axial slit of the sleeve results in complete release of the cap.
The sleeve can be removed from the frame edge without resistance. Undercut axial slits are easy to make. This is because these slits terminate at the upper edge of the cap sleeve. Snap bins can be fitted with relatively large bin heads without compromising the snap-on safety mechanism. Such a pinhead additionally improves the operability of the removable snap-on safety mechanism. The reliability of the function of the retainer is additionally enhanced, since the connection between the cap sleeve and the frame edge can be released by simultaneously manipulating, ie pressing, two snap pins. Foot accidentally Q'J
Even if a bump occurs and, for example, one snap pin is manipulated and pushed into the unlocked position, the wooden snap joint will not completely disengage.

The other snap bins are still in positive engagement with the other undercut axial slits. This holder can therefore be used in any case where two arbitrary axially aligned objects are strong in tension and can withstand disturbing forces. In this case, they must be releasably coupled to each other.

Due to the cylindrical design of the guide surface area, the locking surface area and the unlocking surface area, the guide in the support foot can have a simple geometry. That's all (
The cylindrical locking/unlocking surface area serves to allow the undercut axial slit to easily slide past the snap bin. The cylindrical surface area of the snap jar therefore gradually causes the undercut axial slit to lie exactly co-axially with the snap jar.

According to another characteristic of claim 7, the snap bins are prevented from falling off in the - plane, and the angles of the bins are precisely defined, independently of the position of the other bins. A locking position is assigned. Since the force acting on the carriage plug acts in a direction perpendicular to the direction in which the snap pin moves, the compression coil spring that applies the initial tension to the snap pin can be configured to be extremely weak. Therefore, this holding operation becomes even more convenient. The bottle, which projects into the diametrical hole, is extremely simple in construction and can reliably perform the stopper function. This food bottle can, for example, be inserted into the support foot in a direction parallel to the axis of the cap sleeve and cooperate with a snap-bottle turning point in the guide surface area.

According to the features of claim 8, the snap connection is effected automatically by simply pressing the cap sleeve in the axial direction.

In order to make the push fit of the cap and sleeve even easier and further reduce the wear of the snap safety mechanism,
The features according to claim 10 are particularly advantageous. In that case, the cap sleeve can be pushed onto the frame edge with the axial slit relatively imprecisely centered on the snap pin, and alignment can also be achieved by pushing it axially away. The snap bottle can also be automatically pushed in, creating a holder with strong tensile strength.

If the pin head with a mating part is guided in the recess of the cap sleeve and covers the undercut axial slit, the risk of contamination of the snap safety mechanism is significantly reduced and, as a result, the reliability of the function of the retainer is increased. It can be further enhanced.

The snap pin must protrude from the frame edge or support foot in the locked position by the following dimensions:

That is, it must protrude by a value resulting from the sum of the width or height of the bottle head, the following unlocking area, the conical surface area as the case may be, and the locking surface area. For this reason, in a pure hollow cylinder configuration of the cap/sleeve with a relatively thin wall thickness for the purpose of weight reduction, the bottle head cannot be completely received within the cap/sleeve. According to another characteristic described, it is particularly advantageous that the snap pin can be completely accommodated in the shell surface of the canopy sleeve, without changing the dimensions or the weight of the holding device. The dimensions of the width of the locking/unlocking surface area of the snap bin leave considerable room for improvement. Retraction of the bin head is very easily achieved, so that it is difficult for the bin head to accidentally hit an object. Even if the support foot gets stuck in snow, mud, etc., no pressure is applied to the snap bin from the outside.

This type also has the additional advantage that no external dirt can enter the functional surface area of the snap bin.

An embodiment of the invention will now be described with reference to the drawings: FIG. 1 shows a crutch 1 with support pipe 2.
holds the support foot 3.

A replaceable abutment 4 is attached to the support foot 3. The stud 4 is formed, for example, by a block having rubber elasticity, and this block protrudes by a certain amount from the underside of the support at plate. The support foot plate is either fixedly connected to the support pipe 2 or connected to the support pipe 2 via a self-contained joint, for example a ball joint. If a ball joint is used, an elastic bellows 5 is used at the transition from the support pipe 2 to the support foot 3 to shield the universal joint from the surroundings.

The structure of the support foot 3 is shown in FIGS. 2-5. A ball notch 7 is formed in the axially symmetrical support 6 of the support foot 3, and this ball notch 7 engages with a ball pivot (not shown), and this ball pivot is connected to the cane 1. It is received in the support pipe 2 by a clamp fit.

An elastic bellows 5 extends from the outer surface of the support 6 to the ball pivot and on the one hand shields the ball joint surfaces outwardly and on the other hand keeps the smooth ball joint in a neutral central position. I will guide you back. The support 6 is essentially in the form of a plate, which has a high frame edge 8 projecting towards the bottom. In the embodiment shown, the frame edge 8 is
It has a generally annular design in which the studs 4 are guided and received on the sides. The frame edge 8 can be formed by a continuous ring. In the illustrated embodiment, a frame edge is formed which is interrupted by plane-parallel planes 9 at two diametrically opposite locations.

The plane-parallel plane 9 extends up to the radial collar 10. The function of this collar 10 will be explained in detail later.

The outer surface 11 of the frame edge 8 serves as a movement fit for the capping sleeve 12, which can be pushed on from below. The sleeve 12 supports the foot 4 in the lateral direction of the foot 3,
It is fixed in both axial directions. Fixation of the position in the lateral direction is achieved by suitably adapting the inner surface to the limiting surface of the stud 4. In the illustrated embodiment, the ferrule 4 is constructed as a rotating ferrule having rubber elasticity. A pattern 41 is formed on one side of the plane-parallel surface of the stone butt, and a steel bin 42 is provided on the other side. The bottle 42 is embedded in a rubber rubber block or is embedded in a rubber block. In Figure 4, a stone stub 4 is shown by a broken line. The radial end face 42 is coplanar with the end face of the collar 8. The lower or bottom collar face of this collar 42 rests against the radial layer 13 of the cap sleeve 12. The radial layer 13 prevents the ferrule 4 from disengaging in the axial direction when the sleeve 12 is fixed to the frame edge 8 or to the support 6. The fixation takes place via a snap-on joint 14 which can be removed from the outside and which will be explained in more detail below.

The snap joint consists of a snap pin 15 and a diametrical snap hole 16 in the cap sleeve 12. These snap pins 15 are received and guided in holes 16 extending diametrically in the support 6 and are mutually supported by means of helical compression springs 17. The spring 17 is, for example, locked in the pin 150 and the cylindrical hole 18. Spring 1
7, the pin 15 is radially outward, FIGS. 2 and 6.
It is pushed into the locking position shown in the figure. The locking position is determined by a stopper body. In the illustrated embodiment, the stopper body is formed by a pin 19. This stopper body 19 projects into the diametrical hole 16,
Turning point 2 of the pin 15 at the locking position of the snap pin 15
The radial layer 21 of 0 and the abutment are in contact. The stopper body or pin 19 is pushed into the support surface of the support 6 from below, the head of the pin 19 being embedded in the support 6. The snap pin 15 has a plurality of graduated functional zones in the axial direction. That is, radially inwardly with respect to the support foot axis there is a guide area 151.
Following the turning point 20, a locking surface area 152, which in the illustrated example is cylindrical, is provided, followed by a conical area 153, an unlocking surface area 154 and a pin head 155, respectively. ing. In the locking position of the pin 15, the locking surface area 152 projects from the plane-parallel surface 9 of the support 6 by a dimension (V). Due to the pressure operation of the bottle head 155, the snap pin 15 releases the compression coil spring 17.
The locking surface area 152 and the conical surface 152 are now inside the support 6 . In the unlocked position of the pin 15, the unlocking surface area 154 is therefore in close proximity to the plane-parallel surface 9.

The cap sleeve 12, whose inner surface is in mating contact with the curves of the frame edge 8, is fitted with an end face 22 at a diametrically opposite point in order to adapt to the configuration of the snap pin 15.
'Y have. These end faces 22 are connected to the sleeve 1'
2. When it is pressed into place, it engages with the parallel surface 9 of the support body 60 with a guiding function.

In the area of these end faces 22, the sleeve 12 therefore has an accumulation of material. Thickness of this stack (S)
, the bottle head 155 is in the locking position of the snap pin 15, and the cap three is in the radial direction! The value is set to a value sufficient to be located inside the outer shell surface of the pipe 121. The outer surface of the bin head 155 is flush with the cylindrical outer surface of the sleeve 12.

The cap sleeve 12 is constructed symmetrically with respect to a plane 24 which, in the pressed-on state of the sleeve 12, coincides with the central plane of the diametric bore 16 of the support 6. An axial undercut slit 26 , which is configured symmetrically with respect to the plane 24 , is surrounded by the retaining edge of the sleeve 12 . The slit 26 is geometrically matched to the configuration of the snap pin 15. The undercut axial slit 26 has a radial portion (T
) Y, and this part (T) has a thickness (S)
With a false value of , the axial dimension (v) of Y has, in particular, the axial portion of the unlocking surface area 154 (less than the value of l). This is followed by a recess 27 in which a bin head 155 is received in each case in a form-fitting manner.

The cutout 27 has a stop shoulder 28v. When the snap joint 14 is released, the bottle head 1 is
The inner surface of 55 is pressed.

The axial slit 26 has an undercut surface 29 . This surface 29 is formed by the cylindrical jacket part surface, which part surface corresponds to the locking surface area 1 of the snap pin 15.
52 can be positively received. The upper side of the undercut surface 29 ends at a narrow spot 30 formed by two corner edges, the width of which is (
W) is somewhat larger than the thickness or diameter of the unlocking surface area 154 of the snap pin 15 to which it is assigned.

From the narrow point 30, the slit 26 widens slightly towards the upper edge 25 of the cap sleeve 12;
The snap pin 15 can be easily fitted into the slit 26.

In order that when the cap sleeve 12 is pressed onto the frame edge 8 of the support 6, the snap joint is automatically created without the bottle head 155 being forced inwards, the slit 26 is formed at a narrow point. 30. In a region that expands somewhat toward the upper edge 25, it has a wedge-shaped chamfer 31 facing inward in the radial direction (Fig. 2,
Figure 5).

These chamfers 31, when pressed onto the frame edge 8 of the cap sleeve 12, first come into contact with the conical surface 153 of the snap pin 15, so that the unlocking surface area 154 passes into the diametrical hole 16 of the pin 15 and into the slit 26. Narrow part 3
Push it in until it can slide through 0. When the cap sleeve 12 is fully placed over the frame edge 8, the pin 15 snaps into place under the action of the compression coil spring 18;
It engages undercut surface 29 in positive engagement with locking surface area 152 .

To prevent the snap joint 14 from rattling, the undercut 29 has a locking surface area 152 in the face locking position.
and cooperate so that the sleeve 12 is elastically pulled upward in the locked position. The stiffness cooperation can be performed in the following manner, for example, when attaching a stone butt 4 having im-elasticity.

That is, the radial collar 42 of the protrusion @ 4 is attached to the sleeve 1
The inwardly directed ring-shaped shoulder 13 of 2 allows the axis of the undercut surface 29 to be aligned with the central axis of the diametrical bore 16 only after it has been axially deformed by a certain small dimension. It will be done.

In the illustrated embodiment, the stud 4 is supported on the support 6 via a radial collar 42 and an end face opposite the bottom. This support is also provided through steel pins 43.

In this case, of course, these pins 43 are attached to the support body 6.
Care must be taken to prevent it from being forced into the flat support surface 61 of the.

As can be seen from the figure, the snap engagement or snap joint 14 is formed by the form-fitting of the pin head 155 into the cutout 27 and by the fact that the upper edge 25 is flush with the ring shoulder 10 of the support 6. This reliably prevents dirt from entering.

As a result, the holder can reliably perform its function even when using the cane on muddy ground.

The holder is not only suitable for removably mounting replaceable cylindrical studs, but is also particularly suitable for fixing dish-shaped supports. These supports can be used with particular advantage when a disabled person walks on very soft ground. In that case, the cap sleeve 12 is either fixedly connected to the stud 4 or molded integrally with the stud.

If not, configure as described above.

In that case, the introduction of the supporting force from the stone stud 4 to the support body 6 is as follows:
This can take place via the upper edge 25 of the support 6 and the radial layer 10 and/or via the end face of the frame edge 8.

If the support 6 is connected to the support pipe 2 via a ball joint, the sleeve 12 can be guided relatively downwards, so that the studs 4 still protrude only a few mm from the radial scrap 13. Become. If the sleeve 12 only has a small chamfered portion 32 at the lower end, the support foot 3 is attached to the entire surface of the stud 4, restricted by the ball joint.

The material of the cap sleeve 12 and the snap pin 15 can be aluminum or a dimensionally stable plastic, for example HDPE plastic. The support foot 3 is thereby extremely lightweight;
As a result, disabled people are less fatigued during relatively long walks, even when using a dish-shaped, large-area stone shovel.

When the snap pin 15 is in the unlocked position, the axial pin 19 advantageously contacts the other radial layer of the turning point 20, so that the snap pin 15
The position of is defined and can be maintained without any force acting on the cap sleeve 12. 'A further embodiment of the sleeve 12 is shown in FIGS. 7 and 9. This variant has reference number 12
'have. The structure of the upper section and the interior is the same as that of the Q sleeve 12 described above, so a detailed explanation will be omitted. Is there an equal reference number for equal configurations? It is useful.

The sleeve 12' shown in FIGS. 7 and 9 is the sleeve 1 described above.
What distinguishes it from 2 is the flange part.

This flange portion is connected to the bottom end surface 12 of the sleeve 12'.
2' and extends outwardly, projecting generally from the radial plane. The flange 121' is pure,
Preferably, it is constructed with a precise radial flange. This radial flange is advantageously molded integrally with the cylindrical body of the cap sleeve 12', which is preferably made of plastic. Radial flange 12
1' does not protrude from the end face 122' in the axial direction.

The outer diameter of the flange 121' is approximately the same as that of the sleeve 1.
It corresponds to two to four times the diameter of the bottom body 4 received in 2'.

For example, the stone abutment 4 can be configured as a rotating body. Regarding this stone 4, in relation to Figure 2,
As already mentioned.

The following can be understood from the figures and the above description.

That is, if the cap sleeve 12' is a snap fitting 14 instead of the sleeve 12 shown in FIG. When attached to the support body 6 through the support foot, the following support foot is obtained.

That is, as before, it has four ferrules which project axially from the sleeve 12' and are, of course, surrounded in a generally umbrella-like manner by a radial flange 121'. This configuration has the following important advantages: In other words, with such a supporting foot, a disabled person can walk safely on hard, slippery or even extremely soft surfaces, for example on the coast, in wetlands, on snowy ground, and even on rock-bottomed surfaces. This means that there is no need to replace it. This is because when the bottom is hard, the stone abutment 4, which is configured as a rolling body, supports the load while optimally adapting to the particular ground and weather conditions. In other words,
Either treads with spikes, non-slip edges for regular surfaces, or treads for sanitary facilities (toilet etc.) are selectively directed towards the ground or floor below. The studs can then be turned or replaced very easily, as before. As before, to the stone butt fixing part,
This is because it is easily accessible. Of course, physically disabled people
During his free time and vacations, he sometimes takes long walks, and sometimes runs into soft ground.

In that case, the ferrule 4 sinks into the ground due to its relatively small supporting surface. When this immersive movement occurs, in the case of conventional walking aids, it is necessary to stop walking, but in the case of the holding device of the present invention, it goes without saying that after a little immersion - this The immersion length is the axial recovery degree vA
K, J: As a result of the effective counteraction exerted by the seven radial flanges 121', which can be structurally controlled, the flanges 121 are immediately mounted on the support foot.
' cooperates with the stone butt 4 to completely absorb the supporting force. By using a flange '121'v whose outer diameter is twice the diameter of the stud 4, the supporting force is effectively reduced, so that disabled people can comfortably carry it without any danger and without expending any force. , damp coast or muddy? The above-mentioned advantages are particularly noticeable if the support 6 is connected via a universal joint 7, for example via a ball-and-socket joint, to the support visor 2 of the walking aid 1. This is because in that case, the butt 4 and the generally radially extending flange 121' maintain an unchanged postural relationship Y with respect to the supporting ground or floor during the entire process of movement. It is from. In this case, bending of the radial flange 121' hardly causes stress. This also applies to the sleeve 1 even in the case of a relatively long protruding flange 121'.
This means that an excessive stress of 2' will not occur.

This is because when installing the support foot, if the butts 4 and 7 flange 121' are not yet aligned parallel to the ground or floor below, only a very small force will still be applied, and furthermore, the supporting force This is because immediately after the support foot 3 is introduced through the support pipe 2, the support foot 3 is applied parallel to the ground or floor by means of a universal joint, for example a ball joint. 7 lange 121' and sleeve 12
In this way, no strain is applied to the joints between the two and the snap joints. In particular, almost no load is applied to snap joints in the following cases. That is, the sleeve 1 is supported on the frame edge 8 of the support 6 via the inwardly directed ring shoulder 13' and the radial collar 42 of the butt 4.
This is the case when 2' rests on the radial boxwood 10 of the upper end face 129' of the sleeve 6. Furthermore, the sleeve 12' is additionally supported at the end face 129'v radial boxwood 10 when a certain elastic deformation length of the stud 4 is overcome, again the load on the snap joint is , is greatly reduced.

In the case of a ball joint, it is also possible to additionally increase the diameter of the radial flange 121'. Moreover, at that time,
When mounted on the walking aid flange 121', it will not become unstable even when walking on extremely slippery or hard ground or floors. This is because the inclination of the support pipe 2 of the walking aid is at most 16° to 18° with respect to a straight line extending perpendicularly on the ground even when walking fast. This angle of inclination is compensated immediately after the first contact of the outer circumference of the flange 121' with the propagation of supporting forces from the universal joint, e.g. Only force acts. When the supporting force is transmitted, on slippery ground or floors, the stone studs 4 transmit the supporting force in a planar manner. The flanges 121" or the plates, which are held at a predetermined distance vA in the case of planar contact with the stud 4, are made of extremely smooth and hard plastic, so that the cane does not, for example, lie on a parquet floor. It is possible to install reliably on smooth masonry even if it has to be mounted on a flange or dish. Due to the angle, large tilting moments are exerted on the periphery of the flange 121', which projects relatively widely outward in the radial direction, even with very low forces, so that in some cases, for example, elastic The ball joint restoring force generated by the shielding bellows 5 is overcome immediately (in other words, before the propagation of the supporting force) and the supporting foot is brought into contact with the ground or floor in a plane via the non-slip stud 4. This is because they are brought into contact with each other.

Of course, in order to ensure that the walking aid provided with the above-mentioned cap sleeve 12' can rest completely safely and reliably on extremely smooth ground or floors, even at relatively large angles of inclination, the flange 121' The lower side has a surface formation that allows you to measure the force of observation.

For example, a pattern 123' is formed there, which also has the function of stabilizing the supporting foot in the lateral direction when walking on extremely soft ground. For that purpose, the pattern 123' shown in FIGS. 7 and 9 includes a plurality of concentric ring webs 126' and a number of radially extending recesses 1.
It has 27'v.

To further improve the installation of the aid at an angle, the pattern 123' is provided with a friction coating 124'.
(See Figure 9). This coating can also be replaced by a coating that increases the degree of wear.

Alternatively, or in addition to these, the friction force increasing shoe 125'' can be arranged, for example, in a removable manner at the radial 7 flange 121'. See part.

Since the cap sleeve 12' is loaded with forces that are precisely defined in magnitude, direction, and controllable during the entire course of the walking movement, the amount M of the sleeve 12' can be relatively small. As a result, a person with a disability can walk long distances without getting tired using the support foot with multiple areas. To further reduce weight, the flange 121' is additionally provided with a hole 128.
'v You can leave it open. Soft ground due to this? The functionality of the walking aid is not impaired when walking. By forming the hole 128'v, the flange 12
1' loading conditions are favorable, resulting in flange 1
21'v need not necessarily be made as an integral part of the cap sleeve 12'. Rather, flange 12
1' could also be fitted in a correspondingly modified cap sleeve 12 in a different manner, so as not to fall off, of course.

Hole 128' in radial flange or support plate 121'
has additional support and stability on soft ground.

In the variation of the embodiment described above, radial direction 7
It is also possible that the flange 121' is not located exactly in the radial plane. It is only possible to change the geometry 2 without losing the advantages described above. Therefore, the flange 121' can also have a generally truncated conical shape.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a crutch with replaceable butts, FIG. 2 is a partial axial cross-sectional view of the support foot of the crutch, and FIG.
The cap sleeve and the support foot with the groin removed)
The figure shows the cap/sleeve shown in Fig. 2 as seen from the direction of arrow ■ in Fig. 2, and Fig. 5 shows the cap/sleeve shown in Fig. 4 as seen from the direction of arrow V in Fig. 4. 6 is a partial sectional view of the support taken along the line VT-VT in FIG. 3, and FIG. 7 is a plan view of another embodiment of the carrier, tube sleeve, viewed from the direction shown in FIG. 4. Figure 8 is a view of the cap sleeve in Figure 7 viewed from below (from the direction of the arrow ■).
Fig. 9 is an enlarged view of the section ``■'' in Fig. 7. 1...Crutch 2...Support pipe 3...Support foot 4...Spindle 5...'Elastic bellows 8...Frame edge 12...Cap/sleeve 14...Snap joint 15...Snap pin 17...Compression coil spring 26...Axial undercut/slit agent Asamura Kaoru procedure correction Letter (method) Date: August 1, 1925, Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Showa 2 Patent Application No. δ/z Fuki No. 3, Person making the amendment Relationship with the case: Special J1 applicant 4, Agent Person 5, Date of amendment order, 1980, month wt 1 day 6, Number of inventions increased by amendment ff: lje, and one copy each of its translations.

Claims (1)

[Claims] (1) Walking aids, such as crutches and other 9. In a replaceable butt holder, also of the type having a support foot with a frame edge on the bottom side, on which the butt is removably attached, the butt (4 ) is secured via a push-fit cap sleeve (12) to the slip-fit frame edge, this sleeve (12
) has a snap-type safety mechanism that can be removed from the outside (
14) A holder characterized in that it is fixed so that it cannot fall off through the holder. (2) The cap sleeve (12
) has a radial direction M (13) on the bottom side, and this M
2. A holder according to claim 1, characterized in that (13) fixes a stud (4) projecting from the sleeve (12) toward the bottom at the support foot (3). (3) In the case of a dish-shaped plastic spigot with a large bottom surface, the cap sleeve (12) is fixedly connected to the spigot that is directly supported on the support foot (10 to 8). A holder according to claim 1, characterized in that: (4) at least one snap-on safety mechanism (14) or at least one guided and received within the support foot (3, 6);
It has a book snap pin (15) and this pin (
15), the sleeve (
12), characterized in that the scales are inserted into snap-fit holes (26) of 12) and moved into a position of disengagement from the outside. Retainer. (5) The snap-on safety mechanism (14) includes two diametrically opposite positions guided within the support foot (6).
Book snap pins are provided, and these pins (1
5) is pre-tensioned radially outwardly into the locking position by a spring force, in which position the pin (15)
Each locking surface area (152) starts from the upper edge (25) of the cap sleeve (12) and projects positively into the axial undercut sling (26, 29), and , these bins (15) are movable from that position to an unlocking position in order to recess the locking surface area (152) into the support foot (6) and have a thickness of axial slings (26). ) width of the narrow part (30) (W
', ) and an unlocking surface area (15
4) or in the unlocked position, the slit (26
) The holder according to any one of claims 1 to 4, wherein the holder is located on the same line in the axial direction as the holder. (6) The snap bin (15) has a cylindrical guide area (15)
1), and these areas support the support foot (6).
5. A holder according to claim 5, characterized in that the holder is received in a single diametrical bore (16) of the holder and also supports each other via a helical compression spring (17). . (71) The snap pin (15) is pressed against the stop (19) by the coil spring (17) in the locking position, this stop forming a pin that projects into the diametrical hole (16). The holder according to any one of claims 5 or 6, characterized in that: (8) a locking surface area (152) and a locking surface area (152);
54) are each formed by a cylindrical surface, and these surfaces transition into each other via a cylindrical surface (153). The holder according to item 1 or 7. (9) The bottle head (155) with a fitting part is guided in the notch (27) of the cap sleeve (12) and covers the axial sling (2B)! A holder as described in any one of claims 5 to 8 in order. (10) The axial slit (26) extends from the upper edge (25) of the cap sleeve (12) to the narrowest point H'' (30).
In this narrow area, there is a chamfered part (31) in the shape of a rust surface.
According to (31), when pressing the sleeve (12),
The holder according to any one of claims 5 to 9, characterized in that the snap pin (15) can be pushed into the inward unlocked position. αD The cap sleeve (12) is of approximately hollow cylindrical construction and has an overlap (23) of material inside the area of the axial slit (26);
The thickness (S) of this overlapping portion (23) is the same as that of the bin head (
15'5) is selected to close approximately flush with the outer surface of the sleeve (12). Retainer as described. (I2) Attach the walking aid (1) via the universal joint (7).
) is connected to the support pipe (-2) of the support foot (
3, 6), the holder according to any one of claims 1 to 10. (!3) Claims 1 and 2, characterized in that the cap sleeve (12') has an outwardly projecting radial flange (121').
The holder according to any one of Items 4 to 12. (1 dominant radial direction) 1 flange (121') or transitions to the bottom end face (122') of the cap sleeve (12') so as to be approximately on the same plane;
17. The holder according to claim 16, characterized in that a protrusion (4) protrudes (■A) from the sleeve (12'). α□□□Radial flange (121') or cap
It forms an integral part of the sleeve (12'),
Claim 16 or 14.1J, characterized in that the cap sleeve (12') is supported on its upper side by scales on the support (6) of the support foot! The holder described in any one of the above. (I6) The radial flange (121') has an outer diameter of
A surface formation, for example a pattern (1
According to any one of claims 16 to 15, characterized in that it has an EP coating (124') and/or a friction shoe (125'). holder.