CN215229928U

CN215229928U - Multipurpose walking stick and walking stick pair

Info

Publication number: CN215229928U
Application number: CN202120363220.6U
Authority: CN
Inventors: 赵烈
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-09
Filing date: 2021-02-09
Publication date: 2021-12-21
Anticipated expiration: 2031-02-09

Abstract

The application discloses a multipurpose crutch and a crutch pair, wherein the crutch comprises a crutch main body; an elbow support portion including an elbow support body and a handle extending therefrom, a support surface of the elbow support body being on a same side of the handle, the elbow support body being at a location proximate one end with the support surface pivotally connected to an upper end of the crutch body away from the crutch body; and the supporting rod is connected with the elbow supporting main body at a position close to the other end in a pivoting way at one end, the other end is connected with the crutch main body in a pivoting way, the elbow supporting part can pivot around the upper end of the crutch main body and simultaneously drives the supporting rod to rotate, so that the elbow supporting part can continuously rotate in a rotating range between the maximum rotating angle position of the handle at the lower part and the maximum rotating angle position of the handle at the upper part. According to the walking stick and the walking stick, the walking stick can realize multiple purposes by a simple structure and is convenient to switch the use mode through the structural design that the elbow supporting part rotates relative to the walking stick main body.

Description

Multipurpose walking stick and walking stick pair

Technical Field

The present invention relates generally to a crutch, and more particularly, to a crutch that can be used as a crutch for multiple purposes. The utility model discloses still relate to and include the walking stick of multipurpose walking stick is right.

Background

Crutches are generally used for assisting a user in walking in various ways, such as elbow support, hand holding, underarm support and the like, and the elbow support further comprises an elbow horizontal support and an elbow vertical support so as to adapt to the auxiliary requirements of the user in different heights or different degrees. However, the existing walking stick can not meet various auxiliary requirements at the same time, and even if the existing walking stick which can meet two auxiliary requirements at the same time exists, the conversion process of different using modes of the walking stick is complex and inconvenient to use.

Therefore, a crutch with multiple purposes and convenient use mode conversion is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a multipurpose crutch which can conveniently change the use mode so as to at least relieve or solve the problems.

According to the utility model discloses an aspect provides a walking stick, include:

the crutch main body is a slender rod;

the elbow supporting part comprises an elbow supporting main body and a handle extending out of the elbow supporting main body, the supporting surface of the elbow supporting main body and the handle are arranged on the same side of the elbow supporting main body, the elbow supporting main body is arranged at a position close to one end, and the supporting surface is connected to the upper end of the crutch main body in a mode of deviating from the crutch main body in a pivoting mode; and

a support bar, one end of which is pivotally connected to the elbow support main body at a position close to the other end thereof, the other end of which is pivotally connected to the crutch main body,

the elbow supporting part can pivot around the upper end of the crutch main body and simultaneously drives the supporting rod to rotate, so that the elbow supporting part can continuously rotate in a rotating range between the maximum rotating angle position of the handle below and the maximum rotating angle position of the handle above.

Preferably, the walking stick further comprises a sliding assembly, the sliding assembly comprises a hollow cylindrical main body, the hollow cylindrical main body is sleeved on the walking stick main body, the other end of the supporting rod is connected to the walking stick main body through the sliding assembly, and the sliding assembly can slide up and down along the walking stick main body along with the movement of the supporting rod.

Preferably, the hollow cylindrical body of the sliding assembly comprises a cylindrical body wall having a through opening, and the sliding assembly further comprises a locking assembly for locking the through opening and releasing the locking.

Preferably, the hollow cylindrical body further comprises a protruding piece extending out of the wall of the cylindrical body along the through opening, the locking assembly comprises a locking buckle and a locking bolt pair, the locking buckle and the locking bolt pair are pivotally connected together, one end of a bolt of the locking bolt pair penetrates through a hole formed in the protruding piece and is held in place by a locking nut, the other end of the bolt is connected with the locking buckle, and the through opening is locked and the locking is released through the action of the locking buckle and the locking bolt pair.

Preferably, the lock is a handle having a cam-shaped protrusion at one end in contact with the cylindrical body wall, the opening is locked when the handle is rotated until the long-axis end of the cam-shaped protrusion abuts against the tab, and the locking is released when the long-axis end of the cam-shaped protrusion is disengaged from the tab.

Preferably, the part of the convex sheet, which is abutted to the long shaft end of the cam-shaped projection, is provided with a slope, so that when the lock catch is locked, the locking force is increased through the abutment of the long shaft end of the cam-shaped projection and the slope, and when the lock catch is released, the long shaft end of the cam-shaped projection is rotated to be disengaged from the slope, so that the lock catch is opened more smoothly.

Preferably, the sliding assembly is capable of locking at least the elbow support in a position with the elbow support handle down and the elbow support body parallel to the crutch body, a position with the elbow support handle up and the elbow support body parallel to the crutch body, and a position with the elbow support body perpendicular to the crutch body, respectively.

Preferably, be provided with the round hole along perpendicular to axis direction on the column main part wall of sliding assembly's hollow column main part, the round hole position of sliding assembly, the handle of elbow support portion set up the bullet knot in the round hole position of sliding assembly and the round hole position of sliding assembly when elbow support main part is perpendicular to the position of walking stick main part at last and elbow support main part when corresponding to elbow support portion handle under and elbow support main part and walking stick main part parallel position respectively in the walking stick main part for with the round hole cooperation strengthens the locking of sliding assembly.

Preferably, the handle is angled at about 90 degrees from a support plane of the elbow support body.

Preferably, the crutch further comprises a supporting leg assembly, the supporting leg assembly comprises at least two supporting legs connected to the lower end of the crutch main body, and the at least two supporting legs are relatively independent from each other and can adjust stress balance along with the unevenness of the ground so as to adapt to different road conditions.

Preferably, each supporting leg is connected with the lower end of the crutch main body through an independent tension spring and a fastener, and the fastener is in clearance fit with a hole in the supporting leg.

Preferably, the supporting legs are two, are connected to the lower extreme of walking stick main part through the sleeve pipe of cup jointing in walking stick main part's lower extreme outside, the cross section of the through-hole on the sleeve pipe is the slotted hole along walking stick axis direction, the axis of slotted hole perpendicular to walking stick main part runs through the sleeve pipe, two supporting legs are through passing the pin and the extension spring of slotted hole are connected to the both sides of sleeve pipe.

Preferably, the lower end of the crutch body is formed into a round head, and at least extends beyond the upper edge of the oblong hole.

Preferably, the crutch body is formed by a telescopic rod with adjustable length.

According to another aspect of the present invention, there is provided a pair of crutches, comprising a pair of the crutches described above.

According to the utility model discloses a walking stick and walking stick can realize a stick multipurpose, and the using-way conversion is convenient to the structural design who rotates for the walking stick main part through elbow supporting part with simple structure.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of a crutch in use with a horizontal elbow support according to an embodiment of the invention;

FIG. 2 is a schematic view of a crutch in use with an elbow upright support in accordance with an embodiment of the invention;

FIG. 3 is a schematic view of a crutch in a walking use configuration according to an embodiment of the present invention;

FIG. 4 is an angled perspective view of the elbow support portion of the crutch according to an embodiment of the invention;

FIG. 5 is a perspective view of another angle of the elbow support portion of the crutch according to an embodiment of the invention;

fig. 6 is a perspective view of a support rod of a crutch according to an embodiment of the invention;

FIG. 7 is a partially enlarged perspective view of the elbow supporting part, the supporting rod and the crutch body of the crutch according to an embodiment of the present invention;

FIG. 8 is a perspective view of a sliding assembly of a cane in a locked position in accordance with an embodiment of the present invention;

FIG. 9 is a perspective view of a sliding assembly of a cane in a release and locked position in accordance with an embodiment of the present invention;

FIG. 10 is a perspective view of the hollow cylindrical body of FIGS. 8 and 9;

FIG. 11 is a perspective view of the latch assembly of FIGS. 8 and 9;

fig. 12 is a perspective view of the locking bolt pair of the catch assembly of fig. 11;

FIG. 13 is an enlarged partial view of the support foot assembly of the crutch of FIGS. 1-3;

FIG. 14 is a perspective view of the support foot assembly of FIG. 13;

FIG. 15 is an angled perspective view of the foot assembly of FIG. 13 with one foot removed;

FIG. 16 is another perspective view of the foot assembly of FIG. 13 with one foot removed;

FIG. 17 is a perspective view of a support foot assembly of a crutch in accordance with an embodiment of the invention in one use configuration;

fig. 18 is a perspective view of another use of a support foot assembly for a cane according to an embodiment of the present invention.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

Fig. 1 to 3 are schematic views showing three use states of the crutch according to an embodiment of the present invention. Fig. 1 is a schematic view of a crutch in use with a horizontal elbow support according to an embodiment of the invention; FIG. 2 is a schematic view of a crutch in use with an elbow upright support in accordance with an embodiment of the invention; fig. 3 is a schematic view of a crutch in a walking use state according to an embodiment of the present invention. In the using state of fig. 1 and fig. 2, the crutches can be used singly or in pairs.

The structure of the crutch according to this embodiment of the invention will be described in detail below with reference to fig. 1 to 3. In fig. 1-3, the crutch is generally designated by reference numeral 1, and the crutch 1 includes a crutch body 12 that is an elongated rod, an elbow support 11, a support bar 13, a support leg assembly 14, and a slide assembly 15, the elbow support 11 being pivotally connected at a position near one end to an upper end of the crutch body 12 at the position shown in the drawing, the upper end of the support bar 13 being pivotally connected to a position near the other end of the elbow support 11, the other end of the support bar 13 being pivotally connected to the slide assembly 15, the slide assembly 15 being slidably connected to a middle position of the crutch body 12.

The elbow supporting portion 11 and the supporting rod 13 connected in this way enable the elbow supporting portion 11 to pivot around the upper end of the crutch main body 12, and meanwhile, drive the supporting rod 13 to rotate, so that the elbow supporting portion 11 can continuously rotate within a rotation range of the elbow supporting main body of the elbow supporting portion 11 and the crutch main body 12 (or the supporting rod 13 and the crutch main body 12) which are at the lower part of the handle and are abutted against the elbow supporting main body of the elbow supporting portion 11 and the crutch main body 12, and the maximum rotation angle position which is approximately parallel to the elbow supporting main body of the elbow supporting portion 11 and the crutch main body 12, and the supporting rod 13 drives the sliding assembly 15 to slide along the crutch main body 12 when rotating.

In the elbow supporting upright use state and the armrest use state shown in fig. 2 and 3, the elbow supporting main body does not necessarily have to be at the maximum rotation angle position substantially parallel to the crutch main body 12, but may be at any angle suitable for support within the rotation range of the upper elbow supporting portion 11.

As can also be seen from fig. 1 to 3, the crutch body 12 is formed by a telescopic rod of adjustable length, comprising a thick rod and a thin rod which are nested, and as can be further seen from fig. 2, the thick rod and the thin rod are fixed in position and adjusted in relative position with each other by means of snap fasteners.

Fig. 4 is a perspective view of an angle of the elbow supporting part of the walking stick according to an embodiment of the present invention, and fig. 5 is a perspective view of another angle of the elbow supporting part of the walking stick according to an embodiment of the present invention. Referring to fig. 4 and 5, the elbow supporting portion 11 includes an elbow supporting body 111, and a handle 112 extending from the elbow supporting body 111, the elbow supporting body 111 including a supporting surface 115, the handle 112 being on the same side as the supporting surface 115, the handle 112 being at an angle of about 90 degrees to the supporting surface 115. The elbow supporting body 111 includes a first through hole 113 and a second through hole 114 at opposite sides to the supporting surface 115, respectively, at positions near both ends, for pivotally connecting with the upper end of the crutch body 12 and the upper end of the support rod 13, respectively.

Fig. 6 is a perspective view of a supporting rod of a crutch according to an embodiment of the invention. The support bar 13 includes a first end (upper end) 131 and a second end (lower end) 132, the first end 131 may be pivotably connected to one of the first through hole 113 and the second through hole 114 of the elbow supporting body 111 by a pin, and the second end 132 may be pivotably connected to the sliding assembly 15 by a pin.

Fig. 7 is a partially enlarged perspective view of the elbow supporting part, the supporting rod and the crutch body of the crutch according to the embodiment of the invention. As is apparent from fig. 7, the elbow supporting portion 11 is pivotally connected to the upper end shown in the drawing of the crutch body 12 by a first through hole 113 and a pin passing therethrough, to the first end 131, i.e., the upper end shown in the drawing, of the support bar 13 by a second through hole 114 and a pin passing therethrough, and to the second end 132, i.e., the lower end shown in the drawing, of the support bar 13, to the slide assembly 15. The sliding assembly 15 is sleeved on the crutch body 12 and can slide up and down along the crutch body 12 when the elbow supporting part 11 pivots around the upper end of the crutch body 12 and drives the supporting rod 13 to rotate.

Also shown in fig. 7 is the handle 112 of the elbow support 11 down and the elbow support body 111 pivoted to a position substantially parallel against the crutch body 12, which coincides with the position of the elbow support 11 in the elbow upright support use condition shown in fig. 2. In this use state, the hand of the user is usually placed on the handle 112, and a downward force is applied to the handle 112 to assist in supporting the body of the user by the crutch. Since in this position, the elbow support main body 111 and the support rod 13 both abut against the crutch main body 12, and therefore this position is also the maximum position of the handle 112 rotating counterclockwise around the upper end of the crutch main body 12 in this embodiment, when a downward force is applied to the handle 112, the elbow support main body 111 further abuts against the crutch main body 12, and the support rod 13 also abuts against the crutch main body 12, forming a stable support position.

Similarly, when the handle 112 is rotated clockwise around the upper end of the crutch body 12 to a position where the handle of the elbow support 11 is up and the elbow support body 111 is substantially parallel to and against the crutch body 12, this position coincides with the position of the elbow support 11 in the hand-held use state shown in fig. 3. In this use state, the hand of the user is usually placed on the handle 112, and a downward force is applied to the handle 112 to assist in supporting the body of the user by the crutch. Since the elbow support main body 111 and the support rod 13 are both abutted against the crutch main body 12 in this position, this position is also the maximum position of the handle 112 rotating clockwise around the upper end of the crutch main body 12 in this embodiment, and when a downward force is applied to the handle 112, the elbow support main body 111 is further abutted against the crutch main body 12, and the support rod 13 is also abutted against the crutch main body 12, forming a stable support position.

It can be seen that the crutch according to this embodiment of the invention is in a self-stabilising supporting position in both the use conditions shown in figures 2 and 3, without locking, but to achieve the elbow horizontal support use condition shown in figure 1, or any angle of use condition suitable for support where the elbow support 11 is within the range of rotation, a locking device is required to lock the elbow support 11 in place.

The sliding and locking functions of the sliding assembly will be described in detail below with reference to fig. 8-12.

Fig. 8 is a perspective view of a sliding assembly of a cane in a locked position in accordance with an embodiment of the present invention. Fig. 9 is a perspective view of a sliding assembly of a cane in a release-locked position in accordance with an embodiment of the present invention. As shown in fig. 8 and 9, the slide assembly 15 includes a hollow cylindrical body 151 and a latch assembly 152, and a locking bolt pair of the latch assembly 152 is omitted for clarity of illustration. Therein, the hollow cylindrical body 151 includes a cylindrical body wall 1511 having a through opening, and a tab 1512 extending from the cylindrical body wall 1511 along the through opening. The lug 1512 is provided with a first through hole 1513 for connection to the second end 132 of the support rod 13, and a second through hole 1516 for a locking bolt pair. A circular aperture 1514 is provided in the cylindrical body wall 1511 perpendicular to the axial direction for receiving a snap on crutch body 12. Snaps are provided on cane body 12 for mating with circular aperture 1514 to enhance locking of slide assembly 15 at least at the location of circular aperture 1514 of slide assembly 15 corresponding to the position of handle 112 of elbow support 11 shown in FIG. 2 in a down, elbow support body 111 parallel position with cane body 12, at the location of circular aperture 1514 of slide assembly 15 corresponding to the position of handle 112 of elbow support 11 shown in FIG. 3 in an up, elbow support body 111 parallel position with cane body 12, and at the location of circular aperture 1514 of slide assembly 15 corresponding to the position of elbow support body 111 of elbow support 11 shown in FIG. 1 perpendicular position with cane body 12, respectively.

The latch assembly 152 includes a latch 1521 and an omitted locking bolt pair. The latch 1521 is in the locked position shown in fig. 8, and the latch 1521 is locked by engaging the locking bolt pair to move the tabs 1512 toward each other. The position of latch 1521 shown in fig. 9 is a release lock position, and latch 1521 releases the lock bolt pair, allowing tabs 1512 to return to a spaced apart relationship, releasing the lock. 21

As can also be seen in fig. 9, lock 1521 is a handle with a cam at one end that contacts tab 1512 of cylindrical body wall 1511, and upon rotation of the handle, the cam's long shaft end locks the through opening when it abuts tab 1512 and releases the lock when it is disengaged from the tab 1512.

FIG. 10 is a perspective view of the hollow cylindrical body of FIGS. 8 and 9; FIG. 11 is a perspective view of the latch assembly of FIGS. 8 and 9; fig. 12 is a perspective view of the locking bolt pair of the catch assembly of fig. 11.

As can be seen more clearly in fig. 10, the hollow cylindrical body 151 includes a cylindrical body wall 1511 having an opening therethrough, and a tab 1512 extending from the cylindrical body wall 1511 along the opening, the tab 1512 being provided with a first through hole 1513 for connection to the second end 132 of the support rod 13, and a second through hole 1516 for a locking bolt pair, the cylindrical body wall 1511 being further provided with a circular hole 1514 for receiving a snap on the crutch body 12.

As is also apparent from fig. 10 in conjunction with fig. 9, the cam-like projection of tab 1512 in contact with latch 1521 is provided with a ramp 1515 so that the long shaft end of the cam-like projection rotates into abutment with the ramp 1515 when latch 1521 is latched to increase the latching force and rotates out of abutment with the ramp 1515 when the latch is released to allow for smoother opening of latch 1521.

As can be seen in fig. 11, the latch assembly 152 includes a latch 1521 and a lock bolt pair 1523 connected thereto, the latch 1521 and the lock bolt pair 1523 being pivotally connected together by a pin passing through a through hole 1522 in the latch 1521, which pin is omitted for clarity.

As can be seen in fig. 12, the locking bolt pair 1523 comprises a bolt 1523a and a locking nut 1523b, and the end of the bolt 1523a opposite to the locking nut 1523b is provided with a through hole 1523c for connecting with the lock 1521 via a pin. One end of the bolt 1523a passes through a first through hole 1513 arranged on the lug 1512 and is then held in place by a locking nut 1523b, and the other end of the bolt 1523a is connected with a lock 1521, and the through opening of the hollow cylindrical main body 151 shown in fig. 11 is locked and released by the action of the lock 1521 and the locking bolt pair 1523.

A support foot assembly in accordance with an embodiment of the present invention will now be described with reference to fig. 13-18. The utility model discloses the supporting legs of this embodiment supporting legs subassembly can be independently along with the uneven adjustment atress degree of balance on ground, more adapts to complicated road surface environment, supports more stably.

Fig. 13 is an enlarged partial view of the support foot assembly of the cane of fig. 1-3. As can be seen in the figures, the support foot assembly 14 comprises two support feet 141, each support foot 141 comprising a support foot main body 1411, a perforation 1412 provided in the middle of the support foot main body 1411 and a foot 1413 provided at the bottom of the support foot main body 1411, and each support foot 141 being connected to the lower end of the crutch main body 12 by a tension spring 143 connected to the top thereof and a pin passing through the perforation 1412.

FIG. 14 is a perspective view of the support foot of the foot assembly of FIG. 13, showing support foot 141 alone. The utility model discloses supporting legs 141's supporting legs main part 1411 is roughly triangle-shaped shape, and perforation 1412 is located the central point of supporting legs main part 1411's triangle-shaped shape and puts, and two footing 1413 are located the apex of the base of supporting legs main part 1411's roughly triangle-shaped shape, and footing 1413 is made by elastic material. The supporting foot main body 1411 is further provided at an upper vertex thereof with a connecting portion 1414 for connecting with the tension spring 143, and the connecting portion 1414 includes a groove for receiving an end portion of the tension spring 143 and a through hole for fastening the end portion of the tension spring 143.

FIG. 15 is an angled perspective view of the foot assembly of FIG. 13 with one foot removed; FIG. 16 is an isometric view of the foot assembly of FIG. 13 with one foot removed and another angle. Referring to fig. 15 and 16, the connection structure of the support leg 141 to the lower end of the crutch body 12 is shown in detail. Specifically, the supporting foot assembly 14 further includes a sleeve 142, the inner diameter of which is slightly larger than the outer diameter of the rod of the crutch body 12, and the sleeve 142 is sleeved on the lower end of the crutch body 12, an oblong hole 1421 penetrating through the sleeve 142 in the direction perpendicular to the axis is formed near the lower end of the sleeve 142, and the pin 144 passes through the oblong hole 1421 and the through holes 1412 on the two supporting feet 141, respectively, thereby connecting each supporting foot 141 to the lower end of the crutch body 12 together with the tension spring 143. The lower end 121 of the crutch main body 12 is formed into a round head and at least extends beyond the upper edge of the long round hole 1421, so that the pin 144 can move up and down irregularly in the long round hole 1421 under the combined action of the lower end 121 of the crutch main body 12, the tension spring 143 and the through hole 1412 on the supporting leg 141, the balance of stress is adjusted along with unevenness of the ground, and stable supporting stress is formed by the tension spring 143, the supporting leg 141 and the lower end 121 of the crutch main body 12, so that the crutch main body 12 can be more suitable for complex pavement environment and can be more stably supported.

According to the utility model discloses the supporting legs subassembly 14 of this embodiment still has another advantage, and the extension spring 143 of connecting supporting legs 141 can form different angles with walking stick main part 12, lets walking stick main part 12 can both realize steady support at different angles, and is safer, more accords with human engineering. This structure will be described below with reference to fig. 17 and 18.

FIG. 17 is a perspective view of a support foot assembly of a crutch in accordance with an embodiment of the invention in one use configuration; fig. 18 is a perspective view of another use of a support foot assembly for a cane according to an embodiment of the present invention. As can be seen from fig. 17 in combination with fig. 13 to 16, since the support leg 141 of the support leg assembly 14 is connected to the crutch body 12 only by the pin 144 penetrating the through hole 1412 of the support leg 141 and the tension spring 143, the crutch body 12 can pivot with the pin 144 as a pivot point, thereby forming a use state shown in fig. 17 in which the axis of the crutch body 12 is not parallel to the axis of the tension spring 143. As can be seen in fig. 18 in conjunction with fig. 13-16, the axis of cane body 12 may also be parallel to the axis of extension spring 143. Also shown in fig. 18 are a coupling hole 123 for coupling the upper end of the crutch body 12 to the elbow support 11 shown in fig. 1-3, and a snap 122 for coupling the thick and thin rods of the crutch body 12.

The preferred embodiment of the crutch according to the invention is described above with reference to the drawings, on the basis of which many variations are possible.

The first modification is as follows:

the sliding assembly of the crutch of the present invention may not include a latch assembly, that is, the sliding assembly only has a sliding function, so that the elbow supporting part of the crutch can still remain in the elbow upright supporting use state and the hand use state shown in fig. 2 and 3, because as before, the elbow supporting part is a self-stabilizing support position in these two positions. Such a crutch is also within the protection scope of the present invention.

Modification two:

in the above preferred embodiment of the present invention, the lower end of the supporting rod is slidably connected to the crutch body via the sliding assembly, and in the second variant, the lower end of the supporting rod is pivotally and fixedly connected to the crutch body, and the elbow supporting portion is connected to the crutch body via a sliding rod slidable relative to the crutch body, and the sliding rod can extend and contract relative to the crutch body, so as to ensure that the elbow supporting portion rotates to the positions shown in fig. 2 and 3, i.e. the elbow upright supporting position and the armrest using position, during the rotation process of the supporting rod driven by the elbow supporting portion.

Modification three:

in the above preferred embodiment of the present invention, the locking component of the sliding component is a pair of a handle and a locking bolt, which may be in other forms, for example, the handle is another locking nut. The latch assembly may also be other forms of assembly for tensioning or compressing the tab, and any form of assembly that achieves and releases tensioning or compression of the tab is suitable.

In addition, in the above preferred embodiment of the present invention, the inclined surface 1515 engaged with the end portion of the handle having the cam-shaped protrusion as shown in fig. 10 is a preferred structure and is not essential. Also, the round hole 1514 shown in fig. 8 and 10 for receiving a snap on crutch body 12 may be provided on the opposite side of the cylindrical body wall 1511 of the slide assembly 15, and thus may be covered by the catch 1521.

Modification four:

the crutch of the present invention may not include the support foot assembly 14 of fig. 13-18.

In the support foot assembly 14 shown in fig. 13 to 18, the support foot main body 1411 of the support foot 141 does not have to be triangular as shown in the drawings, and may be rectangular, trapezoidal, or the like. The number of the support legs 141 is not limited to two, and the pin 144 shown in fig. 15 is not limited to one, and may be plural. In the case that the pin 144 is multiple, the axis of the crutch body 12 and the axis of the tension spring 143 may not be angled, but each support leg 141 can adjust the balance of the stress independently of each other according to the unevenness of the ground, so as to adapt to the complex road environment and provide more stable support.

The oblong opening 1421 shown in fig. 15 and 16 is also not limited to this shape and may be an oblong opening or a large circular opening that forms a clearance fit with the pin 144 or an opening of another shape.

Modification five:

the utility model discloses a walking stick main part 12 is not necessarily cylindric pole, can be the pole that has other cross sectional shape, and the main part of sliding assembly 15 also need not be the cavity cylindric main part from this, can be the cavity column main part that corresponds with walking stick main part 12's cross sectional shape.

Modification six:

the elbow supporting part 11, the crutch main body 12 and the support rod 13 of the crutch 1 of the present invention are not necessarily arranged in the same plane as shown in fig. 1 to 3, but may be arranged in the same plane as the crutch main body 12 and the support rod 13, the elbow supporting part 11 is arranged on one side of the crutch main body 12 and the support rod 13, or the elbow supporting part 11 and the support rod 13 are arranged in the same plane, and the crutch main body 12 is arranged on one side of the elbow supporting part 11 and the support rod 13.

In addition, the shapes of the elbow supporting portion 11 and the supporting bar 13 are not limited to those shown in the drawings, and the angle between the handle 112 of the elbow supporting portion 11 and the supporting surface 115 is not limited to about 90 degrees, and may be any angle suitable for support.

The individual features described in the embodiments or variants herein may be omitted or combined with one another depending on the actual application.

Directional terminology herein, such as "upper end," "lower end," "clockwise," "counterclockwise," etc., is used for convenience of description only and is described with respect to the conventional use orientation of crutches and the orientation shown in the drawings and is not limiting of the crutch structure or use.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A multi-purpose crutch, comprising:

the crutch main body is a slender rod;

2. The multipurpose crutch of claim 1 further comprising a sliding assembly, wherein the sliding assembly comprises a hollow cylindrical main body, the hollow cylindrical main body is sleeved on the crutch main body, the other end of the support rod is connected to the crutch main body via the sliding assembly, and the sliding assembly can slide up and down along the crutch main body along with the movement of the support rod.

3. The multipurpose crutch of claim 2 wherein the hollow cylindrical body of the slide assembly comprises a cylindrical body wall having a through opening, and the slide assembly further comprises a locking assembly for locking the through opening and releasing the locking.

4. The multipurpose crutch of claim 3 wherein the hollow columnar body further comprises a tab extending from the wall of the columnar body along the through opening, the latch assembly comprises a latch and a locking bolt pair pivotally connected together, one end of a bolt of the locking bolt pair passes through a hole provided in the tab and is held in place by a locking nut, and the other end of the bolt is connected to the latch to lock the through opening and release the lock by the action of the latch and locking bolt pair.

5. The multipurpose crutch of claim 4 wherein the catch is a handle having a cam-like projection at one end that contacts the columnar body wall, the opening being locked when the handle is rotated to a position where the long axis end of the cam-like projection abuts the tab, the lock being released when the long axis end of the cam-like projection disengages from the abutment with the tab.

6. The multipurpose crutch of claim 5 wherein the abutment of the tab with the long axis end of the cam-like projection is provided with a ramp, such that when the lock catch is locked, the locking force is increased by the abutment of the long axis end of the cam-like projection with the ramp, and when the lock catch is released, the long axis end of the cam-like projection is rotated out of abutment with the ramp, such that the lock catch is opened more smoothly.

7. The multipurpose crutch of any one of claims 3 to 6 wherein the slide assembly is capable of locking at least the elbow support in a position with the elbow support handle down and the elbow support body parallel to the crutch body, a position with the elbow support handle up and the elbow support body parallel to the crutch body, and a position with the elbow support body perpendicular to the crutch body, respectively.

8. The multipurpose crutch of any one of claims 2 to 6 wherein the cylindrical main body wall of the hollow cylindrical main body of the sliding assembly is provided with a circular hole along the direction perpendicular to the axis, and at least the main body of the crutch is provided with a snap corresponding to the position of the circular hole of the sliding assembly when the elbow support handle is down and the elbow support main body is parallel to the main body of the crutch, the position of the circular hole of the sliding assembly when the elbow support handle is up and the elbow support main body is parallel to the main body of the crutch, and the position of the circular hole of the sliding assembly when the elbow support main body is perpendicular to the main body of the crutch, respectively, for cooperating with the circular hole to enhance the locking of the sliding assembly.

9. The multi-purpose crutch of any of claims 1 to 6 wherein said handle is angled at about 90 degrees from a support plane of said elbow support body.

10. The multipurpose crutch of any of claims 1 to 6 further comprising a support foot assembly comprising at least two support feet attached to the lower end of said crutch body, said at least two support feet being relatively independent of each other and capable of adjusting the force balance with the unevenness of the ground to accommodate different road conditions.

11. The multipurpose crutch of claim 10 wherein each support foot is connected to the lower end of the crutch body by a separate tension spring and fastener, the fastener being a clearance fit with the hole in the support foot.

12. The multipurpose crutch of claim 11 wherein the two support legs are connected to the lower end of the crutch body by a sleeve sleeved outside the lower end of the crutch body, the cross section of the through hole on the sleeve is an oblong hole along the crutch axis, the oblong hole runs through the sleeve perpendicular to the crutch axis, and the two support legs are connected to both sides of the sleeve by a pin and a tension spring passing through the oblong hole.

13. The multipurpose crutch of claim 12 wherein the lower end of the crutch body is formed with a rounded head that extends at least beyond the upper edge of the oblong hole.

14. The multipurpose crutch of any of claims 1 to 6 wherein the crutch body is comprised of a telescoping rod of adjustable length.

15. A pair of crutches comprising a pair of multi-purpose crutches according to any one of claims 1-14.