JP3199705U - Stretch adjustment structure of cane - Google Patents

Abstract

An object of the present invention is to provide an expansion / contraction adjustment structure for a cane that can be easily and easily adjusted in length. A cane expansion / contraction adjustment structure including an outer tube, an inner tube, an interlocking rod, and a push member. The structure allows the interlocking rod to be moved by the elasticity of a spring. The lengths of the outer tube 20 and the inner tube 10 are fixed by always pulling the expansion portion 50 and the push member 40 and expanding the elastic socket 54 to contact the female screw 23 of the outer tube 20. The user extends the inner tube 10 and the outer tube 20 to the outside by direct force, the inner tube 10 moves directly away from the expansion portion 50 by interlocking with the push member 40, and the elastic socket 54 hits the female screw 23 of the outer tube 20. The outer tube 20 and the inner tube 10 can be smoothly extended. Further, when the user wants to shorten the length of the cane, the user operates the control member 60 to interlock the expansion piece 53 of the expansion portion 50 and separate it from the conical surface 41 of the push member 40, thereby A pressureless state of the inner tube 10 is formed, the length can be adjusted easily and easily, and convenience is enhanced. [Selection] Figure 2

Description

  The present invention relates to a structure of a cane, and particularly to a structure for adjusting the expansion and contraction of a cane that can be easily and easily adjusted in length.

  As shown in FIGS. 10 and 11, the cane has a main shaft and a support shaft, and a telescopic positioning structure is provided at a portion where the main shaft and the support shaft overlap. The telescopic positioning structure includes a sleeve and an expansion operation unit, and the sleeve is inserted into a support shaft to be in a close contact state. A male screw portion is formed on the surface of the sleeve, and the other end of the expansion operation portion is cylindrical and screwed to the male screw portion of the sleeve. Further, an elastic claw portion is provided at the bottom of the expansion operation portion, and the sleeve is inserted into the conical base. The sleeve is provided with a support for supporting the bottom of the conical base. Further, since the conical base is in a state of being in contact with the elastic claw portion of the expansion operation portion at an angle, the elastic claw portion of the expansion operation portion is opened outwardly so that it firmly contacts the inner wall of the main shaft and reaches a fixed position state. . When the user wants to adjust the length of the cane, the user rotates the support shaft so that the sleeve and the conical base rotate together, and the male screw portion of the sleeve and the male screw tightening of the expansion operation portion move in position. The purpose of adjusting the length can be achieved since the tightening and loosening changes of the extension actuating part and the conical base can be controlled. However, it is easy to notice that there are still insufficient parts in the above-mentioned conventional structure.

  The main causes are as follows. (1) Since the cane is screwed on the male threaded portion of the sleeve and the conical base can expand the expansion operation portion, the elastic claw portion of the expansion operation portion is firmly applied to the inner wall of the main shaft. If it is desired to increase the stress intensity, the sleeve needs to be pressed with a stronger force against the expansion operation part, and it is obvious that the operation is a serious situation because the rotational resistance to be screwed is too large. In addition, when the force is applied to the main shaft, the expansion operation part is brought into close contact with the male screw of the sleeve, so that the expansion operation part and the sleeve are liable to be fixed, and it is difficult for the user to turn the support shaft, and the operation is very difficult. Exists.

  (2) The length of the male threaded portion and the expansion operating portion of the sleeve must be adjusted in a rotating manner. Further, since the outer surface of the support shaft is smooth, it is difficult for the user to grip when turning the support shaft. The speed of adjusting the length of the support shaft by the rotation method is slow, and the length of the cane cannot be changed promptly according to the situation, which causes inconvenience in use operation.

(3) Since the expansion operation portion hits the smooth inner wall of the main shaft by the plastic elastic claw portion, the friction resistance force between the elastic claw portion and the inner wall of the main shaft is relatively small, and the stress intensity between the expansion operation portion and the main shaft is The shortage tends to cause a slip-through situation and creates a danger when assisting walking.
In light of the above, the inventor has carefully designed and carefully evaluated the product based on the experience of manufacturing and developing related products for many years.

The present invention solves the above-mentioned drawbacks existing in the current technology and provides a cane expansion / contraction adjustment structure.

  The present invention provides a structure for adjusting the expansion and contraction of a cane. A grip is connected to one end of the inner tube, a protrusion is formed on the outer edge of the other end of the inner tube, and a control member is installed near the grip. The grip is provided with a through hole, and a hat portion is formed at one end of the control member, and is inserted into the through hole from the opposite end. An anti-slip pad is provided at one end of the outer tube, a stopper is fixed to the other end of the outer tube, a support is provided at the inner edge of the stopper, and the stopper is attached to the inner tube from the outer tube. The support part hits the protrusion of the inner tube and cannot be removed. Further, a female screw is formed on the inner surface of the outer tube, one end of the interlocking rod is connected to the control member, and the control member and the interlocking rod are fixed by screws, so that the control member can be moved by pressing the control member. A threaded portion is formed by penetrating the other end of the interlocking rod into the outer tube, and a support pad is provided at an intermediate portion of the interlocking rod. A conical surface is formed at one end of the push member, and a connecting portion is provided at the other end of the push member, and the connecting portion is fixed to an opening at one end where the protruding portion of the inner tube is located. The connecting portion of the push member is provided with a plurality of axial grooves, and the push member hits the inner tube by the connecting portion and increases the amount of pressing deformation of the connecting portion by the axial recessed groove. An intermediate portion of the push member has a ring portion protruding to the surface, and the push member is stably fixed to one end of the inner tube by utilizing the fact that the ring portion hits the tube opening of the inner tube. The push member is provided with a hole so that the threaded portion of the interlocking rod can penetrate the hole. A spring is provided between the push member and the support pad. The extension portion is provided with a shaft hole, and the extension portion is attached to one end of the threaded portion of the interlocking rod through the shaft hole, and the position of the extension portion and the push member is limited by screwing the nut to the screw portion. . The extension portion extends in the direction of the push member to form a plurality of extension pieces surrounding the interlocking rod, and a resilient socket is attached to the outer edge of the end of the extension piece. Further, the extended portion is formed with a first ring piece and a second ring piece at all locations of the extended piece, and the position of the elastic socket is limited by the first ring piece and the second ring piece.

  Among them, the inner tube is provided with a groove at one end close to the grip, the control member includes a plug, a socket, and a handle, and the plug and the interlocking rod are fixed by screws. The handle is pivoted to the socket by a sheath. Further, by attaching the socket to the position of the groove of the inner tube, one end of the handle is inserted into the groove and hits the stopper, so that the handle is a lever type and the interlocking rod can be moved.

  The first object of the present invention is that the wand is always pulled by the extension of the extension part and the push member due to the elasticity of the spring, and the elastic socket is expanded to come into contact with the female thread of the outer pipe. The length of the tube is fixed. When the user wants to lengthen the cane, the user directly applies force to extend the inner tube and the outer tube to the outside, the inner tube directly moves the push member away from the expansion part, and the elastic socket is The outer tube and the inner tube can be smoothly extended without hitting the female screw of the tube. In addition, when the user wants to shorten the length of the cane, the user operates the control member to move the extension piece of the extension part away from the conical surface of the push member, so that a non-pressure state of the outer tube and the inner tube is formed. Convenience is enhanced by adjusting the length easily and easily.

  Another object of the present invention is to press the push member and the support pad of the interlocking rod by the elasticity of the spring, so that the extension portion presses the conical surface of the push member with the extension piece. Further, the expansion piece is expanded outward by the conical surface, and the elastic socket is brought into contact with the female screw of the outer tube. When the user assists walking with a cane, the inner tube interlocks the push member and presses it against the extension, and the push member pushes and opens the extension piece of the extension. That is, when more force is applied to the grip, the degree of adhesion between the elastic socket and the female screw increases, and the frictional resistance between the female screw and the elastic socket depends on the rough pattern of the female screw and the elasticity of the main body of the elastic socket. Effectively increases the bond strength between the outer tube and the inner tube, thereby enhancing the auxiliary safety.

  Another object of the present invention is that the wand is always pulled by the elasticity of the spring and the interlocking rod pulls the extension part and the push member, and the elastic socket is expanded to come into contact with the female thread of the outer pipe. The length of is fixed. Since the conical surface of the push member is separated from the expansion piece in the axial direction, the user can easily operate the control member according to the contraction elasticity of the expansion piece and the elastic socket itself. Convenience is enhanced by making adjustments.

FIG. 1 is a three-dimensional view showing the expansion / contraction adjustment structure of the cane of the present invention. FIG. 2 is a three-dimensional exploded view showing the expansion / contraction adjustment structure of the cane according to the present invention. FIG. 3 is a cross-sectional view illustrating the expansion / contraction adjustment structure of the cane according to the present invention. FIG. 4 is a local enlarged view of FIG. 3 in the expansion / contraction adjustment structure of the cane according to the present invention. FIG. 5 is a view showing an operation of extending the expansion / contraction adjusting structure of the cane according to the present invention. FIG. 6 is a diagram illustrating an operation in which the expansion / contraction adjustment structure of the cane according to the present invention is contracted. FIG. 7 is a local enlarged view of FIG. 6 in the expansion / contraction adjustment structure of the cane of the present invention. FIG. 8 is an external three-dimensional view of another embodiment of the expansion / contraction adjustment structure of the cane of the present invention. FIG. 9 is a cross-sectional view of another embodiment of the expansion / contraction adjustment structure of the cane of the present invention. FIG. 10 is a three-dimensional exploded view of a conventional cane expansion / contraction adjustment structure. FIG. 11 is a cross-sectional view of a conventional cane expansion / contraction adjustment structure.

  First, as shown in FIG.1 and FIG.2, the expansion-contraction adjustment structure of a cane has an inner tube (10), an outer tube (20), an interlocking rod (30), a push member (40), an extension part ( 50). A grip (11) is connected to one end of the inner tube (10), a protrusion (12) is formed on the outer edge of the other end of the inner tube (10), and a control member is provided near the grip (11). (60) is installed. The grip (11) is provided with a through hole (111), and a hat portion (601) is formed at one end of the control member (60), and is inserted into the through hole (111) from the opposite end. A non-slip pad (21) is provided at one end of the outer tube (20), a stopper (22) is fixed to the other end of the outer tube (20), and a support ( 221) is provided, and the outer tube (20) is inserted into the inner tube (10), so that the support portion (221) of the stopper (22) hits the protrusion (12) of the inner tube (10) and cannot be removed. An internal thread (23) is formed on the inner surface of the outer tube (20). One end of the interlocking rod (30) is connected to the control member (60), and the control member (60) and the interlocking rod (30) are fixed with screws. ) Can be moved. The other end of the interlocking rod (30) is passed through the outer tube (20) to form a threaded portion (31), and a support pad (32) is provided at the intermediate portion of the interlocking rod (30). A conical surface (41) is formed at one end of the push member (40), and a connecting portion (42) is provided at the other end of the push member (40), and the inner tube (10) is connected by the connecting portion (42). The protrusion (12) is fixed to an opening at one end. The connecting portion (42) of the push member (40) is provided with a plurality of axial grooves (421), the push member (40) hits the inner tube (10) by the connecting portion (42), and The amount of pressing deformation of the connecting portion (42) is increased by the axial concave groove (421). The push member (40) has a ring portion (43) projecting to the surface at an intermediate portion of the push member (40), and the push member (40) is utilized by the fact that the ring portion (43) hits the tube opening of the inner tube (10). Is stably fixed to one end of the inner tube (10). The push member (40) is provided with a hole (44) so that the threaded portion (31) of the interlocking rod (30) can penetrate the hole (44). A spring (45) is provided between the push member (40) and the support pad (32). The extension portion (50) is provided with a shaft hole (51), and the extension portion (50) is attached to one end where the screw portion (31) of the interlocking rod (30) is provided by the shaft hole (51). The extension part (50) and the push part (40) are limited in position by screwing 52) to the screw part (31). The extension portion (50) extends in the direction of the push portion (40) to form a plurality of extension pieces (53) surrounding the interlocking rod (30), and the outer edge of the end of the extension piece (53) is elastic on the outer edge. A socket (54) is attached. The extended portion (50) includes a first ring piece (531) and a second ring piece (532) formed at all locations of the extended piece (53), and the first ring piece (531) and the second ring piece ( 532) limits the position of the resilient socket (54). The elastic socket (54) has the female thread (23) of the outer tube (20) by utilizing the fact that the conical surface (41) of the push member (40) and the extension piece (53) are pressed against each other by the above-described structure. To fix the length of the outer tube (20) and the inner tube (10).

  2 and 3 show the assembly of the cane telescopic adjustment structure. The control member (60) is inserted into the through hole (111) of the grip (11), and the opposite end where the threaded portion (31) of the interlocking rod (30) is coupled to the control member (60), and the stopper (22 ) Is fitted into the inner pipe (10), and the end of the inner pipe (10) on which the stopper (22) is fitted is screwed to the grip (11). ) Can penetrate the inner tube (10). The spring (45) is attached to the interlocking rod (30), and the push member (40) is attached to the interlocking rod (30) by the hole (44), so that the spring (45) is supported by the support pad (32) and the push member (40). ) And is pressed against and fixed to the opening of the inner tube (10) by the connecting portion (42) of the push member (40). The expansion portion (50) is provided with a resilient socket (54) between the first ring piece (531) and the second ring piece (532), and the expansion piece (53) is directed toward the push member (40). Thus, the shaft hole (51) of the extension part (50) is attached to the screw part (31) of the interlocking rod (30). Further, the nut (52) is screwed to the screw portion (31), whereby the spring (45), the push member (40) and the extension portion (50) are supported between the support pad (32) and the screw portion (31). The position of the inner tube (10) is finally limited, and the inner tube (10) is inserted into the opening at the opposite end where the non-slip pad (21) of the outer tube (20) is located and fixed. The extended portion (50) is accommodated in the position of the female screw (23) of the outer tube (20), and is fixed to the opening of the outer tube (20) by the stopper (22), whereby the protruding portion of the inner tube (10). (12) remains on the support portion (221) of the stopper (22), and the assembly is completed.

  1 to 4 show actual usage conditions. The cane is expanded by pressing the push pad (40) and the support pad (32) of the interlocking rod (30) by the elasticity of the spring (45), and the interlocking rod (30) is always pulled in the direction of the grip (11). The extension piece (53) of the part (50) presses against the conical surface (41) of the push member (40). Further, the expansion piece (53) is expanded outward by the conical surface (41), and the resilient socket (54) contacts the female screw (23) of the outer tube (20). When the user assists walking with the cane, the user moves the center of gravity of the body to the grip (11) of the cane, so that the grip (11) transmits gravity to the inner tube (10). Since the elastic socket (54) of the extension (50) hits the female screw (23) of the outer tube (20), the conical surface (41) of the push member (40) is lowered by the force on the inner tube (10) side. The push member (40) further pushes open the expansion piece (53) of the expansion portion (50). That is, when more force is applied to the grip (11), the degree of adhesion between the elastic socket (54) and the female screw (23) increases, and the rough pattern of the female screw (23) and the main body of the elastic socket (54). Due to the elasticity, the frictional resistance between the female screw (23) and the elastic socket (54) is effectively increased, and the travel assist function of the cane is achieved, and the auxiliary safety is enhanced.

  When the user wants to lengthen the cane, as shown in FIGS. 1 to 5, the user holds the grip (11) or the inner tube (10) with one hand and the outer tube (20) or the other hand with the other hand. By simply grasping the non-slip pad (21), the inner tube (10) and the outer tube (20) can be extended to the outside by applying a direct force, and the cane can be lengthened without the need for extra rotation or pushing. Can achieve the purpose. More specifically, when the inner tube (10) and the outer tube (20) are extended, the inner tube (10) is directly connected to the push member (40) and separated from the expansion portion (50). In the extended portion (50), the push member (40) and the extended portion (50) are separated from each other by the frictional resistance of the female screw (23) of the outer tube (20). Further, since the conical surface (41) of the push member (40) does not press the expansion piece (53), the resilient socket (54) does not hit the female screw (23) of the outer tube (20), and the outer tube can be smoothly smoothed. (20) The inner tube (10) can be extended. Regardless of the length to be adjusted, when the hand is released, the spring (45) pushes and moves the support pad (32) of the interlocking rod (30), and the extension part (50) is pushed again. Since the member (40) can be pressed, the lengths of the inner tube (10) and the outer tube (20) are fixed. The support that the user supports when going down the stairs can be easily and easily extended and the length can be adjusted steplessly, so that the user can adjust the length to the appropriate length according to the height and the stairs. Get higher. Also, when the user wants to shorten the length of the cane, as shown in FIGS. 6 and 7, the user presses the hat portion (601) of the control member (60) while holding the grip (11) with one hand, While pressing the outer tube (20), apply a force toward the grip (11) and press it. At this time, the control member (60) can move the interlocking rod (30) to move to the non-slip pad (21) side, and the conical surface (41) of the push member (40) and the extension portion (50) can be moved. The expansion piece (53) is separated, the elastic socket (54) and the female screw (23) are left in a non-contact state, and the inner tube (10) and the outer tube (20) are in a non-pressure state, so the wand is shortened. The objective can be achieved. Further, since the conical surface (41) of the push member (40) is axially separated from the expansion piece (53), the user can adjust the contraction elasticity of the expansion piece (53) and the elastic socket (54) itself. The control member (60) can be easily operated, and the length can be reduced easily and easily. The cane is suitable for climbing the stairs after being shortened, and the user can quickly adjust to the appropriate length according to the length of the arms and the height of the stairs. Alternatively, if the user wants to stand up from a sitting state, the user can assist with standing up with a short cane. As described above, the cane of the present invention has a function of adjusting the expansion and contraction easily and easily, so that the user can easily and quickly adjust it to an appropriate length. Suitable and convenient to use.

  8 and 9 show another embodiment of the present invention. The inner pipe (10) is provided with a groove (13) at one end close to the grip (11), and the control member (60) includes a plug (61), a socket (62), and a handle (63). 61) and the interlocking rod (30) are fixed by screws. The handle (63) is pivoted to the socket (62) by a sheath (64). Further, by attaching the socket (62) to the position of the groove (13) of the inner tube (10), one end of the handle (63) is inserted into the groove (13) and applied to the stopper (61). When the user wants to shorten the cane, the user pulls the handle (63) with one hand, the handle (63) axially vibrates the sheath (64) of the socket (62), and the other end of the handle (63) is plugged ( 61), the stopper (61) can be moved simultaneously with the interlocking rod (30), the handle (63) is a lever type, and the interlocking rod (30) can be moved, and the expansion / contraction adjustment function of the cane can be operated easily and easily.

  The above is only a part of the preferred embodiments of the present invention, and the scope of the present invention is not limited. That is, changes, modifications, and the like made within the scope of the utility model registration request should also fall within the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Inner pipe 11 Grip 111 Through-hole 12 Protrusion part 13 Groove 20 Outer pipe 21 Non-slip pad 22 Stopper 221 Support part 23 Female screw 30 Interlocking rod 31 Screw part 32 Support pad 40 Push member 41 Conical surface 42 Connection part 421 Axial direction Groove 43 Ring portion 44 Hole 45 Spring 50 Extension portion 51 Shaft hole 52 Nut 53 Extension piece 531 First ring piece 532 Second ring piece 54 Resilient socket 60 Control member 601 Hat portion 61 Plug 62 Socket 63 Handle 64 Sheath 70 Cane 71 Main shaft 72 Support shaft 80 Telescopic positioning structure 81 Sleeve 811 Male thread portion 812 Support portion 82 Extended operation portion 821 Elastic claw portion 90 Conical base

Claims (6)

An expansion / contraction adjustment structure for a cane including an inner tube, an outer tube, an interlocking rod, a push member, and an expansion part,
A grip is connected to one end of the inner tube, a protrusion is formed on the outer edge of the other end, and a control member is installed near the grip.
The outer tube has a non-slip pad attached to one end, a stopper is fixed to the other end, a support portion is provided on the inner edge of the stopper, and the outer tube is inserted into the inner tube, thereby supporting the stopper. Will not come off when it hits the protrusion of the inner tube, and an internal thread is formed on the inner surface of the outer tube,
The interlocking rod has one end connected to the control member, the other end penetrating to the outer tube and a threaded portion, and a support pad is provided at the intermediate portion of the interlocking rod
The push member has a conical surface formed at one end, and a connecting portion is provided at the other end. The connecting portion is fixed to an opening at one end where the protruding portion of the inner tube is located, and the push member is provided with a hole. The threaded portion of the interlocking rod passes through the hole, and a spring is provided between the push member and the support pad,
The extension part is provided with a shaft hole, and is attached to one end of the threaded part of the interlocking rod by the shaft hole, and the extension part and the push member are limited in position by fixing the nut to the screw part. The part extends in the direction of the push member to form a plurality of extension pieces surrounding the interlocking rod, and a resilient socket is attached to the outer edge of the end of the extension piece, so that the conical surface of the push member and the extension piece press against each other This makes it possible to adjust the length of the outer tube and the inner tube so that the elastic socket hits the female screw of the outer tube, thereby fixing the length of the cane.   The extension part is formed with a first ring piece and a second ring piece on each extension piece, and the position of the extension part is limited to a resilient socket by the first ring piece and the second ring piece. 1 cane expansion and contraction adjustment structure.   2. The expansion / contraction adjustment structure for a cane according to claim 1, wherein a ring portion projecting to the surface is provided at an intermediate portion of the push member, and the ring portion hits a tube opening portion of the inner tube.   A plurality of axial grooves are provided in the connecting portion of the push member, the push member hits the inner tube by the connecting portion, and the amount of pressing deformation of the connecting portion is increased by the axial recessed groove. The expansion / contraction adjustment structure of the cane according to claim 1.   The grip is provided with a through-hole, and a hat portion is formed at one end of the control member, and is inserted into the through-hole from the opposite end and fixed to the interlocking rod. 2. The expansion / contraction adjusting structure for a cane according to claim 1, wherein the structure is pressed.   The inner tube is provided with a groove at one end close to the grip, the control member includes a stopper, a socket, and a handle, and the stopper and the interlocking rod are fixed by screws, and the handle is pivotally connected to the socket by a sheath. Further, when the socket is attached to the position of the groove of the inner tube, one end of the handle is inserted into the groove and hits the stopper, so that the handle can be moved in a lever-type manner. Stretch adjustment structure of the cane.