JP2009189666A - Connecting device of collapsible stick and collapsible stick - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide connecting devices of a collapsible stick which make it possible to collapse without damaging the surface of a stick body, to handle safely and easily, and to achieve durable and inexpensive structure. <P>SOLUTION: Each connecting device 5 forming a joint part of the stick body 1 has the following components a tapered connecting shaft part 10 forming the end of one component shaft 4 to be connected, a tapered connecting hole part 11 forming the end of the other component shaft 4 to be connected, a connecting cord 12 for connecting both component shafts 4 and 4, and a resilient fixing part 13 for removably and resiliently engaging the tapered connecting shaft part 10 and the tapered connecting hole part 11. Length of the connecting cord 12 is enough for preventing tension applied to the cord 12 when both components shafts 4 and 4 are folded and collapsed. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a foldable walking stick connecting device and a foldable walking stick, and more particularly, in a folding stick in which the shaft of the walking stick main body can be bent at each joint portion, in the folding storage when not in use, etc. Part connection structure.

  A foldable walking stick has a structure in which a plurality of walking stick bodies (usually 4 or 5) are connected so as to be foldable, and these constituent shafts are stretched and connected at joints to form a single walking stick body. In addition to functioning, the above-described configuration shaft is folded at a joint and compactly folded, so that the configuration is convenient for storage and carrying.

  By the way, as a connection structure constituting the joint part of the stick body, the end parts of the constituent shafts constituting the stick body are tapered in addition to those in which the constituent shafts constituting the stick body are pivotally connected to each other. A structure that has a shape structure that fits, and a stretchable string body, for example, a rubber string, is inserted through all the constituent shafts, and both ends thereof are connected and fixed to the outermost constituent shafts. There is.

  In the latter connection structure, at the time of use, the ends of the plurality of constituent shafts are fitted to each other, and the fitted state is fixed and held by the elastic contraction force (elastic return force) of the string body. When not in use, as shown in FIG. 8, while the string body a is elastically stretched, the plurality of constituent shafts b, b,. While releasing the combined state and separating it, it is folded and compactly folded as shown in the figure.

  However, such a conventional connection structure has the following problems and has been demanded to be improved.

  That is, at the time of folding when not in use, the elastic restoring force of the string body a is constantly acting on each of the constituent shafts b, b,... As shown in FIG. 8, the end portions c and d of each of the first and second end portions c and d are attracted to each other, so that the end edge e of one constituent shaft b comes into contact with the surface f of the other constituent shaft b with elasticity (see FIG. 8). As a result, the sharp edge e of the one component shaft b damages or peels off the decorative coating applied to the surface f of the other component shaft b. Further, there has been a problem that the constituent material of the surface f is damaged, and the appearance design of the stick body is damaged.

  In addition, when folded when not in use, it is usually stored in a dedicated storage bag or storage case and carried or stored, but in the folded state, the elastic return force of the cord bodies a, a,. Since each of the constituent shafts b, b,... Expands and becomes bulky, it must be restrained and held in a folded state by a restraining string g such as a rubber belt, which is inconvenient to handle.

  Further, the elastic restoring force of the string body a connecting the constituent shafts b, b,... Is too strong, and the end portions c, d of the adjacent constituent shafts b, b are separated from each other and folded from the folded state at the time of use. There is also a problem that the connecting and assembling work is difficult and dangerous, or that the string body a is deteriorated and damaged by repeated folding and connecting and assembling.

  In addition, although there exists what is disclosed by patent document 1 as a connection structure of the folding type stick which eliminates these problems, there existed a problem that this structure was complicated and the manufacturing cost and also the product cost became high. .

JP 2004-329839 A

  The present invention has been made in view of such conventional problems. The object of the present invention is not to damage the surface of the stick main body when it is folded when not in use, and it is safe to handle at the time of folding work or connecting and assembling work. Another object of the present invention is to provide a foldable stick connecting device that is easy and has excellent durability and is inexpensive.

  Another object of the present invention is to provide a foldable stick having the connecting device.

  In order to achieve the above object, the folding stick connecting device of the present invention is a connecting device that constitutes the joint portion in the folding stick in which the constituent shaft of the stick main body can be bent at each joint portion. A taper connection shaft portion that forms an end portion of one of the constituent shafts to be connected, a taper connection hole portion that forms an end portion of the other constituent shaft to be connected, a connecting string that connects the two constituent shafts, and the taper portion And a resilient fixing means for elastically engaging and fixing the connecting shaft portion and the tapered connecting hole portion. The length of the connecting string is determined by bending both the constituent shafts. It is characterized in that it is set to a size that does not apply tension to the connecting string when folded.

The following configuration is adopted as a preferred embodiment.
(1) The bullet fixing means includes an engagement groove provided in one of the taper connection shaft portion and the taper connection hole portion, and a bullet engagement means provided in the other, When the taper connection shaft portion and the taper connection hole portion are fitted in the axial direction, the engagement element of the elastic engagement means is configured to elastically engage with the engagement groove.

(2) The elastic engagement means includes an engagement ball facing the other engagement groove from one of the tapered connection shaft portion and the tapered connection hole portion, and the engagement ball. And a spring member that is elastically biased in the direction of engagement with the mating groove.

(3) The engagement groove is formed on one of the outer peripheral surface of the taper connection shaft portion and the inner peripheral surface of the taper connection hole portion so as to extend in the entire circumferential direction of the peripheral surface, and is annularly engaged. The engaging balls are arranged at equal intervals in the circumferential direction on either the outer peripheral surface of the tapered connecting shaft portion or the inner peripheral surface of the tapered connecting hole portion. 4. The folding stick connecting device according to claim 3, wherein the urging stick is biased in the direction of engagement with the engagement groove.

(4) The spring member is in the form of a coil spring that elastically biases the plurality of engagement balls in the direction of engagement with the engagement groove.

(5) The spring member is in the form of an annular leaf spring that elastically urges the plurality of engagement balls in the direction of engagement with the engagement groove.

(6) The engagement groove is formed to extend around the entire circumference in the circumferential direction of the outer peripheral surface of the tapered connecting shaft portion to form an annular engagement groove. When the taper connection shaft portion and the taper connection hole portion are fitted in the axial direction, the engagement member of the elastic engagement means is provided in the engagement groove. And the taper connection state between the taper connection shaft portion and the taper connection hole portion is maintained.

(7) The bullet fixing means comprises a pair of permanent magnets disposed opposite to the taper connection shaft and the taper connection hole, and when the taper connection shaft and the taper connection hole are fitted in the axial direction. In addition, the taper fitting state between the tapered connecting shaft portion and the tapered connecting hole portion is maintained by the magnetic attraction action between the pair of permanent magnets.

(8) The connecting string is a wire member having a structure in which both end portions thereof are slidably engaged with the axial center portions of the tapered connecting shaft portion and the tapered connecting hole portion.

  Further, the folding type walking stick of the present invention is a folding type walking stick in which the walking stick main body is foldably connected to a plurality of constituent shafts, and the connecting device is provided at a connecting portion of the constituent shaft. It is characterized by being.

  According to the present invention, the connecting device that forms the joint portion of the stick body forms the tapered connecting shaft portion that forms the end portion of one of the constituent shafts to be connected and the end portion of the other constituent shaft that is to be connected. A taper connecting hole; a connecting string for connecting the two shafts; and a resilient fixing means for elastically engaging and fixing the tapered connecting shaft and the taper connecting hole. Since the length of the connecting string is set to a size that does not apply tension to the connecting string when the two constituent shafts are bent and folded, the following excellent effects can be obtained. It is possible to provide a low-cost folding stick connecting device that does not damage the surface of the stick body when folded when not in use, is safe and easy to handle during folding and connecting and assembling, and has excellent durability.

(1) The above-described shafts can be attached and detached by a one-touch operation only by elastically engaging and releasing the elastic fixing means, and the assembling and folding operations of the walking stick body are safe and safe regardless of age or sex. Easy.

(2) The connecting string connects only the constituent shafts to be connected to each other, and connects all the constituent shafts like a string having a function as an engaging means for connecting and fixing the conventional constituent shafts. Therefore, the attachment and detachment of the constituent shafts at each joint portion of the stick body is an independent operation, and also in this respect, the assembly and folding operations of the stick body are safe and easy.

(3) Since the length dimension of the connecting string is set to a size that does not apply tension to the connecting string when the two constituent shafts are bent and folded, the connecting string can be folded in a non-use folded state. The tension of the component shaft does not act on each component shaft, so that the ends of the adjacent component shafts are attracted to each other, and the edge of one component shaft does not contact the surface of the other component shaft, The decorative coating applied to the surface of the component shaft is not peeled off, and the surface component material itself is not damaged, and the appearance design of the stick body is not impaired.

(4) Since the tension of the connecting string does not act on each component shaft in the folded state when not used, the component shaft does not expand even if the folded state is not particularly restrained and held by the restraining string. Is easy.

(5) Since the elastic fixing means for connecting and fixing the constituent shafts is an independent unit structure, the structure is simple, inexpensive and durable compared to the conventional connecting string having a structure shared by all the constituent shafts. Excellent in properties.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Throughout the drawings, the same reference numeral indicates the same component or element.

Embodiment 1
1 to 5 show a folding stick according to the present invention, and this stick is provided integrally with a long stick-shaped stick main body 1 and an upper end of the stick main body 1, as shown in FIG. A grip 2 and a non-slip portion 3 integrally provided at the lower end of the stick main body 1, and the stick main body 1 includes a plurality of (5 in the illustrated example) shafts 4. 4... (4 a to 4 e) are connected in a foldable manner, and a connecting structure (connecting device) in which connecting portions of the constituent shafts 4, 4, that is, joint portions of the walking stick main body 1 are shown in FIGS. ) 5.

  Although not shown in detail, the stick body 1 has a folding structure in which the constituent shafts 4, 4,... (4 a to 4 e) can be bent by the connecting device 5 of each joint portion, and the uppermost portion. The structure shaft 4a is configured to be adjustable in expansion and contraction as a length adjusting portion. The above-described shafts 4, 4,... (4 a to 4 e) are in the form of hollow cylindrical pipes made of a light metal such as aluminum, and the surface is appropriately subjected to any coating for decoration that determines the appearance design of the stick. ing.

  The grip 2 is integrally fixed to the upper end portion of the walking stick main body 1, and has a shape and dimension in consideration of ease of gripping by the user. Further, a connecting portion 2a connected to the uppermost constituent shaft 4a of the stick body 1 is provided at the lower portion of the grip 2, and the connection between the connecting portion 2a and the upper end portion of the constituent shaft 4a is provided. Although not specifically shown in the drawings, an appropriate elastic fixing means such as screw fixing with an internal thread part and an external thread part, adhesive fixing with an adhesive, or fixing with both is selectively employed. .

  The anti-slip portion 3 has a rubber cap shape and is fitted and attached to the lower end portion of the lowermost component shaft 4 e of the stick body 1.

  As shown in FIG. 2, the connecting device 5 that constitutes each joint part of the stick body 1 includes a taper connection shaft part 10, a taper connection hole part 11, a connecting string 12 that connects the constituent shafts 4 and 4 to be connected, And a pair of constituent shafts to be connected to each other, including a resilient fixing portion (percussion fixing means) 13 for engaging and fixing the tapered connecting shaft portion 10 and the tapered connecting hole portion 11 in a releasable manner. 4 and 4 are provided at connection sites. Hereinafter, description will be given by taking the connecting portion of the constituent shafts 4b and 4c as an example.

  As shown in FIG. 1, the tapered connecting shaft portion 10 forms the end of one of the constituent shafts 4c (4) to be connected. Specifically, the tapered member 15 has a tapered outer peripheral surface 10a. Consists of.

  The cylindrical member 15 of the illustrated embodiment is in the form of a hollow cylinder made of a light metal such as aluminum, like the constituent shaft 4, and the base end side half portion 15a of the constituent shaft 4c (4) is made of a hollow cylindrical pipe. The tapered connecting shaft portion 10 is integrally formed coaxially with the fitting cylindrical portion 15a and the annular flange 15b being separated from each other.

  The annular flange 15b abuts and engages with the end edge of the component shaft 4c (4) when the fitting cylindrical portion 15a is inserted and fitted to the end of the component shaft 4c (4). 4c (4) is a portion that forms the connection end face, and the outer diameter thereof is set to the same dimension as the outer diameter of the constituent shaft 4c (4) so as to be flush with the outer peripheral face of the constituent shaft 4c (4). Yes.

  The outer peripheral surface of the tapered connecting shaft portion 10 has an outer peripheral contour shape as shown in FIG. 2, and an annular engagement groove 20 constituting a later-described elastic fixing portion 13 is provided at the tip portion thereof.

  The taper connection hole portion 11 forms a pair with the taper connection shaft portion 10 and forms the end portion of the other component shaft 4b (4) to be connected as shown in FIG. The cylindrical member 16 has a taper inner peripheral surface 11a that expands and is taper-fitted to the taper connection shaft portion 10.

  The cylindrical member 16 of the illustrated embodiment is a hollow cylindrical member made of a light metal such as aluminum, like the component shaft 4, and the end of the component shaft 4b (4) whose cylindrical outer peripheral surface 16a is a hollow cylindrical pipe. It is set as the fitting cylindrical part inserted and fitted by the part. An annular flange 16b is provided at the tip of the cylindrical member 16, and the inside of the hollow is the tapered connecting hole 11 coaxial with the fitting cylindrical portion 16a.

  The annular flange 16b abuts and engages with the end edge of the component shaft 4b (4) when the fitting cylindrical portion 16a is inserted and fitted to the end of the component shaft 4b (4). 4b (4) is the part that forms the connection end face, and the outer diameter thereof is set to the same dimension as the outer diameter of the constituent shaft 4b (4) so as to be flush with the outer peripheral face of the constituent shaft 4b (4). Yes.

  The inner peripheral surface of the tapered connecting hole portion 11 has an inner peripheral contour shape as shown in FIG. 2, and a resilient engagement portion (a resilient engagement member) constituting a resilient fixing portion 13 to be described later at the proximal end portion thereof. Combination means) 21 is provided.

  In the pair of constituent shafts 4b, 4c (4, 4) to be connected, the tapered connecting shaft portion 10 and the tapered connecting hole portion 11 are taper-fitted in the axial direction, whereby both the constituent shafts 4b, 4c are connected. (4, 4) are connected coaxially and integrally.

  The connecting string 12 connects the pair of constituent shafts 4b, 4c (4, 4) to be connected so as to be foldable. Specifically, both ends thereof are tapered with the tapered connecting shaft portion 10. A structure is slidably engaged with the axial center portion of the connection hole portion 11.

  The connecting string 12 is made of a flexible string material, and a stretchable string body such as a rubber string or a wire member such as a wire rope formed by twisting steel wires is preferably used. As the connecting string 12 in the illustrated embodiment, a thin wire rope is used.

  As shown in FIG. 2, both ends of the connecting string 12 pass through the taper connection shaft portion 10 of the constituent shafts 4b and 4c (4, 4) and the insertion holes 10b and 11b of the taper connection hole portion 11, respectively. At the same time, retaining members 12a and 12b for securing are attached and fixed to both ends by welding or the like to prevent the connecting string 12 from being inserted from the insertion holes 10b and 11b, and further, the two constituting shafts 4b and 4c (4 4) Individual separation is prevented.

  The length of the connecting string 12 is set to a size that does not apply tension to the connecting string 12 when the two constituent shafts 4b, 4c (4, 4) are folded and folded. As shown in FIG. 5, the tension of the connecting string 12 does not act on the constituent shafts 4, 4,..., And the constituent shafts 4, 4,.

  The bullet fixing part (ballistic fixing means) 13 is for engaging and fixing the taper connection shaft part 10 and the taper connection hole part 11 in a detachable and elastic manner. Specifically, FIG. As shown, the engagement groove 20 provided in one of the taper connection shaft portion 10 and the taper connection hole portion 11, and the elastic engagement portion (the elastic engagement means) 21 provided in either one of them. It consists of and.

  In the illustrated embodiment, as described above, the engagement groove 20 is provided on the outer peripheral surface of the taper connection shaft portion 10, and the elastic engagement portion 21 is provided on the inner peripheral surface of the taper connection hole portion 11. It has been.

  The engaging groove 20 has an arcuate cross-sectional shape as shown in the figure, and is formed into an annular engaging groove formed on the outer peripheral surface of the tip end portion of the tapered connecting shaft portion 10 so as to extend in the entire circumferential direction. Yes.

  The elastic engagement portion 21 is a plurality of engagement balls 22, 22,... That are arranged at equal intervals in the circumferential direction of the tapered connection hole 11, and these engagement balls 22, 22,. And a spring member 23 for energizing and energizing as a main part.

  In the illustrated embodiment, specifically, the taper connection shaft portion 10 in the taper fitting state in which the taper connection shaft portion 10 and the taper connection hole portion 11 are taper-fitted to the outer peripheral surface of the proximal end portion of the taper connection hole portion 11. An annular groove 24 is formed on the outer peripheral surface of the tapered connecting hole portion 11 facing the annular engagement groove 20 so as to extend in the entire circumferential direction, and four ball pockets 25, 25,. The ball balls 25, 25,... Are accommodated and held in the ball pockets 25, 25,.

  As shown in FIGS. 3B and 3C, each ball pocket 25 has a conical inner diameter surface 25 a and a taper formed by forming a circular opening 25 b whose bottom faces the inner periphery of the taper connection hole portion 11. The circular opening 25 b is set to have a diameter smaller than the diameter of the engagement ball 22.

  Specifically, the engagement ball 22 is made of a material having excellent rigidity and wear resistance. In the illustrated embodiment, a steel ball is adopted, and the engagement ball 22 is rotatably accommodated and held in the ball pocket 25. A part of the taper connection hole 11 protrudes from the inner periphery of the tapered connection hole 11 through the circular opening 25b.

  The spring member 23 is in the form of an annular leaf spring in which a flat spring material is bent into an annular shape corresponding to the shape and dimension of the annular groove 24, whereby the four ball pockets are formed. The four engaging balls 22, 22,... Arranged in four circumferential directions via 25, 25,... Are radially inward, that is, with the engaging grooves 20 of the tapered connecting shaft portion 10. It is set as the structure which carries out the elastic urging | biasing simultaneously to radial direction inside toward an engagement direction.

  Then, in the elastic fixing part 13 of the pair of constituent shafts 4b, 4c (4, 4) to be connected, the taper connection shaft part 10 and the taper connection hole part 11 are pressed toward the approaching side in the axial direction to be taper-fitted. Then, the engagement balls 22, 22,... Of the elastic engagement portion 21 of the taper connection hole portion 11 elastically enter and lock into the engagement groove 20 of the taper connection shaft portion 10, and the taper connection. The taper fitting state between the shaft portion 10 and the taper connection hole portion 11 is maintained. On the other hand, by pulling the taper connection shaft portion 10 and the taper connection hole portion 11 from the taper fitting state toward the axially separated side. The elastic engagement state between the engagement groove 20 and the engagement balls 22, 22,.

  In this case, the pressing force and tensile force required for the engagement and release of the elastic fixation unit 13 take into consideration the operation ability of the user of the folding type walking stick (arm strength and gripping force according to the sex age of the young and old) Then, the engagement structure between the engagement groove 20 and the elastic engagement portion 21 and the spring force of the spring member 23 are set as appropriate.

  Thus, when the folding-type walking stick configured as described above is used, a plurality of (5 in the present embodiment) constituent shafts 4a to 4e of the walking stick body 1 are coaxially connected to the joint connecting device 5 respectively. 1 and a single stick main body 1 as shown in FIG.

  On the other hand, at the time of folding storage when not in use, the constituent shafts 4a to 4e are detached and bent as described above by the connecting device 5 of the joint part (see FIG. 2 (a) → (b)). By folding as shown in FIG. 5 (a) or (b), a compact configuration convenient for storage and carrying is obtained. That is, FIG. 5A shows a state where all the constituent shafts 4a to 4e are arranged in parallel and folded, and FIG. 5B shows a state where the constituent shafts 4a to 4e are folded together in a bundle. Yes.

  In this case, in the walking stick of the present embodiment, the connecting device 5 constituting the joint part of the walking stick main body 1 has a tapered connecting shaft part 10 that forms the end of one constituent shaft 4 (for example, 4c) to be connected; A taper connection hole 11 that forms the end of the other component shaft 4 (for example, 4b) to be connected, a connecting string 12 that connects the two component shafts 4b and 4c, the taper connection shaft portion 10 and the taper connection hole. And a resilient fixing part 13 that engages and fixes the part 11 in a detachable manner, and the length of the connecting string 12 bends and folds both the constituent shafts 4b and 4c. At that time, since the connecting string 12 is set to a size that does not apply tension, excellent effects such as those listed below can be obtained, and the decorative effect on the surface of the walking stick main body at the time of folding without use is not impaired, Handling during work and connected assembling work fold is safe and easy and it is possible to provide a connection structure of inexpensive stick having excellent durability.

(A) The constituent shafts 4 and 4 (for example, 4b and 4c) can be attached / detached by a one-touch operation only by elastically engaging and releasing the elastic fixing portion 13 regardless of age or sex. The assembly and folding operation of the stick body 1 is safe and easy.

(B) The connecting string 12 connects only the constituent shafts 4 and 4 (for example, 4b and 4c) to be connected, and connects and fixes the conventional constituent shafts b, b,... Shown in FIG. .. Are not connected to each other as in the case of the string body a that also functions as an engaging means, so that the above-described shafts 4 and 4 (for example, 4b and 4c) in each joint portion of the stick body 1 are connected to each other. The attachment and detachment are independent operations, and also in this respect, the assembly and folding operation of the stick body 1 are safe and easy.

(C) The length dimension of the connecting string 12 is set to a size that does not apply tension to the connecting string 12 when the two constituent shafts 4 and 4 (for example, 4b and 4c) are bent and folded. In the folded state when not in use, the tension of the connecting string 12 does not act on each of the constituent shafts 4, 4,..., So that the ends of the adjacent constituent shafts 4, 4 (for example, 4b, 4c) are connected to each other. A decorative component applied to the surface of the component shaft 4 without being brought into contact with the surface of the other component shaft 4, 4 (for example, 4b) by being pulled toward each other. The appearance design of the walking stick main body 1 is not spoiled without peeling off the coating or the like or damaging the surface constituent material itself.

(D) In the folded state in which the tension of the connecting string 12 is not used, each of the constituting shafts 4, 4,... Does not act. 4,... Does not expand and is easy to handle.

(E) Since the elastic fixing portions 13 for connecting and fixing the constituent shafts 4 and 4 have independent unit structures, compared to a conventional connecting string having a structure shared by all the constituent shafts 4, 4. Therefore, the structure is simple, inexpensive, and excellent in durability.

Embodiment 2
This embodiment is shown in FIG. 6, and the specific configuration of the bullet fixing portion 13 of the first embodiment is modified.

  That is, in the elastic engagement portion 21 of the elastic fixation portion 13 of the present embodiment, the spring member 123 that elastically urges the engaging balls 22, 22,. In accordance with the shape and dimension of the annular groove 24, the coil spring is formed in a spiral shape by being wound into a spiral cylinder.

  And by this spring member 123, the four engagement balls 22, 22,... Arranged in four circumferential directions in the circumferential direction through the four ball pockets 25, 25,. The taper connection shaft portion 10 is simultaneously elastically biased inward in the radial direction toward the engagement direction with the engagement groove 20.

Thus, as described above, the spring member 123 is in the form of a coil spring, so that the spring force of the spring member 23 when setting the pressing force and tensile force required for the elastic engagement and release in the elastic fixing portion 13 is obtained. Can be designed easily and with high accuracy.
Other configurations and operations are the same as those of the first embodiment.

Embodiment 3
This embodiment is shown in FIG. 7, and the specific configuration of the connection device 5 of the first embodiment is modified.

  That is, in the connection device 5 according to the present embodiment, the elastic fixing portion 13 is constituted by a pair of permanent magnets 50 and 51 arranged to face the tapered connection shaft portion 10 and the tapered connection hole portion 11.

  The permanent magnets 50 and 51 are in the form of annular magnets provided with insertion holes 50a and 51a communicating with the insertion holes 10b and 11b of the taper connection shaft portion 10 and the taper connection hole portion 11, respectively, at the central portion thereof. The permanent magnet 50 is attached and fixed to the distal end portion of the tapered connecting shaft portion 10, and the other permanent magnet 51 is attached and fixed to the proximal end portion of the tapered connecting hole portion 11.

  Specifically, the basic configuration of the taper connection shaft portion 10 and the taper connection hole portion 11 is the same as that of the first embodiment as shown in the figure, and one permanent magnet 50 is provided inside the tip end portion of the taper connection shaft portion 10. Is fitted and fixed, and the other permanent magnet 51 is fitted and fixed in the vicinity of the proximal end portion of the tapered connection hole portion 11.

  Specifically, the basic configuration of the taper connection shaft portion 10 and the taper connection hole portion 11 is the same as that of the first embodiment as shown in the figure, and one permanent magnet 50 is provided inside the tip end portion of the taper connection shaft portion 10. Is fitted and fixed, and the other permanent magnet 51 is fitted and fixed in the vicinity of the proximal end portion of the tapered connection hole portion 11.

  Further, as shown in FIG. 7, the connecting string 12 has both ends at the tapered connection shaft portion 10 of the constituent shafts 4 b and 4 c (4, 4), the insertion holes 10 b and 11 b of the tapered connection hole portion 11, and permanent. The magnets 50 and 51 are inserted through the insertion holes 50a and 51a, and the latching members 12a and 12b at both ends of the magnets 50 and 51 are prevented from being removed from the insertion holes 50a and 51a. 4 and 4) are effectively prevented.

  Thus, in the elastic fixing part 13 of the pair of constituent shafts 4b, 4c (4, 4) to be connected, the taper connection shaft part 10 and the taper connection hole part 11 are taper-fitted to the approaching side in the axial direction. Then, the magnetic attractive force between the pair of permanent magnets 50 and 51 acts to promote the taper fitting operation, and the taper connection shaft portion 10 and the taper connection hole portion 11 are taper-fitted in the axial direction. In this case, the taper connection state between the taper connection shaft portion 10 and the taper connection hole portion 11 is retained elastically by the magnetic attraction action between the permanent magnets 50 and 51. By pulling the taper connection shaft portion 10 and the taper connection hole portion 11 toward the side in the axial direction, the mutual magnetic attraction action weakens and disappears with the separation of the permanent magnets 50 and 51, and the elastic The taper mating state is It is.

In this case, the magnetic attractive force between the permanent magnets 50 and 51 in the bullet fixing part 13 is appropriately determined in consideration of the operation ability of the user of the folding stick (such as arm strength and grip strength according to the sex age of men and women). The setting is the same as in the first embodiment.
Other configurations and operations are the same as those of the first embodiment.

  In addition, Embodiment 1-3 mentioned above shows the suitable embodiment of this invention to the last, This invention is not limited to this, A various design change is possible within the range.

  For example, in the resilient fixing portion 13 of the first embodiment, the engagement groove 20 and the resilient engagement portion 21 provided in the tapered connection shaft portion 10 and the tapered connection hole portion 11 are arranged in a reverse arrangement, and the tapered connection shaft. The specific structure can be variously modified within the range in which the same effect can be obtained, such as the elastic engagement portion 21 being provided in the portion 10 and the engagement groove 20 being provided in the tapered connection hole portion 11. It is.

1 shows a main part configuration of a stick body of a foldable stick that is Embodiment 1 of the present invention, FIG. 1 (a) is an enlarged front view showing a joint part of the stick body, and FIG. 1 (b) is the same stick body. It is front sectional drawing which expands and shows the inside of this joint part. FIG. 2 (a) is a front sectional view showing a connection fixing state of the connection device, and FIG. 2 (b) is a front sectional view showing a separated state of the connection device. It is. FIG. 3 (a) is a sectional view taken along line III-III in FIG. 2 (a), and FIG. 3 (b) is a line BB in FIG. 3 (a). Fig. 3 (c) is a front view showing a part of the main part of the bullet engaging portion cut away. It is a front view which shows the state at the time of use of the folding type stick. Similarly, FIG. 5A is a front view showing a folded state when the folding type walking stick is not used, FIG. 5A shows a state in which all the constituent shafts are folded in parallel, and FIG. 5B shows the constituent shafts bundled together. Shows the folded state. FIG. 6A is a front view of the configuration shaft, and FIG. 6B is a front view of the configuration shaft of the folding stick connecting device according to the second embodiment of the present invention. It is front sectional drawing which shows a cross-section. It is front sectional drawing which shows the isolation | separation state of the connection apparatus of the folding type stick which is Embodiment 3 of this invention. It is a front view which shows the folding state at the time of non-use of the conventional folding type stick.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stick body 4 (4a-4e) Structure shaft 5 Connection structure (connection apparatus)
DESCRIPTION OF SYMBOLS 10 Tapered connection shaft part 10a Tapered outer peripheral surface 11 Tapered connection hole part 12 Connection string 13 Bullet fixed part (Burn fixed means)
20 Engagement groove 21 Bullet engagement part (Bullet engagement means)
22 Engagement ball (engagement element)
23 Spring member 50, 51 Permanent magnet 123 Spring member

Claims (10)

In a foldable walking stick in which the shaft of the walking stick main body can be bent at each joint, the connecting device constituting the joint,
A tapered connecting shaft that forms the end of one component shaft to be connected;
A tapered connection hole that forms the end of the other component shaft to be connected;
A connecting string connecting the two constituent shafts;
A resilient fixing means for releasably engaging and fixing the tapered connecting shaft portion and the tapered connecting hole portion;
The length of the connecting string is set to a size that does not apply tension to the connecting string when the two constituent shafts are bent and folded. The bullet fixing means includes an engagement groove provided in one of the taper connection shaft portion and the taper connection hole portion, and a bullet engagement means provided in the other,
When the taper connection shaft portion and the taper connection hole portion are fitted in the axial direction, the engagement element of the elastic engagement means is configured to elastically engage with the engagement groove. The foldable stick connecting device according to claim 1, wherein the connecting device is a folding stick. The elastic engagement means includes an engagement ball facing the other engagement groove from one of the taper connection shaft portion and the taper connection hole portion, and the engagement ball as the engagement groove. The folding stick connecting device according to claim 2, further comprising: a spring member that urges and urges toward the engagement direction. The engagement groove is formed on one of the outer peripheral surface of the taper connection shaft portion and the inner peripheral surface of the taper connection hole portion so as to extend in the entire circumferential direction of the peripheral surface. And
The engaging balls are arranged at equal intervals in the circumferential direction on either the outer peripheral surface of the tapered connecting shaft portion or the inner peripheral surface of the tapered connecting hole portion. The folding stick connecting device according to claim 3, wherein the urging and urging force is applied in an engaging direction. The folding spring according to claim 4, wherein the spring member is in the form of a coil spring that elastically urges the plurality of engaging balls in an engaging direction with the engaging groove. Connected device. 5. The folding type according to claim 4, wherein the spring member is in the form of an annular leaf spring that elastically biases the plurality of engaging balls in an engaging direction with the engaging groove. Stick connection device. The engagement groove is formed to extend around the entire circumference in the circumferential direction of the outer peripheral surface of the taper connection shaft portion to form an annular engagement groove, and the resilient engagement means includes the taper connection hole. It is provided facing the inner peripheral surface of the part,
When the taper connection shaft portion and the taper connection hole portion are fitted in the axial direction, an engagement element of the elastic engagement means is elastically engaged with the engagement groove, and the taper connection shaft portion and The folding stick connecting device according to claim 2, wherein the connecting device is configured to be held in a taper fitting state with the taper connection hole. The bullet fixing means comprises a pair of permanent magnets arranged to face the tapered connecting shaft portion and the tapered connecting hole portion,
When the taper connection shaft portion and the taper connection hole portion are fitted in the axial direction, the taper connection state between the taper connection shaft portion and the taper connection hole portion is maintained by the magnetic attraction action between the pair of permanent magnets. The folding stick connecting device according to claim 1, wherein the folding stick connecting device is configured as described above. 2. The folding according to claim 1, wherein the connecting string is a wire member having a structure in which both ends thereof are slidably engaged with axial center portions of the tapered connecting shaft portion and the tapered connecting hole portion. Type stick connection device. The stick body is a foldable walking stick of a type in which a plurality of constituent shafts are foldably connected,
The foldable cane according to any one of claims 1 to 9, wherein the connection device according to any one of claims 1 to 9 is provided at a connection portion of the component shaft.

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