JP2005186818A - Bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply, easily and detachably connecting a wheel for level difference to a bag body. <P>SOLUTION: In the bag, the wheel 1 for level difference is detachably connected to the bag body 2 through an axle 3. The wheel 1 for level difference is provided with a wheel 5 at a distal end of a projection part 4A of a rotation body 4 radially protected. The rotation body 4 is provided with a bearing hole 8 inserted with the axle 3; and an engagement mechanism 9 for connecting the axle 3 by an engagement structure. The engagement mechanism 9 is provided with an engagement plate 11 for engaging the axle 3 by sliding in a direction perpendicular to the axle 3; a guide part 12 for sliding the engagement plate 11; an elastic body 13 for urging the engagement plate 11 in the engagement direction; and an operation part 14 for releasing the engagement state of the engagement plate 11. The engagement part 11A of the engagement plate 11 is guided by an engagement groove 30 of the axle 3 inserted to the bearing hole 8 and the wheel 1 for level difference is connected to the axle 3 in the engagement state and is removed from the axle 3 by releasing the engagement state of the engagement groove 30 and the engagement part 11A by operating the operation part 14. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a kite capable of ascending and descending steps such as stairs. In particular, the present invention relates to a scissors that can freely attach and detach wheel portions connected to both sides of the scissors.

  A bag provided with traveling wheels on a bag such as a travel bag or a suitcase can be conveniently used. This is because it can be moved easily by running on wheels without lifting when moving. The kite of this structure can move, for example, by providing wheels such as casters at two or four locations on the bottom surface of the kite body. However, the kite of this structure can run extremely easily on a flat place with no steps, but cannot move by running wheels on places with steps such as stairs. Therefore, it is necessary to lift the entire bag up and down at such a stepped portion and it cannot be used conveniently.

In order to solve such a problem, a wheel for a stair that is attached to a moving body such as a kite or a vehicle and moves up and down a stepped portion such as a staircase has been developed (see Patent Documents 1 to 3). .
Japanese Utility Model Publication No. 57-191669 Japanese Laid-Open Patent Publication No. 1-301459 JP 2001-310738 A

  The stair wheels described in these publications have apexes in which the rotating body protrudes in three or four directions, and wheels are provided at these apexes. When a moving body equipped with stairs wheels of this structure reaches the stepped portion, it rolls the rotating body, climbs over the steps with the wheels arranged at the top located in the traveling direction, and steps such as stairs. Can rise. Therefore, it can be conveniently moved while moving up and down steps such as stairs.

  However, since the wheel of this structure is the structure which provided the wheel in the vertex which protrudes in 3 or 4 directions, the external shape of the wheel for stairs as a whole will become large. This is because the wheel for stairs cannot move up and down steps such as stairs if the outer shape is small. In particular, a bag equipped with a stair wheel having a large outer shape may not always be used conveniently because the large wheel gets in the way. This is because, in the case of a saddle, unlike a vehicle or the like, in all cases, the vehicle is not necessarily used by running on wheels. For example, a large wheel gets in the way when the bag is lifted and carried by hand, or when the bag is stored in a limited space. In addition, the large wheels are also in the way when transporting the kite on a vehicle or the like. In particular, since this kite has large wheels on both sides, when it is transported by a vehicle or the like, a load acts on the large protruding portion of the wheel, causing damage such as damage to the wheel or deformation of the axle. There is also. As described above, it is difficult to smoothly run the kite in which the wheel is damaged or the axle is deformed. In particular, although the main body portion of the kite can be used, the kite cannot be used due to a problem with the wheel or axle.

The present invention has been developed for the purpose of solving the above drawbacks. An important object of the present invention is to provide a kite capable of detachably connecting a step wheel for raising and lowering a step such as stairs to the kite body.
In particular, it is an object of the present invention to provide a scissors that can attach and detach a step wheel firmly and securely with a very simple mechanism and simple operation.

In the kite of the present invention, a step wheel 1 is connected to both sides of a lower end portion of the kite body 2 via an axle 3, and the step unit such as a staircase is moved up and down by the step wheel 1. The step wheel 1 is a rotationally symmetric position, and is rotatably connected to a rotating body 4 having a protruding portion 4A protruding radially in at least three directions, and a tip end of each protruding portion 4A of the rotating body 4. The wheel 5 is provided. The step wheel 1 is detachably connected to the axle 3 with the following connection structure.
(A) The rotating body 4 includes a bearing hole 8 for inserting the tip end portion of the axle 3 and a locking mechanism 9 for connecting the axle 3 inserted into the bearing hole 8 with a locking structure at the center.
(B) The locking mechanism 9 includes a locking plate 11 that slides in a direction perpendicular to the axle 3 to lock the axle 3, a guide portion 12 that slides the locking plate 11 in a predetermined direction, An elastic body 13 that urges the plate 11 in the locking direction and an operation unit 14 for releasing the locking state by sliding the locking plate 11 in the direction opposite to the locking direction are provided.
(C) The axle 3 is provided with a ring-shaped locking groove 30 on the outer peripheral surface of the tip.
(D) The locking plate 11 has a locking portion 11 </ b> A that is inserted into the locking groove 30 to lock the axle 3.
(E) In a state in which the axle 3 is inserted into the bearing hole 8 of the rotating body 4, the engaging portion 11 A of the engaging plate 11 is guided to the engaging groove 30 of the axle 3, and the step wheel 1 is engaged with the axle 3. It is connected in a stopped state.
(F) The step wheel 1 is removed from the axle 3 in a state where the operation portion 14 is operated to release the engagement state between the engagement groove 30 of the axle 3 and the engagement portion 11A of the engagement plate 11.

  The rotating body 4 can connect and hold a holding cylinder 10 at the center, and can open a bearing hole 8 in the holding cylinder 10. The bearing hole 8 can be formed in a tapered shape in which the opening end portion into which the axle 3 is inserted gradually becomes wider toward the opening edge. The axle 3 can be provided with a slide surface 33 formed of an inclined surface or a curved surface at an end portion on the tip side from the locking groove 30.

  The locking plate 11 can open a through hole that allows the axle 3 to pass therethrough, and an opening edge of the through hole can be used as a locking portion 11A. Further, the locking plate 11 can be bent at one end to provide a pressing piece 15, and the pressing piece 15 can be pressed by the elastic body 13 and urged in the locking direction. Furthermore, the locking plate 11 can be provided with the operation portion 14 by bending the end portion. Further, the locking mechanism 9 is provided with a stopper 16, and the insertion amount for inserting the locking portion 11 </ b> A into the locking groove 30 can be specified by the stopper 16. The rotating body 4 can open an operation gap 4 c for operating the operation unit 14.

  The axle 3 can be detachably connected to the heel body 2. Furthermore, the axle 3 can also be stored by folding the protruding portions protruding on both sides of the bag main body 2.

  Furthermore, the kite of the present invention can be driven by this traveling wheel by detachably connecting the traveling wheel to the axle 3 from which the step wheel 1 has been removed.

  The kite of the present invention has a feature that it can be conveniently used by detachably connecting a step wheel for raising and lowering a step such as stairs to the kite body. In particular, the scissors of the present invention have the feature that a step wheel can be reliably attached and detached with a very simple mechanism and simple operation. This is because the kite of the present invention connects the step wheels to the axle of the kite body in a detachable manner with a unique coupling structure. The kite of the present invention has a bearing hole into which the axle is inserted at the center of the rotating body of the stepped wheel, and the axle inserted into the bearing hole is connected to the locked state by a locking mechanism. The locking mechanism includes a locking plate having a locking portion that is inserted into a locking groove provided on the outer peripheral surface of the front end portion of the axle, and the locking plate is slid in a predetermined direction by the guide portion. At the same time, the locking plate is urged in the locking direction by the elastic body. Accordingly, the step wheel can be connected to the axle in a locked state with an extremely simple structure, and can be held so as not to come off by the locking plate biased in the locking direction. Moreover, since the locking groove of the axle is formed in a ring shape along the outer peripheral surface, the step wheel can be supported so as to be able to rotate even when the locking portion is inserted into the locking groove and locked. Furthermore, since the locking mechanism has an operation part that slides the locking plate in the direction opposite to the locking direction, the locking groove between the axle and the locking part of the locking plate can be locked with a very simple operation. The state can be released and the step wheel can be removed from the axle. In this way, the scissors that can remove the step wheels from the scissors main body can be conveniently used by removing the large step wheels according to the state of use.

  Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the bag for embodying the technical idea of the present invention, and the present invention does not specify the bag as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The scissors shown in FIG. 1 to FIG. 3 are a scissors main body 2, a lower end portion of the scissors main body 2, an axle 3 that protrudes from both sides, and a pair of steps wheels that are detachably connected to the axle 3. 1. The bag of the present invention is characterized by a structure in which the step wheel 1 is detachably connected to the axle 3. Therefore, it does not specify the structure or mechanism of the bag main body or the shape of the step wheel. As the heel body and the step wheels, all those that have already been developed or will be developed in the future can be used.

  The bag main body 2 is formed into a shape having a storage portion inside. The bag main body 2 in the figure includes a main body 2A formed in a box shape and a lid 2B connected to the main body 2A so as to be opened and closed. The lid 2B is substantially rectangular, and in the figure, one side below is connected to the main body 2A so that it can be bent, and the remaining three sides are connected to the opening of the main body 2A via the chuck 20. The bag body can be easily opened and closed by opening the chuck 20. The bag body 2 is made of a metal such as aluminum or hard plastic, or is made of a soft material such as a flexible sheet. The heel body manufactured from the flexible sheet is provided with a reinforcing frame on the inner side, and the heel body can be shaped by this reinforcing frame. The bag body of this structure has the feature that it can be made lightweight. A metal plate, a plastic plate, cardboard, etc. can be used for the reinforcing frame. In the bag main body 2 shown in the figure, the main body 2A is manufactured from a flexible sheet, and the lid 2B is manufactured from metal.

  Further, the bag main body 2 shown in the figure includes a handle 21 that can be pulled upward from the upper surface. The handle 21 is connected to the heel body 2 via an extendable rod 22 so as to be extendable and contractible. The telescopic rod 22 is disposed inside the heel body 2 along the back surface (right side surface in FIG. 1) of the heel body 2. The telescopic rod 22 has a handle 21 at the upper end, and is pulled upward with the handle 21. The telescopic rod 22 includes a stopper (not shown) that holds the handle 21 at a position where the handle 21 is pulled out and stored, and has a structure capable of stopping expansion and contraction at a predetermined position. As shown in FIG. 3, the bag having this structure can be easily moved by pulling in the direction indicated by the arrow with the handle 21 pulled out. Furthermore, the bag main body 2 is also provided with a grip 23 on the upper surface for lifting the bag by hand.

  Furthermore, the bag main body 2 shown in the drawing includes a folding stand 24 on the lower surface. The saddle body 2 in the figure is provided with a folding stand 24 close to the side opposite to the side where the axle 3 is provided. The saddle body 2 shown in the drawing has the axle 3 disposed close to the back side of the lower surface, and therefore the folding stand 24 is disposed close to the front surface side of the lower surface. The folding stand 24 is formed by bending a metal rod. A folding stand 24 formed by bending a metal rod is connected to the heel body 2 so that both ends can be rotated via a support plate 25. As shown in FIG. 1, the folding stand 24 having this structure supports the heel body 2 in a self-standing state in a state where the folding stand 24 is deployed in a downward projecting posture. Furthermore, the folding stand 24 is folded and stored in the direction along the lower surface as shown in FIG.

  The axle 3 is disposed at a lower end portion of the rod main body 2 and at a corner portion between the back surface and the bottom surface of the rod main body 2. The axle 3 is, for example, a metal rod such as iron, and is disposed in a state of penetrating both side surfaces of the rod body 2 as shown in FIG. The axle 3 has a pair of stepped wheels 1 detachably connected to protruding portions on both sides. The axle 3 is provided with a ring-shaped locking groove 30 on the outer peripheral surface of the tip in order to connect the step wheels 1 with a locking structure. The ring-shaped locking groove 30 along the outer peripheral surface rotates the step wheel 1 by moving the locking groove 30 along the locking portion even when the locking portion is inserted and locked here. There is a feature that can be supported as much as possible. The axle 3 that penetrates the heel body 2 is supported so as to be able to rotate via a support member 31. The bag body 2 shown in the figure has a support member 31 fixed to the inner surface of the bottom surface. The support member 31 is a cylindrical body, and the axle 3 is inserted into the through hole, and the axle 3 is disposed at a predetermined position. The support member 31 can support the axle 3 so that it can rotate, or can fix the axle 3 so that it cannot rotate.

  The axle 3 is preferably detachably connected to the rod body 2. This scissors can be made compact by preventing both ends of the axle 3 from protruding from both sides of the scissors body 2 with the step wheel 1 removed. For example, as shown in FIG. 4, the axle 3 can be conveniently stored as a structure that can be disassembled into a plurality of pieces. The axle 3 having this structure has a structure capable of connecting the first rod 3A and the second rod 3B. The first rod 3A is provided at one end with a screw hole 3a into which the screw portion 3b of the second rod 3B is screwed. The second rod 3B is provided with a screw portion 3b that is screwed into the screw hole 3a of the first rod 3A at one end. The axle 3 is connected to each other by screwing the threaded portion 3b of the second rod 3B into the screw hole 3a of the first rod 3A. Although the axle 3 in the figure is disassembled into two, the axle can be disassembled into three or more.

  Further, the axle 3 may be configured to be foldable as shown in FIG. The axle 3 includes a main body portion 3X that is fixed to the bag main body 2 and a bent portion 3Y that is connected to the main body portion 3X so as to be bent. The axle 3 is provided with a slit groove 3x at the front end of the main body 3X, and a connecting piece 3y to be inserted into the slit groove 3x is provided at the rear end of the bent part 3Y, and is inserted into the slit groove 3x. The connecting piece 3y is connected by a pin 3z and can be rotated. A locking groove 30 is provided at the tip of the bent portion 3Y. As shown by an arrow A in the figure, the axle 3 is mounted with the step wheel 1 in a state where the bending prevention cylinder 32 is inserted and the bending portion 3Y is prevented from being bent. Further, the axle 3 has the bent portion 3Y bent upward as shown by an arrow B in the state in which the step wheel 1 and the bending prevention cylinder 32 are removed, so that It is stored in the provided axle storage portion 26. The axle housing portion 26 can be provided by connecting a flexible sheet to the side surface of the bag main body 2. The axle storage portion 26 formed of a flexible sheet can store the bent portion 3Y with a good appearance by opening the chuck 27 and inserting the bent portion 3Y of the axle 3, and closing the chuck 27.

  As shown in FIG. 6, the step wheel 1 is a rotationally symmetric position, and includes a rotating body 4 having protruding portions 4 </ b> A protruding radially in at least three directions, and tips of the protruding portions 4 </ b> A of the rotating body 4. And a wheel 5 that is rotatably connected to the section. The rotating body 4 of the step wheel 1 shown in the figure includes a protruding portion 4A that protrudes in three directions. However, as shown in FIG. 7, the step wheel 1 can project the projecting portion 4 </ b> A in four directions or project in five or more directions, although not shown. The rotating body 4 is formed of hard plastic or metal. Plastic rotating bodies have the advantage of being lightweight. The metal rotating body is made of, for example, aluminum or an aluminum alloy.

  The wheel 5 is connected so as to be able to rotate at the tip of each protrusion 4A. Each wheel 5 is connected to the protrusion 4A so as to be rotatable via a rotation shaft 6 penetrating the center. 4 A of protrusion parts arrange | position the wheel 5 between the two plates arrange | positioned in parallel, fix the both ends of the rotating shaft 6 to the protrusion part 4A, and connect so that the wheel 5 can be rotated. . The wheel 5 is made of plastic or natural rubber which can be deformed to some extent as a whole or the outer periphery. The wheel 5 whose outer peripheral portion is made of plastic or natural rubber is made of a metal such as aluminum or a hard plastic at the central portion.

  As shown in FIGS. 8 to 12, the rotating body 4 has a bearing portion 7 that rotatably supports the axle 3 at the center. The bearing portion 7 includes a bearing hole 8 into which the tip end portion of the axle 3 is inserted, and a locking mechanism 9 that connects the axle 3 inserted into the bearing hole 8 with a locking structure. The bearing hole 8 is opened to an inner diameter substantially equal to the outer diameter of the axle 3 so that the axle 3 can be inserted and rotated smoothly. Furthermore, the bearing hole 8 can be surface-treated so that the resistance of the inner surface becomes small, and the rotating body 4 can be smoothly rotated. In the illustrated bearing hole 8, the opening end into which the axle 3 is inserted is formed into a tapered shape that gradually becomes wider toward the opening edge. This shape of the bearing hole 8 has the feature that the axle 3 can be inserted smoothly.

  The rotating body 4 shown in the drawing has a holding cylinder 10, which is a separate member from the rotating body 4, fixed at the center as a bearing portion 7. The holding cylinder 10 is made of metal such as aluminum or aluminum alloy, or hard plastic. The holding cylinder 10 is opened around a bearing hole 8 into which the axle 3 is inserted. The holding cylinder 10 in the figure is provided with a through hole penetrating in the axial direction to form a bearing hole 8. The holding cylinder 10 is provided with a flange portion 10B at one end of a cylinder portion 10A through which the axle 3 is inserted, and a locking mechanism 9 is disposed on the flange portion 10B. 10 A of cylinder parts shape the bearing hole 8 in the taper shape in the insertion end part in which the axle shaft 3 is inserted. The holding cylinder 10, which is a separate member from the rotating body 4, is disposed and fixed in a through portion 4 a provided at the center of the rotating body 4 as shown in the figure. The through portion 4a shown in the figure has a step portion 4b that abuts the flange portion 10B of the holding cylinder 10 on the insertion side. The holding cylinder 10 is disposed at a predetermined position with the flange portion 10B abutting against the stepped portion 4b. Further, the holding cylinder 10 inserted into the penetration part 4a is fixed so that the tip part 10a protruding from the penetration part 4a extends along the opening edge so as not to come out of the penetration part 4a. The metal holding cylinder 10 can be fixed so that the tip end portion 10a is not caulked. The holding cylinder 10 made of plastic can be fixed so that the distal end portion 10a is thermally deformed so as not to come off. Furthermore, the holding cylinder 10 can also shape the opening of the bearing hole 8 in a tapered shape in this step. That is, the opening portion of the bearing hole 8 can be formed while being deformed so as not to pass through the tip portion 10a of the holding cylinder 10 disposed in the through portion 4a. However, the rotating body can open the bearing hole directly in the center without providing a holding cylinder, as will be described later.

  The locking mechanism 9 includes a locking plate 11 that slides in a direction perpendicular to the axle 3 to lock the axle 3, a guide portion 12 that slides the locking plate 11 in a predetermined direction, and a locking plate 11. An elastic body 13 that biases in the locking direction and an operation unit 14 for releasing the locking state by sliding the locking plate 11 in the direction opposite to the locking direction are provided.

  The locking plate 11 is a metal plate and is disposed on the bearing portion 7 so as to be slidable in a direction perpendicular to the axle 3. The locking plate 11 has a locking portion 11 </ b> A that is inserted into the locking groove 30 of the axle 3 inserted through the bearing hole 8 and locks the axle 3. The illustrated locking plate 11 has a through-hole 11B that allows the axle 3 to pass therethrough, and an opening edge of the through-hole 11B serves as a locking portion 11A. The locking portion 11 </ b> A is formed thinner than the width of the locking groove 30 so that it can be inserted into the locking groove 30 of the axle 3. In other words, the width of the locking groove 30 of the axle 3 is made slightly larger than the thickness of the locking portion 11A. The through hole 11 </ b> B of the locking plate 11 is disposed at a position facing the bearing hole 8. The through hole 11 </ b> B shown in FIG. 10 is oval and has a short diameter substantially equal to the inner diameter of the bearing hole 8. However, the through hole may be oval, circular or polygonal.

  The guide part 12 is provided in the collar part 10B, guides the locking plate 11, and slides the locking plate 11 in a specific direction. The guide portion 12 shown in the figure is a guide groove provided along both side portions of the locking plate 11. The guide grooves are provided along both sides of the bearing hole 8 in a direction perpendicular to the bearing hole 8. As shown in FIGS. 9 and 10, the guide groove guides both sides of the locking plate 11 and slides the locking plate 11 in a predetermined direction.

  The elastic body 13 biases the locking plate 11 in the locking direction. The locking plate 11 shown in the drawing is provided with a pressing piece 15 by bending one end protruding from the flange portion 10B toward the cylindrical portion 10A, and pressing the pressing piece 15 with the elastic body 13 to lock the locking plate 11. Is biased in the locking direction. The elastic body 13 is a push spring and is disposed between the pressing piece 15 and the side surface of the holding cylinder 10 and presses the locking plate 11 in the direction indicated by the arrow A in the drawing. The pressing piece 15 is provided with a positioning protrusion 15A for holding the elastic body 13 as a pressing spring so as to protrude inward. This structure has an advantage that the elastic body 13 can be disposed in a space-saving manner. The locking plate 11 is urged in the direction indicated by the arrow A by the elastic body 13 and slides in this direction, and the opening of the through hole 11B of the locking plate 11 is formed at a portion where the bearing hole 8 and the locking plate 11 intersect. The locking portion 11 </ b> A that is an edge is protruded inside the bearing hole 8. As shown in FIG. 11, the locking portion 11 </ b> A protruding inside the bearing hole 8 is inserted into the locking groove 30 of the axle 3, and the axle 3 is locked to the bearing portion 7.

  Further, the locking mechanism 9 includes a stopper 16 that specifies an amount by which the locking portion 11 </ b> A protrudes inside the bearing hole 8 at the end opposite to the pressing piece 15. In the illustrated locking mechanism 9, the other end of the locking plate 11 protruding from the flange portion 10 </ b> B is bent toward the cylindrical portion 10 </ b> A, and this bent piece is used as a stopper 16. The stopper 16, which is a bent piece, abuts against the side surface of the holding cylinder 10 and stops the sliding of the locking plate 11 when the locking plate 11 slides in the locking direction. The stopper 16 has a very simple structure, and can specify the protruding amount of the locking portion 11 </ b> A, that is, the amount of insertion of the locking portion 11 </ b> A into the locking groove 30 of the axle 3. The locking portion 11A of the locking plate 11 cannot securely lock the axle 3 if the amount of insertion into the locking groove 30 is small. On the other hand, if the amount of insertion into the locking groove 30 is too large, the tip of the locking portion 11A presses the bottom of the locking groove 30, and the frictional resistance during rotation increases. Accordingly, the protruding amount of the locking portion 11A can be reliably locked to the axle 3, but is designed to be slightly smaller than the depth of the locking groove 30 so as not to contact the bottom of the locking groove 30, for example. .

  The operation unit 14 is operated when releasing the locking state of the locking mechanism 9. The operation unit 14 releases the locked state by sliding the locking plate 11 in the direction opposite to the locking direction. The locking plate 11 is always urged by the elastic body 13 in the direction indicated by the arrow A in FIG. When the operating portion 14 is operated and the locking plate 11 is slid in the direction opposite to the locking direction as indicated by an arrow B in FIG. 12, the locking portion 11A is pulled out from the locking groove 30 and is engaged. The stop state is released. The illustrated operation portion 14 is a bent portion of the pressing piece 15 provided on the locking plate 11. The locking plate 11 can be provided with the operating portion 14 while bending one end and providing the pressing piece 15. However, the locking plate 11 can also be bent to the opening side to provide the operation portion 14 as shown by a chain line in FIG. For example, the operation unit 14 is pushed by a finger to slide the locking plate 11. The rotating body 4 shown in the drawing is provided with an operation gap 4c that is a recess so that the operation unit 14 does not protrude from the surface, and the operation unit 14 is disposed here. The operation gap 4c is provided in communication with the penetrating portion 4a. A finger is inserted into the operation gap 4c, which is a recess, and the operation unit 14 is operated. Thus, the operation part 14 which does not protrude from the surface is not operated unexpectedly during use and can be used safely.

  Furthermore, the rotating body 4 shown in FIGS. 6, 8, and 9 has a cap 17 fixed to the opening of the penetrating portion 4a. The structure in which the cap 17 is disposed in this portion can effectively prevent dust and dust from entering the through portion 4a and allow the locking mechanism 9 to function normally.

The step wheel 1 including the locking mechanism 9 having the above structure is attached to and detached from the axle 3 of the rod body 2 as follows.
[When the step wheel 1 is connected to the axle 3 and mounted]
The bearing hole 8 of the step wheel 1 is inserted through the tip of the axle 3 protruding from the main body 2. As shown in FIG. 8, the front end portion of the axle 3 is inserted into the bearing hole 8 and passed through the through hole 11 </ b> B of the locking plate 11. Since the axle 3 shown in the figure has a slide surface 33 made of an inclined surface or a curved surface at the end on the tip side from the locking groove 30, the tip of the locking portion 11A is pushed by pushing the axle 3 strongly. It can be inserted by sliding on the slide surface 33 while retracting the locking portion 11A. However, when the axle 3 is inserted, the operation portion 14 can be operated so that the locking portion 11A does not protrude into the bearing hole 8. As shown in FIG. 11, the locking portion 11 </ b> A is guided by the locking groove 30 of the axle 3 that penetrates the locking plate 11, and the step wheel 1 is connected to the axle 3 so as not to come off.

[When removing the step wheel 1 from the axle 3]
As shown in FIG. 12, the operating portion 14 is operated to slide the locking plate 11 in the direction opposite to the locking direction. The locking portion 11A of the locking plate 11 is retracted, and the locking state between the locking groove 30 of the axle 3 and the locking portion 11A of the locking plate 11 is released. In this state, the step wheel 1 is removed from the axle 3.

  The rotating body 4 described above is provided with the bearing portion 7 by fixing the holding cylinder 10 formed by opening the bearing hole 8 to the center portion. However, as shown in FIG. 13 and FIG. 14, the rotating body can directly open the bearing hole in the central portion without providing the holding cylinder. This rotating body 4 has a through hole provided in the center as a bearing hole 8, a recess 4 d is provided at one open end of the bearing hole 8, and a locking mechanism 9 is disposed in the recess 4 d. . The locking mechanism 9 shown in this figure has a structure in which a leading edge is inserted into the locking groove 30 of the axle 3 as a locking portion 11A without providing a through hole in the locking plate 11. Further, the locking mechanism 9 has a slit hole 12A opened in the locking plate 11, and guide pins 12B and 12C are disposed in the slit hole 12A. The slit hole 12A extends along the guide pins 12B and 12C. The guide portion 12 is made to move and slide the locking plate 11 in a predetermined direction. In the locking mechanism 9 shown in this figure, the guide pins 12B and 12C are set screws inserted into the slit holes 12A. Further, the guide pin 12C located on the left side in the drawing is used in combination with the stopper 16 for adjusting the protruding amount of the locking portion 11A. The guide pin 12C comes into contact with the opening edge (left end edge in the figure) of the slit hole 12A and stops the sliding of the locking plate 11. The locking plate 11 is provided with a pressing piece 15 and an operation portion 14 by bending the end opposite to the locking portion 11A to the opening side. The operation portion 14 is disposed in an operation gap 4c provided in communication with the recess 4d. Further, a push spring that is an elastic body 13 is disposed between the bent piece that is the operation portion 14 and the inner surface of the operation gap 4c, and the elastic body 13 biases the locking plate 11 in the locking direction. doing.

  Further, in the above embodiment, the bearing hole 8 is a through hole, and the front end portion protruding from the opposite side is locked by the locking mechanism 9 through the axle 3 inserted into the bearing hole 8. However, the bearing hole does not necessarily have to be a through hole. As shown in FIG. 15, as shown in FIG. 15, an opening can be provided only on one side, and a locking mechanism 9 can be provided in the middle of the bearing hole 8. . The locking mechanism 9 opens a through slit 17 that passes through an intermediate portion of the holding cylinder 10, and the locking plate 11 is disposed in the through slit 17. The locking mechanism 9 slides the locking plate 11 using the inner peripheral surface of the through slit 17 as a guide portion 12. One end (upper side in the figure) of the locking plate 11 is bent to both the opening side and the bottom side (left and right direction in the figure) of the operation gap 4c to provide an operation part 14 and a pressing piece 15. The other end of the locking plate 11 is bent as a stopper 16. This structure can be a structure that does not expose the locking mechanism without providing a cap.

  Furthermore, the kite of the present invention can be driven by this traveling wheel by detachably connecting a traveling wheel (not shown) to the axle 3 from which the step wheel 1 has been removed. The traveling wheel is a single wheel having an outer diameter smaller than that of the step wheel. This traveling wheel is provided with the above-described bearing hole and locking mechanism in the central portion, and is detachably connected to the axle in the same manner as the stepping wheel. When the eaves of this structure do not move up and down steps such as stairs, the eaves can be used by removing the steps and attaching the running wheels to reduce the overall shape of the eaves.

It is a side view of the bag concerning one example of the present invention. It is a front view of the bag shown in FIG. It is a side view which shows the state which makes the heel shown in FIG. 1 drive. It is a partial section exploded side view showing an example of an axle. It is a perspective view which shows another example of an axle. It is a front view which shows an example of the wheel for level | step differences It is a front view which shows another example of the wheel for level | step differences. It is an expanded sectional view of the bearing part of the wheel for level | step differences, Comprising: It is a figure corresponded in the AA cross section of FIG. It is an expanded sectional view of the bearing part of the wheel for level | step differences, Comprising: It is a figure corresponded in the BB sectional view of FIG. It is a front view which shows the latching mechanism of the wheel for steps shown in FIG. It is an expanded sectional view which shows the latching state of the latching mechanism of the level | step difference wheel shown in FIG. It is an expanded sectional view which shows the state which the latching mechanism of the level | step difference wheel shown in FIG. 11 cancels | releases a latching state. It is an expanded sectional view which shows another example of the bearing part of the wheel for level | step differences. It is AA sectional view taken on the line of the bearing part shown in FIG. It is an expanded sectional view which shows another example of the bearing part of the wheel for level | step differences.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wheel for level | step difference 2 ... Rod main body 2A ... Main-body part 2B ... Cover part 3 ... Axle 3A ... 1st rod 3B ... 2nd rod
3a ... Screw hole 3b ... Screw part
3X ... Body part 3Y ... Bent part
3x ... Slit groove 3y ... Connecting piece
3z ... Pin 4 ... Rotating body 4A ... Projection
4a ... Penetration part 4b ... Step part
4c ... Operation gap 4d ... Recess 5 ... Wheel 6 ... Rotating shaft 7 ... Bearing part 8 ... Bearing hole 9 ... Locking mechanism 10 ... Holding cylinder 10A ... Cylinder part 10B ... Hut
DESCRIPTION OF SYMBOLS 10a ... Tip part 11 ... Locking plate 11A ... Locking part 11B ... Through-hole 12 ... Guide part 12A ... Slit hole 12B ... Guide pin
12C ... guide pin 13 ... elastic body 14 ... operation part 15 ... pressing piece 15A ... positioning convex part 16 ... stopper 17 ... cap 18 ... through slit 20 ... chuck 21 ... handle 22 ... expandable rod 23 ... grip 24 ... folding stand 25 ... Support plate 26 ... Axle housing portion 27 ... Chuck 30 ... Locking groove 31 ... Support member 32 ... Bending prevention cylinder 33 ... Slide surface

Claims (12)

段 差 A step wheel (1) is connected to both sides of the lower end of the main body (2) via an axle (3). In the trap
The step wheel (1) is a rotationally symmetric position, and includes a rotating body (4) having projecting portions (4A) projecting radially in at least three directions, and each projecting portion (4A) of the rotating body (4). ) And a wheel (5) rotatably connected to the tip of the
The step wheel (1) is detachably connected to the axle (3) with the following connection structure.
(A) The rotating body (4) is connected at its center to the bearing hole (8) for inserting the tip of the axle (3) and the axle (3) to be inserted into the bearing hole (8) with a locking structure. And a locking mechanism (9).
(B) The locking mechanism (9) includes a locking plate (11) that slides in a direction perpendicular to the axle (3) to lock the axle (3), and the locking plate (11) in a predetermined direction. The guide part (12) to be slid, the elastic body (13) that urges the locking plate (11) in the locking direction, and the locking plate (11) is slid in the direction opposite to the locking direction and locked. And an operation unit (14) for releasing the state.
(C) The axle (3) is provided with a ring-shaped locking groove (30) on the outer peripheral surface of the tip.
(D) The locking plate (11) has a locking portion (11A) that is inserted into the locking groove (30) and locks the axle (3).
(E) With the axle (3) inserted into the bearing hole (8) of the rotating body (4), the locking portion (11A) of the locking plate (11) is inserted into the locking groove (30) of the axle (3). The step wheel (1) is connected to the axle (3) in a locked state.
(F) By operating the operation portion (14), the step is released in a state where the engagement state between the engagement groove (30) of the axle (3) and the engagement portion (11A) of the engagement plate (11) is released. The wheel (1) is removed from the axle (3).   The rod according to claim 1, wherein a holding cylinder (10) is connected and fixed to the center of the rotating body (4), and a bearing hole (8) is opened in the holding cylinder (10).   The flange according to claim 1 or 2, wherein the bearing hole (8) is formed so that an opening end portion into which the axle shaft (3) is inserted is formed into a taper shape gradually widening toward the opening edge.   The rod according to claim 1, wherein the axle (3) is provided with a slide surface (33) made of an inclined surface or a curved surface at an end portion on a tip side from the locking groove (30).   The locking plate (11) has a through hole (11B) that allows the axle (3) to pass therethrough, and an opening edge of the through hole (11B) serves as a locking portion (11A).鞄 to be done.   The locking plate (11) is bent at one end to provide a pressing piece (15) .The pressing piece (15) is pressed by the elastic body (13) to lock the locking plate (11) in the locking direction. The bag according to claim 1, wherein the bag is biased.   The hook according to claim 1, wherein the locking plate (11) is provided with an operating portion (14) by bending the end thereof.   The hook according to claim 1, wherein the locking mechanism (9) includes a stopper (16) for specifying an insertion amount for inserting the locking portion (11A) into the locking groove (30).   The rod according to claim 1, wherein the rotating body (4) has an operation gap (4c) for operating the operation section (14).   The rod according to claim 1, wherein the axle (3) is detachably connected to the rod body (2).   The scissors according to claim 1, wherein the projecting portions of the axle (3) projecting on both sides of the scissors main body (2) are folded and stored.   The eaves according to claim 1, wherein the traveling wheel is detachably connected to the axle (3) from which the step wheel (1) is removed, and the vehicle travels with the traveling wheel.

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