JP3631421B2 - Elastic telescopic rod - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elastic telescopic rod, and more particularly, is attached to a place where various nails such as a tension rod, an iron round nail and a screw nail for preventing the furniture from falling down in the event of an earthquake or the like cannot be used or It is suitably used for curtain rods, curtain poles, curtain rails, tension poles, cloth towels, towel racks, etc. that do not require the use of various nails (these may be collectively referred to as curtain rods). Related to elastic elastic rods.
[0002]
[Prior art, problems to be solved by the invention]
Conventionally, in order to prevent the furniture such as cupboards, Japanese bowls, clothes baskets, organizers, cabinets and bookshelves from falling over in the event of an earthquake, etc., between these furniture and each of the ceiling boards and walls. So-called tension rods that are inserted and expanded and contracted by the action of ridges to absorb vibrations such as earthquakes are widely used.
[0003]
However, the conventionally used tension rod has an outer cylinder in which a coil spring is accommodated, and an inner cylinder that can slide in the major axis direction of the outer cylinder in the outer cylinder, One end of the coil spring is fixed to the bottom of the outer cylinder (this end is hereinafter referred to as a fixed end), and the other end (hereinafter referred to as a free end) is wound around the coil spring in the outer cylinder of the inner cylinder. The inner cylinder is engaged with the end, and by rotating the inner cylinder, the inner cylinder is rotated along the winding of the coil spring, and the inner cylinder is reciprocated in the major axis direction of the outer cylinder. Thus, the adjustment of the effective length of the coil spring and the free length of the tension bar are performed by rotating the inner cylinder. The effective length of the coil spring is the length from the fixed end of the coil spring to the point where it is engaged with the outer cylinder. The effective force of the coil spring changes as the length of the effective length of the coil spring is changed. Change. The free length of the tension rod is the total length of the tension rod from the bottom of the outer cylinder to which the coil spring is fixed when not in use to the end of the inner cylinder outside the outer cylinder. Therefore, such a conventionally used tension rod requires a long time to adjust the length of the free length, and is applied because the free length is limited by the length of the coil spring. The range was narrow, and the tension of the tension rod changed with the change in its free length, so the ability to absorb vibrations such as earthquakes could not be made constant.
[0004]
In addition, curtain rods are fitted between two fixed objects such as between two pillars, between opposite wall surfaces, between opposite walls, and between opposite window frames in a tiled bathroom, kitchen, and indoors. Conventionally, however, the curtain rods are fixed to the surfaces of two fixed objects at both ends with various nails such as iron round nails and screw nails and an adhesive.
[0005]
However, the curtain rods and the like fixed in this way must have the length exactly equal to the size of the interval between the two fixed objects. Due to changes in the length of the curtain rods due to expansion and contraction due to temperature changes and / or the size of the gap between the two fixed objects, or due to earthquakes, long-term distortion of the house, etc. The sticking part is removed, or the curtain rods themselves are bent and become unusable.
[0006]
Also, if the two fixed objects to which the curtain rods are fixed are tiled like a bathroom, they cannot be fixed with nails and must be fixed with an adhesive. The nails are easy to come off when they are fixed to the surface, and therefore must be fixed with an adhesive. When the adhesive is fixed in this manner, the adhesive adheres after the curtain rods are removed, or the coated wall becomes unsightly due to peeling.
[0007]
Furthermore, when the two fixed objects are two pillars such as a guest room and a living room, and opposite fences and opposing window frames, the curtain rods are usually fixed with nails, but are fixed. If the curtain rods are removed, traces such as holes in the nails will remain and become unsightly. Furthermore, the curtain rods fixed in this way are used semi-permanently, and such curtain rods are not suitable for temporary fixation. For these reasons, conventional curtain rods have been limited in their application and use range.
[0008]
The inventors have taken a long time to adjust the length of a conventional tension rod, and the ability to absorb vibrations such as earthquakes by changing the pressing force corresponding to the change in the length. This eliminates the disadvantage of not being able to make it constant, shortens the time required to adjust the length, and even if the length changes, the pressing force does not change. In order to provide elastic rods that can be used for curtain rods that are easy to put on and take off, and there are no restrictions on the use and range of use, etc. As a result, the present invention has been achieved.
[0009]
[Means for Solving the Problems]
That is, the present invention has an outer cylinder and an inner cylinder fitted into the outer cylinder, and the inner end of the inner cylinder is engaged with the inner end so as to be movable in the major axis direction. It has a central pillar, and a frame is in the middle of the central pillar.So that it can be stopped in place.The central pillar is provided with a ridge between the housing and the inner end of the inner cylinder, a screw is engraved on the opposite side of the central pillar to which the ridge is attached, and the central pillar A fixed clamping body and a floating clamping body screwed together with the screw are provided on the side on which the screw of the central pillar is engraved, and is sandwiched between the stationary clamping body and the floating clamping body.SplitHaving a pressing body,The frame is a frame provided on a central column concentrically with the central column, the fixed clamping body is inserted through the central column, and the outer peripheral surfaces of the fixed clamping body and the floating clamping body are respectively The inclined angle of the inclined surface, which is the outer peripheral surface of each of the fixed sandwiching body and the floating sandwiching body, is an acute angle, and the divided pressing body is centered on a through-hole whose diameter is reduced in the middle part. A cylindrical body that is drilled and the inner peripheral surface of the through-hole is inclined in two directions is divided in the long axis direction, and the divided pressing body is an inclination angle of the inclined surface of the inner peripheral surface of the through-hole Is substantially equal to or smaller than the inclination angle of the slope which is the outer peripheral surface of each of the fixed sandwiching body and the floating sandwiching body in contact with the slope,The floating clamping body is reciprocated in the major axis direction in the outer cylinder as the inner cylinder rotates.The leading ends of the floating sandwiching body and the fixed sandwiching body are inserted between the through holes of the divided pressing body and the peripheral surface of the central column,Along with the reciprocation of the movable sandwiching body,SplitAn elastic telescopic rod characterized in that the pressing body is reciprocated in the radial direction of the cross section of the outer cylinder.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The elastic telescopic rod of the present invention has an inner cylinder and an outer cylinder. Therefore, the outer diameter of the inner cylinder is slightly smaller than the inner diameter of the outer cylinder, and the inner cylinder is slidably fitted into the outer cylinder. The material of the outer cylinder and the inner cylinder is not particularly limited as long as it has a predetermined mechanical strength, and is usually made of metal, but does not prevent it from being made of synthetic resin. . Moreover, as for the outer cylinder and the inner cylinder, as for all, the outer peripheral surface may be painted or may be coat | covered with the synthetic resin film, or patterns, such as a grain, may be printed. When the outer cylinder is made of synthetic resin, it may be opaque or transparent.
[0011]
The tip of the inner cylinder in the outer cylinder (hereinafter referred to as the inner end)Can move in the long axis directionThe central pillars are connected in series. The central column is provided with a frame in the middle. The center column is provided with a ridge between a portion where the end portion is engaged with the inner end of the inner cylinder (hereinafter referred to as an engagement portion) and the housing.
[0012]
In the present invention, the striation is defined as an elastic body that can expand and contract in the major axis direction of the outer cylinder. Coil springs, conical coil springs, spiral springs, leaf springs, and the like can be used as the striations, but coil springs are the most preferable among them. The coil spring is preferably of a grinding closed end, a taper closed end, a grinding open end or a taper open end, but is of a non-grinding closed end, a non-grinding open end, a non-grinding tangent tail end or a non-grinding big tail end. May be. These coil springs are listed in JIS (Japanese Industrial Standard) B103-69. The leaf spring can also be used in parallel or perpendicular to the long axis of the outer cylinder. The coil spring is mounted in the outer cylinder with the center column inserted through the center hole.
[0013]
The frame is not particularly limited as long as it can support the ridges attached to the central column, but the central column is provided concentrically with the central column.ing. The casing is usually a circular plate, a regular polygonal plate, or the like, but is a plurality of protrusions that are radially projected from the outer peripheral surface of the central column on the same plane in the radial direction. May be. Note that the central angles of the plurality of protrusions are usually equal to each other. The diameter of the housing or the length of the longest diagonal (the longest of the distance between the diagonal and the apex and its opposite side, the same shall apply hereinafter) is substantially equal to or slightly smaller than the inner diameter of the outer cylinder. Preferably it is. Further, the housing is provided so as to be stopped at a predetermined position of the central pillar, but it may be fixed to the central pillar or integrated with the central pillar, and the latter is preferable.
[0014]
Due to the engagement between the center column and the inner end of the inner cylinder, the center column is rotated in conjunction with the rotation of the inner cylinder. In addition, after the central pillar is fixed, the ridge is compressed and restored by reciprocating movement of the inner cylinder in the long axis direction. Means of engagement between the central column and the inner end of the inner cylinder
There is no particular limitation as long as the center column can be connected to the inner end of the inner cylinder so as to interlock with the rotation of the inner cylinder. An elongated through hole is drilled on the diameter of at least the engaging portion of the column, and on the other hand, a through hole is also drilled on the diameter of the inner end of the inner cylinder. It is preferable that a pin can be inserted into and engaged with a through hole formed in the inner end of the inner cylinder. Further, a bottom plate may be provided at the inner end of the inner cylinder, and the tip of the central column may be fixed to the bottom plate or may be drilled in the bottom plate and the tip of the central column may be inserted into the central hole, and this may be used as an engagement means. it can. Further, the inner cylinder and the central column can be connected via the engagement cylinder.
[0015]
The opposite side of the central pillar body on which the ridge is mounted is a screw portion in which a male screw is engraved, and a fixed clamping body is provided on the screw portion of the central column.Is inserted, Idle pinchingBody screwedI'm hurt. The fixed sandwiching body and the floating sandwiching body are conical trapezoids that are opposite to each other and have a through hole in the center.Is. In addition, the lower part (part which touches a lower bottom) of the truncated cone may be made into a column shape.
[0016]
A through hole having a diameter larger than the outer diameter of the male screw engraved in the screw portion of the central column is formed in the fixed clamping body, and the central column is inserted into the through hole. .
[0017]
The floating sandwiching body is formed with a through hole having a female screw engraved with a male screw engraved on a screw portion of the central column at the center thereof. The loose nipping body is reciprocated in the major axis direction of the central column by rotating the central column in conjunction with the inner cylinder.
[0018]
Both the fixed and floating clamps have slanted outer peripheral surfaces.TheThe slope angle of this slope is defined as the angle formed between the generatrix of the slope and the major axis direction of the central column.TheIn addition, this slope may be bent outward or inward with a small curvature.
[0019]
In the central column, when the floating pinching body is provided below the fixed pinching body (the opposite side is the same on the opposite side of the splay), the central column is rotated to place the floating pinching body in the longitudinal direction of the central column. It is preferable to provide a stopper at the lower end portion of the central column in order to prevent the floating nipping body from falling off from the lower end of the central column when reciprocally moving.
[0020]
The stopper is a protrusion fixed to the outer peripheral surface or the edge of the lower end portion of the central column or preferably provided integrally. The protrusion has a length from the outer tip to the center of the central column larger than the radius of the central column. Although the number of protrusions is plural, usually two or three are preferable. Moreover, it is preferable that the center angle of several protrusions is made equal. The protrusion is preferably flexible. Further, it is preferable that the protrusion bend with its outer tip directed upward. Moreover, it does not prevent that it becomes a plate body, such as a disk, as a stopper instead of the said protrusion.
[0021]
By both fixed and floating clampsSplitThe pressing body is clamped.SplitPressing bodyIsA cross section of the outer cylinder (perpendicular to the long axis) in a space formed by the outer peripheral surface of the fixed clamping body, the outer peripheral surface of the floating clamping body, and the inner peripheral surface of the outer cylinder (this space may also be referred to as a clamping space). A plurality of cross-sections are connected to each other radially, orTo each otherIndependent and arrangedTheThe plurality of divided pressing bodies can be connected, for example, by connecting the plurality of divided pressing bodies with a strap or the like. Fixed clamping body whose outer peripheral surface is inclined andPlayDynamic holding bodyEach ofThe front end portion of this is interposed in a wedge shape between the divided pressing body and the outer peripheral surface of the screw portion of the central column.
[0022]
The divided pressing body sandwiched between the fixed sandwiching body and the floating sandwiching body only needs to move on the radius of the cross section of the outer cylinder in accordance with the movement of the floating sandwiching body in the long axis direction. Split pressbodyHas an outer diameter smaller than the inner diameter of the outer cylinder in the clamping space, and is shorter than the length of the clamping space.,DuringA through-hole with a reduced diameter is formed in the center, and a cylindrical body whose inner peripheral surface is inclined in two directions is divided in the long axis direction.ing.
[0023]
Moreover, it is preferable to provide many small unevenness | corrugations, a protrusion, or a groove | channel on the outer peripheral surface of a division | segmentation press body in order to enlarge frictional resistance. In addition, MinutesThe inclination angle of the inclined surface of the through-hole in the split pressing body is substantially equal to or smaller than the inclination angle of each of the inclined surfaces of the fixed holding body and the floating holding body that are brought into contact with the inclined surface of the divided pressing body.ButBeing substantially equalPreferGood.
[0024]
As described above, the divided pressing bodies may be independent from each other, or may be connected to each other by, for example, a strap.Divided pressing bodyIn the cylindrical body, when the cylindrical body is divided in the major axis direction by a cut line, a part of the peripheral wall of the cylindrical body is left, and the remaining part of the peripheral wallMinutesIt can be set as the strap which connects the some split pressing body. The remaining part of the cylindrical body is preferably an edge, but may be an intermediate part.Yes.
[0025]
PlayThe moving clamp must not rotate with the central pillar. For this purpose, in use, the fixed clamping body provided in contact with the central column housing is always in contact with the divided pressing body, and the divided pressing body is in contact with the floating clamping body. The central column housing, the fixed clamping body, the divided pressing body, and the floating clamping body that are brought into contact with each other rotate together with the central column as the central pillar rotates by the frictional resistance. Without being reciprocated in the direction of the long axis of the central column.Further, the floating holding body can be reciprocated without being brought into contact with the fixed holding body via the divided pressing body. In this case as well, a structure for preventing co-rotation with the central pillar of the floating sandwiching body must be exercised.
[0026]
When rotating the central pillar to reciprocate the floating clamp body in the longitudinal direction of the central pillar, in order to further prevent the floating clamp body from rotating together with the central pillar, It is preferable to project radially on the outer peripheral surface of the body a flexible projecting piece that makes its tip end abut against the inner peripheral surface of the outer cylinder. Therefore, the length of the protruding piece is made larger than the size of the gap between the outer peripheral surface of the floating sandwiching body and the inner peripheral surface of the outer cylinder. The number of protruding pieces is 2 or more, preferably about 2 to 6, particularly preferably about 3 to 4. In addition, the central angles of the protruding pieces are usually made equal. Further, the protruding piece may be provided integrally with the floating holding body.Yes.
[0027]
InsideThe opening of the outer edge of each of the cylinder and the outer cylinder (hereinafter referred to as the “external edge”) is normally closed, but does not prevent the opening. A cap is preferably used for the closure. The shape of the cap is not particularly limited, but is usually a bottomed cylinder or a bottomed hollow truncated cone. Since the stability at the time of mounting is large, it is preferable to use a hollow truncated cone with a bottom. Further, it is preferable that the bottom surface of the cap is provided with a large number of small irregularities or grooves or protrusions in order to increase the friction coefficient.
[0028]
A gap between the inner peripheral surface of the outer cylinder and the outer peripheral surface of the inner cylinder at the inner end edge of the outer cylinder (the same applies to the edge opposite to the outer edge) is closed by a joint. The material of the cap and the joint is not particularly limited, but is usually made of a synthetic resin. In the elastic telescopic rod of the present invention, a plurality of elastic telescopic rods are connected by bringing the outer edges of the inner cylinder, the outer edges of the outer cylinder, or the outer edges of the inner cylinder and the outer cylinder into contact with each other. It can be shown.
[0029]
The elastic telescopic rod of the present invention in which a divided pressing body is used as the pressing body is as follows: (1) The distance between furniture such as a cupboard and a Japanese bowl and a ceiling plate or wall, and between two columns, between opposing wall surfaces, Spacing between two fixed objects, such as between facing walls and between facing window frames, etc. (space between furniture such as cupboards and Japanese bowls and ceiling plates or walls, between two pillars, between facing walls The distance between the two fixed objects such as the gap between the opposite ridges and the opposite window frames is generically referred to as the “face-to-face gap”), so that the length of the elastic telescopic rod is longer than the size An inner cylinder of an elastic telescopic rod whose outer peripheral surface is separated from an inner peripheral surface of the outer cylinder and whose central column is in a free state (an elastic telescopic bar in which the inner cylinder is slidable in the outer cylinder). Adjust the length of the elastic telescopic rod by sliding in the outer cylinder and reciprocating in the long axis direction. To, a size longer predetermined length than of face-to-face distance.
[0030]
By changing the size of the difference between the length of the elastic telescopic rod adjusted to a predetermined length in the free state and the facing distance, the amount of pressing of the elastic telescopic rod can be changed. For example, as the difference is increased, the pressing force of the elastic telescopic rod is increased. (2) The elastic telescopic rod adjusted to a predetermined length rotates its inner cylinder and interlocks with this to rotate the central column, thereby bringing the floating sandwiching body closer to the stationary sandwiching body.
[0031]
(3) The distal end portion of the floating sandwiching body and / or the distal end portion of the stationary sandwiching body interposed in a wedge shape between the divided pressing body and the outer peripheral surface of the central column are sequentially pushed in to increase their thickness. The divided pressing body is moved radially outward on the cross section of the outer cylinder, the outer peripheral surface of the divided pressing body is brought into close contact with the inner peripheral surface of the outer cylinder and stopped, and the central column is in the outer cylinder The elastic telescopic rod is fixed to the fixed state (the state in which the inner cylinder is fixed in the outer cylinder, and so on).
[0032]
(4) Against the elasticity of the streak, the inner cylinder is further pushed into the outer cylinder so that the length of the elastic elastic rod in the fixed state is shorter than the size of the facing distance, and the shortened elastic elastic rod is Fit between furniture and two fixed objects such as ceiling boards or walls and pillars, then release the inner cylinder from the push-in and place the bottom of each cap of the inner cylinder and outer cylinder on the furniture and The mounting of the elastic telescopic bar is completed by bringing it into contact with the surfaces of two fixed objects such as a ceiling plate or wall and a pillar. At this time, the streak is compressed, and the attached state of the elastic telescopic rod is maintained by its elasticity. Moreover, when this elastic telescopic bar is used as a tension bar, the vibration of the earthquake is absorbed by the ridge. When this elastic expansion / contraction bar is used as a curtain pole, the change in the size of the face-to-face spacing due to the temperature change and the distortion of the house over a long period of time is absorbed by the expansion and contraction of the ridge.
[0033]
In this way, the elastic telescopic rod of the present invention mounted between the furniture and the ceiling board or wall and between the two fixed objects, for example, is (1) the elasticity of the striations Against this, the inner cylinder is pushed into the outer cylinder, its length is shortened and removed. In the removed elastic telescopic rod, the once-compressed ridge is restored. (2) The removed elastic telescopic rod has its inner cylinder rotated in the opposite direction to the above, so that the floating sandwiching body is separated from the fixed sandwiching body, the sandwiching space is expanded, and the divided pressing body is The outer peripheral surface is separated from the inner peripheral surface of the outer cylinder, the central column is released from its fixed state, and the elastic telescopic rod is brought into a free state.The
[0034]
[FruitExample]
The elastic telescopic bar of the present invention will be described more specifically with reference to the examples shown in the drawings, but the present invention is not limited to the examples. The drawings are schematic views for illustrating the principle of the present invention, and dimensions, relative sizes, etc. are not accurately represented, and the thickness may be omitted.
[0035]
1 and 2 show a preferred embodiment of the elastic telescopic rod of the present invention in which the pressing body is a divided pressing body. FIG. 1 and FIG. 2 show an elastic telescopic rod in a free state and an elastic telescopic rod in a fixed state, respectively, in which a coil spring is used as a spring. FIG. 2 shows only the clamping space and the screw portion of the central pillar. Moreover, in each of FIG. 1 and FIG. 2, a is a longitudinal cross-sectional view, and b is an BB cross-sectional enlarged view of the elastic telescopic rod shown in a. Further, FIG. 1c is a cross-sectional view of the central column in the CC cross section of the elastic telescopic rod shown in FIG. 1a. However, in each of FIG. 1a and FIG. 2a, the pin, the coil spring and the central column are not shown as vertical sections.
[0036]
3, 4 and 5 show a fixed holding body, a floating holding body and a divided pressing body in the elastic telescopic rod of the present invention shown in FIGS. 1 and 2, respectively. 3, a and b are a plan view and a front view, respectively, and in FIG. 4, a and b are a plan view and a partially cutaway front view, respectively. In FIG. 5, a, b, c, d, e, f, and g are a perspective view, a rear view, a front view, a bottom view, a side view, a FF cross-sectional view of the divided pressing body shown in c, and c, respectively. It is GG sectional drawing of the division | segmentation press body shown by FIG.
[0037]
The elastic telescopic rod of the present invention shown in FIGS. 1 and 2 has an inner cylinder 1 and an outer cylinder 2 which are cylinders, respectively. Therefore, the outer diameter of the inner cylinder 1 is slightly smaller than the inner diameter of the outer cylinder 2 and is slidably fitted into the outer cylinder 2. The inner cylinder 1 and the outer cylinder 2 are both steel cylinders, and the outer peripheral surface is covered with a synthetic resin film. A central column 3 that is engaged with the inner end 11 of the inner cylinder 1 and is movable in the direction of the long axis thereof is continuously provided. The central pillar 3 is a cylinder, and a housing 31 is provided in the middle part thereof. The casing 31 is formed by connecting two disks having different diameters, and is provided concentrically and integrally with the central pillar 3. A through hole 321 elongated in the major axis direction is formed in the engaging portion (upper part of the drawing) 32 of the central pillar 3.
[0038]
On the other hand, through holes 111 are formed on the same diameter above the inner end 11 of the peripheral wall of the inner cylinder 1 (the same applies in the drawings below). A pin 12 is inserted into the elongated through hole 321 drilled in the central pillar 3 and the through holes 111 and 111 drilled above the inner end 11 of the peripheral wall of the inner cylinder 1, and the central pillar 3 is the inner cylinder 1 Is engaged with the inner end 11 so as to be movable in the longitudinal direction. Both ends of the pin 12 are caulked outside the peripheral wall of the inner cylinder 1. A coil spring 33 is mounted between the upper surface of the casing 31 of the central pillar 3 and the engaging portion 32 by inserting the central pillar 3 into its central hole, and the lower end of the coil spring 33 is placed on the surface of the casing 31. Has been received.
[0039]
The opposite side (lower part of the drawing) on which the coil spring 33 is mounted with the housing 31 of the central column 3 as a boundary is a screw part 34. A male screw 341 is engraved on the outer peripheral surface of the screw part 34. The fixed clamping body 4 and the floating clamping body 5 are inserted into the screw portion 34 of the central pillar 3. Stoppers 35, 35 are provided integrally with the central pillar 3 at the lower end edge of the central pillar 3. The stoppers 35 and 35 are semi-elliptical protrusions, and the length from the outer tip to the center of the central column 3 is larger than the radius of the central column 3 and is positioned on the same diameter of the central column 3. It is flexible and is bent with its outer tip facing upward. The fixed clamping body 4 is an inverted frustoconical body, the inclination angle of the inclined surface 41 is an acute angle, and the center thereof has a penetration larger than the outer diameter of the male screw 341 of the screw part 34 of the central pillar 3. A hole 42 is formed.
[0040]
The floating sandwiching body 5 is a truncated cone having a cylindrical lower part, and the inclined surface 51 has an acute angle, and a through hole 52 is formed in the center thereof. In the figure, a female screw 521 that is screwed with the male screw 341 of the screw part 34 of the central pillar 3 is engraved. Further, the flexible sandwiching body 5 is provided with four flexible projecting pieces 53,..., 53 projecting radially from the outer peripheral surface of the lower cylindrical portion at a central angle of 90 °. Thus, the length of the protruding piece 53 is larger than the size of the gap between the outer peripheral surface of the cylindrical portion of the floating sandwiching body 5 and the inner peripheral surface of the outer cylinder 2, and the distal end portion of the protruding piece 53 is outside. The cylinder 2 is always in contact with the inner peripheral surface. These projecting pieces 53, 53 prevent co-rotation with the central pillar 3 of the floating sandwiching body 5. Further, the floating sandwiching body 5 is not dropped from the central column 3 by the stoppers 35 and 35 provided at the lower end edge of the central column 3.
[0041]
A sandwiching space 21 is formed by being surrounded by the slope 41 of the fixed sandwiching body 4, the slope 51 of the floating sandwiching body 5, and the inner peripheral surface of the outer cylinder 2. In the clamping space 21, the divided pressing bodies 6, 6, 6 are clamped by the slope 41 of the fixed clamping body 4 and the slope 51 of the floating clamping body 5. The divided pressing bodies 6, 6, 6 are connected to each other independently on the same cross section of the outer cylinder 2. The split pressing body 6 has a through-hole with a reduced diameter in the middle and a cylinder with the inner peripheral surface of the through-hole formed into inclined surfaces 61 and 62 in two directions with a central angle of 120 ° in the long axis direction. Is divided into three parts. Accordingly, the inclination angles of the inclined surfaces 61 and 62 are substantially equal to the inclination angles of the inclined surface 41 of the fixed holding body 4 and the inclined surface 51 of the floating holding body 5 that are in contact with the inclined surfaces 61 and 62, respectively. In addition, a plurality of grooves 631,..., 631 perpendicular to the long axis direction of the divided pressing body 6 are formed on the outer peripheral surface 63 of the divided pressing body 6.
[0042]
The upper and lower surfaces (upper surface in the drawing) of the fixed clamping body 4 are brought into contact with the lower surface of the housing 31 of the central pillar 3. Further, the fixed clamping body 4, the divided pressing body 6 and the floating clamping body 5 are brought into contact with each other on the inclined surfaces 41 and 61 and 62 and 51, respectively. The floating clamp 5 is the central column 3 because of the frictional resistance at these contact points and the elasticity of the flexible protrusions 53,... 53 of the floating clamp 5 and the friction with the inner peripheral surface of the outer cylinder 2. It can be reciprocated in the major axis direction of the central column 3 without rotating together with the rotation of the center column 3. The tip of each of the inclined surface 41 of the fixed sandwiching body 4 and the inclined surface 51 of the floating sandwiching body 5 is located in the gap between each of the slopes 61 and 62 of the divided pressing body 6 and the outer peripheral surface of the screw portion 34 of the central pillar 3. Intervened like a wedge. The central pillar 3, the fixed clamping body 4, the floating clamping body 5 and the divided pressing body 6 are all made of polyacetal resin.
[0043]
A gap between the inner peripheral surface of the outer cylinder 2 and the outer peripheral surface of the inner cylinder 1 at the inner end edge of the outer cylinder 2 is closed by a joint 22. Further, the outer end edges of the inner cylinder 1 and the outer cylinder 2 are closed by caps 13 and 23 having a bottomed hollow truncated cone shape. A plurality of concentric grooves 131, ..., 131, 231, ..., 231 are formed on the bottom surfaces of the caps 13, 23, respectively. The joint 22 and the caps 13 and 23 are both made of synthetic resin.
[0044]
In the elastic telescopic rod of the present invention shown in FIGS. 1 and 2, (1) an elastic telescopic rod in a free state by sliding the inner cylinder 1 in the outer cylinder 2 and reciprocating in the major axis direction ( The lengths of FIGS. 1a and b) are adjusted to a predetermined length longer than the size of the facing distance.
[0045]
(2) The elastic telescopic rod having a predetermined length rotates the inner cylinder 1 and interlocks with it to rotate the central pillar 3 so that the floating clamp 5 is brought close to the fixed clamp 4. It is done.
[0046]
(3) The slope 41 of the fixed clamping body 4 and the slope of the floating clamping body 5 intervened in a wedge shape in the gap between the slopes 61 and 62 of the divided pressing body 6 and the outer peripheral surface of the screw portion 34 of the central column 3 The respective tip portions of 51 are successively pushed in to increase their thickness, and accordingly, the divided pressing body 6 is moved radially outward on the transverse cross section of the outer cylinder 2, thereby dividing the pressing body 6. The outer peripheral surface 63 of the outer cylinder 2 is brought into close contact with the inner peripheral surface of the outer cylinder 2 and stopped, the central column 3 is fixed at a desired position in the outer cylinder 2, and the elastic telescopic rod is fixed (see FIGS. 2a and b). ).
[0047]
(4) Against the elasticity of the coil spring 33, the inner cylinder 1 is further pushed into the outer cylinder 2 so that the length of the elastic telescopic rod is shorter than the size of the facing distance, and the shortened elastic telescopic rod is Fit between furniture and the ceiling plate or wall, between two fixed objects, etc., then release the inner cylinder 1 from the push-in and put the caps 13 and 23 of the inner cylinder 1 and the outer cylinder 2 respectively. The bottom surface is brought into contact with furniture and a ceiling board or wall, and the surfaces of two fixed objects to complete the installation of the elastic telescopic bar. At this time, the coil spring 33 is compressed and the attached state of the elastic telescopic rod is maintained by its elasticity. When this elastic telescopic rod is used as a tension rod, the coil spring 33 expands and contracts to absorb earthquake vibration. Also, when this elastic telescopic rod is used as a curtain rod, the change in the size of the relative interval due to the temperature change and the distortion of the house over a long period of time is absorbed by the expansion and contraction of the coil spring 33.
[0048]
In this manner, the elastic telescopic rods of the present invention mounted between the furniture and the ceiling plate or wall and between the two fixed objects, respectively, are (1) the elasticity of the coil spring 33. In opposition, the inner cylinder 1 is pushed into the outer cylinder 2 and its length is shortened and removed. At this time, the coil spring 33 once compressed is restored. (2) The removed elastic telescopic rod is rotated by rotating the inner cylinder 1 in the direction opposite to that described above, and rotating the central column 3 in conjunction with the inner cylinder 1 so that the floating clamp 5 is fixed clamp 4 Are sequentially separated from each other, the size of the clamping space 21 is enlarged, and the outer peripheral surface 63 of the divided pressing body 6 is separated from the inner peripheral surface of the outer cylinder 2, and the central column 3 is released from its fixed state. The elastic telescopic bar is in a free stateThe
[0049]
FIG.And figure7These all show the engaging part with the inner cylinder of the center column of the elastic telescopic rod of the present invention in which a leaf spring is used as a ridge. That is, figure6Is an elastic material according to the present invention in which two arched leaf springs (hereinafter referred to as “bow springs”), which are superposed symmetrically to each other, are mounted in the outer cylinder in parallel to the long axis of the outer cylinder. The engagement part of the center column of an expansion-contraction bar | burr and an inner cylinder is shown, a is a longitudinal cross-sectional view which is a cut surface which passes each center of a center column and an inner cylinder along the overlapping surface of the said bow spring, b is The longitudinal cross-sectional view orthogonal to said a and c are CC sectional views of the elastic telescopic rod shown by said a.
[0050]
Figure6In the elastic telescopic rod shown in FIG. 1, the inner end 1 of the inner cylinder 1 is closed by a bottom plate. A bottomed cylinder is continuously provided as an engaging cylinder 50 below the inner cylinder 1. The engagement cylinder 50 has a diameter slightly larger than the diameter of the inner cylinder 1, is concentric with the inner cylinder 1, and has an upper portion overlapped with the inner cylinder 1 on the bottom surface. A bottom plate 501 is provided. The bottom plate 501 is connected to the upper end edge of the central column 3, and the engaging cylinder 50 itself and the bottom plate 501 correspond to the engaging portion 32 and the casing 31 of the central column 3, respectively.
[0051]
Thus, through-holes 111 and 111 are formed in the overlapping portion of the peripheral wall of the inner cylinder 1 with the engagement cylinder 50 on the same diameter. In addition, elongated through holes 502 and 502 extending from the overlapping portion with the inner cylinder 1 are formed in the upper portion of the peripheral wall of the engagement cylinder 50 in the major axis direction of the engagement cylinder 50 on the same diameter. ing. The inner cylinder 1 and the engagement cylinder 501 are engaged with each other by inserting the pin 12 through the through holes 111, 111 and the through holes 502, 502, and both ends of the pin 12 are connected to the peripheral wall of the engagement cylinder 50. It is caulked on the outside.
[0052]
A guide plate 503 parallel to the bottom plate 501 is provided at an intermediate portion inside the engagement cylinder 501. A rectangular through hole 5031 is formed in the center of the guide plate 503. Bow springs 60, 60 superposed symmetrically with each other are inserted into the through-hole 5031 and mounted in the engagement cylinder 50. The bow springs 60, 60 are mounted in parallel to the long axis of the engagement cylinder 50, that is, in the long axis direction of the outer cylinder 2 (not shown), and one end is the lower surface of the bottom plate 14 of the inner cylinder 1 In addition, the other ends are brought into contact with the upper surface of the bottom plate 501 of the engaging cylinder 50, respectively.
[0053]
Figure6In the elastic telescopic rod shown in FIG. 1, after the center column 3 is fixed in the outer cylinder 2, the inner cylinder 1 is reciprocated within the length of the through hole 502 in the engagement cylinder 50, thereby The springs 60 and 60 are bent and stretched, and their lengths are changed.
[0054]
Also figure7Is the center of the elastic telescopic rod of the present invention in which two pairs of leaf springs (hereinafter referred to as “two springs”), which are two pairs, are mounted laterally (perpendicular to the long axis) in the outer cylinder. The engagement part with the inner cylinder of a pillar is shown, a is a longitudinal section which is a cut surface which passes along the center pillar and the center of an inner cylinder perpendicularly to the major axis direction of two springs, and b is a longitudinal section orthogonal to the a A side view and c are CC cross-sectional views of the elastic telescopic rod shown by a. However, figure7In a, the pin and the double spring are not shown, and in b, the double spring is not shown as a cross section.
[0055]
Figure7The elastic telescopic rod shown in Fig.6The elastic telescopic rod shown in FIG. 4 is provided with a spacer 504 in place of the guide plate 503 in the engagement cylinder 50, and two pairs of springs 70 and 70 in place of the two bow springs 60 and 60. There is no difference except being described. That is, figure7In the elastic telescopic rod shown in FIG. 1, a disc-shaped spacer 504 is provided in the engagement cylinder 50 so as to be movable in the major axis direction of the engagement cylinder 50. Thus, protrusions projecting as guides 505 and 505 are provided on the inner peripheral surface of the peripheral wall of the engagement cylinder 50 as guides 505 and 505, and on the other hand, a groove 5041 is provided on the circumference of the spacer 504 on the same diameter. , 5041 are provided, and the guide 505 of the engagement cylinder 50 and the groove 5041 of the spacer 504 are fitted to each other, and the spacer 504 smoothly passes through the engagement cylinder 50 in the major axis direction of the engagement cylinder 50. Moved to.
[0056]
The double leaf spring 70 is a spring in which two leaf springs 701 and 701 are connected to each other at one short side. The leaf spring 701 is bent into a flat S shape with a small curvature. The two leaf springs 701 and 701 have one short side connected to each other and the other short side separated from each other to form a tweezer-like two-plate spring 70. One double spring 70 crosses the major axis of the inner cylinder 1 by the lower surface of the bottom plate 14 and the upper surface of the spacer 504, and by the lower surface of the spacer 504 and the upper surface of the bottom plate 501 of the engaging cylinder 50, respectively. (The same applies to the drawings below) and in opposite directions.
[0057]
Figure7After the central column 3 is fixed in the outer cylinder 2, the inner cylinder 1 is reciprocated within the length of the through-hole 502 in the engagement cylinder 50 after the center column 3 is fixed in the outer cylinder 2. The size of the interval between the short sides of the leaf spring 70 which are separated from each other is changed, and the spacer 504 is also reciprocated in the major axis direction of the engagement cylinder 50 in the engagement cylinder 50.
[0058]
Figure8Indicates a divided pressing body connected to each other by a strap, and a, b and c are a plan view, a BB cross-sectional view and a bottom view of the divided pressing body indicated by a, respectively. This divided pressing body is in a free state, and corresponds to a structure in which the divided pressing bodies shown in FIGS. 1, 2 and 5 are connected to each other with a strap. A through-hole 801 having a reduced diameter in the middle is formed in the center, and the inner peripheral surface of the through-hole 801 has two cylindrical bodies 80 having two inclined surfaces 802 and 803 in two directions. Four slits 804, 804, 805, 805 are divided into four at a central angle of 90 °.
[0059]
Thus, one set of opposed slits 804, 804 of the two sets of slits 804, 804, 805, 805 leaves the upper edge of the peripheral wall of the cylindrical body 80, and the other set of opposed slits 805, 805. , Leaving the lower end edge of the peripheral wall of the cylindrical body 80, the remaining four peripheral wall portions are strap bands 806,..., 806, and the slits are divided pressing bodies 807, 808, 807, 808. The divided pressing body 807 and the divided pressing body 807 are positioned line-symmetrically with respect to each other with the diameter as the axis of symmetry. Similarly, the divided pressing body 808 and the divided pressing body 808 are positioned line-symmetrically with each other. A plurality of protrusions 809,..., 809 project from the outer peripheral surfaces of the divided pressing bodies 807,.
[0060]
Figure9And figure10Respectively8The fixed clamping body and the floating clamping body for clamping the division | segmentation press body shown by are shown. Figure9And figure10In each of the drawings, a is a plan view, and b is a cross-sectional view taken along line B-B of the fixed holding body and the floating holding body shown in a. That is, figure9The fixed clamping body 90 shown in Fig. 1 is not substantially different from the fixed clamping body 4 shown in each of Figs. 1, 2 and 3, except that the upper surface is an ellipse. And a through hole 902 is formed in the center in the long axis direction. Thus, the length of the major axis of the ellipse on the upper surface is slightly smaller than the diameter of the cross section of the inner periphery of the outer cylinder 2.
[0061]
Also figure10The floating holding body 100 shown in FIG. 1 is essentially different from the floating holding body 5 shown in FIGS. 1, 2 and 4 except that the bottom surface is an ellipse. And a through-hole 1002 is formed in the center in the longitudinal direction, and a female screw that is screwed onto the inner peripheral surface of the through-hole 1002 with the male screw 341 of the screw portion 34 of the central pillar 3 10021 is engraved, and flexible projecting pieces 1003 and 1003 are projected on the long axis of the lower surface at the lower part of the outer peripheral surface. Thus, the length of the major axis of the ellipse on the lower surface is slightly smaller than the diameter of the cross section of the inner periphery of the outer cylinder 2.
[0062]
Figure11The figure above the central pillar8Thru102 shows the central column and the clamping space portion of the elastic telescopic rod of the present invention in a fixed state with the divided pressing body, the fixed clamping body and the floating clamping body shown in FIG. Figure11In the figure, a is a longitudinal section end view of the central column or holding space portion of the elastic telescopic rod, and b is an enlarged plan view of the divided pressing body in the fixed state shown in a. However, figure11In a, neither the central column nor the coil spring is shown as a longitudinal section end face.
[0063]
That is, figure11The elastic telescopic rod shown in FIG. 2 is different from the elastic telescopic rod of the present invention in the fixed state shown in FIG. 2 in that the fixed clamping body 4, the floating clamping body 5, and the divided pressing bodies 6, 6, which are made independent of each other, Each of the 68Thru figure10There is essentially no difference except that the divided pressing bodies 807, 808, 807, and 808 connected to each other by the fixed holding body 90, the floating holding body 100, and the strap 806 shown in FIG. Note that the long axis of the ellipses on the upper and lower surfaces of the fixed holding member 90 and the floating holding member 100 are orthogonal to each other.
[0064]
Figure11In the elastic telescopic rod shown in Fig. 1, the floating cylinder 100 is moved to the central column 3 by rotating the inner cylinder 1 (not shown) and rotating the central column 3 engaged with the inner cylinder 1. With this rotation, the housing 31 of the central pillar 3 is successively approached without rotating together with the central pillar 3, and the size of the holding space 21 is reduced. With the approach of the floating sandwich body 100 to the housing 31 of the central pillar 3, the housing 31, the fixed sandwich body 90, the divided pressing bodies 807 and 808, and the floating sandwich body 100 are the bottom surface of the housing 31, the fixed sandwich body The upper surface of 90, the slope 901 of the fixed clamping body 90, the slopes 802 and 803 of the divided pressing bodies 807 and 808, and the slope 1001 of the floating clamping body 100 are brought into contact with each other and brought into contact with each other.
[0065]
When the floating sandwiching body 100 is further brought closer to the housing 31 of the central pillar 3, the elliptical long axis equivalent part of the inclined surface 1001 of the floating sandwiching body 100 is brought into contact with the lower end of the slit 804 and the lower end of the slit 804 is The width is gradually increased, and the divided pressing bodies 807 and 808 are pushed outward by the lower ends of the portions adjacent to the slits 804, and the outer peripheral surfaces of the lower ends of the divided pressing bodies 807 and 808 that are in contact with the slits 804 are outside. The tube 2 is brought into close contact with the inner peripheral surface.
[0066]
Furthermore, the upper end of the slit 805 is brought into contact with the elliptical long axis equivalent part of the inclined surface 901 of the fixed sandwiching body 90, and the width of the upper end of the slit 805 is sequentially expanded, and the divided pressing bodies 807 and 808 The upper end of the portion adjacent to 805 is pushed outward, and the outer peripheral surface of the upper end of the portion adjacent to the slit 805 of the divided pressing bodies 807 and 808 comes into close contact with the inner peripheral surface of the outer cylinder. In this way, the central column 3 is fixed in the outer cylinder 2 and this elastic telescopic rod is fixed.The
[DepartureEffect of light]
The elastic telescopic rod of the present invention has a shortened time required for adjusting its length, and the pressing force is constant regardless of its length. In addition, it is easy to attach and detach, and has a simple structure, and is preferably used as a tension rod and curtain rod.
[Brief description of the drawings]
[Figure 1]MinSplit pressing bodyArranged independently of each otherThe coiled spring is used as a striation, and the elastic telescopic rod of the present invention in a free state is shown.
[Figure 2]MinSplit pressing bodyArranged independently of each otherThe coiled spring is used as a striation, and the elastic telescopic rod of the present invention in a fixed state is shown.
3 shows a fixed clamping body in the elastic telescopic rod of the present invention shown in each of FIGS. 1 and 2. FIG.
4 shows a floating holding body in the elastic telescopic rod of the present invention shown in each of FIGS. 1 and 2. FIG.
5 shows a divided pressing body in the elastic telescopic rod of the present invention shown in each of FIGS. 1 and 2. FIG.
[Figure6The engagement portion of the central column of the elastic telescopic rod of the present invention, in which a bow spring is used as the ridge, is shown.
[Figure7An engagement portion with the inner cylinder of the central column of the elastic telescopic rod of the present invention in which two springs are used as the striation is shown.
[Figure8A split pressing body connected to each other by a strap is shown.
[Figure9] Figure8The fixed clamping body for clamping the division | segmentation press body shown by is shown.
[Figure10] Figure8The floating clamping body for clamping the division | segmentation press body shown by is shown.
[Figure11] Figure8Thru figure102 shows the central column and the clamping space portion of the elastic telescopic bar of the present invention in a fixed state with the divided pressing body, fixed clamping body and floating clamping body shown in FIG.
[Explanation of symbols]
1 Inner cylinder
11 Internal end
111 Through hole
12 pin
13 cap
131 groove
14 Bottom plate
2 outer cylinder
21 Clamping space
22 Joint
23 cap
231 groove
3 Central pillar
31 box
32 Engagement part
321 Through hole
33 Coil spring
34 Screw part
341 Male Screw
35 Stopper
4 Fixed clamp
41 slope
42 Through hole
5 Free clamp
51 slopes
52 Through hole
521 female screw
53 Protruding piece
6 Split press
61 slope
62 slopes
63 Outer surface
631 groove
50 engagement cylinder
501 Bottom plate
502 Through hole
503 Guide plate
5031 Through hole
504 spacer
5041 groove
505 Guide
60 Bow spring
70 Double spring
701 leaf spring
80 cylinder
801 Through hole
802 slope
803 slope
804 slit
805 slit
806 Tie
807 Split press
808 split press
809
90 Fixed clamp
901 slope
902 Through hole
100 floating clamps
1001 slope
1002 Through hole
10021 female screw
1003 Protruding piece

Claims (4)

An outer cylinder and an inner cylinder fitted into the outer cylinder, and an inner end of the inner cylinder has a central column engaged with the inner end so as to be movable in the major axis direction; An intermediate portion of the central pillar is provided so that a housing is stopped at a predetermined position, and a ridge is attached to the central pillar between the housing and the inner end of the inner cylinder. A screw is engraved on the opposite side to which the ridge is mounted, and a fixed clamping body and a floating clamping body screwed with the screw are formed on the side of the central column where the screw is engraved. A split pressing body sandwiched between the fixed clamping body and the floating clamping body, wherein the casing is a collar provided concentrically with the central column on the central pillar, and the fixed clamping body Is inserted through the central column, and the outer peripheral surfaces of the fixed sandwiching body and the floating sandwiching body are inclined surfaces. In addition, the slope of each of the slant surfaces that are the outer peripheral surfaces of the floating sandwiching body is an acute angle, and the divided pressing body is formed with a through hole having a reduced diameter in the middle portion as the center, The surface is a cylindrical body that is inclined in two directions, and is divided in the major axis direction, and the divided pressing body includes a fixed sandwich body in which the inclination angle of the inner peripheral surface of the through hole is in contact with the inclined surface, and It is made substantially equal to or smaller than the inclination angle of the slope that is the outer peripheral surface of each of the floating sandwiches, and the loose sandwiches reciprocate in the major axis direction in the outer cylinder as the inner cylinder rotates. The respective ends of the floating clamping body and the fixed clamping body are inserted between the through-holes of the divided pressing body and the peripheral surface of the central pillar, and the divided pressing body is reciprocated with the floating clamping body. Is reciprocated in the radial direction of the cross section of the outer cylinder. Elastically stretchable rods and butterflies. The elastic telescopic rod according to claim 1, wherein the divided pressing bodies are arranged independently of each other . The elastic telescopic rod according to claim 1, wherein the divided pressing bodies are connected to each other . Fixed holding member is, in use, centered pillar of the collar member to the elastic expansion bar of any one of claims 1 to 3 provided so as to be brought into abutment.

Images