JP3009220U - Telescopic rod - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a telescopic rod that can be telescopically adjusted to the desired length with a single pressing operation and is convenient to use. [Structure] A plurality of fixing holes 22 are formed in a straight line along the axis of the inner sleep tube 2 which can be slid only in the axial direction by being inserted into the outer sleep tube 3 having a non-circular cross section, and the outer sleep tube 3 has an upper end edge at the upper edge thereof. The fixing device 4 for fitting and fixing is fitted and fixed to the upper edge of the outer sleep tube 3, and is provided with a through hole 541 which communicates with the hollow inside of the outer sleep tube 3 and which can correspond to the fixing hole 22 of the inner sleep tube 2. Mounting holes 531 that are parallel to each other on the outer wall surfaces on both sides of the through hole
A fixed seat 5 formed with a groove and a connecting rod 62 penetrating both mounting holes at both ends of the fixed seat 5, and a coil spring 7 mounted around the circumference of the connecting rod is provided with a bulge to constantly maintain a proper distance from the fixed seat 5. And its both end portions are connected and fixed to the protruding tip of the connecting rod of the mounting hole 531 and the convex column portion 8 that is constantly pulled by the coil spring 7 on the surface facing the fixed seat 5 and is inserted into the through hole 541.
It is constructed by assembling with the fixed body 8 including 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to a telescopic telescopic rod, and more particularly, to a telescopic telescopic rod in which a partial structure for fixing and holding the rod length is improved and the rod length can be adjusted more conveniently.

[0002]

[Prior art]

 Telescopic telescopic rods are used, for example, in tent columns. Such telescoping telescopic rods are used in a wide range of daily necessities because their lengths can be adjusted telescopically and they are convenient to carry, so even if they are used as fishing rods or grips for cleaning tools, for example, their long lengths can be used. It is possible to use it by using the adjustable points.

FIG. 5 to FIG. 6 show a three-dimensional exploded view and a cross-sectional view of the completion of assembly in such a telescopic telescopic rod of the prior art. This telescoping telescopic rod 1 is roughly provided with an inner sleeve tube 11 and an outer sleeve tube 12 which are fitted so as to be slidable relative to each other in an axial direction, and an inner sleeve tube which is fitted into an inner passage 121 of the outer sleeve tube 12. The contact plug 13 is fitted to the lower end edge of the outer sleeve tube 12, the protective cap 14 is fitted to the lower end edge of the outer sleeve tube 12, and the lower end of the inner sleeve tube 11 is connected to the inner passage 122 of the outer sleeve tube 12. When the sliding contact reaches the lower end opening of the inner sleeve pipe 11, the contact plug 13 is brought into contact with the protective cap 14 to prevent the inner sleeve pipe 11 from protruding from the lower end of the outer sleeve pipe 12 and prevent the inner sleeve pipe 11 from being used for a long time. It is configured so that the lower end does not crack.

The telescopic rod 1 is a means for holding the rod length as it is after the inner and outer sleeve pipes 11 and 12 are slid relative to each other to extend and contract to an appropriate length. A plurality of fixing holes 122 are formed in the outer peripheral wall of the outer sleeve tube 12 at appropriate intervals along the axial straight line, and a through hole 111 is formed in the lower end peripheral wall of the inner sleeve tube 11, and In the hole 111, a locking projection 16 that is constantly projected by receiving the tension of the spring piece 15 is attached.

Then, when the inner and outer sleeve pipes 11 and 12 are fitted into each other and any fixing hole 122 of the outer sleeve pipe 12 and the through hole 111 of the inner sleeve pipe 11 correspond to each other, the spring piece The locking protrusion 16 that is stretched on 15 is inserted into the fixing hole 122 and protrudes to the outside, so that the inner and outer sleeve pipes 11 and 12 cannot be slid relative to each other in the axial direction, and the length is maintained. Can hold. On the other hand, when it is desired to adjust the length of the telescoping telescopic rod 1, the end of the locking projection 16 protruding from the fixing hole 122 is inwardly pressed to contract, so that the inner sleeve tube 11 is closed. Again, the inner sleeve 121 of the outer sleeve tube 12 can be slid and moved, and the desired rod length can be adjusted.

In this telescoping telescopic rod 1, since the locking projection 16 is accurately inserted into the fixing hole 122 from the through hole 111 and locked, the inner and outer sleeve tubes 11 and 12 are axially aligned. It is preferable that only the sliding movement along the line is made possible and the relative rotation is made impossible. As a result, the locking protrusion 16 is accurately inserted and locked in correspondence with any of the fixing holes 122 linearly arranged along the axis of the peripheral wall of the outer sleeve tube 12 during the sliding movement along the axial straight line. However, the locking protrusion 16 is provided inside the inner sleeve tube 11, is biased by the spring piece 15 so as to project from the through hole 111, and the inner and outer sleeve tubes 11 and 12 are When the locking protrusions 16 that are pressed and contracted under the condition that they cannot rotate relative to each other move axially and face the next fixing hole 122 ', the protrusion of the momentary spring piece 15 causes the fixing hole 122' to move. Each time the inner sleeve tube 11 slides a certain distance, the locking projection 16 is inserted into the fixing hole 122 of the outer sleeve tube 12 and projects to the outer peripheral wall. Operation until the telescopic rod 1 reaches the length to be adjusted. The operator's hand must follow the movement of the locking projection 16 to change the height from beginning to end, and normally the locking projection 16 has a diameter larger than that of the fixing hole 122. Since it is small and the pressing area is relatively small, there is a problem that the adjusting operation is inconvenient.

Therefore, this type of telescoping telescopic rod 1 is provided with inner and outer sleeve tubes 11 and 12 which are fitted into each other in a circular tube shape, and when the sliding movement of a relatively long distance is adjusted, a locking projection is provided. At the same time as the protrusions 16 are pressed and contracted inward, the inner sleeve tube 11 is rotated in the radial direction to cause the locking protrusions 16 to deviate from the row of the fixing holes 122 arranged along the straight line. In this state, slide the inner sleeve tube 11 to the desired length of the telescopic rod 1 and then rotate it back to align the locking projections 16 with the fixing holes 122 on the straight line. The telescopic rod 1 can be adjusted to a desired length by pressing the locking projection 16 only once by inserting and locking it in an appropriate fixing hole 122.

[0008]

[Problems to be solved by the device]

 However, in the telescopic rod 1 as described above, since the inner and outer sleeve tubes 11 and 12 are capable of radial relative rotation, it is necessary to make the locking projections 16 correspond to the fixing holes 122. It is relatively difficult and inconvenient to use. That is, although the conventional telescopic rod can adjust the length and hold the length, the inconvenience of the adjusting operation in use due to the structural limitation has not been solved. .

The present invention has been made in response to the above-mentioned problems, and its purpose is to make it possible to expand and contract to a desired length with only one pressing operation, and a nesting type which is convenient for use. To provide a telescopic rod. Other objects of the present invention will be apparent from the following description.

[0010]

[Means for Solving the Problems]

 The telescopic rod of the present invention according to claim 1 as a means for achieving the above-mentioned object has the same cross-sectional shape that allows axial sliding only by being inserted into an outer sleeve tube having a non-circular cross section, in other words, A plurality of fixing holes are formed in a peripheral wall of the inner sleeve tube having similar cross-sectional shapes in a straight line along the axis, and a fixing device for fitting and fixing to the upper edge of the outer sleeve tube is fitted to the upper edge of the outer sleeve tube. Mounting holes that are fixed and communicate with the hollow inside of the outer sleeve tube and that can correspond to the fixing holes of the inner sleeve tube are formed, and mounting holes that are parallel to each other are formed on the outer wall surfaces on both sides of the through hole. A fixed seat and connecting rods that penetrate the both mounting holes are provided at both ends of the fixed seat, and the elastic elasticity of the coil spring mounted around the circumference of the connecting rod always keeps an appropriate distance from the fixed seat. Keep the control body and both side edges Connected and fixed to the tips of the connecting rods that protruded, and the protruding column portion that is constantly pulled toward the fixed seat and inserted into the through hole on the surface facing the fixed seat by the elastic elasticity of the coil spring. When the control body is pressed and contracted inward in combination with a fixed body provided, the convex column originally inserted and locked in any fixing hole of the inner sleeve tube through the through hole. The body is detached from the fixing hole so that the inner and outer sleeve tubes can slide axially relative to each other.

Further, in the telescopic telescopic rod according to the present invention of claim 2, each of the connecting rods provided at both ends of the control body has a tapered tapered locking end portion formed at a tip end thereof, and each locking rod is locked. A split groove is formed at the end of the end portion, and a locking hole into which the end of the locking end portion can be fitted is formed at both end portions of the fixed body at an appropriate distance from the convex column. Then, the hole diameter is changed in two stages within the locking hole to form a locking ring surface, and the locking end portion is fitted into the locking hole and fixed to the locking ring surface. The connecting rod and the fixed body are connected to each other, and the end portion of the lid plate fitted from the other side of the engaging hole is fitted and fixed in the split groove at the end of the engaging end portion so that the engaging end portion is The structure is such that it can be prevented from contracting inward.

[0012]

[Action]

 In the telescopic telescopic rod according to claim 1 of the present invention, when the length of the telescopic rod is adjusted, the control body protruding from the outer peripheral wall of the outer sleeve tube is contracted inward by a hand, and the coil spring is compressed. Since the fixed elastic body is overcome and the fixed body is interlocked so as to be separated from the fixed seat, the convex column part is separated from the fixed hole, and the inner sleeve tube is slid and moved under the unlocked state. If the inner / outer sleeve tube has an appropriate length and the pressure against the control body is released, the fixed elasticity of the coil spring moves the fixed body connected to the control body toward the fixed seat. Further, the convex column portion can be inserted and locked in any fixing hole of the inner sleeve tube and can be fixed to the length as it is.

Further, in the telescopic telescopic rod according to claim 2, a tapered tapered locking end portion is provided at a tip of each connecting rod, and a split groove for providing elasticity at a terminal end of the locking end portion. Further, since the lid plate for preventing the locking end portion from contracting inward is attached to each split groove, the rod length can be adjusted and the operability is further improved. Here, the term “sliding” is a concept that includes the case of moving in other forms such as sliding.

[0014]

【Example】

 Embodiments embodying the present invention will be described below with reference to the drawings. 1 to 4 show one embodiment of the present invention, FIG. 1 is a three-dimensional exploded view, FIG. 2 is an engagement state display view of a control body and a fixed body, FIG. FIG. 4 is a cross-sectional view during length adjustment.

As shown in FIG. 1, the telescoping telescopic rod of this embodiment has inner and outer sleeve tubes 2 and 3 which have the same non-circular cross-sectional shape (similar shape) and are slidably fitted in the axial direction. It consists of Among them, the inner sleeve tube 2 has a contact plug 21 fitted to the lower edge thereof, and the protective cap 32 also fitted to the lower edge of the outer sleeve tube 3. Then, when the lower end of the inner sleeve pipe 2 slides to the lower end opening of the hollow passage 31 of the outer sleeve pipe 3, the contact plug 21 abuts the protective cap 32, and the inner sleeve pipe 2 becomes the outer sleeve pipe 3. It is configured to prevent the lower end of the inner sleeve tube 2 from being deformed or cracked due to long-term use while preventing the lower end from protruding from the lower end.

Here, the cross sections of the inner and outer sleeve tubes 2 and 3 which are fitted into each other are provided in a shape different from a circle (in this embodiment, a substantially elliptical shape in which both side edges in the longitudinal direction are parallel to each other). A plurality of fixing holes 22 are formed in the inner wall of the inner sleeve tube 2 along the straight line in the axial direction at appropriate intervals, and the fixing device 4 is assembled and formed on the upper end of the outer sleeve tube 3. Has been done.

As shown in FIGS. 1 and 3, the fixing device 4 includes a fixing seat 5, a control body 6, both coil springs 7 and a fixing body 8. The fixing seat 5 is a hollow passage 31 of the outer sleeve tube 3. The upper end surface of the seat body is fitted and fixed, and the upper end surface of the seat body is provided with an opening hole 51 through which the inner sleeve tube 2 is inserted into the hollow passage 31 or is pulled out. Both side walls 52 are provided parallel to each other along the longitudinal direction of the outer sleeve 3, and projecting tubes 53 parallel to each other are formed substantially horizontally on each side wall 52. Further, a mounting hole 531 is provided along the axial center of the projecting tube 53, and a stepped contact portion 532 having a different hole diameter is formed in the mounting hole 531.

Further, between the both side walls 52, arc-shaped wall surfaces 54, 55 that bulge outward are provided, and the arc-shaped wall surface 54 on the side facing the contact portion 532 is parallel to the mounting hole 531. A through hole 541 is formed so as to penetrate the hollow passage 31 of the outer sleeve tube 3 so as to correspond to the fixing hole 22 of the inner sleeve tube 2.

The control body 6 includes a pressing portion 61 that is parallel to the circular arc wall surface 55 of the fixed seat 5. At both ends of the pressing portion 61, connecting rods 62 that extend parallel to the fixed seat 5 are formed. A shoulder portion 621 having a relatively large outer diameter is formed on the base side of each connecting rod 62, and a tapered tapered locking end portion 622 is provided at the tip of each connecting rod 62. A split groove 623 is formed at the distal end of the locking end 622 to provide elasticity, and a lid plate 63 that prevents the locking end 622 from contracting inward is attached to each split groove 623. ing.

Both coil springs 7 are respectively installed around the left and right connecting rods 62 of the control body 6, and both ends of each coil spring 7 are attached to the contact portion 532 of the fixed seat 5 and the shoulder portion 621 of the control body 6. Being treated.

The fixed body 8 includes a base portion 81 parallel to the circular arc wall surface 54 of the fixed seat 5, a convex column portion 82 corresponding to the through hole 541 of the fixed seat 5 is provided in the center of the base portion 81, and the convex column portion is provided. Locking holes 83 are formed on both left and right sides of the portion 82, and a locking ring surface 831 formed by changing the hole diameter into two steps is provided in each locking hole 83.

When assembling the telescopic telescopic rod of this embodiment, as shown in FIGS. 1 and 3, first, the inner and outer sleeve tubes 2 and 3 are slidably fitted to each other, and the fixed seat 5 is attached. Is fitted to the upper edge of the outer sleeve tube 3 so that the through hole 541 of the fixed seat 5 corresponds to the fixed hole 22 of the inner sleeve tube 2. After that, both coil springs 7 are respectively installed around the circumferences of both the connecting rods 62 of the control body 6, and both the connecting rods 62 are simultaneously inserted into both the mounting holes 531 of the fixed seat 5 so that both the connecting and inserting insertions 62 are The locking end portions 622 protruding from the mounting holes 531 are inserted into both the locking holes 83 of the fixed body 8, and the end portions 631 of the lid body 63 are mounted from the outside of the locking holes 83 of the fixed body 8. By fitting and fixing in the split groove 623 of the connecting rod 62, the locking end portion 622 is prevented from contracting inward, that is, due to the elastic elasticity of the coil spring 7, the pressing portion 61 of the control body 6 is prevented. However, a proper distance from the fixed seat 5 is always maintained, and correspondingly the fixed body 8 is pulled to the fixed seat 5 side so that the convex column portion 82 of the fixed body 8 passes through the through hole 541 and the inner sleeve tube 2 One of the fixing holes 22 is fixed to the inner / outer sleeve tubes 2 and 3 so that they cannot slide relative to each other. It can be held.

Further, as shown in FIGS. 3 and 4, when adjusting the rod length of the telescoping telescopic rod of the present embodiment, it is projected from the outer peripheral wall of the outer sleeve tube 3 by an operator's hand. When the control body 6 is compressed and contracted, the pressure against the control body 6 overcomes the tension elasticity of the coil spring 7 and works so as to separate the fixed body 8 from the fixed seat 5. Therefore, the convex column portion 82 separates from the fixing hole 22, and the inner sleeve pipe 2 can be slidably moved under the non-locking state, and the inner and outer sleeve pipes 2 and 3 have appropriate lengths. If the pressing force on the control body 6 is released after that, the fixed body 8 connected to the control body 6 moves toward the fixed seat 5 due to the tension elasticity of the coil spring 7, and the convex column portion 82 of the fixed body portion 82 moves toward the inner sleeve. The present embodiment can be fixed and held in the same length by inserting and locking it in any fixing hole 22 of the tube 2.

By the way, in the telescopic rod of the present invention, the control body 6 and the fixed body 8 of the above-described embodiment are made of a plastic material, and the plastic material is fully deformed so that the telescopic rod is engaged. In the case of manufacturing with a metal material, the locking end 622 of the connecting tube 62 of the control body 6 is formed into a tapered rod body, and the rod body is directly fixed. It may be inserted and fixed in the locking hole 83 (of course, the hole diameter is matched with the outer diameter of the rod body).

It should be noted that the present invention is not limited to the above-described embodiments, and includes configurations that can be modified and implemented within the scope of the present invention. Incidentally, the cross-sectional shape of the inner and outer sleeve tubes 2 and 3 is not only formed into a substantially elliptical shape in which both side edges in the longitudinal direction are parallel to each other, but also the inner and outer sleeve tubes 2 and 3 cannot rotate in the radial direction. Any non-circular cross-sectional shape, such as a quadrangular cross-section or other polygonal shape, may be used, and the slidable insertion quantity of the inner and outer sleeve tubes 2 and 3 (in the above-described embodiment, two pieces will be described. However, it is natural that the number may be increased to three or more if necessary.

[0026]

[Effect of device]

 As is clear from the above description, according to the telescopic telescopic rod of claim 1 of the present invention, the inner and outer sleeve tubes have the same non-circular cross-sectional shape. Will not be able to rotate each other in the radial direction, so that the fixing hole of the inner sleeve pipe can exactly correspond to the convex column portion of the fixing device at the upper end of the outer sleeve pipe, and the fixing device after assembly Due to the tension elasticity of the coil spring, there is an effect that the convex column portion can be made to correspond to the fixing hole and the through hole at the same time by any relative sliding of the inner and outer sleeve tubes. Also, if the sleeve tube is supported with one hand and the control body is pressed and shrunk at the same time with the fingers of the hand, the convex column part that is locked and fixed in any of the fixing holes of the inner sleeve tube will come out of the fixing hole. When the inner sleeve tube is disengaged and can slide in the hollow inside of the outer sleeve tube, and when the inner and outer sleeve tubes are slid relative to each other to a desired length, the finger pressing the control body is released. Then, there is an effect that the convex column portion of the fixed body can again be inserted and locked in any fixing hole of the inner sleeve tube to fix and hold the length thereof.

According to the telescopic telescopic rod of the second aspect, it is possible to further prevent the locking end portion from contracting inward, and to further improve the rod length adjustment. Have an effect.

As described above, according to the telescopic telescopic rod of the present invention, the inner and outer sleeves can be slid relative to each other and adjusted to a desired length by pressing the control body at a time for an appropriate time. In addition, since the pressing portion of the control body is not restricted by the hole diameter of the fixing hole, the pressing area can be made relatively large and pressing is considerably convenient, and the fixing device has an outer sleeve. Since it is fitted and fixed to the upper end of the tube, its operation position is fixed, and the length can be easily adjusted even in a place where the light beam is relatively dark.

[Brief description of drawings]

FIG. 1 is a three-dimensional exploded view showing an embodiment of the present invention.

FIG. 2 is an engagement state display diagram of a control body and a fixed body showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view during length adjustment showing an embodiment of the present invention.

FIG. 5 is a three-dimensional exploded view of a telescopic telescopic rod of a conventional example.

FIG. 6 is a transverse cross-sectional view showing the completion of assembly of a telescopic telescopic rod of a conventional example.

[Explanation of symbols]

2 ... inner sleeve tube, 3 ... outer sleeve tube, 4 ...
..Fixing device, 5 ... Fixing seat, 6 ... Control body, 7 ...
..Coil springs, 8 ... Fixed body, 22 ... Fixed holes,
531 ... Mounting hole, 541 ... Through hole, 62 ... Connecting rod, 622 ... Locking end portion, 623 ... Split groove, 63
... Lid plate, 82 ... Convex column part, 83 ... Locking hole, 8
31 ... Locking ring surface

Claims (2)

[Scope of utility model registration request] 1. An outer sleeve tube having a non-circular cross section, wherein a plurality of fixing holes are formed in a straight row along an axis in a peripheral wall of the inner sleeve tube having the same cross-sectional shape and capable of only sliding in an axial direction. A fixing device that is fitted and fixed to the upper edge of the outer sleeve tube, is fitted and fixed to the upper edge of the outer sleeve tube, communicates with the hollow inside of the outer sleeve tube, and can be fitted correspondingly with the fixing hole of the inner sleeve tube. A fixing seat having a hole and mounting holes parallel to each other formed on the outer wall surfaces on both sides of the through hole; and connecting rods inserted through the mounting holes at both ends thereof,
A control body that always keeps an appropriate distance from the fixed seat by the elastic elasticity of a coil spring mounted around the circumference of the connecting rod, and both side ends of the control body are connected and fixed to the tips of the connecting rods protruding from the mounting holes. In combination with a fixed body having a convex column portion that is constantly pulled toward the fixed seat and inserted into the through hole due to the elastic elasticity of the coil spring on the surface facing the fixed seat, When the control body is pressed and contracted inward, the convex column body inserted and locked in any fixing hole of the inner sleeve tube through the through hole is separated from the fixing hole, and A telescopic rod, wherein the outer sleeve tube is slidable in the axial direction relative to each other. 2. A tapered tapered locking end is formed at the tip of each connecting rod provided at both ends of the control body, and a split groove is formed at the end of each locking end, and Locking holes into which the ends of the locking ends can be inserted are formed in both side ends of the fixed body at an appropriate distance from the convex column, and the hole diameter is changed in two stages within the locking hole. To form a locking ring surface, and the locking end portion is fitted into the locking hole and fixed to the locking ring surface to connect the connecting rod and the fixed body, and A lid plate end mounted from the other side of the locking hole is fitted and fixed in a split groove at the end of the end so that the locking end can be prevented from contracting inward. The telescopic telescopic rod described in 1.