JP3067551B2 - Telescopic pole - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic pole used for a pole such as a clothesline, a pole for drying clothes, a tent or a tap.

[0002]

2. Description of the Related Art Conventionally, this type of pole has been made longer by fitting concave and convex at the end of the pole.

[0003]

[Problems to be solved by the invention]

(1) The telescopic pole can be easily and reliably fixed at an arbitrary length position. (2) The detachment of the inner pipe can be prevented by a simple mechanism. (3) It is also suitable as a pole for drying clothes or for supporting sheets on tents and taps. (4) The length of the pipe during storage can be shortened. An object of the present invention is to provide a telescopic pole.

[0004]

Means for Solving the Problems (1) Large-diameter pipe A ₂
Stretch port telescopically housing the pipe A ₁ of the small diameter within - at Le A, attaching the rod member 2 threaded portion 3a on the end of the pipe A ₁ of the small diameter, it is loosely inserted into the rod member 2 The lock support member 4 and the lock press member 6 are located between the lock support member 4 and the lock press member 6 with the other threaded portion which is screwed into the screw portion 3a of the rod member 2.
And a lock member X composed of a lock member 5 which is expanded in the radial direction by the pinching force of the pipe and is supported so as to be able to press against the inner wall of the large-diameter pipe, and at least the large-diameter pipe A
₂ of the inner wall is formed in the polygonal cross section, and the locking projection of the corners engage the polygonal inner wall of the large diameter pipe A ₂ on the outside of the locking support member 4 is formed. (2) Large-diameter pipe A ₂ whose inner wall is formed in a polygonal cross section
Inside, a small-diameter pipe A ₁ whose inner wall is also formed as a polygon
In the telescopic pole A in which the lock device X is retractably stored and can be fixed by the lock device X, the lock device X
, A lock support member 4, a lock member 5, and a lock pressing member 6. The rod member 2 is connected at _one end to an end of a small-diameter pipe A1, and has a screw portion 3a at the other end. The locking support member 4 has a through hole 4e through which the rod 3 passes, and a locking projection 4 on the outer periphery.
g, a large diameter portion 4b, an inclined surface 4a following the large diameter portion 4b, and a cylindrical portion 4c provided with a rotation preventing cut 4f following the inclined surface 4a. It has a hole 5a into which the cylindrical portion 4c of the lock support member 4 fits, and the lock pressing member 6 has the cylindrical portion 4c of the lock support member 4 inserted into the center thereof. It has a hole 6a having a cut part 6b for rotation prevention corresponding to the cut part 4f of the part 4c, and has a screw part 6c screwed with a screw part 3a provided at the end of the rod 3 at the end. I have. (3) large-diameter expansion port of small diameter pipe A ₁ in the pipe A ₂ telescopically accommodated - in Le A, the small-diameter pipe A
_{At one} end, a rod member 2 'with a screw portion 3a' is attached, and a locking pressing member 6 'that can be screwed into the screw portion 3a' of the rod member 2 ', and a locking pressing member 6' of the rod member 2 '.
A lock device X 'comprising a lock member 5' which expands in the radial direction by a clamping force between the side lock supporting portion 2a 'and the lock pressing member 6' and can be pressed against the inner wall of the large-diameter pipe. has, engaged to be engaged with at least the inner wall of the pipe a ₂ of the large diameter is formed in the polygonal cross section, and the corners of the polygonal inside wall of the large diameter pipe a ₂ on the outside of the locking pressing member 6 ' A stop projection is formed. (4) the inner wall accommodating the small diameter of the pipe A ₁ which also the inner wall is formed in a polygon in the large diameter of the pipe A ₂ formed in polygonal section telescopically,
In the telescopic pole which can be fixed by the lock device X ',
The lock device X 'includes a rod member 2' and a lock member 5 '.
, A locking pressing member 6 ', and a retaining ring 12' for preventing the locking pressing member 6 'from coming off. The rod member ₂ ' is connected at _one end to the end of the small-diameter pipe A1, and has a large-diameter portion. 2b '
An inclined surface 2a 'concentric with the large diameter portion 2b';
a 'and a threaded portion 3a concentric with the rod member.
′ Has a through hole 5a ′ through which the locking pressing member 6 ′ has a screw portion 6a ′ which is screwed with the screw portion 3a ′ of the rod member 2 ′ at the center, and the outer periphery of which has a large diameter. It has the same polygonal shape as the inner wall of the cylinder. (5) In the above (1) to (4), the lock material is made of any one of a rubber material, a rubber-like synthetic resin material, a metal spring material, or a block member that is divided or expanded in the circumferential direction, It can be expanded in the radial direction by the pinching force between the rod member and the pressing member for locking. (6) In the above (1) to (4), a conical inclined surface is provided on the locking material side of the locking pressing material, and the locking material can be expanded in the radial direction by the clamping force of the locking pressing material. (7) In the above (1) to (4), a plurality of small-diameter pipes sequentially provided with a locking device in a medium-diameter pipe having a locking device in a large-diameter pipe and a plurality of small-diameter pipes provided in a medium-diameter pipe. Stretched and connected.

[0005]

Embodiment 1 A description will be given based on FIGS. The expansion port - Le A is a structure for expansion and contraction of the diameter of the two pipes of the pipe A ₁ and the large-diameter pipe A _2. In other words, so that the diameter of the pipe A ₁ is stretchable in the hollow portion of the large diameter of the pipe A _2, it can be locked connected by a desired length position by a locking device X of the present invention. Pipe A ₁ and the large-diameter pipe A ₂ of the small diameter are each configured with a hollow pipe.

[0006] As is apparent in FIG. 1, the end cap 1 is fixed to one end in the pipe A ₁ of the small diameter of the locking device X. The diameter of the other end of the pipe A ₁ is fixed rod member 2. The rod member 2 is integrally formed with a rod base 2a and a rod 3 having a threaded portion 3a from the center to the distal end side.
A lock support member 4 having a conical inclined surface 4a and a cylindrical portion 4c with a center hole fitted therein is inserted. Further, the lock member 5 is fitted to the cylindrical portion 4b of the lock support member 4. The lock member 5 is connected to the rod 3 from the side facing the lock support member 4.
Locking member 6 screwed into the screw portion 3a provided on the end side of
By being clamped, the locking member 5 by screwing the locking pressing member 6 projecting outward in a radial direction, is pressed against the inner surface of the large diameter pipe A ₂ to fix the small diameter pipe A ₁ and the large-diameter pipe A _2. At the end of the rod 3 having a threaded portion 3a at the end, a retaining ring 12 for preventing the locking pressing member 6 from coming off is detachably attached.

[0007] The rear cap 7 at one end of the large-diameter pipe A ₂
Are attached by pins 8 or caulking. At the other end facing the rear cap 7, stop cap 9 for the removal prevention diameter of the pipe A ₁ is secured, the cap 10 is fitted detachably on the stop cap 9. The cap 10 and the tip cap 1 are connected by a connecting tool 11 such as a chain or a string. Stretch port - To extend the Le A, remove the cap 10 has a stop cap 9 with one hand, sliding pull out the small-diameter pipe A _1.
Then, the large or small diameter pipe is rotated at a position where the lock member X is stretched to an appropriate length, and the locking pressing member 6 of the locking device X is screwed in. The locking member 5 is expanded radially outward to protrude, and the peripheral edge of the locking member 5 is extended. was in close contact with the inner surface of the large diameter pipe a ₂ is fixed.

Hereinafter, each member relating to the lock device X of the telescopic pole A will be described in detail. The small-diameter pipe and the large-diameter pipe have the cross-sectional shapes shown in FIG. Each pipe has a circular cross-section on the outer periphery and a polygonal cross-section on the inner periphery, for example, a hexagon. For this reason, the corners of the inner circumference are thin. Although not shown, the outer shape of the pipe may be polygonal in addition to the circular outer shape. Alternatively, a plurality of longitudinal grooves may be formed on the inner circumference of a pipe having a circular inner and outer circumference instead of a polygonal pipe having a circular outer circumference.

[0009] The end of the small diameter pipe A ₁ is fitted tip cap 1 (Fig. 5). Tip cap 1 in such a synthetic resin-made die casting, the small-diameter pipe A ₁ of fitting inserted liked - DOO-shaped base 1a is the outer peripheral surface as shown in FIG. 5 (e) is in response to the shape of the inner wall of the pipe For example, it has a polygonal shape such as a hexagon. A rod 1f is embedded in the center of the main body on the opposite side of the skirt-like base 1a. Ska is inserted into the small diameter pipe A ₁ - outside the bets like base portion 1a protruding portions 1b to be engaged with the corner portion of the small diameter pipe A ₁ inner surface are integrally formed. Reference numeral 1c denotes a head of the tip cap 1. One half is a radially thin stopper 1d (FIG. 5 (c)), which is provided with a hole 1e for attaching a chain or a string. The rod 1f is to be inserted into a hole of a sheet such as a tent, and is made of a rod such as stainless steel. The rod 1f integrally formed in the head 1c is partially processed into a knurl 1g, whereby the rod 1f is firmly fixed so as not to come off. 1h is a rib provided in the hollow portion. 1i is a recess formed between the projecting portion 1b, for fixing the small-diameter pipe A ₁ is crimped at punch or the like in thisゝ.

[0010] With reference to FIG. 6 described rod member 2 which is fixed to the other end of the small diameter pipe A _1. Rod member 2
Is also made of synthetic resin, die-cast, or the like. Because fitted to the inner surface of the small diameter pipe A _1, the outer periphery of the rod member 2 has a polygonal eg hexagonal. The corner of the polygon is provided with a protruding portion 2a that engages with the inner corner of the small diameter pipe. A small-diameter pipe A ₁ is provided between the protrusions 2a.
A concave portion 2b for caulking and coupling is provided. Rod 3
Has a screw portion 3a on the end side and a head portion 3b on the other end is integrally embedded in the rod member 2. At the end of the rod 3, a hole 3c for inserting the pin 8 is formed. Reference numeral 2c denotes a boss portion into which a concave portion provided on the end surface of the lock support member 4 is fitted.

The lock support member 4 will be described with reference to FIG. The lock support member 4 has a large-diameter portion 4b having an inclined surface 4a for receiving an end surface of the lock member 5, and a cylindrical portion 4c into which the lock member 5 is inserted, and has a bosh shape. A countersunk hole 4d that engages with the boss 2c of the rod member 2 is provided on the end surface of the large diameter portion. A through hole 4e into which the rod 3 is inserted is provided at the center of the cylindrical portion 4c. The cylindrical portion 4c includes a cut portion 4f in which both sides are cut in parallel, and forms a rotation locking portion of a locking pressing member 6 described later. A locking projection 4 composed of a plurality of projections is provided on the outer periphery of the large-diameter portion 4b of the support member 4 for locking.
g. Projecting portion 4g faces the corners of the rectangular inner surface of the large diameter pipe A _2, acts as a guide portion and a rotation stop during stretching.

FIG. 8 is an explanatory view of the lock member 5. In the example of FIG. 8A, the lock member 5 is made of rubber, a soft synthetic resin or an elastic material similar thereto, and has a hole 5a in the center of which the cylindrical portion 4c of the lock support member 4 fits. 5b is an inwardly inclined surface. The lock material 5 is not limited to an elastic material as shown in FIG. 8A, but a plurality (3 in FIG. 8) of hard materials having inclined surfaces 5b on both side surfaces as shown in FIG. 8B or 8C. A metal block body such as a synthetic resin or die cast may be used. FIG. 8D shows a petal-shaped elastic material formed in a lantern shape, or FIG.
As shown in (e), the petals may be radially arranged. The material may be made of a hard synthetic resin or a metal. In any case, when the lock member 5 is squeezed by the lock pressing member 6 and the lock support member 4, the lock member is likely to protrude outward in the radial direction, so that the lock pressing member 6, the lock support member 4, and the lock member 5 are provided. Both sides are inclined in a wedge shape,
What is necessary is just to make it the structure which the lock material 5 protrudes in the outer peripheral direction by the wedge action.

Referring to FIG. 9, the details of the lock pressing member 6 will be described. 6a is a cylindrical portion 4c of the lock supporting member 4.
The hole 6a has a cut portion 6b for preventing rotation on both sides. The cut portion 4b corresponds to the cut portion 4f of the cylindrical portion 4c. That is, the rotation is prevented by the engagement between the cut portion 4f and the cut portion 6b, and the clamping pressure of the lock member 5 is made more complete.
Reference numeral 6c denotes a thread portion formed of a nut or the like for screwing the rod 3, and is integrally inserted when the locking pressing member 6 is formed. The lock pressing member 6 is made of a hard synthetic resin, metal,
Use die-cast products.

[0014] Figure 11 is a detailed view of the stop cap 9 attached to the end of the large-diameter pipe A _2. 9a is large pipe A ₂ is fitted on the inside, to fix the large-diameter pipe swaging Ska -
The base has a plurality of recesses 9b in the inner surface opening,
The recesses 9b are inserted and removed portions for engagement projection 4g consisting of protrusion of the locking support 4 of the small-diameter pipe A _1. That except recess 9b is a slip prevention stopper of the small diameter pipe A _1. Reference numeral 9c denotes a concave groove-shaped locking portion provided on the outer periphery, which is a slip stopper that has this portion and performs a rotating operation when expanding and contracting. 9d
Is an inwardly convex engaging portion provided at the end of the stopper cap 9,
Large-diameter pipe A for supporting and stretching sheets such as tapers
An outwardly concave groove-shaped engaging portion 10a of a cap 10 (FIG. 10) also serving as a cover at _two ends is fitted. 10b (FIG. 10) is a chain.
Holes for fixing one end of the connecting tool 11 such as
c is an insertion hole for the rod 1f attached to the tip cap 1. Although not shown, the recess 9 of the stopper cap 9 is not shown.
Of course, fitting support for reversing the fitting relationship between b and the locking portion 10a of the cap 10 is also possible.

[0015] Figure 12 is an end of the large-diameter pipe A ₂ cover - is a detailed view of the rear cap 7. This has an umbrella-shaped part 7b at one end and a skirt-shaped body part 7a as shown in FIG.
There has a configuration to fit within the large-diameter pipe A _2. Main unit 7
a has a polygonal shape, for example, a hexagonal cross section, as shown in FIG. The engaging projection 7c is provided on the top of the polygonal corner.
have. During engagement with the large-diameter pipe A ₂ This engaging protrusion 7c is brought into contact with the corners of the polygonal inner peripheral surface of the large-diameter pipe. 7d is a stop portion provided in the diameter direction on the main body 7a, the to prevent insertion or processed omission fasteners such as split pin bis or caulking to stop portion provided at the tip of the large diameter pipe A ₂ I have.

Returning to FIG. 1, reference numeral 12 denotes a retaining ring for preventing the detachment, which is attached to the rod 3 and restricts the amount of retraction of the lock pressing member 6 by this.

[0017]

[Stretching method] stretch port - To extend the Le A from the "contraction" state in Fig. 1, removed from the stop cap 9 of the cap 10, thereby drawer slide a small diameter pipe A ₁ to the left in FIG. 1. Rotating each other inside and outside the pipe in a direction orthogonal to the axis at a desired length position, the locking projection 4g consisting of protrusion of the locking support member 4 is engaged locks rotation to the inner wall of the large diameter pipe A ₂ . Then, the locking pressing member 6 and the locking supporting member 4 rotate integrally by the engagement of the cut portions 4f and 6b. Then, since the screw portion 6c of the lock pressing member 6 is screw-engaged with the screw portion 3a of the rod 3, the lock pressing member 6 is screwed toward the locking support member 4, and the locking support member 4 is locked.
And the lock member 5 sandwiched between the lock pressing members 6 is pressed to the left in FIG. Then the lock member 5 made of such an elastic body or a block body bulges in the radial direction, that the large diameter pipe A ₂ side, is pressed against the corners of the inner surface and polygonal large diameter pipe A _2, large-diameter pipe A at the friction ₂ is fixed to the small diameter pipe a _1, to maintain the desired length position (FIG. 3).

To contract the lock, the inner and outer pipes A ₁ and A ₂ are rotated in opposite directions to release the lock pressing member 6 from the locking support member 4, and the lock member 5 returns to its original state. The small-diameter pipe is pushed inside the large-diameter pipe and housed as shown in FIG. The insertion hole 10c of the cap 10 is fitted into the rod 1f, and the peripheral edge of the cap 10 is fitted into the stopper cap 9. This state is acceptable, but to further ensure the storage state,
By turning the rod 1f housed in the stopper cap 9, the lock member 5 is locked to the large-diameter pipe to ensure reliability. Although not shown, the base 1a of the tip cap 1 and the rod 1
f, or the base of the rod member 2 and the base of the rod 3 or the locking pressing member 6 and the threaded nut can also be formed integrally.

[0019]

Embodiment 2 This will be described with reference to FIGS. FIG. 13 is a state diagram at the time of storage, and FIG. 14 is a state diagram at the time of extended use. The present embodiment is a combination type using three elastic poles. Stretch port in this example - le B, in addition to the combination of the small diameter pipe A ₁ and the large-diameter pipe A ₂ of Example 1,
Further larger diameter or more large-diameter pipe A ₂ is a combination further a third additional pipe A ₃ of smaller diameter than the small diameter pipe A _1. That is, related configuration between the small-diameter pipe A ₁ and the large-diameter pipe A ₂ is the same as in Example 1. However, this case is the additional pipe A ₃ under any of the large-diameter pipe A ₂ or outside of the small diameter pipe A ₁ inner being arranged so as to be located.

The structure of the additional pipe A ₃ (for example, a large-diameter additional pipe provided outside the large-diameter pipe A ₂ ) is as follows. 'Combine, the rod member 2' rod member 2 on the end of the large-diameter pipe A ₂ in the first embodiment the locking support 4 '
Fit. The lock member 5 'is sandwiched between the lock support member 4' and the lock pressing member 6 '. The configuration of each part is the same as that described in the first embodiment, except that the dimensions are appropriately changed in size according to the thickness of the added pipe, and the description is omitted.

[0021]

[Operating] in relation to the small diameter pipe A ₁ and the large-diameter pipe A ₂ is added to the locking device X to the end of the large-diameter pipe A _2. Since the operation is the same as that of the first embodiment, the fixed holding of the inner and outer pipes is omitted.

[0022] Then attach the rear cap 7 to the other end of the stopper cap 9 attached to the end of the additional pipe A _3, is rotated at a desired position from the additional pipe A ₃ drawer large diameter pipe A _2, as in the previous examples Similarly the lock member 5 is bulged outwardly by the locking pressing member 6 to fix the relative position between the intermediate large-diameter pipe a ₂ Add pipe a _3. In this way, the use of a large number of pipes makes it possible to use the telescopic port longer than in Example 1 when in use.
In addition, the length B can be obtained, and at the time of storage, the length can be reduced to substantially the same length as described above.

Although the second embodiment has been described as a combination type using three elastic poles, the present invention is not limited to this. Diameter pipe A ₂ on the right side of FIG. 11 with the exception of the rear cap 7 of the second additional pipe A _3, 5 pieces of stretchable port for attaching a small diameter pipe A ₁ in the additional pipe A ₃ - course combinational by Le It is possible. There is also a configuration in which the rod member 2 and the lock support member 4 of the first embodiment are integrally formed. In this case, the protruding portion 4g of the lock support member 4 can be omitted.

[0024]

Embodiment 3 This will be described with reference to FIGS. Figure 15 is a further structural example of another locking device X 'of the small diameter pipe A ₁ and the large-diameter pipe A _2. In this embodiment, as is apparent from the exploded view of FIG. 16, the components of the lock device X 'are different from those of the first embodiment or the second embodiment.
Especially 'it is fixed, but this rod member 2' rod member 2 on the end of the small diameter pipe A ₁ is a rod member 2 of the first embodiment
The structure is substantially the same as that of the previous embodiment except for the rod member 2 'with the lock support portion 4' having the structure in which the lock support member 4 and the lock support member 4 are integrally formed. A lock member 5 'having the same structure as that of the first embodiment (FIG. 8) is used. For example, in FIG. 15, a split nut type is formed, and a through hole 5a' through which the rod 3 'is passed through the center of the split nut. Is provided. The lock pressing member 6 'is a hexagonal nut type, and is provided with a screw portion 6a' to be screwed into the screw portion 3a 'of the rod member 2'. In addition, each corner of the hexagonal nut type serves as a locking projection 6g ', and the nut and the locking projection 6g' correspond to the corners of the polygonal inner wall of the pipe of the above-described embodiment. It is formed to engage. Reference numeral 12 'denotes a retaining ring for preventing the locking pressing member 6' from coming off.

Now, in order to extend the telescopic pole in such a configuration, the inner and outer pipes are pulled out from each other and slid. When the inner and outer pipes are rotated at a desired position, the locking pressing member 6 '
There so engaged with the polygonal internal surface of the large diameter pipe A _2, the rod member 2 'to lock the pressing member 6' around the. Then, the locking pressing member 6 'moves to the left side in FIG. 15, and presses the locking member 5' between the conical inclined surface 2a 'of the rod member 2' and the locking pressing member 6 '. The lock member 5 'is pressed against the conical inclined surface 2a' provided on the rod member 2 ',
Since it is pushed and spread outward, the locking member 5 'is further spread outwardly (radially) by wedge effect, is strongly pressed against the inner surface of the large diameter pipe A _2. Thus, the inner and outer pipes are fixed. Stop cap 9 'caulking the end of the large-diameter pipe A _2,
It comprises a skirt-shaped base cylinder 9a 'fixed with screws or the like and a stop part 9b' with a locking part 9c 'screwed to this base cylinder 9a'. Reference numeral 10 'denotes a cap fitted to the stopper cap 9'.

FIG. 17 shows a third embodiment in which the lock device X 'of the third embodiment is applied to a three-piece combination type as in the second embodiment.

[0027] Figure 18 locking device X of Example 4 "and is obtained by constituting each structure of the locking device X of Example 3 'reversed. Threaded portion 3a on the end of the small diameter pipe A _1" for receiving On the other hand, a rod member 2 "having a concave hole 3b" is fixed. In addition, the screw portion 6 screwed to the screw portion 3a ″
Locking pressure member 6 ″ embedded with rod 3 ″ with a ″
Is screwed into the threaded portion 3a "of the rod member 2".
Incidentally, it is provided "locking projection 6g for engagement with corner portions of the polygonal inside wall of the large diameter pipe A ₂ on the outside of the" lock pressing member 6,
At the end of the screw portion 6a ", the screw portion 3 of the rod member 2" is attached.
A retaining ring 12 "is screwed onto a" to prevent it from slipping off. A lock member 5 "supported so as to expand in the radial direction by the above-described clamping force is inserted between the rod member 2" and the lock pressing member 6 ".

[0028]

According to the present invention, a rod member 2 having a threaded portion 3a is attached to an end of the small-diameter pipe.
Support member 4 and the rod member 2 loosely inserted into the
Between the locking portion 6a and the other threaded locking pressing member 6 which is screwed to the screw portion 3a of the large diameter. Locking material 5 supported on the inner wall of the pipe so that it can be pressed against it
And a lock device X comprising: Because of this inner and outer configuration, when rotating large and small diameter pipes,
Since the locking pressing member 6 of the locking device X rotates and is screwed with the thread portion of the rod member 2, the locking pressing member 6 moves to the locking supporting member 4 side and expands the locking member 5 in the radial direction to increase the diameter of the locking member 5. Close to the inner surface of the pipe. Thus, it can be easily and reliably fixed at the desired extended position. In addition, a short pipe configuration can be obtained during storage.

In a telescopic pole for accommodating a small-diameter pipe in a large-diameter pipe in a stretchable manner, a rod member 2 'with a threaded portion 3a' is attached to the end of the small-diameter pipe, and a threaded portion 3a of the rod member 2 'is provided. 'Lock pressing member 6' which can be screwed into
The rod member 2 'can be radially expanded by the clamping force of the locking support 4' on the locking pressing member 6 'side of the rod member 2' and the locking pressing member 6 ', and can be pressed against the inner wall of a large-diameter pipe. And a lock device X 'including a lock member 5'. With such a configuration, the configuration of the rod member constituting the lock device X 'can be further simplified.

Since the inner wall surfaces of the inner and outer pipes are polygonal, the strength is excellent. At the same time, the rod member of the lock device X is engaged with the corner of the inner wall of the polygon, so that the axial movement between the pipes can be smoothly guided, and the rotation of the large-diameter pipe when fixed is ensured. Can be Furthermore, small diameter pipes are sequentially placed inside the large diameter pipe,
Alternatively, a large-diameter pipe can be sequentially connected to the outside of the small-diameter pipe, and a lock device is provided at the end of the pipe so that the length position can be appropriately locked. Obtainable.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, and is a cross-sectional view at the time of storage.

FIG. 2 is an exploded perspective view of the lock device according to the first embodiment.

FIG. 3 shows an expanded state of a telescopic pole of the first embodiment.

FIG. 4 is a longitudinal sectional view of the inner and outer pipes.

FIG. 5 is a detailed view of a tip cap fixed to an end of a pipe.

FIG. 6 is a detailed view of a rod member fixed to the other end of the pipe.

FIG. 7 is a detailed view of a lock support member constituting the lock device.

FIG. 8 is a detailed view of a lock member.

FIG. 9 is a detailed view of a lock pressing member.

FIG. 10 is a detailed view of a cap.

FIG. 11 is a detailed view of a stop cap.

FIG. 12 is a detailed view of a rear cap attached to an end of a pipe.

FIG. 13 is a cross-sectional view of the second embodiment of the present invention when a three-piece telescopic pole is stored.

FIG. 14 is a cross-sectional view of a three-piece telescopic pole of the second embodiment when it is extended.

15 (a) is a sectional view of a main part of a lock device, and FIG. 15 (b) is a sectional view of a main part of a pipe in a third embodiment of the present invention.

FIG. 16 is an exploded view of the lock device according to the third embodiment.

17 shows an example of a three-piece telescopic pole in the embodiment of FIG.

FIG. 18 is a sectional view of a main part of a fourth embodiment of the present invention,
(b) is an exploded view.

[Explanation of symbols]

A, B stretch port - Le A ₁ small diameter pipe A ₂ diameter pipes A ₃ additional pipe X, X ', X "lock 1 tip cap 1a base portion 1b projecting parts 1c head 1d stop portion 1e hole 1f rod 1g b -Let 1h Rib 1i Recess 2,2 'Rod member 2a Projection 2b Recess 2c Boss 3,3' Rod 3a, 3a 'Screw 3b Head 3c Hole 4,4' Lock support 4a Inclined surface 4b Large diameter Part 4c Cylindrical part 4d Countersink hole 4e Through hole 4f Cut part 4g, 6g Projection 5, 5 'Lock material 5a Hole 6, 6' Lock pressing material 6a Hole 6a 'Screw part 6b Cut part 6c Screw part 7, 7' Rear cap 7a Body 7b Umbrella 7c Engagement 7d Stop 8 Pin 9, 9 'Stop cap 9a, 9a' Base cylinder 9b Recess 9b 'Stop 9c, 9c' Lock 9d Engage 10,10 ″ Cap 10a Locking portion 10b Hole 10c Insertion hole 11 Connecting device 12, 12 ″ Retaining ring

Claims (7)

(57) [Claims] 1. A large diameter pipe (A ₂₎ expansion port telescopically housing the small diameter of the pipe (A ₁₎ in the - in the Le (A), threaded portion at an end of the small-diameter pipe (A ₁₎ The rod member (2) with (3a) is attached, and the rod member (2) is attached.
Between the support member (4) for locking, which is loosely inserted into the lock member, and the locking pressing member (6) with the other threaded portion which is screwed into the threaded portion (3a) of the rod member (2). A lock device (X) comprising a lock member (5) which expands in the radial direction by a clamping force between the support member (4) and the lock pressing member (6) and is supported so as to be able to press against the inner wall of the large-diameter pipe. ), At least the inner wall of the large-diameter pipe (A ₂ ) is formed in a polygonal cross section, and the outer wall of the polygonal inner wall of the large-diameter pipe (A ₂ ) is formed outside the lock support member (4). A telescopic pole having a locking projection for engaging with a corner. 2. A large-diameter pipe (A ₂ ) having an inner wall formed in a polygonal cross section, and a small-diameter pipe (A ₁ ) also formed in an inner wall having a polygonal shape. In the telescopic pole (A) which can be fixed by X), the lock device (X) includes a rod member (2), a lock support member (4), a lock member (5), and a lock pressing member. The rod member (2) includes a rod (3) connected at one end to an end of a small-diameter pipe (A ₁ ) and a screw end (3a) at the other end. A large diameter portion (4b) having a through hole (4e) in the center thereof for passing the rod (3) and having a locking projection (4g) formed on the outer periphery, and a large diameter portion (4b). A cylindrical portion (4c) provided with an inclined surface (4a) following (4b) and a rotation preventing cut (4f) following the inclined surface (4a). The lock member (5) is made of an elastic material, and has a hole (5a) in the center of which the cylindrical portion (4c) of the lock support member (4) fits. ), The cylindrical portion (4c) of the lock supporting member (4) is inserted into the center, and the cylindrical portion (4) is inserted.
c) a hole (6a) having a cut portion (6b) for preventing rotation corresponding to the cut portion (4f), and a screw portion (3a) provided at the end of the rod (3) at the end. A telescopic pole having a screw portion (6c) to be screwed. 3. A large diameter pipe (A ₂₎ expansion port telescopically housing the small diameter of the pipe (A ₁₎ in the - in the Le (A), the small diameter of the pipe (A ₁₎ threaded portion on the end ( 3a ') and the attached rod member (2') is attached.
), A locking pressing member (6 ′) that can be screwed into the screw portion (3a ′), and a locking supporting portion (2a ′) on the locking pressing member (6 ′) side of the rod member (2 ′). It expands in the radial direction by the pinching force of the lock pressing member (6 ′),
Lock material (5 ') that can be pressed against the inner wall of the large-diameter pipe
Wherein the inner wall of at least the large-diameter pipe (A ₂ ) is formed in a polygonal cross section,
And stretch port, characterized in that the locking projection of the corners engage the polygonal inner wall of the large-diameter pipe (A ₂₎ on the outside of the locking pressing member (6 ') is formed - Le . 4. A large-diameter pipe (A ₂ ) having an inner wall formed in a polygonal cross section, and a small-diameter pipe (A ₁ ) also formed in an inner wall having a polygonal shape is accommodated in a stretchable manner. X
In the telescopic pole which can be fixed with the lock member (X ′), the lock device (X ′) includes the rod member (2 ′) and the lock member (5).
'), A locking pressing member (6'), and a retaining ring (12 ') for preventing the locking pressing member (6') from coming off. The rod member (2 ') has a small-diameter pipe ( A ₁₎
Of the large diameter portion (2b ') and the large diameter portion (2b').
′) And a threaded portion (3a) concentric with the inclined surface (2a ′), and the locking member (5 ′) has a polygonal outer periphery and the rod The lock pressing member (6 ') has a through hole (5a') through which the screw portion (3a ') of the member passes, and the screw member (3a') of the rod member (2 ') is screwed to the center. Screw part to be combined (6a ')
A telescopic pole, wherein the outer periphery has the same polygonal shape as the inner wall of a large-diameter cylinder. 5. The lock member is made of any one of a rubber material, a rubber-like synthetic resin material, a metal spring material, and a block member that is divided or expanded in a circumferential direction, and is composed of a rod member and a lock pressing member. 5. The telescopic pole according to claim 1, wherein the telescopic pole can be expanded in a radial direction by a clamping force. 6. The expansion and contraction according to claim 1, wherein a conical inclined surface is provided on the locking member side of the locking pressing member, and the locking member can be expanded in the radial direction by a clamping force of the locking pressing member. Poles. 7. A medium-diameter pipe having a locking device in a large-diameter pipe, and a plurality of small-diameter pipes having a locking device in the medium-diameter pipe are sequentially housed and connected to be extendable and contractible. The stretchable pole according to claim 1.