JP3666772B2 - Telescopic rod - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telescopic bar-like tool suitable for use as a handle of a cleaning tool.
[0002]
[Prior art]
Conventionally, as a handle of a folding umbrella, as described in Japanese Utility Model Publication No. 56-26571, the rotation can be locked by deforming a part of the cross-section of the large and small pipes in the circumferential direction and engaging them in the axial direction. Furthermore, a ball-shaped convex part is provided at the end of the small pipe so that it can be deformed to the inside of the pipe. Some are lockable.
[0003]
[Problems to be solved by the invention]
However, the prior art has the following problems.
{Circle around (1)} Since the rotation lock means is regulated by the pipe cross-sectional shape, a concave portion is visible on the outer surface of the pipe and the appearance is impaired.
[0004]
(2) The deformation of the cross section of the pipe constituting the rotation lock means extends over the entire length of the pipe, and it is difficult to improve the dimensional accuracy of the cross sectional shape over the entire length of the pipe, resulting in a looseness of the rotation lock.
[0005]
(3) The deformation of the cross section of the pipe constituting the rotation lock means extends over the entire length of the pipe. For example, when fitting so that n pipes forming n stages are expanded and contracted, (n-1 ) It is necessary to provide a single groove or the like, which makes it difficult to make multiple stages.
[0006]
(4) The length lock means is configured to engage and disengage the ball to and from the hole. When the ball is extended and contracted, the ball is similarly taken out of the hole. The hard engagement is not possible.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a telescopic rod-like tool that can be rotationally locked without impairing the appearance and facilitate multi-stages.
[0008]
Another object of the present invention is to obtain a length lock structure that is light in the extending direction and hard in the contracting direction.
[0009]
[Means for Solving the Problems]
The present invention according to claim 1 is an extendable bar-like tool used for a handle of a cleaning tool formed by fitting a plurality of tubular bodies so as to be stretchable, and a slider provided at the tip of the small-diameter tubular body. The slider is slidably inserted into the inner peripheral portion of the large-diameter cylindrical body, and the slider includes a bottom portion fixed to the small-diameter cylindrical body and a skirt portion extending in a short cylindrical shape from the outer edge of the bottom portion. A guide rib extending in the axial direction on the inner peripheral part of the large-diameter cylindrical body with a narrow groove provided along the axial direction in the outer peripheral part of the bottom part and a wide groove provided along the axial direction of the skirt part The rotation between the cylindrical bodies that expand and contract by being engaged with each other can be locked, and the protrusions provided in the circumferential direction on the outer peripheral part of the skirt part of the slider are connected to the inner peripheral part of the large-diameter cylindrical body. During insertion, the diameter of the skirt of the slider is reduced due to the presence of the wide groove in the skirt, Are engaged with each of the extension-side lock groove and the contraction-side lock groove provided on the inner peripheral portion near both ends of the large-diameter cylindrical body, and the contraction diameter of the skirt portion of the slider is released to expand and contract each other. The length of expansion and contraction between the cylindrical bodies can be locked, and the ridge portion of the skirt portion of the slider is provided at a diametrical position perpendicular to the diametrical direction including the wide groove when viewed in the axial direction of the slider. Both the extension-side lock groove and the contraction-side lock groove of the cylindrical body are provided with an unlocking taper toward the axial center of the cylindrical body, and the lock-release taper of the extension-side lock groove is used to lock the contraction-side lock groove. The taper is set to be steeper than the release taper.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
1 is a schematic diagram illustrating an example of a cleaning tool, FIG. 2 is a schematic diagram illustrating a handle of the cleaning tool, FIG. 3 is a schematic diagram illustrating a portion III of FIG. 1, and FIG. 4 is a schematic diagram illustrating a displacement state of a slider. 5 is a sectional view taken along lines VA-VA and VB-VB in FIG. 4, FIG. 6 is a schematic diagram showing a sliding state of the handle, FIG. 7 is a schematic diagram showing a slider, and FIG. FIG. 9 is a schematic diagram showing a plurality of protrusions of the slider. FIG.
[0025]
The cleaning tool 10 is configured by attaching a cleaning cloth 13 provided with a wiping portion 14 and a knocking portion 15 to a head 12 provided at a tip portion of a handle 11.
[0026]
When using the cleaning tool 10, the head 12 is first screwed onto the handle 11. Next, the head 12 is mounted and fixed so as to cover the cleaning cloth 13, and the assembly of the cleaning tool 10 is completed.
[0027]
And a table etc. with a comparatively large area wipes off dust mainly using the wiping part 14 of the cleaning cloth 13. Further, when used as a duster, the duster 15 is used to absorb the dust. Further, the handle 11 is used in a contracted state for wiping and cleaning the hand, and when the wiping and cleaning such as a high place or a deep gap is performed, the handle 11 is used in an extended state.
[0028]
When the cleaning cloth 13 becomes very dirty, the cleaning cloth 13 is separated from the head 12. Then, a new cleaning cloth is replaced as necessary for cleaning.
[0029]
The handle 11 is mainly composed of two or more cylindrical bodies, in the present embodiment, three cylindrical bodies of a large cylindrical body 31, an intermediate cylindrical body 32, and a small cylindrical body 33, and is extendable. It is said. Between the large tubular body 31 and the middle tubular body 32, the large tubular body 31 constitutes a large diameter tubular body, the middle tubular body 32 constitutes a small diameter tubular body, and the middle tubular body 32 and the small tubular body 33. The middle cylindrical body 32 constitutes a large-diameter cylindrical body, and the small cylindrical body 33 constitutes a small-diameter cylindrical body. The cross-sectional shape of each of the cylindrical bodies 31 to 33 is not limited to a circle but may be an ellipse or a polygon. Moreover, the constituent material of each cylindrical body 31 to 33 is preferably made of vinyl chloride, ABS, PE, PP, PET, aluminum, or an alloy thereof.
[0030]
Specifically, as shown in FIGS. 2 to 4, the handle 11 press-fits the press-fitting protrusion 34 </ b> A of the end cap 34 into the enlarged-diameter groove 31 </ b> A provided on one end opening side of the large cylindrical body 31 serving as a grip portion. The press-fitting projection 35B of the press-fitting fitting portion 35A of the intermediate slider 35 is press-fitted into the enlarged diameter groove 32A provided on the one end opening side of the middle cylindrical body 32, and provided on the one end opening side of the small cylindrical body 33. The press-fitting protrusion 36B of the press-fitting fitting portion 36A of the small slider 36 is press-fitted into the enlarged diameter groove 33A. Then, the middle slider 35 press-fitted into the middle tubular body 32 from the other end opening of the large tubular body 31 is slidably inserted, and the other end opening of the middle tubular body 32 is pressed into the small tubular body 33. By inserting the small slider 36 slidably, the cylindrical bodies 31 to 33 are fitted to each other so as to be extendable and contractible. Further, the male screw member of the head 12 is connected to the female screw member provided at the other end opening of the small cylindrical body 33 via the finger hook portion 37. The end cap 34 has a hooking hole 34B so that the cleaning tool 10 can be hooked on a fastener such as a hook.
[0031]
(A) Between the large cylindrical body 31 and the middle cylindrical body 32, a rotation locking means and a length locking means are provided.
[0032]
Here, as shown in FIG. 7, the middle slider 35 includes a wide wall plate-like bottom portion 35 </ b> C fixed to the middle cylindrical body 32 via a press-fit fitting portion 35 </ b> A, and a short cylindrical shape from the outer edge of the bottom portion 35 </ b> C. And a skirt portion 35D extending in the direction.
[0033]
As shown in FIGS. 3 to 5, the rotation lock means includes a narrow groove 35 </ b> E provided along the axial direction at two positions in the diameter direction that forms 180 degrees in the circumferential direction at the outer peripheral portion of the bottom portion 35 </ b> C of the middle slider 35. And a wide groove 35F provided so as to be coaxial with the narrow groove 35E along the axial direction at two positions in the diameter direction that forms 180 degrees in the circumferential direction of the skirt portion 35D, in the circumferential direction at the inner diameter portion of the large cylindrical body 31. It is engaged with the guide rib 31B extending along the entire axial direction at each of two positions forming 180 degrees. The narrow groove 35E and the wide groove 35F of the middle slider 35 are guided by the guide rib 31B of the large cylindrical body 31, and in particular the narrow groove 35E is engaged with the guide rib 31B to lock both the cylindrical bodies 31 and 32 (see FIG. 5 (A), (B)).
[0034]
Further, as shown in FIGS. 3 to 5, the length lock means is provided along the circumferential direction at two positions in the diametrical direction perpendicular to the diametrical direction including both wide grooves 35F and 35F on the outer periphery of the skirt portion 35D of the middle slider 35. The provided protrusion 35G is engaged with each of the extension side lock groove 31C and the contraction side lock groove 31D provided in each of the inner diameter portions near both ends of the large cylindrical body 31. The protruding portion 35G of the slider 35 is engaged with the extending side locking groove 31C of the large cylindrical body 31 to lock both the cylindrical bodies 31, 32 in the extended position (FIG. 4A). 35G is engaged with the contraction side lock groove 31D of the large cylindrical body 31 to lock both the cylindrical bodies 31, 32 in the contracted position (FIG. 4C).
[0035]
As shown in FIG. 6, when the inner cylindrical body 32 is extended and contracted by sliding the inner diameter portion of the large cylindrical body 31, the protrusion 35 </ b> G of the intermediate slider 35 is moved in the axially intermediate portion of the large cylindrical body 31. The intermediate outer diameter portion of the intermediate cylindrical body 32 is slidably supported by the inner diameter portion of the axial end portion of the large cylindrical body 31, and as a result, the axial direction of the intermediate cylindrical body 32 is supported. These two positions are supported at two points to prevent the shafts 31 and 32 from shaking. At this time, the skirt portion 35D provided with the protrusion 35G of the intermediate slider 35 is reduced in diameter in a sliding contact state with the large cylindrical body 31 due to the presence of the wide groove 35F, and elastically expands in the diameter direction. A diameter habit is imparted, and by this elastic diameter-expanding habit, the ridge 35G is stably brought into sliding contact with the inner surface of the large cylindrical body 31 with a certain pressure. When the cylindrical bodies 31 and 32 are set to either the extended position or the contracted position, the protrusion 35G of the middle slider 35 is either the extension side lock groove 31C or the contraction side lock groove 31D of the large cylindrical body 31. The above-mentioned elastic diameter-expanding behavior is temporarily lost and the stress is released, and it is possible to prevent the occurrence of sag due to unnecessary reduction of the diameter of the protrusion 35G. Yes.
[0036]
Further, the extension side lock groove 31C and the contraction side lock groove 31D of the large cylindrical body 31 are provided with unlocking tapers 101 and 102, respectively, which are closer to the axial center of the large cylindrical body 31 as shown in FIG. Then, the unlocking taper 101 (FIG. 8B) of the extension side locking groove 31C is set to be steeper than the unlocking taper 102 (FIG. 8A) of the contraction side locking groove 31D. ing.
[0037]
(B) Between the middle cylindrical body 32 and the small cylindrical body 33, the same rotation locking means and length locking means as those between the large cylindrical body 31 and the middle cylindrical body 32 are provided.
[0038]
That is, like the middle slider 35, the small slider 36 has a bottom portion 36C having a wide wall plate fixed to the small tubular body 33 via a press-fit fitting portion 36A, and a short tubular shape from the outer edge of the bottom portion 36C. And a skirt portion 36D extending in the direction.
[0039]
The rotation lock means is provided in the circumferential direction of the narrow groove 36E and the skirt portion 36D provided along the axial direction at two positions in the diametrical direction at 180 ° in the circumferential direction on the outer peripheral portion of the bottom portion 36C of the small slider 36. A wide groove 36F provided so as to be coaxial with the narrow groove 36E along the axial direction at two positions in the diameter direction forming 180 degrees, and two positions forming 180 degrees in the circumferential direction at the inner diameter portion of the intermediate cylindrical body 32. Each is engaged with a guide rib 32B extending along the entire axial direction. The narrow-width groove 36E and the wide-width groove 36F of the small slider 36 are guided by the guide rib 32B of the intermediate cylindrical body 32. In particular, the narrow-width groove 36E is engaged with the guide rib 32B to lock both the cylindrical bodies 32 and 33 in rotation.
[0040]
Further, the length lock means includes a protrusion 36G provided along the circumferential direction at two positions in the diametrical direction perpendicular to the diametrical direction including both wide grooves 36F and 36F on the outer periphery of the skirt portion 36D of the small slider 36. The cylindrical body 32 is engaged with each of an extension-side lock groove 32C (not shown) and a contraction-side lock groove 32D provided in the inner diameter portions near both ends. The protrusions 36G of the small slider 36 are engaged with the extension-side lock grooves 32C of the intermediate cylindrical body 32 to lock the cylindrical bodies 32, 33 in the extended position, and the protrusions 36G of the small slider 36 are connected to the intermediate cylinder. The cylindrical bodies 32 and 33 are locked in the contracted positions by engaging with the contraction side lock grooves 32D of the cylindrical body 32.
[0041]
When the small cylindrical body 33 is slid and expanded and contracted by sliding the inner diameter portion of the middle cylindrical body 32, the protrusion 36G of the small slider 36 is set to the inner diameter portion of the intermediate portion in the axial direction of the middle cylindrical body 32. While being slidably supported, the intermediate outer diameter portion of the small cylindrical body 33 is slidably supported by the inner diameter portion of the axial end portion of the intermediate cylindrical body 32, and as a result, two positions in the axial direction of the small cylindrical body 33. Is supported at two points to prevent axial displacement of both cylindrical bodies 32 and 33. At this time, the skirt portion 36D provided with the ridge portion 36G of the small slider 36 is reduced in diameter in a fitted sliding contact state with the intermediate cylindrical body 32 due to the presence of the wide groove 36F, and is elastic in the diameter direction. A diameter expansion habit is imparted, and this elastic diameter expansion habit function allows the ridge portion 36G to be stably slidably brought into contact with the inner surface of the intermediate cylindrical body 32 with a certain pressure. When the cylindrical bodies 32 and 33 are set to either the extended position or the contracted position, the protrusion 36G of the small slider 36 is formed on the extension side locking groove 32C and the contraction side locking groove 32D of the middle cylindrical body 32. It can be accommodated in any diameter expansion state to temporarily lose the above-mentioned elastic diameter expansion behavior and release stress, thereby preventing the occurrence of sag due to unnecessary reduction in diameter of the protrusion 36G. It is said.
[0042]
Further, both the extension-side lock groove 32C and the contraction-side lock groove 32D of the intermediate cylindrical body 32 are provided with unlocking tapers 201 and 202 (not shown) that are directed toward the center in the axial direction of the intermediate cylindrical body 32. The unlocking taper 201 of the extension side locking groove 32C is set to be steeper than the unlocking taper 202 of the contraction side locking groove 32D.
[0043]
Therefore, according to the present embodiment, there are the following operations. In the following description of the action, in the handle 11, the phase expansion / contraction structure portion of the large cylindrical body 31 and the intermediate cylindrical body 32 will be described as a representative, but the phase expansion / contraction of the intermediate cylindrical body 32 and the small cylindrical body 33 will be described. The same applies to the structure portion.
[0044]
(1) The rotation can be locked by engagement of the guide rib 31B of the large cylindrical body 31 and the narrow groove 35E of the middle slider 35 provided in the middle cylindrical body 32, and the locking grooves 31C and 31D of the large cylindrical body 31 and the middle cylindrical shape can be locked. The length can be locked by engaging with the protrusion 35G of the middle slider 35 provided on the body 32. At this time, the guide rib 31B constituting the rotation locking means, the narrow groove 35E of the middle slider 35, the locking grooves 31C and 31D constituting the length locking means, and the protrusion 35G of the middle slider 35 are in the cylindrical body 31. , 32 is provided, and the appearance is not impaired.
[0045]
(2) Since the groove (narrow groove 35E) on the side of the middle slider 35 that engages with the guide rib 31B of the large cylindrical body 31 so as to constitute the rotation lock means is provided in the bottom portion 35C of the middle slider 35, The groove width and groove position (groove position in the diameter direction of the large cylindrical body 31) are stable around the bottom portion 35C, and the guide rib 31B stabilizes the guide, in other words, it can be rotated and locked. On the other hand, when only the groove (wide groove) provided in the skirt portion 35D of the middle slider 35 is a groove to be engaged with the guide rib 31B for rotation lock, the skirt portion 35D of the skirt portion 35D is on the expansion side or the contraction side. The protrusion 35G engages with the lock grooves 31C and 31D of the large cylindrical body 31 to lock the length, and the skirt 35D expands in the diameter direction including the protrusion 35G, and the opposite wide groove When the diameter of the wide groove is reduced, the groove width of the wide groove becomes wider than the guide rib 31B of the large cylindrical body 31 to cause play in the groove width direction, and the groove position of the wide groove (diameter direction of the large cylindrical body 31). The groove position) rises from the inner surface of the large cylindrical body 31 and is easily detached from the guide rib 31B.
[0046]
(3) Since the protrusion 35G of the intermediate slider 35 provided in the intermediate cylindrical body 32 is provided in the skirt portion 35D and the wide groove is provided in the skirt portion 35D, the diameter of the skirt portion 35D is elastically expanded and reduced. The protrusion 35G of the middle slider 35 can be lightly removed from the engagement with the lock grooves 31C and 31D of the large cylindrical body 31 at the length lock position.
[0047]
(4) When the length is locked, the protrusion 35G of the middle slider 35 provided in the middle cylindrical body 32 is engaged with the lock grooves 31C and 31D of the large cylindrical body 31 and spreads, and the stress of the middle slider 35 can be released. Therefore, it is possible to prevent deterioration of the elastic expansion / contraction function (3) of the skirt portion 35D in the middle slider 35. When the ridge 35G provided on the skirt 35D of the middle slider 35 is continuously pressed by the inner surface of the large cylindrical body 31 and the diameter of the skirt 35D is continuously reduced, the elastic expansion of the above (3) is performed. Diameter function will deteriorate.
[0048]
{Circle around (5)} When the handle 1 is multi-staged, each cylindrical body 31, 32 is a means for locking rotation with the other cylindrical bodies 31, 32 to be phase-fitted (large cylindrical body 31 Only the guide rib 31B on the side, the narrow groove 35E of the middle slider 35 on the middle cylindrical body 32 side, and means for locking the length (the locking grooves 31C and 31D on the large cylindrical body 31 side, the middle cylindrical body 32). On the side, it is sufficient to provide only the protrusion 35G) of the middle slider 35, and there is no special difficulty due to the multi-stage.
[0049]
(6) The unlocking taper 101 of the extension side lock groove 31C is set to be steeper than the unlocking taper 102 of the contraction side lock groove 31D. Therefore, when the handle 1 is retracted from the extended state, the protrusion 35G of the middle slider 35 needs to get over the steep unlocking taper 101 from the extension-side lock groove 31C, and is hard and difficult to contract. For this reason, it can prevent that the cleaning tool 10 used in an extended state becomes easy to shrink easily by addition of cleaning power. Then, when extending from the contracted state, the protrusion 35G of the middle slider 35 may be lightly slid along the gentle-release lock release taper 102 from the contraction side lock groove 31D, and it is easy to extend.
[0050]
(7) By using the middle slider 35 as a separate part, a material having good elasticity and slidability can be applied. Moreover, the cylindrical bodies 31 and 32 are inexpensive materials, and an inexpensive processing method such as extrusion processing can be employed.
[0051]
(8) The handle 11 was used as the handle of the cleaning tool 10. Therefore, in this cleaning tool 10, the handle 11 is extended to a high cleaning position and the handle 11 is shortened to a low cleaning position to improve the cleaning workability, or to be compactly stored at the time of storage. It can be improved.
[0052]
In addition, in the handle | steering_wheel 11, the structure of FIG. 9 can also be employ | adopted in the phase expansion-contraction structure part of the large cylindrical body 31 and the intermediate cylindrical body 32 (the intermediate cylindrical body 32 and the small cylindrical body 33).
[0053]
That is, the middle slider 35 is provided with first and second protrusions 35G1 and 35G2 at a plurality of positions along the axial direction of the outer periphery of the skirt portion 35D, for example, two positions, respectively. Each includes first and second extension side lock grooves 31C1, 31C2 and first and second contraction side lock grooves 31D1, 31D2.
[0054]
Of the two extension-side lock grooves 31C1, 31C2 provided in the inner diameter portion near one end of the large cylindrical body 31, the first extension-side lock in which the first protrusion 35G1 near the bottom portion of the middle slider 35 is engaged and disengaged. The groove 31C1 has a wide width having a play groove width wa in the unlocking direction (wider than the second extension side lock groove 31C2).
[0055]
Further, of the two contraction side lock grooves 31D1, 31D2 provided in the inner diameter portion near the other end of the large cylindrical body 31, the first contraction side where the first protrusion 35G1 near the bottom portion of the middle slider 35 is engaged and disengaged. The lock groove 31D1 has a wide width (wider than the second contraction side lock groove 31D2) having a play groove width wb (not shown) in the unlocking direction.
[0056]
This has the following effects.
(1) The number of protrusions 35G of the middle slider 35 is set to a plurality of, for example, two, and the first protrusion 35G1 near the bottom of the two first and second extension-side lock grooves 31C1 and 31C2 is engaged and disengaged. Since the first extending-side lock groove 31C1 is widened, the second protrusion 35G2 which is easy to bend on the tip side (anti-bottom side) of the skirt portion 35D first when the contraction is reduced from the extended state. The skirt portion 35D of the intermediate slider 35 can already be removed from the extension-side lock groove 31C2 even when the subsequent first protrusion 35G1 is released from the first extension-side lock groove 31C1. Because it is slightly reduced in diameter, it is easy to remove it.
[0057]
(2) Since the first contraction-side lock groove 31D1 in which the first protrusion 35G1 near the bottom of the two first and second contraction-side lock grooves 31D1, 31D2 engages and disengages is widened, the contraction When extending from the state, the second protrusion 35G2 which is easily bent at the tip side (the side opposite to the bottom) of the skirt portion 35D can be easily removed from the corresponding second contraction side lock groove 31D2, and the second Even when the first protrusion 35G1 is disengaged from the first contraction-side lock groove 31D1, the skirt 35D of the intermediate slider 35 has already been slightly reduced in diameter by the second protrusion 35G2, so that it can be easily removed.
[0058]
Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention. For example, the telescopic rod-shaped tool of the present invention is not limited to the three, large, medium and small cylindrical bodies, and may be composed of two or four or more cylindrical bodies.
[0059]
Further, the length lock means is provided not only at the maximum extension position and the minimum extension position of the extension length range of the large cylindrical body 31 and the middle cylindrical body 32, for example, but at the intermediate extension position (single position or a plurality of positions), Multi-stages of the length lock stage of the handle 11 may be achieved.
[0060]
【The invention's effect】
As described above, according to the present invention, the telescopic rod-like tool can be rotationally locked without impairing the appearance and can be easily multistaged.
[0061]
Further, according to the present invention, it is possible to obtain a length lock structure that is light in the extending direction and hard in the shrinking direction.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of a cleaning tool.
FIG. 2 is a schematic diagram showing a handle of a cleaning tool.
FIG. 3 is a schematic diagram showing part III of FIG. 1;
FIG. 4 is a schematic diagram showing a displacement state of a slider.
FIG. 5 is a cross-sectional view taken along lines VA-VA and VB-VB in FIG. 4;
FIG. 6 is a schematic view showing a sliding state of the handle.
FIG. 7 is a schematic diagram showing a slider.
FIG. 8 is a schematic diagram showing a lock releasing taper of a lock groove of a cylindrical body.
FIG. 9 is a schematic diagram showing a plurality of protrusions on the slider.
[Explanation of symbols]
10 Cleaning tool 11 Handle (Extensible stick-shaped tool)
31 Large cylindrical body 31B Guide rib 31C Extension side lock groove 31C1 First extension side lock groove 31C2 Second extension side lock groove 31D Contraction side lock groove 31D1 First contraction side lock groove 31D2 Second contraction side lock groove 32 Cylindrical body 32B Guide rib 32C Expansion side lock groove 32D Contraction side lock groove 33 Small cylindrical body 35, 36 Slider 35C, 36C Bottom part 35D, 36D Skirt part 35E, 36E Narrow groove 35F, 36F Wide groove 35G, 36G Projection Part 35G1 first protrusion 35G2 second protrusion 101, 102 unlocking taper wa idle groove width

Claims (3)

A telescopic rod-like tool used for a handle of a cleaning tool formed by fitting a plurality of cylindrical bodies so as to be stretchable,
A slider provided at the tip of the small-diameter cylindrical body is slidably inserted into the inner periphery of the large-diameter cylindrical body,
The slider includes a bottom portion fixed to the small-diameter cylindrical body, and a skirt portion extending in a short cylindrical shape from the outer edge of the bottom portion,
A narrow groove provided along the axial direction on the outer peripheral portion of the bottom portion of the slider and a wide groove provided along the axial direction of the skirt portion extend along the axial direction on the inner peripheral portion of the large-diameter cylindrical body. The rotation between the cylindrical bodies expanding and contracting can be locked by engaging with the guide rib.
The protrusion provided in the circumferential direction on the outer peripheral portion of the skirt portion of the slider reduces the diameter of the skirt portion of the slider due to the presence of the wide groove of the skirt portion when the slider is inserted into the inner peripheral portion of the large-diameter cylindrical body. The slider skirt is reduced in diameter in a state in which the protrusion is engaged with each of the expansion side lock groove and the contraction side lock groove provided on the inner peripheral portion near both ends of the large-diameter cylindrical body. The lockable expansion / contraction length between the cylindrical bodies expanding and contracting,
The ridge portion of the skirt portion of the slider is provided at a diametrical position orthogonal to the diametrical direction including the wide groove, as viewed in the axial direction of the slider,
Both the extension side lock groove and the contraction side lock groove of the cylindrical body are provided with a taper for unlocking toward the axial center of the cylindrical body,
A telescopic rod-like tool in which the unlocking taper of the extension side locking groove is set to be steeper than the unlocking taper of the contraction side locking groove. The slider includes the protrusions at each of a plurality of positions along the axial direction of the outer periphery of the skirt portion, and a plurality of extension-side lock grooves and a plurality of contraction-side lock grooves on each of the inner peripheral portions near both ends of the cylindrical body. With
Of the plurality of extension-side lock grooves provided on the inner peripheral portion near one end of the cylindrical body, the extension-side lock groove on which the protrusion near the bottom portion of the slider engages and disengages is wide with an idle groove width in the unlocking direction. And
Of the plurality of contraction-side lock grooves provided on the inner peripheral portion near the other end of the cylindrical body, the contraction-side lock groove that engages and disengages the protrusion near the bottom portion of the slider is wide with a play groove width in the unlocking direction. The telescopic rod-shaped tool according to claim 1, wherein   The telescopic rod-shaped tool according to claim 1 or 2, wherein the slider is formed as a separate part from the small-diameter cylindrical body.

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