JP5226966B2 - Bar for cleaning tool - Google Patents

Description

The present invention relates to a rod-shaped tool for a cleaning tool .

As a cleaning tool rod-shaped tool, as described in Patent Document 1, there is one in which an inner shaft is inserted into a hollow portion of an outer shaft and is connected to be extendable in the axial direction. This rod-shaped tool incorporates an inner shaft from the base end portion of the outer shaft and is connected to be extendable in the axial direction. By engaging and disengaging with the through holes provided on the respective sides, the most extended state and the most contracted state are set. Then, a flange portion provided on the base end side of the outer surface of the inner shaft is brought into contact with a stepped stopper portion provided on the distal end side of the inner surface of the outer shaft to prevent the outer shaft and the inner shaft from coming off. The outer shaft and the inner shaft are prevented from rotating by engaging the protrusions provided on the flange portion of the inner shaft with the non-rotating sliding recess extending in the axial direction of the inner surface, and the end cap is provided at the base end of the outer shaft. It is configured by fitting.
JP2004-49628

The rod-shaped tool described in Patent Document 1 has the following problems.
(1) With the rod-like tool in the most extended state and the most contracted state, the locking projection of the elastic arm provided at the proximal end portion of the inner shaft fits into the through holes provided at the distal end side and the proximal end side of the outer shaft. The movement of the outer shaft and the inner shaft in the axial direction is restricted, but a slight gap (play) between the locking projection and the through-hole for smooth insertion of the locking projection makes it locked. Axial play remains. Also, since a gap for smooth expansion and contraction is required between the inner shaft and the outer shaft, radial backlash remains in the locked state (there is no backlash between the outer shaft and the inner shaft because there is no structure for suppressing backlash). Tsuku).

  (2) The outer shaft and the inner shaft are prevented from rotating by simply engaging the protruding portion of the flange portion of the inner shaft with the non-rotating sliding recess of the outer shaft, and the gap between the recessed portion and the protruding portion. The backlash remains for the minute. Therefore, in the shaft connecting portion, if the shaft is left in three directions, the axial direction, the radial direction, and the circumferential direction, and the shafts are connected in multiple stages, the backlash of each connecting portion is added and a large backlash is generated between the hand and the tip. For this reason, it not only lacks a reliable detent, but also lowers the texture of the product.

  (3) A stopper provided on the front end side of the inner surface of the outer shaft is engaged with a flange portion provided on the base end side of the outer surface of the inner shaft to prevent the inner shaft from coming off. It is necessary to incorporate from the proximal end of. That is, in a multistage telescopic rod-like tool in which an inner shaft is inserted into an outer shaft and a small-diameter inner shaft is inserted by the inner shaft (becomes an intermediate outer shaft), the small-diameter inner shaft is moved from the tip of the outer-diameter outer shaft. I can't put it in. In addition, the elastic arm locking projection provided on the base end of the inner shaft is locked in the through hole provided on the outer shaft so that the extended state of both can be locked. When the locking projection of the elastic arm is provided at the base end, the inner shaft with a smaller diameter must already be inserted into the intermediate outer shaft, and the inner shaft with the second smallest diameter is the inner shaft with the second smallest diameter. It is necessary to insert all the inner shafts in order so that the second inner diameter shaft is inserted into the second inner diameter shaft. When the assembly of the plurality of shafts of the multistage telescopic rod-like tool cannot be performed in parallel, if the pre-process is delayed, the post-process is played and the assembly work efficiency is poor.

  Further, in this rod-shaped tool, it is necessary to incorporate the small-diameter inner shaft from the base end portion of the large-diameter outer shaft, and a member larger than the inner diameter of the large-diameter outer shaft cannot be provided at the distal end portion of the small-diameter inner shaft. Therefore, in order to connect the support body (head portion) to the tip of the minimum diameter inner shaft, it is necessary to provide a special-shaped connecting means (support handle 7) at the tip of the minimum diameter inner shaft, and the number of parts cannot be reduced. In addition, the tip of the minimum diameter inner shaft needs to be provided with a notch for providing the connecting means, and may be damaged.

  Moreover, in this rod-shaped tool, since the latching protrusion of the elastic arm is provided at the base end portion of the inner shaft, the length of the handle is increased by this amount. Further, since it is necessary to insert the inner shaft from the base end portion of the outer shaft, it is necessary to fit the cap to the base end portion of the outer shaft, and the length of the handle becomes longer by the fitting length of this cap. . As a result, the length of the handle becomes uselessly long.

  (4) The flange portion provided on the base end side of the outer surface of the inner shaft is engaged with the stepped stopper portion provided on the distal end side of the inner surface of the outer shaft to prevent the outer shaft from being removed. Over the entire length overlapping with the inner shaft, the diameter becomes larger by the amount of the stepped portion of the stepped stopper portion. In other words, the difference between the diameters of the outer shaft and the inner shaft is (thickness required for structural strength + stopper step) × 2 + gap, and this difference becomes a large barrier in the case of multi-stages. Therefore, it is difficult to design a compact multistage stretchable pattern.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a rod-shaped tool that can reliably prevent backlash between the outer shaft and the inner shaft, reliably prevent rotation, improve assemblability, and achieve compactness.

The invention of claim 1 is a cleaning tool rod-like tool in which an inner shaft is inserted into a hollow portion of an outer shaft and is connected to be extendable in the axial direction, and the outer shaft is pressed inwardly from the wall surface of the hollow portion. A pin is provided, and a pressing pin is pressed against the outer surface of the inner shaft by an elastic member, and a rib extending in the axial direction of the inner surface of the outer shaft and a groove extending in the axial direction of the inner shaft are slidably engaged with each other. There are two sliding portions, and the reaction force direction exerted by the two sliding portions of the rib and the groove on the press contact of the press pin and the press contact direction of the press pin are the outer shafts. And the ribs are triangular ribs, the grooves are triangular grooves, the pressing force due to the pressing contact of the pressing pins, and the two slides of the ribs and the grooves. the inner shaft is a cleaning tool for a wand is supported by three circumferential points by two reaction force received from the moving unit That.

According to a second aspect of the present invention, in the first aspect of the present invention, the rib extending in the axial direction of the inner surface of the outer shaft and the groove extending in the axial direction of the inner shaft are a long rib and a long groove. It is intended to be.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the inner shaft further includes an inclined surface on which the pressing pin can ride on the insertion end to the outer shaft, and a stopper groove on which the pressing pin can collide with the outer surface. The stopper groove is formed by a slope whose side wall surface at the insertion end to the outer shaft is substantially orthogonal to the insertion direction and whose wall surface facing this is open to the outside .

The invention of claim 4 is the invention of any one of claims 1 to 3 , further comprising a guide groove on the outer surface of the inner shaft for sliding the pressing pin .

The invention according to claim 5 is the invention according to any one of claims 1 to 4 , further comprising a stopper groove on the outer surface of the inner shaft capable of colliding with the pressing pin, wherein the stopper groove has at least one of the wall surfaces as an inclined surface, When the pressing pin abuts on the stopper groove, the tip of the pressing pin is configured to come into pressure contact with the inclined surface of the stopper groove .

The invention of claim 6, further in the invention of any one of claims 1 to 5, the first and second stopper grooves provided on the outer surface of the inner shaft, the second stopper groove in the outer surface of the inner shaft A first stopper groove capable of abutting the pressing pin is provided on the more distal end side, and the second stopper groove is formed by a slope with the distal end side wall surface substantially orthogonal to the insertion direction and the opposite wall surface opened to the outside. It has been done .

The invention of claim 7 is the invention of any one of claims 1 to 6 , further comprising a thickened portion having an enlarged diameter at the tip of the outer shaft .
The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the outer shaft and the inner shaft are hollow shafts, and end walls are provided at end portions of the respective base ends. It is.
The invention of claim 9 is a cleaning tool using the bar-shaped tool according to any one of claims 1 to 8.

(Claim 1) (Claim 1 is an effect of suppressing play)
(a) The inner shaft is supported by the pressing force of the pressing pin and the reaction force received from the two sliding surfaces on which both the inner shaft groove and the outer shaft rib slide (the two sliding surfaces are not parallel). Since the reaction force and the direction of the pressing force received from the two sliding surfaces are not parallel to each other, the inner shaft is supported at three points in the circumferential direction by the pressing force and the two reaction forces, and moves toward the axial center. Be energized. Therefore, the inner shaft can be prevented from moving in the radial direction and the circumferential direction in the cross section without play.

  Since the pressing pin presses against the peripheral surface of the inner shaft, the axial movement is also appropriately regulated by the frictional force. Therefore, the inner shaft can be connected and held without any play on the outer shaft.

  (b) the outer shaft is provided with a pressing pin that protrudes inward from the wall surface of the hollow portion, the pressing pin is pressed against the outer surface of the inner shaft by an elastic member, and the rib extends in the axial direction of the inner surface of the outer shaft; The groove extending in the axial direction of the inner shaft is slidably engaged with each other, and the sliding surface of the rib and the groove is configured to have an acute angle with respect to the pressure contact direction of the pressing pin. The pressing force applied to the inner shaft presses the groove (or rib) of the inner shaft against the rib (or groove) of the outer shaft, so that not only the rotation of the outer shaft and the inner shaft but also the backlash can be reliably secured.

  When there are two pairs of ribs and grooves separated in the circumferential direction of the outer shaft and the inner shaft, the outer shaft and the inner shaft are supported at three points separated in the circumferential direction in the cross section, and the backlash is further reduced. Certainty can be achieved.

  (c) The pressing force applied to the inner shaft by the pressing pin presses the groove (or rib) of the inner shaft against the rib (or groove) of the outer shaft, and there is no play between the groove of the inner shaft and the rib of the outer shaft. It can be engaged, and the detent of the outer shaft and the inner shaft can be ensured.

(d) By providing ribs and grooves in the cross section of the outer shaft and the inner shaft, their structural strength can be improved. The pressing pin and the elastic member may be integrated.
(Claim 2)
(e) The rib extended in the axial direction of the inner surface of the outer shaft and the groove extended in the axial direction of the inner shaft are a long rib and a long groove. Thereby, the above-mentioned effects (a) to (d) can be obtained over the entire axial direction of the outer surface and the inner surface.

(Claim 3 ) (Claim 3 can be assembled by inserting it from the front. Since a retaining step is not required, the outer diameter difference between the outer shaft and the inner shaft can be reduced.)

(f) Since the inner shaft is prevented from coming off by the abutment of the stopper groove provided on the inner shaft and the pressing pin provided on the outer shaft, a stepped stopper is provided on the inner surface of the outer shaft tip as in the conventional example. There is no need to provide a portion (small diameter portion). Therefore, the inner shaft can be inserted from the tip of the outer shaft. At the time of insertion, the pressing pin is guided by the inclined surface of the base end portion of the inner shaft and pushed outward. When the pressing pin is pushed into the stopper groove, the pressing pin returns inward and engages with the stopper groove. Since the base end side wall surface of the stopper groove is a surface substantially orthogonal to the axial direction, the inner shaft can be prevented from coming off in the pull-out direction by abutting against the side surface of the pressing pin.

  Moreover, since the wall surface (tip side wall surface) facing the stopper groove is an inclined surface opened to the outside, the inner shaft can be freely moved in the pushing direction.

(g) Since a small-diameter stopper is not provided at the outer shaft tip, the inner shaft can be inserted from the outer shaft tip. In addition, since the inclined surface on which the pressing pin can run is provided at the base end portion of the inner shaft, the assembly is completed simply by inserting the inner shaft with the pressing pin set on the outer shaft.

  Similarly, when assembling a multi-stage telescopic shaft, after setting the pressing pin on each outer shaft (axis other than the smallest diameter shaft), in any order (from the smallest diameter axis, from the largest diameter axis, from the middle) ) So good, just plug the inner shaft.

  Further, since the proximal end portion of the inner shaft is inserted from the distal end portion of the outer shaft, assembly is possible even when a cleaning head or the like is integrally provided at the distal end of the inner shaft.

(h) Since there is no need to provide a stepped stopper on the inner surface of the outer shaft tip, the difference in diameter between the inner shaft and the outer shaft can be reduced. That is, the difference in diameter is the thickness necessary for the structural strength × 2 + gap. The number of stages can be increased, and the length at the time of reduction can be made compact while maintaining the length at the time of extension.

  Further, since the base end portion of the inner shaft is not provided with a conventional elastic arm locking projection, the wasteful length due to this can be eliminated from the total length of the rod-shaped tool. Further, since the inner shaft can be inserted from the distal end portion of the outer shaft, it is not necessary to fit a cap to the base end portion of the outer shaft, and the waste length due to this can be eliminated from the entire length of the rod-shaped tool. Accordingly, the length of the rod-shaped tool is not wasted, and if the length of the rod-shaped tool at the time of contraction is the same as the conventional length, the length at the time of expansion becomes longer by the amount excluding the waste length.

(i) The inner shaft is provided with a slope on which the pressing pin can ride on the insertion end to the outer shaft, and a stopper groove capable of colliding with the pressing pin is provided on the outer surface. It was formed with an inclined surface having a wall surface that was substantially orthogonal to the insertion direction and opposed to the insertion direction. The pressing pin can be easily climbed from the stopper groove to the guide groove by the inclined surface of the stopper groove. In addition, the inner shaft is prevented from being pulled out in the pull-out direction by the insertion end side wall surface by placing the insertion end side wall surface of the inner shaft against the pressing pin without providing a stepped stopper portion for preventing the inner shaft from coming off. it can.

(Claim 4 )
(j) When the guide groove is provided in the distal direction from the stopper groove of the inner shaft, the height of the opposite side wall surface (slope) is set to the depth of the guide groove while maintaining the height of the base end side wall surface of the stopper groove. Samin) Can be shallow. As a result, the amount of the pressing pin climbing from the stopper groove at the time of extension can be reduced, so that the extension operation can be performed more smoothly. Since the height of the base end side wall surface of the stopper groove is maintained, the retaining durability of the inner shaft can be maintained.

(Claim 5 )
(k) When the pressing pin abuts against the stopper wall of the stopper groove, the pin tip of the pressing pin is configured to be in pressure contact with the inclined surface of the stopper groove without contacting the bottom surface of the stopper groove. In the most contracted state of the inner shaft, the axial play is stopped.

(Claim 6 )
(l) Since the pressing pin engages with the first stopper groove at the contracted position of the outer shaft and the inner shaft, it is possible to prevent the inner shaft from extending unexpectedly.

(Claim 7 )
(m) When the rod-shaped tool is extended, a bending force is likely to be applied in the vicinity of the connecting portion where the outer shaft and the inner shaft overlap. Since the thickened portion having an enlarged diameter is provided at the tip of the outer shaft, the outer shaft and the inner shaft have strength against bending force. In addition, the thick part at the front end side of the inner shaft is a portion that does not overlap the outer shaft in the most contracted state of the rod-shaped tool, and the thick portion can be provided on the outer side. And the part which overlaps the outer side axis | shaft of an inner side axis | shaft can be made thin.

(Claim 8 )
(n) Since the outer shaft and the inner shaft are hollow shafts and the end walls are provided at the end portions on the base end sides, the outer shaft and the inner shaft can be reinforced. Since the inner shaft can be inserted and assembled from the front end side, the end wall can be provided integrally with the shaft, and since it is integrated, the reinforcing effect is high.

(Claim 9 )
(o) In the cleaning tool bar, the above-described (a) to (n) can be realized.

  1 is a perspective view showing the most contracted state of the cleaning tool and its rod-shaped tool, FIG. 2 is a perspective view showing the most stretched state of the cleaning tool and its rod-shaped tool, and FIG. 3 is a cross-sectional view showing the most contracted state of the rod-shaped tool. 4 is an enlarged cross-sectional view showing a portion IV in FIG. 3, FIG. 5 is an enlarged cross-sectional view showing a portion V in FIG. 3, FIG. 6 is a cross-sectional view showing a connecting structure of an outer shaft and an inner shaft, FIG. Is a cross-sectional view showing the VII portion of FIG. 6 on an enlarged scale, FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 6, FIG. 9 is an external view showing the most extended state of the rod-shaped tool, and FIG. FIG. 11 is an enlarged cross-sectional view showing a portion XI of FIG. 10, FIG. 12 is a perspective view showing an intermediate extension state of the cleaning tool and its rod-like tool, and FIG. 13 is a cross-sectional view showing an intermediate extension state of the rod-like tool. 14 is a cross-sectional view taken along line XIV-XIV in FIG. 13, FIG. 15 is a perspective view showing the assembly process of the rod-shaped tool, FIG. 16 is a perspective view showing the XVI portion of FIG. Indicate FIG. 18 is an enlarged perspective view showing the XVIII portion of FIG. 17, FIG. 19 is a perspective view showing the angle adjusting portion, FIG. 20 shows a horizontal angle state of the cleaning tool, (A) is an overall view, B) is a sectional view, FIG. 21 shows an intermediate angle state of the cleaning tool, (A) is an overall view, (B) is a sectional view, FIG. 22 shows a maximum angle state of the cleaning tool, and (A) is an overall view. , (B) is a sectional view, FIG. 23 shows a head joint of a cleaning tool, (A) is an overall view, (B) is an enlarged view, FIG. 24 is a perspective view showing an assembly process of the head joint portion, and FIG. 26 is a cross-sectional view showing the assembly process of the head joint portion, FIG. 26 is a plan view showing the cleaning sheet and the sheet holding protrusion, and FIG. 27 is a cross-sectional view showing the insertion process of the cleaning sheet into the sheet holding protrusion.

  As shown in FIG. 1, the cleaning tool 1 connects the base end portion of the angle adjustment arm 200 to the most distal portion of the rod-like tool 100, and connects the cleaning head 400 to the tip end portion of the angle adjustment arm 200 via the head joint 300. Then, the cleaning sheet 500 is attached to and detached from the mounting plate 401 of the cleaning head 400 for use. Hereinafter, the rod-shaped tool 100, the angle adjustment arm 200, the head joint 300, and the cleaning head 400 will be described.

(Bar-shaped tool 100) (FIGS. 1 to 16)
As shown in FIGS. 1 and 2, the rod-shaped tool 100 has a second shaft (pipe) 20 in the hollow portion of the hollow first shaft (pipe) 10 and a hollow portion in the hollow portion of the second shaft 20 that is hollow. A third shaft (pipe) 30 is connected to a hollow portion of the third shaft 30 by inserting a fourth shaft (solid rod) 40 in this order so as to be extendable and contractable in the axial direction. Thereby, the cleaning head 400 connected to the rod-shaped tool 100 can be positioned and used from the user's hand to the remote. 1 shows the most contracted state, FIG. 2 shows the most extended state, and FIG. 12 shows the intermediate extended state.

  In the rod-like tool 100, the first shaft 10 and the second shaft 20 constitute a pair of the outer shaft and the inner shaft of the present invention that are connected to each other, and the second shaft 20 and the third shaft 30 are connected to each other. The third shaft 30 and the fourth shaft 40 constitute a pair of an outer shaft and an inner shaft, and the third shaft 30 and the fourth shaft 40 constitute an outer shaft and an inner shaft of the present invention that are connected to each other. Hereinafter, a set of the first shaft 10 and the second shaft 20 will be described in detail as a representative of the set of the outer shaft and the inner shaft of the present invention.

  As shown in FIGS. 3 to 8, the rod-shaped tool 100 has a pressing pin 51 fitted in a through hole 11 provided in a proximal end portion on the distal end side into which the second shaft 20 of the first shaft 10 is inserted. The first shaft 10 includes a pressing pin 51 having a convex shape inward from the wall surface of the hollow portion. The elastic member 52 provided on the first shaft 10 extends the pressing pin 51 inwardly from the wall surface of the hollow portion of the first shaft 10 in the outer surface of the second shaft 20, in this embodiment, in the axial direction of the outer surface of the second shaft 20. The guide groove 21 is slidably pressed against the guide groove 21. In addition, the long rib 12 extended in the axial direction of the inner surface of the first shaft 10 and the long groove 22 extended in the axial direction of the outer surface of the second shaft 20 are slidably engaged with each other, and the length The shank rib 12 and the long groove 22 were made to have an acute angle with respect to the pressing direction of the pressing pin 51. In this embodiment, the rib 12 is a triangular rib and the groove 22 is a triangular groove.

  In this embodiment, the cross-sectional shapes of the first shaft 10 and the second shaft 20 are non-circular cross-sections that are substantially similar to each other as shown in FIG. 8, and the mounting plate 401 and the cleaning sheet of the cleaning tool 1 are formed. When 500 is placed on a cleaning surface such as a floor surface, the long axis of the ellipse of the cross section of the first shaft 10 is positioned on the vertical line, and the first shaft 10 becomes a grip that is easy to grip by the user.

  Each of the through hole 11 of the first shaft 10 and the guide groove 21 of the second shaft 20 is provided on the minor axis of the elliptical cross section of the first shaft 10 and the second shaft 20 as shown in FIG. The elastic member 52 that applies a pressing force to the pressing pin 51 is a C-shaped ring spring that is wound around the outer periphery of the first shaft 10. Each of the rib 12 of the first shaft 10 and the groove 22 of the second shaft 20 is provided at two opposite positions on the major axis of the elliptical cross section of the first shaft 10 and the second shaft 20. Accordingly, the first shaft 10 and the second shaft 20 are in the circumferential direction of their cross section, and the pressure pin 51 provided on their short axis and one pressure contact of the guide groove 21, relative to each other on their long axis. The two sets of ribs 12 and grooves 22 provided at the two positions are engaged with each other at all three points of engagement surfaces (or engagement points) as two sliding surfaces (sliding portions) formed by the set of the grooves 22. The reaction force direction exerted on the press contact of the pressing pin 51 by the two sliding surfaces of the rib 12 and the groove 22 and the pressing direction of the pressing pin are configured not to be parallel to each other. The pressing pin 51 pressed by the elastic tension force of the elastic member 52 presses the second shaft 20 against the first shaft 10, and the groove side surface of the groove 22 presses against the rib side surface of the rib 12. Eliminate backlash.

  The rod-shaped tool 100 is in the most contracted state in which the second shaft 20 is inserted into the first shaft 10 (FIGS. 3 to 8), and the outer surface of the second shaft 20 to which the pressing pin 51 is pressed is placed on the outer surface of FIGS. As shown in FIG. 7, a first stopper groove 23 (second stopper groove) that can be engaged with the pressing pin 51 is provided following the guide groove 21. The groove bottom surface 23A of the first stopper groove 23 is deeper than the guide groove 21, and a gentle slope 23B is formed in a portion following the guide groove 21, and the insertion direction of the second shaft 20 is formed in a portion opposite to the slope 23B. A stopper wall 23C that is substantially orthogonal is provided. When the front end of the pressing pin 51 abuts against the stopper wall 23C of the first stopper groove 23 at the most contracted end of the first shaft 10 and the second shaft 20, as shown in FIG. Without contacting the groove bottom surface 23A of the first stopper groove 23, the rear end of the pressing pin 51 is in pressure contact with the inclined surface 23B of the first stopper groove 23, whereby the first shaft 10 and the second shaft 20 It eliminates free movement (backlash) in the axial direction and absorbs dimensional variations of each part.

  As shown in FIG. 11, the rod-shaped tool 100 is placed on the outer surface of the second shaft 20 to which the pressing pin 51 is pressed in the most extended state (FIGS. 9 to 11) in which the second shaft 20 is pulled out from the first shaft 10. A second stopper groove 24 (first stopper groove) following the groove 21 is provided. The groove bottom surface 24A of the second stopper groove 24 is deeper than the guide groove 21, and a gentle slope 24B is formed in a portion following the guide groove 21, and a second shaft 20 is pulled out in a portion opposite to the slope 24B. A stopper wall 24C that is substantially orthogonal is provided. When the rear end of the pressing pin 51 is in contact with the stopper wall 24C of the second stopper groove 24 at the most extended end of the first shaft 10 and the second shaft 20, the tip end of the pressing pin 51 is the second stopper groove. The front end of the pressing pin 51 is in pressure contact with the inclined surface 24B of the second stopper groove 24 without contacting the groove bottom surface 24A of the groove 24, thereby free movement of the first shaft 10 and the second shaft 20 in the axial direction ( It eliminates backlash and absorbs the dimensional variation of each part.

  The rod-shaped tool 100 is in the most contracted state in which the second shaft 20 is inserted into the first shaft 10 (FIGS. 3 to 6), and does not overlap the tip portion of the first shaft 10 and the first shaft 10 (first shaft 10 The thickened portions 13 and 25 having an enlarged diameter and having an enlarged outer periphery are provided at the respective end portions of the tip portion of the second shaft 20 (which does not enter the center). Only the tip portions of the first shaft 10 and the second shaft 20 are thickened and strong, the remaining portions of the shafts 10 and 20 are thinned, and the gap between the first shaft 10 and the second shaft 20 is also reduced in their thickness. Since the minimum required for the slide is used, the radial step between the first shaft 10 and the second shaft 20 is small. The rod-shaped tool 100 can increase the expansion / contraction ratio by increasing the number of expansion / contraction steps of the first shaft 10 to the fourth shaft 40 without increasing the grip of the first shaft 10 gripped by the user.

  As shown in FIG. 5, the rod-like tool 100 is provided with end walls 14 and 26 at the proximal ends of the first shaft 10 and the second shaft 20. The base end portions of the first shaft 10 and the second shaft 20 include only the end walls 14 and 26, so that there is no useless space, and the length of expansion and contraction of the rod-shaped tool 100 can be increased.

  The rod-shaped tool 100 is in an intermediate extension state between the first shaft 10 and the second shaft 20 (FIGS. 12 to 14), and the pressing pin 51 pressed by the tension force of the elastic member 52 passes through the guide groove 21 of the second shaft 20. While pressing, it expands and contracts. At this time, between the first shaft 10 and the second shaft 20, the friction between the pressing pin 51 and the guide groove 21 and the friction between the rib 12 and the groove 22 are set low, and the pressing of the elastic member 52 is set high. Thus, a high-quality slide feeling can be obtained. The first shaft 10 and the second shaft 20 can be used while being stopped at the intermediate extension position.

  As shown in FIGS. 15 and 16, the first shaft 10 and the second shaft 20 are assembled in a state in which the second shaft 20 is incorporated from the opening on the distal end side of the hollow portion of the first shaft 10. This is done by inserting the pressing pin 51 into the through hole 11 and winding the elastic member 52 around the outer periphery of the first shaft 10 and the pressing pin 51.

  The pressing pin 51 is inserted into the through hole 11 of the first shaft 10 and the elastic member 52 is wound around the outer periphery of the first shaft 10 and the pressing pin 51 (the pressing pin 51 is connected to the first shaft 10 from the through hole 11. The second shaft 20 may be incorporated from the opening on the distal end side of the hollow portion of the first shaft 10. In order to improve the incorporation of the second shaft, the end portion on the proximal end side of the second shaft 20 has a through-hole 11 in the first shaft 10 when the second shaft 20 is incorporated into the hollow portion of the first shaft 10. A tapered chamfer 26 </ b> A is provided in which the tip of the pressing pin 51 fitted in is in sliding contact.

  Assembling can be started from any combination of the first shaft 10 and the second shaft 20, the second shaft 20 and the third shaft 30, and the third shaft 30 and the fourth shaft 40.

  In addition, in the rod-shaped tool 100, as mentioned above, the 2nd axis | shaft 20 and the 3rd axis | shaft 30 comprise the group of the outer side axis | shaft of this invention connected with each other. Therefore, as shown in FIGS. 4, 5, and 8, the set of the second shaft 20 and the third shaft 30 is not limited to the pressing pin 51 and the elastic member 52 used for the set of the first shaft 10 and the second shaft 20. With the same pressing pin 61 and elastic member 62, the second shaft 20 has a fitting hole 27 (corresponding to the fitting hole 11 of the first shaft 10) for the pressing pin 61, and a long rib 28 (the length of the first shaft 10). Equivalent to the scale rib 12). The third shaft 30 is a guide groove 31 for the pressing pin 61 (equivalent to the guide groove 21 of the second shaft 20), a long groove 32 (equivalent to the long groove 22 of the second shaft 20), a stopper groove 33, and a groove. Bottom surface 33A, inclined surface 33B, stopper wall 33C (corresponding to first stopper groove 23, groove bottom surface 23A, inclined surface 23B, stopper wall 23C of second shaft 20), stopper groove 34, groove bottom surface 34A, inclined surface 34B, stopper wall 34C ( The second stopper groove 24, the groove bottom surface 24A, the inclined surface 24B, and the stopper wall 24C of the second shaft 20, the thick portion 35 (corresponding to the thick portion 25 of the second shaft 20), and the end wall 36 (second shaft 20). ) And a chamfer 36A (corresponding to the chamfer 26A of the second shaft 20).

  Similarly, the 3rd axis | shaft 30 and the 4th axis | shaft 40 also comprise the group of the outer side axis | shaft and inner side axis | shaft of this invention connected mutually. Therefore, as shown in FIGS. 4, 5, and 8, the set of the third shaft 30 and the fourth shaft 40 is not limited to the pressing pin 51 and the elastic member 52 used for the set of the first shaft 10 and the second shaft 20. With the same pressing pin 71 and elastic member 72, the third shaft 30 has a fitting hole 37 (corresponding to the fitting hole 11 of the first shaft 10) for the pressing pin 71, and a long rib 38 (the length of the first shaft 10). Equivalent to the scale rib 12). The fourth shaft 40 includes a guide groove 41 for the pressing pin 71 (equivalent to the guide groove 21 of the second shaft 20), a long groove 42 (equivalent to the long groove 22 of the second shaft 20), a stopper groove 43, Groove bottom surface 43A, slope 43B, stopper wall 43C (corresponding to the first stopper groove 23, groove bottom surface 23A, slope 23B, stopper wall 23C of the second shaft 20), stopper groove 44 (not shown), groove bottom surface 44A, slope 44B, A stopper wall 44C (equivalent to the second stopper groove 24, groove bottom surface 24A, slope 24B, stopper wall 24C of the second shaft 20) and a chamfer 45 (equivalent to the chamfer 26A of the second shaft 20) are provided.

(Angle adjustment arm 200) (FIGS. 17-22)
The angle adjustment arm 200 can be used by adjusting the mounting angle of the cleaning head 400 connected to the rod-shaped tool 100. As shown in FIGS. 17 to 19, the angle adjusting arm 200 fits a bifurcated mounting portion 201 to a mounting portion 45 provided at the tip of the fourth shaft 40 of the rod-shaped tool 100. The anti-rotation sleeve 202 inserted into the attachment hole on one side of the attachment portion 201 is inserted into the attachment hole 44A of the attachment portion 45 of the fourth shaft 40 from one side, and the engagement flat surface 202A of the anti-rotation sleeve 202 having a two-sided width is inserted. Is engaged with the engagement plane 44B of the mounting hole 44A to prevent rotation. The anti-rotation sleeve 203 inserted into the attachment hole on the other side of the attachment portion 201 is inserted into the attachment hole 44A of the attachment portion 45 of the fourth shaft 40 from the other side, and the engagement plane 203A having a two-sided width of the anti-rotation sleeve 203 is inserted. Is engaged with the engagement plane 44B of the mounting hole 44A to prevent rotation. The angle adjusting arm 200 is attached to the mounting portion 45 of the fourth shaft 40 by inserting the set screw 204 from the hollow portion of the anti-rotation sleeve 202 and screwing the tip screw portion of the set screw 204 to the female screw portion of the anti-rotation sleeve 203. Install so that it can swing.

  When fitting the mounting portion 201 of the angle adjusting arm 200 to the mounting portion 45 of the fourth shaft 40 as described above, the coil spring 205 and the stainless steel ball 206 are inserted into the hole drilled on the central axis of the arm 200. The balls 206 are sequentially loaded, and the balls 206 are pressed against the concave surfaces 207 provided at a plurality of positions in the circumferential direction on the outer peripheral surface of the tip of the mounting portion 45 of the fourth shaft 40. When the angle adjusting arm 200 is swingably attached to the attachment portion 45 of the fourth shaft 40 as described above, the ball 206 is urged by the coil spring 205 and selectively applied to any concave surface 207 of the attachment portion 45. The attachment angle in the swinging direction with respect to the rod-shaped tool 100 (fourth shaft 40) is set to an appropriate angle. 20 is a horizontal angle state in which the arm 200 is kept substantially horizontal with respect to the rod-shaped tool 100, FIG. 21 is an intermediate angle state in which the arm 200 is obliquely crossed with respect to the rod-shaped tool 100, and FIG. On the other hand, the maximum angle state in a folded shape is shown.

(Head joint 300) (FIGS. 23 to 25)
The head joint 300 connects the cleaning head 400 to the tip of the angle adjustment arm 200. The head joint 300 includes a stainless steel plate spring 301. The base end portion of the leaf spring 301 is inserted into a U-shaped cross-section mounting groove 208 provided on the rear surface on the distal end side of the angle adjustment arm 200, and the set screw 302 is inserted into the flaw hole 301 </ b> A of the leaf spring 301. By screwing into the screw hole 209, the base end portion of the leaf spring 301 is fixed to the mounting groove 208 of the arm 200. The front end of the leaf spring 301 is inserted into a mounting slit 402 provided at the rear end of the mounting plate 401 of the cleaning head 400, and the front end of the leaf spring 301 is mounted on the rear end side upper surface of the mounting plate 401. The tip end side mounting hole 301 </ b> B of the leaf spring 301 is engaged with the mounting convex portion 403 by sliding on the front upward slope surface 403 </ b> A at the upper end of the portion 403. Accordingly, the cleaning head 400 can bend flexibly by the head joint 300 and press the entire surface up to the base of the mounting plate 401 against the cleaning surface. Since the cleaning head 400 bends in the vertical direction, the attachment plate 401 can be made to follow the cleaning surface without finely adjusting the crossing angle of the cleaning head 400 with respect to the rod-shaped tool 100.

(Cleaning head 400) (FIGS. 26 and 27)
As shown in FIG. 1, the cleaning head 400 has a wide end 401A on the base end side of the mounting plate 401 and a narrow end 401B on the distal end side. In the present embodiment, the wide end 401A is formed from the narrow end 401B of the rod-like tool 100. It is long in the axial direction. A sheet holding protrusion 404 is provided on the base side of the upper surface of the wide portion 401A.

  The cleaning sheet 500 includes, for example, a base nonwoven fabric 501A and fibers 501B on the surface of the base nonwoven fabric 501A. The cleaning sheet 500 includes line seals 502 on both the left and right sides that overlap two base nonwoven fabrics 501A in a cylindrical shape so as to be attached to the mounting plate 401. A point seal 503 is provided to be hooked on left and right stepped locking portions 401C provided at the boundary between the portion 401A and the narrow width portion 401B. The cleaning sheet 500 includes a locking hole 504 that is locked to the sheet holding protrusion 404 of the mounting plate 401 at the center of the longitudinal end of the base nonwoven fabric 501A.

  The cylindrical base nonwoven fabric 501A of the cleaning sheet 500 is attached to the mounting plate 401 of the cleaning head 400, the point seals 503 on both sides are hooked on the left and right locking portions 401C of the mounting plate 401, and the locking holes 504 are mounted on the mounting plate. The sheet holding projection 404 is used by being locked. At this time, as shown in FIGS. 26 and 27, the sheet holding protrusion 404 of the cleaning head 400 has a vertically long shape in the axial direction of the rod-like tool 100 in a plan view, and a tapered surface 404A is provided on the lower surface of the sheet insertion side. The locking hole 504 of the cleaning sheet 500 is easy to insert and is difficult to come off. The protrusion shaft portion 404B of the sheet holding protrusion 404 passes through the sheet insertion side, and the locking hole 504 of the cleaning sheet 500 is easily inserted. 26 and 27, the longitudinal length of the sheet holding projection 404 is A, the maximum circumferential length of the projection 404 passing through the outer peripheral surface of the projection shaft 404B on the sheet insertion side is L, and the longitudinal direction of the locking hole 504 is obtained. When the length is a and the circumferential length is l, l × γ> L (γ is an elongation correction coefficient of the base nonwoven fabric 501A) so that the locking hole 504 of the cleaning sheet 500 is inserted into the sheet holding protrusion 404. By making a << A, the locking hole 504 of the cleaning sheet 500 is not easily detached from the sheet holding projection 404.

According to the present embodiment, the following operational effects can be obtained.
(a) The inner shaft (for example, the second shaft 20) includes the pressing force of the pressing pin (for example, 51), the groove (for example, 22) and the outer shaft (for example, the first shaft 10) of the inner shaft (for example, the second shaft 20). Of the two ribs (for example, 12) are supported by reaction forces received from two sliding surfaces (the two sliding surfaces are not parallel) that slide, and directions of the reaction forces and pressing forces received from the two sliding surfaces Are not parallel to each other, and the inner shaft is supported at three points in the circumferential direction by the pressing force and two reaction forces, and is urged toward the axial center. Therefore, the inner shaft (for example, the second shaft 20) can be stopped from moving in the radial direction and the circumferential direction within the cross section.

  Since the pressing pin (for example, 51) presses against the peripheral surface of the inner shaft (for example, the second shaft 20), the movement in the axial direction is also moderately regulated by the frictional force. Accordingly, the inner shaft (for example, the second shaft 20) can be connected and held without any play to the outer shaft (for example, the first shaft 10).

  (b) The outer shaft (for example, the first shaft 10) includes a pressing pin (for example, 51) that protrudes inwardly from the wall surface of the hollow portion, and the pressing pin (for example, 51) is moved to the inner shaft (for example, 51) by an elastic member (for example, 52). A rib (for example, 12) that is in pressure contact with the outer surface of the second shaft 20) and extends in the axial direction of the inner surface of the outer shaft (for example, the first shaft 10), and an axial direction of the inner shaft (for example, the second shaft 20). The extended groove (for example, 22) is slidably engaged with each other, and the sliding surface of the rib (for example, 12) and the groove (for example, 22) has an acute angle with respect to the pressure contact direction of the pressing pin (for example, 51). With this configuration, the pressing force applied to the inner shaft (for example, the second shaft 20) by the pressing pin (for example, 51) is the groove (for example, 22) (or the rib (for example, 12) of the inner shaft (for example, the second shaft 20). )) To the rib (for example, 12) (for example, the first shaft 10) ( It can be in pressing the groove (e.g. 22)), as well as detent of the outer shaft (e.g., the first shaft 10) and the inner shaft (e.g., the second axis 20), attempting certain of Gatatome.

  When there are two pairs of ribs (for example, 12) and grooves (for example, 22) separated in the circumferential direction of the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20), the outer shaft (for example, the first shaft) The shaft 10) and the inner shaft (for example, the second shaft 20) are supported at three points separated from each other in the circumferential direction in the cross section, thereby further ensuring the backlash prevention.

  (c) The pressing force applied to the inner shaft (for example, the second shaft 20) by the pressing pin (for example, 51) moves the groove (for example, 22) (or the rib (for example, 12)) of the inner shaft (for example, the second shaft 20) to the outside. It is pressed against a rib (for example, 12) (or a groove (for example, 22)) of a shaft (for example, the first shaft 10), and a groove (for example, 22) of an inner shaft (for example, the second shaft 20) and an outer shaft (for example, a first shaft 10). The ribs (for example, 12) of the single shaft 10) can be engaged with each other without backlash, and the rotation prevention of the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20) can be ensured.

  (d) By providing a rib (for example, 12) and a groove (for example, 22) in the cross section of the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20), the structural strength thereof can be improved. . The pressing pin (for example, 51) and the elastic member (for example, 52) may be integrated.

  (e) The inner shaft (for example, the second shaft 20) includes a second stopper groove (for example, 24) provided on the inner shaft (for example, the second shaft 20) and a pressing pin provided on the outer shaft (for example, the first shaft 10). Since it is prevented from coming off by the abutting (for example, 51), it is not necessary to provide a stepped stopper portion (small diameter portion) on the inner surface of the distal end portion of the outer shaft (for example, the first shaft 10) as in the conventional example. Therefore, the inner shaft (for example, the second shaft 20) can be inserted from the tip of the outer shaft (for example, the first shaft 10).

  At the time of insertion, the pressing pin (for example, 51) is guided by the inclined surface (for example, 24B) of the base end portion of the inner shaft (for example, the second shaft 20) and pushed outward to reach the second stopper groove (for example, 24). When pushed, the pressing pin (for example, 51) returns inward and engages with the second stopper groove (for example, 24). Since the base end side wall surface (for example, the stopper wall 24C) of the second stopper groove (for example, 24) is a surface substantially orthogonal to the axial direction, it abuts the side surface of the pressing pin (for example, 51) and The second shaft 20) can be prevented from coming off in the pull-out direction.

  Further, the wall surface (tip side wall surface) facing the second stopper groove (for example, 24) is an inclined surface (for example, 24B) opened to the outside, so that the inner shaft (for example, the second shaft 20) moves in the pushing direction. Can be done freely.

  (f) Since a small-diameter stopper is not provided at the distal end portion of the outer shaft (for example, the first shaft 10), the inner shaft (for example, the second shaft 20) can be inserted from the distal end side of the outer shaft (for example, the first shaft 10). it can. Further, since the base end of the inner shaft (for example, the second shaft 20) is provided with a slope (for example, 24B) on which the pressing pin (for example, 51) can ride, the pressing pin (for example, 51) is moved to the outer shaft (for example, the first shaft). The assembly is completed simply by inserting the inner shaft (for example, the second shaft 20) in the state set in 10).

  Similarly, when assembling multistage telescopic shafts, the pressing pins (for example, 51) are set on the respective outer shafts (for example, the first shaft 10) (the shafts other than the shaft having the smallest diameter), and then in any order (the minimum diameter shaft). The inner shaft (for example, the second shaft 20) can be inserted.

  Further, since the proximal end portion of the inner shaft (for example, the second shaft 20) is inserted from the distal end portion of the outer shaft (for example, the first shaft 10), the cleaning head is integrally formed with the distal end of the inner shaft (for example, the second shaft 20). Even when 400 or the like is provided, it can be assembled.

  (g) Since it is not necessary to provide a stepped stopper on the inner surface of the outer shaft (for example, the first shaft 10), the diameter of the inner shaft (for example, the second shaft 20) and the outer shaft (for example, the first shaft 10) The difference can be reduced. That is, the difference in diameter is the thickness necessary for the structural strength × 2 + gap. Specifically, the wall thickness of 1.5mm and gap of 0.5mm (diameter difference of 3.5mm) necessary for structural strength is common. If the minimum shaft diameter is set to about 10mm, the second stage shaft diameter is 13.5mm, The third stage shaft diameter is 17mm, the fourth stage shaft diameter is 20.5mm, and the fifth stage shaft diameter is 24mm. Even considering the ease of gripping the outermost shaft (grip), it is sufficiently practical up to about 5 steps. The number of stages can be increased, and the length at the time of reduction can be made compact while maintaining the length at the time of extension.

  Incidentally, in the rod-shaped tool described in Patent Document 1 described above, specifically, the thickness of the shaft necessary for the structural strength is 1.5 mm, and the stepped stopper portion provided on the tip side of the inner surface of the outer shaft. Generally, a step of 1mm and a clearance of 0.5mm (diameter difference of 5.5mm) are common. If the minimum shaft diameter is set to about 10mm from the structural strength, the second-stage shaft diameter is 15.5mm and the third-stage shaft diameter is 21mm. The 4th stage shaft diameter is 26.5 mm, and the 5th stage shaft diameter is 32 mm. Because of the ease of gripping the outermost shaft (grip), the number of practical steps is about three, and a compact multi-stage telescopic rod-like tool cannot be obtained.

  Furthermore, since the base end portion of the inner shaft (for example, the second shaft 20) is not provided with a conventional elastic arm locking projection, the length of the rod-like tool 100 can be eliminated from the total length. Further, since the inner shaft (for example, the second shaft 20) can be inserted from the distal end portion of the outer shaft (for example, the first shaft 10), it is necessary to fit a cap to the base end portion of the outer shaft (for example, the first shaft 10). In addition, the wasteful length due to this can be eliminated from the overall length of the rod-shaped tool 100. As a result, the length of the rod-shaped tool 100 is not wasted, and if the length of the rod-shaped tool 100 at the time of contraction is the same as the conventional length, the length at the time of extension becomes longer by eliminating the above-mentioned waste length.

  (h) The inner shaft (for example, the second shaft 20) has a slope on which the pressing pin (for example, 51) can ride on the insertion end of the outer shaft (for example, the first shaft 10), and the outer surface has a pressing pin (for example, 51). Is provided with a second stopper groove (for example, 24), and the second stopper groove (for example, 24) is inserted into the outer shaft (for example, the first shaft 10) by the insertion end side wall surface (for example, the stopper wall 24C). A wall surface (for example, 24B) that is substantially orthogonal to the direction and opposed thereto is formed by an inclined surface that opens outward. The pressing pin (for example, 51) can easily ride on the guide groove (for example, 21) from the second stopper groove (for example, 24) by the slope of the second stopper groove (for example, 24). Further, the insertion end side wall surface of the inner shaft (for example, the second shaft 20) is used as a pressing pin (for example, 51) without providing a stepped stopper portion for preventing the inner shaft from being removed inside the outer shaft (for example, the first shaft 10). By applying, the inner shaft (for example, the second shaft 20) can be prevented from coming off in the pull-out direction by the insertion end side wall surface.

  (i) When a guide groove (for example, 21) is provided in the distal direction from the second stopper groove (for example, 24) of the inner shaft (for example, the second shaft 20), the base end side of the second stopper groove (for example, 24) While maintaining the height of the wall surface (for example, the stopper wall 24C), the height of the facing side wall surface (slope (for example, 24B)) can be made shallow (by the depth of the guide groove (for example, 21)). As a result, the amount of the pressing pin (for example, 51) riding on the second stopper groove (for example, 24) during extension can be reduced, so that the extension operation can be performed more smoothly. Since the height of the side wall surface of the base end portion of the second stopper groove (for example, 24) is maintained, the retaining durability of the inner shaft (for example, the second shaft 20) can be maintained.

  (j) When the pressing pin (for example, 51) contacts the stopper wall (for example, 23C) of the first stopper groove (for example, 23), the pin tip of the pressing pin (for example, 51) is in the first stopper groove (for example, 23). ) Without contacting the groove bottom surface (for example, 23E) of the first stopper groove (for example, 23) so as to be in pressure contact with the inclined surface (for example, 23B), the outer shaft (for example, the first shaft 10) and the inner shaft In the most contracted state of the second shaft 20 (for example, the second shaft 20), the axial backlash is stopped.

  (k) Since the pressing pin (for example, 51) engages with the first stopper groove 23 at the contracted position of the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20), the inner shaft ( For example, the second shaft 20) can be prevented from extending.

  (l) When the rod-shaped tool 100 is extended, a bending force is likely to be applied in the vicinity of the connecting portion where the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20) overlap. Since the thickened portion (for example, 25) having an enlarged diameter is provided at the tip of the outer shaft (for example, the first shaft 10), the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20) have a bending force. There is strength against. In addition, the thick part (for example, 25) on the distal end side of the inner shaft (for example, the second shaft 20) is a portion that does not overlap the outer shaft (for example, the first shaft 10) in the most contracted state of the rod-shaped tool 100, A thick portion can be provided on the outside. And the part which overlaps with the outer side axis | shaft (for example, 1st axis | shaft 10) of an inner side axis | shaft (for example, 2nd axis | shaft 20) can be made thin.

  (m) Since the outer shaft (for example, the first shaft 10) and the inner shaft (for example, the second shaft 20) are hollow shafts and end walls (for example, 14, 26) are provided at the respective proximal ends, the outer shaft (For example, the first shaft 10) and the inner shaft (for example, the second shaft 20) can be reinforced. Since the inner shaft (for example, the second shaft 20) can be inserted and assembled from the front end side, the end wall (for example, 14, 26) can be provided integrally with the shaft and integrated, so that the reinforcing effect can be obtained. high.

  (n) In the cleaning tool rod 100, the above-described (a) to (m) can be realized.

FIG. 1 is a perspective view showing the most contracted state of the cleaning tool and its rod-shaped tool. FIG. 2 is a perspective view showing the most extended state of the cleaning tool and its rod-shaped tool. FIG. 3 is a cross-sectional view showing the most contracted state of the rod-shaped tool. FIG. 4 is an enlarged sectional view showing a portion IV in FIG. FIG. 5 is an enlarged cross-sectional view of a portion V in FIG. FIG. 6 is a cross-sectional view showing a connecting structure of the outer shaft and the inner shaft. FIG. 7 is an enlarged cross-sectional view showing a portion VII in FIG. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. FIG. 9 is an external view showing the most extended state of the rod-shaped tool. 10 is a cross-sectional view of FIG. FIG. 11 is an enlarged cross-sectional view showing a portion XI in FIG. FIG. 12 is a perspective view showing an intermediate extension state of the cleaning tool and its rod-shaped tool. FIG. 13 is a cross-sectional view showing an intermediate extension state of the rod-shaped tool. 14 is a cross-sectional view taken along line XIV-XIV in FIG. FIG. 15 is a perspective view showing an assembling process of the rod-shaped tool. FIG. 16 is a perspective view showing the XVI portion of FIG. FIG. 17 is a perspective view showing an angle adjusting portion of the cleaning tool. FIG. 18 is an enlarged perspective view showing a portion XVIII in FIG. FIG. 19 is a perspective view showing the angle adjusting unit. FIG. 20 shows a horizontal angle state of the cleaning tool, (A) is an overall view, and (B) is a cross-sectional view. FIG. 21 shows an intermediate angle state of the cleaning tool, (A) is an overall view, and (B) is a sectional view. FIG. 22 shows the maximum angle state of the cleaning tool, (A) is an overall view, and (B) is a sectional view. FIG. 23 shows the head joint of the cleaning tool, where (A) is an overall view and (B) is an enlarged view. FIG. 24 is a perspective view showing an assembling process of the head joint portion. FIG. 25 is a cross-sectional view showing the assembly process of the head joint portion. FIG. 26 is a plan view showing the cleaning sheet and the sheet holding protrusion. FIG. 27 is a cross-sectional view showing a process of inserting the cleaning sheet into the sheet holding protrusion.

Explanation of symbols

1 Cleaning tool 10 1st axis (outside axis)
11 Through hole 12 Rib 13 Thin portion 14 End wall 20 Second axis (inner axis)
21 guide groove 22 groove 23 first stopper groove 23A groove bottom surface 23B slope 23C stopper wall 24 second stopper groove 24A groove bottom surface 24B slope 24C stopper wall 25 thick wall portion 26 end wall 26A chamfer 51 pressing pin 52 elastic member

Claims (9)

A rod-shaped tool for a cleaning tool in which an inner shaft is inserted into a hollow portion of an outer shaft and is connected to be extendable in the axial direction,
The outer shaft is provided with a pressing pin convex inward from the hollow wall surface, and the pressing pin is pressed against the outer surface of the inner shaft by an elastic member,
A rib extending in the axial direction of the inner surface of the outer shaft and a groove extending in the axial direction of the inner shaft are slidably engaged with each other;
The direction of the reaction force exerted by the two sliding portions of the rib and the groove on the pressure contact of the pressure pin and the pressure contact direction of the pressure pin are not parallel to each other in the cross section of the outer shaft and the inner shaft. configured to,
The rib is a triangular rib, and the groove is a triangular groove;
A cleaning tool rod- like tool in which the inner shaft is supported at three points in the circumferential direction by the pressing force of the pressing pin and the two reaction forces received from the two sliding portions of the rib and the groove . The rod-shaped tool for a cleaning tool according to claim 1, wherein the rib extending in the axial direction of the inner surface of the outer shaft and the groove extending in the axial direction of the inner shaft are a long rib and a long groove. The inner shaft has a slope on which the pressing pin can ride on the insertion end to the outer shaft, and a stopper groove on the outer surface where the pressing pin can collide, and the stopper groove has an insertion end side wall surface on the outer shaft in the insertion direction. The bar-shaped tool for a cleaning tool according to claim 1 or 2, wherein a wall surface that is substantially orthogonal to the wall surface and is opposed to the inclined surface is open to the outside. The rod-shaped tool for cleaning tools according to any one of claims 1 to 3, wherein a guide groove on which the pressing pin slides is provided on an outer surface of the inner shaft. A stopper groove is provided on the outer surface of the inner shaft so that the pressing pin can collide with the stopper groove.
The rod-shaped tool for a cleaning tool according to any one of claims 1 to 4, wherein when the pressing pin abuts the stopper groove, the tip of the pressing pin is configured to come into pressure contact with the inclined surface of the stopper groove. Providing first and second stopper grooves on the outer surface of the inner shaft;
A first stopper groove capable of abutting the pressing pin is provided on the outer end side of the inner shaft on the tip side from the second stopper groove.
The cleaning tool bar according to any one of claims 1 to 5, wherein the second stopper groove is formed by a slope whose front end side wall surface is substantially orthogonal to the insertion direction and whose wall surface facing the second stopper groove is opened outward. . The rod-shaped tool for a cleaning tool according to any one of claims 1 to 6, wherein a thick-walled portion having an enlarged diameter is provided at a tip portion of the outer shaft. The said outer side axis | shaft and inner side axis | shaft are hollow shafts, The rod-shaped tool for cleaning tools of any one of Claims 1-7 which provided the end wall in the edge part of each base end side. The cleaning tool using the stick-shaped tool for cleaning tools of any one of Claims 1-8.

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