JP3191766U - Stretch structure of the handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stretchable structure of a handle having a simple structure while being able to maintain a strong and reliable fixed state even when a tensile force acts as well as a compressive force. A handle (2) having a tubular body (11) and a rod-shaped body (12) that is stretchably inserted into one end of the tubular body (11), and a fixing means (21) for fixing the rod-shaped body (12) at a predetermined position of the tubular body (11). It has. The fixing means 21 includes a screw rod 22 provided at one end of a rod-shaped body 12 inserted into the tubular body 11, and a tubular body 23 inserted into the tubular body 11 and expandable / contractible in the radial direction. In order to press and fix the inner peripheral surface of the tubular body 11 by the outer peripheral surface of the tubular body 23, a convex portion screwed to the screw rod 22 is spirally formed on the inner peripheral surface of the tubular body 23. The tubular body 23 is configured to receive a pressing force from the screw rod 22 in the out-of-diameter direction by screwing the convex portion into the screw rod 22. [Selection diagram] Fig. 3

Description

  The present invention relates to a handle expansion / contraction structure applied to a handle such as a cleaning tool having an extension / contraction function so that it can be used for cleaning of automobiles, for example.

  Conventionally, for example, a handle described in Japanese Utility Model Publication No. 7-10521 is known as a handle having this type of stretchable structure. That is, the handle described in the above publication includes an outer pipe, an inner pipe inserted into and removed from the outer pipe, a cylindrical male ring fixed to the end of the outer pipe with a screw, and slidable on the inner pipe. It consists of a female ring that fits outside, and a tapered surface is formed on the outer periphery of the end of the male ring. Further, the inner pipe through-hole of the female ring is composed of a tapered portion that engages with the tapered surface of the male ring from one end to substantially the center, and a sliding portion that the inner pipe slides from the center to the other end. The tapered portion is eccentric with respect to the moving portion.

  And when fixing both pipes in a predetermined position, a female ring is moved to the male ring side, and the taper part of a female ring is made to press the taper surface of a male ring.

Japanese Utility Model Publication No. 7-10521

  However, in the above-described conventional handle expansion / contraction structure, the inner pipe can be fixed by a female ring against an axial compressive force, but the male ring has a tapered portion of the female ring through-hole for a tensile force. Since the inner pipe cannot be fixed because it cannot be pressed against the taper surface, such a stretchable structure has a serious problem that it is limited to applications where no tensile force is applied during use.

  In addition, the above-described conventional apparatus has a drawback that the overall configuration is complicated, such as a large number of parts.

  Therefore, the present invention has been made in view of such a point, and the object of the present invention is to maintain a strong and reliable fixed state even when a tensile force acts as well as a compressive force. Another object is to provide a stretchable structure with a simple structure.

  The handle stretchable structure according to claim 1 has a handle having a tubular body and a rod-like body that is inserted into one end of the tubular body so as to be stretchable, and for fixing the rod-like body at a predetermined position of the tubular body. The fixing means includes a screw rod provided at one end of the rod-like body inserted into the tubular body, and a cylinder which is inserted into one end of the tubular body and is expandable and contractable in the radial direction. And a convex portion screwed into the screw rod is spiraled on the inner peripheral surface of the tubular body so as to press and fix the inner peripheral surface of the tubular body by the outer peripheral surface of the cylindrical body. And the cylindrical body is configured to receive a pressing force radially outward from the screw rod when the convex portion is screwed into the screw rod.

  In the stretchable structure of the handle according to claim 1, the handle is first suitably stretched and adjusted to a predetermined length, and then, for example, when the tubular body is rotated with respect to the rod-like body, the handle is inserted into the tubular body. The projecting portion of the cylindrical body is screwed into the screw rod, and the cylindrical body receives a pressing force in the radially outward direction from the screw rod. Thereby, since the outer peripheral surface of the cylindrical body is firmly pressed against the inner peripheral surface of the tubular body, the rod-shaped body is fixed at a predetermined position of the tubular body. On the other hand, when releasing this fixed state, for example, when the tubular body is rotated in the opposite direction with respect to the rod-shaped body, the convex portion of the cylindrical body is screwed off from the threaded portion of the screw rod, and the cylinder by the screw rod is removed. Since the pressing force to the body is removed, the handle can be expanded and contracted again.

  In this way, the fixing state of the tubular body and the rod-shaped body by the fixing means including the screw rod and the cylindrical body is due to the pressure contact action between the outer peripheral surface of the cylindrical body and the inner peripheral surface of the tubular body. The fixed state can be reliably and firmly maintained against the tensile force as well as the axial compressive force. Therefore, the application is not unduly restricted and can be widely applied to patterns of various articles.

  Moreover, since both of these can be fixed by an extremely simple operation of rotating between the tubular body and the rod-shaped body, it can greatly contribute to the convenience of a series of operations without placing a burden on the user. become.

  The handle stretchable structure according to claim 2 is the handle stretchable structure according to claim 1, wherein the screw rod has a tip portion having a screw portion into which a convex portion of the cylindrical body is screwed, and An intermediate portion having a pressing portion having a diameter larger than the outer diameter of the screw portion and a base end portion having a connecting portion to be inserted into the rod-like body so as to press the cylindrical body in the radially outward direction. It is characterized by that.

  In the handle stretchable structure according to claim 2, for example, when the tubular body is rotated with respect to the rod-shaped body, the spiral convex portion is screwed into the screw rod, and the cylindrical body is reduced in diameter by the pressing portion of the screw rod. Pressed outward. Thereby, since the outer peripheral surface of a cylindrical body and the inner peripheral surface of a tubular body are press-contacted firmly, a rod-shaped body is reliably fixed to the predetermined position of a tubular body.

  The handle stretchable structure according to claim 3 is characterized in that, in the handle stretchable structure according to claim 1 or 2, a notch is formed in the cylindrical body in the axial direction.

  In the handle stretchable structure according to claim 3, when the convex part of the cylindrical body is screwed into the screw part of the screw rod, the outer peripheral surface of the cylindrical body and the inner peripheral surface of the tubular body are strong. The rod-shaped body is fixed to a predetermined position of the tubular body. In this case, since the cut is formed in the cylindrical body in the axial direction, the pressing force from the cylindrical body is appropriately applied to the tubular body, and the cylindrical body and the rod-shaped body are excellent. It becomes possible to maintain a fixed state.

  The stretchable structure of the handle according to claim 4 is the stretchable structure of the handle according to any one of claims 1 to 3, wherein the stretchable structure of the handle is pressed against the inner peripheral surface of the tubular body. A plurality of uneven portions are formed in the axial direction.

  In the handle stretchable structure according to the fourth aspect, the rod-like body and the tubular body are fixed in a state where the inner peripheral surface of the tubular body and the concavo-convex portion of the tubular body are in pressure contact with each other. Since a good pressure contact state is reliably maintained by the uneven portion, it is possible to avoid the inconvenience that the tubular body and the rod-shaped body rotate easily and the fixed state of both is released.

  According to the present invention, since the outer peripheral surface of the tubular body and the inner peripheral surface of the tubular body are pressed and fixed by the fixing means, both of them are fixed to the tensile force as well as the compressive force in the axial direction. However, it is possible to maintain a reliable and strong fixed state.

It is a perspective view of the cleaning tool which shows one Embodiment of the expansion-contraction structure of the pattern which concerns on this invention. It is a cross-sectional view which shows the state which a tubular body and a rod-shaped body can expand-contract. It is a cross-sectional view which shows the state with which the tubular body and the rod-shaped body were fixed. It is a front view which shows a cylindrical body. It is a bottom view which shows a cylindrical body. It is a longitudinal cross-sectional view which shows the state which can expand and contract a tubular body and a rod-shaped body. It is a longitudinal cross-sectional view which shows the state with which the tubular body and the rod-shaped body were fixed.

  Hereinafter, an embodiment of a handle telescopic structure according to the present invention, that is, a cleaning tool for an automobile or the like to which this structure is applied will be described with reference to the drawings. As shown in FIG. 1, the cleaning tool A is attached to a cleaning head 1 having a cleaning function, a stretchable handle 2 having one end attached to a substantially central portion of the upper surface of the cleaning head 1, and the other end of the handle 2. The scraper 3 is used to remove, for example, snow accumulated on the vehicle body.

  The cleaning head 1 includes a wide head body 4 made of synthetic resin such as ABS resin, a blade 5 made of synthetic rubber, and a brush 6 made of synthetic resin such as polypropylene. The tip of the blade 5 provided in the width direction at one end of the head body 4 is configured such that the thickness gradually decreases toward the tip. The brush 6 provided at the other end of the head body 4 is so-called cracked, and the tip portion is divided into a plurality of pieces. If comprised in this way, not only the improvement of detergent inclusion and reduction of water splashing can be achieved, but also inconveniences such as scratches on the object to be cleaned such as the vehicle body can be appropriately avoided.

  The handle 2 includes a cylindrical tubular body 11 and a cylindrical rod-like body 12 having one end portion inserted into one end portion of the tubular body 11 so as to be extendable and retractable. The body 12 is composed of a metal pipe such as aluminum. In consideration of the overall weight, balance, etc., the rod-like body 12 is preferably formed in a hollow shape as in the present embodiment, but of course it can also be constituted in a solid shape, and the tubular body 11 or the rod-like shape. The specific material of the body 12 is not questioned. The other end of the rod-like body 12 is fitted into a connecting tube 13 projecting substantially at the center of the upper surface of the head body 4 and fixed by a screw body 14. Reinforcing ribs 15 having a substantially frontal triangular shape are provided on the left and right sides of the connecting cylinder 13. A cylindrical cap 16 made of synthetic resin or the like is fitted on one end of the tubular body 11. A cylindrical stopper 17 made of synthetic resin or the like is inserted into the other end of the tubular body 11 as shown in FIGS. As shown in FIG. 1, a cylindrical cover body 18 made of a soft foaming resin is externally fitted to an intermediate portion of the tubular body 11, and a cover body 19 having the same configuration as this is attached to the tubular body 11. It is externally fitted to the end.

  Fixing means 21 is provided at one end of each of the tubular body 11 and the rod-shaped body 12 as shown in FIGS. The fixing means 21 includes a rod-shaped screw rod 22 attached to one end portion of the rod-shaped body 12 and a substantially cylindrical tubular body 23 inserted into one end portion of the tubular body 11. The screw rod 22 and the cylindrical body 23 are made of a synthetic resin such as polypropylene, for example. The screw rod 22 has a distal end portion in which a screw portion 24 is formed on the outer peripheral surface, an intermediate portion in which a pressing portion 25 is formed, and a proximal end in which a connecting portion 26 to be inserted into one end portion of the rod-like body 12 is formed. And is formed in a hollow shape. The outer diameter of the pressing portion 25 is configured to be larger than that of the screw portion 24.

  As shown in FIGS. 4 and 5, the cylindrical body 23 has a cut 27 formed in the axial direction, and is configured to be expandable and contractable in the radial direction. On the inner peripheral surface of the cylindrical body 23, a convex portion 28 that is screwed into the screw portion 24 of the screw rod 22 is formed in a spiral shape. The cylindrical body 23 is inserted into the tubular body 11 in a reduced diameter state, and the outer peripheral surface of the cylindrical body 23 is pressed against the inner peripheral surface of the tubular body 11 by the biasing force. Since the tubular body 23 and the tubular body 11 are temporarily fixed by such an urging force, the tubular body 11 and the rod-shaped body 12 do not have any trouble in mutual expansion and contraction, and the tubular shape. The projecting portion 28 of the cylindrical body 23 is screwed into and removed from the screw portion 24 of the screw rod 22 by rotating the tubular body 11 and the rod-shaped body 12 without rotating the body 23 around the rod-shaped body 12. Can do. On the outer peripheral surface of the cylindrical body 23, a plurality of uneven portions 29 are formed in the axial direction over the entire periphery. As shown in FIGS. 2 and 3, a flange portion 30 for preventing the tubular body 23 from being detached is formed at the tip of the screw rod 22.

  As shown in FIG. 1, the scraper 3 has a substantially cylindrical attachment portion 31 into which the other end portion of the tubular body 11 is inserted at one end portion, and a scraper body 32 provided in the width direction at the other end portion of the attachment portion 31. And. The scraper main body 32 is formed in a substantially cross-sectional shape of a cross section, and each tip portion thereof is configured to be sharp. A plurality of concave grooves 33 are provided at one end of the scraper body 32 with a predetermined interval in the width direction.

  The cleaning tool according to the present embodiment has the above-described configuration. For example, when cleaning a car body or a window of an automobile or removing snow accumulated on the car body, the cleaning tool is used as follows. . First, the handle 2 is adjusted to a predetermined length while taking into account the size of the automobile to be cleaned and the physique of the user. That is, the length of the handle 2 is adjusted while gripping the tubular body 11 and the rod-shaped body 12. For example, the handle 2 can be expanded and contracted by rotating the tubular body 11 in one direction with respect to the rod-shaped body 12. Make sure. In this case, as shown in FIG. 2, the cylindrical body 23 is arranged on the tip end side of the screw rod 22, and the urging force from the cylindrical body 23 is applied to the inner peripheral surface of the tubular body 11 as shown in FIG. It works, but its size is not so big. Accordingly, the cylindrical body 23 can be slid in the axial direction along the inner peripheral surface of the tubular body 11 and the handle 2 can be smoothly expanded and contracted. When the convex portion 28 of the cylindrical body 23 is screwed into and removed from the screw portion 24, the cylindrical body 23 slides in the circumferential direction with respect to the tubular body 11, and the cylindrical body 23 and the screw rod 22 are provided. There is no such thing as turning around.

  After adjusting the length of the handle 2 as described above, for example, when the tubular body 11 is rotated in the opposite direction with respect to the rod-shaped body 12, the convex portion 28 of the tubular body 23 is shown in FIGS. Is screwed into the screw portion 24 of the screw rod 22, and the cylindrical body 23 moves to the pressing portion 25 side of the screw rod 22. As a result, an outward pressing force acts on the cylindrical body 23 via the pressing portion 25, so that the outer peripheral surface of the cylindrical body 23 is firmly pressed against the inner peripheral surface of the tubular body 11. That is, the rod-like body 12 is securely fixed at a predetermined position of the tubular body 11 by the fixing means 21. In this case, since the concavo-convex portion 29 is formed on the outer peripheral surface of the tubular body 23 that is press-contacted to the inner peripheral surface of the tubular body 11, it is possible to maintain a good press-contact state. Therefore, it is also possible to appropriately avoid that the tubular body 11 and the rod-shaped body 12 are easily rotated and the fixed state of both is released. In this state, the body of the automobile is cleaned using the cleaning tool A.

  Moreover, when releasing the fixing state of the tubular body 11 and the rod-shaped body 12 again, for example, the tubular body 11 is rotated with respect to the rod-shaped body 12 in the opposite direction. Thereby, as shown in FIGS. 2 and 6, the convex portion 28 of the cylindrical body 23 is unscrewed from the screw portion 24 of the screw rod 22, and the pressing force to the cylindrical body 23 by the pressing portion 25 of the screw rod 22 is reduced. In order to be removed, the cylindrical body 23 is brought into pressure contact with the inner peripheral surface of the tubular body 11 only by the urging force, and the handle 2 can be expanded and contracted again.

  In this way, the fixing state of the tubular body 11 and the rod-like body 12 by the fixing means 21 is due to the pressure contact action between the outer peripheral surface of the cylindrical body 23 and the inner peripheral surface of the tubular body 11, so that the axial compression is performed. A reliable and strong fixed state can be maintained not only against force but also against tensile force. Therefore, the application is not unduly restricted, and it can be widely applied to the handles 2 of various articles other than the cleaning tool A.

  Moreover, since both of these can be fixed by an extremely simple operation of rotating between the tubular body 11 and the rod-shaped body 12, there is no burden on the user. It can greatly contribute to the stool.

  Moreover, since the cleaning tool A according to the present embodiment has a very simple configuration, it has a practical advantage that its manufacture can be easily and inexpensively.

  In addition, in the said embodiment, although the case where the expansion-contraction structure of the pattern which concerns on this invention was applied to the cleaning tools A, such as a motor vehicle, the range which can apply this invention is not limited to this at all. It can be widely applied to patterns of articles that require other stretch functions.

  The screw rod 22 in the above embodiment is configured to include a distal end portion having the screw portion 24, an intermediate portion having the pressing portion 25, and a proximal end portion having the connecting portion 26. The specific configuration is not limited to this.

  Moreover, in the said embodiment, although the notch 27 was formed in the cylindrical body 23 in the axial direction, when the cylindrical body 23 is comprised, for example with the rubber | gum etc. which can be expanded / contracted to radial direction, the cylindrical body 23 is not necessarily required. It is not necessary to form the notch 27 in.

  The concavo-convex portion 29 of the cylindrical body 23 in the above embodiment may be provided if necessary, and can be omitted.

  In addition, the specific configuration such as the shape of the handle 2 can be arbitrarily changed within the range intended by the present invention.

2 Handle 11 Tubular body 12 Bar-shaped body 21 Fixing means 22 Screw rod 23 Tubular body 24 Screw part 25 Pressing part 26 Connecting part 27 Notch 28 Convex part 29 Uneven part

Claims (4)

A handle having a tubular body and a rod-like body which is inserted into one end of the tubular body so as to be stretchable and a fixing means for fixing the rod-like body to a predetermined position of the tubular body,
The fixing means includes a screw rod provided at one end of the rod-like body inserted into the tubular body, and a tubular body that is inserted into one end of the tubular body and is expandable / contractable in the radial direction,
In order to press and fix the inner peripheral surface of the tubular body by the outer peripheral surface of the cylindrical body, a convex portion that is screwed into the screw rod is formed in a spiral shape on the inner peripheral surface of the cylindrical body. An extension structure for a handle, wherein the cylindrical body is configured to receive a pressing force radially outward from the screw rod by screwing the convex portion into the screw rod.   The screw rod includes a tip portion having a screw portion to which a convex portion of the cylindrical body is screwed, and a pressing portion having a diameter larger than an outer diameter of the screw portion so as to press the cylindrical body in a radially outward direction. The stretchable structure of the handle according to claim 1, further comprising: an intermediate portion having a base portion; and a base end portion having a connecting portion inserted into the rod-shaped body.   The stretchable structure of the handle according to claim 1 or 2, wherein a cut is formed in the cylindrical body in the axial direction.   The elastic structure of the handle according to any one of claims 1 to 3, wherein a plurality of concave and convex portions are formed in an axial direction on an outer peripheral surface of the tubular body pressed against an inner peripheral surface of the tubular body.

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