JP6606417B2 - Stretch telescopic rod length adjustment mechanism - Google Patents

Description

  The present invention relates to a length adjusting mechanism for a stretchable telescopic rod, and more specifically, a protrusion that is fixed after adjusting the overall length to a desired length by moving an inner pole inserted into a hollow outer pole. The present invention relates to a mechanism for adjusting the length of a stretchable telescopic rod.

  A stretchable telescopic rod is known that is arranged and fixed with an urging force between opposing wall surfaces. Such a stretchable telescopic rod is attached to an appropriate place with an urging force after adjusting the pipe to a desired length, and it is not necessary to use a nail or a screw on the wall. The thing of the shape is put to practical use. As such a stretchable elastic rod, for example, there is an elastic elastic rod shown in Patent Document 1.

  The elastic telescopic rod shown in Patent Document 1 is generally provided with the following length adjusting mechanism. That is, this elastic telescopic rod has an outer cylinder and an inner cylinder, and a central column is provided at one end of the inner cylinder so as to be movable in the major axis direction. A body is formed, and a spring member is mounted between the housing and the end of the inner cylinder. Further, a main body is provided on the side opposite to the side where the spring member of the central pillar is mounted, and the fixed holding body and the floating holding body are screwed to the main body. And each outer peripheral surface of a fixed clamping body and a floating clamping body is made into the inclined surface cut | disconnected inward toward the side which each end surface opposes. The loose holding body is disposed so as to be capable of reciprocating in the major axis direction in the outer cylinder as the inner cylinder rotates. Then, the fixed pressing body and the floating holding body are arranged so that a divided pressing body obtained by dividing the cylinder whose inner surface is an inclined surface corresponding to the inclined surface of the fixed holding body and the floating holding body into three parts is screwed. ing.

  In such a structure, when the inner cylinder is rotated, the floating holding body reciprocates along the main body according to the rotation direction. When the distance between the fixed clamping body and the floating clamping body is increased, the side surface of the divided pressing body becomes narrower than the inner diameter of the outer cylinder, so that the outer cylinder and the inner cylinder are in a free state, and the length can be adjusted. On the other hand, when the distance between the fixed sandwiching body and the floating sandwiching body is shortened, the side surface of the divided pressing body is biased in the direction of pressing the inner wall surface of the outer cylinder, so that the outer cylinder and the inner cylinder are fixed.

Japanese Patent No. 3631421

  The length adjustment mechanism in the elastic telescopic rod of Patent Document 1 described above is composed of a central column, a spring member, a main body, a fixed clamping body, a floating clamping body, and three divided pressing bodies, and has a complicated structure and a large number of parts. There is a problem that there are many. Moreover, since the divided pressing body is divided into three parts, it becomes disjointed and assembly is troublesome.

  Accordingly, the present invention has been made in view of such problems, and an object thereof is to provide a length adjusting mechanism for a stretchable telescopic rod having a simple structure and a small number of parts.

  Another object of the present invention is to provide a length adjusting mechanism for a stretchable telescopic rod that is easy to assemble.

In order to solve the above problems, the present invention according to claim 1 is configured such that an inner pole inserted into a hollow outer pole is formed to be extendable by moving in and out of the outer pole, and the total length is set to a desired length. In a length adjusting mechanism of a stretchable telescopic rod that is fixed by rotating the outer pole and the inner pole relative to each other after being adjusted to a length, a spring member disposed at one end of the inner pole And a main body provided with a thread groove on the surface, and a substantially cylindrical fastening member provided with a screw portion screwed into the screw groove provided on the main body, The main body has a substantially truncated cone shape whose diameter gradually decreases toward the distal end side, and a top stopper is provided with a stopper for preventing the stopper member from moving. The inside surface is the outside of the main body The side surface is provided with a slit vertically cut to enable the attachment to the main body by elastic deformation of the fastening member, and the outer pole and the inner pole are relatively opposed to each other. A position where the outer peripheral surface of the fixing member is slightly formed between the inner surface of the outer pole and the outer pole and the inner pole so that the outer pole and the inner pole can be expanded and contracted. is formed an outer peripheral surface said fastening member is the upper body between a position for fixing the said inner pole and the outer pole in close contact with the inner surface of the outer pole member for reciprocal movement, the fastening The side wall of the member is set so that the thickness gradually increases from the base end side to the tip end side of the main body, and the tip end portion of the stopper stopper substantially follows the inner shape of the tip end side of the fastening member. With frustoconical shape The slits formed in the side wall include one slit that is completely cut out from the distal end to the proximal end and one or more slits that are longitudinally cut away from the distal end side while leaving the proximal end side. It is characterized by comprising a concave slit .

In order to solve the above-mentioned problem, the present invention described in claim 2 is characterized in that, in the length adjusting mechanism of the stretchable telescopic rod according to claim 1 , the fastening member has an uneven surface. Features.

  According to the length adjusting mechanism of the stretchable telescopic rod according to the present invention, the expansion and the fixation of the outer pole and the inner pole can be realized only by the main body and the fastening member, so the number of parts is small and the structure is simple. There is an effect that it is possible to provide a length adjusting mechanism of a stretchable elastic rod.

  Moreover, according to the length adjusting mechanism of the stretchable telescopic rod according to the present invention, there is an effect that the fastening member can be assembled very easily and quickly without being separated.

(A) is a top view which shows the state which extended the protrusion expansion-contraction rod provided with the length adjustment mechanism of the tension expansion-contraction rod which concerns on this invention, (b) is a front view which shows the contracted state. It is a front view which shows the structure of the length adjustment mechanism of the stretchable elastic rod which concerns on this invention. (A) is a top view of a fastening member, (b) is a bottom view of the fastening member, and (c) is a side view of the fastening member. It is explanatory drawing which shows the state with a clearance gap between a main body and a fastening member. It is explanatory drawing which shows the state which the main body and the fastening member closely_contact | adhered.

  Hereinafter, the length adjusting mechanism of the stretchable telescopic rod according to the present invention will be described in detail based on a preferred embodiment. FIG. 1 is a front view showing the entirety of a projecting telescopic rod provided with a length adjusting mechanism for a stretchable telescopic rod according to the present invention, and FIG. 2 is a front view showing a configuration of the length adjusting mechanism for the stretchable telescopic rod according to the present invention. FIG.

[Configuration of Stretch Stretching Rod 1]
The illustrated stretchable rod 1 includes an inner pole 11 and an outer pole 12 formed of a cylindrical pipe material. The outer diameter of the inner pole 11 is slightly smaller than the inner diameter of the outer pole 12. It is formed in a size that can be accommodated in the outer pole 12. Further, the inner pole 11 and the outer pole 12 are made of metal, for example, aluminum pipe material. The material is not limited to metal, and can be made of an appropriate material such as a synthetic resin or a composite material of a metal and a synthetic resin. Stopper members 13 and 13 are attached to the open ends of the inner pole 11 and the outer pole 12. The stopper members 13, 13 are formed of a synthetic rubber having a high friction coefficient so that the stopper members 13, 13 can be firmly in close contact with each other without easily falling off from the wall surface to which the stretchable telescopic rod 1 is to be attached. Further, a guide member 15 made of synthetic resin for guiding the entry / retreat of the inner pole 11 is attached to the end of the outer pole 12 on the side where the inner pole 11 enters / retreats. The length adjusting mechanism 1 is provided at one end of the inner pole 11.

[Configuration of Length Adjustment Mechanism 1]
The length adjusting mechanism 1 is elastically supported by a spring member 40 disposed at one end of the inner pole 11, and has a main body 20 having a screw groove 21 on the surface and a main body 20 inside. A substantially cylindrical fastening member 30 provided with a screw portion 31 that is screwed into the provided screw groove 21 is provided.

  As shown in FIG. 2, the spring member 40 is disposed at one end of the inner pole 11. The spring member 40 is disposed at one end of the inner pole 11 as follows. That is, a ring-shaped base end member 43 is fixed to an end portion on one side of the inner pole 11 by a pin 45 penetrating the inner pole 11 in the diameter direction, and the base end member 43 is fixed to one side of the spring member 40. The end of is supported. A support member 41 having a cylindrical portion is arranged in a state where a part thereof is inserted into a ring-shaped hole provided in the base end member 43, and an outer side of the inner pole 11 is disposed on the distal end side of the support member 41. A flange 41b having a diameter substantially the same as the diameter is formed, and the spring member 40 is disposed so as to be interposed between the proximal end member 43 and the flange 41b of the support member 41. The main body 20 is elastically supported by the spring member 40.

  The support member 41 is provided with substantially U-shaped cutouts 41a and 41a on opposite side surfaces, and the spring member 40 is provided with the stopper member 13 when the stretchable telescopic rod 1 is attached between walls or the like. , 13 acts to be firmly fixed so as not to fall easily. Further, the substantially U-shaped notches 41a and 41 provided on the side surface of the support member 41 avoid the pin 45 penetrating the inner pole 11 when the support member 41 is pressed and the spring 40 is contracted. It is provided so that the compression operation is not hindered.

  The main body 20 has a substantially truncated cone shape whose diameter gradually decreases toward the distal end side, that is, the upper side in FIG. 2, and a fastening member 30 attached to the main body 20 is directed upward at the top. Further, a stopper 23 for preventing the movement is provided. A thread groove 21 is provided on the surface of the main body 20. The inclination of the main body 20 is about 5 to 15 °.

  The fastening member 30 is an inclined surface that is inclined so as to be aligned with the outer surface of the main body 20 having an inner surface formed in a substantially cylindrical shape, and is formed so that the diameter gradually decreases upward in FIG. Has been. On the inner side surface of the fastening member 30, a screw portion 31 that is screwed into the screw groove 21 provided in the main body 20 is provided. On the other hand, the side surface of the fastening member 30 is provided with a slit 33 vertically cut in the longitudinal direction so that the fastening member 30 can be attached to the main body 20 by elastic deformation. Further, concave slits 35, 35 are provided on the side surface of the fastening member 30 at two locations with a predetermined interval. In this embodiment, the concave slits 35 are formed at two places, but may be provided at one place, or may be provided at two or more places. Unevenness is formed on the surface of the fastening member 30. The irregularities are provided at regular intervals in the longitudinal direction of the side surface. The fastening member 30 is made of a flexible synthetic resin material.

[Operation of length adjusting mechanism 1]
Next, the operation of the length adjusting mechanism 1 formed as described above will be described. With the fastening member 30 mounted on the main body 20 and the thread groove 21 of the main body 20 and the threaded portion 31 of the fastening member 30 being screwed together, as shown in FIG. In this case, the fastening member 30 is arranged in advance at a position where the fastening member 30 can be smoothly inserted into the outer pole 12, that is, a position close to the distal end side of the main body 20. Then, the end of the inner pole 11 opposite to the side on which the length adjusting mechanism 1 is provided is inserted from the side opposite to the side on which the guide member 15 is provided, and the end on the opposite side of the inner pole 11 is inserted. The outer pole 12 is projected from the end on the side where the guide member 15 is provided. And after adjusting the insertion length of the inner side pole 11 suitably and setting the whole to the desired length, the inner side pole 11 and the outer side pole 12 are rotated relatively.

  When rotating, the gap between the side surface of the fixing member 30 and the inner surface of the outer pole 12 is very small. Therefore, when the inner pole 11 and the outer pole 12 are rotated slightly, the side surface of the fixing member 30 is turned. Is easily in contact with the inner surface of the outer pole 12. When the rotation operation is performed in this state, the fastening member 30 comes into contact with the inner surface of the outer pole 12 and starts rotating together with the outer pole 12. Accordingly, the fastening member 30 moves on the main body 20 toward the base end side (A direction shown in FIG. 4) while rotating so as to be guided by the screw groove 21 of the main body 20. At this time, since the fastening member 30 is provided with the slit 33 and the concave slits 35, 35, the opening side of the slit 33 and the concave slits 35, 35 moves to the proximal end side while gradually expanding. As the fastening member 30 is gradually expanded, the outer peripheral surface of the fastening member 30 is pressed so as to be in close contact with the inner surface of the outer pole 12, so that the inner pole 11 is fixed to the outer pole 12. Moreover, since the unevenness | corrugation is formed in the surface of the fastening member 30, it can fix to the inner surface of the outer pole 12 reliably. Further, when attaching, the spring member 40 is firmly attached to the attachment surface, for example, the wall surface, by the elastic force of the spring member 40, so that it does not easily fall off.

  On the other hand, when the inner pole 11 and the outer pole 12 in a fixed state are rotated in the opposite direction, that is, in the direction in which the fastening member 30 is directed toward the distal end (direction B shown in FIG. 4), the fastening is performed. A slight gap is formed between the side surface of the member 30 and the inner surface of the outer pole, and the force by which the outer peripheral surface of the fastening member 30 presses the inner surface of the outer pole is released. The inside of the pole 12 is movable. As a result, the inner pole 11 and the outer pole 12 are in a free state, and the stretchable telescopic rod 1 can be adjusted to a desired length. Since the stopper 20 is provided at the top of the main body 20, the fixing member 30 does not come off the main body 20.

  According to the length adjusting mechanism 1 of the stretchable telescopic rod in the present embodiment, since the outer pole 12 and the inner pole 11 can be expanded and fixed only by the main body 20 and the fastening member 30, the number of parts is small. In addition, according to the length adjusting mechanism 1 of the stretchable telescopic rod according to the present invention, the fastening member 30 is integrally formed, so that the assembly can be performed without being separated. There is an effect that it can be performed very simply and quickly.

  As described above, the preferred embodiment of the present invention has been described in detail. However, the present invention is not limited to the specific embodiment, and within the scope of the gist of the present invention described in the claims, Needless to say, various modifications and changes are possible.

DESCRIPTION OF SYMBOLS 1 Length adjustment mechanism 11 Inner pole 12 Outer pole 13 Stopper member 15 Guide member 20 Main body 21 Screw groove 23 Retaining stopper 30 Fixing member 31 Screw part 33 Slit 35 Concave slit 40 Spring member 41 Support member 41a Notch part 43 Base End member 45 pin

Claims (2)

The inner pole inserted into the hollow outer pole is formed to be extendable by moving in and out of the outer pole, and after adjusting the total length to a desired length, the outer pole and the inner pole are relatively In the length adjustment mechanism of the stretchable telescopic rod that is fixed by rotating,
A body that is elastically supported by a spring member disposed at one end of the inner pole and has a thread groove on the surface;
A substantially cylindrical fastening member provided with a threaded portion that engages with the thread groove provided in the main body,
The main body has a substantially truncated cone shape that gradually decreases in diameter toward the distal end side, and a top stopper is provided with a stopper for preventing movement of the fastening member,
The fastening member has an inclined surface whose inner side surface is aligned with the outer side surface of the main body, and the side surface is longitudinally cut in the vertical direction so that the fastening member can be attached to the main body by elastic deformation. A slit is provided,
By rotating the outer pole and the inner pole relative to each other, a slight gap is formed between the outer peripheral surface of the fastening member and the inner surface of the outer pole, and the outer pole and the inner pole are expanded and contracted. The fastening member reciprocates on the main body between a position where it can be freely moved and a position where the outer peripheral surface of the fastening member is in close contact with the inner surface of the outer pole to fix the outer pole and the inner pole. is formed so as to,
The side wall of the fastening member is set so that the thickness gradually increases from the proximal end side of the main body toward the distal end side,
The distal end portion of the stopper stopper has a substantially truncated cone shape that follows the inner shape on the distal end side of the fastening member,
The slits formed in the side wall are one slit that is completely cut out from the tip to the base end, and one or a plurality of concave slits that are notched in the vertical direction from the tip side, leaving the base end side. The length adjusting mechanism of the stretchable telescopic rod, characterized by comprising: In the length adjusting mechanism of the stretchable telescopic rod according to claim 1,
A length adjusting mechanism for a stretchable telescopic rod, wherein the fastening member has an uneven surface.

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