JPS637110Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an axle-like body that can be removably installed between vertical walls of arbitrary width or between upper and lower walls.

As shown in FIG. 1, a conventional shaft-like body of this kind is inserted into and fitted into an inner shaft 3 such that it can be inserted into and removed from an outer shaft 2, and one end portion 2 of the shaft-like body is spaced apart from each other.
Rubbers 4 and 5 for vertical walls 1a and 1b are fitted to a and 3a, and a coil spring 6 is arranged inside the outer shaft 2 along its longitudinal direction, and one end of the coil spring 6 is attached to the one end 2a of the outer shaft 2. It is known that the coil spring 6 is engaged with a pin 8 which is locked by a pin 7 and fixed to the other end 3b of the inner shaft 3. In use, after adjusting the length of the inner shaft 3 to be slightly longer than the distance between the vertical walls 1a and 1b as shown by the imaginary line by turning the inner shaft 3, the inner shaft 3 is rotated against the biasing force of the coil spring 6. is inserted between the vertical walls 1a and 1b, and the vertical wall 1 is pushed in by the elastic repulsive force of the coil spring 6.
The shaft-like body is fixed by the frictional force between a and 1b and the padding rubbers 4 and 5. However, in such a configuration, the inner shaft must be rotated many times to adjust the length according to the distance between the vertical walls 1a and 1b, which is very time-consuming. As the distance becomes longer, the distance between the pins 7 and 8, that is, the effective length of the coil spring 6 becomes longer, and if the pushing length of the inner shaft 3 is kept constant, the elastic repulsion force becomes smaller and only a small fixing force can be obtained. Since it is fixed by the pushing repulsion force of the inner shaft 3, there is a problem in that a large force is required to attach the shaft-like body, and the fixing force is small, so that in practice, a loading capacity of only about 5 kg can be obtained. In order to solve these problems, as shown in FIGS. 2 and 3, a rod is provided which is slidable in the axial direction from the other end 3b of the inner shaft 3 in the direction of its extension and is not relatively rotatable. 9 is extended, a lock portion 10 is attached to the tip thereof, a compression spring 11 is interposed between this lock portion 10 and the other end portion 3b of the inner shaft 3, and the lock portion 10
An annular groove 13 whose bottom surface is a spiral cam surface 14 is formed on the outer periphery of the shaft portion 12 that fits loosely into the outer shaft 2, and the annular groove 13 is configured to engage with the inner surface of the outer shaft 2. It has been proposed that a split ring 15 having a diameter expanding force and having a projecting portion 16 protruding from the inner periphery of one end in the circumferential direction that engages with the cam surface is fitted.
When using it, pull out the inner shaft 3 so that it is slightly longer than the distance between the vertical walls 1a and 1b, and then
By turning , the shaft portion 12 is rotated to engage the protrusion 16 of the split ring 15 and the cam surface 14,
The lock portion 10 is fixed by engaging the outer shaft 2 and the shaft portion 12 via the split ring 15, and then the compression spring 1
Push the inner shaft 3 against the urging force of the vertical wall 1
It is inserted between a and 1b. According to such a configuration, the length of the shaft-like body can be easily adjusted and the effective length of the compression spring 11 remains unchanged regardless of its length, but since it is fixed by the pushing repulsion force of the inner shaft 3, the force is reduced. In addition, there are problems in that a large fixing force cannot be obtained, and due to its structure, it can only be applied to items with a fairly large outer diameter.

In view of the above-mentioned conventional problems, the present invention allows for easy length adjustment and installation and fixation of the axoid body, provides a large loading capacity, and can also be applied to shaft-like bodies with a considerably small diameter, if necessary. The purpose of the present invention is to provide an erected axoid body that can be obtained.

In order to achieve the above object, the present invention includes an inner shaft inserted into and fitted into the outer shaft so as to be freely inserted and removed, and a locking mechanism having a pair of inclined cam surfaces is provided at the insertion side end of the inner shaft. The inner shaft can be fixed at any position within the outer shaft, and a contact member with a wall surface is provided at each end of the outer shaft and the inner shaft that are spaced apart from each other, and
A pressing rotary body is interposed between at least one of the abutting bodies and the end of the outer shaft or the inner shaft, and a screw shaft is provided between the end of the outer shaft or the inner shaft and the pressing rotary body. A nut member screwed onto the screw shaft is supported on the other side, and the pressing rotary body is rotated to push out the abutment body.

In use, the inner shaft is first pulled out from inside the outer shaft until the abutting bodies at both ends approach or abut the vertical wall or the upper and lower walls, and the inner shaft and outer shaft are fixed by the locking mechanism. After this, the pressing rotary body is rotated, and as a result, the pressing rotary body receives a screwing action based on the screw engagement between the screw shaft and the nut member, and is pushed outward, so that the abutting body is pressed against the wall surface. They are strongly pressed together, and a so-called shaft-like body consisting of an outer shaft and an inner shaft is installed between vertical walls or between upper and lower walls.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 9. Reference numeral 21 denotes an outer shaft made of a pipe coated with a synthetic resin, and an inner shaft 22 made of a pipe coated with a synthetic resin is inserted into and removably inserted into the outer shaft 21. 23 is outer shaft 2
The inner shaft 22 is slidably held by a synthetic resin bearing that is press-fitted into one end 21a on the insertion side of the inner shaft 22 of No. 1. Reference numeral 24 denotes a wall abutting body disposed at the other end portions 21b, 22b of the outer shaft 21 and the inner shaft 22, which are spaced apart from each other, and is attached so as to be able to swing freely within a certain range. A pressing plate 24a, which is made of elastic material such as rubber and has a large coefficient of friction, is bonded thereto. 25 is a pressing rotating body screwed onto the other end 22b of the inner shaft 22 so as to be movable in the axial direction;
The abutting body 24 on the inner shaft 22 side is connected to this pressing rotary body 2.
It is installed on 5. This pressing rotary body 25 has a disk portion 25b integrally molded on the inner periphery of a middle portion of a cylindrical portion 25a that can be externally fitted onto the inner shaft 22, and a screw shaft 26 is disposed so as to pass through the axial center position of this disk portion 25b. At the same time, its head is fitted into the hexagonal hole 25c of the disc part 25b, and is fastened with a nut 27 from the opposite side to be integrally fixed. Nut member 28 welded and fixed to the inner circumference of
It is installed by screwing it into the Reference numeral 29 denotes a mounting member of the contact body 24 which is fitted and fixed to the end of the cylindrical portion 25a of the pressing rotary body 25 opposite to the inner shaft 22, and 30 is a similar fitting member which is fitted and fixed to the other end 21b of the outer shaft 21. It is a mounting member. Reference numeral 31 denotes a locking mechanism interposed between one end 22a of the inner shaft 22 and the inner surface of the outer shaft 21 at its extended position, and locks the outer shaft 21 and the inner shaft 2 at any insertion position of the inner shaft.
It is constructed so that 2 can be fixed. That is,
A nut member 32 is fitted and fixed to one end 22a of the inner shaft 22, a bolt 33 is screwed into the nut member 32 from the outside of the inner shaft 22, and its tip 33b is caulked so as not to come off. This bolt 3
3 is fitted with a cylindrical cam body 35 formed on a cam surface 36 whose side surface opposite to the nut member 32 is inclined with respect to the axis, and whose side surface on the nut member 32 side is inclined with respect to the axis. It is perpendicular and abuts against the nut member 32 via a washer 34. The through hole 37 of the bolt 33 of the cylindrical cam body 35 is formed to have an oval cross section or a large diameter so that the cylindrical cam body 35 can be displaced eccentrically. The head 33a of the bolt 33 has a cam surface 39 corresponding to the cam surface 36 of the cylindrical cam body 35, and elastically engages with the inner surface of the outer shaft 21 on the opposite side from the cylindrical cam body 35. A locking cam body 38 having a locking portion 40 is fixed. This fixing structure of the locking cam body 38 and the bolt 33 is such that the bolt 33
passes through the main body 38a of the locking cam body 38, and its head 33a fits into the hexagonal hole 38b of the main body 38a.
It is fitted in and fixed together with adhesive or caulking to prevent it from slipping out. Further, the locking portion 40 includes a thick-walled large diameter portion 41a at the tip of a cylindrical portion 41 extending from the main body portion 38a of the locking cam body 38.
The cylindrical portion 41 is formed with cuts 42 in the axial direction at multiple locations in the circumferential direction of the cylindrical portion 41.
The outer surface of the thick-walled large-diameter portion 41a is brought into pressure contact with the inner surface of the outer shaft 21 due to the elasticity of the thick-walled large-diameter portion 41a. Furthermore, although the outer peripheral surfaces of the cylindrical cam body 35 and the locking cam body 38 are approximately cylindrical, more precisely, both cam bodies 3
5 and 38 close to each other, and their cam surfaces 3
When 6 and 39 collide with each other and move eccentrically, the outer shaft 2
The area of approximately 120° on the side that comes into contact with the inner surface of the outer shaft 21 is set to a radius that is approximately the same as or slightly larger than the radius R ₀ of the inner surface of the outer shaft 21. The contact area with the inner surface of the outer shaft 21 during eccentric movement of the cam body 38 is increased, and the remaining area is considerably smaller than the inner diameter of the outer shaft 21 so that these cam bodies 35 and 38 can slide smoothly inside the outer shaft 21. It is set to diameter.

In the above configuration, in order to install the shaft-like body 20 between the vertical walls 1a and 1b, first place the shaft-like body 20 at a desired position between the vertical walls 1a and 1b, as shown in FIG. 9a. The contact body 24 of the other end 21b of the outer shaft 21 is brought into contact with the vertical wall 1a, and the inner shaft 22 is pulled out as shown by the arrow against the locking force of the locking portion 40.
The contact body 24 on the pressing rotary body 25 side is brought close to or in contact with the vertical wall 1b. Next, as shown in FIG. 9b, when the inner shaft 22 is rotated in the direction of the arrow, the locking cam body 38
is engaged with the inner surface of the outer shaft 21 and stopped, so the inner shaft 22
is screwed toward the locking cam body 38, and the cylindrical cam body 35 moves toward the locking cam body 38 via the washer 34. At this time, the rotation of the cylindrical cam body 35 is prevented by the abutment between the cam surface 36 of the cylindrical cam body 35 and the cam surface 39 of the locking cam body 38, and the abutment of these cam surfaces 36, 39 causes both the cam bodies 35, 38 to As they move toward each other, they move eccentrically toward each other radially outward. As the inner shaft 22 spirals, the cam bodies 35 and 38 are strongly pressed against each other in the axial direction, so that the cam bodies 35 and 38 are pushed against the inner surface of the outer shaft 21 through the abutment between the cam surfaces 36 and 39. The outer shaft 21 and the inner shaft 22 are firmly fixed through the cam bodies 35, 38, the bolt 33, and the nut member 32 by being strongly pressed against each other. Incidentally, eccentric movement of the locking cam body 38 is allowed by the gap between the threaded portion of the bolt 33 and the nut member 32, and eccentric movement of the cylindrical cam body 35 is allowed by the large diameter through hole 37. Thereafter, as shown in FIG. 9C, the pressing rotary body 25 is rotated in the direction of the arrow.
5 toward the vertical wall 1b, the abutting body 24 is strongly pressed against the vertical wall 1b, and the axis-like body 20 is firmly constructed between the vertical walls 1a and 1b. By using the screw mechanism to press the contact body 24 against the vertical walls 1a and 1b in this way, it is extremely easy to operate, yet a strong fixing force is obtained, and the loading capacity is increased to 30 kg, which is more than 5 times that of the conventional method. In addition, the lock portion 31 can sufficiently withstand the large pressing force required for this purpose.

The shaft-like body 20 installed between the vertical walls 1a and 1b in this way can be used as a hanger or drying rack, as shown in FIG. 10, or as a rail for hanging curtains or partitions, as shown in FIG. It can be used for a variety of purposes.

In addition, in the above embodiment, the screw shaft 26 and the bolt 33
Since the two screws have the same twisting direction, the rotation direction of the inner shaft 22 and the rotation direction of the rotary pressing body 25 are opposite to each other, but if either one of them is made with reverse threads, they can be rotated in the same direction. Furthermore, it goes without saying that the present invention is not limited to a single axoid, but can also be applied to a shelf or the like constructed by combining axoid bodies.

As explained above, the shaft-like body according to the present invention has the inner shaft pulled out from the outer shaft and fixed by the lock mechanism, and the pressing rotary body has a screw action based on the screw engagement between the screw shaft and the nut member. push it outward,
The abutting body is brought into pressure contact with the wall surface, and the abutting body can be brought into pressure contact with the wall surface with an extremely large force, making the erection operation extremely simple and easy compared to conventional methods, and with a significant loading capacity. You can get it.

[Brief explanation of drawings]

Fig. 1 is a sectional plan view of a conventional example, Fig. 2 is a partial sectional front view of main parts of another conventional example, Fig. 3 is a sectional view taken along line AA in Fig. 2, and Figs. 4 to 9 are One embodiment of the present invention is shown, FIG. 4 is a front view, FIG. 5 is an enlarged longitudinal sectional front view of the main part, and FIG. 6 is a BB sectional view of FIG. 5.
Fig. 7 is a sectional view taken along line CC in Fig. 5, Fig. 8 is a sectional view taken along line DD in Fig. 5, Figs. FIG. 11 is a front view showing an example of use of the axoid. 20 is the axoid body, 21 is the external axis, 22 is the internal axis, 24
2 is a contacting body, 25 is a pressing rotating body, 26 is a screw shaft, 2
8 is a nut member, 31 is a lock portion, 32 is a nut member (an element of a screw mechanism), 33 is a bolt (an element of a screw mechanism), 35 is a cylindrical cam body (a cam element), 3
6 and 39 are cam surfaces, 38 is a locking cam body (cam element), and 40 is a locking portion.

Claims (1)

[Scope of utility model registration request] An inner shaft is inserted into and retracted from the outer shaft, and a bolt is screwed into the insertion side end of the inner shaft so that it can move forward and backward, and the tip of the bolt is fixed. and a locking cam body whose outer peripheral surface is formed as a locking part that presses against the inner peripheral surface of the outer shaft, and a cam surface which is removably opposed to the cam surface of the locking cam body and which is attached to an end surface of the inner shaft. A locking mechanism comprising a cylindrical cam body loosely fitted onto the bolt while in contact with the bolt is provided,
The inner shaft can be fixed at any position within the outer shaft, and an abutting body for contacting a wall surface is provided at each end of the outer and inner shafts that are spaced apart from each other, and at least one of the abutting bodies and the outer A pressing rotary body is interposed between the end of the shaft or the inner shaft, and a screw shaft is attached to either the end of the outer shaft or the inner shaft and the pressing rotary body, and a screw shaft is screwed to the screw shaft on the other side. An erected axle-like body characterized in that it is configured to support a mating nut member and rotate the pressing rotary body to push out the abutment body.