JP6222871B1 - Strut fixed type support - Google Patents

Abstract

Provided is a strut-fixed support column that can be installed in a stable state to ensure safety even when the ceiling is slightly inclined with respect to the floor, and can expand the applicable area. An upper frame body 1 having a ceiling pressing body 3, a lower frame body 2 having a floor contact body 4, and a lock mechanism for locking the upper frame body 1 so as not to move up and down are provided. The ceiling pressing body 3 includes an upper base body 5 attached to the upper frame body 1 and an upper tilting body 6 connected to the upper base body 5 so as to be capable of relative tilting. The upper tilting body 6 is sandwiched up and down by the upper base body 5 and the upper stopper 17 and can be tilted with respect to the upper base body 5 but cannot be detached. The upper recessed flange 20 projecting from the upper tilting body 6 and the upper retaining flange 21 projecting from the peripheral edge of the upper retaining member 17 are vertically opposed via the tilting gap E1. In a state where the support column is installed between the floor F and the ceiling R, the upper tilting body 6 tilts within the tilt gap E1 to absorb the tilt of the ceiling R or the floor F. [Selection] Figure 1

Description

  The present invention relates to a strut-fixed support column installed between a floor and a ceiling wall.

  With regard to this type of support, the present applicant has previously proposed the fixed-type support of Patent Document 1. There, the struts are composed mainly of the lower diameter large pipe, the upper diameter small pipe that can be slid up and down with respect to the pipe, and the lock provided between the two pipes. doing. A floor placing member is fixed to the lower end of the large diameter pipe, and a ceiling receiving member is fixed to the upper end of the small diameter pipe. The locking device is composed of a fixing ring fixed to the upper end of the large-diameter pipe, a fastening ring for holding and fixing the middle part of the small-diameter pipe, a handle provided between these rings, a pair of links, and the like. is there. A compression coil spring is disposed between the small-diameter pipe and the ceiling receiving member, and the ceiling receiving member is pressed against the ceiling by a spring force when the spring is compressed and deformed to maintain the installation state of the column.

  When using a strut-fixed support column, slide the small-diameter pipe upwards with the large-diameter pipe standing upright on the floor, and place the ceiling receiving member through a gap of about 1 cm from the ceiling. Make them face each other. In this state, the handle is operated to swing downward, and the fastening ring is reduced in diameter by the cam mechanism to hold and fix the small diameter pipe. In the process of swinging the handle downward, the lower end of the link descends and is received by the lower end of the guide groove, so that the subsequent handle approaches the fixing ring while swinging around the fixed shaft at the top of the link. The small diameter pipe and the fastening ring are pushed up by the movement to bring the ceiling receiving member into close contact with the ceiling, and the column is fixed between the floor and the ceiling wall.

  The present applicant has commercialized the strut-fixed column of Patent Document 1 and provides it to the market (product name, best position bar, product number NBP-100-90). In a commercially available strut-fixed support column, a display unit for displaying whether or not the pressing load is appropriate is provided on the upper portion of the large-diameter pipe. The display section consists of a yellow display section and a blue display section. When the yellow display section is visible, it means that the pressing load of the ceiling receiving member is insufficient, and the yellow display section is covered with the ceiling receiving member. In the state where only the blue display part is visually recognized, it means that the pressing load is appropriate. Therefore, the pressing load of the ceiling receiving member can be optimized by adjusting the spring pressure with the adjusting bolt while viewing the display state of the display unit. In the following description, the tension-fixed support column of Patent Document 1 and the tension-fixed support column provided on the market are collectively referred to as a conventional tension-fixed support column.

Japanese Patent No. 3952370 (paragraph numbers 0021 to 0044, FIG. 1)

  Conventional strut-fixed struts are widely used as care products in nursing homes, hospitals, and private houses, and there is always a stable demand. However, when the ceiling or the floor is tilted, the strut-fixed support column cannot be installed in a stable state, causing a safety problem. For example, when a column is installed in a place where the ceiling is tilted with respect to the floor, the ceiling receiving member cannot be in close contact with the ceiling, so when a shocking lateral load is applied to the column, the ceiling receiving member or the floor placing member There is a risk that the column will slip and the column will collapse. Therefore, it is clearly stated in the instruction manual that it cannot be installed in a place where the ceiling or floor is inclined as a restriction when installing. However, since it is difficult to clearly determine whether the floor and the ceiling are horizontal or parallel, a column may be installed even if either the floor or the ceiling is slightly tilted In such a case, there was a problem in that the column could not be installed in a stable state.

  Further, in the conventional strut-fixed support column, in order to avoid an excessive pressing load on the ceiling of the ceiling receiving member, the handle is placed with the ceiling receiving member facing the ceiling through a gap of about 1 cm. Is swinging downward. However, since it is not possible to confirm that the clearance between the ceiling receiving member and the ceiling is appropriate only after the handle is swung downward, adjust the gap and adjust It was necessary to try to fix it once or again, and it took time and effort to install the fixed post.

  Furthermore, in the conventional strut-fixed support column, the ceiling receiving member is pressed against the ceiling with the pressing force of the spring in a state where the support column is installed. Therefore, when the support column is lifted upward against the urging force of the spring, the entire support column may move to the ceiling side, the floor placing member may move away from the floor, and the support column may fall down. is there. In that case, it was necessary to install the support again, which was troublesome. In addition, in the conventional strut-fixed support column, a pressing load is provided by adjusting the spring pressure with an adjusting bolt while providing a display on the upper part of the large-diameter pipe while observing the display state of the yellow display and blue display. Was determined to be appropriate. However, since the display unit is provided on the upper part of the large-diameter pipe near the ceiling, it is difficult to accurately see the positional relationship between the ceiling receiving member and the blue display unit, and the pressing load on the ceiling receiving member varies depending on the operator. It was likely to occur, and the pressing load was often larger than the appropriate value.

  In addition to the above, conventional strut-fixed struts have a structure in which water accumulates inside the large-diameter pipe when the strut is exposed to rain, and the metal fittings and screws that connect the large-diameter pipe and the floor-standing member rust. Can not be installed in places where rain falls, such as verandas and entrance porches, and the applicable places were limited.

The object of the present invention is to provide a strut-fixed support column that can improve the safety by installing the support column in a stable state even when the ceiling or the floor is slightly inclined, and thus can expand the applicable place. It is to provide.
An object of the present invention is to provide a strut-fixed support column that is easy to use and can be easily and reliably installed by anyone, and thus can save the labor required to install the strut. It is to provide.
The purpose of the present invention is to provide a tension fixing that can further prevent safety even when the support is lifted upward against the biasing force of the spring, thereby reliably preventing the floor contact body from moving off the floor. It is to provide a mold support.
An object of the present invention is to provide a strut-fixed support column that can clearly determine whether or not the pressing load of the ceiling pressing body against the ceiling is improved by improving the structure for displaying the pressing load of the ceiling pressing body.

  The strut-fixed support column according to the present invention includes an upper frame 1 provided with a ceiling pressing body 3 that contacts the ceiling R, a lower frame 2 provided with a floor contacting body 4 that contacts the floor F, A lock mechanism is provided that locks and holds the upper frame body 1 pulled out from the frame body 2 so as not to move up and down. As shown in FIG. 3, the ceiling pressing body 3 includes an upper base body 5 attached to the upper frame body 1 and an upper tilting body 6 connected to the upper base body 5 so as to be capable of relative tilting. The upper tilting body 6 is sandwiched up and down by the upper base body 5 and an upper stopper 17 fastened and fixed to the upper part of the upper base body 5 so that it can tilt with respect to the upper base body 5 but cannot be detached. It is attached to. As shown in FIG. 1, the upper recessed flange 20 projecting from the upper tilting body 6 and the upper retaining flange 21 projecting from the peripheral edge of the upper retaining member 17 are vertically opposed via the tilting gap E1. In the state where the support column is installed between the floor F and the ceiling R, the upper tilting body 6 tilts within the tilt gap E1 to absorb the tilt of the ceiling R or the floor F.

  A spring unit 8 that absorbs the pushing-up operation of the upper frame body 1 is mounted between the boss body 7 fastened and fixed to the upper frame body 1 and the upper base body 5. As shown in FIG. 3, the spring unit 8 includes a lower holder 25 that is received by the boss body 7, an upper holder 26 that is received by the upper base body 5, and a ceiling disposed between the holders 25 and 26. A spring 27 is provided. The boss body 7 and the upper holder 26 are fastened by the screw fastening body 34, and the lower holder 25 and the upper holder 26 are integrated so as to be slidable relative to each other.

  The floor contact body 4 includes a lower base body 41 attached to the lower frame body 2 and a lower tilting body 42 connected to the lower base body 41 so as to be capable of relative tilting. As shown in FIG. 7, the lower tilting body 42 is vertically sandwiched between the lower base body 41 and a lower stopper 56 screwed into the lower base body 41 so that it can tilt with respect to the lower base body 41. It cannot be removed. As shown in FIG. 6, the lower recess flange 58 projecting from the lower tilting body 42 and the lower retaining flange 59 projecting from the peripheral edge of the lower stopper 56 are vertically opposed via the tilting gap E2. In a state where the support column is installed between the floor F and the ceiling R, the tilting of the ceiling R or the floor F is tilted up within the tilt gap E1, and the downward tilt is tilted within the tilt gap E2. The body 42 cooperates to absorb.

  A base holder 43 is fastened and fixed to the lower end of the lower frame body 2. A lower connection boss 48 provided on the inner surface of the lower base body 41 is externally fitted to the base holder 43, and the lower connection boss 48 and the base holder 43 are connected to each other by a screw fastening body 68 so as to be relatively slidable. A floor spring 63 is disposed between the lower connecting boss 48 and the base holder 43.

  The spring pressure of the floor spring 63 is set smaller than the spring pressure of the ceiling spring 27. In the state where the upper frame body 1 is pushed up by the lock mechanism, the initial push-up operation of the upper frame body 1 is absorbed by the floor spring 63.

  A pressing force display structure for displaying appropriateness of the pressing force of the ceiling pressing body 3 is provided on the upper base body 11. As shown in FIG. 14, the pressing force display structure includes a display disk 116 that is rotatably supported inside the base body 11, a disk operating body 117 that rotates the display disk 116, and a disk operating body 117. A cam mechanism is provided between the upper holders 26 and converts the relative sliding movement of the upper holder 26 and the lower holder 25 into a rotational movement. In a state in which the lower holder 25 and the upper holder 26 are slid relative to each other, the disk operation body 117 that has received the rotation operation converted by the cam mechanism rotates the display disk 116 and is provided around the display disk 116. The display position of the load display 118/119 is switched. A display window 128 for visually recognizing the load displays 118 and 119 is opened on the peripheral surface of the base body 11 facing the floor F.

  A braking structure 137 that prevents the free upper frame body 1 from falling by its own weight is provided at the lower part of the upper frame body 1. As shown in FIG. 17, the brake structure 137 includes a connecting frame 140 and a holding frame portion 141 fixed to the lower portion of the upper frame body 1, an extrusion plug 143 accommodated in the frame portion 141, and an extrusion operation of the extrusion plug 143. And a brake blade 144 that is pushed and biased by a push plug 143. The brake blade 144 includes a brake shoe 146 that is in close contact with the inner surface of the lower frame body 2 and a passive piece 147 that is pushed out by the push-out plug 143. The brake shoe 146 is pushed out by the brake spring 142 and the push-out plug 143 and is in pressure contact with the inner surface of the lower frame body 2.

  The brake blade 144 is connected to the push-out plug 143 so as to be vertically slidable. The push-out plug 143 and the passive piece 147 are in contact via an inclined cam surface 148. In the state where the upper frame body 1 moves downward, the cam surface 148 is pushed into the holding frame portion 141 against the urging force of the brake spring 142 when the upper frame body 1 moves downward, and when the upper frame body 1 moves upward, The push plug 143 is inclined in the direction in which the push plug 143 is pushed out from the holding frame portion 141.

  Rainwater that has entered the inside of the lower frame body 2 is moved to the floor F side on each of the connecting cylinder portion 65 of the base holder 43, the inner bottom of the lower connecting boss 48, and the inner bottom of the screw portion 73 of the lower stopper 56. Drain holes 161, 162, and 163 for draining are formed in a vertically penetrating manner (see FIG. 6).

  In the present invention, the upper base body 5 and the upper tilting body 6 are provided on the ceiling pressing body 3 and the upper tilting body 6 is sandwiched up and down by the upper base body 5 and the upper retaining member 17 in the strut fixed type column. Thus, the upper tilting body 6 can be tilted with respect to the upper base body 5 but cannot be detached. Furthermore, in the state where the support column is installed between the floor F and the ceiling R, the upper tilting body 6 tilts within the range of the tilting clearance E1 between the upper recessed flange 20 and the upper retaining flange 21 facing vertically. The inclination of the ceiling R or the floor F can be absorbed. According to the strut-fixed support column, the support column 6 can be installed in a state in which the upper tilting body 6 is tilted according to the inclination of the ceiling R or the floor F and is firmly attached to the ceiling R. Therefore, even if a lateral load is applied to the support column, the ceiling pressing body 3 can be prevented from slipping and the safety of the tension-fixed support column can be improved. In addition, even if it is not possible to clearly determine whether one of the floor F and the ceiling R is slightly inclined, the column can be installed in a stable state, so compared to this type of conventional column, It is possible to secure the safety by enlarging the applicable places of the strut fixed type support. Furthermore, since the upper recessed flange 20 and the upper retaining flange 21 are vertically opposed to each other via the tilt gap E1, it is not necessary to consider the direction of the tilt of the ceiling R or the floor F, and the upper tilting body 6 is attached to the ceiling R. Alternatively, it can be tilted in all directions following the inclination of the floor F, and the column can be easily installed accordingly.

  The spring unit 8 is constituted by the lower holder 25 and the upper holder 26, and the ceiling spring 27 disposed between the holders 25 and 26, and the boss body 7 fixed to the upper frame 1 and the upper holder 26 are screw-fastened 34. The two holders 25 and 26 are integrated so as to be slidable relative to each other. According to the ceiling pressing body 3, when the upper frame 1 is pushed up by the lock mechanism, the lower holder 25 moves along with the upper frame 1 and the ceiling spring 27 is compressed and deformed. The entire ceiling pressing body 3 is pressed against the ceiling R. Therefore, it can be solved that the ceiling pressing body 3 is unnecessarily pushed up and an excessive pushing force acts on the ceiling structure and is damaged. Further, since the lower holder 25 and the upper holder 26 slide relative to each other inside the upper base body 5 to absorb the pushing-up operation of the upper frame body 1, dust or the like adheres to the sliding surfaces of both the holders 25 and 26. Thus, the reliability of the operation of the spring unit 8 can be maintained for a long time.

  The lower base body 41 and the lower tilt body 42 are provided on the floor contact body 4, and the lower tilt body 42 is held between the lower base body 41 and the lower stopper 56 so that the lower tilt body 42 is attached to the lower base body 41. On the other hand, it can be tilted but cannot be removed. Further, in the state where the support column is installed between the floor F and the ceiling R, the lower tilting body 42 tilts within the range of the tilting clearance E2 between the lower recessed flange 58 and the lower retaining flange 59 facing vertically, The inclination of the ceiling R or the floor F can be absorbed. According to such a column, the tilting of the ceiling R or the floor F can be absorbed by the upper tilting body 6 and the lower tilting body 42 in cooperation. Therefore, the inclination with respect to the upper base body 5 and the lower base body 41 of the upper tilting body 6 and the lower tilting body 42 is reduced, and the upper frame body 1 and the lower frame body 2 are in a more vertical posture and in a stable state. Can be stretched and fixed. Further, even when the degree of inclination of the ceiling R or the floor F is large, the upper tilting body 6 and the lower tilting body 42 cooperate to absorb the previous tilt. The applicable place of the support can be further expanded.

  A base holder 43 is fastened and fixed to the lower end of the lower frame body 2 and a lower connecting boss 48 is externally fitted to the holder 43 so that both the 43 and 48 are connected to each other by a screw fastening body 68 so as to be slidable relative to each other. . Further, a floor spring 63 is disposed between the lower connecting boss 48 and the base holder 43. According to such a column, the ceiling spring 27 and the floor spring 63 are elastically deformed, and the ceiling pressing body 3 and the floor contacting body 4 can be pressed against the ceiling R or the floor F. Therefore, when an external force in the vertical direction acts on the upper frame body 1 or the lower frame body 2, the ceiling pressing body 3 and the floor contact body 4 are reliably prevented from moving away from the ceiling R or the floor F. Thus, the support can be prevented from collapsing and safety can be improved.

  In the state where the spring pressure of the floor spring 63 is set smaller than the spring pressure of the ceiling spring 27 and the upper frame body 1 is pushed up by the lock mechanism, the initial push-up operation of the upper frame body 1 is absorbed by the floor spring 63. It is possible to prevent the ceiling pressing body 3 from being excessively pressed against the ceiling R by delaying the timing at which the ceiling spring 27 starts to compress and deform. This is because the handle is swung downward with the ceiling support member facing the ceiling through a gap of about 1 cm in the conventional support column, and the timing at which the compression coil spring begins to elastically deform is delayed. This is to prevent the receiving member from being excessively pressed against the ceiling and to obtain the same effect. Further, since the initial push-up operation of the upper frame body 1 is absorbed by the floor spring 63, when installing the support column, the lock handle 79 is locked with the upper tilting body 6 applied to the ceiling R and the entire support column temporarily installed. The ceiling pressing body 3 can be pressed against the ceiling R without excess or shortage simply by swinging to the posture. Therefore, anyone can securely and easily install the support column, and can save the labor required for installation of the support column, and provide a strut-fixed support column with excellent usability.

  According to the pressing force display structure constituted by the display disk 116, the disk operation body 117, and the cam mechanism, the display disk 116 is operated by the disk operation body 117 in a state where the upper and lower holders 25 and 26 slide relative to each other. The display position of the load display 118/119 can be switched by rotating the. In addition, since the display window 128 is opened on the peripheral surface of the base body 11 facing the floor F, the display status of the load displays 118 and 119 that have reached the window 128 can be clearly recognized by simply looking up the display window 128. It can be accurately determined whether or not the load displays 118 and 119 are switched to an appropriate state. Therefore, it is possible to well prevent the pressing load of the ceiling pressing body 3 from being varied by the operator or the pressing load from exceeding an appropriate value. Further, the load display 118/119 is switched by rotating the display disk 116 by the cam mechanism and the disk operating body 117, which operates according to the relative sliding amount of the upper and lower holders 25/26, so that the load display 118/119 is switched. Can be accurately displaced according to the amount of compressive deformation of the ceiling spring 27.

  The connecting frame 140, the holding frame portion 141, the brake spring 142, the push plug 143, the brake blade 144, and the like constitute a brake structure 137, and the brake shoe 146 of the brake blade 144 is connected to the inner surface of the lower frame body 2 by the brake spring 142. It was made to press. According to such a braking structure 137, the upper frame 1 that moves downward can be braked by the frictional resistance generated between the lower frames 2 of the brake shoes 146. Therefore, it is possible to prevent the upper frame body 1 from being dropped into the lower frame body 2 due to its own weight, and to move the upper frame body 1 slowly and safely. In addition, since the upper frame 1 inserted into the lower frame 2 is supported by the three members of the holding ring 78, the urging ring 136, and the brake shoe 146, the upper frame 1 can be prevented from wobbling. The upper frame 1 can be smoothly inserted into and removed from the lower frame 2.

  The brake blade 144 is connected to the push plug 143 so as to be slidable up and down, and the push plug 143 and the passive piece 147 are brought into contact with each other via an inclined cam surface 148. Further, the cam surface 148 is a state in which the push plug 143 is pushed into the holding frame portion 141 against the urging force of the brake spring 142 and the upper frame 1 is moved upward when the upper frame 1 is moved downward. Then, the extrusion plug 143 is inclined in the direction in which it is pushed out from the holding frame portion 141. According to such a braking structure 137, when the upper frame 1 moves downward, the push plug 143 is pushed into the holding frame portion 141, so that the brake spring 142 is compressed and deformed more than before, and the spring of the brake spring 142 is The pressure increases and the brake blade 144 is strongly pressed against the lower frame body 2 by that amount. Further, in the state in which the upper frame body 1 moves upward, the push plug 143 is pushed out from the holding frame portion 141, so that the brake spring 142 is extended and deformed more than before, and the spring pressure of the brake spring 142 is reduced, The pressing force against the lower frame 2 of the brake blade 144 is reduced accordingly. As a result, it is possible to reduce the frictional resistance when the upper frame body 1 is pulled out and to easily and easily perform the column installation work.

  When drain holes 161, 162, and 163 are formed in a vertically penetrating manner in the connecting cylindrical portion 65 of the base holder 43, the lower connecting boss 48, and the threaded portion 73 of the lower stopper 56, the rainwater that has entered the inside of the lower frame 2 It can flow down from the drain holes 161, 162, and 163 and drain to the floor F side. Along with this, it is possible to install rain struts such as verandas and entrance porches so that rainwater can collect inside the lower frame 2 and the floor contact body 4, so that the fixed struts can be used. Can expand where possible.

It is a vertical front view which shows the ceiling pressing body of the tension fixed type | mold support | pillar which concerns on this invention. It is a front view of the strut fixed type | mold support | pillar which concerns on this invention. It is an exploded sectional view of a ceiling press object. It is the sectional view on the AA line in FIG. It is a vertical front view which shows the inclination absorption operation | movement of a ceiling pressing body. It is a vertical front view which shows the floor-contact body of the strut fixed type | mold support | pillar which concerns on this invention. It is an exploded sectional view of a flooring body. It is the BB sectional view taken on the line in FIG. It is a vertical front view which shows the inclination absorption operation | movement of a flooring body. It is a vertical side view of the lock mechanism which locks and holds an upper frame. It is CC sectional view taken on the line in FIG. It is a vertical side view of the state which locked the lock handle. It is a longitudinal cross-sectional view which shows pressing force display structure. It is a top view of pressing force display structure. It is E arrow line view in FIG. It is operation | movement explanatory drawing which shows the operating state of pressing force display structure. It is sectional drawing which shows the urging | biasing ring and braking structure of an upper frame. It is the cross-sectional top view and perspective view which show another Example of a biasing ring. It is the cross-sectional top view and perspective view which show another Example of a braking structure. It is a disassembled perspective view of the braking structure which concerns on another Example. It is a side view which shows another example of use of a strut fixed type | mold support | pillar.

(Example) FIG. 1: thru | or 17 has shown the Example of the support | pillar fixed type | mold support | pillar which concerns on this invention. In the present invention, “front / rear”, “left / right”, and “upper / lower” refer to the cross arrows shown in FIG. 2 and FIG. In FIG. 2, the strut-fixed support column includes an upper frame 1 having a ceiling pressing body 3 that contacts the ceiling R, a lower frame 2 having a floor contacting body 4 that contacts the floor F, A lock mechanism is provided that locks and holds the upper frame body 1 pulled out from the frame body 2 so as not to move up and down. The lower frame 2 is formed of a round pipe made of high-strength aluminum alloy, and the upper frame 1 is formed of a round pipe made of stainless steel. When the outer diameter of the lower frame 2 is 45 mm, the outer diameter of the upper frame 1 is 32 mm, and the upper frame 1 can be inserted into and removed from the lower frame 2.

  1 and 3, the ceiling pressing body 3 includes an upper base body 5 attached to the upper frame body 1 and an upper tilting body 6 connected to the upper base body 5 so as to be capable of relative tilting. Between the boss body 7 fixed to the inner surface of the upper end of the frame body 1 and the upper base body 5, a spring unit 8 that absorbs the pushing-up operation of the upper frame body 1 and presses and urges the upper base body 5 against the ceiling R is disposed. It is. The upper base body 5 is formed of a plastic molded product integrally including a base body 11 having a downwardly curved and tapered shape and an upper connection boss 12 in the center of the base body 11. Support ribs 13 for receiving the tilting body 6 are provided orthogonally.

  The upper tilting body 6 is formed in a disc shape, and an upper connecting recess 14 that is engaged and supported by the previous support rib 13 is formed on the lower surface thereof, and an upper tilting recess 15 is formed in the center of the upper surface. Anti-slip bodies 16 that can be elastically deformed are fixed at four locations around the upper surface of the upper tilting body 6. The upper connecting recess 14 is externally engaged with the support rib 13, and the upper removal stopper 17 attached to the upper tilting recess 15 and the nut 19 are screwed into the screw 18 inserted through the upper wall of the upper connecting boss 12. The body 6 and the upper base body 5 can be integrated. That is, the upper tilting body 6 is sandwiched up and down by the upper base body 5 and the upper extraction stopper 17 fastened and fixed to the upper portion of the upper base body 5 so that it can tilt with respect to the upper base body 5 but is detached. Is mounted impossible.

  The upper tilting body 6 and the upper retaining member 17 in the above state have a tilting gap E1 between the upper recessed flange 20 projecting from the bottom of the upper tilting recess 15 and the upper retaining flange 21 projecting from the periphery of the upper retaining member 17. (See FIG. 1). Therefore, as shown in FIG. 5, for example, even when the ceiling R is inclined with respect to the horizontal plane by an angle θ1, the upper tilting body 6 tilts with respect to the upper base body 5 within the range of the tilting clearance E1. Thus, since the inclination of the ceiling R can be absorbed, the upper base body 5 can be pressed against the ceiling R by a column that stands vertically with respect to the horizontal floor F. The upper tilting body 6 can tilt up to a state indicated by an imaginary line in FIG.

  In order to attach the spring unit 8 to the upper frame body 1, the boss body 7 is fitted into the upper inner surface of the upper frame body 1, and a pair of opposing screws 24 are screwed into the boss body 7, so that the boss body 7 is attached to the upper frame body 1. Fastened to body 1. As shown in FIG. 3, the spring unit 8 includes a lower holder 25 received by the boss body 7, an upper holder 26 received by the upper base body 5, and a compression coil type disposed between the holders 25 and 26. The ceiling spring 27 is provided. The lower holder 25 is formed of a plastic molded product integrally including a lower cylindrical wall 28 that is externally fitted to the boss body 7 and the upper frame 1, and an upper cylindrical wall 29 that accommodates the lower half of the ceiling spring 27. Opposed cylindrical walls 30 for forming groove cams 127 to be described later are bulged and formed at two locations on the opposing peripheral surface of the wall 29. The upper holder 26 is made of a plastic molded product, and includes a cylindrical wall 31 that accommodates the upper half of the ceiling spring 27, a connecting shaft portion 32 provided at the center of the inner surface of the cylindrical wall 31, and a pair protruding from the upper surface of the upper holder 26. Are provided integrally with the anti-rotation projection 33. In a state in which both holders 25 and 26 are assembled, the pair of front and rear opposing cylindrical walls 30 engages with the recess 39 between the cylindrical walls 31 facing left and right, so that both cylindrical walls 30 and 31 are flush with each other in the circumferential direction. Adjacent to each other. A bolt 34 a is insert-fixed to the connecting shaft portion 32.

  With the ceiling spring 27 disposed between the holders 25 and 26, the tubular wall 31 is fitted onto the upper tubular wall 29, and the nut 34b is screwed into the bolt 34a protruding from the bottom wall of the boss body 7, thereby The unit 8 is supported by the boss body 7. Thus, the lower holder 25 and the upper holder 26 that are fastened by the bolt 34a and the nut 34b are integrated so as to be relatively slidable in the vertical direction. The initial tension of the ceiling spring 27 at this time is a value close to zero, and the spring force is exhibited only when the lower holder 25 and the upper holder 26 slide relative to each other. The upper holder 26 and the lower holder 25, and the upper holder 26 and the boss body 7 are connected so as to engage with each other and are held so as not to rotate. Specifically, as shown in FIG. 4, the connecting shaft portion 32 is formed in a drum shape in cross section to prevent the lower holder 25 and the boss body 7 and the connecting shaft portion 32 from rotating relative to each other. A shaft portion having a drum shape in cross section is denoted by reference numeral 32a. The bolt 34 a and the nut 34 b serve as a screw fastening body 34 that fastens the boss body 7 and the upper holder 26.

  As described above, with the spring unit 8 mounted on the upper frame body 1, the upper connecting boss 12 of the upper base body 5 is externally mounted on the spring unit 8, and the cap-shaped female screw is externally mounted on the upper frame body 1. The ceiling pressing body 3 can be integrated with the upper frame body 1 by screwing the body 35 into a screw shaft 36 provided at the lower end of the base body 11. Since the rotation projection 33 in this state engages with the engagement holes 37 and 38 (see FIG. 1) provided in the upper connection boss 12 and the upper removal stopper 17, the upper base body 5 and the upper removal stopper 17 are spring units. No rotation with respect to 8. According to the ceiling pressing body 3, when the upper frame body 1 is pushed up by a lock mechanism, which will be described later, the lower holder 25 moves along with the upper frame body 1 to move the upper frame body 1 upward. The ceiling spring 27 is compressed and deformed to press the entire ceiling pressing body 3 against the ceiling R. Further, since the lower holder 25 and the upper holder 26 slide relative to each other inside the upper base body 5 to absorb the pushing-up operation of the upper frame body 1, dust or the like adheres to the sliding surfaces of both the holders 25 and 26. Thus, the reliability of the operation of the spring unit 8 can be maintained for a long time.

  As shown in FIGS. 6 and 7, the floor-contacting body 4 includes a lower base body 41 attached to the lower frame body 2, and a lower tilting body 42 connected to the lower base body 41 so as to be capable of relative tilting. The floor-contacting body 4 is assembled to a base holder 43 fastened and fixed to the inner surface of the lower end of the lower frame body 2. The lower base body 41 includes a lower base frame 44 and an upper base frame 45 whose peripheral walls are constricted continuously in a curved taper shape, and a rubber cover that covers the curved surfaces of both and the lower surface of the lower base frame 44. 46. The lower base frame 44 and the upper base frame 45 are made of a hollow plastic molded product. A fastening seat 47 is formed in the center of the lower surface of the lower base frame 44, and a lower connecting boss 48 projects from the upper surface of the fastening seat 47. It is. The lower end of the upper base frame 45 is engaged with the inner surface of the upper end of the peripheral wall of the lower base frame 44, and the inner flange 49 protruding from the inner surface near the upper end is engaged with the upper peripheral surface of the lower connecting boss 48. Near the periphery of the lower surface of the cover 46, a double ring-shaped receiving wall 50 for receiving the downward tilting body 42 projects downward.

  The lower tilting body 42 is formed in a disc shape, and a lower connecting recess 53 for supporting the receiving wall 50 is formed on the upper surface thereof, and a lower tilting recess 54 is formed in the center of the lower surface thereof. Antislip bodies 55 that can be elastically deformed are fixed at four locations around the lower surface of the lower tilting body 42. The receiving wall 50 is fitted in the lower connecting recess 53, and the lower stopper 56 attached to the lower tilting recess 54 is screwed into the screw hole 57 on the upper side of the fastening seat 47, so that the lower tilting body 42 is integrated with the lower base body 41. Can be That is, the lower tilting body 42 is sandwiched up and down by the lower base body 41 and the lower removal stopper 56 screwed into the lower base body 41 so that it can tilt with respect to the lower base body 41 but cannot be detached. It is attached.

  In the floor-contacting body 4 in the above-described state, the lower recess flange 58 projecting from the upper part of the lower tilt recess 54 and the lower retaining flange 59 projecting from the periphery of the lower stopper 56 are vertically opposed to each other via the tilt gap E2. (See FIG. 6). Therefore, as shown in FIG. 9, even when the floor F is inclined with respect to the horizontal plane by an angle θ2, the lower tilting body 42 tilts with respect to the lower base body 41 within the range of the tilting clearance E2. Thus, the inclination of the floor F can be absorbed, so that the lower base body 41 can be pressed against the floor F with a vertically upstanding column. Note that the downward tilting body 42 can tilt up to a state indicated by an imaginary line in FIG.

  In order to mount the floor-contacting body 4 to the lower frame body 2, the base holder 43 is fitted into the lower inner surface of the lower frame body 2, and a pair of opposing screws 62 are screwed into the base holder 43 to lower the base holder 43. Fastened to the frame 2. In FIG. 7, the base holder 43 is integrally provided with a lower half side spring holder portion 64 that accommodates a compression coil-shaped floor spring 63, a connecting cylinder portion 65 that fits inside the lower frame body 2, and a cap frame 66. The bolt 68a is insert-fixed from the connection cylinder part 65 to the connection shaft part 67 at the center of the spring holder part 64.

  As shown in FIG. 6, with the base holder 43 fitted and fixed to the lower frame body 2 and the floor spring 63 disposed on the spring holder portion 64, the lower connection boss 48 of the lower base frame 44 is removed from the base holder 43. The floor contact body 4 can be integrated with the lower frame body 2 by fitting and fitting the nut 68 b into the bolt 68 a protruding into the screw hole 57. The bottom stopper 56 attached to the lower tilting body 42 is screwed into the screw hole 57, and the cap 70 externally attached to the lower frame body 2 is press-fitted to the cap frame 66, so that the floor-contacting body 4 is lowered. It can be attached to the frame 2.

  As described above, the base holder 43 and the lower connection boss 48 that are fastened by the bolt 68a and the nut 68b are integrated so as to be relatively slidable in the vertical direction, and the upper frame 1 is assembled to the lower frame 2. In the state, the floor spring 63 is compressed and deformed by about 5 mm and exhibits a slight initial tension. Thereafter, the spring force gradually increases as the base holder 43 and the lower connecting boss 48 slide relative to each other. In order to make it possible for anyone to install the strut-fixed support column securely and easily, and to save the labor required to install the support column, the spring pressure of the floor spring 63 is set smaller than the spring pressure of the ceiling spring 27. In the state in which the upper frame body 1 is pushed up by a lock mechanism described later, the initial push-up operation of the upper frame body 1 can be absorbed by the floor spring 63. Details thereof will be described later. The bolt 68 a and the nut 68 b serve as a screw fastening body 68 that fastens the base holder 43 and the lower connection boss 48.

  The base holder 43 and the lower connection boss 48 are connected so as to engage with each other and are held so as not to rotate. Specifically, as shown in FIG. 8, the engagement piece 43 a provided on the base holder 43 is engaged with an engagement groove 48 a provided on the inner surface of the lower connection boss 48, so that the base holder 43 and the lower connection boss 48 are Prevents relative rotation. The bolt 68a and the nut 68b function as a screw fastening body 68 that fastens the base holder 43 and the lower base body 41. As described above, when the floor spring 63 is arranged between the lower frame body 2 and the lower base body 41, the lower base body 41 is pushed down and urged by the floor spring 63 in a state where the column is installed. When the floor 27 is lifted upward against the urging force of the spring 27, it is possible to reliably prevent the floor contact body 4 from moving away from the floor F.

  The lower stopper 56 is made of a plastic molded product integrally including an operation portion 72 having a finger grip 71 at the center of a recess and a screw portion 73 provided on the upper portion of the operation portion 72. As described above, the lower tilting body 42 can be integrated with the lower base body 41 by screwing the screw portion 73 into the screw hole 57 of the lower base frame 44. A pair of elastic engagement claws 74 are provided on the opposing peripheral surface of the base end of the screw portion 73, and the elastic engagement claws 74 are engaged with the engagement step portion 76 of the retaining ring 75 that externally fits the screw portion 73. As a result, the lower stopper 56 is mounted and held on the lower tilting body 42 so as not to be separated.

  10 to 12 show the locking mechanism. The locking mechanism includes a fulcrum ring 77 that is fixed to the upper portion of the lower frame body 2, a holding ring 78 that is externally fitted to the upper frame body 1 to hold and fix the middle part of the frame body 1, and a holding ring 78. A lock handle 79 supported so as to be swingable up and down, a push-up link 80 for connecting the fulcrum ring 77 and the lock handle 79, a cam structure provided on the opposite surface of the base end of the lock handle 79 and the holding ring 78, and the like. It is configured.

  The fulcrum ring 77 is formed in a round cylindrical shape by joining a pair of left and right halved rings that are plastic-molded. A guide groove 83 is formed in the joint portion on the front side, and the lower end surface of the link guide portion 82 Is formed with a lock recess 84 having a handle lock structure, which will be described later. The cylindrical wall of the fulcrum ring 77 is accommodated in the upper part of the inner surface of the lower frame 2, and only the front part of the ring where the guide groove 83 is formed is exposed to the outer surface from the vertical opening 85 formed on the front surface of the lower frame 2. It is.

  The holding ring 78 is formed in a round cylindrical shape by cutting an aluminum die cast product, and a pair of bracket portions 90 that support the lock handle 79 are integrally formed on the front surface thereof. As shown in FIG. 11, the left and right bracket portions 90 are opposed to each other via a gap. The gap is narrowed by a cam structure so that the cylinder wall is brought into close contact with the upper frame body 1, and the upper frame body is caused by the frictional force therebetween. Hold 1 and hold. Similar to the fulcrum ring 77, the cylindrical wall of the holding ring 78 is accommodated in the upper part of the inner surface of the lower frame 2, and only the bracket portion 90 is exposed from the vertical opening 85 to the outer surface. As described above, when the cylindrical walls of the fulcrum ring 77 and the holding ring 78 are accommodated in the lower frame body 2, members exposed to the outer surface of the column are the lock handle 79, the push-up link 80, the bracket portion 90, and the like. Only in the case, the appearance of the column can be made clear.

  The lock handle 79 includes a plastic molded handle main body 91 and reinforcing metal fittings 92 fixed to the left and right sides of the rocking base end of the handle main body 91. Is connected to the bracket portion 90 by a handle support shaft 93. Further, the other end side of the reinforcing metal fitting 92 and the handle main body 91 are connected to the upper portion of the push-up link 80 by a link shaft 94. Only one push-up link 80 is arranged at the center of the left and right of the lock handle 79, and a fulcrum shaft 95 provided at the lower end thereof is slidably guided and supported by a guide groove 83. That is, the lock handle 79 and the fulcrum ring 77 are connected by one push-up link 80. In this way, when the lock handle 79 and the link guide portion 82 are connected by one push-up link 80, the link structure can be simplified and the cost of the lock mechanism can be reduced. The lock handle 79 can swing up and down between the unlocking posture shown in FIG. 10 and the locking posture shown in FIG.

  The cam structure is composed of a pair of cam pieces 98 bulging and formed on the outer surface of the bracket portion 90 and an operation portion 99 provided at a connecting portion of the handle main body 91, and the flat operation portion 99 is formed on the cam piece 98. By riding up, the facing gap of the bracket portion 90 is narrowed, and the cylindrical wall of the holding ring 78 is brought into close contact with the upper frame 1. A reinforcing metal fitting 92 is provided to restrict excessive elastic deformation of the operating portion 99 during this tightening. The cam piece 98 is formed with an inclined guide surface 98a for smooth climbing of the operation portion 99 (see FIG. 12). In order to make the appearance of the lock handle 79 switched to the lock posture clear, the outer surface of the lock handle 79 is covered with a rubber handle cover 101. Further, a lock portion cover 102 that covers the upper portion of the lock handle 79 and the upper portion of the holding ring 78 that are swung in a locked state is fixed to the upper end of the lower frame body 2. Thus, by covering the upper portion of the holding ring 78 and the outer surface of the lock handle 79 with the lock portion cover 102 and the handle cover 101, the lock handle 79 and the bracket portion 90 are concealed in a state where the column is stretched and fixed. , Can make the appearance of the column clean. A display opening 103 that allows a lock shaft 106 to be described later to enter and exit is formed in the lower portion of the handle cover 101.

  In a state where the lock handle 79 is operated to the unlocking posture shown in FIG. 10, the link shaft 94 is positioned at the upper end of the guide groove 83, and the holding ring 78 is expanded by its own elasticity. Therefore, the upper frame 1 can be freely put in and out of the holding ring 78 and the lower frame 2. In this state, when the lock handle 79 is pivoted downward about the handle support shaft 93 as indicated by an imaginary line in FIG. 10, the push-up link 80 moves downward along with the lock handle 79, and the link shaft 94 is received at the lower end of the guide groove 83. When the lock handle 79 is further pushed down, the operation portion 99 of the handle main body 91 rides on the cam piece 98 via the inclined guide surface 98a, so that the pair of bracket portions 90 approach each other and the ring tube portion 78a is reduced in diameter. Then, the upper frame body 1 is held and fixed. On the other hand, since the link shaft 94 is received by the lower end of the guide groove 83, the push-up link 80 does not move further down and supports the lock handle 79 in a stretched manner. Therefore, the lock handle 79 swings downward about the link shaft 94, and as shown in FIG. 12, the handle support shaft 93 pushes up the holding ring 78 and the upper frame body 1 to the locked position. Switch. The ceiling pressing body 3 comes into close contact with the ceiling R after the upper frame body 1 starts to move upward, and in a state where the lock handle 79 is switched to the locked position, the ceiling spring 27 is elastically deformed and the ceiling pressing body 3 Press the whole against the ceiling R. At this time, the floor spring 63 is also elastically deformed.

  In order to prevent the lock handle 79 switched to the lock posture from being accidentally unlocked, a handle lock structure is provided between the lock handle 79 and the fulcrum ring 77. The handle lock structure includes a lock recess 84 provided in the lower portion of the link guide portion 82 and a lock shaft body 106 attached to the lower portion of the lock handle 79. The lock shaft 106 is guided and supported by the handle body 91 so as to be slidable up and down, and a lock claw 107 that engages with and disengages from the lock recess 105 is provided at the upper end of the lock shaft body 106. In a state where the lock handle 79 is switched to the locked state, the lock claw 107 is pushed from the lower unlocking position to the upper locking position so that the lock pawl 107 is locked into the locking recess 105 as shown in FIG. To lock the lock handle 79 in the unlocking direction. Thus, the lock shaft body 106 can lock and hold the lock handle 79 switched to the locked state with one touch.

  In order to clearly display that the lock shaft body 106 is in an unlocked state and alert the user, as shown in FIG. 10, red display portions 108 are provided on the front and left and right side surfaces of the lock shaft body 106. Is provided. In a state where the lock shaft body 106 is switched to the unlocked position, the lower side of the display unit 108 is exposed outside the display opening 103, so that it is clearly displayed that the lock handle 79 is not held locked. Can be aroused. As a result, it is possible to eliminate the situation where the lock handle 79 is left in a state where the lock handle 79 is not held in a locked state, thereby improving the safety of the strut-fixed type support column. In addition, as shown in FIG. 12, when the lock shaft body 106 is switched to the lock position, the display unit 108 fits inside the outer shape of the handle cover 101, so that the lock handle 79 is properly locked and held. I can know that.

  In order to return the lock handle 79 to the unlockable state by unlocking the lock shaft body 106 switched to the lock position, a cam shaft 109 penetrating the lock shaft body 106 to the left and right as shown in FIG. The reset cam body 110 is fixed to the coaxial 109. Further, a relief groove 111 that slides relative to the cam shaft 109 is provided in the lock shaft body 106. Although not shown, an operation head is provided at the right end of the camshaft 109. By rotating the operation head with a hexagon stick wrench, the lock shaft body 106 is moved by the rotating string-shaped cam body 110. The lock handle 79 can be pushed out.

  As shown in FIG. 2, in a state in which a support column is installed between the floor F and the ceiling R, the ceiling spring 27 and the floor spring 63 are elastically deformed to press the ceiling pressing body 3 against the ceiling R, and the floor contact body. 4 is pressed against the floor F. In many cases, since the strength of the floor F is sufficiently large, no problem occurs even if the pressing force of the floor-contacting body 4 is excessive. However, when the pressing force of the ceiling pressing body 3 is excessive, the ceiling structural material may not be able to withstand and may be damaged. Moreover, when the pressing force of the ceiling pressing body 3 is insufficient, there is a risk that the support column will collapse due to an external force. In order to solve such a problem, a pressing force display structure for displaying appropriateness of the pressing force of the ceiling pressing body 3 is provided inside the upper base body 5.

  As shown in FIGS. 3 and 13, the pressing force display structure has a display disk 116 that is rotatably supported inside the base body 11 and a top connection boss 12 that is rotatably supported. A disk operation body 117 that rotates is provided, and a cam mechanism that is provided between the disk operation body 117 and the upper holder 26 and converts a relative sliding operation of the upper holder 26 and the lower holder 25 into a rotation operation. The display disk 116 is made of an umbrella-shaped plastic molded product, and a caution display (load display) 118 colored in red and an uncolored safety display (load display) 119 are provided on the inclined peripheral surface on the lower surface side. (See FIG. 15) A passive gear 120 is integrally formed at the center of the upper surface. Reference numeral 121 denotes a pin that pivotally supports the display disk 116.

  The disk operation body 117 is provided at two locations: a cylindrical wall 123 that fits over the upper connecting boss 12, a fan-shaped operation gear 124 that is connected to one peripheral edge of the cylindrical wall 123, and an opposing surface of the cylindrical wall 123. It consists of a plastic molded product integrally provided with a passive cam 125. A part of the cylindrical wall of the upper connecting boss 12 is notched, and the groove cam 127 provided on the opposing cylindrical wall 30 of the upper holder 26 with the passive cam 125 facing the inside of the upper connecting boss 12 from the notched portion 126. Is engaged. Thus, in order to engage the passive cam 125 with the groove cam 127, the opposing cylindrical wall 30 faces the concave portion 39 between the pair of cylindrical walls 31 (see FIG. 3). The cam mechanism includes a pair of groove cams 127 provided on the opposed cylindrical wall 30 of the upper holder 26 and a pair of passive cams 125 provided on the cylindrical wall 123. In order to prevent the passive cam 125 from rattling in the circumferential direction with respect to the groove cam 127, the disk operating body 117 is a kick spring 129 disposed on the upper surface side of the upper holder 26, and rotates counterclockwise in FIG. Energized. In order to make the caution display 118 and the safety display 119 visible, a display window 128 is opened on the downward inclined surface of the peripheral wall of the base body 11 facing the floor F, and the opening width in the circumferential direction is the safety display 119. It is set somewhat larger than the display width in the circumferential direction.

  As shown in FIG. 16, the groove cam 127 includes a lower concavity-shaped guide recessed portion 131 for facilitating assembly, a vertical standby groove 132 continuous with the recessed portion 131, and a reverse hex shape continuous with the groove 132. The operation groove 133 is provided. In FIG. 16, the display disk 116 and the disk operating body 117 are shown looking up from the bottom surface side. In a no-load state where the ceiling pressing body 3 faces the ceiling R with a small gap in between, the passive cam 125 is engaged with the standby groove 132 as shown in FIG. A caution display 118 faces the window 128. After the ceiling pressing body 3 is in close contact with the ceiling R, the lock handle 79 is switched to the locked posture, whereby the ceiling spring 27 is elastically deformed and the entire ceiling pressing body 3 is pressed against the ceiling R. In this state, the lower holder 25 is moved upward by the amount that the upper frame 1 is pushed up, so that the passive cam 125 slides relative to the operation groove 133 and rotates in the direction of the arrow shown in FIG. Operated. Further, the operation gear 124 rotates along with the rotation of the passive cam 125, and the display disk 116 is rotated through the passive gear 120, so the safety display 119 faces the display window 128. In this state, the ceiling pressing body 3 is pressed against the ceiling R with an appropriate pressing force without excess or deficiency.

  After the safety display 119 faces the display window 128, when the lock handle 79 is switched to the locked position, the upper frame body 1 is pushed up excessively, and the lower holder 25 is moved upward by that much. To do. As a result, as shown in FIG. 16C, the passive cam 125 is excessively rotated until it reaches the lower end of the operation groove 133, and the caution display 118 appears again in the display window 128. This state means that the ceiling pressing body 3 is pressed against the ceiling R with an excessive pressing force. Therefore, the lock handle 79 is unlocked, and the length of the upper frame body 1 is adjusted to be small. It is necessary to re-install the support. In a state where the lock handle 79 is switched to the locked posture, as shown in FIG. 15, when the caution display 118 and the safety display 119 appear on the display window 128, the pressing force of the ceiling pressing body 3 against the ceiling R is insufficient. In this case, it is necessary to unlock the lock handle 79, adjust the extraction length of the upper frame 1 to a larger value, and re-install the column. As described above, the display disc 116 is colored in red when the ceiling pressing body 3 is in a no-load or low-load state and when an excessive load is applied to the ceiling pressing body 3. 118 is displayed in the display window 128, but this is not necessary. For example, the safety display 119 colored in blue or green may be displayed on the display window 128 when the ceiling pressing body 3 is pressed against the ceiling R with an appropriate pressing force without excess or deficiency.

  According to the pressing force display structure configured as described above, the disk operating body that has received the rotational motion converted by the cam mechanism in a state where the upper and lower holders 25 and 26 slide relative to each other and the ceiling spring 27 is compressed and deformed. 117 can rotate the display disk 116 to switch the display positions of the caution display 118 and the safety display 119 provided around the display disk 116. Further, since the display window 128 of both displays 118 and 119 is opened on the downward inclined surface of the peripheral wall of the base body 11 facing the floor F, the caution display 118 or the safety display 119 can be clearly seen by looking up at the base body 11. It is possible to accurately determine whether or not the safety display 119 has been switched to an appropriate state. Therefore, it is possible to eliminate the variation in the pressing load of the ceiling pressing body 3 by the operator, and accordingly, it is possible to well prevent the pressing load from exceeding an appropriate value. Further, the load display 118/119 is switched by rotating the display disk 116 by the cam mechanism and the disk operating body 117, which operates according to the relative sliding amount of the upper and lower holders 25/26, so that the load display 118/119 is switched. There is also an advantage that the displacement can be accurately manipulated according to the amount of compressive deformation of the ceiling spring 27. In the state where the safety display 119 is switched to an appropriate state, the pressing load of the ceiling pressing body 3 is 26 to 30 kgf on average, but the average value (30 to 30) of the pressing load of the ceiling receiving member in the conventional support column. Compared to 40 kgf), the pressing load of the ceiling pressing body 3 can be reduced to reduce the load on the ceiling R.

  A brake structure is provided in order to prevent the upper frame body 1 from dropping to the lower frame body 2 due to its own weight in a free state in which the lock handle 79 is unlocked. As shown in FIG. 2, the brake structure includes an urging ring 136 attached to the lower half of the upper frame 1 and a braking structure 137 provided at the lower end (lower part) of the upper frame 1. As shown in FIG. 17, the urging ring 136 is formed of a ring body having a C-shaped cross section, and an engagement pin that protrudes from the center of the inner surface of the ring body with the inner surface of the ring closely contacting the peripheral surface of the upper frame body 1. By engaging 138 with the cylinder wall of the upper frame body 1, the upper frame body 1 is integrated. The urging ring 136 in this state urges the middle part of the upper frame 1 to move in the direction of the arrow by its own elastic force, and therefore the upper frame 1 generates a tilting moment with the holding ring 78 as a fulcrum. You will always receive it. In FIG. 17, a vertical cross-sectional view is shown on the left side, and a cross-sectional view of the urging ring 136 is shown on the right side of FIG. 17, and a cross-sectional view of the braking structure 137 is a g-g cross-section. The figure is displayed.

  The brake structure 137 includes an upper connecting frame 140 that is mounted on the inner surface of the lower end of the upper frame 1 and fixed by screws 139, and a holding frame portion 141 that has a U-shaped cross section continuous to the lower portion of the connecting frame 140. A brake spring 142 and a push plug 143 accommodated in the frame portion 141 and a brake blade 144 pushed and biased by the push plug 143 are provided. On the outer surface of the holding frame portion 141, leg pieces 145 that come into contact with the inner surface of the lower frame body 2 project. The brake blade 144 is integrally provided with a partial arc-shaped brake shoe 146 that is in close contact with the inner surface of the lower frame body 2 and a passive piece 147 that is in contact with the push plug 143 and pushed out by the brake spring 142. Inside the lower frame 2, the brake shoe 146 is pushed out by the brake spring 142 and pressed against the inner surface of the lower frame 2, and the leg piece 145 and the lower frame 2, and the brake shoe 146 and the lower frame 2. The upper frame body 1 is prevented from falling by its own weight due to the frictional resistance between the two. The pushing plug 143 in this state is pushed out in the same direction as the urging direction of the previous urging ring 136, and the brake blade 144 is brought into close contact with the lower frame body 2, so that the tilting moment by the urging ring 136 is It is offset by the urging force of the brake spring 142.

  The above frictional resistance also acts when the upper frame body 1 is pulled out from the lower frame body 2, but in order to reduce the frictional resistance when the upper frame body 1 is pulled out, the push plug 143 and the passive piece 147 are The brake blade 144 is configured to slide up and down by a certain amount with respect to the push-out plug 143. In the state where the upper frame body 1 moves downward, the cam surface 148 is pushed into the holding frame portion 141 against the urging force of the brake spring 142 when the upper frame body 1 moves downward, and when the upper frame body 1 moves upward, The push plug 143 is inclined in the direction in which the push plug 143 is pushed out from the holding frame portion 141.

  According to the above brake structure, when the upper frame body 1 moves downward, the brake blade 144 slides upward with respect to the push-out plug 143, and the contact position on the cam surface 148 is the same as the brake blade 144 slides. Moves upward. Further, as the contact position on the cam surface 148 shifts upward, the push plug 143 is pushed into the holding frame portion 141, and the brake spring 142 is compressed and deformed more than before. As a result, the spring pressure of the brake spring 142 increases, and the brake blade 144 is strongly pressed against the lower frame 2 by that amount. On the contrary, when the upper frame body 1 moves upward, the brake blade 144 slides downward with respect to the push plug 143, and the contact position on the cam surface 148 is shifted downward by the amount that the brake blade 144 slides. Move. FIG. 17 shows a state where the passive piece 147 is in contact with the lower cam surface 148 of the push plug 143. As described above, as the contact position on the cam surface 148 shifts downward, the push plug 143 is pushed out from the holding frame portion 141, and the brake spring 142 is expanded and deformed more than before. As a result, the spring pressure of the brake spring 142 decreases, and the pressing force against the lower frame body 2 of the brake blade 144 decreases accordingly, and the frictional resistance when the upper frame body 1 is pulled out can be reduced.

  As described above, when the braking structure 137 is provided at the lower portion of the upper frame body 1, the upper frame body 1 that moves downward is braked by the frictional resistance generated between the brake shoe 146 and the leg pieces 145 and the lower frame body 2. be able to. Accordingly, at the same time that the lock handle 79 is unlocked, the upper frame 1 is prevented from dropping into the lower frame 2 by its own weight, and the upper frame 1 is slowly and safely lowered. Can be moved. Further, the frictional resistance when the upper frame body 1 is pulled out from the lower frame body 2 can be reduced, and the work of installing the support can be easily and lightly performed. Furthermore, since the upper frame 1 inserted into the lower frame 2 is supported by the three members of the holding ring 78, the urging ring 136, and the brake shoe 146, the upper frame 1 can be prevented from wobbling. The upper frame 1 can be smoothly inserted into and removed from the lower frame 2.

  A drainage structure is provided inside the floor-contacting body 4 so that the tension-fixed support column can be installed in a place where rain falls, such as a veranda or an entrance porch. Specifically, as shown in FIG. 6, drain holes 161 and 162 are respectively formed in the connecting cylindrical portion 65 of the base holder 43, the inner bottom of the lower connecting boss 48, and the inner bottom of the screw portion 73 of the lower extraction stopper 56. -163 is formed in a vertically penetrating manner so that rainwater entering the lower frame 2 can be drained to the floor F. By forming the drain holes 161, 162, and 163 in this way, it is possible to clean up the rainwater that accumulates in the lower frame body 2 and the floor contact body 4, so that the column can be used as a place where rain falls, such as a veranda or entrance porch. This makes it possible to expand the applicable area of the strut-fixed support column.

  As shown in FIG. 2, the strut-fixed column can be used with the upper frame 1 and the lower frame 2 being stretched and fixed between the floor F and the ceiling R as shown in FIG. Can be used with the handrail fixed to the lower frame 2. In addition, as shown in FIG. 21, a plurality of support columns are stretched and fixed along a wall surface such as a corridor, and the handrail bar 151 is supported and used by a connection bracket 150 fixed to the lower frame body 2 of each support column. it can.

  According to the strut-fixed support column configured as described above, it is possible to install the support column in a state in which the upper tilting body 6 tilts according to the tilt of the ceiling R or the floor F and is firmly in contact with the ceiling R. Therefore, even if a lateral load acts on the support column, it is possible to eliminate the fact that the ceiling pressing body 3 slides sideways and the support column collapses, thereby improving the safety of the tension-fixed support column. In addition, even if it is not possible to clearly determine whether one of the floor F and the ceiling R is slightly inclined, the column can be installed in a stable state, so compared to this type of conventional column, It is possible to secure the safety by enlarging the applicable places of the strut fixed type support.

  When installing the column, with the lock handle 79 switched to the unlocked posture, the upper frame body 1 is pulled out from the lower frame body 2 and the upper tilting body 6 of the ceiling pressing body 3 is applied to the ceiling R and the entire column. Is temporarily installed. In this state, the lock handle 79 is swung to the lock posture side, and as shown by an imaginary line in FIG. 10, the push-up link 80 is moved down along with the lock handle 79, and the fulcrum shaft 95 is moved to the guide groove 83. Receive at the lower end of At this time, the lock preparation operation for pushing up the upper frame body 1 and pressing the ceiling pressing body 3 against the ceiling R is completed. When the lock handle 79 is further pushed down, the operation portion 99 of the handle main body 91 rides on the cam piece 98 via the inclined guide surface 98a, so that the pair of bracket portions 90 approach each other and the ring tube portion 78a is reduced in diameter. Then, the upper frame body 1 is held and fixed. On the other hand, since the push-up link 80 is pushed up with the fulcrum shaft 95 as a fulcrum, the holding ring 78 and the upper frame 1 are accompanied by the push-up link 80 and pushed up.

  As described above, after the lock preparation operation is completed and the ring cylinder portion 78a holds and fixes the upper frame body 1, when the lock handle 79 is further pushed down, first, the floor spring 63 having a small spring pressure is pushed. Then, the ceiling spring 27 is compressed and deformed. Eventually, the ceiling spring 27 is compressed and deformed by about 15 mm to press the ceiling pressing body 3 against the ceiling R without excess or deficiency. In other words, after the completion of the lock preparation operation, the floor spring 63 is depressed by about 5 mm in conjunction with the pressing operation of the lock handle 79, thereby delaying the timing at which the ceiling spring 27 starts to be compressed and deformed. It is prevented from being excessively pressed against the ceiling R. This is because the handle is swung downward with the ceiling support member facing the ceiling through a gap of about 1 cm in the conventional support column, and the timing at which the compression coil spring begins to elastically deform is delayed. This is to prevent the receiving member from being excessively pressed against the ceiling and to obtain the same effect.

  As described above, according to the strut-fixed support column in which the floor contact body 4 is provided with the floor spring 63, the lock handle 79 is brought into the locked posture with the upper tilting member 6 applied to the ceiling R and the entire support column temporarily installed. The ceiling pressing body 3 can be pressed against the ceiling R without excess or deficiency simply by swinging. Accordingly, anyone can reliably and easily install the support column, and therefore, it is possible to provide a strut-fixed support column that is excellent in ease of use by significantly reducing the labor required for installation of the support column. In addition, in the state where the column is installed, the column can be installed in a stable state by tilting the upper tilting body 6 according to the inclination of the ceiling R or the floor F and firmly contacting the ceiling R. Furthermore, since the upper recessed flange 20 and the upper retaining flange 21 are vertically opposed to each other via the tilt gap E1, it is not necessary to consider the direction of the tilt of the ceiling R or the floor F, and the upper tilting body 6 is attached to the ceiling R. Alternatively, it can be tilted in all directions following the inclination of the floor F, and the column can be installed more easily by that amount.

  Since the lower tilting body 42 is also provided on the side of the floor-contacting body 4, the tilting of the ceiling R or the floor F can be absorbed by the upper tilting body 6 and the lower tilting body 42 in cooperation. Therefore, the inclination with respect to the upper base body 5 and the lower base body 41 of the upper tilting body 6 and the lower tilting body 42 is reduced, and the upper frame body 1 and the lower frame body 2 are in a more vertical posture and in a stable state. Can be stretched and fixed. Further, even when the degree of inclination of the ceiling R or the floor F is large, the upper tilting body 6 and the lower tilting body 42 cooperate to absorb the previous tilt. The applicable place of the support can be further expanded.

  Since the ceiling spring 27 is disposed between the upper frame body 1 and the upper base body 5 and the floor spring 63 is disposed between the lower frame body 2 and the lower base body 41, the ceiling spring 27 and the floor spring 63 are respectively The ceiling pressing body 3 and the floor contact body 4 can be pressed against the ceiling R or the floor F by being elastically deformed. Therefore, when an external force in the vertical direction acts on the upper frame body 1 or the lower frame body 2, the ceiling pressing body 3 and the floor contact body 4 are reliably prevented from moving away from the ceiling R or the floor F. Can improve safety.

(Another Embodiment) FIG. 18 shows another embodiment of the biasing ring 136. In this case, a biasing ring 136 is constituted by a partial arc-shaped ring body 136a and a ring shaft 136b projecting from the inner surface side of the ring body 136a, and a pair of outer projections are formed between the base end and the projecting end of the ring shaft 136b. A curved spring arm 136c is provided. With the ring shaft 136b inserted into the mounting hole 135 provided in the upper frame 1, the upper frame 1 and the urging ring 136 are assembled into the lower frame 2, so that the outer surface of the ring 136a is lowered. The ring arm 136b is in close contact with the inner surface of the frame body 2, and the protruding end of the ring shaft 136b is received by the inner surface of the upper frame body 1, and the spring arm 136c is elastically deformed into an outward bulge shape. The biasing ring 136 in this state moves and biases the upper frame 1 in the direction of the arrow by the deformation stress of the spring arm 136c. Since others are the same as the previous embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted. The same applies to the following embodiments.

  As described above, according to the urging ring 136 configured by the ring body 136a, the ring shaft 136b, and the pair of spring arms 136c, the upper frame 1 is moved by the deformation stress of the spring arms 136c elastically deformed in an outward bulge shape. Can move and energize in the direction of the arrow. Accordingly, when the tilting stroke of the upper frame body 1 is larger than the biasing ring 136 of the previous embodiment in which the upper frame body 1 is moved and biased in the direction of the arrow only by the elastic force of the ring body having a C-shaped cross section. But it can exert its power without any trouble. Further, after the biasing ring 136 is assembled to the upper frame 1, the spring arm 136 c is caught in the mounting hole 135, so that even if the upper frame 1 is separated from the lower frame 2, the biasing ring 136 does not come off the upper frame 1.

(Another Embodiment) FIGS. 19 and 20 show another embodiment of the braking structure 137. FIG. There, a base portion 153 that engages and attaches the push plug 143 to the holding frame portion 141, a plug body 154 that presses the brake blade 144, and a resin spring (brake spring) that is formed integrally with both the members 153 and 154. 142). In addition, a compression coil-type biasing spring 158 is arranged between the base portion 153 and the inner back wall of the holding frame portion 141 in order to reliably push the plug body 154 in cooperation with the resin spring 142. On the upper and lower sides of the base portion 153, elastic arms 155 that are press-fitted and engaged with the inner back wall of the holding frame portion 141 are provided. The brake blade 144 is connected to the push plug 143 so as to be vertically slidable, and the push plug 143 and the passive piece 147 of the brake blade 144 are in contact with each other via an inclined cam surface 148. Specifically, a guide wall 156 having a T-shaped cross section is provided at the projecting end of the plug body 154, and a slide frame 157 having a C-shaped cross section that is externally fitted to the guide wall 155 is formed integrally with the passive piece 147 of the brake blade 144.

  As described above, when the brake spring is formed by the resin spring 142 integrated with the push plug 143, the number of parts can be reduced, the cost of the braking structure 137 can be reduced, and the trouble of parts management can be saved. Further, since the push plug 143 and the brake blade 144 are slidably connected to each other through a guide wall 156 having a T-shaped section and a slide frame 157 having a C-shaped section, the push plug 143 and the brake blade 144 are contacted only by the cam surface 148. Compared to the braking structure 137 of the example, the sliding operation of the brake blade 144 when the upper frame body 1 slides up and down can be performed positively.

  The upper tilting body 6 and the lower tilting body 42 described in the above embodiment are preferably formed in a disk shape in that they can tilt in all directions, but if necessary, they are formed in a flat plate shape that is long in the front-rear or left-right direction. Alternatively, it may be formed in a non-disc shape having three or more contact arms. The receiving wall 50 does not need to be formed in a ring shape, and can be constituted by a group of protrusions arranged intermittently at regular intervals. The display disk 116 does not need to be formed in an umbrella shape, and may be formed in a thin disk shape. In that case, a load display may be provided on the circumferential surface or the lower surface of the disk. As the ceiling spring 27 and the floor spring 63, a rubber molded product or an air damper can be applied instead of the compression coil spring. The cam surface 148 may be formed with a curved inclined surface in addition to being formed with a flat inclined surface.

DESCRIPTION OF SYMBOLS 1 Upper frame body 2 Lower frame body 3 Ceiling press body 4 Floor contact body 5 Upper base body 6 Upper inclined body 7 Boss body 8 Spring unit 11 Base main body 12 Upper connection boss | hub 17 Upper spring stop 27 Ceiling spring 41 Lower base body 42 Below Inclined body 43 Base holder 48 Lower connecting boss 56 Lower stopper 63 Floor spring 136 Biasing ring 137 Brake structure 141 Holding frame 142 Brake spring (resin spring)
143 Extrusion plug 144 Brake blade 148 Cam surface

Claims (9)

An upper frame (1) provided with a ceiling pressing body (3) contacting the ceiling (R), and a lower frame (2) provided with a floor contacting body (4) contacting the floor (F); A strut-fixed support column provided with a lock mechanism that locks and holds the upper frame (1) pulled out from the lower frame (2) so as not to move up and down,
The ceiling pressing body (3) includes an upper base body (5) attached to the upper frame body (1), and an upper tilting body (6) connected to the upper base body (5) so as to be relatively tiltable. And
The upper tilting body (6) is sandwiched up and down by the upper base body (5) and the upper stopper (17) fastened and fixed to the upper part of the upper base body (5). Can be tilted, but cannot be removed
The upper recess flange (20) projecting from the upper tilting body (6) and the upper retaining flange (21) projecting to the periphery of the upper retaining tool (17) are vertically opposed to each other via the tilting gap (E1). ,
In a state where the support column is installed between the floor (F) and the ceiling (R), the upper tilting body (6) tilts within the tilt gap (E1), and the tilt of the ceiling (R) or the floor (F). Strut-fixed support column that absorbs water. Between the boss body (7) fastened and fixed to the upper frame body (1) and the upper base body (5), a spring unit (8) that absorbs the pushing-up operation of the upper frame body (1) is mounted.
The spring unit (8) is interposed between the lower holder (25) received by the boss body (7), the upper holder (26) received by the upper base body (5), and both holders (25, 26). A ceiling spring (27) to be arranged,
The boss body (7) and the upper holder (26) are fastened by a screw fastening body (34), and the lower holder (25) and the upper holder (26) are integrated so as to be relatively slidable. Fixed support column. The floor contact body (4) includes a lower base body (41) attached to the lower frame body (2), and a lower tilt body (42) connected to the lower base body (41) so as to be capable of relative tilting. And
The lower tilting body (42) can be tilted with respect to the lower base body (41) by being sandwiched vertically by the lower base body (41) and a lower stopper (56) screwed into the lower base body (41). However, the removal is not possible,
The lower recessed flange (58) projecting from the lower tilting body (42) and the lower retaining flange (59) projecting from the peripheral edge of the lower retaining tool (56) are opposed vertically via the tilting gap (E2). ,
In a state where the column is installed between the floor (F) and the ceiling (R), the upper tilting body (6) tilts the tilt of the ceiling (R) or the floor (F) within the tilt gap (E1). The strut-fixed support column according to claim 1 or 2, wherein the lower tilting body (42) tilting within the tilt gap (E2) absorbs in cooperation. A base holder (43) is fastened and fixed to the lower end of the lower frame (2).
A lower connection boss (48) provided on the inner surface of the lower base body (41) is externally fitted to the base holder (43), and the lower connection boss (48) and the base holder (43) are screw fastening bodies (68). It is connected so that relative sliding is possible.
The strut-fixed support column according to claim 3, wherein a floor spring (63) is disposed between the lower connecting boss (48) and the base holder (43). The spring pressure of the floor spring (63) is set smaller than the spring pressure of the ceiling spring (27),
The tension according to any one of claims 1 to 4, wherein an initial push-up operation of the upper frame (1) is absorbed by the floor spring (63) when the upper frame (1) is pushed up by the lock mechanism. Fixed support column. The upper base body (11) is provided with a pressing force display structure for displaying appropriateness of the pressing force of the ceiling pressing body (3),
The pressing force display structure includes a display disk (116) rotatably supported inside the base body (11), a disk operating body (117) for rotating the display disk (116), and a disk operating body. (117) is provided between the upper holder (26) and includes a cam mechanism for converting the relative sliding movement of the upper holder (26) and the lower holder (25) into a rotational movement.
In a state in which the lower holder (25) and the upper holder (26) slide relative to each other, the disk operating body (117) that has received the rotation operation converted by the cam mechanism rotates the display disk (116) to display The display position of the load display (118/119) provided around the disk (116) is switched,
The display window (128) for visually recognizing the load display (118, 119) is opened in the peripheral surface of the base body (11) directed to the floor (F). Strut fixed type support. A brake structure (137) for preventing the upper frame (1) in a free state from dropping due to its own weight is provided at the lower part of the upper frame (1).
The braking structure (137) includes a connecting frame (140) and a holding frame (141) fixed to the lower part of the upper frame (1), an extrusion plug (143) accommodated in the frame (141), A brake spring (142) for pushing out the push plug (143), and a brake blade (144) pushed by the push plug (143).
The brake blade (144) includes a brake shoe (146) that is in close contact with the inner surface of the lower frame (2), and a passive piece (147) that is pushed out by the push-out plug (143).
7. The tension fixing according to claim 1, wherein the brake shoe (146) is pushed out by a brake spring (142) and a push-out plug (143) and pressed against the inner surface of the lower frame (2). Mold prop. The brake blade (144) is connected to the push plug (143) so as to be vertically slidable,
The push plug (143) and the passive piece (147) are in contact with each other via an inclined cam surface (148);
When the upper frame body (1) moves downward, the cam surface (148) is pushed into the holding frame portion (141) against the urging force of the brake spring (142). The strut-fixed support column according to claim 7, wherein in a state in which the frame (1) moves upward, the push plug (143) is inclined in a direction to be pushed out from the holding frame portion (141).   The lower frame body (2) is connected to each of the connecting cylindrical portion (65) of the base holder (43), the inner bottom of the lower connecting boss (48), and the inner bottom of the screw portion (73) of the lower stopper (56). The drainage hole (161, 162, 163) for draining rainwater entering the interior of the floor to the floor (F) side is formed in a vertically penetrating manner. Prop.

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