JP6222870B1 - Strut fixed type support - Google Patents

Abstract

The present invention provides a strut-fixed support column that eliminates exposure of a member that tends to give a harsh or complicated impression with a sword to the outside of the support column and makes the appearance of the support column have a gentle impression. An upper frame body having a ceiling pressing body, a lower frame body having a floor contact body, and a lock mechanism for holding the upper frame body so as not to move up and down are provided. The lock mechanism 5 includes a fulcrum ring 7 that is fixed to the lower frame 2, a holding ring 8 that holds and fixes the upper frame 1, a lock handle 9, a push-up link 10, and a cam structure. . The ring cylindrical portion 7c of the fulcrum ring 7 and the cylindrical wall 8a of the holding ring 8 are accommodated inside the lower frame 2, and the link guide portion 13 of the fulcrum ring 7 and the bracket portion 20 of the holding ring 8 are It exposes to the outer surface from the vertical opening 16 of the frame 2. It is possible to eliminate the exposure of the ring cylinder portion 7c and the cylinder wall 8a, which are likely to give a harsh or complicated impression with a sword, to the outside of the column, and the appearance of the column can be made gentle. [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.

  The proximal end of the handle is pivotally connected to the fastening ring and can swing between a horizontal standby position and a vertical operating position. The lower end of the link is connected to the guide groove of the fixing ring, and the upper end of the link is connected to the middle part of the handle via a fixed shaft. In addition, a cam block is provided at the base end of the handle, and a cam structure for holding and fixing a small-diameter pipe is provided on an opposing surface of the cam block and the fastening ring. A compression coil spring is arranged between the ceiling receiving member and the large-diameter pipe, and when the ceiling receiving member is pressed against the ceiling, the previous spring is compressed and deformed, and the ceiling receiving member is pushed up. This prevents excessive pressing load from acting on the ceiling.

  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 lowering the handle, the lower end of the link is received by the lower end of the guide groove, so that the handle after that approaches the fixing ring while swinging around the fixed shaft at the upper part of the link. The ceiling receiving member is brought into close contact with the ceiling by pushing up the pipe and the fastening ring, and the column is fixed between the floor and the ceiling wall.

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, in the state where the column is installed, the whole of the fixing ring fixed to the upper end of the large-diameter pipe, the fastening ring that clamps and fixes the middle part of the small-diameter pipe, or the handle and other locking devices is exposed to the outer surface of the column. Inevitable. Therefore, although it can be clearly seen that the handle is switched to the locked state, the appearance of the support column is hard and is easy to give a complicated impression, and the impression that is rich in the kindness desired for care products is demonstrated. It was difficult. In addition, metal parts such as the fixing ring, fastening ring, and handle are exposed on the outer surface of the support column, so there is a risk of injury if they collide with metal parts by mistake. There was a problem.

  Further, in the conventional tension-fixed support column, in a state where the support column is stretched and fixed, the screw shaft end of the stopper screw screwed into the handle is screwed into the stopper hole of the link, so that the handle can be locked and cannot be unlocked. However, since the screw size of the stopper screw is small, the attachment / detachment thereof is complicated. In addition, to hold the handle locked, it is necessary to screw the stopper screw to the end, but the amount of screwing may be insufficient and the locked state may not be maintained, or the stopper screw may remain unlocked. In some cases, there was room for improvement in ensuring safety.

The object of the present invention is to eliminate the exposure of the fixing ring and fastening ring, which tend to give a harsh or complicated impression with a sword, to the outside of the column, and to make the column appearance have a gentle impression, An object of the present invention is to provide a strut-fixed support column that can improve the safety by eliminating the exposure of manufactured parts.
The object of the present invention is to improve the handle lock structure for the lock handle so that the locked lock handle can be locked and held with a single touch. Therefore, the lock handle can be held more securely and easily than the conventional support. Going to provide a strut-fixed strut that can improve safety.

  As shown in FIG. 2, the strut-fixed support column according to the present invention includes an upper frame body 1 provided with a ceiling pressing body 3 that comes into contact with the ceiling R, and a floor contact body 4 that comes into contact with the floor F. A lock mechanism 5 provided between the lower frame body 2 and the upper portion of the lower frame body 2 and the middle portion of the upper frame body 1 to lock and hold the upper frame body 1 pulled out from the lower frame body 2 so that it cannot move up and down. It has. As shown in FIG. 1, the lock mechanism 5 includes a fulcrum ring 7 fixed to the upper portion of the lower frame body 2, and a holding mechanism that holds the middle part of the frame body 1 by being externally fitted to the upper frame body 1. A ring 8, a lock handle 9 that is supported by the holding ring 8 so as to be swingable up and down, and a push-up link 10 that connects the fulcrum ring 7 and the lock handle 9 are provided. The ring cylindrical portion 7c of the fulcrum ring 7 with the link guide portion 13 provided on the fulcrum ring 7 and the bracket portion 20 provided on the holding ring 8 exposed from the vertical opening 16 opened in the lower frame 2 to the outer surface. The cylindrical wall 8a of the holding ring 8 is housed inside the lower frame 2.

  A lock part cover 32 that covers the upper part of the lock handle 9 and the upper part of the holding ring 8 that are swung in a locked state is fixed to the upper end of the lower frame 2. The outer surface of the lock handle 9 is covered with a handle cover 31. The lock part cover 32 and the handle cover 31 are each formed of an impact absorbing material.

  The lock handle 9 and the link guide portion 13 of the fulcrum ring 7 are connected by a single push-up link 10 arranged at the center of the lock handle 9 on the left and right.

  The handle body 21 and the fulcrum ring 7 of the lock handle 9 are formed of a plastic molded product.

  The fulcrum ring 7 is formed in a cylindrical shape by joining a pair of left and right half ring bodies 7a and 7b which are plastic molded. As shown in FIGS. 4 and 5, the guide base 12 and the link guide portion 13 are integrally formed at the joint portion on the front side, and the fulcrum shaft 25 fixed to the push-up link 10 is provided on the opposing surface of the link guide portion 13. A guide groove 14 for sliding guidance is formed in a non-through groove shape. The elastic engagement claw 17 provided at the lower end of the half ring body 7a engages with the engagement hole 18 provided in the lower frame body 2, and the fulcrum ring 7 is fixed to the lower frame body 2 so as not to fall off. It is.

  A handle lock structure is provided between the lock handle 9 and the fulcrum ring 7 to prevent the locked lock handle 9 from being operated in the unlocking direction. The handle lock structure includes a lock recess 15 provided at a lower portion of the link guide portion 13 and a lock shaft body 36 that is guided and supported by the lock handle 9 so as to be reciprocally slidable. A lock claw 37 is provided to engage and disengage. When the lock handle 9 is switched to the locked state, the lock claw 37 is engaged with the lock recess 15 by unlocking the lock handle 9 by sliding the lock shaft 36 from the unlock position to the lock position. Hold the lock inoperable.

  A display unit 40 is provided at the lower end of the lock shaft body 36 to display that the lock shaft body 36 is in the unlocked position (see FIG. 1). A display opening 33 that allows the display unit 40 to enter and exit is formed below the handle cover 31. In a state where the lock handle 9 is locked and the lock shaft body 36 is located at the unlock position, the display unit 40 projects from the display opening 33. In a state where the lock handle 9 is locked and the lock shaft 36 is displaced to the lock position, the display unit 40 is accommodated in the outer shape of the handle cover 31.

  A reset mechanism is provided in the lock handle 9 for resetting the lock shaft body 36 that has been displaced to the lock position to the unlock position. The reset mechanism is provided on the lock shaft body 36, a cam shaft 42 that is rotatably supported by the lock handle 9 and penetrates the lock shaft body 36 left and right, a reset cam body 43 fixed to the cam shaft 42, and the lock shaft body 36. A passive portion 44 that is reset to the unlocking position by the cam body 43 and an operation head 42 a provided on the cam shaft 42 so as to face the outer surface of the lock handle 9 are provided. A relief groove 46 that slides relative to the cam shaft 42 is formed in the lock shaft body 36. In a state where the lock shaft body 36 is displaced to the lock position, by rotating the cam shaft 42 from the outer surface of the handle cover 31, the passive portion 44 of the lock shaft body 36 is pushed out by the cam body 43 to lock the lock shaft body 36. The shaft body 36 can be reset to the unlock position outside the handle cover 31.

  In the present invention, among the components constituting the lock mechanism 5, the ring cylinder portion 7c of the fulcrum ring 7 and the cylinder wall 8a of the holding ring 8 which are easily conspicuous are accommodated and concealed inside the lower frame body 2, The main parts of the rings 7 and 8 were prevented from being exposed outside the column. Further, the link guide portion 13 of the fulcrum ring 7 and the bracket portion 20 of the holding ring 8 are exposed from the vertical opening 16 opened in the lower frame body 2 so that the lock handle 9 and the push-up link 10 can be switched without trouble. I was able to do it. According to such a strut-fixed support column, it is possible to eliminate the exposure of the ring tube portion 7c and the tube wall 8a, which tend to give a harsh or complicated impression with a skeleton, so that the appearance of the support column is gentle. A rich impression can be made and the appearance of the column can be refreshed. In the state where the lock handle 9 is switched to the locked position, the push-up link 10 is housed in the lock handle 9, and the link guide portion 13 and the bracket portion 20 are covered with the lock handle 9. It can be refreshed.

  When the lock portion cover 32 is fixed to the upper end of the lower frame body 2 and the outer surface of the lock handle 9 is covered with the handle cover 31, the lock handle 9 and the holding ring 8 are prevented from being exposed to the outside of the column. The appearance can be further refined with a gentle impression. Further, since the lock portion cover 32 and the handle cover 31 are each formed of an impact absorbing material, even if the user of the column accidentally collides with the holding ring 8, the collision impact is caused by the covers 31 and 32. Can be absorbed to prevent the user from being injured.

  In the lock mechanism 5 for holding and fixing the upper frame body 1, when the lock handle 9 and the link guide portion 13 are connected by one push-up link 10, compared to a conventional lock mechanism having a pair of links as components, Since the lock mechanism can be simplified and the labor required for assembly can be reduced, the cost required for manufacturing the column can be reduced accordingly.

  When the handle main body 21 and the fulcrum ring 7 of the lock handle 9 are formed of a plastic molded product, the lock structure is lighter than the conventional lock structure in which the fixing ring (fulcrum ring) and the handle are formed of a metal material. This can greatly contribute to the weight reduction of the strut fixed type support.

  According to the fulcrum ring 7 constituted by a pair of left and right half ring bodies 7a and 7b, the pair of half ring bodies 7a and 7b are joined and fitted into the lower frame body 2 to be provided on the half ring body 7a. The fulcrum ring 7 can be fixed to the lower frame 2 so as not to drop off by engaging the elastic engagement claws 17 with the engagement holes 18 provided in the lower frame 2. Therefore, the fixing ring is fitted on the upper end of the large-diameter pipe, and the upper and lower sides of the link connecting pieces must be fastened with bolts. The time and effort can be greatly reduced. Further, since the guide groove 14 for the fulcrum shaft 25 is formed in a non-penetrating groove shape on the opposite surface of the link guide portion 13, the fulcrum shaft 25 and the lower portion of the push-up link 10 are always covered with the link guide portion 13, The appearance of the fulcrum ring 7 can be made clear.

  A handle lock structure is configured by the lock recess 15 provided in the lower portion of the link guide portion 13 and the lock shaft body 36 provided with the lock claw 37. According to such a handle lock structure, the lock handle 9 can be locked and held by engaging the lock claw 37 with the lock recess 15 only by sliding the lock shaft body 36 from the unlock position to the lock position. In addition, since the lock handle 9 that has been locked can be locked and held with a single touch, the lock handle 9 can be held securely and simply as compared with the conventional support, and the safety of the support can be improved.

  When the display unit 40 is provided at the lower end of the lock shaft body 36 and the lock shaft body 36 is in the unlocked state, when the display unit 40 protrudes from the display opening 33 of the handle cover 31, the lock handle 9 is not locked. This can be clearly displayed to alert the user. Therefore, the lock handle 9 can be prevented from being left in a state where the lock handle 9 is not held in a locked state, and the safety of the strut-fixed support column can be improved. In addition, in a state where the lock handle 9 is locked and held by the lock shaft body 36, the display unit 40 fits inside the outer shape of the handle cover 31, so that it can be known that the lock handle 9 is properly locked and held. .

  When a reset mechanism including a cam shaft 42 and a reset cam body 43 is provided inside the lock handle 9, the cam shaft 42 is rotated from the outer surface of the handle cover 31, whereby the passive portion 44 of the lock shaft body 36 is operated. Can be pushed out by the cam body 43 to reset the lock shaft body 36 to the unlocked position outside the handle cover 31. According to such a column, the lock handle 9 can be locked and held by the lock shaft 36 with one touch, whereas when the lock shaft 36 is unlocked, the cam shaft 42 is rotated from the outer surface of the handle cover 31. It is necessary to operate, and the operation can be complicated. Therefore, it is possible to prevent the lock handle 9 from being easily switched to the unlocking posture and improve the safety of the support column.

It is a vertical side view which shows the locking mechanism 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 the sectional view on the AA line in FIG. It is a vertical side view of the state which locked the lock handle. It is the BB sectional view taken on the line in FIG. It is a side view which shows another example of use of a strut fixed type | mold support | pillar.

(Example) FIG. 1 thru | or FIG. 5 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 crossing arrows shown in FIGS. 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 5 that locks and holds the upper frame body 1 drawn out from the frame body 2 so as not to move up and down is provided. 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.

  The lock mechanism 5 is shown in FIGS. The lock mechanism 5 includes a fulcrum ring 7 that is fixed to the upper portion of the lower frame body 2, a holding ring 8 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 8, a lock handle 9 supported so as to be swingable up and down, a push-up link 10 connecting the fulcrum ring 7 and the lock handle 9, a cam structure provided on the base end of the lock handle 9 and the holding surface of the holding ring 8, etc. It consists of A handle lock structure is provided between the fulcrum ring 7 and the lock handle 9 to prevent the locked lock handle 9 from being unlocked.

  The fulcrum ring 7 is formed in a round cylindrical shape by joining a pair of left and right halved rings 7a and 7b formed of plastic, and a guide base 12 and a link guide portion 13 are integrally formed at the front joint. It is. As shown in FIG. 5, a guide groove 14 is formed in a non-penetrating groove shape on the opposing surface of the link guide portion 13, and a lock recess 15 of a handle lock structure described later is formed on the lower end surface of the link guide portion 13. Is formed. The ring cylinder portion 7c of the fulcrum ring 7 is accommodated in the upper part of the inner surface of the lower frame body 2, and only the guide base 12 and the link guide portion 13 are exposed to the outer surface from the vertical opening 16 formed in the front surface of the lower frame body 2. is there. An elastic engagement claw 17 is integrally formed at the lower end of one half ring body 7a, and the elastic engagement claw 17 is dropped into and engaged with an engagement hole 18 provided below the vertical opening 16. Thus, the fulcrum ring 7 is prevented from falling off the lower frame body 2 (see FIG. 1).

  The holding ring 8 is formed in a round cylindrical shape by cutting an aluminum die cast product, and a pair of bracket portions 20 that support the lock handle 9 are integrally formed on the front surface thereof. As shown in FIG. 3, the left and right bracket portions 20 are opposed to each other via a gap, and the gap is narrowed by a cam structure so that the cylindrical wall 8 a of the holding ring 8 is closely attached to the upper frame body 1. The upper frame body 1 is held and fixed by the frictional force. Similar to the fulcrum ring 7, the cylindrical wall 8 a of the holding ring 8 is accommodated in the upper part of the inner surface of the lower frame 2, and only the bracket portion 20 is formed from the vertical opening 16 formed on the front surface of the lower frame 2. It is exposed on the outside. As described above, when the ring cylinder portion 7c of the fulcrum ring 7 and the cylinder wall 8a of the holding ring 8 are accommodated inside the lower frame body 2, the members exposed to the outer surface of the column are the lock handle 9 and the push-up link 10. And only in the link guide part 13 and the bracket part 20, the external appearance of a support | pillar can be made clear.

  The lock handle 9 includes a handle body 21 made of plastic and reinforcing metal fittings 22 (see FIG. 3) fixed to the left and right sides of the swing base end of the handle main body 21. Is pivotally connected to the bracket portion 20 by a handle support shaft 23. Further, the other end side of the reinforcing bracket 22 and the handle body 21 are connected to the upper portion of the push-up link 10 by a link shaft 24. Only one push-up link 10 is arranged at the left and right center of the lock handle 9, and a fulcrum shaft 25 provided at the lower end thereof is slidably guided and supported by the guide groove 14 of the link guide portion 13. The lock handle 9 can swing up and down around the handle support shaft 23 between the unlocking posture shown in FIG. 1 and the locking posture shown in FIG. As described above, when the lock handle 9 and the link guide portion 13 are connected by one push-up link 10, the lock mechanism is simplified as compared with the conventional lock mechanism in which the push-up link is constituted by a pair of links. Furthermore, since the labor required for assembly can be reduced, the cost required for manufacturing the support can be reduced accordingly.

  As shown in FIGS. 3 and 4, the cam structure is composed of a pair of cam pieces 28 bulging and formed on the outer surface of the bracket portion 20, and an operation portion 29 provided at the connecting portion of the handle body 21. When the simple operation portion 29 rides on the cam piece 28, the opposing gap of the bracket portion 20 can be narrowed, and the cylindrical wall 8 a can be in close contact with the upper frame body 1. In order to restrict excessive elastic deformation of the operating portion 29 at the time of tightening, the reinforcing metal fitting 22 is provided. The cam piece 28 is formed with an inclined guide surface 30 for smooth climbing of the operation portion 29 (see FIG. 4).

  In order to make the appearance of the lock handle 9 switched to the lock posture clear, the outer surface of the lock handle 9 is covered with a handle cover 31. Further, a lock portion cover 32 that covers the upper portion of the lock handle 9 that has been swung in the locked state and the upper portion of the holding ring 8 is fixed to the upper end of the lower frame body 2. Thus, by covering the upper portion of the holding ring 8 and the outer surface of the lock handle 9 with the lock portion cover 32 and the handle cover 31, the lock handle 9 and the bracket portion 20 are concealed in a state where the support column is stretched and fixed. , Can make the appearance of the column clean. A display opening 33 that allows a lock shaft 36 to be described later to enter and exit is formed in the lower portion of the handle cover 31. The lock portion cover 32 and the handle cover 31 are each formed of an impact absorbing material such as rubber, elastomer, or foamed resin.

  In the state in which the lock handle 9 is operated to the unlocking posture shown in FIG. 1, the link shaft 24 is positioned at the upper end of the guide groove 14, and the holding ring 8 is expanded by its own elasticity. Therefore, the upper frame 1 can be freely put in and out of the holding ring 8 and the lower frame 2. In this state, when the lock handle 9 is swung downwardly as indicated by an imaginary line in FIG. 1 with the handle support shaft 23 as the center, the push-up link 10 moves downward along with the lock handle 9, and the link shaft 24 is received at the lower end of the guide groove 14. When the lock handle 9 is further pushed down, the operation portion 29 of the handle main body 21 rides on the cam piece 28 via the inclined guide surface 30, so that the pair of bracket portions 20 approach each other and the cylindrical wall 8a is reduced in diameter. The upper frame body 1 is held and fixed. On the other hand, since the link shaft 24 is received at the lower end of the guide groove 14, the push-up link 10 does not move downward any more and supports the lock handle 9 in a stretched manner. After the link shaft 24 is received by the lower end of the guide groove 14, the lock handle 9 swings downward about the link shaft 24, and as shown in FIG. The upper frame body 1 is pushed upward to switch to the locked posture. The ceiling pressing body 3 comes into close contact with the ceiling R after the upper frame body 1 starts to move upward, and the ceiling spring provided inside the ceiling pressing body 3 is elastically deformed when the lock handle 9 is switched to the locked position. Then, the entire ceiling pressing body 3 is pressed against the ceiling R.

  A handle lock structure is provided between the lock handle 9 and the fulcrum ring 7 in order to prevent the lock handle 9 switched to the lock posture from being accidentally unlocked. 1 and 4, the handle lock structure includes a lock recess 15 provided at the lower portion of the link guide portion 13 and a lock shaft body 36 attached to the lower portion of the lock handle 9. The lock shaft body 36 is guided and supported by the handle body 21 so as to be slidable up and down. A lock claw 37 that engages with and disengages from the lock recess 15 is provided at the upper end of the lock shaft body 36.

  As shown in FIG. 4, in a state where the lock handle 9 is switched to the locked state, the lock claw 37 can be moved into the lock recess only by sliding the lock shaft body 36 from the lower unlock position to the upper lock position. 15, the lock handle 9 can be restricted from being unlocked. As described above, the lock shaft body 36 can lock and hold the lock handle 9 switched to the locked state with one touch, and therefore, the lock handle 9 can be held securely and simply as compared with the conventional support column. Safety can be improved. In order to hold the lock shaft body 36 in the unlocking position and the locking position, a moderation arm 38 is provided adjacent to the lock claw 37, and a moderation rib 39 that engages the moderation arm 38 is provided inside the handle body 21. It is provided.

  In order to clearly display that the lock shaft body 36 is in an unlocked state and call the user's attention, as shown in FIG. 1, red display portions 40 are provided on the front surface and the left and right side surfaces of the lock shaft body 36. Is provided. When the lock shaft body 36 is switched to the unlocked position, the lower side of the display unit 40 is exposed to the outside of the display opening 33, so that it is clearly displayed that the lock handle 9 is not locked and used. Call attention. As a result, the lock handle 9 can be prevented from being left in a state where the lock handle 9 is not held in a locked state, and the safety of the tension-fixed support column can be improved. Further, as shown in FIG. 4, in the state where the lock shaft body 36 is switched to the lock position, the display unit 40 fits inside the outer shape of the handle cover 31, so that the lock handle 9 is properly locked and held. I can confirm that.

  A reset mechanism is provided inside the lock handle 9 in order to reset the lock shaft body 36 switched to the lock position to the unlock position and return the lock handle 9 to the unlockable state. As shown in FIG. 5, the reset mechanism includes a cam shaft 42 that is rotatably supported at both ends by the lock handle 9 and penetrates the lock shaft body 36 to the left and right, a reset cam body 43 fixed to the cam shaft 42, An operating head 42a provided at the right end of the cam shaft 42 is provided (see FIG. 5). In addition, the lock shaft body 36 is provided with a passive portion 44 that is reset to the unlocking position by the cam body 43 in a partial arc shape. The cam body 43 is formed in a string shape and can rotate in a through hole 45 provided in the lock shaft body 36. The lock shaft 36 is provided with a relief groove 46 that slides relative to the cam shaft 42, and a tool hole 48 for inserting a hexagon wrench (operation tool) 47 into the handle cover 31 facing the operation head 42 a. Is open (see FIG. 5).

  As shown in FIG. 4, when the lock shaft body 36 is displaced to the lock position, a hexagon wrench 47 is inserted into the tool hole 48 from the outer surface of the handle cover 31 and engaged with the operation head 42a of the cam shaft 42. Then, by rotating the cam shaft 42, the passive portion 44 can be pushed out by the cam body 43, and the lock shaft body 36 can be reset to the unlocked position outside the handle cover 31. At this time, since the cam body 43 is formed in a string shape, the rotation operation direction of the hexagon stick wrench 47 may be either a clockwise rotation direction or a counterclockwise rotation direction.

  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. Further, as shown in FIG. 6, a plurality of columns can be stretched and fixed along a wall surface such as a corridor, and the handrail bar 51 can be supported and used by a connection bracket 50 fixed to the lower frame body 2 of each column. .

  In the lock mechanism 5 described above, the link guide portion 13 provided on the fulcrum ring 7 and the bracket portion 20 provided on the holding ring 8 are exposed to the outer surface of the lower frame body 2 from the vertical opening 16 opened in the lower frame body 2. In this state, the ring cylinder portion 7 c of the fulcrum ring 7 and the cylinder wall 8 a of the holding ring 8 were accommodated inside the lower frame body 2. That is, the conspicuous fulcrum ring 7 and the ring cylindrical portion 7c and the cylindrical wall 8a of the holding ring 8 are accommodated and concealed inside the lower frame 2, and the main portions of both rings 7 and 8 are exposed outside the support column. Was prevented. Further, the link guide portion 13 of the fulcrum ring 7 and the bracket portion 20 of the holding ring 8 are exposed from the vertical opening 16 opened in the lower frame body 2 so that the lock handle 9 and the push-up link 10 can be switched without trouble. I was able to do it. According to such a lock mechanism, the fulcrum ring 7 and the hugging ring 8 that are likely to give a harsh or complicated impression with a bone are eliminated from being exposed to the outside of the column, and the appearance of the column is rich in kindness. It is possible to make the appearance of the column clear. In the state in which the lock handle 9 is switched to the locked posture, the push-up link 10 is housed in the lock handle 9 and the link guide portion 13 and the bracket portion 20 are covered with the lock handle 9, so that the appearance of the column is pushed up. It will not be damaged by the link 10 or the like.

  Since the lock cover 32 is fixed to the upper end of the lower frame body 2 and the outer surface of the lock handle 9 is covered with the handle cover 31, metal parts such as the lock handle 9 and the holding ring 8 are exposed to the outside of the column. It is possible to prevent the appearance of the support column from being more gentle and to make the appearance clean. In addition, since the lock portion cover 32 and the handle cover 31 are each formed of a shock absorbing material, even if the user of the column accidentally collides with the previous metal part, the collision is caused by the covers 31 and 32. Absorbing the impact and preventing the user from being injured can ensure the safety of the user of the column. Further, by forming the handle body 21 and the fulcrum ring 7 of the lock handle 9 from a plastic molded product, the lock structure can be compared with the conventional lock structure in which the fixing ring (fulcrum ring) and the handle are formed of a metal material. This can greatly contribute to the weight reduction of the brace-fixed support column.

  According to the fulcrum ring 7 constituted by a pair of left and right half ring bodies 7a and 7b, the pair of half ring bodies 7a and 7b are joined and fitted into the lower frame body 2 to be provided on the half ring body 7a. The fulcrum ring 7 can be fixed to the lower frame 2 so as not to drop off by engaging the elastic engagement claws 17 with the engagement holes 18 provided in the lower frame 2. Therefore, the fixing ring is fitted on the upper end of the large-diameter pipe, and the upper and lower sides of the link connecting pieces must be fastened with bolts. The time and effort can be greatly reduced. Further, since the guide groove 14 for the fulcrum shaft 25 is formed in a non-penetrating groove shape on the opposite surface of the link guide portion 13, the fulcrum shaft 25 and the lower portion of the push-up link 10 are always covered with the link guide portion 13, The appearance of the fulcrum ring 7 can be made clear.

  Since the reset mechanism including the cam shaft 42 and the reset cam body 43 is provided inside the lock handle 9, the passive portion 44 of the lock shaft body 36 is operated by rotating the cam shaft 42 from the outer surface of the handle cover 31. Can be pushed out by the cam body 43 to reset the lock shaft body 36 to the unlocked position outside the handle cover 31. According to such a column, the lock handle 9 can be locked and held by the lock shaft body 36 with one touch, whereas when the lock shaft body 36 is unlocked, the hexagon wrench 47 is pulled from the outer surface of the handle cover 31. It is necessary to insert and rotate the camshaft 42, and the operation for unlocking can be complicated as compared with the case where the lock handle 9 is locked. Therefore, it is possible to prevent the lock handle 9 from being easily switched to the unlocking posture and improve the safety of the support column.

  In the above-described embodiment, the fulcrum ring 7 is configured by the pair of left and right half ring bodies 7a and 7b, but this is not necessary, and the fulcrum ring 7 may be configured as a single component. Further, the lock handle 9 may be a handle formed of a metal material, and the holding ring 8 may be formed of a plastic molded product.

DESCRIPTION OF SYMBOLS 1 Upper frame body 2 Lower frame body 3 Ceiling press body 4 Floor contact body 7 Supporting ring 8 Holding ring 9 Lock handle 10 Push-up link 13 Link guide part 16 Vertical opening 23 Handle support shaft 24 Link shaft 25 Support point shaft 31 Handle cover 32 Lock cover

Claims (8)

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 lock provided between the upper part of the lower frame (2) and the middle part of the upper frame (1) to lock and hold the upper frame (1) pulled out from the lower frame (2) so as not to move up and down. A strut-fixed support column provided with a mechanism (5),
The lock mechanism (5) includes a fulcrum ring (7) fixed to the upper part of the lower frame (2) and an outer part of the upper frame (1) to hold and fix the middle part of the frame (1). Holding ring (8), lock handle (9) supported by the holding ring (8) so as to be swingable up and down, and push-up link (10) connecting the fulcrum ring (7) and the lock handle (9) With
The link guide part (13) provided in the fulcrum ring (7) and the bracket part (20) provided in the holding ring (8) are exposed to the outer surface from the vertical opening (16) opened in the lower frame (2). In this state, the ring cylinder portion (7c) of the fulcrum ring (7) and the cylinder wall (8a) of the holding ring (8) are accommodated inside the lower frame body (2). Mold prop. A lock part cover (32) covering the upper part of the lock handle (9) and the upper part of the holding ring (8), which are swung in a locked state, is fixed to the upper end of the lower frame (2),
The outer surface of the lock handle (9) is covered with a handle cover (31),
The strut-fixed support column according to claim 1, wherein the lock portion cover (32) and the handle cover (31) are each formed of an impact absorbing material.   The link handle (13) of the lock handle (9) and the fulcrum ring (7) is connected by a single push-up link (10) disposed at the center of the lock handle (9). The strut fixed type support according to 2.   The strut-fixed support column according to claim 3, wherein the handle body (21) and the fulcrum ring (7) of the lock handle (9) are formed of a plastic molded product. The fulcrum ring (7) is formed in a cylindrical shape by joining a pair of left and right halved rings (7a, 7b) molded with plastic,
A guide base (12) and a link guide portion (13) are integrally formed at the front joint, and a fulcrum shaft (25) fixed to the push-up link (10) is formed on the opposing surface of the link guide portion (13). A guide groove (14) for sliding and guiding is formed in a non-through groove shape,
The elastic engagement claw (17) provided at the lower end of the half ring body (7a) engages with the engagement hole (18) provided in the lower frame body (2), so that the fulcrum ring (7) becomes the lower frame. The strut-fixed support column according to any one of claims 1 to 4, which is fixed to the body (2) so as not to fall off. A handle lock structure is provided between the lock handle (9) and the fulcrum ring (7) to prevent the locked lock handle (9) from being operated in the unlocking direction.
The handle lock structure includes a lock recess (15) provided at a lower portion of the link guide portion (13), and a lock shaft body (36) supported and supported so as to be reciprocally slidable by the lock handle (9).
The lock shaft (36) is provided with a lock claw (37) that engages and disengages with the lock recess (15).
When the lock handle (9) is switched to the locked state, the lock claw (37) is engaged with the lock recess (15) by sliding the lock shaft (36) from the unlocked position to the locked position. Then, the strut-fixed support column according to any one of claims 1 to 5, wherein the lock handle (9) is locked and held so as not to be unlocked. At the lower end of the lock shaft (36), a display unit (40) for displaying that the lock shaft (36) is in the unlocked position is provided,
A display opening (33) that allows the display unit (40) to enter and exit is formed at the bottom of the handle cover (31),
When the lock handle (9) is locked and the lock shaft (36) is positioned at the unlock position, the display unit (40) protrudes from the display opening (33),
The display portion (40) is contained within the outer shape of the handle cover (31) when the lock handle (9) is locked and the lock shaft (36) is displaced to the lock position. Strut-fixed support column as described in 1. Inside the lock handle (9), there is provided a reset mechanism for resetting the lock shaft body (36) displaced to the lock position to the unlock position,
A reset mechanism is rotatably supported by the lock handle (9) and penetrates the lock shaft (36) from side to side, and a reset cam body (43) fixed to the cam shaft (42). A passive portion (44) provided on the lock shaft body (36) and reset to the unlocking position by the cam body (43), and a cam shaft (42) facing the outer surface of the lock handle (9). An operating head (42a) provided,
The lock shaft body (36) has a relief groove (46) that slides relative to the cam shaft (42).
In a state where the lock shaft (36) is displaced to the lock position, the passive portion (44) of the lock shaft (36) is moved by rotating the cam shaft (42) from the outer surface of the handle cover (31). The strut-fixed support column according to any one of claims 2 to 7, wherein the lock shaft (36) can be reset to the unlocking position outside the handle cover (31) by being pushed out by the cam body (43). .

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