JP3647003B2 - easel - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a canvas, a picture rack, a picture rack, and the like on a support member attached to a leg when drawing a picture. Specifically, the attachment position of the support member can be easily changed according to the size of the canvas. It is about the picture rack.
[0002]
[Prior art]
Conventionally used picture racks are composed of a tripod and a support rod connected to the top of the tripod in the vertical direction. As shown in FIGS. 21 and 22, a support member 110 on which a canvas, a picture, a photograph, etc. (hereinafter, only “canvas” is described) is attached is attached to an arbitrary portion of the two legs on the near side. The support member 110 includes a C-shaped base portion 111 that is externally fitted to the two legs 100 on the front side, a fixture 112 that is sandwiched between both ends of the bent base portion 111, and a bolt that fastens both ends of the base portion 111. 113 and a nut 114, and a receiving part 115 which is formed by forming a linear member into an L shape and is screwed to the fixture 112.
[0003]
On the other hand, a support rod 107 whose top is bent into an L shape as shown in FIG. 23 is connected to the connecting portion of the three legs 100. A pressing member 120 is fixed to the top of the support rod 107. The holding member 120 includes a claw member 121 that locks the canvas C, and a screw 122 that fixes the claw member to the support rod 107. The claw member 121 has a distal end bent so that the upper edge of the canvas C can be locked, and is provided with a long hole 121a through which the screw 122 is inserted in order to be able to cope with various thicknesses of the canvas C. Yes.
[0004]
The conventional picture frame is configured as described above, and the lower edge of the canvas C is placed on the receiving portion 115 of the support member 110 attached to the leg 100, and the upper edge of the canvas C is locked to the claw member 121 of the holding member 120. As a result, the canvas C is fixed to the picture rack. Further, the mounting position of the support member 110 and the position of the claw member 121 can be adjusted according to the size of the canvas C.
[0005]
That is, since the support member 110 is attached to the leg 100, when the small canvas C is fixed, the support member 110 is fixed to the upper side of the leg 100, and when the large canvas C is fixed, the support member 110 is fixed to the leg 100. Secure to the underside. The support member 110 can be moved to an arbitrary position of the leg 100 by loosening the bolt 113. The lower edge of the canvas C is supported by a receiving portion 115 obtained by bending a linear member into an L shape, and does not fall off.
[0006]
On the other hand, the claw member 121 of the pressing member 120 is pulled forward when the canvas C is thick, and is pushed out to the back side when the canvas C is thin. By moving the claw member 121 in this way, various thicknesses of the canvas C can be handled.
[0007]
[Problems to be solved by the invention]
In order for the conventional picture rack to be housed compactly, the leg 100 is composed of an outer tube and an inner tube. That is, when the picture rack is not used, the inner pipe is accommodated in the outer pipe and the leg 100 is shortened. When the picture rack is used, the inner pipe is extended from the outer pipe and the leg 100 is lengthened. Then, the canvas C is placed on the support member 110 attached to the leg 100. In order to mount the canvas C stably, the support member 110 can be mounted at different positions according to the size of the canvas C.
[0008]
However, since the base portion 111 of the conventional support member 100 is formed in accordance with the outer diameter of the outer tube, the size of the canvas C can only be accommodated within the length of the outer tube. That is, when placing a small canvas C, the support member 110 can be attached to the upper side of the outer tube. However, even when a large canvas C is placed, the base 111 of the support member 110 cannot be attached to the inner tube at a wide interval, and the support member 100 must be attached below the outer tube. Even on the lower side of the outer tube, when the size of the canvas C is large, the way of placing becomes unstable. Although it is possible to attach two sets of support members 110 corresponding to the outer diameter of the outer tube and the inner tube, this can increase the cost or the support member 110 which is not used is obstructive.
[0009]
Further, since the conventional support member 110 has the base 111 fixed to the leg 100 by the bolt 113 and the nut 114, there is a problem that it is necessary to carry a driver or the like. Moreover, when it is necessary to adjust the mounting position of the support member 110 while placing the canvas C on the receiving portion 115 of the support member 110, the bolt 113 and the nut are held with the other hand while holding the canvas C with one hand. 114 had to be tightened, and it was actually difficult to work alone.
[0010]
In addition, the frame must be adjusted to the length of the leg 100 by extending the inner tube from the outer tube in accordance with the size of the canvas C. Before the canvas C is placed on the support member 110, the length of the leg 100 can be adjusted by extending the inner tube from the outer tube by an appropriate length with the image frame laid down, and then raising the image frame. Consider whether there is a leg 100 of inappropriate height. And if there is a leg 100 of an inappropriate length, the above operation must be repeated.
[0011]
However, in order to fix the inner pipe extended from the outer pipe, it is necessary to loosen or tighten the member for adjusting the length of the leg 100. Therefore, the work of adjusting the length of the leg 100 is not necessary. It was very troublesome. In addition, since there are three legs 100, it has been difficult for the user to adjust the height of the picture rack.
[0012]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a picture frame in which a support member can be attached to an outer tube or an inner tube of a leg and the length of the leg can be easily adjusted. And
[0013]
[Means for Solving the Problems]
A first means for solving the above-mentioned problem is to externally fit to a leg in a frame in which a support member is attached to a leg composed of an outer tube and an inner tube extending and retracting from the outer tube. A support member is constituted by a C-shaped annular member, a fastening member that brings both ends of the annular member closer, and a receiving part. A spherical protrusion is provided on the annular member, and a flat part and a flat part are provided on the receiving part. A vertical part protruding from the lower surface on both sides of the part is formed, and a round hole is formed in the vertical part to engage the spherical protrusion, and a protrusion is provided on the side of the spherical protrusion. The projection is characterized in that the projection can move only within the round hole .
[0014]
According to said 1st means, the cyclic | annular member externally fitted to a leg was made into C shape, Therefore The both ends of a cyclic | annular member approach or separate according to the outer diameter of a leg. And since the both ends of this annular member are made to approach by a fastening member, a support member can be attached in the state which fastens a leg.
[0015]
Moreover, according to said 1st means, since the support member was comprised from the annular member and the receiving member, a canvas can be mounted on a receiving member. Since the annular member can be attached to a leg at an arbitrary position, the receiving member can be mounted in accordance with the size of the canvas. In addition, the annular member and the receiving portion are supported in a compact manner by raising the receiving portion because the spherical protruding portion protruding from the annular member engages with the round hole drilled in the vertical portion of the receiving portion. The member can be accommodated, and the canvas can be placed by setting the receiving portion to a horizontal posture.
[0016]
The second means for solving the above-mentioned problem is that the distal end portion of the fastening member described in the first means is bent so as to correspond to the outer diameter of the outer tube or the inner tube. The drawing frame is characterized in that a plurality of engaging grooves for engaging the tip portion are formed at one end of the annular member.
[0017]
According to said 2nd means, when attaching a support member to an outer pipe | tube with a large outer diameter, the front-end | tip part of a fastening member is engaged with the engagement groove | channel on an edge part side, and it supports to an inner pipe | tube with a small outer diameter. When attaching a member, the front-end | tip part of a fastening member can be engaged with the engaging groove near a center part, and a fastening member can be attached to a leg.
[0018]
According to a third means for solving the above-mentioned problem, a bearing is projected from the other end portion of the annular member described in the first means or the second means, and a base end portion of a lever is provided on the bearing. It is a picture frame characterized in that it is pivotally attached and a base end portion of a fastening member is pivotally attached to an intermediate part of the lever.
[0019]
According to the third means described above, the lever can be swung with the bearing protruding from the annular member as the rotating shaft, and the fastening member can be swung with the intermediate portion of the lever as the rotating shaft. Therefore, when the free end portion of the lever is separated from the annular member, the fastening member is detached from the annular member, and when the free end portion of the lever is brought close to the annular member in a state where the fastening member is engaged with the annular member, Can be kept engaged with the annular member.
[0020]
According to a fourth means for solving the above-mentioned problem, in a frame including a leg in which an outer tube and an inner tube extending and retracting from the outer tube are connected by a clamper, the clamper is relatively moved in the axial direction. The inner cylinder is composed of a moving inner cylinder and an outer cylinder. A slit is formed at the end of the inner cylinder on the side where the inner pipe is fitted, and the outer circumference is increased in a tapered shape, and a guide hole is formed in the inner cylinder. The pin that fits into the guide hole protrudes from the inner surface of the outer cylinder. When a rotational force is applied to the outer cylinder, the pin protruding from the inner surface of the outer cylinder moves in the guide groove of the inner cylinder. When the outer cylinder rotates in the vertical direction and circumferential direction, the inner cylinder moves in the axial direction in the outer cylinder, and the pin is located in the guide hole near the upper end of the inner cylinder, it is tapered. The end of the expanded inner cylinder on the side that fits the inner pipe protrudes from the lower end of the outer cylinder, and the inner pipe in the inner cylinder can move freely When the pin is located in the circumferential guide hole away from the upper end portion of the inner cylinder, the end portion of the inner cylinder on the side where the inner tube is externally fitted is housed in the lower end portion of the outer cylinder, The lower end portion has a reduced diameter to tighten the inner tube .
[0021]
According to said 4th means, since the slit was formed in the edge part of an inner cylinder, the edge part of the inner cylinder can be diameter-expanded and reduced. Since the outer circumference of the end of the inner cylinder is tapered, the end of the inner cylinder is reduced in diameter when the end of the inner cylinder is stored in the outer cylinder. Conversely, when the end of the inner cylinder protrudes from the inside of the outer cylinder, the end of the inner cylinder whose diameter has been expanded expands outside the outer cylinder, so that the end of the inner cylinder increases in diameter. When the end of the inner cylinder is reduced in diameter, the inner tube in the inner cylinder is held by the inner cylinder, and when the end of the inner cylinder is increased in diameter, the inner pipe in the inner cylinder is not held by the inner cylinder.
[0022]
According to said 4th means, the pin which protruded to the inner surface of the outer cylinder moves relatively within the guide hole formed in the inner cylinder by rotating an outer cylinder. Therefore, actually, the inner cylinder in which the pin is inserted into the guide hole moves in the outer cylinder in the axial direction, and the end portion of the inner cylinder in which the slit is formed is expanded or contracted.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view when the picture rack according to the present invention is used. FIG. 2 is a front view when the picture rack according to the present invention is used. FIG. 3 is a side view when the picture rack according to the present invention is used. FIG. 4 is a side view of a use mode different from FIG. 3 of the picture rack according to the present invention.
[0024]
FIG. 5 is a perspective view of a connector constituting the picture rack according to the present invention. FIG. 6 is an exploded perspective view of a clamper constituting the picture rack according to the present invention. FIG. 7 is a front view when the clamper constituting the picture rack according to the present invention is loosened. FIG. 8 is a front view when the clamper constituting the picture rack according to the present invention is fastened.
[0025]
FIG. 9 is a perspective view of a support member constituting the picture rack according to the present invention. FIG. 10 is an exploded perspective view of a support member constituting the picture rack according to the present invention. FIG. 11 is a plan view before a support member constituting the picture rack according to the present invention is fixed to a leg. FIG. 12 is a plan view after the supporting member constituting the picture rack according to the present invention is fixed to the leg.
[0026]
FIG. 13 is an exploded perspective view of the pressing member for the picture frame according to the present invention. FIG. 14 is a perspective view of the pressing member for the picture rack according to the present invention. FIG. 15 is a front sectional view of the pressing member of the picture rack according to the present invention. FIG. 16 is a plan view of the pressing member of the picture rack according to the present invention.
[0027]
As shown in FIG. 1, the picture rack according to the present invention is pivotally attached by a connecting tool 3 at the apex so that the three legs 1 can be closed and opened, and a support rod 7 is moved up and down on the connecting tool 3. The basic structure is freely inserted. As shown in FIG. 5, the connecting member 3 that pivotally attaches the three legs 1 and passes through the support rod 7 has a T-shape in plan view, and is provided on the lower surface of the protruding portion 31 protruding in three directions. Forms a groove 32 into which the leg 1 is inserted, and forms a rectangular tube portion 33 through which the support rod 7 is inserted at the center.
[0028]
A continuous hole (not shown) through which a bolt (not shown) or the like is inserted is drilled in the upper end of the leg 1 inserted into the groove 32 of the three protruding parts 31 and each protruding part 31, The bolt is fastened by a nut (not shown) and pivotally attached to the connector 3 so that the leg 1 can swing. By allowing the legs 1 to swing, the legs can be closed and stored compactly when the picture rack is not used, and can be stood upright when the picture rack is used. The leg 1 that has been opened abuts against the inner wall 34 of the protrusion 31 and does not open beyond a certain level. The inner wall 34 with which the leg 1 abuts can be opened in a stable state by chamfering the arc.
[0029]
The leg 1 is a double tube composed of an outer tube 10 and an inner tube 20, and has a length in a state in which the inner tube 20 is housed in the outer tube 10 and a state in which it protrudes from the outer tube 10 by an arbitrary length. To be able to change. Since the planar shape of the connector 3 that holds the legs 1 is T-shaped, when the three legs 1 have the same length, the front surface stands upright as shown in FIG. When the front leg 1 is longer than the far leg 1, the front face is inclined as shown in FIG.
[0030]
In order to adjust the leg 1 to a desired length, the inner tube 20 pulled out from the outer tube 10 is temporarily fixed by a clamper 4 as shown in FIGS. The clamper 4 includes an outer cylinder 40 and an inner cylinder 50 having the same length as the outer cylinder 40. A step 43 is provided on the inner surface of the outer cylinder 40 so as to have two steps of a reduced diameter portion 41 on the lower side and an enlarged diameter portion 42 on the upper side. A small hole is formed at one point of the boundary of the step 43, and a pin 44 that projects into the outer cylinder 40 is fitted into the small hole.
[0031]
On the other hand, the inner surface of the inner cylinder 50 includes an enlarged diameter portion that fits the lower end portion 11 of the outer tube 10 of the leg 1, and the inner tube 20.
The reduced diameter part which externally fits the upper end part of is formed. In the vicinity of the opening end of the enlarged diameter portion, a pair of convex portions 53 are provided so as to project from the lower end portion 11 of the outer tube 10 and a pair of engagement holes (not shown) for inserting the convex portions 53 are provided. To do. Further, the gap portion 51 is formed in the entire length in the length direction of the inner cylinder 50 so that the inner cylinder 50 can be slightly enlarged and reduced in diameter. By expanding the diameter of the inner cylinder 50, even if the convex portion 53 protrudes from the inner surface, the outer tube 10 is fitted outside, and the convex portion 53 of the inner cylinder 50 is fitted into the engagement hole of the outer tube 10. Can do.
[0032]
A flange 54 is formed at the upper end portion of the outer surface of the inner cylinder 50, and the flange 54 moves relatively only within the enlarged diameter portion 42 of the outer cylinder 40, and is externally fitted from the lower side of the inner cylinder 50. 40 is prevented from coming off the upper side of the inner cylinder 50. The outer surface of the lower end portion 52 of the inner cylinder 50 is a taper that gradually increases in diameter from the intermediate portion. Furthermore, three slits 55 are formed at equal intervals from the lower end 52 of the inner cylinder 50 at an interval of 90 ° from the gap 51 so that the lower side of the inner cylinder 50 can be expanded and contracted.
[0033]
Between the two slits 55, a continuous groove 56 and a guide hole 57 into which the pin 44 protruding from the inner surface of the outer cylinder 40 can be inserted are formed. The guide hole 57 forms an arc part 57a and two linear parts 57b in the circumferential direction and the axial direction at both ends of the arc part 57a, and the guide hole 57 is slightly formed at both boundary parts of the arc part 57a and the linear part 57b. It is assumed that a narrowing projection 57c is provided.
[0034]
When the inner cylinder 50 is inserted into the outer cylinder 40, the pin 44 initially projecting from the inner surface of the outer cylinder 40 is fitted into the groove 56 of the inner cylinder 50, and the lower end portion 52 of the inner cylinder 50 is bent. Is inserted into the guide hole 57, the lower end portion 52 of the bent inner cylinder 50 returns to the original straight posture. The pin 44 fitted in the guide hole 57 can no longer return into the groove 56 and can move only within the guide hole 57. However, the pin 44 cannot freely move in the guide hole 57 due to the projection 57c protruding from the guide hole 57, and the outer cylinder 40 in which the pin 44 is inserted rotates only when a rotational force is applied. be able to.
[0035]
The outer cylinder 40 to which the rotational force is applied rotates slightly in the vertical direction and the circumferential direction, and the pin 44 protruding from the inner surface of the outer cylinder 40 can move in the guide hole 57 of the inner cylinder 50. When the pin 44 is positioned in the guide hole 57 near the flange of the inner cylinder 50, the lower end portion 52 of the inner cylinder 50 slightly protrudes from the lower end portion 45 of the outer cylinder 40 as shown in FIG. Accordingly, the lower end portion 52 of the inner cylinder 50 having a diameter increased in a tapered shape allows the inner tube 50 in the inner cylinder 50 to move freely without reducing the diameter of the inner cylinder 50.
[0036]
When the outer cylinder 40 is rotated and the pin 44 is positioned in the circumferential guide hole 57 away from the flange 54 of the inner cylinder 50, the lower end portion 52 of the inner cylinder 50 is located outside as shown in FIG. It is stored in the lower end 45 of the tube 40. Since the lower end portion 52 of the inner cylinder 50 has a tapered diameter, when the lower end portion 52 of the inner cylinder 50 is stored in the lower end portion 45 of the outer cylinder 40, the lower end portion 52 of the inner cylinder 50 is reduced in diameter. The inside of the lower end 52 of the inner cylinder 50 fastens the inner tube 20. Therefore, the inner tube 20 can be pulled out from the outer tube 10 by an arbitrary length and fixed.
[0037]
As shown in FIGS. 9 to 12, the support member 6 that supports the canvas C includes a base portion 60 that fits the leg 1 and a receiving portion 70 that is pivotally attached to the base portion 60 and places the canvas C thereon. The base 60 includes a C-shaped annular member 61 having flexibility, a lever 62 pivotally attached to the annular member 61, and a fastening member 63 pivotally attached to the lever 62.
[0038]
The annular member 61 is fitted to the leg 1, but in a steady state, the planar shape is not a perfect circle but an elliptical shape as shown in FIG. Then, both ends of the annular member 61 are forcibly expanded to the diameter of the outer tube 10, thereby fitting the annular member 61 so as to tighten the outer tube 10. When the shape of the annular member 61 is an elliptical shape in a steady state, the fitting force with which the annular member 61 tightens the outer tube 10 is increased. In order to make the both end portions of the annular member 61 easily expand, it is desirable to form a groove 61a on the inner surface of the central portion of the annular member 61.
[0039]
One end of the annular member 61 protrudes from a bearing 61 b for pivotally attaching the base end of the lever 62 by a shaft 64. The other end portion of the annular member 61 forms a plurality of engaging grooves 61 c into which the distal end portion of the fastening member 63 is fitted. The distal end portion of the fastening member 63 is bent into a V shape and engages with the engagement groove 61 c of the annular member 61 so that it does not easily disengage from the engagement groove 61 c of the annular member 61. When the annular member 61 is fitted on the outer tube 10 having a large outer diameter, the distal end portion of the fastening member 63 is engaged with the engagement groove 61 c on the end portion side of the annular member 61. When the annular member 61 is externally fitted to the outer tube 10 having a small outer diameter, the distal end portion of the fastening member 63 is engaged with the engaging groove 61 c closer to the center portion of the annular member 61.
[0040]
The base end portion of the fastening member 63 is U-shaped so as to sandwich the lever 62, and is pivotally attached to the intermediate portion of the lever 62 by a shaft 65. The lever 62 swings around the bearing 61b of the annular member 61 around the rotation shaft, and the fastening member 63 swings around the intermediate portion of the lever 62 around the rotation shaft. Therefore, when the free end portion of the lever 62 is separated from the annular member 61, the tip end portion of the fastening member 63 can be removed from the groove of the annular member 61 as shown in FIG. Conversely, when the free end portion of the lever 62 is joined to the annular member 61 in a state where the distal end portion of the fastening member 63 is fitted in the engagement groove 61c of the annular member 61, the distal end portion of the fastening member 63 is shown in FIG. Can be temporarily fixed so as not to be disengaged from the engaging groove 61 c of the annular member 61.
[0041]
As shown in FIG. 10, a flat portion 61 e is formed on the lower side outside the annular member 61. A spherical protrusion 61d is provided in the middle of the outside of the annular member 61, and the receiving part 70 is pivotally attached to the spherical protrusion 61d so that it can face in a relatively arbitrary direction. The receiving part 70 is made of resin or the like so as to have a certain degree of elasticity, and includes a flat part 71 on which the canvas C is placed, a triangular vertical part 72 projecting from the lower surfaces on both sides of the flat part 71, and the tip of the flat part 71 It comprises a drop-off stopper 73 protruding from the part.
[0042]
The inner dimension of the vertical portion 72 is slightly narrower than the outer diameter of the spherical protrusion 61d, and the distal end portion of the vertical portion 72 on the proximal end side is pinned by a pin 74 so that the wide proximal end side of the vertical portion 72 does not expand. Link. Further, a round hole 72a is formed on the base end side of the vertical portion 72 so that the side surface of the spherical protrusion 61d is engaged with the round hole 72a. Even if the inner dimension of the vertical part 72 is slightly narrower than the outer diameter of the spherical protrusion 61d, the receiving part 70 increases the distance between the two vertical parts 72 so that the side surface of the spherical protrusion 61d is the vertical part 72. Can be engaged in the round hole 72a. Further, a U-shaped cutout 71a is formed at the base end of the flat portion 71, and the upper surface of the spherical protrusion 61d is exposed and engaged with the cutout 71a.
[0043]
When the side surface and the upper surface of the spherical protrusion 61d are engaged with the round hole 72a of the vertical portion 72 of the receiving portion 70 and the cutout portion 71a of the flat portion 71, the receiving portion 70 swings between a standing posture and a horizontal posture. Connected as possible. The wide base end surface of the vertical portion 72 can abut the flat portion 61e of the annular member 61 when the receiving portion 70 is in the horizontal posture, and can maintain the horizontal posture.
[0044]
In order to prevent the receiving portion 70 in the standing posture from returning to the horizontal posture, a protrusion 61 f is provided on the top of the spherical protrusion 61 d so that the protrusion 61 f contacts the lower surface of the flat portion 71 of the receiving portion 70. To. In order to make it possible for the receiving portion 70 to maintain the standing posture more reliably, a protrusion (FIG. 5) that is engaged with a protrusion 61f that protrudes from the top of the spherical protrusion 61d at the innermost side of the cutout portion of the flat surface portion 71. (Not shown) can be provided. Since the receiving part 70 has a certain degree of elasticity, by applying a slight force, the protrusion 61f of the spherical protrusion 61d is engaged with the flat part 71 of the receiving part 70 to maintain the standing posture or to remove the protrusion 70f horizontally. Be able to be in posture.
[0045]
The receiving portion 70 in the horizontal posture maintains the horizontal direction in the length direction because the base end surface of the vertical portion 72 contacts the flat portion of the annular member 61. However, since the receiving part 70 is connected to the spherical protrusion 61d, the receiving part 70 rotates in the width direction (θ in FIG. 9) with the central axis as the rotation axis. Therefore, even if the leg 1 is opened and the base portion 60 is inclined, the receiving portion 70 is in a horizontal posture. However, in order to prevent the receiving part 70 from rotating 360 ° in the width direction, protrusions 61g are provided on both side surfaces of the spherical protrusion 61d, and the protrusions 61g are formed in the vertical part 72 of the receiving part 70. It can be moved only through the hole 72a. By doing so, the receiving part 70 can be rotated within a certain angle with the central axis of the flat part 71 as the rotation axis. In this way, the horizontal receiving portion 70 can easily and reliably place the lower edge of the canvas C on the flat portion 71.
[0046]
The upper edge of the canvas C is held by a pressing member 7 fixed to the top of the support rod 7. The pressing member 7 includes a case 80 and a slider 90, as shown in FIGS. An opening 81 is formed on the upper surface of the case 80, and a sawtooth-shaped occlusal portion 82 is formed on the lower surface around the opening 81. An insertion hole 83 through which the slider 90 enters and exits is formed in the front surface of the case 80. On the lower surface of the case 80, a connecting projection 84 for fixing the support rod 7 is provided.
[0047]
On the other hand, the slider 90 is housed in the case 80 and has a plate-like shape that moves back and forth. The front portion protrudes from the insertion hole 83 of the case 80, and the leading end is bent to form the fixing portion 91. Two elastic members 92 having flexibility are protruded from the lower surface of the rear portion of the slider 90 accommodated in the case 80. The elastic member 92 presses the inside of the bottom surface of the case 80 and biases the slider 90 in the case 80 to the outside of the case 80. On the upper surface of the rear portion of the slider 90, a corrugated pressing portion 93 and a knob 94 projecting from the front side of the pressing portion 93 are formed, and the elastic member 92 is pressed by pressing the pressing portion 93 and the knob 94. Be able to bend.
[0048]
On both sides of the knob 94, occlusal portions 95 that are triangular projections that mesh with the occlusal portion 82 of the case 80 are projected. Since the slider 90 is urged out of the case 80 by the elastic member 92, the occlusal portion 95 formed in the slider 90 and the occlusal portion 82 of the case 80 mesh with each other, and the slider 90 is temporarily fixed. When moving the slider 90, the pressing portion 93 and the knob 94 are pressed to bend the elastic member 92, and the occlusal portion 95 of the slider 90 is removed from the occlusal portion 82 of the case 80.
[0049]
The top of the support rod 7 is fixed to the connection convex portion 84 protruding from the lower surface of the case 80. As shown in FIG. 5, the lower portion of the support rod 7 is inserted into a rectangular tube portion 33 formed at the center of the connector 3. The rear surface of the rectangular tube portion 33 communicates with a screw hole (not shown). The screw hole is formed in the top plate portion of the protrusion 31 on the rear side of the connector 3. The fixing screw 35 is inserted into this screw hole. The distal end portion of the fixing screw 35 presses the support rod 7 against the square tube portion 33, so that the support rod 7 maintains a predetermined position. When the fixing screw 35 is loosened, the rear surface of the rectangular tube portion 33 is not pressed by the fixing screw 35, so that the support rod 7 can freely move up and down.
[0050]
The picture rack according to the present invention is configured as described above, and the method for using the same will now be described.
[0051]
In the housed state, the three legs 1 are closed, and the inner tube 20 of the leg 1 is housed in the outer tube 10 to be compact. Therefore, when using, the three legs 1 are opened, and the inner tube 20 of the legs 1 is pulled out from the outer tube 10 according to the size of the canvas C or the like.
[0052]
In order to pull out and fix the inner tube 20 from the outer tube 10, the clamper 4 is operated. That is, as shown in FIG. 7, the lower end portion 52 of the inner cylinder 50 protrudes from the lower end portion 45 of the outer cylinder 40 and the lower end portion 52 of the inner cylinder 50 is expanded in diameter. Then, the inner cylinder 50 does not hold the inner tube 20, and the inner tube 20 can move freely.
[0053]
After the inner tube 20 is pulled out from the outer tube 10 by a desired length, the outer tube 40 is rotated in the opposite direction to the above, and the lower end portion 52 of the inner tube 50 is stored in the outer tube 40 as shown in FIG. Let Then, the diameter of the inner cylinder 50 is reduced to hold the inner pipe 20. Therefore, the inner tube 20 is temporarily fixed and does not enter the outer tube 10.
[0054]
When the three legs 1 have the same length, that is, when the inner cylinder 50 is pulled out from the outer cylinder 40 by the same length, the front leg 1 extends in the lateral direction and the rear leg 1 extends rearward. As shown in FIG. 2, the front surface is in a vertical position. When the length of the rear leg 1 is shorter than the length of the front leg 1, the posture is tilted as shown in FIG. Thus, by setting the leg 1 to an arbitrary length, it is possible to obtain a posture according to the use state.
[0055]
Next, a method for placing the canvas C on the support member 6 will be described. The support member 6 in the stored state has a projection 61f protruding from the top of the spherical projection 61d in an upright position by locking the flat portion 71 of the reception unit 70 so that the reception unit 70 is not caught by clothes. Has been. Therefore, the flat surface portion 71 of the receiving portion 70 is removed from the protrusion 61f of the spherical protrusion 61d to be in a horizontal posture.
[0056]
Further, the support member 6 changes the fixing position according to the size of the canvas C. That is, since the width of the small canvas C is narrow, the support member 6 is fixed to the upper side of the outer tube 10 of the leg 1, and the width of the large canvas C is wide, so the support member 6 is positioned below the inner tube 20 of the leg 1. Fix it. In order to move the support member 6, the free end portion of the lever 62 is separated from the annular member 61 as shown in FIG. 11, and the tip end portion of the fastening member 63 is removed from the engagement groove 61c of the annular member 61 (FIG. The annular member 61 of the support member 6 is not fitted to the leg 1, but the movement of the lever 62 is the same). Then, since the annular member 61 is merely fitted to the leg 1 and the holding force of the annular member 61 is weakened, the support member 6 can be moved with a light force.
[0057]
When the support member 6 moves to a desired position, the distal end portion of the fastening member 63 is fitted into the engagement groove 61c of the annular member 61 and the free end portion of the lever 62 is attached to the annular member 61 as shown in FIG. Join. Engaging grooves 61 c of the annular member 61 are formed at two locations according to the outer diameters of the outer tube 10 and the inner tube 20 of the leg 1. Therefore, when the fastening member 63 is fixed to the outer tube 10 of the leg 1, the distal end portion of the fastening member 63 is engaged with the engagement groove 61 c on the end portion side of the annular member 61. When the fastening member 63 is fixed to the inner tube 20 of the leg 1, the distal end portion of the fastening member 63 is engaged with the engagement groove 61 c closer to the center portion of the annular member 61. As described above, the support member 6 can engage the distal end portion of the fastening member 63 with the engagement groove 61 c of the annular member 61 in accordance with the outer diameter of each of the outer tube 10 and the inner tube 20.
[0058]
When the distal end portion of the fastening member 63 is engaged with the engagement groove 61 c of the annular member 61, a force is applied so that both end portions of the annular member 61 approach each other, and the leg 1 is fastened to the annular member 61. Becomes difficult to move, and the canvas C can be placed on the flat portion 71 of the receiving portion 70. Since the flat portion 71 is horizontal in the front-rear direction and the left-right direction, the lower edge of the canvas C can be placed on the entire surface of the flat portion 71. Further, since the drop-off stopper 73 projects from the tip of the flat portion 71 on which the canvas C is placed, the canvas C does not slide down in the forward direction.
[0059]
In order to prevent the canvas C from falling down, the holding member 7 that holds the upper edge of the canvas is lowered and compacted until it comes into contact with the connector 3 in the housed state. Therefore, the pressing member 7 is raised in accordance with the size of the canvas C. In other words, the support rod 7 fixing the pressing member 7 to the top is lifted by loosening the fixing screw 35 inserted through the protruding portion 31 of the connector 3. When the pressing member 7 is raised to a desired position, the support rod 7 is fixed in a state of being held in the rectangular tube portion 33 by tightening the fixing screw 35.
[0060]
Then, the slider 90 of the pressing member 7 is protruded from the case 80 in accordance with the thickness of the canvas C. In the housed state, the slider 90 is housed in the case 80 as shown in FIG. 15, so that the fixing portion 91 is not caught on clothes or the like. Then, by pressing the push portion 93 and the knob 94, the occlusal portion 95 of the slider 90 is detached from the occlusal portion 82 of the case 80, and the slider 90 pulls the case 80 forward as shown in FIG. When the desired length corresponding to the thickness of the canvas C is pulled out, the pressing of the pressing portion 93 and the knob 94 is stopped. Then, the slider 90 is urged toward the opening 81 side of the case 80 by the elastic member 92, the engagement portion 95 of the slider 90 is engaged with the engagement portion 82 of the case 80, and the slider 90 is temporarily fixed so as not to move.
[0061]
As described above, the canvas C can be set on the picture rack according to the present invention of any size. When the picture rack is not used, the leg 1 is closed, the pressing member 7 is lowered until it comes into contact with the connector 3, and the slider 90 is retracted into the case 80, so that the picture rack can be stored compactly. it can.
[0062]
The present invention is not limited to the above-described embodiment, but can be modified within the scope of the present invention. A modification thereof will be described with reference to FIGS. However, parts corresponding to those in the above embodiment are given the same reference numerals.
[0063]
FIGS. 17 and 18 show a modification of the clamper 4 for adjusting the length of the leg 1. The clamper 4 is also composed of an outer cylinder 140 and an inner cylinder 150. The inner surface of the outer cylinder 140 forms a step, and the lower side of the inner surface is a tapered surface 141 that expands in the direction of the opening at the lower end. An annular groove 142 that opens upward is formed on the inner surface of the intermediate portion of the outer cylinder 140.
[0064]
On the other hand, the inner cylinder 150 forms a flange 151 joined to the inner surface of the outer cylinder 140 on the outer periphery of the upper end, and forms a space S between the outer periphery of the inner cylinder 150 and the inner periphery of the outer cylinder 140. A compression spring 144 is accommodated between the space S and the annular groove 142 of the outer cylinder 140. On the inner surface on the upper side of the inner cylinder 150, protrusions 152 are provided at two positions. The protrusion 152 is fitted into the small hole 14 formed in the lower portion of the outer tube 10. In order to facilitate the insertion of the outer tube 10 into the inner cylinder 150 even if the protrusions 152 exist, the upper side of the protrusions 152 forms a tapered surface.
[0065]
A window hole 153 is formed on the lower side of the inner cylinder 150. An arc-shaped piece 154 is inserted into the window hole 153. The outer periphery of the small piece 154 is a tapered surface joined to the tapered surface 141 of the outer cylinder 140. The inside of the small piece 154 forms a recessed portion, and a slip stopper 155 that joins the inner tube 20 that enters and exits from the lower end portion 11 of the outer tube 10 is fitted into the recessed portion. On the inner surface of the inner cylinder 150 on the upper side of the window hole 153 into which the small piece 154 is inserted, a protruding line 156 that abuts the lower end edge of the outer tube 10 is provided.
[0066]
The clamper 4 in the modified example as described above is attached to the leg 1 as follows. That is, first, the lower end portion of the outer tube 10 is inserted into the upper side in the inner cylinder 150. A protrusion 152 protrudes from the inner surface of the inner cylinder 150. Since the upper side of the protrusion 152 is a tapered surface, the outer tube 10 can be inserted into the inner cylinder 150 relatively easily. When the outer tube 1 is inserted to a predetermined position in the inner tube 150, the protrusion 152 of the inner tube 150 is fitted into the small hole 14 of the outer tube 10, and the lower end edge of the outer tube 10 is the ridge 156 of the inner tube 150. Abut. The inner tube 20 that is also inserted into the lower end portion of the outer tube 10 is inserted below the inner tube 150. Then, a small piece 154 fitted with a slip stopper 155 is inserted into the window hole 153 of the inner cylinder 150.
[0067]
Next, the outer cylinder 140 in which the compression spring 144 is accommodated in the annular groove 142 is externally fitted to the inner cylinder 150. The compression spring 144 contacts the flange 151 of the inner cylinder 150, and the outer cylinder 140 is urged downward. A lower inner surface of the outer cylinder 140 is a tapered surface 141, and this tapered surface 141 comes into contact with the tapered surface of the small piece 154. Therefore, when the outer cylinder 140 is urged downward by the compression spring 144, the small piece 154 is not only urged downward, but is also urged in the direction of the central axis of the inner tube 20. Then, it is possible to maintain a state in which the anti-slip 155 fitted into the small piece 154 presses and holds the inner tube 20.
[0068]
FIG. 19 shows a modification of the pressing member 7. The pressing member 7 is formed by forming a sawtooth-shaped occlusal portion 82 on the side surface of the opening 81 of the case 80. Therefore, the triangular occlusal portion 95 that meshes with the occlusal portion 82 protrudes to the side of the pressing portion 93 formed on the upper surface of the slider 90.
[0069]
Further, in the above-described embodiment, the leg 1 is composed of two pieces, the outer tube 10 and the inner tube 20, but can also be composed of three or more as shown in FIG. 20. The intermediate inner tube 21 inserted into the outer tube 10 is an outer tube with respect to the inner tube 22 on the distal end side, but is referred to as an intermediate inner tube 21 here for convenience. The lower end portion of the intermediate inner tube 21 and the inner tube 22 on the distal end side are connected by the clamper 4. The clamper 4 has an outer cylinder 40 in which an inner cylinder 50 whose lower end is expanded and contracted is inserted. The lower end of the intermediate inner tube 21 is fixed to the upper side of the inner cylinder 50, and the inner cylinder 50 is fixed. The lower end of each holds the inner tube 22 on the distal end side which is pulled out by a desired length. By rotating the outer cylinder 40, the lower end portion of the inner cylinder 50 is enlarged and reduced in diameter, and is switched between a state in which the inner tube 22 on the distal end side is not held and a state in which it is held.
[0070]
When the inner cylinder 50 of the clamper 4 fixes the lower end portion of the outer tube 10 as in the above-described embodiment, the upper end portion of the outer tube 10 is fixed to the connector 3. Even if the outer tube 40 is rotated, the outer tube 10 is not connected and rotated. However, simply inserting the intermediate inner tube 21 into the outer tube 10 allows the intermediate inner tube 21 to freely rotate within the outer tube 10. By turning the outer cylinder 40 of the clamper 4 connecting the inner pipe 22, the inner cylinder 50 and the intermediate inner pipe 21 in the inner cylinder 50 are also rotated, and the lower end portion of the inner cylinder 50 is enlarged and reduced. Can not do it.
[0071]
Therefore, as shown in FIG. 20, the intermediate inner tube 21 is formed by forming a plurality of concave strips 10a, 21a, 22a to be engaged with the outer tube 10, the intermediate inner tube 21, and the inner tube 22 on the distal end side, respectively. It is desirable not to rotate in the outer tube 10. By preventing the intermediate inner tube 21 from rotating, the inner tube 50 fixed to the inner tube 21 does not rotate even when the outer tube 40 of the clamper 4 is rotated, and the lower end portion of the inner tube 50 is expanded and contracted. The diameter can be changed between a state in which the inner tube 22 on the distal end side is not retained and a state in which the inner tube 22 is retained.
[0072]
When the leg 1 is composed of three or more legs, the engagement grooves 61c formed in the annular member 61 of the support member 6 are also formed at three or more locations according to the outer diameter of the leg 1, and It is also possible to attach the support member 6.
[0073]
【Example】
As the material of the picture frame used in the above embodiment, a light alloy such as aluminum or a hard resin can be used for the legs, and a resin such as polypropylene or ABS can be used for the other parts. In particular, since the annular member of the support member is attached to the leg by expanding both ends, elasticity is required. In addition, since the receiving portion of the support member needs to be elastically deformed so that the flat portion of the receiving portion is locked to the occlusal portion of the spherical protrusion in order to maintain the standing posture, this part is also elastic. is necessary.
[0074]
In addition, the anti-slip fitting in the concave portion on the inner side of the small piece in the above-described modification can be held without slipping the leg of the inner cylinder of the clamper by using a material having a large friction coefficient such as rubber.
[0075]
【The invention's effect】
According to the first to third aspects of the present invention, the supporting member is constituted by the C-shaped annular member and the fastening member that brings both ends of the annular member closer to each other. Also, the support member can be firmly attached.
[0076]
In particular, according to the third aspect of the present invention, the fastening member can be engaged with the annular member and the engaged state can be released only by operating the lever. It becomes easy to adjust. Accordingly, the support member can be attached to the leg at a position corresponding to the size of the canvas, which makes it easier to draw a picture and to appreciate the picture.
[0077]
Furthermore, according to the first aspect of the present invention, the support member is composed of an annular member that can be attached to a leg at an arbitrary position and a receiving portion on which the canvas is placed. It can be placed in the position. Moreover, a receiving part can be changed into the horizontal attitude | position at the time of mounting a canvas, and the standing posture at the time of accommodating. Therefore, there is no problem that clothes or the like are caught on the receiving portion when stored.
[0078]
According to the fourth aspect of the present invention, since the inner tube of the clamper holds the inner tube that has been extended from the outer tube by a desired length, the leg length can be easily adjusted. In addition, since the clamper can be operated with one hand, it is possible to adjust the length of the leg while one hand holds the canvas. Therefore, the canvas can be positioned at an optimum place.
[Brief description of the drawings]
FIG. 1 is a perspective view of a picture rack according to the present invention when used.
FIG. 2 is a front view when the picture rack according to the present invention is used.
FIG. 3 is a side view when using the picture rack according to the present invention.
FIG. 4 is a side view of a use mode different from FIG. 3 of the picture rack according to the present invention.
FIG. 5 is a perspective view of a connector constituting the picture rack according to the present invention.
FIG. 6 is an exploded perspective view of a clamper constituting the picture rack according to the present invention.
FIG. 7 is a front view when a clamper constituting the picture rack according to the present invention is loosened.
FIG. 8 is a front view when a clamper constituting the image rack according to the present invention is tightened.
FIG. 9 is a perspective view of a support member constituting the picture rack according to the present invention.
FIG. 10 is an exploded perspective view of a support member constituting the picture rack according to the present invention.
FIG. 11 is a plan view before a support member constituting the picture rack according to the present invention is fixed to a leg.
FIG. 12 is a plan view after a supporting member constituting the picture rack according to the present invention is fixed to a leg.
FIG. 13 is an exploded perspective view of a pressing member of the picture rack according to the present invention.
FIG. 14 is a perspective view of a pressing member for the picture rack according to the present invention.
FIG. 15 is a front cross-sectional view of the press member for the picture frame according to the present invention.
FIG. 16 is a plan view of a pressing member of the picture rack according to the present invention.
FIG. 17 is an exploded perspective view of a clamper showing a modification of the picture rack according to the present invention.
FIG. 18 is a cross-sectional view of a clamper showing a modification of the picture rack according to the present invention.
FIG. 19 is a partial cross-sectional perspective view of a pressing member showing a modification of the picture rack according to the present invention.
FIG. 20 is a partial cross-sectional perspective view of a leg showing a modification of the picture rack according to the present invention.
FIG. 21 is a perspective view showing a conventional support member for a picture rack.
FIG. 22 is a perspective view of a conventional support member for a picture rack in a direction different from FIG. 21.
FIG. 23 is a cross-sectional view showing a pressing member of a conventional picture rack.
[Explanation of symbols]
1 leg 4 clamper 6 support member 40 outer cylinder 44 pin 50 inner cylinder 55 slit 57 guide hole 61 annular member 61b bearing 61c engagement groove 61d spherical protrusion 62 lever 63 fastening member 70 receiving part 71 flat part 72 vertical part 72a round hole

Claims (4)

In the picture frame in which a support member is attached to a leg composed of an outer pipe and an inner pipe extending and retracting from the outer pipe,
A support member is constituted by a C-shaped annular member that fits around the leg, a fastening member that brings both ends of the annular member closer, and a receiving part .
A spherical protrusion is provided on the annular member, a flat part is formed on the receiving part on the lower surface of both sides of the flat part, and a round hole is formed in the vertical part to engage the spherical protrusion. And
A projection having a protrusion protruding on a side surface of the spherical protrusion, and the protrusion can move only within the round hole .   An engagement groove for engaging the distal end portion of the fastening member is formed at one end portion of the annular member by bending the distal end portion of the fastening member according to claim 1 and corresponding to the outer diameter of the outer tube or the inner tube. A picture rack characterized by multiple formation.   A bearing is protruded from the other end of the annular member according to claim 1, a base end of a lever is pivotally attached to the bearing, and a base end of a fastening member is pivotally attached to an intermediate portion of the lever. A picture rack characterized by that. In an articulated frame including a leg in which an outer tube and an inner tube extending and retracting from the outer tube are connected by a clamper,
The clamper is composed of an inner cylinder and an outer cylinder that move relatively in the axial direction, and a slit is formed at an end of the inner cylinder on the side where the inner pipe is fitted, and the outer circumference is expanded in a tapered shape , A guide hole is formed in the inner cylinder, and a pin that fits into the guide hole is protruded from the inner surface of the outer cylinder.
When a rotational force is applied to the outer cylinder, the pin protruding from the inner surface of the outer cylinder moves in the guide groove of the inner cylinder, the outer cylinder rotates in the vertical direction and the circumferential direction, and the inner cylinder moves inside the outer cylinder. Move in the axial direction,
When the pin is located in the guide hole near the upper end of the inner cylinder, the end on the side where the inner pipe of the inner cylinder expanded in a taper shape is externally projected from the lower end of the outer cylinder. The inner tube in the cylinder can move freely,
When the pin is located in the circumferential guide hole away from the upper end of the inner cylinder, the end of the inner cylinder on the side where the inner pipe is fitted is housed in the lower end of the outer cylinder, and the lower end A picture frame characterized in that the diameter of the part is reduced to tighten the inner tube .

Images