JP2021112581A - Support base, rotation prevention member and manufacturing method of the same - Google Patents

Abstract

To provide a support base that can be easily assembled in a short time, a rotation prevention member that prevents rotation of a support part constituting the support base, and a manufacturing method of the same.SOLUTION: A support base 10 comprises: a support part 12 having two first through holes 24; a leg part 14a having two second through holes 40; a connection member 16 having a male screw part 44 inserted into one (upper) first through hole 24 and one (upper) second through hole 40; and a rotation prevention member 18 for preventing rotation of the support part 12 around the male screw part 44. The rotation prevention member 18 has a body part 60 fixed by the connection member 16, and a pin 62 inserted into the other (lower) first through hole 24 and the other (lower) second through hole 40. The pin 62 has a contact part 70, and a contact surface 70a of the contact part 70 is brought into contact with the body part 60 and welded thereto.SELECTED DRAWING: Figure 3

Description

INDUSTRIAL APPLICABILITY The present invention includes a support base provided with a support portion that supports a support object, a leg portion that receives the load of the support portion, and a connecting member that connects the leg portion to the support portion. The present invention relates to a member and a method for manufacturing the member.

Conventionally, there is a support base in which the legs are connected by a connecting member to the support portion. For example, Patent Document 1 below discloses a desk as the support base. This desk is provided with a main body as a "support part" having a top plate and a side plate, a leg body as a "leg part" that receives the load of the main body, and a bolt as a "connecting member" that connects the leg body to the main body. ing. In this desk, each of the two legs is fixed to the body using two bolts and two nuts screwed into them. When adjusting the height of the main body of this desk, bolts and nuts are removed from the elevating holes provided on the legs, and after the height of the main body is adjusted, the bolts are inserted into other elevating holes. Is screwed into the nut.

Japanese Unexamined Patent Publication No. 2015-6251

In the desk described in Patent Document 1, in order to fix the two legs to the main body, nuts must be screwed into each of the four bolts, which causes a problem that it takes time to assemble the desk. was there. Also, for desks used in schools, it is necessary to adjust the height of the main body according to the height and taste of the child every time the grade changes, but only a large number of desks (for example, 40 desks per class) Instead, the work is concentrated in a short period of time (for example, March), so that there is a problem that the work load becomes too large.

The present invention has been made to deal with the above problems, and provides a support base that can be easily assembled in a short time, a rotation blocking member that prevents rotation of the support portion constituting the support base, and a method for manufacturing the same. The purpose is to provide.

In order to achieve the above object, the feature of the support base of the present invention is that it has two first through holes provided in the vertical direction with a space between them in the horizontal direction, and a support portion for supporting the support object. It has two second through holes corresponding to each of the two first through holes, and is inserted into a leg portion that receives the load of the support portion, one of the first through holes, and one of the second through holes. A connecting member having a rod-shaped male screw portion to be screwed and a female screw portion screwed into the male screw portion, connecting the leg portion to the support portion, and rotation of the support portion around the male screw portion. A rotation blocking member for blocking is provided, and the rotation blocking member is provided on a main body portion fixed to one of the support portion and the leg portion by the connecting member, and the other main body portion. It is to have a first through hole and a pin to be inserted into the other second through hole.

In this configuration, the male threaded portion of the connecting member is inserted into the one first through hole and the one second through hole, and the female threaded portion is screwed into the male threaded portion, so that the leg portion is attached to the support portion. It is connected. Further, a pin of a rotation blocking member is inserted into the other first through hole and the other second through hole, whereby the support portion rotates about the male screw portion with respect to the leg portion. Is blocked. Since the main body portion provided with the pin of the rotation blocking member is fixed to one of the support portion and the leg portion by the connecting member, the pin is unlikely to fall out from the other first through hole and the other second through hole. .. It is sufficient that at least two first through holes and two second through holes are formed, and the number is not limited to two.

In this configuration, since the pin of the rotation blocking member is inserted into the other first through hole and the other second through hole, it is not necessary to insert the male screw portion. Therefore, it is possible to save the trouble of screwing the male threaded portion into the female threaded portion, and the support base can be easily assembled in a short time.

Another feature of the present invention is that when the pair of the two first through holes is the first set and the set of the two second through holes is the second set, the first set and the second set One is that a plurality of them are provided so as to be offset in the vertical direction so that they can be accommodated at different heights with respect to the other.

In this configuration, the height of the support can be adjusted. For example, when a plurality of first sets are provided on the support portion, the height of the support portion can be adjusted by making the second set provided on the legs correspond to one selected from the plurality of first sets. Can be adjusted. On the other hand, when a plurality of second sets are provided on the legs, the height of the support portion is increased by making the first set provided on the support portion correspond to one selected from the plurality of second sets. Can be adjusted. Further, in this configuration, the number of connecting members can be halved as compared with the prior art disclosed in Patent Document 1, so that the work load of the height adjustment work can be significantly reduced.

Another feature of the present invention is that the main body portion has a through hole through which the male screw portion is inserted, and the male screw portion has a head portion that comes into contact with the main body portion. be.

In this configuration, the main body portion can be pressed and fixed to one of the support portion and the leg portion by the head of the male screw portion.

Another feature of the present invention is that the gap width between the support portion and the leg portion at the height of the first through hole on the upper side is defined as the upper gap width, and the support at the height of the first through hole on the lower side. When the gap width between the portion and the leg portion is the lower gap width and the upper gap width is wider than the lower gap width, the first through hole on the upper side and the second through hole on the upper side are covered. When the male screw portion is inserted and the lower gap width is wider than the upper gap width, the male screw portion is inserted into the first through hole on the lower side and the second through hole on the lower side.

In this configuration, the upper gap width and the lower gap width are compared, and when the upper gap width is wide, the male screw portion is arranged on the upper side and the pin is arranged on the lower side. On the other hand, when the lower gap width is wide, the male screw portion is arranged on the lower side and the pin is arranged on the upper side. That is, on the side where the gap width is wide, the legs are brought into close contact with the support portion by the connecting member and connected. Therefore, the gap between the support portion and the leg portion can be effectively eliminated.

In order to achieve the above object, the feature of the present invention is to have two first through holes provided in the vertical direction with a space between them in the horizontal direction, and a support portion for supporting the support object and two above-mentioned parts. It has two second through holes corresponding to each of the first through holes, and has a leg portion that receives the load of the support portion, and a rod shape that is inserted into one of the first through holes and one of the second through holes. In a support base having a male screw portion and a female screw portion screwed into the male screw portion and a connecting member for connecting the leg portion to the support portion, the rotation of the support portion centered on the male screw portion. A rotation blocking member for blocking movement, which is a main body portion fixed to one of the support portion and the leg portion by the connecting member, and the first penetrating member provided on the main body portion and the other. It is to have a hole and a pin to be inserted into the other second through hole.

In the support base, the male threaded portion of the connecting member is inserted into the one first through hole and the one second through hole, and the female threaded portion is screwed into the male threaded portion, so that the leg portion is attached to the support portion. It is connected. The pins of the rotation blocking member are inserted into the other first through hole and the other second through hole. This makes it possible to prevent the support portion from rotating around the male screw portion. Since the main body portion provided with the pin of the rotation blocking member is fixed to one of the support portion and the leg portion by the connecting member, the pin is unlikely to fall out from the other first through hole and the other second through hole.

Further, even if the male threaded portion is inserted into the other first through hole and the other second through hole at the time of factory shipment of the support base, the male threaded portion may loosen and fall off due to long-term use. In this case, the support base can be easily repaired in a short time by using the rotation blocking member instead of the male screw portion that has fallen off.

Another feature of the present invention is that the pin is arranged in a first portion arranged inside each of the other first through hole and the other second through hole, and from the tip end portion of the first portion to the other side. It has a second portion provided so as to extend, and the diameter of the second portion is made smaller than the diameter of the first portion.

In this configuration, the diameter of the second portion is smaller than the diameter of the first portion, so when inserting the pin into the first through hole and the second through hole, the second portion having a small diameter is used as a guide. Can be easily inserted. Therefore, it is possible to narrow the width of the gap between the outer surface of the first portion and the inner surface of each of the first through hole and the second through hole, and it is possible to suppress the rattling of the pin due to this gap.

Another feature of the present invention is that the main body portion has a through hole through which the male screw portion is inserted, and the male screw portion has a head portion that comes into contact with the main body portion. be.

In this configuration, the main body portion can be pressed and fixed to one of the support portion and the leg portion by the head of the male screw portion.

Another feature of the present invention is the method for manufacturing the rotation blocking member, wherein (a) the main body portion having a pin insertion hole is formed by processing a metal plate material having a constant thickness, and (b). ) By processing a metal rod, the pin having a pin main body inserted into the pin insertion hole and an abutting portion abutting on one surface of the main body portion is formed, and (c) the main body. The purpose is to insert the pin main body into the pin insertion hole from one side of the portion and to weld the contact portion to one surface of the main body portion.

In this configuration, the rotation blocking member can be easily manufactured by the metal plate material and the metal bar material.

Another feature of the present invention is that in the step (b), the contact surface of the contact portion that comes into contact with one surface of the main body portion is formed perpendicular to the pin main body.

In this configuration, the pin body can be arranged perpendicularly to the other surface of the main body only by welding the contact surface of the contact portion to one surface of the main body.

It is a perspective view which shows the structure of the support base which concerns on one Embodiment of this invention. It is an enlarged perspective view which shows the structure of the main part of the support stand shown in FIG. It is an enlarged cross-sectional view which shows the structure of the main part of the support stand shown in FIG. It is a figure which shows the structure of the rotation blocking member which concerns on one Embodiment of this invention, (A) is a left side view, (B) is a front view, (C) is a right side view. It is an exploded perspective view which shows the structure of the rotation blocking member which concerns on one Embodiment of this invention. It is sectional drawing which shows the method of fixing a leg part to a support part. It is sectional drawing which shows the use method of the rotation blocking member with respect to the conventional support base.

Hereinafter, embodiments of a support base, a rotation blocking member, and a method for manufacturing the same according to the present invention will be described with reference to the drawings. The "front, rear, left, right, up, and down" directions used in the following description correspond to the directions indicated by the arrows in FIG.

(Structure of support base 10)
FIG. 1 is a perspective view showing a configuration of a support base 10 according to an embodiment of the present invention. FIG. 2 is an enlarged perspective view showing the configuration of a main part of the support base 10. FIG. 3 is an enlarged cross-sectional view showing the configuration of a main part of the support base 10. Since the support base 10 of the present embodiment is symmetrically configured, the description will be given below mainly focusing on the left side portion of the support base 10.

As shown in FIG. 1, the support base 10 is a desk for children used in a classroom of a school or the like, and corresponds to a support portion 12, a pair of left and right legs 14a and 14b, and each leg portion 14a and 14b. 16 is provided, and a rotation blocking member 18 is provided corresponding to each of the leg portions 14a and 14b.

As shown in FIG. 1, the support portion 12 is a portion that supports a support object (not shown) such as a textbook or a notebook, and is provided on the top plate 20 and extending downward from both ends of the top plate 20 in the left-right direction. It has two hanging portions 22a and 22b. As shown in FIG. 2, a plurality of (11 in this embodiment) first through holes 24, 24 ... Are directed in the horizontal direction (horizontal direction) at regular intervals in the vertical direction in the hanging portion 22a. Is provided.

As shown in FIG. 3, when connecting the leg portion 14a to the support portion 12 using the connecting member 16, a plurality of first penetrations are made according to the height of the top plate 20 (FIG. 1) desired by the child. Two first through holes 24, 24 are selected from the holes 24, 24 .... In the present embodiment, when one first through hole 24 is selected, the second one is automatically selected as the other first through hole 24, counting downward from the first through hole 24. Therefore, as shown in FIG. 2, assuming that the set of the two selectable first through holes 24, 24 is the first set 26, the support portion 12 (hanging portion 22a) has a total of nine first sets 26. Is provided so as to be offset in the vertical direction.

As shown in FIG. 1, each of the leg portions 14a and 14b is a portion that receives the load of the support portion 12, and has rod-shaped columns 30 and 30 extending in the vertical direction. Each of the columns 30 and 30 is formed in a pipe shape having a quadrangular cross section, and is connected to each other via a rod-shaped connecting portion 32 extending in the left-right direction.

As shown in FIG. 3, at the upper end portion 30a of the support column 30, the right wall portion 36 is crushed to the left and overlapped with the left wall portion 38. Two second through holes 40, 40 are provided in the upper end portion 30a in the horizontal direction (horizontal direction) with an interval in the vertical direction. The distance between the two second through holes 40, 40 is defined to be the same as the distance between the two first through holes 24, 24 constituting the first set 26 provided in the support portion 12. Therefore, assuming that the pair of the two second through holes 40, 40 is the second set 42, the second set 42 is one first set selected from a plurality of (nine in this embodiment) first set 26. Corresponds to 26.

As shown in FIG. 3, when the second set 42 corresponds to one selected first set 26, the first set through hole 24 and the second set 42 are configured while forming the first set 26 (upper side). One (upper side) second through hole 40 is communicated with, and the other (lower side) forming the first set 26 and the other (lower side) forming the second set 42. The second through hole 40 is communicated with.

As shown in FIG. 3, the connecting member 16 is screwed into the male threaded portion 44 having a rod shape inserted into the first through hole 24 on one side (upper side) and the second through hole 40 on the other side (upper side). It has a female screw portion 46 to be formed. The male screw portion 44 has a male screw main body 48 in which a male screw 48a is formed on an outer peripheral surface, and a head 50 provided at a base end portion of the male screw main body 48. The head 50 has a hexagon wrench (not shown). A hexagonal hole 52 into which (omitted) is inserted is provided.

The female screw portion 46 has a female screw main body 54 in which a female screw 54a is formed on an inner peripheral surface, and a bag portion 56 that covers one opening of the female screw main body 54. That is, the female thread portion 46 of the present embodiment is a so-called “bag nut”. In the present embodiment, the two female screw portions 46, 46 are welded to the inner peripheral portions of the two second through holes 40, 40 provided in the upper end portion 30a of the support column 30. As a result, the space inside each female screw portion 46 communicates with the corresponding second through hole 40.

(Structure of rotation blocking member 18)
4A and 4B are views showing the configuration of a rotation blocking member 18 according to an embodiment of the present invention, in which FIG. 4A is a left side view, FIG. 4B is a front view, and FIG. 4C is a right side view. FIG. 5 is an exploded perspective view showing the configuration of the rotation blocking member 18. The rotation blocking member 18 shown in FIG. 3 blocks the rotation of the support portion 12 centering on the male screw portion 44, and has a main body portion 60 fixed to the support portion 12 by the connecting member 16 and a first penetration. It has a hole 24 and a pin 62 to be inserted into the second through hole 40. The main body 60 and the pin 62 are made of a metal such as iron and stainless steel so that they can be welded to each other.

As shown in FIGS. 4A, 4B, and 4C, the main body 60 is a plate-shaped member having a certain thickness and formed long in the vertical direction. The front-rear side edges 60a and 60b of the main body 60 are formed in a straight line extending in the vertical direction, and the vertical side edges 60c and 60d of the main body 60 are formed in an arc shape bulging outward. .. The left and right side surfaces 60e and 60f of the main body 60 are formed on smooth flat surfaces.

As shown in FIG. 5, a circular through hole 64 through which the male screw portion 44 of the connecting member 16 (FIG. 3) is inserted is formed in the central portion in the front-rear direction in the upper portion of the main body portion 60. A circular pin insertion hole 66 through which the pin 62 is inserted is formed in the central portion in the front-rear direction in the lower portion of the main body portion 60. Further, as shown in FIG. 4A, around the through hole 64 on one surface (left side surface) 60e of the main body 60, the character “up” indicating the proper orientation of the main body 60 and the male screw portion 44 An arrow indicating the direction of turning and the characters "Shimaru" and "Yurum" indicating the effect of turning the male screw portion 44 are described.

As shown in FIG. 5, the pin 62 includes a columnar pin body 68 inserted into the pin insertion hole 66 and a disk-shaped contact portion 70 provided with an enlarged diameter from the base end portion of the pin body 68. have. The pin body 68 has a columnar first portion 68a arranged inside each of the lower first through hole 24 and the lower second through hole 40 (FIG. 3), and the tip portion of the first portion 68a. It has a second portion 68b that extends from the side to the other side. The outer diameter of the first portion 68a is formed to have a thickness that is slightly narrower than the inner diameters of the first through hole 24 and the second through hole 40. Further, although the outer diameter of the second portion 68b is formed to be smaller than the diameter of the first portion 68a, the gap fitting of the first portion 68a with respect to the inner diameter of the female screw portion 46 (first through hole 24 and It is formed to have the same thickness as the gap fitting (gap) with respect to the second through hole 40).

The contact portion 70 is formed with a contact surface 70a that is in contact with one surface (left side surface) 60e of the main body portion 60, and a plurality of contact surfaces 70a that are melted during welding (this implementation). In the embodiment, three) protrusions 74 are formed at a constant angular interval (120 degrees in the present embodiment) in the circumferential direction. The contact surface 70a is formed on a flat surface perpendicular to the pin body 68. Therefore, when the contact surface 70a is brought into contact with one surface (left surface) 60e of the main body 60 and welded, the angle formed by the other surface (right surface) 60f of the main body 60 and the pin body 68 is inevitable. It becomes 90 degrees.

(Manufacturing method of rotation blocking member 18)
As shown in FIG. 5, when manufacturing the rotation blocking member 18, first, a main body having a through hole 64 and a pin insertion hole 66 by processing a metal plate material (not shown) having a certain thickness. The part 60 is formed. Further, a pin 62 having a pin body 68 and an abutting portion 70 is formed by processing a metal rod (not shown). Subsequently, the pin main body 68 is inserted into the pin insertion hole 66 from the one side 60e side of the main body 60, and the contact surface 70a of the contact portion 70 is brought into contact with the one side 60e of the main body 60. After that, the contact surface 70a of the contact portion 70 and one surface 60e of the main body portion 60 are joined by projection welding. In the projection welding, since the plurality of protrusions 74 provided on the contact surface 70a are melted, the contact surface 70a of the contact portion 70 can be joined to the one surface 60e of the main body portion 60 without a gap.

(Assembly method of support base 10)
FIG. 6 is a cross-sectional view showing a method of fixing the leg portion 14a to the support portion 12. When assembling the support base 10 shown in FIG. 1, first, the support portion 12 and the two leg portions 14a and 14b are separately prepared, and the two leg portions 14a and 14b are connected by the connecting portion 32. When the two legs 14a and 14b are connected by the connecting portion 32, it is desirable that the two columns 30 and 30 extend in the vertical direction and become parallel to each other. However, in reality, the two columns 30, 30 tend to tilt toward the center in the left-right direction as they move upward due to various conditions.

When the connection of the two legs 14a and 14b is completed, as shown in FIG. 6, the support column 30 of the legs 14a is arranged inside (right side) in the left-right direction of the hanging portion 22a constituting the support portion 12. As described above, since the support column 30 is tilted toward the center side (right side) in the left-right direction as it goes upward, the width of the gap 76 generated between the support portion 12 and the leg portion 14a becomes wider as it goes upward. .. Therefore, when the width of the gap 76 at the height of the upper first through hole 24 is the upper gap width W1 and the width of the gap 76 at the height of the lower first through hole 24 is the lower gap width W2, The upper gap width W1 is wider than the lower gap width W2.

When the positioning of the leg portion 14a with respect to the support portion 12 is completed, the leg portion 14a is fixed to the support portion 12 as shown in FIG. When fixing the leg portion 14a to the support portion 12, first, the main body portion 60 of the rotation blocking member 18 is arranged on the side surface 12a of the supporting portion 12, and the pin 62 of the rotation blocking member 18 is placed on the lower side. It is inserted through the first through hole 24 and the lower second through hole 40. Since the diameter of the second portion 68b of the pin 62 is smaller than the diameter of the first portion 68a, the pin 62 (pin body 68) is placed in the lower first through hole 24 and the lower second through hole 40. The small diameter second portion 68b serves as a guide when the second portion 68b is inserted into the hole.

Subsequently, the male threaded portion 44 is inserted into the through hole 64 of the rotation blocking member 18, the upper first through hole 24, and the upper second through hole 40, and the male threaded portion 44 is screwed into the female threaded portion 46. Then, the support portion 12 and the leg portion 14a are brought into close contact with each other by the tightening force between the male screw portion 44 and the female screw portion 46. At this time, the main body 60 of the rotation blocking member 18 is pressed against the support 12 by the head 50 of the male screw 44 and fixed.

(Other usage of rotation blocking member 18)
FIG. 7 is a cross-sectional view showing how to use the rotation blocking member 18 with respect to the conventional support base 80. The conventional support base 80 shown in FIG. 7 has a support portion 82 and a leg portion 84a, and the support portion 82 and the leg portion 84a are connected to each other by two connecting members 86, 86. In this conventional support base 80, the rotation of the support portion 82 centered on the upper male screw portion 88 is blocked by the lower connecting member 86.

In the conventional support base 80 shown in FIG. 7, when adjusting the height of the support portion 82, it is necessary to remove the two connecting members 86, 86, but after adjusting the height of the support portion 82, On the other hand (lower side in FIG. 7), the rotation blocking member 18 of the above embodiment may be used instead of the connecting member 86. In this case, as shown by the alternate long and short dash line in FIG. 7, the pin 62 of the rotation blocking member 18 is inserted into the lower first through hole 90 and the lower second through hole 92. Further, the male threaded portion 88 of the connecting member 86 is inserted into the through hole 64 of the rotation blocking member 18, the upper first through hole 90, and the upper second through hole 92, and is screwed into the female threaded portion 94.

As described above, even in the conventional support base 80, the work load of the height adjusting work can be significantly reduced by using the rotation blocking member 18.

Further, in the conventional support base 80 shown in FIG. 7, when one of the two connecting members 86, 86 is loosened and falls off, the rotation blocking member 18 may be used instead of the fallen connecting member 86. good. In this case, the support base 80 can be easily repaired by the rotation blocking member 18.

(effect)
According to the present embodiment, the following effects can be achieved by the above configuration. That is, as shown in FIG. 3, it is not necessary to insert the male threaded portion 44 into the lower first through hole 24 and the lower second through hole 40, and the male threaded portion 44 is screwed into the female threaded portion 46. Since the labor can be saved, the support base 10 can be easily assembled in a short time.

As shown in FIG. 3, since the main body 60 provided with the pin 62 in the rotation blocking member 18 is fixed to the support 12 by the connecting member 16, the pin 62 has the first through hole 24 and the second through hole. It is hard to drop out from 40.

As described above, when the pin 62 is inserted into the first through hole 24 and the second through hole 40, it can be easily inserted by using the second portion 68b having a small diameter as a guide. Therefore, the width of the gap between the outer surface of the first portion 68a and the inner surface of each of the first through hole 24 and the second through hole 40 can be narrowed, and the rattling of the pin 62 due to this gap can be suppressed.

Since the outer diameter of the second portion 68b is formed to have the same clearance fitting (gap) as the gap fitting of the first portion 68a with respect to the inner diameter of the female screw portion 46, the first portion 68a and the second portion 68a and the second portion 68b are formed. The portion 68b can be brought into contact with the inner peripheral surfaces of the first through hole 24, the second through hole 40, and the female thread portion 46 at the same time, and the contact surface pressure can be dispersed to prevent damage to each contact portion.

As shown in FIG. 3, when the set of the two first through holes 24 is the first set 26 and the set of the two second through holes 40 is the second set 42, the first set 26 is the second set. A plurality of 42 are provided so as to be able to correspond to different heights by shifting them in the vertical direction (FIG. 2). Therefore, the height of the support portion 12 can be adjusted by associating the second set 42 with one selected from the plurality of first sets 26.

As shown in FIG. 6, the upper gap width W1 and the lower gap width W2 are compared, and the first through hole 24 and the second through hole 40 corresponding to the wider upper gap width W1 have a male screw portion 44. Is inserted. Then, the male screw portion 44 is screwed into the female screw portion 46, so that the leg portion 14a is connected to the support portion 12. Therefore, the support portion 12 and the leg portion 14a can be reliably brought into close contact with each other, and the gap 76 between the support portion 12 and the leg portion 14a can be effectively eliminated.

As shown in FIG. 3, the main body 60 of the rotation blocking member 18 has a through hole 64 through which the male screw portion 44 is inserted, and the male screw portion 44 has a head 50 that comes into contact with the main body 60. Therefore, the head 50 of the male screw portion 44 can press the main body portion 60 against the support portion 12 to fix the main body portion 60.

As shown in FIG. 5, the rotation blocking member 18 can be easily manufactured by the main body portion 60 made of a metal plate material and the pin 62 made of a metal rod material. Further, since the contact surface 70a of the contact portion 70 is formed perpendicular to the pin body 68, the pin body 68 can be formed by simply welding the contact surface 70a to one surface 60e of the main body 60. It can be arranged perpendicular to the other surface 60f of the 60.

(Modification example)
The implementation of the present invention is not limited to the above-described embodiment, and various changes can be made as long as the object of the present invention is not deviated. For example, in the above embodiment, the support base 10 shown in FIG. 1 is configured as a desk that supports an object (textbook, notebook, etc.), but the support base may be configured as a chair that supports a person (not shown). good.

As shown in FIG. 3, in the above embodiment, the two female threaded portions 46, 46 are welded to the upper end portion 30a of the support column 30 constituting the leg portion 14a, but the female threaded portions 46, 46 are the leg portions 14a. It may be provided independently of. Further, the female screw portion 46 on the side where the pin 62 is inserted may be omitted.

As shown in FIG. 3, in the above embodiment, the through hole 64 is formed in the main body 60 of the rotation blocking member 18, but instead of the through hole 64, a U-shaped or V-shaped recess (not shown). Omitted) may be formed on the outer peripheral edge of the main body 60. Even in this case, by arranging the concave portion around the male screw main body 48, the main body portion 60 can be pressed against the support portion 12 by the head 50 and fixed.

As shown in FIG. 5, in the above embodiment, the pin body 68 is formed in a rod shape having a first portion 68a and a second portion 68b having different outer diameters, but the pin body 68 has a constant outer length over the entire length. It may be configured in the shape of a rod having a diameter, or may be configured in the shape of a rod whose outer diameter gradually decreases toward the tip.

Further, when the pin body 68 has the first portion 68a and the second portion 68b having different outer diameters, the outer diameter of the second portion 68b is fitted into the gap of the first portion 68a with respect to the inner diameter of the female screw portion 46. By forming the thickness so that it fits in a larger gap, it is possible to avoid contact of the female screw portion 46 with the inner peripheral surface and prevent damage to the female screw portion 46. Further, the pin body 68 is formed to have a thickness that makes the outer diameter of the second portion 68b smaller than the gap fit of the first portion 68a with respect to the inner diameter of the female screw portion 46, thereby allowing the pin body 68 to penetrate the first portion. It is also possible to prevent damage to the first through hole 24 and the second through hole 40 by avoiding contact of the hole 24 and the second through hole 40 with each inner peripheral surface.

The rotation blocking member 18 shown in FIG. 3 may be arranged upside down. That is, the male screw portion 44 of the connecting member 16 is inserted into the lower first through hole 24 and the lower second through hole 40, and the upper first through hole 24 and the upper second through hole 40 The pin 62 of the rotation blocking member 18 may be inserted through the shaft. In particular, when the lower gap width W2 is wider than the upper gap width W1, the gap 76 between the support portion 12 and the leg portion 14a is effectively created by turning the rotation blocking member 18 upside down. Can be resolved.

As shown in FIG. 3, in the above embodiment, the main body 60 of the rotation blocking member 18 is fixed to the support 12 by the connecting member 16, but the main body 60 is fixed to the leg 14a by the connecting member 16. May be done. In this case, since the rotation blocking member 18 is arranged on the side of the leg portion 14a, the female screw portion 46 is arranged on the side of the support portion 12.

As shown in FIG. 3, in the above embodiment, a plurality of first set 26, which is a set of two first through holes 24 provided in the support portion 12, are provided so as to be displaced in the vertical direction. Therefore, a plurality of second sets 42, which are a set of two second through holes 40 provided in the leg portion 14a, may be provided so as to be displaced in the vertical direction.

10 ... Support base, 12 ... Support part, 14a, 14b ... Leg part, 16 ... Connection member,
18 ... Rotation blocking member, 24 ... First through hole, 26 ... First set, 40 ... Second through hole,
42 ... 2nd set, 44 ... male threaded part, 46 ... female threaded part, 50 ... head, 60 ... main body part,
62 ... Pin, 64 ... Through hole, 66 ... Pin insertion hole, 70 ... Contact portion, 70a ... Contact surface.

Another feature of the present invention is that the pin has an abutting portion that comes into contact with one surface of the main body portion .

In these cases, when the set of the two first through holes is the first set and the set of the two second through holes is the second set, one of the first set and the second set is the other. It is possible to provide a plurality of them by shifting them in the vertical direction so that they can be accommodated at different heights. In this configuration, the height of the support can be adjusted. For example, when a plurality of first sets are provided on the support portion, the height of the support portion can be adjusted by making the second set provided on the legs correspond to one selected from the plurality of first sets. Can be adjusted. On the other hand, when a plurality of second sets are provided on the legs, the height of the support portion is increased by making the first set provided on the support portion correspond to one selected from the plurality of second sets. Can be adjusted. Further, in this configuration, the number of connecting members can be halved as compared with the prior art disclosed in Patent Document 1, so that the work load of the height adjustment work can be significantly reduced.

In these cases, the body portion has a through hole into which the male screw portion is inserted, the male screw portion may have a head is brought into contact with the main body portion.

In these cases , the gap width between the support portion and the leg portion at the height of the first through hole on the upper side is defined as the upper gap width, and the support portion and the leg at the height of the first through hole on the lower side. When the gap width with the portion is the lower gap width and the upper gap width is wider than the lower gap width, the male screw portion is inserted into the first through hole on the upper side and the second through hole on the upper side. When the lower gap width is wider than the upper gap width, the male screw portion may be inserted into the lower first through hole and the lower second through hole.

In order to achieve the above object, the feature of the present invention is to have two first through holes provided in the vertical direction with a space between them in the horizontal direction, and a support portion for supporting the support object and two above-mentioned parts. It has two second through holes corresponding to each of the first through holes, and has a leg portion that receives the load of the support portion, and a rod shape that is inserted into one of the first through holes and one of the second through holes. In a support base having a male screw portion and a female screw portion screwed into the male screw portion and a connecting member for connecting the leg portion to the support portion, the rotation of the support portion centered on the male screw portion. A rotation blocking member for blocking movement, which is a main body portion fixed to one of the support portion and the leg portion by the connecting member, and the first penetrating member provided on the main body portion and the other. have a pin that is inserted into the hole and the other of the second through-hole, the pin is to have a contact portion which is brought into contact with one surface of the main body portion.

In these cases, the pin is provided with a first portion arranged inside each of the other first through hole and the other second through hole, and extending from the tip of the first portion to the front. The diameter of the second portion may be smaller than the diameter of the first portion.

In these cases , the main body portion may have a through hole through which the male screw portion is inserted, and the male screw portion may have a head portion that comes into contact with the main body portion.

In these cases , in the method for manufacturing the rotation blocking member, (a) the main body having a pin insertion hole is formed by processing a metal plate having a constant thickness, and (b) is made of metal. By processing the bar material, the pin having a pin main body inserted into the pin insertion hole and an abutting portion abutting on one surface of the main body portion is formed, and (c) one surface of the main body portion is formed. The pin body can be inserted into the pin insertion hole from the side, and the contact portion can be welded to one surface of the body portion.

In these cases , in the step (b), the contact surface of the contact portion that comes into contact with one surface of the main body portion can be formed perpendicular to the pin main body.

Claims (9)

A support portion that has two first through holes provided in the horizontal direction with a vertical spacing and supports the support target, and a support portion.
A leg having two second through holes corresponding to each of the two first through holes and receiving a load of the support portion,
A connection having a rod-shaped male screw portion inserted into one of the first through holes and one of the second through holes and a female screw portion screwed into the male screw portion, and connecting the leg portion to the support portion. Members and
A rotation blocking member that prevents the support portion from rotating around the male screw portion is provided.
The rotation blocking member is
A main body portion fixed by the connecting member to one of the support portion and the leg portion, and
A support base provided in the main body and having the other first through hole and the pin inserted into the other second through hole. When the set of the two first through holes is the first set and the set of the two second through holes is the second set,
The support according to claim 1, wherein one of the first set and the second set is provided so as to be offset in the vertical direction so as to correspond to the other at different heights. The main body portion has a through hole through which the male screw portion is inserted.
The support base according to claim 1 or 2, wherein the male screw portion has a head portion that comes into contact with the main body portion. The gap width between the support portion and the leg portion at the height of the first through hole on the upper side is defined as the upper gap width, and the gap between the support portion and the leg portion at the height of the first through hole on the lower side. When the width is the lower clearance width,
When the upper gap width is wider than the lower gap width, the male screw portion is inserted into the first through hole on the upper side and the second through hole on the upper side.
According to any one of claims 1 to 3, when the lower gap width is wider than the upper gap width, the male screw portion is inserted into the first through hole on the lower side and the second through hole on the lower side. Described support stand. A support portion that has two first through holes provided in the horizontal direction with a vertical spacing and supports the support target, and a support portion.
A leg having two second through holes corresponding to each of the two first through holes and receiving a load of the support portion,
A connection having a rod-shaped male screw portion inserted into one of the first through holes and one of the second through holes and a female screw portion screwed into the male screw portion, and connecting the leg portion to the support portion. A rotation blocking member for blocking the rotation of the support portion centered on the male screw portion in a support base including the member.
A main body portion fixed by the connecting member to one of the support portion and the leg portion, and
A rotation blocking member provided in the main body and having the other first through hole and the pin inserted into the other second through hole. The pin has a first portion arranged inside each of the other first through hole and the other second through hole, and a second portion extending forward from the tip of the first portion. And have
The rotation blocking member according to claim 5, wherein the diameter of the second portion is smaller than the diameter of the first portion. The main body portion has a through hole through which the male screw portion is inserted.
The rotation blocking member according to claim 5 or 6, wherein the male screw portion has a head portion that comes into contact with the main body portion. The method for manufacturing a rotation blocking member according to any one of claims 5 to 7.
(A) The main body having a pin insertion hole is formed by processing a metal plate having a certain thickness.
(B) By processing a metal rod, the pin having a pin main body inserted into the pin insertion hole and an abutting portion abutting on one surface of the main body portion is formed.
(C) A method for manufacturing a rotation blocking member, in which the pin body is inserted into the pin insertion hole from one side of the main body and the contact portion is welded to one surface of the main body. The method for manufacturing a rotation blocking member according to claim 8, wherein in the step (b), the contact surface of the contact portion that comes into contact with one surface of the main body portion is formed perpendicular to the pin main body. ..

Images