JP3018037U - Folding leg support - Google Patents

Abstract

(57) [Summary] [Object] To provide a folding supporter for a leg, which is easy to assemble and can maintain a balanced distribution of forces during use to eliminate a biased force. In a supporting leg support tool in which a supporting leg 5 is pivotally attached to a supporting leg connecting piece 2 formed on a main body 1 by a shaft member 41, a supporting leg 5 can be undulated on an opposite side of the supporting leg connecting piece 2 of the main body 1. Forming a wide receiving space portion 10 and receiving space portion 1
A shaft member 41 in which a reinforcing piece 8 is integrally erected at a position separated from the supporting leg connecting piece 2 via 0, and the supporting leg 5 is laterally provided between the supporting leg connecting piece 2 and the reinforcing piece 8 in the receiving space portion 10. Folding configured so that the shaft member 41 is blocked by the escape prevention member 7 attachable to the side facing the receiving space 10 via the support leg connecting piece 2 in the disengagement direction. Type support for foot support.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support for a foldable support leg.

[0002]

[Prior art]

 Conventionally, a folding structure that is convenient to carry and store requires a supporting leg support that plays a role of supporting the supporting legs of the folding structure and connecting them to each other. A supporting leg support having a number of shapes and functions depending on the type of method is disclosed.

13 to 15 show a typical example of such a conventional supporting leg support. In this support leg support, a support leg connecting piece 2 in which a connecting shaft hole 3 is formed is integrally formed in a support disk-shaped main body 1, and a shaft member 4 such as a rivet is provided on one side of the support leg connecting piece 2. It is inserted through the shaft hole 5a provided in the supporting leg 5 and is pivotally attached. In order to reduce the production cost, the supporting leg support which is applied to the lower part of the main body and the support connecting device which is applied to the upper part of the main body are connected. A connecting hole 6 for a vertical support leg support is formed integrally with the support leg connecting piece 2 so as to be compatible with each other without being constrained by a part.

In such a conventional supporting leg support, the angle between the supporting leg connecting pieces 2 and the number of supporting leg connecting pieces 2 to be formed are determined by the size of the supporting legs attached to the connecting shafts, etc. There is a limit to the number of the main body 1 that can be formed depending on the size of the main body 1, and 2 to 4 or less are common. Of these, the number of formed pieces is two and the angles between them are right angles or acute angles within the right angles in most cases. In rare cases, the angles between the support leg connecting pieces 2 are more than right angles due to the necessity of application. Sometimes, it's not common.

[0005]

[Problems to be solved by the device]

 In the conventional supporting leg support, regardless of whether the supporting leg support is applied to the upper support connecting tool or the lower supporting supporter, the supporting leg connecting piece forming the supporting foot supporting tool is used. In the process of connecting the supporting leg 5 having the shaft hole 5a on one side to the connecting shaft hole 3 provided in 2 by the shaft member 4, the head portion of the shaft member 4 is moved to the outside in order to ensure the reliability of the product. Finishing work in a narrow space surrounded by two supporting leg connecting pieces 2 inserted so as to be positioned, that is, finishing work of crushing the end of the shaft member 4 by pressing to form a locking end portion. It must be made. It is very difficult to finish the shaft member 4 in a narrow space surrounded by the two support leg connecting pieces 2. If a worker is allowed to perform this finishing process, an accident or the like may be caused and a safety problem may occur. there were.

The difficulty in finishing the shaft member 4 in such an assembly is caused by the assembly process in which a large number of supporting leg support members must be connected to one folding structure, and as a result, it is difficult to complete the assembly. It has a serious problem that it causes a huge delay in the work time to reach the end and reduces productivity. Further, in such a conventional supporting leg support, a drawback pointed out is that since each supporting leg 5 is pivotally supported by the shaft member 4 on one side of the supporting leg connecting piece 2, the supporting leg 5 is supported by the shaft member 4. When the folding structure is used by expanding with the axis as the axis, the weight of the person is directly transmitted to the connecting shaft hole 3 and the stress is concentrated on this part, and when the supporting leg connecting piece 2 is made of synthetic resin, The phenomenon in which the peripheral portion of the connecting shaft hole 3 is deformed or a crack is generated in the peripheral portion and the undulating motion of the supporting leg 5 causes rattling or deviation so that the supporting leg support is lifted from the ground. However, it has a problem of lacking stability in supporting things.

Further, the shaft member 4 bends due to the shear stress generated between the supporting leg 5 and the supporting leg connecting piece 2 as the connecting shaft hole 3 expands, so that the folding operation becomes incomplete. Due to the various problems mentioned above, there is a drawback that the overall life of the folded structure is shortened. The present invention has been made in view of the above problems of the related art. A first object of the present invention is to support a foldable support leg that facilitates the assembly work of the fulcrum constituting the folding structure. To provide the ingredients.

A second object of the present invention is to equilibrate the distribution of the load associated with the use of the supporting legs constituting the folding structure after assembly and eliminate the load bias, thereby eliminating the peripheral portion of the connecting shaft hole. It is intended to provide a folding supporter for a foldable leg that is highly convenient and safe by preventing the deformation of the supporter and the bending of the shaft member, and eliminating the phenomenon that the supporter is raised from the ground.

[0009]

[Means and Actions for Solving the Problems]

 In order to achieve the above-mentioned object, the folding supporting leg support of the present invention is a supporting leg connecting member formed on the main body, wherein the supporting leg is pivotally attached by a shaft member. On the opposite side, a supporting space forms a receiving space that allows the supporting legs to undulate, and a reinforcing piece is integrally erected at a position separated from the supporting leg connecting piece through the receiving space, and the supporting leg is receiving space. Is pivotally attached by a shaft member provided on the supporting leg connecting piece and the reinforcing piece, and the removal direction is blocked by the escape prevention member provided on the side facing the receiving space through the supporting leg connecting piece. It is characterized by doing so. In the folding-type supporting leg support thus configured, the load is evenly distributed when the shaft member is pivotally attached to the supporting leg connecting piece and the reinforcing piece. Further, the side surface of the escape prevention member that is finally mounted serves as a barrier to block the disengagement direction of the shaft member. Further, according to the present invention, the shaft member of the supporting device for the foldable supporting leg is characterized in that the shaft member is a stepped shaft member having a head portion. Further, according to the present invention, it is characterized in that a connecting shaft hole through which the shaft member can be inserted is formed through the reinforcing piece of the supporting device for the foldable support leg. Further, according to the present invention, the reinforcing piece of the folding support leg support is formed with a connecting groove into which one end of the shaft member can be fitted. The connecting groove of the support device for a foldable supporting leg thus configured has a stronger strength at the peripheral portion of the hole than at the through hole. Further, according to the present invention, the shaft member of the supporting device for the foldable support leg is characterized by being formed into a rod shape having a constant diameter. The shaft member of the support device for a foldable support leg thus configured can be inserted and attached without checking the insertion side. Further, the folding supporter of the present invention is provided with at least one protrusion or recess on the side surface of the escape preventing member, and the protrusion or recess is fitted to the receiving space when the escape preventing member is fitted. It is characterized in that a concave portion or a convex portion that can be engaged with each other is provided. When the escape prevention member of the support device for a foldable support leg configured as described above is forcibly pressed into the receiving space portion, the protrusion or recess provided on the escape prevention member at the time of completion of mounting causes the protrusion space or the recess to be formed in the receiving space portion. Engage with the recesses or protrusions provided on the parts, respectively.

[0010]

【Example】

Embodiments of the present invention will be described below. First Embodiment FIGS. 1 to 3 are views showing a first embodiment of the present invention. FIG. 1 is an overall configuration diagram showing exploded components, FIG. 2 is a cross-sectional view of FIG. 1, and FIG. It is the II sectional view taken on the line of FIG. Reference numeral 1 is a main body having a shape that conforms to the specifications of a folding object, 2 is a support leg connecting piece integrally formed with the main body 1, 3 is a groove-like connecting shaft hole provided in the support leg connecting piece 2, Reference numeral 41 denotes a shaft member which is inserted through the connecting shaft hole 3 and the connecting shaft hole 9 and the shaft hole 5a provided in the support leg 5 so as to be inserted therethrough, and 6 is integrally formed on the main body 1 for mounting the support leg support. Vertical connection hole for supporting leg support, 7 is an escape preventing member for closing the direction in which the shaft member 41 is disengaged, 8 is a reinforcing piece provided on the outer peripheral edge of the main body 1 facing the supporting leg connecting piece 2 of the main body 1, 9 Is a connecting shaft hole provided on the same axis as the connecting shaft hole 3 of the supporting leg connecting piece 2, 10 is surrounded by the supporting leg connecting piece 2 and the reinforcing piece 8, and the supporting leg 5 can be undulated with the shaft member 41 as an axis. It is a receiving space that forms a special space.

Here, the receiving space portion 10 and its related members will be described in detail. The supporting leg 5 includes a shaft hole 5 a of the supporting leg 5 inserted into the receiving space portion 10, a connecting shaft hole 3 of the supporting leg connecting piece 2, and a reinforcing piece. By inserting the shaft member 41 into the connecting shaft hole 9 of No. 8, it is pivotally attached to the main body 1. The shaft member 41 is a stepped shaft member having a head portion 41a, and since the head portion 41a is inserted while being locked outside the shaft hole 5a of the support leg 5, the shaft member 41 is connected to the connecting shaft hole 9 side of the reinforcing piece 8. It is inserted in a state where the escape is restricted. In order to prevent the shaft member 41 from coming out of the connecting shaft hole 3, the shaft member 41 comes into contact with the side surface of the supporting leg connecting piece 2 on the receiving space portion 10 side so that the shaft member 41 is separated from the side surface of the supporting leg connecting piece 2. There are formed a projection portion for blocking the contact with the upper surface of the supporting leg connecting piece 2 and a flange portion 7a for contacting with the upper surface of the supporting leg connecting piece 2 to prevent the shaft member 41 from being separated from the upper surface of the supporting leg connecting piece 2.

The escape prevention member 7 is fixed to the main body 1 by screwing a fastening member 11 inserted into a vertically formed connecting hole 7 b into a nut member 12 arranged in the connecting hole 1 a of the main body 1. To be done. The main body 1 is integrally provided with a connection hole 6 for a support leg support in the vicinity of the support leg connection pieces 2 and 2 and reinforcement pieces 8 and 8 in order to have compatibility so that it can be applied as a support leg support tool or as a support connection tool. Is forming. Alternatively, as shown in FIG. 4, the aesthetic appearance may be adjusted without forming the supporting hole 6 for the supporting leg support. 5 to 11 show other various embodiments of the present invention, and the points different from the first embodiment according to the present invention will be clearly described below.

Second Embodiment FIG. 5 shows a second embodiment of the folding support leg support according to the present invention, in which the support leg connecting piece 2 is formed at the same height as the reinforcing piece 8 on the opposite side. The structure is the same as that of the first embodiment except that the connecting shaft hole 3 is perforated and the escape prevention member 7 having no flange portion 7a is joined to the upper portion thereof. With this configuration, the flange portion 7a of the escape prevention member 7 is not required, and the process of the escape prevention member 7 is further simplified, so that this type of foldable leg support can be manufactured more easily. it can.

Third Embodiment FIG. 6 shows a third embodiment of the folding support leg support according to the present invention, in which the connecting shaft hole 9 of the reinforcing piece 8 is a connecting groove which is a non-through hole. The structure is the same as that of the first embodiment except that the support leg 5 is made to be 91 and the supporting leg 5 is pivotally attached to the shaft member 41. With this structure, the non-through hole has a stronger peripheral edge portion than the through hole, so that the service life can be extended.

Fourth Embodiment FIG. 7 shows a fourth embodiment of the folding supporter for a leg according to the present invention . In this embodiment, a step like the head 41a is formed. The structure is the same as that of the third embodiment except that the supporting leg 5 is pivotally attached to the main body 1 by a shaft member 41 having the same diameter. In the fourth embodiment, since the shaft member having the same diameter can be used, the shaft member can be inserted and installed without checking the insertion side, the assembling work is simplified, and the foldable support leg of this type is used. The supporting device can be manufactured at a lower cost.

Fifth Embodiment FIG. 8 shows a fifth embodiment of the folding supporter for a leg according to the present invention . In this embodiment, means for connecting the escape prevention member 7 to the main body 1 is shown. As the guide member 7 and the nut member 12, the guide groove 1b is formed on the main body 1 and the escape prevention member 7 is formed with the guide protrusion 7c that fits in the guide groove 1b. The structure is the same as that of the second embodiment, except that 7 is press-fitted into the receiving space portion 10 to be coupled. With this configuration, the fastening member is not required, the assembly time can be significantly shortened, and the number of parts can be reduced. Therefore, this type of support device for a foldable supporting leg can be manufactured at a lower cost. Can be manufactured.

Sixth Embodiment FIG. 9 shows a sixth embodiment of the folding support leg support according to the present invention. The shaft member 41 used in this embodiment is reinforced in the same manner as in the fourth embodiment. The structure is the same as that of the fifth embodiment except that the connecting groove 9a is formed in the piece 8 and that the head 41a is not stepped and has the same diameter. With this configuration, the fastening member is not required, the assembly time can be greatly shortened, and the number of parts can be reduced, and this type of support for a foldable supporting leg can be manufactured at a lower cost. can do. In addition, since the shaft member with the same diameter can be used, it can be installed without checking the insertion side, and the work efficiency is further improved with the simplification of the assembly work. The support for the supporting leg can be manufactured more inexpensively.

Seventh Embodiment FIG. 10 shows a seventh embodiment of the foldable support leg support according to the present invention. In this embodiment, the escape preventing member 7 connects the fastening member 11 to the escape preventing member. 7 has the same configuration as that of the first embodiment except that it is joined to the main body 1 by being screwed into a nut member 12 that is fixedly joined to the bottom portion of 7. With this configuration, it is possible to save the trouble of performing the screwing work while fixing the nut member 12 so as not to fall off, and improve the efficiency of the assembling work.

Eighth Embodiment FIG. 11 shows an eighth embodiment of the foldable support for leg according to the present invention . In this embodiment, as in FIGS. An elongated guide groove is formed so that one side of the shaft member 41 to be coupled is projected from the support leg connecting piece 2 and the protrusion preventing member 7 can receive the projection of the shaft member 41. 7d is bored toward the tip, and the protrusion preventing portion is guided into the guide groove 7d so that the escape preventing member 7 is inserted into the main body 1. The escape prevention member 7 is connected to the main body 1 by being screwed with the fixed nut member 12.

With this configuration, it is not necessary to perform the screwing work while fixing the nut member 12, and the efficiency of the assembling work can be improved. Further, when manufacturing various types of foldable supporters, the dimension of the shaft member should be changed according to the difference in size, but such a guide groove 7d is used to prevent the escape member 7 It is possible to apply even a slightly longer shaft member by drilling in the hole, and it is possible to maximize the use of the common shaft member for the foldable support gear supports of different sizes. In addition, various types of support equipment for the foldable support leg can be manufactured at low cost. Further, since the shaft members having the same diameter can be used, the work efficiency can be improved with the simplification of the assembling work, and the supporting device for the folding type supporting leg can be manufactured at a lower cost. .

Next, a procedure for pivotally attaching the support leg 5 to the main body 1 in the folding support leg support thus configured will be described. First, the supporting leg 5 is inserted into the receiving space portion 10 of the main body 1, and the shaft hole 5a of the supporting leg 5 is inserted into the connecting shaft hole 3 of the supporting leg connecting piece 2 and the connecting shaft hole 9 of the reinforcing piece 8 or the connecting groove 9a. In this state, the shaft member 41 is inserted from the connecting shaft hole 3 into the connecting shaft hole 9 or the connecting groove 9a, and the supporting leg 5 is pivotally attached to the main body 1. Then, the escape prevention member 7 for preventing the shaft member 41 from slipping out is fitted to the main body 1 while the support leg 5 is pivotally attached. Next, the escape prevention member 7 is fixed to the main body 1 by using the fastening member 11 to the bottom surface of the main body 1 or the nut member 12 that is fixedly coupled to the escape prevention member 7. In order to engage the guide protrusion 7c integrally formed with the escape prevention member 7 with the formed guide groove 1b, the escape prevention member 7 is strongly press-fitted into the main body 1 to be coupled. The connection between the main body 1 and the supporting leg 5 is completed by the assembly work of selecting one of the various connection methods described above and connecting the escape prevention member 7 to the main body 1. FIG. 12 shows an example of a use state of the folding support leg support according to the present invention.

[0022]

[Effect of device]

 Since the present invention is configured as described above, it has the effects described below. (1) According to the present invention, the shaft member does not require any finishing treatment work by hitting or pressing to prevent the support leg from coming out by using the escape preventing member, and thus the assembly is easy. The burden on the operator can be reduced.

(2) According to the present invention, the load is dispersed by the reinforcing piece formed on the opposite side of the supporting leg connecting piece, shear stress and stress concentration on the shaft member are eliminated, and the bending of the shaft member is prevented. As a result, it is possible to realize a smooth pivoting movement of the supporting leg and prevent the phenomenon that the supporting leg is lifted from the ground due to the structural distortion due to the above-mentioned causes, and it is possible to secure the safety in use.

(3) According to the present invention, by providing the reinforcing piece having the connecting shaft hole, the stress concentration acting on the connecting shaft hole of the supporting leg connecting piece is eliminated, and the peripheral portion of this part is enlarged or ruptured. It can be prevented and the service life can be extended.

(4) According to the present invention, since the connecting shaft hole provided in the reinforcing piece can be made a non-through hole, the strength of the hole peripheral portion can be made stronger than that of the through hole, and the service life can be improved. Can be extended.

(5) According to the present invention, since the shaft member having the same diameter can be used, the insertion work can be performed without checking the insertion side, and the work efficiency of the assembly can be improved by simplifying the work. It can be increased.

(6) According to the present invention, since the escape prevention member can be engaged with the receiving space portion only by forcibly pressing it in such a manner that it does not fall off, the fastening member becomes unnecessary, and the assembling time is greatly increased. It can be shortened.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of a foldable support leg support according to the present invention.

FIG. 2 is a cross-sectional view of the first embodiment of the present invention.

3 is a cross-sectional view taken along the line I-I of FIG.

FIG. 4 is a cross-sectional view similar to FIG. 2 in the case where the connection hole for the fulcrum support device is deleted in the first embodiment of the folding support leg support device according to the present invention.

FIG. 5 is a sectional view similar to FIG. 3, showing a second embodiment of the folding support leg support according to the present invention.

FIG. 6 is a sectional view similar to FIG. 3, showing a third embodiment of the folding support leg support according to the present invention.

FIG. 7 is a sectional view similar to FIG. 3, showing a fourth embodiment of the folding support leg support according to the present invention.

FIG. 8 is a sectional view similar to FIG. 3, showing a fifth embodiment of the folding support leg support according to the present invention.

FIG. 9 is a sectional view similar to FIG. 3, showing a sixth embodiment of the folding support leg support in accordance with the present invention.

FIG. 10 is a sectional view similar to FIG. 3, showing a seventh embodiment of the folding support leg support according to the present invention.

FIG. 11 is a sectional view similar to FIG. 3, showing an eighth embodiment of the folding support leg support in accordance with the present invention.

FIG. 12 is a perspective view showing an example in which the folding supporter for a leg according to the present invention is applied to a folding structure.

FIG. 13 is a bottom view showing an example of a conventional foldable support leg support.

FIG. 14 is a plan view of the folding support leg support shown in FIG. 1.

FIG. 15 is a plan view showing an example of a structure of a conventional folding-type supporting leg support different from that in FIG.

[Explanation of symbols]

 1 main body 1a connecting hole 1b guide groove 2 supporting leg connecting piece 3 connecting shaft hole 4,41 shaft member 41a head 5 supporting leg 5a shaft hole 6 supporting leg support connecting hole 7 escape prevention member 7a flange 7b connecting hole 7c guide projection 7d Guide groove 8 Reinforcing piece 9 Connecting shaft hole 91 Recessing groove for connection 10 Receiving space portion 11 Fastening member 12 Nut member

Claims (6)

[Scope of utility model registration request] 1. A support leg support in which a support leg is pivotally attached to a support leg connection piece formed on a main body by a shaft member, wherein a width at which the support leg can be undulated is provided on the opposite side of the main body from the support leg connection piece. Forming a receiving space portion of the support leg, and a reinforcing piece is integrally erected at a position separated from the supporting leg connecting piece through the receiving space portion, and the supporting leg is the receiving space portion and the supporting leg connecting piece and the reinforcing piece. The shaft member is pivotally mounted by the shaft member inserted in the piece, and the shaft member is closed in the disengagement direction by an escape prevention member attachable to the side facing the receiving space through the support leg connecting piece. A support for a foldable leg that is characterized by being 2. The foldable support leg support according to claim 1, wherein the shaft member is a stepped shaft member having a head portion. 3. The folding support leg support according to claim 1, wherein a connecting shaft hole through which the shaft member can be inserted is formed through the reinforcing piece. 4. The reinforcing piece is formed with a connecting groove into which one end of the shaft member can be fitted.
The support device for a foldable support leg described in. 5. The support for a foldable leg according to claim 1, wherein the shaft member is formed in a rod shape having a constant diameter. 6. At least one side surface of the escape prevention member.
6. A convex portion or a concave portion is provided, and a concave portion or a convex portion which can be engaged with the convex portion or the concave portion when the escape preventing member is fitted is provided in the receiving space portion. The support device for a foldable support leg according to any one of 1.