TW201934173A - A demarcation installation having two main connectors - Google Patents

Abstract

The invention relates to a demarcation installation (100) comprising a first main connector (102) configured to connect together, first, second, third, and fourth connection elements (10, 20, 30, and 40), a second main connector (104) configured to connect together fifth, sixth, seventh, and eighth connection elements (50, 60,70, and 80), a first bow (4) and a second bow (6) respectively including a first fastening portion (138) and a second fastening portion (140), a first secondary connector (130) configured to connect together the first and sixth connection elements and the first bow, a second secondary connector (132) configured to connect together the second and fifth connection elements and the second bow, and a link (8) extending between said fastening portions, the first and second main connectors extending on either side of a vertical plane (P) containing the link.

Description

Demarcation device with two main connectors

FIELD OF THE INVENTION The present invention relates to the field of sports equipment used on the playing field, and in particular to the field of sports equipment for racket sports.

The invention relates more precisely to a delimitation device that is deployed on the ground to define two playing fields.

BACKGROUND OF THE INVENTION The main application of the delimitation device is to perform outdoor racket sports, especially in the courtyards or parks in urban areas. Users in urban areas rarely have a courtyard capable of racket sports.

The delimitation device of the present invention must be easy to transport and must be quickly set up and disassembled, while being sufficiently stable to ensure that it can comfortably move on matte ground or in a breeze outdoor environment.

Various detachable demarcation devices are known, such as the demarcation device described in document EP0595815, which consists of two pillars and a net extending between the two pillars. The pillars are each connected to two connectors that extend substantially in the same plane as the net. Two leg members extend on either side of each connector to keep the device on the ground.

One disadvantage of this type of device is that because the leg members extend laterally from the end of the net to the plane of the net, they are particularly bulky in their use state.

Moreover, the leg members need to be particularly strong in order to support the device as a whole. As a result, the device is particularly heavy, making it difficult to transport once the device is folded.

In addition, it has been found that such devices are often expensive.

SUMMARY OF THE INVENTION The object of the present invention is to propose a delimitation device for a playing field, which improves the above disadvantages. A specific object of the present invention is to reduce the size of the device and its manufacturing cost. The delimitation device must also have good stability in order to be able to move on matte ground or in a breeze outdoor environment.

To this end, the present invention provides a demarcation device for dividing two playing fields. The device includes:
-A first main connector configured to connect the first connection element, the second connection element, the third connection element, and the fourth connection element together;
-A second main connector configured to connect the fifth connection element, the sixth connection element, the seventh connection element, and the eighth connection element together;
-The first bending portion and the second bending portion, respectively including a first fastening portion and a second fastening portion;
-A first secondary connector configured to connect the first connecting element, the sixth connecting element and the first bent portion together;
-A second sub-connector configured to connect the second connecting element, the fifth connecting element and the second bent portion together; and
-A coupling portion extending on the ground between said fastening portions of the first and second bending portions;
The first main connector and the second main connector extend on either side of a vertical plane including the coupling portion.

The primary and secondary connectors are used to releasably connect the connecting element and the bend together. In this way, the device of the present invention can be placed in an unfolded position and a folded position. In the unfolded position, the device rests on the ground and enables racket-like movement. In the folded position, the device can be easily stored and moved.

In a non-limiting manner, in order to place the device in the deployed position, a user connects a connection element to an associated main connector. Then, the user connects the first connection element and the sixth connection element together with the first auxiliary connector and connects them with the first bending portion. The user also connects the second connection element and the fifth connection element together with the second sub-connector and connects them with the second bending portion. An assembly consisting of a connection element and a main connector and a sub-connector constitutes a base, which is configured to support two bends. Then, the user may set the coupling portion between the fastening portion of the first bending portion and the fastening portion of the second bending portion.

Preferably, but in a non-limiting manner, the first bend and the second bend are flexible, so that the fastening portion that fastens the coupling portion to the bend portion helps to place the bend portion and the coupling simultaneously under tension And then deploy the device on the ground. The bending portion is kept in an arc-shaped state facing the sky under the effect of the tension by the coupling portion. In contrast, the bent portion holds the coupling portion between the two fastening portions substantially horizontally under the effect of tension. Therefore, the delimiting device of the present invention can be quickly installed without special tools.

It can be understood that when the device is placed in the deployed position and placed on the ground, the plane containing the coupling portion is vertical. The advantage of this configuration is that the stability of the device is improved in consideration of the direction extending transversely to the plane.

Furthermore, it is possible to think in a variant that one or more connecting elements extend from one of the main connectors so as to rest on the ground to form a stand for supporting the device. In this variant, the main connector laterally consolidates the device and enables its stability to be improved.

Preferably, the connection element is rigid.

The main connector extends on either side of the vertical plane containing the coupling and is considered to have a particularly small lateral footprint of the device in this plane.

Preferably, but by way of non-limiting manner, the first main connector and the second main connector extend on either side of the vertical plane containing the coupling portion and in a manner symmetrical to the plane. This symmetry helps to improve the balance and thus the stability of the device.

To place the device in the folded position, the user releases the coupling portion, disengages the bent portion from the secondary connector, and disengages the connecting element from the primary connector and the secondary connector. Therefore, each connection element can be separated and stored independently to increase the tightness of the device when folded. By way of non-limiting example, the connecting elements and connectors can be placed in a storage bag for transport.

Preferably, the first main connector and the second main connector are configured to rest on the ground, so that the connectors and the ground constitute contact points for the device, and the contact points are provided in a vertical position including the coupling portion. On either side of the straight plane. These connectors prevent the device from tilting in a direction that extends laterally to the plane, such as when a user bumps the device. Therefore, the lateral stability of the device is improved.

Preferably, the connecting elements are substantially the same. In this way, all the connecting elements assume substantially the same size. One such advantage is that all connecting elements can be manufactured using a single mold, thereby reducing manufacturing costs. Furthermore, the connecting elements can be interchanged in any way. This helps to build and deploy the device.

Advantageously, the third connection element, the fourth connection element, the seventh connection element, and the eighth connection element are configured to rest on the ground. The advantage is that these connecting elements form a stand that enables the device to be supported and stabilized. In a non-limiting manner, these connection elements resting on the ground can be ballasted or fastened to the ground by means of tent piles, which may be U-shaped piles, in order to further improve the stability of the device of the invention.

Advantageously, the third connection element, the fourth connection element, the seventh connection element and the eighth connection element are rods, each rod having at least a first end.

These rods have a lateral dimension much smaller than their length. By way of non-limiting example, these rods can be made of fiberglass or shaped materials.

In an advantageous variant, the first ends of the fourth connection element and the seventh connection element are connected together by a first connection part, and the first ends of the third connection element and the eighth connection element are connected together by a second connection part .

Therefore, in this variant, the third connection element extends between the first main connector and the second connection part. The fourth connection element extends between the first main connector and the first connection member. The seventh connection element extends between the second main connector and the first connection member. An eighth connection element extends between the second main connector and the second connection member. These third connection elements, fourth connection elements, seventh connection elements, and eighth connection elements, and two main connectors and two connection members together form a closed structure.

Preferably, the vertical plane including the coupling portion includes a first connection member and a second connection member. Advantageously, but in a non-limiting manner, the vertical plane containing the coupling constitutes a plane of symmetry for the device, thereby enhancing the balance of the device.

In a non-limiting embodiment, the third connection element and the seventh connection element are substantially parallel, and the fourth connection element and the eighth connection element are substantially parallel. Therefore, the third connection element, the fourth connection element, the seventh connection element, and the eighth connection element form a parallelogram. Furthermore, when they rest on the ground to form a stand, these connecting elements arranged in a parallelogram increase the balance of the device and prevent it from tilting in either direction.

In a particularly advantageous solution of the invention, the first connection element, the second connection element, the fifth connection element and the sixth connection element are inclined with respect to a plane containing the third connection element and the seventh connection element. Advantageously, when the device is placed in its deployed position, this plane containing the third connection element and the seventh connection element is substantially horizontal, so that the first connection element, the second connection element, the fifth connection element, and the sixth connection The element is tilted upward relative to the horizontal direction. The first connection element and the sixth connection element constitute a support device for the first curved portion, and the second connection element and the fifth connection element constitute a support device for the second curved portion.

Preferably, the first connection element, the second connection element, the fifth connection element, and the sixth connection element are inclined with respect to the plane at an angle in a range of 15 ° to 45 °. This inclination is selected by placing the joint at a height suitable for racket-like sports. Specifically, this inclination is selected according to the length of the bent portion.

Advantageously, the first main connector has a first top opening, a second top opening, a first bottom opening, and a second bottom opening, which are respectively configured to receive the first connection element, the second connection element, the third connection element, and Fourth connection element.

Advantageously, the second main connector has a first top opening, a second top opening, a first bottom opening, and a second bottom opening, which are respectively configured to receive a fifth connection element, a sixth connection element, a seventh connection element, and Eighth connecting element. Therefore, by inserting a connection element into an opening of one of the main connectors, the connection element is fixed to the connector. The inclination of the opening determines the inclination of the connecting element inserted into the opening.

For example, the inclination angle between the first top opening and the second bottom opening of the first main connector is the same as the inclination angle between the first connecting element and the fourth connecting element. Similarly, the inclination angle between the second top opening and the first bottom opening of the first main connector is the same as the inclination angle between the second connecting element and the third connecting element.

The terms "bottom" and "top" should be considered relative to a substantially vertical direction.

Advantageously, the bottom opening of the main connector is arranged substantially horizontally, so that the third, fourth, seventh and eighth connection elements extend substantially in a horizontal plane. Moreover, the top opening of the main connector is inclined with respect to the bottom opening, so that the first connection element, the second connection element, the fifth connection element, and the sixth connection element are inclined with respect to the horizontal direction.

Preferably, the connecting element and the bent portion are detachably connected to the main connector and the sub-connector. The advantage is that the device can be easily unfolded and folded while increasing the compactness of the device when folded.

Preferably, the first auxiliary connector and the first connecting element and the sixth connecting element are held to each other by the first elastic means so that they can be held together when they are disengaged, and the second auxiliary connector is connected to the second connecting element and the fifth The connecting elements are held to each other by a second elastic means so that they can be held together when they are disengaged. The advantage is that it helps to connect the secondary connector with the corresponding connecting element, so as to simplify the deployment of the device. In addition, this makes it possible to avoid losing connection elements or secondary connectors when the device is in its folded position. Therefore, it facilitates the installation and disassembly operations of the device.

Advantageously, the first connection member, the fourth connection member, and the seventh connection member are held to each other by the first elastic member so that they can be held together when they are disengaged, and the second connection member is connected to the third connection member and the eighth connection member. The second elastic members are held to each other so that they can be held together when they are disengaged. Again, the advantage is that it facilitates the construction and disassembly of the device.

Preferably, the first connection element, the third connection element, the fourth connection element, and the eighth connection element form a diamond shape. It can be understood that the first connection element, the third connection element, the fourth connection element, and the seventh connection element then have the same length. The advantage of this configuration is that the vertical plane containing the coupling portion constitutes a plane of symmetry for the rhombus, so that the main connector is arranged symmetrically with respect to the plane. Again, enhance the balance of the device. In addition, within a relatively small distance between the main connector and the vertical plane, the first connection element, the third connection element, the fourth connection element, and the eighth connection element only slightly project into the delimitation by the device In the playing field. Therefore, the overall size of the device in the deployed position is reduced.

Preferably, the joint is a net. The advantage is that it is convenient for racket-like sports, and it is particularly convenient to determine whether the ball or badminton has indeed passed the joint.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 shows an example of a demarcation device 100 according to the present invention, which is used to delimit two regions for performing sports (especially racket-like sports). Such a device is particularly suitable for playing badminton outdoors. The device can be placed in an unfolded position and a folded position, wherein in the unfolded position the device stands on the ground and enables movement, and in the folded position the device is stored and can be moved. The device has a base portion 2, a first bending portion 4, a second bending portion 6, and a coupling portion 8 extending between the two bending portions.

The base consists of the first connection element 10, the second connection element 20, the third connection element 30, the fourth connection element 40, the fifth connection element 50, the sixth connection element 60, the seventh connection element 70, and the eighth connection element 80 together with The first main connector 102 and the second main connector 104 are formed together with the first connection member 120 and the second connection member 122.

In this example, the connecting element is a pole of the tent stake type that can be made of fiberglass or plastic material. These rods are essentially the same so that their diameter is similar to their length. The first connection element 10 has a first end 10a and a second end 10b opposite the first end. Likewise, each connection element has a first end and a second end opposite the first end. For readability reasons, these ends are not marked in the drawings.

As can be seen from FIG. 1, the first main connector 102 and the second main connector 104 are configured to rest on the ground. In this non-limiting example, the first main connector 102 and the second main connector 104 are the same.

An example of the first main connector 102 is shown in FIG. 2. This main connector 102 is a molded part including a first sleeve 106, a second sleeve 108, a third sleeve 110, and a fourth sleeve 112. Each of these sleeves has an axis. The axes of these sleeves converge at the connection point 114. The third sleeve 110 and the fourth sleeve 112 are configured to rest on the ground, and when the device 100 is placed in the deployed position, they are in a plane Q substantially parallel to the ground. Referring to the plane Q, the third sleeve 110 and the fourth sleeve 112 form an obtuse angle at a point coincident with the connection point 114.

When the device 100 is in the deployed position, the first sleeve 106 and the fourth sleeve 112 are substantially coplanar in a substantially vertical first plane. Further, referring to the plane, the first sleeve 106 is inclined relative to the fourth sleeve 112 in an outward direction at an angle α in a range of 15 ° to 45 °, and preferably in a range of 25 ° to 35 °. , So it is tilted relative to the horizontal direction.

Similarly, when the device 100 is in the deployed position, the second sleeve 108 and the third sleeve 110 are substantially coplanar in a substantially vertical second plane. In addition, referring to the plane, the third sleeve 108 is inclined upward with respect to the first sleeve 110 at an angle β in a range of 15 ° to 45 °, and preferably in a range of 25 ° to 35 °, and thus relative to Tilt horizontally.

The first top opening 102a, the second top opening 102b, the first bottom opening 102c, and the second bottom opening 102d are provided at the first sleeve 106, the second sleeve 108, the third sleeve 110, and the fourth sleeve 112, respectively. in. These openings are configured to receive the second ends of the first connection element 10, the second connection element 20, the third connection element 30, and the fourth connection element 40, respectively.

As can be seen from FIG. 1, in order to place the device 100 in the deployed position, the user inserts the second end of the connecting element into the corresponding opening of the main connectors 102 and 104.

In this example, since the connecting elements are all the same and in the form of rods, they can be interchanged and turned freely to fit onto the main connector in any direction. In this way, the user does not encounter any difficulties when connecting the connecting element to the main connector, and the device can be easily installed.

By way of non-limiting manner, the first main connector 102 and the second main connector 104 are substantially the same, so that they are also freely interchangeable. The second main connector 104 has the same characteristics as the first main connector 102, and thus will not be described in detail. The second main connector 104 also has a first top opening, a second top opening, a first bottom opening, and a second bottom opening, and these openings are configured to receive the fifth connection element 50, the sixth connection element 60, and the seventh connection, respectively. Element 70 and eighth connection element 80.

The inclination of the first sleeve 106 and the second sleeve 108 with respect to the fourth sleeve 112 and the third sleeve 110 of the first main connector 102 determines the horizontal direction of the first connection element 10 and the second connection element 20 with respect to the horizontal direction. inclination. Therefore, the second connection element 20 is also inclined with respect to the third connection element 30 and with respect to the horizontal plane Q at an angle β in the range of 15 ° to 45 °. In the same way, the first connection element 10 is also inclined with respect to the fourth connection element 40 and with respect to the horizontal plane Q at an angle α in the range of 15 ° to 45 °.

In the same manner, the inclination of the first sleeve and the second sleeve of the second main connector 104 determines the inclination angles of the fifth connection element 50 and the sixth connection element 60 with respect to the horizontal direction. Therefore, the fifth connection element 50 is also inclined with respect to the eighth connection element 80 at an angle in the range of 15 ° to 45 °. In the same manner, the sixth connection element 60 is inclined with respect to the seventh connection element 70 at an angle in the range of 15 ° to 45 °.

Moreover, exemplary connection members 120, 122 are shown in FIG. This connecting part includes a first sleeve 126 and a second sleeve 128, each sleeve having a respective axis. The axes of these sleeves form an acute angle substantially equal to 40 °. The first opening 120a and the second opening 120b are provided in the first sleeve 126 and the second sleeve 128, respectively. This connecting part 120, 122 also has a third sleeve 129 which is opposite to the other two sleeves 126 and 128 and has an equal division of the angle between the axes of the other two sleeves 126 and 128 Axis on the line. A third opening 120c is also formed in this third sleeve 129. The first opening 120a and the second opening 120b are configured to receive a first end of a corresponding connection element. The first connection member 120 and the second connection member 122 are substantially the same.

Referring again to FIG. 1, it can be seen that the first connection member 120 connects the fourth connection element 40 and the seventh connection element 70 together. The second connection member 122 connects the third connection element 30 and the eighth connection element 80 together. These connecting members 120 and 122 are configured to rest on the ground.

In this example, the third connection element 30, the fourth connection element 40, the seventh connection element 70, and the eighth connection element 80 are coplanar in the plane Q and they rest on the ground so as to form a substantially horizontal stand. Further, the main connectors 102, 104 and the connection members 120, 122 are configured such that the third connection element 30 is substantially parallel to the seventh connection element 70 and the fourth connection element 40 is substantially parallel to the eighth connection element 80. Furthermore, and in a non-limiting manner, the kit of four connecting elements acts as a diamond-shaped support. These connecting elements provide stability to the device.

Moreover, the device also has a first sub-connector 130 and a second sub-connector 132 for connecting the bent portions 4 and 6 to the base portion 2. In this non-limiting element, the secondary connectors 130 and 132 are substantially the same as the first and second connection members 120 and 122 and also include three sleeves, each sleeve having a respective axis and an opening formed In it. Therefore, the secondary connector also has three openings.

The first sub-connector 130 connects the first connecting element 10, the sixth connecting element 60, and the first bent portion 4 together. Specifically, the first end 41 of the first bent portion 4 is inserted into the third opening of the first sub-connector. The second sub-connector 132 connects the second connecting member 20, the fifth member 50, and the second bent portion 6 together. Similarly, the first end 61 of the second bent portion 6 is inserted into the third opening of the second sub-connector 132.

Fig. 4 is a front view of the device of the present invention. In this drawing, it can be seen that the two bent portions 4 and 6 are spaced from each other, are inclined toward each other, and extend upward from the first sub-connector 130 and the second sub-connector 132. The first bending portion 4 and the second bending portion 6 include a first fixing portion 138 and a second fixing portion 140, respectively.

In this non-limiting example, the first curved portion 4 and the second curved portion 6 are each composed of a bottom section 4a, 6a and a top section 4b, 6b which are connected together by connection means 11,13.

Moreover, the coupling portion 8 extends between the two bent portions 4, 6, and more specifically, between the two fastening portions 138 and 140. These fastening portions are located at the free ends 42 and 62 of the curved portions 4 and 6 remote from the first ends 41, 61 of the curved portion. By a non-limiting manner, the fastening may be performed by inserting the free ends 42 and 61 of the bent portions 4 and 6 into the pockets 142 and 144 provided at the opposite ends of the coupling portion 8.

In this example, the coupling portion 8 is a net extending between the two fastening portions 138 and 140. The net 8 keeps the two bends 4 and 6 under tension and bends in a convex manner. In contrast, the curved portion holds the net between two fastening portions 138 and 140 under the effect of horizontal tension.

Fig. 5 shows the device 100 viewed from the side, and Fig. 6 shows the device 100 viewed from above. In these figures, it can be seen that the first main connector 102 and the second main connector 104 are located on either side of the vertical plane P containing the mesh 8. Further, the plane P passes through the sub-connectors 130 and 132 and passes through the connecting members 120 and 122.

The main connectors 102 and 104 are arranged substantially symmetrically with respect to the plane P. The distance between the plane P and each of the main connectors 102 and 104 is substantially equal to half the length of one connecting element 10, 20, 30, 40, 50, 60, 70 or 80. This distance is so short that the stand projects only a short distance into each of the two playing fields delimited by the device. Further, in consideration of the protrusion on the vertical plane P containing the mesh, the main connector is provided at a substantially middle position along the length of the mesh.

Furthermore, the plane P constitutes a plane of symmetry for the delimiting device 100, particularly for the base 2. In particular, it can be seen that the plane P constitutes a symmetry plane for a diamond-shaped bracket composed of the third connection element 30, the fourth connection element 40, the seventh connection element 70, and the eighth connection element 80. In particular, the intersection between the plane P and the plane Q (in which the third connection element 30, the fourth connection element 40, the seventh connection element 70, and the eighth connection element 80 extend) basically constitutes formed by these connection elements One of the diagonals of the rhombus.

In a non-limiting manner, the connecting elements 10, 20, 30, 40, 50, 60, 70, and 80 are releasably connected to the main connectors 102 and 104, to the connecting members 120 and 122, and to the sub-connectors. Connectors 130 and 132. In this way, the user can easily place the device in its folded position and increase the tightness of the device when folded. To fold the device 100, it is suitable to release the ends of the connecting elements so that they are detached from each connector and connecting part. Thereafter, the user disengages the bottom sections 4a, 4b and the top sections 6a, 6b from the connecting devices 11, 13.

Moreover, the first sub-connector 130 and the first and sixth connection elements 10 and 6 may be held to each other by a first elastic means for holding them together when they are disengaged. Likewise, the second sub-connector 132 and the second connection element 20 and the fifth connection element 50 may be held to each other by a second elastic means for holding them together when they are disengaged. Further, the first connection member 120 and the fourth connection element 40 and the seventh connection element 70 are held to each other by a first elastic member (for holding them together when they are disengaged). The second connection member 122 and the third connection element 30 and the eighth connection element 80 are held to each other by a second elastic member (for holding them together when they are disengaged). Because of these elastic means of the component, the connecting element and the connector or connecting member are easily connected together, and they cannot be separated. Therefore, the operation of setting up and disassembling the device is simple.

2‧‧‧ base

4, 6‧‧‧ bend

4a, 6a ‧‧‧ bottom paragraph

4b, 6b

8‧‧‧Joint Department

10, 20, 30, 40, 50, 60, 70, 80‧‧‧ connecting elements

10a‧‧‧First end

10b‧‧‧Second end

11, 13‧‧‧ Connected device

41, 61‧‧‧ first end

42, 62‧‧‧ free end

100‧‧‧ Delimitation device

102, 104‧‧‧ main connector

102a‧‧‧First top opening

102b‧‧‧Second top opening

102c‧‧‧First bottom opening

102d‧‧‧Second bottom opening

106‧‧‧first sleeve

108‧‧‧Second sleeve

110‧‧‧Third sleeve

112‧‧‧Fourth sleeve

114‧‧‧connection point

120, 122‧‧‧ Connecting parts

120a‧‧‧First opening

120b‧‧‧Second opening

120c‧‧‧Third opening

126‧‧‧first sleeve

128‧‧‧Second sleeve

129‧‧‧Third sleeve

130, 132‧‧‧ secondary connectors

138‧‧‧First fixed part

140‧‧‧Second Fixing Section

Q, P‧‧‧plane

β, α‧‧‧ angle

With reference to the drawings, the invention can be better understood by reading the following description of embodiments of the invention given by way of non-limiting examples, in the drawings:

-Figure 1 shows the delimiting device of the invention for delimiting two playing fields;

-Figure 2 shows the main connector of the device of Figure 1;

-Figure 3 shows the connecting parts of the device of Figure 1;

-Figure 4 shows a front view of the device of Figure 1;

-Figure 5 shows a side view of the device of Figure 1; and

-Fig. 6 shows a plan view of the device of Fig. 1 as viewed from above.

Claims (16)

A demarcation device for delimiting two playing fields, the device includes: -A first main connector configured to connect the first connection element, the second connection element, the third connection element, and the fourth connection element together; -A second main connector configured to connect the fifth connection element, the sixth connection element, the seventh connection element, and the eighth connection element together; -The first bending portion and the second bending portion, respectively including a first fastening portion and a second fastening portion; -A first secondary connector configured to connect the first connection element, the sixth connection element, and the first bent portion together; -A second sub-connector configured to connect the second connection element, the fifth connection element, and the second bent portion together; and -A coupling portion extending on the ground between the first bending portion and the fastening portion of the second bending portion; The first main connector and the second main connector extend on either side of a vertical plane including a coupling portion. The device of claim 1, wherein the first main connector and the second main connector (104) are configured to rest on the ground. The device according to claim 1 or 2, wherein the third connection element, the fourth connection element, the seventh connection element, and the eighth connection element are configured to rest on the ground. The device according to any one of claims 1 to 3, wherein the connection elements are substantially the same. The device according to any one of claims 1 to 4, wherein the third connection element, the fourth connection element, the seventh connection element, and the eighth connection element are rods, each of which The rod has at least a first end. The device according to claim 5, wherein first ends of the fourth connection element and the seventh connection element are connected together by a first connection member, and wherein the third connection element and the eighth connection The first ends of the elements are connected together by a second connection member. The device of claim 5 or 6, wherein the third connection element and the seventh connection element are substantially parallel, and wherein the fourth connection element and the eighth connection element are substantially parallel. The device according to any one of claims 1 to 7, wherein the first connection element, the second connection element, the fifth connection element, and the sixth connection element are included with respect to the third connection element. The plane of the element and the seventh connecting element is inclined. The device according to claim 8, wherein the first connection element, the second connection element, the fifth connection element, and the sixth connection element are at an angle in a range of 15 ° to 45 ° with respect to The plane is inclined. The device according to any one of claims 1 to 9, wherein the first main connector has: a first top opening, a second top opening, a first bottom opening, and a second bottom opening, each configured to receive the first opening A first connection element, the second connection element, the third connection element, and the fourth connection element. The device according to any one of claims 1 to 10, wherein the second main connector has: a first top opening, a second top opening, a first bottom opening, and a second bottom opening, configured to receive the first Five connection elements, the sixth connection element, the seventh connection element, and the eighth connection element. The device according to any one of claims 1 to 11, wherein the connection element and the bent portion are detachably connected to the main connector and the sub-connector. The device according to claim 12, wherein the first sub-connector, the first connection element and the sixth connection element are held to each other by a first elastic means so that they can be held together when disengaged, And wherein the second sub-connector, the second connection element and the fifth connection element are held to each other by a second elastic device, so that they can be held together when they are disengaged. The device according to claim 5 and claim 12 or 13, wherein the first connection member, the fourth connection member, and the seventh connection member are held to each other by a first elastic member, so that when they are disengaged Can be held together, and wherein the second connection member, the third connection member, and the eighth connection member are held to each other by a second elastic member, so that they can be held together when disengaged. The device according to any one of claims 1 to 14, wherein the first connection element, the third connection element, the fourth connection element, and the eighth connection element form a diamond shape. The device according to any one of claims 1 to 15, wherein the connection portion is a net.