JP5339614B2 - Net set - Google Patents

Description

The present invention is a net set composed of a net support structure and a net that can be used for sports or games using nets such as badminton, tennis, and volleyball, and the net itself has substantially no elasticity. The net can be stretched, has a small number of parts, is light in weight, has a simple structure, does not take time to stretch the net, and does not wrinkle the net. Further, the present invention relates to a net set including a net support structure and a net in which the net tension state is always strong and stable.

Furthermore, the present invention relates particularly net set never wrinkle at the end near the post of the net.

  Conventionally, a net support structure has been proposed in which the net is stretched by pulling the left and right ends of the net with elastic rubber strings drawn from the tips of two columns (see Patent Document 1).

  However, in the structure of such a conventional net support, the number of parts increases due to the elastic rubber string necessary to make the net stretched and the flexible elastic material (rubber) incorporated in the net itself. The problem is that the net tension is unstable due to problems and the effects of rubber changes over time, and the fundamental drawback is that wrinkles naturally occur on the side of the net. was there.

  In addition, in the net device using a tension rope stretched between the support column and the ground to support the support column, there is a problem that the number of parts is large, a problem that it takes time to install the net, and the tension of the net is weak. (See Patent Document 2).

  Furthermore, in the net device described in Patent Document 2, it is necessary to drive a peg into the ground, or to place a weight of a bag or container filled with water, sand, etc. on a tension bar fixing rod. There was a problem that the net could not be installed in places that could not be satisfied.

  In addition, in the net support structure that uses a vertical column support telescopic frame to hold two struts, the structure is complicated, the number of parts increases, and the weight increases. There was a problem that the state was unstable (see Patent Document 3).

  Therefore, a sports net has been proposed in which a stretching support column is provided at the center of the connecting pipe that connects the lower ends of the two columns to stretch the net, but depending on the structure, it is added to the net. Problems such as weak tension, problems that the structure is complicated and the number of parts is increased due to the tensioning auxiliary struts, problems that it takes time to assemble, and the height of the installation surface of the struts at both ends and the tensioning auxiliary struts There is a problem that the net installation state becomes unstable depending on the installation location of the net, for example, it is necessary to align the height of the installation surface correctly (see Patent Document 4).

Utility Model Registration No. 3100716 JP-A-8-71189 Utility Model Registration No. 3143234 JP 2004-166884 A

Therefore, the problem to be solved by the present invention is that the number of parts is increased and the structure is complicated by stretching the net using a flexible elastic material such as rubber, a tension rope, a telescopic rack, or a tension auxiliary column. Increase the weight, take time to stretch the net, cause wrinkles on the net, weak net tension, and the net tension may become unstable due to changes over time or installation location. It is an object of the present invention to provide a net set including a simple net support structure and a net for solving these problems.

  Furthermore, an object of the present invention is a net set comprising a simple net support structure and a net that solves the above-mentioned problems, and is lightweight and convenient to carry, no matter where the net is installed. An object of the present invention is to provide a net set in which the net tension state is strong and stable all the time, and particularly no wrinkles are produced at the end near the net column, and the net is easy to assemble.

In the present invention, the net itself can be stretched strongly without using an elastic member for stretching the net in particular, and is in a state of a front-rear frame and a bow that protrudes upward. A net support structure in which a left-right frame and a support frame are connected to each other, and an elastic restoring force of the support frame and the left-right frame is obtained by connecting the support frame to the left-right direction frame with the support frame tilted outward. The net support structure that can be biased to open the upper end side of the support frame outward and the net can be stretched, and the support frame while pulling back the support frame of the net support structure inward. a net having a insertable cylindrical portion frames in the left and right ends, the tubular portion is a fabric lacks elasticity, the in the cylindrical portion Without Fukuronui the portion corresponding to the upper end face of the pillar frame, wherein the fabric of the separate upper end face of the strut frame abuts arranged in a direction perpendicular to the net Zhang設面, fabric of the separate inverse U The main feature is that it is composed of a net that is bent into a letter shape and sewn and fixed to the upper end of the cylindrical portion.

The support frame may be linear, and may be connected to the left-right frame at an obtuse angle of 93 to 100 degrees.

  The left-right frame may be separable into two or more parts, and the joint may be fitted so as not to be relatively rotatable.

The frames are connected to each other by elastic rubber strings, and it is preferable that a hook-and-loop fastener for allowing the frames to be stored and transported together is fixed.

  The net support structure of the present invention connects the left and right direction frames with each other in a state in which the support frame is inclined outward, so that the net is strongly stretched without using an elastic member for stretching the net. In addition, there is no deviation in the distance between the columns, and when installing the net at any place, the net tension state is always strong and stable, and the number of parts is not increased. .

  The net support structure of the present invention has a structure in which the left-right direction frame is formed in a bow-like state protruding upward, or the support frame is connected to the left-right direction frame at an obtuse angle of 93 degrees to 100 degrees. While simple, there is an advantage that the net can be maintained in a strongly stretched state.

  In the net support structure of the present invention, the left and right direction frame can be separated into two or more parts, so that it can be easily housed. By doing so, the upper end side of the column frame can be reliably urged to open outward by the elastic restoring force of the column frame and the left-right frame.

  The net set according to the present invention is a separate cloth with which the upper end surface of the support frame abuts without sewing a portion corresponding to the upper end surface of the support frame in the cylindrical portion of the net into which the support frame can be inserted. Is formed from a net fixed to the upper end portion of the cylindrical portion, so that no wrinkles occur at the left and right end portions of the net, and the net can be accurately and strongly stretched and is described in the cylindrical portion. There is no harm to the appearance of letters and logos.

FIG. 1 is a perspective view showing a net support structure and a net according to the present invention. Example 1 FIG. 2 is a perspective view showing a state when the net support structure of the present invention is assembled. Example 1 FIG. 3 is a perspective view showing a left-right frame of the net support structure of the present invention. Example 1 FIG. 4 is a perspective view showing a connecting portion at the center of the left-right frame of the net support structure of the present invention. Example 1 FIG. 5 is a front view showing a state of elastic deformation of a rigid frame composed of a left-right frame and a support frame of the net support structure of the present invention. Example 1 FIG. 6 is a perspective view showing a state in which each frame of the net support structure of the present invention is stored separately. Example 1 FIG. 7 is a perspective view showing a state where the net support structure of the present invention and the net are assembled for badminton or valley use. Example 1 FIG. 8 is a perspective view showing a state where the net support structure of the present invention and the net are assembled for tennis. Example 1 FIG. 9 is a perspective view showing an end portion (such as a cylindrical portion) of the net in the vicinity of the column of the present invention. Example 1 FIG. 10 is a perspective view showing the internal structure of the cylindrical portion of the net of the present invention. Example 1 FIG. 11 is a front view showing a state of elastic deformation of a rigid frame composed of a left-right frame and a support frame of the net support structure of the present invention. (Example 2)

A horizontal frame that is installed in a horizontal direction parallel to the net tensioning surface and has an upwardly convex shape, a front-rear frame that is installed in a direction crossing the net tensioning surface, In a net support structure in which a support frame installed in a direction is connected to each other, the support frame and the left-right frame are elastically connected by connecting the support frame to the left-right frame with the support frame tilted outward. By making it possible to urge the upper end side of the support frame to open outwards by restoring force, and to allow the net to be stretched, the structure is simple with a minimum number of parts, and in any installation location In addition, we have realized a net support structure that can stably obtain a net tensioned state.

  Further, (1) the net support structure, and (2) a cylindrical portion into which the support frame can be inserted while pulling back the support frame of the net support structure inward are provided at the left and right ends. A separate cloth with which the upper end surface of the column frame abuts is fixed to the upper end portion of the cylindrical portion without sewing a bag portion corresponding to the upper end surface of the column frame in the cylindrical portion. A net set is constructed from the net, it is easy to assemble, and there are no wrinkles at the left and right ends of the net, and the net can be stretched accurately and strongly, as described in the cylindrical part A net set that does not harm the appearance of characters and logos has been realized.

  FIG. 1 is a perspective view showing an embodiment of a net set composed of a net support structure 10 and a net 20 embodying the present invention, wherein 1a to 1d are in a horizontal direction parallel to the stretched surface of the net. Left and right direction frames to be installed, 2a to 2d are front and rear direction frames to be installed in a direction intersecting with the stretched surface of the net, and 3a to 3d are column frames to be installed in the vertical direction.

  First, the net support structure 10 of this embodiment will be described. Each of the frames 1a to 1d, 2a to 2d, and 3a to 3d has a diameter of 19 mm to 22 mm and a thickness of 1 mm to 1.2 mm. It is composed of an iron pipe that is advantageous in terms of ease, strength, weight, etc., and is provided with a rigid strength to support the net 20 by being connected to each other and to exhibit an elastic restoring force that strongly stretches the net 20. It has become.

  1 and 2, the left-right frame 1 a arranged at the right end includes a connecting pipe portion 4 formed by welding a total of three pipes facing the front-rear direction and the upper direction at the right end portion. The inner end portions of the direction frames 2a and 2b and the lower end portion of the lower support frame 3a can be fitted and connected to each other.

  The angle θ1 formed between the support frame 3a connected to the upper side of the connection pipe 4 and the left-right frame 1a is an obtuse angle of about 95 degrees, and is connected to the support frame 3a and its upper end. The support frame 3b is connected to the left-right frame 1a in an inclined state.

  In addition, an angle θ2 formed by the front and rear direction frames 2a and 2b connected to the front and rear of the connection pipe portion 4 and the support frame 3a is an obtuse angle of about 97.5 degrees, and the connection pipe portion 4 is slightly lifted from the horizontal installation surface (about 4 cm in the present embodiment), and only the outer end portions (more specifically, resin caps fitted into the outer end portions) of the front and rear direction frames 2a and 2b are installed surfaces. To act as a leg in contact with

  Similarly, in FIG. 1 and FIG. 2, the left-right frame 1c arranged at the left end includes a connecting pipe portion 4 formed by welding a total of three pipes facing the front-rear direction and the upper side to the left end portion. The inner end portions of the front and rear direction frames 2c and 2d and the lower end portion of the lower support frame 3c can be fitted and connected to each other.

  The angle θ1 formed between the support frame 3c connected to the upper side of the connection pipe 4 and the left-right frame 1c is an obtuse angle of about 95 degrees, and is connected to the support frame 3c and its upper end. The support frame 3d is connected to the left-right frame 1c while being inclined outward.

  The support frame 3a (3c) and the left-right frame 1a (1c) are connected to each other at an obtuse angle of 93 degrees to 100 degrees by adding a proper tension to the net 20, 20 is preferable in order to stably and stably stretch 20.

  In addition, an angle θ2 formed between the front and rear direction frames 2c and 2d connected to the front and rear of the connection pipe portion 4 and the support frame 3c is set to an obtuse angle of about 97.5 degrees, and the connection pipe The portion 4 is slightly lifted from the horizontal installation surface (about 4 cm in the present embodiment), and only the outer end portions (more specifically, resin caps fitted into the outer end portions) of the front and rear direction frames 2c and 2d are installed. It acts as a leg in contact with the surface. Accordingly, the net is stable even when the net installation surface is not flat.

  1 and 2, the frames 1a, 1b, 2a, 2b, 3a, 3b arranged on the right side from the center do not get lost in the frame assembling procedure when the net support structure 10 is assembled. In addition, in order to maintain the assembled state of the frame, and for the convenience of storing the frame, the frames are connected to each other by the elastic rubber cord 5 so as to maintain the coupled state of the frames. Yes.

  Similarly, in FIGS. 1 and 2, the frames 1 c, 1 d, 2 c, 2 d, 3 c, 3 d arranged on the left side from the center are connected to each other by the elastic rubber cord 5 so as to maintain a coupled state. . The screw 5a shown in FIG. 3 is for fixing the end of the elastic rubber string 5, and the end of the elastic rubber string 5 is fixed to the other frame by a known fixing means.

  The inner ends of the left and right frames 1a (1c) arranged at both ends of the net are reduced diameter portions 6 as shown in FIG. 3, and a concave groove 6a extending in the longitudinal direction from the inner end on the upper side. Is formed. And when the said diameter reduction part 6 is inserted by the outer end part of the left-right direction flame | frame 1b (1d) arrange | positioned more inside, the bottom part of the ditch | groove 6b recessedly formed in those left-right direction frames 1b (1d) Has come to accept.

  Accordingly, the joint between the left-right frame 1a (1c) and the left-right frame 1b (1d) disposed inside the left-right frame 1a (1c) is formed in the left-right direction by the upper surface of the groove 6a and the rear surface of the groove 6b (the groove 6b). The protrusions formed inside the frame 1b (1d) are engaged with each other along the longitudinal direction of the two frames, so that they are fitted so as not to be relatively rotatable.

  Further, the left and right direction frames 1b and 1d arranged on the inside are different from the other frames in a straight line shape, and are convex upward (so that the portion where the groove 6b is formed is on the upper side). The curve is formed with a curvature of R3000 (mm).

  The inner end of the left-right frame 1b arranged at the center of the net is a reduced diameter portion 7 as shown in FIG. 4, and a locking projection 7a is attached to the upper side by a spring from below. The protrusion is formed in a biased state. Then, when the locking projection 7a is pressed down and the reduced diameter portion 7 is inserted into the inner end of the other left-right frame 1d disposed at the center of the net, it is transparently provided above the left-right frame 1d. The locking projection 7a is engaged with the engaging hole 7b.

  Accordingly, the joint between the left-right frame 1b and the left-right frame 1d corresponding to the center portion of the net cannot be relatively rotated by the engagement of the locking projection 7a and the engagement hole 7b. The four right and left direction frames 1a to 1d are integrated so as to form a single rigid pipe, and the length between both ends thereof is set to about 3 m.

  The left and right direction frames 1a to 1d that are connected to each other in a state in which relative rotation is impossible are in a bowed shape that protrudes upward as shown in FIG. 5 (a), and the column frames 3a and 3b and The column frames 3c and 3d are supported in an inclined state (in a state where the column frames 3b and 3d are inclined to the outside by about 15 cm, respectively).

  The four support frames 3a to 3d and the four left and right frames 1a to 1d are connected to each other and integrated to form a rigid net support structure, and the support frames 3a, 3b and As shown in FIG. 5B, the support frames 3a to 3d and the left-right frame 1a are exhibited when the support frames 3c and 3d are in an upright state (retracted by about 15 cm each at the tip). ˜1d elastic restoring force (restoring force to return the rigid frame from the elastically deformed state to the original state) can be urged to open the upper end side of the column frames 3a to 3d outward. Yes.

  Note that a hook-and-loop fastener 8 is fixed to the front and rear frames 2b and 2d. As shown in FIG. 6, when the net support structure 10 is stored, the right half frames 1a, 1b, 2a, 2b, 3a, 3b and the left half frames 1c, 1d, 2c, 2d, 3c, 3d can be individually stored and transported together.

  As shown in FIG. 7, the net support structure 10 configured as described above has a column height of about 155 cm when the column frames 3b and 3d are connected to the upper side of the lower column frames 3a and 3c. By attaching 20, it can be used for badminton, ballet practice and other games.

  As shown in FIG. 7, the elastic restoring force exerted by the rigidity of the column frames 3a to 3d and the left and right frames 1a to 1d in a state where the net 20 is stretched is about 2.5 kg. 20 can be constantly maintained stably in a state where 20 is strongly stretched.

  On the other hand, with the column frames 3b and 3d constituting the upper side of the column removed from the column frames 3a and 3c constituting the lower side of the column, the height of the column is about 91.4 cm, as shown in FIG. It can be used for tennis practice etc. by attaching the net 20 to.

  Then, in the state where the net 20 is stretched as shown in FIG. 8, the elastic restoration exhibited by the rigidity of the two column frames 3a and 3c below the column and the four left and right frames 1a to 1d. The force is about 5 kg, and the net 20 can be maintained tightly.

  That is, the net support structure 10 according to the present embodiment can easily stretch the net 20 without selecting a location even when the net 20 itself is not substantially stretchable. Sports and games that can be handled by changing the height can be easily diversified.

  Next, a detailed structure of the net 20 that can be suitably used with the net support structure 10 of the present embodiment will be described.

  The net 20 of the present embodiment is suitable for displaying a character or a logo or the like sewn on the net body 21 formed by knitting resin yarn lacking in elasticity and the left and right ends (longitudinal ends). It is comprised from the cylindrical part 22 made from cloth lacking in elasticity.

  That is, the net 20 of the present embodiment is configured without using a flexible elastic material such as rubber for the net itself, so that wrinkles due to the shrinkage of the rubber do not always occur, and the rubber elasticity deteriorates with time. Therefore, the dimensional change hardly occurs and the stretched state of the net 20 is always stable.

  The cylindrical portion 22 has an open lower end, and as shown in FIGS. 1 and 7 to 9, the column frames 3 b, 3 d on the upper side from the lower end side of the cylindrical portion 22, or connected to the cylindrical portion 22. The column frames 3a and 3b or the column frames 3c and 3d, which are overlapped with each other, can be inserted while being pulled back inward against the elastic restoring force.

  On the other hand, an inverted triangular reinforcing cloth 23 is sewn inside the upper end portion of the cylindrical portion 22, and the upper end surfaces of the support frame 3b, 3d (more precisely, the support frames 3b, 3d). Only the portion corresponding to the upper end surface of the resin cap 9 fitted on the upper end is opened without bag sewing.

  As shown in FIG. 10, on the inner surface of the cylindrical portion 22 corresponding to the upper ends of the support frames 3b and 3d, the support frames 3b and 3d (the support frame in the case of the tennis net shown in FIG. 8). 3a, 3c) is a band-like separate cloth 24 with which the upper end surfaces thereof are in contact with each other.

  Since the net 20 adopts the above-described form, the upper end portion of the tubular portion 22 is not deformed and wrinkles are not caused when attached to the support column, and the entire net 20 can be stretched accurately and strongly. It does not harm the appearance of the characters, logos, trademarks, etc. described in the cylindrical portion 22.

  The net support structure 30 of the second embodiment shown in FIG. 11 is configured to be integrated by connecting a plurality of separated frames in the same manner as the net support structure 10 of the first embodiment. The left and right direction frame 31 is formed so as to be substantially linear in the connected state, and in the state where the net 20 is not attached, as shown in FIG. Connected in an inclined state.

  The connection angle θ1 between the left-right frame 31 and the support frame 33 is about 95 degrees as in the first embodiment, and both the support frames 33 are inclined outward (preferably about 10 cm to about each). 11 (b) is a state in which the left and right direction frame 31 is elastically deformed so as to protrude slightly downward when the net 20 is attached with the pillars upright as shown in FIG. 11 (b). It becomes.

  Then, the strut frame 33 inclined outward is pulled back inward as shown in FIG. 11B, and the net 20 is stretched, so that the strut frame 33 and the left-right frame 31 exhibit the rigidity. The elastic restoring force is about 2.5 kg as in the first embodiment, and can maintain the net 20 in a tight tension state.

  In the first embodiment and the second embodiment, the support columns 3a, 3c, 33 are linear, but the support frames 3a, 3c, 33 curved so as to open outwardly are used. It is also possible to carry out by setting the connection angle θ1 with 1c (31) to about 90 to 95 degrees.

  In this case, a structure that makes the relative rotation impossible (for example, a structure that uses the recessed grooves 6a and 6b or the locking projections 7a and the engaging holes 7b) is appropriately employed for the connecting portions of the support frames 3a, 3c, and 33. .

  Moreover, in the said Example 1 and Example 2, although the connection pipe part 4 was provided in the left-right direction flame | frame 1a, 1c (31) of both ends, it implemented similarly to the lower end part of support | pillar frame 3a, 3c (33) This may be carried out by providing the connecting pipe part, or by providing the connecting pipe part in the front-rear direction frames 2a to 2d and connecting another frame to the connecting pipe part.

  The present invention is not limited to the above embodiments, and the materials, dimensions, strengths, connection angles, connection methods, and the like of the frames 1a to 1d, 2a to 2d, and 3a to 3c without departing from the spirit of the present invention. It is also possible to appropriately change the above, to omit the elastic rubber string 5, or to use a solid bar instead of the pipe material.

  As shown in FIG. 7, the elastic restoring force exerted by the rigidity of the support frame 3a-3d and the left-right frame 1a-1d with the net 20 stretched is about 2-4 kg. It is suitable and can be appropriately selected in consideration of the strength of each frame and the size and weight of the net 20.

  In addition, the net support structure of the present invention can stretch the net strongly and stably without incorporating a flexible elastic material such as rubber into the net itself. The use of the built-in net is not excluded, and even such a net can be stretched.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used in manufacturing a net support structure and a net set that can be used for sports or games using nets such as badminton, tennis, and volleyball.

DESCRIPTION OF SYMBOLS 1a-1d Left-right direction frame 2a-2d Front-back direction frame 3a-3d Support | pillar frame 4 Connection pipe part 5 Elastic rubber string 6 Reduced diameter part 6a Groove 6b Groove 7 Reduced diameter part 7a Locking protrusion 7b Engagement hole 8 Surface fastener 9 Cap 10 Net support structure (Example 1)
20 Net 21 Net body 22 Cylindrical part 23 Reinforcement cloth 24 Separate cloth 30 Net support structure (Example 2)
31 Left-right frame 33 Prop frame

Claims (4)

(1) a left-right frame that is installed in a horizontal direction parallel to the tensioning surface of the net and has a bow-like shape that protrudes upward;
A front-rear frame installed in a direction crossing the net tensioning surface;
A net support structure in which a support frame installed in a vertical direction is connected to each other,
By connecting the support frame to the left and right direction frame in a state where the support frame is inclined outward, it is possible to bias the upper end side of the support frame to open outward by the elastic restoring force of the support frame and the left and right direction frame, A net support structure that can stretch the net;
(2) A net provided with cylindrical portions into which left and right column frames can be inserted while pulling back the column frame of the net support structure inward,
The tubular portion is made of a cloth lacking in elasticity, and a separate cloth with which the upper end surface of the support frame abuts is sewn without sewing a portion corresponding to the upper end surface of the support frame in the tubular portion . A net that is arranged in a direction orthogonal to the tensioning surface, and is composed of a net that is separately sewn to the upper end of the cylindrical part and is fixed in a reverse U-shape. set.   The net set according to claim 1, wherein the support frame is linear and is connected to the left-right frame at an obtuse angle of 93 to 100 degrees.   3. The net set according to claim 1, wherein the left-right frame is separable into two or more parts, and the joint part is fitted so as not to be relatively rotatable. .   The said each frame is mutually connected by the elastic rubber cord, Furthermore, the hook_and_loop | surface fastener for making it possible to store and convey these each frame collectively is being fixed. The net set according to any one of the items.

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