Description GRATING
Technical Field
[1] The present invention relates to a grating, and more particularly to a grating where an upper side of a second partition member can easily be aligned to have the same height as upper sides of a frame member and a first partition member. Background Art
[2] In general, a grating, which is widely used as a cover of a drainage way to collect rainwater and is installed in roadways, residential areas, subways, etc., is usually comprised of a plurality of rectangular lattices.
[3] The rectangular lattice is comprised of bearing bars and cross bars. The bearing bars and the cross bars are installed to partition a rectangular margin of the grating in a per¬ pendicular direction. At this time, since the two installed bars have different gaps from each other, each of the resultant lattices has a rectangular shape.
[4] However, the gaps of the lattices are compact enough for walking persons, and vehicles such as cars, but the gaps are rather broad for transporting means having small wheels, such as baby carriages, wheelchairs, wheeled suitcases, shopping carts. Therefore, when a baby carriage or the like passes over a grating, the wheels of the baby carriage are often caught in the lattices of the grating. In such cases, the wheels cannot easily escape from the lattices due to the weight itself of the baby carriage or the stiffness of the rectangular lattices, and when the baby carriage is subject to an excessive force, the baby carriage may be turn over, or a person may be damaged from the accident.
[5] In order to solve the problem, the applicant of the present invention proposed a safety grating. The safety grating is disclosed in Korean Utility Model Registration No. 0328159. As shown in Figs. 1 and 2, the safety grating is comprised of a frame member 2, a plurality of main partition members 4 partitioning the frame member 2 in any one of a vertical direction and a horizontal direction, and sub-partition members 6 for densely partitioning rectangular spaces 8 formed by the frame member 2 and the main partition members 4, and/or the main partition members 4. That is to say, the problem that the wheels of baby carriages, wheelchairs, wheeled suitcases, shopping carts, or inline skates are caught in the safety grating 10 can be solved in a safety grating 10 since the sub-partition members 6 formed to be repeatedly bent in a lon¬ gitudinal direction densely partition the rectangular space 8.
[6] The sub-partition members 6 are installed by welding it to the main partition members 4 or the frame member 2. That is to say, as shown in Fig. 2, the top sides 7 of
the sub-partition members 6 is aligned to have the same height as that of the main partition members 4 and the frame member 2, and then the sub-partition members 6 is welded to the main partition members 4 or the frame member 2. [7] However, it is very intricate and difficult to align the sub-partition members 6 to have the same height as that of the main partition members 4 and the frame member 2 in the welding operation. In addition, so many welding points are required and the supporting forces thereof are insufficient since the sub-partition members 6 are supported by the portions welded to the main partition member 4 and the frame member 2.
Disclosure of Invention Technical Problem
[8] The present invention is designed to solve the problems of the prior art, and therefore it is an object of the present invention to provide a grating in which the top side of the grating can be aligned to have a uniform height.
[9] It is another object of the present invention to provide a grating capable for ensuring a sufficient supporting force and markedly reducing welding points thereof. Technical Solution
[10] In order to achieve the above mentioned object, the present invention provides a grating having a rectangular frame member, a plurality of first partition members for partitioning the frame member in any one of a vertical direction and a horizontal direction, the grating comprising supporting projections continuously formed, along the longitudinal direction of the first partition members, horizontally to both sides of the first partition members, and the inner sides facing sides of the first partition members in the frame members; and second partition members which are supported by the supporting projections and installed between the first partition members and between the first partition member and the frame member, respectively, and have the same height as the upper sides of the frame member and the first partition member.
[11] Preferably, the second partition members are repeatedly bent along the longitudinal direction of the first partition member to be sequentially in contact with the first partition members facing each other, or the first partition member and frame member facing each other.
[12] More preferably, the grating further comprises a fixing projection continuously formed, on the upper side of the supporting projections, horizontally to both sides of the first partition members, and the inner sides facing sides of the first partition members in the frame members, and a insertion slot formed on the second partition members so that the fixing projection can be inserted and fixed to the insertion slots when the second partition members are installed to be supported by the supporting
projections; and wherein the second partition members are supported by the supporting projections and the fixing projections.
[13] A grating according to another preferred embodiment of the present invention comprises fixing projections continuously formed, along the longitudinal direction of the first partition members, horizontally to both sides of the first partition members, and the inner sides facing sides of the first partition members in the frame members; and second partition members which are installed between the first partition members and between the first partition member and the frame member, respectively, which are bent along the longitudinal direction of the first partition member to be sequentially in contact with the first partition members facing each other or the first partition member and the frame member facing each other, which have a insertion slot capable of inserting and fixing the fixing projection to a portion in contact with the first partition members and the frame member, and which have the same height as the upper sides of the frame member and the first partition member.
[14] Here, the welding or pressing operation with the second partition members is easily performed as a groove which is formed in an end of the fixing projections along the longitudinal direction, get the end sharper. Brief Description of the Drawings
[15] These and other features, aspects, and advantages of preferred embodiments of the present invention will be more fully described in the following detailed description, taken accompanying drawings. In the drawings:
[16] Fig. 1 is a perspective view illustrating a grating according to a conventional art;
[17] Fig. 2 is a cross sectional view taken along line 11-11' of Fig. 1;
[18] Fig. 3 is a perspective view illustrating a grating according to a preferred embodiment of the present invention;
[19] Fig. 4 is a perspective view illustrating a first partition member of the grating according to the preferred embodiment of the present invention;
[20] Fig. 5 is a perspective view illustrating a second partition member of the grating according to the preferred embodiment of the present invention;
[21] Fig. 6 is a perspective view illustrating a first partition member of the grating according to another preferred embodiment of the present invention; and
[22] Fig. 7 is a perspective view illustrating a manufacturing process of the grating according to the preferred embodiment of the present invention. Mode for the Invention
[23] Hereinafter, preferred embodiments of the present invention will be described in detail referring to the accompanying drawings. Prior to the description, it should be understood that the terms used in the specification and appended claims should not be
construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Therefore, the description proposed herein is just a preferable example for the purpose of illustration only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
[24] Fig. 3 is a perspective view illustrating a grating according to a preferred embodiment of the present invention, Fig. 4 is a perspective view illustrating a first partition member of Fig. 3, and Fig. 5 is a perspective view illustrating a second partition member of Fig. 3.
[25] Referring to Figs. 3 through 5, the grating 100 is comprised of a frame member 20, first partition members 30 for partitioning the frame member 20, and second partition members 40 installed between the first partition members 30 or the first member 30 and the frame member 20.
[26] The frame member 20 is a rectangular frame having a predetermined height, a pre¬ determined length and a predetermined width. A supporting projection 24 and a fixing projection 26 are formed in an inner side 22 of the frame member 20 facing one side of the first partition member 30.
[27] The supporting projections 24 are continuously formed horizontally to the inner sides 22 along the longitudinal direction of the first partition members 30 so that the supporting projections 24 can support lower sides 42 of the second partition members 40.
[28] The fixing projections 26 are continuously formed horizontally to the upper side of the supporting projection 24. The fixing projections 26 configurationally engage with insertion slots 44 of the second partition members 40 so as to provide supporting forces to the second partition members 40.
[29] The first partition member 30 partitions the frame member 20 in any one of the vertical direction and the horizontal direction. That is to say, the first partition member 30 partitions the frame member 20 into a rectangular space 60. In addition, the first partition 30 is installed so that the upper side 32 of the first partition member 30 can have the same height as that of the upper side 27 of the frame member 20. This is intended to allow the upper side of the grating to have an even top side.
[30] As shown in Fig. 4, the first partition member 30 is provided with the supporting projections 24 and the fixing projections 26 which are formed on both sides of the first partition member 30. The supporting projection 24 and the fixing projection 26 will be not described here since they are described in detail above.
[31] As shown in Fig. 5, the second partition member 40 is installed in a rectangular
space 60 formed by the frame member 20 and the first partition member 30 to partition the rectangular space more densely. That is to say, the second partition member 40 is supported by the supporting projection 24 and the fixing projection 26 and therefore installed between the first partition members 30 and between the first partition member 30 and the frame member 20. The second partition member 40 is installed to have the same height of the upper side (46) as those of the upper side (32) of the first partition members 30 and the upper side (27) of the frame member 20. This is intended to have the even upper side of the grating 100.
[32] Preferably, the second partition member 40 are repeatedly bent along the lon¬ gitudinal direction of the first partition member 30 to be sequentially in contact with the first partition members 30 facing each other, or the first partition member 30 and frame member 20 facing each other.
[33] More preferably, the second partition member 40 includes insertion slot 44 where the fixing projection 26 is inserted and fixed when it is supported by the supporting projection 24, and then installed between the first partition members 30 and between the first partition member 30 and the frame member 20. That is to say, the insertion slot 44 is formed in portions where the second partition member 40 comes in contact with the first partition member 30 and the frame member 20, and the fixing projection 26 is inserted into the insertion slot 44 to provide a supporting force to the second partition member 40.
[34] In addition, Fig. 6 is a perspective view illustrating a first partition member 30a of the grating according to another preferred embodiment of the present invention. A groove 26b is formed in the end of a fixing projection 26a along its longitudinal direction. The groove 26b allows the end of the fixing projection 26a to get sharper, and therefore the first partition member 30a can easily be welded to the second member 40. That is to say, when the end of the fixing projection 26a gets sharper, the end melts effectively during the welding. In addition, if the first partition member 30a and the second partition member 40 are fixed by pressing them, the pressing operation can be easily performed because the end of the fixing projection 26a is sharp. Even though Fig. 6 shows the groove 26b formed in the fixing projection 26a of the first partition member 30a, the groove may also be formed in the fixing projection of the frame member 20.
[35] As described above, the grating of the present invention may have the markedly reduced number of welding points since the second partition member 40 is firmly supported by the supporting projections 24 and the fixing projections 26, 26a. That is to say, as the supporting projections 24 and the fixing projections 26, 26a support the second partition member 40 with respect to a vertical force, the number of welding points can be reduced.
[36] Now, a process of manufacturing the grating 100 according to the preferred embodiment of the present invention will be described with reference to Figs. 3 through 7.
[37] First as shown in Fig. 7, the frame member 20 where one longitudinal side is open is prepared, and then the first partition members 30 are installed in the frame member 20 at a predetermined distance. The predetermined distance is decided so that the second partition members 40 can be slid and installed between the first partition members 30, and jig or the like may be used to maintain the predetermined distance.
[38] Subsequently, the second partition members 40 are inserted between the first partition members 30 through the open side of the frame member 20. That is to say, the second partition member 40 is slid and installed between the first partition members 30 so that the lower side 42 of the second partition member 40 can be supported by the supporting projection 24, and the fixing projection 26 can be inserted into the insertion slot 44.
[39] As described above, the upper side 46 of the second partition member 40 may be easily aligned to have the same height as that of the upper side 32 of the first partition member 30 and the upper side 27 of the frame member 20 since the second partition member 40 is supported by the support projection 24 and the fixing projections 26.
[40] Next, the second partition member 40 is welded or pressed to the first partition member 30 or the frame member 20. Since each of the second partition members 40 are supported by the supporting projections 24 and the fixing projections 26, the required number of the welding point is markedly reduced, compared to the con¬ ventional grating. Therefore, time and cost required for welding may be markedly reduced.
[41] In addition, the present application describes that the second partition member 40 is supported by the supporting projection 24 and the fixing projection 26, 26a, but it may be supported by any one of the supporting projection 24 and the fixing projection 26, 26a. Industrial Applicability
[42] As described above, the grating according to the present invention has the following effects.
[43] First, the upper side of the second partition member may be easily aligned to have the same height as that of the upper side of the first partition member and the upper side of the frame member.
[44] Second, in the grating according to the present invention the second partition member may ensure a sufficient supporting force, and have a markedly reduced number of the welding point since it is supported by the supporting projection and the
fixing projection. In addition, the grating according to the present invention may improve productivity, and reduce the cost of production by reducing the number of the welding points.