JP6088718B2 - Grating, gripped grating and manufacturing method of grating - Google Patents

Description

  The present invention relates to a grating, a grating with a handle, and a manufacturing method of the grating. More specifically, in the grating formed by connecting a plurality of main bars by the connecting portion, while maintaining the strength against the load from above, the weight is reduced to facilitate maintenance, and the assembly work at the time of manufacture is reduced. It relates to products that have been reduced to improve productivity.

  Grating is widely used, for example, metal is used as a drain cover for roads and kitchen floors, and synthetic resin is used as a cover for drains such as pools and bathrooms. Yes. In particular, the latter grating is required to have a sufficient and sufficient proof strength against the load from above mainly when a person rides, and to be relatively lightweight, considering safety and ease of maintenance. Yes. Moreover, when commercializing, it is necessary to consider the ease of assembly at the time of manufacture so as to be advantageous for mass production.

  As an example of such a grating, there is a grating disclosed in Patent Document 1 proposed by the present inventor. This grating prevents the operator from tipping over by preventing a large slip even when a load is applied in the longitudinal direction when the shoe sole of the worker contacts the upper surface of the wet main bar in a kitchen or the like. The main purpose is to relax, and it has a structure with an anti-slip member, but the connection structure that connects the main bars is also characteristic.

  That is, as described in FIGS. 3 and 4 of the specification of Patent Document 1 and paragraph numbers [0024], [0025], and [0026], the support bar wall of the main bar is equally spaced in the longitudinal direction. A plurality of through holes are formed. Each of these through holes is passed through a square pipe-shaped metal guide tube and a metal round bar-shaped connecting bolt inserted through the guide tube. The guide tube is just inserted into the through hole, and is fixed in that state.

  Cylindrical spacers made of synthetic resin are arranged between the main bars, and both the guide tube and the connecting bolt are passed through the spacers. The guide tube is a member for receiving load from above and ensuring load resistance. In addition, almost no load is applied to each connecting bolt, and each connecting bolt is tightened by screwing a nut to each connecting bolt protruding outward from each main bar arranged at one end. Can be tight.

Japanese Unexamined Patent Publication No. 2011-1801

However, the conventional grating has the following problems.
That is, as a member for connecting the main bars, not only a metal connecting bolt but also a metal guide tube for receiving load from above and ensuring load resistance. As described above, the connecting bolt hardly receives the load from above, and bears the function of binding the components, and the strength against the load is ensured by the guide tube. As described above, since the guide tube is provided as a component of the connecting portion, the entire weight of the grating is relatively heavy, which is disadvantageous because it is difficult to handle in terms of maintenance such as cleaning.

  Moreover, since there are many parts which comprise a connection part by the part with a guide pipe | tube, the assembly process increased at the time of manufacture. Furthermore, since the connecting bolt is a round bar and the connecting bolt itself freely rotates in the axial direction with respect to the insertion hole, a box wrench is arranged at both ends of the connecting bolt to tighten the nut at the end. It was necessary to work while stopping the bolt head. For this reason, it takes time and effort during manufacturing, and it is difficult to work, and there is room for improvement in productivity during manufacturing.

  The present invention was devised in view of the above points, and in a grating formed by connecting a plurality of main bars by a connecting portion, in order to facilitate maintenance while ensuring strength against a load from above. Another object of the present invention is to provide a grating, a grating with a grip, and a manufacturing method of a grating that reduce the weight and reduce the assembling work at the time of manufacturing and improve the productivity.

(1) The present invention comprises a plurality of main bars having a plurality of insertion holes at a predetermined interval in the longitudinal direction, arranged in parallel and at the same height at a predetermined interval, and a rectangular shape whose cross-sectional shape is long in one direction. A connection bolt that is passed through the insertion hole of the bar so that its cross-sectional shape is vertically long and does not rotate in the axial circumferential direction, a spacer that is passed through the connection bolt and disposed between the main bars, and a connection bolt The grating is provided with one or both ends and a fixture that fixes the main bar to the connecting bolt at a required interval.

(2) In the present invention, the insertion hole is formed by four sides, and in each side, a pair of sides facing the up and down direction are linear and parallel to each other in the cross-sectional shape of the connecting bolt. It is provided so as to have substantially the same length as the short side and at the same interval as the length of the long side, and a pair of sides on the other long side is formed to bulge outward. The grating of (1) above.

  In this case, the operation of inserting the connecting bolt into the insertion hole is facilitated. That is, when the shape of the insertion hole is a so-called barrel shape as in the present invention, when a rectangular connection bolt having a long cross-sectional shape in one direction is inserted into the insertion hole, the linear short of the connection bolt. There is almost no gap between the side portion and the straight short side portion of the insertion hole, but between the linear long side portion of the connecting bolt and the long side portion formed so as to bulge outside the insertion hole. Has a relatively large gap. In addition, the shape of the mouth portion of the insertion hole is not limited to a barrel shape, but may be various polygonal shapes such as a rectangular shape (including a square shape) if the connecting bolt does not rotate in the axial direction when the connecting bolt is passed. There is no particular limitation. In addition, the “rectangular shape that is long in one direction” refers to a rectangular side whose one set of facing sides is longer than the other set of sides.

  According to this, when inserting the connecting bolt into the insertion hole, the operator only has to incline the work of aligning the short side portions, and since the long side portions have gaps, the long side portions are difficult to contact in the first place. The pair can be inserted with little problem even if they are a little loose. In addition, the connecting bolt does not rotate in the axial direction after insertion. That is, for example, the cross-sectional shape of the connecting bolt and the shape of the insertion hole are both rectangular shapes having substantially the same size, and the grating according to the present invention is connected in comparison with the case where there is almost no gap between the side portions. Since the front end of the bolt can be easily matched with the shape of the insertion hole, it is easy to insert the bolt, so that it is possible to reduce the time and effort of assembling at the time of manufacturing and improve productivity.

(3) According to the present invention, the main bar has a T-shaped or substantially T-shaped cross section including a horizontal portion and a vertical portion, and the insertion hole is formed in the vertical portion. It is a grating.

  In this case, a gap between the main bars having a T-shaped or substantially T-shaped cross section is formed between the T-shaped horizontal portions of the adjacent main bars. Therefore, the locking portion of the base portion of the grating handle, which will be described later, can be easily locked from below on the lower surface side of the portion of the main bar at which the gap is interposed. In addition, because of the action of the vertical portion of the T-shape, it becomes strong against the load from above, so it has excellent functionality as a grating that requires durability against the load. In addition, the cross-sectional shape of the main bar is not particularly limited, and various shapes can be adopted as long as the upper surface has excellent usability and safety.

(4) The present invention provides the grating according to any one of the above (1), (2) or (3), and the width of the gap between the main bars of the grating having the required length and to be attached. A knob part that is wider and can be placed on the upper surface of the main bar so as to fit in the gap, and is formed at a required position on the lower surface part of the knob part in a direction perpendicular to the longitudinal direction of the knob part. Neck having a diameter smaller than the width of the gap, and a locking portion formed at the tip of the neck at a predetermined angle with the knob portion in the axial direction of the neck and longer than the gap of the main bar and narrower than the gap The key part is inserted into the gap from above with the direction of the locking part of the key part aligned with the direction of the gap between the main bars, and the neck part is rotated in the axial direction of the neck part according to the height of the gap. The width of the gap between the main bars by changing the direction of the locking part Grating handle attached to the grating so that it is longer than the width of the gap, placed on the top of the main bar so that the knob fits into the gap, and stops moving in the rotational direction of the knob And a grating with a handle.

The action of the grating with the handle is as follows in addition to the action of the grating.
The grating handle of the grating with the handle is formed by aligning the direction of the locking part of the main part with the direction of the gap between the main bars (bar members) and inserting it into the gap from above, and adjusting the neck to the height of the gap. Since the diameter is smaller than the width of the gap (the interval between the portions forming the gap in the adjacent main bars), the grating handle can be rotated in the axial direction of the neck. In addition, the cross-sectional shape of the neck portion is not particularly limited as long as it can be rotated in the axial circumferential direction at a position corresponding to the gap, and may be an ellipse, a polygon such as a hexagon, an octagon, or the like, and is particularly limited. It is not a thing.

  Thereby, the direction of a knob part and a latching | locking part also changes, and a latching | locking part becomes longer than the width | variety of the gap | interval in the width direction of the clearance gap between main bars. Further, the grating handle is mounted on the grating by being placed on the upper surface of the main bar so that the knob portion is slidably fitted in the gap and the knob portion does not move in the rotation direction.

  It should be noted that the removal of the grating handle from the grating can be performed easily by following the procedure that is generally the reverse of the above installation procedure, but it cannot be removed unless the procedure is followed. There is almost no fall off. In this way, in the grating with a handle, if the handle is damaged or the movement is disturbed and it is necessary to replace the handle, it is necessary to remove the defective handle and attach a new good handle. It is easy and the grip for gripping can be easily replaced.

  By attaching the grip for gripping as described above, it is possible to attach to the gap between any adjacent main bars of the grating in a slidable manner along the gap. Since the grip for gripping can be slid when attached, for example, when used in the bathroom, even if the user's foot hits, it can escape in the sliding direction, and there is an advantage that it is hard to be injured. .

  Further, in the grating, the position and the number of the grating grips can be set as appropriate. A grating with a handle is formed by attaching a grating handle to the grating. Grating with a handle is mounted | worn with and used for the receptacle of drains, such as a pool and a bathroom, for example.

  Since the gripping handle for the grating cannot be passed through the gap in the mounting state, the locking portion of the main part located below the gap between the main bars cannot pass through the gap. It can slide along the gap. And when removing a grating with a handle from a receiving fixture, such as when cleaning a drain ditch, it carries out as follows.

  First, slide the grating handle as described above, and when the base member hits the connecting part that connects each main bar, put the finger on the end opposite to the sliding direction of the knob part, pull it up, Try to pinch the part. Note that it is not always necessary to perform the above-described process. For example, the grating handle may be stopped from sliding with a finger of one hand and may be similarly lifted with the finger of the other hand.

  As a result, the grip for gripping abuts the end portion of the knob portion opposite to the pulling side against the upper surface of the main bar, and tilts with this as a fulcrum, and the basic portion also rises. As a result of this rise, the neck of the trunk portion first passes through the gap. Moreover, since the latching | locking part is longer than the width | variety of the gap | interval of a main bar, it latches on the lower surface of the part which forms the clearance gap, and cannot pass through a clearance gap. Therefore, by holding the grating handle and pulling it up, the grating with the handle can be lifted and removed from the holder.

(5) In the present invention, the knob portion is formed on the upper surface of the main bar so that the upper surface of the knob portion and the upper surface of the main bar are flush or substantially flush with each other (4 ) Grating with handle.

  In this case, when the knob portion is placed on the upper surface of the main bar and the grating handle is attached to the grating, the knob portion does not protrude from the upper surface of the main bar or the amount of protrusion decreases. Therefore, for example, when the grating with handle is attached to the drainage groove of the bathroom, the user's foot is caught on the knob portion, so that the use is not disturbed, and it is easy to use and excellent in safety.

(6) In the present invention, a rectangular connecting bolt having a long cross-sectional shape in one direction is inserted into each insertion hole of the main bar having a plurality of insertion holes at a predetermined interval in the longitudinal direction so that the cross-sectional shape is vertically long. A step of inserting without rotating in the axial direction, a step of alternately attaching a spacer to the connecting bolt, and then attaching another main bar so as to insert an insertion hole in the connecting bolt; And a step of fixing the main bar to the connecting bolt with a fixture provided at one or both ends of the connecting bolt when the required number of main bars are attached to the connecting bolt.

  According to this manufacturing method, when the connecting bolt is passed through the insertion hole, it does not rotate in the axial circumferential direction. Therefore, when the fixture is particularly useful by rotating like a nut, When turning the fixing tool, it is not necessary to bother the rotation of the connecting bolt, and the assembling work can be simplified.

  In addition, since the spacer is externally fitted to the connecting bolt, when the main bar and each spacer are integrated in this state, the height of the spacer is substantially aligned along the longitudinal direction of the connecting bolt. In the case of a cylindrical shape, the horizontal position of the spacer is also aligned.

(Function)
The operation of the grating according to the present invention will be described.
The grating is assembled by fixing each main bar and the spacer along each connecting bolt in a state where the cross-sectional shape of each connecting bolt is a vertically long (vertical) rectangle. According to this structure, it is possible to reduce the weight of the grating. That is, if the length of the connecting bolt is the same and the cross-sectional area is the same (that is, if the weight is the same), the cross-sectional shape against the load from above is higher than that of a square or a horizontally long rectangle. Strength becomes stronger.

  Therefore, if the connecting bolt with a rectangular shape with a long cross-sectional shape is made to have the same strength as that of a square or a horizontally long cross-sectional shape, the cross-sectional area will be made smaller in the case of a similar shape. Therefore, the connecting bolt can be made lighter while securing the strength against the load from above. Therefore, it is possible to reduce the weight of the grating including a plurality of connecting bolts.

  Also, since the connecting bolt does not rotate in the axial direction when it is passed through the insertion hole, when the fixing tool is to be used especially by rotating like a nut, when turning the fixing tool, In addition, it is not necessary to stop the rotation of the connecting bolt, and the assembling work can be simplified.

  Since the spacer is externally fitted to the connecting bolt, if the main bar and each spacer are integrated in this state, the height of the spacer is almost aligned along the longitudinal direction of the connecting bolt. In the case of a shape, the horizontal position of the spacer is also aligned. As a result, the grating can be manufactured in a well-designed manner.

  In this way, since the cross-sectional shape can be supported by receiving a load from above on the grating only with a rectangular connecting bolt having a vertically long cross section, it is resistant to load as in a conventional square pipe-shaped guide tube. There is no need for a member for securing the weight, and the weight can be reduced accordingly. Furthermore, since the number of parts is reduced, it is possible to reduce the time and effort of assembling at the time of manufacturing, thereby improving the productivity at the time of manufacturing.

  In the grating formed by connecting a plurality of main bars by connecting portions, the present invention is lightened to facilitate maintenance while ensuring the strength against the load from above, and reduces labor during manufacturing. Therefore, it is possible to provide a grating, a grating with a handle and a manufacturing method of the grating with improved productivity.

It is a disassembled perspective explanatory drawing which shows the installation structure of the grating with a handle concerning this invention. It is a perspective view which shows the state which installed the grating with a handle. It is front view explanatory drawing which shows the connection structure of the main bar of the grating which comprises the grating with a handle. It is explanatory drawing which decomposed | disassembled the parts which comprise the connection structure of a main bar, and showed the method of a combination. (A) is side view explanatory drawing which shows the state which has penetrated the connecting bolt in the insertion hole of the main bar, (b) is side view explanatory drawing which shows the state which fitted the washer further and fastened the nut. It is a perspective view of the handle for gratings. The attachment procedure for the grating of the grip for gripping is shown, (a) is a partial cross-sectional explanatory view showing a state in which the main part is inserted into the gap of the main bar and rotated 90 ° around the main part, (b) is for grating It is a partial cross-section explanatory drawing of the state which dropped the handle and fitted the knob part in the guide recessed part of the upper surface of the main bar. It is a partial cross section explanatory view which shows the state which pulled up and inclined one side of the knob part of the grip for gratings.

The present invention will be described in detail based on the embodiments shown in the drawings.
(Grating G with handle)
A gripping G with a handle according to the present invention includes a grating 2 formed by combining a plurality of main bars 20 and spacers 21 and a grating handle 1 attached to the grating 2 (see FIGS. 1 and 3). . Each main bar 20 is made of synthetic resin, and in particular, the upper surface portion of the T-shaped horizontal portion 201 of the main bar 20 is formed by partially using a flexible and non-slip material. Note that the grating may be a single grating 2 in which the grating handle 1 is not attached to the grating 2.

(Grating 2)
Please refer to FIG. 1 to FIG.
The grating 2 includes a coupling portion (a tubular spacer 21, a coupling bolt 22, and a nut 24, which is a fixture, so that a plurality of main bars 20 having a T-shaped cross section are parallel to each other and have the same height. And are connected at a required interval. This connection structure will be described in detail later.

  Each main bar 20 includes a horizontal portion 201 and a vertical portion 202, and a gap 203 having a required width is formed between the horizontal portions 201 of the adjacent main bars 20 over the entire length. Further, in adjacent horizontal portions 201, guide concave portions 200 are formed over the entire length on both sides in the width direction of the upper surface at a position sandwiching the gap 203, leaving a part of the central portion.

  The depth of the guide recess 200 is formed to be about ½ the thickness of the abutment portion 111 of the knob portion 11 of the grating handle 1 described later (see FIGS. 3 and 7B). . In addition, the width of the guide recess 200 is formed so that the maximum width between the guide recesses 200 at the positions sandwiching the gap 203 in the adjacent main bars 20 is slightly wider than the width of the contact portion 111. When the contact portion 111 of the grating handle 1 is fitted in each guide recess 200, the grating handle 1 can be slid along each guide recess 200 in that state, and in the rotational direction around the trunk portion 12. Cannot rotate.

Here, with reference mainly to FIG. 3, FIG. 4, FIG. 5, the connecting portion composed of the spacer 21, the connecting bolt 22, and the nut 24 and the connecting structure of each main bar 20 by the connecting portion will be described in detail.
In the vertical portion 202 of the main bar 20, insertion holes 204 are formed at equal intervals in the longitudinal direction. The insertion hole 204 has a so-called barrel shape at the mouth.

  That is, the insertion hole 204 is formed of four sides, and in each side, a pair of sides 204a on the short side facing each other in the vertical direction is linear and parallel to each other, and the cross-sectional shape of the connecting bolt 22 And a pair of side portions 204b on the other long side portion are curved so as to bulge outward (see FIG. 5A). The shape of each side portion 204 b does not necessarily have a curved shape, and there is a gap between the long side portion 223 located on both sides of the square bar portion 220 and each side portion 204 b on the long side portion side of the insertion hole 204. As long as this is provided, the shape of the side portion 204 is not particularly limited. The shape of the insertion hole is not particularly limited, and may be a polygonal shape such as a hexagon in addition to the barrel shape.

  In the connection of the main bars 20, the connection bolts 22 are passed through the insertion holes 204. The connecting bolt 22 has a square bar part 220 having a required length and screw parts 221 provided at the centers of both ends of the square bar part 220. The cross-sectional shape of the square bar portion 220 is a rectangular shape that is long in one direction, and the short side portion 222 that is vertically positioned in use is fitted into each side portion 204 a on the short side portion side of the insertion hole 204. It is formed in a length that can be.

  In addition, since the long side portions 223 located on both sides of the square bar portion 220 are linear, there are gaps 205 between the curved side portions 204b on the long side portion side of the insertion hole 204. Is formed. The connecting bolts 22 are threaded so as to sew the insertion holes 204 of a plurality (nine in this embodiment) of the main bars 20. Further, between the vertical portions 202 of each main bar 20, a circular spacer 21 is arranged through a connecting bolt 22 (see FIGS. 3 and 4).

  In addition, the length of the square bar part 220 of the connecting bolt 22 is the thickness of the vertical parts 202 of all the main bars 20 when passing through the nine main bars 20 and the eight spacers 21 as described above. It is formed to be slightly shorter than the total length of all the spacers 21. The grating 2 is inserted into the threaded portions 221 at both ends of the connecting bolts 22 that are passed through the insertion holes 204 of the main bars 20, and the nuts 24 are screwed and tightened to tighten the main bars 20. And the spacers 21 are integrally formed.

  In addition, when the connecting bolt 22 is passed through the spacer 21 when assembled, the inner surface of the spacer 21 strikes against both corners 224 on the upper side of the square rod portion 220 of the connecting bolt 22 and is stabilized (see FIG. 5A). ). When the main bars 20 and the spacers 21 are integrated as described above in this state, the spacers 21 are cylindrical, so that the heights of the spacers 21 are aligned along the longitudinal direction of the connecting bolts 22. The horizontal positions of the spacers 21 are also aligned.

  Here, a manufacturing method of the grating 2 according to the present embodiment will be described. In addition, about the manufacturing method, although the description of the said structure has carried out fragmentary description about the required part, it demonstrates with the flow of a series of processes here.

(1) Insert the connecting bolts 22 into the plurality of insertion holes 204 of one main bar 20 so that the rectangular cross-sectional shape of the rectangular bar portion 220 is vertically long and does not rotate in the axial circumferential direction. To do. In addition, the long side part 223 located on both sides of the square bar part 220 is linear, and a gap 205 is formed between the curved side parts 204b on the long side part side of the insertion hole 204. Yes. Therefore, when inserting the connecting bolt 22 through the insertion hole 204, the operator only has to incline the work of aligning the short side portions 204a and 222, and the long side portions 223 and 204b are not easily in contact with each other because the gap 205 exists between them. Therefore, the long sides can be inserted with little problem even if they are slightly loose.

(2) The spacer 21 is externally fitted to the coupling bolt 22 so that the inner surfaces of the square side portions 224 on the upper side of the square bar portion 220 of each coupling bolt 22 are applied, and then the insertion hole 204 is fitted to each coupling bolt 22. The operation of mounting the other main bar 20 is repeated alternately.

(3) When the required number of main bars 20 and spacers 21 are attached to the connecting bolts 22, the main bars 20 at both ends are fixed with the washers 23 and nuts 24 provided at both ends of the square bar portion 220 of the connecting bolt 22. The main bars 20 and the spacers 21 are integrated with each other by tightening them in directions approaching each other and fixing them to the connecting bolts 22. Thereby, the grating 2 can be formed.

  Note that the connecting bolt 22 is not necessarily limited to a structure in which the nut 24 is screwed at both ends and the main bar 20 is fastened. In any case, the connecting bolt 22 cannot be rotated in the axial direction, so illustration is omitted. One of the two may be simply used as a stopper for retaining.

(Grating handle 1)
Please refer to FIG. 6 to FIG.
A gripping handle 1 attached to the grating 2 is a long and straight shape of a knob portion 11 having a required length and an intermediate portion in the longitudinal direction on the lower surface side of the knob portion 11 with respect to the longitudinal direction of the knob portion 11. The main part 12 is formed in a perpendicular direction downward. In a portion (boundary portion) where the trunk portion 12 is connected to the knob portion 11, a reinforcing portion 13 that is overlaid for reinforcement is formed. The position where the trunk portion 12 is provided is not limited to the middle portion in the longitudinal direction on the lower surface side of the knob portion 11, and may be shifted to both end sides in the longitudinal direction.

  In addition, in the case where the knob portion is long in one direction, the longitudinal direction of the knob portion means that the knob portion is provided between main bars 20a and 20b, which will be described later, in addition to the meaning of the longer passing direction. The meaning of the same direction as the longitudinal direction of main bar 20a, 20b when it fits in the clearance 203 is included. In addition, when the knob part has the same length in the vertical and horizontal directions (for example, a cross, square, or circle) in plan view, either the vertical or horizontal difference direction (in the case of a cross or square) Alternatively, the direction of an arbitrary diameter line (in the case of a circular shape) may be the longitudinal direction.

  The knob portion 11 is formed integrally with the elongated rectangular plate-like contact portion 111 on the lower surface side thereof, and is substantially the same length as the contact portion 111 and has a substantially semicircular cross section (see FIG. 7B). ) Fitting portion 112. The contact portion 111 is wider than the gap 203 of the grating 2 and is slidably fitted into the adjacent guide recess 200.

  In addition, the fitting portion 112 is formed to be slightly narrower than the gap 203, and is a portion that can be slidable with respect to the gap 203 and does not rotate in the rotation direction around the trunk portion 12. At both end portions of the fitting portion 112 in the longitudinal direction, finger hook portions 113 and 113a are formed by obliquely notching the lower side.

  The basic part 12 is provided with a neck 121 having a required length on the base side. The neck 121 has a round bar shape with a substantially circular cross section, and the outer diameter is formed to be slightly smaller than the width of the gap 203 of the grating 2. Thereby, by aligning the neck 121 with the position of the gap 203, the neck 121 can rotate in the axial direction in that state.

  A locking portion 122 is provided at the tip of the neck portion 121. The locking part 122 has a structure in which a rectangular parallelepiped block is integrated in two upper and lower stages, and the length of the lower block as an actual locking part is longer than the outer diameter of the neck part 121, that is, the width of the gap 203. And is formed so as to be shorter than the interval between the vertical portions 202 of the adjacent main bars 20a and 20b.

  Both ends in the longitudinal direction of the lower block of the locking portion 122 protrude in the longitudinal direction by an equal width from the upper block having the same length as the outer diameter of the neck portion 121 so as to be longer than the width of the gap 203. Is formed. The portion (reference numeral omitted) that protrudes from the upper block is a portion that is locked from below on the lower surface of the portion at the position sandwiching the gap 203 in the adjacent main bars 20a and 20b. A gap 203 is similarly provided between the other adjacent main bars 20 and 20.

  The locking portion 122 is formed at an angle of 90 ° with respect to the knob portion 11 in the axial circumferential direction of the neck portion 121. Furthermore, the width of the locking portion 122 is formed to be slightly narrower than the width of the gap 203 between the main bars 20a and 20b. Thereby, the latching | locking part 122 can pass through the clearance gap 203 by aligning a longitudinal direction with the direction of the clearance gap 203. FIG.

  Note that the grating handle 1 is entirely formed of a synthetic resin, but the material is not particularly limited, and may be formed of other materials such as metal or ceramic. Alternatively, it can be made by combining a plurality of materials such as metal and synthetic resin.

The grating handle 1 is attached to the grating 2 as follows.
Refer mainly to FIG.

First, the locking portion 122 of the trunk portion 12 of the grating handle 1 is inserted into the gap 203 from above with the direction of the gap 203 between the main bars (see FIG. 7A).
Next, the neck portion 121 of the trunk portion 12 is adjusted to the height of the gap 203, the grating handle 1 is rotated in the axial circumferential direction of the neck portion 121, the direction of the locking portion 122 is changed, and the main bars 20a and 20b are The length is made longer than the width of the gap 203 in the width direction of the gap 203 (see FIG. 7A).

  Then, when the grating handle 1 is lowered and the contact portion 111 of the knob portion 11 is fitted into the guide recesses 200 of the main bars 20a and 20b, the fitting portion 112 of the knob portion 11 is simultaneously positioned between the main bars 20a and 20b. It fits into the gap 203 (see FIG. 7B). Thus, the grating handle 1 can be easily attached to the grating 2.

  In this attached state, the grating handle 1 stops sliding in the rotational direction of the knob portion 11 (does not rotate in the rotational direction), and can slide along the guide recess 200 and the gap 203.

  Thus, the grating G with a handle is formed by attaching the grating handle 1 to the grating 2. The mounting position of the grating handle 1 is not particularly limited because the grating handle 1 can slide along the gap 203. Further, among the plurality of gaps 203 in the width direction of the grating 2, any gap 203 is attached between the main bars 20 sandwiched between them, or how many are attached.

(Function)
The operation of the grating G with a handle will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the grating G with a handle is used by being mounted on a receiver 3 attached to a drainage groove 4 such as a pool or a bathroom. In some cases, the receiving tool is not used, for example, by directly processing the edge of the drainage groove to form a receiving portion. The grating G with a handle is placed on the receiving portion 30 provided in the lower portion of the receiving member 3 which is a rectangular frame body embedded in the floor surface and has a gap in the width direction. It is installed with a margin. In FIG. 8, a gap is provided between the lower end portion of the grating 2 and the receiving portion 30 for convenience of illustration, but in actual contact. FIG. 2 shows a state where two gratings G with a handle are arranged in the longitudinal direction and set on the support 3.

  The grating 2 is assembled by fixing the main bars 20 and the spacers 21 along the connecting bolts 22 in a state where the cross-sectional shape of the square bar portions 220 of the connecting bolts 22 is a vertically long rectangle. . According to this structure, the grating 2 can be reduced in weight. That is, if the length of the connecting bolt is the same and the cross-sectional area is the same (that is, if the weight is the same), the cross-sectional shape against the load from above is higher than that of a square or a horizontally long rectangle. Strength becomes stronger.

  Therefore, when the strength against the load from above the rectangular connecting bolt 22 having a vertically long cross-sectional shape of the present invention is the same as that of a square or horizontally long rectangular cross-sectional shape, the cross-sectional area is made smaller. Therefore, the connecting bolt 22 can be made lighter while ensuring the strength against the load from above. Therefore, if the strength with respect to the load from above is used as a reference, the grating 2 including a plurality of connection bolts 22 can be further reduced in weight.

  Further, when the connecting bolt 22 is passed through the insertion hole 204, the upper and lower side portions 222 are fitted into the side portion 204 a of the insertion hole 204, so that it does not rotate in the axial circumferential direction. Therefore, in the case of the nut 24 that is a fixing tool that is rotated and used, when the nut 24 is turned, it is not necessary to bother the rotation of the connecting bolt 22 and the assembly work can be simplified.

  The spacer 21 has a structure in which the inner side is applied to both corner sides 224 of the upper side of the square rod portion 220 of the connecting bolt 22 and is externally fitted to the connecting bolt 22, and the main bar 20 and each spacer 21 are kept in this state. When integrated, the height of the spacer 21 is aligned along the longitudinal direction of the connecting bolt 22 as described above, and the horizontal position is also aligned. Thereby, the grating G can be manufactured with good design.

  In this way, the square bar 220 can be supported by receiving a load from above on the grating with only the connecting bolt 22 having a rectangular shape with a vertically long cross section. Such a member for ensuring load resistance is not necessary, and the weight can be reduced accordingly. Furthermore, since the number of parts is reduced, it is possible to reduce the time and effort of assembling at the time of manufacturing, thereby improving the productivity at the time of manufacturing.

  By attaching the gripping handle 1 to the grating 1 as described above, the grating handle 1 can be attached to any gap 203 between the adjacent main bars 20 in a state that it can slide along the gap 203 and the guide recess 200. Is possible.

  Further, since the grating handle 1 can be slid at the time of installation, for example, when used in a bathroom, even if the user's foot hits it, it can escape in the sliding direction, resulting in injury. There are advantages that are difficult to do. In the first place, the knob portion 11 protrudes from the upper surface of the horizontal portion 201 of the main bar 20 only about 1/2 of the thickness of the abutting portion 111. Therefore, the knob portion 11 is hardly caught and is safe even if the foot hits it.

  When the grip 1 for grating is attached (when the knob portion 11 and the gap 203 are in parallel), the locking portion 122 of the trunk portion 12 positioned below the gap 203 between the main bars 20a and 20b passes through the gap 203. Therefore, the upper surfaces of the main bars 20a and 20b can be slid along the gap 203 or the guide recess 200 as described above without detaching from the grating 2. And when removing the grating G with a handle from the receiving fixture 3, such as when cleaning the drainage groove 4, it carries out as follows.

  First, the gripping handle 1 is slid, and when the basic member 12 hits the spacer 21 of the connecting portion for connecting the main bars 20, the finger hooking portion 113a at the end opposite to the sliding direction of the knob portion 11 is fingered. And pull it up to pinch the knob 11. As a result, the grip 1 for the grating is in contact with the upper surface of the main bar 20a, 20b at the end opposite to the pulling side of the knob 11, tilted with this end as a fulcrum, and the trunk 12 is also raised (see FIG. 8). ).

  As a result of this rise, the neck 121 of the trunk 12 first passes through the gap 203. Moreover, since the latching | locking part 122 is longer than the width | variety of the clearance gap 203 of the main bars 20a and 20b, it cannot latch through the clearance gap 203 latching on the lower surface of the part which forms the clearance gap 203. FIG. Accordingly, the gripping grip G with the handle can be lifted and removed from the support 3 by picking up the gripping handle 1 and further pulling it up.

When removing the grating handle 1 from the grating 2, it can be easily performed by reversing the above installation procedure. However, the grating handle cannot be removed unless the procedure is followed. It is rare for 1 to come off naturally.
As described above, in the grating G with a handle, if the grating handle 1 is damaged or the movement is hindered and the grating handle 1 needs to be replaced, the defective grating handle 1 is removed. Therefore, it is easy to attach the new grating handle 1 and the grating handle 1 can be easily replaced.

  The terms and expressions used in this specification are merely explanatory and are not limiting at all, and exclude terms and expressions equivalent to the features described in this specification and parts thereof. There is no intention to do. Further, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

G Grating with handle 1 Grating handle 11 Knob part 12 Core part 121 Neck part 122 Locking part 13 Reinforcing part 111 Abutting part 112 Fitting part 113, 113a Finger hook part 2 Grating 20, 20a, 20b Main bar 200 Guide concave part 201 Horizontal Part 202 vertical part 203 gap 204 insertion hole 204a side part 204b side part 205 gap 21 spacer 22 connecting bolt 220 square bar part 221 screw part 222 short side part 223 long side part 224 square side part 23 washer 24 nut 3 holder 30 Member 4 Drainage channel

Claims (4)

A plurality of main bars having a plurality of insertion holes at a required interval in the longitudinal direction, a plurality of main bars arranged in parallel and at the same height at a required interval, and a rectangular shape whose cross-sectional shape is long in one direction, in the insertion holes of the main bar, A connecting bolt that is passed in a state where the cross-sectional shape is vertically long and does not rotate in the axial circumferential direction, a spacer that is passed through the connecting bolt and disposed between the main bars, and one or both ends of the connecting bolt A grating provided with a fixture for fixing the main bar to the connecting bolt at a required interval ;
A knob having a required length, wider than the gap between the main bars of the grating to be attached, and capable of being placed on the upper surface of the main bar so as to fit in the gap; and It is formed at a required position on the bottom surface in a direction perpendicular to the longitudinal direction of the knob part, a neck part having a diameter smaller than the width of the gap between the main bars, and the knob part at the tip end of the neck part in the axial direction of the neck part. And a base portion having a locking portion longer than the width of the gap of the main bar and having a width narrower than the width of the gap, and the direction of the locking portion of the main portion is set to the gap between the main bars. The neck is inserted into the gap from above according to the direction, the neck is rotated in the axial direction of the neck according to the height of the gap, the direction of the locking portion is changed, and the gap in the width direction of the gap between the main bars is changed. Make the length longer than the width, and the knob will fit into the gap. In is placed on the upper surface of the main bar, and a grating for the handle that as the rotational movement of the knob stops attached to said grating so
Grating with a handle . The grating with a handle according to claim 1, wherein the knob portion is placed on the upper surface of the main bar so that an upper surface of the knob portion and an upper surface of the main bar are flush or substantially flush with each other . A knob portion having a required length and wider than the gap between the main bars of the grating to be attached, which can be placed on the upper surface of the main bar so as to fit in the gap, and a lower surface portion of the knob portion Is formed in a direction perpendicular to the longitudinal direction of the knob portion at a required position, a neck portion having a diameter smaller than the width of the gap between the main bars, and a predetermined angle with the knob portion in the axial direction of the neck portion at the tip of the neck portion. Formed with a backbone having a locking portion longer than the width of the gap of the main bar and having a width narrower than the width of the gap,
The direction of the locking portion of the backbone portion is aligned with the direction of the gap between the main bars and inserted into the gap from above, the neck portion is rotated in the axial direction of the neck portion according to the height of the gap, and the locking portion Change the direction so that the length in the width direction of the gap between the main bars is longer than the width of the gap, and the knob portion is placed on the upper surface of the main bar so that it fits in the gap. Can be attached to the grating so that it stops
Grating handle . When the knob portion is placed on the upper surface of the main bar, the upper surface of the knob portion and the upper surface of the main bar are formed to be flush with or substantially flush with each other.
The grating handle according to claim 3 .

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