TWI475777B - Rotating wiring box - Google Patents

Description

Screw cap wiring box

The invention relates to a wiring connection box, in particular to a screw-type wiring connection box which can be easily engaged or separated by rotating the cover.

At present, most of the wiring connection boxes used in construction projects are the "Modified Device for Electrical Pipe Connection Box" of the Republic of China No. 273352, which is a wiring connection box for locking the cover to the casing by means of a locking method. In terms of structure, it is very cumbersome to disassemble and install the cover plate. It is often inconvenient to disassemble and lock the cover plate through auxiliary tools before and after the addition or modification of the line. Also, it is like a new patent of the Republic of China. No. 319, 466, "Electrical Pipe Connection Box" discloses a wiring connection box that uses a pegboard and a tenon to bond the cover to the case. This structure makes it easier to bond the cover to the case. According to the contents of the manual and the drawings, when the convex and the pupil of the cover are engaged, it is not easily separated by a flat hand tool as described in the specification, and the structure of the case is practiced. The test shows that the tenon is only a slightly larger bump than the pupil, and the material itself is squeezed into the pupil by the elastic space of the material, thereby making the cover lifted by the flat hand tool, but Such a structure The wiring connection box often causes the connection between the connection box and the cover plate due to the impact and vibration of the external force, so that the connection box and the cover plate are separated, and the disadvantages are also required, and the additional hand tools are also required to be used for the case and the cover. Separation increases the inconvenience of construction.

In order to make the construction personnel more convenient in the configuration of the line, the inventors have been working on the improvement and innovation of the wiring connection box, such as the "Rolling Combined Wiring Connection Box" of the Republic of China New Patent No. M310519, in the case The inventors have disclosed a wiring junction box comprising a flange on a top surface of a hollow casing, and a plurality of notches and positioning notches, and a cover plate is fixed relative to the notches a fastening piece, which is inserted through the fixing buckles from the notches, and along a The guide bevel is rotated at an angle and introduced into the positioning notch, the fastening effect is achieved by the fixing clasp when rotating, and the positioning is achieved by the positioning notch, and the cover can be separated by reverse rotation. The hollow box body simplifies the process of the operator operating the wiring connection box by rotating the cover plate; however, when the cover plate is combined with the box body, the fixed buckle piece is extended by the elastic space of the material itself. Leading the slanting edge into the positioning slot, so that the fixing clasp is engaged with the positioning slot to avoid loosening due to the vibration of the external force, but in actual operation, it is more difficult to cover the cover Separation from the box often requires a lot of effort or the use of additional hand tools to get the fastening tab away from the positioning slot, so there are still some disadvantages in practical use.

In view of this, the inventors conducted further research and innovation, and completed the present invention through a plurality of tests and actual operations, and the present invention was specifically proposed.

The main object of the present invention is to provide a cap-type wiring connection box, which can easily make the cover plate only by rotating the cover plate relative to the box body without the need of the locking element and other auxiliary tools, and the time-consuming and laborious operation process. Combine or separate from the box to facilitate the addition and modification of the line.

Another object of the present invention is to provide a cap-type wiring connection box, which can easily achieve the positioning and fastening effect of the cover plate by the extrusion of the flange and the design of the rounded corner or the obtuse angle of the bump. When the cover and the case are separated, the operation can be more labor-saving.

Another object of the present invention is to provide a cap-type wiring connection box, which can achieve the best effect by using the most simplified design of each component, and does not need to go through a cumbersome manufacturing process, thereby reducing the cost.

In order to achieve the above effects, a cap-type wiring connection box of the present invention includes a a box body and a cover plate, the box system is hollow, a plurality of wiring holes are arranged on the side surface, the top surface radial ring is provided with a flange and a first opening is formed, the flange comprises a plurality of connected arc edges, each The arc edge is provided with a head end and a tail end, the head end is connected to the tail end of the other arc side, and a groove is formed, and the radius of the head end is larger than the radius of the tail end; the cover plate has an outer diameter larger than The first opening has a plurality of engaging pieces protruding downwardly from the positions of the arc edges, and at least one protrusion is disposed at a position opposite to the groove for engaging the cover plate with the box body .

According to the above structure, the first opening and the cover plate respectively have a substantially circular shape.

According to the above structure, the radius of the free end of each of the engaging pieces is smaller than the radius of the head end and larger than the radius of the trailing end.

According to the above structure, the bottom surface of the box body has a second opening, and a plurality of lugs are provided, and the lugs are respectively provided with at least one fixing hole.

According to the above structure, the engaging pieces are inclined at an angle to the cover.

According to the above structure, the bump may be rounded or obtuse.

According to the above structure, the side of the box body may have a polygonal structure, and at least one wiring hole is provided on each side.

According to the above structure, the side of the case body may have a circular structure.

Hereinafter, a preferred embodiment will be described, and the configuration of the present invention will be disclosed in detail as follows:

1 to 3 are perspective views of a preferred embodiment of the cap-type wiring junction box of the present invention. The main structure of the present invention includes a case 10 and a cover 20, wherein The box body 10 has a hollow structure, and a first opening 13 and a second opening 14 are respectively defined in the top surface and the bottom surface, and a plurality of wiring holes 11 for connecting the lines are disposed on the side surface; on the top surface of the box body 10, the radial direction A flange 12 is formed to form the first opening 13. The flange 12 includes a plurality of arc edges 120 connected to each other. As shown in FIG. 2, the arc edges 120 are respectively provided with a head end 121 and a tail end. The end 122 of the end 121 is larger than the radius of the end 122, and the head end 121 of each arc 120 is connected to the tail end 122 of the other arc 120. The head end 121 and the end 121 The recesses 122 are respectively formed with a groove 123. The outer diameter of the cover plate 20 is larger than the first opening 13. The first opening 13 can be completely covered when the cover 20 is coupled to the casing 10. And a plurality of engaging pieces 21 are respectively protruded downward from the positions of the arc edges 120, and the positions of the grooves 123 are opposite to the positions of the grooves 123 a bump 22, whereby the engaging piece 21 and the bump 22 are respectively engaged with the arc edge 120 and the groove 123 when the cover 20 is coupled to the casing 10, so that the The cover 20 is firmly coupled to the case 10.

With the above structure, the combination and separation of the cover 20 and the casing 10 do not need to be transmitted through the tool, and without cumbersome operation, only the cover 20 is rotated at an appropriate angle with respect to the casing 10. The circuit can be easily combined and trimmed to set and trim the line. Moreover, the screw-type wiring connection box of the invention not only utilizes the simplest structure, but also does not need to go through a complicated manufacturing process, and can effectively reduce the production cost.

The cap-type wiring connection box disclosed by the present invention can be formed by stamping a single metal plate, or can be formed by sheet metal in a sheet metal manner, or formed by other means. The bottom surface of the box body 20 is provided with a second opening 14 And a plurality of lugs 15 are arranged around the second opening 14 respectively, radially inward or outward Each of the lugs 15 is provided with at least one fixing hole 151 for fixing the box body 10, and the side of the box body 10 can have a circular structure or a polygonal structure, such as a hexagonal shape, an octagonal shape, Cylindrical or the like is not self-limiting in the present invention.

As shown in FIG. 2, the first opening 13 and the cover 20 are respectively formed in a circular shape, and the appropriate position of the cover 20 relative to the arc edges 120 can be bent downward by a simple process. The manner of forming the engaging pieces 21 protruding downwardly, and the radius of the free end 211 of each of the engaging pieces 21 is smaller than the radius of the head end 121 of the arc edges 120, and larger than the end of the arc edges 120 The radius of 122, in the preferred embodiment of the invention, the snap tabs 21 and the cover 20 are at an oblique angle (as shown in Figure 6).

Moreover, in the present invention, the bump 22 protruding downward from the cover plate 20 can form a rounded corner or an obtuse angle, and in the preferred embodiment of the present invention, it is a rounded structure (such as FIG. 3 and FIG. 6). As shown in the figure, the user is more labor-saving when separating the cover plate 20 from the casing 10, and the engaging portion 21 and the protrusion 22 are axially and radially engaged with the arc edge 120, respectively. With the groove 123, the cover plate 20 is not easily separated from the impact and vibration of the external force in the subsequent construction work.

Referring to FIG. 4 and FIG. 5 together, FIG. 4 is a schematic diagram of the action of the cover 20 combined with the casing 10. The radius of the free end 211 of the engaging piece 21 is between the head end 121 and the tail end. 122, when combining, the free ends 211 of the engaging pieces 21 are first inserted into the first opening from a position close to the head ends 121 (the radius of the arc side 120 is larger than the radius of the free end 211). 13 (as shown in FIG. 4), and then rotating an appropriate angle (as shown in FIG. 5), so that each of the engaging pieces 21 is respectively slid toward the corresponding end 122, during the sliding process, The radius of the arc edge 120 is gradually tightened, so that the engaging pieces 21 are gradually pressed and closely engaged with the arc edges 120, and at this time, the positions of the engaging pieces 21 and the radius of the free end 211 thereof. system The cover 20 is engageable with the casing 10; further, the bump 22 of the cover 20 is also engaged with the recess 123 (as shown in FIG. 5 and FIG. 6 is shown), whereby the cover plate 20 can be radially engaged with the casing 10 to prevent the cover plate 20 and the casing 10 from gradually loosening due to vibration or other factors; When the cover 20 is to be separated from the casing 10, it is only necessary to rotate the appropriate angle in the opposite direction.

However, the above description is only for the purpose of illustration and illustration of the preferred embodiments of the present invention, and is not intended to limit the present invention, and any one skilled in the art can easily change or modify it in the field of the present invention. The scope of the patents defined below is covered by the present invention.

10‧‧‧Box

11‧‧‧ wiring holes

12‧‧‧Front

120‧‧‧Arc edge

121‧‧‧ head end

122‧‧‧End

123‧‧‧ Groove

13‧‧‧First opening

14‧‧‧second opening

15‧‧‧ 耳耳

151‧‧‧Fixed holes

20‧‧‧ Cover

21‧‧‧Clocks

211‧‧‧Free end

22‧‧‧Bumps

1 is a perspective view of a preferred embodiment of the present invention; FIG. 2 is an exploded perspective view of the casing and the cover of the present invention; FIG. 3 is another perspective exploded view of the casing and the cover of the present invention; FIG. 5 is a schematic view showing a second operation of the cover plate combined with the casing; FIG. 6 is a schematic side view showing the engagement of the cover plate and the casing of the present invention.

10‧‧‧Box

11‧‧‧ wiring holes

12‧‧‧Front

120‧‧‧Arc edge

121‧‧‧ head end

122‧‧‧End

123‧‧‧ Groove

13‧‧‧First opening

15‧‧‧ 耳耳

151‧‧‧Fixed holes

20‧‧‧ Cover

21‧‧‧Clocks

211‧‧‧Free end

22‧‧‧Bumps

Claims (7)

A cap-type wiring connection box, comprising: a box body, which is hollow, has a plurality of wiring holes on a side surface thereof, and a radial edge of the top surface is provided with a flange and forms a first opening having a substantially circular shape, and the The flange includes a plurality of connected arc edges, each arc edge is provided with a head end and a tail end, the head end is connected to the tail end of the other arc side, and a groove is formed, and the radius of the head end is larger than the a radius of the tail end; a cover plate having an outer diameter larger than the first opening, and a plurality of engaging pieces are protruded downwardly from the positions of the arc edges, wherein a radius of the free end of each of the engaging pieces is smaller than the head end The radius is greater than the radius of the trailing end. Further, the cover plate is provided with at least one bump at a position opposite to the recess for engaging the cover plate with the casing. The cap-type wiring junction box of claim 1, wherein the cover plate has a circular shape. The cap-type wiring junction box of claim 1, wherein the engaging pieces are at an oblique angle to the cover plate. The cap-type wiring junction box of claim 1, wherein the bumps are rounded or obtuse. The cap-type wiring junction box of any one of claims 1 to 4, wherein the bottom surface of the box body is a second opening, and a plurality of lugs are provided, and the lugs are respectively provided with at least one fixing hole. . The cap-type wiring junction box of claim 5, wherein the side of the box body has a polygonal structure and at least one wiring hole is provided on each side. The cap-type wiring junction box of claim 5, wherein the side of the box body has a circular structure.