JP5916960B1 - Terminal box - Google Patents

Abstract

The first flange portion 11 provided at the abutting portion of the terminal box seat 10 with the terminal box lid 20 and the terminal box lid 20 has a metal terminal box seat 10 and a metal terminal box lid 20. The second flange portion 21 provided at the abutting portion with the terminal box seat 10 is integrally fixed by fastening screws at a plurality of locations via the packing 30 made of an elastic and waterproof material. A connected terminal box, wherein the first flange portion 11, the second flange portion 21, and the packing 30 are sandwiched in the thickness direction of the packing 30, and the first flange portion 11, the packing 30, and the first The fixing | fixed part which closely_contact | adheres and fixes the 2 flange part 21 is provided in the area | region between the said adjacent fastening screws.

Description

  The present invention relates to a terminal box having a terminal box seat and a terminal box lid.

  A rotating electrical machine terminal box attached to a motor, which is a rotating electrical machine, generally has a structure divided into a terminal box seat and a terminal box lid. Then, the terminal box seat and the terminal box lid are integrally connected to each other for the rotating electrical machine by fastening the flange portion provided on the periphery of the terminal box seat and the flange portion of the terminal box lid using a fastening screw. A terminal box is constructed.

  A terminal box made of a thin steel plate is used for an indoor rotary electric terminal box, that is, a rotary electric terminal box attached to an indoor rotary electric machine. On the other hand, the terminal box for rotary electric machines for outdoor use, that is, the terminal box for rotary electric machines attached to a rotary electric machine arranged outdoors, is exposed to rain, so the terminal box seat and the terminal box lid are sealed and waterproof. The waterproof structure which has is required. Therefore, as a waterproof structure for a terminal box for a rotating electrical machine, Patent Document 1 discloses a structure in which the periphery of a cover is L-shaped in a structure in which a fastening bolt is tightened via a rubber packing between a terminal box body and a cover. There is described a terminal box of a rotating electrical machine having a shape and having a seal structure in which a rubber packing is sandwiched between a side surface side of a joining surface of a terminal box body and an L-shaped portion around the cover.

  Here, since the terminal box for rotating electrical machines is composed of a thin steel plate, due to the difference in deformation between the rubber packing and the thin steel plate, when the terminal box seat and the terminal box lid are fastened with a fastening screw, A gap is generated in a part of the joint surface between the flange portion of the terminal box and the flange portion of the terminal box lid. That is, when the rubber packing is compressed by the fastening screw, the rubber packing near the fastening screw is compressed by the fastening force of the fastening screw. However, a portion of the rubber packing away from the fastening screw is thickened without being compressed, and the flange portion of the terminal box seat and the flange portion of the terminal box lid are deformed starting from the portion where the rubber packing is compressed. Thereby, a clearance gap arises in a part between the flange part of a terminal box, and the flange part of a terminal box cover.

  However, when the thickness of the steel plate is increased, it is difficult to press the terminal box seat and the terminal box lid. For this reason, in the outdoor waterproof rotating electrical terminal box, in order to eliminate the above-mentioned gap, a casting is used for the material of the terminal box seat and the terminal box lid, and the flange portion of the terminal box seat and the flange portion of the terminal box lid are used. Therefore, it is necessary to increase the rigidity of each flange portion to prevent the flange portion from being deformed.

JP-A-5-83899

  However, the casting terminal box for a rotating electrical machine has a problem that the price is high and the manufacturing period is long as compared with a terminal box for a rotating electrical machine made of steel.

  This invention is made | formed in view of the above, Comprising: It aims at obtaining an inexpensive terminal box which has waterproof performance, and whose manufacturing time is short.

In order to solve the above-described problems and achieve the object, the present invention has a metal terminal box seat and a metal terminal box lid, and a butt portion of the terminal box seat with the terminal box lid. The first flange portion provided and the second flange portion provided at the abutting portion between the terminal box seat of the terminal box lid and the fastening screws at a plurality of locations via packing made of an elastic and waterproof material. The terminal box is integrally connected by being fixed by the first flange portion, the second flange portion, and the packing in the thickness direction of the packing and sandwiched between the first flange portion and the packing. and a fixing portion for fixing in close contact with said second flange portion, e Bei the region between the fastening screws adjacent, the fixing unit is composed of two divided body, said second and said first flange portion The flange and the part Further comprising a fixing bracket sandwiching the Kin in the thickness direction of the packing, a fastening screw for fastening the two divided bodies in the thickness direction of the packing, and characterized.

  The terminal box according to the present invention has an effect that a terminal box having waterproof performance and a short manufacturing time can be obtained.

The side view which shows the state by which the terminal box for rotary electric machines concerning embodiment of this invention was attached to the electric motor The top view of the terminal box for rotary electric machines concerning embodiment of this invention It is the side view of the terminal box for rotary electric machines concerning embodiment of this invention, and the figure seen from the direction of arrow A in FIG. It is sectional drawing which shows the structure of the terminal box for rotary electric machines concerning embodiment of this invention, and sectional drawing in line segment BB of FIG. It is principal part sectional drawing which shows the structure of the fixing | fixed part of the terminal box for rotary electric machines concerning embodiment of this invention, and principal part sectional drawing in line segment CC of FIG. Sectional drawing which shows the principal part which shows typically the joining state of the terminal box seat and terminal box cover in the terminal box for rotary electric machines concerning embodiment of this invention. Sectional drawing which shows the principal part which shows typically the joining state of the terminal box seat and terminal box cover in the terminal box for rotary electric machines of the comparative example which is not provided with the fixing | fixed part concerning embodiment of this invention.

  Below, the terminal box concerning an embodiment of the invention is explained in detail based on a drawing. Note that the present invention is not limited to the embodiments. In the drawings shown below, the scale of each member may be different from the actual scale for easy understanding. The same applies between the drawings.

Embodiment FIG. 1 is a side view showing a state in which a rotating electrical machine terminal box 1 which is a terminal box according to an embodiment of the present invention is attached to an electric motor 2 which is a rotating electrical machine main body. FIG. 2 is a top view of the rotating electrical terminal box 1 according to the embodiment of the present invention. FIG. 3 is a side view of the terminal box 1 for a rotating electrical machine according to the embodiment of the present invention, as viewed from the direction of arrow A in FIG. FIG. 4 is a cross-sectional view showing the structure of the rotating electrical terminal box 1 according to the embodiment of the present invention, and is a cross-sectional view taken along line BB in FIG. FIG. 5 is a main part sectional view showing the structure of the fixing part of the terminal box 1 for a rotating electrical machine according to the embodiment of the present invention, and is a main part sectional view taken along line CC in FIG.

  The electric motor 2 is used outdoors. Therefore, the rotating electrical machine terminal box 1 according to the present embodiment attached to the electric motor 2 is an outdoor rotating electrical machine terminal box. The rotating electrical machine terminal box 1 is attached to a holding portion 2 a provided on an upper portion of the electric motor 2. The terminal box 1 for a rotating electrical machine is formed in a rectangular parallelepiped shape whose shape viewed from above is rectangular.

  As shown in FIG. 1, the rotating electrical machine terminal box 1 includes a pair of terminal box seats 10 and a terminal box lid 20 that are divided by a plane along a diagonal line on one side surface and the divided plane is opened. The terminal box seat 10 and the terminal box lid 20 are integrally formed by press-molding a metal plate, respectively, in the same manner as a terminal box seat and a terminal box lid that are generally used for a terminal box for an indoor rotating electrical machine. An example of the metal plate is a steel plate, but a metal material other than the steel plate may be used. The thickness of the steel plate is not particularly limited, but is set to a thickness that allows press forming.

  The terminal box seat 10 has a first flange portion 11 formed around the butted portion with the terminal box lid 20. Further, the terminal box cover 20 has a second flange portion 21 formed around the abutting portion with the terminal box seat 10. When the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 constitute the rotating electrical terminal box 1 by joining the terminal box seat 10 and the terminal box lid 20 to each other. Are formed at positions facing each other. Therefore, the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 are both formed in a rectangular shape.

  The terminal box 1 for a rotating electrical machine includes a first flange portion 11 of a terminal box seat 10 and a second flange portion 21 of a terminal box lid 20 which are arranged to face each other via a packing 30 made of an elastic and waterproof material. A plurality of locations are integrally connected by fixing with fastening screws 40. That is, the 1st flange part 11 and the 2nd flange part 21 are fixed on both sides of the packing 30 by being fastened with the fastening screw 40. In the present embodiment, the bolts as the fastening screws 40 are provided at the four corner positions in the rectangular shape of the first flange portion 11 and the second flange portion 21 that face each other with the packing 30 therebetween.

  As an example of the packing 30 made of a material having elasticity and waterproofness, a rubber packing made of a rubber material can be cited. However, the material of the packing 30 is not limited to a rubber material, and other materials can be used as long as they have elasticity and waterproofness and can seal the gap between the first flange portion 11 and the second flange portion 21 in the terminal box 1 for a rotating electrical machine. It is also possible to use. The packing 30 has a ring shape in which an upper surface and a lower surface, which are joint surfaces of the first flange portion 11 and the second flange portion 21, are flat.

The rotating electrical terminal box 1 includes a fixing portion between two adjacent fastening screws 40. The fixing portion sandwiches the first flange portion 11 and the second flange portion 21 that are opposed to each other with the packing 30 in the thickness direction of the packing 30, and the first flange portion 11 and the packing 30, and the second flange portion 21 and the packing. 30 and fixed in a state of being in close contact with each other.

  The fixing portion is configured by fastening a fixing metal fitting 50 composed of two divided bodies with a fastening screw 60. The fixing bracket 50 includes a first fixing bracket 51 and a second fixing bracket 52 which are two divided bodies. The first fixing bracket 51 is a fixing bracket that sandwiches the first flange portion 11 of the terminal box seat 10 from the lower surface 13 side of the first flange portion facing the joint surface 12 with the packing in the first flange portion 11. The second fixing bracket 52 is a fixing bracket that sandwiches the second flange portion 21 of the terminal box lid 20 from the upper surface 23 side of the second flange portion facing the bonding surface 22 with the packing in the second flange portion 21.

  The first fixing bracket 51 and the second fixing bracket 52 have the same shape. The first fixing bracket 51 has a shape in which a single groove-shaped recess 51a is formed in the central region of the first main surface having a large area in a rectangular parallelepiped metal member. The second fixing bracket 52 has a shape in which a single groove-shaped recess 52a is formed in the central region of the first main surface having a large area in a rectangular parallelepiped metal member. That is, the first fixing bracket 51 and the second fixing bracket 52 have a U-shaped cross-sectional shape as shown in FIG. The first fixing bracket 51 and the second fixing bracket 52 do not have to have the same shape.

  In the first fixing bracket 51, one end face 51b which is an end face on one end side of the U shape facing each other across the groove-like recess 51a is a flat face and is disposed in contact with the lower face 13 of the first flange portion. In the second fixing bracket 52, one end surface 52b which is an end surface on one end side of the U shape facing each other across the groove-like recess 52a is a flat surface, and is disposed in contact with the upper surface 23 of the second flange portion. The lower surface 13 of the first flange portion and the upper surface 23 of the second flange portion are also flat surfaces. Therefore, the one end surface 51b can contact the lower surface 13 of the first flange portion stably. The one end surface 52b can stably contact the upper surface 23 of the second flange portion.

  Similarly, in the first fixing bracket 51, the other end surface 51c, which is an end surface on the other end side of the U shape facing each other with the groove-shaped recess 51a interposed therebetween, is a flat surface. Further, in the second fixing metal 52, the other end surface 52c which is an end surface on the other end side of the U shape facing each other across the groove-shaped recess 52a is a flat surface. The first fixing bracket 51 and the second fixing bracket 52 are in a state in which the other end surface 51c of the first fixing bracket 51 and the other end surface 52c of the second fixing bracket 52 are brought into contact with each other and the respective concave portions are opposed to each other. It is arranged with.

  As shown in FIG. 5, the first fixing bracket 51 and the second fixing bracket 52 connect the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 via the packing 30. It is fixed by the fastening screw 60 in a state of being sandwiched in the thickness direction of the packing 30. The fastening screw 60 penetrates the bottom of the recess 52a from the second main surface 52d facing the first main surface in the second fixing bracket 52, and the recess 52a of the second fixing bracket 51 and the recess 51a of the first fixing bracket 51. To the inside of the bottom of the recess 51a in the first fixing bracket 51. By tightening the fastening screw 60, the first flange portion is prevented from bending between the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 between the adjacent fastening screws 40. 11 and the second flange portion 21 can be held in parallel. Here, a bolt is used as the fastening screw 60.

  The height of the one end face 51b and the other end face 51c in the first fixing bracket 51 and the height of the one end face 52b and the other end face 52c in the second fixing bracket 52 are determined when the fastening screw 60 is tightened to a predetermined depth position. The height is adjusted so that the first flange portion 11 and the second flange portion 21 can be held in parallel.

  Further, the fixing portion is fixed to the terminal box seat 10 and the terminal box lid 20 by welding. That is, the first fixing bracket 51 is welded and fixed by the lower surface 13 of the first flange portion of the terminal box seat 10 and the welding portion 53. The second fixing metal 52 is welded and fixed by the upper surface 23 of the second flange portion of the terminal box lid 20 and the welding portion 54. Thereby, the fixing metal fitting 50 is reliably joined to the terminal box seat 10 and the terminal box lid 20, and is prevented from coming off due to external factors such as vibration. Further, in order to fix the fixing bracket 50 to the flange portion of the terminal box seat 10 and the terminal box lid 20, it is not necessary to use a member other than the fastening screw 60, and the number of parts of the fixing portion is reduced and the constituent members are assembled. Can be prevented from being lost. In addition, the welding location of the 1st fixing bracket 51 and the 2nd fixing bracket 52 is not limited to the part shown by FIG.

The first fixing bracket 51 and the second fixing bracket 52 are provided on the second flange 11 of the terminal box seat 10 and the second of the terminal box lid 20 before the rotating electrical terminal box 1 is attached to the holding portion 2a of the electric motor 2. It welds to the flange part 21, respectively. That is, in assembling the rotating electrical machine terminal box 1, first, the first fixing bracket 51 is welded to a predetermined position of the first flange portion 11 of the terminal box seat 10. Further, the second fixing fitting 52 is welded to a predetermined position of the second flange portion 21 of the terminal box lid 20. Next, the terminal box seat 10 to which the first fixing bracket 51 is welded is attached to the holding portion 2 a of the electric motor 2. Next, after a predetermined part is accommodated in the terminal box seat 10 and electrical wiring from the electric motor 2 is connected, the first flange portion 11 of the terminal box seat 10 and the second flange of the terminal box lid 20 are connected. The terminal box lid 20 is arranged with the packing 30 sandwiched between the part 21. And the 1st flange part 11 of the terminal box seat 10 and the 2nd flange part 21 of the terminal box cover 20 are fastened with the fastening screw 40, and the terminal box seat 10 and the terminal box cover 20 are fixed. Thereafter, the fastening screw 60 of the fixing portion is tightened. Thereby, the terminal box 1 for rotary electric machines concerning this Embodiment can be formed.

  FIG. 6 is a cross-sectional view of a main part schematically showing a joined state between the terminal box seat 10 and the terminal box lid 20 in the terminal box 1 for a rotating electrical machine according to the present embodiment. In FIG. 6, the state which the 1st flange part 11 of the terminal box seat 10 and the 2nd flange part 21 of the terminal box cover 20 were fastened via the packing 30 is shown typically, and it adjoins via a fixing | fixed part. The state of the flange part between the center axis | shafts of the matching fastening screw 40 is shown. In addition, in order to show the position of a fixing | fixed part, the fixing | fixed part is described collectively. Further, in the present embodiment, the flange portion between the adjacent fastening screws 40 across the fixing portion is gently curved in the extending direction of the flange portion, but in FIG. 6, the flange portion is provided in a straight line shape. It is assumed that it is.

  As shown in FIG. 6, in the rotating electrical machine terminal box 1, the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 are fastened by the fastening screw 40 via the packing 30. Further, in the region between the adjacent fastening screws 40, the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 are tightened by the fixing portion via the packing 30. Thereby, the curvature of the steel plate of the 1st flange part 11 and the 2nd flange part 21 of the area | region between the adjacent fastening screws 40 is prevented, and the 1st flange part 11 and the 2nd flange part 21 are made parallel. In this state, the first flange portion 11 and the second flange portion 21 can be tightly joined via the packing 30.

  The packing 30 is compressed by the first flange portion 11 and the second flange portion 21 in all regions in the extending direction of the packing 30, that is, the entire circumference, so that the thickness becomes equal. Thereby, a gap is not generated between the first flange portion 11 and the packing 30 and between the second flange portion 21 and the packing 30. That is, the entire surface of the packing 30 that faces the first flange portion 11 is in close contact with the first flange portion 11. In addition, the entire surface of the packing 30 facing the second flange portion 21 of the packing 30 is in close contact with the second flange portion 21 in all regions in the extending direction of the packing 30.

Thereby, in the terminal box 1 for rotary electric machines concerning this Embodiment, also in the area | region between the adjacent fastening screws 40, between the 1st flange part 11 and the packing 30 of the terminal box seat 10, and a terminal box cover 20 is sealed without generating a gap between both the second flange portion 21 and the packing 30, and the terminal box 1 for rotating electrical machines is waterproofed using the terminal box seat 10 and the terminal box lid 20 made of steel plate. A structure can be realized.

In order to seal without generating a gap between both the first flange portion 11 of the terminal box seat 10 and the packing 30 and between the second flange portion 21 of the terminal box lid 20 and the packing 30 , It is conceivable that the region between the adjacent fastening screws 40 is also fastened with the fastening screws 40. However, in this case, it is necessary to increase the number of slots for fastening with the fastening screws 40 in the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20, and the processing man-hour and processing cost are reduced. To increase.

  Since the terminal box 1 for a rotating electrical machine according to this embodiment includes a fixing portion that fastens the fixing metal fitting 50 with the fastening screw 60, the minimum necessary fastening screw 40 for fixing the terminal box seat 10 and the terminal box lid 20 is provided. Thus, the terminal box seat 10 and the terminal box lid 20 may be fastened, and there is no need to increase the number of fastening points by the fastening screw 40. Therefore, it is not necessary to increase the number of fastening slots by the fastening screws 40 in the first flange portion 11 and the second flange portion 21 of the terminal box lid 20, and a small processing man-hour and processing cost can be realized.

  In addition, since the indoor rotary electric terminal box does not require a waterproof mechanism and does not require packing, the terminal box base 10 can be connected to the terminal box base 10 with the minimum necessary fastening screws 40 for fixing the terminal box base 10 and the terminal box cover 20. The terminal box lid 20 may be fastened. Since the rotating electrical machine terminal box 1 according to the present embodiment includes a fixing portion, it is not necessary to increase the number of fastening points by the fastening screws 40, and an indoor rotating electrical machine terminal box made of a steel plate can be used as it is. It can be shared with a terminal box for indoor rotating electric machines.

  Moreover, since the rotary electric terminal box 1 according to the present embodiment does not require the terminal box seat 10 and the terminal box cover 20 to be made of cast metal, the rotary electric terminal box having waterproof performance is short and inexpensive. It can be realized in the manufacturing period. In addition, although the terminal box attached to a rotary electric machine is demonstrated here, the fixing | fixed part mentioned above is attached to the terminal box attached to the other electric equipment used outdoors similarly to the terminal box 1 for rotary electric machines. It is also possible to apply.

  FIG. 7 is a cross-sectional view of an essential part schematically showing a joined state between a terminal box seat and a terminal box lid in a terminal box for a rotating electrical machine of a comparative example that does not include a fixing portion according to the present embodiment. The terminal box for a rotating electrical machine of the comparative example has the same structure as the terminal box 1 for a rotating electrical machine according to the present embodiment, except that a fixing portion is not provided. That is, in the terminal box for a rotating electrical machine of the comparative example, the terminal box seat and the terminal box lid are fastened only by the fastening screws provided at the four corner positions of the rectangular flange portions opposed via the packing. FIG. 7 also shows that the flange portion between the central axes of adjacent fastening screws is provided in a straight line. Moreover, in FIG. 7, the same code | symbol as FIG. 6 is attached | subjected about the same member as the terminal box 1 for rotary electric machines concerning this Embodiment.

  In the terminal box for a rotating electrical machine of the comparative example, the fastening screw 40 is formed by fastening the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 via the packing 30 with the fastening screw 40. , The packing 30 is compressed both between the first flange portion 11 and the packing 30 and between the second flange portion 21 and the packing 30, and between the first flange portion 11 and the packing 30. In addition, no gap is generated between the second flange portion 21 and the packing 30. However, in the central portion between the adjacent fastening screws 40, a gap 100 is generated both between the first flange portion 11 and the packing 30 and between the second flange portion 21 and the packing 30.

That is, the portion near the fastening screw 40 in the packing 30 is compressed and thinned between the first flange portion 11 and the second flange portion 21 by the fastening force of the fastening screw 40. However, the portion of the packing 30 away from the fastening screw 40, that is, the packing 30 near the center between adjacent fastening screws 40 is not thinned because it is not compressed by the fastening force of the fastening screw 40. And the 1st flange part 11 of the terminal box seat 10 and the 2nd flange part 21 of the terminal box cover 20 which are formed by press-working a steel sheet are thin, and mechanical strength is small. For this reason, the 1st flange part 11 and the 2nd flange part 21 which consist of a thin steel plate curve to convex shape from the location where the packing 30 is compressed and is thinned. Thus, the between the first flange portion 11 and the packing 30 of the terminal box seat 10, both in between the second flange portion 21 and the packing 30 of the terminal box cover 20, a gap is generated in the part.

  In the above description, the case where the fixing portion is provided in the central portion between the adjacent fastening screws 40 has been described, but the adjacent portions are adjacent to each other depending on various conditions such as the distance between the adjacent fastening screws 40 and the elastic force of the packing 30. Fixing portions may be provided at a plurality of positions between the fastening screws 40.

  In the above description, the terminal box seat 10 and the terminal box lid 20 that are divided along the diagonal line on one side of the terminal box 1 for the rotating electrical machine have been described. It is not limited to. As another example of the terminal box seat 10 and the terminal box lid 20, the terminal box 1 for a rotating electrical machine may be divided in the horizontal direction to form a terminal box seat and a terminal box lid.

  As described above, in the terminal box 1 for a rotating electrical machine according to the present embodiment, the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 are tightened screws through the packing 30. 40 is tightened. Further, in the region between the adjacent fastening screws 40, the first flange portion 11 of the terminal box seat 10 and the second flange portion 21 of the terminal box lid 20 are tightened by the fixing portion via the packing 30. With such a configuration, in the rotating electrical terminal box 1 according to the present embodiment, the packing 30 of the steel plate of the first flange portion 11 and the second flange portion 21 in the region between the adjacent fastening screws 40 is provided. The first flange portion 11 and the second flange portion 21 are held in a parallel state by preventing the bending due to the repulsive force, and the first flange portion 11 and the second flange portion 21 are brought into close contact via the packing 30. Can be joined.

Thereby, in the terminal box 1 for rotary electric machines concerning this Embodiment, also in the area | region between adjacent fastening bolts, between the 1st flange part 11 and the packing 30 of the terminal box seat 10, and the terminal box cover 20 The second flange portion 21 and the packing 30 can be sealed without generating a gap. That is, the waterproof structure of the terminal box 1 for a rotating electrical machine can be realized by using the terminal box seat 10 and the terminal box lid 20 made of steel plate. Therefore, according to the terminal box 1 for a rotating electrical machine according to the present embodiment, the use of the terminal box seat 10 and the terminal box lid 20 made of a steel plate, which are inexpensive and short in processing time, has waterproof performance and is manufactured. A short and inexpensive terminal box for a rotating electrical machine can be realized.

  The configuration described in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and can be combined with other configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

  DESCRIPTION OF SYMBOLS 1 Terminal box for rotary electric machines, 2 Electric motor, 2a Holding | maintenance part, 10 Terminal box seat, 11 1st flange part, 12 Joining surface with packing, 13 Lower surface of 1st flange part, 20 Terminal box cover, 21 2nd flange part , 22 Bonding surface with packing, 23 Upper surface of second flange portion, 30 packing, 40 fastening screw, 50 fixing bracket, 51 first fixing bracket, 51a recess, 51b one end surface, 51c other end surface, 52 second fixing bracket, 52a Concave portion, 52b One end surface, 52c The other end surface, 52d Second main surface, 53 welded portion, 54 welded portion, 60 fastening screw, 100 gap.

Claims (4)

A metal terminal box seat and a metal terminal box lid; a first flange portion provided at a butt portion of the terminal box seat with the terminal box lid; and the terminal box seat of the terminal box lid; The second flange portion provided in the butting portion is a terminal box integrally connected by being fixed with a fastening screw at a plurality of locations via a packing made of an elastic and waterproof material,
Next, a fixing portion that sandwiches the first flange portion, the second flange portion, and the packing in the thickness direction of the packing and fixes the first flange portion, the packing, and the second flange portion in close contact is provided. In the region between the fastening screws that fit,
The fixing part is
A fixing bracket comprising two divided bodies and sandwiching the first flange portion, the second flange portion and the packing in the thickness direction of the packing;
A fastening screw for fastening the two divided bodies in the thickness direction of the packing;
Providing
Terminal box characterized by The terminal box seat is constituted by an integrally formed first metal plate ,
The terminal box lid is constituted by a second metal plate formed integrally;
The terminal box according to claim 1. The fixing portion is disposed at a central portion between the adjacent fastening screws;
The terminal box according to claim 2. A first fixing portion for fixing one of the two divided bodies and the first flange portion;
A second fixing portion for fixing the other of the two divided bodies and the second flange portion;
Terminal box according to any one of claims 1 to 3, characterized in that it comprises a.

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