JP2012028406A - Terminal box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further reduce the thickness of a terminal box.SOLUTION: A body 2 constituting a terminal box 1 comprises: a support part 2f which supports a terminal 4 coupled to an external connection cable 5 in a mounted manner; and a pair of elastic engagement pieces 11 which are cantilevered on both sides of the support part such that they extend along the support part. Engagement claws 11a protruding above the support part are provided on extended ends of the elastic engagement pieces. The engagement claws engage with both side edges of the terminal which is in a mounted state on the support part to thereby fix the terminal. Even if a length in an extending direction of the cantilevered elastic engagement pieces, which relates to the degree of elastic deformation of the elastic engagement pieces, is increased, the length direction is not in the height direction of the terminal box. Therefore, thickness reduction of the terminal box can be promoted.

Description

  The present invention relates to a terminal box, and more particularly to a terminal box used in a solar power generation system.

  Conventionally, various types of terminal boxes are used for electrical connection between devices. For example, in a solar battery panel of a solar power generation system, there are ones in which a plurality of solar battery modules are arranged vertically and horizontally, and a terminal box to which an external output cable is connected is attached to each solar battery module (for example, Patent Document 1). reference).

JP 2006-148176 A

  In the solar cell module terminal box as described above, for example, a flat terminal to which an external output cable is connected is fixed in a case made of synthetic resin. In that case, since the number of solar cell modules is large, simple assembly is required for cost reduction and productivity improvement. Therefore, it is preferable that the terminals can be fixed easily. A pair of elastic engagement pieces with a single shape is provided integrally with the case, the terminals are pushed in so as to expand the pair of elastic engagement pieces, and the terminals are locked by the engaging claws, thereby fixing the terminals. . Furthermore, the positional accuracy of the terminals, the certainty of fixing, and the fixing strength are also important.

  On the other hand, when the terminal box is attached to the solar cell module, the terminal box is attached to the back surface of the solar cell module. However, in the conventional one represented by the above-mentioned Patent Document 1, for example, the elastic engagement piece is provided upright from the bottom surface of the case, and in order to bend it comfortably so that it does not break when the terminal is pushed in. There is a problem that a certain length is required, so that the height of the elastic engagement piece becomes high and it is difficult to make the terminal box thin.

  Some solar cell module terminal boxes have a bypass diode connected between the positive and negative terminals in order to reduce the influence of shadows. In that case, the size of the bypass diode also affects the thinning. It is possible to influence. In addition, the number of terminals provided in the terminal box is one terminal for the positive electrode and one for the negative electrode, which are independent junction boxes, two terminals for a pair of positive and negative, three terminals, four terminals or more. is there. For example, in the case of one terminal, a backflow prevention diode may be provided, and the electric element provided in such a terminal box is not limited to each diode as described above, and there is also a jumper wire, for example, which is received in the terminal box. It is desirable to reduce as much as possible the influence of the various electrical elements on the thinning of the terminal box.

  In order to solve such problems and further reduce the thickness of the terminal box, in the present invention, a terminal box that is attached to an electric device in a stacked state and receives a terminal connected to the electric device. The terminal box has a box-shaped main body formed of a synthetic resin material, a support portion integrally formed with the main body to support the terminal in the mounting state, and a mounting state on the support portion. An elastic engagement piece integrally formed with the main body to be engaged with the terminal, and the elastic engagement piece extends from the main body along the support portion and extends in the extending direction end. And a locking claw that is bent so as to protrude in the thickness direction of the terminal placed on the support portion, and engages the protruding portion so as to sandwich the terminal between the support portion and the support portion. It was assumed that it was formed as follows.

  According to this, the elastic engagement piece that engages so as to sandwich the terminal placed on the support portion of the terminal box with the support portion extends from the terminal box body along the support portion. Since the latching claw is provided at the extended end, the length of the elastic engagement piece in the extending direction is increased in order to increase the amount of displacement of the locking claw. Even if it is longer, the direction becomes the direction along the support portion, and since it is not the thickness direction of the terminal, that is, the height direction of the terminal box, the length of the elastic engagement piece does not affect the low height of the terminal box, A reduction in the height of the terminal box can be promoted.

  In particular, the main body preferably has an opening provided to receive an electric element connected to the terminal and to avoid interference with the electric element. According to this, in the case of, for example, a cylindrical diode as an electrical element received in the electrical element vacancy, even if the outer diameter is large, a part of the outer surface of the electrical element is accommodated in the opening of the electrical element vacancy. The terminal box can be made thinner by that amount. Note that the electric elements received in the terminal box are not limited to the diodes as described above, but include jumper wires and other various electric elements that constitute the circuit.

  Thus, according to the present invention, even if the length in the extending direction in the cantilever support state of the elastic engagement piece related to the magnitude of the elastic deformation of the elastic engagement piece for locking and fixing the terminal is increased. Since the length direction is not the height direction of the terminal box, it is possible to promote the thinning of the terminal box.

It is an assembly exploded perspective view of a terminal box to which the present invention was applied. (A) is a top view of the terminal, (b) is a side sectional view taken along the line IIb-IIb in (a), and (c) is a main part showing another example of the core wire coupling portion. FIG. It is a top view which shows the body of a terminal box. It is the principal part enlarged top view which assembled | attached the terminal to the body. (A) is the principal part expanded sectional view seen along the arrow VV line of FIG. 4, (b) is a top view which shows the state in the middle of assembling a terminal. It is a perspective view which shows the lower surface of a body. It is a principal part expanded sectional view which shows the fixing | fixed part of a cable.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view of a terminal box 1 for electrical connection with a solar cell module 12 in a photovoltaic power generation system to which the present invention is applied. As shown in the figure, the terminal box 1 is made of a synthetic resin material, and is a flat rectangular box-shaped body 2, a rectangular flat cover 3 for covering the upper surface of the body 2 in the drawing, 2, each of the cable clamps 6 for fixing the external connection cable 5 to which the positive and negative cable connection terminals 4 are fixed to the body 2.

  As shown in FIG. 2, the terminal 4 in the present embodiment has an elongated plate shape similar to the male tab terminal, and a pair of crimping pieces 4a formed at one end in the longitudinal direction of the terminal 4, And a soldering portion 4b composed of a flat portion at the other end in the longitudinal direction of the terminal 4. At the intermediate portion in the longitudinal direction of the terminal 4, there are long and short arm portions 4c and 4d extending on both sides of the terminal 4, and both sides of the terminal 4 between the arm portions 4c and 4d and the soldering portion 4b. And a pair of bent pieces 4e which are bent at substantially right angles on the back surface side in FIG. 2 (a). Further, a pair of parallel lines spaced apart from each other by a predetermined distance in the longitudinal direction from the side of the crimping piece 4a is formed on the plane portion (surface side in FIG. 2A) between the crimping piece 4a and the soldering portion 4b of the terminal 4. 4 f of protrusions, the long hole 4g extended predetermined length along a longitudinal direction, and the rib 4h extended in the direction orthogonal to a longitudinal direction in the position corresponding to a pair of bending piece 4e are each provided.

  The pair of crimping pieces 4a is in an expanded state until the core wire 5a of the cable 5 is joined, and the core wire 5a is placed between the pair of crimping pieces 4a and crimped by a crimping machine or the like. It is bent inward as shown. As for the bonding between the crimping piece 4a and the core wire 5a, a sufficient bonding force can be obtained only in this crimped bonding state, but it is better to be soldered to obtain a good electrical connection state. Moreover, as the connection of the core wire 5a, it is not always necessary to press-bond, and only soldering may be used. An example of the shape of the soldering piece 4i corresponding to the crimping piece 4a in that case is shown in FIG. As shown in the figure, the pair of soldering pieces 4i rises with a width capable of receiving the core wire 5a, and opens outward in opposite directions at the rising end so that the solder can be easily deposited. It is composed to. By making such a shape, only the shape difference between the crimping piece 4a and the soldering piece 4i with respect to the above-mentioned crimping type, the shape of the other part is the same, and there are many common parts in the mold, Not only is the manufacture simple, but the height of the terminal 4 can be reduced because the rising height is substantially the same as the height of the core wire 5a.

  Next, the internal structure of the body 2 will be described with reference to FIG. The body 2 is made of synthetic resin as described above, and each shape in the body 2 may be formed by integral molding unless otherwise specified in the following description. As shown in FIG. 1, the entire body 2 has a rectangular box shape with a low height, and the wall at one end in the longitudinal direction is opened downward so as to cover the outer peripheral surface of each of the positive and negative cables 5 by approximately a half circumference. The recessed portion 2a is formed, and the lower open surface of the recessed portion 2a is shielded by assembling the cable clamp 6 described above.

  The peripheral wall portion of the body 2 is formed in a double wall structure including an outer wall 2b that forms the outer peripheral surface of the body 2 and an inner wall 2c inside thereof. Between the concave portion 2a side portion of the inner wall 2c and the corresponding portion of the outer wall 2b, an outer shell forming the concave portion 2a is provided. Between the outer wall 2b and the inner wall 2c thus provided, a U-shaped continuous groove is formed by three sides other than one side on the side where the recessed portion 2a of the body 2 is provided.

  On the other hand, on the back surface (lower side in FIG. 2) of the cover 3, a protruding wall 3a that is continuous in a U-shape is provided so as to enter the groove between the outer wall 2b and the inner wall 2c. The size of the surface of the cover 3 is formed in a size corresponding to the outer shape of the outer wall 2b of the body 2. By aligning the edge of the cover 3 with the outer wall 2b of the body 2, the space between the outer wall 2b and the inner wall 2c is set. The protruding wall 3a enters the groove, thereby forming a labyrinth structure. Thereby, since the electrical creepage distance can be ensured as long as possible, in addition to the reduction in size and thickness of the terminal box 1 as a whole, it is possible to exert a great effect on the improvement of electrical safety.

  Inside the inner wall 2c of the body 2, a bottomed cylindrical portion 2d is disposed at the center portion, and between the inner surfaces facing each other of the inner wall 2c, it is integrated with the bottom of the bottomed cylindrical portion 2d. The joined bridge 2e is connected. In addition, on both sides of the bottomed cylindrical portion 2d, support portions 2f having flat upper surfaces that support the positive and negative terminals 4 in a mounted state are disposed. Each support portion 2f may be formed integrally with the bridging portion 2e. In the illustrated example, the bridging portion 2e is provided at a position one step lower than the support portion 2f.

  In order to fix the terminal 4 to the body 2, the terminal 4 is inserted through the recessed portion 2 a as shown by an arrow A in FIG. 1 and is taken out to the inside surrounded by the inner wall 2 c. In this state, the terminal 4 comes to be positioned on the support portion 2f. A protrusion 7 having substantially the same cross-sectional shape is protruded from the support portion 2 f so as to fit into the long hole 4 g of the terminal 4. By fitting the protrusion 7 and the long hole 4g, the terminal 4 is positioned with respect to the biaxial direction along the upper surface of the support portion 2f.

  Further, the both side surfaces of the bottomed cylindrical portion 2d that are parallel to each other and the corresponding position of the inner wall 2c are located between the arm portions 4c and 4d of the terminal 4 in the above-mentioned positioning state and the bent piece 4e on the support portion 2f. The protrusions 8 having a shape that can be inserted from both sides of the plate 4 with substantially no gap are provided. When the cable 5 is placed on the support portion 2f, the bent portion 4e of the terminal 4 engages with the protruding portion 8 in the direction in which the cable 5 is removed from the body 2, so that the cable 5 is prevented from coming off.

  Both arm portions 4c and 4d projecting on both sides of the terminal 4 are formed in different lengths, and each arm portion 4c is located at a position where the bottomed cylindrical portion 2d and the inner wall 2c face each other. -Each shoulder part 2i * 2j by which the protrusion length from each was prescribed | regulated corresponding to the difference in length of 4d was provided. Thereby, even if it tries to place the terminal 4 upside down on the support part 2f, the long arm part 4c hits the shoulder part 2j corresponding to the short arm part 4d, and the arm parts 4c and 4d are accommodated between the shoulder parts 2i and 2j. It is not possible to prevent misassembly.

  On the other hand, the support portion 2f is provided so as to extend with a length capable of supporting the portion excluding the soldering portion 4b of the terminal 4 immersed in the inner wall 2c from the recessed portion 2a. A pair of elastic engagement pieces 11 extending along the support portion 2f from the recessed portion 2a side of the body 2 which is the main body are provided on both side portions orthogonal to the extending direction of the support portion 2f. Yes. On the extended end of the elastic engagement piece 11, the terminal 4 of the support portion 2f is placed between the crimping piece 4a of the terminal 4 placed and positioned on the support portion 2f and the arm portions 4c and 4d. An engagement claw 11a bent in a direction protruding upward from the upper surface is provided. The both engaging claws 11a protrude in directions facing each other so that the terminals 4 can be sandwiched between the supporting portions 2f in the thickness direction, and are triangularly expanded toward the upper side of the supporting portions 2f. Each has a cross-sectional shape.

  As described above, when the terminal 4 is positioned by fitting the elongated hole 4g and the protrusion 7, the long hole 4a is aligned with the protrusion 7, as shown by an arrow B in FIG. The terminal 4 is lowered from above with respect to the support portion 2f. The distance between the engaging claws 11a of the pair of elastic engaging pieces 11 is shorter than the width of the terminal 4 in the same direction. When the terminal 4 is lowered with respect to the support portion 2f, both side edges of the terminal 4 are paired. It interferes with the engaging claw 11a of the elastic engaging piece 11. The pair of engaging claws 11a have slopes facing each other so as to expand upward, and the elastic engaging piece 11 extends along the longitudinal direction of the support portion 2f as described above. Since it is provided in the holding support state, as shown in FIG. 5B, both elastic engagement pieces 11 can be elastically deformed in a direction in which the engagement claws 11a are separated from each other as the terminal 4 is lowered. .

  Then, at a position where the terminal 4 comes into contact with the upper surface of the support portion 2f and is placed, both side edges of the terminal 4 dodge the projecting end of the engaging claw 11a and go into the lower side of the engaging claw 11a to be elastic. Due to the elastic restoring force of the engaging piece 11, the protruding portion of the engaging claw 11 a is positioned on the upper surface of both side edge portions of the terminal 4 (solid line in FIG. 5A). As a result, the terminal 4 is engaged with the engaging claw 11a in a direction in which the terminal 4 is disengaged upward in the mounting state on the support portion 2f and is prevented from being detached, and is supported by the fitting of the protrusion 7 and the long hole 4g. It is also positioned with respect to the biaxial direction along the upper surface (mounting surface) of the portion 2f, and is fixed to the body 2 in this way.

  As described above, when the elastic engagement piece 11 is deformed so as to release the engagement claw 11a in the assembling work of the terminal 4, a certain length is required to elastically deform the elastic engagement piece 11 without difficulty. To do. According to the present invention, the elastic engagement piece 11 extends in a cantilevered manner along the support portion 2 f that supports the terminal 4 in the mounted state, and the extending direction is the thickness (height) of the body 2. Since the thickness (height) of the body 2 is not affected even if the length in the extending direction (extending length) of the elastic engagement piece 11 is increased, the body 2, that is, the terminal box 1 Can be made thinner.

  As shown in FIGS. 1 and 4, in the terminal box 1 of the illustrated example, positive and negative terminals 4 are assembled, and a bypass diode 9 as an electric element is connected between the positive and negative terminals 4. The bypass diode 9 is for avoiding resistance loss when the solar cell module 12 stops generating power due to the influence of shadows. When the bypass diode 9 has a wire-like terminal 9a coaxially at both ends as in the illustrated example, the terminal 9a is placed between the pair of parallel protrusions 4f provided on the terminal 4 as described above. Thus, positioning in the assembly process of the bypass diode 9 is easily and reliably performed, and soldering workability is improved by improving the heat transfer performance by the protrusion 4f. Further, the protrusion 4f is disposed so as to be adjacent to the crimping piece 4a, so that solder can be poured into the crimping piece 4a in the soldering operation of the terminal 9a of the bypass diode 9, and the crimping piece 4a. The connecting portion of the core wire 5a can also be soldered.

  Note that the number of terminals provided in the terminal box 1 is not limited to two terminals for the positive electrode and the negative electrode in the illustrated example, but one terminal serving as an independent junction box, and three or four terminals. Or more. Further, although the bypass diode 9 is provided in the case of the two-terminal structure of the illustrated example, a backflow prevention diode may also be provided in the case of a single terminal, for example.

  The lower surface of the body 2 is entirely covered as shown in FIG. 6, but an opening 10a for passing the ribbon cable-like positive and negative connection lines 12a and 12b of the solar cell module 12 into the inner wall 2c; An opening 10b provided at a position corresponding to the body portion of the bypass diode 9 is provided. A recessed portion 2 a for fitting the cable clamp 6 is also opened on the lower surface of the body 2. The openings 10a and 10b and the recessed portion 2a communicate with the inner portion of the inner wall 2c.

  In the terminal box that is assembled to equipment installed outdoors as in this embodiment, it is necessary to ensure insulation by watertightness. In the illustrated example, the terminal 4 and the bypass diode 9 are received inside the inner wall 2c. For this reason, potting is performed in which the inside of the inner wall 2c is filled with a potting liquid (synthetic resin material).

  In the present embodiment, the bottomed cylindrical portion 2d is disposed in the central portion of the potting liquid filling space surrounded by the inner wall 2c. The bottomed cylindrical portion 2 d is provided in a dead space between both terminals 4. As a result, the potting range in the inner wall 2c is a portion excluding the bottomed cylindrical portion 2d, and potting liquid can be saved with respect to the case where the bottomed cylindrical portion 2d is not provided.

  In addition, the projection 3b is provided at the center of the back surface of the cover 3. In this embodiment, the projection 3b is provided at a position corresponding to the gate recess on the surface of the cover 3, and the cover 3 has a uniform thickness. This is for the plate thickness compensation provided to ensure the above. And the protrusion 3b is located in the space part inside the bottomed cylindrical part 2d in the state which assembled | attached the cover 3 to the body 2. As shown in FIG. Thereby, interference with the protrusion 3b and the bottomed cylindrical part 2d is avoided. In the absence of the bottomed cylindrical portion 2d, the entire inside of the inner wall 2c is potted, and high-precision management of the amount of potting liquid is necessary to avoid interference between the potting liquid filling surface and the projection 3b. Thus, there is a problem that the potting work becomes complicated. On the other hand, the simple structure in which only the bottomed cylindrical portion 2d is provided eliminates the need to consider interference with the protrusions 3b and can simplify the potting operation. The bottomed cylindrical portion 2d can be used not only for escape of the plate thickness compensation projection 3b, but also for escape of various projections such as gate residue and engraving characters when the gate is located on the back side of the cover 3, for example. .

  Further, as described above, the groove into which the protruding wall 3a of the cover 3 enters is provided between the outer wall 2b and the inner wall 2c, and the labyrinth by the outer wall 2b and the inner wall 2c and the protruding wall 3a when the cover 3 is assembled. Even if the potting liquid leaks to the outside of the inner wall 2c, it does not leak to the outside of the body 2.

  Next, the potting liquid leakage prevention structure by the recessed portion 2a and the cable clamp 6 will be described below with reference to FIGS. The cable clamp 6 described above is formed in a shape in which one side of a rectangular thick plate member is recessed in a semi-cylindrical shape corresponding to the half circumference of the cable 5. On the inner peripheral surface of the semi-cylindrical shape of the cable clamp 6, an arc-shaped protrusion 13a extending in the circumferential direction is provided in the middle portion in the axial direction (axial direction of the cable 5), and the inner side of the inner wall 2c. A pair of arc-shaped ridges 13b adjacent to each other in the same shape as described above are provided at the axial end portions. In addition, projecting wall portions 13c are provided at positions corresponding to the pair of arcuate ridges 13b on both the end surface in the immersing direction and both side surfaces that immerse in the recessed portion 2a on the outer surface of the cable clamp 6.

  The recessed portion 2a is recessed in a rectangular shape so as to receive the cable clamp 6 in a buried state, and further, the bottom surface of the rectangular recessed portion is semicylindrical so as to face the semicylindrical recessed portion of the cable clamp 6. It is formed in a shape recessed in a shape. On the inner peripheral surface of the semi-cylindrical shape of the recessed portion 2a, similarly to the above, an arc-shaped ridge 13d extending in the circumferential direction is provided in the middle portion in the axial direction (axial direction of the cable 5). A pair of arc-shaped ridges 13e adjacent to each other are provided at the axial end of the inner wall 2c. Further, in the rectangular portion that receives the cable clamp 6 in the recessed portion 2a, the protruding wall portion 13c is fitted to the stepped portions on both sides that receive the cable clamp 6 and the side surface that sandwiches the cable clamp 6 from the side. A groove 13f is provided to be received.

  In addition, the engaging claws 6a are formed on the outer side surfaces of the both side wall portions of the cable clamp 6, and the engaging concave portions 2g are formed on the corresponding inner wall surfaces of the recessed portion 2a. The cable clamp 6 is connected to the recessed portion 2a. The engaging claw 6a and the engaging recess 2g can be engaged with each other by being immersed in the. By assembling the cable clamp 6 so as to be pushed into the recessed portion 2a, the engaging claw 6a of the cable clamp 6 is engaged with the engaging recessed portion 2g of the recessed portion 2a, and the cable clamp 6 is fixed to the body 2.

  In this way, the cable 5 can be sandwiched by the semicylindrical portions of the recessed portion 2 a and the cable clamp 6, and each semicylindrical shape of the recessed portion 2 a and the cable clamp 6. The arc-shaped protrusions 13a, 13b, 13d, and 13e provided on the inner peripheral surface bite into the outer peripheral surface of the covering of the cable 5 over the entire periphery (see FIG. 7). As a result, when the potting liquid is transmitted along the outer circumferential surface of the cable 5 in the axial direction and leaks, the potting liquid can be blocked by the arc-shaped protrusions 13b and 13e on the inner wall 2c side, and the outer arc-shaped Since it has a double blocking structure that blocks even the protrusions 13a and 13d, it is possible to reliably prevent the potting liquid from leaking. Furthermore, the fitting portion between the protruding wall portion 13c of the cable clamp 6 and the groove 13f of the recessed portion 2a has a labyrinth structure, and leakage from the gap between the cable clamp 6 and the recessed portion 2a is also prevented.

  In the clamped state between the cable clamp 6 and the recessed portion 2a, the cable clamp 6 receives an urging force in the direction in which the cable clamp 6 is pushed out from the recessed portion 2a by the elastic restoring force of the covering of the cable 5. The joint claw 6a is directed to increase the engagement force in the engagement recess 2g. Therefore, the engaging force between the engaging claw 6a and the engaging recess 2g is further strengthened, and the fixed state of the cable clamp 6 is further strengthened.

  Further, the lower surface of the body 2 of the terminal box 1 is fixed by being bonded to the bonding surface (12c in FIG. 1) of the solar cell module 12 with an adhesive. In this case, since the cable clamp 6 is disposed on the side to be bonded to the solar cell module 12, the adhesive enters the recessed portion 2a through the gap between the cable clamp 6 and the recessed portion 2a. Thereby, since the gap between the recessed portion 2a and the cable clamp 6 is filled, leakage of the potting liquid to the outside can be prevented.

  Note that the protruding wall 3a of the cover 3 described above is arranged over three sides in a U-shape, and is not provided in a portion corresponding to the remaining one side, but in that portion, the protruding wall 3a is in relation to the outer wall 2b. The inner wall 2c is provided at a position that is far away, and the upper surface of the corresponding part of the inner wall 2c is formed wider than the other three sides so that the contact area with the back surface of the cover 3 is increased. Has been. Further, as described above, the outer shell that forms the recessed portion 2a is provided in the part of the outer wall 2b and the inner wall 2c that are separated from each other, but the other part is a space 2h that surrounds the outer shell, For example, even if the potting liquid leaks from the gap between the inner wall 2c and the cover 3, the leaked potting liquid can be received in the space 2h up to the outer wall 2b, so that it may leak out of the body 2. Is prevented.

  In the illustrated example on the outer surface side of the protruding end portion of the protruding wall 3a, locking projections 3c are provided at two locations on both side surfaces, and corresponding positions on the inner peripheral surface of the outer wall 2b of the body 2 are provided. Is provided with a locking claw portion 2k. The distance between the opposing surfaces of the inner peripheral surface of the outer wall 2b is the same as the length between the protruding ends of the locking claw portion 2k, and the locking is achieved by pushing the cover 3 toward the body 2 for assembly. The protrusion 3c gets over the locking claw 2k by elastic deformation of the protruding wall 3a, reaches the lower side of the locking claw 2k, and is locked with the locking protrusion 3c by the elastic restoring force of the protruding wall 3a. The claw portion 2k is engaged with the direction in which the cover 3 is pulled out.

  In this way, the cover 3 can be assembled and fixed to the body 2, and the cover 3 can be easily assembled. As described above, since the locking projection 3c gets over the locking claw portion 2h and engages to prevent it from coming off, the completion of the assembly can be recognized by a click feeling, and the assembly workability is good.

DESCRIPTION OF SYMBOLS 1 Terminal box 2 Body 2f Support part 3 Cover 4 Terminal 5 Cable 6 Cable clamp 9 Bypass diode 10b Opening 11 Elastic engagement piece 11a Engagement claw

Claims (2)

A terminal box for receiving and fixing a terminal combined with an external connection cable,
The terminal box includes a box-shaped main body formed of a synthetic resin material, a support unit integrally formed with the main body to support the terminal in a mounted state, and the terminal in a mounted state on the support unit. An elastic engagement piece integrally formed with the main body to be engaged,
The elastic engagement piece is bent so as to extend from the main body along the support portion and project in the thickness direction of the terminal placed on the support portion at the end in the extension direction, The terminal box is characterized by having a locking claw that engages the projecting portion so as to sandwich the terminal between the support portion.   The terminal box according to claim 1, wherein the main body has an opening provided to receive an electric element connected to the terminal and to avoid interference with the electric element.

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