JP2008177078A - Connector structure of solar cell module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector structure for electrically connecting a solar cell module to the outside. <P>SOLUTION: The solar cell module is equipped with a first connector (1) and a second connector (2) fixed to terminal boxes (118, 218a, 218b) formed on the rear face side of the solar cell module, respectively. The first connector (1) is equipped with a connection socket (11), and a first insulating cylindrical body (13) supporting the outer peripheral face of the connection socket and fixed to the terminal box. The second connector (2) is equipped with a connection pin (21), and a second insulating cylindrical body (23) surrounding a head part (21a) of the connection pin with a spacing and fixed to the terminal box as well as supporting the base end part (21b) of the connection pin. In the case of being connected to each other, simultaneously when the connection pin (21) is inserted and fitted into the connection socket, the connector structure allows the first insulating cylindrical body to be inserted and fitted into the second insulating cylindrical body (23). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a connector structure for electrically connecting solar cell modules.

  In general, the input voltage of the inverter connected to the commercial power system by converting the direct current output of the solar cell into alternating current is about DC 200V. Conventionally, two cords of a positive electrode and a negative electrode are drawn out from a terminal box attached to the back surface of each of a plurality of solar cell modules arranged in the longitudinal and lateral directions on the plane of the roof in the longitudinal and lateral directions, and from the terminal box of the adjacent module. Power is transmitted by connecting to the drawn cord (Patent Document 1, etc.). In this way, by connecting the cords drawn from the solar cell module, they are connected in series to obtain an output voltage of about 200V.

In addition, the solar cell module is installed by attaching the module to a mounting bracket or rail previously installed on the roof.
JP 2002-9326 A

The following problems can be pointed out in the above conventional technique.
Since the cords are used for electrical connection between the solar cell modules, it takes time to connect the cords at the time of installation, and many cords are exposed, which is bad.

  The objective of this invention is providing the connector structure of a solar cell module which can perform the electrical connection of solar cell modules easily and rapidly, and is compact also in appearance.

In order to achieve the above object, the present invention provides the following configuration.
(1) A solar battery module connector structure according to claim 1 is for electrically connecting a solar battery module (110, 210) having a solar battery cell (115, 215) fixed in a plane rectangular frame to the outside. In the connector structure,
A pair of connectors (1, 2) provided in opposite directions parallel to the connection direction of the solar cell module, and fixed to terminal boxes (118, 218a, 218b) formed on the back side of the solar cell module, respectively. One of the first connectors (1) can be connected to the second connector (2) of the adjacent solar cell module, and the other second connector (2) can be connected to the first connector of another adjacent solar cell module ( 1) including the pair of connectors connectable with
The first connector (1) supports a connection socket (11) protruding from one side surface (218a1) of the terminal box in parallel with a connection direction, and supports an outer peripheral surface of the connection socket and is fixed to the terminal box. The second connector (2) includes a connection pin (21) projecting from the other side surface (218b1) of the terminal box in parallel with a connection direction, and a connection pin (21) of the connection pin. A second insulating cylinder (23) which surrounds the head (21a) with a gap and supports the outer peripheral surface of the base end (21b) of the connection pin and is fixed to the terminal box; And
When connecting the first connector in one of the two adjacent solar cell modules and the second connector in the other, the connection pin (21) is inserted and fitted into the connection socket (11) at the same time. The first insulating cylinder (13) is inserted and fitted into the second insulating cylinder (23).

(2) The connector structure of the solar cell module according to claim 2 is the connector structure according to claim 1, wherein a gap is provided on both sides of either the first connector (1) or the second connector (2). A pair of first locking members ((16, 17), (18, 19)) arranged and extending in parallel with the connection direction, and arranged on both sides of the other connector via a gap and parallel to the connection direction A pair of second locking members ((26, 27), (28, 29)) extending to
Each of the pair of first lock members includes a proximal end portion fixed to the terminal box, a first lock arm portion extending in a connecting direction from a distal end of the proximal end portion, and a first lock arm portion A first fitting portion of a convex portion or a concave portion formed on a surface facing the connector, and a first locking portion formed on the first fitting portion,
Each of the pair of second lock members includes a base end portion fixed to the terminal box, a second lock arm portion extending in a connecting direction from a distal end of the base end portion, and a second lock arm portion A concave or convex second fitting part formed on the surface opposite to the connector at the tip, and a second locking part formed on the second fitting part,
When connecting the first connector in one of two adjacent solar cell modules and the second connector in the other, the first lock in the other facing the second fitting portion of the second lock member in one The first locking member and the second locking member are detached by being inserted and fitted into the first fitting portion of the member and the first locking portion and the second locking portion are engaged with each other. It is characterized by being impossible to combine.

(3) The connector structure of the solar cell module according to claim 3 is the connector structure according to claim 2, wherein each of the pair of second lock members ((26, 27), (28, 29)) is the second lock arm. A pressing projection protruding outward from the portion, and by pressing both of the pair of pressing projections toward the connector, the pair of second lock arm portions are elastically deformed and the second fitting is performed. The joining portion can be detached from the first fitting portion.

(4) The connector structure of the solar cell module according to claim 4 is the structure according to any one of claims 1 to 3, wherein the first insulating cylinder (13) and the second insulating cylinder (23) are elastic materials. It is formed by.

(A) In the present invention, since the electrical connection between the adjacent solar cell modules is performed by fitting the first connector and the second connector fixed to the terminal box, it is easy to construct without a cord. .

(B) Furthermore, since the first connector and the second connector are respectively fixed to the terminal box, it is necessary to provide a certain amount of play in the accuracy of these insertion fittings. As a result, the degree of mechanical coupling tends to be slightly relaxed. In order to cope with this, in the present invention, a pair of first lock members are arranged on both sides of either the first connector or the second connector, and a pair of second lock members are arranged on the other sides. . When the first connector and the second connector are coupled, a second fitting portion which is a convex portion or a concave portion provided at the tip of the second lock arm portion of the second lock member, and the first lock arm portion of the first lock member The first engaging portion which is a concave portion or a convex portion provided on the connector side is inserted and fitted opposite to each other, and the first locking portion and the second locking portion are locked to each other so that they cannot be detached. Fixed. Thereby, the coupling state of the first connector and the second connector is ensured.

(C) Further, the second lock arm portion of the second lock member is elastically deformed by pressing the pressing protrusion provided on the second lock member from the outside, and as a result, the second fitting portion is fitted into the first fitting portion. It can be detached from the joint. Therefore, the first connector and the second connector can be separated by a simple operation.

(D) Furthermore, by using the first insulating cylinder that supports the connection socket of the first connector and the second insulating cylinder that supports the connection pin of the second connector as an elastic material, The play of dimensional accuracy when the cylinder is inserted and fitted into the second insulating cylinder can be absorbed. Moreover, waterproofness is securable by the sealing effect by elastic materials adhering.

  Hereinafter, details of the embodiment will be described with reference to the drawings. Prior to describing an embodiment of a connector structure of a solar cell module according to the present invention, an outline of a solar cell module to which the present invention is applied will be described with reference to FIGS.

  FIG.1 and FIG.2 has shown an example of the system which connects a solar cell module to a horizontal direction. Here, the “lateral direction” is a direction perpendicular to the roof inclination direction (hereinafter also referred to as “left-right direction”). Incidentally, the “longitudinal direction” is a roof inclination direction (hereinafter also referred to as “vertical direction”).

  FIG. 1 is a perspective view schematically showing a situation during construction for installing a solar cell module on a roof. A plurality of rod-shaped (square members in the illustrated example) base materials 131 are attached in parallel to each other at a predetermined interval (for example, 455 mm or less) along the inclination direction of the roof 130.

  On these base materials 131, a plurality of rails 120 are attached at a predetermined interval d (for example, 306 mm pitch) in a direction orthogonal to the direction of the base materials. The interval between the adjacent rails 120 is set according to the length of the solar cell module 110 in the vertical direction. The solar cell module 110 is installed by fitting the upper and lower frames thereof into the rail grooves 120a of the adjacent rails 120. In the operation of installing the solar cell module 110 on the rail 120, both sides on which the solar cell module 110 is installed can slide on the rail 120, so that workability is very good.

  FIG. 2A is a perspective view showing the surface of the solar cell module 110 of FIG. The solar cell module 110 is made of, for example, a front and back surface of the solar cell 115 covered with a filling sheet (not shown), and further sandwiched between a front surface glass (not shown) and a back cover film on the back, and these are made of aluminum. It has a structure fixed with an outer frame. The outer frame of the solar cell module 110 shown in FIG. 2 (A) is a substantially planar square composed of a lower frame member 111, an upper frame member 112, a left frame member 113, and a right frame member 114. Although not clearly shown in FIG. 2A, a terminal box having a casing extending in the left-right direction along the upper frame member 112 is provided on the back surface side of the solar cell module 110, and external terminals are provided at both ends thereof. The connector which is an electrical connection means is provided. One connector is the first connector 1 protruding outward from the left frame member 13, and the other connector is the second connector 2 protruding outward from the right frame member 14. One of these first connector 1 and second connector 2 is a so-called male connector, and the other is a so-called female connector. Details of these connectors will be described later.

  FIG. 2B is a perspective view showing the back surface of the solar cell module 110 of FIG. The terminal box 118 includes a housing that extends along the upper frame member 112 to the back surface side of the upper frame member 112. In the terminal box 118, the width of the central portion is about twice as wide as the width of other portions. If the terminal box 118 is formed as an integral part with the upper frame member 112, it is preferable that the terminal box 118 is attached at the same time as the upper frame member 112, so that the operation is simplified.

  A cord (not shown) connected to the terminal of each solar cell 115 is accommodated in the casing of the terminal box 118, but the cord for electrical connection with the outside is one solar cell module 110. One cord is connected to the first connector 1 inside, and the other cord is connected to the second connector 2 inside.

  The 1st connector 1 and the 2nd connector 2 are formed in the structure which can be mutually fitted. Therefore, the 1st connector 1 and the 2nd connector 2 which two solar cell modules 110 adjacent in the horizontal direction oppose can be inserted and connected mutually.

  3 and 4 show an example of a method of connecting solar cell modules in the vertical direction.

  FIG. 3 is a perspective view schematically showing a situation during construction for installing the solar cell module on the roof. A plurality of rod-shaped base materials 131 are attached in parallel to each other at a predetermined interval along the inclination direction of the roof 130.

  A rail 220 is attached on the base material 131. The interval between the adjacent rails 220 is set according to the lateral length of the solar cell module 210. The solar cell module 210 is installed by fitting the left and right frames into rail grooves 220 a provided on both sides of the adjacent rails 220. In the operation of installing the solar cell module 210 on the rail 220, both sides on which the solar cell module 210 is installed can slide on the rail 220, so that the workability is very good (see white arrows). When connecting in the vertical direction, a pair of connectors that protrude from the upper and lower frames of the solar cell module 210 are provided. In the illustrated example, the first connector 1 is provided on the upper side and the second connector 2 is provided on the lower side.

  FIG. 4A is a surface view of the solar cell module 210 of FIG. The solar cell module 210 basically has the same structure as the solar cell module of FIG. In the example shown in the figure, the solar cells 215 are arranged in 3 vertical × 4 horizontal, and are appropriately electrically connected inside. The outer frame of the solar cell module 210 shown in FIG. 4 (A) is a substantially planar square composed of a lower frame member 211, an upper frame member 212, a left frame member 213, and a right frame member 214.

  4B is a rear view of the solar cell module 210 of FIG. 3, FIG. 4C is a left side view, and FIG. 4D is a lower side view. In the example shown in the figure, the terminal box is separated into two upper and lower parts. The upper terminal box 218 a includes a housing provided on the back side of the upper frame member 212 along the upper frame member 212. The lower terminal box 218 b includes a housing provided on the back side of the lower frame member 211 along the lower frame member 211. If the terminal box 218a is formed as an integrated part with the upper frame material 212 and the terminal box 218b is formed as an integrated part with the lower frame material 211, the work can be easily performed since the upper frame material 212 and the lower frame material 211 are attached. Therefore, it is preferable.

  The first connector 1 protrudes from the upper surface of the terminal box 218a, and the second connector 2 protrudes from the lower surface of the terminal box 218b. Although the cords connected to the terminals of the respective solar cells 215 are accommodated in the casings of the terminal boxes 218a and 21b, a pair of cords for electrical connection with the outside is provided for each solar cell module 210. One cord is connected to the first connector 1 inside, and the other cord is connected to the second connector 2 inside. In contrast to the illustrated example, the first connector 1 may be provided on the lower side and the second connector 2 may be provided on the upper side.

  The 1st connector 1 and the 2nd connector 2 are formed in the structure which can be mutually fitted. Therefore, the 1st connector 1 and the 2nd connector 2 which two solar cell modules 210 adjacent in the vertical direction oppose can be inserted and connected mutually.

  Next, with reference to FIGS. 5-10, embodiment of the connector structure which consists of the 1st connector 1 and the 2nd connector in the solar cell module shown in FIG.2 and FIG.4 is described in detail. 5 to 10 exemplify the connector structure provided in the vertically connected solar cell module 210 shown in FIG. 4, the same applies to the horizontally connected solar cell module 110 shown in FIG. 2. it can.

  FIG. 5 is a right cross-sectional view showing only a connecting portion of two solar cell modules (not shown as a whole) connected to each other in the vertical direction. The expressions “upper and lower” and “left and right” are in accordance with the display in the surface view of FIG. A first connector 1 protruding upward from the upper side 218a1 of the terminal box 218a of the solar cell module positioned on the lower side, and a second connector protruding downward from the lower side 218b1 of the terminal box 218b of the solar cell module positioned on the upper side Are inserted and fitted to each other. Inside the connecting portion, the head portion 11a of the conductive connection socket 11 of the first connector 1 and the head portion 21a of the conductive connection pin 21 of the second connector 2 are arranged on an axis parallel to the connection direction. The connection pin head 21a is inserted and fitted in the connection socket head 11a. Thereby, an electrical connection is formed. The connection socket 11 is electrically connected to the internal wiring cord 3 in the terminal box 218a through the connection socket base end portion 11b, and the connection pin 21 is internally connected in the terminal box 218b through the connection pin base end portion 21b. It is electrically connected to the wiring cord 4.

  FIG. 6 is a right side cross-sectional view showing the first connector 1 and the second connector 2 shown in FIG. 5 separated and enlarged, (A) shows the second connector 2 and (B) shows the first connector. A connector 1 is shown.

  The second connector 2 will be described with reference to FIG. The 2nd connector 2 is provided with the conductive connection pin 21 arrange | positioned in parallel with the connection direction, and the head 21a of the connection pin 21 is cylindrical shape, and protrudes below rather than the lower side 218b1 of the terminal box 218b. The base end portion 21 b of the connection pin 21 extends into the terminal box 218 b and is fitted and supported and fixed in a hole formed in the base end portion 23 b of the second insulating cylindrical body 23. The base end portion 23b of the second insulating cylinder 23 is in close contact with the inner wall of the terminal box 218b, and is supported and fixed thereby. Therefore, the connection pin 21 is fixed to the terminal box 218b.

  The head portion 23a of the second insulating cylinder 23 has a cylindrical shape, and this cylindrical portion is concentrically surrounded by a predetermined gap 23c from the outer peripheral surface of the head portion 21a of the connection pin 21. Yes. The distal end surface 23a1 of the cylindrical portion further protrudes from the distal end 21a1 of the connection pin head 21a. Behind the head 23a of the second insulator 23, a part of the tip of the second lock member 27 on the left side which will be described later appears.

  In the hole of the base end portion 23 b of the second insulating cylinder 23, the connection pin base end portion 21 b and the core wire 4 a of the internal wiring cord 4 are electrically connected. The base end portion 23 b of the second insulating cylinder 23 also supports and fixes the end portion of the internal wiring cord 4.

  The first connector 1 will be described with reference to FIG. The first connector 1 includes a conductive connection socket 11 arranged in parallel to the connection direction, and a head portion 11a of the connection socket 11 is substantially cylindrical and protrudes above the upper side surface 218a1 of the terminal box 218a. The connection socket head portion 11a has a slit shape in which a plurality of slits 11a2 are cut out in the axial direction from the tip thereof. As a result, when the connection pin head portion 21a is inserted into the connection socket head portion 11a in the connector connected state, the slit 11a2 is slightly opened, and the connection socket head portion 11a elastically elasticates the outer peripheral surface of the connection pin head portion 21a. Thus, the electrical connection is ensured by pressing. In the connector connection state, the tip 21a1 of the connection pin head 21a abuts against the bottom surface 11a1 of the connection socket head 11a.

  The outer peripheral surface of the connection socket 11 is in close contact with and covered with a rigid insulating sleeve 12, and the insulating sleeve 12 is further insulated from the tip of the connecting socket head 11a by the tip of the insulating sleeve 12 protruding further. The Further, the outer peripheral surface of the insulating sleeve 12 is in close contact with the first insulating cylinder 13 and is supported and fixed thereby. Therefore, the outer peripheral surface of the connection socket 11 is indirectly supported by the first insulating cylinder 13.

  The base end portion 13b of the first insulating cylinder 13 is in close contact with the inner wall of the terminal box 218a, and is supported and fixed thereby. Therefore, the connection socket 11 is fixed to the terminal box 218a.

  On the outer peripheral surface of the head portion 13a of the first insulating cylinder 13, a plurality of annular tapered surfaces 13a2 are provided in the axial direction. The annular tapered surface 13a2 is inclined so as to become thinner toward the tip. The head 13a of the first insulating cylinder 13 is inserted and fitted into the head 23a of the second insulating cylinder 23 in the connector connected state. At this time, the annular tapered surface 13a2 has an effect of being easily inserted into the head portion 23a of the second insulating cylinder 23 and difficult to be pulled out.

  The shoulder portion 13a1 projecting outward at the base portion of the head portion 13a of the first insulating cylinder 13 is in contact with the distal end surface 23a1 of the second insulating cylinder 23 in the connector joined state. A part of the first lock member 17 on the left side, which will be described later, appears behind the head 13 a of the first insulator 13.

  In the hole of the base end portion 13 b of the first insulating cylinder 13, the connection socket base end portion 11 b and the core wire 3 a of the internal wiring cord 3 are electrically connected. The base end portion 13 b of the first insulating cylinder 13 also supports and fixes the end portion of the internal wiring cord 3.

Next, a lock mechanism that is one of the features of the connector structure of the present invention will be described.
FIG. 7A is a right side view of the connecting portion in the connector connected state, and FIG. 7B is a surface view of the same.
As clearly shown in the front view of FIG. 7B, a pair of second locking members 26 and 27 are provided on both sides (in this case, the left side and the right side) of the second connector 2 via a predetermined gap. . The second lock members 26 and 27 have a symmetrical structure with respect to a plane including the connector central axis C parallel to the connection direction (in this case, a plane perpendicular to the paper surface).

  On the other hand, a pair of first locking members 16 and 17 are provided on both sides of the first connector 1 (in this case, the left side and the right side) via a predetermined gap. The first lock members 16 and 17 also have a bilaterally symmetric structure with respect to a plane including the connector central axis C parallel to the connection direction (in this case, a plane perpendicular to the paper surface).

  In the connector connected state, as shown in the figure, the second lock member 26 is inserted and fitted into the opposed first lock member 16, and the second lock member 27 is inserted and fitted into the opposed first lock member 17. Combined. These locking mechanisms ensure the reliability of connector connection.

  In contrast to the illustrated example, the second lock member may be provided on the first connector 1 and the first lock member may be provided on the second connector 2.

  8 is a view showing in detail an embodiment of the first connector 1 including the first lock members 16 and 17 shown in FIG. 7, wherein (A) is a front view and (B) is a right side view. (C) is an upper side view. FIG. 10B shows an external perspective view of the first connector 1 of the same embodiment. Since the pair of first lock members 16 and 17 are symmetrical, the first lock member 16 on one side will be described.

  The first lock member 16 has a proximal end portion 16e fixed to the terminal box 218a or integral with the terminal box 218a. A first lock arm portion 16c extends from the base end portion 16e in parallel to the connection direction. A predetermined gap d1 is provided between the innermost surface of the first lock arm portion 16c and the outermost surface of the head portion 13a of the first insulating cylinder. Thereby, the play for inserting the 2nd lock member mentioned later is secured, and will be inserted smoothly.

  The 1st fitting part 16a is a recessed part formed in the surface facing the connector in the 1st lock arm part 16c of a rectangular parallelepiped in a present Example. Referring to FIG. 8A, a first stopper surface 16a3 perpendicular to the connecting direction is formed on the base end side of the concave portion of the first fitting portion 16a, and the distal end of the inserted second lock member Stops against the first stopper surface 16a3. A first tapered surface 16a2 that is inclined outward from the first stopper surface 16a3 toward the distal end side is formed, and a first locking portion 16a1 perpendicular to the connecting direction is formed on the distal end side of the first tapered surface 16a2. ing.

  As shown in FIG. 8C, in the illustrated example, one first lock member 16 has two first fitting portions 16a and 16b, and the other first lock member 17 also has two First fitting portions 17a and 17b are formed. The number and shape of the first fitting portions 16a, 16b, 17a, and 17b formed as the recesses are not limited to the illustrated example, but the first lock member 16 and the first lock member 17 are symmetrical to each other. .

  9 is a view showing in detail one embodiment of the second connector 2 including the second locking members 26 and 27 shown in FIG. 7, wherein (A) is a front view and (B) is a right side view. (C) is a lower side view. FIG. 10A shows an external perspective view of the second connector 2. Since the pair of second lock members 26 and 27 are symmetrical, the second lock member 26 on one side will be described.

  The second lock member 26 has a proximal end portion 26e fixed to the terminal box 218b or integral with the terminal box 218b. A second lock arm portion 26c extends from the base end portion 26e in parallel to the connection direction. A predetermined gap d2 is provided between the innermost surface of the second lock arm portion 26c and the outermost surface of the head portion 23a of the second insulating cylinder. As a result, a space for inserting the second lock member 26 and a space for elastically deforming the second lock arm portion 26c of the second lock member 26 (see white arrows) are secured.

  In this embodiment, the second fitting portion 26a is a convex portion formed on the surface opposite to the connector at the tip of the second lock arm portion 26c. Referring to FIG. 9A, a second stopper surface 26a3 perpendicular to the connecting direction is formed at the tip of the second fitting portion 26a. When the second stopper surface 26a3 is inserted into the first lock member, the second stopper surface 26a3 is formed. It stops when the surface 26a3 hits. A second taper surface 26a2 inclined outward from the second stopper surface 26a3 toward the base end side is formed, and a second locking portion perpendicular to the connecting direction is formed on the base end side of the second taper surface 26a2. 26a1 is formed.

  When connecting the connector, the convex portion of the second fitting portion 26a of the second locking member 26 is inserted along the concave portion of the first fitting portion 16a of the first locking member 16 so that the first fitting portion 26a is inserted. 2 The lock arm portion 26c is elastically bent and deformed inside (see white arrow). Thereby, the convex part of the 2nd fitting part 26a is smoothly inserted in the recessed part of the 1st fitting part 16a of the 1st locking member 16. FIG. In the connector connected state, the second tapered surface 26a2 contacts the first tapered surface 16a2. Further, the second locking portion 26a1 cannot be retracted in the connecting direction by engaging with the first locking portion 16a1, and as a result, the second locking member 26 cannot be detached from the first locking member 16. Combined with each other.

  As shown in FIG. 9C, in the illustrated example, one second lock member 26 has two second fitting portions 26a and 26b, and the other second lock member 27 also has two. Second fitting portions 27a and 27b are formed. The number and shape of the second fitting portions 26a, 26b, 27a, 27b are not limited to the illustrated example, but the second lock member 26 and the second lock member 27 are symmetrical.

  Further, a pressing protrusion 26d protruding outward is provided at an intermediate portion of the second lock arm portion 26c of the second lock member 26. In contrast to this, the other second lock arm portion 27c is also provided with a pressing projection 27d. When separating the connector in the connected state, both of the pair of pressing projections 26d and 27d are pressed from the outside to the inside (that is, toward the connector) (see the white arrow in FIG. 10A). ), The second lock arm portions 26c and 27c are elastically deformed inward (the second locking portion 26a1 is disengaged from the first locking portion 16a1), and the second fitting portions 26a and 27a are first fitted. It becomes possible to detach from the joint portions 16a and 17a.

  FIG. 11 is a view showing another embodiment of the locking mechanism in the connector structure of the present invention. It is the surface view of the connection part in the connector connection state similar to said FIG. 7 (B). In the embodiment of FIG. 11, a pair of first locking members 18 and 19 are provided on the first connector 1 side, and a pair of second locking members 28 and 29 are provided on the second connector 2 side (the illustrated embodiment). Contrary to the example, a pair of second lock members may be provided on the first connector side, and a pair of first lock members may be provided on the second connector side).

  The point that the second lock members 28 and 29 are inserted and fitted into the first lock members 18 and 19 is the same as the embodiment shown in FIGS. In FIG. 11, the first fitting portion 18a formed on the connector-side surface of the first lock arm portion 18c of the first lock member 18 is a convex portion instead of a concave portion (the same applies to the first lock member 19). The second fitting portion 28a formed at the tip of the second lock arm portion 28c of the second lock member 28 is not a convex portion but a concave portion (the same applies to the second lock member 29). It is the same as the embodiment shown in FIGS. 7 to 10 in that it can be detached by pressing the concave pressure projection 28d provided at the intermediate portion of the second lock arm portion 28c of the second lock member.

  Thus, the shape of the first fitting portion and the second fitting portion in the lock mechanism can be variously modified as long as they can be fitted to each other, and these are also included in the scope of the present invention. .

It is a perspective view which shows roughly the condition under construction which installs the solar cell module of a horizontal connection system on a roof. 1A is a perspective view showing the front surface, and FIG. 2B is a perspective view showing the back surface of the solar cell module of FIG. 1. It is a perspective view which shows roughly the condition under construction which installs the solar cell module of a vertical connection system on a roof. 3A is a front view, FIG. 3B is a rear view, FIG. 3C is a left side view, and FIG. 3D is a lower side view of the solar cell module of FIG. It is right side sectional drawing which shows only the connection part of the two solar cell modules (the whole is not shown in figure) mutually connected by the vertical direction. FIG. 6 is a right side cross-sectional view showing the first connector and the second connector shown in FIG. 5 separated and enlarged, (A) showing the second connector and (B) showing the first connector. (A) is a right side view of the connecting portion in the connector connected state, and (B) is a surface view. It is the figure which showed the 1st connector in detail, (A) is a surface view, (B) is a right view, (C) is an upper side view. It is the figure which showed the 2nd connector in detail, (A) is a surface view, (B) is a right view, (C) is an upper side view. (A) is an external perspective view of the second connector, and (B) is an external perspective view of the first connector. It is a figure which shows another Example of the locking mechanism of a connector structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st connector 11 Connection socket 11a Connection socket head part 11b Connection socket base end part 12 Insulating sleeve 13 1st insulating cylinder 13a Fitting cylinder part 13b Support cylinder part 16, 17 1st locking member (recess formation)
16a, 16b, 17a, 17b 1st fitting part (concave part)
16c 1st arm part 16e, 17e 1st base end part 18, 19 1st lock member (convex part formation)
18a, 19b 1st fitting part (convex part)
18c 1st arm part 18e 1st base end part 2 2nd connector 21 Connection pin 21a Connection pin head part 21b Connection pin base end part 23 2nd insulating cylinder 26, 27 2nd locking member (convex part formation)
26a, 26b, 27a, 27b Second fitting part (convex part)
26c, 27c Second arm portion 26d, 27d Protrusion for pressing 26e, 27e Second base end portion 28, 29 Second lock member (recess formation)
28a, 29b 2nd fitting part (concave part)
28c Second arm portion 28d Pressing projection 28e Second base end portion 3, 4 Internal wiring cords 110, 210 Solar cell modules 111, 211 Lower frame material 112, 212 Upper frame material 113, 213 Left frame material 114, 214 Right frame Material 115, 215 Solar cell 118, 218a, 218b Terminal box 120, 220 Rail 120a, 220a Rail groove 121, 221 Rail cover 130 Roof 131 Base material

Claims (4)

In a connector structure for electrically connecting a solar cell module (110, 210) in which a solar cell (115, 215) is fixed in a plane rectangular frame,
A pair of connectors (1, 2) provided in opposite directions parallel to the connection direction of the solar cell module, and fixed to terminal boxes (118, 218a, 218b) formed on the back side of the solar cell module, respectively. One of the first connectors (1) can be connected to the second connector (2) of the adjacent solar cell module, and the other second connector (2) can be connected to the first connector of another adjacent solar cell module ( 1) including the pair of connectors connectable with
The first connector (1) supports a connection socket (11) protruding from one side surface (218a1) of the terminal box in parallel with a connection direction, and supports an outer peripheral surface of the connection socket and is fixed to the terminal box. A first insulating cylinder (13);
The second connector (2) surrounds the connection pin (21) protruding from the other side surface (218b1) of the terminal box in parallel with the connection direction and the head (21a) of the connection pin with a gap. And a second insulating cylinder (23) that supports the outer peripheral surface of the base end portion (21b) of the connection pin and is fixed to the terminal box,
When connecting the first connector in one of the two adjacent solar cell modules and the second connector in the other, the connection pin (21) is inserted and fitted into the connection socket (11) at the same time. The solar cell module connector structure, wherein the first insulating cylinder (13) is inserted and fitted into the second insulating cylinder (23). A pair of first locking members (16, 16) are disposed on both sides of either the first connector (1) or the second connector (2) via a gap and extend parallel to the connecting direction. 17), (18, 19)) and a pair of second locking members ((26, 27), (28, 29) respectively disposed on both sides of the other connector via a gap and extending in parallel with the connecting direction. ))
Each of the pair of first lock members includes a proximal end portion fixed to the terminal box, a first lock arm portion extending in a connecting direction from a distal end of the proximal end portion, and a first lock arm portion A first fitting portion of a convex portion or a concave portion formed on a surface facing the connector, and a first locking portion formed on the first fitting portion,
Each of the pair of second lock members includes a base end portion fixed to the terminal box, a second lock arm portion extending in a connecting direction from a distal end of the base end portion, and a second lock arm portion A concave or convex second fitting part formed on the surface opposite to the connector at the tip, and a second locking part formed on the second fitting part,
When connecting the first connector in one of two adjacent solar cell modules and the second connector in the other, the first lock in the other facing the second fitting portion of the second lock member in one The first locking member and the second locking member are detached by being inserted and fitted into the first fitting portion of the member and the first locking portion and the second locking portion are engaged with each other. The solar cell module connector structure according to claim 1, wherein the connector structure is impossiblely coupled.   Each of the pair of second lock members ((26, 27), (28, 29)) includes a pressing protrusion protruding outward from the second lock arm portion, and both of the pair of pressing protrusions The pair of second lock arm portions are elastically deformed by pressing the connector toward the connector so that the second fitting portion can be detached from the first fitting portion. The connector structure of the solar cell module according to 2.   The connector structure for a solar cell module according to any one of claims 1 to 3, wherein the first insulating cylinder (13) and the second insulating cylinder (23) are formed of an elastic material. .

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