CN218385975U - Cable connector, junction box assembly and photovoltaic assembly - Google Patents

Abstract

The utility model provides a cable connector, terminal box subassembly and photovoltaic module, wherein, the cable connector establish the shell of installation cavity in including, locate the installation cavity in the plug terminal, can stretch into the installation cavity with the plug terminal is grafting complex butt terminal each other, the one end connecting cable of plug terminal is kept away from to the butt terminal, the one end of plug terminal is pegged graft with the butt terminal and the other end extends to outside the shell, the one end that the shell is close to the butt terminal is equipped with the fixed establishment who is used for fixed cable. The utility model discloses a cable connector accepts plug terminals and butt joint terminal in the installation cavity through the shell of integration for the sealed point of cooperation of cable connector only exists in the fixed establishment department of shell tip, reduces the quantity of sealed point, thereby promotes cable connector's sealing performance, the utility model discloses a cable connector installation fit's point is less, makes cable connector's overall structure stronger.

Description

Cable connector, junction box assembly and photovoltaic assembly

Technical Field

The utility model relates to a photovoltaic technology field especially relates to a cable connector, terminal box subassembly and photovoltaic module.

Background

With the rapid development of the photovoltaic industry, ground power stations and roof power stations are limited by land areas, in recent years, the demand of offshore photovoltaic systems is increasing, the industry is in urgent need to develop photovoltaic modules suitable for the use of the offshore photovoltaic systems, the offshore photovoltaic modules are influenced by salt fog, tides, sea ice, ocean currents, typhoons, waves and the like, the requirements on the shock resistance, the water resistance and the corrosion resistance of parts of the offshore photovoltaic modules are high, and particularly, a cable connector for connecting two photovoltaic modules is one of the parts which are most prone to failure.

The existing photovoltaic modules are interconnected through a junction box, a cable and a cable connector, one end of the cable is installed in the junction box, the cable connector at the other end of the cable is connected with the photovoltaic cable connector, one end of the junction box is connected with a positive plug, the other end of the junction box is connected with a negative plug, and the positive plug and the negative plug of every two adjacent photovoltaic modules are oppositely inserted during installation, so that current transmission between the modules is realized.

After the positive plug and the negative plug are connected, the cable connector needs to be fixed and is generally bound on a bracket, and when the cable connector is not bound in place or is installed negligibly by personnel, the cable connector is easy to fall off; in the above-water photovoltaic system, the cable connector is more likely to fall into water to cause insulation failure because the components are in a vibration state due to waves and the like.

Accordingly, there is a need for a new cable connector, junction box assembly and photovoltaic module to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cable connector, terminal box subassembly and photovoltaic module solve above-mentioned problem.

In order to achieve the above object, the present invention provides the following technical solutions:

a cable connector comprises a shell with an installation cavity arranged therein, a plug terminal arranged in the installation cavity, and a butt terminal which can stretch into the installation cavity and is matched with the plug terminal in an inserted manner, wherein one end of the butt terminal, which is far away from the plug terminal, is connected with a cable, one end of the plug terminal is inserted into the butt terminal, while the other end extends out of the shell, and one end of the shell, which is close to the butt terminal, is provided with a fixing mechanism for fixing the cable.

Furthermore, the cable connector further comprises a clamping piece arranged in the mounting cavity, and a first stop block arranged on the outer side of the butt joint terminal and matched with the clamping piece.

Furthermore, the butt-joint terminal is provided with a butt-joint cavity for accommodating the plug-in terminal, the cable connector further comprises a clamping piece arranged in the butt-joint cavity or sleeved outside the plug-in terminal, and a second stop block arranged in the butt-joint cavity to be matched with the clamping piece, and the inner diameter size of the middle of the clamping piece is smaller than that of the two ends of the clamping piece.

Further, the fixing mechanism comprises a sealing structure used for sealing the cable and a fastening structure which is arranged on the outer side of the sealing structure and used for fastening the cable.

Further, the terminal surface of shell is equipped with the step of inside sunken formation, seal structure is used for the cover to establish the sealing washer of cable including locating installation department on the step, connecting in the inboard of installation department, the shell has certainly the protruding muscle of step orientation grafting direction projection, protruding muscle and seal structure looks butt.

Furthermore, fastening structure locates the outside of seal structure along the grafting direction, fastening structure is including locating the installation intracavity and surrounding in the elasticity rand around the cable, the internal diameter size grow when the elasticity rand receives along its radial outside external force.

Further, the elasticity rand includes fixed part, a plurality of elastic component of being connected with the fixed part, and a plurality of elastic component set up along the circumferencial direction interval of fixed part, the elastic component is followed the axial extension of fixed part, just the elastic component is kept away from the one end of fixed part sets up along radial inside slope.

Furthermore, fastening structure still includes interior piece, cooperation of strutting the spacing fixed knot of piece constructs, interior piece is including stretching into interior support in the elasticity rand, running through the cable hole of interior support, the length of interior support is greater than fixed knot constructs extremely the distance of elastic component.

Further, the inner support piece further comprises a clamping hook extending along the axial first end of the inner support body in the lateral direction, and a first limiting portion of a second end, the fixing structure is provided with a second limiting portion limiting the clamping hook, the outer diameter of the first limiting portion is larger than the inner diameter of the second limiting portion, and the outer diameter of the second limiting portion is larger than the size of the installation cavity.

Furthermore, the fixing structure and the inner wall of the mounting cavity are matched with each other by adopting a protrusion and a groove, the fixing structure comprises an extending part extending from the second limiting part towards the sealing structure, and the protrusion is arranged on the surface of the extending part adjacent to the inner wall of the mounting cavity; one end of the extending part, which is far away from the second limiting part, is provided with a first end face and a second end face, the first end face is in butt joint with the mounting part, and the second end face is in butt joint with the fixing part.

Further, fixed establishment is still including locating the boss between seal structure and the fastening structure, the boss is the lateral T type, the boss include with installation department and first terminal surface looks butt first section, be connected first section and respectively with the second section of sealing washer and second terminal surface looks butt.

Furthermore, the fastening structure is arranged on the outer side of the sealing mechanism along the radial direction of the sealing mechanism, the fastening structure comprises a fastening piece arranged on the outer side of the shell and connected with the shell in a threaded manner, a third limiting part protruding towards the installation cavity is arranged at the end part of the fastening piece, and the third limiting part is abutted to one end, far away from the installation part, of the sealing ring.

Furthermore, the fastening structure further comprises a pressing block arranged between the fastening piece and the sealing structure, one end of the pressing block is abutted to the end faces of the mounting portion and the shell, and the other end of the pressing block is abutted to the third limiting portion.

The utility model also provides a terminal box, the terminal box include box body, lug connection in the foretell cable connector of box body, be equipped with metal substrate in the box body, cable connector's spliced terminal extends the outer one end of shell and extends into in the box body and with metal substrate welded connection.

The utility model also provides a terminal box, the terminal box includes the box body, lug connection in the foretell cable connector's of box body shell, locate metal terminal in the shell, locate the fixed establishment of the one end of box body is kept away from to the shell, metal terminal is plug terminal or butt joint terminal.

The utility model also provides a terminal box subassembly, the terminal box subassembly include foretell terminal box, with metal terminal in the terminal box pegs graft complex butt joint metal terminal, butt joint metal terminal is through another box body of a cable lug connection, perhaps butt joint metal terminal is through another butt joint metal terminal of a cable connection.

The utility model also provides a photovoltaic module, photovoltaic module includes the lamination piece, is fixed in the foretell terminal box at the lamination piece back.

Compared with the prior art, the utility model discloses a cable connector's beneficial effect lies in: the utility model discloses a cable connector accepts in the installation cavity through the shell of integration when with plug terminal and butt joint terminal grafting cooperation for the sealed point of cooperation of cable connector only exists in the fixed establishment department of shell tip, reduces the quantity of sealed point, thereby promotes cable connector's sealing performance, is particularly useful for in the high humid environment, just, the utility model discloses a cable connector installation fit's point is less, makes cable connector's overall structure stronger.

Drawings

Fig. 1 is a schematic perspective view of a cable connector according to an embodiment of the present invention.

Fig. 2 is an exploded view of the components of the cable connector of the embodiment of fig. 1.

Fig. 3 is a top view of the cable connector of the embodiment of fig. 1.

Fig. 4 isbase:Sub>A sectional view taken alongbase:Sub>A-base:Sub>A in fig. 3.

Fig. 5 is an enlarged view of a portion a of fig. 4.

Fig. 6 is a schematic perspective view of a cable connector according to another embodiment of the present invention.

Fig. 7 is an exploded view of the components of the cable connector of the embodiment of fig. 6.

Fig. 8 is a top view of the cable connector of fig. 6.

Fig. 9 is a sectional view taken along the direction B-B of fig. 8.

Fig. 10 is a schematic perspective view of a junction box according to an embodiment of the present invention.

Fig. 11 is a schematic perspective view of the junction box assembly according to an embodiment of the junction box assembly of the present invention.

Fig. 12 is a schematic perspective view of a terminal box assembly according to another embodiment of the present invention.

The cable connector comprises 100-a cable connector, 10-a housing, 11-an installation cavity, 12-an end face, 121-a step, 122-a convex rib, 20-a plug terminal, a sealing plug, 30-a butt joint terminal, 31-a butt joint cavity, 32-a first stop block, 33-a second stop block, 40-a clamping member, 41-a clamping part, 50-a clamping member, 60-a fixing mechanism, 70-a fastening structure, 71-an elastic collar, 711-a fixing part, 712-an elastic member, 72-an inner supporting member, 721-an inner supporting body, a clamping hook, 723-a first limiting part, 73-a fixing structure, 731-a second limiting part, 732-an extending part, 733-a bulge, 734-a first end face, 735-a second end face, 74-a reinforcing block, 741-a first section, 742-a second section, 75-a fastening member, 751-a third limiting part, 76-a pressing block, 80-a sealing structure, 81-an installation part, 82-a sealing ring, 83-a fixing rib, 200-a 210-a junction box, a metal substrate, 212-a junction box, 300-a sealing plug box, and a sealing plug-a terminal box.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It should be noted that the directions or positional relationships indicated in the present invention are based on the directions or positional relationships shown in the auxiliary drawings, and are only for the convenience of simplifying the description of the present invention, and the indication or suggestion that the indicated device must have a specific direction, be constructed in a specific direction and be operated is not understood as the limitation of the scope of the present invention.

In the various drawings of the present invention, certain dimensions of structures or portions may be exaggerated in relation to other structures in part for ease of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present invention.

The utility model provides a cable connector 100 for current transmission between the photovoltaic module, as shown in fig. 1 to fig. 9, cable connector 100 establish the shell 10 of installation cavity 11 in including, locate plug terminal 20 in the installation cavity 11, can stretch into in the installation cavity 11 with plug terminal 20 grafting complex butt joint terminal 30, the one end connection cable 300 of plug terminal 20 is kept away from to butt joint terminal 30, plug terminal 20's one end is pegged graft with butt joint terminal 30 and the other end extends to outside the shell 10, the tip that plug terminal 20 was kept away from to butt joint terminal 30 is used for connecting cable 300, the one end that the outer 10 shell is close to butt joint terminal 30 is equipped with the fixed establishment 60 that is used for fixed cable 300.

The utility model discloses a cable connector 100 accepts plug terminal 20 and butt joint terminal 30 in installation cavity 11 through shell 10 of integration to utilize fixing mechanism 60 to fix and seal, make cable connector 100's the sealed point of cooperation only exist in the fixing mechanism 60 department of shell 10 tip, reduce the quantity of sealed point, thereby promote cable connector 100's sealing performance, be particularly useful for in the high wet photovoltaic power plant project on water, just, the utility model discloses a cable connector 100 installs the complex position less, makes cable connector 100's overall structure stronger.

Further, as shown in fig. 2 and fig. 7, the cable connector 100 further includes a clamping member 40 disposed in the installation cavity 11 for fixing the butt terminal 30, and a first stopper 32 disposed on an outer wall of the butt terminal 30 for cooperating with the clamping member 40. Joint spare 40 includes edge joint portion 41 that butt joint terminal 30 circumference interval set up, joint portion 41 sets up along grafting direction leanin, first backstop piece 32 certainly butt joint terminal 30's outside projection forms, first backstop piece 32 have with the spigot surface of 41 equidirectional slopes of joint portion, with the butt joint face of 41 looks butt joint of joint portion to fixed butt joint terminal 30 and to butt joint terminal 30 spacing on the grafting direction.

Further, the docking terminal 30 has a docking cavity 31 for accommodating the plug terminal 20, the cable connector 100 further includes a retaining member 50 disposed in the docking cavity 31 or sleeved outside the plug terminal 20, and a second stopper 33 disposed inside the docking cavity 31 to match with the retaining member 50, an inner diameter of the retaining member 50 is smaller than inner diameters of the two ends, and the plug terminal 20 is fixed and limited by the middle position of the retaining member 50.

Specifically, the second stopper 33 protrudes outward from the inner wall of the mating terminal 30 to limit the movement of the catch 50 along the plugging direction. In this embodiment, the second stopping block 33 and the first stopping block 32 are arranged at an interval in the inserting direction, so that the clamping member 50 and the clamping member 40 are independent from each other and are not affected by each other.

Further, as shown in fig. 2 and 7, the fixing mechanism 60 includes a sealing structure 80 for sealing the cable 300, and a fastening structure 70 disposed outside the sealing structure 80 and used for fastening the cable 300, where the fastening structure 70 and the sealing structure 80 cooperate to fix and seal the butt terminal 30, prevent moisture from entering into the installation cavity 11 from one end of the cable 300, and avoid insulation failure of the cable connector 100.

As a preferred embodiment of the cable connector of the present invention, as shown in fig. 2, the end surface 12 of the housing 10 is provided with a step 121 formed by being recessed inwards, the sealing structure 80 includes an installation portion 81 disposed on the step 121, and a sealing ring 82 connected to the installation portion 81 and extending towards the plugging direction, and the sealing ring 82 can be sleeved outside the cable 800.

The housing 10 has a rib 122 protruding from the step 121 toward the plugging direction, and the rib 122 abuts against the sealing structure 80, that is, the rib 122 seals the cable connector 100 in a direction perpendicular to the plugging direction, so as to prevent water vapor from entering the mounting cavity 11 along the matching position of the mounting portion 81 and the step surface 121, thereby achieving the purpose of dual waterproof and further enhancing the waterproof performance of the cable connector 100.

As another preferred embodiment of the present invention, as shown in fig. 1 to 5, the fastening structure 70 is disposed outside the sealing structure 80 along the plugging direction, the fastening structure 70 includes an elastic collar 71 disposed in the installation cavity 11 and surrounding the cable, and the inner diameter of the elastic collar 71 increases when receiving an external force along the radial direction.

In this embodiment, the mounting portion 81 of the sealing structure 80 is attached to the mounting cavity 11, the sealing ring 82 extends along the radial direction of the housing 10 to seal the cable 300, and the rib 122 abuts against the side portion of the sealing ring 82 close to the step 121, so as to improve the sealing performance of the cable connector 100.

Specifically, the inner diameter of the elastic collar 71 can be designed to be large, so that the elastic collar 71 can be penetrated by the cable 300 when being in a deformed state, and after the external force is removed, the elastic collar 71 is clamped at the outer side of the cable 300 in the process of restoring to the natural state in advance, and the design of the elastic collar 71 can improve the sealing performance between the fastening structure 70 and the cable 300 while fixing the cable 300, so as to improve the sealing performance of the cable connector 100.

Further, as shown in fig. 5, the elastic collar 71 includes a fixing portion 711, and a plurality of elastic members 712 connected to the fixing portion 711, wherein the plurality of elastic members 712 are disposed at intervals along a circumferential direction of the fixing portion 711, and a certain distance is provided between two adjacent elastic members 712 to provide a space for the elastic members 712 to deform. In this embodiment, the elastic member 712 extends along the axial direction of the fixing portion 711, and one end of the elastic member 712 away from the fixing portion 711 is disposed to be inclined inward in the radial direction, that is, in a natural state, the inner diameter of the elastic member 712 is smaller than the inner diameter of the fixing portion 711, so as to achieve a fixing and sealing effect on the cable.

Further, the fastening structure 70 further includes an inner supporting member 72 and a fixing structure 73 that is engaged with the inner supporting member 72 for limiting, the inner supporting member 72 extends into the elastic collar 71, and applies a radially outward external force to the elastic member 712, so that the elastic member 712 is elastically deformed to have an enlarged inner diameter, which is beneficial for the cable 300 to pass through smoothly, and stores elastic potential energy, and then, in the process of restoring the elastic member 712 to the natural state, the elastic member 712 releases the elastic potential energy, and applies a radially inward external force to the inner supporting member 72, so that the inner supporting member 72 moves toward a direction away from the elastic collar 71, and a space for abdicating is provided for the process of restoring the natural state of the elastic member 712.

Wherein, the inner supporting member 72 includes an inner supporting body 721 capable of extending into the elastic collar 71, and a cable hole penetrating through the inner supporting body 721 for a cable to pass through, the length of the inner supporting body 721 is greater than the distance from the fixing structure 73 to the elastic member 712, so that the inner supporting body 721 can apply an external force to the elastic collar 71.

The inner supporting member 72 further includes a hook 722 extending laterally along the first end of the inner supporting member 721 in the axial direction, and a first limiting portion 723 at the second end, so as to limit the inner supporting member 721 in the inserting direction.

Further, the fixing structure 73 has a second limiting portion 731 for limiting the hook 722, an outer diameter of the first limiting portion 723 is larger than an inner diameter of the second limiting portion 731, so as to limit the inner supporting member 72 by the fixing structure 73, an outer diameter of the second limiting portion 731 is larger than a size of the installation cavity 11, the second limiting portion 731 can be lapped on the end surface 12 of the housing 10, limit the fixing structure 73 in the plugging direction, prevent the fixing structure 73 from falling off from the housing 10, and simultaneously seal the end portion of the housing 10 by the fixing structure 73.

In this embodiment, the fixing structure 73 and the inner wall of the mounting cavity 11 are matched with each other by a protrusion 733 and a groove 13, the fixing structure 73 includes an extending portion 732 extending from the second limiting portion 731 toward the sealing structure 80, and the protrusion 733 is disposed on the surface of the extending portion 732 adjacent to the inner wall of the mounting cavity 11, so as to mount the fixing structure 73 on the housing 10.

One end of the extending portion 732, which is far from the second limiting portion 731, has a first end surface 734 and a second end surface 735, the first end surface 734 is abutted with the mounting portion 81, and the second end surface 735 is abutted with the fixing portion 81, so that the elastic collar 71 and the sealing structure 80 are simultaneously limited between the step 121 and the fixing structure 73 of the housing 11.

In this embodiment, the fixing mechanism 60 further includes a reinforcing block 74 disposed between the sealing structure 80 and the fastening structure 70, the reinforcing block 74 is in a lateral T shape, the reinforcing block 74 includes a first section 741 in contact with the mounting portion 81 and the first end surface 734, and a second section 742 connecting the first section 741 and respectively in contact with the sealing ring 82 and the second end surface 735, and the reinforcing block 74 is filled between the sealing structure 80 and the fastening structure 70 to improve the bonding strength and the sealing performance therebetween.

As another preferred embodiment of the present invention, as shown in fig. 6 to 9, the fastening structure 70 is disposed on the outer side of the sealing mechanism along the radial direction, the fastening structure 70 includes a fastening member 75 disposed on the outer side of the housing 10 and connected with the threaded portion thereof, the end portion of the fastening member 75 is provided with a third limiting portion 751 protruding toward the inside of the mounting cavity 11, the third limiting portion 751 abuts against one end of the sealing ring 82 far away from the mounting portion 81, so as to abut against the mounting portion 81 and limit the mounting portion 81 between the step 121 and the third limiting portion 751 in the plugging direction.

In this embodiment, as shown in fig. 9, the sealing ring 82 of the sealing structure 80 extends along the plugging direction, the rib 122 abuts against the mounting portion 81, and the fixing rib 83 is provided on the inner wall of the sealing ring 82 to fix and seal the cable 300.

Further, the fastening structure 70 further includes a pressing block 76 disposed between the fastening member 75 and the sealing structure 80, one end of the pressing block 76 is abutted to the mounting portion 81 and the end surface 12 of the housing 10, and the other end is abutted to the third limiting portion 751, so as to enhance the bonding strength and the sealing performance between the fastening structure 70 and the sealing structure 80.

The utility model provides a terminal box 200, as shown in fig. 10, the terminal box includes box body 210, lug connection in foretell cable connector 100 of box body 210, be equipped with metal substrate 211 in the box body 210, the one end that plug terminal 20 of cable connector 100 extends outside shell 10 extends into in the box body 200 and with metal substrate 211 welded connection is in order to realize the electric connection between plug terminal 20 and the metal substrate 211.

The utility model discloses a terminal box 200, with cable connector 100 snap-on with the lateral wall of box body 210, perhaps, shell 10 with the integrative injection moulding of box body 210, promptly, cable connector 100 snap-on is at photovoltaic module's the back, in photovoltaic power plant system on water, cable connector 100 can not be because of being in for a long time and then the state of vibrations, also can not fall into the aquatic, can avoid cable connector 100 to appear the problem of installation failure or insulation failure, and then can ensure photovoltaic power plant's security performance.

In this embodiment, the terminal box further includes a sealing plug 212 disposed at an opening of the plug terminal 20 facing the metal substrate 211, so as to prevent the glue in the box body 210 from flowing into the interior of the plug terminal 20 through the opening.

The utility model provides another kind of terminal box 200 still, terminal box 200 include box body 210, direct connection in the shell 10 of the foretell cable connector 100 of box body 210, locate metal terminal in the shell 10, locate the fixed establishment 60 of the one end of box body 210 is kept away from to shell 10, metal terminal is plug terminal 20 or butt joint terminal 30, the preferred plug terminal that is of metal terminal in the utility model.

The utility model provides a terminal box 200, shell 10 snap-on box body 210 with box body 210 integrated into one piece, make the open position of whole terminal box 200 only keep away from the tip of box body 210 at shell 10, also namely, the sealed point of whole terminal box 200 is only one, the inside position and the route of steam invasion terminal box 200 that have significantly reduced, promote terminal box 200's sealing performance, and, terminal box 200 is located photovoltaic module's the back, can not be in unsettled state, make terminal box 200 be applicable to the great photovoltaic power plant system on water of humidity, can guarantee photovoltaic power plant's security performance effectively.

It is understood that the housing 10 can also be snapped or plugged onto the box 210, and the terminal box 200 can be fixed on the photovoltaic module.

In practical applications, the two junction boxes 200 are connected by the single butt-joint terminal 30 to butt-joint the plug-in terminal 20, so as to realize the electrical connection between the two photovoltaic modules.

The present invention further provides a junction box assembly 400, as shown in fig. 11 and 12, the junction box assembly 400 includes the junction box 200, and a butt metal terminal in plug-in fit with the metal terminal in the junction box 200, the butt metal terminal is directly connected to another box body 210 through a cable 300, please refer to fig. 12; alternatively, the metal terminals are connected to another metal terminal through a cable 300, and the other metal terminal is plugged into another junction box 200, please refer to fig. 11.

The two terminal box assemblies 300 can realize current transmission between two adjacent photovoltaic assemblies, and the metal terminal matched position in the terminal box assembly 300 is located on the back of the photovoltaic assembly and cannot be suspended or fall into water, so that the safety of the terminal box 200 is ensured.

The utility model also provides a photovoltaic module (not shown), photovoltaic module includes the lamination piece, is fixed in the foretell terminal box 200 at the lamination piece back to go out photovoltaic module's electric current.

To sum up, the utility model discloses a cable connector 100 accepts plug terminal 20 and butt joint terminal 30 in installation cavity 11 through shell 10 of integration for the sealed point of cooperation of cable connector 100 only exists in the fixed establishment 60 department of shell 10 tip, reduces the quantity of sealed point, thereby promotes cable connector 100's sealing performance, is particularly useful for in the high wet photovoltaic power plant project on water, just, the utility model discloses a cable connector 100 installation complex position is less, makes cable connector 100's overall structure stronger.

It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The above detailed description of a series of embodiments is only for the purpose of illustration, and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications that do not depart from the spirit of the invention.

Claims (17)

1. A cable connector, comprising: establish the shell of installation cavity, locate the spliced terminal of installation cavity in, can stretch into the installation cavity with spliced terminal is grafting complex butt terminal each other, the one end connection cable of spliced terminal is kept away from to the butt terminal, spliced terminal's one end is pegged graft with the butt terminal and the other end extends to outside the shell, the one end that the shell is close to the butt terminal is equipped with the fixed establishment who is used for fixed cable.

2. The cable connector of claim 1, wherein: the cable connector further comprises a clamping piece arranged in the mounting cavity and a first stop block arranged on the outer side of the butt joint terminal and matched with the clamping piece.

3. The cable connector of claim 2, wherein: the butt joint terminal is provided with a butt joint cavity for accommodating the plug terminal, the cable connector further comprises a clamping piece arranged in the butt joint cavity or sleeved outside the plug terminal, and a second stop block arranged inside the butt joint cavity to be matched with the clamping piece, and the inner diameter size of the middle of the clamping piece is smaller than that of the two ends of the clamping piece.

4. The cable connector according to any one of claims 1 to 3, wherein: the fixing mechanism comprises a sealing structure used for sealing the cable and a fastening structure which is arranged on the outer side of the sealing structure and used for fastening the cable.

5. The cable connector of claim 4, wherein: the terminal surface of shell is equipped with the step of inside sunken formation, seal structure is used for the cover to establish the sealing washer of cable including locating installation department on the step, connecting in the inboard of installation department, the shell has certainly the protruding muscle of step orientation grafting direction projection, protruding muscle and seal structure looks butt.

6. The cable connector of claim 5, wherein: the fastening structure is arranged on the outer side of the sealing structure along the plugging direction, the fastening structure comprises an elastic clamping ring which is arranged in the installation cavity and surrounds the periphery of the cable, and the inner diameter of the elastic clamping ring is increased when the elastic clamping ring receives external force along the radial direction outwards.

7. The cable connector of claim 6, wherein: the elasticity rand includes fixed part, a plurality of elastic component that are connected with the fixed part, and a plurality of elastic component set up along the circumferencial direction interval of fixed part, the elastic component is followed the axial extension of fixed part, just the elastic component is kept away from the one end of fixed part sets up along radial inside slope.

8. The cable connector of claim 7, wherein: fastening structure still includes interior piece, cooperation of strutting the spacing fixed knot of piece constructs, interior piece of strutting is including stretching into interior chaplet in the elasticity rand, running through the cable hole of interior chaplet, the length of interior chaplet is greater than fixed knot constructs extremely the distance of elastic component.

9. The cable connector of claim 8, wherein: interior brace piece still includes the pothook that extends along the axial first end of interior brace body and side direction, the first spacing portion of second end, fixed knot constructs have right the spacing portion of the spacing second of pothook, the external diameter of first spacing portion is greater than the internal diameter of the spacing portion of second, the external diameter of the spacing portion of second is greater than the size of installation cavity.

10. The cable connector of claim 9, wherein: the fixing structure and the inner wall of the mounting cavity are matched with each other by adopting a bulge and a groove, the fixing structure comprises an extension part extending from the second limiting part towards the sealing structure, and the bulge is arranged on the surface of the inner wall of the mounting cavity adjacent to the extension part; one end of the extending part, which is far away from the second limiting part, is provided with a first end face and a second end face, the first end face is in butt joint with the mounting part, and the second end face is in butt joint with the fixing part.

11. The cable connector of claim 10, wherein: the fixing mechanism is characterized by further comprising a reinforcing block arranged between the sealing structure and the fastening structure, the reinforcing block is in a lateral T shape, and the reinforcing block comprises a first section and a second section, wherein the first section is connected with the mounting portion and the first end face in an abutting mode, and the second section is respectively connected with the sealing ring and the second end face in an abutting mode.

12. The cable connector of claim 5, wherein: the fastening structure is located seal structure is along its radial outside, fastening structure is including locating the shell outside and with shell threaded connection's fastener, the tip of fastener is equipped with the spacing portion of the third that stretches towards the installation intracavity, the spacing portion of third with the sealing washer is kept away from the one end looks butt of installation department.

13. The cable connector of claim 12, wherein: the fastening structure further comprises a pressing block arranged between the fastening piece and the sealing structure, one end of the pressing block is in butt joint with the end faces of the installation part and the shell, and the other end of the pressing block is in butt joint with the third limiting part.

14. A terminal block, characterized by: the junction box comprises a box body and the cable connector as claimed in any one of claims 1 to 13 connected with the box body, wherein a metal substrate is arranged in the box body, and one end of the plug terminal of the cable connector, which extends out of the shell, extends into the box body and is connected with the metal substrate in a welding mode.

15. A terminal block, characterized by: the terminal box comprises a box body, a shell of the cable connector according to any one of claims 1 to 13 directly connected to the box body, a metal terminal arranged in the shell, and a fixing mechanism arranged at one end of the shell far away from the box body, wherein the metal terminal is a plug terminal or a butt terminal.

16. A terminal block assembly, comprising: the junction box comprises the junction box body as claimed in claim 15, and a butt metal terminal which is matched with the metal terminal in the junction box in a plugging mode, wherein the butt metal terminal is directly connected with another box body through a cable, or the butt metal terminal is connected with another butt metal terminal through a cable.

17. A photovoltaic module, characterized by: the photovoltaic module comprises the junction box of claim 14 or 15.

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