CN201518354U

CN201518354U - Dedicated connecting terminal for circuit board of photovoltaic junction box

Info

Publication number: CN201518354U
Application number: CN200920236067XU
Authority: CN
Inventors: 郭小萍; 姜和兴
Original assignee: JIANGSU JINWEI ELECTRICAL TECHNOLOGY CO LTD
Current assignee: JIANGSU JINWEI ELECTRICAL TECHNOLOGY CO LTD
Priority date: 2009-09-23
Filing date: 2009-09-23
Publication date: 2010-06-30
Anticipated expiration: 2019-09-23

Abstract

The utility model provides a dedicated connecting terminal for a circuit board of a photovoltaic junction box. The connecting terminal comprises a casing as well as a conductor and a spring piece arranged in the casing; a wire inlet is formed on the casing; the spring piece is arranged in the casing; one end of the spring piece is fixed on the inner surface of the housing, and the other end of the spring piece is propped against the side edge of the conductor and is in elastic contact with a conductive wire inserted into the casing; a first spring leaf and a second spring leaf are arranged at one end of the spring leaf in contact with the conductive wire; the first spring leaf is in V-shaped connection with the second spring leaf; and a plurality of convex teeth are formed at the tail end of the first spring leaf. In the utility model, convex teeth are formed at the tail end of the second spring leaf, therefore, when the spring piece is in elastic contact with the conductive wire, the friction between the spring piece and the conductive wire is increased, the conductive wire is not easily pulled out after being inserted in, the locking capacity of the connecting terminal is greatly increased, and the connection between the conductive wire and the conductor is more reliable.

Description

The binding post of photovoltaic junction box wiring board special use

Technical field

The utility model relates to a kind of binding post, and the binding post of photovoltaic junction box wiring board special use particularly belongs to the technical field of wire connection device.

Background technology

Binding post is a kind of jockey of being electrically connected of being used to realize.Because binding post is easy to connect, and is widely used in various electric power place.Recently, along with the development of photovoltaic industry, binding post is used to terminal box.First generation photovoltaic junction box built in bypass diode adopts plug-in type more, when inserting the metalwork surface, diode can produce contact resistance, when photovoltaic module accident occurs and hinders admittedly, the built in bypass diode can pass through very big electric current, bypass diode can produce power loss, and surface temperature will sharply raise, in addition the power consumption of bypass diode and metalwork contact resistance generation, make the diode surface temperature higher, therefore influence the operate as normal of the overall performance and the photovoltaic module of terminal box; Second generation photovoltaic junction box adopts the wiring board design, bypass diode directly weld in the circuit board, can not produce contact resistance, has improved the functional reliability of bypass diode, confluxes and is with and the connectivity problem of terminal box but occurred photovoltaic module again.For photovoltaic module the conflux band and the wiring problem of terminal box, in terminal box, use binding post.Traditional binding post, comprise housing, electric conductor, described housing is provided with incoming line, and lead passes incoming line, links into an integrated entity by screw and electric conductor, the binding post of this structure, owing to realize, therefore, need running check or tighten again with being connected of electric conductor by screw, prevent because of reasons such as disturbance, temperature cycles, the disconnected thigh of twisted wire cause lead and electric conductor contact to become flexible, and install cumbersome.

In order to solve the problems of the technologies described above, Chinese patent literature discloses a kind of binding post, and the patent No. of the document is " ZL93214713.5 ", patent name is " a kind of spring connector lug ", and this binding post comprises housing, connector and spring leaf composition; spring leaf connects lead being subjected to external force deformation by distortion, therefore operates more convenient; but the binding post of this structure, lead and electric conductor contact are loosening easily.

The utility model content

Technical problem to be solved in the utility model provides a kind of easy to operate, lead is connected photovoltaic junction box wiring board special use reliable and simple in structure with electric conductor binding post.

In order to solve the problems of the technologies described above, the binding post of the utility model photovoltaic junction box wiring board special use, comprise housing, be arranged on electric conductor and spring leaf in the described housing, described housing is provided with incoming line, described spring leaf is arranged in the described housing, described spring leaf one end is fixed on the described shell inner surface, the other end is against on the described electric conductor side, and touch mutually with the lead elastic force that inserts housing, described spring leaf comprises first shell fragment with the end that lead touches mutually, second shell fragment, described first shell fragment is connected with second shell fragment is V-shaped, and the described first shell fragment tail end is provided with some double wedges.

The binding post of above-mentioned photovoltaic junction box wiring board special use, wherein, described housing is provided with a button, and described housing is passed in described button lower end, and is resisted against on the surface of described spring leaf, and the upper end extends in outside the described housing.

The binding post of above-mentioned photovoltaic junction box wiring board special use, wherein, described button is a T shape member, the lower surface of described T shape member is the inclined-plane, both sides, described T shape member lower end are respectively equipped with a barb-like projection, after button pressed, the barb-like projection of button both sides matched with the flange of housing button porch, prevented that described T shape member from separating with described housing under certain external world or human factor situation.

Adopt the binding post of above-mentioned photovoltaic junction box wiring board special use, owing to be provided with a spring leaf in the housing of binding post, when connecting lead, the elastic force by spring leaf is pressed on lead on the electric conductor inwall, lead and electric conductor are linked into an integrated entity, thus easy to connect, reliable; In addition, because the end that described spring leaf contacts with lead comprises first shell fragment, second shell fragment, described first shell fragment is connected with second shell fragment is V-shaped, the described first shell fragment tail end is provided with some double wedges, because the tail end of second shell fragment is provided with double wedge, when spring leaf contacts with lead elastic force, increased the frictional force between spring leaf and the lead, just be difficult for being pulled out after lead is inserted, improved the lock ability of binding post greatly, make between lead and the electric conductor be connected more reliable; In addition, owing to also be provided with a button on the housing, when lead is disconnected, only need press the button, by the button lower end spring leaf be rotated, the end that spring leaf is contacted with lead unclamps, thereby lead and electric conductor are separated, and therefore, uses fairly simple; And because button is a T shape member, both sides, T shape member lower end are respectively equipped with a barb-like projection, prevent to be extracted from housing button groove, have guaranteed button role in binding post.

Description of drawings

Fig. 1 is the structural representation that the utility model connects

Fig. 2 is the structural representation of the utility model spring leaf

Fig. 3 is the vertical view of the utility model Fig. 2

Fig. 4 is the structural representation of the utility model button

Fig. 5 is the structural representation of the utility model electric conductor

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in the figure, in order to solve the problems of the technologies described above, the binding post of the utility model photovoltaic junction box wiring board special use, comprise housing 1, electric conductor 2, spring leaf 3, cover plate, housing 1 is provided with incoming line, and lead can insert in the housing 1 by incoming line, and housing 1 links into an integrated entity by securing member with cover plate.Electric conductor 2 is respectively equipped with the plane institution movement of side 21 for both sides, electric conductor 2 lower ends are provided with Extendible flake 22, be used to connect other conductors, electric conductor 2 is fixedly installed in the housing 1 by clamping or other modes with housing 1 inwall, spring leaf 3 is arranged in the housing 1, described spring leaf 3 one ends are fixed on described housing 1 inner surface by pivot pin or other modes, the other end is against on described electric conductor 2 sides, and touch mutually with lead 4 elastic force that insert housing 1, described spring leaf 3 comprises first shell fragment 31 with the end that lead 4 touches mutually, second shell fragment 32, described first shell fragment 31 and 32 V-shaped connections of second shell fragment, described first shell fragment, 31 tail ends are provided with some double wedges 331, when lead 4 inserted housing 1, lead 4 was inserted between spring leaf 3 and electric conductor 2 sides, and lead 4 is contacted with spring leaf 3 elastic force; Owing to be provided with a spring leaf 3 in the housing 1 of binding post, when connecting lead, the elastic force by spring leaf 3 is pressed on lead on electric conductor 2 sides, lead and electric conductor are linked into an integrated entity, thus easy to operate, connect reliably.Because the tail end of first shell fragment 31 of spring leaf 3 is provided with double wedge 331, lead 4 contacts with lead 4 by the double wedge 331 of spring leaf 3, increased the frictional force between spring leaf 3 and the lead 4, after being inserted, lead 4 just is difficult for being pulled out, improved the lock ability of binding post greatly, make between lead 4 and the electric conductor 2 be connected more reliable.Housing 1, cover plate 6 and button 5 all select for use Reinforced Nylon as best insulating material, and the ability that it has remarkable anti-leakage current to puncture can reduce air and the leakage current distance of creeping thus; Select for use red copper as electric conductor 2, make it have excellent conducting performance; Spring leaf 3 is selected the SUS301 stainless steel for use.

For easy to operate, also be provided with button 5 on the housing 1, described housing 1 is passed in described button 5 lower ends, and is resisted against on the surface of described spring leaf 3, the upper end of button 5 extends in outside the described housing 1, in the time of lead need being disconnected, only need press the button 5, an end that spring leaf 3 is contacted by button 5 lower ends with lead moves down, double wedge 331 on spring leaf second shell fragment 32 and first shell fragment 31 is unclamped with lead 4, lead 4 is pulled out, therefore, used fairly simple.

The shape of described button 5 is unrestricted, it is more firm for button 5 is connected, in the present embodiment, described button 5 is a T shape member, the lower surface of described T shape member is the inclined-plane, the both sides, lower end of described T shape member are respectively equipped with a barb-like projection 52, because the lower surface of T shape member is the inclined-plane, when pressing the button, button 5 is that face contacts with face with spring leaf 3 second sides, can make spring leaf 3 and unclamp with lead 4 than being easier to, and because both sides, button 5 lower end are respectively equipped with a barb-like projection 52, be not easy in housing 1, to be come off after button 5 inserts housing 1, therefore, guaranteed button 5 role in binding post.

In sum, the utlity model has good switching performance, and have reliable, fast, anti-vibration, advantage such as non-maintaining, wiring speed is significantly improved, alleviated working strength of workers.

The present invention is not subjected to the restriction of present embodiment, and the technical scheme that any employing equivalence replacement obtains is all in the scope of protection of the invention.

Claims

1. the binding post of photovoltaic junction box wiring board special use, comprise housing (1), be arranged on electric conductor (2) and spring leaf (3) in the described housing (1), described housing (1) is provided with incoming line, described spring leaf (3) is arranged in the described housing (3), it is characterized in that, described spring leaf (3) one ends are fixed on described housing (1) inner surface, the other end is against on the side (21) of described electric conductor, and touch mutually with lead (4) elastic force that inserts housing, described spring leaf (3) comprises first shell fragment (31) with the end that lead (4) touches mutually, second shell fragment (32), described first shell fragment (31) and V-shaped connection of second shell fragment (32), described first shell fragment (31) tail end is provided with some double wedges (331).

2. the binding post of photovoltaic junction box wiring board special use according to claim 1, it is characterized in that, described housing (1) is provided with a button (5), described housing (1) is passed in described button (5) lower end, and be resisted against on the surface of described spring leaf (3), the upper end extends in outside the described housing (1).

3. as the binding post of photovoltaic junction box wiring board special use as described in the claim 2, it is characterized in that described button (5) is a T shape member, the lower surface of described T shape member is the inclined-plane, and the both sides, lower end of described T shape member are respectively equipped with a barb-like projection (52).