CN220172565U - Contact structure of bus bar - Google Patents

Abstract

The utility model provides a contact structure of a busbar, which comprises a connector and a fixing piece. The connector comprises at least one terminal, and the fixing piece is riveted on a busbar and used for fixing the connector on the busbar. In another embodiment, the fixing member can be inserted into and fastened to the busbar, and the fixing member is integrally connected with the terminal. The contact structure of the bus bar can reduce the assembly time of the terminal and shorten the assembly time of the bus bar.

Description

Contact structure of bus bar

Technical Field

The present utility model relates to a contact structure, and more particularly, to a contact structure of a bus.

Background

In general, electric car charging stations are largely classified into direct current charging stations and alternating current charging stations, and batteries accept only storage or transmission of electric energy in the form of direct current, whether charged or discharged. Therefore, to use ac power to charge the battery, the battery must be converted to dc power by an inverter.

As the power of the dc charging station is higher and higher, and the charging can be completed quickly in a short time, the dc charging station will be a mainstream product in the future. In addition, the internal conductors of the high-power dc charging station are mostly connected by copper Bus bars, so that voltage contacts or signal detection contacts are required to be arranged on the copper Bus bars under the requirement of safe use of the power supply. However, in a general charging station, a plurality of contact terminals are locked on a bus bar by using a screw locking method, and the assembling time of the bus bar tends to be relatively increased due to the too many screws required to be locked on the contact terminals.

Disclosure of Invention

The utility model provides a contact structure of a bus bar, which is used for reducing the assembly time of a terminal and shortening the assembly working hour of the bus bar.

In order to achieve the above-mentioned object, according to one embodiment of the present utility model, a contact structure of a bus bar is provided, which includes a connector and a fixing member. The connector comprises at least one terminal, the fixing piece is riveted to a busbar, and the fixing piece is used for fixing the connector on the busbar.

According to another aspect of the present utility model, a contact structure of a bus bar is provided, which includes a connector and a fixing member. The connector comprises a terminal, the fixing piece is inserted into and fastened on a busbar, and the fixing piece is used for fixing the connector on the busbar, wherein the fixing piece is connected with the terminal into a whole.

The present utility model has the advantage that,

the contact structure of the bus bar of the embodiment comprises a connector and a fixing piece, wherein the fixing piece is riveted on the bus bar, and compared with a traditional mode of locking and attaching by using screws, the fixing piece is fixed on the bus bar by using a riveting stamping device before the bus bar leaves a factory, so that when the bus bar is assembled in a machine table, the connector is not required to be locked and attached on the bus bar by using additional screws, and the assembly working time of the bus bar can be shortened. In addition, the wiring terminal is fixed on the terminal of the busbar in a pluggable mode, so that the assembly time of the wiring terminal is reduced.

Drawings

FIGS. 1A and 1B are schematic perspective views of a contact structure of a bus bar and a schematic cross-sectional view along line A-A according to an embodiment of the utility model;

FIGS. 2A-2E illustrate various examples of the contact structure of the bus bar according to one embodiment of the utility model;

fig. 3A and 3B are schematic perspective views and schematic cross-sectional views along line C-C of a contact structure of a bus bar according to another embodiment of the utility model;

FIGS. 3C and 3D are schematic diagrams illustrating other views of the contact structure, respectively;

wherein:

100-bus bars;

101-a first surface;

102-a second surface;

103-perforating;

110-contact structure;

a 111-terminal;

112-connectors;

113-conductive sheets;

113 a-horizontal segment;

113 b-an extension;

113b 1-a first part;

113b 2-a second part;

113 c-openings;

113c1, 113c 2-openings;

114-a fixing piece;

115-a protrusion;

116-column section;

117-rivet portion;

120-signal conductors;

122-connecting terminals;

130-contact structures;

130 a-hollow structure;

130 b-slit;

131-terminals;

131 A-A first side terminal;

131 b-second side terminal;

131 c-slit;

132-connectors;

134-a fixing member;

135-a first positioning portion;

136-second positioning portion

137-a third positioning portion;

138-a fourth detent;

140-signal conductors;

142-connecting terminals;

150-sheet metal parts;

151-first side sheet metal;

152-second side sheet metal;

t-abutment;

w1-width of horizontal segment;

wb 1-width of the first portion;

wb 2-width of the second portion;

-Z, +z, -Y, +y-direction;

thickness of H-bus;

h1-height of the first surface;

d1—diameter of the perforation;

l1-length of horizontal segment;

l2-wire length;

l3-two end points are long;

l4-length of the baffle.

Detailed Description

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well as "at least one" unless the context clearly indicates otherwise. "or" means "and/or" are provided. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

Please refer to fig. 1A and 1B. Fig. 1A and 1B are schematic perspective views and a sectional view along A-A of a contact structure 110 of a bus 100 according to an embodiment of the utility model.

The contact structure 110 of the bus 100 includes a connector 112 and a fixing member 114. The connector 112 includes at least one terminal 111, a fixing member 114 is riveted to a bus bar 100, and the fixing member 114 is used for fixing the connector 112 to the bus bar 100.

In the power transmission and distribution system, the bus bar 100 refers to a conductor used in a distribution board, a distribution box, a transformer substation, a charging station, or other power supply devices, and the bus bar 100 is made of copper, aluminum, or other high-conductivity materials, for example. The bus bar 100 is mostly in the form of a sheet, and the cross-sectional area of the bus bar 100 determines the magnitude of the current that can safely pass through the bus bar 100, and a larger cross-sectional area indicates a larger safety current that can pass through. In one embodiment, the bus bar 100 has a thickness of, for example, about 3 to 10mm and a cross-sectional area of, for example, 3 х mm ² ～10х50mm ² However, the present utility model is not limited thereto. In one embodiment, the bus bars 100 and 100 may be connected to each other by a fastener (e.g., a screw and nut combination), and the bus bars 100 may also be fixed in a machine of the power system by a fastener (e.g., a screw and nut combination) to form a complete power transmission network.

The contact structure 110 is a voltage contact or a signal detection contact disposed on the bus 100, and is used for detecting a voltage, a current, a resistance, a reactance or a temperature value of a certain signal point on the bus 100. In addition, if two or more contact structures 110 are disposed on the bus 100, the voltage difference, the temperature difference, or the power loss between two or more signal points on the bus 100 can be detected.

Referring to fig. 1A, the connector 112 is, for example, a conductive sheet 113 (e.g., a copper sheet or an aluminum sheet) having at least one terminal 111, and the at least one terminal 111 may be a male connector. Taking the male connector as an example, the terminal 111 of the male connector is inserted into a connecting terminal 122 (e.g. female connector) with an insulator coating, so as to electrically connect the male connector and the female connector. The female connector is, for example, a connection terminal 122 connected to a signal wire 120, and is fixed on the terminal 111 of the bus bar, for example, a male connector in a pluggable manner, so as to achieve the effect of plug and play.

However, the terminal 111 may be a female connector (not shown). Taking a female connector as an example, the terminals of the female connector are used for inserting a male connector (not shown) with an insulator coating therein. The male connector is, for example, a connection terminal connected to a signal wire 120, and is removably fixed to the bus terminal, for example, a female connector.

Referring to fig. 1A and 1B, the fixing member 114 is riveted to the bus bar 100, and compared with the conventional method of locking by using screws, the fixing member 114 is fixed to the bus bar 100 by a riveting and punching device (not shown) before the bus bar 100 leaves the factory, so that when the bus bar 100 is assembled in a machine, no additional screws are required to lock the connector 112 to the bus bar 100, and the assembly time of the terminal 111 can be shortened.

Referring to fig. 1B, the fixing member 114 includes a column portion 116, and the column portion 116 passes through the connector 112 and the bus bar 100. In addition, the fixing member 114 includes a protruding portion 115, the protruding portion 115 is located at one end of the pillar portion 116, and the protruding portion 115 is overlapped with the connector 112 in the Z direction to position the connector 112 on a first surface 101 of the bus bar 100. In addition, the fixing member 114 includes a riveting portion 117, the riveting portion 117 is located at the other end of the pillar portion 116, and the riveting portion 117 is riveted to a second surface 102 of the busbar 100 and overlaps the second surface 102, where the second surface 102 is opposite to the first surface 101.

In one embodiment, the pillar portion 116 is, for example, a hollow cylinder, and the protruding portion 115 and the riveting portion 117 are integrally formed on two opposite sides of the pillar portion 116 to form an I-shaped structure.

In one embodiment, the bus bar 100 is preformed with a through hole 103, for example, and the conductive sheet 113 as the connector 112 is preformed with an opening 113c, for example. Next, the connector 112 is disposed on the bus bar 100 such that the opening 113c of the connector 112 is aligned with the through hole 103 of the bus bar 100. Then, the fixing member 114 is inserted into the opening 113c of the connector 112 and the through hole 103 of the bus bar 100, and then two ends (e.g. top and bottom ends) of the fixing member 114 are pressed by a riveting and punching device (not shown), so that one end of the fixing member 114 is deformed to form a protrusion 115 (see fig. 1B) and is riveted on the bus bar 100. That is, the fixing member 114 and the bus bar 100 may be integrally connected by riveting or other similar processes, and the riveting force thereof is equivalent to the conventional screw-locking engagement force, thereby increasing the strength of the contact structure 110. Wherein the diameters of the protruding portion 115 and the rivet portion 117 are larger than the diameters of the opening 113c and the through hole 103, and the diameter of the pillar portion 116 is smaller than the diameters of the opening 113c and the through hole 103. The length L1 and the width W1 of the horizontal segment 113a are slightly larger than the outer diameter of the protruding portion 115, so as to avoid the interference between the protruding portion 115 and the extending segment 113b of the connector 112 to affect assembly.

In addition, the conventional screw-locked terminal is, for example, a terminal with a circular opening, and only a single signal contact is fixed by a screw, so that the quick plugging and unplugging cannot be performed. The terminal 111 in the present embodiment may have one or more signal contacts, and the opposite terminals 122 are removably fixed to the terminal 111 of the bus bar 100, so that the assembly of the terminals 122 is more efficient.

Referring to fig. 2A to 2E, a plurality of variations of the contact structure 110 of the bus 100 according to an embodiment of the utility model are shown. In fig. 2A, the conductive sheet 113 as the connector 112 has a horizontal section 113a and an extension section 113b, wherein the horizontal section 113a is disposed on the first surface 101 of the bus bar 100, and the extension section 113b is perpendicular to the horizontal section 113a and extends in a first direction (+z direction), for example, perpendicular to the first surface 101 (i.e., the X-Y plane) of the bus bar 100. The extension 113b has a width smaller than the width of the horizontal section 113a, and the extension 113b may serve as a terminal 111 (e.g., a male connector) of the connector 112. In fig. 2A, opposing terminals 122 (e.g., female connector, see fig. 1A) may be inserted onto terminals 111 of bus bar 100 in the-Z direction from above extension 113b to complete the connection. In fig. 2A, the extension portion 113b further includes a first portion 113b1 and a second portion 113b2 (i.e. the terminal 111), wherein the second portion 113b2 is connected to the horizontal portion 113a through the first portion 113b1, and a width Wb1 of the first portion 113b1 is between a width W1 of the horizontal portion 113a and a width Wb2 of the second portion 113b 2.

In fig. 2B, the conductive sheet 113 as the connector 112 has a horizontal section 113a and a plurality of extension sections 113B, each extension section 113B is connected to the horizontal section 113a, and each extension section 113B extends in a first direction (+z direction) that is, for example, perpendicular to the first surface 101 (i.e., X-Y plane) of the bus bar 100. The width of each extension 113b is smaller than the width of the horizontal segment 113a, and each extension 113b may serve as a terminal 111 (e.g., a male connector) of the connector 112. Therefore, the connector 112 of the present embodiment has at least three terminals 111, which can be used as a three-fork contact for detecting a signal point on the bus 100. Referring to FIG. 2C, a cross-sectional view of the contact structure 110 of FIG. 2B along line B-B is shown. The horizontal segment 113a has a plurality of openings 113c1 and 113c2, and the connecting length L2 of the centers of the openings 113c1 and 113c2 is larger than the diameter of the protruding portion 115, so as to avoid interference of the two fixing members 114 during assembly.

In fig. 2D, the conductive sheet 113 as the connector 112 has a horizontal segment 113a and an extension segment 113b, wherein the horizontal segment 113a is connected to the extension segment 113b, the horizontal segment 113a is disposed on the first surface 101 of the bus bar 100, and the extension segment 113b is perpendicular to the horizontal segment 113a and faces a second direction (+y direction), which is perpendicular to the X direction and the normal direction (i.e., the X-Z plane) of the first surface 101 of the bus bar 100. The extension 113b has a width smaller than the width of the horizontal section 113a, and the extension 113b may serve as a terminal 111 (e.g., a male connector) of the connector 112. Fig. 2A differs from fig. 2D in that: the extending directions of the extending sections 113b are different, one facing the +z direction and the other facing the +y direction (or the X direction). Thus, in fig. 2D, opposing terminals (e.g., female connectors) may be inserted onto terminals 111 of bus bar 100 in the-Y direction to complete the connection.

In fig. 2E, the conductive sheet 113 as the connector 112 has a horizontal section 113a and a plurality of extending sections 113b, the extending sections 113b are connected to the horizontal section 113a, and each extending section 113b is perpendicular to the X-direction and the normal direction (i.e., the X-Z plane) of the first surface 101 of the busbar 100. The width of each extension 113b is smaller than the width of the horizontal segment 113a, and each extension 113b may serve as a terminal 111 (e.g., a male connector) of the connector 112. Therefore, the connector 112 of the present embodiment has at least two terminals 111, which can be used as a binary contact for detecting a signal point on the bus 100.

In the above embodiment, the extension portion 113b may extend toward the +z direction or the +y direction. However, in another embodiment, the extension portion 113b may also extend toward the +x direction or other predetermined direction, and thus the present utility model is not limited thereto. In addition, in fig. 2B and 2E, when the connector 112 has at least two terminals 111, the extending directions of the terminals 111 may be the same or different, for example, one terminal faces the +z direction, the other two terminals face the +y direction, or one terminal faces the +z direction, and the other two terminals face the +y direction, respectively, so the utility model is not limited thereto.

Please refer to fig. 3A and 3B. Fig. 3A and 3B are schematic perspective views and schematic cross-sectional views along line C-C of a contact structure 130 of a bus 100 according to another embodiment of the utility model.

The contact structure 130 of the bus 100 includes a connector 132 and a fixture 134. The connector 132 includes a terminal 131, and the fixing member 134 is inserted into and fastened to a busbar 100, where the fixing member 134 is used to fix the connector 132 to the busbar 100, and the fixing member 134 is integrally connected to the terminal 131.

Referring to fig. 3A, the connector 132 is, for example, a hollow conductive pillar (such as a copper pillar or an aluminum pillar), a latch or other similar structures, and the terminal 131 may be a male connector. For example, the male connector terminal 131 is inserted into a terminal 142 (e.g., female connector) having an insulator coating, so that the male connector is electrically connected with the female connector. The female connector is, for example, a connection terminal 142 of a signal wire 140, and is removably fixed on the terminal 131, for example, a male connector, so as to reduce the assembly time of the connection terminal 142. However, the terminal 131 may also be a female connector (not shown) for the male connector to be removably fixed to the terminal, such as the female connector.

Referring to fig. 3B, the fixing member 134 is fastened in the bus bar 100, for example, by pressing, and compared with the conventional method of locking by using screws, the connector 132 and the fixing member 134 are assembled on the bus bar 100 before the bus bar 100 leaves the factory or assembled on the bus bar 100 in the field, so that when the bus bar 100 is assembled in a machine, the connector 132 is not required to be locked on the bus bar 100 by using additional screws, thereby shortening the assembly time of the bus bar 100.

Referring to fig. 3A and 3B, the fixing member 134 includes a first positioning portion 135 and a second positioning portion 136. The first positioning portion 135 and the second positioning portion 136 are respectively connected to the bottom surface of the terminal 131, and extend downward from the bottom surface of the terminal 131 to a through hole 103 of the busbar 100. The first positioning portion 135 and the second positioning portion 136 abut against the hole wall of the bus bar 100, so that the terminal 131 of the connector 132 is fixed on the bus bar 100.

In an embodiment, the first positioning portion 135 and the second positioning portion 136 are formed by two bending sheets, for example, the two bending sheets extend downward to a length greater than the thickness H of the bus bar 100, and a hollow structure 130a is disposed between the two bending sheets, and when the first positioning portion 135 and the second positioning portion 136 are pressed to be inserted into the through hole 103 of the bus bar 100, the volume of the hollow structure 130a is reduced, so that the first positioning portion 135 and the second positioning portion 136 are retracted inwards to be fastened to the bus bar 100. The maximum diameter of the bent first positioning portion 135 and the second positioning portion 136 is slightly larger than the through hole 103, so that the first positioning portion 135 and the second positioning portion 136 tightly abut against (form an abutting point T or an abutting surface) the hole wall of the bus bar 100, and the height from the abutting point T to the first surface 101 is H1.

In addition, a slit 130B is formed between the points of the two bending sheets, so that the points of the two bending sheets have a space for shrinkage deformation (see fig. 3B and 3D). The slit 130b communicates with the hollow structure 130 a.

In addition, referring to fig. 3A and 3B, the fixing member 134 includes a third positioning portion 137 and a fourth positioning portion 138. The third positioning portion 137 and the fourth positioning portion 138 are respectively connected to opposite sides of the terminal 131, and extend outwardly parallel to the bottom surface of the terminal 131. The third positioning portion 137 and the fourth positioning portion 138 bear against a peripheral surface (i.e., the first surface 101) of the through hole 103 of the bus bar 100, so that the terminal 131 of the connector 132 is fixed to the bus bar 100. Thus, opposing contact terminals (e.g., female contacts) may be inserted into the contact structures 130 on the bus 100 in the-Z direction to complete the connection. The length L3 of the two ends of the third positioning portion 137 and the fourth positioning portion 138 needs to be greater than the diameter D1 of the through hole 103.

In one embodiment, the third positioning portion 137 and the fourth positioning portion 138 are formed by two blocking pieces, and the two blocking pieces extend outwards by a length of, for example, 1/4 to 1/2 of the thickness H of the bus bar 100, and the thickness H of the bus bar 100 is, for example, about 3 to 10 mm. In addition, the number of the blocking sheets is not limited to two, in another embodiment, the number of the blocking sheets is three or four, for example, and the extending direction of the blocking sheets can be in the + -Y direction besides the + -X direction, so as to increase the stability. The length L4 of the baffle needs to be smaller than the height H1 (fig. 3B).

In an embodiment, the third positioning portion 137 is formed by bending a portion of the first positioning portion 135 upward, and the fourth positioning portion 138 is formed by bending a portion of the second positioning portion 136 upward. However, the third positioning portion 137 is not limited to be formed by bending a portion of the first positioning portion 135 upward, and the fourth positioning portion 138 is not limited to be formed by bending a portion of the second positioning portion 136 upward, and the third positioning portion 137 and the fourth positioning portion 138 may be formed by bending other portions of the fixing member 134 upward.

Referring to fig. 3B to 3D, fig. 3C and 3D are schematic views of the contact structure 110 from other views, respectively. In one embodiment, the fixing member 134 and the connector 132 are made of a sheet metal member 150, for example. The sheet metal member 150 may be formed into the fixing member 134 and the connector 132 by stamping and/or bending. As described above, the fixing piece 134 includes the first positioning portion 135 and the third positioning portion 137 at the first side, and the fixing piece 134 includes the second positioning portion 136 and the fourth positioning portion 138 at the second side. In addition, the terminal 131 of the connector 132 includes a first side terminal 131a and a second side terminal 131b, the first side terminal 131a and the second side terminal 131b are connected to form a hollow conductive column, and a slit 131c is formed between the first side terminal 131a and the second side terminal 131 b.

In an embodiment, the sheet metal part 150 includes a first side sheet metal plate 151 and a second side sheet metal plate 152, where the first side sheet metal plate 151 and the second side sheet metal plate 152 are bent to form a cylinder, the first side sheet metal plate 151 may be used to form the first positioning portion 135 and the third positioning portion 137 of the fixing part 134 and a portion (the first side terminal 131 a) of the terminal 131 of the connector 132, and the second side sheet metal plate 152 may be used to form the second positioning portion 136 and the fourth positioning portion 138 of the fixing part 134 and another portion (the second side terminal 131 b) of the terminal 131 of the connector 132.

Therefore, the contact structure 130 of the bus bar 100 of the present embodiment can be formed of a single element, and is fixed on the bus bar 100 by extrusion deformation, so that the connector 132 is not required to be locked on the bus bar 100 by an additional screw compared with the conventional screw locking method, and the assembly time of the bus bar 100 can be shortened. In addition, the connection terminal 142 is fixed on the terminal 131 of the bus bar 100 in a pluggable manner, so as to achieve the effect of reducing the assembly time of the connection terminal.

The contact structure of the bus bar of the embodiment of the utility model can be used as a voltage contact or a signal contact for detecting a certain signal point on the bus bar and can be quickly assembled on the bus bar. In addition, the terminal in the embodiment can be provided with one or more signal contacts, and the opposite wiring terminals are fixed on the terminals of the bus bar in a pluggable manner, so that the assembly of the wiring terminals is more efficient.

In summary, although the present utility model has been described in terms of the above embodiments, it is not limited thereto. Those skilled in the art to which the utility model pertains will appreciate that numerous modifications and variations can be made without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model is defined by the appended claims.

Claims (6)

1. A contact structure of a bus bar, comprising:

a connector including at least one terminal; and

the fixing piece is riveted to a busbar and used for fixing the connector on the busbar;

the connector is a conductive sheet, the at least one terminal is a male connector or a female connector, and the at least one terminal is suitable for being electrically connected with a pluggable wiring terminal.

2. The bus bar contact structure of claim 1, wherein the fixing member comprises a post portion passing through the connector and the bus bar.

3. The bus bar contact structure of claim 2, wherein the fixing member includes a protrusion at one end of the post, the protrusion overlapping the connector to position the connector on a first surface of the bus bar.

4. The bus bar contact structure of claim 3, wherein the fixing member comprises a riveting portion, the riveting portion is located at the other end of the column portion, the riveting portion is riveted to a second surface of the bus bar and overlaps the second surface, and the second surface is opposite to the first surface.

5. The bus bar contact structure of claim 1, wherein the connector is a conductive sheet, the conductive sheet has a horizontal section and at least one extension section, the extension section is connected to the horizontal section, the horizontal section is disposed on a first surface of the bus bar, and the extension section extends perpendicular to the horizontal section and toward a first direction, and the extension section serves as the at least one terminal of the connector.

6. The bus bar junction structure of claim 5 wherein said extension segment further comprises a first portion and a second portion, wherein said second portion is connected to said horizontal segment by said first portion and wherein a width of said first portion is between a width of said horizontal segment and a width of said second portion.