A bridge-type terminal contact piece module structure and a high-current terminal connection structure

Abstract

The present invention discloses a bridge-type terminal contact piece module structure and a high-current terminal connection structure, the bridge-type terminal contact piece module structure comprises a first bridge terminal group and a second bridge terminal group arranged vertically, the middle parts of the first bridge terminal group and the second bridge terminal group are fixed by riveting connection, at least one protruding first contact point is provided on the front and rear ends of the first bridge terminal group facing the second bridge terminal group, at least one second contact point corresponding to the first contact point is provided on the front and rear ends of the second bridge terminal group facing the first bridge terminal group, and a gap is provided between the first contact point and the second contact point. The present invention can flexibly change the size of the overcurrent between the terminals through the modular structural design to meet the diversified needs of the actual current, and also has the characteristics of simple structure, convenient assembly, safety and reliability, and a wide range of applications.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, and in particular to a bridge-type terminal contact piece module structure and a high-current terminal connection structure. Background Art

[0002] In the high-voltage connector and high-current terminal application market, the first category is an integrated circular terminal that uses a rotating spring or torsion spring structure as the terminal contact piece, and the second category is an integrated sheet metal terminal that uses a grid contact piece. These two types of terminals are basically customized current terminals, and the mold opening cost is high. In addition, when responding to different current requirements in the market, it is difficult to match a connector that matches the overcurrent and structure. The shell of the first type of terminal is generally machined, which is inefficient. The inner contact piece of the terminal is generally stamped with a copper alloy mold, and the mold opening cost is high. The shell of the second type of terminal is sheet metal, and the inner contact piece of the terminal is stamped with a mold. The terminal shell and the inner contact piece are generally developed one-to-one, with a long development cycle, and are not suitable for different spatial structure requirements and cannot be used flexibly. Moreover, the overcurrent of the above two types of terminals cannot be changed, and the scope of application is small. When there is a higher or lower overcurrent requirement, a new terminal needs to be redeveloped. Summary of the invention

[0003] In view of the above-mentioned existing technical defects, the present invention provides a bridge-type terminal contact piece module structure. Through the modular structural design, the overcurrent between the terminals can be flexibly changed to meet the diverse needs of actual current. It also has the characteristics of simple structure, easy assembly, safety and reliability, and a wide range of applications.

[0004] In order to solve the above technical problems, the present invention provides a bridge-type terminal contact piece module structure, including a first bridge terminal group and a second bridge terminal group arranged vertically, the middle parts of the first bridge terminal group and the second bridge terminal group are fixed by riveting, and the first bridge terminal group is provided with at least one raised first contact point on the front and rear ends facing the second bridge terminal group, and the second bridge terminal group is provided with at least one raised second contact point on the front and rear ends facing the first bridge terminal group, and a gap is provided between the first contact point and the second contact point.

[0005] Furthermore, the middle parts of the first bridging terminal group and the second bridging terminal group are riveted and fixed by riveting sheets.

[0006] Furthermore, the first bridge terminal group and the second bridge terminal group both include a first bridge terminal contact piece and a second bridge terminal contact piece, and the middle parts of the first bridge terminal contact piece and the second bridge terminal contact piece are stacked and fixed by riveting the riveting piece.

[0007] Furthermore, the first bridging terminal contact piece includes a first riveted portion in the middle, a left front bridge arranged at the left half of the front end of the first riveted portion, and a right rear bridge arranged at the right half of the rear end of the first riveted portion; the second bridging terminal contact piece includes a second riveted portion in the middle, a right front bridge arranged at the right half of the front end of the second riveted portion, and a left rear bridge arranged at the left half of the rear end of the second riveted portion; the first riveted portion and the second riveted portion are stacked and riveted and fixed by the riveting sheet, and the left front bridge and the right front bridge are arranged left and right, and the left rear bridge and the right rear bridge are arranged left and right.

[0008] Furthermore, at least one raised electrical contact point is provided at corresponding positions of the left front axle and the right front axle, and at corresponding positions of the left rear axle and the right rear axle.

[0009] Furthermore, the left front axle, the right front axle, the left rear axle and the right rear axle are all wavy in shape.

[0010] Furthermore, both sides of the first riveted portion and the second riveted portion are provided with riveting grooves engaged with the riveting sheets.

[0011] Furthermore, the shape of the riveting sheet is an I-shape, the vertical portion in the middle of the riveting sheet is clamped in the riveting groove, and the horizontal portions at the upper and lower ends of the riveting sheet are both located outside the first riveted portion or the second riveted portion.

[0012] Furthermore, concave arc grooves are provided at two inner corners of the riveting groove and four inner corners of the riveting sheet.

[0013] A high-current terminal connection structure is also provided, comprising at least one bridge-type terminal contact piece module structure as described above, and also comprising a copper bar and a wire-pressing terminal respectively inserted at the front and rear ends of the bridge-type terminal contact piece module structure, one end of the copper bar and the wire-pressing terminal are both inserted into the gap between the first contact point and the second contact point on the corresponding side, and the upper and lower surfaces of the copper bar and the wire-pressing terminal are respectively in contact with the first contact point and the second contact point.

[0014] The present invention has the following beneficial effects:

[0015] In the present invention, a first bridging terminal group and a second bridging terminal group arranged up and down and riveted together are used to form a module structure, which is used for the contact connector between the copper busbar (terminal) and the terminal. In this way, one or more module structures can be set between the copper busbar (terminal) and the terminal according to the size of the overcurrent, that is, the number of module structures can be determined according to the actual demand for overcurrent, so that the overcurrent of the contact connector between the terminals is variable, thereby realizing that the large current terminal can change the number of module structures according to the actual current needs to meet the connection needs, and achieve on-demand distribution; each module structure carries a certain overcurrent capacity, and the actual current demand is met by combining module structures of different orders of magnitude, flexibly providing the market with low-cost solutions with different overcurrent capacities, and the module structure in the present design only needs to develop the bridging terminal contact piece unit and the riveting piece unit in the early stage, and then use spring machine processing and assembly, and the mold cost is low; it also has the characteristics of simple structure, convenient assembly, safety and reliability, and a wide range of applications.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of a bridge-type terminal contact piece module structure in an embodiment;

[0019] Figure 2 is a schematic diagram of a first bridge terminal contact piece in an embodiment;

[0020] Figure 3 is a schematic diagram of a second bridge terminal contact piece in an embodiment;

[0021] Figure 4 A schematic diagram of a riveting sheet in an embodiment;

[0022] Figure 5 Schematic diagram of the high current terminal connection structure in Example 2. DETAILED DESCRIPTION

[0023] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and explained in conjunction with the accompanying drawings and specific embodiments below; it should be noted that the descriptions of "first", "second", etc. in this article are used to distinguish different components, etc., do not represent the order of precedence, nor do they limit the "first" and "second" to be different types.

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] like Figures 1 to 4 As shown, a bridge-type terminal contact piece module structure 100 shown in this embodiment comprises a first bridge terminal group 1 and a second bridge terminal group 2 arranged vertically, the middle parts of the first bridge terminal group 1 and the second bridge terminal group 2 are fixed by riveting, a raised first contact point 11 is provided on the front and rear ends of the first bridge terminal group facing the second bridge terminal group 2, and a raised second contact point 21 corresponding to the first contact point 11 is provided on the front and rear ends of the second bridge terminal group 2 facing the first bridge terminal group 1, that is, the two first contact points 11 and the two second contact points 21 are located on both sides of the riveting position, and are used to abut against the copper bus and the wire pressing terminal that need to be electrically connected at the front and rear ends thereof, respectively, and a gap 101 is provided between the first contact point 11 and the second contact point 21, and the gap is used for the insertion port of the terminal; in the above structure, the first bridge terminal group and the second bridge terminal group arranged vertically and riveted together are used to connect the first bridge terminal group 1 and the second bridge terminal group 2. The subgroups form a module structure, which is used as a contact connector between the copper busbar (terminal) and the terminal. In this way, one or more module structures can be set between the copper busbar (terminal) and the terminal according to the size of the overcurrent, that is, the number of module structures can be determined according to the actual demand for overcurrent, so that the overcurrent of the contact connector between the terminals is variable, thereby realizing that the large current terminal can change the number of module structures according to the actual current needs to meet the connection needs, and achieve on-demand distribution; each module structure carries a certain overcurrent capacity, and the actual current demand is met by combining module structures of different orders of magnitude, flexibly providing the market with low-cost solutions with different overcurrent capacities, and the module structure in this design only needs to develop a contact sheet unit in the early stage, and then it can be made by spring machining, and the mold cost is low; it uses the first contact point and the second contact point at both ends to press the inserted sheet terminals towards each other, thereby forming an effective and reliable electrical connection.

[0027] In this embodiment, the middle parts of the first bridging terminal group 1 and the second bridging terminal group 2 are riveted and fixed by the rivet sheet 3, and the first bridging terminal group 1 and the second bridging terminal group 2 are fixed by the rivet sheet, which also has the characteristics of simple structure, convenient assembly, safety and reliability.

[0028] Specifically, the first bridge terminal group 1 and the second bridge terminal group 2 both include a first bridge terminal contact piece 4 and a second bridge terminal contact piece 5, and the middle parts of the first bridge terminal contact piece 4 and the second bridge terminal contact piece 5 are stacked up and down and riveted and fixed by the riveting piece 3, that is, the middle parts of the four bridge terminal contact pieces in the first bridge terminal group 1 and the second bridge terminal group 2 are stacked up and down and tightly fixed together by the riveting of the riveting piece; raised electrical contact points are provided at the front and rear ends of the first bridge terminal contact piece 4 and the second bridge terminal contact piece 5, which are used as the first contact point or the second contact point. When the two are combined as the first bridge terminal group at the upper end, they are used as the first contact point, and when the two are combined as the second bridge terminal group at the lower end, they are used as the second contact point; the bridge terminal contact piece and the riveting piece are both formed by mold stamping, with a simple processing technology and high production efficiency.

[0029] Specifically, the first bridge terminal contact piece 4 includes a first riveted portion 41 in the middle, a left front bridge 42 provided on the left half of the front end of the first riveted portion 41, and a right rear bridge 43 provided on the right half of the rear end of the first riveted portion 41, that is, the positions of the left front bridge 42 and the right rear bridge 43 are designed to be staggered left and right; the second bridge terminal contact piece 5 includes a second riveted portion 51 in the middle, a right front bridge 52 provided on the right half of the front end of the second riveted portion 51, and a left rear bridge 53 provided on the left half of the rear end of the second riveted portion 51, that is, the positions of the right front bridge 52 and the left rear bridge 53 are also designed to be staggered left and right; because the front and rear bridges of the contact piece mentioned above are staggered, after the first riveted portion 41 and the second riveted portion 52 are stacked and connected and fixed by riveting the riveting sheet 3, the left front bridge and the right front bridge are arranged left and right, and the left rear bridge and the right rear bridge are arranged left and right. The arrangement will not affect the riveting fixation between the first bridging terminal contact piece 4 and the second bridging terminal contact piece 5; in addition, an electrical contact point used as the first contact point or the second contact point is protruded at the corresponding positions of the left front bridge and the right front bridge and the corresponding positions of the left rear bridge and the right rear bridge, that is, the two electrical contact points in the left front bridge and the right front bridge are combined as the first contact point or the second contact point, and the two electrical contact points in the left rear bridge and the right rear bridge are combined as the first contact point or the second contact point, and in actual application, the electrical contact points on the left front bridge, the right front bridge, the left rear bridge and the right rear bridge are located on the same horizontal plane, so that the double contact piece structure in the first bridging terminal group 1 and the second bridging terminal group 2 makes the upper and lower first contact points and the second contact points both double contact points, thereby improving the connection reliability of the module structure with the terminal parts in the later stage.

[0030] Specifically, the left front bridge 42, the right front bridge 52, the left rear bridge 43 and the right rear bridge 53 are all wavy in shape, so that the above four form an elastic long arm structure with good elasticity, which reduces the precision requirements for terminal insertion and reduces the insertion force of the terminals during later use, greatly reduces the insertion force of the connector terminals, and ensures close contact between the terminals, thereby improving connection reliability. It can also ensure that the left front bridge 42, the right front bridge 52, the left rear bridge 43 and the right rear bridge 53 are not easily deformed, thereby increasing the service life of the bridge terminal contact piece.

[0031] In this embodiment, symmetrically arranged riveting grooves 102 are recessed in the middle of both sides of the first riveted portion 41 and the second riveted portion 51, so that the first riveted portion 41 and the second riveted portion 51 both form an I-shaped structure, and the riveting grooves 102 in the first riveted portion 41 and the second riveted portion 51 are arranged one by one up and down, and the riveting grooves 102 on both sides are riveted and fixed to the four bridge terminal contact pieces in a single module by engaging a riveting sheet 3, that is, the middle part of the stacked four bridge terminal contact pieces is riveted and fixed by two riveting sheets arranged in front and behind.

[0032] Specifically, the shape of the riveting sheet 3 is an I-shape, and the vertical portion 31 in the middle of the riveting sheet 3 is clamped in the riveting groove 102, and the horizontal portions 32 at the upper and lower ends of the riveting sheet 3 are both located on the outside of the first riveted portion or the second riveted portion, that is, the horizontal portions 32 at the upper and lower ends are used to press the middle of the four bridging terminal contact sheets for riveting and fixing.

[0033] Specifically, concave arc grooves 103 are provided at the two inner corners of the riveting groove 102 and the four inner corners of the riveting sheet 3, which are used to reduce the strength of the first riveted part, the second riveted part and the horizontal part 32, so that the first riveted part, the second riveted part and the riveting sheet have a certain elastic deformation ability, which is convenient for assembling the riveting sheet in the riveting groove.

[0034] In other embodiments, the first bridge terminal contact piece and the second bridge terminal contact piece are both made of copper alloy by stamping.

[0035] In other embodiments, the riveting sheet is made of stainless steel by stamping.

[0036] In other embodiments, the number of electrical contact points in the left front axle, the right front axle, the left rear axle and the right rear axle can also be set to a multiple of 2, so that multiple front-to-back arranged contact points are formed between a single terminal and the left front axle, the right front axle, the left rear axle and the right rear axle, thereby increasing the contact area and connection reliability.

[0037] Example 2

[0038] like Figures 1 to 5As shown, a high-current terminal connection structure shown in this embodiment includes three bridge-type terminal contact piece module structures 100 that are closely arranged front and back and as described in Example 1, and also includes a copper bar 6 and a wire crimping terminal 7 respectively inserted at the front and rear ends of the bridge-type terminal contact piece module structure, the wire crimping terminal 7 is used to connect with an external cable 8, and one end of the copper bar 6 and the wire crimping terminal 7 are both inserted into the gap 101 between the first contact point 11 and the second contact point 21 on the corresponding side, that is, the copper bar is inserted between the first contact point 11 and the second contact point 21 at the front end of the first bridge terminal group and the second bridge terminal group, and the wire crimping terminal 7 is inserted between the first contact point 11 and the second contact point 21 at the rear end of the first bridge terminal group and the second bridge terminal group, so that an effective electrical connection is formed between the copper bar and the wire crimping terminal through the bridge-type terminal contact piece module structure 100; in actual use, the thickness of the insertion end of the copper bar 6 and the wire crimping terminal 7 is slightly greater than the width of the gap 101, so that the upper and lower surfaces of the copper bar 6 and the wire crimping terminal 7 are respectively in close contact with the first contact point 11 and the second contact point 21.

[0039] Specifically, the copper busbar 6 and the crimping terminal 7 are both in sheet shape.

[0040] In other embodiments, one, two, four or other number of bridge-type terminal contact piece module structures may be sandwiched between the copper bus 6 and the crimping terminal 7 to achieve electrical connection between the two, depending on the actual overcurrent required.

[0041] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A bridge-type terminal contact piece module structure, characterized in that: The first bridge terminal group and the second bridge terminal group are arranged vertically, the middle parts of the first bridge terminal group and the second bridge terminal group are fixed by riveting, at least one protruding first contact point is provided on the front and rear ends of the first bridge terminal group facing the second bridge terminal group, at least one second contact point corresponding to the first contact point is provided on the front and rear ends of the second bridge terminal group facing the first bridge terminal group, and a gap is provided between the first contact point and the second contact point; The middle parts of the first bridging terminal group and the second bridging terminal group are riveted and fixed by riveting sheets; The first bridging terminal group and the second bridging terminal group both include a first bridging terminal contact piece and a second bridging terminal contact piece; the first bridging terminal contact piece includes a first riveted portion in the middle, a left front bridge arranged at the left half of the front end of the first riveted portion, and a right rear bridge arranged at the right half of the rear end of the first riveted portion; the second bridging terminal contact piece includes a second riveted portion in the middle, a right front bridge arranged at the right half of the front end of the second riveted portion, and a left rear bridge arranged at the left half of the rear end of the second riveted portion; the first riveted portion and the second riveted portion are stacked and riveted and fixed by the riveting sheet, and the left front bridge and the right front bridge are arranged left and right, and the left rear bridge and the right rear bridge are arranged left and right.

2. The bridge-type terminal contact piece module structure according to claim 1, characterized in that: At least one raised electrical contact point is provided at corresponding positions of the left front axle and the right front axle, and at corresponding positions of the left rear axle and the right rear axle.

3. The bridge-type terminal contact piece module structure according to claim 2, characterized in that: The shapes of the left front bridge, the right front bridge, the left rear bridge and the right rear bridge are all wavy.

4. The bridge-type terminal contact piece module structure according to claim 3, characterized in that: Both sides of the first riveted portion and the second riveted portion are provided with riveting grooves engaged with the riveting sheets.

5. The bridge-type terminal contact piece module structure according to claim 4, characterized in that: The shape of the riveting sheet is an I-shape, the vertical portion in the middle of the riveting sheet is clamped in the riveting groove, and the horizontal portions at the upper and lower ends of the riveting sheet are both located outside the first riveted portion or the second riveted portion.

6. The bridge-type terminal contact piece module structure according to claim 5, characterized in that: Concave arc grooves are provided at the two inner corners of the riveting groove and the four inner corners of the riveting sheet.

7. A high current terminal connection structure, characterized in that: It includes at least one bridge-type terminal contact piece module structure as described in any one of claims 1 to 6, and also includes a copper bar and a wire crimping terminal respectively inserted at the front and rear ends of the bridge-type terminal contact piece module structure, one end of the copper bar and the wire crimping terminal are inserted into the gap between the first contact point and the second contact point on the corresponding side, and the upper and lower surfaces of the copper bar and the wire crimping terminal are respectively in contact with the first contact point and the second contact point.

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