Contact finger structure of connector
By introducing sliding fit and limiting buffer design of guide elements and contacts in the connector contact structure, the problems of small contact area and insufficient clamping force are solved, achieving stable transmission of large current and anti-loosening effect of contacts.
Patent Information
- Application Number
- CN202423055911.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing connectors have small contact areas at the contact points of the contacts, insufficient clamping force, and the elastic sheet is prone to loosening after prolonged use, making it impossible to effectively carry large currents.
A connector contact structure was designed, which adopts a sliding fit between the guide and the contact in the mounting groove. The two ends of the contact slide horizontally along the guide. The clamping force is moderate through the limiting component and the buffer structure, which increases the contact area and prevents loosening.
This increases the contact area, stabilizes the clamping force, allows for the flow of larger currents, prevents contact loosening, and improves the connector's lifespan and current transmission capacity.
Smart Images
Figure CN223665686U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to connector technical field, mainly relates to a connector contact finger structure. BACKGROUND
[0002] With the rapid development of modern industry and science and technology, electrical connection technology is also constantly progressing, and high-frequency switching power supply, electric vehicle, renewable energy system and other applications put forward higher requirements to circuit connection technology. The opposite contact parts of the elastic sheet of the existing connector contact finger are not prominent enough, the contact area between the elastic sheet contact part and the plug-in part is small, the elastic sheet two ends and the guide piece two ends are connected by cross connection, the compression or tightening degree of the elastic piece two ends cannot be grasped, the rebound force cannot be completely applied, and the contact parts of a pair of elastic sheets will be loose after long-term use. UTILITY MODEL CONTENTS
[0003] In view of the defects of the prior art, the utility model provides a connector contact finger structure, which solves the technical problems that the clamping force of a plurality of pairs of contact pieces is moderate, the compression contact area is large, and a large current can flow.
[0004] The technical problems solved by the utility model can be solved by the following technical solutions:
[0005] A connector contact finger structure, comprising a mounting body and a plug-in slot, wherein one end of the mounting body is provided with a plug-in slot in the middle along the length direction, characterized in that the contact finger structure further comprises a pair of mounting slots, a plurality of pairs of contact pieces and a plurality of pairs of guide pieces, and the inner wall top surface and the inner wall bottom surface of the plug-in slot are symmetrically provided with a pair of mounting slots;
[0006] The guide piece and the contact piece are sequentially installed in the mounting slot from the groove bottom to the groove top, the two ends of the contact piece can slide horizontally along the two ends of the guide piece, and the maximum distance of the two ends of the contact piece after sliding is the groove width of the mounting slot; the external connecting plug is inserted into the plug-in slot of the mounting body, and the upper surface and the lower surface of the connecting plug are in contact with the opposite surfaces of a plurality of pairs of the contact pieces respectively.
[0007] In one preferred embodiment of the utility model, the contact piece comprises a spring sheet and a pair of sliding sleeves, the pair of sliding sleeves are fixedly arranged at the two ends of the spring sheet in the length direction, and the pair of sliding sleeves slide horizontally at the two ends of the guide piece; the opposite ends of the pair of spring sheets are provided with contact protrusions, and the shape of each spring sheet is in the form of a bottomless ladder.
[0008] In an optimal embodiment of the utility model, the guide piece is a guide sheet, and the two ends of the guide sheet are respectively provided with L-shaped clamping grooves; a pair of T-shaped sliding grooves with T-shaped cross sections are horizontally arranged in the middle part of the sliding sleeve respectively, the two ends of the guide sheet are respectively inserted into the T-shaped sliding grooves of the sliding sleeve, and the width direction groove surface of the L-shaped clamping groove of the guide sheet abuts against the inner end surface of the sliding sleeve.
[0009] In an optimal embodiment of the utility model, a pair of buffer protrusions are arranged on one side of the middle part of the guide sheet towards the spring sheet.
[0010] In an optimal embodiment of the utility model, the longitudinal section of the mounting groove is T-shaped, and the length direction two ends of the plurality of pairs of sliding sleeves and guide sheets are respectively clamped and arranged at the T-shaped horizontal direction two ends of the pair of mounting grooves.
[0011] In an optimal embodiment of the utility model, limit pieces are arranged at the four corners in the mounting groove respectively, and the outer ring surface outside of the sliding sleeve is respectively abutted by the limit pieces.
[0012] In an optimal embodiment of the utility model, the limit piece comprises four limit screw holes and four limit studs, the four limit screw holes are respectively arranged at the four corners of the mounting groove of the pair of mounting bodies, the four limit studs are respectively screw-connected in the four limit screw holes, and the protruding part outer ring surface of the four limit studs abuts against the outer ring surfaces of the two pairs of sliding sleeves.
[0013] In an optimal embodiment of the utility model, the length direction other end of the mounting body is provided with an L-shaped connecting part, a pair of connecting screw holes are arranged in the L-shaped connecting part in the longitudinal direction, and the mounting body is connected on the bottom plate or top plate of the connector by screwing a connecting bolt into the pair of connecting screw holes.
[0014] Compared with the prior art, the utility model has the advantages that: the connector contact finger structure is characterized in that the two ends of the contact piece of the connector slide horizontally along the two ends of the guide piece to widen or narrow, the distance between the middle parts of the plurality of pairs of contact pieces is widened or narrowed, the external connecting plug is inserted into the plug-in groove, and the plurality of pairs of contact pieces clamp the connecting plug; the side wall of the mounting groove blocks the maximum sliding stroke of the two ends of the contact piece, prevents the distance between the plurality of pairs of contact pieces from being too large to cause loosening, ensures the compression degree, the contact area is large, and a large current can flow. BRIEF DESCRIPTION OF DRAWINGS
[0015] Fig. 1 is a structural schematic view of the connector contact finger structure of the utility model.
[0016] Fig. 2 is an exploded structure view of the contact piece and the guide piece of the utility model.
[0017] Fig. 3 Figure 1 is a structural schematic diagram of the spring sheet and the guide sheet of the utility model.
[0018] Reference signs:
[0019] 10 mounting body, 11 insertion slot, 12 mounting slot; 13 L-shaped connecting part, 14 connecting screw hole. Limiting member: 41 limiting screw hole, 42 limiting stud.
[0020] Contact member: 21 spring sheet, 22 contact protrusion; 23 sliding sleeve, 24 T-shaped sliding groove. Guide member: 31 guide sheet, 32 L-shaped clamping groove; 33 buffer protrusion. DETAILED DESCRIPTION
[0021] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific drawings.
[0022] Referring to Figs. 1-3 , the figure shows a connector contact finger structure, which comprises a mounting body 10, an insertion slot 11, a pair of mounting slots 12, a plurality of pairs of contact members, a plurality of pairs of guide members, the middle part of one end of the mounting body 10 is provided with the insertion slot 11 along the length direction, the inner wall top surface and the inner wall bottom surface of the insertion slot 11 are symmetrically provided with the pair of mounting slots 12; the guide members and the contact members are sequentially mounted in the mounting slots 12 from the groove bottom to the groove top, the two ends of the contact members can slide horizontally along the two ends of the guide members, and the maximum distance of the two ends of the contact members after sliding is the slot width of the mounting slot 12; the external connecting plug is inserted into the insertion slot 11 of the mounting body 10, and the upper surface and the lower surface of the connecting plug are in contact with the opposite surfaces of the plurality of pairs of contact members respectively.
[0023] The two ends of the contact member of the utility model connector slide horizontally along the two ends of the guide member to widen or narrow, and at the same time, the distance between the opposite surfaces of the middle part of the plurality of pairs of contact members is widened or narrowed, so that the external connecting plug is inserted into the insertion slot 11 and the plurality of pairs of contact members clamp the connecting plug; the side wall of the mounting slot 12 blocks the maximum sliding stroke of the two ends of the contact member, prevents the distance between the plurality of pairs of contact members from being too large and causing loosening, and ensures the compression degree; the clamping force of the plurality of pairs of contact members is moderate and can be self-adaptively adjusted; the compression contact area is relatively large, and a relatively large current can flow.
[0024] In the preferred embodiment, in combination with Figs. 2-3 , the contact member comprises a spring sheet 21 and a pair of sliding sleeves 23, the pair of sliding sleeves 23 are fixedly arranged at the two ends of the spring sheet 21 in the length direction, and the pair of sliding sleeves 23 slide horizontally at the two ends of the guide member; the opposite ends of the pair of spring sheets 21 are provided with contact protrusions 22, and the shape of each spring sheet 21 is in the form of a bottomless ladder.
[0025] In the preferred embodiment, the guide piece is a guide sheet 31, and the two ends of the guide sheet 31 are respectively provided with L-shaped clamping grooves 32; a pair of sliding sleeves 23 are respectively provided with T-shaped sliding grooves 24 in a horizontal manner, and the two ends of the guide sheet 31 are respectively inserted into the T-shaped sliding grooves 24 of the sliding sleeves 23, and the width direction groove surface of the L-shaped clamping grooves 32 of the guide sheet 31 abuts against the inner end surface of the sliding sleeve 23.
[0026] Further, a pair of buffer protrusions 33 are arranged on one side of the middle part of the guide sheet 31 towards the spring sheet 21.
[0027] The two ends of the spring sheet 21 are respectively provided with a pair of sliding sleeves 23, the sliding sleeves 23 are in the shape of a flat cylinder, the two ends of the guide sheet 31 are in the shape of a long strip arranged in a horizontal manner, so as to ensure the horizontal sliding and guiding of the two, and prevent slight deviation between the adjacent contact pieces after long-term use; the spring sheet 21 is in the shape of a bottomless ladder, that is, the contact protrusion 22 of the middle part of the spring sheet 21 is substantially a plane, and the contact is face contact. The inside of the sliding sleeve 23 is provided with a T-shaped sliding groove 24, that is, the sliding groove is in communication with the outside, and the spring sheet 21 has a pressure buffer space when compressed or tightened, so as to prevent damage caused by being too tight; the guide sheet 31 is provided with a pair of buffer protrusions 33, and the buffer protrusions 33 can prevent the force acting on the guide sheet 31 from being too concentrated when the spring sheet 21 is tightened. After the elastic piece is pressed downward through the horizontal guiding of the guide piece, the elastic recovery of the elastic piece can be guided to press and contact the middle part upward.
[0028] In the preferred embodiment, referring to Fig. 1 , the longitudinal section of the mounting groove 12 is in the shape of a T letter, and the length direction two ends of the plurality of pairs of sliding sleeves 23 and guide sheets 31 are respectively clamped and arranged at the horizontal direction two ends of the T-shaped mounting groove 12.
[0029] The mounting groove 12 is arranged in the shape of a T letter, and provides the spring sheet 21, the sliding sleeve 23 and the guide sheet 31 with clamping grooves for installation, and the installation of the limiting piece is also relatively stable.
[0030] In the preferred embodiment, referring to Fig. 2 , the four corners in the mounting groove 12 are respectively provided with limiting pieces, and the limiting pieces respectively abut against the outer ring surface outside of the sliding sleeve 23.
[0031] Further, the limiting piece includes four limiting screw holes 41 and four limiting screw columns 42, the four limiting screw holes 41 are respectively arranged at the four corners of the mounting groove 12 of the mounting main body 10, the four limiting screw columns 42 are respectively screw-connected into the four limiting screw holes 41, and the outer ring surface of the protruding part of the four limiting screw columns 42 abuts against the outer ring surface of the two pairs of sliding sleeves 23.
[0032] The limiting stud 42 of the above limiting part is connected through threads, is stable and does not loosen; the limiting stud 42 prevents the displacement of the several pairs of contact members and guide members due to too many times of use, limits the displacement, and ensures the connection and guidance between the two.
[0033] In the preferred embodiment, the other end of the length direction of the mounting body 10 is provided with an L-shaped connecting part 13, a pair of connecting screw holes 14 are longitudinally arranged on the L-shaped connecting part 13, and the mounting body 10 is connected to the bottom plate or the top plate of the connector by rotating a pair of connecting bolts into the pair of connecting screw holes 14.
[0034] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model. The scope of protection of the utility model is defined by the appended claims and equivalents thereof.
Claims
1. A connector contact finger structure comprising a mounting body, an insertion slot, the mounting body having an insertion slot provided in a middle portion of one end thereof in a lengthwise direction, characterized by, The contact finger structure further comprises a pair of installation grooves, a plurality of pairs of contact pieces, and a plurality of pairs of guide pieces; the inner wall top surface and the inner wall bottom surface of the insertion groove are symmetrically provided with a pair of installation grooves; The guide pieces and the contact pieces are sequentially installed in the installation grooves from the groove bottom to the groove top; the two ends of the contact piece can slide horizontally along the two ends of the guide piece; the maximum distance of the two ends of the contact piece after sliding is the groove width of the installation groove; the external connecting plug is inserted into the insertion groove of the installation main body, and the upper surface and the lower surface of the connecting plug are in contact with the opposite surfaces of the plurality of pairs of contact pieces, respectively.
2. A connector contact finger structure as claimed in claim 1, wherein, The contact piece comprises a spring sheet and a pair of sliding sleeves; the two ends of the pair of sliding sleeves are fixedly arranged in the length direction of the spring sheet; the pair of sliding sleeves slide horizontally at the two ends of the guide piece; the opposite ends of the pair of spring sheets are provided with contact protrusions; and the shape of each spring sheet is in the form of a bottomless ladder.
3. A connector contact finger structure as claimed in claim 2, wherein, The guide piece is a guide sheet; one side of the two ends of the guide sheet is respectively provided with an L-shaped clamping groove; the middle part of the pair of sliding sleeves is respectively provided with a T-shaped sliding groove in the form of T-shaped cross section; the two ends of the guide sheet are respectively inserted into the T-shaped sliding groove of the sliding sleeve; and the width direction groove surface of the L-shaped clamping groove of the guide sheet abuts against the inner end surface of the sliding sleeve.
4. A connector contact finger structure as claimed in claim 3, wherein The middle part of the guide sheet is provided with a pair of buffer protrusions towards one side of the spring sheet.
5. A connector contact finger structure as claimed in claim 4, wherein, The longitudinal section of the installation groove is in the form of T-shaped; the length direction two ends of the plurality of pairs of sliding sleeves and guide pieces are respectively clamped and arranged at the horizontal direction two ends of the T-shaped installation groove.
6. A connector contact finger structure as claimed in claim 5, wherein, The four corners in the installation groove are respectively provided with limiting pieces; the limiting pieces respectively abut against the outer ring surface outside of the sliding sleeve.
7. A connector contact finger structure as claimed in claim 6, wherein The limiting piece comprises four limiting screw holes and four limiting screw columns; the four limiting screw holes are respectively arranged at the four corners of the installation groove of the installation main body; the four limiting screw columns are respectively screwed into the four limiting screw holes; and the protruding part outer ring surface of the four limiting screw columns abuts against the outer ring surface of the two pairs of sliding sleeves.
8. The connector contact finger structure of claim 1 wherein, The length direction other end of the installation main body is provided with an L-shaped connecting part; a pair of connecting screw holes are longitudinally arranged in the L-shaped connecting part; and the installation main body is connected to the bottom plate or the top plate of the connector through the connecting bolt screwed into the pair of connecting screw holes.