Power line end connector for servo motor

Abstract

The power line end connector comprises a shell, a terminal seat, a power terminal and a signal terminal, the shell comprises a shell main body and a wiring part connected with the shell main body, an accommodating cavity with a forward opening is formed in the shell main body, and a mounting hole is formed in the wiring part; the terminal seat is inserted into the accommodating cavity, and a power terminal groove and a signal terminal groove which are through front and back are formed in the terminal seat; the power terminal comprises a first main body part, the first main body part comprises two first side plates which are oppositely arranged, one of the first side plates extends backwards to form a connecting plate, the bottom edge of the connecting plate is higher than the bottom edge of the first side plate, and the rear end of the connecting plate extends backwards out of the power terminal groove and is downwards connected with a first wire clamping part; the first wire clamping part comprises a supporting part used for placing a power wire, the supporting part and the connecting plate form an L-shaped structure, and power wire riveting pieces extend out of the two sides of the supporting part respectively. According to the utility model, the assembly space of the servo motor can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a power line end connector for a servo motor. Background Art

[0002] At present, the power line connector for servo motors generally includes a housing, a terminal block arranged in the housing, and power terminals and signal terminals inserted in the terminal block. The power terminal is larger in size than the signal terminal. There are generally two conventional structures. One is that the wiring part at the rear end of the power terminal extends forward and backward as a whole, and the other is that the wiring part at the rear end of the power terminal is vertically connected to the rear end of the bottom plate of the power terminal as a whole. The former method will result in a longer overall size of the connector, and the latter method will result in a larger overall height of the connector. No matter which method is used, it is not conducive to saving assembly space for servo motors. Utility Model Content

[0003] The utility model aims to provide a power line end connector for a servo motor, which can save the assembly space of the servo motor.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a power line end connector for a servo motor, comprising: a shell, a terminal seat, a power terminal and a signal terminal, the shell comprising a shell body and a wiring portion connected to the shell body, the shell body is formed with a forward-opening accommodating cavity, and the wiring portion is formed with a mounting hole connecting the accommodating cavity and the outside; the terminal seat is inserted into the accommodating cavity of the shell, and the terminal seat is provided with a power terminal groove and a signal terminal groove that penetrate through the front and back; the power terminal is arranged in the power terminal groove, and the signal terminal is arranged in the signal terminal groove; the power terminal comprises a first main body, the first main body comprises two first side plates arranged oppositely, one of the first side plates extends a connecting plate backward, the bottom edge of the connecting plate is higher than the bottom edge of the first side plate, the rear end of the connecting plate extends backward beyond the power terminal groove and is downwardly connected to a first clamping portion, the first clamping portion comprises a supporting portion for placing the power line, the supporting portion and the connecting plate form an L-shaped structure, and power line rivet sheets extend from both sides of the supporting portion respectively.

[0005] Optionally, the power line rivet plates include a pair of core line rivet plates and a pair of outer layer rivet plates, and the outer layer rivet plates are located below the core line rivet plates.

[0006] Optionally, a row of partitions extends backward from the rear end of the terminal seat, and the first wire clamping portion of the power terminal is located between adjacent partitions.

[0007] Optionally, a pair of elastic clamping arms extend forward from the two first side plates, and the free ends of the two elastic clamping arms arch inwardly toward each other to form a pair of clamping portions.

[0008] Optionally, the first main body is in a rectangular frame shape and further includes a first top plate and a first bottom plate.

[0009] Optionally, the first top plate is provided with a buckle protruding upward, the top wall of the power terminal slot is recessed upward to form a buckle slot, and the rear end face of the terminal seat is formed with a guide groove connected to the rear end top of the power terminal slot; when the power terminal is inserted into the power terminal slot, the buckle is inserted into the guide groove and then squeezed downward by the top wall of the power terminal slot, and when the power terminal is inserted into place, the buckle pops up and is locked in the buckle slot.

[0010] Optionally, the signal terminal includes a second main body portion in the shape of a rectangular frame, the second main body portion includes two second side plates, a second top plate and a second bottom plate, two oppositely arranged elastic clamping arms extend forward from the middle of the second top plate and the second bottom plate, the free ends of the two elastic clamping arms arch inwardly toward each other to form a pair of clamping portions, and the two second side plates extend forward a pair of connecting arms, and the front ends of the two connecting arms are connected to a rectangular frame-shaped plug-in port.

[0011] Optionally, the opposite side walls of the accommodating cavity are respectively formed with card grooves; the two side walls of the terminal seat are respectively integrally connected with elastic clips, and when the terminal seat is inserted into the accommodating cavity, the elastic clips are squeezed inwardly and deformed by the side walls of the accommodating cavity, and when the terminal seat is inserted into place, the elastic clips are elastically released and clamped in the card grooves.

[0012] Optionally, a sealing ring groove surrounding the accommodating cavity is formed on the front end surface of the shell body, and an elastic sealing ring is provided in the sealing ring groove.

[0013] Optionally, an outer wall of the wiring part is formed with an external thread, and a plurality of clamping arms distributed circumferentially are formed at the end of the wiring part; a wire sealing ring is sleeved on the outer side of the cable, and the wire sealing ring is clamped by the plurality of clamping arms, and a fastening nut is sleeved on the outer side of the wiring part, and the internal thread of the fastening nut is connected to the external thread of the wiring part.

[0014] In the present invention, the support portion of the first wire clamping portion forms an L-shaped structure with the connecting plate, rather than extending backward in a roughly linear manner. Compared with a wire clamping portion extending backward in a roughly linear manner, the overall length of the connector can be effectively reduced. Moreover, since the bottom edge of the connecting plate is higher than the bottom edge of the first side plate, and thus, compared with the wire clamping portion extending downward from the bottom plate of the power terminal, the top of the first wire clamping portion in the present invention is significantly raised, which is conducive to reducing the overall height of the terminal seat and the connector. In other words, the present invention can reduce the impact on the overall height of the connector on the basis of reducing the overall length of the connector, thereby saving the assembly space of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the power line end connector after wiring according to an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the power line end connector shown.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the shell of the embodiment of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the terminal seat, power terminal and signal terminal of the embodiment of the utility model.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the power terminal of the embodiment of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the signal terminal of the embodiment of the utility model.

[0021] Figure 7 It is a schematic cross-sectional structure diagram of the power line end connector according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation modes and the accompanying drawings.

[0023] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0024] See also Figures 1 to 7The embodiment of the utility model discloses a power line end connector for a servo motor, including a housing 1, a terminal seat 2, a power terminal 3 and a signal terminal 4. The housing 1 includes a housing body 11 and a wiring portion 12 connected to the housing body 11, and a forward-opening accommodating cavity 13 is formed on the housing body 11, and a mounting hole 14 connecting the accommodating cavity 13 and the outside is formed on the wiring portion 12 for the power line and the signal line to extend into. The terminal seat 2 is inserted into the accommodating cavity 13 of the housing 1, and a power terminal slot 21 and a signal terminal slot 22 that penetrate from front to back are opened on the terminal seat 2. The power terminal 3 is arranged in the power terminal slot 21, and the signal terminal 4 is arranged in the signal terminal slot 22. The power terminal 3 includes a first main body portion 31, which includes two first side plates 311 arranged opposite to each other, wherein one of the first side plates 311 extends a connecting plate 32 backward, and the bottom edge of the connecting plate 32 is higher than the bottom edge of the first side plate 311. The rear end of the connecting plate 32 extends backward beyond the power terminal groove 21 and is downwardly connected to a first wire clamping portion 33. The first wire clamping portion 33 includes a supporting portion 331 for placing the power line. The supporting portion 331 and the connecting plate 32 form an L-shaped structure, and power line rivet sheets extend from both sides of the supporting portion 331 respectively.

[0025] It should be explained that, in the present utility model, directional words such as "front", "back", "upper" and "lower" are only defined for the convenience of description, and "front" and "back", "upper" and "lower" are all relative.

[0026] In a specific example, there are four power terminals 3 arranged in a row, and there are two signal terminals 4 arranged in a row. The power terminals 3 and the signal terminals 4 are respectively arranged on the upper side and the lower side of the terminal base 2 .

[0027] In a specific example, the wiring portion 12 is connected to the bottom wall of the accommodating cavity 13 , but is not limited thereto.

[0028] In the present invention, the support portion 331 of the first wire clamping portion 33 forms an L-shaped structure with the connecting plate 32, rather than extending backward in a roughly linear manner. Compared with a wire clamping portion extending backward in a roughly linear manner, the overall length of the connector can be effectively reduced. Moreover, since the bottom edge of the connecting plate 32 is higher than the bottom edge of the first side plate 311, and thus, compared with the wire clamping portion extending downward from the bottom plate of the power terminal, the top of the first wire clamping portion 33 in the present invention is significantly raised, which is conducive to reducing the overall height of the terminal block 2 and the connector. In other words, the present invention can reduce the impact on the overall height of the connector on the basis of reducing the overall length of the connector, thereby saving the assembly space of the servo motor.

[0029] In some embodiments, the housing body 11 can be fixedly connected to the motor housing (not shown) by screws 9 .

[0030] In some embodiments, a sealing ring groove 15 surrounding the accommodating cavity 13 is formed on the front face of the housing body 11, and an elastic sealing ring 5 is provided at the sealing ring groove 15. When the housing body 11 is fixedly connected to the motor housing, the elastic sealing ring 5 fits tightly on the motor housing, thereby playing a role of sealing and waterproofing, preventing external liquid from entering the connector and the motor from between the housing body 11 and the motor housing, which is conducive to improving product reliability.

[0031] Specifically, the elastic sealing ring 5 can be made of a highly elastic material that meets the waterproof grade IP67 to ensure a sealing effect.

[0032] In some embodiments, the power line riveting piece includes a pair of core line riveting pieces 332 and a pair of outer layer riveting pieces 333, and the outer layer riveting piece 333 is located below the core line riveting piece 332. When assembling the power line, the core line of the power line is placed at the support portion 331 between the pair of core line riveting pieces 332, and the outer layer of the power line is placed at the support portion 331 between the pair of outer layer riveting pieces 333, and then the core line riveting piece 332 and the outer layer riveting piece 333 are crimped to achieve a stable assembly of the power line.

[0033] In some embodiments, a row of partitions 23 extend backwards from the rear end of the terminal seat 2, and the first wire clamping portion 33 of the power terminal 3 is located between adjacent partitions 23. The provision of the partitions 23 can prevent short circuits caused by flying wires.

[0034] In some embodiments, the two first side plates 311 extend forwardly with a pair of elastic clamping arms 34, and the free ends of the two elastic clamping arms 34 arch inwardly toward each other to form a pair of clamping portions 341. Through the arrangement of the elastic clamping arms 34 and the clamping portions 341, reliable contact with the docking pins can be achieved.

[0035] In some embodiments, the first main body 31 is in a rectangular frame shape, and further includes a first top plate 312 and a first bottom plate 313 . The rectangular frame design of the first main body 31 is beneficial to the structural reliability of the power terminal 3 .

[0036] In some embodiments, the first top plate 312 is provided with a buckle 314 protruding upward, the top wall of the power terminal slot 21 is formed with a buckle 211 concave upward, and the rear end surface of the terminal seat 2 is formed with a guide groove 24 connected to the rear end top of the power terminal slot 21; when the power terminal 3 is inserted into the power terminal slot 21, the buckle 314 is inserted from the guide groove 24 and then pressed downward by the top wall of the power terminal slot 21, and when the power terminal 3 is inserted into place, the buckle 314 pops up and is clamped in the buckle 211. The cooperation between the buckle 314 and the buckle 211 is conducive to the stable installation of the power terminal 3, and the buckle 314 can be quickly inserted from the guide groove 24 when the power terminal 3 is plugged into the power terminal slot 21 through the guidance of the guide groove 24.

[0037] In some embodiments, the signal terminal 4 includes a second main body 41 in the shape of a rectangular frame, the second main body 41 includes two second side plates 411, a second top plate 412 and a second bottom plate 413, two elastic clamping arms 42 arranged opposite to each other extend forward from the middle of the second top plate 412 and the second bottom plate 413, the free ends of the two elastic clamping arms 42 arch inwardly toward each other to form a pair of clamping portions 421, and a pair of connecting arms 43 extend forward from the two second side plates 411, and the front ends of the two connecting arms 43 are connected to a plug-in port 44 in the shape of a rectangular frame. By providing a plug-in port 44 in the shape of a rectangular frame at the front end of the signal terminal 4, blind insertion of the docking pin can be achieved, and by providing the two elastic clamping arms 42 and the two inwardly arched clamping portions 421, the connection between the docking pin and the signal terminal 4 can be ensured to be stable.

[0038] Specifically, the rear end of the second bottom plate 413 or the second top plate 412 extends backward to form a support portion 45 for supporting the signal line, and a pair of core wire rivet pieces 46 and a pair of outer sheath rivet pieces 47 are provided on both sides of the support portion 45, wherein the outer sheath rivet pieces 47 are located at the rear side of the core wire rivet pieces 46. When assembling the signal line, the core wire of the signal line is placed at the support portion 45 position between the pair of core wire rivet pieces 46, and the outer sheath of the signal line is placed at the support portion 45 position between the pair of outer sheath rivet pieces 47, and then the core wire rivet pieces 46 and the outer sheath rivet pieces 47 are crimped to achieve stable assembly of the signal line.

[0039] In order to achieve stable installation of the terminal block 2, the two opposite side walls of the accommodating cavity 13 are respectively formed with a card slot 16, and the two side walls of the terminal block 2 are respectively connected with an elastic card buckle 25 in one piece. When the terminal block 2 is inserted into the accommodating cavity 13, the elastic card buckle 25 is squeezed inwardly by the side wall of the accommodating cavity 13 and deformed. When the terminal block 2 is inserted into place, the elastic card buckle 25 is elastically released and clamped in the card slot 16. The coordination of the elastic card buckle 25 integrally connected to the two side walls of the terminal block 2 and the card slot 16 on the two side walls of the accommodating cavity 13 facilitates the stable installation of the terminal block 2 in the accommodating cavity 13, and the terminal block 2 can be disassembled by toggling the elastic card buckle 25, thereby facilitating the adjustment of the outlet direction and the modification after the line sequence is wrong.

[0040] In some embodiments, the rear end of the elastic clip 25 is connected to the side wall of the terminal base 2, and the front end of the elastic clip 25 is a free end.

[0041] Specifically, the elastic buckle 25 includes a connecting portion 251 and a buckle portion 252, wherein the rear end of the connecting portion 251 is connected to the side wall of the terminal base 2, and the rear end of the buckle portion 252 is connected to the front end of the connecting portion 251, and the buckle portion 252 gradually becomes thicker outward from the back to the front. This arrangement is conducive to achieving a stable buckle fit.

[0042] Specifically, the two side walls of the terminal base 2 extend backwards from the two side plates 26, and the rear end of the elastic buckle 25 is connected to the rear end of the side plates 26. In the specific example, the first clamping part 33 of the power terminal 3 on both sides is located between the side plates 26 and the partition 23.

[0043] Specifically, a notch 253 extending forward is formed on the outer side of the front end of the elastic buckle 25. When the elastic buckle 25 is locked in the slot 16, the notch 253 allows the operating member to extend into the notch to elastically deform the elastic buckle 25 inward. The notch 253 is provided to facilitate the inward deformation of the elastic buckle 25 locked in the slot 16, so that the terminal block 2 can be taken out of the accommodating cavity 13, thereby realizing the detachability of the terminal block 2.

[0044] More specifically, the side wall of the accommodating cavity 13 is formed with a notch 17 at the front end of the card slot 16, which is connected to the card slot 16, and the notch 17 corresponds to the notch 253. The notch 17 corresponding to the notch 253 makes it easier to operate the elastic buckle 25 to elastically deform inward to remove the terminal seat 2.

[0045] In some embodiments, the terminal block 2 can be inserted into the housing 13 of the housing 1 in both forward and reverse directions. When the terminal block 2 is inserted into the housing 13 in both forward and reverse directions, the elastic buckle 25 is adapted to be clamped in the clamping groove 16. This arrangement facilitates the rapid assembly of the terminal block 2 and facilitates the adjustment of the outlet direction.

[0046] Specifically, the four corners of the rear end of the accommodating cavity 13 are respectively provided with L-shaped limit blocks 18 protruding inward, and the front end of the L-shaped limit block 18 is formed with an L-shaped guide slope 181, and the guide slope 181 is connected to the L-shaped inner surface of the L-shaped limit block 18; when the terminal block 2 is inserted into the accommodating cavity 13, the upper and lower ends of the two side plates 26 are respectively guided by the corresponding guide slopes 181 to be inserted into the inner side of the L-shaped limit block 18, and are inserted backward into place along the L-shaped inner surface of the L-shaped limit block 18. Through this arrangement, after the terminal block 2 is inserted into the accommodating cavity 13, the terminal block 2 can be more stably assembled in the accommodating cavity 13 by the limitation of the four L-shaped limit blocks 18 and the cooperation of the elastic buckles 25 and the card slots 16 on both sides. In addition, by setting up four L-shaped limit blocks 18, a gap is formed between most areas of the two side walls, top wall and bottom wall of the terminal seat 2 and the inner wall of the accommodating cavity 13, which is convenient for assembling and removing the terminal seat 2. At the same time, by setting up the gap between the side wall of the terminal seat 2 and the inner wall of the accommodating cavity 13, the elastic buckle 25 is easy to operate.

[0047] In some embodiments, an outer wall of the wiring portion 12 is formed with an external thread 122, and a plurality of clamping arms 123 are formed at the end of the wiring portion 12 and are distributed at intervals in the circumferential direction; a wire sealing ring 7 is sleeved on the outer side of the cable 6, and the wire sealing ring 7 is clamped inside by a plurality of clamping arms 123, and a fastening nut 8 is sleeved on the outer side of the wiring portion 12, and the internal thread of the fastening nut 8 is connected to the external thread 122 of the wiring portion 12. Since the wiring portion 12 with the external thread 122 and the plurality of clamping arms 123 is formed integrally in the housing 1, there is no need to set a special wire clamp, which saves the manufacturing cost for assembling the cable 6 and the wire sealing ring 7.

[0048] Specifically, the wire sealing ring 7 can be made of a high-elastic material that meets the waterproof grade IP67 to ensure the sealing effect.

[0049] The above disclosure is only a preferred example of the present invention, and its role is to facilitate the technical personnel in this field to understand and implement it. Of course, it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A power line connector for a servo motor, characterized in that: include: Housing, terminal block, power terminal and signal terminal, The housing comprises a housing body and a wiring portion connected to the housing body, the housing body is formed with a accommodating cavity opening forward, and the wiring portion is formed with a mounting hole connecting the accommodating cavity and the outside; The terminal seat is inserted into the accommodating cavity of the housing, and the terminal seat is provided with a power terminal slot and a signal terminal slot which penetrate the front and back; The power terminal is arranged in the power terminal slot, and the signal terminal is arranged in the signal terminal slot; The power terminal includes a first main body, which includes two first side plates arranged opposite to each other, wherein a connecting plate extends rearward from one of the first side plates, and the bottom edge of the connecting plate is higher than the bottom edge of the first side plate. The rear end of the connecting plate extends rearward beyond the power terminal groove and is downwardly connected to a first wire clamping portion, and the first wire clamping portion includes a supporting portion for placing the power line, the supporting portion and the connecting plate form an L-shaped structure, and power line rivet sheets extend from both sides of the supporting portion.

2. The power line end connector according to claim 1, characterized in that: The power line riveting piece includes a pair of core line riveting pieces and a pair of outer layer riveting pieces, and the outer layer riveting pieces are located below the core line riveting pieces.

3. The power line end connector according to claim 1, characterized in that: A row of partitions extends backward from the rear end of the terminal seat, and the first wire clamping portion of the power terminal is located between adjacent partitions.

4. The power line end connector according to claim 1, characterized in that: A pair of elastic clamping arms extend forward from the two first side plates, and the free ends of the two elastic clamping arms arch inwardly toward each other to form a pair of clamping parts.

5. The power line end connector according to claim 1, characterized in that: The first main body is in a rectangular frame shape and further includes a first top plate and a first bottom plate.

6. The power line end connector according to claim 5, characterized in that: The first top plate is provided with a buckle protruding upward, the top wall of the power terminal slot is recessed upward to form a buckle groove, and the rear end face of the terminal seat is formed with a guide groove connected to the rear end top of the power terminal slot; when the power terminal is inserted into the power terminal slot, the buckle is inserted into the guide groove and then squeezed downward by the top wall of the power terminal slot, and when the power terminal is inserted into place, the buckle pops up and is locked in the buckle groove.

7. The power line end connector according to claim 1, characterized in that: The signal terminal includes a second main body portion in the shape of a rectangular frame, the second main body portion includes two second side plates, a second top plate and a second bottom plate, two elastic clamping arms arranged opposite to each other extend forward from the middle of the second top plate and the second bottom plate, the free ends of the two elastic clamping arms arch inwardly toward each other to form a pair of clamping portions, and a pair of connecting arms extend forward from the two second side plates, and the front ends of the two connecting arms are connected to a rectangular frame-shaped plug-in port.

8. The power line end connector according to claim 1, characterized in that: The opposite side walls of the accommodating cavity are respectively formed with card grooves; the two side walls of the terminal seat are respectively integrally connected with elastic clips, and when the terminal seat is inserted into the accommodating cavity, the elastic clips are squeezed inwardly and deformed by the side walls of the accommodating cavity. When the terminal seat is inserted into place, the elastic clips are elastically released and clamped in the card grooves.

9. The power line end connector according to claim 8, characterized in that: A sealing ring groove surrounding the accommodating cavity is formed on the front end surface of the shell body, and an elastic sealing ring is arranged at the sealing ring groove.

10. The power line end connector according to claim 1, characterized in that: An external thread is formed on the outer wall of the wiring part, and a plurality of clamping arms distributed circumferentially are formed at the end of the wiring part; a wire sealing ring is sleeved on the outer side of the cable, and the wire sealing ring is clamped inside by the plurality of clamping arms, and a fastening nut is sleeved on the outer side of the wiring part, and the internal thread of the fastening nut is connected to the external thread of the wiring part.

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