Center pin structure riveted DC connector and riveting equipment thereof

Abstract

The invention relates to the technical field of DC connectors, in particular to a center pin structure riveted DC connector and riveting equipment thereof.The DC connector comprises a connector main body and a center pin riveted on the connector main body, a baffle ring is integrally formed on the outer side of the center pin, a positioning step is formed at the riveting end of the center pin, and the center pin is riveted on the positioning step. The DC connector can lock the terminal and prevent the central pin from shaking back and forth. The riveting equipment is composed of the lifting part, the riveting part and the bearing part, and the riveting part is provided with the riveting head capable of conducting heating and the driving mechanism for driving the riveting head to rotate. The bearing part comprises a base plate fixedly installed on the top of the base plate, a bracket fixed to the top of the base plate, a supporting block arranged in the bracket and used for supporting the center needle, and a rotating mechanism arranged in the bracket and used for driving the supporting block to rotate. And the pressure applied in the riveting process can be reduced.

Description

Technical Field

[0001] This invention relates to the field of DC connector technology, specifically a DC connector with a center pin structure and its riveting equipment. Background Technology

[0002] A DC connector is an interface element that transmits direct current through a cylindrical metal outer shell and a central metal inner pin. In existing DC connectors, the central pin is a smooth cylinder with no positioning steps, meaning the terminal is only indirectly limited by external fixing components, making it prone to back-and-forth wobbling and resulting in poor stability.

[0003] The prior art also discloses a Chinese patent with publication number CN 210744434 U: a center pin riveting station for an RF coaxial connector, including an L-shaped arm hinged to one side of a fixed post, a hollow groove opened on the L-shaped arm, a hollow post slidably sleeved inside the hollow groove, a lower pressure post connected to the inside of the hollow post by a return spring, and a riveting device installed at the bottom of the lower pressure post. The part of the center pin to be riveted is accurately positioned by controlling the movement of the L-shaped arm, and the riveting device performs an accurate riveting operation on the part to be riveted by using the lower pressure handle.

[0004] However, the aforementioned existing technology still has certain drawbacks. In use, the riveting process is completed solely by the vertical downward movement of the riveting tool. Furthermore, due to the large external force applied, the riveting end of the center pin is easily damaged. In addition, manual operation is time-consuming and labor-intensive, and the riveting quality is inconsistent. Summary of the Invention

[0005] The purpose of this invention is to provide a DC connector with a center pin structure and a riveting device thereof, so as to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions: A DC connector with a center pin structure for riveting, the DC connector comprising: The center pin has a retaining ring integrally formed on its outer side, and a positioning step is provided at the riveting end of the center pin. The connector body, with the center pin riveted to it.

[0007] The present invention also provides a riveting device for riveting the connector body and the center pin of a DC connector with the above-mentioned center pin structure, the riveting device comprising: The lifting unit includes a base plate, a lifting plate suspended on top of the base plate, and a cylinder fixedly installed between the base plate and the lifting plate. The riveting part includes a mounting base fixedly installed at the bottom of the lifting plate, a pressure column rotatably installed at the bottom end of the mounting base, a riveting head installed at the bottom end of the pressure column, and a driving mechanism for driving the pressure column and the riveting head to rotate. The riveting head is hollow, and an electric heating plate is fixedly embedded inside the cavity of the riveting head. The support portion includes a pad fixedly mounted on the top of the base plate, a bracket fixed on the top of the pad, a support block disposed inside the support block for supporting the center needle, and a rotation mechanism disposed inside the support block for driving the support block to rotate.

[0008] As a preferred embodiment of the riveting equipment of the present invention, the driving mechanism includes a bracket fixedly disposed on the outside of the mounting base and a gear 1 rotatably mounted on the bottom of the mounting base via a rotating rod. A gear disc 1 meshing with the gear 1 is fixedly sleeved on the outside of the pressure column. A shaft is rotatably mounted on the mounting base, and the pressure column is rotatably sleeved on the outside of the shaft via a bearing. The bottom end of the pressure column is movably connected to a connecting rod, the riveting head is fixedly connected to the bottom end of the connecting rod, the bottom end of the shaft is fixedly connected to a retaining strip, the top end of the connecting rod is provided with a retaining groove that is directly opposite to the retaining strip, the retaining strip is movably inserted into the corresponding retaining groove, and the shaft and the connecting rod are both fixedly installed with connecting ends on opposite ends.

[0009] As a preferred embodiment of the riveting equipment of the present invention, the riveting part further includes a positioning component installed at the bottom end of the pressure column. The positioning component includes a column groove opened at the bottom end of the pressure column, a column cylinder is movably inserted into the column groove, a spring is fixedly connected between one end of the column cylinder located inside the column groove and the end face of the inner cavity of the column groove, and an infrared rangefinder is fixedly installed inside the column cylinder.

[0010] As a preferred embodiment of the riveting equipment of the present invention, the support includes an outer cylinder fixed to the top of the pad and an inner cylinder movably sleeved inside the outer cylinder. The top and bottom of the outer side of the inner cylinder are provided with annular grooves. A plurality of locking pins are fixedly embedded at the positions corresponding to the two annular grooves on the outer side of the outer cylinder. A through hole is provided at the bottom of the inner cylinder, and the support block is movably inserted into the through hole.

[0011] As a preferred embodiment of the riveting equipment of the present invention, the rotating mechanism includes a gear disk II fixedly sleeved at the bottom edge of the outer side of the support block and a gear II rotatably mounted on the inner side of the outer cylinder via a rotating rod, wherein the projections of the gear disk II and the gear II in the vertical direction are meshed, and a guide post that movably penetrates the gear disk II is fixedly provided at the bottom of the inner cylinder.

[0012] As a preferred embodiment of the riveting equipment of the present invention, wherein: a clamping mechanism is provided inside the inner cylinder, the clamping mechanism is composed of three clamping units evenly distributed in a ring, the clamping unit includes a lifting column fixedly connected to the top of the gear two and a guide rod fixedly on the top of the inner side of the inner cylinder opposite to the lifting column, the top of the lifting column movably penetrates through the bottom of the inner cylinder, and a spring two fixedly connects the lifting column and the top surface of the inner side of the inner cylinder on the outer top of the guide rod; A through slot is provided on one side of the lifting column, and a crossbar is fixedly installed inside the through hole of the lifting column at the bottom of the inner cylinder. The bottom end of the guide rod movably passes through the corresponding lifting column and is fixedly connected to the corresponding crossbar.

[0013] As a preferred embodiment of the riveting equipment of the present invention, the clamping unit further includes a clamping block, an elastic element is fixedly provided between the clamping block and the inner side of the inner cylinder, and a plurality of rubber protrusions are fixedly provided on one side of the clamping block, and wedge blocks are fixedly provided on the opposite side of the lifting column and the clamping block.

[0014] As a preferred embodiment of the riveting equipment of the present invention, a suction mechanism is provided between the outer cylinder and the inner cylinder. The suction mechanism includes a cylinder seat fixed to the top of the pad and an annular column movably inserted into the cylinder seat. A disc is movably sleeved inside the cylinder seat. A round rod fixedly connected to the disc is movably inserted inside the annular column. A spiral groove is opened on the inner side of the cylinder seat. A protruding column slidably connected to the spiral groove is fixed on the outer side of the disc. The top of the annular column is rotatably installed with a bearing between it and the support block. A second annular piece is fixedly sleeved on the outer side of the annular column. A third spring movably sleeved on the outer side of the annular column is fixedly connected between the second annular piece and the cylinder seat.

[0015] As a preferred embodiment of the riveting equipment of the present invention, the suction and fixing mechanism further includes a cavity opened at the position of the support block axis, the top end of the round rod movably penetrates the bottom end of the support block, and a lever is fixedly connected to one end of the round rod extending into the cavity. The cavity is equipped with two movable plates. The opposite sides of the two movable plates are fixedly connected to the corresponding sides of the cavity with elastic elements and limiting elements. The top of the support block has an air hole that communicates with the cavity, and an air pipe that communicates with the cavity is installed on the outside of the support block.

[0016] The beneficial effects of this invention are: 1. By creating a positioning step at the riveting end of the center pin and integrally forming a retaining ring on the outside of the center pin, the present invention can use the retaining ring and positioning step to axially limit the assembled terminal by the positioning step, while restricting radial movement, locking the terminal, and preventing the center pin from wobbling back and forth, thus effectively improving the stability and reliability of the target DC connector during use. 2. This invention can improve riveting efficiency and quality by controlling the riveting head and the center pin to rotate in opposite directions, and by using a heated riveting head to preheat the riveting end of the center pin, while also reducing the pressure applied during the riveting process. 3. The present invention uses a cylinder with a T-shaped structure and sets the mating transition surface of the T-shaped structure as an arc-shaped structure. At the same time, the bottom surface of the upper part of the cylinder is a concave arc surface, which helps to form a smooth arc surface during the riveting process, thereby avoiding the situation where the sharp edges scratch the hands of the workers during the actual assembly process. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a first-view overall structural schematic diagram of the DC connector of the present invention; Figure 2 This is a second-view overall structural diagram of the DC connector of the present invention; Figure 3 This is a cross-sectional schematic diagram of the DC connector of the present invention; Figure 4 This is a schematic diagram of the unfolded DC connector of the present invention; Figure 5 This is a schematic diagram of the overall structure of the riveting equipment of the present invention; Figure 6 This is a schematic diagram of the riveting equipment of the present invention. Figure 7 This is a schematic diagram of the riveting pressing part structure of the riveting equipment of the present invention; Figure 8 This is a schematic cross-sectional view of the riveting section of the riveting equipment of the present invention; Figure 9 This is a partial structural diagram of the riveting part of the riveting equipment of the present invention; Figure 10 This is a schematic diagram of the support structure of the riveting equipment of the present invention; Figure 11 This is a schematic diagram of the support portion of the riveting equipment of the present invention. Figure 12 This is a schematic diagram of the clamping mechanism structure of the riveting equipment of the present invention; Figure 13 This is a partial structural diagram of the suction and fixing mechanism of the riveting equipment of the present invention; Figure 14 This is the present invention. Figure 10 Enlarged schematic diagram of section A in the middle; Figure 15 This is the present invention. Figure 10 Enlarged schematic diagram of part B in the middle Figure 16 This is a schematic diagram of a traditional center pin structure riveting; Figure 17 This is a schematic diagram of the riveting of the central pin structure of the present invention.

[0018] The reference numerals in the diagram are as follows: 1. Center pin; 2. Connector body; 21. Base; 22. Back cover; 23. Spring; 24. Positioning protrusion; 25. Stationary piece; 26. Terminal; 27. Guide groove; 28. End; 3. Lifting part; 31. Base plate; 32. Lifting plate; 33. Cylinder; 4. Riveting part; 41. Mounting seat; 42. Pressure column; 43. Riveting head; 44. Positioning assembly; 441. Column groove; 442. Column cylinder; 443. Spring 1; 444. Infrared rangefinder; 45. Bracket; 46. Gear 1; 47. Gear disc 1; 48. Shaft; 49. Ring piece 1; 410. Power supply module; 411. Connecting rod; 412. Connecting end; 5. Support part; 51. Pad; 52. Support; 521. Outer cylinder; 522. Inner cylinder; 523, locking post; 524, annular groove; 53, clamping mechanism; 531, lifting post; 532, guide rod; 533, spring two; 534, through groove; 535, clamping block; 536, wedge block; 537, elastic element one; 538, rubber protrusion; 54, rotating mechanism; 541, gear two; 542, gear disc two; 543, guide post; 55, suction mechanism; 551, cylinder seat; 552, annular post; 553, annular plate two; 554, spring three; 555, round rod; 556, disc; 557, lever block; 558, spiral groove; 559, protruding post; 5510, cavity; 5511, elastic element two; 5512, limiting element; 5513, movable plate; 5514, air pipe; 5515, air hole; 56, support block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The DC connector of this invention is a common interface element for transmitting DC power. It is one of the electronic components used to connect two or more spaced connection positions and is widely used in consumer electronics, communication and network equipment, security monitoring systems, industrial control and automation, professional audio and video equipment and other fields.

[0021] The riveting equipment of the present invention is one of the equipment used to produce the above-mentioned DC connector, mainly used to rivet the center pin to the connector body.

[0022] Example 1: Refer to the appendix of the instruction manual. Figures 1-3 The present invention provides a DC connector with a center pin structure riveting. The DC connector includes: a connector body 2 and a center pin 1 riveted on the connector body 2. A retaining ring is integrally formed on the outer side of the center pin 1, and a positioning step is provided at the riveting end of the center pin 1.

[0023] It should be noted that by creating a positioning step at the riveting end of the center pin 1 and integrally forming a retaining ring on the outside of the center pin 1, the present invention can use the retaining ring and positioning step to axially limit the terminal after assembly by the positioning step, while restricting radial movement. This not only locks the terminal but also prevents the center pin from wobbling back and forth, causing displacement, which in turn leads to arcing and poor contact. This effectively improves the stability and reliability of the target DC connector during use. In contrast, traditional center pins do not have a positioning step. After riveting, the terminal is only indirectly limited by external fasteners, which is prone to back and forth wobbling and has poor stability.

[0024] Furthermore, such as Figures 3-4 As shown, the connector body 2 includes a base 21 and a rear cover 22. Two guide grooves 27 are formed at one end of the base 21, and an end head 28 for positioning the installed rear cover 22 is fixedly provided on the end face of the base 21 with the guide grooves 27. The base 21 and the rear cover 22 are fixedly connected. A spring piece 23 and a stationary piece 25 are slidably connected inside the two guide grooves 27, respectively. One end of both the spring piece 23 and the stationary piece 25 is located inside the base 21. The stationary piece 25 uses the spring piece 23 to prevent disengagement from the rear cover 22, and the spring piece 23 uses the base 21 to prevent disengagement from the rear cover 22. A positioning protrusion 24 is fixedly provided on the side of the rear cover 22 away from the base 21. The center pin 1 extends to the outside of the connector body 2 (see...). Figure 1 One end of the connector is movably fitted with a terminal 26, and the outer side of the connector body 2 is fixedly provided with a buckle plate for pre-limiting the terminal 26. The positioning protrusion 24 moves through the terminal 26.

[0025] It should be noted that by adopting a modular design for the connector body 2, the present invention facilitates rapid assembly and molding, simplifies the production process, and enables mass production of each assembly module, thereby improving production efficiency.

[0026] Example 2: Refer to the appendix of the instruction manual. Figures 5-6The present invention provides a riveting device for a DC connector with a center pin structure, used to rivet the aforementioned center pin 1 to the connector body 2. The riveting device consists of a lifting part 3, a riveting part 4, and a supporting part 5. The lifting part 3 includes a base plate 31, a lifting plate 32 suspended on the top of the base plate 31, and a cylinder 33 fixedly installed between the base plate 31 and the lifting plate 32. The cylinder 33 is a single-acting cylinder of model DSA25N200. The riveting part 4 is fixedly installed at the bottom of the lifting plate 32, and the supporting part 5 is fixedly installed at the top of the base plate 31.

[0027] It should be noted that the present invention places the center pin to be riveted on the support part 5 and fastens the connector body 2 on the outside of the center pin 1. Then, the cylinder 33 drives the lifting plate 32 with the riveting part 4 installed to move downward, and the riveting part 4 is used to complete the riveting action between the center pin 1 and the connector body 2.

[0028] Furthermore, such as Figures 7-9 As shown, the riveting part 4 includes a mounting base 41 fixedly installed at the bottom of the lifting plate 32, a pressure column 42 rotatably installed at the bottom end of the mounting base 41, a riveting head 43 installed at the bottom end of the pressure column 42, and a drive mechanism for driving the pressure column 42 and the riveting head 43 to rotate. The riveting head 43 is hollow, and an electric heating plate is fixedly embedded inside the cavity of the riveting head 43. Furthermore, the drive mechanism includes a shaft 48 rotatably mounted on the mounting base 41, and a pressure column 42 rotatably sleeved on the outside of the shaft 48 via a bearing. The shaft 48 is fixedly sleeved with an annular piece 49 for limiting the axial position of the shaft 48. The shaft 48 is driven to rotate by a drive motor installed inside the mounting base 41, so as to drive the riveting head 43 to perform rotational riveting on the riveting end of the center pin 1. A docking rod 411 is movably inserted into the bottom end of the pressure column 42. The riveting head 43 is fixedly connected to the bottom end of the docking rod 411. A retaining strip is fixedly connected to the bottom end of the shaft 48. A retaining groove is opened at the top end of the docking rod 411, which is directly opposite to the retaining strip. The retaining strip is movably inserted into the corresponding retaining groove, which can ensure that the shaft 48 can drive the docking rod 411 to rotate synchronously when it rotates. A connecting end 412 is fixedly installed on the opposite end of the shaft 48 and the docking rod 411. A power supply module 410 for supplying power to the electric heating plate is fixedly sleeved on the outside of the shaft 48. The connecting end 412 is the docking terminal used for wiring in the prior art. After the docking rod 411 and the shaft 48 are inserted, the power supply module 410 can make the electric heating plate heat up, thereby heating the riveting head 43. The wires connecting the corresponding docking terminals are respectively passed through the axis of the shaft 48 and the docking rod 411.

[0029] Furthermore, the riveting head 43 is designed as a T-shaped cylinder, and the mating transition surface of the T-shaped structure (i.e., the junction between the two cylinders) is designed as an arc shape. At the same time, the bottom surface of the upper part of the cylinder is a concave arc surface, which helps to form a smooth arc surface during the riveting process, thereby avoiding the situation where sharp edges scratch the hands of workers during actual assembly. It should be noted that during the process of riveting the center pin 1 to the connector body 2, after the connector body 2 is fastened to the outside of the target center pin 1 placed on the support part 5, the riveting part 4 is driven downward by the cylinder 33, so that the riveting head 43 is inserted into the post hole of the riveting end of the center pin 1. Before riveting begins, the riveting head 43 needs to be fully heated in advance, and the riveting end of the center pin 1 is heated by the heated riveting head 43. After the heating is completed, the shaft 48 is controlled to rotate by the control end. At the same time, the cylinder 33 continues to drive the pressure column 42 to move downward, so as to realize the rotational riveting under heating conditions. This not only reduces the pressure applied during the riveting process, but also improves the riveting efficiency and riveting quality.

[0030] Furthermore, such as Figures 7-8 As shown, the drive mechanism also includes a bracket 45 fixedly disposed on the outside of the mounting base 41 and a gear 46 rotatably mounted on the bottom of the mounting base 41 via a rotating rod. The gear 46 is driven to rotate by a motor fixedly mounted on the bracket 45. The motor is a servo motor of model JSMA-PUC02D. A gear disc 47 that meshes with the gear 46 is fixedly sleeved on the outside of the pressure column 42.

[0031] Furthermore, the riveting part 4 also includes a positioning component 44 installed at the bottom end of the pressure column 42. The positioning component 44 includes a column groove 441 opened at the bottom end of the pressure column 42. A column cylinder 442 is movably inserted into the column groove 441. A spring 443 is fixedly connected between one end of the column cylinder 442 located inside the column groove 441 and the end face of the inner cavity of the column groove 441. When the spring 443 is in its natural state, the upper end of the column cylinder 442 is still inserted into the column groove 441, and the horizontal plane of the lowest point of the column cylinder 442 is lower than the horizontal plane of the lowest point of the installed riveting head 43. An infrared rangefinder 444 is fixedly installed inside the column cylinder 442. The infrared rangefinder 444 uses an MRD2 series laser rangefinder sensor.

[0032] It should be noted that during the process of riveting the center pin 1 to the connector body 2, after the connector body 2 is fastened to the outside of the target center pin 1 placed on the support part 5, in order to prevent the connector body 2 from rotating along with the center pin 1 during the rotation riveting process, the motor can drive the gear 46 to rotate before the rotation riveting is performed, and the rotating gear 46 can drive the gear disk 47 to rotate, thereby driving the pressure column 42 to rotate. During the rotation of the pressure column 42, the distance signal detected by the infrared rangefinder 444 will be used to determine whether the column cylinder 442, which rotates synchronously with the pressure column 42, is aligned with the positioning protrusion 24 on the surface of the rear cover 22 on the connector body 2. After alignment, the rotation of the pressure column 42 will be stopped. Subsequently, during the riveting process, as the driving pressure column 42 moves downward, the column cylinder 442 first covers the outside of the positioning protrusion on the rear cover 22. Then, as the pressure column 42 continues to press down, the reverse compression spring 443 is compressed until the riveting action is completed. During this process, since the pressure column 42 does not rotate due to the restriction of the stationary gear 46, and the column cylinder 442 covers the outside of the positioning protrusion 24, the connector body 2 remains stationary throughout the entire rotational riveting process, thus improving the effect of rotational riveting.

[0033] Furthermore, such as Figures 10-12 and Figure 14 As shown, the support part 5 includes a pad 51 fixedly installed on the top of the base plate 31, a support 52 fixedly installed on the top of the pad 51, a support block 56 disposed inside the support 52 for supporting the center needle 1, and a rotation mechanism 54 disposed inside the support 52 for driving the support block 56 to rotate.

[0034] Furthermore, the support 52 includes an outer cylinder 521 fixed to the top of the pad 51 and an inner cylinder 522 movably sleeved inside the outer cylinder 521. The top and bottom of the outer side of the inner cylinder 522 are provided with annular grooves 524. A plurality of evenly distributed ring-shaped locking posts 523 are fixedly embedded at the positions corresponding to the two annular grooves 524 on the outer side of the outer cylinder 521. The connection between the locking posts 523 and the outer cylinder 521 includes, but is not limited to, threaded connection. One end of the locking post 523 penetrates the outer cylinder 521 and is movably inserted into the corresponding annular groove 524. The bottom of the inner cylinder 522 is provided with a through hole, and the support block 56 is movably inserted into the through hole.

[0035] It should be noted that during the assembly of the support 52, the outer cylinder 521 is inverted and the inner cylinder 522 is inserted into the outer cylinder 521. At this time, the annular groove 524 on the outer side of the inner cylinder 522 is exactly aligned with the mounting hole of the mounting pin 523 on the outer cylinder 521. Then, the mounting pins 523 are installed into the corresponding mounting holes one by one. After the installation is completed, the inner cylinder 522 and the outer cylinder 521 will not separate, and the two can rotate relative to each other under the action of the rotating mechanism 54.

[0036] Furthermore, such as Figure 11 As shown, the rotating mechanism 54 includes a gear 542 fixedly sleeved at the bottom edge of the outer side of the support block 56 and a gear 541 rotatably mounted on the inner side of the outer cylinder 521 via a rotating rod. The gear 541 is driven to rotate by a drive motor fixedly mounted on the inner side of the outer cylinder 521. The projections of the gear 542 and the gear 541 in the vertical direction are meshed. A guide post 543 is fixedly provided at the bottom of the inner cylinder 522, which movably passes through the gear 542. The guide post 543 can be used to guide the gear 542, which moves down synchronously with the support block 56, to move downwards until it is meshed with the gear 541. When the gear 542 moves to the meshing state with the gear 541, the guide post 543 never disengages from the guiding and limiting state of the gear 542.

[0037] It should be noted that the length of the guide post 543 is greater than the height to which the support block 56 descends when the center pin 1 and the connector body 2 are riveted together. The height to which the support block 56 descends when the center pin 1 and the connector body 2 are riveted together is the distance that the gear disc 542 moves downwards to mesh with the gear 541. During the process of using the rotating mechanism 54 to drive the inner cylinder 522 to rotate synchronously with the gear disc 542, the descending pressure post 42 pushes the center pin 1 downwards to press the support block 56, causing the gear disc 542 to... 2. As the support block 56 moves downward, it engages with the gear 2 541. Then, the corresponding drive motor drives the gear 2 541 to rotate, and the rotating gear 2 541 drives the gear disk 2 542 to rotate. This causes the inner cylinder 522 to rotate synchronously with the gear disk 2 542 under the action of the guide post 543, which rotates synchronously with the gear disk 2 542. Furthermore, during the process of driving the support block 56 to rotate, it is necessary to control the direction of rotation of the support block 56 to be opposite to the direction of rotation of the shaft 48.

[0038] Furthermore, such as Figure 10 , Figure 12 and Figure 14 As shown, a clamping mechanism 53 is provided inside the inner cylinder 522. The clamping mechanism 53 consists of three clamping units evenly distributed in a ring. Each clamping unit includes a lifting column 531 fixedly connected to the top of the gear 2 541 and a guide rod 532 fixedly on the top of the inner side of the inner cylinder 522 opposite to the lifting column 531. The top of the lifting column 531 movably passes through the bottom of the inner cylinder 522. A spring 2 533 is fixedly connected to the lifting column 531 and the top surface of the inner side of the inner cylinder 522. The guide rod 532 can be used to limit the direction of the elastic deformation of the spring 2 533. A through slot 534 is provided on one side of the lifting column 531. A crossbar is fixedly installed inside the through hole of the lifting column 531 at the bottom of the inner cylinder 522 and is movably installed inside the corresponding through slot 534. The bottom end of the guide rod 532 movably passes through the corresponding lifting column 531 and is fixedly connected to the corresponding crossbar. When the crossbar is at the lowest point inside the corresponding through slot 534, the upper end of the support block 56 is in a state of extending into the inner cylinder 522, while the second spring 533 is in a natural state.

[0039] Furthermore, the clamping unit also includes a clamping block 535. An elastic element 537 is fixedly provided between the clamping block 535 and the inner side of the inner cylinder 522. The elastic element 537 includes a sleeve fixedly connected to the inner wall of the inner cylinder 522 and a sleeve rod fixedly connected to the clamping block 535. One end of the sleeve rod is movably inserted into the sleeve. A connecting spring is sleeved on the outer side of the sleeve, which is fixedly connected to the inner wall of the inner cylinder 522 and the clamping block 535. This ensures that the sleeve rod remains inserted into the sleeve during the elastic deformation of the connecting spring. Multiple rubber protrusions 538 are fixedly provided on one side of the clamping block 535. Wedge blocks 536 are fixedly provided on the opposite side of the lifting column 531 and the clamping block 535. When the elastic element 537 is in its natural state, the relative position between the two wedge blocks 536 is as follows: Figure 12 As shown, at this time, the diameter of the cylindrical cavity formed by the clamping surfaces of the three clamping blocks 535 is larger than the diameter of the central pin 1.

[0040] It should be noted that during the process of using the downward pressure column 42 to push the center needle 1 downward, as the center needle 1 pushes the support block 56 downward, the gear disk 542 will move downward accordingly. During the downward movement of the gear disk 542, the lifting column 531 will be driven downward simultaneously, and the wedge block 536 on the lifting column 531 will also move downward. During its downward movement, it will squeeze the wedge block 536 on the corresponding clamping block 535, causing the clamping block 535 to move radially towards the center needle 1 along the inner cylinder 522. When the corresponding clamping block 535 is pushed to its maximum limit, it can be used to clamp the center needle 1. In this state, the contact state between the rubber protrusion 538 and the center needle 1 is a squeezing contact. In this way, the frictional resistance between the clamping block 535 and the center needle 1 can be enhanced, and the stability of the clamping block 535 when holding the center needle 1 can be improved. This ensures that the rotating mechanism 54 can stably drive the support block 56 to drive the clamped center needle 1 to rotate.

[0041] Example 3: Refer to the appendix of the instruction manual. Figures 10-13This embodiment is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that a suction mechanism 55 is provided between the outer cylinder 521 and the inner cylinder 522. The suction mechanism 55 includes a cylinder seat 551 fixed to the top of the pad 51 and an annular column 552 movably inserted into the cylinder seat 551. A disc 556 is movably sleeved inside the cylinder seat 551. A round rod 555 fixedly connected to the disc 556 is movably inserted inside the annular column 552. A spiral groove 558 is opened on the inner side of the cylinder seat 551. There are two spiral grooves 558, which are centrally symmetrical about the central axis of the cylinder seat 551. A protruding post 559 is fixedly slidably connected to the outside of the disc 556 inside the spiral groove 558. The top of the annular column 552 is rotatably mounted to the support block 56 through a bearing. A second annular piece 553 is fixedly sleeved on the outside of the annular column 552. A third spring 554 movably sleeved on the outside of the annular column 552 is fixedly connected between the second annular piece 553 and the cylinder seat 551.

[0042] Furthermore, such as Figure 10 and Figure 15 As shown, the suction mechanism 55 also includes a cavity 5510 opened at the center line of the support block 56, the top end of the round rod 555 movably passes through the bottom end of the support block 56, and a lever 557 is fixedly connected to one end of the round rod 555 that extends into the cavity 5510. The cavity 5510 contains two movable plates 5513. A lever 557, designed in a rhomboid shape, is used to synchronously push the two movable plates 5513 to move in opposite directions. Both ends of the lever 557 are straight surfaces, preventing the two movable plates 5513 from resetting without external force when they are pushed to the furthest point of their opposite movement (i.e., when the straight surfaces at both ends of the lever 557 are in contact with the corresponding surfaces of the movable plates 5513). An elastic element 5511 and a limiting element 5512 are fixedly connected between the opposite sides of the two movable plates 5513 and the corresponding sides of the cavity 5510. Each includes a sleeve 2 fixedly embedded inside the cavity 5510 and a sleeve rod 2 fixedly connected to one side of the corresponding movable plate 5513. The outer side of the sleeve 2 of the elastic element 2 5511 is also fitted with a connecting spring 2 fixedly connected to the inner wall of the cavity 5510 and the corresponding side of the movable plate 5513. The top of the support block 56 is provided with an air hole 5515 communicating with the cavity 5510. An air pipe 5514 communicating with the cavity 5510 is installed on the outer side of the support block 56. The air can be discharged through the air pipe 5514 from the air hole 5514 into the corresponding cavity (i.e., the gap formed between the movable plate 5513 and the corresponding side inside the cavity 5510) compressed when the two movable plates 5513 move in opposite directions.

[0043] Furthermore, an annular groove communicating with the spiral groove 558 is provided at the bottom inner edge of the cylinder base 551. The height of the annular groove is equal to the diameter of the protrusion 559. A pressure sensor is also installed at the bottom of the disc 556. This pressure sensor is a plate differential pressure sensor of model FSR-A406, used to detect whether the rotating mechanism 54 has been activated. In addition, a rubber pad that does not block the air hole 5515 is fixedly covered on the concave arc surface of the support block 56 that supports the center pin 1, used to enhance the frictional resistance between the support block 56 and the center pin 1. At the same time, the drive motor fixedly installed inside the outer cylinder 521 is the same model as the servo motor that drives the aforementioned drive gear 46. This is to ensure that after the protrusion 559 disengages from the spiral groove 558 and stops driving the support block 56 to rotate, the protrusion 559 can accurately enter the spiral groove 558 during the upward movement and reset of the support block 56, ensuring the stable progress of the next riveting process.

[0044] It should be noted that during the process of using the downward pressure column 42 to push the center pin 1 downward, as the center pin 1 pushes the support block 56 downward, the gear disk 542 will move downward accordingly. During the downward movement of the gear disk 542, it will simultaneously drive the ring column 552 downward, and simultaneously drive the round rod 555 downward. While the round rod 555 moves downward with the ring column 552, it will push the disc 556 downward synchronously. Because the outer side of the disc 556 is fixedly provided with a protrusion 559 that is slidably connected to the inside of the spiral groove 558, the disc... As 556 moves downward, it also rotates. The rotating disc 556 drives the paddle 557 located inside the cavity 5510 to rotate synchronously via the rod 555. During the rotation of the paddle 557, it pushes the two movable plates 5513 to move in opposite directions. As the protrusion 559 on the outer side of the disc 556 moves within the section of the spiral groove 558, the paddle 557 is driven to rotate 90°. That is, the rotating paddle 557 pushes the two movable plates 5513 that are moving in opposite directions to their farthest point. During the opposing motion of the two movable plates 5513, the air holes 5515 on the support block 56 are blocked by the central needle, causing the volume of the air cavity formed between the central needle 1 and the two movable plates 5513 to increase. Since the volume of air inside the air cavity is constant, the two movable plates 5513 will create a negative pressure state in the air cavity, thereby firmly adhering the central needle 1 to the support block 56. This, in conjunction with the clamping mechanism 53, improves the clamping stability of the central needle 1, ensuring that the riveting head 43 and the central needle 1 rotating with the support block 56 do not interfere with each other when rotating in opposite directions, thus improving the quality and efficiency of the rotational riveting.

[0045] The working principle of the above riveting equipment is as follows: During the process of riveting the center pin 1 to the connector body 2, after the connector body 2 is fastened to the outside of the target center pin 1 placed on the support part 5, the rotating gear 46 will drive the pressure column 42 to rotate. During the rotation of the pressure column 42, the distance signal detected by the infrared rangefinder 444 will be used to determine whether the column cylinder 442, which rotates synchronously with the pressure column 42, is aligned with the positioning protrusion 24 on the surface of the rear cover 22 on the connector body 2. After alignment, the rotation of the pressure column 42 will be stopped, and then the pressure column 42 will be driven to move downward. During this period, the position of the connector body 2 will be limited by the column cylinder 442. During the downward movement of the pressure column 42, the heating part of the riveting head 43 installed at the lower end of the pressure column 42 will first extend into the inside of the riveting end of the center pin 1. Then, the riveting head 43, which continues to move downward, will push the center pin 1 downward and use the downward moving center pin to push the support block 56 downward. During the downward movement of the central pin to push the support block 56 downward, the gear disc 542 moves downward accordingly. Simultaneously, the lifting column 531 moves downward, and the wedge block 536 on the lifting column 531 also moves downward, pressing the corresponding wedge block 536 on the clamping block 535. This causes the clamping block 535 to move radially towards the central pin 1 along the inner cylinder 522, clamping the central pin. At the same time, the downward movement of the central pin to push the support block 56 downward also simultaneously drives the ring column 552 downward, and the round rod 555 moves downward synchronously. During the downward movement of the ring column 552, the round rod 555 pushes the disc 556 to move downward synchronously. Under the restriction of the spiral groove 558, the disc 556 rotates while moving downward. The rotating disc 556 drives the paddle block 557 located inside the cavity 5510 to rotate synchronously through the round rod 555. During the rotation of the paddle block 557, it pushes the two movable plates 5513 to move in opposite directions, so that the air cavity formed between the center needle 1 and the two movable plates 5513 is in a negative pressure state, thereby firmly adsorbing the center needle 1 onto the support block 56. This, in conjunction with the clamping mechanism 53, improves the clamping stability of the center needle 1. When the downward-moving center pin pushes the support block 56 downward to the state where the gear disk 542 and gear 541 mesh, the drive motor installed inside the outer cylinder 521 drives the gear 541 to rotate. The rotating gear 541 then drives the gear disk 542 to rotate, causing the inner cylinder 522 to rotate synchronously with the gear disk 542 under the action of the guide post 543 that rotates synchronously with the gear disk 542. Furthermore, during the process of driving the center pin 1 to rotate using the rotating mechanism 54, the drive motor installed inside the mounting base 41 drives the shaft 48 to rotate the riveting head 43 in the opposite direction to the rotation of the center pin 1. This controls the riveting head 43 to rotate in the opposite direction to the center pin 1. In addition, the heated riveting head 43 preheats the riveting end of the center pin 1, thereby improving the riveting efficiency and quality, and reducing the pressure applied during the riveting process.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A DC connector with a center pin structure riveting, characterized in that, The DC connector includes: The center pin (1) has a retaining ring integrally formed on its outer side, and the riveting end of the center pin (1) is provided with a positioning step. The connector body (2) has the center pin (1) riveted to it.

2. A riveting device for a DC connector with a center pin structure, wherein the riveting device is used to rivet the center pin (1) of the DC connector with the center pin structure as described in claim 1 to the connector body (2), characterized in that, The riveting equipment includes: The lifting part (3) includes a base plate (31), a lifting plate (32) suspended on the top of the base plate (31), and a cylinder (33) fixedly installed between the base plate (31) and the lifting plate (32). The riveting part (4) includes a mounting base (41) fixedly installed at the bottom of the lifting plate (32), a pressure column (42) rotatably installed at the bottom end of the mounting base (41), a riveting head (43) installed at the bottom end of the pressure column (42), and a driving mechanism for driving the pressure column (42) and the riveting head (43) to rotate. The riveting head (43) is hollow, and an electric heating plate is fixedly embedded in the cavity of the riveting head (43). The support part (5) is fixedly installed on the top of the base plate (31), the support plate (51) is fixed on the top of the support plate (51), the support block (56) is provided inside the support block (52) to support the center needle (1), and the rotation mechanism (54) is provided inside the support block (52) to drive the support block (56) to rotate.

3. The riveting equipment for a DC connector with a center pin structure riveting according to claim 2, characterized in that, The drive mechanism includes a bracket (45) fixedly disposed on the outside of the mounting base (41) and a gear (46) rotatably mounted on the bottom of the mounting base (41) via a rotating rod. A gear disc (47) meshing with the gear (46) is fixedly sleeved on the outside of the pressure column (42). A shaft (48) is rotatably mounted on the mounting base (41). The pressure column (42) is rotatably sleeved on the outside of the shaft (48) via a bearing. The bottom end of the pressure column (42) is movably connected to the connecting rod (411), the riveting head (43) is fixedly connected to the bottom end of the connecting rod (411), the bottom end of the shaft (48) is fixedly connected to the retaining strip, the top end of the connecting rod (411) is provided with a retaining groove that is directly opposite to the retaining strip, the retaining strip is movably inserted into the corresponding retaining groove, and the shaft (48) and the connecting rod (411) are both fixedly installed with connecting ends (412) at opposite ends.

4. The riveting equipment for a DC connector with a center pin structure riveting according to claim 2, characterized in that, The riveting part (4) also includes a positioning component (44) installed at the bottom of the pressure column (42). The positioning component (44) includes a column groove (441) opened at the bottom of the pressure column (42). A column cylinder (442) is movably inserted into the column groove (441). A spring (443) is fixedly connected between one end of the column cylinder (442) located inside the column groove (441) and the end face of the inner cavity of the column groove (441). An infrared rangefinder (444) is fixedly installed inside the column cylinder (442).

5. The riveting equipment for a DC connector with a center pin structure riveting according to claim 2, characterized in that, The support (52) includes an outer cylinder (521) fixed to the top of the pad (51) and an inner cylinder (522) movably sleeved inside the outer cylinder (521). The top and bottom of the outer side of the inner cylinder (522) are provided with annular grooves (524). A number of evenly distributed ring-shaped locking posts (523) are fixedly embedded at the positions corresponding to the two annular grooves (524) on the outer side of the outer cylinder (521). The bottom of the inner cylinder (522) is provided with a perforation, and the support block (56) is movably inserted into the perforation.

6. The riveting equipment for a DC connector with a center pin structure riveting according to claim 5, characterized in that, The rotating mechanism (54) includes a gear plate (542) fixedly sleeved at the bottom edge of the outer side of the support block (56) and a gear (541) rotatably mounted on the inner side of the outer cylinder (521) via a rotating rod. The projections of the gear plate (542) and the gear (541) in the vertical direction are meshed. The bottom of the inner cylinder (522) is fixedly provided with a guide post (543) that movably passes through the gear plate (542).

7. The riveting equipment for a DC connector with a center pin structure riveting according to claim 6, characterized in that, The inner cylinder (522) is provided with a clamping mechanism (53). The clamping mechanism (53) consists of three clamping units evenly distributed in a ring. Each clamping unit includes a lifting column (531) fixedly connected to the top of the gear two (541) and a guide rod (532) fixedly on the top of the inner side of the inner cylinder (522) opposite to the lifting column (531). The top of the lifting column (531) moves through the bottom of the inner cylinder (522). The top of the guide rod (532) is fitted with a spring two (533) that is fixedly connected to the lifting column (531) and the top surface of the inner side of the inner cylinder (522). The lifting column (531) has a through slot (534) on one side. The bottom end of the inner cylinder (522) has a through hole of the lifting column (531) and a crossbar that is movably inserted into the corresponding through slot (534). The bottom end of the guide rod (532) movably inserts through the corresponding lifting column (531) and is fixedly connected to the corresponding crossbar.

8. The riveting equipment for a DC connector with a center pin structure riveting according to claim 7, characterized in that, The clamping unit also includes a clamping block (535), an elastic element (537) is fixed between the clamping block (535) and the inner side of the inner cylinder (522), and a plurality of rubber protrusions (538) are fixed on one side of the clamping block (535). A wedge block (536) is fixed on the opposite side of the lifting column (531) and the clamping block (535).

9. The riveting equipment for a DC connector with a center pin structure riveting according to claim 5, characterized in that, A suction mechanism (55) is provided between the outer cylinder (521) and the inner cylinder (522). The suction mechanism (55) includes a cylinder seat (551) fixed on the top of the pad (51) and an annular column (552) movably inserted into the cylinder seat (551). A disc (556) is movably sleeved inside the cylinder seat (551). A round rod (555) fixedly connected to the disc (556) is movably inserted inside the annular column (552). A spiral groove (558) is opened on the inner side of the cylinder seat (551). A protruding column (559) is slidably connected to the spiral groove (558) on the outer side of the disc (556). The top of the annular column (552) is rotatably installed with the support block (56) through a bearing. A second annular piece (553) is fixedly sleeved on the outer side of the annular column (552). A third spring (554) movably sleeved on the outer side of the annular column (552) is fixedly connected between the second annular piece (553) and the cylinder seat (551).

10. The riveting equipment for a DC connector with a center pin structure riveting according to claim 9, characterized in that, The suction mechanism (55) further includes a cavity (5510) located at the center line of the support block (56), the top end of the round rod (555) movably passes through the bottom end of the support block (56), and a lever (557) is fixedly connected to one end of the round rod (555) extending into the cavity (5510). The cavity (5510) is provided with two movable plates (5513). The two movable plates (5513) are fixedly connected to the opposite side of the cavity (5510) with the corresponding side of the cavity. The top of the support block (56) is provided with an air hole (5515) that communicates with the cavity (5510). An air pipe (5514) that communicates with the cavity (5510) is installed on the outside of the support block (56).

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