A surface mount connector assembly based on an improved pin structure

Abstract

The present invention relates to the technical field of surface-mount connectors, and discloses a surface-mount connector assembly based on an improved pin structure, including an insulating housing. A convex portion is provided in the middle of the interior of the insulating housing. A plurality of card slots are provided at intervals on both sides of the convex portion. A current terminal is provided inside the card slot. A sliding groove is provided on one side of the lower part of the card slot. A sliding block is provided on one side of the current terminal. A first limiting component is provided on one side of the sliding block. A first sliding plate is provided on one side of the sliding groove. A plurality of second limiting components are provided on one side of the first sliding plate. The present invention can make the current terminal move smoothly upward by the contact between the first limiting component and the second limiting component, and limit the downward movement of the current terminal, so as to make the current terminal move smoothly upward and be limited and fixed in the card slot, reducing the situation that the current terminal is disconnected from the insulating housing.

Description

Technical Field

[0001] The present invention belongs to the technical field related to surface mount connectors. More specifically, it particularly relates to a surface mount connector assembly based on an improved pin structure. Background Art

[0002] With the further integration of circuit boards and circuit devices, not only signal terminals for transmitting signals need to be configured, but also current terminals for power supply need to be integrated to facilitate the integrated layout of electrical connections. In order to improve the conductivity of the current terminals, it is necessary to relatively increase the conductive area of the conductive sheet. Therefore, a structure that is convenient for assembly and has a firm connection needs to be designed for the current terminals. However, the surface mount connectors in the prior art have the following defects:

[0003] In the prior art, the current terminals and the insulating housing are usually fixedly connected by welding. However, when welding between the current terminals and the insulating housing, due to the lack of a structure for limiting and fixing the current terminals, workers need to hold and fix them, which affects the stability and efficiency of the welding and fixing between the current terminals and the insulating housing.

[0004] In the prior art, after the surface mount connector assembly is used for a period of time, one or more of the conductive terminals are likely to become detached from the insulating housing, affecting the electrical performance of the surface mount connector assembly. Therefore, it is necessary to improve the firmness of the connection between the conductive terminals and the insulating housing.

[0005] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a surface mount connector assembly based on an improved pin structure is provided, with the expectation of achieving a more practical and valuable purpose. Summary of the Invention

[0006] The present invention provides a surface mount connector assembly based on an improved pin structure to overcome the above defects in the prior art.

[0007] The purpose and effect of a surface mount connector assembly based on an improved pin structure according to the present invention are achieved by the following specific technical means:

[0008] A surface mount connector assembly based on an improved pin structure, comprising an insulating housing. A convex portion is provided in the middle of the interior of the insulating housing. A plurality of card slots are provided at intervals on both sides of the convex portion. A current terminal is provided inside each card slot. The current terminal includes a first limiting portion, a pin portion, and a second limiting portion. The second limiting portion is fixed above the first limiting portion, and the pin portion is fixed below the first limiting portion. A chamfer is provided on the upper side of one end of the pin portion. The second limiting portion has a barb structure. A chute is provided on one side of the lower part of each card slot, and a first limiting block is fixedly provided on the other side of the lower part of each card slot. A slider is fixedly provided on one side of the first limiting portion, and the slider slides vertically in the chute. A first limiting component is provided on one side of the slider, a first hollow elastic member is provided on one side of the chute, a first sliding plate is provided on one side of the first hollow elastic member, and a plurality of second limiting components are provided on one side of the first sliding plate. The first limiting component includes a fixed block, the fixed block is obliquely fixed on one side of the slider, a sliding rod is slidably provided inside the fixed block, a movable block is fixedly provided at the upper end of the sliding rod, a first elastic block is fixedly provided on the lower side of the fixed block, and a second elastic block is fixedly provided on one side of the movable block. The second limiting component includes a third elastic block, the third elastic block is obliquely fixed on one side of the first sliding plate, and a fourth elastic block and a fifth elastic block are fixedly provided on the upper side of the third elastic block.

[0009] Further technical solution, a first elastic member is connected between the upper side of the first elastic block and the lower side of the second elastic block. The first elastic block and the second elastic block have the same inclination direction. The fourth elastic block and the fifth elastic block have the same inclination direction. The fourth elastic block is located above the fifth elastic block in terms of inclination. The lower end plane of the inclined first elastic block is in contact with the upper end plane of the inclined fourth elastic block. The upper side of the first elastic block is in inclined plane contact with the lower side of the fourth elastic block. The lower end plane of the inclined second elastic block is in contact with the upper end plane of the inclined fourth elastic block. The upper side of the second elastic block is in inclined plane contact with the lower side of the fourth elastic block. The lower end plane of the inclined first elastic block is in contact with the upper end plane of the inclined fifth elastic block. The upper side of the first elastic block is in inclined plane contact with the lower side of the fifth elastic block. The lower end plane of the inclined second elastic block is in contact with the upper end plane of the inclined fifth elastic block. The upper side of the second elastic block is in inclined plane contact with the lower side of the fifth elastic block.

[0010] Further technical solution, a second hollow elastic member is connected between the upper side of the fixed block and one side of the slider. The interior of the second hollow elastic member is in communication with the interior of the fixed block. A first spring is connected between the lower end of the inclined sliding rod and the interior of the fixed block.

[0011] Further technical solution: A second elastic member is connected between the lower side of the third elastic block and one side of the first sliding plate. A third elastic member is connected between the upper side of the fifth elastic block and the lower side of the fourth elastic block. One side of the first sliding plate is of an inclined surface structure, and a plurality of the second limiting components are distributed at intervals along the inclined surface on one side of the first sliding plate. The distance between one side of the first sliding plate and the slider gradually narrows from bottom to top.

[0012] Further technical solution: On one side of the lower part of each card slot, there is a hydraulic cavity. Inside each hydraulic cavity, a piston plate slides vertically. A first push rod is fixedly arranged on the lower side of the piston plate. The lower end of each first push rod extends into the inside of the sliding groove. A first connection channel is provided for communicating the inside of each hydraulic cavity with the inside of the first hollow elastic member. A second spring is connected between the lower side of the piston plate and the lower side inside the hydraulic cavity.

[0013] Further technical solution: On one side of the upper part of the card slot, a frame body is fixedly arranged. On the other side of the upper part of the card slot, a second limiting block is fixedly arranged. Inside the frame body, two movable frames slide symmetrically up and down. In the middle of the inside of the frame body, there is a second connection channel communicating with the hydraulic cavity. Inside each of the two movable frames, a second sliding plate slides horizontally. On one side of each of the two second sliding plates, a clamping plate is rotatably arranged. On one side of the frame body close to the second limiting block, two openings are provided symmetrically up and down. A rotating shaft is rotatably connected to the middle parts of the two clamping plates through the two openings respectively.

[0014] Further technical solution: A third spring is connected between each of the two movable frames and the upper and lower sides inside the frame body respectively. On one side of the two clamping plates close to each other, a first rubber plate is fixedly arranged respectively.

[0015] Further technical solution: A fixed seat is fixedly arranged in the middle of the inside of the frame body. A second push rod slides inside the fixed seat. One end of the second push rod is fixedly provided with a second rubber plate.

[0016] Further technical solution: A telescopic connecting pipe is provided for communicating the inside of the fixed seat with the inside of each of the two movable frames respectively. A fourth spring is connected between one end of the second push rod and the inside of the fixed seat.

[0017] Further technical solution: Two positioning keys are fixedly arranged on the lower sides at both ends of the insulating housing. A long strip-shaped groove is provided in the middle of the convex part. A shielding sheet is arranged inside the long strip-shaped groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] A surface mount connector assembly based on an improved pin structure according to the present invention. Through the settings of the first elastic block, the second elastic block, the fourth elastic block, and the fifth elastic block, the current terminal moves upward from the lower side of the card slot into the insulating housing, and the first limiting portion moves upward to drive the slider to move upward in the chute. The upper side of the first elastic block is in sliding contact with the lower side inclined surfaces of the fifth elastic block and the fourth elastic block respectively, and the upper side of the second elastic block is in sliding contact with the lower side inclined surfaces of the fifth elastic block and the fourth elastic block respectively, so that the slider moves smoothly upward in the chute. Then, the inclined lower ends of the first elastic block are in plane contact with the inclined upper ends of the fifth elastic block and the fourth elastic block respectively, and the inclined lower ends of the second elastic block are in plane contact with the inclined upper ends of the fifth elastic block and the fourth elastic block respectively, so as to limit the downward movement of the slider, so as to facilitate the smooth upward movement and limit the fixation of the current terminal in the card slot. Through the settings of the first spring, the fixed block, the third elastic member, the third elastic block, and the second elastic member, when the slider moves downward in the chute and the inclined lower end of the first elastic block contacts the inclined upper end of the fourth elastic block, the first elastic member and the fixed block support the first elastic block, cooperate with the third elastic member and the fifth elastic block to support the fourth elastic block, and the third elastic block and the second elastic member support the fourth elastic block and the fifth elastic block, so as to facilitate the use of the first limiting component and the second limiting component to limit and fix the downward movement of the slider, and avoid the arbitrary movement of the current terminal in the card slot. Finally, through the settings of the second hollow elastic member and the sliding rod, when the slider moves upward to drive the first limiting component to move upward, the upward movement of the fixed block makes the upper side of the second hollow elastic member contact the upper side of the chute, so as to squeeze and deform the second hollow elastic member to squeeze the solution in the second hollow elastic member into the fixed block. The solution in the fixed block pushes the sliding rod and the movable block to move obliquely upward, and the oblique upward movement of the movable block drives the second elastic block to move upward, so that the contact area between the inclined lower end of the second elastic block and the inclined upper end of the fourth elastic block or the inclined upper end plane of the fifth elastic block increases, which is beneficial to improving the limiting and fixing effect between the first limiting component and the second limiting component, and thus can quickly and smoothly weld and fix the current terminal in the card slot.

[0020] An SMT connector assembly based on an improved pin structure of the present invention. Through the setting of the first slide plate, when the slider moves upward, it drives the first limiting component to move upward. A number of second limiting components are distributed at intervals along the inclined surface on one side of the first slide plate, and the distance between one side of the first slide plate and the slider gradually narrows from bottom to top. Thus, the contact area between the first limiting component moving upward and the number of second limiting components continuously increases, which is beneficial to promoting the smooth upward movement of the current terminal in the card slot and improving the limiting and fixing effect of the number of second limiting components on the first limiting component, and is beneficial to limiting and fixing the current terminal in the card slot. Further, through the setting of the first hollow elastic member, when the slider moves upward and contacts the lower end of the first push rod, the slider moving upward pushes the first push rod and the piston plate to move upward. The piston plate moving upward sends a part of the solution in the hydraulic chamber into the first hollow elastic member through the first connection channel, causing the first hollow elastic member to expand and push the first slide plate to move. The movement of the first slide plate drives a number of second limiting components to approach the first limiting component, thereby further increasing the contact area between the first limiting component and the second limiting components, so as to facilitate limiting and fixing the current terminal in the card slot and improving the efficiency of welding and fixing the current terminal in the card slot.

[0021] An SMT connector assembly based on an improved pin structure of the present invention. Through the setting of the movable frame, the clamping plate, and the first rubber plate, when the piston plate moves upward, another part of the solution in the hydraulic chamber enters the middle of the interior of the frame body through the second connection channel. The solution pushes the two movable frames to move away from each other up and down. One end of the clamping plate is rotatably connected to one side of the second slide plate, and in cooperation with the middle of the clamping plate being rotatably connected to the opening, the two movable frames moving away from each other up and down drive the two second slide plates to move away from each other up and down. Thus, the two clamping plates rotate around the two rotating shafts relative to each other, and the rotation of the two clamping plates drives the two first rubber plates to approach each other to clamp and fix the upper and lower sides of the second limiting part. Further, through the setting of the fixed seat, the second push rod, the second rubber plate, and the second limiting block, the two clamping plates rotate around the two rotating shafts relative to each other. Thus, the two second slide plates slide horizontally in the two movable frames respectively. The movement of the second slide plate sends the solution in the movable frame into the fixed seat through the telescopic connecting pipe. The solution in the fixed seat pushes the second push rod and the second rubber plate to move. The movement of the second rubber plate contacts one side of the second limiting part and cooperates with the other side of the second limiting part to contact the second limiting block, thereby clamping and fixing the two sides of the second limiting part, so as to facilitate clamping and fixing the second limiting part in multiple directions, which is beneficial to clamping and fixing the current terminal in the card slot and is beneficial to improving the quality of welding and fixing the current terminal in the card slot. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 Isometric structure schematic diagram of the present invention;

[0025] Figure 2 Front view structure schematic diagram of the present invention;

[0026] Figure 3 Is Figure 2 Cross-sectional structure schematic diagram at A-A in

[0027] Figure 4 Top view structure schematic diagram of the present invention;

[0028] Figure 5 Is Figure 4 Cross-sectional structure schematic diagram at B-B in

[0029] Figure 6 Is Figure 5 Partial enlarged structure schematic diagram at C in

[0030] Figure 7 Is Figure 5 Partial enlarged structure schematic diagram at D in

[0031] Figure 8 Is Figure 7 Partial enlarged structure schematic diagram at E in

[0032] Figure 9 Bottom view structure schematic diagram of the present invention.

[0033] Explanation of reference numerals:

[0034] Insulating housing 10, convex portion 11, elongated groove 12, shielding piece 13, positioning key 14, card slot 15, current terminal 16, chamfer 17, first limiting block 18, slider 19, first hollow elastic member 20, first slide plate 21, first limiting component 22, second limiting component 23, fixed block 24, slide rod 25, movable block 26, second hollow elastic member 27, first spring 28, first elastic block 29, second elastic block 30, first elastic member 31, third elastic block 32, second elastic member 33, fourth elastic block 34, fifth elastic block 35, third elastic member 36, hydraulic cavity 37, piston plate 38, first push rod 39, second spring 40, first connection channel 41, second connection channel 42, frame body 43, movable frame 44, second slide plate 45, opening 46, clamping plate 47, first rubber plate 48, third spring 49, second limiting block 50, fixed seat 51, second push rod 52, fourth spring 53, telescopic connecting pipe 54, second rubber plate 55, first limiting portion 56, pin portion 57, second limiting portion 58, chute 59, rotating shaft 60. Detailed implementation manners

[0035] The following further describes in detail the implementation manners of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0036] In the description of the present invention, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] As shown in the attached Figure 1 to the attached Figure 9 figures:

[0039] The present invention provides a surface mount connector assembly based on an improved pin structure.

[0040] Refer to the attached Figure 1 to the attached Figure 9 , including an insulating housing 10. There is a convex portion 11 in the middle of the interior of the insulating housing 10. A number of card slots 15 are spaced on both sides of the convex portion 11. A current terminal 16 is provided inside each card slot 15; the current terminal 16 includes a first limiting portion 56, a pin portion 57, and a second limiting portion 58. The second limiting portion 58 is fixed on the upper side of the first limiting portion 56, the pin portion 57 is fixed on the lower side of the first limiting portion 56. A chamfer 17 is provided on the upper side of one end of the pin portion 57. The second limiting portion 58 has a barb structure. On one side of the lower part of each card slot 15, there is a sliding groove 59. On the other side of the lower part of each card slot 15, a first limiting block 18 is fixedly provided. One side of the first limiting portion 56 is fixedly provided with a sliding block 19. The sliding block 19 slides vertically in the sliding groove 59. A first limiting component 22 is provided on one side of the sliding block 19. A first hollow elastic member 20 is provided on one side of the sliding groove 59. A first sliding plate 21 is provided on one side of the first hollow elastic member 20. A number of second limiting components 23 are provided on one side of the first sliding plate 21; the first limiting component 22 includes a fixing block 24. The fixing block 24 is fixedly inclined on one side of the sliding block 19. A sliding rod 25 slides inside the fixing block 24. The inclined upper end of the sliding rod 25 is fixedly provided with a movable block 26. A first elastic block 29 is fixedly provided on the lower side of the fixing block 24. A second elastic block 30 is fixedly provided on one side of the movable block 26; the second limiting component 23 includes a third elastic block 32. The third elastic block 32 is fixedly inclined on one side of the first sliding plate 21. A fourth elastic block 34 and a fifth elastic block 35 are fixedly provided on the upper side of the third elastic block 32.

[0041] Preferably, refer to the attached Figure 7 to the attached Figure 8 , a first elastic member 31 is connected between the upper side of the first elastic block 29 and the lower side of the second elastic block 30. The first elastic block 29 and the second elastic block 30 have the same inclined direction. The fourth elastic block 34 and the fifth elastic block 35 have the same inclined direction. The fourth elastic block 34 is located above the inclined fifth elastic block 35. The inclined lower end of the first elastic block 29 is in planar contact with the inclined upper end of the fourth elastic block 34. The upper side of the first elastic block 29 is in inclined contact with the lower side of the fourth elastic block 34. The inclined lower end of the second elastic block 30 is in planar contact with the inclined upper end of the fourth elastic block 34. The upper side of the second elastic block 30 is in inclined contact with the lower side of the fourth elastic block 34. The inclined lower end of the first elastic block 29 is in planar contact with the inclined upper end of the fifth elastic block 35. The upper side of the first elastic block 29 is in inclined contact with the lower side of the fifth elastic block 35. The inclined lower end of the second elastic block 30 is in planar contact with the inclined upper end of the fifth elastic block 35. The upper side of the second elastic block 30 is in inclined contact with the lower side of the fifth elastic block 35.

[0042] Preferably, refer to the attached Figure 7 to the attachedFigure 8 A second hollow elastic member 27 is connected between the upper side of the fixed block 24 and one side of the slider 19. The interior of the second hollow elastic member 27 is in communication with the interior of the fixed block 24. A first spring 28 is connected between the inclined lower end of the sliding rod 25 and the interior of the fixed block 24.

[0043] Preferably, referring to the appended Figure 7 to the appended Figure 8 A second elastic member 33 is connected between the lower side of the third elastic block 32 and one side of the first sliding plate 21. A third elastic member 36 is connected between the upper side of the fifth elastic block 35 and the lower side of the fourth elastic block 34. One side of the first sliding plate 21 has an inclined surface structure. A plurality of second limiting components 23 are distributed at intervals along the inclined surface on one side of the first sliding plate 21. The distance between one side of the first sliding plate 21 and the slider 19 gradually becomes narrower from bottom to top.

[0044] Preferably, referring to the appended Figure 7 One side of the lower part of each card slot 15 is provided with a hydraulic chamber 37. A piston plate 38 is vertically slidably arranged inside each hydraulic chamber 37. A first push rod 39 is fixedly arranged on the lower side of the piston plate 38. The lower end of each first push rod 39 extends into the interior of the sliding groove 59. Each hydraulic chamber 37 is in communication with the interior of the first hollow elastic member 20 through a first connection channel 41. A second spring 40 is connected between the lower side of the piston plate 38 and the lower side inside the hydraulic chamber 37.

[0045] Preferably, referring to the appended Figure 5 to the appended Figure 6 One side of the upper part of the card slot 15 is fixedly provided with a frame body 43. The other side of the upper part of the card slot 15 is fixedly provided with a second limiting block 50. Two movable frames 44 are symmetrically slidably arranged up and down inside the frame body 43. The middle part inside the frame body 43 is in communication with the hydraulic chamber 37 through a second connection channel 42. A second sliding plate 45 is horizontally slidably arranged inside each of the two movable frames 44. A clamping plate 47 is rotatably arranged on one side of each of the two second sliding plates 45. Two openings 46 are symmetrically arranged up and down on one side of the frame body 43 close to the second limiting block 50. A rotating shaft 60 is rotatably connected between the middle parts of the two clamping plates 47 and the two openings 46 respectively.

[0046] Preferably, referring to the appended Figure 6 A third spring 49 is connected between each of the two movable frames 44 and the upper and lower sides inside the frame body 43 respectively. A first rubber plate 48 is fixedly arranged on one side of each of the two clamping plates 47 close to each other.

[0047] Preferably, referring to the appended Figure 6 A fixed seat 51 is fixedly arranged in the middle of the interior of the frame body 43. A second push rod 52 is slidably arranged inside the fixed seat 51. A second rubber plate 55 is fixedly arranged at one end of the second push rod 52.

[0048] Preferably, referring to the appended Figure 6 , a telescopic connecting pipe 54 is provided in the interior of the fixing base 51 and is in communication with the interiors of the two movable frames 44 respectively. One end of the second push rod 52 is connected to the interior of the fixing base 51 and is provided with a fourth spring 53.

[0049] Preferably, referring to the appended Figure 1 to the appended Figure 2 , appended Figure 9 , two positioning keys 14 are fixedly provided on the lower sides of both ends of the insulating housing 10. A long strip-shaped groove 12 is provided in the middle of the convex portion 11, and a shielding sheet 13 is provided in the interior of the long strip-shaped groove 12.

[0050] Specific usage method of the present invention:

[0051] Usage method: During the process of welding a product, after the solder paste melts, it needs to flow uniformly along the outer shape of the pins. Therefore, the uniformity of the solder during the flowing process is relatively important, but it is inevitable that too much solder paste will be added. However, there is a chamfer 17 on the upper side of one end of the pin portion 57. The chamfer 17 is used to drain the solder paste, thereby reducing the solder remaining on the upper side of the pin portion 57 and avoiding the situation that adjacent two pin portions 57 are welded together, reducing the probability of bridging. Analyzing from the aspect of maintainability, when there are quality problems with the solder joints of the product completed by reflow soldering, either too much solder or too little solder, from the perspective of cost, it is necessary to manually repair the solder joints of the connector. When manually using a soldering iron to add or remove solder, adding or removing solder from the chamfered pins melts the tin faster than the right-angled pins, is more convenient to process, and is smoother when pulling the soldering iron. The right-angled pins will generate greater resistance. Therefore, chamfered pins are more convenient for the operator to repair.

[0052] Assembly method. First, the staff installs and fixes the shielding piece 13 in the long strip-shaped groove 12, and moves the current terminal 16 upward from the lower side of the card slot 15 into the insulating housing 10. The first limiting part 56 moves upward to drive the slider 19 to move upward in the sliding groove 59. The upper side of the first elastic block 29 is in sliding contact with the lower side inclined surfaces of the fifth elastic block 35 and the fourth elastic block 34 respectively, and the upper side of the second elastic block 30 is in sliding contact with the lower side inclined surfaces of the fifth elastic block 35 and the fourth elastic block 34 respectively, so that the slider 19 moves smoothly upward in the sliding groove 59. Then, the inclined lower ends of the first elastic block 29 are in plane contact with the inclined upper ends of the fifth elastic block 35 and the fourth elastic block 34 respectively, and the inclined lower ends of the second elastic block 30 are in plane contact with the inclined upper ends of the fifth elastic block 35 and the fourth elastic block 34 respectively, so as to limit the downward movement of the slider 19, so as to facilitate the smooth upward movement and limit the fixation of the current terminal 16 in the card slot 15. Among them, when the slider 19 moves downward in the sliding groove 59 and the inclined lower end of the first elastic block 29 contacts the inclined upper end of the fourth elastic block 34, the first elastic member 31 and the fixed block 24 support the first elastic block 29, and the third elastic member 36 and the fifth elastic block 35 support the fourth elastic block 34. Then, the third elastic block 32 and the second elastic member 33 support the fourth elastic block 34 and the fifth elastic block 35, so as to use the first limiting component 22 and the second limiting component 23 to limit and fix the downward movement of the slider 19, and prevent the current terminal 16 from moving arbitrarily in the card slot 15. One side of the first limiting part 56 uses the first limiting component 22 to contact the second limiting component 23 for limiting, and the other side of the first limiting part 56 uses the first limiting block 18 for limiting, so as to make the first limiting part 56 centered and limited in the card slot 15.

[0053] Secondly, the upward movement of the slider 19 drives the upward movement of the first limiting component 22. The upward movement of the fixed block 24 makes the upper side of the second hollow elastic member 27 contact the upper side of the sliding groove 59, so as to squeeze the second hollow elastic member 27. The second hollow elastic member 27 is squeezed and deformed, and the solution in the second hollow elastic member 27 is squeezed into the fixed block 24. The solution in the fixed block 24 pushes the sliding rod 25 and the movable block 26 to move obliquely upward. The oblique upward movement of the movable block 26 drives the upward movement of the second elastic block 30, so that the contact area between the inclined lower end of the second elastic block 30 and the inclined upper end of the fourth elastic block 34 or the fifth elastic block 35 increases, which is beneficial to improving the limiting and fixing effect between the first limiting component 22 and the second limiting component 23, so as to quickly and smoothly weld and fix the current terminal 16 in the card slot 15. Among them, the oblique upward movement of the sliding rod 25 stretches the first spring 28 to generate elastic force, so that under the elastic force of the first spring 28, the sliding rod 25 can move obliquely downward to reset.

[0054] Next, the upward movement of the slider 19 drives the upward movement of the first limiting component 22. A number of second limiting components 23 are distributed at intervals along the inclined surface on one side of the first slide plate 21, and the distance between one side of the first slide plate 21 and the slider 19 gradually narrows from bottom to top. Thus, the contact area between the upwardly moving first limiting component 22 and the number of second limiting components 23 continuously increases, which is conducive to promoting the smooth upward movement of the current terminal 16 in the card slot 15, and improving the limiting and fixing effect of the number of second limiting components 23 on the first limiting component 22, which is conducive to limiting and fixing the current terminal 16 in the card slot 15.

[0055] Then, the upward movement of the slider 19 contacts the lower end of the first push rod 39. The upward movement of the slider 19 pushes the first push rod 39 and the piston plate 38 upward. The upward movement of the piston plate 38 causes a part of the solution in the hydraulic chamber 37 to enter the first hollow elastic member 20 through the first connection channel 41, causing the first hollow elastic member 20 to expand and push the first slide plate 21 to move. The movement of the first slide plate 21 drives a number of second limiting components 23 to approach the first limiting component 22, thereby further increasing the contact area between the first limiting component 22 and the second limiting components 23, so as to facilitate limiting and fixing the current terminal 16 in the card slot 15 and improving the efficiency of welding and fixing the current terminal 16 in the card slot 15.

[0056] At the same time, the upward movement of the piston plate 38 causes another part of the solution in the hydraulic chamber 37 to enter the middle of the interior of the frame 43 through the second connection channel 42. The solution pushes the two movable frames 44 to move away from each other up and down. One end of the clamping plate 47 is rotatably connected to one side of the second slide plate 45, and in cooperation with the middle of the clamping plate 47 being rotatably connected to the opening 46, the two movable frames 44 moving away from each other up and down drive the two second slide plates 45 to move away from each other up and down. Thus, the two clamping plates 47 rotate around the two rotating shafts 60 respectively. The rotation of the two clamping plates 47 drives the two first rubber plates 48 to approach each other to clamp and fix the upper and lower sides of the second limiting portion 58. Among them, the two movable frames 44 moving away from each other up and down respectively compress the two third springs 49 to generate elastic forces. Thus, under the elastic forces of the two third springs 49, the two movable frames 44 can move closer to each other and reset.

[0057] Meanwhile, the two clamping plates 47 rotate relative to each other around the two rotating shafts 60 respectively, so that the two second sliding plates 45 slide horizontally in the two movable frames 44 respectively. The movement of the second sliding plates 45 causes the solution in the movable frames 44 to enter the fixed seat 51 through the telescopic connecting pipe 54. The solution in the fixed seat 51 pushes the second push rod 52 and the second rubber plate 55 to move. The movement of the second rubber plate 55 contacts one side of the second limiting portion 58, and the other side of the second limiting portion 58 contacts the second limiting block 50, so as to clamp and fix both sides of the second limiting portion 58, which is convenient for clamping and fixing the second limiting portion 58 in multiple directions, conducive to clamping and fixing the current terminal 16 in the clamping groove 15, and conducive to improving the quality of welding and fixing the current terminal 16 in the clamping groove 15.

[0058] Finally, after the current terminal 16 is fully limited and fixed in the clamping groove 15, the staff welds and fixes the current terminal 16 and the convex portion 11.

[0059] An SMT connector assembly based on an improved pin structure according to the present invention. Through the arrangement of the first elastic block 29, the second elastic block 30, the fourth elastic block 34, and the fifth elastic block 35, the current terminal 16 moves upward from the lower side of the card slot 15 into the insulating housing 10, and the first limiting portion 56 moves upward to drive the slider 19 to move upward in the sliding groove 59. The upper side of the first elastic block 29 is in sliding contact with the lower side inclined surfaces of the fifth elastic block 35 and the fourth elastic block 34 respectively, and the upper side of the second elastic block 30 is in sliding contact with the lower side inclined surfaces of the fifth elastic block 35 and the fourth elastic block 34 respectively, so that the slider 19 moves smoothly upward in the sliding groove 59. Then, the inclined lower ends of the first elastic block 29 are in plane contact with the inclined upper ends of the fifth elastic block 35 and the fourth elastic block 34 respectively, and the inclined lower ends of the second elastic block 30 are in plane contact with the inclined upper ends of the fifth elastic block 35 and the fourth elastic block 34 respectively, so as to limit the downward movement of the slider 19, facilitating the smooth upward movement and limiting and fixing of the current terminal 16 in the card slot 15. Through the arrangement of the first spring 28, the fixing block 24, the third elastic member 36, the third elastic block 32, and the second elastic member 33, when the slider 19 moves downward in the sliding groove 59 and the inclined lower end of the first elastic block 29 contacts the inclined upper end of the fourth elastic block 34, the first elastic member 31 and the fixing block 24 support the first elastic block 29, and the third elastic member 36 and the fifth elastic block 35 support the fourth elastic block 34, and the third elastic block 32 and the second elastic member 33 support the fourth elastic block 34 and the fifth elastic block 35, so as to utilize the first limiting component 22 and the second limiting component 23 to limit and fix the downward movement of the slider 19, preventing the current terminal 16 from moving arbitrarily in the card slot 15. Finally, through the arrangement of the second hollow elastic member 27 and the sliding rod 25, when the slider 19 moves upward to drive the first limiting component 22 to move upward, the fixing block 24 moves upward so that the upper side of the second hollow elastic member 27 contacts the upper side of the sliding groove 59, thereby squeezing and deforming the second hollow elastic member 27 to squeeze the solution in the second hollow elastic member 27 into the fixing block 24. The solution in the fixing block 24 pushes the sliding rod 25 and the movable block 26 to move obliquely upward, and the movable block 26 moving obliquely upward drives the second elastic block 30 to move upward, so that the contact area between the inclined lower end of the second elastic block 30 and the inclined upper end of the fourth elastic block 34 or the inclined upper end of the fifth elastic block 35 increases, which is beneficial to improving the limiting and fixing effect between the first limiting component 22 and the second limiting component 23, and thus the current terminal 16 can be quickly and smoothly welded and fixed in the card slot 15.

[0060] A surface mount connector assembly based on an improved pin structure of the present invention. Through the setting of the first slide plate 21, when the slider 19 moves upward, it drives the first limiting component 22 to move upward. A number of second limiting components 23 are distributed at intervals along the inclined surface on one side of the first slide plate 21, and the distance between one side of the first slide plate 21 and the slider 19 gradually becomes narrower from bottom to top. Thus, the contact area between the first limiting component 22 moving upward and the number of second limiting components 23 continuously increases, which is beneficial to promoting the stable upward movement of the current terminal 16 in the card slot 15, and improving the limiting and fixing effect of the number of second limiting components 23 on the first limiting component 22, which is beneficial to limiting and fixing the current terminal 16 in the card slot 15. Further, through the setting of the first hollow elastic member 20, when the slider 19 moves upward and contacts the lower end of the first push rod 39, the slider 19 moving upward pushes the first push rod 39 and the piston plate 38 to move upward. The piston plate 38 moving upward sends a part of the solution in the hydraulic chamber 37 into the first hollow elastic member 20 through the first connection channel 41, causing the first hollow elastic member 20 to expand and push the first slide plate 21 to move. The first slide plate 21 moving drives a number of second limiting components 23 to approach the first limiting component 22, thereby further increasing the contact area between the first limiting component 22 and the second limiting components 23, so as to facilitate limiting and fixing the current terminal 16 in the card slot 15 and improving the efficiency of welding and fixing the current terminal 16 in the card slot 15.

[0061] An SMT connector assembly based on an improved pin structure according to the present invention, through the settings of the movable frame 44, the clamping plate 47, and the first rubber plate 48, when the piston plate 38 moves upward, another part of the solution in the hydraulic chamber 37 enters the middle inside the frame body 43 through the second connection channel 42. The solution pushes the two movable frames 44 to move away from each other up and down. One end of the clamping plate 47 is rotatably connected to one side of the second sliding plate 45, and in cooperation with the middle part of the clamping plate 47 being rotatably connected to the opening 46, the two movable frames 44 moving away from each other up and down drive the two second sliding plates 45 to move away from each other up and down, so that the two clamping plates 47 rotate around the two rotating shafts 60 respectively. The rotation of the two clamping plates 47 drives the two first rubber plates 48 to move closer to each other to clamp and fix the upper and lower sides of the second limiting part 58. Further, through the settings of the fixed seat 51, the second push rod 52, the second rubber plate 55, and the second limiting block 50, the two clamping plates 47 rotate around the two rotating shafts 60 respectively, so that the two second sliding plates 45 slide horizontally in the two movable frames 44 respectively. The movement of the second sliding plate 45 makes the solution in the movable frame 44 enter the fixed seat 51 through the telescopic connecting pipe 54. The solution in the fixed seat 51 pushes the second push rod 52 and the second rubber plate 55 to move. The movement of the second rubber plate 55 contacts one side of the second limiting part 58, and the other side of the second limiting part 58 contacts the second limiting block 50, so as to clamp and fix the two sides of the second limiting part 58, which is convenient for clamping and fixing the second limiting part 58 in multiple directions, is beneficial to clamping and fixing the current terminal 16 in the clamping groove 15, and is beneficial to improving the quality of welding and fixing the current terminal 16 in the clamping groove 15.

[0062] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those of ordinary skill in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A surface mount connector assembly based on an improved pin structure, characterized in that: It comprises an insulating housing (10), wherein a convex portion (11) is provided in the middle of the insulating housing (10), a plurality of slots (15) are provided at intervals on both sides of the convex portion (11), and a current terminal (16) is provided inside each of the slots (15); The current terminal (16) comprises a first limiting portion (56), a pin portion (57), and a second limiting portion (58); the second limiting portion (58) is fixed to the upper side of the first limiting portion (56); the pin portion (57) is fixed to the lower side of the first limiting portion (56); a chamfer (17) is provided on the upper side of one end of the pin portion (57); the second limiting portion (58) is in the form of a barb structure; a sliding groove (59) is provided on one side of the lower part of each of the card slots (15); A first limiting block (18) is fixedly provided on the other side of the lower part, a sliding block (19) is fixedly provided on one side of the first limiting part (56), the sliding block (19) slides vertically in the sliding groove (59), a first limiting assembly (22) is provided on one side of the sliding block (19), a first hollow elastic member (20) is provided on one side of the sliding groove (59), a first sliding plate (21) is provided on one side of the first hollow elastic member (20), and a plurality of second limiting assemblies (23) are provided on one side of the first sliding plate (21); The first limiting assembly (22) comprises a fixed block (24), the fixed block (24) being fixed obliquely on one side of the sliding block (19), a sliding rod (25) being slidably provided inside the fixed block (24), a movable block (26) being fixedly provided at the oblique upper end of the sliding rod (25), a first elastic block (29) being fixedly provided at the lower side of the fixed block (24), and a second elastic block (30) being fixedly provided at one side of the movable block (26); The second limiting assembly (23) comprises a third elastic block (32), the third elastic block (32) is fixed obliquely on one side of the first slide plate (21), and a fourth elastic block (34) and a fifth elastic block (35) are fixedly arranged on the upper side of the third elastic block (32); A first elastic member (31) is connected between the upper side of the first elastic block (29) and the lower side of the second elastic block (30); the first elastic block (29) and the second elastic block (30) have the same inclination direction; the fourth elastic block (34) and the fifth elastic block (35) have the same inclination direction; the fourth elastic block (34) is located above the inclination of the fifth elastic block (35); the inclined lower end of the first elastic block (29) is in plane contact with the inclined upper end of the fourth elastic block (34); the upper side of the first elastic block (29) is in plane contact with the lower side inclined surface of the fourth elastic block (34); The inclined lower end of the second elastic block (30) contacts the inclined upper end plane of the fourth elastic block (34), the upper side of the second elastic block (30) contacts the lower inclined surface of the fourth elastic block (34), the inclined lower end of the first elastic block (29) contacts the inclined upper end plane of the fifth elastic block (35), the upper side of the first elastic block (29) contacts the lower inclined surface of the fifth elastic block (35), the inclined lower end of the second elastic block (30) contacts the inclined upper end plane of the fifth elastic block (35), and the upper side of the second elastic block (30) contacts the lower inclined surface of the fifth elastic block (35); A hydraulic chamber (37) is provided on one side of the lower part of each of the slots (15); a piston plate (38) is vertically slidably provided inside each of the hydraulic chambers (37); a first push rod (39) is fixedly provided on the lower side of the piston plate (38); the lower end of each of the first push rods (39) extends to the inside of the slide groove (59); each of the hydraulic chambers (37) is interconnected with the inside of the first hollow elastic member (20) and a first connecting channel (41) is provided; a second spring (40) is connected between the lower side of the piston plate (38) and the lower side of the inside of the hydraulic chamber (37).

2. A surface mount connector assembly based on an improved pin structure according to claim 1, characterized in that: A second hollow elastic member (27) is connected between the upper side of the fixed block (24) and one side of the sliding block (19); the interior of the second hollow elastic member (27) is communicated with the interior of the fixed block (24); and a first spring (28) is connected between the inclined lower end of the sliding rod (25) and the interior of the fixed block (24).

3. A surface mount connector assembly based on an improved pin structure according to claim 2, characterized in that: A second elastic member (33) is connected between the lower side of the third elastic block (32) and one side of the first slide plate (21); a third elastic member (36) is connected between the upper side of the fifth elastic block (35) and the lower side of the fourth elastic block (34); one side of the first slide plate (21) is in an inclined structure; a plurality of the second limiting components (23) are distributed at intervals along the inclined surface of one side of the first slide plate (21); and the distance between one side of the first slide plate (21) and the slider (19) gradually narrows from bottom to top.

4. A surface mount connector assembly based on an improved pin structure according to claim 1, characterized in that: A frame body (43) is fixedly provided on one side of the upper part of the card slot (15), and a second limit block (50) is fixedly provided on the other side of the upper part of the card slot (15). Two movable frames (44) are symmetrically slidably provided inside the frame body (43) in an upper and lower direction. A second connecting channel (42) is provided in the middle of the frame body (43) and is interconnected with the hydraulic chamber (37). A second slide plate (45) is horizontally slidably provided inside each of the two movable frames (44), and a clamping plate (47) is rotatably provided on one side of each of the two second slide plates (45). Two openings (46) are symmetrically provided on one side of the frame body (43) close to the second limit block (50), and a rotating shaft (60) is rotatably connected to the two openings (46) in the middle of each of the two clamping plates (47).

5. A surface mount connector assembly based on an improved pin structure according to claim 4, characterized in that: A third spring (49) is provided between the two movable frames (44) and the upper and lower sides of the frame body (43), and a first rubber plate (48) is fixedly provided on the sides of the two clamping plates (47) close to each other.

6. A surface mount connector assembly based on an improved pin structure according to claim 5, characterized in that: A fixing seat (51) is fixedly provided in the middle of the frame (43), a second push rod (52) is slidably provided inside the fixing seat (51), and a second rubber plate (55) is fixedly provided at one end of the second push rod (52).

7. A surface mount connector assembly based on an improved pin structure according to claim 6, characterized in that: The interior of the fixed seat (51) is interconnected with the interiors of the two movable frames (44) and is provided with a telescopic connecting pipe (54); one end of the second push rod (52) is interconnected with the interior of the fixed seat (51) and is provided with a fourth spring (53).

8. The surface mount connector assembly based on the improved pin structure according to claim 1, characterized in that: Two positioning keys (14) are fixedly provided at the lower sides of both ends of the insulating shell (10), a long strip groove (12) is provided in the middle of the protrusion (11), and a shielding sheet (13) is provided inside the long strip groove (12).

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