Firmly-connected connector pin

Abstract

A connector contact pin firm in connection comprises a contact pin body, the upper end of the contact pin body is provided with a first plugging end, the lower end of the contact pin body is provided with a second plugging end, the first plugging end is provided with a first limiting part, at least one first plugging part and a first plugging guide part, the second plugging end is connected with one end of the first limiting part, and the first plugging guide part is connected with the first limiting part. The first inserting part is of an oval structure and is provided with a through groove in a penetrating mode, the center of the through groove is consistent with the center of the first inserting part, a long shaft of the first inserting part is fixedly connected with the other end of the first limiting part, and the first inserting guiding part is fixedly connected with the other end of the long shaft of the first inserting part so that alignment of the first inserting part can be facilitated. The second plugging end is provided with a second limiting part, a second plugging part and a second guiding plugging part, the second limiting part is arranged on the side surface of the second plugging part so as to facilitate penetration and fixation of the second plugging part, and the second guiding plugging part is fixedly connected with the bottom of the second plugging part so as to facilitate alignment of the second plugging part. According to the utility model, the pin body is connected with the pin seat and the PCB without welding, the assembly process is simplified, the connection is firm, the signal transmission is reliable, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of connectors, in particular to a firmly connected connector pin. Background Art

[0002] Pin header is a type of connector. This type of connector is widely used in PCB circuit boards in electronics, electrical appliances, and instruments. Its function is to bridge the blocked or isolated circuits in the circuit and take on the task of current or signal transmission. In traditional technology, the pin header is inserted into the pin holder to form a pin connector, and then the pin connector is connected to the PCB board. When the pin is inserted into the conductive socket on the PCB board, welding is required to achieve the electrical connection between the pin header and the PCB board. It has the problems of complex structure and cumbersome process. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a connector pin with a firm connection, which has a reasonable structure, does not require welding when connected to a PCB board, simplifies the assembly process, and has a firm connection when used.

[0004] The technical solution adopted by the utility model to solve its technical problems is a connector pin with a firm connection, comprising a pin body, the upper end of the pin body is set as a first plug-in end, the lower end of the pin body is set as a second plug-in end, the first plug-in end is provided with a first limiting portion, a first plug-in portion, and a first guide portion, the second plug-in end is connected to one end of the first limiting portion, the first plug-in portion is provided with at least one, the first plug-in portion is an elliptical structure and is penetrated by a through groove, the center of the through groove is consistent with the center of the first plug-in portion, the long axis of the first plug-in portion is fixedly connected to the other end of the first limiting portion, the first guide portion is fixedly connected to the other end of the long axis of the first plug-in portion to facilitate the alignment of the first plug-in portion, the second limiting portion, the second plug-in portion, and the second guide portion are provided on the second plug-in end, the second limiting portion is arranged on the side of the second plug-in portion to facilitate the penetration of the second plug-in portion, and the second guide portion is fixedly connected to the bottom of the second plug-in portion to facilitate the alignment of the second plug-in portion.

[0005] Advantages of adopting the above technical solution: the present application adopts a method of setting an elliptical first plug-in portion on the first plug-in end, and the major axis of the elliptical first plug-in portion is consistent with the axial direction of the pin body, and a through groove that penetrates and coincides with the center is set on the first plug-in portion to make it elastic, so that when the first plug-in portion is squeezed by the notch of the PCB board, it is more likely to be thinner due to the squeezing force, and after the middle part is inserted into place, it can form a good connection with the PCB board and will not easily fall out of the notch, and the subsequent welding operation process can also be omitted. At the same time, the setting of the first limiting portion makes the parallelism of the pin body inserted and fixed on the PCB board better, and there is no need to set an additional block, which simplifies the assembly process to a certain extent. The setting of the first guide portion makes the first The first plug-in portion can slide into the slot of the PCB board more smoothly and is not prone to bending, thereby ensuring the service life of the first plug-in end. The second plug-in end adopts a structure of a second limiting portion, a second plug-in portion, and a second guiding portion. The second guiding portion can facilitate the second plug-in portion to be inserted into the socket of the socket row and is not prone to bending, thereby ensuring the service life of the second plug-in end. The setting of the second limiting portion enables the second plug-in end to form a firm assembly with the socket of the socket row, thereby ensuring the connection stability with the external plug and not prone to poor contact. At the same time, it also reduces the accuracy requirements of the second plug-in end. Therefore, the connection between the pin body and the pin seat, as well as the PCB board of this product does not require welding, and the connection is firm, the signal transmission is reliable, and the service life is good.

[0006] Furthermore, the second limiting portion includes an outer limiting portion and an inner limiting portion which are distributed up and down. The bottom of the outer limiting portion is set as a slope surface, and the inner limiting portion is tightly matched with the inner wall surface of the insertion hole.

[0007] The advantages of adopting the above technical solution are as follows: the second limiting part adopts the form of an outer limiting part and an inner limiting part. The outer limiting part can prevent the first plug-in part from being separated from the PCB board when the plug is pulled out, thereby ensuring the stable connection of the pin body. The setting of the slope surface can make it difficult for the outer limiting part to damage the needle seat when it contacts the surface of the needle seat, and it is more reasonable to use. The setting of the inner limiting part can make the penetration and installation of the second plug-in part relatively convenient, and the overall structural design is reasonable.

[0008] Furthermore, the inner limiting portions are distributed at intervals in the upper and lower parts, and the inner limiting portions are all configured as arc-shaped protrusions, and the bottom slope of the inner limiting portions is smaller than the top slope.

[0009] The advantages of adopting the above technical solution are as follows: by adopting the inner limit parts distributed at intervals in the upper and lower parts, the second plug-in end can be stably penetrated and fixed, and it is not easy to be skewed, thereby ensuring the good connection between the pin body and the terminal of the plug and the PCB board, and the inner limit part is set to be an arc-shaped protrusion with a larger bottom slope. During insertion, the pin body will be more easily inserted along the direction of the smaller slope of the inner limit part, and when the pin body is inserted into place, due to the larger slope at the top of the inner limit part, when the pin body is subjected to external force to move in the opposite direction, the pin body will be stuck, so that the pin body cannot move forward and backward, and has a very stable fixing effect. The pin body structure is reasonably designed and has a good electrical connection effect.

[0010] Furthermore, a thickened wall is provided on the side wall surface of the second plug-in portion, the thickened wall is connected to the bottom of the outer limiting portion, and the width of the thickened wall is 0.11 mm to 0.2 mm.

[0011] The advantages of adopting the above technical solution are as follows: by arranging a thickened wall of appropriate thickness at the position of the second plug-in part below the outer limiting part, the use strength of the outer limiting part is higher and the limiting effect of the outer limiting part is better.

[0012] Furthermore, the first inserting guide portion and the second inserting guide portion are both configured as trapezoidal frustums with gradually decreasing thickness and width.

[0013] Advantages of the above technical solution: Compared with a trapezoidal structure with gradually decreasing thickness or width, the use of a trapezoidal cone has a better guiding effect of the first and second guiding parts. Therefore, the connection between the PCB board and the external plug and the pin body is more convenient and faster, and the structural design is reasonable.

[0014] Furthermore, the pin body is formed by bending a metal plate twice, and its outline is L-shaped. The short arm of the L-shape is the first plug-in end, and the long arm of the L-shape is the second plug-in end. The bending angle of the bend, the edge of the first plug-in part, and the connection between the first plug-in part and the first limiting part are all rounded.

[0015] Advantages of the above technical solution: the pin body is bent into an inverted L-shaped structure, so the first plug-in end and the second plug-in end are bent at 90°, so that the pin body realizes a horizontal structure after being used on the needle holder. The needle holder with the pin body is relatively smaller in size and can better adapt to the miniaturization trend of modern electronic products. The corresponding position of the first plug-in end is rounded to make the connection with the PCB board safer and the structural design is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the pin body structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the matching structure of the pin body and the pin seat of the utility model.

[0018] In the figure: 1-pin body, 2-first plug-in end, 3-second plug-in end, 4-first limiting portion, 5-first plug-in portion, 6-first guide portion, 7-through groove, 8-second limiting portion, 9-second plug-in portion, 10-second guide portion, 11-outer limiting portion, 12-inner limiting portion, 13-thickened wall. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the utility model and / or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0020] See also Figure 1 to Figure 2 As shown, a firmly connected connector pin includes a pin body 1, the upper end of the pin body 1 is set as a first plug end 2, the lower end of the pin body 1 is set as a second plug end 3, the first plug end 2 is electrically connected to the PCB board, and the second plug end 3 is electrically connected to the terminal in the external plug.

[0021] In this embodiment, the first plug end 2 is provided with a first limiting portion 4, a first plug portion 5, and a first guide portion 6, the second plug end 3 is connected to one end of the first limiting portion 4, the first plug portion 5 can be one or multiple plug portions arranged at intervals in the horizontal direction, and the first plug portion 5 is an elliptical structure, that is, the shape of the first plug portion 5 is a structure with narrow ends and a wide middle, a through groove 7 is penetrated through the first plug portion 5, and the center of the through groove 7 is consistent with the center of the first plug portion 5, so that the first plug portion 5 has better elasticity, and the long axis of the first plug portion 5 is fixedly connected The other end of the first limiting portion 4, that is, the long axis of the first plug-in portion 5 is arranged along the plug-in direction, and the first guide portion 6 is fixedly connected to the other end of the long axis of the first plug-in portion 5 to facilitate the alignment of the first plug-in portion 5. The first plug-in end 2 is provided with an elliptical first plug-in portion 5, and the long axis of the elliptical first plug-in portion 5 is consistent with the axial direction of the pin body 1, and a through groove 7 penetrating and coinciding with the center is provided on the first plug-in portion 5 to make it elastic, so that when the first plug-in portion 5 is squeezed by the notch of the PCB board, it is easier to be squeezed and become thinner, and when After the middle part is inserted into place, it can form a good connection with the PCB board and will not easily fall out of the slot, and the subsequent welding operation process can also be omitted. At the same time, the width of the first limiting portion 4 is greater than the width of the first plug-in portion 5. The setting of the first limiting portion 4 makes the parallelism of the pin body 1 fixed on the PCB board better, and there is no need to set an additional block, which simplifies the assembly process to a certain extent. The setting of the first guide portion 6 allows the first plug-in portion 5 to slide into the slot of the PCB board more smoothly. More specifically, the first guide portion 6 can be set to gradually increase in thickness and width. The first guide plug part 6 is a decreasing trapezoidal cone, and the inclination angle between each side surface and the vertical surface is set between 20° and 25°. In this way, relative to the trapezoidal structure with gradually decreasing thickness or width, the first guide plug part 6 is configured in a trapezoidal cone manner. Each side surface of the first guide plug part 6 can form a guiding contact with the wall surface of the slot on the PCB board, and the guiding effect is better, and it is not easy to bend, thereby ensuring the service life of the first plug-in end 2. Therefore, by providing the first plug-in end 2 with the above structure, the connection between the PCB board and the pin body 1 is more convenient and faster, and the structural design is reasonable.

[0022] In this embodiment, the second plug-in end 3 is provided with a second limiting portion 8, a second plug-in portion 9, and a second guide portion 10. The second limiting portion 8 is arranged on the side of the second plug-in portion 9 to facilitate the insertion of the second plug-in portion 9. The second guide portion 10 is fixedly connected to the bottom of the second plug-in portion 9 to facilitate the alignment of the second plug-in portion 9. The second plug-in end 3 adopts the structure of the second limiting portion 8, the second plug-in portion 9, and the second guide portion 10, and the second guide portion 10 can also be set to a trapezoidal frustum with a gradually decreasing thickness and width. At the same time, the inclination angle between each side surface and the vertical surface is set between 10° and 15°. In this way, relative to the trapezoidal structure with a gradually decreasing thickness or width, the trapezoidal frustum is adopted. , each side surface of the second guide plug portion 10 can form a guiding contact with the notch wall of the external plug, and the second guide plug portion 10 can facilitate the second plug portion 9 to be inserted into the socket of the socket row, with a better guiding effect and not prone to bending, thereby ensuring the service life of the second plug terminal 3. The setting of the second limiting portion 8 enables the second plug terminal 3 to form a firm assembly with the socket of the socket row on the needle seat, thereby ensuring the connection stability with the external plug and not prone to poor contact. At the same time, the accuracy requirement of the second plug terminal 3 is also reduced. Therefore, the connection between the pin body 1 and the needle seat, as well as the PCB board of this product does not require welding, and the connection is firm, the signal transmission is reliable, and the service life is good.

[0023] In this embodiment, the second limiting portion 8 includes an outer limiting portion 11 and an inner limiting portion 12 distributed up and down. The outer limiting portion 11 is relatively located on the outer side of the jack row of the needle seat and the bottom is set to a slope surface. The inner limiting portion 12 is tightly matched with the inner wall surface of the jack of the jack row of the needle seat. The second limiting portion 8 adopts the outer limiting portion 11 and the inner limiting portion 12. When the external plug is pulled out of the needle seat with the pin body 1, the pin body 1 is subjected to force. At this time, the outer limiting portion 11 can form a contact limit with the surface of the pin seat jack row, thereby preventing the first plug-in portion 5 from being separated from the PCB board. Therefore, the connection stability between the pin body 1 and the PCB board is high. The setting of the slope surface can make the outer limiting portion 11 less likely to damage the needle seat when it contacts the surface of the needle seat when the plug-in and pull-out of the external plug drives the pin body 1 to move. The use of the pin body 1 is more reasonable. The setting of the inner limiting portion 12 can make the penetration and installation of the second plug-in portion 9 relatively convenient, and the overall structural design is reasonable.

[0024] In this embodiment, the inner limiting parts 12 are distributed in an upper and lower interval to cooperate with the inner wall of the jack of the jack row of the needle seat. More specifically, two pairs of inner limiting parts 12 are provided. By adopting the inner limiting parts 12 distributed in an upper and lower interval, corresponding support cooperation is formed with the inner wall of the jack of the jack row of the needle seat, so that the second plug-in end 3 can be stably penetrated, the connection between the pin body 1 and the needle seat is more stable, and the pin body 1 is not prone to skew, which ensures the good connection between the pin body 1 and the terminal of the plug and the PCB board. The inner limiting parts 12 are all set as arc-shaped protrusions, and the inner limiting parts 12 are arranged in an arc-shaped protrusion. The bottom slope of the part 12 is smaller than the top slope, and the inner limiting part 12 is set to be an arc-shaped protrusion with a larger bottom slope. During insertion, the pin body 1 will be more easily inserted along the direction with a smaller slope of the inner limiting part 12. When the pin body 1 is inserted into place, due to the larger slope of the top of the inner limiting part 12, when the pin body 1 is subjected to an external force to move in the opposite direction, the pin body 1 will be stuck. With the cooperation of the outer limiting part 11, the pin body 1 can be prevented from moving forward and backward, which has a very stable fixing effect. The pin body 1 has a reasonable structural design and a good electrical connection effect.

[0025] In this embodiment, a thickened wall 13 is further provided on the side wall surface of the second plug-in portion 9, and the thickened wall 13 is connected to the bottom of the outer limit portion 11. The width of the thickened wall 13 is 0.11mm to 0.2mm. It should be noted that the width of the second plug-in portion 9 of this product is 0.65mm. Therefore, by arranging a thickened wall 13 of appropriate thickness at the position of the second plug-in portion 9 below the outer limit portion 11, the use strength of the outer limit portion 11 is higher, and the limiting effect of the outer limit portion 11 will be better.

[0026] In this embodiment, the pin body 1 is formed by bending a metal plate twice, and its outline is L-shaped. The short arm of the L-shape is the first plug-in end 2, and the long arm of the L-shape is the second plug-in end 3. The bending angle at the bending point, the edge of the first plug-in portion 5, and the connection between the first plug-in portion 5 and the first limiting portion 4 are all rounded. The pin body 1 is bent to form an inverted L-shaped structure, so the first plug-in end 2 and the second plug-in end 3 are bent at 90°, so that the pin body 1 realizes a horizontal structure after being used on the needle holder. The needle holder with the pin body 1 is relatively smaller in size and can better adapt to the miniaturization trend of modern electronic products. The corresponding position of the first plug-in end 2 is rounded to make the connection with the PCB board safer and the structural design is reasonable.

[0027] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A firmly connected connector pin, comprising a pin body (1), wherein the upper end of the pin body (1) is set as a first plug end (2), and the lower end of the pin body (1) is set as a second plug end (3), characterized in that: The first plug-in end (2) is provided with a first limiting portion (4), a first plug-in portion (5), and a first plug-in guide portion (6); the second plug-in end (3) is connected to one end of the first limiting portion (4); the first plug-in portion (5) is provided with at least one; the first plug-in portion (5) is an elliptical structure and is provided with a through groove (7); the center of the through groove (7) is consistent with the center of the first plug-in portion (5); the long axis of the first plug-in portion (5) is fixedly connected to the other end of the first limiting portion (4); The first guide portion (6) is fixedly connected to the other end of the long axis of the first plug-in portion (5) to facilitate the alignment of the first plug-in portion (5); the second plug-in end (3) is provided with a second limiting portion (8), a second plug-in portion (9), and a second guide portion (10); the second limiting portion (8) is arranged on the side of the second plug-in portion (9) to facilitate the insertion and fixing of the second plug-in portion (9); the second guide portion (10) is fixedly connected to the bottom of the second plug-in portion (9) to facilitate the alignment of the second plug-in portion (9).

2. A firmly connected connector pin according to claim 1, characterized in that: The second limiting portion (8) comprises an outer limiting portion (11) and an inner limiting portion (12) which are distributed up and down, the bottom of the outer limiting portion (11) is set as a slope surface, and the inner limiting portion (12) is tightly matched with the inner wall surface of the insertion hole.

3. A firmly connected connector pin according to claim 2, characterized in that: The inner limiting portions (12) are distributed at intervals up and down, and the inner limiting portions (12) are all configured as arc-shaped protrusions, and the bottom slope of the inner limiting portions (12) is smaller than the top slope.

4. A firmly connected connector pin according to claim 2, characterized in that: A thickened wall (13) is also provided on the side wall surface of the second plug-in portion (9), the thickened wall (13) is connected to the bottom of the outer limiting portion (11), and the width of the thickened wall (13) is 0.11 mm to 0.2 mm.

5. A firmly connected connector pin according to claim 1, characterized in that: The first inserting guide portion (6) and the second inserting guide portion (10) are both configured as trapezoidal frustums with gradually decreasing thickness and width.

6. A firmly connected connector pin according to claim 1, characterized in that: The plug pin body (1) is formed by bending a metal plate twice, and has an L-shaped profile. The short arm of the L-shape is the first plug end (2), and the long arm of the L-shape is the second plug end (3). The bending angle at the bend, the edge of the first plug portion (5), and the connection between the first plug portion (5) and the first limit portion (4) are all rounded.

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