IGBT (Insulated Gate Bipolar Translator) pin convenient to plug and unplug

Abstract

The utility model discloses an IGBT pin convenient to plug and pull, relates to the technical field of IGBT pins, and aims to solve the problems that the conventional IGBT pin can be firmly plugged through an arranged extrusion deformation structure, but the pin can be pulled out with a relatively large force in the pulling-out process, so that the pin is deformed and cannot be used due to an excessively large force. Comprising a needle rod, one end of the needle rod is provided with an end base, the other end of the needle rod is provided with an inserting needle head, and the inserting needle head and the needle rod are of an integrated structure; the soldering tin bases are arranged on the outer wall of the lower end of the end base, the six soldering tin bases and the end base are of an integrated structure, flow guide inner cavities are formed in the soldering tin bases, and the flow guide inner cavities and the soldering tin bases are of an integrated structure; and the internal connection square grooves are formed in the needle rod, the number of the internal connection square grooves is two, and expansion square blocks are movably arranged in the two internal connection square grooves.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT pins, in particular to an IGBT pin which is easy to plug and unplug. Background Art

[0002] The IGBT pin is a quick-plug structure used to realize the modular connection of IGBT. Generally, one end of the IGBT pin is soldered to the circuit board through soldering, and the other end is used to plug and cooperate with the connecting mechanism, so that the circuit board can be plugged and connected with the connecting mechanism.

[0003] For example, the announcement number is: CN214176268U (named as an IGBT pin that is easy to plug and unplug), which includes a needle rod and a base, a plug hole is provided on the top of the base, and the bottom of the needle rod is inserted and installed in the plug hole; the needle rod is an integrated structure, a guide head is provided on the top of the needle rod, and a walnut-shaped through hole is provided above the needle rod, and the walnut-shaped through hole is arranged close to the guide head. The needle rods on the left and right sides of the walnut-shaped through hole constitute two groups of arc plates bent outward, and the outer side surfaces of the arc plates on both sides are respectively arranged on the outer side of the outer wall of the needle rod. By arranging the walnut-shaped through hole above the needle rod, the needle rod at this place constitutes an arc plate bent outward, and the outer side surface of the arc plate is on the outer side of the outer wall of the needle rod, so that the two groups of relative arc plates can be used to deform and squeeze during the needle rod plugging process, so that the plugging firmness and stability are good, ensuring that a certain force is required to pull out after plugging, improving the stability and firmness of the pin, and at the same time, the arc plate has a certain deformation ability, which effectively ensures the stability of use.

[0004] The above-mentioned IGBT pin is firmly plugged in by assisting the pin with the extrusion deformation structure, but a large force is required to pull it out during the removal process, resulting in the problem that the pin is deformed and can no longer be used due to excessive force. For this reason, we provide an IGBT pin that is easy to plug in and out. Utility Model Content

[0005] The purpose of the utility model is to provide an IGBT pin that is easy to plug and unplug, so as to solve the problem in the prior art that the IGBT pin is firmly plugged in by means of an extrusion deformation structure, but a large force is required to pull it out during the extraction process, resulting in excessive force causing the pin to be deformed and unable to be used.

[0006] To achieve the above object, the utility model provides the following technical solutions: an IGBT plug that is easy to plug and unplug, comprising a pin rod, one end of the pin rod is provided with an end seat, the other end of the pin rod is provided with a plug-in pin, and the plug-in pin and the pin rod are an integrated structure;

[0007] Also includes:

[0008] A solder seat, which is arranged on the outer wall of the lower end of the end seat, and six solder seats are arranged, and the six solder seats are all integrated with the end seat, and a flow guide cavity is arranged inside the solder seat, and the flow guide cavity and the solder seat are integrated;

[0009] An inner square groove is arranged inside the needle rod, two inner square grooves are provided, and expansion blocks are movably arranged inside the two inner square grooves;

[0010] The load-bearing inner cavity is arranged inside the end seat, and an extended inner rod is arranged inside the load-bearing inner cavity. The extended inner rod and the load-bearing inner cavity are an integrated structure. An inner rod through hole is arranged at the connecting movable position of the extended inner rod and the load-bearing inner cavity, and the inner rod through hole is connected to the interior of the load-bearing inner cavity.

[0011] Preferably, a receiving cavity is provided at the inner center position of the inscribed square groove, a return spring is provided inside the receiving cavity, and both ends of the return spring are respectively fixedly connected to the receiving cavity and the expansion block by nail-free glue.

[0012] Preferably, a solder injection port is provided on the top of the terminal seat, and the solder injection port is connected to the interior of the guide cavity.

[0013] Preferably, an anti-slip end block is provided at one end of the extended inner rod, the anti-slip end block and the extended inner rod are an integral structure, and the size of the anti-slip end block is larger than the caliber of the inner rod perforation.

[0014] Preferably, a pull ring plate is provided on the outer wall of the needle rod, and the pull ring plate and the needle rod are an integral structure.

[0015] Preferably, a limiting block is provided on one side outer wall of the expansion block, and the limiting block and the expansion block are an integral structure.

[0016] Preferably, the size of the expansion block is equal to the volume of the inscribed square groove.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model inserts the plug-in needle into the interior of the connecting mechanism, and during the plug-in process, presses the expansion block into the interior of the inner square groove. After the plug-in needle is plugged in place, the expansion block is released, so that the restoring force of the reset spring pushes the expansion block downward, thereby firmly connecting the needle rod to the socket position of the connecting mechanism. The limit card block can serve as a pressing handle, and can also be used as a limit for plug-in installation, so that the expansion block is always located inside the socket position. When pulling out, it only needs to press the expansion block again to contact the expanded and tight state, so that the pin can be quickly pulled out, which overcomes the problem that the existing IGBT pin uses the extrusion deformation structure to assist the pin to be firmly plugged in, but a large force is required to pull it out during the pull-out process, resulting in excessive force causing the pin to be deformed and unable to be used again.

[0019] By connecting the terminal seat to the circuit board in the form of solder, the molten solder liquid is injected into the guide cavity inside the solder seat through the solder injection port during the soldering process, and finally the solder liquid solidifies inside the guide cavity, thereby fixing the solder seat and the circuit board with solder, which improves the firmness of the solder compared to traditional bonding solder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the IGBT pin that is easy to plug and unplug according to the utility model;

[0021] Figure 2 This is a schematic diagram of the connection structure between the needle bar and the end seat of the utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the expansion block and the needle rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the soldering seat of the utility model;

[0024] In the figure: 1. needle rod; 2. end seat; 3. pull ring plate; 4. solder seat; 5. solder injection port; 6. internal square groove; 7. expansion block; 8. limit card block; 9. plug-in needle; 10. extended inner rod; 11. load-bearing inner cavity; 12. anti-drop end block; 13. inner rod perforation; 14. storage cavity; 15. reset spring; 16. guide cavity. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] See also Figure 1-4The utility model provides an embodiment: an IGBT plug pin that is easy to plug and unplug, comprising a pin rod 1, one end of the pin rod 1 is provided with a terminal seat 2, the other end of the pin rod 1 is provided with a plug pin 9, and the plug pin 9 and the pin rod 1 are an integrated structure;

[0027] Also includes:

[0028] A solder seat 4 is arranged on the outer wall of the lower end of the end seat 2. Six solder seats 4 are arranged. The six solder seats 4 are all integrated with the end seat 2. A flow guiding cavity 16 is arranged inside the solder seat 4. The flow guiding cavity 16 is integrated with the solder seat 4.

[0029] An inner square groove 6 is arranged inside the needle rod 1. Two inner square grooves 6 are provided, and expansion blocks 7 are movably arranged inside the two inner square grooves 6.

[0030] The bearing inner cavity 11 is arranged inside the end seat 2, and an extended inner rod 10 is arranged inside the bearing inner cavity 11. The extended inner rod 10 and the bearing inner cavity 11 are an integrated structure. An inner rod through hole 13 is arranged at the connecting movable position of the extended inner rod 10 and the bearing inner cavity 11. The inner rod through hole 13 is connected to the interior of the bearing inner cavity 11.

[0031] When in use, insert the plug-in needle into the interior of the connecting mechanism. During the plug-in process, press the expansion block into the interior of the inner square groove. After the plug-in needle is plugged in place, release the expansion block so that the restoring force of the reset spring pushes the expansion block downward, thereby fastening the needle rod to the socket position of the connecting mechanism. The limit card block can serve as a pressing handle or as a limit for plug-in installation, so that the expansion block is always located inside the socket position. When pulling out, you only need to press the expansion block again to contact the expanded and tight state, which is convenient for the plug-in needle to be pulled out quickly.

[0032] See also Figure 3 A receiving cavity 14 is provided at the inner center position of the inscribed square groove 6, and a return spring 15 is provided inside the receiving cavity 14. The two ends of the return spring 15 are respectively glued and fixedly connected with the receiving cavity 14 and the expansion block 7 by nail-free glue. The receiving cavity 14 provided at the inner center position of the inscribed square groove 6 plays the role of storing the return spring 15 in the contracted state.

[0033] See also Figure 4 A solder injection port 5 is provided at the top of the terminal seat 2, and the solder injection port 5 is connected to the interior of the guide cavity 16. The solder injection port 5 provided at the top of the terminal seat 2 serves to facilitate the injection of solder liquid into the interior of the terminal seat 2.

[0034] See also Figure 2An anti-dropout end block 12 is provided at one end of the extended inner rod 10. The anti-dropout end block 12 and the extended inner rod 10 are an integrated structure. The size of the anti-dropout end block 12 is larger than the diameter of the inner rod through hole 13. The anti-dropout end block 12 provided at one end of the extended inner rod 10 plays a role of limiting and preventing dropout.

[0035] See also Figure 1 A pull ring plate 3 is arranged on the outer wall of the needle rod 1. The pull ring plate 3 and the needle rod 1 are an integral structure. The pull ring plate 3 arranged on the outer wall of the needle rod 1 plays a role in assisting the pin to be pulled out.

[0036] See also Figure 2 A limit block 8 is arranged on one side outer wall of the expansion block 7. The limit block 8 and the expansion block 7 are an integral structure. The limit block 8 arranged on one side outer wall of the expansion block 7 plays a role in limiting the insertion of the pin and the connecting mechanism.

[0037] See also Figure 3 , the size of the expansion block 7 is equal to the volume of the inscribed square groove 6.

[0038] Working principle: When in use, the terminal seat 2 is connected to the circuit board in the form of solder. During the soldering process, the molten solder liquid is injected into the guide cavity 16 inside the solder seat 4 through the solder injection port 5. Finally, the solder liquid solidifies inside the guide cavity 16, thereby fixing the solder seat 4 and the circuit board with solder. Compared with the traditional laminating solder, the firmness of the solder is improved. After the connection is completed, the plug-in needle 9 is inserted into the interior of the connecting mechanism. During the plug-in process, the expansion block 7 is pressed into the interior of the inner square groove 6. After the plug-in needle 9 is plugged in place, the expansion block 7 is released to allow the reset spring to The restoring force of the spring 15 pushes the expansion block 7 downward, thereby firmly connecting the needle rod 1 with the socket position of the connecting mechanism. The limit block 8 can serve as a pressing handle, and can also be used as a limit for plug-in installation, so that the expansion block 7 is always located inside the socket position. When pulling out, it is only necessary to press the expansion block 7 again to contact the expanded and tight state, so that the pin can be quickly pulled out. By extending the anti-detachment movable connection between the inner rod 10 and the load-bearing inner cavity 11, the length of one end of the pin can be extended, so that the pin can better meet the plug-in distance, completing the use of the IGBT pin that is easy to plug and unplug.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An IGBT plug pin that is easy to plug and unplug, comprising a pin rod (1), one end of the pin rod (1) being provided with an end seat (2), the other end of the pin rod (1) being provided with a plugging pin (9), the plugging pin (9) and the pin rod (1) being an integral structure; It is characterized in that Also includes: A solder seat (4) disposed on the outer wall of the lower end of the end seat (2), six solder seats (4) are provided, the six solder seats (4) are all integrally formed with the end seat (2), and a flow guide cavity (16) is provided inside the solder seat (4), the flow guide cavity (16) and the solder seat (4) are integrally formed with each other; An inscribed square groove (6) is arranged inside the needle rod (1), two inscribed square grooves (6) are provided, and expansion blocks (7) are movably arranged inside the two inscribed square grooves (6); A bearing inner cavity (11) is arranged inside the end seat (2), and an extended inner rod (10) is arranged inside the bearing inner cavity (11), the extended inner rod (10) and the bearing inner cavity (11) are an integrated structure, an inner rod through hole (13) is arranged at a connecting movable position between the extended inner rod (10) and the bearing inner cavity (11), and the inner rod through hole (13) is connected to the inside of the bearing inner cavity (11).

2. The IGBT plug-in pin that is easy to plug and unplug according to claim 1, characterized in that: A receiving cavity (14) is provided at the inner center position of the inscribed square groove (6), a return spring (15) is provided inside the receiving cavity (14), and two ends of the return spring (15) are respectively glued and fixedly connected to the receiving cavity (14) and the expansion block (7) by nail-free glue.

3. The IGBT plug-in pin that is easy to plug and unplug according to claim 1, characterized in that: A solder injection port (5) is provided on the top of the terminal seat (2), and the solder injection port (5) is communicated with the interior of the guide cavity (16).

4. The IGBT plug-in pin that is easy to plug and unplug according to claim 1, characterized in that: An anti-slip end block (12) is provided at one end of the extended inner rod (10); the anti-slip end block (12) and the extended inner rod (10) are an integral structure; and the size of the anti-slip end block (12) is larger than the diameter of the inner rod through hole (13).

5. The IGBT plug-in pin that is easy to plug and unplug according to claim 1, characterized in that: A pull ring plate (3) is provided on the outer wall of the needle rod (1), and the pull ring plate (3) and the needle rod (1) are an integral structure.

6. The IGBT pin that is easy to plug and unplug according to claim 1, characterized in that: A limit block (8) is provided on one side outer wall of the expansion block (7), and the limit block (8) and the expansion block (7) are an integral structure.

7. The IGBT plug-in pin that is easy to plug and unplug according to claim 1, characterized in that: The size of the expansion block (7) is equal to the volume of the inscribed square groove (6).

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