Electrical connector

Abstract

The present invention discloses an electrical connector, including a base, a connecting seat and a limiting member, wherein the base is provided with a snap-in groove and a limiting groove. The connecting seat has a snap-in portion and a clearance hole, wherein the snap-in portion is snap-in with the snap-in groove to limit the movement of the connecting seat along the through direction of the clearance hole, and the clearance hole is arranged corresponding to the limiting groove. The limiting member is movably matched with the clearance hole and can be inserted into the limiting groove to limit the movement of the connecting seat along a direction perpendicular to the through direction of the clearance hole. The technical solution of the present invention can improve the connection stability of the electrical connector.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical components, and in particular to an electrical connector. Background Art

[0002] An electrical connector is an electromechanical component that enables circuit connection and disconnection. In our daily lives, connectors are widely used, and connectors of various structures have appeared one after another. Current electrical connectors mainly include a base and a connecting seat for mounting conductive terminals. The base is also provided with a conductive member. By mounting the conductive terminal on the connecting seat and then connecting the connecting seat to the base, the conductive member is electrically connected to the conductive terminal. In the current connection method between the connecting seat and the base, an elastic clip is mainly provided on the connecting seat, and the connecting seat is clipped to the base through the elastic clip. However, in this method, the elastic clip is easily deformed and separated from the base, the fixation is not reliable enough, and the connection stability is poor. Summary of the invention

[0003] The main purpose of the present invention is to provide an electrical connector, aiming to improve connection stability.

[0004] To achieve the above object, the electrical connector provided by the present invention comprises:

[0005] A base, wherein the base is provided with a clamping groove and a limiting groove;

[0006] A connecting seat, comprising a clamping portion and a clearance hole, wherein the clamping portion is clamped with the clamping slot to limit the movement of the connecting seat along the through direction of the clearance hole, and the clearance hole is arranged corresponding to the limiting slot; and

[0007] The limiting member is movably matched with the clearance hole and can be inserted into the limiting groove to limit the movement of the connecting seat in a direction perpendicular to the through direction of the clearance hole.

[0008] Optionally, the limiting groove has an insertion opening along the through direction of the clearance hole, and the snap-in groove has a card interface. The card interface and the opening direction of the insertion opening form a preset angle, and the preset angle is greater than 0° and less than 180°. The snap-in portion snaps into the snap-in groove from the card interface so that the clearance hole corresponds to the insertion opening.

[0009] Optionally, the base includes a connecting portion and a mounting protrusion arranged on the connecting portion, the limiting groove is arranged on the connecting portion, and the insertion port faces the mounting protrusion, the mounting protrusion has an adjacent surface adjacent to the connecting portion, and the snap-in groove is arranged on the adjacent surface.

[0010] Optionally, the connection seat abuts against the abutment surface.

[0011] Optionally, the base includes a fixing portion and a plurality of pole pieces provided on the fixing portion, the plurality of pole pieces are arranged in sequence and spaced apart, and the pole pieces have the clamping groove and the limiting groove.

[0012] Optionally, the connecting seat is provided with a slot, and the pole piece is inserted into the slot.

[0013] Optionally, the connection seat is provided with a plurality of plug-in plates, and the slot is formed between two adjacent plug-in plates.

[0014] Optionally, a buckle is provided on the limiting member, and a slot cooperating with the buckle is provided on the connecting seat.

[0015] Optionally, the limiting member is provided with a clearance groove, and the buckle includes a connecting strip and a clamping portion connected to the connecting strip, the connecting strip is connected to the groove wall of the clearance groove and extends from the notch of the clearance groove, and the clamping portion is located at one end of the connecting strip extending outside the clearance groove.

[0016] Optionally, the limiting member has a plurality of limiting sections, the number of the making way holes is multiple, and the plurality of limiting sections corresponds to the plurality of making way holes one by one.

[0017] The technical solution of the present invention is that a clamping groove and a limiting groove are provided on the base, a clamping part and a clearance hole are provided on the connecting seat, and a limiting piece that movably cooperates with the clearance hole is provided on the connecting seat. When the clamping part is clamped into the clamping groove, the clamping part can abut against the groove wall of the clamping groove, thereby limiting the movement of the connecting seat along the through direction of the clearance hole. Then the limiting piece is inserted into the limiting groove through the clearance hole, so that the abutment of the limiting piece against the groove wall of the limiting groove can limit the movement of the connecting seat in a direction perpendicular to the through direction of the clearance hole, thereby connecting the connecting seat to the base. Compared with the method of clamping the connecting seat and the base by elastic buckle, the present solution is to limit the position by the groove wall of the clamping groove on the base and the groove wall of the limiting groove respectively abutting against the clamping part and the limiting piece, so that the contact area of ​​the base and the connecting seat abutting against each other and playing a limiting role is larger, it is not easy to deform, the limiting effect is better, and there is no need to consider the problem of elastic failure, which greatly improves the stability of the connection between the connecting seat and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of an embodiment of an electrical connector of the present invention;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the middle base;

[0021] Figure 3 for Figure 2 A front view of the middle base;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the middle connecting seat;

[0023] Figure 5 for Figure 4 A cross-sectional view of the middle connecting seat;

[0024] Figure 6 for Figure 1 A schematic diagram of the structure of the middle limiter;

[0025] Figure 7 for Figure 6 Cross-sectional view of the middle limiter.

[0026] Description of Figure Numbers:

[0027] Label name Label name 10 Base 23 Make way hole 100 Pole piece 24 Card slot 110 Connection 25 Abutment surface 111 Limit slot 26 Mounting holes 112 Insertion port 30 Limiting parts 120 Mounting convex part 31 Buckle 121 Card slot 311 Connecting strip 122 Card interface 312 Holder 123 Adjacent surfaces 32 Limit section 20 Connector 33 Give way slot 21 Plug-in board 34 Saver trough 211 Slots 35 Anti-slip ridges 22 Card connection

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions, taking "A and / or B as an example", including solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] The present invention provides an electrical connector which can be used on a conventional circuit board, a hydrogen fuel cell, etc.

[0033] In the embodiments of the present invention, please refer to Figures 1 to 4 The electrical connector includes a base 10, a connection base 20 and a limiting member 30. The base 10 is provided with a clamping groove 121 and a limiting groove 111. The connection base 20 has a clamping portion 22 and a clearance hole 23. The clamping portion 22 is clamped with the clamping groove 121 to limit the movement of the connection base 20 along the through direction of the clearance hole 23. The clearance hole 23 is arranged corresponding to the limiting groove 111. The limiting member 30 is movably matched with the clearance hole 23 and can be inserted into the limiting groove 111 to limit the movement of the connection base 20 along the direction perpendicular to the through direction of the clearance hole 23.

[0034] Specifically, the connection seat 20 is used to install the conductive terminal (not shown), wherein the conductive terminal can be installed in a variety of ways. For example, in one embodiment, a mounting hole 26 can be provided on the mounting seat, and the conductive terminal can be inserted into the mounting hole 26. In one embodiment, the conductive terminal can also be embedded in the mounting seat. The base 10 is used to be installed on the fixed end of the circuit device, such as on a circuit board or a battery, etc. The structure of the base 10 has a variety of structures. For example, in one embodiment, the base 10 includes a base body and a conductive member provided on the base body, the connection seat 20 is connected to the base body, and the conductive member is electrically connected to the conductive terminal. Among them, the conductive member can be in the form of a column, a sheet or a dot-shaped protrusion, etc. In one embodiment, the base 10 includes a base body and a conductive member provided on the base body, the connection seat 20 is connected to the conductive member, and the conductive terminal is electrically connected to the conductive member. In one embodiment, the base 10 is a hydrogen fuel cell stack, and a conductive terminal is electrically connected to a single cell in the stack. The connection base 20 and the conductive member may be plugged and fixed to each other, or the connection base 20 may be clipped or welded to the conductive member. The conductive member may be in a columnar or sheet shape, etc.

[0035] The limiting member 30 is inserted into the limiting groove 111 along the through direction of the clearance hole 23, and the through direction of the clearance hole 23 and the direction in which the clamping portion 22 is clamped into the limiting groove 111 form an angle greater than 0° and less than 180°, that is, the direction in which the clamping portion 22 is clamped into the limiting groove 111 and the direction perpendicular to the through direction of the clearance hole 23 can be parallel or form an acute angle. In this way, when the clamping portion 22 is clamped into the clamping groove 121, the clamping groove 121 can limit the movement of the connecting seat 20 along the through direction of the clearance hole 23, and after the limiting member 30 is inserted into the limiting groove 111 from the clearance hole 23, the limiting groove 111 can limit the movement of the limiting member 30 and the connecting seat 20 along the direction in which the clamping portion 22 is clamped into the limiting groove 111, so that the connecting seat 20 can be connected to the base 10. Moreover, when the connecting seat 20 and the base 10 are separated, it is only necessary to pull the limiting member 30 out of the limiting groove 111, and then pull the clamping part 22 out of the clamping groove 121, which is convenient for disassembly and assembly. There are many ways to fix the limiting member 30, for example, the limiting member 30 can be interference-fitted with the limiting groove 111, or the limiting member 30 can be clamped with the limiting groove 111. It is also possible to insert the limiting member 30 into the limiting groove 111, so that the limiting member 30 and the paving groove 33 are interference-fitted, or the limiting member 30 is clamped with the connecting seat 20, etc.

[0036] The technical solution of the present invention is that a clamping groove 121 and a limiting groove 111 are provided on the base 10, a clamping portion 22 and a clearance hole 23 are provided on the connecting seat 20, and a limiting member 30 that movably cooperates with the clearance hole 23 is provided on the connecting seat 20. When the clamping portion 22 is clamped into the clamping groove 121, the clamping portion 22 can abut against the groove wall of the clamping groove 121, thereby limiting the movement of the connecting seat 20 along the through direction of the clearance hole 23. Then, the limiting member 30 is inserted into the limiting groove 111 through the clearance hole 23, so that the limiting member 30 abuts against the groove wall of the limiting groove 111, which can limit the movement of the connecting seat 20 along the through direction perpendicular to the clearance hole 23, and then the connecting seat 20 can be connected to the base 10. Compared with the method of clamping the connecting seat 20 and the base 10 by means of an elastic snap 31, the present solution is to limit the connection by means of the groove walls of the clamping groove 121 and the groove walls of the limiting groove 111 on the base 10 respectively abutting against the clamping portion 22 and the limiting member 30, so that the contact area between the base 10 and the connecting seat 20 that abuts against each other and plays a limiting role is larger, deformation is not likely to occur, the limiting effect is better, and there is no need to consider the problem of elastic failure, thereby greatly improving the stability of the connection between the connecting seat 20 and the base 10.

[0037] In one embodiment, the limiting groove 111 has an insertion opening 112 along the through direction of the clearance hole 23, and the clamping groove 121 has a clamping interface 122. The clamping interface 122 and the opening direction of the insertion opening 112 form a preset angle, which is greater than 0° and less than 180°. The clamping portion 22 is clamped into the clamping groove 121 from the clamping interface 122, so that the clearance hole 23 corresponds to the insertion opening 112. Specifically, the connecting portion 110 can move along the opening direction of the clamping interface 122 and be inserted into the clamping groove 121, and after the clamping portion 22 is inserted into the clamping groove 121, the clearance hole 23 and the insertion opening 112 can correspond to each other, so as to facilitate the insertion of the limiting member 30 into the limiting groove 111. Among them, the preset angle can be a right angle, or an acute angle or an obtuse angle.

[0038] In one embodiment, the base 10 includes a connecting portion 110 and a mounting protrusion 120 disposed on the connecting portion 110, a limiting groove 111 is disposed on the connecting portion 110, and an insertion port 112 faces the mounting protrusion 120, the mounting protrusion 120 has an adjacent surface 123 adjacent to the connecting portion 110, and the engaging groove 121 is disposed on the adjacent surface 123. Specifically, the insertion port 112 and the mounting protrusion 120 are both located on the same surface of the connecting portion 110, and the adjacent surface 123 is a surface connected to the connecting portion 110 and extending along the extension direction of the mounting protrusion 120. When the mounting protrusion 120 is cylindrical, the adjacent surface 123 is a cylindrical surface. When the mounting protrusion 120 is prismatic, the mounting protrusion 120 has a plurality of adjacent surfaces 123. The snap-fitting groove 121 can be arranged on an adjacent surface 123 facing the direction of the limiting groove 111, so that the distance between the snap-fitting portion 22 and the clearance hole 23 can be shorter, so that the structure of the connecting seat 20 is more compact, the volume of the connecting seat 20 can be reduced, and the volume of the electrical connector can be reduced. Of course, in other embodiments, the snap-fitting groove 121 can also be arranged on any adjacent surface 123 such as the adjacent surface 123 away from the direction of the limiting groove 111. In addition, in other embodiments, the base 10 can also be arranged in a square shape, and the limiting groove 111 and the snap-fitting groove 121 can be arranged on two adjacent surfaces of the base 10 respectively. The limiting groove 111 can also be arranged on the groove wall of the snap-fitting groove 121, and the limiting groove 111 can penetrate the base 10 in a direction away from the snap-fitting groove 121, and so on.

[0039] In one embodiment, the connection seat 20 abuts against the adjacent surface 123. Specifically, the connection seat 20 has an abutting surface 25 adjacent to the clamping portion 22 and facing the adjacent surface 123. After the clamping portion 22 is clamped into the clamping groove 121, the abutting surface 25 abuts against the adjacent surface 123, thereby limiting the clamping portion 22 from moving into the clamping groove 121, and at this time, the clearance hole 23 and the insertion port 112 correspond to each other, that is, the connection seat 20 can be positioned by abutting against the abutting surface 25 and the adjacent surface 123, so that the installation of the limiting member 30 is convenient.

[0040] Please refer to Figure 4 and Figure 5 In one embodiment, the base 10 includes a fixing portion and a plurality of pole pieces 100 disposed on the fixing portion, the plurality of pole pieces 100 are arranged in sequence and spaced apart, and the pole pieces 100 have a clamping groove 121 and a limiting groove 111. That is, the fixing portion is used to fix the pole pieces 100, the plurality of pole pieces 100 are arranged in sequence and spaced apart along the thickness direction thereof, and the limiting groove 111 extends along the arrangement direction of the plurality of pole pieces 100, that is, each pole piece 100 is provided with a limiting groove 111, and the limiting grooves 111 on the plurality of pole pieces 100 are aligned along the arrangement direction of the pole pieces 100, and when the limiting member 30 is inserted into the limiting groove 111, the limiting member 30 can abut against the plurality of pole pieces 100. The clamping groove 121 also extends along the arrangement direction of the plurality of pole pieces 100, that is, each pole piece 100 is provided with a clamping groove 121, and the clamping grooves 121 on the plurality of pole pieces 100 are aligned along the arrangement direction of the pole pieces 100. When the clamping portion 22 is clamped into the clamping groove 121, the clamping portion 22 can also abut against the plurality of pole pieces 100. That is, the connection seat 20 is directly fixed on the pole piece 100, and each pole piece 100 is electrically connected to a conductive terminal on the connection seat 20. This structure can be used for hydrogen fuel cells, which is equivalent to the base 10 being a battery stack of a hydrogen fuel cell, each pole piece 100 is equivalent to a single cell in the battery stack, and the conductive terminal connects the cathode and anode of the single cell. That is, the connection seat 20 can be directly fixed on the battery stack, and the connection stability of the connection seat 20 can be better without adding other fixings, and the structure can be simplified. Among them, the connection seat 20 can be spaced from the fixing portion, or can be connected to each other. Of course, in other embodiments, the structure can also be used for other fuel cells or conventional circuit boards, etc. In addition, in other embodiments, only some of the pole pieces 100 may be provided with the clamping grooves 121 and the limiting grooves 111. Only some of the pole pieces 100 may be electrically connected to the conductive terminals on the connection seat 20.

[0041] In one embodiment, the connection base 20 is provided with a slot 211, and the pole piece 100 is inserted into the slot 211. Specifically, the connection base 20 is provided with a plurality of slots 211, and the plurality of slots 211 are arranged in sequence and at intervals, and each pole piece 100 can be correspondingly inserted into a slot 211, and a conductive terminal is provided in each slot 211, so that the pole piece 100 can be electrically connected to the conductive terminal after being inserted into the slot 211. By inserting the pole piece 100 into the slot 211, the contact area between the pole piece 100 and the connection base 20 can be increased, and the pole piece 100 can also be better limited, and the stability of the pole piece 100 can be ensured.

[0042] In one embodiment, the connection seat 20 is provided with a plurality of plug-ins 21, and a slot 211 is formed between two adjacent plug-ins 21. That is, the plurality of plug-ins 21 are arranged in sequence and at intervals, and a slot 211 is formed between any two adjacent plug-ins 21. By forming the slot 211 between two adjacent plug-ins 21, it is equivalent to that the slot 211 has only two opposite side walls, and the positions of the other two opposite side walls are set as openings. When the pole piece 100 is inserted into the slot 211, the connection seat 20 can slide relative to the pole piece 100 toward the direction of the clamping groove 121, so that the clamping portion 22 can be inserted into the clamping groove 121. In this way, the sliding stroke of the connection seat 20 relative to the pole piece 100 is not limited by the slot 211 and the length of the pole piece 100, and the pole piece 100 inserted into the slot 211 is longer, so that the slot wall of the slot 211 can contact the pole piece 100, which can increase the contact area between the pole piece 100 and the connection seat 20, and improve the connection stability between the connection seat 20 and the pole piece 100. Of course, in other embodiments, a slot 211 may be recessed on the connecting seat 20, and the pole piece 100 may have a plug-in portion inserted into the slot 211, and the length of the plug-in portion is smaller than the length of the slot 211 to ensure that after the plug-in portion is inserted into the slot 211, the connecting seat 20 can slide relative to the pole piece 100.

[0043] Please refer to Figure 4 and Figure 6 In one embodiment, the stopper 30 is provided with a buckle 31, and the connection seat 20 is provided with a slot 24 that cooperates with the buckle 31. That is, when the stopper 30 is inserted into the limit slot 111, the buckle 31 can be engaged with the connection seat 20, so that the stability of the stopper 30 can be ensured, and the stopper 30 can be prevented from automatically falling out of the limit slot 111 when it is shaken. There can be one or more buckles 31, and when multiple buckles 31 are provided, the engagement effect can be improved.

[0044] Please refer to Figure 6 and Figure 7In one embodiment, the stopper 30 is provided with a clearance groove 33, and the buckle 31 includes a connecting strip 311 and a clamping portion 312 connected to the connecting strip 311. The connecting strip 311 is connected to the groove wall of the clearance groove 33 and extends from the notch of the clearance groove 33. The clamping portion 312 is located at one end of the connecting strip 311 extending outside the clearance groove 33. Specifically, the clearance groove 33 is arranged on the surface of the stopper 30 facing the connecting seat 20, and the connecting strip 311 is arranged at the groove bottom of the clearance groove 33. When the stopper 30 is inserted into the stopper groove 111, the clamping portion 312 can be clamped with the clamping groove 24. Compared with directly setting the buckle 31 on the outer surface of the stopper 30, the length of the connecting strip 311 can be increased, and then the elasticity of the connecting strip 311 can be improved, so that the stopper 30 can be easily disassembled. It can be understood that if the connecting strip 311 is increased by reducing the size of the limit member 30 along the through direction of the evacuation hole 23, the overall strength of the limit member 30 will be reduced. However, in the present solution, since only the evacuation groove 33 is provided corresponding to the position of the connecting strip 311, the overall strength of the limit member 30 is less affected and the structure of the limit member 30 can also be made more compact.

[0045] In one embodiment, the limiting member 30 has a plurality of limiting sections 32, and the number of the clearance holes 23 is a plurality, and the plurality of limiting sections 32 corresponds to the plurality of clearance holes 23 one by one. Specifically, the number of the limiting sections 32 is two, and the two limiting sections 32 are arranged at intervals, and the number of the clearance holes 23 is also two, and the two limiting sections 32 correspond to the two clearance holes 23 one by one. In this way, the contact area between the limiting member 30 and the connecting seat 20 can be increased, and the contact area between the limiting member 30 and the base 10 can also be increased, so that the limiting effect of the limiting member 30 is better. Moreover, as long as one of the limiting sections 32 can cooperate with the clearance hole 23, even if the size deviation of the other limiting section 32 is large or damaged, the matching installation of the limiting member 30 and the connecting seat 20 can be realized, and the matching accuracy requirement of the limiting member 30 can be reduced. Of course, in other embodiments, only one limiting section 32 can be set, or three or four limiting sections 32 can be set, etc.

[0046] In one embodiment, a surface of the stopper 30 that is away from the stopper section 32 is provided with a material saving groove 34, wherein the number of the material saving groove 34 may be one or more, and the material saving groove 34 may be extended to the stopper section 32, so that the stopper section 32 is hollow. By providing the material saving groove 34, the material used in the stopper 30 can be reduced, the production cost can be reduced, the weight of the stopper 30 can be reduced, and the stopper 30 can be conveniently formed.

[0047] In one embodiment, the side of the stopper 30 is provided with an anti-skid protrusion 35 to increase the friction between the stopper 30 and the stopper 30 when the stopper 30 is grasped, so as to facilitate the disassembly and assembly of the stopper 30. The anti-skid protrusion 35 can be provided on only one side of the stopper 30, or on both opposite sides of the stopper 30 to further improve the anti-skid effect. In order to better pull the stopper 30 out of the limit groove 111, the anti-skid protrusion 35 is arranged in a descending multi-step ladder shape along the direction in which the stopper 30 is inserted into the limit hole.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electrical connector, characterized in that: include: A base, wherein the base is provided with a clamping groove and a limiting groove; A connecting seat, comprising a clamping portion and a clearance hole, wherein the clamping portion is clamped with the clamping slot to limit the movement of the connecting seat along the through direction of the clearance hole, and the clearance hole is arranged corresponding to the limiting slot; and A limiting member, movably matched with the clearance hole and capable of being inserted into the limiting groove, so as to limit the movement of the connecting seat in a direction perpendicular to the through direction of the clearance hole; The limiting groove has an insertion opening along the through direction of the clearance hole, the clamping groove has a clamping interface, the clamping interface and the opening direction of the insertion opening form a preset angle, the preset angle is greater than 0° and less than 180°, and the clamping portion is clamped into the clamping groove from the clamping interface, so that the clearance hole corresponds to the insertion opening; The limiting member is provided with a buckle, and the connecting seat is provided with a slot matched with the buckle; The base includes a connecting portion and a mounting protrusion arranged on the connecting portion, the limiting groove is arranged on the connecting portion, and the insertion port faces the mounting protrusion, the mounting protrusion has an adjacent surface adjacent to the connecting portion, and the snap-in groove is arranged on the adjacent surface.

2. The electrical connector according to claim 1, wherein: The connection seat abuts against the abutment surface.

3. The electrical connector according to any one of claims 1 to 2, characterized in that: The base includes a fixing portion and a plurality of pole pieces arranged on the fixing portion, the plurality of pole pieces are arranged in sequence and spaced apart, and the pole pieces have the clamping groove and the limiting groove.

4. The electrical connector according to claim 3, characterized in that: The connecting seat is provided with a slot, and the pole piece is inserted into the slot.

5. The electrical connector according to claim 4, characterized in that: The connection seat is provided with a plurality of plug-in plates, and the slot is formed between two adjacent plug-in plates.

6. The electrical connector according to claim 1, wherein: The limiting member is provided with a clearance groove, and the buckle includes a connecting strip and a clamping portion connected to the connecting strip. The connecting strip is connected to the groove wall of the clearance groove and extends from the notch of the clearance groove. The clamping portion is located at one end of the connecting strip extending outside the clearance groove.

7. The electrical connector according to claim 1, wherein: The limiting member has a plurality of limiting sections, and the number of the evacuation holes is plural, and the plurality of limiting sections corresponds to the plurality of evacuation holes one by one.

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