Connector for preventing oblique insertion and fixing terminals

Abstract

The present invention discloses a connector for preventing oblique insertion and fixing terminals, belonging to the technical field of connectors, comprising a needle seat, a hole seat and a terminal, the hole seat is arranged in the needle seat, the terminal is arranged in the hole seat, a first plug hole is arranged on the needle seat, a pin is inserted in the first plug hole, a second plug hole is arranged at the bottom end of the hole seat, when the needle seat is matched with the hole seat, the pin passes through the second plug hole and is matched in the hole seat, the terminal is arranged in the second plug hole, a limiting structure is arranged on the terminal, a limiting hole is arranged in the hole seat, when the terminal is matched with the hole seat, the limiting structure of the terminal is against the limiting hole of the hole seat, a first convex rib is arranged in the needle seat, a slot is arranged in the hole seat, when the needle seat is matched with the hole seat, the first convex rib is preferentially plugged into the slot. When the needle seat and the hole seat are obliquely inserted, the needle seat will preferentially interfere with the first convex rib, the needle seat and the hole seat cannot be normally plugged, thereby preventing the pin from being squeezed and deformed by the hole seat. The first convex rib provided by the present invention can prevent the needle seat and the hole seat from being obliquely inserted.

Description

Technical Field

[0001] The invention relates to the technical field of connectors, and in particular to a connector capable of preventing oblique insertion and fixing terminals. Background Art

[0002] Connectors are a type of component that electronic engineers often come into contact with. Their function is very simple: to build a bridge of communication between blocked or isolated circuits within a circuit, so that current can flow and the circuit can achieve its intended function.

[0003] The connector usually includes a socket, a plug and a terminal. The plug is installed on the socket through an external lock assembly process, and the terminal is installed in the plug. If the plug and the socket are assembled blindly, the plug and the socket are very likely to be inserted obliquely, and the plug and the socket cannot be fully matched, resulting in poor connector plugging effect, and the pins inside are easily squeezed and damaged. The limit structure on the terminal is simple and cannot guarantee the stability of the terminal. The terminal is easy to loosen and detach, resulting in the interruption of circuit and signal transmission, which causes the problem of insufficient stability of the existing connector.

[0004] Therefore, how to provide a connector that can prevent the socket and the plug from being inserted obliquely, improve the stability of the terminals, and avoid interruption of circuit and signal transmission is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] To this end, the present invention provides a connector that prevents oblique insertion and fixes terminals, so as to solve the problem of connector instability caused by oblique insertion of a socket and a plug in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A connector for preventing oblique insertion and fixing terminals, comprising a needle seat, a hole seat and a terminal, the hole seat being cooperated with and arranged in the needle seat, the terminal being cooperated with and arranged in the hole seat, the needle seat being provided with a first plug hole, the first plug hole being inserted with a plug pin, the bottom end of the hole seat being provided with a second plug hole, when the needle seat is cooperated with the hole seat, the plug pin passes through the second plug hole and is cooperated with and arranged in the hole seat, the terminal is arranged in the second plug hole, a limiting structure is provided on the terminal, a limiting hole is provided in the hole seat, when the terminal is cooperated with the hole seat, the limiting structure of the terminal is against the limiting hole of the hole seat, a first convex rib is provided in the needle seat, a slot is provided in the hole seat, when the needle seat is cooperated with the hole seat, the first convex rib is preferentially plugged into the slot.

[0008] Furthermore, an elastic arm is provided in the hole seat, one end of the elastic arm is integrally formed with the hole seat, and the other end of the elastic arm is a movable end. A limiting hole is formed between the movable end of the elastic arm and the inner end surface of the hole seat. When the terminal is matched with the hole seat, the limiting structure of the terminal abuts against the movable end of the elastic arm.

[0009] Furthermore, the elastic arm is arranged in the slot, and there is a gap between the upper end of the elastic arm and the hole seat, the first rib is inserted along the gap between the movable port of the elastic arm and the hole seat, and the front end part of the first rib is narrow in front and wide in the back, and is located above the elastic arm and parallel to it.

[0010] Furthermore, when the elastic arm is squeezed upward by the limiting structure of the terminal, the first convex rib presses the elastic arm downward so that the elastic arm rests on the terminal; when the limiting structure of the terminal rests on the movable end of the elastic arm, there is a gap between the first convex rib and the elastic arm.

[0011] Furthermore, the limiting structure includes at least a first usage state, and in the first usage state, the limiting structure is a barb structure, one end of the barb structure is tilted to be a movable end, the other end of the barb structure is integrally formed with the terminal, and when the terminal is matched with the hole seat, the movable end of the barb structure is against the movable end of the elastic arm.

[0012] Furthermore, the limiting structure also includes a second usage state, and in the second usage state, the limiting structure is a high and low double barb structure, and the high and low double barb structure includes a high barb structure and a low barb structure. When the terminal is inserted into the hole seat, the high barb structure and the low barb structure are squeezed in turn, and the high barb structure and the low barb structure rebound in turn and press against the movable end of the elastic arm.

[0013] Furthermore, the limiting structure also includes a third usage state, and in the third usage state, the limiting structure is a reverse barb structure, one end of the reverse barb structure is integrally formed with the terminal, and the other end of the reverse barb structure is tilted to be a movable end, and side arms extend on both sides of the movable end of the reverse barb structure, and when the terminal is matched with the hole seat, the side wall of the movable end of the reverse barb structure is hung against the opening of the movable end of the elastic arm.

[0014] Furthermore, second convex ribs are provided on both sides of the upper end of the hole seat, and grooves are provided on both sides of the upper end of the needle seat. When the needle seat is matched with the hole seat, the second convex ribs are embedded in the grooves.

[0015] Furthermore, the length of the first rib is greater than the length of the insertion pin.

[0016] The present invention has the following advantages:

[0017] The connector provided by the present invention includes a needle seat, a hole seat and a terminal. The hole seat is arranged in the needle seat, and the terminal is arranged in the hole seat. The needle seat is provided with a first jack, and a pin is inserted in the first jack. The bottom end of the hole seat is provided with a second jack. When the needle seat is matched with the hole seat, the pin passes through the second jack and is matched in the hole seat. The terminal is arranged in the second jack. A limiting structure is provided on the terminal, and a limiting hole is provided in the hole seat. When the terminal is matched with the hole seat, the limiting structure of the terminal abuts against the limiting hole of the hole seat. A first convex rib is provided in the needle seat, and a slot is provided in the hole seat. When the needle seat is matched with the hole seat, the first convex rib is preferentially plugged into the slot. When the needle seat and the hole seat are obliquely inserted, the needle seat will preferentially interfere with the first convex rib, and the needle seat and the hole seat cannot be normally plugged, thereby preventing the pin from being squeezed and deformed by the hole seat. The first convex rib provided by the present invention can prevent the needle seat and the hole seat from being obliquely inserted.

[0018] An elastic arm is provided in the hole seat, one end of the elastic arm is integrally formed with the hole seat, the other end of the elastic arm is a movable end, a limiting hole is formed between the movable end of the elastic arm and the inner end surface of the hole seat, and when the terminal is matched with the hole seat, the limiting structure of the terminal abuts against the movable end of the elastic arm. The terminal provided by the present invention is fixed in the hole seat by the limiting structure, thereby preventing the terminal from loosening and improving the stability of the terminal.

[0019] The elastic arm is arranged in the slot, and there is a gap between the upper end of the elastic arm and the hole seat. The first convex rib is inserted along the gap between the movable end of the elastic arm and the hole seat, and the front end of the first convex rib is narrow in front and wide in the back, located above the elastic arm and parallel to it. When the elastic arm is pressed upward by the limiting structure of the terminal, the first convex rib presses the elastic arm downward so that the elastic arm abuts against the terminal; when the limiting structure of the terminal abuts against the movable end of the elastic arm, there is a gap between the first convex rib and the elastic arm. When the terminal is not fully inserted into the hole seat, the present invention squeezes the terminal through the elastic arm structure so that the terminal will not be separated from the hole seat, thereby increasing the connection relationship between the terminal and the hole seat and improving the stability of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 A schematic diagram of the structure of the connector provided by the present invention;

[0023] Figure 2 A schematic diagram of the structure of the needle holder provided by the present invention;

[0024] Figure 3 A schematic diagram of the structure of the hole seat provided by the present invention;

[0025] Figure 4 A schematic diagram of the structure of a terminal with a barbed structure provided by the present invention;

[0026] Figure 5 A schematic diagram of the structure of a terminal with a high and low double barb structure provided by the present invention;

[0027] Figure 6 A schematic diagram of the structure of a terminal with a reverse barb structure provided by the present invention;

[0028] Figure 7 A cross-sectional view of a terminal with a barbed structure, a hole seat and a needle seat provided by the present invention during normal plugging;

[0029] Figure 8 A cross-sectional view of a terminal with a high and low double barb structure, a hole seat and a needle seat in normal plugging provided by the present invention;

[0030] Fig. 9 A cross-sectional view of a terminal with a reverse barb structure, a hole seat and a needle seat provided by the present invention during normal plugging;

[0031] Fig.10 A cross-sectional view of abnormal plugging of a terminal, a hole seat and a needle seat with a barbed structure provided by the present invention.

[0032] In the figure:

[0033] 1 needle seat; 2 hole seat; 3 terminal; 4 first plug hole; 5 second plug hole; 6 elastic arm; 7 first convex rib; 8 slot; 9 barb structure; 10 high and low double barb structure; 101 high barb structure; 102 low barb structure; 11 reverse barb structure; 12 side arm; 13 second convex rib; 14 groove. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are 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.

[0035] A connector for preventing oblique insertion and fixing terminals, such as Figure 1 As shown, it includes a needle seat 1, a hole seat 2 and a terminal 3. The hole seat 2 is arranged in the needle seat 1, and the terminal 3 is arranged in the hole seat 2. The needle seat 1 is provided with a first plug hole 4, and a pin is inserted in the first plug hole 4. The bottom end of the hole seat 2 is provided with a second plug hole 5. When the needle seat 1 is matched with the hole seat 2, the pin passes through the second plug hole 5 and is matched in the hole seat 2. The terminal 3 is arranged in the second plug hole 5. A limiting structure is provided on the terminal 3, and a limiting hole is provided in the hole seat 2. When the terminal 3 is matched with the hole seat 2, the limiting structure of the terminal 3 is against the limiting hole of the hole seat 2. An elastic arm 6 is provided in the hole seat 2, one end of the elastic arm 6 is integrally formed with the hole seat 2, and the other end of the elastic arm 6 is a movable end. A limiting hole is formed between the movable end of the elastic arm 6 and the inner end surface of the hole seat 2. When the terminal 3 is matched with the hole seat 2, the limiting structure of the terminal 3 is against the movable end of the elastic arm 6. The terminal 3 provided by the present invention is fixed in the hole seat 2 by means of a limiting structure, thereby preventing the terminal 3 from loosening and improving the stability of the terminal 3.

[0036] like Figure 2-3 As shown, the needle seat 1 is provided with a first convex rib 7, and the hole seat 2 is provided with a slot 8. When the needle seat 1 and the hole seat 2 are matched, the first convex rib 7 is preferentially inserted into the slot 8. When the needle seat 1 and the hole seat 2 are inserted obliquely, the needle seat 1 will preferentially interfere with the first convex rib 7, and the needle seat 1 and the hole seat 2 cannot be inserted normally, thereby preventing the pin from being squeezed and deformed by the hole seat 2. The first convex rib 7 provided by the present invention can prevent the needle seat 1 and the hole seat 2 from being inserted obliquely.

[0037] The elastic arm 6 is arranged in the slot 8, and there is a gap between the upper end of the elastic arm 6 and the hole seat 2. The first rib 7 is inserted along the gap between the movable end of the elastic arm 6 and the hole seat 2, and the front end of the first rib 7 is located above the elastic arm 6 and parallel to it. Fig.10 As shown, when the elastic arm 6 is pressed upward by the limiting structure of the terminal 3, the first convex rib 7 presses the elastic arm 6 downward, so that the elastic arm 6 is against the terminal 3; Figure 7As shown, when the limiting structure of the terminal 3 is against the movable end of the elastic arm 6, there is a gap between the first rib 7 and the elastic arm 6. When the terminal 3 is not fully inserted into the socket 2, the elastic arm 6 structure provided in the present invention squeezes the terminal 3 so that the terminal 3 will not be separated from the socket 2, thereby increasing the connection between the terminal 3 and the socket 2 and improving the stability of the terminal 3.

[0038] Because the length of the first convex rib 7 is greater than the length of the pin, when the needle hub 1 and the hole hub 2 are installed, the slot 8 of the hole hub 2 will first cooperate with the first convex rib 7 of the needle hub 1. After the slot 8 cooperates with the first convex rib 7, the second plug hole 5 of the hole hub 2 cooperates with the pin of the needle hub 1. Once the needle hub 1 and the hole hub 2 are blindly inserted and obliquely inserted, the first convex rib 7 on the needle hub 1 interferes with the hole hub 2, making it impossible for the hole hub 2 to be inserted into the needle hub 1, thereby protecting the pin in the needle hub 1 from being squeezed by the hole hub 2 and deformed.

[0039] At the same time, because the front end of the first rib 7 is narrow in front and wide in the back, when the needle seat 1 and the hole seat 2 are installed, the elastic arm 6 is squeezed and tilted upward by the limiting structure of the terminal 3, and when the first rib 7 is gradually inserted into the slot 8, the first rib 7 will gradually squeeze the elastic arm 6 downward, so that the movable end of the elastic arm 6 moves down and rests on the terminal 3. The elastic arm 6 rests on the terminal 3, further increasing the connection relationship between the terminal 3 and the hole seat 2, and improving the stability of the terminal 3.

[0040] The second ribs 13 are provided on both sides of the upper end of the hole seat 2, and the grooves 14 are provided on both sides of the upper end of the needle seat 1. When the needle seat 1 is matched with the hole seat 2, the second ribs 13 are embedded in the grooves 14. The cooperation of the first ribs 7 and the grooves 14 also forms a technical effect of preventing oblique insertion of the needle seat 1 and the hole seat 2. When the needle seat 1 is installed with the hole seat 2, the second ribs 13 of the hole seat 2 are matched with the grooves 14 of the needle seat 1. The second ribs 13 and the grooves 14 are arranged on the outside of the hole seat 2 and the needle seat 1. Therefore, when the needle seat 1 is installed with the hole seat 2, the second ribs 13 of the hole seat 2 will also preferentially match with the grooves 14 of the needle seat 1. After the grooves 14 and the second ribs 13 are matched, the slot 8 of the hole seat 2 will match with the first ribs 7 of the needle seat 1, and then the second plug hole 5 of the hole seat 2 will match with the pin of the needle seat 1. Once the needle hub 1 and the hole hub 2 are blindly inserted and cause an oblique insertion, the second rib 13 on the hole hub 2 interferes with the needle hub 1, causing the hole hub 2 to be unable to be inserted into the needle hub 1, thereby protecting the pins in the needle hub 1 from being squeezed and deformed by the hole hub 2.

[0041] like Figure 4 and 7As shown, the limiting structure includes at least a first usage state, and in the first usage state, the limiting structure is a barb structure 9, one end of the barb structure 9 is tilted to be a movable end, and the other end of the barb structure 9 is integrally formed with the terminal 3, and when the terminal 3 is matched with the socket 2, the movable end of the barb structure 9 is against the movable end of the elastic arm 6.

[0042] Specifically, the terminal 3 is inserted into the second insertion hole 5 of the socket 2, and a limiting hole is formed between the movable end of the elastic arm 6 in the socket 2 and the inner end surface of the socket 2. When the terminal 3 is installed in the socket 2, the terminal 3 is gradually inserted into the second insertion hole 5 of the socket 2, and the barb structure 9 on the terminal 3 is squeezed until the barb structure 9 on the terminal 3 moves to the position of the limiting hole. At this time, the barb structure 9 on the terminal 3 rebounds, and the movable end side of the barb structure 9 of the terminal 3 is against the movable end side of the elastic arm 6. When the terminal 3 is pulled back, due to the limiting effect of the barb structure 9, it will not rush out of the socket 2, thereby establishing a connection relationship between the terminal 3 and the socket 2, and improving the stability of the terminal 3.

[0043] like Figure 5 and 8 As shown, the limiting structure also includes a second use state, and in the second use state, the limiting structure is a high-low double barb structure 10, and the high-low double barb structure 10 includes a high barb structure 101 and a low barb structure 102. When the terminal 3 is plugged into the socket 2, the high barb structure 101 and the low barb structure 102 are squeezed in sequence, and the high barb structure 101 and the low barb structure 102 rebound in sequence and abut against the movable end of the elastic arm 6. The high-low double barb structure 10 is similar in shape to the barb structure 9, and two barb shapes are set, and the heights of the two barbs are different. When the terminal 3 is plugged in, the high barb structure 101 is squeezed and rebounded first, and then the low barb structure 102 is squeezed and rebounded. The elastic arm 6 in the socket 2 is also adapted according to the structural characteristics of the high-low double barb structure 10. The elastic arm 6 in the socket 2 is provided with two abutting surfaces, so that two limiting holes are formed between the elastic arm 6 in the socket 2 and the socket 2.

[0044] Specifically, the terminal 3 is inserted into the second insertion hole 5 of the hole seat 2, and a limiting hole is formed between the movable end of the elastic arm 6 in the hole seat 2 and the inner end surface of the hole seat 2. When the terminal 3 is installed in the hole seat 2, the terminal 3 is gradually inserted into the second insertion hole 5 of the hole seat 2, and the high barb structure 101 in the high-low double barb structure 10 on the terminal 3 is squeezed first, and then the low barb structure 102 is squeezed again, until the high barb structure 101 on the terminal 3 moves to the position of the first limiting hole, and the low barb structure 102 on the terminal 3 moves to the position of the second limiting hole. At this time, the high barb structure 101 and the low barb structure 102 on the terminal 3 rebound, and the movable ends of the high barb structure 101 and the low barb structure 102 of the terminal 3 are both against the movable end of the elastic arm 6, so that when the terminal 3 is pulled back, due to the limiting effect of the high-low double barb structure 10, it will not rush out of the hole seat 2, thereby establishing a connection relationship between the terminal 3 and the hole seat 2, and improving the stability of the terminal 3. Furthermore, the high and low double barb structure 10 can increase the holding force while keeping the insertion force of the terminal 3 unchanged.

[0045] like Figure 6 and 9 As shown, the limiting structure also includes a third use state, and in the third use state, the limiting structure is an anti-barb structure 11, one end of the anti-barb structure 11 is integrally formed with the terminal 3, and the other end of the anti-barb structure 11 is tilted to be a movable end, and side arms 12 are extended on the left and right sides of the movable end of the anti-barb structure 11, and when the terminal 3 is matched with the hole seat 2, the side wall of the movable end of the anti-barb structure 11 is hung against the opening of the movable end of the elastic arm 6. The opening direction of the anti-barb structure 11 is opposite to that of the barb structure 9. After the anti-barb structure 11 is squeezed and rebounded, the side arms 12 on both sides of the anti-barb structure 11 are hung on the elastic arm 6 of the hole seat 2. The elastic arm 6 in the hole seat 2 is made adaptive according to the structural characteristics of the anti-barb structure 11, and the bottom surface of the movable end of the elastic arm 6 is concave, so that the side arms 12 on both sides of the barb structure 9 can be hung on the elastic arm 6 of the hole seat 2.

[0046] Specifically, the terminal 3 is inserted into the second insertion hole 5 of the hole seat 2, and a limiting hole is formed between the movable end of the elastic arm 6 in the hole seat 2 and the inner end surface of the hole seat 2. When the terminal 3 is installed in the hole seat 2, the terminal 3 is gradually inserted into the second insertion hole 5 of the hole seat 2, and the anti-barb structure 11 on the terminal 3 is squeezed until the anti-barb structure 11 on the terminal 3 moves to the position of the limiting hole. At this time, the anti-barb structure 11 on the terminal 3 rebounds, and the side arms 12 on both sides of the anti-barb structure 11 are hung on the elastic arm 6 of the hole seat 2. When the terminal 3 is pulled back, due to the limiting effect of the side arms 12 on both sides of the anti-barb structure 11, it will not rush out of the hole seat 2, thereby establishing a connection relationship between the terminal 3 and the hole seat 2, and improving the stability of the terminal 3. The anti-barb structure 11 can increase the holding force of the terminal 3 and solve the problem that the forward barb is easy to pull over.

[0047] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A connector for preventing oblique insertion and fixing terminals, characterized in that: The invention comprises a needle seat (1), a hole seat (2) and a terminal (3), wherein the hole seat (2) is arranged in cooperation with the needle seat (1), and the terminal (3) is arranged in cooperation with the hole seat (2). The needle seat (1) is provided with a first plug hole (4), and a plug pin is inserted into the first plug hole (4). The bottom end of the hole seat (2) is provided with a second plug hole (5). When the needle seat (1) is matched with the hole seat (2), the plug pin passes through the second plug hole (5) and is arranged in cooperation with the hole seat (2). The terminal (3) ) is arranged in the second jack (5), a limiting structure is provided on the terminal (3), a limiting hole is provided in the hole seat (2), when the terminal (3) is matched with the hole seat (2), the limiting structure of the terminal (3) abuts against the limiting hole of the hole seat (2), a first convex rib (7) is provided in the needle seat (1), a slot (8) is provided in the hole seat (2), when the needle seat (1) is matched with the hole seat (2), the first convex rib (7) is preferentially plugged into the slot (8); An elastic arm (6) is provided in the hole seat (2), one end of the elastic arm (6) is integrally formed with the hole seat (2), the other end of the elastic arm (6) is a movable end, a limiting hole is formed between the movable end of the elastic arm (6) and the inner end surface of the hole seat (2), and when the terminal (3) is matched with the hole seat (2), the limiting structure of the terminal (3) abuts against the movable end of the elastic arm (6); The elastic arm (6) is arranged in the slot (8), a gap is formed between the upper end of the elastic arm (6) and the hole seat (2), the first convex rib (7) is inserted along the gap between the movable end of the elastic arm (6) and the hole seat (2), and the front end of the first convex rib (7) is narrow at the front and wide at the rear, and is located above the elastic arm (6) and parallel to it; When the elastic arm (6) is pressed upward by the limiting structure of the terminal (3), the first convex rib (7) presses the elastic arm (6) downward so that the elastic arm (6) abuts against the terminal (3); when the limiting structure of the terminal (3) abuts against the movable end of the elastic arm (6), a gap exists between the first convex rib (7) and the elastic arm (6).

2. The connector for preventing oblique insertion and fixing terminals according to claim 1, characterized in that: The limiting structure includes at least a first use state, and in the first use state, the limiting structure is a barb structure (9), one end of the barb structure (9) is tilted to become a movable end, the other end of the barb structure (9) is integrally formed with the terminal (3), and when the terminal (3) is matched with the hole seat (2), the movable end of the barb structure (9) abuts against the movable end of the elastic arm (6).

3. The connector for preventing oblique insertion and fixing terminals according to claim 1, characterized in that: The limiting structure also includes a second use state, and in the second use state, the limiting structure is a high-low double barb structure (10), the high-low double barb structure (10) includes a high barb structure (101) and a low barb structure (102), when the terminal (3) is plugged into the hole seat (2), the high barb structure (101) and the low barb structure (102) are squeezed in turn, and the high barb structure (101) and the low barb structure (102) rebound in turn and abut against the movable end of the elastic arm (6).

4. The connector for preventing oblique insertion and fixing terminals according to claim 1, characterized in that: The limiting structure also includes a third use state, and in the third use state, the limiting structure is a reverse barb structure (11), one end of the reverse barb structure (11) is integrally formed with the terminal (3), the other end of the reverse barb structure (11) is tilted to form a movable end, and side arms (12) are extended on both sides of the movable end of the reverse barb structure (11), and when the terminal (3) is matched with the hole seat (2), the side wall of the movable end of the reverse barb structure (11) is hung and pressed against the opening of the movable end of the elastic arm (6).

5. The connector for preventing oblique insertion and fixing terminals according to claim 1, characterized in that: Second convex ribs (13) are provided on both sides of the upper end of the hole seat (2), and grooves (14) are provided on both sides of the upper end of the needle seat (1). When the needle seat (1) is matched with the hole seat (2), the second convex ribs (13) are embedded in the grooves (14).

6. The connector for preventing oblique insertion and fixing terminals according to claim 1, characterized in that: The length of the first rib (7) is greater than the length of the insertion pin.

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