Anti-retreating terminal assembly

Abstract

The utility model discloses an anti-retreating terminal assembly, which comprises a shell and a terminal inserted in the shell, the terminal is inserted in a slot built in the shell, the inner wall of the shell is provided with a limiting groove communicated with the slot, a limiting elastic sheet is inserted in the limiting groove, and the limiting elastic sheet is inserted in the limiting groove. The limiting elastic sheet is provided with a first elastic fin which obliquely extends towards the slot, the front end of the first elastic fin is bent to form a first bent part, the terminal is provided with a bayonet, when the terminal is inserted into the slot, the first bent part is clamped in the bayonet, and the first bent part is clamped in the bayonet. Therefore, the resistance for preventing the terminal from returning is formed on the terminal. According to the scheme, the first elastic fins extending inwards in the inclined mode through the limiting elastic pieces are clamped with the terminals after the terminals are inserted, component force perpendicular to the insertion direction of the terminals is generated on the terminals, then the positions of the terminals are limited, the purpose of preventing the terminals from retreating to generate position deviation is achieved, and then the connection reliability of the terminals in the using process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage connectors, in particular to an anti-retraction terminal assembly. Background Art

[0002] High-voltage connectors are essential parts for new energy vehicles, and generally include plug components and socket components that are plugged in. The socket component generally includes components such as a housing, power terminals, signal terminals, and a shielding housing. The plug component generally includes components such as connecting terminals that match the power terminals. Among them, the connection between the power terminal and the connecting terminal is used to connect the high-voltage circuit, so the setting stability of the power terminal and the connecting terminal is very important.

[0003] The existing power terminals or connecting terminals are mostly connected as disclosed in announcement number CN 217769010 U, where a shell matching the power terminal is set inside the socket shell to directly insert the power terminal. Since there is a large plug-in and pull-out force between the plug assembly and the socket assembly, it is necessary to further fix the position of the power terminal to prevent the power terminal from retreating and causing connection failure. The conventional practice is to set a connection hole at the tail end of the power terminal to pass screws and other connectors to fix it with other structures. This fixing method requires additional installation space to set the screws, and will increase the complexity and inconvenience of installation. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide an anti-retraction terminal assembly.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] An anti-retraction terminal assembly includes a shell and a terminal inserted therein, the terminal being inserted in a slot built into the shell, a limiting groove connected to the slot being provided on the inner wall of the shell, a limiting spring being inserted in the limiting groove, the limiting spring having a first elastic fin extending obliquely toward the slot, the front end of the first elastic fin being bent to form a first bending portion, a bayonet being provided on the terminal, when the terminal is inserted into the slot, the first bending portion being clamped in the bayonet to form a resistance force to prevent the terminal from retreating.

[0007] Preferably, the limiting spring piece further includes two second elastic fins symmetrically arranged on both sides of the first elastic fin, the front end of the second elastic fin extends obliquely toward the shell and forms a second bending portion, and the second bending portion is clamped with the limiting groove.

[0008] Preferably, a slide groove matching the two second elastic fins is provided on the inner wall of the limiting groove, and the second bending portion is slidably clamped in the slide groove.

[0009] Preferably, the first elastic fin and the second elastic fin extend in the same direction.

[0010] Preferably, the tail ends of the second elastic fin and the first elastic fin are connected to the tail end of the limiting spring sheet, and the tail end of the limiting spring sheet does not extend straightly, and the second elastic fin and the first elastic fin are not in the same straight line, and there is a height difference between the two.

[0011] Preferably, the slot includes a limiting shell connected to its front end, the limiting shell is hollow inside, and its inner contour matches the outer contour of the terminal so as to wrap the front end outer side wall of the terminal.

[0012] Preferably, the front end inner wall of the limiting housing has a limiting groove, and the front end of the terminal is embedded in the limiting groove.

[0013] Preferably, the entry port of the slot expands from inside to outside.

[0014] Preferably, the inner wall of the slot is provided with concave-convex patterns.

[0015] The beneficial effects of the utility model are mainly reflected in:

[0016] 1. A limiting spring is arranged in the housing, and the first elastic fin extending inwardly from the limiting spring is used to engage with the terminal after the terminal is inserted, so as to generate a component force perpendicular to the insertion direction of the terminal, thereby limiting the position of the terminal, preventing the terminal from retreating and causing position deviation, and thus ensuring the connection reliability of the terminal during use;

[0017] 2. The limiting spring piece is symmetrically provided with second elastic fins on both sides of the first elastic fin, and the second elastic fins are bent in opposite directions to engage with the limiting groove, so as to generate an abutting force in the opposite direction to the clamping force of the first elastic fin and the bayonet, so as to limit the first elastic fin in the bayonet, so as to prevent the first elastic fin from being disengaged from the bayonet, and enhance the limiting effect of the first elastic fin on the terminal;

[0018] 3. A height difference is formed between the first elastic fin and the second elastic fin, so that the first elastic fin fits more closely to the outer wall of the terminal and the second elastic fin fits more closely to the wall of the limiting groove, ensuring that the first elastic fin and the second elastic fin have sufficient elasticity to ensure their clamping effect. On the other hand, the limiting spring piece itself has a margin for contraction, so that its two sides abut against the two sides of the limiting groove during use, thereby ensuring the centering position of the first elastic fin and the clamping connection between it and the bayonet, thereby avoiding the clamping failure of the limiting spring piece due to size deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0020] Figure 1 : A schematic diagram of an embodiment of the utility model;

[0021] Figure 2 : A cross-sectional view of the first direction of the embodiment of the utility model;

[0022] Figure 3 : A cross-sectional view of the second direction of the embodiment of the utility model;

[0023] Figure 4 : A cross-sectional view of the third direction of the embodiment of the utility model;

[0024] Figure 5 : A cross-sectional view of the fourth direction of the embodiment of the utility model;

[0025] Figure 6 : A schematic diagram of a limiting spring in an embodiment of the utility model;

[0026] Figure 7 : A side view of a limiting spring piece in an embodiment of the present utility model. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0028] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0029] like Figures 1 to 7As shown, the utility model discloses an anti-retraction terminal assembly, including a shell 1 and a terminal 2 inserted therein, the terminal 2 being inserted in a slot 101 built into the shell 1, and a limiting groove 102 connected to the slot 101 is provided on the inner wall of the shell 1, and a limiting spring piece 3 is inserted in the limiting groove 102, and the limiting spring piece 3 has a first elastic fin 301 extending obliquely toward the slot 101, and the front end of the first elastic fin 301 is bent to form a first bending portion 302, and a bayonet 201 is provided on the terminal 2. When the terminal 2 is inserted in the slot 101, the first bending portion 302 is clamped in the bayonet 201 to form a resistance to the terminal 2 to prevent it from retreating.

[0030] In this solution, a limiting spring piece 3 is arranged in the shell 1, and a first elastic fin 301 extending inwardly from the limiting spring piece 3 is used to engage with the terminal 2 after the terminal 2 is inserted, so as to generate a component force perpendicular to the insertion direction of the terminal 2, thereby limiting the position of the terminal 2 and preventing it from retreating and causing position displacement, thereby ensuring the connection reliability of the terminal 2 during use.

[0031] Furthermore, the limiting spring piece 3 further includes two second elastic fins 303 symmetrically arranged on both sides of the first elastic fin 301, the front end of the second elastic fin 303 extends obliquely toward the housing 1 and forms a second bending portion 304, and the second bending portion 304 is engaged with the limiting groove 102. The limiting spring piece 3 symmetrically arranges the second elastic fins 303 on both sides of the first elastic fin 301, the bending direction of the second elastic fin 303 is opposite to that of the first elastic fin 301, and the second elastic fin 303 is engaged with the limiting groove 102, and the abutment force generated by the second elastic fin 303 is opposite to the direction of the clamping force of the first elastic fin 301 and the bayonet 201, so as to limit the first elastic fin 301 in the bayonet 201, so as to prevent the first elastic fin 301 from being disengaged from the bayonet 201, and enhance the limiting effect of the first elastic fin 301 on the terminal 2.

[0032] like Figure 3 and Figure 4As shown, a slide groove 103 matching the two second elastic fins 303 is provided on the inner wall of the limiting groove 102, and the second bent portion 304 is slidably clamped in the slide groove 103. The setting of the slide groove 103 can, on the one hand, facilitate limiting the position of the second elastic fin 303 when the limiting spring piece 3 is inserted; on the other hand, the slide groove 103 is recessed in the limiting groove 102, so that the second bent portion 304 is clamped in the slide groove 103, and the clamping connection between the two is more reliable, and the second bent portion 304 will not be disengaged from the slide groove 103, thereby ensuring the stability of the position of the limiting spring piece 3.

[0033] In a preferred embodiment, the first elastic fin 301 and the second elastic fin 303 extend in the same direction to facilitate the insertion of the terminal 2. In other feasible embodiments, the extension direction of the second elastic fin 303 may also be opposite to that of the first elastic fin 301.

[0034] The tail ends of the second elastic fin 303 and the first elastic fin 301 are both connected to the tail end of the limiting spring piece 3, and the tail end of the limiting spring piece 3 does not extend straight, and the second elastic fin 303 and the first elastic fin 301 are not in the same straight line, and there is a height difference between the two. The height difference is formed between the first elastic fin 301 and the second elastic fin 303, so that the first elastic fin 301 is more closely fitted to the outer wall of the terminal 2, and the second elastic fin 303 is more closely fitted to the groove wall of the limiting groove 102, so as to ensure that the first elastic fin 301 and the second elastic fin 303 have sufficient elasticity to ensure their clamping effect; on the other hand, the limiting spring piece 3 itself has a contraction margin, so that its two sides are in contact with the two sides of the limiting groove 102 during use, thereby ensuring the centering position of the first elastic fin 301, ensuring its clamping connection with the bayonet 201, and avoiding the displacement or clamping failure of the limiting spring piece 3 due to size deviation.

[0035] The slot 101 includes a limiting housing 103 connected to the front end thereof, the limiting housing 103 is hollow inside, and its inner contour matches the outer contour of the terminal 2 to wrap the front outer side wall of the terminal 2. The limiting housing 103 is integrally formed with the housing 1, and it wraps the outer side wall of the terminal 2 so that fingers will not touch the terminal 2 body, thereby achieving the effect of preventing finger contact.

[0036] Furthermore, the front inner wall of the limiting housing 103 has a limiting groove 104 , and the front end of the terminal 2 is embedded in the limiting groove 104 to enhance the stability of the terminal 2 in the limiting housing 103 .

[0037] The entry port 1011 of the slot 101 is enlarged from inside to outside to further facilitate the insertion of the terminal 2 .

[0038] In addition, the inner wall of the slot 101 is provided with concave and convex patterns to reduce the close contact area with the terminal 2 and provide heat dissipation capability. Figure 5 As shown, the concave-convex patterns are preferably in strip shape.

[0039] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0040] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An anti-retraction terminal assembly, comprising a housing (1) and a terminal (2) inserted therein, characterized in that: The terminal (2) is inserted into a slot (101) built into the housing (1); a limiting slot (102) connected to the slot (101) is provided on the inner wall of the housing (1); a limiting spring (3) is inserted into the limiting slot (102); the limiting spring (3) has a first elastic fin (301) extending obliquely toward the slot (101); the front end of the first elastic fin (301) is bent to form a first bent portion (302); a bayonet (201) is provided on the terminal (2); when the terminal (2) is inserted into the slot (101), the first bent portion (302) is clamped in the bayonet (201) to form a resistance force to prevent the terminal (2) from retreating.

2. The anti-retraction terminal assembly according to claim 1, characterized in that: The limiting spring piece (3) further comprises two second elastic fins (303) symmetrically arranged on both sides of the first elastic fin (301), the front end of the second elastic fin (303) extending obliquely towards the housing (1) to form a second bent portion (304), and the second bent portion (304) is snap-fitted with the limiting groove (102).

3. The anti-retraction terminal assembly according to claim 2, characterized in that: A slide groove (1021) matching the two second elastic fins (303) is provided on the inner wall of the limiting groove (102), and the second bending portion (304) is slidably clamped in the slide groove (1021).

4. The anti-retraction terminal assembly according to claim 3, characterized in that: The first elastic fin (301) and the second elastic fin (303) extend in the same direction.

5. The anti-retraction terminal assembly according to claim 4, characterized in that: The tail ends of the second elastic fin (303) and the first elastic fin (301) are both connected to the tail end of the limiting spring sheet (3), and the tail end of the limiting spring sheet (3) does not extend straightly. The second elastic fin (303) and the first elastic fin (301) are not in the same straight line, and there is a height difference between the two.

6. The anti-retraction terminal assembly according to any one of claims 1 to 5, characterized in that: The slot (101) comprises a limiting housing (103) connected to its front end; the limiting housing (103) is hollow inside, and its inner contour matches the outer contour of the terminal (2) so as to wrap the outer front end wall of the terminal (2).

7. The anti-retraction terminal assembly according to claim 6, characterized in that: The front inner wall of the limiting housing (103) is provided with a limiting groove (104), and the front end of the terminal (2) is embedded in the limiting groove (104).

8. The anti-retraction terminal assembly according to claim 7, characterized in that: The entry port (1011) of the slot (101) expands from the inside to the outside.

9. The anti-retraction terminal assembly according to claim 8, characterized in that: The inner wall of the slot (101) is provided with concave and convex patterns.

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