Straight head type connector

Abstract

The utility model relates to the technical field of automobile parts, in particular to a straight head type connector, which solves the problem that a terminal inner core of a straight head type high-voltage connector in the prior art is not firmly fixed in the connector, and comprises a shell main body and an insulation fixing clamp, the shell main body is of a multi-cavity structure, and the insulation fixing clamp is provided with a mounting beam. The mounting beams correspond to the retaining walls between the adjacent cavities in position, and the mounting beams are connected with U-shaped clamps which are connected with terminal inner cores in the cavities of the shell body. The connector has the beneficial effects that the U-shaped clamp is positioned in the middle of the main body shell, so that the sealing of the connector cannot be interfered, and the connector can meet the sealing requirement; the shell main body adopts a multi-cavity structure, the U-shaped clamps correspond to the retaining walls between the adjacent cavities, and the U-shaped clamps can fix the terminal inner cores in the two adjacent cavities on the shell main body at the same time, so that the effect of controlling two parts by one part is realized, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a straight head connector. Background Art

[0002] With the rapid development of new energy vehicles, the requirements for connectors are getting higher and higher, and the retention force requirements for power terminals in the shell are also very strict. The new standard requires a single terminal retention force of at least 450N, which means that the terminal and its inner core need to be fixed more firmly and reliably in the connector.

[0003] The patent with publication number CN117175286A discloses a connector with a terminal locking piece, including a plug and a socket, wherein the plug is provided with a terminal locking mechanism, the terminal locking mechanism including a rubber core, a female terminal and a terminal locking piece, the female terminal is inserted in a plug-in cavity at the end of the rubber core, and a notch is provided on the plug-in cavity; the terminal locking piece is inserted in a limiting slot on the rubber core, the terminal locking piece includes a main body connecting portion, a plug-in arm, and a locking arm, and the limiting slot has a pre-installed card position and a locking card position, and the plug-in arm is engaged with the pre-installed card position or the locking card position; in the process of the plug being plugged into the socket, when the plug-in arm is engaged with the pre-installed card position, the front end of the shell of the socket abuts against the main body connecting portion, and drives it to slide forward until the plug-in arm and the limiting slot are engaged with the locking card position, at which time the end of the locking arm passes through the notch and is engaged with the fixed card port on the female terminal to form a secondary locking of the female terminal. This solution ensures that the terminal locking piece forms a secondary lock on the female terminal through plugging, thereby enhancing the stability of the terminal in the connector. However, due to the installation form of the terminal locking piece, the locking piece can only be applied to elbow connectors and cannot be applied to straight connectors. In addition, the current circuit of the quick-plug high-voltage connector is two-core or multi-core, and the inner core of the terminal needs to be firmly fixed on the shell body. The traditional structure relies on the shielding layer spring clip to be hung on the shell body. Since the product requires IP67 waterproofing, if it is still fixed from the side of the shell body through a hole, the sealing cannot meet the requirements. Utility Model Content

[0004] The utility model provides a straight-head connector, which solves the problem in the prior art that the terminal inner core of the straight-head high-voltage connector is not firmly fixed in the connector.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A straight connector includes a shell body and an insulating fixing card. The shell body is a multi-cavity structure. The insulating fixing card is provided with a mounting beam. The mounting beam corresponds to the position of the retaining wall between adjacent cavities. A U-shaped card is connected to the mounting beam. The U-shaped card is connected to the terminal inner core in the shell body cavity. The U-shaped card fixes the terminal inner core to prevent the terminal inner core from falling off from the shell body, thereby ensuring the installation stability of the terminal inner core in the shell body. At the same time, the U-shaped card is arranged at the corresponding position of the retaining wall in the shell body, avoiding the terminal sealing area, so that the connector can be better sealed.

[0007] The U-shaped card is a U-shaped structure, and the terminal inner core and the mounting beam of the insulation fixing card are both connected to the U-shaped structure. The insulation fixing card fixes the U-shaped card, and the U-shaped card fixes the terminal inner core.

[0008] The roots of both sides of the U-shaped card are provided with inward-turned spring spikes, and the mounting beam of the insulating fixing card is provided with a limiting groove, and the inward-turned spring spikes are connected to the limiting grooves. Specifically, a plug-in hole is provided on the mounting beam, and a limiting block is provided in the middle of the plug-in hole, and the limiting grooves are arranged on both sides of the limiting block. When the U-shaped card is connected to the mounting beam, the limiting block is inserted into the U-shaped card, and the limiting block cooperates with the bottom of the U-shaped card, and the inward-turned spring spike cooperates with the limiting groove. The two sets of matching structures work together to limit the position of the U-shaped card and ensure that the U-shaped card is accurately installed on the insulating fixing card.

[0009] The two side heads of the U-shaped card are provided with secondary outward spring claws, which are connected to the terminal inner core. The U-shaped card corresponds to the retaining wall in the shell body, and the secondary outward spring claws on the two side edges of the U-shaped card are respectively located on both sides of the retaining wall, that is, one U-shaped card corresponds to fixing the terminal inner cores in two cavities.

[0010] The terminal inner core comprises a shielding layer and an insulating inner core, a copper bus terminal is arranged in the insulating inner core, and the shielding layer is sleeved on the outer side of the insulating inner core. The copper bus terminal welded with the wire is fixed in the insulating inner core, the insulating inner core is inserted into the shielding layer, and then the terminal inner core is inserted into the shell body, and the terminal inner core is fixed by a U-shaped clamp.

[0011] The shielding layer is provided with a shielding layer fixing hole, the insulating inner core is provided with an insulating inner core fixing hole, the shielding layer fixing hole corresponds to the insulating inner core fixing hole, and the shielding layer fixing hole and the insulating inner core fixing hole are connected to the secondary outward-turning spring claw together.

[0012] The secondary outward-turning spring claw comprises a spring claw cantilever portion integrally connected to the main body of the U-shaped clip, the end of the spring claw cantilever portion is connected to a spring claw clamping surface, and the spring claw clamping surface is clamped and matched with the shielding layer fixing hole and the insulating inner core fixing hole. The spring claw clamping surface is matched with the edge of the fixing hole, and the spring claw cantilever portion passes through the shielding layer fixing hole and the insulating inner core fixing hole.

[0013] The end of the spring claw cantilever part is connected to the spring claw clamping surface through an arc-shaped connecting part, which plays a transition role and ensures that the spring claw cantilever part can smoothly enter the shielding layer fixing hole after passing through the insulating inner core fixing hole.

[0014] The end of the spring claw clamping surface is connected with a spring claw limiting portion, which cooperates with the outer side surface of the shielding layer to ensure that the spring claw clamping surface can accurately correspond to the position of the shielding layer fixing hole and the insulating inner core fixing hole.

[0015] The mounting beam of the insulating fixing card is provided with a cantilever buckle, the cantilever buckle and the limit groove are arranged in a staggered manner, the shell body is provided with a limit hanging platform, and the cantilever buckle is connected to the limit hanging platform. The cantilever buckle is arranged on the mounting beam, that is, the cantilever buckle is located in the middle position of the shell body, avoiding the surrounding sealing area, so as to ensure the sealing function.

[0016] The beneficial effects of the utility model are as follows: the U-shaped card is fixed in the middle position of the insulating fixing card, the insulating fixing card is connected to the main shell, the U-shaped fixing card fixes the terminal core, and ensures that the terminal core is stably installed in the main shell; wherein the U-shaped card is located in the middle position of the main shell, and will not interfere with the sealing of the connector, so that the connector can meet the sealing requirements; the shell body adopts a multi-cavity structure, the U-shaped card corresponds to the retaining wall between adjacent cavities, and the U-shaped card can simultaneously fix the terminal cores in two adjacent cavities on the shell body, achieving the effect of controlling two with one, and saving costs.

[0017] The U-shaped card forms a step structure by bending a thin plate, and the step surface of the step structure is a spring claw clamping surface, which can be clamped and matched with the shielding layer fixing hole and the insulating core fixing hole at the same time, thereby enhancing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is an exploded view of a straight connector of the utility model;

[0020] Figure 2 It is an isometric view of a straight connector;

[0021] Figure 3 It is a schematic diagram of the U-shaped card structure;

[0022] Figure 4 It is a cross-sectional view of the U-shaped card and the insulating fixing card;

[0023] Figure 5 Schematic diagram of shielding layer structure;

[0024] Figure 6 It is a schematic diagram of the insulating core structure;

[0025] Figure 7 It is a cross-sectional view of the U-shaped card, shielding layer and insulating core;

[0026] Figure 8 It is a schematic diagram of the insulation fixing card structure;

[0027] Fig. 9 It is a cross-sectional view of the cooperation between the insulating fixing card and the shell body;

[0028] Fig.10 It is a schematic diagram of the secondary eversion spring claw structure.

[0029] In the figure: 1. U-shaped card, 2. Insulation fixing card, 3. Shell body, 4. Shielding layer, 5. Insulation inner core, 6. Copper bus terminal, 101. Inward-turned spring thorn, 102. Secondary outward-turned spring claw, 201. Limiting groove, 202. Cantilever buckle, 301. Limiting hanging platform, 401. Shielding layer fixing hole, 501. Insulation inner core fixing hole, 121. Spring claw cantilever part, 122. Arc-shaped connecting part, 123. Spring claw clamping surface, 124. Spring claw limiting part. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Embodiment 1, as Figure 1 , Figure 2As shown, a straight-head connector includes a shell body 3 and an insulating fixing card 2. The shell body 3 is a multi-cavity structure. The insulating fixing card 2 is provided with a mounting beam, and the mounting beam corresponds to the position of the retaining wall between adjacent cavities. A U-shaped card 1 is connected to the mounting beam, and the U-shaped card 1 is connected to the terminal inner core in the cavity of the shell body 3. The U-shaped card 1 fixes the terminal inner core to prevent the terminal inner core from falling off from the shell body 3, and ensures the installation stability of the terminal inner core in the shell body 3; at the same time, the U-shaped card 1 is arranged at the corresponding position of the retaining wall in the shell body 3, that is, the U-shaped card 1 is located in the middle position of the shell body 3, avoiding the terminal sealing area, and will not interfere with the sealing of the connector, so that the connector can be better sealed. In this embodiment, two cavities arranged side by side are provided in the shell body 3, and the U-shaped card 1 is located between the two cavities. The terminal inner cores in the two cavities can be fixed by one U-shaped card 1, achieving the effect of controlling two with one, saving costs.

[0032] Further, if Figure 3 As shown, the U-shaped card 1 is a U-shaped structure, and the terminal core and the mounting beam of the insulation fixing card 2 are both connected to the U-shaped structure. The insulation fixing card 2 fixes the U-shaped card 1, and the U-shaped card 1 fixes the terminal core.

[0033] Further, if Figure 8 , Fig. 9 As shown, a cantilever buckle 202 is provided on the mounting beam of the insulating fixing card 2, and the cantilever buckle 202 is staggered with the limiting groove 201. A limiting hanging platform 301 is provided on the shell body 3, and the cantilever buckle 202 is connected to the limiting hanging platform 301. The cantilever buckle 202 is arranged on the mounting beam, that is, the cantilever buckle 202 is located in the middle position of the shell body 3, avoiding the surrounding sealing area, and can ensure the sealing function.

[0034] Embodiment 2, based on embodiment 1, a straight connector, such as Figure 4 As shown, the roots of both sides of the U-shaped card 1 are provided with inverted spring spikes 101, and the mounting beam of the insulating fixed card 2 is provided with a limiting groove 201, and the inverted spring spikes 101 are connected with the limiting groove 201. Specifically, a plug-in hole is provided on the mounting beam, and a limiting block is provided in the middle of the plug-in hole. The limiting groove 201 is arranged on both sides of the limiting block. When the U-shaped card 1 is connected to the mounting beam, the limiting block is inserted into the U-shaped card 1, and the limiting block cooperates with the bottom of the U-shaped card 1, and the inverted spring spikes 101 cooperate with the limiting groove 201. The two sets of matching structures work together to limit the position of the U-shaped card 1 and ensure that the U-shaped card 1 is accurately installed on the insulating fixed card 2.

[0035] Furthermore, the two side heads of the U-shaped card 1 are provided with secondary outward spring claws 102, which are connected to the terminal inner core. The U-shaped card 1 corresponds to the retaining wall in the shell body 3, and the secondary outward spring claws 102 on both sides of the U-shaped card 1 are respectively located on both sides of the retaining wall, that is, one U-shaped card 1 corresponds to fixing the terminal inner cores in two cavities, achieving the effect of controlling two with one.

[0036] Furthermore, the terminal core includes a shielding layer 4 and an insulating core 5, a copper busbar terminal 6 is arranged in the insulating core 5, and the shielding layer 4 is sleeved on the outer side of the insulating core 5. The copper busbar terminal 6 welded with the wire is fixed in the insulating core 5, the insulating core 5 penetrates the shielding layer 4, and then the terminal core is penetrated into the shell body 3, and the terminal core is fixed by the U-shaped clamp 1. Figure 5 , Figure 6 , Figure 7 As shown, a shielding layer fixing hole 401 is provided on the shielding layer 4, and an insulating core fixing hole 501 is provided on the insulating core 5. The shielding layer fixing hole 401 corresponds to the insulating core fixing hole 501 in position, and the shielding layer fixing hole 401 and the insulating core fixing hole 501 are connected to the secondary outward-turning claw 102 together.

[0037] Further, if Fig.10 As shown, the secondary outward-turning claw 102 includes a claw cantilever portion 121 integrally connected to the main body of the U-shaped card 1, and the end of the claw cantilever portion 121 is connected to a claw clamping surface 123, and the claw clamping surface 123 is clamped and matched with the shielding layer fixing hole 401 and the insulating inner core fixing hole 501. The end of the claw cantilever portion 121 and the claw clamping surface 123 are connected by an arc-shaped connecting portion 122. The arc-shaped connecting portion 122 plays a transition role, and at the same time ensures that the claw cantilever portion 121 can smoothly enter the shielding layer fixing hole 401 after passing through the insulating inner core fixing hole 501. The end of the claw clamping surface 123 is connected to a claw limiting portion 124. The claw limiting portion 124 cooperates with the outer side surface of the shielding layer 4 to ensure that the claw clamping surface 123 can accurately correspond to the position of the shielding layer fixing hole 401 and the insulating inner core fixing hole 501.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A straight connector, comprising a housing body (3) and an insulating fixing card (2), characterized in that: The housing body (3) is a multi-cavity structure, a mounting beam is provided on the insulating fixing card (2), the mounting beam corresponds to the position of the retaining wall between adjacent cavities, a U-shaped card (1) is connected to the mounting beam, and the U-shaped card (1) is connected to the terminal inner core in the cavity of the housing body (3); The U-shaped card (1) is a U-shaped structure, and the terminal core and the mounting beam of the insulating fixing card (2) are both connected to the U-shaped structure; Inward-turned spring spikes (101) are provided at the root of both side edges of the U-shaped card (1), and a limiting groove (201) is provided on the mounting beam of the insulating fixing card (2), and the inward-turned spring spikes (101) are connected to the limiting groove (201).

2. The straight connector according to claim 1, characterized in that: Secondary outward-turning spring claws (102) are provided on both side heads of the U-shaped card (1), and the secondary outward-turning spring claws (102) are connected to the inner core of the terminal.

3. The straight connector according to claim 2, characterized in that: The terminal inner core comprises a shielding layer (4) and an insulating inner core (5), a copper bus terminal (6) is arranged in the insulating inner core (5), and the shielding layer (4) is sleeved on the outer side of the insulating inner core (5).

4. The straight connector according to claim 3, characterized in that: A shielding layer fixing hole (401) is provided on the shielding layer (4), and an insulating inner core fixing hole (501) is provided on the insulating inner core (5); the shielding layer fixing hole (401) and the insulating inner core fixing hole (501) correspond in position to each other, and the shielding layer fixing hole (401) and the insulating inner core fixing hole (501) are jointly connected to the secondary outward-turning spring claw (102).

5. The straight connector according to claim 3 or 4, characterized in that: The secondary outward-turning spring claw (102) comprises a spring claw cantilever portion (121) integrally connected to the main body of the U-shaped clip (1), the end of the spring claw cantilever portion (121) being connected to a spring claw clamping surface (123), and the spring claw clamping surface (123) being clamped and matched with the shielding layer fixing hole (401) and the insulating inner core fixing hole (501).

6. The straight connector according to claim 5, characterized in that: The end of the elastic claw cantilever portion (121) is connected to the elastic claw clamping surface (123) via an arc-shaped connecting portion (122).

7. The straight connector according to claim 6, characterized in that: The end of the spring claw clamping surface (123) is connected to the spring claw limiting portion (124).

8. The straight connector according to any one of claims 1, 3, 4, 6 and 7, characterized in that: A cantilever buckle (202) is provided on the mounting beam of the insulating fixing card (2), the cantilever buckle (202) and the limiting groove (201) are arranged in a staggered manner, a limiting hanging platform (301) is provided on the housing body (3), and the cantilever buckle (202) is connected to the limiting hanging platform (301).

Images