High-speed electric connector
By designing the anti-retraction snap, slot, groove and convex rib structure in the high-speed electrical connector, the problem of the inner shell and circuit board moving back during secondary injection molding is solved, the connection strength is enhanced, and the product quality is improved.
Patent Information
- Application Number
- CN202420717037.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-09
AI Technical Summary
During the secondary injection molding process of high-speed electrical connectors, the inner shell and the circuit board move backward relative to the outer shell due to the injection molding pressure, resulting in insufficient protrusion of the front end of the circuit board, resulting in the problem of defective products.
A high-speed electrical connector including a shell, an inner shell and a circuit board is designed. The back of the inner shell is equipped with a stop-retard clip, the back of the shell is equipped with a corresponding stop-retard clip slot, and the injection molded package is filled with the inner cavity of the stop-retard clip slot. The space is not occupied, the back of the inner shell is provided with grooves and corresponding outer holes on the back of the outer shell, and the front of the inner shell is provided with convex ribs. The injection molded package covers these structures to enhance the connection strength.
It effectively prevents the backward movement of the inner shell and the circuit board relative to the outer shell during secondary injection molding, enhances the connection of the internal structure, improves product quality and connection strength, and avoids the occurrence of bad products.
Smart Images
Figure CN222261478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a high-speed electric connector. Background Art
[0002] High-speed electrical connectors are electromechanical components that connect electrical circuits. The specific structure of high-speed electrical connectors includes an outer shell, an inner shell, a circuit board, a cable, an injection molded package, a mounting spring lock, and an unlocking buckle.
[0003] When high-speed electrical connectors are produced, cables are first welded to the rear end of the circuit board; then a primary injection molding is performed, i.e. the circuit board with the cable is injection molded to form an inner shell that is fixed on the circuit board; then the inner shell with the circuit board is inserted into the inner cavity of the shell from the rear end of the shell; then a secondary injection molding is performed, i.e. the inner cavity of the shell is injection molded to form an injection-molded package that fills the inner cavity of the shell; finally, a spring lock buckle and an unlocking buckle are installed on the front of the shell.
[0004] However, during the secondary injection molding, that is, the process of injecting the inner cavity of the shell, the injection pressure of the secondary injection molding often causes the inner shell and the circuit board to move backward relative to the outer shell, which in turn causes the front end of the circuit board to not extend long enough due to the backward movement of the circuit board relative to the shell, ultimately resulting in defective products. Summary of the invention
[0005] In order to solve the defects of the prior art, the utility model provides a high-speed electrical connector, comprising: an outer shell, an inner shell, and a circuit board, which are sequentially mounted from the outside to the inside; the inner shell is fixedly connected to the circuit board, and the rear end of the circuit board is connected to a cable; the outer shell is provided with an inner cavity for inserting the injection-molded inner shell and the circuit board, and the inner cavity is filled with an injection-molded packaging body;
[0006] The back of the inner shell is provided with a stop buckle, the back of the outer shell is provided with a stop slot matched with the stop buckle, and the stop buckle on the back of the inner shell is correspondingly engaged with the stop slot on the back of the outer shell.
[0007] Preferably, the anti-retraction slot is communicated with the inner cavity of the shell; the injection-molded package body includes a first filling part filling the inner cavity of the anti-retraction slot (the first filling part fills the space in the inner cavity of the anti-retraction slot that is not occupied by the anti-retraction buckle).
[0008] Preferably, the anti-retraction buckle includes: a pair of anti-retraction buckles arranged at both ends of the back side of the inner shell in the width direction; the anti-retraction slot includes: a pair of anti-retraction slots arranged at both ends of the back side of the outer shell in the width direction and corresponding to the pair of anti-retraction buckles one by one; the first filling part includes: a pair of first filling parts arranged at both ends of the injection molding package in the width direction and corresponding to the pair of anti-retraction slots one by one.
[0009] Preferably, the back of the inner shell is further provided with a groove for filling with the injection-molded packaging body; the injection-molded packaging body further comprises a second filling part for filling the groove on the back of the inner shell.
[0010] Preferably, an outer hole facing the groove is further provided on the back of the shell, the outer hole is communicated with the inner cavity of the shell, and the outer hole is also filled with the second filling part.
[0011] Preferably, the groove is located in the middle of the back side of the inner shell in the width direction; the outer hole is located in the middle of the back side of the outer shell in the width direction; and the second filling portion is located in the middle of the injection molding packaging body in the width direction.
[0012] Preferably, the pair of anti-retraction buckles are symmetrically arranged with grooves; the pair of anti-retraction slots are symmetrically arranged with outer holes; and the pair of first filling parts are symmetrically arranged with the second filling parts.
[0013] Preferably, the inner shell is provided with a convex rib on the front side, the injection molded packaging body comprises an inner hole for accommodating the convex rib on the front side of the inner shell, and the convex rib on the front side of the inner shell is fixedly connected with the inner hole of the injection molded packaging body accordingly.
[0014] Preferably, the convex ribs include: a pair of convex ribs arranged at both ends of the inner shell front side in the width direction; the inner holes include: a pair of inner holes arranged at both ends of the injection molding package in the width direction and corresponding to the pair of convex ribs one by one.
[0015] Preferably, the pair of convex ribs are symmetrically arranged; the pair of inner holes are symmetrically arranged.
[0016] The advantages and beneficial effects of the utility model are: providing a high-speed electrical connector, which can prevent the circuit board from moving backward relative to the housing during secondary injection molding, thereby preventing the problem of defective products; and can strengthen the internal structure, thereby improving product quality.
[0017] During the secondary injection molding, that is, during the process of injection molding the inner cavity of the shell, the inner shell is locked by a pair of stop buckles, so the inner shell and the circuit board cannot move backward relative to the shell; therefore, the injection pressure of the secondary injection molding can be prevented from causing the inner shell and the circuit board to move backward relative to the shell, thereby avoiding the problem of insufficient extension of the front end of the circuit board due to the backward movement of the circuit board relative to the shell, which eventually produces defective products;
[0018] In addition, the injection-molded package of the utility model also fills the inner cavity of the anti-retraction card slot on the back of the shell and forms a first filling part. The first filling part fills the space in the inner cavity of the anti-retraction card slot that is not occupied by the anti-retraction buckle, and can fix the clamping state of the anti-retraction buckle and the anti-retraction card slot to prevent the anti-retraction buckle from being disengaged from the anti-retraction card slot, thereby strengthening the clamping connection and further improving the product quality.
[0019] In addition, the injection molded packaging body of the utility model further fills the groove on the back of the inner shell and the outer hole on the back of the outer shell to form a second filling portion, which can strengthen the connection strength between the inner shell, the outer shell and the injection molded packaging body, and can also strengthen the connection strength between the inner shell and the outer shell, and can also further improve the product quality;
[0020] In addition, the injection molded packaging body of the utility model also covers the convex ribs on the front side of the inner shell and forms an inner hole. The convex ribs can also strengthen the connection strength between the inner shell and the injection molded packaging body, and can also further improve the product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the front appearance of a high-speed electrical connector;
[0022] Figure 2 This is an exploded view of the front of a high-speed electrical connector. Figure 2 The spring lock and unlocking buckle have been hidden;
[0023] Figure 3 It is a schematic diagram of the back appearance of a high-speed electrical connector;
[0024] Figure 4 This is an exploded view of the back of a high-speed electrical connector. Figure 4 The spring lock and unlocking buckle have been hidden;
[0025] Figure 5 This is a schematic diagram of the back of the inner shell. DETAILED DESCRIPTION
[0026] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.
[0027] The specific technical solutions implemented in this utility model are as follows:
[0028] like Figures 1 to 5 As shown, a high-speed electrical connector comprises: an outer shell 1, an inner shell 2, and a circuit board 3, which are sequentially mounted from outside to inside; the inner shell 2 is fixedly connected to the circuit board 3, and a cable 4 is connected to the rear end of the circuit board 3; the outer shell 1 is provided with an inner cavity for inserting the injection-molded inner shell 2 and the circuit board 3, and the inner cavity is filled with an injection-molded packaging body 5; the front side of the outer shell 1 is also provided with a spring lock buckle 6 and an unlocking buckle belt 7;
[0029] The inner shell 2 is provided with a pair of retaining buckles 21 at both ends of the inner shell 2 in the width direction, and a groove 22 located in the middle of the inner shell 2 in the width direction and filled with the injection molding package body 5 on the back side; the inner shell 2 is provided with a pair of convex ribs 23 at both ends of the inner shell 2 in the width direction on the front side; the pair of retaining buckles 21 on the back side of the outer shell 1 are symmetrically arranged with the groove 22 on the back side of the outer shell 1; the pair of convex ribs 23 on the front side of the inner shell 2 are symmetrically arranged;
[0030] The back of the shell 1 is provided with: a pair of anti-retraction grooves 11 arranged at both ends of the back of the shell 1 in the width direction and corresponding to the pair of anti-retraction buckles 21, and an outer hole 12 located in the middle of the back of the shell 1 in the width direction, facing the groove 22 on the back of the inner shell 2 and communicating with the inner cavity of the shell 1; the pair of anti-retraction grooves 11 on the back of the shell 1 are symmetrically arranged with the outer hole 12; the pair of anti-retraction grooves 11 on the back of the shell 1 are communicated with the inner cavity of the shell 1, and the pair of anti-retraction buckles 21 on the back of the inner shell 2 are correspondingly engaged with the pair of anti-retraction grooves 11 on the back of the shell 1;
[0031] The injection molded packaging body 5 includes: a pair of first filling parts 51 which are arranged at both ends of the injection molded packaging body 5 in the width direction and fill the inner cavities of a pair of anti-retraction grooves 11 on the back side of the outer shell 1 one by one (the first filling part 51 fills the space in the inner cavity of the anti-retraction groove 11 not occupied by the anti-retraction buckle 21), a second filling part 52 which is located in the middle part of the width direction of the injection molded packaging body 5 and fills the groove 22 on the back side of the inner shell 2 and the outer hole 12 on the back side of the outer shell 1, and a pair of inner holes (the inner holes are not shown in the figures) which are arranged at both ends of the injection molded packaging body 5 in the width direction and accommodate a pair of convex ribs 23 on the front side of the inner shell 2 one by one; the pair of first filling parts 51 of the injection molded packaging body 5 are symmetrically arranged with the second filling parts 52 of the injection molded packaging body 5; the pair of inner holes of the injection molded packaging body 5 are symmetrically arranged; the pair of convex ribs 23 on the front side of the inner shell 2 are fixedly connected to the pair of inner holes of the injection molded packaging body 5 accordingly.
[0032] When producing the high-speed electrical connector of the utility model, the cable 4 is first welded to the rear end of the circuit board 3; then, a primary injection molding is performed, that is, the circuit board 3 with the cable 4 is injection molded to form an inner shell 2 that is sleeved on the circuit board 3; then, the inner shell 2 with the circuit board 3 is inserted into the inner cavity of the outer shell 1 from the rear end of the outer shell 1, until a pair of retaining buckles 21 on the back of the inner shell 2 are correspondingly engaged with a pair of retaining grooves 11 on the back of the outer shell 1; at this time, the groove 22 on the back of the inner shell 2 is directly opposite to the outer hole 12 on the back of the outer shell 1; and the inner shell 2 is locked by the pair of retaining buckles 21, and the inner shell 2 and the circuit board 3 cannot move backward relative to the outer shell 1; then, a secondary injection molding is performed, that is, the outer shell 1 is locked. The inner cavity of the shell 1 is injection molded to form an injection molded packaging body 5 that fills the inner cavity of the outer shell 1; more specifically, during the secondary injection molding, the injection molded packaging body 5 also fills the inner cavity of a pair of anti-retraction grooves 11 on the back of the outer shell 1 to form a pair of first filling parts 51 (the first filling part 51 fills the space in the inner cavity of the anti-retraction groove 11 not occupied by the anti-retraction buckle 21), the injection molded packaging body 5 also fills the groove 22 on the back of the inner shell 2 and the outer hole 12 on the back of the outer shell 1 to form a second filling part 52, and the injection molded packaging body 5 also covers a pair of convex ribs 23 on the front of the inner shell 2 to form a pair of inner holes; after the injection molded packaging body 5 is prepared, the spring lock buckle 6 and the unlocking buckle 7 are installed on the front of the outer shell 1.
[0033] During the secondary injection molding, i.e., during the injection molding of the inner cavity of the outer shell 1, since the inner shell 2 is locked by a pair of stop buckles 21, the inner shell 2 and the circuit board 3 cannot move backward relative to the outer shell 1; therefore, the injection pressure of the secondary injection molding can be prevented from causing the inner shell 2 and the circuit board 3 to move backward relative to the outer shell 1, thereby avoiding the problem that the front end of the circuit board 3 is not extended enough due to the backward movement of the circuit board 3 relative to the outer shell 1, and finally producing defective products;
[0034] In addition, the injection molded package body 5 also fills the inner cavity of the anti-retraction card slot 11 on the back of the shell 1 and forms a first filling portion 51. The first filling portion 51 fills the space in the inner cavity of the anti-retraction card slot 11 that is not occupied by the anti-retraction buckle 21, and can fix the clamping state of the anti-retraction buckle 21 and the anti-retraction card slot 11 to prevent the anti-retraction buckle 21 from being disengaged from the anti-retraction card slot 11, thereby strengthening the clamping connection and further improving the product quality.
[0035] In addition, the injection molded package body 5 also fills the groove 22 on the back of the inner shell 2 and the outer hole 12 on the back of the outer shell 1 to form a second filling portion 52. The second filling portion 52 can strengthen the connection strength between the inner shell 2, the outer shell 1 and the injection molded package body 5, and can also strengthen the connection strength between the inner shell 2 and the outer shell 1, and can also further improve the product quality.
[0036] In addition, the injection molded packaging body 5 also covers the convex rib 23 on the front side of the inner shell 2 and forms an inner hole. The convex rib 23 can also strengthen the connection strength between the inner shell 2 and the injection molded packaging body 5, and can also further improve the product quality.
[0037] As can be seen from the above, the high-speed electrical connector of the utility model can prevent the circuit board 3 from moving backward relative to the housing 1 during secondary injection molding, thereby causing defective products; and can strengthen the internal structure, thereby improving product quality.
[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A high-speed electrical connector, comprising: an outer shell, an inner shell, and a circuit board, which are sequentially mounted from outside to inside; the inner shell is fixedly connected to the circuit board, and the rear end of the circuit board is connected to a cable; the outer shell is provided with an inner cavity for inserting the injection-molded inner shell and the circuit board, and the inner cavity is filled with an injection-molded packaging body; characterized in that: A back side of the inner shell is provided with a stop buckle, and a back side of the outer shell is provided with a stop buckle slot matched with the stop buckle, and the stop buckle is correspondingly engaged with the stop buckle slot.
2. The high-speed electrical connector according to claim 1, characterized in that: The anti-retraction slot is communicated with the inner cavity of the shell; and the injection molding package body comprises a first filling part which fills the inner cavity of the anti-retraction slot.
3. The high-speed electrical connector according to claim 2, characterized in that: The anti-retraction buckle includes: a pair of anti-retraction buckles arranged at both ends of the back side of the inner shell in the width direction; the anti-retraction groove includes: a pair of anti-retraction grooves arranged at both ends of the back side of the outer shell in the width direction; the first filling part includes: a pair of first filling parts arranged at both ends of the injection molding package in the width direction.
4. The high-speed electrical connector according to claim 1, characterized in that: The back of the inner shell is also provided with a groove for filling with the injection molding packaging body; the injection molding packaging body also includes a second filling part for filling the groove.
5. The high-speed electrical connector according to claim 4, characterized in that: The back side of the shell is also provided with an outer hole which is directly opposite to the groove, the outer hole is communicated with the inner cavity of the shell, and the outer hole is also filled with the second filling part.
6. The high-speed electrical connector according to claim 5, characterized in that: The groove is located in the middle of the back side of the inner shell in the width direction; the outer hole is located in the middle of the back side of the outer shell in the width direction; and the second filling portion is located in the middle of the injection molding packaging body in the width direction.
7. The high-speed electrical connector according to claim 3, characterized in that: The pair of anti-retraction buckles are symmetrically arranged with the groove; the pair of anti-retraction slots are symmetrically arranged with the outer holes; and the pair of first filling parts are symmetrically arranged with the second filling parts.
8. The high-speed electrical connector according to claim 1, characterized in that: The front side of the inner shell is provided with a convex rib, the injection molding packaging body comprises an inner hole for accommodating the convex rib, and the convex rib is fixedly connected with the inner hole correspondingly.
9. The high-speed electrical connector according to claim 8, characterized in that: The convex ribs include: a pair of convex ribs arranged at both ends of the inner shell front side in the width direction; the inner hole includes: a pair of inner holes arranged at both ends of the injection molding packaging body in the width direction.
10. The high-speed electrical connector according to claim 9, characterized in that: The pair of convex ribs are symmetrically arranged; the pair of inner holes are symmetrically arranged.