Injection molding terminal

By designing injection molded terminals and using the combined structure of the shell and fixture, the hydrogestation problem of electronic and electrical devices in the new energy power supply system is solved, and stable electrical connections and safety improvements are achieved.

CN223309260UActive Publication Date: 2025-09-05JILIN ZHONG YING HIGH TECH CO LTD
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Patent Information

Application Number
CN202422501262.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-16
Publication Date
2025-09-05
Estimated Expiration
2034-10-16

AI Technical Summary

Technical Problem

Traditional electronic and electrical devices are susceptible to water erosion in new energy power supply systems, resulting in polar short circuits, electric shock or fire, and the terminals and connecting wires are prone to fall off, posing a connection safety hazard.

Method used

An injection molded terminal is designed, including a housing, a connecting terminal and a fixing member. The connection terminal is protected by the injection molded housing, and fixed to the vehicle body with a fixing member, and combined with a seal to prevent water from entering, ensuring a stable electrical connection.

Benefits of technology

It realizes a stable electrical connection of the connection terminals during vehicle driving, prevents water erosion, avoids polar short circuits and fires, and improves the safety and reliability of the connection.

✦ Generated by Eureka AI based on patent content.

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Abstract

A shell comprises a cylindrical main body and a fixed part connected with the outer side wall of the main body, the fixed part is internally provided with a through hole penetrating into the main body, the inner wall of the main body is circumferentially provided with a step ring protruding inwards, and the step ring is internally provided with an axial first through hole; the connecting terminal comprises a head component and a tail component which are connected in sequence, one end of the head component is attached to one side face of the step ring and provided with a second through hole, and the other end extends out of the main body through the through hole and is connected with the tail component; the fixing piece comprises a fixing cap with the large diameter and a screw joint rod, the side, facing the screw joint rod, of the fixing cap is provided with a step face, the screw joint rod sequentially penetrates through the second through hole and the first through hole, and the step face is attached to the head component. By means of the scheme, water can be prevented from making contact with the connecting terminal, and it is guaranteed that the connecting terminal is stably and electrically connected to the butt-joint terminal located on one side of the vehicle body in the vehicle running process through the fixing piece; and the shell comprises the cylindrical main body, so that the injection molding terminal is convenient to assemble and disassemble.
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Description

Technical Field

[0001] The utility model relates to the technical field of electrical connection, and more particularly to an injection-molded terminal. Background Art

[0002] With the development of electric vehicles, more and more electronic components are installed on the vehicle. Traditional electronic components are powered directly by batteries, while current new energy sources are powered by power batteries, which are then supplied to automotive electronic components via DCDC converters. Current DCDC converters are located outdoors and are susceptible to water damage or immersion, which can cause polarity short circuits, electric shocks, or fires. They are also susceptible to oxidation and rust, which can cause separation or detachment of terminals and connecting wires. This poses a safety hazard to connections.

[0003] Therefore, how to provide an injection-molded terminal that is waterproof and easy to install has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0004] One purpose of the utility model is to provide a new technical solution for injection-molded terminals.

[0005] According to a first aspect of the present invention, there is provided an injection-molded terminal, comprising:

[0006] A housing, the housing comprising a cylindrical main body and a fixing portion connected to an outer wall of the main body, the fixing portion being provided with a through hole penetrating into the main body, an inwardly protruding step ring being provided circumferentially on an inner wall of the main body, and a first axial through hole being provided in the step ring;

[0007] A connecting terminal, comprising a head member and a tail member connected in sequence, wherein one end of the head member is in contact with a side surface of the step ring and is provided with a second through hole, and the other end extends out of the main body through the through hole and is connected to the tail member;

[0008] The fixing part includes a fixing cap with a larger diameter and a screw rod. The fixing cap has a step surface on the side facing the screw rod. The screw rod passes through the second through hole and the first through hole in sequence. The step surface is in contact with the head component.

[0009] Optionally, a recessed mounting groove is provided on one side of the step ring that is in contact with the head component, the mounting groove is communicated with the through hole, and at least a portion of the head component is embedded in the mounting groove.

[0010] Optionally, the first through hole and the second through hole are concentrically arranged, and the inner diameter of the first through hole is greater than or equal to the inner diameter of the second through hole.

[0011] Optionally, a cover is further included, which is detachably covered on the end surface of the main body on the side where the fixing cap is provided.

[0012] Optionally, the cover body includes a cover edge sleeved on the end of the main body on the side where the fixing cap is provided, and a cover plate connected to the end face of the cover edge and closing the end face of the main body.

[0013] Optionally, a sealing member is further included, and the sealing member is arranged between the cover and the shell.

[0014] Optionally, the cover plate protrudes and extends toward the inside of the main body to form an annular positioning member, and the sealing member is constructed as a cylindrical structure, the outer peripheral wall of the cylindrical structure fits with the inner wall of the main body, and the inner peripheral wall of the cylindrical structure fits with the outer wall of the annular positioning member.

[0015] Optionally, the sealing member and the cover body are integrally formed by a two-color injection molding process, and a plurality of circumferential convex rings are axially spaced apart on the outer peripheral wall of the sealing member.

[0016] Optionally, the outer peripheral wall of the main body is provided with a plurality of first clamping parts, and the cover is circumferentially provided with second clamping parts matching the first clamping parts, and the first clamping parts cooperate with the second clamping parts to fix the cover body to the shell.

[0017] Optionally, a connecting piece is further included, which is made of an elastic material, one end of which is connected to the cover body, and the other end of which is connected to the shell.

[0018] An injection-molded terminal according to the present disclosure has the following beneficial effects:

[0019] By injection-molding a shell and a fixing part around the periphery of the head component of the connecting terminal, water can be prevented from contacting the connecting terminal. The injection-molded terminal is fixed to the vehicle body by a fixing part, ensuring that the connecting terminal is stably electrically connected to the docking terminal located on one side of the vehicle body during driving of the vehicle. Moreover, the cylindrical main body included in the shell can conveniently fix the injection-molded terminal to the vehicle body through the fixing part, thereby facilitating the assembly and disassembly of the injection-molded terminal.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0022] Figure 1 A schematic diagram of the structure of an injection-molded terminal according to a preferred embodiment of the present invention;

[0023] Figure 2A top view of an injection-molded terminal according to a preferred embodiment of the present invention;

[0024] Figure 3 for Figure 2 Cross-section at AA in the middle;

[0025] Figure 4 is a structural schematic diagram of the shell;

[0026] Figure 5 It is a schematic diagram of the structure after the housing and connecting terminals are assembled;

[0027] Figure 6 This is another structural schematic diagram after the housing and connecting terminals are assembled.

[0028] The following are marked in the figure:

[0029] Shell-10; 11-main body; 12-fixing part; 13-through hole; 14-connecting terminal; 15-head member; 16-tail member; 17-step ring; 18-first through hole; 19-second through hole; 20-fixing member; 21-fixing cap; 22-screw rod; 23-mounting groove; 24-cover body; 25-cover edge; 26-cover plate; 27-sealing member; 28-annular positioning member; 29-circumferential convex ring; 30-first clamping part; 31-second clamping part; 32-connecting member; 33-first connecting through hole; 34-second connecting through hole; 35-assembly part; 36-step surface. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0034] According to a disclosed injection-molded terminal, Figures 1 to 6 Shown, including,

[0035] The housing 10 includes a cylindrical main body 11 and a fixing portion 12 connected to the outer wall of the main body 11. The fixing portion 12 is provided with a through hole 13 extending into the main body 11. The main body 11 is circumferentially provided with an inwardly protruding step ring 17 on the inner wall. The step ring 17 is provided with a first axial through hole 18.

[0036] The connecting terminal 14 includes a head member 15 and a tail member 16 connected in sequence. One end of the head member 15 is in contact with a side surface of the step ring 17 and is provided with a second through hole 19. The other end of the head member 15 extends out of the main body 11 through the through hole 13 and is connected to the tail member 16.

[0037] The fixing part 20 includes a fixing cap 21 with a larger diameter and a screw rod 22. The fixing cap 21 has a step surface facing the screw rod 22. The screw rod 22 passes through the second through hole 19 and the first through hole 18 in sequence. The step surface is in contact with the head component 15.

[0038] By injection-molding the shell 10 and the fixing part 12 around the head component 15 of the connecting terminal 14, water can be prevented from contacting the connecting terminal 14, and the injection-molded terminal is fixed to the vehicle body through the fixing part 20, ensuring that the connecting terminal 14 is stably electrically connected to the docking terminal located on one side of the vehicle body during driving of the vehicle; and the cylindrical main body 11 included in the shell 10 can facilitate fixing the injection-molded terminal to the docking terminal at a predetermined position of the vehicle body through the fixing part 20, thereby facilitating the assembly and disassembly of the injection-molded terminal.

[0039] In specific implementation, the length of the screw rod 22 can be set to protrude out of the main body 11 through the first through hole 18 and the second through hole 19, so as to better connect the head component 15 of the connecting terminal 14 with the docking terminal on the vehicle body.

[0040] The fixing portion 12 may be provided with at least one bent portion according to actual needs to facilitate the connection between the tail component 16 and the docking wire.

[0041] According to one embodiment of a disclosed injection-molded terminal, a recessed mounting groove 23 is provided on one side of the step ring 17 that contacts the head member 15. The mounting groove 23 communicates with the through-hole 13, and at least a portion of the head member 15 is embedded in the mounting groove 23. The mounting groove 23 positions the head member 15, preventing the head terminal from shaking within the housing 10 and shortening the service life of the injection-molded terminal.

[0042] According to one embodiment of a disclosed injection-molded terminal, the first through-hole 18 and the second through-hole 19 are concentrically arranged, and the inner diameter of the first through-hole 18 is equal to or greater than the inner diameter of the second through-hole 19. This allows the butt terminal located on one side of the vehicle body to contact the head member 15 via the first through-hole 18, and the fixing member 20 to connect to the butt terminal located within the first through-hole 18 via the second through-hole 19, thereby securing the injection-molded terminal to the vehicle body.

[0043] According to one embodiment of the disclosed injection-molded terminal, a cover 24 is further included, which detachably covers the end surface of the main body 11 on the side where the fixing cap 21 is provided. The cover 24 prevents water from entering the housing 10 through the top opening of the cylindrical main body 11.

[0044] Specifically, the cover 24 includes a cover edge 25 that is sleeved onto the end of the main body 11 on the side where the fixing cap 21 is provided, and a cover plate 26 that is connected to the end face of the cover edge 25 and seals the end face of the main body 11. The cover edge 25 serves as a guide during the assembly of the cover 24 into the housing 10 and also prevents water from entering the housing 10 through the top opening of the cylindrical main body 11 to a certain extent, thereby providing a waterproof effect.

[0045] More specifically, a seal 27 is provided between the cover 24 and the housing 10. The seal 27 prevents water from entering the housing 10 through the gap between the cover 24 and the housing 10, thereby preventing a polarity short circuit, electric shock, or fire. It also prevents oxidation and rusting of the connection terminals 14, which could pose a safety hazard.

[0046] More specifically, the cover plate 26 protrudes and extends toward the interior of the main body 11 to form an annular positioning member 28. The sealing member 27 is constructed as a cylindrical structure, the outer peripheral wall of which is in contact with the inner wall of the main body 11, and the inner peripheral wall of the cylindrical structure is in contact with the outer wall of the annular positioning member 28. This prevents the sealing member 27 from shifting, resulting in the sealing member 27 not being firmly clamped between the interior of the main body 11 and the outer wall of the annular positioning member 28, and thus preventing water from entering the housing 10.

[0047] During specific implementation, an annular positioning member 28 is formed by protruding from the lower surface of the cover plate 26. There is a gap between the annular positioning member 28 and the fixing member 20 in the installed state and the step ring 17. The two sides of the sealing member 27 are clamped between the annular positioning member 28 and the main body 11, and the two ends of the sealing member 27 abut between the cover plate 26 and the step ring 17.

[0048] More specifically, the seal 27 and the cover 24 are integrally formed by a two-color injection molding process, and a plurality of circumferential protrusions 29 are axially spaced apart on the outer peripheral wall of the seal 27. The plurality of circumferential protrusions 29 provide a step-by-step waterproofing effect, thereby strengthening the waterproof function of the seal 27.

[0049] Specifically, the outer peripheral wall of the main body 11 is provided with a plurality of first retaining portions 30, and the cover 25 is circumferentially provided with second retaining portions 31 that match the first retaining portions 30. The first retaining portions 30 cooperate with the second retaining portions 31 to secure the cover 24 to the housing 10. The first retaining portions 30 cooperate with the second retaining portions 31 to achieve a detachable connection between the housing 10 and the cover 24.

[0050] According to an embodiment of the disclosed injection-molded terminal, a connecting member 32 is further included. The connecting member 32 is made of an elastic material. One end of the connecting member 32 is connected to the cover 24 , and the other end is connected to the housing 10 .

[0051] In specific implementation, through a first connecting hole 33 provided on the cover body 24, a second connecting hole 34 provided on the shell 10, and a connecting member 32 made of elastic material, the connecting member 32 forms a locking of the cover body 24 relative to the shell 10 via the first connecting hole 33 and the second connecting hole 34.

[0052] In specific implementation, the main body 11 also includes an assembly portion arranged on the opposite side of the step ring 17 and the cover body 24, and the vehicle body is provided with a docking portion for assembling the docking terminal. When the docking portion enters the assembly portion, the docking terminal is electrically connected to the head component 15 of the connecting terminal 14 via the first through hole 18.

[0053] In a specific implementation, it also includes an assembly part arranged opposite to the main body 11 regarding the step ring 17, and the vehicle body is provided with a docking part for assembling the docking terminal. When the docking part enters the assembly part, the docking terminal is electrically connected to the head component 15 of the connecting terminal 14 via the first through hole 18.

[0054] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An injection-molded terminal, characterized in that: include, A housing, the housing comprising a cylindrical main body and a fixing portion connected to an outer wall of the main body, the fixing portion being provided with a through hole penetrating into the main body, an inwardly protruding step ring being provided circumferentially on an inner wall of the main body, and a first axial through hole being provided in the step ring; A connecting terminal, comprising a head member and a tail member connected in sequence, wherein one end of the head member is in contact with a side surface of the step ring and is provided with a second through hole, and the other end extends out of the main body through the through hole and is connected to the tail member; The fixing part includes a fixing cap with a larger diameter and a screw rod. The fixing cap has a step surface on the side facing the screw rod. The screw rod passes through the second through hole and the first through hole in sequence. The step surface is in contact with the head component.

2. The injection-molded terminal according to claim 1, characterized in that: A recessed mounting groove is provided on one side of the step ring that is in contact with the head component. The mounting groove is communicated with the through hole, and at least a portion of the head component is embedded in the mounting groove.

3. The injection-molded terminal according to claim 1, characterized in that: The first through hole and the second through hole are concentrically arranged, and the inner diameter of the first through hole is greater than or equal to the inner diameter of the second through hole.

4. The injection-molded terminal according to claim 1, wherein: It also includes a cover body, which is detachably covered on the end surface of the main body on the side where the fixing cap is provided.

5. The injection-molded terminal according to claim 4, characterized in that: The cover body comprises a cover edge sleeved on the end of the main body on a side where the fixing cap is provided, and a cover plate connected to the end surface of the cover edge and closing the end surface of the main body.

6. The injection-molded terminal according to claim 5, characterized in that: A sealing member is also included, and the sealing member is arranged between the cover and the shell.

7. The injection-molded terminal according to claim 6, characterized in that: The cover plate protrudes and extends toward the interior of the main body to form an annular positioning member. The sealing member is constructed as a cylindrical structure. The outer peripheral wall of the cylindrical structure fits with the inner wall of the main body, and the inner peripheral wall of the cylindrical structure fits with the outer wall of the annular positioning member.

8. The injection-molded terminal according to claim 7, characterized in that: The sealing member and the cover body are integrally formed by a two-color injection molding process, and a plurality of circumferential convex rings are axially spaced apart on the outer peripheral wall of the sealing member.

9. The injection-molded terminal according to claim 5, characterized in that: The outer peripheral wall of the main body is provided with a plurality of first holding portions, and the cover is circumferentially provided with second holding portions matching the first holding portions, and the first holding portions cooperate with the second holding portions to fix the cover to the shell.

10. The injection-molded terminal according to claim 4, characterized in that: It also includes a connecting piece, which is made of elastic material. One end of the connecting piece is connected to the cover body, and the other end is connected to the shell.