Wire connecting terminal adopting reverse clamping structure
By adopting a reverse clamping structure and elastic protrusion design on the wire connection terminals, the problems of wire disconnection from the metal terminal, irreversible disassembly of the clamping connection and the metal terminal shaking in the existing wire connection terminals are solved, achieving more stable connection and more convenient maintenance.
Patent Information
- Application Number
- CN202421916793.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-08
AI Technical Summary
The single-sided single-cluster slot clamping method of existing wire connection terminals has problems such as disengagement of the wire from the metal terminal, irreversible disassembly of the clamping structure, and shaking between the metal terminal and the insulated shell, which affects the stability and maintenance convenience of the electrical connection.
The wire connection terminals using the reverse clamping structure are provided with connecting holes and long grooves through the insulated shell, and casing clamping sections, wire core rivet pressing sections and line leather rivet pressing sections on the metal terminals. Combined with the one-way elastic protrusion and the inclined abutment projection, the clamping cooperation between the metal terminals and the insulated shell is realized, and the shaking of the metal terminals is restricted by the inclined force, and the open long grooves are designed for easy disassembly.
It improves the connection between the wire and the metal terminal, avoids wire disconnection and electrical failure, realizes the stable fixation of the metal terminal, enhances the user experience, and simplifies the disassembly process through open long slots, reducing maintenance costs and equipment downtime.
Smart Images
Figure CN222980807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wire connection terminals, in particular to a wire connection terminal adopting a reverse clamping structure. Background Art
[0002] In today's highly electrified society, the safety and stability of electrical connections are of vital importance. Among the many electrical connection methods, the solution of riveting metal terminals on wires and wrapping them with insulating shells is widely used. As one of the common assembly forms, the single-side single-hook card slot connection has its unique characteristics in practical applications. Take small household appliances as an example, such as common chandeliers, small fans, etc., which often use this method for internal wire connections. A card slot is carefully designed on one side of the insulating shell, and a card hook is set at the corresponding position of the metal terminal. When assembling, the worker accurately inserts the metal terminal into the insulating shell so that the card hook is smoothly embedded in the card slot, thereby achieving a stable fixed connection. This structure is relatively simple, does not require complex tools and cumbersome operating procedures, and the assembly operation is relatively convenient. This improves production efficiency to a certain extent, and can also meet the initial fixing needs of these small household appliances to a certain extent. However, in actual use, this single-side single-hook card slot connection method gradually exposes some significant problems.
[0003] First of all, from the connection between the wire and the metal terminal, the metal terminal is usually tightly combined with the wire core inside the wire by riveting. However, after long-term use, due to repeated current flow causing heat, or when a large pulling force is accidentally applied, the wire core inside the wire and the metal terminal are very likely to separate. This will not only affect the normal transmission of current, but may also cause electrical faults such as short circuits and open circuits. In severe cases, it may even cause damage to electrical equipment or cause safety accidents.
[0004] Secondly, the clamping structure between the metal terminal and the insulating housing has serious limitations. Once the clamping is completed, it cannot be disassembled, or the disassembly process is irreversible, which will inevitably cause damage to the components. This brings great inconvenience to subsequent maintenance, overhaul or component replacement, which not only increases the maintenance cost, but also may prolong the downtime of the equipment due to the complexity of the maintenance operation.
[0005] Furthermore, in order to achieve the snap-in fixation of the slot and the hook, the hook is generally set to have a certain deformation force, and the slot needs to use the hook to produce a slight deformation after deformation. Therefore, the structure of the slot will be slightly larger than the structure of the hook, which will result in a certain degree of flexibility between the slot and the hook after snap-in, resulting in a certain amount of shaking between the metal terminal and the insulating shell, which gives users the illusion that the fixation is not secure.
[0006] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content
[0007] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.
[0008] A wire connection terminal adopting a reverse clamping structure comprises an insulating shell and a metal terminal clamped and matched with the insulating shell, the insulating shell is provided with a penetrating connection hole, the metal terminal comprises a shell clamping section docked with the connection hole, a wire core riveting section formed at the rear of the shell clamping section, and a wire skin riveting section formed at the rear of the wire core riveting section, a unidirectional elastic protrusion and an inclined surface abutting protrusion are formed on the outer side of the shell clamping section, a long groove for accommodating the unidirectional elastic protrusion and the inclined surface abutting protrusion is provided on the inner side of the connection hole, the long groove penetrates the insulating shell, a clamping boss is provided in the long groove, and the rear part of the clamping boss has an inclined surface guiding part, wherein the unidirectional elastic protrusion is clamped in front of the clamping boss after being elastically deformed along the guidance of the inclined surface guiding part, and the inclined surface abutting protrusion abuts and matches with the inclined surface guiding part.
[0009] Preferably, the shell snap-on section includes a snap-on base and elastic sheets formed on both sides of the snap-on base and bent upward, the snap-on base and the two elastic sheets form an elastic socket-like structure, and the unidirectional elastic protrusion and the inclined abutment protrusion are both formed at the lower end of the snap-on base.
[0010] Preferably, the rear end of the elastic sheet is integrally connected to the clamping substrate, the front end of the elastic sheet is separated from the clamping substrate by a gap, and the front end of the elastic sheet is concavely arranged.
[0011] Preferably, the wire core riveting section includes a wire core substrate and wire core riveting sheets formed on both sides of the wire core substrate, and the wire core substrate is integrally connected to the shell clamping section.
[0012] Preferably, a plurality of concave lines extending to the wire core riveting sheet are transversely arranged on the wire core substrate.
[0013] Preferably, the wire skin riveting section includes a wire skin substrate and wire skin riveting sheets formed on both sides of the wire skin substrate, and the wire skin substrate is integrally connected to the wire core riveting section.
[0014] Preferably, there are transition sections between the shell clamping section and the wire core riveting section and between the wire core riveting section and the wire skin riveting section.
[0015] Preferably, a blocking ring is provided at the front position of the connecting hole of the insulating housing, the front end of the metal terminal is abutted against the blocking ring, and the long groove runs through the blocking ring.
[0016] Preferably, the inner side of the blocking ring is provided with a chamfered surface.
[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0018] Through the unidirectional elastic convex part, the elastic acting force can be used to overcome the inclined surface guiding part and then enter the front end of the clamping boss for abutting cooperation, so as to realize the clamping cooperation between the metal terminal and the insulating shell. On this basis, the inclined surface abutting convex part and the inclined surface guiding part are used for tight abutting cooperation to restrict the metal terminal in the insulating shell by the inclined surface acting force without shaking, thus restricting the flexibility of the metal terminal after being clamped into the insulating shell and improving the use experience;
[0019] The wire core riveting section and the wire skin riveting section are respectively used for riveting the wire core and the wire skin of the wire. After the wire is peeled, the end of the outer insulating layer needs to be riveted on the wire skin riveting section, and then the wire core is riveted on the wire core riveting section. Through this fixing method, the connection firmness between the wire and the metal terminal can be greatly improved, so as to ensure the normal transmission of current and prevent electrical faults such as disconnection and short circuit caused by detachment;
[0020] By providing a long groove that penetrates the insulating shell, while using the long groove to set the clamping boss, the front end of the long groove is also an open structure. Users can insert a needle-like object into the long groove at the front end of the insulating shell to push the unidirectional elastic convex part on the metal terminal to disengage from the clamping boss, thereby completing the disassembly operation between the metal terminal and the insulating shell. Through this setting, it can bring great convenience to the subsequent maintenance, repair or component replacement of the wire connection terminal, thereby reducing the maintenance cost, and can also be quickly processed to ensure that the equipment quickly resumes its working state and reduce the chain troubles caused by equipment shutdown.
[0021] In summary, the metal terminal uses the elastic acting force to cooperate with the inclined surface guiding part through the unidirectional elastic convex part to realize clamping with the insulating shell. The inclined surface abutting convex part and the inclined surface guiding part tightly restrict the shaking of the metal terminal and improve the use experience. The wire core riveting section and the wire skin riveting section respectively rivet the wire core and the wire skin of the wire to improve the connection firmness and ensure current transmission. The insulating shell is provided with a penetrating long groove and a clamping boss, and the front end is open. Users can insert a needle-like object into the long groove to push out the unidirectional elastic convex part to complete the disassembly, which brings convenience to subsequent maintenance, etc., reduces the cost and ensures that the equipment quickly resumes working.
[0022] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] 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 labor.
[0024] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model in the state of connecting the wires;
[0025] Figure 2 It is a schematic diagram of the side structure of the metal terminal in the utility model when it is not riveted;
[0026] Figure 3 This utility model Figure 2 Schematic diagram of the structure in cross-section state;
[0027] Figure 4 It is a schematic diagram of the top view of the structure of the metal terminal in the utility model when it is not riveted;
[0028] Figure 5 This is a schematic diagram of the front structure of the metal terminal in the utility model when it is not riveted;
[0029] Figure 6 It is a schematic diagram of the top view of the structure of the metal terminal in the riveted state of the utility model;
[0030] Figure 7 This is a perspective structural diagram of the insulating housing in the utility model;
[0031] Figure 8 It is a structural schematic diagram of the insulating housing in the utility model from another perspective;
[0032] Figure 9 It is a schematic diagram of the cross-sectional structure of the insulating shell in the utility model.
[0033] The reference numerals and names in the figures are as follows:
[0034] Insulating shell 10, connecting hole 11, long groove 12, snap-on boss 13, inclined guide portion 14, blocking ring 15, metal terminal 20, shell snap-on section 21, snap-on substrate 211, elastic sheet 212, wire core riveting section 22, wire core substrate 221, wire core riveting sheet 222, concave pattern 223, wire skin riveting section 23, wire skin substrate 231, wire skin riveting sheet 232, unidirectional elastic protrusion 24, inclined abutting protrusion 25, transition section 26. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0036] Please refer to Figures 1-9 , in the embodiment of the present invention, a wire connection terminal adopting a reverse clamping structure includes an insulating housing 10 and a metal terminal 20 clamped and matched with the insulating housing 10. The insulating housing 10 is provided with a through connection hole 11. The metal terminal 20 has a housing clamping section 21 docked with the connection hole 11, a wire core riveting section 22 formed at the rear of the housing clamping section 21, and a wire sheath riveting section 23 formed at the rear of the wire core riveting section 22. A one-way elastic protrusion 24 and an inclined surface abutting protrusion 25 are formed on the outer side of the housing clamping section 21. A long groove 12 for accommodating the one-way elastic protrusion 24 and the inclined surface abutting protrusion 25 is opened inside the connection hole 11. The long groove 12 penetrates through the insulating housing 10. A clamping boss 13 is provided in the long groove 12, and the rear of the clamping boss 13 has an inclined surface guiding portion 14. Among them, the one-way elastic protrusion 24 is elastically deformed along the guiding of the inclined surface guiding portion 14 and then clamped in front of the clamping boss 13, and the inclined surface abutting protrusion 25 is in abutting cooperation with the inclined surface guiding portion 14.
[0037] In the above technical solution, by setting the structure in which the metal terminal 20 is clamped and connected with the insulating housing 10, the metal terminal 20 is used for electrically connecting and fixing the wire, so that the end of the wire can be clamped and fixed with the insulating housing 10 after the metal terminal 20 is provided, thereby forming a structure in which the wire connection female terminal is connected with the matching wire connection male terminal.
[0038] The metal terminal 20 is provided with a housing clamping section 21, a wire core riveting section 22 and a wire sheath riveting section 23. The housing clamping section 21 is set to match the connection hole 11 on the insulating housing 10, and a one-way elastic protrusion 24 and an inclined surface abutting protrusion 25 are provided to dock with the clamping boss 13. Among them, the one-way elastic protrusion 24 can overcome the inclined surface guiding portion 14 by using the elastic force and then enter the front end of the clamping boss 13 for abutting cooperation, realizing the clamping cooperation between the metal terminal 20 and the insulating housing 10. On this basis, the inclined surface abutting protrusion 25 and the inclined surface guiding portion 14 are in tight abutting cooperation to restrict the metal terminal 20 in the insulating housing 10 by the inclined surface acting force without shaking, thereby restricting the flexibility of the metal terminal 20 after being clamped into the insulating housing 10 and improving the use experience;
[0039] The core riveting section 22 and the wire skin riveting section 23 are respectively used for riveting the core and the wire skin of the wire. After the wire is peeled, the end of the outer insulation layer needs to be riveted on the wire skin riveting section 23, and then the core is riveted on the core riveting section 22. Through this fixing method, the connection firmness between the wire and the metal terminal 20 can be greatly improved, thus ensuring the normal transmission of current and preventing electrical faults such as short circuits and open circuits caused by detachment;
[0040] In addition, by providing the long slot 12 which penetrates through the insulating housing 10, while using the long slot 12 to provide the clamping boss 13, the front end of the long slot 12 is also an open structure. Users can insert a needle-like object into the long slot 12 at the front end of the insulating housing 10 to push the one-way elastic protrusion 24 on the metal terminal 20 to disengage from the clamping boss 13, thereby completing the disassembly operation between the metal terminal 20 and the insulating housing 10. Through this setting, it can bring great convenience to the subsequent maintenance, repair or component replacement work of this wire connection terminal, thereby reducing the maintenance cost, and can also be quickly processed to ensure that the equipment quickly resumes its working state and reduce the chain troubles caused by equipment shutdown.
[0041] Please refer to Figures 4-6 , in the embodiment of the present utility model, it is further proposed that the housing clamping section 21 includes a clamping substrate 211 and elastic sheets 212 formed on both sides of the clamping substrate 211 and bent upward. The clamping substrate 211 and the two elastic sheets 212 form an elastic jack-shaped structure for plugging and matching with a mating wire connection male terminal. The one-way elastic protrusion 24 and the inclined surface abutting protrusion 25 are both formed at the lower end of the clamping substrate 211. This structural setting is simple and ingenious and convenient for processing; in addition, it is further proposed that the rear end of the elastic sheet 212 is integrally connected to the clamping substrate 211, and there is a gap between the front end of the elastic sheet 212 and the clamping substrate 211, and the front end of the elastic sheet 212 is concave. Through this setting, a certain elastic damping force can be brought during the process of plugging and matching with the wire connection male terminal, so that the wire connection male terminal and the wire connection female terminal can be firmly connected.
[0042] Please refer to Figures 4-6In the embodiment of the utility model, it is further proposed that the wire core riveting section 22 includes a wire core substrate 221 and wire core riveting sheets 222 formed on both sides of the wire core substrate 221. The wire core substrate 221 is integrally connected with the shell clamping section 21. Before riveting, the wire core riveting sheets 222 on both sides are in an open state, and the wire core of the wire can be directly placed on the wire core substrate 221. After the metal terminal 20 and the wire core of the wire are positioned, the riveting is performed by a riveting machine to complete the riveting of the wire core. The operation is simple, and the wire cores on both sides will not overlap after riveting, ensuring that the wire core is firmly pressed. ; In addition, it is further proposed that a plurality of concave lines 223 extending to the wire core rivet pressing sheet 222 are horizontally arranged on the wire core substrate 221. Through this arrangement, the friction between the wire core and the wire core substrate 221 can be greatly improved, thereby further ensuring that the wire core will not be pulled out of the metal terminal 20; similarly, the wire skin riveting section 23 includes a wire skin substrate 231 and wire skin riveting pressing sheets 232 formed on both sides of the wire skin substrate 231. The wire skin substrate 231 is integrally connected with the wire core riveting section 22, and its riveting operation is basically the same as the riveting operation of the wire core, and can be riveted simultaneously.
[0043] Please refer to Figures 2-6 In the embodiment of the utility model, it is further proposed that a transition section 26 is provided between the shell clamping section 21 and the wire core riveting section 22 and between the wire core riveting section 22 and the wire skin riveting section 23. Through this arrangement, a certain spacing can be provided for the wire core riveting sheet 222 and the wire skin riveting sheet 232 to ensure that they will not conflict with each other during their activities.
[0044] Please refer to Figure 1 , Figure 7 , Figure 8 and Figure 9 In the embodiment of the utility model, it is further proposed that a blocking ring 15 is provided at the front position of the connecting hole 11 of the insulating housing 10, the front end of the metal terminal 20 is abutted against the blocking ring 15, and the long groove 12 passes through the blocking ring 15 to prevent the metal terminal 20 from passing through the entire insulating housing 10; the inner side of the blocking ring 15 is provided with a chamfered surface to facilitate the insertion of the male terminal of the wire connection.
[0045] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.
Claims
1. A wire connection terminal with a reverse clamping structure, comprising an insulating housing (10) and a metal terminal (20) clamped to the insulating housing (10), characterized in that: The insulating housing (10) is provided with a connecting hole (11) extending therethrough, the metal terminal (20) comprising a housing clamping section (21) butted against the connecting hole (11), a wire core riveting section (22) formed at the rear of the housing clamping section (21), and a wire skin riveting section (23) formed at the rear of the wire core riveting section (22), a unidirectional elastic protrusion (24) and an inclined surface abutting protrusion (25) are formed on the outer side of the housing clamping section (21), and a unidirectional elastic protrusion (24) and an inclined surface abutting protrusion (25) are formed on the inner side of the connecting hole (11). The long groove (12) includes an elastic protrusion (24) and an inclined surface abutting protrusion (25), the long groove (12) penetrates the insulating housing (10), a clamping boss (13) is arranged in the long groove (12), and a rear portion of the clamping boss (13) has an inclined surface guiding portion (14), wherein the unidirectional elastic protrusion (24) is elastically deformed along the guidance of the inclined surface guiding portion (14) and is clamped in front of the clamping boss (13), and the inclined surface abutting protrusion (25) is abutted and matched with the inclined surface guiding portion (14).
2. A wire connection terminal with a reverse clamping structure according to claim 1, characterized in that: The housing clamping section (21) comprises a clamping base sheet (211) and elastic sheets (212) formed on both sides of the clamping base sheet (211) and bent upwards, the clamping base sheet (211) and the two elastic sheets (212) forming an elastic socket-shaped structure, and the unidirectional elastic protrusion (24) and the inclined surface abutting protrusion (25) are both formed at the lower end of the clamping base sheet (211).
3. A wire connection terminal with a reverse clamping structure according to claim 2, characterized in that: The rear end of the elastic sheet (212) is integrally connected to the clamping base sheet (211), the front end of the elastic sheet (212) is separated from the clamping base sheet (211) by a gap, and the front end of the elastic sheet (212) is concavely arranged.
4. The wire connection terminal with a reverse clamping structure according to claim 1, characterized in that: The wire core riveting section (22) comprises a wire core substrate (221) and wire core riveting sheets (222) formed on both sides of the wire core substrate (221); the wire core substrate (221) is integrally connected to the housing clamping section (21).
5. A wire connection terminal with a reverse clamping structure according to claim 4, characterized in that: A plurality of concave patterns (223) extending to the wire core riveting sheet (222) are arranged transversely on the wire core substrate (221).
6. The wire connection terminal with a reverse clamping structure according to claim 1, characterized in that: The wire skin riveting section (23) comprises a wire skin base sheet (231) and wire skin riveting sheets (232) formed on both sides of the wire skin base sheet (231); the wire skin base sheet (231) is integrally connected to the wire core riveting section (22).
7. The wire connection terminal with a reverse clamping structure according to claim 1, characterized in that: A transition section (26) is provided between the shell clamping section (21) and the wire core riveting section (22), and between the wire core riveting section (22) and the wire skin riveting section (23).
8. The wire connection terminal with a reverse clamping structure according to claim 1, characterized in that: A blocking ring (15) is provided on the insulating housing (10) at a front position of the connecting hole (11); the front end of the metal terminal (20) is in abutment with the blocking ring (15), and the long groove (12) passes through the blocking ring (15).
9. The wire connection terminal with a reverse clamping structure according to claim 8, characterized in that: The inner side of the blocking ring (15) is provided with an inclined chamfer.