Buckle type wire harness structure

Abstract

The utility model relates to a buckle type wire harness structure, which comprises a shell, an inner framework, a lock catch, a metal terminal and a lead, the housing is provided with a terminal channel and a chute. The top of the housing is provided with a clamping groove, and the bottom of the housing is provided with a first positioning hole. The inner frame is provided with a terminal groove. And each terminal groove is provided with a limiting block and a digital identifier. And the inner framework is also provided with a second positioning hole. The lock catch comprises a transverse rod and a positioning rod. And the positioning rod firstly penetrates through the second positioning hole and then penetrates into the first positioning hole. The metal terminal is provided with a side wing. The side wings are clamped between the rear ends of the terminal channels and the front ends of the limiting blocks. The installation position of each metal terminal is identified through the digital identifier, so that the risk that an operator inserts a terminal slot by mistake during assembly is reduced, and visual inspection is facilitated. Meanwhile, a traditional elastic sheet structure is abandoned, the metal terminal is positioned in a limiting and buckling combined mode, and the installation stability of the metal terminal is improved. And moreover, the disassembly does not depend on auxiliary tools, and the operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of wire harness technology, and in particular to a snap-fit ​​wire harness structure. Background Technology

[0002] A wire harness is a collection of multiple data cables, characterized by its integration of multiple data transmission channels. It is frequently used between control modules and various functional modules in electronic devices, such as the control bus in automobiles and the industrial control bus in machinery. With the increasing modularity and diversification of electronic devices, different manufacturers have varying requirements for wire harnesses, making it difficult to establish a unified production standard. Therefore, most wire harnesses are custom-made for specific manufacturers. This demand makes fully automated mechanized operations difficult to achieve in current wire harness manufacturing; manual labor remains the mainstay of the industry.

[0003] In wire harness manufacturing, after the metal terminals are crimped with the wires, they need to be inserted into connectors for fixation. Traditionally, workers insert the metal terminals into the connector's terminal slots from back to front, using the barbed spring at the front of the terminal to engage with the stepped portion inside the connector's terminal slot, thus preventing the metal terminals from being pulled out of the connector when the wire is pulled. When it's necessary to remove the metal terminals, an auxiliary tool with a pointed tip is inserted from the front of the terminal slot, forcing the spring to retract and avoid the stepped portion, allowing the metal terminal to be pulled out. The drawbacks of this traditional design are that workers are prone to inserting the terminals into the wrong slots during assembly, and visual inspection is difficult. Furthermore, the design relying on springs for anti-retraction results in poor installation stability. Moreover, the reliance on auxiliary tools for disassembly makes the operation inconvenient. Utility Model Content

[0004] Based on this, this utility model provides a snap-fit ​​wire harness structure. Utilizing a detachable structure formed by the outer shell, inner frame, and locking mechanism, it achieves the installation and positioning of metal terminals. Before the metal terminals enter the shell, their installation positions are identified by digital markings, reducing the risk of workers inserting terminals into the wrong slots during assembly and facilitating visual inspection. Furthermore, it abandons the traditional spring-loaded structure, employing a combination of limiting and snap-fit ​​methods to position the metal terminals, improving installation stability. Moreover, disassembly requires no auxiliary tools, simplifying the operation.

[0005] A snap-fit ​​wire harness structure, comprising:

[0006] The housing has multiple terminal channels at its front end and a sliding groove at its rear end that connects to the terminal channels. The top of the housing has a slot orthogonal to the sliding groove, and the bottom of the housing has a first positioning hole located directly below the slot.

[0007] The inner frame connects to the outer shell; the inner frame is provided with multiple spaced terminal slots; each terminal slot has limit blocks on both sides of its front end, and a number mark at its rear end; the inner frame is also provided with a second positioning hole located directly above the first positioning hole.

[0008] A latch connecting the outer casing; the latch includes: a crossbar connecting the slot and a positioning rod located on the crossbar; the positioning rod first passes through the second positioning hole and then through the first positioning hole;

[0009] Metal terminals connecting to the inner frame; the front end of the metal terminal is inserted into the terminal channel, and the rear end of the metal terminal has a horizontally outwardly extending side wing; the side wing is clamped between the rear end of the terminal channel and the front end of the limiting block; and

[0010] Wires that connect to metal terminals.

[0011] In the aforementioned snap-fit ​​wire harness structure, during assembly, the metal terminals are first crimped to the wires. Next, the metal terminals are placed into the terminal slots of the inner frame, with the side wings of the metal terminals positioned in front of the limiting blocks of the inner frame. Then, all metal terminals are placed behind the inner frame according to the numerical markings, and the inner frame is inserted into the slots of the outer shell until the side wings of the metal terminals abut against the rear end of the terminal slots. At this point, the first and second positioning holes are aligned. Finally, the latch is inserted into the outer shell, causing the latch's crossbar to engage with the slots of the outer shell, while the latch's positioning rod passes through the second and first positioning holes, thereby locking the relative positions of the outer shell, inner frame, and metal terminals. This design utilizes a detachable structure formed by the outer shell, inner frame, and latch to achieve the installation and positioning of the metal terminals. Before entering the outer shell, the installation position of each metal terminal is identified by numerical markings, reducing the risk of workers inserting the wrong terminal into the slots during assembly and facilitating visual inspection. Meanwhile, the traditional spring-loaded structure is abandoned, and a combination of limiting and snap-fit ​​methods is used to position the metal terminals, improving the installation stability of the metal terminals. Furthermore, disassembly does not require auxiliary tools, making the operation simple.

[0012] In one embodiment, the inner side of the slot is provided with a first stepped portion; the two sides of the crossbar are provided with second stepped portions that engage with the first stepped portion. The first and second stepped portions can improve the stability of the engagement between the crossbar and the slot.

[0013] In one embodiment, the inner frame is provided with multiple partitions; adjacent terminal slots are separated by partitions. The partitions can reduce the risk of contact between adjacent metal terminals.

[0014] In one embodiment, the outer shell has a guide groove; the guide groove is slidably connected to the partition. Utilizing the slidable connection between the guide groove and the partition can improve the stability and precision of the connection between the inner frame and the outer shell.

[0015] In one embodiment, the partition has a clearance groove for the connecting crossbar. The clearance groove not only avoids the crossbar but also allows the crossbar to be embedded in the partition, forming another locking point outside the limiting block and the second positioning hole.

[0016] In one embodiment, each limiting block has a protrusion at its front end; a pair of side wings are provided on both sides of the rear end of the metal terminal; the protrusion is sandwiched between the pair of side wings. By utilizing the cooperation between the protrusion and the side wings, a stable connection point can be formed when the metal terminal is connected to the inner frame, preventing the metal terminal from becoming loose during the insertion of the inner frame into the outer shell.

[0017] In one embodiment, the rear end of the metal terminal is provided with a first riveting ring and a second riveting ring for riveting a wire; the first riveting ring is sleeved on the conductor of the wire; the second riveting ring is sleeved on the outer sheath of the wire, and the width of the second riveting ring is greater than the width of the first riveting ring. This double riveting ring configuration can improve the stability of the connection between the metal terminal and the wire.

[0018] In one embodiment, the positioning rod is clamped between the rear end of the limiting block and the front end of the second riveting ring. The limiting block and the positioning rod can be clamped between the side wing and the second riveting ring to improve the installation stability of the metal terminal. Attached Figure Description

[0019] Figure 1 This is a perspective view of the snap-fit ​​wire harness structure according to Embodiment 1 of this utility model;

[0020] Figure 2 for Figure 1 A three-dimensional view of the snap-fit ​​wire harness structure from another perspective;

[0021] Figure 3 for Figure 1 An exploded view of the snap-fit ​​wire harness structure shown;

[0022] Figure 4 for Figure 3 A perspective view of the housing in the snap-fit ​​wire harness structure shown;

[0023] Figure 5 for Figure 4 A three-dimensional view of the outer casing from another perspective;

[0024] Figure 6 for Figure 3 A three-dimensional view of the inner skeleton in the snap-fit ​​wire harness structure shown;

[0025] Figure 7 for Figure 6 A three-dimensional view of the internal skeleton from another perspective;

[0026] Figure 8 for Figure 3 A perspective view of the latch in the snap-fit ​​wire harness structure shown;

[0027] Figure 9 for Figure 3 A perspective view of the metal terminals in the snap-fit ​​wire harness structure shown;

[0028] Figure 10 for Figure 1 An axial sectional view of the snap-fit ​​wire harness structure shown.

[0029] Figure 11 for Figure 1 The assembly process of the snap-fit ​​wire harness structure shown is illustrated. Figure 1 ;

[0030] Figure 12 for Figure 11 The assembly process of the snap-fit ​​wire harness structure shown is illustrated. Figure 2 ;

[0031] Figure 13 for Figure 12 The assembly process of the snap-fit ​​wire harness structure shown is illustrated. Figure 3 ;

[0032] Figure 14 for Figure 13 The assembly process of the snap-fit ​​wire harness structure shown is illustrated. Figure 4 ;

[0033] Figure 15 for Figure 13 The assembly process of the snap-fit ​​wire harness structure shown is illustrated. Figure 5 ;

[0034] Figure 16 This is a perspective view of the snap-fit ​​wire harness structure according to Embodiment 2 of this utility model;

[0035] Figure 17 for Figure 16 A magnified view of part A of the snap-fit ​​wire harness structure shown.

[0036] The meanings of the labels in the attached diagram are as follows:

[0037] 100-Snap-on Wire Harness Structure;

[0038] 10-Outer shell, 11-Terminal channel, 12-Slide groove, 13-Card slot, 131-First step, 14-First positioning hole, 15-Guide groove;

[0039] 20-Inner frame, 21-Terminal slot, 211-Digital identifier, 22-Limiting block, 221-Protrusion, 23-Second positioning hole, 24-Partition plate, 241-Allowing slot;

[0040] 30-Lock, 31-Horizontal bar, 311-Second step, 32-Positioning rod;

[0041] 40 - Metal terminal, 41 - Side wing, 42 - First rivet ring, 43 - Second rivet ring;

[0042] 50 - Wire. Detailed Implementation

[0043] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0044] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0049] Example 1

[0050] like Figures 1 to 15 As shown, it is a snap-fit ​​wire harness structure 100 of one embodiment of the present utility model.

[0051] like Figures 1 to 3 As shown, the snap-fit ​​wire harness structure 100 includes: a housing 10, an inner frame 20 connected to the housing 10, a latch 30 connected to the housing 10, metal terminals 40 connected to the inner frame 20, and wires 50 connected to the metal terminals 40. The housing 10, inner frame 20, and latch 30 constitute a connector for mounting and locking the metal terminals 40. The metal terminals 40 and wires 50 constitute a channel for electrical signal transmission.

[0052] The following text, combined with Figures 1 to 15 The above-mentioned snap-fit ​​wire harness structure 100 will be further explained.

[0053] like Figure 4and Figure 5 As shown, the front end of the housing 10 is provided with multiple terminal channels 11, and the rear end of the housing 10 is provided with a groove 12 communicating with the terminal channels 11. For example, in this embodiment, the front end of the housing 10 is provided with six terminal channels 11. The top of the housing 10 is provided with a slot 13 orthogonal to the groove 12, and the bottom of the housing 10 is provided with a first positioning hole 14 located directly below the slot 13.

[0054] like Figure 6 and Figure 7 As shown, the inner frame 20 is provided with a plurality of spaced-apart terminal slots 21. For example, in this embodiment, the inner frame 20 is provided with six terminal slots 21. Each terminal slot 21 has a limiting block 22 on both sides of its front end, and a number identifier 211, such as the numbers 1 to 6 in this embodiment, is provided at its rear end. The inner frame 20 is also provided with a second positioning hole 23 located directly above the first positioning hole 14. During assembly, the inner frame 20 is inserted into the slide groove 12 from the rear end of the outer shell 10.

[0055] In addition, combined Figure 4 and Figure 1 As shown, the outer shell 10 has a guide groove 15. The guide groove 15 is slidably connected to the partition 24. By using the guide groove 15 to slide with the partition 24, the connection stability and accuracy between the inner frame 20 and the outer shell 10 can be improved.

[0056] like Figure 8 As shown, the latch 30 includes: a crossbar 31 connecting the slot 13 and a positioning rod 32 located on the crossbar 31. Combined with... Figure 10 As shown, the positioning rod 32 first passes through the second positioning hole 23 and then enters the first positioning hole 14.

[0057] like Figure 11 As shown, a metal terminal 40 is placed in a terminal slot 21. Figure 10 As shown, the front ends of the metal terminals 40 are inserted into the terminal channels 11 one by one, and the rear ends of the metal terminals 40 are provided with horizontally outward extending side wings 41. Figure 10 As shown, the side wing 41 is sandwiched between the rear end of the terminal channel 11 and the front end of the limiting block 22.

[0058] Furthermore, such as Figure 12 As shown, in this embodiment, each limiting block 22 has a protrusion 221 at its front end. A pair of side wings 41 are provided on both sides of the rear end of the metal terminal 40. The protrusion 221 is sandwiched between the pair of side wings 41. The cooperation between the protrusion 221 and the side wings 41 allows a stable connection point to be formed when the metal terminal 40 mates with the inner frame 20, preventing the metal terminal 40 from becoming loose during the insertion of the inner frame 20 into the outer shell 10 (for initial positioning).

[0059] like Figure 11 As shown, the front end of the wire 50 is riveted to the rear end of the metal terminal 40. For example, in this embodiment, the rear end of the metal terminal 40 is provided with a first riveting ring 42 and a second riveting ring 43 for riveting the wire 50. The first riveting ring 42 is sleeved on the conductor of the wire 50. The second riveting ring 43 is sleeved on the outer sheath of the wire 50, and the width of the second riveting ring 43 is greater than the width of the first riveting ring 42. The double riveting ring configuration can improve the connection stability between the metal terminal 40 and the wire 50.

[0060] Furthermore, combined Figure 6 , Figure 9 , Figure 10 ,as well as Figure 12 As shown, in this embodiment, the positioning rod 32 is clamped between the rear end of the limiting block 22 and the front end of the second riveting ring 43. The limiting block 22 and the positioning rod 32 can be clamped between the side wing 41 and the second riveting ring 43 to improve the installation stability of the metal terminal 40.

[0061] Furthermore, in this embodiment, the inner frame 20 is provided with multiple partitions 24; for example, in this embodiment, the inner frame 20 is provided with four partitions 24. Adjacent terminal slots 21 are separated by partitions 24. The partitions 24 can reduce the risk of contact between adjacent metal terminals 40.

[0062] Furthermore, such as Figure 6 As shown, in this embodiment, the partition 24 is provided with a clearance groove 241 for engaging the crossbar 31. The clearance groove 241 not only avoids the crossbar 31, but also allows the crossbar 31 to be embedded in the partition 24, forming another locking point outside the limiting block 22 and the second positioning hole 23.

[0063] Brief description of working principle:

[0064] During assembly, such as Figure 11 As shown, the metal terminal 40 is first crimped to the wire 50. Next, the metal terminal 40 is placed into the terminal slot 21 of the inner frame 20, and the side wing 41 of the metal terminal 40 is positioned in front of the limiting block 22 of the inner frame 20.

[0065] Then, as Figure 12 and Figure 13 As shown, after placing all the metal terminals 40 in the inner frame 20 according to the indication of the number 211, insert the inner frame 20 into the slot 13 of the outer shell 10 until the side wings 41 of the metal terminals 40 abut against the rear end of the terminal slot 21. At this time, the first positioning hole 14 and the second positioning hole 23 are on the same straight line.

[0066] Finally, as Figure 14 and Figure 15As shown, the latch 30 is inserted into the housing 10, so that the crossbar 31 of the latch 30 engages with the slot 13 of the housing 10, and the positioning rod 32 of the latch 30 passes through the second positioning hole 23 and the first positioning hole 14, thereby locking the relative positions of the housing 10, the inner frame 20 and the metal terminal 40.

[0067] The aforementioned snap-fit ​​wire harness structure 100 utilizes a detachable structure formed by the outer shell 10, inner frame 20, and locking buckle 30 to achieve the installation and positioning of the metal terminals 40. This allows the installation position of each metal terminal 40 to be identified by a digital identifier 211 before entering the outer shell 10, reducing the risk of operators inserting the wrong terminal into the terminal slot 21 during assembly and facilitating visual inspection. Furthermore, it abandons the traditional spring-loaded structure, employing a combination of limiting and snap-fit ​​methods to position the metal terminals 40, improving the installation stability of the metal terminals 40. Moreover, disassembly requires no auxiliary tools, simplifying the operation.

[0068] Example 2

[0069] like Figure 16 and Figure 17 As shown, this is another embodiment of the snap-fit ​​wire harness structure 100 of this utility model.

[0070] The difference between this embodiment and Embodiment 1 is that: Figure 16 and Figure 17 As shown, in this embodiment, the inner side of the slot 13 is provided with a first step portion 131. The two sides of the crossbar 31 are provided with second step portions 311 that engage with the first step portion 131. The first step portion 131 and the second step portion 311 can improve the stability of the engagement between the crossbar 31 and the slot 13.

[0071] The other structures in this embodiment are the same as in Embodiment 1, and it can also achieve the beneficial effects of Embodiment 1.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The above embodiments only illustrate preferred implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A snap-type wiring harness structure characterized by, The utility model relates to a kind of metal terminal and its connecting structure, including: Housing; The front end of the housing is provided with a plurality of terminal channels, and the rear end of the housing is provided with a chute communicating with the terminal channels;The top of the housing is provided with a clamping slot orthogonal to the chute, and the bottom of the housing is provided with a first positioning hole located directly below the clamping slot; The inner frame connected to the housing is provided with a plurality of spaced terminal slots;The front end of each terminal slot is provided with a limiting block on both sides, and the rear end of each terminal slot is provided with a digital identification;The inner frame is also provided with a second positioning hole located directly above the first positioning hole; The lock connected to the housing;The lock includes a crossbar connected to the clamping slot and a positioning rod located on the crossbar;The positioning rod first passes through the second positioning hole and then penetrates into the first positioning hole; The metal terminal connected to the inner frame;The front end of the metal terminal is inserted into the terminal channel, and the rear end of the metal terminal is provided with a horizontally outward extending wing;The wing is clamped between the rear end of the terminal channel and the front end of the limiting block;And The wire connected to the metal terminal.

2. The snap-type wiring harness structure according to claim 1, characterized by The inner side of the clamping slot is provided with a first step portion;The two sides of the crossbar are provided with a second step portion for clamping the first step portion.

3. The snap-type wiring harness structure according to claim 1, characterized by The inner frame is provided with a plurality of partitions;Two adjacent terminal slots are separated by the partition.

4. The snap-type wiring harness structure according to claim 3, characterized by The housing is provided with a guide slot;The guide slot is in sliding connection with the partition.

5. The snap-type wiring harness structure according to claim 3, characterized by The partition is provided with an avoidance slot for abutting the crossbar.

6. The snap-type wiring harness structure according to claim 1, characterized by The front end of each limiting block is provided with a protruding portion;The rear end of the metal terminal is provided with a pair of wings on both sides respectively;The protruding portion is clamped between the pair of wings.

7. The snap-type wiring harness structure according to claim 1, characterized by The rear end of the metal terminal is provided with a first riveting ring and a second riveting ring for riveting the wire;The first riveting ring is sleeved on the conductor of the wire;The second riveting ring is sleeved on the outer sheath of the wire, and the width of the second riveting ring is greater than the width of the first riveting ring.

8. The snap-type wiring harness structure according to claim 7, characterized by The positioning rod is clamped between the rear end of the limiting block and the front end of the second riveting ring.

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