Fixing structure of SR terminal

Abstract

The utility model relates to the technical field of wire terminals, in particular to a fixing structure of an SR terminal, which comprises a surface shell and a bottom shell, one end of the surface shell is buckled with one end of the bottom shell, the other end of the surface shell extends to form an extension part, and an external wire penetrates through a channel formed by the two extension parts; wherein a circular sleeve is arranged between the two extension parts in a sleeving manner, and locking structures are arranged between the circular sleeve and the extension parts; according to the utility model, the face shell is connected with one end of the bottom shell in a buckling manner, and the other end of the face shell is used for fixing the two extension parts in an annular sleeving manner through the circular sleeve, so that the connection and fixation of the two ends are realized, and the assembly convenience is improved. A traditional bottom face shell screw locking structure is replaced with a circular lantern ring sleeve locking method, the assembling process is simplified, labor and cost are saved, meanwhile, it is guaranteed that related tests of external connection wires are passed, and the product is free of screw holes in appearance and more attractive.

Description

Technical Field

[0001] The utility model relates to the technical field of wire terminals, in particular to a fixing structure of an SR terminal. Background Art

[0002] The SR tail card (English name: string relief, also referred to as SR) of the wire terminal in the industry is used at the connection between the end of the wire and the wiring device to facilitate the smooth connection between the wire and the wiring device, ensure the stability and reliability of the connection, and at the same time eliminate the stress of the wire and prevent the core wire from breaking at the wire connection.

[0003] As shown in the accompanying drawings Figure 1 As shown, for conventional products with external wiring, the internal wire ends or the bottom shell must be screwed to achieve the relevant tension and torque tests of the wire ends. In the figure, 1 is the shell; 2 is the bottom shell; 3 is the external wiring; 4 is the bolt.

[0004] The bolt fixing method is complicated in process and low in assembly efficiency. In addition, in order to adapt to the installation of the bolts, through holes need to be opened on the bottom shell, which also affects the appearance consistency of the entire product. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art such as low assembly efficiency and unsightly appearance, and to propose a fixing structure for an SR terminal.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A fixing structure for an SR terminal is designed, comprising a top shell and a bottom shell. The top shell is buckled with one end of the bottom shell, and an extension portion is extended from the other end. An external wire is passed through a channel formed by the two extension portions.

[0008] Wherein, a circular sleeve is sleeved between the two extensions, and a locking structure is provided between the circular sleeve and the extensions;

[0009] A limiting structure is also provided between the external line and the two extension parts.

[0010] Furthermore, the limiting structure includes an outward expansion portion and a stop portion formed on the outside of the external line, and a limiting groove between the outward expansion portion and the stop portion;

[0011] Snap rings are formed on opposite surfaces of the two extension parts, and the two snap rings are snapped into the limiting grooves.

[0012] Furthermore, the two extensions form a circular channel, any cross section of the outward expansion portion along the axial direction is circular and is adapted to the circular channel, and a sealing convex ring is further provided on the outer side of the outward expansion portion.

[0013] Furthermore, the side edges of the stop portion facing the surface shell and the bottom shell are provided with guiding bevels.

[0014] Furthermore, the locking structure includes a convex portion formed on the inner side of the circular sleeve, and a concave portion is formed on the outer side of the extension portion, and the convex portion is engaged in the concave portion.

[0015] Furthermore, the locking structure also includes a rectangular hole opened on the circular sleeve, a groove is provided on the outer side of the extension portion, an elastic claw is fixed in the groove, and the elastic claw is clamped in the rectangular hole.

[0016] Furthermore, arc-shaped portions are provided on the opposite surfaces of the circular sleeve and the extension portion, and guiding inclined surfaces are provided on both sides of the protrusion.

[0017] Furthermore, the outer peripheral surface diameter of the circular sleeve gradually decreases along the extension direction of the outer line away from the extension portion.

[0018] This utility model proposes a fixing structure for SR terminals. The beneficial effects are: By fastening the top and bottom shells together at one end and securing the two extensions with a circular sleeve at the other end, the two ends are connected and fixed, improving assembly convenience. The use of a circular sleeve-and-sleeve locking method replaces the traditional screw-on locking mechanism for the bottom shell, simplifying the assembly process, saving labor and costs, while ensuring that the terminal passes relevant external wiring tests. Furthermore, the product has no screw holes, making it more aesthetically pleasing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly structure of the prior art;

[0020] Figure 2 It is a structural diagram of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the limiting structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the elastic claw structure of the utility model;

[0023] Figure 5 It is a cross-sectional view of the circular sleeve of the present utility model.

[0024] In the figure: 1. Surface shell; 2. Bottom shell; 3. Extension part; 4. External wire; 5. Circular sleeve; 6. Locking structure; 61. Protrusion; 62. Concave position; 63. Rectangular hole; 64. Elastic claw; 7. Limiting structure; 71. Outward expansion part; 72. Stop part; 73. Limiting groove; 74. Snap ring; 75. Sealing convex ring; 76. Guide bevel. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 2-5 This is an embodiment of the present invention, which discloses a fixing structure for an SR terminal. Specifically, in this embodiment, a remote control structure is taken as an example. The remote control is an external wiring type control structure. Of course, the fixing structure can also be applied to other surface shell structures that require external wiring, such as sockets. Specifically, the fixing structure includes a surface shell 1 and a bottom shell 2. The surface shell 1 is buckled with one end of the bottom shell 2. That is, in this embodiment, one end of the surface shell 1 and the bottom shell 2 are both provided with claws, and the two claws are buckled in opposite directions. An extension part 3 extends from the other end, and an external wire 4 is passed through the channel formed by the two extension parts 3.

[0027] A circular sleeve 5 is provided between the two extensions 3, and a locking structure 6 is provided between the circular sleeve 5 and the extension 3;

[0028] A limiting structure 7 is further provided between the external line 4 and the two extension portions 3 .

[0029] In some embodiments, the limiting structure 7 of the present invention includes an outward expansion portion 71 and a stop portion 72 formed on the outside of the external line 4. The stop portion 72 is located in the channel formed by the two extension portions 3. A limiting groove 73 is formed between the outward expansion portion 71 and the stop portion 72.

[0030] A snap ring 74 is formed on the opposite surfaces of the two extension parts 3, and the two snap rings 74 are snapped into the limiting groove 73. In a further embodiment, the limiting ring groove 73 is a ring groove. Specifically, in this embodiment, the limiting groove 73 is designed to be snapped and fixed with the snap ring 74, thereby preventing the external wire 4 from being pulled outward and fixing the position of the external wire 4.

[0031] On the basis of the above embodiments, the two extension portions 3 in this embodiment form a circular channel, and any cross-section of the outward expansion portion 71 along the axial direction is circular and adapted to the circular channel. A sealing convex ring 75 is further provided on the outer side of the outward expansion portion 71. Preferably, the sealing convex ring 75 and the outward expansion portion 71 in this embodiment are an integrally formed structure. The design of the sealing convex ring 75 can greatly improve the dustproof sealing between the outward expansion portion 71 and the extension portion 3. When the face shell 1 and the bottom shell 2 are merged, the sealing convex ring 75 is squeezed to achieve a sealing effect.

[0032] In addition, in order to achieve convenient insertion of the stopper 72 in this embodiment, a guiding bevel 76 is provided on the side of the stopper 72 facing the surface shell 1 and the bottom shell 2 in this embodiment.

[0033] In some embodiments, the locking structure 6 in the present invention includes a convex position 61 formed on the inner side of the circular sleeve 5, and a concave position 62 is opened on the outer side of the extension part 3, and the convex position 61 is snapped into the concave position 62. Preferably, the convex position 61 and the concave position 62 described in this embodiment are both annular structures, wherein the circular sleeve 5 can be set as a silicone sleeve to meet certain deformation requirements during the assembly process, that is, in this embodiment, the design of the circular sleeve 5 is adopted, which is used to be sleeved on the outer sides of the two extension parts 3, and the connection and fixation between the two extension parts 3 are completed by the cooperation of the convex position 61 and the concave position 62. Since the other end of the face shell 1 and the bottom shell 2 adopts a snap-fit ​​connection method, the assembly of the entire shell can be completed after the circular sleeve 5 is connected.

[0034] On the basis of the above embodiment, in order to further fix the position of the circular sleeve 5 after locking, the locking structure 6 in this embodiment further includes a rectangular hole 63 provided on the circular sleeve 5, a groove is provided on the outer side of the extension portion 3, and an elastic claw 64 is fixed in the groove. Preferably, one end of the elastic claw 64 in this embodiment is fixedly connected to the inner side of the groove, and the elastic claw 64 can be retracted and deformed into the groove;

[0035] The elastic claw 64 is clamped in the rectangular hole 63. In this embodiment, the design of the elastic claw 64 is used to lock the position of the circular sleeve 5 to further improve the fixity of its installation position. Of course, the number of the elastic claws 64 described in this embodiment can be set to one or more, which is specifically selected by technical personnel in the relevant field and will not be elaborated here.

[0036] Furthermore, in order to ensure the convenience of plugging and unplugging between the various components, in this embodiment, arc-shaped portions are provided on the opposite surfaces of the circular sleeve 5 and the extension portion 3 , and guiding slopes are provided on both sides of the protrusion 61 .

[0037] It should be noted that the outer diameter of the circular sleeve 5 in this embodiment gradually decreases along the extension direction of the external line 4 away from the extension part 3. Preferably, the outer side of the circular sleeve 5 in this embodiment is provided with a slope of 4 degrees, and the overall shape is large at the head and small at the tail and has a trumpet-shaped structure, which can facilitate guidance during assembly.

[0038] In summary, the present invention achieves a secure connection between the two ends by fastening the top shell 1 and the bottom shell 2 at one end and securing the two extensions 3 with a circular sleeve 5 at the other end, thereby improving assembly convenience. The use of the circular sleeve 5 for locking the top shell in a circular manner replaces the traditional screw-locking structure of the bottom shell, simplifying the assembly process, saving labor and costs, while ensuring that the relevant tests for the external cable 4 are passed. Furthermore, the product has no screw holes, making it more aesthetically pleasing.

[0039] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fixing structure for an SR terminal, comprising a top shell (1) and a bottom shell (2), characterized in that: The front shell (1) and the bottom shell (2) are buckled together at one end, and an extension portion (3) is extended from the other end, and an external wire (4) is passed through the channel formed by the two extension portions (3); A circular sleeve (5) is sleeved between the two extensions (3), and a locking structure (6) is provided between the circular sleeve (5) and the extension (3); A limiting structure (7) is also provided between the external wire (4) and the two extension portions (3).

2. The SR terminal fixing structure according to claim 1, characterized in that: The limiting structure (7) comprises an outward expansion portion (71) and a stop portion (72) formed on the outside of the external line (4), and a limiting groove (73) between the outward expansion portion (71) and the stop portion (72); Snap rings (74) are formed on opposite surfaces of the two extension portions (3), and the two snap rings (74) are snap-engaged in the limiting grooves (73).

3. The SR terminal fixing structure according to claim 2, characterized in that: The two extension portions (3) form a circular channel. Any cross section of the outward expansion portion (71) along the axial direction is circular and is adapted to the circular channel. A sealing convex ring (75) is also provided on the outer side of the outward expansion portion (71).

4. The SR terminal fixing structure according to claim 2, characterized in that: A guiding bevel (76) is provided on the side of the stop portion (72) facing the surface shell (1) and the bottom shell (2).

5. The SR terminal fixing structure according to claim 1, characterized in that: The locking structure (6) comprises a convex portion (61) formed on the inner side of the circular sleeve (5), a concave portion (62) is provided on the outer side of the extension portion (3), and the convex portion (61) is engaged in the concave portion (62).

6. The SR terminal fixing structure according to claim 5, characterized in that: The locking structure (6) further comprises a rectangular hole (63) formed on the circular sleeve (5), a groove is provided on the outer side of the extension portion (3), an elastic claw (64) is fixed in the groove, and the elastic claw (64) is engaged in the rectangular hole (63).

7. The SR terminal fixing structure according to claim 5, characterized in that: Arc portions are provided on the opposing surfaces of the circular sleeve (5) and the extension portion (3), and guiding inclined surfaces are provided on both sides of the convex portion (61).

8. A fixing structure for an SR terminal according to any one of claims 1 to 7, characterized in that: The outer peripheral surface diameter of the circular sleeve (5) gradually decreases along the extension direction of the outer line (4) away from the extension portion (3).

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