Three-pin solid plug inner frame

Abstract

The utility model discloses a three-pin solid plug inner frame, which comprises a base, a connecting piece and three pins, the base is provided with three mounting holes in one-to-one correspondence with the three pins, the upper ends of the pins penetrate through the corresponding mounting holes and are provided with wiring holes, the upper end surface of the base is provided with a slot, and the upper end surface of the base is provided with a connecting piece. The front side of the inserting groove penetrates through the front side face of the base, the connecting piece comprises an inserting block and a supporting plate fixedly arranged on the upper end face of the inserting block, the inserting block is inserted into the inserting groove, and the front side face of the inserting block is provided with a first inclined guide face inclining downwards from back to front. The supporting plate extends to the upper end face of the base and is provided with a plurality of through holes. The method has the advantage that the assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plugs, and particularly relates to an inner frame of a three-pin solid plug. Background Art

[0002] The inner frame of a three-pin solid plug refers to the supporting structure inside a three-pin plug, usually including the pins of the plug and connecting elements. The existing inner frame of a three-pin solid plug, such as a three-pin solid plug inner frame disclosed in the application number CN202322481361.X, includes a base, three pins fixed on the base, the three pins are parallel and penetrate through the base vertically, and a wiring hole is opened at the upper end of each pin; one side of the base is a plane, and a card slot communicating with the upper end face is opened on the plane, a connecting piece is installed in the card slot in a clamping manner, the upper end of the connecting piece penetrates out of the base upward, and at least one through hole is arranged on the connecting piece. This technical solution uses the external pressure method to squeeze the upper end of the pin inserted with the input wire to deform, so that the input wire is connected to the pin, without the need for other auxiliary connecting materials for connection, simplifies the connection process, improves the connection efficiency, reduces the cost, reduces environmental pollution and waste of resources, and at the same time reduces potential safety hazards.

[0003] Furthermore, the connecting piece is clamped into the card slot from the side of the base, and the upper end of the connecting piece penetrates out of the base. Although it can prevent the connecting piece from slipping out of the upper opening of the card slot, the connecting piece may move laterally. If a part of the connecting piece slips out of the side of the card slot, it will affect the later assembly of the base and the external housing, so there is still room for improvement. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an inner frame of a three-pin solid plug, which helps to improve the assembly efficiency.

[0005] The technical solution adopted by the utility model to solve the above technical problem is: an inner frame of a three-pin solid plug, including a base, a connecting piece and three pins, three mounting holes corresponding to the three pins are arranged on the base, the upper end of the pin penetrates through the corresponding mounting hole and is provided with a wiring hole, a slot is arranged on the upper end face of the base, the front side of the slot penetrates through the front side face of the base, the connecting piece includes a plug block and a support plate fixedly arranged on the upper end face of the plug block, the plug block is inserted into the slot, a first inclined guide surface inclined from back to front and downward is arranged on the front side face of the plug block, and the support plate extends to the upper end face of the base and is provided with a plurality of through holes.

[0006] Preferably, a plurality of hemispherical grooves are provided on the upper end surface of the base, an elastic extension plate is fixedly provided on the rear side surface of the support plate, a plurality of hemispherical bumps corresponding to the plurality of hemispherical grooves one by one are fixedly provided on the lower end surface of the extension plate, the lower end surface of the support plate is in contact with the upper end surface of the base, the hemispherical bumps extend into the corresponding hemispherical grooves, and the through hole is located above the extension plate.

[0007] Preferably, the plurality of hemispherical grooves are equidistantly distributed in the left-right direction.

[0008] Preferably, a second inclined guide surface that slopes backward from bottom to top is provided at the upper end of the rear side surface of the slot.

[0009] Preferably, at least one positioning groove is provided on the front side surface of the base, the positioning groove communicates with the slot, at least one positioning block is provided on the side surface of the plug, and the positioning block is in plug-in fit with the positioning groove.

[0010] Preferably, there are two positioning grooves, and the two positioning grooves are symmetrically distributed on the left and right sides of the slot. There are two positioning blocks, and the two positioning blocks correspond to the two positioning grooves one by one.

[0011] Preferably, an annular groove is provided on the side surface of the base, the annular groove is located below the slot, and a sealing ring is provided in the annular groove.

[0012] Preferably, the width of the slot opening is smaller than the width of the slot bottom.

[0013] Compared with the prior art, the advantages of the present utility model are as follows:

[0014] 1. By providing the first inclined guide surface on the plug, even if a part of the plug comes out from the front side of the slot, when the base is assembled with the external housing later, the external housing can contact the first inclined guide surface and push the protruding plug into the slot, which helps to improve the assembly efficiency;

[0015] 2. By providing the extension plate and the hemispherical grooves, when the plug is inserted into the slot, the hemispherical bumps on the extension plate can extend into the hemispherical grooves, playing a certain locking role to prevent the plug from moving forward and coming out of the slot, and the stability is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is an exploded structural diagram of the present utility model;

[0018] Figure 3This is a schematic structural view of the connecting piece in the present utility model.

[0019] In the figure: 1, base; 11, mounting hole; 12, slot; 121, second inclined guide surface; 13, hemispherical groove; 14, positioning groove; 15, annular groove; 2, connecting piece; 21, insertion block; 211, first inclined guide surface; 22, support plate; 221, through hole; 23, extension plate; 231, hemispherical convex block; 24, positioning block; 3, pin; 31, wiring hole; 4, sealing ring. Detailed implementation manners

[0020] The following further describes the present utility model in detail with reference to the embodiments in the accompanying drawings.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] Embodiment 1: As Figures 1 to 3 shown, a three-pin solid plug inner frame includes a base 1, a connecting piece 2 and three pins 3. Three mounting holes 11 corresponding to the three pins 3 are provided on the base 1. The upper ends of the pins 3 pass through the corresponding mounting holes 11 and are provided with wiring holes 31. A slot 12 is provided on the upper end surface of the base 1. The front side of the slot 12 penetrates the front side surface of the base 1. The connecting piece 2 includes an insertion block 21 and a support plate 22 fixedly arranged on the upper end surface of the insertion block 21. The insertion block 21 is inserted into the slot 12. The front side surface of the insertion block 21 is provided with a first inclined guide surface 211 that slopes downward from back to front. The support plate 22 extends to the upper end surface of the base 1 and is provided with a plurality of through holes 221.

[0023] In this embodiment, the width of the slot opening of the slot 12 is smaller than the width of the slot bottom of the slot 12.

[0024] Embodiment 2: As Figure 2 and Figure 3As shown, the rest of the parts are the same as those in the first embodiment, except that a plurality of hemispherical grooves 13 are provided on the upper end surface of the base 1, an elastic extension plate 23 is fixedly provided on the rear side surface of the support plate 22, a plurality of hemispherical protrusions 231 corresponding to the plurality of hemispherical grooves 13 are fixedly provided on the lower end surface of the extension plate 23, the lower end surface of the support plate 22 is in contact with the upper end surface of the base 1, the hemispherical protrusions 231 extend into the corresponding hemispherical grooves 13, and the through hole 221 is located above the extension plate 23.

[0025] In this embodiment, the plurality of hemispherical grooves 13 are distributed at equal intervals along the left-right direction.

[0026] In the process of inserting the plug 21 into the slot 12, the hemispherical protrusion 231 on the extension plate 23 first contacts the upper end surface of the base 1, the extension plate 23 bends upward and generates a rebound force, and then the hemispherical protrusion 231 extends into the hemispherical groove 13. At this time, the extension plate 23 recovers and contacts the upper end surface of the base 1. The hemispherical protrusion 231 cooperates with the hemispherical groove 13 to play a certain locking role, preventing the plug 21 from moving forward and falling out of the slot 12, and the stability is better.

[0027] Furthermore, a second inclined guide surface 121 is provided at the upper end of the rear side surface of the slot 12, which is inclined from bottom to top and backward, so that the hemispherical protrusion 231 can move relatively smoothly to the upper end surface of the base 1, avoiding collision between the hemispherical protrusion 231 and the rear side surface of the slot 12, thereby improving safety.

[0028] Embodiment 3: Figures 1 to 3 As shown, the rest of the parts are the same as those of the first embodiment, except that at least one positioning groove 14 is provided on the front side of the base 1, the positioning groove 14 is connected to the slot 12, and at least one positioning block 24 is provided on the side of the insert block 21, and the positioning block 24 is plugged and matched with the positioning groove 14. Preferably, two positioning grooves 14 are provided, and the two positioning grooves 14 are symmetrically distributed on the left and right sides of the slot 12, and two positioning blocks 24 are provided, and the two positioning blocks 24 correspond to the two positioning grooves 14 one by one. The positioning blocks 24 play a certain foolproof role, preventing the staff from installing the connector 2 upside down during assembly, and the reliability is good.

[0029] In this embodiment, an annular groove 15 is provided on the side surface of the base 1 . The annular groove 15 is located below the insertion slot 12 . A sealing ring 4 is provided in the annular groove 15 .

[0030] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A three - prong solid plug inner frame, comprising a base (1), a connecting member (2) and three pins (3). Three mounting holes (11) corresponding to the three pins (3) one by one are provided on the base (1). The upper ends of the pins (3) pass through the corresponding mounting holes (11) and are provided with wiring holes (31), and it is characterized in that The upper end surface of the base (1) is provided with a slot (12), the front side of the slot (12) penetrates through the front side surface of the base (1), the connecting member (2) includes a plug block (21) and a support plate (22) fixedly arranged on the upper end surface of the plug block (21), the plug block (21) is inserted into the slot (12), the front side surface of the plug block (21) is provided with a first inclined guide surface (211) that slopes downward from back to front, and the support plate (22) extends to the upper end surface of the base (1) and is provided with a plurality of through holes (221).

2. The inner frame of a three-pin solid plug according to claim 1, characterized in that The upper end surface of the base (1) is provided with a plurality of hemispherical grooves (13), the rear side surface of the support plate (22) is fixedly provided with an elastic extension plate (23), the lower end surface of the extension plate (23) is fixedly provided with a plurality of hemispherical bumps (231) corresponding to the plurality of hemispherical grooves (13) one by one, the lower end surface of the support plate (22) is in contact with the upper end surface of the base (1), the hemispherical bumps (231) extend into the corresponding hemispherical grooves (13), and the through holes (221) are located above the extension plate (23).

3. The inner frame of a three-pin solid plug according to claim 2, characterized in that The plurality of hemispherical grooves (13) are equidistantly distributed in the left-right direction.

4. The inner frame of a three-pin solid plug according to claim 2, characterized in that The upper end of the rear side surface of the slot (12) is provided with a second inclined guide surface (121) that slopes backward from bottom to top.

5. The inner frame of a three-pin solid plug according to claim 1, characterized in that The front side surface of the base (1) is provided with at least one positioning groove (14), the positioning groove (14) communicates with the slot (12), the side surface of the plug block (21) is provided with at least one positioning block (24), and the positioning block (24) is in plug-in fit with the positioning groove (14).

6. The inner frame of a three-pin solid plug according to claim 5, characterized in that There are two positioning grooves (14), the two positioning grooves (14) are symmetrically distributed on the left and right sides of the slot (12), there are two positioning blocks (24), and the two positioning blocks (24) correspond to the two positioning grooves (14) one by one.

7. A three-pin solid plug inner frame according to claim 1, characterized in that The side surface of the base (1) is provided with an annular groove (15), the annular groove (15) is located below the slot (12), and a sealing ring (4) is arranged in the annular groove (15).

8. The inner frame of a three-pin solid plug according to claim 1, characterized in that The width of the slot opening of the slot (12) is smaller than the width of the slot bottom of the slot (12).

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