CN101615740B - Improved structure of internal-frame pressure cover of powder supply plug with grounding spring piece - Google Patents
Improved structure of internal-frame pressure cover of powder supply plug with grounding spring piece Download PDFInfo
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- CN101615740B CN101615740B CN2008101275218A CN200810127521A CN101615740B CN 101615740 B CN101615740 B CN 101615740B CN 2008101275218 A CN2008101275218 A CN 2008101275218A CN 200810127521 A CN200810127521 A CN 200810127521A CN 101615740 B CN101615740 B CN 101615740B
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- pressure cover
- frame body
- elastic part
- inner frame
- grounding elastic
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Abstract
The invention provides an improved structure of an internal-frame pressure cover of a powder supply plug with a grounding spring piece, which mainly relates to the design of a pressure cover which is arranged on the back of an inner frame, in particular to a gap space which passes through the upper part of the pressure forwards to backwards. An arch edge is formed from the top to the side (an inner side, an outer side or both sides) of a frame wall of the gap space, and the arch edge is used for prevent insulating layers of rivet wires of the plug from being damaged and avoids the danger of exposed wire cores.
Description
Technical field
What the present invention relates to is a kind of inner bracket of power plug pressure cover improved structure of tool grounding elastic part, refer to especially a kind of for described this internal frame as the pressure cover that prevents plug finished product bad order.
Background technology
General daily life and the electrical equipment of industrial operation or the use of appliances, the power source of its alternating current mainly is to engage with socket through a wire and plug, and conducts current to electrical equipment or appliances.The operating type of general plug injection molding is after the line ball operation is accomplished, and terminal is inserted an internal frame body, it is inserted in the mould of plug body again, carries out one injection molding (molding).
A kind of attaching plug with grounding elastic part is arranged in the plug; This kind has the attaching plug of grounding elastic part, because more aforementioned general plug tool fail safe in the use, so extensively be used in general electrical equipment; The safety requirements that also meets some advanced country more meets the specification of Europe at state.
And aforesaid attaching plug with grounding elastic part sees also Fig. 1, cooperates shown in Figure 2; One plug as yet not before the injection molding, is provided with an internal frame (1) at its exterior contour, respectively is provided with a positive terminal (12) and negative terminal (13) on the inner frame body (11) of described internal frame (1); And be provided with a grounding elastic part (14), and wearing a ground wire hole (showing) on the described grounding elastic part (14) in the behind of Fig. 1 and Fig. 2, the plug after will being shaped in use inserts the socket of outside; And be convexly equipped with the earth terminal in line hole accordingly on the external receptacle; In the ground wire hole of the grounding elastic part (14) of insertion plug, both form joint, and can reach the safe effect of ground connection.Again; This kind grounding elastic part (14) is to be shaped through suitable bending; And make up through build-in with the end and the inner frame body (11) of described grounding elastic part (14), because described grounding elastic part (14) one sidepieces extend outward first of a hollow tube-shape and put line tube (141).Described first puts line tube (141) for the heart yearn bundle of accepting ground wire as shown in Figure 3, and described heart yearn bundle is after constriction, and outer rim is coated with the usefulness (as shown in Figure 3) of insulating barrier (142).
And described positive terminal (12) and negative terminal (13) also extend second of a hollow tube-shape to inner frame body (11) trailing flank and put line tube (121) and the 3rd and put line tube (131).In addition, and for aforesaid one injection molding (molding) operation reduces subsiding of plug outward appearance, a pressure cover (15) is established at the back of described inner frame body (11), to reduce the fraction defective of product.
And described pressure cover (15) is an arc flap; And described pressure cover (15) combines with inner frame body (11); Mainly be to overlap described inner frame body (11), and pressure cover (15) top run through one after by forward direction and lack portion space (152) with perisporium (151), as shown in Figure 3; Can allow that first to the 3rd riveting line outer rim coated insulation layer (142), (122), (132) of putting line tube (141), (121), (131) pass through; Yet see also shown in Figure 1ly, this kind background technology often forms a sharp edge (154) (being commonly called as burr, not of uniform size) at the periphery (153) of described scarce portion space (152); Simultaneously because described pressure cover (15) is by plastics ejection formation institute output; Therefore also tend to produce a little sharp keen burr, therefore first to the 3rd the riveting line outer rim coated insulation layer (142) of putting line tube (141), (121), (131), (122), (132) through the time, damage is often cut because produce with sharp edge (154) extruding of the periphery (153) of described scarce portion space (152), friction in described insulating barrier (142), (122), (132); Fig. 3 is signal with insulating barrier (132), therefore possibly cause the danger of electricity consumption.
Summary of the invention
Because the problem of background technology, the inventor thinks should have a kind of structure that can improve, and accurate this design idea designs a kind of inner bracket of power plug pressure cover improved structure of tool grounding elastic part.
The inner bracket of power plug of this kind tool grounding elastic part; Described internal frame comprises an inner frame body, respectively is provided with a positive and negative electrode terminal on the described inner frame body, and is provided with a grounding elastic part; Wear a ground wire hole on the described grounding elastic part; And described grounding elastic part is to bend shaping, and makes up through build-in with the end and the inner frame body of described grounding elastic part, and described grounding elastic part one sidepiece extends first of a hollow tube-shape to the inner frame body trailing flank and puts the line tube; Described positive and negative electrode terminal also extends second of a hollow tube-shape to the inner frame body trailing flank and puts line tube and the 3rd and put the line tube; A pressure cover is established at the back of described inner frame body, and described pressure cover overlaps described inner frame body with periphery, and pressure cover top is run through one after by forward direction and lacked the portion space; Can allow that first to the 3rd the riveting line of putting the line tube passes through; The present invention mainly forms an arc edge at frame wall top to the side in described scarce portion space, and main purpose is that preventing through described arc edge that described first to the 3rd the insulation of putting line tube riveting line from producing cuts damage, to avoid causing the danger of electricity consumption.
A base pieces is established in the bottom, scarce portion space of described pressure cover, and described base pieces is provided with the spacer of two spaces, and described two spacers extend to described scarce portion space, and described spacer periphery, and top to side forms an arc edge.
Description of drawings
Fig. 1 is the solid combination and the partial enlarged drawing of background technology;
Fig. 2 is the three-dimensional exploded view of background technology;
Fig. 3 is the sketch map of the sharp edge friction insulating barrier state of background technology;
Fig. 4 is three-dimensional combination figure of the present invention and partial enlarged drawing;
Fig. 5 is a three-dimensional exploded view of the present invention;
Fig. 6 is the sketch map of arc edge friction insulating barrier state of the present invention;
Fig. 7 is solid combination and the partial enlarged drawing of the other a kind of embodiment of the present invention;
Fig. 8 is three-dimensional combination of another embodiment of the present invention and partial enlarged drawing;
Fig. 9 is the three-dimensional decomposition and combination figure of another embodiment of the present invention;
Figure 10 is a plug finished product stereogram of the present invention.
Description of reference numerals: 1-internal frame; The 11-inner frame body; The 12-positive terminal; 121-second puts the line tube; The 122-insulating barrier; The 13-negative terminal; 131-the 3rd puts the line tube; The 132-insulating barrier; The 14-grounding elastic part; 141-first puts the line tube; The 142-insulating barrier; The 15-pressure cover; The 151-perisporium; 152-lacks the portion space; The 153-periphery; The 154-sharp edge; The 2-internal frame; The 21-inner frame body; The 22-positive terminal; 221-second puts the line tube; The 222-insulating barrier; The 23-negative terminal; 231-the 3rd puts the line tube; The 232-insulating barrier; The 24-grounding elastic part; 241-first puts the line tube; The 242-insulating barrier; The 25-pressure cover; The 251-perisporium; 252-lacks the portion space; 253-frame wall; 254-arc edge; 254A-arc edge; The 255-excrescence; The 256-base pieces; The 257-spacer; The 258-spacer; 259-arc edge; 3-plug finished product.
Embodiment
Below in conjunction with accompanying drawing, do more detailed explanation with other technical characterictic and advantage to the present invention is above-mentioned.
See also Fig. 4 and shown in Figure 5, the inner bracket of power plug pressure cover improved structure of described tool grounding elastic part of the present invention is provided with an internal frame (2); Respectively be provided with a positive terminal (22) and negative terminal (23) within the described internal frame (2) on the support body (21); And be provided with a grounding elastic part (24), and wearing a ground wire hole (showing) on the described grounding elastic part (24) in the behind of Fig. 4 and Fig. 5, the plug after will being shaped in use inserts the socket of outside; And be convexly equipped with the earth terminal in line hole accordingly on the external receptacle; In the ground wire hole of the grounding elastic part (24) of insertion plug, the two forms joint, and can reach the safe effect of ground connection.Again; This kind grounding elastic part (24) is suitably to bend shaping; And make up through build-in with the end and the inner frame body (21) of described grounding elastic part (24), because described grounding elastic part (24) one sidepieces extend outward first of a hollow tube-shape and put line tube (241).Described first puts line tube (241) for the heart yearn bundle of accepting ground wire as shown in Figure 6, and described heart yearn bundle is behind constriction, and outer rim is coated with the usefulness of insulating barrier (242).
And described positive terminal (22) and negative terminal (23) also extend second of a hollow tube-shape to inner frame body (21) trailing flank and put line tube (221) and the 3rd and put line tube (231).In addition, and for aforesaid one injection molding (molding) operation reduces subsiding of plug outward appearance, a pressure cover (25) is established at the back of described inner frame body (21), to reduce the fraction defective of product.
And described pressure cover (25) is an arc flap; And described pressure cover (25) combines with inner frame body (21); Mainly be to overlap described inner frame body (21) with perisporium (251); And pressure cover (25) top is run through one after by forward direction and is lacked portion space (252); As shown in Figure 6, can allow that first to the 3rd riveting line outer rim coated insulation layer (242), (222), (232) of putting line tube (241), (221), (231) are passed through, the present invention particularly forms an arc edge (254) at frame wall (253) top to the side of described scarce portion space (252), and (described side comprises inboard, the outside; And be that two sides have concurrently during preferable enforcement), the description of this section portion is as the criterion with the partial enlarged drawing of Fig. 4.Because described top to side forms the arc profit characteristic of an arc edge (254) to side; Therefore can prevent that described first to the 3rd the riveting line outer rim coated insulation layer (242) of putting line tube (241), (221), (231), (222), (232) from producing cuts damage, and avoids described insulating barrier (242), (222), (232) damaged electric leakage that is produced dangerous.。
See also shown in Figure 7ly, two top corner (or only at a medial angle) that arc edge of the present invention (254A) is located at a straight excrescence (255) form described arc edge (254A).And described arc edge (254A) can be less because of area, and make externally profile of described straight excrescence (255), section generally be a rectangle.Perhaps other can make frame wall (253) top form the structure of any equivalence of an arc edge (254A) to side.Cut damage to prevent the riveting line outer rim coated insulation layer (242) of putting line tube (241), (221), (231), (222), (232) generation of described first to the 3rd.And electric leakage of avoiding described insulating barrier (242), (222), (232) breakage to be produced is dangerous.
See also Fig. 8 and shown in Figure 9; The other a kind of embodiment of the present invention; A base pieces (256) is established in scarce portion space (252) bottom of described pressure cover (25); Described base pieces (256) is provided with spacer (257), (258) of two spaces, and described two spacers (257), (258) extend to described scarce portion space (252).And the periphery of described spacer (257), (258) (comprising positions such as top, side), top to side also can form an arc edge (259), and the description of this section portion is as the criterion with the upper left partial enlarged drawing of Fig. 8.
Seeing also Figure 10 is the plug finished product (3) that shows that the present invention accomplished.
In sum, the present invention possesses practical function, and does not see in publication or public use, meets patent requirement, proposes patent application in accordance with the law.
The above is merely preferred embodiment of the present invention, only is illustrative for the purpose of the present invention, and nonrestrictive.Those skilled in the art is understood, and in spirit that claim of the present invention limited and scope, can carry out many changes to it, revise, in addition equivalent, but all will fall in protection scope of the present invention.
Claims (1)
1. the inner bracket of power plug pressure cover of a tool grounding elastic part is constructed, and described internal frame comprises an inner frame body, respectively is provided with a positive and negative electrode terminal on the described inner frame body; And be provided with a grounding elastic part; Wear a ground wire hole on the described grounding elastic part, and described grounding elastic part is that bending is shaped, and makes up through build-in with the end and the inner frame body of described grounding elastic part; Described grounding elastic part one sidepiece extends first of a hollow tube-shape to the inner frame body trailing flank and puts the line tube; Described positive and negative electrode terminal also extends second of a hollow tube-shape to the inner frame body trailing flank to be put line tube and the 3rd and puts the line tube, and a pressure cover is established at the back of described inner frame body, and described pressure cover overlaps described inner frame body with periphery; And pressure cover top is run through one after by forward direction and is lacked the portion space; Allow that first to the 3rd the riveting line of putting the line tube passes through, and is characterized in that: frame wall top to the side in described scarce portion space forms an arc edge, prevents that through described arc edge described first to the 3rd the insulating barrier generation of putting line tube riveting line from cutting damage; Described arc edge is located at a straight excrescence, has at least one top corner;
A base pieces is established in the bottom, scarce portion space of described pressure cover, and described base pieces is provided with the spacer of two spaces, and described two spacers extend to described scarce portion space, and described spacer periphery, and top to side forms another arc edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101275218A CN101615740B (en) | 2008-06-25 | 2008-06-25 | Improved structure of internal-frame pressure cover of powder supply plug with grounding spring piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101275218A CN101615740B (en) | 2008-06-25 | 2008-06-25 | Improved structure of internal-frame pressure cover of powder supply plug with grounding spring piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101615740A CN101615740A (en) | 2009-12-30 |
| CN101615740B true CN101615740B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101275218A Active CN101615740B (en) | 2008-06-25 | 2008-06-25 | Improved structure of internal-frame pressure cover of powder supply plug with grounding spring piece |
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| CN (1) | CN101615740B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104092036A (en) * | 2014-06-12 | 2014-10-08 | 常熟利星光电科技有限公司 | Safety type three-pin power plug |
| CN107645077B (en) * | 2016-07-22 | 2020-06-30 | 建通精密工业股份有限公司 | Core wire isolation structure of plug inner frame |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574474A (en) * | 1983-05-20 | 1986-03-11 | U.S. Philips Corporation | Method and apparatus for molding an electrical plug with internal protective cap |
| EP0274605A1 (en) * | 1986-11-29 | 1988-07-20 | Taller GmbH | Plug with protective contact provided with pin supporting bridge and protection cap |
| GB2273006A (en) * | 1992-11-26 | 1994-06-01 | Taller Gmbh | Electrical plug insulator and protective cap arrangement |
| CN2711931Y (en) * | 2004-05-10 | 2005-07-20 | 建通精密工业股份有限公司 | Inner frame structure for plug |
| CN201075468Y (en) * | 2007-06-29 | 2008-06-18 | 莱尼电气线缆（常州）有限公司 | UK plug adapter component |
-
2008
- 2008-06-25 CN CN2008101275218A patent/CN101615740B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4574474A (en) * | 1983-05-20 | 1986-03-11 | U.S. Philips Corporation | Method and apparatus for molding an electrical plug with internal protective cap |
| EP0274605A1 (en) * | 1986-11-29 | 1988-07-20 | Taller GmbH | Plug with protective contact provided with pin supporting bridge and protection cap |
| GB2273006A (en) * | 1992-11-26 | 1994-06-01 | Taller Gmbh | Electrical plug insulator and protective cap arrangement |
| CN2711931Y (en) * | 2004-05-10 | 2005-07-20 | 建通精密工业股份有限公司 | Inner frame structure for plug |
| CN201075468Y (en) * | 2007-06-29 | 2008-06-18 | 莱尼电气线缆（常州）有限公司 | UK plug adapter component |
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| Publication number | Publication date |
|---|---|
| CN101615740A (en) | 2009-12-30 |
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