CN102436939B - Rolling type contact assembly - Google Patents
Rolling type contact assembly Download PDFInfo
- Publication number
- CN102436939B CN102436939B CN201110303767.8A CN201110303767A CN102436939B CN 102436939 B CN102436939 B CN 102436939B CN 201110303767 A CN201110303767 A CN 201110303767A CN 102436939 B CN102436939 B CN 102436939B
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- contact
- stem
- rolling
- assembly
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
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Abstract
The invention discloses a rolling type contact assembly, which comprises a contact seat and a pair of contact rods arranged on the contact seat. The rolling type contact assembly is characterized in that a first end of each contact rod is provided with a rolling wheel contact in a shafting way, the rolling wheel contacts can rotate around respective contact rods, and the pair of contact rods applies the clamping force through a spring component arranged at the second ends of the contact rods corresponding to the first ends. Compared with the prior art, the rolling type contact assembly has the following obvious advantages that 1, the rolling friction is realized during the action between the rolling wheel contact and a contacted contact, and the mechanical service life of the contacts can be effectively prolonged; 2, the structure is simple and compact, the production and the maintenance are convenient, and the production cost is reduced; and 3, the shape of a spring is simple, the processing production is easy, and the mechanical service life is long.
Description
Technical field:
The present invention relates to load tap changer contact component technology field, particularly a kind of rolling contact assembly.
Background technology:
The moving contact that traditional on load tap changer is used, as shown in Figure 1, it is a kind of clip type sets of contacts, this clip type sets of contacts is comprised of upper and lower two chip contacts 1,1a, in the middle of the contact 2 being connected is clamped in, upper and lower two chip contacts 1,1a rely on respectively spring 3,3a to apply chucking power.This clip type sets of contacts structure causes switching over resistance larger, and contact partly weares and teares comparatively fast, and mechanical endurance is shorter, and the metal particle of wearing and tearing also easily pollutes the insulating transformer oil in switch.
Summary of the invention:
Technical problem to be solved by this invention is intended to overcome the deficiency of above-mentioned prior art, and propose a kind ofly switch the rolling contact assembly that resistance is little, the life-span is long.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
A kind of rolling contact assembly, comprise contact base and be arranged on a pair of contact stem on contact base, it is characterized in that, first end axle in each contact stem is provided with a roller contact, described roller contact can be around contact stem revolution separately, and described a pair of contact stem applies chucking power by being arranged at the spring members of the second end of the relative first end of contact stem.
In a preferred embodiment of the invention, be provided with a fulcrum in described contact base, described a pair of contact stem is supported on respectively the relative both sides of described fulcrum one.
In a preferred embodiment of the invention, described spring members is a U-shaped spring, and described U-shaped spring is arranged in the spring eye in described contact stem the second end by the second end insertion of a pair of contact stem.
In order to limit described contact stem, rotate, on the length direction of described contact stem, be provided with plat part, described contact base is clamped on described plat part.
The length of described plat part is less than or equal to the length of described contact stem.
In order to limit described contact stem axial endplay, on the length direction of described contact stem, be provided with depressed part, on described contact base, be provided with align member, described align member sinks in described depressed part.
Described positioning element is one to be screwed in the dog screw on described contact base.
In a preferred embodiment of the invention, described depressed part is arranged in described plat part.
In a preferred embodiment of the invention, described contact base and a pair of contact stem, roller contact adopt electric conducting material to make, and are provided with electric interface on described contact base, and described electric interface picks out electric current.
In a preferred embodiment of the invention, described contact base adopts insulating material to make, and described fulcrum, a pair of contact stem, roller contact adopt electric conducting material to make, described fulcrum and described a pair of contact stem electrically contact, in described fulcrum, be connected with a binding post, described binding post is drawn outside described contact base.
Because the present invention has adopted technique scheme, compared with prior art, there is following remarkable advantage:
1. roller contact and to be touched while moving between contact be rolling friction, can effectively extend contact mechanical endurance.
2. simple for structure, production and easy to maintenance, reduces production costs.
3. spring simple shape, easily processing, mechanical endurance is long.
Accompanying drawing explanation:
Fig. 1 is structure and the scheme of installation of former clip type sets of contacts.
Fig. 2 is application example schematic diagram of rolling contact assembly of the present invention.
Fig. 3 is the structural representation of the embodiment of the present invention 1 rolling contact assembly.
Fig. 4 is the structural representation after a part of contact base of the embodiment of the present invention 1 rolling contact assembly is hidden.
Fig. 5 is spring members and the contact stem assembling schematic diagram of the embodiment of the present invention 1 rolling contact assembly.
Fig. 6 is the structural representation of the embodiment of the present invention 2 rolling contact assemblies.
Fig. 7 is the structural representation after the contact base of the embodiment of the present invention 2 rolling contact assemblies is hidden.
Fig. 8 is the internal structure schematic diagram of the embodiment of the present invention 2 rolling contact assemblies.
Embodiment
Embodiment further describes the present invention below, but described embodiment is only for illustrating the present invention rather than restriction the present invention.
Embodiment 1
Referring to Fig. 2 to Fig. 5, the rolling contact assembly shown in figure, comprises a contact base, and this contact base consists of a support component 110 and two hold assemblies 120,120a, and support component 110 and two hold assemblies 120,120a adopt electric conducting material to make.In support component 110, be provided with two respectively in order to hold two hold assemblies 120, the holding tank 111 of 120a, 111a, holding tank 111,111a become upper and lower layout, centre is that 112, two hold assemblies 120 of fulcrum, 120a rely on fulcrum 112 to float among a small circle up and down.In the both sides of support component 110 rear ends, be respectively provided with one in order to support component is arranged on to installation portion 113, the 113a on shunting switch member, on installation portion 113,113a, respectively offer a through hole 1131,1131a, by bolt (not shown), through through hole 1131,1131a, support component 110 is arranged on shunting switch member 200.
Holding tank 111,111a bilateral symmetry at support component 110 respectively offer a bolt hole (not shown), with four bolts 130, revolved this four bolts hole, two hold assemblies 120,120a can be arranged on respectively in holding tank 111,111a relatively regularly.
Hold assembly 120 is comprised of the identical holding piece 121 of two block structures, all offers a mounting hole 1211 on each holding piece 121, in order to bolt 130, passes.Equally, hold assembly 120a is comprised of the identical holding piece 121a of two block structures, all offers a mounting hole 1211a on each holding piece 121a, in order to bolt 130, passes.
This rolling contact assembly also comprises a pair of contact stem 130,130a, and contact stem 130,130a are roughly cylindric, can certainly be that cross section is rectangle or square column structure.The middle part that is roughly columned contact stem 130,130a is provided with plat part 131,131a and depressed part 132,132a, the length of depressed part 132,132a and plat part 131,131a's is equal in length, and just in time equal the length of holding piece 121,121a, two of hold assembly 120 holding pieces 121 are just in time clipped on the plat part 131 of contact stem 130 and in depressed part 132 like this.Two holding pieces 121 at hold assembly 120 are clamped after contact stem 130, two bolts 130 through the mounting hole 1211 on two holding pieces 121 hold out against plat part 131 from the both sides of plat part 131, contact stem 130 neither can be rotated in hold assembly 120, again can axial endplay.Two holding piece 121a of same hold assembly 120a are just in time clipped in the upper and depressed part 132a of the plat part 131a of contact stem 130a.Two holding piece 121a at hold assembly 120a clamp after contact stem 130a, two bolts 130 through the mounting hole 1211a on two holding piece 121a hold out against plat part 131a from the both sides of plat part 131a, contact stem 130a neither can be rotated in hold assembly 120a, again can axial endplay.
At the two ends of contact stem 130,130a, each axle is provided with a roller contact 133,134 and roller contact 133a, 134a respectively, and near the inside of roller contact 134,134a one end, offer porose 135,135a in contact stem 130,130a, with a U-shaped spring 140, be inserted in hole 135,135a, just apply a clamping force can to contact stem 130,130a.
Referring to Fig. 2, when this embodiment is used, the clamping force that the roller contact 133 of contact stem 130,130a one end, 133a rely on U-shaped spring 140 to apply is clamped on the moving contact 220 of on load tap changer, when moving contact 220 turns round under the drive of switch spindle 230, roller contact 133,133a only can roll on the surface of moving contact 220, and can not slide, can effectively extend like this moving contact 220 and roller contact 133,133a mechanical endurance.The leverage that the roller contact 134 of contact stem 130, the 130a other end, 134a are subject to contact stem and step up conduction supporting base 210 on electric current is connected.
Embodiment 2
Referring to Fig. 6 to Fig. 8, the rolling contact assembly shown in figure, comprises a contact base, and this contact base consists of two sheet hold assemblies 310,310a, and two sheet hold assemblies 310,310a adopt insulating material to make; Certain two sheet hold assemblies 310,310a also can adopt electric conducting material to make.If adopt electric conducting material to make, in the rear end of two sheet hold assemblies 310,310a, be provided with electric interface 311,311a, electric current is connected in electric interface 311,311a and the electric conductor contact contacting.What the present embodiment was selected is that two sheet hold assemblies 310,310a adopt insulating material to make, and offers binding post fairlead 312 therein on a sheet hold assembly 310.
At two sheet hold assemblies 310,310a, near the upper-lower position of rear end, respectively offer bolt hole 313,314 and bolt hole 313a, a 314a, in bolt hole 313,314,313a, 314a, be respectively rotary with a contact dog screw 315,316,315a, 316a.
This rolling contact assembly also comprises a pair of contact stem 320,320a, and it is rectangle or square column structure that contact stem 320,320a are roughly cross section, can certainly be for cylindric.The contact stem 320, the 320a that are roughly cross section and are rectangle or square column structure are each side provided with depressed part 321,322 and depressed part 321a, a 322a near the position of rear end, at the front end of contact stem 320,320a, by catch 323,323a axle, are provided with roller contact 324,324a.In contact stem 320,320a, offer porose 325,325a, the opening of hole 325,325a is towards the rear end of contact stem 320,320a.
During installation, first with two sheet hold assemblies 310,310a, clamp contact stem 320,320a, then tighten a little contact dog screw 315,316,315a, 316a, contact dog screw 315,316,315a, 316a are dropped into respectively in the depressed part 321,322 and depressed part 321a, 322a of contact stem 320,320a, between contact stem 320,320a rear end, insert fulcrum 330 again, U-shaped spring 340 is inserted into simultaneously contact stem 320,320a 325, in 325a, tighten contact dog screw 315,316,315a, 316a can complete assembling.Finally binding post 350 is inserted by the binding post fairlead 312 on sheet hold assembly 310, be screwed in fulcrum 330.The fulcrum 330 of the present embodiment, contact stem 320,320a, roller contact 324,324a all adopt electric conducting material to make, so electric current can be drawn by roller contact 324,324a, contact stem 320,320a, fulcrum 330 and binding post 350.
The rolling contact assembly of the present embodiment is when free state, and under the spring force and fulcrum 330 effects of U-shaped spring 340, front end two roller contacts 324,324a are substantially also together.The front end of contact stem 320,320a has catch 323,323a, makes roller contact 324,324a on contact stem 320,320a, roll and can not fall down again.
After roller contact 320,320a contact with blade-like fixed contact, blade-like fixed contact enters between roller contact 320,320a, and roller contact 320,320a are strutted, and roller contact has certain clamping force to sheet fixed contact, make basic keeping parallelism state between roller contact 320,320a
Above content shows and has described basic principle of the present invention, principal character and advantage of the present invention.The personnel of the industry should understand; the present invention is not subject to the restriction of above-mentioned example; that in above-mentioned example and explanation, describes just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all will fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (9)
1. a rolling contact assembly, comprise contact base and be arranged on a pair of contact stem on contact base, it is characterized in that, first end axle in each contact stem is provided with one first roller contact, described the first roller contact can be around contact stem revolution separately, and described a pair of contact stem applies chucking power by being arranged at the spring members of the second end of the relative first end of contact stem; In described contact base, be provided with a fulcrum, described a pair of contact stem is supported on respectively the relative both sides of described fulcrum one; The second end axle in each contact stem is provided with the second roller contact, and the second roller contact is subject to the leverage of contact stem and steps up on the supporting base of conduction, electric current to be connected.
2. rolling contact assembly as claimed in claim 1, is characterized in that, described spring members is a U-shaped spring, and described U-shaped spring is arranged in the spring eye in described contact stem the second end by the second end insertion of a pair of contact stem.
3. rolling contact assembly as claimed in claim 2, is characterized in that, on the length direction of described contact stem, is provided with plat part, and described contact base is clamped on described plat part.
4. rolling contact assembly as claimed in claim 3, is characterized in that, the length of described plat part is less than or equal to the length of described contact stem.
5. rolling contact assembly as claimed in claim 3, is characterized in that, on the length direction of described contact stem, is provided with depressed part, on described contact base, is provided with align member, and described align member sinks in described depressed part.
6. rolling contact assembly as claimed in claim 5, is characterized in that, described positioning element is one to be screwed in the dog screw on described contact base.
7. rolling contact assembly as claimed in claim 6, is characterized in that, described depressed part is arranged in described plat part.
8. the rolling contact assembly as described in claim 1 to 7 any one claim, it is characterized in that, described contact base and a pair of contact stem, roller contact adopt electric conducting material to make, and are provided with electric interface on described contact base, and described electric interface picks out electric current.
9. the rolling contact assembly as described in claim 1 to 7 any one claim, it is characterized in that, described contact base adopts insulating material to make, and described fulcrum, a pair of contact stem, roller contact adopt electric conducting material to make, described fulcrum and described a pair of contact stem electrically contact, in described fulcrum, be connected with a binding post, described binding post is drawn outside described contact base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303767.8A CN102436939B (en) | 2011-09-30 | 2011-09-30 | Rolling type contact assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110303767.8A CN102436939B (en) | 2011-09-30 | 2011-09-30 | Rolling type contact assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436939A CN102436939A (en) | 2012-05-02 |
| CN102436939B true CN102436939B (en) | 2014-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110303767.8A Active CN102436939B (en) | 2011-09-30 | 2011-09-30 | Rolling type contact assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436939B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11078698B2 (en) | 2016-02-01 | 2021-08-03 | Brigham Young University | Non-planar closed-loop hinge mechanism with rolling-contact hinge |
| CN107170631B (en) * | 2017-06-25 | 2019-05-21 | 武汉凯禾电气有限责任公司 | A kind of high current load switch |
| CN110233071A (en) * | 2019-06-21 | 2019-09-13 | 国家电网有限公司 | A kind of reversing switch mounting structure of vacuum on-load operation switch |
| CN112490035B (en) * | 2020-12-17 | 2024-10-15 | 国网湖北省电力有限公司电力科学研究院 | Rolling type mechanical contact with spring piece structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182448Y (en) * | 1993-08-29 | 1994-11-09 | 刘刚 | Rolling contact for tapping switch of transformer |
| CN202363286U (en) * | 2011-09-30 | 2012-08-01 | 上海华明电力设备集团有限公司 | Rolling type contact assembly |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3780239A (en) * | 1972-10-27 | 1973-12-18 | Westinghouse Electric Corp | Electrical contact assembly |
| JPH06349371A (en) * | 1993-06-08 | 1994-12-22 | Mitsubishi Electric Corp | Switch |
| JP3591828B2 (en) * | 2000-10-23 | 2004-11-24 | 有限会社田島製作所 | Roller contact device for tap selector and tap selector |
| JP2010186719A (en) * | 2009-02-13 | 2010-08-26 | Daihen Corp | Changeover switch |
-
2011
- 2011-09-30 CN CN201110303767.8A patent/CN102436939B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182448Y (en) * | 1993-08-29 | 1994-11-09 | 刘刚 | Rolling contact for tapping switch of transformer |
| CN202363286U (en) * | 2011-09-30 | 2012-08-01 | 上海华明电力设备集团有限公司 | Rolling type contact assembly |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2002-134337A 2002.05.10 |
| JP特开2010-186719A 2010.08.26 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102436939A (en) | 2012-05-02 |
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| C14 | Grant of patent or utility model | ||
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Free format text: FORMER OWNER: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., SHANGHAI Effective date: 20141208 Owner name: HUAMING POWER EQUIPMENT MANUFACTURING CO., LTD., S Free format text: FORMER OWNER: SHANGHAI HUAMING POWER EQUIPMENT GROUP CO., LTD. Effective date: 20141208 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141208 Address after: 200333 Shanghai city Putuo District No. 977 in the same way Patentee after: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai Address before: 200333 Shanghai city Putuo District No. 977 in the same way Patentee before: Shanghai Huaming Power Equipment Group Co., Ltd. Patentee before: Huaming Power Equipment Manufacturing Co., Ltd., Shanghai |