CN114420514A

CN114420514A - Multi-contact independent motion structure

Info

Publication number: CN114420514A
Application number: CN202210101438.3A
Authority: CN
Inventors: 高柏勇; 高磊啸; 吴琼露; 包晓忠; 胡昌勇; 刘泽州; 刘曙彬
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2022-04-29
Anticipated expiration: 2042-01-27
Also published as: CN114420514B

Abstract

The invention discloses a multi-contact independent movement structure, which comprises two first contacts and at least one second contact which are rotatably arranged on a rotating shaft structure through a first rotating shaft, wherein a contact sleeve structure is rotatably arranged between the two first contacts and the second contact through the first rotating shaft, the contact sleeve structure is movably sleeved on the second contact and separates the two first contacts from the second contact adjacently, a driving part for driving the contact sleeve structure to rotate penetrates through at least one first contact or the second contact and the contact sleeve structure, by adopting the technical scheme, the contact sleeve structure can ensure that the plurality of contacts can keep verticality to the maximum extent without generating lateral deviation phenomenon, and simultaneously, the movement independence among the plurality of contacts is not influenced, and the total current-carrying area of the contacts is ensured after the plurality of contacts are separated by the contact sleeve structure adjacently, so that the current-carrying capacity of a movable contact assembly is improved, the service performance and the maximum rated current of the product are improved.

Description

Multi-contact independent motion structure

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a multi-contact independent movement structure.

Background

The low-voltage circuit breaker is a switching device which is used in the protection circuits of distribution circuits and various electric equipment, can connect, bear and break the current under the condition of normal circuit, and can prevent the electric equipment from being damaged by overload and short-circuit faults. The contact system is used as an important component of a low-voltage circuit breaker, performance parameters and operation performance of the contact system directly influence various technical indexes of the circuit breaker, particularly the initial pressure and the final pressure of a contact of a high-current low-voltage circuit breaker influence the temperature rise, the service life and the breaking capacity of a product.

The maximum rated current of the existing plastic shell type low-voltage circuit breaker is usually 800A, because a contact system is limited by a structural form and space, the contact system can be generally only made into a single-piece contact or a double-piece contact form, the efficiency of improving the current carrying capacity of the contact is lower according to the fact that the current passes through the surface of the contact and the volume of the contact is increased, so that the current carrying capacity of the contact is limited, and in addition, the current carrying capacity of the contact system is greatly limited due to the fact that the contact resistance and the temperature rise of the contact are high, and the maximum rated current of the low-voltage circuit breaker is difficult to be increased.

Therefore, chinese patent document CN111769015A discloses a multi-piece moving contact for a molded case circuit breaker, which includes a support and a contact frame movably mounted on the support through a rotating shaft, wherein a plurality of contact fingers are mounted on the rotating shaft in parallel, each contact finger can rotate around the rotating shaft independently, a partition plate is mounted between two adjacent contact fingers, a contact rod is disposed at the bottom end of each contact finger, a first rivet and a second rivet are mounted on the contact rod respectively, an upper contact spring and a lower contact spring are housed on the contact frame through spring slots respectively, and the end portions of the upper contact spring and the lower contact spring are respectively sleeved on the first rivet and the second rivet; the partition board is arranged between the two contact fingers through a first cylinder and a second cylinder, and the first cylinder and the second cylinder are respectively arranged in the corresponding holes of the two adjacent contact fingers.

It can be seen from the structure of the multi-piece moving contact of the molded case circuit breaker, the following problems still exist: 1. the partition board is arranged in the holes of two adjacent contact fingers through two cylinders, the movable clearance of the matching between the cylinders and the holes is very small, the requirement on the installation process is very high, the contact fingers at two sides can easily drive the contact fingers at the middle part to act together through the partition board, the motion independence of the contact fingers at the middle part cannot be really realized, and the use performance of a product is influenced; 2. the contact springs are divided into an upper group and a lower group and are connected to the contact rods of the plurality of contact fingers through the first rivets and the second rivets in a positioning mode, the mounting structure is complex, the number of assembled parts is large, the occupied space is large, the assembly is complex, the assembly efficiency is reduced, and the production cost is increased.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the problems that the partition plate in the prior art is arranged between two adjacent contact fingers through two cylinders, the requirement on the installation process is high, the contact fingers at two sides are easy to drive the contact fingers at the middle part to act together through the partition plate, the motion independence of the contact fingers at the middle part cannot be really realized, and the use performance of a product is influenced.

In order to solve the technical problem, the invention provides a multi-contact independent movement structure, which comprises a rotating shaft structure, a moving contact component and a contact spring component, wherein the moving contact component is arranged on the rotating shaft structure in a side-by-side rotating manner through a first rotating shaft, the contact spring component is arranged between the moving contact component and the rotating shaft structure, the moving contact component comprises two first contacts which are arranged on the outermost side, at least one second contact which is arranged between the two first contacts, and a contact sleeve structure which is arranged between the two first contacts and the second contact in a rotating manner through the first rotating shaft, the two first contacts and the second contact can be relatively rotatably arranged around the first rotating shaft, the contact sleeve structure can movably surround the second contact and separate the two first contacts from the second contact adjacently, and a movable gap is oppositely formed between the top of the second contact and the contact sleeve structure, and a driving piece for driving the contact sleeve structure to rotate is arranged between at least one first contact or second contact and the contact sleeve structure in a penetrating manner.

In the above-mentioned many contacts independent motion structure, the driving piece passes second contact and contact cover structural connection two first contact, it can supply to correspond to be provided with on the second contact the driving piece rotates the waist shape hole that passes through, two be provided with relatively on the first contact with two connecting holes of driving piece cooperation installation, second contact top with relative being formed with the activity space between the contact cover structure.

In the above-mentioned multiple-contact independent movement structure, the second contact is provided with a fixing hole for fastening and connecting the driving member, and the driving member is inserted into the fixing hole and fixedly connected with the second contact.

In the above-mentioned multiple-contact independent movement structure, the contact sleeve structure has at least one receiving section adapted to receive at least one second contact, and a U-shaped protrusion formed on the top of the receiving section and spanning above the top of the second contact, and the U-shaped protrusion and the top of the second contact form the movable gap therebetween.

In the above-mentioned many contacts independent motion structure, contact cover structure is including connecting at least two curb plate face of second contact both sides to and integrated connection between two curb plate face tops the U-shaped arch, two the relative being provided with of curb plate face is used for connecting the first through-hole of first pivot, and is used for connecting the second through-hole of driving piece.

In the above-mentioned multiple-contact independent movement structure, one end of each of the two first contacts and one end of each of the two second contacts are rotatably disposed in the mounting cavity of the rotating shaft structure through the first rotating shaft, the contact spring assembly includes two first springs disposed between one end of each of the two first contacts and the rotating shaft structure, and a second spring disposed between one end of each of the two second contacts and the rotating shaft structure, the two first contacts are limited at one end of each of the two first springs by the first positioning structures, the second contact is limited at one end of the second spring by the second positioning structures, and the other ends of the two first springs and the other ends of the two second springs are positioned in the plurality of positioning grooves formed in the mounting cavity.

In the above-mentioned multiple-contact independent movement structure, the positioning boss is integrally formed on the protrusion at the bottom of one end of the second contact, and one end of the second spring is sleeved on the positioning boss.

In the above-mentioned multiple-contact independent movement structure, the first positioning structure includes: the pressing plate structure is rotatably arranged in the installation cavity and is matched and abutted with one ends of the two first springs, the positioning rotating shaft is respectively arranged on the side surface of the two first contacts, which is back to the second contact, in a penetrating manner and is abutted to the pressing plate structure, and the pressing plate structure is provided with two positioning columns which are connected with one ends of the two first springs in a positioning manner.

In the above-mentioned multiple-contact independent movement structure, the driving member is the positioning rotating shaft, the positioning rotating shaft integrally penetrates through the slotted hole of the second contact to connect the two first contacts, and two ends of the positioning rotating shaft respectively penetrate through the side surfaces of the two first contacts.

In the above-mentioned multiple-contact independent movement structure, two positioning rotating shafts are arranged on two first contacts in a split structure in a penetrating manner along the same axial direction, one ends of the two positioning rotating shafts are located on two sides of the second contact in a relative manner, the other ends of the two positioning rotating shafts extend out of the side faces of the two first contacts respectively, and at least one positioning rotating shaft passes through the first contact and is connected with the contact sleeve structure.

In foretell many contacts independent motion structure, the clamp plate structure rotates through the second pivot to set up in the installation cavity, the clamp plate structure is in including the notch of stepping down that can supply the one end of first contact and second contact to pass, and the shaping the notch both sides of stepping down and with two location plate portions of location pivot complex, and set up two lug portion at clamp plate structure both ends, the second pivot is passed two lug portion and is rotated and connect on the both sides lateral wall of installation cavity.

In the above-mentioned multi-contact independent movement structure, the pressing plate structure includes two small pressing plates respectively connected to the two first springs, and the two small pressing plates form a coaxial rotation fit through the second rotating shaft.

In the above-mentioned multi-contact independent motion structure, the two ends of the first rotating shaft are respectively connected in the two rotating grooves of the side walls on the two sides of the installation cavity through the shaft sleeves, two limiting snap springs for limiting the shaft sleeves to be separated from the rotating grooves are fixedly arranged on the first rotating shaft, and rotating shaft supports located on the two sides of the two first contacts are further arranged on the first rotating shaft.

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. in the multi-contact independent movement structure provided by the invention, a contact sleeve structure sleeved and surrounded on the second contact is rotatably arranged between the two first contacts, the contact sleeve structure is connected with the contact sleeve structure through a driving piece according to at least one first contact or at least one second contact, namely the contact sleeve structure rotates relative to the second contact under the drive of the first contact, or the contact sleeve structure rotates relative to the two first contacts under the drive of the second contact, so that the second contact and the two first contacts can rotate relative to each other around a shaft, the movement independence of the second contact is really realized, the contact sleeve structure has small volume design and simple installation, the installation gap among the contacts can be reduced through the contact sleeve structure, the verticality of the contacts can be kept to the maximum extent without generating a lateral deviation phenomenon, and the movement independence among the contacts is not influenced, the two first contacts and the at least one second contact can relatively rotate to reach a certain overtravel when the movable contact component is in closed contact with the fixed contact, and the total current-carrying area of the contacts is ensured after the plurality of contacts are adjacently separated by the contact sleeve structure, so that the current-carrying capacity of the movable contact component is improved, the temperature rise and the contact resistance of the contacts are favorably reduced, the service performance of a product is improved, and the maximum rated current of the low-voltage circuit breaker is increased.

2. In the multi-contact independent movement structure provided by the invention, the driving part can only penetrate between one first contact and the contact sleeve structure or between two first contacts and the contact sleeve structure, so that the two first contacts drive the contact sleeve structure to synchronously rotate through the driving part, the transmission stress is stable, the driving part needs to penetrate through the second contact, and the contact sleeve structure drives the driving part to move in the kidney-shaped hole when rotating along with the first contact by arranging the kidney-shaped hole which can be used for the driving part to rotate through on the second contact, so that the design avoids the movement interference between the driving part and the second contact, and the movement independence of the second contact relative to the two first contacts is ensured.

3. In the multi-contact independent movement structure provided by the invention, two side plate surfaces and the U-shaped bulges of the contact sleeve structure are designed in an integrated manner, the U-shaped bulges are spanned above the top of the second contact, so that a movable gap for the second contact to rotate is formed between the U-shaped bulges and the second contact, the contact sleeve structure designed in the way is surrounded on two sides of the second contact to adjacently separate a plurality of contacts and form a certain interval, and the independent rotation of pressing the second contact is not limited, the design is reasonable, the matching is reliable, when in installation, the contact sleeve structure realizes coaxial rotating connection with the first contact and the second contact through the first rotating shaft, then the driving piece penetrates through the contact sleeve structure and is connected into the connecting hole of the first contact, so that the installation process of the contact sleeve structure is realized, the installation structure is simple, and the assembly is more convenient, the assembly efficiency is improved.

4. In the multi-contact independent movement structure provided by the invention, the contact spring assembly comprises two first springs for connecting two first contacts and a second spring for connecting the second contact, the first contacts are limited on one ends of the two first springs by abutting and matching of the pressure plate structure and the positioning columns, the second contact is limited on one end of the second spring by the positioning bosses formed on the second contact, and the other ends of the first spring and the second spring are positioned and connected in the positioning grooves of the rotating shaft structure, so that the positioning installation of the first spring and the second spring between the first contact and the rotating shaft structure is realized, the contact pressure is provided for the two first contacts and the second contact, the positioning bosses are integrally formed on the second contact, the structure has good stability, the molding and the manufacturing are convenient, and the integral positioning installation of the second spring is convenient, the pressing plate structure is rotationally pressed against the first spring, and the rotating angle can be correspondingly adjusted along with the rotation stress of the first contact, so that the adjusting freedom degree is good, the installation stress is more stable, the contact spring installation structure designed by the technical scheme is simple, and compared with an installation mode of a plurality of groups of rivets in the prior art, the contact spring installation structure has the advantages that the number of parts needed for installation is small, the structure is more compact, the assembly process is simplified, the installation is more convenient and easier, the installation efficiency is improved, and the production cost is reduced.

5. In the multi-contact independent movement structure provided by the invention, the driving part is a positioning rotating shaft which is respectively arranged on the side surfaces of the two first contacts back to the second contact in a penetrating way and is abutted against the pressure plate structure, because the driving piece and the positioning rotating shaft are designed in a shared structure, the contact pressure action from the first spring can be transmitted between the first contact and the first spring, the first spring is positioned and installed through the matching of the pressure plate structure and the positioning rotating shaft, and the connection function can be realized between the first contact and the contact sleeve structure, so that the contact sleeve structure is driven to synchronously move when the first contact rotates, therefore, the reasonable optimization design of the product structure and the matched parts is realized, the number of installation parts is reduced, the assembly is also convenient, the structure is more compact, and the production cost is reduced.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below.

FIG. 1 is a schematic perspective view of the multiple-contact independent movement structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the multiple-contact independent movement structure of the present invention;

FIG. 3 is a schematic view of the mounting structure of the moving contact assembly and the contact spring assembly of the present invention;

FIG. 4 is a schematic plan view of the moving contact assembly and contact spring assembly of the present invention;

FIG. 5 is a schematic structural view of a contact sleeve structure of the present invention;

FIG. 6 is a schematic view of the connection structure of the moving contact assembly of the present invention with an integral pressure plate structure;

FIG. 7 is a schematic cross-sectional view of the positioning shaft shown in FIG. 6;

FIG. 8 is a schematic view of the connection structure of the moving contact assembly and the split-type pressing plate structure of the present invention;

FIG. 9 is a schematic cross-sectional view of another variation of the positioning shaft shown in FIG. 8;

figure 10 is a schematic view of a mounting arrangement of the contact sleeve arrangement of the present invention with a second contact;

description of reference numerals: 1. a rotating shaft structure; 10. a rotating shaft bracket; 11. a mounting cavity; 12. a rotating groove; 13. a positioning groove; 2. a first contact; 3. a second contact; 31. a waist-shaped hole; 32. positioning the boss; 4. a contact sleeve structure; 40. a movable gap; 41. a side panel surface; 42. a U-shaped protrusion; 43. an accommodation section; 44. a first through hole; 5. a drive member; 6. a first rotating shaft; 61. a shaft sleeve; 62. a limiting clamp spring; 7. a second rotating shaft; 8. a contact spring assembly; 81. a first spring; 82. a second spring; 9. a platen structure; 90. a small pressing plate; 91. a positioning plate portion; 92. a lug portion.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the embodiment provides a multi-contact independent movement structure as shown in fig. 1-10, which is used for a molded case circuit breaker and comprises a rotating shaft structure 1, a movable contact component arranged on the rotating shaft structure 1 in a side-by-side rotating mode through a first rotating shaft 6, and a contact spring component 8 arranged between the movable contact component and the rotating shaft structure 1, wherein the movable contact component comprises two first contacts 2 arranged on the outermost side, at least one second contact 3 arranged between the two first contacts 2, and a contact sleeve structure 4 arranged between the two first contacts 2 and the second contact 3 in a rotating mode through the first rotating shaft 6, the two first contacts 2 and the two second contacts 3 are relatively rotatably arranged around the first rotating shaft 6, the contact sleeve structure 4 is movably sleeved on the second contact 3 and separates the two first contacts 2 from the second contact 3, a driving part 5 for driving the contact sleeve structure 4 to rotate is arranged between at least one first contact 2 or second contact and the contact sleeve structure 4 in a penetrating manner, namely, the contact sleeve structure 4 is in linkage fit with one of the first contacts through the driving part, or the contact sleeve structure 4 is in linkage fit with the second contact through the driving part.

In the above embodiment, according to at least one first contact 2 or second contact connected to the contact sleeve structure 4 through the driving member 5, that is, the contact sleeve structure is driven by the first contact to rotate relative to the second contact, or the contact sleeve structure is driven by the second contact to rotate relative to the two first contacts, so that the second contact and the two first contacts can rotate relative to each other around the shaft, thereby truly achieving the motion independence of the second contact 3, and the contact sleeve structure 4 has a small volume design and is simple to install, the contact sleeve structure 4 can reduce the installation gap between the plurality of contacts, so as to ensure that the plurality of contacts can maintain verticality to the maximum extent without lateral deviation, and simultaneously, the motion independence between the plurality of contacts is not affected, so that the two first contacts 2 and the at least one second contact 3 can rotate relative to reach a certain over travel when the moving contact component and the fixed contact are in closed contact, the total current-carrying area of the contacts is ensured after the contacts are adjacently separated by the contact sleeve structure 4, so that the current-carrying capacity of the moving contact component is improved, the temperature rise and the contact resistance of the contacts are reduced, the service performance of a product is improved, and the maximum rated current of the low-voltage circuit breaker is increased.

As a preferred embodiment, when the contact sleeve structure 5 is connected with the first contacts, the driving member may only penetrate between one of the first contacts 2 and the contact sleeve structure 4, or the driving member 5 may penetrate through the second contact 3 and the contact sleeve structure 4 to connect two of the first contacts 2, the second contact 3 is correspondingly provided with a kidney-shaped hole 31 through which the driving member 5 can rotate, two of the first contacts 2 are relatively provided with two connecting holes which are installed in cooperation with the driving member 5, a movable gap 40 is relatively formed between the top of the second contact 3 and the contact sleeve structure 4, so that the two of the first contacts 2 drive the contact sleeve structure 4 to rotate synchronously through the driving member 5, the transmission stress is stable, and the driving member 5 moves in the kidney-shaped hole 31 in the process that the contact sleeve structure 4 rotates along with the first contact 2, this design avoids any interference in the movement between the driver 5 and the second contact 3, thus ensuring the independence of the movement of the second contact 3 with respect to the two first contacts 2.

As shown in fig. 1 to 5, the moving contact assembly preferably includes three moving contacts, that is, two first contacts 2 and one second contact 3, or includes more than three moving contacts, so that the number of the moving contacts is increased to improve the current-carrying capacity of the moving contact assembly, and more than three moving contacts can be selectively provided with two contact sleeve structures; the specific structure of the contact sleeve structure 4 is described in detail below with reference to fig. 2-5: the contact casing structure 4 has a receiving section 43 adapted to receive the second contact 3, and a U-shaped projection 42 formed at the top of the receiving section 43 and spanning over the top of the second contact 3, the movable gap 40 is formed between the U-shaped protrusion 42 and the top of the second contact 3, and the contact sleeve structure 4 does not block the independent movement of the second contact 3 by using the movable gap 40, so that the second contact 3 can rotate towards the movable gap 40, and further preferably, the contact sleeve structure 4 comprises at least two side plate surfaces 41 connected to both sides of the second contact 3, and the U-shaped bulges 42 are integrally connected between the tops of the two side plate surfaces 41, and the two side plate surfaces 41 are oppositely provided with a first through hole 44 for connecting the first rotating shaft 6 and a second through hole 45 for connecting the driving piece 5. According to the structure, the two side plate surfaces 41 and the U-shaped protrusions 42 of the contact sleeve structure 4 are designed into an integral structure, the U-shaped protrusions 42 cross over the top of the second contact 3, so that the movable gap 40 for the rotation of the second contact 3 is formed between the U-shaped protrusions 42 and the second contact 3, the contact sleeve structure 4 designed in this way is surrounded on two sides of the second contact 3 to adjacently separate a plurality of contacts and form a certain distance, and the independent rotation of pressing the second contact 3 is not limited, the design is reasonable, the matching is reliable, when in installation, the contact sleeve structure 4 is coaxially and rotatably connected with the first contact 2 and the second contact 3 through a first rotating shaft, then the driving piece 5 penetrates through the contact sleeve structure 4 and is connected into the connecting hole of the first contact 2, so that the installation process of the contact sleeve structure 4 is realized, the installation structure is simple, the assembly is also more convenient, and the assembly efficiency is improved.

The specific arrangement of the moving contact assembly and the contact spring assembly is described in detail below with reference to fig. 1-4: one ends of the two first contacts 2 and the two second contacts 3 are rotatably arranged in the mounting cavity 11 of the rotating shaft structure 1 through a first rotating shaft 6, the contact spring assembly 8 comprises two first springs 81 arranged between one end of two first contacts 2 and the shaft structure 1, and a second spring 82 disposed between one end of the second contact 3 and the rotary shaft structure 1, two of the first contacts 2 are restricted to one end of two of the first springs 81 by a first positioning structure, the second contact 3 is restricted to one end of the second spring 82 by a second positioning structure, the other ends of the two first springs 81 and the second spring 82 are positioned in a plurality of positioning grooves 13 formed in the mounting chamber 11, thereby, the two first springs 81 and the two second springs 82 are positioned and installed, and the second contact 3 designed in this way can independently rotate around the shaft relative to the two second contacts 3 under the action of the second springs 82.

As shown in fig. 2 and 4, the second positioning structure includes a positioning boss 32 integrally formed on a bottom projection of one end of the second contact 3, and one end of the second spring 82 is sleeved on the positioning boss 32; in addition, the first positioning structure comprises a pressing plate structure which is rotatably arranged in the installation cavity 11 and is matched and abutted against one end of each of the two first springs 81, and a positioning rotating shaft which is respectively arranged on the side surface, back to the second contact 3, of each of the two first contacts in a penetrating manner and is abutted against the pressing plate structure, and two positioning columns which are connected with one ends of the two first springs 81 in a positioning manner are arranged on the pressing plate structure 9. With the above structure, two first contacts 2 are limited at one end of two first springs 81 by the abutting fit of the pressing plate structure 9 and the positioning column, the second contact 3 is limited at one end of the second spring 82 by the positioning boss 32 formed thereon, and the other ends of the first spring 81 and the second spring 82 are positioned and connected in the positioning groove 13 of the rotating shaft structure 1, so that the positioning installation of the first spring 81 and the second spring 82 between the first contact 2 and the second contact 3, respectively, and the rotating shaft structure 1 is realized, thereby providing contact pressure for the two first contacts 2 and the two second contacts 3, according to the positioning boss 32 integrally formed on the second contact 3, the integral structure has good stability, the molding manufacturing is convenient, the positioning installation of the second spring 82 is convenient, and the pressing plate structure is rotationally pressed against the first spring 81, and the rotation angle can be adjusted correspondingly with the rotation force of the first contact 2, the contact spring has the advantages that the degree of freedom is well adjusted, the installation stress is more stable, the contact spring is simple in installation structure, compared with the installation mode of multiple groups of rivets in the prior art, the number of parts needed for installation is small, the structure is more compact, the assembly process is simplified, the installation is more convenient and easier, the installation efficiency is improved, and the production cost is reduced.

When the driving member 5 and the positioning rotating shaft are designed in the same structure, refer to fig. 6-7, the positioning rotating shaft integrally penetrates the waist-shaped hole 31 of the second contact 3 to connect two first contacts 2, and the two ends of the positioning rotating shaft respectively penetrate the side faces of the two first contacts 2 and abut against the pressing plate structure 9, wherein the pressing plate structure 9 is designed to integrally press two first springs simultaneously, specifically, the pressing plate structure 9 is rotatably arranged in the installation cavity 11 through the second rotating shaft 7, the pressing plate structure 9 comprises a yielding notch for allowing one end of each of the first contacts 2 and the second contacts 3 to penetrate, and two positioning plate parts 91 formed on the two sides of the yielding notch and matched with the positioning rotating shaft and two lug parts 92 arranged at the two ends of the pressing plate structure 9, the second rotating shaft 7 penetrates the two lug parts 92 to be rotatably connected to the side walls on the two sides of the installation cavity 11, therefore, the pressure plate structure 9 is arranged in the installation cavity 11 in a rotating mode, the two first contacts 2 are designed to drive the contact sleeve structure 4 to form synchronous rotating fit, and the motion independence of the second contacts 3 can still be guaranteed due to the fact that the two positioning rotating shafts are movably arranged in the waist-shaped holes in a penetrating mode. Due to the fact that the driving piece 5 and the positioning rotating shaft are in a shared structural design, the contact pressure effect from the first spring 81 can be transmitted between the first contact 2 and the first spring 81, the first spring 81 can be positioned and installed through the cooperation of the pressing plate structure and the positioning rotating shaft, the connection effect can be achieved between the first contact 2 and the contact sleeve structure 4, the first contact 2 is driven to move synchronously with the contact sleeve structure 4 when rotating, the reasonable optimization design of a product structure and matched parts is achieved, installation parts are reduced, assembly is convenient, the structure is more compact, and production cost is reduced.

As a deformable embodiment of the positioning rotating shaft and the driving member, although the positioning rotating shaft may be inserted between the two first contacts 2 and the second contact 3 as an integral design, the positioning rotating shaft may also be a split design, as shown in fig. 8 to 9, the positioning rotating shaft is split and is provided with two corresponding positioning rotating shafts on the two first contacts 2 along the axial direction, one end of each of the two positioning rotating shafts is fixed on each of the two first contacts and is located opposite to each of the two second contacts 3, the other end of each of the two positioning rotating shafts extends out of the side surfaces of each of the two first contacts 2, and when the driving member is one of the positioning rotating shafts, the positioning rotating shaft is connected to the contact sleeve structure 4 through one of the first contacts 2. And, the pressing plate structure 9 is required to be designed as a split type correspondingly, the pressing plate structure 9 includes two small pressing plates 90 respectively connected with the two first springs 81, the two small pressing plates 90 form a coaxial rotation fit through the second rotating shaft 7, and the other ends of the two positioning rotating shafts are respectively abutted against the two small pressing plates 90, so that the contact pressure is respectively transmitted between the two first contacts 2 and the two first springs 81, and the design makes one of the first contacts 2 drive the contact sleeve structure 4 to rotate, thereby ensuring that the two first contacts 2 and the second contact 3 can realize independent movement.

The design of the scheme has the advantages that the positioning rotating shaft can be designed as an integral structure or a split structure between the two second contacts 3, the integral positioning rotating shaft passes through the kidney-shaped hole 31 of the second contact 3 to connect the two first contacts 2 together, then the two ends of the positioning rotating shaft extend out of the side surfaces of the two first contacts 2 and abut against the pressure plate structure 9, so that the stress of the two first contacts 2 is balanced, the single contact is prevented from bearing double contact pressure, the motion independence of the second contacts 3 between the two first contacts 2 is ensured, in addition, the split positioning rotating shaft respectively passes through the two second contacts 3 and does not pass through the second contacts 3, so that the stress action and the mutual noninterference between the two first contacts 2 and the two first springs 81 are realized, the motion independence of the second contacts 3 is not influenced, and the design is reasonable, the matching is reliable. A person skilled in the art can select the setting mode of the positioning rotating shaft according to the above description, and details of other equivalent embodiments are not described herein.

In this embodiment, although the preferred way of fixedly connecting the contact sleeve structure with the first contact is given in the above embodiment, and the positioning rotating shaft thus designed can be used as a driving member together, as an alternative way of the above embodiment, the contact sleeve structure can also be selectively fixedly connected with the second contact to form a linkage fit, referring to fig. 10, a in fig. 10 indicates the positioning rotating shaft, the second contact 3 is provided with a fixing hole for fastening the driving member 5, the driving member 5 is fixedly connected with the second contact 3 through the fixing hole, so that the second contact 3 is designed to move relative to the two first contacts 2 to drive the contact sleeve structure 5 to move synchronously, and the movement of the two first contacts does not affect the second contact and the contact sleeve structure, and the movement independence of the second contact relative to the first contacts can be realized, the driving piece and the positioning rotating shaft which are designed in the way are not shared, correspondingly, the positioning rotating shaft is fixedly provided with two split first contacts, the two positioning rotating shafts do not penetrate through the contact sleeve structure and the second contact any more, the pressing plate structure 9 is composed of two small pressing plates 90 connected with two first springs, the two positioning rotating shafts extend out of the two sides of the first contacts and are abutted to the two small pressing plates respectively, so that the two first contacts 2 and the two first springs 81 play a role of transmitting contact pressure respectively, the second spring is still connected to the positioning boss at the top of the second contact, and therefore a plurality of moving contacts are sequentially separated through the contact sleeve structure, the through-current capacity of the moving contact component is improved, and the motion independence among the moving contacts is realized. A person skilled in the art can select a specific arrangement manner of the contact sleeve structure according to the above description, and a detailed description of other equivalent embodiments is omitted here.

Combine fig. 1 and fig. 6 to show, the both ends of first pivot 6 are connected respectively through axle sleeve 61 in two rotation grooves 12 of 11 both sides lateral walls of installation cavity, it is used for the restriction to fix on the first pivot 6 the axle sleeve 61 is deviate from two spacing jump rings 62 of rotation groove 12, still be provided with the pivot support 10 that is located two first contact 2 both sides on the first pivot 6, be provided with on the first pivot 6 and be used for fixing spacing jump ring 62's ring groove plays the axial limiting displacement to two axle sleeves 61 in ring groove through spacing jump ring 62 card support to prevent that two axle sleeves 61 from deviating from two rotation grooves 12, thereby guarantee the installation reliability between first pivot 6 and the pivot structure 1, structural stability is good.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a many contacts independent motion structure, includes pivot structure (1), and rotates side by side through first pivot (6) and set up the moving contact subassembly on pivot structure (1), and set up in the moving contact subassembly with contact spring assembly (8) between pivot structure (1), its characterized in that: the moving contact component comprises two first contacts (2) arranged on the outermost side, at least one second contact (3) arranged between the two first contacts (2), and a contact sleeve structure (4) rotatably arranged between the two first contacts (2) and the second contact (3) through a first rotating shaft (6), the two first contacts (2) and the second contact (3) surround the first rotating shaft (6) and can be relatively rotatably arranged, the contact sleeve structure (4) can movably surround the second contact (3) and enables the two first contacts (2) and the second contact (3) to be adjacent and separated, and a driving piece (5) used for driving the contact sleeve structure (4) to rotate penetrates through at least one of the first contacts (2) or the second contact and the contact sleeve structure (4).

2. A multiple contact independent movement structure as claimed in claim 1, wherein: drive piece (5) pass second contact and contact cover structural connection two first contact (2), it can supply to correspond to be provided with on second contact (3) drive piece (5) rotate waist shape hole (31) that pass through, two be provided with relatively on first contact (2) with two connecting holes of drive piece (5) cooperation installation, second contact top with be formed with activity space (40) between contact cover structural connection (4).

3. A multiple contact independent movement structure as claimed in claim 1, wherein: the second contact (3) is provided with a fixing hole for fastening and connecting the driving piece (5), and the driving piece (5) penetrates through the fixing hole and is fixedly connected with the second contact (3).

4. A multiple contact independent movement structure as claimed in claim 2, wherein: the contact sleeve structure (4) is provided with a containing interval (43) suitable for containing the second contact (3), and a U-shaped bulge (42) formed at the top of the containing interval (43) and spanning over the top of the second contact (3), wherein the movable gap (40) is formed between the U-shaped bulge (42) and the top of the second contact (3).

5. The multiple-contact independent movement structure of claim 4, wherein: contact cover structure (4) are including connecting two at least curb plate face (41) of second contact (3) both sides to and integral connection between two curb plate face (41) tops U-shaped protruding (42), two curb plate face (41) are relative be provided with and are used for connecting first through-hole (44) of first pivot (6), and are used for connecting the second through-hole of driving piece (5).

6. A multiple contact independent movement structure as claimed in any one of claims 1 to 5, wherein: one ends of the two first contacts (2) and the two second contacts (3) are rotatably arranged in a mounting cavity (11) of the rotating shaft structure through a first rotating shaft (6), the contact spring assembly (8) comprises two first springs (81) arranged between one ends of the two first contacts (2) and the rotating shaft structure (1) and a second spring (82) arranged between one end of the second contact (3) and the rotating shaft structure (1), the two first contacts (2) are limited at one ends of the two first springs (81) through first positioning structures, the second contact (3) is limited at one end of the second spring (82) through second positioning structures, and the other ends of the two first springs (81) and the second spring (82) are positioned in a plurality of positioning grooves (13) formed in the mounting cavity (11).

7. The multiple-contact independent movement structure of claim 6, wherein: the second positioning structure comprises: the positioning boss (32) is integrally formed on the protrusion at the bottom of one end of the second contact (3), and one end of the second spring (82) is sleeved on the positioning boss (32).

8. The multiple-contact independent movement structure of claim 7, wherein: the first positioning structure comprises: the rotating device comprises a pressing plate structure which is rotatably arranged in the installation cavity (11) and is matched and abutted with one end of each of two first springs (81), and positioning rotating shafts which are respectively arranged on the side surfaces, back to the second contact (3), of the two first contacts in a penetrating mode and are abutted to the pressing plate structure, wherein two positioning columns which are connected with one ends of the two first springs (81) in a positioning mode are arranged on the pressing plate structure (9).

9. A multiple contact independent movement structure as claimed in claim 8, wherein: the positioning rotating shaft integrally penetrates through a waist-shaped hole (31) of the second contact (3) to connect the two first contacts (2), two ends of the positioning rotating shaft respectively penetrate through the side faces of the two first contacts (2), and the driving piece and the positioning rotating shaft can be arranged in the same structure.

10. A multiple contact independent movement structure as claimed in claim 8, wherein: two positioning rotating shafts are arranged on the two first contacts (2) in a split manner in an axial direction, one ends of the two positioning rotating shafts penetrate through the two first contacts respectively and are located on two sides of the second contact (3) relatively, and the other ends of the two positioning rotating shafts extend out of the side faces of the two first contacts (2) respectively; when the driving piece is the positioning rotating shaft of one of the driving pieces, the positioning rotating shaft penetrates through the first contact (2) of the driving piece to be connected with the contact sleeve structure (4).

11. A multiple contact independent movement structure as claimed in claim 9 or 10, wherein: the clamp plate structure (9) rotates through second pivot (7) and sets up in installation cavity (11), clamp plate structure (9) including the notch of stepping down that can supply the one end of first contact (2) and second contact (3) to pass, with the shaping be in step down notch both sides and with two location plate portions (91) of location pivot complex, and set up two lug portion (92) at clamp plate structure (9) both ends, second pivot (7) pass two lug portion (92) and rotate to be connected on the both sides lateral wall of installation cavity (11).

12. A multiple contact independent movement structure as claimed in claim 11, wherein: the pressing plate structure (9) comprises two small pressing plates (90) which are respectively connected with the two first springs (81), and the two small pressing plates (90) form coaxial rotation fit through a second rotating shaft (7).

13. A multiple contact independent movement structure as claimed in any one of claims 1 to 12, wherein: the both ends of first pivot (6) are passed through axle sleeve (61) and are connected respectively in two rotation grooves (12) of installation cavity (11) both sides lateral wall, it is used for the restriction to fix on first pivot (6) axle sleeve (61) are deviate from rotate two spacing jump rings (62) of groove (12), still be provided with pivot support (10) that are located two first contacts (2) both sides on first pivot (6).