CN114420514B

CN114420514B - Multi-contact independent movement structure

Info

Publication number: CN114420514B
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: 2024-03-29
Anticipated expiration: 2042-01-27
Also published as: CN114420514A

Abstract

The invention discloses a multi-contact independent motion structure, which comprises two first contacts and at least one second contact, wherein the two first contacts and the at least one second contact are arranged on a rotating shaft structure through a first rotating shaft, a contact sleeve structure is arranged between the two first contacts and the second contacts through the first rotating shaft, the contact sleeve structure is movably sleeved and surrounds the second contacts and separates the two first contacts from the second contacts adjacently, and a driving piece for driving the contact sleeve structure to rotate is arranged between at least one first contact or the second contact and the contact sleeve structure.

Description

Multi-contact independent movement 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 a power distribution circuit and various protection circuits of electric equipment, can be used for switching on, carrying and breaking current under the normal circuit condition, and can also be used for avoiding the damage of the electric equipment caused by overload and short-circuit faults. The contact system is used as an important component of the low-voltage circuit breaker, the performance parameters and the operation performance of the contact system directly influence various technical indexes of the circuit breaker, particularly the initial pressure and the final pressure of the contact of the high-current low-voltage circuit breaker can influence the temperature rise, the service life and the breaking capacity of a product.

The current-carrying capacity of the contact is limited by the fact that the contact system is limited by structural form and space, the maximum rated current of the existing plastic-shell low-voltage circuit breaker is usually only in the form of a single-chip contact or a double-chip contact, the current-carrying capacity of the contact is limited by simply making the contact volume large according to the current passing through the surface of the contact, and the maximum rated current of the low-voltage circuit breaker is difficult to be made larger due to the fact that the current-carrying capacity of the contact is limited by the fact that the contact is large in contact resistance and high in temperature rise.

For this reason, chinese patent document CN111769015a discloses a multi-piece moving contact of a molded case circuit breaker, which comprises a bracket and a contact frame movably mounted on the bracket through a rotating shaft, wherein a plurality of contact fingers are mounted on the rotating shaft in parallel, each contact finger can rotate independently around the rotating shaft, a partition plate is mounted between two adjacent contact fingers, a contact rod is arranged at the bottom end of each contact finger, a first rivet and a second rivet are mounted on each contact rod, an upper contact spring and a lower contact spring are respectively accommodated on the contact frame through spring grooves, and the ends of the upper contact spring and the lower contact spring are respectively sleeved on the first rivet and the second rivet; the partition plate is arranged between two contact fingers through a first cylinder and a second cylinder, and the first cylinder and the second cylinder are respectively arranged in corresponding holes of two adjacent contact fingers.

From the structure of the multi-piece type moving contact of the plastic shell circuit breaker, the following problems still exist: 1. the baffle is arranged in the holes of two adjacent contact fingers through the two cylinders, the movable clearance between the cylinders and the holes is small, the requirement on the installation process is high, the contact fingers at the two sides can drive the contact fingers at the middle part to act together through the baffle easily, the movement independence of the contact fingers at the middle part can not be really realized, and the service performance of products 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 in a positioning way through the first rivets and the second rivets, 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 invention aims to solve the technical problems that the baffle plate in the prior art is arranged between two adjacent contact fingers through two cylinders, the requirement on the installation process is very high, the contact fingers at two sides can drive the contact fingers at the middle part to act together through the baffle plate easily, and the movement independence of the contact fingers at the middle part cannot be really realized, so that the service performance of a product is influenced.

In order to solve the technical problems, the invention provides a multi-contact independent movement structure, which comprises a rotating shaft structure, a moving contact assembly and a contact spring assembly, wherein the moving contact assembly is arranged on the rotating shaft structure through parallel rotation of a first rotating shaft, the contact spring assembly is arranged between the moving contact assembly and the rotating shaft structure, the moving contact assembly comprises two first contacts arranged at the outermost side, at least one second contact arranged between the two first contacts, and a contact sleeve structure which is arranged between the two first contacts and the second contacts through rotation of the first rotating shaft, the two first contacts and the second contacts are arranged in a relatively rotatable mode around the first rotating shaft, the contact sleeve structure is movably sleeved around the second contacts and separates the two first contacts from the second contacts adjacently, a movable gap is formed between the top of the second contacts and the contact sleeve structure relatively, and a driving piece for driving the contact sleeve structure to rotate is arranged between at least one first contact or the second contact and the contact sleeve structure in a penetrating mode.

In the multi-contact independent movement structure, the driving piece penetrates through the second contact and the contact sleeve structure to be connected with the two first contacts, kidney-shaped holes through which the driving piece can rotate are correspondingly formed in the second contact, two connecting holes matched with the driving piece are oppositely formed in the two first contacts, and movable gaps are oppositely formed between the top of the second contact and the contact sleeve structure.

In the multi-contact independent movement structure, the second contact is provided with a fixing hole for fastening and connecting the driving piece, and the driving piece is arranged in the fixing hole in a penetrating manner and fixedly connected with the second contact.

In the above-mentioned multi-contact independent movement structure, the contact sleeve structure has at least one accommodation section suitable for accommodating at least one second contact, and a U-shaped protrusion formed on the top of the accommodation section and spanning over the top of the second contact, and the movable gap is formed between the U-shaped protrusion and the top of the second contact.

In the above-mentioned independent motion structure of many contacts, the contact sleeve structure is including connecting two at least curb plates face of second contact both sides, and an organic whole is connected between two curb plate face tops the U-shaped arch, two the curb plate face is relative be provided with be used for connecting the first through-hole of first pivot, and be used for connecting the second through-hole of driving piece.

In the multi-contact independent movement structure, one ends of the two first contacts and the second contacts are rotatably arranged in the installation cavity of the rotating shaft structure through the first rotating shaft, the contact spring assembly comprises two first springs arranged between one ends of the two first contacts and the rotating shaft structure, and a second spring arranged between one ends of the second contacts and the rotating shaft structure, the two first contacts are limited to one ends of the two first springs through the first positioning structure, the second contacts are limited to one ends of the second springs through the second positioning structure, and the other ends of the two first springs and the second springs are positioned in a plurality of positioning grooves formed in the installation cavity.

In the multi-contact independent movement structure, the positioning boss is integrally formed on the boss 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 multi-contact independent movement structure, the first positioning structure includes: the device comprises a mounting cavity, a pressing plate structure and positioning rotating shafts, wherein the pressing plate structure is rotatably arranged in the mounting cavity and matched with and propped against one ends of two first springs, the positioning rotating shafts are respectively arranged on the side faces of the two first contacts, which face away from the second contacts, and are propped against the pressing plate structure, and the pressing plate structure is provided with two positioning columns for positioning and connecting one ends of the two first springs.

In the above-mentioned multi-contact independent movement structure, the driving member is the positioning rotating shaft, the positioning rotating shaft integrally passes through the kidney-shaped hole of the second contact to connect the two first contacts, and two ends of the positioning rotating shaft respectively pass through the side surfaces of the two first contacts.

In the above-mentioned independent motion structure of multiple contacts, the location pivot is split structure and wears to be equipped with two on two first contacts along same axial, two the one end of location pivot is relative be located the both sides of second contact, and the other end of two location pivots stretches out respectively two the side of first contact, at least one location pivot pass first contact with contact cover structure links to each other.

In the above-mentioned multi-contact independent motion structure, the clamp plate structure rotates through the second pivot and sets up in the installation cavity, the clamp plate structure is including the notch of stepping down that can supply one end of first contact and second contact to pass, and the shaping is in step down notch both sides and with two locating plate portions of location pivot complex, and set up two lug portions at clamp plate structure both ends, the second pivot passes two lug portions and rotates to connect on the both sides lateral wall of installation cavity.

In the multi-contact independent movement structure, the pressing plate structure comprises two small pressing plates respectively connected with the two first springs, and the two small pressing plates form coaxial running fit through the second rotating shaft.

In the multi-contact independent movement structure, two ends of the first rotating shaft are respectively connected into two rotating grooves on two side walls of the mounting cavity through shaft sleeves, two limiting snap springs used for limiting the shaft sleeves to deviate from the rotating grooves are fixedly arranged on the first rotating shaft, and rotating shaft supports located on 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. according to the multi-contact independent motion structure provided by the invention, the contact sleeve structure sleeved and surrounding the second contact is rotationally arranged between the two first contacts, and according to the contact sleeve structure which is formed by connecting at least one first contact or one second contact with the contact sleeve structure through the driving piece, namely the contact sleeve structure rotates relative to the second contact under the driving of the first contact or the contact sleeve structure rotates relative to the two first contacts under the driving of the second contact, so that the second contact and the two first contacts can relatively rotate around the shaft by virtue of the design, the motion independence of the second contact is truly realized, the volume design of the contact sleeve structure is smaller, the installation is simpler, the installation gap between the contacts can be reduced by virtue of the contact sleeve structure, the verticality of the contacts can be kept to the greatest extent, the phenomenon of lateral deflection can not occur, and the motion independence between the contacts is not influenced, and the two first contacts and the at least one second contact can relatively rotate to a certain degree when the moving contact assembly and the fixed contact are in closed contact.

2. In the multi-contact independent movement structure provided by the invention, the driving piece can be arranged between one of the first contacts and the contact sleeve structure in a penetrating way, and can also be arranged between the two first contacts and the contact sleeve structure in a penetrating way, so that the two first contacts drive the contact sleeve structure to synchronously rotate through the driving piece, the transmission stress is stable, and the driving piece is required to pass through the second contact.

3. In the multi-contact independent movement structure provided by the invention, the two side plate surfaces and the U-shaped bulge of the contact sleeve structure are integrally designed, and the U-shaped bulge is spanned above the top of the second contact, so that a movable gap for the rotation of the second contact is formed between the U-shaped bulge and the second contact.

4. In the multi-contact independent motion structure provided by the invention, the contact spring assembly comprises two first springs connected with two first contacts and a second spring connected with the second contacts, wherein the first contacts are limited on one end of the two first springs through the abutting and matching of the pressing plate structure and the positioning column, the second contacts are limited on one end of the second springs through positioning bosses formed on the second contacts, and the other ends of the first springs and the second springs are positioned and connected in positioning grooves of the rotating shaft structure, so that the positioning installation of the first springs and the second springs between the first contacts and the second contacts and the rotating shaft structure is realized, contact pressure is provided for the two first contacts and the second contacts, and the positioning springs are integrally formed on the second contacts according to the positioning bosses.

5. In the multi-contact independent movement structure provided by the invention, the driving piece is the positioning rotating shaft, the positioning rotating shafts are respectively arranged on the side surfaces of the two first contacts, which are opposite to the second contacts, in a penetrating way and are abutted to the pressing plate structure, and the design has the advantages that as the driving piece and the positioning rotating shafts are of a shared structure design, the driving piece can be used for transmitting the contact pressure action from the first springs between the first contacts and the first springs, and plays a positioning installation role on the first springs through the matching of the pressing plate structure and the positioning rotating shaft, and can play a connecting role between the first contacts and the contact sleeve structure, the synchronous movement of the contact sleeve structure is driven when the first contacts rotate, the reasonable and optimal design of the product structure and the matched parts is realized, the installation of parts is reduced, the assembly is more convenient, the structure is more compact, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

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

FIG. 2 is a schematic cross-sectional view of a multi-contact independent motion 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 a moving contact assembly and a contact spring assembly according to the present invention;

FIG. 5 is a schematic view of a contact cover structure according to the present invention;

FIG. 6 is a schematic diagram of a connection structure between a movable contact assembly and an integrated platen structure according to the present invention;

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

FIG. 8 is a schematic diagram of a connection structure of a movable contact assembly and a split pressing plate structure according to the present invention;

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

FIG. 10 is a schematic view of a contact shell structure and a second contact mounting structure according to the present invention;

reference numerals illustrate: 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. waist-shaped holes; 32. positioning the boss; 4. a contact sleeve structure; 40. a movable gap; 41. a side plate surface; 42. a U-shaped protrusion; 43. a housing section; 44. a first through hole; 5. a driving member; 6. a first rotating shaft; 61. a shaft sleeve; 62. limiting snap springs; 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 part.

Detailed Description

The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the 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 explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

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

the embodiment provides a multi-contact independent motion structure as shown in fig. 1-10, which is used on a molded case circuit breaker, and comprises a rotating shaft structure 1, and a moving contact assembly arranged on the rotating shaft structure 1 through a first rotating shaft 6 in a side-by-side rotating manner, and a contact spring assembly 8 arranged between the moving contact assembly and the rotating shaft structure 1, wherein the moving contact assembly comprises two first contacts 2 arranged at 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 contacts 3 through the rotation of the first rotating shaft 6, the two first contacts 2 and the second contacts 3 are arranged around the first rotating shaft 6 in a relatively rotatable manner, the contact sleeve structure 4 is movably sleeved around the second contacts 3 and separates the two first contacts 2 from the second contacts 3, and at least one contact sleeve structure 4 or the first contact 2 or the second contact sleeve structure 4 is provided with a driving member for driving the contact sleeve structure 4, namely, the driving member is matched with one contact sleeve structure 4 through the driving member.

In the above embodiment, according to at least one first contact 2 or second contact connected to the contact sleeve structure 4 by the driving member 5, namely, 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 relatively around the shaft, thus truly realizing the motion independence of the second contact 3, and the volume design of the contact sleeve structure 4 is smaller, the installation is simpler, the installation gap between the plurality of contacts can be reduced through the contact sleeve structure 4, so that the plurality of contacts can be kept vertical to the greatest extent without occurrence of side deflection phenomenon, and meanwhile, the motion independence between the plurality of contacts is not influenced, and the two first contacts 2 and the at least one second contact 3 can rotate relatively to a certain over-travel when the moving contact assembly and the fixed contact are in closed contact.

As a preferred embodiment, when the contact sleeve structure 5 is connected with the first contacts, the driving member may be only arranged between one of the first contacts 2 and the contact sleeve structure 4 in a penetrating manner, or the driving member 5 may be connected with the two first contacts 2 through the second contact 3 and the contact sleeve structure 4, the second contact 3 is correspondingly provided with a kidney-shaped hole 31 through which the driving member 5 rotates, the two first contacts 2 are oppositely provided with two connecting holes which are installed in a matched manner with the driving member 5, and a movable gap 40 is formed between the top of the second contact 3 and the contact sleeve structure 4 relatively, so that the two 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 follows the rotation of the first contacts 2, so that the movement between the driving member 5 and the second contact 3 is avoided, and the movement independence of the second contact 3 relative to the two first contacts 2 is ensured.

Referring to fig. 1-5, the moving contact assembly is preferably composed of three moving contacts, namely two first contacts 2 and one second contact 3, or 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 the three or 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 in connection with fig. 2-5: the contact sleeve structure 4 is provided with a containing section 43 suitable for containing the second contact 3, and a U-shaped bulge 42 formed at the top of the containing section 43 and crossing over the top of the second contact 3, the movable gap 40 is formed between the U-shaped bulge 42 and the top of the second contact 3, the contact sleeve structure 4 can 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 one side of the movable gap 40, and further preferably, the contact sleeve structure 4 comprises at least two side plate surfaces 41 connected at two sides of the second contact 3, and the U-shaped bulge 42 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 all of an integrated structure design, the U-shaped protrusions 42 transversely span the top of the second contact 3, a 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 designed contact sleeve structure 4 surrounds two sides of the second contact 3 to be used for adjacently separating a plurality of contacts and forming a certain distance, independent rotation for pressing the second contact 3 is not limited, the design is reasonable, the matching is reliable, during installation, the contact sleeve structure 4 is coaxially connected with the first contact 2 and the second contact 3 through a first rotating shaft, then a driving piece 5 penetrates through the contact sleeve structure 4 and is connected into a connecting hole of the first contact 2, the installation process of the contact sleeve structure 4 is realized, the installation structure is simple, the assembly is convenient, and the assembly efficiency is improved.

The specific arrangement of the movable 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 second contacts 3 are rotatably arranged in the installation cavity 11 of the rotating shaft structure 1 through the 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 ends of the second contacts 3 and the rotating shaft structure 1, the two first contacts 2 are limited at one ends of the two first springs 81 through a first positioning structure, the second contacts 3 are limited at one ends of the second springs 82 through a second positioning structure, and the other ends of the two first springs 81 and the second springs 82 are positioned in a plurality of positioning grooves 13 formed in the installation cavity 11, so that positioning installation effects are achieved on the two first springs 81 and the second springs 82, and the second contacts 3 which are designed in such a way can rotate around shafts independently relative to the two second contacts 3 under the effect of the second springs 82.

As shown in fig. 2 and fig. 4, the second positioning structure includes a positioning boss 32 integrally formed on a boss at a bottom 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 mounting cavity 11 and matched and abutted against one ends of the two first springs 81, and a positioning rotating shaft which is respectively arranged on the side surface of the two first contacts 2, which is opposite to the second contacts 3, in a penetrating manner and abutted against the pressing plate structure, and the pressing plate structure 9 is provided with two positioning columns which are positioned and connected with one ends of the two first springs 81. According to the structure, the two first contacts 2 are limited on one end of the two first springs 81 through the abutting and matching of the pressing plate structure 9 and the positioning column, the second contacts 3 are limited on one end of the second springs 82 through the positioning boss 32 formed on the second contacts, the other ends of the first springs 81 and the second springs 82 are positioned and connected in the positioning groove 13 of the rotating shaft structure 1, positioning installation of the first springs 81 and the second springs 82 between the first contacts 2 and the second contacts 3 and the rotating shaft structure 1 is achieved, contact pressure is provided for the two first contacts 2 and the second contacts 3, the positioning boss 32 is integrally formed on the second contacts 3, the integrated structure is good in stability, the forming and manufacturing are convenient, the positioning installation of the second springs 82 is convenient, the pressing plate structure is rotationally pressed on the first springs 81, the rotation angle can be correspondingly adjusted along with the rotation stress of the first contacts 2, the installation stress is more stable, compared with the prior art, the rivet mounting structure is compact, the mounting structure is required, the mounting process is simplified, the rivet mounting structure is compact, the mounting process is easy, and the mounting cost is reduced.

When the driving member 5 and the positioning rotating shaft are designed to be the same structure, referring to fig. 6-7, the positioning rotating shaft integrally passes through the kidney-shaped hole 31 of the second contact 3 to connect the two first contacts 2, two ends of the positioning rotating shaft respectively pass through the side surfaces of the two first contacts 2 and are abutted to the pressing plate structure 9, wherein the pressing plate structure 9 is designed to integrally press the two first springs at the same time, specifically, the pressing plate structure 9 is rotatably arranged in the mounting cavity 11 through the second rotating shaft 7, the pressing plate structure 9 comprises a yielding notch through which one ends of the first contacts 2 and the second contacts 3 can pass, two positioning plate parts 91 formed at two sides of the yielding notch and matched with the positioning rotating shaft, and two lug parts 92 arranged at two ends of the pressing plate structure 9, and the second rotating shaft 7 passes through the two lug parts 92 to be rotatably connected to two side walls of the mounting cavity 11, so that the pressing plate structure 9 is rotatably arranged in the mounting cavity 11, and the two first contacts 2 are driven by the pressing plate structure 9 to be rotatably arranged in the mounting cavity 11, and the two first contacts 4 are synchronously matched with the waist-shaped rotating shaft 3, and the movement of the two contacts can still independently move in the positioning rotating shaft is ensured. The structure is provided, because the driving piece 5 and the positioning rotating shaft are of a shared structural design, the structure can be used for transmitting the contact pressure action from the first spring 81 between the first contact 2 and the first spring 81, and plays a positioning and mounting role on the first spring 81 through the cooperation of the pressing plate structure and the positioning rotating shaft, and can play a connecting role between the first contact 2 and the contact sleeve structure 4, so that the synchronous movement of the contact sleeve structure 4 is driven when the first contact 2 rotates, the reasonable optimization design of a product structure and matched parts is realized, the installation of parts is reduced, the assembly is also more convenient, the structure is more compact, and the production cost is reduced.

As a deformable implementation manner of the positioning rotating shaft and the driving member, although the positioning rotating shaft may be integrally designed and connected between the two first contacts 2 and the second contact 3, the positioning rotating shaft may also be separately designed, as shown in fig. 8-9, two positioning rotating shafts are correspondingly arranged on the two first contacts 2 along the axial direction in a split manner, one ends of the two positioning rotating shafts are respectively fixed on the two first contacts and are oppositely positioned at two sides of the second contact 3, the other ends of the two positioning rotating shafts respectively extend out of the sides of the two first contacts 2, and when the driving member is one of the positioning rotating shafts, the positioning rotating shaft penetrates through one of the first contacts 2 to be connected with the contact sleeve structure 4. Moreover, the pressing plate structure 9 needs to be correspondingly designed as a split type, the pressing plate structure 9 comprises two small pressing plates 90 respectively connected with two first springs 81, the two small pressing plates 90 form coaxial rotation fit through the second rotating shaft 7, the other ends of the two positioning rotating shafts are respectively abutted to the two small pressing plates 90, and accordingly the effect of contact pressure is respectively transmitted between the two first contacts 2 and the two first springs 81, so that one of the first contacts 2 drives the contact sleeve structure 4 to rotate, and independent movement of the two first contacts 2 and the two second contacts 3 is guaranteed.

The positioning rotating shaft has the advantages that the positioning rotating shaft can be designed to be an integral structure or a split structure between the two second contacts 3, the integral positioning rotating shaft is used for connecting the two first contacts 2 together through the kidney-shaped holes 31 of the second contacts 3, then the two ends of the positioning rotating shaft extend out of the side surfaces of the two first contacts 2 and are abutted on the pressing 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, meanwhile, the motion independence of the second contacts 3 between the two first contacts 2 is ensured, in addition, the split positioning rotating shaft is respectively arranged on the two second contacts 3 in a penetrating manner and does not penetrate through the second contacts 3, the respective stress effect between the two first contacts 2 and the two first springs 81 is realized, the motion independence of the second contacts 3 is not influenced, the design is reasonable, and the matching is reliable. Those skilled in the art can make a selection of the setting manner of the positioning shaft according to the above description, and other equivalent embodiments will not be described herein.

In this embodiment, although the preferred mode that the contact sleeve structure is fixedly connected with the first contact is given in the foregoing embodiment, the positioning rotating shaft after design can be used as a driving member, but as an alternative mode of the foregoing embodiment, the contact sleeve structure can also be selectively fixedly connected with the second contact to form a linkage fit, refer to fig. 10, a in fig. 10 represents the positioning rotating shaft, a fixed hole for fixedly connecting the driving member 5 is provided on the second contact 3, the driving member 5 is arranged in the fixed hole and is fixedly connected with the second contact 3, so that the second contact 3 drives the contact sleeve structure 5 to synchronously move relative to the two first contacts 2, and the two first contacts do not influence the second contact and the contact sleeve structure when moving, so that the movement independence of the second contact relative to the first contacts can be realized. Those skilled in the art can make a selection on the specific arrangement of the contact sleeve structure according to the above description, and other equivalent embodiments will not be described herein.

As shown in fig. 1 and fig. 6, two ends of the first rotating shaft 6 are respectively connected in two rotating grooves 12 on two side walls of the mounting cavity 11 through shaft sleeves 61, two limit clamping springs 62 for limiting the shaft sleeves 61 to deviate from the rotating grooves 12 are fixedly arranged on the first rotating shaft 6, rotating shaft supports 10 positioned on two sides of the two first contacts 2 are further arranged on the first rotating shaft 6, annular clamping grooves for fixing the limit clamping springs 62 are formed in the first rotating shaft 6, and the two shaft sleeves 61 are clamped in the annular clamping grooves through the limit clamping springs 62 to perform an axial limit function so as to prevent the two shaft sleeves 61 from deviating from the two rotating grooves 12, so that mounting reliability between the first rotating shaft 6 and the rotating shaft structure 1 is guaranteed, and structural stability is good.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art 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 moving contact subassembly on pivot structure (1), and set up moving contact subassembly with contact spring assembly (8) between pivot structure (1), its characterized in that: the movable contact assembly comprises two first contacts (2) arranged at 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 contacts (3) in a rotating mode through a first rotating shaft (6), wherein the two first contacts (2) and the second contacts (3) are arranged in a surrounding mode through the first rotating shaft (6) in a rotating mode, the contact sleeve structure (4) is movably sleeved to surround the second contacts (3) and separate the two first contacts (2) from the second contacts (3) adjacently, and a driving piece (5) used for driving the contact sleeve structure (4) to rotate is arranged between the at least one first contact (2) or the second contact and the contact sleeve structure (4) in a penetrating mode.

2. A multiple contact independent motion structure according to claim 1, wherein: the driving piece (5) passes through a second contact and a contact sleeve structure to be connected with two first contacts (2), waist-shaped holes (31) through which the driving piece (5) can rotate are correspondingly formed in the second contact (3), two connecting holes which are matched with the driving piece (5) are oppositely formed in the two first contacts (2), and a movable gap (40) is formed between the top of the second contact and the contact sleeve structure (4).

3. A multiple contact independent motion structure according to 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) is arranged in the fixing hole in a penetrating mode and fixedly connected with the second contact (3).

4. A multiple contact independent motion structure according to claim 2, wherein: the contact sleeve structure (4) is provided with a containing section (43) suitable for containing the second contact (3), and a U-shaped bulge (42) which is formed on the top of the containing section (43) and spans 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 motion structure according to claim 4, wherein: the contact sleeve structure (4) comprises at least two side plate surfaces (41) connected to two sides of the second contact (3), and U-shaped protrusions (42) integrally connected between the tops of the two side plate surfaces (41), wherein first through holes (44) used for being connected with the first rotating shaft (6) and second through holes used for being connected with the driving piece (5) are formed in the two side plate surfaces (41) in an opposite mode.

6. A multiple contact independent motion structure according to any one of claims 1-5, wherein: the one end of two first contacts (2) and second contact (3) is rotated through first pivot (6) and is set up in pivot structure's installation cavity (11), contact spring assembly (8) are including setting up two first springs (81) between one end of two first contacts (2) and pivot structure (1), and set up second spring (82) between one end of second contact (3) and pivot structure (1), two first contact (2) are restricted in two through first location structure the one end of first spring (81), second contact (3) are restricted in one end of second spring (82) through second location structure, the other end of two first springs (81) and second spring (82) is located in a plurality of constant head tanks (13) that form in installation cavity (11).

7. The multiple contact independent motion structure according to claim 6, wherein: the second positioning structure comprises: the positioning boss (32) is integrally formed on the boss 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 motion structure according to claim 7, wherein: the first positioning structure includes: the mounting cavity (11) is rotatably provided with a pressing plate structure which is matched and abutted with one ends of the two first springs (81), positioning rotating shafts which are respectively penetrated through the side faces of the two first contacts (2) back to the second contacts (3) and are abutted to the pressing plate structure, and the pressing plate structure (9) is provided with two positioning columns which are positioned and connected with one ends of the two first springs (81).

9. The multiple contact independent motion structure according to claim 8, wherein: the positioning rotating shaft integrally penetrates through the kidney-shaped holes (31) of the second contacts (3) to be connected with 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 are arranged in the same structure.

10. The multiple contact independent motion structure according to claim 8, wherein: the positioning rotating shafts are split, two first contacts (2) are correspondingly arranged in the axial direction, one ends of the two positioning rotating shafts are respectively arranged on the two first contacts in a penetrating way and are oppositely positioned at two sides of the second contact (3), and the other ends of the two positioning rotating shafts respectively extend out of the side surfaces of the two first contacts (2); when the driving piece is one of the positioning rotating shafts, the positioning rotating shaft penetrates through one of the first contacts (2) to be connected with the contact sleeve structure (4).

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

12. The multiple contact independent motion structure according to 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 the second rotating shaft (7).

13. A multi-contact independent motion structure according to any one of claims 6-10 or 12, characterized in that: the two ends of the first rotating shaft (6) are respectively connected into two rotating grooves (12) on the side walls of two sides of the mounting cavity (11) through shaft sleeves (61), two limit snap springs (62) used for limiting the shaft sleeves (61) to deviate from the rotating grooves (12) are fixedly arranged on the first rotating shaft (6), and rotating shaft supports (10) located on two sides of the two first contacts (2) are further arranged on the first rotating shaft (6).