CN217606755U

CN217606755U - Conductor clamping device

Info

Publication number: CN217606755U
Application number: CN202220580904.6U
Authority: CN
Inventors: 李凌飞; 吴昊; 沈维佳; 农振奖; 吴越; 刘亚南; 徐永富; 韦尚靖; 李小双; 周乐乐; 吴迪; 施黎明; 郭福安; 宫达
Original assignee: Shanghai Chint Intelligent Technology Co Ltd
Current assignee: Shanghai Chint Intelligent Technology Co Ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-10-18
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to a low-voltage apparatus field, concretely relates to conductor clamping device, it includes the support and installs at least a set of contact group on the support, every contact group includes two contacts, the contact includes the contact bridge, respectively sets up a contact site at the contact bridge both ends, the contact bridge relative setting of two contacts makes the contact sites of two contacts form the clamping part that is used for pressing from both sides tight conductor between, at least one contact in the contact group still includes the elastic part with contact bridge formula structure as an organic whole, support and elastic part butt, make contact group press from both sides the conductor that inserts its clamping part; the conductor clamping device is simple in structure and reliable in action, and assembly errors can be reduced to the maximum extent.

Description

Conductor clamping device

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to conductor clamping device.

Background

The circuit breaker is one of important electrical components in the field of low-voltage electrical appliances and is used for connecting and disconnecting current; when overcurrent or short-circuit fault occurs in the circuit, the circuit breaker automatically cuts off the circuit so as to protect the power supply circuit, the motor and other circuits or equipment.

One of the connection modes of the circuit breaker is that the two ends of the bridge-type contact are respectively connected with a circuit breaker body bus bar and an external bus bar to realize the electrical connection between the circuit breaker and an external circuit; the existing bridge-shaped contact is generally assembled together by combining the contact with elastic parts such as a spring piece, a tension spring or a pressure spring and the like, so that the clamping force of the bridge-shaped contact on an internal/external bus bar is realized, the number of parts is large, the installation is complicated, and the assembly error is large.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a conductor clamping device, its simple structure, action are reliable, and assembly error is little.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a conductor clamping device, its includes the support and installs at least a set of contact group on the support, every contact group includes two contacts, the contact respectively sets up a contact site touching the bridge both ends including touching the bridge, and the contact bridge of two contacts sets up relatively and makes and form the clamping part that is used for pressing from both sides tight conductor between the contact site of two contacts, at least one contact in the contact group still include with touch the elastic part of bridge formula structure as an organic whole, support and elastic part butt for make contact group press from both sides the conductor of inserting its clamping part tightly.

Preferably, the contact bridges are rotatably arranged on the support through a rotating shaft structure, and the two contact bridges can be close to or far away from each other.

Preferably, the elastic part is a spring plate, two ends of the spring plate are respectively connected with two ends of the contact bridge, and the spring plate and the contact bridge are enclosed to form an avoiding gap.

Preferably, the support includes mounting panel and support linking arm, and two sets of mounting panels are relative interval to be set up, and the both ends of two sets of mounting panels link to each other through the support linking arm respectively, and support linking arm and shell fragment butt, contact group are located between two sets of mounting panels, and two sets of support linking arms are located two contact both sides of contact group respectively and respectively with two spacing cooperations of contact.

Preferably, in each group of the contacts, the two contacts are symmetrical to each other.

Preferably, the rotating shaft structure comprises a support pillow block arranged on the support and a positioning part arranged on the contact bridge, the positioning part is provided with two positioning part grooves, and the two positioning part grooves are positioned at two radial sides of the support pillow block and are respectively matched with the support pillow block;

or, pivot structure is including setting up the public axle on the support and setting up the location portion on touching the bridge, and location portion is equipped with location portion recess, and two location portion recesses are located the radial both sides of public axle and cooperate rather than respectively.

Preferably, the rotating shaft structure comprises a single shaft arranged on the support, and each contact is rotatably arranged on the support through the corresponding single shaft; the contact bridge of the contact is provided with a waist-shaped hole or a groove matched with the single shaft.

Preferably, the holder further comprises a stop for limiting the depth of insertion of the conductor, the stop being located between two contacts of the contact set.

Preferably, the contact bridge comprises a long arm and a short arm which are positioned at two sides of the rotation center of the contact bridge and are connected with each other, and the free ends of the long arm and the short arm are both provided with contact parts; the blocking part is positioned between the contact part and the positioning part of the long arm and used for limiting the positioning part.

Preferably, the conductor clamping device includes a plurality of contact groups, each of which is stacked in a direction of a rotation axis of the contact.

The utility model discloses a conductor clamping device, the contact bridge and the elastic component formula structure as an organic whole of its contact have reduced conductor clamping device's part quantity, have simplified conductor clamping device's structure, compare in prior art components of a whole that can function independently the elastic component that sets up with touch the bridge, especially reduced assembly error, effectively improved conductor clamping device's stability, reliability, and guaranteed the uniformity of conductor clamping device's clamp force.

In addition, the blocking part is in limit fit with the external bus bar so as to prevent the external bus bar from being inserted too deeply between the two contacts and abutting against the positioning part, so that the situation that the clamping position of the contact group is incorrect and the clamping force is insufficient is caused; the blocking part is in limit fit with the positioning part to prevent the contact from being separated from the support.

Drawings

Fig. 1 is a schematic structural view of a conductor clamping device according to a first embodiment of the present invention;

fig. 2 is an exploded view of a conductor clamping device according to a first embodiment of the present invention;

fig. 3 is a schematic diagram of a structure of the first embodiment of the present invention, in which the conductor clamping device is respectively inserted into and engaged with the main bar and the external bar of the circuit breaker body;

fig. 4 is a schematic cross-sectional view illustrating the insertion and engagement of the conductor clamping device of the first embodiment of the present invention with the main bar and the external bar of the circuit breaker body, respectively;

fig. 5 is a schematic structural view of a conductor clamping device according to a second embodiment of the present invention;

fig. 6 is a schematic structural view of a conductor clamping device according to a third embodiment of the present invention;

fig. 7 is a schematic structural view of a conductor clamping device according to a fourth embodiment of the present invention.

Detailed Description

The following description will further describe embodiments of the conductor clamping device according to the present invention with reference to the embodiments shown in fig. 1 to 7. The conductor clamping device of the present invention is not limited to the description of the following embodiments.

The utility model discloses a conductor clamping device, it includes support 1 and at least a set of contact group, each contact group includes two contacts 2 of relative cooperation, contact 2 includes contact bridge 2-0, set up a contact site 2-1 respectively at contact bridge 2-0 both ends, the contact bridge 2-0 relative setting of two contacts 2 makes the contact site 2-1 of two contacts 2 form the clamping part that is used for pressing from both sides tight conductor between; in each group of contact group, at least one contact 2 further comprises an elastic part 2-3 which is arranged on the contact bridge 2-0 and integrated with the contact bridge 2-0, the support 1 is abutted against the elastic part 2-3 to drive the contact parts 2-1 of the two contact bridges 2-0 to approach each other, so that the contact group clamps a conductor inserted into the clamping part of the contact group.

The utility model discloses conductor clamping device, its contact 2 touch bridge 2-0 and elastic component 2-3 formula structure as an organic whole, reduced conductor clamping device's part quantity, simplified conductor clamping device's structure, compare in prior art components of a whole that can function independently the elastic component that sets up with touch the bridge, especially reduced assembly error, effectively improved conductor clamping device's stability, reliability, guaranteed the uniformity of conductor clamping device's clamp force.

As shown in fig. 1-4, for the first embodiment of the conductor clamping device of the present invention, it is used in a circuit breaker to connect a busbar of a circuit breaker body and an external busbar (preferably, a busbar for connecting the circuit breaker and an external circuit). Obviously, the connector can also be used in other switching devices to connect two conductors in a plugging manner, and the conductors are not limited to busbars. As shown in fig. 1-4, the conductor clamping device of the present invention comprises a support 1 and a set of contact sets, wherein the contact sets comprise two contacts 2 which are relatively matched, a contact bridge 2-0 of the contact 2 is rotatably disposed on the support 1 through a rotating shaft structure, and the two contact bridges 2-0 can be close to or far away from each other; the contact bridges 2-0 of the two contacts 2 are oppositely arranged between the two ends of the contact bridges 2-0 to form two clamping parts for clamping conductors, the contact bridges 2-0 are provided with elastic parts 2-3 which are integrally formed with the contact bridges 2-0, the elastic parts 2-3 are abutted against the bracket 1, and the deformation of the elastic parts 2-3 exerts acting force which enables the two contact bridges 2-0 to be close to each other on the contact bridges 2-0 so that the contact group clamps the conductors inserted into the clamping parts. In the contact group, when the clamping part at one end of two contacts 2 is inserted into the conductor, the contacts 2 rotate through the rotating shaft structure; when the two ends of the two contacts 2 are inserted into the conductors, the two contacts 2 overcome the acting force of the elastic parts 2-3 and are far away from each other, and after the conductors are pulled out, the elastic parts 2-3 drive the two contacts 2 to approach each other.

As shown in fig. 2 and 4, the contact 2 includes a contact bridge 2-0, and two ends of the contact bridge 2-0 are respectively provided with a contact portion 2-1; in the contact group, at least one contact 2 further comprises an elastic part 2-3 which is arranged on the contact bridge 2-0 and is of an integrated structure with the contact bridge, and the support 1 is abutted against the elastic part 2-3, so that the contact group is clamped and inserted into a busbar between the contacts 2.

As shown in fig. 2 and 4, the elastic part 2-3 is a spring plate, two ends of the spring plate are respectively connected with two ends of the contact bridge 2-0, the spring plate and the contact bridge 2-0 enclose to form an avoidance gap 2-4, a space is provided for elastic deformation of the spring plate, and the middle part of the spring plate is abutted against the support 1.

Preferably, as shown in fig. 2 and 4, in the same contact 2, the spring and the contact portion 2-1 are respectively located on two sides of the contact bridge 2-0.

Preferably, as shown in fig. 4, the avoiding gap 2-4 is shaped such that the width gradually decreases from the middle of the elastic sheet to the two ends thereof.

As another embodiment, the elastic portion 2-3 includes two elastic pieces respectively disposed at two ends of the contact bridge 2-0, and the two elastic pieces are symmetrically disposed and respectively abutted against the bracket 1.

The specific structural form and the setting position of the elastic sheet can be adjusted according to actual needs.

As shown in fig. 1, 3 and 4, the support 1 includes support plates 1-0 and support connecting arms 1-1, two sets of support plates 1-0 are arranged at a relative interval, two ends of the two sets of support plates 1-0 are respectively connected through the support connecting arms 1-1, two ends of each support connecting arm 1-1 are respectively connected with the two sets of support plates 1-0, the support connecting arms 1-1 are abutted to the elastic sheet, the contact group is located between the two sets of support plates 1-0, the two sets of support connecting arms 1-1 are respectively located at two sides of two contacts 2 of the contact group and respectively in spacing fit with the two contacts 2, and the two sets of support connecting arms 1-1 act on the middle part of the elastic sheet.

As shown in fig. 2 and 4, in the contact group, two contacts 2 are symmetrical to each other, and the contact bridges 2-0 of the two contacts 2 are provided with elastic parts 2-3 which are integrally formed. Further, two bracket connecting arms 1-1 of the bracket 1 are respectively abutted against elastic parts 2-3 (namely, elastic pieces) of the two contacts 2.

As other embodiments, only one contact 2 of the contact group is provided with the spring portion 2-3.

As shown in fig. 3-4, in the contact group, one end of two contacts 2 is a first contact end, and the other end is a second contact end, when a busbar is inserted between the first contact ends, the contacts 2 rotate around their rotation axes (i.e. rotate through a rotation shaft structure), when a busbar is also inserted between the second contact ends, the busbar presses the two contacts 2 to move to both sides, and simultaneously the two contacts 2 rotate around their respective first contact ends, and the elastic portion 2-3 elastically deforms due to the abutting of the elastic portion 2-3 with the bracket connecting arm 1-1 of the bracket 1, so that the contact portion 2-1 of the two contacts 2 clamps the busbar inserted therebetween.

As shown in fig. 2 and 4, the rotating shaft structure includes a support pillow block 1-2 disposed on the support 1 and a positioning portion 2-2 disposed on the contact bridge 2-0, the positioning portion 2-2 is provided with positioning portion grooves, and the two positioning portion grooves are located at two radial sides of the support pillow block 1-2 and are respectively matched with the two positioning portion grooves. Furthermore, in the contact group, the positioning parts 2-2 of the two contacts 2 are oppositely arranged bulges.

As shown in fig. 1-3, two support plates 1-0 of the support 1 are respectively provided with a support pillow block 1-2, the two support pillow blocks 1-2 are coaxially arranged oppositely, and the support plate 1-0 and the support pillow block 1-2 are preferably of an integrated structure; when the bus bar is not inserted into the contact group, the inner walls of the positioning part grooves of the two positioning parts 2-2 are respectively abutted against the support pillow block 1-2, and after the bus bar is inserted into both ends of the contact group, the inner walls of the positioning grooves are separated from the support pillow block 1-2.

As shown in fig. 1-4, the holder 1 further comprises a stop 1-3 for limiting the depth of insertion of the conductor, the stop 1-3 being located between two contacts 2 of a contact set. Preferably, the blocking plates 1-3 are also positioned between one end of the two contacts 2 matched with the external busbar 4 and the positioning parts 2-2, and the blocking parts 1-3 are respectively in limit fit with the external busbar 4 and the positioning parts 2-2; the blocking parts 1-3 are in limit fit with the external busbar 4 to prevent the external busbar from being inserted into the position between the two contacts 2 too deeply and abutting against the positioning parts 2-2, so that the situation that the clamping force is insufficient due to incorrect clamping position of the contact group is caused; the blocking part 1-3 is in limit fit with the positioning part 2-2 to prevent the contact 2 from being separated from the support 1 (for example, when the external busbar 4 is drawn out, the movable contact 2 is taken out of the support 1).

As shown in fig. 2 and 4, the contact 2 includes a long arm and a short arm which are located at both sides of the rotation center and connected to each other, and the free ends of the long arm and the short arm are both provided with a contact part 2-1; in each contact group, the long arms of two contact bridges 2-0 clamp an external bus bar 4, and the short arms of two contact bridges 2-0 clamp a breaker body bus bar 3; the blocking part 1-3 is positioned between the contact part 2-1 and the positioning part 2-2 of the long arm and used for limiting the positioning part 2-2 and preventing the contact 2 from being separated from the bracket 1.

As shown in fig. 1-4, is an embodiment of the stent 1: the support 1 comprises support plates 1-0 and support connecting arms 1-1, the two support plates 1-0 are arranged at intervals, two ends of each support connecting arm 1-1 are respectively connected with the two support plates 1-0, two ends of each support plate 1-0 are respectively connected with one support arm 1-1, each support plate 1-0 is provided with a support pillow block 1-2, the two support pillow blocks 1-2 are coaxially arranged oppositely and located between the two support plates 1-0, one support plate 1-0 is provided with a blocking part 1-3, and the support pillow blocks 1-2 and the blocking parts 1-3 are located between the two support connecting arms 1-1. Further, the bracket 1 is of an integrated structure.

As shown in fig. 2 and 4, is an embodiment of the contact 2: the contact 2 comprises a contact bridge 2-0, and a contact part 2-1, a positioning part 2-2 and an elastic part 2-3 which are arranged on the contact bridge 2-0, wherein two ends of the contact bridge 2-0 are respectively provided with one contact part 2-1, the elastic part 2-3 is a spring plate, two ends of the spring plate are respectively connected with two ends of the contact bridge 2-0, the spring plate and the contact bridge 2-0 enclose to form an avoiding gap 2-4, the positioning part 2-2 and the contact part 2-1 are positioned at the same side of the contact bridge 2-0, the positioning part 2-2 is positioned between the two contact parts 2-1, and the positioning part 2-2 is provided with a positioning part groove.

The contact 2 is made of an elastic alloy material. The elastic alloy material is Fe-Ni-Cr system, ni-Ct system, ni-Cr-Nb system, ni-Co-Cr system, nb-Ti system or Fe-Ni-Co system alloy.

As other examples, the elastic alloy material is a copper-based alloy, such as tin-phosphor bronze, beryllium bronze, or the like.

The contact 2 has no magnetism, high micro-plastic deformation resistance, high hardness, low resistivity, low temperature coefficient of elastic modulus and low internal consumption.

Fig. 5 shows a second embodiment of the conductor clamping device according to the present invention.

The second embodiment differs from the first embodiment in that: the rotating shaft structure comprises a common shaft 6 arranged on the support 1 and a positioning part 2-2 arranged on the contact bridge 2-0, wherein the positioning part 2-2 is provided with two positioning part grooves which are positioned on two radial sides of the common shaft 6 and are respectively matched with the common shaft 6. Further, the bracket plate 1-0 of the bracket 1 is provided with a first bracket hole 1-4 into which a common shaft 6 is inserted.

As shown in fig. 6, a third embodiment of the conductor clamping device of the present invention is shown.

The third embodiment differs from the first embodiment in that: the pivot structure is including setting up unipolar 7 on support 1, and each contact 2 rotates the setting on support 1 through the unipolar 7 that corresponds respectively. Further, a bracket plate 1-0 of the bracket 1 is provided with a second bracket hole 1-5 for inserting the single shaft 7; and a contact bridge 2-0 of the contact 2 is provided with a waist-shaped hole or a groove matched with the single shaft 7.

When the contact bridge 2-0 is provided with a waist-shaped hole matched with the single shaft 7, the contact 2 is not provided with the positioning part 2-2.

Fig. 7 shows a fourth embodiment of the conductor clamping device according to the present invention.

The fourth embodiment may be modified from the conductor clamping device of the first to third embodiments, and the conductor clamping device of the fourth embodiment includes a plurality of contact groups each of which is stacked in the direction of the rotation axis of the contact 2.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. The utility model provides a conductor clamping device, its includes support (1) and installs at least a set of contact group on support (1), every contact group of group includes two contacts (2), contact (2) are including touching bridge (2-0), respectively set up one contact site (2-1) touching bridge (2-0) both ends, and the bridge (2-0) of touching of two contacts (2) set up relatively and make between the contact site (2-1) of two contacts (2) form the clamping part that is used for pressing from both sides tight conductor, its characterized in that: at least one contact (2) in the contact group further comprises an elastic part (2-3) which is of an integrated structure with the contact bridge (2-0), and the support (1) is abutted against the elastic part (2-3) and used for enabling the contact group to clamp a conductor inserted into the clamping part of the contact group.

2. The conductor clamping device of claim 1, wherein: the contact bridges (2-0) are rotatably arranged on the support (1) through a rotating shaft structure, and the two contact bridges (2-0) can approach to or depart from each other.

3. The conductor clamping device of claim 1, wherein: the elastic part (2-3) is a spring plate, two ends of the spring plate are respectively connected with two ends of the contact bridge (2-0), and the spring plate and the contact bridge (2-0) enclose to form an avoiding gap (2-4).

4. The conductor clamping device of claim 3, wherein: the support (1) comprises support plates (1-0) and support connecting arms (1-1), the two groups of support plates (1-0) are arranged at intervals, two ends of the two groups of support plates (1-0) are connected through the support connecting arms (1-1) respectively, the support connecting arms (1-1) are abutted to the elastic sheets, the contact group is located between the two groups of support plates (1-0), and the two groups of support connecting arms (1-1) are located on two sides of two contacts (2) of the contact group respectively and are in limit fit with the two contacts (2) respectively.

5. The conductor clamping device of claim 1, wherein: in each group of the contacts, two contacts (2) are in a symmetrical structure.

6. The conductor clamping device of claim 2, wherein:

the rotating shaft structure comprises a support pillow block (1-2) arranged on the support (1) and a positioning part (2-2) arranged on the contact bridge (2-0), wherein the positioning part (2-2) is provided with two positioning part grooves which are positioned at two radial sides of the support pillow block (1-2) and are respectively matched with the two positioning part grooves;

or the rotating shaft structure comprises a common shaft (6) arranged on the support (1) and a positioning part (2-2) arranged on the contact bridge (2-0), wherein the positioning part (2-2) is provided with positioning part grooves, and the two positioning part grooves are positioned on two radial sides of the common shaft (6) and are respectively matched with the common shaft.

7. The conductor clamping device of claim 2, wherein: the rotating shaft structure comprises a single shaft (7) arranged on the support (1), and each contact (2) is rotatably arranged on the support (1) through the corresponding single shaft (7); the contact bridge (2-0) of the contact (2) is provided with a waist-shaped hole or a groove matched with the single shaft (7).

8. The conductor clamping device of claim 1, wherein: the support (1) further comprises a blocking part (1-3) for limiting the insertion depth of the conductor, and the blocking part (1-3) is positioned between the two contacts (2) of the contact group.

9. The conductor clamping device of claim 8, wherein: the contact bridge (2-0) comprises a long arm and a short arm which are positioned on two sides of the rotation center of the contact bridge and are connected with each other, and the free ends of the long arm and the short arm are both provided with contact parts (2-1); the blocking part (1-3) is positioned between the contact part (2-1) of the long arm and the positioning part (2-2) and used for limiting the positioning part (2-2).

10. The conductor clamping device of claim 1, wherein: the conductor clamping device comprises a plurality of groups of contact groups, and the contact groups are overlapped along the rotating axis direction of the contact (2).