High heat dissipation type power switch cabinet contact

Abstract

The invention belongs to the technical field of power equipment, and particularly relates to a high-heat-dissipation type power switch cabinet contact which comprises an external bus, a mounting bracket, a pressing mounting shaft, a pressure spring and a contact piece, contact pieces which abut against the two sides of an external bus respectively, a pressing installation shaft and a compression spring are symmetrically installed on the installation support, the pressing installation shaft and the compression spring are used for providing elastic locking pressure for the contact pieces on the corresponding sides, and a heat dissipation gap is reserved between the contact pieces on the same side. The contact piece is in surface contact with the external bus, so that the conductivity is greatly improved; the structural stability is high after the contact piece is installed; the heat dissipation gaps are arranged between the contact pieces or on the contact pieces, and the first heat dissipation grooves convenient for leading out internal heat and the second heat dissipation grooves matched with the heat dissipation gaps are arranged on the pressure springs, so that the contact of the power switch cabinet has the advantage of high heat dissipation performance, and the heat generated by the contact pieces can be dissipated in time.

Description

Technical Field

[0001] The present invention belongs to the technical field of power equipment, and particularly relates to a high heat dissipation type power switch cabinet contact Background Art

[0002] In a power switch cabinet, a busbar and a circuit breaker are provided. The circuit breaker is installed on a drawer cabinet, and the circuit breaker is driven by the drawer cabinet to contact the busbar to realize the operation of the power cabinet. During operation, it is necessary to form a plug-in fit between the external busbar of the drawer seat and the body plug on the circuit breaker. During the plug-in process, a contact is required. As a conductive connection member between the busbar and the circuit breaker, one end of the contact is responsible for connecting to the busbar, and the other end is responsible for connecting to the body plug of the circuit breaker.

[0003] The patent description with the publication number CN218414310U discloses a heat dissipation type power switch cabinet contact, including a bracket with installation openings provided at both its upper and lower ends; upper and lower contact blade assemblies respectively installed in the upper and lower installation openings; each contact blade assembly includes a plurality of contact blades and an elastic locking mechanism; wherein, the contact blades are spaced apart in the installation opening to form a first heat dissipation groove between the contact blades, the front and rear ends of each contact are used as contact ends and extend out of the bracket, and front sockets and rear sockets are respectively formed between the contact ends at the front and rear ends of each upper contact and the contact ends at the front and rear ends of each lower contact; the elastic locking mechanism is provided on the bracket and is adapted to elastically press the outer sides of the contact blades. When metal plugs are respectively inserted into the front socket and the rear socket, the contact blades are squeezed and driven to move outward. By adding heat dissipation grooves between the contact blades, it is convenient for the heat generated by the contact blades to dissipate.

[0004] The above-mentioned power switch cabinet contact is found to have deficiencies during use. First, the overall structural design is not reasonable enough, and the heat dissipation effect still needs to be further improved; second, the contact blade cannot achieve surface contact with the busbar, and the electrical conductivity is not ideal; third, the structural stability after the contact blade is installed on the bracket is poor. The contact blade is only limited in the thickness direction and not effectively limited in the length direction, that is, there is a bad phenomenon of displacement of the contact blade when the metal plug is inserted; fourth, its contact blade does not have an anti-misalignment structure design, making it easy for the contact ends at both ends of the contact blade to be misaligned during assembly. Therefore, it is necessary to optimize and improve the above-mentioned power switch cabinet contact. Summary of the Invention

[0005] The purpose of the present invention is to overcome at least one of the above problems existing in the traditional technology, and provide a high heat dissipation type power switch cabinet contact.

[0006] To achieve the above technical purpose and reach the above technical effect, the present invention is realized through the following technical solutions:

[0007] The present invention provides a high heat dissipation type power switch cabinet contact, which includes an external busbar, a mounting bracket, a pressing mounting shaft, a compression spring and a contact piece. The mounting bracket is symmetrically installed with contact pieces respectively abutting against both sides of the external busbar, as well as a pressing mounting shaft and a compression spring for providing elastic locking pressure for the corresponding side contact pieces. There is a heat dissipation gap between the contact pieces on the same side.

[0008] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the mounting bracket includes a front bracket plate, side bracket plates and a rear bracket plate. The two sides of the front bracket plate are symmetrically installed with side bracket plates integrally connected thereto. The pressing mounting shafts are respectively installed between the upper and lower ends of the two side bracket plates on the same side. The middle part of the side bracket plate is provided with a first limiting plate penetrating through the rear bracket plate. A number of first bosses are symmetrically installed on the upper and lower edges of the front bracket plate, and a number of second bosses are symmetrically installed on the upper and lower edges of the rear bracket plate.

[0009] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the positions of the first bosses and the second bosses correspond one by one, and the specifications of the first bosses and the second bosses are different.

[0010] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the rear bracket plate is formed by stamping and bending to have a second limiting plate for restricting the vertical displacement of the external busbar. The two first limiting plates are jointly used for restricting the horizontal and transverse displacement of the external busbar.

[0011] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the external busbar includes a busbar block body. The front ends of both sides of the busbar block body are symmetrically provided with abutting grooves for facilitating abutment with the contact pieces, and the front end face of the busbar block body is internally provided with a limiting groove matching the shape of the second limiting plate.

[0012] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the width value of the busbar block body is equal to the spacing value between the two first limiting plates. The first limiting plate has a vertical plate structure for facilitating abutment with the side end face of the busbar block body. The second limiting plate has an isosceles triangle structure, and the pointed head of the isosceles triangle structure faces outwards and is rounded.

[0013] Further, in the above-mentioned high heat dissipation type power switch cabinet contact, the compression spring is composed of a concave section, a connecting section and an arched elastic section. The front and rear ends of the concave section are respectively connected with arched elastic sections through the connecting section. The outer side of the concave section is provided with an anti - detachment concave surface for facilitating cooperation with the pressing mounting shaft. The anti - detachment concave surface is uniformly provided with first heat dissipation grooves along its length direction. The arched elastic section includes a number of arched elastic pieces, and a second heat dissipation groove matching the position of the heat dissipation gap is formed between adjacent two arched elastic pieces.

[0014] Furthermore, in the above-mentioned high heat dissipation type power switch cabinet contact, the contact includes a contact body, the rear end of the contact body is provided with a first contact end that cooperates with the external busbar, and the front end is provided with a second contact end that cooperates with the metal plug-in; the contact body is provided with a first anti-error positioning hole that cooperates with the first boss and a second anti-error positioning hole that cooperates with the second boss.

[0015] Furthermore, in the above-mentioned high heat dissipation type power switch cabinet contact, the contact piece and the external busbar adopt surface contact, and the length and width of the transverse contact surface are greater than the thickness of the contact piece.

[0016] Furthermore, in the above-mentioned high heat dissipation type power switch cabinet contact, the shape of the arched spring segment in the compression spring matches the outer surface shape of the corresponding first contact end or the second contact end.

[0017] Furthermore, in the above-mentioned high heat dissipation type power switch cabinet contact, the contact pieces located on the same side are of an integrated structure or a split structure.

[0018] The beneficial effects of the present invention are:

[0019] 1. The power switch cabinet contact provided by the present invention is reasonably designed. By arranging a heat dissipation gap between the contact pieces or on the contact pieces, and arranging a first heat dissipation groove on the compression spring for facilitating the internal heat dissipation and a second heat dissipation groove cooperating with the heat dissipation gap, the power switch cabinet contact has the advantage of high heat dissipation, which is convenient for timely dissipation of the heat generated by the contact pieces.

[0020] 2. In the present invention, the contact piece and the external busbar are in surface contact, and the length and width of the transverse contact surface are greater than the thickness of the contact piece, which greatly improves the conductive performance.

[0021] 3. The contact pieces of the present invention have high structural stability after installation. The contact pieces are matched with the bosses in the mounting bracket by a snap-fit ​​positioning method. The compression mounting shaft and the compression spring can reliably compress the contact pieces from the outside, so that the contact pieces can be stably installed on the bosses of the mounting bracket. This method avoids the use of springs to provide elastic force and directly uses a single spring piece to crimp the contact pieces. The assembly efficiency is high and the operation is convenient and quick.

[0022] 4. In the present invention, an anti-misalignment structure is provided between the contact piece and the mounting bracket to avoid misalignment of the two contact ends of the contact piece during assembly.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a front view schematic diagram of the present invention as a whole;

[0027] Figure 3 It is a schematic top view of the present invention as a whole;

[0028] Figure 4 This is a schematic diagram of the structure of the present invention after omitting the external busbar;

[0029] Figure 5 It is a schematic diagram of the structure of the present invention after omitting the external busbar and the upper compression spring;

[0030] Figure 6 This is a schematic diagram of the structure of the mounting bracket of the present invention at one angle;

[0031] Figure 7 It is a structural schematic diagram of another angle of the mounting bracket in the present invention;

[0032] Figure 8 It is a structural schematic diagram of the external busbar in the present invention;

[0033] Figure 9 It is a schematic diagram of the structure of the compression spring in the present invention;

[0034] Figure 10 It is a schematic diagram of the structure of the contact piece in the present invention;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1-external busbar, 101-busbar block body, 102-contact groove, 103-limiting groove;

[0037] 2-mounting bracket, 201-bracket front plate, 202-bracket side plate, 203-bracket rear plate, 204-fastening through hole, 205-first boss, 206-first limiting plate, 207-second boss, 208-second limiting plate;

[0038] 3-Tighten the installation shaft;

[0039] 4-compression spring, 401-concave section, 402-connecting section, 403-arched spring section, 404-first heat dissipation slot, 405-second heat dissipation slot;

[0040] 5 - contact piece, 501 - contact piece body, 502 - first contact end, 503 - second contact end, 504 - first anti - misalignment positioning hole, 505 - second anti - misalignment positioning hole. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0042] Embodiment 1

[0043] As Figures 1 - 5 shown, this embodiment provides a high - heat - dissipation type power switch cabinet contact, including an external bus 1, a mounting bracket 2, a pressing mounting shaft 3, a compression spring 4, and a contact piece 5. The mounting bracket 2 is symmetrically installed with contact pieces 5 respectively abutting against both sides of the external bus 1, and a pressing mounting shaft 3 and a compression spring 4 for providing elastic locking pressure for the corresponding - side contact pieces 5. There is a heat - dissipation gap between the contact pieces 5 on the same side.

[0044] As Figures 6 - 7 shown, the mounting bracket 2 includes a bracket front plate 201, bracket side plates 202, and a bracket rear plate 203. The two sides of the bracket front plate 201 are symmetrically installed with bracket side plates 202 integrally connected thereto. The pressing mounting shafts 3 are respectively installed between the upper and lower ends of the two bracket side plates 202 on the same side. A first limiting plate 206 penetrating the bracket rear plate 203 is provided in the middle of the bracket side plate 202. A number of first bosses 205 are symmetrically installed on the upper and lower edges of the bracket front plate 201, and a number of second bosses 207 are symmetrically installed on the upper and lower edges of the bracket rear plate 203.

[0045] In this embodiment, the positions of the first bosses 205 and the second bosses 207 correspond one by one, and the specifications of the first bosses 205 and the second bosses 207 are different.

[0046] In this embodiment, the bracket rear plate 203 is formed by stamping and bending to have a second limiting plate 208 for restricting the vertical displacement of the external bus. The two first limiting plates 206 are jointly used to restrict the horizontal and lateral displacement of the external bus 1.

[0047] As Figure 8 shown, the external bus 1 includes a bus block body 101. On both sides of the front end of the bus block body 101, there are symmetrically opened abutting grooves 102 for facilitating abutment with the contact piece 5. The front end surface of the bus block body 101 is inwardly opened with a limiting groove 103 that matches the shape of the second limiting plate 208.

[0048] In this embodiment, the width of the busbar block body 101 is equal to the spacing between the two first limiting plates 206. The first limiting plate 206 is a vertical plate structure that is convenient for abutting against the side end surface of the busbar block body 101. The second limiting plate 208 is an isosceles triangle structure, and the pointed end of the isosceles triangle structure faces outward and is rounded.

[0049] like Figure 9 As shown, the compression spring 4 is composed of a concave section 401, a connecting section 402 and an arched spring section 403, and the front and rear ends of the concave section 401 are respectively connected to the arched spring section 403 through the connecting section 402. The outer side of the concave section 401 is provided with an anti-slip concave surface that is convenient for cooperating with the compression installation shaft 3, and the anti-slip concave surface is uniformly distributed with first heat dissipation grooves 404 along its length direction. The arched spring section 403 includes a plurality of arched spring pieces, and a second heat dissipation groove 405 is formed between two adjacent arched spring pieces.

[0050] like Figure 10 As shown, the contact 5 includes a contact body 501, the rear end of the contact body 501 is provided with a first contact end 502 that cooperates with the external busbar 1, and the front end is provided with a second contact end 503 that cooperates with the metal plug. The contact body 501 is provided with a first anti-mistake positioning hole 504 that cooperates with the first boss 205 and a second anti-mistake positioning hole 505 that cooperates with the second boss 207.

[0051] In this embodiment, the shape of the arch spring segment 403 in the compression spring 4 matches the outer surface shape of the corresponding first contact end 502 or the second contact end 503 .

[0052] In this embodiment, the contact pieces 5 on the same side are split structures, the width of the contact body 501 matches the width of the arch spring in the compression spring 4, and the spacing between the contact bodies 501 is equal to the slot width of the second heat dissipation slot 405.

[0053] A specific application of this embodiment is: by leaving a heat dissipation gap between each contact piece 5, a first heat dissipation groove 404 for facilitating the internal heat dissipation and a second heat dissipation groove 405 cooperating with the heat dissipation gap are provided on the compression spring 4, so that the contacts of the power switch cabinet have the advantage of high heat dissipation, and the heat generated by the contact piece can be dissipated in time.

[0054] The contact piece 5 and the external busbar 1 are in surface contact, and the length and width of the transverse contact surface are greater than the thickness of the contact piece 5, which greatly improves the conductive performance.

[0055] After the contact piece 5 is installed, the structural stability is relatively high. The contact piece 5 is fitted with the boss in the mounting bracket 2 by a snap - fit positioning method. The pressing mounting shaft 3 and the compression spring 4 can reliably press the contact piece 5 from the outside, so that the contact piece 5 can be stably installed on the boss of the mounting bracket 2. This method of directly pressing the contact piece 5 by a single elastic piece instead of using a spring to provide elastic force has a high assembly efficiency and is convenient and fast to operate.

[0056] An anti - misalignment structure is provided between the contact piece 5 and the mounting bracket 2, which can prevent the two contact ends of the contact piece 5 from being assembled out of alignment.

[0057] Embodiment Two

[0058] The difference between this embodiment and Embodiment One is that the contact pieces 5 on the same side are of an integral structure, and a number of opening grooves (i.e., heat dissipation gaps) are symmetrically arranged at the front and rear ends of the contact piece 5.

[0059] Embodiment Three

[0060] In this embodiment, the mounting bracket 2 is connected to the external bus bar 1 through fasteners. Corresponding fastening through - holes 204 for facilitating the installation of fasteners are provided on the front bracket plate 201 and the rear bracket plate 203. A fastening screw hole for facilitating the installation of fasteners is provided at the inner end of the limit groove 103. The fastener can be screwed into the corresponding fastening screw hole through the fastening through - hole 204.

[0061] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A high heat dissipation type power switch cabinet contact, characterized in that: It includes an external busbar, a mounting bracket, a clamping mounting shaft, a compression spring and contact pieces. The mounting bracket is symmetrically provided with contact pieces that abut against both sides of the external busbar respectively, and a clamping mounting shaft and a compression spring for providing elastic locking pressure for the contact pieces on the corresponding sides. A heat dissipation gap is left between the contact pieces on the same side.

2. The high heat dissipation type power switch cabinet contact according to claim 1, characterized in that: The mounting bracket includes a bracket front plate, a bracket side plate and a bracket rear plate, the bracket front plate is symmetrically installed with bracket side plates connected thereto on both sides, a clamping mounting shaft is respectively installed between the upper and lower ends of the two bracket side plates located on the same side, a first limiting plate penetrating the bracket rear plate is provided in the middle of the bracket side plate, a plurality of first bosses are symmetrically installed on the upper and lower edges of the bracket front plate, and a plurality of second bosses are symmetrically installed on the upper and lower edges of the bracket rear plate.

3. The high heat dissipation type power switch cabinet contact according to claim 2, characterized in that: The positions of the first boss and the second boss correspond one to one, and the specifications of the first boss and the second boss are different.

4. The high heat dissipation type power switch cabinet contact according to claim 3, characterized in that: The rear plate of the bracket is formed by stamping and bending to form a second limiting plate for limiting the vertical displacement of the external busbar, and the two first limiting plates are used together to limit the horizontal lateral displacement of the external busbar.

5. The high heat dissipation type power switch cabinet contact according to claim 4, characterized in that: The external busbar includes a busbar block body, and the front ends of the busbar block body are symmetrically provided with abutment grooves for abutting against the contact pieces, and the front end of the busbar block body is inwardly provided with a limiting groove matching the shape of the second limiting plate.

6. The high heat dissipation type power switch cabinet contact according to claim 5, characterized in that: The width of the busbar block body is equal to the spacing between the two first limit plates. The first limit plate is a vertical plate structure that is convenient for abutting against the side end surface of the busbar block body. The second limit plate is an isosceles triangle structure, and the pointed end of the isosceles triangle structure faces outward and is rounded.

7. The high heat dissipation type power switch cabinet contact according to claim 6, characterized in that: The compression spring is composed of a concave section, a connecting section and an arched spring section. The front and rear ends of the concave section are respectively connected to the arched spring section via the connecting section. The outer side of the concave section is provided with an anti-slip concave surface that is convenient for cooperating with the clamping installation shaft. The anti-slip concave surface is evenly distributed with first heat dissipation grooves along its length direction. The arched spring section includes a plurality of arched spring pieces, and a second heat dissipation groove that cooperates with the heat dissipation gap position is formed between two adjacent arched spring pieces.

8. The high heat dissipation type power switch cabinet contact according to claim 7, characterized in that: The contact comprises a contact body, the rear end of the contact body is provided with a first contact end cooperating with an external busbar, and the front end is provided with a second contact end cooperating with a metal plug-in; the contact body is provided with a first anti-mistake positioning hole cooperating with a first boss and a second anti-mistake positioning hole cooperating with a second boss.

9. The high heat dissipation type power switch cabinet contact according to claim 1, characterized in that: The contact piece is in surface contact with the external busbar, and the length and width of the transverse contact surface are greater than the thickness of the contact piece.

10. The high heat dissipation type power switch cabinet contact according to any one of claims 1 to 9, characterized in that: The contact pieces located on the same side are of an integrated structure or a split structure.

Images