CN221596357U - Double-contact device of movable solid cabinet - Google Patents
Double-contact device of movable solid cabinet Download PDFInfo
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- CN221596357U CN221596357U CN202323297789.5U CN202323297789U CN221596357U CN 221596357 U CN221596357 U CN 221596357U CN 202323297789 U CN202323297789 U CN 202323297789U CN 221596357 U CN221596357 U CN 221596357U
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- 239000007787 solid Substances 0.000 title claims abstract description 32
- 230000009977 dual effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses a double-contact device of a movable solid cabinet, which belongs to the technical field of high-current electricity and comprises a main contact, wherein a first conductive contact surface is arranged on the main contact and is electrically connected with a contact arm of a circuit breaker to form a first connecting circuit; the main contact is provided with a second conductive contact surface which is electrically connected with the contact arm contact of the circuit breaker to form a second connecting circuit; the first connecting circuit is connected with the second connecting circuit in parallel, so that the contact resistance between the main contact and the contact arm of the circuit breaker is reduced. According to the utility model, the first conductive contact surface and the second conductive contact surface are respectively connected with the circuit breaker contact arm to form two contact resistances which are parallel resistances, so that the total contact resistance with the circuit breaker contact arm is reduced, and the temperature rise of the contact resistances is reduced.
Description
Technical Field
The utility model belongs to the technical field of high-current electricity, and particularly relates to a double-contact device of a movable solid cabinet.
Background
The contact means is a hand-held rod-like electrode mounted on a flexible cable for conducting magnetizing current from a power source to a portion of the test piece. The contact material can be divided into three types of a disconnectable contact, a sliding contact and a fixed contact, and is widely applied to main conductive contact materials of switching devices such as relays, contactors, load switches, medium-low voltage circuit breakers, household appliances, automobile appliances (horns, car lights, ignition) and the like.
At present, the contacts of KYN28A-12 master-unit cabinet high-current equipment in the market adopt plum blossom contacts 82 pieces which are connected with a contact arm of a circuit breaker, and the resistance of the connection part is about 3 mu omega, so that the resistance is larger, the temperature rise is higher, and the installation is difficult.
Therefore, there is a need to design a dual-contact device of a removable solid cabinet, which solves the problems of large resistance, high temperature and difficult installation at the contact arm connection of the circuit breaker.
Disclosure of utility model
In order to solve the technical problems that the junction between the plum blossom contact 82 pieces and the contact arm of the circuit breaker is large in resistance, high in temperature and difficult to install in the background art, the double-contact device of the movable solid cabinet is provided, so that the problems that the junction is large in resistance, high in temperature and difficult to install are solved.
In order to achieve the above purpose, the specific technical scheme of the double-contact device of the movable solid cabinet is as follows:
The double-contact device of the movable solid cabinet comprises a main contact, wherein a first conductive contact surface is arranged on the main contact, and the first conductive contact surface is electrically connected with a contact arm contact of a circuit breaker to form a first connecting circuit;
The main contact is provided with a second conductive contact surface which is electrically connected with the contact arm contact of the circuit breaker to form a second connecting circuit;
the first connecting circuit is connected with the second connecting circuit in parallel, so that the contact resistance between the main contact and the contact arm of the circuit breaker is reduced.
Further, the second conductive contact surface is provided with a first watchband contact finger, and the second conductive contact surface is electrically connected with the contact arm of the circuit breaker through the first watchband contact finger.
Further, the first conductive contact surface is provided with a chamfer, so that the contact pressure between the first conductive contact surface and the contact arm of the circuit breaker is improved.
Further, one end of the main contact, which is far away from the breaker contact arm, is electrically connected with the outlet sleeve, so that the breaker contact arm is electrically connected with the outlet sleeve.
Further, a third connecting circuit and a fourth connecting circuit are arranged at the junction of the wire outlet sleeve, and the third connecting circuit is connected with the fourth connecting circuit in parallel, so that the contact resistance between the main contact and the wire outlet sleeve is reduced.
Further, the third connecting circuit comprises an auxiliary contact, the auxiliary contact is electrically connected with the main contact, a conductive end face is arranged on the auxiliary contact, and the conductive end face is electrically connected with the outgoing line sleeve.
Further, a second watchband contact finger is arranged on the auxiliary contact, and the auxiliary contact is electrically connected with the main contact through the second watchband contact finger.
Further, a cavity is formed in the main contact, and the main contact is sleeved with the auxiliary contact through the cavity.
Further, the fourth connection circuit comprises a third conductive contact surface, the third conductive contact surface is arranged on the outer side of the main contact far away from the first conductive contact surface, and the third conductive contact surface is electrically connected with the wire outlet sleeve.
Further, a third watchband contact finger is arranged on the third conductive contact surface, and the third conductive contact surface is in contact with the outgoing line sleeve through the third watchband contact finger for electric connection.
The double-contact device of the movable solid cabinet has the following advantages: the contact part of the double-contact device of the movable solid cabinet and the contact arm of the circuit breaker is in compound connection, the contact part is connected with the contact arm of the circuit breaker through the first conductive contact surface and the second conductive contact surface respectively to form two contact resistances, and the two contact resistances are parallel resistances, so that the total contact resistance of the contact device and the contact arm of the circuit breaker is reduced, the temperature rise of the contact device is reduced, and the equipment runs more safely.
The double-contact device of the movable solid cabinet uses the watchband contact fingers to be respectively connected with the contact arm and the outgoing line sleeve of the circuit breaker, is easy to install, stable in current transmission and improves the assembly efficiency.
Drawings
FIG. 1 is a schematic view of a two-contact installation of a mobile solids cabinet of the present utility model;
FIG. 2 is a schematic view of the dual contact apparatus of the removable solid cabinet of the present utility model;
FIG. 3 is a cross-sectional view of a two-contact device connection of a mobile solids cabinet of the utility model;
The figure indicates: 1. a circuit breaker trolley; 2. a circuit breaker; 201. a breaker contact arm; 3. a double contact device of a removable solid cabinet; 301. a main contact; 302. a secondary contact; 303. a first conductive contact surface; 304. a second conductive contact surface; 305. a third conductive contact surface; 306. a first watchband contact finger; 307. a second watchband contact finger; 308. a third watchband contact finger; 309. a cavity; 310. a conductive end face; 4. and a wire outlet sleeve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present utility model, 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 utility model will be understood in specific cases by those of ordinary skill in the art. In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The double contact device of the mobile solid cabinet of the present utility model is described below with reference to fig. 1 to 3.
As shown in fig. 1 and fig. 3, the double-contact device 3 of the removable solid cabinet provided by the embodiment of the utility model is respectively connected with the outlet sleeve 4 and the circuit breaker contact arm 201 on the circuit breaker 2, and the circuit breaker 2 is connected with the circuit breaker handcart 1, so that the stability of current is ensured.
The existing contact device mostly adopts that the quincuncial contacts 82 are connected with the circuit breaker contact arms 201, the resistance of the connection part is about 3 mu omega, the resistance of the connection part is larger, the temperature rise is higher, and the installation is not easy.
Example 1:
As shown in fig. 2 and fig. 3, the double-contact device 3 of the removable solid cabinet provided by the embodiment of the utility model includes a main contact 301, a first conductive contact surface 303 is disposed on the main contact 301, and the first conductive contact surface 303 is in contact with a contact arm 201 of a circuit breaker to be electrically connected, so as to form a first connection circuit; the main contact 301 is provided with a second conductive contact surface 304, and the second conductive contact surface 304 is in contact with the contact arm 201 of the circuit breaker to be electrically connected to form a second connection circuit; the first connection circuit is connected in parallel with the second connection circuit, and the contact resistance on the first connection circuit and the contact resistance on the second connection circuit form a parallel resistance, so that the contact resistance between the main contact 301 and the breaker contact arm 201 is reduced.
As shown in fig. 2, the first conductive contact surface 303 is chamfered so that the first conductive contact surface 303 is in close contact with the breaker contact arm 201. The chamfer structure of the first conductive contact surface 303 not only compensates the position tolerance of the main contact 301 and the circuit breaker contact arm 201, and is convenient for the connection between the main contact 301 and the circuit breaker contact arm 201, thereby reducing the installation difficulty, but also improves the contact pressure between the first conductive contact surface 303 and the circuit breaker contact arm 201, and reduces the contact resistance at the position to make the contact resistance tend to be stable.
The second conductive contact surface 304 is provided with a first watchband contact finger 306, the second conductive contact surface 304 is electrically connected with the circuit breaker contact arm 201 through the first watchband contact finger 306 in a contact mode, the main contact 301 realizes stable current transmission with the circuit breaker contact arm 201 through multipoint contact of the watchband contact finger, stability of the device is improved, and installation and disassembly are facilitated.
The end of the main contact 301, which is far away from the breaker contact arm 201, is electrically connected with the outlet sleeve 4, so that the breaker contact arm 201 is electrically connected with the outlet sleeve 4.
The contact resistance between the first watchband contact finger 306 and the circuit breaker contact arm 201 is about 2.2 mu omega, the contact resistance between the first conductive contact surface 303 and the circuit breaker contact arm 201 is about 3.5 mu omega, and the resistance after the first watchband contact finger and the circuit breaker contact arm are connected in parallel is 1.35 mu omega, so that the contact resistance when the double-contact device 3 of the movable solid cabinet is connected with the circuit breaker contact arm 201 is greatly reduced, the temperature rise at the contact point is reduced, and the equipment is enabled to run more safely.
The double-contact device 3 of the movable solid cabinet provided by the embodiment of the utility model has low resistance and slow temperature rise, the service life of the device is prolonged, and the manner of connecting the watchband contact finger with the circuit breaker contact arm 201 is simpler and more efficient in installation.
Example 2:
The structure of the end of the circuit breaker contact arm 201 in this embodiment is the same as that of embodiment 1, and will not be described here again.
To further achieve a reduction of the total contact resistance of the double contact arrangement 3 of the mobile solids cabinet, the structure of the double contact arrangement 3 of the mobile solids cabinet at the end connected to the outlet sleeve 4 is further optimized.
As shown in fig. 3, the junction of the outlet sleeve 4 is provided with a third connection circuit and a fourth connection circuit, the third connection circuit is connected in parallel with the fourth connection circuit, and the contact resistance on the third connection circuit and the contact resistance on the fourth connection circuit form a parallel resistance together, so that the contact resistance between the main contact 301 and the outlet sleeve 4 is reduced, the temperature rise at the junction is reduced, and the service life of the device is prolonged.
The third connection circuit comprises a secondary contact 302, the secondary contact 302 is electrically connected with the primary contact 301, a conductive end face 310 is arranged on the secondary contact 302, the conductive end face 310 is electrically connected with the wire outlet sleeve 4, and a contact resistance for connecting the conductive end face 310 with the wire outlet sleeve 4 is formed.
The main contact 301 is provided with the cavity 309, and the main contact 301 is sleeved with the auxiliary contact 302 through the cavity 309, so that the assembly of the main contact 301 and the auxiliary contact 302 is facilitated, materials are saved, and the cost is reduced.
The chamfer of the opposite surface of the conductive end surface 310 of the auxiliary contact 302 compensates the position tolerance of the main contact 301 and the auxiliary contact 302 during sleeving, and further improves the assembly efficiency.
The secondary contact 302 is provided with a second watchband contact finger 307, the secondary contact 302 is electrically connected with the primary contact 301 through the second watchband contact finger 307, the energy transmission efficiency is improved, and the contact resistance of the primary contact 301 and the secondary contact 302 is reduced.
The fourth connection circuit comprises a third conductive contact surface 305, the third conductive contact surface 305 is arranged on the outer side of the main contact 301 far away from the first conductive contact surface 303, the third conductive contact surface 305 is electrically connected with the outlet sleeve 4, and a contact resistance for connecting the third conductive contact surface 305 with the outlet sleeve 4 is formed.
The third conducting contact surface 305 is provided with a third watchband contact finger 308, the third conducting contact surface 305 is in contact with the outlet sleeve 4 through the third watchband contact finger 308 for electric connection, the contact resistance between the third conducting contact surface 305 and the outlet sleeve 4 is reduced, the energy transmission efficiency is improved, and the installation of the double-contact device 3 of the movable solid cabinet and the outlet sleeve 4 is also facilitated.
The double-contact device 3 of the movable solid cabinet is connected in parallel with the second connecting circuit through the first connecting circuit, so that the contact resistance of the double-contact device with the contact arm 201 of the circuit breaker is reduced, and the contact resistance of the double-contact device with the outlet sleeve 4 is reduced through the third connecting circuit and the fourth connecting circuit. Under the combined action of the first connecting circuit, the second connecting circuit, the third connecting circuit and the fourth connecting circuit, the whole contact resistance of the double-contact device 3 of the movable solid cabinet when being connected with the circuit breaker contact arm 201 and the outgoing line sleeve 4 is reduced, so that the temperature rise of the double-contact device 3 of the movable solid cabinet in use is further reduced, and the service life and reliability of the device are improved.
The double-contact device 3 of the movable solid cabinet is connected with the circuit breaker contact arm 201 and the outlet sleeve 4 by using watchband contact fingers, is easy to install, stable in current transmission and improves assembly efficiency.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. 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. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. The double-contact device of the movable solid cabinet is characterized by comprising a main contact, wherein a first conductive contact surface is arranged on the main contact and is electrically connected with a contact arm of a circuit breaker to form a first connecting circuit;
The main contact is provided with a second conductive contact surface which is electrically connected with the contact arm contact of the circuit breaker to form a second connecting circuit;
the first connecting circuit is connected with the second connecting circuit in parallel, so that the contact resistance between the main contact and the contact arm of the circuit breaker is reduced.
2. The dual contact apparatus of claim 1, wherein the second conductive contact surface is provided with a first strap contact finger, the second conductive contact surface being electrically connected to the circuit breaker contact arm via the first strap contact finger.
3. The dual contact apparatus of a removable solid state cabinet of claim 1, wherein the first conductive contact surface is chamfered to increase contact pressure between the first conductive contact surface and the contact arm of the circuit breaker.
4. The dual contact apparatus of claim 1, wherein an end of the main contact remote from the breaker contact arm is electrically connected to the outlet bushing such that the breaker contact arm is electrically connected to the outlet bushing.
5. The double contact device of a removable solid cabinet according to claim 4, wherein a third connection circuit and a fourth connection circuit are arranged at the junction of the outlet sleeve, and the third connection circuit is connected with the fourth connection circuit in parallel, so that the contact resistance between the main contact and the outlet sleeve is reduced.
6. The dual contact apparatus of claim 5, wherein the third connection circuit comprises a secondary contact electrically connected to the primary contact, the secondary contact having a conductive end surface electrically connected to the outlet sleeve.
7. The dual contact apparatus of a mobile solids tank as defined in claim 6 wherein the secondary contact is provided with a second watchband contact finger and the secondary contact is electrically connected to the primary contact by the second watchband contact finger.
8. The dual contact apparatus of a portable solids cabinet in accordance with claim 6 wherein the primary contact has a cavity through which the primary contact is mated with the secondary contact.
9. The dual contact apparatus of claim 5, wherein the fourth connection circuit includes a third conductive contact surface disposed on an outer side of the main contact remote from the first conductive contact surface, the third conductive contact surface being electrically connected to the outlet sleeve.
10. The dual contact apparatus of claim 9, wherein a third watchband contact finger is disposed on the third conductive contact surface, and the third conductive contact surface is electrically connected to the outlet sleeve by contacting the third watchband contact finger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323297789.5U CN221596357U (en) | 2023-12-05 | 2023-12-05 | Double-contact device of movable solid cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323297789.5U CN221596357U (en) | 2023-12-05 | 2023-12-05 | Double-contact device of movable solid cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221596357U true CN221596357U (en) | 2024-08-23 |
Family
ID=92407479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323297789.5U Active CN221596357U (en) | 2023-12-05 | 2023-12-05 | Double-contact device of movable solid cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221596357U (en) |
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2023
- 2023-12-05 CN CN202323297789.5U patent/CN221596357U/en active Active
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