CN108198704B - Contact structure and switch cabinet using same - Google Patents
Contact structure and switch cabinet using same Download PDFInfo
- Publication number
- CN108198704B CN108198704B CN201810031296.1A CN201810031296A CN108198704B CN 108198704 B CN108198704 B CN 108198704B CN 201810031296 A CN201810031296 A CN 201810031296A CN 108198704 B CN108198704 B CN 108198704B
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- contact
- clamping plate
- seat
- supporting seat
- base
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- 230000003068 static effect Effects 0.000 claims abstract description 19
- 230000003044 adaptive effect Effects 0.000 claims abstract description 12
- 230000006978 adaptation Effects 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 14
- 230000037431 insertion Effects 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 description 6
- 241000405070 Percophidae Species 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
Abstract
The invention relates to the field of distribution equipment, in particular to a contact structure and a switch cabinet using the same. The contact structure includes the base, rotates on the base to be equipped with the supporting seat, and the swing is equipped with the contact seat on the supporting seat, is equipped with on the contact seat to be used for with the grafting structure of adaptation contact grafting complex, and the supporting seat has the contained angle for the rotation axis of base and the swing axis of contact seat for the supporting seat, the contact seat for the swing axis of supporting seat with grafting direction of grafting structure has the contained angle. Compared with the existing matching error of the movable contact and the static contact only through the elastic contact fingers assembled on the contact seat, the contact seat of the contact structure can adapt to the larger installation error of the adaptive contact through the rotation of the supporting seat relative to the base and the swinging of the supporting seat relative to the supporting seat, and the problem that the existing movable contact and the static contact cannot be normally closed when the larger installation error exists is solved.
Description
Technical Field
The invention relates to the field of distribution equipment, in particular to a contact structure and a switch cabinet using the same.
Background
In a medium-voltage distribution network system, the movable metal closed switch cabinet is widely applied, the switch cabinet comprises a cabinet body and a handcart, the cabinet body is connected with the handcart through an isolation contact, and the current common isolation contacts comprise a plum blossom contact, a duckbill contact and a spring contact finger connection type contact. The contact comprises a plurality of contact fingers, an inner ring is supported by a frame, and an outer ring is fastened and fixed by a spring. The contact can contain quantitative matching errors in all directions between the handcart and the cabinet body, and the contact pressing force between the moving contact and the static contact is ensured by the outer ring spring. Duckbilled contacts are less applied to a movable switch cabinet at present, the duckbilled contacts are supported by a frame and tensioned by a spring, and the duckbilled contacts can contain quantitative errors in the direction of parts between a handcart and a cabinet body. The spring contact finger connecting type contact has fewer applications in the withdrawable switch cabinet, has a simple structure, and can contain quantitative errors in the direction of the part between the handcart and the cabinet body. The three contacts can only allow errors to be limited to the matching errors of the moving contact and the fixed contact, the error allowance range is small, and the contact structure can not guarantee the normal closing of the moving contact and the fixed contact when a large installation error exists between the handcart and the switch cabinet.
Disclosure of Invention
The invention aims to provide a contact structure, which aims to solve the problem that the existing moving contact and static contact cannot be normally closed when large installation errors exist; in addition, the invention also aims to provide a switch cabinet using the contact structure.
In order to achieve the above object, a first technical solution of the contact structure of the present invention is: the contact structure includes the base, rotates on the base to be equipped with the supporting seat, and the swing is equipped with the contact seat on the supporting seat, is equipped with on the contact seat to be used for with the grafting structure of adaptation contact grafting complex, and the supporting seat has the contained angle for the rotation axis of base and the swing axis of contact seat for the supporting seat, the contact seat for the swing axis of supporting seat with grafting direction of grafting structure has the contained angle.
The second technical scheme of the contact structure of the invention is as follows: on the basis of the first technical scheme of the contact structure, the rotation axis of the supporting seat relative to the base is perpendicular to the swinging axis of the contact seat relative to the supporting seat, and the swinging axis of the contact seat relative to the supporting seat is perpendicular to the plugging direction of the plugging structure. The arrangement of the contact structure is convenient, and meanwhile, the contact structure can adapt to installation errors of more conditions.
The third technical scheme of the contact structure of the invention is as follows: on the basis of the first technical scheme of the contact structure, the contact seat comprises a bracket, a first clamping plate and a second clamping plate, wherein the first clamping plate and the second clamping plate are assembled on the bracket in a swinging mode; the contact seat also comprises an elastic holding structure for holding the first clamping plate and the second clamping plate close to each other, and the insertion structure is enclosed by one ends of the first clamping plate and the second clamping plate, which are far away from the supporting seat. The contact seat formed by the two clamping plates is convenient to process, and the two clamping plates can enable the inserting structure formed by the two clamping plates to adapt to larger installation errors through the elastic retaining structure.
The fourth technical scheme of the contact structure of the invention is as follows: on the basis of the third technical scheme of the contact structure, the elastic holding structure comprises a pull rod which is arranged on the first clamping plate and the second clamping plate in a penetrating mode, elastic holding pieces which are positioned on the outer sides of the first clamping plate and the second clamping plate are arranged at two ends of the pull rod, and the first clamping plate and the second clamping plate are kept close to each other through the elastic holding pieces. Through the cooperation of the pull rod and the elastic retaining piece, the inserting structure formed by the first clamping plate and the second clamping plate can be ensured to clamp the adaptive contact, and the first clamping plate and the second clamping plate can be ensured to be restrained by the pull rod in the moving process.
The fifth technical scheme of the contact structure of the invention is as follows: on the basis of the fourth technical scheme of the contact structure, the pull rod is sleeved with a positioning sleeve between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are pressed at two ends of the positioning sleeve through the elastic holding pieces. The locating sleeve can prevent the first clamping plate and the second clamping plate from being excessively close to influence the insertion of the adaptive contact.
The sixth technical scheme of the contact structure of the invention is as follows: on the basis of the third, fourth or fifth technical solution of the contact structure of the present invention, the plug structure includes plug contact fingers respectively disposed on the first clamping plate and the second clamping plate for electrically contacting with the mating contact. The plug contact fingers are in conductive contact with the adaptive contacts, so that the conductive performance can be guaranteed, and certain quantitative errors can be adapted.
The seventh technical scheme of the contact structure of the invention is as follows: on the basis of the third, fourth or fifth technical scheme of the contact structure, the supporting seat comprises a contact seat matching part matched with the contact seat, the contact seat matching part is clamped between the two clamping plates, supporting seat contact fingers in conductive contact with the contact seat matching part are arranged on the opposite surfaces of the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are in conductive connection with the supporting seat through the supporting seat contact fingers. The contact seat matching part is clamped between the two clamping plates, so that the stability of electric connection of the contact seat matching part can be ensured. In addition, in another technical scheme with the locating sleeve, the locating sleeve can prevent the excessive acting force between the two clamping plates and the contact seat matching part from damaging the supporting seat or the clamping plates and possibly the supporting seat contact fingers on the supporting seat.
The eighth technical scheme of the contact structure of the invention is as follows: on the basis of the seventh technical scheme of the contact structure, the support comprises three swinging shafts which are arranged in parallel at intervals, wherein the swinging shaft in the middle is in swinging fit with the supporting seat, the swinging shafts on two sides are in swinging fit with the first clamping plate and the second clamping plate respectively, and the supporting seat contact finger is positioned between the two swinging shafts on the first clamping plate and the second clamping plate. The structure of the support is simplified, and the supporting seat contact fingers are located between the two swing shafts, so that the stability of the supporting seat contact fingers in electric connection with the supporting seat can be guaranteed, and the large change of the conductive contact area between the supporting seat contact fingers and the supporting seat is avoided.
The ninth technical scheme of the contact structure of the invention is as follows: on the basis of any one of the first to fifth technical solutions of the contact structure of the present invention, the base is provided with a self-resetting elastic element for applying a self-resetting acting force to the supporting seat. After the contact structure is separated from the adaptive contact, the supporting seat can return to the initial position.
The tenth technical scheme of the contact structure of the invention is as follows: on the basis of the ninth technical scheme of the contact structure, the base is provided with a limiting structure which is used for being matched with the base in a blocking mode after the supporting seat rotates for a set angle. The supporting seat can rotate in a certain angle range relative to the base.
The eleventh technical scheme of the contact structure of the invention is as follows: on the basis of the tenth technical scheme of the contact structure, the base comprises a sleeve, the supporting seat comprises a base matching part inserted in the sleeve and a contact seat matching part extending out of the sleeve, the supporting seat is in rotating fit with the sleeve through the base matching part, one end, close to the sleeve, of the contact seat matching part is of a non-revolving body structure, the limiting structure comprises two limiting plates which are arranged on the sleeve at intervals and close to one port edge of the contact seat, one end, close to the sleeve, of the contact seat matching part is located between the two limiting plates, and the limiting plates are in blocking fit with the base matching part in the axial direction of the sleeve. The rotation stopping matching of the limiting plate and the contact seat matching part is achieved, the structure is simple, and the limiting plate can limit the base matching part from being separated from the sleeve.
The twelfth technical scheme of the contact structure of the invention is as follows: on the basis of the eleventh technical scheme of the contact structure, the self-resetting elastic element is a plate spring fixed on the limiting plate, and the plate spring is arranged between the base and the contact seat.
The thirteenth technical scheme of the contact structure of the invention is as follows: on the basis of any one of the first to fifth technical solutions of the contact structure of the present invention, the contact structure is a stationary contact.
In order to achieve the above object, a first technical solution of the switch cabinet of the present invention is: the switch cabinet comprises a contact structure and an adaptive contact matched with the contact structure, the contact structure comprises a base, a supporting seat is assembled on the base in a rotating mode, a contact seat is assembled on the supporting seat in a swinging mode, an inserting connection structure matched with the adaptive contact in an inserting mode is arranged on the contact seat, the supporting seat has an included angle relative to the rotating axis of the base and the swinging axis of the contact seat relative to the supporting seat, and the included angle is formed between the swinging axis of the contact seat and the inserting connection direction of the inserting connection structure.
The second technical scheme of the switch cabinet is as follows: on the basis of the first technical scheme of the switch cabinet, the rotating axis of the supporting seat relative to the base is perpendicular to the swinging axis of the contact seat relative to the supporting seat, and the swinging axis of the contact seat relative to the supporting seat is perpendicular to the plugging direction of the plugging structure.
The third technical scheme of the switch cabinet is as follows: on the basis of the first technical scheme of the switch cabinet, the contact seat comprises a bracket, a first clamping plate and a second clamping plate, wherein the first clamping plate and the second clamping plate are assembled on the bracket in a swinging mode; the contact seat also comprises an elastic holding structure for holding the first clamping plate and the second clamping plate close to each other, and the insertion structure is enclosed by one ends of the first clamping plate and the second clamping plate, which are far away from the supporting seat.
The fourth technical scheme of the switch cabinet is as follows: on the basis of the third technical scheme of the switch cabinet, the elastic holding structure comprises a pull rod which is arranged on the first clamping plate and the second clamping plate in a penetrating mode, elastic holding pieces which are positioned on the outer sides of the first clamping plate and the second clamping plate are arranged at two ends of the pull rod, and the first clamping plate and the second clamping plate are kept close to each other through the elastic holding pieces.
The fifth technical scheme of the switch cabinet is as follows: on the basis of the fourth technical scheme of the switch cabinet, the pull rod is sleeved with the positioning sleeve between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are pressed at two ends of the positioning sleeve through the elastic retaining pieces.
The sixth technical scheme of the switch cabinet is as follows: on the basis of the third, fourth or fifth technical solution of the switch cabinet of the present invention, the plug structure includes plug contact fingers respectively disposed on the first clamping plate and the second clamping plate for electrically contacting with the mating contacts.
The seventh technical scheme of the switch cabinet is as follows: on the basis of the third, fourth or fifth technical scheme of the switch cabinet, the supporting seat comprises a contact seat matching part matched with the contact seat, the contact seat matching part is clamped between the two clamping plates, supporting seat contact fingers in conductive contact with the contact seat matching part are arranged on the opposite surfaces of the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are in conductive connection with the supporting seat through the supporting seat contact fingers.
The eighth technical scheme of the switch cabinet is as follows: on the basis of the seventh technical scheme of the switch cabinet, the support comprises three swing shafts which are arranged in parallel at intervals, wherein the swing shaft in the middle is in swing fit with the support seat, the swing shafts on two sides are in swing fit with the first clamping plate and the second clamping plate respectively, and the support seat contact finger is positioned on the first clamping plate and the second clamping plate and is positioned between the two swing shafts.
The ninth technical scheme of the switch cabinet is as follows: on the basis of any one of the first to fifth technical solutions of the switch cabinet of the present invention, the base is provided with a self-resetting elastic element for applying a self-resetting acting force to the supporting seat.
The tenth technical scheme of the switch cabinet is as follows: on the basis of the ninth technical scheme of the switch cabinet, the base is provided with a limit structure which is used for being matched with the base in a stop manner after the supporting seat rotates for a set angle.
The eleventh technical scheme of the switch cabinet is as follows: on the basis of the tenth technical scheme of the switch cabinet, the base comprises a sleeve, the supporting seat comprises a base matching part inserted in the sleeve and a contact seat matching part extending out of the sleeve, the supporting seat is in rotating matching with the sleeve through the base matching part, one end, close to the sleeve, of the contact seat matching part is of a non-revolving body structure, the limiting structure comprises two limiting plates which are arranged on the sleeve at intervals and close to one port edge of the contact seat, one end, close to the sleeve, of the contact seat matching part is located between the two limiting plates, and the limiting plates are in blocking matching with the base matching part in the axial direction of the sleeve.
The twelfth technical scheme of the switch cabinet is as follows: on the basis of the eleventh technical scheme of the switch cabinet, the self-resetting elastic element is a plate spring fixed on the limiting plate, and the plate spring is arranged between the base and the contact seat.
The thirteenth technical scheme of the switch cabinet is as follows: on the basis of any one of the first to fifth technical solutions of the switch cabinet, the contact structure is a fixed contact, and the adaptive contact is a moving contact.
The invention has the beneficial effects that: the contact structure comprises a base, wherein a supporting seat is rotatably assembled on the base, a contact seat is arranged on the supporting seat in a swinging mode, the supporting seat can rotate relative to the base, and compared with the existing method that the matching error of a moving contact and a static contact is only adapted through an elastic contact finger assembled on the contact seat, the contact seat of the contact structure can adapt to the larger installation error of an adaptive contact through the rotation of the supporting seat relative to the base and the swinging of the supporting seat relative to the supporting seat, and the problem that the existing moving contact and the static contact cannot be normally closed when the larger installation error exists is solved.
Drawings
Fig. 1 is a schematic state diagram of a fixed contact and a movable contact in an insertion connection manner according to an embodiment 1 of the contact structure of the present invention;
fig. 2 is a schematic state diagram of another view angle when the fixed contact and the movable contact of the embodiment 1 of the contact structure of the present invention are plugged;
fig. 3 is a schematic view of the assembly structure of the base and the support base of embodiment 1 of the contact structure of the present invention;
fig. 4 is a schematic structural view of a support base according to embodiment 1 of the contact structure of the present invention;
fig. 5 is a schematic view of the structure of the base of embodiment 1 of the contact structure of the present invention;
fig. 6 is a schematic view of the states of two position restricting plates of the specific embodiment 1 of the contact structure of the present invention;
FIG. 7 is a schematic view of the support block and the contact block of embodiment 1 of the contact structure of the present invention;
fig. 8 is a schematic view of a first clamp plate structure of embodiment 1 of the contact structure of the present invention;
fig. 9 is a schematic view of the structure of the carrier of embodiment 1 of the contact structure of the present invention;
fig. 10 is a schematic diagram of the plugging state of the fixed contact and the movable contact of the embodiment 1 of the contact structure of the present invention;
fig. 11 is a schematic structural view of a movable contact of embodiment 1 of the contact structure of the present invention;
figure 12 is a cross-sectional view of a contact block of embodiment 1 of the contact structure of the present invention;
fig. 13 is a partial schematic view of embodiment 1 of the contact structure of the present invention;
fig. 14 is a structural schematic view of a plate spring of embodiment 1 of the contact structure of the present invention;
figure 15 is a schematic view of the contact block of embodiment 4 of the contact structure of the present invention;
fig. 16 is a schematic cross-sectional view of the first clamping plate and the second clamping plate of embodiment 5 of the contact structure of the present invention;
fig. 17 is a schematic view of the first clamp plate of embodiment 6 of the contact structure of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In embodiment 1 of the contact structure of the present invention, the contact structure in this embodiment is a fixed contact fixed in a contact box of a switch cabinet and adapted to a handcart. As shown in fig. 1 and 2, the contact structure includes a base 1, a support base 2 is rotatably mounted on the base 1, and a contact block 3 is swingably mounted on the support base 2. The supporting seat 2 is perpendicular to the swing axis of the contact seat 3 relative to the supporting seat 2 relative to the rotation axis of the base 1, and the contact seat 3 is perpendicular to the plugging direction of the plugging structure relative to the swing axis of the supporting seat 2. The contact seat is electrically connected with the supporting seat, the supporting seat is electrically connected with the external electric connection in a fixed connection mode of fastening a flexible connection end, and in other embodiments, the supporting seat is electrically connected with the external electric connection in a mode of electrically connecting the spring contact finger and the watchband contact finger with the base.
In the embodiment, as shown in fig. 3, the base 1 includes a sleeve 11 and two limiting plates 12 spaced apart from each other on the sleeve 11 and near a port edge of the contact block 3. The two limit plates 12 are detachably fixed on the sleeve 11 by screws, and the end of the sleeve 11 is provided with a sleeve fixing hole 112. The limiting plate 12 is provided with a limiting plate fixing hole 122 corresponding to the sleeve fixing hole.
As shown in fig. 3 and 4, the supporting seat 2 includes a base engaging portion 21 engaged with the base 1 in the sleeve 11 and a contact seat engaging portion 22 extending out of the sleeve 11, in this embodiment, the base engaging portion 21 is a cylindrical structure, and the base engaging portion 21 is rotatably fitted in the sleeve 11. The cross section of the contact seat matching part 22 close to one end of the sleeve 11 is square and is positioned between the two limiting plates 12, after the supporting seat 2 rotates for a certain angle, one end of the contact seat matching part 22 close to the sleeve 11 is in stop matching with the two limiting plates 12, and the limiting plates 12 limit the rotating range of the supporting seat 2. In other embodiments, the end of the contact block mating portion close to the sleeve is in other non-rotating body structures, and the cross section of the end of the contact block mating portion close to the sleeve can be in other non-circular structures such as an ellipse.
As shown in fig. 5, a limiting flange 111 for limiting the axial position of the supporting seat 2 along the sleeve 11 is disposed at an end of the sleeve 11 away from the contact seat 3, and the limiting flange 111 cooperates with the limiting plate 12 to limit the supporting seat 2 from leaving the sleeve 11.
As shown in fig. 2 and 6, a plate spring 13 for applying a self-resetting force to the support base 2 and the contact base 3 is fixed on the limit plate 12, and the plate spring 13 constitutes a self-resetting elastic member for applying a self-resetting force to the support base 2 and the contact base 3 on the base 1. In this embodiment, the limiting plate 12 is provided with a fixing hole 121, one end of the plate spring 13 passes through the fixing hole 121 and is pressed between the limiting plate 12 and the supporting seat 2, and the other end is clamped on the contact seat 3. The number of the plate springs 13 is two, and the two plate springs 13 are correspondingly arranged on the two limit plates 12 respectively. After the contact seat 3 swings around the base 1, the plate spring 13 deforms and stores energy, and after the moving contact 4 is separated from the static contact, the contact seat 3 and the supporting seat 2 are both reset to the original positions under the action of the plate spring 13. As shown in fig. 13 and 14, the plate spring in this embodiment is a bent spring steel, and one end of the bent spring steel is bent and pressed under the limit plate to be fixed with the limit plate; one end of the contact seat is bent and lapped on the contact seat to provide the reset force of the contact seat and the supporting seat.
In this embodiment, as shown in fig. 1, 7 and 9, the contact holder 3 includes a support 31, the support 31 includes two support plates 311, a first swing shaft 312, a second swing shaft 313 and a third swing shaft 314 are disposed in parallel between the two support plates 311, the second swing shaft 313 is located in the middle, and the second swing shaft 313 is equidistant from the first swing shaft 312 and the third swing shaft 314. The three swing shafts are fixedly connected with the support plate 311, in this embodiment, the support plate 311 is riveted with the three swing shafts, and in other embodiments, the support plate 311 is connected with the three swing shafts through bolts. The contact block engagement portion 22 of the support block 2 is fitted over the second swing shaft 313 and is in swing engagement with the second swing shaft 313. The first swing shaft 312 and the third swing shaft 314 are respectively swing-fitted with a first bridge 32 and a second bridge 33 between which the contact block fitting portion 22 is sandwiched. The two clamping plates are provided with supporting seat contact fingers 34 on the opposite surfaces close to the contact seat matching part 22, the first clamping plate 32 and the second clamping plate 33 are electrically connected with the supporting seat 2 through the supporting seat contact fingers 34, and in the embodiment, the supporting seat contact fingers 34 are positioned between the two swinging shafts on the first clamping plate 32 and the second clamping plate 33. The supporting seat contact finger 34 in this embodiment is a watchband contact finger, and in other embodiments, a spring contact finger, a flexible connection and other conductive connection forms can be selected as needed. The support seat contact fingers 34 are pre-compressed under the action of the first clamping plate 32 and the second clamping plate 33 after being assembled on the clamping plates, so that the conductive contact area of the first clamping plate 32 and the second clamping plate 33 and the contact seat 3 on the support seat 2 is ensured. In addition, the rotation range of the supporting seat 2 is limited by the limiting plate 12, the distance between the first clamping plate 32 and one end of the second clamping plate 33 close to the base 1 is limited by the swinging shafts on two sides, and the distance between the first clamping plate 32 and the second clamping plate 33 can limit the swinging range of the contact block 3. The supporting seat and the contact seat in the embodiment are both composed of electric conductors.
As shown in fig. 7, the supporting seat arc surface 221 is disposed on the portion of the supporting seat 2 for electrically contacting the supporting seat contact finger 34, the supporting seat contact finger 34 is in a compressed working state after the assembly is completed, and when the contact block 3 swings, the supporting seat contact finger 34 slides on the supporting seat arc surface 221, the compression amount is kept unchanged, and the stability of the electrical connection between the supporting seat 2 and the contact block 3 is ensured. In addition, the normal sliding between the support seat contact finger 34 and the support seat 2 can be ensured in the relative swinging process of the support seat 2 and the contact seat 3, and the support seat contact finger 34 or the support seat 2 cannot be damaged.
In order to realize the insertion and engagement between the contact seat 3 and the movable contact 4, in this embodiment, the ends of the first clamping plate 32 and the second clamping plate 33, which are far away from the supporting seat 2, enclose an insertion and engagement structure 35 engaged with the movable contact 4 in an insertion and engagement manner. Two pull rods 36 are arranged at the middle positions of the first clamping plate 32 and the second clamping plate 33 in a penetrating mode, and the two pull rods 36 are arranged along the inserting direction perpendicular to the inserting structure, so that the swinging of the first clamping plate 32 and the second clamping plate 33 around the corresponding swinging shafts is not influenced. The two ends of the pull rod 36 are provided with the disc springs 37 at the opposite sides of the first clamping plate 32 and the second clamping plate 33, the first clamping plate 32 and the second clamping plate 33 are kept close to each other under the action of the disc springs 37, and meanwhile, contact pressure between the movable contact 4 and the plug structure 35 is provided, so that good electrical contact is ensured.
As shown in fig. 12, in this embodiment, one end of the pull rod is a cylindrical structure with a cap for mounting the disc spring, and the other end of the pull rod is provided with a gasket for limiting the disc spring.
The disc spring 37 and the pull rod 36 in this embodiment form an elastic holding structure of the contact block 3 for holding the first clamping plate 32 and the second clamping plate 33 close to each other, wherein the disc spring 37 forms an elastic holding member outside the first clamping plate 32 and the second clamping plate 33, and in other embodiments, the elastic holding member may also be a compression spring or a tension spring between the first clamping plate and the second clamping plate.
The pull rod 36 is sleeved with a positioning sleeve 38 positioned between the first clamping plate 32 and the second clamping plate 33, and the first clamping plate 32 and the second clamping plate 33 are pressed at two ends of the positioning sleeve 38 through disc springs. The plug-in structure 35, which ensures the plug-in fit with the movable contact 4 on the first clamping plate 32 and the second clamping plate 33, has a suitable size for the movable contact 4 to be inserted. In this embodiment, the inserting structure 35 includes inserting contact fingers 351 respectively disposed on the first clamping plate 32 and the second clamping plate 33 for electrically contacting with the movable contact 4, and the inserting contact fingers 351 in this embodiment are watchband contact fingers.
The first clamping plate 32 and the second clamping plate 33 of the invention are kept close to each other through the disc spring 37, and when the movable contact 4 is inserted into the inserting structure 35, the inserting contact finger 351 and the movable contact 4 are kept in stable electric connection under the action of the disc spring 37. In addition, the positioning sleeve is arranged on the pull rod 36, so that the problem that the movable contact 4 cannot be inserted due to too short distance between the ends of the first clamping plate 32 and the second clamping plate 33 far away from the swinging shaft can be prevented, and the problem that the supporting seat contact finger 34 is damaged due to too large acting force between the supporting seat contact finger 34 on the first clamping plate 32 and the second clamping plate 33 and the contact seat matching part 22 on the supporting seat 2 can be avoided.
The first clamping plate 32 and the second clamping plate 33 have the same structure, and only the specific structure of the first clamping plate 32 is specifically described here, as shown in fig. 8, a boss 321 protruding away from the second clamping plate 33 is provided on the first clamping plate 32, a swing shaft fitting hole 322 for fitting with the swing shaft in a swing manner is provided on the boss 321, a plate spring clamping surface 326 fitting with the plate spring 13 is provided on the first clamping plate 32, the plate spring clamping surface 326 is located on the side of the first clamping plate 32 away from the second clamping plate 33, and the plate spring clamping surface 326 is located on the side of the boss close to the base 1. One side of the first clamping plate 32 facing the second clamping plate 33 is provided with two contact finger installation grooves, one of the two contact finger installation grooves is a supporting seat contact finger installation groove 323, the other one is an insertion contact finger installation groove 324, the first clamping plate 32 is further provided with two pull rod through holes 325 for the pull rods 36 to pass through, and the two pull rods 36 are arranged in the pull rod through holes 325 in a penetrating manner.
In this embodiment, as shown in fig. 10 and 11, the movable contact 4 matched with the fixed contact includes a handcart connecting portion 41 used for being connected with a handcart, and the handcart connecting portion 41 is a cylindrical structure. Be equipped with the electrically conductive row 42 that the cross-section is the rectangle on the handcart connecting portion, the one end of keeping away from handcart connecting portion on electrically conductive row 42 is for inserting terminal 421 with grafting structure 35 grafting complex moving contact, and the terminal surface of moving contact terminal 421 is the rectangle, and the grafting section of moving contact 4 has necking down structure, guarantees that moving contact 4 and static contact are inserted and are closed the in-process and dodge contact seat 3, provides bigger swing space for contact seat 3.
The supporting seat 2 of the contact structure can rotate relative to the base 1, and the contact seat 3 can swing relative to the supporting seat 2, so that the contact structure forms a universal contact, when a matching error exists between a handcart and a switch cabinet body or between a moving contact and a static contact in the use process, the moving contact 4 is firstly pre-aligned with the inserting structure 35 on the static contact, and the static contact can adapt to the position of the moving contact 4 along with the continuous insertion of the moving contact 4, so that the normal insertion of the static contact and the moving contact 4 is ensured. The electric connection stability of the moving contact 4 and the static contact is ensured through the structure of the clamping plate type contact seat 3.
Embodiment 5 of the contact structure of the present invention, the contact structure in this embodiment differs from the embodiment of the contact structure described above only in that: as shown in fig. 16, in the present embodiment, the first clamping plate 532 and the second clamping plate 533 may be curved plates, and the curved plates are bent perpendicular to the plugging direction. The curved surface plate encloses an approximately circular insertion structure.
In the embodiment 6 of the duckbill contact of the present invention, the duckbill contact in this embodiment is different from the duckbill contact described in the embodiment 1 only in that: unlike the embodiment 1 described above in which an integrated clamp plate is used, as shown in fig. 17, in this embodiment, the first clamp plate 432 and the second clamp plate are stacked by the conductive finger piece 4321, and there is no need to provide a support contact value and a plug contact value.
In a specific embodiment of the switch cabinet, the switch cabinet includes a cabinet body, a contact box is arranged in the cabinet body, a static contact is fixed in the contact box, a circuit breaker handcart is also arranged in the cabinet body, and a moving contact matched with the static contact is arranged on the circuit breaker handcart, and structures of the moving contact and the static contact in the embodiment are the same as those of the moving contact and the static contact in any embodiment of specific embodiments 1-5 of the contact structure, and are not described again.
In the contact structure and other embodiments of the switch cabinet using the contact structure, the contact structure can also be a moving contact; the included angle between the rotating axis of the supporting seat relative to the base and the swinging axis of the contact seat relative to the supporting seat can be any angle between 0 degree and 90 degrees, and the included angle between the swinging axis of the contact seat relative to the supporting seat and the plugging direction of the plugging structure can be any angle between 0 degree and 90 degrees.
The contact seat matching part on the supporting seat can be in conductive connection with the contact seat through flexible connection, and at the moment, the three swinging shafts can be arranged in a triangular shape.
The positioning sleeve can be omitted, the protrusions abutted against each other are arranged on the opposite surfaces of the two clamping plates respectively, and the splicing structure formed by the clamping plates in a surrounding mode can be matched with the moving contact.
Claims (20)
1. Contact structure, its characterized in that: the device comprises a base, a supporting seat is rotatably assembled on the base, a contact seat is assembled on the supporting seat in a swinging mode, an inserting structure used for being matched with an adapter contact in an inserting mode is arranged on the contact seat, an included angle is formed between the rotating axis of the supporting seat and the swinging axis of the contact seat relative to the supporting seat, an included angle is formed between the swinging axis of the contact seat relative to the supporting seat and the inserting direction of the inserting structure, a self-resetting elastic piece used for applying self-resetting acting force to the supporting seat is arranged on the base, a limiting structure used for being matched with the base in a blocking mode after the supporting seat rotates for a set angle is arranged on the base, the base comprises a sleeve, the supporting seat comprises a base matching part inserted in the sleeve and a contact seat matching part extending out of the sleeve, the supporting seat is rotatably matched with the sleeve through, the limiting structure comprises two limiting plates which are arranged on the sleeve at intervals and close to one port edge of the contact seat, one end, close to the sleeve, of the contact seat matching part is located between the two limiting plates, and the limiting plates and the base matching part are in blocking matching in the axial direction of the sleeve.
2. The contact structure of claim 1, wherein: the rotating axis of the supporting seat relative to the base is perpendicular to the swinging axis of the contact seat relative to the supporting seat, and the swinging axis of the contact seat relative to the supporting seat is perpendicular to the plugging direction of the plugging structure.
3. The contact structure of claim 1, wherein: the contact seat comprises a bracket, a first clamping plate and a second clamping plate which are assembled on the bracket in a swinging mode, the contact seat is assembled on the supporting seat in a swinging mode through the bracket, and the first clamping plate and the second clamping plate are electrically connected with the supporting seat; the contact seat also comprises an elastic holding structure for holding the first clamping plate and the second clamping plate close to each other, and the insertion structure is enclosed by one ends of the first clamping plate and the second clamping plate, which are far away from the supporting seat.
4. The contact structure of claim 3, wherein: the elastic holding structure comprises a pull rod which is arranged on the first clamping plate and the second clamping plate in a penetrating mode, elastic holding pieces which are arranged on the outer sides of the first clamping plate and the second clamping plate are arranged at two ends of the pull rod, and the first clamping plate and the second clamping plate are kept to be close to each other through the elastic holding pieces.
5. The contact structure of claim 4, wherein: the pull rod is sleeved with a positioning sleeve between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are both pressed at two ends of the positioning sleeve through the elastic holding pieces.
6. A contact structure according to claim 3, 4 or 5, characterized in that: the plug structure comprises plug contact fingers which are arranged on the first clamping plate and the second clamping plate respectively and are used for being in conductive contact with the adaptive contacts.
7. A contact structure according to claim 3, 4 or 5, characterized in that: the supporting seat comprises a contact seat matching part matched with the contact seat, the contact seat matching part is clamped between the two clamping plates, supporting seat contact fingers in conductive contact with the contact seat matching part are arranged on the opposite surfaces of the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are in conductive connection with the supporting seat through the supporting seat contact fingers.
8. The contact structure of claim 7, wherein: the support comprises three swing shafts arranged in parallel at intervals, wherein the swing shaft in the middle is in swing fit with the support seat, the swing shafts on two sides are in swing fit with the first clamping plate and the second clamping plate respectively, and the support seat contact finger is positioned on the first clamping plate and the second clamping plate and between the two swing shafts.
9. The contact structure of claim 1, wherein: the self-resetting elastic element is a plate spring fixed on the limiting plate, and the plate spring is arranged between the base and the contact seat.
10. The contact structure according to any one of claims 1 to 5, wherein: the contact structure is a static contact.
11. Cubical switchboard, including contact structure and with the adaptation contact of contact structure adaptation, its characterized in that: the contact structure comprises a base, a supporting seat is rotatably assembled on the base, a contact seat is assembled on the supporting seat in a swinging mode, an inserting structure used for being matched with an adapter contact in an inserting mode is arranged on the contact seat, an included angle is formed between the rotating axis of the supporting seat and the swinging axis of the contact seat relative to the supporting seat, an included angle is formed between the swinging axis of the contact seat relative to the supporting seat and the inserting direction of the inserting structure, a self-resetting elastic piece used for applying self-resetting acting force to the supporting seat is arranged on the base, a limiting structure used for being matched with the base in a blocking mode after the supporting seat rotates for a set angle is arranged on the base, the base comprises a sleeve, the supporting seat comprises a base matching portion inserted in the sleeve and a contact seat matching portion extending out of the sleeve, the supporting seat is rotatably matched with the sleeve through the, the limiting structure comprises two limiting plates which are arranged on the sleeve at intervals and close to one port edge of the contact seat, one end, close to the sleeve, of the contact seat matching part is located between the two limiting plates, and the limiting plates and the base matching part are in blocking matching in the axial direction of the sleeve.
12. The switchgear cabinet according to claim 11, characterized in that: the rotating axis of the supporting seat relative to the base is perpendicular to the swinging axis of the contact seat relative to the supporting seat, and the swinging axis of the contact seat relative to the supporting seat is perpendicular to the plugging direction of the plugging structure.
13. The switchgear cabinet according to claim 11, characterized in that: the contact seat comprises a bracket, a first clamping plate and a second clamping plate which are assembled on the bracket in a swinging mode, the contact seat is assembled on the supporting seat in a swinging mode through the bracket, and the first clamping plate and the second clamping plate are electrically connected with the supporting seat; the contact seat also comprises an elastic holding structure for holding the first clamping plate and the second clamping plate close to each other, and the insertion structure is enclosed by one ends of the first clamping plate and the second clamping plate, which are far away from the supporting seat.
14. The switchgear cabinet according to claim 13, characterized in that: the elastic holding structure comprises a pull rod which is arranged on the first clamping plate and the second clamping plate in a penetrating mode, elastic holding pieces which are arranged on the outer sides of the first clamping plate and the second clamping plate are arranged at two ends of the pull rod, and the first clamping plate and the second clamping plate are kept to be close to each other through the elastic holding pieces.
15. The switchgear cabinet as claimed in claim 14, wherein: the pull rod is sleeved with a positioning sleeve between the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are both pressed at two ends of the positioning sleeve through the elastic holding pieces.
16. The switchgear as claimed in claim 13, 14 or 15, wherein: the plug structure comprises plug contact fingers which are arranged on the first clamping plate and the second clamping plate respectively and are used for being in conductive contact with the adaptive contacts.
17. The switchgear as claimed in claim 13, 14 or 15, wherein: the supporting seat comprises a contact seat matching part matched with the contact seat, the contact seat matching part is clamped between the two clamping plates, supporting seat contact fingers in conductive contact with the contact seat matching part are arranged on the opposite surfaces of the first clamping plate and the second clamping plate, and the first clamping plate and the second clamping plate are in conductive connection with the supporting seat through the supporting seat contact fingers.
18. The switchgear cabinet as claimed in claim 17, wherein: the support comprises three swing shafts arranged in parallel at intervals, wherein the swing shaft in the middle is in swing fit with the support seat, the swing shafts on two sides are in swing fit with the first clamping plate and the second clamping plate respectively, and the support seat contact finger is positioned on the first clamping plate and the second clamping plate and between the two swing shafts.
19. The switchgear cabinet according to claim 11, characterized in that: the self-resetting elastic element is a plate spring fixed on the limiting plate, and the plate spring is arranged between the base and the contact seat.
20. A switchgear cabinet according to any of claims 11-15, characterized in that: the contact structure is a static contact, and the adaptive contact is a moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031296.1A CN108198704B (en) | 2018-01-12 | 2018-01-12 | Contact structure and switch cabinet using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031296.1A CN108198704B (en) | 2018-01-12 | 2018-01-12 | Contact structure and switch cabinet using same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108198704A CN108198704A (en) | 2018-06-22 |
| CN108198704B true CN108198704B (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810031296.1A Active CN108198704B (en) | 2018-01-12 | 2018-01-12 | Contact structure and switch cabinet using same |
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| Country | Link |
|---|---|
| CN (1) | CN108198704B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277744B (en) * | 2019-06-21 | 2021-02-05 | 许继电气股份有限公司 | Contact device of handcart circuit breaker and handcart circuit breaker |
| CN112614754B (en) * | 2020-12-10 | 2023-04-07 | 平高集团有限公司 | Handcart type direct current circuit breaker and connecting contact thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN202759181U (en) * | 2012-07-16 | 2013-02-27 | 镇江大全伊顿电器有限公司 | Duckbilled moving contact |
| CN206179758U (en) * | 2016-11-24 | 2017-05-17 | 江西省拓网电气有限公司 | But wobbling isolation switch structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4025747A (en) * | 1975-09-11 | 1977-05-24 | Westinghouse Electric Corporation | Circuit interrupter stab assembly with self-aligning clip type contact |
| CN201556872U (en) * | 2009-10-19 | 2010-08-18 | 奉化市泰峰电气科技有限公司 | Distribution cabinet primary contact plate |
| CN205050714U (en) * | 2015-09-29 | 2016-02-24 | 西门子公司 | Cubical switchboard and bus -bar room and moving contact thereof |
-
2018
- 2018-01-12 CN CN201810031296.1A patent/CN108198704B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102118009A (en) * | 2010-01-05 | 2011-07-06 | 北京人民电器厂有限公司 | Electric connection mechanism used for plug-in circuit breaker |
| CN202759181U (en) * | 2012-07-16 | 2013-02-27 | 镇江大全伊顿电器有限公司 | Duckbilled moving contact |
| CN206179758U (en) * | 2016-11-24 | 2017-05-17 | 江西省拓网电气有限公司 | But wobbling isolation switch structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108198704A (en) | 2018-06-22 |
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