Bridge type contact structure

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a bridge-type contact structure, which comprises a housing and a bridge-type contact, the housing comprises two baffle plates oppositely arranged along a first direction and two limiting plates oppositely arranged along a second direction, a mounting channel is enclosed between the baffle plates and the limiting plates, and the bridge-type contact is arranged in the mounting channel. The bridge-type contacts are arranged side by side in the first direction, the bridge-type contacts are arranged in the mounting channel, each bridge-type contact comprises a hoop and a plurality of bridge pieces arranged side by side in the first direction, the bridge pieces are arranged in the hoop, and the hoop comprises fixing plates oppositely arranged in the first direction; at least one of the baffle and the fixing plate adjacent to the baffle and the arc-shaped groove have an overlapping area in the first direction. According to the bridge-type contact structure provided by the utility model, the risk that the bridge-type contact falls off from the bus of the body is reduced, the situation that foreign matters fall into the bridge-type contact to cause a short-circuit fault is prevented, and the phase-to-phase and phase-to-ground dielectric properties of the bridge-type contact are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a bridge-type contact structure. Background Art

[0002] The drawer-type frame circuit breaker consists of a drawer seat and a drawer-type circuit breaker body. The connection between the drawer-type circuit breaker body and the drawer seat requires an inserted electrical connection structure, namely a bridge-type contact structure.

[0003] In the prior art, such as Figure 1 As shown, the bridge contact structure includes a plurality of bridge contacts 10. The bridge contacts 10 are generally mounted on the main body busbar 20 of the drawer-type circuit breaker body, and the drawer-type circuit breaker is arranged on the drawer body. In the process of the drawer body being rocked in relative to the drawer seat, there may be a certain deviation between the drawer-type circuit breaker body and the drawer seat, so that there is an offset when the bridge contact 10 is connected with the drawer seat busbar 30. Therefore, the bridge contact 10 is in contact with the main body busbar 20 through an arc surface, and the installation center of the main body busbar 20 is consistent with the center of the bridge contact 10. The bridge contact 10 can be rotated at an appropriate angle along the center of the circle. Even if there is an installation deviation between the circuit breaker body and the drawer seat, the body can be smoothly rocked into the drawer seat. Although the rotational connection between the bridge-type contact 10 and the main busbar 20 solves the assembly problem, the freedom of the bridge-type contact 10 is not completely constrained, resulting in the bridge-type contact 10 being installed unreliably, especially the outermost part, which is prone to fall if slightly bumped. In severe cases, it may cause a short circuit failure, product burning, and cause major accidents or losses. Utility Model Content

[0004] The utility model aims to provide a bridge-type contact structure to prevent the contact from falling off the busbar of the main body.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A bridge-type contact structure is provided, comprising:

[0007] The housing comprises two baffles arranged opposite to each other in a first direction and two limit plates arranged opposite to each other in a second direction, wherein a mounting channel is formed between the baffles and the limit plates;

[0008] A plurality of bridge-type contacts are arranged side by side along a first direction, and the bridge-type contacts are arranged in the installation channel. The bridge-type contacts include a hoop and a plurality of bridge pieces arranged side by side along the first direction, and the bridge pieces are arranged in the hoop. The first end of the bridge piece is provided with an arc-shaped groove that can be rotatably connected to the main body busbar, and the second end of the bridge piece is provided with a slot that can be plugged into the drawer seat busbar.

[0009] Optionally, a limiting groove is provided on the inner side surface of the limiting plate, and the hoop includes transverse ribs relatively arranged along the second direction, the transverse ribs extend along the first direction, and the transverse ribs are arranged in the corresponding limiting grooves.

[0010] Optionally, a step surface and a plurality of protrusions spaced apart along a first direction are provided on the inner side surface of the limit plate, the protrusions include a groove surface connected to the step surface and an inclined surface connected to the groove surface, the groove surface and the step surface enclose the limit groove, and the inclined surface is connected to the inner side surface of the limit plate.

[0011] Optionally, a plurality of grooves are provided on the outer side surface of the limiting plate, and the grooves are arranged in one-to-one correspondence with the protrusions.

[0012] Optionally, the groove width B1 of the limiting groove is greater than the thickness B2 of the transverse rib.

[0013] Optionally, the first end of the limiting plate is protruding from the bridge-type contact, and the first end of the limiting plate can contact the main body busbar to limit the rotation of the bridge-type contact relative to the main body busbar.

[0014] Optionally, the second end of the limiting plate extends inward to form a blocking bar, and two ends of the blocking bar along the first direction are respectively connected to the blocking plate on the corresponding side.

[0015] Optionally, the cover shell also includes a plurality of reinforcing ribs arranged at intervals along the first direction, the reinforcing ribs are arranged in the installation channel, and installation grooves are respectively formed between the baffle and adjacent reinforcing ribs and between two adjacent reinforcing ribs, the installation grooves correspond one-to-one to the bridge-type contacts, and the bridge-type contacts are inserted into the corresponding installation grooves.

[0016] Optionally, the bridge piece includes two half-bridge pieces arranged opposite to each other, the arc-shaped groove and the slot are formed between the two half-bridge pieces, and the inner edge of the half-bridge piece is provided with a first fixing groove;

[0017] The hoop comprises fixing plates arranged opposite to each other along a first direction, and the fixing plates are provided with fixing holes;

[0018] The bridge-type contact further includes a first support plate, and the first support plate is penetrated by the fixing hole and the first fixing groove.

[0019] Optionally, a second fixing groove is provided on the outer edge of the half-bridge sheet, and the bridge-type contact further includes a second support plate, which is arranged in the second fixing groove, and the second support plate is located in the hoop and abuts against the hoop.

[0020] Beneficial effects:

[0021] The utility model provides a bridge-type contact structure, in which the bridge-type contact is arranged in the installation channel to string together a plurality of bridge-type contacts. When the bridge-type contact structure is assembled on the main body busbar, the main body busbar is rotated and arranged in the arc-shaped groove of the bridge piece. Without changing the original bridge-type contact's function of being able to rotate a certain angle to correct deviation, compared with a single bridge-type contact, the stringed bridge-type contacts have a greater friction force with the main body busbar, effectively reducing the risk of the bridge-type contact falling off the main body busbar, and preventing foreign matter from falling into the bridge-type contact to cause a short circuit fault. In addition, the dielectric properties between phases and phases and between phases and ground at the bridge-type contact can be increased by setting the cover and the hoop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the bridge-type contact during the assembly process provided by the prior art;

[0023] Figure 2 This is a structural schematic diagram of the bridge-type contact structure provided by the utility model during an assembly process;

[0024] Figure 3 It is a schematic diagram of the structure inside the cover provided by the utility model;

[0025] Figure 4 It is a structural schematic diagram of the bridge-type contact provided by the utility model in another assembly process;

[0026] Figure 5 This is a schematic diagram of the structure of the cover provided by the utility model from one perspective;

[0027] Figure 6 The utility model provides Figure 3 Schematic diagram of the enlarged structure at G in the middle;

[0028] Figure 7 This is a schematic structural diagram of the cover provided by the utility model from another viewing angle;

[0029] Figure 8 It is a structural schematic diagram of the bridge-type contact provided by the utility model.

[0030] In the figure:

[0031] 10. Bridge contact; 20. Main body busbar; 30. Drawer seat busbar;

[0032] 100, cover; 110, baffle; 120, limit plate; 121, limit groove; 122, step surface; 123, protrusion; 1231, groove surface; 1232, inclined surface; 1233, transition surface; 124, groove; 130, stop bar; 140, reinforcing rib; 141, mounting groove;

[0033] 200, bridge contact; 210, hoop; 211, fixing plate; 2111, fixing hole; 212, transverse rib; 220, bridge piece; 2201, arc groove; 2202, slot; 221, half bridge piece; 2211, first fixing groove; 2212, second fixing groove; 230, first support plate; 240, second support plate;

[0034] 310, main body busbar; 320, drawer seat busbar. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] Reference Figures 2 to 4As shown, this embodiment provides a bridge-type contact structure, which includes a cover 100 and a bridge-type contact 200 .

[0040] Specifically, the housing 100 includes two baffles 110 disposed opposite to each other along a first direction and two limit plates 120 disposed opposite to each other along a second direction, and an installation channel is formed between the baffles 110 and the limit plates 120;

[0041] Specifically, a plurality of bridge contacts 200 are arranged side by side along the first direction, and the bridge contacts 200 are arranged in the installation channel. The bridge contacts 200 include a hoop 210 and a plurality of bridge pieces 220 arranged side by side along the first direction, and the bridge pieces 220 are arranged in the hoop 210. The first end of the bridge piece 220 is provided with an arc groove 2201 that can be rotatably connected to the body busbar 310, and the second end of the bridge piece 220 is provided with a slot 2202 that can be plugged into the drawer seat busbar 320. The a direction in the figure is the first direction, and the b direction is the second direction.

[0042] In this embodiment, the bridge-type contact 200 is arranged in the installation channel to string together a plurality of bridge-type contacts 200. When the bridge-type contact structure is assembled on the main body busbar 310, the main body busbar 310 is rotated and arranged in the arc groove 2201 of the bridge piece 220. Without changing the original function of the bridge-type contact 200 that can rotate a certain angle to correct the deviation, compared with a single bridge-type contact 200, the bridge-type contacts 200 strung together have a greater friction force with the main body busbar 310, which effectively reduces the risk of the bridge-type contact 200 falling off the main body busbar 310, and can prevent foreign matter from falling into the bridge-type contact 200 to cause a short circuit fault. In addition, the dielectric properties between phases and phases and between phases and ground at the bridge-type contact 200 can be increased by setting the cover 100.

[0043] In a feasible embodiment, the hoop 210 includes a fixing plate 211 arranged relatively to each other along a first direction, and the baffle 110 and at least one of the fixing plates 211 adjacent to the baffle 110 have an overlapping area with the arc-shaped groove 2201 along the first direction, further reducing the risk of the bridge-type contact 200 falling off the main busbar 310.

[0044] Exemplarily, two to six, for example, four, bridge contacts 200 are arranged side by side along the first direction.

[0045] Exemplarily, the cover 100 is made of plastic.

[0046] Exemplarily, when the bridge contact structure is assembled on the main body busbar 310, the arc-shaped groove 2201 can be set to keep the bridge piece 220 and the main body busbar 310 in contact at all times. In the process of the drawer body swinging in relative to the drawer seat, the bridge contact cooperates with the drawer seat busbar 320 for plugging. At this time, the bridge contact can symmetrically rotate a certain angle. The bridge contact will rotate under the force of the drawer seat busbar 320, which has the function of correcting the position, so that the drawer seat busbar 320 can be plugged into the slot 2202. Exemplarily, the angle range of the bridge contact 200 relative to the main body busbar 310 can be 0°-20°, that is, the angle range of the bridge contact 200 rotating toward one side of the main body busbar 310 is 0°-10°, and the angle range of the bridge contact 200 rotating toward the other side of the main body busbar 310 is 0°-10°.

[0047] In this embodiment, refer to Figure 3 , Figure 5 and Figure 6 As shown, the inner side of the limiting plate 120 is provided with a limiting groove 121, and the hoop 210 includes transverse ribs 212 arranged relatively along the second direction, the transverse ribs 212 extending along the first direction, and the transverse ribs 212 are arranged in the corresponding limiting grooves 121. In this embodiment, the connection between the housing 100 and the bridge-type contact 200 is stable and reliable through the mutual cooperation between the transverse ribs 212 and the limiting grooves 121. Among them, a limiting channel is formed between the fixing plate 211 and the transverse ribs 212, and the bridge piece 220 is arranged in the limiting channel. Exemplarily, the hoop 210 can be formed by bending a sheet metal.

[0048] In a feasible implementation, the housing 100 and the hoop 210 have a size matching margin, so that the bridge contact 200 can rotate in the housing 100, which is more suitable for the drawer seat busbar 320 to be plugged into the slot 2202 of the bridge piece 220 of all bridge contacts 200. Exemplarily, the slot width B1 of the limiting slot 121 is greater than the thickness B2 of the transverse rib 212, and a gap is formed between the limiting slot 121 and the crossbeam.

[0049] In a feasible embodiment, when multiple bridge contacts 200 are installed on the main body bus 310, the orientations of the bridge contacts 200 relative to the main body bus 310 may be different, and the end of the installation channel of the cover 100 facing the main body bus 310 can just accommodate the bridge contact 200 when it is rotated to the maximum angle.

[0050] Specifically, a step surface 122 and a plurality of protrusions 123 spaced apart along the first direction are provided on the inner side surface of the limiting plate 120, the protrusion 123 includes a groove surface 1231 connected to the step surface 122 and an inclined surface 1232 connected to the groove surface 1231, the groove surface 1231 and the step surface 122 enclose a limiting groove 121, and the inclined surface 1232 is connected to the inner side surface of the limiting plate 120. Exemplarily, when the bridge-type contact structure is assembled toward the main body busbar 310, first, a plurality of bridge-type contacts 200 are assembled on the main body busbar 310; then, the cover 100 is sleeved on the plurality of bridge-type contacts 200. When the cover 100 is mounted on the bridge contact 200, the transverse rib 212 first contacts the inclined surface 1232 and forms an extrusion, and the cover 100 is deformed. After passing over the inclined surface 1232 and the end surface, the transverse rib 212 is placed in the limiting groove 121. The design of the inclined surface 1232 can facilitate the cover 100 to be mounted on the bridge contact 200.

[0051] Exemplarily, a transition surface 1233 parallel to the limiting plate 120 may be provided between the groove surface 1231 and the inclined surface 1232 to effectively prevent the protrusion 123 from breaking.

[0052] For example, the outer side of the limiting plate 120 is provided with a plurality of grooves 124, and the grooves 124 are arranged one by one with the protrusions 123, which effectively prevents the housing 100 from breaking at the protrusions 123 during the process of being sleeved on the bridge-type contact 200, and the housing 100 is more likely to be deformed, which facilitates the assembly of the housing 100 relative to the bridge-type contact 200. The shape of the grooves 124 can be triangular.

[0053] In a possible implementation, Figure 2 and Figure 3 As shown, the first end of the limit plate 120 can protrude from the bridge contact 200, and the first end of the limit plate 120 can contact the body busbar 310 to limit the rotation of the bridge contact 200 relative to the body busbar 310, so as to further prevent the bridge contact 200 from rotating too much relative to the body busbar 310, thereby affecting the insertion of the drawer seat busbar 320 into the slot 2202. Exemplarily, the first end of the baffle 110 can also protrude from the bridge contact 200 to increase the dielectric performance. The first end of the limit plate 120 is an end of the limit plate 120 facing the body busbar 310 along the third direction, and the c direction in the figure is the third direction.

[0054] In a possible implementation, Figure 3 and Figure 5As shown, the second end of the limit plate 120 extends inward to form a stop bar 130, and the two ends of the stop bar 130 along the first direction are respectively connected to the baffle 110 on the corresponding side. Specifically, the two ends of the stop bar 130 are respectively connected to the second end of the baffle 110 on the corresponding side. Among them, the second end of the limit plate 120 is the end of the limit plate 120 along the third direction facing away from the main body busbar 310. In the process of the cover 100 being sleeved on the bridge-type contact 200, the stop bar 130 forms a limit, so that the transverse rib 212 is just in the limit groove 121, which facilitates the positioning and assembly of the cover 100 relative to the bridge-type contact 200.

[0055] In this embodiment, refer to Figure 2 and Figure 7 As shown, the housing 100 further includes a plurality of reinforcing ribs 140 spaced apart along the first direction, the reinforcing ribs 140 are arranged in the installation channel, and installation grooves 141 are respectively formed between the baffle 110 and the adjacent reinforcing ribs 140 and between two adjacent reinforcing ribs 140, the installation grooves 141 correspond to the bridge contacts 200 one by one, and the bridge contacts 200 are inserted into the corresponding installation grooves 141. It can be understood that the installation channel is divided into a plurality of installation grooves 141 by the arrangement of the reinforcing ribs 140. In this embodiment, the structure of the housing 100 can be made more stable and reliable by the arrangement of the reinforcing ribs 140, and the bridge contacts 200 are limited by the installation grooves 141 so that a certain distance is maintained between the bridge contacts 200.

[0056] In a feasible implementation, the main body busbar 310 is provided with a positioning groove for the fixing plate 211 to be inserted, and the hoop 210 can be positioned along the first direction through the positioning groove, thereby facilitating the bridge contact 200 to be inserted into the corresponding installation groove 141. In particular, relative to the fixing plate 211 located at the outermost side along the first direction, the main body busbar 310 may not be provided with a positioning groove for its insertion.

[0057] In this embodiment, refer to Figure 8 As shown, the bridge piece 220 includes two half-bridge pieces 221 arranged opposite to each other, an arc-shaped groove 2201 and a slot 2202 are formed between the two half-bridge pieces 221, a first fixing groove 2211 is provided on the inner edge of the half-bridge piece 221, and a fixing hole 2111 is provided on the fixing plate 211. The bridge-type contact 200 also includes a first supporting plate 230, and the first supporting plate 230 is penetrated by a fixing hole 2111 and a first fixing groove 2211, so that the half-bridge piece 221 is fixed in the hoop 210, so as to facilitate the assembly of the bridge-type contact 200.

[0058] Specifically, a second fixing groove 2212 is provided on the outer edge of the half-bridge piece 221, and the bridge-type contact 200 also includes a second support plate 240, which is arranged in the second fixing groove 2212, and the second support plate 240 is located in the hoop 210 and abuts against the hoop 210. Through the cooperation of the first support plate 230 and the second support plate 240, the half-bridge pieces 221 on the same side along the second direction can be kept aligned, and the half-bridge piece 221 can be stably fixed in the hoop 210.

[0059] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A bridge-type contact structure, characterized in that: include: A housing (100) comprises two baffles (110) arranged opposite to each other in a first direction and two limit plates (120) arranged opposite to each other in a second direction, wherein an installation channel is formed between the baffles (110) and the limit plates (120); A plurality of bridge-type contacts (200) are arranged side by side along a first direction, the bridge-type contacts (200) are arranged in the installation channel, the bridge-type contacts (200) include a hoop (210) and a plurality of bridge pieces (220) arranged side by side along the first direction, the bridge piece (220) is arranged in the hoop (210), the first end of the bridge piece (220) is provided with an arc-shaped groove (2201) that can be rotatably connected to the main body busbar (310), and the second end of the bridge piece (220) is provided with a slot (2202) that can be plugged into the drawer seat busbar (320).

2. The bridge contact structure according to claim 1, characterized in that: The inner side surface of the limiting plate (120) is provided with a limiting groove (121), and the hoop (210) comprises transverse ribs (212) arranged relatively along the second direction, the transverse ribs (212) extending along the first direction, and the transverse ribs (212) are arranged in the corresponding limiting grooves (121).

3. The bridge contact structure according to claim 2, characterized in that: The inner side surface of the limiting plate (120) is provided with a stepped surface (122) and a plurality of protrusions (123) arranged at intervals along a first direction; the protrusions (123) include a groove surface (1231) connected to the stepped surface (122) and an inclined surface (1232) connected to the groove surface (1231); the groove surface (1231) and the stepped surface (122) enclose the limiting groove (121); and the inclined surface (1232) is connected to the inner side surface of the limiting plate (120).

4. The bridge contact structure according to claim 3, characterized in that: The outer side surface of the limiting plate (120) is provided with a plurality of grooves (124), and the grooves (124) are arranged in a one-to-one correspondence with the protrusions (123).

5. The bridge contact structure according to claim 2, characterized in that: The groove width B1 of the limiting groove (121) is greater than the thickness B2 of the transverse rib (212).

6. The bridge contact structure according to claim 1, characterized in that: The first end of the limiting plate (120) is protruding from the bridge-type contact (200), and the first end of the limiting plate (120) can contact the main body busbar (310) to limit the rotation of the bridge-type contact (200) relative to the main body busbar (310).

7. The bridge contact structure according to claim 1, characterized in that: The second end of the limiting plate (120) extends inward to form a blocking bar (130), and both ends of the blocking bar (130) along the first direction are respectively connected to the blocking plate (110) on the corresponding side.

8. The bridge contact structure according to claim 1, characterized in that: The cover shell (100) further comprises a plurality of reinforcing ribs (140) arranged at intervals along a first direction, the reinforcing ribs (140) being arranged in the installation channel, and installation grooves (141) are respectively formed between the baffle (110) and adjacent reinforcing ribs (140) and between two adjacent reinforcing ribs (140), the installation grooves (141) corresponding to the bridge-type contacts (200) one by one, and the bridge-type contacts (200) are inserted into the corresponding installation grooves (141).

9. The bridge contact structure according to claim 1, characterized in that: The bridge piece (220) comprises two half-bridge pieces (221) arranged opposite to each other, the arc-shaped groove (2201) and the slot (2202) are formed between the two half-bridge pieces (221), and the inner edge of the half-bridge piece (221) is provided with a first fixing groove (2211); The hoop (210) comprises fixing plates (211) arranged opposite to each other along a first direction, and the fixing plates (211) are provided with fixing holes (2111); The bridge-type contact (200) further comprises a first support plate (230), wherein the first support plate (230) is provided with the fixing hole (2111) and the first fixing groove (2211).

10. The bridge contact structure according to claim 9, characterized in that: A second fixing groove (2212) is provided on the outer edge of the half-bridge sheet (221), and the bridge-type contact (200) further comprises a second support plate (240), the second support plate (240) is arranged in the second fixing groove (2212), and the second support plate (240) is located in the hoop (210) and abuts against the hoop (210).

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