Drawer seat and drawer type circuit breaker

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a drawer seat and a drawer type circuit breaker. The drawer seat comprises a side plate, a base and a fastener. The side plates are provided with penetrating holes and limiting grooves extending in the first direction. A boss is arranged on the side wall of the base and used for being inserted into the limiting groove in the first direction. And the fastener penetrates through the through hole and is connected with the base. According to the utility model, the problem that the existing drawer seat adopts a top cross beam and a bottom cross beam is avoided, the part composition of the drawer seat is reduced, the cost is reduced, and the difficulty of realizing automatic assembly is reduced; besides, the drawer seat is not provided with a cross beam, so that a loop cannot be formed around the base under the condition of large current, the temperature rise of the circuit breaker cannot be influenced, and the use performance of the circuit breaker is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a drawer seat and a drawer-type circuit breaker. Background Art

[0002] The drawer seat is an important component of the drawer type circuit breaker and is the hub connecting the circuit breaker body and the user end.

[0003] The drawer seat is connected through the base and the side plates to form a structure for carrying and supporting the circuit breaker.

[0004] The top crossbeam and the bottom crossbeam are fixed between the two side plates of the existing drawer seat, and the assembly of the whole drawer seat is completed by clamping the base with the two crossbeams. However, since the top crossbeam and the bottom crossbeam are connected to the side plates, under the condition of large current, a loop will be formed around the base and an eddy current effect will be generated, thereby increasing the temperature rise of the circuit breaker and affecting the performance of the circuit breaker; in addition, the crossbeam also increases the cost of the whole drawer seat. Utility Model Content

[0005] The utility model aims to provide a drawer seat and a drawer-type circuit breaker, which are used to solve the problem that due to the presence of a crossbeam, a loop is easily formed around the base under high current conditions, an eddy current effect is generated, and the temperature rise of the circuit breaker is increased, which affects the performance of the circuit breaker and the crossbeam increases the cost of the entire drawer seat.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Drawer base, comprising:

[0008] A side plate, wherein the side plate is provided with a through hole and a limiting groove extending along a first direction;

[0009] A base, wherein a boss is provided on a side wall of the base, and the boss is used to be inserted into the limiting groove along the first direction;

[0010] A fastener passes through the through hole and is connected to the base.

[0011] As an optional solution for the drawer seat, the inner wall of the limiting groove is concavely provided with a groove, the boss is provided with a protrusion, and the protrusion is arranged in the groove.

[0012] As an optional solution for a drawer seat, the bottom wall of the groove is connected to the inner wall of one side of the limiting groove where the groove is provided via a first inclined surface, the first inclined surface extends obliquely from the inner wall of one side of the limiting groove toward the bottom wall of the limiting groove, the raised portion is protruding from one side of the boss, a second inclined surface is provided at the connection between the raised portion and the boss, and the inclination direction of the second inclined surface is consistent with that of the first inclined surface.

[0013] As an optional solution for a drawer seat, one end of the boss close to the bottom wall of the limiting groove is provided with a chamfer.

[0014] As an optional solution for a drawer seat, the base is provided with at least one mounting groove and at least one through hole, the through holes are connected to the mounting grooves in a one-to-one correspondence, a connecting piece is provided in the mounting groove, and the fastener passes through the through hole and the through hole in sequence and is connected to the connecting piece.

[0015] As an optional solution for the drawer seat, the fastener is a screw, the connecting member is a square nut, the square nut is arranged in the installation groove, and the screw is threadedly connected to the square nut.

[0016] As an optional solution for the drawer seat, a washer is sandwiched between the head of the screw and the side plate.

[0017] As an optional solution for the drawer seat, a plurality of bosses are provided at intervals on the side wall of the base, and a plurality of limiting grooves are provided on the side plate corresponding to the bosses.

[0018] As an optional solution for a drawer seat, the opening of the limiting groove is provided with rounded corners.

[0019] A drawer-type circuit breaker comprises a circuit breaker body and a drawer base as described in any one of the above schemes, wherein the circuit breaker body is detachably connected to the base.

[0020] Beneficial effects:

[0021] In the first aspect, the circuit breaker body is installed on the base. During assembly, the bosses on both sides of the base are aligned with the limiting grooves of the side panels respectively, and the base is inserted between the two side panels along the first direction. The bosses slide into the limiting grooves. Furthermore, the fasteners are connected to the base through the perforations to achieve the connection between the side panels and the base. The present application avoids the existing drawer seat using the top beam and the bottom beam as the structure, reduces the parts composition of the drawer seat, and reduces the cost. In addition, since the drawer seat of the present application does not introduce the beam component, under the condition of high current, a circuit cannot be formed around the base, which will not affect the temperature rise of the circuit breaker, thereby improving the performance of the circuit breaker.

[0022] Secondly, the drawer-type circuit breaker equipped with the above drawer seat can effectively control the cost of the product and improve the economy of the product. At the same time, since the crossbeam is not introduced, under the condition of large current, a loop will not be formed around the base and eddy current effect will not be generated, which effectively controls the temperature rise of the circuit breaker and ensures the performance of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a drawer seat provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the side plate and the base provided by an embodiment of the utility model;

[0025] Figure 3 yes Figure 2 A local enlarged view at point A;

[0026] Figure 4 It is a side view of the drawer seat provided by the embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a base provided by an embodiment of the utility model;

[0028] Figure 6 It is a side view of the components of the drawer seat provided by the embodiment of the utility model.

[0029] In the figure:

[0030] X, first direction;

[0031] 1. side plate; 11. perforation; 12. limit groove; 121. groove; 122. first inclined surface;

[0032] 2. base; 21. boss; 211. raised portion; 212. second inclined surface; 22. mounting groove; 23. through hole; 24. connecting member;

[0033] 3. Fasteners;

[0034] 4. Washer. 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] Please refer to the attached Figure 1 and attached Figure 2 The first aspect of the present embodiment relates to a drawer base for carrying and supporting a circuit breaker, the drawer base comprising a side plate 1, a base 2 and a fastener 3. The side plate 1 is provided with a through hole 11 and a limiting groove 12 extending along a first direction X; the side wall of the base 2 is provided with a boss 21, the boss 21 is used to be inserted into the limiting groove 12 along the first direction X; the fastener 3 passes through the through hole 11 and is connected to the base 2.

[0040] In this embodiment, the circuit breaker body is mounted on the base 2, and the two side panels 1 are respectively arranged on both sides of the base 2. During assembly, the bosses 21 on both sides of the base 2 are respectively aligned with the limiting grooves 12 of the side panels 1, and the base 2 is manually inserted between the two side panels 1 along the first direction X, and the bosses 21 slide into the limiting grooves 12. Furthermore, the fasteners 3 are connected to the base 2 through the through holes 11 to achieve the connection and fixation of the side panels 1 and the base 2. This embodiment avoids the existing drawer seat using the top crossbeam and the bottom crossbeam by directly connecting the side panels 1 and the base 2, reduces the parts of the drawer seat, reduces the cost, and reduces the difficulty of realizing automatic assembly; in addition, since the drawer seat of this embodiment does not introduce the crossbeam component, under the condition of large current, a circuit cannot be formed around the base 2, which will not affect the temperature rise of the circuit breaker, thereby improving the performance of the circuit breaker.

[0041] Please refer to the attached Figure 3 and attached Figure 4Optionally, a groove 121 is formed on the inner wall of the limiting groove 12 , and a protrusion 211 is formed on the boss 21 , and the protrusion 211 is disposed in the groove 121 .

[0042] In this embodiment, the limit groove 12 extends along the first direction X, and the inner wall of the limit groove 12 located at the bottom continues to be recessed and extended downward to form a groove 121. Correspondingly, a downward extending protrusion 211 is provided on the boss 21. The protrusion 211 and the boss 21 are an integrated structure. When the boss 21 is inserted into the limit groove 12 along the first direction X, the gravity of the base 2 is used to embed the protrusion 211 in the groove 121, thereby assisting the operator to determine whether the boss 21 has been inserted into place.

[0043] In this embodiment, the limiting groove 12 is mainly used to facilitate the sliding assembly of the boss 21, and accurate limiting can be achieved through the cooperation between the groove 121 and the protrusion 211, so the groove width of the limiting groove 12 is greater than the width of the boss 21, and the two achieve clearance fit.

[0044] Optionally, the bottom wall of the groove 121 is connected to the inner wall of one side of the limiting groove 12 provided with the groove 121 through a first inclined surface 122, and the first inclined surface 122 extends obliquely from the inner wall of one side of the limiting groove 12 toward the bottom wall of the limiting groove 12. A protrusion 211 is provided on one side of the boss 21, and a second inclined surface 212 is provided at the connection between the protrusion 211 and the boss 21, and the inclination direction of the second inclined surface 212 is consistent with that of the first inclined surface 122.

[0045] By providing a first inclined surface 122 on the inner wall of the limiting groove 12 and a second inclined surface 212 on the boss 21, it is convenient for the protrusion 211 to slide smoothly into the groove 121, thereby facilitating the plug-in fit between the base 2 and the side panel 1; at the same time, when the base 2 and the side panel 1 are assembled, the first inclined surface 122 is parallel to or overlaps with the second inclined surface 212, which can further facilitate the disassembly of the base 2 and the side panel 1. Specifically, when it is necessary to separate the base 2 from the side panel 1, it is only necessary to apply outward force to make the protrusion 211 quickly disengage along the first inclined surface 122.

[0046] Optionally, one end of the boss 21 close to the bottom wall of the limiting groove 12 is chamfered.

[0047] In this embodiment, by providing chamfers on the boss 21, it is convenient for the boss 21 to be inserted into the limit groove 12, making it easier for the operator to operate. Of course, in other embodiments, the end of the boss 21 close to the bottom wall of the limit groove 12 can also be rounded to achieve similar technical effects. Those skilled in the art can choose according to the difficulty and cost of processing. In order to further improve the assemblability, the opening of the limit groove 12 is provided with rounded corners so that the boss 21 can enter the limit groove 12 more smoothly.

[0048] Please refer to the attached Figure 5 and attached Figure 6 Optionally, at least one mounting groove 22 and at least one through hole 23 are provided on the base 2, the through hole 23 is connected with the mounting groove 22 in a one-to-one correspondence, a connecting piece 24 is provided in the mounting groove 22, and the fastener 3 passes through the through hole 11 and the through hole 23 in sequence and is connected to the connecting piece 24.

[0049] In this embodiment, a through hole 23 for the fastener 3 to pass through is provided on the side wall of the base 2 corresponding to the through hole 11 of the side panel 1. After the fastener 3 passes through the through hole 23, the through hole 23 is connected to the mounting groove 22, and is further connected to the connecting piece 24 located in the mounting groove 22, thereby realizing the connection and fixation between the base 2 and the side panel 1.

[0050] Furthermore, the fastener 3 is a screw, the connecting member 24 is a square nut, and the screw and the square nut are threadedly connected.

[0051] In this embodiment, the fastener 3 is a conventional screw, and the connecting member 24 is a square nut. Before assembly, the square nut is first placed in the mounting groove 22, and the screw hole of the square nut is opposite to the through hole 23. Further, the screw is passed through the through hole 11 and the through hole 23 and screwed to the screw hole. Parts such as screws and square nuts can be conventional standard parts with low cost. At the same time, the connection structure and connection method are simple and convenient.

[0052] Optionally, a washer 4 is sandwiched between the screw and the side plate 1 .

[0053] By fixing with screws and square nuts, the screws and square nuts need to be screwed and locked. By putting the washer 4 on the screw, it is possible to avoid excessive assembly force and damage to the surface of the side panel 1. The washer 4 can be a standard spring washer, which not only improves the vibration resistance, but also provides sufficient extrusion force for the assembly of the side panel 1 and the base 2 during the screwing process of the screws and square nuts, thereby ensuring the stability of the connection between the side panel 1 and the base 2.

[0054] Optionally, a plurality of bosses 21 are provided at intervals on the side wall of the base 2 , and a plurality of limiting grooves 12 are provided on the side plate 1 corresponding to the bosses 21 .

[0055] In this embodiment, two bosses 21 are spaced apart on the two side walls of the base 2, and accordingly, two limit grooves 12 are provided on each side panel 1 to ensure the stability of the overall drawer seat. Those skilled in the art need to reasonably select the number of bosses 21 and limit grooves 12 according to the weight of the circuit breaker and the use environment.

[0056] The second aspect of the present embodiment also relates to a drawer-type circuit breaker, including a circuit breaker body and the above drawer seat, wherein the circuit breaker body can be screwed or clamped on the base 2 of the drawer seat. The drawer-type circuit breaker equipped with the drawer seat can effectively control the cost of the product and improve the economic efficiency of the product. At the same time, since the crossbeam is not introduced, under the condition of large current, a loop will not be formed around the base 2 and an eddy current effect will not be generated, so the temperature rise of the circuit breaker is effectively controlled to ensure the performance of the circuit breaker.

[0057] 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. Drawer seat, characterized in that: include: A side plate (1), wherein the side plate (1) is provided with a through hole (11) and a limiting groove (12) extending along a first direction (X); A base (2), wherein a boss (21) is provided on a side wall of the base (2), and the boss (21) is used to be inserted into the limiting groove (12) along the first direction (X); A fastener (3), wherein the fastener (3) passes through the through hole (11) and is connected to the base (2).

2. The drawer seat according to claim 1, characterized in that: The inner wall of the limiting groove (12) is provided with a groove (121), the boss (21) is provided with a convex portion (211), and the convex portion (211) is arranged in the groove (121).

3. The drawer seat according to claim 2, characterized in that: The bottom wall of the groove (121) is connected to the inner wall of one side of the limiting groove (12) provided with the groove (121) via a first inclined surface (122); the first inclined surface (122) extends obliquely from the inner wall of one side of the limiting groove (12) toward the bottom wall of the limiting groove (12); the raised portion (211) is protrudingly provided on one side of the boss (21); a second inclined surface (212) is provided at the connection between the raised portion (211) and the boss (21); the second inclined surface (212) and the first inclined surface (122) have the same inclination direction.

4. The drawer seat according to claim 1, characterized in that: One end of the boss (21) close to the bottom wall of the limiting groove (12) is provided with a chamfer.

5. The drawer seat according to claim 1, characterized in that: The base (2) is provided with at least one mounting groove (22) and at least one through hole (23), the through hole (23) is connected to the mounting groove (22) in a one-to-one correspondence, a connecting piece (24) is provided in the mounting groove (22), and the fastener (3) passes through the through hole (11) and the through hole (23) in sequence and is connected to the connecting piece (24).

6. The drawer seat according to claim 5, characterized in that: The fastener (3) is a screw, the connecting piece (24) is a square nut, the square nut is arranged in the installation groove (22), and the screw is threadedly connected to the square nut.

7. The drawer seat according to claim 6, characterized in that: A washer (4) is sandwiched between the head of the screw and the side plate (1).

8. The drawer seat according to any one of claims 1 to 7, characterized in that: A plurality of bosses (21) are provided at intervals on the side wall of the base (2), and a plurality of limiting grooves (12) are provided on the side plate (1) corresponding to the bosses (21).

9. The drawer seat according to any one of claims 1 to 7, characterized in that: The opening of the limiting groove (12) is provided with a rounded corner.

10. A drawer-type circuit breaker, comprising a circuit breaker body, characterized in that: It also comprises a drawer seat as claimed in any one of claims 1 to 9, wherein the circuit breaker body is detachably connected to the base (2).

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