A safety shield opening and closing device of a circuit breaker drawer seat

Abstract

This utility model discloses a safety partition opening and closing device for a circuit breaker drawer seat, including a base, a push rod assembly, and two safety partitions arranged in an inner and outer stacked manner. The two safety partitions are slidably engaged with the base. The push rod assembly is located at the edge of the base and is provided in two sets. The two sets of push rod assemblies are respectively engaged with the sides of the two safety partitions, driving the corresponding safety partitions to slide. This utility model moves the push rod assembly from the center of the base to the side of the base, and simultaneously controls the movement of the two safety partitions through the two push rod assemblies, which solves the heat dissipation problem of the circuit breaker and improves the stability of the safety partition movement.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker design technology, and in particular to a safety partition opening and closing device for a circuit breaker drawer seat. Background Technology

[0002] In recent years, in the power distribution industry, customers have developed circuit breakers with vertical busbars to ensure that high-current (above 3200A) frame circuit breakers meet temperature rise requirements. This effectively improves the overall temperature rise performance of the circuit breaker. Accordingly, when developing the drawer base for the circuit breaker, a vertical safety partition device for the drawer base must be designed according to the circuit breaker's outgoing line configuration.

[0003] Existing vertical drawer seat safety partition devices on the market are mainly based on the structure described in patent number CN201829855U. Since the inner and outer partitions need to move simultaneously, this patent installs a push rod device in the middle phase cavity of the base. The movement of the two partitions is controlled simultaneously by guide grooves on both sides of the push rod. Although this structure can theoretically achieve synchronous movement of the two partitions, because the guide grooves on both sides are located on the same push rod, if the structural fit is not precise, or if the push rod is tilted vertically, movement may become stuck, thus affecting the left and right opening and closing of the partitions. Secondly, the push rod assembly is located in the middle of the base, which will block the heat dissipation airflow of the critical middle phase, thus affecting the temperature rise of the circuit breaker, which is a significant disadvantage for product performance. Utility Model Content

[0004] To address the technical problem of unstable partition movement in existing drawer seat safety partition devices, which affects the temperature rise of the circuit breaker, this utility model provides a safety partition opening and closing device for circuit breaker drawer seats to solve the above-mentioned problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a safety partition opening and closing device for a circuit breaker drawer seat, including a base, a top rod assembly and two safety partitions arranged inside and outside. The two safety partitions are slidably engaged with the base. The top rod assembly is located at the edge of the base and is provided in two sets. The two sets of top rod assemblies are engaged with the sides of the two safety partitions one by one, and drive the corresponding safety partitions to slide.

[0006] In an optional embodiment of this utility model, the push rod assembly includes a push rod and a reset member. The push rod includes a positioning part and a guide part arranged along the movement direction of the push rod assembly. The positioning part slides with the base along the thickness direction of the base. The reset member is located between the positioning part and the base. The guide part includes an insert plate and a guide rib arranged perpendicular to the insert plate. The side of the safety partition has a cross groove for the insert plate and the guide rib to pass through.

[0007] In an optional embodiment of this invention, the top rod assembly is located on two opposite sides of the base.

[0008] In an optional embodiment of this utility model, the side of the base is provided with a cavity for the positioning part to be inserted, the inner wall of the cavity is provided with a limiting groove, and the positioning part has a limiting buckle that moves along the limiting groove. When the top rod extends outward to the limit position, the limiting buckle abuts against the end of the limiting groove.

[0009] In an optional embodiment of this utility model, the positioning part has a cylindrical cavity for accommodating the reset member, and the inner bottom surface of the cavity has a positioning post for sleeved with the reset member.

[0010] In an optional embodiment of this utility model, the positioning part includes two rectangular plates arranged opposite to each other, the limiting buckle is arranged perpendicularly to the two rectangular plates, the opposite surfaces of the two rectangular plates have arc-shaped inner walls, and a cylindrical cavity is formed between the two arc-shaped inner walls.

[0011] In an optional embodiment of this utility model, the base surface located on the side of the chamber has a guide boss, and the safety partition has a guide groove that slides with the guide boss.

[0012] In an optional embodiment of this utility model, the two chambers are arranged symmetrically, each safety partition has guide grooves on both sides, and the safety partition that does not cooperate with the top rod assembly has a clearance groove on one side.

[0013] In an optional embodiment of this utility model, the top of the base is provided with a protruding barb, and the safety partition has a limiting hole that engages with the protruding barb, allowing the protruding barb to move left and right within the limiting hole.

[0014] In an optional embodiment of this utility model, pressure plates are also connected to both sides of the base, and a mounting hole is provided in the center of the guide boss. The pressure plate is connected to the base through the mounting hole, and a safety partition is pressed between the base and the pressure plate.

[0015] The beneficial effects of this utility model are: (1) This utility model moves the top rod assembly from the center of the base to the side of the base, and controls the movement of the two safety partitions by the two top rod assemblies respectively, which solves the heat dissipation problem of the circuit breaker and improves the stability of the movement of the safety partitions.

[0016] (2) The top rod assembly in this utility model only needs to control the movement of a safety partition, and only a guide rib needs to be set on the top rod, thus simplifying the structure.

[0017] (3) The present invention prevents the resetting component from bending and deforming by setting the cylindrical cavity and positioning column, thus extending its service life.

[0018] (4) The present invention ensures the left and right linear movement of the safety partition by the guide structure design between the base and the safety partition, and avoids the safety partition from shifting up and down, which would cause the knife insertion holes to be mismatched. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of a specific embodiment of the safety partition opening and closing device for the circuit breaker drawer seat described in this utility model; Figure 2 This is a front view of a specific embodiment of the safety partition opening and closing device for the circuit breaker drawer seat described in this utility model; Figure 3 yes Figure 2 Sectional view along axis AA; Figure 4 This is a perspective view of the base in this utility model; Figure 5 This is a cross-sectional view of the cavity in the base of the present invention; Figure 6 This is a perspective view of the push rod in this utility model; Figure 7 This is a front view of the safety partition in this utility model; Figure 8 yes Figure 7 Enlarged view of point a in the image.

[0021] In the diagram, 1. Base, 101. Chamber, 102. Limiting groove, 103. Positioning post, 104. Guide boss, 105. Protruding barb, 2. Top rod assembly, 3. Safety partition, 301. Cross groove, 302. Guide groove, 303. Limiting hole, 304. Relief groove, 4. Inserting hole, 5. Top rod, 501. Positioning part, 5011. Limiting buckle, 5012. Cylindrical cavity, 5013. Rectangular plate, 5014. Arc-shaped inner wall, 502. Guide part, 5021. Inserting plate, 5022. Guide rib, 6. Reset part, 7. Pressure plate. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] Example 1 like Figures 1-3As shown, a safety partition opening and closing device for a circuit breaker drawer includes a base 1, a top rod assembly 2, and two safety partitions 3 arranged in an inner and outer superimposed manner. The two safety partitions 3 are slidably engaged with the base 1. The top rod assembly 2 is located at the edge of the base 1 and is provided in two sets. The two sets of top rod assemblies 2 are engaged with the sides of the two safety partitions 3 in a one-to-one correspondence, and respectively drive the corresponding safety partitions 3 to slide.

[0024] As shown in the figure, the base 1 has multiple cavities. Two safety partitions 3 are stacked on top of the base 1. Each safety partition 3 has a knife hole 4 corresponding to each cavity. When the two safety partitions 3 overlap, the knife holes 4 of the two safety partitions 3 coincide, allowing for wiring. When the two safety partitions 3 move relative to each other, the knife holes 4 on the two safety partitions 3 are staggered.

[0025] Compared with the traditional structure, this utility model places the top rod assembly 2 on the edge of the base 1, which will not block the heat dissipation air duct of the critical phase in the middle of the base 1, thus solving the heat dissipation problem of the circuit breaker. Secondly, there are two top rod assemblies 2, and each top rod assembly 2 only cooperates with one safety partition 3. Even if the top rod assembly 2 tilts, it will not be stuck due to the restriction of the cooperation on both sides, thereby improving the stability of the movement of the safety partition 3.

[0026] Structure of push rod assembly 2: The push rod assembly 2 includes a push rod 5 and a reset member 6. The push rod 5 includes a positioning part 501 and a guide part 502 arranged along the movement direction of the push rod assembly 2. The movement direction of the push rod assembly 2 is the thickness direction of the base 1. The positioning part 501 slides with the base 1 along the thickness direction of the base 1, so that the push rod assembly 2 can maintain linear reciprocating motion. The reset member 6 is located between the positioning part 501 and the base 1. The guide part 502 includes an insert plate 5021 and a guide rib 5022 arranged perpendicular to the insert plate 5021. The side of the safety partition 3 has a cross groove 301 through which the insert plate 5021 and the guide rib 5022 pass.

[0027] The reset element 6 is usually a spring, which plays a reset role. When the push rod 5 is pressed towards the base 1, the reset element 6 contracts and deforms. When the push rod 5 is released, the reset element 6 automatically drives the push rod 5 to move outward.

[0028] The mating part between the cross groove 301 and the insert plate 5021 allows for a sliding fit between the safety partition 3 and the top rod 5. The mating part between the cross groove 301 and the guide rib 5022 can push the safety partition 3 to move. As shown in the figure, the guide rib 5022 has an inclined part. When this inclined part contacts the cross groove 301, it can push the safety partition 3 to move left and right.

[0029] Traditional push rod 5 devices require two guide ribs 5022 to be installed on the same push rod 5, which are matched with two safety partitions 3. When the push rod 5 tilts, it will rub against both the inner and outer safety partitions 3 at an angle. Since the two safety partitions 3 move in opposite directions, this friction can easily cause the push rod 5 to jam. In this embodiment, the push rod assembly 2 only controls the movement of one safety partition 3. Even if the push rod 5 tilts, it will only affect the safety partition 3 connected to it. In this case, the tilt of the push rod 5 will not cause jamming.

[0030] The two push rod assemblies 2 can be located on the same side of the base 1 or on two opposite sides of the base 1. Since the two safety partitions 3 move in opposite directions, when the two push rod assemblies 2 are located on the same side, the guide ribs 5022 on the two push rods 5 bend in opposite directions. To facilitate mass production of parts, this embodiment preferably places the two push rod assemblies 2 on two opposite sides of the base 1, so that the two push rod assemblies 2 have the same structure.

[0031] Assembly of push rod assembly 2 with base 1: The base 1 has a chamber 101 on its side for the positioning part 501 to be inserted. The inner wall of the chamber 101 has a limiting groove 102. The positioning part 501 has a limiting buckle 5011 that moves along the limiting groove 102. When the push rod 5 extends outward to its limit position, the limiting buckle 5011 abuts against the end of the limiting groove 102. The chamber 101 is used for sliding engagement with the positioning part 501. The limiting groove 102 and the limiting buckle 5011 are provided to limit the movement limit of the positioning part 501 and prevent the push rod assembly 2 from disengaging from the chamber 101.

[0032] In a further design, the positioning part 501 has a cylindrical cavity 5012 inside to accommodate the reset member 6, and the inner bottom surface of the chamber 101 has a positioning post 103 for fitting the reset member 6. The positioning post 103 positions the reset member 6, and the cylindrical cavity 5012 is used to wrap the outside of the reset member 6. The cylindrical cavity 5012 can be a cavity excavated from the bottom of the positioning part 501 into the positioning part 501. In this embodiment, the positioning part 501 includes two rectangular plates 5013 arranged opposite to each other, and a limiting buckle 5011 is arranged perpendicularly to the two rectangular plates 5013. The opposite surfaces of the two rectangular plates 5013 have arc-shaped inner walls 5014, and the cylindrical cavity 5012 is formed between the two arc-shaped inner walls 5014. As shown in the figure, the outer contour of the positioning part 501 is square, and the space between the two rectangular plates 5013 can provide deformation space for the limiting buckle 5011, which facilitates the disassembly and assembly of the top rod 5.

[0033] Example 2 Based on the above embodiments, this embodiment provides a guide structure between the safety partition 3 and the base 1. This structure serves two purposes: firstly, it provides installation positioning, and secondly, it ensures the straightness of the left and right movement of the safety partition 3, preventing the safety partition 3 from sliding out in the up and down direction.

[0034] As shown in the figure, the base 1 located on the side of the chamber 101 has a guide boss 104 on its surface, and the safety partition 3 has a guide groove 302 that slides with the guide boss 104. The guide boss 104 mainly serves the purpose of installation and positioning.

[0035] As shown in the figure, the base 1 has a protruding barb 105 on its top, and the safety partition 3 has a limiting hole 303 that engages with the protruding barb 105. The protruding barb 105 can move left and right within the limiting hole 303. The protruding barb 105 can prevent the safety partition 3 from sliding out in the up-down direction shown in the figure.

[0036] In a preferred embodiment, the two chambers 101 are arranged symmetrically, and each safety partition 3 is provided with guide grooves 302 on both sides, and the safety partition 3 that does not cooperate with the top rod assembly 2 is provided with a clearance groove 304 on one side, so that the structures of the two safety partitions 3 can be exactly the same.

[0037] Example 3 Based on the above embodiment, pressure plates 7 are also connected to both sides of the base 1. The pressure plates 7 are fixed to the base 1, and the safety partition 3 is pressed between the base 1 and the pressure plates 7, which serves to press down the safety partition 3.

[0038] When a guide boss 104 is provided, a mounting hole can be machined in the center of the guide boss 104, and the pressure plate 7 is connected to the base 1 through the mounting hole.

[0039] In the description of this utility model, it should be understood that the terms "center", "thickness", "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiments. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0041] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A safety partition opening and closing device for a circuit breaker drawer seat, characterized in that: The system includes a base (1), a top rod assembly (2), and two safety partitions (3) arranged in an inner and outer superposition. The two safety partitions (3) are slidably engaged with the base (1). The top rod assembly (2) is located at the edge of the base (1) and is provided in two sets. The two sets of top rod assemblies (2) are engaged with the sides of the two safety partitions (3) one by one, respectively driving the corresponding safety partitions (3) to slide. The top rod assembly (2) includes a top rod (5) and a reset member (6). The top rod (5) includes a section along the top rod assembly (2). The positioning part (501) and the guide part (502) are arranged in the direction of movement. The positioning part (501) slides with the base (1) along the thickness direction of the base (1). The reset part (6) is located between the positioning part (501) and the base (1). The guide part (502) includes a plate (5021) and a guide rib (5022) arranged perpendicular to the plate (5021). The side of the safety partition (3) has a cross groove (301) through which the plate (5021) and the guide rib (5022) pass.

2. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 1, characterized in that: The top rod assembly (2) is located on two opposite sides of the base (1).

3. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 1, characterized in that: The base (1) has a chamber (101) on its side for the positioning part (501) to be inserted. The inner wall of the chamber (101) is provided with a limiting groove (102). The positioning part (501) has a limiting buckle (5011) that moves along the limiting groove (102). When the top rod (5) extends outward to the limit position, the limiting buckle (5011) abuts against the end of the limiting groove (102).

4. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 3, characterized in that: The positioning part (501) has a cylindrical cavity (5012) inside that accommodates the reset member (6), and the inner bottom surface of the cavity (101) has a positioning post (103) on which the reset member (6) is sleeved.

5. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 4, characterized in that: The positioning part (501) includes two rectangular plates (5013) arranged opposite to each other. The limiting buckle (5011) is arranged perpendicular to the two rectangular plates (5013). The two rectangular plates (5013) have arc-shaped inner walls (5014) on their opposite surfaces, and a cylindrical cavity (5012) is formed between the two arc-shaped inner walls (5014).

6. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 3, characterized in that: The base (1) located on the side of the chamber (101) has a guide boss (104) on its surface, and the safety partition (3) has a guide groove (302) that slides with the guide boss (104).

7. The safety partition opening and closing device for a circuit breaker drawer seat according to claim 6, characterized in that: The two chambers (101) are arranged symmetrically, and each safety partition (3) has a guide groove (302) on both sides, and a clearance groove (304) is provided on one side of the safety partition (3) that does not cooperate with the top rod assembly (2).

8. The safety partition opening and closing device for the circuit breaker drawer seat according to claim 1, characterized in that: The base (1) has a protruding barb (105) on its top, and the safety partition (3) has a limiting hole (303) that engages with the protruding barb (105). The protruding barb (105) can move left and right within the limiting hole (303).

9. The safety partition opening and closing device for a circuit breaker drawer seat according to claim 6, characterized in that: The base (1) is also connected to pressure plates (7) on both sides. The center of the guide boss (104) is provided with an installation hole. The pressure plate (7) is connected to the base (1) through the installation hole. The safety partition (3) is pressed between the base (1) and the pressure plate (7).

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