Breaker drawer seat easy to dissipate heat

Abstract

The invention relates to the technical field of electrical equipment, and discloses a circuit breaker drawer seat easy to dissipate heat, which comprises a drawer seat frame, a base arranged on the drawer seat frame and a busbar assembly arranged on the base, and is characterized in that the base comprises a plurality of mounting assemblies distributed at intervals and partition plates arranged between the adjacent mounting assemblies; each installation assembly comprises two installation rods distributed in a spaced mode and a first ventilation grid arranged between the two installation rods, the drawer base frame is connected with a second ventilation grid located above the base, and the first ventilation grid and the second ventilation grid are both communicated with the interior of the drawer base frame. When the circuit breaker body is installed, the first ventilation grid and the second ventilation grid can effectively prevent dust from entering the drawer base while guaranteeing the heat dissipation effect, and the dustproof heat dissipation effect is good.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a circuit breaker drawer seat that is easy to dissipate heat. Background Art

[0002] The drawer seat is a device with specific functions in the electrical field. It is widely used in the installation and fixation of equipment such as circuit breakers to improve the convenience of equipment maintenance and installation and the safety and reliability of the system.

[0003] In the related art, a Chinese patent with publication number CN115706396A discloses a frame circuit breaker drawer seat, which includes side panels, a top cover, a busbar, a base, a bridge-type contact and a bottom plate. A cross-shaped through hole is provided on the base, and the busbar can be flipped into a horizontal or vertical form and inserted into the cross-shaped through hole and fixed on the base.

[0004] However, the base in the drawer seat of the frame circuit breaker is usually designed in an integrated manner. When the circuit breaker body is installed in the drawer seat, the interior of the drawer seat is similar to a closed space, and the heat dissipation effect is poor. In order to improve the above problem, the base in some drawers on the market is designed to be split. Even if the base includes a number of spaced mounting rods, the mounting rods are directly exposed, and dust can easily enter the interior of the drawer seat along the gaps between adjacent mounting rods, which affects the normal operation of the equipment and needs to be improved. Summary of the invention

[0005] In order to prevent dust from entering the interior of the drawer seat while ensuring the heat dissipation effect, the present application provides a circuit breaker drawer seat that is easy to dissipate heat.

[0006] The present application provides a circuit breaker drawer seat that is easy to dissipate heat and adopts the following technical solution: A circuit breaker drawer seat that is easy to dissipate heat, comprising a drawer seat frame, a base arranged on the drawer seat frame, and a busbar assembly arranged on the base, wherein the base comprises a plurality of spaced-apart mounting assemblies and a partition arranged between adjacent mounting assemblies, each group of the mounting assemblies comprises two spaced-apart mounting rods and a first air-permeable grille arranged between the two mounting rods, the drawer seat frame is connected to a second air-permeable grille located above the base, and the first air-permeable grille and the second air-permeable grille are both in conduction with the interior of the drawer seat frame.

[0007] By adopting the above technical solution, the base in the present application adopts a split rather than integrated design, which can effectively increase the gap formed by the two mounting rods in the same mounting assembly, expand the heat dissipation area, and thus achieve the purpose of controlling temperature rise. The first air-permeable grille can block dust on the side of the base, and the second air-permeable grille can block dust on the top of the base, so as to effectively block dust from entering the drawer seat while ensuring the heat dissipation effect of the base, thereby ensuring the normal operation of the circuit breaker body in the drawer seat.

[0008] Optionally, the drawer seat frame includes a top cover, side panels arranged on both sides of the top cover, and a crossbeam arranged between the two side panels. The mounting rod is fixedly connected to the crossbeam by fasteners, and the first air vent grille is provided with a through hole for the fastener to pass through.

[0009] By adopting the above technical solution, when assembling the base and the drawer seat frame, the first ventilation grille is first placed between the mounting rod and the crossbeam, and then the first ventilation grille and the mounting rod are fixedly connected to the crossbeam by fasteners, so that the three can be relatively fixed. In the present application, the first ventilation grille and the mounting rod are both connected to the crossbeam by fasteners. Compared with the method of separately connecting the first ventilation grille and the mounting rod, only one connection operation is required, the process is simple, and the installation efficiency is high.

[0010] Optionally, the base further includes positioning rods disposed on both sides of the mounting assembly, and the positioning rods are fixedly connected to adjacent side panels.

[0011] By adopting the above technical solution, the positioning rods are arranged on both sides of the installation component, which can limit the position of the installation component in the horizontal direction, so that the installation component is not easy to shake left and right after being connected to the beam and has high stability.

[0012] Optionally, the busbar assembly includes an upper busbar, a lower busbar located below the upper busbar, a partition block integrally formed on the lower busbar, and a bracket arranged on the upper busbar and the lower busbar, wherein a plurality of through holes are opened on the bracket, and the upper busbar and the lower busbar are respectively fixedly connected to adjacent mounting rods through the bracket.

[0013] By adopting the above technical solution, the partition block is integrally formed on the lower busbar, which helps to conduct heat between the busbar components, thereby increasing the heat dissipation area and improving the heat dissipation effect. In addition, when the upper busbar and the lower busbar are connected to the base, the heat in the drawer seat frame can also be discharged along the through hole, and the heat dissipation effect is good.

[0014] Optionally, a ventilation gap is formed between the upper busbar and the lower busbar, and a plurality of heat dissipation holes communicating with the ventilation gap are spaced apart on the partition block.

[0015] By adopting the above technical solution, the air on both sides of the drawer seat frame can flow along the ventilation gaps and heat dissipation holes to further remove the heat inside the drawer seat frame and on the busbar assembly, thereby further enhancing the heat dissipation effect.

[0016] Optionally, the first ventilation grille includes a ventilation portion and mounting portions arranged on both sides of the ventilation portion, the ventilation portion is provided with a plurality of ventilation holes spaced apart, the through holes are provided on the mounting portions, and the mounting rod is provided with a mounting groove for an adjacent mounting portion to extend into.

[0017] By adopting the above technical solution, when installing the first air grille, each mounting portion can be respectively extended into the adjacent mounting grooves, so that the first air grille can be initially positioned so that the through holes on the mounting portions are aligned with the positions on the mounting rods for fasteners to pass through, thereby improving the installation efficiency of the first air grille.

[0018] Optionally, a fixing groove is provided on the side wall of the mounting portion facing the air-permeable portion, a connecting block is slidably provided in the fixing groove, a connecting spring is provided between the connecting block and the groove wall of the fixing groove away from the opening thereof, the connecting spring has a tendency to drive the connecting block to extend out of the fixing groove, and a connecting groove is provided on the side wall of the air-permeable portion close to the mounting portion for the connecting block to extend into.

[0019] By adopting the above technical solution, the first ventilation grille is assembled from the mounting part and the ventilation part, and the ventilation part is detachably arranged between the two mounting parts. In practical application, the overall lateral width of the first ventilation grille can be changed by adjusting the length of the connecting block extending into the connecting groove, so as to adapt to the mounting rods with different spacings.

[0020] Optionally, a push block is fixedly provided on one side of the connecting block, a push hole connected to the fixing groove is provided on the mounting portion, a clearance hole connected to the mounting groove is provided on the mounting rod, the push block is slidably passed through the push hole and the clearance hole, and a mounting channel for the push block to move in or out of the clearance hole is provided on the mounting rod.

[0021] By adopting the above technical solution, when the first ventilation grille is installed in place, the push block is inserted into the push hole and the clearance hole and one end is exposed to the installation rod. People can use the push block to move the connection block out of the connection groove, thereby separating the ventilation part and the installation part, so that the ventilation part can be removed and cleaned separately. The above removal method does not require the fasteners to be screwed in advance, and the operation is convenient and quick.

[0022] Optionally, a clamping block made of elastic material is provided on the connecting block, and a clamping groove for clamping and cooperating with the clamping block is provided on the groove wall of the connecting groove.

[0023] By adopting the above technical solution, the clamping block and the clamping slot cooperate with each other, which helps to improve the stability of the connecting block when it extends into the connecting slot, thereby improving the connection strength between the air permeable part and the mounting part, and the integrity of the first air permeable grille is good.

[0024] Optionally, a plurality of spring sheets are provided on a side of the air-permeable portion facing the cross beam, and when the first air-permeable grille is connected to the mounting assembly, the spring sheets are in a compressed deformation state.

[0025] By adopting the above technical solution, when the connecting block moves out of the connecting groove, the ventilating portion will move to the side away from the crossbeam under the action of the spring sheet, so that people can quickly take out the ventilating portion for cleaning.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The base in this application is of split design, with a large heat dissipation area and good effect. The first air-permeable grille and the second air-permeable grille can effectively block dust from entering the drawer frame, thereby ensuring the heat dissipation effect while improving the dustproofness of the base to ensure the normal operation of the circuit breaker body in the drawer frame; 2. The partition block is integrally formed on the lower busbar, which is conducive to the conduction of heat between the busbar components; the heat dissipation groove can not only increase the contact area between the partition block and the air, but also facilitate the flow of air on both sides of the drawer seat frame, thereby further improving the heat dissipation effect; 3. The first ventilation grille includes a detachably connected mounting portion and a ventilation portion. When dust adheres to the ventilation portion, people can move the connecting block out of the connecting groove by pushing the block, so as to remove and clean the ventilation portion separately without rotating the fastener, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of Example 1.

[0028] Figure 2 It is a schematic diagram of the explosion of Example 1.

[0029] Figure 3 It is a structural schematic diagram of the base and busbar assembly in Example 1.

[0030] Figure 4 It is a schematic diagram of the structure of the installation assembly and the busbar assembly in Example 1.

[0031] Figure 5 It is a partial exploded schematic diagram of the installation assembly and busbar assembly in Example 1.

[0032] Figure 6 It is an exploded schematic diagram of the busbar assembly in Example 1.

[0033] Figure 7 It is a partial schematic diagram of the installation components in Example 2.

[0034] Figure 8 It is an exploded schematic diagram of the first air-permeable grille in Example 2.

[0035] Fig. 9 It is a partial cross-sectional schematic diagram of the first ventilation grille in Example 2 for displaying the card slot.

[0036] Fig.10 It is a cross-sectional schematic diagram of the first air-permeable grille in Example 2 for displaying the spring piece.

[0037] Description of reference numerals: 1. Drawer seat frame; 11. Base; 12. Top cover; 13. Side panel; 14. Crossbeam; 15. Fixing plate; 2. Base; 21. Mounting assembly; 211. Mounting rod; 212. First ventilation grille; 213. Fastener; 214. Mounting slot; 215. Clearance hole; 216. Mounting channel; 22. Partition plate; 23. Positioning rod; 3. Busbar assembly; 31. Upper busbar; 32. Lower busbar; 33. Separator; 331. heat dissipation hole; 34. bracket; 341. through hole; 35. ventilation gap; 4. air permeable part; 41. air permeable hole; 42. connecting groove; 43. clamping slot; 44. extension groove; 45. storage slot; 46. spring; 5. mounting part; 51. through hole; 52. fixing groove; 53. connecting block; 531. clamping block; 54. connecting spring; 55. push block; 56. push hole; 57. extension part; 6. second air permeable grille. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-10 This application is described in further detail.

[0039] The embodiment of the present application discloses a circuit breaker drawer seat that is easy to dissipate heat.

[0040] Example 1 Reference Figure 1 The circuit breaker drawer base that is easy to dissipate heat includes a drawer base frame 1, a base 2 arranged on one side of the drawer base frame 1, and a busbar assembly 3 arranged on the base 2. A cavity for installing the circuit breaker body is formed inside the drawer base frame 1; the busbar assembly 3 is connected to a side of the base 2 away from the drawer base frame 1, and can be electrically connected to the circuit breaker body through a contact bridge arranged in the drawer base frame 1.

[0041] Reference Figure 2 The drawer seat frame 1 includes a base 11, a top cover 12 located directly above the base 11, side panels 13 disposed on both sides of the top cover 12, and a crossbeam 14 fixedly disposed between the two side panels 13. In this embodiment, two crossbeams 14 are distributed in the vertical direction to illustrate its structure. In other embodiments, the crossbeams 14 can also be designed to be three, four, or other numbers or distributed in other ways. Furthermore, a fixed plate 15 is disposed between the two side panels 13.

[0042] Reference Figure 2 , Figure 3 The base 2 includes a plurality of installation components 21 distributed at intervals, a partition plate 22 disposed between adjacent installation components 21, and positioning rods 23 disposed on both sides of all installation components 21, wherein the two positioning rods 23 are respectively fixedly connected to the adjacent side plates 13 by bolts. Specifically, the partition plate 22 includes three sections, namely, upper, middle and lower sections, wherein the upper section and the lower section are plugged and fixed to the adjacent cross beam 14, and the middle section is connected to the fixing plate 15 by bolts.

[0043] Reference Figure 3 , Figure 4 The mounting components 21 are distributed in three groups in the horizontal direction. Each group of mounting components 21 includes two mounting rods 211 that are spaced apart in the horizontal direction, and a first ventilation grille 212 disposed between the two mounting rods 211. The first ventilation grille 212 is in communication with the interior of the drawer seat frame 1. The mounting rods 211 are fixedly connected to the adjacent crossbeams 14 by fasteners 213. The fasteners 213 are preferably fastening bolts. In this embodiment, the number of first ventilation grilles 212 on each mounting component 21 is two, and the two first ventilation grilles 212 are respectively connected to the upper and lower ends of the mounting rods 211. In other embodiments, the number and position of the first ventilation grilles 212 can also be freely adjusted according to needs.

[0044] Reference Figure 5 The first ventilation grille 212 includes a ventilation portion 4 and mounting portions 5 disposed on both sides of the ventilation portion 4. In this embodiment, the ventilation portion 4 is integrally formed between the two mounting portions 5, and a plurality of ventilation holes 41 are spaced apart on the ventilation portion 4. The ventilation holes 41 are arranged in a long strip shape to facilitate the heat dissipation inside the drawer seat frame 1.

[0045] Reference Figure 4 , Figure 5 The mounting rod 211 is provided with a mounting groove 214 for the adjacent mounting portion 5 to extend into, and the mounting groove 214 is closed on the side away from the drawer seat frame 1, and the mounting portion 5 can extend into the mounting groove 214 in the vertical direction. Furthermore, the mounting portion 5 is provided with a through hole 51 for the fastener 213 to pass through, so that the first air-permeable grille 212 can also be fixedly connected to the crossbeam 14 through the fastener 213.

[0046] Reference Figure 1 , Figure 2 In order to further improve the heat dissipation effect, a second air-permeable grille 6 is connected to the drawer seat frame 1. The second air-permeable grille 6 is integrally formed on the top cover 12 and is located directly above the crossbeam 14 and the base 2. After being installed in place, it is connected to the inside of the drawer seat frame 1, so that the heat in the drawer seat frame 1 can be discharged upward.

[0047] Reference Figure 3 , Figure 6 In the same installation component 21, there are two groups of busbar components 3 distributed along the vertical direction. Each group of busbar components 3 includes an upper busbar 31, a lower busbar 32 located below the upper busbar 31, a partition block 33 integrally formed on the lower busbar 32, and brackets 34 respectively arranged on the opposite sides of the upper busbar 31 and the lower busbar 32. The upper busbar 31 and the lower busbar 32 are respectively fixedly connected to adjacent installation rods 211 by bolts passing through the brackets 34.

[0048] Reference Figure 5 , Figure 6 When the busbar assembly 3 is assembled in place, a ventilation gap 35 is formed between the upper busbar 31 and the lower busbar 32, a plurality of heat dissipation holes 331 communicating with the ventilation gap 35 are spaced apart on the partition block 33, and a plurality of through holes 341 are spaced apart on the bracket 34, which is conducive to the air flow inside and outside the drawer seat frame 1, thereby further improving the heat dissipation effect.

[0049] The implementation principle of a circuit breaker drawer seat that is easy to dissipate heat in the embodiment of the present application is as follows: the base 2 adopts a split rather than integrated design, and the gap formed by the two mounting rods 211 in the same mounting assembly 21 is large and has a good heat dissipation effect; the first air-permeable grille 212 and the second air-permeable grille 6 can block dust from entering the inside of the drawer seat along the side and top surface of the base 2 while improving the heat dissipation effect, and have a good dust-proof heat dissipation effect. The partition block 33 in the busbar assembly 3 is integrally formed on the lower busbar 32, which is conducive to heat conduction in the busbar assembly 3, thereby expanding the heat dissipation area and reducing the temperature rise. The design of the heat dissipation hole 331 and the through hole 341 facilitates the flow of air on both sides of the drawer seat frame 1, thereby further improving the heat dissipation effect.

[0050] Example 2 Reference Figure 7 , Figure 8 and Fig. 9 The difference between this embodiment and embodiment 1 is that the ventilating portion 4 is detachably arranged between the two mounting portions 5. Specifically, the mounting portion 5 is provided with a horizontally extending fixing groove 52 on the side wall facing the ventilating portion 4. A connecting block 53 is slidably arranged in the fixing groove 52. A connecting spring 54 is arranged between the connecting block 53 and the groove wall of the fixing groove 52 away from the opening thereof. The connecting spring 54 has a tendency to drive the connecting block 53 to extend out of the fixing groove 52.

[0051] Reference Figure 7 , Fig. 9 A push block 55 is fixed to the side of the connecting block 53 facing the mounting rod 211. A push hole 56 is provided on the mounting portion 5 and is connected to the fixing groove 52 and extends in the same direction. The push block 55 is slidably inserted into the push hole 56. Furthermore, a clearance hole 215 is provided on the mounting rod 211 and is connected to the mounting groove 214. The clearance hole 215 and the push hole 56 extend in the same direction. When the first air-permeable grille 212 is installed in place, the push hole 56 will be completely aligned with the clearance hole 215, so that one end of the push block 55 can pass through the mounting rod 211 along the clearance hole 215. A mounting channel 216 is provided on the mounting rod 211 and is passed through one side of the vertical opening. The push block 55 can move into or out of the clearance hole 215 along the mounting channel 216.

[0052] Reference Figure 8 , Fig. 9The side wall of the ventilating portion 4 near the mounting portion 5 is provided with a connecting groove 42, and the connecting groove 42 is used for the connecting block 53 to slide into, so as to achieve the connection between the ventilating portion 4 and the mounting portion 5. In order to improve the plugging strength between the connecting block 53 and the connecting groove 42, in this embodiment, a clamping block 531 made of elastic material is fixed on the connecting block 53, and a clamping groove 43 for cooperating with the clamping block 531 is provided on the groove wall of the connecting groove 42. When the ventilating portion 4 is connected to the mounting portion 5, the clamping block 531 will extend into the corresponding clamping groove 43, so that the connecting block 53 is not easy to move out of the connecting groove 42, and the connection strength between the ventilating portion 4 and the mounting portion 5 is high.

[0053] Reference Fig. 9 In order to facilitate the rapid assembly of the first ventilation grille 212, an extension portion 57 is integrally formed on the side of the mounting portion 5 facing the ventilation portion 4, and the extension portion 57 is located at the end of the mounting portion 5 away from the mounting rod 211. Correspondingly, an extension groove 44 is provided on the ventilation portion 4 for the extension portion 57 to extend into. When assembling the ventilation portion 4 and the mounting portion 5, after the ventilation portion 4 is moved to abut against the extension portion 57, the connection block 53 will be quickly aligned with the connection groove 42, and the connection efficiency is high.

[0054] Reference Fig.10 In order to facilitate the removal of the ventilating portion 4, a plurality of horizontally spaced storage slots 45 are provided on the side of the ventilating portion 4 facing the cross beam 14. Each storage slot 45 is provided with a spring 46. In this embodiment, the spring 46 is formed by bending a metal plate, and a part of the metal plate is fixed on the groove wall of the storage slot 45, and the other part can be moved out of the storage slot 45 under its own elastic action. When the first ventilating grille 212 is connected to the mounting assembly 21, the ventilating portion 4 will fit with the cross beam 14, and the spring 46 is in a compressed deformation state and extends into the storage slot 45; after the connecting block 53 moves out of the connecting slot 42, the ventilating portion 4 will move to the side away from the cross beam 14 under the action of the spring 46, thereby saving people from manually buckling out the ventilating portion 4, so that the ventilating portion 4 can be quickly removed and cleaned.

[0055] The implementation principle of the circuit breaker drawer seat that is easy to dissipate heat in the embodiment of the present application is as follows: when dust is accumulated on the first ventilation grille 212, the push block 55 is moved to the side away from the ventilation part 4, and the connecting block 53 will move accordingly and disengage from the connecting groove 42. After both connecting blocks 53 in the ventilation part 4 are moved out, the spring piece 46 will drive the ventilation part 4 to move to the side away from the crossbeam 14, so that the ventilation part 4 can be removed and cleaned separately. The above removal method does not require the fastener 213 to be rotated, and the operation is simple and convenient.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A circuit breaker drawer base that is easy to dissipate heat, comprising a drawer base frame (1), a base (2) arranged on the drawer base frame (1), and a busbar assembly (3) arranged on the base (2). Features: The base (2) comprises a plurality of installation components (21) arranged at intervals, and a partition (22) arranged between adjacent installation components (21); each group of the installation components (21) comprises two installation rods (211) arranged at intervals, and a first ventilation grille (212) arranged between the two installation rods (211); the drawer seat frame (1) is connected to a second ventilation grille (6) located above the base (2); and the first ventilation grille (212) and the second ventilation grille (6) are both in conduction with the interior of the drawer seat frame (1).

2. The circuit breaker drawer seat that is easy to dissipate heat according to claim 1, Features: The drawer seat frame (1) comprises a top cover (12), side panels (13) arranged on both sides of the top cover (12), and a crossbeam (14) arranged between the two side panels (13); the mounting rod (211) is fixedly connected to the crossbeam (14) via a fastener (213); and the first air permeable grille (212) is provided with a through hole (51) for the fastener (213) to pass through.

3. The circuit breaker drawer seat that is easy to dissipate heat according to claim 2, Features: The base (2) further comprises positioning rods (23) respectively arranged on both sides of the mounting assembly (21), and the positioning rods (23) are fixedly connected to adjacent side panels (13).

4. The circuit breaker drawer seat that is easy to dissipate heat according to claim 1, Features: The busbar assembly (3) comprises an upper busbar (31), a lower busbar (32) located below the upper busbar (31), a partition block (33) integrally formed on the lower busbar (32), and a bracket (34) arranged on the upper busbar (31) and the lower busbar (32), wherein the bracket (34) is provided with a plurality of through holes (341), and the upper busbar (31) and the lower busbar (32) are respectively fixedly connected to adjacent mounting rods (211) through the bracket (34).

5. The circuit breaker drawer seat that is easy to dissipate heat according to claim 4, Features: A ventilation gap (35) is formed between the upper busbar (31) and the lower busbar (32), and a plurality of heat dissipation holes (331) in communication with the ventilation gap (35) are provided at intervals on the partition block (33).

6. The circuit breaker drawer seat that is easy to dissipate heat according to claim 2, Features: The first ventilation grille (212) comprises a ventilation portion (4) and mounting portions (5) arranged on both sides of the ventilation portion (4); the ventilation portion (4) is provided with a plurality of ventilation holes (41) spaced apart from each other; the through hole (51) is provided on the mounting portion (5); and the mounting rod (211) is provided with a mounting groove (214) for an adjacent mounting portion (5) to extend into.

7. The circuit breaker drawer seat that is easy to dissipate heat according to claim 6, Features: The mounting portion (5) is provided with a fixing groove (52) on a side wall facing the ventilating portion (4), a connecting block (53) is slidably arranged in the fixing groove (52), a connecting spring (54) is arranged between the connecting block (53) and a groove wall of the fixing groove (52) away from the opening thereof, the connecting spring (54) having a tendency to drive the connecting block (53) to extend out of the fixing groove (52), and a connecting groove (42) for the connecting block (53) to extend into is provided on a side wall of the ventilating portion (4) close to the mounting portion (5).

8. The circuit breaker drawer seat that is easy to dissipate heat according to claim 7, Features: A push block (55) is fixedly arranged on one side of the connecting block (53); a push hole (56) communicating with the fixing groove (52) is provided on the mounting portion (5); a clearance hole (215) communicating with the mounting groove (214) is provided on the mounting rod (211); the push block (55) is slidably inserted into the push hole (56) and the clearance hole (215); and a mounting channel (216) for allowing the push block (55) to move into or out of the clearance hole (215) is provided on the mounting rod (211).

9. The circuit breaker drawer seat that is easy to dissipate heat according to claim 7, Features: The connection block (53) is provided with a clamping block (531) made of elastic material, and the groove wall of the connection groove (42) is provided with a clamping groove (43) for clamping and cooperating with the clamping block (531).

10. The circuit breaker drawer seat that is easy to dissipate heat according to claim 7, Features: A plurality of spring sheets (46) are arranged on one side of the air permeable portion (4) facing the crossbeam (14); when the first air permeable grille (212) is connected to the mounting assembly (21), the spring sheets (46) are in a compressed deformation state.

Images