A protection structure for busbars

Abstract

This utility model relates to the field of busbar protection technology and discloses a protective structure for a busbar, including a housing, an opening, and a protective cover. A snap-fit ​​structure is provided between the protective cover and the housing. The snap-fit ​​structure includes a slot on the housing and a snap fastener that is elastically telescopically provided on the side wall of the protective cover. During the closing of the protective cover, the snap fastener elastically retracts, and when the protective cover is closed, the snap fastener elastically extends so that the horizontal section of the snap fastener is inserted into the slot. A limiting structure is provided between the snap fastener and the protective cover to restrict the elastic retraction of the snap fastener when the horizontal section of the snap fastener is inserted into the slot. This protective structure elastically telescopically sets the snap fastener on the protective cover. When disassembly is required, the limiting structure on the snap fastener is released, and the snap fastener is driven to elastically retract or extend. Compared with the direct squeezing of the snap fastener and the housing and violent disassembly, the assembly resistance and disassembly difficulty between the two are greatly reduced, making the protective structure easy to disassemble and disassemble and not easily damaged.

Description

Technical Field

[0001] This utility model relates to the field of busbar protection technology, and in particular to a protective structure for busbars. Background Technology

[0002] Busbars, also known as busbars, are made of metals such as copper and aluminum and serve to connect electrical equipment and transmit current in circuits.

[0003] Because busbars carry a large current, accidental contact could cause serious injury to users. To ensure safety, a protective structure is installed on the outside of the busbar. This structure includes an insulated protective housing. To facilitate installation, openings are provided at both ends of the protective housing, with detachable insulated protective covers attached to these openings. When installation is required, remove the protective covers, connect one end of the busbar to the electrical equipment, and then replace the protective covers.

[0004] The existing protective housing 2 and protective cover 4 are detachably connected directly via a snap-fit ​​structure. This snap-fit ​​structure includes a snap-fit ​​6 on the protective cover 4 and a slot 5 on the protective housing 2 into which the horizontal section of the snap-fit ​​6 engages. During the closing process of the protective cover 4, the snap-fit ​​6 needs to engage with the protective housing 2 through a squeezing and sliding mechanism. Utilizing the snap-fit ​​6's own elastic deformation capability, it first elastically deforms and then returns to its original shape before being inserted into the slot 5. For details, please refer to [reference needed]. Figure 1 and Figure 2 .

[0005] However, in practical applications, to ensure the excellent insulation, fire resistance, high temperature resistance, and pressure resistance of the protective structure, the protective shell 2 is made of PPS material, while the protective cover 4 and the buckle 6 are made of PA6 material. PA6 has poor elastic deformation capability, and the buckle 6 directly compresses against the protective shell 2, causing it to deform. The resistance to buckle 6's deformation is significant; when this resistance exceeds the elastic deformation capability of the buckle 6 and the protective shell 2, it can cause deformation or cracking of both. Simultaneously, after the buckle 6 and the slot 5 are engaged, the protective cover 4 becomes difficult to remove, requiring forceful disassembly, which also damages the buckle 6 and the protective shell 2. Ultimately, all these factors lead to a decrease in engagement strength, or even a complete failure to engage. Utility Model Content

[0006] This invention addresses the shortcomings of existing technologies where the buckles and protective housings are easily damaged during installation or disassembly. It provides a protective structure for busbars that is easy to install and remove and is not easily damaged.

[0007] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0008] A protective structure for a busbar includes a housing disposed outside the busbar, openings at both ends of the housing located at both ends of the busbar, and a protective cover that can open or close the openings. The protective cover and the housing are detachably connected by a snap-fit ​​structure. The snap-fit ​​structure includes a slot on the housing and a buckle on the side wall of the protective cover that is horizontally elastically extended and retracted along the direction perpendicular to the closing of the protective cover. During the closing of the protective cover, the buckle horizontally elastically retracts and vertically inserts into the opening of the housing. When the protective cover is closed, the buckle horizontally elastically extends so that the horizontal section of the buckle engages with the slot. A limiting structure is provided between the buckle and the protective cover to restrict the retraction of the buckle when the horizontal section of the buckle engages with the slot.

[0009] Using the above scheme, the snap-fit ​​mechanism is elastically telescopically mounted on the housing. When the protective cover needs to be removed, the limiting structure is released from the snap-fit, causing it to elastically retract and disengage from the slot, allowing the protective cover to be removed. Conversely, when the protective cover needs to be installed, the limiting structure is released from the snap-fit. During the closing process of the protective cover, the snap-fit ​​horizontally and elastically retracts, vertically inserting into the opening of the housing as the cover closes. When the protective cover and housing come into contact and are closed, the horizontal section of the snap-fit ​​aligns with the slot, and the snap-fit ​​elastically extends and resets, thus achieving the snap-fit ​​engagement. Finally, the limiting structure restricts the movement of the snap-fit ​​relative to the protective cover, ensuring that the protective cover is securely mounted on the housing. Compared to direct compression between the snap-fit ​​and the housing, the elastic telescopic snap-fit ​​mechanism combined with the limiting structure significantly reduces assembly resistance and disassembly difficulty, making the protective structure easy to install and remove and less prone to damage.

[0010] Preferably, the protective cover has a recessed notch on its side wall for the extension and retraction of the buckle. The vertical section of the buckle, away from the horizontal section, has a sliding block protruding from the horizontal section. The bottom of the notch has a recessed sliding groove for the sliding block to be inserted into and moved away from the buckle. A spring is provided between the sliding groove and the sliding block along the moving direction of the sliding block to drive the buckle to be in the extended state under normal conditions.

[0011] In the above solution, since the protective cover ultimately needs to overlap and close onto the housing, and the latch is telescopically mounted on the side wall of the protective cover, a notch is required. This ensures that when the latch retracts to its maximum stroke, it can be vertically inserted into the opening of the housing or pulled out from within the housing without contacting it, as the protective cover is closed or removed. During the closing process of the protective cover, the latch can cooperate with the housing in a squeezing and sliding motion to drive the sliding block to retract and compress the spring; alternatively, external force can directly drive the latch and sliding block to elastically retract and compress the spring. The spring deforms, generating a restoring force. When the protective cover closes, the slot and the horizontal section of the latch are aligned, the resistance on the latch disappears, and it extends under the action of the spring, allowing the horizontal section of the latch to engage with the slot, thus locking the protective cover and preventing it from detaching from the housing. The spring has high elastic deformation capacity, is not easily damaged, and only the spring needs to be replaced after long-term use. Compared to the existing technology where the entire protective cover needs to be replaced if the latch is damaged, this solution significantly reduces maintenance costs.

[0012] Preferably, the limiting structure includes a slot provided on the sliding block, a through groove provided on the protective cover that faces the slot when the buckle is in the extended state, and a pin that simultaneously engages with the through groove and the slot to limit the relative movement of the sliding block and the protective cover.

[0013] Using the above solution, when the buckle extends, the pin simultaneously engages with both the slot and the through groove, restricting the relative movement between the buckle and the protective cover. When the protective cover needs to be removed, the pin is removed, allowing the buckle to easily and elastically extend and retract. Furthermore, the alignment of the through groove with the slot indicates whether the buckle is engaged with the slot, and the degree to which the horizontal section of the buckle is inserted into the slot can be determined, helping to determine if the spring is old and needs replacement.

[0014] Preferably, there is damping between the slot and / or through groove and the pin, which allows the pin to move relative to the slot and / or through groove only when the force applied to the pin exceeds a preset tension.

[0015] Using the above scheme, damping can prevent the pin from accidentally coming out and ensure the connection strength of the snap-fit ​​structure. The magnitude of the preset tension is determined by the magnitude of the damping.

[0016] Preferably, the pin is covered with a rubber layer.

[0017] Using the above scheme, the magnitude of damping is determined by the thickness or roughness of the rubber layer. When the pin type is selected, the thicker and rougher the rubber layer, the greater the damping.

[0018] Preferably, a positioning guide structure is provided between the buckle and the housing to facilitate the alignment of the buckle with the slot and the elastic retraction of the buckle during the closing of the protective cover.

[0019] Preferably, the positioning guide structure includes a guide groove provided on the side of the housing near the buckle for the horizontal section of the buckle to be inserted into, and a mating ramp provided on the guide groove and / or the horizontal section of the buckle for driving the buckle to elastically retract during the closing of the protective cover.

[0020] Using the above scheme, during the process of closing the protective cover, the horizontal section of the buckle is first inserted into the guide groove for positioning. Then, under the squeezing and sliding cooperation of the mating inclined surface, the buckle is driven to elastically retract and vertically guide downward, ensuring that the horizontal section of the buckle is aligned with the slot and does not shift.

[0021] This utility model, by adopting the above technical solution, has significant technical effects: the buckle is elastically telescopically mounted on the housing. When the protective cover needs to be removed, the limiting structure on the buckle is released, causing the buckle to elastically retract and disengage from the slot, allowing the protective cover to be removed. Conversely, when the protective cover needs to be installed, the limiting structure on the buckle is released. During the closing process of the protective cover, the buckle elastically retracts horizontally and vertically inserts into the opening of the housing as the protective cover closes. When the protective cover and housing come into contact and close, the horizontal section of the buckle aligns with the slot, and the buckle elastically extends and resets, thus achieving the buckle and slot engagement. Finally, the limiting structure restricts the movement of the buckle relative to the protective cover, thereby ensuring that the protective cover is closed on the housing. The elastic deformation capacity of the spring is much greater than that of the buckle itself. By using the spring force to replace the buckle's own elastic deformation capacity, and selecting a suitable spring, the risk of damage to the buckle and housing can be greatly reduced. Combined with the pin, it can also reduce the difficulty of disassembly, while ensuring that the buckle and housing are not damaged during disassembly, making the protective structure easy to install and remove and not easily damaged. Attached Figure Description

[0022] Figure 1 It is an isometric drawing of the protective structure in the prior art;

[0023] Figure 2 This is a split diagram of the protective structure in the prior art;

[0024] Figure 3 This is an isometric view of a protective structure for a busbar in one embodiment;

[0025] Figure 4 This is an exploded view of a protective structure for a busbar in one embodiment;

[0026] Figure 5 This is a top view of a protective structure for a busbar in one embodiment;

[0027] Figure 6 yes Figure 5 Sectional view at point AA;

[0028] Figure 7 yes Figure 6 Enlarged view of point B in the image;

[0029] Figure 8 This is a magnified view of a portion of a protective structure for a busbar in an embodiment, showing the buckle elastically retracting to the horizontal section and disengaging from the slot.

[0030] The parts referred to by the numbers in the above attached figures are as follows: 1. Busbar; 2. Housing; 3. Opening; 4. Protective cover; 5. Slot; 6. Buckle; 601. Vertical section; 602. Horizontal section; 7. Sliding block; 8. Sliding groove; 9. Spring; 10. Slot; 11. Through groove; 12. Pin; 13. Guide groove; 14. Mating bevel; 15. Notch. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] Example

[0033] A protective structure for busbars, as shown in the reference. Figures 1 to 8 The system includes a housing 2 located outside the busbar 1. Openings 3 are provided at both ends of the housing 2 located on the busbar 1. Protective covers 4 are detachably connected to the openings 3 via a snap-fit ​​structure. The bottom of the protective cover 4 overlaps with the upper surface of the housing 2 to prevent the protective cover 4 from falling further and to block the openings 3. The snap-fit ​​structure further restricts the protective cover 4 from detaching from the housing 2.

[0034] The snap-fit ​​structure includes a slot 5 on the side wall of the housing 2, and a buckle 6 on the side wall of the protective cover 4 that is horizontally elastically telescopically arranged along the closing direction of the protective cover 4. The vertical section 601 of the buckle 6 is perpendicular to the bottom of the protective cover 4, and the horizontal section 602 of the buckle 6 protrudes vertically from the end of the vertical section 601 away from the protective cover 4, and the horizontal section 602 of the buckle 6 protrudes towards the slot 5. A sliding block 7 is vertically protruding from the end of the buckle 6 near the protective cover 4 away from the protruding direction of the horizontal section 602. A notch 15 for the buckle 6 to extend and retract is recessed on the side wall of the protective cover 4. A sliding groove 8 is recessed at the bottom of the notch 15 for the sliding block 7 to be inserted into and moved away from the buckle 6. A spring 9 is arranged between the sliding groove 8 and the sliding block 7 along the moving direction of the sliding block 7 to drive the buckle 6 to be in the extended state under normal conditions.

[0035] A guide groove 13 is provided on the side of the housing 2 near the protective cover 4 for the horizontal section 602 of the buckle 6 to be inserted. The guide groove 13 and / or the horizontal section 602 of the buckle 6 are provided with a mating inclined surface 14 that drives the buckle 6 to elastically retract during the closing of the protective cover 4.

[0036] A limiting structure is provided between the buckle 6 and the protective cover 4 to restrict the elastic retraction of the buckle 6 when the horizontal section 602 of the buckle 6 is inserted into the slot 5. The limiting structure includes a slot 10 provided on the sliding block 7, and a through groove 11 provided on the protective cover 4 that is directly opposite the slot 10 when the buckle 6 is in the extended state. It also includes a pin 12 with one end passing through the through groove 11 and being inserted into the slot 10, and the other end located above the protective cover 4. The pin 12 is covered with a rubber layer, so that there is damping between the slot 10 and / or the through groove 11 and the pin 12, preventing the pin 12 from accidentally coming out and ensuring the connection strength of the buckle structure.

[0037] During installation, an external force greater than the preset tension is applied to the pin 12. After overcoming the damping, the pin 12 is removed. During the closing of the protective cover 4, the horizontal section 602 of the buckle 6 is aligned with the guide groove 13. Under the action of the mating inclined surface 14, the buckle 6 descends vertically while retracting horizontally elastically until the horizontal section 602 of the buckle 6 is directly opposite the groove 5. At this time, the bottom of the protective cover 4 abuts against the upper end face of the housing 2. The buckle 6 extends and resets under the action of the spring 9, so that the horizontal section 602 of the buckle 6 is inserted into the groove 5, restricting the protective cover 4 from detaching from the housing 2. At this time, the slot 10 moves to be directly opposite the through groove 11, and the pin 12 is inserted to restrict the relative movement between the buckle 6 and the protective cover 4, ensuring that the protective cover 4 is snapped onto the housing 2.

[0038] During disassembly, remove the pin 12. Since the clip 6 is located on the side wall of the protective cover 4 and the protective cover 4 is located above the housing 2, simply push the clip 6 to make it elastically retract until the horizontal section 602 of the clip 6 disengages from the slot 5, and then remove the protective cover 4. This eliminates the need for forceful disassembly, reducing the possibility of damage to the clip 6 and the housing 2.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A protective structure for a busbar, comprising a housing (2) arranged outside the busbar (1), openings (3) arranged at both ends of the busbar (1) where the housing (2) is located, and a protective cover (4) which can open or close the openings (3), and the protective cover (4) and the housing (2) are detachably connected through a clamping structure, characterized in that: The snap-fit ​​structure includes a slot (5) provided on the housing (2) and a buckle (6) on the side wall of the protective cover (4) that is horizontally elastically telescopically provided along the closing direction of the protective cover (4). During the closing process of the protective cover (4), the buckle (6) retracts horizontally and vertically and inserts into the opening (3) of the housing (2). When the protective cover (4) is closed, the buckle (6) extends horizontally and elastically so that the horizontal section (602) of the buckle (6) is inserted into the slot (5). A limiting structure is provided between the buckle (6) and the protective cover (4) to restrict the retraction of the buckle (6) when the horizontal section (602) of the buckle (6) is inserted into the slot (5). ​ 2. A protective structure for a busbar according to claim 1, characterized in that: The protective cover (4) has a recessed notch (15) for the extension and retraction of the buckle (6). The end of the vertical section (601) of the buckle (6) away from the horizontal section (602) has a sliding block (7) protruding from the horizontal section (602). The bottom of the notch (15) has a recessed sliding groove (8) for the sliding block (7) to be inserted into and moved away from the buckle (6). A spring (9) is provided between the sliding groove (8) and the sliding block (7) along the moving direction of the sliding block (7) to drive the buckle (6) to be in the extended state under normal conditions.

3. A protective structure for a busbar according to claim 2, wherein: The limiting structure includes a slot (10) provided on the sliding block (7), a through groove (11) provided on the protective cover (4) that is opposite to the slot (10) when the buckle (6) is in the extended state, and a pin (12) that is simultaneously inserted into the through groove (11) and the slot (10) to limit the relative movement of the sliding block (7) and the protective cover (4).

4. The protection structure for busbars according to claim 3, characterized in that: There is damping between the slot (10) and / or through slot (11) and the pin (12) so that the pin (12) can move relative to the slot (10) and / or through slot (11) only when the force applied to the pin (12) exceeds the preset tension.

5. A protective structure for a busbar according to claim 4, wherein: The pin (12) is covered with a rubber layer.

6. The protective structure for busbars according to claim 1, wherein: A positioning guide structure is provided between the buckle (6) and the housing (2) to facilitate the alignment of the buckle (6) with the slot (5) and the elastic retraction of the buckle (6) during the closing of the protective cover (4).

7. A guard structure for a busbar according to claim 6, wherein: The positioning guide structure includes a guide groove (13) provided on the side of the housing (2) near the buckle (6) for the horizontal section (602) of the buckle (6) to be inserted into, and a mating ramp (14) provided on the guide groove (13) and / or the horizontal section (602) of the buckle (6) to drive the buckle (6) to retract elastically during the closing of the protective cover (4).

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