Assembled photovoltaic knife switch

Abstract

The utility model relates to an assembled photovoltaic knife switch, which comprises at least two shells, the shells are connected through splice plates, each shell is internally provided with a contact knife support, a static contact seat and a contact knife rotationally connected to the contact knife support, each splice plate is provided with a clamping groove matched with the contact knife, and the static contact seat is provided with a clamping groove matched with the static contact seat. Mounting holes are formed in the sides, corresponding to the splice plates, of the contact knives, screw holes corresponding to the mounting holes in the contact knives are formed in the two side walls of the clamping groove, and the mounting holes are connected with the corresponding screw holes through connecting pieces. According to the utility model, the modular design is realized by adopting a mode that the at least two shells are connected through the splice plates, so that each module can be independently processed without overall disassembly when parts are installed and replaced, and the installation and maintenance efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic equipment, in particular to a assembled photovoltaic knife switch. Background Art

[0002] In a photovoltaic power generation system, as a key control and protection device, the stability of the performance and the reliability of the structure of the photovoltaic knife switch are crucial for the safe operation of the whole system. Traditional photovoltaic knife switches mostly adopt an integral design, that is, all components such as the contact blade, the fixed contact base, the bracket, etc. are fixedly connected together during manufacturing to form an inseparable whole. Although this design simplifies the installation process to a certain extent, there are many inconveniences in actual use. Content of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide an assembled photovoltaic knife switch which is convenient for installation and maintenance, has a firm structure and is easy to operate.

[0004] To achieve the above purpose, the utility model adopts such an assembled photovoltaic knife switch, which includes at least two shells, the shells are connected by splicing plates, each shell is internally provided with a contact blade bracket, a fixed contact base and a contact blade rotatably connected to the contact blade bracket, the splicing plates are all provided with clamping grooves matched with the contact blades, the contact blades are all provided with mounting holes on one side corresponding to the splicing plates, screw holes corresponding to the mounting holes on the contact blades are arranged on both side walls of the clamping grooves, and the mounting holes and the corresponding screw holes are all connected by connecting pieces.

[0005] Compared with the prior art, the beneficial effects of the above structure are as follows: by adopting the connection mode of at least two shells through splicing plates, modular design is realized, so that when installing and replacing components, each module can be processed separately without overall disassembly, thus greatly improving the installation and maintenance efficiency. And clamping grooves matched with the contact blades are arranged on the splicing plates, mounting holes are arranged on the contact blades, and the contact blades are fixed in the clamping grooves by matching with the connecting pieces. This structure not only simplifies the installation process, but also enhances the connection strength between the contact blade and the shell. Moreover, by adopting modular design, the number of shells can be increased or decreased according to actual needs.

[0006] The utility model is further configured such that the contact knife bracket is arranged opposite to the static contact seat, the contact knife bracket includes a bracket bottom plate and two bracket contact pieces arranged on the bracket bottom plate and bent upwards relatively, one end of the contact knife is correspondingly arranged between the two bracket contact pieces, the other end of the contact knife has a handle formed by bending upwards, the two bracket contact pieces and the contact knife correspondingly arranged between the two bracket contact pieces are both provided with a through groove, and a rotating shaft is installed in the through groove. By arranging one end of the contact knife between the two bracket contact pieces and connecting them through the rotating shaft in the through groove, the contact knife is more stable when rotating, and the shaking and friction are reduced, thereby improving the stability and reliability of the contact knife, and the other end of the contact knife is designed as a handle bent upwards, so that the operator can easily rotate the contact knife through the handle to realize the closing and opening of the switch.

[0007] The utility model is further configured that the static contact seat includes a static contact seat bottom plate and two static contact sheets arranged on the static contact seat bottom plate and bent upwards relatively, and a gate for plugging and unplugging the other end of the contact knife is provided between the two static contact sheets. By providing the gate between the static contact sheets, a clear plugging and unplugging path is provided for the other end of the contact knife, so that the contact knife can smoothly enter or exit during the plugging and unplugging process, reducing the plugging and unplugging resistance, reducing wear and tear, and extending the service life of the device.

[0008] The utility model is further configured that a first oblique clamp with two openings is provided between the two bracket contact pieces, and two first and second clamping grooves corresponding to each other are provided on the side wall of each bracket contact piece, and the opening of each first oblique clamp is respectively inserted into the first and second clamping grooves on the corresponding two bracket contact pieces, and abuts against the outer surface of the bracket contact piece, and the first and second clamping grooves are both located on both sides of the through grooves of the two bracket contact pieces. The design of the first oblique clamp makes the connection between the two bracket contact pieces more firm, effectively preventing loosening or displacement caused by vibration or external force, thereby enhancing the structural stability of the entire contact knife bracket.

[0009] The utility model is further configured that a second oblique clamp with two openings is provided between the two stationary contact pieces, and two third and fourth clamping grooves corresponding to each other are provided on the side wall of each stationary contact piece, and the opening of each second oblique clamp is respectively inserted into the third and fourth clamping grooves on the corresponding two stationary contact pieces, and abuts against the outer surface of the stationary contact piece. Through the close cooperation between the second oblique clamp and the third and fourth clamping grooves on the stationary contact piece, a stable connection between the stationary contact pieces is achieved, the strength and stability of the connection are significantly enhanced, and loosening or displacement caused by vibration or external force is prevented.

[0010] The present utility model is further configured such that the relative positions of the third card slot and the fourth card slot on the static contact piece are the same as the relative positions of the first card slot and the second card slot on the support contact piece. When the positions of the card slots are the same, installers can more easily identify and locate the corresponding card slots and clamps, thereby simplifying the installation process and reducing the possibility of incorrect installation.

[0011] The present utility model is further configured such that the housing includes a bottom shell and a cover plate covering the bottom shell. The bottom shell is respectively provided with a first installation groove and a second installation groove for fitting the contact knife support and the static contact seat. A contact knife groove is provided at the connection between the bottom shell and the cover plate corresponding to the contact knife. Through the first installation groove and the second installation groove on the bottom shell, the contact knife support and the static contact seat can be accurately fitted in the specified positions, making the internal structure more compact and having a higher integration degree.

[0012] The present utility model is further configured such that the bottom shell further includes a first wiring terminal and a second wiring terminal. The first wiring terminal is fixed at one end of the support bottom plate, and the second wiring terminal is fixed at one end of the static contact seat bottom plate. By respectively fixing the wiring terminals at one end of the support bottom plate and the static contact seat bottom plate, the electrical connection path is ensured to be clear and definite, which helps to reduce errors and confusion in electrical connections and improve the reliability and safety of the device.

[0013] The present utility model is further configured such that the connecting piece is a screw. Description of the Drawings

[0014] Figure 1 is a perspective view of an embodiment of the present utility model.

[0015] Figure 2 is a schematic structural view of the contact knife support, the static contact seat, the contact knife and the splicing plate of an embodiment of the present utility model.

[0016] Figure 3 is a schematic structural view of the contact knife of an embodiment of the present utility model.

[0017] Figure 4 is a schematic view of the cooperation between the contact knife and the splicing plate of an embodiment of the present utility model.

[0018] Figure 5 is a schematic structural view of the contact knife support and the static contact seat of an embodiment of the present utility model.

[0019] Figure 6 is a perspective view of the contact knife support structure of an embodiment of the present utility model.

[0020] Figure 7 is a perspective view of the static contact seat structure of an embodiment of the present utility model.

[0021] Figure 8 is a schematic structural view of the housing of an embodiment of the present utility model.

[0022] Figure 9 It is a schematic diagram of the internal structure of the housing of an embodiment of the present utility model. Specific embodiments

[0023] As Figures 1-9 shown, an embodiment of the present utility model provides a assembled photovoltaic knife switch, which includes at least two housings 1. The housings 1 are connected by splicing plates 2. Inside each housing 1, there are provided a knife contact support 3, a static contact seat 4, and a knife contact 5 rotatably connected to the knife contact support 3. The splicing plates 2 are each provided with a card slot 21 that cooperates with the knife contact 5. On one side of the knife contact 5 corresponding to the splicing plate 2, there are each provided mounting holes 51. On both side walls of the card slot 21, there are provided screw holes 210 corresponding to the mounting holes 51 on the knife contact 5. Between the mounting holes 51 and the corresponding screw holes 210, there are connected by screws 10. The screws 10 sequentially pass through the screw holes 210 on one side of the card slot 21, the mounting holes 51 on the knife contact 5, and the screw holes 210 on the other side of the card slot 21.

[0024] The knife contact support 3 and the static contact seat 4 are arranged oppositely. The knife contact support 3 includes a support bottom plate 31 and two support contact pieces 32 that are bent upward relatively on the support bottom plate 31. One end of the knife contact 5 is correspondingly arranged between the two support contact pieces 32. The other end of the knife contact 5 has a handle 52 formed by bending upward. Both the two support contact pieces 32 and the knife contact 5 correspondingly arranged between the two support contact pieces 32 are provided with through grooves 53. A rotating shaft 54 is installed in the through grooves 53.

[0025] The static contact seat 4 includes a static contact seat bottom plate 41 and two static contact pieces 42 that are bent upward relatively on the static contact seat bottom plate 41. Between the two static contact pieces 42, there is provided a gate 46 for inserting and unplugging the other end of the knife contact 5.

[0026] Between the two support contact pieces 32, there are provided two open first inclined clamps 33. On the side wall of each support contact piece 32, there are provided two corresponding first card slots 34 and second card slots 35. The openings of each first inclined clamp 33 are respectively inserted into the first card slots 34 and the second card slots 35 on the corresponding two support contact pieces 32 and abut against the outer side surfaces of the support contact pieces 32. The first card slots 34 and the second card slots 35 are both located on both sides of the through grooves 53 of the two support contact pieces 32. Specifically, the opening of the first first inclined clamp 33 is inserted and fixed in the first card slots 34 on the two support contact pieces 32, and at the same time, its outer part abuts against the outer side surface of the support contact piece 32. Similarly, the opening of the second first inclined clamp 33 is inserted and fixed in the second card slots 35 on the two support contact pieces 32 and also abuts against the outer side surface of the support contact piece 32.

[0027] There are two second inclined clamps 43 with openings between the two static contact pieces 42, and two corresponding third card slots 44 and fourth card slots 45 are provided on the side walls of each static contact piece 42. The openings of each second inclined clamp 43 are respectively inserted into the third card slots 44 and fourth card slots 45 on the corresponding two static contact pieces 42 and abut against the outer side surfaces of the static contact pieces 42. Specifically, the opening of the first second inclined clamp 43 is inserted and fixed in the third card slots 44 on the two static contact pieces 42, and at the same time, its outer part abuts against the outer side surface of the static contact piece 42. Similarly, the opening of the second second inclined clamp 43 is inserted and fixed in the fourth card slots 45 on the two static contact pieces 42 and also abuts against the outer side surface of the static contact piece 42. The relative positions of the third card slots 44 and fourth card slots 45 on the static contact piece 42 are the same as the relative positions of the first card slot 34 and second card slot 35 on the support contact piece 32.

[0028] The housing 1 includes a bottom case 11 and a cover plate 12 covering the bottom case 11. A first installation groove 111 for installing the contact knife support 3 and a second installation groove 112 for installing the static contact seat 4 are respectively provided on the bottom case 11. A contact knife groove 13 is provided at the connection between the bottom case 11 and the cover plate 12 corresponding to the contact knife 5.

[0029] The bottom case 11 further includes a first wiring terminal 6 and a second wiring terminal 7. The first wiring terminal 6 is fixed at one end of the support base plate 31, and the second wiring terminal 7 is fixed at one end of the static contact seat base plate 41.

[0030] It should be noted that only one set of the housing structure markings is detailed in the drawings, but the actual structure includes two sets, and the layout and structure of each set of the housing are the same as those in the detailed description.

[0031] Of course, in addition to the above embodiments, the present utility model can also have other various embodiments. Without departing from the essence of the technical solution of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. And if these changes or deformations are equivalent to the technical solutions in this patent, then these corresponding changes and deformations should all fall within the protection scope of the claims attached to the present utility model.

Claims

1. An assembled photovoltaic knife switch, characterized in that: The invention comprises at least two shells, which are connected by a splicing plate, wherein a contact knife bracket, a static contact head seat and a contact knife rotatably connected to the contact knife bracket are arranged in the shell, wherein a slot matching with the contact knife is arranged on the splicing plate, wherein the contact knife is provided with a mounting hole on one side of the corresponding splicing plate, wherein screw holes corresponding to the mounting holes on the contact knife are arranged on the two side walls of the slot, and the mounting holes and the corresponding screw holes are connected by a connecting piece.

2. The assembled photovoltaic knife switch according to claim 1, characterized in that: The contact knife bracket is arranged opposite to the static contact seat, and the contact knife bracket includes a bracket base plate and two bracket contact pieces arranged on the bracket base plate and bent upward relative to each other, one end of the contact knife is correspondingly arranged between the two bracket contact pieces, and the other end of the contact knife has a handle formed by bending upward, and the two bracket contact pieces and the contact knife correspondingly arranged between the two bracket contact pieces are both provided with a through groove, and a rotating shaft is installed in the through groove.

3. The assembled photovoltaic knife switch according to claim 2 is characterized in that: The stationary contact seat comprises a stationary contact seat bottom plate and two stationary contact pieces arranged on the stationary contact seat bottom plate and bent upwards relative to each other, and a gate for inserting and removing the other end of the contact knife is provided between the two stationary contact pieces.

4. The assembled photovoltaic knife switch according to claim 2 is characterized in that: A first oblique clamp with two openings is provided between the two bracket contact pieces, and two first and second clamping grooves corresponding to each other are provided on the side wall of each bracket contact piece. The opening of each first oblique clamp is respectively inserted into the first and second clamping grooves on the corresponding two bracket contact pieces, and abuts against the outer surface of the bracket contact piece. The first and second clamping grooves are both located on both sides of the through grooves of the two bracket contact pieces.

5. The assembled photovoltaic knife switch according to claim 3 is characterized in that: A second oblique clamp with two openings is provided between the two stationary contact pieces, and two corresponding third and fourth clamping grooves are provided on the side wall of each stationary contact piece. The opening of each second oblique clamp is respectively inserted into the third and fourth clamping grooves on the corresponding two stationary contact pieces, and abuts against the outer surface of the stationary contact piece.

6. The assembled photovoltaic knife switch according to claim 5, characterized in that: The relative positions of the third and fourth clamping slots on the stationary contact piece are the same as the relative positions of the first and second clamping slots on the bracket contact piece.

7. The assembled photovoltaic knife switch according to any one of claims 1 to 6, characterized in that: The shell includes a bottom shell and a cover plate arranged on the bottom shell, the bottom shell is respectively provided with a first mounting groove and a second mounting groove for embedding a contact blade bracket and a stationary contact head seat, and a contact blade groove is arranged at the connection between the bottom shell and the cover plate corresponding to the contact blade.

8. The assembled photovoltaic knife switch according to claim 7, characterized in that: The bottom shell also includes a first wiring terminal and a second wiring terminal. The first wiring terminal is fixed to one end of the bracket bottom plate, and the second wiring terminal is fixed to one end of the static contact seat bottom plate.

9. The assembled photovoltaic knife switch according to claim 1, characterized in that: The connecting piece is a screw.

Images