Clamps for cable installation

Abstract

The present invention solves the problem of the limited pulling direction of photovoltaic module cables caused by the use of fixed-angle clamps. It relates to the technical field of cable clamps, and in particular to a clamp for cable installation, including a line clamp clamped on the photovoltaic module, a clamp plate and a closing block hinged at both ends of the clamp plate, the closing block being in the shape of a right-angled trapezoid, and its thickness gradually decreasing from front to back. An additional assembly is provided between the line clamp and the clamp plate, and a bracket is inserted into the interior of the line clamp for rotation. The end of the bracket passes through the middle of the additional assembly and extends into the interior of the closing block. The additional assembly includes a gear sleeve fixed to the line clamp, the interior of the gear sleeve is engaged with a gear turntable, and the outer side of the gear turntable is provided with a threaded ring. When the gear turntable is moved along the front-back axis, the position of the end of the bracket in the closing block is changed to adjust the inclination angle of the closing block. The present invention enables the clamp to adjust accordingly with the pulling direction of the cable and can effectively avoid the cable from being detached from the clamp plate.

Description

Technical Field

[0001] The present invention relates to the technical field of cable clamps, in particular to a clamp used for cable installation. Background Art

[0002] The cable fixation between photovoltaic modules has gradually evolved from no bundling at the beginning to bundling with steel wire or clamping with auxiliary clamps, so as to effectively prevent the displacement of the cables due to external force or deadweight.

[0003] Among them, the fixing method of tying steel wires is laborious and unsightly. The auxiliary clamp is usually composed of two clamping structures for clamping the photovoltaic module frame and the cable respectively. In addition, under normal circumstances, the two clamping structures are assembled as one piece. In addition, the photovoltaic module itself has only four sides for clamping the frame of the clamping structure. Therefore, the cable pulled by the integrated clamp clamped on the photovoltaic module frame can only be routed in horizontal and vertical directions. This makes the cable routing direction limited to the fixed angle of the clamp and cannot be adjusted according to actual needs. As a result, the cable may be stretched along an undesirable path, resulting in uneven distribution of cable tension. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention aims to provide a clamp for cable installation to solve the problem of the use of a fixed-angle clamp proposed in the background art, which results in a limited pulling direction of the photovoltaic module cable.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a clamp for cable installation, comprising a line clamp clamped on a photovoltaic module, a clamping plate and a closing block hinged at both ends of the clamping plate, the closing block being in the shape of a right-angled trapezoid, the thickness of which gradually decreases from front to back in a direction away from the clamping plate to approaching the clamping plate, an additional assembly is provided between the line clamp and the clamping plate, a bracket is rotatably inserted into the interior of the line clamp, an end of the bracket passes through the middle of the additional assembly and extends into the interior of the closing block, and a guide groove connected to the end of the bracket is provided on the side of the closing block;

[0006] The mounting assembly includes a gear sleeve fixed to the line card, the interior of the gear sleeve is meshed with a gear turntable, and the outer side of the gear turntable is provided with a threaded ring. When the gear turntable is moved along the front and rear axial directions, the position of the bracket end in the closing block is changed to adjust the inclination angle of the closing block;

[0007] The gear sleeve includes an inner gear ring, a solid ring and a docking plate arranged in sequence from back to front along the direction from close to the line clamp to close to the splint, the external thread of the docking plate is matched with the internal thread of the threaded ring, and the gear turntable includes a toothed plate, an extension column and a circular plate structure arranged in sequence from back to front along the direction from close to the line clamp to close to the splint, when the circular plate structure is in contact with the docking plate and is sleeved on the surfaces of the two using the threaded ring, the distance between the opposite sides of the two closing blocks gradually decreases from back to front along the direction from close to the splint to away from the splint;

[0008] The inner radius of the solid ring is larger than the root circle radius of the inner gear ring, and the inner diameter of the docking plate is smaller than the root circle radius of the inner gear ring;

[0009] The clamping plate includes a semicircular ring ferrule with an inner diameter that matches the cable diameter, and two connecting blocks arranged up and down are installed between the semicircular ring ferrule and the circular plate structure;

[0010] The bracket includes a T-shaped column that is rotatably inserted into the inside of the line card, and the front end of the T-shaped column passes along the central axis of the gear sleeve and the gear turntable. A fork plate is installed at the front end of the T-shaped column. When the front side of the gear plate is in contact with the back side of the circular plate structure, the distance between the rear wall of the fork plate and the central axis of the back side of the semi-circular ring sleeve is consistent with the thickness of the solid ring.

[0011] Preferably, the inclination of the guide groove is consistent with the inclination of the inclined surface of the closing block, and a fitting plate is installed on the opposite side of the two closing blocks. When the opposite sides of the two closing blocks are parallel, the distance between the two fitting plates is not less than the inner diameter of the splint.

[0012] Preferably, a telescopic structure is installed at the end of the bifurcated plate, and a roller is rotatably sleeved on the end of the telescopic structure.

[0013] Preferably, the photovoltaic assembly consists of a photovoltaic body and a frame wrapped around the edge of the photovoltaic body, and a thickness difference is formed between the frame and the photovoltaic body, and a wire groove is provided on the frame.

[0014] Preferably, the line card includes a card frame, and an elastic clip is embedded in the card frame;

[0015] The elastic clamp is composed of an arc portion, rack portions connected to both ends of the bottom of the arc portion, and an inlet portion connected to the bottom of the two rack portions from top to bottom along the direction away from the photovoltaic component to the direction close to the photovoltaic component.

[0016] Preferably, the spacing between the two rack portions is smaller than the inner diameter of the arc portion, the spacing on opposite sides of the two entrance portions gradually increases from top to bottom in the direction from close to the rack portion to away from the rack portion, the spacing between the bottoms of the two entrance portions is greater than the thickness of the frame, and the spacing between their tops is consistent with the thickness of the photovoltaic body.

[0017] By means of the above technical solution, the present invention provides a clamp for cable installation, which has at least the following beneficial effects:

[0018] 1. The present invention coordinates the gear sleeve, gear turntable and threaded ring of the additional components so that the clamp can be adjusted accordingly with the pulling direction of the cable, effectively improving its adaptability, the diversity of cable pulling directions and the flexibility of wiring.

[0019] 2. Since the present invention has a closing block hinged on the splint, after the cable is clamped in the splint, the gear turntable is squeezed backward so that the gear plate therein and the internal gear ring in the gear sleeve engage with each other, and the threaded ring is set on the outer surface of the docking plate and the circular plate structure to lock the two. This can stably maintain the state of the two closing blocks against the cable along the opening of the splint, thereby effectively preventing the cable from detaching from the splint when the cable clamped by the splint shakes subsequently.

[0020] 3. The present invention sets the threaded ring on the docking plate and the circular plate structure. This action can simultaneously lock the direction of the clamping plate and the angle of the closing block after rotation, thereby increasing the linkage in structure and function.

[0021] 4. When the cable installation clamp is used to fix the cable, there is no need to drill holes in the frame of the photovoltaic module. It is only necessary to put the wire clamp on the frame of the photovoltaic module and then clip the cable into the slot of the clamp. It is easier to achieve cable connection without causing damage to the frame of the photovoltaic module.

[0022] 5. The present invention first contacts the frame through the two entrance parts, and the entire elastic clamp will be expanded, so that the motor distance between the two racks is greater than the thickness of the frame. Therefore, in the process of inserting the wire clip on the frame of the photovoltaic module, the tip of the rack does not contact the frame, which can effectively avoid the wear of its tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the line card of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the additional components of the present invention;

[0027] Figure 4 A schematic diagram of the structure of the position change between the gear plate and the internal gear ring of the present invention;

[0028] Figure 5 It is a schematic structural diagram of the meshing of the tooth plate and the internal gear ring of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the bracket of the present invention;

[0030] Figure 7 Schematic diagram of the installation structure of the closing block and the fitting plate of the present invention;

[0031] Figure 8 It is a schematic structural diagram of the splint and closing block of the present invention.

[0032] In the picture:

[0033] 1. Photovoltaic modules;

[0034] 2. Line clamp; 201. Card frame; 202. Elastic clamp; 2021. Arc portion; 2022. Rack portion; 2023. Entrance portion;

[0035] 3. Splint; 301. Semi-circular ring sleeve; 302. Connecting block;

[0036] 4. Closing block; 401. Guide groove; 402. Fitting plate;

[0037] 5. Additional components; 501, gear sleeve; 5011, internal gear ring; 5012, solid ring; 5013, docking plate; 502, gear turntable; 5021, tooth plate; 5022, extension column; 5023, circular plate structure; 503, threaded ring;

[0038] 6. Bracket; 601. T-shaped column; 602. Fork plate; 603. Telescopic structure; 604. Roller. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] Example 1

[0041] See also Figures 1-8This embodiment proposes a clamp for cable installation, which can rotate according to the pulling direction of the cable to be clamped, and effectively prevent the cable from being detached from the clamp after the clamp is clamped into the cable. The basic structure of the cable installation clamp consists of a wire clamp 2 and a clamp 3, wherein the wire clamp 2 is used to clamp on the photovoltaic module 1, and the inner diameter and opening size of the clamp 3 are consistent with the diameter of the cable to be clamped. Therefore, the clamp 3 can be used for adaptive clamping of the cable. In actual application, by clamping the wire clamp 2 on the edge of the photovoltaic module 1 and clamping the cable to be clamped into the clamp 3, the basic fixation of the cable on the photovoltaic module 1 can be achieved. In addition, on this basis, a closing block 4 hinged at both ends of the clamp 3, an additional component 5 provided between the wire clamp 2 and the clamp 3, and a bracket 6 rotatably plugged into the inside of the wire clamp 2 are also provided, and the end of the bracket 6 passes through the middle of the additional component 5 and extends to the inside of the closing block 4.

[0042] The mounting assembly 5 includes a gear sleeve 501 fixed to the line card 2. The gear sleeve 501 includes an internal gear ring 5011, a solid ring 5012, and a docking plate 5013, arranged in sequence from back to front. The gear sleeve 501 is internally meshed with a gear turntable 502. The gear turntable 502 includes a toothed plate 5021, an extension column 5022, and a circular plate structure 5023, arranged in sequence from back to front. The outer side of the gear turntable 502 is provided with a threaded ring 503, and the external threads of the docking plate 5013 match the internal threads of the threaded ring 503. When the circular plate structure 5023 and the docking plate 5013 are fitted together and the threaded ring 503 is used to fit over their surfaces, the distance between the opposite sides of the two closing blocks 4 gradually decreases from back to front. The side of the closing block 4 is provided with a guide groove 401 connected to the end of the bracket 6. When the clamp is not in use, the threaded ring 503 does not contact the docking plate 5013, so that there is no front-to-back axial locking restriction and rotation restriction between the gear sleeve 501 and the gear turntable 502. Therefore, when a forward pulling force or a backward pushing force is applied to the whole composed of the gear turntable 502, the clamp 3 and the closing block 4, the relative position relationship between the whole and the bracket 6 can be adjusted.

[0043] Following the above, if Figure 3 and Figure 4 As shown, when the gear turntable 502 is pulled forward to control the front of the tooth plate 5021 to fit with the back of the docking plate 5013, the end of the bracket 6 is located on the rear side of the guide groove 401, and the opposite sides of the two closing blocks 4 are adjusted to be parallel to each other, while the opposite sides are inclined. At this time, the distance between the opposite sides of the two closing blocks 4 is greater than the inner diameter of the splint 3. Therefore, the cable can be inserted into the range of the splint 3 along the opening between the two closing blocks 4 without hindrance.

[0044] After this, by pushing the gear turntable 502 backward, the clamping plate 3 and the closing block 4 move backward accordingly, and based on this, the end of the bracket 6 moves forward relative to the guide slot 401. In addition, because the closing block 4 is in the shape of a right-angled trapezoid, its thickness gradually decreases from front to back. As the end of the bracket 6 moves forward in the guide slot 401, it generates a lateral force along the inclined surfaces on opposite sides of the two closing blocks 4, causing the closing block 4 to rotate along the point of hinge connection with the clamping plate 3. It is set that when the tooth plate 5021 in the gear turntable 502 and the inner gear ring 5011 in the gear sleeve 501 are engaged with each other, the docking plate 5013 and the circular plate structure 5023 are fitted with each other, and then the threaded ring 503 is rotated backward to be sleeved on the outer surface of the docking plate 5013 and the circular plate structure 5023, so as to achieve the locking of the gear turntable 502 and the gear sleeve 501, and stably maintain the state of the two closing blocks 4 against the cable along the opening of the clamping plate 3, so as to effectively prevent the cable from detaching from the clamping plate 3 when the cable clamped by the clamping plate 3 shakes subsequently.

[0045] It is worth mentioning that when the threaded ring 503 is out of contact with the docking plate 5013 and the tooth plate 5021 is out of engagement with the inner gear ring 5011, by applying rotational force to the gear turntable 502, it is caused to rotate along the gear sleeve 501, which can drive the clamp 3 to follow the adjustment angle, so that the clamp can follow the pulling direction of the cable and adjust accordingly, effectively improving its adaptability.

[0046] In combination with the above, it can be seen that after the direction of the splint 3 is adjusted and the closing block 4 is adjusted to a state of pressing the cable, by putting the threaded ring 503 on the docking plate 5013 and the circular plate structure 5023, this action can simultaneously achieve locking of the direction of the splint 3 and the angle of the closing block 4 after rotation.

[0047] Example 2

[0048] The inner radius of the solid ring 5012 is larger than the root radius of the inner gear ring 5011, while the inner radius of the docking plate 5013 is smaller than the root radius of the inner gear ring 5011. The back of the inner gear ring 5011 is fixedly connected to the front of the line card 2. This ensures that after the threaded ring 503 is separated from the docking plate 5013, the toothed plate 5021 can only move within the inner circle of the solid ring 5012 and the inner gear ring 5011.

[0049] Example 3

[0050] The inclination of the guide slot 401 is consistent with that of the inclined surface of the closing block 4, ensuring that when the end of the bracket 6 moves relative to the path of the guide slot 401, it effectively drives the closing block 4 to rotate along the hinge with the clamping plate 3. A mating plate 402 is installed on the opposite side of each closing block 4. When the opposite sides of the two closing blocks 4 are parallel, the spacing between the two mating plates 402 is no less than the inner diameter of the clamping plate 3. The mating plates 402 have an arc-shaped depression on their surface. When the two closing blocks 4 press against the surface of the clamped cable, the arc-shaped depression on the surface of the mating plates 402 can seamlessly fit the cable surface, increasing the contact area with the cable surface and improving the limiting effect.

[0051] Example 4

[0052] Bracket 6 includes a T-shaped column 601 that is rotatably inserted into the interior of line card 2. The front end of T-shaped column 601 passes along the central axis of gear sleeve 501 and gear turntable 502. T-shaped column 601 is inseparable from line card 2, but can rotate, so it does not hinder the angle adjustment of clamping plate 3. A bifurcated plate 602 is installed at the front end of T-shaped column 601. When the front of tooth plate 5021 is in contact with the back of circular plate structure 5023, the distance between the rear wall of bifurcated plate 602 and the central axis of the back of semicircular ring sleeve 301 is consistent with the thickness of solid ring 5012. A telescopic structure 603 is installed at the end of bifurcated plate 602. The end of telescopic structure 603 is rotatably sleeved with roller 604. The length of telescopic structure 603 can be adjusted according to the rotation angle of closing block 4, thereby enhancing the linkage between the rotation of bracket 6 and closing block 4.

[0053] The clamping plate 3 includes a semicircular ferrule 301 with an inner diameter that matches the diameter of the cable. Two vertically arranged connecting blocks 302 are installed between the semicircular ferrule 301 and the circular plate structure 5023. When the clamping plate 3, the closing block 4, and the gear turntable 502 move axially back and forth, sufficient space is provided for the rear end of the bifurcated plate 602 to move.

[0054] Example 5

[0055] Photovoltaic module 1 consists of a photovoltaic body and a frame wrapped around the edge of the photovoltaic body, with a thickness difference formed between the frame and the photovoltaic body, and a wire groove is provided on the frame. The morphological and structural characteristics of photovoltaic module 1 are prior art. Wire clip 2 includes a card frame 201, and an elastic clip 202 is embedded in the interior of the card frame 201. The elastic clip 202 consists of, from top to bottom, an arc portion 2021, a rack portion 2022 connected to the two ends of the bottom of the arc portion 2021, and an entry portion 2023 connected to the bottom of the two rack portions 2022. The spacing between the two rack portions 2022 is less than the inner diameter of the arc portion 2021. The spacing between the opposite sides of the two entry portions 2023 gradually increases from top to bottom. The spacing between the bottoms of the two entry portions 2023 is greater than the thickness of the frame, and the spacing between their tops is consistent with the thickness of the photovoltaic body.

[0056] In accordance with the structural features of the above-mentioned line card 2 and the morphological and structural features of the photovoltaic module 1 itself, such as Figure 1 and Figure 2 As shown, the clamp uses the wire clip 2 to directly clamp onto the frame of the photovoltaic module 1. There is no need to drill holes in the frame of the photovoltaic module 1, so it will not cause damage to the frame of the photovoltaic module 1. When in use, the bottom opening of the elastic clip 202 is aligned with the set position on the frame of the photovoltaic module 1, and then the wire clip 2 is squeezed to force the entry portion 2023 into contact with the edge of the frame. Since the distance between the tops of the two entry portions 2023 is less than the thickness of the frame, as the squeezing continues, the entire elastic clip 202 will expand from the bottom upward. At this time, the distance between the two rack portions 2022 will be greater than the thickness of the frame. As a result, when the entire wire clip 2 is inserted into the frame of the photovoltaic module 1, the tip of the rack portion 2022 does not contact the frame of the photovoltaic module 1, thereby reducing wear on the rack portion 2022. Until the entrance portion 2023 is attached to the photovoltaic body, the distance between the two entrance portions 2023 will be restored to its original state under the elasticity and reset property of the elastic clip 202 itself, so that the entire elastic clip 202 is also restored to its original state. At this time, the tip of the rack portion 2022 is stuck in the wire groove on the frame, and the two entrance portions 2023 pass through the frame and are stuck on the photovoltaic body, thereby effectively avoiding the problem of subsequent wire card 2 being separated from the frame of the photovoltaic module 1 for no reason.

[0057] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A fixture for cable installation, comprising a cable clamp (2) clamped on a photovoltaic module (1), characterized in that: A clamping plate (3) and a closing block (4) hinged at both ends of the clamping plate (3) are also provided. The closing block (4) is in the shape of a right-angled trapezoid, and its thickness gradually decreases from front to back in the direction away from the clamping plate (3) to close to the clamping plate (3). An additional assembly (5) is provided between the line card (2) and the clamping plate (3). A bracket (6) is rotatably inserted into the interior of the line card (2). The end of the bracket (6) passes through the middle of the additional assembly (5) and extends into the interior of the closing block (4). A guide groove (401) connected to the end of the bracket (6) is provided on the side of the closing block (4). The mounting assembly (5) includes a gear sleeve (501) fixed on the line card (2), the gear sleeve (501) is internally meshed with a gear turntable (502), and the outer side of the gear turntable (502) is provided with a threaded ring (503). When the gear turntable (502) is moved along the front-back axial direction, the position of the end of the bracket (6) in the closing block (4) is changed to adjust the inclination angle of the closing block (4); The gear sleeve (501) includes an inner gear ring (5011), a solid ring (5012) and a docking plate (5013) which are sequentially arranged from back to front along the direction from the line clamp (2) to the splint (3); the outer thread of the docking plate (5013) is matched with the inner thread of the threaded ring (503); the gear turntable (502) includes a toothed plate (5021), an extension column (5022) and a circular plate structure (5023) which are sequentially arranged from back to front along the direction from the line clamp (2) to the splint (3); when the circular plate structure (5023) and the docking plate (5013) are fitted and sleeved on the surfaces of the two using the threaded ring (503), the spacing between the opposite sides of the two closing blocks (4) gradually decreases from back to front along the direction from the splint (3) to the splint (3); The inner radius of the solid ring (5012) is greater than the tooth root radius of the inner gear ring (5011), and the inner diameter of the docking plate (5013) is smaller than the tooth root radius of the inner gear ring (5011); The clamping plate (3) comprises a semicircular ring ferrule (301) whose inner diameter matches the diameter of the cable, and two connecting blocks (302) arranged up and down are installed between the semicircular ring ferrule (301) and the circular plate structure (5023); The bracket (6) includes a T-shaped column (601) that is rotatably plugged into the interior of the line card (2), and the front end of the T-shaped column (601) passes along the central axis of the gear sleeve (501) and the gear turntable (502). A bifurcation plate (602) is installed at the front end of the T-shaped column (601). When the front face of the gear plate (5021) is in contact with the back face of the circular plate structure (5023), the distance between the rear wall of the bifurcation plate (602) and the central axis of the back face of the semicircular ring sleeve (301) is consistent with the thickness of the solid ring (5012).

2. The clamp for cable installation according to claim 1, characterized in that: The inclination of the guide groove (401) is consistent with the inclination of the inclined surface of the closing block (4), and a fitting plate (402) is installed on the opposite side of the two closing blocks (4). When the opposite sides of the two closing blocks (4) are parallel, the distance between the two fitting plates (402) is not less than the inner diameter of the clamping plate (3).

3. The clamp for cable installation according to claim 1, characterized in that: A telescopic structure (603) is installed at the end of the bifurcated plate (602), and a roller (604) is rotatably sleeved on the end of the telescopic structure (603).

4. The clamp for cable installation according to claim 1, characterized in that: The photovoltaic assembly (1) consists of a photovoltaic body and a frame wrapped around the edge of the photovoltaic body, with a thickness difference formed between the frame and the photovoltaic body, and a wire groove is provided on the frame.

5. The clamp for cable installation according to claim 1, characterized in that: The line card (2) comprises a card frame (201), and an elastic clip (202) is embedded in the interior of the card frame (201); The elastic clamp (202) is composed of, from top to bottom, a circular arc portion (2021), rack portions (2022) connected to both ends of the bottom of the circular arc portion (2021), and an inlet portion (2023) connected to the bottoms of the two rack portions (2022), in a direction from far away from the photovoltaic assembly (1) to close to the photovoltaic assembly (1).

6. The clamp for cable installation according to claim 5, characterized in that: The spacing between the two rack portions (2022) is smaller than the inner diameter of the arc portion (2021), and the spacing between the two opposite sides of the entrance portions (2023) gradually increases from top to bottom in a direction from close to the rack portion (2022) to away from the rack portion (2022). The spacing between the bottoms of the two entrance portions (2023) is greater than the thickness of the frame, and the spacing between their tops is consistent with the thickness of the photovoltaic body.

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