CN108173106B - Photovoltaic cable MC4 connects and dismantles pincers - Google Patents
Photovoltaic cable MC4 connects and dismantles pincers Download PDFInfo
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- CN108173106B CN108173106B CN201810020991.8A CN201810020991A CN108173106B CN 108173106 B CN108173106 B CN 108173106B CN 201810020991 A CN201810020991 A CN 201810020991A CN 108173106 B CN108173106 B CN 108173106B
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- 238000003825 pressing Methods 0.000 claims abstract description 53
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000006835 compression Effects 0.000 description 14
- 238000007906 compression Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 12
- 238000000926 separation method Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
- H01R43/26—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for engaging or disengaging the two parts of a coupling device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
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Abstract
The invention discloses a photovoltaic cable MC4 connector disassembling clamp, which comprises a clamp head and a clamp handle, wherein the clamp head is provided with a clamp handle, and the clamp handle is provided with a clamp head and a clamp handle: the pliers head consists of five parts, namely a pliers head shell, a pressing mechanism, a longitudinal moving mechanism, a transverse guide rail and a separating mechanism; the pliers handle is provided with a wire stripping opening, a range limiting adjusting device and a PVC handle; the two forceps handles are connected by a central supporting pin and a supporting spring, and the forceps handles are connected with a longitudinal moving mechanism of the forceps head by an arc-shaped pull rod. The MC4 joint disassembling pliers have the beneficial effects that: the convenience of disassembly of the MC4 joint is enhanced, and the male and female joints can be separated by one-time grasping, so that time and labor are saved, and the strength fatigue of joint materials is effectively reduced; the cable stripping device is relatively simple in structure, convenient to use, capable of stripping cables of common size, beneficial to effective application in complex field environments and suitable for large-scale popularization.
Description
Technical Field
The invention relates to a disassembling pliers, in particular to a disassembling pliers for a photovoltaic cable MC4 connector, and belongs to the technical field of assembling and disassembling of photovoltaic equipment.
Background
In recent years, the photovoltaic industry in China is rapidly developed, and the installed capacity is greatly increased. Over time, the photovoltaic industry is gradually going into a post photovoltaic age in which smooth and efficient operation of a power station is guaranteed, and daily operation and maintenance of the photovoltaic power station are the main tasks. The photovoltaic power station of operation of putting into production at the present stage, at its direct current side (including between the subassembly, subassembly to direct current collection flow box, subassembly or direct current collection flow box to dc-to-ac converter) mainly be through 1kV-1 4 mm's direct current cable connection, the cable both ends are generally connected by the dedicated MC4 standard joint of photovoltaic cable, and the mainstream collection flow box in the photovoltaic market has also extensively adopted MC4 to connect the mode with the dc-to-ac converter port, so although the MC4 joint of different producer or different models probably has the slight difference in outward appearance, nevertheless the size is all basically the same. In addition, the MC4 connector is convenient to plug and use, so that the MC4 connector becomes an actual specification and standard of a photovoltaic market, and the MC4 connector is mostly adopted by a direct current cable connector of a photovoltaic power station at the present stage. By 10 months of 2016, china has a cumulative installed capacity of about 95GW, first worldwide, calculated as about 4200 sets of MC4 connectors for photovoltaic cables for 1MW, and at least 3.9 hundred million sets of MC4 connectors are currently installed in China.
Daily operation and maintenance work of a photovoltaic power station is mainly divided into two parts: and (5) detecting and maintaining. The detection work of the photovoltaic power station mainly comprises related items such as hidden crack detection (IE), I-V test, electric energy quality detection, inverter efficiency detection, hot spot detection (ER), grounding resistance detection, grounding continuity detection and the like; the maintenance work of the photovoltaic power station mainly comprises related items such as component cleaning, device maintenance, device repair, device replacement and the like. When the above-mentioned various detection and maintenance works are performed, it is often necessary to disconnect the connection between the adjacent modules, the modules and the string outlet terminals, and between the string outlet terminals and the dc combiner box or inverter, or the like, that is, to separate the male connector from the female connector of the MC4 connector in the above-mentioned plugging state from each other, thereby disconnecting the connection.
Fig. 1 is a block diagram of an MC4 splice in a common connection state. In the figure, 101A and 101B are connecting wires at two ends of the connector, 102A and 102B are back-screwed caps screwed at two ends of the connector, 103A and 103B are threads at two ends of the street, 104 is a main body structure of the female connector, 105 is a matched metal terminal, 106 is a buckle groove, 107 is a male connector buckle, 108 is a rear end of the female connector, 109 is a female connector buckle jack, and 110 is a male connector. The metal terminal 105 inside the male joint and the female joint of the joint in the connection state is tightly connected, the static friction force is high, and the male joint buckle 107 is outwards disbursed, so that the outer side of the buckle is clamped on the outer side of the female joint buckle jack 109, and the buckle is prevented from being automatically loosened under the condition of being free from external pressure. Therefore, to disassemble the MC4 connector in the connected state into the separate male connector and female connector, the male connector buckle 107 needs to be pressed first to separate the outer side of the buckle 107 from the female connector buckle jack 109, then a reverse pulling force is applied to the male connector and the female connector simultaneously, when the reverse pulling force is greater than the static friction force between the male connector and the female connector, the male connector and the female connector move reversely, the buckle 107 is pulled out from the buckle jack 109, further the two metal terminals are pulled out and separated, and finally the male connector and the female connector are separated, so as to realize the disassembly of the MC4 terminal.
However, in the above-described joint removal process, it is necessary to pull out the male joint with an outward force while depressing the buckle 107. In practice, there are the following difficulties: 1. because of the limitation of the size of the joint (the width of the groove of the buckle is about 10mm, the width of a finger of a person is generally 15-20 mm), when an operator directly presses the buckle of the male joint by hand, accurate force application to the buckle in the groove is often difficult, and when the operator wears gloves, effective disassembly operation is more difficult; 2. when the MC4 joint is in a connection state, even if the buckle is pressed down, the static friction force between the male joint and the female joint is still large, and the two joints are pulled away directly by two hands, so that the MC4 joint is difficult to realize; 3. the field environment of the photovoltaic power station is complex, the MC4 connector and the connecting cable thereof are usually bundled on the photovoltaic bracket or positioned in a narrow gap between the assembly and the color steel tile roof, so that the place where the MC4 connector needs to be detached is usually narrow in space, and the disassembly operation is more difficult to realize conveniently and rapidly.
The existing MC4 joint dismounting device in the market is mostly a spanner-shaped fixed device, two hands are needed to use, the buckle ejector pin is smaller, the buckle is difficult to align accurately, the male joint and the female joint are still needed to be pulled out by two hands reversely and forcefully after the buckle is pressed down, and the use is inconvenient.
Disclosure of Invention
In order to solve the problems, the invention provides the photovoltaic cable MC4 connector disassembling pliers which can realize automatic pressing of a buckle and automatic separation of male and female connectors, are simple in structure and operation, have a wire stripping function for cables with common sizes, and are convenient for large-scale popularization and application in field environments.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the photovoltaic cable MC4 connector disassembly pliers comprise two pliers heads and two pliers handles:
the forceps head of the disassembling forceps mainly comprises five parts, namely a forceps head shell, a pressing mechanism, a longitudinal moving mechanism, a transverse guide rail and a separating mechanism. The clamp head shell is irregular in shape, the outer side of the bottom end of the left side of the clamp head shell is provided with a chamfer to form a buckle pressing arm, two clamping grooves in the middle of the clamp head shell form a groove structure for accommodating a pressing mechanism and a pressing spring, symmetrical clamping grooves in the right side of the clamp head shell form a longitudinal moving clamping groove for accommodating a longitudinal moving mechanism and a longitudinal ball, and symmetrical clamping grooves in the right side of the clamp head shell form a guide rail groove for accommodating a transverse guide rail and a guide rail spring; the buckle pressing arm, the clamp head shell and the clamp handles corresponding to the clamp arm are of an integrated structure, are positioned at the outermost side of the clamp head, are sharp at the front ends of the arms, and can effectively apply force to the male connector buckle in a buckle groove with a limited size to press down the buckle; the pressing mechanism is positioned in a groove in the middle of the clamp head and is connected with the clamp head shell through 4 symmetrically arranged pressing springs, and the pressing mechanism presses the outer surface of the rear end of the female joint under the pressure of the springs and presses and fixes the outer surface of the rear end of the female joint, so that the joint is prevented from rotating and is ready for disassembly; the rear end of the longitudinal moving mechanism is connected with the arc-shaped pull rod by a traction sliding block capable of moving up and down along the longitudinal sliding rail, the middle front part is provided with a smooth inclined surface structure, the upper and lower sides of the thin edges are arranged in the longitudinal moving clamping groove, a row of longitudinal balls are arranged between the lower end and the bottom of the clamping groove, and the dynamic friction force between the longitudinal balls and the bottom of the clamping groove is reduced when the longitudinal moving mechanism moves longitudinally; the guide rail is arranged in a guide rail groove on the right side of the clamp head shell, the upper part of the guide rail is provided with 2 guide rail springs which are symmetrically arranged, and a row of guide rail balls are arranged in the inner groove of the guide rail springs and are mutually clamped with the separating mechanism; the upper part of the separating mechanism is clamped on the guide rail, the middle part of the separating mechanism is provided with a smooth inclined surface structure, the left side of the lower part of the separating mechanism is provided with a chamfer, longitudinal pressure is applied to the male connector under the pressure of the guide rail, the smooth inclined surface structure of the separating mechanism is in mutual fit contact with the inclined surface structure of the longitudinal moving mechanism to form a movement direction conversion mechanism, and when the longitudinal moving mechanism moves forwards and backwards, the separating mechanism moves left and right under the interaction of the mutual pressure of the two inclined surfaces, so that the male connector is pushed to move rightwards.
The longitudinal moving mechanism of the photovoltaic cable MC4 connector dismounting pliers head is connected with the pliers handles through the arc-shaped pull rod mechanism, and the pull rod drives the longitudinal moving mechanism to realize longitudinal movement in the process of combining the pliers handles due to the fact that effective moments from the arc-shaped pull rod fulcrum pin holes to the two pin holes are different.
The working mode of the photovoltaic cable MC4 connector dismounting clamp is as follows: placing the MC4 joint to be disassembled in a connecting state at a proper position, aligning the pressing arm part of the buckle pressing arm part of the clamp head of the disassembly clamp with the joint buckle, and opening the clamp handle and the clamp head due to the existence of the supporting spring; the pliers handle and the pliers head are held by hand and are closed slowly, the compressing mechanism is firstly contacted with the rear end of the female connector, then the lower end of the moving mechanism is contacted with the male connector, at the moment, the pliers handle is continuously forced, the compressing spring and the guide rail spring are compressed simultaneously, the pliers head shell gradually transmits the longitudinal pressure to the compressing mechanism through the compressing spring, the longitudinal pressure is transmitted to the guide rail and the separating mechanism through the guide rail spring, the female connector is gradually compressed and fixed by the compressing mechanism, and meanwhile the male connector is compressed by the lower end of the separating mechanism; the clamp handle is continuously forced, the compression spring is continuously compressed, and the clamp pressing arm presses the clamp downwards after contacting the clamp until the clamp is pressed to the outermost side of the clamp lower than the upper edge of the bayonet jack; the pliers handle is continuously forced, and the effective moment at the two ends of the arc-shaped pull rod fulcrum is different, so that the front end of the pull rod drives the longitudinal moving mechanism to start moving longitudinally, and then the separating mechanism is pushed to move rightwards along the transverse guide rail, and when the separating mechanism moves along the guide rail because the separating mechanism already longitudinally compresses the male connector, the male connector is also pushed to move rightwards, so that the buckle is driven to be pulled out of the buckle jack, and meanwhile, the metal terminals of the male connector and the female connector are separated, namely the MC4 connector is detached from the male connector interface and the female connector interface automatically.
According to the photovoltaic cable MC4 connector dismounting clamp head, the clamp pressing arm and the clamp head shell are connected into a whole, the front end of the arm is sharp, the chamfer inclined plane is positioned on the outer side, and the clamp is beneficial to effectively pressing the clamp in a narrow clamp groove space.
The 4 compression springs in the groove of the clamp head compression mechanism of the photovoltaic cable MC4 connector dismounting clamp are symmetrically distributed in the rectangular top plane of the compression mechanism, and the 4 springs are made of the same material, are hard springs and have a larger elastic coefficient k1.
According to the photovoltaic cable MC4 connector disassembling pliers, a row of balls are arranged between the bottom of the longitudinal moving mechanism of the pliers head and the clamping groove, so that the dynamic friction force during the longitudinal movement of the mechanism is reduced.
The rear side of the longitudinal moving mechanism of the photovoltaic cable MC4 connector dismounting pliers head is provided with an upper sliding rail and a lower sliding rail, a sliding block is arranged in the sliding rail, and the sliding block is connected with the long arm end of the arc-shaped pull rod through a sliding block pin hole.
The 2 guide rail springs in the guide rail groove of the photovoltaic cable MC4 connector dismounting clamp head are symmetrically distributed in the rectangular top plane of the guide rail, 4 springs are made of the same material, are hard springs in the same size, have the same elastic coefficient, and have the elastic coefficient k2 larger, and have the k2 slightly larger than k1.
The separating mechanism is arranged in the clamping groove at the lower part of the guide rail of the photovoltaic cable MC4 connector dismounting clamp head, and a row of balls are arranged in the guide rail so as to reduce the dynamic friction force when the separating mechanism moves.
The longitudinal moving mechanism of the photovoltaic cable MC4 connector dismounting pliers head and the inclined plane structure of the separating mechanism are mutually contacted and matched to form the moving direction conversion mechanism, so that when the longitudinal moving mechanism moves backwards, the separating mechanism moves rightwards under the action of the mutual pressure of the two inclined planes. Under the open state of the clamp handle, a section of gap exists between the two inclined planes, before the clamp is completely pressed down by the clamp pressing arm, the longitudinal moving mechanism does idle stroke movement in the gap, and after the clamp is completely pressed down by the clamp pressing arm, the two inclined planes are just contacted with each other to push the separating mechanism to move rightwards.
The invention discloses an arc-shaped pull rod mechanism of a photovoltaic cable MC4 joint dismounting clamp, which consists of 4 pin holes and 3 arms: the main pin hole, the pivot pin hole and the pivot arm form a whole, the main pin hole is connected to the central supporting pin, the pivot arm and the pivot pin hole are fixed in position and do not rotate along with the clamp handle, the long pull rod arm and the short pull rod arm are respectively connected with the sliding block and the clamp handle through the sliding block pin and the clamp handle pin, the long pull rod arm and the short pull rod arm rotate by taking the pivot pin hole as a pivot, and the sliding block pin hole and the clamp handle pin hole are different in effective arm length relative to the pivot arm, so that when the sliding block pin hole and the clamp handle pin hole rotate around the pivot pin hole, the linear speeds of the sliding block pin hole and the clamp handle pin hole are different, only the linear speed difference of the sliding block is the linear speed of movement of the sliding block, and the speed component of the sliding block speed in the horizontal direction is the actual movement speed of the longitudinal movement mechanism, so that the rotary movement of the clamp handle is converted into the longitudinal movement of the longitudinal movement mechanism, and the separation mechanism is converted into the separation movement that the male connector is driven to move.
The front parts of two clamp handles of the photovoltaic cable MC4 connector dismounting clamp are connected by a central supporting pin, and the clamp handles and the clamp heads rotate around the central supporting pin in the using process of the dismounting clamp; a main pin hole of an arc-shaped pull rod is arranged between the two clamp handles on the central supporting pin, and the central supporting pin penetrates through the main pin hole.
The front part of the pliers handle of the photovoltaic cable MC4 connector disassembling pliers is provided with the wire stripping opening, the wire stripping range is 0.75 mm, 1.0 mm, 1.5 mm, 2.5 mm, 3.0 mm, 4.0 mm and 6.0mm in sequence, and the wire stripping pliers have the wire stripping function for cables with the above sizes.
The front limited distance mechanism in the clamp handle of the photovoltaic cable MC4 joint dismounting clamp comprises a limited distance bulge positioned on the upper clamp handle and a limited distance adjusting screw positioned on the lower clamp handle, and the pressure of the clamp head to the MC4 joint when the clamp handle is closed is adjusted by rotating the height of the adjusting screw, so that the clamp handle is suitable for small differences of MC4 joint sizes of different manufacturers.
The middle parts of the clamp handles of the dismounting clamp are connected by the supporting springs, when the clamp handles are not pressed, the clamp handles are opened by the springs, after the MC4 interface is dismounted by pressing the clamp handles, the clamp handles and the clamp heads are automatically opened by the springs by loosening hands, and the dismounting clamp is conveniently pulled out.
According to the detachable pliers, the PVC insulating anti-slip handle is sleeved outside the pliers handles, the outer surfaces of the handles are suitable for being gripped, and the rear ends of the handles are engraved with transverse stripes, so that the holding force can be increased, and the detachable pliers are effectively anti-slip.
The sliding and rolling parts of the dismounting clamp comprise: the longitudinal balls, the guide rail balls, the upper edge and the lower edge of the longitudinal moving mechanism, the clamping groove below the transverse guide rail, the two sliding surfaces of the moving direction conversion mechanism and the like are coated with a proper amount of lubricating oil, so that the friction force of the corresponding mechanism during movement is reduced.
The MC4 joint disassembling pliers are characterized in that pliers handles, a draw head shell, a longitudinal moving mechanism, a guide rail shell and a separating mechanism are made of SAE 1008 carbon steel, and a compacting mechanism is made of hard plastic.
Compared with the prior related MC4 dismounting device, the MC4 connector dismounting pliers have the beneficial effects that: the convenience of disassembly of the MC4 connector is enhanced, the male connector and the female connector can be separated by one-time grasping, time and labor are saved, and the strength fatigue of connector materials is effectively reduced; the cable stripping device is relatively simple in structure, convenient to use, capable of stripping cables of common size, beneficial to effective application in complex field environments and suitable for large-scale popularization.
Drawings
FIG. 1 is a diagram of a MC4 fitting mechanism in a connected state;
FIG. 2 is a schematic view of the MC4 joint disassembling pliers;
FIG. 3 is a schematic diagram of a clamp head;
FIG. 4 is a three view of the construction of the head housing;
FIG. 5 is a three view of a binding clip hold-down mechanism;
FIG. 6 is a three view of a mechanism for moving the binding clip longitudinally;
FIG. 7 is a three view of the binding clip transverse rail mechanism;
FIG. 8 is a three view of a binding clip separating mechanism;
FIG. 9 is a schematic view of the bevel engagement of the binding clip longitudinal movement mechanism and the separation mechanism;
FIG. 10 is a schematic view of an arcuate pull rod configuration;
FIG. 11 is a schematic view of an arcuate drawbar mounting location;
FIG. 12 is a schematic view of the operating position of the binding clip;
FIG. 13 is a detailed schematic view of the working position of the binding clip;
in the figure, 101A and 101B are connecting wires at two ends of the connector, 102A and 102B are back-screwed caps screwed at two ends of the connector, 103A and 103B are threads at two ends of the connector, 104 is a female connector, 105 is a matched metal terminal, 106 is a buckle groove, 107 is a male connector buckle, 108 is a rear end of the female connector, 109 is a female connector buckle jack, 110 is a male connector, 1 is a clamp head, 2 is an arc-shaped pull rod, 3 is a central supporting pin, 4 is a clamp handle main body, 5 is a PVC handle, 6 is Cheng Tuqi, 7 is a wire stripping port, 8 is a stroke adjusting screw, 9 is a supporting spring, 10 is a clamp head shell, 11 is a buckle pressing arm, 12 is a pressing spring, 13 is a pressing mechanism, 14 is a longitudinal moving mechanism, 15 is a longitudinal ball, 16 is a guide rail spring, 17 is a transverse guide rail, 18 is a separating mechanism, 19 is a slider pin, 20 is a main pin, 21 is a pivot pin, 22 is a clamp handle pin, 201 is a main pin hole, 202 is a slider pin hole, 203 is a fulcrum pin hole, 204 is a clamp handle pin hole, 205 is a fulcrum arm, 206 is a pull rod long arm, 207 is a pull rod short arm, 1001 is a compression spring upper fulcrum, 1002 is a compression mechanism groove, 1003 is a rail spring upper fulcrum, 1004 is a rail groove, 1005 is a longitudinal movement mechanism clamping groove, 1301 is a compression spring lower fulcrum, 1302 is a compression mechanism bulge, 1303 is a compression mechanism compression surface, 1401 is a traction slider, 1402 is a longitudinal triangle, 1403 is a slider pin hole, 1404 is a longitudinal bevel, 1701 is a rail spring lower fulcrum, 1702 is a rail ball, 1703 is a separation mechanism clamping groove, 1801 is a transverse triangle, 1802 is a separation mechanism bulge, 1803 is a male joint separation arm, 1804 is a transverse bevel, A-A is a male joint contact surface, B-B is a buckle compression surface, C-C is a compression surface, and D-D is a separation contact surface.
In the following description of the drawings, terms such as up, down, left, right, front, rear, etc., relate only to the view of the examples selected in the respective drawings and the position of the removal pliers, and should not be interpreted narrowly, i.e. in different working positions or due to mirror-symmetrical arrangements, etc., these references may vary.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more apparent, preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to facilitate understanding of the skilled person. It should be understood that the embodiments described herein are for illustration and explanation only and thus should not be taken as limiting the scope of the invention in the context of this particular example.
Fig. 1 is a block diagram of an MC4 joint in a connected state, where 101A and 101B are connecting wires at two ends of the joint, 102A and 102B are back-screwed caps screwed at two ends of the joint, 103A and 103B are threads at two ends of the joint, 104 is a main body structure of a female joint, 105 is a matched metal terminal, 106 is a fastening groove, 107 is a male joint fastening, 108 is a female joint rear end, 109 is a female joint fastening insertion hole, and 110 is a male joint. The metal terminal 105 inside the male joint and the female joint of the joint in the connection state is tightly connected, the static friction force is high, and the male joint buckle 107 is outwards disbursed, so that the outer side of the buckle is clamped on the outer side of the female joint buckle jack 109, and the buckle is prevented from being automatically loosened under the condition of being free from external pressure. Therefore, to disassemble the MC4 connector in the connected state into the separate male connector and female connector, the male connector buckle 107 needs to be pressed first to separate the outer side of the buckle 107 from the female connector buckle jack 109, then a reverse pulling force is applied to the male connector and the female connector simultaneously, when the reverse pulling force is greater than the static friction force between the male connector and the female connector, the male connector and the female connector move reversely, the buckle 107 is pulled out from the buckle jack 109, and then the two metal terminals are pulled out to separate, and the male connector and the female connector are separated, thereby disassembling the MC4 terminal.
Fig. 2 is a schematic view of the structure of the MC4 joint disassembling pliers, where two pliers handles 4 are connected by a central supporting pin 3, the pliers handles 4 are connected with a longitudinal moving mechanism 14 of the pliers head 1 by an arc-shaped pull rod 2, a supporting spring 9 in the middle of the pliers handles 4 is used for opening the pliers handles 4 and the pliers head 1, a limit protrusion 6 and a limit adjusting screw 8 are used for adjusting the closing degree of the pliers jaws and the pressure of the pliers head 1 to the disassembled MC4 joint, and a wire stripping opening 7 has a wire stripping function for seven types of cables of 0.75, 1.0, 1.5, 2.5, 3.0, 4.0 and 6.0 mm.
Fig. 3 is a schematic diagram of a clamp head structure of the MC4 joint disassembly clamp, wherein the clamp head housing 10 is a frame of the whole clamp head 1, and the buckle pressing arm 11, the housing 10 and the clamp handle 4 are of an integrated structure; the pressing mechanism 13 is arranged in the pressing mechanism groove 1002, and four pressing springs 12 are uniformly distributed at the upper part; the right side longitudinal moving mechanism 14 is arranged in a clamping groove 1005, and a longitudinal ball 15 is arranged at the bottom of the clamping groove; the transverse guide rail 17 is arranged in the guide rail groove 1004, two guide rail springs 16 are uniformly distributed at the upper part, and a separating mechanism 18 is clamped in a clamping groove 1703 at the bottom of the transverse guide rail 17; the longitudinal movement mechanism 14 cooperates with the inclined surfaces of the separation mechanism 18 to form a movement direction switching mechanism.
Fig. 4 is a three-view diagram of a structure of a clamp head housing of the MC4 joint disassembly clamp, in which a left side edge is extended and a bottom chamfer is at an outer side to form a buckle pressing arm 11 in a front view; four upper pressing spring supporting points 1001 are uniformly distributed above the middle pressing device groove 1002 and are aligned with the four lower pressing spring supporting points 1301 uniformly distributed on the upper surface of the pressing device 13, and the upper pressing device groove 1002 is used for fixedly mounting the pressing springs 12; the right side longitudinal movement mechanism clamping groove 1005 is used for installing the longitudinal movement mechanism 14, and the bottom of the right side longitudinal movement mechanism clamping groove is used for placing the longitudinal ball 15; two upper rail spring supporting points 1003 are uniformly distributed above and in the rightmost rail groove, are aligned with two lower rail spring supporting points 1701 uniformly distributed on the upper surface of the transverse rail 17, and are used for fixedly mounting the rail springs 16.
Fig. 5 is a three-view diagram of a binding clip compressing mechanism of the MC4 joint disassembling pliers, wherein four compressing spring lower supporting points 1301 uniformly distributed on the upper surface of the compressing device 13 are symmetrically distributed, and are used for fixedly installing compressing springs 12; the pressing mechanism protruding part 1302 in the front view is in contact with the pressing mechanism groove 1002, and the pressing mechanism 13 is clamped in the groove; the pressing surface 1303 of the pressing mechanism is in direct contact with the outer surface of the rear end 108 of the detached female connector, and friction increasing patterns are engraved on the surface of the pressing surface to ensure effective pressing and fixing of the butt connector.
Fig. 6 is a three-view of a longitudinal moving mechanism of the binding clip of the MC4 joint dismounting pliers, wherein a traction slide block 1401 at the outer side of the longitudinal moving mechanism 14 is installed in a longitudinal slide rail and can slide up and down along the slide rail, a slide block pin hole 1403 is arranged at the center of a protruding part of the traction slide block 1401, the traction slide block pin hole is connected with a slide block pin hole 202 through a slide block pin 19, and an arc-shaped pull rod 2 drives the slide block pin 19 to slide up and down so as to drive the longitudinal moving mechanism 14 to move longitudinally; the outer longitudinal bevel 1404 of the longitudinal triangle 1402 is smooth with a polished texture to reduce friction during movement.
Fig. 7 is a three-view diagram of a clamp head transverse rail mechanism of the MC4 joint disassembly clamp, in which two rail spring lower fulcrums 1701 uniformly distributed on the upper surface of a transverse rail 17 are symmetrically distributed for fixedly mounting a rail spring 16; a separating mechanism clamping groove 1703 is formed below the transverse guide rail 17 and is used for installing the separating mechanism 18, and a row of guide rail balls 1702 are arranged in a selected cavity inside the transverse guide rail 17 and are used for reducing the dynamic friction force when the separating mechanism 18 moves.
Fig. 8 is a three-view of the binding clip separating mechanism of the MC4 joint dismounting clip. The protruding parts 1802 at the two sides above the separating mechanism 18 are arranged in the separating mechanism clamping groove 1703 below the guide rail 17, and the transverse inclined surface 1804 at the outer side of the transverse triangular body 1801 at the left side of the middle part is smooth in polishing quality, so that friction during movement is reduced; the left chamfer below the release mechanism 18 forms a pointed end that facilitates compression and outward pushing of the male connector.
Fig. 9 is a schematic diagram of the bevel matching of the mechanism for moving the binding clip longitudinally and the separating mechanism of the MC4 connector disassembling pliers, when the binding clip 1 and the pliers handle 4 are not closed, a gap exists between the two bevels 1404 and 1804, the buckle pressing arm 11 starts to move downwards to fully press the buckle 107, no contact exists between the two bevels, when the buckle 107 is fully pressed, the two bevels just contact, the longitudinal moving mechanism 14 moves backwards, the longitudinal bevel 1404 is driven to move backwards, the transverse bevel 1804 is driven to move rightwards, the separating mechanism 18 is driven to move rightwards, so that the male connector 110 is driven to move rightwards, and the male connector is separated from the rear end 108 of the female connector, thereby realizing connector disassembly.
Fig. 10 is a schematic view of an arc-shaped pull rod structure of the MC4 joint disassembly pliers. The main pin hole 201 is fixed between the two clamp handles 4 by the central supporting pin 3, and the main pin hole 201 and the fulcrum pin hole 203 are of an integrated structure, so the fulcrum pin hole 203 is fixed relative to the central supporting pin 3 and does not rotate along with the rotation of the clamp handles; the slider pin hole 202, the long arm 206, the short arm 207 and the handle pin hole 204 are integrally formed, and rotate about the pivot pin 201.
Fig. 11 is a schematic diagram of the installation position of the arc-shaped pull rod of the MC4 joint dismounting clamp, the main pin hole 201 is fixed between two clamp handles 4 by the central supporting pin 3, the slide pin hole 202 is connected with the slide pin hole 1403 by the slide pin 19, and the clamp handle pin hole 204 is connected with the clamp handles 4 by the clamp handle pin 22.
Fig. 12 and 13 are schematic diagrams of the working position of the clamp head of the MC4 joint disassembly clamp and detailed diagrams thereof, when the disassembly clamp is used, the clamp pressing arm 11 is aligned with and contacted with the clamp 107 to form a linear clamp pressing surface B-B, the pressing mechanism 13 is aligned with and contacted with the female joint rear end 108 to form a rectangular pressing surface C-C, the separating mechanism 18 is aligned with and contacted with the male joint 110 to form a linear separating contact surface D-D, and an annular male joint contact surface A-A is formed between the male joint 110 and the female joint rear end 108.
In the MC4 joint disassembling process, as the clamp handle 4 is gradually gripped, the clamp head 1 is gradually closed, and the whole disassembling process is mainly divided into three stages from the pressing of the clamp handle 4 to the disassembling of the joint:
1. when the pliers head is aligned to the proper position of the MC4 joint according to the view of fig. 13, the pliers handle 4 is pressed down, the compressing mechanism 13 firstly contacts the rear end 108 of the female joint to form a rectangular compressing surface C-C, the compressing spring 12 is compressed, then the lower end of the separating mechanism 18 contacts the male joint 110 to form a linear contact surface D-D, then the guide rail spring 16 is compressed, the separating mechanisms 18 on two sides start to apply longitudinal pressure to the male joint towards the center of the joint, the male joint 109 and the rear end 108 of the female joint are gradually compressed and fixed in the process, and the positions of the compressing mechanism 13 and the separating mechanism 18 are also fixed;
2. the clamp head 1 continues to be closed, the compression spring 12 and the guide rail spring 16 continue to be compressed, and the clamp head shell 10 drives the clamp buckle pressing arm 11 to move downwards until the lower end point of the pressing arm 11 contacts the upper edge of the clamp buckle 107; the pliers head 1 continues to be closed, the buckle pressing arm 11 presses down the buckle 107, in the process, because the effective moment of the long pull rod arm 206 is larger than that of the short pull rod arm 207, the sliding block pin hole 202 drives the traction sliding block 1401 to move obliquely through the sliding block pin 19, the vertical component of the actual speed of the traction sliding block 1401 drives the sliding block 1401 to slide up and down along the sliding rail, the horizontal component drives the sliding block 1401 to pull the longitudinal moving mechanism 14 to move backwards, and no contact exists between the longitudinal inclined plane 1404 and the transverse inclined plane 1804; until the upper edge of the buckle 107 is pressed lower than the upper edge of the female connector buckle jack 109, even the lower edge of the buckle 107 is pressed to be in contact with the bottom of the buckle groove 106, at the moment, the buckle 107 has no longer a locking effect, the condition of pulling out the buckle 107 is met, and at the moment, the two inclined planes 1404 and 1804 are just in contact;
3. the pliers head 1 continues to be closed, the sliding block pin hole 202 on the arc-shaped pull rod 2 continues to drive the longitudinal moving mechanism 14 to move backwards through the sliding block pin 19, the longitudinal inclined plane 1404 is driven to move backwards, and the transverse inclined plane 1804 is driven to move rightwards due to the fact that the two inclined planes are contacted, and the separating mechanism 18 is driven to move rightwards along the transverse guide rail 17; because the rail spring 16 is compressed, the disengagement mechanism 18 has compressed the male connector 110, and thus the disengagement mechanism 18 will push the male connector 110 to move rightward when moving rightward until the catch 107 is pulled out of the female connector catch insertion hole 109, and finally the male connector 110 is separated from the female connector rear end 108, so that the connector is disassembled.
The foregoing is merely a preferred embodiment of the present invention and it is to be understood that the invention is not limited to the form disclosed herein and is not to be considered as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and of modification within the scope of the inventive concept described herein, by means of a person or knowledge of the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (3)
1. The utility model provides a photovoltaic cable MC4 connects dismantlement pincers which characterized in that includes two binding clip (1) and two pincers handles (4): the clamp head (1) is composed of five parts, namely a clamp head shell (10), a pressing mechanism (13), a longitudinal moving mechanism (14), a transverse guide rail (17) and a separating mechanism (18); the pliers handle (4) is provided with a wire stripping opening (7), a range limiting adjusting device (6, 8) and a PVC handle (5); the two clamp handles (4) are connected by a central supporting pin (3) and a supporting spring (9), and the clamp handles (4) are connected with a longitudinal moving mechanism (14) of the clamp head by an arc-shaped pull rod (2); the clamp handle (4), the clamp head shell (10) and the clamp buckle pressing arm (11) are of an integrated structure, the clamp buckle pressing arm (11) is provided with an outer chamfer, the clamp head shell (10) is provided with three grooves which are respectively used for installing the pressing mechanism (13), the longitudinal moving mechanism (14) and the transverse guide rail (17); a sliding rail in the up-down direction is arranged at the rear of the longitudinal moving mechanism (14), a traction sliding block (1401) is arranged in the sliding rail, a longitudinal triangular body (1402) is arranged at the right front, and the longitudinal inclined surface (1404) is polished and has a smooth surface; the upper left of the separating mechanism (18) is provided with a transverse triangle (1801), and the transverse inclined plane (1804) is polished and has a smooth surface; the longitudinal inclined plane (1404) and the transverse inclined plane (1804) are mutually contacted and matched to form a movement direction conversion mechanism; when the clamp head (1) and the clamp handle (4) are not closed, a gap exists between the two inclined planes, the buckle pressing arm (11) starts to move downwards to completely press the buckle (107), no contact exists between the two inclined planes, when the buckle (107) is completely pressed, the two inclined planes just contact, the longitudinal moving mechanism (14) moves backwards to drive the longitudinal inclined plane (1404) to move backwards, the transverse inclined plane (1804) is pushed to move rightwards to drive the separating mechanism (18) to move rightwards, and the male connector 110 is pushed to move rightwards to be separated from the rear end 108 of the female connector.
2. The photovoltaic cable MC4 joint dismounting clamp of claim 1, characterized by an arc-shaped pull rod (2)
The main pin hole (201) is fixed between the two clamp handles (4) by the central supporting pin (3), and the main pin hole (201) and the fulcrum pin hole (203) are of an integrated structure, so the fulcrum pin hole (203) is fixed relative to the central supporting pin (3) and does not rotate along with the rotation of the clamp handles; the sliding block pin hole (202), the pull rod long arm (206), the pull rod short arm (207) and the clamp handle pin hole (204) are of an integrated structure, and rotate around the fulcrum pin (21).
3. The photovoltaic cable MC4 connector disassembly pliers according to claim 1 is characterized in that the middle limited-distance mechanism of the pliers handle (4) comprises a limited-distance bulge (6) positioned on the upper pliers handle and a limited-distance adjusting screw (8) positioned on the lower pliers handle, and the height of the pliers is adjusted by rotating the screw, so that the pressure of the pliers head (1) on the disassembled MC4 connector when the pliers handle (4) is closed is adjusted.
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| CN201810020991.8A CN108173106B (en) | 2018-01-10 | 2018-01-10 | Photovoltaic cable MC4 connects and dismantles pincers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810020991.8A CN108173106B (en) | 2018-01-10 | 2018-01-10 | Photovoltaic cable MC4 connects and dismantles pincers |
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| CN108173106A CN108173106A (en) | 2018-06-15 |
| CN108173106B true CN108173106B (en) | 2024-04-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623729B (en) * | 2018-11-05 | 2020-12-11 | 浙江艾罗网络能源技术有限公司 | Photovoltaic PV connects extracting tool |
| CN114678733A (en) * | 2022-02-18 | 2022-06-28 | 华能国际电力股份有限公司德州电厂 | Anti-loosening device for water photovoltaic module MC4 joint |
| CN116345239B (en) * | 2023-05-19 | 2023-07-25 | 常州琥正电子科技股份有限公司 | Floating type electric connector and connector assembly |
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| US8646160B2 (en) * | 2010-08-11 | 2014-02-11 | Pi-Liang Wu | Connectors removal pliers |
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| CN101567531A (en) * | 2007-11-02 | 2009-10-28 | 威德米勒界面有限公司及两合公司 | Stripping pliers |
| CN203680100U (en) * | 2013-12-25 | 2014-07-02 | 中国海洋石油总公司 | Tool pliers for separating sealing plugs |
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