Transmission mechanism for photovoltaic panel, photovoltaic panel assembly and photovoltaic device

Abstract

The utility model discloses a transmission mechanism for a photovoltaic panel, which comprises a driving shaft and a clutch mechanism, the clutch mechanism comprises a fixed part and a moving part which are oppositely arranged, and the fixed part of the clutch mechanism is fixedly connected with the output end of the driving shaft; under the action of external force, the moving part can move relative to the fixed part, so that the clutch state of the clutch mechanism is switched; when the clutch mechanism is in a connection state, the rotation of the driving shaft can drive a fixed part and a moving part of the clutch mechanism to synchronously rotate; and when the clutch mechanism is in a separated state, the rotation of the driving shaft can drive the fixed part of the clutch mechanism to rotate relative to the moving part. Synchronous rotation of the first load and the second load can be achieved, relative rotation between the first load and the second load can also be achieved, and therefore the folding function is achieved. The utility model also discloses a photovoltaic panel assembly and a photovoltaic device.

Description

Technical Field

[0001] This utility model relates to a transmission device, specifically a transmission mechanism for a photovoltaic panel. This utility model also relates to a photovoltaic panel assembly and a photovoltaic device. Background Technology

[0002] Solar energy, as a clean and renewable energy source, is being used more and more widely. Solar photovoltaic power generation equipment uses solar photovoltaic modules as photoelectric conversion devices to convert solar energy into electrical energy, thereby realizing the utilization of solar energy.

[0003] Currently, a common method to increase the power generation of photovoltaic equipment per unit time is to maximize the size of the photovoltaic panels. For example, a photovoltaic device disclosed in Chinese utility model patent document CN216122306U includes multiple photovoltaic panels arranged in a linear fashion, which significantly increases the size of the photovoltaic panels and thus greatly improves the power generation.

[0004] Furthermore, there are also methods that use photovoltaic panels to track the sun in order to maximize the vertical irradiation area and thus improve the photoelectric conversion efficiency. For example, a drive shaft is set between the photovoltaic panel and the photovoltaic support to achieve sun tracking.

[0005] However, outdoor equipment and devices, such as photovoltaic systems and outdoor billboards, which are relatively large in area, are inevitably affected by rain, snow, hail, or strong winds. For example, snow covering photovoltaic panels will prevent them from receiving sunlight; strong winds can cause irreversible damage to photovoltaic panels and even damage the photovoltaic support structure. This has led to research into how outdoor devices and equipment can effectively avoid the impact of severe weather. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a transmission mechanism for photovoltaic panels, which can realize both synchronous rotation of the first load and the second load, and relative rotation between the first load and the second load, thereby having a folding function.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model for the transmission mechanism of photovoltaic panels is as follows:

[0008] The system includes a drive shaft and a clutch mechanism. The clutch mechanism comprises a fixed component and a moving component arranged opposite to each other. The fixed component of the clutch mechanism is fixedly connected to the output end of the drive shaft. Under the action of an external force, the moving component can move relative to the fixed component, causing the clutch mechanism to switch between the engaged and disengaged states. When the clutch mechanism is in the engaged state, the rotation of the drive shaft can drive the fixed component and the moving component of the clutch mechanism to rotate synchronously. When the clutch mechanism is in the disengaged state, the rotation of the drive shaft can drive the fixed component of the clutch mechanism to rotate relative to the moving component.

[0009] In another embodiment, the clutch mechanism has a connected state in which the fixed member and the moving member form a transmission engagement, and a disengaged state in which the fixed member can rotate freely relative to the moving member.

[0010] In another embodiment, the fixing component of the clutch mechanism and / or the output end of the drive shaft are used to fixally connect to the first load; the moving component of the clutch mechanism is used to fixally connect to the second load.

[0011] In another embodiment, a pull rod is further included, one end of which is connected to the moving part of the clutch mechanism.

[0012] In another embodiment, a trigger is also included, the trigger including a connecting portion for connecting to the other end of the lever and a trigger portion for receiving the external force; when the trigger portion is subjected to force, it can transmit the external force to the lever through the connecting portion, thereby providing the external force to the moving part.

[0013] In another embodiment, there are two clutch mechanisms and two pull rods; the two clutch mechanisms are respectively disposed at both ends of the drive shaft; the other ends of the two pull rods are connected to the same trigger.

[0014] In another embodiment, the trigger portion is a protrusion on the trigger member that faces away from the drive shaft.

[0015] In another embodiment, when the clutch mechanism is in the engaged state, the fixed member and the moving member form a surface contact engagement.

[0016] In another embodiment, the fixing member has a protrusion facing the moving member, and the moving member has a recess that matches the protrusion; when the clutch mechanism is in the engaged state, the fixing member and the moving member can form a transmission connection through the cooperation of the protrusion and the recess.

[0017] In another embodiment, the clutch mechanism further includes a housing and a guide structure. The housing covers the outside of the fixed member and the moving member, and the housing and the fixed member are capable of relative rotational movement. The moving member and the housing are circumferentially positioned and connected through the guide structure.

[0018] In another embodiment, the guide structure includes a groove formed in the housing and a protrusion formed on the moving member; or, the guide structure includes a protrusion formed in the housing and a groove formed on the moving member; the protrusion and the groove are adapted to each other.

[0019] In another embodiment, the clutch mechanism further includes a lever, one end of which is connected to the moving member, and the other end is a free end; when the free end of the lever is subjected to force, it can provide the external force to the moving member.

[0020] In another embodiment, an elastic element is also included, which is connected to the moving element; when the external force disappears, the elastic element can provide a restoring force to the moving element.

[0021] In another embodiment, the drive shaft includes a helical rod, a sliding sleeve, and a transmission component. The sliding sleeve is movably connected to the helical rod. The sliding sleeve and the helical rod are guided by a helical guide structure. The sliding sleeve is capable of linear motion relative to the helical rod along its axial direction. The transmission component is connected to the sliding sleeve. The transmission component includes an active component connected to a power source and a driven component disposed on the sliding sleeve. Under the drive of the power source, the active component drives the driven component, thereby causing the sliding sleeve to move linearly along the axial direction of the helical rod.

[0022] In another embodiment, the sliding sleeve has a through hole, and the sliding sleeve is sleeved on the spiral rod through the through hole; the spiral guide structure is a spiral groove provided on the inner wall of the through hole and a spiral protrusion provided on the outer peripheral surface of the spiral rod;

[0023] In another embodiment, the spiral guide structure is a spiral protrusion disposed on the inner wall of the through hole and a spiral groove disposed on the outer peripheral surface of the spiral rod;

[0024] In another embodiment, the spiral guide structure comprises a first spiral groove disposed on the inner wall of the through hole, a second spiral groove disposed on the outer circumferential surface of the spiral rod, and a plurality of balls disposed between the first spiral groove and the second spiral groove.

[0025] In another embodiment, the device further includes a housing, wherein the outer peripheral surface of the sliding sleeve is formed with a first guide structure extending axially, and the housing is provided with a second guide structure adapted to the first guide structure; the first guide structure and the second guide structure cooperate with each other, and the sliding sleeve and the housing are movably connected.

[0026] In another embodiment, the first guide structure is a guide protrusion, and the second guide structure is a guide groove;

[0027] In another embodiment, the first guide structure is a guide groove, and the second guide structure is a guide protrusion;

[0028] In another embodiment, an intermediate component is also included. Both the first guide structure and the second guide structure are guide grooves. The intermediate component is disposed between the first guide structure and the second guide structure, thereby forming a guiding fit.

[0029] This utility model also provides a photovoltaic panel module, the technical solution of which is as follows:

[0030] The device includes at least a first photovoltaic panel and a second photovoltaic panel, which are connected together to the transmission mechanism for the photovoltaic panels. The first photovoltaic panel is fixedly connected to the output end of the drive shaft and / or the fixing component of the clutch mechanism. The second photovoltaic panel is fixedly connected to the moving component of the clutch mechanism. When the clutch mechanism is engaged, the rotation of the drive shaft can drive the first photovoltaic panel and the second photovoltaic panel to rotate synchronously. When the clutch mechanism is disengaged, the rotation of the drive shaft can drive the first photovoltaic panel to rotate relative to the second photovoltaic panel.

[0031] This utility model also provides a photovoltaic device, the technical solution of which is as follows:

[0032] Including the photovoltaic panel assembly.

[0033] The technical effects that this utility model can achieve are:

[0034] In normal operation, the two photovoltaic panels of this invention are in an unfolded state, so that the photovoltaic panels have a larger light-receiving area. When encountering abnormal weather such as strong winds, one of the photovoltaic panels can be flipped relative to the other, so that the two photovoltaic panels are folded together, thereby realizing the automatic folding of the photovoltaic panels. At this time, the wind-receiving area of ​​the photovoltaic panels is minimized, thus avoiding the impact of wind.

[0035] This invention connects two photovoltaic panels that need to rotate relative to each other to two clutch components of a clutch mechanism, and connects the fixing component of the clutch mechanism to the drive shaft, thereby enabling control of the relative rotation state between the two photovoltaic panels through the clutch mechanism. The two photovoltaic panels can only rotate relative to each other when the clutch mechanism is disengaged. Therefore, this invention can achieve folding drive of the photovoltaic panels by controlling the disengagement state of the clutch mechanism.

[0036] When the clutch mechanism of this invention is in the disengaged state, the photovoltaic panel can be folded; when the clutch mechanism of this invention is in the engaged state, it can drive the photovoltaic panel to rotate, thereby enabling the photovoltaic panel to track the sun.

[0037] This invention achieves mechanical control of the clutch mechanism through a trigger element. The switching of the clutch mechanism's engagement and disengagement states does not rely on electricity, thus completely eliminating the dependence on backup power.

[0038] This invention controls the engagement / disengagement state of two clutch mechanisms simultaneously using the same trigger element, thereby controlling the relative motion state between two photovoltaic panels. Attached Figure Description

[0039] Those skilled in the art will understand that the following description is merely illustrative of the principles of this invention, and these principles can be applied in various ways to achieve many different alternative implementations. These descriptions are only intended to illustrate the general principles of the teachings of this invention and are not intended to limit the inventive concept disclosed herein.

[0040] Embodiments of the present invention are illustrated in conjunction with the accompanying drawings, which are incorporated in and form part of this specification, and together with the foregoing general description and the following detailed description of the drawings, serve to explain the principles of the present invention.

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0042] Figure 1 This is a schematic diagram of the transmission mechanism of this utility model used in photovoltaic panels;

[0043] Figure 2 This is an exploded view of the transmission mechanism of this utility model used in photovoltaic panels;

[0044] Figure 3 This is an exploded view of the drive shaft of this utility model;

[0045] Figure 4 This is a partially enlarged schematic diagram of the screw rod of this utility model;

[0046] Figure 5 This is a schematic diagram of the first embodiment of the clutch mechanism of this utility model;

[0047] Figure 6 This is a cross-sectional schematic diagram of the first embodiment of the clutch mechanism of this utility model;

[0048] Figure 7 This is an exploded view of the first embodiment of the clutch mechanism of this utility model;

[0049] Figure 8 This is an exploded view of the second embodiment of the clutch mechanism of this utility model.

[0050] Figure 9 This is a schematic diagram of the photovoltaic panel assembly of this utility model; the two photovoltaic panels in the diagram are in an unfolded state;

[0051] Figure 10 This is a schematic diagram of the photovoltaic panel assembly of this utility model; the first photovoltaic panel in the figure is in a folded-in state toward the second photovoltaic panel;

[0052] Figure 11 This is a schematic diagram of the photovoltaic panel assembly of this utility model; the two photovoltaic panels in the diagram are in a retracted state;

[0053] Figure 12 This is an exploded view of the photovoltaic panel module of this utility model.

[0054] Explanation of the reference numerals in the figure:

[0055] 1 is the housing, 2 is the bearing.

[0056] 3 is a fixed component, and 4 is a moving component.

[0057] 5 is the return spring, 6 is the cover.

[0058] 7 is a lever, 8 is a bolt.

[0059] 9 represents a bolt.

[0060] 100 represents the first photovoltaic panel, and 200 represents the second photovoltaic panel.

[0061] 300 is the transmission mechanism.

[0062] 101 is the first connecting ring, and 201 is the second connecting ring.

[0063] 301 is the drive shaft, and 302 is the first clutch mechanism.

[0064] 303 is the second clutch mechanism, and 304 is the first pull rod.

[0065] 305 is the second lever, and 306 is the trigger.

[0066] 3061 represents the two wings of the trigger element, and 3062 represents the triggering part of the trigger element.

[0067] 1-1 is a groove, 4-1 is a protrusion.

[0068] 6-1 is a positioning groove.

[0069] 11 is the helical rod, and 12 is the sliding sleeve.

[0070] 13 is the mounting base, and 14 is the lead screw.

[0071] 15 is the fastener, 16 is the outer casing.

[0072] 17 is a bearing, 18 is a bearing.

[0073] 1101 represents the two ends of the helical rod, and 1102 represents the helical protrusion.

[0074] 1201 is a guide groove, and 1202 is a spiral groove.

[0075] 1203 is the positioning hole for the fastener, and 1601 is the guide protrusion. Detailed Implementation

[0076] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains. The terms "first," "second," and similar words used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Words such as "comprising" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0077] like Figure 1 , Figure 2 The diagram shows an embodiment of the transmission mechanism of this utility model for photovoltaic panels. The transmission mechanism includes a drive shaft 301, with both ends of the drive shaft 301 serving as output ends, respectively connected to a first clutch mechanism 302 and a second clutch mechanism 303. The first clutch mechanism 302 is connected to one end of a first pull rod 304, and the second clutch mechanism 303 is connected to one end of a second pull rod 305. The other ends of the first pull rod 304 and the second pull rod 305 are connected to the same trigger member 306. The trigger member 306 has a triggering part and two connecting parts for the first pull rod 304 and the second pull rod 305 respectively. When the triggering part is subjected to force, it can transmit external force to the first pull rod 304 and the second pull rod 305 simultaneously through the connecting parts.

[0078] Preferably, the trigger 306 has a T-shaped structure; the two wings 3061 of the trigger 306 serve as connecting parts, and the trigger part 3062 of the trigger 306 forms a protrusion in the direction away from the drive shaft 301.

[0079] Specifically, the first clutch mechanism 302 has a fixed member 3 and a moving member 4. The moving member 4 can perform translational movement relative to the fixed member 3, so that its clutch state is switched. When the moving member 4 is close to the fixed member 3 and forms a transmission connection with the fixed member 3, the clutch mechanism is in the connected state. When the moving member 4 is away from the fixed member 3 and disengages from the transmission connection with the fixed member 3, the clutch mechanism is in the disengaged state.

[0080] The structure of the second clutch mechanism 303 is the same as that of the first clutch mechanism 302, and will not be described again here.

[0081] The first clutch mechanism 302 and the second clutch mechanism 303 are respectively fixedly connected to both ends of the drive shaft 301 through their respective fixing parts 3. That is, the first clutch mechanism 302 is connected to one end of the drive shaft 301 through its fixing part 3, and the second clutch mechanism 303 is connected to the other end of the drive shaft 301 through its fixing part 3. When the first clutch mechanism 302 and the second clutch mechanism 303 are in the connected state, the rotation of the drive shaft 301 can drive the fixing parts 3 and the moving parts 4 of the first clutch mechanism 302 and the second clutch mechanism 303 to rotate synchronously. When the first clutch mechanism 302 and the second clutch mechanism 303 are in the disengaged state, the rotation of the drive shaft 301 can drive the fixing parts 3 of the first clutch mechanism 302 and the second clutch mechanism 303 to rotate relative to the moving parts 4.

[0082] like Figure 3 The figure shows an embodiment of the drive shaft 301 of this utility model. The drive shaft 301 includes a helical rod 11, and a sliding sleeve 12 is movably sleeved on the helical rod 11. One end or both ends 1101 of the helical rod 11 serve as the output end of the drive shaft 301, and are used to connect the fixing member 3 of the first clutch mechanism 302 or the second clutch mechanism 303.

[0083] The sliding sleeve 12 has a through hole, and the sliding sleeve 12 is sleeved on the spiral rod 11 through the through hole. The outer peripheral surface of the spiral rod 11 has a spiral protrusion 1102 extending spirally around its axis. The inner wall of the through hole of the sliding sleeve 12 has a spiral groove 1202 that matches the spiral protrusion 1102. The spiral protrusion 1102 and the spiral groove 1202 form a spiral guide structure between the sliding sleeve 12 and the spiral rod 11. The spiral guide connection between the sliding sleeve 12 and the spiral rod 11 is realized through the cooperation of the spiral groove 1202 and the spiral protrusion 1102.

[0084] The spiral guide structure between the sliding sleeve 12 and the spiral rod 11 can also adopt other structures that can produce a spiral guiding effect; for example, a spiral groove can be set on the outer peripheral surface of the spiral rod 11, and a spiral protrusion can be set on the inner wall of the through hole of the sliding sleeve 12; or a first spiral groove can be set on the inner wall of the through hole of the sliding sleeve 12, a second spiral groove can be set on the outer peripheral surface of the spiral rod 11, and multiple balls can be set between the first spiral groove and the second spiral groove, which can also realize the spiral guiding connection between the sliding sleeve 12 and the spiral rod 11.

[0085] The sliding sleeve 12 is connected to the transmission component; the transmission component includes an active component connected to the power source and a driven component fixedly connected to the sliding sleeve 12; under the drive of the power source, the active component drives the driven component, thereby causing the sliding sleeve 12 to move linearly along the axial direction of the helical rod 11.

[0086] Specifically, the sliding sleeve 12 is provided with a fixing member positioning hole 1203, and a fixing member 15 (driven member) is inserted into the fixing member positioning hole 1203. The fixing member 15 is fixedly connected to the sliding sleeve 12 by multiple bolts.

[0087] The fixing member 15 has an internal threaded hole, and the fixing member 15 is movably connected to the lead screw 14 (driving member) through the internal threaded hole;

[0088] Both ends of the lead screw 14 are connected to the mounting base 13 via bearings 17; the lead screw 14 can rotate relative to the fixed mounting base 13; one end of the lead screw 14 serves as the input end of the drive shaft 301, connecting to an external drive mechanism as a power source.

[0089] The two ends of the screw rod 11 are movably connected to the mounting base 13 via bearings 18; the screw rod 11 can rotate relative to the fixed mounting base 13.

[0090] The outer cover of the screw rod 11 is provided with a housing 16;

[0091] The outer peripheral surface of the sliding sleeve 12 is formed with a first guide structure extending along the axial direction, and the outer shell 16 is provided with a second guide structure adapted to the first guide structure; the first guide structure and the second guide structure cooperate to movably connect the sliding sleeve 12 and the outer shell 16.

[0092] Specifically, the outer peripheral surface of the sliding sleeve 12 is formed with an axially extending guide groove 1201 as a first guide structure, and the inner wall of the outer shell 16 is formed with a guide protrusion 1601 that cooperates with the guide groove 1201 of the sliding sleeve 12 as a second guide structure; the sliding sleeve 12 and the outer shell 16 are connected by the cooperation of the guide groove 1201 and the guide protrusion 1601.

[0093] Of course, the first guide structure can be a guide protrusion and the second guide structure can be a guide groove; or, both the first guide structure and the second guide structure can be guide grooves, and multiple intermediate parts can be set between the first guide structure and the second guide structure to form a guide fit, such as ball bearings, which can also realize the movable connection between the sliding sleeve 12 and the outer shell 16.

[0094] The working principle of drive shaft 301 is as follows:

[0095] An external drive mechanism (such as a motor) drives the lead screw 14 to rotate. The rotation of the lead screw 14 causes the fixing member 15 to translate along the axial direction of the lead screw 14. The fixing member 15 drives the sliding sleeve 12 to translate along the axial direction of the spiral rod 11. During the translation process, the sliding sleeve 12 guides the spiral rod 11 around its own rotation axis through the cooperation of the spiral groove 1202 and the spiral protrusion 1102, thereby realizing the small-angle rotation of the spiral rod 11.

[0096] Since the sliding sleeve 12 achieves a movable connection with the outer shell 16 through the cooperation of the guide groove 1201 and the guide protrusion 1601, the translational movement of the sliding sleeve 12 driven by the fixing member 15 can be guided by the guide groove 1201 and the guide protrusion 1601, so as to avoid the rotation of the screw rod 11 from affecting the linear movement of the sliding sleeve 12.

[0097] This invention enables the screw rod 11 to rotate within a small angle range (e.g., no more than 360°) via an external drive mechanism. The maximum rotation angle of the screw rod 11 depends on the helix angle of the helical protrusion 1102 and the length of the screw rod 11. By adjusting the helix angle of the helical protrusion 1102 and the length of the screw rod 11, small-angle rotation of the screw rod 11 within a range not exceeding 180° can be achieved.

[0098] Preferably, the helix angle of the helical guide structure does not exceed 40°; wherein, the helix angle of the helical guide structure refers to the angle α between the helical guide structure (i.e., the helical protrusion 1102) and the rotation axis of the helical rod 11, such as... Figure 4 As shown.

[0099] In use, the outer casing 16 can be fixedly connected to external equipment, for example, directly fixed to the ground, and the terminal load (such as a photovoltaic panel) can be fixed to the screw rod 11. Since the helix angle does not exceed 40°, when the screw rod 11 of this invention needs to rotate, the lead screw 14 rotates under the drive of the external drive mechanism. The rotation of the lead screw 14 can easily drive the fixing member 15 and the sliding sleeve 12 to translate along the axis of the screw rod 11, thereby driving the screw rod 11 to rotate. This invention can achieve low-speed rotation of the screw rod 11 without a reduction mechanism.

[0100] During use, when the terminal load applies torque to the screw rod 11 under external force (e.g., the screw rod 11 is subjected to huge torque due to strong wind), the screw rod 11 will transmit the external force to the sliding sleeve 12. Since the screw rod 11 and the sliding sleeve 12 are connected by the cooperation of the helical protrusion 1102 and the helical groove 1202, according to the force analysis, the screw rod 11 will apply a thrust along the axial direction of the screw rod 11 and a thrust along the circumferential direction of the screw rod 11 to the sliding sleeve 12, so that the sliding sleeve 12 will have a tendency to translate along the axial direction and rotate along the circumferential direction under the action of the thrust in the axial direction.

[0101] However, due to the guiding fit formed by the guide groove 1201 and the guide protrusion 1601, the sliding sleeve 12 can only move linearly relative to the outer shell 16 along the axis of the screw rod 11 and cannot rotate. Therefore, the thrust on the sliding sleeve 12 along the circumferential direction of the screw rod 11 will be directly transmitted to the outer shell 16, that is, to the component used to fix the outer shell 16.

[0102] At the same time, as the external drive mechanism drives the lead screw 14 to rotate, the lead screw 14 can provide a holding force to the sliding sleeve 12 through the fixing member 15, thereby counteracting the thrust on the sliding sleeve 12 along the axial direction of the screw rod 11.

[0103] Under the combined action of the outer casing 16 and the external drive mechanism, the drive shaft 301 of this utility model can avoid abnormal movement of the sliding sleeve 12 relative to the screw rod 11 when encountering strong winds during operation, thereby avoiding abnormal rotation of the screw rod 11 caused by strong winds.

[0104] Therefore, the screw rod 11 of this utility model has a better ability to resist external forces and its rotation state will not be affected by external forces.

[0105] More preferably, the helix angle of the spiral guide structure is greater than 5° and less than 25°.

[0106] Obviously, the smaller the helix angle, the smaller the thrust along the axis of the helical rod 11. At this time, only a smaller power external drive mechanism is needed to keep the helical rod 11 stationary, so as to prevent the helical rod 11 from being driven to rotate by the torque from the external load.

[0107] Furthermore, when the helix angle is small enough, the screw rod 11 can be kept stationary without the need for an external drive mechanism. At this time, the thrust along the axis of the screw rod 11 after the external force is decomposed is equal to the frictional force between the guide groove 1201 and the guide protrusion 1601.

[0108] With the diameter of the screw rod 11 being 50 mm, the following data were obtained from a finite number of experiments at different angles, under varying helix angles of the helical guide structure:

[0109] When the helix angle is 40 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, a force of approximately 850 Newtons is required along the axial direction of the helical rod 11; while in order to drive a load of 1000 Newtons, a driving force of approximately 1200 Newtons is required along the axial direction of the helical rod 11.

[0110] When the helix angle is 28 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, a force of about 500 Newtons is required along the axial direction of the helical rod 11; while in order to drive a load of 1000 Newtons, a driving force of about 680 Newtons is required along the axial direction of the helical rod 11.

[0111] When the helix angle is 18 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, the force required along the axis of the helical rod 11 is approximately 310 Newtons; while in order to drive a load of 1000 Newtons, the driving force required along the axis of the helical rod 11 is approximately 450 Newtons.

[0112] When the helix angle is 14 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, the force required along the axis of the helical rod 11 is approximately 230 Newtons; while in order to drive a load of 1000 Newtons, the driving force required along the axis of the helical rod 11 is approximately 320 Newtons.

[0113] When the helix angle is 10 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, a force of about 150 Newtons is required along the axial direction of the helical rod 11; while in order to drive a load of 1000 Newtons, a driving force of about 210 Newtons is required along the axial direction of the helical rod 11.

[0114] When the helix angle is 5 degrees, when a force of 1000 Newtons is applied to the helical rod 11, in order to keep the helical rod 11 stationary, the force required along the axis of the helical rod 11 is about 75 Newtons; while in order to drive a load of 1000 Newtons, the driving force required along the axis of the helical rod 11 is about 110 Newtons.

[0115] It is clear from the above experimental data that when the helix angle is smaller, a smaller power external drive mechanism is needed to drive the same weight of load. At the same time, a smaller power external drive mechanism is also needed to keep the helical rod 11 from rotating relative to the sliding sleeve 12.

[0116] like Figures 5 to 7The first embodiment of the clutch mechanism of this utility model is shown. The clutch mechanism includes a fixed member 3 and a moving member 4 arranged along the axial direction of the screw rod 11. The fixed member 3 is provided with a protrusion facing the moving member 4, and the moving member 4 is provided with a recess adapted to the protrusion. When the clutch mechanism is in the connected state, the fixed member 3 and the moving member 4 can form a transmission connection through the cooperation of the protrusion and the recess.

[0117] Specifically, the fixed part 3 and the moving part 4 are respectively formed with mutually cooperating connecting teeth at their opposite ends; when the clutch mechanism is in the connected state, the fixed part 3 and the moving part 4 can be engaged and connected through the connecting teeth;

[0118] The fixed component 3 and the moving component 4 are covered by a housing 1;

[0119] The inner end face of the fixing member 3 is connected to the housing 1 through a movable connector, so that the fixing member 3 and the housing 1 can rotate relative to each other; the movable connector can be a bearing 2;

[0120] The other end (i.e., the opposite end) of the fixing member 3 extends out of the housing 1; the protruding part of the fixing member 3 is fixedly connected to the output end of the drive shaft 301; the rotation of the drive shaft 301 can drive the fixing member 3 of the clutch mechanism to rotate.

[0121] The moving part 4 and the housing 1 are connected by a guide structure; specifically, a protrusion 4-1 is formed on the side of the moving part 4, and a groove 1-1 is formed on the housing 1; the groove 1-1 cooperates with the protrusion 4-1; the protrusion 4-1 of the moving part 4 extends into the groove 1-1 of the housing 1, thereby realizing the connection between the moving part 4 and the housing 1.

[0122] The other end (i.e., the opposite end) of the moving part 4 is connected to a plurality of evenly distributed return springs 5; the return springs 5 ​​can provide a return force to the moving part 4;

[0123] Specifically, one end of the return spring 5 abuts against the other end of the moving part 4, and the other end of the return spring 5 seals the flange of the cover 6;

[0124] In this embodiment, the cover 6 and the housing 1 are detachable independent components; obviously, the cover 6 and the housing 1 can also be integrated, in which case the return spring 5 is directly connected to the housing 1. The return spring 5 can be fixed in various ways, but since the fixing method of the return spring 5 is not a feature of this invention, it will not be described in detail here.

[0125] The moving part 4 is fitted onto the cover 6. The cover 6 keeps the moving part 4 coaxial with the fixed part 3, thereby guiding the translational movement of the moving part 4 so that the moving part 4 can only move towards or away from the fixed part 3 without deviating from the axial direction. The flange of the cover 6 is fixedly connected to the housing 1 by multiple bolts 8.

[0126] Preferably, the outer peripheral surface of the cover 6 is provided with a plurality of positioning grooves 6-1, and the reset spring 5 is disposed in the positioning grooves 6-1. The positioning grooves 6-1 can guide the reset spring 5 and prevent the reset spring 5 from undergoing unnecessary deformation.

[0127] Of course, a single return spring can also be used, with the return spring sleeved outside the cover 6, which can also provide a return force to the moving part 4.

[0128] Those skilled in the art will understand that the return spring can be any elastic element capable of providing a return force to the moving part 4, as long as the elastic element is in direct or indirect contact with the moving part 4, the return force can be transmitted to the moving part 4.

[0129] The cover 6 is fixedly connected to the fixed end of the lever 7 by bolts 9, thereby realizing the connection between the lever 7 and the moving part 4; the lever 7 extends radially; when the free end of the lever 7 is subjected to force, it can transmit the force to the cover 6 and provide the clutch switching force to the moving part 4 through the return spring 5;

[0130] When the free end of lever 7 is subjected to an external force F to the left, the fixed end of lever 7 can provide a pulling force to the right to the flange of cover 6; cover 6 transmits this pulling force to moving part 4 through return spring 5, causing moving part 4 to translate axially to the right, thereby separating moving part 4 from fixed part 3, as shown. Figure 6 As shown;

[0131] When the free end of the lever 7 loses the action of external force, the return spring 5 provides a leftward elastic force to the moving part 4, causing the moving part 4 to move to the left, thereby resetting the moving part 4 and restoring the meshing connection with the fixed part 3.

[0132] The clutch mechanism of this utility model is connected by the groove 1-1 and the protrusion 4-1, so that the housing 1 can circumferentially position the moving part 4, so that the moving part 4 can only perform relative translational movement with the housing 1, and cannot perform circumferential rotational movement between the moving part 4 and the housing 1, thereby avoiding the clutch mechanism from affecting the flip angle of the photovoltaic panel.

[0133] Obviously, any other means that enable the moving part 4 to translate can also be used to move the moving part 4 toward or away from the fixed part 3; for example, such as Figure 8 The second embodiment of the clutch mechanism of this utility model is shown. The difference from the first embodiment is that the moving part 4 is driven by magnetic force to achieve translational movement; when the cover 6 provides magnetic force to the moving part 4, it can drive the moving part 4 away from the fixed part 3.

[0134] Specifically, the moving part 4 and the cover 6 are made of magnetic metal material and electromagnet respectively. When the electromagnet is energized, it generates electromagnetic force. The attraction of the electromagnetic force to the magnetic metal material causes the moving part 4 to move towards the cover 6, thereby moving away from the fixed part 3 and realizing the disengagement action of the clutch mechanism. When the electromagnet is de-energized, the electromagnetic force disappears, and the return spring 5 provides a return force to the moving part 4, so that the moving part 4 is reset and restored to the meshing connection state with the fixed part 3, realizing the engagement action of the clutch mechanism.

[0135] As a third embodiment of the clutch mechanism of this utility model, the moving part 4 can be a permanent magnet and the cover 6 can be an electromagnet; the cover 6 is constantly energized, so that the opposite end of the cover 6 generates an electromagnetic force with the same polarity as the opposite end of the moving part 4, thereby forming a magnetic repulsion force between the cover 6 and the moving part 4, so that the moving part 4 is kept away from the cover 6. At this time, the moving part 4 and the fixed part 3 are in an engaged connection state, realizing the connection action of the clutch mechanism;

[0136] When the cover 6 is de-energized, the magnetic repulsion between the cover 6 and the moving part 4 disappears, and the return spring 5 provides a pulling force to the moving part 4, causing the moving part 4 to move towards the cover 6, thereby moving the moving part 4 away from the fixed part 3 and realizing the separation action of the clutch mechanism.

[0137] like Figures 9 to 12 The illustration shows an embodiment of the photovoltaic panel assembly of the present invention. The photovoltaic panel assembly includes a first photovoltaic panel 100 and a second photovoltaic panel 200. The inner sides of the first photovoltaic panel 100 and the second photovoltaic panel 200 are respectively connected to the transmission mechanism 300 of the present invention for photovoltaic panels.

[0138] Specifically, a first connecting ring 101 is fixedly provided at both ends of the inner side of the first photovoltaic panel 100, and a second connecting ring 201 is fixedly provided at both ends of the inner side of the second photovoltaic panel 200, such as... Figure 12 As shown;

[0139] The first photovoltaic panel 100 is fixedly connected to the fixing part 3 of the clutch mechanism via the first connecting ring 101, and the second photovoltaic panel 200 is fixedly connected to the moving part 4 of the clutch mechanism via the second connecting ring 201.

[0140] Of course, the first photovoltaic panel 100 can also be fixedly connected to the output end of the drive shaft 301 through the first connecting ring 101; or, the first photovoltaic panel 100 can be simultaneously connected to the fixing member 3 of the clutch mechanism and the output end of the drive shaft 301 through the first connecting ring 101.

[0141] The lever 7 of the first clutch mechanism 302 is connected to the outer end of the first pull rod 304, and the inner end of the first pull rod 304 is connected to the first wing of the T-shaped trigger 306;

[0142] The lever 7 of the second clutch mechanism 303 is connected to the outer end of the second pull rod 305, and the inner end of the second pull rod 305 is connected to the second wing of the T-shaped trigger 306.

[0143] When the trigger part 3062 of the trigger member 306 is subjected to force, it can simultaneously drive the moving part 4 of the first clutch mechanism 302 and the second clutch mechanism 303 to move closer to or further away from the fixed part 3, thereby simultaneously controlling the clutch state of the first clutch mechanism 302 and the second clutch mechanism 303.

[0144] More specifically, the two first connecting rings 101 of the first photovoltaic panel 100 are respectively fixedly connected to the fixing parts 3 of the first clutch mechanism 302 and the second clutch mechanism 303; the two second connecting rings 201 of the second photovoltaic panel 200 are respectively fixedly connected to the housings 1 of the first clutch mechanism 302 and the second clutch mechanism 303, as shown in the figure. Figure 9 , Figure 12 As shown; since the shell 1 and the moving part 4 are connected by a guide structure to achieve circumferential positioning, the second photovoltaic panel 200 and the moving part 4 are fixedly connected.

[0145] Obviously, the two first connecting rings 101 of the first photovoltaic panel 100 can also be directly connected to the output end of the drive shaft 301.

[0146] The working principle of this photovoltaic panel module is as follows:

[0147] Drive shaft 301 moves under the action of an external power mechanism; when drive shaft 301 moves to the vicinity of an object (e.g., a bracket for supporting photovoltaic panels), drive shaft 301 moves into position; at this time, trigger part 3062 of trigger member 306 contacts the object, and the object can provide a reaction force to trigger member 306. Trigger member 306 provides an inward pulling force to first pull rod 304 and second pull rod 305. First pull rod 304 and second pull rod 305 drive the lever 7 of first clutch mechanism 302 and second clutch mechanism 303 to move inward, thereby driving the moving part 4 of first clutch mechanism 302 and second clutch mechanism 303 to move away from fixed part 3, so that first clutch mechanism 302 and second clutch mechanism 303 are in a disengaged state;

[0148] At this time, the drive shaft 301 rotates around its own rotation axis. The drive shaft 301 drives the fixing parts 3 of the first clutch mechanism 302 and the second clutch mechanism 303, as well as the first photovoltaic panel 100, to rotate relative to the moving part 4. This causes the first photovoltaic panel 100 to rotate relative to the second photovoltaic panel 200, thereby realizing the flipping action between the two photovoltaic panels, allowing the photovoltaic panels to fold or unfold. Figure 10 , Figure 11 As shown;

[0149] The drive shaft 301 moves in the opposite direction under the action of the external power mechanism. When the drive shaft 301 moves away from the object, the trigger part 3062 of the trigger member 306 loses the reaction force of the object, the external force on the first pull rod 304 and the second pull rod 305 disappears, the moving parts 4 of the first clutch mechanism 302 and the second clutch mechanism 303 are reset, and the first clutch mechanism 302 and the second clutch mechanism 303 are in a connected state.

[0150] At this time, the first photovoltaic panel 100 and the second photovoltaic panel 200 are in a fixed connection state; the drive shaft 301 rotates around its own rotation axis, and the drive shaft 301 can drive the fixed part 3 and the moving part 4 to rotate synchronously, thereby driving the first photovoltaic panel 100 and the second photovoltaic panel 200 to rotate synchronously.

[0151] The fixing member 3 of this invention can rotate under the drive of the drive shaft 301, thereby causing circumferential rotation between the fixing member 3 and the moving member 4, which in turn causes the first photovoltaic panel 100 to flip relative to the second photovoltaic panel 200. Since the flip angle of the first photovoltaic panel 100 is completely determined by the rotation angle of the drive shaft 301, this invention can precisely control the flip angle of the photovoltaic panel.

[0152] During the movement of the photovoltaic panel of this invention, the clutch mechanism is triggered once the trigger element 306 contacts any object. Therefore, the folding action of this invention can be automatically triggered. The triggering of the clutch mechanism of this invention does not rely on sensors, which can save on the cost of the clutch mechanism.

[0153] It should be noted that in this embodiment, both ends of the drive shaft 301 are used as output ends, so two sets of clutch mechanisms are provided at both ends of the drive shaft 301. Those skilled in the art will understand that in some cases, only one end of the drive shaft 301 can be used as the output end. In this case, only one clutch mechanism is needed, and the relative rotation between the two photovoltaic panels can also be achieved.

[0154] As an embodiment of the photovoltaic device of this utility model, the photovoltaic device includes a photovoltaic panel assembly.

[0155] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A transmission mechanism for a photovoltaic panel, characterized in that, It includes a drive shaft and a clutch mechanism. The clutch mechanism includes a fixed part and a moving part arranged opposite to each other. The fixed part of the clutch mechanism is fixedly connected to the output end of the drive shaft. Under the action of external force, the moving part can move relative to the fixed part, so that the clutch state of the clutch mechanism is switched. When the clutch mechanism is in the engaged state, the rotation of the drive shaft can drive the fixed part and the moving part of the clutch mechanism to rotate synchronously; when the clutch mechanism is in the disengaged state, the rotation of the drive shaft can drive the fixed part of the clutch mechanism to rotate relative to the moving part.

2. The transmission mechanism for photovoltaic panels according to claim 1, characterized in that, The fixed component of the clutch mechanism and / or the output end of the drive shaft are used to fixally connect to the first load; the moving component of the clutch mechanism is used to fixally connect to the second load.

3. The transmission mechanism for photovoltaic panels according to claim 1, characterized in that, It also includes a pull rod, one end of which is connected to the moving part of the clutch mechanism.

4. The transmission mechanism for photovoltaic panels according to claim 3, characterized in that, It also includes a trigger, which includes a connecting part for connecting to the other end of the lever and a trigger part for receiving the external force; when the trigger part is subjected to force, it can transmit the external force to the lever through the connecting part, thereby providing the external force to the moving part.

5. The transmission mechanism for photovoltaic panels according to claim 4, characterized in that, There are two clutch mechanisms and two pull rods; the two clutch mechanisms are respectively located at both ends of the drive shaft; the other ends of the two pull rods are connected to the same trigger.

6. The transmission mechanism for a photovoltaic panel according to claim 4, characterized in that, The trigger portion is a protrusion on the trigger member that faces away from the drive shaft.

7. The transmission mechanism for photovoltaic panels according to claim 1, characterized in that, When the clutch mechanism is in the engaged state, the fixed part and the moving part form a surface contact fit.

8. The transmission mechanism for a photovoltaic panel according to claim 7, characterized in that, The fixing member has a protrusion facing the moving member, and the moving member has a recess that matches the protrusion; when the clutch mechanism is in the engaged state, the fixing member and the moving member can form a transmission connection through the cooperation of the protrusion and the recess.

9. The transmission mechanism for a photovoltaic panel according to claim 1, characterized in that, The clutch mechanism further includes: A housing, which covers the outside of the fixed member and the moving member, and the housing and the fixed member are capable of relative rotational movement; and A guide structure is provided, through which the moving part and the housing are circumferentially positioned and connected.

10. The transmission mechanism for a photovoltaic panel according to claim 9, characterized in that, The guide structure includes a groove formed in the housing and a protrusion formed on the moving member; or, the guide structure includes a protrusion formed in the housing and a groove formed on the moving member; the protrusion and the groove are adapted to each other.

11. The transmission mechanism for a photovoltaic panel according to claim 9, characterized in that, The clutch mechanism further includes: A lever, one end of which is connected to the moving component, and the other end of which is a free end; when the free end of the lever is subjected to force, it can provide the external force to the moving component.

12. The transmission mechanism for a photovoltaic panel according to claim 9, characterized in that, It also includes an elastic element that is connected to the moving element; when the external force disappears, the elastic element can provide a restoring force to the moving element.

13. The transmission mechanism for a photovoltaic panel according to claim 1, characterized in that, The drive shaft includes: Screw rod; A sliding sleeve is movably connected to the helical rod; the sliding sleeve and the helical rod are guided by a helical guide structure; the sliding sleeve can move linearly relative to the helical rod along its axial direction; and A transmission component is connected to the sliding sleeve; the transmission component includes an active component connected to a power source and a driven component disposed on the sliding sleeve; under the drive of the power source, the active component drives the driven component, thereby causing the sliding sleeve to move linearly along the axial direction of the helical rod.

14. The transmission mechanism for a photovoltaic panel according to claim 13, characterized in that, The sliding sleeve has a through hole, and the sliding sleeve is sleeved on the spiral rod through the through hole; the spiral guide structure is a spiral groove provided on the inner wall of the through hole and a spiral protrusion provided on the outer circumferential surface of the spiral rod. Alternatively, the spiral guide structure may be a spiral protrusion provided on the inner wall of the through hole and a spiral groove provided on the outer circumferential surface of the spiral rod; Alternatively, the spiral guide structure may consist of a first spiral groove disposed on the inner wall of the through hole, a second spiral groove disposed on the outer circumferential surface of the spiral rod, and a plurality of balls disposed between the first spiral groove and the second spiral groove.

15. The transmission mechanism for a photovoltaic panel according to claim 13, characterized in that, It also includes a housing, the outer peripheral surface of the sliding sleeve is formed with a first guide structure extending along the axial direction, and the housing is provided with a second guide structure adapted to the first guide structure; the first guide structure and the second guide structure cooperate with each other, and the sliding sleeve and the housing are movably connected.

16. The transmission mechanism for a photovoltaic panel according to claim 15, characterized in that, The first guide structure is a guide protrusion, and the second guide structure is a guide groove; Alternatively, the first guide structure may be a guide groove, and the second guide structure may be a guide protrusion; Alternatively, it may also include an intermediate component, wherein both the first and second guide structures are guide grooves, and the intermediate component is disposed between the first and second guide structures to form a guide fit.

17. A photovoltaic panel module, characterized in that, It includes at least a first photovoltaic panel and a second photovoltaic panel, and the first photovoltaic panel and the second photovoltaic panel are jointly connected to the transmission mechanism for the photovoltaic panel as described in any one of claims 1 to 16; The first photovoltaic panel is fixedly connected to the output end of the drive shaft and / or the fixing component of the clutch mechanism; The second photovoltaic panel is fixedly connected to the moving part of the clutch mechanism; When the clutch mechanism is engaged, the rotation of the drive shaft can drive the first photovoltaic panel and the second photovoltaic panel to rotate synchronously. When the clutch mechanism is disengaged, the rotation of the drive shaft can cause the first photovoltaic panel to rotate relative to the second photovoltaic panel.

18. A photovoltaic device, characterized in that, Including the photovoltaic panel module as described in claim 17.

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