Ratchet clutch and photovoltaic device

Abstract

The utility model relates to the field of clutches, in particular to a ratchet clutch and a photovoltaic device. The ratchet clutch comprises a first clutch assembly and a second clutch assembly which are coaxially arranged, the first clutch assembly is provided with a pawl, the second clutch assembly is provided with a ratchet wheel matched with the pawl, the first clutch assembly is provided with a switching assembly, and the switching assembly comprises a connecting piece, a transmission arm and a power assembly; the connecting piece is used for being connected with the pawl and driving the pawl to be connected with or separated from the ratchet wheel. The transmission arm comprises a hinge part, a first connecting part and a second connecting part, the transmission arm is hinged to the first clutch assembly through the hinge part, the first connecting part is connected with the connecting piece, and the second connecting part is connected with the power assembly. The photovoltaic device is provided according to the ratchet clutch. The ratchet clutch has the beneficial effects that the structure is simple, and ratchet clutch switching can be achieved without manpower.

Description

Technical Field

[0001] The utility model relates to the field of clutch, in particular to a ratchet clutch and a photovoltaic device. Background Art

[0002] A ratchet clutch is a device used to connect two objects. A ratchet clutch usually includes a pawl and a ratchet wheel. The ratchet wheel and the pawl enable the two connected objects to rotate relative to each other in one direction of rotation, or to drive the two connected objects in another direction of rotation. In order to achieve the rotation and transmission of the ratchet clutch, it is necessary to switch the matching state of the pawl and the ratchet wheel. The switching of existing ratchet clutches mostly relies on manual methods, which is time-consuming and labor-intensive, and it is difficult to achieve automatic switching.

[0003] Therefore, how to design a switching structure that can switch without manpower has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] Firstly, the utility model proposes a ratchet clutch to solve the problem that the switching components of the existing ratchet clutch are difficult to achieve automatic switching. Secondly, the utility model also discloses a photovoltaic device.

[0005] As a first aspect of the utility model, a ratchet clutch is proposed, comprising a first clutch assembly and a second clutch assembly arranged coaxially, wherein the first clutch assembly is provided with a pawl, the second clutch assembly is provided with a ratchet wheel matched with the pawl, and further comprising a switching assembly, the switching assembly being connected to the first clutch assembly; the first clutch assembly is provided with a switching assembly, the switching assembly comprising a connecting member, a transmission arm and a power assembly;

[0006] The connecting member is connected to the pawl and is used to drive the pawl to engage with or separate from the ratchet wheel;

[0007] The transmission arm comprises a hinged portion, a first connecting portion and a second connecting portion. The transmission arm is hinged to the first clutch assembly via the hinged portion. The first connecting portion is connected to the connecting piece, and the second connecting portion is connected to the power assembly.

[0008] Preferably, the connecting piece is sleeved with an elastic piece, the elastic piece is connected to the pawl, and the elastic piece applies an elastic force to the pawl toward the ratchet or away from the ratchet.

[0009] Preferably, the connecting member is provided with a threaded portion, and the connecting member and the pawl are threadedly connected.

[0010] Preferably, the transmission arm further includes a hinge portion, wherein the hinge portion is located between the first connection portion and the second connection portion, and the first connection portion and the second connection portion can rotate relative to each other around the hinge portion.

[0011] Preferably, the hinged portion is disposed between the connecting member and the power assembly, and the transmission arm further comprises an abutting portion, and when the power assembly drives the transmission arm to move, the abutting portion abuts against a side wall of the first clutch assembly.

[0012] Preferably, the first connecting portion includes a first extension and a second extension, the first extension is formed by extending from the second connecting portion in a direction away from the second connecting portion, the second extension is formed by extending from the second connecting portion in a direction away from the second connecting portion, and the hinge portion is arranged at the end of the first extension and / or the second extension.

[0013] Preferably, when the power assembly drives the transmission arm to rotate around the axis of the hinged portion, the transmission arm is movably connected to the connecting member and / or the transmission arm is movably connected to the power assembly.

[0014] Preferably, the second connecting portion is provided with at least one first guide portion, and the power assembly is provided with at least one second guide portion cooperating with the first guide portion, and through the cooperation between the first guide portion and the second guide portion, the transmission arm can move relative to the power assembly.

[0015] Preferably, the power assembly comprises a power source, a screw rod and a nut, the output end of the power source is connected to the screw rod, the screw rod is threadedly connected to the nut, and the nut is connected to the transmission arm.

[0016] Preferably, the second connecting portion is provided with at least one first guide portion, and the nut is provided with at least one second guide portion cooperating with the first guide portion, and through the cooperation between the first guide portion and the second guide portion, the transmission arm can move relative to the nut.

[0017] Preferably, the first guide portion or the second guide portion is a linear guide, and the nut is further connected to a first sensor for detecting a movement range of the nut.

[0018] Preferably, the power source is a motor, and the power source is connected to the first sensor.

[0019] Preferably, the ratchet clutch further comprises a second sensor, and the second sensor is used to detect the rotation range of the transmission arm.

[0020] Preferably, the ratchet clutch further comprises a transmission chamber for accommodating the switching assembly, and a through position is provided on one side of the transmission chamber, and the connecting member can pass through the through position to be connected with the ratchet pawl.

[0021] As a second aspect of the present utility model, a photovoltaic device is provided, comprising the ratchet clutch described above, and further comprising a drive shaft assembly, a first photovoltaic panel, and a second photovoltaic panel;

[0022] The ratchet clutch is fixedly connected to the output end of the drive shaft assembly through the first clutch assembly or the second clutch assembly;

[0023] The first photovoltaic panel is connected to the first clutch assembly, and the second photovoltaic panel is connected to the second clutch assembly.

[0024] The beneficial effects of the utility model are:

[0025] 1. The ratchet clutch switching assembly proposed by the utility model is provided with a power assembly, which can automatically drive the pawl to move, so as to realize the automatic switching and coordination between the ratchet and the pawl without manual operation. In this way, the clutch is less dependent on manual engagement and disengagement, and the degree of automation of the ratchet clutch is improved.

[0026] 2. When the power source and the first sensor are powered on or communicated with the outside, at least two lines are often required to be opened separately. In the implementation mode where the power source is a motor and the motor is connected to the first sensor, the motor and the first sensor are connected through a PCB board. Only one line is needed to be directly connected to the PCB board to achieve the connection between the power source and the first sensor, which reduces the number of lines, improves the integration of the structure, and has unique advantages in locations with relatively small spaces.

[0027] 3. The transmission arm is provided with a first connection part, which is composed of a first extension and a second extension. The first extension and the second extension both extend from the second connection part in opposite directions, and together form a "U"-shaped groove structure. The hinged part is cleverly arranged at the end of the first extension and / or the second extension. Such a design not only ensures the connection between the first connection part and the corresponding component, but also the hinged part at the end thereof can prevent the connection part from accidentally falling off from the transmission arm while being hinged with the second clutch part, thus realizing the combination of multiple technical effects in a single part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the ratchet clutch proposed in this embodiment.

[0029] Figure 2 for Figure 1 A diagram of a perspective

[0030] Figure 3 for Figure 2 Section view at AA.

[0031] Figure 4 This is a schematic diagram of an exploded view of the switching component proposed in this embodiment.

[0032] Figure 5 for Figure 3 Schematic diagram of the transmission arm.

[0033] Figure 6 is a schematic diagram of a photovoltaic device proposed in this embodiment.

[0034] Figure 7 It is a schematic diagram of the photovoltaic device proposed in this embodiment in a folded state.

[0035] in:

[0036] 1. first clutch assembly; 11. ratchet; 12. transmission chamber; 121. through position;

[0037] 2. Second clutch assembly; 21. Ratchet;

[0038] 3. Switching assembly; 31. Connecting piece; 311. Threaded portion;

[0039] 32, transmission arm; 321, hinged portion; 322, first connecting portion; 323, second connecting portion;

[0040] 33. Power assembly; 331. Motor; 332. Screw rod; 333. Nut; 3331. Second guide portion;

[0041] 34. The first sensor.

[0042] 4. Ratchet clutch; 5. Drive shaft assembly; 6. First photovoltaic panel; 7. Second photovoltaic panel; 8. Column. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with specific drawings.

[0044] like Figures 1 to 3 A ratchet clutch 4 is shown, comprising a first clutch assembly 1 and a second clutch assembly 2 which are coaxially arranged, wherein the first clutch assembly 1 is provided with a pawl 11, and the second clutch assembly 2 is provided with a ratchet 21 which matches the pawl 11, and the first clutch assembly 1 is provided with a switching assembly 3, and the switching assembly 3 comprises a connecting member 31, a transmission arm 32 and a power assembly 33. The connecting member 31 is used to connect with the pawl 11 and drive the pawl 11 to engage or disengage with the ratchet 21. The transmission arm 32 comprises a hinged portion 321, a first connecting portion 322 and a second connecting portion 323, and the transmission arm 32 is hinged to the first clutch assembly 1 through the hinged portion 321, the first connecting portion 322 is connected to the connecting member 31, and the second connecting portion 323 is connected to the power assembly 33.

[0045] About the connector 31: The connector 31 is mainly used to connect with the pawl 11, and the connection with the pawl 11 can be a direct connection or an indirect connection through other components. The connector 31 usually has a certain rigidity, and can be used in application scenarios that require a large switching force or a high stability. In some embodiments, the connector 31 may also have a certain flexibility, such as in the shape of a wire or a line. In this case, the connector 31 is suitable for application scenarios that require a low switching force and require flexible settings. The connector 31 and the pawl 11 can be connected by a fixed connection or by a movable connection. In the embodiment where the connector 31 and the pawl 11 are fixedly connected, such as Figure 3 As shown, the connecting member 31 is provided with a threaded portion 311 for threaded connection with the pawl 11, and is connected to the pawl 11 by threaded connection. The pawl 11 may be provided with a hole matched with the threaded portion 311, or provided with a nut 333 matched with the threaded portion 311. In addition, it can also be fixedly connected by welding, clamping, etc. The connecting member 31 and the pawl 11 are fixedly connected, so that the pawl 11 can be switched in time due to the movement of the connecting member 31, which helps to improve the timeliness of the clutch switching of the ratchet 21.

[0046] In some embodiments, when the power assembly 33 drives the transmission arm 32 to rotate around the axis of the hinge portion 321 , the transmission arm 32 is movably connected to the connecting member 31 and / or the transmission arm 32 is movably connected to the power assembly 33 .

[0047] Regarding the movable connection between the transmission arm 32 and the connecting member 31: the transmission arm 32 can drive the connecting member 31 to move in a certain direction, but in another direction, the transmission arm 32 and the connecting member 31 can move relative to each other. Figure 4 and Figure 5 In some embodiments shown, the first connecting portion 322 includes a first extension and a second extension, the first extension is formed by extending from the second connecting portion 323 in a direction away from the second connecting portion 323, and the second extension is formed by extending from the second connecting portion 323 in a direction away from the second connecting portion 323, the first extension and the second extension form a "U"-shaped groove, the hinge portion 321 is provided at the end of the first extension and / or the second extension, one end of the connecting member 31 is connected to the pawl 11 and the other end is inserted into the above-mentioned "U"-shaped groove, as shown in FIG. Figure 3As shown, the hinged portion 321 located at the end of the first connecting portion 322 can also prevent the connecting member 31 from detaching from the transmission arm 32 to a certain extent. When the transmission arm 32 drives the connecting member 31 to move in a direction away from the ratchet 21 around the hinge axis, since the connecting member 31 is stuck in the first connecting portion 322, the transmission arm 32 and the connecting member 31 move synchronously; when the transmission arm 32 moves around the hinge axis toward the direction close to the ratchet 21, the transmission arm 32 cannot drive the connecting member 31 to move synchronously. Therefore, in some embodiments, the pawl 11 is connected to the elastic component, and the elastic component applies a force on the pawl 11 to move in a direction close to the ratchet 21 so that the pawl 11 engages with the ratchet 21.

[0048] In other embodiments, Figure 3 As shown, the elastic member is sleeved on the connecting member 31 and is arranged between the pawl 11 and the connecting member 31. The elastic member applies a force to the connecting member 31 and the pawl 11 to move toward the ratchet 21. At this time, the elastic member can be integrated with the connecting member 31, thereby optimizing the internal space of the clutch.

[0049] Regarding the movable connection between the transmission arm 32 and the power assembly 33: In some embodiments, the second connection portion 323 is provided with at least one first guide portion, and the power assembly 33 is provided with at least one second guide portion 3331 that matches the first guide portion. Through the cooperation of the first guide portion and the second guide portion 3331, the transmission arm 32 can move relative to the power assembly 33. Figure 3 In some embodiments shown, the power assembly 33 includes a power source, a screw rod 332 and a nut 333. The output end of the power source is connected to the screw rod 332, the screw rod 332 is connected to the nut 333, and the nut 333 is connected to the transmission arm 32. The first guide portion or the second guide portion 3331 is a linear guide, and the nut 333 is also connected to a first sensor 34 for detecting the motion range of the nut 333. Figure 3 In some of the embodiments shown, the second connecting portion 323 is provided with at least one first guide portion, and the nut 333 is provided with at least one second guide portion 3331 cooperating with the first guide portion. Through the cooperation between the first guide portion and the second guide portion 3331, the transmission arm 32 can move relative to the nut 333.

[0050] Regarding the setting of the detection switching component 3: Figure 3In some of the embodiments shown, the motion range of the nut 333 is detected by the first sensor 34. In fact, the detection of the state of the switching component 3 can be more than the first sensor 34. The ratchet clutch 4 can also include a second sensor, which is used to detect the rotation range of the transmission arm 32. The second sensor can be an angle sensor set on the transmission arm 32. It should be noted that the first sensor 34 and the second sensor can coexist or exist separately. In the embodiment where the first sensor 34 and the second sensor are provided at the same time, multiple sensors can improve the detection accuracy through comparison or feedback.

[0051] About the power assembly 33: The power assembly 33 includes a power source, a screw rod 332 and a nut 333. The output end of the power source is connected to the screw rod 332, the screw rod 332 is connected to the nut 333, and the nut 333 is connected to the transmission arm 32. Figure 3 In the embodiment shown, the power source is a motor 331, which can provide the function relatively simply and stably by supplying electricity. In other embodiments, the power source can be hydraulic pressure, air pressure, etc., and the screw rod 332 and the nut 333 can also be implemented in an embodiment that can be understood by technicians in the relevant field to achieve the same working effect.

[0052] In some embodiments where the power source is the motor 331 , the ratchet clutch 4 further includes a PCB board, the first sensor 34 is disposed on the PCB board, and the power source is connected to the first sensor 34 via the PCB board.

[0053] In some embodiments, the transmission arm 32 further includes a hinge portion, the hinge portion is located between the first connection portion 322 and the second connection portion 323, and the first connection portion 322 and the second connection portion 323 can rotate relative to each other around the hinge portion 321. At this time, when the power assembly 33 drives the transmission arm 32 to rotate around the axis of the hinge portion 321, the first connection portion 322 and the second connection portion 323 rotate relative to each other around the hinge portion 321. In this embodiment, the transmission arm 32 can be movably connected or fixedly connected to the connecting member 31, and the transmission arm 32 can be movably connected or fixedly connected to the power assembly 33.

[0054] In some embodiments, the hinged portion 321 is disposed between the connecting member 31 and the power assembly 33, and the transmission arm 32 further includes an abutting portion. When the power assembly 33 drives the transmission arm 32 to move, the abutting portion abuts against the transmission chamber 12. The abutting portion has a similar effect to the lever principle. When the power assembly 33 drives the transmission arm 32 to move, the connecting member 31 at the other end of the transmission arm 32 is pried up by the abutting portion, and the connecting member 31 drives the pawl 11 to separate the pawl 11 from the ratchet 21. The setting of the abutting portion allows the power assembly 33 to achieve the switching of the connecting member 31 to drive the pawl 11 with only a small force.

[0055] In some embodiments, the power assembly 33 is disposed near the ratchet 21. Figure 3 As shown, by using the connecting member 31 , the transmission arm 32 and the power assembly 33 , the power assembly 33 can be integrated near the ratchet 21 , thereby improving the integration of the clutch of the ratchet 21 .

[0056] In some embodiments, the ratchet clutch 4 further includes a transmission chamber 12 for accommodating the switching assembly 3 , and a through position 13 is provided on one side of the transmission chamber 12 , and the connecting member 31 can pass through the through position 13 to be connected with the pawl 11 .

[0057] Regarding the transmission chamber 12: the transmission chamber 12 is mainly used to set the connecting member 31, the power assembly 33 and the transmission arm 32. The transmission chamber 12 and the ratchet 21 clutch can be set separately and fixedly connected, or directly set on the ratchet 21 clutch. In addition, the transmission chamber 12 can be composed of multiple chambers but needs to meet the linkage requirements of the connecting member 31, the power assembly 33 and the transmission arm 32. As for the position of the through position 13, such as Figure 3 The through-position 13 shown is arranged on the side wall of the transmission chamber 12, and the connecting member 31 is connected to the pawl 11 after passing through the side wall. After the connecting member 31 passes through the through-position 13, the through-position 13 can allow the connecting member 31 to move in the through-position 13 without contacting the through-position 13. The transmission chamber 12 can provide the connecting member 31, the power assembly 33 and the transmission arm 32 with functions such as protection and dustproof, and the transmission chamber 12 can also be provided with air holes to prevent water vapor or excessive moisture from being generated therein due to temperature differences and other reasons.

[0058] As a second aspect of the present invention, Figure 6 As shown, a photovoltaic device is proposed, including the above-mentioned ratchet clutch 4, and also including a drive shaft assembly 5, a first photovoltaic panel 6, a second photovoltaic panel 7 and a column 8. The ratchet 21 clutch is fixedly connected to the output end of the drive shaft assembly 5 through the first clutch assembly 1 or the second clutch assembly 2, and the drive shaft assembly 5 and the column 8 are connected. The first photovoltaic panel 6 is connected to the first clutch assembly 1, and the second photovoltaic panel 7 is connected to the second clutch assembly 2. By applying the ratchet clutch 4, the above-mentioned photovoltaic device can use a set of drive shaft assemblies 5 to perform solar energy tracking while automatically switching through the switching assembly 3 to achieve the following. Figure 7 The photovoltaic device is shown in its folded state.

[0059] Since the photovoltaic device proposed in this embodiment is arranged in a higher scene such as a street lamp or a pillar 8, if manpower is used to switch the clutch, it is often difficult and wastes human resources. By applying the ratchet clutch 4 with automatic switching function proposed in this embodiment, the level of automation can be improved while improving work efficiency.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0061] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the present utility model patent should fall within the scope of the present utility model.

Claims

1. A ratchet clutch, comprising a first clutch assembly and a second clutch assembly coaxially arranged, wherein the first clutch assembly is provided with a pawl, and the second clutch assembly is provided with a ratchet wheel matched with the pawl, characterized in that: It also includes a switching assembly, the switching assembly is connected to the first clutch assembly. The first clutch assembly is provided with a switching assembly, and the switching assembly includes a connecting member, a transmission arm and a power assembly; The connecting member is connected to the pawl and is used to drive the pawl to engage with or separate from the ratchet wheel; The transmission arm comprises a hinged portion, a first connecting portion and a second connecting portion. The transmission arm is hinged to the first clutch assembly via the hinged portion. The first connecting portion is connected to the connecting piece, and the second connecting portion is connected to the power assembly.

2. The ratchet clutch according to claim 1, characterized in that: The connecting piece is sleeved with an elastic piece, the elastic piece is connected to the pawl, and the elastic piece applies an elastic force to the pawl toward the ratchet or away from the ratchet.

3. The ratchet clutch according to claim 1, characterized in that: The connecting piece is provided with a threaded portion, and the connecting piece and the pawl are threadedly connected.

4. The ratchet clutch according to claim 1, characterized in that: The transmission arm further includes a hinge portion, wherein the hinge portion is located between the first connection portion and the second connection portion, and the first connection portion and the second connection portion can rotate relative to each other around the hinge portion.

5. The ratchet clutch according to claim 1, characterized in that: The hinged portion is arranged between the connecting member and the power assembly, and the transmission arm further comprises a supporting portion. When the power assembly drives the transmission arm to move, the supporting portion is supported by a side wall of the first clutch assembly.

6. The ratchet clutch according to claim 1, characterized in that: The first connection portion includes a first extension and a second extension, the first extension is formed by extending from the second connection portion in a direction away from the second connection portion, and the second extension is formed by extending from the second connection portion in a direction away from the second connection portion, and the hinge portion is arranged at the end of the first extension and / or the second extension.

7. The ratchet clutch according to claim 1, characterized in that: The transmission arm is movably connected to the connecting member and / or the transmission arm is movably connected to the power assembly.

8. The ratchet clutch according to claim 7, characterized in that: The second connecting portion is provided with at least one first guide portion, and the power assembly is provided with at least one second guide portion matched with the first guide portion. Through the cooperation between the first guide portion and the second guide portion, the transmission arm can move relative to the power assembly.

9. The ratchet clutch according to claim 1, characterized in that: The power assembly comprises a power source, a screw rod and a nut. The output end of the power source is connected to the screw rod, the screw rod is threadedly connected to the nut, and the nut is connected to the transmission arm.

10. The ratchet clutch according to claim 9, characterized in that: The second connecting portion is provided with at least one first guide portion, and the nut is provided with at least one second guide portion matched with the first guide portion. Through the cooperation between the first guide portion and the second guide portion, the transmission arm can move relative to the nut.

11. The ratchet clutch according to claim 10, characterized in that: The first guide portion or the second guide portion is a linear guide, and the nut is further connected to a first sensor for detecting a movement range of the nut.

12. The ratchet clutch according to claim 11, characterized in that: The power source is a motor, the ratchet clutch further comprises a PCB board, the first sensor is arranged on the PCB board, and the power source is connected to the first sensor via the PCB board.

13. The ratchet clutch according to claim 1, characterized in that: The ratchet clutch further comprises a second sensor, and the second sensor is used for detecting the rotation range of the transmission arm.

14. The ratchet clutch according to claim 1, characterized in that: The ratchet clutch also includes a transmission chamber for accommodating the switching assembly. A through position is provided on one side of the transmission chamber, and the connecting member can pass through the through position to be connected with the ratchet pawl.

15. A photovoltaic device, characterized in that: The ratchet clutch according to any one of claims 1 to 14, further comprising a drive shaft assembly, a first photovoltaic panel and a second photovoltaic panel; The ratchet clutch is fixedly connected to the output end of the drive shaft assembly through the first clutch assembly or the second clutch assembly; The first photovoltaic panel is connected to the first clutch assembly, and the second photovoltaic panel is connected to the second clutch assembly.

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