Bilateral buckle type plastic bearing piece for solar photovoltaic tracking support

Abstract

The utility model provides a double-side buckle type plastic bearing piece for a solar photovoltaic tracking bracket. The double-side buckle type plastic bearing piece comprises a first bearing split body and a second bearing split body, one end of the first bearing split body is provided with a first buckling part and the other end is provided with a second buckling part; one end of the second bearing split body is provided with a third buckle part and the other end is provided with a fourth buckle part; the first buckling part comprises a first buckling unit and a second buckling unit; the first buckle unit comprises a first connecting block, a first clamping block and a first L-shaped hook groove; an inclined groove, a first arc transition surface and a first inclined boss are formed on the surface of the first clamping block; the second buckle unit comprises a second connecting block, a second clamping block and a second L-shaped hook groove; and a flat groove, a second arc transition surface and a second inclined boss are formed on the surface of the second clamping block. The inclined boss and the groove are designed without additional limiting parts, the first bearing split body and the second bearing split body form an integral bearing piece which does not move or fall off only by means of self deformation of the plastic bearing piece, and the rotating and slipping phenomenon between the bearing and the main shaft is avoided.

Description

A double-sided snap-fit ​​plastic bearing for a solar photovoltaic tracking bracket Technical Field

[0001] This utility model relates to the field of photovoltaic tracking brackets, specifically to a double-sided snap-fit ​​plastic bearing for solar photovoltaic tracking brackets. Background Technology

[0002] Driven by market, technological, and policy factors, photovoltaic (PV) tracking brackets have developed rapidly in recent years, significantly contributing to increasing the total power generation of PV power plants. In the PV bracket field, the split-type design of the bearings, whether spherical or cylindrical, has been widely used for a long time. For multi-sided spindles, although the bearing's through-hole design cross-section matches the spindle's cross-section, the upper and lower bearings are not a single unit. Furthermore, machining and installation dimensional errors in actual use result in gaps between the spindle and the bearing, making slippage a significant risk. Current industry solutions often involve adding additional connectors or designing a mating assembly structure on the bearing to combine the upper and lower bearings into a single unit. However, adding connectors increases material costs and is inefficient for installation. The mating assembly structure does not restrict the bearing's insertion direction, especially for cylindrical bearings; the overall integrity after assembly is not high, and the risk of movement in the insertion direction remains. Therefore, cylindrical bearings often have additional flanges or clamps added in the bearing mating direction to limit and fix the bearing. However, this method further exacerbates the problems of increased costs and complicated installation.

[0003] In view of this, this case involves in-depth research into the aforementioned issues, which led to the formation of this case. Summary of the Invention [Summary of the Utility Model]

[0004] This invention aims to solve the technical problems existing in the plastic bearings of the prior art by providing a double-sided snap-fit ​​plastic bearing component for solar photovoltaic tracking brackets. Whether it is a spherical bearing or a cylindrical bearing, the inclined bosses and grooves designed at both ends of the plastic bearing eliminate the need for additional bolts or other limiting parts. The split plastic bearings are combined into a whole bearing component without shifting or falling off, simply by the deformation of the plastic bearing itself. This avoids the rotational slippage between the bearing component and the main shaft and simplifies the installation process.

[0005] This utility model is implemented as follows: A double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket includes a first bearing assembly and a second bearing assembly; the first bearing assembly and the second bearing assembly are fastened together by multiple identical snap-fit ​​parts; each snap-fit ​​part includes a first snap-fit ​​unit and a second snap-fit ​​unit; the first snap-fit ​​unit includes a first connecting block, a first locking block, and a first L-shaped hook groove, and the surface of the first locking block is formed with an oblique groove, a first arc transition surface, and a first oblique boss from the inside to the outside; the second snap-fit ​​unit includes a second connecting block, a second locking block, and a second L-shaped hook groove; the surface of the second locking block is formed with a flat groove, a second arc transition surface, and a second oblique boss from the inside to the outside.

[0006] Furthermore, one side of the first connecting block and the first locking block is integrally formed with the first bearing, and the other side is integrally formed with the second connecting block; the projection surface of the second locking block on the first latching unit is located in the area of ​​the first L-shaped hook groove.

[0007] Furthermore, the inclined groove is connected to the first L-shaped hook groove, and the inclined groove and the first L-shaped hook groove are arranged facing the outside of the first bearing assembly; the flat groove is connected to the second L-shaped hook groove, and the flat groove and the second L-shaped hook groove are arranged facing the inside of the first bearing assembly.

[0008] Furthermore, the latching part includes a first latching part fixed to one end of the first bearing segment, a second latching part fixed to the other end of the first bearing segment, a third latching part fixed to one end of the second bearing segment and cooperating with the first latching part, and a fourth latching part fixed to the other end of the second bearing segment and cooperating with the second latching part; the first latching part, the second latching part, the third latching part, and the fourth latching part have the same structure.

[0009] Furthermore, the first bearing segment has a first semi-through groove, and the second bearing segment has a second semi-through groove; after the first bearing segment and the second bearing segment are engaged, the first semi-through groove and the second semi-through groove constitute a through-hole for the main shaft to pass through.

[0010] Furthermore, the shape of the through-hole is any polygonal or irregular cross-section that matches the shape of the main axis cross-section.

[0011] Furthermore, the inner wall of the first bearing segment has a plurality of first weight-reducing holes; the inner wall of the second bearing segment has a plurality of second weight-reducing holes.

[0012] Furthermore, the double-sided snap-fit ​​plastic bearing component is a spherical double-sided snap-fit ​​plastic bearing component.

[0013] Furthermore, the double-sided snap-fit ​​plastic bearing component is a cylindrical double-sided snap-fit ​​plastic bearing component.

[0014] Furthermore, the first bearing segment is provided with a first single-sided flange on its end face, which is located at the end of the first bearing segment near the first connecting block. The second bearing segment is provided with a second single-sided flange on its end face, which is located at the end of the second bearing segment near the first connecting block.

[0015] The advantages of this utility model are:

[0016] 1. The double-sided snap-fit ​​plastic bearing component of this utility model, by designing inclined bosses and grooves at both ends of the bearing body, allows the first and second bearing bodies to be combined into a whole without movement or falling off, simply by the deformation of the plastic bearing component itself, without the need for additional bolts or other limiting parts. This avoids the phenomenon of rotational slippage between the bearing and the spindle, simplifies the installation steps, improves the convenience of disassembly and assembly, and saves material and labor costs.

[0017] 2. During the assembly of the first and third latching parts, there is an interference fit between the second inclined boss of the first latching part and the first inclined boss of the third latching part when they slide. This interference is overcome by the elastic deformation of the plastic material itself, continuing until the second arc transition surface of the first latching part passes over the first arc transition surface of the third latching part, at which point the interference fit disappears. At this point, the second inclined boss of the first latching part and the inclined groove of the third latching part are in close contact, and the inclined groove of the first latching part and the second inclined boss of the third latching part are in close contact. Similarly, the second and fourth latching parts at the other end also engage in this manner. After engagement, the first and second bearing components will not rotate relative to each other or move laterally. The flat groove of the first latching part and the first inclined boss of the third latching part do not engage, and the first inclined boss of the first latching part and the flat groove of the third latching part do not engage. This avoids the problem of the bearing splicing surface being too constrained and unable to be assembled if both parts were in close contact. Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 is a structural schematic diagram of the double-sided snap-fit ​​plastic bearing component in this utility model.

[0020] Figure 2 is an exploded view of the double-sided snap-fit ​​plastic bearing component of this utility model.

[0021] Figure 3 is a side view of the first bearing assembly in this utility model.

[0022] Figure 4 is a cross-sectional view at point AA in Figure 3.

[0023] Figure 5 is a cross-sectional view of section BB in Figure 3.

[0024] Figure 6 is a schematic diagram of the structure of the first inclined boss and the second inclined boss when they just come into contact and slide.

[0025] Figure 7 is a schematic diagram of the structure of the first and second circular arc transition surfaces in this utility model when they are subjected to interference sliding.

[0026] Figure 8 is a schematic diagram of the structure of the flat groove and the first oblique protrusion after they are snapped together in this utility model.

[0027] Figure 9 is a schematic diagram of the installation structure of the double-sided snap-fit ​​plastic bearing component and bearing housing in this utility model.

[0028] Figure 10 is a structural schematic diagram of the cylindrical double-sided snap-fit ​​plastic bearing component in this utility model.

[0029] Reference numerals: First bearing body 100, first snap-fit ​​part 101, second snap-fit ​​part 102, first semi-through groove 103, first weight-reducing hole 104, first single-sided flange 105, second bearing body 200, third snap-fit ​​part 201, fourth snap-fit ​​part 202, second semi-through groove 203, second weight-reducing hole 204, second single-sided flange 205, main shaft 300, bearing seat 400, first snap-fit ​​unit 1, first connecting block 11, first locking block 12, first L-shaped hook groove 13, oblique groove 14, first arc transition surface 15, first oblique boss 16, second snap-fit ​​unit 2, second connecting block 21, second locking block 22, second L-shaped hook groove 23, flat groove 24, second arc transition surface 25, second oblique boss 26. Detailed Implementation Methods

[0030] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0032] Please refer to Figures 1 to 10. This utility model provides a double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket, including a first bearing assembly 100 and a second bearing assembly 200; the first bearing assembly 100 and the second bearing assembly 200 are fastened together by multiple identical snap-fit ​​parts. The snap-fit ​​part includes a first snap-fit ​​unit 1 and a second snap-fit ​​unit 2; the first snap-fit ​​unit 1 includes a first connecting block 11, a first locking block 12 and a first L-shaped hook groove 13, and the surface of the first locking block 12 is formed with a slanted groove 14, a first arc transition surface 15 and a first slanted boss 16 from the inside to the outside. The second snap-fit ​​unit 2 includes a second connecting block 21, a second locking block 22 and a second L-shaped hook groove 23; the surface of the second locking block 22 is formed with a flat groove 24, a second arc transition surface 25 and a second slanted boss 26 from the inside to the outside. The first L-shaped hook groove 13 of the first latching part 101 is used to accommodate the second connecting block 21 and the second locking block 22 of the third latching part 201; the second L-shaped hook groove 23 is used to accommodate the first connecting block 11 and the first locking block 12 of the third latching part 201. As shown in Figures 6-8, when the first latching part 101 and the third latching part 201 are assembled, there is an interference when the second oblique protrusion 26 of the first latching part 101 slides against the first oblique protrusion 16 of the third latching part 201. The sliding continues due to the elastic deformation of the plastic material itself until the second arc transition surface 25 of the first latching part 101 slides over the first arc transition surface 15 of the third latching part 201, at which point the interference disappears. At this time, the second oblique protrusion 26 of the first latching part 101 and the oblique groove 14 of the third latching part 201 are in close contact, and the oblique groove 14 of the first latching part 101 and the second oblique protrusion 26 of the third latching part 201 are in close contact. Similarly, the second latching part 102 and the fourth latching part 202 at the other end also engage with each other in this way. After engagement, the first bearing split 100 and the second bearing split 200 will not rotate relative to each other or move left and right relative to each other. As shown in Figure 8, the flat groove 24 of the first latching part 101 does not fit with the first oblique protrusion 16 of the third latching part 201, and the first oblique protrusion 16 of the first latching part 101 does not fit with the flat groove 24 of the third latching part 201. This avoids the problem that if both parts fit together, the bearing split splicing surface will be too constrained and unable to be assembled.

[0033] This utility model's double-sided snap-fit ​​plastic bearing component, by designing inclined bosses and grooves at both ends of the bearing body, allows the first bearing body 100 and the second bearing body 200 to be combined into a whole without movement or falling off, simply by deforming the plastic bearing component itself, without the need for additional bolts or other limiting parts. This avoids the rotational slippage between the bearing seat 400 and the spindle 300, simplifies the installation steps, improves the convenience of disassembly and assembly, and saves material and labor costs.

[0034] The latching parts include a first latching part 101 fixed to one end of the first bearing segment 100, a second latching part 102 fixed to the other end of the first bearing segment 100, a third latching part 201 fixed to one end of the second bearing segment 200 and cooperating with the first latching part 101, and a fourth latching part 202 fixed to the other end of the second bearing segment 200 and cooperating with the second latching part 102; the first latching part 101, the second latching part 102, the third latching part 201, and the fourth latching part 202 have the same structure. Standardized design achieves structural uniformity for each latching part, eliminating the need for directional identification and improving production and installation efficiency. When the first bearing assembly 100 and the second bearing assembly 200 are assembled, the first snap-fit ​​part 101 of the first bearing assembly 100 and the third snap-fit ​​part 201 of the second bearing assembly 200 are engaged, and the second snap-fit ​​part 102 of the first bearing assembly 100 and the fourth snap-fit ​​part 202 of the second bearing assembly 200 are engaged. Using the double-sided snap-fit ​​plastic bearing component of this utility model, the upper bearing assembly can be prevented from slipping when the spindle 300 rotates, ensuring the synchronization of the rotation angle between the spindle 300 and the bearing seat 400.

[0035] In this utility model, as shown in Figures 4-5, one side of the first connecting block 11 and the first locking block 12 is integrally formed with the first bearing split 100, and the other side is integrally formed with the second connecting block 21; the projection surface of the second locking block 22 on the first locking unit 1 is located in the area of ​​the first L-shaped hook groove 13. By integrally forming the first connecting block 11 and the first locking block 12 with the first bearing split 100 and the second connecting block 21, the structural integrity of the first locking part 101 is enhanced, avoiding the stress concentration problem caused by the split connection. By designing the projection surface of the second locking block 22 on the first locking unit 1 to be located in the area of ​​the first L-shaped hook groove 13, the second locking block 22 and the first locking block 12 are vertically misaligned in the longitudinal space, which facilitates the pairwise engagement between the locking parts.

[0036] In this utility model, as shown in Figures 4-5, the inclined groove 14 communicates with the first L-shaped hook groove 13, and the inclined groove 14 and the first L-shaped hook groove 13 are arranged facing the outside of the first bearing assembly 100; the flat groove 24 communicates with the second L-shaped hook groove 23, and the flat groove 24 and the second L-shaped hook groove 23 are arranged facing the inside of the first bearing assembly 100. The outward communication between the inclined groove 14 and the first L-shaped hook groove 13 forms a guide channel, which facilitates the sliding and positioning of the second locking block 22 of the third locking part 201; the inward communication between the flat groove 24 and the second L-shaped hook groove 23 forms a guide channel, which facilitates the sliding and positioning of the first locking block 12 of the third locking part 201. This complementary inner and outer guiding design enables the locking unit to have a limiting function, simplifying the assembly operation while significantly improving the locking reliability.

[0037] In this invention, as shown in Figure 1, the first bearing assembly 100 has a first semi-through groove 103, and the second bearing assembly 200 has a second semi-through groove 203. After the first bearing assembly 100 and the second bearing assembly 200 are engaged, the first semi-through groove 103 and the second semi-through groove 203 constitute a through-hole for the main shaft 300 to pass through. The shape of the through-hole is any polygon or irregular cross-section that matches the cross-sectional shape of the main shaft 300. Preferably, the shape of the through-hole is a regular octagon.

[0038] In this invention, as shown in Figure 2, the inner wall of the first bearing segment 100 has a plurality of first weight-reducing holes 104; the inner wall of the second bearing segment 200 has a plurality of second weight-reducing holes 204. The plurality of first weight-reducing holes 104 are arranged at equal intervals, and the plurality of second weight-reducing holes 204 are arranged at equal intervals, thereby reducing the amount of material used.

[0039] As one specific implementation, the double-sided snap-fit ​​plastic bearing component is a spherical double-sided snap-fit ​​plastic bearing component.

[0040] As another specific embodiment, as shown in Figure 10, the double-sided snap-fit ​​plastic bearing component is a cylindrical double-sided snap-fit ​​plastic bearing component. When it is a cylindrical double-sided snap-fit ​​plastic bearing component, the end face of the first bearing body 100 is provided with a first single-sided flange 105, which is located at the end of the first bearing body 100 near the first connecting block 11. The end face of the second bearing body 200 is provided with a second single-sided flange 205, which is located at the end of the second bearing body 200 near the first connecting block 11. By designing the single-sided flange, it is possible to prevent the cylindrical double-sided snap-fit ​​plastic bearing component from sliding out of the bearing seat 400.

[0041] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket, comprising a first bearing assembly and a second bearing assembly; the first bearing assembly and the second bearing assembly are interlocked by a plurality of identical snap-fit ​​parts; characterized in that: The latching part includes a first latching unit and a second latching unit; the first latching unit includes a first connecting block, a first locking block and a first L-shaped hook groove, and the surface of the first locking block is formed with an oblique groove, a first arc transition surface and a first oblique boss from the inside to the outside; the second latching unit includes a second connecting block, a second locking block and a second L-shaped hook groove; the surface of the second locking block is formed with a flat groove, a second arc transition surface and a second oblique boss from the inside to the outside.

2. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 1, characterized in that: One side of the first connecting block and the first locking block is integrally formed with the first bearing, and the other side is integrally formed with the second connecting block; the projection surface of the second locking block on the first locking unit is located in the area of ​​the first L-shaped hook groove.

3. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 2, characterized in that: The oblique groove is connected to the first L-shaped hook groove, and the oblique groove and the first L-shaped hook groove are arranged facing the outside of the first bearing body; the flat groove is connected to the second L-shaped hook groove, and the flat groove and the second L-shaped hook groove are arranged facing the inside of the first bearing body.

4. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 3, characterized in that: The latching part includes a first latching part fixed to one end of the first bearing segment, a second latching part fixed to the other end of the first bearing segment, a third latching part fixed to one end of the second bearing segment and cooperating with the first latching part, and a fourth latching part fixed to the other end of the second bearing segment and cooperating with the second latching part; the first latching part, the second latching part, the third latching part, and the fourth latching part have the same structure.

5. The dual sided snap-on plastic bearing for solar photovoltaic tracking racking supports of claim 4, wherein: The first bearing assembly has a first semi-through groove, and the second bearing assembly has a second semi-through groove; after the first bearing assembly and the second bearing assembly are engaged, the first semi-through groove and the second semi-through groove constitute a through-hole for the main shaft to pass through.

6. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 5, characterized in that: The shape of the through-hole is any polygon or irregular cross-section that matches the shape of the main axis cross-section.

7. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 6, characterized in that: The inner wall of the first bearing segment has multiple first weight-reducing holes; the inner wall of the second bearing segment has multiple second weight-reducing holes.

8. The dual sided snap-on plastic bearing for solar photovoltaic tracking racking supports of claim 7, wherein: The aforementioned double-sided snap-fit ​​plastic bearing component is a spherical double-sided snap-fit ​​plastic bearing component.

9. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 7, characterized in that: The double-sided snap-fit ​​plastic bearing component is a cylindrical double-sided snap-fit ​​plastic bearing component.

10. The double-sided snap-fit ​​plastic bearing component for a solar photovoltaic tracking bracket as described in claim 9, characterized in that: The first bearing segment has a first single-sided flange on its end face, which is located at the end of the first bearing segment near the first connecting block. The second bearing segment has a second single-sided flange on its end face, which is located at the end of the second bearing segment near the first connecting block.

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