Sand-proof injection molding bearing retainer

Abstract

The utility model discloses a sand-proof injection-molded bearing retainer which comprises a retainer body, a plurality of pockets are formed in the retainer body, rolling bodies are arranged in the pockets, the retainer body comprises a plurality of loading bodies, the pockets are formed in the centers of the loading bodies, and each loading body comprises a first rolling face facing a bearing inner ring and a second rolling face facing a bearing outer ring. Connecting grooves are formed between the adjacent first rolling faces and the adjacent second rolling faces respectively, and the loading body comprises guide inclined faces located at the two ends of the retainer body. Impurities such as quicksand are guided by arranging the guide inclined surfaces, and sand wind is guided to the position far away from the pocket holes and prevented from entering the pocket holes to affect movement of the rolling bodies. And the guide inclined surfaces have the effects of blocking and guiding sand entering from the end part direction of the retainer to flow out.

Description

Technical Field

[0001] The present application belongs to the field of bearing retainers, and specifically relates to a sand-proof injection-molded bearing retainer. Background Art

[0002] As one of the representatives of clean energy, photovoltaic power generation provides endless enjoyment for human green life. Every day as the sun rises, the current converted from solar energy can directly drive washing machines, refrigerators, radios, computers, etc. to work; hot water boiled by solar energy continuously supplies bathrooms and kitchens; if it is rainy, people can use the solar energy stored in the accumulator.

[0003] The current development trend of solar power generation is to use automatic tracking photovoltaic power generation equipment. The various solar panels of this equipment can keep pace with the movement of the sun. Compared with traditional fixed solar photovoltaic power generation equipment that can only generate maximum power for two hours a day, automatic tracking solar panel modules can significantly provide more energy from sunlight radiation.

[0004] In solar power generation equipment, since the adjustment motor movement of the solar power generation equipment has always been in accordance with the same mechanical principle, the motor adjusts the solar panel module to accurately reach each tracking position. The rolling ball bearing ensures the minimum resistance in the tracking movement. In addition, each solar panel module of a set of solar power generation equipment must follow the movement, and many rolling bearings need to be installed and used. The use of rolling bearings is almost irreplaceable.

[0005] According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. Cage (i.e. bearing cage, also known as bearing retainer) refers to the bearing part that partially wraps all or part of the rolling elements and moves with them, used to isolate the rolling elements, and usually guides the rolling elements and keeps them in the bearing. Therefore, the cage is a very important component of the bearing, and the structure of the cage directly affects the rotation of the rolling elements, affecting the use effect and service life of the bearing.

[0006] And because solar panels are set up in outdoor environments, the pain points of photovoltaic systems in the industry are currently concentrated on the instability of photovoltaic systems under strong wind conditions. On the one hand, due to the large area of ​​photovoltaic modules under strong wind conditions, photovoltaic modules need to withstand large wind loads. When the wind load is transmitted to the photovoltaic bracket, it exerts a large force on the photovoltaic bracket, which poses a great test to the structural stability. On the other hand, outdoor wind and sand accidentally fall into the retaining frame, and due to the special low speed of photovoltaic bearings, jamming and other phenomena may occur, affecting the normal use of bearings and photovoltaic panels. Utility Model Content

[0007] The present application provides a sand-proof injection-molded bearing retainer to prevent wind-blown sand from entering the retainer.

[0008] The technical solution adopted in this application is:

[0009] A sand-proof injection-molded bearing retainer comprises: a retainer body, wherein the retainer body is provided with a plurality of pockets, rolling bodies are provided in the pockets, the retainer body comprises a plurality of loading bodies, the pockets are provided at the center of the loading bodies, the loading bodies comprise a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, connecting grooves are provided between adjacent first rolling surfaces and adjacent second rolling surfaces respectively, and the loading bodies comprise guiding inclined surfaces located at both ends of the retainer body.

[0010] In a preferred implementation of a sand-proof injection-molded bearing retainer, the first rolling surface and the second rolling surface are symmetrically arranged, and both ends of the first rolling surface and the second rolling surface are inclined toward the center to form guide inclined surfaces respectively, and the symmetry center of the first rolling surface and the second rolling surface is the lowest point of the guide inclined surface.

[0011] In a preferred implementation of a sand-proof injection-molded bearing retainer, the first rolling surface and the second rolling surface are integrally formed, and an end portion of the first rolling surface is inclined toward an end portion of the second rolling surface to form a guide slope.

[0012] In a preferred implementation of a sand-proof injection-molded bearing retainer, a side wall of the carrier is provided with protrusions, and connecting grooves are formed between adjacent protrusions.

[0013] In a preferred implementation of a sand-proof injection-molded bearing retainer, the connecting groove is provided with a sand-passing hole, and the guiding inclined surface is provided with a sand-discharging port connected to the sand-passing hole.

[0014] In a preferred implementation of a sand-proof injection-molded bearing retainer, the sand-passing hole is located on the inner side wall of the connecting groove, and the protruding portion is provided with a sand-discharging channel connecting the sand-passing hole and the sand-discharging port.

[0015] In a preferred implementation of a sand-proof injection-molded bearing retainer, the sand-passing hole is located at the end of the connecting groove, and the sand-passing hole extends along the guiding inclined surface to form a sand-discharging channel connected to the sand-discharging port.

[0016] In a preferred implementation of a sand-proof injection-molded bearing retainer, the guide slope includes an inclined section close to the connecting grooves on both sides and a concave section located in the middle section of the guide slope, and the retainer width gradually decreases from the inclined section to the concave section.

[0017] In a preferred implementation of the sand-proof injection-molded bearing retainer, the guide slope is connected to any adjacent connecting groove.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0019] (1) By setting a guide slope to guide impurities such as quicksand, the sand is directed to a position away from the pocket to prevent it from entering the pocket and affecting the movement of the rolling element.

[0020] (2) Since the inner concave part of the connecting groove is easy to store impurities such as quicksand, the impurities enter the sand discharge channel through the sand hole and are then discharged through the sand discharge port, preventing them from entering the pocket hole.

[0021] (3) By setting the guide slope to be connected to any connected connection groove, that is, the guide slope is only connected to one adjacent connection groove, it is prevented that the wind and sand move back and forth between the adjacent connection grooves through the guide slope, thereby achieving the one-way guiding effect of the guide slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of a retainer in one embodiment of the utility model;

[0024] Figure 2 This is a structural schematic diagram of a connecting groove in an embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the guide slope in one embodiment of the utility model;

[0026] Figure 4 It is a cross-sectional view of the connection between the sand passing hole and the sand discharge port in one embodiment of the utility model;

[0027] Figure 5 This is another structural schematic diagram of the guiding inclined surface in one embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 1-carrier, 11-pocket hole, 12-first rolling surface, 13-second rolling surface, 14-connecting groove, 141-sand passing hole, 15-guide inclined surface, 151-sand discharge port, 152-inclined section, 153-concave section, 16-protruding portion, 17-sand discharge channel. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0032] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0035] The present application provides a sand-proof injection-molded bearing cage, such as Figures 1 to 5As shown, it includes: a cage body, and the cage body is provided with a plurality of pockets 12, and rolling bodies are arranged in the pockets 12. The cage body includes a plurality of carriers 11, and the pockets 12 are arranged at the center of the carriers 11. The carriers 11 include a first rolling surface 13 facing the inner ring of the bearing and a second rolling surface 14 facing the outer ring of the bearing. Connecting grooves 141 are respectively arranged between adjacent first rolling surfaces 13 and adjacent second rolling surfaces 14. The carrier 11 includes guide slopes 15 located at both ends of the cage body. By setting the guide slopes 15, impurities such as quicksand are guided to a position away from the pockets 12 to prevent them from entering the pockets 12 and affecting the movement of the rolling bodies.

[0036] In addition, it can be understood that the position of the guide slope 15 described in the present application refers to the two ends of the adjacent carriers 11 that are not in contact. Therefore, the guide slope 15 has the effect of blocking and guiding the sand entering from the end of the retainer.

[0037] In one embodiment, the first rolling surface 13 and the second rolling surface 14 are symmetrically arranged, and the two ends of the first rolling surface 13 and the second rolling surface 14 are inclined toward the center to form guide slopes 15 respectively, and the symmetry center of the first rolling surface 13 and the second rolling surface 14 is the lowest point of the guide slopes 15. In this way, the end of the carrier 11 presents a shape with a low center and high ends, guiding the quicksand to flow to the center of the guide slope 15. Since the guide slope 15 is located at the outer end of the retainer and does not contact other surfaces, the wind and sand located on the first rolling surface 13 and the second rolling surface 14 are guided to flow and fall along the guide slope 15, and the quicksand is prevented from flowing to one side along the guide slope 15 and falling into the connecting groove 141.

[0038] In one embodiment, the first rolling surface 13 and the second rolling surface 14 are integrally formed, and the end of the first rolling surface 13 is inclined toward the end of the second rolling surface 14 to form a guide slope 15. The integral forming method can improve the overall stability of the cage, and the end of the first rolling surface 13 is inclined toward the end of the second rolling surface 14 to prevent wind and sand from entering the side of the inner ring close to the shaft, so that the wind and sand are discharged from the outer ring along the guide slope 15.

[0039] In one embodiment, the side wall of the loading body 11 is provided with protrusions 16, and connecting grooves 141 are formed between adjacent protrusions 16. Adjacent protrusions 16 shield the pockets 12 to prevent wind and sand from entering the pockets 12 from between two adjacent loading bodies 11.

[0040] Furthermore, the connecting groove 141 is provided with a sand hole 141, and the guiding slope 15 is provided with a sand outlet 151 connected to the sand hole 141. This arrangement enables the wind and sand in the connecting groove 141 to enter the sand outlet 151 through the sand hole 141 and then be discharged through the guiding slope 15.

[0041] In addition, at certain angles of the retaining frame, wind and sand may enter the sand hole 141 from the sand discharge port 151 and fall into the connecting groove 141. On the one hand, if the wind and sand particles move along the connecting groove 141 to the end of the connecting groove 141, they can also be discharged through the end opening. On the other hand, it can prevent the wind and sand from entering the pocket 12 when the wind force is strong at the guide slope 15, but instead be stored in the connecting groove 141, and the blocking of the protrusion 16 can prevent the wind and sand in the connecting groove 141 from entering the pocket 12.

[0042] Furthermore, the sand passing hole 141 is located at the inner side wall of the connecting groove 141 , and the protruding portion 16 is provided with a sand discharge channel 17 connecting the sand passing hole 141 and the sand discharge port 151 .

[0043] In another embodiment, if Figure 2 , Figure 4 As shown, the sand hole 141 is located at the end of the connecting groove 141, and the sand hole 141 extends along the guide slope 15 to form a sand discharge channel 17 connected to the sand discharge port 151. Both of the above two methods can achieve the connection of the sand discharge channel 17.

[0044] Preferably, the guide slope 15 is connected to any adjacent connection groove 141. By setting the guide slope 15 to be connected to any connected connection groove 141, that is, the guide slope 15 is only connected to one adjacent connection groove 141, it is prevented that the wind and sand move back and forth between the adjacent connection grooves 141 through the guide slope 15, thereby achieving the one-way guiding effect of the guide slope 15.

[0045] In one embodiment, Figure 3 , Figure 5 As shown, the guide slope 15 includes an inclined section 152 close to the connecting grooves 141 on both sides and a concave section 153 located in the middle of the guide slope 15, and the width of the retainer gradually decreases from the inclined section 152 to the concave section 153. This mode is that the guide slope 15 is a structural form with a low middle and high sides. Since the guide slope 15 is located at the end, this setting is conducive to guiding the wind and sand to flow to the center of the guide slope 15 and then discharged.

[0046] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0047] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0048] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A sand-proof injection-molded bearing cage, characterized in that: include: A retainer body, wherein the retainer body is provided with a plurality of pockets, wherein rolling bodies are provided in the pockets, wherein the retainer body comprises a plurality of loading bodies, wherein the pockets are provided at the center of the loading bodies, wherein the loading bodies comprise a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, wherein connecting grooves are respectively provided between adjacent first rolling surfaces and adjacent second rolling surfaces, and wherein the loading bodies comprise guiding inclined surfaces located at both ends of the retainer body.

2. The anti-sand injection-molded bearing cage according to claim 1, characterized in that: The first rolling surface is symmetrically arranged with respect to the second rolling surface, and both ends of the first rolling surface and the second rolling surface are inclined toward the center to form the guiding inclined surfaces respectively, and the symmetry center of the first rolling surface and the second rolling surface is the lowest point of the guiding inclined surfaces.

3. The anti-sand injection-molded bearing cage according to claim 1, characterized in that: The first rolling surface and the second rolling surface are integrally formed, and an end portion of the first rolling surface is inclined toward an end portion of the second rolling surface to form the guiding inclined surface.

4. The anti-sand injection-molded bearing cage according to claim 1, characterized in that: The side wall of the loading body is provided with protrusions, and the connecting grooves are formed between adjacent protrusions.

5. The anti-sand injection-molded bearing cage according to claim 4, characterized in that: The connecting groove is provided with a sand passing hole, and the guiding inclined surface is provided with a sand discharge port communicated with the sand passing hole.

6. The anti-sand injection-molded bearing cage according to claim 5, characterized in that: The sand-passing hole is located on the inner side wall of the connecting groove, and the protruding portion is provided with a sand-discharging channel connecting the sand-passing hole and the sand-discharging port.

7. The anti-sand injection-molded bearing cage according to claim 5, characterized in that: The sand-passing hole is located at the end of the connecting groove, and the sand-passing hole extends along the guiding inclined surface to form a sand-discharging channel communicating with the sand-discharging port.

8. The anti-sand injection-molded bearing cage according to claim 4, characterized in that: The guiding inclined surface comprises inclined sections close to the connecting grooves on both sides and a concave section located in the middle section of the guiding inclined surface, and the width of the retaining frame gradually decreases from the inclined section to the concave section.

9. The anti-sand injection-molded bearing cage according to claim 4, characterized in that: The guiding inclined surface is communicated with any adjacent connecting groove.

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