Injection molding roller bearing retainer

Abstract

The utility model discloses an injection molding roller 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. Protruding parts extending reversely are symmetrically arranged at the ends of the first rolling face and the second rolling face, and the loading body is provided with sand discharging channels communicating with the pockets and the protruding parts. According to the scheme, the retainer is used in cooperation with the steel wire track. The convex part is arranged, the middle part of the loading body is shielded, impurities possibly entering the bearing from the two sides of the bearing are blocked, the sand discharging channel communicating the pocket hole with the convex part is arranged, sand wind at the pocket hole is discharged to the convex part through the sand discharging channel, and the situation that the rolling body located in the pocket hole is damaged due to the fact that the sand wind gathers in the pocket hole is avoided.

Description

Technical Field

[0001] The present application belongs to the field of bearing cages, and specifically relates to an injection molded roller bearing cage. 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 an injection molded roller bearing cage to prevent sand accumulation in cage pockets.

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

[0009] An injection molded roller bearing cage comprises: a cage body, the cage body is provided with a plurality of pockets, rolling bodies are arranged in the pockets, the cage body comprises a plurality of loading bodies, the pockets are arranged 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, the ends of the first rolling surface and the second rolling surface are symmetrically provided with protrusions extending in opposite directions, and the loading body is provided with a sand discharge channel connecting the pockets and the protrusions.

[0010] In a preferred implementation of an injection molded roller bearing cage, the inner wall of the pocket is provided with a first opening, the protruding portion is provided with a second opening, and the first opening is connected to the second opening to form a sand discharge channel.

[0011] In a preferred implementation of an injection molded roller bearing cage, adjacent protrusions are connected and recessed to form a connecting groove, and the connecting grooves of the first rolling surface and the second rolling surface are symmetrically arranged.

[0012] In a preferred implementation of the injection molded roller bearing cage, the second opening is located on a side wall of the connecting groove.

[0013] In a preferred implementation of an injection molded roller bearing cage, a flow guide surface is recessed in the bottom wall of the connecting groove, and the flow guide surface is connected to the end of the connecting groove.

[0014] In a preferred implementation of the injection molded roller bearing cage, the second opening is located at the end surface of the protrusion.

[0015] In a preferred implementation of the injection molded roller bearing cage, the first opening and the second opening are arranged in alignment.

[0016] In a preferred implementation of an injection molded roller bearing cage, the pocket includes a contact portion and a limiting portion, the contact portion abuts against the rolling element, and a clearance gap is provided between the limiting portion and the rolling element.

[0017] In a preferred implementation of an injection molded roller bearing cage, the contact portion is axially symmetrically arranged and the limiting portion is axially symmetrically arranged, and the inner diameter of the limiting portion is smaller than the inner diameter of the contact portion.

[0018] In a preferred implementation of the injection molded roller bearing cage, the first opening is located at the limiting portion.

[0019] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0020] (1) The retainer of the present application is used in conjunction with a wire track. The protrusion is provided to shield the middle part of the bearing body, thereby blocking impurities that may enter the bearing from both sides of the bearing. By providing a sand discharge channel connecting the pocket hole and the protrusion, the sand in the pocket hole is discharged to the protrusion through the sand discharge channel, thereby preventing the sand from gathering in the pocket hole and causing damage to the rolling element in the pocket hole.

[0021] (2) Different forms are provided to guide the wind-blown sand at the pocket hole to the connecting groove for discharge through the connecting groove, or to guide the wind-blown sand to the end surface of the protrusion through the sand discharge channel for direct discharge from the end surface of the protrusion.

[0022] (3) The first opening is arranged at the limiting portion of the pocket, which is more conducive to discharging the wind and sand in the gap. In addition, the first opening can also be arranged at the contact portion, which is conducive to further reducing the contact area between the pocket and the rolling body and reducing friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 This is a schematic diagram of the structure of a retainer in one embodiment of the utility model;

[0025] Figure 2 This is a structural schematic diagram of a sand discharge channel in one embodiment of the utility model;

[0026] Figure 3 for Figure 2 A cross-sectional view of the sand discharge channel at the position shown in ;

[0027] Figure 4 This is a structural schematic diagram of a sand discharge channel in another embodiment of the utility model;

[0028] Figure 5 It is a structural schematic diagram of a sand discharge channel in another embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 1-carrier, 11-pocket hole, 111-first opening, 112-contact portion, 113-limiting portion, 114-avoidance gap, 12-first rolling surface, 13-second rolling surface, 14-protruding portion, 141-connecting groove, 142-second opening, 15-sand discharge channel. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] The present application provides an injection molded roller bearing cage, such as Figures 1 to 5As shown, it includes: a retainer body, the retainer body is provided with a plurality of pockets 11, rolling bodies are arranged in the pockets 11, the retainer body includes a plurality of carriers 1, the pockets 11 are arranged at the center of the carriers 1, the carriers 1 include a first rolling surface 12 facing the inner ring of the bearing and a second rolling surface 13 facing the outer ring of the bearing, the ends of the first rolling surface 12 and the second rolling surface 13 are symmetrically provided with protrusions 14 extending in opposite directions, and the carrier 1 is provided with a sand discharge channel 15 connecting the pockets 11 and the protrusions 14.

[0037] The retainer of the present application is used in conjunction with the wire track. The protrusion 14 is provided to shield the middle part of the carrier 1, and to block impurities that may enter the bearing from both sides of the bearing. By providing a sand discharge channel 15 connecting the pocket 11 and the protrusion 14, the sand at the pocket 11 is discharged to the protrusion 14 through the sand discharge channel 15, so as to prevent the sand from gathering in the pocket 11 and causing damage to the rolling element in the pocket 11.

[0038] In one embodiment, the inner wall of the pocket hole 11 is provided with a first opening 111 , the protruding portion 14 is provided with a second opening 142 , and the first opening 111 is communicated with the second opening 142 to form a sand discharge channel 15 .

[0039] As an example of this implementation:

[0040] Adjacent protrusions 14 are connected and concave to form a connecting groove 141, and the connecting grooves 141 of the first rolling surface 12 and the second rolling surface 13 are symmetrically arranged. This form of directly forming the connecting groove 141 from the original structure avoids the need for component assembly, and the symmetrical structural arrangement is conducive to the overall balance and stability of the cage.

[0041] Furthermore, the second opening 142 is located on the side wall of the connecting groove 141 , which is beneficial for the discharge of wind and sand from the wall surface of the pocket hole 11 opposite to the side wall of the connecting groove 141 .

[0042] Furthermore, a guide surface is concavely provided in the bottom wall of the connecting groove 141, and the guide surface is connected to the end of the connecting groove 141. The guide surface guides the wind and sand in the connecting groove 141 so that it is discharged through the end of the connecting groove 141.

[0043] As another example under this implementation mode:

[0044] The second opening 142 is arranged at the end surface of the protruding portion 14 , which is beneficial for the discharge of wind and sand from the inner wall of the pocket hole 11 opposite to the end surface of the protruding portion 14 .

[0045] This embodiment can be provided with different forms to guide the wind and sand at the pocket 11 to the connecting groove 141 and be discharged through the connecting groove 141, or guide it to the end face of the protrusion 14 through the sand discharge channel 15 and be directly discharged from the end face of the protrusion 14.

[0046] Preferably, in this embodiment, the first opening 111 and the second opening 142 are arranged in a symmetrical manner, so that the sand discharge channel 15 has the shortest distance.

[0047] In one embodiment, the pocket 11 includes a contact portion 112 and a limiting portion 113. The contact portion 112 abuts against the rolling element, and a clearance gap 114 is provided between the limiting portion 113 and the rolling element. The limiting portion 113 does not contact the rolling element, thereby reducing the friction area and the friction force.

[0048] Furthermore, the contact portion 112 is axially symmetrically arranged and the limiting portion 113 is axially symmetrically arranged, and the inner diameter of the limiting portion 113 is smaller than the inner diameter of the contact portion 112. This is beneficial for limiting the rolling body in the pocket 11 to prevent it from falling out of the pocket 11.

[0049] As an example of this embodiment, the first opening 111 is disposed at the limiting portion 113. The limiting portion 113 has a gap, which is conducive to guiding the wind and sand to flow toward the limiting portion 113, and the wind and sand in the gap are discharged through the first opening 111 and the sand discharge channel 15.

[0050] In another embodiment, if Figure 5 As shown, the sand discharge channel 15 connects the pocket hole 11 with the top of the protrusion 14 to form an external channel, and a connecting groove 141 is formed between two adjacent protrusions 14, so that the pocket hole 11 and the connecting groove 141 are connected through the sand discharge channel 15. The parts not described in this application can be realized by adopting or drawing on existing technologies.

[0051] 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.

[0052] 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. An injection molded roller 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, the retainer body comprises a plurality of loading bodies, wherein 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, wherein the ends of the first rolling surface and the second rolling surface are symmetrically provided with protrusions extending in opposite directions, and the loading body is provided with a sand discharge channel connecting the pockets and the protrusions.

2. The injection molded roller bearing cage according to claim 1, characterized in that: The inner wall of the pocket hole is provided with a first opening, the protruding portion is provided with a second opening, and the first opening is communicated with the second opening to form the sand discharge channel.

3. The injection molded roller bearing cage according to claim 2, characterized in that: Adjacent protrusions are connected and recessed to form a connecting groove, and the connecting grooves of the first rolling surface and the second rolling surface are symmetrically arranged.

4. The injection molded roller bearing cage according to claim 3, characterized in that: The second opening is located on a side wall of the connecting groove.

5. The injection molded roller bearing cage according to claim 4, characterized in that: A flow guiding surface is concavely arranged in the bottom wall of the connecting groove, and the flow guiding surface is connected to the end of the connecting groove.

6. The injection molded roller bearing cage according to claim 3, characterized in that: The second opening is located at an end surface of the protruding portion.

7. The injection molded roller bearing cage according to claim 2, characterized in that: The first opening is aligned with the second opening.

8. The injection molded roller bearing cage according to claim 2, characterized in that: The pocket includes a contact portion and a limiting portion, the contact portion abuts against the rolling body, and a clearance gap is provided between the limiting portion and the rolling body.

9. The injection molded roller bearing cage according to claim 8, characterized in that: The contact portion is axially symmetrically arranged and the limiting portion is axially symmetrically arranged, and the inner diameter of the limiting portion is smaller than the inner diameter of the contact portion.

10. An injection molded roller bearing cage according to claim 9, characterized in that: The first opening is located at the limiting portion.

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