Ceramic bearing for miniature heat dissipation device

Abstract

The utility model discloses a ceramic bearing for a miniature heat dissipation device. The ceramic bearing for the miniature heat dissipation device comprises a bearing body, the bearing body is composed of an outer ring, an inner ring and a rolling body, limiting mechanisms are installed on the two sides of the bearing body, each limiting mechanism is composed of a first retainer and a second retainer, a plurality of spacing columns are installed on the end side of the first retainer, and the spacing columns are installed on the end side of the second retainer. A plurality of spacing columns are installed on the end side of the first retainer, cavities are formed in the ends of the spacing columns, a plurality of core clamping columns are installed on the end side of the second retainer, the core clamping columns on the end side of the second retainer are installed in the cavities of the spacing columns of the first retainer in a clamped mode, and the rolling body is limited between the outer ring and the inner ring through the spacing columns of the first retainer. Compared with a traditional mode that a rolling body is limited by a set of retainers, the overall structural stability of the bearing can be remarkably improved through the arrangement of the first retainers and the second retainers, the two sets of retainers and the structural design that the retainers are nested with each other.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramic bearings, in particular to a ceramic bearing for a micro heat dissipation device. Background Art

[0002] Ceramic bearings used for micro heat sinks are bearings made of ceramic materials and are designed specifically for mechanical components in harsh environments such as high speed, high temperature, corrosion, and radiation.

[0003] Existing ceramic bearings used in micro heat sinks typically consist of an inner ring, outer ring, rolling elements, and a cage. The inner ring is the core component of the ceramic bearing and is typically made of high-quality ceramic material. It is responsible for tightly fitting with the shaft and is secured to the shaft through an interference fit or by means of an adapter sleeve or withdrawal sleeve. The outer ring is another important component of the ceramic bearing and is also made of ceramic material. It faces the inner ring and is separated from it by rolling elements and a cage (or a full complement of rolling elements). Together, they bear the load and reduce friction. The rolling elements are the key components in the ceramic bearing responsible for transmitting load and reducing friction. The cage's function is to evenly distribute the rolling elements and prevent them from colliding and wearing each other.

[0004] However, this ceramic bearing has certain defects. One of the main functions of the cage is to evenly distribute the rolling elements to reduce friction and collision between the rolling elements. However, this ceramic bearing usually uses a group of cages to restrict the rolling elements. When running under high load or high speed, a single group of cages will cause some rolling elements to bear excessive load, thereby accelerating their wear and reducing the overall load-bearing capacity of the bearing.

[0005] Therefore, it is necessary to provide a ceramic bearing for a micro heat sink to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the existing technology, the utility model provides a ceramic bearing for a micro heat dissipation device by setting a first retaining frame and a second retaining frame. The overall structural stability of the bearing can be significantly improved through the two sets of retaining frames and their mutually nested structural design.

[0007] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0008] A ceramic bearing for a micro heat sink includes: a bearing body, the bearing body consisting of an outer ring, an inner ring, and rolling elements; a limiting mechanism is installed on both sides of the bearing body; the limiting mechanism consists of a first retaining frame and a second retaining frame; a plurality of spacer columns are installed on the end side of the first retaining frame, and cavities are opened at the ends of the plurality of spacer columns; a plurality of card core columns are installed on the end side of the second retaining frame, and the plurality of card core columns on the end side of the second retaining frame are snap-fitted and installed in the cavities of the spacer columns of the first retaining frame; the rolling elements are limited between the outer ring and the inner ring by the plurality of spacer columns of the first retaining frame.

[0009] Preferably, positioning cavities are provided on both sides of the inner ring, and both the first retaining frame and the second retaining frame are equipped with positioning bolts, and the first retaining frame and the second retaining frame are detachably mounted on both sides of the inner ring through the positioning bolts.

[0010] Preferably, the first retaining frame and the second retaining frame are both provided with a threaded cavity, and the plurality of the spacer columns and the plurality of the core columns are respectively screw-mounted in the threaded cavity through threaded openings formed at the ends.

[0011] Preferably, several of the spacer columns are further wrapped with auxiliary rings, and the auxiliary rings are specifically made of rubber material.

[0012] Preferably, a plurality of through cavities are installed on both the first retaining frame and the second retaining frame.

[0013] Preferably, the plurality of through cavities on the first retaining frame and the second retaining frame are arranged in a ring-centered array.

[0014] Preferably, the first retaining frame and the second retaining frame are provided with blocking surfaces gradually extending along the ring center, and the first retaining frame and the second retaining frame can wrap a plurality of rolling elements between the outer ring and the inner ring through the extended blocking surfaces.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The utility model sets a bearing main body, first carefully places the rolling body into the cavity formed by the outer ring and the inner ring, and during actual assembly, the first retainer and the second retainer in the limiting mechanism cooperate, and the rolling bodies are fixed in the cavity of the outer ring and the inner ring through the spacer columns installed on the end side of the first retainer. The rolling bodies are accurately positioned by the spacer columns, which can reduce the contact between the rolling bodies, thereby reducing friction and wear. At the same time, the card core column on the end side of the second retainer is matched, and the card core column on the end side of the second retainer is embedded in the cavity of the spacer column of the first retainer. Finally, the installation of the first retainer and the second retainer is completed by the cooperation of the positioning bolt. Compared with the traditional method of limiting the rolling body by a group of retainers, the first retainer and the second retainer are set, and the overall structural stability of the bearing can be significantly improved by the two groups of retainers and their mutually nested structural design;

[0017] (2) The present invention provides threaded cavities on both the first and second retainers. During actual assembly, the spacer column and the core column only need to be screwed into the threaded cavities of the first and second retainers, respectively. Compared with the traditional integrated structure, the spiral design allows the retainer to be adjusted or disassembled when necessary, which facilitates maintenance and replacement of damaged parts.

[0018] (3) The utility model provides an auxiliary ring on the spacer column. The auxiliary ring on the spacer column is specifically made of rubber. The auxiliary ring made of rubber can provide a certain elastic support, thereby reducing the metal contact between the rolling element and the retaining frame, which not only reduces the friction coefficient, but also reduces the heat and wear generated by friction, thereby extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a ceramic bearing for a micro heat sink provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the overall split structure provided by the utility model;

[0021] Figure 3 A schematic diagram of the installation structure of the first retainer and the second retainer provided by the utility model;

[0022] Figure 4 This is a schematic diagram of the installation structure of the first retainer and the spacer column provided by the utility model.

[0023] Among them, the names corresponding to the figure marks are: 100, bearing body; 101, outer ring; 102, inner ring; 103, rolling element; 104, positioning cavity; 200, limiting mechanism; 201, first retaining frame; 202, spacer column; 203, threaded opening; 204, auxiliary ring; 205, second retaining frame; 206, stop surface; 207, core column; 208, threaded cavity; 209, through cavity; 300, positioning bolt. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0025] First embodiment:

[0026] like Figure 1-4 As shown, the ceramic bearing for a micro heat dissipation device provided by the present invention includes: a bearing body 100, the bearing body 100 is composed of an outer ring 101, an inner ring 102, and a rolling element 103, and a limiting mechanism 200 is installed on both sides of the bearing body 100. The limiting mechanism 200 is composed of a first retaining frame 201 and a second retaining frame 205. A plurality of spacer columns 202 are installed on the end side of the first retaining frame 201, and a cavity is opened at the end of the plurality of spacer columns 202. A plurality of card core columns 207 are installed on the end side of the second retaining frame 205. The plurality of card core columns 207 on the end side of the second retaining frame 205 are snap-fitted and installed in the cavity of the spacer columns 202 of the first retaining frame 201, and the rolling element 103 is limited between the outer ring 101 and the inner ring 102 by the plurality of spacer columns 202 of the first retaining frame 201. Through the setting of the bearing body 100, the rolling element 103 is first carefully placed in the cavity formed by the outer ring 101 and the inner ring 102. During actual assembly, the limiting mechanism 200 is then The first retainer 201 and the second retainer 205 in the positioning mechanism 200 cooperate with each other, and the rolling elements 103 are fixed in the cavities of the outer ring 101 and the inner ring 102 through the several spacer columns 202 installed on the end side of the first retainer 201. The rolling elements 103 are precisely positioned by the spacer columns 202, which can reduce the contact between the rolling elements 103, thereby reducing friction and wear. At the same time, the card core column 207 on the end side of the second retainer 205 is engaged with the card core column 207 on the end side of the second retainer 205 in the cavity of the spacer column 202 of the first retainer 201. Finally, the installation of the first retainer 201 and the second retainer 205 can be completed by the cooperation of the positioning bolt 300. Compared with the traditional method of restricting the rolling elements 103 by a group of retainers, the overall structural stability of the bearing can be significantly improved by setting the first retainer 201 and the second retainer 205, and the two groups of retainers and their mutually nested structural design.

[0027] Second embodiment:

[0028] like Figure 2-3 As shown, positioning cavities 104 are opened on both sides of the inner ring 102, and the first retainer 201 and the second retainer 205 are both equipped with positioning bolts 300. The first retainer 201 and the second retainer 205 are detachably mounted on both sides of the inner ring 102 through the positioning bolts 300.

[0029] Third embodiment:

[0030] like Figure 2-4 As shown, a threaded cavity 208 is formed on each of the first retainer 201 and the second retainer 205 , and a plurality of spacer columns 202 and a plurality of core columns 207 are screw-mounted in the threaded cavity 208 through threaded openings 203 formed at the ends thereof.

[0031] By providing threaded cavities 208 on both the first retaining frame 201 and the second retaining frame 205, during actual assembly, it is only necessary to spirally install the spacer column 202 and the core column 207 one by one in the threaded cavities 208 of the first retaining frame 201 and the second retaining frame 205 respectively. Compared with the traditional integrated structure setting, the spiral design allows the retaining frame to be adjusted or disassembled when necessary, which facilitates maintenance and replacement of damaged parts.

[0032] Fourth embodiment:

[0033] like Figure 3 As shown, several spacer columns 202 are further wrapped with auxiliary rings 204, and the auxiliary rings 204 are specifically made of rubber.

[0034] By providing the auxiliary ring 204 on the spacer column 202, and by making the auxiliary ring 204 on the spacer column 202 specifically made of rubber material, the auxiliary ring 204 made of rubber material can provide a certain elastic support, thereby reducing the metal contact between the rolling element 103 and the retaining frame, which not only reduces the friction coefficient, but also reduces the heat and wear generated by friction, thereby extending the life of the overall structure.

[0035] Fifth embodiment:

[0036] like Figure 3-4 As shown, a plurality of through cavities 209 are installed on the first retaining frame 201 and the second retaining frame 205 , and the plurality of through cavities 209 on the first retaining frame 201 and the second retaining frame 205 are arranged along a ring-centered array.

[0037] The through cavities 209 arranged in an annular array enhance the overall rigidity of the retaining frame, which can better support the rolling elements 103 and improve the bearing capacity of the bearing. At the same time, the presence of the through cavities 209 helps to dissipate heat under high-speed operation or high-temperature environment.

[0038] Sixth embodiment:

[0039] like Figure 3-4 As shown, the first retainer 201 and the second retainer 205 gradually extend a blocking surface 206 along the ring center. The first retainer 201 and the second retainer 205 can wrap the rolling elements 103 between the outer ring 101 and the inner ring 102 through the extended blocking surface 206 .

[0040] Working principle: During actual assembly, the first retainer 201 and the second retainer 205 in the limiting mechanism 200 cooperate with each other, and the rolling elements 103 are fixed in the cavities of the outer ring 101 and the inner ring 102 through the several spacer columns 202 installed on the end side of the first retainer 201. The rolling elements 103 are precisely positioned by the spacer columns 202, which can reduce the contact between the rolling elements 103, thereby reducing friction and wear. At the same time, the card core column 207 on the end side of the second retainer 205 is cooperated with, and the card core column 207 on the end side of the second retainer 205 is embedded in the cavity of the spacer column 202 of the first retainer 201. Finally, the installation of the first retainer 201 and the second retainer 205 is completed through the cooperation of the positioning bolt 300. Compared with the traditional method of limiting the rolling elements 103 by a group of retainers, the overall structural stability of the bearing can be significantly improved by setting the first retainer 201 and the second retainer 205, through the two groups of retainers and their mutually nested structural design.

[0041] The above embodiment is only one of the preferred implementation methods of the present invention and should not be used to limit the scope of protection of the present invention. Any changes or modifications that have no substantive meaning made to the main design concept and spirit of the present invention, as long as the technical problems they solve are still consistent with the present invention, should be included in the scope of protection of the present invention.

Claims

1. A ceramic bearing for a micro heat sink, characterized in that: include: A bearing body (100) is provided, wherein the bearing body (100) is composed of an outer ring (101), an inner ring (102), and a rolling element (103); a limiting mechanism (200) is installed on both sides of the bearing body (100); the limiting mechanism (200) is composed of a first retaining frame (201) and a second retaining frame (205); a plurality of spacer columns (202) are installed on the end side of the first retaining frame (201); cavities are opened at the ends of the plurality of spacer columns (202); a plurality of core columns (207) are installed on the end side of the second retaining frame (205); the plurality of core columns (207) on the end side of the second retaining frame (205) are snap-fitted and installed in the cavities of the spacer columns (202) of the first retaining frame (201); and the rolling element (103) is limited between the outer ring (101) and the inner ring (102) by the plurality of spacer columns (202) of the first retaining frame (201).

2. The ceramic bearing for a micro heat sink according to claim 1, characterized in that: Positioning cavities (104) are provided on both sides of the inner ring (102); the first retaining frame (201) and the second retaining frame (205) are both equipped with positioning bolts (300); the first retaining frame (201) and the second retaining frame (205) are detachably mounted on both sides of the inner ring (102) via the positioning bolts (300).

3. The ceramic bearing for a micro heat sink according to claim 1, characterized in that: The first retaining frame (201) and the second retaining frame (205) are both provided with a threaded cavity (208), and a plurality of the spacer columns (202) and a plurality of the core columns (207) are respectively screw-mounted in the threaded cavity (208) through threaded openings (203) formed at the ends.

4. The ceramic bearing for a micro heat sink according to claim 3, characterized in that: Auxiliary rings (204) are also wrapped around a number of the spacer columns (202), and the auxiliary rings (204) are specifically made of rubber material.

5. The ceramic bearing for a micro heat sink according to claim 3, characterized in that: A plurality of through cavities (209) are installed on both the first retaining frame (201) and the second retaining frame (205).

6. The ceramic bearing for a micro heat sink according to claim 5, characterized in that: The plurality of through cavities (209) on the first retaining frame (201) and the second retaining frame (205) are arranged in a ring-centered array.

7. The ceramic bearing for a micro heat sink according to claim 6, characterized in that: The first retaining frame (201) and the second retaining frame (205) are gradually extended with a blocking surface (206) according to the ring center. The first retaining frame (201) and the second retaining frame (205) can wrap a plurality of rolling bodies (103) between the outer ring (101) and the inner ring (102) through the extended blocking surface (206).

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