Waterproof bearing

Abstract

The utility model provides a waterproof bearing, which relates to the technical field of bearings and comprises an inner ring, an outer ring, an annular mounting groove, a retainer, a steel ball, an inner-layer sealing structure, an outer-layer sealing structure, an annular supporting block and a shielding fixing ring, according to the device, the left side and the right side of the outer ring surface of the inner ring are sleeved with the inner-layer sealing structures, the left side and the right side of the inner ring surface of the outer ring are sleeved with the outer-layer sealing structures, and the annular supporting blocks are supported between the inner-layer sealing structures and the outer-layer sealing structures, so that the inner-layer sealing structures and the outer-layer sealing structures are prevented from being deformed due to stress; the shielding fixing rings are detachably fixed to the outer side ends of the annular supporting blocks, the shielding fixing rings are used for shielding the outer side ends of the inner ring and the outer ring on the same side, gaps among the inner ring, the outer ring and the annular supporting blocks are sealed and shielded, the better sealing effect is achieved, and water or sundries are prevented from entering the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a waterproof bearing. Background Art

[0002] In the prior art, waterproof bearings generally prevent water, dirt, debris, etc. from entering the bearing by setting a sealing ring between the inner ring and the outer ring. However, due to long-term stress, the sealing ring may be damaged, such as plastic deformation, which greatly reduces the sealing effect of the sealing ring, causing some water or debris to enter the bearing, resulting in reduced internal wear accuracy of the bearing. Utility Model Content

[0003] The purpose of the present utility model is to provide a waterproof bearing, which is equipped with an inner sealing structure on the left and right sides of the outer ring surface of the inner ring, and an outer sealing structure on the left and right sides of the inner ring surface of the outer ring, and is supported between the inner sealing structure and the outer sealing structure by an annular support block to prevent the inner sealing structure and the outer sealing structure from being deformed by force, and a detachable and fixed shielding fixing ring is used at the outer end of the annular support block to shield the outer ends of the inner ring and the outer ring on the same side, thereby sealing and shielding the gap between the inner ring, the outer ring and the annular support block, thereby achieving a better sealing effect and preventing water or debris from entering the interior of the bearing.

[0004] The utility model provides a waterproof bearing, comprising an inner ring and an outer ring distributed coaxially, wherein the outer ring surface of the inner ring and the inner ring surface of the outer ring are both provided with an annular mounting groove, a retaining frame is provided in the middle between the inner ring and the outer ring, steel balls are uniformly rolled in the retaining frame, and the two ends of the steel balls are slidably fitted in the inner and outer annular mounting grooves,

[0005] There are two inner sealing structures, which are respectively assembled on the left and right sides of the outer ring surface of the inner ring;

[0006] There are two outer sealing structures, which are respectively assembled on the left and right sides of the inner ring surface of the outer ring;

[0007] There are two annular support blocks distributed on the left and right sides, the inner ends of the annular support blocks are fixedly assembled on the retaining frame, and the annular support blocks are supported between the inner sealing structure and the outer sealing structure on the same side;

[0008] There are two blocking fixing rings, the inner ends of which are detachably fixedly assembled on the annular support block on the same side;

[0009] The blocking fixing ring blocks the outer ends of the inner ring and the outer ring on the same side.

[0010] As a further optimization solution, in order to seal and shield the gap between the inner ring body and the annular support block, the inner ring includes:

[0011] The inner ring body has an annular slot on the outer edges of the left and right side walls;

[0012] The inner ring surface of the blocking fixing ring is inserted into the annular slot on the same side;

[0013] A first sealing protrusion groove is provided at the outer edge of the annular slot and the inner edge of the annular support block;

[0014] An inner sealing protrusion is fixedly assembled on the inner side surface of the shielding fixing ring corresponding to the first sealing protrusion groove, and the inner sealing protrusion is inserted into the first sealing protrusion groove on the same side.

[0015] As a further optimization solution, in order to seal and shield the gap between the outer ring body and the annular support block, the outer ring includes:

[0016] The outer ring body has a second sealing protrusion groove formed on its inner edge and the outer ring edge of the annular support block;

[0017] An outer sealing protrusion is fixedly assembled on the outer side surface of the shielding fixing ring corresponding to the second sealing protrusion groove, and the outer sealing protrusion is inserted into the second sealing protrusion groove on the same side.

[0018] As a further optimization solution, in order to seal the outer surface of the inner ring and the inner surface of the outer ring to achieve waterproofing, the inner sealing structure and the outer sealing structure have the same structure, and the outer sealing structure includes:

[0019] A sealing ring, which is sleeved on the edge of the inner ring surface of the outer ring;

[0020] The outer ring surface of the sealing ring is integrally formed with an annular protrusion;

[0021] A third sealing protrusion groove is formed on the inner ring surface of the outer ring corresponding to the annular protrusion, and the annular protrusion is inserted into the third sealing protrusion groove.

[0022] As a further optimization solution, in order to support the inner and outer sealing structures and to allow the annular support block to slightly deform under the extrusion of the annular plug to better support the inner and outer sealing structures, an annular groove is coaxially provided on the outer side of the annular support block, and the cross-section of the annular groove is trapezoidal on one side;

[0023] An annular plug with a matching cross-sectional shape is inserted into the annular groove;

[0024] The inner end of the shielding fixing ring passes through the annular plug block on the same side and is detachably fixedly assembled on the annular supporting block.

[0025] As a further optimization solution, in order to fix the annular plug in the annular groove of the annular support block, the annular support block is slightly deformed to better support the inner and outer sealing structures and to provide sealing shielding for the edges of the inner and outer rings, the shielding fixing ring includes:

[0026] The annular baffle has fixing bolts uniformly extending through its outer wall, and the fixing bolts penetrate the annular plug and are screwed to the bottom surface of the annular groove;

[0027] The annular baffle blocks the outer ends of the inner ring and the outer ring on the same side.

[0028] As a further optimization solution, in order to prevent the nut of the fixing bolt from protruding from the outer wall of the annular baffle, a receiving groove is provided on the outer wall of the annular baffle corresponding to the nut of the fixing bolt, and the nut of the fixing bolt is inserted into the receiving groove.

[0029] As a further optimization solution, in order to better seal the edges of the inner and outer rings and ensure the sealing effect, a rubber layer is pasted and fixed to the inner side of the annular baffle, and the rubber layer covers the outer ends of the inner and outer rings on the same side.

[0030] As a further optimization solution, in order to facilitate the replenishment of lubricating oil into the bearing, the outer wall of the outer ring is equipped with an oil injection structure, and the inner end of the oil injection structure is connected to the outer annular mounting groove.

[0031] As a further optimization solution, in order to more conveniently add lubricating oil to the bearing, the oil injection structure includes:

[0032] An oil filling hole is provided on the outer wall of the outer ring, and an inner end of the oil filling hole is connected to the outer annular mounting groove;

[0033] a hidden groove formed at the outer end of the oil filling hole;

[0034] An oil filling nozzle is fixedly assembled in the oil filling hole, and the outer end of the oil filling nozzle is located in the hidden groove.

[0035] The present invention provides a waterproof bearing through improvement, which has the following improvements and advantages compared with the prior art:

[0036] The device is sleeved with the inner sealing structure on the left and right sides of the outer ring surface of the inner ring, and the outer sealing structure is sleeved on the left and right sides of the inner ring surface of the outer ring. It is supported between the inner sealing structure and the outer sealing structure by the annular support block to prevent the inner sealing structure and the outer sealing structure from being deformed by force. A detachable fixed shielding ring is used at the outer end of the annular support block to shield the outer ends of the inner ring and outer ring on the same side, thereby sealing and shielding the gap between the inner ring, outer ring and the annular support block, thereby achieving a better sealing effect and preventing water or debris from entering the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is a schematic diagram of the structure of the utility model;

[0039] Figure 2 It is a schematic cross-sectional view of the structure of the utility model;

[0040] Figure 3 It is a schematic cross-sectional view of the local structure of the utility model;

[0041] Figure 4 This is a schematic diagram of the inner ring structure of the utility model;

[0042] Figure 5 This is a schematic diagram of the outer ring structure of the utility model;

[0043] Figure 6 This is a schematic structural diagram of the annular baffle and annular plug block of the present utility model.

[0044] Description of reference numerals:

[0045] 1-inner ring, 11-inner ring body, 12-annular slot, 13-first sealing protrusion groove, 2-outer ring, 21-outer ring body, 22-second sealing protrusion groove, 3-retaining frame, 4-annular mounting groove, 5-steel ball, 6-inner sealing structure, 7-outer sealing structure, 71-sealing ring, 72-annular protrusion, 73-third sealing protrusion groove, 8-annular support block, 81-annular groove, 82-annular plug, 9-shielding fixing ring, 91-annular baffle, 92-rubber layer, 93-outer sealing protrusion, 94-storage groove, 95-fixing bolt, 96-inner sealing protrusion, 10-oil filling structure, 101-hidden groove, 102-oil filling nozzle, 103-oil filling hole. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0048] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0049] See also Figure 1-6 The utility model provides a technical solution: a waterproof bearing, comprising an inner ring 1 and an outer ring 2 distributed coaxially, an annular mounting groove 4 is provided on the outer ring surface of the inner ring 1 and the inner ring surface of the outer ring 2, a retainer 3 is provided in the middle between the inner ring 1 and the outer ring 2, steel balls 5 are uniformly rolled in the retainer 3, and the two ends of the steel balls 5 slide and fit in the inner and outer annular mounting grooves 4, and the inner ring 1 and the outer ring 2 rotate relative to each other through the steel balls 5 on the retainer 3,

[0050] There are two inner sealing structures 6, which are respectively assembled on the left and right sides of the outer ring surface of the inner ring 1 to seal the outer ring surface of the inner ring 1;

[0051] There are two outer sealing structures 7, which are respectively assembled on the left and right sides of the inner ring surface of the outer ring 2 to seal the inner ring surface of the outer ring 2;

[0052] There are two annular support blocks 8 on the left and right sides. The inner ends of the annular support blocks 8 are fixedly assembled on the retaining frame 3, and the annular support blocks 8 are supported between the inner sealing structure 6 and the outer sealing structure 7 on the same side. The annular support blocks 8 support the inner sealing structure 6 and the outer sealing structure 7 on the same side to prevent the inner sealing structure 6 and the outer sealing structure 7 from being deformed by force;

[0053] There are two blocking fixing rings 9, the inner ends of which are detachably fixedly assembled on the annular support block 8 on the same side;

[0054] The shielding fixing ring 9 shields the outer ends of the inner ring 1 and the outer ring 2 on the same side. The shielding fixing ring 9 is used to shield the outer ends of the inner ring 1 and the outer ring 2 on the same side, and the gap between the inner ring 1, the outer ring 2 and the annular support block 8 is sealed to achieve a better sealing effect and prevent water or debris from entering the interior of the bearing.

[0055] In some embodiments, in order to seal the gap between the inner ring body 11 and the annular support block 8, the inner ring 1 includes:

[0056] The inner ring body 11 has an annular slot 12 formed on the outer edges of the left and right side walls;

[0057] The inner ring surface of the shielding fixing ring 9 is inserted into the annular slot 12 on the same side;

[0058] A first sealing protrusion groove 13 is formed at the outer edge of the annular slot 12 and the inner edge of the annular support block 8;

[0059] The inner side surface of the shielding fixing ring 9 corresponds to the first sealing protrusion groove 13 and is fixedly assembled with an inner sealing protrusion 96, and the inner sealing protrusion 96 is inserted into the first sealing protrusion groove 13 on the same side, and the inner sealing protrusion 96 blocks the outside of the gap between the outer edge of the inner ring body 11 and the annular support block 8.

[0060] In some embodiments, in order to seal the gap between the outer ring body 21 and the annular support block 8, the outer ring 2 includes:

[0061] The outer ring body 21 has a second sealing protrusion groove 22 formed at its inner edge and the outer ring edge of the annular support block 8;

[0062] The outer side surface of the shielding fixing ring 9 is fixedly equipped with an outer sealing protrusion 93 corresponding to the second sealing protrusion groove 22. The outer sealing protrusion 93 is inserted into the second sealing protrusion groove 22 on the same side. The outer sealing protrusion 93 blocks the outside of the gap between the inner edge of the outer ring body 21 and the annular support block 8.

[0063] In some embodiments, in order to seal the outer ring surface of the inner ring 1 and the inner ring surface of the outer ring 2 to achieve waterproofing, the inner sealing structure 6 and the outer sealing structure 7 have the same structure. The outer sealing structure 7 includes:

[0064] The sealing ring 71 is sleeved on the edge of the inner ring surface of the outer ring 2;

[0065] The outer ring surface of the sealing ring 71 is integrally formed with an annular protrusion 72;

[0066] A third sealing protrusion groove 73 is formed on the inner ring surface of the outer ring 2 corresponding to the annular protrusion 72 . The annular protrusion 72 is inserted into the third sealing protrusion groove 73 . This design further enhances the sealing effect.

[0067] In some embodiments, in order to support the inner sealing structure 6 and the outer sealing structure 7 and to allow the annular support block 8 to slightly deform under the extrusion of the annular plug 82 to better support the inner sealing structure 6 and the outer sealing structure 7, an annular groove 81 is coaxially provided on the outer side of the annular support block 8, and the cross-section of the annular groove 81 is trapezoidal on one side;

[0068] An annular plug 82 with a matching cross-sectional shape is inserted into the annular groove 81;

[0069] The inner end of the shielding fixing ring 9 passes through the annular plug 82 on the same side and is detachably fixed to the annular support block 8. The annular plug 82 is inserted into the annular groove 81 of the annular support block 8 under the extrusion of the shielding fixing ring 9. The annular support block 8 is made of spring steel and undergoes slight deformation after being squeezed.

[0070] In some embodiments, in order to fix the annular plug 82 in the annular groove 81 of the annular support block 8, so that the annular support block 8 is slightly deformed to better support the inner sealing structure 6 and the outer sealing structure 7, and to seal and shield the edges of the inner ring 1 and the outer ring 2, the shielding fixing ring 9 includes:

[0071] The annular baffle 91 has a fixing bolt 95 uniformly extending through its outer wall. The fixing bolt 95 passes through the annular plug 82 and is screwed to the bottom surface of the annular groove 81.

[0072] The annular baffle 91 blocks the outer ends of the inner ring 1 and the outer ring 2 on the same side.

[0073] In some embodiments, in order to prevent the nut of the fixing bolt 95 from protruding from the outer wall of the annular baffle 91, a receiving groove 94 is opened on the outer wall of the annular baffle 91 corresponding to the nut of the fixing bolt 95, and the nut of the fixing bolt 95 is inserted into the receiving groove 94.

[0074] In some embodiments, in order to better seal the edges of the inner ring 1 and the outer ring 2 and ensure the sealing effect, a rubber layer 92 is adhered and fixed to the inner side of the annular baffle 91, and the rubber layer 92 covers the outer ends of the inner ring 1 and the outer ring 2 on the same side.

[0075] In some embodiments, in order to facilitate the replenishment of lubricating oil into the bearing, the outer wall of the outer ring 2 is equipped with an oil injection structure 10, and the inner end of the oil injection structure 10 is connected to the outer annular mounting groove 4.

[0076] In some embodiments, in order to more conveniently add lubricating oil to the bearing, the oil injection structure 10 includes:

[0077] An oil filling hole 103 is provided on the outer wall of the outer ring 2, and the inner end of the oil filling hole 103 is connected to the outer annular mounting groove 4;

[0078] A hidden groove 101 is provided at the outer end of the oil filling hole 103;

[0079] An oiling nozzle 102 is fixedly installed in the oiling hole 103 , and the outer end of the oiling nozzle 102 is located in the hidden groove 101 . Lubricating oil is injected into the oiling hole 103 through the oiling nozzle 102 , and the lubricating oil flows along the oiling hole 103 into the outer annular mounting groove 4 .

[0080] Working principle:

[0081] The two inner sealing structures 6 are respectively assembled on the left and right sides of the outer ring surface of the inner ring 1 to seal the outer ring surface of the inner ring 1. The two outer sealing structures 7 are respectively assembled on the left and right sides of the inner ring surface of the outer ring 2 to seal the inner ring surface of the outer ring 2. The inner end of the annular support block 8 is fixedly assembled on the retaining frame 3, and the annular support block 8 is supported between the inner sealing structure 6 and the outer sealing structure 7 on the same side. The annular support block 8 supports the inner sealing structure 6 and the outer sealing structure 7 on the same side to prevent the inner sealing structure 6 and the outer sealing structure 7 from being deformed by force.

[0082] The inner end of the shielding fixing ring 9 can be detachably fixedly assembled on the annular support block 8 on the same side. The shielding fixing ring 9 is used to shield the outer ends of the inner ring 1 and the outer ring 2 on the same side, and seal the gap between the inner ring 1, the outer ring 2 and the annular support block 8, thereby achieving a better sealing effect and preventing water or debris from entering the bearing.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A waterproof bearing, comprising an inner ring (1) and an outer ring (2) coaxially distributed, wherein the outer ring surface of the inner ring (1) and the inner ring surface of the outer ring (2) are both provided with an annular mounting groove (4), a retaining frame (3) is provided in the middle between the inner ring (1) and the outer ring (2), steel balls (5) are uniformly rolled in the retaining frame (3), and the two ends of the steel balls (5) are slidably fitted in the inner and outer annular mounting grooves (4), characterized in that: There are two inner sealing structures (6), which are respectively assembled on the left and right sides of the outer ring surface of the inner ring (1); There are two outer sealing structures (7), and the two outer sealing structures (7) are respectively assembled on the left and right sides of the inner ring surface of the outer ring (2); annular support blocks (8), two of which are distributed on the left and right sides, wherein the inner ends of the annular support blocks (8) are fixedly assembled on the retaining frame (3), and the annular support blocks (8) are supported between the inner sealing structure (6) and the outer sealing structure (7) on the same side; There are two shielding fixing rings (9), the inner ends of the shielding fixing rings (9) are detachably fixedly assembled on the annular support block (8) on the same side; The shielding fixing ring (9) shields the outer ends of the inner ring (1) and the outer ring (2) on the same side.

2. A waterproof bearing according to claim 1, characterized in that: The inner ring (1) comprises: The inner ring body (11) has an annular slot (12) formed at the outer edges of the left and right side walls; The inner ring surface of the blocking fixing ring (9) is inserted into the annular slot (12) on the same side; A first sealing protrusion groove (13) is provided at the outer edge of the annular slot (12) and the inner edge of the annular support block (8); An inner sealing protrusion (96) is fixedly mounted on the inner side surface of the shielding fixing ring (9) corresponding to the first sealing protrusion groove (13), and the inner sealing protrusion (96) is inserted into the first sealing protrusion groove (13) on the same side.

3. The waterproof bearing according to claim 1, characterized in that: The outer ring (2) comprises: The outer ring body (21) has a second sealing protrusion groove (22) formed at its inner edge and the outer ring surface edge of the annular support block (8); An outer sealing protrusion (93) is fixedly mounted on the outer side surface of the shielding fixing ring (9) corresponding to the second sealing protrusion groove (22), and the outer sealing protrusion (93) is inserted into the second sealing protrusion groove (22) on the same side.

4. A waterproof bearing according to claim 1, characterized in that: The inner sealing structure (6) and the outer sealing structure (7) have the same structure, and the outer sealing structure (7) comprises: A sealing ring (71) is sleeved on the edge of the inner ring surface of the outer ring (2); The outer ring surface of the sealing ring (71) is integrally formed with an annular protrusion (72); A third sealing protrusion groove (73) is provided on the inner ring surface of the outer ring (2) corresponding to the annular protrusion (72), and the annular protrusion (72) is inserted into the third sealing protrusion groove (73).

5. The waterproof bearing according to claim 1, characterized in that: An annular groove (81) is provided on the outer side surface of the annular support block (8) coaxially, and the cross section of the annular groove (81) is trapezoidal on one side; An annular plug (82) having a matching cross-sectional shape is inserted into the annular groove (81); The inner end of the shielding fixing ring (9) passes through the annular plug block (82) on the same side and is detachably fixedly assembled on the annular support block (8).

6. The waterproof bearing according to claim 1, characterized in that: The shielding fixing ring (9) comprises: The annular baffle (91) has a fixing bolt (95) uniformly passing through the outer wall thereof. The fixing bolt (95) passes through the annular plug (82) and is screwed to the bottom surface of the annular groove (81); The annular baffle (91) blocks the outer ends of the inner ring (1) and the outer ring (2) on the same side.

7. A waterproof bearing according to claim 6, characterized in that: The outer wall of the annular baffle (91) is provided with a receiving groove (94) corresponding to the nut of the fixing bolt (95), and the nut of the fixing bolt (95) is inserted into the receiving groove (94).

8. The waterproof bearing according to claim 6, characterized in that: A rubber layer (92) is adhered and fixed to the inner side surface of the annular baffle (91), and the rubber layer (92) covers the outer ends of the inner ring (1) and the outer ring (2) on the same side.

9. The waterproof bearing according to claim 1, characterized in that: The outer wall of the outer ring (2) is equipped with an oil injection structure (10), and the inner end of the oil injection structure (10) is connected to the outer annular mounting groove (4).

10. The waterproof bearing according to claim 9, characterized in that: The oil injection structure (10) comprises: An oil filling hole (103) is provided on the outer wall of the outer ring (2), and the inner end of the oil filling hole (103) is connected to the outer annular mounting groove (4); A hidden groove (101) is provided at the outer end of the oil filling hole (103); An oiling nozzle (102) is fixedly mounted in the oiling hole (103), and the outer end of the oiling nozzle (102) is located in the hidden groove (101).

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