Ball bearing sealing structure

Abstract

The utility model relates to a ball bearing sealing structure which comprises a bearing outer ring, a bearing inner ring arranged in the bearing outer ring, and a plurality of bearing balls arranged between the bearing inner ring and the bearing outer ring in a sliding manner; and embedding grooves are formed in the two sides of the inner wall of the bearing outer ring and the two sides of the outer wall of the bearing inner ring. The utility model relates to the technical field of ball bearing sealing structures. According to the ball bearing sealing structure, the side walls of the dust covers are provided with the through holes, and the through holes are communicated with the cavity formed among the bearing outer ring, the bearing inner ring and the two dust covers, so that when a lubricant is added into the ball bearing, the lubricant is squeezed into the through holes, and the lubricant is convenient to add; therefore, the lubricant can be prevented from being added under the condition that the dustproof cover is dismounted, the purpose of protecting the dustproof cover is achieved, and the problem that the subsequent use is affected due to deformation of the dustproof cover in the dismounting process is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ball bearing sealing structure, and especially to a ball bearing sealing structure. BACKGROUND

[0002] Ball bearing is a type of rolling element bearing that uses balls for the rolling elements between the bearing races, the purpose of ball bearing is to reduce rotational friction and support radial and axial loads.

[0003] In order to prevent the dust from outside into the bearing interior, the dust cover is generally provided on the outer side of the bearing, and the ball bearing needs to supplement the lubricating oil in the interior after being used for a period of time, but in the prior art, the dust cover is generally provided in a sheet-shaped integral mode, so that the dust cover needs to be disassembled when adding the lubricating oil, but the dust cover will inevitably be deformed after being disassembled, and then the sealing performance is reduced. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a ball bearing sealing structure to solve the technical problems mentioned in the background.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A ball bearing sealing structure comprises:

[0007] A bearing outer ring, an inner bearing ring is arranged in the bearing outer ring, and a plurality of bearing balls are arranged between the bearing outer ring and the inner bearing ring and slide together;

[0008] The inner wall of the bearing outer ring and the outer wall of the inner bearing ring are both provided with an embedding groove;

[0009] A dust cover is arranged in the two embedding grooves corresponding to the bearing outer ring and the inner bearing ring, and is rotatably connected with the bearing outer ring and the inner bearing ring, a through hole is arranged in the dust cover, and a sealing assembly is arranged at the position corresponding to the through hole.

[0010] Further, the inner ring and the outer ring of the dust cover are both provided with a flange, and the inner groove wall of the embedding groove is provided with an extension cavity matched with the flange.

[0011] Further, a plurality of sliding balls are embedded in the outer surface of the flange, and the sliding balls are rotatably connected with the flange.

[0012] Further, the sealing assembly comprises a sliding rail fixedly arranged on the outer surface of the dust cover, the center of the sliding rail corresponds to the position of the through hole, a baffle is slidably arranged in the sliding rail, and a closing plug assembly is arranged at the position corresponding to the through hole.

[0013] Further, the closing plug assembly comprises a sliding hole, which is arranged in the inner part of the baffle and corresponds to the position of the through hole, and a closing plug is slidably arranged in the inner part of the sliding hole, and a conical spring is fixedly connected to the top end of the closing plug.

[0014] Further, the end of the sliding rail is provided with a closed end, and guide grooves are arranged in the inner part of the sliding rail on both sides, and a positioning strip is slidably arranged in the inner part of the guide grooves, and the positioning strip is fixedly connected to the baffle.

[0015] To sum up, the utility model has at least one of the following beneficial technical effects:

[0016] 1. The ball bearing sealing structure, a through hole is arranged in the side wall of the dust cover, the through hole and the cavity formed between the bearing outer ring, the bearing inner ring and the two dust covers are in communication, therefore, when adding lubricant to the ball bearing, the lubricant is squeezed into the through hole through the through hole, the addition of the lubricant is facilitated, therefore, the addition of the lubricant can be avoided under the condition that the dust cover is removed, the purpose of protecting the dust cover is achieved, and the problem that the dust cover is deformed in the process of dismounting and affects subsequent use is prevented.

[0017] 2. The ball bearing sealing structure, the closing plug is arranged in the sliding hole, the closing plug is inserted into the through hole by the contraction force of the conical spring, the through hole is closed, when the through hole needs to be opened, the end of the conical spring is manually pulled, since the end of the conical spring is fixedly connected to the closing plug and the bottom end of the conical spring is fixedly connected to the baffle, when the closing plug is pulled, the conical spring is stretched and the closing plug is pulled out of the through hole, at this time, the baffle is pushed, the closing plug is deviated from the through hole, and the purpose of opening the through hole is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without paying creative labor.

[0019] Figure 1 It is a structure schematic view of the ball bearing sealing structure of the utility model.

[0020] Figure 2 It is a structure sectional view of the ball bearing sealing structure of the utility model.

[0021] Figure 3 It is a structure schematic view of the sealing assembly of the ball bearing sealing structure of the utility model.

[0022] Figure 4 It is a structure diagram of the ball bearing of the ball bearing sealing structure.

[0023] In the figure, 1, bearing outer ring; 2, bearing inner ring; 3, bearing ball; 4, embedded groove; 5, dust cover; 6, through hole; 7, sealing assembly; 71, sliding rail; 72, baffle; 73, sliding hole; 74, closing plug; 75, conical spring; 76, closed mouth; 77, guide groove; 78, positioning strip; 8, flange; 9, extension cavity; 10, sliding ball. DETAILED DESCRIPTION

[0024] The utility model makes further detailed description in combination with the drawings. EMBODIMENT

[0025] Refer to Figures 1-4 The utility model discloses a kind of ball bearing sealing structure, comprising:

[0026] Bearing outer ring 1, its inside is provided with bearing inner ring 2, bearing inner ring 2 and bearing outer ring 1 between jointly slidingly arranged with several bearing balls 3, bearing outer ring 1, bearing inner ring 2 and bearing ball 3 jointly form ball bearing;

[0027] The inner wall both sides of bearing outer ring 1 and the outer wall both sides of bearing inner ring 2 are all provided with embedded groove 4;

[0028] Dust cover 5, it is set in the inside of the two embedded grooves 4 corresponding to bearing outer ring 1 and bearing inner ring 2, and with bearing outer ring 1 and bearing inner ring 2 rotationally connected, through hole 6 is set in the inside of dust cover 5, and dust cover 5 and the position corresponding to through hole 6 are provided with sealing assembly 7.

[0029] In the embodiment, ball bearing in prior art, when adding lubricant to its inside, mostly need to remove dust cover 5, leading to the inconvenience of lubricant addition, and when removing dust cover 5, dust cover is easily deformed, and the dustproof effect after subsequent installation is reduced, in order to change this situation, the following technical solutions are proposed in the embodiment: through hole 6 is set in the side wall of dust cover 5, and the cavity formed between through hole 6, bearing outer ring 1, bearing inner ring 2 and two dust covers 5 is interconnected, so when adding lubricant to ball bearing, lubricant is extruded through through hole 6, and bearing outer ring 1 and bearing inner ring 2 are continuously rotated in the process of extrusion, until another through hole 6 overflows with lubricant, so as to realize the addition of lubricant, so that the addition of lubricant can be avoided in the case of removing dust cover 5, thereby achieving the purpose of protecting dust cover 5, preventing dust cover 5 from deforming in the process of dismounting and affecting subsequent use.

[0030] By the setting of the embedding groove 4, the dustproof cover 5 and the bearing outer ring 1 are rotationally connected with the bearing inner ring 2.

[0031] In further preferable embodiments of the present application, as shown in Figure 3 and Figure 4 , the inner ring and the outer ring of the dustproof cover 5 are both provided with flanges 8, and the inner groove wall of the embedding groove 4 is provided with an extension cavity 9 matched with the flanges 8.

[0032] In the present embodiment, the setting of the flanges 8 and the extension cavity 9 enables the dustproof cover 5 to be rotationally connected with the bearing outer ring 1 and the bearing inner ring 2, and also enables the dustproof cover 5 to be limited with the bearing outer ring 1 and the bearing inner ring 2, thereby preventing the dustproof cover 5 from falling off.

[0033] In further preferable embodiments of the present application, as shown in Figure 2 , the outer surface of the flange 8 is embedded with a plurality of sliding balls 10, and the sliding balls 10 are rotationally connected with the flange 8.

[0034] In the present embodiment, as shown in Figure 2 , the outer peripheral wall of the flange 8 is embedded with a plurality of sliding balls 10, so that the flange 8 and the extension cavity 9 are in rolling friction, thereby reducing the friction between the flange 8 and the cavity wall of the extension cavity 9 and improving the service life of the flange 8 and the dustproof cover 5.

[0035] In further preferable embodiments of the present application, as shown in Figure 4 , the sealing assembly 7 comprises a sliding rail 71 fixedly arranged on the outer surface of the dustproof cover 5, and the center of the sliding rail 71 corresponds to the position of the through hole 6; the sliding rail 71 is internally slidably provided with a baffle 72, and the baffle 72 is provided with a closure plug assembly at a position corresponding to the through hole 6.

[0036] In the present embodiment, as shown in Figure 4 , when it is necessary to inject lubricant into the bearing, the baffle 72 is first slid to stagger the closure plug assembly with the through hole 6, and then the lubricant is injected into the inside of the ball bearing through the through hole 6; after the injection is completed, the baffle 72 is slid to close the through hole 6 with the closure plug assembly, thereby isolating the inside space of the ball bearing from the outside, and achieving the effect of sealing the ball bearing to prevent dust from entering.

[0037] In further preferable embodiments of the present application, as shown in Figure 4 , the closure plug assembly comprises a sliding hole 73 arranged in the inside of the baffle 72 and corresponding to the position of the through hole 6; the sliding hole 73 is internally slidably provided with a closure plug 74, and the top end of the closure plug 74 is provided with a conical spring 75 fixedly connected with the baffle 72.

[0038] In the present embodiment, as shown in Figure 4As shown, the setting of the sliding hole 73 is used for installing the closing plug 74, the closing plug 74 is inserted in the inside of the through hole 6 by the contraction force of the conical spring 75, the closing of the through hole 6 is realized, when the through hole 6 needs to be opened, the end of the conical spring 75 is manually pulled, because the end of the conical spring 75 is fixedly connected with the closing plug 74, and the bottom end of the conical spring 75 is fixedly connected with the baffle 72, so that when the closing plug 74 is pulled, the conical spring 75 can be stretched, and the closing plug 74 is pulled out from the through hole 6, at this time, the baffle 72 is pushed, the closing plug 74 is offset from the through hole 6, and the purpose of opening the through hole 6 is realized.

[0039] In further preferable embodiments of the present application, as shown in Figure 4 As shown, the end of the sliding rail 71 is provided with a closed end 76, and the inside of the sliding rail 71 is provided with a guide groove 77 on both sides, the inside of the guide groove 77 is slidably provided with a positioning strip 78, and the positioning strip 78 is fixedly connected with the baffle 72.

[0040] In the embodiment, the closed end 76 is provided to limit the movement of the baffle 72, after the baffle 72 moves to contact the closed end 76, the position of the closing plug 74 corresponds to the position of the through hole 6, the setting of the positioning strip 78 and the guide groove 77 improves the stability of the sliding between the baffle 72 and the sliding rail 71, and prevents the baffle 72 from deviating during sliding.

[0041] The implementation principle of the above embodiment is that the through hole 6 is formed in the side wall of the dust cover 5, the through hole 6 is in communication with the cavity formed between the bearing outer ring 1, the bearing inner ring 2 and the two dust covers 5, so that when the lubricant is added to the ball bearing, the lubricant is squeezed into the through hole 6, and the bearing outer ring 1 and the bearing inner ring 2 are continuously rotated during the squeezing process, until the lubricant overflows from the other through hole 6, thereby realizing the addition of the lubricant;

[0042] When it is necessary to add lubricant to the bearing, the end of the conical spring 75 is manually pulled, because the end of the conical spring 75 is fixedly connected with the closing plug 74, and the bottom end of the conical spring 75 is fixedly connected with the baffle 72, so that when the closing plug 74 is pulled, the conical spring 75 can be stretched, and the closing plug 74 is pulled out from the through hole 6, at this time, the baffle 72 is pushed, the closing plug 74 is offset from the through hole 6, and then the lubricant is injected into the inside of the ball bearing through the through hole 6, after the injection is completed, the baffle 72 is slid, the closing plug assembly closes the through hole 6, and the inside space of the ball bearing is isolated from the outside.

[0043] The embodiments of the specific embodiment are preferable embodiments of the present application, and are not limited to the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ball bearing seal structure characterized by, Including have: The inner wall of bearing outer ring (1) both sides and the outer wall of bearing inner ring (2) both sides are set with embedding groove (4); Dust cover (5) is set in bearing outer ring (1) and bearing inner ring (2) corresponding two embedding groove (4) inside, and with bearing outer ring (1) and bearing inner ring (2) rotation connection, dust cover (5) inside is set with through hole (6), and dust cover (5) and through hole (6) corresponding position is provided with sealing assembly (7). The inner ring and outer ring of the dust cover (5) are provided with flanges (8), and the inner groove wall of the embedding groove (4) is provided with an extension cavity (9) matched with the flange (8).

2. A ball bearing seal structure according to claim 1, wherein The outer surface of the flange (8) is embedded with a plurality of sliding balls (10), and the sliding balls (10) are rotatably connected with the flange (8).

3. A ball bearing seal structure according to claim 2, wherein The sealing assembly (7) includes a sliding rail (71) fixedly arranged on the outer surface of the dust cover (5), and the center of the sliding rail (71) corresponds to the position of the through hole (6), the sliding rail (71) is slidably arranged with a baffle (72), and the baffle (72) is provided with a closing plug assembly at a position corresponding to the through hole (6).

4. A ball bearing seal structure according to claim 3, wherein The closing plug assembly includes a sliding hole (73) formed in the inner portion of the baffle (72) and corresponding to the position of the through hole (6), a closing plug (74) slidably arranged in the inner portion of the sliding hole (73), and a conical spring (75) fixedly connected to the top end of the closing plug (74) and fixedly connected to the baffle (72).

5. A ball bearing seal structure according to claim 4, wherein The end of the sliding rail (71) is provided with a closed mouth (76), and the inner portion of the sliding rail (71) is provided with a guide groove (77) on both sides, and the inner portion of the guide groove (77) is slidably provided with a positioning strip (78), and the positioning strip (78) is fixedly connected with the baffle (72).

6. A ball bearing seal structure according to claim 5, wherein ​

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