Contact ball bearing convenient to assemble

Abstract

A contact ball bearing convenient to assemble comprises an outer ring, an inner ring and a retainer located between the outer ring and the inner ring, a plurality of balls are arranged in the retainer, and the inner ring comprises a first combined ring, a second combined ring and a connecting piece used for fixing the first combined ring and the second combined ring. The inner ring further comprises inner arc channels which are symmetrically distributed on the first combined ring and the second combined ring; connecting holes are formed in the corresponding positions of the first combination ring and the second combination ring and located in the middles of the first combination ring and the second combination ring, and the connecting pieces are matched with the connecting holes so that the first combination ring and the second combination ring can be fixed. The bearing has the beneficial effects that the inner ring is divided into the first combined ring and the second combined ring, and the first combined ring and the second combined ring are fixed through the connecting piece, so that the whole bearing can be mounted by splicing the first combined ring and the second combined ring after the balls are mounted in the retainer, and compared with a press-mounting inner ring, the bearing is more convenient to mount and dismount. According to the scheme, the bearing is more convenient to assemble.

Description

Technical Field

[0001] The utility model relates to a contact ball bearing, in particular to a contact ball bearing which is easy to assemble. Background Art

[0002] The process of installing contact ball bearings requires meticulous work to ensure the correct fit and performance of the bearings. First, the cage is precisely installed into the outer ring, the opening is aligned to one side, and then gently pushed in to ensure a tight fit with the inner surface of the outer ring. Next, the balls are placed one by one into the raceway of the cage, a step that requires special care because any improper operation may cause the balls to be misaligned. Finally, the inner ring is aligned and pressed in until it is in full contact with the outer surface of the outer ring, completing the assembly of the bearing.

[0003] However, this installation method has some inconveniences after the balls are installed, especially the problem that the balls are easy to fall out of the cage. This is because the design of the cages currently on the market lacks an effective fixing mechanism, or fails to ensure that the balls are evenly distributed and stable during operation. In addition, if the operating space is limited or there is a lack of appropriate installation tools, it will increase the difficulty of positioning the balls in the cage, resulting in reduced installation efficiency and possible bearing damage. Therefore, designing a self-locking device or adopting other methods of fixing the balls is crucial to prevent the balls from falling out of the cage. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a contact ball bearing which is easier to assemble.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a contact ball bearing that is easy to assemble, comprising an outer ring, an inner ring and a retaining frame located between the two, a plurality of balls are arranged in the retaining frame, the inner ring comprises a first combination ring, a second combination ring and a connecting piece for fixing the first combination ring and the second combination ring, the inner ring also comprises inner arc tracks symmetrically distributed on the first combination ring and the second combination ring; connecting holes are provided at corresponding positions on the first combination ring and the second combination ring and the connecting holes are located in the middle of the first combination ring and the second combination ring, and the connecting piece cooperates with the connecting hole to achieve fixation between the first combination ring and the second combination ring.

[0006] The beneficial effect of the utility model is that by splitting the inner ring into the first combination ring and the second combination ring and fixing the two by the connecting piece, after the ball is installed in the retainer, the installation of the whole bearing can be realized by splicing the first combination ring and the second combination ring. Compared with the press-fit inner ring, this scheme is more convenient when assembling the bearing. In addition, the inner ring is divided into the first combination ring part and the second combination ring part from the center of the inner arc, so as to ensure the integrity of the inner arc after the first combination ring and the second combination ring are spliced, and further the contact position of the ball can be set correspondingly at the center of the arc of the first combination ring and the second combination ring, so as to ensure that the ball can run normally in the channel.

[0007] Furthermore, the connecting member includes a rod and a head arranged at the top of the rod, and a placement groove for placing the connecting member is arranged on the first combination ring corresponding to the head of the connecting member, and the depth of the placement groove is equivalent to the height of the connecting member head.

[0008] The depth of the placement groove is equivalent to the height of the head of the connecting piece to ensure that the head of the connecting piece will not protrude out of the bearing after the first combination ring and the second combination ring are connected to avoid affecting the subsequent installation of the bearing; and the rod length can be set to be less than the depth of the connecting hole, so as to ensure that the rod length will not exceed the connecting hole and cause problems affecting the subsequent installation of the bearing.

[0009] Furthermore, the retaining frame is provided with rolling holes for placing the balls in a corresponding number, the outer diameter of the opening of the rolling hole toward the inner diameter side of the retaining frame is larger than the outer diameter of the balls, and each rolling hole is provided with an elastic lock buckle on the side corresponding to the inner diameter of the retaining frame, and the elastic lock buckle surrounds the balls after the balls are installed in the rolling holes and is used to prevent the balls from falling out.

[0010] The outer diameter of the opening of the rolling hole toward the inner diameter of the retainer is larger than the outer diameter of the ball, making it easier to install the ball into the rolling hole. After the ball is installed in the rolling hole, the elastic lock part wraps the ball to prevent the ball from falling out of the rolling hole.

[0011] Furthermore, a mounting hole for placing an elastic lock buckle is provided in the rolling hole, and the elastic lock buckle is movably arranged in the mounting hole. The elastic lock buckle includes a locking surface for fitting with the ball, and the locking surface is arc-shaped and the arc-shaped surface of the locking surface away from the opening direction of the rolling hole is protruding from the inner circumference of the rolling hole.

[0012] During the ball installation process, its outer surface is attached to the locking surface of the elastic lock buckle, and as the ball is attached to the locking surface and enters the rolling hole, the other end of the elastic lock buckle moves toward the bottom of the installation hole and gradually becomes flush with the inner surface of the rolling hole. After the ball is completely inserted into the rolling hole, the other end of the elastic lock buckle wraps around the ball to prevent the ball from falling out of the rolling hole.

[0013] Furthermore, an elastic member is arranged in the elastic lock buckle, and two ends of the elastic member are respectively fixed at the bottom of the mounting hole and the lowest point of the locking surface.

[0014] After the ball completely enters the rolling hole, the elastic member can absorb part of the rolling shaking and make the elastic lock always fit on the ball after the ball is installed, thereby stabilizing the position of the ball and preventing the ball from shifting during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an axonometric diagram of an embodiment of the utility model;

[0016] Figure 2 A cross-sectional view of an embodiment of the utility model;

[0017] Figure 3 This is an axonometric view of a cage according to an embodiment of the utility model;

[0018] Figure 4 This is a cross-sectional view of the embodiment of the utility model when no balls are installed in the rolling hole;

[0019] Figure 5 This is a cross-sectional view of a rolling hole according to an embodiment of the utility model when a ball is installed. DETAILED DESCRIPTION

[0020] The utility model embodiment is a contact ball bearing that is easy to assemble. Figure 1-5 As shown: it includes an outer ring 1, an inner ring 2 and a retainer 4 located between the outer ring 1 and the inner ring 2, and the retainer 4 is used to load the ball 3. The outer ring 1 and the inner ring 2 are respectively provided with an outer arc track 11 and an inner arc track 24 at corresponding positions, and the outer arc track 11 and the inner arc track 24 cooperate to form a channel for the ball 3 to run therein. The inner ring 2 includes a first combination ring 21, a second combination ring 22 and a connecting member 23 for connecting the first combination ring 21 and the second combination ring 22, and the first combination ring 21 and the second combination ring 22 make the inner arc track 24 equally divided between the first combination ring 21 and the second combination ring 22. The first combination ring 21 and the second combination ring 22 are provided with a spliced ​​connecting hole 25 at corresponding positions located at the center of the inner ring 2, and the connecting hole 25 is provided with a placement groove 251 at the first combination ring 21, and the connecting member 23 includes a rod 231 whose length is less than the depth of the connecting hole 25 and a head 232 whose height is less than the depth of the placement groove 251. In this embodiment, the connecting hole 25 and the connecting member 23 can be a threaded hole and a bolt respectively.

[0021] The cage 4 is provided with rolling holes 41 corresponding to the number of balls 3 for placement, the opening diameter of the rolling holes 41 facing the inner diameter side of the cage 4 is larger than the outer diameter of the balls 3, and a mounting hole 411 is provided at the opening, and an elastic lock 42 is movably arranged in the mounting hole 411. The elastic lock 42 has a locking surface 421 formed on its outer surface, the locking surface 421 is arc-shaped, and the locking surface 421 is connected to the inner surface of the rolling hole 41 near the opening of the inner diameter side of the cage, and the other end thereof is protruded and arranged outside the inner surface of the rolling hole 41, and the elastic lock 42 also includes an elastic member 422 whose two ends are respectively fixed to the bottom of the mounting hole 411 and the lowest point of the locking surface 421.

[0022] The following is a brief description of the assembly process of this embodiment: the retainer 4 is installed in the outer ring 1, and the larger side of the rolling hole 41 is placed toward the inner diameter direction of the retainer 4, and then the ball 3 is placed in the rolling hole 41 from the opening of the rolling hole 41 in sequence. As the ball 3 is placed in the rolling hole 41, the elastic lock 42 on the retainer 4 gradually forms a positioning for the ball 3 to prevent the ball 3 from escaping from the rolling hole 41 during movement; then the first combination ring 21 and the second combination ring 22 are aligned and spliced, and the connecting piece 23 is inserted into the connecting hole 25 to achieve the connection between the two, and because the connecting piece 23 is not in the connecting hole 25 as a whole, the setting of the connecting piece 23 will not affect the subsequent installation of the bearing in this embodiment. Compared with the prior art, the assembly of the bearing in this embodiment is simpler and easier to operate.

[0023] The above embodiment is only one of the preferred specific embodiments of the present invention. Common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A contact ball bearing that is easy to assemble, comprising an outer ring, an inner ring and a cage located between the outer ring and the inner ring, wherein a plurality of balls are arranged in the cage, and characterized in that: The inner ring includes a first combination ring, a second combination ring and a connecting piece for fixing the first combination ring and the second combination ring, and the inner ring also includes inner arc tracks symmetrically distributed on the first combination ring and the second combination ring; connecting holes are provided at corresponding positions on the first combination ring and the second combination ring, and the connecting holes are located in the middle of the first combination ring and the second combination ring, and the connecting piece cooperates with the connecting hole to achieve fixation between the first combination ring and the second combination ring.

2. The contact ball bearing that is easy to assemble according to claim 1, characterized in that: The connecting member comprises a rod and a head arranged at the top of the rod. A placement groove for placing the connecting member is arranged on the first combination ring corresponding to the head of the connecting member. The depth of the placement groove is equivalent to the height of the connecting member head.

3. The contact ball bearing that is easy to assemble according to claim 1, characterized in that: The retaining frame is provided with rolling holes corresponding to the number of balls for placement. The outer diameter of the opening of the rolling hole toward the inner diameter side of the retaining frame is larger than the outer diameter of the ball, and each rolling hole is provided with an elastic lock buckle on the side corresponding to the inner diameter of the retaining frame. After the ball is installed in the rolling hole, the elastic lock buckle surrounds the ball and is used to prevent the ball from falling out.

4. The contact ball bearing that is easy to assemble according to claim 3, characterized in that: A mounting hole for placing an elastic lock buckle is provided in the rolling hole, and the elastic lock buckle is movably arranged in the mounting hole. The elastic lock buckle includes a locking surface for fitting with the ball, and the locking surface is arc-shaped and the arc surface of the locking surface away from the opening direction of the rolling hole is protruding from the inner circumference of the rolling hole.

5. The contact ball bearing that is easy to assemble according to claim 4, characterized in that: An elastic piece is arranged in the elastic lock buckle, and two ends of the elastic piece are respectively fixed at the bottom of the mounting hole and the lowest point of the locking surface.

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