Anti-slip sealing double-row angular contact injection molding belt pulley bearing assembly

Abstract

The utility model provides an anti-slip sealing double-row angular contact injection molding belt pulley bearing assembly which comprises a ball bearing, an anti-slip module is arranged on the outer side of the ball bearing, and the anti-slip module is located on the outer side wall of a bearing outer ring; the wheel-shaped shell is arranged on the outer side of a bearing outer ring in the ball bearing 1 in a sleeving mode, the center of the wheel-shaped shell is clamped in the anti-skid module, when the ball bearing operates in a high-temperature environment, the temperature of the ball bearing is high, and when the phenomenon of thermal expansion and cold contraction occurs, the interference magnitude of assembly of a knurling groove of the straight knurling and a thermal expansion clamping table in the wheel-shaped shell is increased, and the service life of the ball bearing is prolonged. The ball bearing and the wheel-shaped shell are matched more tightly, the whole bearing assembly can operate more stably, the situation that the bearing is driven by a belt to move in the radial direction can be effectively prevented, and in the same way, the stop groove formed in the outer ring of the bearing along the outer diameter is in clearance fit with the stop boss in the wheel-shaped shell to generate an axial limiting effect; the belt is limited, the bearing is prevented from being driven by the belt to move axially, and the bearing is prevented from moving in the radial direction and the axial direction.

Description

Technical Field

[0001] The utility model relates to the field of bearing design, in particular to the technical field of bearing anti-slipping, and specifically is an anti-slipping sealed double-row angular contact injection-molded belt pulley bearing assembly. Background Art

[0002] During the installation process, the pulley bearing is equipped with a metal wheel-shaped shell on the outside to form a bearing assembly. The metal wheel-shaped shell is used to buffer the belt and the bearing. However, during the use of the pulley bearing, because it is mostly installed in the motor box inside the machine tool, which has a high-speed motor installed inside, the internal ambient temperature is relatively high, and friction will occur between the belt and the metal wheel-shaped shell. Due to temperature conduction and the increase in temperature of the pulley bearing and the metal wheel-shaped shell, thermal expansion and contraction will occur, and a gap will appear between the pulley bearing and the metal wheel-shaped shell. When the belt rotates, the tension force is transmitted to the bearing assembly, and relative displacement will occur between the bearing and the shell, resulting in relative sliding, which will cause axial displacement of the bearing and burst out of the metal wheel-shaped shell, causing the bearing to fail. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an anti-slip sealed double-row angular contact injection molded pulley bearing assembly to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides an anti-slip sealed double-row angular contact injection molded pulley bearing assembly, comprising:

[0005] A ball bearing 1, the ball bearing 1 comprising: a bearing inner ring 11, a bearing retainer 12, balls 13, a bearing outer ring 14 and a sealing ring 15, two No. 1 grooves are opened at equal intervals on the outer wall of the bearing inner ring 11, a bearing retainer 12 is sleeved on the outer side of the bearing inner ring 11, a bearing outer ring 14 is sleeved on the outer side of the bearing retainer 12, two No. 2 grooves are opened at equal intervals on the inner wall of the bearing outer ring 14, balls 13 are clamped at equal intervals on the left and right sides of the bearing retainer 12, one side of the ball 13 is clamped in the No. 1 groove, and the other side of the ball 13 is clamped in the No. 2 groove, the sealing ring 15 is clamped on the left and right sides between the bearing inner ring 11 and the bearing outer ring 14, and one side of the sealing ring 15 is in contact with the bearing retainer 12;

[0006] An anti-skid module 2, which is disposed outside the ball bearing 1 and is located on the outer side wall of the bearing outer ring 14;

[0007] The wheel-shaped housing 3 is sleeved on the outer side of the bearing outer ring 14 in the ball bearing 1 , and the center of the wheel-shaped housing 3 is clamped in the anti-slip module 2 .

[0008] According to the preferred embodiment, the anti-slip module 2 includes: a knurling groove 21, a knurling groove backing process groove 22, and a stop groove 23. The knurling groove 21 is opened in the middle of the outer wall of the bearing outer ring 14. The knurling groove 21 has a knurling groove backing process groove 22 on the left and right sides of the bottom of the knurling groove 21. The stop groove 23 is symmetrically opened on the outer wall of the bearing outer ring 14 on the left and right sides of the knurling groove 21.

[0009] According to the preferred embodiment, the center of the bottom of the knurling groove 21 is a straight knurling.

[0010] According to the preferred embodiment, weight-reducing and heat-dissipating grooves 31 are evenly spaced on the left and right sides of the wheel-shaped shell 3, a thermal expansion card platform 32 is provided in the middle of the inner wall of the wheel-shaped shell 3, and the thermal expansion card platform 32 is interference fit in the knurled groove 21, and a pair of stop bosses 33 are provided on the inner wall of the wheel-shaped shell 3, and the pair of stop bosses 33 are located on the left and right sides of the thermal expansion card platform 32, and the stop bosses 33 are clearance fit in the stop groove 23.

[0011] According to a preferred embodiment, the wheel-shaped housing 3 is made of PA66 engineering plastic.

[0012] According to a preferred embodiment, the wheel-shaped housing 3 is integrally formed by a mold injection molding process.

[0013] The utility model adopts a ball bearing, an anti-skid module and a wheel-shaped shell. The outer contour of the outer ring of the bearing is provided with a pair of retaining grooves and a knurling groove with straight knurling. When the ball bearing operates in a high-temperature environment and its own temperature is high due to heat conduction between the environment and the wheel-shaped shell, and thermal expansion and contraction occur, the interference fit between the knurling groove of the straight knurling and the thermal expansion card table in the wheel-shaped shell increases, so that the fit between the ball bearing and the wheel-shaped shell is tighter, the operation of the overall bearing assembly will be more stable, and the radial movement of the bearing driven by the belt can be effectively prevented. Similarly, the retaining groove arranged along the outer diameter of the outer ring of the bearing produces an axial limiting effect through the clearance cooperation with the stop boss in the wheel-shaped shell, so that the belt is limited to prevent the bearing from being driven by the belt and axial movement, thereby preventing the radial and axial movement of the bearing.

[0014] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a mid-section view of the present utility model;

[0016] Figure 2 The display is a front view of the utility model;

[0017] Figure 3 Shown is a half-section view of the utility model;

[0018] Description of symbols

[0019] 1. Ball bearing; 11. Bearing inner ring; 12. Bearing cage; 13. Ball; 14. Bearing outer ring; 15. Sealing ring;

[0020] 2. Anti-slip module; 21. Knurling groove; 22. Knurling groove backing groove; 23. Stop groove;

[0021] 3. Wheel-shaped housing; 31. Weight-reducing heat dissipation slot; 32. Thermal expansion card platform; 33. Stop boss; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0024] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] The utility model proposes an anti-slip sealed double-row angular contact injection molded pulley bearing assembly, which is used in the anti-slip process of bearings. The structure of the ball bearing 1, the anti-slip module 2 and the wheel-shaped shell 3 is particularly suitable for preventing the ball bearing 1 from sliding relative to the wheel-shaped shell 3 when the ball bearing 1 and the wheel-shaped shell 3 are in a high-temperature working state, thereby preventing the ball bearing 1 from sliding out and failing.

[0026] In general, the anti-slip sealed double-row angular contact injection molded pulley bearing assembly proposed by the present invention mainly includes: a ball bearing 1, an anti-slip module 2 and a wheel-shaped housing 3, wherein, see Figure 1 , which shows the arrangement relationship of the ball bearing 1, the anti-slip module 2 and the wheel-shaped housing 3.

[0027] The anti-slip sealed double-row angular contact injection molded pulley bearing assembly proposed by the utility model is as follows Figure 2 The outer contour of the bearing outer ring 14 shown is provided with a pair of retaining grooves 23 and a knurling groove 21 with straight knurling. When the ball bearing 1 operates in a high temperature environment and its own temperature is high due to heat conduction between the environment and the wheel-shaped shell 3, and thermal expansion and contraction occur, the interference fit between the knurling groove 21 with straight knurling and the thermal expansion card table 32 in the wheel-shaped shell 3 increases, so that the ball bearing 1 and the wheel-shaped shell 3 fit more tightly, and the operation of the overall bearing assembly will be more stable, which can effectively prevent the bearing from being driven by the belt to move radially. Similarly, the retaining groove 23 arranged along the outer diameter of the bearing outer ring 14 produces an axial limiting effect through the clearance cooperation with the stop boss 33 in the wheel-shaped shell 3, so as to limit the belt to prevent the bearing from being driven by the belt to move axially, and prevent the radial and axial movement of the bearing.

[0028] The ball bearing 1 comprises: a bearing inner ring 11, a bearing retainer 12, balls 13, a bearing outer ring 14 and a sealing ring 15. Two No. 1 grooves are opened at equal intervals on the outer wall of the bearing inner ring 11. The bearing retainer 12 is sleeved on the outer side of the bearing inner ring 11. The bearing outer ring 14 is sleeved on the outer side of the bearing retainer 12. Two No. 2 grooves are opened at equal intervals on the inner wall of the bearing outer ring 14. Balls 13 are clamped at equal intervals on the left and right sides of the bearing retainer 12. One side of the ball 13 is clamped in the No. 1 groove, and the other side of the ball 13 is clamped in the No. 2 groove. The sealing ring 15 is clamped on the left and right sides between the bearing inner ring 11 and the bearing outer ring 14, and one side of the sealing ring 15 is in contact with the bearing retainer 12.

[0029] The above-mentioned anti-slip module 2 is opened on the outside of the ball bearing 1, and the anti-slip module 2 is located on the outer side wall of the bearing outer ring 14. The anti-slip module 2 includes: a knurling groove 21, a knurling groove backing process groove 22, and a stop groove 23. The knurling groove 21 is opened in the middle of the outer side wall of the bearing outer ring 14, and a knurling groove backing process groove 22 is opened on the left and right sides of the bottom of the knurling groove 21. The stop groove 23 is symmetrically opened on the outer side wall of the bearing outer ring 14 and is located on the left and right sides of the knurling groove 21.

[0030] The above-mentioned wheel-shaped shell 3 is sleeved on the outer side of the outer ring 14 of the bearing in the ball bearing 1, and the center of the wheel-shaped shell 3 is clamped in the anti-slip module 2. Weight-reducing heat dissipation grooves 31 are equidistantly provided on the left and right sides of the wheel-shaped shell 3. The weight-reducing heat dissipation grooves 31 increase the heat dissipation area and can effectively reduce the material saved by processing the wheel-shaped shell 3. A thermal expansion card platform 32 is provided in the center of the inner wall of the wheel-shaped shell 3, and the thermal expansion card platform 32 is clamped in the knurling groove 21. A pair of stop bosses 33 are provided on the inner wall of the wheel-shaped shell 3. The pair of stop bosses 33 are located on the left and right sides of the thermal expansion card platform 32, and the stop bosses 33 are clamped in the stop groove 23. The wheel-shaped shell 3 is made of PA66 engineering plastic, which has lower thermal conductivity than metal. The efficiency of heat conduction from the wheel-shaped shell 3 to the ball bearing 1 is lower than that of metal, and the ball bearing 1 heats up slowly. The wheel-shaped shell 3 is integrally formed by a mold injection molding process, and the mold injection molding production has high precision and is suitable for mass production.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An anti-slip sealed double-row angular contact injection molded pulley bearing assembly, characterized in that: include: A ball bearing (1), the ball bearing (1) comprising: a bearing inner ring (11), a bearing retainer (12), a ball (13), a bearing outer ring (14) and a sealing ring (15), the outer wall of the bearing inner ring (11) being provided with two number one grooves at equal intervals, the outer side of the bearing inner ring (11) being provided with a bearing retainer (12), the outer side of the bearing retainer (12) being provided with a bearing outer ring (14), the inner wall of the bearing outer ring (14) being provided with two number two grooves at equal intervals, the left and right sides of the bearing retainer (12) being provided with balls (13) at equal intervals, one side of the ball (13) being provided in the number one groove, and the other side of the ball (13) being provided in the number two groove, the sealing ring (15) being provided in the left and right sides between the bearing inner ring (11) and the bearing outer ring (14), and one side of the sealing ring (15) being in contact with the bearing retainer (12).

2. The anti-slip sealed double-row angular contact injection molded pulley bearing assembly according to claim 1, characterized in that: The anti-slip module (2) comprises: a knurling groove (21), a knurling groove backing process groove (22), and a stop groove (23); the knurling groove (21) is arranged in the middle of the outer wall of the bearing outer ring (14); the knurling groove backing process groove (22) is arranged on the left and right sides of the bottom of the knurling groove (21); and the stop groove (23) is symmetrically arranged on the outer wall of the bearing outer ring (14) on the left and right sides of the knurling groove (21).

3. The anti-slip sealed double-row angular contact injection molded pulley bearing assembly according to claim 2, characterized in that: The center of the bottom of the knurling groove (21) is a straight knurling.

4. The anti-slip sealed double row angular contact injection molded pulley bearing assembly according to claim 3, characterized in that: The wheel-shaped shell (3) has weight-reducing and heat-dissipating grooves (31) at equal intervals on the left and right sides. A heat expansion card platform (32) is arranged in the middle of the inner wall of the wheel-shaped shell (3). The heat expansion card platform (32) is interference-fitted and stuck in the knurled groove (21). The inner wall of the wheel-shaped shell (3) has a pair of stop bosses (33). The pair of stop bosses (33) are located on the left and right sides of the heat expansion card platform (32). The stop bosses (33) are clearance-fitted and stuck in the stop groove (23).

5. The anti-slip sealed double row angular contact injection molded pulley bearing assembly according to claim 4, characterized in that: The wheel-shaped housing (3) is made of PA66 engineering plastic material.

6. The anti-slip sealed double row angular contact injection molded pulley bearing assembly according to claim 5, characterized in that: The wheel-shaped housing (3) is integrally formed by a mold injection molding process.

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