Damping bearing and vehicle-mounted robot

Abstract

The utility model discloses a damping bearing and a vehicle-mounted robot, and relates to the technical field of bearings, the damping bearing comprises an outer cover structure, an abutting structure and an inner ring structure, the outer cover structure comprises a bearing cover and a bearing base, the bearing cover is movably installed on the bearing base in the axis direction of the bearing cover, and the abutting structure is connected with the inner ring structure. The abutting structure is arranged between the bearing cover and the bearing base so as to form an installation cavity with the adjustable axial volume, the abutting structure comprises a first abutting part and a second abutting part, the first abutting part and the second abutting part are installed on the sides, corresponding to the installation cavity, of the bearing cover and the bearing base respectively, and the inner ring structure comprises an inner ring shaft and a plurality of balls; according to the technical scheme, the damping bearing is adjustable in damping, reliable in structure, convenient to operate and low in dependence on external factors in the actual use process, and compared with a traditional damping bearing for the vehicle-mounted robot, the damping bearing is high in stability and has good application prospects.

Description

Technical Field

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

[0002] Damping bearings, as devices that can provide resistance to movement and dissipate kinetic energy, are widely used in various industries, especially in the automotive field, where they are installed in many structures.

[0003] Currently, the main types of automotive damping bearings used in the market are as follows: 1. Silicone oil damping bearings: Silicone oil damping bearings rely on the resistance of silicone oil to provide damping. The resistance of silicone oil is significantly affected by speed and temperature. Generally speaking, higher speeds result in greater resistance, while higher temperatures result in less resistance. When these damping bearings are installed on a robot, the damping of the damping bearings is very low when the robot is stationary, failing to provide the required holding force. Furthermore, the unstable damping value of the damping bearings affects the stability of the robot's electronic control. 2. Magnetic damping bearings: Magnetic damping bearings rely on the magnetic force of magnets to provide damping. After the robot moves to a certain position, the residual magnetism of the magnetic damping bearings can cause magnetic force imbalance when the robot stops, resulting in rebound, making it impossible to control the robot's movement to the desired position. 3. Electromagnetic clutches: Electromagnetic clutches rely on the magnetic force of an electromagnet to control the engagement and disengagement of friction plates to provide damping. The electromagnets require power, and much of this energy is converted into heat, increasing the robot's power consumption and reducing the vehicle's range. Furthermore, the heat generated by the electromagnetic clutch can damage the robot's internal components. 4. Outer ring riveted damping bearing: The riveting process can damage the internal balls of the bearing, potentially causing operational lag. This new damping bearing is proposed to address the aforementioned poor stability issues of traditional vehicle-mounted bearings used in vehicle-mounted robots. Utility Model Content

[0004] The main purpose of the utility model is to provide a damping bearing, aiming to solve the problem of poor stability of traditional vehicle-mounted damping bearings during use.

[0005] To achieve the above-mentioned purpose, the damping bearing proposed in the present invention includes:

[0006] The outer cover structure includes a bearing cover and a bearing base, wherein the bearing cover is movably mounted on the bearing base along its axial direction to form a mounting cavity with adjustable axial volume therebetween;

[0007] an abutting structure, comprising a first abutting portion and a second abutting portion, wherein the first abutting portion and the second abutting portion are respectively mounted on one side of the bearing cover and the bearing base corresponding to the mounting cavity; and

[0008] The inner ring structure includes an inner ring shaft and multiple balls. The end of the inner ring shaft corresponding to the mounting cavity is the mounting end. A retaining frame is provided on the mounting end. The multiple balls are evenly spaced and arranged on the retaining frame. The multiple balls are all in contact with the mounting end, the first abutting portion and the second abutting portion.

[0009] In one embodiment, the first abutting portion is fixedly mounted on the bearing cover, the second abutting portion is movably mounted on the bearing base along the axial direction of the bearing base, and an elastic member is provided between the second abutting portion and the bearing base.

[0010] In one embodiment, the first abutting portion and the second abutting portion are respectively configured as a first raceway ring and a second raceway ring, and the inner rings of the first raceway ring and the second raceway ring are both inclined to form two inclined end faces, the two inclined end faces are oppositely arranged, and the plurality of balls are in contact with the two inclined end faces.

[0011] In one embodiment, the elastic member is configured as a corrugated sheet, and the corrugated sheet is respectively formed with a plurality of first contact portions and a plurality of second contact portions corresponding to the bearing base and the second raceway ring, the plurality of first contact portions are fixedly mounted on the bearing base, and the plurality of second contact portions are all in contact with the end face of the second raceway ring.

[0012] In one embodiment, a circle of arc-shaped grooves is provided on the arc-shaped wall of the mounting end, and the plurality of balls are partially disposed in the arc-shaped grooves;

[0013] The retaining frame is provided with a plurality of arc-shaped limiting grooves, and the plurality of balls are respectively installed inside the plurality of arc-shaped limiting grooves;

[0014] The second raceway ring is arranged on the outer periphery of the retainer.

[0015] In one embodiment, the bearing base is provided with a circle of internal threads, and the bearing cover is provided with a circle of external threads corresponding to the internal threads;

[0016] A screw block protruding from the end surface of the bearing cover is provided on the outer end surface facing away from the installation cavity.

[0017] In one embodiment, the bearing cover is provided with a through hole penetrating the screw block along its axial direction, and the through hole is connected to the mounting cavity;

[0018] The inner ring shaft further includes a connecting end, the connecting end is arranged outside the mounting cavity at the through hole, and a connecting hole is further provided on the connecting end; and / or,

[0019] The screwing block is configured as a hexagonal column.

[0020] In one embodiment, the mounting end and the connecting end are arranged in a stepped manner, and a cross section of the mounting end is larger than a cross section of the connecting end, and the mounting end is partially arranged in the through hole.

[0021] In one embodiment, a mounting ear is provided on the outer peripheral wall of the bearing base.

[0022] The present invention also includes a vehicle-mounted robot, the vehicle-mounted robot including a damping bearing, the damping bearing including:

[0023] The outer cover structure includes a bearing cover and a bearing base, wherein the bearing cover is movably mounted on the bearing base along its axial direction to form a mounting cavity with adjustable axial volume therebetween;

[0024] an abutting structure, comprising a first abutting portion and a second abutting portion, wherein the first abutting portion and the second abutting portion are respectively mounted on one side of the bearing cover and the bearing base corresponding to the mounting cavity; and

[0025] The inner ring structure includes an inner ring shaft and multiple balls. The end of the inner ring shaft corresponding to the mounting cavity is the mounting end. The arcuate wall of the mounting end, the first abutment portion and the second abutment portion jointly define a raceway cavity. The multiple balls are all arranged in the raceway cavity and are in contact with the mounting end, the first abutment portion and the second abutment portion.

[0026] In the technical solution of the present invention, the damping bearing provides damping by friction between the ball bearings and the track plate, and the metal inner ring. It is not affected by the ambient temperature or the relative speed between the inner and outer rings of the damping bearing, and the electronic control can stably control the movement of the robot. It does not rely on magnetic force to provide damping, so there is no rebound problem. It relies on rolling friction to provide damping, and does not require additional power supply, so there is no additional power consumption. It does not require additional power supply, so there is no conversion of electrical energy into heat energy, and there is no risk of heat damage to the internal components of the robot. The bearing cover and the bearing base are connected by a threaded structure, which is reliable and avoids damage to the internal balls of the bearing and jamming caused by riveting. The damping bearing has a reliable structure, is easy to operate, and has a low dependence on external factors during actual use. Compared with traditional damping bearings for vehicle-mounted robots, it has higher stability and better application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a damping bearing provided by the present utility model;

[0029] Figure 2 for Figure 1 The structural exploded diagram of the damping bearing provided in;

[0030] Figure 3 for Figure 1 Top view of the middle damping bearing;

[0031] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0032] Description of Figure Numbers:

[0033] 100. Damping bearing; 1. Outer cover structure; 11. Bearing cover; 111. Screw block; 112. Through hole; 113. External thread; 12. Bearing base; 121. Internal thread; 122. Mounting ear; 2. Abutment structure; 21. First raceway ring; 22. Second raceway ring; 222. Inclined end face; 3. Inner ring structure; 31. Inner ring shaft; 311. Mounting end; 3111. Arc groove; 3112. Retaining frame; 3113. Arc limit groove; 312. Connecting end; 3121. Connecting hole; 32. Ball; 4. Corrugated sheet; 41. First contact portion; 42. Second contact portion.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0036] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0038] Currently, the main types of vehicle-mounted damping bearings used on the market include silicone oil damping bearings, magnetic damping bearings, electromagnetic clutches, and outer ring riveted damping bearings. After being used in vehicle-mounted robots, some of these damping bearings are significantly affected by external factors during use, making them difficult to control independently. Some bearing structures also have poor stability during use, making it difficult to meet electronic control requirements. This new damping bearing is designed to address the above-mentioned poor stability issues of traditional vehicle-mounted bearings used in vehicle-mounted robots.

[0039] The present utility model proposes a damping bearing 100 to solve the above problems.

[0040] See also Figures 1 to 4In one embodiment of the present invention, the damping bearing 100 is mainly used in the installation structure of a vehicle-mounted robot. For a vehicle-mounted robot, it integrates multiple functions such as intelligent navigation and voice interaction. Its installation structure generally has a certain degree of mobility, and the damping bearing is an important component of its installation structure. In this embodiment, the overall structure of the damping bearing 100 is configured as a variable damping bearing whose damping size can be adjusted according to actual requirements, and can effectively ensure the stability of the entire bearing structure during use. Specifically, in this embodiment, the damping bearing 100 mainly includes three parts: an outer cover structure 1, an abutment structure 2, and an inner ring structure 3. Among them, the bearing cover 11 and the bearing base 12 in the outer cover structure 1 are movably installed. During actual use, the bearing cover 11 can be adjusted to move along the axial direction of the bearing base 12, thereby adjusting the axial space of the installation cavity formed between the two. One end of the inner ring shaft 31 is arranged outside the installation cavity and can establish a connection relationship with the external shaft structure. During actual use, the inner ring shaft 31 rotates, and the multiple balls 32 in the raceway cavity roll between the inner ring shaft 31, the first abutment portion and the second abutment portion, thereby effectively reducing the inner ring shaft 31 during rotation. When adjusting the damping of the entire bearing structure, for example, increasing the overall damping, the bearing cap 11 is adjusted to move toward the bearing base 12, thereby reducing the axial spacing of the mounting cavity. At this point, the first and second abutment portions exert a greater contact force on the balls 32, increasing the force between the balls 32 and the inner ring shaft 31. This creates relative motion between the balls 32, the inner ring shaft 31, and the first and second abutment portions, generating friction that increases the damping torque. Correspondingly, when decreasing the overall damping, the bearing cap 11 is adjusted to move toward the bearing base 12, thereby reducing the overall damping of the bearing structure.

[0041] It should be noted that, in the structure in the above embodiment, damping is provided only by friction generated between the ball 32 and the first abutting portion, the second abutting portion and the inner ring shaft 31, and is not affected by the ambient temperature and the relative movement speed between the inner and outer rings of the damping. The electronic control can stably control the movement of the robot, solving the problem of poor stability of traditional silicone oil damping bearings when the robot is stationary; the entire structure does not rely on magnetic force to provide damping, and there is no rebound problem existing in magnetic damping bearings; during its specific use, damping is provided by rolling friction, and no additional power supply is required, no additional power is consumed, and no additional power supply is required, there is no conversion of electric energy into heat energy, and there is no risk of heat damage to the internal components of the robot. Compared with traditional vehicle-mounted robot damping bearings, its stability is greatly improved.

[0042] To further enhance the overall damping adjustment range of the damping bearing 100 and ensure more uniform force distribution between the first and second abutting portions, in this embodiment, an elastic member is provided between the second abutting portion and the bearing base 12. The pressure provided by the elastic member not only enhances the downward force range provided by the second abutting portion but also allows the second abutting portion to provide a more stable downward force. Furthermore, the provision of the elastic member minimizes pressure decay over time and operating hours, contributing to improved stability during operation of the entire damping bearing 100. Furthermore, in this embodiment, the second abutting portion is guided and mounted on the inner wall of the bearing base 12 along its axis, enhancing the stability of the second abutting portion during its movement along the axis of the bearing base 12 and minimizing vibration during rotation of the inner ring shaft 31.

[0043] In this embodiment, the first abutment portion and the second abutment portion are respectively set as the first raceway ring 21 and the second raceway ring 22, and in order to ensure that the plurality of balls 32 can have a tendency to move toward the inner race shaft 31 after being subjected to pressure, thereby increasing the contact force between the plurality of balls 32 and the inner race shaft 31, in this embodiment, the inner rings of the first raceway ring 21 and the second raceway ring 22 are both inclined, and the inclined end surfaces 222 of the two inclined inner rings are correspondingly arranged. The plurality of balls 32 are arranged between the inner race shaft 31 and the inner inclined inner walls of the two raceway rings. When the second raceway ring 22 moves toward the first raceway ring 21, the two inclined side walls can promote the plurality of balls 32 to move toward the inner race shaft 31 at the same time, thereby increasing the acting force between the plurality of balls 32 and the above three contact members. During the rotation of the inner race shaft 31, the damping torque generated by the friction force will increase.

[0044] The elastic member is specifically configured as a corrugated sheet 4, which is annular and has multiple first contact portions 41 and multiple second contact portions 42 formed thereon corresponding to the bearing base 12 and the second raceway ring 22, respectively. During installation, the multiple first contact portions 41 are mounted on the bearing base 12, and the multiple second contact portions 42 all contact the end surface of the second raceway ring 22. It should be noted that the number of the multiple first contact portions 41 and the multiple second contact portions 42 is at least three, respectively. During actual installation, to prevent the corrugated sheet 4 from moving within the installation cavity, the multiple first contact portions 41 can be fixedly mounted on the inner end surface of the bearing seat. The fixing structure is not limited to a slotted hole structure or a welded connection.

[0045] To ensure the stability of the position of the multiple balls 32 on the curved outer wall of the inner ring shaft 31, in addition to the aforementioned retainer 3112, a circle of arcuate grooves 3111 are also provided on the curved wall of the mounting end 311. The multiple balls 32 are partially located within these arcuate grooves 3111. The multiple balls 32 are restrained and installed by these arcuate grooves 3111 and the arcuate retaining grooves 3113. This ensures the stability and uniformity of their position on the circumferential wall of the inner ring shaft 31, contributing to the overall stability of the bearing structure. Furthermore, considering the overall axial specifications of the bearing, in this embodiment, the second raceway ring 22 is positioned on the outer periphery of the retainer 3112, effectively reducing the overall axial length of the bearing structure.

[0046] The bearing base 12 and the bearing cap 11 can generate relative movement in the axial direction to adjust the overall damping of the entire bearing structure. During this process, it is necessary to consider that after the overall damping of the entire bearing structure is adjusted, the positional stability between the bearing cap 11 and the bearing base 12 must be maintained to ensure the size of the axial space of the installation cavity. At this time, the damping torque generated by the friction force can be maintained in a relatively stable state. In this embodiment, considering the convenience of operation, the adjustment structure between the above two is configured as a threaded structure. Specifically, the bearing base 12 is provided with a circle of internal threads 121, and the bearing cap 11 is provided with a circle of external threads 113 corresponding to the internal threads 121. At the same time, for ease of operation, a screw block 111 is provided on the outer end surface of the bearing cap 11 facing away from the installation cavity, protruding from the end surface. During the actual adjustment process, the screw block 111 can be rotated to perform the operation. The screw block 111 can be configured as a hexagonal column structure. During adjustment, it can be directly adjusted with an external hexagonal wrench, greatly improving the convenience of the adjustment process. At the same time, the bearing base 12 and the bearing cover 11 are matched and installed through a threaded structure. On the one hand, the adjustment process is more convenient, and at the same time, the threads can be locked when matched, and the stability of the position between the bearing base 12 and the bearing cover 11 can also be guaranteed.

[0047] One end of the inner ring shaft 31 is used to form a connection relationship with the external shaft body, so the connection end 312 of the other end of the inner ring shaft 31 extends outward through the bearing cover 11 and the through hole 112 on the block screwing block 111. In addition, in order to facilitate the formation of a stable connection relationship between the connection end 312 and the external shaft body, a connection hole 3121 is also provided on the connection end 312. The connection hole 3121 can be set as a threaded hole. During actual use, the top screw can be locked in this threaded hole to connect the inner ring shaft 31 and the external moving shaft.

[0048] The inner ring shaft 31 is actually configured as a stepped shaft. Specifically, the radial cross-section of the mounting end 311 is larger than the radial cross-section of the connecting end 312, and the mounting end 311 is partially disposed in the through hole 112, with a circumference slightly smaller than the aperture of the through hole 112. After the actual installation is completed, it can also play a certain sealing role and provide certain protection for the internal structure.

[0049] In addition, in order to facilitate the installation of the entire bearing structure, mounting ears 122 are provided on the outer peripheral wall of the bearing base 12. The number of the mounting ears 122 can be set to multiple, and the specific number can be determined according to the actual usage scenario.

[0050] The damping bearing 100 in this solution is primarily used in vehicle-mounted robots. Its structure is relatively simple, and the damping adjustment mechanisms are all implemented within the internal structure of the damping bearing 100 itself. Compared to electromagnetic clutches, it does not require power, and there is no problem of converting most of the electrical energy into heat, increasing power consumption and reducing the vehicle's range. Furthermore, there is no risk of electromagnetic clutch heating and damaging the robot's internal components. Compared to magnetic damping bearings, when the rotating shaft stops, there is no rebound due to magnetic imbalance, resulting in an inability to control the robot's movement to a specified position. Compared to silicone oil damping bearings, its damping is unaffected by speed and temperature, resulting in greater stability and no impact on the stability of the vehicle-mounted robot's electronic control. Therefore, the damping bearing 100 provided in this solution significantly improves operational stability compared to other damping bearings used in vehicle-mounted robots.

[0051] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A damping bearing, characterized in that: include: The outer cover structure includes a bearing cover and a bearing base, wherein the bearing cover is movably mounted on the bearing base along its axial direction to form a mounting cavity with adjustable axial volume therebetween; an abutting structure, comprising a first abutting portion and a second abutting portion, wherein the first abutting portion and the second abutting portion are respectively mounted on one side of the bearing cover and the bearing base corresponding to the mounting cavity; and The inner ring structure includes an inner ring shaft and multiple balls. The end of the inner ring shaft corresponding to the mounting cavity is the mounting end. A retaining frame is provided on the mounting end. The multiple balls are evenly spaced and arranged on the retaining frame. The multiple balls are all in contact with the mounting end, the first abutting portion and the second abutting portion.

2. The damping bearing according to claim 1, wherein: The first abutting portion is fixedly mounted on the bearing cover, the second abutting portion is movably mounted on the bearing base along the axial direction of the bearing base, and an elastic member is provided between the second abutting portion and the bearing base.

3. The damping bearing according to claim 2, characterized in that: The first abutting portion and the second abutting portion are respectively configured as a first raceway ring and a second raceway ring, and the inner rings of the first raceway ring and the second raceway ring are both inclined to form two inclined end faces, the two inclined end faces are oppositely arranged, and the plurality of balls are in contact with the two inclined end faces.

4. The damping bearing according to claim 3, characterized in that: The elastic member is configured as a corrugated sheet, and the corrugated sheet is respectively formed with a plurality of first contact portions and a plurality of second contact portions corresponding to the bearing base and the second raceway ring. The plurality of first contact portions are fixedly mounted on the bearing base, and the plurality of second contact portions are all in contact with the end face of the second raceway ring.

5. The damping bearing according to claim 3, wherein: A circle of arc-shaped grooves is provided on the arc-shaped wall of the mounting end, and the plurality of balls are partially disposed in the arc-shaped grooves; The retaining frame is provided with a plurality of arc-shaped limiting grooves, and the plurality of balls are respectively installed inside the plurality of arc-shaped limiting grooves; The second raceway ring is arranged on the outer periphery of the retainer.

6. The damping bearing according to claim 1, wherein: The bearing base is provided with a circle of internal threads, and the bearing cover is provided with a circle of external threads corresponding to the internal threads; A screw block protruding from the end surface of the bearing cover is provided on the outer end surface facing away from the installation cavity.

7. The damping bearing according to claim 6, characterized in that: The bearing cover is provided with a through hole penetrating the screw block along its axial direction, and the through hole is connected to the mounting cavity; The inner ring shaft further includes a connecting end, the connecting end is arranged outside the mounting cavity at the through hole, and a connecting hole is further provided on the connecting end; and / or, The screwing block is configured as a hexagonal column.

8. The damping bearing according to claim 7, wherein: The mounting end and the connecting end are arranged in a stepped manner, and the cross section of the mounting end is larger than the cross section of the connecting end. The mounting end is partially arranged in the through hole.

9. The damping bearing according to claim 1, wherein: The outer peripheral wall of the bearing base is provided with a mounting ear.

10. A vehicle-mounted robot, characterized in that: It comprises a damping bearing as described in any one of claims 1 to 9.

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