CN115929827A - Motor spherical hinge with small-diameter shaft rigidity ratio - Google Patents
Motor spherical hinge with small-diameter shaft rigidity ratio Download PDFInfo
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- CN115929827A CN115929827A CN202211419693.9A CN202211419693A CN115929827A CN 115929827 A CN115929827 A CN 115929827A CN 202211419693 A CN202211419693 A CN 202211419693A CN 115929827 A CN115929827 A CN 115929827A
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- spherical hinge
- side wall
- groove
- wall
- rigidity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/3828—End stop features or buffering
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
- F16F1/393—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type with spherical or conical sleeves
Abstract
The invention relates to the field of vibration reduction components of rail vehicles, and particularly provides a motor spherical hinge with a small diameter shaft rigidity ratio, which comprises a core shaft, a rubber body and an outer sleeve, wherein the outer sleeve comprises two sections, an installation through groove is formed between the two sections of outer sleeves, a rigidity adjusting groove is arranged on the core shaft, and the middle part of the rubber body comprises an accommodating through groove communicated between the installation through groove and the rigidity adjusting groove; a hard stop which penetrates through the accommodating through groove and extends into the rigidity adjusting groove is arranged in the mounting through groove, and an adjusting gap is formed between the hard stop and the groove wall of the rigidity adjusting groove; the motor spherical hinge is an integrated structure formed by vulcanizing the core shaft, the rubber body and the outer sleeve, and the hard stop catch is installed in the vulcanized rubber spherical hinge through press fitting. The motor spherical hinge has a simple structure, is convenient to operate, can adjust the rigidity performance of the motor spherical hinge in the radial direction and the axial direction by setting the width of the adjusting gap so as to reduce the radial-axial rigidity ratio of the motor spherical hinge, improve the use reliability of a vulcanized body of the motor spherical hinge and provide better fatigue performance.
Description
Technical Field
The invention relates to the technical field of vibration reduction components of railway vehicles, in particular to a motor spherical hinge with a small diameter shaft rigidity ratio.
Background
The motor ball hinge is used as a common ball hinge rubber-metal composite elastic element, is usually used in a motor suspension system of a railway vehicle, is an important part for fixing a motor on a bogie, can absorb and attenuate vibration of the vehicle in the vertical direction, the axial direction and the longitudinal direction, and simultaneously plays a role in flexible connection and positioning. The motor spherical hinge is usually formed by vulcanizing metal and rubber, can provide axial and longitudinal rigidity, realizes axial and longitudinal relative displacement between the motor and a framework, and ensures the running stability and curve trafficability of a vehicle. In the prior art, the following patents relate to spherical hinge type rubber metal composite elastic elements:
1. the patent number is '201711076322.4', the patent name is 'method for improving fatigue reliability of axle box positioning node and axle box positioning node', the axle box positioning node comprises a mandrel, a rubber layer, a split outer sleeve and an integral outer sleeve, the free surface of the rubber layer can be increased on the basis of ensuring the adhesive force between the rubber layer and the mandrel and between the rubber layer and the split outer sleeve, so that the internal stress of the rubber layer is timely and greatly released when the axle box positioning node is loaded, cracks caused by stress concentration of rubber are avoided, and the service life of a product is prolonged.
2. The invention patent with the patent number of '201410138755.8' and the patent name of 'a large-curvature spherical surface multilayer split type rubber metal joint' comprises a metal outer sleeve, a metal spacer bush, an elastic rubber body and a metal mandrel which are vulcanized together, wherein the elastic rubber body is divided into a plurality of layers and a plurality of segments by the metal spacer bush in the vulcanization process, the split seam positions of the metal outer sleeve, the metal spacer bush and the elastic rubber body are kept consistent, and the rubber metal joint has good durability, has larger radial rigidity and axial rigidity and smaller deflection rigidity and torsion rigidity, and can be widely applied to the suspension field of railway vehicles.
However, in the prior art, the metal rubber shock absorbing member has a large radial stiffness and a small axial stiffness, and has limited use reliability and fatigue performance, so that the problem that needs to be solved is to design a metal rubber motor ball hinge with a small axial ratio.
Disclosure of Invention
The invention provides the motor spherical hinge with the small diameter-axis rigidity ratio, and aims to solve the problems that the radial rigidity performance and the axial rigidity performance of the motor spherical hinge can be adjusted and the diameter-axis rigidity ratio of the motor spherical hinge can be reduced through the adjusting gap between the hard stop and the mandrel rigidity adjusting groove, and the reliability and the fatigue performance of the motor spherical hinge are improved.
In order to achieve the purpose, the invention provides the following technical scheme: a motor spherical hinge with small diameter shaft rigidity ratio comprises a core shaft, a rubber body and an outer sleeve, wherein the rubber body is vulcanized between the core shaft and the outer sleeve to enable the motor spherical hinge to be an integrated vulcanization structure, the outer sleeve comprises two sections, and an installation through groove is formed between the two sections of the outer sleeve; the mandrel is provided with a rigidity adjusting groove communicated with the installation through groove; the middle part of the rubber body comprises an accommodating through groove communicated between the mounting through groove and the rigidity adjusting groove; the installation is led to the inslot and is equipped with the hard backstop that passes and hold logical groove and extend to in the rigidity adjustment groove, including adjusting the clearance between the cell wall in hard backstop and rigidity adjustment groove, adjusts motor ball pivot rigidity performance in radial and axial through setting up the width that adjusts the clearance and in order to reduce motor ball pivot the radial-axis rigidity ratio.
Preferably, the rigidity adjusting groove comprises a first bottom wall and a first side wall; the side wall I is connected between the bottom wall I and the rubber body and evenly distributed on two sides of a radial central plane S1 of the motor spherical hinge, and is of a conical wall structure which is far away from the radial central plane S1 from one side end of the bottom wall towards the direction of the rubber body; the first bottom wall is parallel to the axial center plane S2 of the motor spherical hinge.
Preferably, the hard stop comprises an installation platform and a stop platform, and the installation platform is positioned in the installation through groove and fixed on the outer sleeve; the stop table penetrates through the accommodating through groove and extends into the rigidity adjusting groove, and an adjusting gap is formed between the stop table and the first bottom wall and the first side wall of the rigidity adjusting groove.
Preferably, the stopping table comprises a second bottom wall parallel to the axial central plane S2 of the motor spherical hinge and second side walls uniformly distributed on two sides of the radial central plane S1 and connected with the second bottom wall; the side wall II is a conical wall structure which is arranged from the side end of the bottom wall II to the direction far away from the radial central plane S1 in the direction of the outer sleeve; the adjusting gap comprises a first gap between the first bottom wall and the second bottom wall and a second gap between the first side wall and the second side wall.
Preferably, an included angle α between the first side wall and the axial central plane S2 is larger than an included angle β between the second side wall and the axial central plane S2, and the width of the second gap gradually increases from the outside to the inside toward the axial central plane S2.
Preferably, the bottom wall I and the side wall I are respectively vulcanized with a bottom rubber coating and a side rubber coating, and the bottom rubber coating and the side rubber coating are of an integrated structure; the bottom rubber molded surface of the bottom rubber encapsulation is of a straight surface structure arranged in parallel with the axial central surface S2, and the side rubber molded surface of the side rubber encapsulation is of an inclined wall structure arranged from the side end of the bottom rubber molded surface to the direction of the rubber body far away from the radial central surface S1; an included angle lambda between the lateral rubber molded surface and the axial center surface S2 is larger than an included angle alpha between the first side wall and the axial center surface S2.
Preferably, the inner wall of the rubber body comprises a vertical section and an inclined section, and the upper end of the second side wall of the hard stop comprises a vertical wall; the vertical section is attached to the vertical wall, and the inclined section is connected with the first side wall and forms a third gap with gradually increasing width from outside to inside with the second side wall.
Preferably, when the motor is in spherical hinge loading, the side wall II is firstly contacted with the side wall I, and then the bottom wall II is contacted with the bottom wall I; and when the second side wall contacts the first side wall, the midpoint D1 of the second side wall contacts the vertex D1 of the first side wall.
Preferably, the thickness of the side rubber encapsulation is greater than the thickness of the bottom rubber encapsulation, and the thickness of the side rubber encapsulation gradually decreases from the outside to the inside towards the thickness of the bottom rubber encapsulation.
Preferably, the inner side of the outer sleeve is provided with a mounting step, the mounting table of the hard stop comprises a mounting side edge matched with the mounting step, and the hard stop is pressed on the mounting step through the mounting side edge; after the hard stop is installed, the length H1 between the outer ends of the two outer sleeves is smaller than the axial length H2 of the mandrel.
The invention has the beneficial effects that:
1. according to the invention, the installation through groove, the containing through groove and the rigidity adjusting groove are respectively arranged between the two sections of outer sleeves, on the mandrel and on the rubber body, and the hard stop is arranged in the installation through groove, the containing through groove and the rigidity adjusting groove.
2. An adjusting gap is formed between the hard stop and the mandrel, and the width of the adjusting gap is set, so that the rigidity performance of the motor spherical hinge in the radial direction and the axial direction can be adjusted, the radial-axial rigidity ratio of the motor spherical hinge is reduced, and the use stability of the motor spherical hinge is improved.
3. Motor ball pivot is by overcoat, dabber and the vulcanization formula structure that becomes one piece of rubber body, and hard backstop is installed to the installation through the groove again through the pressure equipment mode, hold logical groove and rigidity control inslot, and hard backstop is installed through the mode of follow-up equipment promptly, need not through the vulcanization shaping, simple structure, convenient operation.
Drawings
Fig. 1 is a schematic overall structure diagram of a motor spherical hinge provided in an embodiment of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
Reference numerals: 1. a mandrel; 2. a rubber body; 3. a jacket; 4. a rigidity adjusting groove; 5. a hard stop; 6. a first bottom wall; 7. a first side wall; 8. an installation table; 9. a stop table; 10. a second bottom wall; 11. a second side wall; 12. a first gap; 13. a second gap; 14. rubber coating of the bottom; 15. rubber coating of the side part; 16. a bottom rubber profile; 17. a side rubber profile; 18. a vertical section; 19. an inclined section; 20. a vertical wall; 21. a third gap; 22. mounting a ladder; 23. the skirt is mounted.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings 1-2 and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention.
A motor spherical hinge with a small shaft stiffness ratio is shown in figure 1 and comprises a mandrel 1, a rubber body 2 and a jacket 3, wherein the rubber body 2 is vulcanized between the mandrel 1 and the jacket 3, and the motor spherical hinge is of an integrated vulcanization structure. As shown in fig. 1, the outer sleeve 3 comprises two sections, an installation through groove is formed between the two sections of outer sleeve 3, the mandrel 1 is provided with a rigidity adjusting groove 4 communicated with the installation through groove, and the middle part of the rubber body 2 comprises an accommodating through groove communicated between the installation through groove and the rigidity adjusting groove 4; the installation is led to the groove, is held to lead to and is equipped with hard backstop 5 in groove and the rigidity adjustment groove, and hard backstop 5 is located the installation and leads to the inslot and passes and hold logical groove and extend to in the rigidity adjustment groove 4.
As shown in fig. 2, the hard stop 5 comprises an installation platform 8 and a stop platform 9, wherein the installation platform 8 is positioned in the installation through groove and fixed on the outer sleeve 3; the stop table 9 penetrates through the accommodating through groove and extends into the rigidity adjusting groove 4; an installation step 22 is arranged on the inner side of the outer sleeve 3, an installation side edge 23 matched with the installation step 22 is arranged on the installation platform 8 of the hard stop 5, and the hard stop 5 is pressed on the installation step 22 in an interference manner through the installation side edge 23; after the hard stop 5 is installed, the length H1 between the outer end parts of the two outer sleeves 3 is smaller than the axial length H2 of the mandrel 1, so that the bearing capacity of the motor spherical hinge is ensured, the radial rigidity is reduced, and the radial-axial rigidity ratio of the motor spherical hinge is reduced.
As shown in fig. 1, the hard stop 5 and the slot wall of the stiffness adjusting slot 4 include an adjusting gap therebetween, as shown in fig. 2, the slot wall of the stiffness adjusting slot 4 includes a first bottom wall 6 and a first side wall 7, and an adjusting gap is formed between the stop platform 9 and the first bottom wall 6 and the first side wall 7; the side wall I7 is connected between the bottom wall I6 and the rubber body 2 and is uniformly distributed on two sides of a radial central plane S1 of the motor spherical hinge; the stop table 9 comprises a second bottom wall 10 and a second side wall 11; as shown in FIG. 2, the adjusting gap comprises a gap I12 between the bottom wall I6 and the bottom wall II 10 and a gap II 13 between the side wall I7 and the side wall II 11, and by setting the widths of the gap I12 and the gap II 13, the rigidity performance of the motor ball hinge in the radial direction and the axial direction can be adjusted, and the radial-axial rigidity ratio of the motor ball hinge is reduced.
As shown in fig. 2, the first side wall 7 is a tapered wall structure which is arranged away from the radial central plane S1 from the side end of the first bottom wall 6 toward the rubber body 2, and the first bottom wall 6 is arranged in parallel with the axial central plane S2 of the motor spherical hinge; the second side walls 11 are uniformly distributed on two sides of the radial central plane S1 and connected with the second bottom wall 10, the second side walls 11 are of conical wall structures which are arranged from the side ends of the second bottom wall 10 to the direction of the outer sleeve 3 and far away from the radial central plane S1, and the second bottom wall 10 is arranged in parallel with the axial central plane S2 of the motor spherical hinge; the bottom wall I6 and the side wall I7 are respectively vulcanized with a bottom rubber coating 14 and a side rubber coating 15, the bottom rubber coating 14 and the side rubber coating 15 are of an integrated structure, a bottom rubber profile 16 of the bottom rubber coating 14 is of a straight-surface structure arranged in parallel with the axial center plane S2, and a side rubber profile 17 of the side rubber coating 15 is of an inclined-wall structure arranged from the side end of the bottom rubber profile 16 to the direction of the rubber body 2 away from the radial center plane S1.
The first bottom wall 6 and the second bottom wall 10 are both arranged in parallel with the axial center face S2, the bottom rubber molded surface 16 of the bottom rubber coating 14 is of a straight surface structure arranged in parallel with the axial center face S2, when the hard stopping block 5 is in contact with the mandrel 1 and stops blocking, the second bottom wall 10 is in contact with the bottom rubber coating 14 on the first bottom wall 6, stress concentration between the second bottom wall 10 and the bottom rubber coating 14 and between the second bottom wall 6 and the first bottom wall 6 can be prevented, namely direct contact between the hard stopping block 5 of the metal structure and the mandrel 1 of the metal structure is prevented, stress concentration of the bottom rubber coating 14 is prevented, and the service life of a product can be prolonged.
The first side wall 7 and the second side wall 11 are both conical wall structures, the side rubber molded surface 17 of the side rubber coating 15 is in a conical wall structure, when the motor spherical hinge is loaded, so that the first side wall 7 is in contact with the second side wall 11, the second side wall 11 of the conical wall structure can be gradually attached to the side rubber coating 15, the axial rigidity is prevented from suddenly rising when the first side wall 7 is in contact with the second side wall 11, the use comfort of the motor spherical hinge is improved, and the radial-axial rigidity ratio is reduced.
As shown in fig. 1 and 2, an included angle α between the first side wall 7 and the axial central plane S2 is greater than an included angle β between the second side wall 11 and the axial central plane S2, and the width of the second gap 13 gradually increases from the outside to the inside, that is, from the rubber body 2 to the axial central plane S2, so that when the first side wall 7 contacts the second side wall 11, the second side wall 11 gradually approaches the rubber coating 15 on the side portion, and the rapid increase of the rigidity is avoided; meanwhile, the width of the second gap 13 is gradually increased from the outside to the inside, so that when the first side wall 7 is contacted with the second side wall 11, the upper part of the second side wall 11 is firstly contacted with the first side wall 7, and the lower part of the second side wall 11 is gradually contacted with the first side wall 7, and further, the smooth transition of the axial rigidity is further ensured.
An included angle lambda between the lateral rubber molded surface 17 and the axial central surface S2 is larger than an included angle alpha between the first side wall 7 and the axial central surface S2, meanwhile, the thickness of the lateral rubber coating 15 is larger than that of the bottom rubber coating 14, and the thickness of the lateral rubber coating 15 is gradually reduced from outside to inside towards the thickness of the bottom rubber coating 14; when the first side wall 7 is contacted with the second side wall 11, the second side wall 11 is firstly contacted with the thicker upper part of the side rubber coating 15, the rigidity is still lower, and then is contacted with the thinner lower part of the side rubber coating 15, the rigidity is gradually increased, and the rigidity is fully prevented from being increased sharply when the first side wall 7 is contacted with the second side wall 11.
As shown in fig. 2, the inner wall of the rubber body 2 comprises a vertical section 18 and an inclined section 19, and the upper end of the second side wall 11 of the hard stop 5 comprises a vertical wall 20; the vertical section 18 is attached to the vertical wall 20 so as to ensure the overall rigidity of the motor spherical hinge and the installation stability of the motor spherical hinge; the inclined section 19 is connected with the first side wall 7, a gap third 21 with the width gradually increasing from the outside to the inside is formed between the inclined section 19 and the second side wall 11, and when the motor spherical hinge is loaded and pressed down, the hard stop 5 is gradually contacted with the inclined section 19 through the second side wall 11, so that the rigidity can be ensured to be in smooth transition to a certain extent, and the rigidity is prevented from rapidly rising.
When the motor is in spherical hinge loading, the second side wall 11 is firstly contacted with the first side wall 7, and the second bottom wall 10 is then contacted with the first bottom wall 6; when the second side wall 11 contacts with the first side wall 7, the midpoint D1 of the second side wall 11 contacts with the vertex D1 of the first side wall 7; when the second side wall 11 is in contact with the first side wall 7, the axial direction of the motor spherical hinge does shearing motion, when the second side wall 11 is in contact with the first side wall 7, if the contact point is the outer side of the point D1, namely the side close to the rubber body 2, the contact surface between the second side wall 11 and the first side wall 7 is too small, the motor spherical hinge has the risk of deviation in the axial direction, the axial stability is poor, and if the contact point is the inner side of the point D1, namely the side close to the mandrel 1, the contact surface between the second side wall 11 and the first side wall 7 is too large, and the rigidity is too large; the middle point D1 of the second side wall 11 is firstly contacted with the top point D1 of the first side wall 7, so that proper axial rigidity can be obtained, the radial-axial rigidity ratio of the motor spherical hinge is reduced, and the stability and the reliability of axial bearing are ensured.
While embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be taken as limiting the invention. Variations, modifications, substitutions and changes to the embodiments described above will occur to those skilled in the art and are intended to be within the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A motor spherical hinge with a small diameter shaft rigidity ratio comprises a mandrel (1), a rubber body (2) and a jacket (3), wherein the rubber body (2) is vulcanized between the mandrel (1) and the jacket (3) to enable the motor spherical hinge to be an integrated vulcanization structure, and the motor spherical hinge is characterized in that the jacket (3) comprises two sections, and an installation through groove is formed between the two sections of the jacket (3); the mandrel (1) is provided with a rigidity adjusting groove (4) communicated with the installation through groove; the middle part of the rubber body (2) comprises an accommodating through groove communicated between the mounting through groove and the rigidity adjusting groove (4); the mounting through groove is internally provided with a hard stop (5) which penetrates through the accommodating through groove and extends into the rigidity adjusting groove (4), an adjusting gap is formed between the hard stop (5) and the groove wall of the rigidity adjusting groove (4), and the radial-axial rigidity ratio of the motor spherical hinge is reduced by adjusting the rigidity performance of the motor spherical hinge in the radial direction and the axial direction by setting the width of the adjusting gap.
2. The motor spherical hinge with small diameter shaft stiffness ratio according to claim 1, characterized in that the stiffness adjusting groove (4) comprises a first bottom wall (6) and a first side wall (7); the first side wall (7) is connected between the first bottom wall (6) and the rubber body (2) and uniformly distributed on two sides of a radial central plane S1 of the motor spherical hinge, and the first side wall (7) is of a conical wall structure which is far away from the radial central plane S1 from the side end of the first bottom wall (6) towards the direction of the rubber body (2); the first bottom wall (6) is arranged in parallel with an axial center plane S2 of the motor spherical hinge.
3. The motor spherical hinge with the small diameter shaft rigidity ratio as claimed in claim 2, characterized in that the hard stop (5) comprises a mounting table (8) and a stop table (9), the mounting table (8) is positioned in the mounting through groove and fixed on the outer sleeve (3); the stop table (9) penetrates through the accommodating through groove and extends into the rigidity adjusting groove (4), and an adjusting gap is formed between the stop table (9) and the bottom wall I (6) and the side wall I (7) of the rigidity adjusting groove (4).
4. The motor spherical hinge with small radial-to-axial stiffness ratio as claimed in claim 3, wherein the stop table (9) comprises a second bottom wall (10) arranged in parallel with the axial central plane S2 of the motor spherical hinge and a second side wall (11) which is distributed on both sides of the radial central plane S1 and connected with the second bottom wall (10); the side wall II (11) is a conical wall structure which is arranged from the side end of the bottom wall II (10) to the direction of the outer sleeve (3) and is far away from the radial central plane S1; the adjusting gap comprises a first gap (12) between the first bottom wall (6) and the second bottom wall (10) and a second gap (13) between the first side wall (7) and the second side wall (11).
5. The motor spherical hinge with the small diameter shaft stiffness ratio as claimed in claim 4, wherein an included angle α between the first side wall (7) and the axial center plane S2 is larger than an included angle β between the second side wall (11) and the axial center plane S2, and the width of the second gap (13) gradually increases from the outside to the inside towards the axial center plane S2.
6. The motor spherical hinge with the small diameter shaft rigidity ratio is characterized in that the bottom wall I (6) and the side wall I (7) are respectively vulcanized with a bottom rubber coating (14) and a side rubber coating (15), and the bottom rubber coating (14) and the side rubber coating (15) are of an integrated structure; the bottom rubber molded surface (16) of the bottom rubber coating (14) is of a straight surface structure arranged in parallel with the axial central surface S2, and the side rubber molded surface (17) of the side rubber coating (15) is of an inclined wall structure arranged from the side end of the bottom rubber molded surface (16) to the direction of the rubber body (2) and far away from the radial central surface S1; an included angle lambda between the lateral rubber molded surface (17) and the axial central surface S2 is larger than an included angle alpha between the first side wall (7) and the axial central surface S2.
7. The motor spherical hinge with the small diameter shaft rigidity ratio as claimed in claim 6, characterized in that the inner wall of the rubber body (2) comprises a vertical section (18) and an inclined section (19), and the upper end of the second side wall (11) of the hard stop (5) comprises a vertical wall (20); the vertical section (18) is attached to the vertical wall (20), and the inclined section (19) is connected with the first side wall (7) and forms a third gap (21) with gradually increasing width from outside to inside with the second side wall (11).
8. The motor spherical hinge with the small diameter shaft rigidity ratio according to any one of claims 1 to 7, characterized in that when the motor spherical hinge is loaded, the second side wall (11) contacts with the first side wall (7) first, and then the second bottom wall (10) contacts with the first bottom wall (6); and when the side wall II (11) is contacted with the side wall I (7), the midpoint D1 of the side wall II (11) is firstly contacted with the vertex D1 of the side wall I (7).
9. The motor spherical hinge with the small shaft stiffness ratio as claimed in claim 8, wherein the thickness of the side rubber encapsulation (15) is larger than that of the bottom rubber encapsulation (14), and the thickness of the side rubber encapsulation (15) is gradually reduced from outside to inside towards the thickness of the bottom rubber encapsulation (14).
10. The motor spherical hinge with the small diameter shaft rigidity ratio as claimed in claim 9, characterized in that the inner side of the outer sleeve (3) is provided with a mounting step (22), the mounting platform (8) of the hard stop (5) comprises a mounting side edge (23) matched with the mounting step (22), and the hard stop (5) is pressed on the mounting step (22) through the mounting side edge (23); after the hard stop (5) is installed, the length H1 between the outer end parts of the two outer sleeves (3) is smaller than the axial length H2 of the mandrel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419693.9A CN115929827A (en) | 2022-11-14 | 2022-11-14 | Motor spherical hinge with small-diameter shaft rigidity ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211419693.9A CN115929827A (en) | 2022-11-14 | 2022-11-14 | Motor spherical hinge with small-diameter shaft rigidity ratio |
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| Publication Number | Publication Date |
|---|---|
| CN115929827A true CN115929827A (en) | 2023-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211419693.9A Pending CN115929827A (en) | 2022-11-14 | 2022-11-14 | Motor spherical hinge with small-diameter shaft rigidity ratio |
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| Country | Link |
|---|---|
| CN (1) | CN115929827A (en) |
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2022
- 2022-11-14 CN CN202211419693.9A patent/CN115929827A/en active Pending
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