Plate spring coupling structure, transmission shaft assembly and vehicle
By setting auxiliary bolts in the leaf spring coupling to reduce the movement and deformation of the sealing ring, the problem of oil leakage caused by easy failure of the sealing ring is solved, and higher stability and sealing effect are achieved.
Patent Information
- Application Number
- CN202520277644.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In existing leaf spring couplings, the sealing rings are prone to failure due to impact, leading to oil leakage problems.
By setting auxiliary bolts in the leaf spring coupling, the radial distance between the auxiliary bolts and the output workpiece is made smaller than that of the fixed bolts, thereby increasing rigidity, reducing the movement deformation of the intermediate block and the cover plate, and preventing the seal ring from failing.
It effectively prevents seal ring failure, avoids oil leakage in leaf spring couplings, and improves overall stability and sealing effect.
Smart Images
Figure CN223578589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to mechanical transmission technical field, especially a plate spring coupling structure, transmission shaft subassembly and vehicle. BACKGROUND
[0002] A coupling is a kind of mechanical parts used to connect two shafts in different mechanisms to rotate together to transmit torque;The coupling generally includes an input end and an output end, the input end is used to connect with the driving shaft, and the output end is used to connect with the driven shaft;In high-speed heavy-load power transmission, some couplings also have the functions of buffering, damping and improving the dynamic performance of shafting, for example, plate spring coupling, which is usually used in vehicles.
[0003] The plate spring coupling in the prior art is mostly connected together by a set of fastening bolts around the circumferential direction of the output end to connect the cover plate, the intermediate block and the input end together to ensure the stability of the plate spring coupling as a whole;However, the fastening bolts are usually far away from the position of the sealing ring, and the output end is impacted in all directions when working, which can easily cause the sealing ring sleeved on the outer wall of the output end to fail, and further cause the plate spring coupling to leak oil.
[0004] Therefore, how to prevent the sealing ring from failing and further prevent the plate spring coupling from leaking oil has become a technical problem to be solved in the field. UTILITY MODEL CONTENTS
[0005] The utility model aims at least to solve the technical problem of how to prevent the sealing ring from failing and further prevent the plate spring coupling from leaking oil. The purpose is realized by the following technical scheme:
[0006] In a first aspect, the utility model provides a plate spring coupling structure, comprising: an output end workpiece;Input end workpiece, fixedly connected with the output end workpiece, and the first sealing ring is arranged between the input end workpiece and the output end workpiece;Cover plate, fixedly connected with the output end workpiece, along the first direction, the output end workpiece is located between the input end workpiece and the cover plate, and the second sealing ring is arranged between the cover plate and the output end workpiece;Plate spring assembly, sleeved on the outer wall of the output end workpiece, and along the first direction, the plate spring assembly is located between the cover plate and the input end workpiece;The plate spring assembly comprises a plurality of intermediate blocks and a plurality of spring leaves, the plurality of intermediate blocks are arranged at intervals around the circumferential direction of the output end workpiece, and one spring leaf is arranged between every two adjacent intermediate blocks;Fixed assembly, comprising a plurality of fixed bolts, the plurality of fixed bolts are arranged at intervals around the circumferential direction of the output end workpiece, and each fixed bolt is sequentially arranged in the cover plate, the intermediate block and the input end workpiece;And auxiliary assembly, comprising a plurality of auxiliary bolts, the plurality of auxiliary bolts are arranged at intervals around the circumferential direction of the output end workpiece, and each auxiliary bolt is sequentially arranged in the cover plate, the intermediate block and the input end workpiece;And along the radial direction of the output end workpiece, the distance between any auxiliary bolt and the output end workpiece is less than the distance between any fixed bolt and the output end workpiece.
[0007] The plate spring coupling structure has the technical effects that, since the distance between any auxiliary bolt and the output workpiece in the radial direction of the output workpiece is smaller than the distance between any fixing bolt and the output workpiece, the distance between the auxiliary assembly and the sealing ring (including the first sealing ring and the second sealing ring) is closer relative to the fixing assembly, the rigidity of the plate spring coupling structure is improved, the deformation of the intermediate block and the cover plate of the plate spring coupling structure during operation is reduced, the stability of the plate spring coupling structure as a whole is improved, the sealing ring (including the first sealing ring and the second sealing ring) is prevented from being invalid, and the plate spring coupling structure is prevented from leaking oil.
[0008] In some embodiments of the utility model, the outer wall of the output workpiece is provided with a protrusion, and the cover plate is sleeved on the outer wall of the output workpiece. The second sealing ring is arranged between the cover plate and the protrusion in the first direction.
[0009] In some embodiments of the utility model, the nominal diameter of the auxiliary bolt is smaller than the nominal diameter of the fixing bolt.
[0010] In some embodiments of the utility model, the plurality of fixing bolts and the plurality of auxiliary bolts are arranged one by one in correspondence.
[0011] In some embodiments of the utility model, the plurality of fixing bolts are uniformly and spacedly arranged around the circumference of the output workpiece, and the plurality of auxiliary bolts are uniformly and spacedly arranged around the circumference of the output workpiece.
[0012] In some embodiments of the utility model, the plate spring coupling structure further comprises a fastening ring, which is sleeved on the outer wall of the plate spring assembly around the circumferential direction of the output workpiece, and the fastening ring is located between the cover plate and the input workpiece in the first direction.
[0013] In some embodiments of the utility model, the plate spring coupling structure further comprises an input end housing, which is fixedly connected with the input workpiece and located on the side of the input workpiece away from the cover plate in the first direction.
[0014] In some embodiments of the utility model, the input workpiece is a flange, and the output workpiece is a spline shaft.
[0015] In the second aspect, the utility model provides a transmission shaft assembly, which comprises any one of the plate spring coupling structures described above, and further comprises an input shaft fixedly connected with the input workpiece of the plate spring coupling structure, and an output shaft fixedly connected with the output workpiece of the plate spring coupling structure.
[0016] In the third aspect, the utility model provides a vehicle, which comprises an engine and the transmission shaft assembly described above, and the plate spring coupling structure further comprises an input end housing fixedly connected with the engine.
[0017] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS
[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments and are not meant to limit the present application. Furthermore, like reference numerals are intended to represent the same components throughout the drawings. In the drawings:
[0019] Figure 1 A sectional view of the plate spring coupling structure provided by the embodiments of the present application from one perspective;
[0020] Figure 2 A partial structure sectional view of the plate spring coupling structure provided by the embodiments of the present application from another perspective.
[0021] The reference numerals are as follows:
[0022] 100, plate spring coupling structure;
[0023] 1000, output end workpiece; 1100, protrusion;
[0024] 2000, input end workpiece;
[0025] 3000, cover plate;
[0026] 4100, intermediate block; 4200, spring piece;
[0027] 5100, fixing bolt;
[0028] 6100, auxiliary bolt;
[0029] 7000, fastening ring;
[0030] 8000, input end shell; 8100, threaded hole;
[0031] 9100, first sealing ring; 9200, second sealing ring;
[0032] a, first distance; b, second distance. DETAILED DESCRIPTION
[0033] Exemplary embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.
[0034] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and the like are to be construed to be inclusive (i.e., to include both instances of open ended terms and instances of terms limiting to a specific number) unless otherwise indicated as otherwise limited by context. The methods described herein can be implemented as a method, an apparatus, a system, a computer program product, computer-readable medium, computer program, or a combination thereof.
[0035] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
[0036] For ease of description, spatially relative terms can be used herein for the purpose of illustrating one element's or feature's relationship to another element or feature as shown in the figures. Such spatially relative terms include "internal", "external", "inward", "outward", "under", "below", "above", "on", "above", and the like. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device is inverted, then an element described as "below" or "beneath" another element or feature would then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
[0037] Figure 1 A sectional view of the plate spring coupling structure provided by the embodiment of the present application in one perspective view; Figure 2 A partial structure sectional view of the plate spring coupling structure provided by the embodiment of the present application in another perspective view; as Figure 1 And Figure 2As shown, the utility model embodiment provides a plate spring coupling structure 100, include: output end workpiece 1000, with output end workpiece 1000 fixed connection, be equipped with first sealing ring 9100 between input end workpiece 2000 and output end workpiece 1000, cover plate 3000 with output end workpiece 1000 fixed connection, along the first direction, the output end workpiece 1000 is located between input end workpiece 2000 and cover plate 3000, and be equipped with second sealing ring 9200 between cover plate 3000 and output end workpiece 1000, plate spring assembly, the outer wall of output end workpiece 1000 is set, and along the first direction, plate spring assembly is located between cover plate 3000 and input end workpiece 2000, plate spring assembly includes multiple intermediate blocks 4100 and multiple spring leaves 4200, multiple intermediate blocks 4100 are arranged around the circumference of output end workpiece 1000, and one spring leaf 4200 is arranged between every adjacent two intermediate blocks 4100, fixed assembly includes multiple fixed bolts 5100, multiple fixed bolts 5100 are arranged around the circumference of output end workpiece 1000, and every fixed bolt 5100 is sequentially arranged in cover plate 3000, intermediate block 4100 and input end workpiece 2000, and auxiliary assembly includes multiple auxiliary bolts 6100, multiple auxiliary bolts 6100 are arranged around the circumference of output end workpiece 1000, and every auxiliary bolt 6100 is sequentially arranged in cover plate 3000, intermediate block 4100 and input end workpiece 2000, and along the radial direction of output end workpiece 1000, the distance between any auxiliary bolt 6100 and output end workpiece 1000 is less than the distance between any fixed bolt 5100 and output end workpiece 1000.
[0038] In the embodiment, along the radial direction of output end workpiece 1000, the distance between any auxiliary bolt 6100 and output end workpiece 1000 (for the convenience of description, the distance is called first distance a) is less than the distance between any fixed bolt 5100 and output end workpiece 1000 (for the convenience of description, the distance is called second distance b), that is, relative to the fixed assembly, the distance between the auxiliary assembly and the sealing ring (including first sealing ring 9100 and second sealing ring 9200) is closer, as Figure 2 As shown, it can be obviously seen that a
[0039] Therefore, the plate spring coupling structure 100 can prevent the sealing ring (including first sealing ring 9100 and second sealing ring 9200) from failing, thereby preventing the plate spring coupling from leaking oil.
[0040] The plurality of middle blocks 4100 can be uniformly spaced around the circumference of the output end workpiece 1000, and it is easily understood that the plurality of spring leaves 4200 will also be uniformly spaced around the circumference of the output end workpiece 1000 on this basis. This arrangement can improve the uniformity of the leaf spring coupling structure 100 during assembly.
[0041] In addition, it should be noted that when assembling the fixing bolts 5100 and the auxiliary bolts 6100, the fixing bolts 5100 and the auxiliary bolts 6100 do not necessarily have to be arranged in each middle block 4100, and the specific arrangement can be determined according to actual working conditions and is not limited.
[0042] As shown in the drawings, according to an optional embodiment of the present application, the outer wall of the output end workpiece 1000 is provided with a protrusion 1100, and the cover plate 3000 is sleeved on the outer wall of the output end workpiece 1000. In the first direction, the second sealing ring 9200 is arranged between the cover plate 3000 and the protrusion 1100. Figure 1
[0043] In this embodiment, it is easily understood that this arrangement of the protrusion 1100 on the outer wall of the output end workpiece 1000 can facilitate the positioning of the cover plate 3000, the middle block 4100 and the input end workpiece 2000 in the first direction, and can also facilitate the assembly of the second sealing ring 9200.
[0044] Referring to the drawings, Figure 1 and Figure 2 According to an optional embodiment of the present application, the nominal diameter of the auxiliary bolt 6100 is smaller than the nominal diameter of the fixing bolt 5100.
[0045] In this embodiment, as shown in the drawings, Figure 2 it can be seen that for the middle block 4100 between any two spring leaves 4200, the space on which the bolt can be mounted (for the sake of description, this space will be referred to as the mounting space hereinafter) is smaller the closer it is to the output end workpiece 1000. Since the first distance a is smaller than the second distance b in the radial direction of the output end workpiece 1000, it can be seen that the mounting space of the auxiliary bolt 6100 is smaller than the mounting space of the fixing bolt 5100.
[0046] Therefore, in this embodiment, the nominal diameter of the auxiliary bolt 6100 is set to be smaller than the nominal diameter of the fixing bolt 5100, so as to facilitate the installation of the auxiliary bolt 6100, thereby preventing interference between the auxiliary bolt 6100 and the spring leaf 4200, and affecting the working efficiency of the leaf spring coupling structure 100.
[0047] When the installation space of the auxiliary bolt 6100 is too small, that is, the nominal diameter of the matched auxiliary bolt 6100 is too small, the connection stiffness of the plate spring coupling structure 100 as a whole can be improved by increasing the number of auxiliary bolts 6100, for example, auxiliary bolts 6100 can be arranged on all intermediate blocks 4100, so as to ensure the stability of the plate spring coupling structure 100 as a whole, thereby preventing the sealing ring (including the first sealing ring 9100 and the second sealing ring 9200) from failing, and further preventing the plate spring coupling from leaking oil.
[0048] In addition, in combination with the analysis in the above paragraph, it is easy to understand that if the nominal diameter of the matched auxiliary bolt 6100 is not very small, that is, the matched auxiliary bolt 6100 can provide sufficient connection stiffness, then the number of auxiliary bolts 6100 can be appropriately reduced to simplify the installation process of the auxiliary bolt 6100, thereby improving the convenience of assembly of the plate spring coupling structure 100 as a whole.
[0049] According to an optional embodiment of the utility model, the plurality of fixed bolts 5100 and the plurality of auxiliary bolts 6100 are one-to-one corresponding.
[0050] In the embodiment, the one-to-one corresponding arrangement of the plurality of fixed bolts 5100 and the plurality of auxiliary bolts 6100 can balance the stress of the plate spring coupling structure 100 as a whole, thereby ensuring the stability of the plate spring coupling structure 100 as a whole to a certain extent.
[0051] In addition, according to the above analysis of the specific number of fixed bolts 5100 and auxiliary bolts 6100, it is easy to understand that the one-to-one corresponding arrangement of the plurality of fixed bolts 5100 and the plurality of auxiliary bolts 6100 is only a specific description of one case, and the specific number of fixed bolts 5100 and auxiliary bolts 6100 needs to be determined according to actual working conditions, and is not limited.
[0052] According to an optional embodiment of the utility model, the plurality of fixed bolts 5100 are uniformly and spacedly arranged around the circumference of the output end workpiece 1000, and the plurality of auxiliary bolts 6100 are uniformly and spacedly arranged around the circumference of the output end workpiece 1000.
[0053] In the embodiment, it is easy to understand that the fixed bolts 5100 and the auxiliary bolts 6100 are uniformly and spacedly arranged around the circumference of the output end workpiece 1000, which can make the stress of the plate spring coupling structure 100 as a whole more balanced, thereby further ensuring the stability of the plate spring coupling structure 100 as a whole.
[0054] As Figure 1As shown, according to an optional embodiment of the utility model, the plate spring coupling structure 100 further comprises a fastening ring 7000, which is sleeved on the outer wall of the plate spring assembly along the circumferential direction of the output workpiece 1000, and is located between the cover plate 3000 and the input workpiece 2000 along the first direction.
[0055] In the embodiment, the positioning of the plate spring assembly and the output workpiece 1000 along the circumferential direction of the output workpiece 1000 is realized due to the presence of the fastening ring 7000, thereby ensuring the stability of the plate spring coupling structure 100 as a whole.
[0056] In addition, the two ends of the fastening ring 7000 can abut against the cover plate 3000 and the input workpiece 2000 respectively along the first direction, thereby improving the stability of the fastening ring 7000 in various directions.
[0057] Reference Figure 1 and Figure 2 According to an optional embodiment of the utility model, the plate spring coupling structure 100 further comprises an input end shell 8000, which is fixedly connected with the input workpiece 2000 and is located on the side of the input workpiece 2000 away from the cover plate 3000 along the first direction.
[0058] In the embodiment, it is easy to understand that since the plate spring coupling structure 100 finally needs to be connected with a power device, the input end shell 8000 is arranged on the side of the input workpiece 2000 away from the cover plate 3000, so as to facilitate the assembly of the plate spring coupling structure 100 and the power device.
[0059] Reference Figure 2 Specifically, a threaded hole 8100 can be arranged on the input end shell 8000, and during assembly, a screw can be passed through the threaded hole 8100 arranged on the input end shell 8000 and a threaded hole arranged on the power device, so as to realize the connection of the power device and the plate spring coupling structure 100.
[0060] It should be noted that the above-mentioned method of connecting the input end shell 8000 and the power device through a screw is only an example, and the specific assembly method needs to be determined according to the actual working condition requirements, and is not limited.
[0061] According to an optional embodiment of the utility model, the input workpiece 2000 is a flange, and the output workpiece 1000 is a spline shaft.
[0062] In the embodiment, the input end workpiece 2000 is selected as a flange, and the output end workpiece 1000 is selected as a spline shaft, which is only an example of a feasible scheme, and the specific structure of the input end workpiece 2000 and the output end workpiece 1000 is determined according to actual working conditions, and is not limited.
[0063] The utility model embodiment further provides a kind of transmission shaft assembly, including the plate spring coupling structure 100 of any one described above, and transmission shaft assembly further include: input shaft, with the input end workpiece 2000 of plate spring coupling structure 100 fixed connection;And output shaft, with the output end workpiece 1000 of plate spring coupling structure 100 fixed connection.
[0064] In the embodiment, the beneficial effects of the transmission shaft assembly are the same as those of any one of the plate spring coupling structure 100 described above, which can prevent the sealing ring (including the first sealing ring 9100 and the second sealing ring 9200) from failing, thereby preventing the plate spring coupling from leaking oil, and details are not repeated here.
[0065] The utility model embodiment further provides a kind of vehicle, including engine and the transmission shaft assembly described above, and plate spring coupling structure 100 further include input end shell 8000, and input end shell 8000 is fixedly connected with engine.
[0066] In the embodiment, the beneficial effects of the vehicle are the same as those of the transmission shaft assembly described above, which can prevent the sealing ring (including the first sealing ring 9100 and the second sealing ring 9200) from failing, thereby preventing the plate spring coupling from leaking oil, and details are not repeated here.
[0067] As for the setting of the input end shell 8000, as described above, in the embodiment, the presence of the input end shell 8000 facilitates the assembly of the engine and the plate spring coupling structure 100, thereby facilitating the assembly of the engine and the transmission shaft assembly.
[0068] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A plate spring coupling structure characterized by comprising: The plate spring coupling structure comprises: an output workpiece; an input workpiece fixedly connected with the output workpiece, a first sealing ring being arranged between the input workpiece and the output workpiece; a cover plate fixedly connected with the output workpiece, the output workpiece being located between the input workpiece and the cover plate along a first direction, and a second sealing ring being arranged between the cover plate and the output workpiece; a plate spring assembly sleeved on an outer wall of the output workpiece and located between the cover plate and the input workpiece along the first direction, the plate spring assembly comprising a plurality of intermediate blocks and a plurality of spring leaves, the intermediate blocks being arranged at intervals around the circumference of the output workpiece, and one spring leaf being arranged between each pair of adjacent intermediate blocks; a fixing assembly comprising a plurality of fixing bolts, the fixing bolts being arranged at intervals around the circumference of the output workpiece, and each fixing bolt being sequentially arranged through the cover plate, the intermediate blocks and the input workpiece; and an auxiliary assembly comprising a plurality of auxiliary bolts, the auxiliary bolts being arranged at intervals around the circumference of the output workpiece, each auxiliary bolt being sequentially arranged through the cover plate, the intermediate blocks and the input workpiece, and the distance between any auxiliary bolt and the output workpiece being smaller than the distance between any fixing bolt and the output workpiece along the radial direction of the output workpiece.
2. The plate spring coupling structure according to claim 1, characterized by The outer wall of the output workpiece is provided with a protrusion, and the cover plate is sleeved on the outer wall of the output workpiece, the second sealing ring being arranged between the cover plate and the protrusion along the first direction.
3. The plate spring coupling structure according to claim 1, characterized by The nominal diameter of the auxiliary bolt is smaller than the nominal diameter of the fixing bolt.
4. The plate spring coupling structure according to claim 1, characterized by The fixing bolts and the auxiliary bolts are arranged one by one.
5. The plate spring coupling structure according to claim 1, characterized by The fixing bolts and the auxiliary bolts are uniformly arranged at intervals around the circumference of the output workpiece.
6. The plate spring coupling structure according to claim 1, characterized by The plate spring coupling structure further comprises a fastening ring sleeved on the outer wall of the plate spring assembly along the circumferential direction of the output workpiece, and located between the cover plate and the input workpiece along the first direction.
7. The plate spring coupling structure according to claim 1, characterized by The plate spring coupling structure further comprises an input end housing fixedly connected with the input workpiece and located on the side of the input workpiece away from the cover plate along the first direction.
8. The plate spring coupling structure according to any one of claims 1 to 7, characterized in that, The input workpiece is a flange, and the output workpiece is a spline shaft.
9. A propeller shaft assembly characterized by, The transmission shaft assembly further comprises: an input shaft fixedly connected with the input workpiece of the plate spring coupling structure; and an output shaft fixedly connected with the output workpiece of the plate spring coupling structure.
10. A vehicle characterized by comprising: The plate spring coupling structure further comprises an input end housing fixedly connected with the engine. The plate spring coupling structure further comprises an input end housing fixedly connected with the engine.