Inner pipe connection transmission structure

Abstract

The invention belongs to the technical field of mechanical transmission, and discloses an inner pipe connection transmission structure which comprises a pipe wall, a connecting piece, a matching piece and a fixing piece, a fixing hole is formed in the pipe wall, the connecting piece is arranged in the pipe wall and comprises a force transmission part and an elastic part, the elastic part can reduce vibration and impact, and the matching piece can be matched with the force transmission part. Vibration and impact energy generated in the transmission process can be absorbed and buffered, damage is avoided, the force transmission part is embedded in the groove of the elastic part and used for being connected with the transmission end of the transmission mechanism, the matching piece is arranged between the pipe wall and the elastic part in the circumferential direction of the pipe wall, the inner ring of the matching piece abuts against the periphery of the elastic part, and therefore the matching piece can be connected with the transmission end of the transmission mechanism. The outer ring of the matching piece abuts against the inner circumference of the pipe wall, the matching piece is provided with the fixing groove, one end of the fixing piece is clamped with the fixing groove, the other end of the fixing piece is clamped with the fixing hole, high torque is reliably transmitted, various application scenes with high torque requirements are met, and the reliability and stability of the connecting structure are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical transmission, and in particular to an inner tube connection transmission structure. Background Art

[0002] In mechanical transmission systems, it is often necessary to reliably connect various components and achieve high torque transmission to ensure the normal operation of the equipment.

[0003] For example, certain components in industrial equipment, automotive transmission systems, and the aerospace sector all place extremely high demands on the strength and stability of the connection structure. Currently, common internal tube connection transmission structures primarily consist of bolted and welded connections. Bolted connections are prone to failure due to excessive force during high-torque transmission, while welded connections can generate thermal stress during the welding process, leading to material deformation and compromising the reliability and stability of the connection structure. Furthermore, during transmission, the connection structure itself can generate vibration and impact, potentially damaging it.

[0004] Therefore, an inner tube connection transmission structure is urgently needed to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an inner tube connection transmission structure that can reduce vibration and impact, absorb and buffer the vibration and impact energy generated during the transmission process, avoid structural damage, and, by pressing the fixing parts and assembling the mating parts, the tube wall can reliably transmit high torque, thereby improving the reliability and stability of the connection structure.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] The inner tube connection transmission structure includes:

[0008] A pipe wall, wherein the pipe wall is provided with a fixing hole;

[0009] A connecting member, the connecting member is arranged in the tube wall, the connecting member includes a force transmission portion and an elastic portion, the elastic portion is provided with a groove, the force transmission portion is embedded in the groove, and the force transmission portion is used to connect with the transmission end of the transmission mechanism;

[0010] a fitting, arranged between the tube wall and the elastic portion along the circumferential direction of the tube wall, wherein the inner ring of the fitting abuts against the outer circumference of the elastic portion, and the outer ring of the fitting abuts against the inner circumference of the tube wall, and the fitting is provided with a fixing groove;

[0011] A fixing member, one end of which is clamped to the fixing groove, and the other end of which is clamped to the fixing hole.

[0012] Preferably, the fixing member includes two fixing parts and a middle part, the two fixing parts are respectively connected to the two ends of the middle part, along the circumferential direction of the tube wall, the width of the fixing part is greater than the width of the middle part, the middle part is located at the opening of the fixing groove, and the two fixing parts can be respectively clamped in the fixing groove and the fixing hole.

[0013] Preferably, the fixing groove includes an opening portion and a main body portion, the width of the main body portion is greater than the width of the opening portion, the main body portion is configured to be snap-fitted with the fixing portion, and the opening portion is configured to be slidingly snap-fitted with the middle portion.

[0014] Preferably, the longitudinal section of the fixing groove is in a convex shape.

[0015] Preferably, there are multiple fixing members, multiple fixing grooves and multiple fixing holes. Along the circumferential direction of the tube wall, multiple fixing holes are arranged at intervals and correspond one to one with multiple fixing grooves. Multiple fixing members are clamped in the corresponding fixing holes and fixing grooves.

[0016] Preferably, a protrusion is provided on the outer periphery of the force transmission part, the inner side wall of the groove has a fixing part, the protrusion is clamped on the inner side of the fixing part, the force transmission part has a mounting hole, the cross-sectional shape of the mounting hole is a polygonal structure, and the mounting hole is used to mount the transmission end of the transmission mechanism.

[0017] Preferably, there are multiple protrusions and multiple fixing portions, and the multiple protrusions are arranged at intervals along the circumferential direction of the tube wall. The multiple fixing portions are configured to be respectively connected with the multiple protrusions in a one-to-one correspondence.

[0018] Preferably, the inner ring of the fitting has a plurality of recessed portions, and along the circumferential direction of the tube wall, the plurality of recessed portions are arranged at intervals and are respectively engaged with the outer sides of the plurality of fixing portions in a one-to-one correspondence.

[0019] Preferably, along the axial direction of the tube wall, a limiting portion is protruded from the outer edge of one end of the elastic portion, and the limiting portion can abut against the end surface of the fitting.

[0020] Preferably, the fitting is further provided with a plurality of through holes, and the plurality of through holes are arranged at intervals along the circumferential direction of the tube wall.

[0021] The beneficial effects of the present invention are:

[0022] The inner tube connection transmission structure provided by the present invention has a fixing hole provided in the tube wall, and a connecting piece is arranged in the tube wall. The connecting piece includes a force transmission part and an elastic part, and the elastic part can reduce vibration and impact. In addition, the elastic part has good elasticity, which can absorb and buffer the vibration and impact energy generated during the transmission process, protect the connection structure from damage, and also help to improve the stability of the connection. The elastic part has a groove provided, and the force transmission part is embedded in the groove, and the force transmission part is used to connect with the transmission end of the transmission mechanism. The fixing piece is installed in the fixing groove of the matching piece to achieve the transmission of high torque. The design of the matching piece cooperates with the fixing piece, and through a precise assembly process, a close fit between the two is guaranteed, thereby effectively transmitting high torque. The fixing piece is clamped with the fixing hole of the tube wall by pressing, and the design of the fixing piece can provide a larger contact area and enhance the stability of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of an inner tube connection transmission structure provided by an embodiment of the present invention;

[0024] Figure 2 An exploded schematic diagram of an inner tube connection transmission structure provided by an embodiment of the present invention;

[0025] Figure 3 A cross-sectional view of an inner tube connection transmission structure provided by an embodiment of the present invention;

[0026] Figure 4 A schematic structural diagram of a matching component provided in an embodiment of the present invention.

[0027] Reference numerals:

[0028] 1. Pipe wall; 11. Fixing hole;

[0029] 2. Connecting member; 21. Force transmission portion; 211. Mounting hole; 22. Elastic portion; 221. Groove; 222. Fixing portion; 223. Limiting portion; 23. Raised portion;

[0030] 3. Mating member; 31. Fixing groove; 311. Opening; 312. Main body; 32. Recessed portion; 33. Through hole;

[0031] 4. Fixing member; 41. Fixing portion; 42. Intermediate portion. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0033] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0036] like Figures 1-4 As shown, in this embodiment, the inner tube connection transmission structure includes a tube wall 1, a connecting member 2, a fitting 3, and a fixing member 4. The tube wall 1 is provided with a fixing hole 11, and the connecting member 2 is disposed within the tube wall 1. The connecting member 2 includes a force transmission portion 21 and an elastic portion 22. The elastic portion 22 is provided with a groove 221, and the force transmission portion 21 is embedded within the groove 221. The force transmission portion 21 is used to connect to the transmission end of the transmission mechanism. Along the circumferential direction of the tube wall 1, the fitting 3 is disposed between the tube wall 1 and the elastic portion 22. The inner ring of the fitting 3 abuts the outer circumference of the elastic portion 22, and the outer ring of the fitting 3 abuts the inner circumference of the tube wall 1. The fitting 3 is provided with a fixing groove 31. One end of the fixing member 4 is engaged with the fixing groove 31, and the other end of the fixing member 4 is engaged with the fixing hole 11.

[0037] Laser forming allows for precise control of the shape and dimensional accuracy of the tube wall 1, ensuring its exceptional strength and precision to meet the demands of high-torque transmission. Along the circumference of the tube wall 1, the mating element 3, the elastic portion 22, and the force transmission portion 21 are sequentially embedded within the tube wall 1. The force transmission portion 21 is embedded within a groove 221 within the elastic portion 22. The force transmission portion 21 defines a mounting hole 211 for connection to the transmission end of the force transmission mechanism, within which the motor drive shaft is mounted. The elastic portion 22 is configured as a soft rubber pad. The inner ring of the elastic portion 22 abuts against the outer circumference of the force transmission portion 21, while the outer ring of the elastic portion 22 abuts against the inner circumference of the mating element 3. Along the circumference of the tube wall 1, the elastic element is sandwiched between the force transmission portion 21 and the mating element 3, reducing vibration and impact. Furthermore, the elastic portion 22 exhibits excellent elasticity, absorbing and buffering vibration and impact energy generated during transmission, protecting the connection structure from damage while also enhancing connection stability. Along the circumferential direction of the tube wall 1, the fitting 3 is clamped between the tube wall 1 and the elastic portion 22, and the fixing member 4 is configured as a pin block. The fixing member 4 is installed in the fixing groove 31 of the fitting member 3 to achieve the transmission of high torque. The design of the fitting 3 cooperates with the fixing member 4, and through a precise assembly process, a tight fit between the two is ensured, thereby effectively transmitting high torque. The fixing member 4 is clamped to the fixing hole 11 of the tube wall 1 by pressing. The design of the fixing member 4 can provide a larger contact area and enhance the stability of the connection. By pressing the fixing member 4 and assembling the fitting 3, the tube wall 1 reliably transmits high torque, meeting various application scenarios with high torque requirements and improving the reliability and stability of the connection structure.

[0038] Continue to refer to Figures 1-4 The fixing member 4 includes two fixing portions 41 and an intermediate portion 42. The two fixing portions 41 are connected to the ends of the intermediate portion 42, respectively. Along the circumferential direction of the tube wall 1, the width of the fixing portion 41 is greater than the width of the intermediate portion 42. The intermediate portion 42 is located at the opening of the fixing groove 31. The two fixing portions 41 can be respectively engaged with the fixing groove 31 and the fixing hole 11. The longitudinal cross-section of the fixing groove 31 is a convex structure. The fixing groove 31 includes an opening portion 311 and a main body portion 312. The width of the main body portion 312 is greater than the width of the opening 311. The main body portion 312 is configured to be engaged with the fixing portion 41, and the opening 311 is configured to be slidably engaged with the intermediate portion 42. Along the length of the fixing groove 31, the intermediate portion 42 of the fixing member 4 and one of the fixing portions 41 are respectively slidably engaged with the opening portion 311 and the main body portion 312. The other fixing portion 41 is engaged with the fixing hole 11 of the tube wall 1 by press-fitting. The fixing member 4 ensures a tight fit between the pipe wall 1 and the fitting 3, thereby effectively and reliably transmitting high torque, meeting various application scenarios with high torque requirements, and improving the reliability and stability of the connection structure.

[0039] Preferably, there are multiple fixing members 4, fixing grooves 31, and fixing holes 11. Multiple fixing holes 11 are spaced apart along the circumference of the tube wall 1 and correspond one-to-one with the multiple fixing grooves 31. Multiple fixing members 4 are snap-fitted into the corresponding fixing holes 11 and fixing grooves 31. In this embodiment, there are four fixing members 4, and the corresponding fixing grooves 31 and fixing holes 11 are also four. The four fixing members 4 are snap-fitted into the fixing grooves 31 of the mating member 3 corresponding to the fixing holes 11 of the tube wall 1 by means of a press fit, further improving the stability and reliability of the connection structure.

[0040] Reference Figure 2 and Figure 3 The outer periphery of the force transmission part 21 is provided with a protruding portion 23, and the inner side wall of the groove 221 has a fixing portion 222. The protruding portion 23 is clamped to the inner side of the fixing portion 222. The cross-sectional shape of the mounting hole 211 of the force transmission part 21 is a polygonal structure, and the mounting hole 211 is used to mount the transmission end of the transmission mechanism. There are multiple protruding portions 23 and multiple fixing portions 222. Along the circumferential direction of the tube wall 1, multiple protruding portions 23 are arranged at intervals, and multiple fixing portions 222 are configured to be clamped and arranged with multiple protruding portions 23 in a one-to-one correspondence. The force transmission part 21 is clamped and arranged with multiple fixing portions 222 in a one-to-one correspondence through the multiple protruding portions 23, so that the force transmission part 21 is embedded in the groove 221 of the elastic part 22, is firmly installed, and is not easy to loosen, thereby being able to reliably transmit high torque.

[0041] Reference Figure 2 The inner ring of the mating member 3 has multiple recesses 32, spaced apart along the circumference of the tube wall 1 and correspondingly engaged with the outer sides of the multiple fixing portions 222. The engagement of the mating member 3 with the outer sides of the multiple fixing portions 222 secures the mating member 3 and the elastic portion 22. The elastic portion 22 reduces vibration and impact, absorbing and cushioning vibration and impact energy generated during transmission, protecting the connection structure from damage and improving connection stability.

[0042] Continue to refer to Figure 2 Along the axial direction of the tube wall 1, a limiting portion 223 is protruded from the outer edge of one end of the elastic portion 22. The limiting portion 223 can abut against the end face of the mating piece 3 to prevent the elastic portion 22 from moving along the axial direction of the tube wall 1 during the transmission of high torque, thereby affecting the reliability and stability of the connection structure.

[0043] Continue to refer to Figure 2 The fitting 3 is also provided with a plurality of through holes 33, which are arranged at intervals along the circumferential direction of the tube wall 1. While ensuring the structural strength of the fitting 3 itself, the fitting 3 can be prevented from cracking during the transmission of high torque. The through holes 33 play a role in dispersing stress.

[0044] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The inner tube connection transmission structure is characterized by: include: A pipe wall (1), wherein the pipe wall (1) is provided with a fixing hole (11); A connecting member (2), the connecting member (2) being arranged in the tube wall (1), the connecting member (2) comprising a force transmission portion (21) and an elastic portion (22), the elastic portion (22) being provided with a groove (221), the force transmission portion (21) being embedded in the groove (221), and the force transmission portion (21) being used to be connected to a transmission end of a transmission mechanism; A fitting member (3) is provided between the tube wall (1) and the elastic portion (22) along the circumferential direction of the tube wall (1), the inner ring of the fitting member (3) abuts against the outer circumference of the elastic portion (22), the outer ring of the fitting member (3) abuts against the inner circumference of the tube wall (1), and the fitting member (3) is provided with a fixing groove (31); A fixing member (4), one end of the fixing member (4) is clamped and arranged with the fixing groove (31), and the other end of the fixing member (4) is clamped and arranged with the fixing hole (11).

2. The inner tube connection transmission structure according to claim 1, characterized in that: The fixing member (4) comprises two fixing portions (41) and a middle portion (42). The two fixing portions (41) are respectively connected to the two ends of the middle portion (42). Along the circumferential direction of the tube wall (1), the width of the fixing portion (41) is greater than the width of the middle portion (42). The middle portion (42) is located at the opening of the fixing groove (31). The two fixing portions (41) can be respectively engaged with the fixing groove (31) and the fixing hole (11).

3. The inner tube connection transmission structure according to claim 2, characterized in that: The fixing groove (31) comprises an opening portion (311) and a main body portion (312); the width of the main body portion (312) is greater than the width of the opening portion (311); the main body portion (312) is configured to be engaged with the fixing portion (41); and the opening portion (311) is configured to be engaged with the intermediate portion (42) in a sliding manner.

4. The inner tube connection transmission structure according to claim 1, characterized in that: The longitudinal section of the fixing groove (31) is in a convex shape.

5. The inner tube connection transmission structure according to claim 1, characterized in that: There are multiple fixing members (4), multiple fixing grooves (31) and multiple fixing holes (11). Along the circumferential direction of the tube wall (1), multiple fixing holes (11) are arranged at intervals and correspond one to one with multiple fixing grooves (31). Multiple fixing members (4) are clamped and arranged in the corresponding fixing holes (11) and fixing grooves (31).

6. The inner tube connection transmission structure according to claim 1, characterized in that: The outer periphery of the force transmission part (21) is provided with a protruding portion (23), the inner side wall of the groove (221) is provided with a fixing portion (222), the protruding portion (23) is clamped to the inner side of the fixing portion (222), the force transmission part (21) has a mounting hole (211), the cross-section of the mounting hole (211) is a polygonal structure, and the mounting hole (211) is used for mounting the transmission end of the transmission mechanism.

7. The inner tube connection transmission structure according to claim 6, characterized in that: There are multiple protrusions (23) and multiple fixing portions (222). Along the circumferential direction of the tube wall (1), multiple protrusions (23) are arranged at intervals, and multiple fixing portions (222) are configured to be respectively connected to the multiple protrusions (23) in a one-to-one corresponding manner.

8. The inner tube connection transmission structure according to claim 6, characterized in that: The inner ring of the fitting (3) has a plurality of recessed portions (32), and along the circumferential direction of the tube wall (1), the plurality of recessed portions (32) are arranged at intervals and are respectively connected to the outer sides of the plurality of fixing portions (222) in a one-to-one corresponding manner.

9. The inner tube connection transmission structure according to claim 1, characterized in that: Along the axial direction of the tube wall (1), a limiting portion (223) is protruded from the outer edge of one end of the elastic portion (22), and the limiting portion (223) can abut against the end surface of the fitting (3).

10. The inner tube connection transmission structure according to claim 1, characterized in that: The fitting (3) is further provided with a plurality of through holes (33), and the plurality of through holes (33) are arranged at intervals along the circumferential direction of the tube wall (1).

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