TWI395887B - Coupling - Google Patents

Description

Coupling structure

The present invention relates to a coupling structure, and more particularly to a flexible coupling structure that absorbs shock absorption and smoothly transmits torque.

The use of a flexible coupling to connect the two axially corresponding shafts, which can absorb the characteristics of eccentricity, declination and axial deviation to achieve shock absorption/shock absorption during operation, is a relatively well-known technique. The structural characteristics, advantages and disadvantages of different flexible couplings are ingeniously different. Please refer to the flexible coupling as shown in the fourth figure, mainly on the opposite end faces of the driving member (51) and the driven member (52), respectively forming concentrically corresponding annular grooves (511, 521). Then, the adhesive is injected into the annular groove (511, 521), and finally the two ends of the metal bellows (53) are respectively inserted into the annular groove (511, 521). After the adhesive is solidified, the bellows is The two ends of (53) are respectively connected with the driving member (51) and the driven member (52) to complete a flexible coupling (50). However, in the process of assembling the bellows (53), the end of the bellows (53) will extrude the adhesive in the annular groove (511, 521), and the thin end of the bellows (53) is assembled. When it is easy to scrape the adhesive in the annular groove (511, 521), it affects the connection between the bellows (53), the active member (51) and the follower (52) and the torque transmission relationship, even when using a section After the time has passed, there is indeed a need for improvement.

Please cooperate with the flexible coupling (60) as another conventional one, as shown in the fifth and sixth figures, which also has an active member (61), a follower member (62) and a pair of ends. The bellows (63) are concentrically adhered to the end faces of the active member (61) and the follower member (62). The structure and combination of the active member (61) and the follower (62) are exactly the same, and therefore, only the active member (61) will be discussed below. The active member (61) is different from the end of the follower (62) with a flange (611), and the joint of the flange (611) and the active member (61) is provided with a shoulder (612). . The active member further includes a positioning ring (613) disposed on the periphery of the shoulder (612), and an annular groove (614) is formed between the positioning ring (613) and the active member (61), and the positioning ring (613) The inner diameter is greater than the outer diameter of the shoulder (612).

Please also refer to the sixth and seventh figures. When assembling the coupling (60) as shown in the fifth figure, firstly, the positioning ring (613) is sleeved on the outer edge of the shoulder (612). Then, the adhesive is injected into the annular groove (614), so that the adhesive fills the gap between the end of the positioning ring (613) and the flange (611) and the shoulder (612), and the positioning ring (613) is concentric. Adhered to the active/receiving member (61/62); after the positioning ring (613) is adhered, the adhesive is again injected into the annular groove (614), and the end of the bellows (63) is inserted In the annular groove (614), the end of the corrugated tube (63) is adhered to the annular groove (614) by the filling action of the adhesive.

Such a structure and assembly method can overcome the disadvantages of the above-mentioned first conventional coupling adhesive in the process of assembly, being extruded or scraped. However, the positioning ring (613) and the shoulder portion (612) may cause concentricity errors during the bonding process due to the difference in diameter; and the wall thickness of the corrugated tube (63) is smaller than the width of the annular groove (614). Similarly, concentricity errors may occur during the bonding process. If the positioning loop (613) and the corrugated tube (63) accumulate errors, the function of shock absorption and shock absorption in the future will be greatly reduced. And the two-time viscose solidification process will inevitably prolong the production time of the coupling, which may increase the production cost.

The main object of the present invention is to solve the above problems and to provide a coupling structure which is excellent in concentricity, strong in structure, and easy to assemble.

In order to achieve the above object, the present invention mainly comprises an active member, a driven member and a bellows connected concentrically to opposite sides of the active member and the driven member; and the two ends of the bellows and the active member The annular gap between the follower and the follower is filled with adhesive to improve the coaxial connection between the active member, the driven member and the bellows.

By the combination of the above structures, the invention not only has good concentricity, simple structure, strong bonding degree, and can adjust the thickness and width of the filling adhesive according to different torque requirements, and meets the requirements of customization, and different adhesives have different The basic adhesive thickness requirement is based on the fact that if the adhesive does not reach the adhesive thickness of its basic requirements, it will not be able to fully exert its strong adhesive properties, and the above-mentioned conventional mechanism is fixed in the space where the adhesive is placed. It is completely impossible to change the placement space of the adhesive according to the characteristics of the adhesive and the torsion requirement, so that the placement space is fixed regardless of the type of adhesive, and thus the adhesive cannot fully exert the maximum adhesive property. The present invention completely solves this problem.

The above and other objects and advantages of the present invention will be readily understood from

Of course, the invention may be varied on certain components, or in the arrangement of the components, but the selected embodiments are described in detail in the specification and their construction is shown in the drawings.

The present invention relates to a coupling structure, as shown in the first and second figures, which mainly comprises an active member (10), a follower member (20) and a concentric connection to the active member. (10) A metal bellows (30) opposite to the follower (20). The material of the bellows (30) can be aluminum alloy or stainless steel.

The active member (10) and the follower (20) are identical in structure and mirror-corresponding to each other, and coaxially correspond to each other by the connection of the bellows (30). The driving member (10) and the driven member (20) respectively have an inner surface (11, 21), and the inner surfaces (11, 21) are respectively concentrically formed with an annular groove (111, 211); the corrugated tube (30) A first plug portion (31) and a second plug portion (32) are respectively disposed at the two ends, wherein the first plug portion (31) and the second plug portion (32) are respectively tightly coupled. The insertion is received in the annular groove (111, 211) of the active member (10) and the driven member (20). Finally, the adhesive is filled into the annular gap between the two ends of the bellows (30) and the driving member (10) and the driven member (20), and the active member (10), the driven member (20) and the bellows are reinforced. (30) The coaxial connection between the three. Please refer to the figure as shown in the third figure. The thickness of the adhesive filling of the present invention can be appropriately adjusted according to the torque to be transmitted by the coupling and the characteristics of the adhesive. Therefore, the specification can be changed without changing the specifications. Under, to meet the requirements of customization. The method is briefly described as follows: in the process of bonding the bellows (30), the pressure of the bellows (30) must be applied axially by the active member (10) and the follower member (20), so that As long as the amount of glue is controlled, and the pressure of the bellows is applied to the main and follower members (10, 20), the ring between the two ends of the bellows (30) and the active member (10) and the follower member (20) can be controlled. The width of the gap, that is, the change in the gap size of the adhesive, depends on the characteristics of the adhesive and the desired torque value; when the viscosity characteristics and the torque value need not be too large The thickness of the adhesive can be applied to the main and follower (10, 20) and the bellows (30), and the main and follower (10, 20) and the corrugation can be placed. The glue between the tubes (30) is thinned.

In summary, the present invention does have the following advantages:

1. The two plug portions (31, 32) of the bellows (30) of the present invention are closely inserted into the annular grooves (111, 211) of the driving member (10) and the driven member (20), respectively It is not necessary to apply the adhesive in the annular groove (111, 211), so that the concentricity after assembly is not affected by the difference of the matching size.

2. The two plug portions (31, 32) of the bellows (30) of the present invention are closely inserted into the annular grooves (111, 211) of the driving member (10) and the driven member (20), respectively There is no need to install a positioning ring as in the conventional coupling, which can simplify the structure and reduce the cost.

3. The adhesive of the present invention is directly filled into the annular gap between the two ends of the bellows (30) and the active member (10) and the driven member (20), so that it is not extruded or scraped. The problem is that depending on the characteristics of the adhesive and the required torque, the thickness of the adhesive is randomly changed to achieve the best adhesion and improve the bonding strength.

4. The thickness and depth of the adhesive filling of the present invention can be appropriately adjusted according to the torque and the adhesive characteristics to be transmitted by the coupling, so that the customized requirements can be achieved without changing the specifications. .

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

From the above detailed description, those skilled in the art can understand that the present invention can achieve the foregoing objects, and no similar publications are found in similar processes or products, which have been in compliance with the provisions of the Patent Law, and have been patented according to law. Application.

10. . . Active part

11. . . inside

111. . . Ring groove

20. . . Follower

twenty one. . . inside

211. . . Ring groove

30. . . Bellows

31. . . First plug

32. . . Second plug

50. . . Flexible coupling

51. . . Active part

511. . . Ring groove

52. . . Follower

521. . . Ring groove

53. . . Bellows

60. . . Flexible coupling

61. . . Active part

611. . . Flange

612. . . Shoulder

613. . . Locating ring

62. . . Follower

63. . . Bellows

The first figure is a partial cross-sectional view of the present invention.

The second drawing is an exploded view of a partial cross section of the present invention.

The third drawing is a schematic representation of various embodiments of the invention.

The fourth figure is a cross-sectional view of a conventional coupling.

The fifth figure is a partial cross-sectional view of another conventional coupling.

The sixth figure is a schematic diagram of the coupling of the adhesive in the sixth figure.

The seventh figure is a partial enlarged view of the coupling in the sixth figure.

10. . . Active part

11. . . inside

111. . . Ring groove

20. . . Follower

twenty one. . . inside

211. . . Ring groove

30. . . Bellows

31. . . First plug

32. . . Second plug

Claims (3)

A coupling structure includes an active member, a follower member and a bellows connected in a concentric manner to opposite sides of the active member and the driven member; wherein the active member and the driven member are respectively The inner surface of each of the two inner surfaces is concentrically formed with an annular groove; the two ends of the bellows are respectively formed with a plug portion, and the two plug portions are closely inserted into the active member and the driven member respectively. In the annular groove; the annular gap between the two ends of the bellows and the active member and the driven member is filled with adhesive, and the annular groove is not filled with adhesive, thereby depending on the adhesive property and the torque Randomly changing the thickness of the adhesive to improve the coaxial connection between the active member, the driven member and the bellows; the bellows is positioned by the pressure of the active member and the driven member axially applying the bellows, as long as The amount of adhesive is controlled, and the pressure of the bellows is applied to the main and follower members to control the width of the annular gap between the two ends of the bellows and the active member and the driven member, and the gap size of the adhesive is placed. The thickness and depth of the adhesive filling can be as desired by the coupling Torque delivery characteristics of size and glue to make appropriate adjustments. The coupling structure according to claim 1, wherein the bellows is made of an aluminum alloy. The coupling structure according to claim 1, wherein the bellows is made of stainless steel.