TWI599729B - Transmission output shaft connector - Google Patents

Description

Gearbox output shaft connector

The present invention relates to the technical field of transmission power transmission, and more particularly to a connector that serially couples and transmits transmission power to drive transmission output shafts of other mechanical components.

The structure of the connector for transmitting the power transmission end of the transmission has been announced by many previous cases. The relevant pre-cases and their advantages and disadvantages are listed for reference:

<<DE102007028873 German Patent - hereinafter referred to as Document 1>>

The structure of the document 1 generally comprises a socket flange (3), a pinion (5), a clamping element (27), and a clamping sleeve (31). The adapter flange (3) has a constricted neck (29) and a concentric hole (23) extending through the adapter flange (3) and the constricted portion (29). The pinion (5) has an axially extending short shaft (25) inserted through the short shaft (25) into a concentric hole (23) of the adapter flange (3) to connect the adapter flange in series (3) ) with pinion (5). The clamping sleeve (31) and the clamping member (27) are matched to the constricted portion (29) to tightly engage the adapter flange (3) and the small tooth (5). With the composition of the above mechanism, the adapter flange (3) is connected in series with the transmission output shaft (7), and the transmission output shaft (7) is synchronously transmitted to the pinion (5) to drive the other pinion gears. (5) Mechanical components that are engaged.

In the above document 1, the clamping member (27) and the clamping sleeve (31) are used to tighten the adapter flange (3) and the pinion (5) to achieve the purpose of synchronous driving. However, the components and combinations disclosed in Document 1 are known to have the following shortcomings;

1. The components are complicated, resulting in high processing and material costs, and it is necessary to separately check the concentricity of each component, and it is easier to form cumulative tolerances.

2. The short shaft (25) and the adapter flange (3) of the pinion (5) are clamped by the clamping member (27) and the clamping sleeve (31). When the torque is too large, they are easy to produce each other. Slip off. Moreover, the clamping member (27) is in a tight position between the pinion gear (5) and the adapter flange (3). During the assembly process, the working space is too small, and the interference during tool operation is easily generated.

<<DE102008024707 German Patent - hereinafter referred to as Document 2>>

It can be seen from the structure shown in the third embodiment of Document 2 (Document 3 of FIG. 2) that although the structural design of Document 2 can solve the problems of excessive components, high cost, cumulative tolerance, and assembly concentricity in Document 1, There are a few missing.

The structure of Document 2 generally comprises a transfer flange (3) and a pinion (5). The flange (3) has a concentric hole (23). The pinion (5) has an axially extending short shaft (25) inserted through the short shaft (25) into the concentric hole (23) of the adapter flange (3) to connect the adapter flange in series (3) and the pinion (5), and then the welding flange (3) and the pinion (5) are welded (fixed) to each other by a welding process.

Although the combination of welding processes can simplify the related components, The clamping sleeve (31) and the clamping member (27) necessary for the literature 1 are omitted, and the manufacturing or procurement costs of the components are saved. However, when the welding process is implemented, it is necessary to ensure that the outer surface of the pinion (5) shaft (25) and the inner surface of the concentric hole (23) of the adapter flange (3) can be completely contacted. Good welding results. This will test the processing skills and assembly accuracy; otherwise the welding effect will be greatly reduced. Moreover, the welding process still has material limitations and considerations, which are more likely to damage the grain chain of the material, so that the weld is derived from hard brittleness and reduces the torque load capacity. And the welded part (weld point 49) is confined to the surface of the component, and the welding force alone resists the shearing force generated by the high-load torque, especially when the instantaneous large torque is applied, the welded portion is extremely easily destroyed.

Moreover, the two parts of the transfer flange (3) and the pinion (5) are permanently fixed to each other by a welding process. If one of the components is worn out, the entire set of components needs to be discarded, and it is impossible to replace the component with a single loss, not only The waste of materials and money also causes troubles in maintenance and purchase.

<<DE102013000428 German Patent - hereinafter referred to as Document 3>>

Document 3 further provides a teaching of another combination form, which is mainly at the end faces of the adapter flange (2) and the pinion gear (3), which respectively have matching toothed discs, which are achieved through meshing of the toothed discs. Connect the adapter flange (2) to the pinion (3).

The adapter flange (2) of the above document 3 and the pinion gear (3), the end faces of the two members abutting each other, are inclined surfaces (as shown in FIG. 2 of the literature 3), such a structural design, in addition to easy formation of points Outside the force, set on the adapter flange (2) and small The toothed disc on the gear (3) is assembled when the respective toothed discs are coupled to each other; since there is no axial and radial centering design (or function), it is necessary to separately correct the concentricity between the members, and it is easy to form a cumulative tolerance.

Furthermore, the tooth profile of each toothed disc is pointed (as shown in Fig. 1 of Fig. 3), and this pointed tooth profile easily leads to insufficient strength of the respective toothed discs. Furthermore, the bolt (15) locking method of the document 3 is attached to the abutting end face of the output shaft of the transmission from the adapter flange (2) as a starting point for the insertion. When there is a need to replace the pinion (3), the adapter flange (2) must first be slammed from the output shaft of the transmission to further loosen the bolt (15) to release the bolt (15). Transfer the pinion (3) at the front end of the flange (2). The complexity of the working hours and procedures can be imagined, and even after the replacement, the components are proofread and other issues.

In view of the above problems and deficiencies of the prior art, the main object of the present invention is to provide a connector for a gearbox output shaft, which overcomes the above-mentioned literature by re-designing the structure of the tooth engagement and the direction in which the locking member penetrates. 1-3 structural design, the existence of the lack and inconvenience.

In accordance with the above objects of the present invention, a connector for a gearbox output shaft is provided that includes a coupling flange, a pinion, and a bolt. The engagement flange has a concentric one of the screw holes and a first curved ring. The pinion gear is serially connected to the front end surface of the engaging flange, and has one concentric hole, one outer tooth, and one second tooth ring. The bolt is from the front end surface of the pinion gear, and the counterbore is penetrated The screw holes are screwed together to restrain the pinion and the connecting flange. Through the composition of the above-mentioned components, through the meshing of the first and second crank rings, the power transmission and the synchronous movement between the connecting flange and the pinion gear are connected, and the automatic centering and positioning rigidity are provided, and the bolt is easily disassembled. Sexuality, overcoming the lack of conventional connector structure design.

10‧‧‧Connecting flange

12‧‧‧ screw holes

14‧‧‧Flange outer teeth

16‧‧‧First tooth ring

162‧‧‧The first tooth

20‧‧‧ pinion

22‧‧‧Sinking

24‧‧‧ external tooth

26‧‧‧Second ring

262‧‧‧Second tooth

30‧‧‧ bolt

40‧‧‧Dust cover

Figure 1 is a perspective view of a connector of the present invention.

Fig. 2 is a cross-sectional view showing the embodiment 2-2 shown in Fig. 1.

Fig. 3 is an exploded perspective view of the embodiment shown in Fig. 1.

Figure 4 is a perspective view showing another embodiment of the connector of the present invention.

In the following, the embodiment of the connector of the output shaft of the transmission of the present invention will be further described with reference to the drawings. For the sake of understanding the embodiments of the present invention, the same components are denoted by the same reference numerals.

Referring to Figures 1 to 4, the connector of the output shaft of the transmission of the present invention comprises a concentrically connected one of the flanges 10, a pinion 20, a bolt 30, and a dust cover 40, wherein: The connecting flange 10 has a concentric arrangement of one of the screw holes 12, a flange outer rib 14, and a first crank ring 16. The screw hole 12 is formed on the front end surface of the engaging flange 10. The flange outer rib 14 is formed along the outer surface of the engaging flange 10. The first curved ring 16 is formed on the front end surface of the engaging flange 10, and has a plurality of circumferentially distributed and spaced apart first curved teeth 162. Each of the first curved teeth The outer contour of the 162 may be a straight concave tooth, a straight convex tooth, a concave concave tooth, a concave convex tooth, a convex convex tooth, a convex concave tooth. When implemented, the flange outer rib 14 can be selectively omitted (as shown in Figure 4).

The pinion 20 has a counterbore 22, an outer rib 24, and a second spur ring 26 concentrically disposed. The counterbore 22 is formed through the pinion gear 20 in front and rear, and has large and small diameter segments in sequence. The outer rib 24 is formed along the outer peripheral surface of the pinion gear 20. The second curved ring 26 is disposed on the rear end surface of the pinion 20 corresponding to the first curved ring 16, and has a plurality of circumferentially distributed and spaced apart second curved teeth 262. In implementation, the outer contour of each of the second curved teeth 262 may be a straight concave tooth, a straight convex tooth, a concave concave tooth, a concave convex tooth, a convex convex tooth, and a convex concave tooth.

The bolt 30 is screwed into the screw hole 12 of the engaging flange 10 from the front end surface of the pinion gear 20 to engage the pinion gear 20 to restrain the pinion gear 20 and the engaging flange 10.

The dust cover 40 is plugged into the counterbore 22 of the pinion 20 to close the cross section of the counterbore 22 on the front end face of the pinion 20. The outer contour of the dust cover 40 is formed to match the contour of the counterbore 22.

Therefore, the above is the connector of the transmission output shaft of a preferred embodiment of the present invention, the description of each component and the assembly method, and the actuation characteristics of the embodiment of the present invention are further described below.

Referring to FIG. 2, the first crank ring 16 of the engaging flange 10 and the second crank ring 26 of the pinion gear 20 are meshed with each other, and then the bolt 30 is engaged with the front end surface of the pinion gear 20 through the counterbore 22. Screwed into the screw hole 12 of the connecting flange 10, The yoke restrains the pinion 20 and the engaging flange 10, and engages the flange 10 and can be connected in series with the gearbox output shaft (not shown).

As described above, the power transmission and synchronous movement between the engaging flange 10 and the pinion 20 are connected by the cooperation of the first and second crank rings 16, 26. And through the first and second crank rings 16, 26, the outer contours of the first and second curved teeth 162, 262 (straight concave teeth, straight convex teeth, concave concave teeth, concave teeth, convex teeth, convex and concave teeth) geometry The shape, as well as the multi-tooth engagement of the circumferential distribution, averages the error and further improves the positioning accuracy. In the process of actuation, whether it is subjected to "radial force", "axial force", or "tangential force", it can provide better positioning rigidity; plus the characteristics of the curved tooth structure, With "automatic centering" and after running-in, it can improve the positioning accuracy and other benefits, and greatly improve the overall structural strength and precision.

In addition to providing the automatic centering and positioning rigidity, the present invention allows the bolt 30 to be threaded from the front end surface of the pinion 20 through the design of the structure, thereby further providing the user with the convenience of disassembling, so as to facilitate the fast pinion 20 Replacement.

The above description is only for the preferred embodiment of the present invention, and is intended to clarify the features of the present invention, and is not intended to limit the scope of the embodiments of the present invention. Changes that are well known to those skilled in the art are still within the scope of the invention.

10‧‧‧Connecting flange

20‧‧‧ pinion

40‧‧‧Dust cover

Claims (8)

A connector for a gearbox output shaft, comprising: a connecting flange having a screw hole concentrically disposed, and a first crank ring; the screw hole is formed on a front end surface of the engaging flange; the first curved tooth a ring system is formed on the front end surface of the engaging flange; a pinion gear is serially connected to the front end surface of the engaging flange, and has one concentric hole and a second curved tooth ring; the counterbore is penetrated before and after The second gear ring is formed by the first crank ring formed on the rear end surface of the pinion gear; and a bolt is inserted from the front end surface of the pinion gear to the counterbore and the screw The hole is screwed to restrain the pinion gear and the engagement flange, and the first and second crank rings are in mesh with each other. The connector of the transmission output shaft of claim 1, wherein the first crank ring has a plurality of circumferentially spaced and spaced apart first teeth, wherein each of the first curved outer contours is One of a straight concave tooth, a straight convex tooth, a concave concave tooth, a concave tooth, a convex tooth, or a convex tooth. The connector of the transmission output shaft of claim 2, wherein the second crank ring has a plurality of circumferentially spaced and spaced apart second curved teeth, wherein each of the second curved outer contours is One of a straight concave tooth, a straight convex tooth, a concave concave tooth, a concave tooth, a convex tooth, or a convex tooth. The connector of the transmission output shaft according to any one of claims 1 to 3, wherein the pinion further has an outer rib, the outer rib being formed along an outer peripheral surface of the pinion. The connector of the transmission output shaft of claim 4, wherein the counterbore further provides a dust cap plug to close the cross section of the counterbore at the front end face of the pinion. The connector of the transmission output shaft of any one of claims 1 to 3, wherein the engagement flange is further provided with a flange outer rib along the outer surface ring. The connector of the gearbox output shaft of claim 6, wherein the counterbore further provides a dust cap plug to close the cross section of the counterbore at the front end face of the pinion gear. The connector of the transmission output shaft according to any one of claims 1 to 3, wherein the counterbore further provides a dust cap plug to close the cross section of the counterbore at the front end face of the pinion.