JP3143696U - Universal fitting - Google Patents

Abstract

A universal joint capable of rotating at a large angle and having high torque is provided.
The receiving part includes a receiving part and a rotating part, and there is a receiving part and two perforations communicating with the receiving part at one end of the receiving part, and the rotating part includes a connecting part, a rotating part, and the connecting part and the rotating part. The rotating part is rotatably provided in the receiving part of the receiving seat, the rotating part has a pivot hole penetrating the rotating part, and the fixed part is The rotating part is pivotally mounted on the receiving seat through the perforation of the receiving side wall and the pivoting hole of the rotating part, the connecting part has the lowest point, and the shortest distance between the lowest point and the center of the pivoting hole is And the shortest distance is larger than the radius of the rotating part. The distance between the lowest point of the connecting portion and the center of the pivot hole and the end of the side wall is relatively long, and the rotating part can be stably and smoothly rotated at a large angle with respect to the receiving seat, and the rotating part has a good structure. Has strength.
[Selection] Figure 7

Description

  The present invention relates to a kind of universal joint, and more particularly, to a universal joint capable of rotating at a large angle and having high torque.

  FIG. 1 shows a related universal sleeve 1 which includes a receiving seat 2 and a rotating part 3 pivoted on the receiving seat 2. The rotating part 3 includes a coupling part 4, a sphere part 5 having a perforation 6, a neck part 7 connected between the coupling part 4 and the sphere part 5, and a receiving seat 2 and a pin 8 passed through the perforation 6. . The distance between the lowest point G1 of the dent of the neck 7 (ie, the thinnest part of the neck) and the center of the perforation (ie, the center of the sphere) is L1, and the distance L1 is greater than the radius r1 of the sphere. It is small and the distance between the lowest point G1 of the neck and the center of the sphere is relatively short. Therefore, the rotation of the rotating part is limited, and a rotation at a large angle cannot be performed. It was.

  FIG. 2 shows another related universal sleeve 10, which is provided in an elongated shape with a recessed neck 17 so that a large angle of rotation can be performed, and the side wall 11 of the receiving seat 12 is relatively long. Provided low. There is a shortest distance L2 between the lowest point G2 of the recess of the neck portion 17 and the center of the perforation 16, and this distance L2 is smaller than the radius r2 of the spherical portion 15, and the rotating part 13 of the universal sleeve 10 is the receiving seat 12. However, the structural strength of the elongated neck 17 is clearly insufficient, and the neck 17 is deformed and cracked for a long time or under high torque rotation. Very likely to occur, this structure is not safe and unreliable.

  Please refer to FIG. The side wall 11 of the receiving seat 12 is relatively low, so that the neck 17 and the ball portion 15 of the rotating part 13 do not abut against the side wall 11 of the receiving seat 12 during rotation. Torque is transmitted only to the pin 18, and the pin 18 is very likely to be deformed and cracked, and the reliability and life of the universal sleeve 10 are not ideal.

  In the present invention, the distance between the lowest point of the neck portion of the universal sleeve and the center of the sphere is relatively short, and therefore, the rotation of the rotating part is limited, and a large angle cannot be rotated. To solve the problem. And the structural strength of the elongated neck is clearly insufficient, and the neck is very prone to deformation and cracking for a long time or under high torque rotation, so the structure is unsafe and unreliable. Solve a problem.

  The present invention provides a kind of universal joint. It includes a receiving seat and a rotating part, and at one end of the receiving seat is a receiving part and two perforations communicating with the receiving part. The rotating part includes a coupling part, a rotating part, and Including a connecting portion connected therebetween, wherein the rotating portion is rotatably provided in the receiving portion of the receiving seat, the rotating portion has a pivot hole penetrating the rotating portion, and the fixed component is the receiving seat The rotating part is pivotally mounted on the receiving seat through a perforation in the side wall and a pivot hole in the rotating part, the connecting part has a lowest point, and there is a shortest distance between the lowest point and the center of the pivoted hole; The shortest distance is larger than the radius of the rotating part.

  The universal joint of the present invention has a relatively long distance between the lowest point of the connecting part of the rotating part and the center of the pivot hole and the end of the side wall, so that the rotating part can be stably and smoothly rotated at a large angle with respect to the receiving seat. The rotating parts have good structural strength, can withstand high torque or long-time rotation, greatly improve their work performance, and have good durability and service life.

  Please refer to FIG. 4 and FIG. A preferred embodiment of the universal joint of the present invention includes a receiving seat 20 and a rotating component 30 pivoted on the receiving seat 20.

  See also FIG. A receiving portion 21 is provided at one end of the receiving seat 20, the receiving portion 21 is annularly surrounded by a side wall 22, and two laterally oriented perforations 23 facing the side wall 22 are provided. A locking portion 24 is provided at the other end of the seat 20, and in a preferred embodiment, the locking portion 24 can be coupled to a driving tool such as a spanner or a connecting rod.

  A rotating portion 31 is provided at one end of the rotating component 30, and a coupling portion 32 is provided at the other end of the rotating component 30. A connecting portion 33 is provided between the rotating portion 31 and the coupling portion 32. The rotating portion 31 is rotatably accommodated in the accommodating portion 21 of the receiving seat 20, and a pivot hole 34 that penetrates the rotating portion 31 is provided in the central portion of the rotating portion 31. The fixed component 40 is passed through the perforation 23 in the side wall 22 of the receiving seat 20 and the pivot hole 34 of the rotating portion 31 of the rotating component 30, and the rotating component 30 is rotatably coupled to the receiving seat 20. In a preferred embodiment, the rotating portion 31 has a spherical shape, the pivot hole 34 has a substantially X shape with a wide outside and a narrow inside, and the coupling portion 32 can be coupled with a driving tool such as a sleeve.

  FIG. 6 further shows that the connecting portion 33 has a recessed lowest point G3 (that is, the thinnest portion of the connecting portion). The shortest distance between the lowest point G3 of the connecting portion 33 and the center of the pivot hole 34 (that is, the center of the rotating portion 34 and the fixed component 40) is L3, and the end of the side wall 22 of the receiving seat 20 and the pivot hole The distance between the centers of 34 is L4, and the shortest distance L3 is larger than the radius r3 of the rotating part 31 (L3> r3). In a preferred embodiment, L3 / r3> 1.1 and L3 / L4> 1.3. The distance between the lowest point G3 of the connecting portion 33 and the center of the pivot hole 34 of the rotating portion 31 and the distal end of the side wall 22 is relatively long, and the rotating component 30 is stable at a large angle with respect to the receiving seat 20, In addition, smooth rotation is possible, the work performance is greatly improved, and it is more convenient in terms of operation.

  Please refer to FIG. The longest distance between the maximum end of the pivot hole 34 of the rotary part 31 of the rotary component 30 and the center of the pivot hole 34 is L5, and the distance L5 is the lowest point G3 of the connecting part 33 and the center of the pivot hole 34. It is not larger than the shortest distance L3 between them (L5 ≦ L3). As a result, when the rotating component 30 rotates at a large angle, it has a good structural strength, can withstand high torque or long-time rotation, and does not deform or crack. Therefore, this structure is considerably safe and reliable, and its durability and service life are both good.

  8 and 9 show a second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the elastic body 50 is added in the second embodiment. The elastic body 50 is provided in the receiving portion 21 of the receiving seat 20 and supports the rotating portion 31 of the rotating component 30 with elasticity, thereby preventing the rotating component 30 from wobbling and enabling more stable rotation. And

It is sectional drawing of a well-known universal sleeve. FIG. 6 is a cross-sectional view of another known universal sleeve. It is a figure which shows the state which the rotation component of the universal sleeve of FIG. 2 rotated at a certain angle with respect to the receiving seat. It is a solid combination figure of the 1st example of the present invention. It is a three-dimensional exploded view of the first embodiment of the present invention. FIG. 6 is a sectional view taken along line 6-6 in FIG. It is 7-7 sectional drawing of FIG. It is a three-dimensional exploded view of the second embodiment of the present invention. It is sectional drawing of the 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Universal sleeve 2 Receiving seat 3 Rotating component 4 Joint part 5 Ball | bowl 6 Drilling 7 Neck part 8 Pin 10 Universal sleeve 11 Side wall 12 Receiving seat 13 Rotating part 14 Joint part 15 Spherical part 16 Perforation 17 Neck part 18 Pin 20 Receptacle 21 Housing portion 22 Side wall 23 Perforation 24 Locking portion 30 Rotating component 31 Rotating portion 32 Coupling portion 33 Connecting portion 34 Pivoting hole 40 Fixing component 50 Elastic body

Claims (16)

In a universal joint, the universal joint is
A receiving seat having at its one end a receiving portion and two perforations communicating with the receiving portion;
A rotating part including a connecting part, a rotating part, and a connecting part connected between the connecting part and the rotating part, the rotating part being rotatably provided in the receiving part of the receiving seat; The rotating part has a pivot hole penetrating the rotating part, and the fixed part is passed through the perforation of the side wall of the receiving seat and the pivot hole of the rotating part, and the rotating part is pivoted to the receiving seat. The connecting part has a lowest point, and there is a shortest distance between the lowest point and the center of the pivot hole, and the shortest distance is larger than the radius of the rotating part;
A universal joint characterized by comprising   2. The universal joint according to claim 1, wherein a value obtained by dividing the shortest distance by the radius of the rotating part is larger than 1.1.   The universal joint according to claim 1, wherein the accommodating portion is annularly surrounded by one side wall, and the two perforations are provided in the side wall.   The universal joint according to claim 1, wherein the pivot hole is provided in a central portion of the rotating portion.   The universal joint according to claim 1, wherein the center of the pivot hole is the center of the fixed part.   2. The universal joint according to claim 1, wherein a locking portion capable of connecting a driving tool such as a spanner or a connecting rod is provided at the other end of the receiving seat.   The universal joint according to claim 1, wherein the pivot hole has a wide outside and a narrow inside.   8. The universal joint according to claim 7, wherein the pivot hole of the rotating part of the rotating part has a maximum end, and has a longest distance between the maximum end and the center of the pivot hole, and the longest distance is the above-mentioned distance. Universal joint, characterized in that it is not larger than the shortest distance.   The universal joint according to claim 1, wherein there is a distance between the end of the side wall of the seat and the center of the pivot hole, and a value obtained by dividing the shortest distance by the distance is greater than 1.3. Universal fittings.   The universal joint according to claim 1, wherein the rotating portion has a substantially spherical shape.   The universal joint according to claim 1, wherein the coupling portion of the rotating parts can be coupled to a drive tool such as a sleeve.   2. The universal joint according to claim 1, wherein the connecting portion has a thinnest portion having a thin wall, and this portion is the lowest point of the connecting portion.   2. The universal joint according to claim 1, wherein an elastic body is provided in the receiving portion of the receiving seat, and the elastic body elastically supports the rotating portion of the rotating component. In a universal joint, the universal joint is
A receiving seat having a receiving portion at one end thereof;
A rotating part including a coupling part, a rotating part, and a connecting part connected between the connecting part and the rotating part, the rotating part being pivotally installed in the receiving part of the receiving seat, the connecting part Has a minimum point, has a shortest distance between the minimum point and the center of the rotating part, and a value obtained by dividing the shortest distance by the radius of the rotating part is larger than 1.1. .   15. The universal joint according to claim 14, wherein the connecting portion has a thinnest portion with a thin wall, and the thinnest portion is a lowest point of the connecting portion.   15. The universal joint according to claim 14, wherein the receiving portion of the receiving seat is annularly surrounded by one side wall, and there is a distance between the end of the side wall and the center of the rotating portion, and the above shortest distance is divided by this distance. Universal joint, characterized in that the measured value is greater than 1.3.

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