TWM458487U - Structure of universal joint - Google Patents

Description

Universal joint structure

The present invention relates to an improvement of a universal joint structure, which has a sheath that can be blocked from the outer side of the bolt to ensure that it is not loosened, and a ring groove is formed on the inner side of the sheath to maintain the latching margin and prevent the bolt from being loosened. Wear and tear when it is dangerous.

Generally, when the pneumatic/power tool is assembled and disassembled, if the space is narrow, the axial direction of the action object cannot be aligned with the axis of rotation of the pneumatic/power tool. It will first be sleeved on the pneumatic/power tool shaft with a 10,000 joint, and then a sleeve or screw head. The rotation of the rotating shaft through the universal joint is switched to conform to the action object, thereby facilitating assembly or disassembly of the action object.

As shown in Figures 1 and 2 of the Republic of China No. M279773, which is a schematic exploded view of a conventional universal joint, comprising a sleeve and a spherical seat, one end of the spherical seat having a spherical shape a connector, the connector is provided with a through hole, the sleeve has a receiving hole, and the receiving hole is provided with two opposite holes, the receiving hole is for the connecting head to be inserted, and is worn by a pin The opening and the perforation allow the sleeve to be pivotally coupled to the ball seat to have a degree of freedom of rotation.

When the sleeve and the spherical seat are in a non-coincident state, the sleeve can drive the ball seat to rotate by the action of the pin and the through hole. However, during the rotation of the universal joint, the bolt is driven by the frictional force of the spherical seat, and will reciprocate between the openings to protrude from the spherical seat. Even after a long time of displacement, it will loosen and fall.

Therefore, the industry has to rive the sleeve and the pin to prevent the pin from loosening. However, after the bolt is riveted, it is changed to the piercing of the ball seat and the bolt to cause friction. Generally, the pneumatic/power tool rotates up to 300 RPM or more. After repeated friction, the smaller pins are more likely to reduce the strength due to wear. It is even easy to break during the process of use.

In general, the shortcomings of the prior art are generally included in the pin of the conventional universal joint, which is easy to be displaced due to long-term use. If it is riveted, it will cause the pin to wear and the strength is not broken. In view of the above shortcomings, the present invention proposes a universal joint structure, which is coated with a sheath for retaining the working margin of the plug to protect the universal joint from loosening, abrasion or breakage.

This creation is a universal joint structure that includes:

a body having a receiving hole at one end and a cavity at the other end, and a pair of pin holes are arranged in a radial direction of the seat body;

a rotating member having a ball end at one end and a tool end connected to a tool member at the other end; wherein the ball end is provided with a tapped hole at both ends;

a pin that passes through the screw hole and the pair of pin holes to rotatably receive the ball end in the chamber;

A sheath is a sleeve that can be disposed on the outer periphery of the end of the housing chamber. The inner circumference of the sheath is recessed with a ring groove, and the ring groove is positioned outside the pair of pin holes.

The main purpose of this creation is that the sheath protects the end of the pin from exposure and does prevent the pin from falling out of the pin hole of the seat. Moreover, the groove groove which is recessed in the inner circumference of the sheath can provide a latching activity margin, and the screw hole wears the pin, the derivation strength is reduced, the fracture is broken, and the like.

The second objective of the present invention is to further provide a spring groove recessed in the inner periphery of the sheath, and a positioning spring is accommodated therein, and a positioning groove is disposed at the surface of the sheath, and the positioning groove is available for positioning. The spring is snapped.定位 Position the sheath at the end of the seat to ensure that the sheath does not accidentally fall off.

The second objective of the present invention is that, in addition, the body is provided with a radially tapered tapered surface on one side of the rotating member, and a radial divergence is also provided at one end of the inner circumference of the sheath. Leading. The inner circumference of the sheath and the seat system are tightly fitted and fixed, and the raft can facilitate the clamping of the sheath to the seat body by the cooperation of the inclined cone surface and the guiding surface, and the sheath is strengthened by the inner circumference of the tight fit. The bonding strength of the seat.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above. In the following description, like elements are denoted by the same reference numerals.

Please refer to FIG. 1 to FIG. 3, which is a universal joint structure comprising:

a body 10 having a receiving hole 11 at one end and a cavity 12 at the other end, and a pair of pin holes 13 in the radial direction of the body 10 of the housing 12; The body 10 has a stepped surface 14 having a smaller radial dimension on the outer periphery of one end of the chamber 12, and a positioning groove 15 is recessed in the surface 14 of the stage.

a rotating member 20 having a ball end 21 at one end and a tool end 22 (such as FIG. 5) for connecting a tool member 90; wherein the ball end 21 is provided with a ball end 21 A rotary hole 23 is formed at both ends, and a pushing spring 24 is disposed between the spherical end 21 and the chamber 12.

a pin 30 that passes through the screw hole 23 and the pair of pin holes 13 to rotatably receive the ball end 21 in the chamber 12; wherein the two ends of the pin 30 are a ball End. as well as

A sheath 40 is a sleeve that can be applied to the outer periphery of the end of the chamber 12 of the base 10. As shown in FIG. 3 and FIG. 4, a ring groove 41 is recessed in the inner circumference of the sheath 40. The groove 41 is a circular arc groove, and the ring groove 41 is positioned outside the pair of pin holes 13. The inner circumference of the sheath 40 is recessed with a spring slot 42 for receiving a positioning spring 43 therein. Since the positioning spring 43 is a C-type spring, its outer diameter is smaller than the spring groove 42 and its inner diameter is larger than the positioning groove 15. When the sheath 40 is sleeved on the step surface 14, the sheath 40 is positioned at the end surface 14 of the end of the base 10 by the spring groove 42 and the positioning spring 43 being engaged with the positioning groove 15. The positions of the ring groove 41, the pin hole 13, the positioning groove 15 and the spring groove 42 are designed. When the positioning spring 43 is engaged with the positioning groove 15, the ring groove 41 is positioned outside the pair of pin holes 13, so as to facilitate Assemble the locator.

Furthermore, the stage surface 14 is provided with a radially tapered tapered surface 16 on one side of the rotating member 20, and a radially diverging guiding surface 44 is also provided at one end of the inner circumference of the sheath 40. And the inner circumference of the sheath 40 and the step surface 14 are tightly fitted and fixed. For example, the inner circumference of the sheath 40 is respectively provided with a first pressing surface 45 and a second pressing surface 46 on both sides of the annular groove 41, whereby the inclined cone surface 16 and the guiding surface 44 can make the sheath 40 smooth. The sleeve is disposed at the stage surface 14, and the first pressing surface 45 and the second pressing surface 46 are tightly fitted with the stage surface 14 to prevent the sheath 40 from being accidentally removed or peeled off.

After clarifying the detailed structure of the above case, the following is a detailed explanation of the action principle of the case:

As shown in FIG. 5, when the base 10 and the rotating member 20 are pivoted in a non-coincident state, the base 10 is connected to a rotating shaft (not shown) of a pneumatic/power tool by a through hole 11. The tool end 22 of the rotating member 20 is connected to the tool member 90 such as a sleeve; thereby, when the seat body 10 is rotated by the pneumatic/power tool, the rotating force of the seat body 10 is transmitted from the pin 30 to the ball end. 21, the relative displacement between the rotary hole 23 and the latch 30 is generated, and the ball end 21 can be rotated by the plug 30 in the chamber 12, thereby achieving the purpose of driving the tool member 90 for assembly or disassembly.

As shown in FIG. 6, when the relative displacement between the rotary hole 23 and the latch 30 occurs, the latch 30 will reciprocate toward the pin hole 13 at both ends due to the frictional force between the two, and since the length of the latch 30 is less than The ring groove 41 has a diameter. Therefore, the ring groove 41 has a space for allowing the plug 30 to reciprocate, and the pin 30 is prevented from being protruded by the movement of the pin 30, and the sheath 40 is deformed or peeled off. Moreover, the movement margin of the pin 30 generated by the ring groove 41 prevents the relative displacement between the pin 30 and the rotary hole 23 from causing the pin 30 to wear, thereby eliminating the problems such as the strength reduction and breakage of the pin 30. Since the sheath 40 is covered on the outer side of the pin hole 13 and the pin 30, the effect of the stopper can be surely produced, and the pin hole 13 does not fall off even if the pin hole 13 is worn.

Furthermore, the first pressing surface 45 and the second pressing surface 46 are disposed at both sides of the adjacent ring groove 41, which effectively enhances the effect of fixing the ring groove 41, and prevents the impact of the pin 30 during the reciprocating displacement of the pin 30. The sleeve 40 displacement affects the alignment of the ring groove 41 with the pin 30.

From the above detailed description, it will be apparent to those skilled in the art that the present invention is indeed quite different from the conventional technology and has considerable novelty. Moreover, this creation has the unpredictable effects of conventional technology, and it has already met the positive requirements of patent approval, and has filed a patent application according to law.

Although the present invention has been described in terms of a preferred embodiment, those skilled in the art can make various changes in various forms without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. All kinds of modifications or changes that are not in violation of the spirit of this creation are all in the scope of this creative intention.

10‧‧‧ body
11‧‧‧Contact hole
12‧‧ ‧ room
13‧‧‧ pinhole
14‧‧‧ stage
15‧‧‧ positioning slot
16‧‧‧Slanted Cone
20‧‧‧Rotating parts
21‧‧‧ ball end
22‧‧‧Tool side
23‧‧‧Rotate
24‧‧‧ Push against spring
30‧‧‧Tram
40‧‧‧ sheath
41‧‧‧ Ring groove
42‧‧‧Spring slot
43‧‧‧ Positioning spring
44‧‧‧ Guide surface
45‧‧‧First pressing face
46‧‧‧Secondary face
90‧‧‧Tools

[Fig. 1] is a schematic view of the stereoscopic combination of the present creation. [Fig. 2] is a schematic exploded perspective view of the present invention. [Fig. 3] is a schematic cross-sectional view of the present creation. FIG. 4 is an enlarged partial cross-sectional view of FIG. 3 of the present creation. FIG. [Fig. 5] is a schematic diagram of the cross-sectional action of the present creation. [Fig. 6] is a partially enlarged schematic view of Fig. 5 of the present creation.

10‧‧‧ body

12‧‧ ‧ room

13‧‧‧ pinhole

14‧‧‧ stage

15‧‧‧ positioning slot

16‧‧‧Slanted Cone

20‧‧‧Rotating parts

21‧‧‧ ball end

22‧‧‧Tool side

23‧‧‧Rotate

24‧‧‧ Push against spring

30‧‧‧Tram

40‧‧‧ sheath

41‧‧‧ Ring groove

42‧‧‧Spring slot

43‧‧‧ Positioning spring

44‧‧‧ Guide surface

45‧‧‧First pressing face

46‧‧‧Secondary face

Claims (10)

A universal joint structure comprising: a body having a receiving hole at one end and a cavity at the other end, and a pair of pin holes are arranged in a radial direction of the seat body; The movable member has a ball end at one end and a tool end connected by a tool member at the other end; wherein the ball end is provided with a tapped hole at both ends; a pin, The through hole and the pair of pin holes are bored to rotatably receive the ball end in the chamber; and a sheath is attached to the outer periphery of the body end of the body The sleeve has a ring groove on the inner circumference of the sheath, and the ring groove is positioned outside the pair of pin holes. The universal joint structure according to claim 1, wherein the seat body has a stepped surface having a smaller radial dimension at a periphery of the one end of the chamber, and the surface is provided for the sheath sleeve fixer. . The universal joint structure according to claim 2, wherein the inner circumference of the sheath is concavely provided with a spring groove, wherein a positioning spring is accommodated therein, and a positioning groove is recessed at the stage surface. The positioning groove is adapted to be positioned by the positioning spring, and the sheath is positioned at the end of the seat. The universal joint structure according to claim 3, wherein the positioning spring is a C-type spring having an outer diameter smaller than the spring groove and an inner diameter larger than the positioning groove. The universal joint structure according to claim 2, wherein the stage is provided with a radially tapered inclined taper surface on one side of the near rotating member, and one end of the inner circumference of the sheath is also provided. There is a radially divergent guiding surface. The universal joint structure according to claim 2, wherein the inner circumference of the sheath and the stage surface are tightly fitted and fixed. The universal joint structure according to claim 6, wherein the inner circumference of the sheath is respectively provided with a first pressing surface and a second pressing surface on both sides of the annular groove. The universal joint structure according to claim 1, wherein the ball end is provided with a pushing spring between the ball end and the chamber. The universal joint structure according to claim 1, wherein the two ends of the bolt are a spherical end, and the ring groove is a circular arc groove. The universal joint structure according to claim 1, wherein the length of the plug is smaller than the diameter of the ring groove.