CN102235435A

CN102235435A - Universal joint

Info

Publication number: CN102235435A
Application number: CN2010101749616A
Authority: CN
Inventors: 陈佳益
Original assignee: YUANLIXING INDUSTRIAL CO LTD
Current assignee: YUANLIXING INDUSTRIAL CO LTD
Priority date: 2010-04-28
Filing date: 2010-04-28
Publication date: 2011-11-09
Anticipated expiration: 2030-04-28
Also published as: CN102235435B

Abstract

The invention relates to a universal joint which comprises a rod body, an adapter and an intervening part, wherein the bottom of the rod body is provided with a block body, and the top of the rod body is provided with a first driving part; the top of the adapter is provided with an accommodating groove, a second driven part is arranged on the bottom of the adapter, the peripheral wall surface of the upper section of the accommodating groove on the adapter is provided with a ring groove, a limited ring is arranged in the ring groove, and the block body is accommodated in the accommodating groove; the surface of the block body is provided with at least one groove, the surface of one side of the block body extends from top to bottom so as to form the groove; the peripheral wall surface of the accommodating groove on the adapter is provided with at least one corresponding groove, when the block body is placed in the corresponding groove, and the corresponding groove corresponds to the groove of the surface of the block body surface; and the at least one intermediate part is connected with the corresponding groove and the groove and positioned between the block body and the adapter, therefore, the effect of smooth operation is achieved by virtue of the intermediate part connected between the corresponding groove and the groove.

Description

Universal joint

Technical field

The present invention is relevant with hand tools, particularly instigates a kind of universal joint that is used for hand tools.

Background technique

Existing universal joint, be mostly with two members be connected with group formed, for example U. S. Patent discloses No. 2009/0288523 patent (the relative case patent of TaiWan, China is M340894 number) in early days, has promptly disclosed a kind of universal joint.Disclosed one first body of rod and one second body of rod in this case, an end of this first body of rod is a polygonal spheroid, and an end of this second body of rod is a containing groove, can be installed with for this polygonal spheroid, and this containing groove and this polygonal spheroid is the blocking of face and face; The opening end of this containing groove is provided with a groove and fixes setting for a limiting component, the polygonal spheroid can be limited in the containing groove.

Aforementioned existing universal joint in use, utilize the blocking of the face of this containing groove and this polygonal spheroid and face to concern and prevent of the axial rotation of this polygonal spheroid with respect to this containing groove, however again can by this polygonal spheroid be located in this containing groove relation and can be in prespecified range swing in predetermined angle.Whereby, can reach the effect of universal adapting, and make this first body of rod and second body of rod can not rotate relatively again and can reach as the function of use after the instrument switching.

Aforementioned existing universal joint owing to be the relative swing relation of utilizing between polygonal spheroid and the containing groove, therefore is the slip that offsets of perisporium with the surface of polygonal spheroid and containing groove in the use, has the sensation that has some setbacks on operating.

In addition, U.S. US 6 is still arranged, 869, No. 366 patents, in this case graphic, the bottom that has disclosed the body of rod (drivensocket 14) of its top has a plurality of protruding parts (channels 32), these protruding parts 32 cooperate the inner fovea part (inwardly extending protrusions 52) that is positioned at the below body of rod (driver12), by the matching relationship of this kind phase embedding reach can universal rotation and again can be not vertically effect in relative rotation, and then reach the effect of universal adapting.And 6,152, No. 826 patents of the U.S. US that same claimant applied for also have similar structure, and have identical effect.

Two above-mentioned U.S.'s cases all are to utilize protruding part 32 and inner fovea part 52 relative embeddings, so as to the effect that reaches universal adapting.Yet in the operation of reality, when the body of rod of top turned to respect to the body of rod of below, these protruding parts 32 promptly can be moved in these inner fovea parts 52, also were subjected to these inner fovea parts 52 simultaneously and limited.This shows, the top body of rod is when turning to, the displacement that its protruding part produced, must contain by these inner fovea parts 52 fully, therefore, these inner fovea parts 52 must have the stroke that certain length just can contain these protruding parts, and in other words, the below body of rod must have certain length could be provided with the inner fovea part that these have predetermined length.This kind structure can make that overall structure is bigger, and the materials cost on making also increases.

Summary of the invention

Main purpose of the present invention is to provide a kind of universal joint, and it has effect more smoothly in operation.

Another object of the present invention is to provide a kind of universal joint, its volume can be littler than prior art.

In order to reach aforementioned purpose, according to a kind of universal joint provided by the present invention, include: a body of rod, bottom have a block, and the top has one first drive portion; One adapter, top have a containing groove, and the bottom has one second drive portion, and the peripheral wall surfaces of this adapter fragment position on this containing groove is provided with an annular groove, are provided with a limited ring in this annular groove, and this block is placed in this containing groove; This block surface has at least one groove, and this groove is extended from top to bottom and formed by the surface of this block one side; This adapter is provided with at least one corresponding groove in the peripheral wall surfaces of this containing groove, and when this block placed this containing groove, this corresponding groove was corresponding to the groove of this block surface; And at least one intermediate piece, join in this corresponding groove and this groove and between this block and this adapter.Therefore, can reach by the handing-over between this corresponding groove and this groove of this intermediate piece and operate effect smoothly.

Description of drawings

Fig. 1 is the exploded perspective view of the present invention's first preferred embodiment.

Fig. 2 is the cross-sectional schematic of the present invention's first preferred embodiment, shows the state that the body of rod separates with adapter.

Fig. 3 is another cross-sectional schematic of the present invention's first preferred embodiment, shows the state of the body of rod and adapter combination.

Fig. 4 is the action diagram of the present invention's first preferred embodiment.

Fig. 5 is another structural representation of the present invention's first preferred embodiment, shows that annular groove is positioned at the state of corresponding groove top.

Fig. 6 is the exploded perspective view of the present invention's second preferred embodiment.

Fig. 7 is the cross-sectional schematic of the present invention's second preferred embodiment, shows the state when sleeve is positioned at primary importance.

Fig. 8 is another cross-sectional schematic of the present invention's second preferred embodiment, shows the state when sleeve is positioned at the second place.

Embodiment

In order to describe structure of the present invention and characteristics place in detail, lift following preferred embodiment now and cooperate graphic explanation as after, wherein:

As shown in Figure 1 to Figure 3, a kind of universal joint 10 that the present invention's first preferred embodiment is provided mainly is made up of a body of rod 11, an adapter 21 and a plurality of intermediate piece 29, wherein:

This body of rod 11, bottom have a block 12, and the top has one first drive portion 16.This block 12 is a spheroid in the present embodiment.

This adapter 21, the top has a containing groove 22, the bottom has one second drive portion 24, the peripheral wall surfaces of this adapter 21 fragment position on this containing groove 22 is provided with an annular groove 26, in this annular groove 26, be provided with a limited ring 261, this block 12 is placed in this containing groove 22, and it is spacing and can not break away from this adapter 21 to be subjected to 261 of this limited rings.This limited ring 261 has a breach 262 in present embodiment, c-shaped.And on the implementation, also can not establish breach and directly clamp-on in this annular groove 26.

These block 12 surfaces have a plurality of grooves 18, are two grooves 18 in the present embodiment, are located at the side of this block 12 in equally spaced mode each other, and these grooves 18 are extended from top to bottom and formed by these block 12 sides.

This adapter 21 is provided with a plurality of corresponding grooves 28 in the peripheral wall surfaces of this containing groove 22, is two corresponding grooves 28 in the present embodiment, and when this block 12 placed this containing groove 22, these corresponding grooves 28 corresponded respectively to respectively respectively this groove 18 on these block 12 surfaces.In the present embodiment, these corresponding grooves 2 are interfered in this annular groove 26, and this annular groove 26 is positioned at the last fragment position of these corresponding grooves 28.

Again, as shown in Figure 4, also this annular groove 26 ' can be arranged at the top of these corresponding grooves 28 ', can allow this limited ring 261 have the effect that limits this block 12 (being shown in Fig. 3) equally.

These intermediate pieces 29 are ball in the present embodiment, and its quantity is two, place this corresponding groove 28 and this groove 18 respectively, and between this block 12 and this adapter 21.

The structure of first embodiment of the invention more than has been described, next this first embodiment's of explanation serviceability.

In use, with first drive portion 16 of this body of rod 11 and second drive portion, 24 difference socket one instrument and workpiece (for example nut) (instrument and workpiece are not shown among the figure) of this adapter 21, rotate this body of rod 11 by this instrument, and then drive this workpiece rotation of these adapter 21 interlocks, reach the effect of steering operation.Wherein, the body of rod 11 and adapter 21 are connected to the mode of instrument and workpiece owing to be known technology, therefore no longer with graphic representation it.

When turning to, as shown in Figure 5, operate this body of rod 11 with respect to these adapter 21 swings to predetermined angle, in the process of swing, in this containing groove 22, rotate by this block 12.And in rotating process, between these corresponding grooves 28 and groove 18, and make this block 12 more smooth and easy with respect to the rotation of this adapter 21 by the rolling of intermediate piece 29 by these intermediate pieces 29.In addition, again since these intermediate pieces 29 between these corresponding grooves 28 and groove 18, therefore this block 12 is when rotating, only can be according to rotated along these grooves 18 by force direction, or rotate along the position of this intermediate piece 29, can not be arbitrarily in this containing groove 22 along the axial rotation of this body of rod 11; Therefore, this body of rod 11 only can be done the swing of any direction with respect to this adapter 21, and can not rotate vertically with respect to this adapter 21, rotates thereby can drive this adapter 21 when driving these body of rod 11 rotations, reaches the function of universal adapting.

In the present embodiment, these intermediate pieces 29 are example with the ball, the variation of other kind form of these intermediate pieces 29 (for example object of non-spherical shape), and also the claim by this case is contained.

Please consult Fig. 6 to Fig. 8 again, a kind of universal joint 30 that the present invention's second preferred embodiment is provided is taken off first embodiment before mainly generally being same as, and difference is:

More include a sleeve 51, be placed in this adapter 41 movably and can between a primary importance (being the position of the sleeve shown in Fig. 7) and a second place (being the position of the sleeve shown in Fig. 8), move, these sleeve 51 tops have a spacing edge 52, this spacing edge 52 is formed by these sleeve 51 tops predetermined width that extends internally, and the bore of this spacing edge 52 is less than the bore of the containing groove 42 of this adapter 41.

These block 32 surfaces have four grooves 38, and this adapter 41 also has four corresponding grooves 48 and corresponds respectively to respectively this groove 38, in addition, have also that four intermediate pieces 49 are corresponding respectively to be provided with.

This body of rod 31 has ring-type shoulder face 35, and the bore of the spacing edge 52 of this sleeve 51 is greater than the bore of ring-type shoulder face 35, and when this sleeve 51 was positioned at this second place, this spacing edge 52 was positioned at around this ring-type shoulder face 35 and limits this body of rod 31 it can not be turned to.

When this sleeve 51 is positioned at this primary importance, this spacing edge 52 is butted on the periphery top of containing groove 42 notches of this adapter 41 downwards, when this sleeve 51 was positioned at this second place, this spacing edge 52 was positioned at around this body of rod 31 and limits this body of rod 31 it can not be turned to.

These adapter 41 outer surfaces have an interdiction piece 47, this interdiction piece 47 be located at this adapter 41 and by the effect of a spring 471 outwards elasticity stretch out predetermined length; The internal surface bottom of this sleeve 51 has a cyclic rib 54.When this sleeve 51 was positioned at this second place, this this cyclic rib 54 of interdiction piece 47 blocks broke away from this adapter 41 so as to avoiding this sleeve 51 up to move again.

In this second embodiment, the Extreme breadth of these corresponding grooves 48 is greater than the Extreme breadth of these intermediate pieces 49.

Next this second embodiment's operating state is described.

This body of rod 31 of this second embodiment with respect to the swing of this adapter 41 and can not be vertically situation in relative rotation, take off first embodiment before generally being same as.And this second embodiment's sleeve 51 when primary importance as shown in Figure 7, is can this body of rod 31 not to be construed as limiting, and in operation is as ditto taking off first embodiment.When this sleeve 51 was positioned at as shown in Figure 8 the second place, this spacing edge 52 promptly was positioned at around the ring-type shoulder face 35 of this body of rod 31, and limited this body of rod 31 it can not be turned to, and this moment, this second embodiment did not have the conversion adapter that turns to.

In addition, in Fig. 6 of this second embodiment, can see that these grooves 38 are more close above this block 32, and when the middle section position of this block 32 be relatively away from.Therefore, at this body of rod 31 during with respect to these adapter 41 swings, on these intermediate pieces 49 move to respect to these grooves 38 during fragment position, can be mutually close because of the relation of these grooves 38.At this moment, because the Extreme breadth of these corresponding grooves 48 is greater than the Extreme breadth of these intermediate pieces 49, so these corresponding grooves 48 are that these intermediate pieces 49 of tolerable promptly do not have near, this body of rod 31 mutually and are difficult to the problem operating or be snapped to.

This second embodiment is available for users to select the switching whether desiring to turn to.

What must remark additionally is, this second embodiment the Extreme breadth of illustrational these corresponding grooves 48 greater than the Extreme breadth of these intermediate pieces 49, it only is a kind of enforcement state, other kind mode, for example the Extreme breadth of these grooves 38 is greater than the Extreme breadth of these intermediate pieces 49, or the Extreme breadth of these grooves 38 and these corresponding grooves 48 is all greater than the structure of the Extreme breadth of these intermediate pieces 49, the simple change that all only is this second embodiment is used, and should be this case claim and contains.

In summary, the attainable effect of the present invention is:

One, turn to comparatively smooth and easy: be arranged between block and this adapter by these intermediate pieces, the intermediary that can turn to respect to this adapter as this block, and these intermediate pieces join between these corresponding grooves and these grooves, and are under this kind structure, comparatively smooth and easy in the operation that turns to.

Two, volume is less: by structure of the present invention, can make corresponding groove only need limit intermediary rolls in it and gets final product, therefore corresponding groove need not have predetermined length, and then can reduce the length requirement of this adapter, whole volume thereby can more dwindle than prior art.

Three, can select to turn to or do not turn to: by the sleeve of second embodiment of the invention, the user can move to this sleeve the state that primary importance can turn to this body of rod place, also this sleeve can be moved to the second place and this body of rod is restricted and in stays, can allow the user have more operation to select whereby.

Claims

1. universal joint includes:

One body of rod, bottom have a block, and the top has one first drive portion;

One adapter, top have a containing groove, and the bottom has one second drive portion, and the peripheral wall surfaces of this adapter fragment position on this containing groove is provided with an annular groove, are provided with a limited ring in this annular groove, and this block is placed in this containing groove;

It is characterized in that:

This block surface has at least one groove, and this groove is extended from top to bottom and formed by the surface of this block one side;

This adapter is provided with at least one corresponding groove in the peripheral wall surfaces of this containing groove, and when this block placed this containing groove, this corresponding groove was corresponding to the groove of this block surface;

More include:

At least one intermediate piece joins in this corresponding groove and this groove and between this block and this adapter.

2. universal joint according to claim 1 is characterized in that: the annular groove of this adapter is positioned at the top of this corresponding groove.

3. universal joint according to claim 1 is characterized in that: this corresponding groove is interfered in this annular groove, and this annular groove is positioned at the last fragment position of this corresponding groove.

4. universal joint according to claim 1 is characterized in that: this limited ring has a breach, and is c-shaped.

5. universal joint according to claim 1 is characterized in that: the quantity of the groove of this block surface is a plurality of, is located at the side of this block in equally spaced mode each other; The quantity of this corresponding groove is a plurality of, and corresponds respectively to respectively this groove; The quantity of this intermediate piece is a plurality of, joins respectively in this corresponding groove and this groove and between this block and this adapter.

6. universal joint according to claim 5 is characterized in that: the Extreme breadth of these grooves is greater than the Extreme breadth of these intermediate pieces.

7. universal joint according to claim 5 is characterized in that: the Extreme breadth of these corresponding grooves is greater than the Extreme breadth of these intermediate pieces.

8. universal joint according to claim 5 is characterized in that: the Extreme breadth of these grooves and these corresponding grooves is all greater than the Extreme breadth of these intermediate pieces.

9. universal joint according to claim 1 is characterized in that: this intermediate piece is a ball.

10. universal joint according to claim 1, it is characterized in that: more include a sleeve, be placed in this adapter movably and can between a primary importance and a second place, move, the top of this sleeve has a spacing edge, when this sleeve was positioned at this second place, this spacing edge was positioned at around this body of rod and limits this body of rod it can not be turned to.

11. universal joint according to claim 10, it is characterized in that: this sleeve top of this spacing cause predetermined width that extends internally forms, the bore of this spacing edge is less than the bore of the containing groove of this adapter, when this sleeve was positioned at this primary importance, this spacing edge was butted on the periphery top of the containing groove notch of this adapter downwards.

12. universal joint according to claim 11 is characterized in that: the internal surface of this sleeve has a cyclic rib, and this adapter outer surface has an interdiction piece, when this sleeve is positioned at this second place, and this this cyclic rib of interdiction piece block.

13. universal joint according to claim 12 is characterized in that: this interdiction piece be located at this adapter and by the effect of a spring and outwards elasticity stretch out predetermined length.

14. universal joint according to claim 10, it is characterized in that: this body of rod has ring-type shoulder face, the bore of the spacing edge of this sleeve is greater than the bore of this ring-type shoulder face, when this sleeve was positioned at this second place, this spacing edge was positioned at around this ring-type shoulder face and limits this body of rod it can not be turned to.