TW201643327A - Self-locked positioning screw nut - Google Patents

Abstract

A self-locked positioning screw nut comprises a screw nut body and a screw. The screw nut body is fitted outside a screwing member and comprises a connecting portion, a first positioning block and a second positioning block. The connecting portion, the first and second positioning blocks together define a groove. The first positioning block has multiple first teeth capable of engaging with multiple threads of the screwing member, and the second positioning block has multiple second teeth capable of engaging with the threads. The screw is locked with the screw nut body and is capable of changing the width of the groove corresponding to the axis, and enabling the first teeth and the second teeth simultaneously engaging with the threads of the screwing member. Thus, the present invention may stably position the screw nut with respect to the screwing member and has a large locking area without collapsing threads.

Description

Self-locking nut

The present invention relates to a locking device, and more particularly to a self-locking nut.

Referring to FIG. 1 and FIG. 2 , a positioning nut can be locked to a screw member 1 extending along an axis L and having a plurality of screws 101. The positioning nut includes a nut body 2 and a screw 3 . The nut body 2 has a C-shaped cross section perpendicular to the axis L, and has an inner peripheral surface 201 provided with an internal thread 206, an outer peripheral surface 202, and a radially extending outer peripheral surface 202 through the inner peripheral surface 201. A notch 203, a locking hole 204 disposed on one side of the notch 203 and perpendicular to the axis L, and a screw hole 205 disposed on the other side of the notch 203 and perpendicular to the axis L. The screw 3 is threaded through the locking hole 204 and can be screwed to the screw hole 205.

When the nut body 2 is screwed on the screw member 1 and the screw 3 is locked, the width of the notch 203 can be changed, and the inner diameter of the inner hole formed by the inner circumferential surface 201 can be changed. The internal thread 206 of the inner circumferential surface 201 is tightened to the screw member 1 in the radial direction, and the internal thread 206 of the inner circumferential surface 201 is engageable with the thread 101 of the screw member 1.

Although the positioning nut can be fixed to the screw member 1, When the screw lock 1 is a hollow tubular body having a thin wall thickness and is suitable for mounting a piston, and the locking force of the screw 3 is large, the positioning nut may cause the inside of the screw lock 1 Deformation of the hole will cause the piston to become stuck and not operate smoothly.

As shown in Figure 3, there is another positioning nut that can also be locked. A screw member 4 extending along an axis L and having a plurality of threads 401, the positioning nut comprising a nut body 5 and a screw 6 having a hollow ring perpendicular to the axis L The inner circumferential surface 501, an outer circumferential surface 502, and a screw hole 503 extending radially from the outer circumferential surface 502 to the inner circumferential surface 501 are provided with screw teeth 504. The screw 6 is screwed to the screw hole 503.

When the nut body 5 is screwed to the screw member 4, and the screw is locked When the wire 6 is pressed, the end of the screw 6 is pressed onto the screw member 4, so that the positioning nut can be fixed to the screw member 1.

This positioning nut still has the locking force for operating the screw 6. Larger, the positioning nut may cause deformation of the inner hole of the screw member 4, resulting in a problem that the piston is easily caught and cannot operate smoothly. Moreover, when the end of the screw 6 is pressed against the screw member 4, the thread 401 may be broken.

In addition, the positioning nut locks the screw member 4 The end of the screw member 4 is abutted against the screw member 4 such that the nut body 5 is radially displaceable relative to the screw member 4, but the thread of the thread body 5 504 only one side of the part (ie, the left side of FIG. 3) and the screw of the screw lock 4 are engaged, the occlusal area is small, and the locking effect is also better. Not good.

As shown in FIG. 4, a conventional fixing method of the transformer box 7 is also shown. The main screw 701 is screwed onto a bolt 702. In order to achieve a better locking effect, the bolt 702 generally protrudes from the bottom of the transformer box 7 to a large length, so that it is not only easy to cause The danger of walking and kicking, and the bolt 702 is long and costly.

Accordingly, it is an object of the present invention to provide a self-locking nut having a simple structure, a large nip area, and a good locking effect.

Therefore, the present invention can be self-locking nut, and is suitable for locking to a screw lock. The screw lock member extends along an axis and has a plurality of threaded teeth. The self-locking nut includes a nut body and a screw. . The nut body is sleeved on the outside of the screw member, and includes a connecting portion on one side of the axis, a pair of first positioning blocks that are axially coupled to one side of the connecting portion and have a hollow ring shape, and a pair of should a second positioning block that is coupled to the other side of the connecting portion and has a hollow ring shape. The connecting portion, the first positioning block and the second positioning block jointly define a channel, and the first positioning block has a surrounding a first inner annular surface of the axis and a plurality of first helical teeth disposed on the first inner annular surface and engageable with the threaded teeth, the second positioning block having a second inner annular surface surrounding the axis and a plurality of a second screw tooth disposed on the second inner ring surface and engageable with the thread. The screw is parallel to the axis and is locked to the nut body to change the width of the channel corresponding to the axis, and the first screw and the second screw are simultaneously engaged with the thread.

The effect of the invention: utilizing the channel of the nut body and the The first positioning block and the second positioning block cooperate to change the width of the channel when the screw is locked, so that the first screw teeth and the second screw teeth simultaneously mesh with the snails The tooth not only has a large occlusal area, but also has a good locking effect, and can avoid deformation of the screw lock and avoid the breakage of the screw.

100‧‧‧ Positioning nut

10‧‧‧The nut body

11‧‧‧Connecting Department

111‧‧‧ inside edge

12‧‧‧First positioning block

121‧‧‧First inner annulus

122‧‧‧First thread

123‧‧‧Keyhole

13‧‧‧Second positioning block

131‧‧‧Second inner annulus

132‧‧‧Second screw

133‧‧‧ screw holes

14‧‧‧ first end face

15‧‧‧second end face

16‧‧‧Week

17‧‧‧ channel

20‧‧‧ screws

21‧‧‧ head

22‧‧‧ Screw Department

200‧‧‧ Screw locks

L‧‧‧ axis

210‧‧‧ thread

300‧‧‧ Shock absorbers

310‧‧‧ piston parts

400‧‧‧Transformation box

200’‧‧‧ screw locks

100'‧‧‧ Positioning Nuts

10’‧‧‧ Nut Body

11’‧‧‧Connecting Department

12’‧‧‧First positioning block

121’‧‧‧First inner annulus

122’‧‧‧First thread

123’‧‧‧ screw hole

13’‧‧‧Second positioning block

131’‧‧‧Second inner annulus

132’‧‧‧Second screw

133’‧‧‧ positioning surface

14’‧‧‧ first end

15’‧‧‧second end face

16’‧‧‧Week

17’‧‧‧ channel

20’‧‧‧ screws

21’‧‧‧ head

22’‧‧‧ Screw Department

Other features and effects of the present invention will be apparent from the detailed description of embodiments with reference to the drawings. FIG. 1 is a perspective view of a conventional positioning nut, illustrating that the positioning nut is locked to a screw lock. Figure 2 is a schematic cross-sectional view of a conventional positioning nut; Figure 3 is a plan view of another conventional positioning nut, illustrating that the positioning nut is locked to a screw; Figure 4 is a conventional power conversion FIG. 5 is a perspective view showing a first embodiment of the self-locking nut of the present invention locked to a screw lock; FIG. 6 is a plan view of the box. A plan exploded view of a first embodiment of the present invention, illustrating a state in which a screw has not been locked to a nut body; FIG. 7 is a schematic cross-sectional view of a first embodiment of the present invention; FIG. FIG. 9 is a schematic view of another installation of the first embodiment of the present invention, illustrating a structure for locking a transformer box; FIG. 10 is a plane decomposition. Signal , Illustrate the present invention may be self-locking screw bit A second embodiment of the cap is locked to a screw; and Figure 11 is a cross-sectional view of a combination of the second embodiment of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 5, FIG. 6, and FIG. 7, the first embodiment of the self-locking nut 100 of the present invention is suitably locked to a screw member 200. The screw member 200 extends along an axis L and has a plurality of screws. The tooth 210 includes a nut body 10 and a screw 20 .

The nut body 10 is sleeved on the outside of the screw member 200 and includes a connecting portion 11 on one side of the axis L, and a pair of first hollow shafts connected to the side of the connecting portion 11 a positioning block 12, a pair of second positioning blocks 13 which are connected to the other side of the connecting portion 11 and have a hollow ring shape, a first end surface 14 disposed on the first positioning block 12, and a line L along the axis L a connecting portion 11 opposite to the first end surface 14 and the second end surface 15 of the second positioning block 13 and a peripheral surface 16 connected between the circumference of the first end surface 14 and the circumference of the second end surface 15 The first positioning block 12 and the second positioning block 13 together define a channel 17 .

The first positioning block 12 has a first inner ring surface 121 surrounding the axis L, a plurality of first screw teeth 122 disposed on the first inner ring surface 121 and engageable with the threaded teeth 210, and a relative connection The portion 11 is parallel to the keyhole L of the axis L.

The second positioning block 13 has a second inner annular surface 131 surrounding the axis L, and is disposed on the second inner annular surface 131 and engages with the thread. The second screw 132 of the 210 and a screw hole 133 opposite to the connecting portion 11 and parallel to the axis L, the screw hole 133 corresponding to the locking hole 123.

The channel 17 is between the first end surface 14 and the second end surface 15 Between and perpendicular to the axis L, the connecting portion 11 corresponds to one side of the circumferential surface 16, and the channel 17 extends from the other side of the circumferential surface 16 toward the connecting portion 11. The connecting portion 11 has an inner edge 111 adjacent to the channel 17 , and the inner edge 111 corresponds to the first inner annular surface 121 and the second inner annular surface 122 .

The screw 20 is parallel to the axis L and locked to the nut body 10, the width of the channel 17 corresponding to the axis L can be changed, and the first screw teeth 122 and the second screw teeth 132 are simultaneously meshed with the screw teeth 210. In this embodiment, the screw 20 has a head portion 21 corresponding to the first end surface 14 and a screw portion 22 connected to the head portion 21 and passing through the locking hole 123 and screwed into the screw hole 133. The first positioning block 12 and the second positioning block 13 are brought toward each other toward the channel 17 .

As shown in FIG. 6, when the positioning nut 100 is temporarily screwed On the screw member 200, the screw 20 is not yet screwed onto the nut body 10, so the first thread 122 of the first positioning block 12 and the thread of the screw member 200 are There is a rotational gap between the 210 and the second helical teeth 132 of the second positioning block 13 and the thread 210 of the screw member 200, that is, the first portion of the first positioning block 12 Both the helical teeth 122 and the second helical teeth 132 of the second positioning block 13 are not tightly engaged with the threads 210.

As shown in FIG. 7, when the screw 20 is locked, the screw is utilized. The rod portion 22 is screwed with respect to the screw hole 133, so that the width of the channel 17 corresponding to the axis L is reduced, and the first positioning block 12 and the second positioning block 13 are directed toward the channel 17 Approaching toward each other, such that the first helical teeth 122 of the first positioning block 12 and the thread 210 of the screw member 200, and the second helical teeth of the second positioning block 13 The rotation gap between the 132 and the screw 210 of the screw member 200 is eliminated, and the first screw teeth 122 of the first positioning block 12 and the second screw teeth 132 of the second positioning block 13 can be simultaneously Pressing the screw 210 tightly can ensure that the positioning nut 100 has a stable position relative to the screw member 200, and the positioning nut 100 can be prevented from rotating relative to the screw member 200, and the majority is utilized. The action of the first thread 122 of the ring engaging the thread 210 of the screw member 200, and the engagement of the plurality of second thread teeth 132 with the thread 210 of the screw member 200, The occlusal area is large and the locking effect is good.

As shown in FIG. 8, when the positioning nut 100 is used for locking one The shock absorber 300, and when the screw lock 200 is engaged with a piston member 310, since the screw lock 200 is not subjected to the pressing force in the radial direction, it can be ensured that the radial diameter is not deformed, and the When the thread 210 is broken, the normal operation and service life of the shock absorber 300 can be maintained.

As shown in FIG. 9, when the positioning nut 100 is used for locking one When the power box 400 is assembled, and the positioning nut 100 is engaged with a screw-shaped screw member 200', the height of the screw member 200' protruding from the base of the power box 400 can be reduced, and the cost is relatively low. The lower and strong locking force, the positioning nut 100 can provide a larger cross-sectional area, which can reduce the risk of walking and kicking.

Referring to Figures 10 and 11, the present invention is self-locking nut 100' The second embodiment includes a nut body 10' and a screw 20'.

The nut body 10' is sleeved on the outside of the screw lock 200, and is wrapped a connecting portion 11' located on one side of the axis L, a pair of first positioning blocks 12' having a hollow ring shape on the side of the connecting portion 11', and a pair of axis L being coupled to the connection a second positioning block 13' having a hollow ring shape on the other side of the portion 11', a first end surface 14' disposed on the first positioning block 12', and a first end surface 14' along the axis L and a second end surface 15' of the second positioning block 13', a peripheral surface 16' connected between the periphery of the first end surface 14' and the periphery of the second end surface 15', the connecting portion 11', the first A positioning block 12' and the second positioning block 13' together define a channel 17'.

The first positioning block 12' has a first one around the axis L The inner ring surface 121', a plurality of first screw teeth 122' disposed on the first inner ring surface 121' and engageable with the thread 210, and a screw hole 123 parallel to the connecting portion 11 and parallel to the axis L '.

The second positioning block 13' has a second surrounding the axis L An inner annular surface 131', a plurality of second helical teeth 132' disposed on the second inner annular surface 131' and engageable with the threaded teeth 210, and a positioning surface 133' adjacent to the channel 17'. The face 133' corresponds to the screw hole 123'.

The screw 20' has a head corresponding to the first end face 14' 21' and a screw portion 22' connected to the head portion 21' and screwed to the screw hole 123', the end of the screw portion 22' abutting against the positioning surface 133'.

As shown in Figure 11, when the screw 20' is locked, the screw is utilized. The stem portion 22' is precessed with respect to the screw hole 123' and the end of the screw portion 22' Abutting the positioning surface 133 ′, the width of the channel 17 ′ corresponding to the axis L can be increased, and the first positioning block 12 ′ and the second positioning block 13 ′ are opposite to the channel 17 . 'Reversely away, such that between the first thread 122' of the first positioning block 12' and the thread 210 of the screw member 200, and the second positioning block 13' The rotational gap between the second thread 132' and the thread 210 of the screw member 200 is eliminated, and the first thread 122' of the first positioning block 12' and the second positioning block 13' The second threaded teeth 132' can be simultaneously tightly engaged on the threaded teeth 210, which can ensure that the positioning nut 100' is stable relative to the screwing member 200, and the positioning nut 100' can be prevented from being The screw locks 200 are relatively rotated, and the plurality of turns of the first threaded teeth 122' mesh with the threaded teeth 210 of the screw lock member 200, and the plurality of turns of the second threaded teeth 132' and the screw lock member 200 The engagement of the thread 210 allows the occlusal area to be large and the locking effect to be good. Therefore, the same objects and effects as those of the first embodiment can be produced.

In summary, the structure of the present invention can indeed achieve the hair For the purpose of clarity, and can be widely applied to different locking devices.

However, the above is only an embodiment of the present invention, when The scope of the present invention is not limited thereto, and all equivalent changes and modifications made in the scope of the invention and the patent specification are still within the scope of the invention.

100‧‧‧ Positioning nut

10‧‧‧The nut body

11‧‧‧Connecting Department

111‧‧‧ inside edge

12‧‧‧First positioning block

121‧‧‧First inner annulus

122‧‧‧First thread

123‧‧‧Keyhole

13‧‧‧Second positioning block

131‧‧‧Second inner annulus

132‧‧‧Second screw

133‧‧‧ screw holes

14‧‧‧ first end face

15‧‧‧second end face

16‧‧‧Week

17‧‧‧ channel

20‧‧‧ screws

21‧‧‧ head

22‧‧‧ Screw Department

200‧‧‧ Screw locks

L‧‧‧ axis

210‧‧‧ thread

Claims (9)

The utility model relates to a self-locking nut which is suitable for locking on a screw lock. The screw lock member extends along an axis and has a plurality of threaded teeth. The self-locking nut includes: a nut body, sleeved on the nut The outer portion of the screw member includes a connecting portion on one side of the axis, a pair of first positioning blocks that are axially coupled to one side of the connecting portion and are hollow in a ring shape, and a pair of shafts that are axially coupled to the connecting portion and a second positioning block having a hollow annular shape, the connecting portion, the first positioning block and the second positioning block jointly defining a channel, the first positioning block having a first inner annular surface surrounding the axis And a plurality of first helical teeth disposed on the first inner annular surface and engageable with the threaded teeth, the second positioning block having a second inner annular surface surrounding the axis and a plurality of second inner annular surfaces disposed on the second inner annular surface And engaging a second thread of the thread; and a screw parallel to the axis and locked to the nut body, the width of the channel corresponding to the axis can be changed, and the first screw and the first screw The second helical teeth are simultaneously engaged with the threads. The self-locking nut according to claim 1, wherein the screw causes the first positioning block and the second positioning block to face toward the channel. The self-locking nut according to claim 2, wherein the first positioning block of the nut body further has a first end surface, a first end surface opposite to the first end surface along the axis, and the second positioning block is disposed a second end surface, a circumferential surface connected between the circumference of the first end surface and the periphery of the second end surface, the channel being disposed between the first end surface and the second end surface and intersecting the axis, the connection Corresponding to one side of the circumferential surface, the channel is further by the circumferential surface One side extends toward the connecting portion. The self-locking nut according to claim 3, wherein the connecting portion of the nut body has an inner edge adjacent to the channel, the inner edge corresponding to the first inner ring surface and the second inner portion Inner torus. The self-locking nut according to claim 4, wherein the first positioning block of the nut body further has a locking hole parallel to the connecting portion and the axis, the second positioning block further has a a screw hole corresponding to the connecting portion and parallel to the axis, the screw hole corresponding to the locking hole, the screw having a head corresponding to the first end surface and a connecting to the head and passing through the locking hole and screwing Locked to the screw portion of the screw hole. The self-locking nut according to claim 1, wherein the screw causes the first positioning block and the second positioning block to be oppositely opposite to the channel. The self-locking nut according to claim 6, wherein the nut body further includes a first end surface disposed on the first positioning block, and a first end surface opposite to the first positioning block, and is disposed on the first end surface a second end surface of the second positioning block, a circumferential surface connected between the circumference of the first end surface and the periphery of the second end surface, the channel being between the first end surface and the second end surface and intersecting the axis The connecting portion corresponds to one side of the circumferential surface, and the channel extends from the other side of the circumferential surface toward the connecting portion. The self-locking nut according to claim 7, wherein the connecting portion of the nut body has an inner edge adjacent to the channel, the inner edge corresponding to the first inner ring surface and the second inner portion Inner torus. The self-locking nut according to claim 8, wherein the nut body is The first positioning block further has a screw hole parallel to the connecting portion and parallel to the axis, the second positioning block further has a positioning surface adjacent to the channel, the screw has a corresponding to the first end surface The head and a screw portion connected to the head and screwed to the screw hole, the end of the screw portion can abut against the positioning surface.