CN212928477U

CN212928477U - Buckle type locknut external member

Info

Publication number: CN212928477U
Application number: CN202021353988.7U
Authority: CN
Inventors: 罗章平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-11
Filing date: 2020-07-11
Publication date: 2021-04-09
Anticipated expiration: 2030-07-11

Abstract

The utility model relates to a knot formula locknut external member, it includes nut and base, and the base is located the nut below, and one of the terminal surface that is close to between the two has the boss, and another is fluted rather than corresponding the cooperation, recess and an axial plane symmetry, the boss is corresponding with the recess shape, slightly skew in radial direction, the lateral surface and the lateral surface parallel and level of its body nut or base, when both all assemble the screw rod on, the boss can detain among the recess, along with screwing of nut, the one side of boss makes the nut axis skew to opposite direction with the relative screw rod axis of base axis in radial line direction with the one side contact of recess and extrusion. When the nut is installed and loosened, only a common tool is needed to twist the nut.

Description

Buckle type locknut external member

Technical Field

The utility model belongs to the technical field of machinery and specifically relates to a knot formula locknut external member is related to.

Background

In the aspect of nut anti-loose technology, a typical nut is an anti-loose nut component produced by Hadelock industries, Inc. of Japan nut manufacturers, and the anti-loose nut component consists of an upper nut and a lower nut, wherein one nut is provided with a convex cone, the other nut is provided with a concave cone, one of the convex cone and the concave cone is provided with an eccentric center, when the anti-loose nut component is used, the convex cone and the concave cone are matched with each other and tightened, and then the nuts deviate, so that a screw rod is held tightly to achieve the purpose of not loosening, although the effect is good, the two nuts are required to be used, the requirements on materials are extremely high, the processing precision is good, the cost is greatly improved, the installation is troublesome, the tightness of screwing the first nut needs to be accurately mastered, and because each workpiece does not need to be tightened as well, the tightening can generate larger stress and harmful effects on the workpiece, and the. When the second nut is tightened, it is not convenient to adjust the first nut again, which is relatively cumbersome to use anyway.

Disclosure of Invention

The utility model aims to solve the not enough problem of nut in locking technique among the prior art, provide a simpler, reasonable, the reliability is higher, processing, the simple locking nut of installation.

The utility model relates to a knot formula locknut external member, it includes nut and base, the base is located the nut below, be close to one of terminal surface between the two and have the boss, another is fluted rather than corresponding the cooperation, recess and an axle plane symmetry, the so-called axle plane is the plane through the axis, the boss is corresponding with the recess shape, the boss can be held to the recess, slightly skew in radial direction, the lateral surface is rather than the lateral surface parallel and level of body nut or base, if the boss is established on the nut, the lateral surface then with nut side parallel and level, when both assemble the screw rod on, the boss can be detained among the recess, along with screwing of nut, the one side of boss makes the nut axis skew to the opposite direction with the relative screw rod axis of base axis in the radial direction with the one side contact of recess and extrusion. The lug boss and the groove can be a pair or a plurality of pairs distributed along the radial direction, the lug boss and the groove can be in various shapes, one surface of each lug boss and one surface of each groove are contacted, the two surfaces are mutually extruded when the lug boss and the groove are screwed, the axial line of the nut and the axial line of the base can deviate, the groove or the lug boss can also be arranged at the side end and does not cross the shaft hole or the threaded hole, namely the middle parts of the lug boss and the threaded hole are uninterrupted, the outer side surface of the lug boss is flush with the outer side surface of the nut or the base, if the lug boss is arranged on the nut, the lug boss is consistent with the outer.

In one embodiment, the groove is formed on the upper end surface of the base, the cross section of the groove is in a right trapezoid shape, the groove is a through groove penetrating through the shaft hole of the base in the radial direction, the two ends of the groove are symmetrical in shape, the boss corresponds to the groove in the lower end surface of the nut, and the boss and the groove are slightly deviated in the radial direction of the nut.

The inclined planes of the boss correspond to the inclined planes of the groove, and the two inclined planes are contacted and mutually extruded along with the screwing of the nut, so that the axial line of the nut and the axial line of the base deviate in opposite directions relative to the axial line of the screw rod in the radial direction.

The inclined planes of the lug bosses and the inclined planes of the grooves form included angles of 30-70 degrees with respective axes, the included angles are too small, the longer the base is required, the too large the included angles are required, the larger the screwing force is required, and the 45-degree adjustable angle is moderate.

When the nut starts to be screwed or unscrewed, the boss can drive the base to follow the rotating along the rotating direction and the surface close to the groove, and therefore only one universal wrench can finish the installation and the unloading.

When the boss and the groove of the nut and the base are positively buckled together, the base shaft hole is complete and level and consistent, the shaft hole diameter is weaker than that of a nut threaded hole, the base shaft hole and the boss jointly form a level annular hole, and the inner surface does not contain a thread line, so that the screw rod is not blocked before the nut is screwed.

When the nut and the boss of the base are positively buckled together with the groove, the side faces are complete and flush.

The lower end surface of the nut and the upper end surface of the base are planes vertical to respective axes.

In a special case, the groove is arranged on the upper end face of the base, the cross section of the groove is in a right trapezoid shape, the groove is a through groove penetrating through the shaft hole of the base in the radial direction, the shapes of the two ends of the groove are symmetrical, the cross section of the boss is a circular part, and an included arc forms an arc face corresponding to the inclined face of the groove.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are needed in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the following descriptions of the drawings are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a perspective view of a nut according to an embodiment of the present invention;

fig. 2 is a perspective view of the base according to the embodiment of the present invention;

fig. 3 is a schematic view of a positional relationship between the nut and the base after the nut and the base are assembled according to the embodiment of the present invention;

fig. 4 is a schematic perspective view of a nut, a base, a workpiece (not shown here), and a bolt according to an embodiment of the present invention;

fig. 5 is a schematic sectional view taken along the line a in fig. 4.

Labeling each component: the nut comprises a nut 1, a nut lower end surface 11, a threaded hole 12, a boss 13, a boss front straight surface 132, a boss front inclined surface 131, a boss rear straight surface 134, a boss rear inclined surface 133, a base 2, a base upper end surface 21, a base shaft hole 22, a groove 23, a groove front straight surface 232, a groove front inclined surface 231, a groove rear straight surface 234, a groove rear inclined surface 233, a bolt 3, a screw 31, a nut left side loosening area 313, a nut right side tightening area 311, a base left side tightening area 314, a base right side loosening area 312, a nut axis P, a screw axis O, a base axis Q and a sectioning direction A.

Detailed Description

The description of illustrative embodiments in accordance with the principles of the invention is intended to be read in connection with the accompanying drawings, which are to be part of the entire written description. Any reference or designation to the direction or orientation of parts in the description of the invention disclosed herein (including the claims) is for convenience of description only and does not limit the scope of the invention. For example, relative terms including up, down, left, right, inside, outside, distal, proximal, and the like, are to be understood as referring to the positions in the drawings described above.

Referring to fig. 1 to 5, the locking nut assembly of the buckle type comprises a nut 1 and a base 2, wherein the base 2 is arranged below the nut 1, one of the two adjacent end surfaces is provided with a boss 13, the other groove 23 is correspondingly matched with the boss, the groove 23 is symmetrical to an axial plane, the boss 13 corresponds to the groove 23 in shape and slightly deviates in the radial direction, the outer side surface is flush with the outer side surface of the nut 1 or the base 2 of the body, the boss 13 can be buckled into the groove 23 when the nut 1 and the base are assembled on a screw 31 of a bolt 3, and one surface of the boss 13 is contacted with one surface of the groove 23 and is pressed to make the nut axis P deviate from the base axis Q in the opposite radial direction relative to the screw axis O along with the screwing of the nut 1, as shown in fig. 3 to 5.

In one example, it is easier to machine and install the groove 23 on the upper end surface 21 of the base, the cross section is a right trapezoid, and the groove is a through groove passing through the axial hole 22 of the base in the radial direction, the center of the groove 23 is broken due to the cross-over of the axial hole 22, but the two ends are symmetrical, the boss 13 is similar to the groove 23, the boss 13 on the lower end surface 11 of the nut corresponds to the shape of the groove 23, and the two are slightly deviated in the radial direction of the nut 1, as shown in fig. 3.

The boss inclined planes include a boss front inclined plane 131 and a boss rear inclined plane 133 corresponding to the groove front inclined plane 231 and the groove rear inclined plane 233, respectively, and as the nut 1 is screwed, the inclined planes contact and press each other, so that the nut axis P and the base axis Q are radially deviated in opposite directions with respect to the screw axis O, see the arrow direction of fig. 3. Wherein the boss front inclined surface 131 is pressed with the groove front inclined surface 231, and the boss rear inclined surface 131 is pressed with the groove rear inclined surface 231, see fig. 4 and 5. Referring to fig. 5, a nut left side release area 313, a nut right side tightening area 311, a base left side tightening area 314, and a base right side release area 312 are formed due to the mutual pressing of the inclined grooves. The screw 13 is locked by the base left side squeezing area 314 and the nut right side squeezing area 311, and the nut 1 cannot be loosened.

The inclined planes of the boss comprise a front inclined plane 131 of the boss, a rear inclined plane 133 of the boss, a front inclined plane 231 of the groove and a rear inclined plane 233 of the groove, which correspond to each other, and form an included angle of 30-70 degrees with the respective axes.

When the nut 1 starts to be screwed or unscrewed, the boss 13 and the surface close to the groove 23 can drive the base to rotate along the rotating direction. On the screw thread of the clockwise screw rod 31, when screwing the nut 1, the boss front straight surface 132 pushes the groove front straight surface 232 to enable the nut 1 to drive the base 2 to rotate clockwise, when loosening the nut 1, the nut 1 is rotated anticlockwise, the boss rear straight surface 134 pushes the groove rear straight surface 234 to rotate anticlockwise, therefore, when installing the nut 1 and loosening the nut 1, only a common tool is needed to twist the nut 1.

When the bosses 13 and the grooves 23 of the nut 1 and the base 2 are positively buckled together, the base shaft hole 22 is complete, level and consistent, and the hole diameter is weaker than that of the nut threaded hole 12, so that the installation is convenient.

When the nut 1 and the boss 13 and the groove 23 of the base are positively buckled together, the side surfaces are complete and flush.

The lower end surface of the nut 1 and the upper end surface of the base 2 are planes vertical to respective axes.

In another example, the groove 23 is a right trapezoid in cross section at the upper end surface 21 of the base, and is a through groove passing through the axle hole 22 of the base in the radial direction, the two ends are symmetrical in shape, the cross section of the boss is a section containing an arc line on one side, and the arc line forms an arc corresponding to the inclined surface of the groove (the boss is not shown here).

The utility model discloses knot formula locknut external member only needs a nut to add a packing ring, and processing is simple, and the installation is easy.

The above is only the embodiments of the present invention, not limited to this, the present invention can also make the embodiments of the boss and the groove of various shapes, but all the changes and improvements of the shape, the position relationship of the components, etc. made by the essence, the principle and the thought of the present invention are included in the scope of the present invention.

Claims

1. The utility model provides a knot formula locknut external member, includes nut and base, its characterized in that, the base is located the nut below, and one of being close to the terminal surface between the two has the boss, and another recess is rather than corresponding the cooperation, recess and an axial plane symmetry, boss and recess shape are corresponding, and slightly skew in radial direction, when both assemble the screw rod on, the boss can detain in the recess, along with screwing of nut, the one side contact and the extrusion of boss make nut axis and the relative screw rod axis of base axis deviate to opposite direction on the radial line direction with the one side contact of recess.

2. The buckle-type locknut kit according to claim 1, wherein: the groove is arranged on the upper end face of the base, the cross section of the groove is in a right trapezoid shape, the groove is a through groove penetrating through the shaft hole of the base in the radial direction, the shapes of two ends of the groove are symmetrical, the boss is arranged on the lower end face of the nut and corresponds to the shape of the groove, and the boss and the groove are slightly deviated in the radial direction of the nut.

3. The buckle-type locknut kit according to claim 2, wherein: the inclined planes of the boss correspond to the inclined planes of the groove, and the two inclined planes are contacted and mutually extruded along with the screwing of the nut, so that the axial line of the nut and the axial line of the base deviate in opposite directions relative to the axial line of the screw rod in the radial direction.

4. A button-type locknut kit according to claim 3, wherein: the inclined planes of the boss and the inclined planes of the groove are both planes, and the included angle between each plane and the respective axis is 30-70 degrees.

5. The buckle-type locknut kit according to claim 1, wherein: when the nut starts to be screwed or unscrewed, the boss can drive the base to rotate along the rotating direction and the surface close to the groove.

6. The buckle-type locknut kit according to claim 1, wherein: when the nut and the boss of the base are positively buckled together with the groove, the shaft hole of the base is complete, level and consistent, and the shaft hole diameter of the base is larger than that of the nut thread.

7. The button-type locknut kit according to claim 1 or 6, characterized in that: when the nut and the boss of the base are positively buckled together with the groove, the side faces are complete and flush.

8. The buckle-type locknut kit according to claim 1, wherein: the lower end face of the nut and the upper end face of the base are planes perpendicular to respective axes.

9. The buckle-type locknut kit according to claim 1, wherein: the groove is arranged on the upper end face of the base, the cross section of the groove is in a right trapezoid shape, the groove is a through groove which penetrates through the shaft hole of the base in the radial direction, the shapes of two ends of the groove are symmetrical, the cross section of the boss contains a section of arc line on one side, and the arc line forms an arc face corresponding to the inclined face of the groove.

10. The buckle-type locknut kit according to claim 1, wherein: the lug bosses and the grooves are designed in pairs, and more than one pair of lug bosses and grooves are distributed along the radial direction.