TWM569673U - Anti-slip socket - Google Patents

Abstract

An anti-slip sleeve comprising: a plurality of engaging portions which are equally spaced from an inner wall of a sleeve and protrude from a center of the sleeve; and a plurality of grooves between the adjacent two engaging portions; The engaging portion has a contour facing the center of the sleeve, the contour surface includes two intersecting slopes and a corner formed by the intersection of the slopes; the engaging portion has the two grooves facing the adjacent sides of the two sides The end angle at which the slope intersects the side surface is an obtuse angle. This creative non-slip sleeve is suitable for general screw firmware, wear screws or severely worn screws. The screw is a nut and a bolt head.

Description

Non-slip sleeve

The present invention relates to a non-slip sleeve that can handle severely worn screws (nuts or bolt heads).

The thirteenth picture shows a conventional hex sleeve structure. The sleeve has a sleeve hole for screwing a nut such as a nut or a bolt head, and the sleeve has six planes for the purpose of facilitating the joint or separation of the sleeve hole and the screw. The width of the sleeve hole is slightly larger than the width of the screw, so that when the sleeve drives the screw to twist, the sleeve hole and the screw have a rotation angle difference, and the sleeve hole only interferes with the top corner of the screw with a partial plane, and the top corner is improperly deformed. , into a worn screw (commonly known as a slip nut or a sliding bolt head). In order to be able to turn the worn screw, as in the fourteenth figure, the sleeve is designed as six arc faces, which form a point contact with the worn screw and can drive the worn screw. However, because the circumference of the arcuate surface of the sleeve is tangent to the circumference of the screw, when the screw is severely worn, the arc surface cannot form a tangent contact with the severely worn screw. In order to solve this problem, as in the fifteenth figure, a rectangular engaging portion is formed on each of the polygonal inner walls of the sleeve hole, and the rectangular engaging portion has a plane and two 90 degree end angles, and the plane of the engaging portion can be worn with the snail The firmware forms a face-to-face contact pattern. However, the disadvantage is that in the case of large torque operation and severe wear of the screw, the 90 degree end angle of the rectangular engaging portion is in contact with the screw, and the end angle of the rectangular engaging portion is improperly deformed until it is worn or broken.

The purpose of this creation is to propose an improved anti-slip sleeve for general screw firmware (nuts and bolt heads), worn or heavily worn screws.

The technical solution of the invention is as follows: a non-slip sleeve, comprising: a plurality of engaging portions which are equally spaced on an inner wall of a sleeve and protrude from a center of the sleeve, and a plurality of adjacent between the two adjacent portions a groove having a contour facing the center of the sleeve, the contour surface comprising two intersecting slopes and a vertex formed by the intersection of the slopes; the engaging portion has two sides facing the adjacent sides The two grooves have an obtuse angle at which the inclined surface intersects the side surface; the two inclined surfaces have the same width; the inclined surface has an inclination angle of 2° to 9°; and the two sides form a central angle of 20° to 60°.

The effect of this creation: The creation of the anti-slip sleeve is suitable for general screw firmware, wear screw firmware or severely worn screws. The screw is a nut and a bolt head.

The different inclination angles of the inclined faces of the sleeve cause the engaging portions to have different contact relationships with the screw, including surface contact and line contact. The surface contact ensures that the sleeve is stably operated, and the screw is rotated, and the peripheral surface of the screw is not damaged, and is suitable for general firmware and wear screw. The line contact creates a snap-fit relationship between the engaging portion and the screw, providing a stronger contact urging force, and is more suitable for operating a severely worn screw.

The structural characteristics such as the inclination angle of the inclined surface of the engaging portion and the central angle of the two side surfaces of the engaging portion can avoid the corner damage screw of the engaging portion, and can increase the structural strength of the engaging portion, and avoid or reduce the engaging portion. A corner breakage has occurred.

The difference between the prior art feature and the prior art of the fifteenth figure is that the prior art engaging portion of the fifteenth figure is rectangular, and the rectangular engaging portion has one plane and two sides. The engaging portion of the present invention includes two inclined faces intersecting and a apex angle formed by the intersection of the two inclined faces. The inclined angle of the inclined surface is 2°~9°. The fifteenth figure rectangular engagement part The two sides intersect the plane at a right angle of 90 degrees. The angle of the center of the two sides of the engaging portion of the creation is 20°~60°. The angle at which the slope intersects the side is greater than 90 degrees. Obtuse angle.

The fifteenth prior art rectangular engaging portion forms a face-to-face contact relationship with the surface of the screw and has only one such contact relationship. Due to the different inclination angles of the inclined surface, the engaging portion and the screw can generate different contact relationships, including surface contact and line contact.

The fifteenth prior art rectangular snap fit is only suitable for general or lightly worn screws. This creation is suitable for general screw firmware, wear screw firmware, and severe wear screws.

In the fifteenth figure, the two sides of the rectangular engaging portion of the prior art intersect the plane at a right angle of 90 degrees, but the 90 degree right angle is fragile in structure, and when the large torque operation and the screw wear are severe, the 90 degree is formed. The phenomenon that the right angle and the screw are in contact with each other causes the 90 degree right angle of the rectangular engaging portion to be deformed by force and wear or break. The design engaging portion has the structural features such as the inclined angle of the inclined surface and the central angle of the two sides of the engaging portion, so that the engaging portion has no angle of 90 degrees or less, and both are obtuse angles larger than 90 degrees, so the creation The structural strength of the engaging portion is better than that of the prior art rectangular engaging portion of the fifteenth figure, and the probability of angular wear or breakage is lowered.

10‧‧‧ sleeve

20‧‧‧Clock Department

21‧‧‧ contour surface

22‧‧‧Slope

24‧‧‧Top corner

26‧‧‧ side

28‧‧‧End angle

29‧‧‧ Groove

31‧‧‧Normal screw firmware

311‧‧‧Corner

312‧‧‧Week

32‧‧‧Abrasion screw firmware

322‧‧‧Week

33‧‧‧Severe wear screw firmware

332‧‧‧Week

A‧‧‧a point on the circumference of the sleeve

B‧‧‧A point on the circumference of the sleeve

Vertical bisector of L‧‧‧ string

S‧‧‧ string

O‧‧‧Sleeve center

P‧‧‧Heart angle

θ ‧‧‧inclination angle of the slope

The first picture is a three-dimensional appearance of the creation of the anti-skid sleeve.

The second picture is a plan view of the creation of the anti-skid sleeve

The third figure is an enlarged view of the engaging portion of the non-slip sleeve.

The fourth figure is a plan view of the general anti-slip sleeve and the general screw.

The fifth picture is an enlarged view of the circle in the fourth figure.

The sixth figure is a schematic plan view of the general anti-slip sleeve pulling the general screw.

The seventh picture is an enlarged view of the circle in the sixth figure.

The eighth figure is a schematic plan view of the anti-slip sleeve and the rotating wear screw.

The ninth picture is an enlarged view of the circle at the eighth figure.

The tenth figure is a schematic plan view of the creation of the anti-slip sleeve and the severe wear screw.

The eleventh figure is an enlarged view of the circle of the tenth figure of the creation.

Fig. 12 is an enlarged view showing another embodiment of the engaging portion of the anti-skid sleeve.

The thirteenth figure is a plan view of a conventional sleeve fitting operation of a general screw.

Figure 14 is a plan view of another conventional sleeve fit operation wear screw.

The fifteenth figure is a plan view of still another conventional sleeve sleeve operation wear screw.

For the convenience of the description, the central idea expressed in the column of the above novel content is expressed by a specific embodiment. The embodiments are depicted in proportions and sizes suitable for the description, rather than in actual dimensions, as set forth above.

As shown in the first to third figures, the creation sleeve 10 is provided with a plurality of engaging portions 20 projecting toward the center of the sleeve 10 and a plurality of grooves between the adjacent two engaging portions 20 at equal intervals on the inner wall. Ditch 29. The engaging portion 20 has a contoured surface 21 facing the center of the sleeve 10. The contoured surface 21 includes two equal-width and intersecting slopes 22 and a vertex 24 formed by the intersection of the slopes 22. The inclination angle θ of each inclined surface 22 is 2°~9°, and the inclination angle is defined by the intersection of the inclined surface 22 and a string S, and the string S refers to the circumference of the sleeve 24 and the circumference of the sleeve 10 A straight line of two points A, B, and the vertical bisector L of the string S passes through the center O of the sleeve. The engaging portion has two side faces 26 respectively facing the two adjacent grooves 29, and the two sides 26 form a central angle P of 20° to 60°. Therefore, the end angle 28 of the inclined surface 22 intersecting the side surface 26 is Obtuse angle.

As shown in the fourth and fifth figures, the sleeve 10 is fitted with a normal screw 31 (nut or bolt head), and the corner 311 of the normal screw 31 corresponds to the groove 29 of the sleeve 10, the normal screw The circumferential surface 312 of 31 corresponds to the contour surface 21 of the engaging portion 10.

As shown in the sixth and seventh figures, the apex angle 24 of the engaging portion 10 and one of the inclined faces 22 of the engaging portion 10 are in contact with and tight with the circumferential surface 312 of the normal screw 31, and the sleeve 10 is operable. The normal screw 31 rotates.

As shown in the eighth and ninth figures, when the sleeve 10 is combined with a wear screw 32 to rotate, the top corner 24 and one of the slopes 22 are in contact with the peripheral surface 322 of the wear screw 32 and are forced.

As shown in the tenth and eleventh figures, when the sleeve 10 is combined with a severe wear screw 33, the apex angle 24 and a portion of one of the slopes 22 are in contact with the circumferential surface 332 of the severe wear screw 33 and Tight.

In the foregoing example, the present sleeve 10 can be in surface contact with the normal screw 31, the wear screw 32, or the severe wear screw 33 by the engaging portion 11, so that the sleeve 10 can drive the screw to rotate.

As shown in the eleventh and twelfth drawings, the inclination angle θ of the inclined surface causes the engaging portion 20 to produce different contact results with the screw 33. In the illustrated example, the severely worn screw 33 is taken as an example. In the eleventh diagram, the inclined angle θ of the inclined surface is 2° to 4°, and the engaging portion 20 and the screw 33 are in surface contact as described above. As shown in the twelfth figure, the inclination angle is 9°, and the apex angle 24 of the engaging portion 20 is in contact with the screw 33, and the engaging portion 20 is in line contact with the screw 33. The severely worn screw 33 can be selected from a sleeve having a large inclined angle θ, by which the peripheral angle 24 is forced and embedded in the peripheral surface 332 of the screw 33, the sleeve 10 and the severely worn screw 33 There is a occlusal relationship between them, and the occlusal relationship produces a stronger contact urging force than the aforementioned surface contact, so that the sleeve 10 can be driven The heavily worn screw 33 rotates.

Further, the inclination angle θ of the inclined surface 22 of the engaging portion 20 and the central angle P of the two side faces 26 of the engaging portion 20 are such that the apex angle 24 and the left and right end angles 28 of the engaging portion 20 are obtuse. The corner damage screw of the engaging portion 20 can be avoided, and the structural strength of the engaging portion 20 can be increased, and the collapse of the engaging portion 20 can be avoided or reduced.

Claims (1)

An anti-slip sleeve comprising: a plurality of engaging portions which are equally spaced from an inner wall of a sleeve and protrude from a center of the sleeve; and a plurality of grooves between the adjacent two engaging portions; The engaging portion has a contour facing the center of the sleeve, the contour surface includes two intersecting slopes and a corner formed by the intersection of the slopes; the engaging portion has the two grooves facing the adjacent sides of the two sides The angle at which the inclined surface intersects the side surface is an obtuse angle; the two inclined surfaces have the same width; the inclined surface has an inclination angle of 2° to 9°; and the two sides form a central angle of 20° to 60°.