CN209903071U - Novel anti-skid strong sleeve - Google Patents

Abstract

The utility model discloses a novel anti-skid strong sleeve, which comprises a body and is of a columnar structure; the sleeve part is provided with a bayonet for embedding the head of a nut or a bolt and is positioned at one end of the body, a plurality of clamping surfaces are arranged in the bayonet, and each clamping surface is provided with at least one sawtooth-shaped convex edge; the rotating part is positioned at one end of the body, which is far away from the sleeve part, and is provided with a clamping part which is clamped with an external instrument so as to apply torque for forcing the body to rotate to the body; body, sleeve portion, rotating portion three integrated into one piece, the traditional sleeve in market relatively, the powerful sleeve of this application can be good drive hexagonal nut or the bolt head that has worn and torn exert and increase torsion, be convenient for its dismantlement or installation, the telescopic structure of this application has increased the area of contact with hexagon bolt or nut, relative frictional force increase to the torsion that makes the bolt receive can be bigger, dismantles bolt or nut more easily.

Description

Novel anti-skid strong sleeve

Technical Field

The utility model belongs to the technical field of the sleeve, specifically speaking relates to a novel powerful sleeve of antiskid.

Background

As is known, socket wrenches are generally used to turn bolts or nuts with very small or deep recesses, and generally comprise a handle, a quadrangular-prism-shaped joint and a socket head with a hexagonal hole, wherein the socket heads and the joints of different sizes are cooperatively connected to realize the assembly and disassembly of the bolts or nuts of different sizes.

The socket of the traditional socket wrench is hexagonal or an integral multiple of six polygonal, the bolt or the nut is clamped by a plurality of groups of clamping surfaces in parallel in every two in the socket, in order to conveniently and quickly sleeve the sleeve on the bolt or the nut, the bayonet has a certain clearance with the bolt or the nut, so that when the bolt or the nut is unscrewed or screwed, the bayonet can rotate relative to the bolt or the nut, this causes the torque of the clamping surfaces to be concentrated on the bolt or the surface of the nut near its edge, however, the strength of the bolt or the nut near the edge is often low, so that under the action of a large torque, the position of the acting force is seriously deformed and displaced, and even peeled off from the bolt or the nut, so that the bolt or the nut slips, and the bolt or the nut is difficult to detach or mount.

In addition, the conventional socket is very easy to slip during the process of applying torque to the nut or bolt head with the hexagonal worn out, so that the socket is difficult to disassemble or tighten.

Disclosure of Invention

The utility model aims at providing a novel powerful sleeve of antiskid, it is anticipated that it leads to on the bolt easily or the nut skids and nut or the bolt head that has worn and torn are difficult to dismantle or the installation problem under the condition of great moment of torsion to solve traditional sleeve.

In order to solve the technical problem, the purpose of the utility model is to realize like this:

a novel anti-skid strong sleeve comprises

The body is of a columnar structure;

the sleeve part is provided with a bayonet for embedding the head of a nut or a bolt and is positioned at one end of the body, a plurality of clamping surfaces are arranged in the bayonet, and each clamping surface is provided with at least one sawtooth-shaped convex edge;

the rotating part is positioned at one end of the body, which is far away from the sleeve part, and is provided with a clamping part which is clamped with an external instrument so as to apply torque for forcing the body to rotate to the body;

the body, the sleeve portion and the rotating portion are integrally formed.

On the basis of the above scheme and as a preferable scheme of the scheme: the cross section of the bayonet is a regular polygon, the number of sides of the regular polygon is 6+ (6 x n), and n is zero or a positive integer.

On the basis of the above scheme and as a preferable scheme of the scheme: and the adjacent sawtooth-shaped convex ridges are centrosymmetric relative to the vertex of the regular polygon between the two sawtooth-shaped convex ridges.

On the basis of the above scheme and as a preferable scheme of the scheme: the vertex of the sawtooth-shaped convex edge is transited to the clamping surface through the first inclined surface and the second inclined surface, the width of the first inclined surface is larger than that of the second inclined surface, and an included angle between the first inclined surface and the second inclined surface is an obtuse angle.

On the basis of the above scheme and as a preferable scheme of the scheme: the intersecting line of the first inclined planes of the two adjacent sawtooth-shaped convex ridges is superposed with the edge of the bayonet.

On the basis of the above scheme and as a preferable scheme of the scheme: the rotating part is provided with a clamping groove for clamping an external instrument.

On the basis of the above scheme and as a preferable scheme of the scheme: a semicircular groove is formed at the edge position of the clamping groove.

On the basis of the above scheme and as a preferable scheme of the scheme: the bayonet and the clamping portion are provided with arc-shaped guide portions.

On the basis of the above scheme and as a preferable scheme of the scheme: the outer peripheral surface of the sleeve portion is tapered, and the outer diameter of the sleeve portion at the opening of the bayonet is the smallest.

On the basis of the above scheme and as a preferable scheme of the scheme: the outer wall of the rotating part is provided with a through hole.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

1. compared with the traditional sleeve in the market, the high-strength sleeve can well drive the hexagonal worn nut or bolt head to exert large torque, and is convenient to disassemble or assemble.

Due to the existence of the sawtooth-shaped convex edges, the sleeve does not or only slightly rotate relative to the nut or the bolt head in the process of applying torque to the sleeve, so that the action point of the torque is prevented from being applied to the position, close to the edge, of the nut or the bolt head, and the nut or the bolt head is prevented from slipping;

3. the serrated ribs can be well clamped at the position where the acting force of the nut or the bolt head is applied in the process of applying torque, and further sliding of the sleeve relative to the nut or the bolt head is prevented.

The telescopic structure of this application has increased the area of contact with hex bolts or nut, and relative frictional force increases to the torsion that makes the bolt receive can be bigger, dismantles bolt or nut more easily.

Drawings

Fig. 1 is a perspective view of the overall structure of the present invention;

fig. 2 is another perspective view of the overall structure of the present invention;

FIG. 3 is a front view of the overall structure of the present invention;

fig. 4 is a rear view of the overall structure of the present invention;

fig. 5 is a right side view of the overall structure of the present invention;

FIG. 6 is a sectional view of the overall structure A-A of the present invention;

fig. 7 is a bottom view of the overall structure of the present invention;

FIG. 8 is a sectional view of the overall structure B-B of the present invention;

FIG. 9 is a schematic view of a bayonet configuration;

FIG. 10 is a schematic view of a conventional sleeve bayonet configuration;

fig. 11 is a schematic view of the present invention rotating the nut clockwise;

fig. 12 is a schematic view of the counterclockwise rotating nut of the present invention.

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to fig. 1 to 12 of the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Referring to FIGS. 1-4, a novel anti-slip strong sleeve comprises

A body 10 having a columnar structure;

the sleeve part 20 is provided with a bayonet 21 for embedding the head of a nut or a bolt, and is positioned at one end of the body 10, a plurality of clamping surfaces 211 are arranged in the bayonet 21, and each clamping surface 211 is provided with at least one sawtooth-shaped convex rib 212;

the rotating part 30 is positioned at one end of the body 10 far away from the sleeve part 20 and is provided with a clamping part 31, and the clamping part 31 is clamped with an external instrument so as to apply torque for forcing the body 10 to rotate to the body;

the body, the sleeve portion and the rotating portion are integrally formed.

It should be noted that the external device is a handle, a connecting rod, or other device or apparatus that applies torque to the sleeve to drive the sleeve to rotate the nut.

The clamping surfaces of the sleeve of the existing socket wrench are hexagonal or an integral multiple polygon of six, the clamping surfaces of the clamping surfaces clamp the bolt or the nut in a pairwise parallel manner, so that the sleeve can be conveniently and quickly sleeved on the bolt or the nut, a certain gap is formed between the clamping surfaces and the bolt or the nut, the clamping surfaces can rotate relative to the bolt or the nut when the bolt or the nut is unscrewed or screwed, the torque of the clamping surfaces can be concentrated on the surface of the bolt or the surface of the nut close to the edge of the bolt or the nut, but the strength of the position of the bolt or the position of the nut close to the edge is often low, and under the action of large torque, the position of an acting force is seriously deformed, displaced and even stripped from the bolt or the nut, so that the bolt or the nut slips;

therefore, the novel anti-skidding powerful sleeve is designed, is used for installing or disassembling threaded fasteners such as hexagon head bolts and nuts, can be suitable for occasions where a common wrench cannot be used due to narrow space, can be used for placing the sleeve part 20 in the narrow space and sleeving the sleeve part outside the nut, and solves the problem that the sleeve is easy to slip with the threaded fasteners such as the hexagon head bolts and the nuts.

The sleeve is used for nuts and bolts with a hexagonal head structure; specifically, the cross section of the bayonet 21 of the sleeve portion 20 is a regular polygon, the number of sides of the regular polygon is 6+ (6 × n), and n is zero or a positive integer, so that the bayonet can be better matched with an inner hexagonal head structure.

In order to enable the sleeve to drive the nut to rotate, the action force applied to the nut by the sleeve is prevented from being unbalanced, in the embodiment, the adjacent serrated protruding ridges 212 are symmetrical relative to the center of the vertex of the regular polygon between the two, and the spaced serrated protruding ridges 212 are symmetrical relative to the center of the axis of the body 10, so that in the process of time torque of the sleeve on the nut, the action force which is contacted with the nut and applies the action force is equal to the distance from the axis of the nut, the action force applied to the nut is equal to the axis of the nut, and the distribution of the action force is more uniform.

Further, in order to prevent the serrated protruding edge 212 of the sleeve from being damaged under the action of a large torque, thereby improving the bearing strength of the sleeve, in this embodiment, the vertex of the serrated protruding edge 212 of the sleeve is transited to the clamping surface 211 through the first inclined surface 2121 and the second inclined surface 2122, the width of the first inclined surface 2121 is greater than the width of the second inclined surface 2122, and the included angle between the first inclined surface 2121 and the second inclined surface 2122 is an obtuse angle, the first inclined surface 2121 deviates from the direction of the acting force applied by the serrated protruding edge 212 to the nut, because the larger the torque applied by the sleeve to the nut is, the larger the reaction force applied by the nut to the serrated protruding edge 212 is, the direction of the reaction force is approximately parallel to the first inclined surface 2121, the arrangement of the obtuse angle and the arrangement of the first inclined surface 2121 with the larger width enable the serrated protruding edge 212 to have higher strength and pressure bearing capacity, thereby enabling the serrated protruding, the service life of the sleeve is prolonged, and the nut or the bolt is better guaranteed to be easily detached or reach enough pretightening force under the action of large torque.

Referring to fig. 9, it is preferable that the intersection line of the first inclined surfaces 212a1, 212b1 of two adjacent serrated ribs 212a, 212b coincides with the edge of the bayonet 21, and the second inclined surfaces 212a2, 212b2 intersect with the clamping surface. Such a structural arrangement may further improve the strength of the serrated ribs 212 and improve the structural integrity of the sleeve.

With reference to fig. 4 to 8, further, in order to facilitate connection between an external instrument and the sleeve and transmission of torque, the rotating portion 30 has a clamping groove 31 for clamping the external instrument, and in consideration of the universality between the clamping groove and the external instrument and the convenience of connection, in this embodiment, the clamping groove 31 is preferably a quadrilateral shape, and the quadrilateral structure can be connected and matched with other instruments or devices that apply torque to the sleeve, such as a handle and a connecting rod, so as to drive the sleeve to drive the nut to rotate, thereby improving the universality.

In order to further improve the applicability and the universality of the clamping part 30 on other instruments or equipment which apply torque to the sleeve, such as a handle, a connecting rod and the like so as to drive the sleeve to drive the nut to rotate; also for the convenience handle, connect other drive sleeve that apply the moment of torsion to the sleeve such as pole and drive nut pivoted apparatus or equipment and draw-in groove 31's dismouting, there is a semicircular groove at the edge place position of draw-in groove 31 in this embodiment, the edge sets up the structure of semicircular groove and makes at the handle, connect the in-process that the pole equals the draw-in groove to connect, even the handle, the edge that connects pole etc. have different chamfers, the utility model discloses an adaptation that the draw-in groove all can be fine reduces to the handle, connects connection size requirements such as pole.

Preferably, the opening of the bayonet slot 31 of the bayonet 21 and the clamping portion 30 is provided with an arc-shaped guiding portion 213/315 which is recessed into the opening, when the bayonet slot is sleeved on the bolt and nut and the clamping portion is connected with the handle and the connecting rod, the bolt and nut or the handle and the connecting rod can conveniently enter the bayonet slot or the clamping portion, compared with the bayonet slot or the bayonet slot without a guiding portion, the structure is convenient for the bolt and nut or the handle and the connecting rod to quickly position along the radian of the guiding arc to enter the corresponding bayonet slot or the clamping portion.

It is worth mentioning that the front end of the sleeve portion 20 is a tapered section 12, the outer peripheral surface of the tapered section is tapered, and the outer diameter of the opening of the bayonet 21 is the smallest, the tapered section 12 can reduce the weight of the sleeve and reduce the usage amount of materials, and compared with the equal-diameter sleeve portion, the tapered section is easier to enter a narrow space, and is suitable for the dismounting operation of the bolt and the nut in the narrow space.

Further, the handle, the connecting rod and the like are in a clamping structure with the clamping groove 31 of the rotating part 30, so that the handle, the connecting rod and the like are in clearance fit with the clamping groove, the sleeve is easy to fall off from the handle, the connecting rod and the like when the sleeve is used vertically downwards or obliquely downwards and is slightly clamped with a bolt and a nut, and the sleeve is inconvenient to use and operate, and in order to solve the problem, the through hole 13 is formed in the outer wall of the rotating part 30 in the embodiment.

The handle, connect pole etc. all to have the locking mechanism who comprises spring and steel ball at its link, at the handle, connect the in-process that pole etc. inserted draw-in groove 31, the handle, connect the interior surface that the steel ball on pole etc. can be by the draw-in groove and extrude to the link inwards, along with the continuation of link inserts, the steel ball moves the position to through-hole 13, partly impress the steel ball in through-hole 13 under the effect of spring, realize the handle, connect pole etc. and sleeve locking, thereby in vertical downward operation and downward sloping operation process, keep the handle throughout, connect pole etc. and telescopic good being connected.

Preferably, the snap-in portion 30 has a semicircular annular groove 11 on the outer circumference.

Preferably, the bayonet 21 is communicated with the clamping groove 31 through the hollow through hole 314, and the depth of the bayonet 21 is increased after the bayonet 21 is communicated, so that the screw head or the nut with more thickness specifications can be accommodated, and meanwhile, as the depth of the bayonet is increased, the screw head or the nut which is extruded from some screw heads can be screwed more; in addition, the structure is more beneficial to the sleeve electroplating processing, and in the sleeve electroplating process, the structure is more beneficial to the current passing relative to the blind hole structure, so that the adhesion of an electroplating coating is increased.

In addition, in order to make the card slot 31 easy to form, a tapered hole 313 is provided at the bottom of the card slot 31, and the tapered hole 313 provides a receiving space for the broaching tool, which is more beneficial to form the card slot.

The principles of the present invention are further analyzed in conjunction with fig. 10-12:

fig. 10 shows a conventional hexagonal socket, which has a hexagonal bayonet 21 ', and during clockwise rotation of the socket, due to the clearance between the clamping surface 22 ' of the socket and the nut, the socket is rotated by a certain amount relative to the nut until the nut is pressed against the clamping surface 22 ' at a position close to the edge of the hexagonal head of the nut, and due to the strength of the nut around the edge of the hexagonal head of the nut, the point of application of the torque around the edge of the hexagonal head of the nut is further deformed or displaced with further increase of the torque, which results in further relative rotation, i.e., sliding, of the socket relative to the nut; if the torque increases sufficiently, it causes the location of the applied force to become severely deformed, displaced or even stripped from the nut, resulting in slippage of the nut 40.

Referring to fig. 11 and 12, when the sleeve rotates clockwise, the serrated ribs in the bayonet all contact with the surface of the nut and abut against the surface of the nut, and the direction of the acting force of the serrated ribs abutting against the nut deflects towards the center of the nut, so that the acting force of the sleeve passing through the nut is prevented from being excessively concentrated towards the edge of the nut, the nut is prevented from being seriously deformed, displaced or even stripped from the nut, and meanwhile, the nut is prevented from sliding or rotating relative to the sleeve; as the torque is further increased, the sides of the nut abut the first angled surfaces 212b1 of the serrations 212b (see dashed lines in fig. 11), which then further distributes the force between the sleeve and the nut, preventing the force from being too concentrated, and also further resisting slippage or relative rotation of the nut relative to the sleeve.

Similarly, when the sleeve rotates anticlockwise, the serrated ribs in the bayonet are all contacted with the surface of the nut and abut against the surface of the nut, the acting force direction of the serrated ribs and the nut abutting against the nut deflects to the center of the nut, the acting force of the sleeve passing through the nut is prevented from being excessively concentrated to the edge of the nut, along with further increase of the torque, the side face of the nut abuts against the first inclined face 212a1 of the serrated rib 212a (see a dotted line in fig. 12), the acting force between the sleeve and the nut is further dispersed after the abutment, the acting force is prevented from being excessively concentrated, and the nut is further prevented from sliding or rotating relative to the sleeve.

It should be noted that only two of the saw-tooth ridges 212a and 212b are analyzed here, and the functional relationship between the other saw-tooth ridges and the nut is the same as that described above, and will not be described again here.

In addition, the bayonet of the sleeve in the present embodiment is a hexagonal structure, but it is not limited to the sleeve with a hexagonal bayonet.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. A novel anti-skid strong sleeve is characterized by comprising

The body is of a columnar structure;

the sleeve part is provided with a bayonet for embedding the head of a nut or a bolt and is positioned at one end of the body, a plurality of clamping surfaces are arranged in the bayonet, and each clamping surface is provided with at least one sawtooth-shaped convex edge;

the rotating part is positioned at one end of the body, which is far away from the sleeve part, and is provided with a clamping part which is clamped with an external instrument so as to apply torque for forcing the body to rotate to the body;

the body, the sleeve portion and the rotating portion are integrally formed.

2. A novel slip resistant power sleeve as claimed in claim 1 wherein: the cross section of the bayonet is a regular polygon, the number of sides of the regular polygon is 6+ (6 x n), and n is zero or a positive integer.

3. A novel slip resistant power sleeve as claimed in claim 2 wherein: and the adjacent sawtooth-shaped convex ridges are centrosymmetric relative to the vertex of the regular polygon between the two sawtooth-shaped convex ridges.

4. A new slip resistant power sleeve as claimed in claim 3 wherein: the vertex of the sawtooth-shaped convex edge is transited to the clamping surface through the first inclined surface and the second inclined surface, the width of the first inclined surface is larger than that of the second inclined surface, and an included angle between the first inclined surface and the second inclined surface is an obtuse angle.

5. The novel slip resistant power sleeve as claimed in claim 4 wherein: the intersecting line of the first inclined planes of the two adjacent sawtooth-shaped convex ridges is superposed with the edge of the bayonet.

6. A novel slip resistant power sleeve as claimed in claim 1 wherein: the rotating part is provided with a clamping groove for clamping an external instrument.

7. A new slip resistant power sleeve as claimed in claim 6 wherein: a semicircular groove is formed at the edge position of the clamping groove.

8. A novel slip resistant power sleeve as claimed in claim 1 wherein: the bayonet and the clamping portion are provided with arc-shaped guide portions.

9. A novel slip resistant power sleeve as claimed in claim 1 wherein: the outer peripheral surface of the sleeve portion is tapered, and the outer diameter of the sleeve portion at the opening of the bayonet is the smallest.

10. A novel slip resistant power sleeve as claimed in claim 1 wherein: the outer wall of the rotating part is provided with a through hole.

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