CN111843898B

CN111843898B - Self-locking mute needle roller wrench

Info

Publication number: CN111843898B
Application number: CN202010744334.5A
Authority: CN
Inventors: 唐排良
Original assignee: Anyang Tuxin Motor Vehicle Appraisal Co ltd
Current assignee: Anyang Tuxin Motor Vehicle Appraisal Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-08-06
Anticipated expiration: 2040-07-29
Also published as: WO2022022134A1; CN111843898A

Abstract

A self-locking silent roller pin spanner belongs to the field of spanners, wherein an end part of a handle is integrally connected with an annular body, annular card grooves are formed in the inner peripheries of the upper end and the lower end of the annular body, a plurality of roller pins are arranged between the annular card grooves in the upper end and the lower end of the inner periphery of the annular body, the end surface structure of the roller pins is of a special structure, an inner polygonal ratchet ring is arranged in the inner periphery of the plurality of roller pins, steps are arranged on the outer peripheries of the two ends of the ratchet ring, and the steps are positioned in the annular card.

Description

Self-locking mute needle roller wrench

Technical Field

The invention relates to a wrench, in particular to a self-locking mute needle roller wrench, and belongs to the field of wrenches.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other opening or trepanning fasteners for clamping the bolts or nuts by utilizing the lever principle. The wrench is typically made of structural steel of carbon or alloy material.

The wrench is generally provided with an opening or a trepan for clamping the bolt or the nut at one end or two ends of the handle portion, and when the wrench is used, external force is applied to the handle portion along the thread rotating direction, so that the bolt or the nut can be screwed.

The common adjustable spanner and solid wrench are limited by the installation position of the bolt or the nut sometimes, the adjustable spanner and the solid wrench cannot be clamped into the rotation position of the bolt head or the nut, even if the adjustable spanner and the solid wrench can be sleeved on the bolt head or the nut, the periphery of the adjustable spanner and the solid wrench cannot rotate with other objects, and in the screwing process, the adjustable spanner and the solid wrench are taken out from the bolt head or the nut each time in use and then clamped into the bolt or the nut to rotate, so that the use efficiency is low, and the operation is very troublesome; the socket wrench overcomes the problems of an adjustable wrench and a solid wrench to a certain extent, but still needs to be sleeved in a bolt or a nut, compared with the ratchet wrench, the ratchet wrench can avoid the operation of repeatedly taking down and then sleeving the bolt and the nut, thereby greatly improving the operation efficiency, but the engagement angle between the ratchet and the ratchet in the ratchet wrench is certain, generally the ratchet is between 37 and 38 teeth, and the maximum is 75 teeth, wherein the minimum angle is not influenced in the general use, but the bearing capacity of the gear is reduced along with the increase of the number of the teeth of the ratchet, the rotation angle is still larger for the equipment with compact structure and high precision requirement, the gear cannot rotate in a tiny space, and the gear can be limited under certain conditions, although the rotation angle between the gears can be reduced, in contrast, torque is greatly reduced, and service life of the ratchet wrench is affected, so that a 75-tooth ratchet wrench is generally a small-torque ratchet wrench, and in addition, the ratchet wrench brings certain noise due to the action of a spring for meshing between a ratchet and a ratchet, and brings a troublesome mood to people in long-term use.

Disclosure of Invention

Aiming at the conditions of low use efficiency and large rotation angle of a wrench in the use process in the current market, the invention provides a self-locking mute needle roller wrench, and aims to expand the rotation freedom of the wrench, reduce the noise in use and improve the convenience of the wrench under the condition of not reducing the torque of the wrench.

The invention has the following positive effects: the utility model provides a from locking-type silence bearing pin spanner, includes the spanner handle, handle tip an organic whole is connected with the ring body, and the interior circumference in both ends is provided with annular card groove about the ring body, and it has a plurality of kingpins to arrange between the annular card groove at both ends about the interior circumference of ring body, and the equation of bearing pin terminal surface in polar coordinate system is:

inner polygonal ratchet rings are arranged on the inner peripheries of the plurality of rolling needles, steps are arranged on the outer peripheries of two ends of each ratchet ring, and the steps at the two ends are positioned between the two annular clamping pieces;

furthermore, the plurality of rolling needles are the same in shape, grooves are formed in the peripheries of the rolling needles, O-shaped rings are arranged in the grooves, and the O-shaped rings are metal elastic rings or rubber rings;

further, the annular clamping piece comprises an outer periphery and an inner periphery which are connected into a whole, the inner periphery of the annular clamping piece is a horizontal plane, the outer periphery of the annular clamping piece is an inclined plane, an included angle is formed between the inclined plane of the outer periphery of the annular clamping piece and the horizontal plane of the inner periphery of the annular clamping piece, and the horizontal plane and the inclined plane are in the same horizontal plane in an assembly state;

further, an annular needle roller frame is arranged among the plurality of needle rollers, and the annular needle roller frame is arranged among the annular card grooves at the upper end and the lower end of the inner periphery of the annular body;

furthermore, the peripheries of the rolling needles are smooth surfaces, and the lengths of the rolling needles are smaller than or equal to the spacing between the annular card grooves at two ends;

further, an axial groove in the axial direction is formed in the roller pin;

further, the opposite end of the annular body of the wrench handle is a smooth end, a solid wrench, a ratchet wrench or a socket wrench;

further, the wrench can pull the bolt or the nut to rotate within a small angle range of 0.5-360 degrees.

The invention has the following positive effects: the annular clamping grooves are formed in the inner peripheries of the upper end and the lower end of the annular body at the end part of the wrench, so that the annular clamping pieces can be arranged in the annular body, and the plurality of rolling needles and the ratchet ring can be limited in the annular body, so that a plurality of parts are assembled into a whole; by machining the end faces of a plurality of needles

The structure of (1), can be when the spanner rotates towards a direction locking between a plurality of kingpins, mutual separation when rotating towards opposite direction, dead abnormal situation appears blocking when this kind of structure can prevent the locking, can guarantee the normal switching between locking and the separation, the flexibility of spanner has greatly been improved, this kind of mechanism, the turned angle of reducible spanner, even also can implement the rotation of bolt or nut under the condition of 0.5 angle, not only can be used for the rotation of wide-angle, and can be used for the small-angle rotation of narrow range, the precision and the application range of spanner have greatly been improved, through setting up the recess in the periphery of roller bearing, can be equipped with the recess in the recess, can be equipped with the locking between a plurality of kingpinsThe O-shaped rings are arranged, so that the roller pins can be close to each other, the contact gap between the roller pins is further reduced, the angle of the wrench for rotating the bolt and the nut is reduced, and the precision of rotating the bolt and the nut is improved; the steps are arranged on the peripheries of the two ends of the ratchet ring, and the rolling needle and the ratchet ring can be assembled on the inner periphery of the annular body by utilizing an annular clamping piece; the annular clamping piece is designed to have an inclined surface at the outer periphery and a horizontal surface at the inner periphery, so that the needle roller and the ratchet ring can be limited in the range of the clamping grooves at the upper end and the lower end by utilizing the angle elasticity of the annular clamping piece, and the integral structure of the wrench is simplified; through setting up the axial slot, greatly improved the speed of assembly, can ensure the discernment to the kingpin angle in the assembling process, prevent because the spanner that the wrong equipment brought rotates the appearance of problem, detect through professional mechanism, its moment of torsion of the spanner of this kind of structure surpasss national standard 5 many, its life-span surpasss the same dimension ratchet spanner far away, 8 times many that is the same dimension, the precision improves 10 times, this kind of structure can be under the condition that does not reduce the spanner moment of torsion, enlarge the rotational degree of freedom of spanner, reduce the noise in the use, improve the convenience of spanner.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Figure 2 is a schematic diagram of a garment structure without a loop card.

Figure 3 is a schematic view of the structure along a longitudinal section of the annular body.

Fig. 4 needle end faces in polar coordinates.

Fig. 5 is a schematic structural view of the end face of the needle roller.

FIG. 6 is a schematic top view of a ring card.

FIG. 7 is a schematic cross-sectional view of the ring card of FIG. 4 taken along line A-A before assembly.

FIG. 8 is a cross-sectional view of the assembled annular card taken along line A-A of FIG. 4.

Description of reference numerals: 10-wrench handle, 11-annular body, 12-ratchet ring, 13-annular clamping piece, 13 a-horizontal plane, 13 b-inclined plane, 14-rolling needle, 14 a-end face chamfer, 15-groove, 16-O-ring, 17-step, 18-axial groove and 20-solid wrench.

Detailed Description

The present invention will be described with reference to the accompanying drawings, wherein the orientation of the inner hole of the annular body 11 in the horizontal state is described in the up-down direction, for example: the vertical direction is the up-down direction of the inner hole of the ring-shaped body 11.

The invention has the positive effects that the invention is a self-locking mute needle roller wrench, figure 1 is a three-dimensional structure schematic diagram of the invention, figure 2 is a dress structure schematic diagram without an annular clamping piece 13, figure 3 is a section structure schematic diagram along the longitudinal direction of an annular body 11, figure 4 is a needle roller end face diagram in polar coordinates, figure 5 is a structure schematic diagram of a needle roller end face, the mute needle roller wrench comprises a wrench handle 10, the end part of the handle is integrally connected with the annular body 11, annular clamping piece 13 grooves are arranged on the inner peripheries of the upper end and the lower end of the annular body 11, a plurality of needle rollers 14 are arranged between the annular clamping piece 13 grooves on the upper end and the lower end of the inner periphery of the annular body 11, and the needle roller 14 end face structure is that

The inner peripheries of the rolling needle rollers 14 are provided with inner polygonal ratchet rings 12, the outer peripheries of two ends of the ratchet rings 12 are provided with steps 17, and the steps 17 at the two ends are positioned between the annular clamping pieces 13 at the two ends.

In the present embodiment, the inner polygonal ratchet ring 12 is a 12-tooth inner polygonal ratchet ring 12, 14a, which is a chamfered portion of the end surface of the needle roller 14.

The plurality of rolling needles 14 are identical in shape, grooves 15 are formed in the peripheries of the rolling needles 14, O-shaped rings 16 are arranged in the grooves 15, and the O-shaped rings 16 are metal elastic rings or rubber rings; in this embodiment, a corrosion-resistant and long-life silicone O-ring is used, and a stainless elastic O-ring may be used.

Fig. 6 is a schematic top view of the ring card 13, fig. 7 is a schematic cross-sectional view of the ring card 13 taken along a-a in fig. 4 before assembly, and fig. 8 is a schematic cross-sectional view of the ring card 13 taken along a-a in fig. 4 after assembly.

The annular clamping piece 13 comprises an outer periphery and an inner periphery which are connected into a whole, the inner periphery of the annular clamping piece 13 is a horizontal plane 13a, the outer periphery of the annular clamping piece 13 is an inclined plane 13b, an included angle is formed between the inclined plane 13b of the outer periphery of the annular clamping piece 13 and the horizontal plane 13a of the inner periphery of the annular clamping piece 13, and the inclined plane 13b reaches the plane of the horizontal plane 13a in an assembly state.

And annular needle roller frames are arranged among the plurality of needle rollers 14 and are arranged among the grooves of the annular clamping pieces 13 at the upper end and the lower end of the inner periphery of the annular body 11.

The surfaces of the plurality of roller pins 14 are of smooth structures, the lengths of the plurality of roller pins 14 are smaller than or equal to the distance between the grooves of the annular clamping pieces 13 at two ends, a roller frame-free structure is adopted in the implementation, and the roller pins 14 are provided with axial grooves 18 in the axial direction.

The opposite end of the ring body 11 of the wrench handle 10 is a smooth end, a solid wrench 20, a ratchet wrench or a socket wrench. At the opposite end of annular body 11 in this embodiment is a solid wrench 20.

The wrench can move the bolt or the nut to rotate within the range of 0.5-360 degrees, namely, the wrench can effectively rotate the bolt head or the nut within the range, and particularly, the wrench can rotate the bolt or the nut within a small angle range, which is difficult to realize by a common wrench.

The invention has the following positive effects: the annular clamping pieces 13 are arranged in the grooves formed in the inner peripheries of the upper end and the lower end of the annular body 11 at the end part of the wrench, and the plurality of needle rollers 14 and the ratchet ring 12 can be limited in the annular body 11 by the annular clamping pieces 13, so that a plurality of parts are assembled into a whole; by machining the end faces of the plurality of needles 14

The structure of (1) can lock among a plurality of needle rollers 14 when the spanner rotates towards one direction, separate each other when rotating towards the opposite direction, this kind of structure can prevent the dead abnormal situation that appears in the locking, can guarantee the normal switching between locking and separation, has greatly improved the flexibility of spanner, because there is not the effect of spring and ratchet, there is not like the noise of ratchet spanner, this kind of organization, can shorten the turned angle of spanner, even can implement the turning of the bolt or nut under the condition of reversing the angle of 0.5 degrees, not only can be used for turning of the large angle, but also can be used for the small angle rotation in the narrow range, have greatly improved precision and application range of the spanner, its precision compares with ratchet spanner, about 10 times improved, compare with ratchet spanner of the same size, its torque improves 4-5 times; the grooves 15 are formed in the peripheries of the rolling shafts, the O-shaped rings can be arranged in the grooves 15, the rolling needles 14 can be close to each other, the contact gap between the rolling shafts is further reduced, the angle of the wrench for rotating the bolt and the nut is reduced, and the precision of rotating the bolt and the nut is improved; the steps 17 are arranged on the outer peripheries of the two ends of the ratchet ring 12, and the roller pins 14 and the ratchet ring 12 can be assembled on the inner periphery of the annular body 11 by using an annular clamping piece 13; by designing the annular clamping piece 13 to have the outer periphery as the inclined surface 13b and the inner periphery as the horizontal surface 13a, the needle roller 14 and the ratchet ring 12 can be limited in the clamping grooves at the upper end and the lower end by utilizing the angle elasticity of the annular clamping piece 13, and the overall structure of the wrench is simplified; through setting up axial slot 18, greatly improved the speed of assembly, can ensure the discernment to 14 angles of kingpin in the assembling process, prevent the spanner rotation problem's that brings because the wrong equipment appearance, through detecting, its moment of torsion of the spanner of this kind of structure surpasss national standard 5 times more, its life-span surpasss the same size ratchet spanner 8 times far away, this kind of spanner can be under the condition that does not reduce the spanner moment of torsion, enlarge the rotational degree of freedom of spanner, reduce the noise in the use, improve the convenience of spanner.

Claims

1. The utility model provides a from locking-type silence bearing pin spanner, includes the spanner handle, its characterized in that: handle tip an organic whole is connected with the ring body, and the ring body is provided with annular card groove in both ends interior circumference from top to bottom, and the annular card inslot at both ends is arranged between about the ring body interior circumference has a plurality of kingpins, and the equation of kingpin terminal surface in polar coordinate system is:

，

the inner peripheries of the rolling needles are provided with inner polygonal ratchet rings, the peripheries of two ends of each ratchet ring are provided with steps, and the steps at the two ends are positioned between the two annular clamping pieces.

2. The self-locking silent needle roller wrench as claimed in claim 1, wherein: the shapes of the rolling needles are the same, grooves are formed in the peripheries of the rolling needles, O-shaped rings are arranged in the grooves, and the O-shaped rings are metal elastic rings or rubber rings.

3. The self-locking silent needle roller wrench as claimed in claim 1, wherein: the annular card is including linking periphery and interior week as an organic whole, and the interior week of annular card is the horizontal plane, and the periphery of annular card is the inclined plane, forms an contained angle between the inclined plane of annular card periphery and the horizontal plane of annular card interior week, and level and inclined plane are in same horizontal plane under the equipment state.

4. The self-locking silent needle roller wrench as claimed in claim 1, wherein: and annular needle roller frames are arranged among the plurality of needle rollers and are arranged among the annular card grooves at the upper end and the lower end of the inner periphery of the annular body.

5. The self-locking silent needle roller wrench as claimed in claim 1, wherein: the peripheries of the rolling needles are smooth surfaces, and the lengths of the rolling needles are smaller than or equal to the intervals between the annular card grooves at two ends.

6. The self-locking silent needle roller wrench as claimed in claim 1, wherein: and the needle roller is provided with an axial groove in the axial direction.

7. The self-locking silent needle roller wrench as claimed in claim 1, wherein: the opposite end of the annular body of the wrench handle is a smooth end and is provided with a solid wrench, a ratchet wrench or a socket wrench.

8. The self-locking silent needle roller wrench as claimed in claim 1, wherein: the wrench can pull the bolt or the nut to rotate within a small angle range of 0.5-360 degrees.