CN208826483U - A kind of accurate torsion restriction spanner - Google Patents

Abstract

The utility model discloses a kind of accurate torsion to limit spanner, including fixed case, the two sides of fixed case are fixedly connected to curved case, the top of fixed case, which is run through, fixed link, and one end that fixed link extends to fixed box cavity is fixedly connected with snap ring, the surface and two sides of snap ring offer opening, the bottom of snap ring is fixedly connected with connecting rod, the bottom end of connecting rod runs through fixed case and extends to the bottom of fixed case, and one end that connecting rod extends to fixed case bottom is fixedly connected with wrenching bar, and the utility model relates to spanner technical fields.The accurate torsion limits spanner, acrotorque when spanner work can be accurately controlled, and it is automatically springed open after reaching acrotorque, it is handled as previous from part without using person, greatly improve the accuracy of torque spanner, the time of user is also saved while operation convenient for user, reduces the use cost of user, it is practical.

Description

A kind of accurate torsion restriction spanner

Technical field

The utility model relates to spanner technical field, specially a kind of accurate torsion limits spanner.

Background technique

Spanner is a kind of common installation and removal tool, twists bolt, screw, nut and other spiral shells using lever principle Line tightly holds the opening of bolt or nut or the hand tools of trepanning firmware, and spanner is usually formed with clamp holder in the one or both ends of shank Portion applies external force shank and applies external force, can twist bolt or nut holds the opening or sets of holes of bolt or nut.Along spiral shell when use Line direction of rotation applies external force in shank, can twist bolt or nut, the existing torque spanner in market is all using mechanical spine Wheel slipping device realizes that torsion limits, after use environment is severe or is used for multiple times, the accuracy decline of ratchet slipping device, but That existing accurate torsion limits spanner and needs processing frequently from part, be not convenient to use while increasing cost yet person into Row operation, affects the normal use of user.

Traditional accurate torsion limits spanner, can not be accurately controlled acrotorque when spanner work, and reach most It cannot be automatically springed open after big torsion, user is needed to handle as previous from part, greatly reduce height torsion The accuracy of spanner wastes the time of user while the person of being not convenient to use is operated, increase making for user It is not very practical with cost.

Utility model content

In view of the deficiencies of the prior art, the utility model provides a kind of accurate torsion restriction spanner, solves accurate torsion Power limits the problem of spanner can not be accurately controlled acrotorque when spanner works and need to handling from part.

In order to achieve the above object, the utility model is achieved by the following technical programs: a kind of accurate torsion restriction is pulled Hand, including fixed case, the two sides of the fixed case are fixedly connected to curved case, and the top of the fixed case, which is run through, fixation Bar, and fixed link extends to one end of fixed box cavity and is fixedly connected with snap ring, and the surface and two sides of the snap ring open up There is opening, the bottom of the snap ring is fixedly connected with connecting rod, and the bottom end of the connecting rod through fixed case and extends to fixation The bottom of case, and connecting rod extends to one end of fixed case bottom and is fixedly connected with wrenching bar, the one of the curved box cavity Side is fixedly connected with reset spring, and reset spring is fixedly connected with clapboard, the wedge far from one end of curved chamber interior wall Shape plate sequentially passes through curved case and fixed case far from the side of reset spring and extends to the inner cavity of fixed case, and clapboard prolongs The side for extending to fixed box cavity is contacted with the inner wall of opening.

Preferably, pulling plate is fixedly connected at the top of the clapboard, the top of the pulling plate through curved case and extends To the top of curved case.

Preferably, the top and bottom of the fixed case offer respectively leads to what fixed link and connecting rod were used in combination Hole.

Preferably, the quantity of the opening is at least 4, and is arranged in equidistant mode.

Preferably, the surface of the curved case is fixedly connected with anti-skid chequer.

Beneficial effect

The utility model provides a kind of accurate torsion restriction spanner.Have compared with prior art it is following the utility model has the advantages that The accurate torsion limits spanner, is fixedly connected to curved case by the two sides of fixed case, the top of fixed case, which is run through, fixation Bar, and fixed link extends to one end of fixed box cavity and is fixedly connected with snap ring, and the surface and two sides of snap ring offer out Mouthful, the bottom of snap ring is fixedly connected with connecting rod, and the bottom end of connecting rod runs through fixed case and extends to the bottom of fixed case, and One end that connecting rod extends to fixed case bottom is fixedly connected with wrenching bar, and the side of curved box cavity is fixedly connected with reset bullet Spring, and reset spring is fixedly connected with clapboard, side of the clapboard far from reset spring far from one end of curved chamber interior wall Sequentially pass through curved case and fixed case and extend to the inner cavity of fixed case, and clapboard extend to the side of fixed box cavity with The inner wall of opening contacts, and can be accurately controlled acrotorque when spanner work, and automatically spring open after reaching acrotorque, nothing Need user to handle as previous from part, greatly improve the accuracy of torque spanner, convenient for user into The time of user is also saved while row operation, reduces the use cost of user, it is practical.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the cross-sectional view of the utility model fixed case and curved box structure；

Fig. 3 is the perspective view of the utility model Snap ring structure.

In figure: 1 fixed case, 2 curved casees, 3 fixed links, 4 snap rings, 5 openings, 6 connecting rods, 7 wrenching bars, 8 reset springs, 9 Clapboard, 10 pulling plates.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Fig. 1-3 is please referred to, the utility model provides a kind of technical solution: a kind of accurate torsion restriction spanner, including fixation Case 1, the top and bottom of fixed case 1 offer the through-hole being used in combination with fixed link 3 and connecting rod 6 respectively, fixed case 1 Two sides are fixedly connected to curved case 2, and the surface of curved case 2 is fixedly connected with anti-skid chequer, and anti-skid chequer can increase user and turn Frictional force when curved case 2 is moved, so that user is more stable when rotating, the top of fixed case 1, which is run through, fixed link 3, and And fixed link 3 extends to one end of 1 inner cavity of fixed case and is fixedly connected with snap ring 4, the surface and two sides of snap ring 4 offer opening 5, opening 5 and wrenching bar 7 are used in combination, and 5 quantity of being open is at least 4, and is arranged in equidistant mode, are blocked The bottom of ring 4 is fixedly connected with connecting rod 6, and the bottom end of connecting rod 6 runs through fixed case 1 and extends to the bottom of fixed case 1, and One end that connecting rod 6 extends to 1 bottom of fixed case is fixedly connected with wrenching bar 7, and the side of curved 2 inner cavity of case is fixedly connected with multiple Position spring 8, and reset spring 8 is fixedly connected with clapboard 9 far from one end of curved 2 inner wall of case, and the top of clapboard 9 is fixed It is connected with pulling plate 10, the top of pulling plate 10 runs through curved case 2 and extends to the top of curved case 2, and clapboard 9 is far from reset spring 8 side sequentially passes through curved case 2 and fixed case 1 and the inner cavity for extending to fixed case 1, and clapboard extends to fixed case 1 The side of inner cavity is contacted with the inner wall of opening 5.

In use, wrenching bar 7 can be first directed at object to be rotated by user, then user can be rotated curved Case 2, and then driven the rotation of fixed case 1, because the snap ring 4 inside clapboard 9 and fixed case 1 inside curved case 2 is card Conjunction state thus will drive connecting rod 6 and be rotated, so that wrenching bar 7 driven to rotate, can thus treat rotation Object is rotated, and after reaching the device maximum torque value, wedge block 9 and opening 5 can be to resets under the action of torsion Spring 8 is squeezed, and the lateral deformation of reset spring 8 has been driven, and opening 5 and wedge block 9 in this way will separate, and user continues It will drive the rotation of fixed case 1 when rotating curved case 2, but connecting rod 6 and wrenching bar 7 will not continue to rotate, then user Clapboard 9 can be pulled by pulling plate 10, and then cause certain extruding to reset spring 8, then user can turn Dynamic fixed link 3, and then the movement of snap ring 4 has been driven, pulling plate 10 is unclamped after snap ring 4 moves to suitable position, works as wedge shape Plate 9 reenters opening 5.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of accurate torsion limits spanner, including fixed case (1), it is characterised in that: the two sides of the fixed case (1) are fixed It is connected with curved case (2), the top of the fixed case (1), which is run through, to be had fixed link (3), and fixed link (3) extends to fixed case (1) one end of inner cavity is fixedly connected with snap ring (4), and the surface and two sides of the snap ring (4) offer opening (5), the card The bottom of ring (4) is fixedly connected with connecting rod (6), and the bottom end of the connecting rod (6) through fixed case (1) and extends to fixed case (1) bottom, and connecting rod (6) extends to one end of fixed case (1) bottom and is fixedly connected with wrenching bar (7), it is described curved The side of case (2) inner cavity is fixedly connected with reset spring (8), and the one end of reset spring (8) far from curved case (2) inner wall is solid Surely it is connected with clapboard (9), the clapboard (9) sequentially passes through curved case (2) and fixed case far from the side of reset spring (8) (1) and the inner cavity of fixed case (1) is extended to, and clapboard extends to the side of fixed case (1) inner cavity and the inner wall of opening (5) Contact.

2. a kind of accurate torsion according to claim 1 limits spanner, it is characterised in that: the top of the clapboard (9) It is fixedly connected with pulling plate (10), the top of the pulling plate (10) runs through curved case (2) and extends to the top of curved case (2).

3. a kind of accurate torsion according to claim 1 limits spanner, it is characterised in that: the top of the fixed case (1) Offer the through-hole being used in combination with fixed link (3) and connecting rod (6) respectively with bottom.

4. a kind of accurate torsion according to claim 1 limits spanner, it is characterised in that: the quantity of the opening (5) is extremely Less it is 4, and is arranged in equidistant mode.

5. a kind of accurate torsion according to claim 1 limits spanner, it is characterised in that: the surface of the curved case (2) It is fixedly connected with anti-skid chequer.