CN2069335U

CN2069335U - Wedge type spanner with multiple tooth forms

Info

Publication number: CN2069335U
Application number: CN 89220870
Authority: CN
Inventors: 牟群芳
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-12-09
Filing date: 1989-12-09
Publication date: 1991-01-16

Abstract

A wedge type wrench with various tooth-shaped structures.

The spanner is characterized in that a movable wedge block with a spring and a positioning pin is arranged on one or two claws of an open spanner, the working surface of the movable wedge block is made into one or more working tooth surfaces matched with the meshing position of a working object (nut) during working, and the working tooth surfaces are respectively provided with a tooth form, a double tooth form, a triple tooth form, a multiple tooth form and other forms.

Description

Multitooth wedge spanner

The present invention is a kind of Wedge-type wrench that multiple tooth type structures is arranged.

Though the solution that the Wedge-type wrench of making according to the patent No. 86204867.2 is successful the stubborn and pendulum square degree problem of dwindling wrench of the sour jujube of opening wrench, but because the movable voussoir working face that is installed on the pawl is a zigzag, and movable voussoir axis and wrench S mouth center line angulation are bigger, so nut subject to damage during work, particularly when bearing big moment, Practical Performance is restricted.

The present invention is exactly the improvement of carrying out at Wedge-type wrench the problems referred to above.This wrench Practical Performance is more reliable, and range of application is more extensive, and stressed big, nut is easy damaged not, and it is little that spanner falls square degree, high efficiency.

The present invention is achieved in that

1, the voussoir that has spring and alignment pin is installed on one or two pawl of opening wrench, the voussoir axis becomes 0～35 ° with wrench S mouth center line.The working flank that the position of engagement matched when the working face of movable voussoir had one or more and target (nut) work.See accompanying drawing.These work, the flank of tooth with various utility functions are according to quantity and the different appellation respectively of function: a profile of tooth; Two profiles of tooth; Three profiles of tooth or multiple tooth shape or the like.

2, a profile of tooth: see Fig. 1 a and installation diagram Fig. 1 b.Have only on the voussoir one with the nut tooth working face that the angle touches that joins.This working face voussoir axis becomes the α angle, and the α angle is less than from the locking angle.Face length equals (0.3～0.8) l, (the l=nut length of side).

3, two profiles of tooth, see Fig. 2 a and installation diagram 2b, have on the voussoir two can be in the contacted tooth working face of nut, the position of tooth working face and with the angle of voussoir axis during with work the design pendulum square degree (10 °～30 °) of wrench be complementary, and each working face and voussoir axis angulation also all satisfy the condition of self-locking of withdrawing after not making voussoir stressed.Face length equals (0.2～0.5) l, (the l=nut length of side).

4, three profiles of tooth: see Fig. 3 a and installation diagram 3b.Have on the voussoir three can with the contacted tooth working face of nut, the position of tooth working face and with the angle of voussoir axis during with work the design pendulum square degree (5 °～30 °) of wrench be complementary.The voussoir working face of three profiles of tooth has various ways such as trisection tooth and one big two little tooth, large, medium and small tooth, young waiter in a wineshop or an inn's canine tooth.

5, multiple tooth shape: the multiple tooth shape of general designation of the tooth working face more than four is arranged on the voussoir, and the profile of tooth of this structure mainly is to catch target to realize tightening the utility function of unclamping by the friction between tooth and the target.

During work: because of the working face and the angle of tooth matches with each real work position of nut with wrench, and stressed back wedge self-locking, so when wrench clockwise rotates, the voussoir wedge is in the rotary space of nut and wrench, clamp the nut precession, when wrench rotates counterclockwise, the nut counter-force will push back voussoir, rotary space strengthens, original position is the side, the then two voussoir pawls work up and down of voussoir that two teeth are above doubles to dwindle down square degree, uses this kind wrench to have especially in narrow location and shows the practical function of annotating.The wrench of various dissimilar tooth forms is owing to the structure difference, and utility function is also different to some extent.

One flute profile wrench falls 60 ° of square degrees but lifting surface area is big, is applicable to the occasion of big moment work.

Bidentate template hand falls square degree and can narrow down to 20 °, and the also big high efficiency of lifting surface area, and universal performance is good, is fit to do common wrench.

The wrench of three teeth and type such as multiple tooth falls square degree and all may compress into below 10 °, uses flexibly, high efficiency, is fit to make light-duty wrench or stiff head and a voussoir head combined type.

Pawl work tooth in monodactyle Wedge-type opposite is on corpus unguis, and flute profile is with the voussoir tooth.

It is the same that this mechanism principle is installed on the opening universal screw wrench.

Description of drawings:

Fig. 1: (a) a profile of tooth voussoir (b) profile of tooth Wedge type spanner structure chart (1) screw (2) catch (3) lower wedge block (a 4) spring (5) is pulled body (6) alignment pin (7) and is gone up voussoir (8) spring

Fig. 2: (a) two profile of tooth voussoirs (b), two profile of tooth Wedge type spanner structure chart (1) screw (2) catch (3) lower wedge block (4) springs (5) are pulled body (6) alignment pin (7) and are gone up voussoir (8) spring

Fig. 3: (a) three profile of tooth voussoirs (b), three profile of tooth Wedge type spanner structure chart (1) screw (2) catch (3) lower wedge block (4) springs (5) are pulled body (6) alignment pin (7) and are gone up voussoir (8) spring

Fig. 4: (a) the multiple tooth shape voussoir of one big two little tooth (b) in the multiple tooth shape voussoir

Fig. 5: the single wedge type spanner structure figure (5) that voussoir is installed on the monodactyle pulls body (6) alignment pin (7) and goes up voussoir (8) spring

Embodiment 1; See wrench structure chart 2b:

With open S is that 27 millimeters opening wrench are example:

S=27 millimeter D=31.2 millimeter is that radius mills S mouth plane with 31.2/2 millimeter.

Two pawl voussoir diameters are 9 millimeters up and down, and the voussoir flank of tooth is two profiles of tooth, and the angle of voussoir axis and S mouth center line is 23 ° during installation.

The long end face of last voussoir (7) has a paragraph key groove, and keyway length equals the voussoir stroke and adds pin (7) diameter, and shop bolt (6) is installed in the screw of dewclaw with helicitic texture.Join with keyway, play spacing and anti-roll effect.There is a spring eye at dewclaw hole depth place, 6 millimeters springs of interior dress ∮ (8), goes up voussoir length and equals the voussoir hole depth that dewclaw opens and deduct long 13 millimeters of spring travel spring.

Lower claw has through hole, and lower wedge block (3) is contained in the through hole.Lower wedge block has open-minded hole behind, and the spring (4) of 15.6 millimeters of diameter 2.3 millimeters long is housed in the hole, and (2) one of the washers in location are in the hole of slitting, and one is fixed on down on the corpus unguis with screw (1).Lower claw hole and 31.2/2 radius mill mouth has one to hand over plane (a) voussoir to withstand on to play unidirectional position-limiting action on the plane.

Embodiment 2: see Fig. 5

With open S is that 27 millimeters opening wrench are example, and the dewclaw structure is with embodiment 1, and the lower claw working face is made two profiles of tooth.It is identical with dewclaw installation wedge principle that lower claw is installed voussoir.

Claims

1, a kind of Wedge-type wrench that has multiple flute profile, it is characterized in that on one or two pawl of opening wrench, the voussoir that has spring and alignment pin being installed, and the working face that is installed in the movable voussoir on monodactyle or the two pawl is made one or more working flanks that the position of engagement matches during with target (nut) work.The tooth-shape structure that these working flanks with varying number of various utility functions are formed has a profile of tooth, two profiles of tooth, three profiles of tooth and multiple tooth shape respectively.All there is stressed back to form the tooth working face of self-marketing condition on every kind of profile of tooth.

2, the voussoir axis that also is to be installed on wrench one pawl or two pawls according to said its feature of Wedge-type wrench that has various tooth-shape structures of claim 1 becomes 0～35 ° of angle with S mouth center line.

3, saidly have its feature of Wedge type spanner of various tooth-shape structures also to be when on the pawl wedge structure being installed according to claim 1,2, another does not install the more than one tooth that yet processes definite shape on the pawl working face of voussoir.