CN201006591Y

CN201006591Y - Improved multiple standards solid wrench

Info

Publication number: CN201006591Y
Application number: CNU2005201284454U
Authority: CN
Inventors: 李允恭
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-30
Filing date: 2005-09-30
Publication date: 2008-01-16
Anticipated expiration: 2015-09-30

Abstract

An improved multi-standard spanner relates to hand-operated tool, as B25B13/08. Prior spanner (GB4388-84) is hard to clamp tightly when the axis of handle, bolt head and nut are not in 90 degrees, to hurt hand, with less bayonet standards. Two ends of the utility model are both arranged with clamp lips with two-different step diameters, which bolt head and nut are axially different in diameter, two outer end faces of the handle axis of the clamp lips are not parallel, the thickness of the clamp lips are larger than the middle handle, and the front clamp lip is thinner than the back clamp lip, the open width of the clamp lip means the distance between the opposite hexagon edges of two relative bolt heads or nuts, added with a space value. Four side end faces of the clamp lip are arranged with four hexagon holes with different apertures, at the direction with 90 degrees relative to the axis of the handle, and the handle portion is provided with a plurality of hexagon holes with different apertures and enforcement arm plug hole for forcing the short edge of the inner hexagon snapper. And one spanner can be provided with eight bayonet positions in eight standards of nut and bolt head.

Description

Improved multi-specification solid wrench

The technical field is as follows: the utility model belongs to the manual tool class, B25B13/08.

Technical background: each wrench of a common wrench (according to GB 4388-84) only has 2 bayonets, and when the common wrench is connected with a bolt matched with a screwdriver for screwing a non-tapping workpiece, 12 solid wrenches are needed when bolt heads and nuts of M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20 and M22 are fastened. Although there is the remote constitution design and the handle axis distributes and is radial different footpath solid wrench and patent number is: 90224177X, 992203651, 012028525, 20042002209.2 and the like, but the defects that when the axial direction of the handle axis and the axial direction of the bolt head and the nut cannot be in 90 degrees are not solved, the clamping lips cannot be enabled to clamp the bolt head and the nut firmly, the bayonet specification of the single-handle spanner is too small, the middle handle accounts for 70 percent of the total weight, and materials are wasted.

Summary of the inventionthe problems to be solved, the technical solutions, the advantages, the description of the drawings, and the specific embodiments.

The problems to be solved are as follows: when the axial line of the handle and the axial direction of the bolt head and the nut can not be operated at 90 degrees, the clamping lip can not be ensured to clamp the bolt head and the nut firmly, the bayonet specification of a single wrench is small, the proportion of the middle handle to the total weight is large, steel is wasted, the number of working positions of the bayonet is small, and the function is single.

The technical scheme is as follows: the new scheme combines two solid wrenches with adjacent clamping lip opening specifications and common types (according to GB 4388-84) into one solid wrench, but the middle handle is still the thickness and the width of the common handle, the clamping lips at two ends are thickened, the clamping lip at the front end is thinner than the clamping lip at the rear end, and the thickness of the clamping lip is the sum of the thicknesses of bolt heads or nuts of corresponding specifications. The stepped working surface (contact surface) of the clamping lip is in a stepped structure which is different in diameter and parallel to the axis of the bolt head and the nut, is parallel to the axis of the handle and is vertical to the positive end face of the middle handle, and the axes of the nut and the bolt head are vertical to the axis of the handle. 4 regular hexagon holes with different apertures are arranged on 4 side end faces of the clamping lip, the specification of each hole corresponds to the specification of the bolt head and the nut plus the clearance value, the axis of each hole and the axial line of the handle form an angle smaller than 90 degrees, and a group of opposite side faces of each regular hexagon are parallel to the axis of the handle. The positive end face of the handle part is in a linear shape and is provided with a plurality of regular hexagonal holes with different hole diameters, the center distance of the holes is larger than the diagonal distance of the regular hexagon, the hole diameters are matched with the specifications of the corresponding inner hexagonal wrench rod, and the regular hexagonal holes are used as force increasing handle insertion holes when the inner hexagonal wrench is applied with force by a short handle, namely, the long rod part of the inner hexagonal wrench is penetrated into the holes with the corresponding specifications of the improved multi-specification solid wrench handle to screw the wrench handle for applying force is saved. The above solution can solve the aforementioned drawbacks.

Has the beneficial effects that: the improved multi-specification solid wrench enlarges the use specification quantity of a single wrench, namely the number of work stations, can also be used for a short-edge force application auxiliary handle of the inner hexagonal wrench, has multiple purposes, is firmly clamped by the clamping lip when the axial line of the handle, the axial line of a bolt head and the axial line of a nut are operated at an angle of less than 90 degrees, is not easy to collide and hurt hands, saves steel materials, and reduces the handle number, the occupied space, the total cost and the selling price of a complete set of tools.

Description of the drawings: the following is further described with reference to the accompanying drawings. Fig. 1 is a front view of the improved multi-specification solid wrench, fig. 2 is a side view (in direction B) of the improved multi-specification solid wrench, fig. 3 is a side view (in direction a) of a clamping lip portion of the solid wrench, fig. 4 is a side end face view of the clamping lip portion of the solid wrench, and fig. 5 is a cross-sectional view of a regular hexagonal hole in the side portion of the clamping lip portion of the solid wrench.

Names of the parts in the figure: 1. the front end surface of the clamping lip; 2. stepped working surfaces (contact surfaces); 3. a side end face; 4. a front end clamping lip; 5. a rear end clamping lip; 6. the included angle alpha of the front end surface; 7. a side end face regular hexagonal hole; 8. the side end face is a regular hexagon hole axis; 9. a handle axis; 10. the front end surface of the middle handle; 11. bolt head, nut axis; 12. the opening width D of the clamping lip; 13. lip depth L; 14. the middle handle is provided with a regular hexagon hole.

The front end clamping lip (4) is H thick ₁ = sum of thicknesses of two bolt heads or nuts of corresponding specifications, H ₂ The thickness of the back end clamping lip (5) and the depth of the clamping lip

Taking the value of L = D and the width of the opening of the clamping lipD is the distance of opposite sides of the regular hexagon of the nut and the bolt head plus a standard clearance value (less than 0.6 mm), and the included angle of the two positive end surfaces is alpha. Alpha, L and H ₁ 、H ₂ There is a relation between:

the embodiment example is as follows:

the following is the comparison of the use quantity of the traditional and the improved solid wrench when the bolt and the nut on the non-tapping workpiece are screwed and used together with a screwdriver (the improved solid wrench only calculates the lip opening specification and the number of the regular hexagon holes on the non-tapping end surface)

Specification of nut and bolt head	The number of two kinds of wrenches		Remarks for note
Specification of nut and bolt head	The number of two kinds of wrenches		Remarks for note	Regular hexagon opposite side distance (mm)	Of the conventional type	Improved generation
Within 32 hours	12	7	36 of multi-plate M24	Regular hexagon opposite side distance (mm)	Of the conventional type	Improved generation
Within 32 hours	12	7	36 of multi-plate M24	Within 27 DEG C	10	5
17 or less	6	3		Within 27 DEG C	10	5

As shown in figure 1, the front end surface (10) of the handle is provided with 4 regular hexagonal holes (14) with different diameters, and in figure 2, the thickness H of the front clamping lip (4) ₁ < thickness H of the rear end lip (5) ₂ Fig. 1 and 3 show that the two end clamping lips are stepped working surfaces (2) with different diameters in the direction perpendicular to the axis (9) of the handle, and fig. 4 shows that the side end surfaces (3) of the clamping lips are provided with regular hexagonal holes (7) and the side end surfaces (3) shown in fig. 5 are provided with regular hexagonal hole axes (8) and the axis (9) of the handle, wherein the included angles are smaller than 90 degrees.

Claims

1. The improved multi-specification solid wrench has a structure of a middle handle and two reducing clamping lips at two ends, and is characterized in that the structure is formed by the middle handle with a plurality of regular hexagonal holes with different diameters and two stepped clamping lips with two ends and the axes of the handles in different diameters in the vertical direction into a whole.

2. The improved multi-specification solid wrench as claimed in claim 1, wherein: the positive end surfaces of the two end clamping lips are inclined slope surfaces, the front end clamping lips are thinner than the rear end clamping lips, the thickness of the front end clamping lips is larger than that of the middle handle, and the thickness of the front end clamping lips is the sum of the thicknesses of the nut and the bolt head corresponding to the openings of the two different-diameter clamping lips.

3. The improved multi-specification solid wrench as claimed in claim 1, wherein: the stepped working surface of the clamping lip is different in diameter and parallel to the axis of the bolt head and the nut, and is also parallel to the axis of the handle, and the stepped surface is perpendicular to the positive end surface of the handle.

4. The improved multi-specification solid wrench as claimed in claim 1, wherein: the width of the opening of the clamping lip is the sum of the opposite side distance of the regular hexagon of the corresponding nut and the bolt head and the clearance value, and the depth of the clamping lip is not less than the opposite side distance of the regular hexagon of the nut and the bolt head of the corresponding specification

And (4) doubling.

5. The improved multi-specification solid wrench as claimed in claim 1, wherein: the front end face of the middle handle is distributed along the axis and is provided with a plurality of regular hexagonal holes with different diameters, the diameters of the regular hexagonal holes correspond to the specifications of corresponding inner hexagonal wrench rods, and the center distance of the regular hexagonal holes is larger than the diagonal distance of the regular hexagon.

6. The improved multi-specification solid wrench as claimed in claim 1, wherein: the 4 side end faces of the clamping lip part are provided with 4 regular hexagonal holes with different hole diameters, a group of opposite side planes of the holes are parallel to the axis of the handle and are parallel to the positive end face of the handle, and the axis of the holes and the axial line of the handle form an angle smaller than 90 degrees.