CN2449876Y - Wrench - Google Patents

Abstract

The utility model relates to a wrench which comprises a grab handle, wherein, at least one end of the grab handle is provided with a holding part which is used for holding a screw nut, a screw bolt, etc. The holding part is formed a holding plane, a shaft of the grab handle is provided with a first plane upwards, and the cross section of the first plane approximately parallels to the holding plane. The utility model is characterized in that the wrench is also comprises two second planes which respectively arranged on both sides of the first plane along the axial direction of the grab handle and are crossed with the first plane in a large angle. Each second plane is formed on the saved segment of the grab handle, and the handle has stronger strength at whole and is easy to grasp.

Description

Spanner

The utility model relates to a kind of hand-operated tools, especially refers to a kind of spanner.

Fig. 1 is a kind of structure of known spanner, and the lever 12 of this spanner 10 is respectively established a depressed area 14 in end face and bottom surface, and usually punching press has the numeral of display size or literal such as brand, material in the I4 of this depressed area.The setting of this depressed area 14 makes the section concave-convex surface of lever 12, has the effect of strengthening lever 12 structures.Yet because of limitting on the processing procedure, the part of lever 12 only is located in this depressed area 14, the zone 15 of depressed area, the side of not establishing is simple rectangular cross section, its intensity is not as good as having 14 places, depressed area, makes the bulk strength inequality of spanner, and the position 15 that is not provided with the depressed area becomes easy destruction damage part.

The spanner 16 that Figure 2 shows that in recent years to be come out, the surface of its lever 18 is quite smooth, uses raising texture, and its section is simple fine strip shape, and by material mechanics principle, its structural strength is instead not as the intensity height of the depressed area 14 of the spanner 10 of Fig. 1.

In addition, the surface smoothing of the lever 12,18 of known spanner 10,15, easy and hand slippage.And side 13,19 thickness of lever 12,18 are less, and the contact area between hand is little, and it is big to pretend the stress that is used for hand, easily causes tingling sensation.Moreover known spanner is metallic luster, seems dull, does not have special attractability or identity.

Because the deficiency of above-mentioned known product, main purpose of the present utility model provides a kind of spanner with preferable structural strength.

For achieving the above object, the technical solution of the utility model is:

A kind of spanner includes: a lever, its at least one end are provided with a clamping part for clamping nut, bolt etc.; This clamping part forms a clamping plane; This lever axially on have one first plane, general and this clamping plane parallel of the section on this first plane; It is characterized in that: it includes in addition: two second planes, and it axially is located at this first plane, two sides respectively along lever, and is wide-angle with this first plane and intersects, and respectively this second planar shaping is in the length of economizing of lever.

The end abutment on these two second planes is in this clamping part trailing edge.

Respectively this second plane protrudes out first plane to being less than apical margin or bottom line.

The outer wall on second plane can be provided with burr.

Second plane is in the position that protrudes out this first plane, and the width of its section system is by outer past interior for increasing progressively.

This first plane can be provided with open-work.

This first plane and these second planes to end face that is less than this lever or bottom surface forms an accommodation space; In this accommodation space, can be provided with a non-slippery substance.

The utility model has following advantage:

1, section all is H shape or claims I shape on the whole length direction of lever, the bulk strength homogeneous, and the relatively poor destroyed area of no intensity exists, and has higher structural strength.

2, the outer wall on second plane can be provided with burr, has antiskid function.

3, the outer wall broad on second plane is easy to grip and do not have tingling sensation.

4, non-slippery substance in the accommodation space makes non-skid property better, grips more comfortable.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the stereogram of known a kind of spanner.

Fig. 2 is the stereogram of known another kind of spanner.

Fig. 3 is the stereogram of the utility model one preferred embodiment.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the profile along the 5-5 section of Fig. 3.

Fig. 6 is a shaping schematic view of the present utility model.

Fig. 7 is the profile of another preferred embodiment of the utility model.

Fig. 8 is the stereogram of another preferred embodiment of the utility model.

Fig. 9 is the shaping schematic view of Fig. 8.

Figure 10 is the stereogram of another preferred embodiment of the utility model.

Figure 11 is a kind of user mode schematic diagram of Figure 10.

Figure 12 is the part sectioned view of another enforcement state of Figure 10.

Figure 13 is force analysis figure of the present utility model.

Figure 2 shows that the spanner 20 that the utility model one preferred embodiment is provided, consist predominantly of: a lever 22, respectively establish a clamping part 24,26 in these lever 22 two ends, for clamping nut, bolt or analog, clamping part 24 is the opening shape, and clamping part 25 is then poroid for cover.

This lever 22 has one first plane 30, generally is parallel to this two clamping parts, 24,26 formed clamping planes; The both sides on this first plane 30 axially are located at along lever 22 in two second planes 32, and respectively this second plane 32 is wide-angle with this first plane 30 and intersects, for example 90 degree.Respectively this second plane 32 takes shape in all length of lever, makes its two ends can be adjacent to this two clamping part 24,26 trailing edge A respectively.Respectively the top on this second plane 32, root edge all protrude out first plane 30, as Fig. 4, form suitably height.This lever 22 is H shape in the section configuration of any position all as shown in Figure 5.

The molding mode on these two second planes 32 is as shown in Figure 6, and each is used in these 20 both sides, first plane and mold this two plane 32 with a roller 35 rollings in the both sides of lever 22.

With regard to the mechanics of materials, this 2 second plane 32 makes the section of lever 22 be H shape or claims I shape, and has preferable structural strength, simultaneously, because the whole length of lever is laid with these second planes 32, make the bulk strength homogeneous of lever, the relatively poor destroyed area of no intensity exists, so intensity is better than known spanner.

And these second planes 32 also can make the bigger contact area in the lever tool right side, 22 both sides, can improve grip effect, and can improve the contact area with hand, reduce the stress that acts on hand.

Figure 7 shows that the section configuration of another preferred embodiment of spanner 40 of the present utility model, wherein: each second plane 45 of lever 42 forms inclined-plane 47 in inwall, makes that the thickness on second plane is past interior cumulative, and has preferable intensity.

Figure 8 shows that the another preferred embodiment of spanner 50 of the present utility model, each second plane, 54 outer walls of its lever 52 are formed with burr 55.As shown in Figure 9, the surface system that goes out the roller 56 on this two plane 54 in order to roll forming is dentation, by this, can form these burrs 55 in each second plane outer wall, and friction is provided, and increases the skidproof effect when gripping.

Figure 10 shows that a preferred embodiment again of spanner 50 of the present utility model, wherein: this spanner be provided with in first plane 64 of lever 62 three open- works 66,66 ', 66 ", this three open-work 66 can be different width, and different with the A/F of clamping part 67.Respectively but the hexagonal that varies in size of these open-work 66 sockets or four jiaos nut or bolt 68 as Figure 11, can increase the serviceability of lever.

In addition, because the both sides up and down between first plane 64 of lever 62 and second plane 70 of both sides thereof respectively are formed with an accommodation space 72, one non-slippery substance 75 can be located in these accommodation spaces 72 in the mode of filling or penetrate, as Figure 12, non-slippery substance also is embedded in these open-works 66, increases the associativity of itself and lever.

This non-slippery substance 75 can be the material of soft or suitable hardness, the comfortableness in the time of can increasing the user and grip lever 52, and non-slippery substance 75 has the on-slip function simultaneously, to prevent the spanner slippage.

In addition, this non-slippery substance can be made into different colours, and tool recognition reaction and vision attract effect, to replace the metallic luster of conventional spanner dullness.

To sum up institute is old, and the utility model system makes the whole tool of spanner economize better structural strength, be easy to grip, and reduces the stress that acts on hand.And disclosed as can be known by each preferred embodiment, the utility model can make spanner have anti-skidding effect and tool is deposited attractability and recognition reaction, can attract customer ' interest, improves sales rate.

Figure 13 shows that force-bearing situation of the present utility model: M: bending moment 6: amount of deflection F: active force Y: young's modulus I: rotary inertia S: shearing

Mmax=F×L2 $\mathrm{\δ}=\frac{{\mathrm{FL}2}^3}{3\mathrm{YI}}(1+\frac{3L1}{2L2})$

Strong structural strengths such as spanner provided by the utility model, each position of its lever have are only born bending moment and shear stress when stressed.The section of this lever is H shape or claims I shape, and the more known article of structural strength are good.Even if under identical intensity, the utility model is compared with various known spanners, also has advantage in light weight and that save material.

Claims (8)

1. spanner includes: a lever, its at least one end are provided with a clamping part for clamping nut, bolt etc.; This clamping part forms a clamping plane; This lever axially on have one first plane, general and this clamping plane parallel of the section on this first plane; It is characterized in that: it includes in addition: two second planes, and it axially is located at this first plane, two sides respectively along lever, and is wide-angle with this first plane and intersects, and respectively this second planar shaping is in the length of economizing of lever.

2. spanner as claimed in claim 1 is characterized in that: the end abutment on these two second planes is in this clamping part trailing edge.

3. spanner as claimed in claim 1 is characterized in that: respectively this second plane protrudes out first plane to being less than apical margin or bottom line.

4. spanner as claimed in claim 1 is characterized in that: respectively the outer wall on this second plane is provided with burr.

5. spanner as claimed in claim 1 is characterized in that: respectively this second plane is in the position that protrudes out this first plane, and the width of its section is by increasing progressively toward in outward.

6. spanner as claimed in claim 1 is characterized in that: this first plane is provided with open-work.

7. spanner as claimed in claim 1 is characterized in that: this first plane and these second planes to end face that is less than this lever or bottom surface forms an accommodation space; In this accommodation space, be provided with a non-slippery substance.

8. spanner as claimed in claim 6 is characterized in that: this first plane and these second planes to end face that is less than this lever or bottom surface forms an accommodation space; In this accommodation space, be provided with a non-slippery substance, and this non-slippery substance is embedded in these open-works.

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