CN100522496C - Hollow knob spanner with strengthened structure - Google Patents
Hollow knob spanner with strengthened structure Download PDFInfo
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- CN100522496C CN100522496C CNB2007100011557A CN200710001155A CN100522496C CN 100522496 C CN100522496 C CN 100522496C CN B2007100011557 A CNB2007100011557 A CN B2007100011557A CN 200710001155 A CN200710001155 A CN 200710001155A CN 100522496 C CN100522496 C CN 100522496C
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Abstract
The invention relates to a hollow handle spanner with reinforced structure, comprising a head part and a neck part, one end of which is connected with the head part, a handle which consists of a holding part and a butting part; the butting part is connected with the other end of the neck part; a gradually contracting part is formed between the holding part and the butting part; the interior of the handle is hollow, thus leading the handle to have the effect of weight reduction; wherein, the wall thickness of the butting part of the handle is more than that of the gradually contracting part; the wall thickness of the gradually contracting part is more than that of the holding part; therefore, the invention can bear comparatively large torsion force, and reinforces the structure strength of the handle.
Description
Technical field
The present invention relates to a kind of spanner, relate in particular to the hollow knob spanner that a kind of weight reduction and tool are strengthened structure.
Background technology
The quite ripe industry that develops into of hand-held tool, each spanner manufacturer keeps on improving pursuing more handy, easier manufacturing, more can cost-effectively design invariably.The lever of spanner is by solid formula, improvement is open-core type, and reaches the design of saving in weight and cost, but still has disadvantages, therefore the present invention goes in line with the experience of being engaged in hand-held tool manufacturing research and development for many years, hopes the lever aspect that can develop a certain weight reduction and have sufficient intensity.
With reference to Figure 14, spanner for the solid formula of one, this kind spanner structure intensity is strong, the head 1 of described spanner, neck 2 and lever 3, be by the one forging and molding, its integral body is all solid shape, not only increased the expenditure of cost on the processing procedure, more significantly increase the weight of spanner, and its lever 3 is places of whole spanner volume maximum, and the increase of described lever 3 weight will cause the user to operate the load of spanner, quicken the consume of user's muscle power, reduced the efficient of work relatively, necessity of the improvement of being researched and developed has been arranged in fact.
With reference to Figure 15, other has a kind of hollow type spanner, in order to improve the problem of solid formula spanner Heavy Weight, the lever 4 and the head 5 of described tubulose join, and form a spanner, yet, the lever 4 of described hollow form is when being shaped, and the wall thickness of described lever 4 equates, though reach the purpose of certain loss of weight, but this structure can't be born bigger torsion when pulling.Described lever 4 includes gripping place 7 of the joint 6 and big external diameter of a less external diameter; the two convergent place 8 that is shaped; when the lever 4 of identical wall thickness is pulled; hand is gripped on gripping place 7; at this moment, the joint 6 that is hollow form need bear the torsion of switching with convergent place 8, and torsion and shearing that regular meeting is reversed because of gripping are excessive; make lever semi-finals degree not enough and rupture, so in addition improved necessity is still arranged.
In view of this, the inventor is for solving above-mentioned variety of problems, it is the many years of experience of complying with the manufacturing of thing hand-held tool, research and development, expect and to create practical invention, finally the well-designed the present invention of going out has the spanner of weight reduction and tool reinforcement structure after repeatedly exploitation improves, it can overcome the disadvantages that existing wrench body is derived, and is in fact one to have the invention of novelty and progressive.
Summary of the invention
Solid formula spanner Heavy Weight and material cost expenditure are high, and the hollow type spanner is because of the identical relation of wall thickness, and when pulling, torsion and shearing that meeting is pulled because of gripping are excessive, and lever is ruptured easily, in the use the strength structure deficiency.The object of the present invention is to provide a kind of material, in light weight and make wrench body have enough intensity of saving, do not cause described lever to rupture in the application of force.
To achieve these goals, the invention provides the hollow knob spanner that a kind of tool is strengthened structure, include a head; One neck, wherein an end and head join; One lever includes a grip part and a junction surface, and the described junction surface and the described neck other end join, and forms a convergent portion between described grip part and described junction surface, is to be hollow form in the described lever, makes described lever have the effect of loss of weight.
Wherein, the wall thickness at described lever junction surface is greater than the wall thickness of convergent portion, and the wall thickness of convergent portion so can bear bigger torsion, makes the structural strength of described lever more strengthen greater than the wall thickness of grip part.
Go out the present invention and have following advantage:
1. tool of the present invention is strengthened the hollow knob spanner of structure, and wherein the wall thickness of lever of the present invention closes and is: the wall thickness at junction surface〉wall thickness of convergent portion〉wall thickness of arc portion〉wall thickness of grip part.Bear big torsion by thick section, and light filling bar is for gripping, can possesses loss of weight simultaneously and strengthen the characteristic of structure.
2. tool of the present invention is strengthened the hollow knob spanner of structure, and the open shape in the lever wherein of the present invention makes described lever can save material, and can take in tool heads.
3. tool of the present invention is strengthened the hollow knob spanner of structure, wherein of the present inventionly covers part and is covered on afterbody, more strengthens the structural strength of lever.
4. tool of the present invention is strengthened the hollow knob spanner of structure, but hollow lever wherein of the present invention weight reduction and save material.
Description of drawings
Fig. 1 is the stereo appearance figure of first embodiment of the invention;
Fig. 2 is the fragmentary, perspective view of first embodiment of the invention;
The cutaway view that Fig. 3 is got by the 3-3 hatching of Fig. 1 for first embodiment of the invention is shown the schematic diagram of described lever wall thickness;
Fig. 4 is the fragmentary, perspective view of second embodiment of the invention;
The cutaway view that Fig. 5 is got by the 5-5 hatching of Fig. 4 for second embodiment of the invention is shown the schematic diagram of described lever wall thickness;
Fig. 6 is the schematic diagram of the lever wall thickness of third embodiment of the invention;
Fig. 7 is the fragmentary, perspective view of fourth embodiment of the invention;
The cutaway view that Fig. 8 is got by the 8-8 hatching of Fig. 7 for fourth embodiment of the invention is shown the schematic diagram of described lever wall thickness;
Fig. 9 is the schematic diagram of the lever wall thickness of fifth embodiment of the invention;
Figure 10 is the schematic diagram of the lever wall thickness of sixth embodiment of the invention;
Figure 11 is the schematic diagram of the lever wall thickness of seventh embodiment of the invention;
Figure 12 is the schematic diagram of the lever wall thickness of eighth embodiment of the invention;
Figure 13 is the schematic diagram of the lever wall thickness of ninth embodiment of the invention;
Figure 14 is the schematic diagram of existing solid formula spanner;
Figure 15 is the schematic diagram of existing hollow type spanner.
Description of reference numerals
(having now)
1 head; 2 necks; 3 levers; 4 levers; 5 heads; 6 joints; 7 grippings place; 8 convergent places (the present invention); 10 heads; 11 spine move parts; 12 reversing switches; 13 accommodation spaces; 20 necks; 21 slotted eyes; 30 levers; 31 grip parts; 32 junction surfaces; 33 afterbodys; 331 holes; The bending of 332 arcuations; 34 convergent portions; 341 arc portions cover part; 50 gripping members; The external diameter of D1 grip part; The external diameter of D2 arc portion; The external diameter of D3 convergent portion; The external diameter at D4 junction surface; The wall thickness of d1 grip part; The wall thickness of d2 arc portion; The wall thickness of d3 convergent portion; The wall thickness at d4 junction surface.
The specific embodiment
Relevant the technology used in the present invention, means and effect thereof, now lift a preferred embodiment and cooperate graphic detailed description as after, this only for the usefulness of explanation, is not subjected to the restriction of this kind structure in patent application.
Referring to figs. 1 through Fig. 3, be the stereo appearance figure and the three-dimensional exploded view of first embodiment of the invention.Tool of the present invention is strengthened the hollow knob spanner of structure, includes a spanner and is provided with a head 10, a neck 20 and-lever 30.Described head 10 is provided with a spine move part 11 and a reversing switch 12.Described head 10 convergents and form the neck 20 of described pipe shape make an end of described neck 20 join with described head 10 for big footpath, and the other end is for to join than path and described lever 30.In present embodiment, described head 10 is to be embodied as single type with described neck 20, processes in the mode of forging, and has high strength.
Described lever 30 has a grip part 31, and two ends of described grip part 31 are respectively a junction surface 32 and an afterbody 33 than path, and described afterbody 33 bends inwards and forms an axial hole 331.The external diameter at described junction surface 32 is ends that are same as described neck 20, and engages with the friction fusing mode.Described grip part 31 32 is to be big external diameter compared to the junction surface, and hand is gripped easily.32 at described grip part 31 and described junction surface form a convergent portion 34,31 places, described convergent portion 34 contiguous described grip parts are an arc portion 341, making the grip part 31 that is big footpath form an arc portion 341 that relaxes convergent earlier reduces external diameter, be one than path via convergent portion 34 to junction surface 32 again, make the curve of lever 30 have aesthetic feeling gently.And external diameter does not more have the problem that stress is concentrated via mild dwindling, and not only reaches the problem of more taking into account intensity attractive in appearance.
Hollow form in the described lever 30 passes to described junction surface 32 mutually by afterbody 33, and makes described lever 30 integral body be penetration state, and described lever 30 can be embodied as hollow pipe, and can reduce production costs.Described lever 30 is formed with the wall thickness d1 of a grip part, the wall thickness d2 of an arc portion, the wall thickness d3 of a convergent portion and the wall thickness d4 at a junction surface.Outer diameter D 1 everywhere of described grip part all equates, and its thickness also all equates the everywhere.The outer diameter D 4 and the thickness at described junction surface, also the everywhere all equates.The outer diameter D 3 of the outer diameter D 2 of described arc portion and described convergent portion is by gradually little greatly D1 by grip part 31 to junction surface 32〉D2〉D3〉D4, and its thickness is by Bao Jianhou.Wherein, the thickness of described wall thickness is closed and to be: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.Bear big torsion by the thicker junction surface 32 of wall thickness, and the thin grip part 31 of wall thickness only supplies to grip, can take into account loss of weight simultaneously and strengthen structure.And the wall thickness d3 of convergent portion design makes convergent portion 34 not because of convergent fracture easily, still can bear the torsion of grip part 31 switchings.
The hollow shape of described lever 30 can reduce production costs, and has the factor of saving material and loss of weight.But because of the thin factor of wall, when being gripped on grip part 31, the application of force is rotated described spanner and is used the driving spiral lock, described grip part 31 causes caving inward because of the application of force is excessive easily, and the present invention is formed with arcuation bending 332 in afterbody 33 and inwardly contracts, and makes described afterbody 33 can bear big strength and does not cave inward.When gripping described grip part 31 application of forces, strength will be dispersed to described arcuation bending 332.Make described lever 30 have the effect of loss of weight by the space in the described lever 30, and described arcuation bending 332 make described lever 30 can bear bigger curable grip.
Hollow form in the described lever 30 can be for putting tool heads or spiral lock, as screw or nut.Can make the operator have the space of taking in, need not put described finding in addition.
One covers part 40, with dismountable hole 331 that is incorporated into described afterbody 33, and seals described lever 30, covers covering of part 40 via described, and the structural strength of described lever 30 afterbodys 33 is strengthened.
With reference to Fig. 4 and Fig. 5, be the schematic diagram of second embodiment of the invention.Described spanner includes described head 10, neck 20 and lever 30.Be formed with an accommodation space 13 in the described head 10.The embodiment of described lever 30 is to be same as first embodiment, and the arcuation bending 332 of only described afterbody 33 is open shape and is not provided with any assembly.The thickness of described lever 30 is closed: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
With reference to Fig. 6, be the schematic diagram of third embodiment of the invention.The head 10 of described spanner, neck 20 are one of the forming with lever 30, and described head 10 is same as second embodiment.Hollow forms in the described lever 30 pass to described junction surface 32 mutually by afterbody 33, and the wall thickness relation of described lever 30 is same as first embodiment and is: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
With reference to Fig. 7 and Fig. 8, be the schematic diagram of fourth embodiment of the invention.Form an accommodation space 13 in the head 10 of described spanner, described neck 20 is provided with a slotted eye 21, and described slotted eye 21 is connected with described hollow lever 30, and the hollow form in the described lever 30 passes to described junction surface 32 mutually by afterbody 33.Described slotted eye 21 more can reach the effect of weight reduction.The wall thickness relation of described lever 30 is same as first embodiment and is; The wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
With reference to Fig. 9, be the schematic diagram of fifth embodiment of the invention.The head 10 and the neck 20 of described spanner are to be same as second embodiment.Hollow forms in the described lever 30 pass to described junction surface 32 mutually by afterbody 33, and the wall thickness relation of described lever 30 is same as first embodiment and is: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
With reference to Figure 10, be the schematic diagram of sixth embodiment of the invention.The head 10 of described spanner, neck 20 are one of the forming with lever 30.Hollow forms in the described lever 30 pass to described junction surface 32 mutually by afterbody 33, and the wall thickness relation of described lever 30 is same as first embodiment and is: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
With reference to Figure 11, be the schematic diagram of seventh embodiment of the invention.The head 10 and the neck 20 of described spanner are to be same as second embodiment.Hollow form in the described lever 30 passes to described junction surface 32 mutually by afterbody 33, and described afterbody 33 is provided with the described part 40 that covers and covers, and the structural strength of described lever 30 afterbodys 33 is strengthened.The wall thickness of described lever 30 relation is same as first embodiment and is: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d4 of grip part.
With reference to Figure 12, be the schematic diagram of eighth embodiment of the invention.The head 10 of described spanner, neck 20 are one of the forming with lever 30, and described head 10 is same as second embodiment.Formation one is the convergent portion 34 of taper in the middle of described grip part 31 and the described junction surface 32, hollow forms in the described lever 30 pass to described junction surface 32 mutually by afterbody 33, and the wall thickness of described lever 30 closes and is: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d1 of grip part.
With reference to Figure 13, be the schematic diagram of ninth embodiment of the invention.Described wrench body includes head 10, neck 20 and lever 30.Described head 10 is articulated in described neck 20, forms the aspect of a swing-head spanner.The embodiment of described lever 30 is to be same as first embodiment, and the arcuation bending 332 of only described afterbody 33 is open shape and is not provided with any assembly, and is sheathed on the grip part 31 of described lever 30 with a gripping member 50.The thickness of described lever 30 is closed: the wall thickness d4 at junction surface〉the wall thickness d3 of convergent portion〉the wall thickness d2 of arc portion〉the wall thickness d1 of grip part.
Tool of the present invention is strengthened the hollow knob spanner of structure, is hollow form in the described lever, and can saves material and weight.Wall thickness via the junction surface〉wall thickness of convergent portion〉wall thickness of arc portion〉wall thickness of grip part, bear big torsion by the thicker junction surface of wall thickness, and the thin grip part of wall thickness can be taken into account loss of weight simultaneously and strengthen structure only for gripping.And the wall thickness of described convergent portion makes convergent portion not because of convergent fracture easily also greater than the wall thickness of grip part, still can bear the torsion of grip part switching.
The above, only be preferred embodiment of the present invention, when can not with qualification scope of the invention process, so the displacement of the change of numerical value or equivalent elements such as, or, all should still belong to the category that patent of the present invention contains according to equalization variation and modification that claim of the present invention is done.
Claims (23)
1. the hollow knob spanner of a tool reinforcement structure is characterized in that, includes:
One spanner is provided with a head, a neck and a lever, and described lever includes a grip part and a junction surface, and described junction surface and described neck join, and forms a convergent portion between described grip part and described junction surface, is to be hollow form in the described lever;
Wherein, the wall thickness at described lever junction surface is greater than the wall thickness of convergent portion, and the wall thickness of convergent portion is greater than the wall thickness of grip part.
2. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described convergent portion forms an arc portion in place, contiguous described grip part.
3. tool as claimed in claim 2 is strengthened the hollow knob spanner of structure, it is characterized in that: the external diameter of described arc portion is to be the mitigation gradually-reducing shape compared to described grip part.
4. tool as claimed in claim 2 is strengthened the hollow knob spanner of structure, it is characterized in that: described arc portion place forms the wall thickness of an arc portion, make the wall thickness of the wall thickness of convergent portion greater than arc portion, and the wall thickness of arc portion is greater than the wall thickness of grip part.
5. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: the space in the described lever passes to described junction surface mutually by the grip part that is open shape, and the space in the described lever is sealed at described junction surface.
6. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: the space in the described lever is to pass to convergent portion and junction surface mutually by the grip part that is open shape, and makes described lever integral body be penetration state.
7. tool as claimed in claim 6 is strengthened the hollow knob spanner of structure, and it is characterized in that: described neck is provided with a slotted eye, and described slotted eye is connected with described hollow lever.
8. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, and it is characterized in that: the wall thickness at described junction surface is to be all thick.
9. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, and it is characterized in that: the wall thickness of described grip part is to be all thick.
10. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: the wall thickness of described convergent portion is thicker for place, contiguous junction surface, and place, contiguous grip part is thinner.
11. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described lever includes an afterbody.
12. tool as claimed in claim 11 is strengthened the hollow knob spanner of structure, it is characterized in that: described afterbody forms arcuation bending.
13. tool as claimed in claim 11 is strengthened the hollow knob spanner of structure, it is characterized in that: described afterbody is to be straight tube-like.
14. tool as claimed in claim 11 is strengthened the hollow knob spanner of structure, it is characterized in that: described afterbody is provided with one and covers part.
15. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described head convergent and form the neck of a pipe shape.
16. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: an end of described neck joins with head for big footpath, and the other end is for to join than path and lever.
17. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described neck is to engage with the friction fusing mode with described lever.
18. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described neck and described lever are integrally formed.
19. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described head is provided with a spine move part and a reversing switch.
20. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described head is provided with an accommodation space.
21. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described junction surface is to be taper.
22. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: described head is articulated in described neck, forms the aspect of a swing-head spanner.
23. tool as claimed in claim 1 is strengthened the hollow knob spanner of structure, it is characterized in that: include the grip part that a gripping member is sheathed on described lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100011557A CN100522496C (en) | 2007-01-19 | 2007-01-19 | Hollow knob spanner with strengthened structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100011557A CN100522496C (en) | 2007-01-19 | 2007-01-19 | Hollow knob spanner with strengthened structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101224569A CN101224569A (en) | 2008-07-23 |
| CN100522496C true CN100522496C (en) | 2009-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100011557A Active CN100522496C (en) | 2007-01-19 | 2007-01-19 | Hollow knob spanner with strengthened structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100522496C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934310B (en) * | 2009-06-30 | 2012-05-30 | 极点股份有限公司 | Wrench tool and bend manufacture procedure thereof |
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2007
- 2007-01-19 CN CNB2007100011557A patent/CN100522496C/en active Active
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| Publication number | Publication date |
|---|---|
| CN101224569A (en) | 2008-07-23 |
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