CN1701198A

CN1701198A - Lock nut and wrench for leg assembly of home appliance

Info

Publication number: CN1701198A
Application number: CNA2004800009778A
Authority: CN
Inventors: 崔康模; 权大禧; 孔晟洛
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2003-05-20
Filing date: 2004-05-19
Publication date: 2005-11-23
Anticipated expiration: 2024-05-19
Also published as: KR20040099835A; CN100470110C; KR100662301B1

Abstract

Disclosed are lock nuts (100) and (100a) for preventing a leg bolt (4) from loosening from a leg assembly supporting electric home appliances, and a wrench (500) for loosening or tightening the lock nuts (100) and (100a). The lock nuts (100) and (100a) includes a hub having a screw hole (111), a plurality of ribs extended in a radius direction from a circumferential surface of the hub, and having sides (125) and (125a) over which the wrench (500) or a finger is hooked, and supplementary member (130) provided allowing the wrench or finger to access form the radius direction of the hub to the sides (125) and (125a), and coupling the ribs (120). The wrench (500) includes a long grip having at least one projection (550) and (560) on an outer circumferential surface thereof, and a box end (530) or an open end (520) provided at either of both ends thereof.

Description

The locking nut and the spanner that are used for leg assembly of home appliance

Technical field

The present invention relates to a kind of locking nut and spanner that is used for leg assembly of home appliance, especially relate to a kind of locking nut and spanner, this locking nut and spanner are used to prevent that leg bolt from coming off from the leg assembly that supports home appliances (for example, washing machine or clothes drier).

Background technique

Generally speaking, the leg that is used for household electric appliance is set at its underpart, is used to support these household electric appliance.When leg was applied to household electric appliance, the working life of these household electric appliance and reliable operation all were subjected to the very big influence of installation conditions, this leg generally include be positioned at being used on each angle of household electric appliance control easily its height screw structural.In Fig. 1, show common leg assembly and be set to example on the household electric appliance with this screw structural.Hereinafter, with reference to Fig. 1 this leg assembly is described in more detail.

Screw 2a is set on the base, and this base comprises the bottom of household electric appliance, and the leg bolt 4 that has with the contacted wide head 4a in floor is bonded together with screw 2a.In this example, this leg bolt comprises elbow 4b easily tightening or unclamp screw by using such as the such instrument of spanner, and this spanner have as shown in Figure 3 at handle 5a openings at two ends end 5a and box-shaped end.

For preventing that bolt 4 from coming off, this leg assembly also comprises packing ring 3 and locking nut as shown in Figure 21.In this case, packing ring 3 engages so that push down screw 2a as shown in Figure 2 with base 2, and locking nut 1 engage with leg bolt 4 so as with packing ring 3 fluid-tight engagement.

In order to adjust the height of leg assembly with said structure, by unclamping with the locking nut 1 of packing ring 3 fluid-tight engagement and rotating the height that leg bolt 4 is controlled leg bolt 4, then, locking nut 1 be screwed to packing ring 3 fluid-tight engagement together.Using under the situation of locking nut 1, the shape of locking nut 1 not only makes to be caught it with hand very difficultly, and makes that it is also very difficult with as shown in Figure 3 spanner rotation.

Therefore, during rotation (tightening) when needing initial rotation (unclamping) locking nut 1 of high pulling torque and in the end, the workman is very difficult when rotational lock nut 1, thereby caused owing to lacking the strength tighten and made the possibility that locking nut 1 unclamps, also caused ineffective problem when this leg assembly being installed or control the height of this leg assembly.

Summary of the invention

Therefore, the present invention relates to a kind of locking nut, this locking nut is used for the household electric appliance leg assembly, and it can fully eliminate one or more problems that narrow limitation and defective owing to correlation technique cause.

The workman the object of the present invention is to provide a kind of locking nut and a kind of spanner that is used to unclamp or tighten this locking nut that is used on the household electric appliance leg assembly, so that can easily unclamp or tighten this locking nut.

Other advantage, purpose and feature of the present invention will be partly articulated or know from enforcement of the present invention in the following description, and for those those of ordinary skill in the art, by studying following content, other advantage of the present invention, purpose and feature will become apparent to a certain extent.Particularly, by the structure described in written description and claim and the accompanying drawing, will know purpose of the present invention and other advantage.

In order to realize that these purposes are with other advantage and according to purpose of the present invention, such as here embodiment and rough as described in, the locking nut that is used for the household electric appliance leg assembly comprises: have the hub (hub) of screw, leg bolt is bonded together by this screw and household electric appliance; A plurality of ribs, these ribs radially extend from the circumferential surface of this hub, and have side 125,125a, can be with spanner 500 or finger hook in the above; And auxiliary part 130, its can allow this spanner or finger along this hub radially be close to side 125 and 125a, and be bonded together with a plurality of ribs 120.

In this case, the height that needs the height of this rib to be equal to or less than the height of this hub and this auxiliary part is lower than the height of this rib.Simultaneously, require this side vertical with horizontal plane or tilt to the vertical line direction.

The end of at least one side from this hub to this rib in two sides of this rib becomes greatly gradually, and when instrument from this hub radially near the time, the end of this rib and two sides are meshed with this instrument.

Simultaneously, this auxiliary part comprises extended element, this extended element from the circumferential extension of this hub to the space between this rib.In this case, first side in two sides of this rib tilts, like this, its from the top of this rib to this extended element progressive additive, and second side of this rib tilts, like this, it becomes thicker at bottom to this extended element from this rib.

In addition, this extended element tilts, and like this, will easily touch this side from the radially approaching instrument of this hub or finger.In this case, this extended element tilts, and like this, the first end of the extended element that joins to this hub is than the second end height that joins this rib end to.

Simultaneously, be set in abutting connection with the top of rib end the end of this extended element or the position of bottom, like this, will become bigger in abutting connection with the single area that exposes of the part of this rib end.

The middle part that needs this extended element end is to this hub bending, and the end of this rib forms the corner of locking nut, and the end of this rib is circular.

Simultaneously, this auxiliary part comprises wheel rim (rim), is used to engage the end of this rib.In this case, require this wheel rim to be lower than this rib and join the top or the bottom of this rib to, this wheel rim and horizontal plane are perpendicular simultaneously.Need be arranged in a top that joins this rib to of two wheel rims on two sides of this rib end, another wheel rim then joins this rib bottom to.Simultaneously, the anastomosis part of rib, extended element and wheel rim is circular.

In another aspect of this invention, provide a kind of spanner, this spanner comprises: long handle has at least one protuberance at the external peripheral surface of this long handle; Box-shaped end or opening end are separately positioned on two ends of this long handle.

In this case, protuberance is set on the joining portion of handle and box-shaped end, perhaps is arranged on the joining portion of handle and opening end.In this case, it is crooked needing this anastomosis part.Simultaneously, this protuberance is to be hooked in the hook on the protuberance of this external peripheral surface and to be meshed so that unscrew the wheel tooth of this nut with the external peripheral surface of nut.

Being understandable that aforementioned general description of the present invention and ensuing detailed description are exemplary and explanat, is to be used for further explaining claimed scope of the present invention.

Description of drawings

Accompanying drawing shows specific embodiments of the invention and has explained principle of the present invention in conjunction with describing, and the application's a part is incorporated and constituted to accompanying drawing wherein into.

Fig. 1 shows the sectional view of the leg assembly that shows normal domestic use electrical equipment;

Fig. 2 shows the locking nut plan view of the leg assembly of displayed map 1;

Fig. 3 shows the common wrench situation plan of the leg bolt that shows the leg assembly be used to dismantle Fig. 1;

Fig. 4 shows demonstration locking nut stereogram according to a first advantageous embodiment of the invention;

Fig. 5 shows the locking nut situation plan of displayed map 4;

Fig. 6 shows the sectional view that demonstration is applied to locking nut according to a first advantageous embodiment of the invention leg assembly;

Fig. 7 shows the stereogram of improvement specific embodiment of the locking nut of displayed map 4;

Fig. 8 illustrates the locking nut situation plan of displayed map 7;

Fig. 9 shows and shows spanner flat layout plan according to a second, preferred embodiment of the present invention;

Figure 10 shows the embodiment's who shows the spanner that uses Fig. 9 situation plan;

Figure 11 illustrates the stereogram of improvement specific embodiment of the spanner of displayed map 9; And

Figure 12 shows the embodiment's who shows the spanner that uses Figure 11 situation plan.

Embodiment

Below will be at length with reference to the preferred embodiments of the present invention, embodiment is shown in the drawings.Under any circumstance, the identical or like for relating in whole accompanying drawings all will use identical drawing reference numeral.

In the present invention, provide the different embodiments who is used for installation or removal household electric appliance leg assembly.For example, in first specific embodiment and in improvement specific embodiment as Fig. 4 first specific embodiment extremely shown in Figure 8, the structure of having improved locking nut is to stop (preventing) leg bolt, and in second specific embodiment and in improvement specific embodiment, improved the structure that is used to tighten or unclamp the spanner of leg bolt as Fig. 9 second specific embodiment extremely shown in Figure 12.Therefore, will the present invention be described in more detail by each specific embodiment and with reference to accompanying drawing hereinafter.

First specific embodiment and improvement specific embodiment thereof

According to first specific embodiment of the present invention and improvement specific embodiment thereof, improved the structure of locking nut, so that solve traditional problem, it is described hereinafter in more detail.

At first, with reference to Fig. 4, comprise according to the locking nut 100 of first specific embodiment of the present invention: hub 110, rib 120 and auxiliary part 130.

Hub 110 is have predetermined altitude cylindrical, and upper surface and the lower surface of screw 111 by hub 110 is set.As a reference, leg bolt 4 is bonded together with screw 111 and passes hub 110, and the base 2 of leg bolt 4 and household electric appliance be bonded together (with reference to Fig. 6).

Rib 120 radially extends from the circumference of hub 110.A plurality of ribs 120 with equal length along the circumference of hub 110 with the same intervals setting.In this case, the height of rib 120 equals or is slightly less than the height of hub 110.

Rib 120 comprises side 125, is hooked on this side from the radially approaching instrument of hub 110 (such as spanner 500 or finger), so that around leg bolt 4 rotation these hubs (with reference to Fig. 6).In this case, as shown in Figure 4 and Figure 5, side 125 is configured to vertical with horizontal plane.

Auxiliary part 130 is by engaging the intensity that increases locking nut 100 with a plurality of ribs 120.Arrange that auxiliary part 130 to allow spanner 500 or finger near the side 125 of rib 120, below will describe this structure in detail.

At first, the height of auxiliary part 130 is lower than the height of rib 120, with guarantee to be used for spanner 500 or finger from hub 110 radially near the space of the side 125 of rib 120.For example, as shown in Figure 4, auxiliary part 130 comprises at least one in extended element 131 or the wheel rim 135.Hereinafter, will describe extended element 131 and wheel rim 135 in detail.

As shown in Figure 4, extended element 131 from the circumferential extension of hub 110 to the space between the rib 120.Extended element 131 not only is bonded together with hub 110, and is bonded together respectively with the side of rib 120.Therefore, the rigidity that will have the rib 120 of length carries out replenishing effectively.

Extended element 131 has enough spaces between the upper surface of two ribs 120 and extended element 131 or between the lower surface of two ribs 120 and extended element 131, spanner or finger will be easily from the spaces between each rib that radially inserts a plurality of ribs 120 of hub 110 like this, thereby are easy to the side 125 near a plurality of ribs 120.

The end of the end of rib 120 and extended element 131 is arranged on the bottom or the top of rib 120 contiguously.Then, the space between two ribs 120 and the extended element 131 that is to say, in this space, with spanner 500 or finger from hub 110 radially near the side 125 of rib 120.In addition, rib 120 ends on the side 125 of rib 120 expose area, that is to say that the area that spanner 500 or finger can contact becomes bigger.

Simultaneously, the rigidity that extended element 131 fully replenishes a plurality of ribs 120 is set.Extended element 131 extends from the middle part of the short transverse of this hub, and the first end of hub 110 is configured to be higher or lower than the second end in abutting connection with rib 120 outer ends.In this case, extended element 131 is configured to have the height that is lower than rib 120.

As shown in Figure 4, the true dip direction that is positioned at two extended elements on two sides of a rib 120 is different mutually.In other words, if other two extended elements 131 that predetermined extended element 131, is positioned at these 131 two sides of predetermined extended element so in that 120 end raises gradually from this hub to rib are in that 120 end becomes lower from hub 110 to rib.

If as mentioned abovely constitute like that, then extended element 131 not only is engaged to the side of rib 120, and the rigidity of rib 120 carried out effectively replenishing, this is to be different mutually because join the true dip direction of two extended elements 131 on two sides of a rib 120 to.

And, if as mentioned abovely constitute like that, will provide side, big space to the rib 120 of the end of adjacency rib 120, spanner or finger just can be easy near side 125 like this.

Simultaneously, the external peripheral surface of locking nut 100 is dihedral rather than circle.For this reason, the end of rib 120 is outstanding having the edge of locking nut 100, and as shown in Figure 4 and Figure 5, the middle part of extended element 131 ends is to hub 110 bendings.

Simultaneously, as shown in Figure 4, wheel rim 135 engages with the end of rib 120.The wheel rim 135 that highly is lower than rib 120 engages with the top or the bottom of rib 120.In the description that is described in extended element 131, can make spanner or finger be easy to reach the side 125 of rib 120.

Wheel rim 135 is configured to level.As shown in Figure 6, be arranged on a top that joins rib 120 in two wheel rims on two sides of rib 120 ends, and another wheel rim joins the bottom of rib 120 to, the rigidity of two ribs 120 that adjoin each other is like this strengthened effectively, and guaranteed to be used for spanner or finger can be by space from the side 125 that radially easily is close to rib 120 of hub 110.

Simultaneously, when extended element 131 and wheel rim 135 were set on the auxiliary part 130, wheel rim 135 engaged with the end of rib 120.In this case, wheel rim 135 extends vertically up to the top or the bottom of rib 120 from the end of extended element 131.

More specifically, when extended element 131 when the opposite flank of the side of adjacency hub 110 tilts, wheel rim 135 extends vertically up to the top of rib 120 from the end of extended element 131.When extended element 131 when the opposite flank of the side of adjacency hub 110 tilts, wheel rim 135 extends vertically up to the bottom of rib 120 from the end of extended element 131.Simultaneously, the anastomosis part of wheel rim 135, extended element 131 and rib 120 is circular, but not obvious.

According to the present invention, upper surface and lower surface that the locking nut 100 of mentioning structure above having or not direction and forms with same shape.In other words, when locking nut 100 was reversed and rotates to predetermined angle, the shape of locking nut 110 was identical with the rotation and the preceding shape of overturning.

Therefore, the workman can be set to locking nut 100 on the leg assembly of household electric appliance, and need not to consider and should which face up that this is very easily.

According to the present invention, as shown in Figure 6, locking nut 100 is used to leg bolt 4 is fixed on the leg assembly of the base 2 that joins household electric appliance to.Hereinafter, with reference to Fig. 6 the process of unclamping or tightening locking nut 100 is described.As a reference, the part of the locking nut among Fig. 6 100 be take from Fig. 5 the I-I line cut part open.

At first, if when this leg assembly is set on the base 2 of household electric appliance, need adjust the height of leg bolt 4, then unclamp locking nut 100.In this case, the opening end of spanner 500 is from the end that radially is close to rib 120 of hub 110.Then, as shown in Figure 6, the opening end of spanner 500 is meshed with the end of rib 120 and two sides of side 125.In this case, the opening end of spanner 500 is between two wheel rims 135, and these two wheel rims engage with the upper and lower of rib 120 respectively.

In this case, spanner 500 is pulled at or is pushed away so that locking nut 100 is unclamped in rotation on a direction.Then, when opening end is clamped by two sides of rib 120, the opening end of conversion spanner 500, thus easily unclamp locking nut 100.

Simultaneously, although when beginning, exert oneself the rotational lock nut, after locking nut 100 is rotated several times, just can use very little strength rotational lock nut 100 easily.Therefore, use this spanner rotational lock nut 100 after, hold the dihedral external peripheral surface of locking nut 100 and rotate this locking nut, just can unclamp locking nut 100.In this case, being inserted in finger between the rib 120 by use draws or pushes away and make it closely just can rotate this locking nut attached to the side 125 of rib 120.

When in case locking nut 100 is totally released, can be by adjust the height of leg bolt 4 around the base 2 rotation leg bolt 4 of household electric appliance.Behind the height of adjusting leg bolt 4, again locking nut 100 is tightened back.

Locking nut 100 according to first specific embodiment of the present invention has a kind of structure, and spanner or finger can support the side of spanner 500 or finger from radially easily being close to of hub 110 in this structure, that is to say, are close to the side 125 of rib 120.Therefore, when household electric appliance are installed, perhaps when adjusting the height of leg bolt 4, can use spanner 500 or finger easily to finish this work.

Simultaneously, although use spanner or finger to unclamp or tighten locking nut 100 according to first specific embodiment of the present invention, the area that finger contacts is very little, because the lateral vertical of rib 120 is in horizontal plane.Therefore, the present invention also comprises the locking nut 100a according to first specific embodiment of the present invention, makes the workman can use finger to operate easily, and this names a person for a particular job and describes in more detail in the back.

As shown in Figure 7 and Figure 8, have the structure closely similar with locking nut according to the present invention 100 according to the locking nut 100a of first specific embodiment of the present invention, locking nut 100 is described with reference to Fig. 4 and Fig. 5.Compare with side 125, the side 125a of spanner 500 or finger hook rib 120 is thereon comprised bigger area according to the locking nut 100 of first specific embodiment of the present invention.

As shown in Figure 7, the side 125a of locking nut 100a favours vertical surface.In other words, be arranged on the side 125a of the rib 120 between the upper face of the upper end portion of rib 120 and extended element and be arranged on the bottom of rib 120 and the bottom of extended element 131 between the side 125a of rib all favour vertical surface respectively.

In this case, first side of two side 125a of rib 120 tilts, so that from the top of rib 120 to extended element 131 progressive additives, more particularly, from the top of rib 120 to having the upper surface progressive additive that is arranged in abutting connection with the extended element 131 of the end of rib 120 bottoms.Second side of two side 125a of rib 120 tilts, so that from the bottom of rib 120 to extended element 131 progressive additives, more particularly, from the bottom of rib 120 to having the lower surface progressive additive that is arranged in abutting connection with the extended element 131 of the end on rib 120 tops.

Simultaneously, the side 125a that at least one inclination is set makes from hub 110 to rib 120 end have bigger area.So, utilize spanner or finger from hub 110 radially be close to its middle part, that is to say that the surface that directly contacts in abutting connection with the side 125a institute of the end of rib 120 has just had bigger area.

When the side of rib 120 125a was inclination, the surface that spanner 500 or finger can contact became bigger.Therefore, the workman not only can use spanner but also can use finger, directly unclamps or tightens locking nut 100a with big strength.

As mentioned above, according to first specific embodiment and improved specific embodiment, improved the locking nut 100 that is used for fixing leg bolt 4 and the structure of 100a, the workman just can make things convenient for accurately and operates like this.

Second specific embodiment and improvement specific embodiment thereof

In second specific embodiment of the present invention and improvement specific embodiment, improved the structure of the instrument (such as spanner) that is used to unclamp locking nut and leg bolt, so that solve problem easily, this is described in more detail with reference to Fig. 9 to Figure 12.

At first, with reference to Fig. 9 to Figure 12, according to second specific embodiment of the present invention and improvement specific embodiment, spanner 500 comprises handle 510, at least one joins opening end 520 or box-shaped end 530 on the handle 510 to, and at least one is arranged on the protuberance on the external peripheral surface of handle 510.

In this case, the handle 510 that grasps of workman is very long.Opening end 520 and box-shaped end 530 are separately positioned on two ends of handle 510, are used to unclamp or tighten each bolt or nut.Opening end 520 or box-shaped end 530 only can be arranged on an end in two ends of handle 510, perhaps can be only with one in opening end 520 and the box-shaped end 530 two ends that are set to handle 510.

Simultaneously,, protuberance 550 and 560 is arranged on the joining portion to shown in Figure 12 as Fig. 9, this joining portion joins handle 510 on the opening end 520 on the external peripheral surface of this handle, perhaps with on handle 510 and box-shaped end 530 engaging portion.So, even the workman grasps handle 510, workman's hand can not touch protuberance 550 and 560 yet.Yet not limited thereto, protuberance 550 and 560 also can be arranged on another position of external peripheral surface of handle 510 external peripheral surfaces or opening end 520 and box-shaped end 530.

To shown in Figure 12, the protuberance 550 and 560 that is arranged on the joining portion is crooked as Fig. 9.In this case, the curvature at this joining portion is with identical or approximate with the curvature of the external peripheral surface of released locking nut 1 (the particularly locking nut 1 of fixed feet bolt).

Simultaneously, as Fig. 9 and shown in Figure 10,, hook 550 is set to protuberance 550 on the spanner 600 according to the present invention.In this case, as shown in figure 10, hook 550 is arranged to be hooked on the protruding part or wheel tooth 1a on the external peripheral surface that is arranged on locking nut 1.Hook 550 can be set at the joining portion.

On the other hand, according to second specific embodiment of the present invention, wheel tooth 560 is set to the protuberance of spanner 550.In this case, wheel tooth 560 is meshed with a plurality of wheel tooth 1a on the external peripheral surface that is arranged on locking nut 1.A wheel tooth 560 can be set on the joining portion, yet, two or more wheel teeth 560 need be set.

According to second specific embodiment of the present invention with above structure and improvement specific embodiment, when using spanner 500, the user holds handle 510, hook or mesh jut on the external peripheral surface that is arranged on locking nut 1 or the protuberance 550 and 560 on the gear teeth 1a, and rotational lock nut 1.

Then, the very big strength of use is unclamped or is tightened locking nut 1, and when household electric appliance being installed on this leg assembly, perhaps when adjusting the height of this leg bolt, the workman just can operate expediently like this.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Commercial Application

As mentioned above, according to first specific embodiment of the present invention or improved implementation Example provides a kind of locking nut that improves structure that has, so that the workman utilizes instrument or hand Refer to easily unclamp or tighten this locking nut.

In second specific embodiment of the present invention and improved specific embodiment, provide one Plant the spanner with improvement structure, so that the workman rises to the bait at the external peripheral surface of this locking nut Live or the engaging lock jack panel after unclamp or tighten this locking nut.

Therefore, by using according to this locking nut of the present invention and spanner, the workman can be non-Chang Rongyi and leg assembly is installed easily or is adjusted the height of this leg assembly. Thereby, When leg assembly being installed or adjusting its height, reduced be used for the assembling household electrical appliance the time Between, improve productivity ratio, and improved operating efficiency.

Claims

1. locking nut that is used for the household electric appliance leg assembly comprises:

A plurality of ribs, described rib radially extends from the circumference of hub, and has the side, is used for rotating described hub around described leg bolt by described side instrument or finger; And

Auxiliary part, be configured to allow spanner or finger from described hub radially near described side, and close with described ribbed joint.

2. locking nut according to claim 1, wherein, the height of described rib is equal to or less than the height of described hub, and the height of described auxiliary part is lower than the height of described rib.

3. locking nut according to claim 1, wherein, described side is vertical with horizontal plane.

4. locking nut according to claim 1, wherein, described side tilts to the vertical line direction.

5. locking nut according to claim 1, wherein, at least one side in two sides of described rib becomes big from the direction of described hub to the end of described rib.

6. locking nut according to claim 1, wherein, when described instrument from described hub radially near the time, end and two sides of described rib are meshed with described instrument.

7. locking nut according to claim 1, wherein, described auxiliary part comprises the extended element from the circumferential extension of described hub to the space the described rib.

8. locking nut according to claim 7, wherein, described side tilts to the vertical line direction.

9. locking nut according to claim 8, wherein, first side in two sides of described rib tilts, so that from the top of described rib to described extended element thickening gradually, and its second side tilts, and it becomes thicker from the bottom of described rib to described extended element like this.

10. locking nut according to claim 7, wherein, described extended element extends from the middle part of the short transverse of described hub, and has the height that is lower than described rib.

11. locking nut according to claim 7, wherein, described extended element be tilt so that can easily touch described side from the radially approaching described instrument or the finger of described hub.

12. locking nut according to claim 7, wherein, described extended element be tilt so that its first end that engages with described hub is higher than its second end of the end of the described rib of adjacency.

13. locking nut according to claim 12, wherein, the true dip direction that is positioned at two extension parts on two sides of described rib differs from one another.

14. locking nut according to claim 7 wherein, is arranged to the end of described extension part adjacent with the bottom or the top of the end of described rib, the single area that exposes at the end of described side and described rib adjacent portion becomes bigger like this.

15. locking nut according to claim 7, wherein, the middle part of the end of described extended element is to described hub bending.

16. locking nut according to claim 7, wherein, the end of described rib forms the corner of described locking nut.

17. locking nut according to claim 7, wherein, the end of described rib is circular.

18. locking nut according to claim 1, wherein, described auxiliary part comprises the wheel rim of the end that is used to engage described rib.

19. locking nut according to claim 18, wherein, described wheel rim be lower than described rib and with the top or the lower bond of described rib.

20. locking nut according to claim 18 wherein, is configured to described wheel rim vertical with horizontal plane.

21. locking nut according to claim 18 wherein, is arranged in of two wheel rims on two sides of described rib end and engages with the top of described rib, and another wheel rim engages with its underpart.

22. a locking nut that is used for the household electric appliance leg assembly comprises:

Hub has screw, and leg bolt is passed described screw, and described leg bolt engages with household electric appliance;

A plurality of ribs radially extend from the circumference of described hub, and have the side, are hooked on the described side from the radially approaching instrument or the finger of described hub, so that rotate described hub around described leg bolt.

23. locking nut according to claim 1, wherein, described side is perpendicular to horizontal plane.

24. locking nut according to claim 1, wherein, described side tilts to described vertical surface direction.

25. locking nut according to claim 24, wherein, first side in two sides of described rib be tilt so that become thicker to described first side of described extended element from the top of described rib, and its second side be tilt so that become thicker to described second side of described extended element from the bottom of described rib.

26. locking nut according to claim 22, wherein, described extended element be tilt so that its first end that engages with described hub is higher than its second end adjacent with the end of described rib.

27. locking nut according to claim 26, wherein, the true dip direction that is arranged on two extended elements on two sides of described rib differs from one another.

28. locking nut according to claim 22, wherein, described wheel rim extends vertically up to the top or the bottom of described rib from the end of described extended element.

29. locking nut according to claim 22 wherein, is arranged in of two wheel rims on two sides of end of described rib and engages with the top of described rib, and another wheel rim engages with its underpart.

30. locking nut according to claim 22, wherein, the joining portion of described rib, described extended element and described wheel rim is circular.

31. a spanner comprises:

Long handle has at least one protuberance at its external peripheral surface; And box-shaped end or opening end, be arranged on the arbitrary end in two end.

32. spanner according to claim 31, wherein, described protuberance is set on the joining portion of described handle and described box-shaped end, perhaps is arranged on the joining portion of described handle and described opening end.

33. spanner according to claim 32, wherein, described joining portion is crooked.

34. spanner according to claim 31, wherein, described protuberance is the hook that is hooked on the jut of described external peripheral surface.

35. spanner according to claim 31, wherein, the wheel tooth of described protuberance for being meshed with external peripheral surface with released nut.