CN102380839A

CN102380839A - Dustproof structure of ratchet spanner

Info

Publication number: CN102380839A
Application number: CN2010102749219A
Authority: CN
Inventors: 胡厚飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-09-06
Filing date: 2010-09-06
Publication date: 2012-03-21
Anticipated expiration: 2030-09-06
Also published as: CN102380839B

Abstract

The invention relates to a dustproof structure of a ratchet spanner. The ratchet spanner is provided with a head part, a rod body, a holding part and a drive member and is characterized in that: the drive member is provided with a step surface between a clamping end and an annular groove, wherein an annular edge is formed on the outer ring of the step surface in a transverse extruding way, the annular edge is step-shaped, and the larger circle diameter of the annular edge is larger than the maximum outer diameter of the drive member; the groove is internally provided with a second clamping groove; a dustproof cover is sleeved in the groove; and the dustproof cover closely covers an opening formed on a second end surface between the groove and the annular edge of the step surface, is buckled into the step-shaped annular edge and is positioned in the second clamping groove of the groove so as to wrap a C-shaped fastener in the groove space, and the purpose of preventing dust from entering a combination position between a pore chamber and the drive member from the groove is achieved.

Description

The dustproof construction of ratchet spanner

Technical field

The present invention is a kind of dustproof construction of ratchet spanner, refers to a kind of dust cap that is arranged in the head of ratchet spanner and the groove that actuator one side is offered especially, reaches to prevent that the dirt bits are from the outer dustproof construction that gets into the ratchet spanner between head and actuator.

Background technology

Please with reference to the A-A ' cutaway view of the ratchet spanner structure shown in Figure 1A, the 1B; Existing ratchet spanner 10 has a head 12, a body of rod 11, a grip part 14 and an actuator 2; Wherein this head 12 has the first end face F1 and the second end face F2; At least offer the pore chamber 121 of perforation first an end face F1 and the second end face F2 on this head 12, on the second end face F2 of pore chamber 121 1 sides, offer a groove 13, wherein this pore chamber 121 is arranged at wherein for supplying this actuator 2; These pore chamber 121 upper ends are the smaller opening in a circle footpath and form a Restricted edge 122; This pore chamber 121 offers one first tank 124 and second tank 125 in head 12 towards the interior circle of the body of rod 11 directions successively, and wherein second tank 125 is penetrated with a perforate on the first end face F1, and this first tank 124 then is opened in head 12 inner spaces of 125 of this pore chamber 121 and second tanks; And 13 of first tank 124 and grooves are formed with a district at a distance from face 123; This pore chamber 121 inner round wall one appropriate position offers an annular groove 126, this annular groove 126 for ring-type offer to the groove face conducting of this groove 13, and position height is identical; In the structure of existing ratchet spanner 10, this actuator 2 has a driving body 21, a moving bar 20, a ratchet piece 22 of at least one and a toggle 15; These driving body 21 lower ends are a fastening end 211, and driving body 21 upper ends are a circle than the great circle footpath, offer a tooth portion 213 on its outer shroud; The big circle in this upper end forms class's face 212 with 211 junctions, fastening end, below, and offers one first draw-in groove 214 in the ring of 213 in this class's face 212 and tooth portion on directly, and the position of this first draw-in groove 214 and aforementioned recess 13 groove faces and this annular groove 126 are relative position; These driving body 21 centers offer one and run through the perforation 2151 of integral body and the structure of sheathed groove 2152, provide this moving bar 20 to be provided with wherein, and wherein this driving body 21 is for being sheathed in this pore chamber 121; And it is spacing to make tooth portion 213 apical margins be resisted against these Restricted edge 122 belows, and first tank 124 that the position of this tooth portion 213 and pore chamber 121 1 sides are offered is relative, wherein is arranged with at least one ratchet piece 22 in this first tank 124; This ratchet piece 22 is also distinguished at a distance from face 123 and is supported, and this ratchet piece 22 has a ratchet part 221 and a clicking section 222, and this ratchet part 221 can be done the meshing of special angle with aforesaid tooth portion 213; Carry out unidirectional reversing so as to this driving body 21 of moving; This clicking section 222 is for having a radian, and on second tank 125 from be arranged with a toggle 15, this toggle 15 is for being rotating in this second tank 125; It is provided with one a group of handle 151 and a struck side 152; Wherein this group handle 151 stir with hand to receive the operator, and this struck side 152 is for being resisted against on the aforementioned clicking section 222 for to be arranged at outside the first end face F1 of head 12; Make it when receiving to dial 151 groups of commentaries on classics of handle; It can push against and the displacement of special angle is carried out in clicking section 222, drives this ratchet part 221 and carries out the meshing of ad-hoc location, 126 sheathed C shape fasteners 24 of this first draw-in groove 214 and groove opposite 13 groove faces thereof and annular groove with tooth portion 213; These C shape fastener 24 opposing ends can be bent into the clamping part 241 of an overhead kick shape usually relatively; This C shape fastener 24 can be with rotating in this pore chamber 121 of driving body 21 location, and this fastening end 211 is to protrude in the second end face F2 opening part from pore chamber 121, and the clamping part 241 of these C shape fastener 24 relative two overhead kick shapes is also inserted in these groove 13 spaces; Make opening that the operator can see through this groove 13 with this clamping part 241 of nipper plier clamping; Break away from 126 of these first draw-in grooves 214 and groove opposite 13 groove faces thereof and annular grooves so as to discharging this C shape fastener 24, reach driving body 21 can be broken away from take out in the pore chamber 121 and keep in repair, and these moving bar 20 bottoms have the less moving end 201 in bar footpath; Again in the sheathed spring 202 of these moving end 201 outer shrouds; Whole moving bar 20 and moving end 201 be in embedding these spring 202 backs for being arranged in aforesaid perforation 2151 and the sheathed groove 2152, so as to discharging the inner sheathed spheroid 23 in fastening end 211, sees through this spheroid 23 and can engage with work package (sleeve etc.) and execute work after locating.

Again please with reference to sketch map shown in Figure 2; Groove 13 designs that wherein existing ratchet spanner 10 is offered in the second end face F2; Though having, it provide these C shape fastener 24 terminal clamping parts 241 to be arranged at wherein; And can provide nipper plier to carry out clamping and discharge the design that this C shape fastener 24 breaks away from 126 of these first draw-in grooves 214 and groove opposite 13 groove faces thereof and annular grooves, yet exposed groove 13 but can make and but can start from this groove 13 positions and pile up dirt bits after these ratchet spanner 10 long-term uses; These dirt bits D can enter into this pore chamber 121 inner spaces as the path that icon showed; Can make 221 of tooth portion 213 and this ratchet parts of driving body 21 especially, can produce abnormal wearing and tearing after long high torsion uses, cause collapsing the serious consequence of tooth or slippage; Therefore existing ratchet spanner 10 needs special dustproof design in groove 13 positions, and the shortcoming that just can avoid the dirt bits to quicken to damage produces.

U.S. Patent number US5 for another example; 533; 427 (denomination of invention is: shown in patent of invention specification RATCHET WRENCH HAVINGRATCHET TEETH OF HIGHER STRENGTH); This patent specification accompanying drawing 1 (diagram Fig 1) discloses the design that a stator 66 (retaining plate 66) arranged; But take a broad view of the explanation in this explanation; This stator 66 (retaining plate 66) is for being arranged at the bottom surface of its ratchet piece 50 (pawl 50); This stator 66 (retaining plate 66) below wears the ear 45 (ear 45) of a locating ring 44 (clamping ring 44) and this locating ring 44 (clamping ring 44) side protrusion again, and the district of approximate above-mentioned existing ratchet spanner 10 has the design of supporting ratchet piece 22, the pressure when so the design of this kind stator 66 (retaining plate 66) must be born ratchet piece 50 (pawl 50) spine move at a distance from face 123 in this stator 66 (retai ning plate 66) design; Therefore being necessary for the metal is material; Can't be coated on again outside the locating ring 44 (clamping ring 44), so dirt bits still can be piled up in outside the locating ring 44 (clamping ring 44), at driving body 40 (ratchet wheel 40) constantly in the rotation process; The dirt bits still can not have enough dustproof effects from getting between driving body 40 (ratchet wheel 40) and ratchet piece 50 (pawl 50) between the slit of ear 45 (ear 45).

Summary of the invention

The purpose of this invention is to provide a kind of dirt bits that can prevent from the outer dustproof construction that gets into the ratchet spanner between head and actuator.

In order to reach above-mentioned enforcement purpose; The present invention proposes a kind of dustproof construction of ratchet spanner; This ratchet spanner has a head, a body of rod, a grip part and an actuator, and wherein this head has first end face and second end face, offers one on this head at least and connects the pore chamber of first end face and second end face and on second end face of pore chamber one side, offer a groove; This pore chamber is for supplying the setting of this actuator; Offer an annular groove on this pore chamber inner round wall, this actuator has a driving body, at least one a ratchet piece and a toggle at least, has a tooth portion, a fastening end and one first draw-in groove on this driving body at least; And after in this actuator is installed in this pore chamber; This fastening end is to protrude in the second end face opening part from pore chamber, and the part of this at least one ratchet piece is that meshing this driving body of moving of in the tooth portion of this driving body, using carries out unidirectional reversing, and this first draw-in groove then is opened on the ring footpath between fastening end and tooth portion; And when driving body is inserted pore chamber with respect to the inboard of this annular groove position; And and this annular groove between be arranged with a C shape fastener use the location driving body in this pore chamber, tail end tool one clamping part that this C shape fastener is relative is also inserted in this recess space, the principal character of the dustproof construction of this ratchet spanner is: this driving body has class's face between fastening end and annular groove; The outer shroud of this class's face laterally protrusion is formed with one step-like and than the ring limit of great circle footpath greater than the driving body maximum outside diameter; Offer one second draw-in groove in this groove, be arranged with a dust cap in this groove, this dust cap between the ring limit that closely is covered in this groove and class's face on the formed opening of second end face; And buckle into location in second draw-in groove of aforementioned step-like ring limit and this groove, in recess space, go up and reach and prevent that the dirt bits from being got in this pore chamber and the actuator binding site by this groove to coat this C shape fastener.

This dust cap of the dustproof construction of this ratchet spanner has at least one slot to make way and is covered on the clamping part of this C shape fastener; The groove depth of the slot to make way of this dust cap is greater than the thickness of C shape fastener; This dust cap has the one first round edge C1 and the second round edge C2; Wherein the first round edge C1 is the arc limit that fits in this groove one side; The second round edge C2 then fits in the outer shroud ring limit of this driving body; Convex with a projection on the first round edge C1 of this dust cap, this projection is spacing for embedding in this second draw-in groove space when this dust cap is sheathed on this groove, locatees in the ring limit that the second round edge C2 of this dust cap is convexly equipped with for the class's face outer shroud that embeds this driving body when this dust cap is sheathed on this groove.

Description of drawings

Figure 1A is the structural representation of looking up of existing ratchet spanner;

Figure 1B is the cross-sectional side sketch map of existing ratchet spanner;

Fig. 2 is the assembling side cross-sectional schematic that amplify the part of existing ratchet spanner structure;

Fig. 3 A is the structural representation of looking up of the present invention;

Fig. 3 B is a cross-sectional side sketch map of the present invention;

Fig. 4 for of the present invention local amplify analyse and observe the action sketch map;

Fig. 5 is a perspective exploded view of the present invention;

Fig. 6 A is the perspective view of dust cap of the present invention;

Fig. 6 B is the other direction perspective view of dust cap of the present invention;

Fig. 7 is another perspective exploded view of the present invention;

Fig. 8 is a perspective exploded view more of the present invention;

Fig. 9 is the partial structurtes cross-sectional schematic of another embodiment of the present invention.

Description of reference numerals:

10 ratchet spanneres

11 bodies of rod

12 heads, 121 pore chambers

122 Restricted edge, 123 districts are at a distance from face

124 first tanks, 125 second tanks

126 annular grooves

13 grooves, 131 second draw-in grooves

14 grip parts

151 groups of handles of 15 toggles

152 struck sides

2 actuators

20 moving bars, 201 moving ends

202 springs

21 driving bodies, 211 fastening ends

212 class's faces, 2121 ring limits

213 tooth portions, 214 first draw-in grooves

2151 perforation, 2152 sheathed grooves

22 ratchet pieces, 221 ratchet parts

222 clicking sections

23 spheroids

24 C shape fasteners, 241 clamping parts

30 dust caps, 301 projections

302 slots to make way

The C1 first round edge C2 second round edge

D dirt bits

The F1 first end face F2 second end face

The specific embodiment

To understand in order technical characterictic of the present invention, purpose and effect being had more clearly, to contrast the description of drawings specific embodiment of the present invention at present.

See also structural representation, A-A ' cutaway view and the partial enlarged drawing of Fig. 3 A, 3B and preferred embodiment of the present invention shown in Figure 4; The dustproof construction of ratchet spanner of the present invention is mainly the design of deriving based on aforementioned existing ratchet spanner 10; Therefore possess equally a head 12 arranged, a body of rod 11, a grip part 14 and an actuator 2 and affiliated localized design thereof; Wherein the invention is characterized in this driving body 21 this class's face 212 outer shroud laterally protrusion be formed with one step-like and than the ring limit 2121 of great circle footpath greater than driving body 21 maximum outside diameters; The position that this ring limit 2121 inner edges form in preferred embodiment of the present invention is to be covered in the second end face F2 outside and not interlock with the cell body space of groove 13; And offer the buckle space of one second draw-in groove 131 in this groove 13; This second draw-in groove 131 goes out the space of dark radian for seeing through milling cutter processing from these groove 13 inside in the extension milling in preferred embodiment of the present invention.And be arranged with a dust cap 30 in this groove 13; This dust cap 30 is in second draw-in groove that closely covers and buckle into aforementioned step-like ring limit and this groove; Be positioned 2121 on the ring limit of this groove 13 and this class's face 212; And on the formed opening of the second end face F2, prevent that so as to reaching the dirt bits from being got in this pore chamber 121 and actuator 21 binding sites by this groove 13, wherein this dust cap 30 has the one first round edge C1 and the second round edge C2; Wherein the first round edge C1 is the arc limit that fits in these groove 13 1 sides, and the second round edge C2 then fits in the outer shroud ring limit of this driving body 21.

Please merge each angle perspective view again with reference to Fig. 5, Fig. 6 A, Fig. 6 B, Fig. 7 and preferred embodiment of the present invention shown in Figure 8; Offer the slot to make way 302 of at least one on this dust cap 30; This slot to make way 302 is gone in this groove 13 back for to be covered on the clamping part 241 of this C shape fastener 24 in sheathed; And the groove depth of this slot to make way 302 is greater than the thickness of C shape fastener 24; Avoid when making this dust cap 30 sheathed producing and interfere each other and can increase dust cap 30 thickness again with clamping part 241; Also can be the clamp structure design of other Type C shape fastener for described clamping part 241; Wherein convex with a projection 301 on the first round edge C1 of this dust cap 30, this projection 301 is spacing for embedding in these second draw-in groove, 131 spaces when this dust cap 30 is sheathed on this groove 13, location in the ring limit 2121 that the second round edge C2 of this dust cap 30 is convexly equipped with for these class's face 212 outer shrouds of embedding when this dust cap 30 is sheathed on this groove 13; After the group of this dust cap 30 is made as and embeds projection 301 in these second draw-in groove, 131 spaces earlier in this preferred embodiment; Push at the second round edge C2 subsequently and be forced into fastening location in the ring limit 2121, can be denial in the dirt bits entering on the opening outside the groove 13, therefore can protect this C shape fastener 24 and inner other structure simultaneously through fastening the dust cap 30 that gets into this dust cap 30; Because this dust cap 30 can be by the plastics ejection formation; Manufacture process is convenient quick and with low cost, only needs when therefore keeping in repair this dust cap 30 is dug out outside this groove 13, and the dust cap 30 of plastics ejaculation can have better elasticity again; Be fastened between this groove 13 and driving body 21 ring limits to have more after on the formed opening of the second end face F2 and paste effect, the effect that dustproof bits are got into is better.

See also the structure assembling view of another embodiment of the present invention shown in Figure 9 again; Aforementioned relevant structural design features of the present invention also can be applicable on another embodiment; The pore chamber 121 of this head 12 does not run through the first end face F1 in this embodiment; Is to be arranged at design aforesaid perforation 2151 and sheathed groove 2152 in moving end 201 in embedding these spring 202 backs and also do not have moving bar 20 in this driving body 21; Aforesaid this dust cap 30 is arranged in second draw-in groove that closely covers and buckle into aforementioned step-like ring limit and this groove but possess equally; Be positioned 2121 on the ring limit of this groove 13 and this class's face 212, characteristic and dependency relation thereof on the formed opening of the second end face F2.

In sum; The dustproof construction of ratchet spanner of the present invention sees through second draw-in groove of dust cap and groove and the design on ring limit; Reach better dustproof effect, patent that the usability of tool industry, and nothing deeply is approximate or identical or technology are open formerly; Real novelty and the progressive important document that has met standard on the Patent Law proposes application for a patent for invention at present in accordance with the law.

The above is merely the schematic specific embodiment of the present invention, is not in order to limit scope of the present invention.Any those skilled in the art, equivalent variations of under the prerequisite that does not break away from design of the present invention and principle, having done and modification all should belong to the scope that the present invention protects.

Claims

1. the dustproof construction of a ratchet spanner, this ratchet spanner has a head, a body of rod, a grip part and an actuator, and wherein this head has first end face and second end face; At least offer one on this head and connect the pore chamber of second end face, and on second end face of this pore chamber one side, offer a groove, this pore chamber is for supplying the setting of this actuator; Offer an annular groove on this pore chamber inner round wall; This actuator has a driving body, at least one a ratchet piece and a toggle at least, has a tooth portion, a fastening end and one first draw-in groove on this driving body at least, and after in this actuator is installed in this pore chamber; This fastening end is to protrude in the second end face opening part from pore chamber; The part of this at least one ratchet piece is meshing in the tooth portion of this driving body, carries out unidirectional reversing so as to this driving body of moving, and this draw-in groove then is opened on the ring footpath between fastening end and tooth portion; And when driving body is inserted pore chamber with respect to the inboard of this annular groove position; And and this annular groove between be arranged with a C shape fastener, so as to the location driving body in this pore chamber, tail end tool one clamping part that this C shape fastener is relative is also inserted in this recess space; It is characterized in that: this driving body has class's face between fastening end and annular groove; The outer shroud of this class's face laterally protrusion is formed with step-like and its circle footpath greater than the ring limit of driving body maximum outside diameter, is arranged with a dust cap in this groove, this dust cap between the ring limit that closely is covered in this groove and class's face on the formed opening of second end face; And buckle in the said step-like ring limit location, in recess space, go up and reach and prevent that the dirt bits from being got in this pore chamber and the actuator binding site by this groove to coat this C shape fastener.

2. the dustproof construction of ratchet spanner as claimed in claim 1 is characterized in that: offer one second draw-in groove in this groove.

3. the dustproof construction of ratchet spanner as claimed in claim 2 is characterized in that: this dust cap is to buckle into location in second draw-in groove of this groove.

4. the dustproof construction of ratchet spanner as claimed in claim 2, it is characterized in that: this dust cap has at least one slot to make way and is covered on the clamping part of this C shape fastener.

5. the dustproof construction of ratchet spanner as claimed in claim 4, it is characterized in that: the groove depth of the slot to make way of this dust cap is greater than the thickness of C shape fastener.

6. the dustproof construction of ratchet spanner as claimed in claim 4, it is characterized in that: this dust cap has one first round edge and second round edge, and wherein first round edge is the arc limit that fits in this groove one side, and second round edge then fits in the outer shroud ring limit of this driving body.

7. the dustproof construction of ratchet spanner as claimed in claim 6 is characterized in that: convex with a projection on the first round edge C1 of this dust cap, when this projection is sheathed on this groove in this dust cap, embed in this second draw-in groove space spacing.

8. the dustproof construction of ratchet spanner as claimed in claim 6 is characterized in that: when this dust cap is sheathed on this groove, locate in the ring limit that class's face outer shroud of this driving body of second round edge of this dust cap embedding is convexly equipped with.