CN2492362Y - Tool-free regulating structure of chain saw - Google Patents

Abstract

The utility model relates to a no-tool adjust structure of a chain saw, which comprises an adjust portion, a driving portion and a holder, wherein the driving portion further comprises a guidance plate, an anchor plate and an immobilizing disk, the guidance plate is combined on a flatform arranged on the holder, a chain saw can be combined around the circumference of the guidance plate and a part of the chain saw is winded on a carrier wheel arranged next to the flatform, the guidance plate is fixedly provided with the anchor plate which is protuberantly provided with a plurality of lugs, the immobilizing disk is provided with a plurality of spiral rails and a fluted disc and the fluted disc meshes with a gear arranged on the driving plate, the driving plate is combined with a knob, when the driving plate is synchronously driven to rotate through forward or reverse rotating knobs, the anchor plate is driven by the spiral rail of the immobilizing disk, so that the guidance plate can linearly move forward and backward relative to the flatform, thereby the stretching force of the chain saw can be adjusted and the chain saw can be relaxed to unload conveniently or loaded and adjusted tightly.

Description

The instrument of exempting from of chain saw is adjusted structure

Technical field

The utility model relates to a kind of instrument of exempting from of chain saw and adjusts structure, it is lax or nervous to be meant that especially it just can adjust chain saw by the mode of rotation knob, and then reach the structure of adjusting chain saw tension force under the condition that does not need tool using, also therefore improve convenience and the operating efficiency of using operation.

Background technology

The instrument of exempting from of conventional chain saw is adjusted structure, chain saw as United States Patent (USP) the 5491889th case of Fig. 5 number is adjusted structure (Tensioning Arrangement For A Saw Chain), and it includes an adjustment dish A, a dust cap B, it includes a hole B2, a projection B3; One stopper dish C, it includes a centre bore C1, a guide slit C2; One drives sheet E, and it is a U type structure, and it includes a plurality of teat E1, E2; One fairlead F, it is provided with a plurality of hole F2 and an opening F3; One holder G, it is provided with a screw rod G2 and a guiding protruded stigma G3; The mode that each interelement makes up mutually, shown in Fig. 5, the teat E1 of this drive sheet E is meshed with the guide slit C2 of this stopper dish C, A drives stopper dish C rotation and makes stopper dish C and this drive sheet E produce relative motion via rotation adjustment dish, therefore can drive this fairlead F and move to the left or to the right, make that the tension force of chain saw is adjusted.

Yet, this stopper dish C only is meshed with guide slit C2 by teat E1 between the two with this drive sheet E, it causes less stable because active force almost concentrates on contact point, and wearing and tearing destroy owing to the stress concentration phenomenon causes easily, therefore, the utility model is improved based on the existing shortcoming of aforementioned known chain saw adjustment structure.

Summary of the invention

The purpose of this utility model is to propose a kind of instrument of exempting from of the chain saw of being made up of holder, drive division and adjustment part and adjusts structure, because it is lax or nervous that it can just can adjust chain saw by the mode of rotation knob, adjust chain saw tension force under the condition that does not need tool using and can reach, therefore improve convenience and the operating efficiency used, thereby solved the existing in prior technology problem.

The technical scheme that the utility model adopted is that it includes:

One holder, it further includes a sprocket wheel, a screw rod and a guiding block;

One drive division, it further includes a fairlead, and drives sheet, a stopper dish and a fluted disc, this fairlead is provided with an opening, this drive sheet is to be located at regularly on this fairlead, and on this drive sheet, be provided with several lugs, be provided with several spiral rail bars below this stopper dish, and stopper dish top is provided with described fluted disc regularly, be the guiding block that the opening of fairlead is combined in described holder, and one of them spiral rail bar of stopper dish is inserted between described two lugs;

One adjustment part, it further includes a dust cap, a driving-disc and a knob, be provided with several tooth portions below this driving-disc, be provided with nut below the described knob, this knob and driving-disc are to be combined in described dust cap, and make the outstanding set perforation of dust cap of tooth portion below the driving-disc, make this tooth portion be engaged in described fluted disc, also make described screw rod lock the nut of knob below;

Can control described driving-disc by rotation during knob and whether be locked, when driving-disc when rotated, drive the stopper disc spins synchronously, and then make spiral rail bar rotating band moving plate, make fairlead move along described guiding block.

Characteristics of the present utility model are: the conventional chain saw of improvement is adjusted structure and is become: drive driving-disc via the knob of rotation adjustment part and rotate synchronously, because the contact-making surface of the stopper dish of driving-disc and drive division has intermeshing several tooth portions respectively, drive upper surface via the spiral track bar of stopper dish lower surface again and have the drive sheet of lug, so make by the guiding block restriction of holder can only moving linearly the fairlead action and adjust the tension force of chain saw.Wherein, the strength transmission between stopper dish and drive sheet is the face way of contact with aforesaid spiral rail bar and lug, therefore improves the stability and the wear-out failure of contact-making surface.

Description of drawings

Fig. 1 is for showing the three-dimensional exploded view of each element syntagmatic of the utility model;

Fig. 2 is for showing the section plan of the utility model combining structure;

Fig. 3 is for showing the local top view of adjustment part of the present utility model;

Fig. 4-1 shows the serial planar gesture figure when drive division of the present utility model moves to Fig. 4-the 3rd;

Fig. 5 is the stereogram exploded view that shows the instrument of the exempting from adjustment structure of conventional key saw.

The specific embodiment

Further specify preferred embodiment of the present utility model in conjunction with above-mentioned each accompanying drawing now.Consult Fig. 1 to shown in Figure 3, the instrument of exempting from of chain saw provided by the utility model is adjusted structure, and it includes an adjustment part 1, a drive division 2 and a holder 3; Adjustment part 1 wherein further includes a dust cap 15, a driving-disc 14 and a knob 11; Described dust cap 15 is provided with a recess 150, and the bottom surface of recess 150 then is provided with a perforation 152, and the internal perisporium of recess 150 is provided with the trip 151 of several fluking types.Described driving-disc 14 central authorities have a centre bore 140, and are provided with annular several tooth portions 141 that are arranged in below driving-disc 14.The following central authorities of knob 11 are provided with a polygonal holes 12; Set in addition polygonal pedestal 13 end shapes are the shapes corresponding to this polygonal holes 12, and the central authorities at this pedestal 13 are provided with a polygonal through hole 130, a pair of nut 142 that should through hole 130 shapes can be put into wherein to avoid nut 142 to rotate with respect to pedestal 13, and then pedestal 13 is inserted in the polygonal holes 12, to avoid rotation relatively between pedestal 13 and the knob 11; Knob 11 is in the dented space that is positioned over above the driving-disc 14, pass the through hole 130 of pedestal 13 with screw 131 again and lock knob 11 following set screw (not shown), so that knob 11 and driving-disc 14 are combined, but can relatively rotate between knob 11 and the driving-disc 14, and pedestal 13 also is incorporated into driving-disc 14; To make up driving-disc 14 behind knob 11 and the pedestal 13 at last and put into the recess 150 of dust cap 15, and a little driving-disc 14 is bestowed pressure and made the flange 143 that is located at driving-disc 14 neighborings be embedded in trip 151 belows, driving-disc 14 can be rotated in recess 150, but can prevent that driving-disc 14 breaks away from from recess 150.

Described drive division 2 further includes a stopper dish 21, a fluted disc 22, drives a sheet 23 and a fairlead 24; Stopper dish 21 wherein is the disk body of a circle, is equipped with the spiral rail bar 211 more than two below this stopper dish 21; Fluted disc 22 is located at above the stopper dish 21 regularly, the mode that it is fixing, at embodiment of the present utility model is to adopt the technology of punch process with the fluted disc 22 and the relatively local punching press of stopper dish 21 that stack together, allows the material mutual extrusion of two set of pieces be out of shape and chimeric being fixed together.Described drive sheet 23 also is a plate body, be provided with a microscler slotted eye 231 at this drive sheet 23, at least two holes 233, and be arranged in several lugs 232 that drive above the sheet 23, and the width of said spiral rail bar 211 no better than of the width between the adjacent lug 233, allow the spiral rail bar 211 can be by between two lugs 233.Described fairlead 24 is to be used for the microscler chip component of combination chain strap saw 25, periphery at this fairlead 24 is provided with the chase (not shown), provide chain saw 25 set a plurality of tabs and cooperate wherein, allow chain saw 25 rotate along the ring Zhou Xunhuan of fairlead 24; One end of this fairlead 24 is to be provided with a long shaped aperture 241, and is provided with hole 242 on the fairlead 24 of opening 241 both sides; Driving the combination of sheet 23 and fairlead 24, is to give rivet clasp or locking again after utilizing retaining element 243 such as rivet or screw to pass fairlead 24 and the hole 242,232 that drives sheet 23 in regular turn, allows drive sheet 23 and be combined as a whole with fairlead 24.

Described holder 3 is pedestals that are combined in the chain saw casing ontology, is provided with a platform 31 on this holder 3, flat contain 31 and is provided with the guiding block 33 and a screw rod 32 of shape always; On holder 3, then be provided with a sprocket wheel 34 near platform 31, the shape of this sprocket wheel 34 is can be for described chain saw 25 on it, and the central shaft of this sprocket wheel 34 is connected in the transmission mechanism that is located in the chain saw body, make when sprocket wheel 34 is driven in rotation, can drive chain saw 25 and rotate circularly along fairlead 24.

The compound mode of described drive division 2 and holder 3, be that opening 241 is sleeved on guiding block 33 on the platform 31, make screw rod 32 pass the opening 241 and the slotted eye 231 that drives sheet 23 of fairlead 24 simultaneously, and behind the centre bore of stopper dish 21 and fluted disc 22, pass again pedestal 13 through hole 130 and corresponding to nut 142, rotate knob 11 then, make nut 142 be locked together in screw rod 32.

When knob 11 was locked fully, driving-disc 14 was also locked simultaneously and can't be rotated, and therefore when the user need adjust the tensity of chain saw 25, at first must earlier knob 11 be unscrewed, and could rotate driving-disc 14 then; When driving-disc 14 is rotated, its tooth portion 141 is owing to the tooth with fluted disc 22 meshes, thereby can drive synchronously 21 rotations of stopper dish, be located at the lug 232 that 211 of the spiral rail bars of stopper dish 21 can rotating band moving plate 23, and then drive fairlead 24 and advance or move with retreating along guiding block 33.

When Fig. 4-1 figure has shown stopper dish 21 rotation, the lug 232 of its spiral rail bar 211 rotating band moving plates 23, and then make and drive sheet 23 that this moment can be with the chain saw stretching toward the mobile state of the left directions direction of sprocket wheel (promptly towards).

Fig. 4-2 has shown that will drive sheet 23 is adjusted into the state that direction to the right moves.

Fig. 4-3 has shown that further will drive sheet 23 again is adjusted into the state that direction to the right moves, and can loosen chain saw this moment.

Above-described only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; so; all have following of identical creation spirit do relevant any modification of the present utility model or change, all must be included in the category of the utility model protection.

Claims (3)

1. the instrument of exempting from of a chain saw is adjusted structure, it is characterized in that it includes:

One holder, it further includes a sprocket wheel, a screw rod and a guiding block;

One drive division, it further includes a fairlead, and drives sheet, a stopper dish and a fluted disc, this fairlead is provided with an opening, this drive sheet is to be located at regularly on this fairlead, and on this drive sheet, be provided with several lugs, be provided with several spiral rail bars below this stopper dish, and stopper dish top is provided with described fluted disc regularly, the opening of fairlead is combined in the guiding block of described holder, and one of them spiral rail bar of stopper dish is inserted between described two lugs;

One adjustment part, it further includes a dust cap, a driving-disc and a knob, be provided with several tooth portions below this driving-disc, be provided with nut below the described knob, this knob and driving-disc are to be combined in described dust cap, and make the outstanding set perforation of dust cap of tooth portion below the driving-disc, make this tooth portion be engaged in described fluted disc, also make described screw rod lock the nut of knob below.

2. adjust structure by the instrument of exempting from of the described chain saw of claim 1, it is characterized in that described adjustment part, its dust cap is provided with a recess, the bottom surface of recess then is provided with a perforation, the internal perisporium of recess is provided with several trips, and described driving-disc is provided with several tooth portions below it, driving-disc is put into the recess of dust cap, and the flange of driving-disc is embedded in described trip below.

3. adjust structure by the instrument of exempting from of claim 1 or 2 described chain saws, it is characterized in that described driving-disc, its top is provided with a dented space, and knob is combined in this dented space.

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