CN2659640Y - Ratchet arrangement having high torque structure - Google Patents

Abstract

The utility model provides a ratchet wheel device with high torque structure. A head is arranged at the end of a body. A connected holding space and a ratchet block groove are arranged at the head. A Tool head and a ratchet block with a corresponding ratchet tooth in the holding space and a ratchet block channel. The ratchet block gears and clamps the tool head to make the tool head clamped or rotate idly; a ratchet tooth is arranged on the external flange of the tool head, a ratchet tooth corresponding to the ratchet tooth of the tool head is arranged at the flange of the ratchet block. Both ends of the ratchet block stretches out in the form of an embedding section in an arc and cone contracting. The two embedding sections are arranged between the angle space between the tool head and the ratchet block channel. The clamping tool head at any direction of the ratchet block is geared with the ratchet tooth of corresponding gear surface and the tool head in the ratchet tooth of the embedding section and the side flange of the back surface of the embedding section is against the corresponding internal surface of the ratchet block channel. The tool head rotates more, and the angle space of embedding section of the ratchet block is more clamped. The positive driving performance is sound, and the cost is low, and the torque resistance of the ratchet wheel is improved to prevent the tension displacement, the gear jumping and the tooth broken. The utility model overcomes the poor positive driving performance, reduces the manufacturing cost and extends the service life.

Description

Ratchet device with high torsion structure

One, technical field

The utility model relates to hand tools, relates in particular to a kind of ratchet device with high torsion structure that improves ratchet device sour jujube piece torsion.

Two, background technology

Ratchet device is a kind of by the two-way clip tool heads of sour jujube piece, make it only have unidirectional clamping function, and has a reverse idle running effect, use on the various spanners and be widely used in, such as double offset ring spanner, box spanner etc., thereby solution needed constantly to take off spanner in the past engages the problem of rotating again again, utilizes the design of ratchet device, makes the operation of spanner more easy fast.Yet; though existing ratchet device is to utilize the sour jujube piece to replace sour jujube piece groove inner edge and tool heads ratchet simultaneously and produce relative twisting resistance; rotation with the restriction tool heads; but; its structural design all is only to utilize the part of sour jujube piece back of the body edge to contact with the dotted line of sour jujube piece groove inner edge; therefore; its most torsion is born by the engagement ratchet between sour jujube piece and tool heads; also therefore; when twisting resistance during less than the reaction force of tool heads; peppery with the ratchet face regular meeting of tool heads the gap of tension force displacement takes place and jumps tooth or collapse dental phenomenon; especially on small-sized ratchet spanner; because the tooth depth of its ratchet is to be directly proportional with the length of peppery and tool heads, adds inevitable design tolerance and foozle, the twisting resistance value of its real mesh tooth face is far below the value of desired design; drop on the ratchet of minority engagement when its load after; it is jumped tooth or collapses tooth because of loading with regard to normal, cause the phenomenon of positive motion difference, and service life is shorter.

Also therefore, the improvement of all kinds of ratchets is in recent years still focused on and is improved its twisting resistance, as Figure 1A, shown in the 1B, it announces " a kind of high torque spanner " novel patent case of No. 483365 for Taiwan, it mainly is formed with an accommodation space 12 at head 11 centers of wrench body 10, head 11 accommodation spaces 12 are provided with a darker storage tank 15 at contiguous wrench body 10 places, and can be provided with ratchet-gear wheel 20 settings of serial ratchet 21 in the accommodation space 12 for outer rim, and be provided with the ratchet piece 25 corresponding in the storage tank 15 with ratchet 26, and ratchet piece 25 can utilize the tops that are located in the wrench body 10 to pull structure 28 pushes against and with ratchet-gear wheel 20 engagements, wrench body 10 storage tanks 15 corresponding both sides are respectively equipped with two control pieces 18, for the direction of operation control ratchet piece 25 clip ratchet-gear wheels 20.

The structure of above-mentioned novel case, utilize cutting-in storage tank 15 design and increase the thickness of ratchet piece 25, but make the wall of a side contact of ratchet piece 25 at storage tank 15, like this, though can locally improve its twisting resistance value, but, because the two ends of ratchet piece 25 utilize control piece 18 to shore, make its two ends form planar ends, so, when the active force of ratchet-gear wheel 20 greater than agree with the flank of tooth shore power the time, gap (as shown in Figure 1) the ratchet piece 25 that promptly can be shifted between the flank of tooth can be pushed outwards moving, damages the phenomenon of control 18, even therefore can't move, especially more small-sized spanner is obvious more, so it still can't effectively overcome the antitorque hypodynamic problem of ratchet device.

We are understood that thus, existing ratchet device is because the problem in its design, cause its reason ratchet to bear most torsion, in case thereby cause ratchet on business poor or torsion is excessive and can't mesh fully the time, the phenomenon that the teeth displacement will take place even jump tooth or collapse tooth, so service life is also short; Moreover, higher during manufacturing in order to keep its twisting resistance that should have to required precision, increased the difficulty of processing and the raising of fraction defective like this, cause the raising of manufacturing cost.

So, this creator is according to the research and development of being engaged in related industry for many years and manufacturing experience, problem at above-mentioned existence is deeply inquired into, through long-term endeavour and test, finally success create the strong and good ratchet device of positive motion of a kind of twisting resistance with high torsion structure, increase the service life and reduce cost purpose thereby reach.

Three, utility model content

Main purpose of the present utility model is to overcome the above-mentioned shortcoming that existing product exists, and provide a kind of ratchet device with high torsion structure, by being provided with fitting portion at sour jujube piece two ends, the fitting portion both side edges is engagement tool head ratchet and the design of pasting to sour jujube piece groove inner face fully, effectively solve existing ratchet device twisting resistance little, easily take place the tension force displacement, jump tooth and collapse dental phenomenon, overcome the problem of positive motion difference, and then reduce manufacturing cost, and prolong its service life.

The purpose of this utility model is realized by following technical scheme.

The utlity model has the ratchet device of high torsion structure, comprise body; This body end is provided with a bigger head, and is provided with the accommodation space and the sour jujube piece groove of connection in the head, is respectively equipped with tool heads and the sour jujube piece with corresponding ratchet in accommodation space and the sour jujube piece groove, and engagement of sour jujube piece and clip tool heads, makes tool heads clip or idle running; It is characterized in that: described tool heads outer rim is provided with serial ratchet, sour jujube piece one lateral margin is provided with the ratchet corresponding with the tool heads ratchet, sour jujube piece two ends protrude out respectively and are provided with the fitting portion that a curved taper is brought together, this two fitting portion is arranged on tool heads and the folded angle space of inner face, sour jujube piece groove both sides fully, the sour jujube piece is to either side clip tool heads, complete and the tool heads ratchet flank engagement of its flank of tooth corresponding with the fitting portion ratchet, fitting portion back side lateral margin are pasted fully and are against the corresponding inner face of sour jujube piece groove; Tool heads is rotated more, and sour jujube piece fitting portion is clamped by the angle space more, thereby it is good to constitute a positive motion, and the low ratchet device with high torsion structure of cost.

Four, description of drawings

Figure 1A is existing ratchet device planar structure schematic diagram, is used to illustrate the relative annexation of its structure and each assembly thereof.

Figure 1B is the schematic diagram of position structure for amplifying shown in Figure 1A.

Fig. 2 is the utility model stereochemical structure decomposing schematic representation, is used to describe in detail the mutual alignment relation of the utility model structure and each assembly thereof.

Fig. 3 is the utility model ratchet device combining structure floor map.

Fig. 4 is the utility model ratchet device planar gesture schematic diagram.

Fig. 5 is another embodiment stereochemical structure decomposing schematic representation of the utility model.

Fig. 6 is another embodiment planar gesture schematic diagram of the utility model ratchet device.

Fig. 7 is the another embodiment stereochemical structure of a utility model decomposing schematic representation.

Fig. 8 is the another embodiment planar gesture of a utility model ratchet device schematic diagram.

Number in the figure explanation: 10 wrench body, 11 heads, 12 accommodation spaces, 15 storage tanks, 18 control pieces, 20 ratchet-gear wheels, 21 ratchets, 25 ratchet pieces, 26 ratchets, 28 push up the structure of pulling, 30 bodies, 31 heads, 32 accommodation spaces, 33 latch closure grooves, 34 sour jujube piece grooves, 35 allocating slots, 36C shape button, 37 containing holes, 40 tool heads, 41 ratchets, 45 sour jujube pieces, 450 fitting portions, 451 location edge clippings, 46 ratchets, 47 driving levers, 48 push up the structure of pulling, 50 bodies, 51 heads, 52 accommodation spaces, 53 latch closure grooves, 54 sour jujube piece grooves, 55 allocating slots, 56C shape button, 57 containing holes, 60 tool heads, 61 ratchets, 65 sour jujube pieces, 650 fitting portions, 651 location edge clippings, 66 ratchets, 67 driving levers, 68 push up the structure of pulling, 70 bodies, 71 heads, 72 accommodation spaces, 73 latch closure devices, 74 sour jujube piece grooves, 75 driving lever grooves, 76 containing holes, 77 location structures, 80 tool heads, 81 ratchets, 85 sour jujube pieces, 850 fitting portions, 85 1 location edge clippings, 86 ratchets, 90 poke rods, 95 push up the structure of pulling.

Five, the specific embodiment

The utility model be a kind of promote positive motion and can increase the service life have a high torsion structure ratchet device, consult Fig. 2, shown in Figure 3, the utility model is a main embodiment with the ratchet device that generally is used for spanner, this ratchet device mainly comprises: a body 30, its end is formed with a bigger head 31, and can be in the head 31 for being equipped with a tool heads 40 and a sour jujube piece 45, with idle running and the clip direction of utilizing sour jujube piece 45 control tool heads 40; Wherein, head 31 is provided with an accommodation space 32 that is used for ccontaining tool heads 40, the contiguous upper limb of accommodation space 32 inner faces place is provided with a latch closure groove 33, buckle 36 restriction tool heads 40 by utilizing the C type, again, head 31 is provided with a sour jujube piece groove 34 that is communicated with accommodation space 32 in adjacent body 30 1 sides, and sour jujube piece groove 34 inner edge both sides and accommodation space 32 wall both sides are tangent shape, for ccontaining sour jujube piece 45, the end face of body 30 corresponding sour jujube piece grooves 34 is formed with an allocating slot 35, and body 30 sour jujube piece grooves 34 inner faces are formed with a containing hole 37; Tool heads 40 outer rims are provided with the ratchet 41 of series, sour jujube piece 45 1 sides are provided with and the corresponding ratchet 46 of tool heads 40 ratchets 41, and sour jujube piece 45 two ends protrude out respectively and are provided with the fitting portion 450 that a curved taper is brought together, this two fitting portion 450 can be arranged on the angle space between tool heads 40 and sour jujube piece groove 34 both sides fully, make sour jujube piece 45 when either side clip tool heads 40, the flank of tooth of corresponding fitting portion 450 ratchets 46 can be fully and tool heads 40 ratchets 41 flank engagement, and fitting portion 450 back side lateral margins can paste the inner face that is against sour jujube piece groove 34 correspondences fully, are clamped by sour jujube piece 45 fitting portions 450 angle spaces more when tool heads 40 is rotated more; Moreover sour jujube piece 45 back side central authorities are formed with wavy depression location edge clipping 451; Sour jujube piece 45 end faces are fixed with a driving lever 47 that passes body 30 allocating slots 35, with 45 displacements of operation control sour jujube piece, be provided with a rubber-like in body 30 containing holes 37 and push up the structure 48 of pulling, this top structure 48 of pulling can support the location edge clipping 451 of sour jujube piece 45, the location is used after supplying sour jujube piece 45 to stir, and constitutes the ratchet device with high torsion structure that a positive motion is good and cost is low thus.

When the utility model uses in reality, at first, consult Fig. 3, shown in Figure 4, this ratchet device at sour jujube piece 45 after a side clip tool heads 40, but in the angle space that the fitting portion 450 insertion tool heads 40 of sour jujube piece 45 corresponding sides and sour jujube piece groove are 34, and ratchet 46 flank of tooth that make sour jujube piece 45 corresponding fitting portions 450 can be fully and corresponding ratchet 41 flank engagement of tool heads 40, these fitting portion 450 back sides also can abut in sour jujube piece groove 34 corresponding inner faces fully simultaneously, the twisting resistance of sour jujube piece 45 can be evenly distributed on the ratchet 46 and back of the body edge of each engagement, significantly improve its twisting resistance; Cooperate chimeric adjacent 450 to be the design that the camber taper is brought together again, when tool heads 40 is rotated more, sour jujube piece 45 fitting portions 450 can be clamped by the angle space more, and the gap of eliminating 41,46 of tool heads 40 and sour jujube piece 45 ratchets fully, the phenomenon of avoiding an opinion power displacement even jumping tooth or collapse tooth, effectively increase the service life, and the positive motion in the time of can improving it and screw at last, thereby improve its twisting resistance once more, absorbed by sour jujube piece 45 fully owing to torsion simultaneously, subduction driving lever 47 waits the strain problem of other assemblies, reduces driving lever 47 and waits other assemblies to destroy the appearance of breakage problem.

Consult Fig. 5, shown in Figure 6, another embodiment of the present utility model uses wrench body 50 ends of this ratchet device to be provided with a head 51, wherein, head 51 is provided with the accommodation space 52 that an apical margin has latch closure groove 53, for ccontaining tool heads 60, and utilizes a C type to buckle 56 restrictions; Moreover head 51 accommodation spaces 52 1 sides are provided with one for the connection sour jujube piece groove 54 that sour jujube piece 65 is set, and sour jujube piece groove 54 is recess, to increase the thickness of sour jujube piece 65, and body 50 and sour jujube piece groove 54 corresponding end faces are provided with an allocating slot 55, and again, body 50 sour jujube piece grooves 54 inner faces are provided with a containing hole 57; Tool heads 60 outer rims are provided with the ratchet 61 of series, sour jujube piece 65 1 sides are provided with corresponding ratchet 66, these sour jujube piece 65 two ends protrude out the fitting portion 650 that a curved taper is brought together respectively, this two fitting portion 650 can be set in the angle space between tool heads 60 and sour jujube piece groove 54 both sides fully, moreover sour jujube piece 65 back side central authorities are formed with wavy depression location edge clipping 651, and sour jujube piece 65 end faces are fixed with a driving lever 67 that passes allocating slot 55, can support the elastic top support structure 68 that sour jujube piece 65 is located edge clippings 651 and be provided with one in body 50 containing holes 57, constitute a ratchet device with high torsion structure thus.

Consult Fig. 7, shown in Figure 8, the another embodiment of the utility model, these wrench body 70 ends are formed with a head 71, wherein, be formed with an accommodation space 72 for ccontaining tool heads 80 on the head 71, accommodation space 72 end faces utilize a latch closure device 73 restriction tool heads 80, head 71 is formed with one for the peppery groove 74 that is installed with sour jujube piece 85 in accommodation space 72 1 sides, be positioned on the body 70 that sour jujube piece groove 74 differs from accommodation space 72 lateral margins and be formed with a driving lever groove 75 in addition, driving lever groove 75 can be for being pivoted a poke rod 90, in addition, body 70 is formed with a containing hole 76 at driving lever groove 75 inner faces, be provided with a location structure 77 of replacing poke rod 90 in this containing hole 76, stir the spacing usefulness in back for poke rod 90; Tool heads 80 outer rims also are formed with serial ratchet 81, and sour jujube piece 85 1 sides are formed with corresponding ratchet 86, again, sour jujube piece 85 two ends protrude out the fitting portion 850 that a curved taper is brought together respectively, this two fitting portion 850 can be arranged on the angle space between tool heads 80 and sour jujube piece groove 74 both sides fully, moreover, sour jujube piece 85 back side central authorities are formed with wavy depression location edge clipping 851, and the top that poke rod 90 corresponding sour jujube piece 85 peripheries are provided with corresponding location edge clipping 851 structure 95 of pulling, allow sour jujube piece 85 can accept the effect of poke rod 90 and running fix, thereby constitute a ratchet device with high torsion structure.

By above-mentioned explanation, but the utility model removes the effective simplification assembly, reduces outside the manufacturing cost, also can stir the sour jujube piece fast, improves the convenience of operation control, and has following effect and advantage: 1, promote the twisting resistance effect.This ratchet device at the sour jujube piece after a side clip tool heads, but in the angle space between suitable insertion tool head of the fitting portion of the corresponding side of sour jujube piece and sour jujube piece groove, make the ratchet flank of tooth of the corresponding fitting portion of sour jujube piece can corresponding with tool heads fully ratchet flank engagement, this fitting portion back side also can abut in the corresponding inner face of sour jujube piece groove fully simultaneously, the twisting resistance of sour jujube piece can be evenly distributed on the ratchet and back of the body edge of each engagement, increase substantially its twisting resistance.2, positive motion height.The structural design that the curved taper of this ratchet device sour jujube piece fitting portion is brought together, make tool heads rotation more, sour jujube piece fitting portion can be clamped by the angle space more, thereby can eliminate the gap between the ratchet of tool heads and sour jujube piece fully, except that improving its twisting resistance once more, also can avoid the phenomenon that the tension force displacement takes place even jump tooth or collapse tooth, the positive motion when improving it and screwing at last.3, increase the service life.Brought forward is described, because its gap disappears, therefore sour jujube piece and tool heads can mesh fully, except being not easy because of the gap, jumping tooth or collapse tooth and cause the abrasion, also because torsion is absorbed by the sour jujube piece fully, reduce the strain problem of other assemblies such as driving lever, other assemblies such as minimizing driving lever destroy the probability that breakage problem occurs because of ratchet device in the process that operation is pulled, so, can effectively increase the service life.4, reduce cost.Through above-mentioned explanation, because its sour jujube piece is when tool heads screws, fitting portion can more clamp, thereby form a kind of phenomenon of automatic compensation, therefore its requirement on machining accuracy is reduced, like this, not only can alleviate the difficulty of processing, also can reduce the incidence of bad product, invisible has been reduced the cost of making.

By said structure design, the utility model also improves its positive motion, and reduces cost, and do not see identical or approximate product creation or public use in identical technical field except that can solving the antitorque hypodynamic problem that existing ratchet device faced; Promoted effect simultaneously, so, file an application in accordance with the law.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims (1)

1, a kind of ratchet device with high torsion structure comprises body; This body end is provided with head, and is provided with the accommodation space and the sour jujube piece groove of connection in the head, is respectively equipped with tool heads and the sour jujube piece with corresponding ratchet in accommodation space and the sour jujube piece groove, and engagement of sour jujube piece and clip tool heads; It is characterized in that: described tool heads outer rim is provided with serial ratchet, sour jujube piece one lateral margin is provided with the ratchet corresponding with the tool heads ratchet, sour jujube piece two ends protrude out respectively and are provided with the fitting portion that a curved taper is brought together, this two fitting portion is arranged on tool heads and the folded angle space of inner face, sour jujube piece groove both sides fully, the sour jujube piece is to either side clip tool heads, complete and the tool heads ratchet flank engagement of its flank of tooth corresponding with the fitting portion ratchet, fitting portion back side lateral margin are pasted fully and are against the corresponding inner face of sour jujube piece groove.

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