CN1121926C

CN1121926C - Ratchet driven tool

Info

Publication number: CN1121926C
Application number: CN00103294A
Authority: CN
Inventors: 胡厚飞
Original assignee: XINGLIANFENG CO Ltd
Current assignee: XINGLIANFENG CO Ltd
Priority date: 2000-03-23
Filing date: 2000-03-23
Publication date: 2003-09-24
Anticipated expiration: 2020-03-23
Also published as: CN1473688A; CN100384592C; CN1269278A

Abstract

The present invention relates to a ratchet driven tool which comprises a spanner, a box end, a handle, a ratchet wheel and a ratchet, wherein the box end is arranged on one end of the spanner, and the handle is fixedly arranged on the other end of the spanner; the ratchet wheel comprises an inner circumferential surface and an outer circumferential surface; a plurality of inner concave teeth are arranged on the middle section of the outer circumferential surface; a plurality of teeth matched with the inner concave teeth of the ratchet wheel are arranged on one side of the ratchet. The ratchet driven tool of the present invention distinguishes the use direction of the ratchet driven tool, greatly reduces the manufacture and processing cost, has simple structure, realizes a rapidest assembly position structure with fewest components, and solves the tolerance problem through the compact clamp positioning arrangement.

Description

A kind of ratchet-driven tool

Technical field

The present invention relates to a kind of hand-operated tools, the especially a kind of ratchet-driven tool that can in being difficult to the small space that stretches into and be difficult to operate, work with this pawl structures.

Background technology

Market has multiple spanner now, for in the small space that is difficult to stretch into and is difficult to the various ratchet-driven tools of operation, wanting rotational fixture (nut for example, bolt etc.) operation, double offset ring spanner is best selection, yet, the use angle of tradition double offset ring spanner is too big, someone proposes to solve with the ratchet-type double offset ring spanner, ratchet of casket end interior arrangement of this double offset ring spanner, thereby rotational fixture under high moment of torsion, this kind structure has been disclosed in the Taiwan patent gazette No. 378588, in one utility model patent of " ratchet spanner structural improvement " by name (annex one), the disclosed technology contents of this known patent is mainly: comprise a wrench body, this wrench body is divided into a head and a shank, wherein, be formed with an accommodation space in the middle of the head, and be arranged in the accommodation space with a ring-like ratchet, ring-like ratchet outer edge side is provided with ratchet, be arranged with a space that is provided with angle of inclination in the Wrench head inboard, this open side that space one side is set is connected with accommodation space, and be provided with in it with a clamping tooth piece, this clamping tooth piece is provided with clamping tooth, and establish a spring in the bottom, space is set with the clamping tooth interblock, make to be tight meshing state between clamping tooth piece and ring-like ratchet; In view of the above, when ring-like ratchet forward rotation, the clamping tooth piece is subjected to ring-like ratchet toward the pushing and pressing that space open side direction strength is set, and can therefore not be the blocking state for moving but clamping block has had the space outward; When ring-like ratchet backwards rotation, clamping tooth is subjected to ring-like ratchet toward the pushing and pressing that space bottom direction reinforcing is set, so the clamping tooth piece shrinks back toward being provided with in the space, and is releasing blocking state.

To be arranged with a space that is provided with angle of inclination in the Wrench head inboard, above-mentioned known technology makes clamping tooth piece and 30 on ring-like ratchet be oblique meshing, but the clamping tooth of clamping tooth piece only has two teeth, the torsion that can bear is quite limited, moreover a sizable mistake has taken place in this known technology on concrete enforcement, be exactly that fit on can't be implemented, because the Wrench head inboard is arranged with a space that is provided with angle of inclination, this open side that space one side is set is connected with accommodation space, two spaces are all exposed state, so ring-like ratchet does not have the structure setting of any location in accommodation space, and a clamping tooth piece and a spring are located at space bottom are set, any backstop design is not also arranged, when so practical operation is pulled, ring-like ratchet, clamping tooth piece and spring all can be deviate from by Wrench head, thereby do not have any practicality.

Please consult the Taiwan patent announcement again No. 359207, the utility model patent (annex two) of " the unidirectional clamping structure improvement of ratchet spanner " by name, the technology contents that this known technology disclosed is mainly this wrench body and has a ratchet head, inside is installed with a ratchet-gear wheel, be provided with a holding part at ratchet head side lock, this holding part also is the angles of 12 to 18 degree with the horizontal-extending at ratchet head center, and holding part appropriate location in the outer part is formed with a thread segment; Brake block is located in the holding part, be one slightly to be the member of terraced font, one end is formed with the brake tooth that is meshed with ratchet-gear wheel, end is then locked and is established a room in addition, for a sheathed spring element: spring is a flexible member, be arranged in the room of brake block, borrow elastic-restoring force to make brake block can be the blocking state at any time; The plug screw spiral shell is located at the thread segment of holding part, and an end forms a recess, and end then is arranged with into the hexagonal seat in addition, with fixing spring and brake block; Thus, can utilize the ratchet head central horizontal of holding part and wrench body to extend the oblique angles design be 12 to 18 degree, and make brake block be sheathed on when interior, its brake tooth can be the blocking shape with the tangent line of angle.

The assembling mode that No. the 359207th, the Taiwan patent announcement is screwed into holding part by plug screw in the mode that screws togather, this kind screws togather design and made a sizable mistake, promptly with the mode plug of plug screw in the outside of brake block and spring, the problem that the degree of depth that easy generation plug screw is screwed into holding part can't be accurately controlled, because the degree of depth that plug screw is screwed into certainly will influence the pushing tow ability of brake block, if plug screw screws togather not deep enoughly, brake block is had no idea and ratchet-gear wheel produces engagement fully, the phenomenon that causes brake block to jump tooth easily takes place, otherwise, if be screwed into too deeply, the space that brake block is made a concession diminishes, be more prone to cause phenomenon stuck between brake block and the ratchet-gear wheel, in fact, screw thread design with plug screw will enter the plug screw cock in the holding part, will just can reach clamp dog be subjected to spring push optimum state? so the assembler screw in plug screw several spiral shells footpath the grasp of this accuracy believes that the manufacturing producer quality that can reach product that also is not sure of specialty all maintains optimum state, so require high-quality, in the hand tools industry of high efficiency, this kind can not had production efficiency and quality manufacturing assembling mode not naturally and eliminate easily.Use the viewpoint of accurate hand-held tool to inquire into professional maintenance technician again, the engagement ability of brake block and ratchet-gear wheel can produce a parameter along with the assembling of plug screw, promptly represent the quality of this instrument stable inadequately, relative professional person also can not use this kind hand tools, and when brake block dallies, produce the reciprocal start that promotes by spring, plug screw must be affected, can plug screw be got loose under long-term the use, so must this plug screw be fixed with viscose glue, more numerous and diverse assembling modes are in conjunction with above-mentioned each point, can obtain a result, the plug screw that is exactly this technology will cause more defects with the set-up mode that is screwed into.

In addition, the technology that No. the 359207th, the Taiwan patent announcement still need be used cover plate 6 and C type at fit on and be buckled 7 and just can reach the location, assemble numerous and diverse multiplely, improved manufacturing cost, especially cost is higher in the manufacturing of spanner, please cooperate the accompanying drawing of consulting this patent, wherein a flange is formed on the ratchet head bottom, and the moulding of this flange is arranged, and the processing method of manufacturing must can reach precision with CNC instrument locomotive system, cost increases, and causes production bottleneck.

Summary of the invention

The purpose of this invention is to provide a kind of defective that overcomes above-mentioned prior art, a kind of improved ratchet-driven tool is provided, especially so a kind of ratchet-driven tool, wherein form an abdomen part between spanner casket end and the handle, its surface is provided with a sign, this sign is just in time shown the service orientation that does not go out this ratchet-driven tool, can directly reflect the direction of operating of pulling; The surface, outside of ratchet forms first end and second end up and down respectively, and be provided with a plurality of indent teeth in the interlude of first end and second end, wherein second end on the surface, outside of ratchet is that depression has a groove, be placed on the groove of ratchet by a C type clasp, buckle into again in the concave ring groove of spanner casket end, this ratchet is to be installed in the casket end of above-mentioned spanner with rotary way, the wherein moulding of concave ring groove, simultaneously directly run through moulding with broaching tool with the casket end, can significantly reduce the processing cost in the manufacturing, structure is simpler, the assembling of this part, mode, simpler and easy than known configurations, can minimum member reach and assemble the orientation structure the most fast; Design eccentric end on the ratchet, can reach prevention room inclined hole and add the deflection that produces man-hour on the angle, can produce self balancing function with this eccentric end, the tooth on the ratchet all can be remained on the indent tooth that is engaged in ratchet fully, to obtain bearing the state of high torsion.

For achieving the above object, a kind of ratchet-driven tool provided by the present invention comprises:

One spanner, one end are provided with a casket end, and the other end then sets firmly the leader, and wherein an oblique room is run through in side inside between casket end and the handle, and this room is connected with casket end inwall;

One ratchet, it consists predominantly of circumferential surface and surface, an outside in one, form first end and second end up and down respectively on surface, described outside, and be provided with a plurality of indent teeth in the interlude of first end and second end, wherein second concave end on the surface, outside of ratchet has a groove, and a C type clasp is placed in this groove, and buckles in the concave ring groove of casket end of above-mentioned spanner, this ratchet is installed in the casket end of above-mentioned spanner with rotary way

One ratchet, it is arranged in the room of spanner, one side of this ratchet is provided with a plurality of teeth that match with ratchet indent tooth, wherein this end with tooth of ratchet forms an eccentric end, described eccentric end has an inclined-plane, its inclined-plane is the inwall that regards to described room, this inclined-plane is that the inwall with room is formed with the gap, and its inclined-plane is resisted against the inwall of room with A point position, the eccentric end of this ratchet can produce the autobalance adjustment like this, make on the indent tooth of the complete mesh ratchet gear of tooth energy on the ratchet, the other end of described ratchet then is provided with one and is attached to elastic component one end, and the elastic component other end then attaches to an end of a location member;

The inwall of the outer rim of wherein above-mentioned align member and spanner room produces and fixes the location, ratchet and elastic component are arranged in the room and can deviate from.

The present invention has following advantage:

1, ratchet-driven tool of the present invention wherein forms an abdomen part between the casket end of spanner and the handle, its surface is provided with a sign, and this sign is just in time shown the service orientation that does not go out this ratchet-driven tool, can directly reflect the direction of operating of pulling whereby.

2, ratchet-driven tool of the present invention, wherein the surface, outside of ratchet forms respectively up and down and protrudes first end and second end, and concave and be provided with a plurality of indent teeth in the interlude of first end and second end, wherein second end on the surface, outside of ratchet is that depression has a groove, be placed on the groove of ratchet with a C type clasp, buckle into again in the concave ring groove of spanner casket end, this ratchet is to be installed in the casket end of above-mentioned spanner with rotary way, the wherein moulding of concave ring groove, be directly to run through moulding with broaching tool simultaneously with the casket end, significantly reduce the processing cost on making, structure is simpler, and the assembling mode of this part is simpler and easy than known configurations, and the reduction assembly cost, reach with minimum member and to assemble the orientation structure the most fast.

3, ratchet-driven tool of the present invention, wherein the align member outer rim is provided with a pair of salient point, this salient point mainly is to be fixedly arranged on wall within the spanner room, ratchet and elastic component are arranged in the room and can not deviate from, and closely the location of engaging is provided with also eliminable tolerance issues.

Description of drawings

Fig. 1 is the stereo appearance figure of ratchet-driven tool of the present invention;

Fig. 2 is the decomposing schematic representation of ratchet-driven tool of the present invention;

Fig. 3 is the schematic diagram of room on correct angle state of ratchet-driven tool of the present invention;

Fig. 4 is the schematic diagram on the deflected condition for the room angle of ratchet-driven tool of the present invention has error;

Fig. 5 is the ratchet schematic diagram under the eccentric state of tool not of ratchet-driven tool of the present invention;

Fig. 6 is the cutaway view of A-A direction among Fig. 3.

Specific embodiment

Now contrast description of drawings most preferred embodiment of the present invention.

Please consult Fig. 1 to Fig. 3 earlier, the invention provides a kind of ratchet-driven tool, comprising:

One spanner 10, the one end is provided with the casket end 11 of a penetration, the other end then continues leader 12, wherein inwall 111 root edges of casket end 11 are concaved with a circle concave ring groove 112, the moulding of this concave ring groove 112, be with casket end 11 simultaneously with the broaching tool straight forming, thereby reduce the processing cost on making, and formation one abdomen part 13 between casket end 11 and the handle 12, its surface is provided with an oblique sign 14, the direction that this sign 14 tilts is just in time shown the service orientation that does not go out this ratchet-driven tool, and an oblique room 15 is run through in the side inside of this abdomen part 13 in addition, even this room 15 is connected with casket end 11 inwalls 111.

One ratchet 20, include an interior circumferential surface 21 and a surface, an outside 22 that is used for the rotational fixture (not shown), wherein surface, outside 22 forms first end 23 and second end 24 up and down respectively, and be provided with a plurality of indent teeth 25 in the interlude of first end 23 and second end 24, wherein second end, 24 depressions on the surface, outside 22 of ratchet 20 have a groove 241, utilize a C type clasp 26 to be placed on the groove 241 of ratchet 20, buckle into again in the concave ring groove 112 of spanner 10 casket ends 11, as shown in Figure 6, this ratchet 20 can be installed in the casket end 11 of above-mentioned spanner 10 by rotating manner.

One ratchet 30, be one cylindrical and be arranged in the room 15 of spanner 10 abdomen parts 13, one side of this ratchet 30 is provided with a plurality of teeth 31 that match with ratchet 20 indent teeth 25, wherein an end of ratchet 30 forms an eccentric end 32, then for being provided with an end that can engage an elastic component 40, elastic component 40 other ends then are connected to an end of a location member 50 to the other end of ratchet 30.

Wherein the outer rim of align member 50 is provided with one or more salient point 51, this salient point 51 is located at spanner 10 rooms 15 inwalls, whereby ratchet 30 and elastic component 40 are arranged in the room 15, and can not deviate from, and close-fitting location is provided with the tolerance issues that also can eliminate aperture and align member external diameter.

See also structure shown in Figure 3, this is interior turnover face 21 state of rotational fixture not of ratchet 20, wherein the inwall of ratchet 30 1 sides and room 15 produce A point position against, then form the gap of one 6 angles between ratchet 30 eccentric end 32 and the inwall, this state is that the tooth 31 on the ratchet 30 is meshed with ratchet 20 indent teeth 25 fully, and at this moment room 15 is spent with the correct angle 18.5 at ratchet 20 centers.So, the inwall that forms ratchet 30 1 sides and room 15 produce A point position against, then form the gap of 6 angles between ratchet 30 eccentric end 32 and the inwall, for each tooth on the ratchet all can highly mesh with the indent tooth generation of ratchet.

When the user begins to pull spanner 10, when making the interior face on every side 21 beginning rotational fixture of ratchet 20, as shown in Figure 4, the interior face on every side 21 of ratchet 20 can produce a skew force F when beginning rotational fixture, this is oblique, power is transmitted by ratchet 20 indent teeth 25 and tooth 31 engagements on the ratchet 30, and make the tooth 31 on the ratchet 30 also can produce skew force F, when ratchet 30 is subjected to the promotion of skew force F, this ratchet 30 is the promotion that fulcrum bears this skew force F with the A point promptly, because the room 15 of spanner 10 was an oblique holes when volume production was made, so a fixing difficulty is arranged in processing, the inclined hole of room 15 is easy to generate deflection can't reach angle fully accurately, add that necessarily how much having the tolerance skew in batches takes place, so the formation of ratchet 30 eccentric end 32 mainly is to solve room 15 angle excursions inadequately precisely the time, can adjust the tooth matching angle of its tooth 31 automatically, when the room 15 and the angle at ratchet 20 centers are spent by 18.5 of script, when deviation to 20.5 is spent, ratchet 30 is when being subjected to skew force F, can be fulcrum with A, ratchet 30 left ends are a little to the bottom, and produce a balance automatically, and nature can be adjusted a best angle automatically with the tooth on it the 31 A point of fitting fully afterwards;

Otherwise, if ratchet 30 of the present invention is not provided with the words of eccentric end 32, as shown in Figure 5, when the angle at room 15 and ratchet 20 centers by originally 18.5, during deviation to 20.5, A one side of ratchet 30 can abut in room 15 inwalls always, so the tooth 31 on it can because the error of room angle and can't be fully and the indent tooth 25 of ratchet 20 mesh, therefore provable the present invention designs the effect of eccentric end 32 on ratchet 30, in the time of can reaching the deflection on the prevention room 15 generation angles, can utilize this eccentric end 32 is that fulcrum produces self balancing function with A, tooth 31 on the ratchet 30 all can be remained on the indent tooth 25 that is engaged in ratchet 20 fully, to obtain bearing the state of high torsion.

Claims

1. ratchet-driven tool, it is characterized in that: it comprises:

The outer rim of wherein above-mentioned align member is incorporated into the inwall of spanner room, ratchet and elastic component are arranged in the room and can deviate from.