CN2201214Y

CN2201214Y - Ratchet screwdriver

Info

Publication number: CN2201214Y
Application number: CN 93246270
Authority: CN
Inventors: 徐宏奇
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-30
Filing date: 1993-12-30
Publication date: 1995-06-21
Anticipated expiration: 2003-12-30

Abstract

The utility model relates to an improved ratchet screwdriver, comprising a handle and a sheath seat, a sleeve, a detent, a steering control apparatus and a stop-return flake of a ratchet mechanism. The front and the rear of the sheath seat alcove are provided with pushing grooves respectively, and a lug is arranged on one end of the alcove. The detent is connected by a connecting rod joint between the middle of two L-shaped locating plates, wherein, the cover of the locating plate is arranged in the inner of pushing groove with a protruding bar inside, and two shrapnels of the divert controller bottom are butted with the inner upward extending baffles of the L-shaped locating plates respectively. Ratchet screwdriver has the advantages of easy assembly and successful slippage of the detent.

Description

Ratchet screwdriver

The utility model relates to a kind of ratchet screw.

Take a broad view of the instrument that is used for installing screw, have and ratchet mechanism is housed in a kind of can makes screwdriver (being screwdriver) along the rotation of anti-two directions advance and retreat, its structure is shown in accompanying drawing 6～8.Wherein, accompanying drawing 6 is perspective exploded view of prior art ratchet screw; Accompanying drawing 7 is combined side cutaway views of accompanying drawing 6; Accompanying drawing 8 is combination cross-sectional end view of accompanying drawing 6.This ratchet screw is combined with ratchet mechanism 2 by handle 1 to be formed; Wherein, ratchet mechanism 2 is made up of members such as block set 21, sleeve 22, pallet 23, steering controller 24, retaining sheet 25 and sleeve pipes 26; Wherein, block set 21 rear ends are provided with and are used for the canned paragraph 211 that is connected with handle 1, its front end is provided with assembly hole 212, be used to insert sleeve 22, these sleeve 22 rear ends are provided with ratchet 221, and sleeve 22 front ends are to be placed in the sleeve ends 222 that the hex(agonal)screw head makes the hex(agonal)screw rotation, can add a cross or a word screwdriver head within it; On block set 21, be provided with the recessed room 213 that is connected with assembly hole 212, put into recessed room 213 in order to cooperate pallet 23, be provided with plane 214 in its back-end, inclined plane 215 is passed through again near the rear end end wall in this plane, the sidewall face that sink respectively at recessed room 213 front ends forms plane 216, and groove 217 is passed through near aft bulkhead in this plane 216; When pushing block 242 is positioned at guide groove 261 middle positions, as shown in Figure 7, one is attached at plane 214 and another is attached on the plane 216 in two pallets 23, and these pallet 23 front ends have the positioning body 231 that can engage with ratchet 221, and both sides are provided with flange 232 in its back-end; Be provided with two in steering controller 24 lower ends and become the splay shell fragment 241 that is tight against pallet 23, be provided with U-shaped pushing block 242 in the top; Retaining sheet 25 is located in the breach of sleeve 21 belows, is located with retaining sheet 25 in the time of in sleeve 22 is inserted block set 21; Be arranged in the appropriate location of block set 21 of ratchet mechanism 2 respectively when sleeve 22, pallet 23, steering controller 24 and retaining sheet 25 after, be enclosed within on the block set 21 with sleeve 26, be provided with guide groove 261 in sleeve pipe 26 upper ends, pushing block 242 on the steering controller 24 protrudes in outside the sleeve pipe 26 from guide groove 261, this guide groove 261 have retreat, central authorities and an ahead three position.

To above-mentioned each parts of prior art ratchet screw assemble in regular turn finish after, the end user can utilize the steering controller 24 in this ratchet mechanism 2 that sleeve 22 is turned to, wherein, when the pushing block 242 of steering controller 24 is positioned at the middle position of guide groove 261, two shell fragments 241 of steering controller 24 can be closely against respectively on two pallets 23, make its parallel being posted by on plane 214 and the plane 216, positioning body 231 then can engage by two-way roller seating space with ratchet 221, thereby sleeve 22 is lockable in block set 21; And on the pushing block 242 with steering controller 24, push away, be located at guide groove 261 retreat postposition the time, then the shell fragment 241 of steering controller 24 just makes the pallet 23 of one of them be posted by on the inclined plane 215 of recessed room 213 with flange 232, and formation perk shape, at this moment, the positioning body 232 of this pallet 23 just breaks away from the roller seating space of ratchet 221, makes sleeve 22 only can make counter-clockwise direction in block set 21 and rotates; Push away downwards as pushing block 242 steering controller 24, be located at the progressive position of guide groove 261, then the shell fragment 241 of steering controller 24 just makes another pallet 23 be posted by in the groove 217 of recessed room 213 with flange 232, and formation perk shape, at this moment, the positioning body 232 of this pallet 23 just breaks away from the roller seating space of ratchet 221, makes sleeve 22 only can make clockwise direction in base 21 and rotates.The ratchet screw of this prior art is in the practice process, because its structural limitations has following shortcoming:

1. when under the promotion that is subjected to two shell fragments of steering controller, becoming the perk shape in order to two pallets of clip ratchet, break away from the clip state, make sleeve only do inhour or clockwise direction rotation, yet, when the shell fragment contact of steering controller and driving pawl make its perk, the opposing of pallet can be subjected to and therefore use inconvenience can not be successfully promoted;

2. when when assembling, need put steering controller in recessed room, and a pallet is set respectively on the shell fragment of its both sides, if put the position of pallet when being partial to groove slightly, will make the pallet perk, therefore assembling is inconvenient.

The diligent spirit of one of the design people, and rely on its abundant professional knowledge and experience to be improved at the shortcoming of above-mentioned prior art is made the utility model ratchet screw finally through research and experiment repeatedly.

The utility model purpose is: a kind of ratchet screw of improvement is provided, makes the smooth-going driving pawl sleekly of steering controller shell fragment energy of this ratchet screw, and be easy to assembling.

The utility model purpose reaches like this: the ratchet screw that a kind of improvement is provided, have block set, sleeve, pallet, steering controller, retaining sheet and sleeve pipe in handle, the ratchet mechanism, it is characterized in that: on block set, be provided with the recessed room that is connected with assembly hole, forward and backward two ends in this recessed room are respectively equipped with to the left and right sides extends and the groove of slippaging of broad, by recessed room one end with the corresponding position of sleeve pipe front end on be provided with projection; Pallet is integrated chimeric lamellar body, be sheathed in the recessed room of block set accordingly and with leaving nargin, pallet by to the inside location-plate of two corresponding L shaped, openings that form, in the middle of these two location-plates they are coupled together and project upwards the connecting rod that is platform-like, inside respectively two antisymmetric raised lines that vertically stretch out are formed in two location-plate inboards, location-plate is sheathed in the groove of slippaging accordingly, and two shell fragments of steering controller bottom are closely against respectively in the upwardly extending baffle plate of L shaped location-plate.

The utlity model has following advantage:

1. the rear and front end in the recessed room of block set is respectively equipped with the groove of slippaging of both sides extension to the left and right and broad, location-plate correspondence for pallet is sheathed, when retreating or during forward motion along the recessed room of block set by the steering controller driving pawl, the location-plate that makes pallet simultaneously also along the groove of slippaging of recessed room backward or to front slide, in retaining the groove of slippaging of nargin when location-plate slides into closing in the boundary end of the groove of slippaging, pallet promptly no longer advances toward this direction, therefore this ratchet screw not only can make pallet slide smoothly, and behind the default stroke that slides and closing during, can guarantee that pallet no longer moves on to the boundary end of the groove of slippaging.

2. when the location-plate top of pallet group is established steering controller, only need shell fragment with the steering controller lower end be closely against respectively in the baffle plate of location-plate and get final product, therefore, it is very convenient to assemble.

Below by accompanying drawing technological means that the utility model used and the effect of reaching further are illustrated.

Accompanying drawing 1 is the perspective exploded view of the utility model ratchet screw.

Accompanying drawing 2 is the utility model pushing block assembled sectional views when being positioned at the guide groove middle position.

Accompanying drawing 3 is the utility model pushing block assembled sectional views when being positioned at the guide groove going-back position.

Accompanying drawing 4 is the utility model pushing block assembled sectional views when being positioned at the guide groove progressive position.

Accompanying drawing 5 is A-A cross-sectional schematic of accompanying drawing 4.

Accompanying drawing 6 is prior art ratchet screw perspective exploded view.

Accompanying drawing 7 is prior art ratchet screw combined side cutaway views.

Accompanying drawing 8 is prior art ratchet screw combination cross-sectional end view.

At first, from the utility model perspective exploded view of accompanying drawing 1 as seen, the utlity model has the sleeve 61 in handle same as the prior art 5 and the ratchet mechanism 6, members such as steering controller 62, retaining sheet 63 and sleeve pipe 64, of the present utility model being characterised in that improved block set 3 and pallet 4.

Block set 3 rear ends are provided with and are used for the canned paragraph 31 that is connected with handle 5, its front end is provided with assembly hole 32, be used to insert sleeve 61, on block set 3, be provided with the recessed room 33 that is connected with assembly hole 32, forward and backward two ends in this recessed room 33 are respectively equipped with extends the also groove 331 of slippaging of broad to the left and right sides, by recessed room one end with corresponding position, sleeve pipe 61 rear ends on be provided with projection 34, for the location (seeing accompanying drawing 1 and 3) of sleeve 61 rear ends.

Pallet 4 is integrated chimeric lamellar bodies, can be accordingly and be sheathed in the recessed room 33 of block set 3 with leaving nargin; Pallet 4 by to the inside location-plate 41 of corresponding L shaped, the opening that forms on two, in the middle of these two location-plates they are coupled together and project upwards the connecting rod 42 that is platform-like, inside respectively two antisymmetric raised lines 411 that vertically stretch out are formed in two location-plates, 41 inboards, location-plate 41 is sheathed in the groove 331 of slippaging accordingly, and two shell fragments 621 of steering controller 62 bottoms are closely against respectively in the upwardly extending baffle plate 412 of L shaped location-plate.

When combination is implemented, shown in attached Fig. 1 and 2, the sleeve 61 that the rear end is had a ratchet 611 passes assembly hole 32 and inserts in the recessed room 33 of block set 3, and pallet 4 is sheathed in the recessed room 33 of block set 3, the location-plate 41 at pallet 4 two ends just is inserted in the groove 331 of slippaging of recessed room 33 rear and front ends accordingly, then, be inserted in the shell fragment 621 of steering controller 62, and shell fragment 621 is closely against in the baffle plate 412 of location-plate 41 corresponding to location-plate 41 top sides; Again retaining sheet 63 is inserted in the breach of block set 3 lower ends (can consult accompanying drawing 3 in the lump), so that the ratchet 611 of backstop sleeve 61 is in recessed room 33, subsequently sleeve pipe 64 is placed on the block set 3, the pushing block 622 of steering controller 62 is protruded in outside the guide groove 641, again the canned paragraph 31 of block set 3 is inserted in the hole of handle 5, form whole ratchet screw.

When the pushing block on the steering controller 62 622 is positioned at the middle position of guide groove, (as shown in Figure 2), two raised lines 411 of pallet 4 inboard institute tools are projection and being sticked in the roller seating space of ratchet 611 respectively just, thereby sleeve 61 is locked in the block set 3, can not freely rotate.When the pushing block 622 with steering controller 62 is pushed to that guide groove 241 retreats or during progressive position, (shown in accompanying drawing 3～5), can make the baffle plate 412 of location-plate of the shell fragment 621 pushing tow pallets 4 of steering controller 62, and pallet 4 is retreated or forward motion along the recessed room of block set 3, abut against slippaging during groove 331 boundary ends when the location-plate 41 of pallet 4 simultaneously in recessed room 33, a raised line 411 in the opposite side pallet 4 can be given prominence to and engage with the roller seating space of ratchet 611, thereby makes sleeve 61 only can do inhour or clockwise rotation in block set 3.

Claims

1, a kind of ratchet screw, has the block set (3) in handle (5), the ratchet mechanism (6), sleeve (6), pallet (4), steering controller (62), retaining sheet (63) and sleeve pipe (64), it is characterized in that: on block set (3), be provided with the recessed room (33) that is connected with assembly hole (32), forward and backward two ends in this recessed room (33) are respectively equipped with to the left and right sides extends and the groove of slippaging (331) of broad, by recessed room (33) one ends with the corresponding position of sleeve pipe (61) front end on be provided with projection (34); Pallet (4) is integrated chimeric lamellar body, be sheathed on accordingly and in the recessed room (33) of block set (3) with leaving nargin, pallet (4) is by two corresponding form L shaped, opening location-plate (41) to the inside, in the middle of these two location-plates, they are coupled together and project upwards the connecting rod (42) that is platform-like, two the antisymmetric raised lines (411) that inwardly vertically stretch out respectively in two location-plate inboards are formed, location-plate (41) is sheathed in the groove of slippaging (331) accordingly, and two shell fragments (621) of steering controller (62) bottom are closely against respectively in the upwardly extending baffle plate of L shaped location-plate (421).