A kind of combined type ratchet screwdriver
Technical field
The utility model relates to a kind of screwdriver, relates in particular to a kind of ratchet screwdriver.
Background technology
Existing screwdriver is at the handle front end and sets firmly a metal system mobile jib, and the mobile jib free end is provided with the pulling part of a cross or a word shape, grips handle with palm in use, and continues rotation, drives pulling part by handle and rotates, so that as loosening, tighten bolt.When this screwdriver uses, the user need constantly do the action that loosens, tighten palm, be in order to palm to be easy to force application location along tooth, and handle, pulling part is structure as a whole, therefore user's action that must constantly loosen, tighten palm is operated, and uses very inconvenient.
In order to solve above-mentioned technical problem, ratchet screwdriver has appearred, ratchet mechanism as the disclosed a kind of bottle opener of Chinese utility model patent ZL02246025.X, this mechanism is provided with a main body, it comprises articulated section, storage tank, sleeve pipe, brake apparatus, lid, and the articulated section is the end outward radial extension that autonomous agent extends screw handle; Storage tank is that the big section of this storage tank and center through hole interconnects along the arc cell body of the outer rim formation of articulated section center through hole; One sleeve pipe is that part is hubbed in the center through hole of main body, and this sleeve pipe is provided with a polygonal hole that axially runs through; One brake apparatus, it is to be installed on the pin joint seat of main body sleeve pipe is located, this sleeve pipe is to run through brake apparatus away from an end of main body, this brake apparatus comprises first, second brake block, this two brake block is to be placed in respectively in the storage tank of pin joint seat with mutual symmetrical manner, and optionally be equipped on the ring gear of sleeve pipe, be provided with a spring between two brake block; Lid is hubbed on the pin joint seat of main body.The utility model can reach the effect that enlarges the ratchet screw scope of application and make things convenient for the user to operate really.But this ratchet mechanism structure more complicated, production cost is higher.In addition, the driver bit of this patent is to be directly installed on the sleeve pipe, and sleeve pipe has only an installing port, has limited the scope of application of this ratchet screwdriver to a certain extent.
Summary of the invention
In order to solve the technological deficiency that above-mentioned patent exists, the purpose of this utility model provides a kind of convenient use, combined type ratchet screwdriver simple in structure.
To achieve the above object, the utility model has adopted following technical scheme:
A kind of combined type ratchet screwdriver comprises handle and is fixed on ratchet device on the handle that ratchet device is provided with the axial center through hole that is used to install driver bit, and described ratchet device comprises:
A connecting seat, Connection Block is fixedlyed connected with handle, and its exterior circumferential is provided with chute, and externally axially is arranged with 2 storage tanks;
One sleeve, sleeve is rotatably connected with Connection Block, and cover tube bottom inner periphery has some latches to equal portion;
2 brake block, brake block are arranged at respectively in the storage tank, and the brake block top is provided with the sloping platform that is complementary with latch, and the brake block bottom is respectively equipped with spring, and 2 brake block selectivity are equipped on the latch of cover tube bottom;
One arc shaped slider, arc shaped slider are arranged in the chute of Connection Block and control 2 brake block and latch clutch state;
One overcoat, overcoat are arranged on the outer ring of Connection Block, and fixedly connected with arc shaped slider.
Above-mentioned arc shaped slider middle part can be provided with screw hole, and arc shaped slider is fixedlyed connected with overcoat by screw.By the turn overcoat, drive arc shaped slider and circumferentially slide, control 2 brake block and latch clutch state.
As preferably, be provided with the inclined-plane in above-mentioned arc shaped slider two ends, brake block is provided with the draw-in groove that matches with arc shaped slider.Arc shaped slider circumferentially slides, and arc shaped slider one end is inserted into the draw-in groove on the brake block, and brake block is separated with latch, and another brake block then is equipped on the latch owing to spring action.
In order to make arc shaped slider not slip over head, on above-mentioned chute, can be provided with the spacing preiection of restriction arc slide block movement simultaneously.
As preferably, be provided with packing ring between sleeve and the Connection Block.
In order to control the overcoat rotation distance, radially be provided with a blind hole in the Connection Block outer rim, blind hole is built-in with the decorative pearl on top of an official cap that a spring and part ccontaining can inwardly be compressed spring, and the decorative pearl on top of an official cap partly protrudes the outer rim of Connection Block, and described jacket bottom inboard is provided with locating slot.As preferably, the jacket bottom inboard be provided with three can ccontaining decorative pearl on top of an official cap exposed parts locating slot.Three locating slots, the distance that the control overcoat rotates makes screwdriver work be divided into 3 gears, and being respectively changes a job clockwise makes shelves, rotation work shelves and change a job counterclockwise and make shelves not.
Can be provided with the double end extension bar in the above-mentioned axial center through hole, double end extension bar two ends are respectively equipped with the driver bit installing port, and double end extension bar outside is provided with axial positioning rib, and axially the center through hole inboard is provided with the groove that is complementary with positioning rib.As preferably, be provided with magnet in the above-mentioned installing port.The utility model is by ratchet and double end extension bar, and driver bit all can be installed in double end extension bar two ends, has enlarged the scope of application of screwdriver greatly.
The utility model is owing to adopted above technical scheme, and by arc shaped slider control brake block and latch clutch state, ratchet screwdriver can change clockwise, and is also with counterclockwise commentaries on classics, easy to use.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram.
Fig. 2 is the whole normal cross-section structural representation of the utility model.
Fig. 3 is the assembling schematic diagram of the utility model ratchet device and double end extension bar.
Fig. 4 is the structural representation of overcoat among Fig. 2.
Fig. 5 is the cutaway view of the A-A of Fig. 4.
Fig. 6 is the structural representation of Fig. 2 middle sleeve.
Fig. 7 is the cutaway view of the B-B of Fig. 6.
Fig. 8 is the assembly structure schematic diagram of Connection Block and arc shaped slider among Fig. 2.
Fig. 9 is the C-C cross-sectional view of Fig. 8.
Figure 10 is the structural representation of brake block among Fig. 2.
Figure 11 is the left view of Figure 10.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is made a detailed explanation.
A kind of combined type ratchet screwdriver as shown in Figure 1 and Figure 2, comprise handle 1 and be fixed on ratchet device 2 on the handle 1, ratchet device 2 is provided with the axial center through hole 5 that is used to install driver bit 4, and described ratchet device 2 comprises Connection Block 7, sleeve 6,2 brake block 9, arc shaped slider 10 and overcoats 8.Described Connection Block 7 is fixedlyed connected with handle 1, is provided with packing ring 11 between sleeve 6 and the Connection Block 7, and sleeve 6 is rotatably connected with Connection Block 7, to equal portion 12 latches 61 (as Fig. 6, shown in Figure 7) is arranged at sleeve 6 bottom inner peripherys.
As Fig. 2, Fig. 8, shown in Figure 9, Connection Block 7 is fixedlyed connected with handle 1, its exterior circumferential is provided with chute 71, and externally axially be arranged with 2 storage tanks 72, described brake block 9 is arranged at respectively in the storage tank 72, brake block 9 tops are provided with the sloping platform 92 (as Figure 10, shown in Figure 11) that is complementary with latch 61, are respectively equipped with 92,2 brake block 9 selectivity of spring in brake block 9 bottoms and are equipped on the latch 61 of sleeve 6 bottoms.Described arc shaped slider 10 is arranged in the chute 71 of Connection Block 7 and controls 2 brake block 9 and latch 61 clutch states.
As Fig. 8, shown in Figure 9, arc shaped slider 10 two ends are provided with inclined-plane 102, and brake block 9 is provided with the draw-in groove 91 (as Figure 10, shown in Figure 11) that matches with arc shaped slider 10.Arc shaped slider 10 drives in chute 71 by overcoat 8 and circumferentially slides, arc shaped slider 10 1 ends are inserted into the draw-in groove 91 on the brake block 9, brake block 9 is separated with latch 61, and 9 of another brake block are realized the screwdriver one-directional rotation because spring 75 effects are equipped on the latch 61.In order to make arc shaped slider 10 not slip over head, on chute 71, be provided with the spacing preiection 73 of restriction arc shaped slider 10 motions simultaneously.
As Fig. 2, Fig. 4, shown in Figure 5, overcoat 8 is arranged on the outer ring of Connection Block 7, and arc shaped slider 10 is provided with screw thread mouth 101, and overcoat 8 is fixedlyed connected with arc shaped slider 10 by screw 82.As shown in Figure 8, Connection Block 7 outer rims radially are provided with a blind hole 74, and blind hole 74 is built-in with the decorative pearl on top of an official cap 76 that a spring 75 and part ccontaining can inwardly be compressed spring 75, and the decorative pearl on top of an official cap 76 parts are protruded the outer rim of Connection Block 7.As Fig. 4, shown in Figure 5, overcoat 8 bottom inside be provided with three can the ccontaining decorative pearl on top of an official cap 76 exposed parts locating slot 81.
As Fig. 2, shown in Figure 3, in order to enlarge the scope of application of screwdriver, axially center through hole 5 inboards are provided with groove 62, axially be provided with double end extension bar 6 in the center through hole 5, double end extension bar 6 two ends are respectively equipped with the installing port 31,32 of driver bit 4, double end extension bar 6 outsides are provided with the axial positioning rib 33 that is complementary with groove 62, and are provided with magnet 34 in installing port 31,32, and driver bit 4 is installed on the installing port 31,32.