CN203185229U

CN203185229U - Force-increasing screw driver capable of screwing two or more screws simultaneously

Info

Publication number: CN203185229U
Application number: CN 201320176690
Authority: CN
Inventors: 李文尚; 龙芋宏; 廖志强; 杜怀辉; 江威; 刘钧亮; 蔡杰
Original assignee: Guilin University of Electronic Technology
Current assignee: Guilin University of Electronic Technology
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2013-09-11
Anticipated expiration: 2023-04-10

Abstract

The utility model discloses a force-increasing screw driver capable of screwing two or more screws simultaneously. The force-increasing screw driver capable of screwing two or more screws simultaneously comprises screw driver blades, an operation spanner, a gear ratchet wheel set and connecting rods. The gear ratchet wheel set is formed by a ratchet wheel and two or more force augmentation gears. Each force augmentation gear is meshed with an outer gear ring of the ratchet wheel. A ratchet shaft of a ratchet wheel inner ring is fixedly connected with the operation spanner. The connecting rods which correspond to the force augmentation gears in number are arranged between gear shafts of the force augmentation gears and the ratchet shaft. Connecting holes in the two ends of each connecting rod are connected with the ratchet shaft and a corresponding gear shaft. The screw driver blades are arranged in blade seats at the shaft ends on the same side of the gear shafts. The anticlockwise direction of rotation of the operation spanner is set as a screw screwing direction and is opposite to the slip direction of the ratchet wheel. The force-increasing screw driver can screw two or more screws simultaneously; the positions of the screw driver blades can be adjusted and correspondingly adjusted conveniently according to the screws at different positions; the operation spanner is used for increasing the moment of force, and therefore the effect of force increasing is achieved.

Description

Twist two or two reinforcement screwdrivers to tighten up a screw simultaneously

(1) technical field:

The utility model relates to hand-operated tools, specifically is a kind of twist simultaneously two or two reinforcement screwdrivers to tighten up a screw.

(2) background technology:

The kind of screwdriver is a feast for the eyes on the market at present, and not only profile has nothing in common with each other, and function also pursues variation.But great majority are a kind of screwdrivers of can only be disposable twisting a screw, and the mode of twisting all is to twist by three fingers basically.

The shortcoming of described conventional screwdriver is:

1, on service efficiency, owing to once can only twist a screw, so efficient is not high.

2, on occupation mode, great majority all are the screwdrivers of vertical type, and this screwdriver all is to tighten or unscrew screw by three fingers basically, from the force analysis angle as can be known, because moment is little, so use relatively effort.

3, on the scope of application, a lot of screwdrivers all cannot be changed different driver bits, and the scope of application significantly reduces.

(3) utility model content:

At the deficiencies in the prior art, the purpose of this utility model has been to propose a kind ofly efficient, laborsaving, easy and simple to handle can twist two or two reinforcement screwdrivers to tighten up a screw simultaneously.

Twist two or two reinforcement screwdrivers to tighten up a screw when above-mentioned purpose can be realized, comprise driver bit and operation spanner, unlike the prior art be also to comprise gear ratchet group and connecting rod, described gear ratchet group is made of ratchet and two or more powershift gear that adds, describedly respectively add the engagement of powershift gear and ratchet external toothing, the ratchet shaft of ratchet inner ring is connected with the operation spanner, the connecting rod corresponding with afterburning gear quantity is located between the gear shaft and ratchet shaft that respectively adds powershift gear, the connecting hole that the connecting rod two ends are offered interlocks with ratchet shaft and corresponding gear shaft respectively, and described driver bit is located on the homonymy axle head of each gear shaft.

Move the operation spanner with the opposite direction that ratchet skids, rotate simultaneously by the ratchet external toothing and respectively add powershift gear, each afterburning gear driven driver bit realizes that two or two are with tightening of tightening up a screw; Can make the driver bit centering screw position that respectively adds on the powershift gear by the angle that changes between connecting rod according to the difference of screw position.

For adapting to tightening of different screws, the set-up mode of described driver bit can adopt split-type structural, being driver bit is plugged in tool tip (install firm also can conveniently take out) with interference fits, described tool tip is located at the axle head of gear shaft, only need change different driver bits corresponding to different screws and get final product.

Described driver bit has " one " prefix, " ten " prefix, " △ " type head, hexagon socket head and the first-class various ways of outer-hexagonal that adapts to different screws.

Driver bit in the face of screw, is made as the screw tightening direction with the direction that rotates counterclockwise of operating spanner, and this rotation direction is opposite with the direction of skidding of ratchet, then adds the rotation of powershift gear for clockwise, adapts to the rotation direction of tightening of normal screws.

Advantage of the present utility model:

1, the utility model is twisted two or two simultaneously the position between each driver bit can be regulated with in the reinforcement screwdriver of tightening up a screw, and conveniently makes corresponding adjusting according to the screw position of diverse location.

2, only with hand is pulled the operation spanner in the utility model, and two or more driver bits are rotated by same direction, thereby tightens or unclamp screw; Because pull force much larger than the power of twisting of finger, also utilizes the operation spanner to increase moment simultaneously, thereby has reached the effect of reinforcement.

3, the utility model adopts split type driver bit, has overcome to change the shortcoming of the screwdriver of driver bit more on the market, thereby has strengthened the usage range of this money screwdriver greatly.

(4) description of drawings:

Fig. 1 is the structural representation of a kind of embodiment of the utility model.

Fig. 2 (a) is among Fig. 1, and driver bit separates with tool tip.

Fig. 2 (b) is among Fig. 1, and driver bit and tool tip plug together.

Figure number sign: 1, driver bit; 2, operation spanner; 3, connecting rod; 4, add powershift gear; 5, ratchet external toothing; 6, ratchet inner ring; 7, tool tip.

(5) specific embodiment:

Below in conjunction with accompanying drawing the technical solution of the utility model is described in further detail.

The utility model is twisted two or two simultaneously and is mainly added powershift gear 4, two driver bits 1 and a ratchet and constituted by operation spanner 2, two connecting rods 3, two with the reinforcement screwdriver of tightening up a screw.

Described ratchet is made of ratchet external toothing 5 and ratchet inner ring 6, one-directional rotation between described ratchet external toothing 5 and the ratchet inner ring 6, and the ratchet shaft of described ratchet inner ring 6 is fixedlyed connected with the fork-shaped front end of operation spanner 2; Two add

powershift gear

4 and 5 engagements of ratchet external toothing, and two connecting rods 3 are located between the ratchet shaft of the gear shaft that respectively adds powershift gear 4 and ratchet inner ring 6, and the connecting hole that connecting rod 3 two ends are offered interlocks with gear shaft and ratchet shaft respectively, as shown in Figure 1.

Hexagonal recess formed tool tip 7 in the same side of described gear shaft was offered, the afterbody of described driver bit 1 is the hexagonal column cap, the front portion is " one " prefix or " ten " prefix or " △ " type head or hexagon socket head or outer-hexagonal head, the hexagonal column cap of driver bit 1 afterbody and tool tip 7 are pegged graft, fit system does not drop out the interference fits of tool tip 7 for guaranteeing driver bit 1, shown in Fig. 2 (a), Fig. 2 (b).

Driver bit 1 is in the face of screw, regulating two positions that add between the powershift gear 4 makes it just corresponding to the two-screw position, the tightening direction that is made as the utility model screwdriver that rotates counterclockwise with operation spanner 2, this rotation direction is opposite with the direction of skidding of ratchet, namely operate spanner 2 and drive 5 rotations of ratchet external toothing by ratchet inner ring 6, then two add powershift gear 4 and clockwise rotate, and then add powershift gear 4 and drive driver bits 1 tighten the screws, as shown in Figure 1.

When present position, two-screw position changes, can be by regulating the angle between two connecting rods 3, and make the position of two-screw cutter head 1 just corresponding to the two-screw position, as shown in Figure 1.

When needs are twisted different screw, only need suitable driver bit 1 is installed in tool tip 7 interior getting final product.

When needs unclamp screw, can use another secondary screwdriver, this screwdriver is similar substantially to the utility model screwdriver, just pulls operation spanner 2 clockwise and can reach the purpose of unclamping screw.

Claims

1. twist two or two reinforcement screwdrivers to tighten up a screw simultaneously, comprise driver bit (1) and operation spanner (2), it is characterized in that: also comprise gear ratchet group and connecting rod (3), described gear ratchet group is made of ratchet and two or more powershift gear (4) that adds, the described powershift gear (4) that respectively adds meshes with ratchet external toothing (5), the ratchet shaft of ratchet inner ring (6) is connected with operation spanner (2), the connecting rod (3) corresponding with adding powershift gear (4) quantity is located between the gear shaft and ratchet shaft that respectively adds powershift gear (4), the connecting hole at connecting rod (3) two ends interlocks with ratchet shaft and corresponding gear shaft respectively, and described driver bit (1) is located on the homonymy axle head of each gear shaft.

2. according to claim 1ly twist two or two reinforcement screwdrivers to tighten up a screw simultaneously, it is characterized in that: the set-up mode of described driver bit (1) adopts split-type structural, be that driver bit (1) is plugged in tool tip (7) with interference fits, described tool tip (7) is located at the axle head of gear shaft.

3. according to claim 2ly twist two or two reinforcement screwdrivers to tighten up a screw simultaneously, it is characterized in that: described driver bit (1) is for adapting to " one " prefix, " ten " prefix, " △ " type head, hexagon socket head and the outer-hexagonal head of different screws.

4. according to any described stubborn two or two reinforcement screwdrivers to tighten up a screw simultaneously in the claim 1～3, it is characterized in that: the direction that rotates counterclockwise of described operation spanner (2) is made as the screw tightening direction, and this rotation direction is opposite with the direction of skidding of ratchet.