CN2106044U

CN2106044U - Screwdriver with adjustable impact

Info

Publication number: CN2106044U
Application number: CN 91230892
Authority: CN
Inventors: 汤建华
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-11-04
Filing date: 1991-11-04
Publication date: 1992-06-03

Abstract

The utility model relates to a screwdriver with movable casing tube which belongs to a hand tool. A movable casing tube is sleeved outside a tool bar; the inner side of the front end of the casing tube is provided with a spring tab for holding a screw cap; an inner sleeve with a chute is arranged in the middle part of the tube intracavity wall; a compressed spring sleeved on the tool bar is arranged in the casing tube intracavity below the inner sleeve; a chute dowel and a solid-stopping dowel of the compressed spring which are matched with the inner sleeve chute are arranged on the screwdriver bar. The utility model has the advantages of simple structure, convenient operation, high safety. While fixing or disassembling a screw, the screwdriver is of no chute slide, no screw drop and no screw knife-edge groove damage, and in particular while operating under the occasions of high level, underground, electrification and insertion in the interior of equipment, etc., the screwdriver can be operated by one hand.

Description

Screwdriver with adjustable impact

A kind of moving casing screwdriver is to be used for hand tools fastening, that connect, dismantle.

A word or cross screwdriver commonly used at present, when fastening and dismounting screw, often to help screw on the other hand, proficiency turn screwdriver, and in operating process, firmly incorrect slightly, the very easy screw edge of a knife that causes skids off screw cutter groove, or damage screw cutter groove, even injure the finger of helping screw, and screw is fallen.Particularly under stretching into device interior operation, high-altitude, down-hole, occasion such as charged, during operation, manipulate difficulty especially.Though someone has designed the screwdriver of magnetic screw driver and claw hook, magnetic screw driver and is unsuitable for the nonferromagnetic screw to the sticking of screw built on the sand, should not be used to avoid the instrument and equipment of magnetic; The screwdriver of claw hook then exists structure than shortcomings such as complexity, and all can not overcome the disadvantage that the screw edge of a knife skids off screw cutter groove.

The purpose of this utility model is for overcoming the shortcoming of above-mentioned screwdriver, and when a kind of fastening and dismounting screw is provided, does not need the crew-served moving casing screwdriver of both hands.It is simple in structure, safety easy to use, and the clamping screw is firm, and during operation, the screw edge of a knife can not skid off from the cutter groove of screw, not fragile screw cutter groove.

Technical solution of the present utility model is: at the knife bar outside of the normal screws cutter that is made of knife bar, handle cover one sleeve pipe, the spring leaf of clamp screws cap is equipped with in the front end inboard of this sleeve pipe, the middle part wall of the lumen is provided with the internal chute cover that internal diameter is slightly larger than the knife bar external diameter, internal chute puts and has axially, two chutes of 180 ° of symmetries, in the casing cavity below the internal chute cover, the stage clip that is placed on the knife bar is housed, is fixed with the chute pin and the ending of stage clip of matching on the knife bar and consolidates pin with chute.

Accompanying drawing 1 is the utility model structural representation.

Accompanying drawing 2 is the utility model user mode structural representation.

Accompanying drawing 3 is the example structure schematic diagram of sleeve pipe (8).

The utility model is elaborated with embodiment below in conjunction with accompanying drawing.

Knife bar (2) is made with the instrument steel, and handle (12) is made by plastics or wood.Be placed in the sleeve pipe (8) of knife bar (2) outside, and be positioned at its intraluminal internal chute cover (7) that has two symmetrical chutes (13) in middle part, can make respectively, then welding or be bonded to one with high-strength adhesive of metal material; Also can adopt plastics once molding formed.Upward slip is more steady at knife bar (2) for sleeve pipe (8), can load onto the end inner ring (11) that an internal diameter is slightly larger than knife bar (2) external diameter at the end of sleeve pipe (8).General uniform 3-4 flat spring sheet (4) on sleeve pipe (8) front inner wall, with the fixing one end of welding or riveted joint, bonding method, also can be earlier an end of spring leaf (4) be fixed in earlier on the circle frame (5), will encloses frame (5) again and be fixed on sleeve pipe (8) front inner wall.Also can offer several the slotted eyes (16) that can hold corresponding bullet pornographic movie (4) on the front end tube wall of sleeve pipe (8), so that spring leaf (4) has the bigger bullet leeway of contracting.During assembling, earlier stage clip (9) is inserted in knife bar (2) middle and lower part, then stage clip (9) lower end is fixed on the knife bar (2) with only consolidating pin or jump ring (10), can be inserted in knife bar (2) to the sleeve pipe (8) that assembles end inner ring (11), internal chute cover (7), spring leaf (4) subsequently.Following pushing sleeve pipe (8), make the chute pin hole on chute pin hole (17) the aligning knife bar of offering on sleeve pipe (8) front portion (2), knock in chute pin (6), the length of this pin (6) greater than the internal diameter of internal chute cover (7) less than the internal diameter of sleeve pipe (8).Also can overlap upper jacket (3) at last, with spring leaf slotted eye (16) and the chute pin hole (17) that covers in sleeve pipe (8) leading section.

The utility model is simple in structure, and is easy to use.Operate as the spinning screw, as long as between the spring leaf (4) of the cap head (15) of screw (14) insertion sleeve pipe (8) inboard, end (as accompanying drawing 2), the operator can hold screwdriver handle (12) by one hand, no matter be in face upward the position or bow the position all can make screw to going into screw easily, advance screwdriver and rotation then, the screw edge of a knife (1) promptly enters screw cutter groove automatically.In the turn process because screw cap head (15) and the screw edge of a knife (1) all be enclosed within the sleeve pipe (8), so the screw edge of a knife (1) will be not can chute, just can not damage screw cutter groove yet, safe and reliable.Dismounting screw operation is then more convenient, desires to tear open screw cap as long as sleeve pipe (8) port covered, and press the lower handle turn thereafter and get final product, and after screw screwed out, screw cap was clamped in the spring leaf (4) of sleeve pipe (8), can and can not drop with the screwdriver taking-up.The utility model also can be used as the normal screws cutter and uses, this moment is as long as pushing sleeve pipe (8) to handle (12) offsets and rotates 90 ° down, chute pin (6) promptly skids off chute (13), cross locking is in the top of internal chute cover (7), so the blade portion of knife bar (1) promptly stretches out in outside the sleeve pipe (8), become a normal screws cutter (as accompanying drawing 1).

Claims

1, a kind of moving casing screwdriver, has knife bar (2), handle (12), the outside that it is characterized in that knife bar (2) is with sleeve pipe (8), the spring leaf (4) of clamping screw is equipped with in the front end inboard of sleeve pipe (8), the middle part wall of the lumen is provided with the internal chute cover (7) that internal diameter is slightly larger than knife bar (2) external diameter, have on this internal chute cover (7) axially, two chutes (13) of 180 ° of symmetries, in the casing cavity below internal chute cover (7), the stage clip (9) that is placed on the knife bar (2) is housed, is fixed with the chute pin (6) and the ending of stage clip (9) of matching on the knife bar (2) and consolidates pin (10) with chute (13).

2, by the described moving casing screwdriver of claim 1, it is characterized in that the end of sleeve pipe (8) is equipped with the end inner ring (11) that an internal diameter is slightly larger than knife bar (2) external diameter.

3, by claim 1 or 2 described moving casing screwdrivers, it is characterized in that an end of spring leaf (4) is fixed on the circle frame (5), circle frame (5) then is fixed on sleeve pipe (8) front inner wall.

4,, it is characterized in that offering the slotted eye (16) that holds respective springs sheet (4) on the front end tube wall of sleeve pipe (8) by the described moving casing screwdriver of claim 3.

5,, it is characterized in that sleeve pipe (8) front end also is with the sheath (3) that hides spring leaf slotted eye (16) and chute pin hole (17) by the described moving casing screwdriver of claim 4.