CN201511331U - Screwdriver - Google Patents

Abstract

A screwdriver belongs to the technical field of manual tools. Traditional screwdrivers have bigger cutter body volume and exposed cutter bodies, and have inconvenient transportation factors. The screwdriver has a screwdriver head, and is characterized in that the screwdriver head is arranged in a shell whose opening diameter is matched with the diameter of the screwdriver head, the rear end of the screwdriver head is connected with a front pushing bar, the front end and the rear end are respectively pressed on the opening of the shell and are respectively sleeved on the screwdriver head outside the shell with a spring on the front pushing bar end surface, the terminal end of the front pushing bar is matched and connected with a rear pushing bar with a plurality of pushing gears, the rear end of the rear pushing bar is connected with a pressing head outside the shell, and the screwdriver has the advantages of reasonable structure, small volume, convenient transportation, convenient force application when in use, flexible flex of the screwdriver head and excellent product adaptability.

Description

Screwdriver

[technical field]

The utility model relates to a kind of screwdriver, belongs to the hand-operated tools technical field.

[background technology]

Screwdriver is to be used for a kind ofly being used for twisting screw to force its instrument in place.It has a thin sphenoid bur usually, can insert in the line of rabbet joint of screw cap or the recess also to claim Pull mire ladder, mainly contains two kinds of a word (negative sign) and crosses (positive sign).Traditional screwdriver volume is bigger, and cutter head exposes, and has the inconvenient factor of carrying.

[utility model content]

The technical assignment of the technical problems to be solved in the utility model and proposition is the defective that overcomes prior art, provides that a kind of volume is small and exquisite, cutter head can bounce back, is easy to carry, screwdriver easy to use.For this reason, the utility model adopts following technical scheme:

Screwdriver, comprise driver bit, it is characterized in that described driver bit is built in is provided with in the housing that opening diameter and its diameter match, the driver bit rear end is connected with preceding catch bar, the spring housing that one front and back ends is against shell nozzle and preceding catch bar end face respectively is connected on the driver bit, preceding catch bar end connects in a back catch bar with some propelling teeth, and the back rod rear end that promotes is connected with housing press head outward.Used the design feature of existing telescopic ball-point pen, be linked in sequence, realized manually stretching, solved the problem that cutter head exposes when carrying by the pressure-controlled cutter head by press head, front and back catch bar, spring and housing and driver bit.

Also comprise and be actively socketed on the outer power-assisted handle of housing.This design meets the application of force requirement of people when using screwdriver, has solved screwdriver because the application of force inconvenience problem that volume causes for a short time.

The utility model is rational in infrastructure, and volume is little, is easy to carry, and is convenient to the application of force during use, and cutter head is capable of expansion and contraction, and the adaptation of product is good.

[description of drawings]

Fig. 1 is a blast structural representation of the present utility model;

Fig. 2 is a structural representation of the present utility model;

Fig. 3 is a plan structure schematic diagram of the present utility model.

Among the figure: 1, power-assisted handle, 2, housing, 3, press head, 4, the back catch bar, 5, preceding catch bar, 6, driver bit, 7, spring, 8, advance tooth.

[specific embodiment]

Below in conjunction with specification drawings and specific embodiments substantive distinguishing features of the present utility model is further described.

Show as Fig. 1, screwdriver, comprise driver bit 6, driver bit is built in and is provided with in the housing 2 that opening diameter and its diameter match, the driver bit rear end is connected with preceding catch bar 5, the spring 7 that one front and back ends is against shell nozzle and preceding catch bar end face respectively is socketed on the driver bit, and preceding catch bar end connects in a back catch bar 4 with some propelling teeth 8, and the back rod rear end that promotes is connected with housing press head 3 outward.Also comprise and be actively socketed on the outer power-assisted handle of housing.

More than screwdriver shown in the drawings be specific embodiment of the utility model, the utility model substantive distinguishing features and progress have been embodied, can carry out the modification of aspects such as size, color, specification, material to it according to the use needs of reality, seldom give unnecessary details at this.

Claims (2)

1. screwdriver, comprise driver bit (6), it is characterized in that described driver bit is built in is provided with in the housing (2) that opening diameter and its diameter match, the driver bit rear end is connected with preceding catch bar (5), the spring (7) that one front and back ends is against shell nozzle and preceding catch bar end face respectively is socketed on the driver bit, preceding catch bar end connects in a back catch bar (4) with some propelling teeth (8), and the back rod rear end that promotes is connected with housing press head (3) outward.

2. screwdriver according to claim 1 is characterized in that also comprising the power-assisted handle (1) that is actively socketed on outside the housing.

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