CN204382154U

CN204382154U - A kind of labour-saving ratchet spanner

Info

Publication number: CN204382154U
Application number: CN201520027137.6U
Authority: CN
Inventors: 陈广庆; 马传凯; 马官国; 王峰
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2015-01-15
Filing date: 2015-01-15
Publication date: 2015-06-10
Anticipated expiration: 2025-01-15

Abstract

A kind of labour-saving ratchet spanner, comprise handle, ratchet, ratchet, torque spring, shell and driving end, handle is T-shape, and the two ends of handle head are respectively by pinned connection ratchet, and the head of two ratchets is stuck on the tooth of ratchet; Have a square opening in the middle of ratchet, ratchet is linked together by bearing and shell, and the centre of handle head has a jackshaft to be connected with shell, is provided with torque spring between the upper end jackshaft of handle and shell; In use, no matter handle to which direction swings the utility model, and ratchet all can drive nut to rotate to same direction, simple to operate laborsaving.

Description

A kind of labour-saving ratchet spanner

Technical field

The utility model designs a kind of hardware & tools, especially a kind of labour-saving ratchet spanner.

Background technology

Be often need constantly repeatedly to pick and place spanner by common wrench at the installation and removal space-constrained nut such as crack or bolt, not only require great effort, and efficiency be lower.Ratchet spanner popular on present market to some extent solves this problem, but existing ratchet spanner in the course of the work, and the backhaul of handle does not drive nut or screws, and labor-saving effect is not obvious.

As can be seen here, prior art awaits further improving.

Summary of the invention

The weak point that the utility model exists in order to avoid above-mentioned prior art, provides a kind of labour-saving ratchet spanner.

The technical solution adopted in the utility model is:

A kind of labour-saving ratchet spanner, comprise handle, ratchet, ratchet, torque spring, shell and driving end, it is characterized in that, described handle is T-shape, the two ends of handle head are all by pinned connection ratchet, the head of two ratchets is stuck on hook tooth, ratchet is linked together by the shell of bearing and ratchet spanner, the centre of handle head is fixed with a jackshaft, this jackshaft is arranged on shell, is respectively provided with a torque spring between jackshaft and upper lower casing simultaneously.

Have the hole that square in the middle of described ratchet, the square opening on the mount pad of different model driving end and ratchet is measure-alike.

Owing to have employed technique scheme, the beneficial effect acquired by the utility model is:

No matter 1. handle to which direction is pulled, ratchet all can rotate to a direction, drives bolt or nut to install or dismounting.

2. drive pawl wheel by ratchet, the arm of force of increase, play labour-saving effect.

3. between the bearing pin that the centre of handle head is fixing and upper lower casing, a torque spring is respectively installed, makes handle be positioned at centre position when not stressing, being easy to carry and placing.

Accompanying drawing explanation

Fig. 1 is the perspective view that the utility model partly cuts open shell.

Fig. 2 is the mounting structure schematic diagram of the utility model ratchet, ratchet and handle.

Fig. 3 is the structural representation of driving end.

1. handle 2. shell 3. bearing 4. ratchet 5. left pawl 6. right ratchet 7. jackshaft 8. bearing pin 9. torque spring 10. driving end.

Detailed description of the invention

As depicted in figs. 1 and 2, a kind of labour-saving ratchet spanner, comprise handle 1, shell 2, bearing 3, ratchet 4, left pawl 5, right ratchet 6, jackshaft 7, bearing pin 8, torque spring 9 and driving end 10, handle 1 is T-shape, the two ends of handle 1 head all connect left pawl 5 and right ratchet 6 by bearing pin 8, the head of two ratchets is stuck on the tooth of ratchet 4, ratchet 4 is linked together by the shell 2 of bearing 3 with ratchet spanner, the centre of handle 1 head is fixed with a jackshaft 7, jackshaft 7 is arranged on shell 2, between jackshaft 7 and upper lower casing, a torque spring 9 is respectively installed simultaneously.

As shown in Figure 1 to Figure 3, there is a square opening centre of ratchet 4, and on the mount pad of the driving end 10 of different model and ratchet, square opening is measure-alike.

The part do not addressed in the utility model adopts or uses for reference prior art and can realize.

In description of the present utility model, it will be appreciated that, term " lower end ", " upper end ", " rear end ", " on ", the orientation of the instruction such as D score, "front", "rear" or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.

Claims

1. a labour-saving ratchet spanner, comprise handle, ratchet, ratchet, torque spring, shell and driving end, it is characterized in that, described handle is T-shape, the two ends of handle head are all by pinned connection ratchet, and the head of two ratchets is stuck on the tooth of ratchet, and ratchet is linked together by the shell of bearing and spanner, the centre of handle head is fixed with a jackshaft, and this jackshaft is arranged on shell.

2. ratchet spanner according to claim 1, is characterized in that, is provided with torque spring between the bearing pin that described handle head is fixing and shell.

3. ratchet spanner according to claim 1, is characterized in that, has a square opening, can install the driving end of different model in the middle of described ratchet.