Unlock instant, AI-driven research and patent intelligence for your innovation.

Spanner for narrow space

A wrench, narrow technology, applied in the field of torque transmission operation, which can solve problems such as narrowing of width, reduction of compressive strength of teeth, cracking of teeth, etc.

Active Publication Date: 2015-07-01
吴逸民
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a wrench is difficult to use in some workplaces, especially construction sites with narrow operating spaces.
[0004] In order to solve the above-mentioned problems, some practitioners proposed a method, which is to increase the number of teeth on the outside of the gear. Although it overcomes the shortcomings of the existing technology related to excessive idling, it also creates a new problem: the width of the teeth is narrowed, Relative compressive strength of reduced teeth
The reason is that during the synchronous rotation of the gear driven by the head, the torque exceeds the pressure on the teeth, which is prone to tooth cracking, and the kinetic energy cannot be transmitted to the workpiece, so naturally the output torque cannot continue

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spanner for narrow space
  • Spanner for narrow space
  • Spanner for narrow space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] see figure 1 , to set forth the specific structure of the wrench 10. This wrench 10 includes a body 11, the body 11 has a grip portion 12, the grip portion 12 is integrated with a head 20, a cover 50 is placed above the head 20, and a gear 30 and a dial 60 are installed between the two. . At this moment, the toggle button 60 is in a narrow space mode and can be switched to a normal space mode.

[0037] From figure 2 It can be seen that the head 20 is a flat annular shell, which is located at one end of the grip portion 12 , and a C-shaped wall 21 stands outside the head 20 . Different thicknesses are formed from the top of the surrounding wall 21 to the bottom of the housing, so that a stepped hole 22 for the aforementioned gear 30 is formed in the head 20 .

[0038] The surface of the holding portion 12 sinks into a first guide groove 13 and a second guiding groove 14. These guide grooves 13, 14 form a certain angle with each other. It communicates with the stepp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a spanner; a holding part is connected with a hollow head; a gear and multiple engagement components are mounted in the head; and the head can be shielded by a covering piece of sealing the top of the head. The spanner further has a poking button; and the poking button determines the engagement components to perform a general space mode or a narrow space mode. When the poking button is shifted to the general space mode, single engagement component is kept in a normal engagement relationship with the gear, and the spanner swings with a standard idle angle. When the poking button is shifted to the narrow space mode, the engagement components are engaged with the gear in turns, and the spanner swings with a smaller idle angle.

Description

technical field [0001] The invention relates to the field of idling of a wrench, in particular to a wrench that can select a standard or smaller idling angle to perform a torque transmission operation under the condition that the number of teeth remains unchanged. Background technique [0002] A wrench is usually equipped with a gear on a hollow head, and there is a roughly claw-shaped locking structure inside the head, which can engage the teeth on the outside of the gear, determine the one-way idling of the head around the gear, and drive the gear to rotate synchronously in the reverse direction. output torque. In this way, the wrench drives the gears to rotate synchronously with the head, and when it reaches a certain range, it must rotate in reverse to continue to apply force. [0003] However, the number of teeth of the gear is constant, so the idle angle is just the magnitude by which the catch structure passes over the teeth. Therefore, the idling angle of the gear ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B25B13/46
CPCB25B13/462B25B13/481
Inventor 吴逸民
Owner 吴逸民