Adjustable Torque Wrench with Segmented Cover Plates for Narrow Spaces
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Solution Overview
Problem
Traditional wrenches are inconvenient for use in narrow spaces, as they cannot be easily rotated to tighten or loosen screws due to their design, making operations in confined areas challenging.
Innovation Solution
A torque-adjustable wrench with an elongated upper and lower cover plate configuration, featuring a screw pre-tightening mechanism at one end and an adjustable screw locking mechanism at the other, allowing for screw mounting and dismounting in narrow spaces by utilizing a large gear, pinion, adjustment wheel, and set screw to achieve the required torque.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a traditional wrench with a long handle is used, then the torque application capability is improved, but the wrench cannot be rotated in narrow spaces
Solution Approach 1:
The wrench is divided into two main cover plates (upper and lower) that form a compact structure, with the handle function segmented into a rotating arm that can pivot within a limited space. This segmentation allows the torque application function to be separated from the rotation function, enabling operation in narrow spaces while maintaining torque capability.
Solution Approach 2:
The wrench incorporates a dynamic rotating arm that can change its orientation and a spring mechanism that provides adjustable pre-tightening force. The rotating arm can pivot dynamically within the narrow space constraint, and the spring force can be adjusted to maintain effective torque application despite spatial limitations.
2Ease of operation
If a compact wrench structure is used for narrow spaces, then the ease of operation in confined areas is improved, but the torque adjustment capability is reduced
Solution Approach 1:
The spring mechanism provides dynamically adjustable pre-tightening force that can be modified during operation. The spring can be compressed to different degrees, allowing the torque capability to be adapted to different fastening requirements while maintaining the compact structure suitable for narrow spaces.
Solution Approach 2:
The wrench allows for parameter changes in the spring pre-tightening force and the rotation angle of the arm. By adjusting these parameters, the torque application capability can be varied to suit different fastening needs, maintaining versatility within the compact design.
3Device complexity
If a simple wrench structure is used, then the device complexity is reduced, but the torque control precision is insufficient
Solution Approach 1:
The spring mechanism provides a feedback mechanism where the pre-tightening force automatically adjusts based on the fastening state. As the screw is tightened, the spring compression changes, providing tactile feedback and automatic torque control without requiring complex measurement instruments.
Solution Approach 2:
The spring mechanism serves itself by automatically providing the necessary pre-tightening force and torque control. The elastic properties of the spring inherently regulate the force application, eliminating the need for complex external control systems while maintaining precise torque control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The wrench enables convenient screw mounting and dismounting in narrow spaces by allowing for adjustable torque settings, ensuring the screw is securely fastened with the desired torque value, facilitating operations in confined areas.
Implementation Method 1
a spring (12) sleeved on the screw rod (14)
Implementation Method 2
a through hole is formed on the clamping piece (3) opposite the inner threaded hole; a first end of a screw rod (14) passes through the through hole and is in threaded connection with the inner threaded hole
Implementation Method 3
the large gear (6) transmits power to the connecting gear (17) by the pinion (7)
Implementation Method 4
the right ends of the screw rod (14) and the spring (12) are in contact with a left end face of the push rod (11)
Data Source
AI summary
Disclosed is a torque-adjustable wrench for a narrow space. The present disclosure relates to the technical field of assembly tools. The wrench comprises an elongated upper cover plate and an elongated lower cover plate, the space between the upper cover plate and the lower cover plate forms a mounting space, one end of the mounting space is provided with a screw pre-tightening mechanism, and the other end of the mounting space is provided with an adjustable screw locking mechanism. During use of the wrench, first, the screw pre-tightening mechanism is used to pre-tighten a screw to be assembled, and then the adjustable screw locking mechanism is used to perform locking operation on the pre-tightened screw. By means of the wrench, the mounting and dismounting of a screw in a narrow space can be conveniently achieved.