Slide Hammer Device for Vehicle Frame Straightening
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Solution Overview
Problem
Existing methods for reshaping and straightening vehicle body frames require significant manual labor, especially in hard-to-reach locations, and result in discomfort and fatigue due to the transmission of impact force back through the user's hands and arms.
Innovation Solution
A slide hammer device comprising a guide sleeve, a plunger or drive bar, and an impact head, which allows for controlled application of force to a targeted object by minimizing reaction force transmission and enabling both hammering/compression and tension/withdrawal forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a hammer and chisel are used to apply force to a targeted object, then the force can be applied to reshape and straighten vehicle body frames, but the reaction force is transmitted back through the user's hands and arms causing pain and discomfort
Solution Approach 1:
The patent introduces a slide hammer device as an intermediary tool between the user and the targeted object. The slide hammer comprises a handle, a slide member, and an impact member that can be detached. This intermediary device allows the user to apply force without directly transmitting the reaction force back through their hands and arms, thereby reducing pain and discomfort while maintaining force application capability.
Solution Approach 2:
The slide hammer is divided into separable components: a handle portion, a slide member, and an impact member. The impact member can be detached from the slide member, allowing the user to replace different impact members for different applications. This segmentation enables the device to provide force application capability while isolating the user from direct reaction force transmission.
2Manufacturing precision
If a hammer and chisel are used for frame straightening, then manual force can be applied to achieve exact reshaping, but the hammer must be swung with great force making it dangerous
Solution Approach 1:
The slide hammer serves as a controlled intermediary device that replaces the traditional hammer. The slide member can be moved along the handle with controlled force, and the impact member can be detached and replaced. This controlled mechanism reduces the swinging motion that creates safety risks while maintaining the precision needed for frame straightening.
Solution Approach 2:
The slide hammer incorporates a dynamic sliding mechanism where the slide member can move along the handle and be positioned at different locations. The impact member can be dynamically attached or detached. This dynamic design allows precise control of force application while eliminating the uncontrolled swinging motion that creates safety hazards with traditional hammers.
3Force
If pneumatic or hydraulic machines are used for frame straightening, then mechanical force can be applied, but they cannot be positioned to provide necessary directed force at hard-to-reach locations
Solution Approach 1:
The slide hammer is segmented into a handle portion and a slide member that can be separated. The impact member can also be detached. This segmentation makes the device lightweight and easy to maneuver to hard-to-reach locations on vehicle frames, while still providing sufficient mechanical force through the controlled sliding mechanism.
Solution Approach 2:
The slide hammer acts as a portable intermediary device that bridges the gap between manual tools and large pneumatic/hydraulic machines. It provides directed mechanical force that can be applied at hard-to-reach locations where the larger machines cannot be positioned, while remaining easy enough to handle and maneuver.
4Device complexity
If a slide hammer device is designed with fixed end tips, then the structure is simple, but it cannot adapt to different applications requiring varying force types
Solution Approach 1:
The slide hammer is segmented into a handle, a slide member, and a detachable impact member. This segmentation allows the impact member to be removed and replaced with different types (e.g., ball peen, flat, pointed) to adapt to different applications. The base structure remains simple, while the detachable component provides versatility.
Solution Approach 2:
The slide hammer is designed with a universal handle and slide member that can accommodate multiple types of impact members. The detachable impact member allows a single device to perform multiple functions (hammering, compression, tension) by simply changing the impact member, thereby achieving multi-functionality without significantly increasing overall device complexity.
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 slide hammer device reduces user discomfort and fatigue by minimizing reaction force, allows for precise and controlled force application, and is adaptable for various applications through removable end tips and adjustable weights.
Implementation Method 1
a spring can be used to dampen contact of the drive bar against the impact head
Data Source
AI summary
A slide and pull hammer device includes three major components, namely, a guide sleeve, a drive bar and an impact head. The drive bar is inserted within the guide sleeve. The impact head is secured within the distal end of the guide sleeve, and has a portion which protrudes beyond the guide sleeve distal end. The drive bar is operable to impact both a distal end and a proximal end of the guide sleeve to apply force to objects in at least two opposite force directions. One force applied by the device includes a hammering or compression force, and another force applied by the device includes a tension or withdrawing force.