Anchor Setting Tool Retainer for Vibration-Stable Hammer Unit Locking
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Solution Overview
Problem
Conventional anchor setting tools face difficulties in achieving smooth attachment and detachment of the hammering unit to the drill unit and maintaining a reliable attachment, due to weak engagement forces and axial vibrations causing detachment during hammering operations.
Innovation Solution
The anchor setting tool incorporates a retainer unit with a main part and a locked part that allows radially outward elastic deformation, enabling smooth attachment and detachment of the hammering unit by displacing the locked part from the lock position to a retraction position, and securing it back with an elastic restoring force for axial contact and locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the C-ring is given a small inner diameter to increase engagement force, then the reliability of attachment is improved, but the ease of operation for attachment and detachment deteriorates
Solution Approach 1:
The C-ring is divided into two functional parts: a main part with a relatively large inner diameter for easy insertion and removal, and a locked part that protrudes radially inward to provide strong engagement force. This segmentation allows each part to optimize its function independently, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
Different parts of the C-ring are given different properties: the main part has larger diameter for smooth operation, while the locked part has smaller effective diameter for strong engagement. This local differentiation of properties allows the C-ring to simultaneously achieve ease of operation and reliable attachment.
2Ease of operation
If the C-ring is given a large inner diameter for easy insertion, then the ease of operation is improved, but the reliability of attachment deteriorates due to weak engagement force
Solution Approach 1:
The C-ring is divided into two functional parts: a main part with a relatively large inner diameter for easy insertion and removal, and a locked part that protrudes radially inward to provide strong engagement force. This segmentation allows each part to optimize its function independently, resolving the contradiction between ease of operation and reliability.
Solution Approach 2:
Different parts of the C-ring are given different properties: the main part has larger diameter for smooth operation, while the locked part has smaller effective diameter for strong engagement. This local differentiation of properties allows the C-ring to simultaneously achieve ease of operation and reliable attachment.
3Reliability
If the hammering unit is strongly retained to prevent detachment during hammering, then the reliability is improved, but the ease of operation for detachment deteriorates
Solution Approach 1:
The C-ring is designed as an elastic component that dynamically adjusts its state: during attachment it deforms elastically to allow easy insertion, then locks into place providing strong retention. During detachment, the elastic deformation is reversed to release the lock. This dynamic behavior resolves the contradiction between strong retention and easy detachment.
Solution Approach 2:
The C-ring utilizes elastic deformation to change its dimensional parameters temporarily during attachment and detachment operations, then restores to its original state for reliable retention. This parameter change through elastic deformation allows easy operation during transient states while maintaining strong retention during stable operation.
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
This design ensures reliable attachment and easy detachment of the hammering unit, preventing it from falling during repetitive strikes and maintaining stability even under axial vibrations, while allowing for efficient anchor setting operations.
Implementation Method 1
the main part of the retainer unit (302) is elastically deformable in a diameter increasing direction as to increase the diameter of the main part (302)
Implementation Method 2
when the locked part (303) is returned to the lock position by an elastic restoring force of the main part (302)
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Provided is an anchor setting tool capable of smooth attachment and detachment of a hammering unit with respect to a drill unit and keeping reliable attached state of the hammering unit. The anchor setting tool includes a drill unit (10), a hammering unit (20) detachably attached on the drill unit (10), and a retainer unit (30) attached to the hammering unit (20). The drill unit (10) includes a first fitting part (13). The hammering unit (20) includes a second fitting part (23) for receiving the inserted first fitting part (13). The second fitting part (23) has an locked-part hole (26) allowing a locked part (33) of the retainer unit (30) to protrude inside the second fitting part (23). The first fitting part (13) has a locking portion (13b) making axial contact with the locked part (33). The retainer unit (30) includes a main part (32) elastically deformable to displace the locked part (33) radially outward from a lock position to a retraction position.