Golf Club Head Slit Insert Retention and Noise Reduction
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Solution Overview
Problem
Existing golf club head designs struggle to increase the launch angle of the ball while preventing interference between slit walls at impact, which can result in unwanted noise and failure to maintain the insert within the slit.
Innovation Solution
A golf club head with a slit in the upper portion of the back side of the face portion that extends toward the bottom portion, featuring an intermediate member that abuts against one wall surface and a fixing member to secure it from the opposing wall surface, preventing interference and maintaining the insert within the slit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a slit is formed in the head upper portion to increase launch angle, then the launch angle of the ball is increased, but the front and back wall surfaces of the slit knock against each other at impact producing strange sound
Solution Approach 1:
An intermediate member is inserted into the slit to act as a mediator between the front and back wall surfaces. This intermediate member prevents direct contact and collision between the walls during impact, thereby eliminating the strange noise while preserving the slit's function of increasing launch angle through face portion tilting.
2Object-generated harmful factors
If an insert is placed inside the slit to prevent wall collision, then noise is reduced, but the insert may not be appropriately held within the slit causing intended function to fail
Solution Approach 1:
The retention system is segmented into multiple functional components: a retention member with retention protrusions that engage with retention grooves on the intermediate member, and a fixing member that secures the assembly from the back side. This segmentation ensures reliable insert retention through multiple mechanical engagement points.
Solution Approach 2:
The retention protrusions and grooves are pre-configured on the intermediate member before insertion into the slit. This preliminary configuration ensures that when the intermediate member is installed, it is automatically retained in the correct position, preventing displacement and ensuring reliable function from the outset.
3Speed
If the slit is formed deeper toward the head bottom portion to increase loft, then the launch angle is further increased, but the risk of wall interference and insert displacement increases
Solution Approach 1:
The retention mechanism extends into the depth dimension of the slit, with retention protrusions and grooves positioned along the longitudinal axis. The fixing member further secures the intermediate member from the rear, creating a three-dimensional retention system that stabilizes the insert even in deeper slits where launch angle benefits are maximized.
Data Source
AI summary
A golf club head that includes a head upper portion, a head bottom portion and a face portion between the head upper portion and the head bottom portion is provided with a slit that is open in the head upper portion on a back side of the face portion, extends in a toe-heel direction and is formed toward the head bottom portion, an intermediate member configured to be provided in the slit and abut against a first wall surface on the face portion side that defines the slit, and a fixing member configured to fix the intermediate member from a side of a second wall surface on the back side that is separated from the first wall surface and defines the slit.