Gear Motor Thermal Path Through Stator-Core Connection Bolt
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Solution Overview
Problem
In gear motors, heat transfer losses occur due to the interposition of members like a stator core and a casing, hindering sufficient heat dissipation.
Innovation Solution
A gear motor design featuring a connection member, such as a long bolt, that directly contacts heat sources like the stator core and extends to a mating member, creating a heat path for efficient heat transfer and dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat transfer pin is provided to pass through a connection surface of a casing including a plurality of members, then heat of the speed reducer can be efficiently transmitted, but heat transfer loss is greatly affected at another member or boundary and sufficient heat dissipation cannot be performed
Solution Approach 1:
A heat transfer member is introduced as an intermediary component that directly contacts the stator core (heat source) and extends through the casing members to the exterior. This intermediary structure provides a dedicated thermal conduction path that bypasses the thermal resistance of intermediate casing members, enabling efficient heat transfer from the stator core to the external environment.
Solution Approach 2:
The heat transfer function is extracted from the general casing structure and concentrated into a dedicated heat transfer member. This separate component is specifically designed for thermal conduction, allowing it to directly contact the stator core and extend through the casing without being hindered by the thermal properties of intermediate casing members.
2Device complexity
If another member such as a casing is interposed between the stator core and the heat transfer pin, then structural assembly is achieved, but heat transfer loss is greatly affected and sufficient heat dissipation cannot be performed
Solution Approach 1:
The heat transfer member serves as a thermal intermediary that bridges the stator core and the external environment, providing a low-resistance thermal path that circumvents the heat blocking effect of intermediate casing members while maintaining the structural integrity of the multi-member casing assembly.
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 effectively suppresses temperature rises, maintains driving performance, and ensures efficient heat exhaustion by minimizing heat transfer losses at boundary surfaces.
Implementation Method 1
a connection member 27 that connects the members 11c to 11f, the first internal gear 15d, the second internal gear 15e, and the member 11g
Data Source
Figure 1
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AI summary
The present invention provides a gear motor (1, 1A) capable of effectively exhausting heat. The gear motor (1, 1A) in which a speed reducer (15) and a motor (12) are connected, includes a connection hole (11d5, 11e4, 11f1, 15d1, 11g2, 11h5) that is provided through a speed reducer casing (llg, 11h, 15d) and a motor casing (11f, 11e), and a connection member (27) that is disposed in the connection hole (11d5, 11e4, 11f1, 15d1, 11g2, 11h5) and connects the speed reducer casing (llg, 11h, 15d) and the motor casing (11f, 11e), in which the connection member (27) is in contact with a stator core (12a) of the motor (12) and reaches a casing (11h) of the speed reducer casing (llg, 11h, 15d) which is connected to a mating member (201, 202).