Improved structure of bimetallic strip
By adopting the design of plum blossom-shaped bimetallic sheet body and convex reinforcement ribs, the problems of material waste and inaccurate temperature detection are solved, and cost reduction and detection stability are improved.
Patent Information
- Application Number
- CN202510568739.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-07-11
AI Technical Summary
The existing circular discs waste materials severely during the manufacturing process, resulting in increased manufacturing costs. At the same time, the plum-shaped bimetallic sheet is prone to deforming temperature due to uneven transmission of sudden stress during the missing edges, which affects the detection accuracy.
The plum-shaped bimetallic sheet body with four petals evenly distributed is adopted. The convex reinforcement ribs are provided to stably clamp in the thermostat slot, and the reinforcement ribs are smoothly transitioned during stamping to ensure stress continuity and avoid stress concentration.
Effectively utilize materials, reduce manufacturing costs, and ensure the stability and accuracy of temperature detection, reducing material waste and deformation temperature deviation.
Smart Images
Figure CN120299946A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of temperature control, and particularly to an improved structure of a bimetallic strip. Background Art
[0002] In the industry of snap-action thermostats, basically circular metal sheets A (referred to as discs) are used. The performance of the circular discs is stable. When the temperature reaches the set temperature and snaps, the circular discs can be stably stuck in the card slots of the thermostat, making the snap deformation of the circular discs stable, thereby ensuring the stability of the detected temperature for temperature detection. However, since the circular metal sheets are stamped from bimetallic strips B, as Figure 3 shown, more than 45% of waste materials will be generated, which not only wastes materials but also significantly increases the manufacturing cost; Therefore, the inventor of the present invention attempts to adopt a plum blossom shape design and manufacture the bimetallic strip into a plum blossom shape. As Figure 2 shown, more than 30% of waste materials can be avoided. However, affected by the uneven transmission of sudden change stress at the missing edges of the plum blossom-shaped bimetallic strip C, due to the uneven transmission of sudden change stress at the missing edges and the missing edges being in an unrestricted state, after sudden change deformation and then returning to the original state, the sudden change deformation is likely to cause irreversible deformation, thereby causing the deformation temperature to shift, and also making the temperature detection inaccurate. Summary of the Invention
[0003] The purpose of the present invention is to provide an improved structure of a bimetallic strip that can overcome one or more of the above-mentioned drawbacks, ensure the stability of the detected temperature for temperature detection, make full use of materials, and reduce the manufacturing cost.
[0004] The present invention is realized as follows. It includes a plum blossom-shaped bimetallic strip body with four petals evenly distributed along the perimeter. The plum blossom-shaped bimetallic strip body is in a convex arc shape. The edges of the petals of the plum blossom-shaped bimetallic strip body are circular arcs with the center of the plum blossom-shaped bimetallic strip body as the center of the circle. On the petals perpendicular to the circular arc-shaped petal edges, convex reinforcing ribs are provided, and the convex reinforcing ribs reach the edges of the circular arc-shaped petals.
[0005] The edges of the petals of the plum blossom-shaped bimetallic strip body are circular arcs with the center of the plum blossom-shaped bimetallic strip body as the center of the circle, enabling the plum blossom-shaped bimetallic strip to be stuck in the circular card slots of the thermostat, so that the plum blossom-shaped bimetallic strip will not shift when the temperature changes suddenly, ensuring the stability of temperature detection; By adopting convex reinforcing ribs, during sudden change, even if the plum blossom-shaped bimetallic strip body has four missing edges, resulting in uneven transmission of sudden change stress at the missing edges, under the strengthening effect of the convex reinforcing ribs, the petals can still be stably stuck in the card slots of the thermostat without shifting. After the plum blossom-shaped bimetallic strip undergoes sudden change and then returns, it can return to the original state and the deformation temperature will not shift.
[0006] Due to the adoption of the plum blossom-shaped bimetallic strip body, the bimetallic strip can be fully utilized, and 40% of the materials can be saved compared with the conventional circular disc.
[0007] Preferably, the outwardly convex reinforcing rib is a groove-shaped protrusion. One end of the groove-shaped protrusion is open and located on the edge of the arc-shaped petal, and the other end of the groove-shaped protrusion is blind, so that the groove-shaped protrusion is smoothly transitioned with the plum blossom-shaped bimetallic strip body. When stamping from the bimetallic strip, the groove-shaped protrusion can be processed simultaneously, thereby ensuring the production efficiency.
[0008] Compared with the prior art, the present invention has the advantages of fully utilizing materials while ensuring the stability of the detected temperature for temperature detection, and reducing the manufacturing cost. Description of the Drawings
[0009] Figure 1 It is a schematic structural view of the improved structure of the bimetallic strip of the present invention; Figure 2 It is a layout view of processing the improved structure of the bimetallic strip of the present invention with the bimetallic strip; Figure 3 It is a layout view of processing the bimetallic strip of the prior art with the bimetallic strip.
[0010] Reference numerals in the drawings: 1 - plum blossom-shaped bimetallic strip body; 101 - petal; 102 - edge; 103 - concave arc notch; 104 - arc edge; 2 - reinforcing rib; 201 - open end; 202 - blind end. Detailed Description of the Invention
[0011] Now, the improved structure of the bimetallic strip of the present invention will be further described in detail with reference to the drawings and embodiments: As Figure 1 shown, the improved structure of the bimetallic strip of the present invention is realized as follows. It includes a plum blossom-shaped bimetallic strip body 1 with four petals 101 evenly distributed along the periphery. The plum blossom-shaped bimetallic strip body 1 is in the shape of an outwardly convex arc surface. The edge 102 of the petal 101 of the plum blossom-shaped bimetallic strip body 1 is a circular arc with the center of the plum blossom-shaped bimetallic strip body 1 as the center of the circle. An outwardly convex reinforcing rib 2 is provided on the petal 101 perpendicular to the circular arc edge 102 of the petal, and the outwardly convex reinforcing rib 2 reaches the circular arc edge 102 of the petal directly.
[0012] Preferably, the outwardly convex reinforcing rib 2 is a groove-shaped protrusion. One end of the reinforcing rib of the groove-shaped protrusion 2 is an open end 201 and is located on the edge 102 of the arc-shaped petal. The other end of the reinforcing rib of the groove-shaped protrusion is a blind end 202. The edge of the groove-shaped protrusion connected to the bimetallic sheet body 1 of the plum blossom shape is an arc-shaped edge, so that the reinforcing rib 2 of the groove-shaped protrusion and the bimetallic sheet body 1 have a smooth transition, so that when stamping on the bimetallic strip, the reinforcing rib 2 of the groove-shaped protrusion can be processed simultaneously, thereby ensuring the production efficiency.
[0013] Preferably, adjacent petals 101 are connected by an inwardly concave arc notch 103, and the inwardly concave arc notch 103 and the arc-shaped petal edge 102 are transitioned by an arc edge 104.
[0014] With the inwardly concave arc notch 103 and the arc edge 104, even if the uneven transfer of the sudden stress of the missing edge occurs, the stress changes continuously and smoothly, and no stress mutation occurs at a certain part, thereby preventing the bimetallic sheet from being damaged due to the mutation of the stress concentration at a certain point.
Claims
1. An improved structure of a bimetallic strip, characterized in that, It includes a plum blossom-shaped bimetallic sheet body with four petals evenly distributed along the periphery. The plum blossom-shaped bimetallic sheet body is arc-shaped. The edges of the petals of the plum blossom-shaped bimetallic sheet body are circular arcs centered on the center of the plum blossom-shaped bimetallic sheet body. On the petals perpendicular to the circular arc-shaped petal edges, there are outwardly convex reinforcing ribs, and the outwardly convex reinforcing ribs reach the edges of the circular arc-shaped petals.
2. The improved structure of the bimetallic strip according to claim 1, characterized in that, The outwardly convex reinforcing ribs are groove-shaped protrusions. One end of the groove-shaped protrusion of the reinforcing rib is open and located on the edge of the circular arc-shaped petal, and the other end of the groove-shaped protrusion of the reinforcing rib is blind, so that the groove-shaped protrusion of the reinforcing rib smoothly transitions with the plum blossom-shaped bimetallic sheet body.
3. The improved structure of the bimetallic strip according to claim 1 or 2, characterized in that, Adjacent petals are connected by an inwardly concave circular arc notch, and the inwardly concave circular arc notch and the circular arc-shaped petal edge are transitioned by an arc edge.