Appearance design method of built-in handle and built-in handle

Abstract

This invention belongs to the field of handle structure technology, and discloses a design method for an embedded handle and the embedded handle itself. The design method includes the following steps: S1, draw circle a with center coordinate Q1 on the front of the material. Using Q1 as a reference, draw circles b, c, and d, and a straight line P1 parallel to the X-axis, so that they intersect and are tangent to each other to obtain the front view shape; S2, draw circle e with center coordinate Q2 on the side of the material. Using Q2 as a reference, draw circle f, a straight line P2 parallel to the X-axis, and a straight line P3 parallel to the Y-axis, so that they intersect and are tangent to each other to obtain the side view shape; S3, draw circle g with center coordinate Q3 on the top surface of the material. Using Q3 as a reference, draw circles h, i, j, and k, and a straight line P4 parallel to the X-axis, so that they intersect and are tangent to each other to obtain the top view shape. This results in an arched structure composed of multiple curved surfaces, which is aesthetically pleasing, structurally strong, and has a smooth interior with ample space, improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of handle structure technology, and in particular to a design method for an embedded handle and an embedded handle. Background Technology

[0002] In the fields of home appliances, furniture, industrial equipment, HVAC, and heat pump technology, handles are required for simple door panels, drawers, cabinet doors, and other structures. As a common pull-out accessory, handles are usually located on the outside, so protruding handles are the most common type. However, protruding handles not only affect the appearance of the product, but also take up extra external space.

[0003] Therefore, in order to solve the problem of protruding handles, an inner groove is usually carved out on the part of the product that needs to be pulled out to replace the protruding handle, thereby avoiding the impact on the appearance of the product and not taking up extra external space. After continuous optimization, the embedded handle set in the inner groove was evolved.

[0004] However, since recessed handles need to be used in conjunction with the inner groove of the product, and it is relatively easy to make a rectangular inner groove on the product, recessed handles are usually matched with the shape of the inner groove and are mostly rectangular structures. Their appearance is monotonous and unattractive. In addition, the internal space of the rectangular structure has corners, which not only makes it less comfortable to use when the operator reaches in, but also causes stress concentration points at the corners, resulting in limited structural strength. Summary of the Invention

[0005] The purpose of this invention is to provide a design method for an embedded handle and an embedded handle that is aesthetically pleasing, structurally strong, and provides a good user experience.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, a method for designing the shape of an embedded handle is provided, including the following steps:

[0008] S1. Draw circle a with center coordinate Q1 on the front of the material. Using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y1 to draw circle b. Then, using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y2 to draw two circles c and d with a center distance D1. Circle c and circle d are symmetrically distributed on both sides of the Y-axis. Then, using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y3 to draw a straight line P1 parallel to the X-axis. Set the relevant dimensions of circle a, circle b, circle c, circle d and straight line P1 so that they intersect and are tangent to each other to obtain the front view shape of the embedded handle.

[0009] S2. Draw a circle e with center coordinate Q2 on the side of the material. Using the center coordinate Q2 as a reference, move the circle f a distance Z1 in the -Z direction and a distance Y4 in the -Y direction. Then, using the center coordinate Q2 as a reference, move the circle f a distance Y5 in the -Y direction and draw a straight line P2 parallel to the Z-axis. Then, using the center coordinate Q2 as a reference, move the circle f a distance Z2 in the -Z direction and draw a straight line P3 parallel to the Y-axis. Set the relevant dimensions of the circle e, the circle f, the straight line P2 and the straight line P3 so that they intersect and are tangent to each other to obtain the side view of the embedded handle.

[0010] S3. Draw a circle g with center coordinate Q3 on the top surface of the material. Using the center coordinate Q3 as a reference, move the circle h and i a distance D2 apart in the +Z direction by a distance Z3. The circles h and i are symmetrically distributed on both sides of the Z-axis. Then, using the center coordinate Q3 as a reference, move the circle j and k a distance D3 apart in the +Z direction by a distance Z4. The circles j and k are symmetrically distributed on both sides of the Z-axis. Then, using the center coordinate Q3 as a reference, move the circle j and k a distance Z5 apart in the +Z direction by a distance Z5. Draw a straight line P4 parallel to the X-axis. Set the relevant dimensions of the circles g, h, i, j, k and P4 so that they intersect and are tangent to each other to obtain the top view shape of the embedded handle.

[0011] Optionally, the method for designing the shape of the embedded handle further includes step S4, drawing a circle j concentric with circle a on the front of the material, wherein the diameter of circle j is larger than the diameter of circle a, and then moving a distance Y9 in the -Y direction with the center coordinate Q1 as a reference to draw circle k, and setting the relevant dimensions of circle j and circle k so that they intersect and are tangent to each other to obtain the opening shape of the embedded handle.

[0012] Optionally, in step S1, the arcs a1, b1, c1, d1, and line segment L1 obtained after the intersection and tangency of the circles a, b, c, d and P1 together form the frontal shape of the embedded handle.

[0013] In step S2, the circle e, the circle f, the straight line P2 and the straight line P3 intersect and are tangent to obtain arc e1, arc f1, straight line segment L2 and straight line segment L3, which together form the side view shape of the embedded handle;

[0014] In step S3, the circles g, h, i, j, k and the straight line P4 intersect and are tangent to obtain arcs g1, h1, i1, j1, k1 and the straight line segment L4, which together form the top view shape of the embedded handle.

[0015] In step S4, the arcs j1 and k1 formed by the intersection and tangency of the circles j and k constitute the opening shape of the embedded handle.

[0016] On the other hand, an embedded handle is provided, wherein the embedded handle is designed in shape using the above-mentioned embedded handle shape design method, and an inner cavity is provided on the embedded handle. Step S1 is used to obtain the front view shape of the embedded handle, step S2 is used to obtain the side view shape of the embedded handle, step S3 is used to obtain the top view shape of the embedded handle, and step S4 is used to obtain the opening shape of the inner cavity of the handle.

[0017] Optionally, the embedded handle includes a handle body and a handle flange body, the handle flange body being connected to the handle body, and the handle inner cavity penetrating the handle flange body and extending into the handle body.

[0018] Optionally, the handle flange body includes a first end and a second end along the +Y direction, the first end forming a first installation gap with the handle body, and the embedded handle further includes a first limiting member, the first limiting member being connected to the handle body and located in the first installation gap, forming a first limiting groove with the first end of the handle flange body.

[0019] Optionally, the first limiting member has a guide arc surface on the side facing the handle flange body.

[0020] Optionally, the embedded handle further includes a second limiting member, which is connected between the handle body and the second end of the handle flange body. The second limiting member has a limiting notch, and the limiting notch and the second end of the handle flange body form a second limiting groove.

[0021] Optionally, the second limiting member is further provided with a plurality of guide protrusions on the side opposite to the handle flange body, and the guide protrusions are provided with a first guide slope.

[0022] Optionally, the embedded handle includes multiple guide members, all of which are connected between the second end of the handle body and the handle flange body and are distributed on both sides of the second limiting member. Each of the multiple guide members is provided with a guide slope.

[0023] The beneficial effects of this invention are:

[0024] This invention provides a method for designing the shape of an embedded handle. The method involves drawing circles a, b, c, and d, and a straight line P1 on the front of the material, setting their dimensions, and ensuring they intersect and are tangent to each other to obtain the front view of the embedded handle. Similarly, drawing circles e and f, and straight lines P2 and P3 on the side of the material, and setting their dimensions, and ensuring they intersect and are tangent to each other, to obtain the side view of the embedded handle. Finally, drawing circles g, h, i, j, and k, and a straight line P4 on the top surface of the material, and setting their dimensions, and ensuring they intersect and are tangent to each other, to obtain the top view of the embedded handle. This results in an arched structure composed of multiple curved surfaces, which is not only aesthetically pleasing but also eliminates stress concentration points, increasing structural strength. Furthermore, the smooth interior and large space significantly improve the user experience when reaching in.

[0025] The present invention also provides an embedded handle. By applying the above-mentioned embedded handle shape design method, the embedded handle has an arched shape and a smooth inner cavity, which improves the structural strength of the embedded handle and enhances the user experience. Attached Figure Description

[0026] Figure 1 This is a flowchart of the method for designing the shape of the embedded handle of the present invention;

[0027] Figure 2 This is a front view schematic diagram of the shape design method of the embedded handle of the present invention;

[0028] Figure 3 This is a side view schematic diagram of the shape design method of the embedded handle of the present invention;

[0029] Figure 4 This is a top view schematic diagram of the shape design method of the embedded handle of the present invention;

[0030] Figure 5 This is a front view of the embedded handle designed using the embedded handle shape design method of the present invention.

[0031] Figure 6 This is a side view of the embedded handle designed using the embedded handle design method of the present invention.

[0032] Figure 7 This is a top view of the embedded handle designed using the embedded handle shape design method of the present invention.

[0033] Figure 8 This is a front view of the embedded handle of the present invention;

[0034] Figure 9 This is a rear view of the embedded handle of the present invention;

[0035] Figure 10 This is a side view of the embedded handle of the present invention;

[0036] Figure 11 This is a top view of the embedded handle of the present invention;

[0037] Figure 12 This is a bottom view of the embedded handle of the present invention;

[0038] Figure 13 This is a cross-sectional view of the embedded handle of the present invention;

[0039] Figure 14 yes Figure 13 Enlarged view of section A;

[0040] Figure 15 yes Figure 13 Enlarged view of section B;

[0041] Figure 16 This is a schematic diagram illustrating the operation of the embedded handle of the present invention.

[0042] In the picture:

[0043] 100. First limiting groove; 200. Second limiting groove; 300. Operator's hand; 400. Upper fixing plate; 500. Lower fixing plate;

[0044] 1. Handle body;

[0045] 2. Handle flange body; 21. First end; 22. Second end;

[0046] 3. Handle inner cavity;

[0047] 4. First limiting component; 41. Guide arc surface;

[0048] 5. Second limiting component; 51. First guide slope;

[0049] 6. Guide component; 61. Second guide ramp. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0051] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0052] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0054] In order to optimize the appearance of embedded handles, eliminate stress concentration points, improve structural strength and user experience, this embodiment provides a method for designing the shape of embedded handles.

[0055] like Figures 1 to 7 As shown, the design method for the recessed handle includes the following steps:

[0056] S1. Draw circle a with center coordinate Q1 on the front of the material. Using circle center coordinate Q1 as the reference, move along the -Y direction by a distance Y1 to draw circle b. Then, using circle center coordinate Q1 as the reference, move along the -Y direction by a distance Y2 to draw two circles c and d with a center distance D1. Circle c and circle d are symmetrically distributed on both sides of the Y axis. Then, using circle center coordinate Q1 as the reference, move along the -Y direction by a distance Y3 to draw a straight line P1 parallel to the X axis. Set the relevant dimensions of circles a, b, c, d and straight line P1 so that they intersect and are tangent to each other to obtain the front view shape of the embedded handle.

[0057] S2. Draw a circle e with center coordinate Q2 on the side of the material. Using center coordinate Q2 as the reference, move the circle f a distance Z1 in the -Z direction and a distance Y4 in the -Y direction. Then, using center coordinate Q2 as the reference, move the circle f a distance Y5 in the -Y direction and draw a straight line P2 parallel to the Z-axis. Then, using center coordinate Q2 as the reference, move the circle f a distance Z2 in the -Z direction and draw a straight line P3 parallel to the Y-axis. Set the relevant dimensions of circle e, circle f, straight line P2 and straight line P3 so that they intersect and are tangent to each other to obtain the side view of the embedded handle.

[0058] S3. Draw a circle g with center coordinate Q3 on the top surface of the material. Using center coordinate Q3 as the reference, move the circle a distance Z3 in the +Z direction to draw two circles h and i with a center distance D2. Circles h and i are symmetrically distributed on both sides of the Z-axis. Then, using center coordinate Q3 as the reference, move the circle a distance Z4 in the +Z direction to draw two circles j and k with a center distance D3. Circles j and k are symmetrically distributed on both sides of the Z-axis. Then, using center coordinate Q3 as the reference, move the circle a distance Z5 in the +Z direction to draw a straight line P4 parallel to the X-axis. Set the relevant dimensions of circles g, h, i, j, k and straight line P4 so that they intersect and are tangent to each other to obtain the top view shape of the embedded handle.

[0059] By drawing circles a, b, c, d, and line P1 on the front of the material and setting their dimensions, the front view of the embedded handle is obtained when they intersect and are tangent to each other. Similarly, by drawing circles e, f, lines P2 and P3 on the side of the material and setting their dimensions, the side view of the embedded handle is obtained when they intersect and are tangent to each other. Finally, by drawing circles g, h, i, j, k, and line P4 on the top of the material and setting their dimensions, the top view of the embedded handle is obtained when they intersect and are tangent to each other. This results in an arched structure composed of multiple curved surfaces. This not only has an aesthetically pleasing appearance but also, due to its arched structure, eliminates stress concentration points, increasing structural strength. Furthermore, the smooth interior and large space greatly improve the user experience when the operator's hand (300) reaches in.

[0060] In this embodiment, in step S1, the diameter of circle a is d1, the diameter of circle b is d2, and the diameters of circles c and d are the same, both d3, so d1 > d3 > d2; in step S2, the diameter of circle e is d4, and the diameter of circle f is d5, so d5 > d4; in step S3, the diameter of circle g is d6, the diameters of circles h and i are the same, both d7, and the diameters of circles j and k are the same, both d8, so d6 > d7 > d8. The dimensional parameters involved in this design can be freely set according to design requirements.

[0061] Optionally, such as Figure 2 , Figure 5As shown, the design method for the embedded handle also includes step S4: drawing a circle j concentric with circle a on the front of the material, with the diameter of circle j being larger than the diameter of circle a; then, moving a distance Y9 in the -Y direction with the center coordinate Q1 as the reference to draw circle k; and setting the relevant dimensions of circles j and k so that they intersect and are tangent to each other to obtain the opening shape of the embedded handle. By drawing circles j and k so that they intersect and are tangent to each other, the opening shape of the embedded handle composed of multiple arcs is obtained, making the opening shape crescent-shaped, aesthetically pleasing, and avoiding sharp points, thereby improving safety and comfort during use.

[0062] In this embodiment, the diameter of circle a is d1, the diameter of circle j is d9, and d1 < d9. A circle l concentric with circles a and b is drawn on the front of the material, with a diameter of d10, and d1 < d10 < d9. Then, a circle m concentric with circle b is drawn, where the diameter of circle b is d2, the diameter of circle k is d11, and the diameter of circle m is d12, and d11 < d12 < d2. By making circles l and m intersect and remain tangent to each other, arcs l1 and m1 are obtained. Arcs l1 and m1 form a chamfer edge line similar to the opening shape but with a larger range. Thus, during processing, a chamfer is formed at the opening from the chamfer edge line to the opening shape line, making the surface of the opening smooth and avoiding sharp points, thereby improving the safety and comfort during use.

[0063] Specifically, in step S1, the arcs a1, b1, c1, and d1 obtained by the intersection and tangency of circles a, b, c, d, and line P1, together with line segment L1, form the front view shape of the embedded handle; in step S2, the arcs e1, f1, L2, and L3 obtained by the intersection and tangency of circles e, f, and line P2 and line P3, together form the side view shape of the embedded handle; in step S3, the arcs g, h, i, j, k, and line P4 obtained by the intersection and tangency of circles g1, h1, i1, j1, k1, and line segment L4, together form the top view shape of the embedded handle; in step S4, the arcs j1 and k1 obtained by the intersection and tangency of circles j and k form the opening shape of the embedded handle.

[0064] like Figures 8 to 16 As shown, in this embodiment, an embedded handle is also provided. The handle is designed by applying the above-described embedded handle shape design method. The embedded handle has an inner cavity 3. Step S1 is used to obtain the front view shape of the embedded handle, step S2 is used to obtain the side view shape of the embedded handle, step S3 is used to obtain the top view shape of the embedded handle, and step S4 is used to obtain the opening shape of the inner cavity 3.

[0065] By applying the above-mentioned design method for the recessed handle, the recessed handle has an arched shape and a smooth inner cavity 3, which improves the structural strength of the recessed handle and enhances the user experience.

[0066] In this embodiment, the embedded handle includes a handle body 1 and a handle flange 2. The handle flange 2 is connected to the handle body 1, and the handle cavity 3 penetrates the handle flange 2 and extends into the handle body 1. The handle body 1, the handle flange 2, and the handle cavity 3 formed in the embedded handle are all manufactured using an integral molding process, avoiding the need for subsequent connection after separate manufacturing. Furthermore, the integrated design ensures the structural strength of the embedded handle.

[0067] Optionally, such as Figure 8 , Figure 14 As shown, the handle flange body 2 includes a first end 21 and a second end 22 along the +Y direction. A first installation gap is formed between the first end 21 and the handle body 1. The embedded handle also includes a first limiting member 4, which is connected to the handle body 1 and located within the first installation gap, forming a first limiting groove 100 between itself and the first end 21 of the handle flange body 2. By forming a first installation gap between the handle body 1 and the handle flange body 2, and by providing a first limiting member 4 within the first installation gap that forms the first limiting groove 100 with the first end 21 of the handle flange body 2, the embedded handle is positioned and fixed during assembly via the first limiting groove 100. This eliminates the need for additional connecting parts, reduces the number of components, and simplifies the connection operation. In this embodiment, multiple evenly distributed first limiting members 4 are provided in the first installation gap, thereby improving the strength of the limiting and fixing.

[0068] Optionally, such as Figure 8 , Figure 14 As shown, the first limiting member 4 has a guide arc surface 41 on the side facing the handle flange body 2. By providing the guide arc surface 41 on the side of the first limiting member 4 facing the handle flange body 2, the assembly process is guided, and the arc surface makes the assembly work smoother, avoiding sharp points that may cause jamming during assembly. In this embodiment, the first limiting member 4 can be manufactured together with the embedded handle using an integral molding process, thereby avoiding subsequent connection processes and improving manufacturing efficiency.

[0069] Optionally, such as Figure 8 , Figure 15As shown, the embedded handle also includes a second limiting member 5, which is connected between the handle body 1 and the second end 22 of the handle flange 2. The second limiting member 5 has a limiting notch, forming a second limiting groove 200 between the limiting notch and the second end 22 of the handle flange 2. By providing the second limiting member 5 between the handle body 1 and the second end 22 of the handle flange 2, the limiting notch on the second limiting member 5 forms a second limiting groove 200 with the second end 22 of the handle flange 2, thereby limiting and fixing the other end of the embedded handle. This, in conjunction with the first limiting groove 100, makes the embedded handle more securely fixed, preventing loosening and detachment. In this embodiment, the second limiting member 5 can be manufactured together with the embedded handle using an integral molding process, thereby avoiding subsequent connection processes and improving manufacturing efficiency. In this embodiment, the second limiting groove 200 is an n-shaped groove.

[0070] Optionally, such as Figure 8 , Figure 15 As shown, the second limiting member 5 is provided with multiple guide protrusions on the side opposite to the handle flange body 2, and a first guide slope 51 is provided on the guide protrusions. By providing multiple guide protrusions on the second limiting member 5, the structural strength of the second limiting member 5 is strengthened, the stability of fixing the embedded handle is improved, and the first guide slope 51 on the guide protrusions guides the assembly work, making the assembly work smoother.

[0071] Optionally, such as Figure 12 As shown, the embedded handle includes multiple guide members 6, which are connected between the handle body 1 and the second end 22 of the handle flange body 2 and distributed on both sides of the second limiting member 5. Each guide member 6 has a guide slope. By distributing multiple guide members 6 on both sides of the second limiting member 5, the guiding force during the assembly of the embedded handle is improved, and the structural strength of the embedded handle at the handle flange body 2 is strengthened.

[0072] When assembling the recessed handle, firstly, the first end 21 of the handle flange 2 moves towards the installation position under the guidance of the guide arc surface 41, ultimately inserting the upper fixing plate 400 for fixing into the first limiting groove 100, thus fixing one end of the recessed handle. Then, pressing the second end 22 of the handle flange 2 causes it to move towards the installation position under the combined action of the first guide slope 51 of the guide protrusion and the second guide slope 61 of the guide member 6, ultimately inserting the lower fixing plate 500 for fixing into the second limiting groove 200, thereby assembling the recessed handle. Disassembly is performed by simply reversing the operation.

[0073] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for designing the shape of an embedded handle, characterized in that, The design method for the embedded handle includes the following steps: S1. Draw circle a with center coordinate Q1 on the front of the material. Using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y1 to draw circle b. Then, using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y2 to draw two circles c and d with a center distance D1. Circle c and circle d are symmetrically distributed on both sides of the Y-axis. Then, using the center coordinate Q1 as a reference, move along the -Y direction by a distance Y3 to draw a straight line P1 parallel to the X-axis. Set the relevant dimensions of circle a, circle b, circle c, circle d and straight line P1 so that they intersect and are tangent to each other to obtain the front view shape of the embedded handle. S2. Draw a circle e with center coordinate Q2 on the side of the material. Using the center coordinate Q2 as a reference, move the circle f a distance Z1 in the -Z direction and a distance Y4 in the -Y direction. Then, using the center coordinate Q2 as a reference, move the circle f a distance Y5 in the -Y direction and draw a straight line P2 parallel to the Z-axis. Then, using the center coordinate Q2 as a reference, move the circle f a distance Z2 in the -Z direction and draw a straight line P3 parallel to the Y-axis. Set the relevant dimensions of the circle e, the circle f, the straight line P2 and the straight line P3 so that they intersect and are tangent to each other to obtain the side view of the embedded handle. S3. Draw a circle g with center coordinate Q3 on the top surface of the material. Using the center coordinate Q3 as a reference, move the circle h and i a distance D2 apart in the +Z direction by a distance Z3. The circles h and i are symmetrically distributed on both sides of the Z-axis. Then, using the center coordinate Q3 as a reference, move the circle j and k a distance D3 apart in the +Z direction by a distance Z4. The circles j and k are symmetrically distributed on both sides of the Z-axis. Then, using the center coordinate Q3 as a reference, move the circle j and k a distance Z5 apart in the +Z direction by a distance Z5. Draw a straight line P4 parallel to the X-axis. Set the relevant dimensions of the circles g, h, i, j, k and P4 so that they intersect and are tangent to each other to obtain the top view shape of the embedded handle.

2. The method for designing the shape of an embedded handle according to claim 1, characterized in that, The method for designing the shape of the embedded handle further includes step S4, drawing a circle j concentric with circle a on the front of the material, wherein the diameter of circle j is larger than the diameter of circle a, and then moving a distance Y9 in the -Y direction with the center coordinate Q1 as a reference to draw circle k, and setting the relevant dimensions of circle j and circle k so that they intersect and are tangent to each other to obtain the opening shape of the embedded handle.

3. The method for designing the shape of an embedded handle according to claim 2, characterized in that, In step S1, the circular arcs a1, b1, c1, d1, and line segment L1 obtained after the intersection and tangency of circle a, circle b, circle c, circle d and line P1 together form the frontal shape of the embedded handle. In step S2, the circle e, the circle f, the straight line P2 and the straight line P3 intersect and are tangent to obtain arc e1, arc f1, straight line segment L2 and straight line segment L3, which together form the side view shape of the embedded handle; In step S3, the circles g, h, i, j, k and the straight line P4 intersect and are tangent to obtain arcs g1, h1, i1, j1, k1 and the straight line segment L4, which together form the top view shape of the embedded handle. In step S4, the arcs j1 and k1 formed by the intersection and tangency of the circles j and k constitute the opening shape of the embedded handle.

4. An embedded handle, characterized in that, The embedded handle is designed using the shape design method of the embedded handle as described in any one of claims 1-3. The embedded handle has an inner cavity (3). Step S1 is used to obtain the front view shape of the embedded handle, step S2 is used to obtain the side view shape of the embedded handle, step S3 is used to obtain the top view shape of the embedded handle, and step S4 is used to obtain the opening shape of the inner cavity (3).

5. The embedded handle according to claim 4, characterized in that, The embedded handle includes a handle body (1) and a handle flange (2). The handle flange (2) is connected to the handle body (1), and the handle cavity (3) passes through the handle flange (2) and extends into the handle body (1).

6. The embedded handle according to claim 5, characterized in that, The handle flange body (2) includes a first end (21) and a second end (22) along the +Y direction. The first end (21) forms a first installation gap with the handle body (1). The embedded handle also includes a first limiting member (4). The first limiting member (4) is connected to the handle body (1) and is located in the first installation gap, forming a first limiting groove (100) between it and the first end (21) of the handle flange body (2).

7. The embedded handle according to claim 6, characterized in that, The first limiting member (4) has a guide arc surface (41) on the side facing the handle flange body (2).

8. The embedded handle according to claim 6, characterized in that, The embedded handle also includes a second limiting member (5), which is connected between the handle body (1) and the second end (22) of the handle flange body (2). A limiting notch is provided on the second limiting member (5), and a second limiting groove (200) is formed between the limiting notch and the second end (22) of the handle flange body (2).

9. The embedded handle according to claim 8, characterized in that, The second limiting member (5) is provided with a plurality of guide protrusions on the side away from the handle flange body (2), and the guide protrusions are provided with a first guide slope (51).

10. The embedded handle according to claim 9, characterized in that, The embedded handle includes multiple guide members (6), which are connected between the handle body (1) and the second end (22) of the handle flange body (2) and distributed on both sides of the second limiting member (5). Each of the multiple guide members (6) is provided with a guide slope.

Images