Clamping structure for SMC (Sheet Molding Compound) material and injection molded part
By designing a reinforced rectangular structure on the SMC material body and connecting it with the conical undercut structure of the injection molded part using 65Mn clips, the problems of easy chipping at the SMC material clipping edge and difficulty in accurate clipping dimensions are solved, achieving stable connection and detachability of the injection molded part.
Patent Information
- Application Number
- CN202423235331.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The SMC material's snap-in edges are prone to chipping, and the snap-in dimensions are difficult to accurately guarantee, resulting in the injection molded parts becoming loose and making unusual noises after being snapped in, and being difficult to disassemble.
The design incorporates a reinforced rectangular structure on the SMC material body, and uses 65Mn high-strength buckles to connect with the conical inverted buckle structure of the injection molded part, ensuring a tight fit and secure connection.
The problem of loosening and abnormal noise in injection molded parts has been solved, ensuring the strength and detachability of the connection, and achieving a stable connection between the injection molded parts and SMC material.
Smart Images
Figure CN223469539U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to SMC material processing technical field especially relates to a kind of clamping structure for SMC material and injection molding. BACKGROUND
[0002] SMC material is usually composed of unsaturated polyester resin, glass fiber, filler, initiator, thickening agent, mold release agent and other components. Among them, unsaturated polyester resin is the matrix material, which provides the basic properties of the material such as adhesion, chemical resistance, etc.
[0003] When the body of SMC material is clamped with conventional injection molding, the clamping edge of SMC material is prone to collapse. At the same time, it is difficult to accurately ensure the clamping size, causing the injection molding to be loose and noisy after clamping, and the damage of secondary disassembly. SUMMARY
[0004] To solve the technical problems in the background art, the utility model provides a kind of clamping structure for SMC material and injection molding.
[0005] The utility model provides a kind of clamping structure for SMC material and injection molding, including SMC material body, injection molding work piece and 65Mn buckle, the two sides of SMC material body are A face and B face respectively, the B face of SMC material body is equipped with reinforcing rectangular structure, the reinforcing rectangular structure protrudes from the B face of SMC material body, the upper surface of reinforcing rectangular structure is equipped with rectangular through hole in SMC material body;
[0006] The 65Mn buckle is clamped at the rectangular through hole, and the head is located at the B face of SMC material body. The injection molding work piece has a butt joint surface, and the butt joint surface is provided with a clamping piece. The top end of the clamping piece is provided with a tapered reverse buckle structure. The clamping piece can be clamped with the 65Mn buckle. When the clamping piece is clamped with the 65Mn buckle, the butt joint surface of the injection molding work piece is tightly combined with the A face of the SMC material body.
[0007] Preferably, the 65Mn buckle is axisymmetric in shape, including a first clamping strip, a second clamping strip and a connecting part.
[0008] The first clamping strip includes a first guide part, a first clamping part and a first limiting part. The second clamping strip includes a second guide part, a second clamping part and a second limiting part.
[0009] One end of the first guide part and one end of the second guide part are connected by the connecting part. The first guide part and the second guide part are axisymmetrically distributed with the midpoint of the connecting part as the axis. The distance between the first guide part and the second guide part gradually increases from the position close to the connecting part to the position away from the connecting part.
[0010] The end of the first guide part and the second guide part respectively bends towards the direction close to the symmetry axis, and is respectively connected with the first clamping part and the second clamping part, the first clamping part and the second clamping part are parallel to the symmetry axis, the end of the first clamping part and the second clamping part respectively bends towards the direction away from the symmetry axis, and is respectively connected with the first limiting part and the second limiting part, the first limiting part and the second limiting part are perpendicular to the symmetry axis; the bending part of the first guide part and the first clamping part is the first bending part, and the bending part of the second guide part and the second clamping part is the second bending part.
[0011] Preferably, the 65Mn buckle further comprises a first clamping key and a second clamping key;
[0012] The middle part of the first clamping strip and the second clamping strip is provided with a strip-shaped hole, and the strip-shaped hole on the first clamping strip and the second clamping strip is located on the first limiting part and the second limiting part respectively at one end away from the connecting part, which is marked as point A and point B, and the first clamping key and the second clamping key are connected to point A and point B respectively;
[0013] The first clamping key has a first L-shaped connecting part, a first inclined part and a first positioning part; the second clamping key has a second L-shaped connecting part, a second inclined part and a second positioning part; the first inclined part is connected with point A through the first L-shaped connecting part, the second inclined part is connected with point B through the second L-shaped connecting part, and the two faces of the first L-shaped connecting part are respectively in the same plane with the first clamping part and the first limiting part; the two faces of the second L-shaped connecting part are respectively in the same plane with the second clamping part and the second limiting part;
[0014] The distance between the first inclined part and the second inclined part gradually decreases from the position away from the connecting part to the position close to the connecting part, and the end of the first inclined part and the second inclined part respectively bends away from the symmetry axis, and is respectively connected with the first positioning part and the second positioning part;
[0015] The first clamping key and the second clamping key are located between the first clamping strip and the second clamping strip.
[0016] Preferably, the connecting part of the 65Mn buckle enters from the A face of the SMC material body, when the 65Mn buckle is clamped with the rectangular through hole, the first limiting part and the second limiting part are located on the A face of the SMC material body, the first bending part and the second bending part are located on the upper surface of the reinforced rectangular structure; the conical reverse buckle structure is located between the first guide part, the second guide part, the first positioning part and the second positioning part, when the conical reverse buckle structure extrudes the first clamping key and the second clamping key, the two groups of strip-shaped holes respectively provide deformation space for the first clamping key and the second clamping key.
[0017] Preferably, the inner wall of the middle part of the rectangular through hole on both sides of the reinforcing rectangular structure is provided with a groove on the upper surface, and the two groups of grooves provide deformation space for the first clamping key and the second clamping key when the conical reverse buckle structure extrudes the first clamping key and the second clamping key during the clamping of the 65Mn buckle and the rectangular through hole.
[0018] In the utility model, the clamping structure for SMC material and injection molding part is designed with a reinforcing rectangular structure on the SMC body, and a special 65Mn high-strength clamping buckle is installed according to the shape, so that the installation surface is flush. At the same time, the clamping strength is guaranteed, the injection molding part used for assembly is designed with a conical reverse buckle structure and is connected with the special 65Mn high-strength clamping buckle, so that the loosening and abnormal sound caused by the direct clamping of the clamping structure of the injection molding part and the opening of the SMC body are completely solved. The assembly of the injection molding part is also guaranteed to be removable.
[0019] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 It is a structural schematic view of the utility model;
[0021] Figure 2 It is a structural schematic view of the utility model side;
[0022] Figure 3 It is a structural schematic view of the SMC material body in the utility model;
[0023] Figure 4 It is a structural schematic view of the 65Mn buckle in the utility model;
[0024] Figure 5 It is a structural schematic view of the injection molding workpiece in the utility model;
[0025] Explanation of reference numerals in the drawing: 1, 65Mn buckle; 101, connecting part; 1021, first guide part; 1022, second guide part; 1031, first clamping part; 1032, second clamping part; 1041, first limiting part; 1042, second limiting part; 1051, first inclined part; 1052, second inclined part; 1061, first positioning part; 1062, second positioning part; 2, SMC material body; 201, reinforcing rectangular structure; 202, groove; 3, injection molding workpiece; 301, clamping part; 302, conical reverse buckle structure. DETAILED DESCRIPTION
[0026] Embodiments of the present application will be described in detail below, examples of which are represented in the drawings, wherein identical or similar symbols represent identical or similar elements or elements having identical or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and are not to be understood as limiting the present application.
[0027] As shown in the drawings, the embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and are not to be understood as limiting the present application. Figures 1-5 The 65Mn buckle 1 is clamped at the rectangular through hole, the head part is located at the B face of the SMC material body 2, the injection molding workpiece 3 has a butt joint face, the butt joint face is provided with a clamping piece 301, the top end of the clamping piece 301 is provided with a tapered undercut structure 302, the clamping piece 301 can be clamped with the 65Mn buckle 1, when the clamping piece 301 is clamped with the 65Mn buckle 1, the butt joint face of the injection molding workpiece 3 and the A face of the SMC material body 2 are tightly combined.
[0028] The 65Mn buckle 1 is clamped at the rectangular through hole, the head part is located at the B face of the SMC material body 2, the injection molding workpiece 3 has a butt joint face, the butt joint face is provided with a clamping piece 301, the top end of the clamping piece 301 is provided with a tapered undercut structure 302, the clamping piece 301 can be clamped with the 65Mn buckle 1, when the clamping piece 301 is clamped with the 65Mn buckle 1, the butt joint face of the injection molding workpiece 3 and the A face of the SMC material body 2 are tightly combined.
[0029] Preferably, the 65Mn buckle 1 is an axisymmetric shape, comprising a first buckle strip, a second buckle strip and a connecting part 101;
[0030] The first buckle strip comprises a first guide part 1021, a first clamping part 1031 and a first limiting part 1041, and the second buckle strip comprises a second guide part 1022, a second clamping part 1032 and a second limiting part 1042;
[0031] One end of the first guide part 1021 and one end of the second guide part 1022 are connected through the connecting part 101, the first guide part 1021 and the second guide part 1022 are distributed in the midpoint axis of the connecting part 101, and the spacing between the first guide part 1021 and the second guide part 1022 gradually increases from the position close to the connecting part 101 to the position away from the connecting part 101;
[0032] The end of the first guide part 1021 and the second guide part 1022 is respectively bent towards the direction close to the symmetry axis, and is respectively connected with the first clamping part 1031 and the second clamping part 1032, the first clamping part 1031 and the second clamping part 1032 are parallel to the symmetry axis, the end of the first clamping part 1031 and the second clamping part 1032 is respectively bent towards the direction away from the symmetry axis, and is respectively connected with the first limiting part 1041 and the second limiting part 1042, the first limiting part 1041 and the second limiting part 1042 are perpendicular to the symmetry axis; the bent part of the first guide part 1021 and the first clamping part 1031 is the first bent part, and the bent part of the second guide part 1022 and the second clamping part 1032 is the second bent part.
[0033] Preferably, the 65Mn buckle 1 further comprises a first clamping key and a second clamping key;
[0034] The middle part of the first clamping strip and the second clamping strip is respectively provided with a strip-shaped hole, and the strip-shaped hole on the first clamping strip and the second clamping strip is respectively located on the first limiting part 1041 and the second limiting part 1042 away from the end of the connecting part 101, which is marked as point A and point B, and the first clamping key and the second clamping key are respectively connected to point A and point B.
[0035] The first clamping key has a first L-shaped connecting part, a first inclined part 1051 and a first positioning part 1061; the second clamping key has a second L-shaped connecting part, a second inclined part 1052 and a second positioning part 1062; the first inclined part 1051 is connected with point A through the first L-shaped connecting part, the second inclined part 1052 is connected with point B through the second L-shaped connecting part, and the two faces of the first L-shaped connecting part are respectively in the same plane with the first clamping part 1031 and the first limiting part 1041; the two faces of the second L-shaped connecting part are respectively in the same plane with the second clamping part 1032 and the second limiting part 1042;
[0036] The distance between the first inclined part 1051 and the second inclined part 1052 gradually decreases from the position away from the connecting part 101 to the position close to the connecting part 101, and the end of the first inclined part 1051 and the second inclined part 1052 is respectively bent towards the direction away from the symmetry axis, and is respectively connected with the first positioning part 1061 and the second positioning part 1062;
[0037] The first clamping key and the second clamping key are located between the first clamping strip and the second clamping strip.
[0038] Preferably, the adapter 101 of the 65Mn buckle 1 enters from the A surface of the SMC material body 2, and when the 65Mn buckle 1 is buckled with the rectangular through hole, the first limiting part 1041 and the second limiting part 1042 are located on the A surface of the SMC material body 2, and the first bending part and the second bending part are located on the upper surface of the reinforced rectangular structure 201; the tapered undercut structure 302 is located between the first guide part 1021, the second guide part 1022, the first positioning part 1061 and the second positioning part 1062, and when the tapered undercut structure 302 extrudes the first clamping key and the second clamping key, the two groups of strip-shaped holes provide deformation space for the first clamping key and the second clamping key respectively.
[0039] The 65Mn buckle 1 is convenient to buckle with the SMC material body 2, the adapter 101 enters from the A surface of the SMC material, the rectangular through hole extrudes the first guide part and the second guide part 1022 on both sides, so that the 65Mn buckle 1 deforms, and after the first guide part 1021 and the second guide part 1022 completely pass through the rectangular through hole, it rebounds, the first clamping part 1031 and the second clamping part 1032 are buckled at the rectangular through hole, and under the action of the reinforced rectangular structure 201, the buckling is more firm, preventing loosening, and the buckling strength is guaranteed.
[0040] When the buckling part 301 of the injection molded part is connected with the 65Mn buckle 1, the tapered undercut structure 302 of the injection molded part for assembly is designed to be connected with the special 65Mn high-strength buckling buckle, and when entering the 65Mn buckle 1, the tapered undercut structure 302 will spread the first clamping key and the second clamping key to both sides, and when the tapered undercut structure 302 passes through the first clamping key and the second clamping key, the first clamping key and the second clamping key rebound to lock the tapered undercut structure 302, which completely solves the loosening and abnormal sound problem caused by directly buckling the injection molded part buckling structure with the SMC body opening. Also ensure the repairability and disassembly of the assembled injection molded part.
[0041] Preferably, the recess 202 is provided in the middle of the inner wall of the rectangular through hole on both sides of the reinforced rectangular structure 201 and the upper surface, and when the 65Mn buckle 1 is buckled with the rectangular through hole, the tapered undercut structure 302 extrudes the first clamping key and the second clamping key, and the two groups of recesses 202 provide deformation space for the first clamping key and the second clamping key respectively.
[0042] It should be understood that the orientation or positional relationship indicated by terms such as "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely intended to facilitate the description of the present application and simplify the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0043] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0044] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0045] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0046] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A clamping structure for SMC material and injection molded parts, comprising an SMC material body (2), an injection molded workpiece (3), and a 65Mn clasp (1), characterized in that, Two sides of the SMC material body (2) are A side and B side respectively, the B side of the SMC material body (2) is provided with a reinforcing rectangular structure (201), the reinforcing rectangular structure (201) protrudes from the B side of the SMC material body (2), and a rectangular through hole is formed in the SMC material body (2) through the upper surface of the reinforcing rectangular structure (201); The 65Mn buckle (1) is clamped at the rectangular through hole, and the head portion is located on the B side of the SMC material body (2), the injection molding workpiece (3) has a butt joint surface, the butt joint surface is provided with a clamping piece (301), the top end of the clamping piece (301) is provided with a tapered reverse buckle structure (302), and the clamping piece (301) can be clamped with the 65Mn buckle (1), when the clamping piece (301) is clamped with the 65Mn buckle (1), the butt joint surface of the injection molding workpiece (3) is tightly combined with the A side of the SMC material body (2).
2. A snap fit structure for SMC material and injection molded parts according to claim 1, characterized in that, The 65Mn buckle (1) is axisymmetric, including a first buckle strip, a second buckle strip and a connecting portion (101); The first buckle strip includes a first guide portion (1021), a first clamping portion (1031) and a first limiting portion (1041), and the second buckle strip includes a second guide portion (1022), a second clamping portion (1032) and a second limiting portion (1042); One end of the first guide portion (1021) and one end of the second guide portion (1022) are connected through the connecting portion (101), the first guide portion (1021) and the second guide portion (1022) are distributed in the midpoint axis of the connecting portion (101) in an axisymmetric manner, and the distance between the first guide portion (1021) and the second guide portion (1022) gradually increases from the position close to the connecting portion (101) to the position away from the connecting portion (101); The ends of the first guide portion (1021) and the second guide portion (1022) are respectively bent towards the direction close to the symmetry axis, and are respectively connected with the first clamping portion (1031) and the second clamping portion (1032), the first clamping portion (1031) and the second clamping portion (1032) are parallel to the symmetry axis, the ends of the first clamping portion (1031) and the second clamping portion (1032) are respectively bent towards the direction away from the symmetry axis, and are respectively connected with the first limiting portion (1041) and the second limiting portion (1042), the first limiting portion (1041) and the second limiting portion (1042) are perpendicular to the symmetry axis; the bending portion of the first guide portion (1021) and the first clamping portion (1031) is a first bending portion, and the bending portion of the second guide portion (1022) and the second clamping portion (1032) is a second bending portion.
3. A snap fit structure for SMC material and injection molded parts according to claim 2, characterized in that, The 65Mn buckle (1) further includes a first clamping key and a second clamping key; The middle portions of the first buckle strip and the second buckle strip are respectively provided with a strip-shaped hole, and the strip-shaped holes on the first buckle strip and the second buckle strip are respectively located on the first limiting portion (1041) and the second limiting portion (1042) away from the connecting portion (101), and are respectively marked as point A and point B, and the first clamping key and the second clamping key are respectively connected to point A and point B. The first clamping key has a first L-shaped connecting part, a first inclined part (1051) and a first positioning part (1061); the second clamping key has a second L-shaped connecting part, a second inclined part (1052) and a second positioning part (1062); the first inclined part (1051) is connected with point A through the first L-shaped connecting part, the second inclined part (1052) is connected with point B through the second L-shaped connecting part, and the two faces of the first L-shaped connecting part are respectively in the same plane with the first clamping part (1031) and the first limiting part (1041); the two faces of the second L-shaped connecting part are respectively in the same plane with the second clamping part (1032) and the second limiting part (1042); The distance between the first inclined part (1051) and the second inclined part (1052) gradually decreases from the position away from the adapter (101) to the position close to the adapter (101), and the ends of the first inclined part (1051) and the second inclined part (1052) are respectively bent away from the symmetry axis and are respectively connected with the first positioning part (1061) and the second positioning part (1062); The first clamping key and the second clamping key are located between the first clamping strip and the second clamping strip.
4. A snap action structure for SMC material and injection molded parts according to claim 3, characterized in that, The adapter (101) of the 65Mn clamping buckle (1) enters from the A face of the SMC material body (2), and when the 65Mn clamping buckle (1) is clamped with the rectangular through hole, the first limiting part (1041) and the second limiting part (1042) are located on the A face of the SMC material body (2), the first bending part and the second bending part are located on the upper surface of the reinforced rectangular structure (201); the conical undercut structure (302) is located between the first positioning part (1061) and the second positioning part (1062), and when the conical undercut structure (302) extrudes the first clamping key and the second clamping key, the two groups of strip-shaped holes provide deformation space for the first clamping key and the second clamping key.
5. A snap fit structure for SMC material and injection molded parts according to claim 1, wherein, The recesses (202) are arranged in the middle of the inner walls of the two sides of the rectangular through hole of the reinforced rectangular structure (201) and on the upper surface, and in the process of clamping the 65Mn clamping buckle (1) with the rectangular through hole, the two groups of recesses (202) provide deformation space for the first clamping key and the second clamping key when the conical undercut structure (302) extrudes the first clamping key and the second clamping key.