Fastening mechanism and assembling component

Abstract

The utility model discloses a fastening mechanism and an assembling assembly, and belongs to the technical field of fasteners. The fastening mechanism comprises a first fastening piece, a second fastening piece and a third fastening piece. The first fastener comprises a first head part and a first rod part, the first rod part is connected with the first head part, a clamping head is arranged at the end, away from the first head part, of the first rod part, and a fastening hole is formed in the clamping head; a stepped hole is formed in the end, away from the first fastener, of the second fastener, a clamping hole communicating with the stepped hole is formed in the end, close to the first fastener, of the second fastener, and the clamping hole is matched with the clamping head in shape; the third fastener sequentially penetrates through the stepped hole, the clamping hole and the fastening hole so that the first component and the second component can be connected in a fastened mode. According to the fastening mechanism, the axial clearance is reduced, and the fastening mechanism is suitable for assembly occasions with high precision requirements; and the technical problem of fastening failure caused by loosening due to relative rotation generated after assembly can be avoided, the fastening stability is effectively improved, the structure is simple, and assembly is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of fasteners, and in particular to a fastening mechanism and an assembly component. Background Art

[0002] In the field of machinery, loose screws are a common phenomenon, and their impact on mechanical structures is destructive. Pins are a common structure in mechanical design and are widely used in some compact structures such as connecting rods, positioning devices, couplings, etc.

[0003] Currently, pin assembly methods are mostly cotter pin, circlip pin, or splice pin. Both cotter pin and circlip pin have relatively large axial clearances, making them suitable only for assembly applications requiring lower precision. While splice pins have relatively small axial clearances, making them suitable for assembly applications requiring higher precision, they can easily loosen the screws. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a fastening mechanism.

[0005] To solve the above technical problems, this application provides:

[0006] A fastening mechanism for fastening a first component and a second component, comprising:

[0007] A first fastener includes a first head and a first rod, wherein the first rod is connected to the first head, and a clamping joint is provided at one end of the first rod away from the first head, wherein the clamping joint has a fastening hole;

[0008] The second fastener has a stepped hole at one end away from the first fastener and a connecting hole in communication with the stepped hole at one end close to the first fastener, wherein the connecting hole matches the shape of the connecting joint;

[0009] The third fastener is sequentially passed through the stepped hole, the clamping hole and the fastening hole to fasten the first component and the second component.

[0010] In addition, the fastening mechanism according to the present application may also have the following additional technical features:

[0011] In some embodiments of the present application, in a direction perpendicular to the axis of the first rod portion, the cross-section of the clamping joint is non-circular, the clamping hole is an irregular hole, and the shape of the irregular hole matches the cross-sectional shape of the clamping joint.

[0012] In some embodiments of the present application, in a direction perpendicular to the axis of the first rod portion, the cross-section of the clamping joint is any one of a semicircular, an elliptical or a polygonal shape.

[0013] In some embodiments of the present application, the orthographic projection shape of the special-shaped hole in a direction perpendicular to the axis of the first rod portion is any one of a semicircle, an ellipse or a polygon.

[0014] In some embodiments of the present application, the third fastener includes a second head and a second rod, the second rod is connected to the second head, the second head abuts against the step surface of the stepped hole, and the second rod is sequentially inserted into the stepped hole, the clamping hole and the fastening hole.

[0015] In some embodiments of the present application, an internal thread is provided on the hole wall of the fastening hole, and an external thread matching the internal thread is provided on the outer circumferential wall of the second rod portion.

[0016] In some embodiments of the present application, a special-shaped groove is formed at one end of the second head away from the second rod portion.

[0017] In some embodiments of the present application, the orthographic projection shape of the special-shaped groove in a direction perpendicular to the axis of the second rod portion is any one of a semicircle, an ellipse or a polygon.

[0018] In a second aspect, the present application further provides an assembly component, comprising:

[0019] first component;

[0020] Second component;

[0021] And the fastening mechanism described in any of the above embodiments, the first component is fastened to the second component through the fastening mechanism.

[0022] In some embodiments of the present application, the first component is provided with a first assembly hole, the second component is provided with a second assembly hole, the first head portion abuts against a side of the first component away from the second component, the first rod portion is sequentially passed through the first assembly hole and the second assembly hole, the second fastener is clamped with the clamping joint through the clamping hole, and abuts against a side of the second component away from the first component, and the third fastener is sequentially passed through the stepped hole, the clamping hole and the fastening hole to fasten the first component and the second component.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] The present application proposes a fastening mechanism for fastening a first component and a second component, the fastening mechanism comprising a first fastener, a second fastener and a third fastener, the first fastener comprising a first head and a first rod, the first rod being connected to the first head. A fastening hole is provided on the clamping joint, a stepped hole is provided at an end of the second fastener away from the first fastener, a clamping hole connected to the stepped hole is provided at an end of the second fastener close to the first fastener, and a third fastener is sequentially inserted through the stepped hole, the clamping hole and the fastening hole, so that the first component and the second component are fastened together under the connection between the third fastener and the fastening hole. Since the third fastener moves relative to the first fastener in the axial direction during the connection process with the fastening hole, the axial clearance can be effectively reduced, and the clamping joint is suitable for assembly occasions with high precision requirements.

[0025] At the same time, by providing a clamping joint at the end of the first rod portion away from the first head portion, and opening a clamping hole that matches the shape of the clamping joint at the end of the second fastener close to the first fastener, the first fastener and the second fastener can be made to move synchronously under the clamping action of the clamping joint and the clamping hole, thereby making the first fastener, the second fastener and the third fastener move synchronously, and then making the first fastener, the second fastener and the third fastener remain relatively stationary after assembly, so as to avoid the technical problem of loosening and fastening failure caused by relative rotation of the first fastener, the second fastener and the third fastener after assembly, thereby effectively improving the fastening stability, and having a simple structure and convenient assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 shows a three-dimensional schematic diagram of a fastening mechanism in some embodiments of the present application;

[0028] Figure 2 A schematic exploded view of a fastening mechanism in some embodiments of the present application is shown;

[0029] Figure 3 Shows an exploded schematic diagram of the fastening mechanism in some embodiments of the present application from another perspective;

[0030] Figure 4 shows a right side schematic view of a first fastener in some embodiments of the present application;

[0031] Figure 5 shows a left side schematic view of a second fastener in some embodiments of the present application;

[0032] Figure 6 A right side schematic view of a third fastener in some embodiments of the present application is shown.

[0033] Description of main component symbols:

[0034] 100-fastening mechanism;

[0035] 110 - first fastener; 111 - first head; 112 - first rod; 113 - card joint; 114 - fastening hole;

[0036] 120 - second fastener; 121 - stepped hole; 122 - snap-on hole;

[0037] 130 - third fastener; 131 - second head; 1311 - special-shaped groove; 132 - second rod. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0041] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] like Figure 1 、 Figure 2 and Figure 3 As shown, an embodiment of the present application provides a fastening mechanism 100 , which is mainly used to fasten a first component and a second component. The fastening mechanism 100 includes a first fastener 110 , a second fastener 120 , and a third fastener 130 .

[0044] The first fastener 110 includes a first head 111 and a first rod 112 . The first rod 112 is connected to the first head 111 . A clamping joint 113 is provided at one end of the first rod 112 away from the first head 111 . The clamping joint 113 is provided with a fastening hole 114 .

[0045] The second fastener 120 has a stepped hole 121 at one end away from the first fastener 110 , and a connecting hole 122 in communication with the stepped hole 121 at one end close to the first fastener 110 . The connecting hole 122 matches the shape of the connecting joint 113 .

[0046] The third fastener 130 is sequentially inserted into the stepped hole 121 , the engaging hole 122 , and the fastening hole 114 to fasten the first component and the second component together.

[0047] The fastening mechanism 100 provided in the embodiment of the present application has a fastening hole 114 on the snap joint 113. A stepped hole 121 is provided at the end of the second fastener 120 away from the first fastener 110, and a snap hole 122 connected to the stepped hole 121 is provided at the end of the second fastener 120 close to the first fastener 110. The third fastener 130 is sequentially inserted into the stepped hole 121, the snap hole 122 and the fastening hole 114, so that the first component and the second component are fastened under the connection between the third fastener 130 and the fastening hole 114. Since the third fastener 130 moves in the axial direction relative to the first fastener 110 during the connection process with the fastening hole 114, the axial clearance can be effectively reduced, which is suitable for assembly occasions with high precision requirements.

[0048] At the same time, by providing a clamping joint 113 at the end of the first rod portion 112 away from the first head portion 111, and opening a clamping hole 122 that matches the shape of the clamping joint 113 at the end of the second fastener 120 close to the first fastener 110, the first fastener 110 and the second fastener 120 can be made to move synchronously under the clamping action of the clamping joint 113 and the clamping hole 122, thereby making the first fastener 110, the second fastener 120 and the third fastener 130 move synchronously, and then making the first fastener 110, the second fastener 120 and the third fastener 130 remain relatively stationary after assembly, so as to avoid the technical problem of relative rotation of the first fastener 110, the second fastener 120 and the third fastener 130 after assembly, resulting in loosening and causing fastening failure, thereby effectively improving the fastening stability, and having a simple structure and easy assembly.

[0049] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, in the axial direction perpendicular to the first rod portion 112 , the cross-section of the clamping joint 113 is non-circular, and the clamping hole 122 is an irregular hole, the shape of which matches the cross-sectional shape of the clamping joint 113 .

[0050] In this embodiment, by setting the cross-section of the clamping joint 113 in the direction perpendicular to the axis of the first rod portion 112 to be non-circular, and setting the clamping hole 122 to be a special-shaped hole whose shape matches the cross-sectional shape of the clamping joint 113, the first fastener 110 and the second fastener 120 can always maintain synchronous and stable movement under the clamping action of the non-circular clamping joint 113 and the special-shaped clamping hole 122, so that the first fastener 110, the second fastener 120 and the third fastener 130 can always remain relatively stationary after assembly, effectively avoiding the technical problem of relative rotation of the first fastener 110, the second fastener 120 and the third fastener 130 after assembly, resulting in loosening and causing fastening failure.

[0051] like Figure 4As shown, further, in a direction perpendicular to the axis of the first rod portion 112 , the cross-section of the clamping joint 113 is any one of a semicircular, an elliptical or a polygonal shape.

[0052] For example, in this embodiment, the cross section of the card connector 113 is a square, but is not limited thereto, and can also be a triangle, a hexagon, a semicircle, an ellipse, etc., and can be designed according to the actual needs of the assembly, which will not be listed here.

[0053] like Figure 5 As shown, further, the orthographic projection shape of the special-shaped hole in the direction perpendicular to the axis of the first rod portion 112 is any one of a semicircle, an ellipse or a polygon.

[0054] For example, in this embodiment, the orthographic projection shape of the irregularly shaped hole in the direction perpendicular to the axis of the first rod portion 112 is a square, which matches the cross-sectional shape of the clamping joint 113, but is not limited to this. Other shapes may be triangular, hexagonal, semicircular, or elliptical, etc., and the specific design can be based on actual assembly needs, and will not be listed here.

[0055] like Figure 2 and Figure 3 As shown, in one embodiment of the present application, the third fastener 130 includes a second head 131 and a second rod 132, the second rod 132 is connected to the second head 131, the second head 131 abuts against the step surface of the stepped hole 121, and the second rod 132 is sequentially inserted into the stepped hole 121, the snap-fit ​​hole 122 and the fastening hole 114.

[0056] In this embodiment, the second rod portion 132 is connected to the second head portion 131, by abutting the second head portion 131 against the step surface of the stepped hole 121, and sequentially passing the second rod portion 132 through the stepped hole 121, the snap-fit ​​hole 122, and the fastening hole 114, so as to achieve a fastened connection between the first component and the second component under the connection between the second rod portion 132 and the fastening hole 114, and the abutment between the first head portion 111 and the second head portion 131 with the first component and the step surface respectively.

[0057] In the above embodiment of the present application, an internal thread is provided on the hole wall of the fastening hole 114 , and an external thread matching the internal thread is provided on the outer circumferential wall of the second rod portion 132 .

[0058] In this embodiment, an internal thread is provided on the hole wall of the fastening hole 114, and an external thread matching the internal thread is provided on the outer circumferential wall of the second rod portion 132, so that the third fastener 130 is fastened to the first fastener 110 under the threaded engagement action of the external thread and the internal thread, thereby fastening the first component to the second component under the abutment action of the first head 111 and the second head 131 with the first component and the step surface respectively.

[0059] like Figure 2 As shown, in the above embodiment of the present application, a special-shaped groove 1311 is formed at one end of the second head portion 131 away from the second rod portion 132 .

[0060] In this embodiment, a special-shaped groove 1311 is provided at one end of the second head portion 131 away from the second rod portion 132, so that the assembler can use a fastening tool to drive the special-shaped groove 1311 to drive the third fastener 130 to rotate, thereby achieving the tightening or loosening of the third fastener 130, and further achieving the tightening or loosening of the first component and the second component.

[0061] like Figure 6 As shown, further, the orthographic projection shape of the special-shaped groove 1311 in the direction perpendicular to the axis of the second rod portion 132 is any one of a semicircle, an ellipse or a polygon.

[0062] For example, in this embodiment, the orthographic projection of the special-shaped groove 1311 in a direction perpendicular to the axis of the second rod portion 132 is a regular hexagon, which matches the cross-sectional shape of the head of the fastening tool, but is not limited to this. Other shapes may also be cross-shaped, plum blossom-shaped, semicircular, or elliptical, and the specific design can be based on actual assembly needs, and will not be listed here.

[0063] An embodiment of the present application further provides an assembly component, comprising a first component, a second component, and the fastening mechanism 100 described in the above embodiment, wherein the first component is fastened to the second component via the fastening mechanism 100 .

[0064] The assembly component has the fastening mechanism 100 in any of the above embodiments, and thus has all the beneficial effects of the fastening mechanism 100, which will not be described in detail here.

[0065] In the above embodiment of the present application, the first component is provided with a first assembly hole, the second component is provided with a second assembly hole, the first head portion 111 is abutted against the side of the first component away from the second component, the first rod portion 112 is sequentially passed through the first assembly hole and the second assembly hole, the second fastener 120 is clamped with the clamping joint 113 through the clamping hole 122, and abutted against the side of the second component away from the first component, and the third fastener 130 is sequentially passed through the stepped hole 121, the clamping hole 122 and the fastening hole 114, so that the first component and the second component are fastened together.

[0066] In this way, the fastening connection between the first component and the second component can be achieved under the connection between the third fastener 130 and the fastening hole 114, the abutment between the first head 111 and the second fastener 120 and the first component and the second component respectively, and the abutment between the third fastener 130 and the step surface of the stepped hole 121.

[0067] In summary, the present application proposes a fastening mechanism 100 for fastening a first component and a second component. The fastening mechanism 100 includes a first fastener 110, a second fastener 120 and a third fastener 130. The first fastener 110 includes a first head 111 and a first rod 112. The first rod 112 is connected to the first head 111. A fastening hole 114 is provided on the snap joint 113. A stepped hole 121 is provided at the end of the second fastener 120 away from the first fastener 110, and a snap hole 122 is provided at the end of the second fastener 120 close to the first fastener 110 to communicate with the stepped hole 121. The third fastener 130 is sequentially inserted into the stepped hole 121, the snap hole 122 and the fastening hole 114, so that the first component and the second component are fastened under the connection between the third fastener 130 and the fastening hole 114. Since the third fastener 130 moves in the axial direction relative to the first fastener 110 during the connection process with the fastening hole 114, the axial clearance can be effectively reduced, which is suitable for assembly occasions with high precision requirements. At the same time, by providing a clamping joint 113 at the end of the first rod portion 112 away from the first head portion 111, and opening a clamping hole 122 that matches the shape of the clamping joint 113 at the end of the second fastener 120 close to the first fastener 110, the first fastener 110 and the second fastener 120 can be made to move synchronously under the clamping action of the clamping joint 113 and the clamping hole 122, thereby making the first fastener 110, the second fastener 120 and the third fastener 130 move synchronously, and then making the first fastener 110, the second fastener 120 and the third fastener 130 remain relatively stationary after assembly, so as to avoid the technical problem of relative rotation of the first fastener 110, the second fastener 120 and the third fastener 130 after assembly, resulting in loosening and causing fastening failure, thereby effectively improving the fastening stability, and having a simple structure and easy assembly.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0069] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A fastening mechanism for fastening a first component and a second component, characterized in that: include: A first fastener includes a first head and a first rod, wherein the first rod is connected to the first head, and a clamping joint is provided at one end of the first rod away from the first head, wherein the clamping joint has a fastening hole; The second fastener has a stepped hole at one end away from the first fastener and a connecting hole in communication with the stepped hole at one end close to the first fastener, wherein the connecting hole matches the shape of the connecting joint; The third fastener is sequentially passed through the stepped hole, the clamping hole and the fastening hole to fasten the first component and the second component.

2. The fastening mechanism according to claim 1, characterized in that: In a direction perpendicular to the axis of the first rod portion, the cross section of the clamping joint is non-circular, and the clamping hole is a special-shaped hole, the shape of which matches the cross-sectional shape of the clamping joint.

3. The fastening mechanism according to claim 2, characterized in that: In a direction perpendicular to the axis of the first rod portion, the cross-section of the clamping joint is any one of a semicircular, an elliptical or a polygonal shape.

4. The fastening mechanism according to claim 2, characterized in that: The orthographic projection shape of the special-shaped hole in a direction perpendicular to the axis of the first rod portion is any one of a semicircle, an ellipse or a polygon.

5. The fastening mechanism according to claim 1, wherein: The third fastener includes a second head and a second rod, the second rod is connected to the second head, the second head abuts against the step surface of the stepped hole, and the second rod is sequentially inserted into the stepped hole, the clamping hole and the fastening hole.

6. The fastening mechanism according to claim 5, characterized in that: An internal thread is provided on the hole wall of the fastening hole, and an external thread matching the internal thread is provided on the outer circumferential wall of the second rod portion.

7. The fastening mechanism according to claim 5, characterized in that: An end of the second head portion away from the second rod portion is provided with a special-shaped groove.

8. The fastening mechanism according to claim 7, characterized in that: The orthographic projection shape of the special-shaped groove in a direction perpendicular to the axis of the second rod portion is any one of a semicircle, an ellipse or a polygon.

9. An assembly component, characterized in that: include: first component; Second component; And the fastening mechanism according to any one of claims 1 to 8, wherein the first component is fastened to the second component via the fastening mechanism.

10. The assembly according to claim 9, wherein: The first component is provided with a first assembly hole, the second component is provided with a second assembly hole, the first head portion abuts against a side of the first component away from the second component, the first rod portion is sequentially passed through the first assembly hole and the second assembly hole, the second fastener is clamped with the clamping joint through the clamping hole, and abuts against a side of the second component away from the first component, and the third fastener is sequentially passed through the stepped hole, the clamping hole and the fastening hole to fasten the first component and the second component.

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