Connecting assembly, connecting device and fitness equipment
By using the plug-in structure of pipe fittings and bushings, combined with square tubes and flanged fixtures, the problems of high welding connection costs and deformation are solved, achieving stable connection and multi-directional load-bearing capacity, reducing production costs and improving product quality.
Patent Information
- Application Number
- CN202520758965.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-21
AI Technical Summary
Welding is expensive and can easily cause material deformation when connecting different materials, affecting structural accuracy and increasing production costs.
The tube and bushing are connected by a plug-in structure. The tube has multiple holes and protrusions. After the bushing is plugged into the tube, a flanging fixture is used to form a stable connection, avoiding welding. Combined with the bending resistance of the square tube and the appropriate protrusion design, multi-directional load-bearing is achieved.
It reduces welding costs between different materials, minimizes secondary processing costs caused by welding deformation, improves product quality and stability, and is suitable for multi-directional stress scenarios.
Smart Images
Figure CN223964723U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connectors, specifically to a connecting component, a connecting device, and fitness equipment. Background Technology
[0002] Bushings are widely used in various fields, and there are various ways to fix them. The most common method is welding, but welding is limited by materials, and welding between different materials is expensive and difficult. Some products have production costs increased due to their own limitations, and the connection between pipes and bushings is often welded. However, welding can cause material deformation and affect structural accuracy. Utility Model Content
[0003] The purpose of this utility model is to overcome the above-mentioned defects or problems existing in the background art or to provide a material basis for overcoming the above-mentioned defects or problems existing in the background art, and to provide a connecting component, a connecting device and fitness equipment.
[0004] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:
[0005] Option 1, a connection component, including
[0006] A pipe fitting has a first surface and a second surface arranged along a first direction, the first surface and the second surface being opposite to each other. The pipe fitting also has a first hole, a second hole and a third hole arranged sequentially along the first direction. One end of the first hole opens into the first surface, and the other end opens into and communicates with the second hole. The second hole has a first wall surface facing the first hole. One end of the third hole opens into the first wall surface, and the other end opens into the second surface. The size of the third hole is smaller than the size of the first hole.
[0007] A bushing, adapted to be inserted into the pipe fitting along a first direction, includes a first protrusion, a second protrusion, and a third protrusion arranged sequentially along the first direction; the first protrusion is adapted to abut against the first surface along the first direction, the second protrusion is adapted to abut against the first wall surface, and the third protrusion is adapted to extend out of the third hole; the bushing also has a shaft hole, the shaft hole being at least provided in the third protrusion, so that the third protrusion is adapted to be flanged to abut against the second surface.
[0008] Option 2, based on Option 1, adapts the shape of the first wall surface to the surface shape of the second protrusion facing the first wall surface.
[0009] Option 3, based on Option 2, involves the first wall surface being a plane, and the surface of the second protrusion facing the first wall surface being a plane parallel to the first wall surface.
[0010] Option 4, based on Option 1, wherein the fitting is a square tube and extends in a direction perpendicular to the first direction.
[0011] Option 5, based on Option 4, involves the second hole penetrating the pipe fitting in a direction perpendicular to the first direction.
[0012] Option 6, based on Option 1, wherein the first hole and the third hole are circular holes, and the first protrusion and the second protrusion are cylinders.
[0013] Option 7, based on Option 1, involves the shaft hole penetrating the bushing along the first direction.
[0014] Option 8, a connecting device, comprising a connecting component as described in any one of Options 1 to 7, wherein the third protrusion forms a connecting portion and a flange portion, the two ends of the connecting portion are connected to the second protrusion and the flange portion, and the flange portion abuts against the second surface.
[0015] Option 9, a fitness equipment, including a connection device as described in Option 8.
[0016] As can be seen from the above description of the present invention and its preferred embodiments, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:
[0017] 1. In Scheme 1 and its preferred embodiments, a connecting component includes a pipe and a bushing.
[0018] The pipe fitting has a first surface and a second surface arranged along a first direction, the first surface and the second surface being opposite to each other. The pipe fitting also has a first hole, a second hole and a third hole arranged sequentially along the first direction.
[0019] One end of the first hole opens onto the first surface, and the other end opens to communicate with the second hole. The second hole has a first wall facing the first hole. One end of the third hole opens onto the first wall, and the other end opens onto the second surface. The size of the third hole is smaller than the size of the first hole.
[0020] The bushing includes a first protrusion, a second protrusion, and a third protrusion arranged sequentially along a first direction. The bushing is adapted to be inserted into a pipe fitting along the first direction. When inserted, the first protrusion abuts against a first surface along the first direction, the second protrusion abuts against a first wall surface, and the third protrusion extends out of a third hole. The bushing also has a shaft hole, at least located in the third protrusion, to allow the third protrusion to be flanged to abut against a second surface. After flanged using the aforementioned connecting assembly, since the first and second surfaces are opposite to each other, the bushing is positioned relative to the pipe fitting along the first direction and in the opposite direction, achieving a stable connection. This provides a material basis for reducing the cost of welding between different materials and minimizing the cost of secondary processing due to welding deformation.
[0021] Furthermore, since the second protrusion contacts the first wall surface, it provides support and can prevent the pipe from deforming due to subsequent flanging, thereby improving the quality of the product after flanging.
[0022] 2. In Scheme 2 and its preferred embodiments, the shape of the first wall surface is adapted to the surface shape of the second protrusion facing the first wall surface, thereby increasing the contact area and increasing the support strength.
[0023] 3. In Scheme 3 and its preferred embodiments, the first wall surface is a plane, and the surface of the second protrusion facing the first wall surface is a plane parallel to the first wall surface, which facilitates processing and allows for a larger area of contact.
[0024] 4. In Scheme 4 and its preferred embodiments, the fitting is a square tube extending in a direction perpendicular to the first direction. Square tubes have stronger bending resistance; their cross-sectional shape (rectangular or square) results in a larger moment of inertia under vertical loads, leading to superior bending performance. Multi-directional load-bearing is balanced; the symmetry of the square tube ensures consistent load-bearing capacity in both horizontal and vertical directions, making it suitable for scenarios requiring multi-directional force.
[0025] 5. In Scheme 5 and its preferred embodiments, the second hole penetrates the pipe fitting in a direction perpendicular to the first direction, which facilitates the processing of the shape of the second hole and saves materials.
[0026] 6. In Scheme 6 and its preferred embodiments, the first hole and the third hole are round holes, and the first convex part and the second convex part are cylinders, which facilitates the realization of functions such as rotation of the pipe fitting and the bushing.
[0027] 7. In Scheme 7 and its preferred embodiments, the shaft hole penetrates the bushing along the first direction, which facilitates machining.
[0028] 8. In Scheme 8 and its preferred embodiments, a connecting device includes the above-mentioned connecting component, a third protrusion forming connecting portion and a flange portion, the two ends of the connecting portion are connected to the second protrusion and the flange portion, and the flange portion abuts against the second surface, thereby achieving a stable connection and having the beneficial effects brought about by the above-mentioned connecting component.
[0029] 9. A fitness equipment comprising the above-mentioned connecting device and having the beneficial effects brought about by the above-mentioned connecting device. Attached Figure Description
[0030] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1This is a perspective view of the pipe fitting in Example 1;
[0032] Figure 2 This is a perspective view of the flanged front axle sleeve in Example 1;
[0033] Figure 3 This is a perspective view of the flanged bushing in Example 1;
[0034] Figure 4 This is a perspective view of the bushing and pipe fitting being inserted in Example 1;
[0035] Figure 5 This is a schematic diagram of the structure when the bushing and the pipe are inserted in Example 1;
[0036] Figure 6 This is a perspective view of the bushing after it has been flanged and is fitted with the pipe fitting in Example 1;
[0037] Figure 7 This is a schematic diagram of the structure when the bushing is flanged and fitted with the pipe fitting in Example 1;
[0038] Explanation of key figure labels:
[0039] Pipe fitting 1; First surface 11; Second surface 12; First hole 13; Second hole 14; First wall surface 141; Third hole 15; Bushing 2; First protrusion 21; Second protrusion 22; Third protrusion 23; Connecting part 231; Flanged part 232; Shaft hole 24; First direction 3; Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0041] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and drawings of this utility model is for distinguishing different objects and not for describing a specific order.
[0042] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of the invention.
[0043] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this utility model shall be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection through other devices or components.
[0044] In the claims, description and accompanying drawings of this utility model, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."
[0045] refer to Figures 1-7 A connecting assembly includes a pipe fitting 1 and a bushing 2.
[0046] In this embodiment, reference is made to Figure 1 The fitting 1 can be an aluminum tube. In this embodiment, the fitting 1 is rectangular in shape, specifically a square tube, and extends along a direction perpendicular to the first direction 3. The fitting 1 has a first surface 11 and a second surface 12 arranged along the first direction 3, which are opposite to each other and are planar. The fitting 1 also has a first hole 13, a second hole 14, and a third hole 15 arranged sequentially along the first direction 3.
[0047] The first hole 13 is a circular hole, with one end opening onto the first surface 11 and the other end opening into the wall of the second hole 14 to communicate with it. The second hole 14 has a first wall surface 141 facing the first hole 13. The first wall surface 141 is planar and parallel to the first surface 11. The second hole 14 penetrates the pipe 1 in a direction perpendicular to the first direction 3. In this embodiment, the extension direction of the second hole 14 is the same as the extension direction of the pipe 1. The second hole 14 is a square hole. The third hole 15 is a circular hole, with one end opening onto the first wall surface 141 and the other end opening onto the second surface 12. The size of the third hole 15 is smaller than the size of the first hole 13.
[0048] refer to Figure 2 , Figure 5 The bushing 2 can be made of Q235 steel. The bushing 2 is suitable for insertion into the pipe fitting 1 along the first direction 3. The bushing 2 includes a first protrusion 21, a second protrusion 22, and a third protrusion 23 arranged sequentially along the first direction 3. The bushing 2 is suitable for stable assembly with the pipe fitting 1 using a flanged fixture. (Reference) Figure 2 When the flange is not turned up, the first protrusion 21, the second protrusion 22 and the third protrusion 23 are all cylinders.
[0049] refer to Figure 5 The size of the first protrusion 21 is larger than the size of the first hole 13, so that when the bushing 2 is inserted into the pipe fitting 1, the first protrusion 21 abuts against the first surface 11 along the first direction 3. The size of the second protrusion 22 is smaller than or equal to the size of the first hole 13 and larger than the size of the third hole 15, so that when the bushing 2 is inserted into the pipe fitting 1, the second protrusion 22 extends into the second hole 14 and abuts against the first wall surface 141. The surface shape of the second protrusion 22 facing the first wall surface 141 is adapted. In this embodiment, the surface of the second protrusion 22 facing the first wall surface 141 is a plane parallel to the first wall surface 141. When not flanged, the size of the third protrusion 23 is smaller than or equal to the size of the third hole 15, so that when the bushing 2 is inserted into the pipe fitting 1, the third protrusion 23 extends out of the third hole 15.
[0050] The bushing 2 is also provided with a shaft hole 24, which is provided at least in the third protrusion 23 so that the third protrusion 23 is adapted to be flanged to abut against the second surface 12. In this embodiment, the shaft hole 24 penetrates the bushing 2 along the first direction 3, that is, the shaft hole 24 passes through the first protrusion 21, the second protrusion 22 and the third protrusion 23.
[0051] refer to Figure 3 , Figure 7 The third protrusion 23 forms a connecting portion 231 and a flanged portion 232 by means of a flanged fixture. The two ends of the connecting portion 231 are connected to the second protrusion 22 and the flanged portion 232. The flanged portion 232 abuts against the second surface 12 to achieve stable assembly of the bushing 2 and the pipe fitting 1. Thus, the above-mentioned connecting assembly forms a connecting device.
[0052] refer to Figure 5 During processing, the bushing 2 is first inserted into the pipe fitting 1, so that the first protrusion 21 abuts against the first surface 11 along the first direction 3, the second protrusion 22 extends into the second hole 14 and abuts against the first wall surface 141, and the third protrusion 23 extends out of the third hole 15. (Reference) Figure 7 Then, the shaft hole 24 is acted upon by the flanging fixture to flanging the third protrusion 23 and flattening the third protrusion 23 until it abuts against the second surface 12, thus completing the processing.
[0053] This connecting device can be used as a component of fitness equipment or other products.
[0054] Compared with the prior art, this embodiment has the following beneficial effects:
[0055] In one exemplary embodiment, a connecting assembly includes a pipe 1 and a bushing 2.
[0056] Pipe fitting 1 has a first surface 11 and a second surface 12 arranged along the first direction 3, the first surface 11 and the second surface 12 being opposite to each other. Pipe fitting 1 also has a first hole 13, a second hole 14 and a third hole 15 arranged sequentially along the first direction 3.
[0057] One end of the first hole 13 opens onto the first surface 11, and the other end opens to communicate with the second hole 14. The second hole 14 is provided with a first wall surface 141 facing the first hole 13. One end of the third hole 15 opens onto the first wall surface 141, and the other end opens onto the second surface 12. The size of the third hole 15 is smaller than the size of the first hole 13.
[0058] The bushing 2 includes a first protrusion 21, a second protrusion 22, and a third protrusion 23 arranged sequentially along a first direction 3. The bushing 2 is adapted to be inserted into the pipe fitting 1 along the first direction 3. When the insertion is completed, the first protrusion 21 abuts against the first surface 11 along the first direction 3, the second protrusion 22 abuts against the first wall surface 141, and the third protrusion 23 extends out of the third hole 15. The bushing 2 is also provided with a shaft hole 24, which is provided at least in the third protrusion 23 so that the third protrusion 23 is adapted to be flanged to abut against the second surface 12. After the flange is completed using the above-mentioned connecting assembly, since the first surface 11 and the second surface 12 are opposite to each other, the bushing 2 is limited relative to the pipe fitting 1 in the first direction 3 and the opposite direction of the first direction 3, thus achieving a stable connection. This provides a material basis for reducing the cost of welding between different materials and reducing the cost of secondary processing due to welding deformation.
[0059] Furthermore, since the second protrusion 22 contacts the first wall surface 141, it plays a supporting role, which can prevent the pipe fitting 1 from deforming due to subsequent flanging and improve the quality of the product after flanging.
[0060] In one exemplary embodiment, the shape of the first wall surface 141 is adapted to the surface shape of the second protrusion 22 facing the first wall surface 141, thereby increasing the contact area and increasing the support strength.
[0061] In one exemplary embodiment, the first wall surface 141 is a plane, and the surface of the second protrusion 22 facing the first wall surface 141 is a plane parallel to the first wall surface 141, which facilitates processing and allows for a larger area of contact.
[0062] In one exemplary embodiment, the fitting 1 is a square tube extending in a direction perpendicular to the first direction 3. Square tubes have stronger bending resistance; their cross-sectional shape (rectangular or square) results in a larger moment of inertia under vertical loads, leading to superior bending performance. The symmetry of the square tube ensures balanced load-bearing capacity in both horizontal and vertical directions, making it suitable for scenarios requiring multi-directional forces.
[0063] In one exemplary embodiment, the second hole 14 penetrates the pipe 1 in a direction perpendicular to the first direction 3, which facilitates the processing of the shape of the second hole 14 and saves materials.
[0064] In one exemplary embodiment, the first hole 13 and the third hole 15 are round holes, and the first protrusion 21 and the second protrusion 22 are cylinders, which facilitates the realization of functions such as rotation of the pipe and the bushing.
[0065] In one exemplary embodiment, the shaft hole 24 passes through the bushing 2 along the first direction 3, which facilitates processing.
[0066] In one exemplary embodiment, a connecting device includes the connecting component described above. The third protrusion 23 is adapted to form a connecting portion 231 and a flanged portion 232 by means of a flanged jig. The two ends of the connecting portion 231 are connected to the second protrusion 22 and the flanged portion 232. The flanged portion 232 abuts against the second surface 12, thereby achieving a stable connection and having the beneficial effects brought about by the connecting component described above.
[0067] In one exemplary embodiment, a fitness device includes the aforementioned connecting device and has the beneficial effects brought about by the aforementioned connecting device.
[0068] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this utility model, but does not constitute a limitation on the scope of protection of this utility model. Modifications, equivalent substitutions, or other improvements to the embodiments of this utility model or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this utility model or the foregoing embodiments, should all be included within the scope of protection of this utility model.
Claims
1. A connecting component, characterized in that: include The pipe fitting (1) has a first surface (11) and a second surface (12) arranged along a first direction (3), the first surface (11) and the second surface (12) being opposite to each other. The pipe fitting (1) also has a first hole (13), a second hole (14) and a third hole (15) arranged sequentially along the first direction (3). One end of the first hole (13) opens into the first surface (11), and the other end opens into the second hole (14). The second hole (14) has a first wall surface (141) facing the first hole (13). One end of the third hole (15) opens into the first wall surface (141), and the other end opens into the second surface (12). The size of the third hole (15) is smaller than the size of the first hole (13). A bushing (2) adapted to be inserted into the pipe fitting (1) along a first direction (3) includes a first protrusion (21), a second protrusion (22) and a third protrusion (23) arranged sequentially along the first direction (3); the first protrusion (21) is adapted to abut against the first surface (11) along the first direction (3), the second protrusion (22) is adapted to abut against the first wall surface (141), and the third protrusion (23) is adapted to extend out of the third hole (15); the bushing (2) is also provided with a shaft hole (24), the shaft hole (24) is provided at least in the third protrusion (23) so that the third protrusion (23) is adapted to be flanged to abut against the second surface (12).
2. A connection component as described in claim 1, characterized in that: The shape of the first wall surface (141) is adapted to the surface shape of the second protrusion (22) facing the first wall surface (141).
3. A connection component as described in claim 2, characterized in that: The first wall surface (141) is a plane, and the surface of the second protrusion (22) facing the first wall surface (141) is a plane parallel to the first wall surface (141).
4. A connection component as described in claim 1, characterized in that: The fitting (1) is a square tube and extends in a direction perpendicular to the first direction (3).
5. A connection component as described in claim 4, characterized in that: The second hole (14) penetrates the pipe (1) in a direction perpendicular to the first direction (3).
6. A connection component as described in claim 1, characterized in that: The first hole (13) and the third hole (15) are round holes, and the first protrusion (21) and the second protrusion (22) are cylinders.
7. A connection component as described in claim 1, characterized in that: The shaft hole (24) passes through the bushing (2) along the first direction (3).
8. A connecting device, characterized in that: The assembly includes a connecting component as described in any one of claims 1-7, wherein the third protrusion (23) forms a connecting portion (231) and a flange portion (232), the two ends of the connecting portion (231) are connected to the second protrusion (22) and the flange portion (232), and the flange portion (232) abuts against the second surface (12).
9. A fitness equipment, characterized in that: Includes a connection device as described in claim 8.