Connecting rod

Abstract

The connecting rod comprises a plurality of rod bodies with the ends connected with one another, and the connecting position comprises a first end face and a second end face which are matched with each other; and the axial fastening device is used for applying fastening force in the axial direction to connect the two adjacent rod bodies. When every two adjacent rod bodies are connected, axial pre-tightening force is applied to the two rod bodies through the axial fastening device, then the first end face and the second end face are pressed, the first end face and the second end face are matched in the mode that the first end face and the second end face are correspondingly arranged, and the first end face and the second end face are matched through friction force or corresponding protrusions and recesses. The acting force of the connecting rod and the connecting rod is increased, especially the acting force of the connecting rod and the connecting rod in the circumferential direction, so that the connecting rod and the connecting rod are prevented from moving in the circumferential direction, the two adjacent rod bodies are prevented from moving in the circumferential direction, the two adjacent rod bodies are connected more firmly and stably, and the connecting rod is convenient to store, convenient to extend, splice and expand and capable of guaranteeing connection stability during training. And circumferential and axial movement is prevented.

Description

Technical Field

[0001] The present application relates to the technical field of fitness equipment accessories, and in particular to a connecting rod. Background Art

[0002] When using cable fitness equipment, users interact with the equipment, utilizing the power of the equipment or overcoming the resistance of the equipment to pull the cable to perform exercise. It is common to use a connecting rod to pull the cable for training.

[0003] In the prior art, the connecting rod is usually a whole piece, which is not convenient for storage and cannot be extended, and cannot meet some specific training scenarios. Disassembling the connecting rod for storage and then reassembling it again poses a safety hazard. That is, the connecting rod will be subjected to a large tensile force or torque during training. The non-integral structure is prone to failure at the connection point when it receives the tensile force or torque generated by training, and in serious cases, it may even break. Utility Model Content

[0004] The embodiments of the present application provide a connecting rod that can meet the training or daily use requirements of easy storage, safe training, and flexible expansion.

[0005] A connecting rod according to an embodiment of the present application includes:

[0006] A plurality of rods connected to each other at their ends, wherein the connection comprises a first end face and a second end face that fit together;

[0007] The axial fastening device is used to apply a fastening force in the axial direction to connect adjacent rod bodies.

[0008] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0010] Figure 1 It is a schematic diagram of the overall structure of the connecting rod of the present application;

[0011] Figure 2 It is a schematic diagram of the structure of the connection points of the connecting rods in this application;

[0012] Figure 3 This is a schematic diagram of the structure of a portion of the end connection device in this application connected to the rod body;

[0013] Figure 4 This is a schematic structural diagram of another part of the end connection device in this application being connected to another rod body;

[0014] Figure 5 It is a structural diagram of the cable connection structure in this application;

[0015] Description of main component symbols:

[0016] 100-rod body;

[0017] 200-end connection device;

[0018] 211 - first connecting portion, 212 - second connecting portion, 213 - first end surface, 214 - second end surface, 215 - central axis, 216 - central axis hole;

[0019] 220 - axial fastening device, 221 - sleeve, 222 - casing, 223 - annular ridge, 224 - limiting groove, 225 - sealing ring;

[0020] 230-connecting shaft;

[0021] 300-Rope connection structure. DETAILED DESCRIPTION

[0022] The embodiments of the present application are described in detail below, and 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 should not be understood as limiting the present application.

[0023] 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" 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 cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0025] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0026] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0027] The embodiment of the present application provides a connecting rod, such as Figure 1 As shown, it includes a plurality of rod bodies 100 connected to each other at their ends, and the connection includes a first end face 213 and a second end face 214 that match each other; an axial fastening device 220 is used to apply a fastening force along the axial direction to connect two adjacent rod bodies 100.

[0028] When two adjacent rod bodies 100 are connected, an axial pre-tightening force is applied to the two rod bodies 100 through the axial fastening device 220, thereby pressing the first end face 213 and the second end face 214, wherein the first end face 213 and the second end face 214 are matched to be correspondingly arranged through the first end face 213 and the second end face 214, so that the two increase the force between the two through friction or through corresponding protrusions and depressions, especially the force between the two in the circumferential direction, thereby preventing the two from moving in the circumferential direction, thereby preventing the circumferential movement of the two adjacent rod bodies 100, making the connection between the two adjacent rod bodies 100 more firm and stable, so that the connecting rod can be easily stored and extended, spliced and expanded, and can also ensure the stability of the connection during training to prevent circumferential and axial movement.

[0029] In some embodiments, a plurality of protrusions or grooves are circumferentially provided on the first end face 213, and a plurality of grooves or protrusions are correspondingly provided circumferentially on the second end face 214, that is, the circumferential action force between the two is further increased by the protrusions and grooves. A protrusion can be provided on the first end face 213 and a groove can be provided on the second end face 214, or vice versa, a groove can be provided on the first end face 213 and a protrusion can be provided on the second end face 214. Of course, a protrusion and a groove can also be provided on the first end face 213, and a corresponding protrusion and a groove can be provided on the second end face 214.

[0030] As a further technical solution, the protrusion or groove is triangular. When the axial fastening device 220 brings two adjacent rod bodies 100 close to each other and applies a fastening force, the first end face 213 and the second end face 214 will also approach each other. At this time, the triangular protrusion and groove can be aligned with each other and positioned.

[0031] As a further technical solution, the protrusions or grooves are arranged circumferentially, that is, when the first end face 213 and the second end face 214 approach each other, they can provide axial positioning and guidance, so that the coaxiality of the butt joint of two adjacent rod bodies 100 is higher.

[0032] In some embodiments, one or both of the first end face 213 and the second end face 214 are provided with a friction increasing layer. Specifically, a gasket made of a material with greater friction can be added to the first end face 213 and / or the second end face 214, or a friction increasing coating can be added to the first end face 213 and / or the second end face 214, or a frosted layer with a greater roughness can be provided on the surface of the first end face 213 and / or the second end face 214. By increasing the friction between the two, the force between the end faces can also be increased.

[0033] In some embodiments, a plurality of Alley teeth are circumferentially arranged on the first end face 213 and the second end face 214 , that is, when the first end face 213 and the second end face 214 approach each other, the Alley teeth can provide axial positioning and guidance, so that the coaxiality of the docking of two adjacent rod bodies 100 is higher.

[0034] In some embodiments, the axial fastening device 220 includes a plurality of fixing buckles, which can connect two adjacent rod bodies 100 along the circumferential direction.

[0035] In some embodiments, the axial fastening device 220 includes a sleeve 221 and a sleeve 222, wherein the sleeve 221 and the sleeve 222 are connected by threads and are respectively connected to two adjacent rod bodies 100; wherein at least one of the sleeve 221 and the sleeve 222 is connected to the rod body 100 in a rotational manner. For example, Figure 3 As shown, the sleeve 221 is rotatably connected to the rod body 100, and the sleeve 222 is fixedly connected to the other adjacent rod body 100. Since an annular ridge 223 is provided on the inner side of the sleeve 221, which cooperates with the limiting groove 224 on the rod body 100, the sleeve 221 can only rotate relative to the rod body 100. When connecting, the sleeve 221 is rotated to tighten it with the sleeve 222, and then the two adjacent rod bodies 100 are tightened along the circumferential direction through the annular ridge 223 and the limiting groove 224.

[0036] In some embodiments, an end connection device 200 is further included, wherein the end connection device 200 includes a first connection portion 211 and a second connection portion 212, and a first end face 213 and a second end face 214 are respectively arranged on the first connection portion 211 and the second connection portion 212; the axial fastening device 220 connects the first connection portion 211 and the second connection portion 212 by applying a fastening force along the circumferential direction to connect two adjacent rod bodies 100.

[0037] Exemplarily, the first connecting portion 211 connects the rod body 100, the first end face 213 is arranged on the first connecting portion 211, the second connecting portion 212 is connected to another adjacent rod body 100, and the second end face 214 is arranged on the second connecting portion 212. The first connecting portion 211 and the second connecting portion 212 are connected to each other through the axial fastening device 220. The circumferential fastening device and the first end face 213 and the second end face 214 are all arranged on the end connecting device 200, which can reduce the processing requirements for the rod body 100 and thus reduce costs. At the same time, the rod body 100 can also choose different materials, such as a lighter carbon fiber material or aluminum alloy material.

[0038] In some embodiments, the first connecting portion 211 and / or the second connecting portion 212 are sleeved with the rod body 100 via a connecting shaft 230, wherein the connecting shaft 230 can be screwed to the rod body 100 through threads, or can be fixedly connected by welding or other methods, or a plurality of grooves are opened on the connecting shaft 230 along the busbar direction or along the circumferential direction to facilitate sleeved with the rod body 100, and the grooves can also serve as glue grooves, and glue can be applied thereto during connection to further improve the stability of the connection.

[0039] In some embodiments, one of the first connecting portion 211 and the second connecting portion 212 is provided with a central axis hole 216, and the other is provided with a central axis 215, and the central axis 215 is sleeved with the central axis hole 216. The sleeved connection can further improve the coaxiality of the connection between the two, and can also play a guiding and positioning role during installation.

[0040] In some embodiments, the axial fastening device 220 includes a sleeve 221 and a sleeve 222, wherein the sleeve 221 and the sleeve 222 are connected by threads and are connected to the first connection portion 211 and the second connection portion 212 respectively; wherein at least one of the sleeve 221 and the sleeve 222 is connected to the first connection portion 211 or the second connection portion 212 in a rotational manner; for example, Figure 3 As shown, the sleeve 221 is rotatably connected to the first connecting part 211, and the sleeve 222 is fixedly connected to the second connecting part 212. Since an annular ridge 223 is provided on the inner side of the sleeve 221, which cooperates with the limiting groove 224 on the first connecting part 211, the sleeve 221 can only rotate relative to the first connecting part 211. When connecting, the sleeve 221 is rotated to tighten it with the sleeve 222, and then the first connecting part 211 and the second connecting part 212 are driven to be tightened along the circumferential direction through the annular ridge 223 and the limiting groove 224.

[0041] As a further technical solution, the sleeve 221 is rotatably connected to the first connecting portion 211, and a sealing ring 225 is provided at the rotational friction between the sleeve 221 and the first connecting portion 211, or a sealing ring 225 is provided at the rotational friction between the sleeve 221 and the rod body 100. For example, Figure 3 As shown, a sealing ring 225 is provided at the rotation friction point between the sleeve 221 and the rod body 100. The sealing ring 225 can ensure the sealing of the rotation point and reduce or prevent dust or liquid from entering the connection point.

[0042] In some embodiments, the sleeve 221 is connected to the first connecting portion 211, and an annulus for accommodating the casing 222 is provided between the sleeve 221 and the first connecting portion 211. The cooperation between the annulus and the casing 222 can provide guidance and positioning during installation, increase the coaxiality and stability of the connection between the first connecting portion 211 and the second connecting portion 212, and especially ensure the stability of the connection during training.

[0043] In some embodiments, the first end face 213 and the second end face 214 are located inside the sleeve 222, that is, the sleeve 222 can be nested at the connection between the first end face 213 and the second end face 214, and can also provide guidance and positioning during installation, increase the coaxiality and stability of the connection between the first connection part 211 and the second connection part 212, and especially ensure the stability of the connection during training.

[0044] In some embodiments, a cable connection structure 300 is provided on the end or shaft of the rod body 100. The user can connect the fitness equipment to exercise via the cable connection structure 300.

[0045] As a further technical solution, when the cable connection structure 300 is located at the end, a connecting shaft 230 is provided on the cable connection structure 300, and the connecting shaft 230 is sleeved with the rod body 100, wherein the connecting shaft 230 can be screwed to the rod body 100 through threads, or can be fixedly connected by welding or other methods, or a plurality of grooves are opened on the connecting shaft 230 along the busbar direction or along the circumferential direction to facilitate sleeved with the rod body 100, and the grooves can also be used as glue grooves, and glue can be applied thereto during connection to further improve the stability of the connection.

[0046] Throughout this specification, reference to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A connecting rod, characterized in that: include: A plurality of rods connected to each other at their ends, wherein the connection comprises a first end face and a second end face that fit together; The axial fastening device is used to apply a fastening force in the axial direction to connect adjacent rod bodies.

2. The connecting rod according to claim 1, characterized in that The first end surface is provided with a plurality of protrusions and / or grooves along the circumference, and the second end surface is provided with a plurality of grooves and / or protrusions along the circumference correspondingly; and / or one or both of the first end surface and the second end surface are provided with a friction increasing layer; The protrusion or groove is triangular.

3. The connecting rod according to claim 1, characterized in that A plurality of Alfred teeth are circumferentially arranged on the first end surface and the second end surface.

4. The connecting rod according to claim 1, characterized in that The axial fastening device includes a sleeve and a sleeve, wherein the sleeve and the sleeve are connected by threads and are respectively connected to two adjacent rod bodies; The connection between at least one of the sleeve and the sleeve and the two adjacent rods is a rotational connection.

5. The connecting rod according to claim 1, characterized in that Also included is an end connection device, the end connection device including a first connection portion and a second connection portion, the first end surface and the second end surface being respectively disposed on the first connection portion and the second connection portion; The axial fastening device connects the first connecting portion and the second connecting portion by applying a fastening force along the circumferential direction, so as to connect two adjacent rod bodies.

6. The connecting rod according to claim 5, characterized in that The first connecting portion and / or the second connecting portion are sleeved with the rod body via a connecting shaft, and / or; One of the first connecting portion and the second connecting portion is provided with a central shaft hole, and the other is provided with a central shaft, and the central shaft is sleeved with the central shaft hole.

7. The connecting rod according to claim 5, characterized in that The axial fastening device includes a sleeve and a sleeve, wherein the sleeve and the sleeve are connected by threads and are connected to the first connecting portion and the second connecting portion respectively; The connection between at least one of the sleeve and the casing and the first connecting part or the second connecting part is a rotational connection.

8. The connecting rod according to claim 7, characterized in that: The sleeve is rotatably connected to the first connecting portion, and a sealing ring is provided at a rotational friction point between the sleeve and the first connecting portion, or; A sealing ring is provided at the rotation friction point between the sleeve and the rod body.

9. The connecting rod according to claim 7, characterized in that: The sleeve is connected to the first connecting portion, an annulus for accommodating the casing is provided between the sleeve and the first connecting portion, and / or; The first end surface and the second end surface are located inside the sleeve.

10. The connecting rod according to any one of claims 1 to 8, characterized in that: A cable connection structure is provided on the end portion or the shaft of the rod body.

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