Patent Application
20220408954
This application is based upon and claims priority to Chinese Patent Application No. 202121417798.1, filed on Jun. 24, 2021, the entire contents of which are incorporated herein by reference.
The present application relates to the technical field of household tools, and in particular to an easy-to-disassemble connecting rod with a cam structure, which is suitable for household use horizontal bars and clothes rails mounted on the door frame or between two walls.
Household fitness horizontal bars and clothes rails mounted on the door frame or between the two walls are generally supported by upward forces generated by the friction between the soft rubber at two ends and the wall surfaces. The greater the pressure on the wall, the greater the friction. The pressure on the wall of the current product on the market derives from adjustment of the length of the product itself and from the inclined surfaces at two ends. The pressure provided by adjusting the length of the product itself is very small, and as time goes by, the pressure may gradually decrease, and the friction force may also decrease accordingly, resulting in fall of the product. The structure of inclined surfaces at two ends may continuously generate pressure on the wall or door frame via the downward force exerted on the product, so that the product is not easy to fall off, and is not easy to mount or disassemble either. The lateral tolerance provided by the inclined surface itself is very small, and to install the product, the length of the product is required to perfectly match with the wall or the door frame, exerting a pre-pressure on the door frames and the walls on two sides. To remove the product, it is required to adjust the length of the product.
To this end, an easy-to-disassemble connecting rod with a cam structure is provided according to the present application to solve the above-mentioned problems in the conventional technology.
In order to achieve the above object, the following technical solutions are provided according to the present application.
According to an aspect of the present application, an easy-to-disassemble connecting rod with a cam structure is provided, which includes a connecting rod and cams. Two ends of the connecting rod are hinged with the cams. An outer side surface of each cam includes an arc surface, a radius of curvature of the arc surface of each cam around a shaft hole gradually increases, and rotation directions of the two cams are opposite.
Further, a shaft hole is defined on each cam, and two ends of the connecting rod are each provided with a rotating shaft, the shaft hole of each cam is fitted on the corresponding rotating shaft, and each cam rotates around the corresponding rotating shaft.
Further, a distance between an edge point on the arc surface of each cam and the center of the corresponding shaft hole gradually increases along the rotation direction of this cam.
Further, each cam has an involute shape.
Further, the arc surface of each cam is made of non-slip material.
Further, the arc surface of each cam is provided with a gear surface.
Further, the gear surface of each cam is configured to abut against a wall supporting surface, and the wall supporting surface is provided with tooth grooves adapted to the gear surface of the cam.
Further, each rotating shaft is connected with a connecting cap, and the connecting cap is nested on the connecting rod.
The present application has the following advantages. In the easy-to-disassemble connecting rod with a cam structure provided by the present application, two ends of the rod contact with the supporting surface via the cams, the pressure on the wall is increased or decreased via radius change caused by the rotation of the cams, and further the friction force is increased or decreased, so as to achieve safe and rapid installation or disassembly.
In order to illustrate the technical solutions in the embodiments of the present application or in the conventional technology more clearly, the drawings referred to for describing the embodiments or the conventional technology are briefly described below. It is apparent that the drawings in the following description are only exemplary. For those of ordinary skill in the art, other implementation drawings can be derived from the provided drawings without any creative work.
The structure, proportion, and size shown in the specification are only used to match the contents disclosed in the specification for those skilled in the art to understand and read and are not intend to limit the conditions under which the present application can be implemented, having no technically significance. Any modification of structure, change of proportional relationship, or adjustment of size should still fall within the scope of the technical content disclosed in the present application without affecting the efficacy and purpose of the present application.
In the drawings: 1 connecting rod, 2 cam, 3 shaft hole, 4 wall supporting surface.
The embodiments of the present application are illustrated below by the specific embodiments. Those familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification. It is apparent that the described embodiments are only some rather than all of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those having ordinary skill in the art without creative work shall fall within the protection scope of the present application.
As shown in
It should be noted that in this embodiment, a distance between the connecting rod 1 and a wall supporting surface 4 can be readily changed by means of the cams 2, providing a connecting rod structure that is safe and easy to install or disassemble. When the connecting rod 1 is installed, the connecting rod 1 is pulled down, the cams 2 rotate, a radius of curvature at the contact between each cam 2 and the wall supporting surface 4 becomes larger, the pressure on the wall supporting surface 4 also increases, and the friction force generated also increases. The greater the downward force, the greater the pressure on the wall supporting surface 4, and the greater the friction force, thereby achieving quick and safe installation. When the connecting rod 1 is disassembled, the connecting rod 1 is lifted up, the cams 2 rotate reversely, and the radius of curvature at the contact between each cam 2 and the wall supporting surface 4 becomes smaller, so that the cams 2 are separated from the wall supporting surface 4, and the connecting rod 1 is removed.
The technical effects achieved by the above embodiment are as follows. In the easy-to-disassemble connecting rod with a cam structure of the present embodiment, two ends of the rod contact with the supporting surface via the cams 2, the pressure on the wall is increased or decreased via radius change caused by rotation of the cams 2, and further the friction force is increased or decreased, so as to achieve safe and rapid installation or disassembly.
In an embodiment, as shown in
In the above optional embodiments, it should be noted that, the shaft hole 3 is preferably a round hole, and the rotating shaft is preferably a round shaft.
The beneficial effects of the above optional embodiments are as follows: through the shaft hole 3 defined on each cam 2, the flexibility of the rotation of the cam 2 is significantly improved.
Preferably, as shown in
The beneficial effects of the above optional embodiments are as follows: through the above arrangement, it is ensured that the friction between each cam 2 and the wall supporting surface 4 is continuously increased during the rotation of the cams 2, thereby enhancing the fixing strength of the connecting rod 1; and when the cams 2 rotate reversely, the distance between the surface of each cam 2 and the wall supporting surface 4 is reduced, thereby facilitating the removal of the connecting rod 1.
Optionally, as shown in
In the above optional embodiments, it should be noted that, each cam 2 may have a structure that can continuously increase the friction between the connecting rod 1 and the wall supporting surface 4.
The beneficial effects of the above optional embodiments are as follows: through the above arrangement, the processing of the connecting rod is simple and the manufacturing cost thereof is significantly reduced.
Optionally, as shown in
In the above optional embodiments, it should be noted that, for example, a non-slip rubber is provided on the surface of each cam 2.
The beneficial effects of the above optional embodiments are as follows: by means of the cams 2 made of non-slip material, the friction between each cam 2 and the wall supporting surface 4 is significantly improved.
Optionally, as shown in
In the above optional embodiments, it should be noted that, granular or striped anti-skid protrusions may also be provided on the surface of each cam 2.
Optionally, as shown in
The beneficial effects of the above optional embodiments are as follows: by providing a gear surface on each cam 2 and defining tooth grooves on the wall supporting surface 4, the fixing effect between each cam 2 and the wall supporting surface 4 is significantly improved.
Optionally, as shown in
The beneficial effects of the above optional embodiments are as follows: through the connecting cap structure, the cam structure can be processed and produced separately, reducing the production difficulty and manufacturing cost, and at the same time, it is convenient to disassemble and replace the connecting rod and the cam.
Although the present application has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made thereto on the basis of the present application, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present application belong to the protection scope of the present application.
Terms such as “upper”, “lower”, “left”, “right” and “middle” quoted in this specification are only for convenience of description and clarity, and are not intended to limit the application scope of the present application. The change or adjustment of the relative relationship without substantively changing the technical content should be regarded as the scope of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202121417798.1 | Jun 2021 | CN | national |
