Belt pulley, take-up device and rowing machine

Abstract

The utility model relates to the technical field of sports equipment accessories, and provides a belt pulley which comprises a plastic disk, a metal disk and a one-way bearing sleeve. The plastic disc comprises a disc body and an installation column, the disc body is provided with an embedding groove in the circumferential direction of the disc body, the installation column and the disc body are coaxially arranged, and the installation column is located in the embedding groove; the metal disc is embedded in the caulking groove, the mounting column is sleeved with the metal disc, the inner side wall of the metal disc extends into the mounting column, and one end of the one-way bearing sleeve is arranged on the inner side wall of the metal disc; the end, close to the one-way bearing sleeve, of the metal disc is pressed and concaved towards the other end of the metal disc in the circumferential direction of the metal disc to form a pressing and concaving part, and the side, close to the one-way bearing sleeve, of the pressing and concaving part is provided with a receding groove. Therefore, the overall structural strength of the belt pulley can be improved while the production cost of the belt pulley is considered. In addition, the utility model further provides a take-up device and a rowing machine.

Description

Technical Field

[0001] The present application relates to the field of sports equipment accessories, and in particular to a belt pulley, a wire take-up device and a rowing machine. Background Art

[0002] The rowing machine is a common household exercise equipment, which can fully exercise the muscles of the whole body, especially the muscles of the legs, waist, upper limbs, chest and back. Among them, the wire take-up device is a more important part of the rowing machine.

[0003] In the related art, the wire-receiving device includes a belt pulley and a wire-receiving reel. The belt pulley is usually made of plastic. A metal connector is embedded in one end of the belt pulley close to the wire-receiving reel. The one-way bearing sleeve is fixedly connected to the metal connector by welding, so that the one-way bearing sleeve is installed on the belt pulley, so that the belt pulley is connected to the wire-receiving reel through the one-way bearing sleeve, and an installation groove for the bearing to be installed is provided at one end of the belt pulley away from the wire-receiving reel to ensure the wire-receiving operation of the wire-receiving device. Among them, a clearance groove is provided along the circumference of the end of the belt pulley close to the wire-receiving reel, so that when the belt pulley and the wire-receiving reel rotate relative to each other, the belt pulley can make way for the wire head at one end of the wire-receiving reel.

[0004] However, in actual applications, due to the size requirements of some rowing machines, the belt pulley needs to be thinner, but the belt pulley is made of plastic and has a clearance groove along its circumference, resulting in the overall structural strength of the belt pulley being low and easy to damage, so it needs to be improved. Utility Model Content

[0005] In order to take into account the production cost of the belt pulley while improving the overall structural strength of the belt pulley, in a first aspect, the present application provides a belt pulley.

[0006] The present application provides a belt pulley adopting the following technical solution:

[0007] A belt pulley comprises a plastic pulley, a metal pulley and a one-way bearing sleeve; the plastic pulley comprises a pulley body and a mounting post, the pulley body is provided with an embedding groove along its circumference, the mounting post is coaxially arranged with the pulley body, and the mounting post is located in the embedding groove; the metal pulley is embedded in the embedding groove, the metal pulley is sleeved on the mounting post and the inner side wall extends into the mounting post, and one end of the one-way bearing sleeve is arranged on the inner side wall of the metal pulley; one end of the metal pulley close to the one-way bearing sleeve is pressed toward the other end along its circumference to form a concave portion, and the concave portion has a yield groove on the side close to the one-way bearing sleeve.

[0008] By adopting the above technical solution, in actual application, the disk body and the mounting column of the plastic disk are injection molded by a mold and fixed to the metal disk, so that the metal disk is embedded in the embedding groove of the disk body and the mounting column is fixed in the metal disk. Since the inner side wall of the metal disk extends into the mounting column, the one-way bearing sleeve can be welded and fixed to the inner side wall of the metal disk, and the bearing can also be installed through the mounting column. The clearance groove of the metal disk allows the thread head to make way, so that the belt pulley can ensure normal operation;

[0009] Among them, the metal disc is made of metal material, and the metal disc supports the disc body. Even if the thickness of the disc body is thin, the overall structural strength of the belt pulley can be guaranteed. Moreover, the thickness of the metal disc is thin and it is convenient to be injection molded with the plastic disc to ensure that the production cost of the belt pulley is low. Therefore, it is possible to take into account the production cost of the belt pulley while improving the overall structural strength of the belt pulley.

[0010] Preferably, the plastic disk further comprises a plurality of reinforcing ribs, which are arranged at one end of the disk body away from the one-way bearing sleeve and are spaced apart along the circumference of the disk body, and each of the reinforcing ribs is connected to the disk body, the mounting column and the depressed portion.

[0011] By adopting the above technical solution, a plurality of reinforcing ribs are provided to realize the connection between the disc body, the mounting column and the pressed concave portion, so that the fixation between the plastic disc and the metal disc is more stable, and the overall structural strength of the belt pulley is further improved.

[0012] Preferably, the plastic plate further includes a plurality of reinforcing blocks, the number of the reinforcing blocks matches the number of the reinforcing ribs, each of the reinforcing blocks is arranged on each of the reinforcing ribs, and the reinforcing blocks are connected to the plate body and the metal plate.

[0013] By adopting the above technical solution and providing a reinforcing block, the stability of the fixation between the plastic plate and the metal plate is further improved.

[0014] Preferably, a connection groove is provided along the circumference of the disc body at one end away from the one-way bearing sleeve, and the reinforcing rib is provided in the connection groove so that the reinforcing rib is flush with one end of the disc body and one end of the mounting column.

[0015] By adopting the above technical solution and setting the connecting groove, the reinforcing rib is flush with one end of the disc body and one end of the mounting column, so that one end of the belt pulley is smooth and beautiful, and the interference with other parts of the rowing machine can be minimized.

[0016] Preferably, one end of the disc body close to the one-way bearing sleeve is provided with a force application groove along its circumference.

[0017] By adopting the above technical solution and providing a force application groove, it is convenient for workers to apply force to the disc body, thereby facilitating the installation of the belt pulley.

[0018] Preferably, an inner side wall of the metal disk is provided with a reinforcement portion at one end close to the one-way bearing sleeve, and the reinforcement portion is connected to the one-way bearing sleeve.

[0019] By adopting the above technical solution and providing the reinforcement portion, the welding area of ​​the one-way bearing sleeve can be increased, thereby improving the stability of the installation of the one-way bearing sleeve.

[0020] In a second aspect, the present application provides a wire taking-up device.

[0021] The present application provides a wire-taking device that adopts the following technical solution:

[0022] A wire taking-up device comprises the belt pulley described above.

[0023] In a third aspect, the present application provides a rowing machine.

[0024] The rowing machine provided in this application adopts the following technical solution:

[0025] A rowing machine comprises the above-mentioned wire-reeling device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The metal disc is made of metal material, and the metal disc supports the disc body. Even if the disc body is thin, the overall structural strength of the belt disc can be ensured. In addition, the metal disc is thin and easy to be injection molded with the plastic disc to ensure that the production cost of the belt disc is low. Therefore, the production cost of the belt disc can be taken into account while improving the overall structural strength of the belt disc;

[0028] 2. By setting a plurality of reinforcing ribs, the connection between the disc body, the mounting column and the concave portion is realized, so that the fixation between the plastic disc and the metal disc is more stable, and the overall structural strength of the belt disc is further improved;

[0029] 3. By providing the reinforcement part, the welding area of ​​the one-way bearing sleeve can be increased, thereby improving the stability of the installation of the one-way bearing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the belt pulley in the embodiment of the present application;

[0031] Figure 2 It is a schematic diagram of the overall structure of the belt pulley in the embodiment of the present application;

[0032] Figure 3It is a schematic diagram of the cross-sectional structure of the belt pulley in the embodiment of the present application.

[0033] Figure numerals: 1, plastic disk; 11, disk body; 111, embedding groove; 112, connecting groove; 113, force application groove; 12, mounting column; 13, reinforcing rib; 14, reinforcing block; 2, metal disk; 21, pressed concave portion; 22, clearance groove; 23, reinforcing portion; 3, one-way bearing sleeve. DETAILED DESCRIPTION

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The following is combined with Figure 1-3 This application is described in further detail.

[0037] The embodiment of the present application discloses a belt pulley.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The belt pulley includes a plastic pulley 1, a metal pulley 2 and a one-way bearing sleeve 3. The plastic pulley 1 is made of plastic and is formed by an injection mold. Specifically, the plastic pulley 1 includes a pulley body 11 and a mounting post 12. The pulley body 11 is provided with an embedding groove 111 along its circumference. The embedding groove 111 extends to both ends of the pulley body 11, that is, the embedding groove 111 runs through the pulley body 11. The mounting post 12 is coaxially arranged with the pulley body 11, and the mounting post 12 is located in the embedding groove 111 and has the same length as the thickness of the pulley body 11.

[0039] The metal disc 2 is made of metal material. In order to save production costs, in this embodiment, the metal material is iron. The metal disc 2 is arranged in a circular disc shape and embedded in the embedding groove 111. The metal disc 2 is sleeved on the mounting column 12 and the inner side wall extends into the mounting column 12, so that one end of the one-way bearing sleeve 3 can be fixedly connected to the inner side wall of the metal disc 2 by welding. At the same time, one end of the metal disc 2 close to the one-way bearing sleeve 3 is pressed toward the other end along its own circumferential direction to form a pressing concave portion 21, so that the side of the pressing concave portion 21 close to the one-way bearing sleeve 3 has a clearance groove 22 for the thread head located on the take-up reel to make way.

[0040] In actual application, the plastic disc 1 is injection molded by a mold, and the metal disc 2 is placed in the mold when the plastic disc 1 is injection molded to achieve fixation between the plastic disc 1 and the metal disc 2. Specifically, the metal disc 2 is embedded in the embedding groove 111 of the disc body 11, and the metal disc 2 is sleeved on the mounting column 12 and extends into the mounting column 12, so that the one-way bearing sleeve 3 can be fixedly connected to the inner wall of the metal disc 2 by welding to achieve the installation and fixation of the one-way bearing sleeve 3. At the same time, the end of the mounting column 12 away from the one-way bearing sleeve 3 is provided for the bearing to be installed and fixed, and the make way groove 22 located in the pressed concave portion 21 is provided for the wire head located on the take-up disc to make way, that is, the belt pulley can meet the required functions to ensure the normal operation of the belt pulley.

[0041] Among them, the metal disc 2 is made of metal material, and the metal disc 2 supports the disc body 11. Even if the thickness of the disc body 11 is relatively thin, the overall structural strength of the belt pulley can be guaranteed. Moreover, the thickness of the metal disc 2 is relatively thin and it is convenient to be fixed with the plastic disc 1 through mold injection molding to ensure that the production cost of the belt pulley is low. Therefore, it is possible to take into account the production cost of the belt pulley while improving the overall structural strength of the belt pulley.

[0042] Reference Figure 1 In some embodiments, the plastic disc 1 further includes a plurality of reinforcing ribs 13. In this embodiment, six reinforcing ribs 13 are taken as an example for explanation. The six reinforcing ribs 13 are located at one end of the disc body 11 away from the one-way bearing sleeve 3 and are evenly spaced along the circumference of the disc body 11. One end of the reinforcing rib 13 is fixedly connected to the disc body 11, and the other end is fixedly connected to the mounting column 12. One side of the reinforcing rib 13 is fixedly connected to the recessed portion 21 to achieve connection between the disc body 11, the mounting column 12 and the recessed portion 21, so that the disc body 11 and the mounting column 12 are connected as a whole, and the fixation between the plastic disc 1 and the metal disc 2 is more stable, further improving the overall structural strength of the belt disc, thereby improving the service life of the belt disc.

[0043] In some embodiments, the plastic plate 1 also includes a plurality of reinforcing blocks 14, and the number of the reinforcing blocks 14 matches the number of the reinforcing ribs 13, that is, the number of the reinforcing blocks 14 is the same as the number of the reinforcing ribs 13, and each reinforcing block 14 is integrally connected to each reinforcing rib 13, and the reinforcing blocks 14 are fixedly connected to the plate body 11 and the metal plate 2, so that the fixation between the plate body 11, the mounting column 12 and the metal plate 2 is more firmly secured, further improving the stability of the fixation between the plastic plate 1 and the metal plate 2.

[0044] Reference Figure 1 and Figure 3 In some embodiments, a connecting groove 112 is provided along the circumference of the end of the disc body 11 away from the one-way bearing sleeve 3, and the reinforcing rib 13 is located in the connecting groove 112, so that the side of the reinforcing rib 13 away from the metal disc 2 can be flush with one end of the disc body 11 and one end of the mounting column 12, so that one end of the belt pulley is smooth and beautiful, and can minimize interference with other parts of the rowing machine.

[0045] Reference Figure 2 and Figure 3 In some embodiments, a force groove 113 is provided along the circumference of the disc body 11 at one end close to the one-way bearing sleeve 3, so that the staff can apply force to the disc body 11, thereby facilitating the installation and removal of the belt pulley.

[0046] Reference Figure 3 In some embodiments, a reinforcement portion 23 is formed on the inner side wall of the metal disk 2 near one end of the one-way bearing sleeve 3. The reinforcement portion 23 is connected to the one-way bearing sleeve 3, which can effectively increase the contact area between the one-way bearing sleeve 3 and the metal disk 2, thereby increasing the welding area of ​​the one-way bearing sleeve 3, thereby improving the installation stability of the one-way bearing sleeve 3. In addition, the reinforcement portion 23 contacts the installation column 12, which can support the installation column 12 and improve the stability of the fixation between the installation column 12 and the metal disk 2.

[0047] The implementation principle of this embodiment is as follows: in actual application, the plastic disc 1 is injection molded by a mold, and the metal disc 2 is placed in the mold when the plastic disc 1 is injection molded, so as to achieve the fixation between the plastic disc 1 and the metal disc 2. Specifically, the metal disc 2 is embedded in the embedding groove 111 of the disc body 11, and the metal disc 2 is sleeved on the mounting column 12 and extends into the mounting column 12, so that the one-way bearing sleeve 3 can be fixedly connected to the inner wall of the metal disc 2 by welding, so as to achieve the installation and fixation of the one-way bearing sleeve 3. At the same time, the end of the mounting column 12 away from the one-way bearing sleeve 3 is provided for the bearing to be installed and fixed, and the make way groove 22 located in the pressed concave portion 21 is provided for the thread head located on the take-up disc to make way, that is, the belt pulley can meet the required functions to ensure the normal operation of the belt pulley.

[0048] Among them, the metal disc 2 is made of metal material, and the metal disc 2 supports the disc body 11. Even if the thickness of the disc body 11 is relatively thin, the overall structural strength of the belt pulley can be guaranteed. Moreover, the thickness of the metal disc 2 is relatively thin and it is convenient to be fixed with the plastic disc 1 through mold injection molding to ensure that the production cost of the belt pulley is low. Therefore, it is possible to take into account the production cost of the belt pulley while improving the overall structural strength of the belt pulley.

[0049] The embodiment of the present application also discloses a wire taking-up device.

[0050] The wire taking-up device includes the belt pulley described in the above embodiment.

[0051] The embodiment of the present application also discloses a rowing machine.

[0052] The rowing machine includes the wire take-up device described in the above embodiment.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A belt pulley, characterized in that: The invention comprises a plastic disc (1), a metal disc (2) and a one-way bearing sleeve (3); the plastic disc (1) comprises a disc body (11) and a mounting post (12); the disc body (11) is provided with an embedding groove (111) along its circumference; the mounting post (12) is coaxially arranged with the disc body (11), and the mounting post (12) is located in the embedding groove (111); the metal disc (2) is embedded in the embedding groove (111); the metal disc (2) is sleeved on the mounting post (12) and the inner side wall extends into the mounting post (12); one end of the one-way bearing sleeve (3) is arranged on the inner side wall of the metal disc (2); one end of the metal disc (2) close to the one-way bearing sleeve (3) is pressed toward the other end along its circumference to form a pressed concave portion (21), and a side of the pressed concave portion (21) close to the one-way bearing sleeve (3) has a clearance groove (22).

2. A belt pulley according to claim 1, characterized in that: The plastic disc (1) further comprises a plurality of reinforcing ribs (13), the plurality of reinforcing ribs (13) being arranged at one end of the disc body (11) away from the one-way bearing sleeve (3) and spaced apart along the circumference of the disc body (11), and each of the reinforcing ribs (13) being connected to the disc body (11), the mounting column (12) and the depressed portion (21).

3. A belt pulley according to claim 2, characterized in that: The plastic plate (1) further comprises a plurality of reinforcing blocks (14), the number of the reinforcing blocks (14) matches the number of the reinforcing ribs (13), each of the reinforcing blocks (14) is arranged on each of the reinforcing ribs (13), and the reinforcing blocks (14) are connected to the plate body (11) and the metal plate (2).

4. A belt pulley according to claim 2, characterized in that: An end of the disc body (11) away from the one-way bearing sleeve (3) is provided with a connection groove (112) along its circumference, and the reinforcing rib (13) is arranged in the connection groove (112) so that the reinforcing rib (13) is flush with one end of the disc body (11) and one end of the mounting column (12).

5. A belt pulley according to claim 1, characterized in that: One end of the disc body (11) close to the one-way bearing sleeve (3) is provided with a force application groove (113) along its circumference.

6. A belt pulley according to claim 1, characterized in that: An inner side wall of the metal plate (2) is provided with a reinforcement portion (23) at one end close to the one-way bearing sleeve (3), and the reinforcement portion (23) is connected to the one-way bearing sleeve (3).

7. A wire taking-up device, characterized in that: Comprising the belt pulley as described in any one of claims 1-6.

8. A rowing machine, characterized in that: Comprising the wire taking-up device as claimed in claim 7.

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