A lifting mechanism for a rhythm machine and a rhythm machine

Abstract

The present invention discloses a lifting mechanism for a rhythmic machine, characterized in that: the lifting mechanism comprises a base, a lifting surface, a driving member, at least two groups of lifting components and a connecting structure; the base is used to carry the driving member, at least two groups of lifting components and the connecting structure; at least two groups of lifting components, each group of lifting components comprises four connecting rods, and the four connecting rods are hinged to form a diamond-shaped lifting component, wherein two relatively arranged fixed ends on the diamond-shaped lifting component are respectively hinged to the lifting surface and the base, and any free end or both free ends of the other two free ends are connected to the driving member through the connecting structure to form a transmission; the driving member is installed on the base and connected to the connecting structure, and drives the two groups of lifting components to move through the connecting structure; the lifting mechanism and the rhythmic machine provided by the present invention solve the problems of simultaneous vertical force and lateral torque of the existing lifting platform and / or lifting platform connecting rod, and improve the comfort and stability of use.

Description

Technical Field

[0001] The present invention relates to the fitness equipment industry, and in particular to a lifting mechanism for a fitness machine and a fitness machine. Background Art

[0002] As the pace of life and work accelerates, consumers do not have enough time to exercise outdoors, and rhythm machines, as home exercise equipment, have become increasingly popular among consumers.

[0003] The rhythm machine uses a lifting mechanism to achieve high-frequency lifting of the lifting platform, so that consumers can get the same amount of exercise as running; however, the lifting structure of the existing rhythm machine has some defects: poor user experience, easy to damage, and short service life; specifically as follows: during the force transmission process of the existing lifting mechanism, the connecting rod that pushes the lifting platform up and down is subjected to vertical force and lateral torque when it cooperates with the transmission mechanism. The action of the two forces makes the user on the lifting platform in an unstable state, reducing the user experience during the high-frequency lifting process. For example, the patent number is: 200610090741.9, and the patent name is: A simulated qigong cycle vibration fitness training device; it adopts a lever lifting method and swings with the fulcrum as the center of the circle, causing the connecting rod to be subjected to vertical force and lateral torque at the same time. During the movement, the two sides The force in the right direction causes the knees of consumers standing on the lifting platform to be easily injured; for example, the patent number is: 202010338213.0, and the patent name is: A right-angle change-of-direction rhythm machine, which drives the connecting rod to rotate 90° to achieve lifting, and the connecting rod needs to swing greatly, and the torque it is subjected to is large. More importantly, a large driving force is required, which makes the cost of the entire equipment too high. Similarly, it swings in a large direction and at a high frequency through reciprocating swing, which can easily cause damage to the knees of consumers standing on the lifting platform; not only that, the lifting structure of the existing lifting mechanism can only be prepared with metal accessories with high hardness, otherwise it is very easy to break and damage, so the overall weight of the rhythm machine becomes heavier, and the production cost is greatly increased, which leads to a higher sales price and no market competitiveness;

[0004] In summary, the existing rhythm machine needs to be further improved. Summary of the invention

[0005] The purpose of the present invention is to solve the existing problems and provide a lifting mechanism and a rotor for a rotor, which have a simple structure, reasonable design and are easy to implement, and solve the problems of vertical force and lateral torque of the existing lifting platform and / or lifting platform connecting rod, thereby improving the comfort and stability of use.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A lifting mechanism for a rotary machine, characterized in that the lifting mechanism comprises a base, a lifting surface, a driving member, at least two sets of lifting components and a connecting structure;

[0008] A base, which is used to carry the driving member, at least two sets of lifting components and a connecting structure;

[0009] At least two groups of lifting assemblies, each group of lifting assemblies includes four connecting rods, and the four connecting rods are hinged to form a diamond-shaped lifting assembly, wherein two oppositely arranged fixed ends of the diamond-shaped lifting assembly are respectively hinged to the lifting surface and the base, and any one of the other two free ends or both free ends are connected to the driving member through a connecting structure to form a transmission;

[0010] A driving member, which is mounted on the base and connected to the connecting structure, and drives the two groups of diamond-shaped lifting components to move synchronously through the connecting structure;

[0011] The driving member drives the connecting structure to move, so as to link the free ends of the two groups of diamond-shaped lifting components connected thereto to change positions synchronously, so that the lifting surface hinged on the fixed end moves up and down relative to the base.

[0012] Furthermore, the connecting structure includes a transmission shaft, a cam seat and a first connecting member, the cam seat is non-rotatably mounted on the transmission shaft; one end of the first connecting member is sleeved on the cam seat, and the other end is hinged to the free end of the diamond-shaped lifting assembly; wherein the driving member drives the transmission shaft to rotate, and links the cam seats disposed at both ends of the transmission shaft to rotate, thereby driving the first connecting member sleeved on the cam seat to push the free end of the diamond-shaped lifting assembly to change position.

[0013] Furthermore, the lifting mechanism includes first, second, third and fourth groups of diamond-shaped lifting components, and the first and third groups of diamond-shaped lifting components and the second and fourth groups of diamond-shaped lifting components are respectively arranged along both sides of the axis of the transmission shaft; wherein the first and second groups of diamond-shaped lifting components are respectively connected to the two cam seats on the transmission shaft through the first connecting member, and the two cam seats have opposite swinging movement directions when the transmission shaft rotates; the third and fourth groups of diamond-shaped lifting components are respectively connected to the two cam seats on the transmission shaft through the first connecting member, and the two cam seats have opposite swinging movement directions when the transmission shaft rotates.

[0014] Furthermore, it also includes an auxiliary structure, which includes a second connecting member and an auxiliary cam; the auxiliary cam is fixedly mounted on the transmission shaft; one end of the second connecting member is hinged to the other free end of the diamond-shaped lifting component, and the other end is sleeved on the auxiliary cam; wherein the first connecting member, the cam seat corresponding to the second connecting member, and the auxiliary cam, which are hinged in the same group of diamond-shaped lifting structures, have opposite swing displacement directions.

[0015] Furthermore, the driving member is a motor.

[0016] Furthermore, the motor drives the transmission shaft to rotate via a transmission belt.

[0017] Furthermore, the connecting rod of the diamond-shaped lifting assembly is a connecting rod made of nylon.

[0018] A rotor comprises a shell, a fixing seat and a receiving platform; it also comprises the lifting mechanism; the shell and the lifting mechanism are integrally formed or built into the shell; the fixing seat is used to hinge the fixed end of the lifting structure with the base; the receiving platform is connected to the lifting surface or is integrally formed.

[0019] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0020] (1) The lifting mechanism and the rhythm machine provided by the present invention have a simple structure, a reasonable design and are easy to implement. Based on the principle that the deformation of the two groups of diagonal lines of the rhombus decomposes the displacement generated during the transmission process, at least two groups of rhombus lifting components are used to support the lifting surface to drive the lifting surface to move up and down smoothly. Specifically, when the driving member transmits the force to the rhombus lifting component through the connecting structure by using four connecting rods, the lateral torque is eliminated by the rhombus structure composed of four connecting rods, ensuring that the lifting surface only moves in the vertical direction without lateral displacement, thereby improving the comfort during use. More importantly, after eliminating the lateral torque, the stability of the entire lifting structure is better, it is not easy to be damaged, and the service life is longer. It can be assembled with plastic parts to reduce costs. In addition, this structure is simpler to manufacture and has lower costs. The selling price is lower than that of existing rhythm machines, making it more popular with consumers.

[0021] (2) The transmission shaft, cam seat and first connecting member used in the present invention as the connecting structure for transmitting force to the diamond lifting assembly have a simpler structure. The force transmission of at least two diamond lifting assemblies is achieved through one transmission shaft, and it is not easy to lose force during the force transmission process. The lifting function can be achieved by easily driving any free end of the diamond lifting assembly. Compared with the existing lever mechanism and lever plus torsion mechanism, the connecting structure of the present invention is more direct in force transmission and has better stability.

[0022] (3) The present invention uses four groups of diamond-shaped lifting components to ensure stability during the lifting process. The four groups of diamond-shaped lifting components are arranged at the four corners of the lifting surface, and the four groups of diamond-shaped lifting components are realized through a transmission shaft. The force transmission is more synchronous, and the lifting process is close to horizontal. Consumers have a better experience when standing on the lifting surface and exercising;

[0023] (4) The present invention also adds an auxiliary structure. A second connecting member is also provided on each group of diamond-shaped lifting components to ensure and improve the stability of the diamond-shaped lifting components. In the event of failure of the first connecting member, the second connecting member can also be driven. In addition, during the driving process of the first connecting member, the second connecting member can provide auxiliary support, so that the entire structure can be lifted more smoothly, is less prone to deflection, and has better strength and stability performance;

[0024] (5) The connection structure and connecting rod of the present invention can be made of nylon, which not only ensures the strength and wear resistance of the entire lifting mechanism, but also reduces the overall weight of the actuator and the production cost compared with the existing metal parts.

[0025] (6) The rhythm machine described in the present invention has a simple structure, good stability, and low cost. The overall experience and service life are greatly improved, and it is more popular with consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the lifting mechanism of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional exploded structure of the lifting mechanism of the present invention;

[0029] Figure 3 It is a schematic diagram of the three-dimensional exploded structure of the diamond-shaped lifting assembly of the present invention;

[0030] Figure 4 It is a schematic diagram of the movement direction of the diamond-shaped lifting mechanism of the present invention. DETAILED DESCRIPTION

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Rhythm machines are mainly used by consumers (users) to simulate running exercises indoors. They mainly use a lifting mechanism to drive users standing on the lifting platform to rise and fall at high frequencies, so as to relieve tension, dredge meridians, and transmit vibration force to the whole body to achieve exercise effects;

[0033] like Figure 1-4As shown, the present invention is a lifting mechanism for a rotary machine, the lifting mechanism comprising a base 1, a lifting surface 2, a driving member 3, at least two sets of lifting components 4 and a connecting structure 5;

[0034] A base 1, which is used to carry the driving member 3, at least two sets of lifting components 4 and a connecting structure 5;

[0035] At least two groups of lifting components 4, each group of lifting components 4 includes four connecting rods 41, 42, 43, 44 (the connecting rods 41, 42, 43, 44 described in the present invention are connecting rods 41, 42, 43, 44 made of nylon material), and the four connecting rods 41, 42, 43, 44 are hinged to form a diamond-shaped lifting component 4, wherein two oppositely arranged fixed ends 410, 430 on the diamond-shaped lifting component 4 are respectively hinged to the lifting surface 2 and the base 1, and any free end of the other two free ends 420, 440 or both free ends 420, 440 are connected to the driving member 3 through the connecting structure 5 to form a transmission;

[0036] The driving member 3 is installed on the base 1 and connected to the connecting structure 5, and drives the two lifting components 4 to move synchronously through the connecting structure 5. The driving member 3 of the present invention is exemplified by a servo motor, but it can also be other driving members 3. All components with driving functions belong to the category of the driving member 3 of the present invention.

[0037] The connecting structure 5 comprises a transmission shaft 51, a cam seat 52 and a first connecting member 53. The cam seat 52 is fixedly mounted on the transmission shaft 51. One end 531 of the first connecting member 53 is sleeved on the cam seat 52, and the other end 532 is hinged to the free end 420 of the diamond lifting assembly 4. The driving member 3 drives the transmission shaft 51 to rotate, and the cam seats 52 arranged at both ends of the transmission shaft 51 are linked to rotate, so as to drive the first connecting member 53 sleeved on the cam seat 52 to push the free ends 420 and 440 of the diamond lifting assembly 4 to change position.

[0038] The driving member 3 drives the connecting structure 5 to move, so as to synchronously change the positions of the free ends 420 and 440 of the rhombus lifting assembly 4 connected thereto, so that the lifting surface 2 hinged on the fixed ends 410 and 430 moves up and down relative to the base 1.

[0039] Specific implementation method, such as Figure 1-4 As shown, the present invention is illustrated by taking a motor having four groups of diamond-shaped lifting components as an example, and the motor mainly includes the following components: a housing 1, a fixing seat 9, a receiving platform 2, a motor 3, a first group, a second group, a third group, and a fourth group of diamond-shaped lifting components 4A, 4B, 4C, 4D, a transmission shaft 51, a plurality of cam seats 52, a plurality of first connecting members 53, a plurality of second connecting members 6, and a plurality of auxiliary cams 7;

[0040] During actual assembly and use, (1) hinge seats 9 (i.e., fixed seats 9) are arranged at four points inside the shell 1 for subsequent hinge connection with the fixed ends 410, 430 of the diamond lifting assembly 4; (2) two bearing seats A are arranged inside the shell 1 for rotatable attachment of the transmission shaft 51; (3) the motor 3 (servo motor) is fixed inside the shell 1, and the output shaft of the motor 3 is connected to the transmission shaft 51 through a transmission belt 8, so that when the motor 3 is working, the transmission shaft 51 is driven to rotate (it should be noted that the output shaft of the motor 3 can directly act on the transmission shaft 51 to drive the transmission shaft 51 to rotate); (4) four groups of diamond lifting assemblies 4 (i.e., the first group, the second group, the third group, and the fourth group of diamond lifting assemblies 4A, 4B, 4C, and 4D) are assembled. Components 4A, 4B, 4C, and 4D are respectively provided with four connecting rods 41, 42, 43, and 44, and are hinged by the four connecting rods 41, 42, 43, and 44, wherein the hinged ends perpendicular to the bottom surface of the housing 1 are fixed ends 410 and 430, and one of the fixed ends 410 is hingedly matched with the hinge seat 9 preset in the housing 1; in this embodiment, the first and third groups of diamond lifting components 4A, 4C and the second and fourth groups of diamond lifting components 4B and 4D are respectively arranged along both sides of the axis of the transmission shaft 51; wherein the first and second groups of diamond lifting components 4A, 4B are respectively connected to the two cam seats 52A and 52B on the transmission shaft 51 through the first connecting members 53A and 53B, and the two cam seats 52A and 52B are connected with the transmission shaft The third and fourth groups of diamond lifting assemblies 4C and 4D are connected to the two cam seats 52C and 52D on the transmission shaft 51 through the first connecting members 53C and 53D, respectively, and the two cam seats 52C and 52D move in opposite directions when the transmission shaft 51 rotates; (5) After the four groups of diamond lifting assemblies 4 are arranged, the transmission shaft 51 is connected to the diamond lifting assemblies 4A, 4B, 4C, and 4D through the connecting structure 5 and the auxiliary structure. Specifically, a plurality of cam seats 52A, 52B, 52C, and 52D are sleeved and fixed on the transmission shaft 51, wherein the convex parts of the cam seats 52 arranged on both sides of the axial direction of the transmission shaft 51 are in opposite directions (i.e., the convex parts acting on the first and second groups of diamond lifting assemblies 4A and 4B are in opposite directions). The cam seats 52A and 52B have convex parts in opposite directions), and then one end of the first connecting member 53A is sleeved on the cam seat 52A, and the other end of the first connecting member 53A is hinged to the free end 420 of the diamond lifting assembly 4; in this way, the first, second, third and fourth groups of diamond lifting assemblies 4A, 4B, 4C and 4D are respectively connected to the four cam seats 52A, 52B, 52C and 52D on the transmission shaft 51 through the four first connecting members 53A, 53B, 53C and 53D; (6) Install the auxiliary structure, in the same way, sleeve a plurality of auxiliary cams 7 on the transmission shaft 51, and connect the other free end 440 of the diamond lifting assembly 4 to the auxiliary cam 7 through the second connecting member 6 to form an eccentric fit;It should be noted that the cam seat 52 and the second auxiliary cam 7 corresponding to the first connecting member 53 and the second connecting member 6 hinged on the same group of diamond lifting structures have opposite deflection displacement directions. For example, the first and second connecting members 53A and 6A acting on the two free ends 420 and 440 of the first group of diamond lifting components 4, the cam seat 52 and the convex part of the auxiliary cam 7 corresponding to the first and second connecting members 52A and 6A extend in opposite directions; (7) After the four groups of diamond lifting components 4 are respectively connected and matched with the same transmission shaft 51, the receiving platform 2 (lifting surface 2) is fixed to the other fixed end 430 of the diamond lifting component 4 to complete the entire assembly process;

[0041] In actual use, the motor 3 is powered on and works, and its output shaft rotates, driving the transmission shaft 51 to rotate through the transmission belt 8 (belt); the transmission shaft 51 rotates, and the cam seat 52 and the auxiliary cam 7 thereon also rotate accordingly, and the convex parts of the cam seat 52 and the auxiliary cam 7 drive the first and second connecting members 53 and 6 to drive the two free ends 420 and 440 of the four groups of diamond-shaped lifting assemblies 4 to move during the rotation (for example: under the action of the cam seat 52, the first connecting member 53 drives one of the free ends 420 to move away from the transmission shaft 51, and synchronously, under the action of the auxiliary cam 7, the second connecting member 7 drives the other free end 440 toward the transmission shaft 51 Movement, thereby driving the upper fixed ends 430 of the four hinged connecting rods 41, 42, 43, and 44 to move downward; on the contrary, when the cam seat 52 rotates 180° with the transmission shaft 51, the first connecting member 53 and the second connecting member 6 respectively drive the two free ends 420 and 440 to move in opposite directions, and swing back and forth in an alternating manner to achieve the lifting and lowering of the receiving platform 2 on the upper fixed end 430; the rest of the second, third, and fourth groups of diamond lifting components 4B, 4C, and 4D are lifted and lowered in the same way; and the convex directions of the cam seats 52 and the auxiliary cams 7 of the diamond lifting components 4 arranged on both sides of the transmission shaft 51 need to be set in opposite directions to achieve synchronous lifting and lowering.

[0042] The lifting mechanism and the rhythm machine provided by the present invention have a simple structure, a reasonable design and are easy to implement. Based on the principle that the deformation of two groups of diagonal lines of a rhombus decomposes the displacement generated in the transmission process, at least two groups of rhombus lifting components are used to support the lifting surface to drive the lifting surface to move up and down smoothly. Specifically, when a rhombus lifting component is formed by hinged connection of four connecting rods and a driving member transmits force to the rhombus lifting component through a connecting structure, the lateral torsion is eliminated through the rhombus structure composed of four connecting rods, so as to ensure that the lifting surface only moves in the vertical direction without lateral displacement, and the lifting surface is lifted when in use. More importantly, after eliminating the lateral torque, the stability of the entire lifting structure is better, it is not easy to be damaged, and the service life is longer. It can be assembled with nylon parts to reduce costs. Not only that, this structure is simpler to manufacture and has lower costs, which improves the economic benefits of the enterprise. The transmission shaft, cam seat and first connecting member used in the present invention are used as the connection structure for transmitting power with the diamond-shaped lifting component. Its structure is simpler, and the force transmission of at least two diamond-shaped lifting components is realized through a transmission shaft. It is not easy to lose during the force transmission process. It only needs to easily drive any free end of the diamond-shaped lifting component to realize the lifting function. Compared with the existing lever mechanism and lever plus torsion mechanism, the connection structure of the present invention is more direct in force transmission and has better stability; the present invention uses four groups of diamond lifting components to ensure stability during the lifting process, and the four groups of diamond lifting components are arranged at four corners of the lifting surface, and the four groups of diamond lifting components are realized through a transmission shaft, so that the force transmission is more synchronous, and the lifting process is close to horizontal, and the consumer has a better experience when standing on the lifting surface and moving; the present invention also adds an auxiliary structure, and a second connecting member is also arranged on each group of diamond lifting components to ensure and improve the stability of the diamond lifting components. In the event of failure of the first connecting member, the second connecting member can also be driven. In addition, during the driving process of the first connecting member, the second connecting member can assist in support, and the lifting of the entire structure is more stable, less prone to deflection, and has better strength and stability performance; the present invention adopts that the connection structure and the connecting rod can be prepared and formed by nylon, which can not only ensure the strength and wear resistance of the entire lifting mechanism, but also reduce the overall weight of the rhythm machine and reduce the production cost compared with the existing metal parts; the rhythm machine described in the present invention has a simple structure, good stability, low cost, and greatly improved overall experience and service life, which is more popular with consumers.

[0043] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A lifting mechanism for a rotary machine, characterized in that: The lifting mechanism comprises a base, a lifting surface, a driving member, at least two sets of lifting components and a connecting structure; A base, which is used to carry the driving member, at least two sets of lifting components and a connecting structure; At least two groups of lifting assemblies, each group of lifting assemblies includes four connecting rods, and the four connecting rods are hinged to form a diamond-shaped lifting assembly, wherein two oppositely arranged fixed ends of the diamond-shaped lifting assembly are respectively hinged to the lifting surface and the base, and any one of the other two free ends or both free ends are connected to the driving member through a connecting structure to form a transmission; A driving member, which is mounted on the base and connected to the connecting structure, and drives the two groups of diamond-shaped lifting components to move synchronously through the connecting structure; The driving member drives the connecting structure to move, so as to link the free ends of the two groups of diamond-shaped lifting components connected thereto to change their positions synchronously, so that the lifting surface hinged on the fixed end moves up and down relative to the base; The connection structure comprises a transmission shaft, a cam seat and a first connection member, wherein the cam seat is fixedly mounted on the transmission shaft; one end of the first connection member is sleeved on the cam seat, and the other end is hinged to the free end of the diamond-shaped lifting assembly; wherein the driving member drives the transmission shaft to rotate, and links the cam seats arranged at both ends of the transmission shaft to rotate, thereby driving the first connection member sleeved on the cam seat to push the free end of the diamond-shaped lifting assembly to change position; The lifting mechanism comprises a first group, a second group, a third group and a fourth group of diamond lifting components, wherein the first group and the third group of diamond lifting components and the second group and the fourth group of diamond lifting components are respectively arranged along both sides of the axis of the transmission shaft; wherein the first group and the second group of diamond lifting components are respectively connected to two cam seats on the transmission shaft through a first connecting member, and the two cam seats have opposite yaw movement directions when the transmission shaft rotates; the third group and the fourth group of diamond lifting components are respectively connected to the two cam seats on the transmission shaft through a first connecting member, and the two cam seats have opposite yaw movement directions when the transmission shaft rotates; Wherein, the convex parts of the cam seats arranged on both sides of the transmission shaft in the axial direction are in opposite directions.

2. A lifting mechanism for a rotary machine as claimed in claim 1, characterized in that: It also includes an auxiliary structure, which includes a second connecting member and an auxiliary cam; the auxiliary cam is fixedly mounted on the transmission shaft; one end of the second connecting member is hinged to the other free end of the diamond-shaped lifting component, and the other end is sleeved on the auxiliary cam; wherein the first connecting member, the cam seat corresponding to the second connecting member, and the auxiliary cam, which are hinged on the same group of diamond-shaped lifting structures, have opposite swing displacement directions.

3. A lifting mechanism for a rotary machine as claimed in claim 1, characterized in that: The driving member is a motor.

4. A lifting mechanism for a rotary machine as claimed in claim 3, characterized in that: The motor drives the transmission shaft to rotate via a transmission belt.

5. A lifting mechanism for a rotary machine as claimed in claim 3, characterized in that: The connecting rod of the diamond-shaped lifting assembly is a connecting rod made of nylon.

6. A rotor, comprising a housing, a fixing seat and a receiving platform; characterized in that: It also includes the lifting mechanism as described in any one of claims 1 to 5; the shell is integrally formed with the lifting mechanism or is built into the shell; the fixed seat is used to hinge the fixed end of the lifting structure with the base; the receiving platform is connected to the lifting surface or is integrally formed.

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