Fitness resistance assembly and household fitness equipment

Abstract

The utility model discloses a fitness resistance assembly and household fitness equipment, and the fitness resistance assembly comprises a motor which is provided with a motor shell; the transmission gear mechanism is in transmission connection with the motor and is provided with a gear box body; the motor shell and the gear box body are provided with a shared shell, a transmission gear installation space is formed on the first side of the shared shell, and a motor installation space is formed on the second side, opposite to the first side, of the shared shell. According to the fitness resistance assembly, the power source of resistance is provided by the motor, the power source is transmitted to the load through the transmission gear mechanism, so that resistance is provided for fitness, the system takes the shared shell as a boundary, the motor mounting space and the gear mounting space are formed on the two sides respectively, and therefore the use of the shell on one side is reduced, and the cost is reduced. And the overall weight of the system is reduced while the overall connecting structure is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of fitness machinery, and in particular to a fitness resistance component and home fitness equipment using the same. Background Art

[0002] In the prior art, household strength fitness resistance devices usually use a counterweight block in conjunction with a counterweight mechanism to achieve strength fitness resistance control, use an inner rotor single motor to achieve digitally controlled strength fitness resistance control, use an outer rotor single motor to achieve digitally controlled strength fitness resistance, or use a reduction motor with a planetary gearbox structure to achieve digitally controlled strength fitness resistance.

[0003] In the above scheme, the scheme of the counterweight block combined with the counterweight machine has a large mass and volume due to the existence of the counterweight block, and is purely mechanically controlled, and cannot achieve stepless adjustment of speed and resistance;

[0004] The torque density of the inner rotor single motor and the outer rotor single motor is low, the volume is large, and the outer rotor single motor has a large moment of inertia, which leads to slow response speed and poor experience when used;

[0005] The reduction motor with a planetary gearbox structure also has the disadvantages of being large in size, complex in structure, and heavy in weight.

[0006] Since household strength resistance devices are used at home, they are often moved and the space is relatively limited, so the weight and size of household strength fitness resistance devices will limit their promotion and application. Utility Model Content

[0007] The purpose of the embodiments of the utility model is to provide a fitness resistance component, which can solve the above-mentioned problems existing in the prior art.

[0008] To achieve the above objectives, this application adopts the following technical solutions:

[0009] In one aspect, a fitness resistance assembly is provided, comprising:

[0010] A motor having a motor housing;

[0011] A transmission gear mechanism, which is transmission-connected to the motor and has a gear box;

[0012] The motor housing and the gear box body have a common housing, a first side of the common housing forms a transmission gear installation space, and a second side of the common housing opposite to the first side forms a motor installation space.

[0013] The system is divided by a common shell, with motor installation space and gear installation space formed on both sides respectively, thereby reducing the use of the shell on one side, simplifying the overall connection structure and reducing the overall weight of the system.

[0014] Optionally, the gear housing has a housing front shell, and the housing front shell is buckled on the first side of the common housing to form the transmission gear installation space;

[0015] The motor housing comprises a motor middle frame and a motor rear housing, and the motor rear housing and the motor middle frame are buckled on the second side of the common housing to form the motor installation space.

[0016] Optionally, the common shell has a first surface and a second surface that are opposite to each other, the front shell of the box body is buckled on the first surface, and the motor middle frame is buckled on the second surface.

[0017] Optionally, the first surface has a convex edge extending away from the motor middle frame, and a first connecting hole is provided on the convex edge. A second connecting hole is provided on the front shell of the box body corresponding to the first connecting hole. The front shell of the box body is fixedly connected to the common shell by bolts passing through the first connecting hole and the second connecting hole.

[0018] Optionally, the motor includes a motor shaft and an active transmission tooth which is an integral structure with the motor shaft, and the transmission gear mechanism includes a first transmission gear, and the active transmission tooth is meshed with the first transmission gear.

[0019] The active transmission gear is arranged as an integral structure with the motor shaft, which can also reduce the overall volume and weight of the fitness resistance assembly, reduce the assembly steps of the system, and reduce the processing accuracy requirements.

[0020] Optionally, the rotation axis of the first transmission gear is parallel to the motor shaft.

[0021] Optionally, an encoder magnetic ring is further included, and the encoder magnetic ring is installed on the motor shaft through interference fit.

[0022] The encoder magnetic ring is an important component of the encoder. Its main function is to generate a magnetic field and transfer it to the magnetic sensor.

[0023] Optionally, it also includes a motor power line and a temperature feedback line of the motor stator winding, the motor power line and the temperature feedback line are electrically connected to an adapter plate, and are led out to the outside of the motor housing after being transferred through the adapter plate.

[0024] Optionally, the adapter plate is perpendicular to the power output shaft of the motor and is arranged around the entire circumference of the power output shaft of the motor.

[0025] Combined with this structure, a suitable position can be selected to lead out the motor power line and the temperature feedback line. Reasonable selection of the lead-out position can simplify the product structure and achieve lightweighting of the motor's volume and weight.

[0026] Optionally, a motor control and feedback unit is further included, and the fitness resistance component is electrically connected to an external control unit via the motor control and feedback unit.

[0027] The motor control and feedback unit is an important component of the motor control system. It is responsible for collecting the motor operating status information and controlling the motor according to the control instructions.

[0028] Optionally, the transmission gear mechanism includes a torque output shaft, and the first transmission gear is fixedly connected to the torque output shaft.

[0029] The torque output shaft is used to connect a load. Optionally, in the present application, the load may be a winding wheel.

[0030] In another aspect, a home fitness device is provided, comprising the fitness resistance assembly as described above.

[0031] The beneficial effects of the present application are as follows: the fitness resistance assembly described in the present application is a power source for resistance provided by a motor, and the power source is transmitted to the load through a transmission gear mechanism, thereby providing resistance for fitness. The system is divided by a common shell, and a motor installation space and a gear installation space are formed on both sides, thereby reducing the use of a shell on one side, simplifying the overall connection structure and reducing the overall weight of the system.

[0032] The home fitness equipment using the fitness resistance component has the characteristics of light weight, small footprint, high torque density and stepless adjustment of speed and resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present application is further described in detail below based on the drawings and embodiments.

[0034] Figure 1 This is a schematic diagram of the overall structure of the fitness resistance assembly described in an embodiment of the present application;

[0035] Figure 2 for Figure 1 Middle AA section view;

[0036] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0037] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0038] Figure 5 This is a cross-sectional view of the motor housing and the gear box according to the embodiment of the present application;

[0039] Figure 6This is a cross-sectional view of the common shell described in the embodiment of the present application.

[0040] In the figure:

[0041] 100, motor; 110, motor shaft; 120, active transmission tooth; 200, transmission gear mechanism; 210, first transmission gear; 220, torque output shaft; 300, common housing; 310, first surface; 311, convex edge; 312, first connecting hole; 320, second surface; 330, front housing; 331, second connecting hole; 340, motor middle frame; 350, motor rear housing; 360, through hole; 400, transmission gear installation space; 500, motor installation space; 600, encoder magnetic ring; 700, adapter plate; 800, motor control and feedback unit. DETAILED DESCRIPTION

[0042] In order to make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0043] In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the prior art, household strength fitness resistance devices usually use a counterweight block in conjunction with a counterweight mechanism to achieve strength fitness resistance control, use an inner rotor single motor to achieve digitally controlled strength fitness resistance control, use an outer rotor single motor to achieve digitally controlled strength fitness resistance, or use a reduction motor with a planetary gearbox structure to achieve digitally controlled strength fitness resistance.

[0046] In the above scheme, the scheme of the counterweight block combined with the counterweight machine has a large mass and volume due to the existence of the counterweight block, and is purely mechanically controlled, and cannot achieve stepless adjustment of speed and resistance;

[0047] The torque density of the inner rotor single motor and the outer rotor single motor is low, the volume is large, and the outer rotor single motor has a large moment of inertia, which leads to slow response speed and poor experience when used;

[0048] The reduction motor with a planetary gearbox structure also has the disadvantages of being large in size, complex in structure, and heavy in weight.

[0049] Since household strength resistance devices are used at home, they are often moved and the space is relatively limited, so the weight and size of household strength fitness resistance devices will limit their promotion and application.

[0050] Fitness servo resistance motor is a servo motor used in fitness equipment. It uses electromagnetic resistance to generate resistance and has the following advantages: high resistance adjustment accuracy, the resistance size can be controlled by changing the excitation current of the motor to achieve stepless resistance adjustment. Low noise level, no mechanical transmission mechanism is required, so the noise level is low. Small size and light weight, no mechanical transmission mechanism is required, so the size and weight are small.

[0051] Since fitness users have different strength levels and require different resistance intensities, high resistance adjustment accuracy can well meet the usage requirements of different users. At the same time, the low noise level can make the working environment quiet and improve the user experience. The small size and light weight can reduce the floor space and facilitate transportation and relocation. Therefore, fitness servo resistance motors are currently widely used.

[0052] However, the existing fitness resistance assembly includes a fitness servo resistance motor and a transmission system. The fitness servo resistance motor and the transmission system each have a protective structure. The internal structure of the fitness servo resistance motor is unreasonable, resulting in a complex structure of the fitness resistance assembly, and the size and weight are still large. Based on this, the present application hopes to provide a fitness resistance assembly with a more reasonable structural layout and a smaller size.

[0053] like Figure 1-6As shown, the present application provides a fitness resistance assembly, comprising: a motor 100 for providing a power source of resistance, the motor 100 having a motor housing; a transmission gear mechanism 200 transmission-connected to the motor 100, the transmission gear mechanism 200 having a gear housing;

[0054] The motor housing and the gear housing have a common housing 300 , a first side of the common housing 300 forms a transmission gear installation space 400 , and a second side of the common housing 300 opposite to the first side forms a motor installation space 500 .

[0055] The fitness resistance assembly described in the present application is provided with a power source for resistance by a motor 100, and the power source is transmitted to the load through a transmission gear mechanism 200, thereby providing resistance for fitness. The system is divided by a common shell 300, and a motor installation space 500 and a gear installation space are formed on both sides, thereby reducing the use of a shell on one side, simplifying the overall connection structure and reducing the overall weight of the system.

[0056] Specifically, refer to Figure 5 As shown, the gear housing in the present application has a housing front shell 330, which is snapped onto the first side of the common housing 300 and forms the transmission gear installation space 400 together with the common housing 300; the transmission gear mechanism 200 is arranged in the transmission gear installation space 400.

[0057] The motor housing comprises a motor middle frame 340 and a motor rear housing 350 . The motor rear housing 350 and the motor middle frame 340 are buckled with the common housing 300 , and together with the common housing 300 , form the motor installation space 500 .

[0058] The common housing 300 is provided with a through hole 360 ​​to connect the transmission gear installation space 400 with the motor installation space 500 , thereby realizing transmission connection between the motor 100 and the transmission gear mechanism 200 .

[0059] Optionally, the motor 100 described in the embodiment of the present application is an inner rotor brushless motor, which is a brushless motor in which the rotor is located inside the stator. The rotor is made of permanent magnets and has multiple poles. The stator is made of windings and has multiple phases. The inner rotor brushless motor has the following advantages: Compact structure: The rotor of the inner rotor brushless motor is located inside the stator, so the structure is more compact and the volume is smaller. High efficiency: There is no contact between the rotor and the stator of the inner rotor brushless motor, so the friction loss is small and the efficiency is high. Low vibration: There is no contact between the rotor and the stator of the inner rotor brushless motor, so the vibration is small. The inner rotor brushless motor is an existing product, and its specific structure is not described in detail in this application. Those skilled in the art can select a suitable motor product or make appropriate improvements based on the technical concept of this application to make it conform to the application scenario of this application.

[0060] For example, refer to Figure 5 As shown, the common housing 300 has a first surface 310 and a second surface 320 that are opposite to each other, the box front shell 330 is buckled on the first surface 310 , and the motor middle frame 340 is buckled on the second surface 320 .

[0061] The first side and the second side of the common housing in this solution can respectively refer to Figure 2 As shown in the left and right sides of the common shell, the first surface 310 refers to the left side surface of the common shell, and the second surface 320 refers to the right side surface of the common shell.

[0062] Among them, the first and the second are only used to distinguish in description and have no special meaning.

[0063] Specifically, refer to Figure 6 As shown, the first surface 310 has a flange 311 extending in a direction away from the motor middle frame 340, and a first connecting hole 312 is provided on the flange 311. The front shell 330 of the box body is provided with a second connecting hole 331 corresponding to the first connecting hole 312. The front shell 330 of the box body is fixedly connected to the common shell 300 by bolts passing through the first connecting hole 312 and the second connecting hole 331.

[0064] In the present application, since the transmission gear mechanism 200 itself is relatively narrow, dividing its shell part into only a common shell 300 and a front shell 330 of the box body can reduce the difficulty of assembly and save the number of shell parts and connectors, thereby further reducing the volume of the system and reducing the weight of the system.

[0065] Reference Figure 3As shown, as an optional technical solution of the present application, the motor 100 in the embodiment of the present application includes a motor shaft 110, and an active transmission tooth 120 that is an integral structure with the motor shaft 110, and the transmission gear mechanism 200 has a first transmission gear 210, and the active transmission tooth 120 is meshed with the first transmission gear 210.

[0066] Compared with the solution of setting the motor shaft 110 as a smooth axis and installing a gear structure thereon to mesh with the first transmission gear 210, setting the active transmission gear 120 as an integral structure with the motor shaft 110 can also reduce the overall volume and weight of the fitness resistance assembly, reduce the assembly steps of the system, and reduce the processing accuracy requirements.

[0067] Preferably, in the embodiment of the present application, the rotation axis of the first transmission gear 210 is parallel to the motor shaft 110 .

[0068] It is understandable that the fact that the rotation axis of the first transmission gear 210 is parallel to the motor shaft 110 is not a limitation of the present application. In other embodiments, according to actual product requirements, the rotation axis of the first transmission gear 210 and the motor shaft 110 can also be set to be perpendicular to each other, or to be at any desired angle.

[0069] Reference Figure 3 As shown, the active transmission teeth 120 provided on the motor and the first transmission gear 210 provided on the transmission gear mechanism 200 in the embodiment of the present application are both spur gears. However, the above-mentioned scheme of using spur gear transmission is not a limitation of the present application. In other embodiments, the active transmission teeth 120 and the first transmission gear 210 can also be set as helical gears. The tooth profile of spur gear transmission is a straight line. Therefore, during the meshing process, there is relative sliding between the teeth, resulting in greater gear wear and higher noise. In order to reduce wear and noise, spur gear transmission usually requires a larger pitch and a smaller number of teeth, so it occupies a larger space.

[0070] The tooth profile of the helical gear transmission is an oblique line, so during the meshing process, there is relative rolling between the teeth, which can effectively reduce wear and noise. The helical gear transmission can use a smaller pitch and a larger number of teeth, so it takes up less space. Generally speaking, the use of helical gear transmission can reduce the space occupied by the transmission mechanism to 2 / 3 of that of the spur gear transmission, and has low noise, which can improve the user experience.

[0071] Further, see Figure 4 As shown, the embodiment of the present application further includes an encoder magnetic ring 600 , and the encoder magnetic ring 600 is installed on the motor shaft 110 by interference fit.

[0072] The encoder magnetic ring is an important component of the encoder. Its main function is to generate a magnetic field and transmit it to the magnetic sensor. The material of the encoder magnetic ring 600 is usually ferrite, neodymium iron boron, samarium cobalt, etc. The encoder magnetic ring 600 can convert the speed of the motor into an electrical signal, which is then processed by the encoder's decoding circuit to finally obtain the speed and position of the motor. The speed or position information of the motor can be fed back to the control system, and the control system controls the motor according to the feedback information to achieve precise motion control.

[0073] Specifically, the fitness resistance assembly described in the present application also includes a motor power line and a temperature feedback line of the motor stator winding. The motor power line and the temperature feedback line are electrically connected to the adapter plate 700 and are led out to the outside of the motor housing after being transferred through the adapter plate 700.

[0074] The power line is a three-phase line of the motor, which refers to the three power lines of the three-phase motor. A three-phase motor means that when the three-phase stator winding of the motor (each phase differs by 120 degrees in electrical angle) is supplied with three-phase alternating current, a rotating magnetic field will be generated, which cuts the rotor winding, thereby generating an induced current in the rotor winding (the rotor winding is a closed path), and the current-carrying rotor conductor will generate an electromagnetic force under the action of the stator rotating magnetic field, thereby forming an electromagnetic torque on the motor shaft 110, driving the motor to rotate, and the direction of motor rotation is the same as the direction of the rotating magnetic field.

[0075] Preferably, the adapter plate 700 is perpendicular to the power output shaft of the motor 100 , that is, perpendicular to the motor shaft 110 , and is arranged around the entire circumference of the power output shaft of the motor 100 .

[0076] By providing the adapter plates 700 arranged around the entire circumference, the motor power line and the temperature feedback line can be led out at any position of the motor housing of the motor 100 after being electrically connected thereto. That is, in combination with this structure, a suitable position can be selected to lead out the motor power line and the temperature feedback line. Reasonable selection of the lead-out position can simplify the product structure and achieve lightweighting of the motor's volume and weight.

[0077] Preferably, the present application further includes a motor control and feedback unit 800 , and the fitness resistance component is electrically connected to an external control unit via the motor control and feedback unit 800 .

[0078] The motor control and feedback unit 800 is an important component of the motor control system. It is responsible for collecting the motor operation status information and controlling the motor according to the control instructions.

[0079] The motor control and feedback unit 800 generally consists of the following parts:

[0080] Sensor: used to collect motor operating status information, such as speed, position, current, voltage, etc.

[0081] Controller: Controls the motor according to the control instructions and information collected by the sensor.

[0082] Actuator: Converts the control signal of the controller into a control signal that can be used by the motor, such as voltage, current, etc.

[0083] The functions of the motor control and feedback unit 800 are mainly as follows:

[0084] Position control: According to the control instructions, the motor rotor is controlled to reach the specified position.

[0085] Speed ​​control: According to the control instructions, the motor speed is controlled to maintain the specified value.

[0086] Torque control: According to the control instructions, the motor output torque is controlled to remain at the specified value.

[0087] Protection function: protect the motor from overload, overheating and other faults.

[0088] There are many types of motor control and feedback units. Different motor control and feedback units can be selected according to factors such as motor type and control requirements.

[0089] In the embodiment of the present application, the motor control unit is used to control the servo motor, and is usually composed of a position loop, a speed loop, a torque loop, etc.

[0090] Specifically, the transmission gear mechanism 200 includes a torque output shaft 220, and the first transmission gear 210 is fixedly connected to the torque output shaft 220. The torque output shaft 220 is used to connect a load, and optionally, the load in the present application may be a winding wheel.

[0091] At the same time, the present application also provides a home fitness equipment, which has the fitness resistance assembly as described above. The home fitness equipment using the fitness resistance assembly has the characteristics of light weight, small footprint, high torque density, and stepless adjustable speed and resistance.

[0092] It can be understood that torque density is a measure of the torque transmission capacity of a mechanical component. It is the ratio of torque capacity to volume, expressed in units of torque per volume. Torque density is a property of the system because it depends on the design of each element of the component being examined and their connection relationship.

[0093] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right", etc., and other directions or positional relationships are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of this application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0094] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0095] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0096] The technical principles of the present application are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present application and cannot be interpreted as limiting the scope of protection of the present application in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the present application without creative work, and these methods will fall within the scope of protection of the present application.

Claims

1. A fitness resistance assembly, characterized in that: include: A motor (100) having a motor housing; A transmission gear mechanism (200) is transmission-connected to the motor (100) and comprises a gear housing; The motor housing and the gear housing have a common housing (300), a first side of the common housing (300) forms a transmission gear installation space (400), and a second side of the common housing (300) opposite to the first side forms a motor installation space (500).

2. The fitness resistance assembly according to claim 1, characterized in that: The gear housing has a housing front shell (330), and the housing front shell (330) is buckled on the first side of the common housing (300) to form the transmission gear installation space (400); The motor housing comprises a motor middle frame (340) and a motor rear housing (350), and the motor rear housing (350) and the motor middle frame (340) are buckled on the second side of the common housing (300) to form the motor installation space (500).

3. The fitness resistance assembly according to claim 2, characterized in that: The common shell (300) has a first surface (310) and a second surface (320) that are separated from each other, the box front shell (330) is buckled on the first surface (310), and the motor middle frame (340) is buckled on the second surface (320).

4. The fitness resistance assembly according to claim 3, characterized in that: The first surface (310) has a convex edge (311) extending in a direction away from the motor middle frame (340), and a first connecting hole (312) is provided on the convex edge (311); the front shell (330) of the box body is provided with a second connecting hole (331) corresponding to the first connecting hole (312); the front shell (330) of the box body is fixedly connected to the common shell (300) by bolts passing through the first connecting hole (312) and the second connecting hole (331).

5. The fitness resistance assembly according to any one of claims 1 to 4, characterized in that: The motor (100) comprises a motor shaft (110) and an active transmission tooth (120) which is an integral structure with the motor shaft (110); the transmission gear mechanism (200) comprises a first transmission gear (210); and the active transmission tooth (120) is meshed with the first transmission gear (210).

6. The fitness resistance assembly according to claim 5, characterized in that: The rotation axis of the first transmission gear (210) is parallel to the motor rotation axis (110).

7. The fitness resistance assembly according to claim 1, characterized in that: It also includes a motor power line and a temperature feedback line of the motor stator winding. The motor power line and the temperature feedback line are electrically connected to an adapter plate (700) and are connected through the adapter plate (700) and then led out to the outside of the motor housing.

8. The fitness resistance assembly according to claim 7, characterized in that: The adapter plate (700) is perpendicular to the power output shaft of the motor (100) and is arranged around the entire circumference of the power output shaft of the motor (100).

9. The fitness resistance assembly according to claim 5, characterized in that: The transmission gear mechanism (200) comprises a torque output shaft (220), and the first transmission gear (210) is fixedly connected to the torque output shaft (220).

10. A home fitness equipment, characterized in that: A fitness resistance assembly according to any one of claims 1 to 9.

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