Elastic driving mechanism, underframe device and massage furniture

Abstract

The utility model relates to the technical field of furniture, and provides an elastic driving mechanism, an underframe device and massage furniture, the elastic driving mechanism comprises a connecting seat, a driving motor, an eccentric shaft and an elastic transmission arm, the elastic transmission arm is arranged between the eccentric shaft and the connecting seat, and one end of the elastic transmission arm is connected with the connecting seat; wherein the eccentric shaft is provided with a first transmission section and a second transmission section, the rotating center line of the first transmission section and the rotating center line of the second transmission section are arranged in an offset mode, the first transmission section is in transmission connection with the output end of the driving motor, and the second transmission section is in transmission connection with the other end of the elastic transmission arm. Through the arranged elastic transmission arm, the elastic transmission arm has elastic deformation in the first direction so as to buffer the acting force transmitted to the connecting base by the eccentric shaft, swing of the amplitude can be absorbed and buffered, and transmission of the driving mechanism is stable and reliable; meanwhile, during assembly, the number of parts of a transmission part can be reduced, assembly is convenient and fast, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to an elastic driving mechanism, a bottom frame device and massage furniture. Background Art

[0002] On the market, some massage furniture such as massage chairs and massage sofas usually include a massage body that supports the user and a base frame device arranged at the bottom of the massage body. The reciprocating movement is achieved through a driving mechanism on the base frame device to drive the massage body to reciprocate, thereby achieving a rhythmic massage effect.

[0003] However, the transmission part of the driving mechanism in the related art has a complex structure, poor stability, and a large amplitude of swing, which correspondingly causes the massage body to be bumpy, that is, it does not conform to the feeling of rhythmic massage, the transmission is relatively unstable, and the production cost is high. Utility Model Content

[0004] The utility model provides an elastic drive mechanism, which is used to solve the problems in the related art that the transmission part of the drive mechanism has a complex structure, poor stability, large swing and high production cost.

[0005] The utility model provides an elastic driving mechanism, comprising:

[0006] Connecting seat;

[0007] Drive motor;

[0008] an eccentric shaft, wherein the eccentric shaft is configured to rotate;

[0009] An elastic transmission arm, wherein the elastic transmission arm is disposed between the eccentric shaft and the connecting seat, one end of the elastic transmission arm is connected to the connecting seat, and the elastic transmission arm has elastic deformation in a first direction to buffer the force transmitted from the eccentric shaft to the connecting seat;

[0010] Wherein, the eccentric shaft has a first transmission section and a second transmission section, the rotation center lines of the first transmission section and the second transmission section are offset, the first transmission section is transmission connected to the output end of the drive motor, and the second transmission section is transmission connected to the other end of the elastic transmission arm.

[0011] According to an elastic drive mechanism provided by the utility model, the elastic transmission arm includes a connecting section and a deformation section connected to the connecting section, the connecting section is sleeved on the second transmission section, and the deformation section is connected to the connecting seat;

[0012] Wherein, the deformation section is arranged transversely.

[0013] According to an elastic drive mechanism provided by the utility model, the spacing between the two opposite side walls of the deformation section in the first direction includes a first equal spacing portion, a second equal spacing portion, and a gradually changing spacing portion located between the first equal spacing portion and the second equal spacing portion;

[0014] Wherein, the gradually varying spacing portion is a spacing between two opposite side walls of the deformation section in the first direction that gradually increases from one end close to the eccentric shaft to the other end close to the connecting seat.

[0015] According to an elastic driving mechanism provided by the utility model, the deformation section is a trapezoidal structure.

[0016] According to an elastic driving mechanism provided by the utility model, the elastic transmission arm and the connecting seat are detachably connected.

[0017] According to an elastic drive mechanism provided by the utility model, the connecting seat includes a vertical beam, a horizontal beam and a fixing plate, the vertical beam is connected to the horizontal beam, the vertical beam is arranged through the horizontal beam, the fixing plate is located on one side of the horizontal beam, and one end of the elastic transmission arm is sandwiched between the fixing plate and the horizontal beam;

[0018] Wherein, the elastic transmission arm, the crossbeam and the fixing plate are fixedly connected via a fastening assembly.

[0019] The utility model also provides a chassis device, comprising:

[0020] The elastic drive mechanism described above;

[0021] A first frame, the driving motor is disposed on the first frame, and the eccentric shaft is rotatably disposed on the first frame;

[0022] a second frame, the second frame reciprocatingly moves in a first direction relative to the first frame, the connecting seat being connected to the second frame;

[0023] An elastic guide assembly, used to connect the first frame and the second frame, the elastic guide assembly moves with the second frame and can be elastically deformed, and the elastic guide assembly can limit the moving direction of the second frame;

[0024] Wherein, the elastic guide assembly is arranged vertically in a second direction, and the second direction is perpendicular to the first direction.

[0025] According to a base frame device provided by the utility model, the elastic guide assembly includes a plurality of elastic plate structures, and the elastic plate structures are provided on opposite sides of the first frame body and the second frame body in the first direction.

[0026] According to a base frame device provided by the utility model, the second frame is located above the first frame, the projection area of ​​the second frame is larger than the projection area of ​​the first frame, the lower end of the second frame extends to the lower end position of the first frame, the upper end of the elastic plate structure is connected to the upper end of the first frame, and the lower end of the elastic plate structure is connected to the lower end of the second frame.

[0027] The utility model also provides a massage furniture, comprising the above-mentioned base frame device.

[0028] The elastic drive mechanism provided by the utility model has an eccentric shaft that rotates when the drive motor is running, and an elastic transmission arm is provided. The elastic transmission arm has elastic deformation in a first direction to buffer the force of the eccentric shaft being transmitted to the connecting seat, that is, the elastic transmission arm adapts to the swing of the eccentric shaft being transmitted to the connecting seat through its deformation, and can absorb and buffer the swing of the amplitude, so that the transmission of the drive mechanism is relatively stable and reliable; at the same time, during assembly, it is only necessary to connect one end of the elastic transmission arm to the eccentric shaft and the other end to the connecting seat, and there is no need to provide other transmission components between the eccentric shaft and the connecting seat, which is beneficial to reducing the number of components of the transmission part, making assembly more convenient and having lower production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic diagram of the structure of the chassis device provided by the utility model from a first perspective;

[0031] Figure 2 This is a second perspective structural schematic diagram of the chassis device provided by the utility model;

[0032] Figure 3 yes Figure 2 A magnified schematic diagram of the structure at center A;

[0033] Figure 4 It is a third perspective structural schematic diagram of the chassis device provided by the utility model.

[0034] Reference numerals:

[0035] 100, connecting seat; 110, vertical beam; 120, horizontal beam; 130, fixing plate;

[0036] 200, driving motor; 300, eccentric shaft; 310, first transmission section; 320, second transmission section; 400, elastic transmission arm; 410, connecting section; 420, deformation section; 500, first frame; 600, second frame; 700, elastic guide assembly; 710, elastic plate structure. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Combine the following Figure 1-Figure 4 The elastic drive mechanism, the base frame device and the massage furniture of the utility model are described. The massage furniture includes a massage body for carrying the user and a base frame device arranged at the bottom of the massage body. The drive mechanism is arranged at the base frame device. It should be noted that in some embodiments of the utility model, the massage furniture is a massage chair, and the base frame device is located at the bottom of the massage chair; of course, in some embodiments, the base frame device can be applied to furniture such as massage sofas and massage beds.

[0039] Reference Figures 1 to 4 According to the utility model, an elastic drive mechanism is provided, including a connecting seat 100, a driving motor 200, an eccentric shaft 300 and an elastic transmission arm 400, the eccentric shaft 300 is configured to be rotatable, the elastic transmission arm 400 is arranged between the eccentric shaft 300 and the connecting seat 100, one end of the elastic transmission arm 400 is connected to the connecting seat 100, the elastic transmission arm 400 has elastic deformation in a first direction to buffer the force of the eccentric shaft 300 transmitted to the connecting seat 100, wherein the eccentric shaft 300 has a first transmission section 310 and a second transmission section 320, the rotation center lines of the first transmission section 310 and the second transmission section 320 are arranged offset, the first transmission section 310 is transmission-connected to the output end of the driving motor 200, and the second transmission section 320 is transmission-connected to the other end of the elastic transmission arm 400.

[0040] The elastic drive mechanism provided by the utility model drives the eccentric shaft 300 to rotate when the motor 200 is running. The elastic transmission arm 400 is provided. The elastic transmission arm 400 has elastic deformation in the first direction to buffer the force of the eccentric shaft 300 being transmitted to the connecting seat 100, that is, the elastic transmission arm 400 adapts to the swing of the eccentric shaft 300 being transmitted to the connecting seat 100 through its deformation, and can absorb and buffer the swing of amplitude, so that the transmission of the drive mechanism is relatively stable and reliable; at the same time, during assembly, it is only necessary to connect one end of the elastic transmission arm 400 to the eccentric shaft 300 and the other end to the connecting seat 100. There is no need to provide other transmission components between the eccentric shaft 300 and the connecting seat 100, which is beneficial to reducing the number of components of the transmission part, making assembly more convenient and having lower production costs.

[0041] It should be noted that, refer to Figure 1 , Figure 2 and Figure 4 In the embodiment of the utility model, the first direction is the front-to-back direction, and the second direction is the up-down direction; of course, in some embodiments, the first direction and the second direction can be interchangeable, which is not limited here.

[0042] Specifically, refer to Figure 1 , Figure 2 and Figure 4 In an embodiment of the utility model, the above-mentioned drive motor 200 is connected to the first transmission section 310 of the eccentric shaft 300 through a pulley transmission assembly; of course, in some embodiments, the drive motor 200 can also be connected to the first transmission section 310 of the eccentric shaft 300 through a gear transmission assembly, which is not limited here.

[0043] It is understandable that, referring to Figures 1 to 4 In the embodiment of the utility model, the elastic transmission arm 400 includes a connecting section 410 and a deformation section 420 connected to the connecting section 410, the connecting section 410 is covered on the second transmission section 320, and the deformation section 420 is connected to the connecting seat 100; wherein, the deformation section 420 is arranged horizontally. With the above structure, the connecting section 410 is covered on the second transmission section 320, which helps to improve the rigidity and stability of the elastic transmission arm 400, and the deformation section 420 is connected to the connecting seat 100. The fixing of the connecting seat 100 can ensure that the elastic transmission arm 400 maintains a stable position and movement trajectory during the working process, thereby effectively transmitting force or movement; the combination of the connecting section 410 and the deformation section 420 can provide a certain degree of elasticity, so that the elastic transmission arm 400 can absorb vibration and reduce impact force during the movement process, and realize the function of transmitting force or movement; the horizontal arrangement of the deformation section 420 is conducive to increasing the stability and bearing capacity of the elastic transmission arm 400 in the first direction, and can better adapt to specific working environments and load requirements.

[0044] Specifically, refer to Figures 1 to 3 In the embodiment of the utility model, the spacing of the two opposite side walls of the deformation section 420 in the first direction includes a first equally spaced portion, a second equally spaced portion, and a gradually spaced portion located between the first equally spaced portion and the second equally spaced portion; wherein the gradually spaced portion is the spacing of the two opposite side walls of the deformation section 420 in the first direction which gradually increases from one end close to the eccentric shaft 300 to the other end close to the connecting seat 100. Through the above-mentioned setting, the design of the gradually spaced spacing can realize the gradual transfer and distribution of stress during the operation of the deformation section 420, which helps to alleviate the situation of local stress concentration and improve the service life and reliability of the deformation section 420. It can be understood that the gradually increasing spacing of the deformation section 420 in the first direction helps to adapt to the swing of the eccentric shaft 300 to the connecting seat 100, and the spacing of the deformation section 420 gradually increases with the change of position, so that the motion characteristics of the elastic transmission arm 400 during the operation, such as the bending angle, deformation degree, etc., can better adapt to the swing of the eccentric shaft 300 to the connecting seat 100, thereby improving the adaptability of the transmission system.

[0045] Specifically, in this embodiment, the deformation segment 420 is a trapezoidal structure. The trapezoidal structure is matched with the gradually varying spacing portion, which can better adapt to the stress conditions at different positions, so that the deformation segment 420 can smoothly transmit force or achieve the desired deformation effect during movement. The structure is simple and easy to manufacture.

[0046] Specifically, refer to Figure 1 , Figure 2 and Figure 4 In the embodiment of the utility model, the elastic transmission arm 400 and the connecting seat 100 are detachably connected to facilitate disassembly, assembly and maintenance.

[0047] Specifically, refer to Figure 1 , Figure 2 and Figure 4In this embodiment, the connection seat 100 includes a vertical beam 110, a horizontal beam 120 and a fixed plate 130, the vertical beam 110 is connected to the horizontal beam 120, the vertical beam 110 is arranged in the horizontal beam 120, the fixed plate 130 is located on one side of the horizontal beam 120, and one end of the elastic transmission arm 400 is sandwiched between the fixed plate 130 and the horizontal beam 120; wherein, the elastic transmission arm 400, the horizontal beam 120 and the fixed plate 130 are fixedly connected by a fastening assembly. With the above structure, through the structural arrangement of the vertical beam 110, the horizontal beam 120 and the fixed plate 130, the design structure of the connection seat 100 is relatively simple and clear, easy to manufacture and install, and has good operability and reliability; the elastic transmission arm 400 is sandwiched between the fixed plate 130 and the horizontal beam 120, which can effectively transmit force, and provide a certain elastic compensation when necessary, to adapt to movement or deformation within a certain range; in addition, the fastening assembly is used for fixed connection, which can be convenient for disassembly and maintenance, improves the maintainability, and is conducive to daily maintenance and overhaul work.

[0048] It should be noted that, in this embodiment, the above-mentioned fastening components include fastening bolts and fastening nuts. The fastening bolts penetrate the fixing plate 130, the elastic transmission arm 400 and the crossbeam 120 and are fixedly screwed with the fastening nuts. The assembly cost is low and the maintenance is convenient.

[0049] It is understandable that, referring to Figure 1 , Figure 2 and Figure 4 In an embodiment of the utility model, the base frame device also includes a first frame 500, a second frame 600 and an elastic guide assembly 700, the driving motor 200 is arranged on the first frame 500, the eccentric shaft 300 is rotatably arranged on the first frame 500, the second frame 600 reciprocates in a first direction relative to the first frame 500, the connecting seat 100 is connected to the second frame 600, the elastic guide assembly 700 is used to connect the first frame 500 and the second frame 600, the elastic guide assembly 700 moves with the second frame 600 and can be elastically deformed, and the elastic guide assembly 700 can limit the moving direction of the second frame 600; wherein, the elastic guide assembly 700 is vertically arranged in the second direction, and the second direction is perpendicular to the first direction.

[0050] Through the above structure, when the driving mechanism drives the second frame 600 to move relative to the first frame 500, the elastic guide component 700 can elastically deform following the moving direction of the second frame 600, and the moving direction of the second frame 600 is limited by the structure of the elastic guide component 700 itself, which is conducive to avoiding the second frame 600 from deviating from the moving direction, that is, preventing the second frame 600 from deviating from the moving direction and shaking, thereby improving the stability of the rhythmic furniture during rhythm and improving the comfort of the user.

[0051] It can be understood that, in the embodiment of the present utility model, the second frame body 600 is provided with an insertion through hole, and the vertical beam 110 is plug-connected with the insertion through hole.

[0052] Specifically, refer to Figure 1 , Figure 2 and Figure 4 In this embodiment, the elastic guide assembly 700 includes a plurality of elastic plate structures 710. The first frame 500 and the second frame 600 are both provided with elastic plate structures 710 on opposite sides in the first direction, thereby improving the stability of relative movement between the second frame 600 and the first frame 500.

[0053] Specifically, refer to Figure 1 , Figure 2 and Figure 4 In this embodiment, the second frame 600 is located above the first frame 500, the projection area of ​​the second frame 600 is larger than the projection area of ​​the first frame 500, the lower end of the second frame 600 extends to the lower end of the first frame 500, the upper end of the elastic plate structure 710 is connected to the upper end of the first frame 500, and the lower end of the elastic plate structure 710 is connected to the lower end of the second frame 600.

[0054] With the above structure, the second frame 600 is located above the first frame 500, and the lower end extends to the lower end of the first frame 500, thereby increasing the stability and load-bearing capacity of the overall structure. The elastic plate structure 710 connects the first frame 500 and the second frame 600, with the upper end connected to the upper end of the first frame 500 and the lower end connected to the lower end of the second frame 600, which can provide certain elastic support and compensation to adapt to deformation or movement requirements under different working conditions. The overall design takes into account the connection method between the first frame 500 and the second frame 600, so that the structural connection between the two is more coordinated, which is beneficial to the stability of the overall structure and work efficiency.

[0055] It should be noted that the number of the above-mentioned elastic plate structures 710 is not limited herein. In some embodiments, the above-mentioned elastic plate structures 710 may also be one group, two groups, three groups or more. For example, one group of elastic plate structures 710 is respectively provided on the relative front and rear sides of the first frame 500 and the second frame 600; one group of elastic plate structures 710 is provided on the relative front sides of the first frame 500 and the second frame 600, and two groups of elastic plate structures 710 are provided on the rear sides; or three groups of elastic plate structures 710 are respectively provided on the relative front and rear sides of the first frame 500 and the second frame 600; or, in some cases, when the elastic plate structure 710 is a group, one group of elastic plate structures 710 is provided on the relative front or rear sides of the first frame 500 and the second frame 600, which is not limited herein.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An elastic drive mechanism, It is characterized in that include: Connecting seat (100); A driving motor (200); An eccentric shaft (300), wherein the eccentric shaft (300) is configured to be rotatable; an elastic transmission arm (400), the elastic transmission arm (400) being arranged between the eccentric shaft (300) and the connecting seat (100), one end of the elastic transmission arm (400) being connected to the connecting seat (100), and the elastic transmission arm (400) having elastic deformation in a first direction to buffer the force of the eccentric shaft (300) being transmitted to the connecting seat (100); The eccentric shaft (300) comprises a first transmission section (310) and a second transmission section (320), the rotation center lines of the first transmission section (310) and the second transmission section (320) are arranged offset, the first transmission section (310) is transmission-connected to the output end of the drive motor (200), and the second transmission section (320) is transmission-connected to the other end of the elastic transmission arm (400); The elastic transmission arm (400) comprises a connecting section (410) and a deformation section (420) connected to the connecting section (410), the connecting section (410) is sheathed on the second transmission section (320), and the deformation section (420) is connected to the connecting seat (100); Wherein, the deformation section (420) is arranged in a transverse direction; The spacing between the two opposite side walls of the deformation section (420) in the first direction comprises a first equal spacing portion, a second equal spacing portion, and a gradually changing spacing portion located between the first equal spacing portion and the second equal spacing portion; The gradually varying spacing portion is a portion where the spacing between the two opposite side walls of the deformation section (420) in the first direction gradually increases from one end close to the eccentric shaft (300) to the other end close to the connecting seat (100).

2. The elastic drive mechanism according to claim 1, It is characterized in that The deformation section (420) is a trapezoidal structure.

3. The elastic drive mechanism according to claim 1, It is characterized in that The elastic transmission arm (400) is detachably connected to the connecting seat (100).

4. The elastic drive mechanism according to claim 3, It is characterized in that The connecting seat (100) comprises a vertical beam (110), a horizontal beam (120) and a fixing plate (130); the vertical beam (110) is connected to the horizontal beam (120); the vertical beam (110) passes through the horizontal beam (120); the fixing plate (130) is located on one side of the horizontal beam (120); and one end of the elastic transmission arm (400) is sandwiched between the fixing plate (130) and the horizontal beam (120); The elastic transmission arm (400), the crossbeam (120) and the fixing plate (130) are fixedly connected via a fastening assembly.

5. A chassis device, It is characterized in that include: The elastic drive mechanism according to any one of claims 1 to 4; A first frame (500), the driving motor (200) is disposed on the first frame (500), and the eccentric shaft (300) is rotatably disposed on the first frame (500); A second frame (600), the second frame (600) reciprocates in a first direction relative to the first frame (500), and the connecting seat (100) is connected to the second frame (600); An elastic guide component (700) is used to connect the first frame (500) and the second frame (600), the elastic guide component (700) moves with the second frame (600) and can be elastically deformed, and the elastic guide component (700) can limit the moving direction of the second frame (600); Wherein, the elastic guide assembly (700) is arranged vertically in a second direction, and the second direction is perpendicular to the first direction.

6. The chassis device according to claim 5, It is characterized in that The elastic guide assembly (700) comprises a plurality of elastic plate structures (710), and the elastic plate structures (710) are provided on opposite sides of the first frame (500) and the second frame (600) in a first direction.

7. The chassis device according to claim 6, It is characterized in that The second frame (600) is located above the first frame (500), the projection area of ​​the second frame (600) is larger than the projection area of ​​the first frame (500), the lower end of the second frame (600) extends to the lower end of the first frame (500), the upper end of the elastic plate structure (710) is connected to the upper end of the first frame (500), and the lower end of the elastic plate structure (710) is connected to the lower end of the second frame (600).

8. A massage furniture, It is characterized in that Comprising the chassis device according to any one of claims 5 to 6.

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