Massager and stroke adjusting structure of massage head

Abstract

The utility model provides a massager and massage head stroke adjusting structure, the massage head stroke adjusting structure includes control unit, motor, eccentric wheel, transmission piece and piston rod, control unit is electrically connected with motor, motor output shaft is connected with eccentric wheel to drive eccentric wheel swing, transmission piece is connected between eccentric wheel and piston rod, and the piston rod is connected with the eccentric wheel. The two ends of the transmission part are rotationally connected with the piston rod relative to the eccentric wheel. The axis of the joint of the transmission part and the eccentric wheel and the axis of an output rotating shaft of the motor are not on the same axis. The control unit sends a control instruction to the motor to enable the motor to drive the eccentric wheel to swing, the transmission piece converts swing of the eccentric wheel into linear reciprocating motion of the piston rod in the axial direction, and the piston rod is connected with the massage head to enable the massage head to do linear reciprocating motion. The stroke range of the piston rod is adjusted through electronic control, and then the purpose of adjusting the stroke range of the massage head is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of massage equipment, and in particular to a massage device and a stroke adjustment structure of a massage head. Background Art

[0002] Massagers are a new generation of health care equipment developed based on physics, bionics, bioelectricity, traditional Chinese medicine and many years of clinical practice. For example, fascia guns are soft tissue massage tools that relax the body's soft tissues through high-frequency impacts. Existing massagers drive the massage head to make reciprocating linear reciprocating motions through a massage drive mechanism. The massage head contacts the human body and generates high-frequency vibrations that act on the deep muscles, which reduces local tissue tension, relieves pain, and promotes blood circulation.

[0003] At present, the driving mechanism of the massage head is mainly composed of a motor, an eccentric wheel arranged on the output end of the motor, a transmission arm hinged to the eccentric shaft of the eccentric wheel at one end, and a piston rod hinged to the other end of the transmission arm at the tail. During the operation of the massager, the motor drives the eccentric wheel, the transmission arm, the piston rod and the massage head to form a striking massage mode, and its amplitude, that is, the striking distance, is determined by the eccentricity of the eccentric shaft on the eccentric wheel. However, the existing massage head driving mechanism is a fixed eccentric shaft, and the eccentricity cannot be adjusted. For example, the massage driving mechanism with a striking distance of 8mm has the same striking distance in both forward and reverse rotation. When the striking distance is large, the position with less muscle will feel pain, and when the striking distance is small, the position with more muscle will not have much massage effect. Therefore, it is far from meeting the needs of customers for different amplitudes of the massager when massaging different positions. Utility Model Content

[0004] The utility model aims at the shortcomings of the existing method and proposes a massager and a massage head stroke adjustment structure to solve the technical problem that the massager stroke cannot be adjusted in the related art and cannot meet the use needs of different users.

[0005] In a first aspect, an embodiment of the utility model provides a stroke adjustment structure of a massage head, which includes a control unit, a motor, an eccentric wheel, a transmission member and a piston rod, wherein the control unit is electrically connected to the motor, the motor output shaft is connected to the eccentric wheel to drive the eccentric wheel to swing, the transmission member is connected between the eccentric wheel and the piston rod, the two ends of the transmission member are rotatably connected to the piston rod relative to the eccentric wheel, and the axis of the connection between the transmission member and the eccentric wheel is not on the same axis as the axis of the output shaft of the motor;

[0006] The control unit is used to send a control instruction to the motor so that the motor drives the eccentric wheel to swing. The transmission member is used to convert the swing of the eccentric wheel into a linear reciprocating motion of the piston rod along its axial direction. The piston rod is used to connect with the massage head to drive the massage head to perform a linear reciprocating motion.

[0007] Further setting: The control unit includes a main control board, a magnet, and a Hall induction board. The main control board is electrically connected to the Hall induction board. The magnet is installed on the motor and rotates synchronously with the output rotating shaft of the motor. The Hall induction board is used to detect the rotation angle of the magnet with the output rotating shaft of the motor to generate a corresponding Hall voltage and convert it into an electrical signal and send it to the main control board.

[0008] Further setting: The magnet is arranged at the bottom of the motor, and the Hall induction board is arranged opposite to the magnet.

[0009] Further setting: The transmission member includes a transmission rod. One end of the transmission rod is rotatably connected to the eccentric wheel, and the other end is rotatably connected to the end of the piston rod.

[0010] Further setting: It further includes a limit seat, and the limit seat is provided with a limit hole for the piston rod to pass through to limit the movement path of the piston rod.

[0011] Further setting: The tolerance range between the aperture of the limit hole and the outer diameter of the piston rod is between 0.2 - 0.3 mm.

[0012] Further setting: The piston rod is provided with a connecting portion at the end far from the connection with the transmission rod for connecting with the massage head.

[0013] Further setting: The connecting portion includes a threaded hole.

[0014] In a second aspect, an embodiment of the present invention provides a massager, which includes a housing, a massage head, and a stroke adjustment structure of the massage head as described above. The stroke adjustment structure of the massage head is arranged inside the housing, a part of the massage head is located outside the housing, and the massage head is detachably connected to the stroke adjustment structure of the massage head.

[0015] Further setting: The housing is provided with a stroke adjustment knob connected to the stroke adjustment structure of the massage head for adjusting the stroke of the massage head.

[0016] The beneficial technical effects brought by the technical solution provided by the embodiment of the present invention include:

[0017] 1. The stroke adjustment structure of the massage head of the present utility model uses a control unit to adjust the stroke range of the piston rod. The structure is simple and does not require additional structural components. The stroke range of the piston rod can be adjusted arbitrarily within the designed range, and then the purpose of adjusting the stroke range of the massage head can be achieved. It can effectively reduce costs, reduce noise, and improve the reliability and stability of the mechanism.

[0018] 2. In the stroke adjustment structure of the massage head of the present utility model, the control unit mainly uses a Hall induction plate to cooperate with a magnet that rotates synchronously with the output rotating shaft of the motor to detect the rotation range of the output rotating shaft of the motor. The Hall induction plate detects the change of the magnetic field during the rotation of the magnet based on the Hall effect, and has the advantages of high precision, fast response, and low power consumption. It can accurately control the rotation range of the output rotating shaft of the motor and improve the accuracy of the stroke adjustment of the massage head.

[0019] 3. In the massager of the present utility model, the piston rod realizes detachable connection with the massage head through its connecting part, so that different massage heads can be replaced according to different usage requirements of users. Moreover, the hitting and massaging depth of the piston rod can be adjusted according to the instructions issued by the control unit, making the massager of the present utility model applicable to different users and meeting the usage requirements of different users.

[0020] Additional aspects and advantages of the present utility model will be given in part in the following description, and these will become obvious from the following description or be understood through the practice of the present utility model. Description of the Drawings

[0021] The above-mentioned and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0022] Figure 1 is a schematic structural diagram of the stroke adjustment structure of the massage head provided by the embodiment of the present utility model;

[0023] Figure 2 is a three-dimensional structural diagram of the stroke adjustment structure of the massage head provided by the embodiment of the present utility model;

[0024] Figure 3 is a schematic diagram of the principle that the eccentric wheel of the stroke adjustment structure of the massage head provided by the embodiment of the present utility model pushes the piston rod through a transmission member;

[0025] Figure 4 is a split diagram of the massager provided by the embodiment of the present utility model;

[0026] Figure 5 is a schematic internal structure diagram of the massager provided by the embodiment of the present utility model. Detailed Embodiments

[0027] The embodiments of the present utility model will be described below in conjunction with the accompanying drawings thereof. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present utility model, and do not constitute a limitation on the technical solutions of the embodiments of the present utility model.

[0028] Those skilled in the art of the present technology can understand that, unless specifically stated, the "the" and "this" used herein may also include plural forms. It should be further understood that the term "including" used in the description of the present utility model means the presence of the described features, integers, parts and / or components, but does not exclude the implementation of other features, parts, components and / or combinations thereof supported by the art of the present technology. The term "and / or" used herein means at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or implemented as "B", or implemented as "A and B".

[0029] In the description of the present utility model, the directions or positional relationships indicated by the words "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are the exemplary directions or positional relationships based on the accompanying drawings, which are for the convenience of describing or simplifying the description of the embodiments of the present utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.

[0030] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plural" is two or more.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] To make the purpose, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0033] Please refer to Figures 1 to 5, in view of the problems of complex structure, poor reliability and high cost of the stroke adjustment structure of the current massager, the present utility model provides a stroke adjustment structure of a massage head, which can change the stroke of the massage head within the designed range by means of electronic control, has a simple structure, does not require additional structural parts, can effectively reduce the cost, and improve the reliability and stability of the massage head operation.

[0034] Specifically, please refer to Figures 1 to 3 , the stroke adjustment structure of the massage head of the present utility model (hereinafter referred to as "stroke adjustment structure") includes a control unit 1, a motor 2, an eccentric wheel 3, a transmission member 4 and a piston rod 5. The control unit 1 is electrically connected to the motor 2. The control unit 1 sends a control instruction to the motor 2, so that the motor 2 can perform periodic reciprocating operations. The output end of the motor 2 is connected with an output rotating shaft, and the motor 2 is connected with the eccentric wheel 3 through its output rotating shaft, so that the motor 2 drives the eccentric wheel 3 to swing under the electronic control of the control unit 1. In a specific embodiment, the output rotating shaft and the motor 2 can be disassembled into two components or directly integrally designed.

[0035] The transmission member 4 is connected between the eccentric wheel 3 and the piston rod 5, and both ends of the transmission member 4 are respectively rotatably connected to the eccentric wheel 3 and the piston rod 5. While the eccentric wheel 3 swings along with the output rotating shaft of the motor 2, the connecting end of the transmission member 4 and the eccentric wheel 3 reciprocates along a certain curve track with the swing of the eccentric wheel 3, so as to drive the piston rod 5 connected to the other end of the transmission member 4 to perform a linear reciprocating motion along its axis. Thus, under the transmission action of the transmission member 4, the swing of the eccentric wheel 3 can be converted into the linear reciprocating motion of the piston rod 5. In addition, the end of the piston rod 5 far from its connection with the transmission member 4 is used to connect with the massage head. Then, while the piston rod 5 performs a linear reciprocating motion under the transmission action of the transmission member 4, it will drive the massage head to move synchronously, and then achieve the purpose of the massage head hitting externally repeatedly for massage.

[0036] That is, the present utility model constitutes a crank-slider mechanism through the eccentric wheel 3, the transmission member 4 and the piston rod 5. The displacement of the piston rod 5 in the crank-slider mechanism will change with the change of the rotation angle of the crank (i.e., the eccentric wheel 3 in this embodiment). Therefore, by adjusting the angle range of the swing of the eccentric wheel 3 driven by the motor 2, the displacement range of the linear reciprocating motion of the piston rod 5 can be adjusted, so as to achieve the effect of changing the movement depth of the massage head.

[0037] Particularly, the axis center of the connection point between the transmission member 4 and the eccentric wheel 3 of the present utility model is not on the same axis as the axis center of the output rotating shaft of the motor 2, then it can be combined with Figure 3As shown in the figure, the center of the connection between the output rotating shaft of the motor 2 and the eccentric wheel 3 is denoted as point O, and the center of the connection between the transmission member 4 and the eccentric wheel 3 is denoted as point O'. The output rotating shaft of the motor 2 is fixedly connected to the vertex of the eccentric wheel 3, that is, point O is located at the vertex of the eccentric wheel 3, and point O' is located on the center line of the eccentric wheel 3. The distance between point O and point O' is taken as the eccentricity of the eccentric wheel 3.

[0038] In addition, in this embodiment, the direction of the line connecting point O and point O' when the eccentric wheel 3 is in the initial position is taken as the Y-axis, and the direction perpendicular to the Y-axis and along the radial direction of the eccentric wheel 3 is taken as the X-axis. Then, when the output rotating shaft of the motor 2 drives the eccentric wheel 3 to swing, the eccentric wheel 3 swings left and right with the Y-axis as the center line. Correspondingly, the center O' of the connection between the transmission member 4 and the eccentric wheel 3 also swings left and right with the Y-axis as the center line, and the end points of its left and right swing displacements are respectively denoted as point L and point R. At the same time, when the eccentric wheel 3 is in the initial position, the distance from the position of the center O' of the connection between the transmission member 4 and the eccentric wheel 3 to the line connecting point L and point R is denoted as L1. In this embodiment, the center of the connection between the transmission member 4 and the piston rod 5 is also denoted as point A. Then, when the transmission member 4 swings with the swing of the eccentric wheel 3, the distance L3 from point A where the transmission member 4 is connected to the piston rod 5 to the M-axis parallel to the X-axis shown in the figure will change with the change of L1. The displacement range of point A is the range of the linear reciprocating motion of the piston rod 5. Obviously, the amplitude of the linear reciprocating motion of the piston rod 5 is related to L1, and the magnitude of L1 is related to the amplitude of the left and right swing of point O'. Therefore, by adjusting the swing angle of the motor 2 driving the eccentric wheel 3, the purpose of adjusting the amplitude of the left and right swing of point O' is achieved, and further the purpose of adjusting the displacement range of point A is achieved, that is, the function of adjusting the stroke of the massage head is realized.

[0039] The operation of the motor 2 in this embodiment is mainly controlled by the control unit 1. The control unit 1 issues an instruction to the motor 2 to make the motor 2 drive the eccentric wheel 3 to swing. Specifically, the control unit 1 in this embodiment includes a main control board 11, a magnet 12, and a Hall induction board 13. The magnet 12 is installed on the motor 2 and rotates synchronously with the output rotating shaft of the motor 2. The Hall induction board 13 is arranged opposite to the magnet 12. The Hall induction board 13 is electrically connected to the main control board 11. The Hall induction board 13 is used to detect the magnetic field change caused by the rotation of the magnet 12 with the output rotating shaft of the motor 2 and feedback the detection signal of the corresponding magnetic field change to the main control board 11. The main control board 11 controls the control instruction issued to the motor 2 according to the received detection electrical signal of the magnetic field change to realize the control of the forward and reverse rotation of the motor 2, and then realizes the control of the swing of the eccentric wheel 3 driven by the motor 2.

[0040] Specifically, the magnetic field generated by the magnet 12 acts on the Hall induction plate 13 and causes the Hall induction plate 13 to generate a Hall voltage. When the motor 2 starts, the magnet 12 rotates with the output rotating shaft of the motor 2. The magnetic fields at different angular positions of the magnet 12 on the output rotating shaft of the motor 2 are different. The change in the magnetic field will cause the Hall voltage generated by the Hall induction plate 13 to change. The Hall induction plate 13 converts the generated Hall voltage into an electrical signal and outputs it to the electronic control board. The main control board 11 issues control instructions such as stopping, starting, and reversing the motor 2 according to the electrical signal detected by the Hall induction plate 13. Therefore, by presetting the voltage threshold for the main control board 11, the voltage threshold is the Hall voltage generated by the magnet 12 acting on the Hall induction plate 13 when the magnet 12 rotates to the left and right end points of the swing along with the output rotating shaft of the motor 2. When the Hall voltage generated by the Hall induction plate 13 due to the detected magnetic field change reaches the preset voltage threshold in the main control board 11, the main control board 11 sends a reverse signal to the motor 2 to limit the rotation angle range of the output rotating shaft of the motor 2, so that the swing range of the transmission member 4 along with the eccentric wheel 3 is determined, and then the reciprocating motion range of the piston rod 5 is limited.

[0041] When the main control board 11 issues a control instruction to the motor 2, a relative zero position is first given to the output rotating shaft of the motor 2 in the radial plane. The relative zero position is the position where the eccentricity does not deflect relative to the Y-axis. The main control board 11 receives the electrical signal output by the conversion of the Hall voltage fed back by the Hall induction plate 13 while issuing a control instruction to the motor 2, so that the output rotating shaft of the motor 2 rotates reciprocally with the relative zero position as the center, driving the eccentric wheel 3 fixed on the output rotating shaft of the motor 2 to swing within the angular range corresponding to the preset voltage threshold. That is, the present invention adjusts the swing range of the eccentric wheel 3 by adjusting the preset voltage threshold of the main control board 11, and then achieves the purpose of adjusting the reciprocating motion range of the piston rod 5 to realize the adjustment of the movement stroke of the massage head.

[0042] In addition, in this embodiment, the stroke adjustment structure of the present utility model is installed on the mounting plate 6. The mounting plate 6 is provided with a motor bracket 61 for supporting the motor 2. The motor bracket 61 can horizontally support the motor 2 on the mounting plate 6, so that the output rotating shaft of the motor 2 is arranged parallel to the horizontal direction of the mounting plate 6. The motor bracket 61 can not only support the motor 2, but also adjust the installation angle of the motor 2 according to actual installation requirements. At the same time, the mounting plate 6 is also provided with a mounting bracket 62 for plugging and installing the Hall induction plate 13. Through the mounting bracket 62, the Hall induction plate 13 can be vertically arranged on the mounting bracket 62, and the Hall induction plate 13 can be made to face the magnet 12. The distance between the Hall induction plate 13 and the magnet 12 can also be adjusted through the mounting bracket 62 to ensure the detection sensitivity of the Hall element. The mounting bracket 12 is provided with a slot, and the width of the slot is adapted to the thickness of the Hall induction plate 13, so that the side of the Hall induction plate 13 can be directly inserted into the slot to complete the installation of the Hall induction plate 13. The piston rod 5 in this embodiment is also arranged parallel to the horizontal direction of the mounting plate. The transmission member 4 includes a transmission rod connected between the eccentric wheel 3 and the piston rod 5. One end of the transmission rod is installed on the eccentric wheel 3 through a bearing and a hexagonal screw, so that this end of the transmission rod is rotatably connected to the eccentric wheel 3. The end of the transmission rod far from the connection with the eccentric wheel 3 is also connected to the end of the piston rod 5 through a bearing and a hexagonal screw, so that the end of the transmission rod and the end of the piston rod 5 are also rotatably connected.

[0043] The stroke adjustment structure of the present utility model further includes a limit seat 7. The limit seat 7 in this embodiment can be fixed on the mounting plate 6 through bolts. The piston rod 5 is horizontally arranged parallel to the mounting plate 6 through the limit seat 7. The limit seat 7 is provided with a limit hole for the piston rod 5 to pass through to limit the movement path of the piston rod 5. The axis of the limit hole and the axis of the piston rod 5 are on the same axis, and the outer contour of the piston rod 5 is adapted to the hole shape of the limit hole. In addition, the tolerance range between the aperture of the limit hole and the outer diameter of the piston rod 5 is between 0.2 - 0.3 mm. While ensuring that the limit seat 7 supports and limits the piston rod 5, the piston rod 5 and the limit hole are in clearance fit to ensure the normal reciprocating movement of the piston rod 5. Therefore, when the motor 2 drives the eccentric wheel 3 to swing, it will pull the transmission rod, so that the transmission rod laterally pushes the piston rod 5 to reciprocate in the limit seat under the drive of the eccentric wheel 3.

[0044] In addition, the end of the piston rod 5 connected to the transmission rod is recessed inward towards the axis of the piston rod 5 to form a connecting step. The end of the transmission rod is rotatably mounted on the connecting step through a bearing and a hexagon screw, and the thickness of the transmission rod is less than the height of the connecting step, that is, the outer contour of the connecting structure of the end of the piston rod 5 and the transmission rod is smaller than the limit hole, so that the transmission rod can enter the limit hole along with the piston rod 5, thereby shortening the distance between the piston rod 5 and the eccentric wheel 3, reducing the size of the stroke adjustment structure, and facilitating the miniaturization of the massager.

[0045] At one end of the piston rod 5 away from the connection with the transmission rod, there is a connection part 51 for connecting with the massage head. In this embodiment, the connection part 51 is set as a threaded hole, and the massage head can be inserted into the threaded hole and fixed by screw connection. When the piston rod 5 makes a linear reciprocating motion, the massage head is driven to make a linear reciprocating motion together, which is convenient for installation. Since the massage head and the connection part are detachably connected, the massage head with different massage effects can be replaced according to the actual use needs of the user to meet different use requirements of the user. In other embodiments, the connection part 51 can also be set as a connection hole, the massage head can be directly inserted into the connection hole, and the massage head can be tightened and fixed by a bolt penetrating the side wall of the connection hole. Or, the connection between the connection head and the piston rod 5 can also be realized in the form of a buckle.

[0046] When using the stroke adjustment structure of the present utility model to adjust the stroke of the massage head, first set the voltage threshold of the control unit 1. The voltage threshold is related to the maximum rotation angle of the output shaft of the motor 2, thereby limiting the maximum amplitude of the swing of the eccentric wheel 3 driven by the output shaft of the motor 2. Since the eccentric wheel 3, the transmission member 4 and the piston rod 5 form a crank-slider mechanism, the eccentric wheel 3 swings under the drive of the motor 2, and the eccentric wheel 3 drives the piston rod 5 through the transmission member 4, so that the piston rod 5 makes a linear reciprocating motion along its axis under the action of the limit seat, thereby realizing the function of repeatedly hitting and massaging the massage head connected to the piston rod 5.

[0047] In summary, the stroke adjustment structure of the present utility model realizes the adjustment of the stroke range of the piston rod 5 through electronic control. The rotation range of the output rotating shaft of the motor 2 is detected by using the Hall induction plate 13 in cooperation with the magnet 12 that rotates synchronously with the output rotating shaft of the motor 2. The Hall induction plate 13 detects the change of the magnetic field during the rotation of the magnet 12 based on the Hall effect, and has the advantages of high precision, fast response, and low power consumption. The electronic control method can accurately control the rotation range of the output rotating shaft of the motor 2. At the same time, the linear reciprocating motion of the massage head connected to the piston rod 5 is realized through the crank-slider mechanism composed of the eccentric wheel 3, the transmission member 4, and the piston rod 5. The structure is simple and no additional structural parts are required. The stroke range of the piston rod 5 can be arbitrarily adjusted by electronic control within the design range, and then the purpose of adjusting the stroke range of the massage head can be achieved, which can effectively reduce costs, reduce noise, and improve the reliability and stability of the mechanism.

[0048] The present utility model also relates to a massager. Specifically, please refer to Figure 4 and Figure 5 which includes a housing 101, a massage head, and the stroke adjustment structure of the massage head as described above. The stroke adjustment structure is installed in the housing 101. A part of the massage head is located outside the housing 101, and the part located inside the housing 101 is connected to the stroke adjustment structure. A channel 102 is provided on the housing 101 for the massage head to extend from inside the housing 101 to outside the housing 101, and the massage head makes a linear reciprocating motion along the axis of the channel 102.

[0049] Specifically, the limit seat 7 in the stroke adjustment structure is fixed in the channel 102. A rubber pad 103 is provided between the limit seat 7 and the inner wall of the channel 102. A piston rod 5 connected to the massage head is inserted into the limit seat 7 to push the massage head to make a linear reciprocating motion through the piston rod 5. Moreover, the connection between the massage head and the piston rod 5 is detachable, so that the massage head with different massage functions can be replaced to meet the different massage needs of users. Specifically, in the stroke adjustment structure, the connection between the piston rod 5 and the massage head is realized. While the piston rod 5 makes a reciprocating motion, it drives the massage head to make a synchronous reciprocating motion. A connection part 51 for connecting with the massage head is provided on the piston rod 5, and the detachable connection between the massage head and the piston rod 5 is realized through the connection part 51 for convenient disassembly and assembly. In other embodiments, the piston rod 5 and the massage head can also be directly set as an integral structure to ensure the connection stability between the massage head and the stroke adjustment structure.

[0050] The massage head in this embodiment can be divided into a spherical head, a bullet head, a flat head, a U-shaped head, etc. according to its shape. Different massage heads can meet different massage needs during use to improve the applicability of the massager 100 of the present application.

[0051] In addition, the massage head can also adjust its movement displacement through the stroke adjustment structure. The stroke adjustment structure is arranged in the housing 101. A motor 2 bracket for fixing the position of the motor 2 is provided in the housing 101, such that the output rotating shaft 21 of the motor 2 is arranged towards the bottom of the housing 101. The magnet 12 is arranged at the end of the motor 2 far from the output rotating shaft 21, that is, the magnet 12 is close to the top of the housing 101. The Hall induction plate 13 is arranged directly above the magnet 12, and there is a spacing between the Hall induction plate 13 and the magnet 12. The main control board is connected to the Hall induction plate 13 to receive the electrical signal converted from the Hall voltage generated by the Hall induction plate 13 detecting the magnetic field change when the magnet 12 rotates, and controls the rotation angle of the motor 2 by the main control board sending a control instruction to the motor 2. Meanwhile, a stroke adjustment knob 104 connected to the main control board is arranged on the top of the housing 101, and the voltage threshold of the main control board is set through the stroke adjustment knob 104 to limit the rotation range of the output rotating shaft 21 of the motor 2.

[0052] An eccentric wheel 3 is fixed on the output rotating shaft 21 of the motor 2. The eccentric wheel 3 is connected to the piston rod 5 through a transmission rod, so that under the transmission action of the transmission rod, the swing of the eccentric wheel 3 is converted into a linear reciprocating motion of the piston rod 5 along its axis. Since the stroke adjustment knob 104 can adjust the rotation range of the output rotating shaft 21 of the motor 2, the swing angle range of the eccentric wheel 3 can be adjusted accordingly, so as to achieve the purpose of adjusting the stroke of the massage head.

[0053] A battery 105 for supplying power to the motor 2 is also arranged inside the housing 101, and the housing 101 of this embodiment adopts a split housing 101 to facilitate the assembly of various components of the massager 100.

[0054] In summary, the massager 100 of the present utility model operates the control unit 1 to adjust the stroke of the massage head through the stroke adjustment knob 104 of the stroke adjustment structure to adapt to different massage needs of users. Since the depths of the skin fascia layers in different parts are different, the required massage depths when acting on different regional parts are also different. Therefore, the present utility model adjusts the stroke of the massage head to change the maximum massage depth it can reach, meeting the requirements of different massage depth adjustments, and the electronic control is very flexible and convenient, with high adjustment accuracy.

[0055] The above are only some embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical concept of the present utility model's solution, other similar implementation means based on the technical idea of the present utility model also belong to the protection scope of the embodiments of the present utility model.

Claims

1. A massage head stroke adjustment structure, characterized in that: It includes a control unit, a motor, an eccentric wheel, a transmission member and a piston rod, wherein the control unit is electrically connected to the motor, the motor output shaft is connected to the eccentric wheel to drive the eccentric wheel to swing, the transmission member is connected between the eccentric wheel and the piston rod, the two ends of the transmission member are rotatably connected to the piston rod relative to the eccentric wheel, and the axis of the connection between the transmission member and the eccentric wheel is not on the same axis as the axis of the output shaft of the motor; The control unit is used to send control instructions to the motor so that the motor drives the eccentric wheel to swing, the transmission member is used to convert the swing of the eccentric wheel into a linear reciprocating motion of the piston rod along its axial direction, and the piston rod is used to connect with the massage head to drive the massage head to perform linear reciprocating motion.

2. The massage head stroke adjustment structure according to claim 1, characterized in that: The control unit includes a main control board, a magnet and a Hall sensor board. The main control board is electrically connected to the Hall sensor board. The magnet is installed on the motor and rotates synchronously with the motor output shaft. The Hall sensor board is used to detect the rotation angle of the magnet with the motor output shaft to generate a corresponding Hall voltage and convert it into an electrical signal and send it to the main control board.

3. The massage head stroke adjustment structure according to claim 2, characterized in that: The magnet is arranged at the bottom of the motor, and the Hall sensor plate is arranged opposite to the magnet.

4. The massage head stroke adjustment structure according to claim 1, characterized in that: The transmission member comprises a transmission rod, one end of which is rotatably connected to the eccentric wheel, and the other end of which is rotatably connected to the end of the piston rod.

5. The massage head stroke adjustment structure according to claim 4, characterized in that: It also includes a limiting seat, on which a limiting hole is provided for the piston rod to pass through so as to limit the moving path of the piston rod.

6. The massage head stroke adjustment structure according to claim 5, characterized in that: The tolerance range between the aperture of the limiting hole and the outer diameter of the piston rod is 0.2-0.3 mm.

7. The massage head stroke adjustment structure according to claim 4, characterized in that: The piston rod is provided with a connecting portion for detachably connecting with the massage head at its end away from the transmission rod.

8. The massage head stroke adjustment structure according to claim 7, characterized in that: The connecting portion includes a threaded hole.

9. A massager, characterized in that: It comprises a shell, a massage head and a stroke adjustment structure of the massage head as described in any one of claims 1 to 8, wherein the stroke adjustment structure of the massage head is arranged in the shell, the massage head part is located outside the shell, and the massage head is detachably connected to the stroke adjustment structure of the massage head.

10. The massager according to claim 9, characterized in that: The shell is provided with a stroke adjustment knob which is connected with the stroke adjustment structure of the massage head and is used for adjusting the stroke of the massage head.

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