Back massage machine core and back air pressure massager applying same

Abstract

The utility model discloses a back massage machine core and a back air pressure massager applying the same, the back massage machine core comprises two massage pieces, a shell, two jacking air bags, four pushing air bags and an inflation and deflation assembly, and each massage piece comprises a massage head and a sliding seat; the two massage pieces are arranged on the shell side by side in a left-right mode through a sliding base in a sliding mode, the massage heads are arranged on the sliding base in a sliding mode, the top sides of the massage heads are exposed out of the shell, and the bottom sides extend into the sliding base. A jacking air bag and two pushing air bags are respectively arranged corresponding to each massage piece; the jacking air bag is arranged in the sliding seat and located on the bottom side of the massage head, and drives the massage head to be ejected or retracted towards the vertical direction of the back of the human body during inflation and deflation; the pushing air bags are arranged in the shell and located on the two opposite sides of the corresponding sliding seats respectively, and the two pushing air bags are inflated and deflated in a crossed mode to drive the massage pieces to drive the massage heads to slide in the extending direction of the back of the human body in a reciprocating mode. The inflation and deflation assembly is connected with the jacking air bags and the pushing air bags and used for driving the jacking air bags and the pushing air bags to be independently inflated and deflated, and various massage manipulations can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of massager technology, and in particular to a back massage mechanism and its application in a back air pressure massager. Background Technology

[0002] The back massager is designed based on the principles of ergonomics and traditional Chinese medicine meridian theory. It effectively relieves fatigue and relaxes the body by kneading the sides of the back. Especially for the elderly and sedentary office workers, the back massager can relax muscle tension, improve limited back movement and muscle spasms, and promote local blood circulation to relieve back pain. However, existing back massagers use a single massage technique when massaging the sides of the back, failing to provide customized massage techniques to meet different needs, thus not achieving optimal massage results. This invention was developed to improve the user experience and meet users' needs for different massage effects. Utility Model Content

[0003] The purpose of this utility model is to provide a back massage mechanism and its application in a back air pressure massager, and to solve the technical problem of applying different massage techniques to the human back.

[0004] To achieve the above objectives, the solution of this utility model is: a back massage mechanism, comprising two massage components, a housing, two lifting air bags, four pushing air bags, and an inflation / deflation assembly;

[0005] Two massage pieces are slidably mounted side by side on the housing. Each massage piece includes a massage head and a slide base. The massage head is slidably mounted on the slide base. The massage pieces are slidably mounted on the housing via the slide base. The top sides of the massage heads of the two massage pieces are exposed outside the housing, for fitting against the left and right sides of the human back.

[0006] One of the top-mounted airbags is located inside the left slide, at the bottom of the left massage head, and the other top-mounted airbag is located inside the right slide, at the bottom of the right massage head.

[0007] Four propulsion air bags are installed inside the housing, with two propulsion air bags respectively located on opposite sides of the left slide and the other two propulsion air bags respectively located on opposite sides of the right slide;

[0008] The inflation / deflation assembly connects the lifting airbag and the pushing airbag. It independently inflates and deflates the two pushing airbags on the left, driving the left slide to move the left massage head back and forth along the direction of the human back. It also independently inflates and deflates the two pushing airbags on the right, driving the right slide to move the right massage head back and forth along the direction of the human back. It independently inflates and deflates the two lifting airbags, driving the left massage head to push out or retract towards the human back, or driving the right massage head to push out or retract towards the human back.

[0009] Furthermore, the inflation / deflation assembly independently inflates and deflates the two push air bags on the left side, causing the left massage head to slide along the direction of the human back, while simultaneously independently deflating and inflating the two push air bags on the right side, so that the sliding direction of the right massage head along the direction of the human back is opposite to that of the left massage head.

[0010] Furthermore, the inflation / deflation assembly independently inflates and deflates the two air bags on the left and the two air bags on the right simultaneously, ensuring that the left and right massage heads slide in the same direction along the back of the body.

[0011] Furthermore, the inflation / deflation assembly independently inflates and deflates only the two push air bags on the left side, causing the left massage head to slide back and forth along the direction of the human back; or the inflation / deflation assembly independently inflates and deflates only the two push air bags on the right side, causing the right massage head to slide back and forth along the direction of the human back.

[0012] Furthermore, the massage head includes a massage head body and a piston rod. The massage head body is pivotally positioned at the top of the piston rod so that when the massage head slides back and forth along the extension direction of the human back, the massage head body is used to conform to the human back and rotate according to the contour of the human back.

[0013] Furthermore, the massage head body is shaped like a palm with its outer contour closed, and the two massage head bodies are symmetrically arranged on the left and right sides of their outer contours. This is used to simulate the human body's palms pressing against the back of the body or sliding along the direction of the back of the body.

[0014] Furthermore, the top surface of the massage head has at least two protrusions, which are spaced apart along the direction of extension of the human back.

[0015] Furthermore, the inflation / deflation assembly includes an air pump, an air valve, and a circuit board. The air pump is connected to the air valve, and the air valve is connected to two jacking air bags and two pushing air bags respectively. The circuit board is electrically connected to the air pump and the air valve.

[0016] Furthermore, a sliding cavity is provided inside the shell, and a sliding rod is fixed on the sliding cavity. The sliding rod extends along the direction of the human back. The slide seat is slidably mounted on the sliding rod. Two push air bags are disposed in the sliding cavity and are respectively connected to the two opposite outer sides of the slide seat. The two push air bags are used to drive the slide seat to slide along the direction of the sliding rod by alternating inflation and deflation.

[0017] This utility model also provides a back air pressure massager, which uses the above-mentioned back massage mechanism and includes a soft bag covering the outer periphery of the back massage mechanism.

[0018] After adopting the above solution, the beneficial effects of this utility model are as follows:

[0019] (1) It can simulate the human body's palms pressing or sliding up and down on both sides of the back of the human body.

[0020] (2) Each air bag is controlled independently, which can control the left and right massage heads to achieve a variety of movement modes; the left and right massage heads alternately push against the back of the human body, which can simulate the hands pressing up and down alternately on the back of the human body; the left and right massage heads alternately slide along the extension direction of the back of the human body, which can simulate the hands sliding up and down alternately on the back of the human body; the left and right massage can also simulate the hands sliding up and down on the back at the same time. By combining the above massage techniques, other massage techniques can be achieved.

[0021] (3) The air bag achieves massage through inflation and deflation, resulting in a gentler and more comfortable effect. It can adapt to long-term massage and can be combined with various massage techniques to effectively improve the user experience. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the combined structure of this utility model.

[0023] Figure 2 This is an exploded structural diagram of the present invention. Figure 1 .

[0024] Figure 3 This is an exploded structural diagram of the present invention. Figure 2 .

[0025] Figure 4 This is an exploded structural diagram of the massage component of this utility model.

[0026] Figure 5 This is the front view of this utility model.

[0027] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure at point AA.

[0028] Figure 7 yes Figure 5Schematic diagram of the cross-sectional structure at point BB.

[0029] Figure 8 yes Figure 6 A magnified view of a portion of the image.

[0030] Figure 9a This is a schematic diagram of the first massage technique of this utility model. Figure 1 .

[0031] Figure 9b This is a schematic diagram of the first massage technique of this utility model. Figure 2 .

[0032] Figure 10a This is a schematic diagram of the second massage technique of this utility model. Figure 1 .

[0033] Figure 10b This is a schematic diagram of the second massage technique of this utility model. Figure 2 .

[0034] Figure 11a This is a schematic diagram of the third massage technique of this utility model. Figure 1 .

[0035] Figure 11b This is a schematic diagram of the third massage technique of this utility model. Figure 2 .

[0036] Label Explanation:

[0037] 1-Massage component, 2-Housing shell, 3-Elevating air bag, 4-Pushing air bag, 5-Inflation / depression assembly, 6-Massage head, 7-Air pump, 8-Air valve, 9-Circuit board, 10-Slide seat, 11-Slide rod, 21-Sliding cavity, 22-Housing cover, 23-Sliding groove, 61-Massage head body, 62-Piston rod, 63-Protrusion, 64-Connecting part, 65-Mounting groove, 66-Piston rod body, 67-Sliding part, 101-Top cover, 102-Base, 103-Guide port, 104-Sliding hole, 105-Guide part, 110-Left slide seat, 120-Right slide seat, 610-Left massage head, 620-Right massage head. Detailed Implementation

[0038] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Unless otherwise expressly defined, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" in the claims, description, and accompanying drawings of this utility model is merely for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the specific protection scope of this utility model.

[0040] like Figure 1-1 As shown in Figure 1, this utility model provides a back massage mechanism, which focuses on... Figure 1-2 The back massage mechanism includes two massage components 1, a housing 2, two lifting air bags 3, four pushing air bags 4, and an inflation / deflation assembly 5. Each massage component 1 is equipped with a massage head 6 and a slide 10. The massage head 6 is slidably mounted on the slide 10. When the massage head 6 slides, it can be pushed vertically towards the back of the human body or retracted away from the back of the human body. The two massage components 1 are arranged side by side and are slidably mounted on the housing 2 along the extension direction of the human back. Specifically, the slide 10 is slidably mounted on the housing 2, and the massage components 1 are slidably mounted on the housing 2 through the slide 10. The top sides of the massage heads 6 of the two massage components 1 are exposed outside the housing 2 and are used to fit against the left and right sides of the human back. The bottom sides of the two massage heads 6 extend into the slide 10.

[0041] One of the top-mounted air bags 3 is located inside the left slide 110, at the bottom of the left massage head 610, and the other top-mounted air bag 3 is located inside the right slide 120, at the bottom of the right massage head 620; four push air bags 4 are located inside the housing 2, with two push air bags 4 located on opposite sides of the left slide 110 and the other two push air bags 4 located on opposite sides of the right slide 120.

[0042] The inflation / deflation assembly 5 connects the lifting air bag 3 and the pushing air bag 4. It independently inflates and deflates the two pushing air bags 4 on the left side, driving the left slide 110 to move the left massage head 610 back and forth along the extension direction of the human back. It independently inflates and deflates the two pushing air bags 4 on the right side, driving the right slide 120 to move the right massage head 620 back and forth along the extension direction of the human back. It independently inflates and deflates the two lifting air bags 3, driving the left massage head 610 to push out or retract towards the human back, or driving the right massage head 620 to push out or retract towards the human back.

[0043] When the inflation and deflation assembly 5 independently inflates and deflates the two push air bags 4 on the left, the left massage head 610 slides along the extension direction of the human back, while simultaneously independently deflating and inflating the two push air bags 4 on the right. This causes the sliding direction of the right massage head 620 along the extension direction of the human back to be opposite to the sliding direction of the left massage head 610, enabling the left massage head 610 and the right massage head 620 to simulate the alternating sliding and pushing motion of the human back by both palms.

[0044] The inflation / deflation assembly 5 independently inflates and deflates the two push air bags 4 on the left and the two push air bags 4 on the right, so that the left massage head 610 and the right massage head 620 slide in the same direction along the extension of the human back. This enables the left massage head 610 and the right massage head 620 to simulate the simultaneous upward or downward sliding of the human back by both palms.

[0045] The inflation / deflation assembly 5 independently inflates and deflates only the two push air bags 4 on the left side, causing the left massage head 610 to slide back and forth along the extension direction of the human back. Alternatively, the inflation / deflation assembly 5 independently inflates and deflates only the two push air bags 4 on the right side, causing the right massage head 620 to slide back and forth along the extension direction of the human back. This allows the left massage head 610 to simulate the left palm and slide up and down on the human back, or the right massage head 620 to simulate the left palm and slide up and down on the human back.

[0046] Because the human back has a curved contour, and each person's back contour is not exactly the same, in order to accommodate different back contours and ensure that the massage head 6 can always slide in close contact with the human back to achieve a massage, this section focuses on... Figure 4 and Figure 6 The massage head 6 includes a massage head body 61 and a piston rod 62. The massage head body 61 is pivotally mounted on the top of the piston rod 62 so that when the massage head 6 slides back and forth along the extension direction of the human back, the massage head body 6 is used to conform to the human back and rotate according to the contour of the human back. Specifically, as shown in the figure... Figure 8 As shown, a mounting groove 65 is formed on the bottom side of the massage head body 61. A connecting part 64 is formed by the upward protrusion of the center of the top surface of the piston rod 62. The inner contour formed by the inward concavity of the mounting groove 65 is larger than the outer contour formed by the outward protrusion of the connecting part 63. The mounting groove 65 and the connecting part 64 are rotatably engaged, so that when the massage head 6 is in contact with the back of the human body and slides along the extension direction of the back, it can automatically rotate and fit along the contour curve of the back of the human body. With the inflation and deflation of the top air bag 3, the massage head can press and knead the back of the human body. Figure 8 The arrow in the diagram indicates one of the directions of rotation.

[0047] Key points combined Figure 5As shown, the massage head body 61 has an outer contour shape with the palms closed. The outer contours of the two massage head bodies 61 are symmetrically arranged to simulate the human body's palms pressing against the back of the body or sliding along the direction of the back of the body.

[0048] Key points combined Figure 4 As shown, the top surface of the massage head body 61 has at least two protrusions 63, which are spaced apart along the extension direction of the human back. Of course, in other embodiments, the number of protrusions 63 can be three, four, etc., without specific limitation. It can press multiple points on the human back. With the sliding of the massage head 6 along the extension direction of the human back, it can effectively improve the massage effect and promote blood circulation. It can be adapted to the size of the massage head 6 and different users.

[0049] In this specific embodiment, the outer contour of the protrusion 63 is spherical. The spherical protrusion 63 fits against the back of the human body for pressing, providing a better experience and greater comfort.

[0050] The massage head 6 is inserted downwards into the slide 10, and its top extends upwards out of the housing 2. A lifting air bag 3 is positioned between the bottom of the massage head 6 and the inner bottom wall of the slide 10. The lifting air bag 3 expands by inflating to drive the massage head 6 upwards, pushing it out perpendicular to the back of the body; or it deflates to pull the massage head 6 downwards, moving it away from the back of the body. Figure 3 As shown, a sliding cavity 21 is provided inside the housing 2, and a slide rod 11 is fixed on the sliding cavity 21. The slide rod 11 extends along the direction of the human back, and the slide seat 10 is slidably disposed on the slide rod 11 (e.g., Figure 6 As shown, two push air bags 4 are disposed in the sliding cavity 21 and are respectively connected to the opposite outer sides of the slide block 10. The two push air bags 4 are used to drive the slide block 10 to slide along the extension direction of the slide rod 11 by alternating inflation and deflation.

[0051] Further focus on Figure 1-2 and Figure 7 The sliding cavity 21 has an opening on its top side, allowing two massage elements 1 to be arranged side by side. For each massage element 1, there are two slide rods 11, located on the left and right sides of the slide base 10 of the massage element 1. Sliding holes 104 for the slide rods 11 to pass through are formed on the left and right sides of the slide base 10. The arrangement of two slide rods 11 makes the sliding of the slide base 10 more stable. In addition, the opening of the sliding cavity 21 is covered by a shell cover 22. There are two sliding grooves 23 running side by side on the shell cover 22. The extension direction of the sliding grooves 23 is parallel to the extension direction of the slide rods 11 and extends along the extension direction of the human back. One sliding groove 23 corresponds to one massage head 6. The massage head body 61 of the massage head 6 is exposed above the sliding groove 23, and the piston rod of the massage head 6 is located below the sliding groove 23, making the sliding of the massage head 6 more stable.

[0052] Further focus on Figure 4 The slide 10 includes a top cover 101 and a base 102. The base 102 has an opening on its top side, and the top cover 10 is detachably fitted onto the opening of the base 102. The piston rod 62 includes a piston rod body 66, a connecting portion 64 formed on the top side of the piston rod body 66, and a sliding portion 67 formed on the bottom side of the piston rod body 66. The outer contour of the sliding portion 67 is adapted to the inner contour of the base 102 and can slide up and down relative to the base 102 within the base 102. A guide portion 105 is formed by an upward protrusion in the middle of the top cover 101, and the left and right outer side walls of the guide portion 105 slide against the aforementioned slide. On the left and right inner walls of the sliding groove 23, when the two pushing air bags 4 are cross-inflated and deflated, the guide part 105 slides against the inner wall of the sliding groove 23, which can prevent the slide block 10 from swinging left and right when sliding and ensure stability during the sliding process. The guide part 105 has a guide opening 103, which cooperates with the outer contour of the piston rod body 66 so that when the piston rod 62 slides in the slide block 10, the sliding part 67 is restricted in the slide block 10 to prevent it from slipping out of the slide block 10. The piston rod body 66 is less likely to deflect when sliding up and down, ensuring the up and down sliding direction.

[0053] The inflation / deflation assembly 5 includes an air pump 7, an air valve 8, and a circuit board 9. The air pump 7 is connected to the air valve 8, which is connected to two jacking air bags 3 and four pushing air bags 4 respectively. The circuit board 9 is electrically connected to the air pump 7 and the air valve 8. Specifically, the air valve 8 is a conventional six-way air valve, with six inlet valves, six outlet valves, and six deflation valves arranged side by side. The air pump 7 is connected to the six inlet valves of the air valve 8. The six inlet and outlet valves are connected to the inlets of the two jacking air bags 3 and the four pushing air bags 4 respectively. The six deflation valves are connected to the outside atmosphere. An inlet switch and a deflation switch are also provided between the inlet valves and the deflation valves. The circuit board 9 is used to control the air pump 7 to independently inflate or stop inflating each of the above-mentioned air bags. The circuit board 9 is used to control the opening and closing of the inlet and deflation switches of the air valve 8, so that the air pump 7 pumps gas to each air bag or stops pumping gas, or controls each air bag to deflate independently through the deflation valve. With the inflation / deflation assembly 5, each air bag can be inflated and deflated independently, allowing the two massage pieces 1 to press against the back of the human body, slide back and forth along the extension direction of the back of the human body, or combine the movements of the two massage pieces 1 to achieve different massage techniques on the back of the human body.

[0054] This utility model also provides a back air pressure massager, which uses the above-mentioned back massage mechanism and includes a soft bag (not shown in the figure). The soft bag covers the outer periphery of the back massage mechanism so that when the human back is attached to the massager, the outer surface of the soft bag directly contacts the human back, making the body feel more comfortable. The soft bag is specifically made of flexible fabric.

[0055] The movement patterns of the left massage head 610 and the right massage head 620 can be combined to form various massage techniques to simulate double-palm massage techniques and meet various user needs. Referring specifically to Figures 9 to 11, the specific description of the massage technique simulated by the human palms massaging both sides of the back is as follows: For ease of description, when the massage head 6 rises, it pushes out towards the back of the body; when it descends, it moves away from the back of the body. The massage head slides along the extension of the back of the body; sliding along the direction of the head is called an upward slide; sliding away from the head is called a downward slide.

[0056] This section focuses on combining Figure 9a and Figure 9b The first massage technique involves the left massage head 610 and the right massage head 620 moving up and down in opposite directions, mimicking the alternating pressing motion of the palms on both sides of the back. Simultaneously, the left and right massage heads 610 and 620 slide back and forth along the back, as indicated by the arrows in the diagram. When in use, with the back against the massager, the two massage heads 6 alternately move up and down to press the left and right sides of the back. At the same time, the left and right massage heads 610 and 620 slide up or down simultaneously along the back to press other areas. In this mode, at least several presses are completed in one stroke. Alternatively, the two massage heads 6 can also slide up and down alternately, i.e., when the left massage head 610 slides up, the right massage head 620 slides down, or vice versa, achieving another massage technique.

[0057] This section focuses on combining Figure 10a and Figure 10b The second massage technique involves two massage heads 6 moving up and down simultaneously to simulate the upward or downward sliding motion of two palms on the back. When in use, with the back against the massager, the left massage head 610 and right massage head 620 simultaneously and slowly push against the back. At the same time, they slide upwards in sync. When fully extended, both massage heads 6 slide upwards to their end point, gradually increasing the pushing force during this stroke. They then simultaneously descend and return to their original positions, slowly pushing against the back again before sliding downwards in the opposite direction. This process repeats, allowing the two massage heads 6 to simulate the upward and downward pushing motion of two palms on the back.

[0058] This section focuses on combining Figure 11a and Figure 11bThe third massage technique is described as follows: the left massage head 610 and the right massage head 620 simulate the alternating up-and-down sliding motion of the palms on the back. When in use, when the back of the body is against the massager, the two massage heads 6 rise up at the same time and push against the left and right sides of the back respectively. The left massage head 610 and the right massage head 620 then slide up and down alternately to simulate the alternating up-and-down sliding motion of the palms on the back.

[0059] In addition, the left massage head 610 and the right massage head 620 can slide up or down simultaneously. When in use, when the back of the body is against the massager, the two massage heads 6 rise up at the same time and push against the left and right sides of the back respectively. Then, the left massage head 610 and the right massage head 620 slide up or down simultaneously, simulating the palms of a person pushing up or down the back at the same time.

[0060] Of course, in other embodiments, the above-mentioned pressing modes can be combined. In addition, only one of the massage heads 6 can be controlled to press, which can meet the user's various massage needs. At the same time, combined with the control of inflating and deflating the air bag, the massage intensity can be made gentler and more comfortable, making the massager more similar to the massage effect of the human back to the human palms.

[0061] The above description is only a preferred embodiment of this utility model and is not intended to limit the design of this case. All equivalent changes made based on the key design of this case shall fall within the protection scope of this case.

Claims

1. A back massage mechanism, characterized in that: It includes two massage components (1), a housing (2), two lifting air bags (3), four pushing air bags (4), and an inflation / deflation assembly (5); Two massage pieces (1) are slidably arranged side by side on the housing (2). Each massage piece (1) includes a massage head (6) and a slide (10). The massage head (6) is slidably arranged on the slide (10). The massage piece (1) is slidably arranged on the housing (2) through the slide (10). The top side of the massage head (6) of the two massage pieces (1) is exposed outside the housing (2) for fitting to the left and right sides of the human back. One of the top air bags (3) is located in the left slide (110) and at the bottom of the left massage head (610), and the other top air bag (3) is located in the right slide (120) and at the bottom of the right massage head (620). Four propulsion air bags (4) are arranged inside the housing (2), two of which are arranged on opposite sides of the left slide (110) and the other two are arranged on opposite sides of the right slide (120). The inflation / deflation assembly (5) connects the lifting air bag (3) and the pushing air bag (4), independently inflating and deflating the two pushing air bags (4) on the left side, driving the left slide (110) to drive the left massage head (610) to slide back and forth along the extension direction of the human back, independently inflating and deflating the two pushing air bags (4) on the right side, driving the right slide (120) to drive the right massage head (620) to slide back and forth along the extension direction of the human back, independently inflating and deflating the two lifting air bags (3), driving the left massage head (610) to push out or retract towards the human back, or driving the right massage head (620) to push out or retract towards the human back.

2. The back massage mechanism according to claim 1, characterized in that: The inflation / deflation assembly (5) independently inflates and deflates the two push air bags (4) on the left side, causing the left massage head (610) to slide along the extension direction of the human back. At the same time, it independently deflates and inflates the two push air bags (4) on the right side, causing the sliding direction of the right massage head (620) along the extension direction of the human back to be opposite to the sliding direction of the left massage head (610).

3. The back massage mechanism according to claim 1, characterized in that: The inflation / deflation assembly (5) simultaneously and independently inflates and deflates the two push air bags (4) on the left and the two push air bags (4) on the right, so that the left massage head (610) and the right massage head (620) slide in the same direction along the extension direction of the human back.

4. The back massage mechanism according to claim 1, characterized in that: The inflation / deflation assembly (5) independently inflates and deflates only the two push air bags (4) on the left side, causing the left massage head (610) to slide back and forth along the extension direction of the human back; or the inflation / deflation assembly (5) independently inflates and deflates only the two push air bags (4) on the right side, causing the right massage head (620) to slide back and forth along the extension direction of the human back.

5. The back massage mechanism according to claim 1, characterized in that: The massage head (6) includes a massage head body (61) and a piston rod (62). The massage head body (61) is oscillatingly disposed at the top of the piston rod (62) so that when the massage head (6) slides back and forth along the extension direction of the human back, the massage head body (61) is used to conform to the human back and rotate according to the contour of the human back.

6. The back massage mechanism according to claim 5, characterized in that: The massage head body (61) has an outer contour shape in the form of a palm closed. The outer contours of the two massage head bodies (61) are symmetrically arranged to simulate the human body's palms pressing against the back of the body or sliding along the direction of the back of the body.

7. The back massage mechanism according to claim 5, characterized in that: The top surface of the massage head body (61) has at least two protrusions (63), which are spaced apart along the direction of extension of the human back.

8. The back massage mechanism according to claim 1, characterized in that: The inflation / deflation assembly (5) includes an air pump (7), an air valve (8), and a circuit board (9). The air pump (7) is connected to the air valve (8), and the air valve (8) is connected to two jacking air bags (3) and two pushing air bags (4) respectively. The circuit board (9) is electrically connected to the air pump (7) and the air valve (8).

9. The back massage mechanism according to claim 1, characterized in that: The housing (2) is provided with a sliding cavity (21), and a slide rod (11) is fixed on the sliding cavity (21). The slide rod (11) extends along the back of the human body. The slide seat (10) is slidably disposed on the slide rod (11). Two push air bags (4) are disposed in the sliding cavity (21) and are respectively connected to the two opposite outer sides of the slide seat (10). The two push air bags (4) are used to drive the slide seat (10) to slide along the extension direction of the slide rod (11) by alternating inflation and deflation.

10. A back air pressure massager, employing the back massage mechanism of any one of claims 1-9, characterized in that, It also includes a soft pad that covers the outer periphery of the back massage mechanism.

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