Leg and foot anti-pinch mechanism of massage chair

Abstract

According to the technical scheme, the leg and foot anti-pinch mechanism is characterized in that the leg and foot anti-pinch mechanism comprises a main frame, a leg massage frame and a foot massage frame, the leg massage frame is located above the foot massage frame, and the main frame is provided with a first sliding rail allowing the leg massage frame to slide up and down; the main frame is provided with a second slide rail for the foot massage frame to slide up and down; the main frame is provided with an elastic piece for hanging the leg massage frame at a designed height; the main frame is provided with an electric push rod which pushes the foot massage frame to move back and forth towards the leg massage frame, and the effect of protecting clamped objects is achieved.

Description

Technical Field

[0001] The utility model relates to a massage chair, and more particularly to a leg and foot anti-clamping mechanism of the massage chair. Background Art

[0002] Existing massage chairs have a leg massage structure, and in order to adapt to people of different heights, their legs are of different lengths. If the foot massage structure of the massage chair is fixed, people with short legs will not be able to place their feet on the foot massager. In order to solve this problem, a lifting structure that can adjust the height of the foot massager has appeared in the prior art; for example, the Chinese patent document with the announcement number CN219847259U and the patent name is a leg structure of a massage chair, and its description states that "the foot massage device bracket and the center of the calf massage device bracket are connected by a lifting structure to drive the calf massage device to rise and fall on the foot massage device."

[0003] However, the lifting structure of the above technology has safety hazards. When there are pets such as cats or dogs, or other obstacles between the foot massage device bracket and the calf massage device, the clamping action between the foot massage device bracket and the calf massage device may cause clamping damage to the obstacles. Utility Model Content

[0004] The utility model aims to provide a leg and foot anti-clamping mechanism for a massage chair, so as to achieve the effect of protecting clamped objects.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A leg and foot anti-pinch mechanism for a massage chair includes a main frame, a leg massage frame, and a foot massage frame. The leg massage frame is located above the foot massage frame. The main frame is provided with a first slide rail for the leg massage frame to slide up and down; the main frame is provided with a second slide rail for the foot massage frame to slide up and down; the main frame is provided with an elastic member for suspending the leg massage frame at a designed height; and the main frame is provided with an electric push rod for pushing the foot massage frame to move back and forth toward the leg massage frame.

[0007] Preferably, the elastic member is a deformable spring, there are two springs, one end of the spring is fixed to the main frame, and the other end of the spring is fixed to the leg massage frame.

[0008] Preferably, both ends of the electric push rod are hinged to the main frame and the foot massage frame respectively.

[0009] Preferably, the first slide rail is a double-row rail, and the leg massage frame is provided with a first roller sliding on the double-row rail.

[0010] Preferably, the second slide rail is a double-row rail, and the foot massage frame is provided with a second roller sliding on the double-row rail.

[0011] Preferably, the foot massage frame is provided with a lower massage groove for placing the human foot, and a lower massage roller is provided in the lower massage groove.

[0012] Preferably, an upper massage groove for the human leg is placed on the side of the leg massage frame, and an upper massage roller is provided in the upper massage groove.

[0013] Preferably, a downward convex button for cutting off the power supply of the electric push rod is provided at the lower end of the upper massage groove, and the downward convex button faces the foot massage frame.

[0014] Preferably, an accommodating groove for accommodating the lower convex button is provided on the edge of the lower massage groove; when the lower convex button is located in the accommodating groove, the lower convex button keeps the electric push rod powered on.

[0015] In summary, the present invention has the following beneficial effects:

[0016] (1) In this design, the foot massage frame can move back and forth toward the leg massage frame, shortening the distance between the two to accommodate users with different leg lengths. In addition, the leg massage frame uses an elastic massage frame to achieve suspension positioning. When receiving external force, the leg massager can move up and down;

[0017] The foot massager uses an electric push rod, which is also called a linear drive. It is a new type of linear actuator mainly composed of a motor push rod and a control device. It is a relatively mature existing technology.

[0018] Advantage 1: The elastic member and the electric push rod are installed separately in the leg massage frame and the foot massage frame. This design can ensure the stability of the foot massage frame when it is raised and lowered. If the elastic member and the electric push rod are integrated in one frame, for example, the rod body of the electric push rod is connected to the elastic member, when the electric push rod is extended and retracted, the elastic member will deform, causing the end of the electric push rod to swing, resulting in a decrease in safety and reliability. This design can avoid this technical defect.

[0019] Advantage 2: Since the leg massage frame of this design is suspended by an elastic member, under normal working conditions and when the leg massage frame is not clamped and pushed, the elastic member has already deformed in order to overcome the gravity of the leg massage frame. When the foot massage frame rises and pushes the leg massage frame, it first needs to overcome the gravity of the leg massage frame. Therefore, in the initial clamping stage, the force applied to the object is less than the gravity of the leg massage frame, and the clamping force is small, thereby achieving the effect of protecting the clamped object.

[0020] (2) The double-track design is to make the leg massage frame and foot massage frame move more stably.

[0021] (3) The design of the downward convex button has an emergency stop effect. When an object is clamped, the downward convex button is pressed against the object and activated. The downward convex button turns off the power supply of the electric push rod, and the electric push rod stops, thus preventing further clamping of the object.

[0022] (4) The receiving groove is designed for normal use. When the foot massage frame moves to fit with the leg massage frame, there is no object clamped at this time, and the space between the two is short. At this time, the normal use of leg and foot massage should be maintained. In order to prevent the foot massage chair from accidentally triggering the lower convex button, a receiving groove is used to accommodate the lower convex button to prevent it from being accidentally triggered. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the leg massage frame and the foot massage frame in the collapsed state in Example 1;

[0024] Figure 2 This is a schematic diagram of the main frame, leg massage frame and foot massage frame in the first embodiment in the exploded state;

[0025] Figure 3 This is a schematic diagram of the connection relationship between the main frame, leg massage frame and foot massage frame in Example 1;

[0026] Figure 4 is a schematic diagram of the positional relationship between the first slide rail and the second slide rail in the main frame in Example 1;

[0027] Figure 5 is a schematic diagram of the leg massage frame and the foot massage frame in the separated state in Example 2;

[0028] Figure 6 This is a schematic diagram of the principle of the downward convex button in Example 2 keeping the electric push rod powered;

[0029] Figure 7 This is a schematic diagram of the principle of the downward convex button disconnecting the power supply of the electric push rod in Example 2.

[0030] In the picture:

[0031] 1. Main frame; 2. Leg massage frame; 3. Foot massage frame;

[0032] 4. Elastic parts; 5. Electric push rod;

[0033] 61. First slide rail; 62. Second slide rail;

[0034] 71. First roller; 72. Second roller;

[0035] 81. Lower massage groove; 82. Lower massage roller;

[0036] 91. Upper massage groove; 92. Upper massage roller;

[0037] 101, convex button;

[0038] 102. Receiving tank;

[0039] 103. Power cord; 104. Metal shrapnel; 105. Wedge plate; 106. Thrust spring. DETAILED DESCRIPTION

[0040] The present invention will be described in further detail below with reference to the accompanying drawings.

[0041] Example 1, a leg and foot anti-pinch mechanism for a massage chair, referring to Figure 1-Figure 4 , including a main frame 1, a leg massage frame 2 and a foot massage frame 3; the main frame 1 is a metal steel frame structure, and the overall shape is a rectangular frame, which is fixed by four rectangular steel pipes on all sides, and there is also a vertical rod in the middle connecting the upper and lower beams;

[0042] The main frame 1 is used to be installed on the massage chair. The main frame 1 can be fixed on the frame of the massage chair. In other embodiments, the main frame 1 can also be rotatably connected to the frame of the massage chair.

[0043] The first slide rail 61 and the second slide rail 62 are fixed to the two vertical rods of the main frame 1. The first slide rail 61 and the second slide rail 62 are both arranged vertically;

[0044] The first slide rail 61 is a double-row rail, and the second slide rail 62 is also a double-row rail. The first slide rail 61 is located outside the second slide rail 62. The double-row rail refers to two parallel rails. In this embodiment, the cross-section of the rail is a concave structure, and two blocks are provided at the opening of the cross-section.

[0045] The main bodies of the leg massage frame 2 and the foot massage frame 3 are also metal frame structures.

[0046] The leg massage frame 2 is provided with first rollers 71 that slide on the double-row rails in the first slide rail 61, so that the first rollers 71 on both sides of the leg massage frame 2 can slide smoothly on the first slide rail 61, and two first rollers 71 are installed on one side of the double-row rail, which can ensure that the leg massage frame 2 can move back and forth stably on the first slide rail 61.

[0047] The foot massage frame 3 is provided with a second roller 72 that slides on the double-row rail in the second slide rail 62, so the second rollers 72 on both sides of the leg massage frame 2 can slide smoothly on the second slide rail 62, and one side of the double-row rail is equipped with two second rollers 72, which can ensure that the leg massage frame 2 can move back and forth stably on the second slide rail 62.

[0048] It has been described above that the leg massage frame 2 has the ability to move on the first slide rail 61 , and the foot massage frame 3 has the ability to move on the second slide rail 62 .

[0049] The main frame 1 is provided with an elastic member 4 for suspending the leg massage frame 2 at a designed height. The elastic member 4 is used to position the height of the leg massage frame 2 on the main frame 1. The elastic member 4 is a deformable spring. There are two springs. One end of the spring is fixed to the main frame 1 by a hook, and the other end of the spring is fixed to the leg massage frame 2 by a hook.

[0050] Due to the factor of gravity, the leg massage frame 2 will exert a force on the elastic member 4. The elastic force generated by the deformation of the elastic member 4 keeps the leg massage frame 2 at a stable height, which is the design height. Therefore, the elastic member 4 is kept in a deformed state. In this embodiment, when the design height is reached, the spring is in a compressed state. When not subjected to other external forces, such as the pushing force of the foot massage frame 3, the design height remains constant. The actual value of the design height of the leg massage frame 2 on the main frame 1 can be achieved by replacing elastic members 4 with different elastic coefficients as needed.

[0051] When the leg massage frame 2 is at the designed height and the foot massage frame 3 is at the bottom of the main frame 1 , there is a sufficient height difference between the two. This height difference is the height adjustment amount of the foot massage frame 3 and the leg massage frame 2 .

[0052] The height adjustment of the foot massage frame 3 is achieved by the electric push rod 5 .

[0053] The main frame 1 is provided with an electric push rod 5 for pushing the foot massage frame 3 to move back and forth toward the leg massage frame 2 , and both ends of the electric push rod 5 are hinged to the main frame 1 and the foot massage frame 3 respectively.

[0054] therefore:

[0055] When the electric push rod 5 is extended, it will push the foot massage frame 3 to move upward, so that the distance between it and the leg massage frame 2 is shortened, which is used for massaging people with short legs.

[0056] When the electric push rod 5 retracts, it pushes the foot massage frame 3 to move downward, thereby increasing the distance from the leg massage frame 2, so as to be used for massaging people with long legs.

[0057] The foot massage frame 3 is provided with a lower massage groove 81 for placing the human foot. There are two lower massage grooves 81 for placing two soles of the foot. A lower massage roller 82 is rotatably connected in the lower massage groove 81. The lower massage roller 82 is driven by a motor. The rotating lower massage roller 82 knocks on the bottom of the massage sole to achieve massage.

[0058] An upper massage groove 91 for the human leg is placed on the side of the leg massage frame 2. The upper massage groove 91 is a U-shaped structure. Since the user's legs are placed therein, an upper massage roller 92 is provided in the upper massage groove 91. The upper massage roller 92 is driven by a motor and massage is achieved by the rotating upper massage roller 92 hitting the bottom of the massage leg.

[0059] Working principle: This design slides the upper leg massage frame 2 onto the main frame 1 and uses elastic members 4 for suspension connection, which allows the leg massage frame 2 to move up and down elastically;

[0060] When there is a cat or other object in the foot massage frame 3, if the foot massage frame 3 moves upward and clamps the leg massage frame 2, the leg massage frame 2 will move upward, so that the clamped object is clamped less, thereby achieving the design purpose of protecting the clamped object and achieving an anti-pinch effect.

[0061] Example 2, a leg and foot anti-pinch mechanism for a massage chair, which differs from Example 1 in that:

[0062] Reference Figure 5-Figure 7 The lower end of the upper massage groove 91 is provided with a downward convex button 101 for cutting off the power supply of the electric push rod 5, and the lower convex button 101 faces the lower massage groove 81; the lower convex button 101 protrudes downward from the lower end of the upper massage groove 91, and a slide groove is provided at the lower end of the upper massage groove 91, and a thrust spring 106 is provided in the slide groove to resist the lower convex button 101. Under the action of the thrust spring 106, the lower convex button 101 is protruded.

[0063] A power cord 103 for supplying power to the electric push rod 5 is provided in the upper massage groove 91, and the connection of the power cord 103 is elastically connected by two metal springs 104. The lower convex button 101 is provided with a wedge plate 105, which forms an interface between the two metal springs 104.

[0064] When the downward convex button 101 is pressed, the downward convex button 101 moves upward, causing the wedge plate 105 to be inserted between the two metal springs 104, thereby disconnecting the power line 103, stopping the electric push rod 5, and stopping the foot massager frame from moving upward.

[0065] When the lower convex button 101 is reset under the thrust spring 106, the two metal springs 104 will also elastically reset and remain in the connected state;

[0066] In this design, when there is an object on the foot massage frame 3, if the foot massage frame 3 moves upward, the object will hit the lower convex button 101, thereby triggering the electric push rod 5 to break the circuit and stop, which can further achieve an anti-pinch effect.

[0067] The further optimized design is to avoid the convex button 101 from being accidentally triggered when the foot massage frame 3 and the leg massage frame 2 are normally close to each other;

[0068] The edge of the lower massage groove 81 is provided with a receiving groove 102 for receiving the downward convex button 101; the receiving groove 102 is opposite to the downward convex button 101, and the receiving groove 102 is located below the downward convex button 101;

[0069] When the foot massage frame 3 rises and the leg massage frame 2 approaches, the downward convex button 101 is located in the receiving groove 102, and the downward convex button 101 keeps the electric push rod 5 in the energized state.

[0070] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A leg and foot anti-pinch mechanism for a massage chair, comprising a main frame (1), a leg massage frame (2) and a foot massage frame (3), wherein the leg massage frame (2) is located above the foot massage frame (3), and is characterized by: The main frame (1) is provided with a first slide rail (61) for the leg massage frame (2) to slide up and down; The main frame (1) is provided with a second slide rail (62) for the foot massage frame (3) to slide up and down; The main frame (1) is provided with an elastic member (4) for suspending the leg massage frame (2) at a designed height; The main frame (1) is provided with an electric push rod (5) for pushing the foot massage frame (3) to move back and forth toward the leg massage frame (2).

2. The leg and foot anti-pinch mechanism of the massage chair according to claim 1, characterized in that: The elastic member (4) is a deformable spring, and there are two springs. One end of the spring is fixed to the main frame (1), and the other end of the spring is fixed to the leg massage frame (2).

3. The leg and foot anti-pinch mechanism of the massage chair according to claim 1, characterized in that: The two ends of the electric push rod (5) are respectively hinged to the main frame (1) and the foot massage frame (3).

4. The leg and foot anti-pinch mechanism of the massage chair according to claim 1, characterized in that: The first slide rail (61) is a double-row rail, and the leg massage frame (2) is provided with a first roller (71) that slides on the double-row rail.

5. The leg and foot anti-pinch mechanism of the massage chair according to claim 1 or 4, characterized in that: The second slide rail (62) is a double-row rail, and the foot massage frame (3) is provided with a second roller (72) that slides on the double-row rail.

6. The leg and foot anti-pinch mechanism of the massage chair according to claim 1, characterized in that: The foot massage frame (3) is provided with a lower massage groove (81) for placing the human foot, and a lower massage roller (82) is provided in the lower massage groove (81).

7. The leg and foot anti-pinch mechanism of the massage chair according to claim 6, characterized in that: An upper massage groove (91) for a human leg is placed on the side of the leg massage frame (2), and an upper massage roller (92) is arranged in the upper massage groove (91).

8. The leg and foot anti-pinch mechanism of the massage chair according to claim 7, characterized in that: A lower convex button (101) for cutting off the power supply of the electric push rod (5) is provided at the lower end of the upper massage groove (91), and the lower convex button (101) faces the foot massage frame (3).

9. The leg and foot anti-pinch mechanism of the massage chair according to claim 8, characterized in that: An accommodating groove (102) for accommodating the lower convex button (101) is provided on the edge of the lower massage groove (81); When the lower convex button (101) is located in the receiving groove (102), the lower convex button (101) keeps the electric push rod (5) in an energized state.

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